Search Results — 2000 specimen records retrieved (1977 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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A yellow cell in the column headed "?", for records with coordinates, indicates a discrepancy with respect to range as specified in the eFlora. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC228597  Eriogonum wrightii var. subscaposum George K. Helmkamp; William Barnes 2010-9-4 16940 Alpine Northern Sierra Nevada Mountains: Red Vista Road, 0.6 mile southeast of its junction with CA-88 just east of Carson Pass 2553 Comment
  CAS-BOT-BC434228  Perideridia lemmonii George K. Helmkamp; Elizabeth Helmkamp 2013-8-2 22091 Alpine Northern Sierra Nevada Mountains: along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam. 2486 Comment
  CLARK-A1045-1122  Potentilla palustris George K. Helmkamp 1977-9-1 V Alpine Sierra Nevada sphagnum bog; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1133  Cryptantha torreyana George K. Helmkamp 1977-9-1 III Alpine Sierra Nevada roadside in sagebrush scrub area at the Pass; ; Topaz Lake 7.5'Q 2529 Comment
  CLARK-A1045-1134  Cryptantha torreyana George K. Helmkamp 1977-9-1 III Alpine Sierra Nevada roadside in sagebrush scrub area at the Pass; ; Topaz Lake 7.5'Q 2529 Comment
  CLARK-A1045-1136  Erigeron strigosus George K. Helmkamp 1977-9-1 VIII Alpine Sierra Nevada west of the Pass, dry roadside; ; Heenan Lake 7.5'Q 2133 Comment
  CLARK-A1045-1138  Glyceria striata George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1159  Smilacina stellata George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1172  Eriophorum gracile George K. Helmkamp 1977-9-3 XI Alpine Sierra Nevada sphagnum bog; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1191  Potentilla gracilis subsp. nuttallii George K. Helmkamp 1977-9-1 VB Alpine Sierra Nevada dry slope under pines; ; Freel Peak 7.5'Q 2346 Comment
  HSC104166  Cryptantha echinella G. K. Helmkamp, E. A. Helmkamp 2012-8-24 19693 Alpine Northern Sierra Nevada Mountains; along CA-88, Carson Pass Hwy., at the west side of Carson Spur, 1.7 air mi. W of Kirkwood 2436 Comment
  HSC104235  Thalictrum fendleri var. fendleri G. K. Helmkamp, Amy Barnes 2012-8-12 19610 Alpine Northern Sierra Nevada Mountains: Woods Lake Rd., 0.8 mi. SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  OBI82255  Cirsium scariosum George K. Helmkamp, Belinda Pesheck 2013-7-14 21039 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 (Carson Pass 7.5' Q.) 2409 Comment
  RSA0049797  Lupinus fulcratus George K. Helmkamp, Belinda Pesheck 2013-7-14 21084 Alpine Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road. 2468 Comment
  RSA747027  Monardella glauca George K. Helmkamp, E. A. Helmkamp 2007-7-17 12535 Alpine Blue Lake Road, about 9 miles south of its junction with CA-88 2498 Comment
  SBBG128981  Micranthes bryophora G. K. Helmkamp, E. A. Helmkamp 2011-8-19 18120 Alpine Tamarack Rd, 0.1 mi E of its jct with Blue Lakes Rd 2485 Comment
  SD197836  Epilobium brachycarpum G. K. Helmkamp, E. A. Helmkamp 2008-8-8 13989 Alpine Northern Sierra Nevada Mountains: along CA-89, 1.4 miles east of Luther Pass. 2262 Comment
  SD225048  Gayophytum eriospermum G. Helmkamp, E. Helmkamp 1997-9-9 2297 Alpine Junction of highways CA-89 and CA-4 south of Markleeville. 1798 Comment
  SD236251  Sisymbrium altissimum G. K. Helmkamp, E. A. Helmkamp 2008-7-22 13883 Alpine Eastern Sierra Nevada Mountains: Carson River road, 0.4 mile east of its west junction with CA-88 (Woodfords 7.5'Q) 1712 Comment
  SD244096  Cryptantha George K. Helmkamp, E. A. Helmkamp 2011-8-19 18104 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 6.6 miles south of its junction with CA-88 (Carson Pass 7.5'Q) 2296 Comment
  SD254617  Lupinus lepidus var. confertus George K. Helmkamp, Amy Barnes 2014-8-27 23030 Alpine Northern Sierra Nevada Mountains; West Fork Carson River canyon along CA 88/Carson Pass Hwy, 2.6 miles east of the junction with Hwy 89/Luther Pass Rd. 1994 Comment
  SEINET2473455 Image available Elymus elymoides subsp. californicus George K. Helmkamp 2007-1 12491 Alpine Northern Sierra Nevada Mountains; Blue Lakes [Forestdale] Road, 0.2 mile south of its junction with CA-88 2200 Comment
  SEINET269099 Image available Poa fendleriana subsp. longiligula G. Helmkamp 1994-5-23 97 -12 Alpine 4 miles E of Ebbetts Pass along highway US-4. Comment
  SEINET3260241 Image available Phacelia ramosissima var. subglabra George K. Helmkamp, E. A. Helmkamp 2008-8-8 13975 Alpine Northern Sierra Nevada Mountains; along CA-89 at Grass Lake, 0.9 mile west of Luther Pass. 2354 Comment
  SEINET3285118 Image available Gayophytum decipiens George K. Helmkamp, E. A. Helmkamp 2007-7-17 12537 Alpine Northern Sierra Nevada Mountains; Blue Lake Road, about 9 miles south of its junction with CA-88. 2498 Comment
  SEINET4691391  Eriophyllum lanatum var. integrifolium George K. Helmkamp, E. A. Helmkamp 2011-1 18141 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 1.4 miles north of its junction with Tamarack Road. 2506 Comment
  SEINET7248291  Thlaspi arvense George K. Helmkamp, Elizabeth Helmkamp 2013-1 22202 Alpine Northern Sierra Nevada Mountains: Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89. 1924 Comment
  UC2015612  Ipomopsis aggregata subsp. aggregata G. Helmkamp 1995-9-23 3 -28 Alpine West side of Sonora Pass just beyond the Mono County line. Comment
  UCD101370  Eriogonum umbellatum var. nevadense G. K. Helmkamp 2007-7-7 12494 Alpine Northern Sierra Nevada Mountains, Blue Lake Road, 0.2 mile south of its junction with CA-88. 2200 Comment
  UCD106246  Navarretia leptalea G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11109 Alpine Northern Sierra Nevada Mountains: Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake. 2509 Comment
  UCD118206  Navarretia divaricata G. 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
  UCD122671  Mimulus guttatus G. K. Helmkamp 2007-7-7 12477 Alpine Northern Sierra Nevada Mountains: along CA-89, 1.3 miles north of its juction with CA-88. 2262 Comment
  UCD127864  Perideridia parishii subsp. latifolia G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12677 Alpine Northern Sierra Nevada Mountains. Woods Lake Road 0.8 mile south of its junction with CA-88; beside the Woods Creek crossing. 2494 Comment
  UCD135576  Senecio integerrimus var. major G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11146 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
  UCD67037  Elymus elymoides subsp. californicus G. K. Helmkamp; E. A. Helmkamp 2007-7-7 12491 Alpine Northern Sierra Nevada Mountains: Blue Lake Road, 0.2 mile south of its junction with CA-88. 2200 Comment
  UCR103543  Lupinus lepidus var. lobbii George K. Helmkamp, E. A. Helmkamp 1997-9-11 2403 Alpine Sierra Nevada Mountains, 0.2 mi northwest of Sonora Pass along CA Hwy 108 2912 Comment
  UCR114896  Agrostis idahoensis George K. Helmkamp, E. A. Helmkamp 1997-9-9 2292 Alpine Sierra Nevada Mtns., Ebbetts Pass along Calif. Hwy [4] 2652 Comment
  UCR122308  Castilleja linariifolia George K. Helmkamp, E. A. Helmkamp 1997-9-9 2309 Alpine Sierra Nevada Mountains, Leviathan Lookout Road at the S and W sides of Leviathan Peak, NW of Monitor Pass 2683 Comment
  UCR122309  Holodiscus microphyllus var. microphyllus George K. Helmkamp, E. A. Helmkamp 1997-9-9 2308 Alpine Sierra Nevada Mountains, Leviathan Lookout Road at the S and W sides of Leviathan Peak, NW of Monitor Pass 2683 Comment
  UCR123907  Navarretia breweri George K. Helmkamp, E. A. Helmkamp 2001-7-6 6848 Alpine Sierra Nevada Mountains, Calif. Hwy 89, 7.1 mi west of US-395 2470 Comment
  UCR176214  Epilobium angustifolium subsp. circumvagum George K. Helmkamp, E. A. Helmkamp 2006-8-3 11116 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176221  Gilia leptalea George K. Helmkamp, E. A. Helmkamp 2006-8-3 11109 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176278  Artemisia ludoviciana subsp. incompta George K. Helmkamp, E. A. Helmkamp 2006-8-3 11130 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176491  Senecio integerrimus var. major George K. Helmkamp, E. A. Helmkamp 2006-8-3 11146 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176493  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2006-8-3 11125 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176498  Thalictrum fendleri var. fendleri George K. Helmkamp, E. A. Helmkamp 2006-8-3 11126 A 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
  UCR176506  Artemisia ludoviciana subsp. incompta George K. Helmkamp, E. A. Helmkamp 2006-8-3 11148 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR188470  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2007-7-17 12536 Alpine Northern Sierra Nevada Mountains, Blue Lake Road, about 9 miles south of its junction with CA-88 2498 Comment
  UCR189144  Lupinus lepidus var. sellulus George K. Helmkamp, E. A. Helmkamp 2007-7-17 12554 Alpine Northern Sierra Nevada Mountains, Blue Lake Road about nine miles south of its junction with CA-88 2511 Comment
  UCR190165  Eucephalus breweri George K. Helmkamp, E. A. Helmkamp 2007-7-17 12545 Alpine Northern Sierra Nevada Mountains, Blue Lake road, 11.5 miles south of its junction with CA-88, c. 0.5 mi. due east of Lower Blue Lake 2463 Comment
  UCR190167  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2007-7-17 12547 Alpine Northern Sierra Nevada Mountains, Blue Lake Road about nine miles south of its junction with CA-88 2511 Comment
  UCR190482  Osmorhiza occidentalis George K. Helmkamp, E. A. Helmkamp 2007-8-4 12691 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
  UCR196837  Hypericum formosum var. scouleri George K. Helmkamp, E. A. Helmkamp 2008-7-22 13892 Alpine Eastern Sierra Nevada Mountains, Carson River road, 0.4 mile east of its west junction with CA-88 1713 Comment
  UCR196856  Equisetum laevigatum George K. Helmkamp, E. A. Helmkamp 2008-7-22 13898 Alpine Eastern Sierra Nevada Mountains, Carson River road, 0.4 mile east of its west junction with CA-88 1713 Comment
  UCR196915  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2008-7-22 13863 Alpine Eastern Sierra Nevada Mountains, Blue Lake Road just southeast of its junction with CA-88 2180 Comment
  UCR202555  Aster ascendens George K. Helmkamp, E. A. Helmkamp 2008-9-22 14152 Alpine Northern Sierra Nevada Mountains, along CA-89. 0.1 mile north of Markleeville 1686 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
  UCR202672  Eriogonum wrightii George K. Helmkamp, E. A. Helmkamp 2008-9-22 14141 Alpine Northern Sierra Nevada Mountains, small road spur just northeast of Carson Pass 2599 Comment
  UCR206785  Erysimum capitatum var. capitatum George K. Helmkamp, Ann Kerchner 2009-7-25 15303 Alpine Sierra Nevada Mountains, Blue Lakes Road, 8.5 miles south of its junction with CA-88 2491 Comment
  UCR209547  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2009-8-4 15396 Alpine Sierra Nevada Mountains, along CA-4, 0.1 mile west of (just over the crest of) Ebbetts Pass 2660 Comment
  UCR229422  Melica aristata George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18081 Alpine Northern Sierra Nevada Mountains, south side of Bear Valley Village, along CA Hwy 4 2169 Comment
  UCR234554  Gayophytum humile George K. Helmkamp, E. A. Helmkamp 2011-8-19 18099 A Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 6.6 miles south of its junction with CA-88 2296 Comment
  UCR234620  Trifolium monanthum subsp. monanthum George K. Helmkamp, E. A. Helmkamp 2011-8-19 18113 Alpine Northern Sierra Nevada Mountains, Tamarack Road, 0.1 mile east of its junction with Blue Lakes Road 2485 Comment
  UCR245545  Elymus hispidus George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22263 Alpine Northern Sierra Nevada Mountains, along CA-4 beside Lake Alpine 2184 Comment
  UCR245547  Aster eatonii George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22241 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
  UCR245562  Alnus incana subsp. tenuifolia George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22243 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
  UCR245604  Artemisia cana subsp. bolanderi George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22214 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR247252  Vicia villosa subsp. villosa George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22178 Alpine Northern Sierra Nevada Mountains, along CA-89, 0.6 mile south of Markleeville 1691 Comment
  UCR248682  Potentilla gracilis var. elmeri George K. Helmkamp, Belinda Pesheck 2013-7-14 21061 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
  UCR248702  Penstemon rydbergii var. oreocharis George K. Helmkamp, Belinda Pesheck 2013-7-14 21043 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
  UCR252792  Aster occidentalis var. occidentalis George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22096 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 Comment
  UCR253072  Solidago canadensis subsp. elongata George K. Helmkamp, Belinda Pesheck 2013-7-14 21086 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR253096  Carex subfusca George K. Helmkamp, Belinda Pesheck 2013-7-14 21071 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR257673  Carex hoodii George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19692 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
  UCR257748  Aster occidentalis var. occidentalis George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19704 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
  UCR257749  Monardella odoratissima George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19703 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
  UCR257829  Agrostis idahoensis George K. Helmkamp, Amy Barnes 2012-8-12 19636 Alpine Northern Sierra Nevada Mountains, north side of CA-88/Carson Pass Hwy, 0.4 mile east of its junction with Kirkwood Meadows Drive 2357 Comment
  UCR257840  Elymus hispidus George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19715 Alpine Northern Sierra Nevada Mountains, along CA-88 at the Red Vista Rd. junction, east end of Carson Pass near Red Lake 2619 Comment
  UCR257864  Castilleja miniata subsp. miniata George K. Helmkamp, Amy Barnes 2012-8-12 19616 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257873  Madia glomerata George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19699 A Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, at the west side of Carson Spur, 1.7 air mi west (278 deg. ) of Kirkwood 2436 Comment
  UCR257878  Delphinium glaucum George K. Helmkamp, Amy Barnes 2012-8-12 19598 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257879  Polygonum aviculare George K. Helmkamp, Amy Barnes 2012-8-12 19596 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257952  Lupinus lepidus var. confertus George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19723 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
  UCR258391  Melilotus officinalis George K. Helmkamp, Amy Barnes 2014-8-27 23036 Alpine Northern Sierra Nevada Mountains, Woodfords, at the junction of CA-88 and CA-89 1723 Comment
  UCR258399  Lupinus lepidus var. confertus George K. Helmkamp, Amy Barnes 2014-8-27 23035 Alpine Northern Sierra Nevada Mountains, Woodfords, at the junction of CA-88 and CA-89 1723 Comment
  UCR258410  Salsola George K. Helmkamp, Amy Barnes 2014-8-27 23039 Alpine Northern Sierra Nevada Mountains, Woodfords, at the junction of CA-88 and CA-89 1723 Comment
  UCR258536  Artemisia tridentata subsp. arbuscula George K. Helmkamp, Amy Barnes 2014-8-27 23026 Alpine Northern Sierra Nevada Mountains, West Fork Carson River canyon, along highway CA-88/Carson Pass Hwy, 2.6 miles east of the junction with Hwy 89/Luther Pass Rd. 1994 Comment
  UCR87666  Arabis holboellii var. retrofracta George K. Helmkamp, E. A. Helmkamp 1995-6-23 95- 8 -3 Alpine Sierra Nevada Mtns., Monitor Pass, along Calif. Hwy 89 2530 Comment
  UCR87698  Phacelia humilis George K. Helmkamp, E. A. Helmkamp 1995-6-23 95- 8 -5 Alpine Sierra Nevada Mtns., Monitor Pass, along Calif. Hwy 89 2530 Comment
  UCR87702  Ranunculus alismifolius var. alismifolius George K. Helmkamp, E. A. Helmkamp 1995-6-23 95- 7 -3 Alpine Sierra Nevada Mtns, Bear Valley along Calif. Hwy 4 2134 Comment
  UCR88312  Mimulus tilingii George K. Helmkamp 1995-9-23 3 36 Alpine Sierra Nevada Mtns., W side of Sonora Pass just beyond Mono County line 2927 Comment
  UCR88317  Hackelia floribunda George K. Helmkamp 1995-9-23 3 16 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  UCR88340  Erigeron divergens George K. Helmkamp, E. A. Helmkamp 1995-6-23 95- 9 -5 Alpine Sierra Nevada Mtns, Calif. Hwy 89, beside alpine Heenan Lake, east of Monitor Pass 2165 Comment
  CAS-BOT-BC228552  Lupinus nanus George K. Helmkamp; E. A. Helmkamp 2011-5-19 17308 Amador Eastern edge San Joaquin Valley at start of Sierra Nevada foothills: Pardee Dam Road, 0.2 mile south of Stony Creek Road, 5 miles SE (124 deg. ) of Ione 201 Comment
  CAS-BOT-BC228613  Micropus californicus var. californicus George K. Helmkamp; E. A. Helmkamp 2011-6-7 17486 Amador Northern Sierra Nevada Mountains Foothills: Shake Ridge Road, 7.6 rd. miles northeast (via Pine Gulch & Gopher Flat rds) of junction of Sutter Creek Rd. and Pine Gulch Rd. 712 Comment
  CAS-BOT-BC228614  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
  CAS-BOT-BC228616  Nemophila pulchella var. pulchella George K. Helmkamp; E. A. Helmkamp 2011-6-7 17495 Amador Northern Sierra Nevada Mountains Foothills: Shake Ridge Road, 7.6 rd. miles northeast (via Pine Gulch & Gopher Flat rds) of junction of Sutter Creek Rd. and Pine Gulch Rd. 712 Comment
  CAS-BOT-BC438797  Chenopodium G. K. Helmkamp; E. A. Helmkamp 2007-9-4 12894 Amador Northern Sierra Nevada Mountains, west slope: Along CA-88 3.2 miles west of Hams Station along CA-88, just east of Cooks Station. 1527 Comment
  CAS-BOT-BC444023  Agrostis idahoensis George K. Helmkamp; Elizabeth Helmkamp 2013-7-6 20987 Amador Northern Sierra Nevada Mountains: Bear River Road at the south end of the dam for Lower Bear River Reservoir. 543 Comment
  CAS-BOT-BC444032  Madia elegans George K. Helmkamp; Elizabeth Helmkamp 2013-8-11 22142 Amador Sierra Nevada Mountains Foothills: Sutter Creek-Volcano Road, 4.8 miles northeast of the town of Sutter Creek. 123 Comment
  CAS-BOT-BC520325  Madia gracilis George K. Helmkamp; E. A. Helmkamp 2012-6-6 19122 Amador Northern Sierra Nevada Mountains: along Hwy CA-88, 1.1 mi W of Cooks Station 1438 Comment
  CAS-BOT-BC523897  Anaphalis margaritacea George K. Helmkamp; Amy Barnes 2014-10-10 23135 Amador Northern Sierra Nevada Mountains: West side of Bear River Reservoir, 0.2 mi N of the dam 1795 Comment
  CAS-BOT-BC62722  Quercus chrysolepis G. K. Helmkamp; E. A. Helmkamp 2008-5-4 13384 Amador Sierra Nevada Mountains Foothills: along Tiger Creek Road, 2.8 miles east of CA-88; at the entrance to 744 Comment
  CDA36253  Galium parisiense G. K. Helmkamp, E. A. Helmkamp 2007-4-23 11801 Amador Foothills, Northern Sierra Nevada Mountains; Junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione. Comment
  JEPS119435  Madia gracilis George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-6 17956 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 Comment
  RSA0035746  Mentha spicata var. spicata George K. Helmkamp, Elizabeth A. Helmkamp 2013-9-13 22291 Amador Volcano Road; 0.1 mile northwest of the village of Volcano 671 Comment
  RSA0049941  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2012-6-6 19140 Amador Panther Creek Road, 6.2 miles south of its junction with CA-88, 5.9 mi. SW (245 deg ) of Bear River Reservoir dam 1438 Comment
  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
  RSA0050409  Cyperus niger George K. Helmkamp, Elizabeth A. Helmkamp 2013-9-13 22286 Amador Volcano Road, 11.4 miles northeast of CA-49 in Sutter Creek, c. 0.4 mi SW of Volcano 608 Comment
  RSA0057869  Alnus rhombifolia George K. Helmkamp, E. A. Helmkamp 2013-11-11 22484 Amador Sutter Creek-Volcano Road, 4.6 miles east of CA-49 in town of Sutter Creek. Picnic area along Sutter Creek. 421 Comment
  RSA0062467  Mimulus primuloides var. primuloides George K. Helmkamp, Elizabeth A. Helmkamp 2013-7-6 20999 Amador Bear River Road, 1.5 road miles east of the dam for Lower Bear River Reservoir. 1837 Comment
  RSA0062473  Arabis sparsiflora var. arcuata George K. Helmkamp, Elizabeth A. Helmkamp 2013-7-6 20965 Amador Bear River Road at the south end of the dam for Lower Bear River Reservoir. 1784 Comment
  RSA0078106  Oxalis corniculata George K. Helmkamp, E. A. Helmkamp 2006-10-6 11477 Amador Along Calif. Hwy 49, 1.1 miles south of Plymouth. 314 Comment
  RSA0081171  Typha angustifolia George K. Helmkamp, E. A. Helmkamp 2006-10-6 11469 Amador Along Calif. Hwy 49 beside Big Indian Creek; 2.2 miles south of El Dorado County line. 271 Comment
  RSA0093627  Mentha spicata var. spicata George K. Helmkamp, E. A. Helmkamp 2012-10-5 19968 Amador Northern Sierra Nevada Mountains Foothills. beside Sutter Creek along the Sutter Creek-Volcano Road, 0.6 mile southwest of Meadowlark Lane. 421 Comment
  RSA0107417  Navarretia divaricata subsp. vividior George K. Helmkamp, Mary Alice Barnes 2013-5-13 20598 Amador Sierra Nevada Mountains: Shake Ridge Road, 16.7 miles northeast of its junction with E-16 via Fiddletown Rd. 983 Comment
  RSA781306  Amaranthus retroflexus George K. Helmkamp, E. Helmkamp 2009-9-22 15640 Amador junction of Shenandoah Road (CA-16) and Steiner Road, southwest of River Pines 750 Comment
  RSA794580  Collinsia torreyi var. wrightii George K. Helmkamp, E. A. Helmkamp 2011-8-6 17991 Amador Ellis Road, 0.2 miles south of its junction with CA-88. 2009 Comment
  SBBG128637  Astragalus bolanderi G. K. Helmkamp, E. A. Helmkamp 2011-8-6 17988 Amador Ellis Rd, 0.2 mi S of its jct with CA-88 2009 Comment
  SBBG128652  Penstemon roezlii G. K. Helmkamp, E. A. Helmkamp 2011-8-6 17963 Amador Ellis Rd, 2.1 mi S of its jct with CA-88 1794 Comment
  SD212624  Trifolium hirtum G. K. Helmkamp, Elizabeth Helmkamp 2006-5-6 10301 Amador Along Highway CA 49, 0.3 mile south of Drytown. 226 Comment
  SD234822  Holocarpha virgata subsp. virgata G. K. Helmkamp, E. A. Helmkamp 2007-9-4 12903 Amador Foothills, Northern Sierra Nevada Mountains: along Hwy CA-49, south of Drytown and near the crossing of Sutter Creek (Amador City 7.5'Q) 241 Comment
  SD236110  Athyrium filix-femina var. cyclosorum G. K. Helmkamp 2008-6-17 13691 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
  SD243189  Claytonia perfoliata subsp. mexicana George K. Helmkamp, E. A. Helmkamp 2011-3-12 17081 Amador Northeastern San Joaquin Valley: along CA-88, 0.8 mile northeast of the San Joaquin County line, c. 3 miles north of Camache Reservoir. 81 Comment
  SD257311  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, Mary Alice Barnes 2013-5-13 20562 Amador Sierra Nevada Mountains Foothills: along E-16/Shenandoah Rd., 3.6 road miles south of River Pines, 4.15 air miles NE (39a^z) of Plymouth (Fiddletown 7.5'Q) 516 Comment
  SEINET11261124  Centaurium muehlenbergii George Helmkamp, E. A. Helmkamp 2011-6-22 17615 Amador Northern Sierra Nevada Mountains Foothills: Sutter-Ione Road, 2.7 miles West of it junction with CA-49, 2.9 mi. SW (2211/4) of Amador City.; 0 Comment
  SEINET11265854  Gilia capitata subsp. pedemontana George Helmkamp, E. A. Helmkamp 2011-5-10 17247 Amador Northern Sierra Nevada Mountains Foothills: along Sutter Creek near Sutter Creak Rd., 2.9 air miles NE (681/4) of town of Sutter Creek (Amador City 7.5' Q.); 0 411 Comment
  SEINET13203093 Image available Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, Mary Alice Barnes 2013-1 20562 Amador Sierra Nevada Mountains Foothills: along E-16/Shenandoah Rd., 3.6 miles south of River Pines, 4.15 air miles NE (39 deg. ) of Plymouth (Fiddletown 7.5' Q.) 517 Comment
  SEINET13262613  Elymus elymoides George K. Helmkamp, Mary Alice Barnes 2013-1 20618 Amador Stony Creek Road, 8.7 miles southwest of Jackson, 0.58 mi. NNE (07 deg. ) of Chrome Mountain 308 Comment
  SEINET1908780  Deschampsia danthonioides G. K. Helmkamp, E. A. Helmkamp 2008-1 13629 Amador Northern Sierra Nevada Mountains: Panther Creek Road, 0.1 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station (Peddler Hill 7.5'Q) 1652 Comment
  SEINET2441266  Gilia leptalea George K. Helmkamp, E. A. Helmkamp 2007-7-17 12518 Amador Northern Sierra Nevada Mountains: along CA-88 at Martin Meadow, 2.2 miles north of Silver Lake. (Caples Lake 7.5' Q.). 2317 Comment
  SEINET2441402  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2009-8-24 15524 Amador Sierra Nevada Mountains Foothills: along CA-49 at the junction with Fiddletown Road in the city of Plymouth (Amador ity 7.5' Q.). 314 Comment
  SEINET3238869 Image available Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2008-5-4 13385 Amador Sierra Nevada Mountains Foothills; along Tiger Creek Road, 2.8 miles east of CA-88; at the entrance to Tiger Creek Reservoir. 744 Comment
  SEINET3238897 Image available Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2008-3-12 13147 Amador Foothills, northern Sierra Nevada Mountains: 0.2 mile east of the junction of Bell Road and CA-49 at Enterprise; junction of Plymouth and Pigeon Creeks. 259 Comment
  SEINET3245965  Ribes cereum G. K. Helmkamp, E. A. Helmkamp 2010-1 16507 Amador Northern Sierra Nevada Mountains: between the west shore of Silver Lake and CA-88; lakeside rest stop area (Tragedy Spring 7.5') 2234 Comment
  SEINET3257999 Image available Cystopteris fragilis George K. Helmkamp, E. A. Helmkamp 2008-5-4 13388 Amador Sierra Nevada Mountains Foothills; along Tiger Creek Road, 0.3 mi east of the turnoff to Tiger Creek Reservoir. 774 Comment
  SEINET3258015 Image available Blennosperma nanum var. nanum George K. Helmkamp, E. A. Helmkamp 2008-3-12 13151 Amador Sierra Nevada Mountains Foothills; along CA-49 at the south end of Plymouth. 319 Comment
  SEINET3260068 Image available Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2008-10-30 14306 Amador Northern Sierra Nevada Mountains Foothills: along CA-124 at the north noundary of Ione. 90 Comment
  SEINET3271578 Image available Stipa californica George K. Helmkamp, E. A. Helmkamp 2007-4-23 11799 Amador Foothills, Northern Sierra Nevada Mountains; junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione 229 Comment
  SEINET3828506  Heteromeles arbutifolia George K. Helmkamp, E. A. Helmkamp 2010-1 17001 Amador Northern Sierra Nevada Mountains Foothills: Shake Ridge Road, 0.3 mile southwest of its junction with Quartz Mountains Road 4.25 mi, NE (47 degrees) of Sutter Creek ( Pine Grove 7.5') 527 Comment
  SEINET3909266  Carex amplectens 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.; 0 2021 Comment
  SEINET3927646  Deschampsia danthonioides George K. Helmkamp, E. A. Helmkamp 2008-6-9 13629 Amador Northern Sierra Nevada Mountains: Panther Creek Road, 0.1 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station.; 0 1652 Comment
  SEINET4178611 Image available Trifolium obtusiflorum George K. Helmkamp, E. A. Helmkamp 2011-6-17 17601 Amador Northern Sierra Nevada Mountains Foothills: along CA-26, 0.1 mile west of the Calaveras county line at the bridge over the North Fork Mokelumne River. 652 Comment
  SEINET4560787  Eriogonum roseum George K. Helmkamp, E. A. Helmkamp 2011-1 18300 Amador Northern Sierra Nevada Mountains Foothills: along CA-26 (Red Corral Rd.), 2.2 miles north of the crossing over North Fork Mokelumne River, 1 mile SSE (159 degrees) of Pioneer. 762 Comment
  SEINET9258901  Agrostis exarata George K. Helmkamp, Elizabeth Helmkamp 2013-1 20981 Amador Northern Sierra Nevada Mountains: Bear River Road at the south end of the dam for Lower Bear River Reservoi 1783 Comment
  UCD106182  Hosackia oblongifolia var. oblongifolia G. K. Helmkamp; E. A. Helmkamp 2007-8-16 12757 Amador Northern Sierra Nevada Mountains, along the south side of Bear River Reservoir just east of the spillway. 1777 Comment
  UCD107800  Lupinus fulcratus G. K. Helmkamp; E. A. 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
  UCD110269  Juglans hindsii G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11797 Amador Northern Sierra Nevada Mountains. Along CA Hwy 124, 0.25 mile from its junction with Hwy 16. 252 Comment
  UCD120114  Cryptantha flaccida G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11814 Amador Northern Sierra Nevada Mountains, junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione. 229 Comment
  UCD120486  Phacelia hastata subsp. hastata G. K. Helmkamp; E. A. Helmkamp 2007-8-16 12752 Amador Northern Sierra Nevada Mountains: along Hwy CA-88, 3.5 miles south of its junction with Mormon Emigrant Trail. Comment
  UCD121689  Galium aparine G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11801 Amador Northern Sierra Nevada Mountains: junction of Tonzi Road and CA-124 about 7 miles north of Ione. 229 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
  UCD137561  Plectritis ciliosa G. K. Helmkamp; E. A. Helmkamp 2007-4-5 11732 Amador Northern Sierra Nevada Mountains: Sutter to Ione Road. 0.4 mile east of CA-49, northeast of Ione. 180 Comment
  UCD137563  Plectritis ciliosa G. K. Helmkamp; E. A Helmkamp 2007-4-23 11788 Amador Northern Sierra Nevada Mountains: along Bell Road beside Plymouth Creek just east of CA-49 in the vicinity of Enterprise. 302 Comment
  UCD141526  Juncus ensifolius G. K. Helmkamp; E. A. Helmkamp 2007-8-16 12746 Amador Northern Sierra Nevada Mountains, along Hwy 88, 1 mile south of the junction with Mormon Emigrant Trail. 2172 Comment
  UCD66101  Agrostis variabilis G. K. Helmkamp 2007-6-29 12435 Amador Northern Sierra Nevada Mountains: Kirkwood Meadows about one mile west of Kirkwood and 0.1 mile south of CA-88. 2317 Comment
  UCD74339  Vulpia myuros var. hirsuta G. K. Helmkamp; E. A. Helmkamp 2007-3-17 11638 Amador Sacramento Valley/Sierra Nevada Foothills: Hwy. CA-24, 3.2 mi. southwest of Plymouth near Tonzi Road. 210 Comment
  UCD90553  Poa bolanderi G. K. Helmkamp; E. A. Helmkamp 2007-6-29 12429 Amador Northern Sierra Nevada Mountains. Sandy Cove picnic area. Southeast of CA-88 beside the west edge of Silver Lake. 2244 Comment
  UCR171218  Blennosperma nanum var. nanum George K. Helmkamp, E. A. Helmkamp 2006-3-19 10085 Amador Northern Sierra Nevada Foothills, Along Calif. Highway 49 just south of Plymouth 323 Comment
  UCR171219  Stellaria media George K. Helmkamp, E. A. Helmkamp 2006-3-19 10094 Amador Northern Sierra Nevada Foothills, Along Calif. Highway 49 south of Plymouth 323 Comment
  UCR173365  Thysanocarpus curvipes George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10360 Amador Northern Sierra Nevada Foothills, Along Calif. Hwy 88, 0.9 mi. south of the El Dorado County line at Enterprise 274 Comment
  UCR173367  Lupinus bicolor George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10357 Amador Northern Sierra Nevada Foothills, Along Calif. Hwy 88, 0.9 mi. south of the El Dorado County line at Enterprise 274 Comment
  UCR173765  Vicia villosa subsp. varia George K. Helmkamp, Elizabeth Helmkamp 2006-5-6 10310 Amador Northern Sierra Nevada foothills, middle of the city Jackson, 0.1 mile north of the junction of Calif. Hwy 49 and Calif. Hwy 88 378 Comment
  UCR179745  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2006-10-6 11467 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49 beside Big Indian Creek; 2.2 miles south of El Dorado County line 271 Comment
  UCR179747  Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 2006-10-6 11464 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49 near Enterprise, 1.8 miles south of El Dorado Co. line 274 Comment
  UCR185329  Claytonia parviflora subsp. parviflora George K. Helmkamp, E. A. Helmkamp 2007-4-23 11780 Amador Foothills, Northern Sierra Nevada Mountains, along Bell Road beside Plymouth Creek just east of Calif. Hwy 49 in the vicinity of Enterprise 302 Comment
  UCR188476  Potentilla gracilis var. fastigiata George K. Helmkamp, E. A. Helmkamp 2007-7-17 12528 Amador Northern Sierra Nevada Mountains, along CA-88 at Martin Meadow, 2.2 miles north of Silver Lake 2317 Comment
  UCR189484  Claytonia perfoliata George K. Helmkamp, E. A. Helmkamp 2007-3-17 11640 Amador Sacramento Valley/ Sierra Nevada Foothills, Hwy CA-24, 3.2 mi southwest of Plymouth near Tonzi Road 210 Comment
  UCR189514  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2007-8-16 12751 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 3.5 miles south of its junction with Mormon Emigrant Trail 2146 Comment
  UCR189521  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2007-8-16 12758 Amador Northern Sierra Nevada Mountains, along the south side of Bear River Reservoir just east of the spillway 1777 Comment
  UCR189523  Penstemon newberryi var. newberryi George K. Helmkamp, E. A. Helmkamp 2007-8-16 12756 Amador Northern Sierra Nevada Mountains, along the south side of Bear River Reservoir just east of the spillway 1777 Comment
  UCR190142  Agrostis stolonifera George K. Helmkamp, E. A. Helmkamp 2007-9-4 12893 Amador Northern Sierra Nevada Mountains, along CA-88 at Mile-49, 3.1 miles east of Hams Station 1860 Comment
  UCR190208  Pinus ponderosa George K. Helmkamp, E. A. Helmkamp 2007-9-4 12897 Amador Northern Sierra Nevada Mountains, west slope, along CA-88 6.2 miles west of Hams Station 1375 Comment
  UCR190209  Aster foliaceus var. parryi George K. Helmkamp, E. A. Helmkamp 2007-9-4 12890 Amador Northern Sierra Nevada Mountains, along CA-88 at Mile-49, 3.1 miles east of Hams Station 1860 Comment
  UCR190547  Penstemon newberryi var. newberryi George K. Helmkamp 2007-6-29 12451 Amador Northern Sierra Nevada Mountains, south side of CA-88, 0.1 mile east of Carson Spur summit 2424 Comment
  UCR190562  Arctostaphylos nevadensis George K. Helmkamp 2007-6-29 12415 Amador Northern Sierra Nevada Mountains, Shot Rock Vista picnic area along CA-88, 0.9 miles east of its junction with Mormon Emigrant Trail 2329 Comment
  UCR194694  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2007-10-13 13100 Amador Central Valley / Northern Sierra Nevada Foothills, along CA-124, 0.3 mile north of its junction with CA-88 and south of Ione 87 Comment
  UCR196850  Mimulus tilingii George K. Helmkamp 2008-6-17 13680 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR197294  Senecio integerrimus George K. Helmkamp, E. A. Helmkamp 2008-6-23 13721 Amador Northern Sierra Nevada Mountains, Dufrene Road, 0.1 mile south of its junction with CA-88, between Mormon Emigrant Trail and Hamms Station 2076 Comment
  UCR197642  Mimulus breweri George K. Helmkamp, E. A. Helmkamp 2008-6-23 13746 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
  UCR197667  Carex douglasii George K. Helmkamp, E. A. Helmkamp 2008-6-9 13638 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.6 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station 1607 Comment
  UCR198462  Veronica persica George K. Helmkamp, E. A. Helmkamp 2008-3-12 13158 Amador Sierra Nevada Mountains Foothills, Middle Bar Road, 3.2 miles south of its junction with CA-49 at Scottsville 229 Comment
  UCR201526  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2008-9-28 14172 Amador Foothills, northern Sierra Nevada Mountains, Sutter Creek Rancho Road on the north side of CA-88 and 4.2 miles southwest of the junction of CA-88 and CA-49 287 Comment
  UCR201541  Horkelia californica George K. Helmkamp, E. A. Helmkamp 2008-9-28 14165 Amador Foothills, northern Sierra Nevada Mountains, Sutter Creek Rancho Road on the north side of CA-88 and 4.2 miles southwest of the junction of CA-88 and CA-49 287 Comment
  UCR201543  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2008-9-28 14169 Amador Foothills, northern Sierra Nevada Mountains, Sutter Creek Rancho Road on the north side of CA-88 and 4.2 miles southwest of the junction of CA-88 and CA-49 287 Comment
  UCR206607  Allium validum George K. Helmkamp, Ann Kerchner 2009-7-25 15283 Amador Sierra Nevada Mountains, south side of CA-88, 3.2 miles west of the Alpine Co. line; near Martin Meadow 2306 Comment
  UCR206735  Gilia leptalea subsp. bicolor George K. Helmkamp, Ann Kerchner 2009-7-25 15284 Amador Sierra Nevada Mountains, south side of CA-88, 3.2 miles west of the Alpine Co. line; near Martin Meadow 2306 Comment
  UCR208320  Veronica persica George K. Helmkamp, E. A. Helmkamp 2009-3-26 14475 Amador San Joaquin Valley, along CA-88, 0.4 mile northeast of the San Joaquin Co. line 81 Comment
  UCR209562  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2009-8-6 15398 Amador Sierra Nevada Mountains Foothills, along Hwy CA-88, 3.1 miles northeast of CA-49 in Jackson 424 Comment
  UCR218181  Silene gallica George K. Helmkamp, E. A. Helmkamp 2010-5-31 16186 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 3.3 miles east of the village of Sutter Creek 413 Comment
  UCR218183  Streptanthus tortuosus var. tortuosus George K. Helmkamp, E. A. Helmkamp 2010-5-31 16192 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 5.2 miles east of the village of Sutter Creek 451 Comment
  UCR218188  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2010-5-31 16160 Amador Sierra Nevada Mountains Foothills, Church Street, becoming Sutter Creek-Volcano Road, 0.2 mile east of the village of Sutter Creek 402 Comment
  UCR218189  Hypochaeris glabra George K. Helmkamp, E. A. Helmkamp 2010-5-31 16159 Amador Sierra Nevada Mountains Foothills, Church Street, becoming Sutter Creek-Volcano Road, 0.2 mile east of the village of Sutter Creek 402 Comment
  UCR219015  Convolvulus fruticetorum George K. Helmkamp, E. A. Helmkamp 2010-6-23 16357 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
  UCR219017  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2010-6-23 16341 Amador Sierra Nevada Mountains Foothills, Sutter Creek Road, 7.2 miles northeast of its junction with old CA-49 in Sutter Creek village 473 Comment
  UCR230067  Geranium molle George K. Helmkamp, E. A. Helmkamp 2011-5-19 17310 Amador Eastern edge San Joaquin Valley at start of Sierra Nevada foothills, Pardee Dam Road, 0.2 mile south of Stony Creek Road, 5 miles SE (124 deg. ) of Ione 201 Comment
  UCR230754  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2010-10-1 17002 Amador Northern Sierra Nevada Mountains Foothills, Shake Ridge Road, 0.3 mile southwest of its junction with Quartz Mountain Road, 4.25 mi. NE (47 deg. ) of Sutter Creek 527 Comment
  UCR230975  Festuca myuros George K. Helmkamp, E. A. Helmkamp 2011-6-7 17465 Amador Northern Sierra Nevada Mountains Foothills, Pine Gulch Road, 0.5 mile north of its intersection with Sutter Creek Road 457 Comment
  UCR230977  Sidalcea malviflora George K. Helmkamp, E. A. Helmkamp 2011-6-7 17463 Amador Northern Sierra Nevada Mountains Foothills, Pine Gulch Road, 0.5 mile north of its intersection with Sutter Creek Road 457 Comment
  UCR233120B  Mimulus layneae George K. Helmkamp, E. A. Helmkamp 2011-8-6 18000 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233126B  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2011-8-6 17987 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
  UCR233143B  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2010-3-26 15770 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
  UCR233358  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2011-8-6 17967 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR233406  Trichostema oblongum George K. Helmkamp, E. A. Helmkamp 2011-8-6 17974 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR235425  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2012-4-19 18792 Amador Northern Sierra Nevada Mountains Foothills, Bunker Hill Road at the junction with N Amador Road, c. 0.5 mi. N of Amador City 299 Comment
  UCR235427  Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 2012-4-19 18794 Amador Northern Sierra Nevada Mountains Foothills, Bunker Hill Road at the junction with Fremont Mine Road, just north of Amador City 311 Comment
  UCR237276  Delphinium nuttallianum George K. Helmkamp, E. A. Helmkamp 2012-7-14 19390 Amador Northern Sierra Nevada Mountains, edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 miles north of Silver Lake 2317 Comment
  UCR237292  Achnatherum occidentale subsp. occidentale George K. Helmkamp, E. A. Helmkamp 2012-7-2 19308 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
  UCR237718  Deschampsia elongata George K. Helmkamp, E. A. Helmkamp 2012-7-14 19376 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
  UCR237719  Poa leptocoma subsp. leptocoma George K. Helmkamp, E. A. Helmkamp 2012-7-14 19388 Amador Northern Sierra Nevada Mountains, edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 miles north of Silver Lake 2317 Comment
  UCR237724  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2012-7-14 19378 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
  UCR240662  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2012-10-5 19985 Amador Northern Sierra Nevada Mountains Foothills, Fiddletown Road, 1.3 miles west of its junction with Shake Ridge Road 941 Comment
  UCR240727  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2012-10-5 19965 Amador Northern Sierra Nevada Mountains Foothills, beside Sutter Creek along the Sutter Creek-Volcano Road, 0.6 mile southwest of Meadowlark Lane 421 Comment
  UCR240932  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2012-6-26 19280 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 4.1 miles south of its junction with CA-88, S of Hwy 88/Carson Pass Hwy. and W of Lower Bear Reservoir 1518 Comment
  UCR241320  Bromus catharticus George K. Helmkamp, E. A. Helmkamp 2012-9-20 19875 Amador Northern Sierra Nevada Mountains Foothills, along Hwy E-26 (Red Corral/West Point-Pioneer Rd.) just north of the bridge over the North Fork Mokelumne River 613 Comment
  UCR241341  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
  UCR241370  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2012-6-26 19271 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.9 mile south of its junction with CA-88, S of Hwy 88/Carson Pass Hwy. and W of Lower Bear Reservoir 1617 Comment
  UCR241376  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-3-22 18635 Amador Northern Sierra Nevada Mountains Foothills, Bell Road, 1.2 miles east of CA-49 at private road to Rancho Cicada Retreat 371 Comment
  UCR241984  Digitaria sanguinalis George K. Helmkamp, E. A. Helmkamp 2012-9-7 19795 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
  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
  UCR242593  Gilia tricolor subsp. diffusa George K. Helmkamp, E. A. Helmkamp 2010-4-3 15795 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
  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
  UCR242638  Veronica peregrina George K. Helmkamp, E. A. Helmkamp 2010-4-3 15810 Amador Foothills Northern Sierra Nevada Mountains, Willow Creek Road, 1.2 miles north of its junction with CA-124, 3.7 mi. NE (22 deg. ) of Ione 175 Comment
  UCR242639  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2010-4-3 15811 Amador Foothills Northern Sierra Nevada Mountains, Willow Creek Road, 1.2 miles north of its junction with CA-124, 3.7 mi. NE (22 deg. ) of Ione 175 Comment
  UCR242831  Mimulus tilingii George K. Helmkamp, E. A. Helmkamp 2010-9-1 16877 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
  UCR242833  Castilleja tenuis George K. Helmkamp, E. A. Helmkamp 2010-9-1 16872 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
  UCR246585  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2012-6-6 19145 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 6.2 miles south of its junction with CA-88, 5.9 mi. SW (245 deg. ) of Bear River Reservoir dam 1438 Comment
  UCR248541  Chamaesyce serpyllifolia George K. Helmkamp, Elizabeth Helmkamp 2013-9-13 22287 Amador Northern Sierra Nevada Mountains Foothills, Volcano Road, 11.4 miles northeast of CA-49 in Sutter Creek, c. 0.4 mi SW of Volcano 608 Comment
  UCR248543  Woodwardia fimbriata George K. Helmkamp, Elizabeth Helmkamp 2013-9-13 22288 Amador Northern Sierra Nevada Mountains Foothills, Volcano Road; 0.1 mile northwest of the village of Volcano 671 Comment
  UCR250282  Blennosperma nanum var. nanum George K. Helmkamp 2013-3-14 20172 Amador Central Sierra Nevada Foothills, S edge of city of Plymouth; along CA-49, 1.1 miles southwest of its junction with Fiddletown Road 319 Comment
  UCR250605  Lupinus bicolor George K. Helmkamp, Mary Alice Barnes 2013-4-24 20382 Amador Northern Sierra Nevada Mountains Foothills, Along CA-26 (Red Corral/West Point-Pioneer Rd.), 2.8 miles southeast of its junction with CA-88 905 Comment
  UCR250607  Geranium carolinianum George K. Helmkamp, Mary Alice Barnes 2013-4-24 20380 Amador Northern Sierra Nevada Mountains Foothills, Along CA-26 (Red Corral/West Point-Pioneer Rd.), 2.8 miles southeast of its junction with CA-88 905 Comment
  UCR252934  Lotus nevadensis var. nevadensis George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20959 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.6 mile south of its junction with Hwy CA-88 1633 Comment
  UCR252952  Elymus glaucus George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20962 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.6 mile south of its junction with Hwy CA-88 1633 Comment
  UCR252984  Juncus exiguus George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20989 Amador Northern Sierra Nevada Mountains, Bear River Road, 1.5 road miles east of the dam for Lower Bear River Reservoir 1837 Comment
  UCR253090  Asclepias fascicularis George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22151 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 11.3 miles northeast of the town of Sutter Creek 582 Comment
  UCR253195  Cyperus eragrostis George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22159 Amador Sierra Nevada Mountains Foothills, Along CA-49, just northeast of its junction with Randolph Court, c. 1 km S of Plymouth 326 Comment
  UCR253197  Digitaria sanguinalis George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22138 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 4.8 miles northeast of the town of Sutter Creek 405 Comment
  UCR253520  Galium trifidum var. pusillum George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20970 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 Comment
  UCR253526  Antennaria rosea subsp. rosea George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20984 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 Comment
  UCR253543  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20957 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.6 mile south of its junction with Hwy CA-88 1633 Comment
  UCR257006  Bromus hordeaceus George K. Helmkamp, Mary Alice Barnes 2013-5-13 20577 Amador Sierra Nevada Mountains, Fiddletown Road, c. 9 miles northeast of its junction with E-16/Shenandoah Rd. near Plymouth 665 Comment
  UCR257033  Quercus chrysolepis George K. Helmkamp, E. A. Helmkamp 2013-11-11 22483 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 4.6 miles east of CA-49 in town of Sutter Creek 421 Comment
  UCR257083  Mimulus George K. Helmkamp, Mary Alice Barnes 2013-5-13 20599 Amador Sierra Nevada Mountains, Shake Ridge Road, 16.7 miles northeast of its junction with E-16 via Fiddletown Rd. 983 Comment
  UCR257213  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, Mary Alice Barnes 2013-5-13 20562 Amador Sierra Nevada Mountains Foothills, along E-16/Shenandoah Rd., 3.6 road miles south of River Pines, 4.15 air miles NE (39 deg. ) of Plymouth 517 Comment
  UCR257871  Phleum pratense George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19540 Amador Northern Sierra Nevada Mountains, Plasse Road, 0.4 mile south of its junction with CA-88, SW of Silver Lake 2262 Comment
  UCR258134  Eucephalus breweri George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19546 Amador Northern Sierra Nevada Mountains, Plasse Road, 0.4 mile south of its junction with CA-88, SW of Silver Lake 2262 Comment
  UCR259856  Cynodon dactylon George K. Helmkamp, Elizabeth Helmkamp 2013-10-18 22434 Amador Sierra Nevada Mountains Foothills, Plymouth, at the junction of Mineral Street and Mill Street, near Hwy CA-49 329 Comment
  UCR259885  Rorippa nasturtium-aquaticum George K. Helmkamp, Elizabeth Helmkamp 2013-10-18 22439 Amador Sierra Nevada Mountains Foothills, Plymouth, at the junction of Mineral Street and Mill Street, near Hwy CA-49 329 Comment
  UCR259887  Festuca perennis George K. Helmkamp, Elizabeth Helmkamp 2013-10-22 22453 Amador Sierra Nevada Mountains Foothills, Shenandoah Road, near Sobon Creek, 6.8 miles northeast of its junction with CA-49 in Plymouth 563 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
  SD239775  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18739 Butte Northern Sacramento Valley: Middle Noncut Road, 1.5 miles east of CA-70, ESE of Gridley. 17 Comment
  SD239921  Kickxia elatine G. K. Helmkamp, E. A. Helmkamp 2009-9-5 15596 Butte Sacramento Valley: Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi ENE (76a^z) of Biggs. 57 Comment
  UCD125844  Trichostema lanceolatum G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13077 Butte Northern Sacramento Valley: along Biggs East Hwy, 1.6 miles east of CA-99 in Biggs. 35 Comment
  UCR188504  Trichostema lanceolatum George K. Helmkamp, E. A. Helmkamp 2007-10-7 13077 Butte Northern Sacramento Valley, along Biggs East Highway, 1.6 miles east of CA-99 in Biggs 35 Comment
  UCR219091  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15580 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  UCR219093  Verbena litoralis George K. Helmkamp, E. A. Helmkamp 2009-9-5 15571 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  UCR219098  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15595 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  UCR219099  Trichostema lanceolatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15603 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  UCR219110  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2009-9-5 15596 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
  UCR237311  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2012-4-14 18761 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  UCR237313  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2012-4-14 18767 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  UCR237318  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2012-4-14 18732 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  UCR237319  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18731 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  UCR237324  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18743 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  UCR237713  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18747 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CAS-BOT-BC228651  Spergularia rubra G. K. Helmkamp; E. A. Helmkamp 2011-7-19 17847 Calaveras Northern Sierra Nevada Mountains Foothills: Forestry Route 5N75, 1.1 miles west of Boards Crossing bridge over North Fork Stanislaus River 1280 Comment
  CAS-BOT-BC311405  Hypochaeris radicata G. K. Helmkamp; E. A. Helmkamp 2008-5-29 13526 Calaveras Sierra Nevada Mountains: along the north side of CA-4 (Ebbetts Pass Rd.) at Avery 1024 Comment
  CAS-BOT-BC520339  Panicum dichotomiflorum George K. Helmkamp; E. A. Helmkamp 2012-9-21 19883 Calaveras Eastern San Joaquin Valley: Jenny Lind Road (Co. Rd J14), 0.2 mi S of jct with CA-26, WSW of Rancho Calaveras 99 Comment
  CAS-BOT-BC520353  Lotus purshianus var. purshianus George K. Helmkamp; Mary Alice Barnes 2013-5-17 20624 Calaveras Northern Sierra Nevada Mountains Foothills: Poloma Rd at its jct with Cosgrove Creek Rd, 3 mi NE (30 deg. ) of Valley Springs 278 Comment
  CAS-BOT-BC520354  Lythrum hyssopifolia George K. Helmkamp; Mary Alice Barnes 2013-5-17 20625 Calaveras Northern Sierra Nevada Mountains Foothills: Poloma Rd at its jct with Cosgrove Creek Rd, 3 mi NE (30 deg. ) of Valley Springs 278 Comment
  CAS-BOT-BC520356  Hypericum concinnum George K. Helmkamp; Mary Alice Barnes 2013-5-17 20631 Calaveras Northern Sierra Nevada Mountains Foothills: Poloma Rd at its jct with Cosgrove Creek Rd, 3 mi NE (30 deg. ) of Valley Springs 278 Comment
  CDA36241  Arabidopsis thaliana G. K. Helmkamp, E. A. Helmkamp 2007-4-26 11844 Calaveras Foothills, Northern Sierra Nevada Mountains; Chili Gulch near McSorley Ranch, along Calif. Hwy 49, 5.1 miles south of the Amador County line. 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
  RSA0012151  Limnanthes alba subsp. versicolor George K. Helmkamp, E. A. Helmkamp 2012-4-4 18679 Calaveras along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  RSA0012152  Poa annua George K. Helmkamp, E. A. Helmkamp 2012-4-4 18686 Calaveras along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  RSA0035680  Stellaria media George K. Helmkamp, Elizabeth A. Helmkamp 2013-5-24 20673 Calaveras Whiskey Slide Road, 2.6 miles south of its junction with Jesus Maria Road, 7.9 mi. SE (118 ) of Mokelumne Hill 561 Comment
  RSA0049942  Linum lewisii var. lewisii George K. Helmkamp, E. A. Helmkamp 2012-5-31 19082 Calaveras Along CA-26, 2.2 km NE (63 deg ) of Glencoe, 0.8 mile west of the crossing over the South Fork Mokelumne River 741 Comment
  RSA0053700  Bromus hordeaceus G. K. Helmkamp, E. A. Helmkamp 2013-5-24 20694 Calaveras Northern Sierra Nevada Mountains Foothills: Whiskey Slide Road, just east of West Murray Creek Road, c. 4.7 miles SE of Jesus Maria Road. 677 Comment
  RSA0093477  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2012-9-1 19741 Calaveras Northern Sierra Nevada Mountains Foothills. along CA-26 (West Point-Pioneer Rd.) on the south side of the North Fork Mokelumne River. 584 Comment
  RSA725736  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2006-10-8 11504 Calaveras Northern Sierra Nevada Mountains Foothills: along Hwy CA-26 southeast of West Point. 738 Comment
  RSA779399  Scirpus microcarpus George K. Helmkamp, E. A. Helmkamp 2009-7-30 15350 Calaveras Forestry Route 6N45, just north of its junction with CA-44, 15.1 miles northeast of Arnold 2018 Comment
  RSA794696  Centaurium venustum George K. Helmkamp, E. A. Helmkamp 2011-7-12 17703 Calaveras Winton Road, 6.7 miles east of its junction with CA-26 in West Point. 1192 Comment
  SD234744  Dichelostemma capitatum subsp. capitatum G. K. Helmkamp, E. A. Helmkamp 2007-3-17 11652 Calaveras Eastern Sacramento Valley: about 1 mile north of Burson on the road to south Comanche Reservoir. 152 Comment
  SD234869  Cerastium glomeratum G. K. Helmkamp, E. A. Helmkamp 2008-5-8 13420 Calaveras Sierra Nevada Mountains Foothills: Skull Flat road, 0.4 miles north of its junction with Winton Road, northeast of West Point. 822 Comment
  SD234886  Nemophila pulchella var. gracilis G. K. Helmkamp, E. A. Helmkamp 2008-4-11 13267 Calaveras Sierra Nevada Mountains Foothills: junction of Fricot City Road and Calavaritas road, southeast of the city of San Andreas. 433 Comment
  SD239908  Collinsia heterophylla G. 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 miles east (92.5a^z) of San Andreas (Calaveritas 7.5'Q) 512 Comment
  SD239910  Collinsia sparsiflora var. collina George K. Helmkamp, E. A. Helmkamp 2011-5-21 17342 Calaveras Northern Sierra Nevada Mountains Foothills: Railroad Flat Road at the junction with Cedar Ridge Road, 10.5 mi ENE (87a^z) of Mokelumne Hill (Rail Road Flat 7.5'Q) 846 Comment
  SD241027  Trifolium variegatum George K. Helmkamp, E. A. Helmkamp 2011-7-12 17710 Calaveras Northern Sierra Nevada Mountains Foothills: Winton Road, 6.7 miles east of its junction with CA-26 in West Point. 1192 Comment
  SD248428  Medicago lupulina George K. Helmkamp, E. A. Helmkamp 2013-11-9 22474 Calaveras Sierra Nevada Mountains Foothills: Gwin Mine Road, 1.3 miles north of Paloma Rd. at Paloma, 3.3 miles SW of Mokelumne Hill. 384 Comment
  SD255605  Aegilops triuncialis George K. Helmkamp 2014-5-17 22883 Calaveras Sierra Nevada Moutains Foothills: along CA-26, 2.6 miles NE of CA-49 at Mokelumne Hill (Mokelumne Hill 7.5'Q) 518 Comment
  SD260181  Eriophyllum lanatum var. achilleoides George K. Helmkamp, Mary Alice Barnes 2013-5-17 20620 Calaveras Northern Sierra Nevada Mountains Foothills: Poloma Road at its junction with Cosgrove Creek Road, 3 miles NE (30a^z) of Valley Springs. Area with scattered farm buildings. 278 Comment
  SD260186  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2012-9-1 19741 Calaveras Nothern Sierra Nevada Mountains Foothills: along CA-26 (West Point-Pioneer Rd.) on the south side of the North Fork Mokelumne River. 584 Comment
  SEINET13276682 Image available Trifolium dubium George K. Helmkamp, Mary Alice Barnes 2013-1 20641 Calaveras Northern Sierra Nevada Mountains Foothills: along CA-26, 0.3 mile northeast of Paloma Road, SW of Mokelumne Hill (Mokelumne Hill 7.5' Q.) 504 Comment
  SEINET13276815 Image available Aegilops triuncialis George K. Helmkamp, Mary Alice Barnes 2013-1 20639 Calaveras Northern Sierra Nevada Mountains Foothills: along CA-26, 0.3 mile northeast of Paloma Road, SW of Mokelumne Hill (Mokelumne Hill 7.5' Q.) 504 Comment
  SEINET3815511 Image available Lolium perenne George K. Helmkamp, E. A. Helmkamp 2012-5-15 18984 Calaveras Northern Sierra Nevada Mountain Foothills: at a crossing of Murray Creek along Murray Creek Road; 1.8 miles E of Pope Road in San Andreas 351 Comment
  SEINET4178606 Image available Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2011-3-29 17090 Calaveras East end San Joaquin Valley: along CA-26, 1.8 miles southwest of Valley Springs 206 Comment
  SEINET4178792 Image available Daucus carota George K. Helmkamp, E. A. Helmkamp 2010-10-6 17009 Calaveras Northern Sierra Nevada Mountains Foothills: along CA-26, 0.6 mile east of CA-49 at Mokelumne Hill. 483 Comment
  SEINET4178794 Image available Lonicera hispidula George K. Helmkamp, E. A. Helmkamp 2010-10-6 17010 Calaveras Northern Sierra Nevada Mountains Foothills: along CA-26, at the junction with Peregrine Road, 1.85 mi. east (84D) of Mokelumne Hill. 503 Comment
  SEINET4178835 Image available Geranium molle George K. Helmkamp, E. A. Helmkamp 2011-3-29 17109 Calaveras San Joaquin Valley: along Warren Road near Long Horn Ct., 0.4 mile north of junction with CA - 26. 56 Comment
  SEINET4691418  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2011-1 17106 Calaveras San Joaquin Valley: along Warren Road near Long Horn Ct., 0.4 mile north of junction with CA-26. 56 Comment
  SEINET998818  Daucus carota G. K. Helmkamp, E. A. Helmkamp 2006-1 11488 Calaveras Northern Sierra Nevada Mountains Foothills: along Hwy CA-26, 0.8 mi east of CA-49 in the vicinity of Mokulumne Hill 488 Comment
  UCD108912  Vicia sativa subsp. nigra G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11835 Calaveras Northern Sierra Nevada Mountains; along CA-49, 1 mile west of Mokelumne Hill, 1.7 miles south of the Amador County line. 370 Comment
  UCD110376  Hypericum perforatum subsp. perforatum G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-29 10780 Calaveras Northern Sierra Nevada foothills: along Hwy CA-26, 12.3 miles east of the Mokelumne Hill turnoff from Hwy CA-49. 640 Comment
  UCD119746  Amsinckia menziesii G. 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
  UCD127502  Foeniculum vulgare G. K. Helmkamp; E. A. Helmkamp 2007-9-24 13004 Calaveras Northern foothills, Sierra Nevada Mountains: in Rich Gulch along Gwin Mine Road, 1.2 miles north of Paloma. 329 Comment
  UCD60319  Aira caryophyllea G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11847 Calaveras Northern Sierra Nevada Mountains: Chili Gulch near McSorley Ranch, along Hwy. CA-49, 5.1 miles south of the Amador County line. 370 Comment
  UCR174196  Juncus effusus var. exiguus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10801 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 0.2 mile north of West Point 838 Comment
  UCR174928  Lathyrus latifolius George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10788 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 12.3 miles east of the Mokelumne Hill turnoff from Calif. Hwy 49 640 Comment
  UCR174929  Lonicera hispidula var. vacillans George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10791 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 12.3 miles east of the Mokelumne Hill turnoff from Calif. Hwy 49 640 Comment
  UCR182154  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2006-10-8 11481 Calaveras Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 26, 0.8 mi east of Calif. Hwy 49 in the vicinity of Mokulumne Hill 488 Comment
  UCR184934  Aira caryophyllea George K. Helmkamp, E. A. Helmkamp 2007-4-26 11847 Calaveras Foothills, Northern Sierra Nevada Mountains, Chili Gulch near McSorley Ranch, along Calif. Hwy 49, 5.1 miles south of the Amador County line 370 Comment
  UCR184952  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2007-4-26 11856 Calaveras Northern Sierra Nevada Mountains Foothills, Mokelumne Vista, 0.4 mile south of Calif. Hwy 49 and Mokelumne Hill 442 Comment
  UCR189434  Trifolium depauperatum var. truncatum George K. Helmkamp, E. A. Helmkamp 2007-3-17 11651 Calaveras Eastern Sacramento Valley, about 1 mile north of Burson on the road to south Comanche Reservoir 152 Comment
  UCR197275  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2008-4-11 13259 Calaveras Sierra Nevada Mountains Foothills, along Fricot City Road, 1.3 miles east of its junction with Calaveritas road 424 Comment
  UCR197390  Stellaria media George K. Helmkamp, E. A. Helmkamp 2008-3-18 13181 Calaveras Sierra Nevada Mountains Foothills, Jesus Maria Road, 0.5 mile south of CA-26, about 1.7 miles southeast of Mokelumne Hill 427 Comment
  UCR197396  Pityrogramma triangularis George K. Helmkamp, E. A. Helmkamp 2008-4-11 13256 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
  UCR197413  Plectritis brachystemon George K. Helmkamp, E. A. Helmkamp 2008-3-18 13198 Calaveras Sierra Nevada Mountains Foothills, along CA-49 at the crossing of the North Fork of the Calaveras river; 8.3 miles south of Mokelumne Hill 235 Comment
  UCR197418  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2008-3-22 13204 Calaveras San Joaquin Valley /Sierra Nevada Mountains Foothills, along CA-26 (joint with CA-12) 10.6 miles southwest of its junction with CA-49 213 Comment
  UCR197419  Arctostaphylos viscida subsp. mariposa George K. Helmkamp, E. A. Helmkamp 2008-3-18 13194 Calaveras Sierra Nevada Mountains Foothills, Happy Valley at mile 20 of CA-26; 2.6 miles east of Mokelumne Hill 503 Comment
  UCR197497  Sanicula bipinnata George 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
  UCR197500  Raphanus sativus George K. Helmkamp, E. A. Helmkamp 2008-3-22 13221 Calaveras San Joaquin Valley / Sierra Nevada Mountains Foothills, along CA-26, 3.7 miles southwest of Valley Springs at Lime Creek Road 143 Comment
  UCR197506  Luzula comosa George K. Helmkamp, E. A. Helmkamp 2008-5-8 13424 Calaveras Sierra Nevada Mountains Foothills, Skull Flat Road, 2.5 miles north of its junction with Winton Road, northeast of West Point 916 Comment
  UCR197533  Salix laevigata George K. Helmkamp, E. A. Helmkamp 2008-3-22 13227 Calaveras San Joaquin Valley / Sierra Nevada Mountains Foothills, along CA-26, 3.7 miles southwest of Valley Springs at Lime Creek Road 143 Comment
  UCR197538  Saxifraga californica George K. Helmkamp, E. A. Helmkamp 2008-3-22 13234 Calaveras Sierra Nevada Mountains Foothills, along Mokelumne Vista Road at the junction with CA-49, just west of Mokelumne Hill village 479 Comment
  UCR197539  Salix laevigata George K. Helmkamp, E. A. Helmkamp 2008-3-22 13232 Calaveras San Joaquin Valley / Sierra Nevada Mountains Foothills, along Farris Road, 0.2 mile southeast of CA-26, 5.7 miles southwest of Valley Springs 142 Comment
  UCR197581  Gnaphalium californicum George K. Helmkamp, E. A. Helmkamp 2008-5-29 13535 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road parallel to CA-4 and 0.4 mile from the road junction; at the Utica Creek crossing 759 Comment
  UCR197583  Ailanthus altissima George K. Helmkamp, E. A. Helmkamp 2008-5-29 13533 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road parallel to CA-4 and 0.4 mile from the road junction; at the Utica Creek crossing 759 Comment
  UCR197589  Penstemon laetus subsp. laetus George K. Helmkamp, E. A. Helmkamp 2008-5-29 13542 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road parallel to CA-4 and 0.4 mile from the road junction; at the Utica Creek crossing 759 Comment
  UCR197815  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2008-4-11 13241 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
  UCR197817  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2008-5-8 13419 Calaveras Sierra Nevada Mountains Foothills, Skull Flat road, 0.4 mile north of it junction with Winton Road, northeast of West Point 823 Comment
  UCR200940  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2008-9-30 14174 Calaveras Foothills, northern Sierra Nevada Mountains, Campo Seco Road at its junction with CA-49 462 Comment
  UCR207054  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2009-7-30 15308 Calaveras Sierra Nevada Mountains, Ottawa Drive, 0.1 mile south of its junction with CA-4, 1.2 miles northeast of Dorrington 1471 Comment
  UCR215771  Achillea millefolium George K. Helmkamp, E. A. Helmkamp 2009-7-30 15335 Calaveras Sierra Nevada Mountains, Ganns Meadow Drive just south of its junction with CA-4, 16.7 miles northeast of Arnold 2067 Comment
  UCR215773  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2009-7-30 15338 Calaveras Sierra Nevada Mountains, Ganns Meadow Drive just south of its junction with CA-4, 16.7 miles northeast of Arnold 2067 Comment
  UCR215778  Stachys ajugoides var. rigida George K. Helmkamp, E. A. Helmkamp 2009-7-30 15355 Calaveras Northern Sierra Nevada Mountains, Forestry Route 6N45, just north of its junction with CA-44, 15.1 miles northeast of Arnold 2018 Comment
  UCR215779  Lotus oblongifolius var. oblongifolius George K. Helmkamp, E. A. Helmkamp 2009-7-30 15354 Calaveras Northern Sierra Nevada Mountains, Forestry Route 6N45, just north of its junction with CA-44, 15.1 miles northeast of Arnold 2018 Comment
  UCR216029  Achnatherum lemmonii George K. Helmkamp, E. A. Helmkamp 2009-7-30 15328 Calaveras Sierra Nevada Mountains, Ganns Meadow Drive just south of its junction with CA-4, 16.7 miles northeast of Arnold 2067 Comment
  UCR216046  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2009-7-30 15352 Calaveras Northern Sierra Nevada Mountains, Forestry Route 6N45, just north of its junction with CA-44, 15.1 miles northeast of Arnold 2018 Comment
  UCR218138  Lupinus benthamii George K. Helmkamp, Amy Barnes 2010-5-7 15998 Calaveras Sierra Nevada Mountains Foothills, Mountain Ranch Road, 3.2 miles east of San Andreas 436 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
  UCR229553  Cryptantha affinis George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18062 Calaveras Northern Sierra Nevada Mountains, Black Springs Road [Forest Route 7N23], 1.7 miles north of its junction with CA Hwy 4 2058 Comment
  UCR229559  Mimulus jepsonii George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18049 Calaveras Northern Sierra Nevada Mountains, Black Springs Road [Forest Route 7N23], 1.7 miles north of its junction with CA Hwy 4 2058 Comment
  UCR230065  Capsella bursa-pastoris George K. Helmkamp, E. A. Helmkamp 2011-5-19 17317 Calaveras Sierra Nevada Foothills, Paloma Road, 3.1 miles southwest of its junction with CA-26, 4 miles NE (34 deg. ) of Valley Springs 352 Comment
  UCR230116  Lotus uliginosus George K. Helmkamp, E. A. Helmkamp 2011-7-19 17849 Calaveras Northern Sierra Nevada Mountains, Forest Route 5N75, 1.1 miles west of Boards Crossing bridge over North Fork Stanislaus River 1220 Comment
  UCR230144  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2011-5-21 17356 Calaveras Northern Sierra Nevada Mountains Foothills, Jesus Maria Road, 3.8 miles southeast of its junction with CA-26, 3.85 air mi. SE (105 deg. ) of Mokelumne Hill 427 Comment
  UCR232220  Erigeron strigosus George K. Helmkamp, E. A. Helmkamp 2010-8-3 16712 Calaveras Northern Sierra Nevada Mountains, along CA-4 across the highway from Calaveras State Park, 2.7 mi. NE (54 deg. ) of Arnold 1448 Comment
  UCR232248  Deschampsia elongata George K. Helmkamp, E. A. Helmkamp 2010-8-3 16698 Calaveras Northern Sierra Nevada Mountains, along CA-4, 0.8 mile southwest of the junction with Forest Route 7N23/ Black Creek Rd., NE of Dorrington 1854 Comment
  UCR232270  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2011-3-29 17108 Calaveras San Joaquin Valley, along Warren Road near Long Horn Ct., 0.4 mile north of junction with CA-26 56 Comment
  UCR233105A  Madia subspicata George K. Helmkamp, E. A. Helmkamp 2011-7-12 17737 Calaveras Sierra Nevada Mountains, Winton Road (Forest Route 7N03), 16.2 miles east of its junction with CA-26 in West Point 1668 Comment
  UCR233141  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2011-5-21 17338 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 854 Comment
  UCR233148B  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2011-7-12 17724 Calaveras Northern Sierra Nevada Mountains, Winton Road (Forest Route 7N03), 12.6 miles east of its junction with CA-26 in West Point 1503 Comment
  UCR233149B  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2011-7-12 17715 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 Comment
  UCR235494  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2012-5-15 18998 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
  UCR238421  Plagiobothrys greenei George K. Helmkamp, E. A. Helmkamp 2012-4-4 18680 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238423  Spergularia bocconi George K. Helmkamp, E. A. Helmkamp 2012-4-4 18682 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238428  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-4-4 18675 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238429  Plagiobothrys stipitatus var. micranthus George K. Helmkamp, E. A. Helmkamp 2012-4-4 18676 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238440  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2012-4-4 18694 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238446  Plantago erecta George K. Helmkamp, E. A. Helmkamp 2012-4-4 18700 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR241348  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2012-9-20 19872 Calaveras Northern Sierra Nevada Mountains Foothills, along Hwy CA-26, 6.2 miles NE of its junction with CA-49 at Mokelumne Hill 550 Comment
  UCR241349  Calycadenia multiglandulosa George K. Helmkamp, E. A. Helmkamp 2012-9-20 19871 Calaveras Northern Sierra Nevada Mountains Foothills, along Hwy CA-26, 6.2 miles NE of its junction with CA-49 at Mokelumne Hill 550 Comment
  UCR242606  Trifolium glomeratum George K. Helmkamp, E. A. Helmkamp 2011-6-17 17571 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 0.8 mile northeast of CA-26 at West Point 977 Comment
  UCR250335  Rumex crispus George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20706 Calaveras Northern Sierra Nevada Mountains Foothills, North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 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
  UCR250356  Aegilops triuncialis George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20713 Calaveras Northern Sierra Nevada Mountains Foothills, North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  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
  UCR250658  Eriophyllum confertiflorum var. confertiflorum George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20681 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
  UCR250659  Nemophila heterophylla George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20680 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
  UCR253251  Conyza canadensis George K. Helmkamp, Amy Barnes 2013-9-23 22315 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR253253  Dryopteris arguta George K. Helmkamp, Amy Barnes 2013-9-23 22313 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR253576  Digitaria sanguinalis George K. Helmkamp, Amy Barnes 2013-9-23 22305 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR256971  Eriophyllum lanatum var. croceum George K. Helmkamp 2014-5-17 22892 Calaveras Sierra Nevada Mountains Foothills, between Sandy Gulch and Glencoe along CA-26, 0.1 mile north of the bridge over South Fork Mokelumne River 608 Comment
  UCR256973  Melica torreyana George K. Helmkamp 2014-5-17 22890 Calaveras Sierra Nevada Mountains Foothills, between Sandy Gulch and Glencoe along CA-26, 0.1 mile north of the bridge over South Fork Mokelumne River 608 Comment
  UCR256978  Galium aparine George K. Helmkamp 2014-5-17 22901 Calaveras Sierra Nevada Mountains Foothills, c. 3 miles NE of Mokelumne Hill along CA-26, 2.4 miles east of the junction with Jesus Maria Road 527 Comment
  UCR256979  Allophyllum gilioides George K. Helmkamp 2014-5-17 22900 Calaveras Sierra Nevada Mountains Foothills, c. 3 miles NE of Mokelumne Hill along CA-26, 2.4 miles east of the junction with Jesus Maria Road 527 Comment
  UCR257038  Eriophyllum lanatum var. achilleoides George K. Helmkamp 2014-5-17 22886 Calaveras Sierra Nevada Mountains Foothills, along CA-26, 2.6 miles northeast of CA-49 at Mokelumne Hill 518 Comment
  UCR257039  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
  UCR258365  Potentilla glandulosa subsp. glandulosa George K. Helmkamp 2014-5-28 22929 Calaveras Northern Sierra Nevada Mountains, along Winton Road along the north side of Wilson Lake 1128 Comment
  UCR258367  Symphoricarpos albus var. laevigatus George K. Helmkamp 2014-5-28 22936 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
  UCR87693  Navarretia divaricata subsp. divaricata George K. Helmkamp, E. A. Helmkamp 1995-6-22 95- 4 - Calaveras Sierra Nevada Mtns, along Calif. Hwy 4, 2.5 mi NE of Arnold 1479 Comment
  SEINET269109  Disporum hookeri G. Helmkamp 1994-5-22 95 -3 Calaveras 2 mi N of Arnold along highway US-4. 1372 Comment
  RSA0011990  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2011-4-1 17119 Colusa Antelope Valley, along Maxwell-Sites Road, 1.8 miles southeast of Sites 77 Comment
  RSA799177  Lupinus albifrons var. collinus George K. Helmkamp, E. A. Helmkamp 2011-4-1 17121 Colusa Eastern foothills North Coast Ranges: Antelope Valley, along Maxwell-Sites Road, 0.4 mi southeast of Sites. 77 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
  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
  UCR201548  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2008-10-14 14266 Colusa Sacramento Valley, along River Road (generally following the Sacramento River), 8.4 miles north of Colusa 17 Comment
  UCR201549  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2008-10-14 14267 Colusa Sacramento Valley, along River Road (generally following the Sacramento River), 8.4 miles north of Colusa 17 Comment
  UCR201570  Echinochloa crus-galli George K. Helmkamp, E. A. Helmkamp 2008-10-14 14269 Colusa Sacramento Valley, along CA-20, 2 miles west of Meridian 14 Comment
  UCR206350  Elymus glaucus var. glaucus George K. Helmkamp, E. A. Helmkamp 2009-5-20 14743 Colusa Central Inner Coast Ranges, along CA-16 near Bear Creek, 1.6 miles south of the junction with CA-20 320 Comment
  UCR206356  Salix laevigata George K. Helmkamp, E. A. Helmkamp 2009-3-11 14380 Colusa Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams beside Salt Creek 107 Comment
  UCR206385  Plagiobothrys George K. Helmkamp, E. A. Helmkamp 2009-5-20 14751 Colusa Inner North Coast Ranges, along CA-16, 1.8 miles north of the Yolo County line 271 Comment
  UCR206401  Heteromeles arbutifolia George K. Helmkamp, E. A. Helmkamp 2009-3-11 14376 Colusa Inner North Coast Range Foothills, along CA-20, 14.3 miles southwest of Williams 375 Comment
  UCR206851  Plagiobothrys stipitatus var. micranthus George K. Helmkamp, E. A. Helmkamp 2009-3-11 14359 Colusa Sacramento Valley, along CA-20, 1.6 miles southwest of Colusa and just north of Colusa National Wildlife Refuge 15 Comment
  UCR233359  Amsinckia menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2011-4-1 17116 Colusa Western Sacramento Valley, along Maxwell Road, 2.1 miles east of Maxwell, near Delevan Wildlife Refuge 23 Comment
  UCR233439  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2011-4-1 17127 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 0.4 miles southeast of Sites 93 Comment
  UCR238747  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-2-9 18536 Colusa Sacramento Valley, River Road, 7.1 miles north of Colusa; east side of Sacramento River 18 Comment
  CAS-BOT-BC140641  Dittrichia graveolens G. K. Helmkamp; E. A. Helmkamp 2009-10-30 15714 El Dorado Sierra Nevada Mountains Foothills: Country Club Drive 0.1 mile east of its junction with Bass Lake Road, between El Dorado Hills and Cameron Park 343 Comment
  CAS-BOT-BC165912  Epilobium G. K. Helmkamp; E. A. Helmkamp 2009-8-19 15509 El Dorado Sierra Nevada Mountains: Wright's Lake Road, 8.6 miles north of its upper junction with Ice House Road 1785 Comment
  CAS-BOT-BC226931  Lessingia leptoclada George K. Helmkamp; William Barnes 2010-9-4 16949 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail at the junction with Bonetti Road 1765 Comment
  CAS-BOT-BC227105  Epilobium glaberrimum subsp. glaberrimum George K. Helmkamp; William Barnes 2010-9-4 16920 El Dorado Northern Sierra Nevada Mountains: Mehrten Spring Rd and continuing on Cat Creek Rd., 4.7 miles northwest of CA-88; Middle Fork of Cosumnes River 1620 Comment
  CAS-BOT-BC227437  Perideridia lemmonii George K. Helmkamp; William Barnes 2010-9-4 16935 El Dorado Northern Sierra Nevada Mountains: Tragedy Spring Road, 0.1 mile southwest of its upper junction with CA-88 2412 Comment
  CAS-BOT-BC227700  Layia gaillardioides G. 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
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Nov 26 2020
  CAS-BOT-BC364520  Senecio vulgaris G. K. Helmkamp; E. A. Helmkamp 2009-3-6 14345 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
  CAS-BOT-BC434226  Lupinus apertus George K. Helmkamp; Elizabeth Helmkamp 2013-6-19 20940 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.8 mile north of Mormon Emigrant Trail and near Jim Quinn Spring, N of Carson Pass Hwy. 2116 Comment
  CAS-BOT-BC434232  Ranunculus muricatus G. K. Helmkamp; E. A. Helmkamp 2008-4-25 13321 El Dorado Sierra Nevada Mountains Foothills: junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown. 674 Comment
  CAS-BOT-BC444024  Achnatherum occidentale subsp. pubescens George K. Helmkamp; Elizabeth Helmkamp 2013-7-31 22054 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 3.1 miles north of Ice House Resort, 0.18 mi. north of Jones Fork Power House Rd., 1.2 mi. NW of Ice House Reservoir. 468 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-BC444028  Asyneuma prenanthoides George K. Helmkamp; Elizabeth Helmkamp 2013-7-31 22061 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. 518 Comment
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Jul 26 2017
  CAS-BOT-BC523901  Acmispon micranthus George K. Helmkamp; Mary Alice Barnes 2013-4-30 20429 El Dorado Northern Sierra Nevada Mountains: Capps Crossing Rd., 0.2 mi S of its jct with Mormon Emigrant Trail 1260 Comment
  CDA25794  Modiola caroliniana G. K. Helmkamp, E. A. Helmkamp 2007-5-16 11994 El Dorado Northern Sierra Nevada Mountains Foothills; Lake Oaks Mobile Home Park, corner of Pleasant Valley Road and Patterson Drive, Diamond Springs. 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
  CDA36246  Cardamine hirsuta G. K. Helmkamp, E. A. Helmkamp 2007-2-24 11589 El Dorado Foothills, Northern Sierra Nevada Mountains; Lake Oaks Mobile Home Park, Pleasant Valley Road and Patterson Dr., east end of Diamond Springs. Comment
  CDA36373  Ranunculus muricatus G. K. Helmkamp, E. A. Helmkamp 2009-5-4 14589 El Dorado Sierra Nevada Mountains Foothills; Junction of Bonetti Road and Mormon Emigrant Trail, 3.6 miles east of Sly Park Rd. and Jenkinson Lake. Comment
  JEPS119462  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2012-2-25 18581 El Dorado Foothills, northern Sierra Nevada Mountains, SE of Placerville, Pleasant Valley Road, 1.4 miles northeast of Bucks Bar Road and at Gold Oak Charter School Comment
  OBI82194  Cirsium andersonii George K. Helmkamp, Elizabeth Helmkamp 2013-7-22 22001 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.8 mile north of its junction with CA-88 and near Jim Quinn Spring (Tragedy Spring 7.5' Q.) 2117 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
  OBI83556  Eucephalus breweri George K. Helmkamp, Elizabeth Helmkamp 2013-7-22 22002 El Dorado Silver Fork Road, 0.8 mile north of its junction with CA-88 and near Jim Quinn Spring 2117 Comment
  RSA0011980  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-9-1 18211 El Dorado Silver Fork Road, 4.7 miles south of its junction with US-50 in Kyburz, alongside Silver Fork American River 1500 Comment
  RSA0011986  Juncus effusus var. exiguus George K. Helmkamp, E. A. Helmkamp 2011-9-1 18216 El Dorado Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  RSA0012137  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2011-7-7 17653 El Dorado Capps Crossing (Bonnetti) Road, 2.8 miles south of its junction with Mormon Emigrant Trail 1297 Comment
  RSA0012197  Cryptantha affinis George K. Helmkamp, E. Helmkamp 2011-7-30 17911 El Dorado Omo Ranch Road at the junction with North-South Road, 0.67 mi. NW (300 deg ) of jct. with Hwy 88; 8.9 miles southeast of Omo Ranch 1457 Comment
  RSA0013405  Viola sheltonii George K. Helmkamp, E. A. Helmkamp 2012-5-18 19019 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
  RSA0022847  Ribes nevadense George K. Helmkamp, E. A. Helmkamp 2006-3-18 10079 El Dorado Northern Sierra Nevada Foothills: Corner of Pleasant Valley Road and Patterson Drive; W end of Diamond Springs. 537 Comment
  RSA0037294  Aster breweri George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-2 22083 El Dorado Mehrten Spring Road, 0.5 mile north of CA-88/Carson Pass Hwy 1793 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
  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
  RSA0045142  Eriogonum nudum var. deductum George K. Helmkamp, Elizabeth A. Helmkamp 2012-7-6 19322 El Dorado Ice House Road, 0.2 mile north of Ice House community, 10.7 miles north of US-50. 1683 Comment
  RSA0045229  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2006-9-29 11442 El Dorado Salmon Falls Rd just west of Calif. Hwy 49 and 4 miles south of Cool. 351 Comment
  RSA0045231  Catalpa speciosa George K. Helmkamp, E. A. Helmkamp 2006-9-29 11456 El Dorado Pleasant Valley Rd 0.1 mile east of Patterson Dr. 534 Comment
  RSA0045232  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2006-9-29 11441 El Dorado Placerville outskirts; Calif. Hwy 49, 2 miles north of jct with US-50 549 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
  RSA0116431  Pinus contorta var. murrayana George K. Helmkamp, E. A. Helmkamp 2008-8-1 13945 El Dorado Wright s Lake Road, 2.2 miles south of the entrance to Wright s Lake 2070 Comment
  RSA714085  Lotus unifoliolatus George K. Helmkamp, Elizabeth A. Helmkamp 2005-9-23 9907 El Dorado Wrights Lake Road (Forest Road 4) 2.1 road miles N o f US Highway 50 (ca. 5-6 mi. E of Kyburz). 1951 Comment
  RSA714087  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2005-8-9 9792 El Dorado Northern Sierra Nevada Foothills: El Dorado National Forest; WSW o Lake Tahoe; 7.4 miles N. of Union Reservoir along Ice House Road at the junction of Cheese Camp Road. 1765 Comment
  RSA714089  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2005-7-11 9673 El Dorado Northern Sierra Nevada Foothills: Cameron Park (E. of Sacramento, along US Highway 50); corner of Santos Street and Santos Court Road 370 Comment
  RSA715290  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2005-9-23 9925 El Dorado Northern Sierra Nevada Mts.: Wright's Lake Tie Road (Forest Road 32) 1 mile west of its junction with Wright's Lake Road (Forest Road 4) NNE of Kyburz 2043 Comment
  RSA748976  Adiantum jordanii George K. Helmkamp, E. A. Helmkamp 2007-4-30 11897 El Dorado hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  RSA750451  Muhlenbergia jonesii George K. Helmkamp, E. A. Helmkamp 2008-8-1 13956 El Dorado Forestry Route 42 at Silver Creek, 0.2 mile west of the junction with Wright's Lake Road 2021 Comment
  RSA750731  Euphorbia nutans George K. Helmkamp, E. A. Helmkamp 2008-9-16 14121 El Dorado Lake Oaks Mobile Home Park 530 Comment
  RSA751094  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2008-7-11 13776 El Dorado north side of CA-88, 2.1 miles northeast of the junction with Mormon Emigrant Trail 2340 Comment
  RSA752421  Fragaria vesca George K. Helmkamp, E. A. Helmkamp 2007-5-31 12247 El Dorado Forestry Route 42, 4.3 miles west of its junction with Wright's Lake Road, generally between Wright's Lake and Ice House Reservoir. 1753 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
  RSA755555  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2009-8-19 15491 El Dorado Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  RSA755907  Spiraea densiflora George K. Helmkamp, Amy Barnes 2009-7-8 15167 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
  RSA756065  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2009-4-4 14488 El Dorado Happy Valley Cut-off, 0.6 mile southeast of its junction with Mt. Aukum Road, c. 1.8 mi due south of Pleasant Valley 591 Comment
  RSA756754  Pseudobahia heermannii George K. Helmkamp, E. A. Helmkamp 2009-3-19 14414 El Dorado Rock Creek Road, 2.4 miles east of its junction with CA-193, above South Fork of American River 430 Comment
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Mar 28 2014
  RSA756975  Festuca George K. Helmkamp, Amy Barnes 2009-7-8 15128 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
  RSA756977  Allophyllum integrifolium George K. Helmkamp, Amy Barnes 2009-7-7 15117 El Dorado 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
  RSA779393  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2009-6-29 15083 El Dorado Ice House Road, 8.2 miles north of its junction with CA-50, c. 10.5 air miles NE (73 deg.) of Pollock Pines 1646 Comment
  RSA781177  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2010-4-17 15882 El Dorado Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  RSA781381  Juncus George K. Helmkamp, E. A. Helmkamp 2008-7-11 13768 El Dorado Tragedy Spring Road, 8.0 miles southwest of Kirkwood and 0.1 mile north of its junction with CA-88 2421 Comment
  RSA781944  Claytonia parviflora subsp. parviflora George K. Helmkamp, Mary Alice Barnes, Mary Jane Ganive 2010-6-13 16269 El Dorado along Forebay Road, just south of Forebay Bridge over the South Fork American River 588 Comment
  RSA782373  Linanthus bicolor George K. Helmkamp, E. A. Helmkamp 2010-4-23 15921 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
  RSA785465  Rumex crispus George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16326 El Dorado 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
  RSA785618  Viola macloskeyi George K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16585 El Dorado Southernmost point of Wright's Lake, 5.6 mi. NE (33 ) of Kyburz 2085 Comment
  RSA787260  Quercus kelloggii George K. Helmkamp, E. A. Helmkamp 2009-9-15 15628 El Dorado Omo Ranch Road, 3.9 miles west of Omo Ranch/junction with Slug Gulch Road [problem] 1043 Comment
  RSA789516  Mimulus jepsonii George K. Helmkamp, E. A. Helmkamp 2012-5-22 19063 El Dorado Forest Service Road 31 (Peavine Ridge Road), 1.3 miles wet of its junction with Ice House Canyon Road. 1582 Comment
  RSA792005  Clarkia virgata George K. Helmkamp, E. A. Helmkamp 2011-7-30 17906 El Dorado Omo Ranch Road, 2.25 mi. NW (295 deg ) of jct. with Hwy 88; 7.2 miles southeast of Omo Ranch 1346 Comment
  RSA792007  Campanula prenanthoides George K. Helmkamp, E. A. Helmkamp 2011-7-30 17916 El Dorado along North-South Road, 1.6 miles north of its junction with Omo Ranch Road, 0.95 mi. NNW (331 deg.) of Omo Ranch Rd. jct. with Hwy 88 1460 Comment
  RSA792183  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2011-7-30 17914 El Dorado Omo Ranch Road at the junction with North-South Road, 0.67 mi. NW (300 deg ) of jct. with Hwy 88; 8.9 miles southeast of Omo Ranch 1457 Comment
  RSA799175  Sambucus mexicana George K. Helmkamp, E. Helmkamp 2010-9-23 16951 El Dorado Northern Sierra Nevada Mtns: Peavine Ridge Road, 2.8 mi west of Ice House Road and at the junction with Forest Route 31 and Round Tent Canyon Road. 1581 Comment
  SBBG128866  Lomatium utriculatum G. K. Helmkamp, E. A. Helmkamp 2012-4-24 18829 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
  SBBG129049  Ceanothus integerrimus G. K. Helmkamp, E. A. Helmkamp 2013-6-15 20874 El Dorado Silver Fork Rd, 2.3 mi S of its jct with US-50 in Kyburz 1454 Comment
  SBBG129053  Boechera rectissima G. K. Helmkamp, E. A. Helmkamp 2013-6-15 20870 El Dorado Silver Fork Rd, 2.3 mi S of its jct with US-50 in Kyburz 1454 Comment
  SBBG129055  Lupinus albifrons var. collinus G. K. Helmkamp, E. A. Helmkamp 2013-6-15 20868 El Dorado Silver Fork Rd, 2.3 mi S of its jct with US-50 in Kyburz 1454 Comment
  SD197609  Juncus parryi G. K. Helmkamp, E. A. Helmkamp 2008-8-8 13962 El Dorado Echo Summit, west side of a Highway Maintenace Station and ca. 100 yards north of CA-50. 2256 Comment
  SD197907  Kelloggia galioides G. K. Helmkamp, Mary Alice Barnes and Amy Barnes 2008-7-28 13917 El Dorado Wright's Lake Road, 3.4 miles north of its junction with CA Highway 50. 2043 Comment
  SD197930  Erythranthe tilingii G. K. Helmkamp, E. A. Helmkamp 2008-8-1 13938 El Dorado Wright's Lake Road, 3.8 miles north of its junction with CA-50. 2076 Comment
  SD212419  Aira caryophyllea G. K. Helmkamp, Elizabeth Helmkamp 2006-5-1 10283 El Dorado Northern Sierra Nevada foothills; corner of Pleasant Valley Road and Patterson Drive; west end of Diamond Sprin gs. 537 Comment
  SD212501  Lessingia leptoclada G. K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9884 El Dorado Silver Fork, 2.1 miles west of Kyburz along US Highway 50. 1203 Comment
  SD212690  Persicaria punctata G. K. Helmkamp, Elizabeth Helmkamp 2005-8-14 9814 El Dorado Diamond Springs. Lake Oaks mobile home park 520 Comment
  SD212733  Diplacus layneae G. K. Helmkamp, Elizabeth Helmkamp 2005-8-9 9804 El Dorado El Dorado National Forest, west of Lake Tahoe-Ice House Road, 1.9 miles north of Wentworth Road, turnoff to Stump Meadows. 1648 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
  SD234881  Gentiana calycosa G. K. Helmkamp, E. A. Helmkamp 2008-8-30 14044 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail 2.4 miles northwest of its junction with CA-88 2271 Comment
  SD234898  Prunella vulgaris subsp. vulgaris G. K. Helmkamp, E. A. Helmkamp 2008-5-30 13548 El Dorado Sierra Nevada Mountain Foothills: Lake Oaks Mobile Home Park, Diamond Springs; corner of Patterson Dr. and CA-49 530 Comment
  SD235008  Potentilla glandulosa subsp. ashlandica G. K. Helmkamp, E. A Helmkamp 2007-6-8 12287 El Dorado Northern Sierra Nevada Mountains: Bonetti Road, 1.9 miles south of Mormon Emigrant Trail, at the bridge over Diamond Creek (Sly Park 7.5' Q) 1143 Comment
  SD235034  Kickxia spuria G. K. Helmkamp, E. A. Helmkamp 2006-9-29 11451 El Dorado Northern Sierra Nevada Mountains Foothills: Salmon Falls Rd just west of CA-49 and 4 miles south of Cool. 351 Comment
  SD236129  Juncus effusus G. K. Helmkamp, Elizabeth Helmkamp 2005-11-15 10034 El Dorado Northern Sierra Nevada Foothills: [E of Sacramento, N of Union Valley Reservoir]; Wentworth Springs Road, 5.9 [road] mi E of Uncle Toms Cabin 1566 Comment
  SD236214  Madia elegans subsp. elegans G. K. Helmkamp, Elizabeth Helmkamp 2005-9-9 9849 El Dorado Northern Sierra Nevada Foothills: E. of Sacramento; Squaw Hollow area at junction of Hank's Exchange Road and Ranch Road. 0.9 mi S of Pleasant Valley Road (Camino 7.5'Q) 683 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
  SD237261  Bromus carinatus G. K. Helmkamp, E. A. Helmkamp 2009-7-2 15092 El Dorado Sierra Nevada Mountains: Wright's Road at Chimney Flat, 3.4 miles north of junction with US-50. 2037 Comment
  SD237298  Anaphalis margaritacea G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15258 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
  SD237317  Eriophyllum lanatum var. croceum G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15255 El Dorado Sierra Nevada Mountains: Wrights Lake Road, 2.7 miles north of its junction with US-50, c. 0.25 mi. due S of Chimney Flat. 2000 Comment
  SD237421  Coronilla varia G. K. Helmkamp, Mary Alice Barnes & Mary Jane Gannibe 2010-7-6 16447 El Dorado Sierra Nevada Mountains: Silver Fork road, at the junction with US-50 in Kyburz. 1328 Comment
  SD237532  Epilobium densiflorum G. K. Helmkamp, E. A. Helmkamp 2009-7-1 15086 El Dorado Sierra Nevada Mountains Foothills: Lake Oaks Mobile Home Park, Diamond Springs, about 0.1 mile south of the junction of Patterson Drive and CA-49. 527 Comment
  SD237537  Gayophytum humile G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15271 El Dorado Sierra Nevada Mountains: Wright Lake Road, 1.2 miles south of Wrights Lake (Pyramid Peak 7.5'Q) 2073 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
  SD239511  Dichelostemma multiflorum G. K. Helmkamp, E. A. Helmkamp 2008-6-5 13591 El Dorado Sierra Nevada Mountains: Forbay Road, 5.3 miles north of its junction with Pony Express Trail in Pollock Pines (Slate Mountain 7.5'Q) 947 Comment
  SD239653  Plagiobothrys tenellus George K. Helmkamp, E. A. Helmkamp 2009-4-4 14495 El Dorado Sierra Nevada Mountains Foothills: Happy Valley Cut-off, 0.6 mile southeast of its junction with Mt. Aukum Road, c. 1.8 mile due south of Pleasant Valley (Camino 7.5'Q) 591 Comment
  SD239743  Lupinus apertus George K. Helmkamp, E. A. Helmkamp 2006-7-10 10923 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 (Kyburz 7.5'Q) 2012 Comment
  SD240840  Baccharis pilularis George K. Helmkamp, E. A. Helmkamp 2011-11-20 18467 El Dorado Northern Sierra Nevada Mountains Foothills: Salmon Falls Road, 1.6 miles south of the bridge of the American River (Pilot Hill 7.5'Q) 180 Comment
  SD240885  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2007-9-1 12859 El Dorado Northern Sierra Nevada Mountains Foothills: Happy Valley cut-off road 0.2 mile southeast of its junction with CA-E-16 (generally, northeast of Somerset) Camino 7.5'Q) 607 Comment
  SD240958  Scleranthus annuus George K. Helmkamp, E. A. Helmkamp 2012-4-24 18838 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 (66a^z) of Garden Valley (Garden Valley 7.5'Q) 705 Comment
  SD241179  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2011-9-13 18269 El Dorado Northern Sierra Nevada Mountains: Foster Meadow Road, 0.6 miles north of its junction with CA-88 (Bear River Reservoir 7.5'Q) 2136 Comment
  SD243090  Gnaphalium palustre George K. Helmkamp, E. A. Helmkamp 2011-9-24 18334 El Dorado Northern Sierra Nevada Mountains: Wentworth Springs Road at the junction with South Creek Road, 4.0 miles north of the Wentworth Springs /Loon Lake junction (Robbs Peak 7.5'Q) 1750 Comment
  SD243146  Trifolium variegatum George K. Helmkamp, E. A. Helmkamp 2011-9-24 18335 El Dorado Northern Sierra Nevada Mountains: Wentworth Springs Road at the junction with South Creek Road, 4.0 milse north of the Wentworth Springs/Loon Lake junction (Robbs Peqak 7.5'Q) 1750 Comment
  SD243153  Ribes cereum var. cereum George K. Helmkamp, E. A. Helmkamp 2010-8-20 16807 El Dorado Northern Sierra Nevada Mountains: Foster Meadow Road 0.6 mile west of Mormon Emigrant Trail in the Leek Spring area. Open seep area. 2232 Comment
  SD243169  Stachys palustris subsp. pilosa George K. Helmkamp, E. A. Helmkamp 2011-9-24 18336 El Dorado Northern Sierra Nevadaa Mountains: Weentworth Springs road at the junction with South Creek Road, 4.0 miles north of the Wentworth Springs / Loon Lake junction. 1750 Comment
  SD247421  Lupinus latifolius var. columbianus George Helmkamp, Elizabeth Helmkamp 2013-6-19 20936 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.8 mile north of Mormon Emigrant Trail and near Jim Quinn Spring, N of Carson Pass Hwy (Tragedy Spring 7.5'Q) 2116 Comment
  SD247467  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2013-6-15 20862 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz. 1454 Comment
  SD247500  Kelloggia galioides George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22087 El Dorado Northern Sierra Nevada Mountains: Mehrten Spring Road, 0.5 mile north of CA-88 (Peddler Hill 7.5'Q) 1793 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
  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
  SEINET11261896  Calyptridium monospermum George Helmkamp, E. A. Helmkamp 2011-7-30 17929 El Dorado Northern Sierra Nevada Mountains: North-South Road, 2.1 miles north of its junction with Omo Ranch Road, .9 mi. NNW (3511/4) of Omo Ranch Rd. jct. with Hwy 88 (Caldor 7.5' Q.); 0 1248 Comment
  SEINET11262282  Heuchera micrantha George K. Helmkamp, E. A. Helmkamp 2011-7-30 17937 El Dorado Northern Sierra Nevada Mountains: North-South Road, 5.5 miles north of its junction with Omo Ranch Road, east sided of bridge over Pi Pi Creek.; 0 1209 Comment
  SEINET11262289  Digitalis purpurea George Helmkamp, E. A. Helmkamp 2011-7-30 17932 El Dorado Northern Sierra Nevada Mountains: North-South Road, 2.1 miles north of its junction with Omo Ranch Road, .9 mi. NNW (3511/4) of Omo Ranch Rd. jct. with Hwy 88 (Caldor 7.5' Q.); 0 1248 Comment
  SEINET11401310  Carex feta George K. Helmkamp, Amy Barnes 2009-7-8 15158 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
  SEINET2440977  Trifolium incarnatum George K. Helmkamp, E. A. Helmkamp 2010-5-4 15945 El Dorado Sacramento Valley: just NE of Vacaville, N side of Vaca Valley Parkway, 0.1 mi W of its junction with Crescent Drive (Allendale 7.5'). 35 Comment
  SEINET2444417  Allophyllum divaricatum George K. Helmkamp, E. A. Helmkamp 2010-5-14 16027 El Dorado Sierra Nevada Mountains Foothills. Along CA-16 (Mt. Aukum Rd.), 1.8 mi NE of Somerset. 567 Comment
  SEINET2473440 Image available Eragrostis mexicana subsp. virescens George K. Helmkamp, E. A. Helmkamp 2007-1 12853 El Dorado Foothills, northern Sierra Nevada Mountains; Prospector Road, 0.1 mile north of Marshall Road near Indian Creek 2768 Comment
  SEINET2473460 Image available Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2007-1 12850 El Dorado Foothills, northern Sierra Nevada Mountains; Prospector Road, 0.1 mile north of Marshall Road near Indian Creek 2768 Comment
  SEINET3245630  Triteleia laxa G. K. Helmkamp, E. A. Helmkamp 2007-1 11916 El Dorado Foothills, Northern Sierra Nevada Mountains: along Hwy CA-49, 6.1 miles northwest of Placerville (Garden Valley 7.5') 454 Comment
  SEINET3245752  Eucephalus breweri G. K. Helmkamp, E. A. Helmkamp 2009-1 15242 El Dorado Sierra Nevada Mountains: Wrights Lake Road, 2.7 miles north of its junction with US-50, c. 0.25 mi. due S of Chimney Flat (Pyramid Peak 7.5') 1999 Comment
  SEINET3245856  Lepidium nitidum G. K. Helmkamp, E. A. Helmkamp 2007-1 11685 El Dorado Foothills, Northern Sierra Nevada Mountains: hills bordering the east end of Sacramento Valley; Bass Lake Road at the southeast end of Bass Lake. 381 Comment
  SEINET3245889  Polygonum lapathifolium G. K. Helmkamp, E. A. Helmkamp 2007-1 12921 El Dorado Foothills, northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Diamond Springs; near junction of CA-49 and Patterson Drive. 530 Comment
  SEINET3245945  Euthamia occidentalis G. K. Helmkamp, E. A. Helmkamp 2009-1 15673 El Dorado Sierra Nevada Mountains Foothills: Lake Oaks Mobile Home Park, Patterson Dr. and CA-49 in Diamond Springs (Placerville 7.5') 520 Comment
  SEINET3271549 Image available Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2007-4-20 11777 El Dorado Foothills, Northern Sierra Nevada Mountains; along Green Valley Road at junction of Jet Quartz Creek Rd., between Four Corners and Gold Hill 410 Comment
  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
  SEINET3271597 Image available Arctostaphylos viscida subsp. viscida George K. Helmkamp, E. A. Helmkamp 2007-3-5 11596 El Dorado Foothills, northern Sierra Nevada Mountains; Granite Canyon, along Lotus Road; about 3 miles south of Calif. Hwy 49 372 Comment
  SEINET3282774 Image available Clarkia affinis George K. Helmkamp, E. A. Helmkamp 2007-5-1 11918 El Dorado Foothills, Northern Sierra Nevada Mountains; along Hwy CA-49, 6.1 miles northwest of Placerville. 454 Comment
  SEINET3282804 Image available Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2009-6-3 14884 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
  SEINET3411990 Image available Deschampsia danthonioides George K. Helmkamp, E. A. Helmkamp 2006-7-7 10840 El Dorado Northern Sierra Nevada Mtns: Wrights's Lake Road, 3.2 miles N of Hwy US-50, NE of Kyburz 1981 Comment
  SEINET3828358  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 2010-1 15762 El Dorado Sierra Nevada Mountains Foothills: junction of County Road 2233 and Missouri Flat Road, southwest edge of Placerville. 7.5 532 Comment
  SEINET3860095  Lotus purshianus var. purshianus George K. Helmkamp, Mary Alice Barnes; Mary Jane Ganibe 2010-7-6 16466 El Dorado Sierra Nevada Mountains: Silver Fork Road, 4.1 miles south of its junction with US-50 in Kyburz.; 0 1500 Comment
  SEINET3860175  Trifolium dubium George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16125 El Dorado Sierra Nevada Mountains Foothills: Slug Gulch Road, 2.9 miles east of its junction with Perry Creek raod.; 0 1012 Comment
  SEINET3860251  Astragalus bolanderi George K. Helmkamp, E. A. Helmkamp 2010-7-23 16615 El Dorado Northern Sierra Nevada Mountains: Forestry Route 42, 0.2 mile west of its junction with Wright's Lake Road and beside Silver Creek, 4 miles NE of Kyburz.; 0 2021 Comment
  SEINET3885034  Calochortus coeruleus George K. Helmkamp, E. A. Helmkamp 2008-6-9 13648 El Dorado Northern Sierra Nevada Mountains: Cat Creek Road, 0.1 mile north of its junction with CA-88, jct. is 4.2 miles east of Cook's Station (Peddler Hill 7.5').; 0 1652 Comment
  SEINET3909481  Cyperus eragrostis George K. Helmkamp, E. A. Helmkamp 2009-8-14 15464 El Dorado Sierra Nevada Mountains Foothills: junction of Sand Ridge Road and Cutaway Lane, 2.0 miles west of Bucks Bar Road.; 0 642 Comment
  SEINET4691400  Phacelia hydrophylloides George K. Helmkamp, E. A. Helmkamp 2010-1 16716 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trial, at Jim Quinn Spring. 2136 Comment
  SEINET4691460  Erigeron breweri George K. Helmkamp, E. A. Helmkamp 2010-1 16818 El Dorado Northern Sierra Nevada Mountains: Near abandoned Iron Mountain ski resort, road spur parallel to Mormon Emigrant Trail about 0.2 mile west of its juction 2237 Comment
  SEINET7249328  Madia minima George K. Helmkamp, E. A. Helmkamp 2012-1 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
  SEINET959164  Penstemon laetus var. laetus G. K. Helmkamp, E. A. Helmkamp 2005-1 9708 El Dorado Northern Sierra Nevada Foothills: Pollock Pines area just S of US Highway 50 along County Road #5 (Pollock Pines 7.5' Q) 1158 Comment
  SEINET959166  Plantago lanceolata G. K. Helmkamp, E. A. Helmkamp 2005-1 9700 El Dorado Northern Sierra Nevada Foothills: 30 mi Sw of Lake Tahoe; 1 mi E of Jenkinson Lake along Mormon Emigrant Road (County Highway 5) (Sly Park7.5' Q.) 1219 Comment
  SEINET998825  Potentilla gracilis var. fastigiata G. K. Helmkamp, E. A. Helmkamp 2006-1 11035 El Dorado Northern Sierra Nevada Mtns: 2.5 miles south of Hwy US-50, beside Philips on Sierra-at-Tahoe Rd 2225 Comment
  UC1930981  Juncus ensifolius G. K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9882 El Dorado Northern Sierra Nevada Foothills: Silver Fork, 2.1 mi west of Kyburz along US Highway 50 Comment
  UCD100189  Calandrinia ciliata G. K. Helmkamp; E. A. Helmkamp 2007-4-30 11880 El Dorado Northern Sierra Nevada Mountains: hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  UCD100812  Claytonia perfoliata subsp. perfoliata G. K. Helmkamp; Elizabeth Helmkamp 2006-4-25 10221 El Dorado Northern Sierra Nevada Foothills; E of Sacramento and just SW of Placerville. Forni road between US Hwy 50 and Diamond Springs, at Weber Creek. 488 Comment
  UCD101320  Eriogonum marifolium G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10846 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz. 2049 Comment
  UCD103416  Geranium molle G. K. Helmkamp; Elizabeth Helmkamp 2006-4-20 10202 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
  UCD103622  Gayophytum diffusum subsp. parviflorum G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11040 El Dorado Northern Sierra Nevada Mountains. 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd. 2226 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
  UCD104304  Acmispon parviflorus G. K. Helmkamp; E. A. Helmkamp 2007-5-9 11978 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 2.0 miles northeast of US-50, c. 1.25 mi. NE of Riverton. 1220 Comment
  UCD106228  Navarretia leptalea G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11032 El Dorado Northern Sierra Nevada Mountains, 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd. 2226 Comment
  UCD106442  Lathyrus sulphureus G. K. Helmkamp 2006-5-20 10494 El Dorado Northern Sierra Nevada Foothills: Along CA Hwy 193, 0.4 mi. S of Kelsey. 604 Comment
  UCD107252  Lupinus bicolor G. K. Helmkamp; E. A. Helmkamp 2007-5-1 11911 El Dorado Northern Sierra Nevada Mountains; access to road to South Fork American River along CA-49, 4.4 miles northwest of Coloma. 207 Comment
  UCD107831  Medicago polymorpha G. K. Helmkamp; E. A. Helmkamp 2007-4-20 11774 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
  UCD108253  Lupinus lepidus var. confertus G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10992 El Dorado Northern Sierra Nevada Mtns: Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2104 Comment
  UCD108570  Lupinus lepidus var. sellulus G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10951 El Dorado Northern Sierra Nevada Mtns. Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges. 1960 Comment
  UCD108576  Lupinus lepidus var. sellulus G. K. Helmkamp; E. A. Helmkamp 2007-8-9 12716 El Dorado Northern Sierra Nevada Mountains: Wright's Lake; south side of the lake at the entrance to the campground. 2131 Comment
  UCD111296  Trifolium longipes subsp. hansenii G. K. Helmkamp 2007-6-29 12445 El Dorado Northern Sierra Nevada Mountains: Kirkwood Lake, about 0.5 mile north of CA-88 on the road to the campground. 2351 Comment
  UCD112653  Ceanothus prostratus G. K. Helmkamp; Elizabeth A. Helmkamp 2006-5-31 10600 El Dorado Northern Sierra Nevada: Mormon Emigrant Trail, 6.0 miles east of its junction with Sly Park Road (Jenkinson Lake). 1055 Comment
  UCD113034  Drymocallis lactea var. austiniae G. 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
  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
  UCD114832  Erysimum cheiranthoides G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-10 10697 El Dorado Northern Sierra Nevada Mountains; Ice House Road at the turnoff to Loon Lake. 1982 Comment
  UCD115110  Hirschfeldia incana G. K. Helmkamp; E. A. Helmkamp 2007-9-19 12979 El Dorado Northern Sierra Nevada Mountains: along Greenstone Road just south of its junction with US-50 (east of Shingle Springs). 427 Comment
  UCD115564  Draba verna G. K. Helmkamp; E. A. Helmkamp 2007-3-11 11615 El Dorado Northern Sierra Nevada Mountains: Traverse Creek Road at the creek crossing, 2.4 miles NE of CA-193. 518 Comment
  UCD117171  Cornus nuttallii G. K. Helmkamp; E. A. Helmkamp 2007-5-9 11987 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
  UCD121683  Galium aparine G. K. Helmkamp; Elizabeth Helmkamp 2006-4-25 10220 El Dorado Northern Sierra Nevada Foothills: E of Sacramento and just SW of Placerville. Forni road between US Hwy 50 and Diamond Springs, at Weber Creek. 488 Comment
  UCD121968  Kelloggia galioides G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10862 El Dorado Northern Sierra Nevada Mtns: Wright's Lake Road, 4.1 miles north of Hwy. US-50, northeast of Kyburz. 2049 Comment
  UCD121969  Kelloggia galioides G. K. Helmkamp; E. A. Helmkamp 2006-7-31 11056 El Dorado Northern Sierra Nevada Mountains; along Wright's Lake Road (Forestry Route 4), 3.3 miles north of Highway US-50. 2049 Comment
  UCD122664  Mimulus microphyllus G. K. Helmkamp; E. A. Helmkamp 2005-7-31 9721 El Dorado Northern Sierra Nevada Foothills: Junction of Ice House Road and CA Highway 50 (E of Pollock Pines). 1006 Comment
  UCD122673  Mimulus microphyllus G. K. Helmkamp; E. A. Helmkamp 2007-5-1 11926 El Dorado Northern Sierra Nevada Mountains: along Hwy CA-49, 2.5 miles northwest of US-50 in Placerville. 549 Comment
  UCD123404  Triphysaria eriantha subsp. eriantha G. K. Helmkamp; E. A. Helmkamp 2007-3-31 11729 El Dorado Northern Sierra Nevada Mountains: along CA-193, 1.8 miles east of its junction with Ca-49 at Cool. 488 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
  UCD126684  Nicotiana acuminata var. multiflora G. K. Helmkamp; E. A. Helmkamp 2006-10-20 11547 El Dorado Northern Sierra Nevada Mountain Foothills; 0.6 mile northwest of Pleasant Valley along Pleasant Valley Road. 756 Comment
  UCD132202  Eriophyllum lanatum var. achilleoides G. K. Helmkamp; Elizabeth Helmkamp, Amy Barnes 2007-6-20 12367 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
  UCD132305  Eurybia integrifolia G. K. Helmkamp; E. A. Helmkamp 2007-8-9 12718 El Dorado Northern Sierra Nevada Mountains: Wright's Lake; south side of the lake at the entrance to the campground. 2131 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
  UCD135119  Pseudotsuga menziesii var. menziesii G. K. Helmkamp; E. A. Helmkamp 2007-2-24 11590 El Dorado Northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Pleasant Valley Road and Patterson Dr., east end of Diamond Springs. 536 Comment
  UCD136495  Symphyotrichum foliaceum G. K. Helmkamp; E. A. Helmkamp 2006-7-31 11092 El Dorado Northern Sierra Nevada Mountains. 0.3 mile W of the junction of Wright's Lake Road (Forestry Route 4) and the road form Ice House Reservoir. 2037 Comment
  UCD136642  Aesculus californica G. K. Helmkamp 2006-5-20 10493 El Dorado Northern Sierra Nevada Foothills: Along CA Hwy 193, 1.4 miles north of Placerville. 427 Comment
  UCD137073  Wyethia helenioides G. K. Helmkamp; E. A. Helmkamp 2007-5-7 11962 El Dorado Northern Sierra Nevada Mountains: Pedro Hills Road, 0.5 mile west of its junction with CA-49, junction of roads 5.3 miles south of Cool. 311 Comment
  UCD137077  Wyethia mollis G. K. Helmkamp; E. A. Helmkamp 2006-7-31 11099 El Dorado Northern Sierra Nevada Mountains. Junction of Wright's Lake Road (Forestry Route 4) and the road from Ice House Reservoir. 2018 Comment
  UCD137635  Valeriana californica G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-19 10753 El Dorado Northern Sierra Nevada Mountains, 8 miles east of Ice House Road on the road to Wright's Lake. 2000 Comment
  UCD137705  Isotoma fluviatilis G. K. Helmkamp; E. A. Helmkamp 2007-5-11 11992 El Dorado Northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Diamond Springs. 524 Comment
  UCD139341  Triteleia ixioides subsp. scabra G. 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
  UCD139370  Triteleia laxa G. K. Helmkamp; E. A. Helmkamp 2007-5-7 11963 El Dorado Northern Sierra Nevada Mountains: Pedro Hills Road, 0.5 mile west of its junction with CA-49, junction of roads 5.3 miles south of Cool. 311 Comment
  UCD140973  Carex vesicaria G. K. Helmkamp; E. A. Helmkamp 2007-8-21 12793 El Dorado Northern Sierra Nevada Mountains: Ice House Road at the junction to the lower campground and boat ramp of Loon Lake. 1976 Comment
  UCD141195  Cyperus niger G. K. Helmkamp; E. A. Helmkamp 2006-11-15 11579 El Dorado Northern Sierra Nevada Mountains: Lake Oaks mobile home park west of Diamond Springs south of junction of Pleasant Valley Road and Patterson Drive. 537 Comment
  UCD141251  Scirpus microcarpus G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11007 El Dorado Northern Sierra Nevada Mountains: Echo Summit along Hwy US-50; at entrance to the road maintenance station. 2245 Comment
  UCD57414  Briza minor G. K. Helmkamp; Elizabeth Helmkamp 2006-5-19 10480 El Dorado Northern Sierra Nevada. Lake Oaks mobile home park. Corner of Pleasant Valley Road and Patterson Drive. Diamond Springs. 536 Comment
  UCD61694  Elymus elymoides subsp. elymoides G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10953 El Dorado Northern Sierra Nevada Mtns. Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges. 1959 Comment
  UCD62735  Elymus trachycaulus subsp. subsecundus G. K. Helmkamp; E. A. Helmpkamp 2006-9-12 11379 El Dorado Northern Sierra Nevada Mountains: Along Hwy CA-89, 1.2 miles west of the Alpine County line. General area of Luther Pass and Grass Lake. 2362 Comment
  UCD67032  Agrostis pallens G. K. Helmkamp; E. A. Helmkamp 2007-9-11 12923 El Dorado Northern Sierra Nevada Mountains: Along Hwy. US-50, 0.4 mile southwest of Phillips. 1829 Comment
  UCD92717  Setaria pumila G. 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
  UCD95818  Ranunculus alismifolius var. alismellus G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-19 10754 El Dorado Northern Sierra Nevada Mountains, 8 miles east of Ice House Road on the road to Wright's Lake. 2000 Comment
  UCD96755  Enemion stipitatum G. K. Helmkamp; E. A. Helmkamp 2007-5-9 11973 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 3.2 miles north of Ice House, near Jones Place. 1000 Comment
  UCD96810  Ranunculus occidentalis G. K. Helmkamp; E. A. Helmkamp 2007-4-30 11884 El Dorado Foothills, Northern Sierra Nevada Mountains: hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  UCD98510  Scleranthus annuus subsp. annuus G. K. Helmkamp; E. A. Helmkamp 2007-3-23 11687 El Dorado Northern Sierra Nevada Mountains; bordering east end of Sacramento Valley. Bass Lake Road at the southeast end of Bass Lake. 381 Comment
  UCD99399  Stellaria media G. K. Helmkamp; Elizabeth Helmkamp 2006-4-25 10222 El Dorado Northern Sierra Nevada Foothills; E of Sacramento and just SW of Placerville. Forni road between US Hwy 50 and Diamond Springs, at Weber Creek. 488 Comment
  UCD99400  Stellaria media G. K. Helmkamp; Elizabeth A. Helmkamp 2006-5-31 10563 El Dorado Northen Sierra Nevada Foothills; along Hwy US-50 at Bridal Veil Falls, east of Pacific House. 1002 Comment
  UCR15427  Carex jonesii George K. Helmkamp 1977-9-1 s.n. El Dorado Sierra Nevada Mtns., Grass Lake, west of Luther Pass 2348 Comment
  UCR170325  Brassica geniculata George K. Helmkamp, Elizabeth Helmkamp 2005-11-15 10031 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
  UCR170327  Trifolium obtusiflorum George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9879 El Dorado Northern Sierra Nevada Foothills, Silver Fork, 2.1 mi west of Kyburz along US Highway 50 1220 Comment
  UCR170420  Sonchus oleraceus George K. Helmkamp, Elizabeth Helmkamp 2005-11-15 10028 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
  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
  UCR170470  Agrostis stolonifera George K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9870 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
  UCR170476  Cichorium intybus George K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9863 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
  UCR170647  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp 2005-8-9 9777 El Dorado Northern Sierra Nevada Foothills, WSW of Lake Tahoe; NE of Union Valley Reservoir along Ice House Road 1576 Comment
  UCR170662  Lindernia dubia var. anagallidea George K. Helmkamp, E. A. Helmkamp 2005-8-14 9813 El Dorado Northern Sierra Nevada Foothills, Diamond Springs. Lake Oaks mobile home park 521 Comment
  UCR170794  Viola lobata var. lobata George K. Helmkamp, E. A. Helmkamp 2005-8-9 9778 El Dorado Northern Sierra Nevada Foothills, WSW of Lake Tahoe; NE of Union Valley Reservoir along Ice House Road 1576 Comment
  UCR170812  Adenocaulon bicolor George K. Helmkamp, E. A. Helmkamp 2005-8-9 9781 El Dorado Northern Sierra Nevada Foothills, WSW of Lake Tahoe; NE of Union Valley Reservoir along Ice House Road 1576 Comment
  UCR170982  Alnus rhombifolia George K. Helmkamp, E. A. Helmkamp 2006-1-16 10052 El Dorado Northern Sierra Nevada Foothills, Corner of Pleasant Valley Road and Patterson Drive, at the W end of Diamond Springs 537 Comment
  UCR171038  Clarkia rhomboidea George K. Helmkamp, E. A. Helmkamp 2005-7-31 9719 El Dorado Northern Sierra Nevada Foothills, Junction of Ice House Road and Calif. Highway 50, east of Pollock Pines 1006 Comment
  UCR171039  Juncus effusus George K. Helmkamp, E. A. Helmkamp 2005-7-31 9722 El Dorado Northern Sierra Nevada Foothills, Junction of Ice House Road and Calif. Highway 50, east of Pollock Pines 1006 Comment
  UCR171320  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2005-7-11 9687 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
  UCR171326  Lathyrus latifolius George K. Helmkamp, E. A. Helmkamp 2005-7-11 9681 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
  UCR171621  Hypericum perforatum George K. Helmkamp, E. A. Helmkamp 2005-7-11 9689 El Dorado Northern Sierra Nevada Foothills, 30 miles SW of Lake Tahoe; 1 mile east of Jenkinson Lake along Mormon Emigrant Road/County Highway 5 1220 Comment
  UCR171623  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2005-7-11 9673 El Dorado Northern Sierra Nevada Foothills, Cameron Park (E of Sacramento, along US Highway 50); corner of Santos Street and Santos Court Road 370 Comment
  UCR172638  Arabidopsis thaliana George K. Helmkamp, Elizabeth Helmkamp 2006-4-20 10209 El Dorado Northern Sierra Nevada Foothills, Between N and Middle forks of Cosumnes River; Junction of Sand Ridge Road and Cutaway Lane, 2.1 mi SW of Somerset 665 Comment
  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
  UCR173184  Bromus carinatus George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10525 El Dorado Northern Sierra Nevada Foothills, NE of Georgetown; along Bottlehill Road, 1.4 mi. N of Wentworth Springs Road 1006 Comment
  UCR173315  Festuca myuros George K. Helmkamp, Elizabeth Helmkamp 2006-4-25 10216 El Dorado Northern Sierra Nevada Foothills, E of Sacramento and just SW of Placerville. Forni road between US Hwy 50 and Diamond Springs, at Weber Creek 488 Comment
  UCR173317  Cynosurus echinatus George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10517 El Dorado Northern Sierra Nevada Foothills, NE of Georgetown; along Bottlehill Road, 1.4 mi. N of Wentworth Springs Road 1006 Comment
  UCR173672  Barbarea orthoceras George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10171 El Dorado Northern Sierra Nevada Foothills, E of Sacramento, between N and Middle Forks of the Cosumnes River; Sand Ridge Road, 1.9 mi. east of Calif. Hwy 49 454 Comment
  UCR173715  Triteleia ixioides subsp. scabra George K. Helmkamp, Elizabeth Helmkamp 2006-5-20 10496 El Dorado Northern Sierra Nevada Foothills, Along Calif. Hwy 193, 0.4 mi. south of Kelsey 604 Comment
  UCR173717  Lathyrus sulphureus George K. Helmkamp, Elizabeth Helmkamp 2006-5-20 10510 El Dorado Northern Sierra Nevada Foothills, c. 5 air mi off Calif. Hwy 193, east of Georgetown; 1.7 mi. N of Wentworth Springs Road on Bottlehill Road (junction just east of Balderson Station) 973 Comment
  UCR173742  Ranunculus occidentalis George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10742 El Dorado Northern Sierra Nevada Mountains, 5.5 miles east of Ice House Road on the road to Wright's Lake 1860 Comment
  UCR173793  Lupinus latifolius var. columbianus George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10590 El Dorado Northern Sierra Nevada foothills, along Hwy US-50, 0.6 mile east of White Hall 1055 Comment
  UCR173798  Mimulus guttatus George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10591 A El Dorado Northern Sierra Nevada foothills, along Hwy US-50, 0.6 mile east of White Hall 1055 Comment
  UCR173799  Poa George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10603 El Dorado Northern Sierra Nevada foothills, Mormon Emigrant Trail, 6.0 miles east of its junction with Sly Park Road (Jenkinson Lake) 1055 Comment
  UCR173822  Bromus madritensis George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10640 El Dorado Northern Sierra Nevada foothills, along Calif. Hwy 193, 0.6 mile west of its junction with Rock Creek Road 485 Comment
  UCR173896  Collinsia torreyi George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10757 El Dorado Northern Sierra Nevada Mountains, 1.1 miles west of Wright's Lake 2027 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
  UCR173907  Arctostaphylos manzanita subsp. manzanita George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10772 El Dorado Northern Sierra Nevada Mountains, about 1.3 miles north of Hwy US-50 on Wrights Lake Road 1677 Comment
  UCR173951  Ranunculus alismifolius var. alismifolius George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10761 El Dorado Northern Sierra Nevada Mountains, 1.1 miles west of Wright's Lake 2027 Comment
  UCR173953  Prunus emarginata George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10763 El Dorado Northern Sierra Nevada Mountains, 2 miles west of Wright's Lake at the junction with Wright's Lake Road (6 miles north of Hwy US-50) 2003 Comment
  UCR173958  Linanthus ciliatus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10725 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
  UCR174200  Festuca ovina George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10585 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road just north of Hwy US-50 1665 Comment
  UCR174288  Mimulus moschatus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10719 El Dorado Northern Sierra Nevada Mountains, 0.8 mile east of Ice House Road on the road to Wright's Lake 1672 Comment
  UCR174289  Viola lobata var. lobata George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10720 El Dorado Northern Sierra Nevada Mountains, 0.8 mile east of Ice House Road on the road to Wright's Lake 1672 Comment
  UCR175280  Briza minor George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10638 A El Dorado Northern Sierra Nevada foothills, Rock Creek Road at the crossing over Rock Creek, 6.8 miles east of the junction with Calif. Hwy 193 412 Comment
  UCR175482B  Madia minima George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-10 10694 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 0.2 mile north of its junction with Wentworth Springs Road 1620 Comment
  UCR175734  Eriogonum incanum George K. Helmkamp, E. A. Helmkamp 2006-7-31 11062 El Dorado Northern Sierra Nevada Mountains, along Wrights Lake Road (Forest Route 4), 3.3 miles north of Hwy US-50 2049 Comment
  UCR176034  Ipomopsis aggregata subsp. formosissima George K. Helmkamp, E. A. Helmkamp 2006-7-12 10971 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR176052  Potentilla gracilis var. fastigiata George K. Helmkamp, E. A. Helmkamp 2006-7-28 11019 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
  UCR176223  Pinus contorta subsp. murrayana George K. Helmkamp, E. A. Helmkamp 2006-7-10 10913 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
  UCR176228  Erigeron breweri George K. Helmkamp, E. A. Helmkamp 2006-7-31 11067 El Dorado Northern Sierra Nevada Mountains, along Wrights Lake Road (Forest Route 4), 3.3 miles north of Hwy US-50 2049 Comment
  UCR176229  Calochortus minimus George K. Helmkamp, E. A. Helmkamp 2006-7-7 10863 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176240  Ipomopsis aggregata subsp. formosissima George K. Helmkamp, E. A. Helmkamp 2006-7-7 10847 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176246  Antennaria rosea subsp. rosea George K. Helmkamp, E. A. Helmkamp 2006-7-12 10958 El Dorado Northern Sierra Nevada Mtns, Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges 1960 Comment
  UCR176310  Antennaria corymbosa George K. Helmkamp, E. A. Helmkamp 2006-7-10 10879 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
  UCR176316  Delphinium nuttallianum George 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 2030 Comment
  UCR176360  Streptanthus tortuosus var. orbiculatus George K. Helmkamp, E. A. Helmkamp 2006-7-10 10908 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
  UCR176415  Aster integrifolius George K. Helmkamp, E. A. Helmkamp 2006-7-31 11070 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
  UCR176417  Melica George K. Helmkamp, E. A. Helmkamp 2006-7-10 10883 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
  UCR176442  Mimulus tilingii George K. Helmkamp, E. A. Helmkamp 2006-8-7 11179 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road 2250 Comment
  UCR176465  Wyethia mollis George K. Helmkamp, E. A. Helmkamp 2006-7-31 11099 El Dorado Northern Sierra Nevada Mountains, junction of Wright's Lake Road (Forestry Route 4) and the road from Ice House Reservoir 2018 Comment
  UCR176467  Mimulus primuloides var. primuloides George K. Helmkamp, E. A. Helmkamp 2006-7-31 11097 A El Dorado Northern Sierra Nevada Mountains, junction of Wright's Lake Road (Forestry Route 4) and the road from Ice House Reservoir 2018 Comment
  UCR176744  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2006-7-12 10950 El Dorado Northern Sierra Nevada Mtns, Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges 1960 Comment
  UCR177021  Eucephalus breweri George K. Helmkamp, E. A. Helmkamp 2005-9-23 9919 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
  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
  UCR178654  Platanthera dilatata var. leucostachys George K. Helmkamp, E. A. Helmkamp 2006-9-7 11354 El Dorado Northern Sierra Nevada Mountains, Ice House Road. Robbs Valley near Robbs Hut junction 1720 Comment
  UCR179215  Angelica breweri George K. Helmkamp, E. A. Helmkamp 2006-9-12 11376 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
  UCR179217  Chaenactis douglasii var. alpina George K. Helmkamp, E. A. Helmkamp 2006-9-12 11374 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
  UCR179312  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2006-8-24 11267 El Dorado Northern Sierra Nevada Mountains Foothills, Ice House Road, 2.3 miles south of Union Reservoir Road 1552 Comment
  UCR179345  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2006-9-12 11368 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
  UCR179347  Symphoricarpos rotundifolius var. rotundifolius George K. Helmkamp, E. A. Helmkamp 2006-9-12 11380 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
  UCR179362  Cyperus eragrostis George K. Helmkamp, E. A. Helmkamp 2006-9-20 11425 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Ice House Road [at Riverton] and US-50 east of Pacific 1000 Comment
  UCR179370  Agrostis pallens George K. Helmkamp, E. A. Helmkamp 2006-8-24 11271 El Dorado Northern Sierra Nevada Mountains Foothills, Ice House Road, 2.3 miles south of Union Reservoir Road 1552 Comment
  UCR179552  Croton setiger George K. Helmkamp, E. A. Helmkamp 2006-9-29 11440 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
  UCR184370  Pseudotsuga menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2007-2-24 11590 El Dorado Foothills, Northern Sierra Nevada Mountains, Lake Oaks Mobile Home Park, Pleasant Valley Road and Patterson Dr., east end of Diamond Springs 537 Comment
  UCR184376  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2007-3-5 11597 El Dorado Foothills, northern Sierra Nevada mountains., Junction of Rock Creek Road and Calif. Hwy 49, north of Chili Bar 457 Comment
  UCR184792  Lotus micranthus George K. Helmkamp, E. A. Helmkamp 2007-5-9 11986 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
  UCR184814  Triteleia ixioides subsp. anilina George K. Helmkamp, E. A. Helmkamp 2007-5-7 11957 El Dorado Foothills, northern Sierra Nevada Mountains, Pedro Hills Road, 0.8 mile wet of Calif. Hwy 49, junction of roads 5.3 miles south of Cool 354 Comment
  UCR184821  Castilleja lineariloba George K. Helmkamp, E. A. Helmkamp 2007-5-7 11961 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
  UCR184840  Lathyrus sulphureus George K. Helmkamp, E. A. Helmkamp 2007-5-7 11949 El Dorado Foothills, Northern Sierra Nevada Mountains, Pedro Hills Road, 0.3 mile west of the junction with Calif. Hwy 49, junction 5.3 miles south of Cool 299 Comment
  UCR184846  Laurentia fluviatilis George K. Helmkamp, E. A. Helmkamp 2007-5-11 11992 El Dorado Foothills, northern Sierra Nevada Mountains, Lake Oaks Mobile Home Park, Diamond Springs 524 Comment
  UCR185340  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2007-4-20 11777 El Dorado Foothills, Northern Sierra Nevada Mountains, along Green Valley Road at junction of Jet Quartz Creek Rd., between Four Corners and Gold Hill 410 Comment
  UCR187310  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2007-4-20 11761 El Dorado Foothills, Northern Sierra Nevada Mountains, 2.2 miles north of US-50 on Bass Lake Road, overlooking Bass Lake; between El Dorado Hills and Cameron Park 384 Comment
  UCR188150  Anthriscus caucalis George K. Helmkamp, E. A. Helmkamp 2007-4-30 11900 El Dorado Foothills, Northern Sierra Nevada Mountains, hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  UCR188222  Plectritis brachystemon George K. Helmkamp, E. A. Helmkamp 2007-5-1 11913 El Dorado Foothills, Northern Sierra Nevada Mountains, access road to South Fork American River along CA-49, 4.4 miles northwest of Coloma 207 Comment
  UCR188441  Scandix pecten-veneris George K. Helmkamp, E. A. Helmkamp 2007-4-30 11883 El Dorado Foothills, Northern Sierra Nevada Mountains, hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  UCR188443  Geranium molle George K. Helmkamp, E. A. Helmkamp 2007-4-30 11882 El Dorado Foothills, Northern Sierra Nevada Mountains, hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  UCR188448  Potentilla glandulosa subsp. glandulosa George K. Helmkamp, E. A. Helmkamp 2007-4-29 11876 El Dorado Foothills, Northern Sierra Nevada Mountains, Lake Oaks mobile home park, Diamond Springs 524 Comment
  UCR189015  Collomia linearis George K. Helmkamp 2007-7-7 12466 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.9 mile west of Luther Pass in the Grass Lake area 2338 Comment
  UCR189017  Cryptantha echinella George K. Helmkamp 2007-7-7 12467 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.9 mile west of Luther Pass in the Grass Lake area 2338 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
  UCR189602  Allium campanulatum George K. Helmkamp, Elizabeth Helmkamp, Amy Barnes 2007-6-20 12373 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
  UCR189925  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2007-8-30 12848 El Dorado Northern Sierra Nevada Mountains Foothills, along Hwy CA-49 at the south approach to the South Fork of the American River, northwest of Coloma 220 Comment
  UCR189927  Oenothera elata subsp. hirsutissima George K. Helmkamp, E. A. Helmkamp 2007-8-30 12846 El Dorado Foothills, northern Sierra Nevada Mountains, along Hwy CA-49 at the southeast end of Coloma 238 Comment
  UCR190191  Anthemis cotula George K. Helmkamp, E. A. Helmkamp 2007-7-23 12589 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the crossing of Traverse Creek; about 2 miles southeast of its junction with CA-193 732 Comment
  UCR190193  Hypericum perforatum George K. Helmkamp, E. A. Helmkamp 2007-7-23 12584 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the crossing of Traverse Creek; about 2 miles southeast of its junction with CA-193 732 Comment
  UCR190198  Brassica geniculata George K. Helmkamp, E. A. Helmkamp 2007-9-19 12979 El Dorado Northern Sierra Nevada Mountains Foothills, along Greenstone Road just south of its junction with US-50 (east of Shingle Springs) 427 Comment
  UCR190199  Daucus carota George K. Helmkamp, E. A. Helmkamp 2007-7-23 12561 El Dorado Northern Sierra Nevada Mountains Foothills, Rock Creek road, 7.1 miles east of its junction with CA-193 567 Comment
  UCR190201  Rosa canina George K. Helmkamp, E. A. Helmkamp 2007-7-23 12577 El Dorado Northern Sierra Nevada Mountains Foothills, along Hwy CA-193, 1.0 mile south of Georgetown 771 Comment
  UCR190203  Nuphar lutea subsp. polysepala George K. Helmkamp, E. A. Helmkamp 2007-8-21 12789 El Dorado Northern Sierra Nevada Mountains, Ice House Road at the junction to the lower campground and boat ramp of Loon Lake 1976 Comment
  UCR191042  Medicago lupulina George K. Helmkamp, E. A. Helmkamp 2007-6-6 12272 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 6.3 miles east of its junction with Sly Park Road 1607 Comment
  UCR191067  Agoseris grandiflora George K. Helmkamp, E. A. Helmkamp 2007-6-6 12276 El Dorado Northern Sierra Nevada Mountains, junction of Bonetti Road and Mormon Emigrant Trail, east of Jenkinson Lake 1226 Comment
  UCR191093  Erigeron peregrinus George K. Helmkamp 2007-6-29 12446 El Dorado Northern Sierra Nevada Mountains, Kirkwood Lake, about 0.5 mile north of CA-88 on the road to the campground 2351 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
  UCR191099  Rosa bridgesii George K. Helmkamp, E. A. Helmkamp 2007-6-8 12290 El Dorado Northern Sierra Nevada Mountains, Bonetti Road, 2.0 miles south of Mormon Emigrant Trail 1189 Comment
  UCR191144  Navarretia George K. Helmkamp, E. A. Helmkamp 2007-6-8 12311 El Dorado Northern Sierra Nevada Mountains, junction of Bonetti Road and Mormon Emigrant Trail [Silver Lake Rd.], east of Jenkinson Lake 1226 Comment
  UCR192506  Polygonum polygaloides George K. Helmkamp, E. A. Helmkamp 2007-5-31 12223 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, north of US-50 at the Lyon's Creek trailhead and creek crossing 2058 Comment
  UCR192722  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2007-9-11 12948 El Dorado Northern Sierra Nevada Mountains, Ice House Road 4.3 miles north of its junction with US-50 1393 Comment
  UCR193175  Madia elegans subsp. vernalis George K. Helmkamp, E. A. Helmkamp 2007-6-6 12263 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 8.3 miles east of its junction with Sly Park Road 1616 Comment
  UCR193177  Phacelia hastata var. hastata George K. Helmkamp, E. A. Helmkamp 2007-5-31 12240 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
  UCR193194  Alnus incana subsp. tenuifolia George K. Helmkamp, E. A. Helmkamp 2007-5-31 12248 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 4.3 miles west of its junction with Wright's Lake Road, generally between Wright's Lake and Ice House Reservoir 1753 Comment
  UCR194242  Myosotis laxa George K. Helmkamp, E. A. Helmkamp 2007-5-31 12217 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.3 miles north of US-50 at Wrights Lake junction east of Kyburz 2043 Comment
  UCR196835  Claytonia perfoliata subsp. perfoliata George K. Helmkamp, E. A. Helmkamp 2008-6-3 13555 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
  UCR196885  Eriophyllum lanatum var. integrifolium George K. Helmkamp, E. A. Helmkamp 2008-6-3 13589 El Dorado Sierra Nevada Mountains, Forbay Road, 4.8 miles northwest of its junction with CA-50 at Pollock Pines 965 Comment
  UCR196887  Phacelia hastata var. compacta George K. Helmkamp, E. A. Helmkamp 2008-6-5 13614 El Dorado Sierra Nevada Mountains Foothills, Forbay Road. 0.5 mile north of its crossing of the South Fork American River 668 Comment
  UCR196888  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2008-6-5 13613 El Dorado Sierra Nevada Mountains Foothills, Forbay Road. 0.5 mile north of its crossing of the South Fork American River 668 Comment
  UCR196942  Saxifraga californica George K. Helmkamp, E. A. Helmkamp 2008-6-3 13552 El Dorado Sierra Nevada Mountains, Pony Express Trail, 0.8 mile east of Sly Park Road (Pollock Pines) and parallel to US-50 1213 Comment
  UCR197277  Trifolium subterraneum George K. Helmkamp, E. A. Helmkamp 2008-4-25 13313 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR197322  Gayophytum George K. Helmkamp, E. A. Helmkamp 2008-7-11 13749 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
  UCR197372  Viola sheltonii George K. Helmkamp, E. A. Helmkamp 2008-4-28 13341 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
  UCR197411  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2008-4-30 13344 El Dorado Sierra Nevada Mountains Foothills, junction of Meadow Brook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR197531  Gilia George K. Helmkamp, E. A. Helmkamp 2008-7-11 13751 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
  UCR197615  Pinus jeffreyi George K. Helmkamp, E. A. Helmkamp 2008-5-15 13432 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 1.2 miles north of its junction with US-50 1817 Comment
  UCR197617  Ribes nevadense George K. Helmkamp, E. A. Helmkamp 2008-5-15 13434 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 1.2 miles north of its junction with US-50 1817 Comment
  UCR197665  Sanicula tuberosa George K. Helmkamp, E. A. Helmkamp 2008-6-9 13651 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
  UCR200852  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2008-9-9 14091 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the creek crossing, 1.6 miles east of CA-193 628 Comment
  UCR200914  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2008-9-2 14070 El Dorado Foothills, northern Sierra Nevada Mountains, Mosquito Road, 5.4 miles northeast of US-50 in Placerville 488 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
  UCR200923  Nepeta cataria George K. Helmkamp, E. A. Helmkamp 2008-9-9 14090 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the creek crossing, 1.6 miles east of CA-193 628 Comment
  UCR200928  Eriogonum luteolum var. luteolum George K. Helmkamp, E. A. Helmkamp 2008-9-9 14083 El Dorado Foothills, northern Sierra Nevada Mountains, junction of Bear Creek Road and Meadow Brook Road at Bear Creek; east of CA-193 and south of Georgetown 678 Comment
  UCR200929  Verbascum blattaria George K. Helmkamp, E. A. Helmkamp 2008-9-9 14082 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
  UCR201576  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2008-8-1 13937 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 3.8 miles north of its junction with CA-50 2076 Comment
  UCR201912  Chenopodium botrys George K. Helmkamp, E. A. Helmkamp 2008-8-30 14048 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail 2.4 miles northwest of its junction with CA-88 2271 Comment
  UCR206114  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2009-6-3 14885 El Dorado Sierra Nevada Mountains Foothills, Pony Express Trail, 0.7 mile east of its junction with Sly Park Road in Pollock Pines 851 Comment
  UCR206605  Hackelia George K. Helmkamp, E. A. Helmkamp 2009-7-2 15099 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR206733  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2009-7-2 15102 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR206787  Linanthus pygmaeus subsp. continentalis George K. Helmkamp, E. A. Helmkamp 2009-7-2 15104 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR206805  Stellaria neglecta George K. Helmkamp, E. A. Helmkamp 2009-3-19 14415 El Dorado Sierra Nevada Mtns. Foothills, Rock Creek Road, 2.4 miles east of its junction with CA-193, above South Fork of American River 430 Comment
  UCR206807  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2009-3-19 14413 El Dorado Sierra Nevada Mtns. Foothills, Rock Creek Road, 2.4 miles east of its junction with CA-193, above South Fork of American River 430 Comment
  UCR206853  Pentagramma triangularis subsp. triangularis George K. Helmkamp, E. A. Helmkamp 2009-3-7 14353 El Dorado Northern Sierra Nevada Mtns. Foothills, along Rock Creek Road, 1.3 miles east of its junction with CA-193 427 Comment
  UCR206858  Schoenoplectus acutus var. occidentalis George K. Helmkamp, E. A. Helmkamp 2009-6-22 15030 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 527 Comment
  UCR206859  Philadelphus lewisii George K. Helmkamp, E. A. Helmkamp 2009-6-25 15042 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
  UCR206916  Gilia capitata subsp. mediomontana George K. Helmkamp, E. A. Helmkamp 2009-5-24 14794 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road 640 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
  UCR206996  Kelloggia galioides George K. Helmkamp, Amy Barnes 2009-7-8 15169 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
  UCR207134  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2009-4-4 14500 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 0.8 mile west of its junction with Happy Valley Cut-off 607 Comment
  UCR207152  Sambucus mexicana George K. Helmkamp, E. A. Helmkamp 2009-7-22 15279 El Dorado Sierra Nevada Mountains, Forestry Route 42, 1.6 miles west of its junction with Wrights Lake Road 1851 Comment
  UCR207444  Bromus carinatus var. carinatus George K. Helmkamp, Amy Barnes 2009-7-8 15157 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
  UCR207672  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2009-4-21 14529 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
  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
  UCR207905  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 511 Comment
  UCR208269  Vicia sativa subsp. sativa George K. Helmkamp, E. A. Helmkamp 2009-5-4 14595 El Dorado Sierra Nevada Mountains Foothills, Sly Park Road, 0.3 miles southwest of its junction with Mormon Emigrant Trail 1067 Comment
  UCR208326  Pistacia chinensis George K. Helmkamp, E. A. Helmkamp 2009-4-20 14515 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR209010  Dysphania botrys George K. Helmkamp, E. A. Helmkamp 2009-8-19 15503 El Dorado Sierra Nevada Mountains, along Ice House Road at SW shore of Loon Lake, 2.6 miles south of its end on the north side of the lake 1973 Comment
  UCR209016  Juncus bufonius var. bufonius George K. Helmkamp, E. A. Helmkamp 2009-8-19 15511 El Dorado Sierra Nevada Mountains, Wright's Lake Road, 8.6 miles north of its upper junction with Ice House Road 1785 Comment
  UCR209044  Platanthera dilatata var. leucostachys George K. Helmkamp, E. A. Helmkamp 2009-8-19 15482 El Dorado Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 21.6 miles north of CA-50 1716 Comment
  UCR215904  Asclepias speciosa George K. Helmkamp, E. A. Helmkamp 2009-6-29 15063 El Dorado Sierra Nevada Mountains Foothills, Ice House Road, 0.2 miles north of its junction with CA-50, c. 7.3 miles ENE (83 deg. ) of Pollock Pines 989 Comment
  UCR216974  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2010-5-14 16024 El Dorado Sierra Nevada Mountains Foothills, along CA-16 (Mt. Aukum Rd.), 1.8 miles northeast of Somerset 567 Comment
  UCR217154  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2010-5-14 16032 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
  UCR217182  Sanicula bipinnatifida George K. Helmkamp, E. A. Helmkamp 2010-5-17 16063 El Dorado Sierra Nevada Mountains Foothills, Pine Hill Road, 0.8 mile above the junction with Bertana Court; edge of Pine Hill Ecological Reserve 610 Comment
  UCR217264  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2010-5-17 16072 El Dorado Sierra Nevada Mountains Foothills, Pine Hill Road, 0.8 mile above the junction with Bertana Court; edge of Pine Hill Ecological Reserve 610 Comment
  UCR217271  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2010-5-13 16010 El Dorado Sierra Nevada Mountains Foothills, Mosquito Road, 5.5 miles northeast of its junction with US-50 in Placerville 500 Comment
  UCR217273  Pityrogramma triangularis George K. Helmkamp, E. A. Helmkamp 2010-5-13 16014 El Dorado Sierra Nevada Mountains Foothills, Mosquito Road, 4.4 miles northeast of its junction with US-50 in Placerville 620 Comment
  UCR217861  Eriogonum nudum var. oblongifolium George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-6 16462 El Dorado Sierra Nevada Mountains, Silver Fork Road, 4.1 miles south of its junction with US-50 in Kyburz 1500 Comment
  UCR217863  Sisymbrium altissimum George K. Helmkamp, E. A. Helmkamp 2010-7-9 16476 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
  UCR217868  Senecio integerrimus var. major George K. Helmkamp, E. A. Helmkamp 2010-7-9 16472 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
  UCR217869  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2010-7-9 16473 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
  UCR217874  Trifolium dubium George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16131 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
  UCR217895  Lupinus nanus George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16114 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
  UCR217897  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2010-5-22 16091 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
  UCR217900  Epilobium pallidum George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-6 16460 A El Dorado Sierra Nevada Mountains, Silver Fork Road, 4.1 miles south of its junction with US-50 in Kyburz 1500 Comment
  UCR217906  Cryptantha simulans George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-6 16457 El Dorado Sierra Nevada Mountains, Silver Fork Road, 1.9 miles south of its junction with US-50 in Kyburz 1473 Comment
  UCR217931  Sidalcea malviflora subsp. asprella George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16146 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
  UCR217933  Plagiobothrys nothofulvus George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16145 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
  UCR217938  Sanicula bipinnatifida George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16142 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
  UCR217939  Aira caryophyllea George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16121 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
  UCR218080  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2010-7-9 16504 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
  UCR218100  Coronilla varia George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-6 16447 El Dorado Sierra Nevada Mountains, Silver Fork road, at the junction with US-50 in Kyburz 1328 Comment
  UCR218106  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2010-7-9 16493 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
  UCR218272  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, E. A. Helmkamp 2010-7-23 16606 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
  UCR218441  Solanum xanti George K. Helmkamp, E. A. Helmkamp 2010-7-9 16487 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
  UCR218443  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2010-7-9 16484 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
  UCR218982  Pteridium aquilinum George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16322 El Dorado Sierra Nevada Mountains Foothills, about 0.1 mile south of Slug Gulch Road at a point 4.7 miles east of its junction with Perry Creek Road 1021 Comment
  UCR219144  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2009-9-29 15653 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
  UCR219160  Xanthium spinosum George K. Helmkamp, E. A. Helmkamp 2009-10-20 15692 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road 0.9 mile east of CA-49, at the junction with Morales Ranch Road, 6.8 air mi. SSW (188 deg. ) of Diamond Springs 381 Comment
  UCR222548  Castilleja foliolosa George K. Helmkamp, E. A. Helmkamp 2010-4-17 15893 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 8.0 miles southwest of its junction with CA-49 near Pilot Hill 322 Comment
  UCR222570  Galium murale George K. Helmkamp, E. A. Helmkamp 2010-4-17 15881 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  UCR223952  Madia elegans subsp. vernalis George K. Helmkamp, E. A. Helmkamp 2010-4-23 15935 El Dorado Sierra Nevada Mountains Foothills, Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  UCR224232  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2010-4-23 15914 El Dorado Sierra Nevada Mountains Foothills, along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing 200 Comment
  UCR229395  Adenocaulon bicolor George K. Helmkamp, E. A. Helmkamp 2011-7-30 17917 El Dorado Northern Sierra Nevada Mountains, along North-South Road, 1.6 miles north of its junction with Omo Ranch Road, 0.95 mi. NNW (331 deg. ) of Omo Ranch Rd. jct. with Hwy 88 1460 Comment
  UCR229397  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2011-7-30 17936 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
  UCR229530  Brodiaea elegans subsp. elegans George K. Helmkamp, E. A. Helmkamp 2011-7-30 17947 El Dorado Northern Sierra Nevada Mountains, Omo Ranch Road, 7.4 miles southeast of Omo Ranch, 1.9 mi. NW (304 deg. ) airline of Hwy 88 junction 1372 Comment
  UCR230098  Panicum acuminatum var. acuminatum George K. Helmkamp, E. A. Helmkamp 2010-9-30 16976 El Dorado Northern Sierra Nevada Mountains Foothills, Forest Route 34 (extension of Peavine Ridge Road?), 10.4 miles west of its junction with Ice House Canyon Road 1213 Comment
  UCR230099  Gayophytum heterozygum George K. Helmkamp, E. A. Helmkamp 2010-9-30 16979 El Dorado Northern Sierra Nevada Mountains, southern end of Loon Lake at the Ice House Road entrance to campground 1966 Comment
  UCR231010  Phacelia hydrophylloides George K. Helmkamp, E. A. Helmkamp 2010-8-7 16716 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trail, at Jim Quinn Spring 2136 Comment
  UCR231016  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2010-8-7 16713 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trail, at Jim Quinn Spring 2136 Comment
  UCR231115  Nemophila maculata George K. Helmkamp, E. A. Helmkamp 2010-8-7 16726 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trail, at Jim Quinn Spring 2136 Comment
  UCR231117  Heracleum maximum George K. Helmkamp, E. A. Helmkamp 2010-8-7 16724 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trail, at Jim Quinn Spring 2136 Comment
  UCR233025  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-9-24 18317 El Dorado Northern Sierra Nevada Mountains, Loon Lake [Ice House] Road, 2.7 miles NNE of its junction with Wentworth Springs Road 1884 Comment
  UCR233027  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2011-9-24 18321 El Dorado Northern Sierra Nevada Mountains, Loon Lake [Ice House] Road, 2.7 miles NNE of its junction with Wentworth Springs Road 1884 Comment
  UCR233107A  Stachys ajugoides var. rigida George K. Helmkamp, E. A. Helmkamp 2011-10-13 18412 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
  UCR233176B  Iris hartwegii subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2011-7-7 17662 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 5.2 miles south of its junction with Mormon Emigrant Trail 1409 Comment
  UCR233192B  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2010-3-20 15747 A El Dorado Sierra Nevada Mountains Foothills, junction of Mulberry Lane and Green Valley Road, c. 6 miles west of Placerville 354 Comment
  UCR233301  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2011-9-1 18222 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  UCR233305  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2011-9-1 18210 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
  UCR233307  Arctostaphylos patula George K. Helmkamp, E. A. Helmkamp 2011-9-1 18207 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  UCR233351  Carex phaeocephala George K. Helmkamp, E. A. Helmkamp 2011-9-1 18231 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  UCR233353  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2011-9-13 18264 El Dorado Northern Sierra Nevada Mountains, Foster Meadow Road, 0.6 miles north of its junction with CA-88 2136 Comment
  UCR233433  Sambucus racemosa George K. Helmkamp, E. A. Helmkamp 2011-9-13 18251 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
  UCR233438  Platanthera dilatata var. leucostachys George K. Helmkamp, E. A. Helmkamp 2011-9-13 18240 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 21.4 rd. miles southeast of Jenkinson's Lake, between Silver Fork Road and Hwy 88, 1.1 mi. NW (331 deg. ) of Alder Hill 2270 Comment
  UCR233635  Asclepias cordifolia George K. Helmkamp, E. A. Helmkamp 2011-7-7 17641 El Dorado Northern Sierra Nevada Mountains, Park Creek Road, 0.4 mile east of its junction with Old Sly Park Road, southeast of Pollock Pines, 0.7 mi. SSW (191 deg. ) of Fresh Pond 1250 Comment
  UCR233637  Leucanthemum vulgare George K. Helmkamp, E. A. Helmkamp 2011-7-7 17639 El Dorado Northern Sierra Nevada Mountains, Park Creek Road, 0.4 mile east of its junction with Old Sly Park Road, southeast of Pollock Pines, 0.7 mi. SSW (191 deg. ) of Fresh Pond 1250 Comment
  UCR234008  Galium sparsiflorum subsp. sparsiflorum George K. Helmkamp, E. A. Helmkamp 2011-7-7 17647 El Dorado Northern Sierra Nevada Mountains, Capps Crossing (Bonnetti) Road, 2.8 miles south of its junction with Mormon Emigrant Trail 1297 Comment
  UCR234009  Galium bolanderi George K. Helmkamp, E. A. Helmkamp 2011-7-7 17646 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
  UCR234187  Symphoricarpos rotundifolius var. rotundifolius George K. Helmkamp, E. A. Helmkamp 2010-9-23 16962 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
  UCR235274  Anagallis arvensis George K. Helmkamp, E. A. Helmkamp 2011-11-17 18457 El Dorado Southeastern Sacramento Valley, 1.6 miles west of Latrobe on South Shingle Road 194 Comment
  UCR235621  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2012-5-3 18906 El Dorado Northern Sierra Nevada Mountains Foothills, unnamed road leading to power plant, 0.3 mile east of South Fork American River bridge 613 Comment
  UCR235623  Athysanus pusillus George K. Helmkamp, E. A. Helmkamp 2012-5-3 18905 El Dorado Northern Sierra Nevada Mountains Foothills, unnamed road leading to power plant, 0.3 mile east of South Fork American River bridge 613 Comment
  UCR235628  Polypodium glycyrrhiza George K. Helmkamp, E. A. Helmkamp 2012-4-27 18867 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River 401 Comment
  UCR235629  Poa infirma George K. Helmkamp, E. A. Helmkamp 2012-4-27 18865 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River 401 Comment
  UCR235640  Trifolium ciliolatum George K. Helmkamp, E. A. Helmkamp 2012-4-30 18885 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road, 2.4 mile north of the bridge over the South Fork American River 694 Comment
  UCR236916  Poa secunda George K. Helmkamp, E. A. Helmkamp 2012-5-28 19074 El Dorado Northern Sierra Nevada Mountains, Pebble Canyon Road, 0.6 mile south of its junction with Mormon Emigrant Trail 1555 Comment
  UCR237004  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-5-28 19065 El Dorado Northern Sierra Nevada Mountains, Pebble Canyon Road, 0.6 mile south of its junction with Mormon Emigrant Trail 1555 Comment
  UCR237553  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2012-3-9 18618 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
  UCR237559  Hackelia mundula George K. Helmkamp, E. A. Helmkamp 2012-7-2 19294 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 2.9 miles west of its junction with CA-88 2271 Comment
  UCR241261  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2012-10-1 19946 El Dorado Eastern Sacramento Valley, Southeast end of El Dorado Hills; Windfield Way just south of its junction with White Rock Road 168 Comment
  UCR241263  Trichostema lanceolatum George K. Helmkamp, E. A. Helmkamp 2012-10-1 19948 El Dorado Eastern Sacramento Valley, Southeast end of El Dorado Hills; Windfield Way just south of its junction with White Rock Road 168 Comment
  UCR241741  Festuca arundinacea George K. Helmkamp, E. A. Helmkamp 2012-7-6 19367 El Dorado Northern Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50 2078 Comment
  UCR242014  Chondrilla juncea George K. Helmkamp, E. A. Helmkamp 2012-9-17 19861 El Dorado Northern Sierra Nevada Mountains Foothills, north of Pollock Pines, along Forebay Road at South Fork American River 564 Comment
  UCR242023  Chamaesyce maculata George K. Helmkamp, E. A. Helmkamp 2012-9-17 19864 El Dorado Northern Sierra Nevada Mountains Foothills, north of Pollock Pines, along Forebay Road at South Fork American River 564 Comment
  UCR242336  Ribes cereum var. cereum George K. Helmkamp, E. A. Helmkamp 2010-8-20 16807 El Dorado Northern Sierra Nevada Mountains, Foster Meadow Road 0.6 mile west of Mormon Emigrant Trail in the Leek Spring area 2232 Comment
  UCR242355  Gilia leptalea subsp. bicolor George K. Helmkamp, E. A. Helmkamp 2010-8-20 16819 El Dorado Northern Sierra Nevada Mountains, near abandoned Iron Mountain ski resort, road spur parallel to Mormon Emigrant Trail about 0.2 mile west of its junction with CA-88 2238 Comment
  UCR242565  Deschampsia elongata George K. Helmkamp, E. A. Helmkamp 2011-5-24 17374 El Dorado Northern Sierra Nevada Mountains Foothills, Mesquite Road, 11.2 miles south of its junction with Wentworth Springs Road, 7.3 mi. NE (42 deg. ) of Placerville 1073 Comment
  UCR242567  Capsella bursa-pastoris George K. Helmkamp, E. A. Helmkamp 2010-3-26 15792 El Dorado Sierra Nevada Mountains Foothills, junction of Morales Ranch Road and Sand Ridge Road, 1.2 miles east of Hwy CA-49, south of Placerville 396 Comment
  UCR242591  Silene californica George K. Helmkamp, E. A. Helmkamp 2011-5-31 17405 El Dorado Northern Sierra Nevada Mountains Foothills, Happy Valley Cutoff Road on the southeast side of the bridge over the North Fork of the Cosumnes River, 1.4 mi. NE (61 deg. ) of Somerset 546 Comment
  UCR242598  Castilleja lacera George K. Helmkamp, E. A. Helmkamp 2011-6-1 17409 El Dorado Northern Sierra Nevada Mountains Foothills, north end of Placerville; Bear Rock Road just east of its junction with Bedford Ave. 654 Comment
  UCR242600  Clarkia rhomboidea George K. Helmkamp, E. A. Helmkamp 2011-7-7 17632 El Dorado Northern Sierra Nevada Mountains, Park Creek Road, 0.4 mile east of its junction with (Co. Rd. E16) Sly Park Road, 1.4 mi. SE (111 deg. ) of Pollock Pines 1290 Comment
  UCR242786  Prunus emarginata George K. Helmkamp, E. A. Helmkamp 2010-9-1 16902 El Dorado Northern Sierra Nevada Mountains, Mehrten Springs Road, 0.6 mile north of its junction wtih CA-88 2018 Comment
  UCR242800  Epilobium glaberrimum subsp. fastigiatum George K. Helmkamp, E. A. Helmkamp 2010-9-1 16903 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
  UCR242839  Phacelia hastata var. hastata George K. Helmkamp, E. A. Helmkamp 2010-9-1 16900 El Dorado Northern Sierra Nevada Mountains, Mehrten Springs Road, 0.6 mile north of its junction wtih CA-88 2018 Comment
  UCR248404  Stipa occidentalis var. pubescens George K. Helmkamp, Elizabeth Helmkamp 2013-7-22 21099 A 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
  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
  UCR248548  Agrostis gigantea George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22026 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 7.4 miles east of the junction with Volcanoville Road 1320 Comment
  UCR248549  Eriogonum nudum var. deductum George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22025 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 7.4 miles east of the junction with Volcanoville Road 1320 Comment
  UCR249155  Poa secunda George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20877 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR249157  Ceanothus integerrimus George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20874 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR249552  Galium bifolium George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20948 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.8 mile north of Mormon Emigrant Trail and near Jim Quinn Spring, N of Carson Pass Hwy 2116 Comment
  UCR249625  Phacelia George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20846 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz 1364 Comment
  UCR249627  Malacothrix floccifera George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20860 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 1.7 miles south of its junction with US-50 in Kyburz 1444 Comment
  UCR249875  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2007-8-30 12849 B El Dorado Northern Sierra Nevada Mountains Foothills, along Hwy CA-49 at the south approach to the South Fork of the American River, northwest of Coloma 220 Comment
  UCR249877  Euphorbia serpillifolia George K. Helmkamp, E. A. Helmkamp 2007-8-30 12849 A El Dorado Northern Sierra Nevada Mountains Foothills, along Hwy CA-49 at the south approach to the South Fork of the American River, northwest of Coloma 220 Comment
  UCR250047  Eriophyllum lanatum var. achilleoides George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20882 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
  UCR250173  Cornus nuttallii George K. Helmkamp, E. A. Helmkamp 2009-5-4 14593 El Dorado Sierra Nevada Mountains Foothills, Capps Crossing Road, 1.1 miles south of its junction with Mormon Emigrant Trail 1189 Comment
  UCR250436  Lupinus polyphyllus var. burkei George K. Helmkamp, Mary Alice Barnes 2013-5-10 20546 El Dorado Northern Sierra Nevada Mtns. Foothills, Volcanoville Road (end of maintained road), 5.1 miles northwest of Bear Foot Road, at site of Volcanoville 960 Comment
  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
  UCR253111  Euphorbia serpillifolia subsp. serpillifolia George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22048 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
  UCR253113  Stipa occidentalis var. pubescens George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22054 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.1 miles north of Ice House Resort, 0.18 mi. north of Jones Fork Power House Rd., 1.2 mi. NW of Ice House Reservoir 1537 Comment
  UCR253118  Hieracium albiflorum George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22065 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
  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
  UCR253632  Epilobium brachycarpum George K. Helmkamp, Elizabeth Helmkamp 2012-11-12 20126 El Dorado East end of Sacramento Valley, El Dorado Hills; 100 yards east of Golden Foothill Parkway on Cypress Point Ct. (cul-de-sac), 0.7 mile south of Windfield Parkway 159 Comment
  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
  UCR257678  Mimulus tilingii George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19580 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 1.4 miles west of its junction with CA-88 2287 Comment
  UCR257679  Elymus elymoides subsp. californicus George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19578 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 1.4 miles west of its junction with CA-88 2287 Comment
  UCR257770  Lotus purshianus var. purshianus George K. Helmkamp, Amy Barnes 2014-7-28 22947 El Dorado Sierra Nevada Mountains Foothills, Lake Walton beside Balderston Road; 1/4 mile south of Wentworth Springs Road 966 Comment
  UCR257776  Ribes roezlii var. roezlii George K. Helmkamp, Amy Barnes 2012-8-19 19680 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
  UCR257792  Aster eatonii George K. Helmkamp, Amy Barnes 2012-8-19 19683 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
  UCR257821  Lupinus latifolius var. columbianus George K. Helmkamp, Amy Barnes 2012-8-19 19665 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
  UCR257823  Agrostis scabra George K. Helmkamp, Amy Barnes 2012-8-19 19656 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
  UCR258393  Solidago canadensis subsp. elongata George K. Helmkamp, Amy Barnes 2014-8-11 23000 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258416  Eriophyllum lanatum var. croceum George K. Helmkamp, Amy Barnes 2014-8-11 22990 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258791  Prunella vulgaris var. lanceolata George K. Helmkamp, Amy Barnes 2012-8-19 19668 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
  UCR258793  Calamagrostis canadensis George K. Helmkamp, Amy Barnes 2012-8-19 19654 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
  UCR260075  Dittrichia graveolens George K. Helmkamp, Elizabeth Helmkamp 2013-10-15 22424 El Dorado Sierra Nevada Mountains Foothills, Oak Hill Road, 3.6 miles south of its junction with Pleasant Valley Road 614 Comment
Read comments
Nov 25 2019
  UCR260077  Quercus lobata George K. Helmkamp, Elizabeth Helmkamp 2013-10-15 22421 El Dorado Sierra Nevada Mountains Foothills, Hwy E-16 just east of its junction with Pleasant Valley Road 750 Comment
  UCR262001  Scirpus microcarpus George K. Helmkamp, Amy Barnes 2014-10-10 23163 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.6 mile northwest of Luther Pass 2378 Comment
  UCR262003  Madia gracilis George K. Helmkamp, Amy Barnes 2014-10-10 23159 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.6 mile northwest of Luther Pass 2378 Comment
  UCR273673  Pinus ponderosa George K. Helmkamp, E. A. Helmkamp 2013-11-27 22496 El Dorado Sierra Nevada Mountains Foothills, Capp's Crossing Road, 0.4 mile southeast of its junction with Mormon Emigrant Trail 1204 Comment
  SBBG128977  Muhlenbergia andina G. K. Helmkamp, E. A. Helmkamp 2011-9-1 18229 El Dorado Silver Fork Rd, 3.1 mi N of its jct with the Mormon Emigrant Trail 1523 Comment
  SBBG128991  Silene invisa G. K. Helmkamp, E. A. Helmkamp 2011-9-1 18221 El Dorado Silver Fork Rd, 3.1 mi N of its jct with the Mormon Emigrant Trail 1523 Comment
  SBBG128992  Sericocarpus oregonensis G. K. Helmkamp, E. A. Helmkamp 2011-9-1 18204 El Dorado Silver Fork Rd, 3.1 mi S of its jct with US 50 in Hyburz 1447 Comment
  SEINET7249198  Campanula prenanthoides George K. Helmkamp, Elizabeth Helmkamp 2013-1 El Dorado Comment
  UCR102081  Clarkia cylindrica subsp. cylindrica George K. Helmkamp, E. A. Helmkamp 1998-5-14 3600 Fresno Inner South Coast Range, Warthan Creek Canyon, near Curry Mtn., c. 6-7 miles (airline) SW of Coalinga, along Calif. Hwy 198, 20.8 mi. west of Interstate 5 366 Comment
  UCR102083  Delphinium parryi George K. Helmkamp, E. A. Helmkamp 1998-5-14 3598 Fresno Inner South Coast Range, Warthan Creek Canyon, near Curry Mtn., c. 6-7 miles (airline) SW of Coalinga, along Calif. Hwy 198, 20.8 mi. west of Interstate 5 366 Comment
  UCR102088  Pholistoma membranaceum George K. Helmkamp, E. A. Helmkamp 1998-5-14 3613 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
  UCR102089  Phacelia imbricata subsp. imbricata George K. Helmkamp, E. A. Helmkamp 1998-5-14 3612 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
  UCR107341  Salvia mellifera George K. Helmkamp, E. A. Helmkamp 1998-5-14 3634 Fresno Coast Range, Warthan Creek Canyon, along Calif. Hwy 198, 27.6 mi. west of Interstate 5, west of Coalinga 457 Comment
  UCR107343  Galium parisiense George K. Helmkamp, E. A. Helmkamp 1998-5-14 3632 Fresno Coast Range, Warthan Creek Canyon, along Calif. Hwy 198, 27.6 mi. west of Interstate 5, west of Coalinga 457 Comment
  UCR107348  Delphinium hesperium George K. Helmkamp, E. A. Helmkamp 1998-5-14 3627 Fresno Coast Range, Warthan Creek Canyon, along Calif. Hwy 198, 27.6 mi. west of Interstate 5, west of Coalinga 457 Comment
  UCR107349  Rumex crispus George K. Helmkamp, E. A. Helmkamp 1998-5-14 3625 Fresno Coast Range, Warthan Creek Canyon, along Calif. Hwy 198, 27.6 mi. west of Interstate 5, west of Coalinga 457 Comment
  SD243071  Symphyotrichum subulatum George K. Helmkamp, E. A. Helmkamp 2011-10-8 18382 Glenn Northern Sacramento Valley: Co. Road 61 (Riz Road) 2.6 miles east of CA-45 and at the junction with Co. Road V, 8.26 miles SE (124a^z) of Willows (Princeton 7.5'Q) 25 Comment
  SD243076  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2011-10-8 18402 Glenn Northern Sacramento Valley: Road 60 (Ruiz Road) atht he junction with Co. Road P, 5.1 miles SE (144a^z) of Willows (Logandale 7.5'Q) 29 Comment
  SEINET4691727  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2011-1 18386 Glenn Northern Sacramento Valley: Co. Road 61 (Riz Rd.), 2.6 miles east of CA-45 and at the junction with Co. Road V, 8.26 mi. SE (124 degrees) of Willows. 26 Comment
  UCR232610  Kickxia spuria George K. Helmkamp, E. A. Helmkamp 2011-10-8 18369 Glenn Northern Sacramento Valley, along CA-45, 1.2 miles north of Princeton 44 Comment
  UCR232666  Chamaesyce prostrata George K. Helmkamp, E. A. Helmkamp 2011-10-8 18372 Glenn Northern Sacramento Valley, along CA-45, 1.2 miles north of Princeton 44 Comment
  UCR233431  Ammannia coccinea George K. Helmkamp, E. A. Helmkamp 2011-10-8 18383 Glenn Northern Sacramento Valley, Co. Road 61 (Riz Rd.), 2.6 miles east of CA-45 and at the junction with Co. Road V, 8.26 mi. SE (124 deg. ) of Willows 26 Comment
  UCR238745  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2012-2-9 18538 Glenn Sacramento Valley, Norman Road/ Rd. 68, 0.4 mile west of the Colusa County line, beside the Sacramento National Wildlife Refuge 24 Comment
  SEINET244292 Image available Spartina foliosa G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6994 Humboldt North coastal strand: North spit of Samoa Peninsula, 0.5 mi N of CA-255 bridge over Humboldt Bay. 6 Comment
  UCR122355  Gnaphalium stramineum George K. Helmkamp, E. A. Helmkamp 2001-7-8 7010 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR122357  Gnaphalium stramineum George K. Helmkamp, E. A. Helmkamp 2001-7-8 7013 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  UCR122380  Jaumea carnosa George K. Helmkamp, E. A. Helmkamp 2001-7-8 7004 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR122386  Spartina foliosa George K. Helmkamp, E. A. Helmkamp 2001-7-8 6994 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR123951  Oxalis oregana George K. Helmkamp, E. A. Helmkamp 2001-7-8 6976 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
  UCR123953  Silene californica George K. Helmkamp, E. A. Helmkamp 2001-7-8 6965 Humboldt North coast hills., Calif. Hwy 36, 2.2 mi west of Dinsmore 732 Comment
  UCR123958  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6984 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
  UCR123959  Daucus carota George K. Helmkamp, E. A. Helmkamp 2001-7-8 6985 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-A1045-1202  Nama hispida var. spathulata George K. Helmkamp 1977-1-22 Imperial Yuha Desert Crucifixion Thorn Natural Area [9 miles southeast of Ocotillo]; Coyote Wells 7.5'Q Comment
  SD143745  Plantago ovata G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2869 Imperial Between Highway I-8 and the All-American Canal across from the Brock Research Center; ca. 3.0 miles east of the junction of Highway CA-98 with I-8. 46 Comment
  SD143780  Eriogonum thomasii G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2879 Imperial 4.7 miles north of Winterhaven, on Picacho Road and 1 mile northwest of the All American Canal. (IPB 10/07) 75 Comment
  SD143809  Chylismia cardiophylla subsp. cardiophylla G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2896 Imperial 4.7 miles north of Winterhaven on Picacho Road and 1.0 mile northwest of the All-American Canal. 75 Comment
  SD143852  Nama hispida var. spathulata G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2898 Imperial 7.0 miles north of Winterhaven on Picacho Road and 1.7 miles east on powerline road. 198 Comment
  SD144025  Perityle emoryi G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2924 Imperial Colorado Desert: Imperial Dam area, just S of the dam on Hwy S-24. 75 Comment
  SD144482  Cryptantha angustifolia G. K. Helmkamp, E. Helmkamp 1998-1-28 2633 Imperial 6 mi WNW of Ocotillo on Hwy S-2. 152 Comment
  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
  SEINET3088067 Image available Gilia stellata G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2953 Imperial Colorado Desert: Little Picacho Wash along Picacho Rd., 2.5 mi. S of Picacho State Recreation Area. 152 Comment
  UCR100851  Brassica tournefortii George K. Helmkamp, E. A. Helmkamp 1998-3-18 2877 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100853  Baileya pauciradiata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2875 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100858  Ephedra trifurca George K. Helmkamp, E. A. Helmkamp 1998-3-18 2870 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR100859  Plantago ovata George K. Helmkamp, E. A. Helmkamp 1998-3-18 2869 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the junction of Hwy Calif Hwy 98 with I-8) 46 Comment
  UCR101073  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 1998-3-18 2900 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101078  Fagonia laevis George K. Helmkamp, E. A. Helmkamp 1998-3-18 2905 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 Comment
  UCR101079  Ditaxis neomexicana George K. Helmkamp, E. A. Helmkamp 1998-3-18 2906 Imperial Sonoran (Colorado) Desert, 7 mi. north of Winterhaven on Picacho Rd & 1.7 mi. E on powerline rd. 198 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
  UCR103654  Euphorbia setiloba George K. Helmkamp, E. Helmkamp 1998-1-28 2634 Imperial Sonoran (Colorado) Desert, Just outside the border of Anza-Borrego State Park (& Co. line), 6 mi. WNW of Ocotillo on Hwy S-2. 152 Comment
  UCR121151  Chenopodium album George K. Helmkamp, E. A. Helmkamp 2001-3-16 6266 Imperial Colorado Desert., Ramer Lake -46 Comment
  UCR121153  Nama hispida George K. Helmkamp, E. A. Helmkamp 2001-3-17 6270 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR122606  Plantago ovata George K. Helmkamp, E. A. Helmkamp 2001-3-17 6280 Imperial Sonoran (Colorado) Desert, Ogilby Rd., 15.4 miles south of Calif. Hwy 78 168 Comment
  UCR50448  Mohavea confertiflora George K. Helmkamp 1988-2-28 26 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
  UCR50451  Euphorbia setiloba George K. Helmkamp 1988-2-23 31 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 mi WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 152 Comment
  UCR50456  Monoptilon bellioides George K. Helmkamp 1988-2-28 30 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR50961  Camissonia claviformis 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
  UCR50966  Langloisia setosissima 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
  UCR50981  Palafoxia linearis George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR79506  Eclipta prostrata George K. Helmkamp 1993-11-4 X 13 Imperial Sonoran (Colorado) Desert, Boat dock at edge of the old bed of the Colorado River, 0.25 mi south of Walter's Camp (30 mi by road south of Blythe) 91 Comment
  CLARK-A1045-56  Sphaeralcea ambigua George K. Helmkamp 1977-4-24 Inyo Panamint Range north of Townes Pass; ; Emigrant Canyon 7.5' Q 1219 Comment
  RSA567464  Camissonia claviformis subsp. claviformis George K. Helmkamp 1993-6-16 16 -Jan Inyo 2 miles south of Pleasant Valley campground beside the Owens River. 1280 Comment
  RSA567473  Psorothamnus polydenius George K. Helmkamp 1993-6-16 s.n. Inyo 2 miles S of Pleasant Valley campground, beside the Owens River. 1280 Comment
  SD224823  Artemisia dracunculus G. K. Helmkamp 1997-9-29 2421 Inyo Onion Valley in the Sierra Nevado Mnts W of Independence. 2804 Comment
  SEINET244245 Image available Lotus procumbens G. K. Helmkamp, E. A. Helmkamp 1998-8-10 4366 Inyo Eastern High Serria Mountains; Independence Crk. Near Seven Pines (along Onion Valley Rd.) 1799 Comment
  SEINET245215  Eriogonum cernuum var. cernuum G. K. Helmkamp, E. A. Helmkamp 1998-8-10 4309 Inyo White Mountains; 1.0 mi N of Wyman Crk Rd on White Mountain Rd and W of the Bristlecone Pine boundary 2988 Comment
  UCD139006  Platanthera dilatata var. leucostachys G. K. Helmkamp; E. A. Helmkamp 1998-8-10 4352 Inyo Eastern High Sierra Mountains: Onion Valley, west of Independence. 854 Comment
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Apr 16 2015
  UCR100335  Eriogonum panamintense George K. Helmkamp 1997-9-30 2467 Inyo White Mountains, 6.1 mi north of Calif. Hwy 168 on White Mountain Road 2622 Comment
  UCR100337  Tetradymia canescens George K. Helmkamp 1997-9-30 2469 Inyo White Mountains, 6.1 mi north of Calif. Hwy 168 on White Mountain Road 2622 Comment
  UCR100350  Eriogonum inflatum George K. Helmkamp 1997-9-30 2493 Inyo White Mountains, [Deep Springs Valley], east side of White Mountains 1585 Comment
  UCR100356  Eriogonum nidularium George K. Helmkamp 1997-9-30 2487 Inyo White Mountains, [Deep Springs Valley], east side of White Mountains 1585 Comment
  UCR121934  Potentilla gracilis var. elmeri George K. Helmkamp, E. A. Helmkamp 2000-7-19 5928 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121952  Solidago multiradiata George K. Helmkamp, E. A. Helmkamp 2000-7-19 5910 Inyo Sierra Nevada Mountains, Rock Creek Lake Rd at the border of Mono Co. 3113 Comment
  UCR123398  Arabis divaricarpa George K. Helmkamp, E. A. Helmkamp 1998-8-12 4381 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR123399  Arabis holboellii var. pinetorum George K. Helmkamp, E. A. Helmkamp 1998-8-12 4383 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR123410  Dodecatheon alpinum George K. Helmkamp, E. A. Helmkamp 1998-8-12 4394 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR134463  Eriogonum umbellatum var. furcosum George K. Helmkamp, E. A. Helmkamp 1998-8-12 4364 Inyo Sierra Nevada Mountains, Independence Creek near Seven Pines and along Onion Valley Road 1799 Comment
  UCR134468  Epilobium glaberrimum subsp. fastigiatum George K. Helmkamp, E. A. Helmkamp 1998-8-12 4343 Inyo Sierra Nevada Mountains, Onion Valley, west of Independence, Inyo National Forest 2805 Comment
  UCR134469  Eriogonum parishii George K. Helmkamp, E. A. Helmkamp 1998-8-12 4344 Inyo Sierra Nevada Mountains, Onion Valley, west of Independence, Inyo National Forest 2805 Comment
  UCR134474  Rosa woodsii var. ultramontana George K. Helmkamp, E. A. Helmkamp 1998-8-10 4259 Inyo Eastern Sierra Nevada Mountains, along Big Pine Creek 12 mi west of Big Pine along Glacier Lodge Rd. 2317 Comment
  UCR134495  Platanthera dilatata var. leucostachys George K. Helmkamp, E. A. Helmkamp 1998-8-12 4352 Inyo Sierra Nevada Mountains, Onion Valley, west of Independence, Inyo National Forest 2805 Comment
  UCR134497  Chaenactis douglasii var. douglasii George K. Helmkamp, E. A. Helmkamp 1998-8-12 4354 Inyo Sierra Nevada Mountains, Onion Valley, west of Independence, Inyo National Forest 2805 Comment
  UCR134500  Angelica lineariloba George K. Helmkamp, E. A. Helmkamp 1998-8-10 4357 Inyo Eastern Sierra Nevada Mountains, Onion Valley, west of Independence 2805 Comment
  UCR134506  Carex pellita George K. Helmkamp, E. A. Helmkamp 1998-8-12 4362 Inyo Sierra Nevada Mountains, Onion Valley, west of Independence, Inyo National Forest 2805 Comment
  UCR13842  Eriogonum umbellatum var. nevadense George K. Helmkamp 1973-6-14 s.n. Inyo Eastern Sierra Nevada Mtns, Sherwin Grade on US Hwy 395 1982 Comment
  UCR14511  Tetradymia glabrata George K. Helmkamp 1974-6-8 s.n. Inyo Sierra Nevada Mtns, Sherwin Grade north of Bishop 1500 Comment
  UCR81096  Abronia turbinata George K. Helmkamp 1993-6-16 1- 13 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
  UCR99896  Krascheninnikovia lanata George K. Helmkamp 1997-9-30 2506 Inyo Sierra Nevada Mtns., Big Pine Creek 2287 Comment
  UCR99899  Stephanomeria pauciflora George K. Helmkamp 1997-9-30 2503 Inyo Sierra Nevada Mtns., Big Pine Creek 2287 Comment
  UCR99939  Castilleja linariifolia George K. Helmkamp 1997-9-29 2433 Inyo Sierra Nevada Mountains, Onion Valley Road, 7.9 mi west of Hwy US-395 from Independence 2159 Comment
  CLARK-A1045-18  Stephanomeria pauciflora George K. Helmkamp 1977-4-24 Inyo Death Valley National Monument at entrance to Park, along Highway 190, south of Emigrant Pass Comment
  CLARK-A1045-27  Chaenactis stevioides George K. Helmkamp 1977-4-24 Inyo Panamint Mountains east of Townes Pass; 1462 Comment
  CLARK-A1045-47  Encelia virginensis subsp. actonii George K. Helmkamp 1977-4-24 Inyo Panamint Mountains south of Emigrant Pass; dry wash; 1066 Comment
  CLARK-A1045-7  Astragalus lentiginosus var. variabilis George K. Helmkamp 1977-4-24 Inyo Panamint Mountains west slope of Mountains; south of Emigrant Pass; 1066 Comment
  CAS-BOT-BC349465  Monolopia lanceolata G. K. Helmkamp; E. A. Helmkamp 1997-3-7 1385 Kern San Emigdio Ranch, SE portion 945 Comment
  CLARK-A1045-969  Eriogonum gracillimum George K. Helmkamp 1977-6-11 A Kern Red Rock Canyon Southwest edge of El Paso Mountains; entry to Canyon; junction of US Highway 6 and road to California City; ; Cantil 7.5' Q 761 Comment
  RSA613704  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 1998-4-9 3269 Kern Foothills of the Tehachapi Mtns, E of Arvin along CA hwy 223. 305 Comment
  RSA613884  Lotus wrangelianus George K. Helmkamp, E. A. Helmkamp 1998-4-8 3203 Kern SW of Maricopa 1.7 mi NW of CA hwy 33 on Elkhorn Grade Rd. 396 Comment
  RSA613929  Delphinium gypsophilum subsp. gypsophilum George K. Helmkamp 1988-4-9 3251 Kern 14 miles NE of Taft. along Tupman Rd just N of its intersection w/ Ca hwy 199 (W of the outlet canal). 91 Comment
  RSA747126  Plectritis congesta subsp. brachystemon George K. Helmkamp, E. A. Helmkamp 1998-6-29 4189 Kern Tehachapi Mountain Park, 4.2 miles SW of Highline Road along Water Canyon Road 1707 Comment
  SD144467  Astragalus lentiginosus G. K. Helmkamp, E. A. Helmkamp 1997-3-7 1372 Kern SE of Maricopa along Western Minerals Rd near Bitter Creek 427 Comment
  SD148139  Phacelia ciliata G. K. Helmkamp, E. A. Helmkamp 2001-4-27 6537 Kern Enos Lane Road, 1.9 mile south of CA-119, northeast sof Taft. 60 Comment
  SD148150  Trifolium willdenovii G. K. Helmkamp, E. A. Helmkamp 2001-4-27 6554 Kern Temblor Range, 1.1 mile SW of the San luis Obispo county line, open grassy areas 793 Comment
  SD148211  Amsinckia tessellata var. tessellata G. K. Helmkamp, E. A. Helmkamp 2001-4-27 6549 Kern Como Road, 1.9 mile southeast of California 58. 671 Comment
  UCD120807  Plagiobothrys canescens G. K. Helmkamp; E. A. Helmkamp 2001-4-27 6533 Kern Tehachapi Mtns.: CA-223, 7.2 mi E of Arvin. 366 Comment
  UCR100787  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
  UCR101064  Camissonia boothii subsp. decorticans George K. Helmkamp, E. A. Helmkamp 1998-4-9 3253 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
  UCR101071  Gilia malior George K. Helmkamp, E. A. Helmkamp 1998-4-9 3286 Kern W end of city of Mojave, along Airport Blvd. 808 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
  UCR121720  Lupinus excubitus var. austromontanus George K. Helmkamp, E. A. Helmkamp 2001-4-26 6495 Kern East foothills, Tehachapi Mtns, Sand Canyon Rd., 7.3 mi north of Calif. Hwy 58 1341 Comment
  UCR122431  Lupinus microcarpus var. microcarpus George K. Helmkamp, E. A. Helmkamp 2002-4-25 7620 Kern Western Foothills of Tehachapi Mountains, [c. 7 miles ENE of Arvin] along Calif. Hwy 223 [Bear Mtn Blvd.], 2.6 mi SW of its junction with Calif. Hwy 58 518 Comment
  UCR122435  Castilleja exserta subsp. exserta George K. Helmkamp, E. A. Helmkamp 2002-4-25 7624 Kern Western Foothills of Tehachapi Mountains, [c. 7 miles ENE of Arvin] along Calif. Hwy 223 [Bear Mtn Blvd.], 2.6 mi SW of its junction with Calif. Hwy 58 518 Comment
  UCR123416  Salvia columbariae George K. Helmkamp, E. A. Helmkamp 2000-4-25 5605 Kern Tehachapi Mountains, Oak Creek Rd., 1.5 mi east of Tehachapi Willow Springs Rd (about due west of Mojave and SE of Tehachapi. 1189 Comment
  UCR123536  Pinus sabiniana George K. Helmkamp, E. A. Helmkamp 2000-4-25 5593 Kern Tehachapi Mountains, Tehachapi Valley, SE of Tehachapi-Willow Springs Rd and 2.3 mi north of Oak Creek Rd. 1524 Comment
  UCR124024  Phalaris minor George K. Helmkamp, E. A. Helmkamp 2001-4-27 6538 Kern San Joaquin Valley, Enos Lane Rd., 1.9 mi south of Calif. Hwy 119, NE of Taft 61 Comment
  UCR129534  Lupinus microcarpus var. microcarpus George K. Helmkamp, E. A. Helmkamp 1998-5-21 4037 Kern Western Mojave Desert, South base, Tehachapi Mtns., 4.0 mi north of Calif. Hwy 138 (Lancaster Rd) on 300th St. West 1006 Comment
  UCR130381  Oenothera californica George K. Helmkamp, E. A. Helmkamp 1998-5-21 4028 Kern Western Mojave Desert, South base, Tehachapi Mtns., 4.0 mi north of Calif. Hwy 138 (Lancaster Rd) on 300th St. West 1006 Comment
  UCR130383  Lupinus albifrons George K. Helmkamp, E. A. Helmkamp 1998-5-21 4030 Kern Western Mojave Desert, South base, Tehachapi Mtns., 4.0 mi north of Calif. Hwy 138 (Lancaster Rd) on 300th St. West 1006 Comment
  UCR130388  Castilleja exserta subsp. venusta George K. Helmkamp, E. A. Helmkamp 1998-5-21 4035 Kern Western Mojave Desert, South base, Tehachapi Mtns., 4.0 mi north of Calif. Hwy 138 (Lancaster Rd) on 300th St. West 1006 Comment
  UCR130960  Cryptantha flaccida George K. Helmkamp, E. A. Helmkamp 1998-5-13 3549 Kern Southern Sierra Nevada Mtns., Greenhorn Mtns. Foothills, 6.5 mi. SW of Woody along Bakersfield/Glennville Rd (NE of Bakersfield). Near Horse Canyon 396 Comment
  UCR130966  Calochortus venustus George K. Helmkamp, E. A. Helmkamp 1998-5-13 3545 Kern Southern Sierra Nevada Mtns., Greenhorn Mtns. Foothills, 6.5 mi. SW of Woody along Bakersfield/Glennville Rd (NE of Bakersfield). Near Horse Canyon 396 Comment
  UCR157793  Clarkia speciosa George K. Helmkamp, E. A. Helmkamp 1998-6-29 4142 Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 Comment
  UCR157798  Lupinus microcarpus var. densiflorus George K. Helmkamp, E. A. Helmkamp 1998-6-29 4148 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
  UCR157810  Ranunculus testiculatus George K. Helmkamp, E. A. Helmkamp 1998-6-29 4195 Kern Tehachapi Mountains, Tehachapi Mountain Park, 4.2 miles SW of Highline Road along Water Canyon Road 1768 Comment
  UCR157822  Clarkia heterandra George K. Helmkamp, E. A. Helmkamp 1998-6-29 4170 Kern Tehachapi Mountains, Tehachapi Mountain Park, 4.2 miles SW of Highline Road along Water Canyon Road 1768 Comment
  UCR24976  Galium andrewsii 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
  UCR26758  Lupinus microcarpus George K. Helmkamp 1982-5-13 s.n. Kern Tehachapi/San Emigdio Mtns., along Lebec Road, at Lebec 1067 Comment
  UCR26789  Clarkia cylindrica George K. Helmkamp 1982-5-13 s.n. Kern Tehachapi/San Emigdio Mtns., along Lebec Road, at Lebec 1067 Comment
  UCR27492  Lupinus adsurgens 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
  VVC911  Gilia malior G. K. Helmkamp 1998-4-9 3286 Kern Mojave Desert, W end of city of Mojave, along Airport Blvd. 808 Comment
  SEINET11841377  Erigeron foliosus George K. Helmkamp 1982-1 s.n. Kern 4.2 mi above snow gate on road to Mt. Pinos 2134 Comment
  UCR67033  Potentilla rivalis George K. Helmkamp 1990-10-4 M- 3 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  UCR67441  Artemisia tridentata George K. Helmkamp 1990-9-23 D- 7 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  UCR67446  Ephedra viridis George K. Helmkamp 1990-9-23 B- 17 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UCR67469  Madia elegans George K. Helmkamp 1990-10-4 M 11 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  UCR122485  Ericameria cooperi George K. Helmkamp, E. A. Helmkamp 2001-5-2 6659 Los Angeles Western Mojave Desert, Antelope Valley, 0.1 mi west of Calif. Hwy 138 on Ave. W, then 0.3 mi S on [180th St. East] dirt road 976 Comment
  UCR13582  Verbascum virgatum George K. Helmkamp 1973-5-21 s.n. Los Angeles Just south of Padua Hills theater in Claremont 580 Comment
  UCR14497  Linanthus breviculus George K. Helmkamp 1974-6-2 s.n. Los Angeles San Gabriel Mtns., Calif. Hwy 2, 2 miles SW of Calif. Hwy 138, beside Sheep Creek 1524 Comment
  UCR122437  Plectritis ciliosa subsp. ciliosa George K. Helmkamp, E. A. Helmkamp 2002-4-24 7542 Madera Western Sierra Nevada foothills, Auberry Rd (Rd 200/North Fork Rd.) 5.0 mi south of North Fork 503 Comment
  UCR18558  Herniaria cinerea George K. Helmkamp 1974-10-18 s.n. Madera Sierra Nevada Mtns., South Fork of Willow Creek at North Fork 793 Comment
  CLARK-A1045-1221  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-A1045-1401  Carex raynoldsii George K. Helmkamp 1977-8-5 Mariposa Sierra Nevada Porcupine Flats Campground; Yosemite Falls 7.5'Q Comment
  CLARK-A1045-1422  Arabis platysperma George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada 2 miles east of Yosemite Creek on the way to Porcupine Flats, roadside; ; Yosemite Falls 7.5'Q 2682 Comment
  CLARK-A1045-1433  Cryptogramma acrostichoides George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada 2 miles east of Yosemite Creek on the way to Porcupine Flats; rocky ledge along road; ; Yosemite Falls 7.5'Q 2621 Comment
  CLARK-A1045-1434  Arabis rectissima George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada 2 miles east of Yosemite Creek on the way to Porcupine Flats, dry roadside; ; Yosemite Falls 7.5'Q 2621 Comment
  CLARK-A1045-1436  Sitanion hansenii George K. Helmkamp 1977-8-5 Mariposa Sierra Nevada 2 miles east of Yosemite Creek, roadside; ; Yosemite Falls 7.5'Q 2621 Comment
  CLARK-A1045-1438  Streptanthus tortuosus var. orbiculatus George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada 2 miles east of Yosemite Creek, roadside; 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
  UCR87686  Mimulus pilosus George K. Helmkamp, E. A. Helmkamp 1995-6-21 95-1- Mariposa Sierra Nevada Mtns., above Merced River arm of Lake McClure along Calif. Hwy 40, 0.75 mi north of the crossing at Hell Hollow 381 Comment
  RSA614555  Trillium ovatum George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-25 2122 Mendocino Anderson Valley, CA Hwy 128, NW of Boonville. 91 Comment
  RSA614557  Tiarella trifoliata var. unifoliata George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-25 2120 Mendocino Anderson Valley, CA Hwy 128, NW of Boonville. 91 Comment
  RSA614896  Stellaria media George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-25 2107 Mendocino State Hwy 128, 1.5 miles SE of Boonville, in Anderson Valley. 152 Comment
  SEINET244285  Stachys ajugoides var. rigida G. K. Helmkamp, E. A. Helmkamp 2000-6-19 5766 Mendocino North Coast redwood forest: CA-20 (Fort Bragg- Willits Rd) 6.8 mi E of US-1 (S of Fort Bragg). 152 Comment
  SEINET273126  Abronia latifolia G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1997-6-26 2180 Mendocino North Coast 6 Comment
  UCR103945  Chrysanthemum segetum George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-26 2150 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR103947  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2116 Mendocino State Hwy 128, 1.5 mi. SE of Boonville, in Anderson Valley 152 Comment
  UCR121502  Linum bienne George K. Helmkamp, E. A. Helmkamp 2000-6-19 5794 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR131850  Polystichum munitum George K. Helmkamp, E. A. Helmkamp 2000-6-18 5728 Mendocino North Coast, Glass Beach at Fort Bragg 9 Comment
  UCR131856  Sagina maxima subsp. crassicaulis George K. Helmkamp, E. A. Helmkamp 2000-6-18 5745 Mendocino North Coast, Glass Beach at Fort Bragg 9 Comment
  UCR132130  Fuchsia magellanica George K. Helmkamp, E. A. Helmkamp 2000-6-18 5717 Mendocino North Coast, Glass Beach, 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
  UCR145376A  Melica George K. Helmkamp, E. A. Helmkamp 2000-6-18 5710 Mendocino North Coast, along Calif. Hwy 128, approximately 10 mi east of the coast 274 Comment
  UCR67038  Madia glomerata George K. Helmkamp 1990-9-23 I- 26 Modoc Warner Mtns, Goose Lake, within 0.1 mi of the Oregon border 1476 Comment
  CAS-BOT-BC423204  Cleomella parviflora George Helmkamp; E. A. Helmkamp 1993-7-28 166 Mono Sierra Nevada Mountains: Benton's Crossing of Owens River. 2134 Comment
  CLARK-A1045-1041  Nama rothrockii George K. Helmkamp 1977-7-3 Mono Long Valley US Highway 395; June Lake 7.5'Q Comment
  CLARK-A1045-1060  Epilobium lactiflorum George K. Helmkamp 1977-9-1 IV Mono Antelope Valley along River, one mile north of Coleville; ; Coleville 7.5'Q 1676 Comment
  CLARK-A1045-1067  Camissonia tanacetifolia 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-A1045-1101  Valeriana capitata subsp. californica George K. Helmkamp 1977-7-3 Mono Sierra Nevada Tioga Pass 7.5'Q Comment
  CLARK-A1045-1527  Eriogonum caespitosum George K. Helmkamp 1978-5-30 Mono Sierra Nevada north of Conway Summit, along US Highway 395; ; Big Alkali 7.5' Q 2133 Comment
  RSA443502  Salix geyeriana George K. Helmkamp 1987-6-17 s.n. Mono Owens River, Big Springs Campground. 2256 Comment
  RSA602646  Eragrostis mexicana subsp. virescens George K. Helmkamp 1996-9-26 1223 Mono City of Mammoth Lakes. 2470 Comment
  RSA614905  Angelica lineariloba George K. Helmkamp, E. Helmkamp 1997-9-8 2249 Mono South side of Lake Mary, South of Mammoth Lakes. 2744 Comment
  RSA614907  Cirsium andersonii George K. Helmkamp 1997-9-8 2270 Mono South side of Lake Mary, South of Mammoth Lakes. 2744 Comment
  SD232781  Oxytheca dendroidea subsp. dendroidea G. K. Helmkamp 1996-10-17 1256 Mono Disturbed roadisde 0.2 mi south of Benton Hot Springs beside highway CA-120. 1829 Comment
  UCR102584  Castilleja applegatei subsp. pallida George K. Helmkamp, E. A. Helmkamp 1997-9-11 2374 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR102614  Abronia turbinata George K. Helmkamp, E. A. Helmkamp 1997-9-12 2410 Mono Eastern Sierra Nevada/Mono Basin, Big Sand Flat along Calif. Hwy 120 at Pilot Spring Rd., SE of Mono Lake 2125 Comment
  UCR103541  Mimulus mephiticus George K. Helmkamp, E. A. Helmkamp 1997-9-12 2405 Mono Along Calif. Hwy 120, 7.5 mi east of US Hwy 395 2125 Comment
  UCR103832  Calamagrostis canadensis George K. Helmkamp, E. A. Helmkamp 1997-9-11 2367 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR114365  Rorippa curvipes George K. Helmkamp, E. A. Helmkamp 1997-9-8 2280 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR114367  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 1997-9-8 2278 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR115842  Epilobium obcordatum George K. Helmkamp, E. A. Helmkamp 2000-7-18 5879 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
  UCR116022  Ericameria parryi var. nevadensis George K. Helmkamp, E. A. Helmkamp 2000-7-18 5873 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
  UCR121477  Lupinus lepidus var. confertus George K. Helmkamp, E. A. Helmkamp 2000-7-18 5854 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
  UCR121726  Castilleja linariifolia George K. Helmkamp, E. A. Helmkamp 2000-7-19 5935 Mono Sierra Nevada Mountains, McGee Creek Rd about 4 mi SW of US-395 2470 Comment
  UCR121741  Penstemon rostriflorus George K. Helmkamp, E. A. Helmkamp 1998-8-11 4321 Mono White Mountains, White Mountain Road west of the turnoff to Patriarch Bristlecone Pine Grove 3445 Comment
  UCR121743  Castilleja pilosa George K. Helmkamp, E. A. Helmkamp 1998-8-11 4314 Mono White Mountains, White Mountain Road west of the turnoff to Patriarch Bristlecone Pine Grove 3445 Comment
  UCR121748  Linanthus nuttallii subsp. pubescens George K. Helmkamp, E. A. Helmkamp 2000-7-19 5904 Mono Eastern Sierra Nevada Mountains, Rock Creek Lake Rd., 0.8 mi north of the Inyo Co. line 2896 Comment
  UCR121749  Astragalus kentrophyta var. tegetarius George K. Helmkamp, E. A. Helmkamp 1998-8-11 4318 Mono White Mountains, White Mountain Road west of the turnoff to Patriarch Bristlecone Pine Grove 3445 Comment
  UCR123134  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 1998-8-13 4401 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR123391  Symphoricarpos rotundifolius var. rotundifolius George K. Helmkamp, E. A. Helmkamp 1998-8-13 4422 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR123393  Eriogonum umbellatum var. nevadense George K. Helmkamp, E. A. Helmkamp 1998-8-13 4436 Mono Eastern Sierra Nevada Mountains, Mono Craters. Pumice Mine Rd, 0.9 mi north of Devil's Punch Bowl 2439 Comment
  UCR123460  Cirsium scariosum George K. Helmkamp, Elizabeth Helmkamp 1999-10-16 5320 Mono Sierra Nevada Mountains, Along Owens River, 0.6 mi NW of Benton's Crossing. 2119 Comment
  UCR123466  Pyrrocoma uniflora var. uniflora George K. Helmkamp, Elizabeth Helmkamp 1999-10-16 5323 Mono Sierra Nevada Mountains, Along Owens River, 0.6 mi NW of Benton's Crossing. 2119 Comment
  UCR123672  Azolla filiculoides George K. Helmkamp, Elizabeth Helmkamp 1999-10-16 5324 Mono Sierra Nevada Mountains, Along Owens River, 0.6 mi NW of Benton's Crossing. 2119 Comment
  UCR129552  Descurainia californica George K. Helmkamp, E. A. Helmkamp 2001-7-8 6825 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR132155  Endolepis covillei George K. Helmkamp, E. A. Helmkamp 1993-7-28 167 Mono Eastern Sierra Nevada /Owens Valley, Benton's Crossing of Owens River 2134 Comment
  UCR132157  Puccinellia lemmonii George K. Helmkamp, E. A. Helmkamp 1993-7-28 169 Mono Eastern Sierra Nevada /Owens Valley, Benton's Crossing of Owens River 2134 Comment
  UCR132552  Eriogonum umbellatum var. nevadense George K. Helmkamp, E. A. Helmkamp 1993-7-28 189 Mono Sierra Nevada Mountains, Long Valley mesa at the junction of Owens River Road and Lake Crowley 2104 Comment
  UCR134461  Pyrrocoma apargioides George K. Helmkamp, E. A. Helmkamp 1998-8-11 4339 Mono White Mountains, Campito Meadow, west of White Mountain Road at Poison Creek 3293 Comment
  UCR13829  Oenothera xylocarpa George K. Helmkamp 1973-6-14 s.n. Mono Owens Valley, US 395, 1.5 mi north of Mammoth turn-off 2250 Comment
  UCR140988  Trisetum spicatum George K. Helmkamp, E. A. Helmkamp 1998-8-11 4315 B Mono White Mountains, White Mountain Road west of the turnoff to Patriarch Bristlecone Pine Grove 3445 Comment
  UCR14379  Abronia turbinata George K. Helmkamp 1974-7-27 s.n. Mono Owens Valley, N of Bishop, 16 mi. north of Tom's Place 2287 Comment
  UCR15017  Gayophytum diffusum subsp. parviflorum George K. Helmkamp 1976-6-22 s.n. Mono Sierra Nevada Mtns, Mammoth Lakes 2409 Comment
  UCR15461  Pyrrocoma uniflora George K. Helmkamp 1977-8-7 s.n. Mono Eastern Sierra/Owens Valley, Owens River Valley, just north of Benton Crossing 2104 Comment
  UCR15498  Antirrhinum kingii George K. Helmkamp 1978-5-29 s.n. Mono East Walker River at the Nevada border 1829 Comment
  UCR15555  Trifolium monoense George K. Helmkamp 1978-5-30 s.n. Mono Eastern Sierra Nevada Mtns., c. 2 mi north of Conway Summit of Hwy US-395 2134 Comment
  UCR15590  Cryptantha confertiflora George K. Helmkamp 1978-5-29 s.n. Mono East Walker River at the Nevada border 1829 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
  UCR26643  Phacelia inyoensis George K. Helmkamp 1982-7-1 s.n. Mono Owens Valley, along the Owens River at Arcularius Ranch 2149 Comment
Read comments
May 31 2011
  UCR40775  Carex nebrascensis George K. Helmkamp 1985-8-20 885 5 Mono Owens Valley, along the Owens River, at Big Springs Campground, 7 air miles NE of Mammoth Lakes, above Arcularius Ranch 2195 Comment
  UCR40967  Chenopodium incognitum George K. Helmkamp 1985-8-20 885- 09 Mono Owens Valley, along the Owens River, at Big Springs Campground, 7 air miles NE of Mammoth Lakes, above Arcularius Ranch 2195 Comment
  UCR41047  Juncus balticus var. montanus George K. Helmkamp 1985-8-20 885 3 Mono Owens Valley, along the Owens River, at Big Springs Campground, 7 air miles NE of Mammoth Lakes, above Arcularius Ranch 2195 Comment
  UCR51460  Tanacetum potentilloides George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Owens River, 1 mi upstream from Benton Crossing 2073 Comment
  UCR51465  Eleocharis macrostachya George K. Helmkamp 1987-6-17 s.n. Mono Eastern Sierra Nevada Mtns., Campground at canyon, W base of Glass Mountain, 5 miles east of Owens River 2256 Comment
  UCR51568  Glaux maritima George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Owens River, 1 mi upstream from Benton Crossing 2073 Comment
  UCR51570  Monolepis nuttalliana George K. Helmkamp 1987-6-17 s.n. Mono Eastern Sierra Nevada Mtns., Campground at canyon, W base of Glass Mountain, 5 miles east of Owens River 2256 Comment
  UCR51575  Phlox condensata George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Owens River, Brown's Camp at Benton Crossing 2073 Comment
  UCR51899  Chorizanthe brevicornu var. spathulata George K. Helmkamp 1978-5-28 s.n. Mono Lower Rock Creek 1677 Comment
  UCR57513  Chenopodium incognitum 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
  UCR57518  Senecio hydrophilus George K. Helmkamp 1989-7-21 s.n. Mono Owens Valley/Eastern Sierra, S of Mammoth Village and at the edge of Snow Creek 2439 Comment
  UCR57544  Agrostis scabra George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR58457  Elymus smithii George K. Helmkamp 1989-8-1 s.n. Mono Eastern Sierra Nevada Mountains, US Hwy 395, just south of the summit of Devil's Gate Pass 2256 Comment
  UCR59788  Artemisia douglasiana George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR59854  Anthemis cotula 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
  UCR82202  Polygonum amphibium var. stipulaceum George K. Helmkamp 1994-7-28 104- 01 Mono Long Valley, 2.5 mi. NW of Benton's Crossing bridge of the Owens River 2119 Comment
  UCR82207  Eriogonum baileyi var. baileyi George K. Helmkamp 1994-7-28 108- 5 Mono Owens Valley, O'Harrell Canyon, NW of Benton Crossing on the Owens River 2345 Comment
  UCR82259  Muhlenbergia asperifolia George K. Helmkamp 1994-7-28 107- 01 Mono Long Valley, 2.5 mi. NW of Benton's Crossing bridge of the Owens River 2119 Comment
  UCR88222  Ceanothus velutinus subsp. velutinus George K. Helmkamp 1995-9-21 95-2- 2 Mono Sierra Nevada Mtns., roadside at the Swiss Chalet Motel, Mammoth Lakes 2424 Comment
  UCR88281  Carex heteroneura var. heteroneura George K. Helmkamp 1995-9-21 1 14 Mono Eastern Sierra Nevada Mountains, south edge of Lake Mary, south of Mammoth Lakes 2805 Comment
  UCR88286  Eriastrum wilcoxii George K. Helmkamp 1995-9-21 01- 02 Mono Sierra Nevada Mtns., south edge of Lake Mary, south of Lake Mary, Mammoth Lakes 2805 Comment
  UCR89410  Poa cusickii George K. Helmkamp 1990-8-2 s.n. Mono Sierra Nevada Mtns, between Mammoth and Lake Mary 2591 Comment
  UCSB37384  Leptosiphon nuttallii subsp. nuttallii Helmkamp, G. 1973-6-14 Mono Hot Creek Road, ca. 5 mi. E of US 395 Comment
  IRVC28175  Cryptantha muricata G. K. Helmkamp, E. A. Helmkamp 2000-4-24 5496 Monterey Nacimiento Rd. 12 mi N of Gorda and 3.8 mi E of CA-1. Central outer coast ranges. 549 Comment
  RSA709022  Lupinus formosus var. formosus George K. Helmkamp, E. A. Helmkamp 2005-5-12 9434 Monterey Central Coast Ranges: 8 mi west of US-101 on Hwy CA-G-18 in Hames Valley. 341 Comment
  SD148081  Ceanothus thyrsiflorus G. K. Helmkamp 2000-4-21 5435 Monterey Los Padres National Forest; Nacimiento Rd., 0.7 mi east of CA-1 (Nacimiento Rd. is about 12 miles north of Gorda) 548 Comment
  UCR107274  Lithophragma parviflorum var. parviflorum George K. Helmkamp, E. A. Helmkamp 1998-5-14 3677 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR107295  Lupinus microcarpus var. densiflorus George K. Helmkamp, E. A. Helmkamp 1998-5-14 3657 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR107297  Caucalis microcarpa George K. Helmkamp, E. A. Helmkamp 1998-5-14 3656 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR107320  Ericameria linearifolia George K. Helmkamp, E. A. Helmkamp 1998-5-14 3648 Monterey Coast Range, Peachtree Valley, along Calif. Hwy 198, 6.2 mi. west of the Fresno/Monterey County lines. 503 Comment
  UCR118264  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2000-4-24 5508 ` 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
  UCR118271  Caucalis microcarpa George K. Helmkamp, E. A. Helmkamp 2000-4-24 5522 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
  UCR118273  Castilleja exserta subsp. exserta George K. Helmkamp, E. A. Helmkamp 2000-4-24 5525 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
  UCR118279  Sidalcea malviflora subsp. malviflora George K. Helmkamp, E. A. Helmkamp 2000-4-24 5537 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
  UCR121614  Agoseris retrorsa George K. Helmkamp, E. A. Helmkamp 2002-4-22 7609 Monterey Salinas Valley, 13.3 mi east of US-101 along Calif. Hwy 198 in the general area of Mustang Ridge 457 Comment
  UCR122567  Stipa lepida George K. Helmkamp, E. A. Helmkamp 2000-4-21 5432 Monterey Central Coast, Los Padres National Forest. Nacimiento-Ferguson Rd., 0.7 mi east of CA Hwy 1, c. 12 mi north of Gorda 549 Comment
  UCR123082  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 2002-4-19 7490 Monterey Santa Lucia Mountains, Los Burros Rd. (N of Gorda); 2.4 mi east of Calif. Hwy 1 473 Comment
  UCR127071  Spergularia rubra George K. Helmkamp, E. A. Helmkamp 1998-5-19 3856 Monterey Reservoir area., San Antonio Rd 0.7 mi north of G-14 (Interlake Rd between San Antonio and Nacimiento reservoirs) 335 Comment
  UCR127073  Allium peninsulare var. peninsulare George K. Helmkamp, E. A. Helmkamp 1998-5-19 3854 Monterey Reservoir area., San Antonio Rd 0.7 mi north of G-14 (Interlake Rd between San Antonio and Nacimiento reservoirs) 335 Comment
  UCR127078  Camissonia contorta George K. Helmkamp, E. A. Helmkamp 1998-5-19 3836 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127079  Castilleja exserta subsp. exserta George K. Helmkamp, E. A. Helmkamp 1998-5-19 3835 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127112  Polycarpon tetraphyllum George K. Helmkamp, E. A. Helmkamp 1998-5-19 3865 Monterey Reservoir area., San Antonio Rd 0.7 mi north of G-14 (Interlake Rd between San Antonio and Nacimiento reservoirs) 335 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
  UCR130049  Vicia villosa subsp. varia George K. Helmkamp, E. A. Helmkamp 2000-4-24 5580 Monterey Salinas Valley, 3.0 miles south of Lockwood on Tule Cyn [Interlake] Rd. 244 Comment
  UCR130092  Linanthus parviflorus George K. Helmkamp, E. A. Helmkamp 2000-4-24 5576 A Monterey Salinas Valley, 3.0 miles south of Lockwood on Tule Cyn [Interlake] Rd. 244 Comment
  UCR130601  Lupinus variicolor George K. Helmkamp, E. A. Helmkamp 1999-5-21 4843 Monterey Santa Lucia Mtns./Central Coast, Willow Creek, north of Gorda beside Calif. Hwy 1 30 Comment
  UCR130603  Stachys bullata George K. Helmkamp, E. A. Helmkamp 1999-5-21 4845 Monterey Santa Lucia Mtns./Central Coast, Willow Creek, north of Gorda beside Calif. Hwy 1 30 Comment
  UCR130608  Cardamine californica var. californica George K. Helmkamp, E. A. Helmkamp 1999-5-21 4853 Monterey Santa Lucia Mountains, Willow Creek Rd 1.7 mi east of Calif. Hwy 1 north of Gorda 290 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
  UCR158821  Prunus ilicifolia subsp. ilicifolia George K. Helmkamp, E. A. Helmkamp 2005-5-12 9443 Monterey Central Coast Ranges, 8 mi west of US-101 on Calif. Highway G18 in Hames Valley 341 Comment
  UCR158823  Lupinus formosus var. formosus George K. Helmkamp, E. A. Helmkamp 2005-5-12 9434 Monterey Central Coast Ranges, 8 mi west of US-101 on Calif. Highway G18 in Hames Valley 341 Comment
  UCR159384  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2005-5-12 9464 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  UCR159432  Delphinium parryi George K. Helmkamp, E. A. Helmkamp 2005-5-12 9449 Monterey Central Coast Ranges, 4 mi west of US-101 on Calif. Hwy G18 in Hames Valley 233 Comment
  UCR160752  Eriodictyon californicum George K. Helmkamp, E. A. Helmkamp 2005-6-5 9523 Monterey Outer Central Coast Ranges; Santa Lucia Range, 5.0 mi east of Calif. Hwy 1 along Los Burros Road 826 Comment
  UCR67453  Epilobium canum subsp. canum George K. Helmkamp 1990-9-5 s.n. Monterey Central Coast, 2 miles north of Gorda 46 Comment
  UCR67458  Lessingia filaginifolia George K. Helmkamp 1990-9-5 s.n. Monterey Central Coast, 2 miles north of Gorda 46 Comment
  CAS-BOT-BC520358  Galium parisiense George K. Helmkamp; Elizabeth Helmkamp 2013-5-30 20716 Nevada Northern Sierra Nevada Mountains Foothills: along Hwy CA-20, 3.5 mi W of CA-49 in Grass Valley 623 Comment
  JEPS119461  Madia exigua George K. Helmkamp with 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 Comment
  RSA0012010  Lotus micranthus George K. Helmkamp, E. A. Helmkamp 2010-8-26 16854 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
  RSA0012016  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 2010-8-26 16849 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
  RSA0012030  Agrostis stolonifera George K. Helmkamp, E. A. Helmkamp 2010-8-26 16851 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
  RSA0012086  Navarretia leucocephala subsp. minima George K. Helmkamp, E. A. Helmkamp 2011-7-26 17873 Nevada 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
  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
  RSA0093482  Bidens frondosa George K. Helmkamp, E. A. Helmkamp 2012-10-8 19999 Nevada Northern Sierra Nevada Mountains Foothills. Higgins Corner; Combie Road, 0.1 mile east of its junction with CA-49, between Auburn and Grass Valley. 445 Comment
  RSA794536  Chlorogalum pomeridianum var. pomeridianum George K. Helmkamp, E. A. Helmkamp 2011-7-17 17750 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
  RSA794586  Eriogonum umbellatum var. polyanthum George K. Helmkamp, E. A. Helmkamp 2010-8-26 16837 Nevada South Fork Yuba River, Forest Route 85 (Fordyce Lake Rd) north of Hampshire Rocks Road and I-80, 1 mi. NNW (351 deg.) of Cisco. 1634 Comment
  RSA794690  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp 2011-7-17 17738 Nevada Red Dog Road, 1.6 miles northeast of its junction with You Bet Road, 3 miles NE (313 deg ) of Gold Run 867 Comment
  SBBG128648  Heuchera micrantha G. K. Helmkamp, E. A. Helmkamp 2011-6-9 17523 Nevada Tyler Foote Crossing Rd, 3.3 mi N of its jct with Grizzly Hill Rd, NE of N Columbia near the Sierra Co line/Middle Yuba River 878 Comment
  SD239903  Tellima grandiflora George K. Helmkamp, E. A. Helmkamp 2011-6-9 17497 Nevada Northern Sierra Nevada Mountains Foothills: Tyler Foote Crossing Road, 1.6 miles north of its junction with Grizzly Hill Road, generally north of North Columbia (Pike 7.5'Q) 929 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
  SD247317  Chondrilla juncea George K. Helmkamp, E. A. Helmkamp 2013-10-10 22389 Nevada Sierra Nevada Mountains Foothills: junction of Combie Road and Timber Ridge Drive southeast of Higgins Corner near Lake of the Pines. 455 Comment
  SD255843  Ceanothus cuneatus subsp. cuneatus George K. Helmkamp, Elizabeth Helmkamp 2014-2-22 22530 Nevada Sierra Nevada Mountains Foothills: Garden Bar Road, 2.8 road miles west of Wolf Road at Wolf, 3.9 air miles WNW (287a^z) of Higgins Corner (Wolf 7.5'Q) 387 Comment
  SD257221  Plagiobothrys fulvus var. campestris George K. Helmkamp 2014-4-17 22742 Nevada Northern Sierra Nevada Mountains Foothills, along CA-120, 2.3 miles west of its junction with CA 49 in Grass Valley. 729 Comment
  SEINET11261850  Collomia grandiflora George Helmkamp, E. A. Helmkamp 2011-7-26 17882 Nevada Northern Sierra Nevada Mountains: along CA Hwy 20, .8 mi east of Bowman Lake Road, 1.23 mi. NE (501/4) of Emigrant Gap and .35 mi. N of I-80 (Blue Canyon 7.5 Q.); 0 1541 Comment
  SEINET11261861  Mimulus moschatus George Helmkamp, E. A. Helmkamp 2011-7-26 17878 Nevada Northern Sierra Nevada Mountains: along CA Hwy 20, .8 mi east of Bowman Lake Road, 1.23 mi. NE (501/4) of Emigrant Gap and .35 mi. N of I-80 (Blue Canyon 7.5 Q.); 0 1541 Comment
  SEINET4560748  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2011-1 18355 Nevada Foothills, northern Sierra Nevada Mountains: Mule Spring Rd. off Lowell Hill Road, 6.2 miles northeast of Lowell Hill junction with Dutch Flat X Road at lower end of Bear River Reservoir. 1189 Comment
  SEINET4691350  Aegilops triuncialis George K. Helmkamp, E. A. Helmkamp 2011-1 17789 Nevada Northern Sierra Nevada Mountains Foothills: You Bet Road just northeast of its junction with CA-174, 1.25 mi east (91 degrees) of Peardale 778 Comment
  SEINET6655409  Lupinus latifolius var. columbianus George K. Helmkamp, E. A. Helmkamp 2007-5-26 12119 Nevada Northern Sierra Nevada Mountains Foothills: along CA-49; 1.2 miles north of North San Juan.; 0 1000 Comment
  UCD101031  Rumex acetosella G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12613 Nevada Northern Sierra Nevada Mountains: Bowman Lake Road, 11.2 miles north of its junction with CA-20. 1793 Comment
  UCD103342  Geranium dissectum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-11 10370 Nevada Northern Sierra Nevada Mountains. Cedarsong Road, 0.1 mile NE of CA-Hwy 49 (NW of Nevada City). 637 Comment
  UCD104061  Acmispon brachycarpus G. K. Helmkamp; E. A. Helmkamp 2006-10-10 11520 Nevada Northern Sierra Mountains Foothills: along Hwy. CA-49, 5.8 miles NNW of Nevada City. 750 Comment
  UCD111222  Trifolium hybridum G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11238 Nevada Northern Sierra Nevada Mtns.: just south of I-80 on Lake Valley Rd. 1755 Comment
  UCD122211  Mimulus aurantiacus G. K. Helmkamp; Elizabeth Helmkamp 2006-5-11 10400 Nevada Northern Sierra Nevada Foothills, CA Hwy 49 at the crossing of the South Yuba River (N of Nevada City). 402 Comment
  UCD122814  Mimulus moschatus G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11233 Nevada Northern Sierra Nevada Mtns: just south of I-80 on Lake Valley Rd. 1755 Comment
  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
  UCD63221  Agrostis pallens G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11247 Nevada Northern Sierra Nevada Mtns.: about 0.7 mile east of Donner Pass along Donner Pass Rd. 2041 Comment
  UCD95537  Aquilegia formosa G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12601 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
  UCD95952  Ranunculus californicus G. K. Helmkamp; Elizabeth Helmkamp 2006-5-11 10379 Nevada Northern Sierra Nevada Mountains. Cedarsong Road, 0.1 mile NE of CA-Hwy 49 (NW of Nevada City). 637 Comment
  UCR173342  Cytisus scoparius George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10396 Nevada Northern Sierra Nevada Foothills, Calif. Hwy 49 at the crossing of the South Yuba River (N of Nevada City) 402 Comment
  UCR173530  Madia gracilis George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10399 Nevada Northern Sierra Nevada Foothills, Calif. Hwy 49 at the crossing of the South Yuba River (N of Nevada City) 402 Comment
  UCR173536  Luzula comosa George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10405 Nevada Northern Sierra Nevada Foothills, San Juan Ridge area at North Columbia, c. 9.3 mi. east of Calif. Hwy 49 884 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
  UCR173690  Bromus hordeaceus George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10390 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR176535  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2006-8-14 11225 Nevada Northern Sierra Nevada Mtns, just south of I-80 on Lake Valley Rd 1755 Comment
  UCR176537  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2006-8-14 11228 Nevada Northern Sierra Nevada Mtns, just south of I-80 on Lake Valley Rd 1755 Comment
  UCR177014  Bromus sterilis George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10407 Nevada Northern Sierra Nevada Foothills, San Juan Ridge area at North Columbia, c. 9.3 mi. east of Calif. Hwy 49 884 Comment
  UCR188862  Navarretia divaricata subsp. divaricata George K. Helmkamp, E. A. Helmkamp 2007-7-27 12611 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 11.2 miles north of its junction with CA-20 1793 Comment
  UCR189042  Apocynum androsaemifolium George K. Helmkamp, E. A. Helmkamp 2007-7-27 12616 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 11.2 miles north of its junction with CA-20 1793 Comment
  UCR194875  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2007-5-26 12125 Nevada Northern Sierra Nevada Mountains Foothills, along CA-49, 1.2 miles north of North San Juan 610 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
  UCR200884  Ericameria arborescens George K. Helmkamp, E. A. Helmkamp 2008-9-18 14132 Nevada Foothills, northern Sierra Nevada Mountains, Along Marysville Road, 0.8 mile southwest of its junction with CA-49 595 Comment
  UCR229472  Heterocodon rariflorum George K. Helmkamp, E. A. Helmkamp 2011-7-26 17874 A 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
  UCR229551  Epilobium ciliatum subsp. glandulosum George K. Helmkamp, E. A. Helmkamp 2011-7-26 17887 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
  UCR230091  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2011-5-26 17393 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
  UCR230110  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2011-5-26 17382 Nevada Northern Sierra Nevada Mountains Foothills, SE of Grass Valley near Rollins Reservoir dam, along CA-174 NNW of Colfax, just west of the bridge over Bear River 613 Comment
  UCR232276  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-9-30 18362 Nevada Northern Sierra Nevada Mountains, small, open flat along CA-20, 2.6 miles west of its junction with Lowell Hill Road 1581 Comment
  UCR232616  Bidens frondosa George K. Helmkamp, E. A. Helmkamp 2011-9-30 18350 Nevada Northern Sierra Nevada Mountains Foothills, Dutch Flat X Road (extension of Diggins Hill Road), 3.1 miles northeast of Dutch Flat and north of the Bear River Reservoir 854 Comment
  UCR232660  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2011-9-30 18355 Nevada Foothills, northern Sierra Nevada Mountains, Mule Spring Rd. off Lowell Hill Road, 6.2 miles northeast of Lowell Hill junction with Dutch Flat X Road at lower end of Bear River Reservoir 1189 Comment
  UCR233094  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2011-7-17 17739 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
  UCR233202  Agrostis pallens George K. Helmkamp, E. A. Helmkamp 2011-7-17 17772 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 deg. ) of Peardale 686 Comment
  UCR233650  Fraxinus latifolia George K. Helmkamp, E. A. Helmkamp 2011-7-17 17760 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 deg. ) of Peardale 686 Comment
  UCR233656  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2011-7-17 17773 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 deg. ) of Peardale 686 Comment
  UCR233685  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2010-8-26 16848 Nevada Northern Sierra Nevada Mountains, Donner Pass Road, 0.8 mile west of its junction with Hwy. I-80, 0.65 mi. NE (62 deg. ) of Kingvale 1921 Comment
  UCR233687  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2010-8-26 16862 Nevada Northern Sierra Nevada Mountains, Donner Pass Road, 0.8 mile west of its junction with Hwy. I-80, 0.65 mi. NE (62 deg. ) of Kingvale 1921 Comment
  UCR234582  Triteleia ixioides subsp. scabra George K. Helmkamp, E. A. Helmkamp 2011-6-2 17438 Nevada Northern Sierra Nevada Mountains Foothills, Lake Wildwood, along Pleasant Valley Road, 1.2 miles north of its junction with CA-20 433 Comment
  UCR234626  Agrostis stolonifera George K. Helmkamp, E. A. Helmkamp 2010-8-26 16843 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
  UCR234641  Dichelostemma multiflorum George K. Helmkamp, E. A. Helmkamp 2011-6-2 17440 Nevada Northern Sierra Nevada Mountains Foothills, Lake Wildwood, along Pleasant Valley Road, 1.2 miles north of its junction with CA-20 433 Comment
  UCR234643  Linum bienne George K. Helmkamp, E. A. Helmkamp 2011-6-2 17442 Nevada Northern Sierra Nevada Mountains Foothills, Lake Wildwood, along Pleasant Valley Road, 1.2 miles north of its junction with CA-20 433 Comment
  UCR234648  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2011-6-2 17446 Nevada Northern Sierra Nevada Mountains Foothills, 2 miles SW (241 deg. ) of French Corral, Pleasant Valley Road just south of the bridge over the South Fork of the Yuba River 180 Comment
  UCR234649  Aster integrifolius George K. Helmkamp, E. A. Helmkamp 2010-8-26 16824 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
  UCR237361  Juncus effusus George K. Helmkamp, E. A. Helmkamp 2012-6-13 19204 Nevada Northern Sierra Nevada Mountains Foothills, Maybert Road along South Yuba River, 0.6 mi. northeast of the river bridge at Washington 796 Comment
  UCR237363  Aspidotis densa George K. Helmkamp, E. A. Helmkamp 2012-6-13 19205 Nevada Northern Sierra Nevada Mountains Foothills, Maybert Road along South Yuba River, 0.6 mi. northeast of the river bridge at Washington 796 Comment
  UCR237368  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-6-13 19192 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
  UCR237369  Lepidium virginicum George K. Helmkamp, E. A. Helmkamp 2012-6-13 19177 Nevada Northern Sierra Nevada Mountains Foothills, Washington Road, 5.6 miles north of its junction with CA-20 and along Washington Creek 787 Comment
  UCR237374  Spergularia villosa George K. Helmkamp, E. A. Helmkamp 2012-6-13 19170 Nevada Northern Sierra Nevada Mountains Foothills, Washington Road, 3.6 miles north of its junction with CA-20 1006 Comment
  UCR241726  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2012-9-25 19937 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 0.1 mile south of the bridge over the South Fork Yuba River 1424 Comment
  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
  UCR241749  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2012-9-25 19925 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 1.2 miles north of CA-20, N of I-80 between Grass Valley and Truckee 1427 Comment
  UCR242599  Madia rammii George K. Helmkamp, E. A. Helmkamp 2011-6-2 17415 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 1.5 miles west of its junction with CA-49 in Grass Valley 727 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
  UCR257031  Linum bienne George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20717 Nevada Northern Sierra Nevada Mountains Foothills, along Hwy CA-20, 3.5 miles west of CA-49 in Grass Valley 623 Comment
  UCR257089  Quercus douglasii George K. Helmkamp 2014-4-17 22745 Nevada Northern Sierra Nevada Mountains Foothills, along CA-120, 2.3 miles west of its junction with CA-49 in Grass Valley 729 Comment
  UCR257153  Sanicula bipinnatifida George K. Helmkamp 2014-4-17 22740 Nevada Northern Sierra Nevada Mountains Foothills, along CA-120, 2.3 miles west of its junction with CA-49 in Grass Valley 729 Comment
  UCR257158  Pinus ponderosa George K. Helmkamp, Elizabeth Helmkamp 2013-10-10 22387 Nevada Sierra Nevada Mountains Foothills, junction of Combie Road and Timber Ridge Dr. southeast of Higgins Corner near Lake of the Pines 456 Comment
  UCR257814  Artemisia spiciformis George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19479 Nevada Northern Sierra Nevada Mountains, Stampede Meadows Road, c. 0.65 mile south of the Sierra County line 1738 Comment
  UCR258184  Kickxia elatine George K. Helmkamp, Elizabeth Helmkamp 2012-10-16 20029 Nevada Sierra Nevada Mountains Foothills, Robles Dr., south of the junction of Combie Road and Darkhorse Drive, 2.8 air miles SE (124 deg. ) of Higgins Corner 445 Comment
  SBBG129007  Collinsia sparsiflora var. sparsiflora G. K. Helmkamp, E. A. Helmkamp 2012-4-21 18821 Nevada McCourtney Rd, 0.4 mi E of its jct with Perimeter Rd, 14.5 mi NW (338 deg) of Auburn 407 Comment
  CAS-BOT-BC434223  Lasthenia californica George K. Helmkamp 2013-3-1 20150 Placer Sacramento Valley: Ranch House Road, 0.6 mile southeast of Riosa Road in Sheridan. 37 Comment
  CAS-BOT-BC434224  Lupinus albicaulis George K. Helmkamp; Mary Alice Barnes 2013-5-3 20460 Placer Foothills, northern Sierra Nevada Mountains: SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road. 974 Comment
  CAS-BOT-BC438823  Lupinus microcarpus var. densiflorus George K. Helmkamp; Mary Alice Barnes 2013-5-3 20459 Placer Northern Sierra Nevada Mountains Foothills: Forest Hill Road, 4.8 miles east of its junction with Upper Clementine Lake Road, 10.1 mi. NE (52 deg. ) of Auburn. 672 Comment
  CAS-BOT-BC438824  Silene vulgaris George K. Helmkamp; Mary Alice Barnes 2013-5-3 20462 Placer Foothills, northern Sierra Nevada Mountains: SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road. 974 Comment
  CAS-BOT-BC438826  Hypochaeris glabra George K. Helmkamp; Mary Alice Barnes 2013-5-3 20464 Placer Foothills, northern Sierra Nevada Mountains: SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road. 974 Comment
  CAS-BOT-BC438828  Lupinus nanus George K. Helmkamp; Mary Alice Barnes 2013-5-3 20471 Placer Foothills, northern Sierra Nevada Mountains: Mosquito Ridge Road, 1.1 miles south of Forest Hill Road. 962 Comment
  CAS-BOT-BC438832  Barbarea orthoceras George K. Helmkamp; Mary Alice Barnes 2013-5-3 20485 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
  CAS-BOT-BC518712  Castilleja applegatei subsp. pinetorum George K. Helmkamp; E. A. Helmkamp 2012-6-19 19212 Placer Northern Sierra Nevada Mountains Foothills: Mosquite Ridge Rd, 2.7 mi S of jct with Foresthill Rd 820 Comment
  CHSC114159  Quercus wislizeni G. K. Helmkamp; E. A. Helmkamp 2010-4-17 15883 Placer Sierra Nevada Mountains Foothills: Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA 49 near Pilot Hill. 314 Comment
  RSA0028446  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2010-4-23 15904 Placer along Salmon Falls Road, at Miners Valley Rd., 4.5 miles south of junction with CA-49 at Pilot Hill. 287 Comment
  RSA0035849  Barbarea orthoceras George K. Helmkamp, Mary Alice Barnes 2013-4-18 20349 Placer Yankee Jim Road, 0.9 mile east of its junction with Canyon Way, 4.4 miles SE (167 ) of Colfax 561 Comment
  RSA0039077  Galium aparine George K. Helmkamp, Mary Alice Barnes 2013-5-3 20466 Placer SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road 974 Comment
  RSA0053706  Lupinus lepidus var. sellulus G. K. Helmkamp, E. A. Helmkamp 2012-6-19 19221 Placer Northern Sierra Nevada Mountains: Devil's Thumb Road (Deadwood Rd.), 1.2 miles S of its junction with Foresthill Road 1648 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
  RSA779398  Apocynum cannabinum George K. Helmkamp, Amy Barnes 2009-7-12 15190 Placer along Todd Valley Road, 0.1 mile south of its junction with Foresthill Road, c. 13 air miles NE of Auburn 854 Comment
  RSA782371  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2010-4-23 15913 Placer along Salmon Falls Road, at Miners Valley Rd., 4.5 miles south of junction with CA-49 at Pilot Hill 287 Comment
  SBBG122297  Limnanthes alba G. K. Helmkamp with E. A. Helmkamp 2008-4-17 13290 Placer Sacramento Valley Ranch House Rd, 0.2 mi SE of Sheridan 37 Comment
  SD235010  Prunus emarginata G. K. Helmkamp, E. A Helmkamp 2008-8-20 14028 Placer Northern Sierra Nevada Mountains: Donner Pass Road on the west side of Donner Pass and East of Norden (Norden 7.5' Q) 2149 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
  SD236324  Limnanthes alba subsp. alba G. K. Helmkamp, E. A. Helmkamp 2008-4-17 13290 Placer Sacramento Valley: Ranch House Road, 0.2 mile southeast of Sheridan 36 Comment
  SD237340  Madia elegans subsp. vernalis G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15935 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River. 156 Comment
  SD237434  Lupinus bicolor G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15923 Placer Sierra Nevada Mountains Foothills: along Salmon Falls Road, 5.6 miles south of junction with CA-49 at Pilot Hill, 0.65 mil north of the American River crossing (Pilot Hill 7.5'Q) 199 Comment
  SD237462  Geranium molle G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15910 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
  SD241936  Aquilegia formosa George K Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19797 Placer Northern Sierra Nevada Mountains: along Forest Hill Road at junction with Hidden Treasure Road, ca. 0.4 mile NE of Sugar Pine Road (Michigan Bluff 7.5'Q) 1384 Comment
  SD243158  Nama lobbii George K. Helmkamp, E. A. Helmkamp 2010-8-14 16801 Placer Northern Sierra Nevada Mountains: American Hill Road, 1.2 miles south of its junction with Foresthill Road. 1566 Comment
  SD243209  Diplacus mephiticus George K. Helmkamp, E. A. Helmkamp 2010-7-28 16679 Placer Northern Sierra Nevada Mountains: Forest Hill Road, 1.8 miles east of Forest Route 13 / American Hill Road. Burned area north of road. 1662 Comment
  SD247298  Lomatium dissectum George K. Helmkamp, Mary Alice Barnes 2013-4-18 20336 Placer Northern Sierra Nevada Mountains Foothills: Yankee Jim Road, 0.9 mile east of its junction with Canyon Way, 4.4 miles southeast (167 degrees) of Colfax. 561 Comment
  SD247365  Myosotis scorpioides George K. Helmkamp, E. A. Helmkamp 2012-6-19 19248 Placer Northern Sierra Nevada Mountains; Robinson's Flat,27 miles east of Forest Hill at the end of Forest Hill Road. 2040 Comment
  SD247426  Medicago polymorpha George Helmkamp 2013-3-1 20149 Placer Sacramento Valley: Ranch House Road, 0.6 mile southeast of Riosa Road in Sheridon (Lincoln 7.5'Q) 36 Comment
  SD247434  Trifolium tomentosum George Helmkamp, Amy Barnes 2013-3-28 20299 Placer Eastern Sacramento Valley: Northwest side of junction if Riosa Road and Andressen Road, northeast of Sheridan (Lincoln 7.5'Q) 35 Comment
  SD247474  Leptosiphon harknessii George K. Helmkamp, E. A. Helmkamp 2012-6-19 19235 Placer Northern Sierra Nevada Mountains: Foresthill Road, 6.9 miles east of its junction with Devil's Thumb Road. 1972 Comment
  SD257274  Trifolium incarnatum George K. Helmkamp, Amy Barnes 2014-3-21 22648 Placer Sacramento Valley: Sheridan, Riosa Road at the west side of its junction with old CA-65 (Sherican 7.5'Q) 32 Comment
  SEINET11261795  Linum lewisii var. alpicola George K. Helmkamp, E. A. Helmkamp 2011-7-26 17891 Placer Northern Sierra Nevada Mountains: Bowman Lake Road, 0.9 miles N of its junction with CA Hwy 20, 0.85 miles NE (23 degrees) of Emigrant Gap and N of I-80.; 0 1434 Comment
  SEINET12825132  Bignonia capreolata George K. Helmkamp, E. A. Helmkamp 2009-1 14631 Placer Mosquito Ridge Road, 13.6 miles east of its junction with Forest Hill Road in Foresthill. Sierra Nevada Mountains Foothills. 1796 Comment
  SEINET13276770 Image available Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 2009-1 14557 Placer Sierra Nevada Mountains Foothills: Forest Hill Road 0.8 mile east of its junction with CA-49 and the North and Middle Forks of the American River (Auburn 7.5' Q.) 277 Comment
  SEINET2441404  Gilia leptalea subsp. bicolor George K. Helmkamp, E. A. Helmkamp 2009-7-16 15224 Placer Sierra Nevada Mountains: Forest Hill Road, 26.1 miles northeast of the city of Foresthill, c. 3/4 mi. NW of Sailor Flat (Duncan Peak 7.5' Q.). 2020 Comment
  SEINET3245950  Petrorhagia dubia G. K. Helmkamp, E. A. Helmkamp 2010-1 15934 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River (Pilot Hill 7.5') 157 Comment
  SEINET3246086  Eriogonum nudum var. deductum G. K. Helmkamp, E. A. Helmkamp 2007-1 12636 Placer Northern Sierra Nevada Mountains: Southeast end of Cisco Grove; along local road just before it passes under Interstate-80. 1743 Comment
  SEINET3440031 Image available Vulpia myuros George K. Helmkamp, E. A. Helmkamp 2012-5-5 18928 Placer Northern Sierra Nevada Mountains Foothills: Todd Valley Road, 1.2 mi south of its junction with Foresthill Road 778 Comment
  SEINET4560768  Salix jepsonii George K. Helmkamp, E. A. Helmkamp 2010-1 16671 Placer Northern Sierra Nevada Mountains: Forest Hill Road, 1.6 miles west of the junction with Soda Springs Road at Robinson Flat. 2040 Comment
  SEINET4560809  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2010-1 17027 Placer Northern Sierra Nevada Mountains Foothills: along Forest Route 24 at Parker Flat and Beside Forbes Creek, 1.9 miles east (airline) of the Sugar Pine reservior dam 1180 Comment
  SEINET4691668  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp 2010-1 16784 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
  SEINET4691679  Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2011-1 17139 Placer Sacramento Valley: east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road. 98 Comment
  SEINET4691687  Apocynum androsaemifolium George K. Helmkamp, E. A. Helmkamp 2010-1 16785 Placer Northern Sierra Nevada Mountains: American Hill road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing. 1552 Comment
  SEINET4691719  Vicia americana subsp. americana George K. Helmkamp, E. A. Helmkamp 2010-1 16637 Placer Northern Sierra Nevada Mountains Foothills: Forest Route 10 (Sugar Pine R.), 0.8 mile north of its junction with Forest Hill Road, 8,2 miles NE (34 degrees) of Foresthill. 1311 Comment
  UC2044602  Collinsia tinctoria George K. Helmkamp with Elizabeth Helmkamp 2013-6-11 20823 Placer Northern Sierra Nevada Mountains Foothills junction of Yankee Jim's Road and Shirttail Canyon Road, NW of Foresthill. (Colfax 7.5' Q.) Comment
  UCD105784  Epilobium ciliatum subsp. ciliatum G. K. Helmkamp; E. A. Helmkamp 2007-9-14 12956 Placer Northern Sierra Nevada Mountains. Along Mosquito Ridge Road, 0.4 mile east of Foresthill. 942 Comment
  UCD107633  Marah fabacea G. K. Helmkamp; E. A. Helmkamp 2006-2-24 10067 Placer Sacramento Valley; edge of Sierra Nevada Foothills: Junction of Clark Tunnel Road and CA Highway 193, E of Lincoln. 113 Comment
  UCD108251  Lupinus lepidus var. confertus G. K. Helmkamp; E. A. Helmkamp 2005-9-30 9964 Placer Northern High Sierra Mountains: ca. 3.5 mi NW of Lake Tahoe; Along the Truckee River and CA Highway 89, 0.1 mi N of Alpine Meadows Road. 1902 Comment
  UCD117335  Cornus sericea subsp. sericea G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12632 Placer Northern Sierra Nevada Mountains: Southeast end of Cisco Grove; along local road just before it passes under Interstate-80. 1744 Comment
  UCD123161  Cordylanthus tenuis subsp. tenuis G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12629 Placer Northern Sierra Nevada Mountains: Southeast end of Cisco Grove; along local road just before it passes under Interstate-80. 1744 Comment
  UCD125220  Monardella odoratissima subsp. pallida G. K. Helmkamp; E. A. Helmkamp 2007-8-1 12642 Placer Northern Sierra Nevada Mountains: Donner Pass Road between Donner and Norden, about 0.2 mile east of the Nevada County border. 2151 Comment
  UCD126172  Calystegia occidentalis subsp. occidentalis G. K. Helmkamp; E. A. Helmkamp 2006-6-14 10706 Placer Northern Sierra Nevada Mountains: 0.2 mile N of Forest Hill Road on unnamed road to Lake Clementine (general area NE of Auburn on Forest Hill Divide). 487 Comment
  UCD130412  Chondrilla juncea G. K. Helmkamp; E. A. Helmkamp 2007-9-14 12965 Placer Northern Sierra Nevada Mountains. Along Mosquito Ridge Road 15 miles east of Foresthill. 832 Comment
  UCD135118  Pseudotsuga menziesii var. menziesii G. K. Helmkamp; E. A. Helmkamp 2006-8-11 11213 Placer Northern Sierra Nevada Mtns foothills; along Forest Hill Road, 8.7 miles northeast of Forest Hill. 1311 Comment
  UCR170645  Lepidium virginicum var. virginicum George K. Helmkamp, E. A. Helmkamp 2005-9-30 9960 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR171031  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2006-2-24 10069 Placer Northern Sacramento Valley, Wise Road just east of its junction with Calif. Highway 65; c. 1 mi SE of Ewing 47 Comment
  UCR171033  Marah fabacea George K. Helmkamp, E. A. Helmkamp 2006-2-24 10067 Placer Sacramento Valley; edge of Sierra Nevada Foothills, Junction of Clark Tunnel Road and Calif. Highway 193, east of Lincoln 113 Comment
  UCR171341  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2005-10-1 9971 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
  UCR171343  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2005-10-1 9988 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
  UCR171348  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2005-10-1 9983 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
  UCR171349  Abies George K. Helmkamp, E. A. Helmkamp 2005-10-1 9995 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
  UCR173262  Gilia capitata subsp. mediomontana George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10425 Placer Northern Sierra Nevada foothills, 2.1 mi south of Auburn along Calif. Hwy 49 293 Comment
  UCR173696  Vicia villosa subsp. varia George K. Helmkamp, Elizabeth Helmkamp 2006-4-6 10132 Placer Northern Sierra Nevada Foothills, NE edge of Sacramento metropolitan area; Sierra College Road and King Ranch Road SSE of Rocklin 122 Comment
  UCR173791  Penstemon azureus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-14 10712 Placer Northern Sierra Nevada Mountains foothills, 0.2 mile north of Forest Hill Road on Lake Clementine Rd., area northeast of Auburn on Forest Hill Divide 488 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
  UCR176279  Fritillaria George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10448 Placer Northern Sierra Nevada Foothills, c. 4 air mi. NE of Auburn, along an unnamed road to Lake Clementine, 1.2 mi. N of Forest Hill Road 422 Comment
  UCR188845  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2007-3-25 11712 Placer Foothills, Northern Sierra Nevada Mountains, Forest Hill Road at the junction with the unnamed road to Lake Clementine 457 Comment
  UCR188847  Quercus wislizeni var. wislizeni George K. Helmkamp, E. A. Helmkamp 2007-3-25 11710 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
  UCR190920  Iris hartwegii subsp. hartwegii George K. Helmkamp, E. A. Helmkamp 2007-5-23 12069 Placer Northern Sierra Nevada Mountains, Sugar Pine road, 0.2 mile northwest of Forest Hill Road 1360 Comment
  UCR191065  Senecio aronicoides George K. Helmkamp, E. A. Helmkamp 2007-5-23 12065 Placer Northern Sierra Nevada Mountains, Humbug Canyon Road, 0.2 mile northwest of Forest Hill Road, generally southwest of Westville 1576 Comment
  UCR191074  Mimulus jepsonii George K. Helmkamp, E. A. Helmkamp 2007-5-23 12057 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 11.1 miles northeast of Foresthill 1463 Comment
  UCR191091  Smilacina racemosa George K. Helmkamp, E. A. Helmkamp 2007-6-12 12314 Placer Northern Sierra Nevada Mountains, Lake Spaulding Road just north of its junction with Hwy CA-20 1610 Comment
  UCR191110  Potentilla glandulosa subsp. ashlandica George K. Helmkamp, E. A. Helmkamp 2007-6-12 12317 Placer Northern Sierra Nevada Mountains, Lake Spaulding Road just north of its junction with Hwy CA-20 1610 Comment
  UCR193331  Trientalis latifolia George K. Helmkamp, E. A. Helmkamp 2007-5-30 12189 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
  UCR193333  Nemophila parviflora var. austiniae George K. Helmkamp, E. A. Helmkamp 2007-5-30 12192 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.5 miles east of its junction with Forest Hill Road in Foresthill, between Mosquito Ridge Lookout and North Fork of Middle Fork American River 800 Comment
  UCR193338  Clarkia rhomboidea George K. Helmkamp, E. A. Helmkamp 2007-5-30 12176 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 10.7 miles east of its junction with Forest Hill Road in Foresthill 588 Comment
  UCR193339  Keckiella breviflora subsp. breviflora George K. Helmkamp, E. A. Helmkamp 2007-5-30 12177 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 10.7 miles east of its junction with Forest Hill Road in Foresthill 588 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
  UCR201520  Grindelia squarrosa var. serrulata George K. Helmkamp, E. A. Helmkamp 2008-8-20 14015 Placer Northern Sierra Nevada Mountains, Rainbow exit south from US-80 and east of Big Bend, adjacent to the South Yuba River 1811 Comment
  UCR206756  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
  UCR207872  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-4-22 14570 Placer Sierra Nevada Mountains Foothills, Rucky Chuck Rd. (dirt) 1.2 miles southeast of Forest Hill Road 448 Comment
  UCR207890  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2009-4-22 14573 Placer Sierra Nevada Mountains Foothills, Rucky Chuck Rd. (dirt) 1.2 miles southeast of Forest Hill Road 448 Comment
  UCR208263  Lupinus albifrons var. collinus George K. Helmkamp, E. A. Helmkamp 2009-5-7 14646 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 8.9 miles east of its junction with Forest Hill Road in Foresthill 476 Comment
  UCR208268  Vicia sativa subsp. sativa George K. Helmkamp, E. A. Helmkamp 2009-5-7 14649 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 8.9 miles east of its junction with Forest Hill Road in Foresthill 476 Comment
  UCR208274  Castilleja pruinosa George K. Helmkamp, E. A. Helmkamp 2009-5-7 14641 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.6 miles east of its junction with Forest Hill Road in Foresthill 771 Comment
  UCR209734  Ipomopsis aggregata subsp. formosissima George K. Helmkamp, E. A. Helmkamp 2009-8-12 15436 Placer Sierra Nevada Mountains, Forest Hill Road, 0.8 mile west of Robinson Flat, c. 27 miles NE of the city of Foresthill 2034 Comment
  UCR209752  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2009-8-12 15443 Placer Sierra Nevada Mountains, Forest Hill Road, 0.8 mile west of Robinson Flat, c. 27 miles NE of the city of Foresthill 2034 Comment
  UCR216028  Torilis arvensis George K. Helmkamp, Amy Barnes 2009-7-12 15189 Placer Sierra Nevada Mountains Foothills, along Todd Valley Road, 0.1 mile south of its junction with Foresthill Road, c. 13 air miles NE of Auburn 854 Comment
  UCR218131  Agrostis idahoensis George K. Helmkamp, E. A. Helmkamp 2010-6-26 16380 Placer Sierra Nevada Mountains Foothills, junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  UCR218133  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2010-6-26 16383 Placer Sierra Nevada Mountains Foothills, junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  UCR218222  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2010-6-26 16387 Placer Sierra Nevada Mountains Foothills, junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  UCR218448  Keckiella breviflora subsp. breviflora George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16421 Placer Sierra Nevada Mountains Foothills, Yankee Jims Road, 3.2 miles southeast of its junction with Canyon Way, 4.4 air mi. SE (156 deg. ) of Colfax 412 Comment
  UCR218449  Clarkia unguiculata George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16420 Placer Sierra Nevada Mountains Foothills, Yankee Jims Road, 3.2 miles southeast of its junction with Canyon Way, 4.4 air mi. SE (156 deg. ) of Colfax 412 Comment
  UCR222541  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2010-4-17 15886 Placer Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 4.2 miles southwest of its junction with CA-49 near Pilot Hill 360 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
  UCR222549  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2010-4-17 15894 Placer Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, about 0.2 mile northeast of the entrance to the Folsom Lake recreational area 305 Comment
  UCR229555  Sambucus mexicana George K. Helmkamp, E. A. Helmkamp 2011-7-26 17902 Placer Northern Sierra Nevada Mountains, Bowman Lake Road, 0.9 mile north of its junction with CA Hwy 20, 0.85 mi. NE (23 deg. ) of Emigrant Gap and N of I-80 1434 Comment
  UCR232644  Pseudotsuga menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2011-9-30 18346 Placer Northern Sierra Nevada Mountains Foothills, Diggins Hill Road at the south side of the Bear River Reservoir, 1.1 miles north of Dutch Flat 852 Comment
  UCR233400  Mimulus breweri George K. Helmkamp, E. A. Helmkamp 2011-8-26 18186 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat 2050 Comment
  UCR234216  Triphysaria versicolor subsp. faucibarbata George K. Helmkamp, E. A. Helmkamp 2011-4-10 17174 Placer Sacramento Valley, 2 miles east of Hwy 65 in Lincoln, along CA-193 just west of the junction with Stardust Lane 76 Comment
  UCR235376  Calochortus monophyllus George K. Helmkamp, E. A. Helmkamp 2012-5-11 18958 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
  UCR235392  Lathyrus nevadensis subsp. nevadensis George K. Helmkamp, E. A. Helmkamp 2012-5-11 18954 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.7 miles north of its junction with Forest Hill Road 1041 Comment
  UCR235502  Euphorbia crenulata George K. Helmkamp, E. A. Helmkamp 2012-5-11 18943 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.2 miles north of its junction with Forest Hill Road 1104 Comment
  UCR235614  Iris tenuissima subsp. purdyiformis George K. Helmkamp, E. A. Helmkamp 2012-5-5 18913 Placer Northern Sierra Nevada Mountains Foothills, Lake Clementine Road, 1.2 miles west of its junction with Foresthill Road, 0.3 air mi. SE (123 deg. ) of Clementine Dam on the American River 396 Comment
  UCR238584  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2012-3-31 18667 Placer Northern Sierra Nevada Mountains Foothills, Old Foresthill Road, 0.7 mile northeast of its junction with CA-49 and the American River Crossing 258 Comment
  UCR240725  Navarretia George K. Helmkamp, E. A. Helmkamp 2012-6-19 19231 Placer Northern Sierra Nevada Mountains, Foresthill Road, 1.7 miles east of its junction with Devil's Thumb Road 1671 Comment
  UCR240954  Pseudognaphalium canescens subsp. beneolens George K. Helmkamp, E. A. Helmkamp 2012-9-25 19906 Placer Northern Sierra Nevada Mountains, Blue Canyon Road, 1.1 miles south of its intersection with I-80, c. 1/2 mi. south of Blue Canyon-Nyack Airport 1473 Comment
  UCR241326  Monardella odoratissima subsp. pallida George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19822 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
  UCR241343  Eucephalus breweri George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19826 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 0.5 mile north of Robinson Flat Campground, c. 26 miles NE of Foresthill, Tahoe National Forest 2043 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
  UCR241743  Achnatherum occidentale subsp. californicum George K. Helmkamp, E. A. Helmkamp 2012-6-19 19220 Placer Northern Sierra Nevada Mountains Foothills, Foresthill Road, 2.6 miles east of its junction with Mosquito Ridge Road in Forest Hill 1052 Comment
  UCR242330  Ceanothus cordulatus George K. Helmkamp, E. A. Helmkamp 2010-7-28 16660 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 22 miles northeast of the city of Foresthill 2041 Comment
  UCR246824  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2010-7-28 16649 Placer Northern Sierra Nevada Mountains, Forest Hill Road at Hidden Treasure Road, 10.4 miles northeast of the city of Foresthill 1384 Comment
  UCR249534  Trifolium tomentosum George K. Helmkamp, Amy Barnes 2013-3-28 20299 Placer Eastern Sacramento Valley, northwest side of junction of Riosa Road and Andressen Road, northeast of Sheridan 36 Comment
  UCR250045  Cynosurus echinatus George K. Helmkamp, Mary Alice Barnes 2013-5-3 20478 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
  UCR250057A  Layia pentachaeta subsp. pentachaeta George K. Helmkamp, Mary Alice Barnes 2013-4-18 20337 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
  UCR250062  Nemophila pulchella var. gracilis George K. Helmkamp, Mary Alice Barnes 2013-4-18 20340 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
  UCR250146  Galium aparine George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20831 Placer Northern Sierra Nevada Mountains Foothills, junction of Yankee Jim's Road and Shirttail Canyon Road, NW of Foresthill 463 Comment
  UCR250164  Eriophyllum lanatum var. achilleoides George K. Helmkamp, Mary Alice Barnes 2013-5-3 20479 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 4.7 miles south of Forest Hill Road, 1.8 mi. east (92 deg. ) of Foresthill 829 Comment
  UCR250171  Mimulus aurantiacus var. grandiflorus George K. Helmkamp, Mary Alice Barnes 2013-5-3 20477 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
  UCR250177  Lupinus albicaulis George K. Helmkamp, Mary Alice Barnes 2013-5-3 20460 Placer Foothills, northern Sierra Nevada Mountains, SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road 974 Comment
  UCR250178  Sanicula crassicaulis George K. Helmkamp, Mary Alice Barnes 2013-5-3 20469 Placer Foothills, northern Sierra Nevada Mountains, SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road 974 Comment
  UCR250179  Calamagrostis breweri George K. Helmkamp, Mary Alice Barnes 2013-5-3 20468 Placer Foothills, northern Sierra Nevada Mountains, SW edge of Foresthill, Mosquito Ridge Road, 0.2 mile south of Forest Hill Road 974 Comment
  UCR250350  Calochortus albus George K. Helmkamp, Mary Alice Barnes 2013-4-18 20358 Placer Northern Sierra Nevada Mtns Foothills, Yankee Jim Road, 2.4 miles east of its junction with Canyon Way, 2.5 mi. ENE (78 deg. ) of Weimar 512 Comment
  UCR250651  Vicia sativa subsp. nigra George K. Helmkamp, Mary Alice Barnes 2013-4-18 20373 Placer Northern Sierra Nevada Mtns Foothills, Iowa Hill Road, 1.8 miles west of the bridge over North Fork American River, 0.6 mi. (airline) east of I-80 at Colfax 544 Comment
  UCR253124  Castilleja foliolosa George K. Helmkamp, Amy Barnes 2014-4-23 22822 Placer Sierra Nevada Mountains Foothills, Foresthill Road, 0.6 mile northeast of Grizzly Bear House, c. 2 miles NE of Lake Clementine Rd, 0.57 mi. SW of Upper Lake Clementine Rd 526 Comment
  UCR257151  Iris hartwegii subsp. hartwegii George K. Helmkamp, Amy Barnes 2014-4-23 22789 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
  UCR257623  Aster occidentalis var. occidentalis George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19529 Placer Northern Sierra Nevada Mountains, Sugar Bowl Road, 0.4 mile south of its junction with Donner Pass Road, just west of Lake Mary 2136 Comment
  UCR257628  Sidalcea malviflora subsp. asprella George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19536 Placer Northern Sierra Nevada Mountains, Sugar Bowl Road, 0.4 mile south of its junction with Donner Pass Road, just west of Lake Mary 2136 Comment
  UCR257629  Epilobium pallidum George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19535 Placer Northern Sierra Nevada Mountains, Sugar Bowl Road, 0.4 mile south of its junction with Donner Pass Road, just west of Lake Mary 2136 Comment
  UCR257640  Trichostema lanceolatum George K. Helmkamp, Elizabeth Helmkamp 2012-10-13 20016 Placer Sacramento Valley, Granite Bay, Folsom Lake; Park Road 1.8 miles north of the east end of Douglas Blvd. 146 Comment
  UCR257720  Epilobium ciliatum subsp. glandulosum George K. Helmkamp, Elizabeth Helmkamp 2012-10-16 20037 Placer Sierra Nevada Mountains Foothills, city of North Auburn, corner of Locksley Lane and CA-49 384 Comment
  UCR258398  Bromus hordeaceus George K. Helmkamp, Amy Barnes 2014-3-21 22632 Placer Sacramento Valley, Riosa Road at the east side of its junction with CA-65, just west of Sheridan 33 Comment
  UCR262445  Raphanus sativus George K. Helmkamp, E. A. Helmkamp 2011-12-9 18503 Placer Sacramento Valley, Sunset Blvd. West, 5.8 miles west of its junction with Fiddyment Road 29 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
  SEINET7249049  Fabaceae George K. Helmkamp, Mary Alice Barnes 2013-1 Placer Comment
  UCR123905  Lathyrus latifolius George K. Helmkamp, E. A. Helmkamp 2001-7-6 6856 Plumas Sierra Nevada Mountains, Calif. Hwy 89, ESE of Lake Almanor at Crescent Mills 976 Comment
  CLARK-A1045-112  Salvia apiana George K. Helmkamp 1977-3-20 Riverside Pinyon Pines area above west edge of Deep canyon; Palm Desert 15'Q Comment
  CLARK-A1045-117  Astragalus palmeri George K. Helmkamp 1978-4-1 Riverside Pinyon Flat Pinyon Pine[s] area, [flats] above Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-120  Antirrhinum filipes George K. Helmkamp 1977-3-20 Riverside Deep Canyon dry wash of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-129  Calandrinia ambigua George K. Helmkamp 1977-3-20 Riverside Deep Canyon dry wash of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-133  Arabis perennans George K. Helmkamp 1977-5-20 Riverside Deep Canyon mouth of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-142  Pholistoma membranaceum George K. Helmkamp 1978-4-1 Riverside Deep Canyon west edge of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-147  Cryptantha intermedia George K. Helmkamp 1978-4-1 Riverside Deep Canyon Palm Desert 15'Q Comment
  CLARK-A1045-178  Downingia cuspidata George K. Helmkamp 1979-5-5 Riverside Santa Ana Mountains vernal pool; Wildomar 7.5'Q Comment
  CLARK-A1045-190  Plagiobothrys tenellus George K. Helmkamp 1979-5-5 Riverside Santa Ana Mountains Southern Oak Woodland; Wildomar 7.5'Q Comment
  CLARK-A1045-235  Pectocarya platycarpa George K. Helmkamp 1978-4-1 Riverside Whitewater junction of Interstate highway 10 and Verbenia Avenue; Whitewater 7.5'Q Comment
  CLARK-A1045-288  Lasthenia coronaria George K. Helmkamp 1979-5-16 Riverside San Jacinto Mountains along San Jacinto Ridge Road at Oak Spring turnoff; chaparral; ; Lake Fulmor 7.5'Q 914 Comment
  CLARK-A1045-335  Mimulus diffusus George K. Helmkamp 1978-5-2 Riverside Bautista Canyon a burned area beside Bautista Road; Hemet 15'Q Comment
  CLARK-A1045-673  Linanthus ciliatus George K. Helmkamp 1977-5-21 Riverside San Jacinto Mountains forest west of Pine Cove; Palm Springs 15'Q Comment
  CLARK-A1045-72  Arenaria douglasii George K. Helmkamp 1978-5-20 Riverside San Jacinto Mountains dry slope between meadow and sagebrush, just northwest of Kensworthy Forest Station; Idyllwild 15'Q Comment
  CLARK-A1045-79  Astragalus douglasii George K. Helmkamp 1977-4-30 Riverside San Jacinto Mountains Lake Fulmor 7.5'Q Comment
  CLARK-A1045-870  Mentzelia veatchiana George K. Helmkamp 1978-6-1 #4 Riverside Santa Ana Mountains Wildomar 7.5'Q Comment
  CLARK-A1045-90  Lathyrus laetiflorus George K. Helmkamp 1978-4-27 Riverside San Jacinto Mountains 3 miles up [east northeast] from Oak Spring; Lake Fulmor 7.5'Q Comment
  OBI37412  Stephanomeria pauciflora G. Helmkamp 1985-5-9 454 Riverside 1/2 mi from the Coachella Valley 503 Comment
  RSA614890  Camissonia pallida subsp. hallii George K. Helmkamp 1998-4-3 3077 Riverside Snow Creek area N of Mt. San Jacinto; at edge of stream S of Snow Creek Rd at a point 1.4 mi. S of CA Hwy 111. 396 Comment
  RSA712691  Cryptantha decipiens George K. Helmkamp 1984-5-2 D- 27 Riverside Big Morongo Canyon, 3 - 3.5 miles below the caretakers s house at the Big Morongo Preserve. 549 Comment
  SBBG119609  Cryptantha barbigera G. K. Helmkamp 1984-5-2 D- 26 Riverside Big Morongo Cyn, 3-3.5 mi below the caretaker's house at the Big Morongo Preserve 550 Comment
  SD129529  Cordylanthus rigidus subsp. setiger G. K. Helmkamp 1989-10-7 Riverside Edge of moist farmland at the N edge of the fish hatchery in Whitewater Canyon, N of I-10 700 Comment
  SD143778  Eriogonum thomasii G. K. Helmkamp, E. A. Helmkamp 1998-2-18 2740 Riverside Chuckawalla Mtns: Graham Pass Rd, 10.6 mi. SSW of Chuckawalla Valley Rd. 487 Comment
  SD185241  Phacelia distans G. K. Helmkamp 1998-4-4 3129 Riverside Junction of CA 62 and CA 177. 456 Comment
  SD224944  Euphorbia setiloba G. K. Helmkamp 1998-4-4 3161 Riverside Colorado Desert: 7.1 mi N of Hwy I-10 on Eagle Mrn Rd, to the vicinity of the pumping station. 305 Comment
  SD225059  Gilia stellata G. K. Helmkamp 1998-4-4 3130 Riverside Southern Mojave Desert: junction of CA hwy 62 (Twentynine Palms hwy) & CA hwy 177 (Desert Center - Rice Rd). 474 Comment
  SD225075  Eriogonum thomasii G. K. Helmkamp 1998-2-5 2674 Riverside Little San Bernardino Mtns. 3.2 mi N of jct of Thousand Palms Canyon Rd & Dillon Rd. 456 Comment
  SEINET238550 Image available Arctostaphylos pringlei subsp. drupacea George K. Helmkamp 1998-6-27 4121 Riverside Santa Rosa Mtns.: 5.8 mi SE of Hwy 74 along Santa Rosa Mtn Rd. below Mountain Home Spring. 1799 Comment
  SEINET238554 Image available Ribes cereum var. cereum George K. Helmkamp 1998-6-27 4127 Riverside Santa Rosa Mtns.: 9 mi SE of Hwy 74 along Santa Rosa Mtn Rd. in vicinity of Santa Rosa Spring. 2232 Comment
  SEINET238556 Image available Erythranthe moschata George K. Helmkamp 1998-1 4129 Riverside Santa Rosa Mtns.: 9 mi SE of Hwy 74 along Santa Rosa Mtn Rd. in vicinity of Santa Rosa Spring. 2232 Comment
  SEINET239051 Image available Bromus grandis George K. Helmkamp 1998-6-27 4118 Riverside Sana Rosa Mountains. 5.8 miles southeast of highway 74 along Santa Rosa Mountain road (=Santa Rosa Truck Trail = F.S. Rd. 7S02), below Mountain Home Spring 1799 Comment
  SEINET3071531 Image available Fagonia laevis George K. Helmkamp, E. A. Helmkamp 1998-1 2657 Riverside Sonoran (Colorado) Desert; Indio Hills, 3 mi. east of Thousand Palms & 1.1 mi. N on Amity Rd. 101 Comment
  SEINET3093303 Image available Camissonia claviformis subsp. claviformis George K. Helmkamp, E. A. Helmkamp 1998-2-5 2655 Riverside Indio Hills, 3 mi. E of Thousand Palms & 1.1 mi. N on Amity Rd. 101 Comment
  UCD107064  Eremothera boothii subsp. desertorum G. K. Helmkamp; E. A. Helmkamp 1998-2-18 2743 Riverside Chuckwalla Mountains. Graham Pass Road, 10.6 miles SSW of Chuckwalla Valley Road. 487 Comment
  UCR100572  Euphorbia nutans George K. Helmkamp 1997-11-1 2514 Riverside Sonoran (Colorado) Desert, Bermuda Dunes, 41st St and Sparky (just east of Washington and south of I-10) 30 Comment
  UCR100785  Lycium andersonii George K. Helmkamp, E. A. Helmkamp 1998-2-18 2693 Riverside Sonoran (Colorado) Desert, Midland Road., 3.8 mi. SE of Midland, Little Maria Mtns. 198 Comment
  UCR101786  Lasthenia gracilis George K. Helmkamp, E. A. Helmkamp 1997-3-5 1333 Riverside San Bernardino Mtns./San Gorgonio Pass, Cabazon, 0.5 mi north of I-10 on Millard Pass Rd. 564 Comment
  UCR101800  Piptatherum miliaceum George K. Helmkamp, E. A. Helmkamp 1998-8-17 4445 Riverside Santa Ana Mtns., San Juan Canyon along the Ortega Hwy (Calif. Hwy 74) beside the Orange Co. line 503 Comment
  UCR101806  Erigeron foliosus George K. Helmkamp, E. A. Helmkamp 1998-8-17 4438 Riverside Santa Ana Mtns., San Juan Canyon along the Ortega Hwy (Calif. Hwy 74) beside the Orange Co. line 503 Comment
  UCR102934  Castilleja foliolosa George K. Helmkamp 1998-4-3 3089 Riverside Coachella Valley, Mission Creek, the Wildlands Conservancy Preserve, 1.1 mi. NW of the ranch house beside a gauging staion along the creek 747 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
  UCR103548  Camissonia claviformis subsp. aurantiaca George K. Helmkamp, E. A. Helmkamp 1998-1-17 2531 Riverside Coachella Valley, Bob Hope Drive, 0.9 mi south of Hwy I-10 43 Comment
  UCR103549  Gilia latifolia George K. Helmkamp, E. A. Helmkamp 1998-1-17 2533 Riverside Sonoran (Colorado) Desert, Box Canyon, NE of Mecca and 3.5 mi south of Shavers Well. 244 Comment
  UCR103570  Abronia villosa George K. Helmkamp, E. A. Helmkamp 1998-2-18 2712 Riverside Sonoran (Colorado) Desert, Midland Road., 3.8 mi. SE of Midland, Little Maria Mtns. 198 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
  UCR103592  Phacelia crenulata George K. Helmkamp, E. A. Helmkamp 1998-2-18 2721 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR104034  Phacelia distans George K. Helmkamp 1998-2-5 2638 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Palm Springs, 1.1 mi. west of Calif. Hwy 111 on Tramway Rd. 335 Comment
  UCR104818  Chaenactis carphoclinia George K. Helmkamp, E. A. Helmkamp 1998-2-18 2732 Riverside Sonoran (Colorado) Desert, Chuckwalla Mtns, 10.6 miles SSW of Chuckwalla Valley Rd. on Graham Pass Rd. 488 Comment
  UCR104819  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 1998-1-17 2556 Riverside Coachella Valley, alongside Hwy 195 south of Mecca and at the S edge of the Torres Martinez Indian Reservation -30 Comment
  UCR104824  Hyptis emoryi George K. Helmkamp 1998-4-4 3178 Riverside Sonoran (Colorado) Desert, 2.3 mi. north of Hwy I-10 on Eagle Mtn Rd. 274 Comment
  UCR104874  Ambrosia dumosa George K. Helmkamp 1998-4-4 3148 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR107261  Cyperus eragrostis George K. Helmkamp, E. A. Helmkamp 1998-8-17 4446 Riverside Santa Ana Mtns., San Juan Canyon along the Ortega Hwy (Calif. Hwy 74) beside the Orange Co. line 503 Comment
  UCR110961  Lupinus excubitus George K. Helmkamp 1998-6-27 4089 Riverside Santa Rosa Mtns., 3.3 miles south of Hwy 74 along Santa Rosa Mtn Rd. (= Santa Rosa Truck Trail, FS Rd. 7S02), in vicinity of an unnamed spring 1585 Comment
  UCR110963  Penstemon centranthifolius George K. Helmkamp 1998-6-27 4091 Riverside Santa Rosa Mtns., 3.3 miles south of Hwy 74 along Santa Rosa Mtn Rd. (= Santa Rosa Truck Trail, FS Rd. 7S02), in vicinity of an unnamed spring 1585 Comment
  UCR110968  Castilleja minor George K. Helmkamp 1998-6-27 4099 Riverside Santa Rosa Mtns., 3.3 miles south of Hwy 74 along Santa Rosa Mtn Rd. (= Santa Rosa Truck Trail, FS Rd. 7S02), in vicinity of an unnamed spring 1585 Comment
  UCR110969  Penstemon clevelandii George K. Helmkamp 1998-6-27 4105 Riverside Santa Rosa Mtns., 3.3 miles south of Hwy 74 along Santa Rosa Mtn Rd. (= Santa Rosa Truck Trail, FS Rd. 7S02), in vicinity of an unnamed spring 1585 Comment
  UCR110974  Hulsea vestita subsp. callicarpha George K. Helmkamp 1998-6-27 4114 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
  UCR110995  Monardella nana subsp. arida George K. Helmkamp 1998-6-27 4111 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
  UCR110997  Vicia americana var. americana George K. Helmkamp 1998-6-27 4115 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
  UCR122542  Pentachaeta aurea George K. Helmkamp, E. A. Helmkamp 2001-5-20 6672 Riverside San Jacinto Mountains., Apple Canyon Rd, 1.5 mi NE of CA-74 1463 Comment
  UCR130706  Penstemon centranthifolius George K. Helmkamp, E. A. Helmkamp 1998-6-27 4070 Riverside San Jacinto Mtns., Garner Valley, along Hwy 74 at Morris Ranch Rd. 1372 Comment
  UCR14021A  Gutierrezia sarothrae George K. Helmkamp 1973-10-3 s.n. Riverside San Jacinto Mtns, On Palms to Pines Hwy at junction to Idyllwild [Mountain Center] Comment
  UCR15606  Filago gallica George K. Helmkamp 1978-6-1 s.n. Riverside Santa Ana Mountains, Santa Rosa Plateau, vernal pool 7 mi [west] of Murrieta near the origin of DeLuz Creek 671 Comment
  UCR24807  Carex fracta George K. Helmkamp 1981-7-5 s.n. Riverside San Jacinto Mountains, spring alongside the Black Mountain Road, 6 mi from the Banning to Idyllwild Hwy (243) Comment
  UCR29258  Mentzelia involucrata George K. Helmkamp 1983-3-24 383- 01 Riverside Sonoran (Colorado) Desert, N side of Chuckwalla Mtns., Chuckwalla Springs Road, 5 mi. west of Graham Pass Road. 366 Comment
  UCR30072  Cryptantha barbigera George K. Helmkamp 1983-4-5 483 16 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR30077  Peucephyllum schottii George K. Helmkamp 1983-4-5 483- 13 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR30084  Gilia latifolia George K. Helmkamp 1983-4-5 483- 41 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR58452  Heterotheca sessiliflora subsp. fastigiata George K. Helmkamp 1989-10-7 s.n. Riverside Peninsular Range; San Jacinto Mtns, roadside beside Hwy 243 near Lawlor Lodge, c. 2 mi north of Pine Cove 1600 Comment
  UCR59698  Eriochloa acuminata George K. Helmkamp 1989-9-16 s.n. Riverside Sonoran (Colorado) Desert, Colorado River Valley; hayfield on W side of state Hwy 78, 0.7 mi north of Palo Verde 71 Comment
  UCR85750  Hilaria rigida George K. Helmkamp 1994-4-26 88- 01 Riverside Western Colorado Desert, Indio Hills; north of the landfill on Edom Hill 213 Comment
  UCR89832  Brassica tournefortii George K. Helmkamp 1994-3-10 42 6 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
  UCR89872  Croton californicus George K. Helmkamp 1994-3-8 41 13 Riverside Western Colorado Desert, Indio Hills, junction of Palm Dr. & Varner Rd, below Edom Hill 200 Comment
  UCR91947  Ziziphus obtusifolia var. canescens George K. Helmkamp 1996-3-11 1003 Riverside Chuckwalla Mtns, Corn Springs 479 Comment
  VVC944  Cryptantha maritima G. K. Helmkamp 1998-2-18 2716 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi S of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  CAS-BOT-BC523890  Grindelia hirsutula George K. Helmkamp; E. A. Helmkamp 2012-10-1 19946 Sacramento Eastern Sacramento Valley: SE end of El Dorado Hills; Windfield Way just S of its jct with White Rock Rd 167 Comment
  RSA749726  Lagophylla glandulosa George K. Helmkamp, E. A. Helmkamp 2008-10-2 14197 Sacramento Sacramento Valley: Latrobe Road, 7.4 miles west of Latrobe. 67 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
  SEINET3282802 Image available Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2008-10-30 14284 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
  SEINET9262008  Taeniatherum caput-medusae George K. Helmkamp, Amy Barnes 2014-1 22701 Sacramento Sacramento Valley: along CA-104/Twin Cities Rd., 0.7 mile west of the Amador County line (Carbondale 7.5 Q 62 Comment
  UCD131762  Erigeron canadensis G. K. Helmkamp; E. A. Helmkamp 2007-9-9 12917 Sacramento Sacramento Valley: Along Hwy. CA-16, 0.8 mile west of the Amador County line. 85 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
  UCD150869  Lomatium caruifolium var. caruifolium G. K. Helmkamp; E. A. Helmkamp 2007-4-5 11738 Sacramento Eastern Sacramento Valley; along Hwy CA-104, 5.6 miles west of Ione. 66 Comment
  UCD60320  Bromus hordeaceus G. 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 W of the El Dorado Co. line. 109 Comment
  UCR184823  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2007-3-14 11629 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
  UCR184828  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2007-3-14 11627 Sacramento Sacramento Valley; edge of Sierra Nevada foothills, Latrobe Rd at Michigan Bar Rd, about 3.5 mi west of Latrobe and 0.3 mi west of the El Dorado County line 146 Comment
  UCR184829  Stellaria media George K. Helmkamp, E. A. Helmkamp 2007-3-14 11626 Sacramento Sacramento Valley; edge of Sierra Nevada foothills, Latrobe Rd at Michigan Bar Rd, about 3.5 mi west of Latrobe and 0.3 mi west of the El Dorado County line 146 Comment
  UCR193458  Conyza canadensis George K. Helmkamp, E. A. Helmkamp 2007-9-9 12917 Sacramento Sacramento Valley, along Hwy CA-16, 0.8 mile west of the Amador County line 85 Comment
  UCR193459  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2007-9-9 12918 Sacramento Sacramento Valley, along Hwy CA-16, 0.8 mile west of the Amador County line 85 Comment
  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
  UCR205157  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2008-10-30 14301 Sacramento Southern Sacramento Valley, along CA-104, 0.6 mile west of Clay 24 Comment
  UCR219042  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2009-8-28 15538 Sacramento Northern Sacramento Valley, along Latrobe Road, 1.1 miles west of the El Dorado County line, 3 mi. NE (36 deg. ) of Rancho Murieta 140 Comment
  UCR219065  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2009-8-28 15541 Sacramento Northern Sacramento Valley, along Latrobe Road, 3.2 miles west of the El Dorado County line, 1 mi. due north of Rancho Murieta 73 Comment
  UCR219067  Croton setiger George K. Helmkamp, E. A. Helmkamp 2009-8-28 15544 Sacramento Northern Sacramento Valley, along Latrobe Road, 3.6 miles west of the El Dorado County line, 1 mi. NNW of Rancho Murieta 61 Comment
  UCR237580  Hordeum murinum subsp. leporinum George K. Helmkamp, E. A. Helmkamp 2012-3-3 18584 Sacramento Sacramento Valley/Delta, Twin Cities Road (Co. Rd. E-13), 0.1 mile NE of its junction with I-5 5 Comment
  UCR237711  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 5 Comment
  UCR253205  Amsinckia intermedia George K. Helmkamp, Amy Barnes 2014-4-7 22716 Sacramento Sacramento Valley, Clay East Road, 1 mile east of its junction with CA-104 52 Comment
  UCR253207  Triteleia laxa George K. Helmkamp, Amy Barnes 2014-4-7 22735 Sacramento Sacramento Valley, along CA-104/Twin Cities Road, WNW of Rancho Seco Nuclear Generating Station 56 Comment
  UCR253257  Festuca perennis George K. Helmkamp, Amy Barnes 2014-4-7 22725 Sacramento Sacramento Valley, Clay East Road, 1 mile east of its junction with CA-104 52 Comment
  UCR253258  Bromus hordeaceus George K. Helmkamp, Amy Barnes 2014-4-7 22724 Sacramento Sacramento Valley, Clay East Road, 1 mile east of its junction with CA-104 52 Comment
  UCR253259  Hordeum murinum subsp. leporinum George K. Helmkamp, Amy Barnes 2014-4-7 22723 Sacramento Sacramento Valley, Clay East Road, 1 mile east of its junction with CA-104 52 Comment
  UCR253548  Plagiobothrys greenei George K. Helmkamp, Amy Barnes 2014-4-7 22693 Sacramento Sacramento Valley, along CA-104/Twin Cities Rd., 0.7 mile west of the Amador County line 63 Comment
  UCR253549  Erodium botrys George K. Helmkamp, Amy Barnes 2014-4-7 22692 Sacramento Sacramento Valley, along CA-104/Twin Cities Rd., 0.7 mile west of the Amador County line 63 Comment
  UCR122881  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2001-5-29 6697 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
  UCR122883  Pediomelum californicum George K. Helmkamp, E. A. Helmkamp 2001-5-29 6702 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
  UCR122911  Geranium molle George K. Helmkamp, E. A. Helmkamp 2001-5-29 6709 San Benito South Coast Range, Gabilan Range, 7.1 mi. south of San Juan Bautista on Hwy G-1 488 Comment
  UCR122913  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2001-5-29 6711 San Benito South Coast Range, Gabilan Range, 7.1 mi. south of San Juan Bautista on Hwy G-1 488 Comment
  UCR122918  Adenostoma fasciculatum George K. Helmkamp, E. A. Helmkamp 2001-5-29 6720 San Benito South Coast Range, Gabilan Range, 7.1 mi. south of San Juan Bautista on Hwy G-1 488 Comment
  UCR123212  Triteleia ixioides subsp. ixioides George K. Helmkamp, E. A. Helmkamp 2001-5-30 6723 San Benito Gabilan Range, 11.0 mi south of San Juan Bautista on Hwy G-1; entrance to Fremont Peak State Park 800 Comment
  RSA666656  Pediomelum californicum George K. Helmkamp, E. A. Helmkamp 6702 San Benito Coalinga Rd., 2 mi. SE of Hernandez. 732 Comment
  CLARK-A1045-15  Eschscholzia glyptosperma George K. Helmkamp 1977-4-12 San Bernardino Adelanto east of U.S. 395; 7 miles north of Adelanto; dry wash; in creosote bush scrub; ; Victorville NW 7.5'Q 883 Comment
  CLARK-A1045-199  Eriogonum thurberi George K. Helmkamp 1979-4-29 San Bernardino Morongo Valley Morongo Valley 7.5'Q Comment
  CLARK-A1045-258  Senecio douglasii var. monoensis George K. Helmkamp 1977-4-22 San Bernardino Oro Grande Wash intersection of Phelan Road and U.S. Highway 395, west of Hesperia; ; Baldy Mesa 7.5'Q 914 Comment
  CLARK-A1045-358  Syntrichopappus fremontii George K. Helmkamp 1977-5-30 F San Bernardino Kelso Kelso Road summit, north of Kelso; ; Kelso 15'Q 1066 Comment
  CLARK-A1045-37  Lupinus odoratus George K. Helmkamp 1977-4-21 San Bernardino Adelanto 2 miles north of Adelanto; east of US Highway 395; Creosote Bush scrub; ; Adelanto 7.5'Q 883 Comment
  CLARK-A1045-388  Arabis glabra George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains Keller Peak 7.5'Q Comment
  CLARK-A1045-435  Astragalus bicristatus George K. Helmkamp 1979-6-29 San Bernardino San Bernardino Mountains .5 mile west of Forest Service Station; roadside; ; Fawnskin 7.5'Q 2133 Comment
  CLARK-A1045-458  Polygonum kelloggii George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains 300 yards north of Forest Service road 3N08 along 3N66Y; edge of drying seep; ; Big Bear City 7.5'Q 2285 Comment
  CLARK-A1045-488  Lepidium perfoliatum George K. Helmkamp 1979-6-5 San Bernardino San Bernardino Mountains north edge of Baldwin Lake; sagebrush scrub; ; Big Bear City 7.5'Q 2133 Comment
  CLARK-A1045-500  Linanthus nudatus George K. Helmkamp 1979-6-5 #1 San Bernardino San Bernardino Mountains north end of Lake; sagebrush scrub; ; Big Bear City 7.5' Q 2133 Comment
  CLARK-A1045-509  Mimulus rubellus George K. Helmkamp 1979-6-5 #1 San Bernardino San Bernardino Mountains north of Lake and State Highway 38 [18?]; drying stream bed; ; Big Bear City 7.5'Q 2133 Comment
  CLARK-A1045-514  Epilobium paniculatum George K. Helmkamp 1979-6-20 San Bernardino San Bernardino Mountains north of Baldwin Lake; Big Bear City 7.5'Q Comment
  CLARK-A1045-544  Arabis holboellii George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains 400 yards north of Forest Service road 3N08 along road 3N66Y; dry flat under pines; ; Big Bear City 7.5'Q 2285 Comment
  CLARK-A1045-604  Linanthus demissus George K. Helmkamp 1978-5-6 San Bernardino Mojave Desert Kingston Road, 3 miles northeast [of cut?]; Clark Mt. 15'Q Comment
  CLARK-A1045-610  Amphipappus fremontii George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains 1.5 miles east of Pass; limestone slope; ; Clark Mt. 15'Q 1097 Comment
  CLARK-A1045-614  Eriogonum fasciculatum George K. Helmkamp 1977-5-14 San Bernardino Mesquite Mountains Clark Mt. 15'Q Comment
  CLARK-A1045-619  Arabis pulchra George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert east slope of Cima Dome, along Cima Road; in joshua tree woodland; ; Mescal Range 15'Q 1462 Comment
  CLARK-A1045-622  Cassia armata George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert 7 miles north of Kelso along Cima Road [Hayden vicinity]; in creosote bush scrub; ; Kelso 15'Q 761 Comment
  CLARK-A1045-627  Brickellia incana George K. Helmkamp 1977-5-30 San Bernardino Mojave Desert Kelso 15'Q Comment
  CLARK-A1045-638  Gilia sinuata George K. Helmkamp 1977-5-30 San Bernardino Kelso Kelso 15'Q Comment
  CLARK-A1045-640  Eriogonum deflexum George K. Helmkamp 1977-5-29 San Bernardino Mojave Desert [along] Cima Road, north of Interstate Highway 15; ; Mescal Range 15'Q 1219 Comment
  CLARK-A1045-649  Plantago purshii var. oblonga George K. Helmkamp 1977-5-29 San Bernardino Cima Kelso 15'Q Comment
  CLARK-A1045-655  Erioneuron pulchellum George K. Helmkamp 1977-5-29 San Bernardino Cima Kelso 15'Q Comment
  CLARK-A1045-666  Caucalis microcarpa George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert Flynn 15'Q Comment
  CLARK-A1045-685  Hilaria rigida George K. Helmkamp 1978-5-6 San Bernardino Mojave Desert Kingston Road; Clark Mt 15'Q Comment
  CLARK-A1045-692  Franseria eriocentra George K. Helmkamp 1977-5-29 San Bernardino Mojave Desert at north edge of Ivanpah Mountains; ; Mescal Range 15'Q 1432 Comment
  CLARK-A1045-697  Linanthus breviculus George K. Helmkamp 1977-7-5 San Bernardino San Bernardino Mountains north of State highway 38 at Fish Creek; ; Moonridge 7.5' Q 2133 Comment
  CLARK-A1045-715  Oenothera deltoides George K. Helmkamp 1977-4-21 San Bernardino along U.S. 395; 2 miles north of Adelanto; Adelanto 7.5'Q Comment
  CLARK-A1045-745  Aristida glauca George K. Helmkamp 1977-5-15 San Bernardino Mesquite Mountains limestone slope east of Winters Pass; ; Clark Mt. 15'Q 1097 Comment
  CLARK-A1045-750  Galium stellatum subsp. eremicum George K. Helmkamp 1977-5-14 San Bernardino Mesquite Mountains limestone canyon east of Winters Pass; ; Clark Mt. 15'Q 1097 Comment
  CLARK-A1045-759  Purshia glandulosa George K. Helmkamp 1977-5-29 San Bernardino Mojave Desert Mescal Range 15'Q 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-A1045-789  Anisocoma acaulis George K. Helmkamp 1977-5-14 San Bernardino New York Mountains south end of New York Mountains; Mid Hills 15'Q Comment
  CLARK-A1045-813  Astragalus nuttallianus var. imperfectus George K. Helmkamp 1977-5-14 San Bernardino Mesquite Mountains Clark Mt. 15'Q Comment
  CLARK-A1045-828  Silene antirrhina George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains 1.5 miles east of the Pass; limestone slope; ; Clark Mt. 15'Q 1066 Comment
  CLARK-A1045-832  Mortonia utahensis George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains canyon east of Pass; ; Clark Mt. 15'Q 1066 Comment
  CLARK-A1045-837  Agave utahensis George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains Clark Mt. 15'Q Comment
  CLARK-A1045-843  Dalea fremontii var. minutifolia George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains Clark Mt. 15'Q Comment
  HSC79165  Isocoma acradenia G. K. Helmkamp 1983-10-8 - 11 San Bernardino Big Morongo Preserve of The Nature Conservancy, Morongo Valley, near the house in the San Bernardino Co. owned area. 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
  HSC79244  Solanum douglasii G. K. Helmkamp 1983-10-8 - 9 San Bernardino Big Morongo Preserve of The Nature Conservancy, Morongo Valley, near the house in the San Bernardino Co. owned area. 762 Comment
  OBI37417  Layia glandulosa G. Helmkamp & D. A. Hoover, D. A. Hoover 1985-6-5 552 San Bernardino N end of the Desert Wash Trl; at the edge of the wash 777 Comment
  OBI43829  Atriplex polycarpa G. K. Helmkamp 1986-9-27 s.n. San Bernardino Along Salt Crk at the Salt Spring Hills, 28 mi N of Baker on hwy 127 183 Comment
  OBI45895  Porophyllum gracile G. Helmkamp 1986-10-18 s.n. San Bernardino Whipple Mts, along Havasu Palms Rd ca 3 mi NW of Black Meadow Landing Rd (T3N, R26E, NW1/4 sec 21) 396 Comment
  RSA483735  Astragalus wootonii George K. Helmkamp 1988-4-29 s.n San Bernardino 0.2 mi N of Goffs. 793 Comment
  RSA567421  Galium johnstonii George K. Helmkamp 1993-9-12 22 -7 San Bernardino Burns Canyon, in vicinity of Burns Spring 1524 Comment
  RSA567423  Baccharis sergiloides George K. Helmkamp 1993-9-22 34 -7 San Bernardino 6.7 mi. up Burns Canyon from jct of Pioneertown and Pipes Cyn Rds. 1529 Comment
  RSA567428  Eriogonum davidsonii George K. Helmkamp 1993-9-12 23 -9 San Bernardino Along the edge of Burns Canyon. 1372 Comment
  RSA567429  Mirabilis bigelovii George K. Helmkamp 1993-9-12 23 -2 San Bernardino Along the edge of Burns Canyon. 1372 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
  SBBG119154  Baileya pleniradiata G. K. Helmkamp with E. A. Helmkamp 1999-9-24 5291 a San Bernardino Yucca Valley, Twentynine Palms Hwy (St Hwy 62) just W of Old Woman Springs Rd 991 Comment
  SBBG80732  Polygonum argyrocoleon G. K. Helmkamp 1985-4-30 446 San Bernardino SE of Morongo Valley, Morongo Cyn, at the entrance to the Preserve 762 Comment
  SD125643  Vicia villosa G. K. Helmkamp 1974-5-28 San Bernardino Along CA 18 south of Running Springs 1524 Comment
  SD132479  Polypogon interruptus G. Helmkamp 1985-6-3 534 San Bernardino Big Morongo Preserve, riparian area beside the Willow Trail and behind the manager's residence 762 Comment
  SD143913  Astragalus lentiginosus var. variabilis G. K. Helmkamp, E. A. Helmkamp 1998-4-9 3314 San Bernardino Mojave Desert; between Highway 58 and the Railroad at Edwards Siding. 732 Comment
  SD225051  Aphyllon cooperi subsp. cooperi G. K. Helmkamp 1998-4-4 3124 San Bernardino Mojave Desert; S edge of Cadiz Dry Lake, 13.1 mi N of mile-marker 76 on CA hwy 62 (Twentynine Pams Hwy), E of Twentynine Palms 182 Comment
  SD225056  Linanthus maculatus G. K. Helmkamp 1998-3-30 3059 San Bernardino Mojave Desert: E of town of Joshua Tree & S of Copper Mtn, 0.4 mi. E of the S end of Kerr Rd near Joshua Tree National Park Comment
  SD225133  Phoradendron macrophyllum George Helmkamp 1995-11-4 San Bernardino Big Morongo Creek in the Nature Preserve. 776 Comment
  SEINET2042025  Lupinus arizonicus George Helmkamp, E. A. Helmkamp 2001-3-30 6384 San Bernardino Mojave Desert; CA-62, 16.2 mi E of Utah Tr. (29 Palms) near Dale Lake. 366 Comment
  SEINET2045173 Image available Baccharis brachyphylla G. Helmkamp 1985-9-23 717 San Bernardino South of Morongo Valley on Canyon Trail 0.5 mile downstream from the Kiosk 732 Comment
  SEINET3084244 Image available Cryptantha pterocarya G. Helmkamp 1995-3-28 sn San Bernardino Mojave Desert (eastern): beside old US Hwy 66, 11.5 miles E of Goffs 640 Comment
  UCR101040  Eremalche rotundifolia George K. Helmkamp, E. A. Helmkamp 1998-4-9 3297 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
  UCR101046  Eruca vesicaria subsp. sativa George K. Helmkamp, E. A. Helmkamp 1998-4-9 3302 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
  UCR101112  Camissonia claviformis subsp. aurantiaca George K. Helmkamp, E. A. Helmkamp 1998-2-26 2751 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101631  Cryptantha pterocarya var. pterocarya George K. Helmkamp, E. A. Helmkamp 1998-2-26 2804 San Bernardino Eastern Mojave Desert, Saltbush scrub flat east of Soda Lake and 5.9 mi SSE of Baker on a farm road leading to Little Cowhole Mtn. 299 Comment
  UCR101638  Streptanthella longirostris George K. Helmkamp, E. A. Helmkamp 1998-2-26 2762 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101639  Streptanthella longirostris George K. Helmkamp, E. A. Helmkamp 1998-2-26 2802 San Bernardino Eastern Mojave Desert, Saltbush scrub flat east of Soda Lake and 5.9 mi SSE of Baker on a farm road leading to Little Cowhole Mtn. 299 Comment
  UCR102984  Astragalus aridus George K. Helmkamp 1998-3-30 3017 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR103302  Camissonia claviformis subsp. claviformis George K. Helmkamp 1998-3-30 2998 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR104052  Anisocoma acaulis George K. Helmkamp, E. A. Helmkamp 1998-3-16 2831 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
  UCR104861  Eriogonum thomasii George K. Helmkamp 1998-3-30 3040 San Bernardino Mojave Desert, vicinity of Twentynine Palms; Encelia Ave., 1.0 mi. north of Calif. Hwy 62 793 Comment
  UCR104863  Camissonia claviformis subsp. claviformis George K. Helmkamp, E. A. Helmkamp 1998-3-16 2867 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
  UCR104868  Langloisia matthewsii George K. Helmkamp 1998-3-30 3012 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR104869  Cryptantha angustifolia George K. Helmkamp 1998-3-30 3008 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR118310  Phacelia fremontii George K. Helmkamp, E. A. Helmkamp 1998-4-18 3324 San Bernardino Central Mojave Desert., 18 mi ESE of Baker on Kelbaker Rd. 884 Comment
  UCR118316  Camissonia claviformis subsp. claviformis George K. Helmkamp, E. A. Helmkamp 1998-4-19 3355 San Bernardino Mojave Desert, northwest side of East Cronese Lake, about 15 miles west of Baker 335 Comment
  UCR121846  Ericameria linearifolia George K. Helmkamp, E. A. Helmkamp 2001-3-24 6323 San Bernardino East foothills, San Bernardino Mtns, Pipes Cyn Rd., 0.4 mi west of Pioneertown Rd., north of Yucca Valley. 1250 Comment
  UCR121864  Rumex hymenosepalus George K. Helmkamp, E. A. Helmkamp 2001-3-24 6319 San Bernardino Southcentral Mojave Desert, 0.3 mile west of CA Hwy 247 on Pipes Canyon Road 1037 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
  UCR122800  Cryptantha circumscissa George K. Helmkamp, E. A. Helmkamp 2001-3-31 6341 A San Bernardino Eastern Mojave Desert, Goffs Rd, 8.1 mi east of Goffs 610 Comment
  UCR122831  Plantago ovata George K. Helmkamp, E. A. Helmkamp 2001-3-31 6345 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122833  Chorizanthe rigida George K. Helmkamp, E. A. Helmkamp 2001-3-31 6344 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122838  Mimulus bigelovii var. bigelovii George K. Helmkamp, E. A. Helmkamp 2001-3-31 6362 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122961  Cryptantha barbigera George K. Helmkamp, E. A. Helmkamp 2001-3-30 6429 San Bernardino Eastern Mojave Desert, US-95, 8.5 mi south of I-40. 351 Comment
  UCR122963  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 2001-3-30 6430 San Bernardino Eastern Mojave Desert, US-95, 8.5 mi south of I-40. 351 Comment
  UCR122968  Pectocarya heterocarpa George K. Helmkamp, E. A. Helmkamp 2001-3-30 6432 San Bernardino Eastern Mojave Desert, US-95, 8.5 mi south of I-40. 351 Comment
  UCR133512  Chenopodium berlandieri George K. Helmkamp 1993-9-22 34- 15 San Bernardino San Bernardino Mtns., 6.7 mi. up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 1529 Comment
  UCR137745  Eriogonum fasciculatum var. polifolium George K. Helmkamp, E. A. Helmkamp 1999-9-30 5306 San Bernardino San Bernardino Mountains, 5.7 miles up Burns Cyn Rd from Rimrock Rd., NW of Pioneertown 1768 Comment
  UCR137747  Eriogonum wrightii var. membranaceum George K. Helmkamp, E. A. Helmkamp 1999-9-30 5302 San Bernardino San Bernardino Mountains, 5.7 miles up Burns Cyn Rd from Rimrock Rd., NW of Pioneertown 1768 Comment
  UCR14005  Galium parishii George K. Helmkamp 1973-9-25 s.n. San Bernardino San Bernardino Mtns., Holcomb Creek north of Fawnskin 1835 Comment
  UCR14649  Eriastrum diffusum 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
  UCR157791  Cryptantha costata George K. Helmkamp, E. A. Helmkamp 1998-2-26 2787 B 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
  UCR15935  Trichostema micranthum George K. Helmkamp, L. Hubbard, O. F. Clarke 1979-6-20 s.n. San Bernardino San Bernardino Mtns., Forest Service Road 3N06, c. 3 mi. west of the county dump north of Baldwin Lake 2287 Comment
  UCR26753  Centrostegia thurberi subsp. thurberi 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
  UCR37550  Antirrhinum coulterianum George K. Helmkamp 1984-4-20 840420- 56 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37652  Mimulus parishii George K. Helmkamp 1984-4-29 A- 24 San Bernardino Little San Bernardino Mtns., Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters 701 Comment
  UCR37742  Pectis papposa George K. Helmkamp 1983-10-8 B 25 San Bernardino Little San Bernardino Mountains, TNC Big Morongo Preserve, in Big Morongo Canyon, south of town of Morongo Valley in Big Morongo Canyon 762 Comment
  UCR44829  Senna covesii George K. Helmkamp 1986-10-18 s.n. San Bernardino Sonoran (Colorado) Desert, Whipple Mountains, along Havasu Palms Road, c. 3 mi NW of Black Meadow Landing Road 396 Comment
  UCR45124  Ericameria paniculata George K. Helmkamp 1986-10-18 s.n. San Bernardino Sonoran (Colorado) Desert, Chemehuevi Wash, south of Lake Havasu Rd, 12.4 mi. SE of intersection w/ Hwy 95 274 Comment
  UCR45190  Tidestromia oblongifolia George K. Helmkamp 1986-9-27 s.n. San Bernardino Mojave Desert, Along Salt Creek at the Salt Spring Hills 28 mi. north of Baker on Hwy 127 183 Comment
  UCR45848  Euphorbia setiloba George K. Helmkamp 1986-9-27 s.n. San Bernardino Eastern Mojave Desert., 0.5 mi south of Granite Pass along Kelbaker Road, c. 14 mi south of Kelso Comment
  UCR51294  Porophyllum gracile 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
  UCR51310  Eriastrum eremicum 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
  UCR53533  Astragalus wootonii George K. Helmkamp 1988-4-29 s.n. San Bernardino Eastern Mojave Desert, 0.2 mi north of Goffs 793 Comment
  UCR78021  Eriogonum brachyanthum George K. Helmkamp 1993-9-18 29- 18 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
  UCR78026  Trichostema micranthum George K. Helmkamp 1993-9-22 36- 02 San Bernardino San Bernardino Mtns, 16.4 mi. up Burns Canyon from junction of Pipes Canyon and Pioneertown Roads 2195 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
  UCR79280  Eriogonum deflexum var. baratum George K. Helmkamp 1993-9-22 35- 11 San Bernardino San Bernardino Mtns., 14.4 mi up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 2073 Comment
  UCR89109  Phoradendron villosum George K. Helmkamp 1995-10-28 1- 01 San Bernardino San Bernardino Mtns, 3.5 mi. NW of Rimrock, Burns Cyn. Rd. 1673 Comment
  UCR89992  Perityle emoryi George K. Helmkamp 1995-3-24 s.n. San Bernardino Eastern Mojave Desert, 1.6 miles west of Hwy 127, at point 0.9 mile north of Baker 350 Comment
  UCR90021  Nemacladus orientalis George K. Helmkamp 1995-3-24 s.n. San Bernardino Eastern Mojave Desert, 1.6 miles west of Hwy 127, at point 0.9 mile north of Baker 350 Comment
  UCR90026  Cryptantha maritima George K. Helmkamp 1995-3-27 s.n. San Bernardino Mojave Desert, 1.6 mi west of Hwy 127 at a point 0.9 mi north of Baker 351 Comment
  UCR90217  Lupinus sparsiflorus George K. Helmkamp 1995-3-28 s.n. San Bernardino Eastern Mojave Desert, Beside old US hwy 66, 11.5 mi east of Goffs 650 Comment
  UCR91929  Ranunculus alismifolius var. alismellus George K. Helmkamp 1996-6-11 1149 San Bernardino San Bernardino Mountains, Along 2N11 SW of the city of Big Bear Lake, c. 0.5 mile west of [2N10] Mill Creek Road 2256 Comment
  UCR91942  Lupinus latifolius var. parishii George K. Helmkamp 1996-6-11 1142 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR92495  Stipa occidentalis George K. Helmkamp 1996-6-11 1154 San Bernardino San Bernardino Mountains, Along 2N11 SW of the city of Big Bear Lake, c. 0.5 mile west of [2N10] Mill Creek Road 2256 Comment
  UCR93389  Lycium cooperi 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
  VVC1486  Desmodium tortuosum G. K. Helmkamp 1995-10-23 s.n. San Bernardino Mojave Desert, Yucca Valley, Old Woman Springs Rd. , 8.2 mi. N of Hwy 62 1000 Comment
  CLARK-A1045-898  Silene gallica George K. Helmkamp 1978-4-15 San Bernardino Fontana Sierra Avenue, disturbed roadside; Fontana 7.5'Q Comment
  OBI37465  Sonchus asper G. Helmkamp 1985-5-4 448 San Bernardino Morongo Cyn; SE of Morongo Valley. Along the Mesquite Trl at the old dam 747 Comment
  SEINET5344365  Chylismia claviformis subsp. aurantiaca George K. Helmkamp, E. A. Helmkamp 1998-2-26 2751 San Bernardino Mojave Desertm, East Cronise Dry Lake. 0.2 mi S of I-15 on Basin Rd. 332 Comment
  CLARK-A1045-1250  Navarretia intertexta George K. Helmkamp 1979-6-6 San Diego Lake Henshaw overlooking Lake at its south tip; disturbed soil; Warners Ranch 7.5'Q Comment
  CLARK-A1045-1257  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-A1045-1271  Sparganium eurycarpum George K. Helmkamp 1979-6-6 San Diego Pala Creek along Creek, 3 miles north of Pala; Pechanga 7.5'Q Comment
  CLARK-A1045-1283  Cryptantha racemosa George K. Helmkamp 1978-3-16 San Diego Anza-Borrego Desert State Park Canon sin Nombre [No-name Canyon]; silty deposit; Sweeney Pass 7.5'Q Comment
  CLARK-A1045-1284  Streptanthella longirostris George K. Helmkamp 1978-3-17 San Diego Anza-Borrego Desert Bisnaga Alta Wash; Sweeney Pass 7.5'Q Comment
  CLARK-A1045-1286  Gilia stellata George K. Helmkamp 1978-3-16 San Diego Anza-Borrego Desert State Park Bisnaga Alta Wash; Sweeney Pass 7.5'Q Comment
  CLARK-A1045-1288  Lyrocarpa coulteri var. palmeri George K. Helmkamp 1978-3-17 San Diego Anza-Borrego Desert State Park rocky base of Bisnaga Alta Wash; Sweeney Pass 7.5'Q Comment
  CLARK-A1045-1292  Lupinus arizonicus George K. Helmkamp 1977-1-22 San Diego Anza-Borrego Desert State Park Carrizo Badlands Overlook; Sweeney Pass 7.5'Q Comment
  CLARK-A1045-1323  Frankenia grandifolia George K. Helmkamp 1977-10-15 San Diego Imperial Beach in Border Field State Park; in alkali flat, growing with Distichlis; Imperial Beach 7.5'Q Comment
  CLARK-A1045-1324  Haplopappus venetus subsp. oxyphyllus George K. Helmkamp 1977-10-15 San Diego Imperial Beach in Border Field State Park; isandy area just off beach, ; Imperial Beach 7.5'Q Comment
  CLARK-A1045-1326  Aster spinosus George K. Helmkamp 1977-10-9 San Diego Imperial Beach along 19th Street; weed in farmland; Imperial Beach 7.5'Q Comment
  RSA602628  Echinochloa colona George K. Helmkamp 1996-9-11 1180 San Diego Ca. 5 miles south of California Highway 76 on Couser Ranch Rd. onto Lilac Rd. to Wills avocado ranch., (33 deg 15.6'N, 117 deg 6'W) Alt. 335m/1100 ft. [UTM 10km cell: MG-9E, 8N. Weaver Mountain] 335 Comment
  RSA602629  Polygonum lapathifolium George K. Helmkamp 1996-9-11 1170 San Diego Ca. 5 miles south of California Highway 76 on Couser Ranch Rd. onto Lilac Rd. to Wills avocado ranch., [UTM 10km cell: MG-9E, 8N. Weaver Mountain] 335 Comment
  UCR114245  Eriogonum parvifolium George K. Helmkamp 1997-7-29 2232 San Diego South Coast, San Onofre State Beach 30 Comment
  UCR114247  Mimulus aurantiacus var. aurantiacus George K. Helmkamp 1997-7-29 2245 San Diego South Coast, San Onofre State Beach 30 Comment
  UCR130630  Castilleja foliolosa George K. Helmkamp, E. A. Helmkamp 1999-4-15 4652 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
  UCR130636  Lathyrus vestitus subsp. alefeldii George K. Helmkamp, E. A. Helmkamp 1999-4-15 4657 a 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
  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
  UCR130657  Barbarea orthoceras George K. Helmkamp, E. A. Helmkamp 1999-4-16 4666 San Diego Cuyamaca Mtns., Old Viejas Grade alongside creek 1.5 mi NW of Descanso. 1098 Comment
  UCR130680  Sanicula bipinnatifida George K. Helmkamp, E. A. Helmkamp 1999-4-15 4643 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
  UCR130700  Eriogonum fasciculatum var. foliolosum George K. Helmkamp, E. A. Helmkamp 1999-4-17 4676 San Diego Peninsular Ranges, Barrett-Smith Rd between Barrett Junction & Barrett School Rd. NE of Calif. Hwy 94 268 Comment
  UCR131358  Ericameria linearifolia George K. Helmkamp, E. A. Helmkamp 1999-4-16 4671 San Diego Sweetwater River Drainage, Japatul Rd 1/2 mi SE of Loveland Reservoir. 488 Comment
  UCR131359  Viguiera laciniata George K. Helmkamp, E. A. Helmkamp 1999-4-16 4672 San Diego Sweetwater River Drainage, Japatul Rd 1/2 mi SE of Loveland Reservoir. 488 Comment
  UCR14519  Plantago patagonica George K. Helmkamp 1974-5-21 s.n. San Diego Peninsular Range, Julian Comment
  UCR14520  Astragalus oocarpus George K. Helmkamp 1974-5-21 s.n. San Diego Peninsular Range, along roadside of Hwy 79 in Dodge Valley Comment
  UCR94630  Haplopappus menziesii George K. Helmkamp, E. A. Helmkamp 1996-9-11 1157 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
  UCR94659  Digitaria sanguinalis George K. Helmkamp 1996-9-11 1167 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
  CDA25632  Raphanus raphanistrum G. K. Helmkamp, E. A. Helmkamp 2007-10-13 13087 San Joaquin Northern San Joaquin Valley; Along Highway CA-88, 1.0 mile southwest of Clements at Disch Road. Comment
  CDA25995  Echinochloa colona G. K. Helmkamp, E. A. Helmkamp 2008-10-9 14228 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
  RSA789510  Gilia tricolor subsp. tricolor George K. Helmkamp, E. A. Helmkamp 2010-4-7 15835 San Joaquin along CA-88, 1.1 miles southwest of the Amador County line, 6 miles NE (33 deg.) of Clements 79 Comment
  SD239689  Stellaria media George K. Helmkamp, E. A. Helmkamp 2010-4-7 15832 B San Joaquin Northern San Joaquin Valley: Collier Road, 0.1 mile wesst of its junction with CA-88, 1.83 mile NE (27a^z) of Clements (Clements 7.5'Q) 46 Comment
  SD240812  Poa annua George K. Helmkamp, E. A. Helmkamp 2012-4-7 18713 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
  SD240817  Amaranthus powellii George K. Helmkamp, E. A. Helmkamp 2011-10-15 18432 San Joaquin San Joaquin Valley: along CA-26, 0.6 mile northeast of Escalon-Bellota Road (Linden 7.5'Q) 39 Comment
  SD241195  Veronica persica George K. Helmkamp, E. A. Helmkamp 2012-4-7 18727 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
  SEINET3237953 Image available Nicotiana acuminata var. multiflora George K. Helmkamp, E. A. Helmkamp 2007-10-13 13086 San Joaquin Northern San Joaquin Valley; along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road 37 Comment
  SEINET3237954 Image available Amaranthus albus George K. Helmkamp, E. A. Helmkamp 2007-10-13 13082 San Joaquin Northern San Joaquin Valley; along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road. 37 Comment
  SEINET3828573  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2012-1 18721 San Joaquin San Joaquin Valley: along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden (Valley Springs SW 7.5') 52 Comment
  UCR232241  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2011-3-12 17066 San Joaquin Northern San Joaquin Valley, Collier Road, 0.2 mile east of its junction with Suttenfield Road, 9.4 mi. NE (50 deg. ) of Lodi 40 Comment
  UCR232292  Blennosperma bakeri George K. Helmkamp, E. A. Helmkamp 2011-3-29 17097 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
  UCR235295  Erigeron canadensis George K. Helmkamp, E. A. Helmkamp 2011-11-21 18475 San Joaquin Northeastern San Joaquin Valley, along Johnson Road, 0.8 mile south of its junction with CA-12, NE of Lockeford, SW of Camanche Reservoir 53 Comment
  UCR235297  Helianthus bolanderi George K. Helmkamp, E. A. Helmkamp 2011-11-21 18474 San Joaquin Northeastern San Joaquin Valley, along Johnson Road, 0.1 mile north of its junction with Acampo Road, 2.3 miles SW of Camanche Reservoir 58 Comment
  UCR238414  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2012-4-7 18714 San Joaquin San Joaquin Valley, along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden 52 Comment
  UCR242631  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2010-4-7 15824 San Joaquin Northeast San Joaquin Valley, junction of CA-88 and CA-12, about 6 miles NE of Lockeford, 1.2 mi. NE of Clements 40 Comment
  UCR242806  Lasthenia californica George K. Helmkamp, E. A. Helmkamp 2010-4-7 15822 San Joaquin Northeast San Joaquin Valley, junction of CA-88 and CA-12, about 6 miles NE of Lockeford, 1.2 mi. NE of Clements 40 Comment
  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
  UCR253570  Erodium moschatum George K. Helmkamp 2014-3-18 22583 San Joaquin Eastern San Joaquin Valley, Collier Road, 0.2 mile west of its junction with CA-88, c. 2 miles west of Comanche Reservoir 43 Comment
  CAS-BOT-BC183855  Geranium molle G. K. Helmkamp; E. A. Helmkamp 2005-3-25 9207 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
  CAS-BOT-BC394050  Stellaria media G. K. Helmkamp 2004-2-6 8249 San Luis Obispo Central Coast: Oso Flaco Lake Road, 0.5 mi E of the lake 9 Comment
  CDA4174  Lathyrus odoratus G. K. Helmkamp, E. A. Helmkamp 1998-5-19 3872 San Luis Obispo Santa Lucia Range. Southwest of Paso Robles along CA-46 at York Mountain Rd. Comment
  CDA4339  Trifolium hirtum G. K. Helmkamp, E. A. Helmkamp 2000-4-2 5412 San Luis Obispo Central Coast; road crest between See Canyon Road and Profumo Canyon Road, SW of San Luis Obispo Comment
  CLARK-A1045-1328  Calandrinia ciliata var. menziesii George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay coastal strand; Morro Bay North 7.5' Q Comment
  CLARK-A1045-1332  Pholistoma auritum George K. Helmkamp 1978-4-22 San Luis Obispo Los Padres National Forest Cerro Alto Camground; Atascadero 7.5'Q Comment
  CLARK-A1045-1355  Vicia californica George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road, 3.3 miles east of Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1373  Lupinus polycarpus George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road at Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1374  Cerastium viscosum George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road at Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1376  Erodium obtusiplicatum George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road at Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1378  Lupinus nanus George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road at Morro Bay; 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
  IRVC28944  Phacelia ramosissima var. ramosissima G. K. Helmkamp 2003-9-19 8150 San Luis Obispo Nipomo Mesa area. Pomeroy Rd, 0.2 mi S of Los Berros Rd. Central Coast 76 Comment
  IRVC29228  Conyza canadensis G. K. Helmkamp, E. A. Helmkamp 2004-10-8 8848 San Luis Obispo Biddle Regional Park, 7 mi NE of Arroyo Grande along Lopez Drive and Arroyo Grande Creek Central Coast 136 Comment
  RSA613940  Lomatium vaginatum George K. Helmkamp, E. Helmkamp 1997-3-8 1405 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
  RSA613946  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 1997-3-8 1418 San Luis Obispo Along CA-58 just W of Navajo Creek (W of Carrizo Plain).Ca. 5 miles south of California Highway 76 on Couser Ranch Rd. onto Lilac Rd. to Wills avocado ranch. (33 deg 15.6N, 117 deg 6W) 335 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
  SD144462  Acmispon wrangelianus G. K. Helmkamp, E. A. Helmkamp 1998-4-8 3214 San Luis Obispo Elkhorn Grade Rd, 13.7 mi NW of jct. with CA Hwy 33 (roughly W of Maricopa) 579 Comment
  SD148066  Chloropyron maritimum subsp. palustre G. K. Helmkamp, E. A. Helmkamp 2000-6-15 5686 San Luis Obispo Coastal strand between Los Osos and sand dunes W of the end of Howard street (Morro Bay South) 14 Comment
  SD148254  Centaurea iberica G. K. Helmkamp, E. A. Helmkamp 2000-9-2 5971 San Luis Obispo Irish Hills; Profumo Canyon, 2.2 miles west of Los Osos Valley Road. 136 Comment
  SD197657  Asclepias fascicularis G. K. Helmkamp 1990-9-3 San Luis Obispo Central Coast: north of the bay at Avila Beach. 7 Comment
  SD232688  Lupinus variicolor G. Helmkamp 1996-5-25 1062 San Luis Obispo Dried vernal pools between CA-1 and the ocean 1.5 miles north of Piedras Blancas lighthouse near the northern border of the county. 14 Comment
  SD236376  Chorizanthe douglasii G. K. Helmkamp, E. A. Helmkamp 2005-4-22 9401 San Luis Obispo Inner South Coast Ranges: Carrizo Highway at Mile- 32, Calif. Hwy 58, east of Santa Margarita, beside Windmill Creek. 509 Comment
  SEINET1004409  Erodium botrys George K. Helmkamp 2004-1 8353 San Luis Obispo Central Coast: Nipomo Mesa, between Arroyo Grande and Nipomo, Willow Rd, 0.6 mi E of Hwy CA-1. 91 Comment
  SEINET12805538  Phacelia ramosissima var. ramosissima George K. Helmkamp, E. A. Helmkamp 2005-1 9573 San Luis Obispo Arroyo Grande to Huasna Road along Arroyo Seco Creek, 7.8 miles northeast of Huasna Townsite Road 333 Comment
  UC1792832  Deinandra increscens subsp. increscens G. K. Helmkamp 2003-10-24 8215 San Luis Obispo Central Coast: El Campo Rd 0.1 mi E of Los Berros Rd, SE of Arroyo Grande 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
  UCD108119  Lupinus latifolius G. K. Helmkamp; E. K. Helmkamp 2001-4-29 6588 San Luis Obispo San Luis Obispo County: Irish Hills; Clark Valley Road; 4.2 mi S of Los Osos Valley Rd. (east of Los Osos). 274 Comment
  UCD121330  Asclepias fascicularis G. K. Helmkamp; E. A. Helmkamp 2004-8-14 8784 San Luis Obispo San Luis Obispo County: Central Coast: junction of Thompson Rd. and Mehlschau Rd., NE of Nipomo. 107 Comment
  UCD53467  Arctostaphylos pechoensis G. K. Helmkamp; E. K. Helmkamp 2001-4-29 6570 San Luis Obispo Irish Hills; Clark Valley Road; 2.8 miles south of Los Osos Valley Rd. (east of Los Osos). 91 Comment
  UCD57158  Briza maxima G. K. Helmkamp; E. A. Helmkamp 1998-5-19 3875 San Luis Obispo San Luis Obispo Co.: Santa Lucia Range. SW of Paso Robles along CA-46 at York Mtn. Rd. 396 Comment
  UCD95312  Eschscholzia californica G. K. Helmkamp 2004-3-15 8379 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
  UCR101014  Platystemon californicus George K. Helmkamp, E. A. Helmkamp 1998-4-8 3216 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with Calif. Hwy 33, roughly WNW of Maricopa 579 Comment
  UCR101021  Festuca microstachys George K. Helmkamp, E. A. Helmkamp 1998-4-8 3225 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with Calif. Hwy 33, roughly WNW of Maricopa 579 Comment
  UCR101023  Allium howellii var. howellii George K. Helmkamp, E. A. Helmkamp 1998-4-8 3226 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with Calif. Hwy 33, roughly WNW of Maricopa 579 Comment
  UCR101028  Monolopia lanceolata George K. Helmkamp, E. A. Helmkamp 1998-4-8 3233 San Luis Obispo Soda Lake Rd, 6.6 mi. NW of jct with Calif. hwy 33 (roughly west of Maricopa). 671 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
  UCR101633  Plagiobothrys canescens George K. Helmkamp, E. A. Helmkamp 1998-4-8 3223 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with Calif. Hwy 33, roughly WNW of Maricopa 579 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
  UCR104811  Horkelia cuneata George K. Helmkamp 1997-6-20 2053 San Luis Obispo Central Coast, Los Osos, c. 0.2 mi. NE of Buckskin & Martingale 27 Comment
  UCR104813  Lupinus albifrons George K. Helmkamp 1997-6-20 2057 San Luis Obispo Central Coast, Los Osos, c. 0.2 mi. NE of Buckskin & Martingale 27 Comment
  UCR115581  Lotus micranthus George K. Helmkamp, E. A. Helmkamp 2000-4-20 5413 San Luis Obispo Central Coast, road crest between See Canyon Road and Prefumo Canyon Road, SW of San Luis Obispo 320 Comment
  UCR115583  Cryptantha clevelandii George K. Helmkamp, E. A. Helmkamp 2000-4-20 5411 San Luis Obispo Central Coast, road crest between See Canyon Road and Prefumo Canyon Road, SW of San Luis Obispo 320 Comment
  UCR115588  Layia glandulosa George K. Helmkamp, E. A. Helmkamp 2000-6-15 5675 San Luis Obispo Central Coast, between Los Osos and sand dunes west of the end of Howard St. 15 Comment
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Jan 8 2013
  UCR115589  Eriastrum densifolium subsp. densifolium George K. Helmkamp, E. A. Helmkamp 2000-6-15 5677 San Luis Obispo Central Coast, between Los Osos and sand dunes west of the end of Howard St. 15 Comment
  UCR115772  Phacelia nemoralis subsp. nemoralis George K. Helmkamp, E. A. Helmkamp 2000-4-20 5399 San Luis Obispo Central Coast, Prefumo Cyn., 1.2 mi south of Los Osos Valley Rd. 183 Comment
  UCR115790  Pholistoma auritum var. auritum George K. Helmkamp, E. A. Helmkamp 2000-4-19 5372 San Luis Obispo Central Coast, Irish Hills, See Canyon at Pippin Lane, about 1.5 mi north of San Luis Bay Dr. 76 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
  UCR115815  Cordylanthus maritimus subsp. maritimus George K. Helmkamp, E. A. Helmkamp 2000-6-15 5686 San Luis Obispo Central Coast, between Los Osos and sand dunes west of the end of Howard St. 15 Comment
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Jun 16 2008
  UCR115817  Limonium californicum George K. Helmkamp, E. A. Helmkamp 2000-6-15 5684 San Luis Obispo Central Coast, between Los Osos and sand dunes west of the end of Howard St. 15 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
  UCR118360  Stachys bullata George K. Helmkamp, E. A. Helmkamp 1998-6-30 4235 San Luis Obispo Central Coast Ranges, Irish Hills, SW of San Luis Obispo, Prefumo Cyn., 3.2 mi SW of Los Osos Valley Rd. 198 Comment
  UCR118366  Phacelia imbricata subsp. imbricata George K. Helmkamp, E. A. Helmkamp 1998-6-30 4229 San Luis Obispo Central Coast, Irish Hills, SW of San Luis Obispo; Prefumo Cyn 2.2 mi SW of Los Osos Valley Rd. 137 Comment
  UCR121776  Cardionema ramosissimum George K. Helmkamp 2002-4-20 7467 San Luis Obispo Central Coast, Los Osos, 0.2 mile northwest of Monarch Lane 9 Comment
  UCR122145  Lessingia filaginifolia var. filaginifolia George K. Helmkamp, E. A. Helmkamp 2000-4-21 5457 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122147  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2000-4-21 5459 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122162  Castilleja exserta subsp. latifolia George K. Helmkamp, E. A. Helmkamp 2000-4-22 5473 San Luis Obispo Central Coast, Los Osos, between the west end of Howard Ave. and Morro Bay sand dunes 15 Comment
  UCR122487  Ericameria linearifolia George K. Helmkamp, E. A. Helmkamp 2001-5-2 6632 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122513  Chorizanthe douglasii George K. Helmkamp, E. A. Helmkamp 2001-5-2 6630 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122515  Anthriscus caucalis George K. Helmkamp, E. A. Helmkamp 2001-5-2 6601 San Luis Obispo South Coast Range, La Panza Range, Calf Canyon, CA Hwy 58, 4.5 mi east of Santa Margarita 335 Comment
  UCR122517  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2001-5-2 6603 San Luis Obispo South Coast Range, La Panza Range, Calf Canyon, CA Hwy 58, 4.5 mi east of Santa Margarita 335 Comment
  UCR122591  Galium aparine George K. Helmkamp 1995-11-23 114 San Luis Obispo Central Coast, Junction of Martingale Avenue and Buckskin Drive in Los Osos 46 Comment
  UCR122593  Gnaphalium luteoalbum George K. Helmkamp 1995-11-23 112 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
  UCR122599  Isocoma menziesii var. sedoides George K. Helmkamp 1995-11-25 95- 103 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
  UCR122600  Setaria parviflora George K. Helmkamp 1995-11-25 104 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
  UCR122638  Mimulus aurantiacus George K. Helmkamp, E. A. Helmkamp 1998-5-19 3877 San Luis Obispo Outer South Coast Range; Santa Lucia Range, southwest of Paso Robles along CA Hwy 46 at York Mountain Road 366 Comment
  UCR122639  Clarkia purpurea George K. Helmkamp, E. A. Helmkamp 1998-5-19 3880 San Luis Obispo Outer South Coast Range; Santa Lucia Range, southwest of Paso Robles along CA Hwy 46 at York Mountain Road 366 Comment
  UCR122736  Filago gallica George K. Helmkamp, E. A. Helmkamp 1998-5-20 3889 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
  UCR122806  Lathyrus odoratus George K. Helmkamp, E. A. Helmkamp 1998-5-19 3872 San Luis Obispo Outer South Coast Range; Santa Lucia Range, southwest of Paso Robles along CA Hwy 46 at York Mountain Road 366 Comment
  UCR123152  Horkelia cuneata George K. Helmkamp, E. A. Helmkamp 2002-4-16 7403 San Luis Obispo Central Coast, Park Ridge 0.5 mi east of Morro Bay near Turri Road 76 Comment
  UCR123184  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 1998-5-19 3874 San Luis Obispo Outer South Coast Range; Santa Lucia Range, southwest of Paso Robles along CA Hwy 46 at York Mountain Road 366 Comment
  UCR123555  Camissonia cheiranthifolia subsp. cheiranthifolia George K. Helmkamp, Elizabeth Helmkamp 1999-11-10 5329 A San Luis Obispo Central Coast, Morro Bay State Park at the south end of the marina. 6 Comment
  UCR131094  Juncus balticus George K. Helmkamp, E. A. Helmkamp 1999-5-22 4909 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131351  Stellaria media George K. Helmkamp, E. A. Helmkamp 1999-5-22 4902 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131353  Lobularia maritima George K. Helmkamp, E. A. Helmkamp 1999-5-22 4919 San Luis Obispo Central Coast, Los Osos; north of the corner of Buckskin Dr. & Martingale Ave. 61 Comment
  UCR131835  Solanum douglasii George K. Helmkamp 2003-10-8 8191 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
  UCR131837  Stachys chamissonis George K. Helmkamp 2003-10-8 8189 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
  UCR131915  Bromus catharticus George K. Helmkamp 2003-11-22 8223 San Luis Obispo Central Coast, base of Nipomo Mesa on unnamed road 0.1 mi SW of Halcyon Rd at the railroad crossing, just south of Arroyo Grande 15 Comment
  UCR131917  Apium graveolens George K. Helmkamp 2003-8-18 8090 San Luis Obispo Central Coast, Oceano; south side of Oceano Airport along an unnamed road 6 Comment
  UCR132035  Sonchus oleraceus George K. Helmkamp 2003-7-31 8070 San Luis Obispo Central Coast, west edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road 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
  UCR132056  Epilobium ciliatum subsp. ciliatum George K. Helmkamp 2003-7-31 8056 San Luis Obispo Central Coast, west edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road 15 Comment
  UCR132762  Plantago lanceolata George K. Helmkamp 2003-7-29 8032 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR134390  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 2001-4-29 6583 San Luis Obispo Irish Hills, Clark Valley Rd., 3.8 mi south of Los Osos Valley Rd., east of Los Osos 213 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
  UCR134411  Lonicera involucrata var. ledebourii George K. Helmkamp, E. A. Helmkamp 2001-4-29 6571 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
  UCR134413  Dendromecon rigida George K. Helmkamp, E. A. Helmkamp 2001-4-29 6573 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
  UCR134418  Lotus wrangelianus George K. Helmkamp, E. A. Helmkamp 2001-4-29 6577 San Luis Obispo Irish Hills, Clark Valley Rd., 3.8 mi south of Los Osos Valley Rd., east of Los Osos 213 Comment
  UCR134419  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2001-4-29 6579 San Luis Obispo Irish Hills, Clark Valley Rd., 3.8 mi south of Los Osos Valley Rd., east of Los Osos 213 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
  UCR134691  Stephanomeria virgata subsp. virgata George K. Helmkamp 2003-9-21 8161 San Luis Obispo Central Coast, Los Berros Rd, 0.9 mi SE of El Campo Rd., SE of Arroyo Grande 46 Comment
  UCR134693  Bidens pilosa George K. Helmkamp 2003-9-21 8163 San Luis Obispo Central Coast, Los Berros Rd, 0.9 mi SE of El Campo Rd., SE of Arroyo Grande 46 Comment
  UCR134698  Xanthium spinosum George K. Helmkamp 2003-9-19 8153 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134699  Cyperus eragrostis George K. Helmkamp 2003-9-19 8154 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR135958  Tetragonia tetragonoides George K. Helmkamp 2003-8-16 8080 San Luis Obispo Central Coast, Nipomo Mesa at Willow Road, 0.5 mi east of Calif. Hwy 1, near Black Lake golf course 76 Comment
  UCR135959  Centaurea melitensis George K. Helmkamp 2003-8-16 8083 San Luis Obispo Central Coast, Nipomo Mesa at Willow Road, 0.5 mi east of Calif. Hwy 1, near Black Lake golf course 76 Comment
  UCR13790  Horkelia californica George K. Helmkamp 1973-8-8 s.n. San Luis Obispo Central Coast, Morro Bay, Baywood Park, hillside c. 1 mi from ocean 3 Comment
  UCR13916  Solidago californica George K. Helmkamp 1973-8-8 s.n. San Luis Obispo Central Coast, Morro Bay, Baywood Park, hillside c. 1 mi from ocean 3 Comment
  UCR140084  Medicago polymorpha George K. Helmkamp 2004-2-10 8270 San Luis Obispo Central Coast, southeast of Oceano along Halcyon Rd., 0.2 mi east of Mesa View Dr. 76 Comment
  UCR140132  Salix lasiolepis George K. Helmkamp 2004-2-6 8240 San Luis Obispo Central Coast, entrance to Oso Flaco Lake, SW of Nipomo 6 Comment
  UCR140154  Solanum douglasii George K. Helmkamp 2004-2-11 8281 San Luis Obispo Central Coast, Nipomo Mesa, Willow Rd, 0.6 mi east of Calif. Hwy 1 125 Comment
  UCR140467  Eschscholzia californica George K. Helmkamp 2004-3-15 8379 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
  UCR15012  Sanicula hoffmannii George K. Helmkamp 1976-5-23 s.n. San Luis Obispo Avila Rd turnoff from US Hwy 101 32 Comment
  UCR15571  Astragalus curtipes George K. Helmkamp 1978-6-3 s.n. San Luis Obispo Central Coast, Baywood Park, Morro Bay area 30 Comment
  UCR158427  Lonicera involucrata var. ledebourii George K. Helmkamp 2004-6-15 8647 San Luis Obispo Central Coast, East entrace to Oso Flaco Lake 9 Comment
  UCR158741  Silene gallica George K. Helmkamp, E. A. Helmkamp 2005-4-17 9371 San Luis Obispo Central Coast, Corbett Canyon, 2.3 miles north of Calif. Hwy 227 in Arroyo Grande 81 Comment
  UCR158743  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2005-4-17 9373 San Luis Obispo Central Coast, Corbett Canyon, 2.3 miles north of Calif. Hwy 227 in Arroyo Grande 81 Comment
  UCR158745  Ericameria linearifolia George K. Helmkamp, E. A. Helmkamp 2005-4-22 9418 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
  UCR159230  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 2005-4-22 9386 San Luis Obispo Inner South Coast Ranges, Carrizo Hwy at Mile-19 (Calif. Hwy 58, east of Santa Margarita near Wilson Corner) 470 Comment
  UCR159992  Daucus pusillus George K. Helmkamp, E. A. Helmkamp 2005-6-12 9667 San Luis Obispo South Central Coast Range, Along Calif. Highway 229 (road to Creston), 5.5 mi N of Calif. Highway 58; beside West Branch of Huerhuero Creek 363 Comment
  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
  UCR160384  Clarkia bottae George K. Helmkamp, E. A. Helmkamp 2005-6-9 9618 San Luis Obispo Central Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 9.6 miles NE of Huasna Townsite Road 378 Comment
  UCR160562  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2005-6-7 9548 San Luis Obispo Outer South Coast Ranges, along Huasna Road, 1.3 mile west of Huasna Townsite Road 305 Comment
  UCR160734  Penstemon centranthifolius George K. Helmkamp, E. A. Helmkamp 2005-6-7 9557 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
  UCR160970  Clarkia speciosa subsp. speciosa George K. Helmkamp, E. A. Helmkamp 2005-6-12 9659 San Luis Obispo South Central Coast Range, Along Calif. Highway 229 (road to Creston), 5.5 mi N of Calif. Highway 58; beside West Branch of Huerhuero Creek 363 Comment
  UCR161099  Centaurea melitensis George K. Helmkamp, E. A. Helmkamp 2005-6-12 9648 San Luis Obispo Central Coast Range, along Calif. Hwy 58 (Carrizo Hwy), 22.2 miles east of Santa Margarita; near Camatta Creek 552 Comment
  UCR161285  Pityrogramma triangularis var. triangularis George K. Helmkamp, E. A. Helmkamp 2005-3-8 9044 San Luis Obispo Central Coast Hills, Prefumo Canyon, north side of Irish Hills. 1.1 mi SW of Los Osos Valley Road along Prefumo Canyon Road 98 Comment
  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
  UCR161332  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2005-3-5 9007 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
  UCR161354  Lomatium caruifolium var. caruifolium George K. Helmkamp, E. A. Helmkamp 2005-3-8 9071 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon Road, 4.6 mi west of Los Osos Valley Road 316 Comment
  UCR161925  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2005-3-1 8977 San Luis Obispo South Outer Coast Ranges, Santa Lucia Range NE of Lake Lopez; 0.3 mi. N of Hi Mountain Road along Upper Lopez Canyon Road 311 Comment
  UCR161927  Lupinus truncatus George K. Helmkamp, E. A. Helmkamp 2005-3-1 9002 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
  UCR163127  Arctostaphylos glandulosa subsp. mollis George K. Helmkamp 1993-3-5 s.n. San Luis Obispo Central Coast, just north of Montana de Oro State Park 30 Comment
  UCR163608  Salvia columbariae George K. Helmkamp, E. A. Helmkamp 2005-3-30 9268 San Luis Obispo Outer South Coast Ranges, La Panza Range; Pozo Road, 6.5 mi NE of Hi Mountain Road, [c. 1 mi (airline) SW of Pozo Summit] 665 Comment
  UCR163609  Microseris lindleyi George K. Helmkamp, E. A. Helmkamp 2005-3-25 9202 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
  UCR163630  Emmenanthe penduliflora George K. Helmkamp, E. A. Helmkamp 2005-3-30 9265 San Luis Obispo Outer South Coast Ranges, La Panza Range; Pozo Road, 6.5 mi NE of Hi Mountain Road, [c. 1 mi (airline) SW of Pozo Summit] 665 Comment
  UCR163636  Sanicula bipinnata George K. Helmkamp, E. A. Helmkamp 2005-3-25 9218 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
  UCR18616  Haplopappus squarrosus George K. Helmkamp 1974-9-28 s.n. San Luis Obispo