Search Results — 2000 specimen records retrieved (1969 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CLARK-A1045-1107  Eriogonum spergulinum George K. Helmkamp 1977-9-1 VI Alpine Sierra Nevada 2 miles east of Luther Pass, corner of US Highway 88 and US Highway 89; roadside; 7300ft; Freel Peak 7.5' Q Comment
  CLARK-A1045-1108  Deschampsia cespitosa George K. Helmkamp 1977-9-1 VI Alpine Sierra Nevada 2 miles east of Luther Pass, corner of US Highway 88 and US Highway 89; roadside; 7300ft; Freel Peak 7.5'Q Comment
Read comments
Jan 10 2015
  CLARK-A1045-1113  Aster alpigenus subsp. andersonii George K. Helmkamp 1977-9-1 V Alpine Sierra Nevada sphagnum bog; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1144  Lupinus polyphyllus subsp. superbus George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1147  Chaenactis douglasii var. rubricaulis George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1148  Solidago canadensis subsp. elongata George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1182  Lupinus andersonii George K. Helmkamp 1977-9-1 VB Alpine Sierra Nevada dry slope under pines; ; Freel Peak 7.5'Q 2346 Comment
  RSA0035727  Collomia linearis George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-14 22205 Alpine Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  RSA0035898  Perideridia lemmonii George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-2 22091 Alpine along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 Comment
  RSA752656  Potentilla glandulosa var. nevadensis George K. Helmkamp, E. A. Helmkamp 2008-7-16 13830 Alpine Along CA-88, 0.8 mile northeast of Carson Pass. 2534 Comment
  RSA794867  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2011-8-19 18115 Alpine Tamarack Road, 0.1 mile east of its junction with Blue Lakes Road. 2485 Comment
  SD143864  Mentzelia laevicaulis G. Helmkamp, E. Helmkamp 1997-9-9 2302 Alpine Junction of highways Ca-89 and Ca-4, south of Markleeville. 1798 Comment
  SD236351  Eschscholzia californica G. 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
  SD236438  Arceuthobium campylopodum G. K. Helmkamp, E. A. Helmkamp 2008-7-22 13904 Alpine Eastern Sierra Nevada Mountains: junction of CA-88/89 and entrance to Crystal Springs campground, 1.2 miles southwest of Woodfords 1829 Comment
  SD241145  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2011-8-19 18108 Alpine Northern Sierra Nevada Mountains: Tamarack Road, 1.2 miles east of its junction with Blue Lakes Road (Pacific Valley 7.5'Q) 2451 Comment
  SD247375  Boechera platysperma George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22094 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Highway, 1.6 miles east of the Caples Lake dam. 2486 Comment
  SEINET1908440  Purshia tridentata var. tridentata G. K. Helmkamp, E. A. Helmkamp 2008-1 13977 Alpine Eastern Sierra Nevada Mountains: along CA-88/89 at the east end of Hope Valley at the West Fork of the Carson River (Freel Peak ). 2103 Comment
  SEINET2441833  Nothocalais alpestris George K. Helmkamp, E. A. Helmkamp 2009-8-4 15391 Alpine Sierra Nevada Mountains: along CA-4 at the trailhead for Ebbetts Pass, 12.8 miles southwest of the CA-4 junction with CA-89. 2637 Comment
  SEINET2442331  Urtica dioica George K. Helmkamp, E. A. Helmkamp 2009-8-4 15366 Alpine Sierra Nevada Mountains: along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River (heenan Lake 7.5' Q). 1786 Comment
  SEINET3260240 Image available Pinus jeffreyi George K. Helmkamp, E. A. Helmkamp 2008-9-22 14151 Alpine Northern Sierra Nevada Mountains; along CA-89 at Woodfords, 0.1 mile south of its junction with CA-88. 1726 Comment
  SEINET3860292  Monardella odoratissima subsp. pallida George K. Helmkamp 2007-7-7 12504 Alpine Northern Sierra Nevada Mountains: Blue Lake Road, 12.0 miles south of its junction with CA-88.; 0 2549 Comment
  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
  SEINET4691393  Hazardia whitneyi var. whitneyi George K. Helmkamp, E. A. Helmkamp 2011-1 18148 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 2.6 miles north of its junction with Tamarack Road. 2436 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
  UCD101498  Eriogonum umbellatum var. polyanthum G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12700 Alpine Northern Sierra Nevada Mountains, Red Lake; east-facing slope along CA-88, just east of Carson Pass. 2378 Comment
  UCD103657  Gayophytum diffusum subsp. parviflorum G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12686 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
  UCD113913  Potentilla gracilis var. fastigiata G. K. Helmkamp 2007-7-7 12492 Alpine Northern Sierra Nevada Mtns: Blue Lake Road, 0.2 mile south of its junction with CA-88. 2200 Comment
  UCD114642  Descurainia incisa subsp. incisa G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11123 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 and coniferous forest. 2509 Comment
  UCD120494  Phacelia hastata subsp. compacta G. K. Helmkamp; E. A. Helmkamp 2006-9-12 11398 Alpine Northern Sierra Nevada Mountains: west end of Caples Lake at a dam; alongside Hwy CA-88. 2335 Comment
  UCD132273  Eucephalus breweri G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11142 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
  UCD98578  Aconogonon davisiae G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11141 Alpine Northern Sierra Nevada Mountains. Wood's Lake Road, 0.3 mile N of the parking area for Wood's Lake. Wood's Creek. 2509 Comment
  UCR102587  Phleum alpinum George K. Helmkamp, E. A. Helmkamp 1997-9-11 2394 Alpine Sierra Nevada Mountains, 0.2 mi northwest of Sonora Pass along CA Hwy 108 2912 Comment
  UCR102590  Ericameria bloomeri George K. Helmkamp, E. A. Helmkamp 1997-9-11 2387 Alpine Sierra Nevada Mountains, 0.2 mi northwest of Sonora Pass along CA Hwy 108 2912 Comment
  UCR103954  Erigeron peregrinus var. angustifolius George K. Helmkamp, E. A. Helmkamp 1997-9-11 2404 Alpine Sierra Nevada Mountains, 0.2 mi northwest of Sonora Pass along CA Hwy 108 2912 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
  UCR122313  Sambucus mexicana George K. Helmkamp, E. A. Helmkamp 1997-9-9 2306 Alpine Sierra Nevada Mountains, Leviathan Lookout Road at the S and W sides of Leviathan Peak, NW of Monitor Pass 2683 Comment
  UCR123966  Lupinus argenteus var. argenteus George K. Helmkamp, E. A. Helmkamp 2001-7-6 6845 Alpine Sierra Nevada Mountains, Calif. Hwy 89, 7.1 mi west of US-395 2470 Comment
  UCR15453  Symphoricarpos acutus George K. Helmkamp 1977-9-1 s.n. Alpine Sierra Nevada Mtns., Edge of aspen grove at Monitor Pass 2530 Comment
  UCR176218  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2006-8-3 11112 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176494  Collinsia torreyi George K. Helmkamp, E. A. Helmkamp 2006-8-3 11124 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176499  Thalictrum fendleri var. fendleri George K. Helmkamp, E. A. Helmkamp 2006-8-3 11126 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176507  Ribes cereum var. cereum George K. Helmkamp, E. A. Helmkamp 2006-8-3 11149 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR178763  Ericameria parryi George K. Helmkamp, E. A. Helmkamp 2006-9-12 11399 Alpine Northern Sierra Nevada Mountains, west end of Caples Lake at a dam; alongside CA Hwy 88 2335 Comment
  UCR189138  Navarretia divaricata subsp. divaricata George K. Helmkamp, E. A. Helmkamp 2007-7-17 12558 Alpine Northern Sierra Nevada Mountains, Blue Lake Road about nine miles south of its junction with CA-88 2511 Comment
  UCR189142  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2007-7-17 12552 Alpine Northern Sierra Nevada Mountains, Blue Lake Road about nine miles south of its junction with CA-88 2511 Comment
  UCR189183  Penstemon heterodoxus George K. Helmkamp 2007-7-7 12501 Alpine Northern Sierra Nevada Mountains, Blue Lake Road, 5.2 miles south of its junction with CA-88; south end of Hope Valley area near Red Lake Creek 2189 Comment
  UCR189205  Lupinus polyphyllus var. burkei George K. Helmkamp 2007-7-7 12482 Alpine Northern Sierra Nevada Mountains, along CA-89, 1.3 miles north of its junction with CA-88 2262 Comment
  UCR189498  Artemisia arbuscula subsp. arbuscula George 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
  UCR189506  Navarretia breweri George K. Helmkamp, E. A. Helmkamp 2007-8-4 12706 Alpine Northern Sierra Nevada Mountains, Woods Lake Road 0.1 mile south of its junction with CA-88 2500 Comment
  UCR190340  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2007-8-4 12678 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
  UCR196794  Ambrosia acanthicarpa George K. Helmkamp, E. A. Helmkamp 2008-7-22 13888 Alpine Eastern Sierra Nevada Mountains, Carson River road, 0.4 mile east of its west junction with CA-88 1713 Comment
  UCR196926  Angelica breweri George K. Helmkamp, E. A. Helmkamp 2008-7-22 13871 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
  UCR197036  Allium campanulatum George K. Helmkamp, E. A. Helmkamp 2008-7-16 13820 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR201754  Bromus carinatus George K. Helmkamp, E. A. Helmkamp 2008-8-8 13983 B Alpine Northern Sierra Nevada Mountains, along CA-89 at Grass Lake, 0.9 mile west of Luther Pass 2354 Comment
  UCR202557  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2008-8-8 13977 Alpine Northern Sierra Nevada Mountains, along CA-89 at Grass Lake, 0.9 mile west of Luther Pass 2354 Comment
  UCR202566  Pinus jeffreyi George K. Helmkamp, E. A. Helmkamp 2008-9-22 14151 Alpine Northern Sierra Nevada Mountains, along CA-89 at Woodfords, 0.1 mile south of its junction with CA-88 1726 Comment
  UCR202663  Lupinus polyphyllus var. burkei George K. Helmkamp, E. A. Helmkamp 2008-8-8 13985 Alpine Northern Sierra Nevada Mountains, along CA-89, 1.4 miles east of Luther Pass 2262 Comment
  UCR206598  Eriogonum umbellatum var. polyanthum George K. Helmkamp, Ann Kerchner 2009-7-25 15295 Alpine Sierra Nevada Mountains, Blue Lakes Road, 8.5 miles south of its junction with CA-88 2491 Comment
  UCR209694  Urtica dioica subsp. holosericea George K. Helmkamp, E. A. Helmkamp 2009-8-4 15366 Alpine Sierra Nevada Mountains, along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River 1787 Comment
  UCR209699  Sambucus mexicana George K. Helmkamp, E. A. Helmkamp 2009-8-4 15364 Alpine Sierra Nevada Mountains, along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River 1787 Comment
  UCR209707  Chenopodium botrys George K. Helmkamp, E. A. Helmkamp 2009-8-4 15361 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
  UCR219133  Potentilla glandulosa subsp. nevadensis George K. Helmkamp, E. A. Helmkamp 2010-7-13 16555 Alpine Northern Sierra Nevada Mountains, Sno-Park area at Carson Pass; northeast side of CA-88 across from the trailside parking area 2613 Comment
  UCR229399  Cryptantha affinis George K. Helmkamp, E. A. Helmkamp 2011-8-13 18095 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
  UCR229432  Monardella odoratissima subsp. pallida George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18083 Alpine Northern Sierra Nevada Mountains, south side of Bear Valley Village, along CA Hwy 4 2169 Comment
  UCR234540  Collomia linearis George K. Helmkamp, E. A. Helmkamp 2011-8-19 18143 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 1.4 miles north of its junction with Tamarack Road 2506 Comment
  UCR234611  Poa secunda George K. Helmkamp, E. A. Helmkamp 2011-8-19 18103 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 6.6 miles south of its junction with CA-88 2296 Comment
  UCR234614  Polygonum douglasii subsp. douglasii George K. Helmkamp, E. A. Helmkamp 2011-8-19 18100 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 6.6 miles south of its junction with CA-88 2296 Comment
  UCR234619  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, E. A. Helmkamp 2011-8-19 18117 Alpine Northern Sierra Nevada Mountains, Tamarack Road, 0.1 mile east of its junction with Blue Lakes Road 2485 Comment
  UCR235316  Ericameria nauseosa var. hololeuca George K. Helmkamp, William Barnes 2010-9-4 16941 Alpine Northern Sierra Nevada Mountains, Red Vista Road, 0.6 mile southeast of its junction with CA-88 just east of Carson Pass 2553 Comment
  UCR245556  Agrostis idahoensis George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22247 Alpine Northern Sierra Nevada Mountains, along CA-4, 12.4 miles southwest of the CA-89 junction and just north of Kinney Reservoir 2540 Comment
  UCR245567  Ipomopsis aggregata subsp. formosissima George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22253 Alpine Northern Sierra Nevada Mountains, along CA-89, 0.6 mile south of Markleeville 1691 Comment
  UCR245575  Spiraea densiflora George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22258 Alpine Northern Sierra Nevada Mountains, along CA-89, 0.6 mile south of Markleeville 1691 Comment
  UCR245725  Eriogonum spergulinum George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22262 Alpine Northern Sierra Nevada Mountains, along CA-89, 0.6 mile south of Markleeville 1691 Comment
  UCR245852  Epilobium brachycarpum George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22230 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR247263  Symphoricarpos rotundifolius George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22187 Alpine Northern Sierra Nevada Mountains, along CA-89, 1.3 miles southwest of Monitor Pass 2503 Comment
  UCR248679  Elymus trachycaulus subsp. trachycaulus George K. Helmkamp, Belinda Pesheck 2013-7-14 21057 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
  UCR248684  Carex George K. Helmkamp, Belinda Pesheck 2013-7-14 21059 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
  UCR248689  Lactuca serriola George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22227 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR248692  Epilobium George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22223 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR248700  Penstemon George K. Helmkamp, Belinda Pesheck 2013-7-14 21045 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
  UCR252795  Monardella odoratissima subsp. pallida George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22100 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 Comment
  UCR253093  Antennaria corymbosa George K. Helmkamp, Belinda Pesheck 2013-7-14 21073 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR257761  Juncus phaeocephalus var. paniculatus George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19696 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, at the west side of Carson Spur, 1.7 air mi west (278 deg. ) of Kirkwood 2436 Comment
  UCR257784  Sphenosciadium capitellatum George K. Helmkamp, Amy Barnes 2012-8-12 19624 Alpine Northern Sierra Nevada Mountains, along CA-89/Carson Pass Hwy in West Carson Canyon, 1.4 miles east of the junction with CA-88 2034 Comment
  UCR257841  Polemonium pulcherrimum subsp. pulcherrimum George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19714 Alpine Northern Sierra Nevada Mountains, along CA-88 at the Red Vista Rd. junction, east end of Carson Pass near Red Lake 2619 Comment
  UCR257939  Angelica breweri George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19712 Alpine Northern Sierra Nevada Mountains, along CA-88 at the Red Vista Rd. junction, east end of Carson Pass near Red Lake 2619 Comment
  UCR257944  Deschampsia cespitosa subsp. cespitosa George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19717 Alpine Northern Sierra Nevada Mountains, along CA-88 at the Red Vista Rd. junction, east end of Carson Pass near Red Lake 2619 Comment
  UCR257949  Stipa occidentalis var. pubescens George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19726 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
  UCR258168  Aster occidentalis var. occidentalis George K. Helmkamp, Amy Barnes 2014-8-27 23069 Alpine Northern Sierra Nevada Mountains, West Fork Carson River valley, along CA-89, 2.1 miles southwest of Woodfords 1878 Comment
  UCR261625  Chenopodium berlandieri George K. Helmkamp, Amy Barnes 2014-9-16 23098 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
  UCR88277  Frasera speciosa George K. Helmkamp 1995-9-23 3- 20 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  UCR88278  Lupinus lepidus var. sellulus George K. Helmkamp 1995-9-23 3- 22 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  UCR88330  Eriophyllum lanatum var. integrifolium George K. Helmkamp 1995-9-23 3- 14 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  UC2015602  Phacelia corymbosa G. Helmkamp 1995-9-23 3 -9 Alpine West side of Sonora Pass just beyond the Mono County line Comment
  CAS-BOT-BC438821  Robinia pseudoacacia George K. Helmkamp; Mary Alice Barnes 2013-4-24 20388 Amador Northern Sierra Nevada Mountains Foothills: Along CA-26 (Red Corral/West Point-Pioneer Rd.), 0.7 mile west of the crossing over North Fork Mokelumne River. 704 Comment
  CAS-BOT-BC526872  Avena fatua George K. Helmkamp 2014-4-5 22675 Amador Eastern San Joaquin Valley: Sutter Creek--Ione Rd, 1.2 mi S of its jct with CA-124 196 Comment
  CDA36242  Leontodon taraxacoides G. K. Helmkamp, E. A. Helmkamp 2007-4-23 11795 Amador Foothills, Northern Sierra Nevada Mountains; Along Calif. Hwy 124, 0.25 mile from its junction with Hwy 16. Comment
  CDA36371  Trifolium hirtum G. K. Helmkamp, E. A. Helmkamp 2007-4-23 11600 Amador Foothills, Northern Sierra Nevada Mountains; Along CA Hwy 124, 0.25 mile from its junction with Hwy 16. Comment
  CHSC114151  Juglans hindsii G. K. Helmkamp; E. A. Helmkamp 2009-8-24 15522 Amador Foothills, northern Sierra Nevada Mountains: Shanandoah Road, 1.2 miles northeast of Plymouth and just north of its junction with Fiddletown Road. 363 Comment
  RSA0013374  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2010-9-1 16874 Amador Northern Sierra Nevada Mountains: along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, e. 2.75 mi NNW of Upper Bear River Reservoir. 2162 Comment
  RSA0039240  Penstemon rydbergii var. oreocharis George K. Helmkamp, Elizabeth A. Helmkamp 2013-7-10 21020 Amador Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  RSA0049984  Lotus nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 2012-6-6 19135 Amador Panther Creek Road, 1.5 miles south of its junction with CA-88, 5.0 mi. west (267 deg ) of Bear River Reservoir dam 1590 Comment
  RSA0057867  Ericameria nauseosa var. speciosa George K. Helmkamp, Elizabeth A. Helmkamp 2013-9-7 22278 A Amador Tragedy Spring Road, 0.17 mi. above junction with Hwy 88/Carson Pass Rd., at the entrance path to the spring 2425 Comment
  RSA0081176  Polygonum punctatum George K. Helmkamp, E. A. Helmkamp 2006-10-6 11471 Amador Along Calif. Hwy 49 beside Big Indian Creek; 2.2 miles south of El Dorado County line. 271 Comment
  RSA0093527  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2012-6-26 19255 Amador Northern Sierra Nevada Mountains. Panther Creek Road, 0.4 mile south of its junction with CA-88/Carson Pass Hwy and W of Lower Bear Reservoir. 1643 Comment
  RSA0105156  Eschscholzia californica George K. Helmkamp 2014-3-14 22568 Amador West end Sacramento Valley: Willow Creek Road, 1.1 miles south of Hwy E-16. 253 Comment
  RSA739789  Penstemon roezlii George K. Helmkamp 2007-6-29 12431 Amador Sandy Cove picnic area southeast of CA-88 beside the west edge of Silver Lake 2244 Comment
  RSA795033  Juncus effusus var. exiguus George K. Helmkamp, E. A. Helmkamp 2011-8-6 17968 Amador Ellis Road, 2.1 miles south of its junction with CA-88 1794 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
  SD235044  Penstemon roezlii G. K. Helmkamp, E. A. Helmkamp 2008-6-23 13734 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. 2054 Comment
  SD237490  Juglans hindsii G. K. Helmkamp, E. A. Helmkamp 2009-10-11 15679 Amador Sacramento Valley/Sierra Nevada Foothills: Willow Creek Road just south of its junction with CA-16, 3.3 mi. SW (235a^z) of Plymouth (Irish Hill 7.5'Q) 192 Comment
  SD237546  Collomia heterophylla G. K. Helmkamp, E. A. Helmkamp 2010-6-23 16344 Amador Sierra Nevada Mountains Foothills: Sutter Creek Road, 7.2 miles northeast of its junction with old CA-49 in Sutter Creek village (Pine Grove 7.5'Q) 473 Comment
  SD239733  Acmispon glaber var. glaber George K. Helmkamp, E. A. Helmkamp 2011-5-19 17292 Amador Northern Sierra Nevada Mountains Foothills: NW of Pardee Reservoir, 0.1 mile east of Rock Creek Road on a gravel spur leading to houses, 4.65 mi SW (220a^z) of Jackson (Jackson 7.5'Q) 280 Comment
  SD243173  Sidalcea malviflora subsp. asprella George K. Helmkamp, E. A. Helmkamp 2010-9-1 16915 Amador Northern Sierra Nevada Mountains: Dufrene Road 0.7 mile east of its junction with CA-88, north of Lower Bear River Reservoir. Spring area. 2044 Comment
  SD247267  Cyperus niger George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22154 Amador Sierra Nevada Mountains Foothills: Sutter Creek-Volcano Road, 11.3 miles northeast of the wotn of Sutter Creek (Pine Grove 7.5'Q) 582 Comment
  SD247268  Allium campanulatum George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21012 Amador Northern Sierra Nevada Mountains: Passe Road at the southern end of Silver Lake, off ighway 88/Carson Pass Hwy (Tragedy Soring 7.5'Q) 2191 Comment
  SD247488  Polygonum aviculare George K. Helmkamp, Elizabeth Helmkamp 2012-9-7 22281 Amador Northern Sierra Nevada Mountains: on the south side of CA-88/Carson Pass Hwy, c. 0.3 mile west of the junction with Bear River Reservoir Road (Peddler Hill 7.5'Q) 1933 Comment
  SD260184  Leontodon saxatilis subsp. saxatilis George K. Helmkamp, Mary Alice Barnes 2013-5-17 20611 Amador Northern Sierra Nevada Mountains Foothills: Stony Creek Road, 6.8 miles southwest of Jackson, 0.57 mi. NE (20a^z) of Chrome Mountain. 302 Comment
  SEINET10237164  Cyperus niger George K. Helmkamp, Elizabeth Helmkamp 2013-1 22154 Amador Sierra Nevada Mountains Foothills: Sutter Creek-VOlcano ROad, 11.3 miles northeast of the town of Sutter Creek 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
  SEINET11265839  Silene gallica George Helmkamp, E. A. Helmkamp 2011-6-7 17477 Amador Northern Sierra Nevada Mountains Foothills: Sutter Creek Road, 3.4 miles west of Volcano (Pine Grove 7.5' Q.); 0 491 Comment
  SEINET11265992  Gilia leptalea subsp. leptalea George Helmkamp, E. A. Helmkamp 2011-8-6 17959 Amador Northern Sierra Nevada Mountains: Ellis Road, 2.1 miles south of its junction with CA-88 (Peddler Hill 7.5' Q.); 0 1794 Comment
  SEINET11266055  Linanthus ciliatus George Helmkamp, E. A. Helmkamp 2012-6-26 19279 Amador Northern Sierra Nevada Mountains: Panther Creek Road, 4.1 miles south of its junction with CA-88/Carson Pass Hwy. and W of Lower Bear Reservoir (Peddler Hill 7.5; Q.); 0 1518 Comment
  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
  SEINET13276781 Image available Agrostis idahoensis George K. Helmkamp, Amy Barnes 2014-1 23145 Amador Northern Sierra Nevada Mountains: Plasse Road at the south end of Silver Lake and 0.1 mile north of Plasse's Resort (Tragedy Spring 7.5' Q.) 2214 Comment
  SEINET13276822 Image available Mimulus aurantiacus George K. Helmkamp, Mary Alice Barnes 2013-1 20612 Amador Northern Sierra Nevada Mountains Foothills: Stony Creek Road, 6.8 miles southwest of Jackson, 0.57 mi. NE (20 deg. ) of Chrome Mountain (Jackson 7.5' Q.) 302 Comment
  SEINET2441345  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 (Peddler Hill 7.5' Q.). 1590 Comment
  SEINET2473442 Image available Eragrostis pectinacea var. miserrima George K. Helmkamp, E. A. Helmkamp 2007-1 12818 Amador Northern Sierra Nevada Mountains Foothills; along Hwy CA-49 at the south end of Plymouth 320 Comment
  SEINET2473483 Image available Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2007-1 12816 Amador Northern Sierra Nevada Mountains Foothills; along Hwy CA-49 at the south end of Plymouth 320 Comment
  SEINET2473484 Image available Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2007-1 12810 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
  SEINET3238909 Image available Calochortus monophyllus George K. Helmkamp, E. A. Helmkamp 2008-5-4 13393 Amador Sierra Nevada Mountains Foothills; along Tiger Creek Road, 0.3 mi east of the turnoff to Tiger Creek Reservoir. 774 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
  SEINET3245874  Ericameria arborescens G. K. Helmkamp, E. A. Helmkamp 2009-1 15625 Amador Northern Sierra Nevada Mountains: Panther Creek Road, 4.9 miles south of its junction with CA-88, 6.1 air mi. SW of Bear River Reservoir. 1483 Comment
  SEINET3246021  Symphyotrichum foliaceum var. parryi G. K. Helmkamp, E. A. Helmkamp 2007-1 12743 Amador Northern Sierra Nevada Mountains: along Hwy CA-88, 1.0 mile south of the junction with Mormon Emigrant Trail. 2172 Comment
  SEINET3821904 Image available Bromus suksdorfii George K. Helmkamp, E. A. Helmkamp 2012-7-14 19421 Amador Northern Sierra Nevada Mountains, Tragedy Spring, near Canyon Pass Hwy, along Tragedy Spring Road 0.3 mi east of its junction with CA-88 (Tragedy Spring 7.5' Q) 2420 Comment
  SEINET3828558  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2012-1 18789 Amador Northern Sierra Nevada Mountains Foothills: Bunker Hill Road at the junction with N. Amador Road, c. 0.5 mi N of Amador City. 7.5 299 Comment
  SEINET3856752 Image available Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2011-6-2 17616 Amador Northern Sierra Nevada Mountains Foothills: Sutter-Ione Road, 2.7 miles W of its junction with CA-49, 2.9 mi SW of Amador City 308 Comment
  SEINET4560538  Cryptantha affinis George K. Helmkamp, E. A. Helmkamp 2011-1 18015 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
  SEINET949814  Poaceae G. K. Helmkamp, Elizabeth Helmkamp 2006-1 10359 Amador Northern Sierra Nevada Foothills: Along CA Hwy 88, 0.9 mi. S of El Dorado County line at Enterprise (Fiddletown 7.5' Q.). 274 Comment
  UC2044613  Madia glomerata George K. Helmkamp with E. A. Helmkamp 2012-7-14 19395 Amador Northern Sierra Nevada Mountains edge of Martin Meadow along CA-88 (Carson Pass Highway), 2.2 miles north of Silver Lake. (Caples Lake 7.5' Q.) Comment
  UCD100023  Polygonum aviculare subsp. depressum G. K. Helmkamp; E. A. Helmkamp 2006-10-23 11565 Amador Central Valley/Northern Sierra Nevada Mountains Foothills: along Hwy. CA-16, 0.2 mile east of Waits Station, southwest of Plymouth. 305 Comment
  UCD103420  Geranium molle G. K. Helmkamp; Elizabeth Helmkamp 2006-5-9 10348 Amador Northern Sierra Nevada foothills: ESE of Sacramento; 3.2 mi. E of Pine Grove along CA Hwy 88. 841 Comment
  UCD105363  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-9-4 12902 Amador Northern Sierra Nevada Mountains. Along CA-89 south of Drytown and near the crossing of Sutter Creek. 241 Comment
  UCD118953  Dodecatheon hendersonii G. K. Helmkamp; E. A Helmkamp 2007-4-23 11786 Amador Northern Sierra Nevada Mountains: along Bell Road beside Plymouth Creek just east of CA-49 in the vicinity of Enterprise. 302 Comment
  UCD120252  Nemophila menziesii var. menziesii G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11791 Amador Northern Sierra Nevada Mountains: along Bell Road beside Plymouth Creek just east of CA-49 in the vicinity of Enterprise. 302 Comment
  UCD124324  Penstemon newberryi var. newberryi G. K. Helmkamp 2007-6-29 12451 Amador Northern Sierra Nevada Mountains: South side of CA-88, 0.1 mile east of Carson spur summit. 2423 Comment
  UCD129587  Blennosperma nanum var. nanum G. K. Helmkamp; E. A. Helmkamp 2007-3-17 11637 Amador Sacramento Valley/Sierra Nevada Foothills: Hwy. CA-49, 0.3 mile south of Plymouth. 335 Comment
  UCD131975  Erigeron glacialis G. K. Helmkamp 2007-6-29 12458 Amador Northern Sierra Nevada Mountains: South side of CA-88, 0.2 mile west of Carson Spur summit. 2420 Comment
  UCD132553  Grindelia camporum G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-29 10809 Amador Northern Sierra Nevada: northbound along Highway CA-26, 0.6 mile past the North Fork of Mokelumne River. 732 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
  UCD134211  Madia elegans G. K. Helmkamp; E. A. Helmkamp 2007-9-4 12891 Amador Northern Sierra Nevada Mountains: Along CA-88 at Mile-49, 3.1 miles east of Hams Station. 1860 Comment
  UCD135543  Senecio integerrimus G. K. Helmkamp 2007-6-29 12420 Amador Northern Sierra Nevada Mountains; Shot Rock Vista picnic area along CA-88, 0.9 mile east of its junction with Mormon Emigrant Trail. 2329 Comment
  UCD60227  Arctostaphylos glauca G. K. Helmkamp 2006-5-9 10323 Amador Northern Sierra Nevada foothills: Climax Road southwest of Pine Grove, 0.1 mile west of Hwy. CA-88. 701 Comment
  UCD63228  Bromus hordeaceus G. K. Helmkamp; E. A. Helmkamp 2007-4-5 11748 Amador Northern Sierra Nevada Mountains: along CA-49, 0.2 miles W of Amador City. 309 Comment
  UCD96143  Ranunculus hebecarpus G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11779 Amador Northern Sierra Nevada Mountains; along Bell Road beside Plymouth Creek, just east of CA-49 in the vincity of Enterprise. 302 Comment
  UCR173470  Acer macrophyllum George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10346 Amador Northern Sierra Nevada Foothills, ESE of Sacramento; 3.2 mi. east of Pine Grove along Calif. Hwy 88 841 Comment
  UCR173515  Geranium molle George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10348 Amador Northern Sierra Nevada Foothills, ESE of Sacramento; 3.2 mi. east of Pine Grove along Calif. Hwy 88 841 Comment
  UCR173638  Plagiobothrys nothofulvus George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10160 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
  UCR173833  Triteleia laxa George K. Helmkamp, Elizabeth Helmkamp 2006-5-6 10303 Amador Northern Sierra Nevada Foothills, along Calif. Hwy 49, 0.3 mile south of Drytown 226 Comment
  UCR173999  Cotinus coggygria George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10804 Amador Northern Sierra Nevada foothills, northbound along Calif. Hwy 26, 0.6 mile past the North Fork of Mokelumne River 732 Comment
  UCR174003  Clarkia williamsonii George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10806 Amador Northern Sierra Nevada foothills, northbound along Calif. Hwy 26, 0.6 mile past the North Fork of Mokelumne River 732 Comment
  UCR174195  Festuca arundinacea George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10330 Amador Northern Sierra Nevada foothills, Grass Valley Creek, 1.2 miles east of Pine Grove along Calif. Hwy 88 762 Comment
  UCR179792  Spergularia rubra George K. Helmkamp, E. A. Helmkamp 2006-10-6 11476 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49, 1.1 miles south of Plymouth 314 Comment
  UCR181950  Typha angustifolia George K. Helmkamp, E. A. Helmkamp 2006-10-23 11572 Amador Central Valley/ Northern Sierra Nevada Foothills, along Calif. Hwy 16, 0.2 mile east of Waits Station, southwest of Plymouth 305 Comment
  UCR182143  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2006-10-23 11561 Amador Central Valley/ Northern Sierra Nevada Foothills, along Calif. Hwy 16, 0.2 mile east of Waits Station, southwest of Plymouth 305 Comment
  UCR182151  Amaranthus albus George K. Helmkamp, E. A. Helmkamp 2006-10-23 11570 Amador Central Valley/ Northern Sierra Nevada Foothills, along Calif. Hwy 16, 0.2 mile east of Waits Station, southwest of Plymouth 305 Comment
  UCR182300  Euphorbia oblongata George K. Helmkamp, E. A. Helmkamp 2006-10-8 11500 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 26, 0.6 mile west of North Fork of the Mokelumne River 732 Comment
  UCR183106  Leontodon taraxacoides George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10335 Amador Northern Sierra Nevada foothills, Grass Valley Creek, 1.2 miles east of Pine Grove along Calif. Hwy 88 762 Comment
  UCR184850  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2007-4-26 11820 Amador Foothills, northern Sierra Nevada Mountains, along Calif. E-16, 0.7 mile south of River Pines 610 Comment
  UCR184967  Geranium molle George K. Helmkamp, E. A. Helmkamp 2007-4-23 11804 Amador Foothills, Northern Sierra Nevada Mountains, junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione 229 Comment
  UCR184975  Scleranthus annuus George K. Helmkamp, E. A. Helmkamp 2007-4-23 11813 Amador Foothills, Northern Sierra Nevada Mountains, junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione 229 Comment
  UCR185332  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2007-4-23 11798 Amador Foothills, Northern Sierra Nevada Mountains, along Calif. Hwy 124, 0.25 mile from its junction with Hwy 16 252 Comment
  UCR187301  Lupinus microcarpus var. densiflorus George K. Helmkamp, E. A. Helmkamp 2007-4-5 11744 Amador Foothills, Northern Sierra Nevada Mountains, along CA-49, 0.2 mile west of Amador City 309 Comment
  UCR189464  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2007-8-16 12739 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.0 mile south of the junction with Mormon Emigrant Trail 2172 Comment
  UCR189518  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2007-8-16 12763 Amador Northern Sierra Nevada Mountains, along the south side of Bear River Reservoir just east of the spillway 1777 Comment
  UCR190555  Thalictrum fendleri var. fendleri George K. Helmkamp 2007-6-29 12456 Amador Northern Sierra Nevada Mountains, south side of CA-88, 0.2 mile west of Carson Spur summit 2421 Comment
  UCR190560  Eriogonum umbellatum var. polyanthum George K. Helmkamp 2007-6-29 12448 Amador Northern Sierra Nevada Mountains, south side of CA-88, 0.1 mile east of Carson Spur summit 2424 Comment
  UCR190673  Holocarpha virgata subsp. virgata George K. Helmkamp, E. A. Helmkamp 2007-9-4 12903 Amador Northern Sierra Nevada Mountains Foothills, along CA-49 south of Drytown and near the crossing of Sutter Creek 241 Comment
  UCR190843  Lupinus fulcratus George K. Helmkamp 2007-6-29 12430 Amador Northern Sierra Nevada Mountains, Sandy Cove picnic area southeast of CA-88 beside the west edge of Silver Lake 2244 Comment
  UCR191126  Muhlenbergia filiformis George K. Helmkamp, E. A. Helmkamp 2007-8-16 12768 Amador Northern Sierra Nevada Mountains, along the south side of Bear River Reservoir just east of the spillway 1777 Comment
  UCR196820  Nemophila maculata George K. Helmkamp 2008-6-17 13688 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
  UCR196832  Penstemon newberryi var. newberryi George K. Helmkamp 2008-6-17 13684 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road along the south side of Bear River Reservoir 1797 Comment
  UCR196848  Senecio integerrimus var. major George K. Helmkamp 2008-6-17 13677 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR197357  Platanthera leucostachys George K. Helmkamp, E. A. Helmkamp 2008-6-23 13727 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
  UCR197611  Spergularia rubra George K. Helmkamp, E. A. Helmkamp 2008-6-23 13731 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
  UCR197633  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2008-6-9 13623 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.1 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station 1652 Comment
  UCR197643  Carex specifica George K. Helmkamp, E. A. Helmkamp 2008-6-23 13744 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
  UCR197651  Horkelia tridentata subsp. tridentata George K. Helmkamp, E. A. Helmkamp 2008-6-9 13615 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.1 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station 1652 Comment
  UCR197799  Fritillaria micrantha George K. Helmkamp, E. A. Helmkamp 2008-6-9 13622 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.1 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station 1652 Comment
  UCR197832  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2008-6-9 13620 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.1 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station 1652 Comment
  UCR198463  Sanicula crassicaulis George K. Helmkamp, E. A. Helmkamp 2008-3-12 13173 Amador Sierra Nevada Mountains Foothills, along Tonzi Road 0.3 miles west of its junction with CA-49, west of Sutter Creek 360 Comment
  UCR198548  Draba verna George K. Helmkamp, E. A. Helmkamp 2008-3-12 13146 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
  UCR200903  Gilia leptalea subsp. leptalea George K. Helmkamp, E. A. Helmkamp 2008-8-30 14056 Amador Northern Sierra Nevada Mountains, along Cole Creek Road near the crossing of Cole Creek 6.8 miles east of the Bear River Reservoir dam 1857 Comment
  UCR205160  Foeniculum vulgare George K. Helmkamp, E. A. Helmkamp 2008-10-30 14304 Amador Northern Sierra Nevada Mountains Foothills, junction of CA-49 and Fiddletown Road at the north end, but within the city limits, of Plymouth 311 Comment
  UCR217843  Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 2010-5-31 16152 Amador Sierra Nevada Mountains Foothills, Church Street, becoming Sutter Creek-Volcano Road, 0.2 mile east of the village of Sutter Creek 402 Comment
  UCR218200  Calochortus venustus George K. Helmkamp, E. A. Helmkamp 2010-5-31 16176 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 2.8 miles east of the village of Sutter Creek 427 Comment
  UCR218212  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2010-5-31 16189 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 3.3 miles east of the village of Sutter Creek 413 Comment
  UCR219025  Galium bolanderi George K. Helmkamp, E. A. Helmkamp 2010-6-23 16351 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
  UCR219034  Microseris nutans George K. Helmkamp, E. A. Helmkamp 2010-7-13 16522 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219039  Ribes cereum var. cereum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16507 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219044  Viola pinetorum subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16514 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219049  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16519 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219172  Nicotiana acuminata var. multiflora George K. Helmkamp, E. A. Helmkamp 2009-9-22 15635 Amador Sierra Nevada Mountains Foothills, junction of Shenandoah Road (CA-16) and Steiner Road, southwest of River Pines 750 Comment
  UCR219178  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2010-6-23 16362 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
  UCR219182  Grindelia nana George K. Helmkamp, E. A. Helmkamp 2010-6-23 16364 Amador Sierra Nevada Mountains Foothills, Rams Horn Grade, 1.8 rd. miles northeast of Volcano at the junction with Sutter Creek Road 730 Comment
  UCR219188  Amaranthus retroflexus George K. Helmkamp, E. A. Helmkamp 2009-9-22 15640 Amador Sierra Nevada Mountains Foothills, junction of Shenandoah Road (CA-16) and Steiner Road, southwest of River Pines 750 Comment
  UCR219191  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2009-9-22 15637 Amador Sierra Nevada Mountains Foothills, junction of Shenandoah Road (CA-16) and Steiner Road, southwest of River Pines 750 Comment
  UCR230105  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2011-5-19 17303 Amador Lower Sierra Nevada Foothills, Rock Creek Road, 2.8 miles northeast of the junction with Pardee Dam Road, 4.9 mi. SW (221 deg. ) of Jackson 305 Comment
  UCR230119  Quercus wislizeni var. wislizeni George K. Helmkamp, E. A. Helmkamp 2011-5-10 17243 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
  UCR230656  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2011-5-10 17233 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
  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
  UCR232210  Collinsia bartsiifolia var. bartsiifolia George K. Helmkamp, E. A. Helmkamp 2011-6-7 17492 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
  UCR233127B  Horkelia tridentata subsp. tridentata George K. Helmkamp, E. A. Helmkamp 2011-8-6 17985 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233131B  Cryptantha affinis George K. Helmkamp, E. A. Helmkamp 2011-8-6 17996 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233141B  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2010-3-26 15768 Amador Eastern San Joaquin Valley/ Sierra Nevada Foothills, low foothills along CA-16, 6.8 miles west of Plymouth near Forest Home Rd. 177 Comment
  UCR233193B  Genista monspessulana George K. Helmkamp, E. A. Helmkamp 2010-4-7 15844 Amador Northeast San Joaquin Valley/ lower Sierra Nevada Foothills, junction of CA-88 and CA-124, south of Ione 90 Comment
  UCR233255  Bromus orcuttianus George K. Helmkamp, E. A. Helmkamp 2011-8-6 17989 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233408  Cordylanthus tenuis subsp. tenuis George K. Helmkamp, E. A. Helmkamp 2011-8-6 17973 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR233410  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2011-8-6 17963 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR234605  Rorippa curvipes var. truncata George K. Helmkamp, E. A. Helmkamp 2011-8-6 18018 Amador Northern Sierra Nevada Mountains, along dirt road 0.3 mile east of Bear River Reservoir Road, from a point 0.7 mile south of CA-88 1986 Comment
  UCR237092  Carex nebrascensis George K. Helmkamp, E. A. Helmkamp 2012-7-14 19423 Amador Northern Sierra Nevada Mountains, Tragedy Spring, near Carson Pass Hwy, along Tragedy Spring Road 0.3 mile east of its junction with CA-88 2421 Comment
  UCR237272  Hackelia floribunda George K. Helmkamp, E. A. Helmkamp 2012-7-14 19394 Amador Northern Sierra Nevada Mountains, edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 miles north of Silver Lake 2317 Comment
  UCR237278  Achnatherum occidentale subsp. occidentale George K. Helmkamp, E. A. Helmkamp 2012-7-2 19300 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam of Lower Bear River Reservoir 1774 Comment
  UCR237282  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2012-7-2 19304 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam of Lower Bear River Reservoir 1774 Comment
  UCR237288  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2012-7-2 19312 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
  UCR237291  Muhlenbergia filiformis George K. Helmkamp, E. A. Helmkamp 2012-7-2 19309 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
  UCR237598  Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 2012-3-3 18602 Amador Northern Sierra Nevada Mountains Foothills, along CA-124 (E Plymouth Hwy), 1.2 miles northeast of Ione 169 Comment
  UCR237721  Eucephalus breweri George K. Helmkamp, E. A. Helmkamp 2012-7-14 19381 Amador Northern Sierra Nevada Mountains, Shot Rock Vista Rest Stop along CA-88 (Carson Pass Hwy), 1 mile west of the junction with Mormon Emigrant Trail 2329 Comment
  UCR237737  Heracleum maximum George K. Helmkamp, E. A. Helmkamp 2012-7-14 19400 Amador Northern Sierra Nevada Mountains, edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 miles north of Silver Lake 2317 Comment
  UCR240729  Lactuca serriola George K. Helmkamp, E. A. Helmkamp 2012-10-5 19963 Amador Northern Sierra Nevada Mountains Foothills, city of Sutter Creek along old CA-49 (Hanford St.) at the junction with Spanish St. 389 Comment
  UCR240890  Bromus carinatus var. carinatus George K. Helmkamp, E. A. Helmkamp 2012-6-6 19121 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.1 miles west of Cooks Station 1439 Comment
  UCR241972  Polygonum hydropiperoides George K. Helmkamp, E. A. Helmkamp 2012-9-7 19775 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
  UCR241982  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2012-9-7 19786 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
  UCR242317  Gilia capitata subsp. pedemontana George K. Helmkamp, E. A. Helmkamp 2011-6-17 17602 Amador Northern Sierra Nevada Mountains Foothills, along CA-26, 0.1 mile west of the Calaveras Co. line at the bridge over the North Fork Mokelumne River, 1.6 mi. SE (115 deg. ) of Pioneer 652 Comment
  UCR242357  Trifolium cyathiferum George K. Helmkamp, E. A. Helmkamp 2010-9-1 16870 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
  UCR242607  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2010-4-3 15804 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
  UCR242794  Penstemon George K. Helmkamp, E. A. Helmkamp 2010-9-1 16917 Amador Northern Sierra Nevada Mountains, Dufrene Road 0.7 mile east of its junction with CA-88, north of Lower Bear River Reservoir 2044 Comment
  UCR242820  Gilia capillaris George K. Helmkamp, E. A. Helmkamp 2010-9-1 16883 Amador Northern Sierra Nevada Mountains, along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, c. 2.75 mi. NNW of Upper Bear River Reservoir 2162 Comment
  UCR242832  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2010-9-1 16874 Amador Northern Sierra Nevada Mountains, along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, c. 2.75 mi. NNW of Upper Bear River Reservoir 2162 Comment
  UCR246650  Cryptantha simulans George K. Helmkamp, E. A. Helmkamp 2012-6-6 19128 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.1 miles west of Cooks Station 1439 Comment
  UCR248367  Stipa lemmonii George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21015 Amador Northern Sierra Nevada Mountains, Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  UCR248375  Aster occidentalis var. occidentalis George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21016 Amador Northern Sierra Nevada Mountains, Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  UCR248385  Phleum pratense George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21009 Amador Northern Sierra Nevada Mountains, Plasse Road toward Silver Lake, 0.3 mile south of CA-88/Carson Pass Hwy 2276 Comment
  UCR248424  Leucanthemum vulgare George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21005 Amador Northern Sierra Nevada Mountains, Plasse Road toward Silver Lake, 0.3 mile south of CA-88/Carson Pass Hwy 2276 Comment
  UCR250276  Salvia sonomensis George K. Helmkamp, E. A. Helmkamp 2009-3-26 14482 Amador Sierra Nevada Mtns. Foothills, south of Ione, CA-88 between Buena Vista Rd. and South Church St. 125 Comment
  UCR250631  Epilobium ciliatum George K. Helmkamp, E. A. Helmkamp 2007-8-16 12762 Amador Northern Sierra Nevada Mountains, along the south side of Bear River Reservoir just east of the spillway 1777 Comment
  UCR252936  Rubus parviflorus George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20988 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 Comment
  UCR253194  Lotus purshianus var. purshianus George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22160 Amador Sierra Nevada Mountains Foothills, Along CA-49, just northeast of its junction with Randolph Court, c. 1 km S of Plymouth 326 Comment
  UCR253199  Asclepias fascicularis George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22135 Amador Sierra Nevada Mountains Foothills, city of Sutter Creek at the junction of Hanford St. and Spanish St. 384 Comment
  UCR253232  Ribes cereum var. cereum George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20978 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 Comment
  UCR253238  Carex subfusca George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20995 Amador Northern Sierra Nevada Mountains, Bear River Road, 1.5 road miles east of the dam for Lower Bear River Reservoir 1837 Comment
  UCR253513  Eriodictyon californicum George K. Helmkamp 2014-4-5 22665 Amador Sierra Nevada Foothills, junction of Tonzi Road and CA-124, NE of Ione 201 Comment
  UCR254599  Bromus hordeaceus George K. Helmkamp 2014-3-14 22556 Amador Eastern Sacramento Valley/Sierra Nevada Foothills, along Hwy E-16, 0.6 mile southwest of the junction with CA-49, c. 2.5 mi southwest of Plymouth 250 Comment
  UCR257166  Lupinus albicaulis George K. Helmkamp, Mary Alice Barnes 2013-5-13 20603 Amador Sierra Nevada Mountains, Shake Ridge road, 4.0 miles northeast of the junction with Fiddletown Road, just west of Dew Drop Dr. 1209 Comment
  UCR259857  Vicia villosa subsp. villosa George K. Helmkamp, Elizabeth Helmkamp 2013-10-18 22446 Amador Sierra Nevada Mountains Foothills, southern edge of Plymouth, east side of CA-49, opposite the junction with Randolph Court 332 Comment
  UCR259866  Conyza canadensis George K. Helmkamp, Elizabeth Helmkamp 2013-10-22 22457 Amador Sierra Nevada Mountains Foothills, Shenandoah Road, near Sobon Creek, 6.8 miles northeast of its junction with CA-49 in Plymouth 563 Comment
  UCR259880  Rumex crispus George K. Helmkamp, Elizabeth Helmkamp 2013-10-22 22454 Amador Sierra Nevada Mountains Foothills, Shenandoah Road, near Sobon Creek, 6.8 miles northeast of its junction with CA-49 in Plymouth 563 Comment
  UCR261981  Eriogonum umbellatum var. polyanthum George K. Helmkamp, Amy Barnes 2014-10-10 23137 Amador Northern Sierra Nevada Mountains, Bear River Road, 0.1 mile south of it juction with CA-88 1992 Comment
  UCR261992  Pinus contorta subsp. murrayana George K. Helmkamp, Amy Barnes 2014-10-10 23150 Amador Northern Sierra Nevada Mountains, Plasse Road at the south end of Silver Lake and 0.1 mile north of Plasse's Resort 2215 Comment
  RSA769899  Fraxinus latifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15570 Butte 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
  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
  SD239747  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18757 Butte Northwestern Sacramento Valley: Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82a^z) of Gridley. 91 Comment
  SD239756  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2012-4-14 18760 Butte Northwestern Sacramento Valley: Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi ENE (82a^z) of Gridley. 91 Comment
  UC2044596  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. (Biggs 7.5' Q.) Comment
  UCD109126  Vicia villosa subsp. varia G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13071 Butte Northern Sacramento Valley: East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  UCD130097  Centaurea solstitialis G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  UCD97854  Chenopodium missouriense G. 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
  UCR188717  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13072 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  UCR219107  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15599 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  UCR219263  Trichostema lanceolatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15590 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
  UCR237325  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18746 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  UCR237334  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2012-4-14 18751 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  UCR238596  Layia platyglossa George K. Helmkamp, E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley, W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. 43 Comment
  CAS-BOT-BC168245  Geranium molle G. K. Helmkamp; E. A. Helmkamp 2008-3-22 13237 Calaveras Sierra Nevada Mountains Foothills: along Mokelumne Vista Road at the junction with CA-49, just west of Mokelumne Hill village 479 Comment
  JEPS119415  Madia elegans G. K. Helmkamp, E. A. Helmkamp 2011-5-21 17335 Calaveras Northern Sierra Nevada Mountains Foothills, Rail Road Flat Road, 1.2 miles south of its junction with Ridge Road, 10.1 mi. ENE (83 deg. ) of Mokelumne Hill Comment
  RSA0047745  Aegilops triuncialis George K. Helmkamp, Elizabeth A. Helmkamp 2013-5-24 20691 Calaveras Whiskey Slide Road, just east of West Murray Creek Road, c. 4.7 miles SE of Jesus Maria Road 677 Comment
  RSA750894  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2007-3-17 11652 Calaveras Eastern Sacramento Valley; about 1 mile N of Burson on the road to S Comanche Reservoir 152 Comment
  RSA752667  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2008-3-18 13186 Calaveras Jesus Maria Road, 2.4 miles southeast of its junction with CA-26; beside Jesus Maria Creek 305 Comment
  SD234788  Sanicula bipinnata G. K. Helmkamp, E. A. Helmkamp 2008-4-11 13243 Calaveras Sierra Nevada Mountains Foothills: along Fricot City Road, 1.8 miles northwest of CA-49, c. 4.6 miles (air) SE of San Andreas 387 Comment
  SD239930  Veronica arvensis George K. Helmkamp, E. A. Helmkamp 2012-5-15 18991 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
  SD240875  Lasthenia californica George K. Helmkamp, E. A. Helmkamp 2012-4-4 18681 Calaveras Northern San Joaquin Valley: along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs (Valley Springs SW 7.5'Q) 67 Comment
  SD254615  Lupinus benthamii George K. Helmkamp, Mary Alice Barnes 2013-5-17 20645 Calaveras Northern Sierra Nevada Mountains Foothills; along CA Hwy 26, 0.4 mile northeast of its junction with Camp[o Seco Turnpike Road, SW of Mokelumne Hill. 438 Comment
  SD255803  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp 2014-5-17 22885 Calaveras Sierra Nevada Mountains Foothills: along CA-26, 2.6 miles northeast of CA-49 at Mokelumne Hill 518 Comment
  SEINET13276816 Image available Monardella sheltonii George K. Helmkamp, Mary Alice Barnes 2013-1 20634 Calaveras Northern Sierra Nevada Mountains Foothills: Poloma Road at its junction with Cosgrove Creek Road, 3 miles NE (30 deg. ) of Valley Springs (Valley Springs 7.5' Q.) 279 Comment
  SEINET2473463 Image available Melica aristata George K. Helmkamp, E. A. Helmkamp 2009-1 15343 Calaveras Sierra Nevada Mountains; Ganns Meadow Drive just south of its junction with CA-4, 16.7 miles northeast of Arnold 2067 Comment
  SEINET3860405  Linanthus bicolor George K. Helmkamp, Amy Barnes 2010-5-7 15984 Calaveras Sierra Nevada Mountains Foothills: Michel Road, 0.1 mile east of its junction with Mountain Ranch Road. 5.2 miles east of San Andreas.; 0 512 Comment
  SEINET4178665 Image available Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2010-8-3 16708 Calaveras Northern Sierra Nevada Mountains: Forest Route 7N23, 0.1 mile north of junction with CA-4. 2004 Comment
  SEINET4560554  Leontodon taraxacoides subsp. taraxacoides George K. Helmkamp, Amy Barnes 2013-1 22364 Calaveras Northern Sierra Nevada Mountains: SE side of White Pines Reservoir, 0.6 mile NE of Arnold. 1184 Comment
  SEINET4691733  Eleocharis acicularis var. acicularis George K. Helmkamp, Amy Barnes 2013-1 22350 Calaveras Northern Sierra Nevada Mountains: SE side of White Pines Reservoir, 0.6 mile NE of Arnold. 1184 Comment
  SEINET4691734  Calocedrus decurrens George K. Helmkamp, Amy Barnes 2013-1 22351 Calaveras Northern Sierra Nevada Mountains: SE side of White Pines Reservoir, 0.6 mile NE of Arnold. 1184 Comment
  SEINET9262004  Torilis arvensis George K. Helmkamp, Amy Barnes 2013-1 22316 Calaveras 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
  UC2044627  Madia gracilis George K. Helmkamp with E. A. Helmkamp 2011-6-17 17558 Calaveras Northern Sierra Nevada Mountains Foothills Winton Road, 3.7 miles northeast of CA-26 at West Point. (Devils Nose 7.5' Q.) Comment
  UCD126686  Nicotiana acuminata var. multiflora G. K. Helmkamp; E. A. Helmkamp 2007-9-24 13009 Calaveras Sierra Nevada Mountains: in Rich Gulch along Gwin Mine Road, 1.2 miles north of Paloma. 329 Comment
  UCR173994  Lythrum hyssopifolia George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10800 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 0.2 mile north of West Point 838 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
  UCR174931  Eriophyllum lanatum var. croceum George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10774 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 12.3 miles east of the Mokelumne Hill turnoff from Calif. Hwy 49 640 Comment
  UCR184956  Geranium molle George K. Helmkamp, E. A. Helmkamp 2007-4-26 11854 Calaveras Northern Sierra Nevada Mountains Foothills, Mokelumne Vista, 0.4 mile south of Calif. Hwy 49 and Mokelumne Hill 442 Comment
  UCR188520  Grindelia camporum var. camporum George K. Helmkamp, E. A. Helmkamp 2007-9-24 13001 Calaveras Foothills, northern Sierra Nevada Mountains, along Hwy CA-49, 0.5 mile west (northbound route) of Mokelumne Hill 396 Comment
  UCR188573  Verbascum virgatum George K. Helmkamp, E. A. Helmkamp 2007-9-24 13010 Calaveras Northern foothills, Sierra Nevada Mountains, in Rich Gulch along Gwin Mine Road, 1.2 miles north of Paloma 329 Comment
  UCR189469  Amsinckia retrorsa George K. Helmkamp, E. A. Helmkamp 2007-3-17 11658 Calaveras Eastern Sacramento Valley, Hwy CA-12 at Lime Creek road, east of Valley Springs 238 Comment
  UCR189471  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2007-3-17 11655 Calaveras Eastern Sacramento Valley, about 1 mile north of Burson on the road to south Comanche Reservoir 152 Comment
  UCR197397  Hypochaeris glabra George K. Helmkamp, E. A. Helmkamp 2008-4-11 13255 Calaveras Sierra Nevada Mountains Foothills, along Fricot City Road, 1.8 miles northwest of CA-49, c. 4.6 miles (air) SE of San Andreas 387 Comment
  UCR197536  Scandix pecten-veneris George K. Helmkamp, E. A. Helmkamp 2008-3-22 13236 Calaveras Sierra Nevada Mountains Foothills, along Mokelumne Vista Road at the junction with CA-49, just west of Mokelumne Hill village 479 Comment
  UCR197820  Silene californica George K. Helmkamp, E. A. Helmkamp 2008-5-8 13418 Calaveras Sierra Nevada Mountains Foothills, Skull Flat road, 0.4 mile north of it junction with Winton Road, northeast of West Point 823 Comment
  UCR200937  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2008-9-30 14184 Calaveras Foothills, northern Sierra Nevada Mountains, along CA-49, 1.9 miles south of Mokelumne Hill 381 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
  UCR215776  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2009-7-30 15347 Calaveras Northern Sierra Nevada Mountains, Forestry Route 6N45, just north of its junction with CA-44, 15.1 miles northeast of Arnold 2018 Comment
  UCR217833  Lotus humistratus George K. Helmkamp, Amy Barnes 2010-5-7 15967 Calaveras Sierra Nevada Mountains Foothills, along CA-49, 0.4 mile north of its junction with CA-12, vicinity of San Andreas 233 Comment
  UCR218139  Lepidium strictum George K. Helmkamp, Amy Barnes 2010-5-7 15999 Calaveras Sierra Nevada Mountains Foothills, Mountain Ranch Road, 3.2 miles east of San Andreas 436 Comment
  UCR218144  Nemophila heterophylla George K. Helmkamp, Amy Barnes 2010-5-7 15993 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
  UCR218149  Collinsia heterophylla George K. Helmkamp, Amy Barnes 2010-5-7 15985 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
  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
  UCR229463  Mimulus breweri George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18048 Calaveras Northern Sierra Nevada Mountains, Black Springs Road [Forest Route 7N23], 1.7 miles north of its junction with CA Hwy 4 2058 Comment
  UCR229573  Silene verecunda subsp. platyota George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18058 Calaveras Northern Sierra Nevada Mountains, Black Springs Road [Forest Route 7N23], 1.7 miles north of its junction with CA Hwy 4 2058 Comment
  UCR230616  Spergularia rubra George K. Helmkamp, E. A. Helmkamp 2011-7-19 17847 Calaveras Northern Sierra Nevada Mountains, Forest Route 5N75, 1.1 miles west of Boards Crossing bridge over North Fork Stanislaus River 1220 Comment
  UCR230947  Heteromeles arbutifolia George K. Helmkamp, E. A. Helmkamp 2010-10-6 17011 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26 (Stephen P. Teale Hwy), at the junction with Peregrine Road, 1.85 mi. east (84 deg. ) of Mokelumne Hill 503 Comment
  UCR231102  Stellaria media George K. Helmkamp, E. A. Helmkamp 2011-9-16 18274 A Calaveras Northern Sierra Nevada Mountains Foothills, Bald Mountain Road, 1.5 miles SW of Hunter Creek crossing, 7.3 miles NE of the junction of Blue Mountain Rd and Rail Road Flat Rd 1037 Comment
  UCR231108  Gnaphalium canescens subsp. beneolens George K. Helmkamp, E. A. Helmkamp 2011-9-16 18280 Calaveras Northern Sierra Nevada Mountains Foothills, Bald Mountain Road, 1.5 miles SW of Hunter Creek crossing, 7.3 miles NE of the junction of Blue Mountain Rd and Rail Road Flat Rd 1037 Comment
  UCR231110  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2011-9-16 18282 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
  UCR232287  Bromus George K. Helmkamp, E. A. Helmkamp 2010-8-3 16684 Calaveras Northern Sierra Nevada Mountains, along CA-4 at the Arnold Byway, about 0.3 mile northeast of Arnold 1244 Comment
  UCR233102A  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2011-7-12 17734 Calaveras Northern Sierra Nevada Mountains, Winton Road (Forest Route 7N03), 14.4 miles east of its junction with CA-26 in West Point 1590 Comment
  UCR233153B  Epilobium densiflorum George K. Helmkamp, E. A. Helmkamp 2011-7-12 17717 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 Comment
  UCR233260  Velezia rigida George K. Helmkamp, E. A. Helmkamp 2011-7-12 17706 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 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
  UCR238450  Poa annua George K. Helmkamp, E. A. Helmkamp 2012-4-4 18686 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR240735  Eragrostis mexicana subsp. virescens George K. Helmkamp, E. A. Helmkamp 2012-9-1 19743 Calaveras Northern Sierra Nevada Mountains Foothills, along Winton Road, 1.3 miles NE of its junction with CA-26 at West Point 966 Comment
  UCR241336  Amaranthus palmeri George K. Helmkamp, E. A. Helmkamp 2012-9-21 19894 Calaveras Eastern San Joaquin Valley, Milton/Jenny Lind Road (Co. Rd J14), 2.3 miles south of Jenny Lind Rd. junction with CA-26, south of Rancho Calaveras & east of Linden 102 Comment
  UCR241732  Silene californica George K. Helmkamp, E. A. Helmkamp 2012-5-31 19113 Calaveras Northern Sierra Nevada Mountains, Lily Gap Road, 0.9 mile northeast of its junction with Winton Road, 8.1 km NE (60 deg. ) of West Point 1133 Comment
  UCR242323  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2011-6-17 17596 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
  UCR242611  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2011-6-17 17561 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 3.7 miles northeast of CA-26 at West Point 1012 Comment
  UCR242643  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-6-17 17558 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 3.7 miles northeast of CA-26 at West Point 1012 Comment
  UCR245585  Epilobium brachycarpum George K. Helmkamp, Amy Barnes 2013-9-24 22346 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR245596  Plantago lanceolata George K. Helmkamp, Amy Barnes 2013-9-24 22356 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR245858  Polygonum aviculare George K. Helmkamp, Amy Barnes 2013-9-24 22368 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR248503  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2012-5-31 19099 Calaveras Northern Sierra Nevada Mountains, Winton Road, 4.1 miles east of its junction with CA-26, NE of West Point 1072 Comment
  UCR249882  Elymus caput-medusae George K. Helmkamp, Mary Alice Barnes 2013-5-17 20647 Calaveras Northern Sierra Nevada Mountains Foothills, Along CA Hwy 26, 0.4 mile northeast of its junction with Campo Seco Turnpike Road, SW of Mokelumne Hill 438 Comment
  UCR249888  Clarkia biloba subsp. biloba George K. Helmkamp, Mary Alice Barnes 2013-5-17 20637 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26, 0.3 mile northeast of Paloma Road, SW of Mokelumne Hill 505 Comment
  UCR249891  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, Mary Alice Barnes 2013-5-17 20640 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26, 0.3 mile northeast of Paloma Road, SW of Mokelumne Hill 505 Comment
  UCR249968  Avena fatua George K. Helmkamp, Elizabeth Helmkamp 2013-3-26 20212 Calaveras Eastern San Joaquin Valley, Milton, Jenny Lind Road (Milton Rd.), 7.4 miles south of its junction with CA-26 120 Comment
  UCR250286  Vicia sativa subsp. sativa George K. Helmkamp 2013-3-14 20173 Calaveras Central Sierra Nevada Foothills, Along CA-26, 2.2 miles northeast of its junction with CA-12 381 Comment
  UCR250337  Trifolium glomeratum George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20704 Calaveras Northern Sierra Nevada Mountains Foothills, North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  UCR250347  Lupinus bicolor George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20709 Calaveras Northern Sierra Nevada Mountains Foothills, North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  UCR250596  Ceanothus integerrimus George K. Helmkamp, Mary Alice Barnes 2013-4-24 20394 Calaveras Northern Sierra Nevada Mountains Foothills, Along CA-26 (West Point-Pioneer Rd.), at the west side of the bridge over North Fork Mokelumne River 654 Comment
  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
  UCR250653  Bromus laevipes George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20686 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
  UCR250892  Calochortus superbus George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20675 Calaveras Northern Sierra Nevada Mountains Foothills, Whiskey Slide Road, 2.6 miles south of its junction with Jesus Maria Road, 7.9 mi. SE (118 deg. ) of Mokelumne Hill 561 Comment
  UCR250898  Stellaria media George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20673 Calaveras Northern Sierra Nevada Mountains Foothills, Whiskey Slide Road, 2.6 miles south of its junction with Jesus Maria Road, 7.9 mi. SE (118 deg. ) of Mokelumne Hill 561 Comment
  UCR253248  Cichorium intybus George K. Helmkamp, Amy Barnes 2013-9-23 22318 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR256671  Dipsacus sativus George K. Helmkamp, Mary Alice Barnes 2013-5-17 20630 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
  UCR257029  Amaranthus albus George K. Helmkamp, Mary Alice Barnes 2013-5-17 20629 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
  UCR257180  Medicago lupulina George K. Helmkamp, E. A. Helmkamp 2013-11-9 22474 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
  UCR258361  Vicia americana George K. Helmkamp 2014-5-28 22921 Calaveras Northern Sierra Nevada Mountains, along Winton Road (FR 7N03), 12.3 miles east of CA-26 in West Point 1640 Comment
  UCR258374  Festuca microstachys George K. Helmkamp 2014-5-28 22922 Calaveras Northern Sierra Nevada Mountains, along Winton Road (FR 7N03), 12.3 miles east of CA-26 in West Point 1640 Comment
  UCR258379  Ceanothus integerrimus George K. Helmkamp 2014-5-28 22931 Calaveras Northern Sierra Nevada Mountains, along Winton Road along the north side of Wilson Lake 1128 Comment
  UCR87681  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 1995-6-22 95-4- 2 22 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
  SEINET7249317  Elymus glaucus George K. Helmkamp, Elizabeth Helmkamp 2013-1 Calaveras Comment
  SEINET7249318  Trifolium glomeratum George K. Helmkamp, Elizabeth Helmkamp 2013-1 Calaveras Comment
  RSA0011988  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 2011-4-1 17122 Colusa Antelope Valley, along Maxwell-Sites Road, 1.8 miles southeast of Sites 77 Comment
  RSA0115434  Phoradendron macrophyllum George K. Helmkamp, Elizabeth Helmkamp 2014-1-4 22508 Colusa Sacramento Valley: along CA-20 at the junction with Alameda Court, 0.2 mile west of the Sacramento River crossing at Meridian. 20 Comment
  SBBG128982  Castilleja attenuata G. K. Helmkamp, E. A. Helmkamp 2011-4-1 17122 Colusa Antelope Valley, along Maxwell-Sites Rd, 1.8 mi SE of Sites 77 Comment
  SD236305  Quercus douglasii G. K. Helmkamp, E. A. Helmkamp 2008-10-14 14258 Colusa Sacramento Valley: along River Road (generally following the Sacramento River), 1.1 miles north of Colusa. 17 Comment
  SD239748  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. 92 Comment
  SEINET2442355  Eucalyptus camaldulensis George K. Helmkamp, E. A. Helmkamp 2009-1-31 14319 Colusa Sacramento Valley: Jameson Road 1.3 miles north of its junction with Lurline ROad and south of Harbison Road, generally west of the city of Colusa. 16 Comment
  SEINET3245667  Eriodictyon californicum G. K. Helmkamp, E. A. Helmkamp 2009-1 14759 Colusa Inner North Coast Ranges: along CA-16, 1.8 miles north of the Yolo County Line (Glascock Mountain 7.5') 271 Comment
  UCR201546  Amaranthus blitoides George K. Helmkamp, E. A. Helmkamp 2008-10-14 14264 Colusa Sacramento Valley, along River Road (generally following the Sacramento River), 8.4 miles north of Colusa 17 Comment
  UCR206291  Brassica juncea George K. Helmkamp, E. A. Helmkamp 2009-5-20 14737 Colusa Central Inner Coast Ranges, along CA-16 near Bear Creek, 1.6 miles south of the junction with CA-20 320 Comment
  UCR233295  Vicia villosa subsp. varia George K. Helmkamp, E. A. Helmkamp 2011-4-1 17126 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 0.4 miles southeast of Sites 93 Comment
  UCR233450  Eschscholzia caespitosa George K. Helmkamp, E. A. Helmkamp 2011-4-1 17124 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 0.4 miles southeast of Sites 93 Comment
  CAS-BOT-BC235104  Sambucus racemosa var. racemosa G. K. Helmkamp; E. A. Helmkamp 2008-6-23 13704 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail, 0.7 mile southeast of Leek Spring 2268 Comment
  CAS-BOT-BC248287  Erythranthe guttata George K. Helmkamp; E. A. Helmkamp 2011-10-13 18417 El Dorado Northern Sierra Nevada Mountains: Foothills: Forebay Road, 8.1 miles northwest of Pollock Pines, at north side of bridge over the South Fork American River 596 Comment
  CAS-BOT-BC342908  Madia gracilis G. K. Helmkamp; E. A. Helmkamp 2009-6-29 15066 El Dorado Sierra Nevada Mountains: Ice House Road, 5.5 miles north of its junction with CA-50, c. 10.5 air miles NE (78 deg. ) of Pollock Pines 1520 Comment
  CAS-BOT-BC439445  Claytonia parviflora subsp. parviflora G. K. Helmkamp; E. A. Helmkamp 2008-4-30 13347 El Dorado Sierra Nevada Mountains Foothills: junction of Meadow Brook and Bear Creek Roads at Traverse Creek, south of Georgetown. 674 Comment
  CAS-BOT-BC444026  Anaphalis margaritacea George K. Helmkamp; Elizabeth Helmkamp 2013-7-31 22056 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. 468 Comment
  CAS-BOT-BC444031  Phleum pratense George K. Helmkamp; Elizabeth Helmkamp 2013-8-2 22089 El Dorado Northern Sierra Nevada Mountains: Mehrten Spring Road, 0.5 mile north of CA-88. 546 Comment
  CAS-BOT-BC523885  Grindelia hirsutula George K. Helmkamp; E. A. Helmkamp 2012-9-17 19852 El Dorado Northern Sierra Nevada Mountains Foothills: along Forebay Rd, 4.8 mi N of its jct with Pony Express Rd in Pollock Pines 954 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
  CHSC110477  Dodecatheon alpinum G. K. Helmkamp; Amy Barnes, Ann Kerchner 2010-7-19 16583 El Dorado Northern Sierra Nevada Mountains: southernmost point of Wright's Lake, 5.6 mi. NE (33 deg. ) of Kyburz. 2085 Comment
  CHSC118016  Streptanthus tortuosus var. orbiculatus G. K Helmkamp; A. E Helmkamp 2008-7-11 13760 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
  JEPS119468  Madia gracilis George K. Helmkamp with E. A. Helmkamp 2011-7-2 17623 El Dorado n SNF: Forni Road near Weber Creek, 0.8 mi south of its Placerville junction with US-50. Comment
  OBI79193  Castilleja tenuis G. K. Helmkamp, E. A. Helmkamp 2009-6-29 15075 El Dorado Sierra Nevada Mountains: Ice House Road, 7.6 miles north of its junction with CA-50, c. 10.5 air miles NE (74 deg. ) of Pollock Pines (Riverton 7.5' Q.) 1642 Comment
  OBI79194  Gayophytum diffusum G. K. Helmkamp, E. A. Helmkamp 2009-6-29 15071 El Dorado Sierra Nevada Mountains: Ice House Road, 7.6 miles north of its junction with CA-50, c. 10.5 air miles NE (74 deg. ) of Pollock Pines (Riverton 7.5' Q.) 1642 Comment
  OBI82252  Chaenactis douglasii var. douglasii George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20912 El Dorado Northern Sierra Nevada Mountains; Silver Fork Road, north side of its junction with Mormon Emigrant Trail 2188 Comment
  OBI83551  Symphyotrichum spathulatum var. spathulatum George K. Helmkamp, Elizabeth Helmkamp 2013-7-22 22005 El Dorado Silver Fork Road, 0.8 mile north of its junction with CA-88 and near Jim Quinn Spring 2117 Comment
  RSA0011955  Perideridia parishii subsp. latifolia George K. Helmkamp, E. Helmkamp 2011-9-13 18256 El Dorado Mormon Emigrant Trail, 22.6 miles southeast of Jenkinson s Lake, between Silver Fork Road and Hwy 88, 0.2 mi. NNE (23 deg ) of Alder Hill 2274 Comment
  RSA0011969  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2011-9-13 18265 El Dorado Foster Meadow Road, 0.6 miles north of its junction with CA-88 2136 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
  RSA0012026  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2011-9-1 18206 El Dorado Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  RSA0012154  Crassula connata George K. Helmkamp, E. A. Helmkamp 2010-3-23 15755 El Dorado Happy Valley Cutoff Road, 0.1 mile east of its junction with County Road E16/Mt. Aukum Road 622 Comment
  RSA0012166  Erigeron lassenianus var. lassenianus George K. Helmkamp, E. A. Helmkamp 2006-7-10 10919 El Dorado 0.5 mile east of the junction of Wright's Lake Road and the road from Ice House Reservoir 2056 Comment
  RSA0013380  Mimulus bicolor George K. Helmkamp, E. A. Helmkamp 2011-7-7 17631 El Dorado Park Creek Road, 0.4 mile east of its junction with (Co. Rd. E16) Sly Park Road, 1.4 mi. SE (111deg.) of Pollock Pines. 1290 Comment
  RSA0013406  Viola glabella George K. Helmkamp, E. A. Helmkamp 2012-5-18 19022 El Dorado Capps Crossing Road (Bonnetti Rd.), 0.1 mile northwest of the bridge over Diamond Creek, E of Jenkinson Lake and S of US Hwy 50 1186 Comment
  RSA0035748  Trifolium microcephalum George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-15 20875 El Dorado Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  RSA0035753  Iris hartwegii subsp. hartwegii George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-15 20869 El Dorado Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  RSA0043025  Pseudobahia heermannii George K. Helmkamp, E. A. Helmkamp 2009-3-19 14427 El Dorado Sierra Nevada Mtns. Foothills: Rock Creek Road at the Rock Creek crossing; about 3.5 miles west of Finnon Reservoir. 412 Comment
  RSA0043187  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2006-4-25 10213 El Dorado Northern Sierra Nevada Foothills: East of Sacramento, southwest of Placerville. Forni Road between US Highway 50 and Diamond Springs, at Weber Creek. 488 Comment
  RSA0045141  Cryptantha simulans George K. Helmkamp, E. A. Helmkamp 2012-7-6 19321 El Dorado Ice House Road, 0.2 mile north of Ice House community, 10.7 miles north of US-50. 1683 Comment
  RSA0045223  Lagophylla glandulosa George K. Helmkamp, E. A. Helmkamp 2006-9-29 11447 El Dorado Salmon Falls Rd just west of Calif. Hwy 49 and 4 miles south of Cool. 351 Comment
  RSA0049800  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2012-7-6 19336 El Dorado Ice House Road, 0.4 mile north of Ice House village, 10.9 miles north of the junction with US-50. 1707 Comment
  RSA0049892  Schedonorus arundinaceus George K. Helmkamp, E. A. Helmkamp 2012-7-6 19357 El Dorado Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50. 2078 Comment
  RSA0055952  Delphinium hansenii George K. Helmkamp, Amy Barnes 2014-5-8 22867 El Dorado Sierra Nevada Mountains Foothills: along CA-49 near Ramales Lane, c. 0.7 mile north of Union Mine Road junction. 282 Comment
  RSA0070097  Poa secunda George K. Helmkamp, Amy Barnes 2014-5-14 22878 El Dorado Mormon Emigrant Trail, 4.2 miles east of the east dam of Jenkinson Lake. 1247 Comment
  RSA0115716  Gilia capitata subsp. mediomontana George K. Helmkamp, Elizabeth Helmkamp 2013-5-2 20452 El Dorado Sierra Nevada Mountains Foothill: Happy Valley Road, 0.6 mile east of its junction with Mt. Aukum Road, 1.65 air miles NE (72 deg ) of Somerset. 665 Comment
  RSA715232  Leontodon taraxacoides subsp. taraxacoides George K. Helmkamp, E. A. Helmkamp 2005-9-12 9855 El Dorado Northern Sierra Nevada Foothills, E of Sacramento; Sly Park Road (County Hwy E-16) ca. 2 miles E of Pleasant Valley. 854 Comment
  RSA715238  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2005-7-31 9742 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
  RSA715283  Lotus oblongifolius George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10769 El Dorado About 1.3 miles north of Hwy US-50 on Wrights Lake Road. 1677 Comment
  RSA727267  Symphyotrichum spathulatum var. spathulatum George K. Helmkamp, E. A. Helmkamp 2007-7-28 11039 El Dorado Northern Sierra Nevada Mtns: 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd 2226 Comment
  RSA747032  Plectritis macrocera George K. Helmkamp, E. A. Helmkamp 2007-5-7 11966 El Dorado 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
  RSA749900  Gilia leptalea subsp. bicolor George K. Helmkamp, E. A. Helmkamp 2008-8-1 13922 El Dorado Wrights Lake Road, 3.3 miles north of its junction with CA-50 2043 Comment
  RSA751089  Cistanthe monosperma George K. Helmkamp, E. A. Helmkamp 2008-7-11 13762 El Dorado Tragedy Spring Road, 8.0 miles southwest of Kirkwood and 0.1 mile north of its junction with CA-88 2421 Comment
  RSA752675  Astragalus gambelianus George K. Helmkamp, E. A. Helmkamp 2008-4-25 13315 El Dorado Sierra Nevada Mountains Foothills: Junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown. 674 Comment
  RSA755551  Glyceria striata George K. Helmkamp, E. A. Helmkamp 2009-8-19 15508 El Dorado Wright's Lake Road, 8.6 miles north of its upper junction with Ice House Road 1785 Comment
  RSA755895  Abies magnifica George K. Helmkamp, E. A. Helmkamp 2009-7-2 15087 El Dorado Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  RSA756920  Triteleia ixioides subsp. scabra George K. Helmkamp, E. A. Helmkamp 2009-5-14 14690 El Dorado hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  RSA757540  Carex feta George K. Helmkamp, Amy Barnes 2009-7-8 15158 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
  RSA781120  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2010-4-23 15923 El Dorado along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing. 200 Comment
  RSA781219  Gilia capillaris George K. Helmkamp, E. A. Helmkamp 2010-7-23 16601 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
  RSA781313  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2009-7-22 15273 El Dorado Wrights Lake Road, 1.2 miles south of Wrights Lake 2073 Comment
  RSA781956  Gilia leptalea subsp. bicolor George K. Helmkamp, E. A. Helmkamp 2007-8-9 12732 El Dorado Wright's Lake Road, 1.4 miles south of the lake. 2101 Comment
  RSA782374  Agoseris heterophylla var. heterophylla George K. Helmkamp, E. A. Helmkamp 2010-4-23 15922 El Dorado along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing 200 Comment
  RSA785405  Lupinus albicaulis George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16330 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
  RSA785459  Phyllodoce breweri George K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16586 El Dorado Southernmost point of Wright's Lake, 5.6 mi. NE (33 degrees) of Kyburz. 2085 Comment
  RSA785462  Trifolium longipes var. nevadense George K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16574 El Dorado southeast side of Wrights Lake, 5.8 mi. NE (34deg.) of Kyburz 2085 Comment
  RSA791418  Galium bolanderi George K. Helmkamp, E. A. Helmkamp 2011-7-7 17646 El Dorado Northern Sierra Nevada Mountains Foothills: Capps Crossing (Bonnetti) Road, 2.8 miles south of its junction with Mormon Emigrant Trail 1297 Comment
  RSA791603  Mimulus torreyi George K. Helmkamp, E. A. Helmkamp 2009-6-29 15077 El Dorado Ice House Road, 7.6 miles north of its junction with CA-50, c. 10.5 air miles NE (74 ) of Pollock Pines 1642 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
  RSA792593  Rumex salicifolius var. denticulatus George K. Helmkamp, William Barnes 2010-9-4 16936 El Dorado Tragedy Spring Road, 0.1 mile southwest of its upper junction with CA-88 2412 Comment
  RSA794816  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2010-8-7 16729 El Dorado Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trail, at Jim Quinn Spring. 2136 Comment
  RSA795088  Aster oregonensis George K. Helmkamp, E. A. Helmkamp 2011-9-1 18204 El Dorado Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  SBBG129004  Leptosiphon parviflorus G. K. Helmkamp, E. A. Helmkamp 2012-4-24 18833 El Dorado Bear Crk Rd, 0.4 mi S of its jct with Meadow Brook Rd, 2.5 mi NE (66 deg) of Garden Valley 705 Comment
  SD234439  Umbellularia californica G. K. Helmkamp, E. A. Helmkamp 2007-3-11 11614 El Dorado Northern Sierra Nevada Foothills: Traverse Creek Road at the creek crossing, 2.4 miles NE of CA-193 (Garden Valley 7.5' Q) 518 Comment
  SD234732  Pseudotsuga menziesii G. K. Helmkamp, E. A. Helmkamp 2008-4-28 13342 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
  SD234825  Lactuca serriola G. K. Helmkamp, E. A. Helmkamp 2007-9-2 12881 El Dorado Foothills, northern Sierra Nevada Mountains: Grizzly Flat Road 5.2 miles ESE of Somerset, just west of Coles Station (Omo Ranch 7.5'Q) 957 Comment
  SD234829  Madia elegans subsp. densifolia G. K. Helmkamp, E. A. Helmkamp 2008-8-21 14039 El Dorado Foothills, northern Sierra Nevada Mountains: along CA-49, 0.3 mile north of the junction with Pleasant Valley Road in Diamond Springs. 537 Comment
  SD234858  Capsella bursa-pastoris G. K. Helmkamp, E. A. Helmkamp 2007-3-22 11666 El Dorado Foothills, Northern Sierra Nevada Mountains: Bucks Bar Road 4.4 miles south of Pleasant Valley Road at the junction of Sand Ridge road (Camino 7.5' Q) 627 Comment
  SD234939  Croton setiger G. K. Helmkamp, E. A. Helmkamp 2006-9-29 1140 El Dorado Northern Sierra Nevada Mountains Foothills: Placerville outskirts; CA-49, 2 miles north of jct with US-50 548 Comment
  SD235043  Penstemon newberryi var. newberryi G. K. Helmkamp, E. A. Helmkamp 2008-7-11 13758 El Dorado Northern Sierra Nevada Mountains: Tragedy Spring Road, 9.0 miles southwest of Kirkwood and 0.1 mile north of its junction with CA-88. 2421 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
  SD236256  Lonicera hispidula var. vacillans G. K. Helmkamp, E. A. Helmkamp 2008-6-3 13583 El Dorado Sierra Nevada Mountains: Forbay Road, 7.1 miles northwesst of CA-50 (road junction in Pollock Pines), noutlet road leading to the South Fork of the American River (Pollock Pines 7.5'Q) 715 Comment
  SD236309  Nemophila heterophylla G. K. Helmkamp, E. A. Helmkamp 2008-6-3 13575 El Dorado Sierra Nevada Mountains: Forbay Road, 7.1 miles northwest of CA-50 (road junction in Pollock Pines), no-outlet road leading to the South Fork of the American River 715 Comment
  SD236411  Heuchera micrantha G. K. Helmkamp, E. A. Helmkamp 2008-6-3 13581 El Dorado Sierra Nevada Mountains: Forbay Road, 7.1 miles northwest of CA-50 (road junction in Pollock Pines), no-outlet road leading to the South Fork of the American River 715 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
  SD237319  Eriophyllum lanatum var. croceum G. K. Helmkamp, E. A. Helmkamp 2009-6-29 15073 El Dorado Sierra Nevada Mountains: Ice House Road, 7.6 miles north of its junction with CA-50, c. 10.5 air miles NE (74a^z) of Pollock Pines. 1641 Comment
  SD237427  Hosackia incana G. K. Helmkamp, E. A. Helmkamp 2008-6-3 13588 El Dorado Sierra Nevada Mountains: Forbay Road, 4.8 miles northwest of its junction with CA-50 at Pollock Pines. 965 Comment
  SD237428  Acmispon parviflorus G. 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
  SD237508  Monardella sheltonii G. 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 (83a^z) of Pollock Pines. 989 Comment
  SD237558  Polygala cornuta var. cornuta G. K. Helmkamp, E. A. Helmkamp 2009-8-8 15408 El Dorado Sierra Nevada Mountains Foothills: along Forebay Road, 5.0 miles northwest of its junction with Poly Express Road in Pollock Pines (Pollock Pines 7.5'Q) 954 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
  SD239510  Calochortus minimus G. K. Helmkamp, E. A. Helmkamp 2009-7-2 15091 El Dorado Sierra Nevada Mountains: Wright's Road at Chimney Flat, 3.4 miles north of junctcion with US-50 (Pyramid Peak 7.5'Q) 2037 Comment
  SD240871  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
  SD243186  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2011-9-23 18311 El Dorado Northern Sierra Nevada Mountains: along Ice House Road, 8.6 miles north of its junction with US-50. Roadside. 1613 Comment
  SD243210  Erythranthe guttata George K. Helmkamp, E. A. Helmkamp 2011-10-13 18417 El Dorado Northern Sierra Nevada Mountains Foothills: Forebay Road, 8.1 miles northwest of Pollock Pines, at north side of bridge over the South Fork American River. 595 Comment
  SD248492  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
  SD254619  Lupinus lepidus var. sellulus George K. Helmkamp, Amy Barnes 2014-8-11 22995 El Dorado Northern Sierra Nevada Mountains; Ice House Road, 1.7 miles south of Crystal Basin Information Station. 1609 Comment
  SD254715  Viola lobata var. lobata George K. Helmkamp, Mary Alice Barnes 2013-4-30 20430 El Dorado Northern Sierra Nevada Mountains: Capps Crossing/Bonnetti Road, 0.2 mile northwest of the bridge over Diamond/Camp Creek. 1155 Comment
  SD255684  Cardamine hirsuta George K Helmkamp, E. A. Helmkamp 2009-3-7 14350 El Dorado Northern Sierra Nevada Mountains Foothills: along CA-193, 0.8 mile north of the junction with Rock Creek Road (Garden Valley 7.5'Q) 484 Comment
  SD255784  Limnanthes montana George K Helmkamp 2013-4-30 20442 El Dorado Sierra Nevada Mountains Foothills: Pleasant Valley Road, 0.4 mile northwest of Pleasant Valley (Sly Park 7.5'Q) 753 Comment
  SD260889  Symphyotrichum foliaceum var. parryi George K. Helmkamp, William Barnes 2010-9-4 16933 El Dorado Northern Sierra Nevada Mountains: Tragedy Spring Road, 0.1 mile southeast of its upper juncton with CA-88 (Tragedy Spring 7.5'Q) 2412 Comment
  SEINET11261556  Holodiscus microphyllus var. microphyllus George Helmkamp, E. A. Helmkamp 2010-9-23 16959 El Dorado Northern Sierra Nevada Mountains on Forest Route 31, 3.9 miles north of its junction with Peavine Ridge Road and Round tent Canyon Road.; 0 1457 Comment
  SEINET11261559  Heteromeles arbutifolia George Helmkamp, E. A. Helmkamp 2011-11-20 18468 El Dorado Northern Sierra Nevada Mountains Foothills: Salmon Falls Road, 1.6 miles S of the bridge over the American River.; 0 180 Comment
  SEINET11261806  Sanicula bipinnatifida George K. Helmkamp, E. A. Helmkamp 2012-4-30 18882 El Dorado Northern Sierra Nevada Mountains Foothills: Mosquito Road, 2.4 miles N of the bridge over the South Fork American River.; 0 694 Comment
  SEINET11261809  Cystopteris fragilis George K. Helmkamp, E. A. Helmkamp 2012-4-27 18868 El Dorado Northern Sierra Nevada Mountains Foothills: Mosquito Road N of Placerville, at the S side of the crossing of the South Fork American River.; 0 401 Comment
  SEINET11261875  Allophyllum divaricatum George Helmkamp, E. A. Helmkamp 2012-5-3 18907 El Dorado Northern Sierra Nevada Mountains Foothills: unnamed road leading to power plant, .3 mile east of South Fork American River bridge (Pollock Pines 7.5' Q.).; 0 613 Comment
  SEINET11261908  Actaea rubra George Helmkamp, E. A. Helmkamp 2011-7-30 17941 El Dorado Northern Sierra Nevada Mountains: North-South Road, 5.5 miles north of its junction with Omo Ranch Road, east side of bridge over Pi Pi Creek (Caldor 7.5' Q.); 0 1209 Comment
  SEINET11262287  Calochortus clavatus var. avius George Helmkamp, E. A. Helmkamp 2011-7-30 17951 El Dorado Northern Sierra Nevada Mountains: Omo Ranch Road, 7.4 miles southeast of Omo Ranch, 1.9 miles NW airline of Hwy 88 junction (Caldor 7.5).; 0 1372 Comment
  SEINET11262700  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 (Slate Moutain 7.5' Q.); 0 401 Comment
  SEINET11262703  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 (Slate Moutain 7.5' Q.).; 0 401 Comment
  SEINET12825136  Symphyotrichum divaricatum George K. Helmkamp, E. A. Helmkamp 2009-1 14711 El Dorado Foothills, Northern Sierra Nevada Mountains. Hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville. 1587 Comment
  SEINET13203263 Image available Acmispon parviflorus G. K. Helmkamp, Mary Alice Barnes 2013-1 20429 El Dorado Northern Sierra Nevada Mountains: Capps Crossing Road, 0.1 mile south of its junction with Mormon Emigrant Trail (Sly Park 7.5' Q.) 1260 Comment
  SEINET13203267 Image available Pseudognaphalium stramineum George K. Helmkamp, Amy Barnes 2014-1 23020 El Dorado Northern Sierra Nevada Mountains: Wentworth Springs Road at the junction with Eleven Pines Rd., east of Stumpy Meadow Reservior (Devil Peak 7.5' Q.) 1486 Comment
  SEINET13276710 Image available Agrostis scabra George K. Helmkamp, Amy Barnes 2014-1 22999 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 1.7 miles south of Crystal Basin Information Station (Riverton 7.5' Q.) 1609 Comment
  SEINET13276713 Image available Hieracium albiflorum George K. Helmkamp, Amy Barnes 2014-1 23002 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 1.7 miles south of Crystal Basin Information Station (Riverton 7.5' Q.) 1609 Comment
  SEINET13384150 Image available Panicum acuminatum var. acuminatum George K. Helmkamp, Amy Barnes 2012-1 19658 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 1786 Comment
  SEINET1908711  Cardamine hirsuta G. K. Helmkamp, E. A. Helmkamp 2008-1 13131 El Dorado Foothills, northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Diamond Springs Comment
  SEINET1908792  Viola pinetorum G. K. Helmkamp, E. A. Helmkamp 2008-1 13652 El Dorado Northern Sierra Nevada Mountains: Cat Creek Road, 3.6 miles north of its junction with CA-88, the jct. is 4.2 miles east of Cook's Station (Peddler Hill 7.5' Q) 1753 Comment
  SEINET2441407  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2009-7-2 15102 El Dorado Sierra Nevada Mountains: Wright's Road at Chimney Flat, 3.4 miles north of junction with US-50 (Pyramid Peak 7.5'Q.). 2037 Comment
  SEINET2441587  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2009-6-3 14898 El Dorado Northern Sierra Nevada Mountains: Forbay Road, 4.7 miles northwest of its junction with Pony Express Trail in Pollock Pines (Slate Mountain 7.5' Q.).; 0 945 Comment
  SEINET2443019  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2010-5-17 16050 El Dorado Sierra Nevada Mountains Foothills. Pine Hill Road at the junction with Bertana Court; southeast edge of State Ecological Preserve.; 0 459 Comment
  SEINET2473464 Image available Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2009-1 15076 El Dorado Sierra Nevada Mountains; Ice House Road, 7.6 miles north of its junction with CA-50, c. 10.5 air miles NE (74 deg. ) of Pollock Pines 1640 Comment
  SEINET2473472 Image available Lotus purshianus var. purshianus George K. Helmkamp 2007-7-7 12461 El Dorado Northern Sierra Nevada Mountains; along CA-89, 5.4 miles northwest of Luther Pass in the Grass Lake area 2018 Comment
  SEINET3123350 Image available Poa secunda var. secunda George K. Helmkamp, E. A. Helmkamp 2008-4-30 13364 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
  SEINET3271569 Image available Phleum pratense George K. Helmkamp, E. A. Helmkamp 2009-8-19 15489 El Dorado Sierra Nevada Mountains; Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  SEINET3271589 Image available Festuca George K. Helmkamp, Amy Barnes 2009-7-8 15128 El Dorado Sierra Nevada Mountains; Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  SEINET3285074 Image available Panicum capillare George K. Helmkamp, E. A. Helmkamp 2009-5-24 14798 El Dorado Sierra Nevada Mountains Foothills; Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road. 640 Comment
  SEINET3287496 Image available Poa annua George K. Helmkamp, E. A. Helmkamp 2009-3-7 14352 El Dorado Northern Sierra Nevada Mtns. Foothills; along Rock Creek road, 4.8 miles east of its junction with CA-193. 448 Comment
  SEINET3815541 Image available Circaea alpina subsp. pacifica George K. Helmkamp, E. A. Helmkamp 2011-7-30 17943 El Dorado Northern Sierra Nevada Mountains: North-South Road, 5.5 miles N of its junction with Omo Ranch Road, E side of bridge over Pi Pi Creek 1209 Comment
  SEINET3821903 Image available Festuca microstachys George K. Helmkamp, E. A. Helmkamp 2012-5-18 19001 El Dorado Northern Sierra Nevada Mountains, junction of Bonnetti Road (Capps Crossing Rd.) and Mormon Emigrant Trail, east of Jenkinson Lake (Sly Park 7.5' Q) 1260 Comment
  SEINET3860011  Plagiobothrys tenellus George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16126 El Dorado Sierra Nevada Mountains Foothills: Slug Gulch Road, 2.9 miles east of its junction with Perry Creek raod.; 0 1012 Comment
  SEINET3868342 Image available Adiantum jordanii George K. Helmkamp, E. A. Helmkamp 2009-5-14 14693 El Dorado Sierra Nevada Mountains Foothills: hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville (Garden Valley 7.5' Q).; 0 511 Comment
  SEINET3875504  Pseudotsuga menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2008-3-11 13145 El Dorado Sierra Nevada Mountains Foothils: Lake Oaks Mobile Home Park, Diamond Springs (Placerville 7.5; Q.).; 0 530 Comment
  SEINET4560537  Madia gracilis George K. Helmkamp, Elizabeth Helmkamp 2013-1 21096 El Dorado Northern Sierra Nevada Mountains; Hell's Delight Road, just west of the junction with Silver Fork Road, 2.8 miles north of CA-88. 2006 Comment
  SEINET4560678  Sisymbrium officinale George K. Helmkamp, E. A. Helmkamp 2012-1 18899 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. 591 Comment
  SEINET9262062  Solidago altissima George K. Helmkamp, Elizabeth Helmkamp 2013-1 22045 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 3.1 miles north of Ice House Resort, 0.18 miles north of Jones Fork Power House Rd., 1.2 miles NW of Ice House Reservoir (kyburz 7.5 Q) 1536 Comment
  SEINET954244  Muhlenbergia filiformis G. K. Helmkamp, E. A. Helmkamp 2006-1 11288 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 3.8 miles north of Wentworth Springs Road. 1615 Comment
  SEINET998819  Nicotiana acuminata var. multiflora G. K. Helmkamp, E. A. Helmkamp 2006-1 11547 El Dorado Northern Sierra Nevada Mountains Foothills: 0.6 mile northwest of Pleaseant Valley along Pleasant Valley Road 756 Comment
  UCD100814  Claytonia perfoliata subsp. perfoliata G. K. Helmkamp; E. A. Helmkamp 2007-3-22 11663 El Dorado Northern Sierra Nevada Mountains; Bucks Bar Road, 4.4 miles south of Pleasants Valley Road at the junction of Sand Ridge road. 628 Comment
  UCD101084  Rumex californicus G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11203 El Dorado Northern Sierra Nevada Mountains: Tragedy Spring; Tragedy Spring Road, 0.3 mile north of Hwy CA-88. 2424 Comment
  UCD102220  Phoradendron leucarpum subsp. tomentosum G. K. Helmkamp; E. A. Helmkamp 2006-3-26 10113 El Dorado Northern Sierra Nevada Foothills: ENE of Sacramento; Rock Creek Road at Jaybird Creek, 5.1 mi E of CA Highway 193 (generally ENE of Chili Bar). 590 Comment
  UCD103680  Gayophytum diffusum subsp. parviflorum G. K. Helmkamp; E. A. Helmkamp 2007-9-26 13015 El Dorado Northern Sierra Nevada Mountains: Bonetti Road, 1.1 miles south of its junction with Mormon Emigrant Trail, just east of Jenkinson Lake. 1189 Comment
  UCD103822  Acmispon americanus var. americanus G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11038 El Dorado Northern Sierra Nevada Mountains, 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd. 2226 Comment
  UCD103828  Acmispon americanus var. americanus G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12572 El Dorado Northern Sierra Nevada Mountains. Along Hwy CA-193, 1 mile south of Georgetown. 771 Comment
  UCD104000  Acmispon argophyllus var. fremontii G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-4 10622 El Dorado Northern Sierra Nevada foothills. Rock Creek Road at Dark Canyon, 1.4 miles east of the junction with Hwy. CA-193. 381 Comment
  UCD104058  Acmispon brachycarpus G. K. Helmkamp; Elizabeth Helmkamp 2006-4-29 10257 El Dorado Northern Sierra Neveda Foothills: Rock Creek Road, 0.9 mi. E of CA Hwy 193. 415 Comment
  UCD104339  Clarkia biloba subsp. biloba G. K. Helmkamp; E. A. Helmkamp 2007-5-5 11931 El Dorado Northern Sierra Nevada Mountains. Along CA-49, 3.7 miles NW of Placerville. 548 Comment
  UCD106022  Lupinus albifrons var. albifrons G. K. Helmkamp; Elizabeth Helmkamp 2006-4-27 10228 El Dorado Northern Sierra Neveda Foothills: 2.1 mi. S of Pleasant Valley Road along French Creek Road (SE of Shingle Springs). 369 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
  UCD106175  Navarretia leptalea G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10970 El Dorado Northern Sierra Nevada Mtns: Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2104 Comment
  UCD107247  Lupinus bicolor G. K. Helmkamp; Elizabeth Helmkamp 2007-4-20 11761 El Dorado 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
  UCD108822  Trifolium dubium G. K. Helmkamp 2006-5-1 10282 El Dorado Northern Sierra Neveda. Corner of Pleasant Valley Road and Patterson Drive, W end of Diamond Springs. 536 Comment
  UCD108828  Trifolium dubium G. K. Helmkamp; Elizabeth Helmkamp 2007-4-20 11772 El Dorado Northern Sierra Nevada Mountains. Junction of Uhlenkamp Road and Pine Hill Road, N of Grass Valley Road and NW of Placerville. 401 Comment
  UCD108830  Trifolium dubium G. K. Helmkamp; E. A. Helmkamp 2007-4-30 11894 El Dorado Northern Sierra Nevada Mountains. Hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 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
  UCD109233  Trifolium obtusiflorum G. K. Helmkamp; E. A. Helmkamp 2005-7-31 9717 El Dorado Northern Sierra Nevada Foothills: Junction of Ice House Road and CA Highway 50 (E of Pollock Pines). 1006 Comment
  UCD109737  Trifolium glomeratum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-19 10477 El Dorado Northern Sierra Nevada. Lake Oaks mobile home park. Corner of Pleasant Valley Road and Patterson Drive. Diamond Springs. 536 Comment
  UCD112102  Ceanothus cuneatus var. cuneatus G. K. Helmkamp; E. A. Helmkamp 2007-3-11 11611 El Dorado northern Sierra Nevada Mountains; Salmon Falls Road, 0.2 mile northeast of Sweetwater Creek, SSW of Pilot Hill. 122 Comment
  UCD113155  Drymocallis glandulosa var. reflexa G. K. Helmkamp 2006-7-12 10948 El Dorado Northern Sierra Nevada Mtns: Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges. 1960 Comment
  UCD113316  Heteromeles arbutifolia G. K. Helmkamp; E. A. Helmkamp 2006-12-7 11583 El Dorado Northern Sierra Nevada Mountains: Rock Creek Road, 1.2 mi. east of CA-193, northeast of the South Fork of American River at Chili Bar. 399 Comment
  UCD114275  Barbarea orthoceras G. K. Helmkamp; Elizabeth Helmkamp 2006-4-25 10217 El Dorado Northern Sierra Nevada: E of Sacramento, SW of Placerville. Forni road between US Hwy 50 and Diamond Springs, at Weber Creek. 488 Comment
  UCD114515  Cardamine hirsuta G. K. Helmkamp; E. A. Helmkamp 2007-2-24 11589 El Dorado Northern Sierra Nevada Mountains; Lake Oaks Mobile Home Park, Pleasant Valley Road and Patterson Drive, east end of Diamond Springs. 537 Comment
  UCD117025  Acer macrophyllum G. K. Helmkamp; E. A. Helmkamp 2007-3-22 11669 El Dorado Northern Sierra Nevada Mountains, Mt. Aukum Road at the crossing of the middle fork of Cosumnes River, west of junction of Bucks Bar Road. 622 Comment
  UCD119256  Eriodictyon californicum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-20 10504 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). 973 Comment
  UCD120901  Plagiobothrys nothofulvus G. K. Helmkamp; E. A. Helmkamp 2007-4-20 11775 El Dorado Northern Sierra Nevada Mountains: along Green Valley Road at junction of Jet Quartz Creek Rd., between Four Corners and Gold Hill. 410 Comment
  UCD121255  Asclepias cordifolia G. K. Helmkamp; Elizabeth Helmkamp, Amy Barnes 2007-6-20 12366 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
  UCD121465  Gentianopsis simplex G. K. Helmkamp; E. A. Helmkamp 2007-8-16 12775 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail at Leek Spring meadow, about 2 miles northwest of CA-88. 2238 Comment
  UCD121693  Galium aparine G. K. Helmkamp; E. A. Helmkamp 2007-4-30 11905 El Dorado Northern Sierra Nevada Mountains: hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  UCD123536  Collinsia tinctoria G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-4 10632 El Dorado Northern Sierra Nevada foothills. Rock Creek Road, about 2.2 miles east of its junction with Hwy. CA-193. 423 Comment
  UCD124587  Plantago lanceolata G. K. Helmkamp; Elizabeth Helmkamp 2005-11-15 10019 El Dorado Northern Sierra Nevada Foothills. E of Sacramento; ca. 3 air mi NNW of Placerville. South Fork of American River on the west side of CA Highway 193. 291 Comment
  UCD124900  Veronica serpyllifolia subsp. humifusa G. K. Helmkamp; Elizabeth Helmkamp 2006-5-1 10289 El Dorado Northern Sierra Neveda foothills, corner of Pleasant Valley Road and Patterson Drive; W end of Diamond Springs. 536 Comment
  UCD127548  Ligusticum grayi G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10884 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
  UCD127797  Lomatium utriculatum G. K. Helmkamp; E. A. Helmkamp 2006-3-26 10109 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
  UCD128046  Sanicula tuberosa G. K. Helmkamp; E. A. Helmkamp 2007-6-6 12266 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail, 8.3 miles east of its junction with Sly Park Road. 1616 Comment
  UCD128651  Agoseris retrorsa G. K. Helmkamp; Elizabeth Helmkamp 2006-5-31 10569 El Dorado Northern Sierra Neveda Foothills: Along Hwy US-50, 7.2 miles east of Ice House Canyon Road. 1162 Comment
  UCD128842  Anaphalis margaritacea G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11184 El Dorado Northern Sierra Nevada Mtns: Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road. 2250 Comment
  UCD131956  Erigeron glacialis var. glacialis G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10894 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
  UCD132306  Eurybia integrifolia G. K. Helmkamp; E. A. Helmkamp 2007-8-21 12805 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
  UCD134098  Lessingia leptoclada G. K. Helmkamp; E. A. Helmkamp 2005-9-12 9854 El Dorado Northern Sierra Nevada Foothills. E of Sacramento; Sly Park Road (County Highway E-16), ca. 2 miles E of Pleasant Valley. 854 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
  UCD134291  Madia gracilis G. K. Helmkamp; E. A. Helmkamp 2005-7-31 9743 El Dorado Northern Sierra Nevada Foothills; 20 miles WSW of Lake Tahoe; Ice House Road, N of CA Highway 50 and 1.5 miles S of junction with Ice House Reservoir. 1637 Comment
  UCD135578  Senecio integerrimus var. major G. K. Helmkamp; E. A. Helmkamp 2007-5-31 12254 El Dorado Northern Sierra Nevada Mountains Forestry Route 32, 0.8 mile east of its junction with Ice House Road. 1616 Comment
  UCD137540  Plectritis congesta subsp. brachystemon G. K. Helmkamp; E. A. Helmkamp 2007-5-1 11913 El Dorado Northern Sierra Nevada Mountains: access road to South Fork American River along CA-49, 4.4 miles northwest of Coloma. 207 Comment
  UCD141379  Juncus bufonius G. K. Helmkamp; Elizabeth Helmkamp 2006-5-24 10547 El Dorado Northern Sierra Nevada Mountains: Junction of Ice House Canyon Road and West Meadows Road (SSW of Union Valley Reservoir, just N of US Hwy 50). 1067 Comment
  UCD141434  Juncus chlorocephalus G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10980 El Dorado Northern Sierra Nevada Mountains: Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2104 Comment
  UCD141527  Juncus ensifolius G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11197 El Dorado Northern Sierra Nevada Mountains: Tragedy Spring; Tragedy Spring Road, 0.3 mile north of Hwy CA-88. 2424 Comment
  UCD142074  Luzula comosa G. K. Helmkamp; E. A. Helmkamp 2007-4-20 11755 El Dorado Northern Sierra Nevada Mountains; junction of French Creek Road and Lost Creek Road, just north of Frenchtown. 366 Comment
  UCD143804  Vicia americana subsp. americana G. K. Helmkamp; Elizabeth Helmkamp 2006-5-20 10506 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). 973 Comment
  UCD55731  Aira caryophyllea G. K. Helmkamp; Elizabeth Helmkamp 2006-5-1 10283 El Dorado Northern Sierra Neveda foothills, corner of Pleasant Valley Road and Patterson Drive; W end of Diamond Springs. 536 Comment
  UCD59731  Bromus suksdorfii G. K. Helmkamp; E. A. Helmkamp 2006-7-31 11076 El Dorado Northern Sierra Nevada Mountains. Along Wright's Lake Road (Forestry Route 4) at Lyons Creek, about 4 miles north of Hwy. U.S.--50. 1863 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
  UCD63201  Digitaria sanguinalis G. K. Helmkamp; E. A. Helmkamp 2006-10-20 11542 El Dorado Northern Sierra Nevada Mountains Foothills: Bucks Bar Road, 3.9 miles south of Pleasant Valley Road, general vicinity of Somerset. 625 Comment
  UCD66824  Asyneuma prenanthoides G. K. Helmkamp; E. A. Helmkamp 2006-8-24 11289 El Dorado Northern Sierra Nevada Mountains; Ice House Road, 3.8 miles north of Wentworth Springs Road (Robb's Peak 7.5' Q.) 1615 Comment
  UCD90676  Poa bulbosa G. K. Helmkamp; E. A. Helmkamp 2006-4-13 10189 El Dorado Northern Sierra Nevada Foothills. El Dorado National Forest. Along Hwy. 193, 1 mi. NE of Greenwood. 518 Comment
  UCD92715  Setaria pumila G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12590 El Dorado northern Sierra Nevada Mountains. Traverse Creek Road at the crossing of Traverse Creek; about 2 miles southeast of its junction with CA-193. 732 Comment
  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
  UCD96813  Ranunculus occidentalis G. K. Helmkamp; E. A. Helmkamp 2007-5-7 11950 El Dorado Foothills, Northern Sierra Nevada Mountains: Pedro Hills Road, 0.3 mile west of the junction with CA-49, junction 5.3 miles south of Cool. 299 Comment
  UCD97534  Amaranthus powellii G. K. Helmkamp; E. A. Helmkamp 2006-10-20 11540 El Dorado Northern Sierra Nevada Mountains Foothills. Bucks Bar Road, 3.9 miles south of Pleasant Valley Road, general vicinity of Somerset. 625 Comment
  UCD97926  Chenopodium berlandieri G. K. Helmkamp; E. A. Helmkamp 2007-9-11 12931 El Dorado Northern Sierra Nevada Mountains: Along Hwy. US-50, 0.4 mile southwest of Phillips. 1829 Comment
  UCD99479  Persicaria lapathifolia G. K. Helmkamp; E. A. Helmkamp 2007-9-10 12921 El Dorado Northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Diamond Springs; near junction of CA-49 and Patterson Drive. 530 Comment
  UCR170227  Torreyochloa pallida var. pauciflora George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9930 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
  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
  UCR170239  Eriogonum marifolium George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9914 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
  UCR170241  Monardella odoratissima subsp. pallida George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9912 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
  UCR170354  Eriogonum nudum var. oblongifolium George K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9858 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
  UCR170359  Galium George K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9853 El Dorado Northern Sierra Nevada Foothills, E of Sacramento; Sly Park Road (County Highway E-16), c. 1 mi SW of Jenkinson Lake 1067 Comment
  UCR170362  Madia elegans subsp. elegans George K. Helmkamp, Elizabeth Helmkamp 2005-9-9 9849 El Dorado Northern Sierra Nevada Foothills, E of Sacramento; Squaw Hollow area at junction of Hanks Exchange Road and Ranch Road, 0.9 mi south of Pleasant Valley Road 683 Comment
  UCR170426  Centaurea solstitialis George K. Helmkamp, Elizabeth Helmkamp 2005-11-15 10021 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
  UCR170463  Prunella vulgaris George K. Helmkamp, Elizabeth Helmkamp 2005-11-15 10017 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
  UCR170573  Bidens frondosa George K. Helmkamp, E. A. Helmkamp 2005-9-9 9848 El Dorado Northern Sierra Nevada Foothills, E of Sacramento; Squaw Hollow area at junction of Hanks Exchange Road and Ranch Road, 0.9 mi south of Pleasant Valley Road 683 Comment
  UCR170583  Mentha spicata George K. Helmkamp, E. A. Helmkamp 2005-9-1 9824 El Dorado Northern Sierra Nevada Foothills, E of Sacramento; Sand Canyon Road, 0.3 mi east of Calif. Highway 49 and Logtown Ridge 280 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
Read comments
May 18 2007
  UCR170660  Polygonum punctatum George K. Helmkamp, E. A. Helmkamp 2005-8-14 9814 El Dorado Northern Sierra Nevada Foothills, Diamond Springs. Lake Oaks mobile home park 521 Comment
  UCR171035  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2005-7-31 9721 El Dorado Northern Sierra Nevada Foothills, Junction of Ice House Road and Calif. Highway 50, east of Pollock Pines 1006 Comment
  UCR171117  Ceanothus cuneatus subsp. cuneatus George K. Helmkamp, E. A. Helmkamp 2006-3-19 10081 El Dorado Northern Sierra Nevada Foothills, Junction of Crystal road and Calif. Highway 49, 3.8 mi south of El Dorado 573 Comment
  UCR171180  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2005-7-31 9757 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
  UCR171197  Carex hoodii George K. Helmkamp, E. A. Helmkamp 2005-7-31 9748 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
  UCR171230  Penstemon laetus subsp. laetus George K. Helmkamp, E. A. Helmkamp 2005-7-11 9708 El Dorado Northern Sierra Nevada Foothills, Pollock Pines area just south of US Highway 50 along County Road #5 1159 Comment
  UCR171246  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2005-7-11 9700 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
  UCR171403  Melilotus albus George K. Helmkamp, E. A. Helmkamp 2005-7-31 9725 A El Dorado Northern Sierra Nevada Foothills, Junction of Ice House Road and Calif. Highway 50, east of Pollock Pines 1006 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
  UCR172639  Capsella bursa-pastoris George K. Helmkamp, Elizabeth Helmkamp 2006-4-20 10208 El Dorado Northern Sierra Nevada Foothills, Between N and Middle forks of Cosumnes River; Junction of Sand Ridge Road and Cutaway Lane, 2.1 mi SW of Somerset 665 Comment
  UCR172644  Dodecatheon pulchellum George K. Helmkamp, Elizabeth Helmkamp 2006-4-20 10203 El Dorado Northern Sierra Nevada Foothills, Between N and Middle forks of Cosumnes River; Junction of Sand Ridge Road and Cutaway Lane, 2.1 mi SW of Somerset 665 Comment
  UCR173285  Nemophila heterophylla George K. Helmkamp, Elizabeth Helmkamp 2006-5-18 10467 El Dorado Northern Sierra Nevada Foothills, S side of Peavine Ridge; along Meadow Canyon Road, 3.4 mi. west of its junction with Ice House Canyon Road (N of US Hwy 50 and SSE of Union Valley Reservoir) 1189 Comment
  UCR173296  Petrorhagia dubia George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10253 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
  UCR173322  Eriophyllum lanatum var. grandiflorum George K. Helmkamp, Elizabeth Helmkamp 2006-5-20 10482 El Dorado Northern Sierra Nevada foothills, along Calif. Hwy 49 between Diamond Springs and Placerville; 0.4 mi. N of Weber Creek 549 Comment
  UCR173328  Genista monspessulana George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10252 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
  UCR173330  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
  UCR173480  Melica harfordii George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10540 El Dorado Northern Sierra Nevada Mountains, Along Ice House Canyon Road, 10.6 mi. south of Wentworth Springs Road (just south of the Jones fork of Silver Creek and SE of Union Valley Reservoir) 1509 Comment
  UCR173497  Taraxacum officinale George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10538 El Dorado Northern Sierra Nevada Mountains, Along Ice House Canyon Road, 10.6 mi. south of Wentworth Springs Road (just south of the Jones fork of Silver Creek and SE of Union Valley Reservoir) 1509 Comment
  UCR173595  Veronica serpyllifolia subsp. humifusa George K. Helmkamp, Elizabeth Helmkamp 2006-5-1 10289 El Dorado Northern Sierra Nevada foothills, corner of Pleasant Valley Road and Patterson Drive; west end of Diamond Springs 537 Comment
  UCR173673  Plantago erecta George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10175 El Dorado Northern Sierra Nevada Foothills, E of Sacramento, between N and Middle Forks of the Cosumnes River; Sand Ridge Road, 3.1 mi. east of Calif. Hwy 49 534 Comment
  UCR173726  Vicia sativa subsp. sativa George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10176 El Dorado Northern Sierra Nevada Foothills, E of Sacramento, between N and Middle Forks of the Cosumnes River; Sand Ridge Road, 3.1 mi. east of Calif. Hwy 49 534 Comment
  UCR173807  Hypericum perforatum George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-10 10664 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 6.1 miles north of Hwy US-50 1653 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
  UCR173843  Castilleja tenuis George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-10 10668 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 6.1 miles north of Hwy US-50 1653 Comment
  UCR173905  Briza minor George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10615 El Dorado Northern Sierra Nevada foothills, along Rock Creek Road, 0.1 mile east of its junction with Calif. Hwy 193 387 Comment
  UCR173914  Thalictrum fendleri var. fendleri George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10751 El Dorado Northern Sierra Nevada Mountains, 8 miles east of Ice House Road on the road to Wright's Lake 2000 Comment
  UCR173919  Allium campanulatum George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10744 El Dorado Northern Sierra Nevada Mountains, 6.0 miles east of Ice House Road on the road to Wright's Lake 2000 Comment
  UCR173954  Phacelia mutabilis George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10728 El Dorado Northern Sierra Nevada Mountains, 0.8 mile east of Ice House Road on the road to Wright's Lake 1672 Comment
  UCR173959  Trillium angustipetalum George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10535 El Dorado Northern Sierra Nevada Mountains, Along Ice House Canyon Road, 10.6 mi. south of Wentworth Springs Road (just south of the Jones fork of Silver Creek and SE of Union Valley Reservoir) 1509 Comment
  UCR173962  Erysimum perenne George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10734 El Dorado Northern Sierra Nevada Mountains, 5.5 miles east of Ice House Road on the road to Wright's Lake 1860 Comment
  UCR173968  Carex limosa George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10735 El Dorado Northern Sierra Nevada Mountains, 5.5 miles east of Ice House Road on the road to Wright's Lake 1860 Comment
  UCR174700  Elymus glaucus subsp. glaucus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-7 10653 El Dorado Northern Sierra Nevada foothills, hiking trail, 3.5 miles northwest of Placerville along Calif. Hwy 49 512 Comment
  UCR175643  Carex specifica George K. Helmkamp, E. A. Helmkamp 2006-7-7 10834 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR175654  Valeriana californica George K. Helmkamp, E. A. Helmkamp 2006-7-7 10819 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR175659  Delphinium George K. Helmkamp, E. A. Helmkamp 2006-7-12 10998 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR175662  Calochortus minimus George K. Helmkamp, E. A. Helmkamp 2006-7-7 10830 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR175668  Erigeron glacialis George K. Helmkamp, E. A. Helmkamp 2006-7-7 10833 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR175699  Polygonum phytolaccifolium George K. Helmkamp, E. A. Helmkamp 2006-7-10 10936 El Dorado Northern Sierra Nevada Mountains, 1.1 miles west of Silver Creek along the road from Ice House Reservoir to Wright's Lake 2043 Comment
  UCR175707  Mimulus tilingii George K. Helmkamp, E. A. Helmkamp 2006-7-10 10932 El Dorado Northern Sierra Nevada Mountains, 1.1 miles west of Silver Creek along the road from Ice House Reservoir to Wright's Lake 2043 Comment
  UCR175711  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2006-7-10 10924 El Dorado Northern Sierra Nevada Mountains, 0.3 mile west of the junction of Wright's Lake Road and the road from Ice House Reservoir 2012 Comment
  UCR175714  Gayophytum decipiens George K. Helmkamp, E. A. Helmkamp 2006-7-7 10873 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR175733  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2006-7-31 11063 El Dorado Northern Sierra Nevada Mountains, along Wrights Lake Road (Forest Route 4), 3.3 miles north of Hwy US-50 2049 Comment
  UCR175772  Trifolium longipes var. nevadense George 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
  UCR175778  Lupinus angustiflorus George K. Helmkamp, E. A. Helmkamp 2006-7-7 10869 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176007  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp 2006-7-28 11014 El Dorado Northern Sierra Nevada Mtns, Echo Summit along Hwy US-50; at entrance to the road maintenance station 2245 Comment
  UCR176011  Eriogonum umbellatum var. furcosum George K. Helmkamp, E. A. Helmkamp 2006-7-28 11023 El Dorado Northern Sierra Nevada Mtns, North Truckee River Rd., 1.4 miles north of Calif. Hwy 50 and c. 6 miles south of Lake Tahoe 2009 Comment
  UCR176033  Potentilla glandulosa subsp. nevadensis George K. Helmkamp, E. A. Helmkamp 2006-7-12 10972 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
  UCR176051  Lupinus lepidus var. confertus George K. Helmkamp, E. A. Helmkamp 2006-7-28 11020 El Dorado Northern Sierra Nevada Mtns, North Truckee River Rd., 1.4 miles north of Calif. Hwy 50 and c. 6 miles south of Lake Tahoe 2009 Comment
  UCR176212  Erigeron peregrinus George K. Helmkamp, E. A. Helmkamp 2006-7-7 10859 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176258  Erigeron coulteri George K. Helmkamp, E. A. Helmkamp 2006-7-12 10965 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR176292  Festuca arundinacea George K. Helmkamp, Elizabeth Helmkamp 2006-5-18 10461 El Dorado Northern Sierra Nevada Foothills, S side of Peavine Ridge; along Meadow Canyon Road, 3.4 mi. west of its junction with Ice House Canyon Road (N of US Hwy 50 and SSE of Union Valley Reservoir) 1189 Comment
  UCR176298  Sisymbrium officinale George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10262 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
  UCR176405  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2006-8-7 11160 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 21.0 miles east of its junction with Sly Park Road 2174 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
  UCR176419  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2006-7-10 10886 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 6.1 miles north of Hwy US-50; at the junction with the road from Ice House Reservoir 2030 Comment
  UCR176454  Lupinus lepidus var. sellulus George K. Helmkamp, E. A. Helmkamp 2006-7-31 11086 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
  UCR176459  Ligusticum grayi George K. Helmkamp, E. A. Helmkamp 2006-7-31 11081 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
  UCR176468  Deschampsia cespitosa subsp. cespitosa George K. Helmkamp, E. A. Helmkamp 2006-7-31 11096 El Dorado Northern Sierra Nevada Mountains, junction of Wright's Lake Road (Forestry Route 4) and the road from Ice House Reservoir 2018 Comment
  UCR176966  Trifolium subterraneum George K. Helmkamp, Elizabeth Helmkamp 2006-5-1 10284 El Dorado Northern Sierra Nevada foothills, corner of Pleasant Valley Road and Patterson Drive; west end of Diamond Springs 537 Comment
  UCR177125  Cyperus eragrostis George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10256 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
  UCR177876  Juncus ensifolius George K. Helmkamp, E. A. Helmkamp 2006-8-7 11197 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring; Tragedy Spring Road, 0.3 mile north of Calif. Hwy 88 2424 Comment
  UCR178632  Euphorbia serpillifolia George K. Helmkamp, E. A. Helmkamp 2006-9-2 11327 El Dorado Northern Sierra Nevada Mountains Foothills, along Georgetown Road, 0.3 mi northeast of Georgetown 840 Comment
  UCR178638  Ailanthus altissima George K. Helmkamp, E. A. Helmkamp 2006-9-2 11335 El Dorado Northern Sierra Nevada Mountains Foothills, Along Calif. Hwy 193, 0.3 mile south of the junction with Calif. Hwy 49 in Placerville 534 Comment
  UCR178642  Castilleja tenuis George K. Helmkamp, E. A. Helmkamp 2006-9-7 11356 El Dorado Northern Sierra Nevada Mountains, Ice House Road. Robbs Valley near Robbs Hut junction 1720 Comment
  UCR178648  Quercus kelloggii George K. Helmkamp, E. A. Helmkamp 2006-9-20 11432 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road 1.8 miles north of junction with Hwy US-50 1817 Comment
  UCR178968  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2006-8-30 11319 El Dorado Northern Sierra Nevada Mountains, 0.5 mi north of Calif. Hwy 88 on road to Kirkwood Campground, which is beside Kirkwood Lake 2338 Comment
  UCR179222  Dactylis glomerata George K. Helmkamp, E. A. Helmkamp 2006-9-12 11382 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
  UCR179316  Ribes roezlii George K. Helmkamp, E. A. Helmkamp 2006-8-24 11280 El Dorado Northern Sierra Nevada Mountains Foothills, Ice House Road, 2.3 miles south of Union Reservoir Road 1552 Comment
  UCR179356  Melilotus albus George K. Helmkamp, E. A. Helmkamp 2006-9-20 11414 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Ice House Road [at Riverton] and US-50 east of Pacific 1000 Comment
  UCR179367  Abies concolor var. lowiana George K. Helmkamp, E. A. Helmkamp 2006-9-20 11430 B El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road 3.3 miles north of Hwy US-50 2058 Comment
  UCR179396  Trifolium obtusiflorum George K. Helmkamp, E. A. Helmkamp 2006-9-20 11411 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Ice House Road [at Riverton] and US-50 east of Pacific 1000 Comment
  UCR179798  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2006-9-29 11441 El Dorado Northern Sierra Nevada Mountains Foothills, Placerville outskirts; Calif. Hwy 49, 2 miles north of jct with US-50 549 Comment
  UCR179825  Setaria pumila George K. Helmkamp, E. A. Helmkamp 2006-10-20 11541 El Dorado Northern Sierra Nevada Mountains Foothills, Bucks Bar Road, 3.9 miles south of Pleasant Valley Road, general vicinity of Somerset 625 Comment
  UCR184802  Silene californica George K. Helmkamp, E. A. Helmkamp 2007-5-9 11984 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
  UCR184808  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2007-5-7 11965 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
  UCR184810  Wyethia helenioides George K. Helmkamp, E. A. Helmkamp 2007-5-7 11962 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
  UCR185338  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2007-4-20 11769 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
  UCR185342  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2007-4-20 11772 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
  UCR188020  Sidalcea malviflora subsp. asprella George K. Helmkamp, E. A. Helmkamp 2007-5-1 11929 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-49, 1.5 miles northwest of US-50 in Placerville 549 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
  UCR188241  Sedum obtusatum subsp. obtusatum George K. Helmkamp, E. A. Helmkamp 2007-4-27 11862 El Dorado Foothills, Northern Sierra Nevada Mountains, Bridal Veil Falls, Esmeralda Creek, along US-50 east of Pacific House 1027 Comment
  UCR188438  Malva nicaeensis George K. Helmkamp, E. A. Helmkamp 2007-4-29 11875 El Dorado Foothills, Northern Sierra Nevada Mountains, Lake Oaks mobile home park, Diamond Springs 524 Comment
  UCR188836  Lepidium nitidum var. nitidum George K. Helmkamp, E. A. Helmkamp 2007-3-23 11685 El Dorado Northern Sierra Nevada Mountains Foothills, hills bordering the east end of Sacramento Valley; Bass Lake Road at the southeast end of Bass Lake 381 Comment
  UCR189006  Ribes viscosissimum George K. Helmkamp, Elizabeth Helmkamp 2007-6-20 12390 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 22.8 miles ESE of its junction with Sly Park Road at Jenkinson Lake 2265 Comment
  UCR189214  Scirpus microcarpus George K. Helmkamp, E. A. Helmkamp 2007-9-11 12939 El Dorado Northern Sierra Nevada Mountains, along Hwy US-50 at Echo Summit 2256 Comment
  UCR189219  Lupinus polyphyllus var. burkei George K. Helmkamp, Elizabeth Helmkamp 2007-6-20 12404 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
  UCR189294  Astragalus bolanderi George K. Helmkamp, E. A. Helmkamp 2007-9-11 12924 El Dorado Northern Sierra Nevada Mountains, along Hwy US-50, 0.4 mile southwest of Phillips 1829 Comment
  UCR189452  Claytonia parviflora subsp. parviflora George K. Helmkamp, E. A. Helmkamp 2007-3-10 11605 El Dorado Northern Sierra Nevada Mountains Foothills, Rattlesnake Bar Rd, 3.0 miles southwest of Calif. Hwy 49, SW of Pilot Hill 390 Comment
  UCR189458  Lupinus polyphyllus var. burkei George K. Helmkamp, E. A. Helmkamp 2007-8-4 12709 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail at Leek Spring meadow, about 2 miles northwest of CA-88 2238 Comment
  UCR189481  Geranium carolinianum George K. Helmkamp, E. A. Helmkamp 2007-3-22 11681 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
  UCR189492  Lepidium nitidum var. nitidum George K. Helmkamp, E. A. Helmkamp 2007-3-22 11674 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
  UCR189603  Monardella odoratissima George K. Helmkamp, Elizabeth Helmkamp, Amy Barnes 2007-6-20 12375 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 17.2 miles ESE of its junction with Sly Park Road at Jenkinson Lake 2128 Comment
  UCR189916  Holocarpha virgata subsp. virgata George K. Helmkamp, E. A. Helmkamp 2007-9-9 12908 El Dorado Foothills, northern Sierra Nevada Mountains, along South Shingle Road 2.5 miles south of Shingle Springs 399 Comment
  UCR190137  Chrysolepis sempervirens George K. Helmkamp, E. A. Helmkamp 2007-8-21 12794 El Dorado Northern Sierra Nevada Mountains, Ice House Road at the junction to the lower campground and boat ramp of Loon Lake 1976 Comment
  UCR190296  Eriogonum wrightii var. subscaposum George K. Helmkamp, E. A. Helmkamp 2007-8-21 12796 El Dorado Northern Sierra Nevada Mountains, Ice House Road 0.2 mile south of the north spillway of Loon Lake 1966 Comment
  UCR190576  Dodecatheon alpinum George K. Helmkamp 2007-6-29 12443 El Dorado Northern Sierra Nevada Mountains, Kirkwood Lake, about 0.5 mile north of CA-88 on the road to the campground 2351 Comment
  UCR190580  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2007-9-2 12883 El Dorado Northern Sierra Nevada Mountains Foothills, Grizzly Flat road 10.4 miles ESE of Somerset. 1107 Comment
  UCR190632  Madia elegans subsp. elegans George K. Helmkamp, E. A. Helmkamp 2007-9-2 12877 El Dorado Northern Sierra Nevada Mountains Foothills, Grizzly Flat Road 5.2 miles ESE of Somerset, just west of Coles Station 957 Comment
  UCR190638  Echinochloa colona George K. Helmkamp, E. A. Helmkamp 2007-7-23 12566 El Dorado Northern Sierra Nevada Mountains Foothills, Rock Creek road, 7.1 miles east of its junction with CA-193 567 Comment
  UCR191052  Fragaria vesca George K. Helmkamp, E. A. Helmkamp 2007-6-6 12283 El Dorado Northern Sierra Nevada Mountains, Bonetti Road, 3.2 miles south of it junction with Mormon Emigrant Trail, east of Jenkinson Lake and near Diamond Creek 1189 Comment
  UCR191064  Rubus parviflorus George K. Helmkamp, E. A. Helmkamp 2007-6-6 12280 El Dorado Northern Sierra Nevada Mountains, Bonetti Road, 3.2 miles south of it junction with Mormon Emigrant Trail, east of Jenkinson Lake and near Diamond Creek 1189 Comment
  UCR191069  Festuca microstachys George K. Helmkamp, E. A. Helmkamp 2007-6-6 12275 El Dorado Northern Sierra Nevada Mountains, junction of Bonetti Road and Mormon Emigrant Trail, east of Jenkinson Lake 1226 Comment
  UCR191081  Vicia americana George K. Helmkamp, E. A. Helmkamp 2007-6-8 12298 El Dorado Northern Sierra Nevada Mountains, Bonetti Road, 2.0 miles south of Mormon Emigrant Trail 1189 Comment
  UCR191098  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2007-6-8 12291 El Dorado Northern Sierra Nevada Mountains, Bonetti Road, 2.0 miles south of Mormon Emigrant Trail 1189 Comment
  UCR192602  Myosotis laxa George K. Helmkamp, E. A. Helmkamp 2007-5-31 12231 El Dorado Northern Sierra Nevada Mountains, Forest Route 42, 1.2 miles west of its junction with Wrights Lake Road, generally between Wrights Lake and Ice House Reservoir 2021 Comment
  UCR193174  Allium campanulatum George K. Helmkamp, E. A. Helmkamp 2007-6-6 12262 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 8.3 miles east of its junction with Sly Park Road 1616 Comment
  UCR193179  Potentilla glandulosa subsp. ashlandica George K. Helmkamp, E. A. Helmkamp 2007-6-6 12267 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 6.3 miles east of its junction with Sly Park Road 1607 Comment
  UCR193184  Allium campanulatum George K. Helmkamp, E. A. Helmkamp 2007-5-31 12243 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 1.6 miles west of its junction with Wright's Lake Road, generally between Wright's Lake and Ice House Reservoir 1851 Comment
  UCR193189  Triteleia ixioides subsp. scabra George K. Helmkamp, E. A. Helmkamp 2007-6-6 12265 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 8.3 miles east of its junction with Sly Park Road 1616 Comment
  UCR194916  Layia gaillardioides George K. Helmkamp, E. A. Helmkamp 2007-5-22 12045 El Dorado Northern Sierra Nevada Mountains Foothills, Sly Park Road, 2.8 miles southeast of US-50 976 Comment
  UCR195153  Delphinium hansenii subsp. ewanianum George K. Helmkamp, E. A. Helmkamp 2007-5-27 12148 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
  UCR196768  Holodiscus discolor George K. Helmkamp, E. A. Helmkamp 2008-6-3 13582 El Dorado Sierra Nevada Mountains, Forbay Road, 7.1 miles northwest of CA-50 (road junction in Pollock Pines), no-outlet road leading to the South Fork of the American River 716 Comment
  UCR196799  Eriodictyon californicum George K. Helmkamp, E. A. Helmkamp 2008-6-5 13610 El Dorado Sierra Nevada Mountains Foothills, Forbay Road. 0.5 mile north of its crossing of the South Fork American River 668 Comment
  UCR196838  Polystichum imbricans subsp. curtum George K. Helmkamp, E. A. Helmkamp 2008-6-3 13571 El Dorado Sierra Nevada Mountains, Forbay Road, 7.1 miles northwest of CA-50 (road junction in Pollock Pines), no-outlet road leading to the South Fork of the American River 716 Comment
  UCR196842  Potentilla glandulosa subsp. glandulosa George K. Helmkamp, E. A. Helmkamp 2008-6-3 13566 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
  UCR196873  Trifolium obtusiflorum George K. Helmkamp, E. A. Helmkamp 2008-6-5 13599 El Dorado Sierra Nevada Mountains Foothills, Forbay Road at crossing of the South Fork American River 595 Comment
  UCR196883  Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2008-6-5 13611 El Dorado Sierra Nevada Mountains Foothills, Forbay Road. 0.5 mile north of its crossing of the South Fork American River 668 Comment
  UCR197245  Lotus micranthus George K. Helmkamp, E. A. Helmkamp 2008-4-25 13323 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR197317  Anemone occidentalis George K. Helmkamp, E. A. Helmkamp 2008-7-11 13774 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
  UCR197323  Epilobium George K. Helmkamp, E. A. Helmkamp 2008-7-11 13773 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
  UCR197366  Vicia sativa subsp. sativa George K. Helmkamp, E. A. Helmkamp 2008-4-25 13336 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
  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
  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
  UCR197546  Deschampsia danthonioides George K. Helmkamp, E. A. Helmkamp 2008-6-9 13655 El Dorado Northern Sierra Nevada Mountains, Cat Creek Road, 3.6 miles north of its junction with CA-88, the jct. is 4.2 miles east of Cook's Station 1753 Comment
  UCR197826  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2008-7-11 13762 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring Road, 8.0 miles southwest of Kirkwood and 0.1 mile north of its junction with CA-88 2421 Comment
  UCR198426  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2008-4-30 13771 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
  UCR198542  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
  UCR200921  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2008-9-9 14078 El Dorado Foothills, northern Sierra Nevada Mountains, junction of Bear Creek Road and Meadow Brook Road at Bear Creek; east of CA-193 and south of Georgetown 678 Comment
  UCR201759  Epilobium oregonense George K. Helmkamp, E. A. Helmkamp 2008-8-1 13951 El Dorado Northern Sierra Nevada Mountains, Dark Lake 0.4 mile northwest of the entrance to Wright's Lake along Wright's Lake Road 2148 Comment
  UCR206000  Erodium cicutarium George K. Helmkamp, E. A. Helmkamp 2009-6-3 14878 El Dorado Sierra Nevada Mountains Foothills, Pony Express Trail, 0.7 mile east of its junction with Sly Park Road in Pollock Pines 851 Comment
  UCR206069  Thalictrum fendleri var. fendleri George K. Helmkamp, E. A. Helmkamp 2008-8-1 13923 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.3 miles north of its junction with CA-50 2043 Comment
  UCR206071  Elymus elymoides George K. Helmkamp, E. A. Helmkamp 2008-8-1 13926 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.3 miles north of its junction with CA-50 2043 Comment
  UCR206081  Allophyllum integrifolium George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13919 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.4 miles north of its junction with CA Hwy 50 2043 Comment
  UCR206092  Acer macrophyllum George K. Helmkamp, E. A. Helmkamp 2009-6-3 14881 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
  UCR206098  Galium porrigens var. tenue George K. Helmkamp, E. A. Helmkamp 2009-6-3 14904 El Dorado Northern Sierra Nevada Mountains, Forbay Road, 4.7 miles northwest of its junction with Pony Express Trail in Pollock Pines 945 Comment
  UCR206325  Portulaca oleracea George K. Helmkamp, E. A. Helmkamp 2009-5-29 14868 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR206344  Lupinus stiversii George K. Helmkamp, E. A. Helmkamp 2009-5-19 14716 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 0.2 miles west of its junction with Happy Valley Cutoff road 561 Comment
  UCR206581  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2009-5-24 14792 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road 640 Comment
  UCR206703  Pinus ponderosa George K. Helmkamp, E. A. Helmkamp 2009-3-19 14435 El Dorado Sierra Nevada Mtns. Foothills, Meadow Brook Road, 1.3 miles east of CA-193 and at the junction with Bear Creek Rd 680 Comment
  UCR206721  Echinochloa colona George K. Helmkamp, Amy Barnes 2009-7-7 15114 El Dorado Sierra Nevada Mountains Foothills, Forbay Road, at the north side of its crossing of the South Fork American River, about 7 miles north of Pollock Pines 579 Comment
  UCR206747  Prunella vulgaris var. lanceolata George K. Helmkamp, E. A. Helmkamp 2009-6-22 15031 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 527 Comment
  UCR206816  Mimulus torreyi George K. Helmkamp, Amy Barnes 2009-7-7 15115 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, c. 1.3 miles north of Ice House Store 1660 Comment
  UCR206856  Pentagramma triangularis subsp. triangularis George K. Helmkamp, E. A. Helmkamp 2009-3-6 14343 El Dorado Northern Sierra Nevada Mtns. Foothills, Rock Creek Road, 4.9 miles east of its junction with CA-193 and near Rock Creek 483 Comment
  UCR206867  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2009-6-25 15045 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
  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
  UCR206896  Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 2009-3-5 14333 El Dorado Northern Sierra Nevada Mtns. Foothills, Sand Ridge Road 4.3 miles east of its junction with CA-49 494 Comment
  UCR206990  Bromus carinatus George K. Helmkamp, E. A. Helmkamp 2009-7-2 15092 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR207000  Lythrum hyssopifolia George K. Helmkamp, E. A. Helmkamp 2009-5-26 14806 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR207006  Solidago canadensis subsp. elongata George K. Helmkamp, Amy Barnes 2009-7-8 15165 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207012  Pinus contorta subsp. murrayana George K. Helmkamp, E. A. Helmkamp 2009-7-22 15266 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 4.1 miles north of its junction with US-50 and at the north side of Lyons Creek crossing 2015 Comment
  UCR207018  Ligusticum grayi George K. Helmkamp, E. A. Helmkamp 2009-7-22 15260 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 4.1 miles north of its junction with US-50 and at the north side of Lyons Creek crossing 2015 Comment
  UCR207163  Lupinus latifolius var. columbianus George K. Helmkamp, E. A. Helmkamp 2009-7-22 15276 El Dorado Sierra Nevada Mountains, Forestry Route 42, 1.6 miles west of its junction with Wrights Lake Road 1851 Comment
  UCR207867  Polypodium calirhiza George K. Helmkamp, E. A. Helmkamp 2009-5-14 14695 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  UCR207896  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2009-5-14 14687 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  UCR207902  Triteleia ixioides subsp. scabra George K. Helmkamp, E. A. Helmkamp 2009-5-14 14690 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 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
  UCR208337  Galium aparine George K. Helmkamp, E. A. Helmkamp 2009-4-21 14553 El Dorado Sierra Nevada Mountains Foothills, along CA-193, 1.1 miles south of the South Fork American River at Chili Bar 381 Comment
  UCR209022  Juglans hindsii George K. Helmkamp, E. A. Helmkamp 2009-8-21 15516 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; Patterson Road, 0.1 mile south of CA-49 527 Comment
  UCR209028  Lupinus latifolius var. columbianus George K. Helmkamp, E. A. Helmkamp 2009-8-19 15494 El Dorado Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  UCR209030  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2009-8-19 15496 El Dorado Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  UCR209040  Madia bolanderi George K. Helmkamp, E. A. Helmkamp 2009-8-19 15486 El Dorado Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  UCR209711  Chenopodium George K. Helmkamp, E. A. Helmkamp 2009-8-8 15418 El Dorado Foothills, northern Sierra Nevada Mountains, Pleasant Valley [Sly Park] Road, 0.3 mile west of Pleasant Valley 595 Comment
  UCR210046  Echinochloa colona George K. Helmkamp, E. A. Helmkamp 2009-8-14 15462 El Dorado Foothills, northern Sierra Nevada Mountains, Bucks Bar Road, 3.9 miles south of Pleasant Valley Road 625 Comment
  UCR217147  Polypodium calirhiza George K. Helmkamp, E. A. Helmkamp 2010-5-14 16039 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 1.1 mi. NE (69 deg. ) of Somerset, just west of the bridge over the Cosumnes River 544 Comment
  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
  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
  UCR217330  Lupinus albicaulis George K. Helmkamp, E. A. Helmkamp 2010-6-14 16284 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
  UCR217401  Vicia villosa subsp. varia George K. Helmkamp, E. A. Helmkamp 2010-6-14 16296 El Dorado Sierra Nevada Mountains Foothills, County Highway E-16, 1.3 miles southwest of Somerset 530 Comment
  UCR217851  Valerianella locusta George K. Helmkamp, E. A. Helmkamp 2010-5-22 16088 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
  UCR217872  Plagiobothrys tenellus George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16126 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 2.9 miles east of its junction with Perry Creek road 1012 Comment
  UCR217878  Scleranthus annuus George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16127 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 2.9 miles east of its junction with Perry Creek road 1012 Comment
  UCR217882  Sanicula crassicaulis George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16134 El Dorado Sierra Nevada Mountains Foothills, along Perry Creek, about 0.2 mile south of Slug Gulch Road, at a point 4.7 miles east of junction with Perry Creek Road 1027 Comment
  UCR217888  Trifolium microcephalum George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16118 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.7 rd. miles east of its junction with Perry Creek road, air 3.9 mi. ESE (98 deg. ) of Fair Play 1082 Comment
  UCR217891  Madia elegans George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16117 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.7 rd. miles east of its junction with Perry Creek road, air 3.9 mi. ESE (98 deg. ) of Fair Play 1082 Comment
  UCR217905  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2010-5-22 16087 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
  UCR217914  Lupinus albifrons var. collinus George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-6 16469 El Dorado Sierra Nevada Mountains, Silver Fork Road, 4.1 miles south of its junction with US-50 in Kyburz 1500 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
  UCR218082  Galium aparine George K. Helmkamp, E. A. Helmkamp 2010-7-9 16501 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
  UCR218088  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2010-7-9 16494 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
  UCR218091  Rubus parviflorus George K. Helmkamp, E. A. Helmkamp 2010-7-23 16626 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 1.8 miles west of its junction with Wright's Lake Road, 4 mi. NE (21 deg. ) of Kyburz 2034 Comment
  UCR218252  Gilia capillaris George K. Helmkamp, E. A. Helmkamp 2010-7-23 16601 El Dorado Northern Sierra Nevada Mountains, trailhead at the east end of Wright's Lake, 1.2 miles north of the visitor's center at the lake entrance 2127 Comment
  UCR218258  Lupinus polyphyllus var. burkei George K. Helmkamp, E. A. Helmkamp 2010-7-23 16593 El Dorado Northern Sierra Nevada Mountains, trailhead at the east end of Wright's Lake, 1.2 miles north of the visitor's center at the lake entrance 2127 Comment
  UCR218264  Claytonia parviflora subsp. grandiflora George K. Helmkamp, E. A. Helmkamp 2010-5-22 16078 El Dorado Sierra Nevada Mountains Foothills, at the junction of Perry Creek Road and Slug Gulch Road, 0.5 mi. northeast of the village of Fairplay 677 Comment
  UCR218269  Polygonum douglasii subsp. douglasii George K. Helmkamp, E. A. Helmkamp 2010-7-23 16605 A El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road at the entrance to a camping area, 0.2 mile west of the lake, 5.5 miles NE (35 deg. ) of Kyburz 2114 Comment
  UCR218271  Calochortus leichtlinii George K. Helmkamp, E. A. Helmkamp 2010-7-23 16604 El Dorado Northern Sierra Nevada Mountains, trailhead at the east end of Wright's Lake, 1.2 miles north of the visitor's center at the lake entrance 2127 Comment
  UCR218281  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2010-7-23 16633 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 1.8 miles west of its junction with Wright's Lake Road, 4 mi. NE (21 deg. ) of Kyburz 2034 Comment
  UCR218980  Agoseris retrorsa George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16331 El Dorado Sierra Nevada Mountains Foothills, about 0.1 mile south of Slug Gulch Road at a point 4.7 miles east of its junction with Perry Creek Road 1021 Comment
  UCR218997  Schoenoplectus acutus var. occidentalis George K. Helmkamp, E. A. Helmkamp 2009-9-13 15607 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; 0.2 mile south of the junction of Patterson Drive and CA-49/Pleasant Valley Road 529 Comment
  UCR219143  Hypericum perforatum George K. Helmkamp, E. A. Helmkamp 2009-9-29 15656 El Dorado Sierra Nevada Mountains Foothills, Canyon Valley Rd. in the east end of Diamond Springs, c. 0.1 mile SE of Pleasant Valley Road 567 Comment
  UCR219151  Brassica geniculata George K. Helmkamp, E. A. Helmkamp 2009-9-30 15663 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
  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
  UCR219665  Senecio triangularis George K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16564 El Dorado Northern Sierra Nevada Mountains, southeast side of Wright's Lake, 5.8 mi. NE (34 deg. ) of Kyburz 2085 Comment
  UCR219677  Penstemon rydbergii var. oreocharis George K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16581 El Dorado Northern Sierra Nevada Mountains, southernmost point of Wright's Lake, 5.6 mi. NE (33 deg. ) of Kyburz 2085 Comment
  UCR219687  Kickxia spuria George K. Helmkamp, E. A. Helmkamp 2009-10-23 15707 El Dorado Sierra Nevada Mountains Foothills, Diamond Springs, unnamed dirt road 0.1 mile southeast of the Patterson Lake dam 520 Comment
  UCR222363  Silene californica George K. Helmkamp, Mary Alice Barnes, Mary Jane Ganive 2010-6-13 16276 El Dorado Sierra Nevada Mountains Foothills, along Forebay Road, 2.1 miles northwest of the Forebay Bridge over South Fork American River 828 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
  UCR222980  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2010-4-23 15933 El Dorado Sierra Nevada Mountains Foothills, Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  UCR224227  Vicia sativa subsp. sativa George K. Helmkamp, E. A. Helmkamp 2010-4-23 15920 El Dorado Sierra Nevada Mountains Foothills, along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing 200 Comment
  UCR224231  Castilleja lineariloba George K. Helmkamp, E. A. Helmkamp 2010-4-23 15915 El Dorado Sierra Nevada Mountains Foothills, along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing 200 Comment
  UCR224241  Ceanothus integerrimus George K. Helmkamp, E. A. Helmkamp 2010-4-24 15938 El Dorado Sierra Nevada Mountains Foothills, Oak Ridge Road just east of its junction with Blend-O-Green Way, jct. is north of Green Valley Road 390 Comment
  UCR229394  Festuca occidentalis George K. Helmkamp, E. A. Helmkamp 2011-7-30 17939 El Dorado Northern Sierra Nevada Mountains, North-South Road, 5.5 miles north of its junction with Omo Ranch Road, east side of bridge over Pi Pi Creek 1209 Comment
  UCR229532  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2011-7-30 17945 El Dorado Northern Sierra Nevada Mountains, North-South Road, 5.5 miles north of its junction with Omo Ranch Road, east side of bridge over Pi Pi Creek 1209 Comment
  UCR229583  Phacelia mutabilis George K. Helmkamp, E. A. Helmkamp 2011-7-30 17909 El Dorado Northern Sierra Nevada Mountains, 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
  UCR230667  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 2011-5-8 17225 El Dorado Northern Sierra Nevada Mountains Foothills, along Pleasant Valley Road, 0.6 mile NW of Pleasant Valley 716 Comment
  UCR233108A  Cyperus eragrostis George K. Helmkamp, E. A. Helmkamp 2011-10-13 18415 El Dorado Northern Sierra Nevada Mountains Foothills, Forebay Road, 8.1 miles northwest of Pollock Pines, at north side of bridge over the South Fork American River 596 Comment
  UCR233113B  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 2010-3-25 15762 El Dorado Sierra Nevada Mountains Foothills, junction of County Road 2233 and Missouri Flat Road, southwest edge of Placerville 532 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
  UCR233303  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2011-9-1 18212 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 4.7 miles south of its junction with US-50 in Kyburz, alongside Silver Fork American River 1500 Comment
  UCR233321  Rorippa curvipes var. curvipes George K. Helmkamp, E. A. Helmkamp 2011-9-13 18267 El Dorado Northern Sierra Nevada Mountains, Foster Meadow Road, 0.6 miles north of its junction with CA-88 2136 Comment
  UCR233337  Perideridia parishii subsp. latifolia George K. Helmkamp, E. A. Helmkamp 2011-9-13 18256 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 22.6 miles southeast of Jenkinson's Lake, between Silver Fork Road and Hwy 88, 0.2 mi. NNE (23 deg. ) of Alder Hill 2274 Comment
  UCR233347  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2011-9-13 18266 El Dorado Northern Sierra Nevada Mountains, Foster Meadow Road, 0.6 miles north of its junction with CA-88 2136 Comment
  UCR233465  Aster oregonensis George K. Helmkamp, E. A. Helmkamp 2011-9-1 18204 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  UCR234167  Bromus George K. Helmkamp, E. A. Helmkamp 2011-7-7 17643 El Dorado Northern Sierra Nevada Mountains, Capps Crossing (Bonnetti) Road, 2.8 miles south of its junction with Mormon Emigrant Trail 1297 Comment
  UCR234185  Adenocaulon bicolor George K. Helmkamp, E. A. Helmkamp 2010-9-23 16961 El Dorado Northern Sierra Nevada Mountains, Forest Route 31, 3.9 miles north of its junction with Peavine Ridge Rd and Round Tent Canyon Road 1457 Comment
  UCR234190  Geum macrophyllum George K. Helmkamp, E. A. Helmkamp 2010-9-23 16964 El Dorado Northern Sierra Nevada Mountains, Forest Route 31, 3.9 miles north of its junction with Peavine Ridge Rd and Round Tent Canyon Road 1457 Comment
  UCR234196  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2010-9-23 16970 El Dorado Northern Sierra Nevada Mountains, Round Tent Canyon Road, 0.56 miles west of its junction with Peavine Ridge Road at Forest Route 31 1521 Comment
  UCR234203  Geranium molle George K. Helmkamp, E. A. Helmkamp 2011-4-12 17176 El Dorado Foothillls 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
  UCR235606  Layia pentachaeta subsp. pentachaeta George K. Helmkamp, E. A. Helmkamp 2012-4-27 18855 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
  UCR236987  Lupinus stiversii George K. Helmkamp, E. A. Helmkamp 2012-5-22 19041 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.8 miles southeast of US-50 in Kyburz; opposite the entrance to China Flat Campground 1479 Comment
  UCR236990  Athysanus pusillus George K. Helmkamp, E. A. Helmkamp 2012-5-22 19044 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.6 miles southeast of US-50 in Kyburz 1495 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
  UCR237012  Phlox gracilis George K. Helmkamp, E. A. Helmkamp 2012-5-22 19062 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
  UCR237052  Quercus wislizeni var. wislizeni George K. Helmkamp, E. A. Helmkamp 2012-4-24 18842 El Dorado Northern Sierra Nevada Mountains Foothills, Old Stage Road [Chicken Flat Rd.] at the junction with CA-193, N of Placerville 684 Comment
  UCR237058  Vicia sativa subsp. sativa George K. Helmkamp, E. A. Helmkamp 2012-4-24 18844 El Dorado Northern Sierra Nevada Mountains Foothills, beside CA-193 (Georgetown Rd.), 1.7 miles north of Rock Ridge Road, south of Kelsey 555 Comment
  UCR237064  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2012-5-18 19030 El Dorado Northern Sierra Nevada Mountains Foothills, Sly Park Road (Hwy E-16) at the Fire Station, 1.3 miles southwest of the junction with Mormon Emigrant Trail 1081 Comment
  UCR237069  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2012-5-18 19021 El Dorado Northern Sierra Nevada Mountains Foothills, Capps Crossing Road (Bonnetti Rd.), 0.1 mile northwest of the bridge over Diamond Creek, E of Jenkinson Lake and S of US Hwy 50 1186 Comment
  UCR237071  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2012-5-18 19023 El Dorado Northern Sierra Nevada Mountains Foothills, Capps Crossing Road (Bonnetti Rd.), 0.1 mile northwest of the bridge over Diamond Creek, E of Jenkinson Lake and S of US Hwy 50 1186 Comment
  UCR237081  Linanthus parviflorus George K. Helmkamp, E. A. Helmkamp 2012-4-24 18833 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
  UCR237552  Amsinckia lycopsoides George K. Helmkamp, E. A. Helmkamp 2012-3-9 18619 El Dorado Northern Sierra Nevada Mountains Foothills, Tierra De Dios Drive, 0.4 mile WNW of its junction with Country Club Drive, N of Hwy 50 near Cameron Park 372 Comment
  UCR237558  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2012-7-2 19293 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 2.9 miles west of its junction with CA-88 2271 Comment
  UCR241742  Poa George K. Helmkamp, E. A. Helmkamp 2012-7-6 19368 El Dorado Northern Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50 2078 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
  UCR242759  Triteleia ixioides subsp. anilina George K. Helmkamp, E. A. Helmkamp 2011-5-24 17370 El Dorado Northern Sierra Nevada Mountains Foothills, Mesquite Road, 7.5 miles south of its junction with Wentworth Springs Road 1073 Comment
  UCR242799  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2010-9-1 16901 El Dorado Northern Sierra Nevada Mountains, Mehrten Springs Road, 0.6 mile north of its junction wtih CA-88 2018 Comment
  UCR242838  Aster occidentalis var. occidentalis 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 wtih CA-88 2018 Comment
  UCR246690  Pseudotsuga menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2007-9-26 13017 El Dorado Northern Sierra Nevada Mountains Foothills, Bonetti Road, 1.1 miles south of its junction with Mormon Emigrant Trail, just east of Jenkinson Lake 1189 Comment
  UCR248396  Madia gracilis George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22024 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 7.4 miles east of the junction with Volcanoville Road 1320 Comment
  UCR248521  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Elizabeth Helmkamp 2013-7-22 21095 El Dorado Northern Sierra Nevada Mountains, Hell's Delight Road, just west of the junction with Silver Fork Road, 2.8 miles north of CA-88 2006 Comment
  UCR248537  Elymus George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21037 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 0.1 mile west of the junction with Capps Crossing Road, 6.3 km SE (127 deg. ) of Pollock Pines, just east of Jenkinson Lake 1221 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
  UCR248674  Cirsium vulgare George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22042 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
  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
  UCR249620  Kelloggia galioides George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20848 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz 1364 Comment
  UCR249872  Bromus suksdorfii George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20906 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail at the junction with Pilliken Road 1825 Comment
  UCR249878  Monardella odoratissima George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20914 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, north side of its junction with Mormon Emigrant Trail 2188 Comment
  UCR249991  Allium campanulatum George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20920 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, north side of its junction with Mormon Emigrant Trail 2188 Comment
  UCR250067  Aegilops cylindrica George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20884 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
  UCR250075  Lotus incanus George K. Helmkamp, Mary Alice Barnes 2013-5-10 20529 El Dorado Northern Sierra Nevada Mtns. Foothills, Wentworth Springs Road, 3.4 miles east of Georgetown 983 Comment
  UCR250613  Bromus tectorum George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20893 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
  UCR250641  Hypochaeris radicata George K. Helmkamp, Mary Alice Barnes 2013-5-10 20531 El Dorado Northern Sierra Nevada Mtns. Foothills, Wentworth Springs Road, 3.4 miles east of Georgetown 983 Comment
  UCR250693  Carex fracta George K. Helmkamp, Mary Alice Barnes 2013-5-10 20538 El Dorado Northern Sierra Nevada Mtns. Foothills, Volcanoville Road near junction with Rubicon Rd., 1.8 miles northwest of Wentworth Springs Road, NE of Georgetown 1044 Comment
  UCR251252  Eriophyllum lanatum var. croceum George K. Helmkamp, E. A. Helmkamp 2012-7-6 19331 El Dorado Northern Sierra Nevada Mountains, Ice House Road at Ice House village, 10.5 miles north of its junction with US-50 1677 Comment
  UCR251258  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2012-7-6 19336 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
  UCR251264  Trifolium repens George K. Helmkamp, E. A. Helmkamp 2012-7-6 19355 El Dorado Northern Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50 2078 Comment
  UCR251269  Navarretia divaricata subsp. divaricata George K. Helmkamp, E. A. Helmkamp 2012-7-6 19348 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
  UCR251271  Cryptantha torreyana George K. Helmkamp, E. A. Helmkamp 2012-7-6 19337 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
  UCR251281  Madia minima George K. Helmkamp, E. A. Helmkamp 2012-7-6 19325 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 0.2 mile north of Ice House community, 10.7 miles north of US-50 1683 Comment
  UCR253105  Potentilla glandulosa subsp. reflexa George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22060 El Dorado Northern Sierra Nevada Mountains, junction of Ice House Road and Forestry Route 13N21, 0.9 mile south of the northern junction of Ice House Road and Wentworth Springs Road 1701 Comment
  UCR253114  Penstemon roezlii George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22053 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
  UCR253119  Gayophytum heterozygum George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22069 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
  UCR253220  Layia platyglossa George K. Helmkamp 2014-4-28 22830 El Dorado Sierra Nevada Mountains Foothills, Pleasant Valley Road at Gold Oak Union School, 0.3 mile west of Moon Lake Dr. 787 Comment
  UCR253242  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2013-11-29 22498 El Dorado Sierra Nevada Mountains Foothills, about 1 mile south of Lotus along Lotus Road, 0.1 mile south of the junction with Granite Creek Rd 238 Comment
  UCR256827  Senecio George K. Helmkamp, Amy Barnes 2014-5-14 22874 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 0.1 mile east of Pebble Canyon Drive, 6.25 air mi. SW (217 deg. ) of Kyburz 1832 Comment
  UCR257170  Cyperus eragrostis George K. Helmkamp, Elizabeth Helmkamp 2013-10-12 22409 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 1.1 miles southeast of its junction with Hwy E-16, 0.97 air mi NE (63 deg. ) of Somerset 581 Comment
  UCR257197  Rumex crispus George K. Helmkamp, Mary Alice Barnes 2013-5-13 20553 El Dorado Sierra Nevada Mountains Foothills, along E-16 (Mt. Aukum Rd.), 3.3 miles north of the Amador County line, near D'Agostini Reservoir 569 Comment
  UCR257669  Allium campanulatum George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19570 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 1.4 miles west of its junction with CA-88 2287 Comment
  UCR257671  Carex multicostata George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19568 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 1.4 miles west of its junction with CA-88 2287 Comment
  UCR257681  Juncus xiphioides George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19574 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 1.4 miles west of its junction with CA-88 2287 Comment
  UCR257698  Aster eatonii George K. Helmkamp, Amy Barnes 2012-8-19 19659 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
  UCR257706  Cornus nuttallii George K. Helmkamp, Mary Alice Barnes 2013-4-30 20440 El Dorado Sierra Nevada Mountains, Mormon Emigrant Trail, 70 meters northwest of its junction with Park Creek Road, 1 mile NW of Bryants 1311 Comment
  UCR257712  Geranium dissectum George K. Helmkamp, Elizabeth Helmkamp 2013-5-2 20446 El Dorado Sierra Nevada Mountains Foothills, Camp Creek along Happy Valley Cutoff Road, 0.6 mile east of junction with Mt. Aukum Road, 1.35 air miles NE (62 deg. ) of Somerset 566 Comment
  UCR257774  Juncus bufonius var. bufonius George K. Helmkamp, Amy Barnes 2012-8-19 19682 El Dorado Northern Sierra Nevada Mountains, unnamed dirt road along Ice House Road, 0.4 mile south of Robbs Peak Road, N of Union Valley Reservoir 1756 Comment
  UCR257779  Mimulus moschatus George K. Helmkamp, Amy Barnes 2012-8-19 19676 El Dorado Northern Sierra Nevada Mountains, unnamed dirt road along Ice House Road, 0.4 mile south of Robbs Peak Road, N of Union Valley Reservoir 1756 Comment
  UCR257789  Gnaphalium palustre George K. Helmkamp, Amy Barnes 2012-8-19 19673 El Dorado Northern Sierra Nevada Mountains, unnamed dirt road along Ice House Road, 0.4 mile south of Robbs Peak Road, N of Union Valley Reservoir 1756 Comment
  UCR257925  Penstemon roezlii George K. Helmkamp, Amy Barnes 2014-7-28 22959 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 1.6 miles west of Ice House Road 1863 Comment
  UCR258114  Agrostis George K. Helmkamp, Amy Barnes 2014-8-11 23017 El Dorado Northern Sierra Nevada Mountains, north of Union Valley Reservoir, junction of Robbs Peak Road and Ice House Road 1655 Comment
  UCR258119  Platanthera leucostachys George K. Helmkamp, Amy Barnes 2014-8-11 23009 El Dorado Northern Sierra Nevada Mountains, north of Union Valley Reservoir, junction of Robbs Peak Road and Ice House Road 1655 Comment
  UCR258199  Lupinus latifolius var. columbianus George K. Helmkamp, Amy Barnes 2014-8-11 22994 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258232  Carex multicaulis George K. Helmkamp, Mary Alice Barnes 2013-4-30 20422 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 0.1 mile south of its junction with Mormon Emigrant Trail 1261 Comment
  UCR258384  Lupinus microcarpus var. densiflorus George K. Helmkamp 2014-5-21 22915 El Dorado Sierra Nevada Mountain Foothills, Bucks Bar Road, 0.8 mile northwest of the bridge over North Fork Cosumnes River 605 Comment
  UCR258389  Hieracium albiflorum George K. Helmkamp, Amy Barnes 2014-8-11 23002 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258531  Fragaria vesca George K. Helmkamp, Mary Alice Barnes 2013-4-30 20432 El Dorado Northern Sierra Nevada Mountains, Capps Crossing/Bonnetti Road, 0.2 mile northwest of the bridge over Diamond /Camp Creek 1155 Comment
  UCR258541  Poa secunda var. secunda George K. Helmkamp, Mary Alice Barnes 2013-4-30 20428 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 0.1 mile south of its junction with Mormon Emigrant Trail 1261 Comment
  UCR261998  Hypericum anagalloides George K. Helmkamp, Amy Barnes 2014-10-10 23166 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.6 mile northwest of Luther Pass 2378 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
  UCSB69278  Plagiobothrys nothofulvus Helmkamp, G.; Helmkamp, E. 2007-3-22 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; (Aukum 7.5' Q.: 38d 34'37"N, 120d44'09"W, 1000 m.) 584 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
  UCSB71766  Astragalus bolanderi Helmkamp, G.; Helmkamp, E. 2008-8-30 El Dorado Northern Sierra Nevada Mountains; Leek Spring Valley, Foster Meadow Road 0.9 miles southwest of its junction with Mormon Emigrant Trail (Tragedy Spring 7.5' Q.) 2241 Comment
  UCSB72348  Acer macrophyllum Helmkamp, G.; Helmkamp, E. 2007-3-22 El Dorado Foothills, Northern Sierra Nevada Mountains: Mt. Aukurn Road at the crossing of the middle fork of Cosumnes river, west of jet of Bucks Bar Road 622 Comment
  SBBG128596  Viola sheltonii G. K. Helmkamp, E. A. Helmkamp 2012-5-18 19019 El Dorado Capps Crossing Rd (Bonnetti Rd), 0.1 mi NW of bridge over Diamond Crk, E of Jenkinson Lake and S of US Hwy 50 1186 Comment
  SBBG128600  Lupinus nanus G. K. Helmkamp, E. A. Helmkamp 2012-5-18 19010 El Dorado Mormon Emigrant Trail, 0.1 mi E of Pebble Cyn Rd, SE of Pollock Pines, S of US Hwy 50 1495 Comment
  SBBG128626  Triteleia ixioides subsp. anilina G. K. Helmkamp, E. A. Helmkamp 2012-5-18 19029 El Dorado Sly Park Rd (Hwy E-16) at the Fire Station, 1.3 mi SW of the jct with Mormon Emigrant Trail 1081 Comment
  SBBG128844  Hackelia micrantha G. K. Helmkamp, E. A. Helmkamp 2010-8-7 16717 El Dorado Silver Fork Rd, 0.4 mi E of its jct with Mormon Emigrant Trail, at Jim Quinn Spring 2136 Comment
  SBBG129010  Trientalis latifolia G. K. Helmkamp, E. A. Helmkamp 2012-5-18 19005 El Dorado junction of Bonnetti Rd (Capps Crossing Rd) and Mormon Emigrant Trail, E of Jenkinson Lake 1261 Comment
  SEINET3246210  Erigeron G. K. Helmkamp, E. A. Helmkamp 2008-1 13946 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road, 2.2 miles south of the entrance to Wright's Lake. 2070 Comment
  SEINET4554110 Image available Melica George K. Helmkamp, E. A. Helmkamp 2008-4-30 13360 B El Dorado Sierra Nevada Mountains Foothills: junction of Meadow Brook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UC1923703  Symphyotrichum spathulatum var. spathulatum G. K. Helmkamp, E. A. Helmkamp 2006-7-28 11006 El Dorado Northern Sierra Nevada Mtns: Echo Summit along Hwy US-50; at entrance to the road maintenance station (Echo Lake 7.5' Q.: Near 38 48'48N, 120 01'53W) 2244 Comment
  UCR102077  Phacelia distans George K. Helmkamp, E. A. Helmkamp 1998-5-14 3604 Fresno Inner South Coast Range, Warthan Creek Canyon, near Curry Mtn., c. 6-7 miles (airline) SW of Coalinga, along Calif. Hwy 198, 20.8 mi. west of Interstate 5 366 Comment
  UCR102087  Juniperus californica George K. Helmkamp, E. A. Helmkamp 1998-5-14 3614 Fresno Inner South Coast Range, Warthan Creek Canyon, near Curry Mtn., c. 6-7 miles (airline) SW of Coalinga, along Calif. Hwy 198, 20.8 mi. west of Interstate 5 366 Comment
  UCR102090  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 1998-5-14 3611 Fresno Inner South Coast Range, Warthan Creek Canyon, near Curry Mtn., c. 6-7 miles (airline) SW of Coalinga, along Calif. Hwy 198, 20.8 mi. west of Interstate 5 366 Comment
  SD243080  Eclipta prostrata George K. Helmkamp, E. A. Helmkamp 2011-10-8 18395 Glenn Northern Sacramento Calley: Co. Road 61 (Riz Road), 2.6 miles east of CA-45 and at the junction with C. Road V, 8.26 miles SE (124a^z) of Willows (Princeton 7.5'Q) 25 Comment
  UCR238744  Erodium cicutarium George K. Helmkamp, E. A. Helmkamp 2012-2-9 18539 Glenn Sacramento Valley, Norman Road/ Rd. 68, 0.4 mile west of the Colusa County line, beside the Sacramento National Wildlife Refuge 24 Comment
  RSA697219  Camissonia cheiranthifolia subsp. cheiranthifolia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7021 Humboldt North coast: Samoa Peninsula, 2.6 miles S of CA-255 bridge across Humboldt Bay. 15 Comment
  SD148217  Tanacetum camphoratum G. K. Helmkamp, E. A. Helmkamp 2001-7-8 7012 Humboldt Samoa Peninsula, 2.6 miles south of California 255 bridge across Humboldt Bay. 14 Comment
  SD148260  Torilis arvensis G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6986 Humboldt North coast redwood area; California Highway 36, along the Van Duzen River, 19.6 miles east of U. S. 101. 136 Comment
  UCR121767  Crepis capillaris George K. Helmkamp, E. A. Helmkamp 2001-7-8 6998 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR123955  Cystopteris fragilis George K. Helmkamp, E. A. Helmkamp 2001-7-8 6970 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  UCR123960  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2001-7-8 6986 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
  CLARK-A1045-1203  Dalea mollissima 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-A1045-1214  Astragalus filipes George K. Helmkamp 1977-1-22 Imperial Yuha Desert where Pinto Wash crosses State Highway 98; ; Yuha Basin 7.5'Q Comment
  RSA489124  Cryptantha costata George K. Helmkamp 1988-2-28 s.n. Imperial Sandy flat just N of Signal Mtn., S of Hwy 98. [Mount Signal 10 km cell; PG-1N, 2E] 31 Comment
  RSA489129  Camissonia cardiophylla 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. 152 Comment
  SD143863  Mentzelia longiloba var. longiloba G. K. Helmkamp, E. Helmkamp 1998-1-24 2575 Imperial Between Hwy I-8 & the All-American Canal across from the Brock Research Center (ca. 3 mi. east of the jct of Hwy CA-98 with Hwy I-8). 46 Comment
  SD143922  Euphorbia setiloba G. K. Helmkamp, E. Helmkamp 1998-1-24 2603 Imperial Ogilby Road, 14.2 miles south of the junction with Highway CA-78. 182 Comment
  SD144006  Cryptantha angustifolia G. K. Helmkamp, E. A. Helmkamp 1998-1-24 2586 Imperial 0.2 mi. S of jct. of Ogilby Rd. and Hwy I-8. 46 Comment
  SD144056  Chaenactis carphoclinia var. carphoclinia G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2897 Imperial 4.7 mi. N of Winterhaven on Picacho Rd & 1 mi. NW of the All-American Canal. 75 Comment
  SEINET3084411 Image available Cryptantha holoptera G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2928 Imperial Colorado desert: Imperial Dam area, just S of the dam on Hwy S-24 76 Comment
  SEINET3090254 Image available Euphorbia setiloba George K. Helmkamp, E. Helmkamp 1998-1-24 2603 Imperial Sonoran (Colorado) Desert; Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR100797  Larrea tridentata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2888 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR100846  Aliciella latifolia George K. Helmkamp, E. A. Helmkamp 1998-3-18 2882 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR101117  Aristida adscensionis George K. Helmkamp, E. A. Helmkamp 1998-3-19 2908 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
  UCR103620  Chenopodium murale George K. Helmkamp, E. A. Helmkamp 1998-3-19 2909 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
  UCR103638  Euphorbia setiloba George K. Helmkamp, E. Helmkamp 1998-1-24 2603 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103642  Dalea mollissima George K. Helmkamp, E. Helmkamp 1998-1-28 2615 Imperial Sonoran (Colorado) Desert, Calif. Hwy 78, 2 mi. NE of Glamis 168 Comment
  UCR103648  Encelia frutescens George K. Helmkamp, E. Helmkamp 1998-1-28 2628 Imperial Sonoran (Colorado) Desert, West Mesa. Jeep trail south of Calif. Hwy 98 along the Mexican border, 2.2 mi. west of Mt. Signal Road. 67 Comment
  UCR104849  Ambrosia dumosa George K. Helmkamp, E. Helmkamp 1998-1-23 2562 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR120522  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 2001-3-17 6279 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR120528  Lupinus arizonicus George K. Helmkamp, E. A. Helmkamp 2001-3-17 6293 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120530  Schismus arabicus George K. Helmkamp, E. A. Helmkamp 2001-3-17 6295 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR120743  Perityle emoryi George K. Helmkamp, E. A. Helmkamp 2001-3-17 6288 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR121151  Chenopodium album George K. Helmkamp, E. A. Helmkamp 2001-3-16 6266 Imperial Colorado Desert., Ramer Lake -46 Comment
  UCR50973  Euphorbia pediculifera George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50974  Fagonia laevis George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR59855  Psathyrotes ramosissima George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, 5.2 mi east of State Hwy 78 and 7 mi south of Palo Verde. 'Cibola Nat'l Wildlife Reserve 75 Comment
  CLARK-A1045-38  Eriogonum trichopes George K. Helmkamp 1977-4-24 Inyo Death Valley Comment
  CLARK-A1045-48  Artemisia spinescens George K. Helmkamp 1977-4-23 Inyo Panamint Mountains dry flat south of Emigrant Pass; 1219 Comment
  SD224974  Psorothamnus polydenius G. K. Helmkamp 1997-9-30 2483 Inyo East side of White Mountains. 1707 Comment
  SEINET245325  Agrostis scabra G. K. Helmkamp, E. A. Helmkamp 1998-8-10 4355 Inyo Eastern High Sierra Mountains; Onion Valley, west of Independence. 2804 Comment
  UCR100354  Euphorbia polycarpa George K. Helmkamp 1997-9-30 2490 Inyo White Mountains, [Deep Springs Valley], east side of White Mountains 1585 Comment
  UCR100359  Sphaeralcea ambigua var. rugosa George K. Helmkamp 1997-9-30 2484 Inyo White Mountains, [Deep Springs Valley], east side of White Mountains 1585 Comment
  UCR109503  Abronia turbinata George K. Helmkamp 1973-6-15 s.n. Inyo Owens Valley, Owens River at Pleasant Valley, near Mono county line 1372 Comment
  UCR121929  Carex heteroneura var. heteroneura George K. Helmkamp, E. A. Helmkamp 2000-7-19 5931 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121935  Carex microptera George K. Helmkamp, E. A. Helmkamp 2000-7-19 5927 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
  UCR123407  Phacelia hastata var. hastata George K. Helmkamp, E. A. Helmkamp 1998-8-12 4388 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR123411  Antennaria corymbosa George K. Helmkamp, E. A. Helmkamp 1998-8-12 4395 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR134503  Senecio serra var. serra George K. Helmkamp, E. A. Helmkamp 1998-8-12 4360 Inyo Sierra Nevada Mountains, Onion Valley, west of Independence, Inyo National Forest 2805 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
  UCR134712  Rumex salicifolius George K. Helmkamp, E. A. Helmkamp 1998-8-10 4281 Inyo Eastern Sierra Nevada Mountains, along Big Pine Creek 12 mi west of Big Pine along Glacier Lodge Rd. 2317 Comment
  UCR13879  Mimulus nanus var. mephiticus George K. Helmkamp 1973-6-13 s.n. Inyo Owens Valley, Owens River near Pleasant Valley 1372 Comment
  UCR14522  Nama aretioides George K. Helmkamp 1974-5-4 s.n. Inyo Owens Valley, Pleasant Valley along the Owens River, 9 mi NW of Bishop 1311 Comment
  UCR177007  Pedicularis attollens George K. Helmkamp, E. A. Helmkamp 1998-8-12 4371 A Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR80827  Nitrophila occidentalis George K. Helmkamp 1993-6-16 1- 22 Inyo Owens Valley, 2 mi south of Pleasant Valley campground beside the Owens River 1280 Comment
  UCR80828  Eriogonum pusillum George K. Helmkamp 1993-6-16 s.n. Inyo Owens Valley, 2 mi south of Pleasant Valley campground beside the Owens River 1280 Comment
  UCR90212  Lupinus concinnus George K. Helmkamp 1995-3-26 s.n. Inyo Northern Mojave Desert, at turnoff from Death Valley Road to Ubehebe Crater 600 Comment
  UCR95927  Linanthus pachyphyllus George K. Helmkamp 1996-9-29 1247 Inyo Mosquito Flats, [3.9 mi] south of Rock Creek Lake (S of Tom's Place) 3140 Comment
  UCR96051  Lupinus pratensis var. pratensis George K. Helmkamp 1996-9-29 1248 Inyo Mosquito Flats, [3.9 mi] south of Rock Creek Lake (S of Tom's Place) 3140 Comment
  UCR99901  Oenothera cespitosa subsp. marginata George K. Helmkamp 1997-9-30 2454 Inyo White Mtns., About 8 mi. east of US Hwy 395 on Calif. Hwy 168 out of Big Pine 2104 Comment
  UCR99905  Lepidium latifolium George K. Helmkamp 1997-9-29 2427 Inyo Sierra Nevada Mtns, Onion Valley, west of Independence 2805 Comment
  UCR99909  Orobanche corymbosa George K. Helmkamp 1997-9-30 2459 Inyo White Mtns., About 8 mi. east of US Hwy 395 on Calif. Hwy 168 out of Big Pine 2104 Comment
  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
  CLARK-A1045-1  Eriophyllum ambiguum George K. Helmkamp 1977-4-22 Inyo north of Trona; Creosote Bush scrub; Trona 15'Q Comment
  UCSB37800  Tiquilia nuttallii Helmkamp, G. 1973-6-15 Inyo Owens River in Pleasant Valley Comment
Read comments
Oct 27 2014
  CAS-BOT-BC405343  Stellaria pallida G. K. Helmkamp; E. A. Helmkamp 1997-9-7 1389 Kern San Emidgio Ranch, SE portion. 1494 Comment
  CLARK-A1045-982  Lotus purshianus George K. Helmkamp 1977-6-11 Kern Weldon Weldon 7.5'Q Comment
  RSA613932  Astragalus lentiginosus var. nigricalycis George K. Helmkamp, E. A. Helmkamp 1998-4-7 3187 Kern 3 mi. north of Maricopa on Calif. Hwy 33. 252 Comment
  RSA614974  Phacelia tanacetifolia George K. Helmkamp, E. A. Helmkamp 1998-4-8 3250 Kern 2.3 mi. NE of Cerro Noroeste Rd along CA hwy 33, SW of Maricopa. 793 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
  RSA667121  Lupinus excubitus var. austromontanus George K. Helmkamp, E. A. Helmkamp 2001-4-26 6479 Kern Tehachapi Mountains; Tehachapi Willow Springs Rd at Oak Crk Pass. 1463 Comment
  SD143896  Lupinus bicolor G. K. Helmkamp, E. A. Helmkamp 1998-4-9 3269 Kern Foothills of the Tehachapi Mountains, east of Arvin along CA Hwy 223, grazing land 305 Comment
  SD144008  Amsinckia eastwoodiae G. K. Helmkamp, E. A. Helmkamp 1998-4-9 3265 Kern Foothills of the Tehachapi Mtns. E of Arvin along Ca Hwy 223. 305 Comment
  SD148105  Camissonia strigulosa G. K. Helmkamp, E. A. Helmkamp 2001-4-27 6522 Kern Tehachapi Mountains; CA-223, 7.2 miles east of Arvin. 366 Comment
  SD148128  Salvia columbariae G. K. Helmkamp, E. A> Helmkamp 2001-4-27 6510 Kern Tehachapi Mts., Flat turnoff fro CA 58 883 Comment
  SD148151  Trifolium willdenovii G. K. helmkamp, E. A. Helmkamp 2001-4-27 6506 Kern Tehachapi Mountains, Hart Flat turnoff from CA-58, on mounds of soil deposited at roadside 883 Comment
  SEINET235063  Camissonia campestris subsp. campestris G. K. Helmkamp, E. A. Helmkamp 1998-5-13 3553 Kern Greenhorn Mtns. Southern Sierra Nevada: 6.5 mi. SW of Woody along Bakersfield/Glennville Rd (NE of Bakersfield). Near H 396 Comment
  SEINET235067  Plagiobothrys canescens G. K. Helmkamp, E. A. Helmkamp 1998-5-13 3534 Kern Greenhorn Mtns Southern Sierra Nevada : 6.5 mi. SW of Woody along Bakersfield/Glennville Rd (NE of Bakersfield). Near H 396 Comment
  UCD105459  Astragalus trichopodus var. phoxus G. K. Helmkamp; E. A. Helmkamp 2001-4-27 6523 Kern Tehachapi Mountains. West foothills. CA-223, 7.2 miles E of Arvin. 366 Comment
  UCD120088  Cryptantha G. K. Helmkamp; E. A. Helmkamp 2001-5-2 6646 Kern Temblor Range, Calif. Hwy 58, very near the San Luis Obispo Co. line. 427 Comment
  UCD120855  Plagiobothrys leptocladus G. K. Helmkamp; E. A. Helmkamp 2001-4-27 6540 Kern Central CA Valley: Enos Lane Rd., 1.9 mi S of CA-119 (NE of Taft). 61 Comment
  UCD133704  Lasthenia fremontii G. K. Helmkamp; E. A. Helmkamp 2001-4-27 6541 Kern Central CA Valley: Enos Lane Rd., 1.9 mi S of CA-119 (NE of Taft). 61 Comment
  UCR100930  Spergularia rubra George K. Helmkamp, E. A. Helmkamp 1998-4-9 3259 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
  UCR100940  Erodium cicutarium George K. Helmkamp, E. A. Helmkamp 1998-4-8 3200 Kern SW of Maricopa 1.7 mi NW of Calif. hwy 33 on Elkhorn Grade Rd. 396 Comment
  UCR102502  Lotus humistratus George K. Helmkamp, E. A. Helmkamp 1998-4-9 3278 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR102508  Astragalus oxyphysus George K. Helmkamp, E. A. Helmkamp 1998-4-9 3268 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR102510  Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 1998-4-9 3270 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR116016  Lupinus excubitus var. austromontanus George K. Helmkamp, E. A. Helmkamp 1997-3-6 1367 Kern Tehachapi Mtns./San Joaquin Valley, [Edmonston] Pumping plant road c. 5 mi. east of Grapevine near Pastoria Creek 399 Comment
  UCR121716  Quercus john-tuckeri George K. Helmkamp, E. A. Helmkamp 2001-4-26 6499 Kern Tehachapi Mountains., Sand Canyon Road, 8.7 mi north of Calif. Hwy 58 1494 Comment
  UCR122484  Pholistoma membranaceum George K. Helmkamp, E. A. Helmkamp 2001-5-2 6643 Kern Temblor Range, [dirt road 0.45 km south of] Calif. Hwy 58, very near the San Luis Obispo Co. line 427 Comment
  UCR122558  Lepidium dictyotum var. acutidens George K. Helmkamp, E. A. Helmkamp 2001-4-27 6539 Kern San Joaquin Valley, Enos Lane Rd., 1.9 mi south of Calif. Hwy 119, NE of Taft 61 Comment
  UCR122885  Linanthus parviflorus George K. Helmkamp, E. A. Helmkamp 2001-5-2 6656 Kern Temblor Range, [dirt road 0.45 km south of] Calif. Hwy 58, very near the San Luis Obispo Co. line 427 Comment
  UCR122896  Amsinckia tessellata George K. Helmkamp, E. A. Helmkamp 2001-5-2 6651 Kern Temblor Range, [dirt road 0.45 km south of] Calif. Hwy 58, very near the San Luis Obispo Co. line 427 Comment
  UCR130227  Amsinckia eastwoodiae George K. Helmkamp, E. A. Helmkamp 2001-4-27 6530 Kern Tehachapi Mtns., Western Foothills, Calif. Hwy 223 (Bear Mtn. Blvd.), 7.2 mi east of Arvin 366 Comment
  UCR130231  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2001-4-27 6534 Kern Tehachapi Mtns., Western Foothills, Calif. Hwy 223 (Bear Mtn. Blvd.), 7.2 mi east of Arvin 366 Comment
  UCR130241  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2001-4-27 6524 Kern Tehachapi Mtns., Western Foothills, Calif. Hwy 223 (Bear Mtn. Blvd.), 7.2 mi east of Arvin 366 Comment
  UCR130253  Amsinckia tessellata var. tessellata George K. Helmkamp, E. A. Helmkamp 2001-4-27 6508 Kern Tehachapi Mtns, Hart Flat turnoff from Calif. Hwy 58 884 Comment
  UCR157794  Clarkia cylindrica subsp. clavicarpa George K. Helmkamp, E. A. Helmkamp 1998-6-29 4141 A Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 Comment
  UCR157799  Cryptantha simulans George K. Helmkamp, E. A. Helmkamp 1998-6-29 4156 Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 Comment
  UCR157820  Allophyllum gilioides George K. Helmkamp, E. A. Helmkamp 1998-6-29 4157 Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 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
  UCR24975  Lepidium appelianum George K. Helmkamp 1981-8-6 s.n. Kern Pinon Pines Camp near Mt. Pinos. [Lake of the Woods] Near the junction of Cuddy Valley Rd. and Lockwood Valley Rd 1677 Comment
  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
  UCR27489  Artemisia dracunculus George K. Helmkamp 1982-9-17 s.n. Kern 6.8 mi above the snow gate on the road to the Mt. Pinos summit 2287 Comment
  UCR97510  Astragalus lentiginosus George K. Helmkamp, E. A. Helmkamp 1997-3-7 1372 Kern SE of Maricopa along Western Minerals Rd near Bitter Creek 427 Comment
  VVC911  Gilia malior G. K. Helmkamp 1998-4-9 3286 Kern Mojave Desert, W end of city of Mojave, along Airport Blvd. 808 Comment
  RSA518445  Eriogonum microtheca var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  RSA519137  Juniperus occidentalis var. occidentalis George K. Helmkamp 1990-9-23 D- 6 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  SBBG95823  Madia elegans G. K. Helmkamp 1990-10-4 M- 9 Lassen S of Susanville, N of Milford Pass, Plumas Nat Forest 1463 Comment
  UCR67383  Eriogonum microthecum var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CDA7446  Cnicus benedictus G. K. Helmkamp, E. A. Helmkamp 1998-5-21 4049 Los Angeles Western Mojave Desert; Junction of Munz Ranch Road and Lake Elizabeth Road north of Lake Elizabeth. Comment
  SD178186  Cryptantha intermedia G. K. Helmkamp, E. A. Helmkamp 1998-5-21 4045 Los Angeles Western Mojave Desert: junction of Munz Ranch Rd. and Lake Elizabeth Rd. north of Lake Elizabeth. 1006 Comment
  SEINET2042543 Image available Linanthus parryae George K. Helmkamp, E. A. Helmkamp 2001-5-2 6660 Los Angeles Antelope Valley, 0.1 mi W of CA-138 on Ave. W, then 0.3 mi S on dirt road. 976 Comment
  SEINET3440246 Image available Lupinus excubitus G. Helmkamp 1997-3-6 1353 Los Angeles Western Mojave Desert west of Lancaster, along Lancaster Rd, just S of California Poppy Preserve. 793 Comment
  UCR14466  Dodecatheon redolens George K. Helmkamp 1974-6-2 s.n. Los Angeles San Gabriel Mtns, near summit of Calif. Hwy 39 2012 Comment
Read comments
Nov 29 2010
  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
  UCR26759  Lupinus microcarpus George K. Helmkamp 1982-5-14 s.n. Los Angeles Western Mojave Desert, Calif. Hwy 138, [near Neenach School, Antelope Valley] 2.5 mi. east of Osos Pumping Station turnoff 915 Comment
  RSA710037  Gilia capitata subsp. abrotanifolia George K. Helmkamp, E. A. Helmkamp 2002-4-23 7531 A Madera Western Sierra Nevada foothills: 2.5 mi N of Oakhurst along CA-41Mt St. Helena 762 Comment
  UCR122406  Eriodictyon californicum George K. Helmkamp, E. A. Helmkamp 2002-4-24 7532 Madera Western Sierra Nevada foothills, Auberry Rd (Rd 200/North Fork Rd.) 5.0 mi south of North Fork 503 Comment
  UCR122635  Nemophila maculata George K. Helmkamp, E. A. Helmkamp 2002-4-23 7508 Madera Western Sierra Nevada foothills, Bass Lake Road, 2.2 miles southeast of the junction with CA Hwy 41 976 Comment
  CLARK-A1045-1217  Calycanthus occidentalis George K. Helmkamp 1977-8-3 Mariposa Yosemite National Park at the diversion dam; rocky river bank; ; El Capitan 7.5'Q 1158 Comment
  CLARK-A1045-1218  Agastache urticifolia George K. Helmkamp 1977-8-4 Mariposa Sierra National Forest at Fish Camp; growing on a steep bank of loose granite; ; Fish Camp 7.5'Q 1676 Comment
  CLARK-A1045-1400  Carex scopulorum George K. Helmkamp 1977-8-5 Mariposa Sierra Nevada Porcupine Flats Campground; Yosemite Falls 7.5'Q Comment
  CLARK-A1045-1411  Senecio triangularis George K. Helmkamp 1977-8-5 Mariposa Sierra Nevada Porcupine Flats Campground; meadow; ; Yosemite Falls 7.5'Q 2590 Comment
  CLARK-A1045-1440  Eriophyllum lanatum var. monoense George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada 1.8 miles east of Yosemite Creek along road to Porcupine Flat; on ledge; Yosemite Falls 7.5'Q Comment
  UCR166143  Mimulus floribundus George K. Helmkamp, E. A. Helmkamp 1995-6-21 95-5- 11 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
  RSA613707  Clarkia amoena subsp. amoena George K. Helmkamp, E. A. Helmkamp 1997-6-25 2101 Mendocino State Highway 128 about 5 miles NW of Cloverdale 427 Comment
  RSA614556  Prunella vulgaris var. lanceolata George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-25 2121 Mendocino Anderson Valley, CA Hwy 128, NW of Boonville. 91 Comment
  RSA614892  Adiantum jordanii George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-25 2103 Mendocino State Hwy 128, ca 5 mi N of Cloverdale. 427 Comment
  SEINET273098  Alnus rubra G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1997-6-26 2171 Mendocino Glass Beach, Fort Bragg ;North Coast 6 Comment
  UCR101671  Rumex acetosella George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2205 Mendocino North Coast, two miles north of Westport between US-1 and the coast 30 Comment
  UCR102550  Stellaria media George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2107 Mendocino State Hwy 128, 1.5 mi. SE of Boonville, in Anderson Valley 152 Comment
  UCR104825  Pteridium aquilinum George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2132 Mendocino North Coast Range, Anderson Valley, Calif. Hwy 128, NW of Boonville 91 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
  UCR106454  Prunella vulgaris var. lanceolata George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2154 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR106459  Lathyrus latifolius George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2159 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR121381  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2000-6-19 5767 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR122207  Senecio aronicoides George K. Helmkamp, E. A. Helmkamp 2000-6-18 5796 Mendocino North Coast Range, 9.2 mi east of CA Hwy 1 on CA Hwy 20, southeast 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
  UCR131841  Pteridium aquilinum var. pubescens George K. Helmkamp, E. A. Helmkamp 2000-6-18 5750 Mendocino North Coast, Glass Beach at Fort Bragg 9 Comment
  UCR131853  Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2000-6-18 5731 Mendocino North Coast, Glass Beach at Fort Bragg 9 Comment
  UCR132136  Hesperolinon spergulinum George K. Helmkamp, E. A. Helmkamp 2000-6-18 5704 Mendocino Outer North Coast Ranges., 18.7 mi NW of US-1 (Cloverdale) along Calif. Hwy 128 274 Comment
  UCR67029  Bidens cernua George K. Helmkamp 1990-9-23 J- 7 Modoc Warner Mtns, Goose Lake, within 0.1 mi of the Oregon border 1476 Comment
  UCR87535  Draba verna George K. Helmkamp, E. A. Helmkamp 1993-5-4 s.n. Modoc 35.6 miles NW of Canby along Calif. Hwy 139 1280 Comment
  CAS-BOT-BC413284  Oxytheca dendroidea subsp. dendroidea G. K. Helmkamp 1996-10-17 1256 Mono 0.2 mi south of Benton Hot Springs beside highway CA-120 1828 Comment
  CAS-BOT-BC42871  Ambrosia acanthicarpa G. Helmkamp; E. A. Helmkamp 1997-9-12 2415 Mono River Springs Lakes, 3.1 mi. NE of highway CA-120 on River Springs Road 1996 Comment
  CLARK-A1045-1030  Agoseris aurantiaca George K. Helmkamp 1977-7-3 Mono Sierra Nevada Tioga Pass 7.5'Q Comment
  CLARK-A1045-1070  Gayophytum nuttallii George K. Helmkamp 1978-5-29 Mono East Walker River CA State Highway 182 along River below Bridgeport Lake, five miles south of Nevada State Line; ; Sweetwater Creek 7.5'Q 1828 Comment
  CLARK-A1045-1081  Oxytheca luteola George K. Helmkamp 1979-6-12 Mono Owens River drying alkaline flat near River, 4.5 miles south of Arcularius Ranch; ; Whitmore Hot Springs 7.5' Q 2133 Comment
  CLARK-A1045-1104  Arenaria obtusiloba George K. Helmkamp 1977-7-3 Mono Sierra Nevada Tioga Pass 7.5'Q Comment
  CLARK-A1045-1225  Allium atrorubens George K. Helmkamp 1978-5-28 Mono Lower Rock Creek along creek near old State Highway 395, between Bishop and Crowley; ; Casa Diablo Mountain 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-A1045-1232  Phacelia bicolor George K. Helmkamp 1978-5-14 Mono Owens River Sherwin Grade [north of Paradise Camp] ; Rovana 7.5'Q 1676 Comment
  CLARK-A1045-1243  Phyllodoce breweri George K. Helmkamp 1977-7-3 Mono Sierra Nevada Tioga Pass grade, rocky slope; ; Tioga Pass 7.5'Q 2590 Comment
  RSA614906  Senecio triangularis George K. Helmkamp, E. A. Helmkamp 1997-9-8 2252 Mono South side of Lake Mary, South of Mammoth Lakes. 2744 Comment
  SBBG94916  Erigeron breweri G. K. Helmkamp 1989-7-31 Mono just S of Mammoth Village and at the edge of Snow Crk 2438 Comment
  SD148231  Dieteria canescens var. canescens G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6823 Mono Virginia Lakes Road, 2.4 miles from U. S. 395. 2683 Comment
Read comments
Nov 9 2020
  SD232588  Potamogeton nodosus George Helmkamp 1996-9-28 1241 Mono Hot Creek at Owens River Road. 2133 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
  UCR102577  Agoseris monticola George K. Helmkamp, E. A. Helmkamp 1997-9-11 2353 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR103833  Carex hoodii George K. Helmkamp, E. A. Helmkamp 1997-9-11 2364 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR114351  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2000-7-17 5808 Mono Sierra Nevada Mountains, South Twin Lake along Lake Mary Road, 3 miles SW of Mammoth Lakes 2561 Comment
  UCR114372  Agrostis idahoensis George K. Helmkamp, E. A. Helmkamp 1997-9-8 2273 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR114378  Leucanthemum vulgare George K. Helmkamp, E. A. Helmkamp 2000-7-17 5831 Mono Sierra Nevada Mountains, South Twin Lake along Lake Mary Road, 3 miles SW of Mammoth Lakes 2561 Comment
  UCR114382  Perideridia parishii subsp. latifolia George K. Helmkamp, E. A. Helmkamp 1997-9-8 2253 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR114388  Carex whitneyi George K. Helmkamp, E. A. Helmkamp 2000-7-17 5830 Mono Sierra Nevada Mountains, South Twin Lake along Lake Mary Road, 3 miles SW of Mammoth Lakes 2561 Comment
  UCR115821  Machaeranthera canescens subsp. canescens George K. Helmkamp, E. A. Helmkamp 2000-7-18 5866 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
  UCR115837  Lupinus polyphyllus var. burkei George K. Helmkamp, E. A. Helmkamp 2000-7-18 5887 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
  UCR115847  Trifolium monanthum subsp. monanthum George K. Helmkamp, E. A. Helmkamp 2000-7-18 5852 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
  UCR121756  Eriogonum gracilipes George K. Helmkamp, E. A. Helmkamp 1998-8-11 4317 Mono White Mountains, White Mountain Road west of the turnoff to Patriarch Bristlecone Pine Grove 3445 Comment
  UCR122325  Eriogonum spergulinum var. reddingianum George K. Helmkamp, E. A. Helmkamp 1997-9-10 2320 Mono Eastern Sierra Nevada Mtns./ Mono Basin, 4.9 mi. SE of Calif. Hwy 120 on Sagehen Meadows Road 2591 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
  UCR122344  Juncus macrandrus George K. Helmkamp, Elizabeth Helmkamp 2000-7-19 5898 Mono Sierra Nevada Mountains, Rock Creek Lake Rd., 1.1 mi north of the Inyo County line 2896 Comment
  UCR122349  Lilium kelleyanum George K. Helmkamp, Elizabeth Helmkamp 2000-7-19 5893 Mono Sierra Nevada Mountains., West side of Lake Mary, southwest of Mammoth Lakes 2652 Comment
  UCR123127  Carex filifolia var. erostrata George K. Helmkamp, E. A. Helmkamp 1998-8-13 4420 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR123131  Phacelia hastata var. compacta George K. Helmkamp, E. A. Helmkamp 1998-8-13 4410 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR129541  Crepis acuminata George K. Helmkamp, E. A. Helmkamp 2001-7-8 6829 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR129553  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2001-7-8 6821 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR13875  Lupinus lepidus var. confertus George K. Helmkamp 1973-6-14 s.n. Mono Owens Valley, Owens River at Benton Crossing, just north of Crowley Lake 2134 Comment
  UCR140986  Senecio George K. Helmkamp, E. A. Helmkamp 1998-8-11 4312 B Mono White Mountains, White Mountain Road west of the turnoff to Patriarch Bristlecone Pine Grove 3445 Comment
  UCR14381  Penstemon floridus George K. Helmkamp 1974-7-27 s.n. Mono Along U.S. 395 at Lake Crowley. 2079 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
  UCR15404  Draba albertina 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
  UCR15570  Astragalus gibbsii George K. Helmkamp 1978-5-29 s.n. Mono Along East Walker River, c. 5 mi south of Nevada border 1930 Comment
  UCR15953  Cryptantha circumscissa George K. Helmkamp 1979-6-12 s.n. Mono Owens Valley, Owens River, at the Arcularius Ranch 2134 Comment
  UCR257853  Aquilegia formosa George K. Helmkamp, Amy Barnes 2014-8-27 23058 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 4.7 miles west of the junction with CA-395 2040 Comment
  UCR257893  Chenopodium berlandieri George K. Helmkamp, Amy Barnes 2014-8-27 23053 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 0.6 mile south of the junction with Big Springs Road 2360 Comment
  UCR257934  Eriogonum baileyi var. baileyi George K. Helmkamp, Amy Barnes 2014-8-27 23045 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 0.6 mile south of the junction with Big Springs Road 2360 Comment
  UCR40583  Oenothera elata George K. Helmkamp 1985-8-22 885- 37 Mono Sierra Nevada Mtns., Mammoth Village 2439 Comment
  UCR40584  Lepidium virginicum George K. Helmkamp 1985-8-22 885- 3 Mono Sierra Nevada Mtns., Mammoth Village 2439 Comment
  UCR40969  Ericameria bloomeri George K. Helmkamp 1985-8-20 885 20 Mono Owens Valley, along the Owens River, at Big Springs Campground, 7 air miles NE of Mammoth Lakes, above Arcularius Ranch 2195 Comment
  UCR51449  Sagina saginoides var. hesperia George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Big Spring, beside Owens River 2256 Comment
  UCR59785  Trifolium wormskioldii George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  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
  UCR59982  Hordeum brachyantherum subsp. californicum George K. Helmkamp 1988-9-8 s.n. Mono Eastern Sierra Nevada Mtns., Hwy 395, at Deadman's Pass 2451 Comment
  UCR60021  Amaranthus albus George K. Helmkamp 1988-9-8 s.n. Mono Clearwater Creek Road (to Bodie), 2.2 mi. east of Hwy 395 2256 Comment
  UCR67021  Cryptantha affinis George K. Helmkamp 1990-8-2 s.n. Mono Sierra Nevada Mtns, between Mammoth and Lake Mary 2591 Comment
  UCR67376  Lupinus lepidus var. lobbii George K. Helmkamp 1990-8-3 s.n. Mono Sierra Nevada Mountains, Midway gondola stop up Mammoth Mountain 2927 Comment
  UCR67377  Gayophytum nuttallii George K. Helmkamp 1990-8-3 s.n. Mono Sierra Nevada Mountains, Midway gondola stop up Mammoth Mountain 2927 Comment
  UCR67384  Ipomopsis aggregata George K. Helmkamp 1990-8-2 s.n. Mono Sierra Nevada Mtns, between Mammoth and Lake Mary 2591 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
  UCR82193  Sphenosciadium capitellatum George K. Helmkamp 1994-7-28 103- 4 Mono Eastern Sierra Nevada Mtns., Long Valley, Crowley Lake Road at Whiskey Creek, 3 miles east of Tom's Place 2119 Comment
  UCR82194  Aquilegia formosa George K. Helmkamp 1994-7-28 103- 12 Mono Eastern Sierra Nevada Mtns., Long Valley, Crowley Lake Road at Whiskey Creek, 3 miles east of Tom's Place 2119 Comment
  UCR89420  Horkeliella congdonis George K. Helmkamp 1994-7-28 103- 9 Mono Eastern Sierra Nevada Mtns., Long Valley, Crowley Lake Road at Whiskey Creek, 3 miles east of Tom's Place 2119 Comment
  UCR95901  Eriogonum brachypodum George K. Helmkamp 1996-10-17 1255 Mono 1.2 mi NNE of Benton Hot Springs, beside Calif. Hwy 120 1799 Comment
  UCR95905  Eriastrum wilcoxii George K. Helmkamp 1996-10-17 1259 Mono Owens Valley, 0.2 mi. south of Benton Hot Springs, beside Calif. Hwy 120 1745 Comment
  UCR95909  Eriogonum nummulare George K. Helmkamp 1996-10-17 1257 Mono Owens Valley, 0.2 mi. south of Benton Hot Springs, beside Calif. Hwy 120 1745 Comment
  RSA0010990  Astragalus monoensis George K. Helmkamp 1988-9-7 s.n. Mono Hwy 395, 29 mi. N of Inyo Co. line. 2195 Comment
  RSA511557  Eriogonum spergulinum var. reddingianum George K. Helmkamp 1988-9-7 s.n. Mono Hwy 395, 29 mi. N of Inyo Co. line. 2195 Comment
  RSA519147  Senecio triangularis George K. Helmkamp 1990-8-2 s.n. Mono Between Mammoth and Lake Mary. 2591 Comment
  UC2015610  Hieracium albiflorum G. Helmkamp 1995-9-21 1 -1 Mono Lake Mary Comment
  UC2015690  Carex jonesii G. Helmkamp 1995-9-21 1 -13 Mono south edge of Lake Mary. 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
  UCR101784  Carduus tenuiflorus George K. Helmkamp, E. A. Helmkamp 1998-5-14 3660 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  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
  UCR103959  Holocarpha heermannii George K. Helmkamp, E. A. Helmkamp 1997-6-23 2097 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
  UCR107271  Ranunculus hebecarpus George K. Helmkamp, E. A. Helmkamp 1998-5-14 3667 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR107281  Pholistoma membranaceum George K. Helmkamp, E. A. Helmkamp 1998-5-14 3666 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR107292  Brassica nigra George K. Helmkamp, E. A. Helmkamp 1998-5-14 3650 Monterey Coast Range, Peachtree Valley, along Calif. Hwy 198, 6.2 mi. west of the Fresno/Monterey County lines. 503 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
  UCR118272  Micropus californicus George K. Helmkamp, E. A. Helmkamp 2000-4-24 5526 A 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
  UCR118278  Collinsia parviflora George K. Helmkamp, E. A. Helmkamp 2000-4-24 5536 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
  UCR118282  Briza minor George K. Helmkamp, E. A. Helmkamp 2000-4-24 5531 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
  UCR121610  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2002-4-22 7436 Monterey Salinas Valley, 13.3 mi east of US-101 along Calif. Hwy 198 in the general area of Mustang Ridge 457 Comment
  UCR121924  Iris douglasiana George K. Helmkamp, E. A. Helmkamp 2002-4-19 7495 Monterey Santa Lucia Mountains, Los Burros Rd. (N of Gorda); 0.9 mi east of Calif. Hwy 1 122 Comment
  UCR127080  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 1998-5-19 3837 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127124  Lotus purshianus George K. Helmkamp, E. A. Helmkamp 1998-5-19 3864 Monterey Reservoir area., San Antonio Rd 0.7 mi north of G-14 (Interlake Rd between San Antonio and Nacimiento reservoirs) 335 Comment
  UCR127129  Castilleja affinis subsp. affinis George K. Helmkamp, E. A. Helmkamp 1998-5-19 3817 Monterey Central Coast Ranges, Salinas Valley Quinado Cyn., 12 mi south of King City along (G-14) Jolon Road 412 Comment
  UCR127135  Vulpia microstachys var. ciliata George K. Helmkamp, E. A. Helmkamp 1998-5-19 3826 Monterey Central Coast Ranges, Salinas Valley Quinado Cyn., 12 mi south of King City along (G-14) Jolon Road 412 Comment
  UCR127137  Lupinus albifrons var. collinus George K. Helmkamp, E. A. Helmkamp 1998-5-19 3832 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR130048  Lupinus microcarpus var. microcarpus George K. Helmkamp, E. A. Helmkamp 2000-4-24 5579 Monterey Salinas Valley, 3.0 miles south of Lockwood on Tule Cyn [Interlake] Rd. 244 Comment
  UCR130106  Plectritis brachystemon George K. Helmkamp, E. A. Helmkamp 2000-4-24 5573 Monterey Salinas Valley, 3.0 miles south of Lockwood on Tule Cyn [Interlake] Rd. 244 Comment
  UCR130604  Festuca dertonensis 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
  UCR130609  Rubus ursinus George K. Helmkamp, E. A. Helmkamp 1999-5-21 4852 Monterey Santa Lucia Mountains, Willow Creek Rd 1.7 mi east of Calif. Hwy 1 north of Gorda 290 Comment
  UCR130615  Lotus benthamii George K. Helmkamp, E. A. Helmkamp 1999-5-21 4858 Monterey Santa Lucia Mountains, Willow Creek Rd 1.7 mi east of Calif. Hwy 1 north of Gorda 290 Comment
  UCR145620  Melica imperfecta George K. Helmkamp, E. A. Helmkamp 2000-4-24 5484 A Monterey Central Outer Coast Range, Nacimiento Road, 12 mi north of Gorda and 3.8 mi east of CA Hwy 1, ridge above Kirk Creek 305 Comment
  UCR161663  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2005-5-17 9493 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  UCR67400  Paspalum dilatatum George K. Helmkamp 1990-9-5 s.n. Monterey Central Coast, 2 miles north of Gorda 46 Comment
  CAS-BOT-BC523893  Leontodon saxatilis subsp. longirostris George K. Helmkamp; Elizabeth Helmkamp 2013-5-30 20715 Nevada Northern Sierra Nevada Mountains Foothills: along Hwy CA-20, 2.5 mi W of CA-49 in Grass Valley 623 Comment
  RSA0012001  Castilleja miniata subsp. miniata George K. Helmkamp, E. A. Helmkamp 2010-8-26 16860 Nevada Donner Pass Road, 0.8 mile west of its junction with Hwy. I-80, 0.65 mi. NE (62 deg.) of Kingvale 1921 Comment
  RSA0093481  Mentha canadensis George K. Helmkamp, E. A. Helmkamp 2012-10-8 19998 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
  RSA0115334  Plantago major George K. Helmkamp, E. A. Helmkamp 2012-10-9 20012 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
  RSA739841  Plagiobothrys scouleri var. hispidulus George K. Helmkamp, E. Helmkamp 2007-6-12 12344 Nevada Northern Sierra Nevada Mtns.: Bowman Lake Rd. 0.6 miles N of Hwy CA-20, at the border of Placer Co. 1387 Comment
  RSA794592  Gilia leptalea subsp. bicolor George K. Helmkamp, E. A. Helmkamp 2010-8-26 16846 Nevada Donner Pass Road, 0.8 mile west of its junction with Hwy. I-80, 0.65 mi. NE (62 deg.) of Kingvale 1921 Comment
  RSA795043  Hypochaeris radicata George K. Helmkamp, E. A. Helmkamp 2011-7-17 17755 Nevada 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
  SBBG123105  Calyptridium monospermum G. K. Helmkamp with E. A. Helmkamp 2007-6-12 12337 Nevada Spaulding Lake Rd, 0.3 mi N of jct with Hwy 20 1604 Comment
  SD237338  Madia citriodora G. K. Helmkamp, E. A. Helmkamp 2008-9-18 14122 Nevada Foothills, northern Sierra Nevada Mountains: Tyler-Foote Road 5.0 miles northeast of the junction with CA-49. 776 Comment
  SD239762  Trifolium hirtum G. K. Helmkamp, E. A. Helmkamp 2009-5-28 14818 Nevada Sierra Nevada Mountains Foothills: along CA-49, 2.0 miles north of its junction with CA-20, north of Nevada City. 779 Comment
  SD239874  Navarretia leptalea subsp. leptalea G. K. Helmkamp, E. A. Helmkamp 2007-8-1 12664 Nevada Northern Sierra Nevada Mountains: near Camp Spaulding; along Lake Spaulding Road 0.4 mile north of its junction with CA-20 (Blue Canyon 7.5'Q) 1573 Comment
  SD241086  Prunella vulgaris var. lanceolata George K. Helmkamp, E. A. Helmkamp 2012-6-13 19202 Nevada Northern Sierra Nevada Moutains Foothills: Maybert Road along South Yuba River, 0.6 miles northeast of the river bridge at Washington. (Washington 7.5'Q) 796 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
  SD254563  Alyssum simplex George K. Helmkamp, Ann Kerchner, Amy Barnes. 2012-7-23 19481 Nevada Northern Sierra Nevada Mountains: Stampede Meadows Road, c. 0.65 miles south of the Sierra County line (Boca 7.5'Q) 1737 Comment
  SEINET3245844  Quercus kelloggii G. K. Helmkamp, E. A. Helmkamp 2007-1 11722 Nevada Foothills, Northern Sierra Nevada Mountains: just south of the crossing of CA-49 over the South Yuba River. 390 Comment
  SEINET4142654 Image available Rhamnus tomentella subsp. tomentella George K. Helmkamp, E. A. Helmkamp 2011-6-2 17414 Nevada Northern Sierra Nevada Mountain Foothills: Along CA-20, 1.5 miles W of junction with CA-49 in Grass Valley 727 Comment
  SEINET4560802  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2011-1 17783 Nevada Northern Sierra Nevada Mountain Foothills: You Bet Road just northeast of its junction with CA-174, 1.25 mi. east (91 degrees) of Peardale 778 Comment
  SEINET4560925  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 2011-1 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
  UCD103830  Acmispon americanus var. americanus G. K. Helmkamp; E. A. Helmkamp 2007-8-1 12665 Nevada Northern Sierra Nevada Mountains: near Camp Spaulding; along Lake Spaulding Road 0.4 mile north of its junction with CA-20. 1573 Comment
  UCD111972  Ceanothus integerrimus G. K. Helmkamp; Elizabeth Helmkamp 2006-5-11 10391 Nevada Northern Sierra Nevada: CA Hwy 49 at the crossing of the South Yuba River (N of Nevada City). 402 Comment
  UCD134484  Micropus californicus var. californicus G. K. Helmkamp; Elizabeth Helmkamp 2006-5-11 10383 Nevada Northern Sierra Nevada Mountains. Cedarsong Road, 0.1 mile NE of CA-Hwy 49 (NW of Nevada City). 637 Comment
  UCD142802  Euphorbia serpillifolia subsp. hirtula G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12620 Nevada Northern Sierra Nevada Mtns: Bowman Lake Road, 9.9 miles north of its junction with CA-20. 1774 Comment
  UCR121453  Eriogonum umbellatum var. polyanthum George K. Helmkamp, E. A. Helmkamp 1999-6-29 5051 Nevada Northern Sierra Nevada Range, Prosser Creek at Hobart Mills, c. 50-100 yards east of Calif. Hwy 89, NE of Lake Tahoe 1707 Comment
  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
  UCR173586  Geranium dissectum George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10370 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173683  Hordeum leporinum George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10408 Nevada Northern Sierra Nevada Foothills, San Juan Ridge area at North Columbia, c. 9.3 mi. east of Calif. Hwy 49 884 Comment
  UCR176072  Linanthus harknessii George K. Helmkamp, E. A. Helmkamp 2006-8-14 11256 Nevada Northern Sierra Nevada Mtns, about 0.7 mile east of Donner Pass along Donner Pass Road 2041 Comment
  UCR176078  Ageratina occidentalis George K. Helmkamp, E. A. Helmkamp 2006-8-14 11250 Nevada Northern Sierra Nevada Mtns, about 0.7 mile east of Donner Pass along Donner Pass Road 2041 Comment
  UCR176252  Agrostis pallens George K. Helmkamp, E. A. Helmkamp 2006-8-14 11237 Nevada Northern Sierra Nevada Mtns, just south of I-80 on Lake Valley Rd 1755 Comment
  UCR176284  Lotus George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10412 Nevada Northern Sierra Nevada Foothills, along Calif. Hwy 49, 2.1 mi. N of the South Yuba River bridge 534 Comment
  UCR176533  Potentilla gracilis var. fastigiata George 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
  UCR189148  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2007-7-27 12593 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
  UCR190216  Aster occidentalis var. yosemitanus George K. Helmkamp, E. A. Helmkamp 2007-8-1 12666 Nevada Northern Sierra Nevada Mountains, near Camp Spaulding; along Lake Spaulding Road 0.4 mile north of its junction with CA-20 1573 Comment
  UCR190328  Juncus nevadensis George K. Helmkamp, E. A. Helmkamp 2007-8-1 12658 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
  UCR190330  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, E. A. Helmkamp 2007-8-1 12656 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
  UCR191092  Eriogonum nudum var. nudum George K. Helmkamp, E. A. Helmkamp 2007-6-12 12336 Nevada Northern Sierra Nevada Mountains, Spaulding Lake Road, 0.3 mile north of its junction with Hwy CA-20 1604 Comment
  UCR193106  Calochortus minimus George K. Helmkamp, E. A. Helmkamp 2007-6-12 12338 Nevada Northern Sierra Nevada Mountains, Spaulding Lake Road, 0.3 mile north of its junction with Hwy CA-20 1604 Comment
  UCR194865  Juncus bufonius var. bufonius George K. Helmkamp, E. A. Helmkamp 2007-5-26 12110 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 1.0 mile northeast of CA-49 622 Comment
  UCR194877  Cornus nuttallii George K. Helmkamp, E. A. Helmkamp 2007-5-26 12123 Nevada Northern Sierra Nevada Mountains Foothills, along CA-49, 1.2 miles north of North San Juan 610 Comment
  UCR206910  Hypochaeris radicata George K. Helmkamp, E. A. Helmkamp 2009-5-28 14817 Nevada Sierra Nevada Mountains Foothills, along CA-49, 2.0 miles north of its junction with CA-20, north of Nevada City 780 Comment
  UCR206965  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-5-28 14812 Nevada Sierra Nevada Mountains Foothills, along CA-49, 2.0 miles north of its junction with CA-20, north of Nevada City 780 Comment
  UCR229426  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2011-7-26 17875 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
  UCR229542  Juncus tenuis George K. Helmkamp, E. A. Helmkamp 2011-7-26 17866 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
  UCR229548  Cryptantha affinis George K. Helmkamp, E. A. Helmkamp 2011-7-26 17890 B 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
  UCR232277  Lotus nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 2011-9-30 18363 Nevada Northern Sierra Nevada Mountains, small, open flat along CA-20, 2.6 miles west of its junction with Lowell Hill Road 1581 Comment
  UCR232296  Holcus lanatus George K. Helmkamp, E. A. Helmkamp 2011-5-26 17389 Nevada Northern Sierra Nevada Mountains Foothills, SE of Grass Valley, 0.2 mile south of CA-174 at the junction of Meadow View Road and Peardale Road 834 Comment
  UCR232663  Smilacina racemosa George K. Helmkamp, E. A. Helmkamp 2011-9-30 18358 Nevada Northern Sierra Nevada Mountains, small, open flat along CA-20, 2.6 miles west of its junction with Lowell Hill Road 1581 Comment
  UCR233096  Piperia transversa George K. Helmkamp, E. A. Helmkamp 2011-7-17 17742 Nevada Northern Sierra Nevada Mountains Foothills, Red Dog Road, 1.6 miles northeast of its junction with You Bet Road, 3 miles NE (313 deg. ) of Gold Run 867 Comment
  UCR233204  Streptanthus George K. Helmkamp, E. A. Helmkamp 2011-6-9 17516 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
  UCR233627  Daucus carota George K. Helmkamp, E. A. Helmkamp 2011-7-17 17782 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.0 miles east of its junction with CA-174, 0.6 mile west of the crossing over Greenhorn Creek, 2.7 miles ESE (95 deg. ) of Peardale 762 Comment
  UCR233631  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-6-9 17510 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
  UCR233641  Alisma triviale George K. Helmkamp, E. A. Helmkamp 2011-7-17 17795 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road just northeast of its junction with CA-174, 1.25 mi. east (91 deg. ) of Peardale 778 Comment
  UCR233653  Leucanthemum vulgare George K. Helmkamp, E. A. Helmkamp 2011-7-17 17779 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.0 miles east of its junction with CA-174, 0.6 mile west of the crossing over Greenhorn Creek, 2.7 miles ESE (95 deg. ) of Peardale 762 Comment
  UCR234175  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2010-8-26 16868 Nevada Northern Sierra Nevada Mountains, Eagle Lakes Road, about 0.5 mile west of its junction with Carlyle Road, 5.8 mi. NE (66 deg. ) of Emigrant Gap, N of I-80 1655 Comment
  UCR234654  Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2011-6-2 17433 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 3.3 miles west of its junction with CA-49 in Grass Valley 627 Comment
  UCR234659  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2010-8-26 16841 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
  UCR234662  Cornus sericea subsp. sericea George K. Helmkamp, E. A. Helmkamp 2010-8-26 16835 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
  UCR237018  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2012-4-21 18809 Nevada Northern Sierra Nevada Mountains Foothills, junction of Lime Kiln Road and Amberley Lane, 14.5 mi. NNW (345 deg. ) of Auburn 414 Comment
  UCR237098  Plectritis ciliosa subsp. ciliosa George K. Helmkamp, E. A. Helmkamp 2012-4-21 18820 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
  UCR237339  Verbena lasiostachys var. lasiostachys George K. Helmkamp, E. A. Helmkamp 2012-6-13 19191 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
  UCR237344  Trientalis latifolia George K. Helmkamp, E. A. Helmkamp 2012-6-13 19180 Nevada Northern Sierra Nevada Mountains Foothills, Washington Road, 5.6 miles north of its junction with CA-20 and along Washington Creek 787 Comment
  UCR237349  Madia exigua George K. Helmkamp, E. A. Helmkamp 2012-6-13 19160 Nevada Northern Sierra Nevada Mountains Foothills, Washington Road, 2.6 miles north of its junction with CA-20 1088 Comment
  UCR240975  Daucus carota George K. Helmkamp, E. A. Helmkamp 2012-10-9 19997 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
  UCR241748  Gayophytum George K. Helmkamp, E. A. Helmkamp 2012-9-25 19926 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
  UCR249954  Lupinus bicolor George K. Helmkamp, Elizabeth Helmkamp 2013-4-13 20312 Nevada Northern Sierra Nevada Mountains Foothills, Magnolia Road, 3.0 miles east of its junction with CA-49 495 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
  UCR249962  Hordeum murinum subsp. murinum George K. Helmkamp, Elizabeth Helmkamp 2013-4-13 20307 Nevada Northern Sierra Nevada Mountains Foothills, Magnolia Road, 3.0 miles east of its junction with CA-49 495 Comment
  UCR252946  Phalaris aquatica George K. Helmkamp, Elizabeth Helmkamp 2013-8-7 22114 Nevada Sierra Nevada Mountains Foothills, junction of Table Meadow Road and Combie Road, SE of Higgins Corner 448 Comment
  UCR254594  Brassica geniculata George K. Helmkamp 2014-3-11 22552 Nevada Sierra Nevada Mountains Foothills, along CA-49, 0.2 mile north of the junction with Gautier Road, between Higgins Corner and Auburn 421 Comment
  UCR256652  Vicia americana George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20744 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
  UCR256658  Croton setiger George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20725 Nevada Northern Sierra Nevada Mountains Foothills, along Hwy CA-20, 3.5 miles west of CA-49 in Grass Valley 623 Comment
  UCR256664  Elymus glaucus var. glaucus George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20730 Nevada Northern Sierra Nevada Mountains, along Hwy CA-20, 1.6 miles northeast of Pine Flat Way, north of Scotts Flat Reservoir 1189 Comment
  UCR256669  Ranunculus occidentalis George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20740 Nevada Northern Sierra Nevada Mountains, Pine Flat Way, just south of its junction with CA-20 1151 Comment
  UCR256831  Horkelia fusca subsp. parviflora George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20737 Nevada Northern Sierra Nevada Mountains, Pine Flat Way, just south of its junction with CA-20 1151 Comment
  UCR257157  Sisyrinchium bellum George K. Helmkamp 2014-4-17 22743 Nevada Northern Sierra Nevada Mountains Foothills, along CA-120, 2.3 miles west of its junction with CA-49 in Grass Valley 729 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
  UCR275316  Cyperus strigosus George K. Helmkamp, Elizabeth Helmkamp 2013-8-7 22111 Nevada Sierra Nevada Mountains Foothills, north of Auburn, Robles Drive, just south of the junction of Darkhorse Drive and Combie Rd. 444 Comment
  SBBG128996  Lupinus nanus G. K. Helmkamp, E. A. Helmkamp 2012-6-13 19192 Nevada village of Washington, Relief Hill Rd, 0.4 mi N of its jct with Maybert Rd, NE of the bridge over the S Yuba River 790 Comment
  SEINET272172  Clarkia similis G. K. Helmkamp, E. A. Helmkamp 1997-4-24 1657 Orange Cleveland National Forest ; Cleveland National Forest 1.6 mi. SE of Ortega Hwy (CA-74) on Rd. 7-S14. UTM 10km cell: MH-5E 1N. San Juan Hot Spring 549 Comment
  CAS-BOT-BC174234  Bromus orcuttianus G. 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
  CAS-BOT-BC226936  Lomatium caruifolium var. denticulatum George K. Helmkamp; E. A. Helmkamp 2011-4-10 17169 Placer Sacramento Valley: along Riosa Road, 2.3 miles east of Sheridan 43 Comment
  CAS-BOT-BC248284  Prunella vulgaris var. lanceolata George K. Helmkamp; E. A. Helmkamp 2010-8-11 16763 Placer Northern Sierra Nevada Mountains: Finning Mill Road, 2.3 miles north of Forest Hill Road at the crossing of McBride Creek 1082 Comment
  CAS-BOT-BC248300  Rubus laciniatus George K. Helmkamp; E. A. Helmkamp 2010-8-11 16752 Placer Northern Sierra Nevada Mountains: Finning Mill Road, 1.2 miles north of Forest Hill Road, at the crossing of Mill Creek 1085 Comment
  CAS-BOT-BC438836  Lupinus microcarpus var. densiflorus George K. Helmkamp; Mary Alice Barnes 2013-5-3 20506 Placer Northern Sierra Nevada Mountains Foothills: junction of Forest Hill Road and Forest Hill Bypass (Old Auburn-Foresthill Rd.), northeast of Auburn. 445 Comment
  CDA36210  Cerastium glomeratum G. K. Helmkamp, E. A. Helmkamp 2009-3-11 14388 Placer Sacramento Valley; Ranch House Road, 0.2 mile south of Sheridan. Comment
  CDA36375  Petrorhagia dubia G. K. Helmkamp, E. A. Helmkamp 2009-5-7 14621 Placer Sierra Nevada Mountains Foothills; Oxbow Road, 2.0 miles south of its junction with Mosquito Ridge Road; north edge of Oxbow Reservoir. Comment
  OBI82266  Phacelia heterophylla subsp. virgata George K. Helmkamp, Mary Alice Barnes 2013-5-3 20487 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
  RSA0035673  Rumex acetosella George K. Helmkamp, Mary Alice Barnes 2013-5-3 20465 Placer SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road 974 Comment
  RSA0035848  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, Mary Alice Barnes 2013-4-18 20348 Placer Yankee Jim Road, 0.9 mile east of its junction with Canyon Way, 4.4 miles SE (167 ) of Colfax 561 Comment
  RSA0036006  Lupinus microcarpus var. densiflorus George K. Helmkamp, Mary Alice Barnes 2013-5-3 20459 Placer Forest Hill Road, 4.8 miles east of its junction with Upper Clementine Lake Road, 10.1 mi. NE (52 ) of Auburn 672 Comment
  RSA0038508  Lupinus nanus George K. Helmkamp, Mary Alice Barnes 2013-5-3 20471 Placer Mosquito Ridge Road, 1.1 miles south of Forest Hill Road 962 Comment
  RSA0039075  Trifolium wormskioldii George K. Helmkamp, Mary Alice Barnes 2013-4-18 20363 Placer Yankee Jim Road, 2.4 miles east of its junction with Canyon Way, 2.5 mi. ENE (78 ) of Weimar 512 Comment
  RSA0053705  Kelloggia galioides G. K. Helmkamp, E. A. Helmkamp 2012-6-19 19223 Placer Northern Sierra Nevada Mountains: Devil's Thumb Road (Deadwood Rd.), 1.2 miles S of its junction with Foresthill Road 1648 Comment
  RSA0093628  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2012-6-19 19214 Placer Northern Sierra Nevada Mountains Foothills: Foresthill Road, 2.6 miles east of its junction with Mosquito Ridge Road in Forest Hill. 1052 Comment
  RSA0093630  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2012-6-19 19209 Placer Northern Sierra Nevada Mountains Foothills. Mosquito Ridge Road, 2.7 miles south of its junction with Foresthill Road. 820 Comment
  RSA739784  Triteleia ixioides subsp. anilina George K. Helmkamp, E. A. Helmkamp 2007-5-18 11997 Placer Forest Hill Road, 4.3 miles northeast of the bridge over the junction of North and West Forks of the American River 485 Comment
  RSA755562  Juglans hindsii George K. Helmkamp, E. A. Helmkamp 2009-8-22 15520 Placer along CA-193, 5.3 miles east of Lincoln 123 Comment
  RSA790859  Ceanothus tomentosus George K. Helmkamp, E. A. Helmkamp 2012-5-11 18946 Placer Finning Mill Road, 1.2 mi north of its junction with Forest Hill Road. 1104 Comment
  RSA790862  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-5-11 18940 Placer Finning Mill Road at the junction with Forest Hill Road. 1144 Comment
  RSA791745  Claytonia parviflora subsp. grandiflora George K. Helmkamp, E. A. Helmkamp 2012-5-5 18919 Placer Northern Sierra Nevada Mountains Foothills: Lake Clementine Road, 1.2 miles west of its junction with Foresthill Road, 0.3 air miles southest (123 degrees) of Clementine Dam on the American River. 396 Comment
  RSA795078  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2011-8-26 18184 Placer Along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat. 2050 Comment
  RSA795082  Collomia tinctoria George K. Helmkamp, E. A. Helmkamp 2011-8-26 18169 Placer along Forest Hill Road, 0.4 miles west of Robinson Flat. 2041 Comment
  SBBG122299  Lupinus bicolor G. K. Helmkamp with E. A. Helmkamp 2008-4-17 13296 Placer ca. 0.2 mi N of St Hwy 193 on Fowler Rd, ca. 6 mi E of Lincoln 92 Comment
  SD212687  Eriogonum wrightii var. subscaposum G. K. Helmkamp, Elizabeth Helmkamp 2005-9-30 9935 Placer Northern High Sierra Mountains: Hampshire Rocks Road South of the I-80 Rainbow exit, circa 2 miles East of Cisco Grove. 1805 Comment
  SD235015  Galium bolanderi G. K. Helmkamp, E. A. Helmkamp 2006-8-11 11214 Placer Northern Sierra Nevada Mtns foothills: along Forest Hill Rd., 8.7 miles northeast of Forest Hill. 1310 Comment
  SD237343  Micropus californicus var. californicus G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15918 Placer Sierra Nevada Mountains Foothills: along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing. 199 Comment
  SD237401  Silene gallica G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15903 Placer Sierra Nevada Mountains Foothills: along Salmon Falls Road, at Miners Valley Road, 4.5 miles south of junction with CA-49 at Pilot Hill (Pilot Hill 7.5'Q) 287 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
  SD241652  Triteleia laxa George K Helmkamp, E. A. Helmkamp 2010-4-17 15889 Placer Sierra Nevada Mountins Foothills: Rattlesnake Bar Road, 4.2 miles southwest of its junction with CA-49 naer Pilot Hill (Pilot Hill 7.5'Q) 359 Comment
  SD241766  Matricaria discoidea George K. Helmkamp, E. A. Helmkamp 2012-3-31 18652 Placer Sacramento Valley: along CA-193, 0.1 mile west of its junction with Sierra College Blvd. 88 Comment
  SD241951  Diplacus aurantiacus George K. Helmkamp, E. A. Helmkamp 2010-4-17 15891 Placer Sierra Nevada Mountains Foothills; Rattlesnake Bar Road, 7.3 miles southwest of its junction with CA-49 near Pilot Hill (Pilot Hill 7.5'Q) 331 Comment
  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
  SD243049  Briza minor George K. Helmkamp, E. A. Helmkamp 2011-4-10 17145 Placer Sacramento Valley: east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road. 98 Comment
  SD243197  Rubus laciniatus George K. Helmkamp, E. A. Helmkamp 2010-8-11 16752 Placer Northern Sierra Nevada Mountains: Finning Mill Road, 1.2 miles north of Forest Hill Road, at the crossing of Mill Creek. 1085 Comment
  SD243198  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2010-10-16 17017 Placer Northern Sierra Nevada Mountains Foothill: Yankee Jim's Road, 0.5 mile north of Forest Hill Road in Foresthill, near intersection with Mayflower Rd. 947 Comment
  SD247276  Triteleia ixioides subsp. scabra George K. Helmkamp, Elizabeth Helmkamp 2012-6-19 19236 Placer Northern Sierra Nevada Moutains: Foresthill Road, 6.9 miles east of its junction with Devil's Thumb Road (Duncan Peak 7.5'Q) 1972 Comment
  SD247379  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. 35 Comment
  SD247463  Clarkia biloba subsp. biloba George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20827 Placer Northern Sierra Nevada Mountains Foothills: junction of Yankee Jim's Road and Shirttail Canyon Road, NW of Foresthill (Colfax 7.5'Q) 462 Comment
  SD247512  Triphysaria eriantha George K. Helmkamp, Amy Barnes 2013-3-28 20285 Placer Easterm Sacramento Valley: along 10th Street/Ranch House Road, 0.6 mile south of its junction with Riosa Road in Sheridan (Lincoln 7.5'Q) 42 Comment
  SD255783  Limnanthes alba subsp. alba George K Helmkamp, Amy Barnes 2014-4-23 22812 Placer Sierra Nevada Mountains Foothills: Spring Garden Road, at the north side of its junction with Foresthill Road, 8.4 km west of Foresthill (Colfax 7.5'Q) 719 Comment
  SEINET11262283  Vicia hirsuta George Helmkamp, E. A. Helmkamp 2012-5-5 18916 Placer Northern Sierra Nevada Mountain Foothills: Lake Clementine Road, 1.2 miles west of its junction with Foresthill Road, .3 air miles SE of Clementine Dam on the American River (Auburn 7.5').; 0 396 Comment
  SEINET3246067  Quercus wislizeni var. wislizeni G. K. Helmkamp, E. A. Helmkamp 2007-1 11710 Placer Foothills, Northern Sierra Nevada Mountains: Forest Hill Road, 0.9 mile east of its junction with CA-49 at the bridge of the junction of American River forks. 287 Comment
  SEINET3271551 Image available Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2009-5-7 14603 Placer Sierra Nevada Mountains Foothills; Mosquito Ridge Road, 4.4 miles east of its junction with Forest Hill Road in Foresthill 805 Comment
  SEINET3282796 Image available Agrostis exarata George K. Helmkamp, E. A. Helmkamp 2009-7-16 15207 Placer Sierra Nevada Mountains; Foresthill Road, 20.3 miles northeast of the city of Foresthill. 1704 Comment
  SEINET3411995 Image available Festuca bromoides George K. Helmkamp, E. A. Helmkamp 2012-3-31 18647 Placer Sacramento Valley: along CA-193, 0.1 mile W of its junction with Sierra College Blvd. 88 Comment
  SEINET4560780  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2011-1 18184 Placer Northern Sierra Nevada Mountains: along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat 2050 Comment
  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
  SEINET9262074  Agrostis stolonifera George K. Helmkamp, Elizabeth Helmkamp 2012-1 19904 Placer Northern Sierra Nevada Mountains: Blue Canyon Road, 1.1 miles south of its intersection with I-80 about 1/2 miles south of Blue Canyon-Nyack Airport (Blue Canyon 7.5 Q) 1472 Comment
  UCD100570  Eriogonum nudum var. deductum G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12636 Placer Northern Sierra Nevada Mountains, southeast end of Cisco Grove, along local road just before it passes under Interstate-80. 1744 Comment
  UCD101887  Dudleya cymosa G. K. Helmkamp; Elizabeth Helmkamp 2006-5-13 10424 Placer Northern Sierra Nevada. 2.1 miles S of Auburn, along CA-Hwy 49. 293 Comment
  UCD104064  Acmispon brachycarpus G. K. Helmkamp; E. A. Helmkamp 2007-3-25 11711 Placer Northern Sierra Nevada Mountains: Forest Hill Road, 0.9 mile east of its junction with CA-49 at the bridge of the junction with American River forks. 287 Comment
  UCD113781  Rubus glaucifolius G. K. Helmkamp; E. A. Helmkamp 2007-5-23 12053 Placer Northern Sierra Nevada Mountains Foothills; along Forest Hill Road, 2.3 miles northeast of Foresthill. 1116 Comment
  UCD116847  Sidalcea oregana subsp. spicata G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12639 Placer Northern Sierra Nevada Mountains, 0.1 mile south of the Rainbow exit from Interstate 80, 0.5 miles east of Rainbow. 1790 Comment
  UCD121613  Galium bolanderi G. K. Helmkamp; E. A. Helmkamp 2006-8-11 11214 Placer Northern Sierra Nevada Mtns foothills: along Forest Hill Rd., 8.7 miles northeast of Forest Hill. 1311 Comment
  UCD122674  Mimulus nasutus G. K. Helmkamp; E. A. Helmkamp 2007-9-14 12954 Placer Northern Sierra Nevada Mountains. Along Mosquito Ridge Road, 0.4 mile east of Foresthill. 942 Comment
  UCD130277  Chaenactis douglasii var. douglasii G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12624 Placer Northern Sierra Nevada Mountains; southeast end of Cisco Grove; along local road just before it passes under Interstate-80. 1744 Comment
  UCD130409  Chondrilla juncea G. K. Helmkamp; E. A. Helmkamp 2006-8-11 11206 Placer Northern Sierra Nevada Mountain. Along connecting road joining Forest Hill Road, with the CA-49 crossing of American River. 396 Comment
  UCD130486  Cichorium intybus G. K. Helmkamp; E. A. Helmkamp 2007-9-14 12949 Placer Northern Sierra Nevada Mountains. Along Mosquito Ridge Road, 0.4 mile east of Foresthill. 942 Comment
  UCD64109  Quercus wislizeni var. wislizeni G. K. Helmkamp; E. A. Helmkamp 2007-3-25 11710 Placer Northern Sierra Nevada Mountains: Forest Hill Road, 0.9 mile east of its junction with CA-49 at the bridge of the junction with American River forks. 287 Comment
  UCR120237  Geum macrophyllum George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-30 5067 Placer Northern Sierra Nevada Range, Truckee River, c. 4 mi upstream from Lake Tahoe; 1.1 mi south of Squaw Valley Road 1860 Comment
  UCR120247  Sarcodes sanguinea George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5037 Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR170797  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2005-9-30 9933 Placer Northern Sierra Nevada Mtns., Hampshire Rocks Road south of the I-80 Rainbow exit (c. 2 mi east of Cisco Grove) 1805 Comment
  UCR171024  Raphanus sativus George K. Helmkamp, E. A. Helmkamp 2006-2-9 10062 Placer Northern Central Valley, Clark Tunnel Road and Calif. Highway 193, east of Lincoln 113 Comment
  UCR171029  Veronica persica George K. Helmkamp, E. A. Helmkamp 2006-2-24 10071 Placer Northern Sacramento Valley, Wise Road just east of its junction with Calif. Highway 65; c. 1 mi SE of Ewing 47 Comment
  UCR171350  Pinus washoensis George K. Helmkamp, E. A. Helmkamp 2005-10-1 9996 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
  UCR171545  Claytonia perfoliata George K. Helmkamp, E. A. Helmkamp 2006-2-9 10058 Placer Northern Central Valley, English Colony Way [Humphrey Road] at Sierra College Blvd near Clover Valley Creek; SE of Lincoln 183 Comment
  UCR172649  Eschscholzia californica George K. Helmkamp, Elizabeth Helmkamp 2006-4-13 10198 Placer Northern Sierra Nevada Foothills, Forest Hill Road, 2.5 mi east of its junction with Calif. Hwy 49. North side of the middle fork of the American River, NE of Auburn 274 Comment
  UCR173256  Agoseris grandiflora George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10449 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
  UCR173267  Lupinus albifrons var. collinus George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10429 Placer Northern Sierra Nevada foothills, 2.1 mi south of Auburn along Calif. Hwy 49 293 Comment
  UCR173275  Lupinus albifrons var. collinus George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10439 Placer Northern Sierra Nevada Foothills, c. 4 air mi. NE of Auburn, along Forest Hill Road, 1.8 mi. NE of its junction with Calif. Hwy 49 at the middle fork of the American River 370 Comment
  UCR176264  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2006-8-11 11209 Placer Northern Sierra Nevada Mtns foothills, along Forest Hill Rd., 1.0 mile north of Forest Hill 1037 Comment
  UCR176281  Bromus hordeaceus George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10430 Placer Northern Sierra Nevada foothills, 2.1 mi south of Auburn along Calif. Hwy 49 293 Comment
  UCR177011  Polygonum douglasii George K. Helmkamp, E. A. Helmkamp 2005-9-30 9963 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR188846  Lotus humistratus George K. Helmkamp, E. A. Helmkamp 2007-3-25 11711 Placer Northern Sierra Nevada Mountains Foothills, Forest Hill Road, 0.9 mile east of its junction with CA-49 at the bridge of the junction of American River forks 287 Comment
  UCR189299  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2007-7-27 12626 Placer Northern Sierra Nevada Mountains, Southeast end of Cisco Grove; along local road just before it passes under Interstate-80 1744 Comment
  UCR189637  Polygonum phytolaccifolium George K. Helmkamp, E. A. Helmkamp 2007-7-27 12634 Placer Northern Sierra Nevada Mountains, Southeast end of Cisco Grove; along local road just before it passes under Interstate-80 1744 Comment
  UCR190147  Lathyrus latifolius George K. Helmkamp, E. A. Helmkamp 2007-9-14 12951 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road 0.4 mile east of Foresthill 942 Comment
  UCR190586  Juncus effusus var. exiguus George K. Helmkamp, E. A. Helmkamp 2007-9-14 12957 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road 0.4 mile east of Foresthill 942 Comment
  UCR190919  Festuca arundinacea George K. Helmkamp, E. A. Helmkamp 2007-5-23 12070 Placer Northern Sierra Nevada Mountains, Sugar Pine road, 0.2 mile northwest of Forest Hill Road 1360 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
  UCR191071  Carex fracta George K. Helmkamp, E. A. Helmkamp 2007-5-23 12067 Placer Northern Sierra Nevada Mountains, Sugar Pine road, 0.2 mile northwest of Forest Hill Road 1360 Comment
  UCR193354  Dichelostemma multiflorum George K. Helmkamp, E. A. Helmkamp 2007-5-30 12181 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 10.7 miles east of its junction with Forest Hill Road in Foresthill 588 Comment
  UCR193362  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2007-5-30 12183 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.5 miles east of its junction with Forest Hill Road in Foresthill, between Mosquito Ridge Lookout and North Fork of Middle Fork American River 800 Comment
  UCR193394  Phacelia heterophylla subsp. virgata George K. Helmkamp, E. A. Helmkamp 2007-5-30 12208 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 8.5 miles east of its junction with Forest Hill Road in Foresthill 488 Comment
  UCR193399  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2007-5-30 12198 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 17 miles east of its junction with Forest Hill Road in Foresthill, NW of Ditch Camp 963 Comment
  UCR194956  Lithophragma bolanderi George K. Helmkamp, E. A. Helmkamp 2007-5-18 12033 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
  UCR194967  Ailanthus altissima George K. Helmkamp, E. A. Helmkamp 2007-5-18 12024 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road, 4.2 miles southeast of Foresthill 793 Comment
  UCR194975  Lupinus microcarpus var. densiflorus George K. Helmkamp, E. A. Helmkamp 2007-5-18 11996 Placer Northern Sierra Nevada Mountains Foothills, Forest Hill Road, 4.3 miles northeast of the bridge over the junction of North and West Forks of the American River 485 Comment
  UCR198532  Plagiobothrys stipitatus var. micranthus George K. Helmkamp, E. A. Helmkamp 2008-4-17 13294 Placer Sacramento Valley, Ranch House Road, 0.2 mile southeast of Sheridan 37 Comment
  UCR198538  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2008-4-17 13281 Placer Sacramento Valley, Ranch House Road, 0.2 mile southeast of Sheridan 37 Comment
  UCR201762  Sorbus scopulina George K. Helmkamp, E. A. Helmkamp 2008-8-20 14018 Placer Northern Sierra Nevada Mountains, Rainbow exit south from US-80 and east of Big Bend, adjacent to the South Yuba River 1811 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
  UCR207126  Chaenactis douglasii var. douglasii George K. Helmkamp, E. A. Helmkamp 2009-7-16 15215 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
  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
  UCR207885  Lupinus albifrons var. collinus George K. Helmkamp, E. A. Helmkamp 2009-4-22 14580 Placer Sierra Nevada Mountains Foothills, Forest Hill road near Grizzly Bear House, about one mile northeast of the road to the lower end of Clementine Lake 732 Comment
  UCR208276  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2009-5-7 14644 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 8.9 miles east of its junction with Forest Hill Road in Foresthill 476 Comment
  UCR208556  Eriodictyon californicum George K. Helmkamp, E. A. Helmkamp 2009-5-11 14671 Placer Sierra Nevada Mountains Foothills, Driver's Flat Road 0.8 mile south of its junction with Forest Hill Road, c. 8 miles (air) NE of Auburn 517 Comment
  UCR208567  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2009-5-7 14603 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 4.4 miles east of its junction with Forest Hill Road in Foresthill 805 Comment
  UCR208575  Trifolium microcephalum George K. Helmkamp, E. A. Helmkamp 2009-5-7 14605 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 4.4 miles east of its junction with Forest Hill Road in Foresthill 805 Comment
  UCR208585  Ceanothus diversifolius George K. Helmkamp, E. A. Helmkamp 2009-5-11 14654 Placer Sierra Nevada Mountains Foothills, along Forest Hill Road, 2.5 miles northeast of Foresthill 1073 Comment
  UCR208613  Lotus micranthus George K. Helmkamp, E. A. Helmkamp 2009-5-7 14614 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 9.8 miles east of its junction with Forest Hill Road in Foresthill 433 Comment
  UCR209733  Eriophyllum lanatum var. croceum George K. Helmkamp, E. A. Helmkamp 2009-8-12 15422 Placer Sierra Nevada Mountains, Forest Hill Road, 20.5 miles northeast of the city of Foresthill 1662 Comment
  UCR209743  Cordylanthus tenuis subsp. tenuis George K. Helmkamp, E. A. Helmkamp 2009-8-12 15424 Placer Sierra Nevada Mountains, Forest Hill Road, 20.5 miles northeast of the city of Foresthill 1662 Comment
  UCR209751  Agrostis George K. Helmkamp, E. A. Helmkamp 2009-8-12 15430 Placer Sierra Nevada Mountains, Forest Hill Road, 20.5 miles northeast of the city of Foresthill 1662 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
  UCR218134  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2010-6-26 16384 Placer Sierra Nevada Mountains Foothills, junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  UCR218218  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2010-6-26 16416 Placer Sierra Nevada Mountains Foothills, Canyon Way, 1.2 miles south of its junction with Yankee Jim's Road, 1.7 mi. NE (24 deg. ) of Applegate 668 Comment
  UCR218468  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-6-26 16389 Placer Sierra Nevada Mountains Foothills, junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  UCR222543  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2010-4-17 15888 Placer Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 4.2 miles southwest of its junction with CA-49 near Pilot Hill 360 Comment
  UCR222551  Leontodon taraxacoides George K. Helmkamp, E. A. Helmkamp 2010-4-17 15896 Placer Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, about 0.2 mile northeast of the entrance to the Folsom Lake recreational area 305 Comment
  UCR222895  Linanthus bicolor George K. Helmkamp, E. A. Helmkamp 2010-4-17 15899 Placer Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 8.3 miles southwest of its junction with CA-49 near Pilot Hill 308 Comment
  UCR229538  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-7-26 17855 Placer Northern Sierra Nevada Mountains, Emigrant Gap Road, 0.1 mile west of its junction with US-80, 0.65 mi. NE (65 deg. ) of Emigrant Gap 1590 Comment
  UCR231820  Galium bolanderi George K. Helmkamp, E. A. Helmkamp 2010-8-11 16766 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 3.7 miles north of Forest Hill Road 1140 Comment
  UCR231832  Whitneya dealbata George K. Helmkamp, E. A. Helmkamp 2010-8-14 16778 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
  UCR231838  Campanula prenanthoides George K. Helmkamp, E. A. Helmkamp 2010-8-14 16783 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
  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
  UCR231848  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2010-8-11 16755 Placer Northern Sierra Nevada Mountains, Finning Mill Road, 1.2 miles north of Forest Hill Road, at the crossing of Mill Creek 1085 Comment
  UCR231873  Vicia sativa subsp. sativa George K. Helmkamp, E. A. Helmkamp 2011-4-10 17136 Placer Sacramento Valley, east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road 98 Comment
  UCR231883  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2010-10-16 17016 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 0.5 mile north of Forest Hill Road in Foresthill, near intersection with Mayflower Rd. 948 Comment
  UCR232250  Parentucellia viscosa George K. Helmkamp, E. A. Helmkamp 2011-5-6 17221 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
  UCR232626  Vicia americana subsp. americana George K. Helmkamp, E. A. Helmkamp 2010-7-28 16637 Placer Northern Sierra Nevada Mountains, Forest Route 10 (Sugar Pine Rd.), 0.8 mile north of its junction with Forest Hill Road, 8.2 miles NE (34 deg. ) of Foresthill 1311 Comment
  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
  UCR233402  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2011-8-26 18184 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat 2050 Comment
  UCR235385  Osmorhiza George K. Helmkamp, E. A. Helmkamp 2012-5-11 18947 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.2 miles north of its junction with Forest Hill Road 1104 Comment
  UCR235424  Viola sheltonii George K. Helmkamp, E. A. Helmkamp 2012-5-11 18957 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 4.0 miles north of Forest Hill Road and at the junction with Hollow Logging Road 1140 Comment
  UCR235503  Iris hartwegii subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2012-5-11 18942 Placer Foothills, northern Sierra Nevada Mountains, Finning Mill Road at the junction with Forest Hill Road 1136 Comment
  UCR238575  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2012-3-31 18646 Placer Sacramento Valley, along CA-193, 0.1 mile west of its junction with Sierra College Blvd. 88 Comment
  UCR240724  Viola tomentosa George K. Helmkamp, E. A. Helmkamp 2012-6-19 19224 Placer Northern Sierra Nevada Mountains, Devil's Thumb Road [Deadwood Rd.], 1.2 miles south of its junction with Foresthill Road 1648 Comment
  UCR240887  Stipa pulchra George K. Helmkamp, E. A. Helmkamp 2012-3-31 18655 Placer Sacramento Valley, along CA-193, 0.1 mile west of its junction with Sierra College Blvd. 88 Comment
  UCR240916  Phacelia hastata var. compacta George K. Helmkamp, E. A. Helmkamp 2012-6-19 19241 Placer Northern Sierra Nevada Mountains, Foresthill Road, 9.2 miles east of its junction with Devil's Thumb Road 2055 Comment
  UCR240956  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2012-9-25 19907 A 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
  UCR241346  Aster occidentalis var. occidentalis George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19823 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 0.7 mile north of Robinson Flat Campground, about 26 miles northeast of Foresthill, Tahoe National Forest 2034 Comment
  UCR241720  Phleum pratense George K. Helmkamp, E. A. Helmkamp 2012-9-25 19924 Placer Northern Sierra Nevada Mountains, Laing Road, parallel to I-80; 0.2 mile east of its junction with Emigrant Gap Road 1611 Comment
  UCR241738  Pseudognaphalium canescens subsp. beneolens George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19805 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 10.4 miles northeast of Hidden Treasure Road, 0.45 mi. ESE of Whisky Hill 1677 Comment
  UCR242366  Eriogonum ursinum var. ursinum George K. Helmkamp, E. A. Helmkamp 2010-7-28 16668 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 1.6 miles west of the junction with Soda Springs Road at Robinson Flat 2040 Comment
  UCR242370  Viola pinetorum subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2010-7-28 16676 Placer Northern Sierra Nevada Mountains, Robinson Flat campground near the junction of Forest Hill Road and Soda Springs Road, 27 miles northwest of the city of Foresthill 2040 Comment
  UCR249555  Trifolium subterraneum George K. Helmkamp 2013-3-1 20151 Placer Sacramento Valley, Ranch House Road, 0.6 mile southeast of Riosa Road in Sheridan 37 Comment
  UCR249586  Hordeum murinum George K. Helmkamp, Amy Barnes 2013-3-28 20284 Placer Eastern Sacramento Valley, along 10th Street/Ranch House Rd., 0.6 mile south of its junction with Riosa Road in Sheridan 43 Comment
  UCR249595  Galium triflorum George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20816 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 Comment
  UCR250056  Lomatium utriculatum George K. Helmkamp, Mary Alice Barnes 2013-4-18 20336 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
  UCR250140  Hieracium albiflorum George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20812 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 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
  UCR253531  Calochortus albus George K. Helmkamp, Amy Barnes 2014-4-23 22795 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
  UCR253553  Trifolium dubium George K. Helmkamp, Amy Barnes 2014-4-23 22805 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
  UCR257101  Dichelostemma volubile George K. Helmkamp, Amy Barnes 2014-4-23 22785 Placer Sierra Nevada Mountains Foothills, Old Forest Hill Road, 0.4 mile northeast of its junction with CA-49 at North Fork American River 290 Comment
  UCR257600  Bromus hordeaceus George K. Helmkamp, Amy Barnes 2014-3-21 22641 Placer Sacramento Valley, Sheridan, Riosa Road at the west side of its junction with old CA-65 33 Comment
  UCR258194  Centaurea solstitialis George K. Helmkamp, Elizabeth Helmkamp 2012-10-13 20020 Placer Sacramento Valley, Granite Bay, Folsom Lake; Park Road 1.8 miles north of the east end of Douglas Blvd. 146 Comment
  UCR258238  Lasthenia californica George K. Helmkamp, Amy Barnes 2013-3-28 20238 Placer Eastern Sacramento Valley, NW edge of Sheridan, new section of Riosa Road, connecting new CA-65 with old CA-65 43 Comment
  UCR258242  Vicia villosa subsp. villosa George K. Helmkamp, Amy Barnes 2013-3-28 20242 Placer Eastern Sacramento Valley, NW edge of Sheridan, new section of Riosa Road, connecting new CA-65 with old CA-65 43 Comment
  UCR258790  Leontodon taraxacoides subsp. taraxacoides George K. Helmkamp, Elizabeth Helmkamp 2012-10-16 20034 Placer Sierra Nevada Mountains Foothills, CA-49 at junction with Christian Life Way, c. 2 miles south of Grass Valley 755 Comment
  UCR259014  Vicia villosa subsp. villosa George K. Helmkamp, Amy Barnes 2014-3-21 22627 Placer Sacramento Valley, Riosa Road at the east side of its junction with CA-65, just west of Sheridan 33 Comment
  UCR259870  Robinia pseudoacacia George K. Helmkamp, Elizabeth Helmkamp 2013-11-2 22468 Placer Sacramento Valley, West Wise Road just east of the junction with California Lane, north of Lincoln 56 Comment
  UCR260068  Trifolium pratense George K. Helmkamp, Elizabeth Helmkamp 2013-10-14 22417 Placer Sierra Nevada Mountains Foothills, Yankee Jim Road, 3.6 miles northwest of its junction with Foresthill Road 651 Comment
  SBBG128860  Cardamine pensylvanica G. K. Helmkamp, E. A. Helmkamp 2012-2-23 18576 Placer Newcastle, along CA-193 (Newcastle Hwy), 0.1 mi SE of its jct with Langs Hill Rd, W of the jct with I-80, SW of Auburn 279 Comment
  SEINET7249201  Agrostis exarata George K. Helmkamp, Elizabeth Helmkamp 2013-1 Placer Comment
  UCR123373  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Elizabeth Helmkamp 2001-7-7 6880 Plumas Sierra Nevada Mountains, Calif. Hwy 36, 4.3 mi SW of its junction with Calif. Hwy 89, vicinity of Lake Almanor 1463 Comment
  UCR123514  Brodiaea coronaria subsp. coronaria George K. Helmkamp, Elizabeth Helmkamp 2001-7-7 6859 Plumas Sierra Nevada Mountains, Calif. Hwy 89, 2.3 miles SSE of its junction with Calif. Hwy 36, Lake Almanor Region 1357 Comment
  UCR123519  Erigeron lassenianus var. deficiens George K. Helmkamp, Elizabeth Helmkamp 2001-7-7 6860 Plumas Sierra Nevada Mountains, Calif. Hwy 89, 2.3 miles SSE of its junction with Calif. Hwy 36, Lake Almanor Region 1357 Comment
  UCR123904  Lupinus adsurgens George K. Helmkamp, E. A. Helmkamp 2001-7-6 6858 Plumas Sierra Nevada Mountains, Calif. Hwy 89, ESE of Lake Almanor at Crescent Mills 976 Comment
  UCR123995  Chrysanthemum leucanthemum George K. Helmkamp, E. A. Helmkamp 2001-7-6 6852 Plumas Sierra Nevada Mountains, Calif. Hwy 89, ESE of Lake Almanor at Crescent Mills 976 Comment
  CAS-BOT-BC419631  Eschscholzia parishii G. K. Helmkamp; E. A. Helmkamp 1998-2-18 2735 Riverside Colorado Desert: Chuckwalla Mts. 10.6 mi SW of Chuckwalla Valley Rd. on Graham Pass Road Comment
  CLARK-A1045-102  Cryptantha muricata var. jonesii George K. Helmkamp 1977-3-20 Riverside San Jacinto Mountains flats above Deep Canyon; ; Palm Desert 15'Q 1066 Comment
  CLARK-A1045-115  Penstemon antirrhinoides George K. Helmkamp 1977-3-20 Riverside Pinyon Pines area above west edge of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-132  Astragalus palmeri George K. Helmkamp 1977-3-20 Riverside Deep Canyon dry wash of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-146  Eriastrum diffusum George K. Helmkamp 1978-4-1 Riverside Deep Canyon Palm Desert 15'Q Comment
  CLARK-A1045-159  Mimulus pilosus George K. Helmkamp 1978-6-1 Riverside Santa Ana Mountains vernal pool; Wildomar 7.5'Q Comment
  CLARK-A1045-163  Sisyrinchium bellum George K. Helmkamp 1978-6-1 Riverside Santa Ana Mountains vernal pool near creek; Wildomar 7.5' Q Comment
  CLARK-A1045-167  Linanthus androsaceus George K. Helmkamp 1979-4-27 Riverside Santa Ana Mountains Wildomar 7.5' Q Comment
  CLARK-A1045-172  Sisyrinchium bellum George K. Helmkamp 1979-4-27 Riverside Santa Ana Mountains vernal pools; Wildomar 7.5' Q Comment
  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-A1045-223  Monoptilon bellioides George K. Helmkamp 1979-4-18 Riverside Little San Bernardino Mountains 3.5 miles north of Dillon Road; bottom of wash; Lost Horse Mtn. 15'Q Comment
  CLARK-A1045-227  Filago arizonica George K. Helmkamp 1978-4-1 Riverside Cabazon north of Interstate highway 10; disturbed soil; Cabazon 7.5'Q Comment
  CLARK-A1045-289  Stylocline gnaphaloides George K. Helmkamp 1979-5-16 Riverside San Jacinto Mountains along San Jacinto Ridge Road at Oak Spring turnoff; ; Lake Fulmor 7.5'Q 1066 Comment
  CLARK-A1045-322  Tetradymia comosa George K. Helmkamp 1977-3-20 Riverside Morongo Indian Reservation edge of hills, north of the Malki Museum; ; Cabazon 7.5'Q Comment
  CLARK-A1045-875  Lotus strigosus George K. Helmkamp 1977-3-5 Riverside Santa Ana Mountains along Riverside-San Diego County Line at start of Interstate Highway 215; ; southern oak woodland; Temecula 7.5'Q Comment
  CLARK-A1045-880  Cerastium glomeratum George K. Helmkamp 1978-5-2 Riverside Bautista Canyon burn; Hemet 15'Q Comment
  CLARK-A1045-884  Lupinus truncatus George K. Helmkamp 1978-6-1 #1 Riverside Santa Ana Mountains roadside; Wildomar 7.5'Q Comment
  CLARK-A1045-92  Lepidium virginicum var. pubescens George K. Helmkamp 1978-4-27 Riverside San Jacinto Mountains originally ""at Deer Spring""; Lake Fulmor 7.5'Q Comment
  HSC78515  Psathyrotes ramosissima G. K. Helmkamp 1983-3-24 3837 Riverside Chuckwalla Valley, at junction of the Graham Pass & Chuckwalla Springs Rd. 229 Comment
  HSC78582  Mentzelia albicaulis G. K. Helmkamp 1983-3-24 3836 Riverside Chuckwalla Valley, at junction of the Graham Pass & Chuckwalla Springs Rd. 229 Comment
  HSC79245  Salsola australis G. K. Helmkamp 1983-10-8 - 23 Riverside TNC Big Morongo Preserve, S of town of Morongo Valley in Big Morongo Canyon, beside the pipeline road in the middle of the TNC owned area 762 Comment
  RSA614477  Eriogonum thomasii George K. Helmkamp 1998-4-4 3171 Riverside 7.1 mi. N of Hwy I-10 on Eagle Mtn Rd, to the vicinity of the pumping station. 305 Comment
  RSA615340  Hyptis emoryi George K. Helmkamp, E. A. Helmkamp 1998-2-18 2699 Riverside Sonoran (Colorado) Desert Midland Road., 3.8 mi. SE of Midland, Little Maria Mtns. 198 Comment
  RSA628246  Gilia angelensis George K. Helmkamp, E. A. Helmkamp 1997-3-5 1335 Riverside Cabazon; 0.5 mi N of I-10 on Millard Rd. 564 Comment
  RSA645539  Phoradendron libocedri George K. Helmkamp 1995-11-16 s.n. Riverside San Jacinto Mountains. along Hwy 243 at Lake Fulmor. [UTM 10km cell: NH-2E, 4N. Black Mtn.] 1616 Comment
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May 4 2018
  SBBG92381  Chloracantha spinosa G. K. Helmkamp 1989-9-16 s.n. Riverside ca. 0.5 mi S of Interstate 8, W of Blythe at Seeley Rd and St Hwy 78 75 Comment
  SD148159  Lupinus microcarpus var. microcarpus G. K. Helmkamp, E. A. Helmkamp 2001-5-2 6624 Riverside La Panza Range: CA-58 11.2 miles east of Santa Margarita 487 Comment
Read comments
Dec 7 2011
  SD224973  Psorothamnus emoryi G. K. Helmkamp 1998-4-4 3138 Riverside Southern Mojave Desert: junction of CA hwy 62 (Twentynine Palms hwy) & CA hwy 177 (Desert Center-Rice Rd). 456 Comment
  SD225134  Fagonia laevis G. K. Helmkamp, E. A. Helmkamp 1998-2-5 2657 Riverside Indio Hills, 3 mi. E of Thousand Palms & 1.1 mi. N on Amity Rd. 100 Comment
  SEINET2062842  Lupinus arizonicus George Helmkamp 1995-3-16 Riverside Coxcomb Mts, W of Rice Rd., 10.3 mi NE of Desert Center 198 Comment
  SEINET225785  Mentzelia involucrata George K. Helmkamp 1983-4-5 483 -24 Riverside Chuckwalla Mountains, Large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road. 488 Comment
  UCR100573  Abronia villosa George K. Helmkamp 1997-11-1 2517 Riverside Sonoran (Colorado) Desert, Bermuda Dunes, 41st St and Sparky (just east of Washington and south of I-10) 30 Comment
  UCR101789  Cryptantha intermedia George K. Helmkamp, E. A. Helmkamp 1997-3-5 1322 Riverside 2.8 mi SE of Gilman Hot Springs 518 Comment
  UCR101798  Gilia angelensis George K. Helmkamp, E. A. Helmkamp 1997-3-5 1332 Riverside 2.8 mi SE of Gilman Hot Springs 518 Comment
  UCR102912  Cryptantha barbigera George K. Helmkamp 1998-4-4 3174 Riverside Sonoran (Colorado) Desert, 7.1 miles north of Hwy I-10 on Eagle Mtn Rd, to the vicinity of the pumping station 305 Comment
  UCR102918  Chaenactis fremontii George K. Helmkamp 1998-2-5 2636 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Palm Springs, 1.1 mi. west of Calif. Hwy 111 on Tramway Rd. 335 Comment
  UCR102952  Lotus strigosus George K. Helmkamp 1998-4-4 3153 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR103296  Orobanche cooperi George K. Helmkamp 1998-4-4 3176 Riverside Sonoran (Colorado) Desert, 2.3 mi. north of Hwy I-10 on Eagle Mtn Rd. 274 Comment
  UCR103322  Physalis crassifolia George K. Helmkamp, E. A. Helmkamp 1998-2-5 2653 Riverside Sonoran (Colorado) Desert, Indio Hills, 3 mi. east of Thousand Palms & 1.1 mi. N on Amity Rd. 101 Comment
  UCR103330  Cryptantha angustifolia George K. Helmkamp 1998-2-5 2635 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Palm Springs, 1.1 mi. west of Calif. Hwy 111 on Tramway Rd. 335 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
  UCR103576  Eriogonum thomasii George K. Helmkamp, E. A. Helmkamp 1998-1-17 2542 Riverside Sonoran (Colorado) Desert, Mecca Hills, Box Canyon Road ENE of Mecca and on the north side of the Coachella Canal .3 Comment
  UCR103586  Oligomeris linifolia George K. Helmkamp, E. A. Helmkamp 1998-2-18 2715 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR103991  Lotus strigosus George K. Helmkamp 1998-4-3 3086 Riverside Sonoran (Colorado) Desert, West Palm Springs Village area, vic. of Hwy I-10 & Verbenia Ave.; 4 mi. north of Tamarack Rd on Cottonwood Rd. 1280 Comment
  UCR103994  Chaenactis fremontii George K. Helmkamp 1998-4-3 3074 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Snow Creek area north of Mt. San Jacinto; at edge of stream south of Snow Creek Rd at a point 1.4 mi. south of Calif. Hwy 111 396 Comment
  UCR103999  Orobanche cooperi George K. Helmkamp 1998-4-4 3144 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR104003  Mentzelia obscura George K. Helmkamp 1998-4-4 3145 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR104021  Camissonia claviformis George K. Helmkamp, E. A. Helmkamp 1998-2-18 2713 Riverside Sonoran (Colorado) Desert, Midland Road., 3.8 mi. SE of Midland, Little Maria Mtns. 198 Comment
  UCR104037  Lasthenia coronaria George K. Helmkamp 1998-4-3 3084 Riverside Sonoran (Colorado) Desert, West Palm Springs Village area, vic. of Hwy I-10 & Verbenia Ave.; 4 mi. north of Tamarack Rd on Cottonwood Rd. 1280 Comment
  UCR104834  Eriogonum thomasii George K. Helmkamp 1998-4-4 3171 Riverside Sonoran (Colorado) Desert, 7.1 miles north of Hwy I-10 on Eagle Mtn Rd, to the vicinity of the pumping station 305 Comment
  UCR104844  Mentzelia involucrata George K. Helmkamp, E. A. Helmkamp 1998-2-5 2672 Riverside Little San Bernardino Mtns., 3.2 mi. north of junction of Thousand Palms Canyon Road and Dillon Road. 457 Comment
  UCR106419  Camissonia bistorta George K. Helmkamp, A. C. Sanders 1997-3-15 1491 Riverside Skinner Lake, Grassland at base of Bachelor Mtn. and adjoining chapararal. 488 Comment
  UCR110939  Bromus marginatus George K. Helmkamp 1998-6-27 4118 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
  UCR119830  Linum lewisii var. lewisii George K. Helmkamp 1998-6-27 4110 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
  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
  UCR122569  Polygonum hydropiperoides George K. Helmkamp, E. A. Helmkamp 2000-8-29 5985 Riverside Colorado Desert., South of Mecca, where Lincoln St. crosses the Whitewater River, about 0.5 mile from the Salton Sea -67 Comment
  UCR122571  Ludwigia peploides George K. Helmkamp, E. A. Helmkamp 2000-8-29 5981 Riverside Colorado Desert., South of Mecca, where Lincoln St. crosses the Whitewater River, about 0.5 mile from the Salton Sea -67 Comment
  UCR122747  Bernardia myricifolia George K. Helmkamp, E. A. Helmkamp 1998-4-24 3386 Riverside Santa Rosa Mountains, Palms-to-Pines Hwy (Calif. Hwy 74), 1 mi north of Carrizo Rd near Black Hill 1006 Comment
  UCR15523  Chorizanthe polygonoides var. longispina George K. Helmkamp 1978-6-1 s.n. Riverside Santa Rosa Plateau, roadside, 7 miles [west] ot Murrieta Comment
  UCR29848  Chaenactis stevioides George K. Helmkamp 1983-3-24 383- 20 Riverside Sonoran (Colorado) Desert, north base of the Little Chuckwalla Mountains, 1.5 miles east of Graham Pass Road 336 Comment
  UCR30071  Cryptantha maritima George K. Helmkamp 1983-4-5 483 11 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR30075  Monoptilon bellioides George K. Helmkamp 1983-4-5 483- 22 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR30079  Trichoptilium incisum George K. Helmkamp 1983-4-5 483 39 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR58305  Cordylanthus rigidus George K. Helmkamp 1989-10-7 s.n. Riverside San Bernardino Mtns., N edge of the fish hatchery in Whitewater Canyon, north of I-10 700 Comment
  UCR89670  Pennisetum setaceum George K. Helmkamp 1994-3-10 42- 17 Riverside Sonoran (Colorado) Desert, Indio Hills, canyon opening into Coachella Valley, 2 miles east of Thousand Palms on Ramon Road, and 1.3 miles north 122 Comment
  UCR89830  Caesalpinia virgata George K. Helmkamp 1994-3-10 42- 18 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
  UCR89865  Peucephyllum schottii George K. Helmkamp 1994-3-10 42 10 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
  UCR97281  Lupinus concinnus George K. Helmkamp 1986-4-7 760 Riverside Sonoran (Colorado) Desert, S of Morongo Valley. First canyon east of and parallel to Hwy 62 north of Indian Ave. 579 Comment
  SD129245  Chenopodium fremontii G. K. Helmkamp 1989-10-7 79 Riverside San Jacinto Mountains. Depression beside Hwy 243 near Lawlor Lodge, about 2 miles N of Pine Cove. 1600 Comment
  SEINET8194569  Sphaeralcea wrightii George Helmkamp 1999-1 Riverside Comment
  CAS-BOT-BC228558  Amsinckia intermedia George K. Helmkamp; E. A. Helmkamp 2010-3-26 15788 Sacramento Southern Sacramento Valley: Pony Brown Road, 0.7 mi. east of its junction with Ione Road, 2.3 miles NW (338 deg. ) of Eagle's Nest Airport 81 Comment
  CAS-BOT-BC523889  Lagophylla glandulosa George K. Helmkamp; E. A. Helmkamp 2012-10-1 19944 Sacramento Eastern Sacramento Valley: Latrobe Rd, 2.4 mi W of the El Dorado Co. line, N of Rancho Murieta 73 Comment
  CDA35804  Raphanus sativus G. K. Helmkamp, E. A. Helmkamp 2007-3-14 11621 Sacramento Sacramento Valley; edge of Sierra Nevada foothills.; Latrobe Rd. at Michigan Bar Rd., about 3.5 miles west of Latrobe and 0.3 miles west of the El Dorado County line. Comment
  RSA747038  Amsinckia eastwoodiae George K. Helmkamp, E. Helmkamp 2007-3-14 11620 Sacramento 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
  RSA749727  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2008-10-2 14190 Sacramento Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  RSA749731  Holocarpha virgata subsp. virgata George K. Helmkamp, E. A. Helmkamp 2008-10-2 14188 Sacramento Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  SD236419  Kickxia elatine G. K. Helmkamp, E. A. Helmkamp 2008-10-2 14189 Sacramento Sacramento Valley: Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  SD239584  Dittrichia graveolens George K. Helmkamp, E. A. Helmkamp 2011-11-19 18464 Sacramento Eastern Sacramento Valley: Stonehouse Road 0.2 mile north of its junction with CA-16 / Jackson Rd., between the road and Rancho Murieta Housing area. 43 Comment
  SD240988  Acacia dealbata George K. Helmkamp, E. A. Helmkamp 2012-3-3 18587 Sacramento Sacramento Valley/Delta: Twin Cities Road (Co. Rd. E-13) 0.1 mile NE of its junction with I-5 (Bruceville 7.5'Q) 4 Comment
  SD255838  Rumex acetosella George K. Helmkamp, Amy Barnes 2014-4-7 22732 Sacramento Sacramento Valley: Clay East Road, 1 mile east of its junction with CA-104 (Clay 7.5'Q) 52 Comment
  SEINET1908428  Lagophylla ramosissima subsp. ramosissima G. K. Helmkamp, E. A. Helmkamp 2008-1 14197 Sacramento Sacramento Valley, Latrobe Road, 7.4 miles west of Latrobe Comment
  SEINET3271605 Image available Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2007-3-14 11635 Sacramento Sacramento Valley near the edge of Sierra Nevada Mountains foothills; Latrobe Rd about 5.7 miles west of Latrobe and 1.5 miles west of the El Dorado Co. line 110 Comment
  SEINET3282757 Image available Quercus lobata George K. Helmkamp, E. A. Helmkamp 2008-10-30 14283 Sacramento Southern Sacramento Valley; Highway E13 (Twin Cities Road), 3.5 miles west of CA-99. 18 Comment
  SEINET3821621 Image available Triphysaria versicolor subsp. faucibarbata George K. Helmkamp, E. A. Helmkamp 2010-3-26 15780 Sacramento Sacramento Valley/lower Sierra Nevada Foothills, along CA-16 (Jackson Rd.), 0.2 mile west of the Amador County line (Carbondale 7.5' Q) 82 Comment
  SEINET9262003  Bromus hordeaceus George K. Helmkamp, Amy Barnes 2014-1 22724 Sacramento Sacramento Valley: Clay East Road, 1 mile east of its junction with CA-104 (Clay 7.5 Q) 52 Comment
  UCD133249  Holocarpha virgata subsp. virgata G. K. Helmkamp; E. A. Helmkamp 2007-9-9 12909 Sacramento Sacramento Valley: Along Hwy. CA-16, 0.2 mile west of the Amador County line. 91 Comment
  UCR201536  Amaranthus albus George K. Helmkamp, E. A. Helmkamp 2008-10-30 14288 Sacramento Southern Sacramento Valley, along Highway E13 (Twin Cities Road) 4.4 miles west of its junction with CA-99 5 Comment
  UCR205155  Cephalanthus occidentalis var. californicus George K. Helmkamp, E. A. Helmkamp 2008-10-30 14299 Sacramento Southern Sacramento Valley, along CA-104, 0.6 mile west of Clay 24 Comment
  UCR233215  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2010-3-26 15789 Sacramento Southern Sacramento Valley, Pony Brown Road, 0.7 mi. east of its junction with Ione Road, 2.3 miles NW (338 deg. ) of Eagle's Nest Airport 81 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
  UCR237564  Rumex occidentalis George K. Helmkamp, E. A. Helmkamp 2012-2-17 18555 Sacramento Sacramento Valley, Rancho Omochumnes, Indio Drive, 0.2 mile south of its junction with CA-16 (Jackson Rd.) at Latrobe Road 64 Comment
  UCR237569  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2012-2-17 18549 Sacramento Sacramento Valley, along Scott Road, 2.67 miles south of its junction with White Rock Road, south of Folsom Lake and Hwy 50 76 Comment
  UCR237571  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-3-3 18596 Sacramento Sacramento Delta/Valley, Twin Cities Road (Co. Rd. E-13) at Sourgrass Slough, NE of Locke 14 Comment
  UCR237581  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-3-3 18583 Sacramento Sacramento Valley/Delta, Twin Cities Road (Co. Rd. E-13), 0.1 mile NE of its junction with I-5 5 Comment
  UCR241265  Baccharis pilularis George K. Helmkamp, E. A. Helmkamp 2012-10-3 19950 Sacramento Southeast Sacramento Valley, Sacramento State Aquatic Center south of the American River, 0.1 mile east of Hazel Ave. 49 Comment
  UCR121602  Lithophragma parviflorum var. parviflorum George K. Helmkamp, E. A. Helmkamp 2002-4-22 7427 San Benito San Andreas rift zone, Rabbit Valley, along Calif. Hwy 25; 23.7 mi north of Calif. Hwy 198 549 Comment
  UCR121608  Lithophragma affine George K. Helmkamp, E. A. Helmkamp 2002-4-22 7581 San Benito San Andreas rift zone, 22.4 mi north of Monterey Co. line along Calif. Hwy 25; Bear Valley just north of junction of Calif. Hwy 146, general vicinity of Pinnacles 427 Comment
  UCR122624  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2001-5-29 6690 San Benito San Andrea Rift Zone, Los Gatos Rd. NW of Coalinga at the San Benito Co. line. 793 Comment
  UCR122902  Hesperolinon disjunctum George K. Helmkamp, E. A. Helmkamp 2001-5-29 6692 San Benito San Andrea Rift Zone, Los Gatos Rd. NW of Coalinga at the San Benito Co. line. 793 Comment
  UCR122908  Cirsium occidentale var. venustum George K. Helmkamp, E. A. Helmkamp 2001-5-29 6701 San Benito Coast Range, San Andrea Rift Zone, Coalinga Road. about 2 miles southeast of Hernandez [7.26 mi southeast of Hernandez Reservoir] 732 Comment
  UCR122910  Galium porrigens var. porrigens George K. Helmkamp, E. A. Helmkamp 2001-5-29 6706 San Benito South Coast Range, Gabilan Range, 7.1 mi. south of San Juan Bautista on Hwy G-1 488 Comment
  UCR122987  Calochortus venustus George K. Helmkamp, E. A. Helmkamp 2001-5-30 6731 San Benito Gabilan Range, 11.0 mi south of San Juan Bautista on Hwy G-1; entrance to Fremont Peak State Park 800 Comment
  UCR122990  Rupertia physodes George K. Helmkamp, E. A. Helmkamp 2001-5-29 6715 San Benito South Coast Range, Gabilan Range, 7.1 mi. south of San Juan Bautista on Hwy G-1 488 Comment
  UCR123206  Micropus californicus var. californicus George K. Helmkamp, E. A. Helmkamp 2002-4-22 7584 San Benito San Andreas rift zone, 22.4 mi north of Monterey Co. line along Calif. Hwy 25; Bear Valley just north of junction of Calif. Hwy 146, general vicinity of Pinnacles 427 Comment
  CLARK-A1045-193  Camissonia campestris George K. Helmkamp 1979-4-13 San Bernardino Mojave Desert along CA highway 58, west edge of Barstow; Barstow 7.5'Q Comment
  CLARK-A1045-197  Dalea fremontii var. minutifolia George K. Helmkamp 1978-5-6 San Bernardino Mojave Desert west of Kingston Range; ; Horsethief Springs 15'Q 1066 Comment
  CLARK-A1045-381  Madia minima George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains Keller Peak 7.5'Q Comment
  CLARK-A1045-422  Hymenopappus filifolius var. lugens George K. Helmkamp 1979-6-5 San Bernardino Fawnskin 1.5 miles east of Fawnskin; dry slope, north of State Highway 38; yellow pine forest; ; Fawnskin 7.5'Q 2133 Comment
  CLARK-A1045-476  Mimulus exiguus George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains north of Saragosa Spring and northwest of Baldwin Lake; moist seep about 300 yards north of Forest Service road 3N08, along 3N66Y; moist seep; Big Bear City 7.5'Q Comment
  CLARK-A1045-525  Erigeron parishii George K. Helmkamp 1979-6-5 #3 San Bernardino San Bernardino Mountains limestone slope above Spring; ; Big Bear City 7.5'Q 1371 Comment
  CLARK-A1045-549  Eriogonum saxatile 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-A1045-556  Haplopappus cooperi George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains 5.7 miles east of Cajon Junction, off Interstate Highway 15; Cajon 7.5'Q Comment
  CLARK-A1045-568  Lupinus breweri George K. Helmkamp 1979-6-3 San Bernardino San Bernardino Mountains roadside; yellow pine forest; ; Keller Peak 7.5'Q Comment
  CLARK-A1045-598  Franseria cordifolia George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert Flynn 15'Q Comment
  CLARK-A1045-613  Eriogonum nidularium George K. Helmkamp 1977-5-14 San Bernardino Mesquite Mountains 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-A1045-628  Eriogonum reniforme George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert south base of Kelso sand dunes; ; Flynn 15'Q; Glasgow 7.5' Q 761 Comment
  CLARK-A1045-665  Eriogonum pusillum George K. Helmkamp 1977-5-29 San Bernardino Cima Kelso 15' Q; Mid Hills 7.5' Q Comment
  CLARK-A1045-686  Dyssodia pentachaeta George K. Helmkamp 1978-5-6 San Bernardino Mojave Desert Kingston Road; Clark Mt 15'Q Comment
  CLARK-A1045-695  Lomatium dissectum var. multifidum George K. Helmkamp 1977-7-5 San Bernardino San Bernardino Mountains north of State highway 38 at Fish Creek; ; Moonridge 7.5'Q 2133 Comment
  CLARK-A1045-699  Lupinus excubitus subsp. austromontanus George K. Helmkamp 1977-7-5 San Bernardino San Bernardino Mountains north of State highway 38 at Fish Creek; ; Moonridge 7.5'Q 2133 Comment
  CLARK-A1045-705  Microsteris gracilis George K. Helmkamp 1977-6-1 San Bernardino Verdemont at the Pet Cemetery at the north end of Kendall Drive [between Cable Creek and Interstate Highway 15]; San Bernardino N 7.5' Q Comment
  CLARK-A1045-712  Astragalus mohavensis George K. Helmkamp 1978-5-8 San Bernardino Mojave Desert southwest slope, one third of the way up; Ord Mts 15'Q Comment
  CLARK-A1045-735  Phacelia crenulata George K. Helmkamp 1978-5-1 San Bernardino Mojave Desert Ord Saddle; Ord Mts 15'Q Comment
  CLARK-A1045-775  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-A1045-780  Cercocarpus ledifolius George K. Helmkamp 1977-10-22 San Bernardino San Bernardino Mountains beside State Highway 38 in yellow pine forest; ; Onyx Peak 7.5'Q 2499 Comment
  CLARK-A1045-784  Forestiera neomexicana George K. Helmkamp 1977-5-14 San Bernardino New York Mountains south end of New York Mountains; Mid Hills 15'Q Comment
  CLARK-A1045-805  Notholaena parryi George K. Helmkamp 1978-5-6 #2 San Bernardino Kingston Range southeast base of Kingston Range, limestone slope; ; Kingston Peak 15'Q 1371 Comment
  CLARK-A1045-812  Chorizanthe brevicornu George K. Helmkamp 1977-5-14 San Bernardino Mesquite Mountains Clark Mt. 15' Q Comment
  CLARK-A1045-835  Berberis haematocarpa George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains east of Pass; ; Clark Mt. 15'Q 1066 Comment
  HSC79076  Lepidium lasiocarpum G. K. Helmkamp 1984-4-29 - 28 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
  HSC79170  Epilobium ciliatum subsp. ciliatum G. K. Helmkamp 1984-5-1 - 4 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
  HSC79213  Euthamia occidentalis G. K. Helmkamp 1983-10-8 - 13 San Bernardino Big Morongo Preserve of The Nature Conservancy, Morongo Valley, near the house in the San Bernardino Co. owned area. 762 Comment
  HSC79214  Baccharis salicifolia G. K. Helmkamp 1984-4-29 - 8 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
  HSC79226  Stephanomeria pauciflora G. K. Helmkamp 1983-10-8 - 40 San Bernardino TNC Big Morongo Preserve, S of town of Morongo Valley in Big Morongo Canyon, beside the pipeline road in the middle of the TNC owned area. 762 Comment
  HSC79249  Chenopodium californicum G. K. Helmkamp 1984-4-20 52 San Bernardino TNC Big Morongo Preserve, S of town of Morongo Valley in Big Morongo Canyon, beside pipeline road in upper part of TNC area 765 Comment
  HSC83383  Stachys albens G. K. Helmkamp 1985-6-26 598 San Bernardino Along Willow Trail opposite Cottonwood Trail platform 762 Comment
  RSA492920  Encelia virginensis var. virginensis 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
  RSA567556  Bouteloua gracilis George K. Helmkamp 1993-9-22 36 -3 San Bernardino 16.4 miles up Burns Canyon from junction of Pipes Canypn and Pioneer Town Roads. 2195 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
  RSA628612  Psorothamnus fremontii George K. Helmkamp, E. A. Helmkamp 1998-5-3 3504 San Bernardino Mesquite Mtns, 3 mi. W of the Nevada border at Sandy Valley. 1067 Comment
  RSA713331  Carex senta George K. Helmkamp 1996-6-11 1128 San Bernardino San Bernardino Mtns, along SN11 southwest of City of Big Bear Lake. 0.5 mile west of Mill Creek Road. 2256 Comment
  SBBG103901  Leptosiphon chrysanthus subsp. chrysanthus G. K. Helmkamp 1993-4-24 San Bernardino 5 mi N of Kelso, crossing Kelbaker Rd 914 Comment
  SBBG81552  Eriogonum nidularium G. K. Helmkamp 1985-6-2 2 San Bernardino town of Morongo Valley, 0.5 mi N of corner of Vista and Pinyon Streets 822 Comment
  SD132300  Pectocarya linearis G. K. Helmkamp 1984-4-20 51 San Bernardino Big Morongo Preserve, south of town of Morongo Valley in Big Morongo Canyon, Little San Bernardino Mountains. Desert Wash Trail 760 Comment
  SD144481  Cryptantha decipiens G. K. Helmkamp 1997-4-20 1642 San Bernardino Morongo Valley, vacant lot at Vista Dr. near Pinyon Ave. 1006 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
  SD225133  Phoradendron macrophyllum George Helmkamp 1995-11-4 San Bernardino Big Morongo Creek in the Nature Preserve. 776 Comment
  SEINET2042016 Image available Cryptantha nevadensis George Helmkamp, E. A. Helmkamp 1998-3-16 2861 San Bernardino Mohave Desert; N of CA-62 between Joshua Tree & 29-Palms; N on Leer Ave & 0.9 mi E on Amboy Rd. 732 Comment
  SEINET2042027 Image available Malacothrix glabrata George Helmkamp, E. A. Helmkamp 2001-3-30 6378 San Bernardino Mojave Desert; CA-62, 16.2 mi E of Utah Tr. (29 Palms) near Dale Lake. 366 Comment
  SEINET2042028 Image available Dalea mollis George Helmkamp, E. A. Helmkamp 2001-3-30 6379 San Bernardino Mojave Desert; CA-62, 16.2 mi E of Utah Tr. (29 Palms) near Dale Lake. 366 Comment
  SEINET270100  Pulicaria paludosa G. Helmkamp 1995-12-6 San Bernardino Big Morongo Wildlife Preserve ; Riparian marsh beside the Willow Trail 777 Comment
  SEINET270120  Artemisia ludoviciana subsp. albula G. Helmkamp 1993-9-22 34 -11 San Bernardino 6.7 miles up Burns Canyon from the junction of Pioneer Town and Pipes Canyon roads 1524 Comment
  SEINET273132  Chaenactis stevioides G. K. Helmkamp, EA Helmkamp 1998-2-26 2756 San Bernardino Mojave Desert; East Cronise Dry lake. 0.2 mi S of I-15 on Basin Rd 332 Comment
  UC2015608  Desmodium tortuosum George Helmkamp 1995-10-23 San Bernardino Mojave Desert: Yucca Valley. Weed in garden at 979 Old Woman Springs Road (Hwy 247), 8.2 miles N of Hwy 62 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
  UCD129502  Baileya pauciradiata G. K. Helmkamp; E. A. Helmkamp 2001-3-30 6395 A San Bernardino Mojave Desert: 16.2 miles east of Utah Trail (29 Palms) near Dale Lake. 366 Comment
  UCD140754  Carex praegracilis G. Helmkamp 1985-5-10 481 San Bernardino at entrance to Big Morongo Nature Conservancy Preserve, SE of town of Morongo Valley. 762 Comment
  UCR101035  Phacelia crenulata var. ambigua George K. Helmkamp, E. A. Helmkamp 1998-4-9 3310 San Bernardino Mojave Desert, 2.4 mi. south of Barstow on Calif. hwy 247. 793 Comment
  UCR101045  Streptanthella longirostris George K. Helmkamp, E. A. Helmkamp 1998-4-9 3301 A San Bernardino Mojave Desert, NW of Barstow; 2.2 mi. NE of Calif. Hwy 58 on unnamed dirt road 2.8 mi. west of Waterman Rd 701 Comment
  UCR101123  Chaenactis stevioides George K. Helmkamp, E. A. Helmkamp 1998-2-26 2756 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101618  Chaenactis carphoclinia George K. Helmkamp, E. A. Helmkamp 1998-2-26 2776 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
  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
  UCR101658  Camissonia boothii subsp. desertorum George K. Helmkamp, E. A. Helmkamp 1998-2-26 2795 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
  UCR101669  Chorizanthe brevicornu var. brevicornu George K. Helmkamp, E. A. Helmkamp 1998-2-26 2791 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
  UCR102958  Rafinesquia neomexicana George K. Helmkamp, E. A. Helmkamp 1998-3-16 2819 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
  UCR102964  Palafoxia arida var. arida George K. Helmkamp 1998-4-4 3109 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
  UCR102969  Phacelia campanularia subsp. vasiformis George K. Helmkamp, E. A. Helmkamp 1998-3-16 2825 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
  UCR102971  Chaenactis fremontii George K. Helmkamp, E. A. Helmkamp 1998-3-16 2823 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
  UCR102981  Rafinesquia neomexicana George K. Helmkamp 1998-3-30 3024 San Bernardino Mojave Desert, SE side of Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.4 mi. SE of Amboy Rd. 366 Comment
  UCR102992  Simmondsia chinensis George K. Helmkamp, E. A. Helmkamp 1998-3-16 2841 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
  UCR103328  Physalis crassifolia George K. Helmkamp 1998-3-30 3044 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
  UCR103560  Schismus barbatus George K. Helmkamp, E. A. Helmkamp 1998-1-10 2561 San Bernardino Mojave Desert, Morongo Valley, residence at 49038 Vista Drive 808 Comment
Read comments
Jun 15 2009
  UCR103595  Agrostis scabra George K. Helmkamp 1993-9-22 37- 11 San Bernardino San Bernardino Mountains, Round Valley Road c. 0.5 mi east of Calif. Hwy 38, 8 mi SE of Big Bear City 2378 Comment
  UCR104047  Oligomeris linifolia George K. Helmkamp 1998-4-4 3108 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
  UCR104781  Gilia modocensis George K. Helmkamp, E. A. Helmkamp 1997-4-9 1505 San Bernardino Mojave Desert, East Mojave Desert, east of Goffs. 915 Comment
  UCR104792  Pectocarya heterocarpa George K. Helmkamp 1998-4-4 3117 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
  UCR104798  Rafinesquia neomexicana George K. Helmkamp 1998-4-4 3120 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
  UCR116693  Eriogonum parishii George K. Helmkamp 1974-7-6 s.n. San Bernardino San Bernardino Mtns., Calif. Hwy 38 near Heart Bar State Park 2195 Comment
  UCR118288  Lupinus shockleyi George K. Helmkamp, E. A. Helmkamp 1998-4-18 3345 San Bernardino Mojave Desert, north side of Dumont Sand Dunes, 5.2 miles east of Calif. Hwy 127 305 Comment
  UCR118291  Amsinckia tessellata var. tessellata George K. Helmkamp, E. A. Helmkamp 1998-4-19 3362 San Bernardino Mojave Desert, northwest side of East Cronese Lake, about 15 miles west of Baker 335 Comment
  UCR118325  Camissonia campestris subsp. campestris George K. Helmkamp, E. A. Helmkamp 1998-4-18 3329 San Bernardino Central Mojave Desert., 18 mi ESE of Baker on Kelbaker Rd. 884 Comment
  UCR121847  Marah macrocarpa var. macrocarpa George K. Helmkamp, E. A. Helmkamp 2001-3-24 6322 San Bernardino East foothills, San Bernardino Mtns, Alluvial fan along Pioneertown Rd., 0.8 mi NW of Calif. Hwy 62 1098 Comment
  UCR122581  Cryptantha dumetorum George K. Helmkamp, E. A. Helmkamp 2001-3-31 6331 San Bernardino Eastern Mojave Desert, Goffs Rd, 8.1 mi east of Goffs 610 Comment
  UCR122645  Erodium texanum George K. Helmkamp, E. A. Helmkamp 1998-3-16 2845 San Bernardino Mojave Desert, north of Calif. Hwy 62 between Joshua Tree and 29 Palms; north on Leer Ave and 0.9 mile E on Amboy Rd. 732 Comment
  UCR122703  Anisocoma acaulis George K. Helmkamp, E. A. Helmkamp 1998-3-16 2844 San Bernardino Mojave Desert, north of Calif. Hwy 62 between Joshua Tree and 29 Palms; north on Leer Ave and 0.9 mile E on Amboy Rd. 732 Comment
  UCR122816  Salvia columbariae George K. Helmkamp, E. A. Helmkamp 2001-3-31 6371 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122950  Mentzelia albicaulis George K. Helmkamp, E. A. Helmkamp 2001-3-30 6461 San Bernardino Eastern Mojave Desert, 13.5 mi north of Calif. Hwy 62 along US-95 then 0.1 mi E 274 Comment
  UCR122965  Plantago ovata George K. Helmkamp, E. A. Helmkamp 2001-3-30 6448 San Bernardino Eastern Mojave Desert, 13.5 mi north of Calif. Hwy 62 along US-95 then 0.1 mi E 274 Comment
  UCR123976  Pectocarya heterocarpa George K. Helmkamp, E. A. Helmkamp 2001-3-30 6398 San Bernardino Mojave Desert, CA Hwy 62, 16.2 mi east of Utah Trail (Twentynine Palms) near Dale Lake 366 Comment
  UCR123986  Plantago ovata George K. Helmkamp, E. A. Helmkamp 2001-3-30 6385 San Bernardino Mojave Desert, CA Hwy 62, 16.2 mi east of Utah Trail (Twentynine Palms) near Dale Lake 366 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
  UCR133515  Eriogonum davidsonii George K. Helmkamp 1993-9-18 29- 09 San Bernardino Mojave Desert, Morongo Valley, canyon at W end of Palo Verde Road, l mi west of Juniper Ave, between Big Morongo Canyon and Dry Morongo Canyon 1070 Comment
  UCR136212  Chenopodium fremontii George K. Helmkamp, E. A. Helmkamp 1999-9-30 5307 San Bernardino East side San Bernardino Mountains., 7.3 mi up Burns cyn Rd from Rimrock Rd (NW of Pioneertown) 1799 Comment
  UCR136218  Artemisia dracunculus George K. Helmkamp, E. A. Helmkamp 1999-9-30 5297 San Bernardino San Bernardino Mountains, 5.7 miles up Burns Cyn Rd from Rimrock Rd., NW of Pioneertown 1768 Comment
  UCR14385  Achillea millefolium George K. Helmkamp 1974-7-9 s.n. San Bernardino San Bernardino Mtns., along Calif. Hwy 38, east of Heart Bar State Park 2287 Comment
  UCR14389  Potentilla rivalis var. millegrana George K. Helmkamp 1974-7-9 s.n. San Bernardino San Bernardino Mtns., along Santa Ana River, 2 mi. below Calif. Hwy 38 1829 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
  UCR14659  Cryptantha virginensis George K. Helmkamp 1975-6-6 s.n. San Bernardino Eastern Mojave Desert, Clark Mountain [area, Mescal Range], Mountain Pass, 0.5 mi south of Interstate 15 1463 Comment
  UCR15380  Astragalus lentiginosus var. fremontii George K. Helmkamp 1977-4-24 s.n. San Bernardino Mojave Desert, Beside Salt Wells area south of Trona 671 Comment
  UCR160729  Gilia George K. Helmkamp, E. A. Helmkamp 1998-3-16 2843 San Bernardino Mojave Desert, north of Calif. Hwy 62 between Joshua Tree and 29 Palms; north on Leer Ave and 0.9 mile E on Amboy Rd. 732 Comment
  UCR23269  Samolus parviflorus George K. Helmkamp 1981-8-1 s.n. San Bernardino Southern Mojave Desert/Transverse Range, Big Morongo Reserve, Big Morongo Canyon. At the old mill site 793 Comment
  UCR26751  Penstemon incertus George K. Helmkamp 1982-5-23 s.n. San Bernardino San Bernardino Mtns/ Mojave Desert, burn area where Pipes Canyon Road meets Pioneertown Road 1311 Comment
  UCR37650  Lotus strigosus George K. Helmkamp 1984-4-29 A- 16 San Bernardino Little San Bernardino Mtns., Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters 701 Comment
  UCR39267  Chorizanthe coriacea George K. Helmkamp, D. Hoover 1985-3-26 146 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Big Morongo Preserve of the Nature Conservancy. south of Morongo Valley, small canyon east of the pipeline rd & the upper Desert Wash Trail. 777 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
  UCR40285  Atriplex lentiformis George K. Helmkamp 1985-8-16 660 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Big Morongo Preserve. The Nature Conservancy. south of Morongo Valley. Introduced at the site of the ranger's old residence at the parking lot 762 Comment
  UCR41071  Eriogonum brachyanthum George K. Helmkamp 1985-6-21 850621- 01 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Town of Morongo Valley. 0.5 miles north of corner of Vista and Pinyon Streets 823 Comment
  UCR41079  Polygonum ramosissimum George K. Helmkamp 1985-9-17 712 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, S of Morongo Valley, the entrance road just past the parking lot, Big Morongo Preserve of the Nature Conservancy 762 Comment
  UCR51303  Eriogonum trichopes 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
  UCR51304  Eriophyllum wallacei 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
  UCR78027  Aster occidentalis George K. Helmkamp 1993-9-22 38- 03 San Bernardino San Bernardino Mtns., Meadow at junction of Burns Canyon and Round Valley Roads [near Rose Mine] 2073 Comment
  UCR78028  Malacothamnus fremontii George K. Helmkamp 1993-9-22 35- 16 San Bernardino San Bernardino Mtns., 14.4 mi up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 2073 Comment
  UCR79277  Salsola tragus George K. Helmkamp 1993-9-12 22- 11 San Bernardino San Bernardino Mtns, Burns Canyon, in the vicinity of Burns Spring 1524 Comment
  UCR79278  Machaeranthera canescens George K. Helmkamp 1993-9-22 36 -1 San Bernardino San Bernardino Mtns, 16.4 mi. up Burns Canyon from junction of Pipes Canyon and Pioneertown Roads 2195 Comment
  UCR79294  Eriogonum plumatella George K. Helmkamp 1993-9-12 23- 16 San Bernardino San Bernardino Mtns., edge of Burns Canyon 1375 Comment
  UCR87531  Phacelia ivesiana 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
  UCR91936  Kelloggia galioides George K. Helmkamp 1996-6-11 1141 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR91953  Glyceria elata George K. Helmkamp 1996-6-11 1135 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR91954  Puccinellia nuttalliana George K. Helmkamp 1996-6-11 1117 San Bernardino San Bernardino Mtns, at the SW end of Baldwin Lake 1433 Comment
  UCR93397  Astragalus lentiginosus var. variabilis George K. Helmkamp 1993-4-24 s.n. San Bernardino Eastern Mojave Desert, bajada between the Granite Mtns & Kelbaker Rd, 5.1 mi. north of Hwy I-40 1220 Comment
  UCR93398  Lotus rigidus George K. Helmkamp 1993-4-24 s.n. San Bernardino Northeastern Mojave Desert, along Smith Talc Road, c. 9 miles east of Tecopa [Pass?, Inyo Co.; probably after Sm. T. Rd. transition to Excelsior Mine Rd.] 1067 Comment
  UCR98126  Astragalus lentiginosus var. fremontii George K. Helmkamp, E. A. Helmkamp 1997-4-29 1666 San Bernardino Mojave Desert, Kingston Mtns, Smith Talc Rd. west of the summit, between Beck Spring & Crystal Spring 1350 Comment
  UCR98451  Carex douglasii George K. Helmkamp 1985-4-18 351 San Bernardino Mojave Desert, Morongo Canyon, SE of Morongo Valley. 762 Comment
  VVC953  Oenothera primiveris subsp. bufonis G. K. Helmkamp 1998-4-9 3303 San Bernardino Mojave Desert, NW of Barstow; 2.2 mi. NE of CA Hwy 58 on unnamed dirt road 2.8 mi. W of Waterman Rd 701 Comment
  CLARK-A1045-481  Carex athrostachya George K. Helmkamp 1979-6-22 San Bernardino San Bernardino Mountains north of Forest Service road 3N08, .8 mile east of Van Dusen Canyon Road; drying pool; Big Bear City 7.5'Q Comment
  RSA564311  Boerhavia triquetra George K. Helmkamp 1993-9-18 30 -13 San Bernardino Canyon at west end of Palo Verde, 1 mi west of Juniper Ave. in Morongo Valley. Canyon between Big Morongo Canyon and Dry Morongo Canyon. 1067 Comment
  UCD114595  Caulanthus lasiophyllus G. Helmkamp 1987-3-24 s.n. San Bernardino SSW base of Fremont Peak, about 6.5 miles E of U.S. Highway 395. 975 Comment
  CLARK-A1045-1256  Chorizanthe fimbriata George K. Helmkamp 1979-6-6 San Diego Julian ca. 4 miles east of Julian along State Highway 78; dry bank; ; Julian 7.5'Q 914 Comment
  CLARK-A1045-1272  Calochortus weedii George K. Helmkamp 1979-6-6 San Diego Pala Creek beside Creek, 3 miles north of Pala; Pechanga 7.5'Q Comment
  CLARK-A1045-1541  Euphorbia eriantha George K. Helmkamp 1978-3-17 San Diego Anza-Borrego Desert State Park Bisnaga Alta Wash; Sweeney Pass 7.5'Q Comment
  CLARK-A1045-910  Bromus tectorum George K. Helmkamp 1977-3-24 San Diego Cleveland Mountains roadside; Beauty Mountain 7.5'Q Comment
  RSA627389  Bahiopsis laciniata George K. Helmkamp, E. A. Helmkamp 1999-4-16 4672 San Diego Japatul Rd 1/2 mi SE of Loveland Reservoir. 488 Comment
  RSA628387  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 1999-4-17 4693 San Diego Honey Springs Rd 1.9 mi W of California-94 366 Comment
  RSA628390  Lasthenia gracilis George K. Helmkamp, E. A. Helmkamp 1999-4-15 4641 San Diego Barrett Hill Rd off of Hwy-79, ca 6.5 mi SW of Warner Hot Springs 838 Comment
  RSA628437  Verbena menthifolia George K. Helmkamp, E. A. Helmkamp 1999-2-26 4624 San Diego Chula Vista: W end of E Street between I-5 and San Diego Bay. In parking lot for Chula Vista Preserve. 8 Comment
  UCR114244  Atriplex semibaccata George K. Helmkamp 1997-7-29 2235 San Diego South Coast, San Onofre State Beach 30 Comment
  UCR114249  Isocoma menziesii var. vernonioides George K. Helmkamp 1997-7-29 2241 San Diego South Coast, San Onofre State Beach 30 Comment
  UCR114623  Ceanothus perplexans George K. Helmkamp, E. A. Helmkamp 1999-4-15 4649 San Diego Peninsular Ranges, c. 5 mi NE of Alpine. Old Viejas Grade at the E side of Viejas Mtn., 0.6 mi east of the Viejas Indian Reservation 854 Comment
  UCR115803  Brickellia californica George K. Helmkamp, E. A. Helmkamp 2000-10-17 6225 San Diego Peninsular Range, Lawrence Welk Commercial Complex, c. 1.5 miles west of the Oat Hills, and south of Moosa Canyon 299 Comment
  UCR130655  Cistus villosus George K. Helmkamp, E. A. Helmkamp 1999-4-15 4664 San Diego Peninsular Ranges, c. 5 mi NE of Alpine. Old Viejas Grade at the E side of Viejas Mtn., 0.6 mi east of the Viejas Indian Reservation 854 Comment
  UCR130660  Festuca myuros var. hirsuta George K. Helmkamp, E. A. Helmkamp 1999-4-16 4668 a San Diego Cuyamaca Mtns., Old Viejas Grade alongside creek 1.5 mi NW of Descanso. 1098 Comment
  UCR130676  Gilia clivorum George K. Helmkamp, E. A. Helmkamp 1999-4-15 4639 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
  UCR130686  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 1999-4-17 4680 San Diego Peninsular Ranges, Barrett-Smith Rd between Barrett Junction & Barrett School Rd. NE of Calif. Hwy 94 268 Comment
  UCR130695  Spergula arvensis subsp. arvensis George K. Helmkamp, E. A. Helmkamp 1999-4-17 4690 San Diego Dulzura Creek Watershed., Honey Springs Rd 1.9 mi west of California-94 366 Comment
  UCR130701  Lathyrus vestitus subsp. alefeldii George K. Helmkamp, E. A. Helmkamp 1999-4-17 4675 San Diego Peninsular Ranges, Barrett-Smith Rd between Barrett Junction & Barrett School Rd. NE of Calif. Hwy 94 268 Comment
  UCR94636  Croton setiger George K. Helmkamp 1996-9-11 1175 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
  UCR96277  Eragrostis mexicana subsp. virescens George K. Helmkamp 1996-9-11 1185 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
  CDA25628  Epilobium brachycarpum G. K. Helmkamp, E. A. Helmkamp 2008-10-9 14229 San Joaquin San Joaquin Valley; Junction of Collier Road and CA-88, 1.1 miles north of the junction of CA-12 and CA-88, northeast of Lodi. Comment
  SD240964  Stellaria pallida George K. Helmkamp, E. A. Helmkamp 2012-4-7 18726 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
  SEINET3828534  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2011-1 18477 San Joaquin Northeastern San Joaquin Valley: Along Johnson Road, 0.8 mile south of its junction with CA-12 NE of Lockeford, SW of Camanche Reservoir (Clements 7.5') 53 Comment
  SEINET4560755  Brassica rapa George K. Helmkamp, E. A. Helmkamp 2011-1 17070 San Joaquin Upper San Joaquin Valley: between Lodi and Galt, Forest Lake Road just west of CA-99. 27 Comment
  UCR194724  Panicum capillare George K. Helmkamp, E. A. Helmkamp 2007-10-13 13095 San Joaquin Northern San Joaquin Valley, along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road 37 Comment
  UCR194985  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2007-10-13 13081 San Joaquin Northern San Joaquin Valley, along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road 37 Comment
  UCR201926  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2008-10-9 14229 San Joaquin San Joaquin Valley, junction of Collier Road and CA-88, 1.1 miles north of the junction of CA-12 and CA-88, NE of Lodi 35 Comment
  UCR232202  Crassula tillaea George K. Helmkamp, E. A. Helmkamp 2011-3-12 17075 San Joaquin Upper San Joaquin Valley, between Lodi and Galt, Forest Lake Road just west of CA-99 27 Comment
  UCR232265  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2011-3-12 17077 San Joaquin Upper San Joaquin Valley, Buena Vista Road, 0.1 mile east of its junction with CA-88 67 Comment
  UCR232290  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2011-3-29 17095 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
  UCR238402  Hordeum murinum subsp. murinum George K. Helmkamp, E. A. Helmkamp 2012-4-7 18716 San Joaquin San Joaquin Valley, along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden 52 Comment
  UCR238408  Sisymbrium officinale George K. Helmkamp, E. A. Helmkamp 2012-4-7 18723 San Joaquin San Joaquin Valley, along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden 52 Comment
  UCR238410  Urtica urens George K. Helmkamp, E. A. Helmkamp 2012-4-7 18725 San Joaquin San Joaquin Valley, along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden 52 Comment
  UCR253541  Setaria sphacelata George K. Helmkamp, Elizabeth Helmkamp 2012-10-26 20084 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
  UCR253616  Lepidium latifolium George K. Helmkamp, Elizabeth Helmkamp 2012-10-26 20074 San Joaquin San Joaquin Valley, Rock Creek, at East Sonora Road, 1.3 miles southeast of CA-4 50 Comment
  UCR253790  Brassica geniculata George K. Helmkamp, Elizabeth Helmkamp 2012-10-26 20060 San Joaquin San Joaquin Valley, along Hwy CA-26, 0.7 mile northeast of Bellota 50 Comment
  CDA4383  Vicia villosa subsp. varia G. K. Helmkamp, E. A. Helmkamp 1998-5-19 3869 San Luis Obispo Santa Lucia Range. Southwest of Paso Robles along CA-46 at York Mountain Rd. Comment
  CDA4392  Vicia sativa subsp. sativa G. K. Helmkamp 2004-2-11 8287 San Luis Obispo Central Coast; Nipomo Mesa, Pomeroy Rd, 1.1 mi N of Willow Rd. Comment
  CLARK-A1045-1330  Prunus fasciculata var. punctata George K. Helmkamp 1978-4-22 San Luis Obispo Morro Bay Baywood Park, sandy slope; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1369  Hedypnois cretica George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road, 3 miles southeast of Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1370  Pterostegia drymarioides George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road, pasture; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1381  Lotus strigosus George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road west of Morro Bay; Morro Bay S 7.5'Q Comment
  IRVC28957  Lotus strigosus G. K. Helmkamp 2003-8-16 8079 San Luis Obispo Nipomo Mesa atWillow Road, 0.5 mi E of CA-1, near Black Lake golf course Central Coast 76 Comment
  IRVC29049  Polygonum punctatum G. K. Helmkamp 2003-10-8 8192 San Luis Obispo base of Nipomo Mesa 0.25 mi SW of Halcyon Rd along an unnamed road near the railroad crossing Central Coast 15 Comment
  RSA601206  Malacothamnus palmeri var. involucratus George K. Helmkamp 1996-9-22 1215 San Luis Obispo Along San Simeon Creek, ca. 0.2 mi E of CA-1 Hwy. (Rocky creek bed) 6 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
  RSA614567  Platystemon californicus var. californicus George K. Helmkamp, E. A. Helmkamp 1997-3-8 1424 San Luis Obispo Along CA-58 W of Navajo Creek (W of Carrizo Plain) 549 Comment
  RSA614979  Astragalus didymocarpus George K. Helmkamp, E. A. Helmkamp 1998-4-8 3229 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with CA hwy 33 (roughly WNW of Maricopa). 579 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
  SBBG128550  Arctostaphylos crustacea G. K. Helmkamp 1993-3-5 s.n. San Luis Obispo just N of Montana de Oro State Park 30 Comment
  SBBG92143  Symphyotrichum chilense G. K. Helmkamp 1989-8-6 San Luis Obispo Toro Cyn Rd, E of Hwy 1, just N of Cayucos 121 Comment
  SD148088  Rumex acetosella G. K. Helmkamp, E. A. Helmkamp 2000-6-15 5682 San Luis Obispo Central Coast; Coastal strand between Los Osos and sand dunes W of the end of Howard Street 14 Comment
  SD148096  Linanthus californicus G. K. Helmkamp, E. A. Helmkamp 2001-5-2 6608 San Luis Obispo La Panza Range; CA-58, 4.5 miles east of Santa Margarita. 334 Comment
  SD148218  Stephanomeria exigua subsp. deanei G. K. Helmkamp, E. A. Helmkamp 2000-9-1 5955 San Luis Obispo Los Osos; ca. 0.5 mile northwest of Hazard Canyon, between Howard Street and sand dunes. 6 Comment
  SD148235  Hypochaeris glabra G. K. Helmkamp, E. A. Helmkamp 2000-6-15 5683 San Luis Obispo Coastal strand between Los Osos and sand dunes west of the end of Howard St. 14 Comment
  SD186109  Senecio vulgaris G. K. Helmkamp 2003-7-31 8065 San Luis Obispo West edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road. 14 Comment
  SD193299  Erodium botrys G. K. Helmkamp, E. A. Helmkamp 2005-4-17 9366 San Luis Obispo Corbett Canyon, 2.3 miles north of Highway CA 227 in Arroyo Grande. 81 Comment
  SD197657  Asclepias fascicularis G. K. Helmkamp 1990-9-3 San Luis Obispo Central Coast: north of the bay at Avila Beach. 7 Comment
  SEINET1004399  Claytonia parviflora subsp. parviflora George K. Helmkamp 2004-1 8228 San Luis Obispo Central Coast: Nipomo Mesa, Pomeroy Rd, 1.1 mi N of Willow Rd. 130 Comment
  SEINET1004403  Erodium moschatum George K. Helmkamp 2004-1 8299 San Luis Obispo Central Coast: Mesa Dunes Mobile Home Park, along Mesa View Dr. (Hwy CA-1), 0.2 mi S of the jct with Halcyon Rd. 61 Comment
  SEINET1004404  Calandrinia ciliata George K. Helmkamp 2004-1 8295 San Luis Obispo Central Coast: SE of Oceano along Halcyon Rd, 0.2 mi E of Mesa View Dr (Hwy CA-1) 76 Comment
  SEINET1909574  Vicia sativa George K. Helmkamp 2004-1 8287 San Luis Obispo Central Coast: Nipomo Mesa, Pomeroy Rod, 1.1 mi N of Willow Rd 130 Comment
  UCD105462  Astragalus trichopodus var. phoxus G. K. Helmkamp; E. K. Helmkamp 2001-4-29 6576 San Luis Obispo San Luis Obispo County: Irish Hills; Clark Valley Road; 3.8 miles south of Los Osos Valley Rd. (east of Los Osos). 213 Comment
  UCD108118  Lupinus latifolius G. K. Helmkamp; E. A. Helmkamp 2001-4-29 6569 San Luis Obispo San Luis Obispo County: Irish Hills: Clark Valley Rd., 2.8 mi S of Los Osos Valley Rd (E of Los Osos). 91 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
  UCD135901  Solidago confinis G. K. Helmkamp; E. A. Helmkamp 2000-9-1 5951 San Luis Obispo San Luis Obispo County: Los Osos: 0.5 miles northwest of Hazard Canyon, between Howard St. and sand dunes. 30 Comment
  UCD141041  Cyperus eragrostis G. K. Helmkamp; Elizabeth Helmkamp 2005-6-12 9669 San Luis Obispo San Luis Obispo County: South Central Coast Range: along CA Highway 229 (road to Creston), 5.5 miles north of CA Highway 58; beside West Branch of Huerhuero Creek. 363 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
  UCR101024  Astragalus didymocarpus var. didymocarpus George K. Helmkamp, E. A. Helmkamp 1998-4-8 3229 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with Calif. Hwy 33, roughly WNW of Maricopa 579 Comment
  UCR101029  Thelypodium lasiophyllum George K. Helmkamp, E. A. Helmkamp 1998-4-8 3234 San Luis Obispo Soda Lake Rd, 6.6 mi. NW of jct with Calif. hwy 33 (roughly west of Maricopa). 671 Comment
  UCR103807  Cardamine californica George K. Helmkamp 1997-3-8 1450 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
  UCR103962  Eriophyllum confertiflorum George K. Helmkamp 1997-6-21 2059 San Luis Obispo Central Coast, Questa Ridge north of San Luis Obispo and 0.4 mi west of radio towers 854 Comment
  UCR103968  Conium maculatum George K. Helmkamp 1997-6-22 2081 San Luis Obispo Central Coast, South end of Montana de Oro State Park 15 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
  UCR115775  Microseris heterocarpa George K. Helmkamp, E. A. Helmkamp 2000-4-20 5394 San Luis Obispo Central Coast, Prefumo Cyn., 1.2 mi south of Los Osos Valley Rd. 183 Comment
  UCR115785  Lupinus latifolius var. latifolius George K. Helmkamp, E. A. Helmkamp 2000-4-19 5378 San Luis Obispo Central Coast, Irish Hills (SSW of San Luis Obispo). See Cyn., 3 mi south of Los Osos Valley Rd, up Prefumo Cyn. to crest, and down See Cyn. to the site 213 Comment
  UCR115796  Collinsia bartsiifolia var. bartsiifolia George K. Helmkamp, E. A. Helmkamp 2000-4-19 5365 San Luis Obispo Central Coast, Irish Hills, See Canyon at Pippin Lane, about 1.5 mi north of San Luis Bay Dr. 76 Comment
  UCR118334  Solidago confinis George K. Helmkamp, E. A. Helmkamp 2000-9-1 5951 San Luis Obispo Los Osos, c. 0.5 miles NW of Hazard Cyn., between Howard St. and sand dunes 6 Comment
  UCR118339  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2000-9-2 5966 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon, 2.2 mi west of Los Osos Valley Road 137 Comment
  UCR118344  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2000-9-2 5970 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon, 2.2 mi west of Los Osos Valley Road 137 Comment
  UCR118349  Atriplex coulteri George K. Helmkamp, E. A. Helmkamp 2000-9-1 5949 San Luis Obispo Los Osos, c. 0.5 miles NW of Hazard Cyn., between Howard St. and sand dunes 6 Comment
  UCR118950  Cyperus esculentus George K. Helmkamp, E. A. Helmkamp 2000-9-1 5959 San Luis Obispo Los Osos, Martingale at Buckskin 30 Comment
  UCR119244  Adiantum jordanii George K. Helmkamp, E. A. Helmkamp 1998-6-30 4218 San Luis Obispo Coast Ranges, Irish Hills 343 Comment
  UCR121525  Lupinus albifrons var. albifrons George K. Helmkamp 2002-4-21 7481 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
  UCR121539  Pellaea andromedifolia George K. Helmkamp 2002-4-21 7471 San Luis Obispo Central Coast, Santa Rosa Creek Rd., 6.9 mi east of Cambria 183 Comment
  UCR121775  Chenopodium californicum George K. Helmkamp 2002-4-20 7448 San Luis Obispo Central Coast, Los Osos, 0.2 mile northwest of Monarch Lane 9 Comment
  UCR122126  Echium candicans George K. Helmkamp, E. A. Helmkamp 2002-4-19 7629 San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR122163  Camissonia strigulosa George K. Helmkamp, E. A. Helmkamp 2000-4-22 5474 San Luis Obispo Central Coast, Los Osos, between the west end of Howard Ave. and Morro Bay sand dunes 15 Comment
  UCR122461  Garrya veatchii George K. Helmkamp, E. A. Helmkamp 1998-5-20 4001 San Luis Obispo Central Coast, Irish Hills, 3.1 miles SE of Los Osos Valley Rd on Clark Valley Rd., SE of Los Osos 351 Comment
  UCR122469  Chorizanthe staticoides George K. Helmkamp, E. A. Helmkamp 1998-5-20 3899 San Luis Obispo Central Coast, Irish Hills, 3.1 miles SE of Los Osos Valley Rd on Clark Valley Rd., SE of Los Osos 351 Comment
  UCR122474  Anthemis cotula George K. Helmkamp, E. A. Helmkamp 1998-5-20 3894 San Luis Obispo Central Coast, Irish Hills, 3.1 miles SE of Los Osos Valley Rd on Clark Valley Rd., SE of Los Osos 351 Comment
  UCR122479  Phacelia tanacetifolia George K. Helmkamp, E. A. Helmkamp 2001-5-2 6636 San Luis Obispo La Panza Range, Calif. Hwy 58, 33 miles east of Santa Margarita near San Juan Creek 488 Comment
  UCR122489  Chorizanthe membranacea George K. Helmkamp, E. A. Helmkamp 2001-5-2 6635 San Luis Obispo La Panza Range, Calif. Hwy 58, 33 miles east of Santa Margarita near San Juan Creek 488 Comment
  UCR122500  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2001-5-2 6610 San Luis Obispo South Coast Range, La Panza Range, Calf Canyon, CA Hwy 58, 4.5 mi east of Santa Margarita 335 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
  UCR122518  Phacelia distans George K. Helmkamp, E. A. Helmkamp 2001-5-2 6604 San Luis Obispo South Coast Range, La Panza Range, Calf Canyon, CA Hwy 58, 4.5 mi east of Santa Margarita 335 Comment
  UCR122552  Lupinus chamissonis George K. Helmkamp 2002-4-20 7455 San Luis Obispo Central Coast, Los Osos, 0.2 mile northwest of Monarch Lane 9 Comment
  UCR122592  Stellaria media George K. Helmkamp 1995-11-23 113 San Luis Obispo Central Coast, Junction of Martingale Avenue and Buckskin Drive in Los Osos 46 Comment
  UCR122598  Hemizonia congesta subsp. luzulifolia George K. Helmkamp 1995-11-25 102 San Luis Obispo Central Coast, San Simeon Creek Rd, 0.2 mi east of Calif. Hwy 1, at the NE edge of San Simeon State Campground 76 Comment
  UCR122737  Veronica persica George K. Helmkamp, E. A. Helmkamp 1998-5-20 3887 San Luis Obispo Central Coast, Irish Hills, 3.1 miles SE of Los Osos Valley Rd on Clark Valley Rd., SE of Los Osos 351 Comment
  UCR123153  Mimulus aurantiacus George K. Helmkamp, E. A. Helmkamp 2002-4-16 7402 San Luis Obispo Central Coast, Park Ridge 0.5 mi east of Morro Bay near Turri Road 76 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
  UCR130717  Lupinus arboreus George K. Helmkamp, E. A. Helmkamp 1999-5-22 4892 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR130723  Chenopodium littoreum George K. Helmkamp, E. A. Helmkamp 1999-5-22 4887 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131350  Pholistoma auritum var. auritum George K. Helmkamp, E. A. Helmkamp 1999-5-22 4901 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131925  Clematis ligusticifolia George K. Helmkamp 2003-9-8 8122 San Luis Obispo Central Coast, Saltwater ocean inlet 0.2 mile SW of Oceano Airport 6 Comment
  UCR131934  Gnaphalium canescens subsp. beneolens George K. Helmkamp 2003-8-18 8089 San Luis Obispo Central Coast, Oceano; south side of Oceano Airport along an unnamed road 6 Comment
  UCR132008  Brassica rapa George K. Helmkamp 2003-10-8 8205 San Luis Obispo Central Coast, base of Nipomo Mesa 0.25 mi SW of Halcyon Rd along an unnamed road near the railroad crossing 15 Comment
  UCR132010  Limonium sinuatum George K. Helmkamp 2003-10-8 8211 San Luis Obispo Central Coast, base of Nipomo Mesa 0.25 mi SW of Halcyon Rd along an unnamed road near the railroad crossing 15 Comment
  UCR132050  Lupinus arboreus George K. Helmkamp 2003-7-29 8046 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132065  Lupinus chamissonis George K. Helmkamp 2003-7-29 8043 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132146  Marrubium vulgare George K. Helmkamp 2003-10-24 8219 San Luis Obispo Central Coast, El Campo Rd 0.1 mi east of Los Berros Rd, SE of Arroyo Grande 46 Comment
  UCR132753  Lolium perenne George K. Helmkamp 2003-7-29 8037 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR134375  Lolium perenne George K. Helmkamp 2003-9-26 8182 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 Comment
  UCR134385  Lotus scoparius var. scoparius George K. Helmkamp 2003-9-19 8155 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134396  Geranium carolinianum George K. Helmkamp, E. A. Helmkamp 2001-4-29 6590 San Luis Obispo Irish Hills, Clark Valley Rd., 4.2 miles south of Los Osos Valley Rd, E of Los Osos 274 Comment
  UCR134424  Vinca major George K. Helmkamp 2003-9-19 8145 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134429  Lactuca serriola George K. Helmkamp 2003-9-19 8151 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134435  Silene gallica George K. Helmkamp, E. A. Helmkamp 2001-4-29 6563 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
  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
  UCR134689  Spergularia villosa George K. Helmkamp 2003-9-19 8159 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR140068  Ehrharta calycina George K. Helmkamp 2004-3-13 8352 San Luis Obispo Central Coast, Nipomo Mesa, between Arroyo Grande and Nipomo, Willow Rd, 0.6 mi east of Calif. Hwy 1 91 Comment
  UCR140094  Verbena lasiostachys var. scabrida George K. Helmkamp 2004-4-1 8418 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
  UCR140099  Medicago polymorpha George K. Helmkamp 2004-2-7 8264 San Luis Obispo Central Coast, SE of Oceano along Halcyon Rd., just east of Mesa View Dr. 76 Comment
  UCR140113  Camissonia cheiranthifolia subsp. cheiranthifolia George K. Helmkamp 2004-2-11 8283 San Luis Obispo Central Coast, Nipomo Mesa, Willow Rd, 0.6 mi east of Calif. Hwy 1 125 Comment
  UCR140127  Sisymbrium orientale George K. Helmkamp 2004-3-13 8344 San Luis Obispo Central Coast, Nipomo Mesa, between Arroyo Grande and Nipomo, Willow Rd, 0.6 mi east of Calif. Hwy 1 91 Comment
  UCR140131  Hypochaeris radicata George K. Helmkamp 2004-2-17 8296 San Luis Obispo Central Coast, SE of Oceano along Halcyon Rd, 0.2 mi east of Mesa View Dr (Calif. Hwy 1) 76 Comment
  UCR140141  Helianthus annuus George K. Helmkamp 2004-2-11 8290 San Luis Obispo Central Coast, Nipomo Mesa, Pomeroy Rd, 1.1 mi N of Willow Rd. 130 Comment
  UCR140153  Bromus catharticus George K. Helmkamp 2004-2-17 8291 San Luis Obispo Central Coast, base of Nipomo Mesa SW of Halcyon Rd along an unnamed road near the RR crossing 15 Comment
  UCR140373  Piptatherum miliaceum George K. Helmkamp 2004-3-19 8382 San Luis Obispo Central Coast, Arroyo Grande, along Traffic Way south of Grand Ave. at Arroyo Grande Creek 24 Comment
  UCR140383  Amsinckia spectabilis var. spectabilis George K. Helmkamp 2004-3-15 8371 San Luis Obispo Central Coast, edge of Nipomo Mesa overlooking Cienaga Valley, along Calif. Hwy 1 (Mesa View Dr.), 0.3 mi N of Halcyon Rd. 76 Comment
  UCR140407  Aster subulatus var. ligulatus George K. Helmkamp 2004-2-19 8301 A San Luis Obispo Central Coast, Mesa Dunes Mobile Home Park, along Mesa View Dr (Calif. Hwy 1), 0.2 mi south of the jct with Halcyon Rd. 61 Comment
  UCR140411  Ceanothus impressus var. nipomensis George K. Helmkamp 2004-2-19 8305 San Luis Obispo Central Coast, NW of Nipomo, Pomeroy Rd, 0.2 mi N of Willow Rd. 91 Comment
  UCR140995  Lessingia filaginifolia var. filaginifolia George K. Helmkamp 2004-3-5 8331 San Luis Obispo Central Coast, 1.0 mi (direct line) south of Oceano airport 15 Comment
  UCR141008  Lupinus bicolor George K. Helmkamp 2004-3-4 8325 San Luis Obispo Central Coast, Nipomo Mesa in Nipomo, Orchard Ave., 0.1 mi NW of Division St. 91 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
  UCR142157  Eriogonum parvifolium George K. Helmkamp 2002-8-21 7633 San Luis Obispo Central Coast, Los Osos at the west end of Howard St. 15 Comment
  UCR146657  Cirsium vulgare George K. Helmkamp, E. A. Helmkamp 2004-10-1 8831 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 171 Comment
  UCR146828  Sorghum bicolor George K. Helmkamp, E. A. Helmkamp 2004-10-8 8843 San Luis Obispo Central Coast, Biddle Regional Park, 7 mi NE of Arroyo Grande along Lopez Drive and Arroyo Grande Creek 136 Comment
  UCR147225  Chenopodium album George K. Helmkamp, E. A. Helmkamp 2004-8-14 8783 San Luis Obispo Central Coast, junction of Thompson Rd. and Mehlschau Rd., NE of Nipomo 107 Comment
  UCR158179  Euphorbia maculata George K. Helmkamp 2004-6-9 8616 San Luis Obispo Central Coast, Mesa Dunes Mobile Home Park along Mesa View Dr (Calif. Hwy 1), 0.3 mi south of Halcyon Rd. 76 Comment
  UCR158573  Eriogonum fasciculatum var. polifolium George K. Helmkamp, E. A. Helmkamp 2005-4-22 9416 San Luis Obispo East side of Inner South Coast Ranges, Carrizo Highway at mile 38 (Calif. Hwy 58, east of Santa Margarita and west of Simmler-Bitterwater Road) 610 Comment
  UCR158936  Festuca myuros George K. Helmkamp, E. A. Helmkamp 2005-4-17 9376 San Luis Obispo Central Coast, Corbett Canyon, 2.3 miles north of Calif. Hwy 227 in Arroyo Grande 81 Comment
  UCR159299  Cyperus esculentus George K. Helmkamp, E. A. Helmkamp 2004-7-12 8755 San Luis Obispo Central Coast, Nipomo Mesa. Mesa Dunes Mobile Home Park along Mesa View Dr. 0.2 mi south of Jct with Halcyon Rd. (SE of Oceano) 76 Comment
  UCR159850  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2005-6-12 9643 San Luis Obispo South Central Coast Ranges, along Calif. Hwy 58 (Calf Canyon Hwy), 6.7 miles east of Santa Margarita 485 Comment
  UCR159996  Chenopodium berlandieri George K. Helmkamp, E. A. Helmkamp 2005-6-12 9663 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
  UCR160142  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2005-6-9 9580 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
  UCR160148  Mimulus aurantiacus var. pubescens George K. Helmkamp, E. A. Helmkamp 2005-6-9 9575 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
  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
  UCR160299  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2005-6-9 9601 San Luis Obispo Central Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 9.6 miles NE of Huasna Townsite Road 378 Comment
  UCR160393  Pellaea mucronata subsp. mucronata George K. Helmkamp, E. A. Helmkamp 2005-6-9 9613 San Luis Obispo Central Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 9.6 miles NE of Huasna Townsite Road 378 Comment
  UCR160561  Gnaphalium californicum George K. Helmkamp, E. A. Helmkamp 2005-6-7 9547 San Luis Obispo Outer South Coast Ranges, along Huasna Road, 1.3 mile west of Huasna Townsite Road 305 Comment
  UCR160574  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2005-6-9 9585 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
  UCR160579  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2005-6-9 9588 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
  UCR160584  Juncus bufonius George K. Helmkamp, E. A. Helmkamp 2005-6-9 9591 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
  UCR160735  Chorizanthe rectispina George K. Helmkamp, E. A. Helmkamp 2005-6-7 9558 San Luis Obispo Outer South Coast Ranges, along Arroyo Grande to Huasna Road [beyond Huasna], 2.1 miles ENE of Huasna Township Road 253 Comment
  UCR160967  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2005-6-12 9657 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
  UCR161287  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 2005-3-8 9042 San Luis Obispo Central Coast Hills, Prefumo Canyon, north side of Irish Hills. 1.1 mi SW of Los Osos Valley Road along Prefumo Canyon Road 98 Comment
  UCR161290  Pholistoma auritum var. auritum George K. Helmkamp, E. A. Helmkamp 2005-3-9 9089 San Luis Obispo Outer Central Coast Hills, Irish Hills; See Canyon, 1.0 mi N of San Luis Bay Drive 43 Comment
  UCR161336  Acer macrophyllum George K. Helmkamp, E. A. Helmkamp 2005-3-5 9013 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness north of Lake Lopez, Upper Lopez Canyon Road, 7.2 mi north of jct with Lopez Road and at Water End Road 174 Comment
  UCR161346  Lupinus hirsutissimus George K. Helmkamp, E. A. Helmkamp 2005-3-8 9056 San Luis Obispo Central Coast Hills, Prefumo Canyon, north side of Irish Hills; 3.0 mi west of Los Osos Valley Road 140 Comment
  UCR161476  Trifolium angustifolium George K. Helmkamp, E. A. Helmkamp 2005-5-17 9471 San Luis Obispo Central Coast, Mile 60 of Calif. Highway 1, c. 2.0 mi WNW of San Simeon 15 Comment
  UCR161907  Phacelia distans George K. Helmkamp, E. A. Helmkamp 2005-3-1 8983 San Luis Obispo South Outer Coast Ranges, Santa Lucia Range NE of Lopez Lake; 4.8 mi. N of Hi Mountain Road along Upper Lopez Lake Road. Vicinity of Wittenberg and Huffs Hole Creeks 232 Comment
  UCR161911  Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 2005-3-1 8984 San Luis Obispo South Outer Coast Ranges, Santa Lucia Range NE of Lopez Lake; 4.8 mi. N of Hi Mountain Road along Upper Lopez Lake Road. Vicinity of Wittenberg and Huffs Hole Creeks 232 Comment
  UCR161943  Pellaea andromedifolia George K. Helmkamp, E. A. Helmkamp 2005-3-1 8994 San Luis Obispo South Outer Coast Ranges, Santa Lucia Range NE of Lopez Lake; 4.8 mi. N of Hi Mountain Road along Upper Lopez Lake Road. Vicinity of Wittenberg and Huffs Hole Creeks 232 Comment
  UCR161951  Ranunculus californicus George K. Helmkamp, E. A. Helmkamp 2005-2-14 8923 San Luis Obispo Outer South Coast Ranges, Santa Lucia Mtns. Huasna Canyon along Huasna Road; 8.5 mi east of its junction with Lopez Road 277 Comment
  UCR162150  Amsinckia eastwoodiae George K. Helmkamp, E. A. Helmkamp 2005-2-14 8918 San Luis Obispo Outer South Coast Ranges, Santa Lucia Mtns. Huasna Canyon along Huasna Road; 8.5 mi east of its junction with Lopez Road 277 Comment
  UCR163396  Galium aparine George K. Helmkamp, E. A. Helmkamp 2005-3-25 9229 San Luis Obispo Outer South Coast Ranges, upper Lopez Canyon; 2.2 mi north of Hi Mountain Road along Upper Lopez Canyon Road 317 Comment
  UCR163606  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2005-3-25 9196 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness; Hi Mountain Road, 6.7 miles ENE of Lopez Lake near Salt Creek 399 Comment
  UCR163792  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 2005-3-30 9274 San Luis Obispo Outer South Coast Ranges, La Panza Range along Calif. Highway 58 in Calf Canyon, 3.0 mi NE of Santa Margarita 335 Comment
  UCR190595  Lupinus concinnus George K. Helmkamp, E. A. Helmkamp 2005-4-22 9400 San Luis Obispo Inner South Coast Ranges, Carrizo Highway at Mile-32, Calif. Hwy 58, east of Santa Margarita, beside Windmill Creek 509 Comment
  UCR190642  Centaurea melitensis George K. Helmkamp, E. A. Helmkamp 2005-5-12 9447 San Luis Obispo Central Coast Ranges, Cholame Hills, 4.0 mi east of San Miguel on Cross Canyon Road 274 Comment
  UCR190648  Phacelia distans George K. Helmkamp, E. A. Helmkamp 2005-3-25 9197 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness; Hi Mountain Road, 6.7 miles ENE of Lopez Lake near Salt Creek 399 Comment
  UCR202899  Lotus scoparius var. scoparius George K. Helmkamp, E. A. Helmkamp 2000-3-15 5331 San Luis Obispo Central Coast, south end of Morro Bay at the west end of Howard St in Los Osos 6 Comment
  UCR202907  Festuca dertonensis George K. Helmkamp, E. A. Helmkamp 2000-3-15 5341 San Luis Obispo Central Coast, south end of Morro Bay at the west end of Howard St in Los Osos 6 Comment
  UCR202911  Descurainia pinnata subsp. glabra George K. Helmkamp, E. A. Helmkamp 2000-3-15 5329 San Luis Obispo Central Coast, south end of Morro Bay at the west end of Howard St in Los Osos 6 Comment
  UCR58153  Heliotropium curassavicum George K. Helmkamp 1989-8-6 s.n. San Luis Obispo Central Coast, Toro Creek Canyon Road, east of Hwy 101, just south of Cayucos 122 Comment
  UCR58154  Baccharis glutinosa George K. Helmkamp 1989-8-6 s.n. San Luis Obispo Central