Search Results — 2000 specimen records retrieved (1971 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-BC226938  Holodiscus discolor George K. Helmkamp; William Barnes 2010-9-4 16942 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-BC520331  Eurybia integrifolia George K. Helmkamp; Amy Barnes 2012-8-12 19618 Alpine Northern Sierra Nevada Mountains: Woods Lake Road, 0.8 mi SE of jct with CA-88 and beside Woods Creek 2285 Comment
  CLARK-A1045-1111  Horkelia fusca subsp. parviflora George K. Helmkamp 1977-9-1 VI Alpine Sierra Nevada 2 miles east of Luther Pass, corner of US Highway 88 and US Highway 89; roadside; 7300 ft; Freel Peak 7.5'Q Comment
  CLARK-A1045-1116  Mimulus primuloides var. pilosellus George K. Helmkamp 1977-9-1 V Alpine Sierra Nevada sphagnum bog; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1120  Gentiana simplex George K. Helmkamp 1977-9-1 V Alpine Sierra Nevada sphagnum bog; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1141  Thalictrum sparsiflorum George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1146  Sidalcea oregana George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1161  Gentiana simplex George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1163  Spiranthes romanzoffiana George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1166  Epilobium brevistylum George K. Helmkamp 1977-9-1 VC Alpine Sierra Nevada roadside seep; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1171  Scirpus microcarpus George K. Helmkamp 1977-9-3 XI Alpine Sierra Nevada sphagnum bog; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1176  Kelloggia galioides George K. Helmkamp 1977-9-3 XI Alpine Sierra Nevada sphagnum bog; ; Freel Peak 7.5'Q 2346 Comment
  CLARK-A1045-1183  Lupinus andersonii George K. Helmkamp 1977-9-1 VB Alpine Sierra Nevada dry slope under pines; ; Freel Peak 7.5'Q 2346 Comment
  OBI82113  Lepidium virginicum var. pubescens George K. Helmkamp, Belinda Pesheck 2013-7-14 21053 Alpine Northern Sierra Nevada Mountains: off Blue Lakes Road, 9.4 miles south of CA-88, between a private dirt road and Charity Valley Creek 2409 Comment
  RSA0035728  Lupinus argenteus var. palmeri George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-14 22194 Alpine along CA-89, 1.3 miles southwest of Monitor Pass 2503 Comment
  RSA0042769  Ambrosia acanthicarpa George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-14 22169 Alpine Northern Sierra Nevada Mountains: Along CA-89, 0.6 mile south of Markleeville. 1691 Comment
  RSA0053903  Bromus inermis subsp. inermis George K. Helmkamp, Belinda Pesheck 2013-7-14 21050 Alpine off Blue Lakes Road, 9.4 miles south of CA-88, between a private dirt road and Charity Valley Creek 2409 Comment
  RSA746980  Eriogonum spergulinum var. reddingianum George K. Helmkamp, E. A. Helmkamp 2008-8-8 13974 Alpine Along CA-89 at Grass Lake, 0.9 mile west of Luther Pass 2354 Comment
  RSA747026  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2007-7-17 12536 Alpine Blue Lake Road, about 9 miles south of its junction with CA-88 2498 Comment
  SD197741  Bassia hyssopifolia G. K. Helmkamp, E. A. Helmkamp 2008-8-8 13979 Alpine Northern Sierra Nevada Mountains, along CA-89 at Grass Lake, 0.9 mile west of Luther Pass. 2353 Comment
  SD212652  Monardella odoratissima subsp. pallida G. K. Helmkamp, E. A. Helmkamp 2006-8-3 11112 Alpine Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake. 2509 Comment
  SD236201  Hieracium albiflorum G. K. Helmkamp, E. A. Helmkamp 2008-7-16 13826 Alpine Northern Sierra Nevada Mountains: Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  SD236250  Rorippa nasturtium-aquaticum G. K. Helmkamp, E. A. Helmkamp 2008-7-22 13897 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
  SD236289  Lupinus lepidus var. confertus G. K. Helmkamp, E. A. Helmkamp 2008-7-22 13855 Alpine Eastern Sierra Nevada Mountains: Blue Lake Road just southeast of its junction with CA-88. 2180 Comment
  SD243135  Lupinus argenteus George K. Helmkamp, E. A. Helmkamp 2011-8-19 18136 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 1.4 miles north of its junction with Tamarack Road (Carson Pass 7.5Q) 2506 Comment
  SD247307  Symphyotrichum bracteolatum George K. Helmkamp, E. A. Helmkamp 2013-8-14 22180 A Alpine Northern Sierra Nevada Mountains: along CA-89, 0.1 mile east of its junction with CA-4, Monitor Creek. 1747 Comment
  SEINET1908454  Lupinus lepidus var. confertus G. K. Helmkamp, E. A. Helmkamp 2008-1 13794 Alpine Northern Sierra Nevada Mountains: Woods Lake Road, 0.1 mile south of its junction with CA-88. 2457 Comment
  SEINET1908775  Agastache urticifolia G. K. Helmkamp, E. A. Helmkamp 2008-1 13792 Alpine North Sierra Nevada Mountains: Woods Lake Road, 0.1 mile south of its junction with CA-88(Caples Lake 7.5' Q) 2457 Comment
  SEINET2441833  Nothocalais alpestris George K. Helmkamp, E. A. Helmkamp 2009-8-4 15391 Alpine Sierra Nevada Mountains: along CA-4 at the trailhead for Ebbetts Pass, 12.8 miles southwest of the CA-4 junction with CA-89. 2637 Comment
  SEINET2442021  Rosa bridgesii George K. Helmkamp, E. A. Helmkamp 2009-8-4 15369 Alpine Sierra Nevada Mountains: along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River (Heenan Lake 7.5').; 0 1786 Comment
  SEINET3242998  Pinus jeffreyi G. K. Helmkamp, E. A. Helmkamp 2008-1 14161 Alpine Northern Sierra Nevada Mountains: along CA-89. 0.1 mile north of Markleeville (Markleeville 7.5 Q. 1686 Comment
  SEINET5586216  Panicum capillare George K. Helmkamp, Elizabeth Helmkamp 2013-1 22170 Alpine Northern Sierra Nevada Mountains: along CA-89, 0.6 mile south of Markleeville. 1691 Comment
  SEINET5586217  Artemisia tridentata subsp. vaseyana George K. Helmkamp, Elizabeth Helmkamp 2013-1 22171 Alpine Northern Sierra Nevada Mountains: along CA-89, 0.6 mile south of Markleeville. 1691 Comment
  SEINET9260795  Rumex acetosella George K. Helmkamp, Amy Barnes 2013-1 22323 Alpine Northern Sierra Nevada Mountains: northern edge of Mosquito Lake along CA-4/Ebbetts Pass road (Pacific Valley 7.5' Q) 2454 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
  UC2015620  Lupinus lepidus var. sellulus G. Helmkamp 1995-9-23 3 -22 Alpine West side of Sonora Pass just beyond the Mono County line. Comment
  UCD100366  Calyptridium monospermum G. K. Helmkamp; E. A. Helmkamp 2006-9-12 11391 Alpine Northern Sierra Nevada Mountains: along Hwy. CA-89, 1.5 miles east of the El Dorado County line, general vicinity of Luther Pass. 2186 Comment
  UCD100374  Calyptridium monospermum G. K. Helmkamp; E. A. Helmkamp 2007-7-17 12534 Alpine Northern Sierra Nevada Mountains: Blue Lake Road, about 9 miles south of its junction with CA-88. 2498 Comment
  UCD101246  Eriogonum spergulinum var. reddingianum G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12703 Alpine Northern Sierra Nevada Mountains; Woods Lake Road, 0.1 mile south of its junction with CA-88. 2500 Comment
  UCD103662  Chamerion angustifolium subsp. circumvagum G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11116 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
  UCD109455  Lupinus polyphyllus var. burkei G. K. Helmkamp 2007-7-7 12482 Alpine Northern Sierra Nevada Mountains: along CA-89, 1.3 miles north of its junction with CA-88. 2262 Comment
  UCD122997  Castilleja miniata subsp. miniata G. K. Helmkamp 2007-7-7 12485 Alpine Northern Sierra Nevada Mountains: along CA-89, 1.3 miles north of its junction with CA-88. 2262 Comment
  UCD127862  Perideridia parishii subsp. latifolia G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11137 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
  UCD128084  Sphenosciadium capitellatum G. K. Helmkamp; E. A. Helmkamp 2006-9-12 11405 Alpine Northern Sierra Nevada Mountains: west end of Caples Lake at a dam; alongside Hwy CA-88. 2335 Comment
  UCD128710  Ambrosia acanthicarpa G. K. Helmkamp; E. A. Helmkamp 2006-9-12 11396 Alpine Northern Sierra Nevada Mountains: west end of Caples Lake at a dam; alongside Hwy CA-88. 2335 Comment
  UCD129172  Artemisia michauxiana G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12685 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
  UCD132273  Eucephalus breweri G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11142 Alpine Northern Sierra Nevada Mountains. Wood's Lake Road, 0.3 mile N of the parking area for Wood's Lake. Wood's Creek. 2509 Comment
  UCD137383  Lonicera involucrata var. involucrata G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12694 Alpine Northern Sierra Nevada Mountains. Woods Lake Road south of CA-88 at the picnic area just north of the lake. 2470 Comment
  UCR103536  Mimulus tilingii George K. Helmkamp, E. A. Helmkamp 1997-9-11 2401 Alpine Sierra Nevada Mountains, 0.2 mi northwest of Sonora Pass along CA Hwy 108 2912 Comment
  UCR103538  Lactuca serriola George K. Helmkamp, E. A. Helmkamp 1997-9-9 2300 Alpine Sierra Nevada Mtns., junction of Calif. Hwy 89 and Calif. Hwy 4, south of Markleeville 1799 Comment
  UCR103820  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 1997-9-11 2400 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
  UCR114898  Monardella odoratissima George K. Helmkamp, E. A. Helmkamp 1997-9-9 2290 Alpine Sierra Nevada Mtns., Ebbetts Pass along Calif. Hwy [4] 2652 Comment
  UCR122314  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 1997-9-9 2311 Alpine Sierra Nevada Mountains, Leviathan Lookout Road at the S and W sides of Leviathan Peak, NW of Monitor Pass 2683 Comment
  UCR123972  Crepis acuminata George K. Helmkamp, E. A. Helmkamp 2001-7-6 6839 A Alpine Sierra Nevada Mountains, Calif. Hwy 89, 7.1 mi west of US-395 2470 Comment
  UCR176206  Castilleja miniata subsp. miniata George K. Helmkamp, E. A. Helmkamp 2006-8-3 11105 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176208  Orthocarpus cuspidatus subsp. cryptanthus George K. Helmkamp, E. A. Helmkamp 2006-8-3 11102 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176477  Potentilla gracilis var. elmeri George K. Helmkamp, E. A. Helmkamp 2006-8-3 11140 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176492  Trifolium longipes var. nevadense George K. Helmkamp, E. A. Helmkamp 2006-8-3 11144 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR178717  Holodiscus microphyllus var. microphyllus George K. Helmkamp, E. A. Helmkamp 2006-8-30 11292 Alpine Northern Sierra Nevada Mountains, Woods Lake, south of Calif. Hwy 88 and generally SE of Caples Lake 2521 Comment
  UCR178739  Polemonium californicum George K. Helmkamp, E. A. Helmkamp 2006-8-30 11309 Alpine Northern Sierra Nevada Mountains, Woods Lake, south of Calif. Hwy 88 and generally SE of Caples Lake 2521 Comment
  UCR188512  Pinus contorta subsp. murrayana George K. Helmkamp, E. A. Helmkamp 2007-7-17 12529 Alpine Northern Sierra Nevada Mountains, Blue Lake Road, 2.7 miles south of its junction with CA-88 2238 Comment
  UCR189142  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2007-7-17 12552 Alpine Northern Sierra Nevada Mountains, Blue Lake Road about nine miles south of its junction with CA-88 2511 Comment
  UCR189192  Antennaria corymbosa George K. Helmkamp 2007-7-7 12490 Alpine Northern Sierra Nevada Mountains, Blue Lakes [Forestdale] Road, 0.2 mile south of its junction with CA-88 2378 Comment
  UCR189435  Polemonium pulcherrimum subsp. pulcherrimum George K. Helmkamp, E. A. Helmkamp 2007-8-4 12697 Alpine Northern Sierra Nevada Mountains, Woods Lake Road south of CA-88 at the picnic area just north of the lake 2470 Comment
  UCR189443  Thalictrum fendleri var. fendleri George K. Helmkamp, E. A. Helmkamp 2007-8-4 12688 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
  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
  UCR196795  Tetradymia canescens George K. Helmkamp, E. A. Helmkamp 2008-7-22 13887 Alpine Eastern Sierra Nevada Mountains, Carson River road, 0.4 mile east of its west junction with CA-88 1713 Comment
  UCR196804  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2008-7-16 13792 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR196869  Lupinus lepidus var. confertus George K. Helmkamp, E. A. Helmkamp 2008-7-22 13885 Alpine Eastern Sierra Nevada Mountains, Carson River road, 0.4 mile east of its west junction with CA-88 1713 Comment
  UCR196935  Carex athrostachya George K. Helmkamp, E. A. Helmkamp 2008-7-16 13812 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR196947  Elymus elymoides George K. Helmkamp, E. A. Helmkamp 2008-7-16 13803 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR196954  Agrostis idahoensis George K. Helmkamp, E. A. Helmkamp 2008-7-22 13852 Alpine Eastern Sierra Nevada Mountains, Blue Lake Road just southeast of its junction with CA-88 2180 Comment
  UCR197034  Centaurea diffusa George K. Helmkamp, E. A. Helmkamp 2008-7-22 13900 Alpine Eastern Sierra Nevada Mountains, Carson River Road at its east junction with CA-88 and Diamond Valley Road 1677 Comment
  UCR197040  Potentilla glandulosa subsp. nevadensis George K. Helmkamp, E. A. Helmkamp 2008-7-16 13830 Alpine Northern Sierra Nevada Mountains, along CA-88, 0.8 mile northeast of Carson Pass 2534 Comment
  UCR202551  Machaeranthera canescens subsp. canescens George K. Helmkamp, E. A. Helmkamp 2008-9-22 14162 Alpine Northern Sierra Nevada Mountains, Hope Valley along Blue Lake Road, 0.1 mile south of the junction with CA-88 2180 Comment
  UCR202559  Centaurea cyanus George K. Helmkamp, E. A. Helmkamp 2008-9-22 14159 Alpine Northern Sierra Nevada Mountains, along CA-89. 0.1 mile north of Markleeville 1686 Comment
  UCR202665  Epilobium brachycarpum George 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
  UCR202679  Chrysothamnus nauseosus subsp. albicaulis George K. Helmkamp, E. A. Helmkamp 2008-9-22 14143 Alpine Northern Sierra Nevada Mountains, small road spur just northeast of Carson Pass 2599 Comment
  UCR202758  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2008-8-8 14005 Alpine Northern Sierra Nevada Mountains, along Blue Lake Road, 9.2 miles south of its junction with CA-88 2512 Comment
  UCR202762  Arabis George K. Helmkamp, E. A. Helmkamp 2008-8-8 14002 Alpine Northern Sierra Nevada Mountains, along Blue Lake road, 8.5 miles south of its junction with CA-88 2497 Comment
  UCR202915  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2008-8-8 14008 Alpine Northern Sierra Nevada Mountains, along Blue Lake Road, 9.2 miles south of its junction with CA-88 2512 Comment
  UCR206601  Wyethia mollis George K. Helmkamp, Ann Kerchner 2009-7-25 15299 Alpine Sierra Nevada Mountains, Blue Lakes Road, 8.5 miles south of its junction with CA-88 2491 Comment
  UCR206678  Phlox diffusa George K. Helmkamp, Ann Kerchner 2009-7-25 15300 Alpine Sierra Nevada Mountains, Blue Lakes Road, 8.5 miles south of its junction with CA-88 2491 Comment
  UCR209690  Lupinus argenteus var. montigenus George K. Helmkamp, E. A. Helmkamp 2009-8-4 15360 Alpine Sierra Nevada Mountains, along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River 1787 Comment
  UCR209705  Artemisia tridentata subsp. vaseyana George K. Helmkamp, E. A. Helmkamp 2009-8-4 15372 Alpine Sierra Nevada Mountains, along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River 1787 Comment
  UCR219276  Potentilla glandulosa subsp. nevadensis George K. Helmkamp, E. A. Helmkamp 2010-7-13 16549 Alpine Northern Sierra Nevada Mountains, Red Vista Road, 0.2 mile west of its junction with CA-88; south side of Red Lake 2412 Comment
  UCR229414  Phacelia hydrophylloides George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18090 Alpine Northern Sierra Nevada Mountains, unnamed dirt road on the east side of CA-4 and about 0.1 mile northeast of the Calaveras Co. line, near Bear Valley 2165 Comment
  UCR229446  Valeriana californica George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18073 Alpine Northern Sierra Nevada Mountains, south side of Bear Valley Village, along CA Hwy 4 2169 Comment
  UCR234544  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2011-8-19 18155 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 2.6 miles north of its junction with Tamarack Road 2436 Comment
  UCR234557  Trifolium longipes var. nevadense George K. Helmkamp, E. A. Helmkamp 2011-8-19 18145 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 1.4 miles north of its junction with Tamarack Road 2506 Comment
  UCR234563  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2011-8-19 18137 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 1.4 miles north of its junction with Tamarack Road 2506 Comment
  UCR234594  Phacelia hydrophylloides George K. Helmkamp, E. A. Helmkamp 2011-8-19 18124 Alpine Northern Sierra Nevada Mountains, Tamarack Road, 0.1 mile east of its junction with Blue Lakes Road 2485 Comment
  UCR234600  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 2296 Comment
  UCR235315  Holodiscus discolor George K. Helmkamp, William Barnes 2010-9-4 16942 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
  UCR245549  Trifolium monanthum subsp. monanthum George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22239 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
  UCR245591  Thlaspi arvense George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22202 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR245847  Elymus trachycaulus subsp. trachycaulus George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22201 Alpine Northern Sierra Nevada Mountains, along CA-89, 1.0 mile east of Monitor Pass then 0.1 mile southwest on an unnamed dirt road 2486 Comment
  UCR247246  Melilotus albus George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22179 Alpine Northern Sierra Nevada Mountains, along CA-89, 0.6 mile south of Markleeville 1691 Comment
  UCR247248  Asclepias fascicularis George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22174 Alpine Northern Sierra Nevada Mountains, along CA-89, 0.6 mile south of Markleeville 1691 Comment
  UCR248692  Epilobium George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22223 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR252991  Carex nebrascensis George K. Helmkamp, Amy Barnes 2013-9-23 22329 Alpine Northern Sierra Nevada Mountains, northern edge of Mosquito Lake along CA-4/Ebbetts Pass road 2454 Comment
  UCR253095  Juncus chlorocephalus George K. Helmkamp, Belinda Pesheck 2013-7-14 21072 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 0.35 mile south of its junction with Tamarack/Sunset Lake Road 2468 Comment
  UCR257761  Juncus phaeocephalus var. paniculatus George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19696 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, at the west side of Carson Spur, 1.7 air mi west (278 deg. ) of Kirkwood 2436 Comment
  UCR257783  Epilobium glaberrimum subsp. glaberrimum George K. Helmkamp, Amy Barnes 2012-8-12 19623 Alpine Northern Sierra Nevada Mountains, along CA-89/Carson Pass Hwy in West Carson Canyon, 1.4 miles east of the junction with CA-88 2034 Comment
  UCR257811  Erigeron coulteri George K. Helmkamp, Amy Barnes 2012-8-12 19643 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
  UCR257837  Aster integrifolius George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19722 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
  UCR257942  Carex douglasii George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19719 Alpine Northern Sierra Nevada Mountains, along CA-88 at the Red Vista Rd. junction, east end of Carson Pass near Red Lake 2619 Comment
  UCR258990  Ericameria nauseosa var. speciosa George K. Helmkamp, Amy Barnes 2014-9-16 23072 Alpine Eastern Sierra Nevada Mountains, Paynesville, junction of Chambers Lane and Diamond Valley Road along West Fork Carson River 1593 Comment
  UCR261624  Kochia scoparia George K. Helmkamp, Amy Barnes 2014-9-16 23099 Alpine Eastern Sierra Nevada Mountains, Carson Valley, 1.35 mi. NE of Paynesville at junction of Fredericksburg Lane and US-88 (Carson Pass Hwy), 2.8 miles northeast of Woodfords 1340 Comment
  UCR261991  Ericameria nauseosa var. speciosa George K. Helmkamp, Amy Barnes 2014-10-10 23151 Alpine Northern Sierra Nevada Mountains, along CA-89, 0.6 mile south of Luther Pass 2287 Comment
  UCR87680  Arabis holboellii var. pinetorum George K. Helmkamp, E. A. Helmkamp 1995-6-23 95- 8 -2 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
  UCR87843  Collomia tinctoria George K. Helmkamp, E. A. Helmkamp 1995-6-23 s.n. Alpine Sierra Nevada Mtns, Calif. Hwy 89, 6.0 mi east of the junction with Calif. Hwy 4 on the way to Monitor Pass. Slope above Monitor Creek 2200 Comment
  UCR88324  Ericameria suffruticosa George K. Helmkamp 1995-9-23 3- 6 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  UCR88329  Helenium hoopesii George K. Helmkamp 1995-9-23 3 23 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  CAS-BOT-BC173259  Delphinium nuttallianum G. K. Helmkamp; E. A. Helmkamp 2008-6-23 13711 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
  CAS-BOT-BC196034  Lupinus albifrons var. collinus G. K. Helmkamp; E. A. Helmkamp 2008-5-8 13430 Amador Sierra Nevada Mountains Foothills: along CA-26, 1.0 mile west of the Calaveras County line 709 Comment
  CAS-BOT-BC227110  Comandra umbellata subsp. californica George K. Helmkamp; E. A. Helmkamp 2011-5-10 17248 Amador Northern Sierra Nevada Mountains Foothills: along Sutter Creek near Sutter Creek Rd., 2.9 air miles NE (68 deg. ) of town of Sutter Creek 412 Comment
  CAS-BOT-BC228550  Sidalcea glaucescens George K. Helmkamp; William Barnes 2010-9-4 16948 Amador Northern Sierra Nevada Mountains: Mormon Emigrant Trail, 0.2 mile west of its junction with CA-88 2232 Comment
  CAS-BOT-BC438797  Chenopodium G. K. Helmkamp; E. A. Helmkamp 2007-9-4 12894 Amador Northern Sierra Nevada Mountains, west slope: Along CA-88 3.2 miles west of Hams Station along CA-88, just east of Cooks Station. 1527 Comment
  CAS-BOT-BC438808  Hosackia oblongifolia var. oblongifolia George K. Helmkamp; Elizabeth Helmkamp 2013-7-6 20967 Amador Northern Sierra Nevada Mountains: Bear River Road at the south end of the dam for Lower Bear River Reservoir. 1784 Comment
  CAS-BOT-BC444034  Agrostis G. K. Helmkamp; E. A. Helmkamp 2007-8-16 12745 Amador Northern Sierra Nevada Mountains: along Hwy CA-88, 1.0 mile south of the junction with Mormon Emigrant Trail. 662 Comment
  CAS-BOT-BC444035  Agrostis stolonifera George K. Helmkamp; E. A. Helmkamp 2007-8-16 12770 Amador Northern Sierra Nevada Mountains: along Hwy CA-88, 0.9 mile northeast of the junction with Bear River Reservoir. 632 Comment
  CAS-BOT-BC518737  Eriophyllum lanatum var. achilleoides George K. Helmkamp; E. A. Helmkamp 2012-6-26 19273 Amador Northern Sierra Nevada Mountains: Panther Creek Road, 4.1 mi S of its junction with CA-88, S of Hwy 88/Carson Pass Hwy, and W of Lower Bear Reservoir 1518 Comment
  CDA25218  Oenothera elata subsp. hirsutissima G. K. Helmkamp, E. A. Helmkamp 2007-10-13 13097 Amador Central Valley / Northern Sierra Nevada Foothills; Along CA-124, 0.3 mile north of its junction with CA-88 and south of Ione. Comment
  RSA0013371  Gilia capitata George K. Helmkamp, E. A. Helmkamp 2010-9-1 16883 Amador Northern Sierra Nevada Mountains: along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, e. 2.75 mi NNW of Upper Bear River Reservoir. 2162 Comment
  RSA0035670  Euphorbia oblongata George K. Helmkamp, Mary Alice Barnes 2013-4-24 20387 Amador Along CA-26 (Red Corral/West Point-Pioneer Rd.), 0.7 mile west of the crossing over North Fork Mokelumne River 704 Comment
  RSA0039239  Arabis microphylla var. microphylla George K. Helmkamp, Elizabeth A. Helmkamp 2013-7-10 21014 Amador Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  RSA0039245  Holocarpha virgata subsp. virgata George K. Helmkamp, Elizabeth A. Helmkamp 2013-9-13 22296 Amador Fiddletown Road, 1.4 miles southeast of Fiddletown 588 Comment
  RSA0047366  Mimulus guttatus George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-11 22155 Amador Sutter Creek-Volcano Road, 11.3 miles northeast of the town of Sutter Creek 582 Comment
  RSA0049983  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2012-6-6 19141 Amador Panther Creek Road, 6.2 miles south of its junction with CA-88, 5.9 mi. SW (245 deg ) of Bear River Reservoir dam 1438 Comment
  RSA0062469  Collomia George K. Helmkamp, Elizabeth A. Helmkamp 2013-7-6 20956 Amador Panther Creek Road, 0.6 mile south of its junction with Hwy CA-88. 1633 Comment
  RSA0062471  Galium trifidum var. pusillum George K. Helmkamp, Elizabeth A. Helmkamp 2013-7-6 20970 Amador Bear River Road at the south end of the dam for Lower Bear River Reservoir. 1784 Comment
  RSA0070100  Blepharipappus scaber George K. Helmkamp, Amy Barnes 2014-5-8 22838 Amador Tonzi Road, 0.4 mile east of its junction with CA-124, 4.5 air miles NE (35 deg ) of Ione. 188 Comment
  RSA0093480  Madia exigua George K. Helmkamp, E. A. Helmkamp 2012-6-26 19281 Amador Northern Sierra Nevada Mountains. Panther Creek Road, 8.0 miles south of its junction with CA-88, along East Panther Creek. 1345 Comment
  RSA0094837  Triteleia hyacinthina George K. Helmkamp, Amy Barnes 2014-5-8 22853 Amador Sacramento Valley/Sierra Nevada Foothills. along CA-104, 1.2 miles southeast of Ione. 146 Comment
  RSA715278  Valerianella locusta George K. Helmkamp, E. A. Helmkamp 2006-5-9 10341 Amador Northern Sierra Nevada foothills: Grass Valley Creek, 1.2 miles east of Pine Grove along Hwy CA-88. 762 Comment
  RSA746968  Atriplex canescens subsp. canescens George K. Helmkamp, E. Helmkamp 2008-10-30 14303 Amador along CA-49, 0.2 mile south of Plymouth 314 Comment
  RSA752663  Lathyrus sulphureus George K. Helmkamp, E. A. Helmkamp 2008-5-4 13395 Amador along Tiger Creek Road, 0.3 mi east of the turnoff to Tiger Creek Reservoir 774 Comment
  RSA774002  Quercus douglasii George K. Helmkamp, E. A. Helmkamp 2009-10-11 15680 Amador Willow Creek Road just south of its junction with CA-16, 3.3 mi. SW (235 ) of Plymouth 192 Comment
  RSA785397  Clarkia heterandra George K. Helmkamp, E. A. Helmkamp 2010-6-23 16346 Amador Sierra Nevada Mtns Foothills: Sutter Creek Road, 7.2 mi NE of its junction with old CA-49 in Sutter Creek village. 473 Comment
  RSA795032  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2011-8-6 17964 Amador Ellis Road, 2.1 miles south of its junction with CA-88. 1794 Comment
  SBBG120618  Trifolium glomeratum G. K. Helmkamp with E. A. Helmkamp 2006-5-6 10302 Amador St Hwy 49, 0.3 mi S of Drytown 226 Comment
  SBBG128994  Aconogonon phytolaccifolium G. K. Helmkamp, E. A. Helmkamp 2012-7-14 19416 Amador Tragedy Spring, near Carson Pass Hwy, along Tradedy Spring Rd 0.3 mi E of its jct with CA 88 2421 Comment
  SBBG129000  Ipomopsis aggregata subsp. bridgesii G. K. Helmkamp, E. A. Helmkamp 2012-7-14 19392 Amador edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 mi N of Silver Lake 2317 Comment
Read comments
May 8 2017
  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
  SD236218  Madia gracilis G. K. Helmkamp 2008-6-17 13672 Amador Northern Sierra Nevada Mountains: Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 (Peddler Hill 7.5'Q) 1990 Comment
  SD236284  Acmispon nevadensis G. K. Helmkamp 2008-6-17 13678 Amador Northern Sierra Nevada Mountains: Bear River Reservoir Road, 0.1 mile south of its junction with CA-88. 1990 Comment
  SD236399  Heteromeles arbutifolia G. K. Helmkamp, Elizabeth Helmkamp 2005-9-1 9839 Amador Northern Sierra Nevada Foothills: Climan road at Taves Road, 0.3 mi W of CA Highwayy 88 (ESE of Sacramento and ca. 13 miles NE of Jackson. 701 Comment
  SD237334  Lapsana communis G. K. Helmkamp, E. A. Helmkamp 2010-6-23 16343 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
  SD237429  Acmispon nevadensis var. nevadensis G. K. Helmkamp, E. A. Helmkamp 2009-8-6 15403 A Amador Sierra Nevada Mountains: Panther Creek Road, 0.4 mile south of its junction with CA-88; jct. is 4.0 miles NE of Cook's Station. 1590 Comment
  SD240799  Platanthera sparsiflora George K. Helmkamp, E. A. Helmkamp 2012-7-14 19414 Amador Northern Sierra Nevada Mountains: Tragedy Spring, near Carson Pass Hwy, along Tragedy Spring Road 0.3 mile east of its junction with CA-88 (Tragedy Spring 7.5'Q) 2421 Comment
  SD247310  Symphyotrichum spathulatum var. spathulatum George K. Helmkamp, E. A. Helmkamp 2013-7-10 21016 Amador Northern Sierra Nevada Mountains: Plasse Road at the southern end of Silver Lake, off Highway 88/Carson Pass Highway. 2191 Comment
  SD247437  Vicia villosa subsp. villosa George Helmkamp, Elizabeth Helmkamp 2013-8-11 22161 Amador Sierra Nevada Mountains Foothills: along CA-49, just northeast of its juncction with Randolph Court, c. 1 km S of Plymouth (Amador City 7.5'Q) 326 Comment
  SD247509  Penstemon roezlii George K. Helmkamp, Elizabeth A. Helmkamp 2013-7-10 21003 Amador Northern Sierra Nevada Mountains: Plasse Road toward Silver Lake, 0.3 mile south of CA-88/Carson Pass Hwy (Tragedy Spring 7.5'Q) 2276 Comment
  SD255752  Trifolium ciliolatum George K. Helmkamp, Mary Alice Barnes 2013-5-13 20601 Amador Sierra Nevada Mountains; Shake Ridge Road, 16.7 miles northeast of its junction with E-16 via Fiddletown Road. 982 Comment
  SD260184  Leontodon saxatilis subsp. saxatilis George K. Helmkamp, Mary Alice Barnes 2013-5-17 20611 Amador Northern Sierra Nevada Mountains Foothills: Stony Creek Road, 6.8 miles southwest of Jackson, 0.57 mi. NE (20a^z) of Chrome Mountain. 302 Comment
  SD260262  Melissa officinalis George K. Helmkamp, E. A. Helmkamp 2012-10-5 19976 Amador Northern Sierra Nevada Mountains Foothills: beside Sutter Creek along the Sutter Creek-Volcano Road, 0.6 mile southwest of Meadowlark Lane (Pine Grove 7.5'Q) 634 Comment
  SDSU20826  Cryptantha mariposae George L. Helmkamp, E. A. Helmkamp 2010-4-3 15796 Amador Low foothills northern Sierra Nevada Mountains: 4.35 mi. NE of Ione, Junction of Tonzi Road and CA-124/East Plymouth HWY. 180 Comment
  SEINET11265845  Pellaea mucronata subsp. mucronata George Helmkamp, E. A. Helmkamp 2011-6-7 17478 Amador Northern Sierra Nevada Mountains Foothills: Sutter Creek Road, 3.4 miles west of Volcano (Pine Grove 7.5' Q.); 0 491 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
  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
  SEINET3238913 Image available Madia George K. Helmkamp, E. A. Helmkamp 2008-5-4 13380 Amador Sierra Nevada Mountains; Barton, c. 15 miles (air) NE of Jackson, at the junction of Tiger Creek Road and Black Prince Road, 0.6 mil east of the junction of Tiger Creek Road with CA-88. 936 Comment
  SEINET3258013 Image available Draba verna George K. Helmkamp, E. A. Helmkamp 2008-3-12 13146 Amador Foothills, northern Sierra Nevada Mountains; 0.2 mile east of the junction of Bell Road and CA-49 at Enterprise; junction of Plymouth and Pigeon Creeks. 259 Comment
  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
  SEINET4142458 Image available Phleum pratense George K. Helmkamp, E. A. Helmkamp 2010-9-1 16885 Amador Northern Sierra Nevada Mountains: along CA-88, 2.6 mi. SW of junction with Mormon Emigrant Trail, 2.75 mi. NNW of Upper Bear River Reservoir 2161 Comment
  SEINET4178548 Image available Heteromeles arbutifolia George K. Helmkamp, E. A. Helmkamp 2011-6-17 17603 Amador Northern Sierra Nevada Mountains Foothills: along CA-26, 0.1 mile west of the Calaveras Co. line at the bridge over the North Fork Mokelumne River, 1.6 mi. SE of Pioneer. 652 Comment
  SEINET4691429  Ceanothus cuneatus George K. Helmkamp, E. A. Helmkamp 2010-1 15817 Amador Sierra Nevada Mountains Foothills: Fiddletown road (= Oleta Road), 2.9 miles east of CA-49 in Plymouth. 172 Comment
  UC2044606  Triphysaria eriantha George K. Helmkamp 2013-3-14 20171 Amador Central Sierra Nevada Foothills S edge of city of Plymouth; along CA-49, 1.1 miles southwest of its junction with Fiddletown Road. (Amador City 7.5' Q.) Comment
  UCD100368  Calyptridium monospermum G. K. Helmkamp; E. A. Helmkamp 2007-6-29 12426 Amador Northern Sierra Nevada Mountains. Sandy Cove picnic area, southeast of CA-88 beside the west edge of Silver Lake. 2244 Comment
  UCD103340  Geranium dissectum G. K. Helmkamp; Elizabeth Helmkamp 2006-4-7 10157 Amador Northern Sierra Nevada Foothills: ESE of Sacramento, 1.0 mi S of Plymouth along CA Hwy 49. 326 Comment
  UCD108716  Lupinus microcarpus var. densiflorus G. K. Helmkamp; E. A. Helmkamp 2007-4-5 11744 Amador Northern Sierra Nevada Mountains, along CA-49, 0.2 mile west of Amador City. 309 Comment
  UCD108829  Trifolium dubium G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11822 Amador Northern Sierra Nevada Mountains. Along CA E-16, 0.7 mile south of River Pines. 610 Comment
  UCD109602  Lupinus succulentus G. K. Helmkamp 2006-5-6 10316 Amador Northern Sierra Nevada foothills: middle of the city Jackson, 0.1 mile north of the junction of CA-49 and CA-88. 378 Comment
  UCD111971  Ceanothus integerrimus G. K. Helmkamp 2006-5-9 10331 Amador Northern Sierra Nevada: Grass Valley Creek, 1.2 miles east of Pine Grove along Hwy CA-88. 762 Comment
  UCD117024  Acer macrophyllum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-9 10346 Amador Northern Sierra Nevada Foothills; ESE of Sacramento, 3.2 miles E of Pine Grove along CA-Hwy 88. 841 Comment
  UCD133468  Hypochaeris radicata G. K. Helmkamp; Elizabeth Helmkamp 2006-4-7 10156 Amador Northern Sierra Nevada Foothills: ESE of Sacramento, 1.0 mi S of Plymouth along CA Hwy 49. 326 Comment
  UCD135444  Rudbeckia californica G. K. Helmkamp; E. A. Helmkamp 2007-8-16 12750 Amador Northern Sierra Nevada Mountains: along Hwy CA-88, 3.5 miles south of its junction with Mormon Emigrant Trail. 2146 Comment
  UCD141464  Juncus exiguus G. K. Helmkamp; E. A. Helmkamp 2007-9-4 12886 Amador Northern Sierra Nevada Mountains: along CA-88 at Mile-49, 3.1 miles east of Hams Station. 1860 Comment
  UCD67044  Eragrostis pectinacea var. miserrima G. K. Helmkamp; E. A. Helmkamp 2007-8-26 12818 Amador Northern Sierra Nevada Mountains: along Hwy. CA-49 at the south end of Plymouth. 323 Comment
  UCR171043  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 2006-3-19 10082 Amador Northern Sierra Nevada Foothills, Along Calif. Highway 49 just south of Plymouth 323 Comment
  UCR173663  Ceanothus integerrimus George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10331 Amador Northern Sierra Nevada foothills, Grass Valley Creek, 1.2 miles east of Pine Grove along Calif. Hwy 88 762 Comment
  UCR173681  Potentilla glandulosa George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10319 Amador Northern Sierra Nevada foothills, Climax Road southwest of Pine Grove, 0.1 mile west of Calif. Hwy 88 701 Comment
  UCR173834  Lathyrus tingitanus George K. Helmkamp, Elizabeth Helmkamp 2006-5-6 10308 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
  UCR174003  Clarkia williamsonii George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10806 Amador Northern Sierra Nevada foothills, northbound along Calif. Hwy 26, 0.6 mile past the North Fork of Mokelumne River 732 Comment
  UCR179817  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2006-10-6 11462 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49 near Enterprise, 1.8 miles south of El Dorado Co. line 274 Comment
  UCR182146  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2006-10-23 11565 Amador Central Valley/ Northern Sierra Nevada Foothills, along Calif. Hwy 16, 0.2 mile east of Waits Station, southwest of Plymouth 305 Comment
  UCR182148  Dittrichia graveolens George K. Helmkamp, E. A. Helmkamp 2006-10-23 11567 Amador Central Valley/ Northern Sierra Nevada Foothills, along Calif. Hwy 16, 0.2 mile east of Waits Station, southwest of Plymouth 305 Comment
  UCR184852  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2007-4-26 11821 Amador Foothills, northern Sierra Nevada Mountains, along Calif. E-16, 0.7 mile south of River Pines 610 Comment
  UCR185217  Dodecatheon hendersonii George K. Helmkamp, E. A. Helmkamp 2007-4-23 11786 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
  UCR185231  Galium aparine George K. Helmkamp, E. A. Helmkamp 2007-4-23 11789 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
  UCR187292  Dodecatheon clevelandii subsp. patulum George K. Helmkamp, E. A. Helmkamp 2007-4-5 11731 Amador Foothills, Northern Sierra Nevada Mountains, Sutter to Ione Road, 0.4 mi east of CA-49, northeast of Ione 180 Comment
  UCR188473  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2007-7-17 12520 Amador Northern Sierra Nevada Mountains, along CA-88 at Martin Meadow, 2.2 miles north of Silver Lake 2317 Comment
  UCR189425  Hypericum perforatum George K. Helmkamp, E. A. Helmkamp 2007-8-16 12748 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.0 mile south of the junction with Mormon Emigrant Trail 2172 Comment
  UCR189464  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2007-8-16 12739 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.0 mile south of the junction with Mormon Emigrant Trail 2172 Comment
  UCR189517  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2007-8-16 12737 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.0 mile south of the junction with Mormon Emigrant Trail 2172 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
  UCR190550  Ribes viscosissimum George K. Helmkamp 2007-6-29 12450 Amador Northern Sierra Nevada Mountains, south side of CA-88, 0.1 mile east of Carson Spur summit 2424 Comment
  UCR190670  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2007-9-4 12896 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
  UCR190716  Senecio integerrimus George K. Helmkamp 2007-6-29 12420 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
  UCR190718  Prunus emarginata George K. Helmkamp 2007-6-29 12419 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
  UCR194693  Oenothera elata subsp. hirsutissima George K. Helmkamp, E. A. Helmkamp 2007-10-13 13097 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
  UCR196786  Mimulus mephiticus George K. Helmkamp 2008-6-17 13681 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road along the south side of Bear River Reservoir 1797 Comment
  UCR196788  Streptanthus tortuosus var. tortuosus George K. Helmkamp 2008-6-17 13669 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR196828  Ceanothus cordulatus George K. Helmkamp 2008-6-17 13670 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR196832  Penstemon newberryi var. newberryi George K. Helmkamp 2008-6-17 13684 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road along the south side of Bear River Reservoir 1797 Comment
  UCR196861  Lupinus grayi George K. Helmkamp 2008-6-17 13700 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.1 mile south of its junction with CA-88, junction 4.0 miles east of Cook's Station 1652 Comment
  UCR197345  Phacelia heterophylla subsp. virgata George K. Helmkamp, E. A. Helmkamp 2008-5-8 13428 Amador Sierra Nevada Mountains Foothills, along CA-26, 1.0 mile west of the Calaveras County line 709 Comment
  UCR197553  Delphinium nuttallianum George K. Helmkamp, E. A. Helmkamp 2008-6-23 13711 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
  UCR197614  Silene lemmonii George K. Helmkamp 2008-6-17 13656 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR197648  Arabidopsis thaliana George K. Helmkamp, E. A. Helmkamp 2008-6-9 13640 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
  UCR197810  Agoseris heterophylla George K. Helmkamp, E. A. Helmkamp 2008-6-9 13619 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.1 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station 1652 Comment
  UCR198465  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2008-3-12 13175 Amador Sierra Nevada Mountains Foothills, along Tonzi Road 0.3 miles west of its junction with CA-49, west of Sutter Creek 360 Comment
  UCR198471  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2008-3-12 13163 Amador Sierra Nevada Mountains Foothills, Middle Bar Road, 3.7 miles south of its junction with CA-49 just south of Jackson 345 Comment
  UCR198559  Quercus chrysolepis George 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 Tiger Creek Reservoir 744 Comment
  UCR200903  Gilia leptalea subsp. leptalea George K. Helmkamp, E. A. Helmkamp 2008-8-30 14056 Amador Northern Sierra Nevada Mountains, along Cole Creek Road near the crossing of Cole Creek 6.8 miles east of the Bear River Reservoir dam 1857 Comment
  UCR201538  Mentha spicata var. spicata George K. Helmkamp, E. A. Helmkamp 2008-9-28 14170 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
  UCR201731  Verbena litoralis George K. Helmkamp, E. A. Helmkamp 2008-10-23 14276 Amador San Joaquin Valley, 0.3 mile north of the gated entrance to the North Shore Residence area of Comanche Reservoir 76 Comment
  UCR201756  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2008-10-23 14280 Amador San Joaquin Valley, unnamed dirt road 0.1 mile west of Buena Vista Road, 1.9 miles north of Jackson Valley Road 128 Comment
  UCR202671  Artemisia tridentata subsp. vaseyana George K. Helmkamp, E. A. Helmkamp 2008-9-22 14140 Amador Northern Sierra Nevada Mountains, north side of CA-88, 0.2 mile northeast of Silver Lake 2266 Comment
  UCR208312  Oxalis laxa George K. Helmkamp, E. A. Helmkamp 2009-3-26 14471 Amador San Joaquin Valley, along CA-88, 0.4 mile northeast of the San Joaquin Co. line 81 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
  UCR209561  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2009-8-6 15397 Amador Sierra Nevada Mountains Foothills, along Hwy CA-88, 3.1 miles northeast of CA-49 in Jackson 424 Comment
  UCR218184  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2010-5-31 16193 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 5.2 miles east of the village of Sutter Creek 451 Comment
  UCR218191  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2010-5-31 16157 Amador Sierra Nevada Mountains Foothills, Church Street, becoming Sutter Creek-Volcano Road, 0.2 mile east of the village of Sutter Creek 402 Comment
  UCR218199  Leontodon taraxacoides George K. Helmkamp, E. A. Helmkamp 2010-5-31 16166 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 1.6 miles east of the village of Sutter Creek 412 Comment
  UCR218214  Galium parisiense George K. Helmkamp, E. A. Helmkamp 2010-5-31 16191 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 3.3 miles east of the village of Sutter Creek 413 Comment
  UCR219001  Atriplex canescens subsp. canescens George K. Helmkamp, E. A. Helmkamp 2009-10-11 15678 Amador Sierra Nevada Mountains Foothills, along Hwy CA-49, 1.0 mile south of Plymouth, 1.3 mi. north of Drytown 303 Comment
  UCR219009  Pentagramma triangularis subsp. triangularis George K. Helmkamp, E. A. Helmkamp 2010-6-23 16337 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
  UCR219025  Galium bolanderi George K. Helmkamp, E. A. Helmkamp 2010-6-23 16351 Amador Sierra Nevada Mountains Foothills, Sutter Creek Road, 9.5 miles northeast of its junction with old CA-49 in Sutter Creek village 576 Comment
  UCR219043  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2010-7-13 16513 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219064  Galium trifidum var. pusillum George K. Helmkamp, E. A. Helmkamp 2009-9-15 15613 Amador Northern Sierra Nevada Mountains, south side of Bear River Reservoir, 0.1 mile east of the dam 1774 Comment
  UCR219171  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2009-9-22 15636 Amador Sierra Nevada Mountains Foothills, junction of Shenandoah Road (CA-16) and Steiner Road, southwest of River Pines 750 Comment
  UCR219179  Dudleya cymosa subsp. cymosa George K. Helmkamp, E. A. Helmkamp 2010-6-23 16363 Amador Sierra Nevada Mountains Foothills, Sutter Creek Road, 9.5 miles northeast of its junction with old CA-49 in Sutter Creek village 576 Comment
  UCR230085  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2011-6-7 17484 Amador Northern Sierra Nevada Mountains Foothills, Shake Ridge Road, 7.6 rd. miles northeast (via Pine Gulch & Gopher Flat rds) of junction of Sutter Creek Rd. and Pine Gulch Rd. 712 Comment
  UCR230634  Carduus pycnocephalus George K. Helmkamp, E. A. Helmkamp 2011-5-10 17241 Amador Northern Sierra Nevada Mountains Foothills, along Sutter Creek near Sutter Creek Rd., 2.9 air miles NE (68 deg. ) of town of Sutter Creek 412 Comment
  UCR230655  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2011-5-10 17234 Amador Northern Sierra Nevada Mountains Foothills, Turner Road, 0.8 miles south of its junction with Amador Creek Road, 0.95 mi. SE (119 deg. ) of Amador City 311 Comment
  UCR230752  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2010-10-1 16999 Amador Northern Sierra Nevada Mountains Foothills, Shake Ridge Road, 1.1 miles southwest of its junction with Hale Road, 2.5 mi. NW (285 deg. ) of Volcano 692 Comment
  UCR230970  Mimulus kelloggii George K. Helmkamp, E. A. Helmkamp 2011-6-7 17471 Amador Northern Sierra Nevada Mountains Foothills, Sutter Creek Road, 3.4 miles west of Volcano 491 Comment
  UCR232214  Iris hartwegii subsp. hartwegii George K. Helmkamp, E. A. Helmkamp 2011-6-7 17488 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
  UCR233371  Eriogonum roseum George K. Helmkamp, E. A. Helmkamp 2011-9-16 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 deg. ) of Pioneer 762 Comment
  UCR233405  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2011-8-6 17958 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR233429  Lotus nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 2011-8-6 17960 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR233666  Mimulus bicolor George K. Helmkamp, E. A. Helmkamp 2011-8-6 17957 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR233674  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2011-8-6 17952 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR235287  Hordeum murinum subsp. glaucum George K. Helmkamp, E. A. Helmkamp 2012-4-19 18799 Amador Foothills, northern Sierra Nevada Mountains, Fiddletown Road, 0.2 mile east of its junction with County Road E-16, c. 0.7 mi. E of Hwy 49 at Plymouth 416 Comment
  UCR235416  Geranium molle George K. Helmkamp, E. A. Helmkamp 2012-4-19 18791 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
  UCR237443  Platanthera sparsiflora George K. Helmkamp, E. A. Helmkamp 2012-7-14 19414 Amador Northern Sierra Nevada Mountains, Tragedy Spring, near Carson Pass Hwy, along Tragedy Spring Road 0.3 mile east of its junction with CA-88 2421 Comment
  UCR237601  Spergula arvensis subsp. arvensis George K. Helmkamp, E. A. Helmkamp 2012-3-3 18599 Amador Northern Sierra Nevada Mountains Foothills, along CA-124 (E Plymouth Hwy), 1.2 miles northeast of Ione 169 Comment
  UCR237722  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2012-7-14 19380 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
  UCR237736  Juncus drummondii George K. Helmkamp, E. A. Helmkamp 2012-7-14 19383 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
  UCR237738  Spiraea densiflora George K. Helmkamp, E. A. Helmkamp 2012-7-14 19375 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
  UCR238603  Lomatium caruifolium George K. Helmkamp, E. A. Helmkamp 2012-3-22 18638 Amador Northern Sierra Nevada Mountains Foothills, Bell Road, 0.2 mile east of its junction with CA-49 270 Comment
  UCR240664  Gnaphalium canescens subsp. beneolens George K. Helmkamp, E. A. Helmkamp 2012-10-5 19983 Amador Northern Sierra Nevada Mountains Foothills, Fiddletown Road, 1.3 miles west of its junction with Shake Ridge Road 941 Comment
  UCR240736  Oenothera elata subsp. hirsutissima George K. Helmkamp, E. A. Helmkamp 2012-9-1 19730 Amador Northern Sierra Nevada Mountains Foothills, aong CA-88 (Carson Pass Hwy) at the east end of Jackson; 0.2 mile east of the junction with CA-49 366 Comment
  UCR241361  Poa pratensis subsp. pratensis George K. Helmkamp, E. A. Helmkamp 2012-6-26 19261 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
  UCR241369  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2012-6-26 19273 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
  UCR241375  Achnatherum occidentale subsp. californicum George K. Helmkamp, E. A. Helmkamp 2012-6-26 19253 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
  UCR241973  Epilobium densiflorum George K. Helmkamp, E. A. Helmkamp 2012-9-7 19774 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
  UCR241985  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2012-9-7 19794 Amador Northern Sierra Nevada Mountains Foothills, along CA-49 in Plymouth; 0.1 mile south of its junction with Fiddletown Rd./Plymouth-Shenandoah Rd. 303 Comment
  UCR241996  Euphorbia ocellata George K. Helmkamp, E. A. Helmkamp 2012-9-7 19767 Amador Northern Sierra Nevada Mountains Foothills, along CA-49, 1.2 miles north of the junction with Fiddletown Road at Plymouth 299 Comment
  UCR241998  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2012-9-7 19765 Amador Northern Sierra Nevada Mountains Foothills, along CA-49, 1.2 miles north of the junction with Fiddletown Road at Plymouth 299 Comment
  UCR242787  Castilleja tenuis George K. Helmkamp, E. A. Helmkamp 2010-9-1 16918 Amador Northern Sierra Nevada Mountains, Dufrene Road 0.7 mile east of its junction with CA-88, north of Lower Bear River Reservoir 2044 Comment
  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
  UCR246406  Dodecatheon clevelandii subsp. patulum George K. Helmkamp, E. A. Helmkamp 2012-3-22 18622 Amador Northern Sierra Nevada Mountains Foothills, Rancho Cicada Retreat; private road, 1.1 miles north of Bell Road on east side of Middle Fork Cosumnes River 255 Comment
  UCR246408  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2012-3-22 18628 Amador Northern Sierra Nevada Mountains Foothills, Bell Road, 1.2 miles east of CA-49 at private road to Rancho Cicada Retreat 371 Comment
  UCR248382  Lepidium virginicum var. virginicum George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21002 Amador Northern Sierra Nevada Mountains, Plasse Road toward Silver Lake, 0.3 mile south of CA-88/Carson Pass Hwy 2276 Comment
  UCR248400  Poa George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21029 Amador Northern Sierra Nevada Mountains, Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  UCR248677  Delphinium nuttallianum George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21028 Amador Northern Sierra Nevada Mountains, Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  UCR249566  Triphysaria eriantha George K. Helmkamp 2013-3-14 20171 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
  UCR250170  Anthemis cotula George K. Helmkamp, Elizabeth Helmkamp 2013-5-22 20661 Amador Northern Sierra Nevada Mtns. Foothills, Ostrom Road, 1.2 miles east of E-16 (Plymouth-Shenandoah Rd.), 1.1 mi. north (353 deg. ) of Fiddletown 572 Comment
  UCR250606  Petrorhagia dubia George K. Helmkamp, Mary Alice Barnes 2013-4-24 20381 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
  UCR250608  Vicia villosa subsp. villosa George K. Helmkamp, Mary Alice Barnes 2013-4-24 20379 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
  UCR252536  Typha latifolia George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22167 Amador Sierra Nevada Mountains Foothills, Along CA-49, just northeast of its junction with Randolph Court, c. 1 km S of Plymouth 326 Comment
  UCR252941  Kelloggia galioides George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20979 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam for Lower Bear River Reservoir 1784 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
  UCR253086  Mimulus guttatus George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22155 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 11.3 miles northeast of the town of Sutter Creek 582 Comment
  UCR253088  Polygonum punctatum George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22153 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 11.3 miles northeast of the town of Sutter Creek 582 Comment
  UCR253189  Plantago lanceolata George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22165 Amador Sierra Nevada Mountains Foothills, Along CA-49, just northeast of its junction with Randolph Court, c. 1 km S of Plymouth 326 Comment
  UCR253194  Lotus purshianus var. purshianus George K. Helmkamp, Elizabeth Helmkamp 2013-8-11 22160 Amador Sierra Nevada Mountains Foothills, Along CA-49, just northeast of its junction with Randolph Court, c. 1 km S of Plymouth 326 Comment
  UCR253237  Juncus ensifolius George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20996 Amador Northern Sierra Nevada Mountains, Bear River Road, 1.5 road miles east of the dam for Lower Bear River Reservoir 1837 Comment
  UCR253456  Erodium moschatum George K. Helmkamp 2014-4-5 22661 Amador Sierra Nevada Foothills, junction of Tonzi Road and CA-124, NE of Ione 201 Comment
  UCR253458  Bromus madritensis subsp. madritensis George K. Helmkamp 2014-4-5 22676 Amador Eastern San Joaquin Valley, Sutter Creek-Ione Road, 1.2 miles south of its junction with CA-124 197 Comment
  UCR253480  Vicia villosa subsp. villosa George K. Helmkamp 2014-4-5 22686 Amador Eastern edge of San Joaquin Valley/lower Sierra Nevada Foothills, Sutter Creek along West Marlette Street, 0.1 mile east of Dave Brubeck Road, west end of city of Ione 85 Comment
  UCR253509  Festuca dertonensis George K. Helmkamp 2014-4-5 22654 B Amador Sierra Nevada Foothills, junction of Tonzi Road and CA-124, NE of Ione 201 Comment
  UCR253525  Hypericum anagalloides George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20964 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
  UCR256493  Briza maxima George K. Helmkamp, Amy Barnes 2014-5-8 22846 Amador Sacramento Valley/Sierra Nevada Foothills, along CA-104, 1.2 miles southeast of Ione 146 Comment
  UCR256676  Clarkia unguiculata George K. Helmkamp, Amy Barnes 2014-5-8 22854 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 0.2 mile east of old CA-49 in town of Sutter Creek 375 Comment
  UCR256985  Luzula comosa George K. Helmkamp, Mary Alice Barnes 2013-5-13 20571 Amador Sierra Nevada Mountains, Fiddletown Road, c. 9 miles northeast of its junction with E-16/Shenandoah Rd. near Plymouth 665 Comment
  UCR257015  Madia rammii George K. Helmkamp, Mary Alice Barnes 2013-5-13 20569 Amador Sierra Nevada Mountains, Fiddletown Road, c. 9 miles northeast of its junction with E-16/Shenandoah Rd. near Plymouth 665 Comment
  UCR257084  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
  UCR257099  Brodiaea elegans subsp. elegans George K. Helmkamp, Mary Alice Barnes 2013-5-17 20606 Amador Northern Sierra Nevada Mountains Foothills, Stony Creek Road, 3.6 miles southwest of Jackson 293 Comment
  UCR257185  Calochortus monophyllus George K. Helmkamp, Mary Alice Barnes 2013-5-13 20588 Amador Sierra Nevada Mountains, Fiddletown Road 12.7 miles northeast of its junction with E-16, c. 1.9 mi. west of junction with Shake Ridge Rd. 872 Comment
  UCR257203  Juncus ensifolius George K. Helmkamp, Elizabeth Helmkamp 2013-9-7 22278 Amador Northern Sierra Nevada Mountains, Tragedy Spring Road, 0.17 mi. above junction with Hwy 88/Carson Pass Rd., at the entrance path to the spring 2425 Comment
  UCR257672  Phacelia hydrophylloides George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19567 Amador Northern Sierra Nevada Mountains, West Lake Road along the west side of Silver Lake; 4.1 miles north of junction with Plasse Road 2247 Comment
  UCR258108  Castilleja miniata subsp. miniata George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19557 Amador Northern Sierra Nevada Mountains, West Lake Road along the west side of Silver Lake; 4.1 miles north of junction with Plasse Road 2247 Comment
  UCR259857  Vicia villosa subsp. villosa George K. Helmkamp, Elizabeth Helmkamp 2013-10-18 22446 Amador Sierra Nevada Mountains Foothills, southern edge of Plymouth, east side of CA-49, opposite the junction with Randolph Court 332 Comment
  UCR259881  Polygonum aviculare George K. Helmkamp, Elizabeth Helmkamp 2013-10-22 22452 Amador Sierra Nevada Mountains Foothills, Shenandoah Road, near Sobon Creek, 6.8 miles northeast of its junction with CA-49 in Plymouth 563 Comment
  UCR259889  Plantago lanceolata George K. Helmkamp, Elizabeth Helmkamp 2013-10-18 22441 Amador Sierra Nevada Mountains Foothills, Plymouth, at the junction of Mineral Street and Mill Street, near Hwy CA-49 329 Comment
  UCR261984  Chrysolepis sempervirens George K. Helmkamp, Amy Barnes 2014-10-10 23134 Amador Northern Sierra Nevada Mountains, west side of Bear River Reservoir, 0.2 mile north of the dam 1796 Comment
  UCR272770  Senecio vulgaris George K. Helmkamp 2014-3-14 22567 Amador West end Sacramento Valley, Willow Creek Road, 1.1 miles south of Hwy E-16 253 Comment
  SEINET2033538 Image available Aster integrifolius George K. Helmkamp 2008-1 Amador Northern Sierra Nevada Mountains, north side of CA-88, 0.2 mile northeast of Silver Lake Comment
  SEINET3828594  Cirsium vulgare G. K. Helmkamp, E. A. Helmkamp 2010-1 16995 Amador Northern Sierra Navada Mountains Foothills; Shake Ridge Road, 1.1 mi southwest of its junction with Hale Road, 2.5 mi northwest (285*) of Volcano 1000 Comment
  UCD99411  Stellaria media G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11787 Amador Northern Sierra Nevada Mountains; along Bell Road beside Plymouth Creek just east of CA-49 in the vicinity of Enterprise. Comment
  RSA746974  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2007-10-7 13063 Butte East Gridley Road at the west edge of the Feather River bridge 27 Comment
  SD239731  Acmispon americanus var. americanus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Sacramento Valley: Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi WSW (261a^z) of Honcut, 6.6 miles SE (116a^z) of Gridley (Honcut 7.5'Q) 27 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  UCR188567  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2007-10-7 13063 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 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
  UCR219106  Typha angustifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15598 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  UCR219108  Tribulus terrestris George K. Helmkamp, E. A. Helmkamp 2009-9-5 15594 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
  UCR219264  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15589 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  UCR237304  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18757 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  UCR237326  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18735 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  UCR237328  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2012-4-14 18738 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  UCR237332  Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 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-BC421863  Rumex acetosella G. K. Helmkamp; E. A. Helmkamp 2008-5-29 13513 Calaveras Sierra Nevada Mountains: Arnold Way Road parallel to CA-4 (Ebbetts Pass Hwy), 0.8 mile northeast of Arnold. 1265 Comment
  CDA36254  Cerastium glomeratum G. K. Helmkamp, E. A. Helmkamp 2007-4-26 11840 Calaveras Foothills, Northern Sierra Nevada Mountains; Along Calif. Hwy 49, 1 mile west of Mokelumne Hill, 1.7 miles south of the Amador County line. Comment
  HSC104246  Vicia villosa subsp. villosa G. K. Helmkamp, Amy Barnes 2010-5-7 15977 Calaveras Sierra Nevada Mountains Foothills; along CA-49, 0.4 mi. N of its junction with CA-12, vicinity of San Andreas 233 Comment
  JEPS119470  Madia elegans subsp. densifolia George K. Helmkamp with E. A. Helmkamp 2010-10-6 17003 Calaveras n SNF: Along CA-26, 0.6 mi east of CA-49 at Mokelumne Hill. Comment
  RSA0035733  Eschscholzia californica George K. Helmkamp, Elizabeth A. Helmkamp 2013-5-24 20710 Calaveras North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  RSA0035736  Euphorbia oblongata George K. Helmkamp, Elizabeth A. Helmkamp 2013-5-24 20701 Calaveras North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  RSA0042500  Allophyllum divaricatum George K. Helmkamp, Elizabeth A. Helmkamp 2013-5-24 20672 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
  RSA0057870  Medicago lupulina George K. Helmkamp, E. A. Helmkamp 2013-11-9 22474 Calaveras Gwin Mine Road, 1.3 rd. miles north of Paloma Rd. at Paloma, 3.3 miles SW (242 deg air) of Mokelumne Hill 384 Comment
  RSA0093528  Nemophila heterophylla George K. Helmkamp, Mary Alice Barnes 2013-4-24 20396 Calaveras Northern Sierra Nevada Mountains Foothills. Along CA-26 (West Point-Pioneer Rd.), at the west side of the bridge over North Fork Mokelumne River. 654 Comment
  RSA757005  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2009-7-30 15319 Calaveras Ottawa Drive, 0.1 mile south of its junction with CA-4, 1.2 miles northeast of Dorrington 1471 Comment
  RSA779402  Lotus oblongifolius var. oblongifolius George K. Helmkamp, E. A. Helmkamp 2009-7-30 15354 Calaveras Forestry Route 6N45, just north of its junction with CA-44, 15.1 miles northeast of Arnold 2018 Comment
  RSA794692  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2011-7-12 17720 Calaveras Winton Road, 9.6 miles east of its junction with CA-26 in West Point 1299 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
  SD197925  Erythranthe guttata G. K. Helmkamp, E. A. Helmkamp 2007-4-26 11852 Calaveras Mokelumne Vista, 0.4 mile south of CA-49 and Mokelumne Hill. 441 Comment
  SD234966  Vicia sativa subsp. nigra G. K. Helmkamp, E. A. Helmkamp 2008-4-11 13268 Calaveras Sierra Nevada Mountains Foothills: junction of Fricot City road and Calavaritas Road, southeast of the city of San Andreas. 433 Comment
  SD236163  Lomatium utriculatum G. K. Helmkamp, E. A. Helmkamp 2008-3-22 13203 Calaveras San Joaquin Valley/Sierra Nevada Mountains Foothills: along CA-26 (joint with CA-12) 10.6 miles southwest of its junction with CA-49 213 Comment
  SD239627  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2011-7-12 17731 Calaveras Northern Sierra Nevada Mountains Foothills: Winton Road (Forest Route 7N03), 14.4. miles east of its junction with CA-26 in West Point (Garnet Hill 7.5'Q) 1590 Comment
  SD239686  Spergula arvensis George K. Helmkamp, E. A. Helmkamp 2012-4-4 18678 Calaveras Northern San Joaquin Valley: along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Sprints. (Valley Springs 7.5'Q) 67 Comment
  SD239785  Phacelia corymbosa George K. Helmkamp, E. A. Helmkamp 2011-9-16 18283 Calaveras Northern Sierra Nevada Mountains Foothills: Bald Mountain Road, 1.5 miles SW of Hunter Creek crossing, 7.3 miles NE of the junction of Blue Mountain Road and Rail Road Flat Road (Devil's Nose 7.5'Q) 1036 Comment
  SD240788  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2012-5-15 18976 Calaveras Northern Sierra Nevada Mountains Foothills: along Murray Creek Road (Murraydale Lane), 1.4 miles east of Pope Road in San Andreas (San Andreas 7.5'Q) 387 Comment
  SD240981  Sedella pumila George K. Helmkamp, E. A. Helmkamp 2012-4-4 18705 Calaveras Northern San Joaquin Valley: Along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs (Valley Springs SW 7.5'Q) 67 Comment
  SD248356  Plagiobothrys austiniae George K. Helmkamp 2013-3-14 20187 Calaveras San Joaquin Valley/Sierra Nevada Foothills: Jenny Lind Road (County Road J14) 0.1 mile north of its junction with Kirby Road, 24 mile NE of Stockton (Valley Springs 7.5'Q) 91 Comment
  SD255604  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 northeasst of tis junction with CA-4 (Murphy's 7.5'Q) 974 Comment
  SD257112  Calochortus superbus George K. Helmkamp 2014-5-17 22887 Calaveras Sierra Nevada Mountains Foothills: along CA-26, 3.8 miles northeast of CA-49 at Mokelumne Hill (Mokelumne Hill 7.5'Q) 438 Comment
  SEINET11266295  Eriogonum nudum var. deductum George Helmkamp, E. A. Helmkamp 2010-8-3 16695 Calaveras Northern Sierra Nevada Mountains: along CA-4, 0.8 mile southwest of the junction with Forest Route 7N23/ Black Creek Rd., NE of Dorrington (Boards Crossing 7.5' Q.); 0 1854 Comment
  SEINET13262665 Image available Avena fatua George K. Helmkamp, Elizabeth Helmkamp 2013-1 20212 Calaveras Milton, Jenny Lind Road (Milton Rd.), 7.4 miles south of its junction with CA-26 120 Comment
  SEINET1908716  Lasthenia platycarpha G. K. Helmkamp, E. A. Helmkamp 2008-1 13216 Calaveras San Joaquin Valley/Sierra Nevada Mountains Foothills: 1.8 miles north of Burson via Burson Rd., at junction of Comanche Parkway South and Pattison Way 122 Comment
  SEINET3123950 Image available Leontodon taraxacoides George K. Helmkamp, Amy Barnes 2010-5-7 16968 Calaveras Sierra nevada Mountains, Foothills along CA-49, 0.4 miles north of its junction with Ca-12, vicinity of San Andreas 230 Comment
  SEINET3246083  Quercus kelloggii G. K. Helmkamp, E. A. Helmkamp 2006-1 11502 Calaveras Northern Sierra Nevada Mountains Foothills: along Hwy CA-26 southeast of West Point. 738 Comment
  SEINET3815557 Image available Elymus glaucus George K. Helmkamp, E. A. Helmkamp 2012-5-15 18965 Calaveras Northern Sierra Nevada Mountains Foothills: along Murray Creek Road (Murraydale Ln.), 1.4 miles E of Pope Road in San Andreas 387 Comment
  SEINET3860056  Cerastium glomeratum George K. Helmkamp, Amy Barnes 2010-5-7 15976 Calaveras Sierra Nevada Mountains Foothills: along CA-49, 0.4 mile north of its junction with CA-12, vicinity of San Andreas.; 0 233 Comment
  SEINET4178602 Image available Hordeum marinum George K. Helmkamp, E. A. Helmkamp 2011-6-17 17573 Calaveras Northern Sierra Nevada Mountains Foothills: Winton Road, 0.8 mile northeast of CA-26 at Westpoint. 977 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
  SEINET4178802 Image available Heteromeles arbutifolia George K. Helmkamp, E. A. Helmkamp 2010-10-6 17011 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
  SEINET4178834 Image available Lomatium caruifolium George K. Helmkamp, E. A. Helmkamp 2011-3-29 17093 Calaveras East end San Joaquin Valley: along CA-26, 1.8 miles southwest of Valley Springs. 206 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
  SEINET4178850 Image available Croton setiger George K. Helmkamp, E. A. Helmkamp 2010-10-6 17007 Calaveras Northern Sierra Nevada Mountains Foothills: along CA - 26, 0.6 mile east of CA - 49 at Mokelumne Hill 483 Comment
  SEINET4560821  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2011-1 17323 Calaveras Northern Sierra Nevada Mountains Foothills: Ridge Road, 1.9 rd. miles southeast of CA-26, 1.8 air mi. southeast (130 degrees) of Glencoe. 863 Comment
  SEINET4691468  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2010-1 17012 Calaveras Northern Sierra Nevada Mountains Foothills: junction of Woodhouse Mine Road and CA-26 (Stephen P. Teale Hwy), between West Point and Glencoe. 710 Comment
  SEINET9259811 Image available Dichelostemma capitatum subsp. capitatum George K. Helmkamp 2013-1 20180 Calaveras San Joaquin Valley/ Sierra Nevada Foothills: Jenny Lind Road (County Road J14) 0.1 mile north of its junction with Kirby Road, 24 miles NE of Stockton (valley SPrings SW 7.5 Q) 91 Comment
  UC1931000  Lessingia leptoclada G. K. Helmkamp, E. A. Helmkamp 2006-10-8 11497 Calaveras Northern Sierra Nevada Mountains Foothills: along Hwy CA-26 at the West Branch of the Mokulumne River, about 15 miles west of CA-49 Comment
  UC2044608  Vicia americana George K. Helmkamp with E. A. Helmkamp 2011-6-17 17562 Calaveras Northern Sierra Nevada Mountains Foothills Winton Road, 0.8 mile northeast of CA-26 at West Point. (West Point 7.5' Q.) Comment
  UCD103037  Lythrum hyssopifolia G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-29 10800 Calaveras Northern Sierra Nevada foothills. Along Hwy CA-26, 0.2 mile N of West Point. 838 Comment
  UCD107249  Lupinus bicolor G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11837 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
  UCD130098  Centaurea solstitialis G. K. Helmkamp; E. A. Helmkamp 2007-9-24 13006 Calaveras Northern foothills, Sierra Nevada Mountains: in Rich Gulch along Gwin Mine Road, 1.2 miles north of Paloma. 329 Comment
  UCD133547  Lactuca serriola G. K. Helmkamp; E. A. Helmkamp 2007-9-24 13005 Calaveras Northern Sierra Nevada Mountains: in Rich Gulch along Gwin Mine Road, 1.2 miles north fo Paloma. 329 Comment
  UCD139368  Triteleia laxa G. K. Helmkamp; E. A. Helmkamp 2007-4-26 11838 Calaveras Foothills, Northern Sierra Nevada Mountains along Ca-49, 1 mile west of Mokelumne Hill, 1.7 miles south of the Amador County line. 370 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
  UCD66098  Quercus douglasii G. K. Helmkamp; E. A. Helmkamp 2007-9-24 13003 Calaveras Northern Sierra Nevada Mountains: along Hwy. CA-49, 0.5 mile west (northbound route) of Mokelumne Hill. 396 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
  UCR182284  Verbascum virgatum George K. Helmkamp, E. A. Helmkamp 2006-10-8 11483 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
  UCR182291  Madia elegans George K. Helmkamp, E. A. Helmkamp 2006-10-8 11490 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
  UCR182299  Symphoricarpos rotundifolius var. rotundifolius George K. Helmkamp, E. A. Helmkamp 2006-10-8 11498 Calaveras Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 26 at the West Branch of the Mokulumne River, about 15 miles west of Calif. Hwy 49 710 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
  UCR184940  Pityrogramma triangularis var. triangularis George K. Helmkamp, E. A. Helmkamp 2007-4-26 11836 Calaveras Foothills, Northern Sierra Nevada Mountains, along Calif. Hwy 49, 1 mile west of Mokelumne Hill, 1.7 miles south of the Amador County line 370 Comment
  UCR184955  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2007-4-26 11853 Calaveras Northern Sierra Nevada Mountains Foothills, Mokelumne Vista, 0.4 mile south of Calif. Hwy 49 and Mokelumne Hill 442 Comment
  UCR188520  Grindelia camporum var. camporum George K. Helmkamp, E. A. Helmkamp 2007-9-24 13001 Calaveras Foothills, northern Sierra Nevada Mountains, along Hwy CA-49, 0.5 mile west (northbound route) of Mokelumne Hill 396 Comment
  UCR197255  Geranium molle George K. Helmkamp, E. A. Helmkamp 2008-4-11 13266 Calaveras Sierra Nevada Mountains Foothills, junction of Fricot City Road and Calavaritas Road, southeast of the city of San Andreas 433 Comment
  UCR197290  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2008-5-29 13514 Calaveras Sierra Nevada Mountains, Arnold Way Road parallel to CA-4 (Ebbetts Pass Hwy), 0.8 mile northeast of Arnold 1265 Comment
  UCR197337  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2008-5-8 13404 Calaveras Sierra Nevada Mountains Foothills, Ridge Road, 1.6 miles east of CA-26, southeast of Glencoe 866 Comment
  UCR197350  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2008-5-29 13546 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
  UCR197386  Claytonia parviflora George K. Helmkamp, E. A. Helmkamp 2008-3-18 13182 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
  UCR197388  Claytonia parviflora subsp. parviflora George K. Helmkamp, E. A. Helmkamp 2008-3-18 13177 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
  UCR197395  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2008-3-18 13185 Calaveras Sierra Nevada Mountains Foothills, Jesus Maria Road, 2.4 miles southeast of its junction with CA-26; beside Jesus Maria Creek 305 Comment
  UCR197496  Quercus wislizeni var. wislizeni George K. Helmkamp, E. A. Helmkamp 2008-3-22 13226 Calaveras San Joaquin Valley / Sierra Nevada Mountains Foothills, along CA-26, 3.7 miles southwest of Valley Springs at Lime Creek Road 143 Comment
  UCR197498  Lasthenia platycarpha George K. Helmkamp, E. A. Helmkamp 2008-3-22 13216 Calaveras San Joaquin Valley / Sierra Nevada Mountains Foothills, 1.8 miles north of Burson via Burson Rd., at the junction of Comanche Parkway South and Pattison Way 122 Comment
  UCR197520  Oxalis laxa George K. Helmkamp, E. A. Helmkamp 2008-4-11 13250 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
  UCR197567  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2008-5-29 13508 Calaveras Sierra Nevada Mountains Foothills, 0.6 mile southeast of CA-4 at Red Apple, on road to Darby Knob 991 Comment
  UCR198408  Arctostaphylos manzanita subsp. manzanita George K. Helmkamp, E. A. Helmkamp 2008-4-11 13265 Calaveras Sierra Nevada Mountains Foothills, at the junction of Fricot City Road and San Antone Camp Road, beside Antonio Creek 488 Comment
  UCR198479  Geranium molle George K. Helmkamp, E. A. Helmkamp 2008-3-18 13180 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
  UCR200941  Verbascum blattaria George K. Helmkamp, E. A. Helmkamp 2008-9-30 14181 Calaveras Foothills, northern Sierra Nevada Mountains, along CA-49, 1.9 miles south of Mokelumne Hill 381 Comment
  UCR207049  Lotus nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 2009-7-30 15313 Calaveras Sierra Nevada Mountains, Ottawa Drive, 0.1 mile south of its junction with CA-4, 1.2 miles northeast of Dorrington 1471 Comment
  UCR207447  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-7-30 15322 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
  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
  UCR215803  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2009-7-30 15333 Calaveras Sierra Nevada Mountains, Ganns Meadow Drive just south of its junction with CA-4, 16.7 miles northeast of Arnold 2067 Comment
  UCR217832  Leontodon taraxacoides George K. Helmkamp, Amy Barnes 2010-5-7 15968 Calaveras Sierra Nevada Mountains Foothills, along CA-49, 0.4 mile north of its junction with CA-12, vicinity of San Andreas 233 Comment
  UCR218141  Petrorhagia dubia George K. Helmkamp, Amy Barnes 2010-5-7 16001 Calaveras Sierra Nevada Mountains Foothills, Mountain Ranch Road, 3.2 miles east of San Andreas 436 Comment
  UCR218149  Collinsia heterophylla George K. Helmkamp, Amy Barnes 2010-5-7 15985 Calaveras Sierra Nevada Mountains Foothills, Michel Road, 0.1 mile east of its junction with Mountain Ranch Road. 5.2 mi. east (92.5 deg. ) of San Andreas 512 Comment
  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
  UCR229567  Gilia leptalea subsp. leptalea George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18053 Calaveras Northern Sierra Nevada Mountains, Black Springs Road [Forest Route 7N23], 1.7 miles north of its junction with CA Hwy 4 2058 Comment
  UCR230073  Torilis nodosa George K. Helmkamp, E. A. Helmkamp 2011-5-19 17315 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
  UCR230115  Cryptantha simulans George K. Helmkamp, E. A. Helmkamp 2011-7-19 17846 Calaveras Northern Sierra Nevada Mountains, Forest Route 5N75, 1.1 miles west of Boards Crossing bridge over North Fork Stanislaus River 1220 Comment
  UCR230141  Barbarea orthoceras George K. Helmkamp, E. A. Helmkamp 2011-5-21 17347 Calaveras Northern Sierra Nevada Mountains Foothills, Railroad Flat Road at the junction with Cedar Ridge Road, 10.5 mi. ENE (87 deg. ) of Mokelumne Hill 846 Comment
  UCR230149  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2011-5-21 17351 Calaveras Northern Sierra Nevada Mountains Foothills, Railroad Flat Road at junction with Wharregard Road and beside Esperanzo Creek, 8.3 miles NW (289 deg. ) of Arnold 759 Comment
  UCR231098  Polygonum punctatum George K. Helmkamp, E. A. Helmkamp 2011-9-16 18271 Calaveras Northern Sierra Nevada Mountains Foothills, Bald Mountain Road, 1.5 miles SW of Hunter Creek crossing, 7.3 miles NE of the junction of Blue Mountain Rd and Rail Road Flat Rd 1037 Comment
  UCR231103  Deschampsia elongata George K. Helmkamp, E. A. Helmkamp 2011-9-16 18274 Calaveras Northern Sierra Nevada Mountains Foothills, Bald Mountain Road, 1.5 miles SW of Hunter Creek crossing, 7.3 miles NE of the junction of Blue Mountain Rd and Rail Road Flat Rd 1037 Comment
  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
  UCR232273  Limnanthes douglasii subsp. rosea George K. Helmkamp, E. A. Helmkamp 2011-3-29 17089 Calaveras Eastern San Joaquin Valley, along CA-26, 0.4 mile north of its junction with CA-12, 0.16 mi. N of Double Springs Rd., 4 miles NE (64 deg. ) of Valley Springs 320 Comment
  UCR232285  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2011-3-29 17091 Calaveras East end San Joaquin Valley, along CA-26, 1.8 miles southwest of Valley Springs 206 Comment
  UCR233060  Thalictrum fendleri var. polycarpum George K. Helmkamp, E. A. Helmkamp 2011-5-21 17349 Calaveras Northern Sierra Nevada Mountains Foothills, Railroad Flat Road at junction with Wharregard Road and beside Esperanzo Creek, 8.3 miles NW (289 deg. ) of Arnold 759 Comment
  UCR233131A  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2011-5-21 17324 Calaveras Northern Sierra Nevada Mountains Foothills, Ridge Road, 1.9 rd. miles southeast of CA-26, 1.8 air mi. southeast (130 deg. ) of Glencoe 863 Comment
  UCR233139A  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2011-5-21 17340 Calaveras Northern Sierra Nevada Mountains Foothills, Railroad Flat Road at the junction with Cedar Ridge Road, 10.5 mi. ENE (87 deg. ) of Mokelumne Hill 846 Comment
  UCR233147B  Eriogonum prattenianum var. prattenianum George K. Helmkamp, E. A. Helmkamp 2011-7-12 17723 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
  UCR233154B  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2011-7-12 17718 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 Comment
  UCR233233  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2011-7-12 17731 Calaveras Northern Sierra Nevada Mountains, Winton Road (Forest Route 7N03), 14.4 miles east of its junction with CA-26 in West Point 1590 Comment
  UCR233260  Velezia rigida George K. Helmkamp, E. A. Helmkamp 2011-7-12 17706 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 6.7 miles east of its junction with CA-26 in West Point 1192 Comment
  UCR233365  Polypogon George K. Helmkamp, E. A. Helmkamp 2011-9-16 18287 Calaveras Northern Sierra Nevada Mountains Foothills, Bald Mountain Road, at the south side of the bridge over Hunter Creek, 8.8 miles northeast of the junction of Blue Mountain Road and Rail Road Flat Road 1034 Comment
  UCR233379  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2011-9-16 18298 Calaveras Northern Sierra Nevada Mountains Foothills, along Railroad Flat Road, 2.2 miles southeast of its junction with CA-26, 0.4 mi. SE of Wilseyville 895 Comment
  UCR235418  Briza minor George K. Helmkamp, E. A. Helmkamp 2012-5-15 18970 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 Comment
  UCR235444  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2012-5-15 18973 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 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
  UCR235500  Veronica arvensis George K. Helmkamp, E. A. Helmkamp 2012-5-15 18991 Calaveras Northern Sierra Nevada Mountains Foothills, at a crossing of Murray Creek along Murray Creek Road; 1.8 miles east of Pope Road in San Andreas 351 Comment
  UCR235618  Bromus laevipes George K. Helmkamp, E. A. Helmkamp 2012-5-15 18962 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 Comment
  UCR238441  Galium aparine George K. Helmkamp, E. A. Helmkamp 2012-4-4 18695 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238449  Claytonia perfoliata subsp. perfoliata George K. Helmkamp, E. A. Helmkamp 2012-4-4 18703 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR241328  Conyza canadensis George K. Helmkamp, E. A. Helmkamp 2012-9-21 19885 Calaveras Eastern San Joaquin Valley, Jenny Lind Road (Co. Rd J14), 0.2 mile south of its junction with CA-26, WSW of Rancho Calaveras 99 Comment
  UCR241332  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 mile south of its junction with CA-26, WSW of Rancho Calaveras 99 Comment
  UCR241736  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2012-5-31 19115 Calaveras Northern Sierra Nevada Mountains, Lily Gap Road, 0.9 mile northeast of its junction with Winton Road, 8.1 km NE (60 deg. ) of West Point 1133 Comment
  UCR241759  Kickxia George K. Helmkamp, E. A. Helmkamp 2012-2-3 18525 Calaveras San Joaquin Valley/Sierra Nevada Foothills, junction of Paloma Road and Gillam Road, NE of Valley Springs & SE of Pardee Reservoir 285 Comment
  UCR242601  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-6-17 17570 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 0.8 mile northeast of CA-26 at West Point 977 Comment
  UCR242609  Vicia americana George K. Helmkamp, E. A. Helmkamp 2011-6-17 17562 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 0.8 mile northeast of CA-26 at West Point 977 Comment
  UCR242625  Madia yosemitana George K. Helmkamp, E. A. Helmkamp 2012-5-31 19114 Calaveras Northern Sierra Nevada Mountains, Lily Gap Road, 0.9 mile northeast of its junction with Winton Road, 8.1 km NE (60 deg. ) of West Point 1133 Comment
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Nov 1 2018
  UCR242643  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-6-17 17558 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 3.7 miles northeast of CA-26 at West Point 1012 Comment
  UCR242827  Trifolium microcephalum George K. Helmkamp, E. A. Helmkamp 2011-6-17 17578 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26, 2.7 road miles northwest (1.7 air miles, 312 deg. ) of West Point 802 Comment
  UCR245584  Juncus acuminatus George K. Helmkamp, Amy Barnes 2013-9-24 22348 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR245599  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2012-5-31 19107 Calaveras Northern Sierra Nevada Mountains, Winton Road, 4.1 miles east of its junction with CA-26, NE of West Point 1072 Comment
  UCR248492  Trifolium ciliolatum George K. Helmkamp, E. A. Helmkamp 2012-5-31 19093 Calaveras Northern Sierra Nevada Mountains Foothills, CA-26 east of Mokelumne Hill, at the crossing of the South Fork Mokelumne River 614 Comment
  UCR249886  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, Mary Alice Barnes 2013-5-17 20644 Calaveras Northern Sierra Nevada Mountains Foothills, Along CA Hwy 26, 0.4 mile northeast of its junction with Campo Seco Turnpike Road, SW of Mokelumne Hill 438 Comment
  UCR249888  Clarkia biloba subsp. biloba George K. Helmkamp, Mary Alice Barnes 2013-5-17 20637 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26, 0.3 mile northeast of Paloma Road, SW of Mokelumne Hill 505 Comment
  UCR249942  Eschscholzia caespitosa George K. Helmkamp 2013-3-14 20176 Calaveras Central Sierra Nevada Foothills, Along the north side of CA-26 just east of the west junction with Lime Creek Road 223 Comment
  UCR250092  Festuca perennis George K. Helmkamp, Elizabeth Helmkamp 2013-3-26 20198 Calaveras Northern Sierra Nevada Mountains Foothills, Along CA-26, 5.1 miles southwest of Mokelumne Hill 393 Comment
  UCR250624  Madia rammii George K. Helmkamp, Mary Alice Barnes 2013-4-24 20399 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 1.9 miles east of its junction with CA-26 in West Point 652 Comment
  UCR250671  Scleranthus annuus subsp. annuus George K. Helmkamp, Mary Alice Barnes 2013-4-24 20416 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 1.9 miles east of its junction with CA-26 in West Point 652 Comment
  UCR250679  Achillea millefolium George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20690 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
  UCR252538  Lupinus formosus var. formosus George K. Helmkamp, Amy Barnes 2013-9-24 22355 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR253250  Torilis arvensis George K. Helmkamp, Amy Barnes 2013-9-23 22316 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
  UCR253578  Madia elegans subsp. vernalis George K. Helmkamp, Amy Barnes 2013-9-23 22303 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 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
  UCR256996  Lupinus nanus George K. Helmkamp 2014-5-17 22882 Calaveras Sierra Nevada Mountains Foothills, along CA-26, 2.6 miles northeast of CA-49 at Mokelumne Hill 518 Comment
  UCR257041  Aegilops triuncialis George K. Helmkamp 2014-5-17 22883 Calaveras Sierra Nevada Mountains Foothills, along CA-26, 2.6 miles northeast of CA-49 at Mokelumne Hill 518 Comment
  UCR257207  Cynosurus echinatus George K. Helmkamp 2014-5-17 22908 Calaveras Sierra Nevada Mountains Foothills, Happy Valley, just east of Mokelumne Hill, along CA-26 at the west junction with Jesus Maria Road 524 Comment
  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
  UCR87696  Lithophragma campanulatum George K. Helmkamp, E. A. Helmkamp 1995-6-22 s.n. Calaveras Sierra Nevada Mtns, along Calif. Hwy 4, 2.5 mi NE of Arnold 1479 Comment
  UCR88335  Collomia grandiflora George K. Helmkamp, E. A. Helmkamp 1995-6-22 95 4 22 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
  SEINET7249051  Sanicula crassicaulis George K. Helmkamp, Elizabeth Helmkamp 2013-1 Calaveras Comment
  CDA25791  Abutilon theophrasti G. K. Helmkamp, E. A. Helmkamp 2008-10-14 14263 Colusa Sacramento Valley; Along River Road (generally following the Sacramento River), 8.4 miles north of Colusa. Comment
  CDA36216  Marrubium vulgare G. K. Helmkamp, E. A. Helmkamp 2009-5-2 14757 Colusa Inner North Coast Ranges; Along CA-16, 1.8 miles north of the Yolo County line. Comment
  RSA0115435  Raphanus sativus George K. Helmkamp, Elizabeth Helmkamp 2014-1-4 22509 Colusa Sacramento Valley: along CA-20 at Sycamore Cutoff, 1.3 miles west of the Sacramento River crossing. 20 Comment
  UCR201551  Baccharis pilularis George K. Helmkamp, E. A. Helmkamp 2008-10-14 14260 Colusa Sacramento Valley, along River Road (generally following the Sacramento River), 1.1 miles north of Colusa 18 Comment
  UCR206369  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2009-3-11 14367 Colusa Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams, on the north side of Salt Creek 162 Comment
  UCR206383  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2009-5-20 14753 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
  UCR206539  Brassica rapa George K. Helmkamp, E. A. Helmkamp 2009-1-31 14313 Colusa Sacramento Valley, junction of Moon Bend Road and CA-20 at the south end of the city of Colusa 23 Comment
  UCR206676  Stellaria media George K. Helmkamp, E. A. Helmkamp 2009-1-31 14321 Colusa Sacramento Valley, Jameson Road 1.3 miles north of its junction with Lurline Road and south of Harbison Road, generally west of the city of Colusa 16 Comment
  UCR206710  Cercocarpus betuloides var. betuloides George K. Helmkamp, E. A. Helmkamp 2009-3-17 14397 Colusa Inner North Coast Ranges Foothills, along CA-16 and Bear Creek, 7.0 miles south of the junction with CA-20; just north of the Yolo County line 194 Comment
  UCR206722  Castilleja foliolosa George K. Helmkamp, E. A. Helmkamp 2009-3-17 14394 Colusa Inner North Coast Ranges Foothills, along CA-16 and Bear Creek, 7.0 miles south of the junction with CA-20; just north of the Yolo County line 194 Comment
  UCR233452  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2011-4-1 17118 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 1.8 miles southeast of Sites 77 Comment
  UCR15612  Heterotheca oregona George K. Helmkamp 1978-7-14 s.n. Del Norte North Coast, At edge of Smith River, four miles from the ocean 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-BC226935  Erythranthe moniliformis George K. Helmkamp; William Barnes 2010-9-4 16924 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-BC227270  Polypodium calirhiza George K. Helmkamp; E. A. Helmkamp 2012-5-3 18900 El Dorado Northern Sierra Nevada Mountains Foothills: Forebay Road north of Pollock Pines, at the south side of the bridge over the South Fork American River 591 Comment
  CAS-BOT-BC249067  Vulpia microstachys George K. Helmkamp; E. A. Helmkamp 2012-5-18 19001 El Dorado Northern Sierra Nevada Mountains: junction of Bonnetti Road (Capps Crossing Rd.) and Mormon Emigrant Trail, east of Jenkinson Lake 1261 Comment
  CAS-BOT-BC438805  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
  CAS-BOT-BC520336  Epilobium canum George K. Helmkamp; E. A. Helmkamp 2012-9-17 19854 El Dorado Northern Sierra Nevada Mountains Foothills: along Forebay Rd, 7.7 mi N of jct with Pony Express Rd in Pollock Pines 694 Comment
  CHSC114146  Leptosiphon bicolor G. K. Helmkamp; E. A. Helmkamp 2010-4-24 15939 El Dorado Sierra Nevada Mountains Foothills: Oak Ridge Road just eas of its junction with Blend-O-Green Way, jct is north of Green Valley Road. 390 Comment
  CHSC118020  Adiantum jordanii G. K Helmkamp; E. A Helmkamp 2007-4-30 11897 El Dorado Foothills, Northern Sierra Nevada Mountains; hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 510 Comment
  RSA0011957  Hackelia nervosa George K. Helmkamp, E. Helmkamp 2011-9-13 18247 El Dorado Mormon Emigrant Trail, 22.6 miles southeast of Jenkinson s Lake, between Silver Fork Road and Hwy 88, 0.2 mi. NNE (23 deg ) of Alder Hill 2274 Comment
  RSA0011969  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2011-9-13 18265 El Dorado Foster Meadow Road, 0.6 miles north of its junction with CA-88 2136 Comment
  RSA0012130  Navarretia prolifera subsp. lutea George K. Helmkamp, E. A. Helmkamp 2011-7-7 17634 El Dorado Park Creek Road, 0.4 mile east of its junction with (Co. Rd. E16) Sly Park Road, 1.4 mi. SE (111deg.) of Pollock Pines 1290 Comment
  RSA0012159  Mimulus viscidus George K. Helmkamp, E. A. Helmkamp 2011-7-7 17667 El Dorado Capps Crossing Road, 5.2 miles south of its junction with Mormon Emigrant Trail 1409 Comment
  RSA0013389  Erigeron breweri George K. Helmkamp, E. A. Helmkamp 2010-9-1 16895 El Dorado Northern Sierra Nevada Mountains: Mehrten Springs Road, 0.6 mile north of its junction with CA-88 2018 Comment
  RSA0028448  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2009-5-4 14596 El Dorado Sly Park Road, 0.3 miles southwest of its junction with Mormon Emigrant Trail 1067 Comment
  RSA0035752  Arabis rectissima var. rectissima George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-15 20870 El Dorado Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  RSA0037292  Poa secunda George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-19 20894 El Dorado Mormon Emigrant Trail, 8.3 miles east of its junction with Hwy E-16 at Jenkinsons Lake 1456 Comment
  RSA0045147  Phacelia hastata var. hastata George K. Helmkamp, E. A. Helmkamp 2012-7-6 19329 El Dorado Ice House Road at Ice House village, 10.5 miles north of its junction with US-50. 1677 Comment
  RSA0055952  Delphinium hansenii George K. Helmkamp, Amy Barnes 2014-5-8 22867 El Dorado Sierra Nevada Mountains Foothills: along CA-49 near Ramales Lane, c. 0.7 mile north of Union Mine Road junction. 282 Comment
  RSA0064548  Ranunculus muricatus George K. Helmkamp, E. A. Helmkamp 2008-4-25 13321 El Dorado Junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown. 674 Comment
  RSA0114572  Vicia sativa subsp. nigra George K. Helmkamp, Mary Alice Barnes 2013-4-30 20439 El Dorado Sierra Nevada Mountains: Mormon Emigrant Trail, 70 meters northwest of its junction with Park Creek Road, 1 mile NW of Bryants. 1311 Comment
  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
  RSA714445  Piptatherum miliaceum George K. Helmkamp, E. A. Helmkamp 2005-7-11 9677 El Dorado Northern Sierra Nevada Foothills: Cameron Park (E. of Sacramento, along US Highway 50); corner of Santos Street and Santos Court Road. Creekside bank in the city. 370 Comment
  RSA715293  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
  RSA747032  Plectritis macrocera George K. Helmkamp, E. A. Helmkamp 2007-5-7 11966 El Dorado Pedro Hills Road, 0.5 mile west of its junction with Calif. Hwy 49, junction of roads 5.3 miles south of Cool 311 Comment
  RSA748982  Gilia tricolor subsp. diffusa George K. Helmkamp, E. A. Helmkamp 2007-4-20 11764 El Dorado 2.2 miles north of US-50 on Bass Lake Road, overlooking Bass Lake; between El Dorado Hills and Cameron Park 384 Comment
  RSA748986  Clarkia biloba subsp. biloba George K. Helmkamp, E. A. Helmkamp 2007-5-5 11931 El Dorado along CA-49, 3.7 miles northwest of Placerville 549 Comment
  RSA755561  Juglans hindsii George K. Helmkamp, E. A. Helmkamp 2009-8-21 15516 El Dorado Lake Oaks Mobile Home Park, Diamond Springs; Patterson Road, 0.1 mile south of CA-49 527 Comment
  RSA755575  Clarkia biloba subsp. biloba George K. Helmkamp, E. A. Helmkamp 2009-5-24 14761 El Dorado Sand Ridge Road, 0.2 miles east of the Cosumnes River and CA-49 288 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
  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
  RSA757541  Horkelia fusca var. parviflora George K. Helmkamp, Amy Barnes 2009-7-8 15162 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
  RSA781290  Eriophyllum lanatum var. croceum George K. Helmkamp, E. A. Helmkamp 2009-6-29 15073 El Dorado Ice House Road, 7.6 miles north of its junction with CA-50, c. 10.5 air miles NE (74deg.) of Pollock Pines 1642 Comment
  RSA781311  Stipa George K. Helmkamp, E. A. Helmkamp 2009-7-22 15268 El Dorado Wrights Lake Road, 1.2 miles south of Wrights Lake 2073 Comment
  RSA781446  Linanthus bicolor George K. Helmkamp, E. A. Helmkamp 2010-4-24 15939 El Dorado Oak Ridge Road just east of its junction with Blend-O-Green Way, jct. is north of Green Valley Road 390 Comment
  RSA781448  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2010-4-23 15934 El Dorado Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  RSA781943  Conyza bonariensis George K. Helmkamp, E. A. Helmkamp 2009-10-17 15691 El Dorado Diamond Springs, Lake Oaks Mobile Home Park south of Patterson Dr. and CA-49 524 Comment
  RSA785459  Phyllodoce breweri George K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16586 El Dorado Southernmost point of Wright's Lake, 5.6 mi. NE (33 degrees) of Kyburz. 2085 Comment
  RSA785622  Gilia capitata subsp. mediomontana George K. Helmkamp, Mary Alice Barnes, Mary Jane Ganibe 2010-7-6 16449 El Dorado Silver Fork Road, 1.9 miles south of its junction with US-50 in Kyburz. 1473 Comment
  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
  RSA791424  Galium sparsiflorum subsp. sparsiflorum George K. Helmkamp, E. A. Helmkamp 2011-7-7 17658 El Dorado Northern Sierra Nevada Mountains: Capps Crossing Road, 5.2 miles south of its junction with Mormon Emigrant Trail 1409 Comment
  RSA791602  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2009-6-29 15076 El Dorado Ice House Road, 7.6 miles north of its junction with CA-50, c. 10.5 air miles NE (74 ) of Pollock Pines 1642 Comment
  RSA791762  Horkelia fusca subsp. parviflora George K. Helmkamp, E. A. Helmkamp 2006-7-7 10824 El Dorado Northern Sierra Nevada Mountains.: Wright's Lake Road, 3.2 miles north of Highway US-50, northeast of Kyburz 1982 Comment
  RSA794567  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 with CA-88 2018 Comment
  RSA794943  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2011-9-1 18200 El Dorado Silver Fork Road, 0.9 miles south of its junction with US-50 in Kyburz 1280 Comment
  RSA795069  Rorippa curvipes var. truncata George K. Helmkamp, E. A. Helmkamp 2011-9-23 18316 El Dorado along Ice House Road, 8.6 miles north of its junction with US-50 1613 Comment
  SBBG127565  Navarretia leptalea subsp. leptalea G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15267 El Dorado Wrights Lake Rd, 1.2 mi S of Wrights Lake 2073 Comment
  SD197654  Ligusticum grayi G. K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13921 El Dorado Northern Sierra Nevada Mountains: Dark Lake, beside Wright's Lake Road, 0.4 miles northwest of the entrance to Wright's Lake. 2134 Comment
  SD212736  Veronica serpyllifolia subsp. humifusa G. k. Helmkamp, Elizabeth Helmkamp 2006-5-1 10289 El Dorado Corner of Pleasant Valley Road and Patterson Drive; west end of Diamond Springs. 537 Comment
  SD234841  Symphyotrichum foliaceum var. parryi G. K. Helmkamp, E. A. Helmkamp 2007-8-4 12712 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail at Leek Spring meadow, about 2 miles NW of CA-88 (Tragedy Spring 7.5' Q) 2238 Comment
  SD235001  Ranunculus alismifolius var. alismellus G. K. Helmkamp, E. A Helmkamp 2007-5-31 12221 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road, north of US-50 at the Lyon's Creek trailhead and creek crossing (Pyramid Peak 7.5' Q) 2058 Comment
  SD235043  Penstemon newberryi var. newberryi G. K. Helmkamp, E. A. Helmkamp 2008-7-11 13758 El Dorado Northern Sierra Nevada Mountains: Tragedy Spring Road, 9.0 miles southwest of Kirkwood and 0.1 mile north of its junction with CA-88. 2421 Comment
  SD236121  Cyperus niger G. K. Helmkamp, E. A. Helmkamp 2006-11-15 11579 El Dorado Foothills, northern Sierra Nevada Mountains: lake Oaks mobile home park west of Diamond Springs south junction of Pleasant Valley Road and Patterson Drive 537 Comment
  SD236150  Panicum dichotomiflorum G. K. Helmkamp, Elizabeth Helmkamp 2005-9-1 9834 El Dorado Northern Sierra Nevada Foothills: E of Sacramento; Sand Canyon Road, 0.3 mi E of CA Highway 49 and Logtown Ridge 280 Comment
  SD236184  Erigeron bonariensis G. K. Helmkamp, Elizabeth Helmkamp 2005-11-12 10020 El Dorado Northern Sierra Nevada Foothills: [E of Sacramento, ca. 3 air mi NNW of Placerville]; South Fork of American River on the W side of CA Highway 193 291 Comment
  SD236402  Sanguisorba minor subsp. muricata G. K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9866 El Dorado Northern Sierra Nevada Foothills: E of Sacramento; Sly Park Road (County Highway E-16), ca 2 mi E of Pleasant Valley. 854 Comment
  SD236416  Collinsia tinctoria G. K. Helmkamp, E. A. Helmkamp 2008-6-3 13572 El Dorado Sierra Nevada Mountains: Forbay Road, 7.1 miles northwest of CA-50 (road junction in Pollock Pines), no-outlet road leading to the South Fork of the American River 715 Comment
  SD237348  Pseudobahia heermannii G. K. Helmkamp, E. A. Helmkamp 2010-4-24 15941 El Dorado Sierra Neveda Mountains Foothills: Oak Ridge Road just east of its junction with Blend-O-Green Way, jct. is north of Green Valley Road. 390 Comment
  SD237392  Streptanthus tortuosus var. orbiculatus G. K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16577 El Dorado Northern Sierra Nevada Mountains: southeast side of Wright's Lake, 5.8 miles NE (34a^z) of Kyburz (Pyramid Peak 7.5'Q) 2085 Comment
  SD237404  Stellaria longipes subsp. longipes G. K. Helmkamp, Amy Barnes 2009-7-8 15148 El Dorado Sierra Nevada Mountains: Wright's Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House (Riverton 7.5'Q) 1654 Comment
  SD237424  Lathyrus sulphureus G. K. Helmkamp, E. A. Helmkamp 2010-5-13 16012 El Dorado Sierra Nevada Mountains Foothills: Mosquito Road, 4.4 miles northeast of its junction with US-50 in Placerville. 619 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
  SD237610  Castilleja tenuis G. K. Helmkamp, E. A. Helmkamp 2009-7-22 15274 El Dorado Sierra Nevada Mountains: Wrights Lake Road, 1.2 miles south of Wrights Lake (Pyramid Peak 7.5'Q) 2073 Comment
  SD237627  Penstemon rydbergii var. oreocharis G. K. Helmkamp, E. A. Helmkamp 2010-7-23 16620 El Dorado Sierra Nevada Mountains: Forestry Route 42, 0.2 mile west of its junction with Wright's Lqake Road and beside Silver Creek, 4 miles NE (31a^z) of Kyburz (Kyburz 7.5'Q) 2021 Comment
  SD239562  Asclepias speciosa G. K. Helmkamp, E. A. Helmkamp 2009-6-29 15063 El Dorado Sierra Nevada Mountains Foothills: Ice House Road, 0.2 mil;es north of its junction with CA-50, c. 7.3 miles ENE (83a^z) of Pollock Pines (Riverton 7.5'Q) 989 Comment
  SD239671  Campanula prenanthoides George K. Helmkamp, E. A. Helmkamp 2011-7-30 17916 El Dorado Northern Sierra Nevada Mountains: along North-South Road, 1.6 miles orth of its junction with Omo Ranch Road, 0.95 mi NNW (331a^z) of Omo Ranch Road. Jct. with Hwy 88 (Caldor 7.5'Q) 1460 Comment
  SD239832  Epilobium glaberrimum subsp. glaberrimum George K. Helmkamp, William Barnes. 2010-9-4 16920 El Dorado Northern Sierra Nevada Mountains: Mehrten Spring Road and continuing on Cat Creek Road, 4.7 miles northwest of CA-88; Middle Fork of Consumnes River (Peddler Hill 7.5'Q) 619 Comment
  SD240871  Lapsana communis George K. Helmkamp, E. A. Helmkamp 2011-10-13 18423 El Dorado Northern Sierra Nevada Mountains: Pony Express Trail, 0.9 mile east of Sly Park Road in Pollock Pines. 1220 Comment
  SD241090  Limnanthes alba subsp. versicolor George K. Helmkamp, E. A. Helmkamp 2011-5-5 17178 El Dorado Northern Sierra Nevada Moutains Foothills: along Pleasant Valley Road, 0.7 mile norwest of Pleasant Valley (Camino 7.5'Q) 750 Comment
  SD243176  Navarretia leptalea subsp. bicolor George K. Helmkamp, E. A. Helmkamp 2010-9-1 16893 El Dorado Northern Sierra Nevada Mountains: Mehrten Springs Road, 0.6 mile north of its junction with CA-88. Roadside ditch. 2018 Comment
  SD247504  Castilleja tenuis George K. Helmkamp, Elizabeth A. Helmkamp 2013-7-6 19359 El Dorado Northern Sierra Nevada Mountains: Robbs Peak Road a the junction with Ice Hoise Road, 22 miles north of US-50 (Robbs Peak 7.5'Q) 2078 Comment
  SD248319  Eucephalus breweri George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22083 El Dorado Northern Sierra Nevada Mountains: Mehrten Spring Road, 0.5 mile north of CA-88 / Carson Pass Hwy. Open soil opposite the wet slope. 1793 Comment
  SD254619  Lupinus lepidus var. sellulus George K. Helmkamp, Amy Barnes 2014-8-11 22995 El Dorado Northern Sierra Nevada Mountains; Ice House Road, 1.7 miles south of Crystal Basin Information Station. 1609 Comment
  SEINET11261897  Collomia heterophylla George Helmkamp, E. A. Helmkamp 2011-7-30 17924 El Dorado Northern Sierra Nevada Mountains: North-South Road, 1.6 miles north of its junction with Omo Ranch Road, .95 mi. NNW (3511/4) of Omo Ranch Rd. jct. with Hwy 88 (Caldor 7.5' Q.); 0 1460 Comment
  SEINET11261922  Galium trifidum var. pacificum George Helmkamp, E. A. Helmkamp 2011-7-30 17907 El Dorado Northern Sierra Nevada Mountains: Omo Ranch Road, 2.25 mi NW (2951/4) of jct. with Hwy 88. 7.2 miles southeast of OMO Ranch. (Caldor 7.5' Q.).; 0 1346 Comment
  SEINET13203107 Image available Geranium dissectum George K. Helmkamp, Elizabeth Helmkamp 2013-1 20446 El Dorado Sierra Nevada Mountains Foothills: Camp Creek along Happy Valley Cutoff Road, 0.6 mile east of junction with Mt. Aukum Road, 1.35 air miles NE (62 deg. ) of Somerset (Camino 7.5' Q.) 565 Comment
  SEINET13384150 Image available Panicum acuminatum var. acuminatum George K. Helmkamp, Amy Barnes 2012-1 19658 El Dorado Northern Sierra Nevada Mountains: northwest side of Ice House Road, 0.2 mile north of its junction with Forest Route 13N20, c 1.3 miles northeast of Wentworth Springs Road 1786 Comment
  SEINET2441256  Phacelia imbricata subsp. imbricata George K. Helmkamp, E. A. Helmkamp 2010-5-14 16022 El Dorado Sierra Nevada Mountains Foothills: along CA-16 (Mt. Aukum Rd.), 1.8 miles northeast of Somerset. (Camino 7.5' Q.). 567 Comment
  SEINET2445703  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 jct with US-50 in Placerville. (Slate Mountain 7.5' Q). 500 Comment
  SEINET3245853  Layia fremontii G. K. Helmkamp, E. A. Helmkamp 2007-1 11682 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
  SEINET3271580 Image available Agrostis George K. Helmkamp, E. A. Helmkamp 2009-8-19 15513 El Dorado Sierra Nevada Mountains; Wright's Lake Road, 8.6 miles north of its upper junction with Ice House Road 1785 Comment
  SEINET3271609 Image available Lotus micranthus George K. Helmkamp, E. A. Helmkamp 2007-4-29 11873 El Dorado Foothills, Northern Sierra Nevada Mountains; Lake Oaks mobile home park, Diamond Springs 524 Comment
  SEINET3282768 Image available Nemophila parviflora var. parviflora George K. Helmkamp, E. A. Helmkamp 2007-4-30 11885 El Dorado Foothills, Northern Sierra Nevada Mountains; hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  SEINET3821902 Image available Poa secunda George K. Helmkamp, E. A. Helmkamp 2012-5-18 19002 El Dorado Northern Sierra Nevada Mountains, junction of Bonnetti Road (Capps Crossing Rd.) and Mormon Emigrant Trail, east of Jenkinson Lake (Sly Park 7.5' Q) 1260 Comment
  SEINET3828494  Ericameria arborescens George K. Helmkamp, E. A. Helmkamp 2010-1 16985 El Dorado Northern Sierra Nevada Mountains Foothills: Ice House Road, 1.2 miles south of its junction with Peavine Road, 0.9 mi (air) N of I-50 (Riverton) 1448 Comment
  SEINET3860250  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.; 0 1328 Comment
  SEINET3860406  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2010-7-23 16603 El Dorado Northern Sierra Nevada Mountains: trailhead, at the east end of Wright's Lake, 1.2 miles north of the visitor's center at the lake entrance.; 0 2127 Comment
  SEINET4691402  Erigeron breweri George K. Helmkamp, E. A. Helmkamp 2010-1 16720 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
  SEINET4691434  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, E. A. Helmkamp 2010-1 16804 El Dorado Northern Sierra Nevada Mountains: Foster Meadow Road 0.6 mile west of Mormon Emigrant Trail in the Leek Spring area. 2232 Comment
  SEINET4691684  Madia exigua George K. Helmkamp, E. A. Helmkamp 2011-1 17412 El Dorado Northern Sierra Nevada Mountains Foothills: N edge of Placerville, west end of Mariposite Lane, above junction with Bedford Ave. 637 Comment
  SEINET6654054  Lupinus latifolius var. columbianus George K. Helmkamp 2007-7-7 12460 El Dorado Northern Sierra Nevada Mountains: along CA-89, 5.4 miles northwest of Luther Pass in the Grass Lake area.; 0 2018 Comment
  SEINET8466112 Image available Brodiaea elegans G. K. Helmkamp, EA. Helmkamp 2009-6-25 15038 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
  SEINET998819  Nicotiana acuminata var. multiflora G. K. Helmkamp, E. A. Helmkamp 2006-1 11547 El Dorado Northern Sierra Nevada Mountains Foothills: 0.6 mile northwest of Pleaseant Valley along Pleasant Valley Road 756 Comment
  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
  UCD103417  Geranium molle G. K. Helmkamp; Elizabeth Helmkamp 2006-4-25 10214 El Dorado Northern Sierra Nevada Foothills: E of Sacramento, SW of Placerville. Forni road between US Highway 50 and Diamond Springs, at Weber Creek. 488 Comment
  UCD103431  Geranium molle G. K. Helmkamp; E. A. Helmkamp 2007-4-29 11874 El Dorado Northern Sierra Nevada Mountains. Lake Oaks mobile home park, Diamond Springs. 524 Comment
  UCD103680  Gayophytum diffusum subsp. parviflorum G. K. Helmkamp; E. A. Helmkamp 2007-9-26 13015 El Dorado Northern Sierra Nevada Mountains: Bonetti Road, 1.1 miles south of its junction with Mormon Emigrant Trail, just east of Jenkinson Lake. 1189 Comment
  UCD104337  Clarkia biloba subsp. biloba G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-7 10648 El Dorado Northern Sierra Nevada foothills. Hiking trail, 3.5 miles NW of Placerville along Hwy. CA-49. 512 Comment
  UCD105612  Erodium botrys G. K. Helmkamp; E. A. Helmkamp 2007-4-30 11891 El Dorado Northern Sierra Nevada Mountains: hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  UCD105618  Epilobium ciliatum G. K. Helmkamp; E. A. Helmkamp 2006-7-12 10969 El Dorado Northern Sierra Nevada Mtns: Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2104 Comment
  UCD105620  Epilobium ciliatum G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11190 El Dorado Northern Sierra Nevada Mountains. Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road. 2250 Comment
  UCD106443  Lathyrus sulphureus G. K. Helmkamp; Elizabeth Helmkamp 2006-5-20 10510 El Dorado Northern Sierra Nevada Foothills: ca. 5 air mi off CA Hwy 193, E of Georgetown; 1.7 mi. N of Wentworth Springs Road on Bottlehill Road (junction just E of Balderson Station). 973 Comment
  UCD109191  Trifolium monanthum G. K. Helmkamp; Elizabeth Helmkamp 2007-5-1 11928 El Dorado Northern Sierra Nevada Mountains: along Hwy CA-49, 1.5 miles northwest of US-50 in Placerville. 548 Comment
  UCD109766  Trifolium hirtum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-4 10293 El Dorado Northern Sierra Nevada. East end of Diamond Springs, 0.1 mile north of the junction of Pleasant Valley Road and Hwy CA-49. 543 Comment
  UCD109970  Alnus incana subsp. tenuifolia G. K. Helmkamp; E. A. Helmkamp 2007-9-11 12945 El Dorado Northern Sierra Nevada Mountains. Forest Road between Wright's Lake and Ice House Reservoir; 1.2 miles west of its junction with Wright's Lake Road. 2049 Comment
  UCD110906  Viola lobata subsp. lobata G. K. Helmkamp; E. 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
  UCD111858  Ficus carica G. K. Helmkamp; E. A. Helmkamp 2007-5-7 11970 El Dorado Northern Sierra Nevada Mountains. Along CA-49, 6.1 miles NW of Placerville. 454 Comment
  UCD112102  Ceanothus cuneatus var. cuneatus G. K. Helmkamp; E. A. Helmkamp 2007-3-11 11611 El Dorado northern Sierra Nevada Mountains; Salmon Falls Road, 0.2 mile northeast of Sweetwater Creek, SSW of Pilot Hill. 122 Comment
  UCD113061  Drymocallis glandulosa G. K. Helmkamp; E. A. Helmkamp 2007-4-29 11876 El Dorado Northern Sierra Nevada Mountains: Lake Oaks mobile home park, Diamond Springs. 524 Comment
  UCD113226  Malus pumila G. K. Helmkamp; E. A. Helmkamp 2007-3-22 11660 El Dorado Northern Sierra Nevada Mountains: Bucks Bar Road, 4.4 miles south of Pleasant Valley Road at the junction of Sand Ridge Road. 628 Comment
  UCD113573  Horkelia tridentata var. tridentata G. K. Helmkamp; E. A. Helmkamp 2007-6-6 12261 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail, 8.3 miles east of its junction with Sly Park Road. 1616 Comment
  UCD114517  Cardamine hirsuta G. K. Helmkamp; E. A. Helmkamp 2007-3-10 11603 El Dorado Northern Sierra Nevada Mountains; Rattlesnake Bar Road, 3 miles southwest of CA-49, SW of Pilot Hill. 390 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
  UCD117711  Gilia capitata subsp. mediomontana G. K. Helmkamp; Elizabeth A. Helmkamp 2006-5-31 10592 El Dorado Northern Sierra Nevada foothills along Hwy US-50, 0.6 mile east of White Hall. 1055 Comment
  UCD118358  Ipomopsis aggregata subsp. aggregata G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11036 El Dorado Northern Sierra Nevada Mtns 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd. 2226 Comment
  UCD119955  Nemophila spatulata G. K. Helmkamp; Elizabeth Helmkamp 2007-6-20 12406 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail 2.0 miles west of its junction with Hwy CA-88 and at Singleton Springs. 2247 Comment
  UCD120006  Nemophila heterophylla G. K. Helmkamp; Elizabeth Helmkamp 2006-5-18 10467 El Dorado Northern Sierra Nevada: S side of Peavine Ridge; along Meadow Canyon Road, 3.4 mi. W. of its junction with Ice House Canyon Road (N of US Hwy 50 and SSE of Union Valley Reservoir). 1189 Comment
  UCD120477  Phacelia hastata subsp. hastata G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11174 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road. 2250 Comment
  UCD120492  Phacelia hastata subsp. compacta G. K. Helmkamp; E. A. Helmkamp 2006-7-31 11044 El Dorado Northern Sierra Nevada Mountains: along Wright's Lake Road (Forestry Route 4) 3.3 miles north of Hwy US-50. 2049 Comment
  UCD121240  Apocynum androsaemifolium G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11028 El Dorado Northern Sierra Nevada Mtns, North Truckee River Rd. 1.4 miles north of CA-50 and ca. 6 miles south of Lake Tahoe. (Echo Lake 7.5'Q). 2009 Comment
  UCD121333  Asclepias fascicularis G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12583 El Dorado Northern Sierra Nevada Mountains: Traverse Creek Road at the crossing of Traverse Creek; about 2 miles southeast of its junction with CA-193. 732 Comment
  UCD122788  Mimulus nanus var. jepsonii G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10842 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz. 2049 Comment
  UCD123637  Collinsia parviflora G. K. Helmkamp; E. A. Helmkamp 2006-8-3 10994 El Dorado Northern Sierra Nevada Mountains: Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50. 2103 Comment
  UCD128914  Antennaria corymbosa G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10879 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 6.1 miles north of Hwy US-50; at the junction with the road from Ice House Reservoir. 2030 Comment
  UCD130096  Centaurea solstitialis G. K. Helmkamp; E. A. Helmkamp 2006-10-20 11554 El Dorado Northern Sierra Nevada Mountain Foothills; 0.6 mile northwest of Pleasant Valley along Pleasant Valley Road. 756 Comment
  UCD132214  Eriophyllum lanatum var. grandiflorum G. K. Helmkamp; Elizabeth A. Helmkamp 2006-5-31 10593 El Dorado Northern Sierra Nevada: along Hwy US-50, 0.6 mile east of White Hall. 1055 Comment
  UCD133340  Hypochaeris glabra G. K. Helmkamp; E. A. Helmkamp 2007-4-20 11754 El Dorado Northern Sierra Nevada Mountains; junction of French Creek Road and Lost Creek Road, just north of Frenchtown. 366 Comment
  UCD134206  Madia elegans G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12565 El Dorado Northern Sierra Nevada Mountains: Rock Creek Road, 7.1 miles east of its junction with CA-193. 567 Comment
  UCD134208  Madia elegans G. K. Helmkamp; E. A. Helmkamp 2007-9-2 12884 El Dorado Northern Sierra Nevada Mountains. Grizzly Flat Road 10.4 miles ESE of Somerset. 1107 Comment
  UCD135117  Pseudotsuga menziesii var. menziesii G. K. Helmkamp; Elizabeth A. Helmkamp 2006-5-31 10582 El Dorado Northern Sierra Neveda Mountains, Wright's Lake Road just north of Hwy. US-50. 1664 Comment
  UCD135840  Silybum marianum G. K. Helmkamp; E. A. Helmkamp 2007-5-5 11941 El Dorado Northern Sierra Nevada Mountains: along CA-49, 3.7 miles northwest of Placerville. 548 Comment
  UCD136647  Symphyotrichum spathulatum var. spathulatum G. K. Helmkamp; E. A. Helmkamp 2006-8-24 11285 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.8 miles north of Wentworth Springs Road. 1616 Comment
  UCD137738  Pentagramma triangularis G. K. Helmkamp; Elizabeth Helmkamp 2006-4-27 10226 El Dorado Northern Sierra Neveda Foothills: 2.1 mi. S of Pleasant Valley Road along French Creek Road (SE of Shingle Springs). 369 Comment
  UCD139329  Triteleia ixioides subsp. anilina G. K. Helmkamp; E. A. Helmkamp 2007-5-7 11957 El Dorado Northern Sierra Nevada Mountains: Pedro Hills Road, 0.8 mile west of CA-49, junction of roads 5.3 miles south of Cool. 354 Comment
  UCD140443  Carex hoodii G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10912 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
  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
  UCD60372  Bromus diandrus G. K. Helmkamp; E. A. Helmkamp 2007-5-5 11934 El Dorado Northern Sierra Nevada Mountains: along CA-49, 3.7 miles northwest of Placerville. 549 Comment
  UCD60415  Iris hartwegii subsp. pinetorum G. K. Helmkamp; E. A. Helmkamp 2007-5-9 11988 El Dorado Northern Sierra Nevada Mountains: White Meadow Road, 0.6 mile west of its junction with Ice House Road, c. 0.75 mile NNW of Riverton. 1082 Comment
  UCD63201  Digitaria sanguinalis G. K. Helmkamp; E. A. Helmkamp 2006-10-20 11542 El Dorado Northern Sierra Nevada Mountains Foothills: Bucks Bar Road, 3.9 miles south of Pleasant Valley Road, general vicinity of Somerset. 625 Comment
  UCD63218  Agrostis stolonifera G. K. Helmkamp; E. A. Helmkamp 2007-9-2 12872 El Dorado Northern Sierra Nevada Mountains. Grizzly Flat Road 5.2 miles ESE of Somerset, just west of Coles Station. 957 Comment
  UCD63243  Quercus wislizeni var. wislizeni G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12570 El Dorado Northern Sierra Nevada Mountains: Rock Creek Road, 7.1 miles east of its junction with CA-193. 567 Comment
  UCD63263  Agrostis variabilis G. K. Helmkamp; E. A. Helmkamp 2007-8-21 12786 El Dorado Northern Sierra Nevada Mountains. Ice House Road. 21.3 miles north of CA-50 at Robbs Hut Road. 2078 Comment
  UCD90676  Poa bulbosa G. K. Helmkamp; E. A. Helmkamp 2006-4-13 10189 El Dorado Northern Sierra Nevada Foothills. El Dorado National Forest. Along Hwy. 193, 1 mi. NE of Greenwood. 518 Comment
  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
  UCD98742  Silene lemmonii G. K. Helmkamp; E. A. Helmkamp 2007-5-31 12251 El Dorado Northern Sierra Nevada Mountains; Forestry Route 32, 0.8 mile east of its junction with Ice House Road. 2104 Comment
  UCR15443  Eriogonum baileyi var. baileyi George K. Helmkamp 1977-9-1 s.n. El Dorado Sierra Nevada Mtns., Grass Lake at Luther Pass 2356 Comment
  UCR170243  Epilobium ciliatum subsp. ciliatum George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9900 El Dorado Northern Sierra Nevada Foothills, Wright's Lake Road (Forest Road 4) 2.1 road miles N of US Highway 50 (c. 5-6 mi east of Kyburz) 1854 Comment
  UCR170353  Medicago sativa George K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9861 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
  UCR170367  Rumex acetosella George K. Helmkamp, Elizabeth Helmkamp 2005-8-9 9790 El Dorado Northern Sierra Nevada Foothills, El Dorado National Forest; WSW of Lake Tahoe; 7.4 miles N of Union Reservoir along Ice House Road at the junction of Cheese Camp Road 1765 Comment
  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
  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
  UCR170990  Cardamine pensylvanica George K. Helmkamp, E. A. Helmkamp 2006-3-26 10102 El Dorado Northern Sierra Nevada Foothills, ENE of Sacramento; Chili Bar, at Calif. Highway 193 and the bridge over the South Fork of the American River 296 Comment
  UCR171179  Mimulus layneae George K. Helmkamp, E. A. Helmkamp 2005-7-31 9759 El Dorado Northern Sierra Nevada Foothills, 20 mi WSW of Lake Tahoe; Ice House Road, N of Calif. Highway 50 and 1.5 mi south of junction with Ice House Reservoir 1637 Comment
  UCR171201  Phacelia heterophylla George K. Helmkamp, E. A. Helmkamp 2005-7-11 9707 El Dorado Northern Sierra Nevada Foothills, Pollock Pines area just south of US Highway 50 along County Road #5 1159 Comment
  UCR171243  Chenopodium botrys George K. Helmkamp, E. A. Helmkamp 2005-7-11 9702 El Dorado Northern Sierra Nevada Foothills, Pollock Pines area just south of US Highway 50 along County Road #5 1159 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
  UCR171407  Polygonum aviculare George K. Helmkamp, E. A. Helmkamp 2005-7-11 9679 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
  UCR171537  Typha angustifolia George K. Helmkamp, E. A. Helmkamp 2005-7-31 9730 El Dorado Northern Sierra Nevada Foothills, Junction of Ice House Road and Calif. Highway 50, east of Pollock Pines 1006 Comment
  UCR173158  Veronica arvensis George K. Helmkamp, Elizabeth Helmkamp 2006-4-27 10240 El Dorado Northern Sierra Nevada Foothills, Junction of French Creek Road and Big Canyon Road, 0.5 mi. south of Frenchtown 340 Comment
  UCR173162  Amsinckia lycopsoides George K. Helmkamp, Elizabeth Helmkamp 2006-4-25 10223 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
  UCR173180  Triphysaria eriantha George K. Helmkamp, Elizabeth Helmkamp 2006-4-6 10121 El Dorado Northern Sierra Nevada Foothills, Greenstone Road, c. 0.3 mi N of Pleasant Valley Road (ENE of Shingle Springs and south of US Hwy 50) 457 Comment
  UCR173287  Lupinus nanus George K. Helmkamp, Elizabeth Helmkamp 2006-5-18 10465 El Dorado Northern Sierra Nevada Foothills, S side of Peavine Ridge; along Meadow Canyon Road, 3.4 mi. west of its junction with Ice House Canyon Road (N of US Hwy 50 and SSE of Union Valley Reservoir) 1189 Comment
  UCR173303  Lathyrus nevadensis subsp. nevadensis George K. Helmkamp, Elizabeth Helmkamp 2006-5-18 10475 El Dorado Northern Sierra Nevada Foothills, Spring Valley; Telephone Ridge area, NW of Riverton. Brockliss Canyon Road, about 11 mi. NW of junction with Meadowridge Road and Ice House Canyon Road (SSW of Union Valley Reservior, c. 1.4 air mi. N of US Hwy 50) 1189 Comment
  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
  UCR173481  Cardamine californica George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10541 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
  UCR173489  Ceanothus integerrimus George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10269 El Dorado Northern Sierra Nevada Foothills, Rock Creek Road, 5.7 mi. east of Calif. Hwy 193, N of the South Fork of the American River 427 Comment
  UCR173494  Thysanocarpus curvipes George K. Helmkamp, Elizabeth Helmkamp 2006-4-29 10274 El Dorado Northern Sierra Nevada Foothills, Rock Creek Road, 5.7 mi. east of Calif. Hwy 193, N of the South Fork of the American River 427 Comment
  UCR173592  Oxalis corniculata George K. Helmkamp, Elizabeth Helmkamp 2006-5-1 10288 El Dorado Northern Sierra Nevada foothills, corner of Pleasant Valley Road and Patterson Drive; west end of Diamond Springs 537 Comment
  UCR173657  Juncus bufonius var. bufonius George K. Helmkamp, Elizabeth Helmkamp 2006-5-1 10286 El Dorado Northern Sierra Nevada foothills, corner of Pleasant Valley Road and Patterson Drive; west end of Diamond Springs 537 Comment
  UCR173694  Ranunculus californicus George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10173 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
  UCR173707  Calyptridium monospermum George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-10 10696 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 0.2 mile north of its junction with Wentworth Springs Road 1620 Comment
  UCR173802  Ceanothus prostratus George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10600 El Dorado Northern Sierra Nevada foothills, Mormon Emigrant Trail, 6.0 miles east of its junction with Sly Park Road (Jenkinson Lake) 1055 Comment
  UCR173840  Carex vernacula George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10739 El Dorado Northern Sierra Nevada Mountains, 5.5 miles east of Ice House Road on the road to Wright's Lake 1860 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
  UCR173913  Viola purpurea subsp. integrifolia George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10752 El Dorado Northern Sierra Nevada Mountains, 8 miles east of Ice House Road on the road to Wright's Lake 2000 Comment
  UCR173921  Antirrhinum leptaleum George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10623 El Dorado Northern Sierra Nevada foothills, Rock Creek Road at Dark Canyon, 1.4 miles east of the junction with Calif. Hwy 193 381 Comment
  UCR173952  Hesperochiron pumilus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10762 El Dorado Northern Sierra Nevada Mountains, 1.1 miles west of Wright's Lake 2027 Comment
  UCR173966  Bromus suksdorfii George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10738 El Dorado Northern Sierra Nevada Mountains, 5.5 miles east of Ice House Road on the road to Wright's Lake 1860 Comment
  UCR173968  Carex limosa George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10735 El Dorado Northern Sierra Nevada Mountains, 5.5 miles east of Ice House Road on the road to Wright's Lake 1860 Comment
  UCR173974  Fragaria virginiana George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-10 10675 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 9.1 miles north of Hwy US-50 1662 Comment
  UCR174198  Trifolium dubium George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10604 El Dorado Northern Sierra Nevada foothills, Sly Park Road, 0.3 mile south of its junction with Mormon Emigrant Trail 1067 Comment
  UCR174203  Carex deweyana subsp. leptopoda George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10587 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road just north of Hwy US-50 1665 Comment
  UCR174291  Lepidium densiflorum var. macrocarpum George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10724 El Dorado Northern Sierra Nevada Mountains, 0.8 mile east of Ice House Road on the road to Wright's Lake 1672 Comment
  UCR175429  Tragopogon porrifolius George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-3 10611 El Dorado Northern Sierra Nevada foothills, city park at the east end of Shingle Springs, along Pleasant Valley Road 433 Comment
  UCR175652  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2006-7-7 10821 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR175666  Gayophytum humile George K. Helmkamp, E. A. Helmkamp 2006-7-7 10825 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR175668  Erigeron glacialis George K. Helmkamp, E. A. Helmkamp 2006-7-7 10833 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR175702  Epilobium George K. Helmkamp, E. A. Helmkamp 2006-7-10 10937 El Dorado Northern Sierra Nevada Mountains, 1.1 miles west of Silver Creek along the road from Ice House Reservoir to Wright's Lake 2043 Comment
  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
  UCR176006  Veratrum californicum var. californicum George K. Helmkamp, E. A. Helmkamp 2006-7-28 11015 El Dorado Northern Sierra Nevada Mtns, Echo Summit along Hwy US-50; at entrance to the road maintenance station 2245 Comment
  UCR176008  Angelica breweri George K. Helmkamp, E. A. Helmkamp 2006-7-28 11026 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
  UCR176024  Potentilla gracilis var. fastigiata George K. Helmkamp, E. A. Helmkamp 2006-7-28 11035 El Dorado Northern Sierra Nevada Mtns, 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd 2226 Comment
  UCR176224  Hordeum jubatum George K. Helmkamp, E. A. Helmkamp 2006-7-28 11000 El Dorado Northern Sierra Nevada Mtns, Echo Summit along Hwy US-50; at entrance to the road maintenance station 2245 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
  UCR176382  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2006-7-12 10961 El Dorado Northern Sierra Nevada Mtns, Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges 1960 Comment
  UCR176400  Kelloggia galioides George K. Helmkamp, E. A. Helmkamp 2006-8-7 11167 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 21.0 miles east of its junction with Sly Park Road 2174 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
  UCR176745  Horkelia fusca subsp. parviflora George K. Helmkamp, E. A. Helmkamp 2006-7-12 10949 El Dorado Northern Sierra Nevada Mtns, Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges 1960 Comment
  UCR178640  Keckiella lemmonii George K. Helmkamp, E. A. Helmkamp 2006-9-7 11355 B El Dorado Northern Sierra Nevada Mountains, Ice House Road. Robbs Valley near Robbs Hut junction 1720 Comment
  UCR178665  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2006-9-7 11346 El Dorado Northern Sierra Nevada Mountains, Ice House Road at the junction to lower Loon Lake campground 1966 Comment
  UCR178731  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2006-9-2 11323 El Dorado Northern Sierra Nevada Mountains Foothills, along Georgetown Road, 0.3 mi northeast of Georgetown 840 Comment
  UCR178756  Cichorium intybus George K. Helmkamp, E. A. Helmkamp 2006-9-20 11408 El Dorado Northern Sierra Nevada Mountains Foothills, Bridal Veil Falls [on Esmeralda Creek], along Hwy US-50 just east of Pacific 1002 Comment
  UCR178758  Carex vesicaria var. vesicaria George K. Helmkamp, E. A. Helmkamp 2006-8-30 11312 El Dorado Northern Sierra Nevada Mountains, 0.5 mi north of Calif. Hwy 88 on road to Kirkwood Campground, which is beside Kirkwood Lake 2338 Comment
  UCR178762  Aster foliaceus George K. Helmkamp, E. A. Helmkamp 2006-8-30 11313 El Dorado Northern Sierra Nevada Mountains, 0.5 mi north of Calif. Hwy 88 on road to Kirkwood Campground, which is beside Kirkwood Lake 2338 Comment
  UCR179316  Ribes roezlii George K. Helmkamp, E. A. Helmkamp 2006-8-24 11280 El Dorado Northern Sierra Nevada Mountains Foothills, Ice House Road, 2.3 miles south of Union Reservoir Road 1552 Comment
  UCR179318  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2006-8-24 11286 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.8 miles north of Wentworth Springs Road 1616 Comment
  UCR179344  Artemisia tridentata var. vaseyana George K. Helmkamp, E. A. Helmkamp 2006-9-12 11367 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
  UCR179357  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2006-9-20 11416 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Ice House Road [at Riverton] and US-50 east of Pacific 1000 Comment
  UCR179363  Eragrostis mexicana George K. Helmkamp, E. A. Helmkamp 2006-9-20 11426 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Ice House Road [at Riverton] and US-50 east of Pacific 1000 Comment
  UCR179394  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2006-9-20 11437 El Dorado Northern Sierra Nevada Mountains Foothills, West Meadow Road 0.3 mile west of its junction with Ice House Road 1050 Comment
  UCR179560  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2006-9-29 11439 El Dorado Northern Sierra Nevada Mountains Foothills, Placerville outskirts; Calif. Hwy 49, 2 miles north of jct with US-50 549 Comment
  UCR184789  Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 2007-5-7 11947 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
  UCR184794  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2007-5-9 11981 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
  UCR184805  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2007-5-7 11968 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
  UCR184813  Plectritis ciliosa subsp. ciliosa George K. Helmkamp, E. A. Helmkamp 2007-5-7 11969 El Dorado Foothills, Northern Sierra Nevada Mountains, along Calif. Hwy 49, 6.1 miles northwest of Placerville 454 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
  UCR187077  Hypochaeris glabra George K. Helmkamp, E. A. Helmkamp 2007-5-5 11938 El Dorado Foothills, Northern Sierra Nevada Mountains, along CA-49, 3.7 miles northwest of Placerville 549 Comment
  UCR187522  Linanthus bicolor George K. Helmkamp, E. A. Helmkamp 2007-4-12 11750 El Dorado Foothills, Northern Sierra Nevada Mountains, junction of Pleasant Valley Road and Patterson Drive 537 Comment
  UCR188172  Micropus californicus George K. Helmkamp, E. A. Helmkamp 2007-4-30 11892 El Dorado Foothills, Northern Sierra Nevada Mountains, hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  UCR188234  Cystopteris fragilis George K. Helmkamp, E. A. Helmkamp 2007-4-27 11859 El Dorado Foothills, Northern Sierra Nevada Mountains, Bridal Veil Falls, Esmeralda Creek, along US-50 east of Pacific House 1027 Comment
  UCR188240  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2007-4-27 11863 El Dorado Foothills, Northern Sierra Nevada Mountains, Bridal Veil Falls, Esmeralda Creek, along US-50 east of Pacific House 1027 Comment
  UCR188446  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2007-4-30 11879 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
  UCR188498  Melilotus albus George K. Helmkamp, E. A. Helmkamp 2007-9-26 13019 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Bonetti Road and Mormon Emigrant Trail, 2.3 miles east of Jenkinson Lake 1226 Comment
  UCR188822  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2007-3-23 11703 El Dorado Foothills, Northern Sierra Nevada Mountains, Rattlesnake Bar Road, 1.4 miles west of CA-49 at Pilot Hill 313 Comment
  UCR188836  Lepidium nitidum var. nitidum George K. Helmkamp, E. A. Helmkamp 2007-3-23 11685 El Dorado Northern Sierra Nevada Mountains Foothills, hills bordering the east end of Sacramento Valley; Bass Lake Road at the southeast end of Bass Lake 381 Comment
  UCR188838  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2007-3-23 11699 B El Dorado Foothills, Northern Sierra Nevada Mountains, Rattlesnake Bar Road, 1.4 miles west of CA-49 at Pilot Hill 313 Comment
  UCR189007  Collomia grandiflora George K. Helmkamp, Elizabeth Helmkamp, Amy Barnes 2007-6-20 12386 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
  UCR189207  Juncus ensifolius George K. Helmkamp, E. A. Helmkamp 2007-9-11 12937 El Dorado Northern Sierra Nevada Mountains, along Hwy US-50 at Echo Summit 2256 Comment
  UCR189476  Achillea millefolium George K. Helmkamp, E. A. Helmkamp 2007-9-11 12928 El Dorado Northern Sierra Nevada Mountains, along Hwy US-50, 0.4 mile southwest of Phillips 1829 Comment
  UCR189478  Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 2007-3-22 11661 El Dorado Foothills, Northern Sierra Nevada Mountains, Bucks Bar Road, 4.4 miles south of Pleasant Valley Road at the junction of Sand Ridge road 628 Comment
  UCR189493  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2007-3-22 11675 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-16 at the west slope of Mt. Aukum and 1.7 miles north of Mt. Aukum village 584 Comment
  UCR189601  Lotus purshianus var. purshianus George K. Helmkamp, Elizabeth Helmkamp, Amy Barnes 2007-6-20 12371 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
  UCR189609  Collinsia parviflora George K. Helmkamp, Elizabeth Helmkamp, Amy Barnes 2007-6-20 12382 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
  UCR189759  Setaria pumila George K. Helmkamp, E. A. Helmkamp 2007-9-1 12865 El Dorado Foothills, northern Sierra Nevada Mountains, Happy Valley Road 3.2 miles east of its junction with CA-E-16 (just west of Sweeney's Crossing) 628 Comment
  UCR189914  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2007-8-9 12734 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 1.4 miles south of the lake 2101 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
  UCR190312  Croton setiger George K. Helmkamp, E. A. Helmkamp 2007-9-2 12873 El Dorado Northern Sierra Nevada Mountains Foothills, Grizzly Flat Road 5.2 miles ESE of Somerset, just west of Coles Station 957 Comment
  UCR191043  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2007-6-6 12271 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 6.3 miles east of its junction with Sly Park Road 1607 Comment
  UCR191064  Rubus parviflorus George K. Helmkamp, E. A. Helmkamp 2007-6-6 12280 El Dorado Northern Sierra Nevada Mountains, Bonetti Road, 3.2 miles south of it junction with Mormon Emigrant Trail, east of Jenkinson Lake and near Diamond Creek 1189 Comment
  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
  UCR191102  Dichelostemma multiflorum George K. Helmkamp, E. A. Helmkamp 2007-6-8 12313 El Dorado Northern Sierra Nevada Mountains, junction of Bonetti Road and Mormon Emigrant Trail [Silver Lake Rd.], east of Jenkinson Lake 1226 Comment
  UCR192511  Calochortus minimus George K. Helmkamp, E. A. Helmkamp 2007-5-31 12220 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
  UCR192902  Collinsia torreyi var. wrightii George K. Helmkamp, E. A. Helmkamp 2007-5-31 12237 El Dorado Northern Sierra Nevada Mountains, Forest Route 42, 1.2 miles west of its junction with Wrights Lake Road, generally between Wrights Lake and Ice House Reservoir 2021 Comment
  UCR193174  Allium campanulatum George K. Helmkamp, E. A. Helmkamp 2007-6-6 12262 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 8.3 miles east of its junction with Sly Park Road 1616 Comment
  UCR193180  Linanthus bicolor George K. Helmkamp, E. A. Helmkamp 2007-5-31 12253 El Dorado Northern Sierra Nevada Mountains, Forestry Route 32, 0.8 mile east of its junction with Ice House Road 1616 Comment
  UCR195153  Delphinium hansenii subsp. ewanianum George K. Helmkamp, E. A. Helmkamp 2007-5-27 12148 El Dorado Northern Sierra Nevada Mountains Foothills, 0.7 mile down a hiking trail northeast of CA-49; trail starting 3.5 miles northwest of Placerville 430 Comment
  UCR196826  Viola purpurea subsp. purpurea George K. Helmkamp, E. A. Helmkamp 2008-5-15 13447 El Dorado Northern Sierra Nevada Mountains, Granite Springs road, 0.4 mile east of its junction with Ice House Road 1707 Comment
  UCR196875  Silene californica George K. Helmkamp, E. A. Helmkamp 2008-5-15 13445 El Dorado Sierra Nevada Mountains, White Meadow Road, 0.1 mile west of its junction with Ice House Road, c. 1.3 miles up Ice House Road from US-50 1055 Comment
  UCR196883  Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2008-6-5 13611 El Dorado Sierra Nevada Mountains Foothills, Forbay Road. 0.5 mile north of its crossing of the South Fork American River 668 Comment
  UCR197240  Scleranthus annuus George K. Helmkamp, E. A. Helmkamp 2008-4-25 13316 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR197311  Juncus George K. Helmkamp, E. A. Helmkamp 2008-7-11 13768 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
  UCR197319  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2008-7-11 13776 El Dorado Northern Sierra Nevada Mountains, north side of CA-88, 2.1 miles northeast of the junction with Mormon Emigrant Trail 2340 Comment
  UCR197323  Epilobium George K. Helmkamp, E. A. Helmkamp 2008-7-11 13773 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring Road, 8.0 miles southwest of Kirkwood and 0.1 mile north of its junction with CA-88 2421 Comment
  UCR197414  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2008-3-19 13200 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; CA-49 and Patterson Road. 530 Comment
  UCR197512  Phacelia hydrophylloides George K. Helmkamp, E. A. Helmkamp 2008-7-11 13748 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring Road, 8.0 miles southwest of Kirkwood and 0.1 mile north of its junction with CA-88 2421 Comment
  UCR197646  Calyptridium umbellatum George K. Helmkamp, E. A. Helmkamp 2008-6-9 13643 El Dorado Northern Sierra Nevada Mountains, Cat Creek Road, 0.1 mile north of its junction with CA-88, jct. is 4.2 miles east of Cook's Station 1662 Comment
  UCR197822  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2008-7-11 13771 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
  UCR198424  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2008-4-25 13317 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR198551  Melica George K. Helmkamp, E. A. Helmkamp 2008-4-30 13360 B El Dorado Sierra Nevada Mountains Foothills, junction of Meadow Brook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR199054  Festuca dertonensis George K. Helmkamp, E. A. Helmkamp 2008-4-30 13375 El Dorado Sierra Nevada Mountains Foothills, Traverse Creek/Darling Ridge Road, 6.0 miles east of its junction with CA-193, c. 8.5 mi. NNE of Placerville 734 Comment
  UCR200853  Rhamnus tomentella subsp. tomentella George K. Helmkamp, E. A. Helmkamp 2008-9-9 14093 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the creek crossing, 1.6 miles east of CA-193 628 Comment
  UCR200915  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2008-9-9 14084 El Dorado Foothills, northern Sierra Nevada Mountains, junction of Bear Creek Road and Meadow Brook Road at Bear Creek; east of CA-193 and south of Georgetown 678 Comment
  UCR201758  Juncus macrandrus George K. Helmkamp, E. A. Helmkamp 2008-8-1 13954 El Dorado Northern Sierra Nevada Mountains, Dark Lake 0.4 mile northwest of the entrance to Wright's Lake along Wright's Lake Road 2148 Comment
  UCR201903  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2008-8-21 14039 El Dorado Foothills, northern Sierra Nevada Mountains, along CA-49, 0.3 mile north of the junction with Pleasant Valley Road in Diamond Springs 537 Comment
  UCR201915  Juncus chlorocephalus George K. Helmkamp, E. A. Helmkamp 2008-8-30 14045 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail 2.4 miles northwest of its junction with CA-88 2271 Comment
  UCR202756  Epilobium angustifolium subsp. circumvagum George K. Helmkamp, E. A. Helmkamp 2008-8-8 13966 El Dorado Northern Sierra Nevada Mountains, Echo Summit, west side of a Highway Maintenance Station and about 100 yards north of CA-50 2256 Comment
  UCR205980  Castilleja miniata subsp. miniata George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13912 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.4 miles north of its junction with CA Hwy 50 2043 Comment
  UCR206007  Aira caryophyllea George K. Helmkamp, E. A. Helmkamp 2009-6-3 14875 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
  UCR206070  Carex multicostata George K. Helmkamp, E. A. Helmkamp 2008-8-1 13927 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.3 miles north of its junction with CA-50 2043 Comment
  UCR206100  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2009-6-3 14901 El Dorado Northern Sierra Nevada Mountains, Forbay Road, 4.7 miles northwest of its junction with Pony Express Trail in Pollock Pines 945 Comment
  UCR206114  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2009-6-3 14885 El Dorado Sierra Nevada Mountains Foothills, Pony Express Trail, 0.7 mile east of its junction with Sly Park Road in Pollock Pines 851 Comment
  UCR206326  Alisma triviale George K. Helmkamp, E. A. Helmkamp 2009-5-29 14869 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR206332  Psilocarphus tenellus George K. Helmkamp, E. A. Helmkamp 2009-5-24 14783 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.3 miles eat of the Cosumnes River and CA-49 521 Comment
  UCR206580  Gnaphalium palustre George K. Helmkamp, E. A. Helmkamp 2009-5-24 14791 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road 640 Comment
  UCR206609  Juncus chlorocephalus George K. Helmkamp, E. A. Helmkamp 2009-7-2 15097 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR206693  Polypodium hesperium George K. Helmkamp, E. A. Helmkamp 2009-3-5 14334 El Dorado Northern Sierra Nevada Mtns. Foothills, Sand Ridge Road 4.3 miles east of its junction with CA-49 494 Comment
  UCR206732  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2009-7-2 15093 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR206759  Monardella sheltonii George K. Helmkamp, E. A. Helmkamp 2009-6-25 15051 El Dorado Sierra Nevada Mountains Foothills, Forbay Road, 1.5 miles north of the crossing of the South Fork American River, c. 9 miles north of Pollock Pines 857 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
  UCR206827  Trifolium obtusiflorum George K. Helmkamp, E. A. Helmkamp 2009-6-6 14921 El Dorado Sierra Nevada Mountains Foothills, along Mosquito Road, 6.2 miles north of its junction with CA-50 in Placerville and at the bridge over the American River 485 Comment
  UCR206833  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 2009-6-6 14913 El Dorado Sierra Nevada Mountains Foothills, along Mosquito Road, 2.8 miles north of its junction with CA-50 in Placerville 691 Comment
  UCR206860  Hypericum formosum George K. Helmkamp, E. A. Helmkamp 2009-6-25 15041 El Dorado Sierra Nevada Mountains Foothills, Forbay Road above South Fork American River, 6.4 miles north of Pony Express Trail in Pollock Pines 613 Comment
  UCR206882  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2009-3-6 14346 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
  UCR206914  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2009-5-24 14796 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road 640 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
  UCR206998  Phacelia mutabilis George K. Helmkamp, Amy Barnes 2009-7-8 15154 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207003  Microseris nutans George K. Helmkamp, E. A. Helmkamp 2009-7-2 15088 El Dorado Sierra Nevada Mountains, Wrights Road at Chimney Flat, 3.4 miles north of junction with US-50 2037 Comment
  UCR207007  Gnaphalium palustre George K. Helmkamp, Amy Barnes 2009-7-8 15166 El Dorado Sierra Nevada Mountains, Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  UCR207015  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2009-7-22 15257 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
  UCR207041  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
  UCR207146  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2009-4-4 14511 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 7.9 miles (road) SW of Bucks Bar Road, c. 6.1 miles (air) SW of Somerset 546 Comment
  UCR207148  Ranunculus californicus George K. Helmkamp, E. A. Helmkamp 2009-4-4 14509 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 7.9 miles (road) SW of Bucks Bar Road, c. 6.1 miles (air) SW of Somerset 546 Comment
  UCR207435  Botrychium multifidum George K. Helmkamp, Amy Barnes 2009-7-8 15156 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
  UCR207647  Castilleja George K. Helmkamp, E. A. Helmkamp 2009-4-21 14539 El Dorado Sierra Nevada Mountains Foothills, Rock Creek Road, 4.2 miles west of the bridge over Rock Creek 401 Comment
  UCR207654  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2009-4-21 14520 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
  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
  UCR207845  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2009-5-14 14709 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  UCR207895  Clarkia heterandra George K. Helmkamp, E. A. Helmkamp 2009-5-14 14686 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  UCR209014  Lagophylla ramosissima subsp. ramosissima George K. Helmkamp, E. A. Helmkamp 2009-8-19 15515 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek roads at Traverse Creek, south of Georgetown 674 Comment
  UCR209569  Cordylanthus tenuis subsp. tenuis George K. Helmkamp, E. A. Helmkamp 2009-8-8 15409 El Dorado Sierra Nevada Mountains Foothills, along Forebay Road, 5.0 miles northwest of its junction with Poly Express Road in Pollock Pines 954 Comment
  UCR209575  Quercus wislizeni var. wislizeni George K. Helmkamp, E. A. Helmkamp 2009-8-24 15533 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 8.8 miles east of its junction with CA-49 625 Comment
  UCR209713  Polygala cornuta var. cornuta George K. Helmkamp, E. A. Helmkamp 2009-8-8 15408 El Dorado Sierra Nevada Mountains Foothills, along Forebay Road, 5.0 miles northwest of its junction with Poly Express Road in Pollock Pines 954 Comment
  UCR209758  Quercus kelloggii George K. Helmkamp, E. A. Helmkamp 2009-8-14 15480 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Patterson Drive; south of Pleasant Valley Road in Diamond Springs 527 Comment
  UCR209766  Euphorbia nutans George K. Helmkamp, E. A. Helmkamp 2009-8-14 15465 El Dorado Sierra Nevada Mountains Foothills, junction of Sand Ridge Road and Cutaway Lane, 2.0 miles west of Bucks Bar Road 642 Comment
  UCR209768  Panicum dichotomiflorum subsp. dichotomiflorum George K. Helmkamp, E. A. Helmkamp 2009-8-14 15475 El Dorado Sierra Nevada Mountains Foothills, junction of Sand Ridge Road and Cutaway Lane, 2.0 miles west of Bucks Bar Road 642 Comment
  UCR210047  Achillea millefolium George K. Helmkamp, E. A. Helmkamp 2009-8-14 15461 El Dorado Foothills, northern Sierra Nevada Mountains, Bucks Bar Road, 3.9 miles south of Pleasant Valley Road 625 Comment
  UCR215912  Castilleja tenuis George K. Helmkamp, E. A. Helmkamp 2009-6-29 15079 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 8.2 miles north of its junction with CA-50, c. 10.5 air miles NE (73 deg. ) of Pollock Pines 1646 Comment
  UCR215920  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2009-6-29 15070 El Dorado Sierra Nevada Mountains, Ice House Road, 7.6 miles north of its junction with CA-50, c. 10.5 air miles NE (74 deg. ) of Pollock Pines 1642 Comment
  UCR216976  Lotus humistratus George K. Helmkamp, E. A. Helmkamp 2010-5-13 16018 El Dorado Sierra Nevada Mountains Foothills, Mosquito Road, 4.4 miles northeast of its junction with US-50 in Placerville 620 Comment
  UCR217164  Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2010-5-17 16057 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
  UCR217172  Trifolium microcephalum George K. Helmkamp, E. A. Helmkamp 2010-5-14 16028 El Dorado Sierra Nevada Mountains Foothills, along CA-16 (Mt. Aukum Rd.), 1.8 miles northeast of Somerset 567 Comment
  UCR217176  Lupinus albifrons var. collinus George K. Helmkamp, E. A. Helmkamp 2010-5-15 16047 El Dorado Sierra Nevada Mountains Foothills, String Canyon Road, 1.4 miles northeast of its junction with Consumnes Mine Road 1110 Comment
  UCR217178  Geranium molle George K. Helmkamp, E. A. Helmkamp 2010-5-17 16052 El Dorado Sierra Nevada Mountains Foothills, Pine Hill Road at the junction with Bertana Court; southeast edge of State Ecological Preserve, 1.6 mi. NW (293 deg. ) of Rescue 459 Comment
  UCR217265  Prunus emarginata George K. Helmkamp, Mary Jane Ganive, Mary Alice Barnes 2010-6-15 16300 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 14 miles southeast of junction with Sly Park Road at Jenkinson Lake 1662 Comment
  UCR217271  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2010-5-13 16010 El Dorado Sierra Nevada Mountains Foothills, Mosquito Road, 5.5 miles northeast of its junction with US-50 in Placerville 500 Comment
  UCR217333  Gilia capitata subsp. pedemontana George K. Helmkamp, E. A. Helmkamp 2010-6-14 16288 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.5 miles from its junction with Perry Creek Road, 3.5 air mi. ESE (96 deg. ) of Fair Play 1059 Comment
  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
  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
  UCR217875  Petrorhagia dubia George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16130 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 2.9 miles east of its junction with Perry Creek road 1012 Comment
  UCR217883  Alopecurus pratensis George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16136 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
  UCR217935  Bromus hordeaceus George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16144 El Dorado Sierra Nevada Mountains Foothills, along Perry Creek, about 0.2 mile south of Slug Gulch Road, at a point 4.7 miles east of junction with Perry Creek Road 1027 Comment
  UCR218085  Erysimum capitatum var. capitatum George K. Helmkamp, E. A. Helmkamp 2010-7-9 16498 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
  UCR218096  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2010-7-23 16624 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 1.8 miles west of its junction with Wright's Lake Road, 4 mi. NE (21 deg. ) of Kyburz 2034 Comment
  UCR218098  Viola tomentosa George K. Helmkamp, E. A. Helmkamp 2010-7-23 16622 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 0.2 mile west of its junction with Wright's Lake Road and beside Silver Creek, 4 miles NE (31 deg. ) of Kyburz 2021 Comment
  UCR218103  Ligusticum grayi George K. Helmkamp, E. A. Helmkamp 2010-7-23 16619 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 0.2 mile west of its junction with Wright's Lake Road and beside Silver Creek, 4 miles NE (31 deg. ) of Kyburz 2021 Comment
  UCR218273  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2010-7-23 16603 El Dorado Northern Sierra Nevada Mountains, trailhead at the east end of Wright's Lake, 1.2 miles north of the visitor's center at the lake entrance 2127 Comment
  UCR218285  Potentilla glandulosa subsp. nevadensis George K. Helmkamp, E. A. Helmkamp 2010-7-9 16480 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
  UCR218440  Prunus emarginata George K. Helmkamp, E. A. Helmkamp 2010-7-9 16481 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
  UCR218752  Rumex acetosella George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16323 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
  UCR219670  Veratrum George K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16576 El Dorado Northern Sierra Nevada Mountains, southeast side of Wright's Lake, 5.8 mi. NE (34 deg. ) of Kyburz 2085 Comment
  UCR219829  Gnaphalium palustre George K. Helmkamp, E. A. Helmkamp 2009-11-9 15734 El Dorado Sierra Nevada Mountains Foothills, Patterson Lake in Lake Oaks Mobile Home Park, Diamond Springs 520 Comment
  UCR222544  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-4-17 15884 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 Comment
  UCR223854  Quercus kelloggii George K. Helmkamp, E. A. Helmkamp 2009-9-15 15628 El Dorado Sierra Nevada Mountains Foothills, Omo Ranch Road, 3.9 miles west of Omo Ranch/junction with Slug Gulch Road [problem] 1043 Comment
  UCR224248  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2010-4-17 15874 El Dorado Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 1.9 miles southwest of its junction with CA-49 near Pilot Hill 314 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
  UCR230096  Keckiella lemmonii George K. Helmkamp, E. A. Helmkamp 2010-9-30 16975 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
  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
  UCR230721  Ericameria arborescens George K. Helmkamp, E. A. Helmkamp 2010-9-30 16985 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.2 miles south of its junction with Peavine Road, 0.9 mi. (air) N of I-50 1448 Comment
  UCR231014  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2010-8-7 16718 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
  UCR231096  Allium campanulatum George K. Helmkamp, E. A. Helmkamp 2010-8-7 16737 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
  UCR231339  Veronica serpyllifolia George K. Helmkamp, E. A. Helmkamp 2011-5-5 17179 El Dorado Northern Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; Patterson Drive, 0.1 mile south of CA-49 529 Comment
  UCR232602  Polypodium glycyrrhiza George K. Helmkamp, E. A. Helmkamp 2011-10-13 18422 El Dorado Northern Sierra Nevada Mountains Foothills, Forebay Road, 1.2 miles south of the bridge over the South Fork American River, 3.35 mi. NW (304 deg. ) of Pollock Pines 692 Comment
  UCR232640  Ceanothus integerrimus George K. Helmkamp, E. A. Helmkamp 2011-10-13 18411 El Dorado Northern Sierra Nevada Mountains Foothills, Forebay Road, 8.1 miles northwest of Pollock Pines at the south side of the bridge over the South Fork American River 611 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
  UCR233033  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2011-9-23 18308 El Dorado Northern Sierra Nevada Mountains, along Ice House Road, 8.6 miles north of its junction with US-50 1613 Comment
  UCR233306  Agrostis scabra George K. Helmkamp, E. A. Helmkamp 2011-9-1 18209 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
  UCR233308  Collomia grandiflora George K. Helmkamp, E. A. Helmkamp 2011-9-1 18208 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  UCR233324  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp 2011-9-1 18224 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.1 miles north of its junction with the Mormon Emigrant Trail 1523 Comment
  UCR233413  Juncus chlorocephalus George K. Helmkamp, E. A. Helmkamp 2011-9-13 18238 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
  UCR234006  Fragaria vesca George K. Helmkamp, E. A. Helmkamp 2011-7-7 17649 El Dorado Northern Sierra Nevada Mountains, Capps Crossing (Bonnetti) Road, 2.8 miles south of its junction with Mormon Emigrant Trail 1297 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
  UCR234178  Mimulus viscidus George K. Helmkamp, E. A. Helmkamp 2011-7-7 17635 El Dorado Northern Sierra Nevada Mountains, Park Creek Road, 0.4 mile east of its junction with (Co. Rd. E16) Sly Park Road, 1.4 mi. SE (111 deg. ) of Pollock Pines 1290 Comment
  UCR234206  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2010-9-23 16973 El Dorado Northern Sierra Nevada Mountains, Round Tent Canyon Road, 0.56 miles west of its junction with Peavine Ridge Road at Forest Route 31 1521 Comment
  UCR235121  Aster foliaceus var. parryi George K. Helmkamp, William Barnes 2010-9-4 16933 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring Road, 0.1 mile southwest of its upper junction with CA-88 2412 Comment
  UCR235131  Potentilla gracilis var. fastigiata George K. Helmkamp, William Barnes 2010-9-4 16938 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring Road, 0.1 mile southwest of its upper junction with CA-88 2412 Comment
  UCR235303  Solanum americanum George K. Helmkamp, E. A. Helmkamp 2011-11-12 18451 El Dorado Southeastern Sacramento Valley, 2.0 miles west of Latrobe on South Shingle Road 168 Comment
  UCR235489  Cardamine oligosperma George K. Helmkamp, E. A. Helmkamp 2012-4-27 18851 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
  UCR235577  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2012-5-3 18894 El Dorado Northern Sierra Nevada Mountains Foothills, Forebay Road, 7.0 miles NW of Pollock Pines 748 Comment
  UCR235630  Galium aparine George K. Helmkamp, E. A. Helmkamp 2012-4-27 18864 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River 401 Comment
  UCR236992  Cryptantha echinella George K. Helmkamp, E. A. Helmkamp 2012-5-22 19046 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.6 miles southeast of US-50 in Kyburz 1495 Comment
  UCR237007  Festuca arundinacea George K. Helmkamp, E. A. Helmkamp 2012-5-22 19052 El Dorado Northern Sierra Nevada Mountains, along US-50, 4.0 miles west of Silver Fork 1050 Comment
  UCR237070  Viola glabella George K. Helmkamp, E. A. Helmkamp 2012-5-18 19022 El Dorado Northern Sierra Nevada Mountains Foothills, Capps Crossing Road (Bonnetti Rd.), 0.1 mile northwest of the bridge over Diamond Creek, E of Jenkinson Lake and S of US Hwy 50 1186 Comment
  UCR237556  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2012-4-24 18828 El Dorado Northern Sierra Nevada Mountains Foothills, Bear Creek Road, 0.4 mile south of its junction with Meadow Brook Road, 2.5 miles NE (66 deg. ) of Garden Valley 705 Comment
  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
  UCR240710  Chondrilla juncea George K. Helmkamp, E. A. Helmkamp 2012-9-5 19758 El Dorado Northern Sierra Nevada Mountains Foothills, along Lotus Road, 1.6 miles south of its junction with CA-49, 1.45 mi. SW (238 deg. ) of Coloma 248 Comment
  UCR240751  Plantago major George K. Helmkamp, E. A. Helmkamp 2012-9-15 19828 El Dorado Northern Sierra Nevada Mountains Foothills, Walton Lake; along Balderson Road, 0.4 mile south of its junction with Wentworth Springs Road 951 Comment
  UCR242007  Melica harfordii George K. Helmkamp, E. A. Helmkamp 2012-9-15 19846 El Dorado Northern Sierra Nevada Mountains Foothills, Volcanoville Road at its junction with Kentucky Flat Road, NE of Coloma 1073 Comment
  UCR242562  Aira caryophyllea George K. Helmkamp, E. A. Helmkamp 2011-5-24 17377 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
  UCR242676  Chenopodium George K. Helmkamp, E. A. Helmkamp 2006-7-28 11029 El Dorado Northern Sierra Nevada Mtns, 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd 2226 Comment
  UCR242759  Triteleia ixioides subsp. anilina George K. Helmkamp, E. A. Helmkamp 2011-5-24 17370 El Dorado Northern Sierra Nevada Mountains Foothills, Mesquite Road, 7.5 miles south of its junction with Wentworth Springs Road 1073 Comment
  UCR242946  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2011-5-24 17366 El Dorado Northern Sierra Nevada Mountains Foothills, Mesquite Road, 7.5 miles south of its junction with Wentworth Springs Road 1073 Comment
  UCR242948  Rosa bridgesii George K. Helmkamp, E. A. Helmkamp 2011-5-24 17372 El Dorado Northern Sierra Nevada Mountains Foothills, Mesquite Road, 7.5 miles south of its junction with Wentworth Springs Road 1073 Comment
  UCR248530  Melilotus albus George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22034 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 2.1 miles east of Stumpy Meadows Lake, 15.6 km NNE (06 deg. ) of Pollock Pines 1357 Comment
  UCR248544  Potentilla glandulosa subsp. glandulosa George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22036 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
  UCR249173  Elymus stebbinsii George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20879 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
  UCR249568  Carex amplifolia George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20857 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz 1364 Comment
  UCR249574  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20862 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  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
  UCR249977  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
  UCR250277  Acer macrophyllum George K. Helmkamp, E. A. Helmkamp 2009-5-4 14592 El Dorado Sierra Nevada Mountains Foothills, Capps Crossing Road, 1.1 miles south of its junction with Mormon Emigrant Trail 1189 Comment
  UCR250665  Lamium amplexicaule George K. Helmkamp, Mary Alice Barnes 2013-4-25 20419 El Dorado Northern Sierra Nevada Mountains Foothills, Along CA-49/Coloma Rd., 0.1 mile south of its upper junction with Riverwood Drive, c. 2 miles south of Coloma 433 Comment
  UCR251242  Chaenactis douglasii var. douglasii George K. Helmkamp, E. A. Helmkamp 2012-7-6 19344 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 0.4 mile north of Ice House village, 10.9 miles north of the junction with US-50 1707 Comment
  UCR251277  Cryptantha simulans George K. Helmkamp, E. A. Helmkamp 2012-7-6 19321 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
  UCR253116  Lotus purshianus var. purshianus George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22068 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
  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
  UCR253144  Gnaphalium canescens subsp. beneolens George K. Helmkamp, E. A. Helmkamp 2013-11-27 22492 El Dorado Sierra Nevada Mountains Foothills, Capp's Crossing Road, 0.4 mile southeast of its junction with Mormon Emigrant Trail 1204 Comment
  UCR253219  Viola lobata var. lobata George K. Helmkamp 2014-4-27 22829 El Dorado Sierra Nevada Mountains, Capps Crossing Road, 0.9 mile west of the bridge over Camp Creek 1552 Comment
  UCR253245  Pseudotsuga menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2013-11-27 22490 El Dorado Sierra Nevada Mountains Foothills, Capp's Crossing Road at its junction with Mormon Emigrant Trail 1224 Comment
  UCR253617  Solanum americanum George K. Helmkamp, Elizabeth Helmkamp 2012-11-12 20125 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
  UCR253631  Croton setiger George K. Helmkamp, Elizabeth Helmkamp 2012-11-12 20127 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
  UCR256827  Senecio George K. Helmkamp, Amy Barnes 2014-5-14 22874 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 0.1 mile east of Pebble Canyon Drive, 6.25 air mi. SW (217 deg. ) of Kyburz 1832 Comment
  UCR257091  Rumex salicifolius var. denticulatus George K. Helmkamp, Elizabeth Helmkamp 2013-9-7 22271 El Dorado Northern Sierra Nevada Mountains, east side of Mormon Emigrant Trail, 2.7 miles west of its junction with CA-88/Carson Pass Hwy 2264 Comment
  UCR257173  Baccharis pilularis George K. Helmkamp, Elizabeth Helmkamp 2013-10-12 22413 El Dorado Sierra Nevada Mountains Foothills, Cedar Ravine Road, 1.6 rd. miles north of Pleasant Valley Road, 3.5 miles SE ( 137 deg. air ) of Placerville, SE edge of Sierra Rock quarry 652 Comment
  UCR257196  Dactylis glomerata George K. Helmkamp, Mary Alice Barnes 2013-5-13 20555 El Dorado Sierra Nevada Mountains Foothills, along E-16 (Mt. Aukum Rd.), 3.3 miles north of the Amador County line, near D'Agostini Reservoir 569 Comment
  UCR257198  Festuca arundinacea George K. Helmkamp, Mary Alice Barnes 2013-5-13 20552 El Dorado Sierra Nevada Mountains Foothills, along E-16 (Mt. Aukum Rd.), 3.3 miles north of the Amador County line, near D'Agostini Reservoir 569 Comment
  UCR257568  Sidalcea malviflora subsp. asprella George K. Helmkamp, Elizabeth Helmkamp 2013-5-2 20456 El Dorado Sierra Nevada Mountains Foothills, NW of Somerset, Bucks Bar Road, 1.1 miles southeast of its junction with Pleasant Valley Road 622 Comment
  UCR257574  Stellaria media George K. Helmkamp, Elizabeth Helmkamp 2014-1-25 22512 El Dorado Sierra Nevada Mountains Foothills, 1.15 air mi. ESE (106 deg. ) of Somerset, Grizzly Flat Road at the junction with Ladyhawke Way 748 Comment
  UCR257697  Spiraea densiflora George K. Helmkamp, Amy Barnes 2012-8-19 19660 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
  UCR257769  Cytisus scoparius George K. Helmkamp, Amy Barnes 2014-7-28 22946 El Dorado Sierra Nevada Mountains Foothills, Lake Walton beside Balderston Road; 1/4 mile south of Wentworth Springs Road 966 Comment
  UCR257775  Muhlenbergia filiformis George K. Helmkamp, Amy Barnes 2012-8-19 19681 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
  UCR257819  Ranunculus pusillus George K. Helmkamp, Amy Barnes 2012-8-19 19662 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
  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
  UCR257886  Grindelia hirsutula var. davyi George K. Helmkamp, Amy Barnes 2014-7-28 22953 El Dorado Sierra Nevada Mountains, Wentworth Springs Road, 3.8 miles east of Stumpy Meadows Reservoir 1357 Comment
  UCR257888  Cirsium vulgare George K. Helmkamp, Amy Barnes 2014-7-28 22954 El Dorado Sierra Nevada Mountains, Wentworth Springs Road, 3.8 miles east of Stumpy Meadows Reservoir 1357 Comment
  UCR258179  Agrostis idahoensis George K. Helmkamp, Amy Barnes 2014-7-28 22971 El Dorado Northern Sierra Nevada Mountains, at the junction of Wentworth Springs Road and Ice House Road 1412 Comment
  UCR258201  Madia gracilis George K. Helmkamp, Amy Barnes 2014-8-11 23003 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258243  Gilia leptalea subsp. leptalea George K. Helmkamp, Amy Barnes 2012-8-19 19675 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
  UCR258407  Allophyllum gilioides George K. Helmkamp 2014-5-21 22911 El Dorado Sierra Nevada Mountain Foothills, Bucks Bar Road, 0.8 mile northwest of the bridge over North Fork Cosumnes River 605 Comment
  UCR258545  Iris hartwegii George K. Helmkamp, Mary Alice Barnes 2013-4-30 20424 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 0.1 mile south of its junction with Mormon Emigrant Trail 1261 Comment
  UCR258550  Calochortus minimus George K. Helmkamp, Mary Alice Barnes 2013-4-30 20420 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 0.1 mile south of its junction with Mormon Emigrant Trail 1261 Comment
  UCR258789  Perideridia lemmonii George K. Helmkamp, Amy Barnes 2012-8-19 19666 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
  UCR260046  Panicum capillare George K. Helmkamp, Elizabeth Helmkamp 2013-10-15 22430 El Dorado Sierra Nevada Mountains Foothills, Oak Hill Road, 2.9 miles south of its junction with Pleasant Valley Road, c. 5 miles SSE of Placerville 617 Comment
  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
  UCR261999  Solidago altissima George K. Helmkamp, Amy Barnes 2014-10-10 23165 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.6 mile northwest of Luther Pass 2378 Comment
  UCR262000  Solidago canadensis subsp. elongata George K. Helmkamp, Amy Barnes 2014-10-10 23164 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.6 mile northwest of Luther Pass 2378 Comment
  UCR275752  Juglans californica var. hindsii George K. Helmkamp, E. A. Helmkamp 2009-9-17 15633 El Dorado Sierra Nevada Mountains Foothills, Bucks Bar Road, 0.8 mile southeast of its junction with Pleasant Valley Road 683 Comment
  UCSB71766  Astragalus bolanderi Helmkamp, G.; Helmkamp, E. 2008-8-30 El Dorado Northern Sierra Nevada Mountains; Leek Spring Valley, Foster Meadow Road 0.9 miles southwest of its junction with Mormon Emigrant Trail (Tragedy Spring 7.5' Q.) 2241 Comment
  SBBG128844  Hackelia micrantha G. K. Helmkamp, E. A. Helmkamp 2010-8-7 16717 El Dorado Silver Fork Rd, 0.4 mi E of its jct with Mormon Emigrant Trail, at Jim Quinn Spring 2136 Comment
  SEINET15325662  Hosackia oblongifolia G. K. Helmkamp, E. A. Helmkamp 2012-1 19350 El Dorado Northern Sierra Nevadad Mountains: Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-502078 2078 Comment
  UCD98045  Cerastium glomeratum G. K. Helmkamp; E. A. Helmkamp 2007-3-22 11677 El Dorado Northern Sierra Nevada Mountains. Along Hwy CA-16 at the west slope of Mt. Aukum and 1.7 miles north of Mt. Aukum village. Comment
  RSA628604  Lupinus microcarpus var. densiflorus George K. Helmkamp, E. A. Helmkamp 1998-5-14 3601 Fresno Coast Range; Wartham Creek Canyon, near Curry Mtn., ca. 6-7 miles (airline) SW of Coalinga, along CA Hwy 198, 20.8 mi. W of Interstate 5. 396 Comment
  SEINET235766  Penstemon centranthifolius G. K. Helmkamp, E. A. Helmkamp 1998-5-14 3635 Fresno Coast Range: Warthan Creek Canyon along CA Hwy 198 27.6 mi. W of Intersate 5 W of Coalinga. 457 Comment
  UCR102086  Heliotropium curassavicum George K. Helmkamp, E. A. Helmkamp 1998-5-14 3615 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
  UCR102095  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 1998-5-14 3596 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
  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
  UCR122187  Amsinckia menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2002-4-23 7565 Fresno Central Valley; San Joaquin Valley, along CA Hwy 180, 10.8 mi west of CA Hwy 145 107 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
  SD243109  Heliotropium europaeum George K. Helmkamp, E. A. Helmkamp 2011-10-8 18368 Glenn Northern Sacramento Valley: along CA-45, 1.2 miles north of Princeton (Princeton 7.5'Q) 43 Comment
  UCR232184  Oryza sativa George K. Helmkamp, E. A. Helmkamp 2011-10-8 18392 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
  UCR232191  Leersia oryzoides George K. Helmkamp, E. A. Helmkamp 2011-10-8 18387 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
  SD148242  Eriophyllum lanatum var. croceum G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6991 Humboldt North coast redwood area; California Highway 36, along the Van Duzen River, 19.6 miles east of U. S. 101. 136 Comment
  UC1787278  Crepis capillaris G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6992 Humboldt North coast redwood area; CA-36, along the Van Duzen R. 19.6 mi E of US-101 (W of Bar W rd). 137 Comment
  UCR122373  Lathyrus littoralis George K. Helmkamp, E. A. Helmkamp 2001-7-8 7014 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  UCR122385  Lessingia filaginifolia var. californica George K. Helmkamp, E. A. Helmkamp 2001-7-8 6996 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR123947  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2001-7-8 6987 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  UCR123954  Adiantum aleuticum George K. Helmkamp, E. A. Helmkamp 2001-7-8 6969 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-A1045-1211  Dicoria canescens subsp. clarkiae George K. Helmkamp 1977-1-22 Imperial Yuha Desert where Pinto Wash crosses State Highway 98; ; Yuha Basin 7.5'Q Comment
  CLARK-A1045-1216  Astragalus crotalariae George K. Helmkamp 1977-1-22 Imperial Salton Sea roadside ditch along State Highway 86 at Riverside County line; Oasis 7.5'Q Comment
  RSA489118  Eriogonum deserticola George K. Helmkamp 1988-2-28 28 Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98., [10 km cell; PG-1N, 0E] 152 Comment
  RSA489130  Camissonia claviformis subsp. claviformis George K. Helmkamp 1988-2-28 s.n. Imperial At end of dirt road ca. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98. 152 Comment
  SD143747  Plantago ovata G. K. Helmkamp, E. Helmkamp 1998-1-24 2572 Imperial Between Highway I-8 and the All American Canal across from the Brock Research Center (ca. 3.0 miles east of the jct of Highway CA-98 with Highway I-8). 46 Comment
  SD143794  Oenothera deltoides subsp. deltoides G. K. Helmkamp, E. A. Helmkamp 1998-1-23 2566 Imperial 18.8 miles northwest of Westmoreland. -29 Comment
  SD143799  Eremothera refracta G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2951 Imperial Little Picacho Wash along Picacho Road, 2.5 miles south of Picacho State Recreation Area. 152 Comment
  SD143831  Sphaeralcea ambigua var. ambigua G. K. Helmkamp, E. Helmkamp 1998-1-24 2606 Imperial Ogilby Road, 14.2 miles south of the junction with Highway CA-78. 182 Comment
  SD143890  Marina parryi G. K. Helmkamp, E. Helmkamp 1998-1-24 2610 Imperial Ogilby Road, 14.2 miles south of the junction with Highway California 78; vicinity of Tumco Wash. 182 Comment
  SD143953  Atriplex serenana G. K. Helmkamp, E. Helmkamp 1998-1-24 2621 Imperial North end of Calipatria at corner of Young Road and Highway 111. Comment
  SD144073  Ambrosia dumosa G. K. Helmkamp, E. Helmkamp 1998-1-23 2562 Imperial On the W side of Hwy 86, 18.8 mi NW of Westmoreland. Comment
  SD144132  Aristida californica var. californica G. K. Helmkamp, E. Helmkamp 1998-1-24 2574 Imperial Between Hwy I-8 and the All-American Canal, across from the Brock Research Center (ca. 3 miles east of the junction of Hwy CA-98 with Hwy I-8) 46 Comment
  SEINET2055787 Image available Lotus strigosus George K. Helmkamp, E. A. Helmkamp 2001-3-17 6287 Imperial Colorado Desert; Ogilby Rd.,15.3 mi south of CA-78. 167 Comment
  UCR100849  Eriogonum thomasii George K. Helmkamp, E. A. Helmkamp 1998-3-18 2879 Imperial Sonoran (Colorado) Desert, 4.7 miles north of Winterhaven on Picacho Rd & 1 mile NW of the All-American Canal 76 Comment
  UCR101086  Eremalche rotundifolia George K. Helmkamp, E. A. Helmkamp 1998-3-19 2962 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR101118  Hesperocallis undulata George K. Helmkamp, E. A. Helmkamp 1998-3-19 2943 Imperial Sonoran (Colorado) Desert, Imperial Dam area, along Ferguson Rd, 1.5 mi. north of Hwy S-24. 91 Comment
  UCR101130  Linanthus jonesii George K. Helmkamp, E. A. Helmkamp 1998-3-19 2948 Imperial Sonoran (Colorado) Desert, Little Picacho Wash along Picacho Rd, 2.5 mi. south of Picacho State Recreation Area 152 Comment
  UCR103358  Nama demissa var. demissa George K. Helmkamp, E. Helmkamp 1998-1-24 2599 Imperial Sonoran (Colorado) Desert, 4.2 mi. north of Winterhaven on Picacho Rd, where the road crosses the canal. 91 Comment
  UCR103606  Camissonia brevipes subsp. arizonica George K. Helmkamp, E. A. Helmkamp 1998-3-19 2940 Imperial Sonoran (Colorado) Desert, Imperial Dam area, along Ferguson Rd, 1.5 mi. north of Hwy S-24. 91 Comment
  UCR103608  Hibiscus denudatus George K. Helmkamp, E. A. Helmkamp 1998-3-19 2941 Imperial Sonoran (Colorado) Desert, Imperial Dam area, along Ferguson Rd, 1.5 mi. north of Hwy S-24. 91 Comment
  UCR103624  Mentzelia involucrata George K. Helmkamp, E. A. Helmkamp 1998-3-19 2927 Imperial Sonoran (Colorado) Desert, Imperial Dam area, just south of the dam on Hwy S-24. 76 Comment
  UCR103665  Oenothera deltoides George K. Helmkamp, E. A. Helmkamp 1998-1-23 2566 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR104876  Hilaria rigida George K. Helmkamp, E. Helmkamp 1998-1-24 2596 Imperial Sonoran (Colorado) Desert, Gravel Rd south of Hwy I-8. Rocky hills at W edge of Fort Yuma Indian Reservation. 61 Comment
  UCR120507  Abronia villosa var. villosa George K. Helmkamp, E. A. Helmkamp 2001-3-17 6272 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR121151  Chenopodium album George K. Helmkamp, E. A. Helmkamp 2001-3-16 6266 Imperial Colorado Desert., Ramer Lake -46 Comment
  UCR50963  Oenothera deltoides George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR50977  Chaenactis stevioides George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, just N of Signal Mtn., south of Hwy 98 31 Comment
  UCR59856  Hoffmannseggia glauca George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Colorado River Valley; 0.5 mi west of Palo Verde at 4th Street 72 Comment
  CLARK-A1045-1010  Mimulus fremontii George K. Helmkamp 1978-5-28 Inyo Bishop dry slope beside River at Pleasant Valley; ; Fish Slough 7.5' Q 1310 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
  RSA615434  Lupinus pratensis George K. Helmkamp 1997-9-29 2424 Inyo Onion Valley in the Sierra Neveda Mnts W of Independence. 2805 Comment
Read comments
Jul 10 2011
  RSA615440  Penstemon rostriflorus George K. Helmkamp 1997-9-29 2442 Inyo Onion Valley Rd, 7.9 mi. W of Hwy US-395 from Independence. 2159 Comment
  RSA709307  Epilobium ciliatum George K. Helmkamp, E. A. Helmkamp 1998-8-10 4277 Inyo Eastern Sierra Nevada Mountains: along Big Pine Creek 12 mi W of Big Pine along Glacier Lodge Rd. 2317 Comment
  SD224898  Sisymbrium altissimum G. K. Helmkamp 1997-9-30 2494 Inyo East side of the White Mountains 1707 Comment
  SD225002  Phacelia ramosissima var. subglabra G. K. Helmkamp 1997-9-30 2505 Inyo Sierra Nevada Mountains; Lone Pine Crk. 2286 Comment
  SD225022  Sphaeralcea ambigua var. rugosa G. K. Helmkamp 1997-9-30 2472 Inyo White Mountains; open sagebrush in juniper area; 6.1 mi N of highway CA-168 on White Mountain Road. 2621 Comment
  SD225122  Nicotiana attenuata G. K. Helmkamp 1997-9-29 2439 Inyo Sierra Nevada Mtns: Onion Valley Rd, 7.9 mi W of US-395 from Independence 2158 Comment
  UCR100334  Euphorbia fendleri George K. Helmkamp 1997-9-30 2466 Inyo White Mountains, 6.1 mi north of Calif. Hwy 168 on White Mountain Road 2622 Comment
  UCR100340  Sphaeralcea ambigua var. rugosa George K. Helmkamp 1997-9-30 2472 Inyo White Mountains, 6.1 mi north of Calif. Hwy 168 on White Mountain Road 2622 Comment
  UCR100355  Bouteloua barbata var. barbata George K. Helmkamp 1997-9-30 2488 Inyo White Mountains, [Deep Springs Valley], east side of White Mountains 1585 Comment
  UCR121932  Antennaria rosea George K. Helmkamp, E. A. Helmkamp 2000-7-19 5934 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121961  Chamaebatiaria millefolium George K. Helmkamp, E. A. Helmkamp 1998-8-11 4299 Inyo White Mountains, along White Mtn. Rd. and west of the Bristlecone Pine boundary; 0.5 miles northwest of Shulman Grove 3079 Comment
  UCR121969  Eriogonum cernuum George K. Helmkamp, E. A. Helmkamp 1998-8-11 4309 Inyo White Mountains, 1.0 mile north of Wyman Creek Road on White Mountain Road and west of the Bristlecone Pine boundary 2988 Comment
  UCR123400  Rumex paucifolius George K. Helmkamp, E. A. Helmkamp 1998-8-12 4384 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR134486  Penstemon rostriflorus George K. Helmkamp, E. A. Helmkamp 1998-8-10 4268 Inyo Eastern Sierra Nevada Mountains, along Big Pine Creek 12 mi west of Big Pine along Glacier Lodge Rd. 2317 Comment
  UCR134488  Vicia americana var. americana George K. Helmkamp, E. A. Helmkamp 1998-8-10 4273 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
  UCR134700  Sphenosciadium capitellatum George K. Helmkamp, E. A. Helmkamp 1998-8-10 4274 Inyo Eastern Sierra Nevada Mountains, along Big Pine Creek 12 mi west of Big Pine along Glacier Lodge Rd. 2317 Comment
  UCR13808  Mimulus bigelovii var. cuspidatus George K. Helmkamp 1973-6-15 s.n. Inyo Owens Valley, Owens River at Pleasant Valley, near Mono county line 1372 Comment
  UCR13828  Abronia villosa George K. Helmkamp 1975-6-15 s.n. Inyo Owens Valley, Owens River, Pleasant Valley 1311 Comment
Read comments
Oct 23 2014
  UCR13865  Phlox stansburyi var. brevifolia George K. Helmkamp 1973-6-13 s.n. Inyo Owens Valley, Owens River near Pleasant Valley 1372 Comment
  UCR141111  Stipa nevadensis George K. Helmkamp, E. A. Helmkamp 1998-8-10 4267 Inyo Eastern Sierra Nevada Mountains, along Big Pine Creek 12 mi west of Big Pine along Glacier Lodge Rd. 2317 Comment
  UCR14383  Carex douglasii George K. Helmkamp 1974-6-8 s.n. Inyo Owens Valley, Pleasant Valley along the Owens River, 9 mi NW of Bishop 1311 Comment
  UCR14968  Gilia campanulata George K. Helmkamp 1976-5-16 s.n. Inyo Owens Valley/Eastern Sierra Nevada, Beside US 395 at Pleasant Valley Dam Rd. 1372 Comment
  UCR15390  Camissonia boothii George K. Helmkamp 1977-4-23 s.n. Inyo Northern Mojave Desert, Panamint Mountains, south of Emigrant Pass 1220 Comment
  UCR15540  Camissonia claviformis subsp. lancifolia George K. Helmkamp 1978-5-28 s.n. Inyo Owens Valley, Beside the Owens River at Pleasant Valley 1311 Comment
  UCR17330  Chorizanthe brevicornu var. brevicornu George K. Helmkamp 1973-6-14 s.n. Inyo Eastern Sierra Nevada Mtns, Sherwin Grade on US Hwy 395 1982 Comment
  UCR18562  Spartina gracilis George K. Helmkamp 1974-8-21 s.n. Inyo Owens Valley, Pleasant Valley along Owens River 1372 Comment
  UCR60019  Lessingia glandulifera var. glandulifera George K. Helmkamp 1988-9-8 s.n. Inyo Owens Valley, Pleasant Valley Dam Road, at junction with Hwy 395 1280 Comment
  UCR87533  Phacelia calthifolia George K. Helmkamp 1993-4-24 s.n. Inyo Northern Mojave Desert, 4 mi. south of Shoshone, along Hwy 127 488 Comment
  UCR99899  Stephanomeria pauciflora George K. Helmkamp 1997-9-30 2503 Inyo Sierra Nevada Mtns., Big Pine Creek 2287 Comment
  UCR99900  Helenium bigelovii George K. Helmkamp 1997-9-20 2422 Inyo Onion Valley in the Sierra Nevada Mtns. west of Independence 2805 Comment
  UCR99917  Juniperus occidentalis var. australis George K. Helmkamp 1997-9-30 2460 Inyo White Mountains, 6.1 mi north of Calif. Hwy 168 on White Mountain Road 2622 Comment
  UCR99920  Eriogonum parishii George K. Helmkamp 1997-9-29 2444 Inyo Sierra Nevada Mountains, Onion Valley Road, 7.9 mi west of Hwy US-395 from Independence 2159 Comment
  CLARK-A1045-17  Physalis crassifolia George K. Helmkamp 1977-4-23 Inyo Panamint Mountains Dry wash in Panamint Mountains, south of Emigrant Pass; 1066 Comment
  UCSB37809  Maianthemum stellatum Helmkamp, G. 1973-6-14 Inyo Owens River 1 1/2 miles up from Bring Springs Comment
  CDA26657  Astragalus douglasii var. douglasii G. K. Helmkamp, E. A. Helmkamp 1998-6-29 4180 Kern Tehachapi Mtns.; Tehachapi Mountain Park, 4.2 miles SW of Highline Rd. along Water Canyon Rd. Comment
  CLARK-A1045-1023  Plantago lanceolata George K. Helmkamp 1977-6-11 Kern Weldon Weldon 7.5'Q Comment
  CLARK-A1045-983  Lotus purshianus George K. Helmkamp 1977-6-11 Kern Weldon Weldon 7.5'Q Comment
  CLARK-A1045-993  Coreopsis calliopsidea George K. Helmkamp 1977-4-16 Kern Mojave 3 miles east of Mojave; ; Mojave 7.5'Q Comment
  RSA0023183  Ribes quercetorum George K. Helmkamp, E. A. Helmkamp 1997-3-7 1398 Kern San Emigdio Ranch, S portion. 1494 Comment
  RSA667081  Lepidium dictyotum var. acutidens George K. Helmkamp, E. A. Helmkamp 2001-4-27 6539 Kern Central CA Valley; Enos Lane Rd., 1.9 mi S of CA-119 (NE of Taft). 61 Comment
  RSA667123  Viola purpurea subsp. quercetorum George K. Helmkamp, E. A. Helmkamp 2001-4-26 6484 Kern East foothills, Tehachapi Mountains: Tehachapi Willow Springs Rd., 2.2 miles S of Highline Rd. 1372 Comment
  RSA667218  Lupinus excubitus var. austromontanus George K. Helmkamp, E. A. Helmkamp 2001-4-26 6495 Kern East foothills, Tehachapi Mountains: Sand Canyon Road, 7.3 miles N of CA-58. 1341 Comment
  RSA710033  Pholistoma membranaceum George K. Helmkamp, E. A. Helmkamp 2001-5-2 6648 Kern Temblor Range; CA-58, very near the San Luis Obispo Co. line. 427 Comment
  SBBG93088  Astragalus douglasii G. K. Helmkamp 1990-4-19 Kern St Hwy 58 at Sand Cyn Rd, 2 mi E of Monolith 1203 Comment
  SD148201  Plagiobothrys nothofulvus G. K. Helmkamp, E. A. Helmkamp 2001-4-27 6505 Kern Hart Flat turnoff from California Highway 58. 883 Comment
  SD148237  Centromadia pungens subsp. pungens G. K. Helmkamp, E. A. Helmkamp 2001-4-27 6535 Kern Enos Lane Road, 1.9 mile south of California Highway 119. 60 Comment
  UCD119744  Amsinckia menziesii G. K. Helmkamp; E. A. Helmkamp 2001-4-27 6542 Kern Central CA Valley: Enos Lane Rd., 1.9 mi S of CA-119 (NE of Taft). 61 Comment
  UCR101088  Sisymbrium orientale George K. Helmkamp, E. A. Helmkamp 1998-4-7 3183 Kern 3 mi. north of Maricopa on Calif. Hwy 33 252 Comment
  UCR101116  Dichelostemma capitatum subsp. pauciflorum George K. Helmkamp, E. A. Helmkamp 1998-4-9 3289 Kern W end of city of Mojave, along Airport Blvd. 808 Comment
  UCR102501  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 1998-4-9 3272 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR102509  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 1998-4-9 3269 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR107301  Collinsia bartsiifolia var. davidsonii George K. Helmkamp, E. A. Helmkamp 1998-5-12 4058 Kern Tehachapi Mountains, Roadside along Calif. Hwy 58 at the Keene turnoff 838 Comment
  UCR121700  Calandrinia ciliata George K. Helmkamp, E. A. Helmkamp 2001-4-26 6481 Kern Eastern Tehachapi Mtns Foothills, Tehachapi Willow Springs Rd., 2.2 mi south of Highline Rd. 1372 Comment
  UCR122897  Platystemon californicus George K. Helmkamp, E. A. Helmkamp 2001-5-2 6652 Kern Temblor Range, [dirt road 0.45 km south of] Calif. Hwy 58, very near the San Luis Obispo Co. line 427 Comment
  UCR123544  Mentzelia veatchiana George K. Helmkamp, E. A. Helmkamp 2000-4-25 5607 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
  UCR123935  Amsinckia tessellata var. tessellata George K. Helmkamp, E. A. Helmkamp 2001-4-27 6549 Kern West end San Joaquin Valley, Como Rd., 1.9 mi SE of Calif. Hwy 58, NW of Taft 671 Comment
  UCR130227  Amsinckia eastwoodiae George K. Helmkamp, E. A. Helmkamp 2001-4-27 6530 Kern Tehachapi Mtns., Western Foothills, Calif. Hwy 223 (Bear Mtn. Blvd.), 7.2 mi east of Arvin 366 Comment
  UCR130233  Phacelia cicutaria var. cicutaria George K. Helmkamp, E. A. Helmkamp 2001-4-27 6513 Kern Tehachapi Mtns, Hart Flat turnoff from Calif. Hwy 58 884 Comment
  UCR130953  Centaurea melitensis George K. Helmkamp, E. A. Helmkamp 1998-5-13 3551 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
  UCR130957  Erodium cicutarium George K. Helmkamp, E. A. Helmkamp 1998-5-13 3554 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
  UCR130963  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 1998-5-13 3534 B 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
  UCR14939  Eriogonum nudum var. pauciflorum George K. Helmkamp 1975-9-20 s.n. Kern Vacant lot in Frazier Park 1402 Comment
  UCR157772  Collomia grandiflora George K. Helmkamp, E. A. Helmkamp 1998-6-29 4185 Kern Tehachapi Mountains, Tehachapi Mountain Park, 4.2 miles SW of Highline Road along Water Canyon Road 1768 Comment
  UCR157797  Keckiella breviflora subsp. breviflora George K. Helmkamp, E. A. Helmkamp 1998-6-29 4133 Kern Tehachapi Mtns, Water Canyon Rd., 1.9 miles south of SW end of city of Tehachapi at Highland Road 1494 Comment
  UCR157800  Secale cereale George K. Helmkamp, E. A. Helmkamp 1998-6-29 4165 Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 Comment
  UCR157986  Clarkia George K. Helmkamp, E. A. Helmkamp 1998-6-29 4141 B Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 Comment
  UCR21719  Eriogonum baileyi var. baileyi George K. Helmkamp 1980-9-6 s.n. Kern Lake of the Woods near Mount Pinos; growing at the side of the road 1561 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
  UCR28039  Eriogonum davidsonii 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
  RSA518408  Ericameria nauseosa var. oreophila George K. Helmkamp 1990-9-23 A- 2 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  SBBG94822  Eriogonum nudum var. nudum G. K. Helmkamp 1990-9-23 G- 11 Lassen N of Ravendale 1676 Comment
  UCR67383  Eriogonum microthecum var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  UCR67465  Lactuca saligna George K. Helmkamp 1990-9-23 G- 13 Lassen north of Ravendale 1677 Comment
  RSA518406  Madia elegans subsp. elegans George K. Helmkamp 1990-9-23 A- 6 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  UCR102525  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 1997-3-6 1361 Los Angeles Tehachapi Mtns., Hills south of Gorman. Along Gorman Post Rd c. 1.1 mi. NW of Calif. Hwy 138 1128 Comment
  UCR130060  Solanum xanti George K. Helmkamp, E. A. Helmkamp 1998-5-21 4057 Los Angeles Western Mojave Desert/Transverse Range, junction of Munz Ranch Rd and Lake Elizabeth Rd., north of Lake Elizabeth 1006 Comment
  SBBG119155  Cryptantha intermedia G. K. Helmkamp with E. A. Helmkamp 1998-5-21 4045 Los Angeles jct of Munz Ranch Rd and Lake Elizabeth Rd, N of Lake Elizabeth 1006 Comment
  UCR122396  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2002-4-23 7520 Madera Western Sierra Nevada Foothills, along Belleview Rd (Rd 208) 1.2 mi west of Bear Lake Rd (Rd 211), west of Indian Springs 213 Comment
  UCR122398  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 2002-4-23 7530 Madera Western Sierra Nevada foothills, 2.5 miles north of Oakhurst along CA Hwy 41 762 Comment
  UCR122411  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 2002-4-24 7543 Madera Western Sierra Nevada foothills, Auberry Rd (Rd 200/North Fork Rd.) 5.0 mi south of North Fork 503 Comment
  UCR122419  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2002-4-24 7544 Madera Western Sierra Nevada foothills, Auberry Rd (Rd 200/North Fork Rd.) 5.0 mi south of North Fork 503 Comment
  UCR122423  Aesculus californica George K. Helmkamp, E. A. Helmkamp 2002-4-24 7594 Madera Western Sierra Nevada foothills, Auberry Rd (Rd 200/North Fork Rd.) 5.0 mi south of North Fork 503 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
  UCR18607  Carex kelloggii George K. Helmkamp 1974-10-18 s.n. Madera Sierra Nevada Mtns., South Fork of Willow Creek at North Fork 793 Comment
  CLARK-A1045-1395  Ligusticum grayi George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada Porcupine Flats Campground; wet meadow; ; Yosemite Falls 7.5'Q 2590 Comment
  CLARK-A1045-1398  Carex praegracilis 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-A1045-1424  Hieracium albiflorum George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada 2 miles east of Yosemite Creek on the way to Porcupine Flats; dry slope under pines; ; Yosemite Falls 7.5'Q 2682 Comment
  CLARK-A1045-1429  Pyrola picta George K. Helmkamp 1977-8-6 Mariposa Sierra Nevada 2 miles east of Yosemite Creek on the way to Porcupine Flats; pine needle humus; ; Yosemite Falls 7.5'Q 2682 Comment
  UCR14925  Artemisia douglasiana George K. Helmkamp 1975-10-4 s.n. Mariposa Sierra Nevada Mtns., Beside Big Creek at bridge in Fish Camp 1585 Comment
  UCR15421  Juncus chlorocephalus George K. Helmkamp 1977-8-6 s.n. Mariposa Sierra Nevada Mtns, Porcupine Flat Campground 2591 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
  RSA614892  Adiantum jordanii George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-25 2103 Mendocino State Hwy 128, ca 5 mi N of Cloverdale. 427 Comment
  SD148162  Lupinus littoralis G. K. Helmkamp, E. A. Helmkamp 2000-6-18 5754 Mendocino North coast bluffs and sand/clay mesa above beach: Glass Beach at Fort Bragg. 9 Comment
  SEINET273114 Image available Polygonum paronychia G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1997-6-26 2168 Mendocino Fort Bragg 6 Comment
  UCR101617  Bellis perennis George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2204 Mendocino North Coast, two miles north of Westport between US-1 and the coast 30 Comment
  UCR102543  Tiarella trifoliata var. unifoliata George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2120 Mendocino North Coast Range, Anderson Valley, Calif. Hwy 128, NW of Boonville 91 Comment
  UCR103949  Polystichum munitum George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2127 Mendocino North Coast Range, Anderson Valley, Calif. Hwy 128, NW of Boonville 91 Comment
  UCR104825  Pteridium aquilinum George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2132 Mendocino North Coast Range, Anderson Valley, Calif. Hwy 128, NW of Boonville 91 Comment
  UCR104878  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2112 Mendocino State Hwy 128, 1.5 mi. SE of Boonville, in Anderson Valley 152 Comment
  UCR106436  Hypochaeris radicata George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2160 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR106438  Spergularia rubra George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2163 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR106459  Lathyrus latifolius George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2159 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR121495  Cardamine californica var. sinuata George K. Helmkamp, E. A. Helmkamp 2000-6-19 5768 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR121503  Centaurium davyi George K. Helmkamp, E. A. Helmkamp 2000-6-19 5795 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR121507  Iris douglasiana George K. Helmkamp, E. A. Helmkamp 2000-6-19 5779 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR122217  Senecio jacobaea George K. Helmkamp, E. A. Helmkamp 2000-6-18 5808 Mendocino North Coast Range, 9.2 mi east of CA Hwy 1 on CA Hwy 20, southeast of Fort Bragg 305 Comment
  UCR132120  Prunella vulgaris var. lanceolata George K. Helmkamp, E. A. Helmkamp 2000-6-18 5716 Mendocino North Coast, along Calif. Hwy 128, approximately 10 mi east of the coast 274 Comment
  RSA518559  Mentzelia laevicaulis George K. Helmkamp 1990-9-23 H- 6 Modoc US Hwy 395, 13 mi. N of Likely. 1341 Comment
  UCR67026  Lycopus lucidus George K. Helmkamp 1990-9-23 J- 10 Modoc Warner Mtns, Goose Lake, within 0.1 mi of the Oregon border 1476 Comment
  UCR67445  Eriogonum nudum var. pubiflorum George K. Helmkamp 1990-9-23 I- 21 Modoc Warner Mtns, Goose Lake, within 0.1 mi of the Oregon border 1476 Comment
  UCR67470  Sisymbrium altissimum George K. Helmkamp 1990-9-23 I- 18 Modoc Warner Mtns, Goose Lake, within 0.1 mi of the Oregon border 1476 Comment
  UCR87514  Phlox condensata George K. Helmkamp, E. A. Helmkamp 1993-5-4 s.n. Modoc 25.6 miles NW of Canby along Calif. Hwy 139 1280 Comment
  RSA518915  Salvia aethiopis George K. Helmkamp 1990-9-23 H- 5 Modoc [No location information provided on label.] 1341 Comment
  CLARK-A1045-1040  Gilia micromeria 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-A1045-1070  Gayophytum nuttallii George K. Helmkamp 1978-5-29 Mono East Walker River CA State Highway 182 along River below Bridgeport Lake, five miles south of Nevada State Line; ; Sweetwater Creek 7.5'Q 1828 Comment
  CLARK-A1045-1241  Eriogonum caespitosum George K. Helmkamp 1978-5-30 Mono Sierra Nevada near Conway Summit, along US Highway 395; Lundy 7.5'Q Comment
  CLARK-A1045-1243  Phyllodoce breweri George K. Helmkamp 1977-7-3 Mono Sierra Nevada Tioga Pass grade, rocky slope; ; Tioga Pass 7.5'Q 2590 Comment
  CLARK-A1045-1246  Athyrium alpestre subsp. americanum George K. Helmkamp 1977-7-3 Mono Sierra Nevada Tioga Pass grade, steep, rocky slope among Pinus flexilis; ; Tioga Pass 7.5'Q 2590 Comment
  RSA519155  Monardella odoratissima subsp. pallida George K. Helmkamp 1990-8-2 s.n. Mono Between Mammoth and Lake Mary. 2591 Comment
  RSA614911  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 1997-9-8 2262 Mono South side of Lake Mary, South of Mammoth Lakes. 2744 Comment
  RSA614923  Ericameria suffruticosa George K. Helmkamp 1990-8-3 s.n. Mono Top of Mammoth Mt. 3354 Comment
  RSA615115  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 1997-9-8 2278 Mono South side of Lake Mary, South of Mammoth Lakes. 2744 Comment
  SEINET1004528  Muhlenbergia asperifolia George K. Helmkamp 1994-1 107 -1 Mono Long Valley. Shore of Owens River, 2.5 mi. NW of the bridge at Benton's Crossing 2118 Comment
  SEINET269159 Image available Muhlenbergia asperifolia G. Helmkamp 1994-7-28 107 -1 Mono Long Valley. 2.5mi NW of Benton's Crossing bridge of the Owen's River. 2118 Comment
  SEINET3222771 Image available Agrostis scabra George K. Helmkamp 1985-8-20 885 -15 Mono Meadow and edge of stream along the Owens River at Big Springs Campground, 7 air miles NE of Mammoth Lakes, above Arcularius Ranch. 2190 Comment
Read comments
Oct 23 2014
  UCD99112  Monolepis nuttalliana G. K. Helmkamp; E. A. Helmkamp 1998-8-10 4337 Mono White Mountains. Campito Meadow, west of White Mountain Road at Poison Creek. 1003 Comment
  UCR102564  Calyptridium umbellatum George K. Helmkamp, E. A. Helmkamp 1997-9-10 2331 Mono Eastern Sierra Nevada/Mono Basin, Big Sand Flat along CA Hwy 120 at Pilot Spring Road, southeast of Mono Lake 2439 Comment
  UCR102576  Senecio integerrimus var. exaltatus George K. Helmkamp, E. A. Helmkamp 1997-9-11 2355 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR102578  Drymocallis lactea var. lactea George K. Helmkamp, E. A. Helmkamp 1997-9-11 2352 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR102593  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 1997-9-11 2384 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR114347  Carex integra George K. Helmkamp, E. A. Helmkamp 1997-9-8 2269 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR114354  Purshia tridentata var. tridentata George K. Helmkamp, E. A. Helmkamp 2000-7-17 5820 Mono Sierra Nevada Mountains, South Twin Lake along Lake Mary Road, 3 miles SW of Mammoth Lakes 2561 Comment
  UCR114372  Agrostis idahoensis George K. Helmkamp, E. A. Helmkamp 1997-9-8 2273 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR115820  Atriplex rosea George K. Helmkamp 2000-10-7 6221 Mono Long Valley, Owens River, 0.6 mi NW of Benton's Crossing. 1814 Comment
  UCR115853  Senecio integerrimus var. exaltatus George K. Helmkamp, E. A. Helmkamp 2000-7-18 5853 A Mono Eastern Sierra Nevada Mountains, Humboldt-Toiyabe National Forest, 5.1 mi west of US Hwy 395 at Conway Summit, east of Trumbull Lake, on Virginia Lake Road 2927 Comment
  UCR116021  Antennaria corymbosa George K. Helmkamp, E. A. Helmkamp 2000-7-18 5876 Mono Eastern Sierra Nevada Mountains, Humboldt-Toiyabe National Forest, 5.1 mi west of US Hwy 395 at Conway Summit, east of Trumbull Lake, on Virginia Lake Road 2927 Comment
  UCR121742  Montia chamissoi George K. Helmkamp, E. A. Helmkamp 1998-8-11 4324 Mono White Mountains, Campito Meadow, west of White Mountain Road at Poison Creek 3293 Comment
  UCR122346  Mitella breweri George K. Helmkamp, Elizabeth Helmkamp 2000-7-19 5895 Mono Sierra Nevada Mountains., West side of Lake Mary, southwest of Mammoth Lakes 2652 Comment
  UCR122348  Achnatherum occidentale subsp. occidentale George K. Helmkamp, Elizabeth Helmkamp 2000-7-19 5894 Mono Sierra Nevada Mountains., West side of Lake Mary, southwest of Mammoth Lakes 2652 Comment
  UCR123125  Phyllodoce breweri George K. Helmkamp, E. A. Helmkamp 1998-8-13 4417 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR129541  Crepis acuminata George K. Helmkamp, E. A. Helmkamp 2001-7-8 6829 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR129549  Penstemon rostriflorus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6827 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR132153  Agropyron trachycaulum George K. Helmkamp, E. A. Helmkamp 1993-7-28 188 Mono Sierra Nevada Mountains, Long Valley mesa at the junction of Owens River Road and Lake Crowley 2104 Comment
  UCR132167  Lupinus argenteus var. argenteus George K. Helmkamp, E. A. Helmkamp 1993-7-28 180 Mono Sierra Nevada Mountains, Long Valley along Owens Gorge Road about 5 mi north of Tom's Place 2256 Comment
  UCR13787  Eriogonum caespitosum George K. Helmkamp 1973-6-14 s.n. Mono Eastern Sierra Nevada, Hot Creek Rd. c. 5 miles east of US-395 2200 Comment
  UCR143558  Aquilegia formosa George K. Helmkamp, E. A. Helmkamp 2000-7-17 5839 Mono Sierra Nevada Mtns., W side of Lake Mary, SW of Mammoth Lakes 2720 Comment
  UCR143562  Luzula parviflora George K. Helmkamp, E. A. Helmkamp 2000-7-17 5840 Mono Sierra Nevada Mtns., W side of Lake Mary, SW of Mammoth Lakes 2720 Comment
  UCR14397  Chrysothamnus nauseosus George K. Helmkamp 1974-8-21 s.n. Mono Eastern Sierra Nevada Mountains, dry roadside near McGee Creek and US Hwy 395 652 Comment
  UCR15002  Stipa williamsii George K. Helmkamp 1976-6-22 s.n. Mono Sierra Nevada Mtns., Arcularius Ranch along Owens River 2134 Comment
  UCR15463  Ericameria parryi var. vulcanica George K. Helmkamp 1977-9-1 s.n. Mono Owens Valley, beside the Owens River at the Arcularius Ranch 2165 Comment
  UCR257895  Dieteria canescens George K. Helmkamp, Amy Barnes 2014-8-27 23050 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 0.6 mile south of the junction with Big Springs Road 2360 Comment
  UCR257900  Epilobium brachycarpum George K. Helmkamp, Amy Barnes 2014-8-27 23063 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 4.7 miles west of the junction with CA-395 2040 Comment
  UCR275046  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, E. A. Helmkamp 2000-7-17 5813 Mono Sierra Nevada Mountains, South Twin Lake along Lake Mary Road, 3 miles SW of Mammoth Lakes 2561 Comment
  UCR40585  Kelloggia galioides George K. Helmkamp 1985-8-20 885- 10 Mono Owens Valley, along the Owens River, at Big Springs Campground, 7 air miles NE of Mammoth Lakes, above Arcularius Ranch 2195 Comment
  UCR40966  Chenopodium strictum var. glaucophyllum George K. Helmkamp 1985-8-22 885- 36 Mono Sierra Nevada Mtns., Mammoth Village 2439 Comment
  UCR51466  Galium trifidum George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Big Spring, beside Owens River 2256 Comment
  UCR51572  Rorippa curvisiliqua George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Big Spring, beside Owens River 2256 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
  UCR57543  Cryptantha ambigua George K. Helmkamp 1989-8-1 s.n. Mono Sierra Nevada Mtns., West Walker River, at Hwy 395, 4 mi. south of Walker 1890 Comment
  UCR57982  Juncus macrandrus George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR59786  Hieracium albiflorum George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR59982  Hordeum brachyantherum subsp. californicum George K. Helmkamp 1988-9-8 s.n. Mono Eastern Sierra Nevada Mtns., Hwy 395, at Deadman's Pass 2451 Comment
  UCR60014  Solidago spectabilis George K. Helmkamp 1988-9-8 s.n. Mono Sierra Nevada Mtns., SW side of Mono Lake, between the lake and US Hwy 395 1951 Comment
  UCR67408  Saxifraga tolmiei George K. Helmkamp 1990-8-3 s.n. Mono Sierra Nevada Mtns., top of Mammoth Mountain 3354 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
  UCR82210  Arnica George K. Helmkamp 1994-7-28 103- 11 Mono Eastern Sierra Nevada Mtns., Long Valley, Crowley Lake Road at Whiskey Creek, 3 miles east of Tom's Place 2119 Comment
  UCR89430  Eriogonum baileyi var. baileyi George K. Helmkamp 1990-8-2 s.n. Mono Sierra Nevada Mtns, between Mammoth and Lake Mary 2591 Comment
  UCR95901  Eriogonum brachypodum George K. Helmkamp 1996-10-17 1255 Mono 1.2 mi NNE of Benton Hot Springs, beside Calif. Hwy 120 1799 Comment
  UCR96388  Myriophyllum sibiricum George K. Helmkamp 1996-9-26 1230 Mono Sierra Nevada Mtns, Twin Lakes north of city of Mammoth Lakes 2622 Comment
  OBI39258  Ericameria parryi var. aspera G. K. Helmkamp 1985-8-22 885 -31 Mono ca. 5 mi N of Mammoth turnoff on US Hwy 395 2438 Comment
  RSA443501  Polygonum arenastrum George K. Helmkamp 1987-6-17 s.n. Mono Long Valley: Owens River, 2.5 mi. upstream from Benton Crossing. 2104 Comment
  RSA511537  Atriplex rosea George K. Helmkamp 1988-9-8 s.n. Mono SW side of Mono Lake, between the lake and Highway 395 1951 Comment
  IRVC29061  Clarkia purpurea subsp. quadrivulnera G. K. Helmkamp, E. A. Helmkamp 2000-4-24 5483 A Monterey Nacimiento Rd. 12 mi N of Gorda and 3.8 mi E of CA-1. Central outer coast ranges. 549 Comment
  SD193321  Clarkia speciosa subsp. speciosa G. K. Helmkamp, E. A. Helmkamp 2005-5-12 9437 Monterey 8.0 miles west of US 101 on Highway CA-G-18 in Hames Valley. 341 Comment
  UCD109014  Lupinus nanus G. K. Helmkamp; Elizabeth Helmkamp 2005-5-12 9462 Monterey Central Coast Ranges:WNW of Lockwood along Hwy G-14; mile-28 on the road. 329 Comment
  UCR102144  Phacelia distans George K. Helmkamp, E. A. Helmkamp 1998-5-14 3671 Monterey Along Calif. Hwy 25, 17.6 mi. NE of the jct with Calif. Hwy 198 488 Comment
  UCR103984  Carex subfusca George K. Helmkamp, E. A. Helmkamp 1997-6-23 2087 Monterey Central Coast, small side tributary off Willow Creek [Los Burros] Rd., c. 1 mi. north of Gorda & c. 1.7 mi from US Hwy 1 274 Comment
  UCR118260  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2000-4-24 5505 Monterey Los Padres National Forest, Nacimiento Rd. (starts about 12 mi north of Gorda), 10.2 mi east of Calif. Hwy 1; at Sherlock Creek 595 Comment
  UCR118282  Briza minor George K. Helmkamp, E. A. Helmkamp 2000-4-24 5531 Monterey South Coast Range, west end Salinas Valley; Nacimiento-Fergusson Rd., 1.5 miles west of Mission Rd. just south of Mission San Antonio 320 Comment
  UCR121611  Malva parviflora George K. Helmkamp, E. A. Helmkamp 2002-4-22 7610 Monterey Salinas Valley, 13.3 mi east of US-101 along Calif. Hwy 198 in the general area of Mustang Ridge 457 Comment
  UCR121926  Eriophyllum confertiflorum var. confertiflorum George K. Helmkamp, E. A. Helmkamp 2002-4-19 7438 Monterey Santa Lucia Mountains, Los Burros Rd. (N of Gorda); 0.9 mi east of Calif. Hwy 1 122 Comment
  UCR121928  Sisyrinchium bellum George K. Helmkamp, E. A. Helmkamp 2002-4-19 7439 Monterey Santa Lucia Mountains, Los Burros Rd. (N of Gorda); 0.9 mi east of Calif. Hwy 1 122 Comment
  UCR122619  Lotus scoparius var. scoparius George K. Helmkamp, E. A. Helmkamp 1998-5-19 3853 Monterey Reservoir area., San Antonio Rd 0.7 mi north of G-14 (Interlake Rd between San Antonio and Nacimiento reservoirs) 335 Comment
  UCR123079  Rubus parviflorus George K. Helmkamp, E. A. Helmkamp 2002-4-19 7493 Monterey Santa Lucia Mountains, Los Burros Rd. (N of Gorda), 1.6 mi east of Calif. Hwy 1 at South Fork of Willow Creek 366 Comment
  UCR127075  Clarkia purpurea George K. Helmkamp, E. A. Helmkamp 1998-5-19 3828 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127083  Navarretia mitracarpa George K. Helmkamp, E. A. Helmkamp 1998-5-19 3843 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127113  Pholistoma auritum var. auritum George K. Helmkamp, E. A. Helmkamp 1998-5-19 3818 Monterey Central Coast Ranges, Salinas Valley Quinado Cyn., 12 mi south of King City along (G-14) Jolon Road 412 Comment
  UCR127121  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 1998-5-19 3859 Monterey Reservoir area., San Antonio Rd 0.7 mi north of G-14 (Interlake Rd between San Antonio and Nacimiento reservoirs) 335 Comment
  UCR127129  Castilleja affinis subsp. affinis George K. Helmkamp, E. A. Helmkamp 1998-5-19 3817 Monterey Central Coast Ranges, Salinas Valley Quinado Cyn., 12 mi south of King City along (G-14) Jolon Road 412 Comment
  UCR129959  Calochortus splendens George K. Helmkamp, E. A. Helmkamp 2000-4-24 5543 Monterey Outer south coast ranges., Nacimiento Road, 10.4 mi west of Mission Road, just south of Mission San Antonio 457 Comment
  UCR130605  Arctostaphylos hooveri George K. Helmkamp, E. A. Helmkamp 1999-5-21 4870 Monterey Santa Lucia Mountains, Willow Creek Road, 6.3 mi east of Calif. Hwy 1 north of Gorda 1037 Comment
  UCR130613  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 1999-5-21 4859 Monterey Santa Lucia Mountains, Willow Creek Rd 1.7 mi east of Calif. Hwy 1 north of Gorda 290 Comment
  UCR130621  Madia madioides George K. Helmkamp, E. A. Helmkamp 1999-5-21 4872 Monterey Santa Lucia Mountains, Willow Creek Road, 6.3 mi east of Calif. Hwy 1 north of Gorda 1037 Comment
  UCR141119  Plagiobothrys tenellus George K. Helmkamp, Elizabeth Helmkamp 2000-4-24 5515 Monterey Coast Ranges, Nacimiento-Ferguson Rd., (starts c. 12 mi. north of Gorda) 10.2 mi east of Calif. Hwy 1 at [Slickrock] Creek 457 Comment
  UCR158890  Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 2005-5-12 9440 Monterey Central Coast Ranges, 8 mi west of US-101 on Calif. Highway G18 in Hames Valley 341 Comment
  UCR159379  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2005-5-12 9462 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  UCR159429  Chorizanthe membranacea George K. Helmkamp, E. A. Helmkamp 2005-5-12 9457 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  UCR161656  Briza maxima George K. Helmkamp, E. A. Helmkamp 2005-5-17 9486 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  UCR161658  Stachys bullata George K. Helmkamp, E. A. Helmkamp 2005-5-17 9488 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  UCR161662  Vicia sativa subsp. sativa George K. Helmkamp, E. A. Helmkamp 2005-5-17 9492 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  UCR170276  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2005-5-12 9468 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  CAS-BOT-BC257634  Nemophila pedunculata George K. Helmkamp; E. A. Helmkamp 2011-6-9 17518 Nevada Northern Sierra Nevada Mountains Foothills: Tyler Foote Crossing Road, 3.3 miles north of its junction with Grizzly Hill Road, NE of North Columbia near the Sierra Co. line/Middle Yuba River 878 Comment
  CAS-BOT-BC334219  Paspalum dilatatum George K. Helmkamp; E. A. Helmkamp 2012-10-5 19990 Nevada Northern Sierra Nevada Mountains: Foothills. Fiddletown Road, 1.5 miles W of Fiddletown 466 Comment
  RSA0012014  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2010-8-26 16862 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
  RSA0012021  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2010-8-26 16830 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
  RSA0053708  Elymus cinereus G. K. Helmkamp, E. A. Helmkamp 2012-9-25 19931 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
  RSA792000  Prunella vulgaris var. lanceolata George K. Helmkamp, E. A. Helmkamp 2012-6-13 19202 Nevada Northern Sierra Nevada Mountains Foothills: Maybert Road along South Yuba River, 0.6 miles northeast of the river bridge at Washington. 796 Comment
  RSA795113  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2011-6-2 17449 Nevada 2.25 miles SW (226 deg ) of French Corral, along Pleasant Valley Road, 1.1 miles south of its crossing of the South Fork Yuba River 255 Comment
  SD212609  Lupinus albifrons var. collinus G. K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10416 Nevada Along CA Highway 49, 2.1 miles north of the South Yuba River bridge. 534 Comment
  SD212629  Vicia villosa subsp. villosa G. K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10381 Nevada Cedarsong Road, 0.1 mile northeast of CA Highway 49. 637 Comment
  SD243035  Equisetum arvense George K. Helmkamp, E. A. Helmkamp 2011-9-30 18354 Nevada Foothills, northern Sierra Nevadaa 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. Wet ditch. 1189 Comment
  SD243129  Acmispon nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 2011-9-3 18363 Nevada Northern Sierra Nevada Mountains: small, open flat along CA-20, 2.6 miles west of its junction with Lowell Hill Road (Washington 7.5'Q) 1581 Comment
  SD248333  Dittrichia graveolens George K. Helmkamp, Elizabeth Helmkamp 2013-10-10 22396 Nevada Sierra Nevada Mountains Foothills: Along CA-49, ca. 0.3 mile north of the junction with Gautier Road and at the side road 20456. 99 Comment
  SEINET13203116 Image available Sisyrinchium bellum George K. Helmkamp 2014-1 22743 Nevada Northern Sierra Nevada Mountains Foothills: along CA-120, 2.3 miles west of its junction with CA-49 in Grass Valley (Grass Valley 7.5' Q.) 728 Comment
  SEINET1908774  Lathyrus latifolius G. K. Helmkamp, E. A. Helmkamp 2008-1 13458 Nevada Sierra Nevada Mountains Foothills: along CA-49, about 6 miles north of Nevada City 518 Comment
  SEINET238568  Sidalcea malviflora G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1999-6-29 5032 Nevada Northern Sierra Nevada Range: N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon. 2134 Comment
  SEINET3411999 Image available Trisetum canescens George K. Helmkamp, E. A. Helmkamp 2012-6-13 19162 Nevada Northern Sierra Nevada Mountains Foothills: Washington Road, 2.6 miles N of its junction with CA-20 1088 Comment
  SEINET3821618 Image available Agrostis exarata George K. Helmkamp, E. A. Helmkamp 2011-7-26 17868 Nevada Northern Sierra Nevada Mountains, along CA Hwy 20, 0.8 mi east of Bowman Lake Road, 1.23 mi NE (50 degrees) of Emigrant Gap and 0.35 mi N of I-80 (Blue Canyon 7.5' Q) 1541 Comment
  SEINET4560893  Fragaria vesca George K. Helmkamp, E. A. Helmkamp 2011-1 17498 Nevada Northern Sierra Nevada Mountains Foothills: Tyler Foote Crossing Road, 1.6 miles north of its junction with Grizzly Hill Road, generally north of North Columbia. 930 Comment
  SEINET4560901  Acmispon americanus var. americanus G. K. Helmkamp, E. A. Helmkamp 2010-1 16855 Nevada Northern Sierra Nevada Mountains Foothills: Donner Pass Road, 0.8 mile west of its junction with Hwy. 1-80, 0.65 mi. NE (62 degrees) of Kingvale. 1921 Comment
  UCD110381  Hypericum perforatum subsp. perforatum G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12595 Nevada Northern Sierra Nevada Mountains: Bowman Lake Road, 3.9 miles north of its junction with CA-20; in the vicinity of Fuller Lake. 1668 Comment
  UCD121972  Kelloggia galioides G. K. Helmkamp; E. A. Helmkamp 2007-8-1 12671 Nevada Northern Sierra Nevada Mountains: near Camp Spaulding; along Lake Spaulding Road 0.4 mile north of its junction with CA-20. 1573 Comment
  UCD123062  Castilleja tenuis G. K. Helmkamp; E. A. Helmkamp 2007-8-1 12659 Nevada Northern Sierra Nevada Mountains: Soda Lake Road in the vicinity of Lake Van Norden, 0.2 mile south of Donner Pass Road. 2073 Comment
  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
  UCR121445  Delphinium depauperatum George K. Helmkamp, E. A. Helmkamp 1999-6-30 5087 Nevada Northern Sierra Nevada Range, Tahoe Nat. Forest, Donner Pass Rd. (=Hwy 40), 2.2 mi. west of Lake Donner. 1997 Comment
  UCR121450  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 1999-6-30 5077 Nevada Northern Sierra Nevada Range, Tahoe Nat. Forest, Donner Pass Rd. (=Hwy 40), 2.2 mi. west of Lake Donner. 1997 Comment
  UCR173341  Ranunculus californicus George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10379 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173349  Sisyrinchium bellum George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10385 Nevada Northern Sierra Nevada Mtns., Cedarsong Road, 0.1 mi. NE of Calif. Hwy 49 (NW of Nevada City) 637 Comment
  UCR173689  Bromus tectorum George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10397 Nevada Northern Sierra Nevada Foothills, Calif. Hwy 49 at the crossing of the South Yuba River (N of Nevada City) 402 Comment
  UCR174529  Dactylis glomerata George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10417 Nevada Northern Sierra Nevada Foothills, along Calif. Hwy 49, 2.1 mi. N of the South Yuba River bridge 534 Comment
  UCR176065  Pinus contorta subsp. murrayana George K. Helmkamp, E. A. Helmkamp 2006-8-14 11251 Nevada Northern Sierra Nevada Mtns, about 0.7 mile east of Donner Pass along Donner Pass Road 2041 Comment
  UCR176071  Muhlenbergia filiformis George K. Helmkamp, E. A. Helmkamp 2006-8-14 11261 Nevada Northern Sierra Nevada Mtns, about 0.7 mile east of Donner Pass along Donner Pass Road 2041 Comment
  UCR176079  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2006-8-14 11233 Nevada Northern Sierra Nevada Mtns, just south of I-80 on Lake Valley Rd 1755 Comment
  UCR176530  Perideridia parishii subsp. latifolia George K. Helmkamp, E. A. Helmkamp 2006-8-14 11234 Nevada Northern Sierra Nevada Mtns, just south of I-80 on Lake Valley Rd 1755 Comment
  UCR179330  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2006-10-10 11518 Nevada Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49, 5.8 miles NNW of Nevada City 750 Comment
  UCR188859  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2007-7-27 12614 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 11.2 miles north of its junction with CA-20 1793 Comment
  UCR193117  Penstemon azureus subsp. angustissimus George K. Helmkamp, E. A. Helmkamp 2007-6-12 12356 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 2.9 miles north of its junction with Hwy CA-20; just north of the South Yuba River 1451 Comment
  UCR194886  Philadelphus lewisii George K. Helmkamp, E. A. Helmkamp 2007-5-26 12102 Nevada Northern Sierra Nevada Mountains Foothills, along CA-49, 6.9 miles north of Nevada City at the crossing of the South Yuba River 372 Comment
  UCR195167  Rhamnus californica subsp. tomentella George K. Helmkamp, E. A. Helmkamp 2007-5-26 12097 Nevada Northern Sierra Nevada Mountains Foothills, along CA-49, 6.9 miles north of Nevada City at the crossing of the South Yuba River 372 Comment
  UCR229473  Mimulus torreyi George K. Helmkamp, E. A. Helmkamp 2011-7-26 17874 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
  UCR229485  Scirpus microcarpus George K. Helmkamp, E. A. Helmkamp 2011-7-26 17880 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
  UCR230103  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2011-5-26 17392 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
  UCR232296  Holcus lanatus George K. Helmkamp, E. A. Helmkamp 2011-5-26 17389 Nevada Northern Sierra Nevada Mountains Foothills, SE of Grass Valley, 0.2 mile south of CA-174 at the junction of Meadow View Road and Peardale Road 834 Comment
  UCR232655  Cirsium vulgare George K. Helmkamp, E. A. Helmkamp 2011-9-30 18353 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
  UCR233117A  Madia exigua George K. Helmkamp, E. A. Helmkamp 2011-7-17 17747 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
  UCR233172B  Gilia capitata subsp. pedemontana George K. Helmkamp, E. A. Helmkamp 2011-7-17 17764 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
  UCR233227  Sedum spathulifolium George K. Helmkamp, E. A. Helmkamp 2011-6-9 17521 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 3.3 miles north of its junction with Grizzly Hill Road, NE of North Columbia near the Sierra Co. line/Middle Yuba River 878 Comment
  UCR233421  Iris hartwegii subsp. hartwegii George K. Helmkamp, E. A. Helmkamp 2011-6-9 17526 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 3.3 miles north of its junction with Grizzly Hill Road, NE of North Columbia near the Sierra Co. line/Middle Yuba River 878 Comment
  UCR233621  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2011-7-17 17783 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road just northeast of its junction with CA-174, 1.25 mi. east (91 deg. ) of Peardale 778 Comment
  UCR233629  Phacelia hastata var. hastata George K. Helmkamp, E. A. Helmkamp 2011-6-9 17509 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 3.0 miles north of its junction with Grizzly Hill Road, generally north of North Columbia 884 Comment
  UCR233652  Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 2011-7-17 17759 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
  UCR233668  Ceanothus integerrimus George K. Helmkamp, E. A. Helmkamp 2011-6-9 17505 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 3.0 miles north of its junction with Grizzly Hill Road, generally north of North Columbia 884 Comment
  UCR234164  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2010-8-26 16855 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
  UCR234176  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2010-8-26 16861 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
  UCR234581  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2011-6-2 17437 Nevada Northern Sierra Nevada Mountains Foothills, Lake Wildwood, along Pleasant Valley Road, 1.2 miles north of its junction with CA-20 433 Comment
  UCR234589  Eriogonum umbellatum var. polyanthum George K. Helmkamp, E. A. Helmkamp 2010-8-26 16837 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
  UCR234642  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-6-2 17441 Nevada Northern Sierra Nevada Mountains Foothills, Lake Wildwood, along Pleasant Valley Road, 1.2 miles north of its junction with CA-20 433 Comment
  UCR237100  Anagallis arvensis George K. Helmkamp, E. A. Helmkamp 2012-4-21 18817 Nevada Northern Sierra Nevada Mountains Foothills, junction of Perimeter Road and Mackinaw Way, 14.3 miles NW (336 deg. ) of Auburn 409 Comment
  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
  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
  UCR237375  Tellima grandiflora George K. Helmkamp, E. A. Helmkamp 2012-6-13 19188 Nevada Northern Sierra Nevada Mountains Foothills, Washington Road, 5.6 miles north of its junction with CA-20 and along Washington Creek 787 Comment
  UCR237383  Agoseris retrorsa George K. Helmkamp, E. A. Helmkamp 2012-6-13 19169 Nevada Northern Sierra Nevada Mountains Foothills, Washington Road, 3.6 miles north of its junction with CA-20 1006 Comment
  UCR240738  Juncus effusus var. pacificus George K. Helmkamp, E. A. Helmkamp 2012-9-25 19940 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 0.1 mile south of the bridge over the South Fork Yuba River 1424 Comment
  UCR240759  Lolium perenne George K. Helmkamp, E. A. Helmkamp 2012-10-9 20011 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
  UCR240973  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2012-10-9 19993 Nevada Northern Sierra Nevada Mountains Foothills, Higgins Corner; Combie Road, 0.1 mile east of its junction with CA-49, between Auburn and Grass Valley 445 Comment
  UCR241751  Echinochloa colona George K. Helmkamp, E. A. Helmkamp 2012-10-9 20009 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
  UCR242326  Galium parisiense George K. Helmkamp, E. A. Helmkamp 2011-6-2 17418 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 1.5 miles west of its junction with CA-49 in Grass Valley 727 Comment
  UCR242556  Castilleja lacera George K. Helmkamp, E. A. Helmkamp 2011-6-2 17424 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 1.5 miles west of its junction with CA-49 in Grass Valley 727 Comment
  UCR242558  Navarretia intertexta subsp. intertexta George K. Helmkamp, E. A. Helmkamp 2011-6-2 17423 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 1.5 miles west of its junction with CA-49 in Grass Valley 727 Comment
  UCR242580  Castilleja lacera George K. Helmkamp, E. A. Helmkamp 2011-6-2 17427 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 3.3 miles west of its junction with CA-49 in Grass Valley 627 Comment
  UCR252949  Hypochaeris radicata George K. Helmkamp, Elizabeth Helmkamp 2013-8-7 22121 Nevada Sierra Nevada Mountains Foothills, junction of Table Meadow Road and Combie Road, SE of Higgins Corner 448 Comment
  UCR256643  Conyza canadensis George K. Helmkamp, Elizabeth Helmkamp 2013-10-10 22395 Nevada Sierra Nevada Mountains Foothills, Along CA-49, c. 0.3 mile north of the junction with Gautier Road and at the side road #20456 441 Comment
  UCR256664  Elymus glaucus var. glaucus George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20730 Nevada Northern Sierra Nevada Mountains, along Hwy CA-20, 1.6 miles northeast of Pine Flat Way, north of Scotts Flat Reservoir 1189 Comment
  UCR257146  Cerastium glomeratum George K. Helmkamp 2014-4-17 22756 Nevada Sierra Nevada Mountains Foothills, 8 miles west of Grass Valley, Penn Valley Drive, 0.2 mile southeast of its junction with CA-120 438 Comment
  UCR257148  Bromus diandrus George K. Helmkamp 2014-4-17 22747 Nevada Northern Sierra Nevada Mountains Foothills, along CA-120, 2.3 miles west of its junction with CA-49 in Grass Valley 729 Comment
  UCR257654  Lepidium virginicum George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19486 Nevada Northern Sierra Nevada Mountains, Stampede Meadows Road, c. 0.65 mile south of the Sierra County line 1738 Comment
  UCR257845  Cystopteris fragilis George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19478 Nevada Northern Sierra Nevada Mountains, Stampede Meadows Road, c. 0.65 mile south of the Sierra County line 1738 Comment
  UCR258171  Alyssum simplex George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19481 Nevada Northern Sierra Nevada Mountains, Stampede Meadows Road, c. 0.65 mile south of the Sierra County line 1738 Comment
  UCR272418  Aster foliaceus George K. Helmkamp, E. A. Helmkamp 2010-8-26 16850 A 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
  UCR275317  Brassica geniculata George K. Helmkamp, Elizabeth Helmkamp 2013-8-7 22109 Nevada Sierra Nevada Mountains Foothills, north of Auburn, Robles Drive, just south of the junction of Darkhorse Drive and Combie Rd. 444 Comment
  UCR116013  Pulicaria paludosa George K. Helmkamp, E. A. Helmkamp 2000-10-18 6230 Orange Newport Bay, South side of the back bay. 6 Comment
  CAS-BOT-BC228846  Torilis arvensis George K. Helmkamp; E. A. Helmkamp 2011-5-6 17218 Placer Eastern Edge of Sacramento Valley: Camp Far West Road, 0.1 mile west of its junction with McCourtney Road, c. 6.3 mi. NE (67 deg. ) of Wheatland 58 Comment
  CAS-BOT-BC249047  Phacelia hydrophylloides George K. Helmkamp; E. A. Helmkamp 2010-7-28 16675 Placer Northern Sierra Nevada Mountains: Robinson Flat campground near the junction of Forest Hill Road and Soda Springs Road, 27 miles northwest of the city of Foresthill 2040 Comment
  CAS-BOT-BC300665  Erigeron foliosus var. hartwegii G. K. Helmkamp; E. A. Helmkamp 2010-6-26 16391 Placer Sierra Nevada Mountains Foothills: Yankee Jim's Road in Bunch Canyon, 0.5 mile southeast of its junction with Canyon Way 591 Comment
  OBI81421  Triphysaria versicolor subsp. faucibarbata George K. Helmkamp, Amy Barnes 2013-3-28 20297 Placer Eastern Sacramento Valley; northwest side of junction of Riosa Road and Andressen Road, northeast of Sheridan 36 Comment
  RSA0037367  Ranunculus occidentalis George K. Helmkamp, Mary Alice Barnes 2013-4-18 20371 Placer Iowa Hill Road, 1.8 miles west of the bridge over North Fork American River, 0.6 mi. (airline) east of I-80 at Colfax 544 Comment
  RSA0039072  Collomia heterophylla George K. Helmkamp, Mary Alice Barnes 2013-5-3 20473 Placer Mosquito Ridge Road, 1.1 miles south of Forest Hill Road 962 Comment
  RSA0042076  Plectritis macrocera George K. Helmkamp, Mary Alice Barnes 2013-4-18 20347 Placer Yankee Jim Road, 0.9 mile east of its junction with Canyon Way, 4.4 miles SE (167 ) of Colfax 561 Comment
  RSA0054101  Agrostis thurberiana G. K. Helmkamp, E. A. Helmkamp 2005-9-30 9936 Placer Northern High Sierra Mountains: Hampshire Rocks Road S of the I-80 Rainbow exit (ca.2 mi E of Cisco Grove). 1805 Comment
  RSA0106510  Hordeum murinum subsp. glaucum George K. Helmkamp, Amy Barnes 2014-3-21 22634 Placer Sacramento Valley: Riosa Road at the east side of its junction with CA-65, just west of Sheridan. 33 Comment
  RSA750430  Cornus sericea subsp. sericea George K. Helmkamp, E. A. Helmkamp 2008-8-20 14020 Placer Rainbow exit south from US-80 and east of Big Bend, adjacent to the South Yuba River 1811 Comment
  RSA750890  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2007-9-14 12959 Placer along Mosquito Ridge Road 0.4 mile east of Foresthill 942 Comment
  RSA782386  Geranium molle George K. Helmkamp, E. A. Helmkamp 2010-4-23 15905 Placer along Salmon Falls Road, at Miners Valley Rd., 4.5 miles south of junction with CA-49 at Pilot Hill. 287 Comment
  RSA792717  Triphysaria versicolor subsp. faucibarbata George K. Helmkamp, E. A. Helmkamp 2011-4-10 17158 Placer along Riosa Road at the east edge of the village of Sheridan 41 Comment
  RSA795075  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2011-8-26 18189 Placer Along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat. 2050 Comment
  SBBG122299  Lupinus bicolor G. K. Helmkamp with E. A. Helmkamp 2008-4-17 13296 Placer ca. 0.2 mi N of St Hwy 193 on Fowler Rd, ca. 6 mi E of Lincoln 92 Comment
  SD234803  Ericameria nauseosa var. speciosa G. K. Helmkamp, E. A. Helmkamp 2008-8-20 14029 Placer Northern Sierra Nevada Mountains: Donner Pass Road on the west side of Donner Pass and east of Norden (Norden 7.5'Q) 2149 Comment
  SD237452  Trifolium hirtum G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15933 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River (Pilot Hill 7.5'Q) 156 Comment
  SD237562  Eriogonum nudum var. oblongifolium G. K. Helmkamp, Amy Barnes 2009-7-12 15182 Placer Sierra Nevada Mountains Foothills: along Foresthill Road 10.3 miles northeast of the town of Foresthill (Michigan Bluff 7.5'Q) 1370 Comment
  SD240827  Scandix pecten-veneris George K. Helmkamp, E. A. Helmkamp 2012-3-31 18664 Placer Northern Sierra Nevada Mountains Foothills: Old Foresthill Road, 0.7 mile northeast of its junction with CA-49 and the American River Crossing (Auburn 7.5'Q) 257 Comment
  SD240858  Erigeron inornatus var. inornatus G. K. Helmkamp, E. A. Helmkamp 2007-8-1 12645 Placer Northern Sierra Nevada Mountains: Donner Pass Road between Donner and Norden, about 0.2 mile east of the Nevada Co. border. 2150 Comment
  SD241131  Leptosiphon bicolor George K. Helmkamp, E. A. Helmkamp 2010-4-17 15899 Placer Sierra Nevada Mountains Foothills: Rattlesnake Bar Road, 8.3 miles southwest of its junction with CA-49 near Pilot Hill (Pilot Hill 7.5'Q). 308 Comment
  SD241190  Penstemon azureus var. angustissimus George K. Helmkamp, E. A. Helmkamp 2011-7-9 17683 Placer Northern Sierra Nevada Mountains Foothills: Mosquito Ridge Road, 1.6 miles southeast of its junction with Foresthill Road (Foresthill 7.5'Q) 883 Comment
  SD241824  Vicia sativa G. K. Helmkamp, E. A. Helmkamp 2010-4-17 15887 Placer Sierra Nevada Mountains Foothills: Rattlesnake Bar Road, 4.2 mils southwest of its junction with CA-49 near Pilot Hill (Pilot Hill 7.5'Q) 359 Comment
  SD243104  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2011-8-26 18176 Placer Northern Sierra Nevada Mountains: Robinson Flat, 0.1 mile sout of the campground at Forest Hill Road (Duncan Peak 7.5'Q) 2061 Comment
  SD243152  Geranium molle George K. Helmkamp, E. A. Helmkamap 2011-4-10 17135 Placer Sacramento Valley: east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road. 98 Comment
  SD243181  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2011-8-26 18189 Placer Northern Sierrra Nevada Mountains: along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat. 2050 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
  SD247498  Sanguisorba minor subsp. muricata George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20802 Placer Northern Sierra Nevada Mountains Foothills: Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road (Foresthill 7.5'Q) 768 Comment
  SD254688  Persicaria punctata George K Helmkamp, Elizabeth Helmkamp 2012-10-30 20091 Placer Sacramento Valley: South Dowd Road, 0.1 mile south of its junction with Moore Road, SW of Lincoln (Pleasant Grove 7.5'Q) 34 Comment
  SD255609  Bromus hordeaceus George K. Helmkamp, Amy Barnes 2014-3-21 22641 Placer Sacramento Valley: Sherican, Riosa Road at the west side of its junction with old CA-65 (Sheridan 7.5'Q) 32 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
  SEINET10268403  Agrostis exarata George K. Helmkamp, E. A. Helmkamp 2012-1 198895 Placer Northern Sierra Nevada Mountains: junction of Blue Canyon Road and Putt Road, just south of I-80, west of Emigrant Gap 1634 Comment
  SEINET11261857  Lathyrus nevadensis subsp. nevadensis George Helmkamp, E. A. Helmkamp 2012-5-11 18954 Placer Northern Sierra Nevada Mountains Foothills: Finning Mill Road, 1.7 miles N of its junction with Forest Hill Road (Foresthill 7.5' Q.); 0 1041 Comment
  SEINET11262283  Vicia hirsuta George Helmkamp, E. A. Helmkamp 2012-5-5 18916 Placer Northern Sierra Nevada Mountain Foothills: Lake Clementine Road, 1.2 miles west of its junction with Foresthill Road, .3 air miles SE of Clementine Dam on the American River (Auburn 7.5').; 0 396 Comment
  SEINET2473480 Image available Elymus glaucus subsp. glaucus George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-1 16436 Placer Sierra Nevada Mountains Foothills; Iowa Hill Road, 1.9 miles southeast of its junction with Canyon Way in Colfax 410 Comment
  SEINET3245989  Arabidopsis thaliana G. K. Helmkamp, E. A. Helmkamp 2010-1 15929 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River. 48 Comment
  SEINET3246122  Cordylanthus tenuis subsp. tenuis G. K. Helmkamp, E. A. Helmkamp 2007-1 12629 Placer Northern Sierra Nevada Mountains: Southeast end of Cisco Grove; along local road just before it passes under Interstate-80. 1743 Comment
  SEINET3411994 Image available Erodium botrys George K. Helmkamp, E. A. Helmkamp 2012-3-31 18649 Placer Sacramento Valley: along CA-193, 0.1 mile W of its junction with Sierra College Blvd. 88 Comment
  SEINET3411995 Image available Festuca bromoides George K. Helmkamp, E. A. Helmkamp 2012-3-31 18647 Placer Sacramento Valley: along CA-193, 0.1 mile W of its junction with Sierra College Blvd. 88 Comment
  SEINET4178829 Image available Galium triflorum George K. Helmkamp, E. A. Helmkamp 2010-8-14 16782 Placer Northern Sierra Nevada Mountains: American Hill Road (Forest Route 13), 4.7 miles south of it's junction with Foresthill Road and just south of a creek crossing. 1551 Comment
  SEINET4560780  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2011-1 18184 Placer Northern Sierra Nevada Mountains: along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat 2050 Comment
  SEINET4691685  Physocarpus capitatus George K. Helmkamp, E. A. Helmkamp 2010-1 17030 Placer Northern Sierra Nevada Mountains Foothills: along Forest Route 24 at Parker Flat and beside Forbes Creek, 1.9 miles east (airline) lf the Sugar Pine Reservoir dam. 1180 Comment
  SEINET4691689  Galium sparsiflorum subsp. sparsiflorum George K. Helmkamp, E. A. Helmkamp 2010-1 16781 Placer Northern Sierra Nevada Mountains: American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing. 1552 Comment
  SEINET9259555  Sanguisorba minor subsp. muricata George K. Helmkamp, Amy Barnes 2014-1 22806 Placer Sierra Nevada Mountains Foothils: Spring Garden Road, at the north side of tis junction with FOresthill Road, 8.4 km west of Foresthill (Colfax 7.5' Q) 719 Comment
  UCD103656  Gayophytum diffusum subsp. parviflorum G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12626 Placer Northern Sierra Nevada Mountains: Southeast end of Cisco Grove; along local road just before it passes under Interstate-80. 1744 Comment
  UCD104350  Clarkia biloba subsp. brandegeeae G. K. Helmkamp; E. A. Helmkamp 2006-6-14 10708 Placer Northern Sierra Nevada Mountains foothills. 0.2 mile N of the Forest Hill Road on unnamed road to Lake Clementine (general area NE of Auburn on Forest Hill Divide). 487 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
  UCD110908  Viola lobata G. K. Helmkamp; E. A. Helmkamp 2007-5-23 12050 Placer Northern Sierra Nevada Mountains. Along Forest Hill Road, 2.3 miles NE of Foresthill. Comment
  UCD111389  Ceanothus cordulatus G. K. Helmkamp; E. A. Helmkamp 2007-5-23 12055 Placer Northern Sierra Nevada Mountains; along Forest Hill Road, 11.1 miles northeast of Foresthill. 1463 Comment
  UCD113129  Frangula rubra G. K. Helmkamp; E. A. Helmkamp 2007-5-23 12068 Placer Nothern Sierra Nevada Mountains; Sugar Pine Road, 0.2 mile northwest of Forest Hill Road. 1360 Comment
  UCD117279  Philadelphus lewisii G. K. Helmkamp; E. A. Helmkamp 2006-6-14 10705 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
  UCD124048  Penstemon azureus G. K. Helmkamp; E. A. Helmkamp 2006-6-14 10712 Placer Northern Sierra Nevada Mountains foothills; 0.2 mile N of the Forest Hill Road on unnamed road to Lake Clementine (general area northeast of Auburn on Forest Hill Divide). 487 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
  UCD134265  Madia glomerata G. K. Helmkamp; E. A. Helmkamp 2007-8-1 12646 Placer Northern Sierra Nevada Mountains. Donner Pass Road between Donner and Norden, about 0.2 mile E of the Nevada County border. 2151 Comment
  UCD66242  Lolium multiflorum var. multiflorum G. K. Helmkamp; Elizabeth Helmkamp 2006-4-6 10128 Placer Northern Sierra Nevada Foothills: NE edge of Sacramento metropolitan area; Sierra College Road and King Ranch Road SSE of Rocklin. 122 Comment
  UCD97925  Chenopodium berlandieri G. K. Helmkamp; E. A. Helmkamp 2005-9-30 9952 Placer Northern High Sierra Mountains: Junction of Chalet and Alpine Meadows Roads W of CA-89 (near Alpine ski area). 2081 Comment
  UCD99126  Silene vulgaris G. K. Helmkamp; E. A. Helmkamp 2007-9-14 12953 Placer Northern Sierra Nevada Mountains. Along Mosquito Ridge Road, 0.4 mile east of Foresthill. 942 Comment
  UCD99397  Stellaria media G. K. Helmkamp; E. A. Helmkamp 2006-2-9 10041 Placer English Colony Way (Humphrey Road) at Sierra College Blvd near Clover Valley Creek; SE of Lincoln. 183 Comment
  UCR111004  Hackelia George K. Helmkamp, E. A. Helmkamp 1999-6-30 5109 Placer Northern Sierra Nevadas, Soda Springs Road 0.9 mi south of Donner Pass Road, approaching Ice Lakes. 2104 Comment
  UCR120231  Polygonum bistortoides George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-30 5068 Placer Northern Sierra Nevada Range, Truckee River, c. 4 mi upstream from Lake Tahoe; 1.1 mi south of Squaw Valley Road 1860 Comment
  UCR120239  Lotus nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5035 Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR120495  Triteleia hyacinthina George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-30 5073 Placer Northern Sierra Nevada Range, Truckee River, c. 4 mi upstream from Lake Tahoe; 1.1 mi south of Squaw Valley Road 1860 Comment
  UCR121486  Arabis holboellii var. retrofracta George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5020 Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR121488  Gilia capillaris George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5021 B Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR170805  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2005-9-30 9949 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR170813  Phleum pratense George K. Helmkamp, E. A. Helmkamp 2005-9-30 9944 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR170821  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2005-9-30 9946 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR171025  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2006-2-9 10043 Placer Northern Central Valley, English Colony Way [Humphrey Road] at Sierra College Blvd near Clover Valley Creek; SE of Lincoln 183 Comment
  UCR171353  Arctostaphylos manzanita subsp. manzanita George K. Helmkamp, E. A. Helmkamp 2005-10-1 9991 Placer Northern Sierra Nevada Mtns., NW of Lake Tahoe; Junction of Bear Creek Dr. and Big John Road (c. 2.2 miles west of Calif. Highway 89 and just south of Alpine Meadows Road) 2015 Comment
  UCR171545  Claytonia perfoliata George K. Helmkamp, E. A. Helmkamp 2006-2-9 10058 Placer Northern Central Valley, English Colony Way [Humphrey Road] at Sierra College Blvd near Clover Valley Creek; SE of Lincoln 183 Comment
  UCR173251  Iris George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10454 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
  UCR173259  Trifolium hirtum George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10444 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
  UCR173770  Erigeron foliosus var. hartwegii George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-14 10718 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
  UCR176265  Cichorium intybus George K. Helmkamp, E. A. Helmkamp 2006-8-11 11208 Placer Northern Sierra Nevada Mtns foothills, along Forest Hill Rd., 1.0 mile north of Forest Hill 1037 Comment
  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
  UCR190225  Cichorium intybus George K. Helmkamp, E. A. Helmkamp 2007-9-14 12949 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road 0.4 mile east of Foresthill 942 Comment
  UCR190586  Juncus effusus var. exiguus George K. Helmkamp, E. A. Helmkamp 2007-9-14 12957 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road 0.4 mile east of Foresthill 942 Comment
  UCR190588  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2007-9-14 12964 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road 15 miles east of Foresthill 832 Comment
  UCR191076  Viola purpurea George K. Helmkamp, E. A. Helmkamp 2007-5-23 12059 Placer Northern Sierra Nevada Mountains, Humbug Canyon Road, 0.2 mile northwest of Forest Hill Road, generally southwest of Westville 1576 Comment
  UCR191078  Horkelia tridentata subsp. tridentata George K. Helmkamp, E. A. Helmkamp 2007-5-23 12061 Placer Northern Sierra Nevada Mountains, Humbug Canyon Road, 0.2 mile northwest of Forest Hill Road, generally southwest of Westville 1576 Comment
  UCR191106  Arabis holboellii var. pinetorum George K. Helmkamp, E. A. Helmkamp 2007-6-12 12325 Placer Northern Sierra Nevada Mountains, Lake Spaulding Road just north of its junction with Hwy CA-20 1610 Comment
  UCR191108  Barbarea orthoceras George K. Helmkamp, E. A. Helmkamp 2007-6-12 12319 Placer Northern Sierra Nevada Mountains, Lake Spaulding Road just north of its junction with Hwy CA-20 1610 Comment
  UCR193399  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2007-5-30 12198 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 17 miles east of its junction with Forest Hill Road in Foresthill, NW of Ditch Camp 963 Comment
  UCR194697  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2007-5-30 12210 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 8.5 miles east of its junction with Forest Hill Road in Foresthill 488 Comment
  UCR194704  Raphanus raphanistrum George K. Helmkamp, E. A. Helmkamp 2007-10-28 13103 Placer Sacramento Valley, along Nicolaus Road 5.8 miles west of Lincoln 27 Comment
  UCR194942  Lathyrus nevadensis subsp. nevadensis George K. Helmkamp, E. A. Helmkamp 2007-5-18 12030 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road near the crossing of the North Fork of the West Fork of the American River; 9.5 miles southeast of Foresthill 439 Comment
  UCR194977  Triteleia ixioides subsp. anilina George K. Helmkamp, E. A. Helmkamp 2007-5-18 11997 Placer Northern Sierra Nevada Mountains Foothills, Forest Hill Road, 4.3 miles northeast of the bridge over the junction of North and West Forks of the American River 485 Comment
  UCR198536  Navarretia leucocephala subsp. leucocephala George K. Helmkamp, E. A. Helmkamp 2008-4-17 13287 Placer Sacramento Valley, Ranch House Road, 0.2 mile southeast of Sheridan 37 Comment
  UCR198538  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2008-4-17 13281 Placer Sacramento Valley, Ranch House Road, 0.2 mile southeast of Sheridan 37 Comment
  UCR200867  Cornus sericea subsp. sericea George K. Helmkamp, E. A. Helmkamp 2008-9-15 14106 Placer Northern Sierra Navada Mountains, along Foresthill Road 26 miles northeast of the city of Forest Hill 1954 Comment
  UCR201522  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2008-8-20 14013 Placer Northern Sierra Nevada Mountains, Rainbow exit south from US-80 and east of Big Bend, adjacent to the South Yuba River 1811 Comment
  UCR201762  Sorbus scopulina George K. Helmkamp, E. A. Helmkamp 2008-8-20 14018 Placer Northern Sierra Nevada Mountains, Rainbow exit south from US-80 and east of Big Bend, adjacent to the South Yuba River 1811 Comment
  UCR206361  Festuca dertonensis George K. Helmkamp, E. A. Helmkamp 2009-3-11 14387 Placer Sacramento Valley, Ranch House Road, 0.2 mile south of Sheridan 37 Comment
  UCR207114  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2009-7-16 15218 Placer Sierra Nevada Mountains, Forest Hill Road, 26.1 miles northeast of the city of Foresthill, c. 3/4 mi. NW of Sailor Flat 2020 Comment
  UCR207850  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2009-4-22 14558 Placer Sierra Nevada Mountains Foothills, Forest Hill Road 0.8 mile east of its junction with CA-49 and the North and Middle Forks of the American River 277 Comment
  UCR207886  Amsinckia retrorsa George K. Helmkamp, E. A. Helmkamp 2009-4-22 14581 Placer Sierra Nevada Mountains Foothills, Forest Hill road near Grizzly Bear House, about one mile northeast of the road to the lower end of Clementine Lake 732 Comment
  UCR207888  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2009-4-22 14571 Placer Sierra Nevada Mountains Foothills, Rucky Chuck Rd. (dirt) 1.2 miles southeast of Forest Hill Road 448 Comment
  UCR207900  Lotus denticulatus George K. Helmkamp, E. A. Helmkamp 2009-4-22 14584 Placer Sierra Nevada Mountains Foothills, Forest Hill road near Grizzly Bear House, about one mile northeast of the road to the lower end of Clementine Lake 732 Comment
  UCR208264  Plectritis brachystemon George K. Helmkamp, E. A. Helmkamp 2009-5-7 14631 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.6 miles east of its junction with Forest Hill Road in Foresthill 771 Comment
  UCR208272  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2009-5-7 14638 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.6 miles east of its junction with Forest Hill Road in Foresthill 771 Comment
  UCR208276  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2009-5-7 14644 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 8.9 miles east of its junction with Forest Hill Road in Foresthill 476 Comment
  UCR208278  Erysimum capitatum var. capitatum George K. Helmkamp, E. A. Helmkamp 2009-5-7 14640 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.6 miles east of its junction with Forest Hill Road in Foresthill 771 Comment
  UCR208545  Calystegia occidentalis subsp. occidentalis George K. Helmkamp, E. A. Helmkamp 2009-5-11 14673 Placer Sierra Nevada Mountains Foothills, Driver's Flat Road 0.8 mile south of its junction with Forest Hill Road, c. 8 miles (air) NE of Auburn 517 Comment
  UCR208550  Calochortus albus George K. Helmkamp, E. A. Helmkamp 2009-5-11 14678 Placer Sierra Nevada Mountains Foothills, Driver's Flat Road 0.8 mile south of its junction with Forest Hill Road, c. 8 miles (air) NE of Auburn 517 Comment
  UCR208586  Iris hartwegii subsp. hartwegii George K. Helmkamp, E. A. Helmkamp 2009-5-11 14653 Placer Sierra Nevada Mountains Foothills, along Forest Hill Road, 2.5 miles northeast of Foresthill 1073 Comment
  UCR208588  Horkelia tridentata subsp. flavescens George K. Helmkamp, E. A. Helmkamp 2009-5-11 14651 Placer Sierra Nevada Mountains Foothills, along Forest Hill Road, 2.5 miles northeast of Foresthill 1073 Comment
  UCR208607  Viola purpurea subsp. integrifolia George K. Helmkamp, E. A. Helmkamp 2009-5-11 14655 Placer Sierra Nevada Mountains Foothills, junction of Forest Hill Road and Chicken Hawk Road, northeast of the city of Foresthill 1338 Comment
  UCR209721  Centaurea maculosa George K. Helmkamp, E. A. Helmkamp 2009-8-12 15421 Placer Sierra Nevada Mountains, Forest Hill road, 14.0 miles northeast of the city of Foresthill 1564 Comment
  UCR209729  Penstemon roezlii George K. Helmkamp, E. A. Helmkamp 2009-8-12 15452 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 21.7 miles northeast of the city of Foresthill 1701 Comment
  UCR209739  Galium porrigens George K. Helmkamp, E. A. Helmkamp 2009-8-12 15427 Placer Sierra Nevada Mountains, Forest Hill Road, 20.5 miles northeast of the city of Foresthill 1662 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
  UCR218115  Clarkia biloba subsp. brandegeeae George K. Helmkamp, E. A. Helmkamp 2010-6-26 16379 Placer Sierra Nevada Mountains Foothills, junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  UCR218246  Grindelia hirsutula var. davyi George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16432 Placer Sierra Nevada Mountains Foothills, Yankee Jims Road on the east side of Yankee Jims Bridge over the North Fork American River, 5 mi. SE (146 deg. ) of Colfax 282 Comment
  UCR218248  Collinsia tinctoria George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16434 Placer Sierra Nevada Mountains Foothills, Iowa Hill Road, 1.9 miles southeast of its junction with Canyon Way in Colfax 415 Comment
  UCR224246  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2010-4-23 15904 Placer Sierra Nevada Mountains Foothills, along Salmon Falls Road, at Miners Valley Rd., 4.5 miles south of junction with CA-49 at Pilot Hill 287 Comment
  UCR224863  Cardamine pensylvanica George K. Helmkamp, E. A. Helmkamp 2010-4-23 15909 Placer Sierra Nevada Mountains Foothills, along Salmon Falls Road, at Miners Valley Rd., 4.5 miles south of junction with CA-49 at Pilot Hill 287 Comment
  UCR229448  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2011-7-26 17893 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
  UCR229544  Lepidium virginicum var. virginicum George K. Helmkamp, E. A. Helmkamp 2011-7-26 17864 Placer Northern Sierra Nevada Mountains, Emigrant Gap Road, 0.1 mile west of its junction with US-80, 0.65 mi. NE (65 deg. ) of Emigrant Gap 1590 Comment
  UCR231818  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 2010-8-14 16792 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
  UCR231830  Galium sparsiflorum subsp. sparsiflorum George K. Helmkamp, E. A. Helmkamp 2010-8-14 16781 Placer Northern Sierra Nevada Mountains, American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing 1552 Comment
  UCR231844  Epilobium glaberrimum subsp. glaberrimum George K. Helmkamp, E. A. Helmkamp 2010-8-14 16794 Placer Northern Sierra Nevada Mountains, American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing 1552 Comment
  UCR231857  Notholithocarpus densiflorus var. echinoides George K. Helmkamp, E. A. Helmkamp 2010-8-11 16762 Placer Northern Sierra Nevada Mountains, Finning Mill Road, 2.3 miles north of Forest Hill Road at the crossing of McBride Creek 1082 Comment
  UCR231863  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2010-10-16 17023 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 0.5 mile north of Forest Hill Road in Foresthill, near intersection with Mayflower Rd. 948 Comment
  UCR231881  Limnanthes floccosa subsp. californica George K. Helmkamp, E. A. Helmkamp 2011-4-10 17151 Placer Sacramento Valley, along Riosa Road at the east edge of the village of Sheridan 41 Comment
  UCR231889  Aira caryophyllea George K. Helmkamp, E. A. Helmkamp 2011-4-10 17146 Placer Sacramento Valley, east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road 98 Comment
  UCR231894  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2011-4-10 17141 Placer Sacramento Valley, east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road 98 Comment
  UCR232634  Pseudognaphalium canescens subsp. thermale George K. Helmkamp, E. A. Helmkamp 2010-7-28 16639 Placer Northern Sierra Nevada Mountains, Forest Route 10 (Sugar Pine Rd.), 0.8 mile north of its junction with Forest Hill Road, 8.2 miles NE (34 deg. ) of Foresthill 1311 Comment
  UCR235384  Ceanothus oliganthus George K. Helmkamp, E. A. Helmkamp 2012-5-11 18946 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.2 miles north of its junction with Forest Hill Road 1104 Comment
  UCR235391  Acer macrophyllum George K. Helmkamp, E. A. Helmkamp 2012-5-11 18953 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.7 miles north of its junction with Forest Hill Road 1041 Comment
  UCR235481  Sanicula crassicaulis George K. Helmkamp, E. A. Helmkamp 2012-5-5 18936 Placer Northern Sierra Nevada Mountains Foothills, Todd Valley Road, 1.2 miles south of its junction with Foresthill Road 779 Comment
  UCR235592  Trisetum canescens George K. Helmkamp, E. A. Helmkamp 2012-5-5 18925 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
  UCR235616  Fritillaria affinis George K. Helmkamp, E. A. Helmkamp 2012-5-5 18911 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
  UCR238582  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2012-3-31 18652 Placer Sacramento Valley, along CA-193, 0.1 mile west of its junction with Sierra College Blvd. 88 Comment
  UCR240722  Viola lobata George K. Helmkamp, E. A. Helmkamp 2012-6-19 19225 Placer Northern Sierra Nevada Mountains, Foresthill Road, 1.7 miles east of its junction with Devil's Thumb Road 1671 Comment
  UCR240914  Potentilla glandulosa subsp. glandulosa George K. Helmkamp, E. A. Helmkamp 2012-6-19 19238 Placer Northern Sierra Nevada Mountains, Foresthill Road, 9.2 miles east of its junction with Devil's Thumb Road 2055 Comment
  UCR240946  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2012-9-25 19898 Placer Northern Sierra Nevada Mountains, junction of Blue Canyon Road and Putt Road, just south of I-80, west of Emigrant Gap 1634 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
  UCR241722  Bromus inermis George K. Helmkamp, E. A. Helmkamp 2012-9-25 19922 Placer Northern Sierra Nevada Mountains, Laing Road, parallel to I-80; 0.2 mile east of its junction with Emigrant Gap Road 1611 Comment
  UCR241738  Pseudognaphalium canescens subsp. beneolens George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19805 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 10.4 miles northeast of Hidden Treasure Road, 0.45 mi. ESE of Whisky Hill 1677 Comment
  UCR241761  Eriogonum nudum var. nudum George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19807 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 10.4 miles northeast of Hidden Treasure Road, 0.45 mi. ESE of Whisky Hill 1677 Comment
  UCR242328  Stipa occidentalis George K. Helmkamp, E. A. Helmkamp 2010-7-28 16663 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 22 miles northeast of the city of Foresthill 2041 Comment
  UCR242332  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2010-7-28 16657 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 22 miles northeast of the city of Foresthill 2041 Comment
  UCR242361  Chaenactis douglasii George K. Helmkamp, E. A. Helmkamp 2010-7-28 16664 Placer Northern Sierra Nevada Mountains, Forest Hill Road, 1.6 miles west of the junction with Soda Springs Road at Robinson Flat 2040 Comment
  UCR242369  Lupinus arbustus George K. Helmkamp, E. A. Helmkamp 2010-7-28 16678 Placer Northern Sierra Nevada Mountains, Robinson Flat campground near the junction of Forest Hill Road and Soda Springs Road, 27 miles northwest of the city of Foresthill 2040 Comment
  UCR249529  Lepidium strictum George K. Helmkamp, Amy Barnes 2013-3-28 20288 Placer Eastern Sacramento Valley, northwest side of junction of Riosa Road and Andressen Road, northeast of Sheridan 36 Comment
  UCR249992  Prunella vulgaris var. lanceolata George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20807 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 Comment
  UCR250077  Lotus argophyllus var. fremontii George K. Helmkamp, Mary Alice Barnes 2013-5-3 20502 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road at the north side of the bridge over West Fork of North Fork American River, 5.2 mi. east (87 deg. ) of Forest Hill 422 Comment
  UCR250292  Madia gracilis George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20804 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 Comment
  UCR250352  Castilleja applegatei subsp. pinetorum George K. Helmkamp, Mary Alice Barnes 2013-5-3 20494 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road at the north side of the bridge over West Fork of North Fork American River, 5.2 mi. east (87 deg. ) of Forest Hill 422 Comment
  UCR250903  Lotus humistratus George K. Helmkamp, Mary Alice Barnes 2013-4-18 20345 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
  UCR253130  Trifolium hirtum George K. Helmkamp, Amy Barnes 2014-4-23 22810 Placer Sierra Nevada Mountains Foothills, Spring Garden Road, at the north side of its junction with Foresthill Road, 8.4 km west of Foresthill 720 Comment
  UCR253501  Polygonum punctatum George K. Helmkamp, Elizabeth Helmkamp 2012-10-30 20091 Placer Sacramento Valley, South Dowd Road, 0.1 mile south of its junction with Moore Road, southwest of Lincoln 34 Comment
  UCR253803  Solanum americanum George K. Helmkamp, Elizabeth Helmkamp 2012-10-30 20096 Placer Sacramento Valley, South Dowd Road, 0.1 mile south of its junction with Moore Road, southwest of Lincoln 34 Comment
  UCR253815  Raphanus raphanistrum George K. Helmkamp, Elizabeth Helmkamp 2012-10-30 20100 Placer Sacramento Valley, South Dowd Road, 0.1 mile south of its junction with Moore Road, southwest of Lincoln 34 Comment
  UCR256998  Gilia capitata subsp. pedemontana George K. Helmkamp, Amy Barnes 2014-4-23 22787 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
  UCR257566  Eschscholzia caespitosa George K. Helmkamp, Amy Barnes 2014-4-23 22773 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
  UCR257635  Epilobium angustifolium George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19537 Placer Northern Sierra Nevada Mountains, Sugar Bowl Road, 0.4 mile south of its junction with Donner Pass Road, just west of Lake Mary 2136 Comment
  UCR257728  Lotus corniculatus George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19522 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
  UCR257732  Monardella odoratissima subsp. pallida George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19518 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
  UCR258124  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 33 Comment
  UCR258165  Medicago polymorpha George K. Helmkamp, Elizabeth Helmkamp 2012-10-16 20041 Placer Sierra Nevada Mountains Foothills, city of North Auburn, corner of Locksley Lane and CA-49 384 Comment
  UCR258209  Verbascum blattaria George K. Helmkamp, Elizabeth Helmkamp 2012-10-20 20047 Placer Sierra Nevada Mountains Foothills, North Auburn; unnamed dirt road on east side of CA-49, between Rock Creek Road and Locksley Lane 387 Comment
  UCR258537  Plantago lanceolata George K. Helmkamp, Amy Barnes 2014-3-21 22625 Placer Sacramento Valley, Riosa Road at the east side of its junction with CA-65, just west of Sheridan 33 Comment
  UCR259014  Vicia villosa subsp. villosa George K. Helmkamp, Amy Barnes 2014-3-21 22627 Placer Sacramento Valley, Riosa Road at the east side of its junction with CA-65, just west of Sheridan 33 Comment
  UCR259863  Baccharis pilularis George K. Helmkamp, Elizabeth Helmkamp 2013-11-2 22460 Placer Sacramento Valley, Highway CA-193 (Lincoln-Newcastle Hwy) at the junction with Gold Hill Road, 3.8 miles northwest of US-80 114 Comment
  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
  SEINET7249067  Thysanocarpus curvipes George K. Helmkamp, Mary Alice Barnes 2013-1 Placer Comment
  CAS-BOT-BC143988  Horkelia fusca var. tenella G. K. Helmkamp; Elizabeth Helmkamp 2001-7-7 6861 Plumas Sierra Nevada Mountains: CA-89, 2.3 mi SSE of its junction with CA-26 (Lake Almanor Region) 1357 Comment
  UCR123516  Navarretia intertexta subsp. intertexta George K. Helmkamp, Elizabeth Helmkamp 2001-7-7 6863 Plumas Sierra Nevada Mountains, Calif. Hwy 89, 2.3 miles SSE of its junction with Calif. Hwy 36, Lake Almanor Region 1357 Comment
  UCR123518  Eriogonum nudum var. pubiflorum George K. Helmkamp, Elizabeth Helmkamp 2001-7-7 6872 Plumas Sierra Nevada Mountains, Calif. Hwy 36, 4.3 mi SW of its junction with Calif. Hwy 89, vicinity of Lake Almanor 1463 Comment
  UCR123997  Collomia grandiflora George K. Helmkamp, E. A. Helmkamp 2001-7-6 6855 Plumas Sierra Nevada Mountains, Calif. Hwy 89, ESE of Lake Almanor at Crescent Mills 976 Comment
  CAS-BOT-BC356344  Psathyrotes ramosissima G. Helmkamp; E. Helmkamp 1998-1-17 2534 Riverside Box Canyon northeast of Mecca and 3.5 miles south of Shaver's Well 243 Comment
  CLARK-A1045-130  Lotus tomentellus George K. Helmkamp 1977-3-20 Riverside Deep Canyon dry wash of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-1309  Heterocodon rariflorum George K. Helmkamp 1979-6-6 Riverside Wolf Valley Highway S16 south of Murrieta (road to Pala), mile 5; Pechanga 7.5'Q Comment
  CLARK-A1045-142  Pholistoma membranaceum George K. Helmkamp 1978-4-1 Riverside Deep Canyon west edge of Deep Canyon; Palm Desert 15'Q Comment
  CLARK-A1045-213  Eriogonum trichopes George K. Helmkamp 1979-4-18 Riverside Indio Hills Dillon Road at dry wash; Lost Horse Mtn. 15'Q Comment
  CLARK-A1045-223  Monoptilon bellioides George K. Helmkamp 1979-4-18 Riverside Little San Bernardino Mountains 3.5 miles north of Dillon Road; bottom of wash; Lost Horse Mtn. 15'Q Comment
  CLARK-A1045-300  Crepis capillaris George K. Helmkamp 1977-3-20 Riverside Deep Canyon dry wash of Deep canyon; ; Palm Desert 15'Q Comment
  CLARK-A1045-63  Linanthus dianthiflorus George K. Helmkamp 1979-4-27 Riverside Santa Ana Mountains Wildomar 7.5'Q Comment
  CLARK-A1045-708  Astragalus douglasii George K. Helmkamp 1977-5-28 Riverside San Jacinto Mountains Lake Fulmor 7.5'Q Comment
  CLARK-A1045-73  Penstemon californicus George K. Helmkamp 1978-5-20 Riverside San Jacinto Mountains dry slope beside meadow, just northwest of Kensworthy Forest Station; Idyllwild 15'Q Comment
  CLARK-A1045-84  Sisymbrium altissimum George K. Helmkamp 1978-4-27 Riverside San Jacinto Mountains .5 mile [north northwest] from CA Highway 74; Hemet 15'Q Comment
  CLARK-A1045-872  Phacelia pachyphylla George K. Helmkamp 1978-6-1 #3 Riverside Santa Ana Mountains Wildomar 7.5'Q Comment
  HSC79071  Boerhavia triquetra G. K. Helmkamp 1983-10-8 - 19 Riverside TNC Big Morongo Preserve, S of town of Morongo Valley in Big Morongo Canyon, beside pipeline road 762 Comment
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Feb 18 2013
  HSC79227  Eriogonum fasciculatum var. polifolium G. K. Helmkamp 1983-10-8 - 24 Riverside TNC Big Morongo Preserve, S of town of Morongo Valley in Big Morongo Canyon, beside the pipeline road in the middle of the TNC owned area 762 Comment
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Feb 18 2013
  HSC79286  Chilopsis linearis G. K. Helmkamp 1984-5-5 - 9 Riverside Little San Bernardino Mtns., Big Morongo Canyon, 4 mi. below the caretaker's house at the Big Morongo Preserve 549 Comment
  RSA615329  Perityle emoryi George K. Helmkamp, E. A. Helmkamp 1998-2-18 2717 Riverside Colorado Desert: Chuckwalla Valley, 0.3 mile S of Chuckwalla Road on Graham Pass Road. Comment
  SD144431  Physalis crassifolia G. K. Helmkamp, E. A. Helmkamp 1998-2-18 2692 Riverside Colorado Desert: Midland Rd., 3.8 mi. SE of Midland, Little Maria Mtns., sandy wash Comment
  SD167138  Ditaxis neomexicana G. K. Helmkamp 1998-4-4 - 3180 Riverside 2.3 miles north of Highway I-10 on Eagle Mountain Road. 274 Comment
  SD224862  Monoptilon bellioides G. K. Helmkamp 1998-4-4 3165 Riverside Colorado Desert: 7.1 mi. N of Hwy I-10 on Eagle Mtn Rd, to the vicinity of the pumping station. 305 Comment
  SD225054  Eschscholzia parishii G. K. Helmkamp 1998-4-4 3160 Riverside Colorado Desert: 7.1 mi. N of Hwy I-10 on Eagle Mtn Rd, to the vicinity of the pumpins station 305 Comment
  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
  SEINET238184  Lithophragma affine George K. Helmkamp 1998-6-27 4117 Riverside Santa Rosa Mtns.: 5.8 mi SE of Hwy 74 along Santa Rosa Mtn Rd. below Mountain Home Spring. 1799 Comment
  SEINET3812583 Image available Nemacladus glanduliferus George K. Helmkamp 1983-4-5 483 -44 Riverside Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 488 Comment
  SEINET959100  Kelloggia galioides G. K. Helmkamp, E. A. Helmkamp 2005-1 9742 Riverside Northern Sierra Nevada Foothills: 20 mi. WSW of Lake Tahoe; Ice House Road, N of CA Highway 50 and 1.5 mi S of junction with Ice House Reservoir (Kyburz 7.5Q). 1637 Comment
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Nov 8 2013
  UCD86834  Muhlenbergia microsperma G. K. Helmkamp; E. A. Helmkamp 1998-2-18 2724 Riverside Colorado Desert: Chuckwalla Valley; 0.3 mile S of Checkwalla Rd. on Graham Pass Rd. Comment
  UCR100576  Euphorbia ophthalmica George K. Helmkamp 1997-11-7 2523 Riverside Sonoran (Colorado) Desert, Palm Springs, at the corner of El Cielo and Taquitz-McCallum. 152 Comment
  UCR101803  Datisca glomerata George K. Helmkamp, E. A. Helmkamp 1998-8-17 4440 Riverside Santa Ana Mtns., San Juan Canyon along the Ortega Hwy (Calif. Hwy 74) beside the Orange Co. line 503 Comment
  UCR102912  Cryptantha barbigera George K. Helmkamp 1998-4-4 3174 Riverside Sonoran (Colorado) Desert, 7.1 miles north of Hwy I-10 on Eagle Mtn Rd, to the vicinity of the pumping station 305 Comment
  UCR102953  Phacelia crenulata var. ambigua George K. Helmkamp 1998-4-4 3152 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR103292  Isomeris arborea George K. Helmkamp, E. A. Helmkamp 1998-2-5 2667 Riverside Little San Bernardino Mtns., 3.2 mi. north of junction of Thousand Palms Canyon Road and Dillon Road. 457 Comment
  UCR103305  Cryptantha barbigera George K. Helmkamp 1998-4-4 3150 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR103313  Gilia stellata George K. Helmkamp 1998-4-4 3175 Riverside Sonoran (Colorado) Desert, 2.3 mi. north of Hwy I-10 on Eagle Mtn Rd. 274 Comment
  UCR103321  Achyronychia cooperi George K. Helmkamp, E. A. Helmkamp 1998-2-5 2651 Riverside Sonoran (Colorado) Desert, Indio Hills, 3 mi. east of Thousand Palms & 1.1 mi. N on Amity Rd. 101 Comment
  UCR103339  Plantago ovata George K. Helmkamp 1998-2-5 2647 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Palm Springs, 1.1 mi. west of Calif. Hwy 111 on Tramway Rd. 335 Comment
  UCR103551  Aristida adscensionis George K. Helmkamp, E. A. Helmkamp 1998-1-17 2536 Riverside Sonoran (Colorado) Desert, Box Canyon, NE of Mecca and 3.5 mi south of Shavers Well. 244 Comment
  UCR103587  Marina parryi George K. Helmkamp, E. A. Helmkamp 1998-2-18 2728 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR103991  Lotus strigosus George K. Helmkamp 1998-4-3 3086 Riverside Sonoran (Colorado) Desert, West Palm Springs Village area, vic. of Hwy I-10 & Verbenia Ave.; 4 mi. north of Tamarack Rd on Cottonwood Rd. 1280 Comment
  UCR103999  Orobanche cooperi George K. Helmkamp 1998-4-4 3144 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR104005  Fagonia laevis George K. Helmkamp, E. A. Helmkamp 1998-2-5 2657 Riverside Sonoran (Colorado) Desert, Indio Hills, 3 mi. east of Thousand Palms & 1.1 mi. N on Amity Rd. 101 Comment
  UCR104013  Camissonia claviformis George K. Helmkamp 1998-4-4 3136 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR104021  Camissonia claviformis George K. Helmkamp, E. A. Helmkamp 1998-2-18 2713 Riverside Sonoran (Colorado) Desert, Midland Road., 3.8 mi. SE of Midland, Little Maria Mtns. 198 Comment
  UCR104029  Lepidium lasiocarpum George K. Helmkamp, E. A. Helmkamp 1998-2-18 2714 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR104801  Perityle emoryi George K. Helmkamp 1998-2-5 2648 Riverside Sonoran (Colorado) Desert/San Jacinto Mtns., Palm Springs, 1.1 mi. west of Calif. Hwy 111 on Tramway Rd. 335 Comment
  UCR104809  Camissonia boothii subsp. desertorum George K. Helmkamp, E. A. Helmkamp 1998-2-18 2743 Riverside Chuckwalla Mtns, Graham Pass Rd, 10.6 mi. SSW of Chuckwalla Valley Rd. 488 Comment
  UCR106422  Gilia angelensis George K. Helmkamp, A. C. Sanders 1997-3-15 1487 Riverside Skinner Lake, Grassland at base of Bachelor Mtn. and adjoining chapararal. 488 Comment
  UCR110939  Bromus marginatus George K. Helmkamp 1998-6-27 4118 Riverside Santa Rosa Mtns., 5.8 mi SE of Hwy 74 along Santa Rosa Mtn Rd. (= Santa Rosa Truck Trail = F. S. Rd. 7S02), below Mountain Home Spring 1799 Comment
  UCR110958  Camissonia strigulosa George K. Helmkamp 1998-6-27 4103 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
  UCR110962  Melilotus indicus George K. Helmkamp 1998-6-27 4090 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
  UCR110980  Penstemon spectabilis var. spectabilis George K. Helmkamp 1998-6-27 4085 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
  UCR122570  Sesbania herbacea George K. Helmkamp, E. A. Helmkamp 2000-8-29 5984 Riverside Colorado Desert., South of Mecca, where Lincoln St. crosses the Whitewater River, about 0.5 mile from the Salton Sea -67 Comment
  UCR122742  Astragalus palmeri George K. Helmkamp, E. A. Helmkamp 1998-4-24 3379 Riverside Santa Rosa Mountains, Pinyon Pines along Calif. Hwy 74 between the San Jacinto and Santa Rosa Mountains 1296 Comment
  UCR132755  Cryptantha barbigera George K. Helmkamp 1984-5-2 D- 26 Riverside Little San Bernardino Mountains, Big Morongo Canyon, 3 - 3.5 miles below the caretaker's house at the Big Morongo Preserve 610 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
  UCR29823  Gilia scopulorum George K. Helmkamp 1983-3-24 383- 16 Riverside Sonoran (Colorado) Desert, north base of the Little Chuckwalla Mountains, 1.5 miles east of Graham Pass Road 336 Comment
  UCR30073  Amsinckia tessellata George K. Helmkamp 1983-4-5 483 17 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR30094  Phacelia crenulata George K. Helmkamp 1983-4-5 483- 30 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR30099  Thelypodium lasiophyllum George K. Helmkamp 1983-4-5 483- 18 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR37615  Baccharis sergiloides George K. Helmkamp 1984-5-2 D- 2 Riverside Little San Bernardino Mountains, Big Morongo Canyon, 3 - 3.5 miles below the caretaker's house at the Big Morongo Preserve 610 Comment
  UCR71844  Nemacladus orientalis George K. Helmkamp 1992-4-16 92- 06 Riverside Western Colorado Desert, Coachella Valley, Mission Creek, 0.4 mi. south of Indian Avenue, on old Hwy 62 500 Comment
  UCR91926  Atriplex elegans George K. Helmkamp 1995-3-16 s.n. Riverside Sonoran (Colorado) Desert, Below Coxcomb Mtns., west of Rice Rd., 10.3 mi. NE of Desert Center 200 Comment
  UCR92484  Atrichoseris platyphylla George K. Helmkamp 1995-3-16 s.n. Riverside Sonoran (Colorado) Desert, Below Coxcomb Mtns., west of Rice Rd., 10.3 mi. NE of Desert Center 200 Comment
  UCR92489  Lotus tomentellus George K. Helmkamp 1995-3-16 s.n. Riverside Sonoran (Colorado) Desert, 5.6 mi NE of Desert Center on Rice Rd. 152 Comment
  UCR92606  Pectocarya platycarpa George K. Helmkamp 1995-3-16 s.n. Riverside Sonoran (Colorado) Desert, Below Coxcomb Mtns., west of Rice Rd., 10.3 mi. NE of Desert Center 200 Comment
  RSA0089622  Amsinckia intermedia George K. Helmkamp, E. Helmkamp 2010-3-26 15788 Sacramento Southern Sacramento Valley: Pony Brown Road, 0.7 miles east of its junction with Ione Road, 2.3 miles NW (338 degrees) of Eagle s Nest Airport. 81 Comment
  SD255838  Rumex acetosella George K. Helmkamp, Amy Barnes 2014-4-7 22732 Sacramento Sacramento Valley: Clay East Road, 1 mile east of its junction with CA-104 (Clay 7.5'Q) 52 Comment
  SEINET3271605 Image available Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2007-3-14 11635 Sacramento Sacramento Valley near the edge of Sierra Nevada Mountains foothills; Latrobe Rd about 5.7 miles west of Latrobe and 1.5 miles west of the El Dorado Co. line 110 Comment
  SEINET3412004 Image available Vulpia myuros var. myuros George K. Helmkamp, E. A. Helmkamp 2012-1 18554 Sacramento Sacramento Valley: Rancho Omochumnes, Indio Drive, 0.2 mile ... 64 Comment
  SEINET3821609 Image available Holocarpha virgata subsp. virgata George K. Helmkamp, E. A. Helmkamp 2011-11-19 18460 Sacramento Eastern Sacramento Valley, White Rock ROad, 0.2 mile west of its junction with Placerville Rd., 5.5 mi SE (130 degrees) of Folsom (Clarkesville 7.5' Q) 126 Comment
  SEINET3821622 Image available Leontodon taraxacoides George K. Helmkamp, E. A. Helmkamp 2010-3-26 15781 Sacramento Sacramento Valley/lower Sierra Nevada Foothills, along CA-16 (Jackson Rd.), 0.2 mile west of the Amador County line (Carbondale 7.5' Q) 82 Comment
  UCD125842  Trichostema lanceolatum G. K. Helmkamp; E. A. Helmkamp 2006-10-23 11556 Sacramento Sacramento Valley: Along Latrobe Road, 0.1 mile west of the El Dorado County line, about 3.5 miles southwest of Latrobe. 137 Comment
  UCD133944  Layia chrysanthemoides G. K. Helmkamp; E. A. Helmkamp 2007-4-5 11736 Sacramento Eastern Sacramento Valley; along Hwy CA-104, 5.6 miles west of Ione. 66 Comment
  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
  UCR187305  Lomatium caruifolium var. caruifolium George 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
  UCR201536  Amaranthus albus George K. Helmkamp, E. A. Helmkamp 2008-10-30 14288 Sacramento Southern Sacramento Valley, along Highway E13 (Twin Cities Road) 4.4 miles west of its junction with CA-99 5 Comment
  UCR201559  Epilobium densiflorum George K. Helmkamp, E. A. Helmkamp 2008-10-2 14192 Sacramento Sacramento Valley, Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  UCR205152  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2008-10-30 14296 Sacramento Southern Sacramento Valley, junction of Alta Mesa Road and Twin Cities Road (Highway E-13), northeast of Herald 15 Comment
  UCR233135B  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-3-26 15776 Sacramento Sacramento Valley/lower Sierra Nevada Foothills, along CA-16 (Jackson Rd.), 0.2 mile west of the Amador County line 82 Comment
  UCR235139  Dittrichia graveolens George K. Helmkamp, E. A. Helmkamp 2011-11-19 18464 Sacramento Eastern Sacramento Valley, Stonehouse Road 0.2 mile north of its junction with CA-16/Jackson Rd., between the road and Rancho Murieta Housing area 44 Comment
  UCR237562  Raphanus sativus George K. Helmkamp, E. A. Helmkamp 2012-2-17 18548 Sacramento Sacramento Valley, along Scott Road, 2.67 miles south of its junction with White Rock Road, south of Folsom Lake and Hwy 50 76 Comment
  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
  UCR253211  Lepidium nitidum var. nitidum George K. Helmkamp, Amy Barnes 2014-4-7 22731 Sacramento Sacramento Valley, Clay East Road, 1 mile east of its junction with CA-104 52 Comment
  UCR253223  Delphinium hesperium subsp. hesperium George K. Helmkamp, Amy Barnes 2014-4-7 22737 Sacramento Sacramento Valley, along CA-104/Twin Cities Road, WNW of Rancho Seco Nuclear Generating Station 56 Comment
  UCR253564  Vicia villosa subsp. villosa George K. Helmkamp, Amy Barnes 2014-4-7 22706 Sacramento Sacramento Valley, North side of Rancho Seco Lake (Rancho Seco Recreational Park), 1.3 miles south of CA-104 76 Comment
  UCR122623  Lupinus microcarpus var. microcarpus George K. Helmkamp, E. A. Helmkamp 2001-5-29 6694 San Benito San Andrea Rift Zone, Los Gatos Rd. NW of Coalinga at the San Benito Co. line. 793 Comment
  UCR122904  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 2001-5-29 6695 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
  UCR123206  Micropus californicus var. californicus George K. Helmkamp, E. A. Helmkamp 2002-4-22 7584 San Benito San Andreas rift zone, 22.4 mi north of Monterey Co. line along Calif. Hwy 25; Bear Valley just north of junction of Calif. Hwy 146, general vicinity of Pinnacles 427 Comment
  UCR123208  Chaenactis glabriuscula var. lanosa George K. Helmkamp, E. A. Helmkamp 2002-4-22 7585 San Benito San Andreas rift zone, 22.4 mi north of Monterey Co. line along Calif. Hwy 25; Bear Valley just north of junction of Calif. Hwy 146, general vicinity of Pinnacles 427 Comment
  CLARK-A1045-245  Arenaria macradenia George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains unpaved State Highway 173, between Lake Arrowhead and Mojave River Forks Regional Park; Lake Arrowhead 7.5'Q Comment
  CLARK-A1045-249  Camissonia brevipes George K. Helmkamp 1978-3-14 San Bernardino Mojave Desert north of Victorville; sandy slope; Hodge 7.5'Q Comment
  CLARK-A1045-263  Verbena menthifolia George K. Helmkamp 1978-5-8 San Bernardino Pinto Mountains 6 miles south of Twentynine Palms; Valley Mtn. 15'Q Comment
  CLARK-A1045-350  Eriogonum reniforme George K. Helmkamp 1977-5-30 San Bernardino junction of Kelbaker Road and Interstate Highway 40; Cadiz 15'Q Comment
  CLARK-A1045-378  Ranunculus canus var. ludovicianus George K. Helmkamp 1979-6-5 San Bernardino San Bernardino Mountains just west of Stanfield cut-off, sagebrush flat, south side of lake; ; Big Bear Lake 7.5'Q 2133 Comment
  CLARK-A1045-382  Plagiobothrys californicus var. ursinus George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains Keller Peak 7.5'Q Comment
  CLARK-A1045-392  Chorizanthe xanti George K. Helmkamp 1979-5-24 San Bernardino San Bernardino Mountains Mill Creek at the San Andreas Fault; Forest Falls 7.5' Q Comment
  CLARK-A1045-441  Lewisia rediviva subsp. minor George K. Helmkamp 1979-6-5 #5 San Bernardino San Bernardino Mountains 1.5 miles east of Fawnskin; dry slope under pines; ; Fawnskin 7.5'Q 2133 Comment
  CLARK-A1045-444  Arabis parishii George K. Helmkamp 1979-6-3 San Bernardino San Bernardino Mountains 2 miles east of Fawnskin; Fawnskin 7.5'Q Comment
  CLARK-A1045-446  Atriplex confertifolia George K. Helmkamp 1977-5-29 San Bernardino Shadow Valley intersection of Kingston Road and Cima Road; creosote bush scrub; ; Clark Mt. 15'Q 1066 Comment
  CLARK-A1045-447  Lomatium nevadense var. parishii George K. Helmkamp 1979-6-5 #1 San Bernardino San Bernardino Mountains north end of Baldwin Lake; sagebrush scrub; ; Big Bear City 7.5'Q 2133 Comment
  CLARK-A1045-483  Astragalus lentiginosus var. sierrae George K. Helmkamp 1979-6-20 San Bernardino San Bernardino Mountains north end of Baldwin Lake; sagebrush; Big Bear City 7.5'Q Comment
  CLARK-A1045-493  Erigeron aphanactis George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains Big Bear City 7.5'Q Comment
  CLARK-A1045-541  Astragalus leucolobus George K. Helmkamp 1979-6-22 San Bernardino San Bernardino Mountains 300 yards north of Forest Service road 3N08 along 3N66Y; sagebrush scrub opening in yellow pine forest; ; Big Bear City 7.5'Q 2285 Comment
  CLARK-A1045-544  Arabis holboellii George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains 400 yards north of Forest Service road 3N08 along road 3N66Y; dry flat under pines; ; Big Bear City 7.5'Q 2285 Comment
  CLARK-A1045-546  Amsinckia intermedia 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-A1045-547  Gilia splendens George K. Helmkamp 1977-6-5 San Bernardino San Bernardino Mountains 5.7 miles east of Cajon Junction, off Interstate Highway 15; Cajon 7.5'Q Comment
  CLARK-A1045-583  Senecio douglasii George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert southeast edge of mountians, near Kelbaker Road; ; Flynn 15'Q 1097 Comment
  CLARK-A1045-593  Gutierrezia bracteata George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert Flynn 15'Q Comment
  CLARK-A1045-608  Selinocarpus diffusus George K. Helmkamp 1978-5-5 San Bernardino Mojave Desert on Kingston Road, 0.5 mile northeast of Cima Road; Clark Mountain 15' Q; Cima Dome 7.5' Q Comment
  CLARK-A1045-612  Eurotia lanata George K. Helmkamp 1977-5-14 San Bernardino Mesquite Mountains Clark Mt. 15'Q 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-A1045-658  Menodora spinescens George K. Helmkamp 1977-5-29 San Bernardino Cima Kelso 15' Q Comment
  CLARK-A1045-662  Phacelia tanacetifolia George K. Helmkamp 1977-5-29 San Bernardino Cima Kelso 15'Q Comment
  CLARK-A1045-670  Mentzelia veatchiana George K. Helmkamp 1977-4-21 San Bernardino Adelanto 7 miles north of Adelanto and east of U.S. 395; dry wash in creosote bush scrub; ; Victorville NW 7.5' Q 914 Comment
  CLARK-A1045-712  Astragalus mohavensis George K. Helmkamp 1978-5-8 San Bernardino Mojave Desert southwest slope, one third of the way up; Ord Mts 15'Q Comment
  CLARK-A1045-722  Lotus tomentellus George K. Helmkamp 1978-5-1 San Bernardino Mojave Desert 3.3 miles north of Slash-X Ranch, off State Highway 247; Ord Mts 15'Q Comment
  CLARK-A1045-758  Pectocarya setosa George K. Helmkamp 1977-5-29 San Bernardino Mojave Desert at north edge of Ivanpah Mountains; ; Mescal Range 15'Q 1432 Comment
  CLARK-A1045-762  Chaenactis macrantha George K. Helmkamp 1977-5-29 San Bernardino Mojave Desert Stuckey's; Cima Road at Interstate Highway 15; Mescal Range 15'Q Comment
  CLARK-A1045-770  Boerhavia torreyana George K. Helmkamp 1977-11-5 San Bernardino Morongo Valley at north edge of Morongo Valley beside State Highway 62; creosote bush scrub; Morongo Valley 7.5'Q Comment
  CLARK-A1045-810  Lupinus shockleyi George K. Helmkamp 1978-5-6 #2; 30 San Bernardino Kingston Range south slope of Kingston Range; ; Kingston Peak 15'Q 1280 Comment
  CLARK-A1045-820  Mimulus bigelovii George K. Helmkamp 1978-5-6 #1 San Bernardino Mesquite Mountains lime kilns; ; Clark Mt. 15'Q Comment
  CLARK-A1045-860  Coleogyne ramosissima George K. Helmkamp 1977-5-29 San Bernardino Mesquite Mountains Clark Mt. 15'Q Comment
  CLARK-A1045-888  Astragalus mohavensis George K. Helmkamp 1978-5-5 San Bernardino Mojave Desert on Kingston Road, 0.5 mile [northeast of Cima Road]; Clark Mountain 15' Q Comment
  HSC79027  Sphaeralcea ambigua G. K. Helmkamp 1984-4-20 20 San Bernardino TNC Big Morongo Preserve, S of town of Morongo Valley in Big Morongo Canyon, beside pipeline road in upper part of TNC area 765 Comment
  HSC79210  Bahiopsis parishii G. K. Helmkamp 1983-10-6 - 35 San Bernardino Big Morongo Preserve of TNC, S of town on Morongo Valley in Big Morongo Canyon; Little San Bernardino Mtns. 762 Comment
  HSC79231  Bebbia juncea var. aspera G. K. Helmkamp 1984-4-20 - 37 San Bernardino TNC Big Morongo Preserve, S of town of Morongo Valley in Big Morongo Canyon, beside pipeline road in upper part of TNC area 765 Comment
  RSA0095181  Gilia stellata George K. Helmkamp, E. A. Helmkamp 2001-3-30 6444 San Bernardino Eastern Mojave Desert: 13.5 mi N of CA-62 along US-95 then 0.1 mi E. 274 Comment
  RSA351417  Eriogonum brachyanthum George K. Helmkamp 1985-6-21 2 San Bernardino Town of Morongo Valley. 1/2 mile N. of corner of Vista and Pinyon Streets. 823 Comment
  RSA492928  Cirsium neomexicanum 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
  RSA567425  Chrysothamnus nauseosus subsp. mohavensis George K. Helmkamp 1993-9-22 35 -7 San Bernardino Steep canyon side with Pinon Pine. 14.4 mi. up Burns Canyon from junction of Pioneer Town and Pipes Cyn Rds. 2073 Comment
  RSA567556  Bouteloua gracilis George K. Helmkamp 1993-9-22 36 -3 San Bernardino 16.4 miles up Burns Canyon from junction of Pipes Canypn and Pioneer Town Roads. 2195 Comment
  RSA567558  Amorpha californica George K. Helmkamp 1993-9-22 36 -6 San Bernardino 16.4 miles up Burns canyon from junction of Pipes Canyon and Pioneer Town Roads. 2195 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
  SBBG103904  Mentzelia longiloba G. K. Helmkamp 1993-4-24 San Bernardino S side of Kelso sand dunes 701 Comment
  SD140175  Stephanomeria exigua G. Helmkamp 1993-9-12 23 4 San Bernardino Burns Canyon in the vicinity of Burns Spring 1520 Comment
  SD224992  Nama demissa var. demissa G. K. Helmkamp 1998-3-30 3046 San Bernardino Mojave Desert: vicinity of Twentynine Palms; Encelia Rd, 1.0 mi. N of CA hwy 62. 792 Comment
  SD232787  Ranunculus californicus G. Helmkamp 1996-6-11 1152 San Bernardino San bernardino Mtns, along SN11 southwest of City of Big Bear Lake. About 0.5 mi west of Mill Creek Road. 2255 Comment
  SEINET2042020 Image available Sisymbrium irio George Helmkamp, E. A. Helmkamp 2001-3-24 6312 San Bernardino South Central Mojave Desert; 0.3 mi W of CA-247 on Pipes Cyn Rd. 1037 Comment
  SEINET2042030 Image available Streptanthella longirostris George Helmkamp, E. A. Helmkamp 2001-3-30 6399 San Bernardino Mojave Desert; CA-62, 16.2 mi E of Utah Tr. (29 Palms) near Dale Lake. 366 Comment
  SEINET270122  Machaeranthera canescens G. Helmkamp 1993-9-22 36 -1 San Bernardino 16.4 miles up Burns Canyon from junction of Pipes Canyon and Pioneer Town Roads 2195 Comment
  SEINET3087391 Image available Eriastrum diffusum G. Helmkamp 1985-6-4 539 San Bernardino Morongo Canyon, SE of Morongo Valley, upper end of the Desert Wash Trail 777 Comment
  SEINET3090586 Image available Atriplex serenana G. Helmkamp 1985-7-6 604 San Bernardino At the front of the manager's residence. 762 Comment
  UC1529477  Phacelia distans G. Helmkamp 1985-5-9 461 San Bernardino along East Drive at w end of the Preserve Morongo Canyon (se of Morongo Valley) 762 Comment
  UCR101037  Camissonia claviformis subsp. claviformis George K. Helmkamp, E. A. Helmkamp 1998-4-9 3312 San Bernardino Mojave Desert, Between hwy 58 & the Railroad at Edwards Siding (c. halfway between Mojave & Boron). 732 Comment
  UCR101045  Streptanthella longirostris George K. Helmkamp, E. A. Helmkamp 1998-4-9 3301 A San Bernardino Mojave Desert, NW of Barstow; 2.2 mi. NE of Calif. Hwy 58 on unnamed dirt road 2.8 mi. west of Waterman Rd 701 Comment
  UCR101050  Camissonia brevipes subsp. brevipes George K. Helmkamp, E. A. Helmkamp 1998-4-9 3307 San Bernardino Mojave Desert, 2.4 mi. south of Barstow on Calif. hwy 247. 793 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
  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
  UCR101656  Abronia villosa George K. Helmkamp, E. A. Helmkamp 1998-2-26 2765 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101658  Camissonia boothii subsp. desertorum George K. Helmkamp, E. A. Helmkamp 1998-2-26 2795 San Bernardino Mojave Desert, NW side of Salt Spring Hills about 28 mi north of Baker; between the hills and Calif. Hwy 127 201 Comment
  UCR101662  Camissonia claviformis subsp. aurantiaca George K. Helmkamp, E. A. Helmkamp 1998-2-26 2800 San Bernardino Eastern Mojave Desert, Saltbush scrub flat east of Soda Lake and 5.9 mi SSE of Baker on a farm road leading to Little Cowhole Mtn. 299 Comment
  UCR102116  Eriastrum diffusum George K. Helmkamp 1984-4-29 A- 7 San Bernardino Little San Bernardino Mtns., Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters 701 Comment
  UCR102118  Cuscuta indecora var. indecora George K. Helmkamp 1983-10-8 B- 7 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, TNC Big Morongo Preserve, Morongo Valley Comment
  UCR102920  Lupinus arizonicus George K. Helmkamp 1998-4-4 3099 San Bernardino West Mojave Desert, Dale Lake, 1.8 mi. west of Iron Age Rd & 0.7 mi. north of Calif. hwy 62 366 Comment
  UCR102967  Pectocarya heterocarpa George K. Helmkamp, E. A. Helmkamp 1998-3-16 2827 San Bernardino Mojave Desert, 50 ft. north of the boundary of Joshua Tree National Park at the S end of Sunkist Rd (E of town of Joshua Tree) 884 Comment
  UCR103329  Coreopsis californica var. californica George K. Helmkamp 1998-3-30 3049 San Bernardino Mojave Desert, vicinity of Twentynine Palms; Encelia Ave., 1.0 mi. north of Calif. Hwy 62 793 Comment
  UCR103352  Brickellia desertorum George K. Helmkamp 1993-9-12 22- 03 San Bernardino San Bernardino Mtns, Burns Canyon, in the vicinity of Burns Spring 1524 Comment
  UCR103366  Gayophytum diffusum subsp. parviflorum George K. Helmkamp 1993-9-22 38- 08 San Bernardino San Bernardino Mtns., Meadow at junction of Burns Canyon and Round Valley Roads [near Rose Mine] 2073 Comment
  UCR103559  Phacelia campanularia subsp. vasiformis George K. Helmkamp, E. A. Helmkamp 1997-11-7 2526 San Bernardino Eastern Mojave Desert, Morongo Valley, 49038 Vista Drive 808 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
  UCR104796  Sesuvium verrucosum George K. Helmkamp 1998-4-4 3095 San Bernardino West Mojave Desert, Dale Lake, 1.8 mi. west of Iron Age Rd & 0.7 mi. north of Calif. hwy 62 366 Comment
  UCR104798  Rafinesquia neomexicana George K. Helmkamp 1998-4-4 3120 San Bernardino Mojave Desert, S edge of Cadiz Dry Lake, 13.1 mi. north of mile-marker 76 on Calif. hwy 62 (Twentynine Palms Hwy), east of Twentynine Palms 183 Comment
  UCR104843  Mesembryanthemum nodiflorum George K. Helmkamp 1998-4-4 3097 San Bernardino West Mojave Desert, Dale Lake, 1.8 mi. west of Iron Age Rd & 0.7 mi. north of Calif. hwy 62 366 Comment
  UCR104864  Cryptantha pterocarya var. pterocarya George K. Helmkamp, E. A. Helmkamp 1998-3-16 2838 San Bernardino Mojave Desert, 50 ft. north of the boundary of Joshua Tree National Park at the S end of Sunkist Rd (E of town of Joshua Tree) 884 Comment
  UCR116695  Lupinus andersonii George K. Helmkamp 1974-7-9 s.n. San Bernardino San Bernardino Mtns., Calif. Hwy 38 near Heart Bar State Park 1982 Comment
  UCR118306  Lycium cooperi George K. Helmkamp, E. A. Helmkamp 1998-4-18 3319 San Bernardino Central Mojave Desert., 18 mi ESE of Baker on Kelbaker Rd. 884 Comment
  UCR118308  Astragalus nuttallianus var. imperfectus George K. Helmkamp, E. A. Helmkamp 1998-4-18 3322 San Bernardino Central Mojave Desert., 18 mi ESE of Baker on Kelbaker Rd. 884 Comment
  UCR118324  Nicotiana obtusifolia George K. Helmkamp, E. A. Helmkamp 1998-4-18 3330 San Bernardino Central Mojave Desert., 18 mi ESE of Baker on Kelbaker Rd. 884 Comment
  UCR118957  Hilaria rigida George K. Helmkamp, E. A. Helmkamp 1998-4-19 3359 San Bernardino Mojave Desert, northwest side of East Cronese Lake, about 15 miles west of Baker 335 Comment
  UCR121847  Marah macrocarpa var. macrocarpa George K. Helmkamp, E. A. Helmkamp 2001-3-24 6322 San Bernardino East foothills, San Bernardino Mtns, Alluvial fan along Pioneertown Rd., 0.8 mi NW of Calif. Hwy 62 1098 Comment
  UCR121854  Descurainia pinnata subsp. glabra George K. Helmkamp, E. A. Helmkamp 2001-3-24 6313 San Bernardino Southcentral Mojave Desert, 0.3 mile west of CA Hwy 247 on Pipes Canyon Road 1037 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
  UCR122611  Euphorbia setiloba George K. Helmkamp, E. A. Helmkamp 1999-9-24 5286 San Bernardino Southern Mojave Desert., Morongo Road, 1.7 mi north of Two-Mile Road in Twentynine Palms 595 Comment
  UCR122645  Erodium texanum George K. Helmkamp, E. A. Helmkamp 1998-3-16 2845 San Bernardino Mojave Desert, north of Calif. Hwy 62 between Joshua Tree and 29 Palms; north on Leer Ave and 0.9 mile E on Amboy Rd. 732 Comment
  UCR122650  Camissonia campestris subsp. campestris George K. Helmkamp, E. A. Helmkamp 1998-3-16 2866 A 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
  UCR122792  Eriophyllum wallacei George K. Helmkamp, E. A. Helmkamp 2001-3-31 6325 San Bernardino Eastern Mojave Desert, Goffs Rd, 8.1 mi east of Goffs 610 Comment
  UCR122835  Eriogonum thomasii George K. Helmkamp, E. A. Helmkamp 2001-3-31 6354 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122932  Camissonia brevipes subsp. brevipes George K. Helmkamp, E. A. Helmkamp 2001-3-30 6462 San Bernardino Eastern Mojave Desert, 13.5 mi north of Calif. Hwy 62 along US-95 then 0.1 mi E 274 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
  UCR124082  Geraea canescens George K. Helmkamp, Elizabeth Helmkamp 2000-4-4 5359 San Bernardino Colorado River, Beside the California-Arizona border near Topock, AZ. 152 Comment
  UCR130981  Astragalus nuttallianus var. imperfectus George K. Helmkamp, E. A. Helmkamp 1998-5-3 3525 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR130989  Acamptopappus shockleyi George K. Helmkamp, E. A. Helmkamp 1998-5-3 3526 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR130994  Euphorbia albomarginata George K. Helmkamp, E. A. Helmkamp 1998-5-3 3532 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR136212  Chenopodium fremontii George K. Helmkamp, E. A. Helmkamp 1999-9-30 5307 San Bernardino East side San Bernardino Mountains., 7.3 mi up Burns cyn Rd from Rimrock Rd (NW of Pioneertown) 1799 Comment
  UCR136218  Artemisia dracunculus George K. Helmkamp, E. A. Helmkamp 1999-9-30 5297 San Bernardino San Bernardino Mountains, 5.7 miles up Burns Cyn Rd from Rimrock Rd., NW of Pioneertown 1768 Comment
  UCR136220  Phacelia ramosissima var. ramosissima George K. Helmkamp, E. A. Helmkamp 1999-9-30 5318 San Bernardino San Bernardino Mountains, junction of 2N02 (probably Round Valley Rd.) and Calif. Hwy 38 SE of Baldwin Lake 2454 Comment
  UCR14006  Eriogonum parishii George K. Helmkamp 1973-9-25 s.n. San Bernardino San Bernardino Mtns., Fawnskin 1829 Comment
  UCR14012  Isocoma acradenia var. acradenia George K. Helmkamp 1973-10-4 s.n. San Bernardino Mojave Desert, U.S. Hwy 40, at rest stop [28 miles] east of Barstow 549 Comment
  UCR141123  Baileya pleniradiata George K. Helmkamp, E. A. Helmkamp 1999-9-24 5291 A San Bernardino Southern Mojave Desert, Yucca Valley, Twentynine Palms Hwy [Hwy 62] just west of Old Woman Springs Road 991 Comment
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Aug 27 2011
  UCR14465  Lupinus excubitus George K. Helmkamp 1974-5-28 s.n. San Bernardino San Bernardino Mtns, E shore of Big Bear Lake, near the water Comment
  UCR14659  Cryptantha virginensis George K. Helmkamp 1975-6-6 s.n. San Bernardino Eastern Mojave Desert, Clark Mountain [area, Mescal Range], Mountain Pass, 0.5 mi south of Interstate 15 1463 Comment
  UCR20285  Stylocline micropoides George K. Helmkamp, F. C. Vasek 1978-5-1 s.n. San Bernardino Mojave Desert, south of East Ord Mtn. and north of the Wilson Hills along power line road 1/4 mi west of the jct. with road going NNW to Tyler Valley 1098 Comment
  UCR26751  Penstemon incertus George K. Helmkamp 1982-5-23 s.n. San Bernardino San Bernardino Mtns/ Mojave Desert, burn area where Pipes Canyon Road meets Pioneertown Road 1311 Comment
  UCR37622  Chenopodium californicum George K. Helmkamp 1984-4-20 840420- 52 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37623  Lepidium lasiocarpum George K. Helmkamp 1984-4-29 A 28 San Bernardino Little San Bernardino Mtns., Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters 701 Comment
  UCR37641  Erodium cicutarium George K. Helmkamp 1984-4-20 840420- 8 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
  UCR37716  Plantago major George K. Helmkamp 1984-4-29 A- 49 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Big Morongo Preserve of The Nature Conservancy, between the TNC parking lot and Covington Park 762 Comment
  UCR37722  Eriophyllum confertiflorum George K. Helmkamp 1984-4-29 A 34 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon. Along the pipeline rd, c. 0.25 mi below the lower border of TNC owned land 701 Comment
  UCR40590  Carex praegracilis George K. Helmkamp 1984-4-29 A 53 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve in Big Morongo Canyon, south of town of Morongo Valley. Comment
  UCR44825  Camissonia cardiophylla 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
  UCR44834  Boerhavia coccinea George K. Helmkamp 1986-10-18 s.n. San Bernardino Sonoran (Colorado) Desert, along State Hwy 62, 3.4 mi west of Earp 152 Comment
  UCR44839  Allionia incarnata George K. Helmkamp 1986-10-18 s.n. San Bernardino Sonoran (Colorado) Desert, along State Hwy 62, 3.4 mi west of Earp 152 Comment
  UCR51292  Eriogonum maculatum 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
  UCR51300  Baileya multiradiata 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
  UCR59833  Chloris virgata George K. Helmkamp 1989-7-20 s.n. San Bernardino Mojave Desert, Yucca Valley 976 Comment
  UCR78016  Phoradendron juniperinum George K. Helmkamp 1993-9-18 29- 11 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
  UCR78022  Aristida purpurea var. parishii George K. Helmkamp 1993-9-18 29- 01 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
  UCR78903  Lotus purshianus George K. Helmkamp 1993-9-22 34- 17 San Bernardino San Bernardino Mtns., 6.7 mi. up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 1529 Comment
  UCR79277  Salsola tragus George K. Helmkamp 1993-9-12 22- 11 San Bernardino San Bernardino Mtns, Burns Canyon, in the vicinity of Burns Spring 1524 Comment
  UCR79284  Mimulus pilosus George K. Helmkamp 1993-9-22 34- 28 San Bernardino San Bernardino Mtns., 6.7 mi. up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 1529 Comment
  UCR79289  Castilleja linariifolia George K. Helmkamp 1993-9-22 34- 08 San Bernardino San Bernardino Mtns., 6.7 mi. up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 1529 Comment
  UCR89993  Gilia filiformis 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
  UCR91974  Ribes nevadense George K. Helmkamp 1996-6-11 1126 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR93394  Camissonia campestris George K. Helmkamp 1993-4-24 s.n. San Bernardino Eastern Mojave Desert, 3 mi north of Kelso along Kelbaker Road [vicinity of Hayden] 793 Comment
  UCR93399  Cryptantha maritima George K. Helmkamp 1993-4-24 s.n. San Bernardino Eastern Mojave Desert, bajada between the Granite Mtns & Kelbaker Rd, 5.1 mi. north of Hwy I-40 1220 Comment
  UCR93402  Amsinckia tessellata George K. Helmkamp 1995-3-16 s.n. San Bernardino Mojave Desert, north of Coxcomb Mts., Twentynine Palms (62) Hwy, 11.8 miles west of Rice Road (Hwy 177) 381 Comment
  UCR97951  Eleocharis rostellata George K. Helmkamp 1985-4-25 354 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve in Big Morongo Canyon, south of town of Morongo Valley. 762 Comment
  UCR99049  Stylocline micropoides George K. Helmkamp 1993-4-24 s.n. San Bernardino Eastern Mojave Desert, south side of Kelso sand dunes 701 Comment
  UCSB50307  Isocoma acradenia Helmkamp; Clarke; Derby 1973-10-16 San Bernardino Afton near Baker Comment
  VVC29  Osmorhiza chilensis G. K. Helmkamp 1996-6-11 1125 San Bernardino San Bernardino Mtns., 1.2 mi. SW of Tulip Ave, City of Big Bear Lake 2143 Comment
  CLARK-A1045-898  Silene gallica George K. Helmkamp 1978-4-15 San Bernardino Fontana Sierra Avenue, disturbed roadside; Fontana 7.5'Q Comment
  SD140236  Juncus saximontanus G. Helmkamp 1993-9-22 37 7 San Bernardino Round Valley Road, I(c) mile east of CA-38, 8 miles southeast of Big Bear City, marshy roadside seep. 2377 Comment
  SEINET4558687  Cryptantha micrantha George Helmkamp 1993-1 San Bernardino At the south side of Kelso sand dunes 701 Comment
  CLARK-A1045-1261  Frasera parryi George K. Helmkamp 1979-6-6 San Diego Lake Henshaw 2 miles toward Julian from Lake Henshaw; Warners Ranch 7.5'Q Comment
  CLARK-A1045-1266  Malacothamnus densiflorus George K. Helmkamp 1979-6-6 San Diego Warner Springs Warner Springs roadside; Warner Springs 7.5'Q 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-A1045-1276  Scirpus microcarpus George K. Helmkamp 1979-6-6 San Diego Pala Creek beside Creek, 2 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-A1045-1302  Camissonia chamaenerioides George K. Helmkamp 1978-3-17 San Diego Anza-Borrego Desert State Park Tierra Blanca Mountains; Mountain Palm Springs; dry, rocky slope; Sweeney Pass 7.5'Q Comment
  CLARK-A1045-1304  Cercocarpus betuloides George K. Helmkamp 1978-3-25 San Diego Cleveland Mountains east of Barrett; Cameron Corners 7.5'Q Comment
  CLARK-A1045-1540  Stylocline gnaphaloides George K. Helmkamp 1978-3-16 San Diego Anza-Borrego Desert State Park Bisnaga Alta Wash; Sweeney Pass 7.5'Q 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
  RSA614475  Mimulus aurantiacus George K. Helmkamp 1997-7-29 2245 San Diego San Onofre State Beach. 15 Comment
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Sep 16 2007
  RSA628393  Lathyrus vestitus subsp. alefeldii George K. Helmkamp, E. A. Helmkamp 1999-4-15 4657 -a San Diego Ca 5 mi NE of Alpine. Old Viejas Grade at the E side of Viejas Mtn., 0.6 mi E of the Viejas Indian Reservation. 854 Comment
  UCR114244  Atriplex semibaccata George K. Helmkamp 1997-7-29 2235 San Diego South Coast, San Onofre State Beach 30 Comment
  UCR130629  Lupinus truncatus George K. Helmkamp, E. A. Helmkamp 1999-4-15 4651 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
  UCR130652  Pellaea mucronata George K. Helmkamp, E. A. Helmkamp 1999-4-15 4661 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
  UCR130666  Anisocoma acaulis George K. Helmkamp, E. A. Helmkamp 1999-4-18 4695 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
  UCR130668  Baccharis salicifolia George K. Helmkamp, E. A. Helmkamp 1999-2-26 4625 San Diego Chula Vista, W end of E Street between I-5 & San Diego Bay. In disturbed soil of parking lot for Chula Vista Preserve. 8 Comment
  UCR130674  Gilia diegensis George K. Helmkamp, E. A. Helmkamp 1999-4-15 4638 San Diego Between Lake Henshaw & Matagual Valley, Barrett Hill Rd off of Hwy-79, c. 6.5 mi SW of Warner Hot Springs 838 Comment
  UCR130702  Mimulus brevipes George K. Helmkamp, E. A. Helmkamp 1999-4-17 4677 San Diego Peninsular Ranges, Barrett-Smith Rd between Barrett Junction & Barrett School Rd. NE of Calif. Hwy 94 268 Comment
  UCR94637  Crypsis schoenoides George K. Helmkamp 1996-9-11 1158 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
  CDA25243  Hirschfeldia incana G. K. Helmkamp, E. A. Helmkamp 2007-10-13 13085 San Joaquin Northern San Joaquin Valley; Along Highway CA-88, 1.0 mile southwest of Clements at Disch Road. Comment
  CDA25628  Epilobium brachycarpum G. K. Helmkamp, E. A. Helmkamp 2008-10-9 14229 San Joaquin San Joaquin Valley; Junction of Collier Road and CA-88, 1.1 miles north of the junction of CA-12 and CA-88, northeast of Lodi. Comment
  JEPS119427  Layia munzii G. K. Helmkamp, E. A. Helmkamp 2010-4-7 15836 San Joaquin Northeast San Joaquin Valley, along CA-88, 1.1 miles southwest of the Amador County line, 6 miles NE (33 deg. ) of Clements. Comment
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Apr 16 2019
  SD247296  Vulpia myuros var. hirsuta George K. Helmkamp, Elizabeth Helmkamp 2012-4-7 18719 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
  UC2044624  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2010-4-7 15823 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. (Clements 7.5' Q.) Comment
  UCR194726  Grindelia camporum var. camporum George K. Helmkamp, E. A. Helmkamp 2007-10-13 13079 San Joaquin Northern San Joaquin Valley, along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road 37 Comment
  UCR201894  Holocarpha obconica George K. Helmkamp, E. A. Helmkamp 2008-10-9 14236 San Joaquin San Joaquin Valley, junction of Collier Road and CA-88, 1.1 miles north of the junction of CA-12 and CA-88, NE of Lodi 35 Comment
  UCR207837  Triphysaria versicolor subsp. faucibarbata George K. Helmkamp, E. A. Helmkamp 2009-3-26 14465 San Joaquin San Joaquin Valley, along Tully Road, 0.1 mile north of its junction with Kettleman Lane, 3.8 miles south of CA-88 in Lockeford 24 Comment
  UCR232199  Brassica rapa George K. Helmkamp, E. A. Helmkamp 2011-3-12 17070 San Joaquin Upper San Joaquin Valley, between Lodi and Galt, Forest Lake Road just west of CA-99 27 Comment
  UCR233466  Layia munzii George K. Helmkamp, E. A. Helmkamp 2010-4-7 15836 San Joaquin Northeast San Joaquin Valley, along CA-88, 1.1 miles southwest of the Amador County line, 6 miles NE (33 deg. ) of Clements 79 Comment
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May 24 2020
  UCR238403  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2012-4-7 18717 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
  UCR238415  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-4-7 18715 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
  UCR253462  Lupinus nanus George K. Helmkamp 2014-3-18 22590 San Joaquin San Joaquin Valley, along Collier Road, 1.1 mile east of Tully Road, 10.4 mi. ESE (103 deg. ) of Galt 40 Comment
  UCR253639  Brassica rapa George K. Helmkamp 2014-3-18 22582 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-BC114797  Cyperus involucratus G. Helmkamp; E. A. Helmkamp 2000-9-2 5968 San Luis Obispo Irish Hills: Profumo Canyon, 2.2 mi W of Los Osos Valley Rd.. 137 Comment
  CLARK-A1045-1330  Prunus fasciculata var. punctata George K. Helmkamp 1978-4-22 San Luis Obispo Morro Bay Baywood Park, sandy slope; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1355  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-A1045-1358  Orthocarpus densiflorus var. obispoensis George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay grassy field beside Turri Road, 3 miles east of Morro Bay; Morro Bay S 7.5'Q 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
  IRVC29232  Pteridium aquilinum G. K. Helmkamp, E. A. Helmkamp 2004-10-8 8857 San Luis Obispo Santa Lucia Wilderness area, 0.9 mi E of Lopez Lake entrance then 3.3 mi N along Upper Lopez Cyn Rd. Outer South Coast Ranges 166 Comment
  RSA0026052  Mirabilis jalapa George K. Helmkamp 2003-10-8 8203 San Luis Obispo Central Coast: base of Nipomo Mesa 0.25 miles SW of Halcyon Rd along an unnamed road near the railroad crossing. 15 Comment
  RSA613718  Orthocarpus purpurascens George K. Helmkamp, E. A. Helmkamp 1998-4-8 3217 San Luis Obispo Elkhorn Grade Rd, 13.7 mi. NW of jct with CA hwy 33 (roughly WNW of Maricopa). 579 Comment
  RSA613934  Lomatium vaginatum George K. Helmkamp, E. Helmkamp 1998-4-8 3210 San Luis Obispo Elkhorn Grade Rd, 6.3 mi. NW of jct with CA hwy 33 (roughly W of Maricopa). 549 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
  RSA709061  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2005-4-17 9366 San Luis Obispo Central Coast: Corbett canyon, 2.3 miles N of Hwy CA-227 in Arroyo Grande. 81 Comment
  RSA715276  Ranunculus George K. Helmkamp 2004-6-9 8614 San Luis Obispo Central Coast: Mesa Dunes mobile home park along Mesa view Drive (hwy CA-1), 0..3 mi S of Halcyon Rd. 76 Comment
  SD130289  Sidalcea malviflora George Helmkamp 1990-4-19 San Luis Obispo West Cuesta Ridge, 3 mi. NW of US 101, N of San Luis Obispo 671 Comment
  SD148062  Nuttallanthus texanus G. K. Helmkamp, E. A. Helmkamp 2001-5-2 6613 San Luis Obispo La Panza Range: CA-58, 4.5 mi E of Santa Margarite, roadside 334 Comment
  SD148137  Phacelia ciliata G. K. Helmkamp, E. A. Helmkamp 2001-5-2 6637 San Luis Obispo La Panza Range: CA-58, 33 miles east of Santa Margarita near San Juan Creek 487 Comment
  SD167183  Brassica rapa G. K. Helmkamp, E. A. Helmkamp 2005-6-5 9534 San Luis Obispo San Simeon Creek, 0.1 mile east of Higthway 1. 9 Comment
  SD167197  Uropappus lindleyi G. K. Helmkamp, E. A. Helmkamp 2005-3-5 9024 San Luis Obispo Outer South Coast Ranges; Santa Lucia Wilderness north of Lopez Lake, Upper Lopez Canyon road, 5.5 miles north of junction with Lopez Road. 334 Comment
  SD178131  Deinandra corymbosa G. K. Helmkamp 2003-8-31 8096 San Luis Obispo Central Coast: Callender Road at US-1 south of Arroyo Crande. 29 Comment
  SD178190  Amsinckia spectabilis var. microcarpa G. K. Helmkamp 2004-3-10 8336 San Luis Obispo Central Coast: Nipomo Mesa, along Pomeroy Rd, 0.2 mi north of Willow Rd, northwest of Nipomo. 91 Comment
  SD186163  Chenopodium berlandieri G. K. Helmkamp 2003-7-29 8040 B San Luis Obispo 0.6 mile south of Nipomo Hill in Arroyo Grande area. 46 Comment
  SD186263  Camissoniopsis cheiranthifolia G. K. Helmkamp 2003-7-31 8064 San Luis Obispo West edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road. 14 Comment
  SD193299  Erodium botrys G. K. Helmkamp, E. A. Helmkamp 2005-4-17 9366 San Luis Obispo Corbett Canyon, 2.3 miles north of Highway CA 227 in Arroyo Grande. 81 Comment
  SD193318  Camissonia strigulosa G. K. Helmkamp, E. A. Helmkamp 2005-4-17 9365 San Luis Obispo Corbett Canyon, 2.3 miles north of Highway CA 227 in Arroyo Grande. 81 Comment
  SD227732  Carduus pycnocephalus G. K. Helmkamp, E. A. Helmkamp 1999-5-22 4903 San Luis Obispo Los Osos: N of the corner of Buckskin & Martingale streets. 60 Comment
  SD232808  Solanum douglasii G. Helmkamp 1996-5-25 1055 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
  SD233646  Juncus phaeocephalus var. phaeocephalus G. Helmkamp 1996-5-24 1036 San Luis Obispo State Park System north of Turri Road and 1.5 mi east of South Bay Blvd. 93 Comment
  SEINET1004398  Solanum douglasii George K. Helmkamp 2004-1 828 San Luis Obispo Central Coast: Nipomo Mesa, Willow Rd, 0.6 mi E of Hwy CA-1 125 Comment
  SEINET1004410  Convolvulaceae George K. Helmkamp 2004-1 8341 San Luis Obispo Central Coast: Nipomo Mesa, between Arroyo Grande and Nipomo, Willow Rd, 0.6 mi E of Hwy CA-1 91 Comment
  SEINET1909581  Encelia californica George K. Helmkamp 2004-1 8251 San Luis Obispo Central Coast: Riverside Road at the low end of Nipomo Mesa beside Division Road 46 Comment
  SEINET244329 Image available Brachypodium hybridum George K. Helmkamp 2002-4-21 7475 San Luis Obispo Central Coast; Santa Rosa Creek Rd., 6.9 mi E of Cambria. 183 Comment
  UCD127979  Sanicula crassicaulis G. Helmkamp 1997-3-8 1453 San Luis Obispo San Luis Obispo County: SE of Los Osos. Swift Ranch, starting around 2 miles south of Los Osos Valley Road on Clark Valley Road. 106 Comment
  UCD137539  Plectritis congesta subsp. brachystemon G. K. Helmkamp; E. A. Helmkamp 2000-4-20 5385 San Luis Obispo San Luis Obispo County: Central Coast Prefumo Cyn., 1.2 mi south of Los Osos Valley Rd. 183 Comment
  UCR100023  Lotus junceus George K. Helmkamp, E. Helmkamp 1990-11-21 - 2 -19 San Luis Obispo Bear Creek Ranch, 6 mi. SE of Los Osos on Clark Valley Rd. 396 Comment
  UCR101011  Lasthenia ferrisiae George K. Helmkamp, E. A. Helmkamp 1998-4-8 3246 San Luis Obispo Soda Lake Rd at Arrowbear Trail, vic. of California Valley, c. 5 mi. NW of Soda Lake 610 Comment
  UCR101019  Pholistoma membranaceum George K. Helmkamp, E. A. Helmkamp 1998-4-8 3221 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
  UCR103812  Poa secunda George K. Helmkamp, E. A. Helmkamp 1997-3-8 1423 San Luis Obispo Along Calif. Hwy 58 just west of Navajo Creek (W of Carrizo Plain). 549 Comment
  UCR104785  Gnaphalium californicum George K. Helmkamp 1997-3-8 1462 San Luis Obispo Central Coast 7.5' Q., SE of Los Osos. Swift Ranch, starting c. 2 mi. south of Los Osos Valley Rd on Clark Valley Rd. 107 Comment
  UCR115559  Trifolium subterraneum George K. Helmkamp, E. A. Helmkamp 2000-4-20 5415 San Luis Obispo Central Coast, Irish Hills, north of Avila Beach, See Canyon, 7.4 mi south of Los Osos Valley Road 213 Comment
  UCR115575  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2000-4-20 5405 San Luis Obispo Central Coast, Prefumo Cyn., 1.2 mi south of Los Osos Valley Rd. 183 Comment
  UCR115587  Monardella sinuata subsp. sinuata George K. Helmkamp, E. A. Helmkamp 2000-6-15 5676 San Luis Obispo Central Coast, between Los Osos and sand dunes west of the end of Howard St. 15 Comment
  UCR115780  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 2000-4-20 5383 San Luis Obispo Central Coast, Prefumo Cyn., 1.2 mi south of Los Osos Valley Rd. 183 Comment
  UCR115812  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2000-6-15 5689 San Luis Obispo Central Coast, between Los Osos and sand dunes west of the end of Howard St. 15 Comment
  UCR117396  Keckiella cordifolia George K. Helmkamp, E. A. Helmkamp 1995-6-20 95- 2 - San Luis Obispo Central Coast, Bear Creek Ranch, 6 miles SE of Los Osos on Clark Valley Road 400 Comment
  UCR118365  Pickeringia montana George K. Helmkamp, E. A. Helmkamp 1998-6-30 4228 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
  UCR118371  Calochortus clavatus var. clavatus George K. Helmkamp, E. A. Helmkamp 1998-7-1 4255 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon Road, 5.2 miles southwest of Los Osos Valley Road 244 Comment
  UCR118379  Centaurea iberica George K. Helmkamp, E. A. Helmkamp 1998-7-1 4244 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon Road, 5.2 miles southwest of Los Osos Valley Road 244 Comment
  UCR118790  Sanicula crassicaulis George K. Helmkamp 1997-3-8 1453 San Luis Obispo Central Coast 7.5' Q., SE of Los Osos. Swift Ranch, starting c. 2 mi. south of Los Osos Valley Rd on Clark Valley Rd. 107 Comment
  UCR119349  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2000-9-2 5976 San Luis Obispo Irish Hills, See Canyon (S portion), c. 1.8 mi north of San Luis Bay Drive (N of Avila Beach) 91 Comment
  UCR121777  Malacothrix californica George K. Helmkamp 2002-4-20 7451 San Luis Obispo Central Coast, Los Osos, 0.2 mile northwest of Monarch Lane 9 Comment
  UCR122136  Brachypodium distachyon George K. Helmkamp 2002-4-21 7475 San Luis Obispo Central Coast, Santa Rosa Creek Rd., 6.9 mi east of Cambria 183 Comment
  UCR122138  Lamarckia aurea George K. Helmkamp, E. A. Helmkamp 2000-4-21 5448 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122151  Stachys bullata George K. Helmkamp, E. A. Helmkamp 2000-4-21 5438 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122159  Phacelia distans George K. Helmkamp, E. A. Helmkamp 2000-4-22 5470 San Luis Obispo Central Coast, Los Osos, between the west end of Howard Ave. and Morro Bay sand dunes 15 Comment
  UCR122169  Cardionema ramosissimum George K. Helmkamp, E. A. Helmkamp 2000-4-22 5484 San Luis Obispo Central Coast, Los Osos, between the west end of Howard Ave. and Morro Bay sand dunes 15 Comment
  UCR122445  Oxalis pes-caprae George K. Helmkamp 2002-4-21 7503 San Luis Obispo Central Coast, Santa Rosa Creek Rd., 6.9 mi east of Cambria 183 Comment
  UCR122486  Chaenactis glabriuscula var. lanosa George K. Helmkamp, E. A. Helmkamp 2001-5-2 6621 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122488  Cryptantha intermedia George K. Helmkamp, E. A. Helmkamp 2001-5-2 6634 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122495  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2001-5-2 6600 San Luis Obispo South Coast Range, La Panza Range, Calf Canyon, CA Hwy 58, 4.5 mi east of Santa Margarita 335 Comment
  UCR122507  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2001-5-2 6618 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122637  Oxalis corniculata subsp. pilosa George K. Helmkamp, E. A. Helmkamp 1998-5-19 3873 San Luis Obispo Outer South Coast Range; Santa Lucia Range, southwest of Paso Robles along CA Hwy 46 at York Mountain Road 366 Comment
  UCR122777  Sisyrinchium bellum George K. Helmkamp, E. A. Helmkamp 1998-5-20 3886 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
  UCR123164  Lepidium draba George K. Helmkamp, E. A. Helmkamp 2002-4-16 7414 San Luis Obispo Central Coast, Park Ridge 0.5 mi east of Morro Bay near Turri Road 76 Comment
  UCR123176  Phacelia ramosissima var. latifolia George K. Helmkamp, E. A. Helmkamp 2002-4-19 7552 San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR123178  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2002-4-19 7418 San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR123677  Madia sativa George K. Helmkamp, Elizabeth Helmkamp 1999-11-10 5340 A San Luis Obispo Central Coast, Montana de Oro State Park 61 Comment
  UCR131916  Bromus diandrus George K. Helmkamp 2003-11-22 8222 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
  UCR131918  Oenothera wolfii George K. Helmkamp 2003-8-18 8092 San Luis Obispo Central Coast, S of Arroyo Grande; along Mesa View Dr., 0.4 mi south of the junction of Cienaga and Valley View Rd. 30 Comment
  UCR132027  Echinochloa colona George K. Helmkamp 2003-9-10 8137 San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132060  Rumex acetosella George K. Helmkamp 2003-7-31 8049 B San Luis Obispo Central Coast, west edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road 15 Comment
  UCR132554  Hemizonia corymbosa subsp. macrocephala George K. Helmkamp 2003-8-31 8096 San Luis Obispo Central Coast, Callender Road at US-1 south of Arroyo Grande 30 Comment
  UCR134385  Lotus scoparius var. scoparius George K. Helmkamp 2003-9-19 8155 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134396  Geranium carolinianum George K. Helmkamp, E. A. Helmkamp 2001-4-29 6590 San Luis Obispo Irish Hills, Clark Valley Rd., 4.2 miles south of Los Osos Valley Rd, E of Los Osos 274 Comment
  UCR134398  Arenaria douglasii George K. Helmkamp, E. A. Helmkamp 2001-4-29 6592 San Luis Obispo Irish Hills, Prefumo Cyn Rd., 2.8 miles west of Los Osos Valley Rd., SW of San Luis Obispo 91 Comment
  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
  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
  UCR134423  Scirpus microcarpus George K. Helmkamp 2003-9-19 8144 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134437  Spergula arvensis subsp. arvensis George K. Helmkamp 2003-8-16 8085 San Luis Obispo Central Coast, Nipomo Mesa at Willow Road, 0.5 mi east of Calif. Hwy 1, near Black Lake golf course 76 Comment
  UCR134445  Ambrosia psilostachya George K. Helmkamp 2003-9-26 8176 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 Comment
  UCR134450  Xanthium strumarium George K. Helmkamp 2003-9-26 8186 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 Comment
  UCR134688  Gnaphalium stramineum George K. Helmkamp 2003-9-19 8158 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134695  Hypochaeris radicata George K. Helmkamp 2003-9-10 8140 San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 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
  UCR140081  Claytonia perfoliata subsp. mexicana George K. Helmkamp 2004-3-13 8359 San Luis Obispo Central Coast, Nipomo Mesa, along Calif. Hwy 1 (Mesa View Dr.), 0.4 mi south of Halcyon Rd, south of Arroyo Grande 76 Comment
  UCR140089  Avena barbata George K. Helmkamp 2004-2-29 8319 San Luis Obispo Central Coast, Nipomo Mesa, Nipomo, Orchard Ave. 0.1 mi NW of Division St. 116 Comment
  UCR140094  Verbena lasiostachys var. scabrida George K. Helmkamp 2004-4-1 8418 San Luis Obispo Central Coast, Nipomo Mesa; Mesa Dunes Mobile Home Park along Mesa View Dr., 0.2 mi south of Halcyon Rd. 76 Comment
  UCR140111  Stellaria media George K. Helmkamp 2004-2-7 8260 San Luis Obispo Central Coast, SE of Oceano along Halcyon Rd., just east of Mesa View Dr. 76 Comment
  UCR140119  Ceanothus cuneatus subsp. fascicularis George K. Helmkamp 2004-2-11 8289 San Luis Obispo Central Coast, Nipomo Mesa, Pomeroy Rd, 1.1 mi N of Willow Rd. 130 Comment
  UCR140123  Chenopodium murale George K. Helmkamp 2004-2-6 8247 San Luis Obispo Central Coast, Oso Flaco Lake Road, 0.5 mi east of the lake 9 Comment
  UCR140137  Solanum xanti George K. Helmkamp 2004-2-11 8276 San Luis Obispo Central Coast, Nipomo Mesa, Pomeroy Rd, 0.2 mi north of Willow Rd. 130 Comment
  UCR140145  Sonchus oleraceus George K. Helmkamp 2004-2-7 8257 San Luis Obispo Central Coast, SE of Oceano along Halcyon Rd., just east of Mesa View Dr. 76 Comment
  UCR140150  Lupinus chamissonis George K. Helmkamp 2004-2-6 8244 San Luis Obispo Central Coast, north side of Oso Flaco Lake; base of sand dune called 'Little Coreopsis Hill 30 Comment
  UCR140372  Festuca myuros George K. Helmkamp 2004-3-19 8383 San Luis Obispo Central Coast, Arroyo Grande, along Traffic Way south of Grand Ave. at Arroyo Grande Creek 24 Comment
  UCR140397  Festuca myuros George K. Helmkamp 2004-3-21 8387 San Luis Obispo Central Coast, Mesa Dunes Mobile Home Park along Mesa View Dr., 0.2 mi south of the junction of Halcyon Rd., SE of Oceano 61 Comment
  UCR140410  Arctostaphylos rudis George K. Helmkamp 2004-2-19 8304 San Luis Obispo Central Coast, NW of Nipomo, Pomeroy Rd, 0.2 mi N of Willow Rd. 91 Comment
  UCR14567  Cryptantha corollata George K. Helmkamp 1974-4-28 s.n. San Luis Obispo Central Coast, north of 'Morro Bay' on Cuesta Grade [presumably meaning N of San Luis Obispo] 305 Comment
  UCR146656  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2004-10-1 8833 San Luis Obispo Central Coast; Outer South Coast Range, 3.4 miles east of Lopez Lake along Hi Mountain Road and beside Arroyo Grande Creek 171 Comment
  UCR146967  Baccharis pilularis George K. Helmkamp, E. A. Helmkamp 2004-10-8 8852 San Luis Obispo Outer South Coast Range, NE edge of Santa Lucia Wilderness Area; along Hi Mountain Road and beside Salt Creek, 8.0 mi. NE of Lopez Lake entrance 399 Comment
  UCR147033  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2004-10-8 8838 San Luis Obispo Central Coast, Biddle Regional Park, 7 mi NE of Arroyo Grande along Lopez Drive and Arroyo Grande Creek 136 Comment
  UCR147227  Echinochloa crus-galli George K. Helmkamp, E. A. Helmkamp 2004-8-15 8787 San Luis Obispo Central Coast, Nipomo Mesa. Mesa Dunes Mobile Home Park along Mesa View Dr., 0.2 mi S. of jct. of Halcyon Rd., SE of Oceano 76 Comment
  UCR147233  Haplopappus menziesii George K. Helmkamp, E. A. Helmkamp 2004-8-26 8790 San Luis Obispo Central Coast, Riverside Rd at the low end of Nipomo Mesa, 0.2 mi east of jct with Division Rd. 46 Comment
  UCR158180  Camissonia cheiranthifolia subsp. suffruticosa George K. Helmkamp 2004-6-15 8649 San Luis Obispo Central Coast, Sand dunes beside the Pacific Ocean WNW of Oso Flaco Lake 6 Comment
  UCR158430  Amsinckia tessellata George K. Helmkamp, E. A. Helmkamp 2005-4-22 9411 San Luis Obispo Inner South Coast Ranges, Carrizo Highway at Mile-32, Calif. Hwy 58, east of Santa Margarita, beside Windmill Creek 509 Comment
  UCR159227  Delphinium parryi subsp. parryi George K. Helmkamp, E. A. Helmkamp 2005-4-22 9393 San Luis Obispo Inner South Coast Ranges, Carrizo Hwy at Mile-19 (Calif. Hwy 58, east of Santa Margarita near Wilson Corner) 470 Comment
  UCR159306  Layia platyglossa George K. Helmkamp, E. A. Helmkamp 2005-4-22 9390 San Luis Obispo Inner South Coast Ranges, Carrizo Hwy at Mile-19 (Calif. Hwy 58, east of Santa Margarita near Wilson Corner) 470 Comment
  UCR159308  Lotus wrangelianus George K. Helmkamp, E. A. Helmkamp 2005-4-22 9394 San Luis Obispo Inner South Coast Ranges, Carrizo Hwy at Mile-19 (Calif. Hwy 58, east of Santa Margarita near Wilson Corner) 470 Comment
  UCR159994  Senecio flaccidus var. douglasii George K. Helmkamp, E. A. Helmkamp 2005-6-12 9665 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
  UCR160130  Monardella breweri subsp. lanceolata George K. Helmkamp, E. A. Helmkamp 2005-6-9 9579 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
  UCR160144  Galium angustifolium subsp. angustifolium George K. Helmkamp, E. A. Helmkamp 2005-6-9 9571 San Luis Obispo South Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 7.8 miles northeast of Huasna Townsite Road 338 Comment
  UCR160157  Castilleja affinis subsp. affinis George K. Helmkamp, E. A. Helmkamp 2005-6-9 9568 San Luis Obispo South Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 5.4 mi northeast of Huasna Township Road. 256 Comment
  UCR160288  Lupinus chamissonis George K. Helmkamp 2004-4-30 8553 San Luis Obispo Central Coast, about 1.1 mi (airline) SW of Arroyo Grande Ave at 23rd St in Oceano 15 Comment
  UCR160390  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2005-6-9 9603 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
  UCR160564  Ranunculus californicus George K. Helmkamp, E. A. Helmkamp 2005-6-7 9543 San Luis Obispo Outer South Coast Ranges, along Huasna Road, 1.3 mile west of Huasna Townsite Road 305 Comment
  UCR160576  Penstemon centranthifolius George K. Helmkamp, E. A. Helmkamp 2005-6-12 9650 San Luis Obispo Central Coast Range, along Calif. Hwy 58 (Carrizo Hwy), 22.2 miles east of Santa Margarita; near Camatta Creek 552 Comment
  UCR160578  Erigeron foliosus var. foliosus George K. Helmkamp, E. A. Helmkamp 2005-6-9 9589 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
  UCR160967  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2005-6-12 9657 San Luis Obispo South Central Coast Range, Along Calif. Highway 229 (road to Creston), 5.5 mi N of Calif. Highway 58; beside West Branch of Huerhuero Creek 363 Comment
  UCR161219  Lupinus truncatus George K. Helmkamp, E. A. Helmkamp 2005-3-5 9035 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness N of Lopez Lake, Upper Lopez Canyon Road, 5.5 mi N of jct with Lopez Road 335 Comment
  UCR161223  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2005-3-5 9027 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness N of Lopez Lake, Upper Lopez Canyon Road, 5.5 mi N of jct with Lopez Road 335 Comment
  UCR161286  Cardamine californica var. cuneata George K. Helmkamp, E. A. Helmkamp 2005-3-8 9043 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
  UCR161288  Centaurea iberica George K. Helmkamp, E. A. Helmkamp 2005-3-8 9075 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon Road, 4.6 mi west of Los Osos Valley Road 316 Comment
  UCR161295  Cardamine oligosperma George K. Helmkamp, E. A. Helmkamp 2005-3-9 9094 San Luis Obispo Outer Central Coast Hills, Irish Hills; See Canyon, 1.0 mi N of San Luis Bay Drive 43