Search Results — 2000 specimen records retrieved (1977 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-BC334226  Packera pseudaurea George K. Helmkamp; Belinda Pesheck 2013-7-14 21054 Alpine Northern Sierra Nevada Mountains: off Blue Lakes Road, 9.4 miles S of CA-88, between a private dirt road and Charity Valley Creek 2409 Comment
  CAS-BOT-BC520330  Eurybia integrifolia George K. Helmkamp; Amy Barnes 2012-8-12 19602 Alpine Northern Sierra Nevada Mountains: Woods Lake Road, 0.8 mi SE of jct with CA-88 and beside Woods Creek 2285 Comment
  CDA36226  Sisymbrium altissimum G. K. Helmkamp, E. A. Helmkamp 2009-8-4 15362 Alpine Sierra Nevada Mountains; Along CA Hwy 4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River. 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-A1045-1132  Sisymbrium altissimum George K. Helmkamp 1977-9-1 III Alpine Sierra Nevada roadside in sagebrush scrub area at the Pass; ; Topaz Lake 7.5'Q 2529 Comment
  CLARK-A1045-1155  Aster ascendens George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  OBI82113  Lepidium virginicum var. pubescens George K. Helmkamp, Belinda Pesheck 2013-7-14 21053 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
  RSA0012082  Pseudostellaria jamesiana George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18072 Alpine south side of Bear Valley Village, along CA Hwy 4 2169 Comment
  RSA0035706  Mentzelia laevicaulis George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-14 22175 Alpine along CA-89, 0.6 mile south of Markleeville 1691 Comment
  RSA0035707  Melilotus officinalis George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-14 22176 Alpine along CA-89, 0.6 mile south of Markleeville 1691 Comment
  RSA0035720  Phleum pratense George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-14 22233 Alpine Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  RSA0093488  Mentha canadensis George K. Helmkamp, Amy Barnes 2014-9-16 23092 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
  RSA0093524  Ambrosia acanthicarpa George K. Helmkamp, Amy Barnes 2014-8-27 23029 Alpine Northern Sierra Nevada Mountains. West Fork Carson River canyon, along highway CA-88/Carson Pass Hwy, 2.6 miles east of the junction with Hwy 89/Luther Pass Rd. 1994 Comment
  SBBG128850  Trifolium cyathiferum G. K. Helmkamp, E. A. Helmkamp 2008-7-16 13791 Alpine Woods Lake Rd, 0.1 mi S of its jct with CA-88 2457 Comment
  SBBG128981  Micranthes bryophora G. K. Helmkamp, E. A. Helmkamp 2011-8-19 18120 Alpine Tamarack Rd, 0.1 mi E of its jct with Blue Lakes Rd 2485 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
  SD148124  Mentzelia montana G. K. Helmkamp, E. A. Helmkamp 2001-7-6 6840 Alpine Sierra Nevada Mountains; Ca 89, 7.1 miles west of U. S. 395. 2470 Comment
  SD197883  Eriogonum spergulinum var. reddingianum G. K. Helmkamp, E. A. Helmkamp 2008-8-8 13974 Alpine Along CA-89 at Grass Lake, 0.9 mile west of Luther Pass. 2353 Comment
  SD212456  Osmorhiza occidentalis G. K. Helmkamp, E. A. Helmkamp 2006-8-3 11115 Alpine Northern Sierra Nevada Mountains; Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake. 2509 Comment
  SD236193  Grindelia squarrosa var. serrulata G. K. Helmkamp, E. A. Helmkamp 2008-7-22 13899 Alpine Eastern Sierra Nevada Mountains: Carson River Road at its east junction with CA-88 and Diamond Valley Road 1677 Comment
  SD237573  Polygonum polygaloides subsp. kelloggii G. K. Helmkamp, E. A. Helmkamp 2008-7-16 13816 Alpine Northern Sierra Nevada Mountains: Woods Lake Road, 0.1 mile south of its junction with CA-88 (Caples Lake 7.5'Q) 2457 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
  SD241169  Holodiscus discolor George K. Helmkamp, William Barnes 2010-9-4 16942 Alpine Northern Sierra Nevada Mountains Foothills: 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
  SEINET11261734  Gilia leptalea subsp. bicolor George Helmkamp, Ann Kerchner; Amy Barnes 2011-8-13 18091 Alpine Northern Sierra Nevada Mountains: unnamed dirt roadon the east side of CA-4 and about .1 mile northeast of the Calaveras Co. line, near Bear Valley (Tamarack 7.5' Q.); 0 2165 Comment
  SEINET11267715  Gilia leptalea subsp. bicolor George Helmkamp, Elizabeth Helmkamp 2013-8-2 22092 Alpine Northern Sierra Nevada Mountains: along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam (Caples Lake 7.5' Q.); 0 2486 Comment
  SEINET1908797  Holodiscus microphyllus G. K. Helmkamp, E. A. Helmkamp 2008-1 13834 Alpine Northern Sierra Nevada Mountains: along CA-88, 0.8 mile northeast of Carson Pass (Carson Pass 7.5' Q) 2534 Comment
  SEINET1908799  Eriogonum nudum var. paralinum G. K. Helmkamp, E. A. Helmkamp 2008-1 13833 Alpine Northern Sierra Nevada Mountain: along CA-88, 0.8 mile northeast of Carson Pass (Carson Pass 7.5' Q) 2533 Comment
Read comments
Mar 25 2019
  SEINET3260182 Image available Elymus elymoides George K. Helmkamp, E. A. Helmkamp 2008-8-8 13995 Alpine Northern Sierra Nevada Mountains: along Blue Lake road, 8.5 miles south of its junction with CA-88. 2497 Comment
  SEINET3260241 Image available Phacelia ramosissima var. subglabra George K. Helmkamp, E. A. Helmkamp 2008-8-8 13975 Alpine Northern Sierra Nevada Mountains; along CA-89 at Grass Lake, 0.9 mile west of Luther Pass. 2354 Comment
  SEINET3260377 Image available Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2008-8-8 14005 Alpine Northern Sierra Nevada Mountains; along Blue Lake Road, 9.2 miles south of its junction with CA-88. 2512 Comment
  SEINET3282746 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus George K. Helmkamp, E. A. Helmkamp 2008-9-22 14160 Alpine Northern Sierra Nevada Mountains; along CA-89. 0.1 mile north of Markleeville. 1686 Comment
  SEINET4560553  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Elizabeth Helmkamp 2013-1 22256 Alpine Northern Sierra Nevada Mountains: along CA-89, 0.6 mile south of Markleeville. 1691 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
  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
  UC2047233  Symphyotrichum campestre George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22199 Alpine Northern Sierra Nevada Mountains: along CA-89, 1.0 mile east of Monitor Pass then 0.1 mile southwest on an unnamed dirt road. Topaz Lake 7.5' Quad. Comment
  UC2047237  Symphyotrichum spathulatum George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22180 A Alpine Northern Sierra Nevada Mountains: along CA-89, 0.1 mile east of its junction with CA-4, Monitor Creek. Heenan Lake 7.5' Qua. Comment
  UCD101246  Eriogonum spergulinum var. reddingianum G. 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
  UCD103645  Gayophytum diffusum subsp. parviflorum G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11114 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
  UCD109456  Lupinus polyphyllus var. burkei G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12679 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
  UCD123236  Orthocarpus cuspidatus subsp. cryptanthus G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11102 Alpine Northern Sierra Nevada Mountains: Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake. Juncture of meadows, Wood's Creek. 2509 Comment
  UCD125217  Monardella odoratissima subsp. pallida G. K. Helmkamp; E. A. Helmkamp 2006-9-12 11401 Alpine Northern Sierra Nevada Mountains: west end of Caples Lake at a dam; alongside Hwy CA-88. 2335 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
  UCD127864  Perideridia parishii subsp. latifolia G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12677 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
  UCD128311  Achillea millefolium G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12684 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
  UCD129191  Artemisia arbuscula subsp. arbuscula G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12690 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
  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
  UCD136496  Symphyotrichum foliaceum G. K. Helmkamp; E. A. Helmkamp 2006-8-30 11313 Alpine Northern Sierra Nevada Mountains, 0.5 miles north of CA-88 on road to Kirkwood Campground, which is beside Kirkwood Lake. 2338 Comment
  UCD63239  Deschampsia elongata G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12680 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
  UCD96139  Delphinium nuttallianum G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11135 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
  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
  UCR114239  Carex abrupta George K. Helmkamp, E. A. Helmkamp 1997-9-9 2293 Alpine Sierra Nevada Mtns., Ebbetts Pass along Calif. Hwy [4] 2652 Comment
  UCR114359  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 1997-9-9 2288 Alpine Sierra Nevada Mtns., Ebbetts Pass along Calif. Hwy [4] 2652 Comment
  UCR122312  Horkelia fusca subsp. parviflora George K. Helmkamp, E. A. Helmkamp 1997-9-9 2303 Alpine Sierra Nevada Mountains, Leviathan Lookout Road at the S and W sides of Leviathan Peak, NW of Monitor Pass 2683 Comment
  UCR123969  Wyethia mollis George K. Helmkamp, E. A. Helmkamp 2001-7-6 6839 Alpine Sierra Nevada Mountains, Calif. Hwy 89, 7.1 mi west of US-395 2470 Comment
  UCR176275  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, E. A. Helmkamp 2006-8-3 11133 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176482  Phacelia hydrophylloides George K. Helmkamp, E. A. Helmkamp 2006-8-3 11150 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176492  Trifolium longipes var. nevadense George K. Helmkamp, E. A. Helmkamp 2006-8-3 11144 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR178716  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 2006-8-30 11296 Alpine Northern Sierra Nevada Mountains, Woods Lake, south of Calif. Hwy 88 and generally SE of Caples Lake 2521 Comment
  UCR178718  Sphenosciadium capitellatum George K. Helmkamp, E. A. Helmkamp 2006-9-12 11405 Alpine Northern Sierra Nevada Mountains, west end of Caples Lake at a dam; alongside CA Hwy 88 2335 Comment
  UCR189143  Potentilla gracilis var. fastigiata George K. Helmkamp, E. A. Helmkamp 2007-7-17 12553 Alpine Northern Sierra Nevada Mountains, Blue Lake Road about nine miles south of its junction with CA-88 2511 Comment
  UCR189189  Sidalcea oregana subsp. spicata George K. Helmkamp 2007-7-7 12486 Alpine Northern Sierra Nevada Mountains, along CA-89, 1.3 miles north of its junction with CA-88 2262 Comment
  UCR189199  Cymopterus terebinthinus var. californicus George K. Helmkamp 2007-7-7 12505 Alpine Northern Sierra Nevada Mountains, Blue Lake Road, 12.0 miles south of its junction with CA-88 2549 Comment
  UCR190212  Erigeron peregrinus George K. Helmkamp, E. A. Helmkamp 2007-8-4 12672 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
  UCR196810  Lupinus arbustus George K. Helmkamp, E. A. Helmkamp 2008-7-16 13795 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR196814  Sanicula graveolens George K. Helmkamp, E. A. Helmkamp 2008-7-16 13798 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR197004  Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 2008-7-22 13901 Alpine Eastern Sierra Nevada Mountains, Carson River Road at its east junction with CA-88 and Diamond Valley Road 1677 Comment
  UCR197005  Ericameria greenei George K. Helmkamp, E. A. Helmkamp 2008-7-22 13903 Alpine Eastern Sierra Nevada Mountains, junction of CA-88/89 and entrance to Crystal Springs campground, 1.2 miles southwest of Woodfords 1829 Comment
  UCR197023  Eleocharis macrostachya George K. Helmkamp, E. A. Helmkamp 2008-7-22 13854 Alpine Eastern Sierra Nevada Mountains, Blue Lake Road just southeast of its junction with CA-88 2180 Comment
  UCR197027  Hordeum brachyantherum subsp. brachyantherum George K. Helmkamp, E. A. Helmkamp 2008-7-16 13821 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR197033  Ceanothus velutinus subsp. velutinus George K. Helmkamp, E. A. Helmkamp 2008-7-22 13879 Alpine Eastern Sierra Nevada Mountains, along CA-88/89 at the east end of Hope Valley at the West Fork of the Carson River 2104 Comment
  UCR197037  Polygonum polygaloides subsp. kelloggii George K. Helmkamp, E. A. Helmkamp 2008-7-16 13816 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR197040  Potentilla glandulosa subsp. nevadensis George K. Helmkamp, E. A. Helmkamp 2008-7-16 13830 Alpine Northern Sierra Nevada Mountains, along CA-88, 0.8 mile northeast of Carson Pass 2534 Comment
  UCR202550  Chrysothamnus nauseosus subsp. albicaulis George K. Helmkamp, E. A. Helmkamp 2008-9-22 14146 Alpine Northern Sierra Nevada Mountains, Carson River Road running about parallel to CA-88, 2.2 miles east of its western junction with CA-88 1619 Comment
  UCR202554  Cryptantha echinella George K. Helmkamp, E. A. Helmkamp 2008-8-8 13976 Alpine Northern Sierra Nevada Mountains, along CA-89 at Grass Lake, 0.9 mile west of Luther Pass 2354 Comment
  UCR202920  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2008-8-8 14007 Alpine Northern Sierra Nevada Mountains, along Blue Lake Road, 9.2 miles south of its junction with CA-88 2512 Comment
  UCR209695  Elymus cinereus George K. Helmkamp, E. A. Helmkamp 2009-8-4 15367 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
  UCR229412  Aster integrifolius George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18093 Alpine Northern Sierra Nevada Mountains, unnamed dirt road on the east side of CA-4 and about 0.1 mile northeast of the Calaveras Co. line, near Bear Valley 2165 Comment
  UCR229439  Muhlenbergia filiformis George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18088 Alpine Northern Sierra Nevada Mountains, unnamed dirt road on the east side of CA-4 and about 0.1 mile northeast of the Calaveras Co. line, near Bear Valley 2165 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
  UCR234561  Platanthera dilatata var. leucostachys George K. Helmkamp, E. A. Helmkamp 2011-8-19 18149 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 2.6 miles north of its junction with Tamarack Road 2436 Comment
  UCR234566  Navarretia breweri George K. Helmkamp, E. A. Helmkamp 2011-8-19 18140 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 1.4 miles north of its junction with Tamarack Road 2506 Comment
  UCR234568  Penstemon newberryi var. newberryi George K. Helmkamp, E. A. Helmkamp 2011-8-19 18127 Alpine Northern Sierra Nevada Mountains, northeast side of Lower Blue Lake, above campground 2500 Comment
  UCR234571  Antennaria rosea subsp. rosea George K. Helmkamp, E. A. Helmkamp 2011-8-19 18130 Alpine Northern Sierra Nevada Mountains, northeast side of Lower Blue Lake, above campground 2500 Comment
  UCR234591  Saxifraga bryophora George K. Helmkamp, E. A. Helmkamp 2011-8-19 18120 Alpine Northern Sierra Nevada Mountains, Tamarack Road, 0.1 mile east of its junction with Blue Lakes Road 2485 Comment
  UCR245552  Asclepias fascicularis George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22236 Alpine Northern Sierra Nevada Mountains, Silver Creek, along CA-4, 5.0 miles west of its junction with CA-89 1927 Comment
  UCR245724  Lepidium virginicum var. virginicum George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22261 Alpine Northern Sierra Nevada Mountains, along CA-89, 0.6 mile south of Markleeville 1691 Comment
  UCR245730  Trifolium pratense George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22210 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR247260  Prunus emarginata George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22191 Alpine Northern Sierra Nevada Mountains, along CA-89, 1.3 miles southwest of Monitor Pass 2503 Comment
  UCR252788  Lupinus lepidus var. sellulus George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22095 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 Comment
  UCR252791  Artemisia arbuscula subsp. arbuscula George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22097 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 Comment
  UCR252796  Ipomopsis aggregata subsp. formosissima George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22101 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 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
  UCR252987  Carex vesicaria George K. Helmkamp, Amy Barnes 2013-9-23 22324 Alpine Northern Sierra Nevada Mountains, northern edge of Mosquito Lake along CA-4/Ebbetts Pass road 2454 Comment
  UCR253070  Potentilla glandulosa subsp. globosa George K. Helmkamp, Belinda Pesheck 2013-7-14 21088 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR253074  Lupinus fulcratus George K. Helmkamp, Belinda Pesheck 2013-7-14 21084 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR253080  Agrostis stolonifera George K. Helmkamp, Amy Barnes 2013-9-23 22332 Alpine Northern Sierra Nevada Mountains, northern edge of Mosquito Lake along CA-4/Ebbetts Pass road 2454 Comment
  UCR253094  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, Belinda Pesheck 2013-7-14 21074 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR257703  Lepidium virginicum var. pubescens George K. Helmkamp, Amy Barnes 2012-8-12 19632 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
  UCR257753  Phacelia hydrophylloides George K. Helmkamp, Amy Barnes 2012-8-12 19592 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257757  Muhlenbergia filiformis George K. Helmkamp, Amy Barnes 2012-8-12 19586 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257866  Elymus glaucus var. glaucus George K. Helmkamp, Amy Barnes 2012-8-12 19614 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257906  Agoseris glauca var. monticola George K. Helmkamp, Amy Barnes 2012-8-12 19595 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257908  Sphenosciadium capitellatum George K. Helmkamp, Amy Barnes 2012-8-12 19593 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257951  Muhlenbergia filiformis George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19724 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 9.2 miles south of its junction with CA-88, 1.75 air mi. east of Blue Lake 2515 Comment
  UCR258392  Ericameria nauseosa var. speciosa George K. Helmkamp, Amy Barnes 2014-8-27 23037 Alpine Northern Sierra Nevada Mountains, Woodfords, at the junction of CA-88 and CA-89 1723 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
  UCR261623  Nepeta cataria George K. Helmkamp, Amy Barnes 2014-9-16 23100 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
  UCR87688  Myosotis scorpioides George K. Helmkamp, E. A. Helmkamp 1995-6-23 95 7 1 Alpine Sierra Nevada Mtns, Bear Valley along Calif. Hwy 4 2134 Comment
  UCR87842  Agoseris George K. Helmkamp, E. A. Helmkamp 1995-6-23 95- 8 -12 Alpine Sierra Nevada Mtns., Monitor Pass, along Calif. Hwy 89 2530 Comment
  UCR87843  Collomia tinctoria George K. Helmkamp, E. A. Helmkamp 1995-6-23 s.n. Alpine Sierra Nevada Mtns, Calif. Hwy 89, 6.0 mi east of the junction with Calif. Hwy 4 on the way to Monitor Pass. Slope above Monitor Creek 2200 Comment
  UCR88332  Cirsium andersonii George K. Helmkamp 1995-9-23 - 25 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  CAS-BOT-BC227109  Galium aparine George K. Helmkamp; E. A. Helmkamp 2011-5-10 17244 Amador Northern Sierra Nevada Mountains Foothills: along Sutter Creek near Sutter Creek Rd., 2.9 air miles NE (68 deg. ) of town of Sutter Creek 412 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-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-BC520345  Pycreus niger George K. Helmkamp; E. A. Helmkamp 2012-10-5 19979 Amador Northern Sierra Nevada Mountains Foothills: Sutter Creek Road, 10.7 mi E of CA-49, in Sutter Creek 635 Comment
  CAS-BOT-BC520364  Leersia oryzoides George K. Helmkamp; Elizabeth Helmkamp 2013-10-18 22443 Amador Sierra Nevada Mountains Foothills: Plymouth, at the jct of Mineral St and Mill St, near Hwy CA-49 329 Comment
  CAS-BOT-BC530096  Viola lobata subsp. lobata G. K. Helmkamp; E. A. Helmkamp 2008-6-23 13718 Amador Northern Sierra Nevada Mountains: Dufrene Road, 0.1 miles south of its junction with CA-88, between Mormon Emigrant Trail and Hamms Station 2076 Comment
  CDA36227  Nicotiana acuminata var. multiflora G. K. Helmkamp, E. A. Helmkamp 2009-9-22 15635 Amador Sierra Nevada Mountains Foothills; Junction of Shenandoah Road (CA Hwy 16) and Steiner Road, southwest of River Pines. Comment
  CDA36228  Kickxia elatine G. K. Helmkamp, E. A. Helmkamp 2009-9-22 15636 Amador Sierra Nevada Mountains Foothills; Junction of Shenandoah Road (CA Hwy 16) and Steiner Road, southwest of River Pines. 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
  HSC104159  Artemisia douglasiana G. K. Helmkamp, E. A. Helmkamp 2012-1 19874 Amador Northern Sierra Nevada Mountains; along Hwy. E-26 (Red Corral/West Point-Pioneer Rd.) just north of the bridge over the North Fork Mokelumne River 613 Comment
  RSA0012222  Gilia capitata subsp. pedemontana George K. Helmkamp, E. A. Helmkamp 2011-5-10 17247 Amador along Sutter Creek near Sutter Creek Rd., 2.9 air miles NE (68 deg.) of town of Sutter Creek 412 Comment
  RSA0013382  Gilia capitata subsp. pedemontana George K. Helmkamp, E. A. Helmkamp 2011-6-17 17602 Amador along CA-26, 0.1 mile west of the Calaveras Co. line at the bridge over the North Fork Mokelumne Rive 1.6 mi. SE (115 degrees) of Pioneer. 652 Comment
  RSA0035671  Lupinus albifrons var. albifrons George K. Helmkamp, Mary Alice Barnes 2013-4-24 20385 Amador Along CA-26 (Red Corral/West Point-Pioneer Rd.), 2.8 miles southeast of its junction with CA-88 905 Comment
  RSA0035746  Mentha spicata var. spicata George K. Helmkamp, Elizabeth A. Helmkamp 2013-9-13 22291 Amador Volcano Road; 0.1 mile northwest of the village of Volcano 671 Comment
  RSA0049983  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2012-6-6 19141 Amador Panther Creek Road, 6.2 miles south of its junction with CA-88, 5.9 mi. SW (245 deg ) of Bear River Reservoir dam 1438 Comment
  RSA715227  Madia citriodora George K. Helmkamp, E. A. Helmkamp 2005-9-1 9838 Amador Northern Sierra Nevada Foothills: Climax road at Taves Road, 0.3 miles west of CA highway 88 (ESE of Sacramento and ca. 13 miles NE of Jackson) 701 Comment
  RSA746968  Atriplex canescens subsp. canescens George K. Helmkamp, E. Helmkamp 2008-10-30 14303 Amador along CA-49, 0.2 mile south of Plymouth 314 Comment
  RSA750429  Psoralea physodes George K. Helmkamp, E. A. Helmkamp 2008-9-28 14164 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
  RSA752646  Delphinium nuttallianum George K. Helmkamp, E. A. Helmkamp 2008-6-23 13711 Amador Dufrene Road, 0.1 mile south of its junction with CA-88, between Mormon Emigrant Trail and Hamms Station 2076 Comment
  RSA795351  Hypericum androsaemum George K. Helmkamp, E. A. Helmkamp 2011-8-6 17976 Amador Ellis Road, 2.1 miles south of its junction with CA-88. 1794 Comment
  RSA795623  Gilia leptalea subsp. leptalea George K. Helmkamp, E. A. Helmkamp 2011-8-6 17959 Amador Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  SBBG120617  Trifolium hirtum G. K. Helmkamp with E. A. Helmkamp 2006-5-6 10301 Amador St Hwy 49, 0.3 mi S of Drytown 226 Comment
  SBBG129000  Ipomopsis aggregata subsp. bridgesii G. K. Helmkamp, E. A. Helmkamp 2012-7-14 19392 Amador edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 mi N of Silver Lake 2317 Comment
Read comments
May 8 2017
  SBBG133743  Trifolium glomeratum G. K. Helmkamp, E. A. Helmkamp 2011-6-7 17470 Amador Shake Ridge Rd, 1 mi SW of its jct with Pine Gulch Rd, ca. 1.3 mi NE of Sutter Crk 427 Comment
  SD212749  Valerianella locusta G. K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10341 Amador Grass Valley Creek, 1.2 miles east of Pine Grove along Highway CA 88. 762 Comment
  SD234357  Stellaria media G. K. Helmkamp, E. A. Helmkamp 2006-3-19 10094 Amador Northern Sierra Nevada Foothills: Along CA Highway 49 S of Plymouth (Amador City 7.5' Q) 323 Comment
  SD235023  Lithophragma tenellum G. 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
  SD236284  Acmispon nevadensis G. K. Helmkamp 2008-6-17 13678 Amador Northern Sierra Nevada Mountains: Bear River Reservoir Road, 0.1 mile south of its junction with CA-88. 1990 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
  SD243060  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2010-9-1 16911 Amador Northern Sierra Nevada Mountains: Dufrene Road 0.7 mile east of its junction with CA-88, north of Lower Bear River Reservoir. Roadside ditch. 2044 Comment
  SD243195  Prunus cerasifera George K. Helmkamp, E. A. Helmkamp 2012-3-22 18640 Amador Northern foothills, Sierra Nevada Mountains: Bell Road, 0.2 mile east of its junction with CA-49. Beside a small creek. 270 Comment
  SD248347  Alnus rhombifolia George K. Helmkamp, Elizabeth Helmkamp 2013-11-11 22484 Amador Sierra Nevada Mountains Foothills: Sutter Creek-Volcano Road, 4.6 miles east of CA-49 in town of Sutter Creek, picnic area along Sutter Creek. 420 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
  SD260185  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2012-10-5 19985 Amador Northern Sierra Nevada Mountains Foothills: Fiddletown Road, 1.3 miles west of its junction with Shake Ridge Road. 940 Comment
  SD260209  Calystegia occidentalis subsp. occidentalis George K. Helmkamp, Elizabeth Helmkamp 2013-5-22 20664 Amador Northern Sierra Nevada Mountains Foothills: Ostrom Road, 1.2 miles east of E-16 (Plymouth-Shenandoah Rd,), 1.1 mi. north (353a^z) of Fiddletown (Fiddletown 7.5'Q) 572 Comment
  SEINET10237197  Achnatherum lemmonii George K. Helmkamp, Elizabeth Helmkamp 2013-1 21015 Amador Northern Sierra Nevada Mountains: Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2190 Comment
  SEINET11262688  Erodium moschatum George Helmkamp, E. A. Helmkamp 2011-6-22 17616 Amador Northern Sierra Nevada Mountains Foothills: Sutter-Ione Road, 2.7 miles West of it junction with CA-49, 2.9 mi. SW (2211/4) of Amador City.; 0 308 Comment
  SEINET11265847  Quercus chrysolepis George Helmkamp, E. A. Helmkamp 2010-10-1 16986 Amador Northern Sierra Nevada Mountains Foothills: Sutter Creek Rd. toward Volcano, 4.2 miles east of CA-49 in Sutter Creek (Pine Grove 7.5' Q.); 0 421 Comment
  SEINET11265854  Gilia capitata subsp. pedemontana George Helmkamp, E. A. Helmkamp 2011-5-10 17247 Amador Northern Sierra Nevada Mountains Foothills: along Sutter Creek near Sutter Creak Rd., 2.9 air miles NE (681/4) of town of Sutter Creek (Amador City 7.5' Q.); 0 411 Comment
  SEINET13262620 Image available Festuca myuros var. hirsuta George K. Helmkamp 2014-1 22560 Amador along Hwy E-16, 0.6 mile southwest of the junction with CA-49, c. 2.5 mi southwest of Plymouth 250 Comment
  SEINET13262878 Image available Penstemon heterophyllus subsp. purdyi George K. Helmkamp 2014-1 22937 Amador along CA-26, 0.8 mile west of the bridge over the North Fork Mokelumne River 66 Comment
  SEINET13297592 Image available Cynodon dactylon George K. Helmkamp, Elizabeth Helmkamp 2013-1 22434 Amador Sierra Nevada Mountains Foothills: Plymouth, at the junction of Mineral Street and Mill Street, near Hwy CA-49 (Amador City 7.5' Q.) 329 Comment
  SEINET1908780  Deschampsia danthonioides G. K. Helmkamp, E. A. Helmkamp 2008-1 13629 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 (Peddler Hill 7.5'Q) 1652 Comment
  SEINET2440591  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2009-8-24 15529 Amador Northern San Joaquin Valley. Lambert Road, 1.6 miles west of its junction with Carbondale Road. (Carbondale 7.5 Q.).; 0 99 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
  SEINET3238912 Image available Limnanthes alba subsp. alba George K. Helmkamp, E. A. Helmkamp 2008-5-4 13379 Amador Sierra Nevada Mountains; Barton, c. 15 miles (air) NE of Jackson, at the junction of Tiger Creek Road and Black Prince Road, 0.6 mil east of the junction of Tiger Creek Road with CA-88. 936 Comment
  SEINET3245638  Amaranthaceae G. K. Helmkamp, E. A. Helmkamp 2008-1 14303 Amador Northern Sierra Nevada Mountains Foothills: along CA-49, 0.2 mile south of Plymouth (Amador City 7.5') 314 Comment
  SEINET3245758  Polemoniaceae G. K. Helmkamp, E. A. Helmkamp 2009-1 14477 Amador San Joaquin Valley: along CA-88, 0.4 mile northeast of the San Joaquin Co. line (Goose Creek 7.5') 81 Comment
  SEINET3245919  Solidago occidentalis G. K. Helmkamp, E. A. Helmkamp 2008-1 14281 Amador San Joaquin Valley: unnamed dirt road 0.1 mile west of Buena Vista Road, 1.9 miles north of Jackson Valley Road. 128 Comment
  SEINET3271546 Image available Festuca myuros var. hirsuta George K. Helmkamp, E. A. Helmkamp 2007-4-5 11745 Amador Foothills, Northern Sierra Nevada Mountains; along CA-49, 0.2 mile west of Amador City 309 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
  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
  SEINET4560542  Mimulus breweri George K. Helmkamp, E. A. Helmkamp 2011-1 18017 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
  SEINET9258994  Phleum pratense George K. Helmkamp, Elizabeth Helmkamp 2013-1 20998 Amador Northern Sierra Nevada Mountains: Bear River Road, 1.5 road miles east of the dam for Lower Bear River Reservoir 1836 Comment
  SEINET9259440  Agrostis idahoensis George K. Helmkamp, Elizabeth Helmkamp 2013-1 20987 Amador Northern Sierra Nevada Mountains: Bear River ROad at the south end of the dam for Lower Bera River Reservoir 1783 Comment
  SEINET998808  Polygonum aviculare G. K. Helmkamp, E. A. Helmkamp 2006-1 11565 Amador Central Valley/Northern Sierra Nevada Foothills: Along CA-16 0.2 miles east of Waits Station, southwest od Plymouth (Irish Hill 7.5' Q) 305 Comment
  UCD103341  Geranium dissectum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-9 10333 Amador Northern Sierra Nevada. Grass Valley Creek, 1.2 miles east of Pine Grove along Hwy. CA-88. 762 Comment
  UCD103346  Geranium dissectum G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11794 Amador Northern Sierra Nevada Mountains. Along CA Hwy 124, 0.25 mile from its junction with Hwy 16. 252 Comment
  UCD103650  Gayophytum diffusum subsp. parviflorum G. K. Helmkamp 2007-6-29 12433 Amador Northern Sierra Nevada Mountains: Kirkwood Meadows about one mile west of Kirkwood and 0.1 mile south of CA-88. 2317 Comment
  UCD107245  Lupinus bicolor G. K. Helmkamp; Elizabeth Helmkamp 2007-4-5 11733 Amador Northern Sierra Nevada Foothills: Sutter to Ione Road, 0.4 mi east of CA-49, northeast of Ione. 180 Comment
  UCD108714  Lupinus microcarpus var. densiflorus G. K. Helmkamp; Elizabeth Helmkamp 2006-5-6 10300 Amador Northern Sierra Nevada: along Hwy CA-49, 0.3 mile south of Drytown. 226 Comment
  UCD108850  Lupinus microcarpus var. microcarpus G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11825 Amador northern Sierra Nevada Mountains: along CA E-16, 0.7 mile south of River Pines. 610 Comment
  UCD109337  Trifolium tomentosum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-6 10302 Amador Northern Sierra Nevada: along Hwy CA-49, 0.3 mile south of Drytown. 226 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
  UCD111971  Ceanothus integerrimus G. K. Helmkamp 2006-5-9 10331 Amador Northern Sierra Nevada: Grass Valley Creek, 1.2 miles east of Pine Grove along Hwy CA-88. 762 Comment
  UCD113914  Potentilla gracilis var. fastigiata G. K. Helmkamp; E. A. Helmkamp 2007-7-17 12528 Amador Northern Sierra Nevada Mtns: along CA-88 at Martin Meadow, 2.2 miles north of Silver Lake. 2317 Comment
  UCD115183  Raphanus sativus G. K. Helmkamp; E. A. Helmkamp 2006-10-23 11560 Amador Central Valley/Northern Sierra Nevada Foothills; along CA-16, 0.2 mile east of Waits Station, southwest of Plymouth. 305 Comment
  UCD117024  Acer macrophyllum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-9 10346 Amador Northern Sierra Nevada Foothills; ESE of Sacramento, 3.2 miles E of Pine Grove along CA-Hwy 88. 841 Comment
  UCD121951  Galium triflorum G. K. Helmkamp; E. A. Helmkamp 2007-8-16 12758 Amador Northern Sierra Nevada Mountains: along the south side of Bear River Reservoir just east of the spillway. 1777 Comment
  UCD123655  Collinsia sparsiflora G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11783 Amador Northern Sierra Nevada Mountains: along Bell Road beside Plymouth Creek just east of CA-49 in the vicinity of Enterprise. 302 Comment
  UCD127884  Perideridia lemmonii G. K. Helmkamp; E. A. Helmkamp 2007-7-17 12513 Amador Northern Sierra Nevada Mountains: along CA-88, 0.7 mile north of its junction with Mormon Emigrant Trail; Shot Rock trailhead. 2325 Comment
  UCD128309  Achillea millefolium G. K. Helmkamp; Elizabeth Helmkamp 2006-5-9 10361 Amador Northern Sierra Nevada Foothills: Near Enterprise, around 0.4 mile east of CA Highway 88 on an unnamed dirt road (probably Bell Road). 92 Comment
  UCD133244  Holocarpha virgata subsp. virgata G. K. Helmkamp; E. A. Helmkamp 2007-9-4 12903 Amador Northern Sierra Nevada Mountains. Along CA-49 south of Drytown and near the crossing of Sutter Creek. 241 Comment
  UCD141431  Juncus chlorocephalus G. K. Helmkamp; E. A. Helmkamp 2007-6-29 12444 Amador Northern Sierra Nevada Mountains: Kirkwood Lake, about 0.5 mile north of CA-88 on the road to the campground. 2351 Comment
  UCD95314  Eschscholzia californica G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11811 Amador Northern Sierra Nevada Mountains - junction of Tonzi Road and CA-124 about 7 miles north of Ione. 229 Comment
  UCD98736  Dysphania botrys G. K. Helmkamp; E. A. Helmkamp 2007-9-4 12895 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
  UCR173601  Lithophragma parviflorum var. parviflorum George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10164 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
  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
  UCR173608  Claytonia perfoliata subsp. perfoliata George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10166 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
  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
  UCR174009  Lupinus bicolor George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10342 Amador Northern Sierra Nevada foothills, Grass Valley Creek, 1.2 miles east of Pine Grove along Calif. Hwy 88 762 Comment
  UCR176285  Festuca arundinacea George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10358 B Amador Northern Sierra Nevada Foothills, Along Calif. Hwy 88, 0.9 mi. south of the El Dorado County line at Enterprise 274 Comment
  UCR176965  Arctostaphylos glauca George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10323 Amador Northern Sierra Nevada foothills, Climax Road southwest of Pine Grove, 0.1 mile west of Calif. Hwy 88 701 Comment
  UCR179745  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2006-10-6 11467 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
  UCR184853  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-4-26 11822 Amador Foothills, northern Sierra Nevada Mountains, along Calif. E-16, 0.7 mile south of River Pines 610 Comment
  UCR184857  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2007-4-26 11824 Amador Foothills, northern Sierra Nevada Mountains, along Calif. E-16, 0.7 mile south of River Pines 610 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
  UCR185225  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2007-4-23 11794 Amador Foothills, Northern Sierra Nevada Mountains, along Calif. Hwy 124, 0.25 mile from its junction with Hwy 16 252 Comment
  UCR188506  Castilleja tenuis George K. Helmkamp, E. A. Helmkamp 2007-7-17 12521 Amador Northern Sierra Nevada Mountains, along CA-88 at Martin Meadow, 2.2 miles north of Silver Lake 2317 Comment
  UCR188508  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2007-7-17 12513 Amador Northern Sierra Nevada Mountains, along CA-88, 0.7 mile north of its junction with Mormon Emigrant Trail; Shot Rock trailhead 2325 Comment
  UCR189463  Achillea millefolium George K. Helmkamp, E. A. Helmkamp 2007-8-16 12741 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.0 mile south of the junction with Mormon Emigrant Trail 2172 Comment
  UCR189483  Lasthenia californica George K. Helmkamp, E. A. Helmkamp 2007-3-17 11639 Amador Sacramento Valley/ Sierra Nevada Foothills, Hwy CA-24, 3.2 mi southwest of Plymouth near Tonzi Road 210 Comment
  UCR189487  Arctostaphylos viscida subsp. viscida George K. Helmkamp, E. A. Helmkamp 2007-3-17 11644 Amador Eastern Sacramento Valley, Buena Vista Road, 0.3 mile north of Buena Vista 104 Comment
  UCR189514  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2007-8-16 12751 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 3.5 miles south of its junction with Mormon Emigrant Trail 2146 Comment
  UCR190559  Leptodactylon pungens George K. Helmkamp 2007-6-29 12416 Amador Northern Sierra Nevada Mountains, Shot Rock Vista picnic area along CA-88, 0.9 miles east of its junction with Mormon Emigrant Trail 2329 Comment
  UCR190844  Penstemon roezlii George K. Helmkamp 2007-6-29 12431 Amador Northern Sierra Nevada Mountains, Sandy Cove picnic area southeast of CA-88 beside the west edge of Silver Lake 2244 Comment
  UCR191127  Scirpus microcarpus George K. Helmkamp, E. A. Helmkamp 2007-8-16 12767 Amador Northern Sierra Nevada Mountains, along the south side of Bear River Reservoir just east of the spillway 1777 Comment
  UCR191137  Leersia oryzoides George K. Helmkamp, E. A. Helmkamp 2007-8-26 12814 Amador Northern Sierra Nevada Mountains Foothills, along Hwy CA-49 at mile-20, 2.1 miles north of Plymouth; beside Blue Indian Creek 299 Comment
  UCR191140  Epilobium densiflorum George K. Helmkamp, E. A. Helmkamp 2007-8-26 12812 Amador Northern Sierra Nevada Mountains Foothills, along Hwy CA-49 at mile-20, 2.1 miles north of Plymouth; beside Blue Indian Creek 299 Comment
  UCR191155  Agrostis exarata George K. Helmkamp, E. A. Helmkamp 2007-8-16 12744 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.0 mile south of the junction with Mormon Emigrant Trail 2172 Comment
  UCR194694  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2007-10-13 13100 Amador Central Valley / Northern Sierra Nevada Foothills, along CA-124, 0.3 mile north of its junction with CA-88 and south of Ione 87 Comment
  UCR197044  Carex tumulicola George K. Helmkamp 2008-6-17 13697 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road on the branch leading to Cole Creek, 2.7 miles east of Bear River Reservoir dam 1814 Comment
  UCR197329  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2008-7-11 13786 Amador Northern Sierra Nevada Mountains, Shot Rock Vista picnic area on the south side of CA-88, 0.9 mile east of the junction of Mormon Emigrant Trail 2329 Comment
  UCR197360  Viola lobata var. lobata George K. Helmkamp, E. A. Helmkamp 2008-6-23 13718 Amador Northern Sierra Nevada Mountains, Dufrene Road, 0.1 mile south of its junction with CA-88, between Mormon Emigrant Trail and Hamms Station 2076 Comment
  UCR197529  Dudleya cymosa subsp. cymosa George K. Helmkamp, E. A. Helmkamp 2008-5-8 13429 Amador Sierra Nevada Mountains Foothills, along CA-26, 1.0 mile west of the Calaveras County line 709 Comment
  UCR197570  Dactylis glomerata George K. Helmkamp, E. A. Helmkamp 2008-6-23 13733 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
  UCR197825  Mimulus breweri George K. Helmkamp, E. A. Helmkamp 2008-7-16 13847 Amador Northern Sierra Nevada Mountains, along CA-88 at Kirkwood 2348 Comment
  UCR198451  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2008-3-12 13167 Amador Sierra Nevada Mountains Foothills, Middle Bar Road, 3.7 miles south of its junction with CA-49 just south of Jackson 345 Comment
  UCR198456  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2008-3-12 13147 Amador Foothills, northern Sierra Nevada Mountains, 0.2 mile east of the junction of Bell Road and CA-49 at Enterprise; junction of Plymouth and Pigeon Creeks 259 Comment
  UCR198458  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2008-3-12 13152 Amador Sierra Nevada Mountains Foothills, Middle Bar Road, 3.2 miles south of its junction with CA-49 at Scottsville 229 Comment
  UCR198537  Festuca myuros var. hirsuta George K. Helmkamp, E. A. Helmkamp 2008-3-12 13160 Amador Sierra Nevada Mountains Foothills, Middle Bar Road, 3.2 miles south of its junction with CA-49 at Scottsville 229 Comment
  UCR199057  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2008-5-4 13386 Amador Sierra Nevada Mountains Foothills, along Tiger Creek Road, 2.8 miles east of CA-88; at the entrance to Tiger Creek Reservoir 744 Comment
  UCR208328  Geranium molle George K. Helmkamp, E. A. Helmkamp 2009-3-26 14473 Amador San Joaquin Valley, along CA-88, 0.4 mile northeast of the San Joaquin Co. line 81 Comment
  UCR209561  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2009-8-6 15397 Amador Sierra Nevada Mountains Foothills, along Hwy CA-88, 3.1 miles northeast of CA-49 in Jackson 424 Comment
  UCR209566  Gnaphalium canescens subsp. beneolens George K. Helmkamp, E. A. Helmkamp 2009-8-6 15405 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
  UCR209571  Amaranthus albus George K. Helmkamp, E. A. Helmkamp 2009-8-24 15526 Amador Northern San Joaquin Valley, Carbondale Road, 1.2 miles south of its junction with Lambert Road 101 Comment
  UCR209578  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2009-8-24 15530 Amador Northern San Joaquin Valley, Lambert Road, 1.6 miles west of its junction with Carbondale Road 99 Comment
  UCR209581  Helianthus annuus George K. Helmkamp, E. A. Helmkamp 2009-8-24 15527 Amador Northern San Joaquin Valley, Carbondale Road, 1.2 miles south of its junction with Lambert Road 101 Comment
  UCR218213  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2010-5-31 16190 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 3.3 miles east of the village of Sutter Creek 413 Comment
  UCR219061  Carex George K. Helmkamp, E. A. Helmkamp 2009-9-15 15616 Amador Northern Sierra Nevada Mountains, Bear River Road, 0.1 mile south of its junction with CA-88 1797 Comment
  UCR219066  Agrostis variabilis George K. Helmkamp, E. A. Helmkamp 2009-9-15 15614 Amador Northern Sierra Nevada Mountains, south side of Bear River Reservoir, 0.1 mile east of the dam 1774 Comment
  UCR219068  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2009-9-15 15618 Amador Northern Sierra Nevada Mountains, Bear River Road, 0.1 mile south of its junction with CA-88 1797 Comment
  UCR219071  Dysphania botrys George K. Helmkamp, E. A. Helmkamp 2009-9-15 15621 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
  UCR219175  Eriophyllum lanatum var. grandiflorum George K. Helmkamp, E. A. Helmkamp 2010-6-23 16359 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
  UCR219185  Genista monspessulana George K. Helmkamp, E. A. Helmkamp 2010-6-23 16367 Amador Sierra Nevada Mountains Foothills, Rams Horn Grade, 1.8 rd. miles northeast of Volcano at the junction with Sutter Creek Road 730 Comment
  UCR219195  Conyza canadensis George K. Helmkamp, E. A. Helmkamp 2009-9-22 15646 Amador Sierra Nevada Mountains Foothills, junction of Shenandoah Road (CA-16) and Steiner Road, southwest of River Pines 750 Comment
  UCR230069  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2011-5-19 17308 Amador Eastern edge San Joaquin Valley at start of Sierra Nevada foothills, Pardee Dam Road, 0.2 mile south of Stony Creek Road, 5 miles SE (124 deg. ) of Ione 201 Comment
  UCR230662  Collinsia bartsiifolia var. bartsiifolia George K. Helmkamp, E. A. Helmkamp 2011-5-10 17230 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
  UCR230965  Chenopodium vulvaria George K. Helmkamp, E. A. Helmkamp 2011-6-22 17617 B 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
  UCR230975  Festuca myuros George K. Helmkamp, E. A. Helmkamp 2011-6-7 17465 Amador Northern Sierra Nevada Mountains Foothills, Pine Gulch Road, 0.5 mile north of its intersection with Sutter Creek Road 457 Comment
  UCR230995  Rumex conglomeratus George K. Helmkamp, E. A. Helmkamp 2011-6-22 17618 Amador Northern Sierra Nevada Mountains Foothills, Tonzi Road, 0.9 mile west of its junction with CA-49, c. 1.6 mi. SW (238 deg. ) of Amador City 309 Comment
  UCR232206  Claytonia perfoliata subsp. mexicana George K. Helmkamp, E. A. Helmkamp 2011-3-12 17081 Amador Northeastern San Joaquin Valley, along CA-88, 0.8 mile northeast of the San Joaquin County line, c. 3 miles north of Camanche Reservoir 81 Comment
  UCR232208  Sanicula crassicaulis George K. Helmkamp, E. A. Helmkamp 2011-6-7 17493 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
  UCR232222  Lithophragma bolanderi George K. Helmkamp, E. A. Helmkamp 2011-6-7 17494 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
  UCR232251  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2011-6-7 17491 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
  UCR233266  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2011-8-6 18005 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233268  Phacelia hastata var. compacta George K. Helmkamp, E. A. Helmkamp 2011-8-6 17998 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233673  Trifolium microcephalum George K. Helmkamp, E. A. Helmkamp 2011-8-6 17953 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR237273  Potentilla gracilis var. fastigiata George K. Helmkamp, E. A. Helmkamp 2012-7-14 19393 Amador Northern Sierra Nevada Mountains, edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 miles north of Silver Lake 2317 Comment
  UCR237277  Galium trifidum var. pacificum George K. Helmkamp, E. A. Helmkamp 2012-7-2 19299 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam of Lower Bear River Reservoir 1774 Comment
  UCR237283  Mimulus mephiticus George K. Helmkamp, E. A. Helmkamp 2012-7-2 19305 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam of Lower Bear River Reservoir 1774 Comment
  UCR237287  Streptanthus tortuosus var. orbiculatus George K. Helmkamp, E. A. Helmkamp 2012-7-2 19313 Amador Northern Sierra Nevada Mountains, Bear River Road, 0.1 mile east of the south end of the dam of Lower Bear River Reservoir 1776 Comment
  UCR237293  Juncus chlorocephalus George K. Helmkamp, E. A. Helmkamp 2012-7-2 19307 Amador Northern Sierra Nevada Mountains, Bear River Road, 0.1 mile east of the south end of the dam of Lower Bear River Reservoir 1776 Comment
  UCR237297  Cryptantha affinis George K. Helmkamp, E. A. Helmkamp 2012-7-2 19315 Amador Northern Sierra Nevada Mountains, Bear River Road, 3.0 miles east of the Lower Bear River Reservoir dam 1816 Comment
  UCR240661  Quercus lobata George K. Helmkamp, E. A. Helmkamp 2012-10-5 19969 Amador Northern Sierra Nevada Mountains Foothills, beside Sutter Creek along the Sutter Creek-Volcano Road, 0.6 mile southwest of Meadowlark Lane 421 Comment
  UCR240666  Echinochloa crus-galli George K. Helmkamp, E. A. Helmkamp 2012-10-5 19977 Amador Northern Sierra Nevada Mountains Foothills, Sutter Creek Road, 10.7 miles east of CA-49, in Sutter Creek 635 Comment
  UCR240889  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2012-6-6 19120 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.1 miles west of Cooks Station 1439 Comment
  UCR241266  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2012-9-7 19764 Amador Northern Sierra Nevada Mountains Foothills, along CA-49, 1.2 miles north of the junction with Fiddletown Road at Plymouth 299 Comment
  UCR241362  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2012-6-26 19260 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
  UCR241372  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2012-6-26 19268 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
  UCR241961  Centaurium muehlenbergii George K. Helmkamp, E. A. Helmkamp 2012-9-7 19781 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
  UCR241971  Panicum dichotomiflorum George K. Helmkamp, E. A. Helmkamp 2012-9-7 19785 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
  UCR241978  Anagallis arvensis George K. Helmkamp, E. A. Helmkamp 2012-9-7 19778 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
  UCR241981  Leontodon taraxacoides George K. Helmkamp, E. A. Helmkamp 2012-9-7 19789 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
  UCR241986  Kickxia spuria George K. Helmkamp, E. A. Helmkamp 2012-9-7 19779 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
  UCR241996  Euphorbia ocellata George K. Helmkamp, E. A. Helmkamp 2012-9-7 19767 Amador Northern Sierra Nevada Mountains Foothills, along CA-49, 1.2 miles north of the junction with Fiddletown Road at Plymouth 299 Comment
  UCR241998  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2012-9-7 19765 Amador Northern Sierra Nevada Mountains Foothills, along CA-49, 1.2 miles north of the junction with Fiddletown Road at Plymouth 299 Comment
  UCR242319  Briza minor George K. Helmkamp, E. A. Helmkamp 2011-6-17 17611 Amador Northern Sierra Nevada Mountains Foothills, junction of Pine Grove to Volcano Road and Aqueduct Road, 0.76 mi. ENE (86 deg. ) of Pine Grove 777 Comment
  UCR242356  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2010-9-1 16871 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
  UCR242605  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2010-4-3 15806 Amador Low foothills northern Sierra Nevada Mountains, 3 mi. NE (28 deg. ) of Ione, junction of CA-124 and Willow Creek Road/Mt. Echo Dr. 189 Comment
  UCR242633  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2010-4-3 15797 Amador Low foothills northern Sierra Nevada Mountains, 4.35 mi. NE (31 deg. ) of Ione, junction of Tonzi Road and CA-124/East Plymouth Hwy 180 Comment
  UCR242637  Cardamine oligosperma George K. Helmkamp, E. A. Helmkamp 2010-4-3 15809 Amador Foothills Northern Sierra Nevada Mountains, Willow Creek Road, 1.2 miles north of its junction with CA-124, 3.7 mi. NE (22 deg. ) of Ione 175 Comment
  UCR242644  Plantago erecta George K. Helmkamp, E. A. Helmkamp 2010-4-3 15801 Amador Low foothills northern Sierra Nevada Mountains, 4.35 mi. NE (31 deg. ) of Ione, junction of Tonzi Road and CA-124/East Plymouth Hwy 180 Comment
  UCR242815  Collomia George K. Helmkamp, E. A. Helmkamp 2010-9-1 16882 C 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
  UCR246403  Claytonia parviflora subsp. grandiflora George K. Helmkamp, E. A. Helmkamp 2012-3-22 18624 A 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
  UCR246407  Pentagramma triangularis George K. Helmkamp, E. A. Helmkamp 2012-3-22 18633 Amador Northern Sierra Nevada Mountains Foothills, Bell Road, 1.2 miles east of CA-49 at private road to Rancho Cicada Retreat 371 Comment
  UCR248369  Eriophyllum lanatum var. croceum George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21027 Amador Northern Sierra Nevada Mountains, Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  UCR248379  Lupinus lepidus var. sellulus George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21019 Amador Northern Sierra Nevada Mountains, Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  UCR248389  Lupinus latifolius var. columbianus George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21017 Amador Northern Sierra Nevada Mountains, Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  UCR248543  Woodwardia fimbriata George K. Helmkamp, Elizabeth Helmkamp 2013-9-13 22288 Amador Northern Sierra Nevada Mountains Foothills, Volcano Road; 0.1 mile northwest of the village of Volcano 671 Comment
  UCR250170  Anthemis cotula George K. Helmkamp, Elizabeth Helmkamp 2013-5-22 20661 Amador Northern Sierra Nevada Mtns. Foothills, Ostrom Road, 1.2 miles east of E-16 (Plymouth-Shenandoah Rd.), 1.1 mi. north (353 deg. ) of Fiddletown 572 Comment
  UCR250444  Torilis arvensis George K. Helmkamp, Elizabeth Helmkamp 2013-5-22 20660 Amador Northern Sierra Nevada Mtns. Foothills, Ostrom Road, 1.2 miles east of E-16 (Plymouth-Shenandoah Rd.), 1.1 mi. north (353 deg. ) of Fiddletown 572 Comment
  UCR250605  Lupinus bicolor George K. Helmkamp, Mary Alice Barnes 2013-4-24 20382 Amador Northern Sierra Nevada Mountains Foothills, Along CA-26 (Red Corral/West Point-Pioneer Rd.), 2.8 miles southeast of its junction with CA-88 905 Comment
  UCR250633  Carex George K. Helmkamp, E. A. Helmkamp 2007-8-16 12769 Amador Northern Sierra Nevada Mountains, along the south side of Bear River Reservoir just east of the spillway 1777 Comment
  UCR250644  Lupinus albifrons var. albifrons George K. Helmkamp, Mary Alice Barnes 2013-4-24 20385 Amador Northern Sierra Nevada Mountains Foothills, Along CA-26 (Red Corral/West Point-Pioneer Rd.), 2.8 miles southeast of its junction with CA-88 905 Comment
  UCR252963  Stachys ajugoides var. rigida George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22140 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 4.8 miles northeast of the town of Sutter Creek 405 Comment
  UCR252967  Eucephalus breweri George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20972 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 Comment
  UCR252973  Artemisia douglasiana George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22141 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 4.8 miles northeast of the town of Sutter Creek 405 Comment
  UCR252983  Holodiscus discolor George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20985 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 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
  UCR253064  Eriogonum nudum var. deductum George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22076 Amador Northern Sierra Nevada Mountains Foothills, SE of Pioneer along CA-26, north side of North Fork Mokelumne River 628 Comment
  UCR253090  Asclepias fascicularis George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22151 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 11.3 miles northeast of the town of Sutter Creek 582 Comment
  UCR253198  Daucus carota George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22136 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 4.8 miles northeast of the town of Sutter Creek 405 Comment
  UCR253203  Madia elegans subsp. densifolia George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22131 Amador Sierra Nevada Mountains Foothills, city of Sutter Creek at the junction of Hanford St. and Spanish St. 384 Comment
  UCR253235  Phleum pratense George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20998 Amador Northern Sierra Nevada Mountains, Bear River Road, 1.5 road miles east of the dam for Lower Bear River Reservoir 1837 Comment
  UCR253456  Erodium moschatum George K. Helmkamp 2014-4-5 22661 Amador Sierra Nevada Foothills, junction of Tonzi Road and CA-124, NE of Ione 201 Comment
  UCR253458  Bromus madritensis subsp. madritensis George K. Helmkamp 2014-4-5 22676 Amador Eastern San Joaquin Valley, Sutter Creek-Ione Road, 1.2 miles south of its junction with CA-124 197 Comment
  UCR253523  Dicentra formosa George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20966 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 Comment
  UCR256482  Sanicula crassicaulis George K. Helmkamp, Amy Barnes 2014-5-8 22845 Amador Sacramento Valley/Sierra Nevada Foothills, Tonzi Road, 0.4 mile east of its junction with CA-124, 4.5 air miles NE (35 deg. ) of Ione 188 Comment
  UCR256492  Pinus sabiniana George K. Helmkamp, Amy Barnes 2014-5-8 22833 Amador Sacramento Valley/Sierra Nevada Foothills, Tonzi Road, 0.4 mile east of its junction with CA-124, 4.5 air miles NE (35 deg. ) of Ione 188 Comment
  UCR256985  Luzula comosa George K. Helmkamp, Mary Alice Barnes 2013-5-13 20571 Amador Sierra Nevada Mountains, Fiddletown Road, c. 9 miles northeast of its junction with E-16/Shenandoah Rd. near Plymouth 665 Comment
  UCR256995  Aira caryophyllea George K. Helmkamp, Mary Alice Barnes 2013-5-13 20578 Amador Sierra Nevada Mountains, Fiddletown Road, c. 9 miles northeast of its junction with E-16/Shenandoah Rd. near Plymouth 665 Comment
  UCR257015  Madia rammii George K. Helmkamp, Mary Alice Barnes 2013-5-13 20569 Amador Sierra Nevada Mountains, Fiddletown Road, c. 9 miles northeast of its junction with E-16/Shenandoah Rd. near Plymouth 665 Comment
  UCR257607  Madia gracilis George K. Helmkamp, Amy Barnes 2014-5-8 22834 Amador Sacramento Valley/Sierra Nevada Foothills, Tonzi Road, 0.4 mile east of its junction with CA-124, 4.5 air miles NE (35 deg. ) of Ione 188 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
  UCR259882  Eragrostis mexicana subsp. virescens George K. Helmkamp, Elizabeth Helmkamp 2013-10-22 22451 Amador Sierra Nevada Mountains Foothills, Shenandoah Road, near Sobon Creek, 6.8 miles northeast of its junction with CA-49 in Plymouth 563 Comment
  UCR261627  Dysphania botrys George K. Helmkamp, Amy Barnes 2014-10-10 23139 Amador Northern Sierra Nevada Mountains, Plasse Road at the junction with CA-88 2311 Comment
  JEPS119467  Madia exigua George K. Helmkamp with E. A. Helmkamp 2011-6-7 17468 Amador Northern Sierra Nevada Mountains Foothills, Shake Ridge Road (Gopher Flat Rd.), 0.2 mile southwest of its junction with Pine Gulch Road, 2.2 mi. NE of Sutter Creek Comment
  SEINET7249046  Aster eatonii George K. Helmkamp, E. A. Helmkamp 2010-1 Amador Comment
  SBBG128861  Cryptantha flaccida G. K. Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte entrance to Oroville Wildlife Area, 0.2 mi W of CA-70, near the Feather River 46 Comment
  SD239775  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18739 Butte Northern Sacramento Valley: Middle Noncut Road, 1.5 miles east of CA-70, ESE of Gridley. 17 Comment
  SEINET3412001 Image available Bromus madritensis subsp. rubens George K. Helmkamp, E. A. Helmkamp 2012-4-14 18764 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  UCR188501  Chenopodium missouriense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13065 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  UCR188556  Phytolacca americana George K. Helmkamp, E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  UCR219091  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15580 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  UCR219096  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-5 15573 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  UCR219098  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15595 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  CAS-BOT-BC229021  Silene verecunda George K. Helmkamp; Ann Kerchner; Amy Barnes 2011-8-13 18058 Calaveras Northern Sierra Nevada Mountains: Black Springs Road (Forest Route 6N45?), 1.7 miles north of its junction with CA Hwy 4 2058 Comment
  CAS-BOT-BC334221  Eriogonum nudum var. nudum George K. Helmkamp; Amy Barnes 2013-9-24 22378 Calaveras Northern Sierra Nevada Mountains: N end of White Pines Reservoir, 0.6 mi N of Arnold 1186 Comment
  CAS-BOT-BC500068  Dichelostemma capitatum G. K. Helmkamp; E. A. Helmkamp 2008-5-22 13210 Calaveras San Joaquin Valley/Sierra Nevada Mountains Foothills: 1.8 miles north of Burson via Burson Rd., at the junction of Comanche Parkway South and Pattison Way. 122 Comment
  JEPS119453  Madia subspicata George K. Helmkamp with E. A. Helmkamp 2011-7-12 17737 Calaveras Northern Sierra Nevada Mountains: Winton Road (Forest Route 7N03), 16.2 miles east of its junction with CA-26 in West Point. Comment
  JEPS119470  Madia elegans subsp. densifolia George K. Helmkamp with E. A. Helmkamp 2010-10-6 17003 Calaveras n SNF: Along CA-26, 0.6 mi east of CA-49 at Mokelumne Hill. Comment
  RSA0035735  Trifolium glomeratum George K. Helmkamp, Elizabeth A. Helmkamp 2013-5-24 20704 Calaveras North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  RSA0049946  Madia yosemitana George K. Helmkamp, E. A. Helmkamp 2012-5-31 19114 Calaveras Lily Gap Road, 0.9 mile northeast of its junction with Winton Road, 8.1 km NE (60 deg ) of West Point 1133 Comment
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Nov 1 2018
  RSA779400  Agrostis variabilis George K. Helmkamp, E. A. Helmkamp 2009-7-30 15345 Calaveras Forestry Route 6N45, just north of its junction with CA-44, 15.1 miles northeast of Arnold 2018 Comment
  RSA794915  Madia rammii George K. Helmkamp, E. A. Helmkamp 2011-7-12 17704 Calaveras Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 Comment
  SBBG128615  Agrostis stolonifera G. K. Helmkamp, E. A. Helmkamp 2011-7-12 17713 Calaveras Winton Rd, 6.7 mi E of its jct with CA-26 in W Point 1192 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
  SD235030  Castilleja foliolosa G. K. Helmkamp, E. A. Helmkamp 2008-4-11 13263 Calaveras Sierra Nevada Mountains Foothills: along Fricot City Road, 1.3 miles east of its junction with Calaveritas road. 423 Comment
  SD236435  Plectritis congesta subsp. brachystemon G. K. Helmkamp, E. A. Helmkamp 2008-3-18 13198 Calaveras Sierra Nevada Mountains Foothills: along CA-49 at the crossing of the North Fork of the Calaveras river, 8.3 miles south of Mokelumne Hill 235 Comment
  SD239810  Limnanthes alba subsp. alba George K. Helmkamp, E. A. Helmkamp 2011-5-21 17343 Calaveras Northern Sierra Nevada Mountains Foothills: Railroad Flat Road at the junction with Cedar Ridge Road, 10.5 miles ENE (87a^z) of Mokelumne Hill (Rail Road Flat 7.5'Q) 846 Comment
  SD240990  Acmispon americanus George K. Helmkamp, E. A. Helmkamp 2010-10-6 170006 Calaveras Northern Sierra Nevada Mountains Foothills: along CA-26 (Stephen P. Teale Hwy), 0.6 mile east of CA-49 at Mokelumne Hill (Mokelumne Hill 7.5'Q) 483 Comment
  SD241027  Trifolium variegatum George K. Helmkamp, E. A. Helmkamp 2011-7-12 17710 Calaveras Northern Sierra Nevada Mountains Foothills: Winton Road, 6.7 miles east of its junction with CA-26 in West Point. 1192 Comment
  SD260207  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 Road junction with CA-26, south of Rancho Calaveras & east of Linden (Jenny Lind 7.5'Q) 102 Comment
  SEINET13203105 Image available Clarkia purpurea subsp. quadrivulnera George K. Helmkamp 2014-1 22885 Calaveras Sierra Nevada Mountains Foothills: along CA-26, 2.6 miles northeast of CA-49 at Mokelumne Hill (Mokelumne Hill 7.5' Q.) 518 Comment
  SEINET13203131 Image available Elymus glaucus subsp. glaucus George K. Helmkamp 2014-1 22893 Calaveras Sierra Nevada Mountains Foothills: between Sandy Gulch and Glencoe along CA-26, 0.1 mile north of the bridge over South Fork Mokelumne River (Rail Road Flat 7.5' Q.) 608 Comment
  SEINET13262656 Image available Avena fatua George K. Helmkamp, Elizabeth Helmkamp 2013-1 20212 Calaveras Milton, Jenny Lind Road (Milton Rd.), 7.4 miles south of its junction with CA-26 120 Comment
  SEINET1908716  Lasthenia platycarpha G. K. Helmkamp, E. A. Helmkamp 2008-1 13216 Calaveras San Joaquin Valley/Sierra Nevada Mountains Foothills: 1.8 miles north of Burson via Burson Rd., at junction of Comanche Parkway South and Pattison Way 122 Comment
  SEINET3817940 Image available Deschampsia elongata George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18052 Calaveras Northern Sierra Nevada Mountains, Black Springs Road (Forest Route 6N45?), 1.7 miles north of its junction with CA Hwy 4 (Calaveras Dome 7.5' Q. 2057 Comment
  SEINET3828542  Euphorbia oblongata George K. Helmkamp, E. A. Helmkamp 2012-1 18983 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. (San Andreas 7.5') 351 Comment
  SEINET3860012  Amsinckia menziesii var. menziesii George K. Helmkamp, Amy Barnes 2010-5-7 15964 Calaveras Sierra Nevada Mountains Foothills: along CA-49, 0.4 mile north of its junction with CA-12, vicinity of San Andreas.; 0 233 Comment
  SEINET3860094  Lupinus nanus George K. Helmkamp, Amy Barnes 2010-5-7 15988 Calaveras Sierra Nevada Mountains Foothills: Michel Road, 0.1 mile east of its junction with Mountain Ranch Road. 5.2 mi. east of San Andreas.; 0 512 Comment
  SEINET3860172  Lupinus albifrons var. albifrons George K. Helmkamp, Amy Barnes 2010-5-7 15974 Calaveras Sierra Nevada Mountains Foothills: along CA-49, 0.4 mile north of its junction with CA-12, vicinity of San Andreas.; 0 233 Comment
  SEINET3860277  Phacelia cicutaria George K. Helmkamp, Amy Barnes 2010-5-7 16004 Calaveras Sierra Nevada Mountains Foothills: Mountain Ranch Road, 3.2 miles east of San Andreas.; 0 436 Comment
  SEINET4691461  Baccharis pilularis George K. Helmkamp, E. A. Helmkamp 2010-1 17014 Calaveras Northern Sierra Nevada Mountains Foothills: along CA-26 (Stephen P. Teale Hwy) at the crossing of North Fork Mokelumne River. 802 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
  UC1931000  Lessingia leptoclada G. K. Helmkamp, E. A. Helmkamp 2006-10-8 11497 Calaveras Northern Sierra Nevada Mountains Foothills: along Hwy CA-26 at the West Branch of the Mokulumne River, about 15 miles west of CA-49 Comment
  UC2044603  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 mi. NE of Stockton. (Valley Springs SW 7.5' Q.) Comment
  UC2044625  Madia gracilis George K. Helmkamp with E. A. Helmkamp 2011-6-17 17570 Calaveras Northern Sierra Nevada Mountains Foothills Winton Road, 0.8 mile northeast of CA-26 at West Point. (West Point 7.5' Q.) Comment
  UCD105120  Clarkia williamsonii G. K. Helmkamp; E. A. Helmkamp 2006-6-29 10793 Calaveras Northern Sierra Nevada Mountains Foothills. Along Hwy CA-26, 0.6 mile past Sandy Gulch. 793 Comment
  UCD107250  Lupinus bicolor G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11843 Calaveras Northern Sierra Nevada Mountains: Chili Gulch near McSorley Ranch, along Hwy. CA-49, 5.1 miles south of the Amador County line. 370 Comment
  UCD113785  Rubus laciniatus G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-29 10799 Calaveras Northern Sierra Nevada Foothills; along highway CA-26, 0.2 mile north of West Point. 838 Comment
  UCD132800  Helianthus annuus G. K. Helmkamp; E. A. Helmkamp 2007-9-24 12999 Calaveras Northern Sierra Nevada Mountains: along Hwy. CA-49, 0.5 mile west (northbound route) of Mokelumne Hill. 396 Comment
  UCD134074  Lessingia leptoclada G. K. Helmkamp; E. A. Helmkamp 2006-10-8 11497 Calaveras Northern Sierra Nevada Mountains Foothills; along Hwy CA-26 at the West Branch of the Mokulumne River, about 15 miles west of CA-49. 710 Comment
  UCR174927  Convolvulus arvensis George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10787 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 12.3 miles east of the Mokelumne Hill turnoff from Calif. Hwy 49 640 Comment
  UCR174933  Philadelphus lewisii George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10777 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 12.3 miles east of the Mokelumne Hill turnoff from Calif. Hwy 49 640 Comment
  UCR174937  Achillea millefolium George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10778 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 12.3 miles east of the Mokelumne Hill turnoff from Calif. Hwy 49 640 Comment
  UCR188519  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2007-9-24 13000 Calaveras Foothills, northern Sierra Nevada Mountains, along Hwy CA-49, 0.5 mile west (northbound route) of Mokelumne Hill 396 Comment
  UCR188522  Quercus douglasii George K. Helmkamp, E. A. Helmkamp 2007-9-24 13003 Calaveras Foothills, northern Sierra Nevada Mountains, along Hwy CA-49, 0.5 mile west (northbound route) of Mokelumne Hill 396 Comment
  UCR189467  Crassula connata George K. Helmkamp, E. A. Helmkamp 2007-3-17 11653 Calaveras Eastern Sacramento Valley, about 1 mile north of Burson on the road to south Comanche Reservoir 152 Comment
  UCR189649  Plantago erecta George K. Helmkamp, E. A. Helmkamp 2007-3-17 11656 Calaveras Eastern Sacramento Valley, about 1 mile north of Burson on the road to south Comanche Reservoir 152 Comment
  UCR197339  Euphorbia oblongata George K. Helmkamp, E. A. Helmkamp 2008-5-8 13406 Calaveras Sierra Nevada Mountains Foothills, along CA-26, 1.7 miles northeast of Glencoe 674 Comment
  UCR197364  Lathyrus latifolius George K. Helmkamp, E. A. Helmkamp 2008-5-29 13519 Calaveras Sierra Nevada Mountains, Arnold Way Road parallel to CA-4 (Ebbetts Pass Hwy), 0.8 mile northeast of Arnold 1265 Comment
  UCR197390  Stellaria media George K. Helmkamp, E. A. Helmkamp 2008-3-18 13181 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
  UCR197394  Nemophila menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2008-3-18 13187 Calaveras Sierra Nevada Mountains Foothills, Jesus Maria Road, 2.4 miles southeast of its junction with CA-26; beside Jesus Maria Creek 305 Comment
  UCR197413  Plectritis brachystemon George K. Helmkamp, E. A. Helmkamp 2008-3-18 13198 Calaveras Sierra Nevada Mountains Foothills, along CA-49 at the crossing of the North Fork of the Calaveras river; 8.3 miles south of Mokelumne Hill 235 Comment
  UCR197417  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 2008-3-22 13203 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
  UCR197539  Salix laevigata George K. Helmkamp, E. A. Helmkamp 2008-3-22 13232 Calaveras San Joaquin Valley / Sierra Nevada Mountains Foothills, along Farris Road, 0.2 mile southeast of CA-26, 5.7 miles southwest of Valley Springs 142 Comment
  UCR197574  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2008-5-29 13507 Calaveras Sierra Nevada Mountains Foothills, 0.6 mile southeast of CA-4 at Red Apple, on road to Darby Knob 991 Comment
  UCR197580  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2008-5-29 13536 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road parallel to CA-4 and 0.4 mile from the road junction; at the Utica Creek crossing 759 Comment
  UCR197590  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2008-5-29 13532 Calaveras Sierra Nevada Mountains, along the north side of CA-4 (Ebbetts Pass Rd.) at Avery 1024 Comment
  UCR197803  Athysanus pusillus George K. Helmkamp, E. A. Helmkamp 2008-5-8 13419 A Calaveras Sierra Nevada Mountains Foothills, Skull Flat road, 0.4 mile north of it junction with Winton Road, northeast of West Point 823 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
  UCR197835  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2008-3-22 13238 Calaveras Sierra Nevada Mountains Foothills, along Mokelumne Vista Road at the junction with CA-49, just west of Mokelumne Hill village 479 Comment
  UCR198408  Arctostaphylos manzanita subsp. manzanita George K. Helmkamp, E. A. Helmkamp 2008-4-11 13265 Calaveras Sierra Nevada Mountains Foothills, at the junction of Fricot City Road and San Antone Camp Road, beside Antonio Creek 488 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
  UCR207052  Cirsium vulgare George K. Helmkamp, E. A. Helmkamp 2009-7-30 15311 Calaveras Sierra Nevada Mountains, Ottawa Drive, 0.1 mile south of its junction with CA-4, 1.2 miles northeast of Dorrington 1471 Comment
  UCR215804  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2009-7-30 15332 Calaveras Sierra Nevada Mountains, Ganns Meadow Drive just south of its junction with CA-4, 16.7 miles northeast of Arnold 2067 Comment
  UCR215805  Lupinus lepidus var. sellulus George K. Helmkamp, E. A. Helmkamp 2009-7-30 15330 Calaveras Sierra Nevada Mountains, Ganns Meadow Drive just south of its junction with CA-4, 16.7 miles northeast of Arnold 2067 Comment
  UCR218153  Lupinus albifrons var. albifrons George K. Helmkamp, Amy Barnes 2010-5-7 15974 Calaveras Sierra Nevada Mountains Foothills, along CA-49, 0.4 mile north of its junction with CA-12, vicinity of San Andreas 233 Comment
  UCR218157  Claytonia parviflora subsp. parviflora George K. Helmkamp, Amy Barnes 2010-5-7 15989 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
  UCR230142  Mimulus bicolor George K. Helmkamp, E. A. Helmkamp 2011-5-21 17346 Calaveras Northern Sierra Nevada Mountains Foothills, Railroad Flat Road at the junction with Cedar Ridge Road, 10.5 mi. ENE (87 deg. ) of Mokelumne Hill 846 Comment
  UCR231100  Cerastium fontanum George K. Helmkamp, E. A. Helmkamp 2011-9-16 18276 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
  UCR231104  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2011-9-16 18273 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
  UCR231105  Trientalis latifolia George K. Helmkamp, E. A. Helmkamp 2011-9-16 18272 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
  UCR232256  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp 2010-8-3 16705 Calaveras Northern Sierra Nevada Mountains, Forest Route 7N23 (Black Creek Road) 0.1 mile north of the junction with CA-4 2005 Comment
  UCR232258  Agrostis gigantea George K. Helmkamp, E. A. Helmkamp 2010-8-3 16703 Calaveras Northern Sierra Nevada Mountains, Forest Route 7N23 (Black Creek Road) 0.1 mile north of the junction with CA-4 2005 Comment
  UCR233165B  Spiranthes porrifolia George K. Helmkamp, E. A. Helmkamp 2011-7-12 17701 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 Comment
  UCR233261  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2011-7-12 17708 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 Comment
  UCR233362  Cerastium fontanum subsp. vulgare George K. Helmkamp, E. A. Helmkamp 2011-9-16 18290 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
  UCR233372  Juncus tenuis George K. Helmkamp, E. A. Helmkamp 2011-9-16 18285 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
  UCR235445  Euphorbia oblongata George K. Helmkamp, E. A. Helmkamp 2012-5-15 18983 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
  UCR235450  Valerianella locusta George K. Helmkamp, E. A. Helmkamp 2012-5-15 18978 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 Comment
  UCR235454  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2012-5-15 18987 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
  UCR238441  Galium aparine George K. Helmkamp, E. A. Helmkamp 2012-4-4 18695 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238446  Plantago erecta George K. Helmkamp, E. A. Helmkamp 2012-4-4 18700 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238448  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2012-4-4 18702 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238920  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2012-2-3 18528 Calaveras San Joaquin Valley/Sierra Nevada Foothills, junction of Paloma Road and Gillam Road, NE of Valley Springs & SE of Pardee Reservoir 285 Comment
  UCR240698  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2012-9-1 19747 Calaveras Northern Sierra Nevada Mountains Foothills, along Winton Road, 0.3 mile east of its junction with Lily Gap Road, 6.4 miles NE (66 deg. ) of West Point 1314 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
  UCR241314  Croton setiger George K. Helmkamp, E. A. Helmkamp 2012-9-20 19867 Calaveras Northern Sierra Nevada Mountains Foothills, trailhead parking area at the west side of CA-49, south of the bridge over the Mokelumne River, NW of Mokelumne Hill 564 Comment
  UCR242322  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2011-6-17 17595 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
  UCR242623  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-6-17 17582 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26, 2.7 road miles northwest (1.7 air miles, 312 deg. ) of West Point 802 Comment
  UCR242640  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-6-17 17560 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 3.7 miles northeast of CA-26 at West Point 1012 Comment
  UCR245499  Ranunculus eschscholtzii var. oxynotus George K. Helmkamp, Amy Barnes 2013-9-24 22360 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR245720  Agrostis stolonifera George K. Helmkamp, Amy Barnes 2013-9-24 22349 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR245861  Eriogonum nudum var. nudum George K. Helmkamp, Amy Barnes 2013-9-24 22378 Calaveras Northern Sierra Nevada Mountains, north end of White Pine Reservoir, 0.6 mile north of Arnold 1186 Comment
  UCR249564  Lepidium nitidum var. nitidum George K. Helmkamp 2013-3-14 20183 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 91 Comment
  UCR250356  Aegilops triuncialis George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20713 Calaveras Northern Sierra Nevada Mountains Foothills, North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  UCR250358  Eschscholzia californica George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20710 Calaveras Northern Sierra Nevada Mountains Foothills, North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  UCR250623  Rumex acetosella George K. Helmkamp, Mary Alice Barnes 2013-4-24 20400 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 1.9 miles east of its junction with CA-26 in West Point 652 Comment
  UCR250627  Fragaria vesca George K. Helmkamp, Mary Alice Barnes 2013-4-24 20406 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 1.9 miles east of its junction with CA-26 in West Point 652 Comment
  UCR250655  Collomia heterophylla George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20684 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
  UCR253253  Dryopteris arguta George K. Helmkamp, Amy Barnes 2013-9-23 22313 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR253537  Paspalum dilatatum George K. Helmkamp, Amy Barnes 2013-9-23 22308 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR253555  Artemisia douglasiana George K. Helmkamp, Amy Barnes 2013-9-23 22300 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR256672  Eschscholzia caespitosa George K. Helmkamp, Mary Alice Barnes 2013-5-17 20633 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
  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
  UCR257062  Salix gooddingii George K. Helmkamp, Mary Alice Barnes 2013-5-17 20622 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
  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
  UCR257206  Geranium molle George K. Helmkamp 2014-5-17 22909 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
  UCR87687  Collomia grandiflora 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
  UCR87689  Viola purpurea subsp. quercetorum George K. Helmkamp, E. A. Helmkamp 1995-6-22 95- 4 -18 Calaveras Sierra Nevada Mtns, along Calif. Hwy 4, 2.5 mi NE of Arnold 1479 Comment
  UCR87694  Festuca microstachys George K. Helmkamp, E. A. Helmkamp 1995-6-22 95- 4 -7 Calaveras Sierra Nevada Mtns, along Calif. Hwy 4, 2.5 mi NE of Arnold 1479 Comment
  UCSB69524  Triphysaria eriantha subsp. eriantha Helmkamp, G.; Helmkamp, E. 2007-3-17 Calaveras Eastern Sacramento Valley: about 1 mile north of Burson on the road to south Comanche Reservoir 152 Comment
  CDA25791  Abutilon theophrasti G. K. Helmkamp, E. A. Helmkamp 2008-10-14 14263 Colusa Sacramento Valley; Along River Road (generally following the Sacramento River), 8.4 miles north of Colusa. Comment
  JEPS119421  Lagophylla ramosissima G. K. Helmkamp, E. A. Helmkamp 2009-5-20 14740 Colusa Central Inner Coast Ranges, along CA-16 near Bear Creek, 1.6 miles south of the junction with CA-20 Comment
  RSA758531  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2009-3-11 14372 Colusa along CA-20, 14.3 miles southwest of Williams 375 Comment
  SEINET1908437  Lepidium latifolium G. K. Helmkamp, E. A. Helmkamp 2008-1 14257 Colusa Sacramento Valley: along River Road (generally following the Sacramento River), 1.1 miles north of Colusa 18 Comment
  UCR206369  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2009-3-11 14367 Colusa Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams, on the north side of Salt Creek 162 Comment
  UCR206379  Marrubium vulgare George K. Helmkamp, E. A. Helmkamp 2009-5-20 14757 Colusa Inner North Coast Ranges, along CA-16, 1.8 miles north of the Yolo County line 271 Comment
  UCR206399  Cercis occidentalis George K. Helmkamp, E. A. Helmkamp 2009-3-11 14378 Colusa Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams beside Salt Creek 107 Comment
  UCR206895  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2009-3-11 14361 Colusa Sacramento Valley, along CA-20, 1.6 miles southwest of Colusa and just north of Colusa National Wildlife Refuge 15 Comment
  UCR233291  Lepidium lasiocarpum George K. Helmkamp, E. A. Helmkamp 2011-4-1 17134 Colusa Eastern foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 2.0 miles southeast of Sites 85 Comment
  UCR233449  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 2011-4-1 17123 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 0.4 miles southeast of Sites 93 Comment
  CAS-BOT-BC175711  Clarkia purpurea subsp. quadrivulnera G. K. Helmkamp; E. A. Helmkamp 2007-5-27 12153 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
  CAS-BOT-BC226807  Nemophila pulchella var. fremontii George K. Helmkamp; E. A. Helmkamp 2011-4-12 17177 El Dorado Foothills Northern Sierra Nevada Mountains: Placerville, along Forni Road, 0.2 mile northwest of its Weber Creek crossing, SE of Hwy 50 near Diamond Springs 488 Comment
  CAS-BOT-BC226953  Polypodium glycyrrhiza George K. Helmkamp; E. A. Helmkamp 2012-4-27 18867 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
  CAS-BOT-BC228559  Lapsana communis George K. Helmkamp; E. A. Helmkamp 2011-7-2 17628 El Dorado Northern Sierra Nevada Mountains Foothills: Forni Road at Weber Creek crossing, 1.3 miles south of its Placerville junction with US-50 473 Comment
  CAS-BOT-BC228600  Ericameria arborescens George K. Helmkamp; E. A. Helmkamp 2010-9-30 16985 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 1.2 miles south of its junction with Peavine Road, 0.9 mi. (air) N of I-50 1448 Comment
  CAS-BOT-BC235618  Keckiella breviflora var. breviflora G. K. Helmkamp; E. A. Helmkamp 2009-6-29 15059 El Dorado Sierra Nevada Mountains Foothills: Ice House Road, 0.2 miles north of its junction with CA-50, c. 73 miles ENE (83 deg. ) of Pollock Pines 989 Comment
  CAS-BOT-BC334215  Aira caryophyllea George K. Helmkamp; Laurel Bezdecheck 2010-5-29 16121 El Dorado Sierra Nevada Mountains foothills: Slug Gulch Road, 4.7 rd miles E of its junction with Perry Creek road, air 3.9 mi ESE (90 deg. ) of Fair Play 1082 Comment
  CAS-BOT-BC364302  Senecio triangularis G. K. Helmkamp; E. A. Helmkamp 2008-7-11 13766 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
  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-BC438807  Lupinus albifrons var. collinus George K. Helmkamp; Elizabeth Helmkamp 2013-6-19 20889 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
  CAS-BOT-BC444020  Poa secunda George K. Helmkamp; Elizabeth Helmkamp 2013-6-19 20894 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail, 8.3 miles east of its junction with Hwy E-16 at Jenkinsons Lake. 443 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-BC523883  Lycopus americanus George K. Helmkamp; E. A. Helmkamp 2012-9-15 19831 El Dorado Northern Sierra Nevada Mountains Foothills: Walton Lake; along Balderson Rd, 0.4 mi S of its jct with Wentworth Springs Rd 950 Comment
  CDA35802  Vicia benghalensis G. K. Helmkamp, E. A. Helmkamp 2007-4-3 11902 El Dorado Foothills, Northern Sierra Nevada Mountains; Hiking trail leaving from CA Highway 49, 3.4 miles northwest of Placerville. Comment
  CDA35803  Trifolium dubium G. K. Helmkamp, E. A. Helmkamp 2007-4-3 11894 El Dorado Foothills, Northern Sierra Nevada Mountains; Hiking trail leaving from CA Highway 49, 3.4 miles northwest of Placerville. Comment
  CHSC118018  Epilobium brachycarpum G. K Helmkamp; E. A Helmkamp 2007-9-19 12983 El Dorado Foothills, northern Sierra Nevada Mountains; along Greenstone Road just south of its junction with US-50 (east of Shingle Springs) 427 Comment
  HSC101352  Quercus kelloggii G. K. Helmkamp, E. A. Helmkamp 2009-10-16 15686 El Dorado Sierra Nevada Mountains Foothillls: 6.2 air mi. SE (135 deg. ) of Shingle Springs, along CA-49, 0.9 mile north of the junction with Sand Ridge Road. 354 Comment
  HSC104173  Lepidium virginicum var. virginicum G. K. Helmkamp, E. A. Helmkamp 2012-8-4 19572 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail, 1.4 mi. W of its junction with CA-88 2287 Comment
  JEPS119417  Madia gracilis G. K. Helmkamp, E. A. Helmkamp 2009-5-24 14780 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.3 miles eat of the Cosumnes River and CA-49 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
  OBI83550  Erigeron breweri var. breweri George K. Helmkamp, Elizabeth Helmkamp 2013-7-22 22017 El Dorado dirt track on the south side of Mormon Emigrant Trail, about 0.1 mi. east of Silver Fork Road 2186 Comment
  RSA0011959  Aquilegia formosa George K. Helmkamp, E. A. Helmkamp 2011-9-13 18249 El Dorado Mormon Emigrant Trail, 22.6 miles southeast of Jenkinson's Lake, between Silver Fork Road and Hwy 88, 0.2 mi. NNE (23deg.) of Alder Hill. 2274 Comment
  RSA0011964  Rorippa curvipes var. curvipes George K. Helmkamp, E. A. Helmkamp 2011-9-13 18267 El Dorado Foster Meadow Road, 0.6 miles north of its junction with CA-88 2136 Comment
  RSA0011984  Muhlenbergia andina George K. Helmkamp, E. A. Helmkamp 2011-9-1 18229 El Dorado Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  RSA0012012  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 2011-9-13 18245 El Dorado 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
  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
  RSA0035663  Hesperolinon micranthum George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-19 20890 El Dorado Mormon Emigrant Trail, 8.3 miles east of its junction with Hwy E-16 at Jenkinsons Lake 1456 Comment
  RSA0035731  Calochortus monophyllus George K. Helmkamp, Mary Alice Barnes 2013-5-10 20528 El Dorado Wentworth Springs Road, 3.4 miles east of Georgetown 983 Comment
  RSA0042820  Madia gracilis George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-19 20883 El Dorado Mormon Emigrant Trail, 8.3 miles east of its junction with Hwy E-16 at Jenkinsons Lake 1456 Comment
  RSA0043186  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2009-5-14 14694 El Dorado hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  RSA0044615  Aster foliaceus var. parryi George K. Helmkamp, Elizabeth A. Helmkamp 2013-9-7 22269 El Dorado Northern Sierra Nevada Mountains: east side of Mormon Emigrant Trail, 2.7 miles west of its junction with CA-88/Carson Pass Hwy. 2264 Comment
  RSA0045143  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2012-7-6 19335 El Dorado Ice House Road at Ice House village, 10.5 miles north of its junction with US-50. 1677 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
  RSA0050419  Digitaria sanguinalis George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-17 20881 El Dorado Pleasant Valley, junction of Pleasant Valley Road and Hwy E-16 750 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
  RSA715233  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2005-9-12 9858 El Dorado Northern Sierra Nevada Foothills, E of Sacramento, Sly Park road (County Hwy E-16) 2 miles E of Pleasant Valley. 854 Comment
  RSA715237  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2005-9-12 9857 El Dorado Northern Sierra Nevada Foothills, E of Sacramento, Sly Park road (County Hwy E-16) 2 miles E of Pleasant Valley. 854 Comment
  RSA715240  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2005-7-31 9754 El Dorado 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. Northern Sierra Nevada Foothills. 1610 Comment
  RSA747379  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13907 El Dorado Northern Sierra Nevada Mountains: Wrights Lake Road, 3.4 miles north of its junction with CA Hwy 50. 2043 Comment
  RSA748975  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-4-30 11894 El Dorado hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  RSA748985  Lamium purpureum George K. Helmkamp, E. A. Helmkamp 2007-5-1 11915 El Dorado along Hwy CA-49, 6.1 miles northwest of Placerville 454 Comment
  RSA751280  Euphorbia serpillifolia subsp. serpillifolia George K. Helmkamp, E. A. Helmkamp 2008-8-30 14049 El Dorado along Mormon Emigrant Trail 2.4 miles northwest of its junction with CA-88 2271 Comment
  RSA752641  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2008-4-25 13327 El Dorado along Bear Creek Road 0.4 mile southeast of its junction with Meadow Brook Road, SE of Georgetown. 747 Comment
  RSA755553  Lupinus latifolius var. columbianus George K. Helmkamp, E. A. Helmkamp 2009-8-19 15494 El Dorado Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  RSA756063  Scleranthus annuus George K. Helmkamp, E. A. Helmkamp 2009-4-4 14492 El Dorado Happy Valley Cut-off, 0.6 mile southeast of its junction with Mt. Aukum Road, c. 1.8 mi due south of Pleasant Valley 591 Comment
  RSA757002  Trifolium repens George K. Helmkamp, Amy Barnes 2009-7-8 15141 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
  RSA781119  Eriodictyon californicum George K. Helmkamp, E. A. Helmkamp 2010-4-23 15925 El Dorado Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  RSA781218  Gilia leptalea subsp. bicolor George K. Helmkamp, E. A. Helmkamp 2010-7-23 16589 El Dorado trailhead at the east end of Wright's Lake, 1.2 miles north of the visitor's center at the lake entrance 2127 Comment
  RSA781312  Erigeron lassenianus var. lassenianus George K. Helmkamp, E. A. Helmkamp 2009-7-22 15272 El Dorado Wrights Lake Road, 1.2 miles south of Wrights Lake 2073 Comment
  RSA781384  Juncus macrandrus George K. Helmkamp, E. A. Helmkamp 2008-8-1 13933 El Dorado Wright s Lake Road, 3.8 miles north of its junction with CA-50 2076 Comment
  RSA785401  Trifolium ciliolatum George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16329 El Dorado Sierra Nevada Mtns Foothills: about 0.1 mi S of Slug Gulch Road at a point 4.7 mi E of its junction with Perry Creek Road. 1021 Comment
  RSA785406  Agoseris grandiflora var. grandiflora George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16331 El Dorado Sierra Nevada Mtns Foothills: about 0.1 mi S of Slug Gulch Road at a point 4.7 mi E of its junction with Perry Creek Road. 1021 Comment
  RSA785622  Gilia capitata subsp. mediomontana George K. Helmkamp, Mary Alice Barnes, Mary Jane Ganibe 2010-7-6 16449 El Dorado Silver Fork Road, 1.9 miles south of its junction with US-50 in Kyburz. 1473 Comment
  RSA789797  Madia gracilis George 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. 473 Comment
  RSA791760  Monardella odoratissima subsp. odoratissima George K. Helmkamp, E. A. Helmkamp 2006-7-7 10817 El Dorado Northern Sierra Nevada Mountains.: Wright s Lake Road, 3.2 miles north of Highway US-50, northeast of Kyburz 1982 Comment
  RSA792183  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2011-7-30 17914 El Dorado Omo Ranch Road at the junction with North-South Road, 0.67 mi. NW (300 deg ) of jct. with Hwy 88; 8.9 miles southeast of Omo Ranch 1457 Comment
  RSA792248  Gilia capillaris George K. Helmkamp, E. A. Helmkamp 2006-7-10 10918 El Dorado Northern Sierra Nevada Mountains: 0.5 miles east of junction of Wright's Lake Road and the road from Ice House Reservoir. 2056 Comment
  SBBG125690  Kelloggia galioides G. K. Helmkamp with E. A. Helmkamp 2009-6-29 15076 El Dorado Ice House Rd, 7.6 mi N of its juction with CA 50, ca. 10.5 air mi NE (74 deg) of Pollock Pines 1642 Comment
  SBBG128865  Lasthenia gracilis G. K. Helmkamp, E. A. Helmkamp 2012-4-24 18830 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
  SD197676  Erigeron breweri G. K. Helmkamp, E. A. Helmkamp 2008-8-1 13958 El Dorado Northern Sierra Nevada Mountains: Forestry Route 42 at Silver Creek, 0.2 miles west of the junction with Wright's Lake Road. 2021 Comment
  SD212457  Perideridia parishii G. K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9929 El Dorado Northern Sierra Nevada Mountains; Wright's Lake Tie Road, 1.0 mile west of its junction with Wright's Lake Road. 2043 Comment
  SD212459  Scandix pecten-veneris G. K. Helmkamp, Elizabeth Helmkamp 2006-4-25 10219 El Dorado Northern Sierra Nevada Foothills; east of Sacramento, southwest of Placrville. Forni road between US Highway 50 and Diamond Springs at Weber Creek. 487 Comment
  SD212623  Trifolium hirtum G. K. Helmkamp, Elizabeth Helmkamp 2006-5-4 10293 El Dorado East end of Diamond Springs, 0.1 mile north of the junction of Pleasant Valley Road and Highway CA 49. 543 Comment
  SD212630  Quercus wislizeni var. wislizeni G. K. Helmkamp, Elizabeth Helmkamp 2006-5-4 10291 El Dorado East end of Diamond Springs, 0.1 mile north of the junction of Pleasant Valley Road and Highway Ca 49. 543 Comment
  SD212650  Mentha pulegium G. K. Helmkamp, Elizabeth Helmkamp 2005-8-14 9810 El Dorado Diamond Springs; Lake Oaks mobile home park. 520 Comment
  SD233875  Umbellularia californica G. K. Helmkamp, Elizabeth Helmkamp 2006-4-13 10187 El Dorado Northern Sierra Nevada Foothills: El Dorado National Forest, along Volcanoville Road, 7.7 mi N of Wentworth Springs road (NE of Georgetown). 915 Comment
  SD234498  Montia parvifolia G. K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10556 El Dorado Northern Sierra Nevada foothills: Along Hwy US - 50 at Bridal Veil Falls, east of Pacific House. 1002 Comment
  SD234524  Kickxia elatine G. K. Helmkamp, E. A. Helmkamp 2007-9-19 12987 El Dorado Foothills, northern Sierra Nevada Mountains: junction of Lost Creek Road and French Creek Road just north of Frenchtown. 366 Comment
  SD234947  Astragalus bolanderi G. K. Helmkamp, E. A. Helmkamp 2007-8-4 12713 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail aat Leek Spring meadow, about 2 miles northwest of CA-88. 2238 Comment
  SD235008  Potentilla glandulosa subsp. ashlandica G. K. Helmkamp, E. A Helmkamp 2007-6-8 12287 El Dorado Northern Sierra Nevada Mountains: Bonetti Road, 1.9 miles south of Mormon Emigrant Trail, at the bridge over Diamond Creek (Sly Park 7.5' Q) 1143 Comment
  SD236150  Panicum dichotomiflorum G. K. Helmkamp, Elizabeth Helmkamp 2005-9-1 9834 El Dorado Northern Sierra Nevada Foothills: E of Sacramento; Sand Canyon Road, 0.3 mi E of CA Highway 49 and Logtown Ridge 280 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
  SD237264  Dactylis glomerata G. K. Helmkamp, E. A. Helmkamp 2008-6-5 13606 El Dorado Sierra Nevada Mountains Foothills: Forbay Road. .5 mile north of its crossing if the South Fork American River. 668 Comment
  SD237315  Erigeron lassenianus G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15272 El Dorado Sierra Nevada Mountains: Wrights Lake Road, 1.2 miles south of Wrights Lake. 2073 Comment
  SD237413  Cornus nuttallii G. K. Helmkamp, E. A. Helmkamp 2008-5-15 13446 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. 1054 Comment
  SD237431  Lupinus albifrons var. collinus G. K. Helmkamp, E. A. Helmkamp 2008-5-15 13448 El Dorado Sierra Nevada Mountains: White Meadow Road about 1.3 miles west of its junction with Ice House Road. 1134 Comment
  SD237572  Persicaria maculosa G. K. Helmkamp, E. A. Helmkamp 2009-8-8 15413 El Dorado Sierra Nevada Mountains: Forebay Road just south of its crossing of the South Fork, American River (Pollock Pines 7.5'Q) 594 Comment
  SD239744  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2009-4-4 14488 El Dorado Northern Sierra Nevada Mountains Foothills: Happy Valley Cut-off, 0.6 mile southeast of its junction with Mt. Aukum Road, c. 1.8 mi due south of Pleasant Valley (Camino 7.5'Q) 591 Comment
  SD239765  Vicia sativa subsp. nigra G. K. Helmkamp, E. A. Helmkamp 2009-4-4 14511 El Dorado Sierra Nevada Mountains Foothills: San Ridge Road, 7.9 miles (road) SW of bucks Bar Road, c. 6.1 miles (air) SW of Somerset. 545 Comment
  SD240838  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2011-10-13 18408 El Dorado Northern Sierra Nevada Mountains Foothills: Forebay Road, 9.1 miles northwest of Pollock Pines at the south side of the bridge over the South Fork American River (Pollock Pines 7.5'Q) 611 Comment
  SD240925  Hackelia George K Helmkamp, E. A. Helmkamp 2006-7-10 10934 El Dorado Northern Sierra Nevada Mountains: 1.1 miles west of Silver Creek along the road from Ice House Reservoir to Wright's Lake (Kyburz 7.5'Q) 2043 Comment
  SD241028  Vicia disperma George K. Helmkamp, E. A. Helmkamp 2011-6-7 17496 El Dorado Northern Sierra Nevada Mountains Foothills: Lake Oaks Mobile Home Park, Diamond Springs. 529 Comment
  SD241176  Galium bolanderi George K. Helmkamp, E. A. Helmkamp 2011-7-7 17658 A El Dorado Northern Sierra Nevada Mountains: Capps Crossing Road, 5.2 miles south of its junction with Mormon Emigrant Trail (Old Iron Mountain 7.5'Q) 1409 Comment
  SD241179  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2011-9-13 18269 El Dorado Northern Sierra Nevada Mountains: Foster Meadow Road, 0.6 miles north of its junction with CA-88 (Bear River Reservoir 7.5'Q) 2136 Comment
  SD243070  Symphyotrichum spathulatum var. spathulatum George K. Helmkamp, E. A. Helmkamp 2010-9-1 16896 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
  SD243153  Ribes cereum var. cereum George K. Helmkamp, E. A. Helmkamp 2010-8-20 16807 El Dorado Northern Sierra Nevada Mountains: Foster Meadow Road 0.6 mile west of Mormon Emigrant Trail in the Leek Spring area. Open seep area. 2232 Comment
  SD247418  Lupinus apertus George Helmkamp, E. A. Helmkamp 2013-6-19 20940 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
  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
  SD262196  Madia citrigracilis George K Helmkamp, Elizabeth Helmkamp 2013-8-2 22081 A El Dorado Northern Sierra Nevada Mountains: Mehrten Spring Road, 0.5 mile north of CA-88/Carson Pass Hwy (Peddler Hill 7.5'Q) 1793 Comment
  SDSU21021  Cryptantha affinis George K. Helmkamp, Elizabeth Helmkamp 2011-7-30 17911 El Dorado Northern Sierra Nevada Mountains: Omo Ranch Road at the junction with North-South Road, 0.67 mi. NW (300) of jct with Hwy 88; 8.9 miles southeast of Omo Ranch (Caldor 7.5', +/- 100m) Caniferous forest. 1457 Comment
  SEINET11262704  Saxifraga californica George K. Helmkamp, E. A. Helmkamp 2012-4-27 18860 El Dorado Northern Sierra Nevada Mountains Foothills: Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River (Slate Moutain 7.5' Q.).; 0 401 Comment
  SEINET13203108 Image available Cardamine pensylvanica George K. Helmkamp, E. A. Helmkamp 2012-1 18895 El Dorado Northern Sierra Nevada Mountains Foothills: Forebay Road north of Pollock Pines, at the south side of the bridge over the South Fork American River (Slate Mountain 7.5' Q.) 591 Comment
  SEINET1908673  Iris hartwegii subsp. hartwegii G. K. Helmkamp, E. A. Helkamp 2008-1 13438 El Dorado Sierra Nevada Mountains: White Meadow Road, 0.1 mile west of its junction with Ice House Road, c. 1.3 up Ice House Road from US-50 (Riverton 7.5') 1055 Comment
  SEINET2440972  Lotus micranthus George K. Helmkamp, E. A. Helmkamp 2010-5-15 16045 El Dorado Sierra Nevada Mountains Foothills. String Canyon Road, 1.4 mi NE of its junction with Consumnes Mine Road (Sly Park 7.5'). 1109 Comment
  SEINET2441655  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2009-6-3 14884 El Dorado Foothills, northern Sierra Nevada Mountains: Pony Express Trail, 0.7 mile east of its junction with Sly Park Road in Pollock Pines (Pollock Pines 7.5' Q.).; 0 851 Comment
  SEINET2445055  Claytonia parviflora George K. Helmkamp, E. A. Helmkamp 2010-5-17 16053 El Dorado Sierra Nevada Mountains Foothills. Pine Hill Road at the junction with Bertana Court; SE edge of State Ecological Preserve, 1.6 mi NW of Rescue (Shingle springs 7.5'). 459 Comment
  SEINET2473470 Image available Andropogon virginicus var. virginicus George K. Helmkamp, E. A. Helmkamp 2009-1 15689 El Dorado Sierra Nevada Mountains Foothills; Diamond Springs, Lake Oaks Mobile Home Park south of Patterson Dr. and CA-49 520 Comment
  SEINET3238892 Image available Brassica rapa George K. Helmkamp, E. A. Helmkamp 2008-2-9 13129 El Dorado Sierra Nevada Mountains Foothills: along CA-49, 1.9 miles S of El Dorado. 494 Comment
  SEINET3245899  Cirsium vulgare G. K. Helmkamp, E. A. Helmkamp 2007-1 12934 El Dorado Northern Sierra Nevada Mountains: Along Hwy US-50, 0.4 mile southwest of Phillips. 1829 Comment
  SEINET3246035  Heteromeles arbutifolia G. K. Helmkamp, E. A. Helmkamp 2009-1 15657 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 (Placerville 7.5') 567 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
  SEINET3246140  Nicotiana acuminata var. multiflora G. K. Helmkamp, E. A. Helmkamp 2009-1 15664 El Dorado Sierra Nevada Mountains Foothills: Cedar Ravine Road at the junction with Camp Nauvoo Road, 0.1 mile south of Weber Creek and c. 2.5 mi. SE of Placerville. 567 Comment
  SEINET3246225  Kelloggia galioides G. K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-1 13917 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road, 3.4 miles north of its junction with CA Hwy 50. 2043 Comment
  SEINET3282768 Image available Nemophila parviflora var. parviflora George K. Helmkamp, E. A. Helmkamp 2007-4-30 11885 El Dorado Foothills, Northern Sierra Nevada Mountains; hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  SEINET3282786 Image available Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2007-5-1 11916 El Dorado Foothills, Northern Sierra Nevada Mountains; along Hwy CA-49, 6.1 miles northwest of Placerville. 454 Comment
  SEINET3282808 Image available Briza minor George K. Helmkamp, E. A. Helmkamp 2009-5-24 14765 El Dorado Sierra Nevada Mountains Foothills; Sand Ridge Road, 1.3 miles east of the Cosumnes River and CA-49. 381 Comment
  SEINET3411990 Image available Deschampsia danthonioides George K. Helmkamp, E. A. Helmkamp 2006-7-7 10840 El Dorado Northern Sierra Nevada Mtns: Wrights's Lake Road, 3.2 miles N of Hwy US-50, NE of Kyburz 1981 Comment
  SEINET3860251  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 of Kyburz.; 0 2021 Comment
  SEINET3860390  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2010-7-9 16493 El Dorado Northern Sierra Nevada Mountains: Light Canyon Road, 0.1 miles north of its junction with Mormon Emigrant Trail, 20.5 mi. ESE of Placerville.; 0 1831 Comment
  SEINET3860412  Briza minor George K. Helmkamp, E. A. Helmkamp 2010-5-17 16071 El Dorado Sierra Nevada Mountains Foothills: Pine Hill Road, 0.8 miles above the junction with Bertana Court; edge of Pine Hill Ecological Reserve.; 0 610 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
  SEINET4137609 Image available Vicia hirsuta George K. Helmkamp, Laurel Bezdecheck 2010-5-28 16102 El Dorado Sierra Nevada Mountain Foothills: Slug Gulch Road, 4.7 miles E of junction with Perry Creek Road, 3.5 air mi ESE of Fair Play 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
  SEINET4560750  Gnaphalium palustre George K. Helmkamp, E. A. Helmkamp 2011-1 18334 El Dorado Northern Sierra Nevada Mountains; Wentworth Springs Road at the junction with South Creek Road, 4.0 miles north of the Wentworth Springs/Loon Lake junction. 1750 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
  SEINET4691406  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2010-1 16729 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trial, at Jim Quinn Spring. 2136 Comment
  SEINET4691467  Eucephalus breweri George K. Helmkamp, E. A. Helmkamp 2010-1 16714 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trial, at Jim Quinn Spring. 2136 Comment
  SEINET6180066  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2008-6-9 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's Hill 7.5').; 0 1753 Comment
  UC1930968  Madia gracilis G. K. Helmkamp, E. A. Helmkamp 2006-8-24 11269 El Dorado Northern Sierra Nevada Mountains Foothills: Ice House Road, 2.3 miles south of Union Reservoir Road Comment
  UC1930981  Juncus ensifolius G. K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9882 El Dorado Northern Sierra Nevada Foothills: Silver Fork, 2.1 mi west of Kyburz along US Highway 50 Comment
  UC2044607  Penstemon laetus var. laetus George K. Helmkamp with E. A. Helmkamp 2011-7-7 17629 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. (Pollock Pines 7.5' Q.) Comment
  UCD100186  Calandrinia ciliata G. K. Helmkamp; E. A. Helmkamp 2007-3-22 11680 El Dorado Northern Sierra Nevada Mountains. Along Hwy CA-16 at the west slope of Mt. Aukum and 1.7 miles north of Mt. Aukum village. 584 Comment
  UCD100198  Eriogonum incanum G. K. Helmkamp; E. A. Helmkamp 2007-8-21 12795 El Dorado Northern Sierra Nevada Mountains; Ice House Road, 0.2 mile south of the north spillway of Loon Lake. 1966 Comment
  UCD100883  Eriogonum roseum G. K. Helmkamp; E. A. Helmkamp 2007-9-1 12858 El Dorado 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
  UCD102712  Lithophragma bolanderi G. K. Helmkamp; Elizabeth Helmkamp 2006-5-31 10565 El Dorado Northern Sierra Neveda Foothills: Along Hwy US-50, 7.2 miles east of Ice House Canyon Road. 1162 Comment
  UCD104010  Clarkia affinis G. K. Helmkamp; E. A. Helmkamp 2007-5-1 11918 El Dorado Northern Sierra Nevada Mountains: along Hwy CA-49. 6.1 miles northwest of Placerville. 454 Comment
  UCD105310  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-8-21 12808 El Dorado Northern Sierra Nevada Mountains. Ice House Road, 1.7 miles S of its upper junction with Wentworth Springs Road. 1619 Comment
  UCD105677  Cytisus scoparius G. K. Helmkamp; Elizabeth Helmkamp 2006-5-20 10503 El Dorado Northern Sierra Nevada Foothills: ca. 5 air mi off CA Hwy 193, E of Georgetown; 1.7 mi. N of Wentworth Springs Road on Bottlehill Road (junction just E of Balderson Station). 972 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
  UCD106026  Lupinus albifrons var. albifrons G. K. Helmkamp; E. A. Helmkamp 2006-3-26 10108 El Dorado Northern Sierra Neveda Foothills: ENE of Sacramento; Rock Creek Road, 1.4 mi E of CA Highway 193 (generally E of Chili Bar). 428 Comment
  UCD106028  Lupinus albifrons var. albifrons G. K. Helmkamp; Elizabeth A. Helmkamp 2006-5-31 10574 El Dorado Northern Sierra Neveda Mountains, Wright's Lake Road just north of Hwy. US-50. 1665 Comment
  UCD108377  Trifolium depauperatum var. depauperatum G. K. Helmkamp; E. A. Helmkamp 2007-3-22 11673 El Dorado Northern Sierra Nevada Mountains. Along Hwy CA-16 at the west slope of Mt. Aukum and 1.7 miles north of Mt. Aukum village. 584 Comment
  UCD108397  Lupinus lepidus var. confertus G. K. Helmkamp 2007-7-7 12465 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.9 mile west of Luther Pass in the Grass Lake area. 2338 Comment
  UCD109064  Lupinus nanus G. K. Helmkamp; E. A. Helmkamp 2007-3-23 11694 El Dorado Northern Sierra Nevada Mountains: hills bordering the east end of Sacramento Valley. Salmon Falls Road, 4.6 miles north of Green Valley Road, above NE arm of Folsom Lake. 384 Comment
  UCD109451  Lupinus polyphyllus var. burkei G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10988 El Dorado Northern Sierra Nevada Mountains; Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2104 Comment
  UCD109458  Lupinus polyphyllus var. burkei G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12709 El Dorado Northern Sierra Nevada Mountains. Along Mormon Emigeant Trail at Leek Spring meadow, about 2 miles northwest of CA-88. 2237 Comment
  UCD111169  Viola purpurea subsp. integrifolia G. K. Helmkamp; E. A. Helmkamp, Amy Barnes 2007-6-20 12374 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail, 17.2 miles ESE of its junction with Sly Park Road at Jenkinson Lake. 2127 Comment
  UCD111291  Trifolium longipes subsp. hansenii G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10865 El Dorado Northern Sierra Nevada Mtns.: Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz. 2049 Comment
  UCD111296  Trifolium longipes subsp. hansenii G. K. Helmkamp 2007-6-29 12445 El Dorado Northern Sierra Nevada Mountains: Kirkwood Lake, about 0.5 mile north of CA-88 on the road to the campground. 2351 Comment
  UCD112221  Ceanothus leucodermis G. K. Helmkamp; E. A. Helmkamp 2007-3-22 11662 El Dorado Northern Sierra Nevada Mountains: Bucks Bar Road, 4.4 miles south of Pleasant Valley Road at the junction of Sand Ridge road. 628 Comment
  UCD113210  Prunus emarginata G. K. Helmkamp; E. A. Helmkamp 2007-5-9 11971 El Dorado Northern Sierra Nevada Mountains; Granite Springs Road 0.4 mile east of its junction with Ice House Road, junction about 4 miles southwest of Ice House. 1707 Comment
  UCD113571  Horkelia tridentata var. tridentata G. K. Helmkamp; E. A. Helmkamp 2006-5-20 10515 El Dorado Northern Sierra Nevada: ca. 5 air mi off CA Hwy 193, E of Georgetown; 1.7 mi. N of Wentworth Springs Road on Bottlehill Road (junction just E of Balderson Station). Comment
  UCD114276  Barbarea orthoceras G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-10 10665 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 6.1 miles north of Hwy US-50. 1653 Comment
  UCD116657  Sidalcea glaucescens G. K. Helmkamp; E. A. Helmkamp 2006-8-24 11284 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.8 miles north of Wentworth Springs Road. 1616 Comment
  UCD118182  Collomia heterophylla G. K. Helmkamp; Elizabeth Helmkamp 2006-5-24 10550 El Dorado Northern Sierra Nevada Mountains: Junction of Ice House Canyon Road and West Meadows Road (SSW of Union Valley Reservior, just N of Hwy 50). 1067 Comment
  UCD119580  Nemophila maculata G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-10 10671 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 6.1 miles north of Hwy US-50. 1653 Comment
  UCD120029  Nemophila heterophylla G. K. Helmkamp; E. A. Helmkamp 2007-4-27 11865 El Dorado Northern Sierra Nevada Mountains: junction of Ice House Road and White Meadows Road, about 2 miles northwest of US-50. 1029 Comment
  UCD122665  Mimulus guttatus G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10987 El Dorado Northern Sierra Nevada Mountains: Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2104 Comment
  UCD122675  Mimulus guttatus G. K. Helmkamp; E. A. Helmkamp 2007-8-21 12783 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 21.3 miles north of CA-50 at Robbs Hut Road. 2077 Comment
  UCD123164  Cordylanthus tenuis subsp. tenuis G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11157 El Dorado Northern Sierra Nevada Mountains; Mormon Emigrant Trail, 16.7 miles east of its junction with Sly Park Road. 1944 Comment
  UCD123637  Collinsia parviflora G. K. Helmkamp; E. A. Helmkamp 2006-8-3 10994 El Dorado Northern Sierra Nevada Mountains: Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2103 Comment
  UCD124159  Penstemon roezlii G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11154 El Dorado Northern Sierra Nevada Mtns: Mormon Emigrant Trail, 16.7 miles east of its junction with Sly Park Road. 1944 Comment
  UCD124901  Veronica serpyllifolia subsp. humifusa G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-10 10698 El Dorado Northern Sierra Nevada Mountains; Ice House Road at the turnoff to Loon Lake. 1982 Comment
  UCD125213  Monardella odoratissima subsp. pallida G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10961 El Dorado Northern Sierra Nevada Mountains; Mount Ralston Trail and Highway US-50, about 0.9 mile south of Twin Bridges. 1960 Comment
  UCD127553  Ligusticum grayi G. K. Helmkamp 2007-6-29 12422 El Dorado Northern Sierra Nevada Mountains: Tragedy Spring, just north of CA-88. 2421 Comment
  UCD128840  Anaphalis margaritacea G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11018 El Dorado Northern Sierra Nevada Mountains: North Truckee River Road, 1.4 miles north of CA-50 and around 6 miles south of Lake Tahoe. 2009 Comment
  UCD129289  Artemisia douglasiana G. K. Helmkamp; E. A. Helmkamp 2007-9-26 13020 El Dorado Northern Sierra Nevada Mountains: junction of Bonetti Road and Mormon Emigrant Trail, 2.3 miles east of Jenkinson Lake. 1226 Comment
  UCD131957  Erigeron glacialis var. glacialis G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10990 El Dorado Northern Sierra Nevada Mountains; Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2104 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
  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
  UCD135119  Pseudotsuga menziesii var. menziesii G. K. Helmkamp; E. A. Helmkamp 2007-2-24 11590 El Dorado Northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Pleasant Valley Road and Patterson Dr., east end of Diamond Springs. 536 Comment
  UCD135574  Senecio integerrimus var. major G. K. Helmkamp; E. A. Helmkamp 2006-6-10 10684 El Dorado Northern Sierra Nevada Mountains: along Ice House Road, 10.6 miles south of Wentworth Springs Road (just south of the Jones Fork of Silver Creek). 1509 Comment
  UCD136498  Symphyotrichum foliaceum G. K. Helmkamp; E. A. Helmkamp 2006-9-12 11372 El Dorado Northern Sierra Nevada Mountains: Along Hwy. CA-89, 1.2 miles west of the Alpine County line. General area of Luther Pass and Grass Lake. 2363 Comment
  UCD136997  Polypodium calirhiza G. K. Helmkamp; Elizabeth Helmkamp 2006-5-20 10495 El Dorado Northern Sierra Nevada: Along CA Highway 193, 0.4 mi. S of Kelsey. 604 Comment
  UCD137194  Adiantum jordanii G. K. Helmkamp; E. A. Helmkamp 2006-6-7 10645 El Dorado Foothills, Northern Sierra Nevada Mountains: hiking trail, 3.4 miles northwest of Placerville along Hwy CA-49. 512 Comment
  UCD137252  Sambucus racemosa var. racemosa G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11196 El Dorado Northern Sierra Nevada Mountains. Tragedy Spring; Tragedy Spring Road, 0.3 mile north of Hwy CA-88. 2424 Comment
  UCD137705  Isotoma fluviatilis G. K. Helmkamp; E. A. Helmkamp 2007-5-11 11992 El Dorado Northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Diamond Springs. 524 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
  UCD140444  Carex hoodii G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10985 El Dorado Northern Sierra Nevada Mtns: Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2104 Comment
  UCD141507  Juncus effusus subsp. pacificus G. K. Helmkamp; E. A. Helmkamp 2005-9-23 9908 El Dorado Northern Sierra Nevada Foothills. Wright's Lake Road (Forest Road 4) 2.1 road miles North of US Highway 50 (around 5-6 miles east of Kyburz). 1854 Comment
  UCD55750  Arctostaphylos viscida subsp. viscida G. K. Helmkamp; E. A. Helmkamp 2006-3-26 10110 El Dorado Northern Sierra Neveda Foothills, ENE of Sacramento, Rock Creek Road, 1.4 mi E of CA Highway 193 (generally E of Chili Bar). 428 Comment
  UCD60416  Cerastium glomeratum G. K. Helmkamp; E. A. Helmkamp 2007-5-9 11983 El Dorado Northern Sierra Nevada Mountains: White Meadow Road, 0.6 mile west of its junction with Ice House Road, c. 0.75 NNW of Riverton. 329 Comment
  UCD60417  Nemophila parviflora var. austiniae G. K. Helmkamp; E. A. Helmkamp 2007-5-9 11985 El Dorado Northern Sierra Nevada Mountains: White Meadow Road, 0.6 mile west of its junction with Ice House Road, c. 0.75 mi. NNW of Riverton. 1082 Comment
  UCD61807  Bromus hordeaceus G. K. Helmkamp; E. A. Helmkamp 2007-4-30 11890 El Dorado Northern Sierra Nevada Mountains: hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  UCD61808  Avena fatua G. K. Helmkamp; E. A. Helmkamp 2007-5-5 11935 El Dorado Northern Sierra Nevada Mountains: hiking trail leaving from CA-49, 3.7 miles northwest of Placerville. 549 Comment
  UCD61809  Briza minor G. K. Helmkamp; E. A. Helmkamp 2007-5-11 11989 El Dorado Northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Diamond Springs. 524 Comment
  UCD62735  Elymus trachycaulus subsp. subsecundus G. K. Helmkamp; E. A. Helmpkamp 2006-9-12 11379 El Dorado Northern Sierra Nevada Mountains: Along Hwy CA-89, 1.2 miles west of the Alpine County line. General area of Luther Pass and Grass Lake. 2362 Comment
  UCD63236  Quercus kelloggii G. K. Helmkamp; E. A. Helmkamp 2006-10-26 11575 El Dorado Northern Sierra Nevada Mountains Foothills: Oak Hill Drive 1.3 miles south of Pleasant Valley Road at Tiger Lily. 671 Comment
  UCD63237  Quercus lobata G. K. Helmkamp; E. A. Helmkamp 2006-10-26 11576 El Dorado Northern Sierra Nevada Mountains Foothills: Oak Hill Drive 1.3 miles south of Pleasant Valley Road at Tiger Lily. 671 Comment
  UCD86228  Hordeum murinum subsp. leporinum G. K. Helmkamp; E. A. Helmkamp 2007-5-5 11936 El Dorado Northern Sierra Nevada Mountains: along CA-49, 3.7 miles NW of Placerville. 549 Comment
  UCD95662  Delphinium gracilentum G. K. Helmkamp; E. A. Helmkamp 2006-7-31 11059 El Dorado Northern Sierra Nevada Mountains. Along Wright's Lake Road (Forestry Route 4) at Lyons Creek, 3.3 miles north of Hwy. U.S.--50. 2048 Comment
  UCD96137  Delphinium nuttallianum G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10891 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
  UCD99399  Stellaria media G. K. Helmkamp; Elizabeth Helmkamp 2006-4-25 10222 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
  UCR170194  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9905 El Dorado Northern Sierra Nevada Foothills, Wright's Lake Road (Forest Road 4) 2.1 road miles N of US Highway 50 (c. 5-6 mi east of Kyburz) 1854 Comment
  UCR170228  Gilia leptalea subsp. leptalea George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9911 El Dorado Northern Sierra Nevada Foothills, Wright's Lake Road (Forest Road 4) c. 4.0 road miles north of US-50, NE of Kyburz 2061 Comment
  UCR170231  Ribes nevadense George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9927 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
  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
  UCR170238  Symphyotrichum George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9915 El Dorado Northern Sierra Nevada Foothills, Wright's Lake Road (Forest Road 4) c. 4.0 road miles north of US-50, NE of Kyburz 2061 Comment
  UCR170322  Gnaphalium canescens subsp. beneolens George K. Helmkamp, Elizabeth Helmkamp 2005-11-15 10036 El Dorado Northern Sierra Nevada Foothills, [E of Sacramento, N of Union Valley Reservoir]; Wentworth Springs Road, 5.9 [road] mi east of Uncle Toms Cabin 1567 Comment
  UCR170332  Equisetum hyemale subsp. affine George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9883 El Dorado Northern Sierra Nevada Foothills, Silver Fork, 2.1 mi west of Kyburz along US Highway 50 1220 Comment
  UCR170351  Epilobium canum subsp. latifolium George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9899 El Dorado Northern Sierra Nevada Foothills, Wright's Lake Road (Forest Road 4) 2.1 road miles N of US Highway 50 (c. 5-6 mi east of Kyburz) 1854 Comment
  UCR170356  Chrysanthemum leucanthemum George K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9856 El Dorado Northern Sierra Nevada Foothills, east of Sacramento; Sly Park Road (County Highway E-16), c. 2 mi east of Pleasant Valley 854 Comment
  UCR170358  Lessingia leptoclada George K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9854 El Dorado Northern Sierra Nevada Foothills, east of Sacramento; Sly Park Road (County Highway E-16), c. 2 mi east of Pleasant Valley 854 Comment
  UCR170423  Plantago lanceolata George K. Helmkamp, Elizabeth Helmkamp 2005-11-15 10019 El Dorado Northern Sierra Nevada Foothills, [E of Sacramento, c. 3 air mi NNW of Placerville]; South Fork of American River on the west side of Calif. Highway 193 291 Comment
  UCR170427  Nerium oleander George K. Helmkamp, Elizabeth Helmkamp 2005-11-15 10032 El Dorado Northern Sierra Nevada Foothills, [E of Sacramento, c. 3 air mi NNW of Placerville]; South Fork of American River on the west side of Calif. Highway 193 291 Comment
  UCR170433  Quercus chrysolepis George K. Helmkamp, Elizabeth Helmkamp 2005-10-29 10012 El Dorado Northern Sierra Nevada Foothills, [E of Sacramento; c. 5 air mi NNE of Placerville], 5.1 [road] mi east of Calif. Highway 193 along Rock Creek Road 451 Comment
  UCR170437  Quercus kelloggii George K. Helmkamp, Elizabeth Helmkamp 2005-10-29 10014 El Dorado Northern Sierra Nevada Foothills, [E of Sacramento; c. 5 air mi NNE of Placerville], 5.1 [road] mi east of Calif. Highway 193 along Rock Creek Road 451 Comment
  UCR170633  Penstemon laetus subsp. laetus George K. Helmkamp, E. A. Helmkamp 2005-8-9 9806 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
  UCR170637  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2005-8-9 9802 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
  UCR170640  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 2005-8-9 9798 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
  UCR170644  Lotus oblongifolius George K. Helmkamp, E. A. Helmkamp 2005-8-9 9793 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
  UCR170655  Gayophytum heterozygum George K. Helmkamp, E. A. Helmkamp 2005-8-9 9768 El Dorado Northern Sierra Nevada Foothills., WSW of Lake Tahoe; Union Reservoir along Ice House Road; boat ramp and loading area 1476 Comment
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May 18 2007
  UCR171059  Daucus carota George K. Helmkamp, E. A. Helmkamp 2005-7-31 9744 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
  UCR171115  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2006-3-26 10106 El Dorado Northern Sierra Nevada Foothills, ENE of Sacramento; Rock Creek Road, 0.9 mi east of Calif. Highway 193 396 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
  UCR171205  Arctostaphylos mariposa George K. Helmkamp, E. A. Helmkamp 2006-3-17 10076 El Dorado Central Sierra Nevada Foothills, Forni Road between Calif. Highway 50 and Diamond Springs at Weber Creek 488 Comment
  UCR171227  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2005-7-31 9736 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
  UCR171233  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2005-7-11 9705 El Dorado Northern Sierra Nevada Foothills, Pollock Pines area just south of US Highway 50 along County Road #5 1159 Comment
  UCR171240  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2005-7-11 9693 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
  UCR171244  Polygonum argyrocoleon George K. Helmkamp, E. A. Helmkamp 2005-7-11 9697 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
  UCR171255  Clarkia rhomboidea George K. Helmkamp, E. A. Helmkamp 2005-7-11 9683 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
  UCR171325  Coreopsis tinctoria George K. Helmkamp, E. A. Helmkamp 2005-7-11 9680 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
  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
  UCR171621  Hypericum perforatum George K. Helmkamp, E. A. Helmkamp 2005-7-11 9689 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
  UCR172661  Arctostaphylos viscida subsp. viscida George K. Helmkamp, Elizabeth Helmkamp 2006-4-13 10186 El Dorado Northern Sierra Nevada Foothills, El Dorado National Forest, along Volcanoville Road, 7.7 mi N of Wentworth Springs road (NE of Georgetown) 915 Comment
  UCR172666  Ceanothus cuneatus subsp. cuneatus George K. Helmkamp, Elizabeth Helmkamp 2006-4-13 10182 El Dorado Northern Sierra Nevada Foothills, El Dorado National Forest, Along Calif. Hwy 193, just N of Kelsey, south of Gopher Hill 610 Comment
  UCR172668  Ranunculus californicus George K. Helmkamp, Elizabeth Helmkamp 2006-4-13 10180 El Dorado Northern Sierra Nevada Foothills, El Dorado National Forest, Along Calif. Hwy 193, just N of Kelsey, south of Gopher Hill 610 Comment
  UCR173305  Eriophyllum lanatum George K. Helmkamp, Elizabeth Helmkamp 2006-5-18 10471 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
  UCR173323  Tragopogon dubius George K. Helmkamp, Elizabeth Helmkamp 2006-5-20 10483 El Dorado Northern Sierra Nevada foothills, along Calif. Hwy 49 between Diamond Springs and Placerville; 0.4 mi. N of Weber Creek 549 Comment
  UCR173327  Aesculus californica George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10254 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
  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
  UCR173337  Vicia sativa subsp. nigra George K. Helmkamp, Elizabeth Helmkamp 2006-4-27 10234 El Dorado Northern Sierra Nevada Foothills, Junction of French Creek Road and Big Canyon Road, 0.5 mi. south of Frenchtown 340 Comment
  UCR173446  Prunus emarginata George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10545 El Dorado Northern Sierra Nevada Mountains, El Dorado National Forest; south of Union Valley Reservoir, c. 2 air mi. N of US Hwy 50; junction of Ice House Canyon Road and Granite Springs Road 1610 Comment
  UCR173656  Linanthus bicolor George K. Helmkamp, Elizabeth Helmkamp 2006-5-1 10285 El Dorado Northern Sierra Nevada foothills, corner of Pleasant Valley Road and Patterson Drive; west end of Diamond Springs 537 Comment
  UCR173701  Agoseris retrorsa George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10569 El Dorado Northern Sierra Nevada foothills, along Hwy US-50, 7.2 miles east of Ice House Canyon Road 1162 Comment
  UCR173706  Rumex acetosella George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10580 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road just north of Hwy US-50 1665 Comment
  UCR173708  Erysimum cheiranthoides George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-10 10697 El Dorado Northern Sierra Nevada Mountains, Ice House Road at the turnoff to Loon Lake 1982 Comment
  UCR173719  Chamaebatia foliolosa George K. Helmkamp, Elizabeth Helmkamp 2006-5-20 10513 El Dorado Northern Sierra Nevada Foothills, c. 5 air mi off Calif. Hwy 193, east of Georgetown; 1.7 mi. N of Wentworth Springs Road on Bottlehill Road (junction just east of Balderson Station) 973 Comment
  UCR173722  Nemophila heterophylla George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10567 El Dorado Northern Sierra Nevada foothills, along Hwy US-50, 7.2 miles east of Ice House Canyon Road 1162 Comment
  UCR173732  Calochortus minimus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-10 10701 El Dorado Northern Sierra Nevada Mountains, Ice House Road at the turnoff to Loon Lake 1982 Comment
  UCR173809  Calochortus albus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10626 El Dorado Northern Sierra Nevada foothills, Rock Creek Road at Dark Canyon, 1.4 miles east of the junction with Calif. Hwy 193 381 Comment
  UCR173811  Sanicula crassicaulis George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10628 El Dorado Northern Sierra Nevada foothills, Rock Creek Road at Dark Canyon, 1.4 miles east of the junction with Calif. Hwy 193 381 Comment
  UCR173816  Linanthus ciliatus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10636 El Dorado Northern Sierra Nevada foothills, Rock Creek Road at the crossing over Rock Creek, 6.8 miles east of the junction with Calif. Hwy 193 412 Comment
  UCR173818  Bromus anomalus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10633 El Dorado Northern Sierra Nevada foothills, Rock Creek Road, about 2.2 miles east of its junction with Calif. Hwy 193 424 Comment
  UCR173903  Mimulus guttatus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10616 El Dorado Northern Sierra Nevada foothills, along Rock Creek Road, 0.1 mile east of its junction with Calif. Hwy 193 387 Comment
  UCR173907  Arctostaphylos manzanita subsp. manzanita George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10772 El Dorado Northern Sierra Nevada Mountains, about 1.3 miles north of Hwy US-50 on Wrights Lake Road 1677 Comment
  UCR173925  Polypogon monspeliensis George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10617 El Dorado Northern Sierra Nevada foothills, along Rock Creek Road, 0.1 mile east of its junction with Calif. Hwy 193 387 Comment
  UCR173953  Prunus emarginata George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10763 El Dorado Northern Sierra Nevada Mountains, 2 miles west of Wright's Lake at the junction with Wright's Lake Road (6 miles north of Hwy US-50) 2003 Comment
  UCR173957  Ribes nevadense George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10736 El Dorado Northern Sierra Nevada Mountains, 5.5 miles east of Ice House Road on the road to Wright's Lake 1860 Comment
  UCR174205  Astragalus bolanderi George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10764 El Dorado Northern Sierra Nevada Mountains, 2 miles west of Wright's Lake at the junction with Wright's Lake Road (6 miles north of Hwy US-50) 2003 Comment
  UCR175280  Briza minor George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10638 A El Dorado Northern Sierra Nevada foothills, Rock Creek Road at the crossing over Rock Creek, 6.8 miles east of the junction with Calif. Hwy 193 412 Comment
  UCR175715  Poa bolanderi George K. Helmkamp, E. A. Helmkamp 2006-7-7 10872 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176020  Spergularia rubra George K. Helmkamp, E. A. Helmkamp 2006-7-12 10981 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR176024  Potentilla gracilis var. fastigiata George K. Helmkamp, E. A. Helmkamp 2006-7-28 11035 El Dorado Northern Sierra Nevada Mtns, 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd 2226 Comment
  UCR176030  Epilobium angustifolium George K. Helmkamp, E. A. Helmkamp 2006-7-7 10975 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR176034  Ipomopsis aggregata subsp. formosissima George K. Helmkamp, E. A. Helmkamp 2006-7-12 10971 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR176043  Allium validum George K. Helmkamp, E. A. Helmkamp 2006-7-28 11005 El Dorado Northern Sierra Nevada Mtns, Echo Summit along Hwy US-50; at entrance to the road maintenance station 2245 Comment
  UCR176047  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 2006-7-28 11009 El Dorado Northern Sierra Nevada Mtns, Echo Summit along Hwy US-50; at entrance to the road maintenance station 2245 Comment
  UCR176295  Allophyllum divaricatum George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10250 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
  UCR176363  Triteleia ixioides subsp. anilina George K. Helmkamp, E. A. Helmkamp 2006-7-10 10899 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
  UCR176367  Lupinus lepidus var. confertus George K. Helmkamp, E. A. Helmkamp 2006-7-12 10951 El Dorado Northern Sierra Nevada Mtns, Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges 1960 Comment
  UCR176373  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2006-7-12 10989 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR176377  Geranium californicum George K. Helmkamp, E. A. Helmkamp 2006-7-12 10996 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR176383  Symphoricarpos mollis George K. Helmkamp, E. A. Helmkamp 2006-7-12 10960 El Dorado Northern Sierra Nevada Mtns, Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges 1960 Comment
  UCR176387  Ranunculus alismifolius var. alismifolius George K. Helmkamp, E. A. Helmkamp 2006-7-7 10858 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176393  Phacelia hastata var. hastata George K. Helmkamp, E. A. Helmkamp 2006-8-7 11174 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road 2250 Comment
  UCR176397  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2006-8-7 11170 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road 2250 Comment
  UCR176410  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2006-8-7 11155 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 16.7 miles east of its junction with Sly Park Road 1944 Comment
  UCR176414  Ligusticum grayi George K. Helmkamp, E. A. Helmkamp 2006-7-31 11069 El Dorado Northern Sierra Nevada Mountains, along Wright's Lake Road (Forestry Route 4) at Lyons Creek, about 4 miles north of Hwy US-50 1864 Comment
  UCR176462  Allium campanulatum George K. Helmkamp, E. A. Helmkamp 2006-7-31 11078 El Dorado Northern Sierra Nevada Mountains, along Wright's Lake Road (Forestry Route 4) at Lyons Creek, about 4 miles north of Hwy US-50 1864 Comment
  UCR176472  Perideridia parishii subsp. latifolia George K. Helmkamp, E. A. Helmkamp 2006-8-7 11185 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road 2250 Comment
  UCR177010  Rhamnus californica George K. Helmkamp, E. A. Helmkamp 2005-7-31 9750 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
  UCR177866  Hypericum anagalloides George K. Helmkamp, E. A. Helmkamp 2006-7-31 11077 El Dorado Northern Sierra Nevada Mountains, along Wright's Lake Road (Forestry Route 4) at Lyons Creek, about 4 miles north of Hwy US-50 1864 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
  UCR178659  Gayophytum heterozygum George K. Helmkamp, E. A. Helmkamp 2006-9-7 11337 El Dorado Northern Sierra Nevada Mountains, Ice House Road about 5.5 miles north of US-50 1637 Comment
  UCR178663  Streptanthus tortuosus var. tortuosus George K. Helmkamp, E. A. Helmkamp 2006-9-7 11344 El Dorado Northern Sierra Nevada Mountains, Ice House Road at the junction to lower Loon Lake campground 1966 Comment
  UCR178759  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2006-9-20 11410 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Ice House Road [at Riverton] and US-50 east of Pacific 1000 Comment
  UCR179341  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2006-8-24 11284 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.8 miles north of Wentworth Springs Road 1616 Comment
  UCR179346  Ericameria bloomeri George K. Helmkamp, E. A. Helmkamp 2006-9-12 11365 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
  UCR179348  Allium validum George K. Helmkamp, E. A. Helmkamp 2006-9-12 11378 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
  UCR179558  Gnaphalium palustre George K. Helmkamp, E. A. Helmkamp 2006-8-24 11283 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.8 miles north of Wentworth Springs Road 1616 Comment
  UCR179810  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2006-10-20 11546 El Dorado Northern Sierra Nevada Mountains Foothills, Bucks Bar Road, 3.9 miles south of Pleasant Valley Road, general vicinity of Somerset 625 Comment
  UCR179814  Rorippa curvisiliqua George K. Helmkamp, E. A. Helmkamp 2006-10-20 11553 El Dorado Northern Sierra Nevada Mountains Foothills, 0.6 mile northwest of Pleasant Valley along Pleasant Valley Road 756 Comment
  UCR184370  Pseudotsuga menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2007-2-24 11590 El Dorado Foothills, Northern Sierra Nevada Mountains, Lake Oaks Mobile Home Park, Pleasant Valley Road and Patterson Dr., east end of Diamond Springs 537 Comment
  UCR184374  Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 2007-3-3 11594 El Dorado Northern Sierra Nevada foothills., Cameron Park, junction of Santos Circle & Santos Court 370 Comment
  UCR184803  Equisetum telmateia George K. Helmkamp, E. A. Helmkamp 2007-5-9 11974 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.2 miles north of Ice House, near Jones Place 1515 Comment
  UCR184807  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2007-5-7 11964 El Dorado Foothills, Northern Sierra Nevada Mountains, Pedro Hills Road, 0.5 mile west of its junction with Calif. Hwy 49, junction of roads 5.3 miles south of Cool 311 Comment
  UCR185235  Linanthus bicolor George 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
  UCR185333  Sisyrinchium bellum George K. Helmkamp, E. A. Helmkamp 2007-4-20 11770 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
  UCR185337  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2007-4-20 11768 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
  UCR185340  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2007-4-20 11777 El Dorado Foothills, Northern Sierra Nevada Mountains, along Green Valley Road at junction of Jet Quartz Creek Rd., between Four Corners and Gold Hill 410 Comment
  UCR185344  Gilia tricolor subsp. diffusa George K. Helmkamp, E. A. Helmkamp 2007-4-20 11764 El Dorado Foothills, Northern Sierra Nevada Mountains, 2.2 miles north of US-50 on Bass Lake Road, overlooking Bass Lake; between El Dorado Hills and Cameron Park 384 Comment
  UCR187513  Triphysaria pusilla George K. Helmkamp, E. A. Helmkamp 2007-4-12 11751 El Dorado Foothills, Northern Sierra Nevada Mountains, junction of Pleasant Valley Road and Patterson Drive 537 Comment
  UCR187517  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2007-4-20 11758 El Dorado Foothills, Northern Sierra Nevada Mountains, junction of French Creek Road and Lost Creek road just north of Frenchtown 366 Comment
  UCR188013  Clarkia affinis George K. Helmkamp, E. A. Helmkamp 2007-5-1 11918 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-49, 6.1 miles northwest of Placerville 454 Comment
  UCR188017  Rubus discolor George K. Helmkamp, E. A. Helmkamp 2007-5-1 11922 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-49, 6.1 miles northwest of Placerville 454 Comment
  UCR188164  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2007-4-30 11881 El Dorado Foothills, Northern Sierra Nevada Mountains, hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  UCR188170  Silene californica George K. Helmkamp, E. A. Helmkamp 2007-4-30 11896 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
  UCR188221  Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2007-5-1 11916 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-49, 6.1 miles northwest of Placerville 454 Comment
  UCR188236  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2007-4-29 11872 El Dorado Foothills, Northern Sierra Nevada Mountains, Lake Oaks mobile home park, Diamond Springs 524 Comment
  UCR188238  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2007-4-27 11865 El Dorado Foothills, Northern Sierra Nevada Mountains, junction of Ice House Road and White Meadows Road, about 2 miles northwest of US-50 1029 Comment
  UCR188440  Ranunculus occidentalis George 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
  UCR188444  Arabidopsis thaliana George K. Helmkamp, E. A. Helmkamp 2007-4-27 11868 El Dorado Foothills, Northern Sierra Nevada Mountains, junction of Ice House Road and White Meadows Road, about 2 miles northwest of US-50 1029 Comment
  UCR188558  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2007-9-26 13020 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Bonetti Road and Mormon Emigrant Trail, 2.3 miles east of Jenkinson Lake 1226 Comment
  UCR189217  Nemophila spatulata George K. Helmkamp, Elizabeth Helmkamp 2007-6-20 12406 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
  UCR189296  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2007-9-11 12935 A El Dorado Northern Sierra Nevada Mountains, along Hwy US-50 at Echo Summit 2256 Comment
  UCR189298  Agrostis pallens George K. Helmkamp, E. A. Helmkamp 2007-9-11 12923 El Dorado Northern Sierra Nevada Mountains, along Hwy US-50, 0.4 mile southwest of Phillips 1829 Comment
  UCR189473  Rumex salicifolius var. triangulivalvis George K. Helmkamp, E. A. Helmkamp 2007-8-4 12708 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail at Leek Spring meadow, about 2 miles northwest of CA-88 2238 Comment
  UCR189477  Trifolium depauperatum var. truncatum George K. Helmkamp, E. A. Helmkamp 2007-3-22 11673 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-16 at the west slope of Mt. Aukum and 1.7 miles north of Mt. Aukum village 584 Comment
  UCR189493  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2007-3-22 11675 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-16 at the west slope of Mt. Aukum and 1.7 miles north of Mt. Aukum village 584 Comment
  UCR189497  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2007-3-22 11672 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-16 at the west slope of Mt. Aukum and 1.7 miles north of Mt. Aukum village 584 Comment
  UCR189510  Draba verna George K. Helmkamp, E. A. Helmkamp 2007-3-22 11670 El Dorado Foothills, Northern Sierra Nevada Mountains, Mt. Aukum Road at the crossing of the middle fork of Cosumnes river, west of jct of Bucks Bar Road 622 Comment
  UCR189592  Calyptridium umbellatum George K. Helmkamp, Elizabeth Helmkamp, Amy Barnes 2007-6-20 12361 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
  UCR189763  Tragopogon dubius George K. Helmkamp, E. A. Helmkamp 2007-8-9 12720 El Dorado Northern Sierra Nevada Mountains, Wright's Lake; south side of the lake at the entrance to the campground 2131 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
  UCR190138  Madia bolanderi George K. Helmkamp, E. A. Helmkamp 2007-8-21 12780 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 21.3 miles north of CA-50 at Robbs Hut Road 2078 Comment
  UCR190294  Conyza canadensis George K. Helmkamp, E. A. Helmkamp 2007-8-21 12797 El Dorado Northern Sierra Nevada Mountains, Ice House Road 0.2 mile south of the north spillway of Loon Lake 1966 Comment
  UCR190309  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2007-8-21 12804 El Dorado Northern Sierra Nevada Mountains, unnamed lake at the junction of Angel Creek and Gerle Creek, 0.5 mile west of Wentworth Springs Road 1598 Comment
  UCR190311  Mentha spicata var. spicata George K. Helmkamp, E. A. Helmkamp 2007-9-2 12874 El Dorado Northern Sierra Nevada Mountains Foothills, Grizzly Flat Road 5.2 miles ESE of Somerset, just west of Coles Station 957 Comment
  UCR190316  Platanthera dilatata var. leucostachys George K. Helmkamp, E. A. Helmkamp 2007-8-21 12782 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 21.3 miles north of CA-50 at Robbs Hut Road 2078 Comment
  UCR190715  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2007-9-19 12990 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Lost Creek Road and French Creek Road just north of Frenchtown 366 Comment
  UCR191051  Quercus wislizeni var. wislizeni George K. Helmkamp, E. A. Helmkamp 2007-7-23 12570 El Dorado Northern Sierra Nevada Mountains Foothills, Rock Creek road, 7.1 miles east of its junction with CA-193 567 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
  UCR191144  Navarretia George K. Helmkamp, E. A. Helmkamp 2007-6-8 12311 El Dorado Northern Sierra Nevada Mountains, junction of Bonetti Road and Mormon Emigrant Trail [Silver Lake Rd.], east of Jenkinson Lake 1226 Comment
  UCR193515  Mentha X piperita George K. Helmkamp, E. A. Helmkamp 2007-9-10 12920 El Dorado Northern Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; near junction of CA-49 and Patterson Drive 530 Comment
  UCR194690  Pinus jeffreyi George K. Helmkamp, E. A. Helmkamp 2007-5-31 12224 B 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
  UCR194915  Vicia sativa George K. Helmkamp, E. A. Helmkamp 2007-5-27 12155 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
  UCR196862  Trientalis latifolia George K. Helmkamp, E. A. Helmkamp 2008-6-3 13558 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
  UCR196872  Cyperus eragrostis George K. Helmkamp, E. A. Helmkamp 2008-6-5 13603 El Dorado Sierra Nevada Mountains Foothills, Forbay Road at crossing of the South Fork American River 595 Comment
  UCR196882  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2008-5-15 13439 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
  UCR196942  Saxifraga californica George K. Helmkamp, E. A. Helmkamp 2008-6-3 13552 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
  UCR197259  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2008-4-30 13348 El Dorado Sierra Nevada Mountains Foothills, junction of Meadow Brook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR197312  Bromus carinatus George K. Helmkamp, E. A. Helmkamp 2008-7-11 13779 El Dorado Northern Sierra Nevada Mountains, north side of CA-88, 2.1 miles northeast of the junction with Mormon Emigrant Trail 2340 Comment
  UCR197370  Ceanothus prostratus George K. Helmkamp, E. A. Helmkamp 2008-4-28 13339 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail near Old Iron Mountain, 6 miles east of its junction with Sly Park Road 1451 Comment
  UCR197374  Arctostaphylos manzanita subsp. manzanita George K. Helmkamp, E. A. Helmkamp 2008-4-28 13340 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail near Old Iron Mountain, 6 miles east of its junction with Sly Park Road 1451 Comment
  UCR197380  Scleranthus annuus George K. Helmkamp, E. A. Helmkamp 2008-4-25 13329 El Dorado Sierra Nevada Mountains Foothills, along Bear Creek Road 0.4 mile southeast of its junction with Meadow Brook Road, SE of Georgetown 747 Comment
  UCR197512  Phacelia hydrophylloides George K. Helmkamp, E. A. Helmkamp 2008-7-11 13748 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
  UCR197560  Filago gallica George K. Helmkamp, E. A. Helmkamp 2008-5-28 13496 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; Patterson Dr. and CA-49 530 Comment
  UCR197564  Myosotis laxa George K. Helmkamp, E. A. Helmkamp 2008-6-23 13703 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 0.7 mile southeast of Leek Spring 2268 Comment
  UCR197584  Morus alba George K. Helmkamp, E. A. Helmkamp 2008-5-30 13547 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; corner of Patterson Dr. and CA-49 530 Comment
  UCR197594  Calochortus coeruleus George K. Helmkamp, E. A. Helmkamp 2008-6-9 13648 El Dorado Northern Sierra Nevada Mountains, Cat Creek Road, 0.1 mile north of its junction with CA-88, jct. is 4.2 miles east of Cook's Station 1662 Comment
  UCR197613  Hypericum concinnum George K. Helmkamp, E. A. Helmkamp 2008-6-5 13602 El Dorado Sierra Nevada Mountains Foothills, Forbay Road at crossing of the South Fork American River 595 Comment
  UCR197617  Ribes nevadense George K. Helmkamp, E. A. Helmkamp 2008-5-15 13434 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 1.2 miles north of its junction with US-50 1817 Comment
  UCR198422  Ranunculus muricatus George K. Helmkamp, E. A. Helmkamp 2008-4-25 13321 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR198432  Triteleia hyacinthina George K. Helmkamp, E. A. Helmkamp 2008-4-30 13368 El Dorado Sierra Nevada Mountains Foothills, Bear Creek Road and Daffodil Road, 0.6 mile northeast of the junction of Bear Creek and Meadow Brook Road, south of Georgetown 723 Comment
  UCR198544  Agoseris heterophylla George K. Helmkamp, E. A. Helmkamp 2008-4-30 13363 El Dorado Sierra Nevada Mountains Foothills, Bear Creek Road and Daffodil Road, 0.6 mile northeast of the junction of Bear Creek and Meadow Brook Road, south of Georgetown 723 Comment
  UCR198555  Fragaria vesca George K. Helmkamp, E. A. Helmkamp 2008-4-25 13306 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR200852  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2008-9-9 14091 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the creek crossing, 1.6 miles east of CA-193 628 Comment
  UCR200915  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2008-9-9 14084 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
  UCR201912  Chenopodium botrys George K. Helmkamp, E. A. Helmkamp 2008-8-30 14048 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail 2.4 miles northwest of its junction with CA-88 2271 Comment
  UCR202924  Potentilla gracilis var. fastigiata George K. Helmkamp, E. A. Helmkamp 2008-8-8 13964 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
  UCR206067  Lupinus polyphyllus var. burkei George K. Helmkamp, E. A. Helmkamp 2008-8-1 13924 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.3 miles north of its junction with CA-50 2043 Comment
  UCR206073  Aster integrifolius George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13911 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.4 miles north of its junction with CA Hwy 50 2043 Comment
  UCR206077  Cirsium andersonii George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13909 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.4 miles north of its junction with CA Hwy 50 2043 Comment
  UCR206083  Kelloggia galioides George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13917 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.4 miles north of its junction with CA Hwy 50 2043 Comment
  UCR206087  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
  UCR206093  Juncus bufonius George K. Helmkamp, E. A. Helmkamp 2009-6-3 14882 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
  UCR206097  Lotus incanus George K. Helmkamp, E. A. Helmkamp 2009-6-3 14888 El Dorado Sierra Nevada Mountains Foothills, Forbay Road, 3.2 miles northwest of its junction with Pony Express Trail in Pollock Pines 1052 Comment
  UCR206110  Brodiaea elegans subsp. elegans George K. Helmkamp, E. A. Helmkamp 2009-6-3 14897 El Dorado Northern Sierra Nevada Mountains, Forbay Road, 4.7 miles northwest of its junction with Pony Express Trail in Pollock Pines 945 Comment
  UCR206114  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2009-6-3 14885 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
  UCR206343  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2009-5-19 14717 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 0.2 miles west of its junction with Happy Valley Cutoff road 561 Comment
  UCR206389  Phlox gracilis George K. Helmkamp, E. A. Helmkamp 2009-5-19 14719 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 0.2 miles west of its junction with Happy Valley Cutoff road 561 Comment
  UCR206579  Galium parisiense George K. Helmkamp, E. A. Helmkamp 2009-5-24 14790 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road 640 Comment
  UCR206589  Medicago orbicularis George K. Helmkamp, E. A. Helmkamp 2009-5-24 14786 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.3 miles eat of the Cosumnes River and CA-49 521 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
  UCR206742  Aquilegia formosa George K. Helmkamp, E. A. Helmkamp 2009-6-25 15036 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
  UCR206865  Polystichum scopulinum George K. Helmkamp, E. A. Helmkamp 2009-6-25 15047 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
  UCR206885  Polypodium hesperium George K. Helmkamp, E. A. Helmkamp 2009-3-7 14349 El Dorado Northern Sierra Nevada Mtns. Foothills, along Rock Creek Road, 5.4 miles west of Finnon Lake; beside Rock Creek 442 Comment
  UCR207002  Abies magnifica var. magnifica George K. Helmkamp, E. A. Helmkamp 2009-7-2 15087 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR207021  Poa pratensis subsp. pratensis George K. Helmkamp, E. A. Helmkamp 2009-5-26 14807 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 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
  UCR207028  Chenopodium murale George K. Helmkamp, E. A. Helmkamp 2009-5-26 14802 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR207135  Saxifraga californica George K. Helmkamp, E. A. Helmkamp 2009-4-4 14499 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 0.8 mile west of its junction with Happy Valley Cut-off 607 Comment
  UCR207153  Gilia leptalea subsp. leptalea George K. Helmkamp, E. A. Helmkamp 2009-7-22 15267 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 1.2 miles south of Wrights Lake 2073 Comment
  UCR207157  Erigeron lassenianus var. lassenianus George K. Helmkamp, E. A. Helmkamp 2009-7-22 15272 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 1.2 miles south of Wrights Lake 2073 Comment
  UCR207659  Hypochaeris glabra George K. Helmkamp, E. A. Helmkamp 2009-4-21 14524 A 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
  UCR207663  Trifolium ciliolatum George K. Helmkamp, E. A. Helmkamp 2009-4-21 14535 El Dorado Sierra Nevada Mountains Foothills, Rock Creek Road, 4.2 miles west of the bridge over Rock Creek 401 Comment
  UCR208321  Lotus humistratus George K. Helmkamp, E. A. Helmkamp 2009-4-21 14517 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
  UCR208326  Pistacia chinensis George K. Helmkamp, E. A. Helmkamp 2009-4-20 14515 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR208331  Collinsia bartsiifolia var. bartsiifolia George K. Helmkamp, E. A. Helmkamp 2009-4-21 14548 El Dorado Sierra Nevada Mountains Foothills, along CA-193, 1.1 miles south of the South Fork American River at Chili Bar 381 Comment
  UCR208336  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2009-4-21 14554 El Dorado Sierra Nevada Mountains Foothills, along CA-193, 1.1 miles south of the South Fork American River at Chili Bar 381 Comment
  UCR208338  Adiantum jordanii George K. Helmkamp, E. A. Helmkamp 2009-4-21 14552 El Dorado Sierra Nevada Mountains Foothills, along CA-193, 1.1 miles south of the South Fork American River at Chili Bar 381 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
  UCR209568  Daucus carota George K. Helmkamp, E. A. Helmkamp 2009-8-8 15406 El Dorado Sierra Nevada Mountains Foothills, along CA-49, 0.2 mile north of its turn from Pleasant Valley Road in Diamond Springs 561 Comment
  UCR209576  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-8-24 15532 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 8.8 miles east of its junction with CA-49 625 Comment
  UCR209765  Croton setiger George K. Helmkamp, E. A. Helmkamp 2009-8-14 15467 El Dorado Sierra Nevada Mountains Foothills, junction of Sand Ridge Road and Cutaway Lane, 2.0 miles west of Bucks Bar Road 642 Comment
  UCR215912  Castilleja tenuis George K. Helmkamp, E. A. Helmkamp 2009-6-29 15079 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 8.2 miles north of its junction with CA-50, c. 10.5 air miles NE (73 deg. ) of Pollock Pines 1646 Comment
  UCR215984  Epilobium densiflorum George K. Helmkamp, E. A. Helmkamp 2009-7-1 15086 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs, about 0.1 mile south of the junction of Patterson Drive and CA-49 527 Comment
  UCR216043  Monardella sheltonii George K. Helmkamp, E. A. Helmkamp 2009-6-29 15058 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
  UCR216047  Phacelia George K. Helmkamp, E. A. Helmkamp 2009-6-29 15060 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
  UCR216975  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2010-5-14 16023 El Dorado Sierra Nevada Mountains Foothills, along CA-16 (Mt. Aukum Rd.), 1.8 miles northeast of Somerset 567 Comment
  UCR217159  Lotus micranthus George K. Helmkamp, E. A. Helmkamp 2010-5-15 16045 El Dorado Sierra Nevada Mountains Foothills, String Canyon Road, 1.4 miles northeast of its junction with Consumnes Mine Road 1110 Comment
  UCR217256  Eriodictyon californicum George K. Helmkamp, E. A. Helmkamp 2010-5-13 16009 El Dorado Sierra Nevada Mountains Foothills, junction of Bear Rock Road and Bedford Ave., 1.8 miles north of US-50 in Placerville 624 Comment
  UCR217258  Streptanthus tortuosus var. orbiculatus George K. Helmkamp, E. A. Helmkamp 2010-5-14 16025 El Dorado Sierra Nevada Mountains Foothills, along CA-16 (Mt. Aukum Rd.), 1.8 miles northeast of Somerset 567 Comment
  UCR217328  Madia rammii George K. Helmkamp, E. A. Helmkamp 2010-6-14 16286 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.5 miles from its junction with Perry Creek Road, 3.5 air mi. ESE (96 deg. ) of Fair Play 1059 Comment
  UCR217331  Eriodictyon californicum George K. Helmkamp, E. A. Helmkamp 2010-6-14 16283 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.5 miles from its junction with Perry Creek Road, 3.5 air mi. ESE (96 deg. ) of Fair Play 1059 Comment
  UCR217403  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2010-6-14 16293 El Dorado Sierra Nevada Mountains Foothills, Fairplay Road, 0.3 mile west of its junction with Scorpi Lane, 1.15 air mi. NW (293 deg. ) of Fair Play 668 Comment
  UCR217901  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2010-5-22 16095 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
  UCR217906  Cryptantha simulans George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-6 16457 El Dorado Sierra Nevada Mountains, Silver Fork Road, 1.9 miles south of its junction with US-50 in Kyburz 1473 Comment
  UCR217908  Galium aparine George K. Helmkamp, E. A. Helmkamp 2010-5-22 16079 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
  UCR217919  Galium porrigens var. porrigens George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-6 16465 El Dorado Sierra Nevada Mountains, Silver Fork Road, 4.1 miles south of its junction with US-50 in Kyburz 1500 Comment
  UCR217922  Nemophila menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2010-5-22 16098 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
  UCR217932  Sanicula bipinnatifida George K. Helmkamp, Laurel Bezdecheck 2010-5-28 16107 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
  UCR218103  Ligusticum grayi George K. Helmkamp, E. A. Helmkamp 2010-7-23 16619 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
  UCR218107  Viola purpurea George K. Helmkamp, E. A. Helmkamp 2010-7-9 16503 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
  UCR218759  Brodiaea purdyi George K. Helmkamp, Mary Jane Ganibe, Mary Alice Barnes 2010-6-19 16314 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.7 miles from its junction with Perry Creek Road 1082 Comment
  UCR219645  Pseudognaphalium luteoalbum George K. Helmkamp, E. A. Helmkamp 2009-10-23 15708 El Dorado Sierra Nevada Mountains Foothills, Diamond Springs, unnamed dirt road 0.1 mile southeast of the Patterson Lake dam 520 Comment
  UCR219650  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-11-3 15720 El Dorado Sierra Nevada Mountains Foothills, at a bridge on Grizzly Flat Road 8.0 miles east of its junction with Hwy E-16 at Somerset 925 Comment
  UCR219654  Equisetum arvense George K. Helmkamp, E. A. Helmkamp 2009-11-3 15719 El Dorado Sierra Nevada Mountains Foothills, at a bridge on Grizzly Flat Road 8.0 miles east of its junction with Hwy E-16 at Somerset 925 Comment
  UCR222533  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2010-4-17 15880 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  UCR222537  Scandix pecten-veneris George K. Helmkamp, E. A. Helmkamp 2010-4-17 15876 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  UCR222540  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2010-4-17 15885 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  UCR222544  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-4-17 15884 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  UCR228720  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2009-5-24 14797 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road 640 Comment
  UCR229429  Ribes George K. Helmkamp, E. A. Helmkamp 2011-8-11 18025 El Dorado Northern Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 524 Comment
  UCR229588  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2011-7-30 17924 El Dorado Northern Sierra Nevada Mountains, along North-South Road, 1.6 miles north of its junction with Omo Ranch Road, 0.95 mi. NNW (331 deg. ) of Omo Ranch Rd. jct. with Hwy 88 1460 Comment
  UCR230099  Gayophytum heterozygum George K. Helmkamp, E. A. Helmkamp 2010-9-30 16979 El Dorado Northern Sierra Nevada Mountains, southern end of Loon Lake at the Ice House Road entrance to campground 1966 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
  UCR232607  Lapsana communis George K. Helmkamp, E. A. Helmkamp 2011-10-13 18423 El Dorado Northern Sierra Nevada Mountains, Pony Express Trail, 0.9 mile east of Sly Park Road in Pollock Pines 1220 Comment
  UCR233042  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2011-9-24 18320 El Dorado Northern Sierra Nevada Mountains, Loon Lake [Ice House] Road, 2.7 miles NNE of its junction with Wentworth Springs Road 1884 Comment
  UCR233146A  Ribes roezlii var. roezlii George K. Helmkamp, E. A. Helmkamp 2011-9-23 18313 El Dorado Northern Sierra Nevada Mountains, along Ice House Road, 8.6 miles north of its junction with US-50 1613 Comment
  UCR233175B  Madia exigua George K. Helmkamp, E. A. Helmkamp 2011-7-7 17666 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 5.2 miles south of its junction with Mormon Emigrant Trail 1409 Comment
  UCR233286  Aquilegia formosa George K. Helmkamp, E. A. Helmkamp 2010-9-23 16955 El Dorado Northern Sierra Nevada Mountains, Forest Route 31, 3.4 miles north of its junction with Peavine Ridge Road and Round Tent Canyon Road 1463 Comment
  UCR233288  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2010-9-23 16953 El Dorado Northern Sierra Nevada Mountains, Peavine Ridge Road, 2.8 miles west of Ice House Road and at the junction with Forest Route 31 and Round Tent Canyon Road 1581 Comment
  UCR233296  Eriogonum wrightii var. subscaposum George K. Helmkamp, E. A. Helmkamp 2011-9-1 18203 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  UCR233298  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2011-9-1 18201 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 miles south of its junction with US-50 in Kyburz 1280 Comment
  UCR233310  Mimulus jepsonii George K. Helmkamp, E. A. Helmkamp 2011-9-1 18220 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  UCR233314  Juncus effusus var. exiguus George K. Helmkamp, E. A. Helmkamp 2011-9-1 18216 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  UCR233463  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2011-9-1 18206 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  UCR235600  Claytonia parviflora subsp. parviflora George K. Helmkamp, E. A. Helmkamp 2012-4-27 18863 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
  UCR235604  Pentagramma triangularis subsp. triangularis George K. Helmkamp, E. A. Helmkamp 2012-4-27 18857 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
  UCR235704  Bromus diandrus George K. Helmkamp, E. A. Helmkamp 2012-4-27 18871 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
  UCR236921  Lupinus latifolius var. columbianus George K. Helmkamp, E. A. Helmkamp 2012-5-28 19078 El Dorado Northern Sierra Nevada Mountains, 1.1 miles east of the E dam of Jenkinson Lake via Mormon Emigrant Trail, then 0.6 mile SE toward Fleming Meadow (?) on an unnamed road off Bonetti Rd. 1169 Comment
  UCR237000  Vicia americana George K. Helmkamp, E. A. Helmkamp 2012-5-22 19057 El Dorado Northern Sierra Nevada Mountains, Forest Service Road 31 (Peavine Ridge Road), 1.3 miles wet of its junction with Ice House Canyon Road 1582 Comment
  UCR237004  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-5-28 19065 El Dorado Northern Sierra Nevada Mountains, Pebble Canyon Road, 0.6 mile south of its junction with Mormon Emigrant Trail 1555 Comment
  UCR237054  Agoseris heterophylla George K. Helmkamp, E. A. Helmkamp 2012-4-24 18837 El Dorado Northern Sierra Nevada Mountains Foothills, Bear Creek Road, 0.4 mile south of its junction with Meadow Brook Road, 2.5 miles NE (66 deg. ) of Garden Valley 705 Comment
  UCR241261  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2012-10-1 19946 El Dorado Eastern Sacramento Valley, Southeast end of El Dorado Hills; Windfield Way just south of its junction with White Rock Road 168 Comment
  UCR241966  Lycopus americanus George K. Helmkamp, E. A. Helmkamp 2012-9-15 19831 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
  UCR241968  Prunella vulgaris subsp. lanceolata George K. Helmkamp, E. A. Helmkamp 2012-9-15 19830 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
  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
  UCR241988  Juncus effusus var. exiguus George K. Helmkamp, E. A. Helmkamp 2012-9-15 19842 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
  UCR241991  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2012-9-15 19839 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
  UCR242013  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2012-9-17 19852 El Dorado Northern Sierra Nevada Mountains Foothills, along Forebay Road, 4.8 miles north of its junction with Pony Express Road in Pollock Pines 954 Comment
  UCR242017  Cyperus eragrostis George K. Helmkamp, E. A. Helmkamp 2012-9-17 19858 El Dorado Northern Sierra Nevada Mountains Foothills, north of Pollock Pines, along Forebay Road at South Fork American River 564 Comment
  UCR242351  Sambucus racemosa var. microbotrys George K. Helmkamp, E. A. Helmkamp 2010-8-20 16808 El Dorado Northern Sierra Nevada Mountains, Foster Meadow Road 0.6 mile west of Mormon Emigrant Trail in the Leek Spring area 2232 Comment
  UCR242358  Aster integrifolius George K. Helmkamp, E. A. Helmkamp 2010-8-20 16823 El Dorado Northern Sierra Nevada Mountains, junction of Forest Routes 10N98 and 10N39, about 0.1 mile north of Silver Fork Road, 2.4 mi. NW of Hwy 88 2091 Comment
  UCR248399  Rubus laciniatus George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22021 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 7.4 miles east of the junction with Volcanoville Road 1320 Comment
  UCR248530  Melilotus albus George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22034 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 2.1 miles east of Stumpy Meadows Lake, 15.6 km NNE (06 deg. ) of Pollock Pines 1357 Comment
  UCR248534  Gayophytum heterozygum George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22029 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 7.4 miles east of the junction with Volcanoville Road 1320 Comment
  UCR248547  Hypericum perforatum George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22039 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 2.1 miles east of Stumpy Meadows Lake, 15.6 km NNE (06 deg. ) of Pollock Pines 1357 Comment
  UCR249156  Lupinus stiversii George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20876 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR249158  Trifolium microcephalum George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20875 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR249560  Mimulus tilingii George K. Helmkamp, E. A. Helmkamp 2007-6-20 12407 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
  UCR249570  Galium aparine George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20855 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz 1364 Comment
  UCR249574  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20862 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR249613  Hieracium albiflorum George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20843 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz 1364 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
  UCR250160  Collomia grandiflora George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20871 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR250190  Chamaebatia foliolosa George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20872 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR250437  Bromus hordeaceus George K. Helmkamp, Mary Alice Barnes 2013-5-10 20545 El Dorado Northern Sierra Nevada Mtns. Foothills, Volcanoville Road (end of maintained road), 5.1 miles northwest of Bear Foot Road, at site of Volcanoville 960 Comment
  UCR250440  Carex deweyana subsp. leptopoda George K. Helmkamp, Elizabeth Helmkamp 2013-5-22 20650 El Dorado Northern Sierra Nevada Mtns. Foothills, Along E-16 (Mt. Aukum Rd.) at the southwest end of Angustini Reservoir 569 Comment
  UCR250637  Lupinus albifrons var. collinus George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20889 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
  UCR250640  Rumex acetosella George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20887 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
  UCR250705  Chamaebatia foliolosa George K. Helmkamp, Mary Alice Barnes 2013-5-10 20548 El Dorado Northern Sierra Nevada Mtns. Foothills, Volcanoville Road (end of maintained road), 5.1 miles northwest of Bear Foot Road, at site of Volcanoville 960 Comment
  UCR251240  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2012-7-6 19346 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
  UCR251244  Festuca arundinacea George K. Helmkamp, E. A. Helmkamp 2012-7-6 19357 El Dorado Northern Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50 2078 Comment
  UCR251255  Poa secunda George K. Helmkamp, E. A. Helmkamp 2012-7-6 19340 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
  UCR252798  Achnatherum occidentale subsp. pubescens George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22090 El Dorado Northern Sierra Nevada Mountains, Mehrten Spring Road, 0.5 mile north of CA-88/Carson Pass Hwy 1793 Comment
  UCR253060  Perideridia lemmonii George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22079 El Dorado Northern Sierra Nevada Mountains, Mehrten Spring Road, 0.5 mile north of CA-88/Carson Pass Hwy 1793 Comment
  UCR253113  Stipa occidentalis var. pubescens George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22054 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.1 miles north of Ice House Resort, 0.18 mi. north of Jones Fork Power House Rd., 1.2 mi. NW of Ice House Reservoir 1537 Comment
  UCR253117  Pseudotsuga menziesii var. menziesii George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22067 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 5.2 miles west of its junction with Ice House Road, c. 9 km NW (344 deg. airline) of Union Valley Reservoir 1665 Comment
  UCR253619  Cyperus eragrostis George K. Helmkamp, Elizabeth Helmkamp 2012-11-12 20123 El Dorado East end of Sacramento Valley, El Dorado Hills; 100 yards east of Golden Foothill Parkway on Cypress Point Ct. (cul-de-sac), 0.7 mile south of Windfield Parkway 159 Comment
  UCR253622  Digitaria sanguinalis George K. Helmkamp, Elizabeth Helmkamp 2012-11-12 20134 El Dorado Eastern Sacramento Valley, El Dorado Hills; Windfield Parkway 0.2 mile south of White Rock Road 175 Comment
  UCR253632  Epilobium brachycarpum George K. Helmkamp, Elizabeth Helmkamp 2012-11-12 20126 El Dorado East end of Sacramento Valley, El Dorado Hills; 100 yards east of Golden Foothill Parkway on Cypress Point Ct. (cul-de-sac), 0.7 mile south of Windfield Parkway 159 Comment
  UCR257707  Vicia sativa subsp. nigra George K. Helmkamp, Mary Alice Barnes 2013-4-30 20439 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
  UCR257817  Carex vesicaria George K. Helmkamp, Amy Barnes 2012-8-19 19664 El Dorado Northern Sierra Nevada Mountains, northwest side of Ice House Road, 0.2 mile north of its junction with Forest Route 13N20, c 1.3 miles northeast of Wentworth Springs Road 1787 Comment
  UCR257919  Epilobium brachycarpum George K. Helmkamp, Amy Barnes 2014-7-28 22965 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 1.6 miles west of Ice House Road 1863 Comment
  UCR257922  Pseudognaphalium canescens subsp. thermale George K. Helmkamp, Amy Barnes 2014-7-28 22956 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 1.6 miles west of Ice House Road 1863 Comment
  UCR257956  Juncus macrandrus George K. Helmkamp, Amy Barnes 2014-7-28 22963 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 1.6 miles west of Ice House Road 1863 Comment
  UCR258107  Epilobium glaberrimum subsp. fastigiatum George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19577 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 1.4 miles west of its junction with CA-88 2287 Comment
  UCR258409  Trifolium glomeratum George K. Helmkamp 2014-5-25 22917 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Patterson Drive and CA-49, Diamond Springs 527 Comment
  UCR258416  Eriophyllum lanatum var. croceum George K. Helmkamp, Amy Barnes 2014-8-11 22990 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
  UCR273807  Lessingia leptoclada George K. Helmkamp 2005-7-31 9726 El Dorado Northern Sierra Nevada Foothills, Junction of Ice House Road and Calif. Highway 50, east of Pollock Pines 1006 Comment
  UCR275752  Juglans californica var. hindsii George K. Helmkamp, E. A. Helmkamp 2009-9-17 15633 El Dorado Sierra Nevada Mountains Foothills, Bucks Bar Road, 0.8 mile southeast of its junction with Pleasant Valley Road 683 Comment
  UCSB71615  Draba verna Helmkamp, G.; Helmkamp, E. 2007-3-22 El Dorado Foothills, Northern Sierra Nevada Mountains; Mt. Aukum Road at the crossing of the middle fork of Cosumnes river, west of jct. of Bucks Bar Road (Camino 7.5' Q.:+/- 1000m) 622 Comment
  SEINET2033540 Image available Epilobium angustifolium subsp. circumvagum George K. Helmkamp, E. A. Helmkamp 2008-1 El Dorado Northern Sierra Nevada Mountains, Echo Summit, west side of a highway maintenance station and about 100 yards north of CA-50 Comment
  UCD109117  Vicia villosa subsp. varia G. 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
  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
  UCR107352  Marrubium vulgare George K. Helmkamp, E. A. Helmkamp 1998-5-14 3622 Fresno Coast Range, Warthan Creek Canyon, along Calif. Hwy 198, 27.6 mi. west of Interstate 5, west of Coalinga 457 Comment
  SD243125  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2011-10-8 18386 Glenn Northern Sacramento Valley: Co. Road 61 (Riz Road), 2.6 miles east of CA-45 and at the junction with Co. Road V, 8.26 miles SE (124a^z) of Willows (Princeton 7.5'Q) 25 Comment
  SEINET4691725  Acmispon americanus var. americanus G. K. Helmkamp, E. A. Helmkamp 2011-1 18398 Glenn Northern Sacramento Valley: Road 60 (Riz Rd) at the junction with Co. Road P, 5.1 miles SE (144 degrees) of Willows. 30 Comment
  UCR232657  Brassica geniculata George K. Helmkamp, E. A. Helmkamp 2011-10-8 18379 Glenn Northern Sacramento Valley, along CA-45, 1.2 miles north of Princeton; Sacramento River side of the levee between the highway and Packer Island 29 Comment
  UCR238741  Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-2-9 18542 Glenn Sacramento Valley, along CA-162 at Main St., Butte City, near Sacramento River 35 Comment
  UCR238746  Lolium multiflorum George K. Helmkamp, E. A. Helmkamp 2012-2-9 18537 Glenn Sacramento Valley, Norman Road/ Rd. 68, 0.4 mile west of the Colusa County line, beside the Sacramento National Wildlife Refuge 24 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
  UCR122360  Rumex conglomeratus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6982 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
  UCR122364  Claytonia sibirica George K. Helmkamp, E. A. Helmkamp 2001-7-8 6975 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
  UCR122370  Polygonum paronychia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7018 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  UCR122374  Scrophularia californica subsp. californica George K. Helmkamp, E. A. Helmkamp 2001-7-8 7011 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR122380  Jaumea carnosa George K. Helmkamp, E. A. Helmkamp 2001-7-8 7004 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR122384  Lupinus arboreus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6999 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR123947  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2001-7-8 6987 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
  CAS-BOT-BC167344  Fagonia laevis G. K. Helmkamp; E. Helmkamp 1998-1-24 2597 Imperial 4.2 mi. N of Winterhaven on Picacho Rd, where the road crosses the canal 91 Comment
  CLARK-A1045-1201  Oligomeris linifolia George K. Helmkamp 1977-1-22 Imperial Yuha Desert Crucifixion Thorn Natural Area [9 miles southeast of Ocotillo]; Coyote Wells 7.5'Q Comment
  CLARK-A1045-1206  Camissonia cardiophylla George K. Helmkamp 1977-1-22 Imperial Yuha Desert Mount Signal [area], 2 miles south of State Highway 98, gravel pit; ; Mount Signal 7.5'Q Comment
  CLARK-A1045-1212  Aristida californica George K. Helmkamp 1977-1-22 Imperial Yuha Desert where Pinto Wash crosses State Highway 98; ; Yuha Basin 7.5'Q 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
  RSA489398  Baileya pauciradiata George K. Helmkamp 1988-2-28 s.n. Imperial just N of Signal Mts, S of Hwy deserticola. 30 Comment
  SD143741  Aliciella latifolia G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2944 Imperial Colorado Desert: Little Picacho Wash along Picacho Rd. 2.5 miles south of Picacho State Recreation Area. 152 Comment
  SD143780  Eriogonum thomasii G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2879 Imperial 4.7 miles north of Winterhaven, on Picacho Road and 1 mile northwest of the All American Canal. (IPB 10/07) 75 Comment
  SD143833  Horsfordia newberryi G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2959 Imperial Little Picacho Wash along Picacho Road, 2.5 miles south of Picacho State Recreation Area. 152 Comment
  SD143852  Nama hispida var. spathulata G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2898 Imperial 7.0 miles north of Winterhaven on Picacho Road and 1.7 miles east on powerline road. 198 Comment
  SD143890  Marina parryi G. K. Helmkamp, E. Helmkamp 1998-1-24 2610 Imperial Ogilby Road, 14.2 miles south of the junction with Highway California 78; vicinity of Tumco Wash. 182 Comment
  SD143939  Brandegea bigelovii G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2902 Imperial 7 Mi. N of Winterhaven on Picacho Rd,; 1.7 mi. E on Powerline Rd. 198 Comment
  SD143958  Achyronychia cooperi G. K. Helmkamp, E. Helmkamp 1998-1-24 2591 Imperial Along US Hwy 186, 1.6 miles northeast of the Mexican border and Andrade 60 Comment
  SD144002  Cryptantha costata G. K. Helmkamp, E. Helmkamp 1998-1-24 2588 Imperial 0.2 mi. S of jct. of Ogilby Rd. and Hwy. I-8. 46 Comment
  SD144061  Baileya pauciradiata G. K. Helmkamp, E. Helmkamp 1998-1-24 2573 Imperial Between Hwy I-8 & the All-American Canal across form the Brock Research Center (ca. 3 mi. E of the jct of Hwy CA-98 with Hwy I-8) 46 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
  UCR103601  Euphorbia pediculifera George K. Helmkamp, E. A. Helmkamp 1998-3-19 2934 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103606  Camissonia brevipes subsp. arizonica George K. Helmkamp, E. A. Helmkamp 1998-3-19 2940 Imperial Sonoran (Colorado) Desert, Imperial Dam area, along Ferguson Rd, 1.5 mi. north of Hwy S-24. 91 Comment
  UCR103608  Hibiscus denudatus George K. Helmkamp, E. A. Helmkamp 1998-3-19 2941 Imperial Sonoran (Colorado) Desert, Imperial Dam area, along Ferguson Rd, 1.5 mi. north of Hwy S-24. 91 Comment
  UCR103619  Chaenactis carphoclinia var. carphoclinia George K. Helmkamp, E. A. Helmkamp 1998-3-19 2926 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103622  Cryptantha maritima George K. Helmkamp, E. A. Helmkamp 1998-3-19 2912 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
  UCR103632  Fagonia laevis George K. Helmkamp, E. A. Helmkamp 1998-3-19 2916 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
  UCR103651  Abronia villosa George K. Helmkamp, E. Helmkamp 1998-1-28 2625 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
  UCR103656  Euphorbia setiloba George K. Helmkamp, E. A. Helmkamp 1998-1-17 2554 Imperial Salton Sea, c. 2 mi NW of Salton City at the end of Treadwell St. -61 Comment
  UCR103658  Mentzelia longiloba var. longiloba George K. Helmkamp, E. Helmkamp 1998-1-24 2575 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
  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
  UCR50457  Perityle emoryi George K. Helmkamp 1988-2-28 34 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
  UCR50458  Cryptantha costata George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR59724  Hyptis emoryi George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Beside Indian Pass Rd, 7.2 mi NE of Ogilby Rd (S34). 220 Comment
  UCR91946  Psathyrotes ramosissima George K. Helmkamp 1996-3-11 1004 Imperial Sonoran (Colorado) Desert, Edge of Walter's Camp Road, 3/4 mi west of the Colorado River 79 Comment
  CLARK-A1045-3  Eriophyllum ambiguum George K. Helmkamp 1977-4-23 Inyo Panamint Mountains roadside, south of Emigrant Pass; 1066 Comment
  CLARK-A1045-671  Gilia latifolia George K. Helmkamp 1977-4-23 Inyo 15 miles north of Trona; roadside along Trona Road Comment
  OBI43738  Eriogonum contiguum G. K. Helmkamp 1986-9-28 s.n. Inyo Furnace Crk wash, along hwy 190 between Death Valley jctn and Furnace Crk, 1.5 mi E of D.V. Natl Monument border 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
  OBI43759  Stephanomeria pauciflora G. K. Helmkamp 1986-9-28 s.n. Inyo 0.4 mi N of Tecopa 427 Comment
  RSA0124843  Eriastrum wilcoxii George K. Helmkamp 1997-9-30 2482 Inyo East side of White Mountains. 1707 Comment
  RSA567464  Camissonia claviformis subsp. claviformis George K. Helmkamp 1993-6-16 16 -Jan Inyo 2 miles south of Pleasant Valley campground beside the Owens River. 1280 Comment
  UCR100332  Machaeranthera canescens subsp. canescens George K. Helmkamp 1997-9-30 2464 Inyo White Mountains, 6.1 mi north of Calif. Hwy 168 on White Mountain Road 2622 Comment
  UCR100351  Eriogonum brachyanthum George K. Helmkamp 1997-9-30 2492 Inyo White Mountains, [Deep Springs Valley], east side of White Mountains 1585 Comment
  UCR100356  Eriogonum nidularium George K. Helmkamp 1997-9-30 2487 Inyo White Mountains, [Deep Springs Valley], east side of White Mountains 1585 Comment
  UCR100358  Tiquilia nuttallii George K. Helmkamp 1997-9-30 2485 Inyo White Mountains, [Deep Springs Valley], east side of White Mountains 1585 Comment
  UCR100623  Machaeranthera canescens subsp. canescens George K. Helmkamp 1997-9-30 2480 Inyo White Mountains, [Deep Springs Valley], east side of White Mountains 1585 Comment
  UCR107338  Eriogonum umbellatum var. nevadense George K. Helmkamp 1997-9-29 2432 Inyo Sierra Nevada Mtns, Onion Valley, west of Independence 2805 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
  UCR121945  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2000-7-19 5917 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121950  Arenaria kingii var. glabrescens George K. Helmkamp, E. A. Helmkamp 1998-8-11 4298 Inyo White Mountains, along White Mtn. Rd. and west of the Bristlecone Pine boundary; 0.5 miles northwest of Shulman Grove 3079 Comment
  UCR121954  Astragalus lentiginosus var. semotus George K. Helmkamp, E. A. Helmkamp 1998-8-11 4293 Inyo White Mountains, along White Mtn. Rd. and west of the Bristlecone Pine boundary; 0.5 miles northwest of Shulman Grove 3079 Comment
  UCR123198  Penstemon heterodoxus George K. Helmkamp, E. A. Helmkamp 1998-8-12 4398 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR124182  Juncus parryi George K. Helmkamp, E. A. Helmkamp 1998-8-12 4380 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR134700  Sphenosciadium capitellatum George K. Helmkamp, E. A. Helmkamp 1998-8-10 4274 Inyo Eastern Sierra Nevada Mountains, along Big Pine Creek 12 mi west of Big Pine along Glacier Lodge Rd. 2317 Comment
  UCR13836  Cleomella obtusifolia George K. Helmkamp 1973-6-15 s.n. Inyo Owens Valley, Owens River at Pleasant Valley, near Mono county line 1372 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
  UCR15480  Nemacladus sigmoideus George K. Helmkamp 1978-5-28 s.n. Inyo Eastern Sierra Nevada Mtns., lower Rock Creek Road 2170 Comment
  UCR17330  Chorizanthe brevicornu var. brevicornu George K. Helmkamp 1973-6-14 s.n. Inyo Eastern Sierra Nevada Mtns, Sherwin Grade on US Hwy 395 1982 Comment
  UCR17699  Gnaphalium luteoalbum George K. Helmkamp 1973-6-13 s.n. Inyo Owens Valley, Owens River near Pleasant Valley 1372 Comment
  UCR87533  Phacelia calthifolia George K. Helmkamp 1993-4-24 s.n. Inyo Northern Mojave Desert, 4 mi. south of Shoshone, along Hwy 127 488 Comment
  UCR89994  Cryptantha maritima George K. Helmkamp 1995-3-26 s.n. Inyo Northern Mojave Desert, at turnoff from Death Valley Road to Ubehebe Crater 600 Comment
  UCR99893  Castilleja applegatei subsp. pallida George K. Helmkamp 1997-9-29 2423 Inyo Sierra Nevada Mtns, Onion Valley west of Independence. 2805 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
  UCR99927  Eriogonum wrightii var. subscaposum George K. Helmkamp 1997-9-29 2438 Inyo Sierra Nevada Mountains, Onion Valley Road, 7.9 mi west of Hwy US-395 from Independence 2159 Comment
  UCR99928  Eriogonum kennedyi var. purpusii George K. Helmkamp 1997-9-30 2462 Inyo White Mountains, 6.1 mi north of Calif. Hwy 168 on White Mountain Road 2622 Comment
  UCR99929  Arabis lemmonii var. lemmonii George K. Helmkamp 1997-9-29 2447 Inyo Sierra Nevada Mountains, Onion Valley Road, 7.9 mi west of Hwy US-395 from Independence 2159 Comment
  CLARK-A1045-30  Stipa speciosa George K. Helmkamp 1977-4-23 Inyo Panamint Mountains Comment
  CLARK-A1045-31  Coldenia plicata George K. Helmkamp 1977-4-24 Inyo 15 miles north of Trona; Creosote Bush scrub Comment
  RSA567474  Cleomella obtusifolia George K. Helmkamp 1993-6-16 s.n. Inyo 2 miles S of Pleasant Valley campground, beside the Owens River. 1280 Comment
  CAS-BOT-BC405343  Stellaria pallida G. K. Helmkamp; E. A. Helmkamp 1997-9-7 1389 Kern San Emidgio Ranch, SE portion. 1494 Comment
  CLARK-A1045-1020  Cardaria pubescens var. elongata George K. Helmkamp 1977-6-11 Kern Weldon roadside ditch beside farmland; ; Weldon 7.5'Q 914 Comment
  CLARK-A1045-864  Nicotiana attenuata George K. Helmkamp 1977-6-11 Kern Kern River Onyx 7.5'Q Comment
  CLARK-A1045-975  Kochia scoparia George K. Helmkamp 1977-6-11 A Kern Red Rock Canyon Southwest edge of El Paso Mountains; entry to Canyon; junction of US Highway 6 and road to California City; ; Cantil 7.5'Q 761 Comment
  CLARK-A1045-983  Lotus purshianus George K. Helmkamp 1977-6-11 Kern Weldon Weldon 7.5'Q Comment
  CLARK-A1045-995  Mirabilis bigelovii George K. Helmkamp 1977-6-11 B Kern Indian Wells Valley Junction of State Highway 14 with State Highway 178; ; Freeman Junction 7.5'Q 1219 Comment
  IRVC29251  Ribes nevadense G. K. Helmkamp, E. A. Helmkamp 2000-4-25 5582 Kern Water Cyn Rd SW of Tehachapi and 1.0 mi S of Highline. Tehachapi Mountains 1494 Comment
  IRVC29526  Coreopsis bigelovii G. K. Helmkamp, E. A. Helmkamp 2000-4-25 5609 Kern Oak Crk Rd., 1.5 mi E of Tehachapi Willow Springs Rd (about due W of Mojave and SE of Tehachapi. Tehachapi Mountains 1189 Comment
  IRVC29528  Gilia brecciarum subsp. neglecta G. K. Helmkamp, E. A. Helmkamp 2000-4-25 5594 Kern Tehachapi Valley, SE of Tehachapi Willow Springs Rd and 2.3 mi N of Oak Creek Rd. Tehachapi Mountains 1524 Comment
  RSA613704  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 1998-4-9 3269 Kern Foothills of the Tehachapi Mtns, E of Arvin along CA hwy 223. 305 Comment
  RSA613872  Lupinus nanus subsp. nanus George K. Helmkamp, E. A. Helmkamp 1997-3-6 1363 Kern Tehachapi Mtns./San Joaquin Valley [Edmonston] Pumping plant road c. 5 mi. east of Grapevine near Pastoria Creek. 399 Comment
  RSA613882  Lupinus microcarpus George K. Helmkamp, E. A. Helmkamp 1998-4-7 3193 Kern SW of Maricopa, 1.7 miles NW of CA highway 33 on Elkhorn Grade Rd. 396 Comment
  RSA667076  Cryptantha simulans George K. Helmkamp, E. Helmkamp 2001-5-2 6646 Kern Temblor Range; CA-58, very near the San Luis Obispo Co. line. 427 Comment
  RSA667081  Lepidium dictyotum var. acutidens George K. Helmkamp, E. A. Helmkamp 2001-4-27 6539 Kern Central CA Valley; Enos Lane Rd., 1.9 mi S of CA-119 (NE of Taft). 61 Comment
  RSA710032  Phacelia tanacetifolia George K. Helmkamp, E. A. Helmkamp 2001-5-2 6653 Kern Temblor Range; CA-58, very near the San Luis Obispo Co. line. 427 Comment
  SD148188  Atriplex phyllostegia G. K. Helmkamp, E. A. Helmkamp 2001-4-27 6547 Kern Enos Lane Road, 1.9 miles south of California 119. 60 Comment
  SEINET235064  Rumex crispus George K. Helmkamp, E. A. Helmkamp 1998-5-13 3555 Kern Greenhorn Mtns Southern Sierra Nevada: 6.5 mi SW of Woody along Bakersfield/Glennville RD (NE of Bakersfield). Near Horse Canyon 396 Comment
  SEINET235068  Plagiobothrys nothofulvus G. K. Helmkamp, E. A. Helmkamp 1998-5-13 3534 B Kern Greenhorn Mtns Southern Sierra Nevada: 6.5 mi. SW of Woody along Bakersfield/Glennville RD (NE of Bakersfield). Near Ho 396 Comment
  SEINET272163  Ranunculus canus G. K. Helmkamp, E. A. Helmkamp 1997-3-7 1392 Kern San Emidgio Ranch; SE portion. [UTM 10km cell: LJ-0E, 6N. San Emidgio Mtn.] 1494 Comment
  UCD127018  Solanum umbelliferum G. K. Helmkamp; E. A. Helmkamp 2001-4-27 6556 Kern Temblor Range, CA-58, 1.1 mi SW of the San Luis Obispo Co. line. 792 Comment
  UCD97374  Atriplex covillei G. K. Helmkamp; E. A. Helmkamp 2001-4-27 6547 Kern Central CA Valley, Enos Lane Road, 1.9 miles S of CA-119 (NE of Taft.) 61 Comment
  UCR100931  Phacelia distans George K. Helmkamp, E. A. Helmkamp 1998-4-9 3262 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
  UCR100936  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 1998-4-8 3204 Kern SW of Maricopa 1.7 mi NW of Calif. hwy 33 on Elkhorn Grade Rd. 396 Comment
  UCR100938  Lepidium nitidum var. nitidum George K. Helmkamp, E. A. Helmkamp 1998-4-8 3202 Kern SW of Maricopa 1.7 mi NW of Calif. hwy 33 on Elkhorn Grade Rd. 396 Comment
  UCR101059  Koeleria gerardi George K. Helmkamp, E. A. Helmkamp 1998-4-9 3281 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR101115  Solanum umbelliferum George K. Helmkamp, E. A. Helmkamp 1998-4-8 3247 Kern 2.3 mi. NE of Cerro Noroeste Rd along Calif. Hwy 33, SW of Maricopa 793 Comment
  UCR101626  Amsinckia eastwoodiae George K. Helmkamp, E. A. Helmkamp 1997-3-6 1362 Kern Tehachapi Mtns./San Joaquin Valley, [Edmonston] Pumping plant road c. 5 mi. east of Grapevine near Pastoria Creek 399 Comment
  UCR122560  Phacelia tanacetifolia George K. Helmkamp, E. A. Helmkamp 2001-4-27 6558 Kern Temblor Range, CA Hwy 58, 1.1 mi SW of the San Luis Obispo Co. line 793 Comment
  UCR123545  Layia glandulosa George K. Helmkamp, E. A. Helmkamp 2000-4-25 5598 Kern Tehachapi Mountains, Tehachapi Valley SE of Tehachapi Willow Springs Rd, 2.3 mi north of Oak Creek Road 1524 Comment
  UCR123934  Pholistoma membranaceum George K. Helmkamp, E. A. Helmkamp 2001-4-27 6553 Kern Temblor Range, CA Hwy 58, 1.1 mi SW of the San Luis Obispo Co. line 793 Comment
  UCR123943  Plagiobothrys leptocladus George K. Helmkamp, E. A. Helmkamp 2001-4-27 6540 Kern San Joaquin Valley, Enos Lane Rd., 1.9 mi south of Calif. Hwy 119, NE of Taft 61 Comment
  UCR124071A  Linanthus parviflorus George K. Helmkamp, E. A. Helmkamp 2001-4-27 6557 Kern Temblor Range, CA Hwy 58, 1.1 mi SW of the San Luis Obispo Co. line 793 Comment
  UCR129532  Argemone munita George K. Helmkamp, E. A. Helmkamp 1998-5-21 4040 Kern Western Mojave Desert, South base, Tehachapi Mtns., 4.0 mi north of Calif. Hwy 138 (Lancaster Rd) on 300th St. West 1006 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
  UCR130250  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2001-4-27 6505 Kern Tehachapi Mtns, Hart Flat turnoff from Calif. Hwy 58 884 Comment
  UCR130254  Clarkia cylindrica subsp. clavicarpa George K. Helmkamp, E. A. Helmkamp 2001-4-27 6509 Kern Tehachapi Mtns, Hart Flat turnoff from Calif. Hwy 58 884 Comment
  UCR130950  Chlorogalum pomeridianum George K. Helmkamp, E. A. Helmkamp 1998-5-13 3559 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
  UCR130954  Marrubium vulgare George K. Helmkamp, E. A. Helmkamp 1998-5-13 3556 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
  UCR15532  Gilia malior George K. Helmkamp 1978-4-10 s.n. Kern Western Mojave Desert, 2 miles east of Mojave [on Hwy 58] 814 Comment
  UCR157801  Pseudostellaria jamesiana George K. Helmkamp, E. A. Helmkamp 1998-6-29 4190 Kern Tehachapi Mountains, Tehachapi Mountain Park, 4.2 miles SW of Highline Road along Water Canyon Road 1768 Comment
  UCR157806  Lithophragma parviflorum var. parviflorum George K. Helmkamp, E. A. Helmkamp 1998-6-29 4197 Kern Tehachapi Mountains, Tehachapi Mountain Park, 4.2 miles SW of Highline Road along Water Canyon Road 1768 Comment
  UCR157808  Calystegia malacophylla subsp. pedicellata George K. Helmkamp, E. A. Helmkamp 1998-6-29 4199 Kern Tehachapi Mountains, Tehachapi Mountain Park, 4.2 miles SW of Highline Road along Water Canyon Road 1768 Comment
  UCR157819  Plectritis brachystemon George K. Helmkamp, E. A. Helmkamp 1998-6-29 4155 Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 Comment
  UCR157822  Clarkia heterandra George K. Helmkamp, E. A. Helmkamp 1998-6-29 4170 Kern Tehachapi Mountains, Tehachapi Mountain Park, 4.2 miles SW of Highline Road along Water Canyon Road 1768 Comment
  UCR157832  Sisymbrium orientale George K. Helmkamp, E. A. Helmkamp 1998-6-29 4150 Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 Comment
  UCR26792  Isomeris arborea var. globosa George K. Helmkamp 1982-5-14 s.n. Kern Tehachapi Mtns., 2 mi south of Gorman, along Gorman Post Road 1223 Comment
  UCR27485  Silene verecunda George K. Helmkamp 1982-9-17 s.n. Kern 4.2 mi. above snow gate on the road to Mt. Pinos 2134 Comment
  SD130323  Plagiobothrys nothofulvus George Helmkamp 1990-4-19 Kern Tehachapi Mountains,. Along state highway 58g at Hart Flat Road, 2.0 miles west of Keene. 762 Comment
  RSA530489  Monardella odoratissima subsp. odoratissima George K. Helmkamp 1990-10-4 R- 22 Lassen Plumas Nat. For., S of Susanville, N of Milford Pass. 1463 Comment
  UCR202646  Brickellia microphylla George K. Helmkamp 1990-9-23 B- 15 Lassen Modoc Plateau, Susanville 1189 Comment
  UCR67435  Ambrosia acanthicarpa George K. Helmkamp 1990-9-23 A- 3 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  SD148205  Plagiobothrys arizonicus G. K. Helmkamp, E. A. Helmkamp 1998-5-21 4043 Los Angeles Junction of Munz Ranchg Road and Lake Elizabeth Road north of Lake Elizabeth. 1098 Comment
  UCR26755  Linanthus liniflorus 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
  SBBG119155  Cryptantha intermedia G. K. Helmkamp with E. A. Helmkamp 1998-5-21 4045 Los Angeles jct of Munz Ranch Rd and Lake Elizabeth Rd, N of Lake Elizabeth 1006 Comment
  UCR122390  Plectritis ciliosa subsp. insignis George K. Helmkamp, E. A. Helmkamp 2002-4-23 7496 Madera Western Sierra Nevada foothills, Bass Lake Road, 1 mile southeast of the junction with CA Hwy 41, north of Oakhurst 915 Comment
  UCR122394  Ranunculus californicus var. californicus George K. Helmkamp, E. A. Helmkamp 2002-4-23 7494 Madera Western Sierra Nevada foothills, Bass Lake Road, 1 mile southeast of the junction with CA Hwy 41, north of Oakhurst 915 Comment
  UCR122413  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 2002-4-24 7535 Madera Western Sierra Nevada foothills, Auberry Rd (Rd 200/North Fork Rd.) 5.0 mi south of North Fork 503 Comment
  UCR122417  Claytonia perfoliata subsp. perfoliata George K. Helmkamp, E. A. Helmkamp 2002-4-24 7589 Madera Western Sierra Nevada foothills, Auberry Rd (Rd 200/North Fork Rd.) 5.0 mi south of North Fork 503 Comment
  UCR18555  Eriogonum roseum George K. Helmkamp 1974-10-18 s.n. Madera Sierra Nevada Mtns. Foothills, Fresno River at Yosemite Forks 854 Comment
  UCR18606  Madia elegans George K. Helmkamp 1974-10-18 s.n. Madera Manzanita Lake, at the parking lot Comment
  UCR18607  Carex kelloggii George K. Helmkamp 1974-10-18 s.n. Madera Sierra Nevada Mtns., South Fork of Willow Creek at North Fork 793 Comment
  CLARK-A1045-1393  Lupinus latifolius var. columbianus George K. Helmkamp 1977-8-5 Mariposa Sierra Nevada Porcupine Flats Campground; wet meadow beside stream; ; Yosemite Falls 7.5'Q 2590 Comment
  CLARK-A1045-1404  Luzula comosa George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada Porcupine Flats Campground; edge of meadow; ; Yosemite Falls 7.5'Q 2590 Comment
  CLARK-A1045-1444  Solanum xanti George K. Helmkamp 1977-8-5 Mariposa Sierra Nevada Yosemite Creek, dry bank beside creek; ; Ten Lakes 7.5'Q 2499 Comment
  UCR87686  Mimulus pilosus George K. Helmkamp, E. A. Helmkamp 1995-6-21 95-1- Mariposa Sierra Nevada Mtns., above Merced River arm of Lake McClure along Calif. Hwy 40, 0.75 mi north of the crossing at Hell Hollow 381 Comment
  UCR87969  Githopsis pulchella George K. Helmkamp, E. A. Helmkamp 1995-6-21 95-5- 06 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
  RSA614896  Stellaria media George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-25 2107 Mendocino State Hwy 128, 1.5 miles SE of Boonville, in Anderson Valley. 152 Comment
  SD224990  Aesculus californica G. K. Helmkamp, E. A. Helmkamp 1997-6-25 2100 Mendocino State Hwy 128 about 5 mi. NW of Cloverdale. 427 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
  SEINET273114 Image available Polygonum paronychia G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1997-6-26 2168 Mendocino Fort Bragg 6 Comment
  UCR104839  Crepis capillaris George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2136 Mendocino North Coast Range, Anderson Valley, Calif. Hwy 128, NW of Boonville 91 Comment
  UCR106472  Oenothera glazioviana George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2181 Mendocino North Coast, Big River, 0.2 mi east of US-1, south of Mendocino 6 Comment
  UCR106692  Briza maxima George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2161 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR121520  Juncus patens George K. Helmkamp, E. A. Helmkamp 2000-6-19 5792 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR122209  Rhododendron macrophyllum George K. Helmkamp, E. A. Helmkamp 2000-6-20 5798 Mendocino North Coast, 9.2 mi east of CA Hwy 1 on CA Hwy 20, east of Fort Bragg 305 Comment
  UCR122211  Gaultheria shallon George K. Helmkamp, E. A. Helmkamp 2000-6-18 5802 Mendocino North Coast Range, 9.2 mi east of CA Hwy 1 on CA Hwy 20, southeast of Fort Bragg 305 Comment
  UCR122216  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp 2000-6-18 5807 Mendocino North Coast Range, 9.2 mi east of CA Hwy 1 on CA Hwy 20, southeast of Fort Bragg 305 Comment
  UCR131862  Grindelia stricta var. platyphylla George K. Helmkamp, E. A. Helmkamp 2000-6-18 5746 Mendocino North Coast, Glass Beach at Fort Bragg 9 Comment
  UCR132125  Lavatera arborea George K. Helmkamp, E. A. Helmkamp 2000-6-18 5723 Mendocino North Coast, Glass Beach, Fort Bragg 9 Comment
  UCR132135  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2000-6-18 5705 Mendocino North Coast, along Calif. Hwy 128, approximately 10 mi east of the coast 274 Comment
  UCR134704  Leucanthemum vulgare George K. Helmkamp, E. A. Helmkamp 2000-6-18 5716 A Mendocino North Coast, along Calif. Hwy 128, approximately 10 mi east of the coast 274 Comment
  UCR67455  Juncus bufonius George K. Helmkamp 1990-9-23 I- 16 Modoc Warner Mtns, Goose Lake, within 0.1 mi of the Oregon border 1476 Comment
  UCR87511  Polyctenium fremontii George K. Helmkamp, E. A. Helmkamp 1993-5-4 s.n. Modoc 25.6 miles NW of Canby along Calif. Hwy 139 1280 Comment
  CLARK-A1045-1032  Potentilla breweri George K. Helmkamp 1977-7-3 Mono Sierra Nevada Tioga Pass 7.5'Q Comment
  CLARK-A1045-1055  Epilobium paniculatum George K. Helmkamp 1977-9-1 IV Mono Antelope Valley along River, one mile north of Coleville; ; Coleville 7.5'Q 1676 Comment
  CLARK-A1045-1229  Leptodactylon pungens George K. Helmkamp 1978-5-28 Mono Long Valley 1.5 miles west of Benton Crossing; ; Whitmore Hot Springs 7.5'Q 2133 Comment
  CLARK-A1045-1241  Eriogonum caespitosum George K. Helmkamp 1978-5-30 Mono Sierra Nevada near Conway Summit, along US Highway 395; Lundy 7.5'Q Comment
  CLARK-A1045-1246  Athyrium alpestre subsp. americanum George K. Helmkamp 1977-7-3 Mono Sierra Nevada Tioga Pass grade, steep, rocky slope among Pinus flexilis; ; Tioga Pass 7.5'Q 2590 Comment
  OBI40207  Agrostis scabra G. K. Helmkamp 1985-8-23 885 -45 Mono Mammoth Lakes, edge of Lake Mamie 2591 Comment
  OBI40208  Artemisia ludoviciana subsp. albula G. K. Helmkamp 1985-8-23 885 -42 Mono Mammoth Lakes, edge of Lake Mamie 2591 Comment
  RSA351399  Carex lenticularis var. lipocarpa George K. Helmkamp 1985-8-23 885 -39 Mono Mammoth Lakes, edge of Lake Mamie. 2591 Comment
  RSA519146  Castilleja miniata George K. Helmkamp 1990-8-2 s.n. Mono Between Mammoth and Lake Mary. 2591 Comment
  RSA519283  Ericameria bloomeri George K. Helmkamp 1990-8-2 s.n. Mono Between Mammoth and Lake Mary. 2591 Comment
  RSA615449  Carex abrupta George K. Helmkamp, E. A. Helmkamp 1997-9-8 2276 Mono South side of Lake Mary, South of Mammoth Lakes. 2744 Comment
  SBBG119151  Koeleria macrantha G. K. Helmkamp with E. A. Helmkamp 1998-8-11 4334 b Mono Campito Meadow, W of White Mtn Rd at Poison Crk 3293 Comment
  SD232662  Chenopodium berlandieri George Helmkamp 1996-9-26 1227 Mono City of Mammoth Lakes. Solitary plant in disturbed roadside soil at the south end of the city. 2469 Comment
  SEINET891668  Carex specifica G. K. Helmkamp, E. A. Helmkamp 2000-1 5897 -A Mono Sierra Nevada Mountains: West side of Lake Mary, southwest of Mammoth Lakes. 2652 Comment
  UCD107589  Trifolium andersonii subsp. beatleyae G. K. Helmkamp; E. A. Helmkamp 1998-8-10 4323 Mono White Mountains. Campito Meadow, west of White Mountain Road at Poison Creek. 1003 Comment
  UCR102565  Mimulus mephiticus George K. Helmkamp, E. A. Helmkamp 1997-9-10 2328 Mono Eastern Sierra Nevada/Mono Basin, Big Sand Flat along CA Hwy 120 at Pilot Spring Road, southeast of Mono Lake 2439 Comment
  UCR102575  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 1997-9-11 2356 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR102585  Penstemon newberryi George K. Helmkamp, E. A. Helmkamp 1997-9-11 2373 Mono Calif. Hwy 120 at Warren Fork Crk, c. 2 mi. east of Saddleback Lake Rd. 2896 Comment
  UCR102595  Penstemon heterodoxus var. heterodoxus George K. Helmkamp, E. A. Helmkamp 1997-9-11 2382 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR103540  Calyptridium umbellatum George K. Helmkamp, E. A. Helmkamp 1997-9-12 2406 Mono Along Calif. Hwy 120, 7.5 mi east of US Hwy 395 2125 Comment
  UCR103816  Artemisia tridentata var. vaseyana George K. Helmkamp, E. A. Helmkamp 1997-9-10 2348 Mono Eastern Sierra/ Great Basin, River Spring Lakes, 3.1 mi. NE of Calif. Hwy 120 on River Springs Rd 1979 Comment
  UCR103818  Ericameria parryi var. vulcanica George K. Helmkamp, E. A. Helmkamp 1997-9-10 2345 Mono Eastern Sierra Nevada Mountains, [along]Johnny Meadow Rd [FSR 1NO2B], 8.5 mi southeast of junction with CA Hwy 120, southeast of Mono Lake 2579 Comment
  UCR115829  Agrostis idahoensis George K. Helmkamp, E. A. Helmkamp 2000-7-18 5870 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
  UCR115839  Carex heteroneura var. heteroneura George K. Helmkamp, E. A. Helmkamp 2000-7-18 5885 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
  UCR121742  Montia chamissoi George K. Helmkamp, E. A. Helmkamp 1998-8-11 4324 Mono White Mountains, Campito Meadow, west of White Mountain Road at Poison Creek 3293 Comment
  UCR122339  Lupinus pratensis George K. Helmkamp, Elizabeth Helmkamp 2000-7-19 5902 Mono Sierra Nevada Mountains, Rock Creek Lake Rd., 1.1 mi north of the Inyo County line 2896 Comment
  UCR129551  Machaeranthera canescens subsp. canescens George K. Helmkamp, E. A. Helmkamp 2001-7-8 6823 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR129556  Leymus cinereus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6815 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR129558  Calochortus leichtlinii George K. Helmkamp, E. A. Helmkamp 2001-7-8 6812 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR132153  Agropyron trachycaulum George K. Helmkamp, E. A. Helmkamp 1993-7-28 188 Mono Sierra Nevada Mountains, Long Valley mesa at the junction of Owens River Road and Lake Crowley 2104 Comment
  UCR132157  Puccinellia lemmonii George K. Helmkamp, E. A. Helmkamp 1993-7-28 169 Mono Eastern Sierra Nevada /Owens Valley, Benton's Crossing of Owens River 2134 Comment
  UCR134454  Trifolium monanthum subsp. monanthum George K. Helmkamp, E. A. Helmkamp 1998-8-11 4331 Mono White Mountains, Campito Meadow, west of White Mountain Road at Poison Creek 3293 Comment
  UCR14374  Arnica chamissonis George K. Helmkamp 1974-7-27 s.n. Mono Owens Valley, Owens River, Big Springs 2195 Comment
  UCR15010  Carex straminiformis George K. Helmkamp 1976-6-22 s.n. Mono Sierra Nevada Mtns, Mammoth Lakes Village, roadside 2393 Comment
  UCR15015  Mimulus nanus var. mephiticus George K. Helmkamp 1976-6-22 s.n. Mono Sierra Nevada Mtns., Arcularius Ranch along Owens River 2134 Comment
  UCR15403  Erigeron compositus George K. Helmkamp 1977-7-3 s.n. Mono Sierra Nevada Mtns, just outside of Yosemite [National Park] in the Tioga Pass area [along Hwy 120] 2988 Comment
  UCR15461  Pyrrocoma uniflora George K. Helmkamp 1977-8-7 s.n. Mono Eastern Sierra/Owens Valley, Owens River Valley, just north of Benton Crossing 2104 Comment
  UCR15525  Chorizanthe watsonii George K. Helmkamp 1978-5-28 s.n. Mono Lower Rock Creek 1677 Comment
  UCR15590  Cryptantha confertiflora George K. Helmkamp 1978-5-29 s.n. Mono East Walker River at the Nevada border 1829 Comment
  UCR15595  Senecio fremontii var. occidentalis George K. Helmkamp 1978-5-30 s.n. Mono Eastern Sierra Nevada Mtns., c. 2 mi north of Conway Summit of Hwy US-395 2134 Comment
Read comments
Aug 5 2017
  UCR257932  Artemisia tridentata George K. Helmkamp, Amy Barnes 2014-8-27 23047 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 0.6 mile south of the junction with Big Springs Road 2360 Comment
  UCR275059  Penstemon rostriflorus George K. Helmkamp 2000-7-17 5827 Mono Sierra Nevada Mountains, South Twin Lake along Lake Mary Road, 3 miles SW of Mammoth Lakes 2561 Comment
  UCR31455A  Salix jepsonii George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Owens River, Big Springs Campground 2256 Comment
Read comments
May 30 2015
  UCR51454  Cryptantha circumscissa George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Owens River, alkaline flats between river and Glass Mtn, c. 6 mi. NE of Benton's Crossing 2195 Comment
  UCR57506  Perideridia parishii 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
  UCR57507  Chrysanthemum leucanthemum 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
  UCR57508  Epilobium angustifolium 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
  UCR59786  Hieracium albiflorum 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
  UCR59787  Lepidium virginicum 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
  UCR59789  Arnica mollis 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
  UCR59992  Cryptantha muricata var. denticulata George K. Helmkamp 1988-9-7 s.n. Mono Eastern Sierra Nevada Mountains, Hwy 395, 29 miles north of Inyo Co. line 2195 Comment
  UCR59993  Ericameria parryi George K. Helmkamp 1988-9-7 s.n. Mono Eastern Sierra Nevada Mountains, Hwy 395, 29 miles north of Inyo Co. line 2195 Comment
  UCR67450  Pyrrocoma uniflora George K. Helmkamp 1990-8-3 s.n. Mono Owens Valley, Beside Owens River, 3 mi upstream from Benton Crossing 2134 Comment
  UCR82196  Artemisia ludoviciana subsp. incompta George K. Helmkamp 1994-7-28 103- 01 Mono Eastern Sierra Nevada Mtns., Long Valley, Crowley Lake Road at Whiskey Creek, 3 miles east of Tom's Place 2119 Comment
  UCR82197  Lupinus lepidus var. confertus George K. Helmkamp 1994-7-28 105- 03 Mono Sierra Nevada Mtns., Long Valley, along US-395, 1.3 mi east of South Landing turnoff to Crowley Lake 2104 Comment
  UCR82198  Platanthera dilatata var. leucostachys George K. Helmkamp 1994-7-28 103- 3 Mono Eastern Sierra Nevada Mtns., Long Valley, Crowley Lake Road at Whiskey Creek, 3 miles east of Tom's Place 2119 Comment
  UCR82199  Juncus macrandrus George K. Helmkamp 1994-7-28 103- 7 Mono Eastern Sierra Nevada Mtns., Long Valley, Crowley Lake Road at Whiskey Creek, 3 miles east of Tom's Place 2119 Comment
  UCR88284  Senecio triangularis George K. Helmkamp 1995-9-21 95- 1 -18 Mono Eastern Sierra Nevada Mountains, south edge of Lake Mary, south of Mammoth Lakes 2805 Comment
  UCR88320  Horkelia fusca subsp. parviflora George K. Helmkamp 1995-9-23 4- 01 Mono Murphy Spring - Beside Bodie Rd., 3 mi southwest of Bodie State Historic Park 2500 Comment
  UCR88325  Cryptantha echinella George K. Helmkamp 1995-9-21 1- 4 Mono Sierra Nevada Mtns., south edge of Lake Mary, south of Lake Mary, Mammoth Lakes 2805 Comment
  UCR88333  Chaenactis douglasii var. douglasii George K. Helmkamp 1995-9-21 95-1- 06 Mono Sierra Nevada Mtns., south edge of Lake Mary, south of Lake Mary, Mammoth Lakes 2805 Comment
  SD129580  Arnica chamissonis G. Helmkamp 1989-8-1 Mono Beside U.S. Highway 395, just south of Devil's Gate Summit 2255 Comment
  SD193306  Salvia carduacea G. K. Helmkamp, E. A. Helmkamp 2005-5-12 9436 Monterey 8.0 miles west of US 101 on Highway CA-G-18 in Hames Valley. 341 Comment
  SD193334  Gilia achilleifolia subsp. achilleifolia G. K. Helmkamp, Elizabeth Helmkamp 2005-5-12 9439 Monterey 8.0 miles west of US 101 on Highway CA-G-18 in Hames Valley. 341 Comment
  SD193354  Prunus ilicifolia subsp. ilicifolia G. K. Helmkamp, Elizabeth Helmkamp 2005-5-12 9443 Monterey 8.0 miles west of U. S. 101 on Highway CA-G-18 in Hames Valley. 341 Comment
  SEINET12808616  Collinsia heterophylla George K. Helmkamp, Elizabeth Helmkamp 2005-1 9440 Monterey Central Coast Ranges: 8 mi W of US 101 on Hwy CA-G-18 in Hames Valley. Alt. 341m/1120 ft. 327 Comment
  SEINET237150  Aira caryophyllea G. K. Helmkamp, E. A. Helmkamp 1999-5-21 4899 Monterey Santa lucia Mtns. Willow Crk. Road 6.3 miles east of CA 1 North of Gorda Comment
  UCR102146  Scrophularia californica George K. Helmkamp, E. A. Helmkamp 1998-5-14 3679 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR102148  Solanum umbelliferum George K. Helmkamp, E. A. Helmkamp 1998-5-14 3674 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR103957  Pityrogramma triangularis George K. Helmkamp, E. A. Helmkamp 1997-6-23 2096 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
  UCR107302  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 1998-5-14 3645 Monterey Coast Range, Peachtree Valley, along Calif. Hwy 198, 6.2 mi. west of the Fresno/Monterey County lines. 503 Comment
  UCR107328  Clarkia affinis George K. Helmkamp, E. A. Helmkamp 1998-5-14 3659 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR118251  Ranunculus hebecarpus George K. Helmkamp, E. A. Helmkamp 2000-4-24 5522 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
  UCR118256  Delphinium parryi subsp. parryi George K. Helmkamp, E. A. Helmkamp 2000-4-24 5501 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
  UCR118258  Saxifraga californica George K. Helmkamp, E. A. Helmkamp 2000-4-24 5503 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
  UCR122617  Phacelia distans George K. Helmkamp, E. A. Helmkamp 2000-4-24 5521 Monterey Coast Ranges, Nacimiento-Ferguson Rd., (starts c. 12 mi. north of Gorda) 10.2 mi east of Calif. Hwy 1 at [Slickrock] Creek 457 Comment
  UCR123085  Castilleja affinis George K. Helmkamp, E. A. Helmkamp 2002-4-19 7489 Monterey Santa Lucia Mountains, Los Burros Rd. (N of Gorda); 2.4 mi east of Calif. Hwy 1 473 Comment
  UCR127072  Eriophyllum confertiflorum var. confertiflorum George K. Helmkamp, E. A. Helmkamp 1998-5-19 3857 Monterey Reservoir area., San Antonio Rd 0.7 mi north of G-14 (Interlake Rd between San Antonio and Nacimiento reservoirs) 335 Comment
  UCR127082  Verbena lasiostachys var. lasiostachys George K. Helmkamp, E. A. Helmkamp 1998-5-19 3842 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127118  Lupinus microcarpus var. densiflorus George K. Helmkamp, E. A. Helmkamp 1998-5-19 3813 Monterey Central Coast Ranges, Salinas Valley Quinado Cyn., 12 mi south of King City along (G-14) Jolon Road 412 Comment
  UCR130049  Vicia villosa subsp. varia George K. Helmkamp, E. A. Helmkamp 2000-4-24 5580 Monterey Salinas Valley, 3.0 miles south of Lockwood on Tule Cyn [Interlake] Rd. 244 Comment
  UCR130087  Thysanocarpus laciniatus George K. Helmkamp, E. A. Helmkamp 2000-4-24 5563 Monterey Salinas Valley., 8.4 mi lS of King City along G-14. 381 Comment
  UCR130097  Monolopia stricta George K. Helmkamp, E. A. Helmkamp 2000-4-24 5556 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
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Jun 19 2018
  UCR130599  Ceanothus foliosus subsp. medius George K. Helmkamp, E. A. Helmkamp 1999-5-21 4869 Monterey Santa Lucia Mountains, Willow Creek Road, 6.3 mi east of Calif. Hwy 1 north of Gorda 1037 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
  UCR159150  Arctostaphylos George K. Helmkamp, E. A. Helmkamp 1997-6-23 2099 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
  UCR159376  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2005-5-12 9453 Monterey Central Coast Ranges, 4 mi west of US-101 on Calif. Hwy G18 in Hames Valley 233 Comment
  UCR159378  Castilleja exserta subsp. exserta George K. Helmkamp, E. A. Helmkamp 2005-5-12 9459 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  UCR159381  Vicia villosa George K. Helmkamp, E. A. Helmkamp 2005-5-12 9448 Monterey Central Coast Ranges, 4 mi west of US-101 on Calif. Hwy G18 in Hames Valley 233 Comment
  UCR159386  Camissonia micrantha George K. Helmkamp, E. A. Helmkamp 2005-5-12 9429 Monterey Central Coast Ranges, 8 mi west of US-101 on Calif. Highway G18 in Hames Valley 341 Comment
  UCR159388  Vicia villosa George K. Helmkamp, E. A. Helmkamp 2005-5-12 9458 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  UCR159391  Briza minor George K. Helmkamp, E. A. Helmkamp 2005-5-12 9461 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  UCR160929  Dendromecon rigida George K. Helmkamp, E. A. Helmkamp 2005-6-5 9514 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
  UCR161660  Ceanothus thyrsiflorus George K. Helmkamp, E. A. Helmkamp 2005-5-17 9490 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  UCR161664  Oxalis corniculata George K. Helmkamp, E. A. Helmkamp 2005-5-17 9494 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  CAS-BOT-BC227844  Madia elegans G. K. Helmkamp; E. A. Helmkamp 2011-5-26 17380 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
  CAS-BOT-BC249055  Symphyotrichum spathulatum var. spathulatum George K. Helmkamp; E. A. Helmkamp 2010-8-26 16834 Nevada Northern Sierra Nevada Mountains: 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
  RSA0012126  Aster integrifolius George K. Helmkamp, E. A. Helmkamp 2010-8-26 16865 Nevada 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
  RSA0053697  Mimulus guttatus G. K. Helmkamp, E. A. Helmkamp 2012-9-25 19937 Nevada Northern Sierra Nevada Mountains: Bowman Lake Road, 0.1 mile south of the bridge over the South Fork Yuba River. 1424 Comment
  RSA794690  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp 2011-7-17 17738 Nevada Red Dog Road, 1.6 miles northeast of its junction with You Bet Road, 3 miles NE (313 deg ) of Gold Run 867 Comment
  RSA795180  Lathyrus nevadensis subsp. nevadensis George K. Helmkamp, E. A. Helmkamp 2011-6-9 17519 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
  SBBG128973  Pseudognaphalium thermale G. K. Helmkamp, E. A. Helmkamp 2010-8-26 16832 Nevada S Fork Yuba River, Forest Route 85 (Fordyce Lake Rd) N of Hampshire Rocks Rd and I-80, 1 mi NNW (351 deg) of Cisco 1634 Comment
  SD236228  Xanthium strumarium G. K. Helmkamp, E. A. Helmkamp 2006-10-10 11518 Nevada Northern Sierra Nevada Mountains Foothills: along Hwy CA-49, 5.8 miles NNW of Nevada City (Nevada City 7.5'Q) 750 Comment
  SD239505  Veratrum californicum George K. Helmkamp, E. A. Helmkamp 2011-7-26 17884 Nevada Northern Sierra Nevada Mountains:along CA Hwy 20, 0.8 mi. east of Bowman Lake Road, 1.23 mi NE (50a^z) of Emigrant Gap and 0.35 mi N of I-80 (Blue Canyon 7.5'Q0 1541 Comment
  SD239781  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2011-6-9 17518 A Nevada Northern Sierra Nevada Mountains Foothills: Tyler Foote, crossing Road, 3.3 miles north of its junction with Grizzly Hill Road, NE of North Columbia near the Sierra C. line/Middle Yuba River (Pike 7.5'Q) 878 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
  SD241178  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2012-6-13 19171 Nevada Northern Sierra Nevada Mountains Foothills: Washington Road, 3.6 miles north of its junction with CA-20 (Washington 7.5'Q) 1006 Comment
  SD243120  Chenopodium atrovirens George K. Helmkamp, E. A. Helmkamp 2011-9-30 18366 Nevada Northern Sierra Nevada Mountains: small, open flat along CA-20, 2.6 miles west of its junction with Lowell Hill Road (Washington 7.5'Q) 1581 Comment
  SD247373  Plagiobothrys nothofulvus George K. Helmkamp, Elizabeth Helmkamp 2013-4-13 20306 Nevada Northern Sierra Nevada Mountains Foothills: Magnolia Road, 3.0 miles east of its junction with CA-49. 495 Comment
  SEINET238568  Sidalcea malviflora G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1999-6-29 5032 Nevada Northern Sierra Nevada Range: N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon. 2134 Comment
  SEINET4560807  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2011-1 17765 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
  SEINET948240  Astragalus douglasii G. K. Helmkamp, E. A. Helmkamp 1999-1 5048 Nevada Northern Sierra Nevada Range: Prosser Creek at Hobart Mills, ca. 50-100 yards E of Hwy CA-89, & NE of Lake Tahoe (Hobart Mills 7.5' USGS Q) 1707 Comment
  UCD113910  Potentilla gracilis var. fastigiata G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11231 Nevada Northern Sierra Nevada Mtns: just south of I-80 on Lake Valley Rd. 1755 Comment
  UCD128844  Anaphalis margaritacea G. K. Helmkamp; E. A. Helmkamp 2007-8-1 12657 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
  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
  UCD141525  Juncus ensifolius G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11236 Nevada Northern Sierra Nevada Mtns.: just south of I-80 on Lake Valley Rd. 1755 Comment
  UCR121442  Heuchera rubescens var. glandulosa George K. Helmkamp, E. A. Helmkamp 1999-6-30 5091 Nevada Northern Sierra Nevada Range, Tahoe Nat. Forest, Donner Pass Rd. (=Hwy 40), 2.2 mi. west of Lake Donner. 1997 Comment
  UCR173340  Ceanothus oliganthus George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10378 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173344  Micropus californicus var. californicus George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10383 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173355  Lupinus albifrons var. collinus George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10416 Nevada Northern Sierra Nevada Foothills, along Calif. Hwy 49, 2.1 mi. N of the South Yuba River bridge 534 Comment
  UCR173451  Trifolium hirtum George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10373 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173523  Plectritis macrocera George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10393 Nevada Northern Sierra Nevada Foothills, Calif. Hwy 49 at the crossing of the South Yuba River (N of Nevada City) 402 Comment
  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
  UCR173533  Festuca megalura George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10402 Nevada Northern Sierra Nevada Foothills, Calif. Hwy 49 at the crossing of the South Yuba River (N of Nevada City) 402 Comment
  UCR173537  Vinca major George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10406 Nevada Northern Sierra Nevada Foothills, San Juan Ridge area at North Columbia, c. 9.3 mi. east of Calif. Hwy 49 884 Comment
  UCR176069  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2006-8-14 11244 Nevada Northern Sierra Nevada Mtns, about 0.7 mile east of Donner Pass along Donner Pass Road 2041 Comment
  UCR176079  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2006-8-14 11233 Nevada Northern Sierra Nevada Mtns, just south of I-80 on Lake Valley Rd 1755 Comment
  UCR189042  Apocynum androsaemifolium George K. Helmkamp, E. A. Helmkamp 2007-7-27 12616 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 11.2 miles north of its junction with CA-20 1793 Comment
  UCR189147  Hypericum formosum var. scouleri George K. Helmkamp, E. A. Helmkamp 2007-7-27 12595 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
  UCR189449  Cytisus scoparius George K. Helmkamp, E. A. Helmkamp 2007-3-31 11726 Nevada Foothills, Northern Sierra Nevada Mountains, just south of the crossing of CA-49 over the South Yuba River 390 Comment
  UCR193103  Sisyrinchium idahoense var. occidentale George K. Helmkamp, E. A. Helmkamp 2007-6-12 12348 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road 0.6 mile north of Hwy CA-20, at the border of Placer Co. 1387 Comment
  UCR193107  Linanthus ciliatus George 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 1604 Comment
  UCR195160  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2007-5-26 12087 Nevada Northern Sierra Nevada Mountains Foothills, along CA-49, 5.6 miles north of Nevada City 518 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
  UCR207031  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2009-5-28 14811 Nevada Sierra Nevada Mountains Foothills, along CA-49, 2.0 miles north of its junction with CA-20, north of Nevada City 780 Comment
  UCR229474  Navarretia leucocephala subsp. minima George K. Helmkamp, E. A. Helmkamp 2011-7-26 17873 Nevada Northern Sierra Nevada Mountains, along CA Hwy 20, 0.8 mi. east of Bowman Lake Road, 1.23 mi. NE (50 deg. ) of Emigrant Gap and 0.35 mi. N of I-80 1541 Comment
  UCR229484  Collomia grandiflora George K. Helmkamp, E. A. Helmkamp 2011-7-26 17882 Nevada Northern Sierra Nevada Mountains, along CA Hwy 20, 0.8 mi. east of Bowman Lake Road, 1.23 mi. NE (50 deg. ) of Emigrant Gap and 0.35 mi. N of I-80 1541 Comment
  UCR230610  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-5-26 17385 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
  UCR232653  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2011-9-30 18351 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
  UCR233199  Monardella breweri subsp. lanceolata George K. Helmkamp, E. A. Helmkamp 2011-7-17 17758 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 686 Comment
  UCR233649  Madia citrigracilis George 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 686 Comment
  UCR233663  Dryopteris arguta George K. Helmkamp, E. A. Helmkamp 2011-6-9 17515 Nevada Northern Sierra Nevada Mountains Foothills, 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
  UCR233667  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 2011-6-9 17504 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
  UCR233677  Castilleja miniata subsp. miniata George K. Helmkamp, E. A. Helmkamp 2010-8-26 16860 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
  UCR233683  Juncus ensifolius George K. Helmkamp, E. A. Helmkamp 2010-8-26 16858 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
  UCR233687  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2010-8-26 16862 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
  UCR234576  Pentagramma triangularis subsp. triangularis George K. Helmkamp, E. A. Helmkamp 2011-6-2 17452 Nevada Northern Sierra Nevada Mountains Foothills, 2.25 miles SW (226 deg. ) of French Corral, along Pleasant Valley Road, 1.1 miles south of its crossing of the South Fork Yuba River 255 Comment
  UCR234578  Rumex conglomeratus George K. Helmkamp, E. A. Helmkamp 2011-6-2 17454 Nevada Northern Sierra Nevada Mountains Foothills, 3.25 miles SW (216 deg. ) of French Corral, along Pleasant Valley Road, 3.3 miles south of its crossing of the South Fork Yuba River 338 Comment
  UCR234581  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2011-6-2 17437 Nevada Northern Sierra Nevada Mountains Foothills, Lake Wildwood, along Pleasant Valley Road, 1.2 miles north of its junction with CA-20 433 Comment
  UCR234586  Gnaphalium canescens subsp. thermale George K. Helmkamp, E. A. Helmkamp 2010-8-26 16832 Nevada Northern Sierra Nevada Mountains, 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
  UCR234588  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2010-8-26 16834 Nevada Northern Sierra Nevada Mountains, 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
  UCR234596  Navarretia tagetina George K. Helmkamp, E. A. Helmkamp 2011-6-2 17434 Nevada Northern Sierra Nevada Mountains Foothills, Lake Wildwood, along Pleasant Valley Road, 1.2 miles north of its junction with CA-20 433 Comment
  UCR234598  Lomatium marginatum var. marginatum George K. Helmkamp, E. A. Helmkamp 2011-6-2 17429 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 3.3 miles west of its junction with CA-49 in Grass Valley 627 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
  UCR237365  Coreopsis lanceolata George K. Helmkamp, E. A. Helmkamp 2012-6-13 19199 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
  UCR237374  Spergularia villosa George K. Helmkamp, E. A. Helmkamp 2012-6-13 19170 Nevada Northern Sierra Nevada Mountains Foothills, Washington Road, 3.6 miles north of its junction with CA-20 1006 Comment
  UCR237375  Tellima grandiflora George K. Helmkamp, E. A. Helmkamp 2012-6-13 19188 Nevada Northern Sierra Nevada Mountains Foothills, Washington Road, 5.6 miles north of its junction with CA-20 and along Washington Creek 787 Comment
  UCR237595  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2012-4-21 18824 Nevada Northern Sierra Nevada Mountains Foothills, McCourtney Road, 0.4 mile east of its junction with Perimeter Rd., 14.5 mi. NW (338 deg. ) of Auburn 407 Comment
  UCR240973  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2012-10-9 19993 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
  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
  UCR241749  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2012-9-25 19925 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 1.2 miles north of CA-20, N of I-80 between Grass Valley and Truckee 1427 Comment
  UCR242556  Castilleja lacera George K. Helmkamp, E. A. Helmkamp 2011-6-2 17424 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 1.5 miles west of its junction with CA-49 in Grass Valley 727 Comment
  UCR242558  Navarretia intertexta subsp. intertexta George K. Helmkamp, E. A. Helmkamp 2011-6-2 17423 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 1.5 miles west of its junction with CA-49 in Grass Valley 727 Comment
  UCR247265  Perideridia parishii subsp. latifolia George K. Helmkamp, E. A. Helmkamp 2007-7-27 12600 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
  UCR249959  Cerastium glomeratum George K. Helmkamp, Elizabeth Helmkamp 2013-4-13 20303 Nevada Northern Sierra Nevada Mountains Foothills, Magnolia Road, 3.0 miles east of its junction with CA-49 495 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
  UCR253084  Trifolium fragiferum George K. Helmkamp, Elizabeth Helmkamp 2013-8-7 22123 Nevada Sierra Nevada Mountains Foothills, junction of Table Meadow Road and Combie Road, SE of Higgins Corner 448 Comment
  UCR253505  Bromus sterilis George K. Helmkamp 2014-3-11 22541 Nevada Sierra Nevada Mountains Foothills, along Wolf Road, 0.1 mile north of its junction with Matthew Lane, NW of Higgins Corner 413 Comment
  UCR256662  Bromus suksdorfii George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20734 Nevada Northern Sierra Nevada Mountains, along Hwy CA-20, 1.6 miles northeast of Pine Flat Way, north of Scotts Flat Reservoir 1189 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
  UCR257813  Achillea millefolium George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19480 Nevada Northern Sierra Nevada Mountains, Stampede Meadows Road, c. 0.65 mile south of the Sierra County line 1738 Comment
  SEINET272177  Galium angustifolium G. K. Helmkamp, E. A. Helmkamp 1997-4-24 1655 Orange Cleveland National Forest ; Cleveland National Forest. 1.6 mil. SE of Ortega Hwy (CA-74) on Rd. 7-S14. UTM 10km cell: MH-5E 1N. San Juan Hot Sprin 549 Comment
  CAS-BOT-BC220475  Monardella sheltonii G. 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
  CAS-BOT-BC263231  Vicia G. K. Helmkamp; E. A. Helmkamp 2007-5-18 12034 Placer Northern Sierra Nevada Mountains Foothills: Mosquito Ridge Road near the crossing of the North Fork of the West Fork of the American River; 9.5 miles southeast of Foresthill 439 Comment
  CAS-BOT-BC434224  Lupinus albicaulis George K. Helmkamp; Mary Alice Barnes 2013-5-3 20460 Placer Foothills, northern Sierra Nevada Mountains: SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road. 974 Comment
  CAS-BOT-BC438831  Claytonia parviflora subsp. parviflora George K. Helmkamp; Mary Alice Barnes 2013-5-3 20476 Placer Foothills, northern Sierra Nevada Mountains: Mosquito Ridge Road, 1.1 miles south of Forest Hill Road. 962 Comment
  CAS-BOT-BC438833  Castilleja applegatei subsp. pinetorum George K. Helmkamp; Mary Alice Barnes 2013-5-3 20494 Placer Northern Sierra Nevada Mountains Foothills: Mosquito Ridge Road at the north side of the bridge over West Fork of North Fork American River, 5.2 mi. east (87 deg. ) of Forest Hill. 422 Comment
  CAS-BOT-BC518712  Castilleja applegatei subsp. pinetorum George K. Helmkamp; E. A. Helmkamp 2012-6-19 19212 Placer Northern Sierra Nevada Mountains Foothills: Mosquite Ridge Rd, 2.7 mi S of jct with Foresthill Rd 820 Comment
  RSA0035675  Vicia sativa subsp. nigra George K. Helmkamp, Mary Alice Barnes 2013-4-18 20343 Placer Yankee Jim Road, 0.9 mile east of its junction with Canyon Way, 4.4 miles SE (167 ) of Colfax 561 Comment
  RSA0037372  Keckiella breviflora subsp. breviflora George K. Helmkamp, Mary Alice Barnes 2013-5-3 20503 Placer Mosquito Ridge Road at the north side of the bridge over West Fork of North Fork American River, 5.2 mi. east (87 ) of Forest Hill 422 Comment
  RSA0047750  Nemophila heterophylla George K. Helmkamp, Mary Alice Barnes 2013-4-18 20374 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
  RSA0115437  Salix lasiolepis George K. Helmkamp, Elizabeth Helmkamp 2014-2-22 22533 Placer Sierra Nevada Mountains Foothills: North Auburn, corner of Bell Road and Olympic Way, 0.7 mi. west of CA-49. 433 Comment
  RSA751264  Hypericum concinnum George K. Helmkamp, E. A. Helmkamp 2008-8-20 14033 Placer Soda Springs Road, 1.9 miles south of its junction with Donner Pass Road and beside (completely dry) Serena Creek 2107 Comment
  RSA751290  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2008-8-20 14030 Placer Soda Springs Road, 1.9 miles south of its junction with Donner Pass Road and beside (completely dry) Serena Creek 2107 Comment
  RSA755303  Centaurea maculosa George K. Helmkamp, E. A. Helmkamp 2009-8-12 15421 Placer Forest Hill road, 14.0 miles northeast of the city of Foresthill 1564 Comment
  RSA782369  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2010-4-23 15907 Placer along Salmon Falls Road, at Miners Valley Rd., 4.5 miles south of junction with CA-49 at Pilot Hill 287 Comment
  RSA782547  Ceanothus integerrimus George K. Helmkamp, Amy Barnes 2009-7-12 15184 Placer Along Foresthill Road 10.3 miles northeast of the town of Foresthill 1370 Comment
  RSA785458  Collinsia tinctoria George K. Helmkamp, E. A. Helmkamp 2010-6-26 16369 Placer junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  SD237451  Trifolium dubium G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15928 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River (Pilot Hill 7.5'Q) 156 Comment
  SD237562  Eriogonum nudum var. oblongifolium G. K. Helmkamp, Amy Barnes 2009-7-12 15182 Placer Sierra Nevada Mountains Foothills: along Foresthill Road 10.3 miles northeast of the town of Foresthill (Michigan Bluff 7.5'Q) 1370 Comment
  SD240858  Erigeron inornatus var. inornatus G. K. Helmkamp, E. A. Helmkamp 2007-8-1 12645 Placer Northern Sierra Nevada Mountains: Donner Pass Road between Donner and Norden, about 0.2 mile east of the Nevada Co. border. 2150 Comment
  SD240933  Plagiobothrys undulatus George K Helmkamp, E. A. Helmkamp 2011-5-12 17255 Placer Southern Sacramento Valley: south of Lincoln along Athens Ave., 1.6 miles east of Fiddyment Road, 0.6 mile west of Industrual Ave. (Roseville 7.5'Q) 41 Comment
  SD241177  Galium murale George K. Helmkamp, E. A. Helmkamp 2010-4-17 15881 Placer Sierra Nevada Mountains Foothills: Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill (Pilot Hill 7.5'Q) 313 Comment
  SD243045  Calochortus leichtlinii George K. Helmkamp, E. A. Helmkamp 2010-7-28 16672 Placer Northern Sierra Nevada Mountains: Soda Springs Road, 0.3 mile north of its junction with Forest Hill Road at Robinson Flat. 2024 Comment
  SD243075  Centaurea stoebe subsp. micranthos George K. Helmkamp, E. A. Helmkamp 2011-8-26 18159 Placer Northern Sierra Nevada Mountains Foothills: Forest Hill Road, 3.5 miles east of its junction with Mesquite Road in the city of Foresthill (Michigan Bluff 7.5'Q) 1402 Comment
  SD243152  Geranium molle George K. Helmkamp, E. A. Helmkamap 2011-4-10 17135 Placer Sacramento Valley: east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road. 98 Comment
  SD243200  Sanguisorba officinalis George K. Helmkamp, E. A. Helmkamp 2010-7-28 16640 Placer Northern Sierra Nevada Mountains: Forest Route 13 (American Hill Road), 1.8 miles south of the junction with Forest Hill Road. 1566 Comment
  SD247474  Leptosiphon harknessii George K. Helmkamp, E. A. Helmkamp 2012-6-19 19235 Placer Northern Sierra Nevada Mountains: Foresthill Road, 6.9 miles east of its junction with Devil's Thumb Road. 1972 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
  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
  SEINET11265983  Gilia leptalea subsp. leptalea George 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 (Duncan Peak 7.5' Q.); 0 2039 Comment
  SEINET13203264 Image available Trifolium incarnatum George K. Helmkamp, Amy Barnes 2013-1 20233 Placer Eastern Sacramento Valley: NW edge of Sheridan, new section of Riosa Road, connecting new CA-65 with old CA-65 (Sheridan 7.5' Q.) 43 Comment
  SEINET2441545  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2009-4-22 14569 Placer Sierra Nevada Mountains Foothills: Rucky Chuck Rd. (dirt) 1.2 miles southeast of Forest Hill Road (Greenwood 7.5' Q.). 448 Comment
  SEINET2443005  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2009-8-12 15455 Placer Northern Sierra Nevada Mountains. Forest Hill Road, 21.7 miles northeast of the city of Foresthill.; 0 1701 Comment
  SEINET3271586 Image available Agrostis capillaris George K. Helmkamp, E. A. Helmkamp 2009-7-16 15212 Placer Sierra Nevada Mountains; Forest Hill Road, 24.6 miles northeast of the city of Foresthill, near Ford Point 1698 Comment
  SEINET3411987 Image available Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 2012-3-31 18645 Placer Sacramento Valley: along CA-193, 0.1 mile W of its junction with Sierra College Blvd. 88 Comment
  SEINET3440030 Image available Polypodium hesperium George K. Helmkamp, E. A. Helmkamp 2012-5-5 18924 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
  SEINET4560767  Pedicularis semibarbata George K. Helmkamp, E. A. Helmkamp 2010-1 16659 Placer Northern Sierra Nevada Mountains: Forest Hill Road, 22 miles northeast of the city of Foresthill. 2041 Comment
  SEINET4560769  Penstemon azureus George K. Helmkamp, E. A. Helmkamp 2010-1 16670 Placer Northern Sierra Nevada Mountains: Forest Hill Road, 1.6 miles west of the junction with Soda Springs Road at Robinson Flat. 2040 Comment
  SEINET4560809  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2010-1 17027 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 reservior dam 1180 Comment
  SEINET4560834  Rosa californica George K. Helmkamp, E. A. Helmkamp 2010-1 17026 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
  SEINET4691428  Agrostis idahoensis George K. Helmkamp, E. A. Helmkamp 2010-1 16380 Placer Sierra Nevada Mountains Foothills: junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax. 616 Comment
  SEINET4691681  Trifolium depauperatum var. depauperatum George K. Helmkamp, E. A. Helmkamp 2011-1 17154 Placer Sacramento Valley: along Riosa Road at the east edge of the village of Sheridan. 41 Comment
  SEINET4691687  Apocynum androsaemifolium George K. Helmkamp, E. A. Helmkamp 2010-1 16785 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
  SEINET4691689  Galium sparsiflorum subsp. sparsiflorum George K. Helmkamp, E. A. Helmkamp 2010-1 16781 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
  SEINET9262029  Prunella vulgaris subsp. lanceolata George K. Helmkamp, Elizabeth Helmkamp 2013-1 20804 Placer Northern Sierra Nevada Mountains Foothills; Yankee Jims Road, 3.6 miles northwest of its junction with Forest Hill Road (Foresthill 7.5 Q) 768 Comment
  UCD109113  Vicia villosa subsp. varia G. 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
  UCD110375  Hypericum perforatum subsp. perforatum G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-14 10709 Placer Northern Sierra Nevada foothills: 0.2 mile north of Forest Hill Road on unnamed road to Lake Clementine (general area northeast of Auburn on Forest Hill Divide). 488 Comment
  UCD113386  Rosa bridgesii G. K. Helmkamp; E. A. Helmkamp 2007-5-23 12052 Placer Northern Sierra Nevada Mountains. Along Forest Hill Road, 2.3 miles northeast of Foresthill. 1116 Comment
  UCD117710  Gilia capitata subsp. mediomontana G. 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
  UCD99397  Stellaria media G. K. Helmkamp; E. A. Helmkamp 2006-2-9 10041 Placer English Colony Way (Humphrey Road) at Sierra College Blvd near Clover Valley Creek; SE of Lincoln. 183 Comment
  UCR111003  Hypericum anagalloides George K. Helmkamp, E. A. Helmkamp 1999-6-30 5108 Placer Northern Sierra Nevadas, Soda Springs Road 0.9 mi south of Donner Pass Road, approaching Ice Lakes. 2104 Comment
  UCR111007  Lupinus angustiflorus George K. Helmkamp, E. A. Helmkamp 1999-6-30 5094 Placer Northern Sierra Nevadas, Soda Springs Road 0.9 mi south of Donner Pass Road, approaching Ice Lakes. 2104 Comment
  UCR120238  Trifolium hybridum George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-30 5059 Placer Northern Sierra Nevada Range, Truckee River, c. 4 mi upstream from Lake Tahoe; 1.1 mi south of Squaw Valley Road 1860 Comment
  UCR120242  Sidalcea malviflora subsp. asprella George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5032 Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR170815  Pseudognaphalium canescens subsp. thermale George K. Helmkamp, E. A. Helmkamp 2005-9-30 9955 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR171335  Lepidium virginicum var. virginicum George K. Helmkamp, E. A. Helmkamp 2005-10-1 9979 Placer Northern Sierra Nevada Mtns., NW of Lake Tahoe; Junction of Bear Creek Dr. and Big John Road (c. 2.2 miles west of Calif. Highway 89 and just south of Alpine Meadows Road) 2015 Comment
  UCR171353  Arctostaphylos manzanita subsp. manzanita George K. Helmkamp, E. A. Helmkamp 2005-10-1 9991 Placer Northern Sierra Nevada Mtns., NW of Lake Tahoe; Junction of Bear Creek Dr. and Big John Road (c. 2.2 miles west of Calif. Highway 89 and just south of Alpine Meadows Road) 2015 Comment
  UCR171402  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2005-10-1 9970 Placer Northern Sierra Nevada Mtns., NW of Lake Tahoe; Junction of Bear Creek Dr. and Big John Road (c. 2.2 miles west of Calif. Highway 89 and just south of Alpine Meadows Road) 2015 Comment
  UCR173253  Torilis arvensis George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10452 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
  UCR173257  Potentilla glandulosa George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10445 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
  UCR176265  Cichorium intybus George K. Helmkamp, E. A. Helmkamp 2006-8-11 11208 Placer Northern Sierra Nevada Mtns foothills, along Forest Hill Rd., 1.0 mile north of Forest Hill 1037 Comment
  UCR177015  Sanicula crassicaulis George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10455 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
  UCR177232  Trifolium George K. Helmkamp, E. A. Helmkamp 2005-9-30 9966 Placer Northern Sierra Nevada Mtns., c. 3.5 mi NW of Lake Tahoe; Along the Truckee River and Calif. Highway 89, 0.1 mi N of Alpine Meadows Road 1902 Comment
  UCR190136  Silene vulgaris George K. Helmkamp, E. A. Helmkamp 2007-9-14 12953 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road 0.4 mile east of Foresthill 942 Comment
  UCR190152  Epilobium angustifolium subsp. circumvagum George K. Helmkamp, E. A. Helmkamp 2007-8-1 12641 Placer Northern Sierra Nevada Mountains, Donner Pass Road between Donner and Norden, about 0.2 mile east of the Nevada Co. border 2151 Comment
  UCR191056  Muilla maritima George K. Helmkamp, E. A. Helmkamp 2007-5-23 12048 Placer Northern Sierra Nevada Mountains Foothills, along Forest Hill Road, 2.3 miles northeast of Foresthill 1116 Comment
  UCR191058  Viola lobata var. lobata George K. Helmkamp, E. A. Helmkamp 2007-5-23 12050 Placer Northern Sierra Nevada Mountains Foothills, along Forest Hill Road, 2.3 miles northeast of Foresthill 1116 Comment
  UCR191105  Polygonum phytolaccifolium George K. Helmkamp, E. A. Helmkamp 2007-6-12 12326 Placer Northern Sierra Nevada Mountains, Lake Spaulding Road just north of its junction with Hwy CA-20 1610 Comment
  UCR195170  Dichelostemma multiflorum George K. Helmkamp, E. A. Helmkamp 2007-5-18 12006 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 2.8 miles southeast of Foresthill 814 Comment
  UCR198419  Plagiobothrys greenei George K. Helmkamp, E. A. Helmkamp 2008-4-17 13288 Placer Sacramento Valley, Ranch House Road, 0.2 mile southeast of Sheridan 37 Comment
  UCR201516  Cornus sericea subsp. sericea George K. Helmkamp, E. A. Helmkamp 2008-8-20 14020 Placer Northern Sierra Nevada Mountains, Rainbow exit south from US-80 and east of Big Bend, adjacent to the South Yuba River 1811 Comment
  UCR201518  Sidalcea malviflora subsp. asprella George K. Helmkamp, E. A. Helmkamp 2008-8-20 14017 Placer Northern Sierra Nevada Mountains, Rainbow exit south from US-80 and east of Big Bend, adjacent to the South Yuba River 1811 Comment
  UCR201929  Prunus emarginata George K. Helmkamp, E. A. Helmkamp 2008-8-20 14028 Placer Northern Sierra Nevada Mountains, Donner Pass Road on the west side of Donner Pass and east of Norden 2149 Comment
  UCR206875  Pseudognaphalium canescens subsp. thermale George K. Helmkamp, E. A. Helmkamp 2009-7-16 15199 Placer Sierra Nevada Mountains, Foresthill Road, 20.3 miles northeast of the city of Foresthill 1704 Comment
  UCR207103  Helianthella californica var. nevadensis George K. Helmkamp, E. A. Helmkamp 2009-7-16 15223 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
  UCR207107  Potentilla glandulosa subsp. ashlandica George K. Helmkamp, E. A. Helmkamp 2009-7-16 15237 Placer Sierra Nevada Mountains, Robinson Flat, a camping and day-use area at the junction of Forest Hill and Soda Springs Roads 2107 Comment
  UCR207125  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2009-7-16 15222 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
  UCR207851  Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 2009-4-22 14557 Placer Sierra Nevada Mountains Foothills, Forest Hill Road 0.8 mile east of its junction with CA-49 and the North and Middle Forks of the American River 277 Comment
  UCR207856  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2009-4-22 14565 Placer Sierra Nevada Mountains Foothills, Forest Hill Road 1.9 mile east of its junction with CA-49 and the North and Middle Forks of the American River 399 Comment
  UCR207858  Gilia capitata subsp. mediomontana George K. Helmkamp, E. A. Helmkamp 2009-4-22 14563 Placer Sierra Nevada Mountains Foothills, Forest Hill Road 1.9 mile east of its junction with CA-49 and the North and Middle Forks of the American River 399 Comment
  UCR208552  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2009-5-11 14667 Placer Sierra Nevada Mountains Foothills, Michigan Bluff Road, 2.7 miles south of its junction with Forest Hill Road. c. 0.15 mi. NNW of site of Michigan Bluff 1101 Comment
  UCR208603  Eschscholzia caespitosa George K. Helmkamp, E. A. Helmkamp 2009-5-7 14624 Placer Sierra Nevada Mountains Foothills, Oxbow Road, 2.0 miles south of its junction with Mosquito Ridge Road; north edge of Oxbow Reservoir 402 Comment
  UCR208607  Viola purpurea subsp. integrifolia George K. Helmkamp, E. A. Helmkamp 2009-5-11 14655 Placer Sierra Nevada Mountains Foothills, junction of Forest Hill Road and Chicken Hawk Road, northeast of the city of Foresthill 1338 Comment
  UCR215974  Bromus orcuttianus George K. Helmkamp, Amy Barnes 2009-7-12 15177 Placer Sierra Nevada Mountains Foothills, along Foresthill Road, 5.7 miles northeast of the city of Foresthill 1230 Comment
  UCR215980  Ceanothus integerrimus George K. Helmkamp, Amy Barnes 2009-7-12 15184 Placer Sierra Nevada Mountains, along Foresthill Road 10.3 miles northeast of the town of Foresthill 1370 Comment
  UCR216030  Nama lobbii George K. Helmkamp, Amy Barnes 2009-7-12 15186 Placer Sierra Nevada Mountains, along Foresthill Road 10.3 miles northeast of the town of Foresthill 1370 Comment
  UCR218124  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2010-6-26 16393 Placer Sierra Nevada Mountains Foothills, Yankee Jim's Road in Bunch Canyon, 0.5 mile southeast of its junction with Canyon Way 591 Comment
  UCR218125  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2010-6-26 16398 Placer Sierra Nevada Mountains Foothills, Yankee Jim's Road in Bunch Canyon, 0.5 mile southeast of its junction with Canyon Way 591 Comment
  UCR218135  Clarkia rhomboidea George K. Helmkamp, E. A. Helmkamp 2010-6-26 16403 Placer Sierra Nevada Mountains Foothills, Yankee Jim's Road in Bunch Canyon, 0.5 mile southeast of its junction with Canyon Way 591 Comment
  UCR218217  Bromus George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16435 Placer Sierra Nevada Mountains Foothills, Iowa Hill Road, 1.9 miles southeast of its junction with Canyon Way in Colfax 415 Comment
  UCR231842  Epilobium angustifolium subsp. circumvagum George K. Helmkamp, E. A. Helmkamp 2010-8-14 16790 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
  UCR232219  Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2011-5-6 17220 Placer Eastern Edge of Sacramento Valley, Camp Far West Road, 0.1 mile west of its junction with McCourtney Road, c. 6.3 mi. NE (67 deg. ) of Wheatland 58 Comment
  UCR232232  Gayophytum heterozygum George K. Helmkamp, E. A. Helmkamp 2010-7-28 16646 Placer Northern Sierra Nevada Mountains, Forest Hill Road at Hidden Treasure Road, 10.4 miles northeast of the city of Foresthill 1384 Comment
  UCR232625  Calystegia occidentalis subsp. occidentalis George K. Helmkamp, E. A. Helmkamp 2010-7-28 16643 Placer Northern Sierra Nevada Mountains, Forest Route 13 (American Hill Road), 1.8 miles south of the junction with Forest Hill Road 1567 Comment
  UCR233185B  Centaurium muehlenbergii George K. Helmkamp, E. A. Helmkamp 2011-7-9 17672 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim Road, 1.4 miles northwest of the city of Foresthill 764 Comment
  UCR233271  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2011-7-9 17678 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim Road, 1.4 miles northwest of the city of Foresthill 764 Comment
  UCR233276  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2011-7-9 17686 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 10.8 miles southeast of its junction with Foresthill Road 503 Comment
  UCR233278  Achillea millefolium George K. Helmkamp, E. A. Helmkamp 2011-7-9 17684 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 1.6 miles southeast of its junction with Foresthill Road at Foresthill 883 Comment
  UCR233382  Phacelia hastata var. hastata George K. Helmkamp, E. A. Helmkamp 2011-8-26 18166 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 26.1 miles east of its junction with Mesquite Road in the city of Foresthill 2020 Comment
  UCR233392  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2011-8-26 18168 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 26.1 miles east of its junction with Mesquite Road in the city of Foresthill 2020 Comment
  UCR234214  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2011-4-10 17172 Placer Sacramento Valley, along Riosa Road, 2.3 miles east of Sheridan 43 Comment
  UCR240899  Castilleja applegatei subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2012-6-19 19212 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 2.7 miles south of its junction with Foresthill Road 820 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
  UCR240963  Agrostis oregonensis George K. Helmkamp, E. A. Helmkamp 2012-9-25 19914 Placer Northern Sierra Nevada Mountains, Blue Canyon Road south of I-80 and 0.1 mile north of the Southern Pacific Railroad crossing 1451 Comment
  UCR240967  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2012-9-25 19919 Placer Northern Sierra Nevada Mountains, Laing Road, parallel to I-80; 0.2 mile east of its junction with Emigrant Gap Road 1611 Comment
  UCR241763  Dysphania botrys George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19798 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
  UCR242332  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2010-7-28 16657 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 22 miles northeast of the city of Foresthill 2041 Comment
  UCR249529  Lepidium strictum George K. Helmkamp, Amy Barnes 2013-3-28 20288 Placer Eastern Sacramento Valley, northwest side of junction of Riosa Road and Andressen Road, northeast of Sheridan 36 Comment
  UCR249539  Trifolium dubium George K. Helmkamp, Amy Barnes 2013-3-28 20291 Placer Eastern Sacramento Valley, northwest side of junction of Riosa Road and Andressen Road, northeast of Sheridan 36 Comment
  UCR249590  Eriophyllum lanatum var. achilleoides George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20809 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 Comment
  UCR249594  Smilacina racemosa George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20818 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 Comment
  UCR250164  Eriophyllum lanatum var. achilleoides George K. Helmkamp, Mary Alice Barnes 2013-5-3 20479 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 4.7 miles south of Forest Hill Road, 1.8 mi. east (92 deg. ) of Foresthill 829 Comment
  UCR250174  Sidalcea malviflora subsp. asprella George K. Helmkamp, Mary Alice Barnes 2013-5-3 20463 Placer Foothills, northern Sierra Nevada Mountains, SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road 974 Comment
  UCR250341  Pentagramma pallida George K. Helmkamp, Mary Alice Barnes 2013-4-18 20368 Placer Northern Sierra Nevada Mtns Foothills, Yankee Jim Road, 2.4 miles east of its junction with Canyon Way, 2.5 mi. ENE (78 deg. ) of Weimar 512 Comment
  UCR250351  Petrorhagia dubia George K. Helmkamp, Mary Alice Barnes 2013-4-18 20357 Placer Northern Sierra Nevada Mtns Foothills, Yankee Jim Road, 2.4 miles east of its junction with Canyon Way, 2.5 mi. ENE (78 deg. ) of Weimar 512 Comment
  UCR250902  Mimulus kelloggii George K. Helmkamp, Mary Alice Barnes 2013-4-18 20346 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
  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
  UCR253533  Claytonia parviflora subsp. grandiflora George K. Helmkamp, Amy Barnes 2014-4-23 22797 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
  UCR253809  Cyperus eragrostis George K. Helmkamp, Elizabeth Helmkamp 2012-10-30 20106 Placer Sacramento Valley, north of William Lane on an unnamed levee road to Markham Ravine 35 Comment
  UCR253811  Epilobium brachycarpum George K. Helmkamp, Elizabeth Helmkamp 2012-10-30 20104 Placer Sacramento Valley, north of William Lane on an unnamed levee road to Markham Ravine 35 Comment
  UCR253816  Sorghum halepense George K. Helmkamp, Elizabeth Helmkamp 2012-10-30 20099 Placer Sacramento Valley, South Dowd Road, 0.1 mile south of its junction with Moore Road, southwest of Lincoln 34 Comment
  UCR257603  Trifolium dubium George K. Helmkamp, Amy Barnes 2014-3-21 22636 Placer Sacramento Valley, Riosa Road at the east side of its junction with CA-65, just west of Sheridan 33 Comment
  UCR257625  Deschampsia cespitosa subsp. cespitosa George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19527 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
  UCR257635  Epilobium angustifolium George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19537 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
  UCR257735  Apocynum androsaemifolium George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19515 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
  UCR258125  Medicago orbicularis George K. Helmkamp, Amy Barnes 2014-3-21 22647 Placer Sacramento Valley, Sheridan, Riosa Road at the west side of its junction with old CA-65 33 Comment
  UCR258217  Amaranthus albus George K. Helmkamp, Elizabeth Helmkamp 2012-10-20 20054 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
  UCR259862  Physalis lancifolia George K. Helmkamp, Elizabeth Helmkamp 2013-11-2 22461 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
  UCR259872  Sorghum halepense George K. Helmkamp, Elizabeth Helmkamp 2013-11-2 22465 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
  SEINET7249132  Lamium amplexicaule George K. Helmkamp, Mary Alice Barnes 2013-1 Placer Comment
  SEINET7249204  Agrostis exarata George K. Helmkamp, E. A. Helmkamp 2012-1 Placer 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
  UCR123999  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2001-7-6 6857 Plumas Sierra Nevada Mountains, Calif. Hwy 89, ESE of Lake Almanor at Crescent Mills 976 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
  CLARK-A1045-126  Lepidium dictyotum George K. Helmkamp 1977-3-20 Riverside Deep Canyon dry wash of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-1309  Heterocodon rariflorum George K. Helmkamp 1979-6-6 Riverside Wolf Valley Highway S16 south of Murrieta (road to Pala), mile 5; Pechanga 7.5'Q Comment
  CLARK-A1045-137  Euphorbia polycarpa George K. Helmkamp 1978-4-1 Riverside Deep Canyon by University of California Reserve System Boyd research station; Palm Desert 15'Q Comment
  CLARK-A1045-139  Pectocarya platycarpa 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-A1045-153  Plagiobothrys undulatus George K. Helmkamp 1978-6-1 Riverside Santa Ana Mountains vernal pools near origin of creek; Wildomar 7.5'Q Comment
  CLARK-A1045-175  Muilla maritima George K. Helmkamp 1979-5-5 Riverside Santa Ana Mountains vernal pool; Wildomar 7.5' Q Comment
  CLARK-A1045-183  Phacelia cicutaria subsp. hispida George K. Helmkamp 1979-5-5 Riverside Santa Ana Mountains vernal pool; Wildomar 7.5'Q Comment
  CLARK-A1045-208  Cryptantha angustifolia George K. Helmkamp 1979-4-18 Riverside Indio Hills dry wash; ; Lost Horse Mtn. 15'Q 304 Comment
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Feb 13 2019
  CLARK-A1045-218  Pleurocoronis pluriseta George K. Helmkamp 1979-4-18 Riverside Little San Bernardino Mountains 3.5 miles north of Dillon Road; wash; Lost Horse Mtn. 15'Q 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-A1045-311  Stylocline gnaphaloides George K. Helmkamp 1978-6-1 #2 Riverside Santa Ana Mountains off of De Luz Road near [southeast of] Mesa de Burro; ; Murrieta 7.5'Q 487 Comment
  CLARK-A1045-323  Baccharis sergiloides George K. Helmkamp 1977-3-20 Riverside Cabazon edge of dry wash south of Cabazon; ; Cabazon 7.5'Q Comment
  CLARK-A1045-335  Mimulus diffusus George K. Helmkamp 1978-5-2 Riverside Bautista Canyon a burned area beside Bautista Road; Hemet 15'Q Comment
  CLARK-A1045-67  Clarkia similis George K. Helmkamp 1978-5-18 Riverside San Jacinto Mountains along State Highway 243 [vicinity of Mountain Center?]; in chaparral; ; Idyllwild 15'Q 1219 Comment
  CLARK-A1045-69  Orobanche fasciculata George K. Helmkamp 1978-5-18 Riverside San Jacinto Mountains near Kenworthy Forest Station; ; ; southeast 1/4 Idyllwild 15'Q; Butterfly Peak 7.5' Q 1371 Comment
  HSC78584  Chaenactis carphoclinia var. carphoclinia G. K. Helmkamp 1983-3-24 38319 Riverside Little Chuckwalla Mtns., N base, 1.5 mi. E of Graham Pass Rd 336 Comment
  RSA614499  Hyptis emoryi George K. Helmkamp 1998-2-5 2649 Riverside Palm Springs, 1.1 mi. W of CA Hwy 111 on Tramway Rd. 335 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
  SD143703  Lycium andersonii G. K. Helmkamp, E. A. Helmkamp 1998-2-18 2693 Riverside Colorado Desert: Midland Road., 3.8 mi. SE of Midland, Little Maria Mts. sandy wash Comment
  SD224839  Encelia farinosa var. phenicodonta G. K. Helmkamp 1998-4-4 3134 Riverside Southern Mojave Desert: junction of CA hwy 62 (Twentynine Palms hwy) & CA hwy 177 (Desert Center-Rice Rd) 456 Comment
  SD225012  Mentzelia involucrata G. K. Helmkamp, E. A. Helmkamp 1998-2-5 2672 Riverside Little San Bernardino Mtns, 3.2 mi N of jct of Thousand Palms Canyon Rd & Dillon Rd. 456 Comment
  SD225013  Mentzelia obscura G. K. Helmkamp 1998-4-4 3145 Riverside Southern Mojave Desert: junction of CA hwy 62 (Twentynine Palms hwy) & CA hwy 177 (Desert Center-Rice Rd.) 456 Comment
  SD225031  Mirabilis laevis var. villosa G. K. Helmkamp 1998-4-4 3131 Riverside Southern Mojave Desert: junction of CA hwy 62 (Twentynine Palms hwy) & CA hwy 177 (Desert Center-Rice Rd). 456 Comment
  SEINET238555 Image available Sarcodes sanguinea George K. Helmkamp 1998-6-27 4128 Riverside Santa Rosa Mtns.: 9 mi SE of Hwy 74 along Santa Rosa Mtn Rd. in vicinity of Santa Rosa Spring. 2232 Comment
  SEINET238557  Lathyrus vestitus George K. Helmkamp 1998-6-27 4119 Riverside Santa Rosa Mtns.: 5.8 mi SE of Hwy 74 along Santa Rosa Mtn Rd. below Mountain Home Spring. 1799 Comment
  SEINET238564  Penstemon spectabilis var. spectabilis George K. Helmkamp 1998-6-27 4085 Riverside Santa Rosa Mtns.: 3.3 mi S of Hwy 74 along Santa Rosa Mtn Rd. in vicinity of an unnamed spring. 1585 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
  SEINET959099  Circaea alpina G. K. Helmkamp, E. A. Helmkamp 2005-1 6877 Riverside Northern Sierra Nevada foothills: Silver Fork, 2.1 mi. west of Kyburz along US highway 50 (Kyburz 7.5Q) 1204 Comment
  UCR102949  Ditaxis californica George K. Helmkamp 1998-4-4 3181 Riverside Sonoran (Colorado) Desert, 2.3 mi. north of Hwy I-10 on Eagle Mtn Rd. 274 Comment
  UCR103305  Cryptantha barbigera George K. Helmkamp 1998-4-4 3150 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR103555  Brandegea bigelovii George K. Helmkamp, E. A. Helmkamp 1998-1-17 2530 Riverside Coachella Valley, Bob Hope Drive, 0.9 mi south of Hwy I-10 43 Comment
  UCR104011  Ditaxis neomexicana George K. Helmkamp, E. A. Helmkamp 1998-2-5 2684 Riverside Little San Bernardino Mtns., 3.2 mi. north of junction of Thousand Palms Canyon Road and Dillon Road. 457 Comment
  UCR104016  Encelia frutescens George K. Helmkamp 1998-4-4 3132 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR104018  Rafinesquia neomexicana George K. Helmkamp 1998-4-4 3141 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR104829  Euphorbia polycarpa George K. Helmkamp, E. A. Helmkamp 1998-2-5 2664 Riverside Sonoran (Colorado) Desert, Indio Hills, 3 mi. east of Thousand Palms & 1.1 mi. N on Amity Rd. 101 Comment
  UCR104860  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 1998-2-18 2729 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR104874  Ambrosia dumosa George K. Helmkamp 1998-4-4 3148 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR104880  Muhlenbergia microsperma George K. Helmkamp, E. A. Helmkamp 1998-2-18 2724 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR107908  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 1997-1-8 1278 Riverside Sonoran (Colorado) Desert, Palm Springs. Lawn at El Cielo and Tahquitz-McCallum 152 Comment
  UCR110992  Arctostaphylos pringlei subsp. drupacea George K. Helmkamp 1998-6-27 4121 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
  UCR122529  Abronia villosa var. aurita George K. Helmkamp, E. A. Helmkamp 2001-5-20 6682 Riverside San Jacinto Mountains, Morris Ranch Rd., 2.1 mi NE of CA-74 1570 Comment
  UCR122539  Gilia ochroleuca subsp. exilis George K. Helmkamp, E. A. Helmkamp 2001-5-20 6668 Riverside San Jacinto Mtns., 0.3 mi NW of Keen Camp Summit along CA-74 1494 Comment
  UCR122564  Plagiobothrys collinus George K. Helmkamp, E. A. Helmkamp 1998-4-24 3375 Riverside San Jacinto Mountains, 0.1 mi east of the junction of Calif. Hwy 74 and Calif. Hwy 371, SE side of the mountains 1494 Comment
  UCR122570  Sesbania herbacea George K. Helmkamp, E. A. Helmkamp 2000-8-29 5984 Riverside Colorado Desert., South of Mecca, where Lincoln St. crosses the Whitewater River, about 0.5 mile from the Salton Sea -67 Comment
  UCR122584  Phoradendron villosum George K. Helmkamp 1995-11-16 119 Riverside San Jacinto Mtns, Along Calif. Hwy 243, 0.25-0.50 mi south of Bay Tree Spring (about 0.9 mi north of Lake Fulmor) 1616 Comment
  UCR30090  Eschscholzia parishii George K. Helmkamp 1983-4-5 483 2 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR30095  Nemacladus orientalis George K. Helmkamp 1983-4-5 483- 44 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR37614  Camissonia californica George K. Helmkamp 1984-5-2 D- 3 Riverside Little San Bernardino Mountains, Big Morongo Canyon, 3 - 3.5 miles below the caretaker's house at the Big Morongo Preserve 610 Comment
  UCR37676  Camissonia cardiophylla George K. Helmkamp 1984-5-5 E 6 Riverside Transverse Range, Little San Bernardino Mountains, Big Morongo Canyon, 4 road miles below the caretaker's house at the Big Morongo Preserve 549 Comment
  UCR37677  Filago depressa George K. Helmkamp 1984-5-5 E- 2 Riverside Transverse Range, Little San Bernardino Mountains, Big Morongo Canyon, 4 road miles below the caretaker's house at the Big Morongo Preserve 549 Comment
  UCR37678  Medicago sativa George K. Helmkamp 1984-5-2 D- 01 Riverside Little San Bernardino Mountains, Big Morongo Canyon, 3 - 3.5 miles below the caretaker's house at the Big Morongo Preserve 610 Comment
  UCR37679  Samolus parviflorus George K. Helmkamp 1984-5-2 D 22 Riverside Little San Bernardino Mountains, Big Morongo Canyon, 3 - 3.5 miles below the caretaker's house at the Big Morongo Preserve 610 Comment
  UCR85432  Stillingia spinulosa George K. Helmkamp 1994-4-26 88- 2 Riverside Western Colorado Desert, Indio Hills; north of the landfill on Edom Hill 213 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
  UCR89669  Tidestromia oblongifolia George K. Helmkamp 1994-3-10 42 22 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
  UCR91947  Ziziphus obtusifolia var. canescens George K. Helmkamp 1996-3-11 1003 Riverside Chuckwalla Mtns, Corn Springs 479 Comment
  UCR91949  Chenopodium murale George K. Helmkamp 1996-3-11 1001 Riverside Sonoran (Colorado) Desert, Colorado River Valley, 35th Avenue and California Hwy 78, 1.7 mi north of PaloVerde 72 Comment
  UCR91969  Phoradendron libocedri George K. Helmkamp, E. A. Helmkamp 1995-11-16 2- 2 Riverside San Jacinto Mtns., Along Hwy 243 at Lake Fulmor 1616 Comment
  UCR92486  Camissonia refracta George K. Helmkamp 1995-3-16 s.n. Riverside Sonoran (Colorado) Desert, Below Coxcomb Mtns., west of Rice Rd., 10.3 mi. NE of Desert Center 200 Comment
  UCR92487  Eriogonum thomasii George K. Helmkamp 1995-3-16 s.n. Riverside Sonoran (Colorado) Desert, Below Coxcomb Mtns., west of Rice Rd., 10.3 mi. NE of Desert Center 200 Comment
  UCR92488  Cryptantha maritima George K. Helmkamp 1995-3-16 s.n. Riverside Sonoran (Colorado) Desert, 5.6 mi NE of Desert Center on Rice Rd. 152 Comment
  UCR92489  Lotus tomentellus George K. Helmkamp 1995-3-16 s.n. Riverside Sonoran (Colorado) Desert, 5.6 mi NE of Desert Center on Rice Rd. 152 Comment
  SEINET2055879  Baileya pleniradiata G. K. Helmkamp, E. A. Helmkamp 2001-9-16 7174 Riverside Willcox Playa, east edge.: Blue Sky Road. O.2 mile nietheast of AZ 186 {southwest of Willcox} 1295 Comment
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May 3 2014
  JEPS119430  Holocarpha virgata subsp. virgata G. K. Helmkamp, E. A. Helmkamp 2011-11-19 18460 Sacramento Eastern Sacramento Valley, White Rock Road, 0.2 mile west of its junction with Placerville Road, 5.5 mi. SE (130 deg. ) of Folsom Comment
  RSA792720  Dittrichia graveolens George K. Helmkamp, E. A. Helmkamp 2011-11-19 18464 Sacramento Stonehouse Road 0.2 mile north of its junction with CA-16/Jackson Rd., between the road and Rancho Murieta Housing area 44 Comment
  SD197722  Brassica rapa G. K. Helmkamp, E. A. Helmkamp 2008-10-30 14287 Sacramento Southern Sacramento Valley, along Highway E13, 4.4 miles west of its junction with CA-99. 4 Comment
  SEINET7953068 Image available Andropogon virginicus var. virginicus George K. Helmkamp, E. A. Helmkamp 2007-9-9 12913 Sacramento Sacramento Valley; along Hwy CA-16, 0.8 mile west of the Amador County line 85 Comment
  UCD123405  Triphysaria eriantha subsp. eriantha G. K. Helmkamp; E. A. Helmkamp 2007-3-14 11619 Sacramento Sacramento Valley; edge of Sierra Nevada foothills: Latrobe Road at Michigan Bar Road, about 3.5 miles west of Latrobe and 0.3 miles west of the El Dorado County line. 146 Comment
  UCD133884  Lasthenia platycarpha G. K. Helmkamp; E. A. Helmkamp 2007-4-5 11739 Sacramento Eastern Sacramento Valley; along Hwy CA-104, 5.6 miles west of Ione. 66 Comment
  UCD133944  Layia chrysanthemoides G. K. Helmkamp; E. A. Helmkamp 2007-4-5 11736 Sacramento Eastern Sacramento Valley; along Hwy CA-104, 5.6 miles west of Ione. 66 Comment
  UCD139193  Dichelostemma capitatum subsp. capitatum G. K. Helmkamp; E. A. Helmkamp 2007-3-14 11630 Sacramento Sacramento Valley; edge of Sierra Nevada foothills: Latrobe Rd at Michigan Bar Rd, about 3.5 mi west of Latrobe and 0.3 mi W of the El Dorado County line. 110 Comment
  UCD150869  Lomatium caruifolium var. caruifolium G. K. Helmkamp; E. A. Helmkamp 2007-4-5 11738 Sacramento Eastern Sacramento Valley; along Hwy CA-104, 5.6 miles west of Ione. 66 Comment
  UCD95369  Eschscholzia lobbii G. K. Helmkamp; E. A. Helmkamp 2007-3-14 11634 Sacramento Sacramento Valley near the edge of Sierra Nevada Mountains; Latrobe Rd. about 5.7 miles west of Latrobe and 1.5 miles W of the El Dorado Co. line. 110 Comment
  UCR184380  Bromus diandrus George K. Helmkamp, E. A. Helmkamp 2007-3-14 11631 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
  UCR184384  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2007-3-14 11632 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
  UCR184825  Lomatium caruifolium var. denticulatum George K. Helmkamp, E. A. Helmkamp 2007-3-14 11623 Sacramento Sacramento Valley; edge of Sierra Nevada foothills, Latrobe Rd at Michigan Bar Rd, about 3.5 mi west of Latrobe and 0.3 mi west of the El Dorado County line 146 Comment
  UCR184830  Cardamine pensylvanica George K. Helmkamp, E. A. Helmkamp 2007-3-14 11625 Sacramento Sacramento Valley; edge of Sierra Nevada foothills, Latrobe Rd at Michigan Bar Rd, about 3.5 mi west of Latrobe and 0.3 mi west of the El Dorado County line 146 Comment
  UCR193459  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2007-9-9 12918 Sacramento Sacramento Valley, along Hwy CA-16, 0.8 mile west of the Amador County line 85 Comment
  UCR201559  Epilobium densiflorum George K. Helmkamp, E. A. Helmkamp 2008-10-2 14192 Sacramento Sacramento Valley, Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  UCR237461  Conium maculatum George K. Helmkamp, E. A. Helmkamp 2012-2-17 18556 Sacramento Sacramento Valley, along Dillard Road, 0.2 mile south of its junction with CA-16/Jackson Rd, SE of Sacramento 58 Comment
  UCR237565  Vulpia myuros var. myuros George K. Helmkamp, E. A. Helmkamp 2012-2-17 18554 Sacramento Sacramento Valley, Rancho Omochumnes, Indio Drive, 0.2 mile south of its junction with CA-16 (Jackson Rd.) at Latrobe Road 64 Comment
  UCR237575  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2012-3-3 18592 Sacramento Sacramento Delta/Valley, Twin Cities Road (Co. Rd. E-13) at Sourgrass Slough, NE of Locke 14 Comment
  UCR241169  Amaranthus albus George K. Helmkamp, E. A. Helmkamp 2012-10-3 19959 Sacramento Southeast Sacramento Valley, bike trail parking area at the south side of the American River, 0.6 mile west of Gold Country Road 27 Comment
  UCR253207  Triteleia laxa George K. Helmkamp, Amy Barnes 2014-4-7 22735 Sacramento Sacramento Valley, along CA-104/Twin Cities Road, WNW of Rancho Seco Nuclear Generating Station 56 Comment
  UCR253257  Festuca perennis George K. Helmkamp, Amy Barnes 2014-4-7 22725 Sacramento Sacramento Valley, Clay East Road, 1 mile east of its junction with CA-104 52 Comment
  UCR253544  Triphysaria eriantha subsp. eriantha George K. Helmkamp, Amy Barnes 2014-4-7 22700 Sacramento Sacramento Valley, along CA-104/Twin Cities Rd., 0.7 mile west of the Amador County line 63 Comment
  SBBG128873  Acacia dealbata G. K. Helmkamp, E. A. Helmkamp 2012-3-3 18587 Sacramento Sacramento Valley/Delta; Twin Cities Rd (Co Rd E-13), 0.1 mi NE of its juction with I-5 5 Comment
  UCR121599  Erysimum capitatum var. capitatum George K. Helmkamp, E. A. Helmkamp 2002-4-22 7424 San Benito San Andreas rift zone, Rabbit Valley, along Calif. Hwy 25; 23.7 mi north of Calif. Hwy 198 549 Comment
  UCR122580  Filago gallica George K. Helmkamp, E. A. Helmkamp 2001-5-30 6732 San Benito Gabilan Range, 11.0 mi south of San Juan Bautista on Hwy G-1; entrance to Fremont Peak State Park 800 Comment
  UCR122909  Wyethia helenioides George K. Helmkamp, E. A. Helmkamp 2001-5-29 6705 San Benito South Coast Range, Gabilan Range, 7.1 mi. south of San Juan Bautista on Hwy G-1 488 Comment
  UCR122911  Geranium molle George K. Helmkamp, E. A. Helmkamp 2001-5-29 6709 San Benito South Coast Range, Gabilan Range, 7.1 mi. south of San Juan Bautista on Hwy G-1 488 Comment
  UCR122918  Adenostoma fasciculatum George K. Helmkamp, E. A. Helmkamp 2001-5-29 6720 San Benito South Coast Range, Gabilan Range, 7.1 mi. south of San Juan Bautista on Hwy G-1 488 Comment
  CLARK-A1045-195  Allophyllum divaricatum George K. Helmkamp 1978-6-6 San Bernardino San Bernardino Mountains San Bernardino N 7.5'Q Comment
  CLARK-A1045-242  Lupinus excubitus subsp. austromontanus 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-A1045-356  Eriophyllum ambiguum George K. Helmkamp 1977-5-30 F San Bernardino Kelso Kelso Road summit, north of Kelso; ; Kelso 15'Q 1066 Comment
  CLARK-A1045-377  Mimulus purpureus George K. Helmkamp 1979-6-5 San Bernardino San Bernardino Mountains just west of Stanfield cut-off, south side of lake; tree-covered knoll; ; Big Bear Lake 7.5'Q 2133 Comment
  CLARK-A1045-379  Caulanthus major George K. Helmkamp 1979-6-20 San Bernardino San Bernardino Mountains near Stanfield cut-off; yellow pine forest, north edge of lake; Big Bear Lake 7.5'Q Comment
  CLARK-A1045-386  Lewisia nevadensis George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains Keller Peak 7.5'Q Comment
  CLARK-A1045-399  Camissonia pusilla George K. Helmkamp 1979-5-29 San Bernardino Mentone west end of Mentone; orange grove; Yucaipa 7.5'Q Comment
  CLARK-A1045-452  Poa nevadensis George K. Helmkamp 1979-6-5 #1 San Bernardino San Bernardino Mountains north end of Baldwin Lake; sagebrush scrub; ; Big Bear City 7.5'Q 2133 Comment
  CLARK-A1045-470  Plagiobothrys hispidulus George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains along Forest Service road 3N66Y (road to Union Flat), 300 yards north of 3N08; wet seep; ; Big Bear City 7.5'Q 2285 Comment
  CLARK-A1045-474  Allium campanulatum George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains Forest Service road 3N08 at junction with 3N66Y; dry, rocky area; ; Big Bear City 7.5'Q 2285 Comment
  CLARK-A1045-482  Linanthus breviculus George K. Helmkamp 1979-6-5 San Bernardino San Bernardino Mountains north end of Baldwin Lake; sagebrush scrub; ; Big Bear City 7.5'Q 2133 Comment
  CLARK-A1045-490  Leptodactylon pungens subsp. pulchriflorum George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains at north edge of Lake; sagebrush scrub; ; Big Bear City 7.5'Q 2133 Comment
  CLARK-A1045-494  Ranunculus canus var. ludovicianus George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains Big Bear City 7.5'Q Comment
  CLARK-A1045-540  Collinsia parviflora George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains at junction of Forest Service road 3N08 with 3N66Y; dry slope under pines; ; Big Bear City 7.5'Q 2285 Comment
  CLARK-A1045-544  Arabis holboellii George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains 400 yards north of Forest Service road 3N08 along road 3N66Y; dry flat under pines; ; Big Bear City 7.5'Q 2285 Comment
  CLARK-A1045-568  Lupinus breweri George K. Helmkamp 1979-6-3 San Bernardino San Bernardino Mountains roadside; yellow pine forest; ; Keller Peak 7.5'Q Comment
  CLARK-A1045-607  Astragalus acutirostris George K. Helmkamp 1978-5-6 San Bernardino Mojave Desert 3 miles up Kingston Road from Rocky hill [?]; ; Clark Mt. 15'Q 1036 Comment
  CLARK-A1045-609  Nemacladus rubescens George K. Helmkamp 1978-5-6 San Bernardino Mesquite Mountains 1.5 miles east of Pass; Clark Mt. 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-A1045-619  Arabis pulchra George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert east slope of Cima Dome, along Cima Road; in joshua tree woodland; ; Mescal Range 15'Q 1462 Comment
  CLARK-A1045-643  Sitanion hansenii George K. Helmkamp 1977-5-29 San Bernardino Cima Dome Mescal Range 15'Q Comment
  CLARK-A1045-664  Eriogonum pusillum George K. Helmkamp 1977-5-29 San Bernardino Cima Kelso 15'Q Comment
  CLARK-A1045-666  Caucalis microcarpa George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert Flynn 15'Q Comment
  CLARK-A1045-691  Purshia glandulosa George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert Kelso [Cima?] Road; Kelso 15' Q Comment
  CLARK-A1045-726  Lomatium mohavense George K. Helmkamp 1978-5-1 San Bernardino Mojave Desert 3.3 miles north of Slash-X Ranch, north of Ord Mountains; Barstow SE 7.5'Q Comment
  CLARK-A1045-737  Phacelia campanularia subsp. vasiformis George K. Helmkamp 1978-5-1 San Bernardino Mojave Desert Ord Saddle; Ord Mts 15'Q Comment
  CLARK-A1045-739  Eriogonum reniforme George K. Helmkamp 1978-4-9 San Bernardino Mojave Desert flats between East Cronese Lake and Interstate Highway 15; Cave Mountain 15'Q Comment
  CLARK-A1045-753  Hedeoma nana subsp. californica George K. Helmkamp 1977-5-14 San Bernardino Mesquite Mountains steep limestone slope 1.5 miles east of Winters Pass; ; Clark Mt. 15'Q 1127 Comment
  CLARK-A1045-775  Linanthus breviculus 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-A1045-783  Eriodictyon angustifolium George K. Helmkamp 1977-5-14 San Bernardino New York Mountains south end of New York Mountains in cresosote bush scrub; ; Mid Hills 15'Q 1676 Comment
  CLARK-A1045-795  Eriogonum viridescens George K. Helmkamp 1978-4-18 #1; 20 San Bernardino Mojave Desert 5 miles south of Barstow along State highway 247; Barstow SE 7.5' Q Comment
  CLARK-A1045-802  Gilia filiformis George K. Helmkamp 1978-5-6 #1 San Bernardino Mojave Desert 3 miles northeast on Kingston Road; ; Clark Mtn 15'Q 1097 Comment
  CLARK-A1045-812  Chorizanthe brevicornu George K. Helmkamp 1977-5-14 San Bernardino Mesquite Mountains Clark Mt. 15' Q Comment
  CLARK-A1045-848  Mentzelia albicaulis George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains Clark Mt. 15'Q Comment
  CLARK-A1045-860  Coleogyne ramosissima George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains Clark Mt. 15'Q Comment
  HSC79210  Bahiopsis parishii G. K. Helmkamp 1983-10-6 - 35 San Bernardino Big Morongo Preserve of TNC, S of town on Morongo Valley in Big Morongo Canyon; Little San Bernardino Mtns. 762 Comment
  HSC79215  Solanum americanum G. K. Helmkamp 1984-4-29 - 2 San Bernardino Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters, floor of main canyon to 0.25 mi. up a broad side canyon to the east. 701 Comment
  HSC79221  Tamarix ramosissima G. K. Helmkamp 1984-4-29 - 1 San Bernardino Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters, floor of main canyon to 0.25 mi. up a broad side canyon to the east. 701 Comment
  HSC79291  Bromus diandrus G. K. Helmkamp 1984-5-1 - 1 San Bernardino Big Morongo Preserve of The Nature Conservancy, S of the town of Morongo Valley in Big Morongo Canyon, Little San Bernardino Mtns., upper stream crossing 762 Comment
  HSC80082  Baccharis sergiloides G. K. Helmkamp 1985-8-28 675 San Bernardino Big Morongo Preserve, S of Morongo Valley, 1 mile downstream from Kiosk 716 Comment
  OBI39260  Ericameria paniculata G. Helmkamp 1985-10-14 721 San Bernardino The side of Canyon Trail, 1/4 mi downstream from the Kiosk 747 Comment
  RSA518507  Chenopodium incanum George K. Helmkamp 1985-5-28 s.n. San Bernardino South of Morongo Valley. First STring crossing about 1 1/2 miles downstream from the Kiosk. 716 Comment
  RSA564312  Malacothamnus fremontii George K. Helmkamp 1993-9-22 35 -16 San Bernardino Steep canyon side with Pinon Pine. 14.4 mi. up Burns Canyon from junction of Pioneer Town and Pipes Cyn Rds. 2073 Comment
  RSA567429  Mirabilis bigelovii George K. Helmkamp 1993-9-12 23 -2 San Bernardino Along the edge of Burns Canyon. 1372 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
  SBBG103907  Epilobium canum subsp. latifolium G. K. Helmkamp 1993-9-22 34 -20 San Bernardino 6.7 mi up Burns Cyn from the jct of Pioneer Town and Pipes Cyn Rds 1524 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
  SD124777  Atriplex lentiformis 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
  SD124778  Atriplex polycarpa G. K. Helmkamp 1986-9-27 San Bernardino 28 miles north of Baker on Highway 127 along Salt Creek at the Salt Springs Hills. 185 Comment
  SD140157  Amsinckia tessellata George Helmkamp 1993-4-24 San Bernardino Between Kelbaker Road and the Granite Mountains, 5.1 miles northeast of US-40 1220 Comment
  SD224836  Adenophyllum cooperi G. K. Helmkamp, E. A. Helmkamp 1998-3-16 2832 San Bernardino 50 ft. N of the boundary of Joshua Tree National Park at the S end of Sunkist Rd (E of town of Joshua Tree). 883 Comment
  SD224920  Atriplex elegans var. fasciculata G. K. Helmkamp 1998-3-30 3000 San Bernardino Mojave Desert: Dale Dry Lake, E of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  SD225051  Aphyllon cooperi subsp. cooperi G. K. Helmkamp 1998-4-4 3124 San Bernardino Mojave Desert; S edge of Cadiz Dry Lake, 13.1 mi N of mile-marker 76 on CA hwy 62 (Twentynine Pams Hwy), E of Twentynine Palms 182 Comment
  SD227821  Psorothamnus fremontii var. fremontii G. K. Helmkamp, E. A. Helmkamp 1998-5-3 3504 San Bernardino Eastern Mojave Desert: Mesquite Mtns., 3.0 mi. W of the Nevada border at Sandy Valley 1067 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
  UCD116813  Sphaeralcea ambigua var. rosacea G. Helmkamp 1997-11-2 2511 C San Bernardino Morongo Valley, Big Morongo Wildlife Preserve, Desert Wash Trail. 792 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
  UCD170924  Desmodium tortuosum George K. Helmkamp 1995-10-23 s.n. San Bernardino Mojave Desert, Yucca Valley, 979 Old Woman Springs Rd. , 8.2 mi. north of Hwy 62. 1000 Comment
  UCR101621  Geraea canescens George K. Helmkamp, E. A. Helmkamp 1998-2-26 2763 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101628  Cryptantha angustifolia George K. Helmkamp, E. A. Helmkamp 1998-2-26 2787 San Bernardino Mojave Desert, NW side of Salt Spring Hills about 28 mi north of Baker; between the hills and Calif. Hwy 127 201 Comment
  UCR101631  Cryptantha pterocarya var. pterocarya George K. Helmkamp, E. A. Helmkamp 1998-2-26 2804 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
  UCR101636  Lepidium lasiocarpum var. lasiocarpum George K. Helmkamp, E. A. Helmkamp 1998-2-26 2783 San Bernardino Mojave Desert, NW side of Salt Spring Hills about 28 mi north of Baker; between the hills and Calif. Hwy 127 201 Comment
  UCR101638  Streptanthella longirostris George K. Helmkamp, E. A. Helmkamp 1998-2-26 2762 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101652  Nama demissa var. covillei George K. Helmkamp, E. A. Helmkamp 1998-2-26 2779 San Bernardino Mojave Desert, NW side of Salt Spring Hills about 28 mi north of Baker; between the hills and Calif. Hwy 127 201 Comment
  UCR102963  Lotus strigosus var. tomentellus George K. Helmkamp 1998-3-30 3036 San Bernardino Mojave Desert, vicinity of Twentynine Palms; Encelia Ave., 1.0 mi. north of Calif. Hwy 62 793 Comment
  UCR102967  Pectocarya heterocarpa George K. Helmkamp, E. A. Helmkamp 1998-3-16 2827 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
  UCR102973  Amsinckia tessellata George K. Helmkamp, E. A. Helmkamp 1998-3-16 2820 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
  UCR102977  Gilia stellata George K. Helmkamp, E. A. Helmkamp 1998-3-16 2814 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
  UCR102983  Amsinckia tessellata var. tessellata George K. Helmkamp 1998-3-30 3018 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR102987  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 1998-3-16 2834 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
  UCR102993  Schismus arabicus George K. Helmkamp 1998-3-30 3007 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR102997  Malacothrix glabrata George K. Helmkamp 1998-3-30 3019 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 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
  UCR103327  Perityle emoryi George K. Helmkamp 1998-3-30 3041 San Bernardino Mojave Desert, vicinity of Twentynine Palms; Encelia Ave., 1.0 mi. north of Calif. Hwy 62 793 Comment
  UCR103333  Monoptilon bellioides George K. Helmkamp 1998-3-30 3027 San Bernardino Mojave Desert, vicinity of Twentynine Palms; Encelia Ave., 1.0 mi. north of Calif. Hwy 62 793 Comment
  UCR103337  Chaenactis fremontii George K. Helmkamp 1998-3-30 3033 San Bernardino Mojave Desert, vicinity of Twentynine Palms; Encelia Ave., 1.0 mi. north of Calif. Hwy 62 793 Comment
  UCR103340  Chaenactis carphoclinia George K. Helmkamp 1998-3-30 3037 San Bernardino Mojave Desert, vicinity of Twentynine Palms; Encelia Ave., 1.0 mi. north of Calif. Hwy 62 793 Comment
  UCR103344  Chenopodium fremontii George K. Helmkamp 1993-9-22 34- 03 San Bernardino San Bernardino Mtns., 6.7 mi. up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 1529 Comment
  UCR104009  Tamarix ramosissima George K. Helmkamp 1998-4-4 3094 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
  UCR104059  Schismus arabicus George K. Helmkamp 1998-4-4 3116 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
  UCR104864  Cryptantha pterocarya var. pterocarya George K. Helmkamp, E. A. Helmkamp 1998-3-16 2838 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
  UCR104870  Achyronychia cooperi George K. Helmkamp 1998-3-30 3003 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR118302  Cryptantha pterocarya var. pterocarya George K. Helmkamp, E. A. Helmkamp 1998-4-19 3353 San Bernardino Mojave Desert, northwest side of East Cronese Lake, about 15 miles west of Baker 335 Comment
  UCR118321  Psathyrotes ramosissima George K. Helmkamp, E. A. Helmkamp 1998-4-18 3334 San Bernardino Mojave Desert, Basin Road, 2.7 miles south of I-15 (west of Baker). 396 Comment
  UCR118326  Nama hispida var. spathulata George K. Helmkamp, E. A. Helmkamp 1998-4-18 3336 San Bernardino Mojave Desert, Basin Road, 2.7 miles south of I-15 (west of Baker). 396 Comment
  UCR118328  Astragalus lentiginosus var. variabilis George K. Helmkamp, E. A. Helmkamp 1998-4-18 3339 San Bernardino Mojave Desert, Basin Road, 2.7 miles south of I-15 (west of Baker). 396 Comment
  UCR118331  Chaenactis stevioides George K. Helmkamp, E. A. Helmkamp 1998-4-18 3344 San Bernardino Mojave Desert, north side of Dumont Sand Dunes, 5.2 miles east of Calif. Hwy 127 305 Comment
  UCR118956  Muhlenbergia microsperma George K. Helmkamp, E. A. Helmkamp 1998-4-17 3331 San Bernardino Mojave Desert, 18 miles ESE of Baker on Kelbaker Road. 884 Comment
  UCR121865  Dithyrea californica George K. Helmkamp, E. A. Helmkamp 2001-3-24 6301 San Bernardino Southcentral Mojave Desert, 0.3 mile west of CA Hwy 247 on Pipes Canyon Road 1037 Comment
  UCR122574  Baileya pleniradiata George K. Helmkamp, E. A. Helmkamp 2001-3-24 6315 San Bernardino Southcentral Mojave Desert, 0.3 mile west of CA Hwy 247 on Pipes Canyon Road 1037 Comment
  UCR122613  Lotus strigosus var. tomentellus George K. Helmkamp, E. A. Helmkamp 2001-3-30 6424 San Bernardino Eastern Mojave Desert, US-95, 8.5 mi south of I-40. 351 Comment
  UCR122791  Eriophyllum lanosum George K. Helmkamp, E. A. Helmkamp 2001-3-31 6350 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
  UCR122825  Camissonia refracta George K. Helmkamp, E. A. Helmkamp 2001-3-31 6352 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122835  Eriogonum thomasii George K. Helmkamp, E. A. Helmkamp 2001-3-31 6354 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122959  Perityle emoryi George K. Helmkamp, E. A. Helmkamp 2001-3-30 6426 San Bernardino Eastern Mojave Desert, US-95, 8.5 mi south of I-40. 351 Comment
  UCR123230  Camissonia brevipes subsp. brevipes George K. Helmkamp, E. A. Helmkamp 2001-3-30 6414 San Bernardino Eastern Mojave Desert, US-95, 8.5 mi south of I-40. 351 Comment
  UCR123979  Baileya pleniradiata George K. Helmkamp, E. A. Helmkamp 2001-3-30 6395 San Bernardino Mojave Desert, CA Hwy 62, 16.2 mi east of Utah Trail (Twentynine Palms) near Dale Lake 366 Comment
  UCR123989  Palafoxia arida var. arida George K. Helmkamp, E. A. Helmkamp 2001-3-30 6382 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
  UCR124083  Tidestromia oblongifolia George K. Helmkamp, Elizabeth Helmkamp 2000-4-4 5362 San Bernardino Colorado River, Beside the California-Arizona border near Topock, AZ. 152 Comment
  UCR124087  Hordeum murinum subsp. leporinum George K. Helmkamp, Elizabeth Helmkamp 2000-4-4 5345 San Bernardino Sonoran (Colorado) Desert, Sacramento Spring. Along Calif. Hwy 95, 1.6 mi north of Interstate-40 396 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
  UCR131096  Machaeranthera tortifolia var. tortifolia George K. Helmkamp, E. A. Helmkamp 1998-5-3 3517 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR132759  Cryptantha barbigera George K. Helmkamp 1984-4-29 A- 32 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
  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
  UCR137746  Erigeron divergens George K. Helmkamp, E. A. Helmkamp 1999-9-30 5317 San Bernardino San Bernardino Mountains, junction of 2N02 (probably Round Valley Rd.) and Calif. Hwy 38 SE of Baldwin Lake 2454 Comment
  UCR14006  Eriogonum parishii George K. Helmkamp 1973-9-25 s.n. San Bernardino San Bernardino Mtns., Fawnskin 1829 Comment
  UCR14007  Artemisia rothrockii George K. Helmkamp 1973-9-25 s.n. San Bernardino San Bernardino Mtns., Holcomb Creek north of Fawnskin 1835 Comment
  UCR14008  Cryptantha intermedia George K. Helmkamp 1973-9-25 s.n. San Bernardino San Bernardino Mtns, 1 mi north of Fawnskin Comment
  UCR14009  Chrysothamnus nauseosus George K. Helmkamp 1973-10-4 s.n. San Bernardino Mojave Desert, Hwy I-15 in Victorville 884 Comment
  UCR14651  Brickellia oblongifolia 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
  UCR15383  Phacelia rotundifolia George K. Helmkamp 1977-5-30 s.n. San Bernardino Eastern Mojave Desert, 2 mi east of Winters Pass in the Mesquite Mtns. 1098 Comment
  UCR157582  Gilia leptomeria George K. Helmkamp 1986-4-5 732 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Morongo Valley, NE end of the Nature Conservancy Preserve, along the Desert Wash Trail 823 Comment
  UCR15947  Silene verecunda subsp. platyota George K. Helmkamp, L. Hubbard 1979-6-22 s.n. San Bernardino San Bernardino Mtns, about 2 mi up 3N06 from the county dump just above Baldwin Lake 2287 Comment
  UCR21762  Eriogonum brachypodum George K. Helmkamp 1979-10-6 s.n. San Bernardino Eastern Mojave Desert, 1 mi west of Kelso 732 Comment
  UCR21763  Arida arizonica George K. Helmkamp 1980-5-23 s.n. San Bernardino Eastern Mojave Desert, Kelbaker Road [Hwy 127], 2 miles north of Baker 280 Comment
  UCR37510  Distichlis spicata George K. Helmkamp 1984-4-20 840420- 01 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
  UCR37647  Cryptantha angustifolia George K. Helmkamp 1984-4-29 A 30 San Bernardino Little San Bernardino Mtns., Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters 701 Comment
  UCR37648  Agrostis viridis George K. Helmkamp 1984-4-29 A- 13 San Bernardino Little San Bernardino Mtns., Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters 701 Comment
  UCR37649  Cynodon dactylon George K. Helmkamp 1984-4-29 A- 21 San Bernardino Little San Bernardino Mtns., Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters 701 Comment
  UCR37666  Salix lasiolepis George K. Helmkamp 1984-4-20 840420- 42 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
  UCR37669  Pectocarya recurvata George K. Helmkamp 1984-4-29 A- 44 San Bernardino Little San Bernardino Mtns., Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters 701 Comment
  UCR37722  Eriophyllum confertiflorum George K. Helmkamp 1984-4-29 A 34 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon. Along the pipeline rd, c. 0.25 mi below the lower border of TNC owned land 701 Comment
  UCR37723  Melilotus indicus George K. Helmkamp 1984-4-29 A- 51 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
  UCR39207  Avena fatua George K. Helmkamp 1985-4-18 352 San Bernardino Mojave Desert, Morongo Canyon, SE of Morongo Valley. 762 Comment
  UCR39209  Bromus catharticus George K. Helmkamp 1985-5-10 483 San Bernardino Little San Bernardino Mountains, At entrance to Big Morongo Nature Conservancy Preserve, SE of town of Morongo Valley 762 Comment
  UCR40281  Atriplex serenana George K. Helmkamp 1985-8-8 703 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Big Morongo Preserve, south of Morongo Valley. Along the Desert Wash Trail; NW Mesa 762 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
  UCR51285  Salvia dorrii 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
  UCR79282  Asclepias fascicularis George K. Helmkamp 1993-9-22 34- 04 San Bernardino San Bernardino Mtns., 6.7 mi. up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 1529 Comment
  UCR79283  Artemisia tridentata George K. Helmkamp 1993-9-12 23- 08 San Bernardino San Bernardino Mtns., edge of Burns Canyon 1375 Comment
  UCR79306  Cordylanthus nevinii George K. Helmkamp 1993-9-22 35- 17 San Bernardino San Bernardino Mtns., 14.4 mi up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 2073 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
  UCR79309  Ceanothus cordulatus George K. Helmkamp 1993-9-22 37- 01 San Bernardino San Bernardino Mtns, Round Valley Road just east of Calif. Hwy 38 2378 Comment
  UCR87532  Machaeranthera canescens var. leucanthemifolia George K. Helmkamp 1993-4-24 s.n. San Bernardino Eastern Mojave Desert, south side of Kelso sand dunes 701 Comment
  UCR88770  Chrysothamnus teretifolius George K. Helmkamp 1995-11-10 s.n. San Bernardino Little San Bernardino Mtns, TNC Big Morongo Preserve, in Big Morongo Cyn, south of town of Morongo Valley. 793 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
  UCR91713  Carex fracta George K. Helmkamp 1996-6-11 1130 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR91966  Habenaria dilatata var. leucostachys George K. Helmkamp 1996-6-11 1136 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR91967  Ranunculus californicus George K. Helmkamp 1996-6-11 1152 San Bernardino San Bernardino Mountains, Along SN11 SW of city of Big Bear Lake, about 0.5 mi west of Mill Creek Rd 2256 Comment
  UCR92494  Bromus carinatus George K. Helmkamp 1996-6-11 1153 San Bernardino San Bernardino Mountains, Along 2N11 SW of the city of Big Bear Lake, c. 0.5 mile west of [2N10] Mill Creek Road 2256 Comment
  UCR96823  Cryptantha intermedia George K. Helmkamp 1997-4-20 1643 San Bernardino Mojave Desert, Morongo Valley, vacant lot at Vista Dr. near Pinyon Ave. 1006 Comment
  UCSB50308  Isocoma acradenia Helmkamp; Clarke; Derby 1973-10-16 San Bernardino At Afton near Baker Comment
  VVC195  Euphorbia palmeri G. K. Helmkamp 1995-10-28 1 -7 San Bernardino San Bernardino Mtns., Along Round Valley Road (2N01), 0.6 mi NE of its junction with CA-38 2439 Comment
  VVC472  Ribes nevadense G. K. Helmkamp 1996-6-11 1126 San Bernardino San Bernardino Mtns., 1.2 mi. SW of Tulip Ave, City of Big Bear Lake 2143 Comment
  CLARK-A1045-397  Cryptantha intermedia George K. Helmkamp 1979-6-5 San Bernardino Highland beside dry wash just south of Highland; sandy flat; Redlands 7.5'Q Comment
  RSA328956  Panicum antidotale George K. Helmkamp, Oscar F. Clarke, J. Derby 1973-10-16 s.n. San Bernardino China Ranch along the Amargosa River near the Inyo Co. line 305 Comment
  CLARK-A1045-1263  Frasera parryi George K. Helmkamp 1979-6-6 San Diego Lake Henshaw 2 miles toward Julian from Lake Henshaw; Warners Ranch 7.5'Q Comment
  CLARK-A1045-1287  Streptanthella longirostris George K. Helmkamp 1978-3-17 San Diego Anza-Borrego Desert State Park sandy bottom of Bisnaga Alta Wash; Sweeney Pass 7.5'Q Comment
  CLARK-A1045-1288  Lyrocarpa coulteri var. palmeri George K. Helmkamp 1978-3-17 San Diego Anza-Borrego Desert State Park rocky base of Bisnaga Alta Wash; Sweeney Pass 7.5'Q Comment
  CLARK-A1045-1315  Euphorbia serpyllifolia subsp. hirtula George K. Helmkamp 1977-9-23 San Diego along Camino Ruiz two blocks south of Mira Mesa boulevard, a roadside weed; Del Mar 7.5'Q Comment
  CLARK-A1045-1321  Chenopodium rubrum George K. Helmkamp 1977-10-16 San Diego Imperial Beach Silver Strand; salt marsh at the end of 9th Street; Imperial Beach 7.5'Q Comment
  CLARK-A1045-1326  Aster spinosus George K. Helmkamp 1977-10-9 San Diego Imperial Beach along 19th Street; weed in farmland; Imperial Beach 7.5'Q Comment
  RSA602627  Daucus carota George K. Helmkamp 1996-9-11 1161 San Diego Ca. 5 miles south of California Highway 76 on Couser Ranch Rd. onto Lilac Rd. to Wills avocado ranch., (33 deg 15.6 N, 117 deg 6 W) [UTM 10km cell: MG-9E, 8N. Weaver Mountain] 335 Comment
  RSA628438  Rhus integrifolia George K. Helmkamp, E. Helmkamp 1999-2-26 4631 San Diego Chula Vista: Border State Park near the Pacific Ocean and Mexico. 6 Comment
  RSA628860  Malacothrix californica George K. Helmkamp, E. A. Helmkamp 1999-4-15 4646 San Diego Between Lake Henshaw and Matagual Valley, Barrett Hill Road off of highway 79, 6.5 miles southwest of Warner Hot Springs 838 Comment
  RSA628864  Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 1999-4-16 4665 San Diego Old Viejas Grade alongside creek 1.5 mi NW of Descanso. 1098 Comment
  UCR107906  Urtica urens George K. Helmkamp, E. A. Helmkamp 1997-1-10 1284 San Diego Chula Vista. West end of E Street between I-5 & San Diego Bay. Beside CV preserve. 8 Comment
  UCR108291  Lycium californicum George K. Helmkamp, E. A. Helmkamp 1997-1-10 1285 San Diego Chula Vista. West end of E Street between I-5 & San Diego Bay. Beside CV preserve. 8 Comment
  UCR130642  Trifolium albopurpureum var. albopurpureum George K. Helmkamp, E. A. Helmkamp 1999-4-18 4699 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
  UCR94631  Euphorbia maculata George K. Helmkamp 1996-9-11 1181 San Diego Peninsular Range, c. 5 miles south of Calif. Hwy 76 on Couser Canyon Road onto Lilac Rd. to Wills Avocado Ranch 335 Comment
  CAS-BOT-BC175679  Chenopodium album G. K. Helmkamp; E. A. Helmkamp 2007-10-13 13096 San Joaquin Northern San Joaquin Valley: along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road 37 Comment
  HSC104232  Lupinus bicolor G. 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 of Ione 87 Comment
  RSA789510  Gilia tricolor subsp. tricolor George K. Helmkamp, E. A. Helmkamp 2010-4-7 15835 San Joaquin along CA-88, 1.1 miles southwest of the Amador County line, 6 miles NE (33 deg.) of Clements 79 Comment
  SD241096  Malva nicaeensis George K. Helmkamp, E. A. Helmkamp 2012-4-7 18722 San Joaquin San Joaquin Valley: along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden (Valley Springs SW 7.5'Q) 52 Comment
  SD243111  Brassica rapa George K. Helmkamp, E. A. Helmkamp 2011-3-12 17070 San Joaquin Upper San Joaquin Valley: between Lodi and Galt, Forest Lake Road just west of CA-99 (Lodi North 7.5'Q) 27 Comment
  SD254512  Phalaris paradoxa George K. Helmkamp, Elizabeth Helmkamp 2013-3-26 20227 San Joaquin East end of San Joaquin Valley: Escalon Bellota Road (J6), 6.1 miles south of its juction with CA-26, 0.52 mile south of Copperopolis Rd. 52 Comment
  SEINET3828573  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2012-1 18721 San Joaquin San Joaquin Valley: along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden (Valley Springs SW 7.5') 52 Comment
  UCR207832  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2009-3-26 14462 San Joaquin San Joaquin Valley, junction of Collier Road and CA-88, about 0.2 mile north of the Mokelumne River 43 Comment
  UCR232201  Bromus diandrus George K. Helmkamp, E. A. Helmkamp 2011-3-12 17068 San Joaquin Upper San Joaquin Valley, between Lodi and Galt, Forest Lake Road just west of CA-99 27 Comment
  UCR232635  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2011-3-29 17104 San Joaquin San Joaquin Valley, along CA-26 at the junction with Ospital/N Wimer Road, c. 0.3 mile southwest of the Calaveras County line, 9.1 miles NE (56 deg. ) of Linden 72 Comment
  UCR232679  Nicotiana acuminata var. multiflora George K. Helmkamp, E. A. Helmkamp 2011-10-15 18428 San Joaquin San Joaquin Valley, along CA-26, 0.6 mile northeast of Escalon-Bellota Rd. 40 Comment
  UCR242627  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2010-4-7 15818 San Joaquin Northeast San Joaquin Valley, junction of CA-88 and CA-12, about 6 miles NE of Lockeford, 1.2 mi. NE of Clements 40 Comment
  UCR242952  Festuca dertonensis George K. Helmkamp, E. A. Helmkamp 2010-4-7 15828 San Joaquin Northeast San Joaquin Valley, junction of CA-88 and CA-12, about 6 miles NE of Lockeford, 1.2 mi. NE of Clements 40 Comment
  UCR253540  Echinochloa colona George K. Helmkamp, Elizabeth Helmkamp 2012-10-26 20086 San Joaquin San Joaquin Valley, Littlejohns Creek, along unnamed dirt road 0.3 mi. south of CA-4 at a point 0.5 miles east of Farmington 32 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
  UCR253608  Raphanus sativus George K. Helmkamp 2014-3-18 22578 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-BC375156  Stephanomeria cichoriacea G. K. Helmkamp; E. A. Helmkamp 2000-9-2 5967 San Luis Obispo Irish Hills: Profumo Canyon, 2.2 mi W of Los Osos Valley Rd. 137 Comment
  CDA3593  Brassica tournefortii G. K. Helmkamp 2004-3-13 8358 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
  CLARK-A1045-1349  Sagina occidentalis George K. Helmkamp 1978-6-5 San Luis Obispo Los Osos Montana de Oro State Park; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1373  Lupinus polycarpus George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road at Morro Bay; Morro Bay S 7.5'Q 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
  IRVC29232  Pteridium aquilinum G. K. Helmkamp, E. A. Helmkamp 2004-10-8 8857 San Luis Obispo Santa Lucia Wilderness area, 0.9 mi E of Lopez Lake entrance then 3.3 mi N along Upper Lopez Cyn Rd. Outer South Coast Ranges 166 Comment
  RSA613754  Quercus agrifolia George K. Helmkamp 1997-3-8 1440 San Luis Obispo SE of Los Osos. Swift Ranch, starting ca. 2 mi. S of Los Osos Valley Rd on Clark Valley Rd. 107 Comment
  RSA613942  Layia munzii George K. Helmkamp, E. A. Helmkamp 1997-3-8 1410 San Luis Obispo Carrizo Plain. 30.1 mi. NW of CA-166 on Soda Lake Rd; at San Diego Crk Rd and edge of Soda Lake. 701 Comment
  RSA614183  Saxifraga californica George K. Helmkamp, E. A. Helmkamp 1997-3-8 1420 San Luis Obispo Along CA-58 just W of Navajo Creek (W of Carrizo Plain).Ca. 5 miles south of California Highway 76 on Couser Ranch Rd. onto Lilac Rd. to Wills avocado ranch., (33 deg 15.6 N, 117 deg 6 W) 335 Comment
  RSA615143  Camissonia campestris subsp. campestris George K. Helmkamp, E. A. Helmkamp 1998-4-8 3231 San Luis Obispo Soda Lake Road, 6.6 miles NW of junction with CA highway 33 (roughly W of Maricopa) 671 Comment
  RSA615147  Trifolium gracilentum George K. Helmkamp, E. A. Helmkamp 1998-4-8 3219 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with CA hwy 33 (roughly WNW of Maricopa). 579 Comment
  RSA709061  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2005-4-17 9366 San Luis Obispo Central Coast: Corbett canyon, 2.3 miles N of Hwy CA-227 in Arroyo Grande. 81 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
  RSA710127  Cakile maritima var. maritima George K. Helmkamp 2004-3-23 8390 San Luis Obispo Central Coast: ENE of Nipomo, 1.5 miles SW of Rancho Road along Dana Foothill road. 171 Comment
  SD148186  Atriplex watsonii G. K. Helmkamp, E. A. Helmkamp 2000-9-1 5949 San Luis Obispo Los Osos; 0.5 mile northwest of Hazard Canyon, between Howard St. and sand dunes. 6 Comment
  SD148187  Atriplex triangularis G. K. Helmkamp, E. A. Helmkamp 2000-9-1 5957 San Luis Obispo Los Osos; 0.5 mile northwest of Hazard Canyon, between Howard St. and sand dunes. 6 Comment
  SD185053  Polypodium californicum G. K. Helmkamp, E. A. Helmkamp 2005-3-5 9010 San Luis Obispo Santa Lucia Wilderness north of Lake Lopez, Upper Lopez Canyon Road, 7.2 miles north of junction with Lopez Road and Water End Road. 174 Comment
  SD186065  Artemisia californica G. K. Helmkamp 2003-7-29 8033 B San Luis Obispo 0.6 mile south of Nipomo Hill in Arroyo Grande. 46 Comment
  SD186081  Erigeron blochmaniae G. K. Helmkamp 2003-7-29 8044 B San Luis Obispo 0.6 mile south of Nipomo Hill in Arroyo Grande area. 46 Comment
  SD186350  Solanum physalifolium var. nitidibaccatum G. K. Helmkamp 2003-8-16 8073 San Luis Obispo Central Coast: Nipomo Mesa at Willow Road, 0.5 mi. E of CA-1, near Black lake golf course 75 Comment
  SEINET1906689  Lonicera involucrata var. ledebourii George K. Helmkamp 2004-1 8647 San Luis Obispo Central Coast: East entrace to Oso Flaco Lake. 9 Comment
  SEINET251659 Image available Bromus catharticus George K. Helmkamp 2004-3-21 8386 San Luis Obispo Central Coast: Mesa Duners Mobile Home Park along Mesa View Dr., 0.2 mi S. of the junction of Halcyon Rd. SE of O ceano ( Oceano 7.5.' Q) 61 Comment
  SEINET3386346 Image available Vulpia myuros George K. Helmkamp, E. A. Helmkamp 2005-3-30 9244 San Luis Obispo Outer South Coast Ranges; Pozo Road, 5.5 mi east of [Santa Margarita Lake Road]; W end of Garcia Mountains 503 Comment
  SEINET4172649  Acacia longifolia George K. Helmkamp, E. A. Helmkamp 2005-2-12 8896 San Luis Obispo Central Coast, Mesa Dunes Mobile Home Park, 765 Mesa View Drive, along CA Highway 1, 0.3 mi S of Mesa View Drive SE of Oceano/Arroyo Grande. (Oceano 7.5') 79 Comment
  UC1792815  Deinandra paniculata G. K. Helmkamp, E. A. Helmkamp 2004-10-1 8826 San Luis Obispo Central Coast; Outer South Coast Range: 3.4 miles east of Lopez Lake along Hi Mountain Road and beside Arroyo Grande Creek 170 Comment
  UCD109012  Lupinus nanus G. K. Helmkamp 2004-3-15 8378 San Luis Obispo San Luis Obispo County: Central Coast; edge of Nipomo Mesa overlooking Cienaga Valley, along CA-1 (Mesa View Dr.), 0.3 mile north of Halcyon Road. 76 Comment
  UCD133335  Hypochaeris glabra G. K. Helmkamp; E. A. Helmkamp 2000-6-15 5683 San Luis Obispo San Luis Obispo County: Central coast: between Los Osos and sand dunes west of the end of Howard St. 15 Comment
  UCR100322  Baccharis glutinosa George K. Helmkamp 1997-10-30 2509 San Luis Obispo Los Osos, along Osos Valley [Turri] Road, 1.2 miles east of South Bay Blvd. 46 Comment
  UCR100926  Descurainia sophia George K. Helmkamp, E. A. Helmkamp 1998-4-8 3209 San Luis Obispo Elkhorn Grade Rd, 6.3 mi. NW of jct with Calif. hwy 33 (roughly west of Maricopa) 549 Comment
  UCR100928  Ericameria linearifolia George K. Helmkamp, E. A. Helmkamp 1998-4-8 3213 San Luis Obispo Elkhorn Grade Rd, 6.3 mi. NW of jct with Calif. hwy 33 (roughly west of Maricopa) 549 Comment
  UCR101009  Chaenactis glabriuscula var. heterocarpha George K. Helmkamp, E. A. Helmkamp 1998-4-8 3244 San Luis Obispo Soda Lake Rd at Arrowbear Trail, vic. of California Valley, c. 5 mi. NW of Soda Lake 610 Comment
  UCR101011  Lasthenia ferrisiae George K. Helmkamp, E. A. Helmkamp 1998-4-8 3246 San Luis Obispo Soda Lake Rd at Arrowbear Trail, vic. of California Valley, c. 5 mi. NW of Soda Lake 610 Comment
  UCR101016  Trifolium gracilentum George K. Helmkamp, E. A. Helmkamp 1998-4-8 3219 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with Calif. Hwy 33, roughly WNW of Maricopa 579 Comment
  UCR101018  Microseris lindleyi George K. Helmkamp, E. A. Helmkamp 1998-4-8 3222 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with Calif. Hwy 33, roughly WNW of Maricopa 579 Comment
  UCR103809  Lupinus latifolius George K. Helmkamp 1997-3-8 1452 San Luis Obispo Central Coast 7.5' Q., SE of Los Osos. Swift Ranch, starting c. 2 mi. south of Los Osos Valley Rd on Clark Valley Rd. 107 Comment
  UCR103811  Castilleja foliolosa George K. Helmkamp 1997-3-8 1461 San Luis Obispo Central Coast 7.5' Q., SE of Los Osos. Swift Ranch, starting c. 2 mi. south of Los Osos Valley Rd on Clark Valley Rd. 107 Comment
  UCR103953  Amsinckia spectabilis George K. Helmkamp 1997-6-22 2078 San Luis Obispo Central Coast, South end of Montana de Oro State Park 15 Comment
  UCR104812  Rosa californica George K. Helmkamp 1997-6-20 2054 San Luis Obispo Central Coast, Los Osos, c. 0.2 mi. NE of Buckskin & Martingale 27 Comment
  UCR107901  Ceanothus cuneatus subsp. fascicularis George K. Helmkamp, E. A. Helmkamp 1996-12-22 1276 San Luis Obispo Central Coast, near Martingale Avenue and Buckskin Drive at the east end of Los Osos 61 Comment
  UCR109061  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 1998-6-30 4203 San Luis Obispo South Coast Range, Alamo Creek Rd, 0.9 mile north of Calif. Hwy 166, near Twitchell Reservoir 320 Comment
  UCR115438  Cercocarpus betuloides George K. Helmkamp, E. A. Helmkamp 2000-4-20 5382 San Luis Obispo Central Coast, Prefumo Cyn., 1.2 mi south of Los Osos Valley Rd. 183 Comment
  UCR115557  Sanicula arguta George K. Helmkamp, E. A. Helmkamp 2000-4-20 5416 San Luis Obispo Central Coast, Irish Hills, north of Avila Beach, See Canyon, 7.4 mi south of Los Osos Valley Road 213 Comment
  UCR115812  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2000-6-15 5689 San Luis Obispo Central Coast, between Los Osos and sand dunes west of the end of Howard St. 15 Comment
  UCR118336  Symphoricarpos mollis George K. Helmkamp, E. A. Helmkamp 2000-9-2 5974 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon, 2.2 mi west of Los Osos Valley Road 137 Comment
  UCR118338  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2000-9-2 5965 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon, 2.2 mi west of Los Osos Valley Road 137 Comment
  UCR118352  Chenopodium missouriense George K. Helmkamp, E. A. Helmkamp 2000-9-1 5960 San Luis Obispo Los Osos, Martingale at Buckskin 30 Comment
  UCR118951  Kniphofia uvaria George K. Helmkamp 2000-4-20 5424 San Luis Obispo Central Coast, 0.1 mi south of Turri Rd. (which leads from Los Osos Valley Rd. to near Morro Bay) on old dump road 30 Comment
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Oct 29 2014
  UCR121524  Lupinus microcarpus var. densiflorus George K. Helmkamp, E. A. Helmkamp 2002-4-21 7614 San Luis Obispo Central Coast, Santa Rosa Creek Rd., 11.2 mi east of Cambria 396 Comment
  UCR121530  Alnus rhombifolia George K. Helmkamp, E. A. Helmkamp 2002-4-21 7617 San Luis Obispo Central Coast, Santa Rosa Creek Rd., 11.2 mi east of Cambria 396 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
  UCR122132  Solanum douglasii George K. Helmkamp, E. A. Helmkamp 2000-4-21 5442 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122151  Stachys bullata George K. Helmkamp, E. A. Helmkamp 2000-4-21 5438 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
  UCR122158  Camissonia lewisii George K. Helmkamp, E. A. Helmkamp 2000-4-22 5469 San Luis Obispo Central Coast, Los Osos, between the west end of Howard Ave. and Morro Bay sand dunes 15 Comment
  UCR122512  Castilleja exserta George K. Helmkamp, E. A. Helmkamp 2001-5-2 6628 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122590  Lolium perenne subsp. multiflorum George K. Helmkamp 1995-11-23 115 San Luis Obispo Central Coast, Junction of Martingale Avenue and Buckskin Drive in Los Osos 46 Comment
  UCR122594  Galium porrigens var. porrigens George K. Helmkamp 1995-11-23 111 San Luis Obispo Central Coast, Junction of Martingale Avenue and Buckskin Drive in Los Osos 46 Comment
  UCR122807  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 1998-5-19 3871 A San Luis Obispo Outer South Coast Range; Santa Lucia Range, southwest of Paso Robles along CA Hwy 46 at York Mountain Road 366 Comment
  UCR123161  Salvia mellifera George K. Helmkamp, E. A. Helmkamp 2002-4-16 7416 San Luis Obispo Central Coast, Park Ridge 0.5 mi east of Morro Bay near Turri Road 76 Comment
  UCR123166  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2002-4-19 7554 San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR123168  Ranunculus californicus George K. Helmkamp, E. A. Helmkamp 2002-4-19 7422 San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR123171  Calystegia macrostegia subsp. cyclostegia George K. Helmkamp, E. A. Helmkamp 2002-4-16 7408 San Luis Obispo Central Coast, Park Ridge 0.5 mi east of Morro Bay near Turri Road 76 Comment
  UCR123176  Phacelia ramosissima var. latifolia George K. Helmkamp, E. A. Helmkamp 2002-4-19 7552 San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR123178  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2002-4-19 7418 San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR123181  Silene gallica George K. Helmkamp, E. A. Helmkamp 1998-5-19 3884 San Luis Obispo Outer South Coast Range; Santa Lucia Range, southwest of Paso Robles along CA Hwy 46 at York Mountain Road 366 Comment
  UCR123550  Ericameria ericoides George K. Helmkamp, Elizabeth Helmkamp 1999-11-10 5341 A San Luis Obispo Central Coast, Montana de Oro State Park 61 Comment
  UCR123554  Isocoma menziesii var. vernonioides George K. Helmkamp, Elizabeth Helmkamp 1999-11-10 5330 A San Luis Obispo Central Coast, Morro Bay State Park at the south end of the marina. 6 Comment
  UCR131088  Anthemis cotula George K. Helmkamp, E. A. Helmkamp 1999-5-22 4916 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131091  Lupinus latifolius subsp. latifolius George K. Helmkamp, E. A. Helmkamp 1999-5-22 4913 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131346  Solanum douglasii George K. Helmkamp, E. A. Helmkamp 1999-5-22 4898 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131348  Lupinus chamissonis George K. Helmkamp, E. A. Helmkamp 1999-5-22 4894 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR132021  Myoporum laetum George K. Helmkamp 2003-11-22 8221 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
  UCR132026  Lessingia filaginifolia var. filaginifolia George K. Helmkamp 2003-9-10 8138 San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132028  Cardamine oligosperma George K. Helmkamp 2003-9-10 8136 San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132031  Schoenoplectus pungens var. badius George K. Helmkamp 2003-9-8 8132 San Luis Obispo Central Coast, Saltwater ocean inlet 0.2 mile SW of Oceano Airport 6 Comment
  UCR132036  Medicago polymorpha George K. Helmkamp 2003-7-31 8069 San Luis Obispo Central Coast, west edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road 15 Comment
  UCR132038  Polycarpon tetraphyllum George K. Helmkamp 2003-7-29 8038 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132042  Stephanomeria virgata subsp. pleurocarpa George K. Helmkamp 2003-7-29 8042 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132052  Lavatera cretica George K. Helmkamp 2003-7-31 8048 B San Luis Obispo Central Coast, west edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road 15 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
  UCR134404  Calystegia macrostegia subsp. intermedia George K. Helmkamp, E. A. Helmkamp 2001-4-29 6598 San Luis Obispo Irish Hills, Prefumo Cyn Rd., 2.8 miles west of Los Osos Valley Rd., SW of San Luis Obispo 91 Comment
  UCR134445  Ambrosia psilostachya George K. Helmkamp 2003-9-26 8176 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 Comment
  UCR134450  Xanthium strumarium George K. Helmkamp 2003-9-26 8186 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 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
  UCR13838  Lessingia filaginifolia George K. Helmkamp 1973-8-8 s.n. San Luis Obispo Central Coast, Morro Bay, Baywood Park, hillside c. 1 mi from ocean 3 Comment
  UCR13839  Abronia umbellata George K. Helmkamp 1973-8-8 s.n. San Luis Obispo Central Coast, Morro Bay, Baywood Park, hillside c. 1 mi from ocean 3 Comment
  UCR140075  Amsinckia intermedia George K. Helmkamp 2004-4-1 8411 San Luis Obispo Central Coast, Nipomo Mesa; Mesa Dunes Mobile Home Park along Mesa View Dr., 0.2 mi south of Halcyon Rd. 76 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
  UCR140095  Encelia californica George K. Helmkamp 2004-2-6 8251 San Luis Obispo Central Coast, Riverside Road at the low end of Nipomo Mesa beside Division Road 46 Comment
  UCR141010  Acacia longifolia George K. Helmkamp 2004-3-5 8328 San Luis Obispo Central Coast, Oceano, 0.1 mi N of the beach entrance for vehicles 8 Comment
  UCR141941  Albizia lophantha George K. Helmkamp 2003-12-18 8234 San Luis Obispo Central Coast, Arroyo Grande, Courtland Ave. one block south of Grand Ave. 15 Comment
  UCR141946  Lavatera assurgentiflora George K. Helmkamp 2003-12-18 8233 San Luis Obispo Central Coast, Arroyo Grande, Courtland Ave. one block south of Grand Ave. 15 Comment
  UCR142155  Ericameria ericoides George K. Helmkamp 2002-8-21 7630 San Luis Obispo Central Coast, Los Osos at the west end of Howard St. 15 Comment
  UCR146832  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2004-10-8 8842 San Luis Obispo Central Coast, Biddle Regional Park, 7 mi NE of Arroyo Grande along Lopez Drive and Arroyo Grande Creek 136 Comment
  UCR146976  Baccharis salicifolia George K. Helmkamp, E. A. Helmkamp 2004-10-8 8859 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness area, 0.9 mi east of Lopez Lake entrance then 3.3 mi N along Upper Lopez Cyn Rd. 166 Comment
  UCR147245  Clarkia amoena George K. Helmkamp, E. A. Helmkamp 2004-8-15 8789 San Luis Obispo Central Coast, Nipomo Mesa. Mesa Dunes Mobile Home Park along Mesa View Dr., 0.2 mi S. of jct. of Halcyon Rd., SE of Oceano 76 Comment
  UCR14829  Astragalus nuttallii George K. Helmkamp 1975-7-27 s.n. San Luis Obispo Central Coast, 3-4 mi. north of San Simeon Comment
  UCR158435  Oenothera elata subsp. hookeri George K. Helmkamp 2004-6-15 8645 San Luis Obispo Central Coast, Between Oso Flaco Lake and the Pacific Ocean, c. 0.3 mi WNW of the lake 9 Comment
  UCR158735  Camissonia strigulosa George K. Helmkamp, E. A. Helmkamp 2005-4-17 9365 San Luis Obispo Central Coast, Corbett Canyon, 2.3 miles north of Calif. Hwy 227 in Arroyo Grande 81 Comment
  UCR159373A  Eriogonum fasciculatum var. foliolosum George K. Helmkamp, E. A. Helmkamp 2005-5-12 9446 San Luis Obispo Central Coast Ranges, Cholame Hills, 4.0 mi east of San Miguel on Cross Canyon Road 274 Comment
  UCR159785  Clarkia speciosa subsp. speciosa George K. Helmkamp, E. A. Helmkamp 2005-6-12 9635 San Luis Obispo South Coast Ranges, along Calif. Hwy 58 (Calf Canyon Hwy), 4.2 mi east of Santa Margarita 358 Comment
  UCR159842  Polypogon monspeliensis George K. Helmkamp, E. A. Helmkamp 2005-6-12 9628 San Luis Obispo South Coast Ranges, along Calif. Hwy 58 (Calf Canyon Hwy), 4.2 mi east of Santa Margarita 358 Comment
  UCR159992  Daucus pusillus George K. Helmkamp, E. A. Helmkamp 2005-6-12 9667 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
  UCR160128  Bloomeria crocea George K. Helmkamp, E. A. Helmkamp 2005-6-9 9577 San Luis Obispo South Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 7.8 miles northeast of Huasna Townsite Road 338 Comment
  UCR160152  Lotus scoparius var. scoparius George K. Helmkamp, E. A. Helmkamp 2005-6-9 9582 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
  UCR160290  Gamochaeta ustulata George K. Helmkamp 2004-5-1 8556 San Luis Obispo Central Coast, south of Arroyo Grande along Calif. Hwy 1, south of Callender Rd beside Conoco-Phillips refinery 30 Comment
  UCR160294  Achillea millefolium George K. Helmkamp 2004-4-30 8552 San Luis Obispo Central Coast, about 1.1 mi (airline) SW of Arroyo Grande Ave at 23rd St in Oceano 15 Comment
  UCR160559&nbs