Search Results — 2000 specimen records retrieved (1978 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC257957  Acmispon americanus var. americanus George K. Helmkamp; E. A. Helmkamp 2011-8-19 18157 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 2.6 miles north of its junction with Tamarack Road 2436 Comment
  CLARK-A1045-1120  Gentiana simplex George K. Helmkamp 1977-9-1 V Alpine Sierra Nevada sphagnum bog; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1123  Kelloggia galioides George K. Helmkamp 1977-9-3 X Alpine Sierra Nevada Deep Creek [Sweetwater Mountains], edge of meadow; ; Chris Flat 7.5'Q 2438 Comment
  CLARK-A1045-1157  Geranium richardsonii George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1175  Gnaphalium microcephalum subsp. thermale George K. Helmkamp 1977-9-3 XI Alpine Sierra Nevada sphagnum bog; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1191  Potentilla gracilis subsp. nuttallii George K. Helmkamp 1977-9-1 VB Alpine Sierra Nevada dry slope under pines; ; Freel Peak 7.5'Q 2346 Comment
  HSC104227  Hieracium albiflorum G. K. Helmkamp, Amy Barnes 2012-8-12 19609 Alpine Northern Sierra Nevada Mountains: Woods Lake Rd., 0.8 mi. SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  RSA0037296  Arabis platysperma var. platysperma George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-2 22094 Alpine along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 Comment
  RSA0126305  Arabis hirsuta var. glabrata George K. Helmkamp, E. A. Helmkamp 2010-7-13 16545 Alpine Woods Lake Road, 0.1 mile south of its junction with CA-88 2492 Comment
  RSA614226  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 1997-9-9 2290 Alpine Junction of California Hwy 89 and California Hwy 4, south of Makleeville 1799 Comment
  SBBG129026  Lupinus lepidus var. sellulus G. K. Helmkamp, E. A. Helmkamp 2013-8-14 22248 Alpine CA-4, 12.4 mi SW of the CA-89 jct and just N of Kinney Reservoir 2540 Comment
  SD197885  Eriogonum wrightii var. subscaposum George Helmkamp, E. A. Helmkamp 1997-9-9 2304 Alpine Leviathan Lookout Road at the south and west sides of Leviathan Peak, northwest of Monitor Pass. 818 Comment
  SD239860  Eriogonum wrightii var. subscaposum George K. Helmkamp, William Barnes 2010-9-4 16940 Alpine Northern Sierra Nevada Mountains: Red Vista Road, 0.6 mile southeast of its junction with CA-88 just east of Carson Pass (Carson Pass 7.5'Q) 2553 Comment
  SD240859  Erigeron glacialis var. glacialis George K. Helmkamp, E. A. Helmkamp 2011-8-13 18070 Alpine Northern Sierra Nevada Mountains: south side of Bear Valley Village, along CA Hwy 4. 2469 Comment
  SD241145  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2011-8-19 18108 Alpine Northern Sierra Nevada Mountains: Tamarack Road, 1.2 miles east of its junction with Blue Lakes Road (Pacific Valley 7.5'Q) 2451 Comment
  SD241193  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2011-8-13 18065 Alpine Northern Sierra Nevada Mountains: south side of Bear Valley Village, along CA Hwy 4 (Tamarack 7.5'Q) 2168 Comment
  SD243135  Lupinus argenteus George K. Helmkamp, E. A. Helmkamp 2011-8-19 18136 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 1.4 miles north of its junction with Tamarack Road (Carson Pass 7.5Q) 2506 Comment
  SD243213  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2011-8-19 18099 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 6.6 miles south of its junction with CA-88. Large meadow. 2296 Comment
  SD247309  Eurybia integrifolia George K. Helmkamp, E. A. Helmkamp 2013-8-2 22099 Alpine Northern Sierra Nevada Mountains: along CA-88, Carson Pass Highway, 1.6 miles east of Caples Lake dam. 2486 Comment
  SD247436  Vicia villosa subsp. villosa George Helmkamp, Elizabeth Helmkamp 2013-8-4 22178 Alpine Northern Sierra Nevada Mountains: along CA-89, 0.6 mile south of Markleeville (Markleeville 7.5'Q) 1691 Comment
  SD254617  Lupinus lepidus var. confertus George K. Helmkamp, Amy Barnes 2014-8-27 23030 Alpine Northern Sierra Nevada Mountains; West Fork Carson River canyon along CA 88/Carson Pass Hwy, 2.6 miles east of the junction with Hwy 89/Luther Pass Rd. 1994 Comment
  SEINET1908500  Ambrosia acanthicarpa G. K. Helmkamp, E. A. Helmkamp 2008-1 13888 Alpine Eastern Sierra Nevada Mountains: Carson River road, 0.4 mile east of its west junction with CA-88. 1713 Comment
  SEINET1908691  Muhlenbergia richardsonis G. K. Helmkamp, E. A. Helmkamp 2008-1 13853 Alpine Eastern Sierra Nevada Mountains: Blue Lake Road just southeast of its junction with CA-88 2180 Comment
  SEINET3246037  Epilobium brachycarpum G. K. Helmkamp, E. A Helmkamp 2008-1 13989 Alpine Northern Sierra Nevada Mountains: along CA-89, 1.4 miles east of Luther Pass (Freel Peak 7.5') 2262 Comment
  SEINET3860292  Monardella odoratissima subsp. pallida George K. Helmkamp 2007-7-7 12504 Alpine Northern Sierra Nevada Mountains: Blue Lake Road, 12.0 miles south of its junction with CA-88.; 0 2549 Comment
  SEINET4560539  Eriogonum nudum var. deductum George K. Helmkamp, Elizabeth Helmkamp 2013-1 22245 Alpine Northern Sierra Nevada Mountains: along CA-4, 12.4 miles southwest of the CA-89 junction and just north of Kinney Reservoir. 2540 Comment
  SEINET4560551  Melilotus albus George K. Helmkamp, Elizabeth Helmkamp 2013-1 22179 Alpine Northern Sierra Nevada Mountains: along CA-89, 0.6 mile south of Markleeville. 1691 Comment
  SEINET4691392  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2011-1 18137 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 1.4 miles north of its junction with Tamarack Road. 2506 Comment
  SEINET4691394  Acmispon americanus var. americanus G. K. Helmkamp, E. A. Helmkamp 2011-1 18157 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 2.6 miles north of its junction with Tamarack Road. 2436 Comment
  SEINET5586214  Ambrosia acanthicarpa George K. Helmkamp, Elizabeth Helmkamp 2013-1 22169 Alpine Northern Sierra Nevada Mountains: along CA-89, 0.6 mile south of Markleeville. 1691 Comment
  SEINET7248285  Convolvulus arvensis George K. Helmkamp, Elizabeth Helmkamp 2013-1 22250 Alpine Northern Sierra Nevada Mountains: along CA-89, 0.6 mile south of Markleeville. 1691 Comment
  UC2015611  Deschampsia elongata G. Helmkamp 1995-9-23 3 -37 Alpine West side of Sonora Pass just beyond the Mono County line. Comment
  UC2015620  Lupinus lepidus var. sellulus G. Helmkamp 1995-9-23 3 -22 Alpine West side of Sonora Pass just beyond the Mono County line. Comment
  UCD116660  Sidalcea glaucescens G. K. Helmkamp; E. A. Helmkamp 2007-7-17 12536 Alpine Northern Sierra Nevada Mountains, Blue Lake Road, about 9 miles south of its junction with CA-88. 2498 Comment
  UCD121246  Apocynum androsaemifolium G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12698 Alpine Northern Sierra Nevada Mtns: Red Lake; east facing slope along CA-88 just east of Carson Pass (Carson Pass 7.5'Q). 2378 Comment
  UCD127525  Heracleum maximum G. K. Helmkamp 2007-7-7 12479 Alpine Northern Sierra Nevada Mountains: along CA-89, 1.3 miles north of its junction with CA-88. 2262 Comment
  UCD128629  Agoseris monticola G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12673 Alpine Northern Sierra Nevada Mountains. Woods Lake Road 0.8 mile south of its junction with CA-88; beside the Woods Creek crossing. 2494 Comment
  UCD129142  Arnica parryi G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12693 Alpine Northern Sierra Nevada Mountains. Woods Lake Road south of CA-88 at the picnic area just north of the lake. 2470 Comment
  UCD134505  Pinus contorta subsp. murrayana G. K. Helmkamp; E. A. Helmkamp 2007-7-17 12529 Alpine Northern Sierra Nevada Mountains: Blue Lake Road, about 2.7 miles south of its junction with CA-88. 2238 Comment
  UCD138507  Allium campanulatum G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11132 Alpine Northern Sierra Nevada Mountains. Wood's Lake Road, 0.3 mile N of the parking area for Wood's Lake. Wood's Creek. 2509 Comment
  UCD140454  Carex illota G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11113 Alpine Northern Sierra Nevada Mountains: Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake. 2509 Comment
  UCD98578  Aconogonon davisiae G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11141 Alpine Northern Sierra Nevada Mountains. Wood's Lake Road, 0.3 mile N of the parking area for Wood's Lake. Wood's Creek. 2509 Comment
  UCR102587  Phleum alpinum George K. Helmkamp, E. A. Helmkamp 1997-9-11 2394 Alpine Sierra Nevada Mountains, 0.2 mi northwest of Sonora Pass along CA Hwy 108 2912 Comment
  UCR102588  Aster occidentalis George K. Helmkamp, E. A. Helmkamp 1997-9-11 2395 Alpine Sierra Nevada Mountains, 0.2 mi northwest of Sonora Pass along CA Hwy 108 2912 Comment
  UCR103537  Sisymbrium altissimum George K. Helmkamp, E. A. Helmkamp 1997-9-9 2301 Alpine Sierra Nevada Mtns., junction of Calif. Hwy 89 and Calif. Hwy 4, south of Markleeville 1799 Comment
  UCR103538  Lactuca serriola George K. Helmkamp, E. A. Helmkamp 1997-9-9 2300 Alpine Sierra Nevada Mtns., junction of Calif. Hwy 89 and Calif. Hwy 4, south of Markleeville 1799 Comment
  UCR122315  Eriophyllum lanatum var. integrifolium George K. Helmkamp, E. A. Helmkamp 1997-9-9 2312 Alpine Sierra Nevada Mountains, Leviathan Lookout Road at the S and W sides of Leviathan Peak, NW of Monitor Pass 2683 Comment
  UCR176216  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2006-8-3 11114 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR178763  Ericameria parryi George K. Helmkamp, E. A. Helmkamp 2006-9-12 11399 Alpine Northern Sierra Nevada Mountains, west end of Caples Lake at a dam; alongside CA Hwy 88 2335 Comment
  UCR178973  Lupinus lepidus var. sellulus George K. Helmkamp, E. A. Helmkamp 2006-9-12 11385 Alpine Northern Sierra Nevada Mountains, along Calif. Hwy 89, 1.5 miles east of the El Dorado County line, general vicinity of Luther Pass 2186 Comment
  UCR189442  Eriogonum spergulinum var. reddingianum George K. Helmkamp, E. A. Helmkamp 2007-8-4 12703 Alpine Northern Sierra Nevada Mountains, Woods Lake Road 0.1 mile south of its junction with CA-88 2500 Comment
  UCR196793  Tetradymia canescens George K. Helmkamp, E. A. Helmkamp 2008-7-22 13889 Alpine Eastern Sierra Nevada Mountains, Carson River road, 0.4 mile east of its west junction with CA-88 1713 Comment
  UCR196816  Castilleja miniata subsp. miniata George K. Helmkamp, E. A. Helmkamp 2008-7-16 13813 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR196874  Mimulus cardinalis George K. Helmkamp, E. A. Helmkamp 2008-7-22 13896 Alpine Eastern Sierra Nevada Mountains, Carson River road, 0.4 mile east of its west junction with CA-88 1713 Comment
  UCR196961  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2008-7-16 13837 Alpine Northern Sierra Nevada Mountains, 0.1 mile south of CA-88 on a dead-end spur south of Carson Pass 2595 Comment
  UCR202560  Centaurea cyanus George K. Helmkamp, E. A. Helmkamp 2008-9-22 14155 Alpine Northern Sierra Nevada Mountains, along CA-89. 0.1 mile north of Markleeville 1686 Comment
  UCR202660  Helianthus annuus George K. Helmkamp, E. A. Helmkamp 2008-8-8 13988 Alpine Northern Sierra Nevada Mountains, along CA-89, 1.4 miles east of Luther Pass 2262 Comment
  UCR209694  Urtica dioica subsp. holosericea George K. Helmkamp, E. A. Helmkamp 2009-8-4 15366 Alpine Sierra Nevada Mountains, along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River 1787 Comment
  UCR209699  Sambucus mexicana George K. Helmkamp, E. A. Helmkamp 2009-8-4 15364 Alpine Sierra Nevada Mountains, along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River 1787 Comment
  UCR209705  Artemisia tridentata subsp. vaseyana George K. Helmkamp, E. A. Helmkamp 2009-8-4 15372 Alpine Sierra Nevada Mountains, along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River 1787 Comment
  UCR219131  Polemonium californicum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16557 Alpine Northern Sierra Nevada Mountains, north side of Kirkwood, just north of CA-88 near the El Dorado and Amador Co. lines, west end of Caples Lake 2332 Comment
  UCR219174  Penstemon newberryi var. newberryi George K. Helmkamp, E. A. Helmkamp 2010-7-13 16553 Alpine Northern Sierra Nevada Mountains, Sno-Park area at Carson Pass; northeast side of CA-88 across from the trailside parking area 2613 Comment
  UCR219270  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2010-7-13 16544 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2492 Comment
  UCR229460  Lonicera conjugialis George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18075 Alpine Northern Sierra Nevada Mountains, south side of Bear Valley Village, along CA Hwy 4 2169 Comment
  UCR234563  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2011-8-19 18137 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 1.4 miles north of its junction with Tamarack Road 2506 Comment
  UCR234595  Carex preslii George K. Helmkamp, E. A. Helmkamp 2011-8-19 18123 Alpine Northern Sierra Nevada Mountains, Tamarack Road, 0.1 mile east of its junction with Blue Lakes Road 2485 Comment
  UCR235313  Sambucus racemosa var. microbotrys George K. Helmkamp, William Barnes 2010-9-4 16944 Alpine Northern Sierra Nevada Mountains, Red Vista Road, 0.6 mile southeast of its junction with CA-88 just east of Carson Pass 2553 Comment
  UCR245721  Hackelia micrantha George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22209 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR247255  Ericameria nauseosa George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22190 B Alpine Northern Sierra Nevada Mountains, along CA-89, 1.3 miles southwest of Monitor Pass 2503 Comment
  UCR247262  Sidalcea malviflora subsp. asprella George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22188 Alpine Northern Sierra Nevada Mountains, along CA-89, 1.3 miles southwest of Monitor Pass 2503 Comment
  UCR248706  Bromus inermis subsp. inermis George K. Helmkamp, Belinda Pesheck 2013-7-14 21050 Alpine Northern Sierra Nevada Mountains, off Blue Lakes Road, 9.4 miles south of CA-88, between a private dirt road and Charity Valley Creek 2409 Comment
  UCR252977  Calyptridium monospermum George K. Helmkamp, Belinda Pesheck 2013-7-14 21091 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR252978  Spiraea densiflora George K. Helmkamp, Belinda Pesheck 2013-7-14 21090 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR253076  Polygonum davisiae George K. Helmkamp, Belinda Pesheck 2013-7-14 21082 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR253092  Solidago canadensis subsp. elongata George K. Helmkamp, Belinda Pesheck 2013-7-14 21069 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR257799  Epilobium brachycarpum George K. Helmkamp, Amy Barnes 2012-8-12 19621 Alpine Northern Sierra Nevada Mountains, along CA-89/Carson Pass Hwy in West Carson Canyon, 1.4 miles east of the junction with CA-88 2034 Comment
  UCR257801  Eriogonum wrightii var. subscaposum George K. Helmkamp, Amy Barnes 2012-8-12 19627 Alpine Northern Sierra Nevada Mountains, along CA-89/Carson Pass Hwy in West Carson Canyon, 1.4 miles east of the junction with CA-88 2034 Comment
  UCR257808  Carex nebrascensis George K. Helmkamp, Amy Barnes 2012-8-12 19633 Alpine Northern Sierra Nevada Mountains, north side of CA-88/Carson Pass Hwy, 0.4 mile east of its junction with Kirkwood Meadows Drive 2357 Comment
  UCR257840  Elymus hispidus George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19715 Alpine Northern Sierra Nevada Mountains, along CA-88 at the Red Vista Rd. junction, east end of Carson Pass near Red Lake 2619 Comment
  UCR257856  Thalictrum fendleri var. fendleri George K. Helmkamp, Amy Barnes 2012-8-12 19610 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257873  Madia glomerata George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19699 A Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, at the west side of Carson Spur, 1.7 air mi west (278 deg. ) of Kirkwood 2436 Comment
  UCR258411  Centaurea cyanus George K. Helmkamp, Amy Barnes 2014-8-27 23038 Alpine Northern Sierra Nevada Mountains, Woodfords, at the junction of CA-88 and CA-89 1723 Comment
  UCR258991  Urtica dioica George K. Helmkamp, Amy Barnes 2014-9-16 23071 Alpine Eastern Sierra Nevada Mountains, Paynesville, junction of Chambers Lane and Diamond Valley Road along West Fork Carson River 1593 Comment
  UCR258997  Epilobium hallianum George K. Helmkamp, Amy Barnes 2014-9-16 23083 A Alpine Eastern Sierra Nevada Mountains, Carson Valley, 1.35 mi. NE of Paynesville at junction of Fredericksburg Lane and US-88 (Carson Pass Hwy), 2.8 miles northeast of Woodfords 1340 Comment
  UCR258998  Vicia villosa subsp. villosa George K. Helmkamp, Amy Barnes 2014-9-16 23083 Alpine Eastern Sierra Nevada Mountains, Carson Valley, 1.35 mi. NE of Paynesville at junction of Fredericksburg Lane and US-88 (Carson Pass Hwy), 2.8 miles northeast of Woodfords 1340 Comment
  UCR88312  Mimulus tilingii George K. Helmkamp 1995-9-23 3 36 Alpine Sierra Nevada Mtns., W side of Sonora Pass just beyond Mono County line 2927 Comment
  UCR88315  Symphoricarpos rotundifolius var. rotundifolius George K. Helmkamp 1995-9-23 3 15 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  UCR88318  Cryptantha echinella George K. Helmkamp 1995-9-23 3- 17 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  CAS-BOT-BC227279  Lupinus albicaulis George K. Helmkamp; E. A. Helmkamp 2011-6-7 17487 Amador Northern Sierra Nevada Mountains Foothills: Shake Ridge Road, 7.6 rd. miles northeast (via Pine Gulch & Gopher Flat rds) of junction of Sutter Creek Rd. and Pine Gulch Rd. 712 Comment
  CAS-BOT-BC228608  Lepidium nitidum var. nitidum George K. Helmkamp; E. A. Helmkamp 2011-5-10 17232 Amador Northern Sierra Nevada Mountains Foothills: Turner Road, 0.8 miles south of its junction with Amador Creek Road, 0.95 mi. SE (119 deg. ) of Amador City 311 Comment
  CAS-BOT-BC228611  Acmispon parviflorus George K. Helmkamp; E. A. Helmkamp 2011-6-7 17460 Amador Northern Sierra Nevada Mountains Foothills: Pine Gulch Road, 0.5 mile north of its intersection with Sutter Creek Road 457 Comment
  CAS-BOT-BC248294  Solanum umbelliferum George K. Helmkamp; E. A. Helmkamp 2011-5-19 17296 Amador Lower Sierra Nevada Foothills: NW of Pardee Reservoir, 0.1 mile east of Rock Creek Road on a gravel spur leading to houses, 4.65 mi. SW (220 deg. ) of Jackson 280 Comment
  CAS-BOT-BC334216  Cryptantha affinis George K. Helmkamp; E. A. Helmkamp 2011-8-6 18015 Amador Northern Sierra Nevada Mountains: along dirt road 0.3 mile E of Bear River Reservoir Road, from a point 0.7 miles S of CA-88 1986 Comment
  CAS-BOT-BC438797  Chenopodium G. K. Helmkamp; E. A. Helmkamp 2007-9-4 12894 Amador Northern Sierra Nevada Mountains, west slope: Along CA-88 3.2 miles west of Hams Station along CA-88, just east of Cooks Station. 1527 Comment
  CAS-BOT-BC438808  Hosackia oblongifolia var. oblongifolia George K. Helmkamp; Elizabeth Helmkamp 2013-7-6 20967 Amador Northern Sierra Nevada Mountains: Bear River Road at the south end of the dam for Lower Bear River Reservoir. 1784 Comment
  CAS-BOT-BC438811  Helenium bigelovii George K. Helmkamp; Elizabeth Helmkamp 2013-7-6 20994 Amador Northern Sierra Nevada Mountains: Bear River Road, 1.5 road miles east of the dam for Lower Bear River Reservoir. 1837 Comment
  CAS-BOT-BC444032  Madia elegans George K. Helmkamp; Elizabeth Helmkamp 2013-8-11 22142 Amador Sierra Nevada Mountains Foothills: Sutter Creek-Volcano Road, 4.8 miles northeast of the town of Sutter Creek. 123 Comment
  CAS-BOT-BC520368  Plagiobothrys nothofulvus George K. Helmkamp 2014-4-5 22674 Amador Eastern San Joaquin Valley: Sutter Creek--Ione Road, 1.2 mi S of jct with CA-124 196 Comment
  CDA25626  Atriplex canescens subsp. canescens G. K. Helmkamp, E. A. Helmkamp 2007-10-13 13102 Amador Northern Sierra Nevada Mountains Foothills; Along Highway CA-49, 0.6 mile south of Plymouth. Comment
  CDA36229  Plantago lanceolata G. K. Helmkamp, E. A. Helmkamp 2009-9-22 15638 Amador Sierra Nevada Mountains Foothills; Junction of Shenandoah Road (CA Hwy 16) and Steiner Road, southwest of River Pines. Comment
  JEPS119448  Holocarpha virgata subsp. virgata George K. Helmkamp with E. A. Helmkamp 2008-10-23 14274 Amador San Joaquin Valley: 0.3 miles north of the gated entrance to the North Shore Residence area of Comanche Reservoir. Comment
  RSA0013374  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2010-9-1 16874 Amador Northern Sierra Nevada Mountains: along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, e. 2.75 mi NNW of Upper Bear River Reservoir. 2162 Comment
  RSA0013399  Montia parvifolia George K. Helmkamp, E. A. Helmkamp 2012-7-2 19298 Amador Bear River Road at the south end of the dam of Lower Bear River Reservoir 1774 Comment
  RSA0022101  Juglans hindsii George K. Helmkamp, E. A. Helmkamp 2009-8-24 15525 Amador San Joaquin Valley/ Sierra Nevada foothills: along CA-16, 1.1 miles west of its junction with CA-49, southwest of Plymouth. 220 Comment
  RSA0043182  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2010-6-23 16340 Amador Sierra Nevada Mtns Foothills: Sutter Creek Road, 7.2 mi NE of its junction with old CA-49 in Sutter Creek village. 473 Comment
  RSA0045222  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2006-10-6 11461 Amador Along Calif. Hwy 49 near Enterprise, 1.8 miles south of El Dorado Co. line. 274 Comment
  RSA0045225  Quercus douglasii George K. Helmkamp, E. A. Helmkamp 2006-10-6 11460 Amador Along Calif. Hwy 49 near Enterprise, 1.8 miles south of El Dorado Co. line. 274 Comment
  RSA0057866  Lotus purshianus var. purshianus George K. Helmkamp, Elizabeth A. Helmkamp 2013-9-7 22282 Amador Northern Sierra Nevada Mountains: on the south side of CA-88/Carson Pass Hwy, c. 0.3 mile west of the junction with Bear River Reservoir Road. 1934 Comment
  RSA0081173  Eleusine tristachya George K. Helmkamp, E. A. Helmkamp 2006-10-6 11473 Amador Along Calif. Hwy 49, 1.1 miles south of Plymouth. 314 Comment
  RSA0081178  Anagallis arvensis George K. Helmkamp, E. A. Helmkamp 2006-10-6 11479 Amador Along Calif. Hwy 49, 1.1 miles south of Plymouth. 314 Comment
  RSA0093529  Gilia capitata subsp. mediomontana George K. Helmkamp, E. A. Helmkamp 2012-6-6 19136 Amador Northern Sierra Nevada Mountains. Panther Creek Road, 1.5 miles south of its junction with CA-88, 5.0 mi. west (267 deg ) of Bear River Reservoir dam. 1590 Comment
  RSA0094835  Plectritis brachystemon George K. Helmkamp, Amy Barnes 2014-5-8 22857 Amador Sierra Nevada Mountains Foothills. Sutter Creek-Volcano Road, 0.2 mile east of old CA-49 in town of Sutter Creek. 375 Comment
  RSA0105156  Eschscholzia californica George K. Helmkamp 2014-3-14 22568 Amador West end Sacramento Valley: Willow Creek Road, 1.1 miles south of Hwy E-16. 253 Comment
  RSA725960  Dittrichia graveolens George K. Helmkamp, E. A. Helmkamp 2006-10-23 11567 Amador Central Valley/Northern Sierra Nevada Foothills: along CA-16, 0.2 mile east of Waits Station, southwest of Plymouth. 305 Comment
  RSA750320  Rhamnus tomentella subsp. tomentella George K. Helmkamp, E. A. Helmkamp 2008-9-28 14171 Amador Sutter Creek Rancho Road on the north side of CA-88 and 4.2 miles southwest of the junction of CA-88 and CA-49 287 Comment
  RSA750427  Mentha spicata var. spicata George K. Helmkamp, E. A. Helmkamp 2008-9-28 14170 Amador Sutter Creek Rancho Road on the north side of CA-88 and 4.2 miles southwest of the junction of CA-88 and CA-49 287 Comment
  RSA750428  Horkelia californica George K. Helmkamp, E. A. Helmkamp 2008-9-28 14165 Amador Sutter Creek Rancho Road on the north side of CA-88 and 4.2 miles southwest of the junction of CA-88 and CA-49 287 Comment
  RSA792070  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2012-7-14 19396 Amador Northern Sierra Nevada Mountains: edge of Martin Meadow along CA-88 (Carson Pass highway), 2.2 miles north of Silver Lake. 2317 Comment
  SD236139  Deschampsia danthonioides G. K. Helmkamp 2008-6-17 13662 Amador Northern Sierra Nevada Mountains: Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1990 Comment
  SD237429  Acmispon nevadensis var. nevadensis G. K. Helmkamp, E. A. Helmkamp 2009-8-6 15403 A Amador Sierra Nevada Mountains: Panther Creek Road, 0.4 mile south of its junction with CA-88; jct. is 4.0 miles NE of Cook's Station. 1590 Comment
  SD239480  Pellaea mucronata subsp. mucronata George K. Helmkamp, E. A. Helmkamp 2011-5-19 17290 Amador Lower Sierra Nevada Foothills: NW of Pardee Reservoir, 0.1 mile east of Rock Creek Road on a gravel spur leading to houses, 4.65 mi. SE (220a^z) of Jackson (Jackson 7.5'Q) 280 Comment
  SD241109  Clarkia biloba subsp. biloba George K. Helmkamp, E. A. Helmkamp 2011-6-17 17598 Amador Northern Sierra Nevada Mountains Foothills: along CA-26, 0.1 mile west pf the Calaveras Co. line at the bridge over the North Fork Mokelumne River, 1.6 me. SE (115a^z) of Pioneer (West Point 7.5'Q) 651 Comment
  SD241806  Croton setiger G. K. Helmkamp, E. A. Helmkamp 2009-9-22 15648 Amador Sierra Nevada Mountains Foothills: junction of Shenandoah Road (CA-16) and Steiner Road, southwest of River Pines (Fiddletown 7.5'Q) 750 Comment
  SD254531  Blennosperma nanum var. nanum George K. Helmkamp 2013-3-14 20173 Amador Central Sierra Nevada Foothills: S edge of city of Plymouth; along CA-49, 1.1 miles southwest of its junction with Fiddletown road (Amador City 7.5'Q) 319 Comment
  SD260215  Amsinckia intermedia George K. Helmkamp 2014-3-14 22562 Amador Eastern Sacramento Valley / Sierra Nevada Foothills: along Hwy E-16, 0.6 mile southwest of the junction with CA-49, c. 2.5 mi southwest of Plymouth. 249 Comment
  SEINET11262586  Gilia tricolor subsp. diffusa George Helmkamp, E. A. Helmkamp 2010-4-3 15795 Amador Low foothills northern Sierra Nevada Mountains: 4.35 mi. NE (311/4) of Ione, junction of Tonzi Road and CA-124/East Plymouth Hwy (Irish Hill 7.5' Q.).; 0 180 Comment
  SEINET11265992  Gilia leptalea subsp. leptalea George Helmkamp, E. A. Helmkamp 2011-8-6 17959 Amador Northern Sierra Nevada Mountains: Ellis Road, 2.1 miles south of its junction with CA-88 (Peddler Hill 7.5' Q.); 0 1794 Comment
  SEINET11266055  Linanthus ciliatus George Helmkamp, E. A. Helmkamp 2012-6-26 19279 Amador Northern Sierra Nevada Mountains: Panther Creek Road, 4.1 miles south of its junction with CA-88/Carson Pass Hwy. and W of Lower Bear Reservoir (Peddler Hill 7.5; Q.); 0 1518 Comment
  SEINET13203092 Image available Lupinus bicolor George K. Helmkamp, Mary Alice Barnes 2013-1 20563 Amador Sierra Nevada Mountains Foothills: along E-16/Shenandoah Rd., 3.6 miles south of River Pines, 4.15 air miles NE (39 deg. ) of Plymouth (Fiddletown 7.5' Q.) 517 Comment
  SEINET2473441 Image available Echinochloa crus-galli George K. Helmkamp, E. A. Helmkamp 2007-1 12819 Amador Northern Sierra Nevada Mountains Foothills; along Hwy CA-49 at the south end of Plymouth 323 Comment
  SEINET3246120  Castilleja applegatei G. K. Helmkamp, E. A. Helmkamp 2010-1 16509 Amador Northern Sierra Nevada Mountains: between the west shore of Silver Lake and CA-88. 2234 Comment
  SEINET3257997 Image available Castilleja applegatei subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2008-5-4 13394 Amador Sierra Nevada Mountains Foothills; along Tiger Creek Road, 0.3 mi east of the turnoff to Tiger Creek Reservoir. 774 Comment
  SEINET3258015 Image available Blennosperma nanum var. nanum George K. Helmkamp, E. A. Helmkamp 2008-3-12 13151 Amador Sierra Nevada Mountains Foothills; along CA-49 at the south end of Plymouth. 319 Comment
  SEINET3821591 Image available Elymus elymoides subsp. californicus George K. Helmkamp, E. A. Helmkamp 2012-1 19370 Amador Northern Sierra Nevada Mountains, Shot Rock Vista Rest Stop along CA-88 (Carson Pass Hwy), 1 mile west of the junction with Mormon Emigrant Trail (Tragedy Spring 7.5' Q 2329 Comment
  SEINET3821624 Image available Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2010-3-26 15772 Amador Eastern San Joaquin Valley/ Sierra Nevada Foothills, low foothills along CA-16, 6.8 miles west of Plymouth near Forest Home Rd. (Irish Hill 7.5' Q) 177 Comment
  SEINET3828502  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2010-1 16999 Amador Northern Sierra Nevada Mountains Foothills: Shake Ridge Road, 1.1 miles southwest of its junction with Hale Road, 2.5 mi NW (285 degrees) of Volcano (Pine Grove 7.5') 692 Comment
  SEINET3837933  Festuca dertonensis George K. Helmkamp, E. A. Helmkamp 2010-3-26 157769 Amador Eastern San Joaquin Valley/ Sierra Nevada Foothills: low foothills along CA-16, 6.8 miles W of Plymouth near Forest Home Rd. (Irish Hill) 177 Comment
  SEINET3860452  Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 2010-5-31 16152 Amador Sierra Nevada Mountains Foothills: Church Street, becoming Sutter Creek-Volcano Road, 0.2 mile east of the village of Sutter Creek.; 0 402 Comment
  SEINET3888628  Triteleia ixioides subsp. anilina George K. Helmkamp, E. A. Helmkamp 2008-6-9 13627 Amador Northern Sierra Nevada Mountains: Panther Creek Road, ca 0.1 mile south of its junction with CA-88, jct is 4.0 miles east of Cook's Station (Peddler Hill 7.5' Q.).; 0 504 Comment
  SEINET4137611 Image available Gilia capitata subsp. pedemontana George K. Helmkamp, E. A. Helmkamp 2010-5-31 16184 Amador Sierra Nevada Mountain Foothills; Sutter Creek- Volcano Road, 3.3 miles east of village of Sutter Creek 413 Comment
  SEINET4691429  Ceanothus cuneatus George K. Helmkamp, E. A. Helmkamp 2010-1 15817 Amador Sierra Nevada Mountains Foothills: Fiddletown road (= Oleta Road), 2.9 miles east of CA-49 in Plymouth. 172 Comment
  UC2015365  Penstemon azureus var. azureus G. K. Helmkamp, E. A. Helmkamp 2011-9-16 18301 Amador Northern Sierra Nevada Mountains Foothills: along CA-26 (Red Corral Rd.), 2.2. miles north of hte crossing over North Fork Mokelumne River, 1 mile SSE (159 deg. ) of Pioneer Comment
  UC2044599  Grindelia hirsutula George K. Helmkamp with Elizabeth Helmkamp 2013-9-13 22292 Amador Northern Sierra Nevada Mountains Foothills Volcano Road; 0.1 mile northwest of the village of Volcano. (Tragedy Spring 7.5' Q.) Comment
  UCD107026  Lupinus benthamii G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11827 Amador Northern Sierra Nevada Mountains: along CA E-16, 0.7 mile south of River Pines. 610 Comment
  UCD111147  Trifolium hirtum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-6 10301 Amador Northern Sierra Nevada foothills: along Hwy CA-49, 0.3 mile south of Drytown. 226 Comment
  UCD138656  Allium validum G. K. Helmkamp; E. A. Helmkamp 2007-7-17 12519 Amador Northern Sierra Nevada Mountains: along CA-88 at Martin Meadow, 2.2 miles north of Silver Lake. 2316 Comment
  UCD62284  Elymus glaucus subsp. glaucus G. K. Helmkamp; Elizabeth Helmkamp 2006-5-9 10359 Amador Northern Sierra Nevada Foothills: Along CA Hwy 88, 0.9 mi. S of the El Dorado County line at Enterprise. 274 Comment
  UCD66099  Agrostis scabra G. K. Helmkamp; E. A. Helmkamp 2007-8-16 12761 Amador Northern Sierra Nevada Mountains: along the south side of Bear River Reservoir just east of the spillway. 1777 Comment
  UCD66101  Agrostis variabilis G. K. Helmkamp 2007-6-29 12435 Amador Northern Sierra Nevada Mountains: Kirkwood Meadows about one mile west of Kirkwood and 0.1 mile south of CA-88. 2317 Comment
  UCD95372  Eschscholzia lobbii G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11809 Amador Northern Sierra Nevada Mountains; junction of Tonzi Road and CA-124 about 7 miles north of Ione. 229 Comment
  UCD99636  Mollugo verticillata G. K. Helmkamp; E. A. Helmkamp 2006-10-23 11559 Amador Northern Sierra Nevada Foothills/Central Valley; along CA-16, 0.2 mile east of Waits Station, southwest of Plymouth. 305 Comment
  UCR173370  Trifolium willdenovii George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10354 Amador Northern Sierra Nevada Foothills, Along Calif. Hwy 88, 0.9 mi. south of the El Dorado County line at Enterprise 274 Comment
  UCR173471  Luzula comosa George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10350 Amador Northern Sierra Nevada Foothills, ESE of Sacramento; 3.2 mi. east of Pine Grove along Calif. Hwy 88 841 Comment
  UCR173606  Cardamine hirsuta George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10169 Amador Northern Sierra Nevada Foothills, E of Sacramento, SW of Shenandoah Valley; along Calif. Hwy 49, c. 4.5 mi north of Plymouth 341 Comment
  UCR173610  Lupinus succulentus George K. Helmkamp, Elizabeth Helmkamp 2006-5-6 10316 Amador Northern Sierra Nevada foothills, middle of the city Jackson, 0.1 mile north of the junction of Calif. Hwy 49 and Calif. Hwy 88 378 Comment
  UCR173651  Eschscholzia californica George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10155 Amador Northern Sierra Nevada Foothills, ESE of Sacramento; 1.0 mi south of Plymouth along Calif. Hwy 49 326 Comment
  UCR173658  Spartium junceum George K. Helmkamp, Elizabeth Helmkamp 2006-5-6 10309 Amador Northern Sierra Nevada foothills, middle of the city Jackson, 0.1 mile north of the junction of Calif. Hwy 49 and Calif. Hwy 88 378 Comment
  UCR173681  Potentilla glandulosa George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10319 Amador Northern Sierra Nevada foothills, Climax Road southwest of Pine Grove, 0.1 mile west of Calif. Hwy 88 701 Comment
  UCR179744  Leontodon taraxacoides George K. Helmkamp, E. A. Helmkamp 2006-10-6 11468 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49 beside Big Indian Creek; 2.2 miles south of El Dorado County line 271 Comment
  UCR179793  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2006-10-6 11475 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49, 1.1 miles south of Plymouth 314 Comment
  UCR179816  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2006-10-6 11474 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49, 1.1 miles south of Plymouth 314 Comment
  UCR182143  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2006-10-23 11561 Amador Central Valley/ Northern Sierra Nevada Foothills, along Calif. Hwy 16, 0.2 mile east of Waits Station, southwest of Plymouth 305 Comment
  UCR184973  Calandrinia ciliata George K. Helmkamp, E. A. Helmkamp 2007-4-23 11810 Amador Foothills, Northern Sierra Nevada Mountains, junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione 229 Comment
  UCR185233  Stellaria media George K. Helmkamp, E. A. Helmkamp 2007-4-23 11787 Amador Foothills, Northern Sierra Nevada Mountains, along Bell Road beside Plymouth Creek just east of Calif. Hwy 49 in the vicinity of Enterprise 302 Comment
  UCR187295  Ranunculus californicus George K. Helmkamp, E. A. Helmkamp 2007-4-5 11734 Amador Foothills, Northern Sierra Nevada Mountains, Sutter to Ione Road, 0.4 mi east of CA-49, northeast of Ione 180 Comment
  UCR189432  Chenopodium botrys George K. Helmkamp, E. A. Helmkamp 2007-8-16 12772 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 0.9 mile northeast of the junction with Bear River Reservoir Road 2076 Comment
  UCR189484  Claytonia perfoliata George K. Helmkamp, E. A. Helmkamp 2007-3-17 11640 Amador Sacramento Valley/ Sierra Nevada Foothills, Hwy CA-24, 3.2 mi southwest of Plymouth near Tonzi Road 210 Comment
  UCR189516  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2007-8-16 12738 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.0 mile south of the junction with Mormon Emigrant Trail 2172 Comment
  UCR189648  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2007-8-16 12774 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 0.9 mile northeast of the junction with Bear River Reservoir Road 2076 Comment
  UCR190142  Agrostis stolonifera George K. Helmkamp, E. A. Helmkamp 2007-9-4 12893 Amador Northern Sierra Nevada Mountains, along CA-88 at Mile-49, 3.1 miles east of Hams Station 1860 Comment
  UCR190211  Heteromeles arbutifolia George K. Helmkamp, E. A. Helmkamp 2007-9-4 12900 Amador Northern Sierra Nevada Mountains Foothills, Climax Road 0.8 mile west of its junction with CA-88 701 Comment
  UCR190719  Agrostis variabilis George K. Helmkamp 2007-6-29 12435 Amador Northern Sierra Nevada Mountains, Kirkwood Meadows about one mile west of Kirkwood and 0.1 mile south of CA-88 2317 Comment
  UCR191112  Eragrostis pectinacea var. miserrima George K. Helmkamp, E. A. Helmkamp 2007-8-26 12818 Amador Northern Sierra Nevada Mountains Foothills, along Hwy CA-49 at the south end of Plymouth 323 Comment
  UCR196782  Madia gracilis George K. Helmkamp 2008-6-17 13672 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR196831  Ribes viscosissimum George K. Helmkamp 2008-6-17 13685 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road along the south side of Bear River Reservoir 1797 Comment
  UCR196847  Poa cusickii George K. Helmkamp 2008-6-17 13682 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road along the south side of Bear River Reservoir 1797 Comment
  UCR196848  Senecio integerrimus var. major George K. Helmkamp 2008-6-17 13677 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR197291  Lithophragma tenellum George K. Helmkamp, E. A. Helmkamp 2008-6-23 13739 Amador Northern Sierra Nevada Mountains, Dufrene Road, 1.5 miles south of its junction with CA-88, jct. between Mormon Emigrant Trail and Bear Valley Reservoir Road 2021 Comment
  UCR197799  Fritillaria micrantha George K. Helmkamp, E. A. Helmkamp 2008-6-9 13622 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.1 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station 1652 Comment
  UCR197801  Carex hassei George K. Helmkamp, E. A. Helmkamp 2008-6-23 13726 Amador Northern Sierra Nevada Mountains, Dufrene Road, 1.1 miles south of its junction with CA-88 (jct. is between Mormon Emigrant Trail and Bear River Reservoir Road), c. 2 miles (air) north of the west end of Lower Bear River Reservoir 2055 Comment
  UCR200906  Gnaphalium canescens subsp. thermale George K. Helmkamp, E. A. Helmkamp 2008-8-30 14061 Amador Northern Sierra Nevada Mountains, along Cole Creek Road near the crossing of Cole Creek 6.8 miles east of the Bear River Reservoir dam 1857 Comment
  UCR201543  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2008-9-28 14169 Amador Foothills, northern Sierra Nevada Mountains, Sutter Creek Rancho Road on the north side of CA-88 and 4.2 miles southwest of the junction of CA-88 and CA-49 287 Comment
  UCR206604  Veratrum californicum var. californicum George K. Helmkamp, Ann Kerchner 2009-7-25 15287 Amador Sierra Nevada Mountains, south side of CA-88, 3.2 miles west of the Alpine Co. line; near Martin Meadow 2306 Comment
  UCR206612  Madia glomerata George K. Helmkamp, Ann Kerchner 2009-7-25 15290 Amador Sierra Nevada Mountains, south side of CA-88, 3.2 miles west of the Alpine Co. line; near Martin Meadow 2306 Comment
  UCR209570  Holocarpha virgata subsp. virgata George K. Helmkamp, E. A. Helmkamp 2009-8-24 15523 Amador Sierra Nevada Mountains Foothills, along CA-49 at the junction with Fiddletown Road in the city of Plymouth 314 Comment
  UCR217839  Raphanus raphanistrum George K. Helmkamp, E. A. Helmkamp 2010-5-31 16155 Amador Sierra Nevada Mountains Foothills, Church Street, becoming Sutter Creek-Volcano Road, 0.2 mile east of the village of Sutter Creek 402 Comment
  UCR217844  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2010-5-31 16182 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 3.3 miles east of the village of Sutter Creek 413 Comment
  UCR218993  Delphinium nuttallianum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16521 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219035  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, E. A. Helmkamp 2010-7-13 16529 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219045  Delphinium gracilentum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16515 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219064  Galium trifidum var. pusillum George K. Helmkamp, E. A. Helmkamp 2009-9-15 15613 Amador Northern Sierra Nevada Mountains, south side of Bear River Reservoir, 0.1 mile east of the dam 1774 Comment
  UCR219069  Hypericum perforatum George K. Helmkamp, E. A. Helmkamp 2009-9-15 15619 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.2 mile south of its junction with CA-88, 5.2 air mi. west of Bear River Reservoir 1622 Comment
  UCR219179  Dudleya cymosa subsp. cymosa George K. Helmkamp, E. A. Helmkamp 2010-6-23 16363 Amador Sierra Nevada Mountains Foothills, Sutter Creek Road, 9.5 miles northeast of its junction with old CA-49 in Sutter Creek village 576 Comment
  UCR219190  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2009-9-22 15642 Amador Sierra Nevada Mountains Foothills, junction of Shenandoah Road (CA-16) and Steiner Road, southwest of River Pines 750 Comment
  UCR230062  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2011-5-19 17299 Amador Lower Sierra Nevada Foothills, NW of Pardee Reservoir, 0.1 mile east of Rock Creek Road on a gravel spur leading to houses, 4.65 mi. SW (220 deg. ) of Jackson 280 Comment
  UCR230085  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2011-6-7 17484 Amador Northern Sierra Nevada Mountains Foothills, Shake Ridge Road, 7.6 rd. miles northeast (via Pine Gulch & Gopher Flat rds) of junction of Sutter Creek Rd. and Pine Gulch Rd. 712 Comment
  UCR230106  Rhamnus californica subsp. tomentella George K. Helmkamp, E. A. Helmkamp 2011-5-19 17304 Amador Lower Sierra Nevada Foothills, Rock Creek Road, 2.8 miles northeast of the junction with Pardee Dam Road, 4.9 mi. SW (221 deg. ) of Jackson 305 Comment
  UCR230666  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2011-5-10 17226 Amador Northern Sierra Nevada Mountains Foothills, Turner Road, 0.8 miles south of its junction with Amador Creek Road, 0.95 mi. SE (119 deg. ) of Amador City 311 Comment
  UCR230717  Quercus chrysolepis George K. Helmkamp, E. A. Helmkamp 2010-10-1 16988 A Amador Northern Sierra Nevada Mountains Foothills, Shake Ridge Road, 0.8 mile southwest of its junction with Fiddletown Road, 3.5 miles NE (32 deg. ) of Volcano 976 Comment
  UCR230718  Mentha spicata var. spicata George K. Helmkamp, E. A. Helmkamp 2010-10-1 16990 Amador Northern Sierra Nevada Mountains Foothills, Shake Ridge Road, 1.1 miles southwest of its junction with Hale Road, 2.5 mi. NW (285 deg. ) of Volcano 692 Comment
  UCR231005  Centaurium muehlenbergii George K. Helmkamp, E. A. Helmkamp 2011-6-22 17615 Amador Northern Sierra Nevada Mountains Foothills, Sutter-Ione Road, 2.7 miles west of its junction with CA-49, 2.9 mi. SW (221 deg. ) of Amador City 308 Comment
  UCR233330  Juncus ensifolius George K. Helmkamp, E. A. Helmkamp 2011-8-6 17983 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR233340  Eriogonum nudum var. nudum George K. Helmkamp, E. A. Helmkamp 2011-8-6 17966 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR234605  Rorippa curvipes var. truncata George K. Helmkamp, E. A. Helmkamp 2011-8-6 18018 Amador Northern Sierra Nevada Mountains, along dirt road 0.3 mile east of Bear River Reservoir Road, from a point 0.7 mile south of CA-88 1986 Comment
  UCR235414  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2012-4-19 18789 Amador Northern Sierra Nevada Mountains Foothills, Bunker Hill Road at the junction with N Amador Road, c. 0.5 mi. N of Amador City 299 Comment
  UCR237294  Rorippa George K. Helmkamp, E. A. Helmkamp 2012-7-2 19317 Amador Northern Sierra Nevada Mountains, Bear River Road, 3.0 miles east of the Lower Bear River Reservoir dam 1816 Comment
  UCR237726  Rorippa curvipes var. curvipes George K. Helmkamp, E. A. Helmkamp 2012-7-14 19382 Amador Northern Sierra Nevada Mountains, Shot Rock Vista Rest Stop along CA-88 (Carson Pass Hwy), 1 mile west of the junction with Mormon Emigrant Trail 2329 Comment
  UCR237730  Carex multicostata George K. Helmkamp, E. A. Helmkamp 2012-7-14 19373 Amador Northern Sierra Nevada Mountains, Shot Rock Vista Rest Stop along CA-88 (Carson Pass Hwy), 1 mile west of the junction with Mormon Emigrant Trail 2329 Comment
  UCR237740  Mertensia oblongifolia var. nevadensis George K. Helmkamp, E. A. Helmkamp 2012-7-14 19398 Amador Northern Sierra Nevada Mountains, edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 miles north of Silver Lake 2317 Comment
  UCR238607  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2012-3-22 18641 Amador Northern Sierra Nevada Mountains Foothills, Bell Road, 0.2 mile east of its junction with CA-49 270 Comment
  UCR240934  Dichelostemma multiflorum George K. Helmkamp, E. A. Helmkamp 2012-6-26 19282 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 8.0 miles south of its junction with CA-88, along East Panther Creek 1345 Comment
  UCR240939  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2012-6-26 19287 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 8.0 miles south of its junction with CA-88, along East Panther Creek 1345 Comment
  UCR240971  Mentha spicata var. spicata George K. Helmkamp, E. A. Helmkamp 2012-10-5 19968 Amador Northern Sierra Nevada Mountains Foothills, beside Sutter Creek along the Sutter Creek-Volcano Road, 0.6 mile southwest of Meadowlark Lane 421 Comment
  UCR241334  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2012-9-20 19881 Amador Northern Sierra Nevada Mountains Foothills, along Hwy E-26 (Red Corral/West Point-Pioneer Rd.) just north of the bridge over the North Fork Mokelumne River 613 Comment
  UCR241365  Lupinus grayi George K. Helmkamp, E. A. Helmkamp 2012-6-26 19267 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.9 mile south of its junction with CA-88, S of Hwy 88/Carson Pass Hwy. and W of Lower Bear Reservoir 1617 Comment
  UCR241371  Ceanothus parvifolius George K. Helmkamp, E. A. Helmkamp 2012-6-26 19270 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.9 mile south of its junction with CA-88, S of Hwy 88/Carson Pass Hwy. and W of Lower Bear Reservoir 1617 Comment
  UCR241377  Stachys ajugoides var. rigida George K. Helmkamp, E. A. Helmkamp 2012-6-26 19263 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.9 mile south of its junction with CA-88, S of Hwy 88/Carson Pass Hwy. and W of Lower Bear Reservoir 1617 Comment
  UCR241378  Agrostis thurberiana George K. Helmkamp, E. A. Helmkamp 2012-6-26 19269 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.9 mile south of its junction with CA-88, S of Hwy 88/Carson Pass Hwy. and W of Lower Bear Reservoir 1617 Comment
  UCR241983  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2012-9-7 19784 Amador Northern Sierra Nevada Mountains Foothills, along CA-49 in Plymouth; 0.1 mile south of its junction with Fiddletown Rd./Plymouth-Shenandoah Rd. 303 Comment
  UCR242615  Eriogonum nudum var. nudum George K. Helmkamp, E. A. Helmkamp 2010-9-1 16881 Amador Northern Sierra Nevada Mountains, along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, c. 2.75 mi. NNW of Upper Bear River Reservoir 2162 Comment
  UCR242792  Eriogonum umbellatum var. polyanthum George K. Helmkamp, E. A. Helmkamp 2010-9-1 16913 Amador Northern Sierra Nevada Mountains, Dufrene Road 0.7 mile east of its junction with CA-88, north of Lower Bear River Reservoir 2044 Comment
  UCR242818  Aster integrifolius George K. Helmkamp, E. A. Helmkamp 2010-9-1 16882 A Amador Northern Sierra Nevada Mountains, along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, c. 2.75 mi. NNW of Upper Bear River Reservoir 2162 Comment
  UCR242820  Gilia capillaris George K. Helmkamp, E. A. Helmkamp 2010-9-1 16883 Amador Northern Sierra Nevada Mountains, along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, c. 2.75 mi. NNW of Upper Bear River Reservoir 2162 Comment
  UCR242836  Aster eatonii George K. Helmkamp, E. A. Helmkamp 2010-9-1 16888 Amador Northern Sierra Nevada Mountains, along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, c. 2.75 mi. NNW of Upper Bear River Reservoir 2162 Comment
  UCR246404  Geranium molle George K. Helmkamp, E. A. Helmkamp 2012-3-22 18624 Amador Northern Sierra Nevada Mountains Foothills, Rancho Cicada Retreat; private road, 1.1 miles north of Bell Road on east side of Middle Fork Cosumnes River 255 Comment
  UCR246409  Erodium cicutarium George K. Helmkamp, E. A. Helmkamp 2012-3-22 18629 Amador Northern Sierra Nevada Mountains Foothills, Bell Road, 1.2 miles east of CA-49 at private road to Rancho Cicada Retreat 371 Comment
  UCR246580  Ceanothus integerrimus George K. Helmkamp, E. A. Helmkamp 2012-6-6 19133 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 1.5 miles south of its junction with CA-88, 5.0 mi. west (267 deg. ) of Bear River Reservoir dam 1590 Comment
  UCR246646  Iris hartwegii subsp. hartwegii George K. Helmkamp, E. A. Helmkamp 2012-6-6 19152 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 5.8 miles south of its junction with CA-88, 6.2 mi. SW (246 deg. ) of Bear River Reservoir dam 1465 Comment
  UCR246650  Cryptantha simulans George K. Helmkamp, E. A. Helmkamp 2012-6-6 19128 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.1 miles west of Cooks Station 1439 Comment
  UCR252934  Lotus nevadensis var. nevadensis George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20959 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.6 mile south of its junction with Hwy CA-88 1633 Comment
  UCR252952  Elymus glaucus George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20962 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.6 mile south of its junction with Hwy CA-88 1633 Comment
  UCR252965  Mimulus moschatus George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20963 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 Comment
  UCR252971  Mentha spicata var. spicata George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22143 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 4.8 miles northeast of the town of Sutter Creek 405 Comment
  UCR252982  Oenanthe sarmentosa George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22147 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 11.3 miles northeast of the town of Sutter Creek 582 Comment
  UCR252993  Atriplex canescens subsp. canescens George K. Helmkamp, E. A. Helmkamp 2013-11-15 22486 Amador Sierra Nevada Mountains Foothills, along Hwy CA-49, 1.0 mile south of Plymouth 303 Comment
  UCR253477  Brassica kaber George K. Helmkamp 2014-4-5 22690 Amador Eastern edge of San Joaquin Valley/lower Sierra Nevada Foothills, Sutter Creek along West Marlette Street, 0.1 mile east of Dave Brubeck Road, west end of city of Ione 85 Comment
  UCR253478  Festuca myuros var. hirsuta George K. Helmkamp 2014-4-5 22689 Amador Eastern edge of San Joaquin Valley/lower Sierra Nevada Foothills, Sutter Creek along West Marlette Street, 0.1 mile east of Dave Brubeck Road, west end of city of Ione 85 Comment
  UCR253482  Geranium dissectum George K. Helmkamp 2014-4-5 22684 Amador Eastern edge of San Joaquin Valley/lower Sierra Nevada Foothills, Sutter Creek along West Marlette Street, 0.1 mile east of Dave Brubeck Road, west end of city of Ione 85 Comment
  UCR253510  Amsinckia retrorsa George K. Helmkamp 2014-4-5 22659 Amador Sierra Nevada Foothills, junction of Tonzi Road and CA-124, NE of Ione 201 Comment
  UCR253521  Lonicera conjugialis George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20971 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 Comment
  UCR253587  Mimulus guttatus George K. Helmkamp 2014-4-5 22658 Amador Sierra Nevada Foothills, junction of Tonzi Road and CA-124, NE of Ione 201 Comment
  UCR253588  Veronica persica George K. Helmkamp 2014-4-5 22673 Amador Eastern San Joaquin Valley, Sutter Creek-Ione Road, 1.2 miles south of its junction with CA-124 197 Comment
  UCR253596  Melilotus albus George K. Helmkamp, Elizabeth Helmkamp 2012-11-5 20120 Amador Sierra Nevada Mountains Foothills, Along CA-26 on the north side of the bridge over the North Fork Mokelumne River 628 Comment
  UCR254116  Leontodon taraxacoides George K. Helmkamp 2014-4-5 22678 Amador Eastern Edge of San Joaquin Valley, 1.7 miles northeast of Ione along Hwy CA-124 175 Comment
  UCR257061  Mimulus aurantiacus George K. Helmkamp, Mary Alice Barnes 2013-5-17 20612 Amador Northern Sierra Nevada Mountains Foothills, Stony Creek Road, 6.8 miles southwest of Jackson, 0.57 mi. NE (20 deg. ) of Chrome Mountain 302 Comment
  UCR257067  Rubus armeniacus George K. Helmkamp, Mary Alice Barnes 2013-5-17 20609 Amador Northern Sierra Nevada Mountains Foothills, Stony Creek Road, 3.6 miles southwest of Jackson 293 Comment
  UCR257068  Carduus pycnocephalus George K. Helmkamp, Mary Alice Barnes 2013-5-17 20608 Amador Northern Sierra Nevada Mountains Foothills, Stony Creek Road, 3.6 miles southwest of Jackson 293 Comment
  UCR257103  Mimulus layneae George K. Helmkamp, Mary Alice Barnes 2013-5-13 20600 Amador Sierra Nevada Mountains, Shake Ridge Road, 16.7 miles northeast of its junction with E-16 via Fiddletown Rd. 983 Comment
  UCR257165  Campanula exigua George K. Helmkamp, Mary Alice Barnes 2013-5-17 20615 Amador Foothills, Northern Sierra Nevada Mountains, Stony Creek Road, 8.7 miles southwest of Jackson, 0.58 mi. NNE (07 deg. ) of Chrome Mountain 308 Comment
  UCR257563  Bromus diandrus George K. Helmkamp, Elizabeth Helmkamp 2014-2-20 22518 Amador Sierra Nevada Mountains Foothills, Plymouth; junction of Mill St. and Mineral St. 329 Comment
  UCR258135  Euphorbia serpillifolia subsp. serpillifolia George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19545 Amador Northern Sierra Nevada Mountains, Plasse Road, 0.4 mile south of its junction with CA-88, SW of Silver Lake 2262 Comment
  UCR258973  Euphorbia serpillifolia subsp. serpillifolia George K. Helmkamp, Amy Barnes 2014-10-10 23132 Amador Northern Sierra Nevada Mountains, west side of Bear River Reservoir, 0.2 mile north of the dam 1796 Comment
  UCR259890  Polygonum hydropiper George K. Helmkamp, Elizabeth Helmkamp 2013-10-18 22442 Amador Sierra Nevada Mountains Foothills, Plymouth, at the junction of Mineral Street and Mill Street, near Hwy CA-49 329 Comment
  UCR261995  Agrostis idahoensis George K. Helmkamp, Amy Barnes 2014-10-10 23145 Amador Northern Sierra Nevada Mountains, Plasse Road at the south end of Silver Lake and 0.1 mile north of Plasse's Resort 2215 Comment
  UCD99411  Stellaria media G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11787 Amador Northern Sierra Nevada Mountains; along Bell Road beside Plymouth Creek just east of CA-49 in the vicinity of Enterprise. Comment
  SD239927  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2012-4-14 18753 Butte Northwestern Sacramento Valley: Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82a^z) of Gridley. 91 Comment
  SD240919  Cryptantha flaccida George K Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70,near the Feather River (Palermo 7.5'Q) 46 Comment
  UCR219100  Polygonum lapathifolium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15604 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  UCR237299  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 2012-4-14 18750 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  UCR237325  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18746 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CAS-BOT-BC168245  Geranium molle G. K. Helmkamp; E. A. Helmkamp 2008-3-22 13237 Calaveras Sierra Nevada Mountains Foothills: along Mokelumne Vista Road at the junction with CA-49, just west of Mokelumne Hill village 479 Comment
  CAS-BOT-BC370754  Lasthenia platycarpha G. K. Helmkamp; E. A. Helmkamp 2008-3-22 13216 Calaveras San Joaguin Valley / Sierra Nevada Mountains Foothills: 1.8 miles north of Burson Rd., at the junction of Comanche Parkway South and Pattison Way (Wallace 7.5' Q.) 122 Comment
  JEPS119443  Madia gracilis George K. Helmkamp with E. A. Helmkamp 2012-5-15 18972 Calaveras nSNF: along Murray Creek Road (Murraydale Lane), 1.4 miles east of Pope Road in San Andreas. Comment
  RSA0012153  Festuca microstachys var. pauciflora George K. Helmkamp, E. A. Helmkamp 2012-4-4 18704 Calaveras along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  RSA0053700  Bromus hordeaceus G. K. Helmkamp, E. A. Helmkamp 2013-5-24 20694 Calaveras Northern Sierra Nevada Mountains Foothills: Whiskey Slide Road, just east of West Murray Creek Road, c. 4.7 miles SE of Jesus Maria Road. 677 Comment
  RSA0093484  Salsola tragus George K. Helmkamp, E. A. Helmkamp 2012-9-21 19893 Calaveras Eastern San Joaquin Valley. Milton/Jenny Lind Road (Co. Rd J14), 2.3 miles south of Jenny Lind Rd. junction with CA-26, south of Rancho Calaveras & east of Linden. 102 Comment
  RSA0093517  Lythrum hyssopifolia George K. Helmkamp, Mary Alice Barnes 2013-5-17 20625 Calaveras Northern Sierra Nevada Mountains Foothills. Poloma Road at its junction with Cosgrove Creek Road, 3 miles NE (30 deg ) of Valley Springs. 279 Comment
  RSA0093523  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2012-9-21 19886 Calaveras Eastern San Joaquin Valley. Jenny Lind Road (Co. Rd J14), 0.2 mile south of its junction with CA-26, WSW of Rancho Calaveras. 99 Comment
  RSA0093528  Nemophila heterophylla George K. Helmkamp, Mary Alice Barnes 2013-4-24 20396 Calaveras Northern Sierra Nevada Mountains Foothills. Along CA-26 (West Point-Pioneer Rd.), at the west side of the bridge over North Fork Mokelumne River. 654 Comment
  RSA725799  Grindelia camporum var. camporum George K. Helmkamp, E. A. Helmkamp 2006-10-8 11487 Calaveras Northern Sierra Nevada Mountains Foothills: along Hwy CA-26, 0.8 mi east of CA-49 in the vicinity of Mokulumne Hill. 488 Comment
  RSA792004  Phacelia hastata var. compacta George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18051 Calaveras Black Springs Road (Forest Route 6N45?), 1.7 miles north of its junction with CA Hwy 4 2058 Comment
  RSA794894  Madia exigua George K. Helmkamp, E. A. Helmkamp 2011-7-12 17728 Calaveras Winton Road (Forest Route 7N03), 12.6 miles east of its junction with CA-26 in West Point. 1503 Comment
  SBBG128820  Hordeum murinum subsp. leporinum G. K. Helmkamp, E. A. Helmkamp 2012-2-3 18529 Calaveras junction of Paloma Rd and Gillam Rd, NE of Valley Springs and SE of Pardee Reservoir 285 Comment
  SBBG129038  Collinsia bartsiifolia var. bartsiifolia G. K. Helmkamp, E. A. Helmkamp 2012-5-31 19090 Calaveras CA-26 E of Mokelumne Hill, at the crossing of the S Fork Mokelumne River 614 Comment
  SBBG129236  Trifolium glomeratum G. K. Helmkamp, E. A. Helmkamp 2013-5-24 20704 Calaveras N side of Mokelumne River, W of Big Bar Rd and the CA-49 bridge 198 Comment
  SBBG129331  Nemophila heterophylla G. K. Helmkamp, E. A. Helmkamp 2013-5-24 20680 Calaveras Whiskey Slide Rd, just E of W Murray Crk Rd, ca. 4.7 mi SE of Jesus Maria Rd 677 Comment
  SD197792  Geranium pusillum G. K. Helmkamp, E. A. Helmkamp 2007-4-26 11854 Calaveras Northern Sierra Nevada Mountains: Mokelumne Vista, 0.4 miles south of CA-49 and Mokelumne Hill 441 Comment
  SD236310  Nemophila heterophylla G. K. Helmkamp, E. A. Helmkamp 2008-3-18 13186 Calaveras Sierra Nevada Mountains Foothills: Jesus Maria Road, 2.4 miles southeast of its junction with CA-26; beside Jesus Maria Creek 305 Comment
  SD239627  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2011-7-12 17731 Calaveras Northern Sierra Nevada Mountains Foothills: Winton Road (Forest Route 7N03), 14.4. miles east of its junction with CA-26 in West Point (Garnet Hill 7.5'Q) 1590 Comment
  SD239687  Spergularia bocconi George K. Helmkamp, E. A. Helmkamp 2012-4-4 18682 Calaveras Northern San Joaquin Valley: along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Sprints. (Valley Springs 7.5'Q) 67 Comment
  SD239910  Collinsia sparsiflora var. collina George K. Helmkamp, E. A. Helmkamp 2011-5-21 17342 Calaveras Northern Sierra Nevada Mountains Foothills: Railroad Flat Road at the junction with Cedar Ridge Road, 10.5 mi ENE (87a^z) of Mokelumne Hill (Rail Road Flat 7.5'Q) 846 Comment
  SD240860  Erigeron strigosus George K. Helmkamp, E. A. Helmkamp 2010-8-3 16712 Calaveras Northern Sierra Nevada Mountains: along CA-4 across the highway from Calaveras State Park, 2.7 mi. NE (54a^z) of Arnold. 1448 Comment
  SD241091  Limnanthes alba subsp. versicolor George K. Helmkamp, E. A. Helmkamp 2012-4-4 18679 Calaveras Northern San Joaquin Valley: along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs (Valley Springs 7.5'Q) 67 Comment
  SD241186  Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 2012-5-15 18967 Calaveras Northern Sierra Nevada Mountains Foothills: along Murray Creek Road (Murreydale Lane), 1.4 miles east of Pope Road in San Andreas (San Andreas 7.5'Q) 387 Comment
  SD243098  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2011-9-16 18298 Calaveras Northern Sierra Nevada Mountains Foothills:along Railroad Flat Road, 2.2 miles southeast of its junction with CA-26, 0.4 mile SE of Wilseyville (Rail Road Flat 7.5'Q) 894 Comment
  SD248356  Plagiobothrys austiniae George K. Helmkamp 2013-3-14 20187 Calaveras San Joaquin Valley/Sierra Nevada Foothills: Jenny Lind Road (County Road J14) 0.1 mile north of its junction with Kirby Road, 24 mile NE of Stockton (Valley Springs 7.5'Q) 91 Comment
  SD254620  Lupinus microcarpus var. densiflorus George K. Helmkamp, Mary Alice Barnes 2013-5-17 20646 Calaveras Northern Sierra Nevada Mountains Foothills; along CA Hwy 26, 0.4mile northeast of its junction with Campo Seco Turnpike Road, SW of Mokelumne Hill. 438 Comment
  SD255658  Madia elegans subsp. vernalis George K. Helmkamp, Amy Barnes 2013-9-23 22303 Calaveras Sierra Nevada Mountains Foothills: Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its juction with CA-4 (Murphy's 7.5'Q) 974 Comment
  SD260212  Parvisedum pumilum George K. Helmkamp, Mary Alice Barnes 2013-4-24 20409 Calaveras Northern Sierra Nevada Mountains Foothills: Winton Road, 1.9 milse east of its juncton with CA-26 in West Point (West Point 7.5'Q) 651 Comment
  SEINET11261730  Trifolium dubium George Helmkamp, E. A. Helmkamp 2012-5-15 18973 Calaveras Northern Sierra Nevada Mountains Foothills: along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas (San Andreas 7.5' Q.); 0 387 Comment
  SEINET13276823 Image available Eriophyllum lanatum var. achilleoides George K. Helmkamp, Mary Alice Barnes 2013-1 20620 Calaveras Northern Sierra Nevada Mountains Foothills: Poloma Road at its junction with Cosgrove Creek Road, 3 miles NE (30 deg. ) of Valley Springs (Valley Springs 7.5' Q.) 279 Comment
  SEINET3271575 Image available Lepidium virginicum George K. Helmkamp, E. A. Helmkamp 2009-7-30 15318 Calaveras Sierra Nevada Mountains; Ottawa Drive, 0.1 mile south of its junction with CA-4, 1.2 miles northeast of Dorrington 1471 Comment
  SEINET3439306 Image available Vulpia myuros var. myuros George K. Helmkamp, E. A. Helmkamp 2012-1 18985 Calaveras Northern Sierra Nevada mountain foothills: at a crossing of ... 351 Comment
  SEINET3440055 Image available Briza minor George K. Helmkamp, E. A. Helmkamp 2012-4-4 18698 Calaveras Northern San Joaquin Valley: along CA-26, 0.1 mi W of junction with Milton Road, between Linden and Valley Springs 67 Comment
  SEINET3815557 Image available Elymus glaucus George K. Helmkamp, E. A. Helmkamp 2012-5-15 18965 Calaveras Northern Sierra Nevada Mountains Foothills: along Murray Creek Road (Murraydale Ln.), 1.4 miles E of Pope Road in San Andreas 387 Comment
  SEINET4137618 Image available Agrostis stolonifera George K. Helmkamp, E. A. Helmkamp 2011-7-12 17713 Calaveras Northern Sierra Nevada Mountains Foothills: Winton Road, 6.7 miles E of junction with CA-26 in West Point 1192 Comment
  SEINET4178516 Image available Hypericum perforatum George K. Helmkamp, E. A. Helmkamp 2010-8-3 16710 Calaveras Northern Sierra Nevada Mountains: along CA-4 across the highway from Calaveras State Park, 2.7 mi. NE of Arnold. 1448 Comment
  SEINET4178628 Image available Trifolium depauperatum George K. Helmkamp, E. A. Helmkamp 2011-3-19 17092 Calaveras East end San Joaquin Valley: along CA-26, 1.8 miles southwest of Valley Springs. 206 Comment
  SEINET4178676 Image available Erythranthe guttata George K. Helmkamp, E. A. Helmkamp 2010-1 16706 Calaveras Northern Sierra Nevada Mountains: Forest route 7N23 0.1 mile north of the junction with CA-4. 2004 Comment
  SEINET4691418  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2011-1 17106 Calaveras San Joaquin Valley: along Warren Road near Long Horn Ct., 0.4 mile north of junction with CA-26. 56 Comment
  SEINET7248292  Epilobium brachycarpum George K. Helmkamp, Amy Barnes 2013-1 22346 Calaveras Northern Sierra Nevada Mountains: SE side of White Pines Reservoir, 0.6 mile NE of Arnold. 1184 Comment
  SEINET7248294  Agrostis stolonifera George K. Helmkamp, Amy Barnes 2013-1 22349 Calaveras Northern Sierra Nevada Mountains: SE side of White Pines Reservoir, 0.6 mile NE of Arnold. 1184 Comment
  UC2044604  Sedella pentandra George K. Helmkamp 2013-3-14 20188 Calaveras San Joaquin Valley/Sierra Nevada Foothills Jenny Lind Road (County Road J14) 0.1 mile north of its junction with Kirby Road, 24 mi. NE of Stockton. (Valley Springs SW 7.5' Q.) Comment
  UC2044609  Trifolium hirtum George K. Helmkamp with E. A. Helmkamp 2011-6-17 17557 Calaveras Northern Sierra Nevada Mountains Foothills Winton Road, 3.7 miles northeast of CA-26 at West Point. (Devils Nose 7.5' Q.) Comment
  UCD123402  Triphysaria eriantha subsp. eriantha G. K. Helmkamp; E. A. Helmkamp 2007-3-17 11649 Calaveras Eastern Sacramento Valley: about 1 mile north of Burson on the road to south Comanche Reservoir. 152 Comment
  UCR173989  Brodiaea elegans George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10796 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, at crossing of the South Fork of the Mokelumne River 753 Comment
  UCR182290  Daucus carota George K. Helmkamp, E. A. Helmkamp 2006-10-8 11488 Calaveras Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 26, 0.8 mi east of Calif. Hwy 49 in the vicinity of Mokulumne Hill 488 Comment
  UCR184930  Sinapis arvensis George K. Helmkamp, E. A. Helmkamp 2007-4-26 11846 Calaveras Foothills, Northern Sierra Nevada Mountains, Chili Gulch near McSorley Ranch, along Calif. Hwy 49, 5.1 miles south of the Amador County line 370 Comment
  UCR184940  Pityrogramma triangularis var. triangularis George K. Helmkamp, E. A. Helmkamp 2007-4-26 11836 Calaveras Foothills, Northern Sierra Nevada Mountains, along Calif. Hwy 49, 1 mile west of Mokelumne Hill, 1.7 miles south of the Amador County line 370 Comment
  UCR184956  Geranium molle George K. Helmkamp, E. A. Helmkamp 2007-4-26 11854 Calaveras Northern Sierra Nevada Mountains Foothills, Mokelumne Vista, 0.4 mile south of Calif. Hwy 49 and Mokelumne Hill 442 Comment
  UCR189424  Lasthenia platycarpha George K. Helmkamp, E. A. Helmkamp 2007-3-17 11650 Calaveras Eastern Sacramento Valley, about 1 mile north of Burson on the road to south Comanche Reservoir 152 Comment
  UCR189489  Aira caryophyllea George K. Helmkamp, E. A. Helmkamp 2007-3-17 11647 Calaveras Eastern Sacramento Valley, about 1 mile north of Burson on the road to south Comanche Reservoir 152 Comment
  UCR197256  Nemophila pulchella var. gracilis George K. Helmkamp, E. A. Helmkamp 2008-4-11 13267 Calaveras Sierra Nevada Mountains Foothills, junction of Fricot City Road and Calavaritas Road, southeast of the city of San Andreas 433 Comment
  UCR197286  Lupinus albifrons var. collinus George K. Helmkamp, E. A. Helmkamp 2008-5-29 13511 Calaveras Sierra Nevada Mountains, Arnold Way Road parallel to CA-4 (Ebbetts Pass Hwy), 0.8 mile northeast of Arnold 1265 Comment
  UCR197297  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2008-5-29 13513 Calaveras Sierra Nevada Mountains, Arnold Way Road parallel to CA-4 (Ebbetts Pass Hwy), 0.8 mile northeast of Arnold 1265 Comment
  UCR197298  Ceanothus integerrimus George K. Helmkamp, E. A. Helmkamp 2008-5-29 13517 Calaveras Sierra Nevada Mountains, Arnold Way Road parallel to CA-4 (Ebbetts Pass Hwy), 0.8 mile northeast of Arnold 1265 Comment
  UCR197505  Eriophyllum confertiflorum var. confertiflorum George K. Helmkamp, E. A. Helmkamp 2008-5-8 13412 Calaveras Sierra Nevada Mountains Foothills, along CA-26, 1.7 miles northeast of Glencoe 674 Comment
  UCR197807  Equisetum telmateia subsp. braunii George K. Helmkamp, E. A. Helmkamp 2008-5-8 13421 Calaveras Sierra Nevada Mountains Foothills, Skull Flat road, 0.4 mile north of it junction with Winton Road, northeast of West Point 823 Comment
  UCR197830  Plectritis ciliosa subsp. insignis George K. Helmkamp, E. A. Helmkamp 2008-4-11 13239 Calaveras Sierra Nevada Mountains Foothills, along Fricot City Road, 1.8 miles northwest of CA-49, c. 4.6 miles (air) SE of San Andreas 387 Comment
  UCR198480  Galium aparine George K. Helmkamp, E. A. Helmkamp 2008-3-18 13178 Calaveras Sierra Nevada Mountains Foothills, Jesus Maria Road, 0.5 mile south of CA-26, about 1.7 miles southeast of Mokelumne Hill 427 Comment
  UCR198533  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2008-3-22 13209 Calaveras San Joaquin Valley /Sierra Nevada Mountains Foothills, along CA-26 (joint with CA-12) 10.6 miles southwest of its junction with CA-49 213 Comment
  UCR207451  Adenocaulon bicolor George K. Helmkamp, E. A. Helmkamp 2009-7-30 15315 Calaveras Sierra Nevada Mountains, Ottawa Drive, 0.1 mile south of its junction with CA-4, 1.2 miles northeast of Dorrington 1471 Comment
  UCR215775  Epilobium ciliatum subsp. ciliatum George K. Helmkamp, E. A. Helmkamp 2009-7-30 15348 Calaveras Northern Sierra Nevada Mountains, Forestry Route 6N45, just north of its junction with CA-44, 15.1 miles northeast of Arnold 2018 Comment
  UCR217834  Medicago polymorpha George K. Helmkamp, Amy Barnes 2010-5-7 15966 A Calaveras Sierra Nevada Mountains Foothills, along CA-49, 0.4 mile north of its junction with CA-12, vicinity of San Andreas 233 Comment
  UCR218160  Geranium molle George K. Helmkamp, Amy Barnes 2010-5-7 15991 Calaveras Sierra Nevada Mountains Foothills, Michel Road, 0.1 mile east of its junction with Mountain Ranch Road. 5.2 mi. east (92.5 deg. ) of San Andreas 512 Comment
  UCR230127  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2011-5-21 17357 Calaveras Northern Sierra Nevada Mountains Foothills, Jesus Maria Road, 3.8 miles southeast of its junction with CA-26, 3.85 air mi. SE (105 deg. ) of Mokelumne Hill 427 Comment
  UCR230128  Dudleya cymosa subsp. cymosa George K. Helmkamp, E. A. Helmkamp 2011-5-21 17358 Calaveras Northern Sierra Nevada Mountains Foothills, Jesus Maria Road, 3.8 miles southeast of its junction with CA-26, 3.85 air mi. SE (105 deg. ) of Mokelumne Hill 427 Comment
  UCR231101  Adenocaulon bicolor George K. Helmkamp, E. A. Helmkamp 2011-9-16 18275 Calaveras Northern Sierra Nevada Mountains Foothills, Bald Mountain Road, 1.5 miles SW of Hunter Creek crossing, 7.3 miles NE of the junction of Blue Mountain Rd and Rail Road Flat Rd 1037 Comment
  UCR231107  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2011-9-16 18278 Calaveras Northern Sierra Nevada Mountains Foothills, Bald Mountain Road, 1.5 miles SW of Hunter Creek crossing, 7.3 miles NE of the junction of Blue Mountain Rd and Rail Road Flat Rd 1037 Comment
  UCR231108  Gnaphalium canescens subsp. beneolens George K. Helmkamp, E. A. Helmkamp 2011-9-16 18280 Calaveras Northern Sierra Nevada Mountains Foothills, Bald Mountain Road, 1.5 miles SW of Hunter Creek crossing, 7.3 miles NE of the junction of Blue Mountain Rd and Rail Road Flat Rd 1037 Comment
  UCR231877  Baccharis pilularis George K. Helmkamp, E. A. Helmkamp 2010-10-6 17014 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26 (Stephen P. Teale Hwy) at the crossing of North Fork Mokelumne River 802 Comment
  UCR232163  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2010-8-3 16695 Calaveras Northern Sierra Nevada Mountains, along CA-4, 0.8 mile southwest of the junction with Forest Route 7N23/ Black Creek Rd., NE of Dorrington 1854 Comment
  UCR232195  Trifolium depauperatum var. depauperatum George K. Helmkamp, E. A. Helmkamp 2011-3-29 17092 Calaveras East end San Joaquin Valley, along CA-26, 1.8 miles southwest of Valley Springs 206 Comment
  UCR232261  Ceanothus integerrimus George K. Helmkamp, E. A. Helmkamp 2010-8-3 16682 Calaveras Northern Sierra Nevada Mountains, along CA-4 at the Arnold Byway, about 0.3 mile northeast of Arnold 1244 Comment
  UCR233145B  Juncus bufonius var. bufonius George K. Helmkamp, E. A. Helmkamp 2011-7-12 17719 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 Comment
  UCR233164B  Epilobium densiflorum George K. Helmkamp, E. A. Helmkamp 2011-7-12 17700 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 Comment
  UCR233373  Gnaphalium palustre George K. Helmkamp, E. A. Helmkamp 2011-9-16 18284 Calaveras Northern Sierra Nevada Mountains Foothills, Bald Mountain Road, at the south side of the bridge over Hunter Creek, 8.8 miles northeast of the junction of Blue Mountain Road and Rail Road Flat Road 1034 Comment
  UCR235419  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2012-5-15 18969 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 Comment
  UCR235453  Linanthus bicolor George K. Helmkamp, E. A. Helmkamp 2012-5-15 18988 Calaveras Northern Sierra Nevada Mountains Foothills, at a crossing of Murray Creek along Murray Creek Road; 1.8 miles east of Pope Road in San Andreas 351 Comment
  UCR235492  Festuca myuros var. myuros George K. Helmkamp, E. A. Helmkamp 2012-5-15 18985 Calaveras Northern Sierra Nevada Mountains Foothills, at a crossing of Murray Creek along Murray Creek Road; 1.8 miles east of Pope Road in San Andreas 351 Comment
  UCR235501  Oxalis laxa George K. Helmkamp, E. A. Helmkamp 2012-5-15 18990 Calaveras Northern Sierra Nevada Mountains Foothills, at a crossing of Murray Creek along Murray Creek Road; 1.8 miles east of Pope Road in San Andreas 351 Comment
  UCR235507  Luzula comosa George K. Helmkamp, E. A. Helmkamp 2012-5-15 18964 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 Comment
  UCR235508  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2012-5-15 18963 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 Comment
  UCR238419  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2012-4-4 18711 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238423  Spergularia bocconi George K. Helmkamp, E. A. Helmkamp 2012-4-4 18682 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238453  Blennosperma nanum var. nanum George K. Helmkamp, E. A. Helmkamp 2012-4-4 18689 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR240761  Erigeron canadensis George K. Helmkamp, E. A. Helmkamp 2012-9-1 19742 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26 (West Point-Pioneer Rd.) on the south side of the North Fork Mokelumne River 584 Comment
  UCR241322  Kickxia spuria George K. Helmkamp, E. A. Helmkamp 2012-9-21 19889 Calaveras Eastern San Joaquin Valley, Jenny Lind Road (Co. Rd J14), 0.2 mile south of its junction with CA-26, WSW of Rancho Calaveras 99 Comment
  UCR241339  Echinochloa colona George K. Helmkamp, E. A. Helmkamp 2012-9-21 19891 Calaveras Eastern San Joaquin Valley, Jenny Lind Road (Co. Rd J14), 0.2 mile south of its junction with CA-26, WSW of Rancho Calaveras 99 Comment
  UCR241349  Calycadenia multiglandulosa George K. Helmkamp, E. A. Helmkamp 2012-9-20 19871 Calaveras Northern Sierra Nevada Mountains Foothills, along Hwy CA-26, 6.2 miles NE of its junction with CA-49 at Mokelumne Hill 550 Comment
  UCR242817  Clarkia biloba subsp. biloba George K. Helmkamp, E. A. Helmkamp 2011-6-17 17585 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26, 0.1 mile south of the Amador County line at the bridge over the North Fork Mokelumne River, 1.77 mi. SE (112 deg. ) of Pioneer 652 Comment
  UCR245727  Sericocarpus oregonensis George K. Helmkamp, Amy Barnes 2013-9-24 22376 Calaveras Northern Sierra Nevada Mountains, north end of White Pine Reservoir, 0.6 mile north of Arnold 1186 Comment
  UCR245728  Mentha spicata var. spicata George K. Helmkamp, Amy Barnes 2013-9-24 22377 Calaveras Northern Sierra Nevada Mountains, north end of White Pine Reservoir, 0.6 mile north of Arnold 1186 Comment
  UCR245854  Tragopogon dubius George K. Helmkamp, Amy Barnes 2013-9-24 22373 Calaveras Northern Sierra Nevada Mountains, north end of White Pine Reservoir, 0.6 mile north of Arnold 1186 Comment
  UCR252537  Typha angustifolia George K. Helmkamp, Amy Barnes 2013-9-24 22374 Calaveras Northern Sierra Nevada Mountains, north end of White Pine Reservoir, 0.6 mile north of Arnold 1186 Comment
  UCR252538  Lupinus formosus var. formosus George K. Helmkamp, Amy Barnes 2013-9-24 22355 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR253557  Polygonum punctatum George K. Helmkamp, Amy Barnes 2013-9-23 22298 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR253558  Epilobium ciliatum George K. Helmkamp, Amy Barnes 2013-9-23 22297 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR256975  Hordeum vulgare George K. Helmkamp 2014-5-17 22888 Calaveras Sierra Nevada Mountains Foothills, along CA-26, 3.8 miles northeast of CA-49 at Mokelumne Hill 439 Comment
  UCR257177  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2013-11-9 22478 Calaveras Sierra Nevada Mountains Foothills, Gwin Mine Road, 1.3 rd. miles north of Paloma Rd. at Paloma, 3.3 miles SW (242 deg. air) of Mokelumne Hill 384 Comment
  UCR257178  Baccharis pilularis George K. Helmkamp, E. A. Helmkamp 2013-11-9 22477 Calaveras Sierra Nevada Mountains Foothills, Gwin Mine Road, 1.3 rd. miles north of Paloma Rd. at Paloma, 3.3 miles SW (242 deg. air) of Mokelumne Hill 384 Comment
  UCR257182  Helenium puberulum George K. Helmkamp, E. A. Helmkamp 2013-11-15 22485 Calaveras Sierra Nevada Mountains Foothills, Gwin Mine Road, 1.3 rd. miles north of Paloma Rd. at Paloma, 3.3 miles SW (242 deg. air) of Mokelumne Hill 384 Comment
  UCR257207  Cynosurus echinatus George K. Helmkamp 2014-5-17 22908 Calaveras Sierra Nevada Mountains Foothills, Happy Valley, just east of Mokelumne Hill, along CA-26 at the west junction with Jesus Maria Road 524 Comment
  UCR257208  Mimulus guttatus George K. Helmkamp 2014-5-17 22907 Calaveras Sierra Nevada Mountains Foothills, Happy Valley, just east of Mokelumne Hill, along CA-26 at the west junction with Jesus Maria Road 524 Comment
  UCR258358  Penstemon laetus subsp. laetus George K. Helmkamp 2014-5-28 22920 Calaveras Northern Sierra Nevada Mountains, along Winton Road, 6.5 miles east of CA-26 in West Point 1247 Comment
  UCR258387  Stipa nelsonii George K. Helmkamp 2014-5-28 22924 Calaveras Northern Sierra Nevada Mountains, along Winton Road (FR 7N03), 12.3 miles east of CA-26 in West Point 1640 Comment
  UCR87679  Brodiaea elegans subsp. elegans George K. Helmkamp, E. A. Helmkamp 1995-6-22 95 4 20 Calaveras Sierra Nevada Mtns, along Calif. Hwy 4, 2.5 mi NE of Arnold 1479 Comment
  UCR87970  Carex multicaulis George K. Helmkamp, E. A. Helmkamp 1995-6-22 s.n. Calaveras Sierra Nevada Mtns, along Calif. Hwy 4, 2.5 mi NE of Arnold 1479 Comment
  SEINET7249052  Allophyllum divaricatum George K. Helmkamp, Elizabeth Helmkamp 2013-1 Calaveras Comment
  CDA25631  Amaranthus blitoides G. K. Helmkamp, E. A. Helmkamp 2008-10-14 14264 Colusa Sacramento Valley; Along River Road (generally following the Sacramento River), 8.4 miles north of Colusa. Comment
  CDA36217  Centaurea solstitialis G. K. Helmkamp, E. A. Helmkamp 2009-5-2 14758 Colusa Inner North Coast Ranges; Along CA-16, 1.8 miles north of the Yolo County line. Comment
  JEPS119422  Madia exigua G. K. Helmkamp, E. A. Helmkamp 2009-5-20 14741 Colusa Central Inner Coast Ranges, along CA-16 near Bear Creek, 1.6 miles south of the junction with CA-20 Comment
  RSA746964  Medicago sativa George K. Helmkamp, E. A. Helmkamp 2008-10-14 14253 Colusa along River Road (generally following the Sacramento River), 1.1 miles north of Colusa 18 Comment
  RSA746969  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2008-10-14 14242 Colusa along River Road (generally following the Sacramento River), 1.1 miles north of Colusa 18 Comment
  RSA747233  Croton setiger George K. Helmkamp, E. A. Helmkamp 2008-10-14 14249 Colusa Sacramento Valley: along CA-20, 0.2 mile east of the Sutter County Line 9 Comment
  SBBG126065  Amsinckia lunaris G. K. Helmkamp with E. A. Helmkamp 2009-3-11 14368 Colusa St Hwy 20, 9.7 mi SW of Williams, on N side of Salt Crk 162 Comment
  SEINET3245652  Acmispon americanus var. americanus G. K. Helmkamp, E. A. Helmkamp 2008-1 14242 Colusa Sacramento Valley: along CA-20, 0.2 mile east of the Sutter County line (Meridian 7.5') 9 Comment
  SEINET3271565 Image available Aegilops triuncialis George K. Helmkamp, E. A. Helmkamp 2009-5-20 14749 Colusa Inner North Coast Ranges; along CA-16 at 'Cowboy Camp' 1.0 mile south of the junction with CA-20, adjacent to Bear Creek 332 Comment
  UCR201570  Echinochloa crus-galli George K. Helmkamp, E. A. Helmkamp 2008-10-14 14269 Colusa Sacramento Valley, along CA-20, 2 miles west of Meridian 14 Comment
  UCR205143  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2008-10-14 14248 Colusa Sacramento Valley, along CA-20, 0.2 mile east of the Sutter County line 9 Comment
  UCR205170  Quercus lobata George K. Helmkamp, E. A. Helmkamp 2008-10-14 14251 Colusa Sacramento Valley, along CA-20, 0.2 mile east of the Sutter County line 9 Comment
  UCR206351  Melica californica George K. Helmkamp, E. A. Helmkamp 2009-5-20 14742 Colusa Central Inner Coast Ranges, along CA-16 near Bear Creek, 1.6 miles south of the junction with CA-20 320 Comment
  UCR206372  Ceanothus cuneatus subsp. cuneatus George K. Helmkamp, E. A. Helmkamp 2009-3-11 14369 Colusa Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams, on the north side of Salt Creek 162 Comment
  UCR206381  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2009-5-20 14755 Colusa Inner North Coast Ranges, along CA-16, 1.8 miles north of the Yolo County line 271 Comment
  UCR206396  Hordeum murinum George K. Helmkamp, E. A. Helmkamp 2009-3-11 14371 Colusa Inner North Coast Range Foothills, along CA-20, 14.3 miles southwest of Williams 375 Comment
  UCR206694  Raphanus raphanistrum George K. Helmkamp, E. A. Helmkamp 2009-3-11 14364 Colusa Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams, on the north side of Salt Creek 162 Comment
  UCR233441  Phacelia tanacetifolia George K. Helmkamp, E. A. Helmkamp 2011-4-1 17129 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 0.4 miles southeast of Sites 93 Comment
  UCR233447  Lupinus albifrons var. collinus George K. Helmkamp, E. A. Helmkamp 2011-4-1 17121 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 1.8 miles southeast of Sites 77 Comment
  UCR233448  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 2011-4-1 17122 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 1.8 miles southeast of Sites 77 Comment
  CAS-BOT-BC226937  Sericocarpus oregonensis George K. Helmkamp; E. A. Helmkamp 2010-9-23 16967 El Dorado Northern Sierra Nevada Mountains Foothills: west end of Union Valley Reservoir at boat launching area, along Forest Route 31 1491 Comment
  CAS-BOT-BC228598  Dysphania botrys George K. Helmkamp; E. A. Helmkamp 2010-9-23 16974 El Dorado Northern Sierra Nevada Mountains: Round Tent Canyon Road, 0.56 miles west of its junction with Peavine Ridge Road at Forest Route 31 1521 Comment
  CAS-BOT-BC263232  Galium porrigens G. K. Helmkamp; E. A. Helmkamp 2008-4-25 13309 El Dorado Sierra Nevada Mountains Foothills: junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  CAS-BOT-BC434186  Galium triflorum George K. Helmkamp; Elizabeth Helmkamp 2013-6-15 20856 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz. 1364 Comment
  CAS-BOT-BC518741  Eriogonum roseum George K. Helmkamp; E. A. Helmkamp 2012-9-5 19751 El Dorado Northern Sierra Nevada Mountain Foothills: along Lotus Road, 1.6 mi S of jct with CA-49, 1.45 mi SW (238 deg. ) of Coloma 248 Comment
  CAS-BOT-BC520337  Stachys rigida George K. Helmkamp; E. A. Helmkamp 2012-9-17 19859 El Dorado Northern Sierra Nevada Mountains Foothills: N of Pollock Pines, along Forebay Rd at South Fork American River 563 Comment
  CAS-BOT-BC523882  Symphyotrichum spathulatum var. spathulatum George K. Helmkamp; E. A. Helmkamp 2011-9-13 18246 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail, 21.4 rd. mi SE of Jenkinson's Lake, between Silver Fork Road and Hwy 88, 1.1 mi NW (331 deg. ) of Alder Hill 2269 Comment
  CDA35806  Geranium bicknellii G. K. Helmkamp, E. A. Helmkamp 2007-5-1 11917 El Dorado Foothills Northern Sierra Nevada Mountains; Along Highway CA-49, 6.1 miles northwest of Placerville. Comment
  HSC104183  Bidens frondosa G. K. Helmkamp, E. A. Helmkamp 2012-9-17 19863 El Dorado Northern Sierra Nevada Mountains Foothills: north of Pollock Pines, along Forebay Rd. at South Fork American River 564 Comment
  JEPS119425  Madia gracilis G. K. Helmkamp, E. A. Helmkamp 2011-7-2 17627 El Dorado Northern Sierra Nevada Mountains Foothills, Forni Road at Weber Creek crossing, 1.3 miles south of its Placerville junction with US-50 Comment
  RSA0011960  Gilia leptalea subsp. bicolor George K. Helmkamp, E. A. Helmkamp 2011-9-13 18250 El Dorado Mormon Emigrant Trail, 22.6 miles southeast of Jenkinson's Lake, between Silver Fork Road and Hwy 88, 0.2 mi. NNE (23 deg.) of Alder Hill. 2274 Comment
  RSA0012140  Asclepias cordifolia George K. Helmkamp, E. Helmkamp 2011-7-7 17641 El Dorado Park Creek Road, 0.4 mile east of its junction with Old Sly Park Road, southeast of Pollock Pines, 0.7 mi. SSW (191 deg ) of Fresh Pond 1250 Comment
  RSA0012159  Mimulus viscidus George K. Helmkamp, E. A. Helmkamp 2011-7-7 17667 El Dorado Capps Crossing Road, 5.2 miles south of its junction with Mormon Emigrant Trail 1409 Comment
  RSA0013414  Viola purpurea subsp. quercetorum George K. Helmkamp, E. A. Helmkamp 2012-5-22 19058 El Dorado Forest Service Road 31 (Peavine Ridge Road), 1.3 miles wet of its junction with Ice House Canyon Road. 1582 Comment
  RSA0043185  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2007-4-30 11885 El Dorado hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  RSA0045138  Horkelia tridentata subsp. tridentata George K. Helmkamp, E. A. Helmkamp 2012-7-6 19343 El Dorado Ice House Road, 0.4 mile north of Ice House village, 10.9 miles north of the junction with US-50. 1707 Comment
  RSA0045139  Phacelia quickii George K. Helmkamp, E. A. Helmkamp 2012-7-6 19341 El Dorado Ice House Road, 0.4 mile north of Ice House village, 10.9 miles north of the junction with US-50. 1707 Comment
  RSA0045141  Cryptantha simulans George K. Helmkamp, E. A. Helmkamp 2012-7-6 19321 El Dorado Ice House Road, 0.2 mile north of Ice House community, 10.7 miles north of US-50. 1683 Comment
  RSA0045231  Catalpa speciosa George K. Helmkamp, E. A. Helmkamp 2006-9-29 11456 El Dorado Pleasant Valley Rd 0.1 mile east of Patterson Dr. 534 Comment
  RSA0049801  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2012-7-6 19351 El Dorado Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50. 2078 Comment
  RSA0049894  Castilleja tenuis George K. Helmkamp, E. A. Helmkamp 2012-7-6 19359 El Dorado Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50. 2078 Comment
  RSA0064546  Lupinus latifolius subsp. latifolius George K. Helmkamp, Elizabeth A. Helmkamp 2013-7-31 22062 El Dorado Junction of Ice House Road and Forestry Route 13N21, 0.9 mile south of the northern junction of Ice House Road and Wentworth Springs Road. 1701 Comment
  RSA0081166  Amaranthus albus George K. Helmkamp, E. A. Helmkamp 2006-9-29 11452 El Dorado Salmon Falls Rd just west of Calif. Hwy 49 and 4 miles south of Cool. 351 Comment
  RSA0107823  Gilia sinistra subsp. sinistra George K. Helmkamp, E. A. Helmkamp 2005-8-9 9799 El Dorado Northern Sierra Nevada Foothills: El Dorado National Forest; WSW of Lake Tahoe; 7.4 miles N of Union Reservoir along Ice House Road at the junction of Cheese Camp Road. 1765 Comment
  RSA714087  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2005-8-9 9792 El Dorado Northern Sierra Nevada Foothills: El Dorado National Forest; WSW o Lake Tahoe; 7.4 miles N. of Union Reservoir along Ice House Road at the junction of Cheese Camp Road. 1765 Comment
  RSA714088  Lotus unifoliolatus George K. Helmkamp, E. A. Helmkamp 2005-7-11 9675 El Dorado Northern Sierra Nevada Foothills: Cameron Park (E. of Sacramento, along US Highway 50); corner of Santos Street and Santos Court Road 370 Comment
  RSA714096  Madia gracilis subsp. gracilis George K. Helmkamp, E. A. Helmkamp 2005-8-9 9775 El Dorado Northern Sierra Nevada Foothills: WSW of Lake Tahoe; NE of Union Valley Reservoir along Ice House Road 1576 Comment
  RSA715283  Lotus oblongifolius George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10769 El Dorado About 1.3 miles north of Hwy US-50 on Wrights Lake Road. 1677 Comment
  RSA715292  Adenocaulon bicolor George K. Helmkamp, E. A. Helmkamp 2005-8-9 9781 El Dorado Northern Sierra Nevada Foothills: WSW of Lake Tahoe; NE of Union Valley Reservoir along Ice House Road 1576 Comment
  RSA747035  Arctostaphylos viscida subsp. viscida George K. Helmkamp, E. A. Helmkamp 2007-3-5 11596 El Dorado Granite Canyon, along Lotus Road; about 3 miles south of Calif. Hwy 49 372 Comment
  RSA747385  Lonicera conjugialis George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13915 El Dorado Northern Sierra Nevada Mountains: Wrights Lake Road, 3.4 miles north of its junction with CA Hwy 50. 2043 Comment
  RSA748556  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2007-9-26 13015 El Dorado Bonetti Road, 1.1 miles south of its junction with Mormon Emigrant Trail, just east of Jenkinson Lake 1189 Comment
  RSA750451  Muhlenbergia jonesii George K. Helmkamp, E. A. Helmkamp 2008-8-1 13956 El Dorado Forestry Route 42 at Silver Creek, 0.2 mile west of the junction with Wright's Lake Road 2021 Comment
  RSA751088  Streptanthus tortuosus George K. Helmkamp, E. A. Helmkamp 2008-7-11 13760 El Dorado Tragedy Spring Road, 8.0 miles southwest of Kirkwood and 0.1 mile north of its junction with CA-88 2421 Comment
  RSA751266  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2008-8-21 14039 El Dorado Along CA-49, 0.3 mile north of the junction with Pleasant Valley Road in Diamond Springs 537 Comment
  RSA755555  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2009-8-19 15491 El Dorado Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  RSA755828  Alchemilla occidentalis George K. Helmkamp, E. A. Helmkamp 2009-4-4 14502 El Dorado Sand Ridge Road, 2.3 miles west of Bucks Bar Road 654 Comment
  RSA756911  Polygonum phytolaccifolium George K. Helmkamp, E. A. Helmkamp 2009-7-22 15243 El Dorado Wrights Lake Road, 2.7 miles north of its junction with US-50, c. 0.25 mi. due S of Chimney Flat 2000 Comment
  RSA756920  Triteleia ixioides subsp. scabra George K. Helmkamp, E. A. Helmkamp 2009-5-14 14690 El Dorado hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  RSA757542  Senecio triangularis George K. Helmkamp, Amy Barnes 2009-7-8 15163 El Dorado Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House. 1654 Comment
  RSA781314  Mimulus torreyi George K. Helmkamp, E. A. Helmkamp 2009-7-22 15254 El Dorado Wrights Lake Road, 2.7 miles north of its junction with US-50, c. 0.25 mi. due S of Chimney Flat 2000 Comment
  RSA781944  Claytonia parviflora subsp. parviflora George K. Helmkamp, Mary Alice Barnes, Mary Jane Ganive 2010-6-13 16269 El Dorado along Forebay Road, just south of Forebay Bridge over the South Fork American River 588 Comment
  RSA781949  Xanthium spinosum George K. Helmkamp, E. A. Helmkamp 2009-10-20 15692 El Dorado Sand Ridge Road 0.9 mile east of CA-49, at the junction with Morales Ranch Road, 6.8 air mi. SSW (188 deg,) of Diamond Springs 381 Comment
  RSA781952  Juglans hindsii George K. Helmkamp, E. A. Helmkamp 2009-8-14 15477 El Dorado Bucks Bar Road 4.4 miles south of Pleasant Valley Road, at junction with Sand Ridge Road 628 Comment
  RSA789516  Mimulus jepsonii George K. Helmkamp, E. A. Helmkamp 2012-5-22 19063 El Dorado Forest Service Road 31 (Peavine Ridge Road), 1.3 miles wet of its junction with Ice House Canyon Road. 1582 Comment
  RSA792590  Lessingia leptoclada George K. Helmkamp, William Barnes 2010-9-4 16949 El Dorado Mormon Emigrant Trail at the junction with Bonetti Road 1765 Comment
  RSA792600  Lotus oblongifolius George K. Helmkamp, William Barnes 2010-9-4 16922 El Dorado Mehrten Spring Rd and continuing on Cat Creek Rd., 4.7 miles northwest of CA-88; Middle Fork of Cosumnes River 1620 Comment
  RSA795074  Sporobolus indicus George K. Helmkamp, E. A. Helmkamp 2011-9-22 18302 El Dorado Lake Oaks Mobile Home Park, Diamond Springs; northwest edge of Patterson Lake 521 Comment
  SBBG123125  Clematis ligusticifolia G. K. Helmkamp with E. A. Helmkamp 2007-7-23 12591 El Dorado Traverse Crk Rd at the crossing of Traverse Crk, ca. 2 mi SE of its jct with Hwy 193 732 Comment
  SBBG129004  Leptosiphon parviflorus G. K. Helmkamp, E. A. Helmkamp 2012-4-24 18833 El Dorado Bear Crk Rd, 0.4 mi S of its jct with Meadow Brook Rd, 2.5 mi NE (66 deg) of Garden Valley 705 Comment
  SD212390  Pseudotsuga menziesii G. K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10582 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road just north of Highway US-50 1665 Comment
  SD212425  Echinochloa crus-galli G. K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9889 El Dorado Northern Sierra Nevada Foothills; Silver Fork, 2.1 miles west of Kyburz along US Highway 50. 1203 Comment
  SD212612  Lupinus fulcratus G. K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9893 El Dorado Wright's Lake Road (Forest Road 4), 2.1 miles north of US Highway 50, ca. 5-6 miles east of Kyburz. 1951 Comment
  SD234841  Symphyotrichum foliaceum var. parryi G. K. Helmkamp, E. A. Helmkamp 2007-8-4 12712 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail at Leek Spring meadow, about 2 miles NW of CA-88 (Tragedy Spring 7.5' Q) 2238 Comment
  SD234890  Phacelia hastata var. hastata G. K. Helmkamp, E. A. Helmkamp 2007-6-6 12282 El Dorado Northern Sierra Nevada Mountains: Bonetti Road, 3.2 miles south of its junction with Mormon Emigrant Trail, east of Jenkinson Lake and near Diamond Creek. 1189 Comment
  SD234977  Plantago lanceolata G. K. Helmkamp, E. A. Helmkamp 2007-9-22 12993 El Dorado Foothills, northern Sierra Nevada Mountains: along Pleasant Valley Road (Hwy CA-49) 0.8 mile sest of its junction with Missouri Flat Road in Diamond Springs (Placerville 7.5' Q) 531 Comment
  SD236192  Pseudognaphalium thermale G. K. Helmkamp, E. A. Helmkamp 2006-7-28 11031 El Dorado Northern Sierra Nevada Mtns: 2.5 miles south of Hwy US-50, besides Phillips on Sierra-at-Tahoe Rd 2226 Comment
  SD237242  Iris hartwegii subsp. hartwegii G. K. Helmkamp, E. A. Helmkamp 2008-5-15 13438 El Dorado Sierra Nevada Mountains: White Meadow Road, .1 mile west of its junction with Ice House Road, c. 1.3 miles up Ice House Road from US-50. 1054 Comment
  SD237267  Festuca microstachys G. K. Helmkamp, E. A. Helmkamp 2010-4-24 15943 El Dorado Sierra Nevada Mountains Foothills: Oak Ridge Road just east of its junction with Blend-O-Green Way, jct. is north of Green Valley Road. 390 Comment
  SD237392  Streptanthus tortuosus var. orbiculatus G. K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16577 El Dorado Northern Sierra Nevada Mountains: southeast side of Wright's Lake, 5.8 miles NE (34a^z) of Kyburz (Pyramid Peak 7.5'Q) 2085 Comment
  SD237550  Navarretia leptalea subsp. leptalea G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15267 El Dorado Sierra Nevada Mountains: Wrights Lake Road, 1.2 miles south of Wrights Lake (Pyramid Peak 7.5'Q) 2073 Comment
  SD237569  Polygonum douglasii subsp. douglasii G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15278 El Dorado Sierra Nevada Mountains: Forestry Route 42, 1.6 miles west of its junction with Wrights Lake Road (Kyburz 7.5'Q) 1851 Comment
  SD237610  Castilleja tenuis G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15274 El Dorado Sierra Nevada Mountains: Wrights Lake Road, 1.2 miles south of Wrights Lake (Pyramid Peak 7.5'Q) 2073 Comment
  SD237619  Erythranthe lewisii G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15275 El Dorado Sierra Nevada Mountains Forestry Route 42, 1.6 miles wet of its junction with Wrights Lake Road (Kyburz 7.5'Q) 1851 Comment
  SD237627  Penstemon rydbergii var. oreocharis G. K. Helmkamp, E. A. Helmkamp 2010-7-23 16620 El Dorado Sierra Nevada Mountains: Forestry Route 42, 0.2 mile west of its junction with Wright's Lqake Road and beside Silver Creek, 4 miles NE (31a^z) of Kyburz (Kyburz 7.5'Q) 2021 Comment
  SD239560  Torilis arvensis G. K. Helmkamp, E. A. Helmkamp 2008-6-5 13604 El Dorado Sierra Nevada Mountains Foothills: Forbay Road at crossing of the South Fork American River (Pollock Pines 7.5'Q) 594 Comment
  SD240956  Saponaria officinalis George K. Helmkamp, E. A. Helmkamp 2011-10-13 18414 El Dorado Northern Sierra Nevada Mountains Foothills: Forebay Road, 8.1 miles northwest of Pollock Pines, at north side of bridge over the South Fork American River (Slate Mountain 7.5'Q) 595 Comment
  SD241034  Quercus durata var. durata George K. Helmkamp, E. A. Helmkamp 2011-11-20 18465 El Dorado Northern Sierra Nevada Mountains Foothills: Salmon Falls Road at south end of bridge over the American River (Pilot Hill 7.5'Q) 160 Comment
  SD241820  Lupinus latifolius var. columbianus G. K Helmkamp, E. A. Helmkamp 2012-5-28 19078 El Dorado Northern Sierra Nevada Mountains: 1.1 milse east of the E damm of Jenkinson Lake via Mormon Emigrant Trail, then 0.6 mile SE toward Fleming Meadow (?) on an unnamed road off Bonetti Road (Sly Park 7.5'Q) 1168 Comment
  SD243039  Cyperus eragrostis George K. Helmkamp, E. A. Helmkamp 2011-10-13 18415 El Dorado Northern Sierra Nevada Mountains Foothills: Forebay Road, 8.1 miles northwest of Pollock Pines, at north side of bridge over the South Fork American River. Sandy flat beside the river and adjacent to an open, rocky bank. 595 Comment
  SD243092  Helianthella californica var. nevadensis George K. Helmkamp, E. A. Helmkamp 2010-8-20 16820 El Dorado Northern Sierra Nevada Mountains near abandoned Iron Mountain ski resort, road spur parallel to Mormon Emigrant Trail about 0.2 mile west of its junction with CA-88 (Tragedy Spring 7.5'Q) 2238 Comment
  SD243103  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2010-9-1 16892 El Dorado Northern Sierra Nevada Mountains: Mehrten Springs Road, 0.6 mile north of its junction with CA-88 (Peddler Hill 7.5'Q) 2018 Comment
  SD247295  Stipa occidentalis var. californica George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20886 El Dorado Northern Sierra Nevada Moutains: Mormon Emigrant Trail, 8.3 miles east of its junction with Hwy E-16 at Jenkinsons Lake (Old Iron Mountain 7.5'Q) 1456 Comment
  SD247421  Lupinus latifolius var. columbianus George Helmkamp, Elizabeth Helmkamp 2013-6-19 20936 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.8 mile north of Mormon Emigrant Trail and near Jim Quinn Spring, N of Carson Pass Hwy (Tragedy Spring 7.5'Q) 2116 Comment
  SD248319  Eucephalus breweri George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22083 El Dorado Northern Sierra Nevada Mountains: Mehrten Spring Road, 0.5 mile north of CA-88 / Carson Pass Hwy. Open soil opposite the wet slope. 1793 Comment
  SD255815  Keckiella lemmonii George K. Helmkamp, Amy Barnes 2014-8-11 23023 El Dorado Northern Sierra Nevada Mountains; Wentworth Springs Road at the junction with Eleven Pines Road., east of Stumpy Meadow Reservoir (Devil Peak 7.5'Q) 1481 Comment
  SD257238  Scleranthus annuus subsp. annuus George K. Helmkamp, Elizabeth Helmkamp 2013-5-2 20451 El Dorado Sierra Nevada Mountains Foothills: Happy Valley Road, 0.6 mile east of its junction with Mt. Aukum Road, 1.65 air miles NE of Somerset. 665 Comment
  SD257334  Gilia capitata subsp. mediomontana George K. Helmkamp, Elizabeth Helmkamp 2013-5-2 20452 El Dorado Sierra Nevada Mountains Foothills: Happy Valley Road, 0.6 mile east of its junction with Mt. Aukum Road, 1.65 air miles NE (72a^z) of Somerset (Camino 7.5'Q) 665 Comment
  SEINET11260118  Eriogonum nudum var. nudum George K. Helmkamp 2007-7-7 12474 El Dorado Northern Sierra Nevada Mountains: along CA-89, 0.9 mile west of Luther Pass in the Grass Lake area.; 0 2338 Comment
  SEINET11261461  Triteleia ixioides subsp. ixioides George Helmkamp, Amy Barnes 2014-5-14 22868 El Dorado Northern Sierra Nevada Mountains on the Mormon Emigrant Trail about 11.9 miles E of the junction with Sly Park Road. 6.8 air miles SW (225 degrees) of Kyburz.; 0 1808 Comment
  SEINET11262538  Gilia leptalea subsp. bicolor George Helmkamp, E. A. Helmkamp 2010-9-1 16893 El Dorado Northern Sierra Nevada Mountains. Mehrten Springs Road, .6 mile north of its junction with CA-88 (Peddler Hill 7.5' Q.).; 0 2018 Comment
  SEINET12825136  Symphyotrichum divaricatum George K. Helmkamp, E. A. Helmkamp 2009-1 14711 El Dorado Foothills, Northern Sierra Nevada Mountains. Hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville. 1587 Comment
  SEINET13276718 Image available Eucephalus breweri George K. Helmkamp, Amy Barnes 2012-1 19648 El Dorado Northern Sierra Nevada Mountains: junction of Ice House Road and entrance to campground on the south end of Loon Lake (Loon Lake 7.5' Q.) 2894 Comment
  SEINET1908709  Heuchera micrantha G. K. Helmkamp, E. A. Helmkamp 2008-1 13581 El Dorado Sierra Nevada Mountains: Forbay Road, 7.1 miles northwest of CA-50 (road junction in Pollock Pines), no-outlet road leading to the South Fork of the American River (Pollock Pines 7.5' Q). 716 Comment
  SEINET1908788  Collomia linearis G. K. Helmkamp, E. A. Helmkamp 2008-1 13650 El Dorado Northern Sierra Nevada Mountains: Cat Creek Road, 3.6 miles north of its junction with CA-88, the jct. is 4.2 miles east of Cook's Station (Peddler Hill 7.5' Q) 1753 Comment
  SEINET2443019  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2010-5-17 16050 El Dorado Sierra Nevada Mountains Foothills. Pine Hill Road at the junction with Bertana Court; southeast edge of State Ecological Preserve.; 0 459 Comment
  SEINET2445059  Aira caryophyllea George K. Helmkamp, E. A. Helmkamp 2010-5-17 16062 El Dorado Sierra Nevada Mountains Foothills. Pine Hill Road, 0.8 mi above the junction with Bertana Court; edge of Pine Hill Ecological Reserve (Shingle Springs 7.5').; 0 610 Comment
  SEINET3245886  Lessingia leptoclada G. K. Helmkamp, E. A. Helmkamp 2007-1 12948 El Dorado Northern Sierra Nevada Mountains: Ice House Road 4.3 miles north of its junction with US-50. 1393 Comment
  SEINET3245887  Ericameria arborescens G. K. Helmkamp, E. A. Helmkamp 2007-1 12947 El Dorado Northern Sierra Nevada Mountains: Ice House Road 4.3 miles north of its junction with US-50. 1393 Comment
  SEINET3246133  Arabidopsis thaliana G. K. Helmkamp, E. A. Helmkamp 2007-1 11868 El Dorado Foothills, Northern Sierra Nevada Mountains: junction of Ice House Road, about 2 miles northwest of US-50 1029 Comment
  SEINET3271589 Image available Festuca George K. Helmkamp, Amy Barnes 2009-7-8 15128 El Dorado Sierra Nevada Mountains; Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  SEINET3285074 Image available Panicum capillare George K. Helmkamp, E. A. Helmkamp 2009-5-24 14798 El Dorado Sierra Nevada Mountains Foothills; Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road. 640 Comment
  SEINET3287494 Image available Polypogon monspeliensis George K. Helmkamp, E. A. Helmkamp 2009-6-25 15048 El Dorado Sierra Nevada Mountains Foothills; Forbay Road at South Fork American River, 7.6 miles north of junction with Pony Express Trail in Pollock Pines. 579 Comment
  SEINET3817927 Image available Agrostis variabilis George K. Helmkamp, E. A. Helmkamp 2010-9-23 16958 El Dorado Northern Sierra Nevada Foothills, Forest Route 31, 3.4 miles north of its junction with Peavine Ridge Road and Round Tent Canyon Road (Riverton 7.5' Q. 1463 Comment
  SEINET3828494  Ericameria arborescens George K. Helmkamp, E. A. Helmkamp 2010-1 16985 El Dorado Northern Sierra Nevada Mountains Foothills: Ice House Road, 1.2 miles south of its junction with Peavine Road, 0.9 mi (air) N of I-50 (Riverton) 1448 Comment
  SEINET3860454  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2010-7-23 16610 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road at the entrance to a camping area, 0.2 mile west of the lake, 5.5 miles NE of Kyburz.; 0 2114 Comment
  SEINET4142469 Image available Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2012-5-3 18906 El Dorado Northern Sierra Nevada Mountain Foothills: unnamed road leading to power plant, 0.3 mi. E of South Fork American River bridge 613 Comment
  SEINET4142652 Image available Penstemon laetus subsp. laetus George K. Helmkamp, E. A. Helmkamp 2011-7-7 17629 El Dorado Northern Sierra Nevada Mountains: Park Creek Road, 0.4 miles E of junction with Sly Park Road, 1.4 mi. SE of Pollock Pines 1289 Comment
  SEINET4560833  Symphoricarpos rotundifolius var. rotundifolius George K. Helmkamp, E. A. Helmkamp 2010-1 16897 El Dorado Northern Sierra Nevada Mountains: Mehrten Springs Road, 0.6 mile north of its junction with CA-88. 2018 Comment
  SEINET4691385  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2010-1 16812 El Dorado Northern Sierra Nevada Mountains: Foster Meadow Road 0.6 mile west of Mormon Emigrant Trail in the Leek Spring area. 2232 Comment
  SEINET4691684  Madia exigua George K. Helmkamp, E. A. Helmkamp 2011-1 17412 El Dorado Northern Sierra Nevada Mountains Foothills: N edge of Placerville, west end of Mariposite Lane, above junction with Bedford Ave. 637 Comment
  SEINET7249083  Horkelia tridentata subsp. tridentata George K. Helmkamp, E. A. Helmkamp 2012-1 19343 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 0.4 mile north of Ice House Village, 10.9 miles north of the junction with US-50. 1707 Comment
  SEINET8465034 Image available Juncus macrandrus George K. Helmkamp, E. A. Helmkamp 2008-8-1 13954 El Dorado Northern Sierra Nevada Mountains: Dark Lake 0.4 mile northwest of the entrance to Wright's Lake along Wright's Lake Road. 2148 Comment
  SEINET9262062  Solidago altissima George K. Helmkamp, Elizabeth Helmkamp 2013-1 22045 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 3.1 miles north of Ice House Resort, 0.18 miles north of Jones Fork Power House Rd., 1.2 miles NW of Ice House Reservoir (kyburz 7.5 Q) 1536 Comment
  SEINET9346494  Streptanthus tortuosus var. orbiculatus G. Helmkamp, Kerchner, Ann 2010-7-19 16577 El Dorado Northern Sierra Nevada Mountains Comment
  SEINET959166  Plantago lanceolata G. K. Helmkamp, E. A. Helmkamp 2005-1 9700 El Dorado Northern Sierra Nevada Foothills: 30 mi Sw of Lake Tahoe; 1 mi E of Jenkinson Lake along Mormon Emigrant Road (County Highway 5) (Sly Park7.5' Q.) 1219 Comment
  SEINET959167  Polygonum argyrocoleon G. K. Helmkamp, E. A. Helmkamp 2005-1 9697 El Dorado Northern Sierra Nevada Foothills: 30 mi SW of Lake Tahoe; 1 mile E of Jenkinson Lake along Mormon Emigrant Road (County Highway 5)(Sly Park 7.5' Q) 1219 Comment
  SEINET998814  Euphorbia nutans G. K. Helmkamp, E. A. Helmkamp 2006-1 11532 El Dorado Northern Sierra Nevada Mountains Foothills: Diamond Springs; village along Hwy CA-49 south of Placerville (Placerville 7.5' Q) 539 Comment
  UC1950982  Lagophylla glandulosa G. K. Helmkamp, E. A. Helmkamp 2006-9-29 11447 El Dorado Northern Sierra Nevada Mountains Foothills: Salmon Falls Rd just west of CA-49 and 4 miles south of Cool (Pilot Hill 7.5' Q. Comment
  UC2044612  Castilleja lacera George K. Helmkamp with E. A. Helmkamp 2011-6-1 17409 El Dorado Northern Sierra Nevada Mountains Foothills north end of Placerville; Bear Rock Road just east of its junction with Bedford Ave. (Placerville 7.5' Q.) Comment
  UCD100386  Eriogonum marifolium G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10904 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 6.1 miles north of Hwy US-50 at the junction with the road from Ice House Reservoir. 2030 Comment
  UCD102809  Micranthes californica G. K. Helmkamp; Elizabeth Helmkamp 2006-3-26 10116 El Dorado Northern Sierra Nevada Foothills; ENE of Sacramento, Rock Creek Road at Jaybird Creek, 5.1 mi E of CA Highway 193 (generally ENE of Chili Bar). 590 Comment
  UCD103823  Acmispon americanus var. americanus G. K. Helmkamp; E. A. Helmkamp 2006-7-31 11098 El Dorado Northern Sierra Nevada Mountains. Junction of Wright's Lake Road (Forestry Route 4) and the road from Ice House Reservoir. 2018 Comment
  UCD105366  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-9-19 12983 El Dorado Northern Sierra Nevada Mountains: along Greenstone Road just south of its junction with US-50 (east of Shingle Springs). 427 Comment
  UCD105841  Lupinus adsurgens G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10849 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz. 2049 Comment
  UCD106169  Navarretia leptalea subsp. bicolor G. K. Helmkamp; E. A. Helmkamp 2007-6-20 12400 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail just before its junction with Hwy CA-88. 2265 Comment
  UCD108569  Lupinus lepidus var. sellulus G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10878 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 6.1 miles north of Hwy US-50; at the junction with the road from Ice House Reservoir. 2030 Comment
  UCD113155  Drymocallis glandulosa var. reflexa G. K. Helmkamp 2006-7-12 10948 El Dorado Northern Sierra Nevada Mtns: Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges. 1960 Comment
  UCD113316  Heteromeles arbutifolia G. K. Helmkamp; E. A. Helmkamp 2006-12-7 11583 El Dorado Northern Sierra Nevada Mountains: Rock Creek Road, 1.2 mi. east of CA-193, northeast of the South Fork of American River at Chili Bar. 399 Comment
  UCD113473  Horkelia fusca var. parviflora G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10895 El Dorado Northern Sierra Nevada Mtns: Wright's Lake Road, 6.1 miles north of Hwy US-50; at the junction with the road from Ice House Reservoir. 2030 Comment
  UCD113486  Horkelia fusca var. parviflora G. K. Helmkamp; E. A. Helmkamp 2007-8-9 12715 El Dorado Northern Sierra Nevada Mtns: Wright's Lake; south side of the lake at the entrance to the campground. 2131 Comment
  UCD114133  Capsella bursa-pastoris G. K. Helmkamp; E. A. Helmkamp 2007-3-22 11666 El Dorado Northern Sierra Nevada Mountains; Bucks Bar Road, 4.4 miles south of Pleasant Valley Road, at junction of Sand Ridge Road. 628 Comment
  UCD118094  Collomia linearis G. K. Helmkamp 2007-7-7 12466 El Dorado Northern Sierra Nevada Mountains: Along CA-89, 0.9 mile W of Luther Pass in the Grass Lake area. 712 Comment
  UCD118235  Navarretia squarrosa G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12588 El Dorado Northern Sierra Nevada Mountains: Traverse Creek Road at the crossing of Traverse Creek; about 2 miles southeast of its junction with CA-193. 732 Comment
  UCD118353  Ipomopsis aggregata subsp. aggregata G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10847 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 4.1 miles north of Highway US-50, northeast of Kyburz. 2049 Comment
  UCD118616  Leptosiphon bicolor G. K. Helmkamp; E. A. Helmkamp 2007-4-20 11771 El Dorado Foothills, Northern Sierra Nevada Mountains junction of Uhlenkamp Road and Pine Hill Road, north of Grass Valley Road and northwest of Placerville. 401 Comment
  UCD127881  Perideridia lemmonii G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11002 El Dorado Northern Sierra Nevada Mountains: Echo Summit along Hwy US-50; at entrance to the road maintenance station. 2245 Comment
  UCD128046  Sanicula tuberosa G. K. Helmkamp; E. A. Helmkamp 2007-6-6 12266 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail, 8.3 miles east of its junction with Sly Park Road. 1616 Comment
  UCD128308  Achillea millefolium G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11021 El Dorado Northern Sierra Nevada Mountains, North Truckee River Road, 1.4 miles north of CA-50 and ca. 6 miles south of Lake Tahoe. 2009 Comment
  UCD128684  Ambrosia artemisiifolia G. K. Helmkamp; E. A. Helmkamp 2007-9-2 12878 El Dorado Northern Sierra Nevada Mountains: Grizzly Flat Road 5.2 miles ESE of Somerset, just west of Coles Station. 957 Comment
  UCD130276  Chaenactis douglasii var. douglasii G. K. Helmkamp; E. A. Helmkamp 2005-7-31 9749 El Dorado Northern Sierra Nevada: 20 mi. WSW of Lake Tahoe; Ice House Road, N of CA Highway 50 and 1.5 mi. S of junction with Ice House Reservoir. Comment
  UCD132275  Eucephalus breweri G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11168 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail, 21.0 miles east of its junction with Sly Park Road. 2174 Comment
  UCD133340  Hypochaeris glabra G. K. Helmkamp; E. A. Helmkamp 2007-4-20 11754 El Dorado Northern Sierra Nevada Mountains; junction of French Creek Road and Lost Creek Road, just north of Frenchtown. 366 Comment
  UCD133906  Layia fremontii G. K. Helmkamp; E. A. Helmkamp 2007-3-23 11682 El Dorado Northern Sierra Nevada Mountains: hills bordering the east end of Sacramento Valley; Bass Lake Road at the southeast end of Bass Lake. 381 Comment
  UCD134075  Lessingia leptoclada G. K. Helmkamp; E. A. Helmkamp 2007-9-11 12948 El Dorado Northern Sierra Nevada Mountains: Ice House Road 4.3 miles north of its junction with US-50. 1393 Comment
  UCD134207  Madia elegans G. K. Helmkamp; E. A. Helmkamp 2007-9-2 12877 El Dorado Northern Sierra Nevada Mountains: Grizzly Flat Road 5.2 miles ESE of Somerset, just west of Coles Station. 957 Comment
  UCD134208  Madia elegans G. K. Helmkamp; E. A. Helmkamp 2007-9-2 12884 El Dorado Northern Sierra Nevada Mountains. Grizzly Flat Road 10.4 miles ESE of Somerset. 1107 Comment
  UCD134291  Madia gracilis G. K. Helmkamp; E. A. Helmkamp 2005-7-31 9743 El Dorado Northern Sierra Nevada Foothills; 20 miles WSW of Lake Tahoe; Ice House Road, N of CA Highway 50 and 1.5 miles S of junction with Ice House Reservoir. 1637 Comment
  UCD134466  Matricaria discoidea G. K. Helmkamp; E. A. Helmkamp 2007-5-1 11920 El Dorado Northern Sierra Nevada Mountains: along Hwy CA-49. 6.1 miles northwest of Placerville. 454 Comment
  UCD136738  Taraxacum officinale G. K. Helmkamp; Elizabeth Helmkamp 2006-5-24 10538 El Dorado Northern Sierra Nevada Mountains: Along Ice House Canyon Road, 10.6 mi. S of Wentworth Springs Road (just S of the Jones fork of Silver Creek and SE of Union Valley Reservoir). 1508 Comment
  UCD137560  Plectritis ciliosa G. K. Helmkamp; E. A. Helmkamp 2006-4-27 10243 El Dorado Northern Sierra Nevada: Junction of French Creek Road and Big Canyon Road, 0.5 mile south of Frenchtown. 340 Comment
  UCD137740  Pentagramma triangularis G. K. Helmkamp; E. A. Helmkamp 2006-3-26 10111 El Dorado Northern Sierra Nevada Foothills: ENE of Sacramento; Rock Creek Road, 1.4 miles east of CA Highway 193 (generally east of Chili Bar). 428 Comment
  UCD138508  Allium campanulatum G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-19 10744 El Dorado Northern Sierra Nevada Mountains: 6.0 miles east of Ice House Road on the road to Wright's Lake. 2000 Comment
  UCD139005  Platanthera dilatata var. leucostachys G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11193 El Dorado Northern Sierra Nevada Mountains. Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road. 2250 Comment
  UCD139271  Dichelostemma volubile G. K. Helmkamp; E. A. Helmkamp 2006-5-13 10456 El Dorado Northern Sierra Nevada Mountains: Ca. 4 air miles NE of Auburn, along an unnamed road to Lake Clementine, 1.2 mi. N of Forest Hill Road. 422 Comment
  UCD140264  Carex densa G. K. Helmkamp; E. A. Helmkamp 2007-5-1 11910 El Dorado Northern Sierra Nevada Mountains: access road to South Fork American River along CA-49, 4.4 miles northwest of Coloma. 207 Comment
  UCD141378  Juncus bufonius G. K. Helmkamp; E. A. Helmkamp 2005-7-31 9731 El Dorado Northern Sierra Nevada Foothills,: Junction of Ice Road and CA Highway 50 (E of Polloak Pines). 1006 Comment
  UCD141433  Juncus chlorocephalus G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10886 El Dorado Northern Sierra Nevada Mtns. Wright's Lake Road, 6.1 miles north of Hwy US-50; at the junction with the road from Ice House Reservoir. 2029 Comment
  UCD55746  Quercus chrysolepis G. K. Helmkamp; Elizabeth A. Helmkamp 2006-5-31 10576 El Dorado Northern Sierra Neveda Mountains, Wright's Lake Road just north of Hwy. US-50. 1664 Comment
  UCD63218  Agrostis stolonifera G. K. Helmkamp; E. A. Helmkamp 2007-9-2 12872 El Dorado Northern Sierra Nevada Mountains. Grizzly Flat Road 5.2 miles ESE of Somerset, just west of Coles Station. 957 Comment
  UCD88146  Panicum acuminatum var. acuminatum G. K. Helmkamp; E. A. Helmkamp 2007-8-21 12792 El Dorado Northern Sierra Nevada Mountains: Ice House Road at the junction to the lower campground and boat ramp of Loon Lake. 1000 Comment
  UCD88736  Paspalum dilatatum G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12564 El Dorado Foothills, northern Sierra Nevada Mountains; Rock Creek Road, 7.1 miles east of its junction with CA-193. 567 Comment
  UCD89515  Panicum capillare G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12571 El Dorado northern Sierra Nevada Mountains. Rock Creek road, 7.1 miles east of its junction with CA-193. 567 Comment
  UCD95704  Delphinium depauperatum G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10861 El Dorado Northern Sierra Nevada Mtns: Wright's Lake Road, 4.1 miles north of Hwy. US-50, northeast of Kyburz. 2049 Comment
  UCD95820  Ranunculus alismifolius var. alismellus G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10858 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 4.1 miles north of Hwy US-50. 2049 Comment
  UCD96797  Ranunculus occidentalis G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10967 El Dorado Northern Sierra Nevada Mnts: Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2104 Comment
  UCD96810  Ranunculus occidentalis G. K. Helmkamp; E. A. Helmkamp 2007-4-30 11884 El Dorado Foothills, Northern Sierra Nevada Mountains: hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  UCR170236  Gnaphalium canescens subsp. thermale George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9921 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Tie Road (Forest Road 32) 1.0 mi west of its junction with Wrights Lake Road (Forest Road 4) NNE of Kyburz 2043 Comment
  UCR170361  Agoseris grandiflora George K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9851 El Dorado Northern Sierra Nevada Foothills, E of Sacramento; Sly Park Road (County Highway E-16), c. 1 mi SW of Jenkinson Lake 1067 Comment
  UCR170367  Rumex acetosella George K. Helmkamp, Elizabeth Helmkamp 2005-8-9 9790 El Dorado Northern Sierra Nevada Foothills, El Dorado National Forest; WSW of Lake Tahoe; 7.4 miles N of Union Reservoir along Ice House Road at the junction of Cheese Camp Road 1765 Comment
  UCR170460  Echinochloa muricata George K. Helmkamp, Elizabeth Helmkamp 2005-10-29 10004 El Dorado Northern Sierra Nevada Foothills, [E of Sacramento, 3 air mi N of Placerville]; 1.9 [road] mi east of Calif. Highway 193 along Rock Creek Road 381 Comment
  UCR170811  Agrostis scabra George K. Helmkamp, E. A. Helmkamp 2005-8-9 9782 El Dorado Northern Sierra Nevada Foothills, WSW of Lake Tahoe; NE of Union Valley Reservoir along Ice House Road 1576 Comment
  UCR170966  Gayophytum eriospermum George K. Helmkamp, E. A. Helmkamp 2005-7-31 9752 El Dorado Northern Sierra Nevada Foothills, 20 mi WSW of Lake Tahoe; Ice House Road, N of Calif. Highway 50 and 1.5 mi south of junction with Ice House Reservoir 1637 Comment
  UCR171112  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 2006-3-26 10109 El Dorado Northern Sierra Nevada Foothills, ENE of Sacramento; Rock Creek Road, 1.4 mi east of Calif. Highway 193 (generally east of Chili Bar) 428 Comment
  UCR171194  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2005-7-31 9762 El Dorado Northern Sierra Nevada Foothills, 20 mi WSW of Lake Tahoe; Ice House Road, N of Calif. Highway 50 and 1.5 mi south of junction with Ice House Reservoir 1637 Comment
  UCR171200  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2006-2-22 10065 El Dorado Northern Sierra Nevada Foothills, Lake Oaks mobile home park just south of the junction of Pleasant Valley Road and Patterson Drive 521 Comment
  UCR171231  Chamaebatia foliolosa George K. Helmkamp, E. A. Helmkamp 2005-7-11 9709 El Dorado Northern Sierra Nevada Foothills, Pollock Pines area just south of US Highway 50 along County Road #5 1159 Comment
  UCR171238  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2005-7-11 9686 El Dorado Northern Sierra Nevada Foothills, 30 miles SW of Lake Tahoe; 1 mile east of Jenkinson Lake along Mormon Emigrant Road/County Highway 5 1220 Comment
  UCR171241  Allophyllum divaricatum George K. Helmkamp, E. A. Helmkamp 2005-7-11 9712 El Dorado Northern Sierra Nevada Foothills, Pollock Pines area just south of US Highway 50 along County Road #5 1159 Comment
  UCR171247  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2005-7-11 9710 El Dorado Northern Sierra Nevada Foothills, Pollock Pines area just south of US Highway 50 along County Road #5 1159 Comment
  UCR171248  Calystegia occidentalis subsp. occidentalis George K. Helmkamp, E. A. Helmkamp 2005-7-11 9711 El Dorado Northern Sierra Nevada Foothills, Pollock Pines area just south of US Highway 50 along County Road #5 1159 Comment
  UCR171535  Phacelia heterophylla subsp. virgata George K. Helmkamp, E. A. Helmkamp 2005-7-31 9728 El Dorado Northern Sierra Nevada Foothills, Junction of Ice House Road and Calif. Highway 50, east of Pollock Pines 1006 Comment
  UCR171734  Lotus nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 2005-7-31 9761 El Dorado Northern Sierra Nevada Foothills, 20 mi WSW of Lake Tahoe; Ice House Road, N of Calif. Highway 50 and 1.5 mi south of junction with Ice House Reservoir 1637 Comment
  UCR172637  Sanicula bipinnatifida George K. Helmkamp, Elizabeth Helmkamp 2006-4-20 10210 El Dorado Northern Sierra Nevada Foothills, Between N and Middle forks of Cosumnes River; Junction of Sand Ridge Road and Cutaway Lane, 2.1 mi SW of Somerset 665 Comment
  UCR172638  Arabidopsis thaliana George K. Helmkamp, Elizabeth Helmkamp 2006-4-20 10209 El Dorado Northern Sierra Nevada Foothills, Between N and Middle forks of Cosumnes River; Junction of Sand Ridge Road and Cutaway Lane, 2.1 mi SW of Somerset 665 Comment
  UCR172641  Amsinckia menziesii var. menziesii George K. Helmkamp, Elizabeth Helmkamp 2006-4-20 10206 El Dorado Northern Sierra Nevada Foothills, Between N and Middle forks of Cosumnes River; Junction of Sand Ridge Road and Cutaway Lane, 2.1 mi SW of Somerset 665 Comment
  UCR172647  Bromus hordeaceus George K. Helmkamp, Elizabeth Helmkamp 2006-4-20 10200 El Dorado Northern Sierra Nevada Foothills, Placerville; junction of Main Street and Cedar Ravine Street 585 Comment
  UCR173166  Scandix pecten-veneris George K. Helmkamp, Elizabeth Helmkamp 2006-4-25 10219 El Dorado Northern Sierra Nevada Foothills, E of Sacramento and just SW of Placerville. Forni road between US Hwy 50 and Diamond Springs, at Weber Creek 488 Comment
  UCR173285  Nemophila heterophylla George K. Helmkamp, Elizabeth Helmkamp 2006-5-18 10467 El Dorado Northern Sierra Nevada Foothills, S side of Peavine Ridge; along Meadow Canyon Road, 3.4 mi. west of its junction with Ice House Canyon Road (N of US Hwy 50 and SSE of Union Valley Reservoir) 1189 Comment
  UCR173304  Cornus nuttallii George K. Helmkamp, Elizabeth Helmkamp 2006-5-18 10476 El Dorado Northern Sierra Nevada Foothills, Spring Valley; Telephone Ridge area, NW of Riverton. Brockliss Canyon Road, about 11 mi. NW of junction with Meadowridge Road and Ice House Canyon Road (SSW of Union Valley Reservior, c. 1.4 air mi. N of US Hwy 50) 1189 Comment
  UCR173309  Sanicula bipinnatifida George K. Helmkamp, Elizabeth Helmkamp 2006-4-27 10229 A El Dorado Northern Sierra Nevada Foothills, 2.1 mi. south of Pleasant Valley Road along French Creek Road, SE of Shingle Springs 369 Comment
  UCR173312  Dactylis glomerata George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10523 El Dorado Northern Sierra Nevada Foothills, NE of Georgetown; along Bottlehill Road, 1.4 mi. N of Wentworth Springs Road 1006 Comment
  UCR173333  Ranunculus californicus George K. Helmkamp, Elizabeth Helmkamp 2006-4-27 10238 El Dorado Northern Sierra Nevada Foothills, Junction of French Creek Road and Big Canyon Road, 0.5 mi. south of Frenchtown 340 Comment
  UCR173449  Poa annua George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10548 El Dorado Northern Sierra Nevada Mountains, Junction of Ice House Canyon Road and West Meadows Road, SSW of Union Valley Reservoir, just N of US Hwy 50 1067 Comment
  UCR173477  Lotus micranthus George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10259 El Dorado Northern Sierra Nevada Foothills, Rock Creek Road, 0.9 mi. east of Calif. Hwy 193 along the S Fork of the American River 415 Comment
  UCR173478  Pellaea mucronata subsp. mucronata George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10260 El Dorado Northern Sierra Nevada Foothills, Rock Creek Road, 0.9 mi. east of Calif. Hwy 193 along the S Fork of the American River 415 Comment
  UCR173482  Cerastium fontanum subsp. vulgare George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10542 El Dorado Northern Sierra Nevada Mountains, Along Ice House Canyon Road, 10.6 mi. south of Wentworth Springs Road (just south of the Jones fork of Silver Creek and SE of Union Valley Reservoir) 1509 Comment
  UCR173493  Mimulus guttatus George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10273 El Dorado Northern Sierra Nevada Foothills, Rock Creek Road, 5.7 mi. east of Calif. Hwy 193, N of the South Fork of the American River 427 Comment
  UCR173521  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10551 El Dorado Northern Sierra Nevada Mountains, Junction of Ice House Canyon Road and West Meadows Road, SSW of Union Valley Reservoir, just N of US Hwy 50 1067 Comment
  UCR173596  Castilleja exserta subsp. exserta George K. Helmkamp, Elizabeth Helmkamp 2006-5-4 10292 El Dorado Northern Sierra Nevada Mountains Foothills, east end of Diamond Springs, 0.1 mile north of the junction of Pleasant Valley Road and Calif. Hwy 49 543 Comment
  UCR173657  Juncus bufonius var. bufonius George K. Helmkamp, Elizabeth Helmkamp 2006-5-1 10286 El Dorado Northern Sierra Nevada foothills, corner of Pleasant Valley Road and Patterson Drive; west end of Diamond Springs 537 Comment
  UCR173672  Barbarea orthoceras George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10171 El Dorado Northern Sierra Nevada Foothills, E of Sacramento, between N and Middle Forks of the Cosumnes River; Sand Ridge Road, 1.9 mi. east of Calif. Hwy 49 454 Comment
  UCR173687  Orobanche uniflora George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10562 El Dorado Northern Sierra Nevada foothills, along Hwy US-50 at Bridal Veil Falls, east of Pacific House 1002 Comment
  UCR173688  Saxifraga californica George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10561 El Dorado Northern Sierra Nevada foothills, along Hwy US-50 at Bridal Veil Falls, east of Pacific House 1002 Comment
  UCR173825  Lotus purshianus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-7 10643 El Dorado Northern Sierra Nevada foothills, hiking trail, 3.5 miles northwest of Placerville along Calif. Hwy 49 512 Comment
  UCR173913  Viola purpurea subsp. integrifolia George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10752 El Dorado Northern Sierra Nevada Mountains, 8 miles east of Ice House Road on the road to Wright's Lake 2000 Comment
  UCR173924  Clarkia unguiculata George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10618 El Dorado Northern Sierra Nevada foothills, along Rock Creek Road, 0.1 mile east of its junction with Calif. Hwy 193 387 Comment
  UCR173942  Vicia villosa George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10609 El Dorado Northern Sierra Nevada foothills, Pleasant Valley Road, 2 miles west of Pleasant Valley 787 Comment
  UCR173954  Phacelia mutabilis George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10728 El Dorado Northern Sierra Nevada Mountains, 0.8 mile east of Ice House Road on the road to Wright's Lake 1672 Comment
  UCR173959  Trillium angustipetalum George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10535 El Dorado Northern Sierra Nevada Mountains, Along Ice House Canyon Road, 10.6 mi. south of Wentworth Springs Road (just south of the Jones fork of Silver Creek and SE of Union Valley Reservoir) 1509 Comment
  UCR173984  Ribes roezlii var. roezlii George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-10 10678 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 9.1 miles north of Hwy US-50 1662 Comment
  UCR174204  Bromus hordeaceus George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10596 El Dorado Northern Sierra Nevada foothills, along Hwy US-50, 0.6 mile east of White Hall 1055 Comment
  UCR174294  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-7 10651 El Dorado Northern Sierra Nevada foothills, hiking trail, 3.5 miles northwest of Placerville along Calif. Hwy 49 512 Comment
  UCR175643  Carex specifica George K. Helmkamp, E. A. Helmkamp 2006-7-7 10834 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR175699  Polygonum phytolaccifolium George K. Helmkamp, E. A. Helmkamp 2006-7-10 10936 El Dorado Northern Sierra Nevada Mountains, 1.1 miles west of Silver Creek along the road from Ice House Reservoir to Wright's Lake 2043 Comment
  UCR175705  Heracleum maximum George K. Helmkamp, E. A. Helmkamp 2006-7-10 10930 El Dorado Northern Sierra Nevada Mountains, 1.1 miles west of Silver Creek along the road from Ice House Reservoir to Wright's Lake 2043 Comment
  UCR175998  Chenopodium botrys George K. Helmkamp, E. A. Helmkamp 2006-7-28 11041 El Dorado Northern Sierra Nevada Mtns, 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd 2226 Comment
  UCR176060  Chrysolepis sempervirens George K. Helmkamp, E. A. Helmkamp 2006-8-14 11264 El Dorado Northern Sierra Nevada Mtns, Sayles Flat at the junction of Mount Ralston Trail and US-50, c. 0.9 mile south of Twin Bridges 1960 Comment
  UCR176231  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2006-7-31 11052 El Dorado Northern Sierra Nevada Mountains, along Wrights Lake Road (Forest Route 4), 3.3 miles north of Hwy US-50 2049 Comment
  UCR176237  Senecio integerrimus var. major George K. Helmkamp, E. A. Helmkamp 2006-7-7 10851 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176238  Osmorhiza occidentalis George K. Helmkamp, E. A. Helmkamp 2006-7-7 10850 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176241  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2006-7-7 10846 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176247  Lupinus adsurgens George K. Helmkamp, E. A. Helmkamp 2006-7-7 10849 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176248  Delphinium depauperatum George K. Helmkamp, E. A. Helmkamp 2006-7-7 10853 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176290  Lotus George K. Helmkamp, Elizabeth Helmkamp 2006-5-18 10472 El Dorado Northern Sierra Nevada Foothills, Spring Valley; Telephone Ridge area, NW of Riverton. Brockliss Canyon Road, about 11 mi. NW of junction with Meadowridge Road and Ice House Canyon Road (SSW of Union Valley Reservior, c. 1.4 air mi. N of US Hwy 50) 1189 Comment
  UCR176744  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2006-7-12 10950 El Dorado Northern Sierra Nevada Mtns, Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges 1960 Comment
  UCR176749  Juncus balticus George K. Helmkamp, E. A. Helmkamp 2006-7-12 10944 El Dorado Northern Sierra Nevada Mtns, Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges 1960 Comment
  UCR177171  Dichelostemma volubile George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-7 10656 El Dorado Northern Sierra Nevada foothills, hiking trail, 3.5 miles northwest of Placerville along Calif. Hwy 49 512 Comment
  UCR177230  Spiranthes romanzoffiana George K. Helmkamp, E. A. Helmkamp 2005-8-9 9805 El Dorado Northern Sierra Nevada Mtns., El Dorado National Forest; west of Lake Tahoe; Ice House Road, 1.9 miles N of Wentworth Rd (turnoff to Stump Meadows) 1649 Comment
  UCR177873  Rumex salicifolius var. denticulatus George K. Helmkamp, E. A. Helmkamp 2006-8-7 11203 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring; Tragedy Spring Road, 0.3 mile north of Calif. Hwy 88 2424 Comment
  UCR178418  Notholithocarpus densiflorus var. echinoides George K. Helmkamp, E. A. Helmkamp 2006-9-2 11333 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Volcanoville Road and Wentworth Springs Road about 7 miles east of Georgetown 925 Comment
  UCR178633  Epilobium ciliatum George K. Helmkamp, E. A. Helmkamp 2006-9-2 11328 El Dorado Northern Sierra Nevada Mountains Foothills, along Georgetown Road, 0.3 mi northeast of Georgetown 840 Comment
  UCR178643  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2006-9-7 11357 El Dorado Northern Sierra Nevada Mountains, Ice House Road. Robbs Valley near Robbs Hut junction 1720 Comment
  UCR179216  Elymus glaucus George K. Helmkamp, E. A. Helmkamp 2006-9-12 11375 El Dorado Northern Sierra Nevada Mountains, Along Calif. Hwy 89, 1.2 miles west of the Alpine County line. General area of Luther Pass and Grass Lake 2363 Comment
  UCR179366  Centaurium muehlenbergii George K. Helmkamp, E. A. Helmkamp 2006-9-20 11429 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Ice House Road [at Riverton] and US-50 east of Pacific 1000 Comment
  UCR179564  Amaranthus albus George K. Helmkamp, E. A. Helmkamp 2006-9-29 11452 El Dorado Northern Sierra Nevada Mountains Foothills, Salmon Falls Rd just west of Calif. Hwy 49 and 4 miles south of Cool 351 Comment
  UCR179739  Melilotus albus George K. Helmkamp, E. A. Helmkamp 2006-10-20 11545 El Dorado Northern Sierra Nevada Mountains Foothills, Bucks Bar Road, 3.9 miles south of Pleasant Valley Road, general vicinity of Somerset 625 Comment
  UCR179777  Echinochloa crus-galli George K. Helmkamp, E. A. Helmkamp 2006-10-18 11536 El Dorado Northern Sierra Nevada Mountains Foothills, Diamond Springs; village along Calif. Hwy 49 south of Placerville 540 Comment
  UCR179778  Pinus sabiniana George K. Helmkamp, E. A. Helmkamp 2006-9-29 11454 El Dorado Northern Sierra Nevada Mountains Foothills, Salmon Falls Rd just west of Calif. Hwy 49 and 4 miles south of Cool 351 Comment
  UCR179800  Scirpus acutus var. occidentalis George K. Helmkamp, E. A. Helmkamp 2006-9-30 11457 El Dorado Northern Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home park; Pleasant Valley Rd west end of Diamond Springs 537 Comment
  UCR183810  Heteromeles arbutifolia George K. Helmkamp, E. A. Helmkamp 2006-12-7 11583 El Dorado Northern Sierra Nevada Mountains Foothills, Rock Creek Road, 1.2 mi east of Calif. Hwy 193, northeast of the South Fork of American River at Chili Bar 399 Comment
  UCR184372  Stellaria media George K. Helmkamp, E. A. Helmkamp 2007-3-3 11592 El Dorado Northern Sierra Nevada foothills., Cameron Park, junction of Santos Circle & Santos Court 370 Comment
  UCR184381  Arctostaphylos viscida subsp. viscida George K. Helmkamp, E. A. Helmkamp 2007-1-31 11587 El Dorado Foothills, northern Sierra Nevada Mountains, west of Shingle Springs, end of Palmer Drive, 0.5 mi northeast of the junction of Cameron Park Rd and Calif. Hwy 50 402 Comment
  UCR184795  Claytonia parviflora subsp. parviflora George K. Helmkamp, E. A. Helmkamp 2007-5-9 11975 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 2.0 miles northeast of US-50, c. 1.25 mi. NE of Riverton 1220 Comment
  UCR184926  Trifolium ciliolatum George K. Helmkamp, E. A. Helmkamp 2007-5-7 11958 El Dorado Foothills, northern Sierra Nevada Mountains, Pedro Hills Road, 0.8 mile wet of Calif. Hwy 49, junction of roads 5.3 miles south of Cool 354 Comment
  UCR187065  Hordeum murinum subsp. leporinum George K. Helmkamp, E. A. Helmkamp 2007-5-5 11936 El Dorado Foothills, Northern Sierra Nevada Mountains, along CA-49, 3.7 miles northwest of Placerville 549 Comment
  UCR187071  Lamium purpureum George K. Helmkamp, E. A. Helmkamp 2007-5-1 11915 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-49, 6.1 miles northwest of Placerville 454 Comment
  UCR187077  Hypochaeris glabra George K. Helmkamp, E. A. Helmkamp 2007-5-5 11938 El Dorado Foothills, Northern Sierra Nevada Mountains, along CA-49, 3.7 miles northwest of Placerville 549 Comment
  UCR187078  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2007-5-5 11937 El Dorado Foothills, Northern Sierra Nevada Mountains, along CA-49, 3.7 miles northwest of Placerville 549 Comment
  UCR188148  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2007-4-30 11898 El Dorado Foothills, Northern Sierra Nevada Mountains, hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  UCR188174  Collinsia George K. Helmkamp, E. A. Helmkamp 2007-4-30 11893 El Dorado Foothills, Northern Sierra Nevada Mountains, hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  UCR188243  Acer macrophyllum George K. Helmkamp, E. A. Helmkamp 2007-4-27 11860 El Dorado Foothills, Northern Sierra Nevada Mountains, Bridal Veil Falls, Esmeralda Creek, along US-50 east of Pacific House 1027 Comment
  UCR188560  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2007-9-26 13015 El Dorado Northern Sierra Nevada Mountains Foothills, Bonetti Road, 1.1 miles south of its junction with Mormon Emigrant Trail, just east of Jenkinson Lake 1189 Comment
  UCR188833  Trifolium depauperatum var. truncatum George K. Helmkamp, E. A. Helmkamp 2007-3-23 11688 El Dorado Northern Sierra Nevada Mountains Foothills, hills bordering the east end of Sacramento Valley; Bass Lake Road at the southeast end of Bass Lake 381 Comment
  UCR189004  Calochortus leichtlinii George K. Helmkamp, Elizabeth Helmkamp, Amy Barnes 2007-6-20 12384 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 17.2 miles ESE of its junction with Sly Park Road at Jenkinson Lake 2128 Comment
  UCR189009  Lupinus latifolius var. columbianus George K. Helmkamp 2007-7-7 12460 El Dorado Northern Sierra Nevada Mountains, along CA-89, 5.4 miles northwest of Luther Pass in the Grass Lake area 2018 Comment
  UCR189012  Eleocharis pauciflora George K. Helmkamp, Elizabeth Helmkamp 2007-6-20 12412 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail 2.0 miles west of its junction with Hwy CA-88 and at Singleton Springs 2247 Comment
  UCR189454  Draba verna George K. Helmkamp, E. A. Helmkamp 2007-3-11 11615 El Dorado Foothills, Northern Sierra Nevada Mountains, Traverse Creek Road at the creek crossing, 2.4 miles northeast of CA-193 518 Comment
  UCR189459  Polygonum douglasii subsp. douglasii George K. Helmkamp, E. A. Helmkamp 2007-8-4 12711 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail at Leek Spring meadow, about 2 miles northwest of CA-88 2238 Comment
  UCR189500  Geranium molle George K. Helmkamp, E. A. Helmkamp 2007-3-22 11664 El Dorado Foothills, Northern Sierra Nevada Mountains, Bucks Bar Road, 4.4 miles south of Pleasant Valley Road at the junction of Sand Ridge road 628 Comment
  UCR189600  Lotus argophyllus var. fremontii George K. Helmkamp, Elizabeth Helmkamp, Amy Barnes 2007-6-20 12372 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 13.2 miles ESE of its junction with Sly Park Road at Jenkinson Lake 1976 Comment
  UCR189616  Nicotiana quadrivalvis George K. Helmkamp, E. A. Helmkamp 2007-8-19 12777 El Dorado Foothills, Northern Sierra Nevada Mountains, Lake Oaks Mobile Home Park, Diamond Springs 521 Comment
  UCR189761  Eriogonum roseum George K. Helmkamp, E. A. Helmkamp 2007-9-1 12858 El Dorado Foothills, northern Sierra Nevada Mountains, Happy Valley cutoff road 0.2 mile southeast of its junction with CA-E-16 (generally, northeast of Somerset) 607 Comment
  UCR189767  Gnaphalium canescens subsp. thermale George K. Helmkamp, E. A. Helmkamp 2007-8-9 12724 El Dorado Northern Sierra Nevada Mountains, Wright's Lake; south side of the lake at the entrance to the campground 2131 Comment
  UCR189768  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2007-9-1 12862 El Dorado Foothills, northern Sierra Nevada Mountains, Happy Valley Road 3.2 miles east of its junction with CA-E-16 (just west of Sweeney's Crossing) 628 Comment
  UCR189903  Erigeron George K. Helmkamp, E. A. Helmkamp 2007-8-9 12731 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 1.4 miles south of the lake 2101 Comment
  UCR189922  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2007-8-30 12850 El Dorado Foothills, northern Sierra Nevada Mountains, Prospector Road, 0.1 mile north of Marshall Road near Indian Creek 268 Comment
  UCR190189  Navarretia squarrosa George K. Helmkamp, E. A. Helmkamp 2007-7-23 12588 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the crossing of Traverse Creek; about 2 miles southeast of its junction with CA-193 732 Comment
  UCR190714  Rhamnus californica subsp. tomentella George K. Helmkamp, E. A. Helmkamp 2007-9-19 12989 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Lost Creek Road and French Creek Road just north of Frenchtown 366 Comment
  UCR191133  Eriophyllum lanatum var. croceum George K. Helmkamp, E. A. Helmkamp 2007-6-8 12303 El Dorado Northern Sierra Nevada Mountains, Bonetti Road, 5.4 miles south of Mormon Emigrant Trail, generally east of Jenkinson Lake 1372 Comment
  UCR191143  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2007-6-8 12312 El Dorado Northern Sierra Nevada Mountains, junction of Bonetti Road and Mormon Emigrant Trail [Silver Lake Rd.], east of Jenkinson Lake 1226 Comment
  UCR192600  Viola adunca George K. Helmkamp, E. A. Helmkamp 2007-5-31 12229 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, north of US-50 at the Lyon's Creek trailhead and creek crossing 2058 Comment
  UCR192903  Viola bakeri George K. Helmkamp, E. A. Helmkamp 2007-5-31 12236 El Dorado Northern Sierra Nevada Mountains, Forest Route 42, 1.2 miles west of its junction with Wrights Lake Road, generally between Wrights Lake and Ice House Reservoir 2021 Comment
  UCR193506  Ericameria arborescens George K. Helmkamp, E. A. Helmkamp 2007-9-11 12947 El Dorado Northern Sierra Nevada Mountains, Ice House Road 4.3 miles north of its junction with US-50 1393 Comment
  UCR193510  Aster occidentalis var. yosemitanus George K. Helmkamp, E. A. Helmkamp 2007-9-11 12943 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road 4.6 miles north of its junction with US-50 2037 Comment
  UCR193557  Bidens frondosa George K. Helmkamp, E. A. Helmkamp 2007-9-10 12919 El Dorado Northern Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; near junction of CA-49 and Patterson Drive 530 Comment
  UCR194243  Abies concolor George K. Helmkamp, E. A. Helmkamp 2007-5-31 12218 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.3 miles north of US-50 at Wrights Lake junction east of Kyburz 2043 Comment
  UCR195090  Sidalcea malviflora subsp. asprella George K. Helmkamp, E. A. Helmkamp 2007-5-27 12157 El Dorado Northern Sierra Nevada Mountains Foothills, 0.7 mile down a hiking trail northeast of CA-49; trail starting 3.5 miles northwest of Placerville 430 Comment
  UCR196765  Pityrogramma triangularis George K. Helmkamp, E. A. Helmkamp 2008-6-3 13584 El Dorado Sierra Nevada Mountains, Forbay Road, 7.1 miles northwest of CA-50 (road junction in Pollock Pines), no-outlet road leading to the South Fork of the American River 716 Comment
  UCR196771  Lotus incanus George K. Helmkamp, E. A. Helmkamp 2008-6-3 13588 El Dorado Sierra Nevada Mountains, Forbay Road, 4.8 miles northwest of its junction with CA-50 at Pollock Pines 965 Comment
  UCR196778  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2008-6-5 13604 El Dorado Sierra Nevada Mountains Foothills, Forbay Road at crossing of the South Fork American River 595 Comment
  UCR196800  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2008-6-3 13585 El Dorado Sierra Nevada Mountains, Forbay Road, 4.8 miles northwest of its junction with CA-50 at Pollock Pines 965 Comment
  UCR196838  Polystichum imbricans subsp. curtum George K. Helmkamp, E. A. Helmkamp 2008-6-3 13571 El Dorado Sierra Nevada Mountains, Forbay Road, 7.1 miles northwest of CA-50 (road junction in Pollock Pines), no-outlet road leading to the South Fork of the American River 716 Comment
  UCR196841  Acer macrophyllum George K. Helmkamp, E. A. Helmkamp 2008-6-3 13565 El Dorado Sierra Nevada Mountains, Pony Express Trail, 0.8 mile east of Sly Park Road (Pollock Pines) and parallel to US-50 1213 Comment
  UCR196879  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2008-5-15 13442 El Dorado Sierra Nevada Mountains, White Meadow Road, 0.1 mile west of its junction with Ice House Road, c. 1.3 miles up Ice House Road from US-50 1055 Comment
  UCR196890  Pinus contorta subsp. murrayana George K. Helmkamp, E. A. Helmkamp 2008-5-15 13450 El Dorado Sierra Nevada Mountains, Pea Vine Ridge Road, 0.2 mile west of its junction with White Meadow Road, c. 4.8 miles west of the junction of White Meadow and Ice House roads 1155 Comment
  UCR197240  Scleranthus annuus George K. Helmkamp, E. A. Helmkamp 2008-4-25 13316 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR197273  Filago californica George K. Helmkamp, E. A. Helmkamp 2008-4-25 13305 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR197563  Gamochaeta coarctata George K. Helmkamp, E. A. Helmkamp 2008-5-28 13494 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; Patterson Dr. and CA-49 530 Comment
  UCR197663  Triteleia ixioides subsp. anilina George K. Helmkamp, E. A. Helmkamp 2008-6-9 13653 El Dorado Northern Sierra Nevada Mountains, Cat Creek Road, 3.6 miles north of its junction with CA-88, the jct. is 4.2 miles east of Cook's Station 1753 Comment
  UCR197826  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2008-7-11 13762 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring Road, 8.0 miles southwest of Kirkwood and 0.1 mile north of its junction with CA-88 2421 Comment
  UCR198420  Lotus humistratus George K. Helmkamp, E. A. Helmkamp 2008-4-25 13314 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR198436  Linanthus dichotomus George K. Helmkamp, E. A. Helmkamp 2008-4-30 13353 El Dorado Sierra Nevada Mountains Foothills, along Bear Creek Road, 0.2 mile southeast of its junction with Meadow Brook Road, south of Georgetown 696 Comment
  UCR198450  Pseudotsuga menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2008-3-11 13145 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR200910  Ribes cereum var. cereum George K. Helmkamp, E. A. Helmkamp 2008-8-30 14050 El Dorado Northern Sierra Nevada Mountains, Leek Spring Valley, Foster Meadow Road 0.9 miles southwest of its junction with Mormon Emigrant Trail 2241 Comment
  UCR200921  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2008-9-9 14078 El Dorado Foothills, northern Sierra Nevada Mountains, junction of Bear Creek Road and Meadow Brook Road at Bear Creek; east of CA-193 and south of Georgetown 678 Comment
  UCR200927  Aster George K. Helmkamp, E. A. Helmkamp 2008-9-9 14085 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the creek crossing, 1.6 miles east of CA-193 628 Comment
  UCR200928  Eriogonum luteolum var. luteolum George K. Helmkamp, E. A. Helmkamp 2008-9-9 14083 El Dorado Foothills, northern Sierra Nevada Mountains, junction of Bear Creek Road and Meadow Brook Road at Bear Creek; east of CA-193 and south of Georgetown 678 Comment
  UCR201907  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2008-8-30 14040 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail 2.4 miles northwest of its junction with CA-88 2271 Comment
  UCR202756  Epilobium angustifolium subsp. circumvagum George K. Helmkamp, E. A. Helmkamp 2008-8-8 13966 El Dorado Northern Sierra Nevada Mountains, Echo Summit, west side of a Highway Maintenance Station and about 100 yards north of CA-50 2256 Comment
  UCR206000  Erodium cicutarium George K. Helmkamp, E. A. Helmkamp 2009-6-3 14878 El Dorado Sierra Nevada Mountains Foothills, Pony Express Trail, 0.7 mile east of its junction with Sly Park Road in Pollock Pines 851 Comment
  UCR206074  Senecio triangularis George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13910 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.4 miles north of its junction with CA Hwy 50 2043 Comment
  UCR206079  Ligusticum grayi George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13921 El Dorado Northern Sierra Nevada Mountains, Dark Lake, beside Wrights Lake Road 0.4 mile northwest of the entrance to Wrights Lake 2134 Comment
  UCR206090  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2009-6-3 14879 El Dorado Sierra Nevada Mountains Foothills, Pony Express Trail, 0.7 mile east of its junction with Sly Park Road in Pollock Pines 851 Comment
  UCR206388  Asclepias cordifolia George K. Helmkamp, E. A. Helmkamp 2009-5-19 14720 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 0.2 miles west of its junction with Happy Valley Cutoff road 561 Comment
  UCR206599  Valeriana californica George K. Helmkamp, E. A. Helmkamp 2009-7-2 15096 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR206609  Juncus chlorocephalus George K. Helmkamp, E. A. Helmkamp 2009-7-2 15097 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR206670  Arctostaphylos viscida subsp. viscida George K. Helmkamp, E. A. Helmkamp 2009-3-5 14329 El Dorado Northern Sierra Nevada Mtns. Foothills, Happy Valley Cutoff road, 0.1 mile east of its junction with Mt. Aukum Road, south of Pleasant Valley 617 Comment
  UCR206699  Pseudobahia heermannii George K. Helmkamp, E. A. Helmkamp 2009-3-19 14427 El Dorado Sierra Nevada Mtns. Foothills, Rock Creek Road at the Rock Creek crossing; about 3.5 miles west of Finnon Reservoir 412 Comment
  UCR206705  Claytonia parviflora subsp. grandiflora George K. Helmkamp, E. A. Helmkamp 2009-3-5 14331 El Dorado Northern Sierra Nevada Mtns. Foothills, Sand Ridge Road 4.3 miles east of its junction with CA-49 494 Comment
  UCR206763  Erodium cicutarium George K. Helmkamp, E. A. Helmkamp 2009-3-19 14411 El Dorado Sierra Nevada Mtns. Foothills, Rock Creek Road, 2.4 miles east of its junction with CA-193, above South Fork of American River 430 Comment
  UCR206795  Lythrum hyssopifolia George K. Helmkamp, E. A. Helmkamp 2009-5-24 14776 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.3 miles eat of the Cosumnes River and CA-49 521 Comment
  UCR206860  Hypericum formosum George K. Helmkamp, E. A. Helmkamp 2009-6-25 15041 El Dorado Sierra Nevada Mountains Foothills, Forbay Road above South Fork American River, 6.4 miles north of Pony Express Trail in Pollock Pines 613 Comment
  UCR206991  Calochortus minimus George K. Helmkamp, E. A. Helmkamp 2009-7-2 15091 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR206997  Linanthus ciliatus George K. Helmkamp, Amy Barnes 2009-7-8 15153 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR206998  Phacelia mutabilis George K. Helmkamp, Amy Barnes 2009-7-8 15154 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207001  Spiraea densiflora George K. Helmkamp, Amy Barnes 2009-7-8 15167 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207007  Gnaphalium palustre George K. Helmkamp, Amy Barnes 2009-7-8 15166 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207008  Mimulus breweri George K. Helmkamp, Amy Barnes 2009-7-8 15170 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207026  Rumex pulcher George K. Helmkamp, E. A. Helmkamp 2009-5-26 14804 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR207040  Ribes cereum var. cereum George K. Helmkamp, Amy Barnes 2009-7-8 15159 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207163  Lupinus latifolius var. columbianus George K. Helmkamp, E. A. Helmkamp 2009-7-22 15276 El Dorado Sierra Nevada Mountains, Forestry Route 42, 1.6 miles west of its junction with Wrights Lake Road 1851 Comment
  UCR207421  Deschampsia cespitosa subsp. cespitosa George K. Helmkamp, Amy Barnes 2009-7-8 15144 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207427  Mimulus torreyi George K. Helmkamp, Amy Barnes 2009-7-8 15152 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207428  Spiranthes romanzoffiana George K. Helmkamp, Amy Barnes 2009-7-8 15147 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207649  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2009-4-21 14545 El Dorado Sierra Nevada Mountains Foothills, along CA-193, 1.1 miles south of the South Fork American River at Chili Bar 381 Comment
  UCR207652  Phacelia cicutaria var. cicutaria George K. Helmkamp, E. A. Helmkamp 2009-4-21 14522 El Dorado Sierra Nevada Mountains Foothills, junction of Rock Creek Road and CA-193, north of Chili Bar and the South Fork of the American River 390 Comment
  UCR207665  Lotus argophyllus var. fremontii George K. Helmkamp, E. A. Helmkamp 2009-4-21 14533 El Dorado Sierra Nevada Mountains Foothills, Rock Creek Road, 4.2 miles west of the bridge over Rock Creek 401 Comment
  UCR207671  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2009-4-21 14532 El Dorado Sierra Nevada Mountains Foothills, Rock Creek Road, 4.2 miles west of the bridge over Rock Creek 401 Comment
  UCR207867  Polypodium calirhiza George K. Helmkamp, E. A. Helmkamp 2009-5-14 14695 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  UCR207868  Nemophila parviflora var. austiniae George K. Helmkamp, E. A. Helmkamp 2009-5-14 14694 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  UCR208564  Erodium cicutarium George K. Helmkamp, E. A. Helmkamp 2009-5-4 14586 El Dorado Sierra Nevada Mountains Foothills, junction of Bonetti Road and Mormon Emigrant Trail, 3.6 miles east of Sly Park Rd. and Jenkinson Lake 1226 Comment
  UCR208569  Luzula comosa George K. Helmkamp, E. A. Helmkamp 2009-5-4 14600 El Dorado Sierra Nevada Mountains Foothills, Sly Park Road, 0.3 miles southwest of its junction with Mormon Emigrant Trail 1067 Comment
  UCR209016  Juncus bufonius var. bufonius George K. Helmkamp, E. A. Helmkamp 2009-8-19 15511 El Dorado Sierra Nevada Mountains, Wright's Lake Road, 8.6 miles north of its upper junction with Ice House Road 1785 Comment
  UCR209031  Eriogonum nudum var. nudum George K. Helmkamp, E. A. Helmkamp 2009-8-19 15499 El Dorado Sierra Nevada Mountains, along Ice House Road at SW shore of Loon Lake, 2.6 miles south of its end on the north side of the lake 1973 Comment
  UCR209037  Agrostis George K. Helmkamp, E. A. Helmkamp 2009-8-19 15497 El Dorado Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  UCR209038  Castilleja tenuis George K. Helmkamp, E. A. Helmkamp 2009-8-19 15493 El Dorado Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  UCR209041  Epilobium ciliatum George K. Helmkamp, E. A. Helmkamp 2009-8-19 15485 El Dorado Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  UCR209763  Chenopodium berlandieri George K. Helmkamp, E. A. Helmkamp 2009-8-14 15469 El Dorado Sierra Nevada Mountains Foothills, junction of Sand Ridge Road and Cutaway Lane, 2.0 miles west of Bucks Bar Road 642 Comment
  UCR215922  Phacelia hastata var. compacta George K. Helmkamp, E. A. Helmkamp 2009-6-29 15064 El Dorado Sierra Nevada Mountains, Ice House Road, 5.5 miles north of its junction with CA-50, c. 10.5 air miles NE (78 deg. ) of Pollock Pines 1520 Comment
  UCR216045  Lotus nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 2009-6-29 15056 El Dorado Sierra Nevada Mountains Foothills, Ice House Road, 0.2 miles north of its junction with CA-50, c. 7.3 miles ENE (83 deg. ) of Pollock Pines 989 Comment
  UCR217156  Arctostaphylos viscida subsp. viscida George K. Helmkamp, E. A. Helmkamp 2010-5-14 16030 El Dorado Sierra Nevada Mountains Foothills, along CA-16 (Mt. Aukum Rd.), 1.8 miles northeast of Somerset 567 Comment
  UCR217173  Lupinus albifrons var. collinus George K. Helmkamp, E. A. Helmkamp 2010-5-14 16044 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 1.1 mi. NE (69 deg. ) of Somerset, just west of the bridge over the Cosumnes River 544 Comment
  UCR217265  Prunus emarginata George K. Helmkamp, Mary Jane Ganive, Mary Alice Barnes 2010-6-15 16300 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 14 miles southeast of junction with Sly Park Road at Jenkinson Lake 1662 Comment
  UCR217271  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2010-5-13 16010 El Dorado Sierra Nevada Mountains Foothills, Mosquito Road, 5.5 miles northeast of its junction with US-50 in Placerville 500 Comment
  UCR217849  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2010-5-22 16092 El Dorado Sierra Nevada Mountains Foothills, Perry Creek Road, 0.1 mile south of its junction with Slug Gulch Road, 0.4 mi. northeast of Fairplay 677 Comment
  UCR217852  Vicia hirsuta George K. Helmkamp, Laurel Bezdecheck 2010-5-28 16102 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.7 miles east of its junction with Perry Creek Road, c. 3.5 air mi. ESE (96 deg. ) of Fair Play 942 Comment
  UCR217865  Silene lemmonii George K. Helmkamp, E. A. Helmkamp 2010-7-9 16482 El Dorado Northern Sierra Nevada Mountains, Light Canyon Road, 0.1 mile north of its junction with Mormon Emigrant Trail (Iron Mountain Rd.), 20.5 mi. ESE (99 deg. ) of Placerville 1831 Comment
  UCR217871  Eriophyllum lanatum var. achilleoides George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-6 16450 El Dorado Sierra Nevada Mountains, Silver Fork Road, 1.9 miles south of its junction with US-50 in Kyburz 1473 Comment
  UCR217877  Trifolium willdenovii George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16128 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 2.9 miles east of its junction with Perry Creek road 1012 Comment
  UCR217878  Scleranthus annuus George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16127 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 2.9 miles east of its junction with Perry Creek road 1012 Comment
  UCR217882  Sanicula crassicaulis George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16134 El Dorado Sierra Nevada Mountains Foothills, along Perry Creek, about 0.2 mile south of Slug Gulch Road, at a point 4.7 miles east of junction with Perry Creek Road 1027 Comment
  UCR217893  Parvisedum pumilum George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16113 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.7 rd. miles east of its junction with Perry Creek road, air 3.9 mi. ESE (98 deg. ) of Fair Play 1082 Comment
  UCR217935  Bromus hordeaceus George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16144 El Dorado Sierra Nevada Mountains Foothills, along Perry Creek, about 0.2 mile south of Slug Gulch Road, at a point 4.7 miles east of junction with Perry Creek Road 1027 Comment
  UCR218094  Astragalus bolanderi George K. Helmkamp, E. A. Helmkamp 2010-7-23 16615 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 0.2 mile west of its junction with Wright's Lake Road and beside Silver Creek, 4 miles NE (31 deg. ) of Kyburz 2021 Comment
  UCR218099  Lupinus andersonii George K. Helmkamp, E. A. Helmkamp 2010-7-23 16621 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 0.2 mile west of its junction with Wright's Lake Road and beside Silver Creek, 4 miles NE (31 deg. ) of Kyburz 2021 Comment
  UCR218264  Claytonia parviflora subsp. grandiflora George K. Helmkamp, E. A. Helmkamp 2010-5-22 16078 El Dorado Sierra Nevada Mountains Foothills, at the junction of Perry Creek Road and Slug Gulch Road, 0.5 mi. northeast of the village of Fairplay 677 Comment
  UCR218269  Polygonum douglasii subsp. douglasii George K. Helmkamp, E. A. Helmkamp 2010-7-23 16605 A El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road at the entrance to a camping area, 0.2 mile west of the lake, 5.5 miles NE (35 deg. ) of Kyburz 2114 Comment
  UCR218442  Clarkia lassenensis George K. Helmkamp, E. A. Helmkamp 2010-7-9 16489 El Dorado Northern Sierra Nevada Mountains, Light Canyon Road, 0.1 mile north of its junction with Mormon Emigrant Trail (Iron Mountain Rd.), 20.5 mi. ESE (99 deg. ) of Placerville 1831 Comment
  UCR218761  Horkelia fusca subsp. parviflora George K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16560 El Dorado Northern Sierra Nevada Mountains, southeast side of Wright's Lake, 5.8 mi. NE (34 deg. ) of Kyburz 2085 Comment
  UCR218977  Castilleja foliolosa George K. Helmkamp, E. A. Helmkamp 2010-5-17 16068 El Dorado Sierra Nevada Mountains Foothills, Pine Hill Road, 0.8 mile above the junction with Bertana Court; edge of Pine Hill Ecological Reserve 610 Comment
  UCR218978  Lupinus bicolor George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16328 El Dorado Sierra Nevada Mountains Foothills, about 0.1 mile south of Slug Gulch Road at a point 4.7 miles east of its junction with Perry Creek Road 1021 Comment
  UCR218982  Pteridium aquilinum George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16322 El Dorado Sierra Nevada Mountains Foothills, about 0.1 mile south of Slug Gulch Road at a point 4.7 miles east of its junction with Perry Creek Road 1021 Comment
  UCR219137  Juglans californica var. hindsii George K. Helmkamp, E. A. Helmkamp 2009-9-17 15634 El Dorado Sierra Nevada Mountains Foothills, Pleasant Valley Road at its junction with Oak Hill Road, near the eastern edge of Diamond Springs 692 Comment
  UCR219138  Juglans californica var. hindsii George K. Helmkamp, E. A. Helmkamp 2009-9-17 15632 El Dorado Foothills, northern Sierra Nevada Mountains, Pleasant Valley Road (CA-49) in Diamond Springs, 0.1 mile east of the junction with Patterson Drive 537 Comment
  UCR219141  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-22 15649 El Dorado Sierra Nevada Mountains Foothills, fishing pond on Spanish Creek, along Mt. Aukum Rd. (E-16), 2.3 miles north of Mount Aukum 579 Comment
  UCR219147  Daucus carota George K. Helmkamp, E. A. Helmkamp 2009-9-29 15659 El Dorado Sierra Nevada Mountains Foothills, Canyon Valley Rd. in the east end of Diamond Springs, c. 0.1 mile SE of Pleasant Valley Road 567 Comment
  UCR219148  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-29 15660 El Dorado Sierra Nevada Mountains Foothills, Canyon Valley Rd. in the east end of Diamond Springs, c. 0.1 mile SE of Pleasant Valley Road 567 Comment
  UCR219660  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2009-10-26 15713 El Dorado Sierra Nevada Mountains Foothills, Diamond Springs, at the northwest end of Patterson Lake, south of Patterson Drive and CA-49 523 Comment
  UCR222365  Mimulus guttatus George K. Helmkamp, Mary Alice Barnes, Mary Jane Ganive 2010-6-13 16265 El Dorado Sierra Nevada Mountains Foothills, along Forebay Road, just south of Forebay Bridge over the South Fork American River 588 Comment
  UCR222536  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2010-4-17 15877 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  UCR222976  Mimulus aurantiacus George K. Helmkamp, E. A. Helmkamp 2010-4-23 15931 El Dorado Sierra Nevada Mountains Foothills, Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  UCR224224  Pseudobahia heermannii George K. Helmkamp, E. A. Helmkamp 2010-4-24 15941 El Dorado Sierra Nevada Mountains Foothills, Oak Ridge Road just east of its junction with Blend-O-Green Way, jct. is north of Green Valley Road 390 Comment
  UCR224229  Micropus californicus var. californicus George K. Helmkamp, E. A. Helmkamp 2010-4-23 15918 El Dorado Sierra Nevada Mountains Foothills, along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing 200 Comment
  UCR224232  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2010-4-23 15914 El Dorado Sierra Nevada Mountains Foothills, along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing 200 Comment
  UCR224242  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2010-4-24 15937 El Dorado Sierra Nevada Mountains Foothills, Oak Ridge Road just east of its junction with Blend-O-Green Way, jct. is north of Green Valley Road 390 Comment
  UCR230720  Lotus George K. Helmkamp, E. A. Helmkamp 2010-9-30 16984 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 4.3 miles north of its junction with Wentworth Springs Road, 0.65 mi. SSW of Loon Lake 1976 Comment
  UCR231095  Collinsia torreyi var. wrightii George K. Helmkamp, E. A. Helmkamp 2010-8-7 16738 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trail, at Jim Quinn Spring 2136 Comment
  UCR232603  Conyza canadensis George K. Helmkamp, E. A. Helmkamp 2011-10-13 18426 El Dorado Northern Sierra Nevada Mountains, Pony Express Trail, 0.9 mile east of Sly Park Road in Pollock Pines 1220 Comment
  UCR232639  Saponaria officinalis George K. Helmkamp, E. A. Helmkamp 2011-10-13 18414 El Dorado Northern Sierra Nevada Mountains Foothills, Forebay Road, 8.1 miles northwest of Pollock Pines, at north side of bridge over the South Fork American River 596 Comment
  UCR232682  Ericameria arborescens George K. Helmkamp, E. A. Helmkamp 2011-10-13 18407 El Dorado Northern Sierra Nevada Mountains Foothills, Forebay Road, 4.2 miles north of Pony Express Trail in Pollock Pines 1011 Comment
  UCR233169B  Plagiobothrys fulvus George K. Helmkamp, E. A. Helmkamp 2010-3-20 15752 El Dorado Sierra Nevada Mountains Foothills, Marshall Road, 0.1 mile NE of its junction with CA-49 226 Comment
  UCR233301  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2011-9-1 18222 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  UCR233307  Arctostaphylos patula George K. Helmkamp, E. A. Helmkamp 2011-9-1 18207 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  UCR233308  Collomia grandiflora George K. Helmkamp, E. A. Helmkamp 2011-9-1 18208 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  UCR233326  Arabis holboellii var. retrofracta George K. Helmkamp, E. A. Helmkamp 2011-9-1 18227 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  UCR233356  Ribes roezlii var. roezlii George K. Helmkamp, E. A. Helmkamp 2011-9-1 18233 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  UCR233437  Lupinus polyphyllus var. burkei George K. Helmkamp, E. A. Helmkamp 2011-9-13 18241 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 21.4 rd. miles southeast of Jenkinson's Lake, between Silver Fork Road and Hwy 88, 1.1 mi. NW (331 deg. ) of Alder Hill 2270 Comment
  UCR233438  Platanthera dilatata var. leucostachys George K. Helmkamp, E. A. Helmkamp 2011-9-13 18240 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 21.4 rd. miles southeast of Jenkinson's Lake, between Silver Fork Road and Hwy 88, 1.1 mi. NW (331 deg. ) of Alder Hill 2270 Comment
  UCR234177  Navarretia prolifera subsp. lutea George K. Helmkamp, E. A. Helmkamp 2011-7-7 17634 El Dorado Northern Sierra Nevada Mountains, Park Creek Road, 0.4 mile east of its junction with (Co. Rd. E16) Sly Park Road, 1.4 mi. SE (111 deg. ) of Pollock Pines 1290 Comment
  UCR234178  Mimulus viscidus George K. Helmkamp, E. A. Helmkamp 2011-7-7 17635 El Dorado Northern Sierra Nevada Mountains, Park Creek Road, 0.4 mile east of its junction with (Co. Rd. E16) Sly Park Road, 1.4 mi. SE (111 deg. ) of Pollock Pines 1290 Comment
  UCR234182  Lupinus stiversii George K. Helmkamp, E. A. Helmkamp 2011-7-7 17633 El Dorado Northern Sierra Nevada Mountains, Park Creek Road, 0.4 mile east of its junction with (Co. Rd. E16) Sly Park Road, 1.4 mi. SE (111 deg. ) of Pollock Pines 1290 Comment
  UCR234207  Cordylanthus tenuis subsp. tenuis George K. Helmkamp, E. A. Helmkamp 2010-9-23 16972 El Dorado Northern Sierra Nevada Mountains, Round Tent Canyon Road, 0.56 miles west of its junction with Peavine Ridge Road at Forest Route 31 1521 Comment
  UCR235573  Iris hartwegii subsp. hartwegii George K. Helmkamp, E. A. Helmkamp 2012-5-3 18888 El Dorado Northern Sierra Nevada Mountains Foothills, Forebay Road, 4.3 miles north of Pollock Pines 1046 Comment
  UCR235586  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2012-5-3 18909 El Dorado Northern Sierra Nevada Mountains Foothills, unnamed road leading to power plant, 0.3 mile east of South Fork American River bridge 613 Comment
  UCR235598  Sanicula bipinnatifida George K. Helmkamp, E. A. Helmkamp 2012-4-30 18882 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road, 2.4 mile north of the bridge over the South Fork American River 694 Comment
  UCR235601  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2012-4-27 18862 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River 401 Comment
  UCR235607  Caucalis microcarpa George K. Helmkamp, E. A. Helmkamp 2012-4-27 18853 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River 401 Comment
  UCR235608  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2012-4-27 18858 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River 401 Comment
  UCR235626  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2012-4-27 18869 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River 401 Comment
  UCR235630  Galium aparine George K. Helmkamp, E. A. Helmkamp 2012-4-27 18864 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River 401 Comment
  UCR235640  Trifolium ciliolatum George K. Helmkamp, E. A. Helmkamp 2012-4-30 18885 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road, 2.4 mile north of the bridge over the South Fork American River 694 Comment
  UCR237035  Iris hartwegii subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2012-5-18 19008 El Dorado Northern Sierra Nevada Mountains, junction of Bonnetti Road (Capps Crossing Rd.) and Mormon Emigrant Trail, east of Jenkinson Lake 1261 Comment
  UCR237064  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2012-5-18 19030 El Dorado Northern Sierra Nevada Mountains Foothills, Sly Park Road (Hwy E-16) at the Fire Station, 1.3 miles southwest of the junction with Mormon Emigrant Trail 1081 Comment
  UCR237069  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2012-5-18 19021 El Dorado Northern Sierra Nevada Mountains Foothills, Capps Crossing Road (Bonnetti Rd.), 0.1 mile northwest of the bridge over Diamond Creek, E of Jenkinson Lake and S of US Hwy 50 1186 Comment
  UCR237560  Lupinus latifolius var. columbianus George K. Helmkamp, E. A. Helmkamp 2012-7-2 19295 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 2.9 miles west of its junction with CA-88 2271 Comment
  UCR238608  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2012-3-30 18642 El Dorado Northern Sierra Nevada Mountains Foothills, Happy Valley Road, just west of the bridge over the Consumnes River 543 Comment
  UCR241976  Rubus laciniatus George K. Helmkamp, E. A. Helmkamp 2012-9-15 19834 El Dorado Northern Sierra Nevada Mountains Foothills, Walton Lake; along Balderson Road, 0.4 mile south of its junction with Wentworth Springs Road 951 Comment
  UCR241992  Andropogon virginicus var. virginicus George K. Helmkamp, E. A. Helmkamp 2012-9-15 19838 El Dorado Northern Sierra Nevada Mountains Foothills, Walton Lake; along Balderson Road, 0.4 mile south of its junction with Wentworth Springs Road 951 Comment
  UCR242811  Perideridia parishii subsp. latifolia George K. Helmkamp, E. A. Helmkamp 2010-9-1 16894 El Dorado Northern Sierra Nevada Mountains, Mehrten Springs Road, 0.6 mile north of its junction wtih CA-88 2018 Comment
  UCR248395  Lotus purshianus var. purshianus George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22020 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 7.4 miles east of the junction with Volcanoville Road 1320 Comment
  UCR249550  Cryptantha George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20953 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.8 mile north of Mormon Emigrant Trail and near Jim Quinn Spring, N of Carson Pass Hwy 2116 Comment
  UCR249617  Mimulus guttatus George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20854 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz 1364 Comment
  UCR249618  Madia subspicata George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20853 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz 1364 Comment
  UCR249620  Kelloggia galioides George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20848 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz 1364 Comment
  UCR249976  Carex fracta George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20941 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.8 mile north of Mormon Emigrant Trail and near Jim Quinn Spring, N of Carson Pass Hwy 2116 Comment
  UCR249983  Nemophila maculata George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20942 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.8 mile north of Mormon Emigrant Trail and near Jim Quinn Spring, N of Carson Pass Hwy 2116 Comment
  UCR250154  Ceanothus cordulatus George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20923 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, north side of its junction with Mormon Emigrant Trail 2188 Comment
  UCR250159  Cryptantha George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20866 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR250280  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20931 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, north side of its junction with Mormon Emigrant Trail 2188 Comment
  UCR250615  Cordylanthus tenuis subsp. tenuis George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20891 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 8.3 miles east of its junction with Hwy E-16 at Jenkinsons Lake 1456 Comment
  UCR250702  Iris hartwegii subsp. hartwegii George K. Helmkamp, Mary Alice Barnes 2013-5-10 20540 El Dorado Northern Sierra Nevada Mtns. Foothills, Donaldson Trailhead along Volcanoville Road, 0.3 mile southeast of the junction with Bear Foot Road 1041 Comment
  UCR251241  Elymus elymoides subsp. californicus George K. Helmkamp, E. A. Helmkamp 2012-7-6 19345 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 0.4 mile north of Ice House village, 10.9 miles north of the junction with US-50 1707 Comment
  UCR251247  Muhlenbergia filiformis George K. Helmkamp, E. A. Helmkamp 2012-7-6 19364 El Dorado Northern Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50 2078 Comment
  UCR251248  Carex subfusca George K. Helmkamp, E. A. Helmkamp 2012-7-6 19352 El Dorado Northern Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50 2078 Comment
  UCR251274  Carex feta George K. Helmkamp, E. A. Helmkamp 2012-7-6 19362 El Dorado Northern Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50 2078 Comment
  UCR251279  Stipa occidentalis var. pubescens George K. Helmkamp, E. A. Helmkamp 2012-7-6 19327 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 0.2 mile north of Ice House community, 10.7 miles north of US-50 1683 Comment
  UCR253083  Trifolium repens George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22063 El Dorado Northern Sierra Nevada Mountains, junction of Ice House Road and Forestry Route 13N21, 0.9 mile south of the northern junction of Ice House Road and Wentworth Springs Road 1701 Comment
  UCR257171  Artemisia douglasiana George K. Helmkamp, Elizabeth Helmkamp 2013-10-12 22408 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 1.1 miles southeast of its junction with Hwy E-16, 0.97 air mi NE (63 deg. ) of Somerset 581 Comment
  UCR257193  Poa pratensis subsp. pratensis George K. Helmkamp, Mary Alice Barnes 2013-5-13 20560 El Dorado Sierra Nevada Mountains Foothills, along E-16 (Mt. Aukum Rd.), 3.3 miles north of the Amador County line, near D'Agostini Reservoir 569 Comment
  UCR257595  Senecio vulgaris George K. Helmkamp, Elizabeth Helmkamp 2014-1-25 22511 El Dorado Sierra Nevada Mountains Foothills, 1.15 air mi. ESE (106 deg. ) of Somerset, Grizzly Flat Road at the junction with Ladyhawke Way 748 Comment
  UCR257605  Lamium amplexicaule George K. Helmkamp, Elizabeth Helmkamp 2014-1-25 22510 El Dorado Sierra Nevada Mountains Foothills, 1.15 air mi. ESE (106 deg. ) of Somerset, Grizzly Flat Road at the junction with Ladyhawke Way 748 Comment
  UCR257695  Deschampsia cespitosa subsp. cespitosa George K. Helmkamp, Amy Barnes 2012-8-19 19649 El Dorado Northern Sierra Nevada Mountains, junction of Ice House Road and entrance to campground on the south end of Loon Lake 1980 Comment
  UCR257709  Poa secunda var. secunda George K. Helmkamp, Mary Alice Barnes 2013-4-30 20437 El Dorado Sierra Nevada Mountains, Mormon Emigrant Trail, 70 meters northwest of its junction with Park Creek Road, 1 mile NW of Bryants 1311 Comment
  UCR257712  Geranium dissectum George K. Helmkamp, Elizabeth Helmkamp 2013-5-2 20446 El Dorado Sierra Nevada Mountains Foothills, Camp Creek along Happy Valley Cutoff Road, 0.6 mile east of junction with Mt. Aukum Road, 1.35 air miles NE (62 deg. ) of Somerset 566 Comment
  UCR257770  Lotus purshianus var. purshianus George K. Helmkamp, Amy Barnes 2014-7-28 22947 El Dorado Sierra Nevada Mountains Foothills, Lake Walton beside Balderston Road; 1/4 mile south of Wentworth Springs Road 966 Comment
  UCR257886  Grindelia hirsutula var. davyi George K. Helmkamp, Amy Barnes 2014-7-28 22953 El Dorado Sierra Nevada Mountains, Wentworth Springs Road, 3.8 miles east of Stumpy Meadows Reservoir 1357 Comment
  UCR258372  Agrostis capillaris George K. Helmkamp 2014-6-18 22938 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, northwest end of Patterson Lake 529 Comment
  UCR258381  Madia gracilis George K. Helmkamp, Amy Barnes 2014-8-11 22983 El Dorado Northern Sierra Nevada Mountains, north of Union Valley Reservoir, junction of Robbs Peak Road and Ice House Road 1655 Comment
  UCR258388  Sericocarpus oregonensis George K. Helmkamp, Amy Barnes 2014-8-11 22987 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258396  Ipomopsis aggregata subsp. formosissima George K. Helmkamp, Amy Barnes 2014-8-11 22997 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258417  Aster occidentalis var. occidentalis George K. Helmkamp, Amy Barnes 2014-8-11 22989 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258418  Eriogonum nudum var. deductum George K. Helmkamp, Amy Barnes 2014-8-11 22988 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258533  Ceanothus prostratus George K. Helmkamp, Mary Alice Barnes 2013-4-30 20421 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 0.1 mile south of its junction with Mormon Emigrant Trail 1261 Comment
  UCR258543  Claytonia parviflora subsp. parviflora George K. Helmkamp, Mary Alice Barnes 2013-4-30 20426 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 0.1 mile south of its junction with Mormon Emigrant Trail 1261 Comment
  UCR262000  Solidago canadensis subsp. elongata George K. Helmkamp, Amy Barnes 2014-10-10 23164 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.6 mile northwest of Luther Pass 2378 Comment
  CAS-BOT-BC532318  Horkelia fusca var. parviflora G. K. Helmkamp; E. A. Helmkamp 2010-7-23 16609 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road at the entrance to a camping area, 0.2 mile west of the lake, 5.5 miles NE (35 deg. ) of Kyburz 2113 Comment
  SEINET8043931 Image available Melica bulbosa George K. Helmkamp, E. A. Helmkamp 2012-1 El Dorado Comment
  CLARK-A1045-1546  Sorghum sudanense George K. Helmkamp 1977-8-3 Fresno San Joaquin Valley Kingsburg; Selma 7.5'Q Comment
  RSA628602  Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 1998-5-14 3610 Fresno Coast Range; Wartham Creek Canyon, near Curry Mtn., ca. 6-7 miles (airline) SW of Coalinga, along CA Hwy 198, 20.8 mi. W of Interstate 5. 396 Comment
  UCR102076  Pterostegia drymarioides George K. Helmkamp, E. A. Helmkamp 1998-5-14 3605 Fresno Inner South Coast Range, Warthan Creek Canyon, near Curry Mtn., c. 6-7 miles (airline) SW of Coalinga, along Calif. Hwy 198, 20.8 mi. west of Interstate 5 366 Comment
  UCR102083  Delphinium parryi George K. Helmkamp, E. A. Helmkamp 1998-5-14 3598 Fresno Inner South Coast Range, Warthan Creek Canyon, near Curry Mtn., c. 6-7 miles (airline) SW of Coalinga, along Calif. Hwy 198, 20.8 mi. west of Interstate 5 366 Comment
  UCR102092  Eriophyllum jepsonii George K. Helmkamp, E. A. Helmkamp 1998-5-14 3607 Fresno Inner South Coast Range, Warthan Creek Canyon, near Curry Mtn., c. 6-7 miles (airline) SW of Coalinga, along Calif. Hwy 198, 20.8 mi. west of Interstate 5 366 Comment
  UCR107280  Trifolium albopurpureum George K. Helmkamp, E. A. Helmkamp 1998-5-14 3637 Fresno Coast Range, Warthan Creek Canyon, along Calif. Hwy 198, 34.76 mi. west of Interstate 5, west of Coalinga. 701 Comment
  UCR122186  Layia platyglossa George K. Helmkamp, E. A. Helmkamp 2002-4-23 7566 Fresno Central Valley; San Joaquin Valley, along CA Hwy 180, 10.8 mi west of CA Hwy 145 107 Comment
Read comments
Jan 8 2013
  SBBG128852  Heliotropium europaeum G. K. Helmkamp, E. A. Helmkamp 2011-10-8 18368 Glenn CA-45, 1.2 mi N of Princeton 44 Comment
  UCR232665  Cynodon dactylon George K. Helmkamp, E. A. Helmkamp 2011-10-8 18373 Glenn Northern Sacramento Valley, along CA-45, 1.2 miles north of Princeton 44 Comment
  UCR233416  Cyperus difformis George K. Helmkamp, E. A. Helmkamp 2011-10-8 18384 Glenn Northern Sacramento Valley, Co. Road 61 (Riz Rd.), 2.6 miles east of CA-45 and at the junction with Co. Road V, 8.26 mi. SE (124 deg. ) of Willows 26 Comment
  UCR233431  Ammannia coccinea George K. Helmkamp, E. A. Helmkamp 2011-10-8 18383 Glenn Northern Sacramento Valley, Co. Road 61 (Riz Rd.), 2.6 miles east of CA-45 and at the junction with Co. Road V, 8.26 mi. SE (124 deg. ) of Willows 26 Comment
  UC1787277  Crepis capillaris G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6998 Humboldt North coastal strand.: North spit of Samoa Peninsula, 0.5 mi N of CA-225 bridge over Humboldt Bay. 6 Comment
  UC1787278  Crepis capillaris G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6992 Humboldt North coast redwood area; CA-36, along the Van Duzen R. 19.6 mi E of US-101 (W of Bar W rd). 137 Comment
  UCR121764  Cakile maritima George K. Helmkamp, E. A. Helmkamp 2001-7-8 7025 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  UCR123955  Cystopteris fragilis George K. Helmkamp, E. A. Helmkamp 2001-7-8 6970 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  UCR123962  Vancouveria hexandra George K. Helmkamp, E. A. Helmkamp 2001-7-8 6968 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  RSA489396  Physalis crassifolia George K. Helmkamp 1988-2-28 s.n. Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98. [10 km cell; PG-1N, 0E] 152 Comment
  SD143953  Atriplex serenana G. K. Helmkamp, E. Helmkamp 1998-1-24 2621 Imperial North end of Calipatria at corner of Young Road and Highway 111. Comment
  SD144056  Chaenactis carphoclinia var. carphoclinia G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2897 Imperial 4.7 mi. N of Winterhaven on Picacho Rd & 1 mi. NW of the All-American Canal. 75 Comment
  SD144073  Ambrosia dumosa G. K. Helmkamp, E. Helmkamp 1998-1-23 2562 Imperial On the W side of Hwy 86, 18.8 mi NW of Westmoreland. Comment
  SD144115  Hilaria rigida G. K. Helmkamp, E. Helmkamp 1998-1-24 Imperial Gravel Rd S of Hwy I-8. Rocky hills at W edge of Fort Yuma Indian Reservation 60 Comment
  SD144482  Cryptantha angustifolia G. K. Helmkamp, E. Helmkamp 1998-1-28 2633 Imperial 6 mi WNW of Ocotillo on Hwy S-2. 152 Comment
  UCR100794  Mohavea confertiflora George K. Helmkamp, E. A. Helmkamp 1998-3-18 2887 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100799  Chorizanthe corrugata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2890 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100801  Mentzelia involucrata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2893 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100856  Dalea mollis George K. Helmkamp, E. A. Helmkamp 1998-3-18 2872 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR103353  Cryptantha maritima George K. Helmkamp, E. Helmkamp 1998-1-24 2595 Imperial Sonoran (Colorado) Desert, Gravel Rd south of Hwy I-8. Rocky hills at W edge of Fort Yuma Indian Reservation. 61 Comment
  UCR103600  Cryptantha maritima George K. Helmkamp, E. A. Helmkamp 1998-3-19 2936 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103616  Euphorbia setiloba George K. Helmkamp, E. Helmkamp 1998-1-24 2580 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR103631  Dalea mollissima George K. Helmkamp, E. A. Helmkamp 1998-3-19 2917 Imperial Sonoran (Colorado) Desert, along Hwy S-24 between the All-American Canal & the Colorado River, 2.0 mi. north of Laguna Dam. 76 Comment
  UCR103637  Ditaxis neomexicana George K. Helmkamp, E. Helmkamp 1998-1-24 2604 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103638  Euphorbia setiloba George K. Helmkamp, E. Helmkamp 1998-1-24 2603 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103641  Eriogonum deflexum George K. Helmkamp, E. Helmkamp 1998-1-24 2617 Imperial Sonoran (Colorado) Desert, Calif. Hwy 78, 2 mi. NE of Glamis 168 Comment
  UCR103647  Castela emoryi George K. Helmkamp, E. Helmkamp 1998-1-28 2629 Imperial Sonoran (Colorado) Desert, Near the corner of Coyote Rd & Calif. Hwy 98, c. 5 mi. SE of Ocotillo. (Very near or at the Crucifixion Thorn Natural Area) 107 Comment
  UCR103648  Encelia frutescens George K. Helmkamp, E. Helmkamp 1998-1-28 2628 Imperial Sonoran (Colorado) Desert, West Mesa. Jeep trail south of Calif. Hwy 98 along the Mexican border, 2.2 mi. west of Mt. Signal Road. 67 Comment
  UCR104853  Perityle emoryi George K. Helmkamp 1998-1-17 2553 Imperial Salton Sea, c. 2 mi NW of Salton City at the end of Treadwell St. -61 Comment
  UCR104876  Hilaria rigida George K. Helmkamp, E. Helmkamp 1998-1-24 2596 Imperial Sonoran (Colorado) Desert, Gravel Rd south of Hwy I-8. Rocky hills at W edge of Fort Yuma Indian Reservation. 61 Comment
  UCR120519  Baileya pleniradiata George K. Helmkamp, E. A. Helmkamp 2001-3-17 6276 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120523  Cryptantha angustifolia George K. Helmkamp, E. A. Helmkamp 2001-3-17 6273 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR50456  Monoptilon bellioides George K. Helmkamp 1988-2-28 30 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50980  Calycoseris wrightii George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR59722  Croton californicus var. mohavensis George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  UCR59843  Cressa truxillensis var. vallicola George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  UCR71846  Bacopa monnieri George K. Helmkamp 1992-4-7 92 2 Imperial Sonoran (Colorado) Desert, Colorado River 0.5 mi downstream from Gilmore's Camp (about 1.5 mi south of Walter's Camp where the old channel meets the main river) 100 Comment
  CLARK-A1045-39  Mirabilis bigelovii var. retrorsa George K. Helmkamp 1977-4-23 Inyo Panamint Range west edge of Panamint Mountains; in a dry wash; ; Emigrant Pass 7.5' Q 1066 Comment
  CLARK-A1045-48  Artemisia spinescens George K. Helmkamp 1977-4-23 Inyo Panamint Mountains dry flat south of Emigrant Pass; 1219 Comment
  CLARK-A1045-54  Gilia cana subsp. triceps George K. Helmkamp 1977-4-24 Inyo Panamint Mountains north of Townes Pass; dry slope north of Pass; ; Panamint Butte, 7.5' 1219 Comment
  OBI43758  Isocoma acradenia var. acradenia G. K. Helmkamp 1986-9-28 s.n. Inyo N edge of Tecop Hot Springs beside Hwy 127 427 Comment
  OBI43762  Atriplex parryi G. K. Helmkamp 1986-9-28 s.n. Inyo 0.4 mi N of Tecopa 427 Comment
  RSA615626  Eriogonum panamintense George K. Helmkamp 1997-9-30 2467 Inyo 6.1 mi. N of CA hwy 168 on White Mtn Rd. 2622 Comment
  RSA615630  Camissonia boothii subsp. intermedia George K. Helmkamp 1997-9-30 2452 Inyo White Mountains. 8 miles East of US 395 on CA Highway 168 out of Big Pine. 2073 Comment
  SD197739  Atriplex triangularis G. K. Helmkamp 1973-10-27 Inyo Owens Valley; Owens River in Pleasant Valley. 1372 Comment
  UCD120975  Tiquilia nuttallii G. K. Helmkamp; E. A. Helmkamp 1993-6-16 158 Inyo Owens Valley. 2 mi east of Pleasant Valley Campground along Chalk Bluff Road, NW of Bishop. 1280 Comment
  UCR121931  Stellaria longipes George K. Helmkamp, E. A. Helmkamp 2000-7-19 5933 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121937  Ptilagrostis kingii George K. Helmkamp, E. A. Helmkamp 2000-7-19 5925 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121938  Pedicularis attollens George K. Helmkamp, E. A. Helmkamp 2000-7-19 5924 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121941  Antennaria corymbosa George K. Helmkamp, E. A. Helmkamp 2000-7-19 5921 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121947  Carex pellita George K. Helmkamp, E. A. Helmkamp 2000-7-19 5915 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121948  Castilleja miniata var. miniata George K. Helmkamp, E. A. Helmkamp 2000-7-19 5913 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR134474  Rosa woodsii var. ultramontana George K. Helmkamp, E. A. Helmkamp 1998-8-10 4259 Inyo Eastern Sierra Nevada Mountains, along Big Pine Creek 12 mi west of Big Pine along Glacier Lodge Rd. 2317 Comment
  UCR134479  Erigeron aphanactis George K. Helmkamp, E. A. Helmkamp 1998-8-11 4283 Inyo White Mountains, along White Mtn. Rd. and west of the Bristlecone Pine boundary; 0.5 miles northwest of Shulman Grove 3079 Comment
  UCR134490  Tetradymia canescens George K. Helmkamp, E. A. Helmkamp 1998-8-12 4367 Inyo Sierra Nevada Mountains, Independence Creek near Seven Pines and along Onion Valley Road 1799 Comment
  UCR13837  Cleomella plocasperma George K. Helmkamp 1973-6-15 s.n. Inyo Owens Valley, Owens River at Pleasant Valley, near Mono county line 1372 Comment
  UCR14062  Pyrrocoma racemosa var. sessiliflora George K. Helmkamp 1973-10-27 s.n. Inyo Owens Valley, Owens River in Pleasant Valley, northwest of Bishop. 1372 Comment
  UCR14510  Thelypodium laciniatum George K. Helmkamp 1974-6-8 s.n. Inyo Sierra Nevada Mtns, Beside US Hwy 395, north of Bishop 1524 Comment
  UCR14527  Sporobolus airoides George K. Helmkamp 1974-6-8 s.n. Inyo Owens Valley, Pleasant Valley along the Owens River, 9 mi NW of Bishop 1311 Comment
  UCR15397  Penstemon fruticiformis subsp. fruticiformis George K. Helmkamp 1977-4-23 s.n. Inyo Northern Mojave Desert, Panamint Mtns., east of Townes Pass 1220 Comment
  UCR15540  Camissonia claviformis subsp. lancifolia George K. Helmkamp 1978-5-28 s.n. Inyo Owens Valley, Beside the Owens River at Pleasant Valley 1311 Comment
  UCR17699  Gnaphalium luteoalbum George K. Helmkamp 1973-6-13 s.n. Inyo Owens Valley, Owens River near Pleasant Valley 1372 Comment
  UCR78039  Atriplex prostrata George K. Helmkamp 1993-10-7 39- 06 Inyo Owens Valley, Pleasant Valley, edge of Owens River 1254 Comment
  UCR78043  Iva nevadensis George K. Helmkamp 1993-10-7 39- 11 Inyo Owens Valley, Pleasant Valley, edge of Owens River 1254 Comment
  UCR90211  Mentzelia obscura George K. Helmkamp 1995-3-26 s.n. Inyo Northern Mojave Desert, at turnoff from Death Valley Road to Ubehebe Crater 600 Comment
  UCR99900  Helenium bigelovii George K. Helmkamp 1997-9-20 2422 Inyo Onion Valley in the Sierra Nevada Mtns. west of Independence 2805 Comment
  UCR99909  Orobanche corymbosa George K. Helmkamp 1997-9-30 2459 Inyo White Mtns., About 8 mi. east of US Hwy 395 on Calif. Hwy 168 out of Big Pine 2104 Comment
  UCR99926  Ericameria nauseosa var. bernardina George K. Helmkamp 1997-9-29 2440 Inyo Sierra Nevada Mountains, Onion Valley Road, 7.9 mi west of Hwy US-395 from Independence 2159 Comment
  UCR99931  Eriogonum gracile var. gracile George K. Helmkamp 1997-9-29 2448 Inyo Sierra Nevada Mountains, Onion Valley Road, 7.9 mi west of Hwy US-395 from Independence 2159 Comment
  CLARK-A1045-1016  Gilia cana subsp. triceps George K. Helmkamp 1977-4-24 Inyo Panamint Mountains north of Townes Pass; dry slope, ; Panamint Butte, 7.5' Q 1219 Comment
  CLARK-A1045-28  Monoptilon bellioides George K. Helmkamp 1977-4-24 Inyo Panamint Mountains east of Townes Pass; 1462 Comment
  CLARK-A1045-31  Coldenia plicata George K. Helmkamp 1977-4-24 Inyo 15 miles north of Trona; Creosote Bush scrub Comment
  CLARK-A1045-367  Eriogonum pusillum George K. Helmkamp 1977-6-12 F Kern Kelso Creek 5 miles southeast of Weldon; ; Onyx 7.5'Q 1219 Comment
  CLARK-A1045-863  Eriastrum sparsiflorum George K. Helmkamp 1977-6-11 Kern Kern River Onyx 7.5'Q Comment
  CLARK-A1045-990  Chorizanthe thurberi George K. Helmkamp 1977-6-11 B Kern Freeman Canyon Junction of State Highway 178 and 14; ; Freeman Junction 7.5'Q Comment
  RSA0095183  Gilia brecciarum subsp. brecciarum George K. Helmkamp, E. A. Helmkamp 2001-4-26 6485 Kern East foothills, Tehachapi Mountains: Tehachapi Willow Springs Rd., 2.2 miles S of Highline Rd. 1372 Comment
  RSA613927  Layia platyglossa subsp. platyglossa George K. Helmkamp, E. A. Helmkamp 1998-4-9 3257 Kern 14 mi. NE of Taft; along Tupman Rd just north of its intersection w/ Calif. hwy 199 (W of the outlet canal.) 91 Comment
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Jul 8 2011
  SD148097  Gilia cana subsp. speciosa G. K. Helmkamp, E. A. Helmkamp 2001-4-27 6514 Kern Tehachapi Mountains; Hart Flat turnoff from CA-58. 883 Comment
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Dec 21 2016
  SD148151  Trifolium willdenovii G. K. helmkamp, E. A. Helmkamp 2001-4-27 6506 Kern Tehachapi Mountains, Hart Flat turnoff from CA-58, on mounds of soil deposited at roadside 883 Comment
  SEINET235061  Cryptantha flaccida G. K. Helmkamp, E. A. Helmkamp 1998-5-13 3549 Kern Greenhorn Mtns Southern Sierra Nevada: 6.5 mi. SW of Woody along Bakerfield/Glennville Rd (NE of Bakersfield). Near Hor 396 Comment
  UCR101066  Plagiobothrys canescens George K. Helmkamp, E. A. Helmkamp 1998-4-9 3256 Kern 14 mi. NE of Taft; along Tupman Rd just north of its intersection w/ Calif. hwy 199 (W of the outlet canal). 91 Comment
  UCR102506  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 1998-4-9 3266 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR102510  Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 1998-4-9 3270 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR102521  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 1997-3-7 1371 Kern SE of Maricopa along Western Minerals Rd near Bitter Creek 427 Comment
  UCR106066  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 1997-3-7 1380 Kern San Emigdio Ranch, SE portion 945 Comment
  UCR122561  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2001-4-27 6552 Kern Temblor Range, CA Hwy 58, 1.1 mi SW of the San Luis Obispo Co. line 793 Comment
  UCR129534  Lupinus microcarpus var. microcarpus George K. Helmkamp, E. A. Helmkamp 1998-5-21 4037 Kern Western Mojave Desert, South base, Tehachapi Mtns., 4.0 mi north of Calif. Hwy 138 (Lancaster Rd) on 300th St. West 1006 Comment
  UCR130235  Camissonia claviformis subsp. claviformis George K. Helmkamp, E. A. Helmkamp 2001-4-27 6517 Kern Tehachapi Mtns, Hart Flat turnoff from Calif. Hwy 58 884 Comment
  UCR130245  Mentzelia veatchiana George K. Helmkamp, E. A. Helmkamp 2001-4-27 6500 Kern Tehachapi Mtns, Hart Flat turnoff from Calif. Hwy 58 884 Comment
  UCR130383  Lupinus albifrons George K. Helmkamp, E. A. Helmkamp 1998-5-21 4030 Kern Western Mojave Desert, South base, Tehachapi Mtns., 4.0 mi north of Calif. Hwy 138 (Lancaster Rd) on 300th St. West 1006 Comment
  UCR130949  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 1998-5-13 3560 Kern Southern Sierra Nevada Mtns., Greenhorn Mtns. Foothills, 6.5 mi. SW of Woody along Bakersfield/Glennville Rd (NE of Bakersfield). Near Horse Canyon 396 Comment
  UCR130952  Clarkia cylindrica George K. Helmkamp, E. A. Helmkamp 1998-5-13 3552 Kern Southern Sierra Nevada Mtns., Greenhorn Mtns. Foothills, 6.5 mi. SW of Woody along Bakersfield/Glennville Rd (NE of Bakersfield). Near Horse Canyon 396 Comment
  UCR130965  Holocarpha heermannii George K. Helmkamp, E. A. Helmkamp 1998-5-13 3546 Kern Southern Sierra Nevada Mtns., Greenhorn Mtns. Foothills, 6.5 mi. SW of Woody along Bakersfield/Glennville Rd (NE of Bakersfield). Near Horse Canyon 396 Comment
  UCR130971  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 1998-5-13 3541 Kern Southern Sierra Nevada Mtns., Greenhorn Mtns. Foothills, 6.5 mi. SW of Woody along Bakersfield/Glennville Rd (NE of Bakersfield). Near Horse Canyon 396 Comment
  UCR157785  Lotus procumbens George K. Helmkamp, E. A. Helmkamp 1998-6-29 4179 Kern Tehachapi Mountains, Tehachapi Mountain Park, 4.2 miles SW of Highline Road along Water Canyon Road 1768 Comment
  UCR157987  Euphorbia albomarginata George K. Helmkamp, E. A. Helmkamp 1998-6-29 4143 Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 Comment
  UCR24975  Lepidium appelianum George K. Helmkamp 1981-8-6 s.n. Kern Pinon Pines Camp near Mt. Pinos. [Lake of the Woods] Near the junction of Cuddy Valley Rd. and Lockwood Valley Rd 1677 Comment
  UCR26760  Lupinus benthamii George K. Helmkamp 1982-5-14 s.n. Kern Tehachapi Mtns., 2 mi south of Gorman, along Gorman Post Road 1223 Comment
  RSA518563  Eriogonum nudum var. nudum George K. Helmkamp 1990-9-23 G- 11 Lassen N of Ravendale 1677 Comment
  SD132453  Eriogonum nudum G. Helmkamp 1990-9-23 G 11 Lassen Sagebrush scrub area N of Ravendale. Riparian area beside small creek 1676 Comment
  UCR67380  Malvella leprosa George K. Helmkamp 1990-9-23 A- 8 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UCR67389  Sarcobatus vermiculatus George K. Helmkamp 1990-9-23 D- 5 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  SEINET2056591 Image available Penstemon centranthifolius George K. Helmkamp, E. A. Helmkamp 1998-5-21 4051 Los Angeles Western Mojave Desert: Junction of Munz Ranch Rd and Lake Elizabeth Rd N of Lake Elizabeth. 1098 Comment
  UCR102527  Camissonia campestris George K. Helmkamp 1997-3-6 1341 Los Angeles Western Mojave Desert, west of Lancaster at 125th St. & Calif. Hwy 138 762 Comment
  UCR102528  Tropidocarpum gracile George K. Helmkamp 1997-3-6 1342 Los Angeles Western Mojave Desert, west of Lancaster at 125th St. & Calif. Hwy 138 762 Comment
  UCR122485  Ericameria cooperi George K. Helmkamp, E. A. Helmkamp 2001-5-2 6659 Los Angeles Western Mojave Desert, Antelope Valley, 0.1 mi west of Calif. Hwy 138 on Ave. W, then 0.3 mi S on [180th St. East] dirt road 976 Comment
  UCR14467  Lupinus peirsonii George K. Helmkamp 1974-6-2 s.n. Los Angeles San Gabriel Mtns, near summit of Calif. Hwy 39 2012 Comment
  UCR26759  Lupinus microcarpus George K. Helmkamp 1982-5-14 s.n. Los Angeles Western Mojave Desert, Calif. Hwy 138, [near Neenach School, Antelope Valley] 2.5 mi. east of Osos Pumping Station turnoff 915 Comment
  UCR122191  Phlox gracilis George K. Helmkamp, E. A. Helmkamp 2002-4-23 7512 Madera Western Sierra Nevada foothills, Bass Lake Road, 1 mile southeast of the junction with CA Hwy 41, north of Oakhurst 915 Comment
  UCR122197  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2002-4-23 7517 Madera Western Sierra Nevada Foothills, along Belleview Rd (Rd 208) 1.2 mi west of Bear Lake Rd (Rd 211), west of Indian Springs 213 Comment
  UCR122198  Aira caryophyllea George K. Helmkamp, E. A. Helmkamp 2002-4-23 7516 Madera Western Sierra Nevada Foothills, along Belleview Rd (Rd 208) 1.2 mi west of Bear Lake Rd (Rd 211), west of Indian Springs 213 Comment
  UCR122203  Camissonia strigulosa George K. Helmkamp, E. A. Helmkamp 2002-4-23 7522 Madera Western Sierra Nevada Foothills, along Belleview Rd (Rd 208) 1.2 mi west of Bear Lake Rd (Rd 211), west of Indian Springs 213 Comment
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Jul 7 2020
  UCR122425  Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 2002-4-24 7591 Madera Western Sierra Nevada foothills, Auberry Rd (Rd 200/North Fork Rd.) 5.0 mi south of North Fork 503 Comment
  UCR122661  Carex alma George K. Helmkamp, E. A. Helmkamp 2002-4-23 7509 Madera Western Sierra Nevada foothills, Bass Lake Road, 2.2 miles southeast of the junction with CA Hwy 41 976 Comment
  UCR122738  Dodecatheon clevelandii subsp. patulum George K. Helmkamp, E. A. Helmkamp 2002-4-23 7598 Madera Western Sierra Nevada foothills, Bass Lake Road, 1 mile southeast of the junction with CA Hwy 41, north of Oakhurst 915 Comment
  UCR18564  Solanum americanum George K. Helmkamp 1974-10-18 s.n. Madera Manzanita Lake, at the parking lot Comment
  CLARK-A1045-1217  Calycanthus occidentalis George K. Helmkamp 1977-8-3 Mariposa Yosemite National Park at the diversion dam; rocky river bank; ; El Capitan 7.5'Q 1158 Comment
  CLARK-A1045-1426  Senecio integerrimus var. exaltatus George K. Helmkamp 1977-8-5 Mariposa Sierra Nevada 2 miles east of Yosemite Creek on the way to Porcupine Flats; dry slope, coniferous forest; ; Yosemite Falls 7.5'Q 2682 Comment
  CLARK-A1045-1431  Eriogonum wrightii subsp. subscaposum George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada 2 miles east of Yosemite Creek on the way to Porcupine Flats; gravelly roadside bank; ; Yosemite Falls 7.5'Q 2682 Comment
  UCR87670  Hesperolinon micranthum George K. Helmkamp, E. A. Helmkamp 1995-6-21 95-5- 07 Mariposa Sierra Nevada Mtns. Foothills, roadside cut along CA Hwy 49 at Hell Hollow, 1.5 mi south of the Merced River crossing 579 Comment
  RSA614897  Torilis arvensis George K. Helmkamp, E. Helmkamp, A. Kerchner 1997-6-25 2109 Mendocino State Hwy 128, 1.5 mi. SE of Boonville, in Anderson Valley. 152 Comment
  RSA666716  Lupinus littoralis George K. Helmkamp 2000-6-18 5754 Mendocino Glass Beach at Fort Bragg. 9 Comment
  SD224983  Zeltnera muehlenbergii G. K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2113 Mendocino State Hwy 128, 1.5 mi. SE of Boonville, in Anderson Valley. 152 Comment
  SEINET273100  Stachys ajugoides var. rigida G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1997-6-26 2153 Mendocino Fort Bragg: Open disturbed soil beside Glass Beach; with many introduced berry bushes and grasses. 6 Comment
  UCR102551  Eriophyllum lanatum var. arachnoideum George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2104 Mendocino State Hwy 128, 1.5 mi. SE of Boonville, in Anderson Valley 152 Comment
  UCR102557  Acer macrophyllum George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2110 Mendocino State Hwy 128, 1.5 mi. SE of Boonville, in Anderson Valley 152 Comment
  UCR102558  Torilis arvensis George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2109 Mendocino State Hwy 128, 1.5 mi. SE of Boonville, in Anderson Valley 152 Comment
  UCR103949  Polystichum munitum George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2127 Mendocino North Coast Range, Anderson Valley, Calif. Hwy 128, NW of Boonville 91 Comment
  UCR106475  Aquilegia formosa George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2178 Mendocino North Coast, along the Navarro River, 7 mi east of US-1. 30 Comment
  UCR121380  Stachys rigida var. rigida George K. Helmkamp, E. A. Helmkamp 2000-6-19 5766 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR121496  Whipplea modesta George K. Helmkamp, E. A. Helmkamp 2000-6-19 5770 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR121503  Centaurium davyi George K. Helmkamp, E. A. Helmkamp 2000-6-19 5795 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR131902  Rubus discolor George K. Helmkamp, E. A. Helmkamp 2000-6-18 5736 Mendocino North Coast, Glass Beach at Fort Bragg 9 Comment
  UCR132124  Oxalis rubra George K. Helmkamp, E. A. Helmkamp 2000-6-18 5724 Mendocino North Coast, Glass Beach, Fort Bragg 9 Comment
  UCR132129  Rorippa nasturtium-aquaticum George K. Helmkamp, E. A. Helmkamp 2000-6-18 5718 Mendocino North Coast, Glass Beach, Fort Bragg 9 Comment
  UCR132132  Sanicula laciniata George K. Helmkamp, E. A. Helmkamp 2000-6-18 5708 Mendocino North Coast, along Calif. Hwy 128, approximately 10 mi east of the coast 274 Comment
  UCR64882  Artemisia tridentata George K. Helmkamp 1990-9-23 H- 4 Modoc US Hwy 395, 13 mi north of Likely 1345 Comment
  UCR67433A  Juncus saximontanus George K. Helmkamp 1990-9-23 J- 12 Modoc Warner Mtns, Goose Lake, within 0.1 mi of the Oregon border 1476 Comment
  UCR67443  Agrostis scabra George K. Helmkamp 1990-9-23 I- 15 Modoc Warner Mtns, Goose Lake, within 0.1 mi of the Oregon border 1476 Comment
  UCR67444  Echinochloa crus-galli George K. Helmkamp 1990-9-23 I- 25 Modoc Warner Mtns, Goose Lake, within 0.1 mi of the Oregon border 1476 Comment
  CAS-BOT-BC192385  Deschampsia cespitosa subsp. cespitosa G. Helmkamp; E. Helmkamp 1997-9-11 2385 Mono Along highway CA-120 0.5 miles N of Tioga Pass 2956 Comment
  CLARK-A1045-1041  Nama rothrockii George K. Helmkamp 1977-7-3 Mono Long Valley US Highway 395; June Lake 7.5'Q Comment
  CLARK-A1045-1058  Alnus tenuifolia George K. Helmkamp 1977-9-1 IV Mono Antelope Valley along River, one mile north of Coleville; ; Coleville 7.5'Q 1676 Comment
  CLARK-A1045-1084  Tanacetum potentilloides George K. Helmkamp 1979-6-12 Mono Owens River alkaline flat near River, 4.5 miles south of Arcularius Ranch; ; Whitmore Hot Springs 7.5'Q 2133 Comment
  CLARK-A1045-1234  Navarretia breweri George K. Helmkamp 1978-5-30 Mono Sierra Nevada near Conway Summit, along US Highway 395; Lundy 7.5'Q Comment
  OBI39252  Carex lenticularis G. K. Helmkamp 1985-8-23 885 -39 Mono Mammoth Lakes, edge of Lake Mamie 2591 Comment
  OBI40080  Carex praegracilis G. K. Helmkamp 1985-8-23 885 -41 Mono Mammoth Lakes, edge of Lake Mamie 2591 Comment
  RSA519026  Crepis acuminata George K. Helmkamp 1990-8-2 s.n. Mono Between Mammoth and Lake Mary. 2591 Comment
  RSA667116  Lupinus lepidus var. confertus George K. Helmkamp 1997-9-10 2323 Mono 4.9 mi. SE of CA hwy 120 on Sagehen Meadows Rd. 2591 Comment
  SD143870  Monardella odoratissima G. E. Helmkamp 1997-9-11 2384 Mono Along highway CA-120 0.5 miles N of Tioga Pass; Nunatak meadow area 2956 Comment
  SD148221  Packera cana G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6813 Mono Virginia Lakes Road, 2.4 miles from U. S. 395. 2683 Comment
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Nov 9 2020
  SD232676  Astragalus iodanthus var. iodanthus G. Helmkamp 1994-5-23 99 1 Mono Along highway US-89, 1 mile south of the Alpine County line. 2194 Comment
  UC1787282  Symphyotrichum spathulatum G. K. Helmkamp 1999-10-16 5321 Mono Sierra Nevada Mountains; Along Owens River, 0.6 mi NW of Benton's Crossing. 2118 Comment
  UCD101417  Rumex paucifolius G. K. Helmkamp; E. A. Helmkamp 1998-8-10 4338 Mono White Mountains. Campito Meadow, west of White Mountain Road at Poison Creek. 1003 Comment
  UCR102572  Polygonum bistortoides George K. Helmkamp, E. A. Helmkamp 1997-9-11 2359 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR102581  Atriplex George K. Helmkamp, E. A. Helmkamp 1997-9-10 2349 Mono Eastern Sierra/ Great Basin, River Spring Lakes, 3.1 mi. NE of Calif. Hwy 120 on River Springs Rd 1979 Comment
  UCR102596  Agoseris monticola George K. Helmkamp, E. A. Helmkamp 1997-9-11 2379 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR102606  Horkelia fusca subsp. parviflora George K. Helmkamp, E. A. Helmkamp 1997-9-11 2360 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR102610  Eriastrum wilcoxii George K. Helmkamp, E. A. Helmkamp 1997-9-12 2416 Mono River Springs Lake, 3.1 mi. NE of Calif. hwy 120 on River Springs Rd. 1997 Comment
  UCR103541  Mimulus mephiticus George K. Helmkamp, E. A. Helmkamp 1997-9-12 2405 Mono Along Calif. Hwy 120, 7.5 mi east of US Hwy 395 2125 Comment
  UCR114347  Carex integra George K. Helmkamp, E. A. Helmkamp 1997-9-8 2269 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR114348  Trisetum projectum George K. Helmkamp, E. A. Helmkamp 1997-9-8 2268 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR114374  Alnus incana subsp. tenuifolia George K. Helmkamp, E. A. Helmkamp 1997-9-8 2271 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR114379  Angelica lineariloba George K. Helmkamp, E. A. Helmkamp 1997-9-8 2249 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR115823  Monardella glauca George K. Helmkamp, E. A. Helmkamp 2000-7-18 5861 Mono Eastern Sierra Nevada Mountains, Humboldt-Toiyabe National Forest, 5.1 mi west of US Hwy 395 at Conway Summit, east of Trumbull Lake, on Virginia Lake Road 2927 Comment
  UCR115853  Senecio integerrimus var. exaltatus George K. Helmkamp, E. A. Helmkamp 2000-7-18 5853 A Mono Eastern Sierra Nevada Mountains, Humboldt-Toiyabe National Forest, 5.1 mi west of US Hwy 395 at Conway Summit, east of Trumbull Lake, on Virginia Lake Road 2927 Comment
  UCR121735  Astragalus purshii var. purshii George K. Helmkamp, E. A. Helmkamp 2000-7-19 5946 Mono Sierra Nevada Mountains, McGee Creek Rd about 4 mi SW of US-395 2470 Comment
  UCR121745  Artemisia ludoviciana George K. Helmkamp, Elizabeth Helmkamp 2000-7-19 5908 Mono Eastern Sierra Nevada Mountains, Rock Creek Lake Rd., 0.8 mi north of the Inyo Co. line 2896 Comment
  UCR122834  Eriogonum microthecum var. alpinum George K. Helmkamp, E. A. Helmkamp 2001-7-8 6824 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR123117  Lewisia pygmaea George K. Helmkamp, E. A. Helmkamp 1998-8-13 4402 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR123118  Juncus nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 1998-8-13 4413 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR123120  Horkelia fusca subsp. parviflora George K. Helmkamp, E. A. Helmkamp 1998-8-13 4412 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR123395  Calochortus leichtlinii George K. Helmkamp, E. A. Helmkamp 1998-8-13 4431 Mono Eastern Sierra Nevada Mountains, 0.3 mi south of Saddlebag Lake along Saddlebag Lake Rd, above Lee Vining Creek 2988 Comment
  UCR123464  Aster ascendens George K. Helmkamp, Elizabeth Helmkamp 1999-10-16 5321 Mono Sierra Nevada Mountains, Along Owens River, 0.6 mi NW of Benton's Crossing. 2119 Comment
  UCR129539  Lupinus argenteus var. meionanthus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6832 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR129544  Pinus contorta subsp. murrayana George K. Helmkamp, E. A. Helmkamp 2001-7-8 6834 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR129549  Penstemon rostriflorus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6827 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR129552  Descurainia californica George K. Helmkamp, E. A. Helmkamp 2001-7-8 6825 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR132154  Cleomella parviflora George K. Helmkamp, E. A. Helmkamp 1993-7-28 166 Mono Eastern Sierra Nevada /Owens Valley, Benton's Crossing of Owens River 2134 Comment
  UCR132159  Angelica lineariloba George K. Helmkamp, E. A. Helmkamp 1993-7-28 171 Mono Sierra Nevada Mountains, north-facing rock wall at Long Valley Dam of Lake Crowley 2134 Comment
  UCR133226  Eriogonum deflexum George K. Helmkamp 1993-10-7 40- 02 Mono Owens Valley, beside Benton's Crossing Road 2165 Comment
  UCR141107  Rorippa curvipes George K. Helmkamp, E. A. Helmkamp 1998-8-11 4322 Mono White Mountains, Campito Meadow, west of White Mountain Road at Poison Creek 3293 Comment
  UCR141108  Koeleria macrantha George K. Helmkamp, E. A. Helmkamp 1998-8-11 4334 B Mono White Mountains, Campito Meadow, west of White Mountain Road at Poison Creek 3293 Comment
  UCR143559  Lupinus polyphyllus var. burkei George K. Helmkamp, E. A. Helmkamp 2000-7-17 5837 Mono Sierra Nevada Mtns., W side of Lake Mary, SW of Mammoth Lakes 2720 Comment
  UCR14381  Penstemon floridus George K. Helmkamp 1974-7-27 s.n. Mono Along U.S. 395 at Lake Crowley. 2079 Comment
  UCR14486  Triglochin palustris George K. Helmkamp 1974-6-9 s.n. Mono Eastern Sierra/Owens Valley, Benton Crossing on Owens River 2134 Comment
  UCR15017  Gayophytum diffusum subsp. parviflorum George K. Helmkamp 1976-6-22 s.n. Mono Sierra Nevada Mtns, Mammoth Lakes 2409 Comment
  UCR15534  Oenothera tanacetifolia George K. Helmkamp 1978-5-29 s.n. Mono Along East Walker River, c. 5 mi south of Nevada border 1930 Comment
  UCR18614  Aster ascendens George K. Helmkamp 1974-10-13 s.n. Mono Owens Valley, Owens River streamside near the Arcularius Ranch, Cabin Area 2165 Comment
  UCR257891  Ambrosia acanthicarpa George K. Helmkamp, Amy Barnes 2014-8-27 23054 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 0.6 mile south of the junction with Big Springs Road 2360 Comment
  UCR257897  Grindelia hirsutula var. davyi George K. Helmkamp, Amy Barnes 2014-8-27 23066 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 4.7 miles west of the junction with CA-395 2040 Comment
  UCR257898  Verbascum thapsus George K. Helmkamp, Amy Barnes 2014-8-27 23065 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 4.7 miles west of the junction with CA-395 2040 Comment
  UCR274885  Linanthus nuttallii George K. Helmkamp 1974-7-27 s.n. Mono Owens Valley, Owens River, Big Springs 2195 Comment
  UCR275066  Juncus George K. Helmkamp 1974-7-27 s.n. Mono Owens Valley, Owens River, Big Springs 2195 Comment
  UCR51448  Barbarea orthoceras George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Big Spring, beside Owens River 2256 Comment
  UCR51457  Thelypodium crispum George K. Helmkamp 1987-6-17 s.n. Mono Owens River, 0.5 mi downstream from Benton Crossing 2070 Comment
  UCR51467  Potentilla biennis George K. Helmkamp 1987-6-17 s.n. Mono Eastern Sierra Nevada Mtns., Campground at canyon, W base of Glass Mountain, 5 miles east of Owens River 2256 Comment
  UCR51566  Deschampsia elongata George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Big Spring, beside Owens River 2256 Comment
  UCR51573  Trifolium cyathiferum George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Big Spring, beside Owens River 2256 Comment
  UCR51574  Astragalus lentiginosus George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Owens River, Brown's Camp at Benton Crossing 2073 Comment
  UCR57539  Carex kelloggii George K. Helmkamp 1989-8-1 s.n. Mono Sierra Nevada Mtns., West Walker River, at Hwy 395, 4 mi. south of Walker 1890 Comment
  UCR57543  Cryptantha ambigua George K. Helmkamp 1989-8-1 s.n. Mono Sierra Nevada Mtns., West Walker River, at Hwy 395, 4 mi. south of Walker 1890 Comment
  UCR57544  Agrostis scabra George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR58161  Senecio hydrophilus George K. Helmkamp 1989-8-1 s.n. Mono Eastern Sierra Nevada Mountains, US Hwy 395, just south of the summit of Devil's Gate Pass 2256 Comment
  UCR59472  Erigeron breweri var. breweri George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR59785  Trifolium wormskioldii George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR59788  Artemisia douglasiana George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR59981  Lupinus lepidus var. confertus George K. Helmkamp 1988-9-7 s.n. Mono Eastern Sierra Nevada Mountains, Hwy 395, 29 miles north of Inyo Co. line 2195 Comment
  UCR67439  Oenothera californica George K. Helmkamp 1990-8-3 s.n. Mono Owens Valley, Beside Owens River, 3 mi upstream from Benton Crossing 2134 Comment
  UCR82206  Chrysothamnus viscidiflorus George K. Helmkamp 1994-7-28 108- 4 Mono Owens Valley, O'Harrell Canyon, NW of Benton Crossing on the Owens River 2345 Comment
  UCR88220B  Eriogonum esmeraldense var. esmeraldense George K. Helmkamp 1995-9-21 1- 5 B Mono Sierra Nevada Mtns., south edge of Lake Mary, south of Lake Mary, Mammoth Lakes 2805 Comment
  UCR88279  Penstemon rostriflorus George K. Helmkamp 1995-9-21 1- 3 Mono Sierra Nevada Mtns., south edge of Lake Mary, south of Lake Mary, Mammoth Lakes 2805 Comment
  UCR95895  Cerastium glomeratum George K. Helmkamp 1996-9-26 1225 Mono Sierra Nevada Mtns, city of Mammoth Lakes 2470 Comment
  UCR95898  Hippuris vulgaris George K. Helmkamp 1996-9-26 1232 Mono Sierra Nevada Mtns, Twin Lakes north of city of Mammoth Lakes 2622 Comment
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Jan 17 2010
  OBI39255  Kelloggia galioides G. K. Helmkamp 1985-8-20 885 -10 Mono Along the Owens River at Big Springs campground, 7 airline mi NE of Mammoth Lakes, above Arcularius Ranch 2225 Comment
  OBI39258  Ericameria parryi var. aspera G. K. Helmkamp 1985-8-22 885 -31 Mono ca. 5 mi N of Mammoth turnoff on US Hwy 395 2438 Comment
  RSA0087288  Heuchera rubescens var. alpicola George K. Helmkamp 1990-8-3 s.n. Mono Sierra Nevada Mountains. Midway gondola stop up Mammoth Mountain. 2927 Comment
  RSA0129504  Arabis platysperma George K. Helmkamp 1990-8-2 s.n. Mono Between Mammoth and Lake Mary. 2591 Comment
  IRVC29061  Clarkia purpurea subsp. quadrivulnera G. K. Helmkamp, E. A. Helmkamp 2000-4-24 5483 A Monterey Nacimiento Rd. 12 mi N of Gorda and 3.8 mi E of CA-1. Central outer coast ranges. 549 Comment
  RSA709729  Plagiobothrys tenellus George K. Helmkamp, E. Helmkamp 2000-4-24 5515 Monterey Coast Ranges: Nacimiento-Ferguson Rd., (starts ca. 12 miles N of Gorda) 10.2 miles E of CA-1 at (Slickrock) Creek. 457 Comment
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Feb 13 2013
  SEINET10305731 Image available Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 2000-4-24 5549 Monterey [Inner South Coast Ranges]; Salinas Valley, 6 mi south of King City and 0.6 mi east of G-14 (Jolon Rd) on San Lucas Rd. 183 Comment
  SEINET7967480 Image available Leptosiphon parviflorus George K. Helmkamp, E. A. Helmkamp 2000-4-24 5576 a Monterey Salinas Valley 3.0 mi S. of Lockwood on Tule Canyon Road. 244 Comment
  SEINET7967497 Image available Leptosiphon liniflorus George K. Helmkamp, E. A. Helmkamp 1998-5-19 3838 Monterey Salinas Valley; 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCD103819  Acmispon americanus var. americanus G. K. Helmkamp; Elizabeth Helmkamp 2005-5-12 9452 Monterey Central Coast Ranges: 4 mi west of US-101 on Hwy CA-G18 in Hames Valley. 233 Comment
  UCR101784  Carduus tenuiflorus George K. Helmkamp, E. A. Helmkamp 1998-5-14 3660 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR103971  Sequoia sempervirens George K. Helmkamp, E. A. Helmkamp 1997-6-23 2094 Monterey Central Coast, small side tributary off Willow Creek [Los Burros] Rd., c. 1 mi. north of Gorda & c. 1.7 mi from US Hwy 1 274 Comment
  UCR103977  Polystichum imbricans subsp. curtum George K. Helmkamp, E. A. Helmkamp 1997-6-23 2092 Monterey Central Coast, small side tributary off Willow Creek [Los Burros] Rd., c. 1 mi. north of Gorda & c. 1.7 mi from US Hwy 1 274 Comment
  UCR103978  Hieracium argutum George K. Helmkamp, E. A. Helmkamp 1997-6-23 2090 Monterey Central Coast, small side tributary off Willow Creek [Los Burros] Rd., c. 1 mi. north of Gorda & c. 1.7 mi from US Hwy 1 274 Comment
  UCR118253  Trifolium microcephalum George K. Helmkamp, E. A. Helmkamp 2000-4-24 5511 Monterey Los Padres National Forest, Nacimiento Rd. (starts about 12 mi north of Gorda), 10.2 mi east of Calif. Hwy 1; at Sherlock Creek 595 Comment
  UCR118276  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2000-4-24 5529 Monterey South Coast Range, west end Salinas Valley; Nacimiento-Fergusson Rd., 1.5 miles west of Mission Rd. just south of Mission San Antonio 320 Comment
  UCR121916  Eriophyllum confertiflorum var. confertiflorum George K. Helmkamp, Elizabeth Helmkamp 2000-4-21 5428 Monterey Central Coast, Los Padres National Forest. Nacimiento-Ferguson Rd., 0.7 mi east of CA Hwy 1, c. 12 mi north of Gorda 549 Comment
  UCR122567  Stipa lepida George K. Helmkamp, E. A. Helmkamp 2000-4-21 5432 Monterey Central Coast, Los Padres National Forest. Nacimiento-Ferguson Rd., 0.7 mi east of CA Hwy 1, c. 12 mi north of Gorda 549 Comment
  UCR127074  Clarkia similis George K. Helmkamp, E. A. Helmkamp 1998-5-19 3827 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127079  Castilleja exserta subsp. exserta George K. Helmkamp, E. A. Helmkamp 1998-5-19 3835 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127135  Vulpia microstachys var. ciliata George K. Helmkamp, E. A. Helmkamp 1998-5-19 3826 Monterey Central Coast Ranges, Salinas Valley Quinado Cyn., 12 mi south of King City along (G-14) Jolon Road 412 Comment
  UCR130099  Phacelia distans George K. Helmkamp, E. A. Helmkamp 2000-4-24 5558 Monterey Inner South Coast Ranges, Salinas Valley, 6 miles south of King City and 0.6 mile east of G-14 (Jolon Rd) on San Lucas Rd. 183 Comment
  UCR130600  Castilleja latifolia George K. Helmkamp, E. A. Helmkamp 1999-5-21 4844 Monterey Santa Lucia Mtns./Central Coast, Willow Creek, north of Gorda beside Calif. Hwy 1 30 Comment
  UCR130616  Satureja douglasii George K. Helmkamp, E. A. Helmkamp 1999-5-21 4857 Monterey Santa Lucia Mountains, Willow Creek Rd 1.7 mi east of Calif. Hwy 1 north of Gorda 290 Comment
  UCR145540  Eucrypta chrysanthemifolia var. chrysanthemifolia George K. Helmkamp, E. A. Helmkamp 2000-4-24 5480 A Monterey Central Outer Coast Range, Nacimiento Road, 12 mi north of Gorda and 3.8 mi east of CA Hwy 1, ridge above Kirk Creek 305 Comment
  UCR145626  Selaginella bigelovii George K. Helmkamp, E. A. Helmkamp 2000-4-24 5490 Monterey Central Outer Coast Range, Nacimiento Road, 12 mi north of Gorda and 3.8 mi east of CA Hwy 1, ridge above Kirk Creek 305 Comment
  UCR15533  Epilobium canum subsp. canum George K. Helmkamp 1978-7-17 s.n. Monterey Pacific coast, Coastal bluff 10 mi south of Big Sur Comment
  UCR158821  Prunus ilicifolia subsp. ilicifolia George K. Helmkamp, E. A. Helmkamp 2005-5-12 9443 Monterey Central Coast Ranges, 8 mi west of US-101 on Calif. Highway G18 in Hames Valley 341 Comment
  UCR159379  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2005-5-12 9462 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  UCR159390  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2005-5-12 9451 Monterey Central Coast Ranges, 4 mi west of US-101 on Calif. Hwy G18 in Hames Valley 233 Comment
  UCR159430  Phalaris angusta George K. Helmkamp, E. A. Helmkamp 2005-5-12 9460 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  UCR160071  Castilleja latifolia George K. Helmkamp, E. A. Helmkamp 2005-6-5 9508 Monterey Central Coast, west edge of Santa Lucia Range, overlooking Pacific Ocean, 0.4 mi east of Calif. Hwy 1 along Los Burros Road 113 Comment
  UCR160556  Monardella villosa subsp. obispoensis George K. Helmkamp, E. A. Helmkamp 2005-6-5 9515 Monterey Central Coast, west edge of Santa Lucia Range, overlooking Pacific Ocean, 0.4 mi east of Calif. Hwy 1 along Los Burros Road 113 Comment
  UCR160760  Lotus scoparius var. scoparius George K. Helmkamp, E. A. Helmkamp 2005-6-5 9522 Monterey Outer Central Coast Ranges; Santa Lucia Range, 5.0 mi east of Calif. Hwy 1 along Los Burros Road 826 Comment
  UCR161657  Salvia mellifera George K. Helmkamp, E. A. Helmkamp 2005-5-17 9487 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  UCR161658  Stachys bullata George K. Helmkamp, E. A. Helmkamp 2005-5-17 9488 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  UCR67401  Centranthus ruber George K. Helmkamp 1990-9-5 s.n. Monterey Central Coast, 2 miles north of Gorda 46 Comment
  CAS-BOT-BC444015  Lupinus bicolor George K. Helmkamp; Elizabeth Helmkamp 2013-4-13 20325 Nevada Northern Sierra Nevada Mountains Foothills: Wolf Road, 1.6 miles northwest of its junction with CA-49. 123 Comment
  CHSC118010  Madia citriodora G. K Helmkamp; E. A Helmkamp 2008-9-18 14122 Nevada Foothills, northern Sierra Nevada Mountains. Tyler-Foote Road 5.0 miles northeat of the junction with CA-49. 777 Comment
  JEPS119431  Madia citrigracilis G. K. Helmkamp, E. A. Helmkamp 2011-7-17 17763 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 deg. ) of Peardale Comment
  JEPS119449  Madia elegans subsp. elegans George K. Helmkamp with E. A. Helmkamp 2011-5-26 17380 Nevada Northern Sierra Nevada Mountains Foothills: SE of Gras Valley near Rollins Reservoir dam, along CA-174 NNW of Colfax, just west of the bridge over Bear River. Comment
  JEPS119474  Madia glomerata George K. Helmkamp with E. A. Helmkamp 2011-7-26 17867 Nevada nSNH: along CA Hwy 20, 0.8 mi east of Bowman Lake Road, 1.23 mi NE of Emigrant Gap and 0.35 mi N of I-80. Comment
  RSA0012020  Chaenactis douglasii var. douglasii George K. Helmkamp, E. A. Helmkamp 2010-8-26 16829 Nevada South Fork Yuba River, Forest Route 85 (Fordyce Lake Rd) north of Hampshire Rocks Road and I-80, 1 mi. NNW (351 deg.) of Cisco. 1634 Comment
  RSA794870  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2011-6-2 17431 Nevada Along CA-20, 3.3 miles west of its junction with CA-49 in Grass Valley 627 Comment
  RSA795037  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2011-6-9 17527 Nevada Tyler Foote Crossing Road, 3.3 miles north of its junction with Grizzly Hill Road, NE of North Columbia near the Sierra Co. line/Middle Yuba River. 878 Comment
  RSA795038  Dichelostemma multiflorum George K. Helmkamp, E. A. Helmkamp 2011-6-9 17524 Nevada Tyler Foote Crossing Road, 3.3 miles north of its junction with Grizzly Hill Road, NE of North Columbia near the Sierra Co. line/Middle Yuba River 878 Comment
  RSA795041  Silene californica George K. Helmkamp, E. A. Helmkamp 2011-6-9 17528 Nevada Tyler Foote Crossing Road, 3.3 miles north of its junction with Grizzly Hill Road, NE of North Columbia near the Sierra Co. line/Middle Yuba River 878 Comment
  SBBG128648  Heuchera micrantha G. K. Helmkamp, E. A. Helmkamp 2011-6-9 17523 Nevada Tyler Foote Crossing Rd, 3.3 mi N of its jct with Grizzly Hill Rd, NE of N Columbia near the Sierra Co line/Middle Yuba River 878 Comment
  SD146336  Streptanthus tortuosus var. orbiculatus G. K. Helmkamp, E. A. Helmkamp 1999-6-30 5089 Nevada Northern Sierra Nevada Range: Tahoe Mat. Forest, Donner Pass Rd. (=Hwy 40), 2.2 mi. west of Lake Donner 1997 Comment
  SD212711  Ceanothus tomentosus G. K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10378 Nevada Cedarsong Road, 0.1 mile Northeast of Ca Highway 49 (Northwest of Nevada City) 637 Comment
  SD234983  Leptosiphon ciliatus G. K. Helmkamp, E. A. Helmkamp 2007-6-12 12339 Nevada Northern Sierra Nevada Mountains: Spaulding Lake Road, 0.3 mile north of its junction with Hwy CA-20 (Blue Canyon 7.5' Q) 1604 Comment
  SD239559  Tauschia hartwegii G. K. Helmkamp, E. A. Helmkamp 2011-6-9 17512 Nevada Northern Sierra Nevada Mountains Foothills: Tyler Foote Crossing Road, 3.0 miles north of its junction with Crizzly Hill Road, generally north of North Columbia (Pike 7.5'Q) 883 Comment
  SD239569  Symphyotrichum spathulatum var. yosemitanum George K. Helmkamp, E. A. Helmkamp 2007-8-1 12666 Nevada Northern Sierra Nevada Mountains: near Camp Spaulding Road 0.4 mile north of its junction with CA-20 (Blue Canyon 7.5'Q) 1573 Comment
  SD240779  Alisma triviale George K. Helmkamp, E. A. Helmkamp 2011-7-17 17795 Nevada Northern Sierra Nevada Mountains Foothills: You Bet Road just northeast of its junction with CA-174, 1.25 mi. east (91a^z) of Peardale (Chicago Park 7.5'Q) 778 Comment
  SD241167  Fragaria vesca George K. Helmkamp, E. A. Helmkamp 2011-6-9 17498 Nevada Northern Sierra Nevada Mountains Foothills: Tyler Foote Crossing Road, 1.6 miles north of its junction with Greizzly Hill Road, generally north of North Columbia (Pike 7.5'Q) 929 Comment
  SD241732  Symphyotrichum bracteolatum George K. Helmkamp, E. A. Helmkamp 2012-9-25 19936 Nevada Northern Sierra Nevada Mountains; Bowman Lake Road, 0.1 mile south of the bridge over the South Fork Yuba River (Blue Canyon 7.5'Q) 1424 Comment
  SD241741  Ericameria nauseosa var. speciosa George K. Helmkamp, E. A. Helmkamp 2012-9-25 19928 Nevada Northern Sierra Nevada Mountains: Bowman Lake Road, 1.2 miles north of CA-20, N of I-80 between Grass Valley and Truckee (Blue Canyon 7.5'Q) 1427 Comment
  SEINET238484 Image available Lotus nevadensis var. nevadensis G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1999-6-29 5035 Nevada Northern Sierra Nevada Range: N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon. 2134 Comment
  SEINET3246065 Image available Cercis occidentalis G. K. Helmkamp, E. A. Helmkamp 2007-1 11725 Nevada Foothills, Northern Sierra Nevada Mountains: just south of the crossing of CA-49 over the South Yuba River. 390 Comment
  SEINET4142654 Image available Rhamnus tomentella subsp. tomentella George K. Helmkamp, E. A. Helmkamp 2011-6-2 17414 Nevada Northern Sierra Nevada Mountain Foothills: Along CA-20, 1.5 miles W of junction with CA-49 in Grass Valley 727 Comment
  SEINET4560802  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2011-1 17783 Nevada Northern Sierra Nevada Mountain Foothills: You Bet Road just northeast of its junction with CA-174, 1.25 mi. east (91 degrees) of Peardale 778 Comment
  SEINET4560804  Fraxinus latifolia George K. Helmkamp, E. A. Helmkamp 2011-1 17760 Nevada Northern Sierra Nevada Mountains Foothills: You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 degrees) of Peardale 686 Comment
  SEINET7249151  Phalaris aquatica George K. Helmkamp, Elizabeth Helmkamp 2013-1 22114 Nevada Sierra Nevada Mountains Foothills: junction of Table Meadow Road and Combie Road, SE of Higgins Corner. 448 Comment
  UCD100613  Eriogonum nudum var. nudum G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11253 Nevada Northern Sierra Nevada Mtns, about 0.7 mile east of Donner Pass, along Donner Pass Road. 2041 Comment
  UCD101031  Rumex acetosella G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12613 Nevada Northern Sierra Nevada Mountains: Bowman Lake Road, 11.2 miles north of its junction with CA-20. 1793 Comment
  UCD117485  Arbutus menziesii G. K. Helmkamp; E. A. Helmkamp 2007-3-31 11728 Nevada Northern Sierra Nevada Mountains: Just south of the crossing of CA-49 over the South Yuba River. 390 Comment
  UCD127555  Ligusticum grayi G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12619 Nevada Northern Sierra Nevada Mountains: Bowman Lake Road, 9.9 miles north of its junction with CA-20. 1774 Comment
  UCD132410  Gamochaeta G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11227 Nevada Northern Sierra Nevada Mountains: just south of I-80 on Lake Valley Rd. 1755 Comment
  UCD134712  Pinus jeffreyi G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11263 Nevada Northern Sierra Nevada Mtns.: about 0.7 mile east of Donner Pass along Donner Pass Rd. 2041 Comment
  UCR121451  Phlox diffusa George K. Helmkamp, E. A. Helmkamp 1999-6-30 5076 Nevada Northern Sierra Nevada Range, Tahoe Nat. Forest, Donner Pass Rd. (=Hwy 40), 2.2 mi. west of Lake Donner. 1997 Comment
  UCR121457  Sanicula tuberosa George K. Helmkamp 1999-6-30 5101 Nevada Northern Sierra Nevada Range, Truckee, 1-2 mi. east of Donner Lake. 1540 Comment
  UCR121458  Lupinus polyphyllus var. burkei George K. Helmkamp 1999-6-30 5102 Nevada Northern Sierra Nevada Range, Truckee, 1-2 mi. east of Donner Lake. 1540 Comment
  UCR121472  Lepidium virginicum var. virginicum George K. Helmkamp, E. A. Helmkamp 1999-6-29 5044 Nevada Northern Sierra Nevada Range, Prosser Creek at Hobart Mills, c. 50-100 yards east of Calif. Hwy 89, NE of Lake Tahoe 1707 Comment
  UCR173343  Vicia villosa subsp. villosa George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10381 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173452  Jensia rammii George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10375 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
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Jan 8 2013
  UCR173527  Calochortus monophyllus George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10409 Nevada Northern Sierra Nevada Foothills, San Juan Ridge area at North Columbia, c. 9.3 mi. east of Calif. Hwy 49 884 Comment
  UCR173528  Hypochaeris glabra George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10376 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173587  Bromus carinatus George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10389 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173588  Scandix pecten-veneris George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10410 Nevada Northern Sierra Nevada Foothills, San Juan Ridge area at North Columbia, c. 9.3 mi. east of Calif. Hwy 49 884 Comment
  UCR176535  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2006-8-14 11225 Nevada Northern Sierra Nevada Mtns, just south of I-80 on Lake Valley Rd 1755 Comment
  UCR188870  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2007-3-31 11719 Nevada Foothills, Northern Sierra Nevada Mountains, along CA-49 at Lime Kiln Rd., 0.6 mi north of Cherry Creek Acres 549 Comment
  UCR189033  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2007-7-27 12605 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 11.2 miles north of its junction with CA-20 1793 Comment
  UCR189043  Anthoxanthum odoratum George K. Helmkamp, E. A. Helmkamp 2007-7-27 12597 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 3.9 miles north of its junction with CA-20; in the vicinity of Fuller Lake 1668 Comment
  UCR190159  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2007-8-1 12652 Nevada Northern Sierra Nevada Mountains, Soda Lake Road in the vicinity of Lake Van Norden, 0.2 mile south of Donner Pass Road 2073 Comment
  UCR190217  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2007-8-1 12667 Nevada Northern Sierra Nevada Mountains, near Camp Spaulding; along Lake Spaulding Road 0.4 mile north of its junction with CA-20 1573 Comment
  UCR190218  Trifolium pratense George K. Helmkamp, E. A. Helmkamp 2007-8-1 12669 Nevada Northern Sierra Nevada Mountains, near Camp Spaulding; along Lake Spaulding Road 0.4 mile north of its junction with CA-20 1573 Comment
  UCR190220  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2007-8-1 12671 Nevada Northern Sierra Nevada Mountains, near Camp Spaulding; along Lake Spaulding Road 0.4 mile north of its junction with CA-20 1573 Comment
  UCR193285  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2007-6-12 12354 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 2.9 miles north of its junction with Hwy CA-20; just north of the South Yuba River 1451 Comment
  UCR194870  Trientalis latifolia George K. Helmkamp, E. A. Helmkamp 2007-5-26 12117 Nevada Northern Sierra Nevada Mountains Foothills, along CA-49, 1.2 miles north of North San Juan 610 Comment
  UCR195164  Lupinus latifolius var. columbianus George K. Helmkamp, E. A. Helmkamp 2007-5-26 12092 Nevada Northern Sierra Nevada Mountains Foothills, along CA-49, 5.6 miles north of Nevada City 518 Comment
  UCR195169  Triteleia George K. Helmkamp, E. A. Helmkamp 2007-5-26 12113 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 1.0 mile northeast of CA-49 622 Comment
  UCR201930  Ribes roezlii var. roezlii George K. Helmkamp, E. A. Helmkamp 2008-8-20 14038 Nevada Northern Sierra Nevada Mountains, Donner Pass Road north of and parallel to US-80 beside South Yuba River and just east of Kingvale 1860 Comment
  UCR207030  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2009-5-28 14810 Nevada Sierra Nevada Mountains Foothills, along CA-49, 2.0 miles north of its junction with CA-20, north of Nevada City 780 Comment
  UCR230110  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2011-5-26 17382 Nevada Northern Sierra Nevada Mountains Foothills, SE of Grass Valley near Rollins Reservoir dam, along CA-174 NNW of Colfax, just west of the bridge over Bear River 613 Comment
  UCR232275  Chenopodium botrys George K. Helmkamp, E. A. Helmkamp 2011-9-30 18361 Nevada Northern Sierra Nevada Mountains, small, open flat along CA-20, 2.6 miles west of its junction with Lowell Hill Road 1581 Comment
  UCR232652  Centaurium muehlenbergii George K. Helmkamp, E. A. Helmkamp 2011-9-30 18349 Nevada Northern Sierra Nevada Mountains Foothills, Dutch Flat X Road (extension of Diggins Hill Road), 3.1 miles northeast of Dutch Flat and north of the Bear River Reservoir 854 Comment
  UCR233624  Asclepias cordifolia George K. Helmkamp, E. A. Helmkamp 2011-6-9 17507 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 3.0 miles north of its junction with Grizzly Hill Road, generally north of North Columbia 884 Comment
  UCR233629  Phacelia hastata var. hastata George K. Helmkamp, E. A. Helmkamp 2011-6-9 17509 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 3.0 miles north of its junction with Grizzly Hill Road, generally north of North Columbia 884 Comment
  UCR233632  Veronica serpyllifolia subsp. humifusa George K. Helmkamp, E. A. Helmkamp 2011-6-9 17499 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 1.6 miles north of its junction with Grizzly Hill Road, generally north of North Columbia 930 Comment
  UCR233642  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2011-7-17 17793 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road just northeast of its junction with CA-174, 1.25 mi. east (91 deg. ) of Peardale 778 Comment
  UCR233654  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2011-7-17 17778 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.0 miles east of its junction with CA-174, 0.6 mile west of the crossing over Greenhorn Creek, 2.7 miles ESE (95 deg. ) of Peardale 762 Comment
  UCR233659  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2011-7-17 17791 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road just northeast of its junction with CA-174, 1.25 mi. east (91 deg. ) of Peardale 778 Comment
  UCR233684  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 2010-8-26 16849 Nevada Northern Sierra Nevada Mountains, Donner Pass Road, 0.8 mile west of its junction with Hwy. I-80, 0.65 mi. NE (62 deg. ) of Kingvale 1921 Comment
  UCR234165  Lotus micranthus George K. Helmkamp, E. A. Helmkamp 2010-8-26 16854 Nevada Northern Sierra Nevada Mountains, Donner Pass Road, 0.8 mile west of its junction with Hwy. I-80, 0.65 mi. NE (62 deg. ) of Kingvale 1921 Comment
  UCR234171  Galium bolanderi George K. Helmkamp, E. A. Helmkamp 2010-8-26 16864 Nevada Northern Sierra Nevada Mountains, Eagle Lakes Road, about 0.5 mile west of its junction with Carlyle Road, 5.8 mi. NE (66 deg. ) of Emigrant Gap, N of I-80 1655 Comment
  UCR237045  Phlox gracilis George K. Helmkamp, E. A. Helmkamp 2012-4-21 18813 Nevada Northern Sierra Nevada Mountains Foothills, junction of Lime Kiln Road and Amberley Lane, 14.5 mi. NNW (345 deg. ) of Auburn 414 Comment
  UCR237100  Anagallis arvensis George K. Helmkamp, E. A. Helmkamp 2012-4-21 18817 Nevada Northern Sierra Nevada Mountains Foothills, junction of Perimeter Road and Mackinaw Way, 14.3 miles NW (336 deg. ) of Auburn 409 Comment
  UCR237355  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2012-6-13 19193 Nevada Northern Sierra Nevada Mountains Foothills, village of Washington, Relief Hill Road, 0.4 mile north of its junction with Maybert Road & NE of the bridge over the South Yuba River 790 Comment
  UCR237362  Panicum acuminatum var. acuminatum George K. Helmkamp, E. A. Helmkamp 2012-6-13 19206 Nevada Northern Sierra Nevada Mountains Foothills, Maybert Road along South Yuba River, 0.6 mi. northeast of the river bridge at Washington 796 Comment
  UCR238598  Aster occidentalis George K. Helmkamp, E. A. Helmkamp 2010-8-26 16850 Nevada Northern Sierra Nevada Mountains, Donner Pass Road, 0.8 mile west of its junction with Hwy. I-80, 0.65 mi. NE (62 deg. ) of Kingvale 1921 Comment
  UCR240977  Bidens frondosa George K. Helmkamp, E. A. Helmkamp 2012-10-9 19999 Nevada Northern Sierra Nevada Mountains Foothills, Higgins Corner; Combie Road, 0.1 mile east of its junction with CA-49, between Auburn and Grass Valley 445 Comment
  UCR240978  Epilobium ciliatum subsp. ciliatum George K. Helmkamp, E. A. Helmkamp 2012-10-9 20000 Nevada Northern Sierra Nevada Mountains Foothills, Higgins Corner; Combie Road, 0.1 mile east of its junction with CA-49, between Auburn and Grass Valley 445 Comment
  UCR249953  Festuca perennis George K. Helmkamp, Elizabeth Helmkamp 2013-4-13 20311 Nevada Northern Sierra Nevada Mountains Foothills, Magnolia Road, 3.0 miles east of its junction with CA-49 495 Comment
  UCR252939  Trifolium repens George K. Helmkamp, Elizabeth Helmkamp 2013-8-7 22122 Nevada Sierra Nevada Mountains Foothills, junction of Table Meadow Road and Combie Road, SE of Higgins Corner 448 Comment
  UCR252944  Cyperus eragrostis George K. Helmkamp, Elizabeth Helmkamp 2013-8-7 22126 Nevada Sierra Nevada Mountains Foothills, junction of Table Meadow Road and Combie Road, SE of Higgins Corner 448 Comment
  UCR252949  Hypochaeris radicata George K. Helmkamp, Elizabeth Helmkamp 2013-8-7 22121 Nevada Sierra Nevada Mountains Foothills, junction of Table Meadow Road and Combie Road, SE of Higgins Corner 448 Comment
  UCR253506  Bromus diandrus George K. Helmkamp 2014-3-11 22542 Nevada Sierra Nevada Mountains Foothills, along Wolf Road, 0.1 mile north of its junction with Matthew Lane, NW of Higgins Corner 413 Comment
  UCR253621  Sonchus oleraceus George K. Helmkamp 2014-3-11 22537 Nevada Sierra Nevada Mountains Foothills, Auburn, southbound on CA-49 about 0.1 mile east of Lincoln Way 402 Comment
  UCR253627  Bromus hordeaceus George K. Helmkamp 2014-3-11 22544 Nevada Sierra Nevada Mountains Foothills, junction of Wolf Road and Lime Kiln Road, W of Hwy 49 & c. 13 miles N of Auburn 518 Comment
  UCR256635  Dittrichia graveolens George K. Helmkamp, Elizabeth Helmkamp 2013-10-10 22396 Nevada Sierra Nevada Mountains Foothills, Along CA-49, c. 0.3 mile north of the junction with Gautier Road and at the side road #20456 441 Comment
  UCR256645  Lotus purshianus var. purshianus George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20724 Nevada Northern Sierra Nevada Mountains Foothills, along Hwy CA-20, 3.5 miles west of CA-49 in Grass Valley 623 Comment
  UCR256664  Elymus glaucus var. glaucus George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20730 Nevada Northern Sierra Nevada Mountains, along Hwy CA-20, 1.6 miles northeast of Pine Flat Way, north of Scotts Flat Reservoir 1189 Comment
  UCR256669  Ranunculus occidentalis George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20740 Nevada Northern Sierra Nevada Mountains, Pine Flat Way, just south of its junction with CA-20 1151 Comment
  UCR256831  Horkelia fusca subsp. parviflora George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20737 Nevada Northern Sierra Nevada Mountains, Pine Flat Way, just south of its junction with CA-20 1151 Comment
  UCR257139  Hieracium albiflorum George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20748 Nevada Northern Sierra Nevada Mountains, along Scotts Flat Road, 0.7 mile southwest of its junction with CA-20, NE of Nevada City, NW of Scotts Flat Reservoir 1091 Comment
  UCR257149  Poa bulbosa George K. Helmkamp 2014-4-17 22748 Nevada Northern Sierra Nevada Mountains Foothills, along CA-120, 2.3 miles west of its junction with CA-49 in Grass Valley 729 Comment
  UCR257152  Ranunculus occidentalis George K. Helmkamp 2014-4-17 22738 Nevada Northern Sierra Nevada Mountains Foothills, along CA-120, 2.3 miles west of its junction with CA-49 in Grass Valley 729 Comment
  UCR257201  Clarkia stellata George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20749 Nevada Northern Sierra Nevada Mountains, along Scotts Flat Road, 0.7 mile southwest of its junction with CA-20, NE of Nevada City, NW of Scotts Flat Reservoir 1091 Comment
  UCR116014  Atriplex triangularis George K. Helmkamp, E. A. Helmkamp 2000-10-18 6231 Orange Newport Bay, South side of the back bay. 6 Comment
  CAS-BOT-BC226818  Senecio aronicoides George K. Helmkamp; E. A. Helmkamp 2012-5-11 18944 Placer Northern Sierra Nevada Mountains Foothills: Finning Mill Road, 1.2 miles north of its junction with Forest Hill Road 1104 Comment
  CAS-BOT-BC228547  Triphysaria versicolor subsp. faucibarbata George K. Helmkamp; E. A. Helmkamp 2011-4-10 17158 Placer Sacramento Valley: along Riosa Road at the east edge of the village of Sheridan 41 Comment
  CAS-BOT-BC270062  Viola tomentosa G. K. Helmkamp; E. A. Helmkamp 2007-5-23 12058 Placer In Sierra Nevada Mountains: Humbug Canyon Road, 0.2 mile NW of Forest Hill Road, generally SW of Westville 1576 Comment
  CAS-BOT-BC516754  Trifolium tomentosum George K. Helmkamp; Amy Barnes 2013-3-28 20299 Placer Eastern Sacramento Valley: NW side of jct of Riosa Rd and Andressen Rd, NE of Sheridan 36 Comment
  CAS-BOT-BC523896  Epilobium angustifolium subsp. circumvagum George K. Helmkamp; Mary Alice Barnes; E. A. Helmkamp 2012-9-8 19815 Placer Northern Sierra Nevada Mountains: along Forest Hill Rd, 10.8 mi NE of Hidden Treasure Rd, 0.75 mi SE of Whisky Hill 1697 Comment
  HSC104176  Centaurea solstitialis G. K. Helmkamp, E. A. Helmkamp 2012-10-13 20020 Placer Sacramento Valley: Granite Bay, Folsom Lake; Park Rd, 1.8 mi. N or the east end of Douglas Blvd. 146 Comment
  OBI83581  Hordeum depressum George K. Helmkamp, Amy Bares 2013-3-28 20284 Placer Eastern Sacramento Valley: along 10th Street/ Ranch House Rd. 0.6 mile south of its junction with Riosa Road in Sheridan (Lincoln 7.5' Q,: 38 deg. 58' 41" N 121 deg. 22' 06" W +- 100m) 43 Comment
  RSA0037367  Ranunculus occidentalis George K. Helmkamp, Mary Alice Barnes 2013-4-18 20371 Placer Iowa Hill Road, 1.8 miles west of the bridge over North Fork American River, 0.6 mi. (airline) east of I-80 at Colfax 544 Comment
  RSA0093828  Limnanthes alba subsp. alba George K. Helmkamp, Amy Barnes 2014-4-23 22812 Placer Sierra Nevada Mountains Foothills. Spring Garden Road, at the north side of its junction with Foresthill Road, 8.4 km west of Foresthill. 720 Comment
  RSA0107422  Trifolium willdenovii George K. Helmkamp, Amy Barnes 2014-3-21 22630 Placer Sacramento Valley: Riosa Road at the east side of its junction with CA-65, just west of Sheridan. 33 Comment
  RSA750421  Campanula prenanthoides George K. Helmkamp, E. A. Helmkamp 2008-9-15 14114 Placer along Foresthill Road 20 miles northeast of the city of Forest Hill 1707 Comment
  RSA755562  Juglans hindsii George K. Helmkamp, E. A. Helmkamp 2009-8-22 15520 Placer along CA-193, 5.3 miles east of Lincoln 123 Comment
  RSA782545  Nama lobbii George K. Helmkamp, Amy Barnes 2009-7-12 15186 Placer Along Foresthill Road 10.3 miles northeast of the town of Foresthill 1370 Comment
  RSA791744  Vicia hirsuta George K. Helmkamp, E. A. Helmkamp 2012-5-5 18916 Placer Northern Sierra Nevada Mountains Foothills: Lake Clementine Road, 1.2 miles west of its junction with Foresthill Road, 0.3 air miles southest (123 degrees) of Clementine Dam on the American River. 396 Comment
  RSA794812  Erigeron inornatus var. inornatus George K. Helmkamp, E. A. Helmkamp 2011-8-26 18164 Placer Forest Hill Road, 26.1 miles east of its junction with Mesquite Road in the city of Foresthill 2020 Comment
  RSA795079  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2011-8-26 18182 Placer Along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat. 2050 Comment
  SD212485  Eriophyllum lanatum var. grandiflorum G. K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10441 Placer Northern Sierra Nevada Foothills, ca. 4.0 miles northeast of Auburn, along Forest Hill Road, 1.8 miles northeast of its junction with CA Highway 49 at the middle fork of the American River. 370 Comment
  SD234803  Ericameria nauseosa var. speciosa G. K. Helmkamp, E. A. Helmkamp 2008-8-20 14029 Placer Northern Sierra Nevada Mountains: Donner Pass Road on the west side of Donner Pass and east of Norden (Norden 7.5'Q) 2149 Comment
  SD237343  Micropus californicus var. californicus G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15918 Placer Sierra Nevada Mountains Foothills: along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing. 199 Comment
  SD241008  Lathyrus nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 2012-5-5 18930 Placer Northern Sierra Nevada Mountains Foothills: Todd Valley road, 1.2 miles south of its junction with Foresthill Road. 779 Comment
  SD241131  Leptosiphon bicolor George K. Helmkamp, E. A. Helmkamp 2010-4-17 15899 Placer Sierra Nevada Mountains Foothills: Rattlesnake Bar Road, 8.3 miles southwest of its junction with CA-49 near Pilot Hill (Pilot Hill 7.5'Q). 308 Comment
  SD241194  Verbascum virgatum George K. Helmkamp, E. A. Helmkamp 2010-4-17 15890 Placer Sierra Nevada Mountains Foothills: Rattlesnake Bar Road, 7.3 miles southwest of its junction with CA-49 near Pilot Hill (Pilot Hill 7.5'Q) 331 Comment
  SD241817  Lupinus bicolor G. K Helmkamp, E. A. Helmkamp 2010-4-17 15886 Placer Sierra Nevada Mountains Foothills: Rattlesnake Bar Road, 4.2 miles southwest of its junction with CA-49 near Pilot Hill (Pilot Hill 7.5'Q) 359 Comment
  SD241942  Ceanothus integerrimus George K. Helmkamp, E. A. Helmkamp 2010-4-17 15900 Placer Siera Nevada Mountains Foothills: Rattleshake Bar Road, 8.3 miles southwest of its junction with CA-49 near Pilot Hill (Pilot Hill 7.5'Q) 308 Comment
  SD243044  Juncus ensifolius George K. Helmkamp, E. A. Helmkamp 2011-8-26 18179 Placer Northern Sierra Nevada Mountains: along Forrest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat. Wet area below a rocky seep. 2050 Comment
  SD243095  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp 2010-7-28 16635 Placer Northern Sierra Nevada Mountains Foothills: Forest Route 10 (Sugar Pine Road) 0.8 mile north of its junction with Forest Hill Road, 8.2 miles NE (34a^z) of Foresthill (Michigan Bluff 7.5'Q) 1310 Comment
  SD243104  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2011-8-26 18176 Placer Northern Sierra Nevada Mountains: Robinson Flat, 0.1 mile sout of the campground at Forest Hill Road (Duncan Peak 7.5'Q) 2061 Comment
  SD243199  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2010-8-11 16753 Placer Northern Sierra Nevada Mountains: Finning Mill Road, 1.2 miles north of Forest Hill Road, at the crossing of Mill Creek. 1085 Comment
  SD243214  Chamaesaracha nana George K. Helmkamp, E. A. Helmkamp 2011-8-26 18185 Placer Northern Sierra Nevada Mountains: along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat. Rocky flat at roadside. 2050 Comment
  SD247298  Lomatium dissectum George K. Helmkamp, Mary Alice Barnes 2013-4-18 20336 Placer Northern Sierra Nevada Mountains Foothills: Yankee Jim Road, 0.9 mile east of its junction with Canyon Way, 4.4 miles southeast (167 degrees) of Colfax. 561 Comment
  SD247300  Sanicula tuberosa George K. Helmkamp, E. A. Helmkamp 2012-6-19 19246 Placer Northern Sierra Nevada Mountains: Robinson's Flat, 27 miles east of Forest Hill at the end of Forest Hill Road. 2040 Comment
  SD247326  Gnaphalium palustre George K. Helmkamp, E. A. Helmkamp 2012-9-25 19905 Placer Northern Sierra Nevada Mountains: Blue Canyon Road, 1.1 miles south of its intersection with I-80, about 1/2 mile south of Blue Canyon-Nyack Airport. 1473 Comment
  SD248366  Thysanocarpus curvipes George K. Helmkamp, Mary Alice Barnes 2013-4-18 20338 Placer Northern Sierra Nevada MountainsFoothills: Yankee Jim Road, 0.9 mile east of its juncton with Canyon Way, 4.4 miles SE (167a^z) of Colfax (Colfax 7.5'Q) 561 Comment
  SD255737  Lupinus bicolor George K. Helmkamp, Amy Barnes 2014-3-21 22644 Placer Sacramentop Valley; Sheridan, Riosa Road at the west side of its junction with old CA 65. 32 Comment
  SD257113  Dichelostemma volubile George K. Helmkamp, Amy Barnes 2014-4-23 22785 Placer Sierra Nevada Mountains Foothills: Old Forest Hill Road, 0.4 mile northeast of its junction with CA-49 at North Fork American River (Auburn 7.5'Q) 289 Comment
  SD260888  Eucephalus breweri George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19826 Placer Northern Sierra Nevada Mountains: along Forest Hill Road, 0.5 mile north of Robinson Flat Campground, c. 26 miles NE of Foresthill, Tahoe National Forest. (Duncan Peak 7.5'Q) 2043 Comment
  SEINET10340049  Boykinia major George K. Helmkamp, E. A. Helmkamp 2008-9-15 14115 Placer Northern Sierra Nevada Mountains; along Foresthill Road 20 miles northeast of the city of Forest Hill 1707 Comment
  SEINET11261457  Triphysaria versicolor subsp. faucibarbata George Helmkamp, E. A. Helmkamp 2011-4-10 17158 Placer In Sacramento Valley along Riosa Road at the E edge on the village of Sheridan.; 0 41 Comment
  SEINET11261547  Lathyrus sulphureus George Helmkamp, E. A. Helmkamp 2012-5-5 18914 Placer Northern Sierra Nevada Mountains Foothills on Lake Clementine Road, 1.2 miles W of the junction with Foresthill Road. 0.3 air miles SE (123 degrees) of Clementine Dam on the American River.; 0 396 Comment
  SEINET11261796  Triteleia hyacinthina George K. Helmkamp, E. A. Helmkamp 2011-7-26 17889 Placer Northern Sierra Nevada Mountains: Along CA Highway 20, 0.8 miles E of Bowman Lake Road, 1.23 miles NE (50 degrees) of Emigrant Gap and 0.35 miles N of I-80.; 0 1541 Comment
  SEINET11261856  Euphorbia crenulata George Helmkamp, E. A. Helmkamp 2012-5-11 18943 Placer Northern Sierra Nevada Mountains Foothills: Finning Mill Road, 1.2 miles N of its junction with Forest Hill Road (Foresthill 7.5' Q.); 0 1104 Comment
  SEINET13203118 Image available Calystegia occidentalis subsp. occidentalis George K. Helmkamp, Amy Barnes 2014-1 22779 Placer Sierra Nevada Mountains Foothills: Old Forest Hill Road, 0.4 mile northeast of its junction with CA-49 at North Fork American River (Auburn 7.5' Q.) 290 Comment
  SEINET2441549  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2009-4-22 14583 Placer Sierra Nevada Mountains Foothills: Forest Hill road near Grizzly Bear House, about one mile northeast of the road to the lower end of Clementine Lake (Greenwood 7.5' Q.). 732 Comment
  SEINET2473480 Image available Elymus glaucus subsp. glaucus George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-1 16436 Placer Sierra Nevada Mountains Foothills; Iowa Hill Road, 1.9 miles southeast of its junction with Canyon Way in Colfax 410 Comment
  SEINET3246089  Lupinus lepidus var. confertus G. K. Helmkamp, E. A. Helmkamp 2007-1 12640 Placer Northern Sierra Nevada Mountains: 0.1 miles south of the Rainbow exit from Interstate-80, 0.5 miles east of Rainbow. 1789 Comment
  SEINET3440029 Image available Poa George K. Helmkamp, E. A. Helmkamp 2012-5-5 18918 Placer Northern Sierra Nevada Mountains Foothills: Lake Clementine Road, 1.2 mi W of its junction with Foresthill Road, 0.3 air mi SE of Clementine Dam on the American River 396 Comment
  SEINET3828342  Acer macrophyllum George K. Helmkamp, E. A. Helmkamp 2012-1 18953 Placer Northern Sierra Nevada Mountians Foothills: Finnin Mill Road, 1.7 miles north of its junction with Forest Hill Road, Foresthill 7.5 1041 Comment
  SEINET4560772  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2010-1 16658 Placer Northern Sierra Nevada Mountains: Forest Hill Road, 22 miles northeast of the city of Foresthill. 2041 Comment
  SEINET4560774  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2010-1 16647 Placer Northern Sierra Nevada Mountains; Forest Hill Road at Hidden Treasure Road, 10.4 miles northeast of the city of Foresthill. 1384 Comment
  SEINET4691682  Hesperolinon micranthum George K. Helmkamp, E. A. Helmkamp 2010-1 16760 Placer Northern Sierra Nevada Mountains: Finning Mill Road, 2.3 miles north of Forest Hill Road at the crossing of McBride Creek. 1082 Comment
  SEINET4691695  Rubus parviflorus George K. Helmkamp, E. A. Helmkamp 2010-1 16787 Placer Northern Sierra Nevada Mountains: American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill road and just south of a creek crossing. 1552 Comment
  SEINET4691717  Artemisia douglasiana George K. Helmkamp 2011-1 18340 Placer Northern Sierra Nevada Mountains Foothills: Diggins Hill Road at the south side of the Bear River Reservoir, 1.1 miles north of Dutch Flat 852 Comment
  SEINET9262074  Agrostis stolonifera George K. Helmkamp, Elizabeth Helmkamp 2012-1 19904 Placer Northern Sierra Nevada Mountains: Blue Canyon Road, 1.1 miles south of its intersection with I-80 about 1/2 miles south of Blue Canyon-Nyack Airport (Blue Canyon 7.5 Q) 1472 Comment
  UCD109016  Lupinus nanus G. K. Helmkamp; Elizabeth Helmkamp 2006-4-6 10131 Placer Northern Sierra Nevada Foothills: NE edge of Sacramento metropolitan area; Sierra College Road and King Ranch Road SSE of Rocklin. 122 Comment
  UCD111148  Trifolium hirtum G. K. Helmkamp; E. A. Helmkamp 2007-3-25 11712 Placer Northern Sierra Nevada Mountains: Forest Hill Road at the junction with the unnamed road to Lake Clementine. 457 Comment
  UCD122499  Castilleja foliolosa G. K. Helmkamp; Elizabeth Helmkamp 2006-5-13 10435 Placer Northern Sierra Nevada: ca. 4 air mi. NE of Auburn, along Forest Hill Road, 1.8 mi. NE of its junction with CA Hwy 49 at the middle fork of the American River. 370 Comment
  UCD123161  Cordylanthus tenuis subsp. tenuis G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12629 Placer Northern Sierra Nevada Mountains: Southeast end of Cisco Grove; along local road just before it passes under Interstate-80. 1744 Comment
  UCD128584  Agoseris grandiflora G. K. Helmkamp; Elizabeth Helmkamp 2006-5-13 10449 Placer Northern Sierra Nevada. Ca. 4 air miles NE of Auburn, along an unnamed road to Lake Clementine, 1.2 miles N of Forest Hill Road. 422 Comment
  UCD132001  Erigeron inornatus var. inornatus G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12628 Placer Northern Sierra Nevada Mountains: Southeast end of Cisco Grove; along local road just before it passes under Interstate-80. 1744 Comment
  UCD132764  Helianthella californica var. nevadensis G. K. Helmkamp; E. A. Helmkamp 2007-8-1 12648 Placer Northern Sierra Nevada Mountains. Donner Pass Road between Donner and Norden, about 0.2 mile E of the Nevada County border. 2151 Comment
  UCR110999  Festuca viridula George K. Helmkamp, E. A. Helmkamp 1999-6-30 5097 Placer Northern Sierra Nevadas, Soda Springs Road 0.9 mi south of Donner Pass Road, approaching Ice Lakes. 2104 Comment
  UCR111002  Taraxacum officinale George K. Helmkamp, E. A. Helmkamp 1999-6-30 5110 Placer Northern Sierra Nevadas, Soda Springs Road 0.9 mi south of Donner Pass Road, approaching Ice Lakes. 2104 Comment
  UCR120497  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5042 B Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR120498  Madia minima George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5027 Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR120502  Carex illota George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5029 Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR121487  Galium bifolium George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5021 A Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR121488  Gilia capillaris George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5021 B Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR170792  Lepidium campestre George K. Helmkamp, E. A. Helmkamp 2005-9-30 9959 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR170817  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2005-9-30 9940 Placer Northern Sierra Nevada Mtns., Hampshire Rocks Road south of the I-80 Rainbow exit (c. 2 mi east of Cisco Grove) 1805 Comment
  UCR170818  Lepidium campestre George K. Helmkamp, E. A. Helmkamp 2005-9-30 9958 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR170820  Aster occidentalis var. yosemitanus George K. Helmkamp, E. A. Helmkamp 2005-9-30 9945 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR171545  Claytonia perfoliata George K. Helmkamp, E. A. Helmkamp 2006-2-9 10058 Placer Northern Central Valley, English Colony Way [Humphrey Road] at Sierra College Blvd near Clover Valley Creek; SE of Lincoln 183 Comment
  UCR172648  Castilleja pruinosa George K. Helmkamp, Elizabeth Helmkamp 2006-4-13 10199 Placer Northern Sierra Nevada Foothills, Forest Hill Road, 2.5 mi east of its junction with Calif. Hwy 49. North side of the middle fork of the American River, NE of Auburn 274 Comment
  UCR173255  Polypodium calirhiza George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10450 Placer Northern Sierra Nevada Foothills, c. 4 air mi. NE of Auburn, along an unnamed road to Lake Clementine, 1.2 mi. N of Forest Hill Road 422 Comment
  UCR173262  Gilia capitata subsp. mediomontana George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10425 Placer Northern Sierra Nevada foothills, 2.1 mi south of Auburn along Calif. Hwy 49 293 Comment
  UCR173696  Vicia villosa subsp. varia George K. Helmkamp, Elizabeth Helmkamp 2006-4-6 10132 Placer Northern Sierra Nevada Foothills, NE edge of Sacramento metropolitan area; Sierra College Road and King Ranch Road SSE of Rocklin 122 Comment
  UCR176279  Fritillaria George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10448 Placer Northern Sierra Nevada Foothills, c. 4 air mi. NE of Auburn, along an unnamed road to Lake Clementine, 1.2 mi. N of Forest Hill Road 422 Comment
  UCR188843  Ceanothus cuneatus subsp. cuneatus George K. Helmkamp, E. A. Helmkamp 2007-3-25 11714 Placer Foothills, Northern Sierra Nevada Mountains, Forest Hill Road at the junction with the unnamed road to Lake Clementine 457 Comment
  UCR189631  Lupinus lepidus var. confertus George K. Helmkamp, E. A. Helmkamp 2007-7-27 12640 Placer Northern Sierra Nevada Mountains, 0.1 mile south of the Rainbow exit from Interstate-80, 0.5 miles east of Rainbow 1790 Comment
  UCR189637  Polygonum phytolaccifolium George K. Helmkamp, E. A. Helmkamp 2007-7-27 12634 Placer Northern Sierra Nevada Mountains, Southeast end of Cisco Grove; along local road just before it passes under Interstate-80 1744 Comment
  UCR189638  Cordylanthus tenuis subsp. tenuis George K. Helmkamp, E. A. Helmkamp 2007-7-27 12629 Placer Northern Sierra Nevada Mountains, Southeast end of Cisco Grove; along local road just before it passes under Interstate-80 1744 Comment
  UCR190154  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2007-8-1 12646 Placer Northern Sierra Nevada Mountains, Donner Pass Road between Donner and Norden, about 0.2 mile east of the Nevada Co. border 2151 Comment
  UCR190702  Polystichum imbricans subsp. imbricans George K. Helmkamp, E. A. Helmkamp 2007-9-14 12966 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road 15 miles east of Foresthill 832 Comment
  UCR190846  Galium parisiense George K. Helmkamp, E. A. Helmkamp 2007-5-23 12064 Placer Northern Sierra Nevada Mountains, Humbug Canyon Road, 0.2 mile northwest of Forest Hill Road, generally southwest of Westville 1576 Comment
  UCR191060  Rosa bridgesii George K. Helmkamp, E. A. Helmkamp 2007-5-23 12052 Placer Northern Sierra Nevada Mountains Foothills, along Forest Hill Road, 2.3 miles northeast of Foresthill 1116 Comment
  UCR191104  Calochortus leichtlinii George K. Helmkamp, E. A. Helmkamp 2007-6-12 12327 Placer Northern Sierra Nevada Mountains, Lake Spaulding Road just north of its junction with Hwy CA-20 1610 Comment
  UCR191109  Silene lemmonii George K. Helmkamp, E. A. Helmkamp 2007-6-12 12318 Placer Northern Sierra Nevada Mountains, Lake Spaulding Road just north of its junction with Hwy CA-20 1610 Comment
  UCR193333  Nemophila parviflora var. austiniae George K. Helmkamp, E. A. Helmkamp 2007-5-30 12192 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.5 miles east of its junction with Forest Hill Road in Foresthill, between Mosquito Ridge Lookout and North Fork of Middle Fork American River 800 Comment
  UCR193394  Phacelia heterophylla subsp. virgata George K. Helmkamp, E. A. Helmkamp 2007-5-30 12208 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 8.5 miles east of its junction with Forest Hill Road in Foresthill 488 Comment
  UCR193399  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2007-5-30 12198 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 17 miles east of its junction with Forest Hill Road in Foresthill, NW of Ditch Camp 963 Comment
  UCR194701  Monardella sheltonii George K. Helmkamp, E. A. Helmkamp 2007-5-30 12206 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 8.5 miles east of its junction with Forest Hill Road in Foresthill 488 Comment
  UCR194707  Lactuca serriola George K. Helmkamp, E. A. Helmkamp 2007-10-28 13106 Placer Sacramento Valley, along Nicolaus Road 5.8 miles west of Lincoln 27 Comment
  UCR194708  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2007-10-28 13107 Placer Sacramento Valley, along Nicolaus Road 5.8 miles west of Lincoln 27 Comment
  UCR194963  Filago gallica George K. Helmkamp, E. A. Helmkamp 2007-5-18 12026 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road, 4.2 miles southeast of Foresthill 793 Comment
  UCR198411  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2008-4-17 13296 Placer Sacramento Valley / Sierra Nevada Foothills, about 0.2 mile north of CA-193 on Fowler Road, about 6 miles east of Lincoln 93 Comment
  UCR198417  Plagiobothrys stipitatus var. stipitatus George K. Helmkamp, E. A. Helmkamp 2008-4-17 13285 Placer Sacramento Valley, Ranch House Road, 0.2 mile southeast of Sheridan 37 Comment
  UCR198418  Triphysaria pusilla George K. Helmkamp, E. A. Helmkamp 2008-4-17 13286 Placer Sacramento Valley, Ranch House Road, 0.2 mile southeast of Sheridan 37 Comment
  UCR201908  Eriogonum wrightii var. subscaposum George K. Helmkamp, E. A. Helmkamp 2008-8-20 14023 Placer Northern Sierra Nevada Mountains, Donner Pass Road on the west side of Donner Pass and east of Norden 2149 Comment
  UCR206357  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2009-3-11 14386 Placer Sacramento Valley, Ranch House Road, 0.2 mile south of Sheridan 37 Comment
  UCR206358  Spergula arvensis subsp. arvensis George K. Helmkamp, E. A. Helmkamp 2009-3-11 14385 Placer Sacramento Valley, Ranch House Road, 0.2 mile south of Sheridan 37 Comment
  UCR207105  Eriogonum ursinum var. ursinum George K. Helmkamp, E. A. Helmkamp 2009-7-16 15227 Placer Sierra Nevada Mountains, Forest Hill Road, 26.1 miles northeast of the city of Foresthill, c. 3/4 mi. NW of Sailor Flat 2020 Comment
  UCR207861  Dicentra formosa George K. Helmkamp, E. A. Helmkamp 2009-4-22 14568 Placer Sierra Nevada Mountains Foothills, town of Foresthill, along Forest Hill Road 988 Comment
  UCR207900  Lotus denticulatus George K. Helmkamp, E. A. Helmkamp 2009-4-22 14584 Placer Sierra Nevada Mountains Foothills, Forest Hill road near Grizzly Bear House, about one mile northeast of the road to the lower end of Clementine Lake 732 Comment
  UCR208274  Castilleja pruinosa George K. Helmkamp, E. A. Helmkamp 2009-5-7 14641 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.6 miles east of its junction with Forest Hill Road in Foresthill 771 Comment
  UCR208279  Nemophila parviflora var. austiniae George K. Helmkamp, E. A. Helmkamp 2009-5-7 14633 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.6 miles east of its junction with Forest Hill Road in Foresthill 771 Comment
  UCR208545  Calystegia occidentalis subsp. occidentalis George K. Helmkamp, E. A. Helmkamp 2009-5-11 14673 Placer Sierra Nevada Mountains Foothills, Driver's Flat Road 0.8 mile south of its junction with Forest Hill Road, c. 8 miles (air) NE of Auburn 517 Comment
  UCR215903  Chlorogalum pomeridianum George K. Helmkamp, Amy Barnes 2009-7-12 15172 Placer Sierra Nevada Mountains Foothills, along Foresthill Road at the northeast end of the city of Foresthill 985 Comment
  UCR215977  Piperia transversa George K. Helmkamp, Amy Barnes 2009-7-12 15175 Placer Sierra Nevada Mountains Foothills, along Foresthill Road, 5.7 miles northeast of the city of Foresthill 1230 Comment
  UCR215978  Sanguisorba officinalis George K. Helmkamp, Amy Barnes 2009-7-12 15174 Placer Sierra Nevada Mountains Foothills, along Foresthill Road, 5.7 miles northeast of the city of Foresthill 1230 Comment
  UCR215982  Eriogonum nudum var. oblongifolium George K. Helmkamp, Amy Barnes 2009-7-12 15182 Placer Sierra Nevada Mountains, along Foresthill Road 10.3 miles northeast of the town of Foresthill 1370 Comment
  UCR218235  Lupinus nanus George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16444 Placer Sierra Nevada Mountains Foothills, Iowa Hill Road, 1.3 miles SE of its junction with Canyon Way in Colfax 418 Comment
  UCR218245  Madia citriodora George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16431 Placer Sierra Nevada Mountains Foothills, Yankee Jims Road on the east side of Yankee Jims Bridge over the North Fork American River, 5 mi. SE (146 deg. ) of Colfax 282 Comment
  UCR222546  Verbascum virgatum George K. Helmkamp, E. A. Helmkamp 2010-4-17 15890 Placer Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 7.3 miles southwest of its junction with CA-49 near Pilot Hill 332 Comment
  UCR222550  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2010-4-17 15895 Placer Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, about 0.2 mile northeast of the entrance to the Folsom Lake recreational area 305 Comment
  UCR231822  Campanula prenanthoides George K. Helmkamp, E. A. Helmkamp 2010-8-11 16758 Placer Northern Sierra Nevada Mountains, Finning Mill Road, 2.3 miles north of Forest Hill Road at the crossing of McBride Creek 1082 Comment
  UCR231834  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2010-8-14 16776 Placer Northern Sierra Nevada Mountains, American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing 1552 Comment
  UCR231839  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2010-8-14 16782 Placer Northern Sierra Nevada Mountains, American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing 1552 Comment
  UCR231844  Epilobium glaberrimum subsp. glaberrimum George K. Helmkamp, E. A. Helmkamp 2010-8-14 16794 Placer Northern Sierra Nevada Mountains, American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing 1552 Comment
  UCR231849  Lepidium latifolium George K. Helmkamp, E. A. Helmkamp 2010-8-11 16754 Placer Northern Sierra Nevada Mountains, Finning Mill Road, 1.2 miles north of Forest Hill Road, at the crossing of Mill Creek 1085 Comment
  UCR231852  Eucephalus breweri George K. Helmkamp, E. A. Helmkamp 2010-8-14 16768 Placer Northern Sierra Nevada Mountains, Deadwood Road, 1.2 miles south of its junction wih Forest Hill Road 1564 Comment
  UCR231865  Physocarpus capitatus George K. Helmkamp, E. A. Helmkamp 2010-10-16 17030 Placer Northern Sierra Nevada Mountains Foothills, along Forest Route 24 at Parker Flat and beside Forbes Creek, 1.9 miles east (airline) of the Sugar Pine Reservoir dam 1180 Comment
  UCR231871  Alnus rhombifolia George K. Helmkamp, E. A. Helmkamp 2010-10-16 17025 Placer Northern Sierra Nevada Mountains Foothills, along Forest Route 24 at Parker Flat and beside Forbes Creek, 1.9 miles east (airline) of the Sugar Pine Reservoir dam 1180 Comment
  UCR231878  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2010-10-16 17032 Placer Northern Sierra Nevada Mountains Foothills, Sugar Pine Road at the southwest corner of Sugar Pine Reservoir near the dam 1128 Comment
  UCR231882  Scandix pecten-veneris George K. Helmkamp, E. A. Helmkamp 2011-4-10 17138 Placer Sacramento Valley, east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road 98 Comment
  UCR231893  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2011-4-10 17142 Placer Sacramento Valley, east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road 98 Comment
  UCR232622  Cynoglossum occidentale George K. Helmkamp, E. A. Helmkamp 2010-7-28 16636 Placer Northern Sierra Nevada Mountains, Forest Route 10 (Sugar Pine Rd.), 0.8 mile north of its junction with Forest Hill Road, 8.2 miles NE (34 deg. ) of Foresthill 1311 Comment
  UCR232634  Pseudognaphalium canescens subsp. thermale George K. Helmkamp, E. A. Helmkamp 2010-7-28 16639 Placer Northern Sierra Nevada Mountains, Forest Route 10 (Sugar Pine Rd.), 0.8 mile north of its junction with Forest Hill Road, 8.2 miles NE (34 deg. ) of Foresthill 1311 Comment
  UCR232644  Pseudotsuga menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2011-9-30 18346 Placer Northern Sierra Nevada Mountains Foothills, Diggins Hill Road at the south side of the Bear River Reservoir, 1.1 miles north of Dutch Flat 852 Comment
  UCR232649  Gilia capitata subsp. pedemontana George K. Helmkamp, E. A. Helmkamp 2011-9-30 18342 Placer Northern Sierra Nevada Mountains Foothills, Diggins Hill Road at the south side of the Bear River Reservoir, 1.1 miles north of Dutch Flat 852 Comment
  UCR233011  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2011-5-12 17258 Placer Southern Sacramento Valley, south of Lincoln along Athens Ave., 1.6 mile east of Fiddyment Road, 0.6 mi. west of Industrial Ave. 41 Comment
  UCR233020  Leontodon taraxacoides George K. Helmkamp, E. A. Helmkamp 2011-5-12 17256 Placer Southern Sacramento Valley, south of Lincoln along Athens Ave., 1.6 mile east of Fiddyment Road, 0.6 mi. west of Industrial Ave. 41 Comment
  UCR233386  Phlox gracilis George K. Helmkamp, E. A. Helmkamp 2011-8-26 18173 Placer Northern Sierra Nevada Mountains, Robinson Flat, 0.1 mile south of the campground at Forest Hill Road 2061 Comment
  UCR233391  Collomia tinctoria George K. Helmkamp, E. A. Helmkamp 2011-8-26 18169 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 0.4 miles west of Robinson Flat 2041 Comment
  UCR233397  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2011-8-26 18176 Placer Northern Sierra Nevada Mountains, Robinson Flat, 0.1 mile south of the campground at Forest Hill Road 2061 Comment
  UCR233398  Phacelia mutabilis George K. Helmkamp, E. A. Helmkamp 2011-8-26 18175 Placer Northern Sierra Nevada Mountains, Robinson Flat, 0.1 mile south of the campground at Forest Hill Road 2061 Comment
  UCR233400  Mimulus breweri George K. Helmkamp, E. A. Helmkamp 2011-8-26 18186 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat 2050 Comment
  UCR235384  Ceanothus oliganthus George K. Helmkamp, E. A. Helmkamp 2012-5-11 18946 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.2 miles north of its junction with Forest Hill Road 1104 Comment
  UCR235389  Viola purpurea subsp. purpurea George K. Helmkamp, E. A. Helmkamp 2012-5-11 18951 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.7 miles north of its junction with Forest Hill Road 1041 Comment
  UCR235423  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2012-5-11 18956 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.7 miles north of its junction with Forest Hill Road 1041 Comment
  UCR235483  Festuca George K. Helmkamp, E. A. Helmkamp 2012-5-5 18938 Placer Northern Sierra Nevada Mountains Foothills, Todd Valley Road, 1.2 miles south of its junction with Foresthill Road 779 Comment
  UCR235591  Calochortus monophyllus George K. Helmkamp, E. A. Helmkamp 2012-5-5 18926 Placer Northern Sierra Nevada Mountains Foothills, Todd Valley Road, 1.2 miles south of its junction with Foresthill Road 779 Comment
  UCR235597  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2012-5-5 18920 Placer Northern Sierra Nevada Mountains Foothills, Lake Clementine Road, 1.2 miles west of its junction with Foresthill Road, 0.3 air mi. SE (123 deg. ) of Clementine Dam on the American River 396 Comment
  UCR238573  Geranium molle George K. Helmkamp, E. A. Helmkamp 2012-3-31 18648 Placer Sacramento Valley, along CA-193, 0.1 mile west of its junction with Sierra College Blvd. 88 Comment
  UCR238586  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-3-31 18665 Placer Northern Sierra Nevada Mountains Foothills, Old Foresthill Road, 0.7 mile northeast of its junction with CA-49 and the American River Crossing 258 Comment
  UCR238591  Amsinckia retrorsa George K. Helmkamp, E. A. Helmkamp 2012-3-31 18660 Placer Sacramento Valley, along CA-193, 0.1 mile west of its junction with Sierra College Blvd. 88 Comment
  UCR238597  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2012-3-31 18668 Placer Northern Sierra Nevada Mountains Foothills, Old Foresthill Road, 0.7 mile northeast of its junction with CA-49 and the American River Crossing 258 Comment
  UCR238601  Hypochaeris radicata George K. Helmkamp, E. A. Helmkamp 2012-3-31 18651 Placer Sacramento Valley, along CA-193, 0.1 mile west of its junction with Sierra College Blvd. 88 Comment
  UCR240903  Polygala cornuta var. cornuta George K. Helmkamp, E. A. Helmkamp 2012-6-19 19216 Placer Northern Sierra Nevada Mountains Foothills, Foresthill Road, 2.6 miles east of its junction with Mosquito Ridge Road in Forest Hill 1052 Comment
  UCR240922  Erysimum perenne George K. Helmkamp, E. A. Helmkamp 2012-6-19 19249 Placer Northern Sierra Nevada Mountains, Robinson's Flat, 27 miles east of Forest Hill at the end of Forest Hill Road 2040 Comment
  UCR240944  Gayophytum George K. Helmkamp, E. A. Helmkamp 2012-9-25 19896 Placer Northern Sierra Nevada Mountains, junction of Blue Canyon Road and Putt Road, just south of I-80, west of Emigrant Gap 1634 Comment
  UCR240949  Chenopodium George K. Helmkamp, E. A. Helmkamp 2012-9-25 19901 Placer Northern Sierra Nevada Mountains, junction of Blue Canyon Road and Putt Road, just south of I-80, west of Emigrant Gap 1634 Comment
  UCR240952  Agrostis stolonifera George K. Helmkamp, E. A. Helmkamp 2012-9-25 19904 Placer Northern Sierra Nevada Mountains, Blue Canyon Road, 1.1 miles south of its intersection with I-80, c. 1/2 mi. south of Blue Canyon-Nyack Airport 1473 Comment
  UCR240965  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2012-9-25 19917 Placer Northern Sierra Nevada Mountains, junction of Nyack Road and I-80 in the Emigrant Gap area 1652 Comment
  UCR241344  Castilleja subinclusa George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19825 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 0.5 mile north of Robinson Flat Campground, c. 26 miles NE of Foresthill, Tahoe National Forest 2043 Comment
  UCR241352  Epilobium canum George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19811 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 10.4 miles northeast of Hidden Treasure Road, 0.45 mi. ESE of Whisky Hill 1677 Comment
  UCR241766  Eriogonum nudum var. nudum George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19804 Placer Northern Sierra Nevada Mountains, along Forest Hill Road at junction with Hidden Treasure Road, c. 0.4 mile NE of Sugar Pine Road 1384 Comment
  UCR242361  Chaenactis douglasii George K. Helmkamp, E. A. Helmkamp 2010-7-28 16664 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 1.6 miles west of the junction with Soda Springs Road at Robinson Flat 2040 Comment
  UCR242367  Gilia leptalea subsp. leptalea George K. Helmkamp, E. A. Helmkamp 2010-7-28 16667 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 1.6 miles west of the junction with Soda Springs Road at Robinson Flat 2040 Comment
  UCR242368  Pedicularis semibarbata George K. Helmkamp, E. A. Helmkamp 2010-7-28 16677 Placer Northern Sierra Nevada Mountains, Robinson Flat campground near the junction of Forest Hill Road and Soda Springs Road, 27 miles northwest of the city of Foresthill 2040 Comment
  UCR249536  Plantago lanceolata George K. Helmkamp, Amy Barnes 2013-3-28 20295 Placer Eastern Sacramento Valley, northwest side of junction of Riosa Road and Andressen Road, northeast of Sheridan 36 Comment
  UCR249611  Cynosurus echinatus George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20832 Placer Northern Sierra Nevada Mountains Foothills, junction of Yankee Jim's Road and Shirttail Canyon Road, NW of Foresthill 463 Comment
  UCR249992  Prunella vulgaris var. lanceolata George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20807 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 Comment
  UCR250142  Daucus carota George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20815 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 Comment
  UCR250189  Thysanocarpus curvipes George K. Helmkamp, Mary Alice Barnes 2013-4-18 20338 Placer Northern Serrra Nevada Mountains Foothills, Yankee Jim Road, 0.9 mile east of its junction with Canyon Way, 4.4 miles SE (167 deg. ) of Colfax 561 Comment
  UCR250361  Phacelia imbricata subsp. imbricata George K. Helmkamp, Mary Alice Barnes 2013-4-18 20369 Placer Northern Sierra Nevada Mtns Foothills, Iowa Hill Road, 1.8 miles west of the bridge over North Fork American River, 0.6 mi. (airline) east of I-80 at Colfax 544 Comment
  UCR253225  Geranium dissectum George K. Helmkamp, Amy Barnes 2014-4-23 22813 Placer Sierra Nevada Mountains Foothills, Spring Garden Road, at the north side of its junction with Foresthill Road, 8.4 km west of Foresthill 720 Comment
  UCR253527  Triteleia ixioides subsp. anilina George K. Helmkamp, Amy Barnes 2014-4-23 22791 Placer Sierra Nevada Mountains Foothills, Old Auburn-Foresthill Road, 1.7 miles northeast of its junction with CA-49 at North Fork American River 407 Comment
  UCR253528  Plagiobothrys shastensis George K. Helmkamp, Amy Barnes 2014-4-23 22792 Placer Sierra Nevada Mountains Foothills, Old Auburn-Foresthill Road, 1.7 miles northeast of its junction with CA-49 at North Fork American River 407 Comment
  UCR253551  Plantago lanceolata George K. Helmkamp, Amy Barnes 2014-4-23 22803 Placer Sierra Nevada Mountains Foothills, Spring Garden Road, at the north side of its junction with Foresthill Road, 8.4 km west of Foresthill 720 Comment
  UCR253572  Iris hartwegii subsp. hartwegii George K. Helmkamp, Amy Barnes 2014-4-23 22798 Placer Sierra Nevada Mountains Foothills, Old Auburn-Foresthill Road, 1.7 miles northeast of its junction with CA-49 at North Fork American River 407 Comment
  UCR257075  Trifolium hirtum George K. Helmkamp, Amy Barnes 2014-4-23 22776 Placer Sierra Nevada Mountains Foothills, Old Forest Hill Road, 0.4 mile northeast of its junction with CA-49 at North Fork American River 290 Comment
  UCR257733  Eucephalus breweri George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19517 Placer Northern Sierra Nevada Mountains, Sugar Bowl Road, 0.4 mile south of its junction with Donner Pass Road, just west of Lake Mary 2136 Comment
  UCR258169  Asclepias fascicularis George K. Helmkamp, Elizabeth Helmkamp 2012-10-20 20051 Placer Sierra Nevada Mountains Foothills, North Auburn; unnamed dirt road on east side of CA-49, between Rock Creek Road and Locksley Lane 387 Comment
  UCR259874  Daucus carota George K. Helmkamp, Elizabeth Helmkamp 2013-11-2 22464 Placer Sacramento Valley, Highway CA-193 (Lincoln-Newcastle Hwy) at the junction with Gold Hill Road, 3.8 miles northwest of US-80 114 Comment
  UCR259879  Calystegia occidentalis subsp. occidentalis George K. Helmkamp, Elizabeth Helmkamp 2013-11-2 22462 Placer Sacramento Valley, Highway CA-193 (Lincoln-Newcastle Hwy) at the junction with Gold Hill Road, 3.8 miles northwest of US-80 114 Comment
  UCSC010619  Trifolium willdenovii George K. Helmkamp, Amy Barnes 2014-3-21 22630 Placer Sacramento Valley: iosa Road at the east side of junction with CA SR65, just west of Sheridan 33 Comment
  CAS-BOT-BC137660  Aristida adscensionis G. Helmkamp; E. Helmkamp 1998-1-17 2536 Riverside Box Canyon northeast of Mecca and 3.5 miles south of Shaver's Well. 243 Comment
  CAS-BOT-BC235772  Keckiella cordifolia G. K. Helmkamp; E. A. Helmkamp 1998-8-17 4444 Riverside Santa Ana Mtns.: San Juan Cyn along the Ortega Hwy (Ca-74) beside the Orange Co. line 503 Comment
  CLARK-A1045-122  Eriogonum pusillum George K. Helmkamp 1977-3-20 Riverside Deep Canyon dry wash of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-138  Cryptantha intermedia George K. Helmkamp 1978-4-1 Riverside Deep Canyon rocky flat by University of California Reserve System Boyd research station; Palm Desert 15'Q Comment
  CLARK-A1045-158  Mimulus floribundus George K. Helmkamp 1978-6-1 Riverside Santa Ana Mountains vernal pool near origin of creek; Wildomar 7.5'Q Comment
  CLARK-A1045-163  Sisyrinchium bellum George K. Helmkamp 1978-6-1 Riverside Santa Ana Mountains vernal pool near creek; Wildomar 7.5' Q Comment
  CLARK-A1045-179  Downingia cuspidata George K. Helmkamp 1979-5-5 Riverside Santa Ana Mountains vernal pool; Wildomar 7.5'Q Comment
  CLARK-A1045-187  Lomatium utriculatum George K. Helmkamp 1979-5-5 Riverside Santa Ana Mountains end of road; Wildomar 7.5'Q Comment
  CLARK-A1045-206  Acamptopappus sphaerocephalus George K. Helmkamp 1979-4-29 Riverside Windy Point Whitewater 7.5'Q Comment
  CLARK-A1045-213  Eriogonum trichopes George K. Helmkamp 1979-4-18 Riverside Indio Hills Dillon Road at dry wash; Lost Horse Mtn. 15'Q Comment
  CLARK-A1045-293  Eriophyllum multicaule George K. Helmkamp 1979-5-16 Riverside San Jacinto Mountains Bee Canyon Road; chaparral; ; Hemet 15'Q 609 Comment
  CLARK-A1045-301  Eriophyllum wallacei George K. Helmkamp 1977-3-20 Riverside Deep Canyon dry wash of Deep canyon; ; Palm Desert 15'Q Comment
  CLARK-A1045-334  Collinsia heterophylla George K. Helmkamp 1978-5-2 Riverside Bautista Canyon Bautista Road; Hemet 15'Q Comment
  CLARK-A1045-342  Linaria canadensis var. texana George K. Helmkamp 1978-4-8 Riverside Box Springs Mountains Riverside East 7.5Q' Comment
  CLARK-A1045-66  Mimulus diffusus George K. Helmkamp 1978-5-6 Riverside Bautista Canyon burn on moist, north slope of Canyon; Hemet 15'Q Comment
  CLARK-A1045-76  Linanthus lemmonii George K. Helmkamp 1978-5-20 Riverside San Jacinto Mountains meadow; Idyllwild 15' Q Comment
  HSC78514  Pectocarya heterocarpa G. K. Helmkamp 1983-3-24 38312 Riverside Little Chuckwalla Mtns., N base, 1.5 mi. E of Graham Pass Rd. 335 Comment
  HSC79081  Cryptantha racemosa G. K. Helmkamp 1984-5-5 - 4 Riverside Little San Bernardino Mtns., Big Morongo Canyon, 4 mi. below the caretaker's house at the Big Morongo Preserve 549 Comment
  HSC79253  Eschscholzia minutiflora G. K. Helmkamp 1984-5-5 - 3 Riverside Little San Bernardino Mtns., Big Morongo Canyon, 4 mi. below the caretaker's house at the Big Morongo Preserve 549 Comment
  OBI37412  Stephanomeria pauciflora G. Helmkamp 1985-5-9 454 Riverside 1/2 mi from the Coachella Valley 503 Comment
  RSA518291  Sesbania exaltata George K. Helmkamp 1989-9-16 s.n. Riverside W side of State Hwy. 78, 0.7 mi. N of Palo Verde. Palo Verde. 75 Comment
  RSA614704  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 1997-3-5 1325 Riverside 2.8 mi SE of Gilman Hot Springs. 518 Comment
  RSA614891  Astragalus tricarinatus George K. Helmkamp 1998-4-3 3087 Riverside Coachella Valley: Mission Creek, the Wildlands Conservancy Preserve. 1.1 mile NW of the ranch house besides a gauging station along the creek. 747 Comment
  RSA615329  Perityle emoryi George K. Helmkamp, E. A. Helmkamp 1998-2-18 2717 Riverside Colorado Desert: Chuckwalla Valley, 0.3 mile S of Chuckwalla Road on Graham Pass Road. Comment
  RSA615342  Aristida adscensionis George K. Helmkamp, E. A. Helmkamp 1998-2-18 2701 Riverside Colorado Desert: Midland Road, 3.8 miles SE of Midland, Little Maria Mountains Comment
  RSA644185  Lupinus arizonicus George K. Helmkamp 1995-3-16 s.n. Riverside Colorado Desert: below rocky slopes of Coxcomb Mtns., W of Rice Rd., 10.3 miles NE of Desert Center. 200 Comment
  SD129180  Diplachne fusca var. uninervia G. Helmkamp 1989-9-16 Riverside Circa 1/2 mile South of Highway I-8 West of Blythe, in disturbed soil beside alfalfa field at Seeley Road and State Highway 78. 74 Comment
  SD224841  Encelia frutescens G. K. Helmkamp 1998-4-4 3132 Riverside Southern Mojave Desert: junction of CA hwy 62 (Twentynine Palms hwy) & CA hwy 177 (Desert Center-Rice Rd). 456 Comment
  SD225053  Eschscholzia minutiflora G. K. Helmkamp 1998-4-4 3133 Riverside Southern Mojave Deset: junction of CA hwy 62 (Twentynine Palms hwy) & CA hwy 177 (Desert Center- Rice Rd.) 474 Comment
  SD225054  Eschscholzia parishii G. K. Helmkamp 1998-4-4 3160 Riverside Colorado Desert: 7.1 mi. N of Hwy I-10 on Eagle Mtn Rd, to the vicinity of the pumpins station 305 Comment
  SEINET1109560  Ditaxis neomexicana George K. Helmkamp 1998-1 3180 Riverside Sonoran (Colorado) Desert: 2.3 mi. N of Hwy I-10 on nEagle Mtn Rd. 274 Comment
  SEINET272164  Plagiobothrys arizonicus G. K. Helmkamp, E. A. Helmkamp 1997-3-5 1332 B Riverside Riverside Co CA. 2.8 mi SE of Gilman Hot Springs. UTM 10km cell: NH-0E 4N. Gilman Hot Springs. 518 Comment
  SEINET9259737 Image available Pentagramma triangularis subsp. triangularis George K. Helmkamp, Amy Barnes 2013-1 22311 Riverside Sierra Nevada Mountains Foothills: Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 (Murphys 7.5 Q) 974 Comment
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Apr 12 2018
  UCD63462  Eragrostis mexicana subsp. mexicana G. Helmkamp 1997-11-1 2518 Riverside Bermuda Dunes, 41st St. and Sparky (just E of Washington and S of I-10). 30 Comment
  UCD86835  Muhlenbergia microsperma G. K. Helmkamp; E. A. Helmkamp 1998-2-18 2731 Riverside Colorado Desert: Chuckwalla Mts; 10.6 mi SSW of Chuckwalla Valley Rd. on Graham Pass Rd. Comment
  UCR100873  Sphaeralcea ambigua George K. Helmkamp, E. A. Helmkamp 1998-2-18 2700 Riverside Sonoran (Colorado) Desert, Midland Road., 3.8 mi. SE of Midland, Little Maria Mtns. 198 Comment
  UCR101789  Cryptantha intermedia George K. Helmkamp, E. A. Helmkamp 1997-3-5 1322 Riverside 2.8 mi SE of Gilman Hot Springs 518 Comment
  UCR101806  Erigeron foliosus George K. Helmkamp, E. A. Helmkamp 1998-8-17 4438 Riverside Santa Ana Mtns., San Juan Canyon along the Ortega Hwy (Calif. Hwy 74) beside the Orange Co. line 503 Comment
  UCR102913  Chenopodium serotinum George K. Helmkamp 1997-2-1 1292 Riverside Sonoran (Colorado) Desert, Industrial area in Coachella at 54th and Enterprise, c. 2 blocks east of Calif. Hwy 111 .3 Comment
  UCR102924  Camissonia californica George K. Helmkamp 1998-2-5 2641 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Palm Springs, 1.1 mi. west of Calif. Hwy 111 on Tramway Rd. 335 Comment
  UCR102929  Bromus rubens George K. Helmkamp 1998-2-5 2646 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Palm Springs, 1.1 mi. west of Calif. Hwy 111 on Tramway Rd. 335 Comment
  UCR102932  Camissonia pallida George K. Helmkamp 1998-4-3 3077 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Snow Creek area north of Mt. San Jacinto; at edge of stream south of Snow Creek Rd at a point 1.4 mi. south of Calif. Hwy 111 396 Comment
  UCR102942  Eriogonum trichopes var. trichopes George K. Helmkamp 1998-4-4 3142 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR103319  Trixis californica var. californica George K. Helmkamp 1998-2-5 2643 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Palm Springs, 1.1 mi. west of Calif. Hwy 111 on Tramway Rd. 335 Comment
  UCR103547  Amaranthus albus George K. Helmkamp, E. A. Helmkamp 1998-1-17 2530 A Riverside Coachella Valley, Bob Hope Drive, 0.9 mi south of Hwy I-10 43 Comment
  UCR103548  Camissonia claviformis subsp. aurantiaca George K. Helmkamp, E. A. Helmkamp 1998-1-17 2531 Riverside Coachella Valley, Bob Hope Drive, 0.9 mi south of Hwy I-10 43 Comment
  UCR103574  Tidestromia oblongifolia George K. Helmkamp, E. A. Helmkamp 1998-1-17 2547 Riverside Sonoran (Colorado) Desert, Mecca Hills, Box Canyon Road ENE of Mecca and on the north side of the Coachella Canal .3 Comment
  UCR103579  Physalis crassifolia George K. Helmkamp, E. A. Helmkamp 1998-1-17 2549 Riverside Sonoran (Colorado) Desert, Mecca Hills, Box Canyon Road ENE of Mecca and on the north side of the Coachella Canal .3 Comment
  UCR103590  Ditaxis neomexicana George K. Helmkamp, E. A. Helmkamp 1998-2-18 2725 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR103993  Eriophyllum wallacei George K. Helmkamp 1998-4-3 3078 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Snow Creek area north of Mt. San Jacinto; at edge of stream south of Snow Creek Rd at a point 1.4 mi. south of Calif. Hwy 111 396 Comment
  UCR104025  Lupinus arizonicus George K. Helmkamp, E. A. Helmkamp 1998-2-5 2678 Riverside Little San Bernardino Mtns., 3.2 mi. north of junction of Thousand Palms Canyon Road and Dillon Road. 457 Comment
  UCR104780  Dudleya lanceolata George K. Helmkamp 1997-4-3 3071 Riverside Sonoran (Colorado) Desert, Whitewater River, bordering the north side of Hwy I-10; E side of the river. 396 Comment
  UCR104802  Hyptis emoryi George K. Helmkamp 1998-2-5 2649 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Palm Springs, 1.1 mi. west of Calif. Hwy 111 on Tramway Rd. 335 Comment
  UCR104819  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 1998-1-17 2556 Riverside Coachella Valley, alongside Hwy 195 south of Mecca and at the S edge of the Torres Martinez Indian Reservation -30 Comment
  UCR110970  Phlox austromontana George K. Helmkamp 1998-6-27 4107 Riverside Santa Rosa Mtns., 5.8 mi SE of Hwy 74 along Santa Rosa Mtn Rd. (= Santa Rosa Truck Trail = F. S. Rd. 7S02), below Mountain Home Spring 1799 Comment
  UCR110994  Cryptantha micrantha var. lepida George K. Helmkamp 1998-6-27 4113 Riverside Santa Rosa Mtns., 5.8 mi SE of Hwy 74 along Santa Rosa Mtn Rd. (= Santa Rosa Truck Trail = F. S. Rd. 7S02), below Mountain Home Spring 1799 Comment
  UCR116688  Juncus rugulosus George K. Helmkamp 1974-7-14 s.n. Riverside Santa Ana Mtns. region, Ortega Oaks Park on Hwy 74 610 Comment
  UCR116696  Chorizanthe fimbriata George K. Helmkamp 1974-7-16 s.n. Riverside Santa Ana Mtns. region, Ortega Oaks Park on Hwy 74 610 Comment
  UCR122741  Penstemon centranthifolius George K. Helmkamp, E. A. Helmkamp 1998-4-24 3380 Riverside Santa Rosa Mountains, Pinyon Pines along Calif. Hwy 74 between the San Jacinto and Santa Rosa Mountains 1296 Comment
  UCR122747  Bernardia myricifolia George K. Helmkamp, E. A. Helmkamp 1998-4-24 3386 Riverside Santa Rosa Mountains, Palms-to-Pines Hwy (Calif. Hwy 74), 1 mi north of Carrizo Rd near Black Hill 1006 Comment
  UCR122748  Chaenactis fremontii George K. Helmkamp, E. A. Helmkamp 1998-4-24 3385 Riverside Santa Rosa Mountains, Palms-to-Pines Hwy (Calif. Hwy 74), 1 mi north of Carrizo Rd near Black Hill 1006 Comment
  UCR124003  Mentzelia involucrata George K. Helmkamp, E. A. Helmkamp 2001-4-14 6467 Riverside Coachella Valley, Indio Hills, 1.4 mi north of Ramon Rd on Avita Rd (Avita is 2.8 mi east of I-10) 46 Comment
  UCR13972  Polygonum lapathifolium George K. Helmkamp 1973-10-3 s.n. Riverside San Jacinto Mtns., Strawberry Creek, near Idyllwild Comment
  UCR157438  Ditaxis neomexicana George K. Helmkamp 1998-4-4 3180 Riverside Sonoran (Colorado) Desert, 2.3 mi. north of Hwy I-10 on Eagle Mtn Rd. 274 Comment
  UCR29258  Mentzelia involucrata George K. Helmkamp 1983-3-24 383- 01 Riverside Sonoran (Colorado) Desert, N side of Chuckwalla Mtns., Chuckwalla Springs Road, 5 mi. west of Graham Pass Road. 366 Comment
  UCR29781  Pectocarya heterocarpa George K. Helmkamp 1983-3-24 383- 12 Riverside Sonoran (Colorado) Desert, north base of the Little Chuckwalla Mountains, 1.5 miles east of Graham Pass Road 336 Comment
  UCR29849  Psathyrotes ramosissima George K. Helmkamp 1983-3-24 383- 7 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley, at junction of the Graham Pass and Chuckwalla Springs Roads 229 Comment
  UCR37628  Cryptantha racemosa George K. Helmkamp 1984-5-2 D 14 Riverside Little San Bernardino Mountains, Big Morongo Canyon, 3 - 3.5 miles below the caretaker's house at the Big Morongo Preserve 610 Comment
  UCR40591  Eriogonum thomasii George K. Helmkamp 1983-4-5 483- 34 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR59181  Portulaca oleracea George K. Helmkamp 1989-9-16 s.n. Riverside Sonoran (Colorado) Desert, S of Ripley at 32nd Street and Rannells Blvd 75 Comment
  UCR59839  Chloracantha spinosa George K. Helmkamp 1989-9-16 s.n. Riverside Sonoran (Colorado) Desert, W of Blythe, c. 0.5 mi. south of Hwy I-10 ['I-8'] , at Seeley Ave. [=16th Ave.] and Calif. Hwy 78 79 Comment
  UCR59844  Leptochloa uninervia George K. Helmkamp 1989-9-16 s.n. Riverside Sonoran (Colorado) Desert, W of Blythe, c. 0.5 mi. south of Hwy I-10 ['I-8'] , at Seeley Ave. [=16th Ave.] and Calif. Hwy 78 79 Comment
  UCR64000  Pectocarya anisocarpa George K. Helmkamp 1984-5-2 D- 29 Riverside Little San Bernardino Mountains, Big Morongo Canyon, 3 - 3.5 miles below the caretaker's house at the Big Morongo Preserve 610 Comment
  UCR85433  Krameria erecta George K. Helmkamp 1994-4-26 88- 3 Riverside Western Colorado Desert, Indio Hills; north of the landfill on Edom Hill 213 Comment
  UCR85434  Cryptantha angustifolia George K. Helmkamp 1994-4-26 88 6 Riverside Western Colorado Desert, Indio Hills; north of the landfill on Edom Hill 213 Comment
  UCR89563  Cryptantha barbigera George K. Helmkamp 1994-3-10 42 15 Riverside Sonoran (Colorado) Desert, Indio Hills, canyon opening into Coachella Valley, 2 miles east of Thousand Palms on Ramon Road, and 1.3 miles north 122 Comment
  UCR89564  Schismus arabicus George K. Helmkamp 1994-3-10 42- 14 Riverside Sonoran (Colorado) Desert, Indio Hills, canyon opening into Coachella Valley, 2 miles east of Thousand Palms on Ramon Road, and 1.3 miles north 122 Comment
  UCR89670  Pennisetum setaceum George K. Helmkamp 1994-3-10 42- 17 Riverside Sonoran (Colorado) Desert, Indio Hills, canyon opening into Coachella Valley, 2 miles east of Thousand Palms on Ramon Road, and 1.3 miles north 122 Comment
  UCR89773  Dicoria canescens George K. Helmkamp 1994-3-10 42 3 Riverside Sonoran (Colorado) Desert, Indio Hills, canyon opening into Coachella Valley, 2 miles east of Thousand Palms on Ramon Road, and 1.3 miles north 122 Comment
  CAS-BOT-BC523889  Lagophylla glandulosa George K. Helmkamp; E. A. Helmkamp 2012-10-1 19944 Sacramento Eastern Sacramento Valley: Latrobe Rd, 2.4 mi W of the El Dorado Co. line, N of Rancho Murieta 73 Comment
  RSA749731  Holocarpha virgata subsp. virgata George K. Helmkamp, E. A. Helmkamp 2008-10-2 14188 Sacramento Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  RSA749737  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2008-10-2 14189 Sacramento Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  SD197701  Xanthium spinosum G. K. Helmkamp, E. A. Helmkamp 2008-10-30 14290 Sacramento Southern Sacramento Valley: along Highway E13 (Twin Cities Road) 4.4 miles west of its junction with CA-99. 4 Comment
  SD197743  Dysphania ambrosioides G. K. Helmkamp, E. A. Helmkamp 2008-10-30 14285 Sacramento Southern Sacramento Valley; Highway E13, 3.5 miles west of CA-99. 17 Comment
  SD247331  Leontodon taraxacoides George K. Helmkamp, Amy Barnes 2014-4-7 22734 Sacramento Sacramento Valley: along CA-104/Twin Cities Road, west northwest of Rancho Seco Nuclear Generating Station. 56 Comment
  SD247394  Stellaria media George K. Helmkamp, E. A. Helmkamp 2012-2-17 18557 Sacramento Sacramento Valley: along Dillard Road, 0.2 mile south of its junction with CA-16/Jackson Road, southeast of Sacramento. 57 Comment
  SEINET3245890  Acmispon americanus var. americanus G. K. Helmkamp, E. A. Helmkamp 2007-1 12914 Sacramento Sacramento Valley: Along Hwy CA-16, 0.8 mile west of the Amador County line. 85 Comment
  SEINET3412004 Image available Vulpia myuros var. myuros George K. Helmkamp, E. A. Helmkamp 2012-1 18554 Sacramento Sacramento Valley: Rancho Omochumnes, Indio Drive, 0.2 mile ... 64 Comment
  SEINET3821622 Image available Leontodon taraxacoides George K. Helmkamp, E. A. Helmkamp 2010-3-26 15781 Sacramento Sacramento Valley/lower Sierra Nevada Foothills, along CA-16 (Jackson Rd.), 0.2 mile west of the Amador County line (Carbondale 7.5' Q) 82 Comment
  UCD139191  Dichelostemma capitatum subsp. capitatum G. K. Helmkamp; E. A. Helmkamp 2007-3-14 11622 Sacramento Sacramento Valley: Edge of Sierra Nevada foothills; Latrobe Road at Michigan Bar Road, about 3.5 miles west of Latrobe and 0.3 mile west of the El Dorado County line. 146 Comment
  UCR184387  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2007-3-14 11635 Sacramento Sacramento Valley near the edge of Sierra Nevada Mountains foothills, Latrobe Rd about 5.7 miles west of Latrobe and 1.5 miles west of the El Dorado Co. line 110 Comment
  UCR184388  Lepidium nitidum var. nitidum George K. Helmkamp, E. A. Helmkamp 2007-3-14 11636 Sacramento Sacramento Valley near the edge of Sierra Nevada Mountains foothills, Latrobe Rd about 5.7 miles west of Latrobe and 1.5 miles west of the El Dorado Co. line 110 Comment
  UCR189944  Holocarpha virgata subsp. virgata George K. Helmkamp, E. A. Helmkamp 2007-9-9 12909 Sacramento Sacramento Valley, along CA-16, 0.2 mile west of the Amador County line. 91 Comment
  UCR201533  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2008-10-30 14291 Sacramento Southern Sacramento Valley, along Highway E13 (Twin Cities Road) 4.4 miles west of its junction with CA-99 5 Comment
  UCR218944  Holozonia filipes George K. Helmkamp, E. A. Helmkamp 2009-8-28 15542 Sacramento Northern Sacramento Valley, along Latrobe Road, 3.6 miles west of the El Dorado County line, 1 mi. NNW of Rancho Murieta 61 Comment
  UCR233135B  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-3-26 15776 Sacramento Sacramento Valley/lower Sierra Nevada Foothills, along CA-16 (Jackson Rd.), 0.2 mile west of the Amador County line 82 Comment
  UCR253255  Plantago lanceolata George K. Helmkamp, Amy Barnes 2014-4-7 22727 Sacramento Sacramento Valley, Clay East Road, 1 mile east of its junction with CA-104 52 Comment
  UCR253262  Rumex crispus George K. Helmkamp, Amy Barnes 2014-4-7 22720 Sacramento Sacramento Valley, Clay East Road, 1 mile east of its junction with CA-104 52 Comment
  UCR253471  Elymus caput-medusae George K. Helmkamp, Amy Barnes 2014-4-7 22701 Sacramento Sacramento Valley, along CA-104/Twin Cities Rd., 0.7 mile west of the Amador County line 63 Comment
  UCR253581  Festuca myuros var. myuros George K. Helmkamp, Amy Barnes 2014-4-7 22697 Sacramento Sacramento Valley, along CA-104/Twin Cities Rd., 0.7 mile west of the Amador County line 63 Comment
  RSA710034  Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 2002-4-22 7426 San Benito San Andreas rift zone: Rabbit Valley. Along CA-25, 23.7 mi N of CA-198. 549 Comment
  SD148076  Galium porrigens var. porrigens G. K. Helmkamp, E. A. Helmkamp 2001-5-29 6706 San Benito Gabilan Range: 7.1 mi S of San Juan Bautista on Hwy G-1 487 Comment
  SD148236  Hypochaeris glabra G. K. Helmkamp, E. A. Helmkamp 2001-5-29 6713 San Benito 7.1 miles south of San Juan Bautista on Highway G-1. 487 Comment
  SEINET780299  Plectritis brachystemon George K. Helmkamp, E. A. Helmkamp 2002-4-23 7601 San Benito Inner South Coast ranges; County Hwy. J-1 (Panoche Rd.) 15.6 miles SE of its junction with CA-25; along Tres Pinos Creek. 671 Comment
  UCR121593  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2002-4-22 7431 San Benito San Andreas rift zone., Bitterwater Valley along Calif. Hwy 25, 17.6 mi north of Calif. Hwy 198 518 Comment
  UCR121603  Plectritis brachystemon George K. Helmkamp, E. A. Helmkamp 2002-4-22 7602 San Benito San Andreas rift zone, Rabbit Valley, along Calif. Hwy 25; 23.7 mi north of Calif. Hwy 198 549 Comment
  UCR122882  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2001-5-29 6698 San Benito Coast Range, San Andrea Rift Zone, Coalinga Road. about 2 miles southeast of Hernandez [7.26 mi southeast of Hernandez Reservoir] 732 Comment
  UCR123213  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2001-5-30 6727 San Benito Gabilan Range, 11.0 mi south of San Juan Bautista on Hwy G-1; entrance to Fremont Peak State Park 800 Comment
  CLARK-A1045-249  Camissonia brevipes George K. Helmkamp 1978-3-14 San Bernardino Mojave Desert north of Victorville; sandy slope; Hodge 7.5'Q Comment
  CLARK-A1045-354  Ambrosia eriocentra George K. Helmkamp 1977-5-30 San Bernardino between Kelso and Providence Mountains, ca. 2 miles from Kelso junction with Kelbaker Road; ; Flynn 15'Q 761 Comment
  CLARK-A1045-383  Claytonia spathulata var. exigua George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains Keller Peak 7.5'Q Comment
  CLARK-A1045-406  Eriogonum viridescens George K. Helmkamp 1977-4-16 San Bernardino Adelanto 0.5 mile north of Adelanto on US Highway 395; creosote bush scrub area; ; Adelanto 7.5'Q 883 Comment
  CLARK-A1045-413  Lupinus concinnus subsp. optatus George K. Helmkamp 1979-6-3 San Bernardino San Bernardino Mountains 1 mile south of Running Springs, roadside; Harrison Mt. 7.5'Q Comment
  CLARK-A1045-449  Juncus bufonius George K. Helmkamp 1979-6-20 San Bernardino San Bernardino Mountains 3 miles from dump above Baldwin Lake; stream bed; Big Bear City 7.5' Q Comment
  CLARK-A1045-493  Erigeron aphanactis George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains Big Bear City 7.5'Q Comment
  CLARK-A1045-512  Calochortus invenustus George K. Helmkamp 1979-6-5 #1 San Bernardino San Bernardino Mountains north of Baldwin Lake and State Highway 38; sagebrush-juniper area; ; Big Bear City 7.5' Q 2133 Comment
  CLARK-A1045-536  Lotus argophyllus subsp. decorus George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains at the junction of Forest Service road 3N08 and road 3N66Y; dry flat under pines; ; Big Bear City 7.5'Q 2285 Comment
  CLARK-A1045-556  Haplopappus cooperi George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains 5.7 miles east of Cajon Junction, off Interstate Highway 15; Cajon 7.5'Q Comment
  CLARK-A1045-577  Euphorbia palmeri George K. Helmkamp 1979-6-3 #6 San Bernardino San Bernardino Mountains Keller Peak 7.5'Q Comment
  CLARK-A1045-589  Cucurbita foetidissima George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert 11 miles southeast of Kelso along old road through the Providence Mountains; ; Flynn 15'Q 1066 Comment
  CLARK-A1045-592  Dyssodia pentachaeta George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert Flynn 15'Q Comment
  CLARK-A1045-617  Layia glandulosa George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert east slope of Cima Dome, off Cima Road; in joshua tree woodland; ; Mescal Range 15'Q 1462 Comment
  CLARK-A1045-629  Eriogonum reniforme George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert south base of Kelso sand dunes; ; Flynn 15'Q; Glasgow 7.5' Q 761 Comment
  CLARK-A1045-635  Eriogonum reniforme George K. Helmkamp 1977-5-30 San Bernardino Kelso Kelso 15'Q Comment
  CLARK-A1045-655  Erioneuron pulchellum George K. Helmkamp 1977-5-29 San Bernardino Cima Kelso 15'Q Comment
  CLARK-A1045-697  Linanthus breviculus George K. Helmkamp 1977-7-5 San Bernardino San Bernardino Mountains north of State highway 38 at Fish Creek; ; Moonridge 7.5' Q 2133 Comment
  CLARK-A1045-700  Astragalus douglasii George K. Helmkamp 1977-7-5 San Bernardino San Bernardino Mountains north of State highway 38 at Fish Creek; ; Moonridge 7.5'Q 2133 Comment
  CLARK-A1045-717  Pholistoma membranaceum George K. Helmkamp 1978-5-8 San Bernardino Mojave Desert southwest base of mountain; wash, under shrubs; Ord Mts 15'Q Comment
  CLARK-A1045-729  Cryptantha barbigera George K. Helmkamp 1978-5-1 San Bernardino Mojave Desert at camp road; Ord Mts 15'Q Comment
  CLARK-A1045-735  Phacelia crenulata George K. Helmkamp 1978-5-1 San Bernardino Mojave Desert Ord Saddle; Ord Mts 15'Q Comment
  CLARK-A1045-755  Delphinium parishii George K. Helmkamp 1977-5-14 San Bernardino Mesquite Mountains dry wash 1.5 miles east of Winters Pass; ; Clark Mt. 15'Q 1097 Comment
  CLARK-A1045-772  Pedicularis semibarbata George K. Helmkamp 1977-6-6 San Bernardino San Bernardino Mountains meadow at the edge of a drying, temporary pool; ; Keller Peak 7.5'Q 2133 Comment
  CLARK-A1045-797  Linanthus demissus George K. Helmkamp 1978-4-18 #3; 44 San Bernardino Mojave Desert ca. 5 miles north of Slash-X Ranch, south of Barstow off of State highway 247; Barstow SE 7.5'Q Comment
  CLARK-A1045-822  Pholistoma membranaceum George K. Helmkamp 1978-5-6 #1 San Bernardino Mesquite Mountains 1.5 miles east of Pass; Clark Mt. 15'Q Comment
  CLARK-A1045-838  Franseria eriocentra George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains Clark Mt. 15'Q Comment
  CLARK-A1045-858  Ipomopsis polycladon George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains Clark Mt. 15' Q; Mesquite Mountain 7.5' Q Comment
  CLARK-A1045-887  Astragalus lentiginosus var. variabilis George K. Helmkamp 1978-5-6 #1 San Bernardino Mojave Desert 3 miles northeast on Kingston Road; Clark Mtn 15'Q Comment
  CLARK-A1045-9  Langloisia schottii George K. Helmkamp 1977-4-21 San Bernardino Adelanto 2 miles north of Adelanto; east of U.S. Route 395; creosote bush scrub; ; Adelanto 7.5' Q 883 Comment
  HSC79021  Quercus cornelius-mulleri G. K. Helmkamp 1984-4-20 39 San Bernardino TNC Big Morongo Preserve, S of town of Morongo Valley in Big Morongo Canyon, beside pipeline road in upper part of TNC area 765 Comment
  HSC79254  Bebbia juncea var. aspera G. K. Helmkamp 1983-10-8 - 38 San Bernardino TNC Big Morongo Preserve, S of town of Morongo Valley in Big Morongo Canyon, beside the pipeline road in the middle of the TNC owned area. 762 Comment
  RSA564313  Trichostema micranthum George K. Helmkamp 1993-9-22 36 -2 San Bernardino 16.4 miles up Burns canyon from junction of Pipes Canyon and Pioneer Town Roads. 2195 Comment
  RSA567418  Castilleja angustifolia George K. Helmkamp 1993-4-24 s.n. San Bernardino 5 miles north of Kelso, crossing Kelbaker Road 915 Comment
  RSA567420  Lotus heermannii George K. Helmkamp 1993-9-12 22 -9 San Bernardino Pinon-oak woodland in Burns Canyon, in the vicinity of Burns Spring. 1524 Comment
  RSA598412  Chrysothamnus teretifolius George K. Helmkamp 1995-11-10 s.n. San Bernardino TNC [The Nature Conservancy] Big Morongo Preserve, in Big Morongo Cyn, S of town of Morongo Valley. 793 Comment
  RSA614563  Ditaxis neomexicana George K. Helmkamp 1998-3-30 3050 San Bernardino Vicinity of Twentynine Palms; Encelia Rd, 1.0 mi. N of CA hwy 62. 793 Comment
  RSA614898  Astragalus aridus George K. Helmkamp 1998-3-4 3107 San Bernardino S edge of Cadiz Cry alke, 13.1 miles N. of mile-marker 76 on CA hwy 62, E of Twentynine Palms. 183 Comment
  SBBG103900  Oligomeris linifolia G. K. Helmkamp 1993-4-24 San Bernardino Smith Talc Rd, ca. 9 mi E of Tecopa Pass 762 Comment
  SBBG83899  Eriogonum deflexum G. K. Helmkamp 1986-10-18 San Bernardino Whipple Mtns, along Havasu Palms Rd, ca. 3 mi NW of Black Meadow Landing Rd 396 Comment
  SBBG85789  Boerhavia coccinea G. K. Helmkamp 1986-10-18 San Bernardino State Hwy 62, 3.4 mi W of Earp 152 Comment
  SD124773  Allenrolfea occidentalis G. K. Helmkamp 1986-9-27 San Bernardino Along Salt Creek at the Salt Spring Hills, 28 mi. N of Baker on Hwy 127. 185 Comment
  SD124774  Atriplex canescens G. K. Helmkamp 1986-9-27 San Bernardino Along Salt Creek at the Salt Spring Hills, 28 miles north of Baker on Highway 127. 185 Comment
  SD125643  Vicia villosa G. K. Helmkamp 1974-5-28 San Bernardino Along CA 18 south of Running Springs 1524 Comment
  SD140028  Leptosiphon aureus George Helmkamp 1993-4-24 San Bernardino Along Smith Talc Road just west of Tecopa Pass. 1554 Comment
  SD140088  Salvia dorrii var. pilosa Geoge Helmkamp 1993-4-24 San Bernardino Between Kelbaker Road and the Granite Mountains; 5.1 miles northeast of U. S. 40. 1219 Comment
  SD224996  Phacelia crenulata var. ambigua G. K. Helmkamp 1998-3-30 3038 San Bernardino Mojave Desert: vicinity of Twentynine Palms: Encelia Rd, 1.0 mi. N of CA hwy 62. 792 Comment
  SD225076  Eriogonum thomasii G. K. Helmkamp 1998-3-30 3040 San Bernardino Mojave Desert: vicinity of Twentynine Palms; Encelia Rd. 1.0 mi. N of CA hwy 62. 793 Comment
  SEINET2042018 Image available Caulanthus cooperi George Helmkamp, E. A. Helmkamp 2001-3-24 6309 San Bernardino South Central Mojave Desert; 0.3 mi W of CA-247 on Pipes Cyn Rd. 1037 Comment
  SEINET2042029 Image available Palafoxia arida George Helmkamp, E. A. Helmkamp 2001-3-30 6382 San Bernardino Mojave Desert; CA-62, 16.2 mi E of Utah Tr. (29 Palms) near Dale Lake. 366 Comment
  SEINET270121  Gutierrezia microcephala G. Helmkamp 1993-9-12 23 -20 San Bernardino Dry slope along the edge of Burns Canyon 1372 Comment
  SEINET3093273 Image available Camissonia refracta G. Helmkamp 1995-3-24 sn San Bernardino Mojave Desert: 1.6 miles W of Hwy 127 at a point 0.9 mi N of Baker. 351 Comment
  UCD119560  Nama demissa var. demissa G. K. Helmkamp; E. A. Helmkamp 2001-3-30 6418 San Bernardino Eastern Mojave Desert: US-95, 8.5 mi south of I-40. 351 Comment
  UCR101114  Nama demissa George K. Helmkamp, E. A. Helmkamp 1998-2-26 2752 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101123  Chaenactis stevioides George K. Helmkamp, E. A. Helmkamp 1998-2-26 2756 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101625  Rafinesquia neomexicana George K. Helmkamp, E. A. Helmkamp 1998-2-26 2767 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101662  Camissonia claviformis subsp. aurantiaca George K. Helmkamp, E. A. Helmkamp 1998-2-26 2800 San Bernardino Eastern Mojave Desert, Saltbush scrub flat east of Soda Lake and 5.9 mi SSE of Baker on a farm road leading to Little Cowhole Mtn. 299 Comment
  UCR102954  Eriophyllum wallacei George K. Helmkamp, E. A. Helmkamp 1998-3-16 2836 San Bernardino Mojave Desert, 50 ft. north of the boundary of Joshua Tree National Park at the S end of Sunkist Rd (E of town of Joshua Tree) 884 Comment
  UCR102959  Ditaxis neomexicana George K. Helmkamp 1998-3-30 3053 San Bernardino Mojave Desert, E of town of Joshua Tree & south of Copper Mtn, 0.4 mi. east of the S end of Kerr Rd near Joshua Tree National Park 884 Comment
  UCR102984  Astragalus aridus George K. Helmkamp 1998-3-30 3017 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR102989  Eriophyllum pringlei George K. Helmkamp, E. A. Helmkamp 1998-3-16 2837 San Bernardino Mojave Desert, 50 ft. north of the boundary of Joshua Tree National Park at the S end of Sunkist Rd (E of town of Joshua Tree) 884 Comment
  UCR103302  Camissonia claviformis subsp. claviformis George K. Helmkamp 1998-3-30 2998 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR103314  Cryptantha micrantha George K. Helmkamp 1998-3-30 3055 San Bernardino Mojave Desert, E of town of Joshua Tree & south of Copper Mtn, 0.4 mi. east of the S end of Kerr Rd near Joshua Tree National Park 884 Comment
  UCR103323  Thysanocarpus curvipes George K. Helmkamp 1998-3-30 3054 San Bernardino Mojave Desert, E of town of Joshua Tree & south of Copper Mtn, 0.4 mi. east of the S end of Kerr Rd near Joshua Tree National Park 884 Comment
  UCR104055  Malacothrix glabrata George K. Helmkamp 1998-4-4 3122 San Bernardino Mojave Desert, S edge of Cadiz Dry Lake, 13.1 mi. north of mile-marker 76 on Calif. hwy 62 (Twentynine Palms Hwy), east of Twentynine Palms 183 Comment
  UCR104062  Nama demissa var. demissa George K. Helmkamp 1998-4-4 3103 San Bernardino West Mojave Desert, Dale Lake, 1.8 mi. west of Iron Age Rd & 0.7 mi. north of Calif. hwy 62 366 Comment
  UCR104823  Dyssodia cooperi George K. Helmkamp, E. A. Helmkamp 1998-3-16 2832 San Bernardino Mojave Desert, 50 ft. north of the boundary of Joshua Tree National Park at the S end of Sunkist Rd (E of town of Joshua Tree) 884 Comment
  UCR104883  Camissonia claviformis George K. Helmkamp 1998-4-4 3121 San Bernardino Mojave Desert, S edge of Cadiz Dry Lake, 13.1 mi. north of mile-marker 76 on Calif. hwy 62 (Twentynine Palms Hwy), east of Twentynine Palms 183 Comment
  UCR118283  Lepidium lasiocarpum var. lasiocarpum George K. Helmkamp, E. A. Helmkamp 1998-4-19 3346 San Bernardino Mojave Desert, northwest side of East Cronese Lake, about 15 miles west of Baker 335 Comment
  UCR118292  Abronia villosa var. villosa George K. Helmkamp, E. A. Helmkamp 1998-4-19 3363 San Bernardino Mojave Desert, northwest side of East Cronese Lake, about 15 miles west of Baker 335 Comment
  UCR121861  Anisocoma acaulis George K. Helmkamp, E. A. Helmkamp 2001-3-24 6304 San Bernardino Southcentral Mojave Desert, 0.3 mile west of CA Hwy 247 on Pipes Canyon Road 1037 Comment
  UCR121867  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 2001-3-24 6299 San Bernardino Southcentral Mojave Desert, 0.3 mile west of CA Hwy 247 on Pipes Canyon Road 1037 Comment
  UCR122575  Cryptantha barbigera George K. Helmkamp, E. A. Helmkamp 2001-3-24 6311 San Bernardino Southcentral Mojave Desert, 0.3 mile west of CA Hwy 247 on Pipes Canyon Road 1037 Comment
  UCR122774  Chaenactis fremontii George K. Helmkamp, E. A. Helmkamp 1998-3-16 2858 San Bernardino Mojave Desert, north of Calif. Hwy 62 between Joshua Tree and 29 Palms; north on Leer Ave and 0.9 mile E on Amboy Rd. 732 Comment
  UCR122790  Encelia farinosa George K. Helmkamp, E. A. Helmkamp 2001-3-31 6347 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122803  Pectocarya platycarpa George K. Helmkamp, E. A. Helmkamp 2001-3-31 6329 San Bernardino Eastern Mojave Desert, Goffs Rd, 8.1 mi east of Goffs 610 Comment
  UCR122822  Camissonia claviformis subsp. aurantiaca George K. Helmkamp, E. A. Helmkamp 2001-3-31 6370 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122935  Atrichoseris platyphylla George K. Helmkamp, E. A. Helmkamp 2001-3-30 6417 San Bernardino Eastern Mojave Desert, US-95, 8.5 mi south of I-40. 351 Comment
  UCR122945  Camissonia claviformis subsp. aurantiaca George K. Helmkamp, E. A. Helmkamp 2001-3-30 6443 San Bernardino Eastern Mojave Desert, 13.5 mi north of Calif. Hwy 62 along US-95 then 0.1 mi E 274 Comment
  UCR122964  Chaenactis stevioides George K. Helmkamp, E. A. Helmkamp 2001-3-30 6446 San Bernardino Eastern Mojave Desert, 13.5 mi north of Calif. Hwy 62 along US-95 then 0.1 mi E 274 Comment
  UCR123229  Eriophyllum lanosum George K. Helmkamp, E. A. Helmkamp 2001-3-30 6436 San Bernardino Eastern Mojave Desert, 13.5 mi north of Calif. Hwy 62 along US-95 then 0.1 mi E 274 Comment
  UCR123985  Brandegea bigelovii George K. Helmkamp, E. A. Helmkamp 2001-3-30 6394 San Bernardino Mojave Desert, CA Hwy 62, 16.2 mi east of Utah Trail (Twentynine Palms) near Dale Lake 366 Comment
  UCR124077  Palafoxia arida var. arida George K. Helmkamp, Elizabeth Helmkamp 2000-4-4 5355 San Bernardino Colorado River, Beside the California-Arizona border near Topock, AZ. 152 Comment
  UCR124078  Perityle emoryi George K. Helmkamp, Elizabeth Helmkamp 2000-4-4 5354 San Bernardino Colorado River, Beside the California-Arizona border near Topock, AZ. 152 Comment
  UCR124082  Geraea canescens George K. Helmkamp, Elizabeth Helmkamp 2000-4-4 5359 San Bernardino Colorado River, Beside the California-Arizona border near Topock, AZ. 152 Comment
  UCR124093  Sisymbrium irio George K. Helmkamp, Elizabeth Helmkamp 2000-4-4 5348 San Bernardino Sonoran (Colorado) Desert, Sacramento Spring. Along Calif. Hwy 95, 1.6 mi north of Interstate-40 396 Comment
  UCR124175  Cryptantha dumetorum George K. Helmkamp, E. A. Helmkamp 2001-3-30 6386 San Bernardino Mojave Desert, CA Hwy 62, 16.2 mi east of Utah Trail (Twentynine Palms) near Dale Lake 366 Comment
  UCR130977  Nama demissa George K. Helmkamp, E. A. Helmkamp 1998-5-3 3527 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR130978  Ephedra funerea George K. Helmkamp, E. A. Helmkamp 1998-5-3 3528 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR130982  Eriogonum brachypodum George K. Helmkamp, E. A. Helmkamp 1998-5-3 3522 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR130993  Eriogonum fasciculatum var. polifolium George K. Helmkamp, E. A. Helmkamp 1998-5-3 3508 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR136215  Arceuthobium divaricatum George K. Helmkamp, E. A. Helmkamp 1999-9-30 5312 San Bernardino East side San Bernardino Mountains., 7.3 mi up Burns cyn Rd from Rimrock Rd (NW of Pioneertown) 1799 Comment
  UCR14650  Arabis perennans George K. Helmkamp 1975-6-6 s.n. San Bernardino Eastern Mojave Desert, Clark Mountain [area, Mescal Range], Mountain Pass, 0.5 mi south of Interstate 15 1463 Comment
  UCR14659  Cryptantha virginensis George K. Helmkamp 1975-6-6 s.n. San Bernardino Eastern Mojave Desert, Clark Mountain [area, Mescal Range], Mountain Pass, 0.5 mi south of Interstate 15 1463 Comment
  UCR15363  Chaetopappa aurea George K. Helmkamp 1977-6-5 s.n. San Bernardino San Bernardino Mtns, c. 6 mi. east of jct of Cajon Rd & I-15 Comment
  UCR15376  Arenaria douglasii George K. Helmkamp 1977-6-5 s.n. San Bernardino San Bernardino Mtns, area west of Hwy-38 at Snow Valley 2134 Comment
  UCR15922  Navarretia peninsularis George K. Helmkamp, E. A. Helmkamp 1979-5-22 s.n. San Bernardino San Bernardino Mtns., edge of sagebrush area just north of Baldwin Lake 2134 Comment
  UCR21382  Perideridia parishii George K. Helmkamp 1974-6-22 s.n. San Bernardino San Bernardino Mtns, Keller Peak Road 2134 Comment
  UCR37502  Ambrosia dumosa George K. Helmkamp 1984-4-20 840420- 33 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37505  Schoenoplectus americanus George K. Helmkamp 1984-4-20 840420- 54 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37508  Euphorbia albomarginata George K. Helmkamp 1984-4-29 A- 15 a San Bernardino Little San Bernardino Mtns., Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters 701 Comment
  UCR37549  Rorippa nasturtium-aquaticum George K. Helmkamp 1984-4-20 840420- 53 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37622  Chenopodium californicum George K. Helmkamp 1984-4-20 840420- 52 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37625  Descurainia pinnata George K. Helmkamp 1984-4-20 840420- 22 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37646  Chaenactis fremontii George K. Helmkamp 1984-4-20 840420- 12 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37721  Lotus corniculatus George K. Helmkamp 1984-4-29 A- 52 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Big Morongo Preserve of The Nature Conservancy, between the TNC parking lot and Covington Park 762 Comment
  UCR39185  Lolium perenne subsp. multiflorum George K. Helmkamp 1985-5-10 480 San Bernardino Little San Bernardino Mountains, At entrance to Big Morongo Nature Conservancy Preserve, SE of town of Morongo Valley 762 Comment
  UCR45191  Atriplex canescens George K. Helmkamp 1986-9-27 s.n. San Bernardino Mojave Desert, Along Salt Creek at the Salt Spring Hills 28 mi. north of Baker on Hwy 127 183 Comment
  UCR45846  Suaeda moquinii George K. Helmkamp 1986-9-27 s.n. San Bernardino Northern Mojave Desert, Along the Amargosa River, 1 mi. north of Dumont Dunes and 5.5 mi. east of Hwy 127 on the road to the Sperry ruins. 244 Comment
  UCR48051  Caulanthus inflatus George K. Helmkamp 1987-3-24 s.n. San Bernardino Western Mojave Desert, SW base of Fremont Peak, about 6.5 mi east of US Hwy 395 976 Comment
  UCR50848  Lessingia glandulifera var. glandulifera George K. Helmkamp 1988-4-29 s.n. San Bernardino Eastern Mojave Desert, Fenner Valley between Hackberry Mtns & Vontrigger Hills, 11.3 mi NNW of Goffs 1100 Comment
  UCR51280  Salvia columbariae George K. Helmkamp 1988-4-29 s.n. San Bernardino Eastern Mojave Desert, Fenner Valley between Hackberry Mtns & Vontrigger Hills, 11.3 mi NNW of Goffs 1100 Comment
  UCR51289  Psilostrophe cooperi George K. Helmkamp 1988-4-29 s.n. San Bernardino Eastern Mojave Desert, Fenner Valley between Hackberry Mtns & Vontrigger Hills, 11.3 mi NNW of Goffs 1100 Comment
  UCR78903  Lotus purshianus George K. Helmkamp 1993-9-22 34- 17 San Bernardino San Bernardino Mtns., 6.7 mi. up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 1529 Comment
  UCR79290  Ambrosia acanthicarpa George K. Helmkamp 1993-9-22 34- 10 San Bernardino San Bernardino Mtns., 6.7 mi. up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 1529 Comment
  UCR79299  Tetradymia stenolepis George K. Helmkamp 1993-9-12 23- 15 San Bernardino San Bernardino Mtns., edge of Burns Canyon 1375 Comment
  UCR79302  Gutierrezia microcephala George K. Helmkamp 1993-9-12 23- 20 San Bernardino San Bernardino Mtns., edge of Burns Canyon 1375 Comment
  UCR79305  Lotus heermannii George K. Helmkamp 1993-9-12 22- 09 San Bernardino San Bernardino Mtns, Burns Canyon, in the vicinity of Burns Spring 1524 Comment
  UCR79308  Solidago confinis George K. Helmkamp 1993-9-22 34- 06 San Bernardino San Bernardino Mtns., 6.7 mi. up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 1529 Comment
  UCR87072  Platystemon californicus George K. Helmkamp, E. A. Helmkamp 1995-5-13 s.n. San Bernardino Southern Mojave Desert, Yucca Valley, N on Old Woman Springs Rd., to Cobalt Ave. near the top of the grade, left on Cobalt, right on Pine and left on Gold Nugget 1037 Comment
  UCR91712  Carex subfusca George K. Helmkamp 1996-6-11 1127 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR91715  Pulicaria paludosa George K. Helmkamp 1995-12-6 s.n. San Bernardino Little San Bernardino Mtns., Big Morongo Wildlife Preserve; beside the Willow Trail. 777 Comment
  UCR91972  Poa pratensis subsp. pratensis George K. Helmkamp 1996-6-11 1129 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR91975  Rumex salicifolius George K. Helmkamp 1996-6-11 1122 San Bernardino San Bernardino Mtns, at the SW end of Baldwin Lake 1433 Comment
  UCR93390  Galium stellatum subsp. eremicum George K. Helmkamp 1995-3-16 s.n. San Bernardino Mojave Desert, north of Coxcomb Mts., Twentynine Palms (62) Hwy, 11.8 miles west of Rice Road (Hwy 177) 381 Comment
  UCR93399  Cryptantha maritima George K. Helmkamp 1993-4-24 s.n. San Bernardino Eastern Mojave Desert, bajada between the Granite Mtns & Kelbaker Rd, 5.1 mi. north of Hwy I-40 1220 Comment
  UCR97407  Cryptantha decipiens George K. Helmkamp 1997-4-20 1642 San Bernardino Mojave Desert, Morongo Valley, vacant lot at Vista Dr. near Pinyon Ave. 1006 Comment
  UCR98127  Penstemon palmeri var. palmeri George K. Helmkamp, E. A. Helmkamp 1997-4-29 1667 San Bernardino Mojave Desert, Kingston Mtns, Smith Talc Rd. west of the summit, between Beck Spring & Crystal Spring 1350 Comment
  UCR99049  Stylocline micropoides George K. Helmkamp 1993-4-24 s.n. San Bernardino Eastern Mojave Desert, south side of Kelso sand dunes 701 Comment
  VVC224  Lupinus latifolius var. parishii G. K. Helmkamp 1996-6-11 1142 San Bernardino San Bernardino Mtns., 1.2 mi. SW of Tulip Ave, City of Big Bear Lake 2143 Comment
  VVC572  Poa pratensis G. K. Helmkamp 1996-6-11 1129 San Bernardino San Bernardino Mtns., 1.2 mi. SW of Tulip Ave, City of Big Bear Lake 2143 Comment
  VVC918  Monolepis nuttalliana G. K. Helmkamp, E. A. Helmkamp 1998-4-9 3299 San Bernardino Mojave Desert, NW of Barstow; 2.2 mi. NE of CA Hwy 58 on unnamed dirt road 2.8 mi. W of Waterman Rd 701 Comment
  CLARK-A1045-600  Monardella odoratissima subsp. australis George K. Helmkamp 1977-10-22 San Bernardino San Bernardino Mountains along Robin Oaks Road; ; Forest Falls 7.5'Q 1554 Comment
  CLARK-A1045-1271  Sparganium eurycarpum George K. Helmkamp 1979-6-6 San Diego Pala Creek along Creek, 3 miles north of Pala; Pechanga 7.5'Q Comment
  CLARK-A1045-1295  Malperia tenuis George K. Helmkamp 1977-1-22 San Diego Anza-Borrego Desert State Park Tierra Blanca Mountains; canyon near Mountain Palm Springs campground; ; Sweeney Pass 7.5'Q 304 Comment
  CLARK-A1045-1308  Cheilanthes covillei George K. Helmkamp 1977-3-24 San Diego Cleveland Mountains south base of Bucksnort Mountains, under rock ledge; ; Warner Springs 7.5'Q 1371 Comment
  CLARK-A1045-1311  Nemacaulis denudata George K. Helmkamp 1979-6-29 San Diego Imperial Beach .25 mile north of Mexico, sea beach sand Comment
  CLARK-A1045-907  Haplopappus cuneatus George K. Helmkamp 1977-3-24 San Diego Cleveland Mountains south of Bucksnort Mountains; rocky edge of wash; ; Warner Springs 7.5'Q 1371 Comment
  CLARK-A1045-910  Bromus tectorum George K. Helmkamp 1977-3-24 San Diego Cleveland Mountains roadside; Beauty Mountain 7.5'Q Comment
  RSA628390  Lasthenia gracilis George K. Helmkamp, E. A. Helmkamp 1999-4-15 4641 San Diego Barrett Hill Rd off of Hwy-79, ca 6.5 mi SW of Warner Hot Springs 838 Comment
  UCR115802  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2000-10-17 6224 San Diego Peninsular Range, Lawrence Welk Commercial Complex, c. 1.5 miles west of the Oat Hills, and south of Moosa Canyon 299 Comment
  UCR116687  Elymus condensatus George K. Helmkamp 1974-6-29 s.n. San Diego Peninsular Range, 5 miles NW of Warner Springs [upper San Luis Rey River watershed near Puerta La Cruz] 915 Comment
  UCR130631  Hedypnois cretica George K. Helmkamp, E. A. Helmkamp 1999-4-15 4653 San Diego Peninsular Ranges, c. 5 mi NE of Alpine. Old Viejas Grade at the E side of Viejas Mtn., 0.6 mi east of the Viejas Indian Reservation 854 Comment
  UCR130637  Pectocarya penicillata George K. Helmkamp, E. A. Helmkamp 1999-4-15 4644 San Diego Between Lake Henshaw & Matagual Valley, Barrett Hill Rd off of Hwy-79, c. 6.5 mi SW of Warner Hot Springs 838 Comment
  UCR130638  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 1999-4-15 4657 b San Diego Peninsular Ranges, c. 5 mi NE of Alpine. Old Viejas Grade at the E side of Viejas Mtn., 0.6 mi east of the Viejas Indian Reservation 854 Comment
  UCR130641  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 1999-4-18 4698 San Diego Between Lake Henshaw & Matagual Valley, Barrett Hill Rd off of Hwy-79, c. 6.5 mi SW of Warner Hot Springs. 838 Comment
  UCR130647  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 1999-4-18 4704 San Diego Between Lake Henshaw & Matagual Valley, Barrett Hill Rd off of Hwy-79, c. 6.5 mi SW of Warner Hot Springs. 838 Comment
  UCR130648  Ceanothus perplexans George K. Helmkamp, E. A. Helmkamp 1999-4-18 4705 San Diego Laguna Mtns., along S-1 (Sunrise Hwy) 2.3 mi NW of Mt. Laguna 1646 Comment
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Sep 25 2013
  UCR130674  Gilia diegensis George K. Helmkamp, E. A. Helmkamp 1999-4-15 4638 San Diego Between Lake Henshaw & Matagual Valley, Barrett Hill Rd off of Hwy-79, c. 6.5 mi SW of Warner Hot Springs 838 Comment
  UCR130679  Lupinus concinnus George K. Helmkamp, E. A. Helmkamp 1999-4-15 4642 San Diego Between Lake Henshaw & Matagual Valley, Barrett Hill Rd off of Hwy-79, c. 6.5 mi SW of Warner Hot Springs 838 Comment
  UCR130690  Helianthemum scoparium var. aldersonii George K. Helmkamp, E. A. Helmkamp 1999-4-17 4684 San Diego Peninsular Ranges, Barrett-Smith Rd between Barrett Junction & Barrett School Rd. NE of Calif. Hwy 94 268 Comment
  UCR134301  Melinis repens George K. Helmkamp 1974-7-21 s.n. San Diego Southern Coast, City of San Diego, junction of Clairemont Mesa Blvd and US-395 61 Comment
  UCR14519  Plantago patagonica George K. Helmkamp 1974-5-21 s.n. San Diego Peninsular Range, Julian Comment
  CAS-BOT-BC526871  Plagiobothrys stipitatus var. micranthus George K. Helmkamp; Elizabeth Helmkamp 2013-3-26 20226 San Joaquin East end of San Joaquin Valley: Escalon Bellota Rd (J6), 6.1 mi S of its jct with CA-26, 0.52 mi S of Copperopolis Rd 51 Comment
  CDA25741  Quercus wislizeni var. wislizeni G. K. Helmkamp, E. A. Helmkamp 2007-10-13 13090 San Joaquin Northern San Joaquin Valley; Along Highway CA-88, 1.0 mile southwest of Clements at Disch Road. Comment
  HSC104228  Amsinckia intermedia G. K. Helmkamp 2014-3-18 22574 San Joaquin San Joaquin Valley: along Hwy. CA-88 on the southwest side of the border with Calaveras County, 7.1 mi. SW of Ione 87 Comment
  RSA749834  Eleusine tristachya George K. Helmkamp, E. A. Helmkamp 2008-10-9 14227 San Joaquin junction of Collier Road and CA-88, 1.1 miles north of the junction of CA-12 and CA-88, NE of Lodi 35 Comment
  SD240974  Chenopodium George K. Helmkamp, E. A. Helmkamp 2011-10-15 18430 San Joaquin San Joaquin Valley: along CA-26, 0.6 mile northeast of Escalon-Bellota Road (Linden 7.5'Q) 39 Comment
  SD243138  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2011-3-12 17059 San Joaquin Northern San Joaquin Valley: Collier Road, 0.2 mile east of its junction with Suttenfield Road, 9.4 miles NE (50a^z) of Lodi (Lockeford 7.5'Q) 39 Comment
  UCR194726  Grindelia camporum var. camporum George K. Helmkamp, E. A. Helmkamp 2007-10-13 13079 San Joaquin Northern San Joaquin Valley, along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road 37 Comment
  UCR201901  Eleusine tristachya George K. Helmkamp, E. A. Helmkamp 2008-10-9 14227 San Joaquin San Joaquin Valley, junction of Collier Road and CA-88, 1.1 miles north of the junction of CA-12 and CA-88, NE of Lodi 35 Comment
  UCR201926  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2008-10-9 14229 San Joaquin San Joaquin Valley, junction of Collier Road and CA-88, 1.1 miles north of the junction of CA-12 and CA-88, NE of Lodi 35 Comment
  UCR232267  Spergula arvensis subsp. arvensis George K. Helmkamp, E. A. Helmkamp 2011-3-12 17079 San Joaquin Upper San Joaquin Valley, Buena Vista Road, 0.1 mile east of its junction with CA-88 67 Comment
  UCR232268  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2011-3-12 17080 San Joaquin Upper San Joaquin Valley, Buena Vista Road, 0.1 mile east of its junction with CA-88 67 Comment
  UCR232677  Chenopodium George K. Helmkamp, E. A. Helmkamp 2011-10-15 18430 San Joaquin San Joaquin Valley, along CA-26, 0.6 mile northeast of Escalon-Bellota Rd. 40 Comment
  UCR232678  Croton setiger George K. Helmkamp, E. A. Helmkamp 2011-10-15 18429 San Joaquin San Joaquin Valley, along CA-26, 0.6 mile northeast of Escalon-Bellota Rd. 40 Comment
  UCR235295  Erigeron canadensis George K. Helmkamp, E. A. Helmkamp 2011-11-21 18475 San Joaquin Northeastern San Joaquin Valley, along Johnson Road, 0.8 mile south of its junction with CA-12, NE of Lockeford, SW of Camanche Reservoir 53 Comment
  UCR238402  Hordeum murinum subsp. murinum George K. Helmkamp, E. A. Helmkamp 2012-4-7 18716 San Joaquin San Joaquin Valley, along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden 52 Comment
  UCR238414  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2012-4-7 18714 San Joaquin San Joaquin Valley, along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden 52 Comment
  UCR242783  Ranunculus muricatus George K. Helmkamp, E. A. Helmkamp 2010-4-7 15830 San Joaquin Northeast San Joaquin Valley, Collier Road, 0.1 mile west of its junction with CA-88, 1.83 mi. NE (27 deg. ) of Clements 47 Comment
  UCR253465  Festuca perennis George K. Helmkamp 2014-3-18 22587 San Joaquin San Joaquin Valley, along Collier Road, 1.1 mile east of Tully Road, 10.4 mi. ESE (103 deg. ) of Galt 40 Comment
  UCR253493  Amaranthus albus George K. Helmkamp, Elizabeth Helmkamp 2012-10-26 20070 San Joaquin San Joaquin Valley, Rock Creek, at East Sonora Road, 1.3 miles southeast of CA-4 50 Comment
  UCR253606  Avena fatua George K. Helmkamp 2014-3-18 22573 San Joaquin San Joaquin Valley, along Hwy CA-88 on the southwest side of the border with Calaveras County, 7.1 mi. SW (220 deg. ) of Ione 87 Comment
  UCR253610  Lupinus bicolor George K. Helmkamp 2014-3-18 22571 San Joaquin San Joaquin Valley, along Hwy CA-88 on the southwest side of the border with Calaveras County, 7.1 mi. SW (220 deg. ) of Ione 87 Comment
  CAS-BOT-BC378573  Ranunculus californicus var. californicus G. K. Helmkamp 1997-3-8 1463 San Luis Obispo SE of Los Osos; Swift Ranch, starting ca. 2 mi S of Los Osos Vly. Rd. on Clark Vly. Rd. 000000000000000000000000 107 Comment
  CAS-BOT-BC65023  Cakile maritima G. K. Helmkamp 2004-3-23 8390 San Luis Obispo ENE of Nipomo. 1.5 mi SW of Rancho Road along Dana Foothill Road 171 Comment
  CDA4341  Trifolium hirtum G. K. Helmkamp 2004-3-13 8361 San Luis Obispo Central Coast; Nipomo Mesa, along Hwy CA-1 (Mesa View Dr.), 0.4 mi S of Halcyon Rd, S of Arroyo Grande Comment
  CDA4392  Vicia sativa subsp. sativa G. K. Helmkamp 2004-2-11 8287 San Luis Obispo Central Coast; Nipomo Mesa, Pomeroy Rd, 1.1 mi N of Willow Rd. Comment
  CLARK-A1045-1346  Chorizanthe californica George K. Helmkamp 1978-6-3 San Luis Obispo Los Osos Montana de Oro State Park, coastal strand; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1355  Vicia californica George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road, 3.3 miles east of Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1360  Ranunculus californicus George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay pasture, Turri Road, 3 miles east of Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1363  Orthocarpus densiflorus George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay grassy field off Turri Road, 3 miles east of Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1377  Phacelia cicutaria subsp. hispida George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road at Morro Bay; Morro Bay S 7.5'Q Comment
  IRVC28937  Clematis ligusticifolia G. K. Helmkamp 2003-9-8 8122 San Luis Obispo Saltwater ocean inlet 0.2 mi SW of Oceano Airport Central Coast 6 Comment
  IRVC28938  Jaumea carnosa G. K. Helmkamp 2003-9-8 8124 San Luis Obispo Saltwater ocean inlet 0.2 mi SW of Oceano Airport Central Coast 6 Comment
  IRVC28948  Stephanomeria virgata subsp. virgata G. K. Helmkamp 2003-9-21 8161 San Luis Obispo Los Berros Rd, 0.9 mi SE of El Campo Rd., SE of Arroyo Grande Central Coast 46 Comment
  IRVC29193  Xanthium spinosum G. K. Helmkamp, E. A. Helmkamp 2004-8-14 8782 San Luis Obispo junction of Thompson Rd. and Mehlschau Rd., NE of Nipomo Central Coast 107 Comment
  IRVC29208  Croton setigerus G. K. Helmkamp, E. A. Helmkamp 2004-10-1 8830 San Luis Obispo 3.4 miles east of Lopez Lake along Hi Mountain Road and beside Arroyo Grande Creek Central Coast; Outer South Coast Range 171 Comment
  IRVC29230  Chenopodium berlandieri G. K. Helmkamp, E. A. Helmkamp 2004-10-8 8851 San Luis Obispo Biddle Regional Park, 7 mi NE of Arroyo Grande along Lopez Drive and Arroyo Grande Creek Central Coast 136 Comment
  RSA0012607  Eucalyptus globulus George K. Helmkamp, E. A. Helmkamp 2000-3-15 5337 San Luis Obispo Central Coast: south end of Morro Bay at the west end of Howard St. in Los Osos. 6 Comment
  RSA0026052  Mirabilis jalapa George K. Helmkamp 2003-10-8 8203 San Luis Obispo Central Coast: base of Nipomo Mesa 0.25 miles SW of Halcyon Rd along an unnamed road near the railroad crossing. 15 Comment
  RSA0029605  Rumex crispus George K. Helmkamp 2003-7-31 8059 San Luis Obispo Central Coast: west edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road 15 Comment
  RSA613755  Barbarea verna George K. Helmkamp, E. A. Helmkamp 1997-3-8 1435 San Luis Obispo NE of Los Osos Valley Road on Turri Road. 30 Comment
  RSA615332  Lotus wrangelianus George K. Helmkamp, E. A. Helmkamp 1998-4-8 3214 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with CA hwy 33 (roughly W of Maricopa). 579 Comment
  RSA667362  Astragalus trichopodus var. lonchus George K. Helmkamp 2001-4-29 6576 San Luis Obispo Irish Hills: Calrk Valley Rd., 3.8 mi S f Los Osos Valley Rd (E of Los Osos). 213 Comment
  RSA709066  Mucronea californica George K. Helmkamp, E. A. Helmkamp 2005-6-12 9654 San Luis Obispo Central Coast Range: Along Hwy. CA-58 (Carrizo Hwy), 22.2 miles east of Santa Margarita; near Camatta Creek. 552 Comment
  RSA710039  Chorizanthe angustifolia George K. Helmkamp 2002-4-20 7462 -A San Luis Obispo Central Coast: 0.2 mi NW of Monarch Lane, Los Osos. 9 Comment
  RSA715276  Ranunculus George K. Helmkamp 2004-6-9 8614 San Luis Obispo Central Coast: Mesa Dunes mobile home park along Mesa view Drive (hwy CA-1), 0..3 mi S of Halcyon Rd. 76 Comment
  SD148137  Phacelia ciliata G. K. Helmkamp, E. A. Helmkamp 2001-5-2 6637 San Luis Obispo La Panza Range: CA-58, 33 miles east of Santa Margarita near San Juan Creek 487 Comment
  SD167197  Uropappus lindleyi G. K. Helmkamp, E. A. Helmkamp 2005-3-5 9024 San Luis Obispo Outer South Coast Ranges; Santa Lucia Wilderness north of Lopez Lake, Upper Lopez Canyon road, 5.5 miles north of junction with Lopez Road. 334 Comment
  SD178099  Bromus catharticus G. K. Helmkamp 2004-3-21 8386 San Luis Obispo Mesa Dunes Mobile Home Park along Mesa View Dr., 0.2 mile south of the junction of Hlacyon Road, southeast of Oceano. 60 Comment
  SD186109  Senecio vulgaris G. K. Helmkamp 2003-7-31 8065 San Luis Obispo West edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road. 14 Comment
  SD186273  Oxalis corniculata G. K. Helmkamp 2003-7-31 806 San Luis Obispo West edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road. 14 Comment
  SD233825  Astragalus nuttallii var. nuttallii G. Helmkamp 1996-5-25 1060 San Luis Obispo Dried vernal pools between CA-1 and the ocean 1.5 miles north of Piedras Blancas lighthouse near the northern border of the county 49 Comment
  SEINET1004403  Erodium moschatum George K. Helmkamp 2004-1 8299 San Luis Obispo Central Coast: Mesa Dunes Mobile Home Park, along Mesa View Dr. (Hwy CA-1), 0.2 mi S of the jct with Halcyon Rd. 61 Comment
  SEINET1007996  Camissonia strigulosa G. K. Helmkamp, E. A. Helkamp 2005-1 9365 San Luis Obispo Central Coast: Corbett Canyon, 2.3 miles north of Hwy CA-227 in Arroyo Grande. 81 Comment
  SEINET269228 Image available Brachypodium hybridum G. Helmkamp 1996-5-24 1013 San Luis Obispo State Park System north of Turri Rd. and 1.5 miles of South Bay Blvd. 95 Comment
  SEINET3815700 Image available Lupinus truncatus George K. Helmkamp, E. A. Helmkamp 2005-3-25 9223 San Luis Obispo Outer South Coast Ranges; upper Lopez Canyon; 2.2 mi north of Hi Mountain Road along Upper Lopez Canyon Road 317 Comment
  UCD117575  Trientalis latifolia G. K. Helmkamp; E. A. Helmkamp 2000-4-20 5384 San Luis Obispo San Luis Obispo County: Central Coast Prefumo Cyn., 1.2 mi south of Los Osos Valley Rd. 183 Comment
  UCD123540  Collinsia heterophylla var. heterophylla G. K. Helmkamp; E. A. Helmkamp 2001-4-29 6593 San Luis Obispo San Luis Obispo County: Irish Hills: Profumo Canyon Road, 2.8 miles west of Los Osos Valley Road (SW of San Luis Obispo.) 91 Comment
  UCD170769  Astragalus curtipes George K. Helmkamp; E. A. Helmkamp 2000-3-15 5335 San Luis Obispo San Luis Obispo County: Central Coast, south end of Morro Bay at the west end of Howard St in Los Osos. 6 Comment
  UCD170861  Lupinus truncatus G. K. Helmkamp 2004-3-13 8343 San Luis Obispo San Luis Obispo County: Central Coast, Nipomo Mesa, between Arroyo Grande and Nipomo, Willow Rd, 0.6 mi east of Calif. Hwy 1. 91 Comment
  UCR103952  Helianthemum scoparium George K. Helmkamp 1997-6-22 2079 San Luis Obispo Central Coast, South end of Montana de Oro State Park 15 Comment
  UCR103965  Aster lanceolatus subsp. hesperius George K. Helmkamp 1997-6-22 2073 San Luis Obispo Central Coast, South end of Montana de Oro State Park 15 Comment
  UCR103982  Monardella villosa subsp. obispoensis George K. Helmkamp 1997-6-21 2065 San Luis Obispo Central Coast, Questa Ridge north of San Luis Obispo and 0.4 mi west of radio towers 854 Comment
  UCR104814  Monardella villosa subsp. obispoensis George K. Helmkamp 1997-6-21 2060 San Luis Obispo Central Coast, Questa Ridge north of San Luis Obispo and 0.4 mi west of radio towers 854 Comment
  UCR106713  Stellaria nitens George K. Helmkamp, E. A. Helmkamp 1998-4-8 3242 San Luis Obispo Soda Lake Rd at Arrowbear Trail, vic. of California Valley, c. 5 mi. NW of Soda Lake 610 Comment
  UCR115566  Galium aparine George K. Helmkamp, E. A. Helmkamp 2000-4-20 5393 San Luis Obispo Central Coast, Prefumo Cyn., 1.2 mi south of Los Osos Valley Rd. 183 Comment
  UCR115780  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 2000-4-20 5383 San Luis Obispo Central Coast, Prefumo Cyn., 1.2 mi south of Los Osos Valley Rd. 183 Comment
  UCR115814  Frankenia salina George K. Helmkamp, E. A. Helmkamp 2000-6-15 5687 San Luis Obispo Central Coast, between Los Osos and sand dunes west of the end of Howard St. 15 Comment
  UCR115819  Arctostaphylos tomentosa subsp. tomentosa George K. Helmkamp, E. A. Helmkamp 2000-6-15 5696 San Luis Obispo Central Coast, between Los Osos and sand dunes west of the end of Howard St. 15 Comment
  UCR118335  Ericameria ericoides George K. Helmkamp, E. A. Helmkamp 2000-9-1 5952 San Luis Obispo Los Osos, c. 0.5 miles NW of Hazard Cyn., between Howard St. and sand dunes 6 Comment
  UCR118345  Centaurea iberica George K. Helmkamp, E. A. Helmkamp 2000-9-2 5971 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon, 2.2 mi west of Los Osos Valley Road 137 Comment
  UCR118364  Lathyrus latifolius George K. Helmkamp, E. A. Helmkamp 1998-6-30 4227 San Luis Obispo Central Coast, Irish Hills, SW of San Luis Obispo; Prefumo Cyn 2.2 mi SW of Los Osos Valley Rd. 137 Comment
  UCR118369  Malva nicaeensis George K. Helmkamp, E. A. Helmkamp 1998-7-1 4257 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon Road, 5.2 miles southwest of Los Osos Valley Road 244 Comment
  UCR121522  Stachys rigida George K. Helmkamp, E. A. Helmkamp 2002-4-19 7415 A San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR121534  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2002-4-16 7430 San Luis Obispo Central Coast, Park Ridge 0.5 mi east of Morro Bay near Turri Road 76 Comment
  UCR121539  Pellaea andromedifolia George K. Helmkamp 2002-4-21 7471 San Luis Obispo Central Coast, Santa Rosa Creek Rd., 6.9 mi east of Cambria 183 Comment
  UCR121769  Ceanothus cuneatus subsp. fascicularis George K. Helmkamp, E. A. Helmkamp 2002-4-20 7606 San Luis Obispo Central Coast, Los Osos, 0.2 mile northwest of Monarch Lane 9 Comment
  UCR122126  Echium candicans George K. Helmkamp, E. A. Helmkamp 2002-4-19 7629 San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR122130  Mimulus aurantiacus George K. Helmkamp, E. A. Helmkamp 2000-4-21 5446 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122140  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2000-4-21 5450 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122156  Pholistoma auritum var. auritum George K. Helmkamp, E. A. Helmkamp 2000-4-21 5467 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122173  Chorizanthe angustifolia George K. Helmkamp, E. A. Helmkamp 2000-4-22 5476 San Luis Obispo Central Coast, Los Osos, between the west end of Howard Ave. and Morro Bay sand dunes 15 Comment
  UCR122462  Psilocarphus tenellus var. tenellus George K. Helmkamp, E. A. Helmkamp 1998-5-20 4002 San Luis Obispo Central Coast, Irish Hills, 3.1 miles SE of Los Osos Valley Rd on Clark Valley Rd., SE of Los Osos 351 Comment
  UCR122568  Rhamnus californica subsp. californica George K. Helmkamp, E. A. Helmkamp 2000-4-21 5445 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122737  Veronica persica George K. Helmkamp, E. A. Helmkamp 1998-5-20 3887 San Luis Obispo Central Coast, Irish Hills, 3.1 miles SE of Los Osos Valley Rd on Clark Valley Rd., SE of Los Osos 351 Comment
  UCR123150  Briza minor George K. Helmkamp, E. A. Helmkamp 2002-4-16 7407 San Luis Obispo Central Coast, Park Ridge 0.5 mi east of Morro Bay near Turri Road 76 Comment
  UCR123180  Melica imperfecta George K. Helmkamp, E. A. Helmkamp 1998-5-19 3878 San Luis Obispo Outer South Coast Range; Santa Lucia Range, southwest of Paso Robles along CA Hwy 46 at York Mountain Road 366 Comment
  UCR131089  Spergularia marina George K. Helmkamp, E. A. Helmkamp 1999-5-22 4915 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131344  Chorizanthe angustifolia George K. Helmkamp, E. A. Helmkamp 1999-5-22 4896 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131349  Stachys bullata George K. Helmkamp, E. A. Helmkamp 1999-5-22 4905 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131352  Rubus ursinus George K. Helmkamp, E. A. Helmkamp 1999-5-22 4904 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131914  Piptatherum miliaceum George K. Helmkamp 2003-11-22 8226 San Luis Obispo Central Coast, base of Nipomo Mesa on unnamed road 0.1 mi SW of Halcyon Rd at the railroad crossing, just south of Arroyo Grande 15 Comment
  UCR131919  Baccharis glutinosa George K. Helmkamp 2003-9-8 8127 San Luis Obispo Central Coast, Saltwater ocean inlet 0.2 mile SW of Oceano Airport 6 Comment
  UCR131923  Jaumea carnosa George K. Helmkamp 2003-9-8 8124 San Luis Obispo Central Coast, Saltwater ocean inlet 0.2 mile SW of Oceano Airport 6 Comment
  UCR132142  Aster lanceolatus subsp. hesperius George K. Helmkamp 2003-10-24 8214 San Luis Obispo Central Coast, El Campo Rd 0.1 mi east of Los Berros Rd, SE of Arroyo Grande 46 Comment
  UCR132753  Lolium perenne George K. Helmkamp 2003-7-29 8037 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR134386  Gamochaeta ustulata George K. Helmkamp 2003-9-19 8156 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134391  Sanicula arguta George K. Helmkamp, E. A. Helmkamp 2001-4-29 6584 San Luis Obispo Irish Hills, Clark Valley Rd., 4.2 miles south of Los Osos Valley Rd, E of Los Osos 274 Comment
  UCR134397  Sisyrinchium bellum George K. Helmkamp, E. A. Helmkamp 2001-4-29 6591 San Luis Obispo Irish Hills, Clark Valley Rd., 4.2 miles south of Los Osos Valley Rd, E of Los Osos 274 Comment
  UCR134398  Arenaria douglasii George K. Helmkamp, E. A. Helmkamp 2001-4-29 6592 San Luis Obispo Irish Hills, Prefumo Cyn Rd., 2.8 miles west of Los Osos Valley Rd., SW of San Luis Obispo 91 Comment
  UCR134400  Streptanthus albidus subsp. peramoenus George K. Helmkamp, E. A. Helmkamp 2001-4-29 6594 San Luis Obispo Irish Hills, Prefumo Cyn Rd., 2.8 miles west of Los Osos Valley Rd., SW of San Luis Obispo 91 Comment
  UCR134416  Rubus ursinus George K. Helmkamp, E. A. Helmkamp 2001-4-29 6576 San Luis Obispo Irish Hills, Clark Valley Rd., 3.8 mi south of Los Osos Valley Rd., east of Los Osos 213 Comment
  UCR134431  Epilobium brachycarpum George K. Helmkamp 2003-9-19 8152 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134437  Spergula arvensis subsp. arvensis George K. Helmkamp 2003-8-16 8085 San Luis Obispo Central Coast, Nipomo Mesa at Willow Road, 0.5 mi east of Calif. Hwy 1, near Black Lake golf course 76 Comment
  UCR134438  Melilotus indicus George K. Helmkamp 2003-8-16 8084 San Luis Obispo Central Coast, Nipomo Mesa at Willow Road, 0.5 mi east of Calif. Hwy 1, near Black Lake golf course 76 Comment
  UCR134441  Euphorbia peplus George K. Helmkamp 2003-8-16 8086 San Luis Obispo Central Coast, Nipomo Mesa at Willow Road, 0.5 mi east of Calif. Hwy 1, near Black Lake golf course 76 Comment
  UCR134447  Rumex crispus George K. Helmkamp 2003-9-26 8178 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 Comment
  UCR134448  Schoenoplectus pungens var. badius George K. Helmkamp 2003-9-26 8184 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 Comment
  UCR134689  Spergularia villosa George K. Helmkamp 2003-9-19 8159 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR135962  Chorizanthe staticoides George K. Helmkamp, E. A. Helmkamp 2001-4-29 6561 San Luis Obispo South Coast Range, Irish Hills, Clark Valley Road, 2.8 miles south of Los Osos Valley Road, east of Los Osos 91 Comment
  UCR140085  Rumex crispus George K. Helmkamp 2004-2-10 8271 San Luis Obispo Central Coast, southeast of Oceano along Halcyon Rd., 0.2 mi east of Mesa View Dr. 76 Comment
  UCR140106  Amsinckia intermedia George K. Helmkamp 2004-2-7 8255 San Luis Obispo Central Coast, SE of Oceano along Halcyon Rd., just east of Mesa View Dr. 76 Comment
  UCR140110  Veronica persica George K. Helmkamp 2004-2-7 8259 San Luis Obispo Central Coast, SE of Oceano along Halcyon Rd., just east of Mesa View Dr. 76 Comment
  UCR140121  Lupinus nanus George K. Helmkamp 2004-2-17 8294 San Luis Obispo Central Coast, SE of Oceano along Halcyon Rd, 0.2 mi east of Mesa View Dr (Calif. Hwy 1) 76 Comment
  UCR140127  Sisymbrium orientale George K. Helmkamp 2004-3-13 8344 San Luis Obispo Central Coast, Nipomo Mesa, between Arroyo Grande and Nipomo, Willow Rd, 0.6 mi east of Calif. Hwy 1 91 Comment
  UCR140128  Vicia villosa subsp. varia George K. Helmkamp 2004-3-13 8345 San Luis Obispo Central Coast, Nipomo Mesa, between Arroyo Grande and Nipomo, Willow Rd, 0.6 mi east of Calif. Hwy 1 91 Comment
  UCR140151  Brassica tournefortii George K. Helmkamp 2004-2-6 8245 San Luis Obispo Central Coast, Oso Flaco Lake Road, 0.5 mi east of the lake 9 Comment
  UCR140157  Lupinus chamissonis George K. Helmkamp 2004-2-29 8322 San Luis Obispo Central Coast, Nipomo Mesa, Nipomo, Orchard Ave. 0.1 mi NW of Division St. 116 Comment
  UCR140405  Dryopteris arguta George K. Helmkamp 2004-3-15 8377 San Luis Obispo Central Coast, edge of Nipomo Mesa overlooking Cienaga Valley, along Calif. Hwy 1 (Mesa View Dr.), 0.3 mi N of Halcyon Rd. 76 Comment
  UCR141005  Lupinus bicolor George K. Helmkamp 2004-3-10 8334 San Luis Obispo Central Coast, Nipomo Mesa, along Pomeroy Rd, 0.2 mi N of Willow Rd, NW of Nipomo 91 Comment
  UCR141945  Oxalis pes-caprae George K. Helmkamp 2003-12-18 8230 San Luis Obispo Central Coast, Arroyo Grande, Courtland Ave. one block south of Grand Ave. 15 Comment
  UCR142582  Salvia spathacea George K. Helmkamp, E. A. Helmkamp 2000-4-20 5421 San Luis Obispo Central Coast, road crest between See Canyon Road and Prefumo Canyon Road, SW of San Luis Obispo 320 Comment
  UCR14566  Stachys bullata George K. Helmkamp 1974-4-28 s.n. San Luis Obispo Central Coast, north of 'Morro Bay' on Cuesta Grade [presumably meaning N of San Luis Obispo] 305 Comment
  UCR146964  Portulaca oleracea George K. Helmkamp, E. A. Helmkamp 2004-10-8 8849 San Luis Obispo Central Coast, Biddle Regional Park, 7 mi NE of Arroyo Grande along Lopez Drive and Arroyo Grande Creek 136 Comment
  UCR146969  Quercus lobata George K. Helmkamp, E. A. Helmkamp 2004-10-8 8854 San Luis Obispo Outer South Coast Range, NE edge of Santa Lucia Wilderness Area; along Hi Mountain Road and beside Salt Creek, 8.0 mi. NE of Lopez Lake entrance 399 Comment
  UCR147233  Haplopappus menziesii George K. Helmkamp, E. A. Helmkamp 2004-8-26 8790 San Luis Obispo Central Coast, Riverside Rd at the low end of Nipomo Mesa, 0.2 mi east of jct with Division Rd. 46 Comment
  UCR157981  Centaurium venustum George K. Helmkamp, E. A. Helmkamp 1998-6-30 4211 San Luis Obispo South Coast Range, Alamo Creek Rd, 0.9 mile north of Calif. Hwy 166, near Twitchell Reservoir 320 Comment
  UCR158742  Anagallis arvensis George K. Helmkamp, E. A. Helmkamp 2005-4-17 9372 San Luis Obispo Central Coast, Corbett Canyon, 2.3 miles north of Calif. Hwy 227 in Arroyo Grande 81 Comment
  UCR158888  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2005-4-17 9375 San Luis Obispo Central Coast, Corbett Canyon, 2.3 miles north of Calif. Hwy 227 in Arroyo Grande 81 Comment
  UCR159300  Delphinium hesperium subsp. pallescens George K. Helmkamp, E. A. Helmkamp 2005-4-22 9422 San Luis Obispo East side of Inner South Coast Ranges, Carrizo Highway at mile 38 (Calif. Hwy 58, east of Santa Margarita and west of Simmler-Bitterwater Road) 610 Comment
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Oct 4 2007
  UCR160161  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2005-6-9 9562 San Luis Obispo South Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 5.4 mi northeast of Huasna Township Road. 256 Comment
  UCR160384  Clarkia bottae George K. Helmkamp, E. A. Helmkamp 2005-6-9 9618 San Luis Obispo Central Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 9.6 miles NE of Huasna Townsite Road 378 Comment
  UCR160389  Adiantum jordanii George K. Helmkamp, E. A. Helmkamp 2005-6-9 9604 San Luis Obispo Central Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 9.6 miles NE of Huasna Townsite Road 378 Comment
  UCR160573  Centaurea melitensis George K. Helmkamp, E. A. Helmkamp 2005-6-7 9554 San Luis Obispo Outer South Coast Ranges, along Arroyo Grande to Huasna Road [beyond Huasna], 2.1 miles ENE of Huasna Township Road 253 Comment
  UCR160586  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2005-6-9 9594 San Luis Obispo Central Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 8.3 miles northeast of Huasna Townsite Road 332 Comment
  UCR160970  Clarkia speciosa subsp. speciosa George K. Helmkamp, E. A. Helmkamp 2005-6-12 9659 San Luis Obispo South Central Coast Range, Along Calif. Highway 229 (road to Creston), 5.5 mi N of Calif. Highway 58; beside West Branch of Huerhuero Creek 363 Comment
  UCR161225  Eucrypta chrysanthemifolia var. chrysanthemifolia George K. Helmkamp, E. A. Helmkamp 2005-3-5 9038 A San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness N of Lopez Lake, Upper Lopez Canyon Road, 5.5 mi N of jct with Lopez Road 335 Comment
  UCR161285  Pityrogramma triangularis var. triangularis George K. Helmkamp, E. A. Helmkamp 2005-3-8 9044 San Luis Obispo Central Coast Hills, Prefumo Canyon, north side of Irish Hills. 1.1 mi SW of Los Osos Valley Road along Prefumo Canyon Road 98 Comment
  UCR161304  Adiantum jordanii George K. Helmkamp, E. A. Helmkamp 2005-3-9 9101 San Luis Obispo Central Coast Hills, Irish Hills; See Canyon, 4.4 mi N of San Luis Bay Drive 186 Comment
  UCR161333  Cardamine californica var. californica George K. Helmkamp, E. A. Helmkamp 2005-3-5 9008 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness north of Lake Lopez, Upper Lopez Canyon Road, 7.2 mi north of jct with Lopez Road and at Water End Road 174 Comment
  UCR161343  Lithophragma heterophyllum George K. Helmkamp, E. A. Helmkamp 2005-3-8 9041 San Luis Obispo Central Coast Hills, Prefumo Canyon, north side of Irish Hills. 1.1 mi SW of Los Osos Valley Road along Prefumo Canyon Road 98 Comment
  UCR161465  Sanicula bipinnata George K. Helmkamp, E. A. Helmkamp 2005-2-24 8957 San Luis Obispo South Coast Ranges, along Huasna Road, c. 5 mi. NE of its junction with Huasna Towship Road (generally east of Arroyo Grande) 244 Comment
  UCR161471  Rumex salicifolius George K. Helmkamp, E. A. Helmkamp 2005-5-17 9469 San Luis Obispo Central Coast, Mile 60 of Calif. Highway 1, c. 2.0 mi WNW of San Simeon 15 Comment
  UCR161672  Vicia benghalensis George K. Helmkamp, E. A. Helmkamp 2005-5-17 9472 San Luis Obispo Central Coast, Mile 60 of Calif. Highway 1, c. 2.0 mi WNW of San Simeon 15 Comment
  UCR161681  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2005-5-17 9504 San Luis Obispo Central Coast, 2.5 mi WNW of San Simeon; along Calif. Highway 1 11 Comment
  UCR161687  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2005-2-24 8966 San Luis Obispo South Coast Ranges, along Huasna Road, c. 5 mi. NE of its junction with Huasna Towship Road (generally east of Arroyo Grande) 244 Comment
  UCR161688  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2005-2-24 8967 San Luis Obispo South Coast Ranges, along Huasna Road, c. 5 mi. NE of its junction with Huasna Towship Road (generally east of Arroyo Grande) 244 Comment
  UCR161696  Stellaria nitens George K. Helmkamp, E. A. Helmkamp 2005-3-8 9054 San Luis Obispo Coastal Hills, Prefumo Canyon, north side of Irish Hills; 2.2 mi west of Los Osos Valley Road 122 Comment
  UCR161913  Claytonia parviflora subsp. parviflora George K. Helmkamp, E. A. Helmkamp 2005-3-1 8998 San Luis Obispo South Outer Coast Ranges, Santa Lucia Range NE of Lopez Lake; 4.8 mi. N of Hi Mountain Road along Upper Lopez Lake Road. Vicinity of Wittenberg and Huffs Hole Creeks 232 Comment
  UCR161924  Galium aparine George K. Helmkamp, E. A. Helmkamp 2005-3-1 8976 San Luis Obispo South Outer Coast Ranges, Santa Lucia Range NE of Lake Lopez; 0.3 mi. N of Hi Mountain Road along Upper Lopez Canyon Road 311 Comment