Search Results — 2000 specimen records retrieved (1965 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC263198  Eriogonum marifolium var. marifolium G. Helmkamp; E. Helmkamp 1997-9-11 2390 Alpine 0.2 mi NW of Sonora Pass along highway CA-108 2910 Comment
  CAS-BOT-BC434228  Perideridia lemmonii George K. Helmkamp; Elizabeth Helmkamp 2013-8-2 22091 Alpine Northern Sierra Nevada Mountains: along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam. 2486 Comment
  CAS-BOT-BC520329  Delphinium glaucum George K. Helmkamp; Amy Barnes 2012-8-12 19598 Alpine Northern Sierra Nevada Mountains: Woods Lake Road, 0.8 mi SE of jct with CA-88 and beside Woods Creek 2285 Comment
  CLARK-A1045-1109  Poa palustris George K. Helmkamp 1977-9-1 VI Alpine Sierra Nevada 2 miles east of Luther Pass, corner of US Highway 88 and US Highway 89; roadside; 7300ft; Freel Peak 7.5'Q Comment
  HSC104166  Cryptantha echinella G. K. Helmkamp, E. A. Helmkamp 2012-8-24 19693 Alpine Northern Sierra Nevada Mountains; along CA-88, Carson Pass Hwy., at the west side of Carson Spur, 1.7 air mi. W of Kirkwood 2436 Comment
  RSA0035524  Penstemon rydbergii var. oreocharis George K. Helmkamp, Belinda Pesheck 2013-7-14 21043 Alpine off Blue Lakes Road, 9.4 miles south of CA-88, between a private dirt road and Charity Valley Creek 2409 Comment
  RSA0035708  Epilobium brachycarpum George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-14 22177 Alpine along CA-89, 0.6 mile south of Markleeville 1691 Comment
  RSA0035901  Aster occidentalis var. occidentalis George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-2 22096 Alpine along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 Comment
  RSA0037293  Arabis George K. Helmkamp, Belinda Pesheck 2013-7-14 21038 Alpine off Blue Lakes Road, 9.4 miles south of CA-88, between a private dirt road and Charity Valley Creek 2409 Comment
  RSA780938  Eriogonum umbellatum var. polyanthum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16546 Alpine Red Vista Road, 0.2 mile west of its junction with CA-88; south side of Red Lake 2412 Comment
  RSA794862  Saxifraga bryophora George K. Helmkamp, E. A. Helmkamp 2011-8-19 18120 Alpine Tamarack Road, 0.1 mile east of its junction with Blue Lakes Road 2485 Comment
  SD148124  Mentzelia montana G. K. Helmkamp, E. A. Helmkamp 2001-7-6 6840 Alpine Sierra Nevada Mountains; Ca 89, 7.1 miles west of U. S. 395. 2470 Comment
  SD197883  Eriogonum spergulinum var. reddingianum G. K. Helmkamp, E. A. Helmkamp 2008-8-8 13974 Alpine Along CA-89 at Grass Lake, 0.9 mile west of Luther Pass. 2353 Comment
  SD225048  Gayophytum eriospermum G. Helmkamp, E. Helmkamp 1997-9-9 2297 Alpine Junction of highways CA-89 and CA-4 south of Markleeville. 1798 Comment
  SD236225  Tetradymia canescens G. 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 (Woodfords 7.5'Q) 1712 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
  SD236413  Castilleja applegatei subsp. pinetorum G. K. Helmkamp, E. A. Helmkamp 2008-7-22 13876 Alpine Eastern Sierra Nevada Mountains: along CA-88/89 at the east end of Hope valley at the West Fork of the Carson River 2104 Comment
  SD239882  Montia linearis G. K. Helmkamp, E. A. Helmkamp 2011-8-19 18109 Alpine Northern Sierra Nevada Mountains: Tamarack Road, 1.2 miles east of its junction with Blue Lakes Road (Pacific Valley 7.5'Q) 2451 Comment
  SD243184  Eriogonum spergulinum var. reddingianum George K. Helmkamp, E. A. Helmkamp 2011-8-19 18098 Alpine Northern Sierra Nevada Mountains: Blue Lakes Road, 6.6 miles south of its junction with CA-88. 2296 Comment
  SD247422  Lupinus lepidus var. sellulus George Helmkamp, Elizabeth Helmkamp 2013-8-14 22248 Alpine Northern Sierra Nevada Mountains: along CA-4, 12.4 miles southwest of the CA-89 junction and north of Kinney Reservoir (Ebbetts Pass 7.5'Q) 2540 Comment
  SD248422  Lupinus argenteus var. palmeri George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22194 Alpine Northern Sierra Nevada Mountains: along CA-89, 1.3 miles southwest of Monitor Pass. 2503 Comment
  SEINET10792047  Stipa thurberiana George K. Helmkamp, E. A. Helmkamp 2013-8-14 Helmkamp 22197 Alpine Northern Sierra Nevada Mountains; along CA-89, 1.9 mile E of Monitor Pass, then 0.1 mile SW on an unnamed dirt road (Topaz Lake 7.5' Quad.). 2846 Comment
  SEINET11261455  Collomia linearis George Helmkamp, Elizabeth Helmkamp 2013-8-14 22205 Alpine Northern Sierra Nevada Mountains: Ebbets Pass along CA-4 about 4.8 miles west of its junction with CA-89.; 0 1924 Comment
  SEINET13276754 Image available Polygonum aviculare George K. Helmkamp, Amy Barnes 2014-1 23158 Alpine Northern Sierra Nevada Mountains: along CA-89, 0.6 mile south of Luther Pass 2286 Comment
  SEINET1908444  Agrostis idahoensis G. K. Helmkamp, E. A. Helmkamp 2008-1 13852 Alpine Eastern Sierra Nevada Mountains: Blue Lake Road just southeast of its junction with CA-88. 2179 Comment
  SEINET1908501  Chamerion angustifolium G. K. Helmkamp, E. A. Helmkamp 2008-1 13840 Alpine Northern Sierra Nevada Mountains: 0.1 mile south of CA-88 on a dead-end spur south of Carson Pass. 2594 Comment
  SEINET269100  Elymus X hansenii G. Helmkamp 1994-5-23 98 -7 Alpine At the junction of highways US-4 and US-89. Along the east fork of the Carson River. Aspen cottonwood area. 1768 Comment
  SEINET269110 Image available Arctostaphylos patula G. Helmkamp 1994-5-23 96 -1 Alpine Bear Valley community along highway US-4. 2134 Comment
  SEINET3259911 Image available Sambucus racemosa var. microbotrys George K. Helmkamp, E. A. Helmkamp 2008-8-8 14010 Alpine Northern Sierra Nevada Mountains; along Blue Lake Road, 9.2 miles south of its junction with CA-88. 2512 Comment
  SEINET3260240 Image available Pinus jeffreyi George K. Helmkamp, E. A. Helmkamp 2008-9-22 14151 Alpine Northern Sierra Nevada Mountains; along CA-89 at Woodfords, 0.1 mile south of its junction with CA-88. 1726 Comment
  SEINET3282810 Image available Elymus cinereus George K. Helmkamp, E. A. Helmkamp 2009-8-4 15367 Alpine Sierra Nevada Mountains; along CA-4 at milepost 30, 1.6 miles south of its junction with CA-89; along East Fork Carson River. 1787 Comment
  SEINET4559938  Epilobium angustifolium subsp. circumvagum George K. Helmkamp, Elizabeth Helmkamp 2013-1 22238 Alpine Northern Sierra Nevada Mountains; Silver Creek, along CA-4,5.0 miles west of its junction with CA-89 1926 Comment
  SEINET5586214  Ambrosia acanthicarpa George K. Helmkamp, Elizabeth Helmkamp 2013-1 22169 Alpine Northern Sierra Nevada Mountains: along CA-89, 0.6 mile south of Markleeville. 1691 Comment
  SEINET9261031  Muhlenbergia asperifolia George K. Helmkamp, Amy Barnes 2014-1 23077 Alpine Eastern Sierra Nevada Mountains: Paynesville, junction of Chambers Lane and Diamond Valley Road along West Fork Carson River (Woodfords 7.5 Q 1593 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
  UC2047235  Symphyotrichum spathulatum George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22204 Alpine Northern Sierra Nevada Mountains: Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89. Ebbets Pass 7.5' Quad. Comment
  UCD103647  Gayophytum diffusum subsp. parviflorum G. K. Helmkamp; E. A. Helmkamp 2006-9-12 11386 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
  UCD116659  Sidalcea glaucescens G. K. Helmkamp 2007-7-7 12510 Alpine Northern Sierra Nevada Mountains, Blue Lake Road, 12 miles south of its junction with CA-88. 2549 Comment
  UCD118203  Navarretia breweri G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12706 Alpine Northern Sierra Nevada Mountains: Woods Lake Road 0.1 mile south of its junction with CA-88. 2500 Comment
  UCD125218  Monardella odoratissima subsp. pallida G. K. Helmkamp; E. A. Helmkamp 2007-7-7 12504 Alpine Northern Sierra Nevada Mountains: Blue Lake Road, 12.0 miles south of its junction with CA-88. 2549 Comment
  UCD129191  Artemisia arbuscula subsp. arbuscula G. K. Helmkamp; E. A. Helmkamp 2007-8-4 12690 Alpine Northern Sierra Nevada Mountains. Woods Lake Road 0.8 mile south of its junction with CA-88; beside the Woods Creek crossing. 2494 Comment
  UCD141529  Juncus ensifolius G. K. Helmkamp; E. A. Helmkamp 2006-9-12 11404 Alpine Northern Sierra Nevada Mountains: west end of Caples Lake at a dam; alongside Hwy CA-88. 2335 Comment
  UCD96802  Thalictrum fendleri var. fendleri G. K. Helmkamp; E. A. Helmkamp 2006-8-3 11126 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
  UCR103543  Lupinus lepidus var. lobbii George K. Helmkamp, E. A. Helmkamp 1997-9-11 2403 Alpine Sierra Nevada Mountains, 0.2 mi northwest of Sonora Pass along CA Hwy 108 2912 Comment
  UCR122307  Ageratina occidentalis George K. Helmkamp, E. A. Helmkamp 1997-9-9 2310 Alpine Sierra Nevada Mountains, Leviathan Lookout Road at the S and W sides of Leviathan Peak, NW of Monitor Pass 2683 Comment
  UCR176222  Phacelia hastata var. compacta George K. Helmkamp, E. A. Helmkamp 2006-8-3 11108 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR176500  Eriogonum nudum George K. Helmkamp, E. A. Helmkamp 2006-8-3 11122 Alpine Northern Sierra Nevada Mountains, Wood's Lake Road, 0.3 mile north of the parking area for Wood's Lake 2509 Comment
  UCR178634  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2006-9-12 11391 Alpine Northern Sierra Nevada Mountains, along Calif. Hwy 89, 1.5 miles east of the El Dorado County line, general vicinity of Luther Pass 2186 Comment
  UCR178635  Artemisia tridentata subsp. vaseyana George K. Helmkamp, E. A. Helmkamp 2006-9-12 11392 Alpine Northern Sierra Nevada Mountains, along Calif. Hwy 88 at the crossing over the West Fork of the Carson River 2183 Comment
  UCR178746  Artemisia arbuscula subsp. arbuscula George K. Helmkamp, E. A. Helmkamp 2006-8-30 11302 Alpine Northern Sierra Nevada Mountains, Woods Lake, south of Calif. Hwy 88 and generally SE of Caples Lake 2521 Comment
  UCR178748  Silene douglasii George K. Helmkamp, E. A. Helmkamp 2006-8-30 11303 Alpine Northern Sierra Nevada Mountains, Woods Lake, south of Calif. Hwy 88 and generally SE of Caples Lake 2521 Comment
  UCR188514  Spergularia rubra George K. Helmkamp, E. A. Helmkamp 2007-7-17 12542 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
  UCR188515  Veratrum californicum var. californicum George K. Helmkamp, E. A. Helmkamp 2007-7-17 12541 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
  UCR189050  Sidalcea glaucescens George K. Helmkamp 2007-7-7 12510 Alpine Northern Sierra Nevada Mountains, Blue Lake Road, 12.0 miles south of its junction with CA-88 2549 Comment
  UCR189190  Calyptridium monospermum George K. Helmkamp 2007-7-7 12496 Alpine Northern Sierra Nevada Mountains, Blue Lakes [Forestdale] Road, 0.2 mile south of its junction with CA-88 2378 Comment
  UCR189444  Epilobium angustifolium subsp. circumvagum George K. Helmkamp, E. A. Helmkamp 2007-8-4 12689 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
  UCR190166  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, E. A. Helmkamp 2007-7-17 12546 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
  UCR190168  Epilobium angustifolium subsp. circumvagum George K. Helmkamp, E. A. Helmkamp 2007-7-17 12548 Alpine Northern Sierra Nevada Mountains, Blue Lake Road about nine miles south of its junction with CA-88 2511 Comment
  UCR196813  Phacelia ramosissima var. eremophila George K. Helmkamp, E. A. Helmkamp 2008-7-16 13806 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR196949  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2008-7-16 13822 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR197019  Plagiobothrys hispidulus George K. Helmkamp, E. A. Helmkamp 2008-7-16 13827 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2457 Comment
  UCR202566  Pinus jeffreyi George K. Helmkamp, E. A. Helmkamp 2008-9-22 14151 Alpine Northern Sierra Nevada Mountains, along CA-89 at Woodfords, 0.1 mile south of its junction with CA-88 1726 Comment
  UCR202568  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2008-9-22 14156 Alpine Northern Sierra Nevada Mountains, along CA-89. 0.1 mile north of Markleeville 1686 Comment
  UCR202682  Aster ascendens George K. Helmkamp, E. A. Helmkamp 2008-9-22 14150 Alpine Northern Sierra Nevada Mountains, Carson River Road running about parallel to CA-88, 2.2 miles east of its western junction with CA-88 1619 Comment
  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
  UCR206597  Sidalcea glaucescens George K. Helmkamp, Ann Kerchner 2009-7-25 15296 Alpine Sierra Nevada Mountains, Blue Lakes Road, 8.5 miles south of its junction with CA-88 2491 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
  UCR210041  Osmorhiza occidentalis George K. Helmkamp, E. A. Helmkamp 2009-8-4 15375 Alpine Sierra Nevada Mountains, along CA-4 at Mile-21, 21.6 miles southwest of its junction with CA-89 2402 Comment
  UCR218959  Collinsia torreyi var. wrightii George K. Helmkamp, E. A. Helmkamp 2010-7-13 16533 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2492 Comment
  UCR219174  Penstemon newberryi var. newberryi George K. Helmkamp, E. A. Helmkamp 2010-7-13 16553 Alpine Northern Sierra Nevada Mountains, Sno-Park area at Carson Pass; northeast side of CA-88 across from the trailside parking area 2613 Comment
  UCR219274  Myosotis laxa George K. Helmkamp, E. A. Helmkamp 2010-7-13 16541 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.1 mile south of its junction with CA-88 2492 Comment
  UCR229439  Muhlenbergia filiformis George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18088 Alpine Northern Sierra Nevada Mountains, unnamed dirt road on the east side of CA-4 and about 0.1 mile northeast of the Calaveras Co. line, near Bear Valley 2165 Comment
  UCR234561  Platanthera dilatata var. leucostachys George K. Helmkamp, E. A. Helmkamp 2011-8-19 18149 Alpine Northern Sierra Nevada Mountains, Blue Lakes Road, 2.6 miles north of its junction with Tamarack Road 2436 Comment
  UCR234569  Castilleja pilosa George K. Helmkamp, E. A. Helmkamp 2011-8-19 18128 Alpine Northern Sierra Nevada Mountains, northeast side of Lower Blue Lake, above campground 2500 Comment
  UCR234590  Arenaria kingii var. glabrescens George K. Helmkamp, E. A. Helmkamp 2011-8-19 18126 Alpine Northern Sierra Nevada Mountains, Tamarack Road, 0.1 mile east of its junction with Blue Lakes Road 2485 Comment
  UCR245607  Plantago major George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22219 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR245719  Geum macrophyllum George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22203 Alpine Northern Sierra Nevada Mountains, Ebbets Pass, along CA-4, 4.8 miles west of its junction with CA-89 1924 Comment
  UCR247253  Castilleja pruinosa George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22181 Alpine Northern Sierra Nevada Mountains, along CA-89, 0.1 mile east of its junction with CA-4, Monitor Creek 1747 Comment
  UCR247260  Prunus emarginata George K. Helmkamp, Elizabeth Helmkamp 2013-8-14 22191 Alpine Northern Sierra Nevada Mountains, along CA-89, 1.3 miles southwest of Monitor Pass 2503 Comment
  UCR248528  Lupinus lepidus George K. Helmkamp, Belinda Pesheck 2013-7-14 21042 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
  UCR248683  Carex pellita George K. Helmkamp, Belinda Pesheck 2013-7-14 21060 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
  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
  UCR248703  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, Belinda Pesheck 2013-7-14 21052 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
  UCR252800  Gilia leptalea subsp. bicolor George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22092 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 Comment
  UCR252956  Arabis platysperma var. platysperma George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22094 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, 1.6 miles east of the Caples Lake dam 2486 Comment
  UCR257680  Cryptantha echinella George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19693 Alpine Northern Sierra Nevada Mountains, along CA-88, Carson Pass Hwy, at the west side of Carson Spur, 1.7 air mi west (278 deg. ) of Kirkwood 2436 Comment
  UCR257753  Phacelia hydrophylloides George K. Helmkamp, Amy Barnes 2012-8-12 19592 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257760  Muhlenbergia richardsonis George K. Helmkamp, Elizabeth Helmkamp 2012-8-24 19697 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
  UCR257787  Artemisia ludoviciana subsp. incompta George K. Helmkamp, Amy Barnes 2012-8-12 19628 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
  UCR257799  Epilobium brachycarpum George K. Helmkamp, Amy Barnes 2012-8-12 19621 Alpine Northern Sierra Nevada Mountains, along CA-89/Carson Pass Hwy in West Carson Canyon, 1.4 miles east of the junction with CA-88 2034 Comment
  UCR257856  Thalictrum fendleri var. fendleri George K. Helmkamp, Amy Barnes 2012-8-12 19610 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR257858  Aster foliaceus var. parryi George K. Helmkamp, Amy Barnes 2012-8-12 19640 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
  UCR257911  Aster integrifolius George K. Helmkamp, Amy Barnes 2012-8-12 19602 Alpine Northern Sierra Nevada Mountains, Woods Lake Road, 0.8 mile SE of its junction with CA-88 and beside Woods Creek 2286 Comment
  UCR258403  Eriogonum wrightii var. subscaposum George K. Helmkamp, Amy Barnes 2014-8-27 23032 Alpine Northern Sierra Nevada Mountains, Woodfords, at the junction of CA-88 and CA-89 1723 Comment
  UCR87688  Myosotis scorpioides George K. Helmkamp, E. A. Helmkamp 1995-6-23 95 7 1 Alpine Sierra Nevada Mtns, Bear Valley along Calif. Hwy 4 2134 Comment
  UCR88323  Phleum alpinum George K. Helmkamp 1995-9-23 3- 30 Alpine Sierra Nevada Mtns, west side of Sonora Pass, just beyond the Mono County line 2927 Comment
  CAS-BOT-BC342569  Madia G. 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 mile east of the junction of Tiger Creek Road with CA-88 936 Comment
  CAS-BOT-BC434948  Dysphania botrys George K. Helmkamp; Elizabeth Helmkamp 2013-9-7 22283 Amador Northern Sierra Nevada Mountains: on the south side of CA-88/Carson Pass Hwy, c. 0.3 mile west of the junction with Bear River Reservoir Road. 1934 Comment
  CAS-BOT-BC520347  Lessingia leptoclada George K. Helmkamp; E. A. Helmkamp 2012-10-5 19985 Amador Northern Sierra Nevada Mountains Foothills: Fiddletown Rd, 1.3 mi W of jct with Shake Ridge Rd 940 Comment
  CAS-BOT-BC530096  Viola lobata subsp. lobata G. K. Helmkamp; E. A. Helmkamp 2008-6-23 13718 Amador Northern Sierra Nevada Mountains: Dufrene Road, 0.1 miles south of its junction with CA-88, between Mormon Emigrant Trail and Hamms Station 2076 Comment
  CAS-BOT-BC62722  Quercus chrysolepis G. K. Helmkamp; E. A. Helmkamp 2008-5-4 13384 Amador Sierra Nevada Mountains Foothills: along Tiger Creek Road, 2.8 miles east of CA-88; at the entrance to 744 Comment
  CDA36253  Galium parisiense G. K. Helmkamp, E. A. Helmkamp 2007-4-23 11801 Amador Foothills, Northern Sierra Nevada Mountains; Junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione. Comment
  CDA36371  Trifolium hirtum G. K. Helmkamp, E. A. Helmkamp 2007-4-23 11600 Amador Foothills, Northern Sierra Nevada Mountains; Along CA Hwy 124, 0.25 mile from its junction with Hwy 16. Comment
  CHSC110178  Clarkia biloba subsp. brandegeeae G. K. Helmkamp; E. A. Helmkamp 2010-6-23 16334 Amador Sierra Nevada Mountains Foothills: Sutter Creek Road, 7.2 miles northeast of its junction with old CA-49 in Sutter Creek village. Alt.: 473m/1550ft. 473 Comment
  CHSC98221  Trifolium glomeratum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-6 10302 Amador Northern Sierra Nevada foothills: along Hwy. CA-49, 0.3 miles south of Drytown. 226 Comment
  JEPS119419  Holocarpha virgata subsp. virgata G. K. Helmkamp, E. A. Helmkamp 2009-8-24 15523 Amador Sierra Nevada Mountains Foothills, along CA-49 at the junction with Fiddletown Road in the city of Plymouth Comment
  RSA0012106  Mimulus kelloggii George K. Helmkamp, E. A. Helmkamp 2011-6-7 17471 Amador Sutter Creek Road, 3.4 miles west of Volcano 491 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
  RSA0035868  Gayophytum ramosissimum George K. Helmkamp, Elizabeth A. Helmkamp 2013-9-7 22280 Amador Northern Sierra Nevada Mountains: on the south side of CA-88/Carson Pass Hwy, c. 0.3 mile west of the junction with Bear River Reservoir Road. 1934 Comment
  RSA0053696  Gilia capitata subsp. mediomontana G. K. Helmkamp, E. A. Helmkamp 2012-6-26 19272 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
  RSA0081171  Typha angustifolia George K. Helmkamp, E. A. Helmkamp 2006-10-6 11469 Amador Along Calif. Hwy 49 beside Big Indian Creek; 2.2 miles south of El Dorado County line. 271 Comment
  RSA0107417  Navarretia divaricata subsp. vividior George K. Helmkamp, Mary Alice Barnes 2013-5-13 20598 Amador Sierra Nevada Mountains: Shake Ridge Road, 16.7 miles northeast of its junction with E-16 via Fiddletown Rd. 983 Comment
  RSA785404  Clarkia biloba subsp. brandegeeae George K. Helmkamp, E. A. Helmkamp 2010-6-23 16334 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
  SBBG129259  Cryptantha torreyana G. K. Helmkamp, E. A. Helmkamp 2013-7-10 21004 Amador Plasse Rd toward Silver Lake, 0.3 mile south of CA-88/Carson Pass Highway 2276 Comment
  SD197635  Poa bulbosa G. K. Helmkamp, E. A. Helmkamp 2008-5-4 13386 Amador Sierra Nevada Mountains Foothills: along Tiger Creek Road, 2.8 miles east of CA-88; at the entrance of Tiger Creek Reservoir. 744 Comment
  SD197732  Scleranthus annuus G. K. Helmkamp, E. A. Helmkamp 2007-4-23 11813 Amador Northern Sierra Nevada Mountains; junction of Tonzi Road and CA-124, ca. 7.0 mile north of Ione. 228 Comment
  SD234987  Eriogonum incanum G. K. Helmkamp 2007-6-29 12418 Amador Northern Sierra Nevada Mountains: Shot Rock Vista picnic area along CA-88, 0.9 miles east of its junction with Mormon Emigrant Trail (Bear River 7.5' Q) 2329 Comment
  SD239520  Briza minor G. K. Helmkamp, E. A. Helmkamp 2011-5-19 17295 Amador Lower Sierra Nevada Mountains Foothills: NW of Pardee Reservoir, 0.1 mil east of Rock Creek Road on a gravel spur leading to houses, 4.65 mi SW (220a^z) of Jackson (Jackson 7.5'Q) 280 Comment
  SD239526  Deschampsia elongata G. K. Helmkamp, E. A. Helmkamp 2012-7-14 19376 Amador Northern Sierra Nevada Mountains: Shot Rock Vista Rest Stop along CA-88 (Carson Pass Hwy), 1 mile west of the junction with Mormon Emigrant Trail (Trajedy Spring 7.5'Q0 2329 Comment
  SD239643  Hackelia floribunda George K. Helmkamp, E. A. Helmkamp 2012-7-14 19394 Amador Northern Sierra Nevada Mountains: Edge of Martin Meadow along CA-88 (Carson Pass Hwy). 2.2 miles north of Silver Lake (Caples Lake 7.5'Q) 2317 Comment
  SD239733  Acmispon glaber var. glaber George K. Helmkamp, E. A. Helmkamp 2011-5-19 17292 Amador Northern Sierra Nevada Mountains Foothills: NW of Pardee Reservoir, 0.1 mile east of Rock Creek Road on a gravel spur leading to houses, 4.65 mi SW (220a^z) of Jackson (Jackson 7.5'Q) 280 Comment
  SD239825  Clarkia rhomboidea George K. Helmkamp, E. A. Helmkamp 2011-8-6 17955 Amador Northern Sierra Nevada Mountains: Ellis Road, 2.1 miles south of its junction with CA-88 (Peddler Hill 7.5'Q) 1794 Comment
  SD241057  Phacelia hastata var. hastata George K. Helmkamp, E. A. Helmkamp 2012-7-14 19411 Amador Northern Sierra Nevada Mountains: between CA-88 and the El Dorado County line, 0.9 mile north of Silver Lake along CA-88 (Caples Lake 7.5'Q) 2267 Comment
  SD243060  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2010-9-1 16911 Amador Northern Sierra Nevada Mountains: Dufrene Road 0.7 mile east of its junction with CA-88, north of Lower Bear River Reservoir. Roadside ditch. 2044 Comment
  SD247513  Verbascum blattaria George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22070 Amador Northern Sierra Nevada Mountains Foothills: SE of Pioneer along CA-26, north side of North Fork Mokelumne River (West Point 7.5'Q) 627 Comment
  SD257269  Lupinus albicaulis George K. Helmkamp, Amy Barnes 2013-5-13 20603 Amador Sierra Nevada Mountains: Shake Ridge road, 4.0 miiles northeast of the junction with Fiddletown Road, just west of Dew Drop Dr. (Omo Ranch 7.5'Q) 1209 Comment
  SD260157  Elymus elymoides George K. Helmkamp, Mary Alice Barnes 2013-5-17 20618 Amador Foothills, Northern Sierra Nevada Mountains: Stony Creek Road, 8.7 miles southwest of Jackson, 0.58 mi. NNE (07a^z) of Chrome Mountain (Jackson 7.5'Q) 308 Comment
  SEINET10237164  Cyperus niger George K. Helmkamp, Elizabeth Helmkamp 2013-1 22154 Amador Sierra Nevada Mountains Foothills: Sutter Creek-VOlcano ROad, 11.3 miles northeast of the town of Sutter Creek Comment
  SEINET10876081  Stipa lemmonii George K. Helmkamp, E. A. Helmkamp 2013-7-10 Helmkamp 21015 Amador Northern Sierra Nevada Mountains; Plasse Road at the southern end of Silver Lake, off Highway 88/Carson Pass Highway (Tragedy Spring 7.5' Quad.). 2191 Comment
  SEINET11261451  Cryptantha affinis George Helmkamp, E. A. Helmkamp 2011-8-6 18015 Amador Northern Sierra Nevada Mountains along dirt road .3 miles E of Bear River Reservoir Road, from a point .7 miles south of CA-88.; 0 1985 Comment
  SEINET11265854  Gilia capitata subsp. pedemontana George Helmkamp, E. A. Helmkamp 2011-5-10 17247 Amador Northern Sierra Nevada Mountains Foothills: along Sutter Creek near Sutter Creak Rd., 2.9 air miles NE (681/4) of town of Sutter Creek (Amador City 7.5' Q.); 0 411 Comment
  SEINET12814380  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2006-1 11474 Amador Northern Sierra Nevada Mountains Foothills; along Hwy CA 49, 1.1 mi S of Plymouth. 326 Comment
  SEINET13203092 Image available Lupinus bicolor George K. Helmkamp, Mary Alice Barnes 2013-1 20563 Amador Sierra Nevada Mountains Foothills: along E-16/Shenandoah Rd., 3.6 miles south of River Pines, 4.15 air miles NE (39 deg. ) of Plymouth (Fiddletown 7.5' Q.) 517 Comment
  SEINET13203109 Image available Digitaria sanguinalis George K. Helmkamp, E. A. Helmkamp 2012-1 19795 Amador Northern Sierra Nevada Mountains Foothills: along CA-49 in Plymouth; 0.1 mile south of its junction with Fiddletown Rd./Plymouth-Shenandoah Rd. (Amador City 7.5' Q.) 303 Comment
  SEINET13262878 Image available Penstemon heterophyllus subsp. purdyi George K. Helmkamp 2014-1 22937 Amador along CA-26, 0.8 mile west of the bridge over the North Fork Mokelumne River 66 Comment
  SEINET13276822 Image available Mimulus aurantiacus George K. Helmkamp, Mary Alice Barnes 2013-1 20612 Amador Northern Sierra Nevada Mountains Foothills: Stony Creek Road, 6.8 miles southwest of Jackson, 0.57 mi. NE (20 deg. ) of Chrome Mountain (Jackson 7.5' Q.) 302 Comment
  SEINET3246120  Castilleja applegatei G. K. Helmkamp, E. A. Helmkamp 2010-1 16509 Amador Northern Sierra Nevada Mountains: between the west shore of Silver Lake and CA-88. 2234 Comment
  SEINET3246139  Eriogonum nudum var. oblongifolium G. K. Helmkamp, E. A. Helmkamp 2008-1 14306 Amador Northern Sierra Nevada Mountains Foothills: along CA-124 at the north noundary of Ione 91 Comment
  SEINET3257987 Image available Agrostis stolonifera George K. Helmkamp, E. A. Helmkamp 2007-9-4 12893 Amador Northern Sierra Nevada Mountains; along CA-88 at Mile-49, 3.1 miles east of Hams Station. 1860 Comment
  SEINET3257999 Image available Cystopteris fragilis George K. Helmkamp, E. A. Helmkamp 2008-5-4 13388 Amador Sierra Nevada Mountains Foothills; along Tiger Creek Road, 0.3 mi east of the turnoff to Tiger Creek Reservoir. 774 Comment
  SEINET4178522 Image available Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2011-6-17 17607 Amador Northern Sierra Nevada Mountains: junction of CA-26 and Joyce Road, northwest of the Hwy 26 bridge over North Fork Mokelumne River, 0.78 mi. SSW of Pioneer. 762 Comment
  SEINET4691431  Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 2010-1 15816 Amador Sierra Nevada Mountains Foothills: Fiddletown road (= Oleta Road), 2.9 miles east of CA-49 in Plymouth. 172 Comment
  UC1930995  Centromadia fitchii G. K. Helmkamp, E. K. Helmkamp 2006-10-6 11475 Amador Northern Sierra Nevada Mountains Foothills: along Hwy CA-49, 1.1 miles south of Plymouth Comment
  UCD100811  Claytonia perfoliata subsp. perfoliata G. K. Helmkamp; Elizabeth Helmkamp 2006-4-7 10166 Amador Northern Sierra Nevada Foothills: E of Sacramento, SW of Shenandoah Valley; Along CA Hwy 49, ca. 4.5 mi N of Plymouth. 341 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
  UCD109114  Vicia villosa subsp. varia G. K. Helmkamp; Elizabeth Helmkamp 2006-5-6 10310 Amador Northern Sierra Nevada foothills: middle of the city Jackson, 0.1 mile north of the junction of CA-49 and CA-88. 378 Comment
  UCD111153  Trifolium hirtum G. K. Helmkamp; Elizabeth Helmkamp 2007-4-26 11824 Amador Northern Sierra Nevada Mountains: along CA E-16, 0.7 mile south of River Pines. 610 Comment
  UCD115563  Draba verna G. K. Helmkamp; E. A. Helmkamp 2007-3-10 11606 Amador Northern Sierra Nevada. Rattlesnake Bar Road, 3 miles southwest of Calif. Hwy 49, SW of Pilot Hill. 390 Comment
  UCD115932  Thysanocarpus curvipes G. K. Helmkamp; Elizabeth Helmkamp 2006-4-7 10162 Amador Northern Sierra Nevada: E of Sacramento, SW of Shenandoah Valley; Along CA Hwy 49, ca. 4.5 miles N of Plymouth. 341 Comment
  UCD120114  Cryptantha flaccida G. K. Helmkamp; E. A. Helmkamp 2007-4-23 11814 Amador Northern Sierra Nevada Mountains, junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione. 229 Comment
  UCD121951  Galium triflorum G. K. Helmkamp; E. A. Helmkamp 2007-8-16 12758 Amador Northern Sierra Nevada Mountains: along the south side of Bear River Reservoir just east of the spillway. 1777 Comment
  UCD122318  Castilleja attenuata G. K. Helmkamp; E. A. Helmkamp 2007-4-5 11742 Amador Northern Sierra Nevada Mountains: along CA-49, 0.2 mile west of Amador City. 309 Comment
  UCD63242  Agrostis stolonifera G. K. Helmkamp; E. A. Helmkamp 2007-9-4 12893 Amador Northern Sierra Nevada Mountains. Along CA-88 at Mile-49, 3.1 miles east of Hams Station. 1860 Comment
  UCD72505  Leersia oryzoides G. K. Helmkamp; E. A. Helmkamp 2007-8-26 12814 Amador Northern Sierra Nevada Mountains: Along Hwy. CA-49 at mile-20, 2.1 miles north of Plymouth; beside Blue Indian Creek. 299 Comment
  UCD99289  Spergularia rubra G. K. Helmkamp; E. A. Helmkamp 2007-8-26 12821 Amador Northern Sierra Nevada Mountains; along CA-49 at the south end of Plymouth. 323 Comment
  UCR173370  Trifolium willdenovii George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10354 Amador Northern Sierra Nevada Foothills, Along Calif. Hwy 88, 0.9 mi. south of the El Dorado County line at Enterprise 274 Comment
  UCR173472  Nemophila parviflora George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10344 Amador Northern Sierra Nevada Foothills, ESE of Sacramento; 3.2 mi. east of Pine Grove along Calif. Hwy 88 841 Comment
  UCR173603  Galium aparine George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10169 A Amador Northern Sierra Nevada Foothills, E of Sacramento, SW of Shenandoah Valley; along Calif. Hwy 49, c. 4.5 mi north of Plymouth 341 Comment
  UCR173638  Plagiobothrys nothofulvus George K. Helmkamp, Elizabeth Helmkamp 2006-4-7 10160 Amador Northern Sierra Nevada Foothills, E of Sacramento, SW of Shenandoah Valley; along Calif. Hwy 49, c. 4.5 mi north of Plymouth 341 Comment
  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
  UCR173744  Anthriscus caucalis George K. Helmkamp, Elizabeth Helmkamp 2006-5-6 10306 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
  UCR174007  Festuca rubra George K. Helmkamp, Elizabeth Helmkamp 2006-5-9 10338 Amador Northern Sierra Nevada foothills, Grass Valley Creek, 1.2 miles east of Pine Grove along Calif. Hwy 88 762 Comment
  UCR179567  Ailanthus altissima George K. Helmkamp, E. A. Helmkamp 2006-10-6 11465 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49 near Enterprise, 1.8 miles south of El Dorado Co. line 274 Comment
  UCR179747  Eschscholzia californica George K. Helmkamp, E. A. Helmkamp 2006-10-6 11464 Amador Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49 near Enterprise, 1.8 miles south of El Dorado Co. line 274 Comment
  UCR181950  Typha angustifolia George K. Helmkamp, E. A. Helmkamp 2006-10-23 11572 Amador Central Valley/ Northern Sierra Nevada Foothills, along Calif. Hwy 16, 0.2 mile east of Waits Station, southwest of Plymouth 305 Comment
  UCR182142  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2006-10-23 11563 Amador Central Valley/ Northern Sierra Nevada Foothills, along Calif. Hwy 16, 0.2 mile east of Waits Station, southwest of Plymouth 305 Comment
  UCR184943  Quercus wislizeni var. wislizeni George K. Helmkamp, E. A. Helmkamp 2007-4-26 11830 Amador Foothills, northern Sierra Nevada Mountains, along Calif. E-16, 0.7 mile south of River Pines 610 Comment
  UCR184971  Gilia tricolor subsp. diffusa George K. Helmkamp, E. A. Helmkamp 2007-4-23 11808 Amador Foothills, Northern Sierra Nevada Mountains, junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione 229 Comment
  UCR184979  Rhamnus californica subsp. tomentella George K. Helmkamp, E. A. Helmkamp 2007-4-23 11817 Amador Foothills, Northern Sierra Nevada Mountains, junction of Tonzi Road and Calif. Hwy 124 about 7 miles north of Ione 229 Comment
  UCR185233  Stellaria media George K. Helmkamp, E. A. Helmkamp 2007-4-23 11787 Amador Foothills, Northern Sierra Nevada Mountains, along Bell Road beside Plymouth Creek just east of Calif. Hwy 49 in the vicinity of Enterprise 302 Comment
  UCR187297  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2007-4-5 11740 Amador Foothills, Northern Sierra Nevada Mountains, along CA-49, 0.2 mile west of Amador City 309 Comment
  UCR187303  Hordeum murinum George K. Helmkamp, E. A. Helmkamp 2007-4-5 11747 Amador Foothills, Northern Sierra Nevada Mountains, along CA-49, 0.2 mile west of Amador City 309 Comment
  UCR188506  Castilleja tenuis George K. Helmkamp, E. A. Helmkamp 2007-7-17 12521 Amador Northern Sierra Nevada Mountains, along CA-88 at Martin Meadow, 2.2 miles north of Silver Lake 2317 Comment
  UCR188508  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2007-7-17 12513 Amador Northern Sierra Nevada Mountains, along CA-88, 0.7 mile north of its junction with Mormon Emigrant Trail; Shot Rock trailhead 2325 Comment
  UCR189445  Marah fabacea George K. Helmkamp, E. A. Helmkamp 2007-3-17 11646 Amador Eastern Sacramento Valley, Buena Vista Road, 0.3 mile north of Buena Vista 104 Comment
  UCR189483  Lasthenia californica George K. Helmkamp, E. A. Helmkamp 2007-3-17 11639 Amador Sacramento Valley/ Sierra Nevada Foothills, Hwy CA-24, 3.2 mi southwest of Plymouth near Tonzi Road 210 Comment
  UCR189521  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2007-8-16 12758 Amador Northern Sierra Nevada Mountains, along the south side of Bear River Reservoir just east of the spillway 1777 Comment
  UCR190142  Agrostis stolonifera George K. Helmkamp, E. A. Helmkamp 2007-9-4 12893 Amador Northern Sierra Nevada Mountains, along CA-88 at Mile-49, 3.1 miles east of Hams Station 1860 Comment
  UCR190571  Madia elegans subsp. elegans George K. Helmkamp, E. A. Helmkamp 2007-9-4 12891 Amador Northern Sierra Nevada Mountains, along CA-88 at Mile-49, 3.1 miles east of Hams Station 1860 Comment
  UCR191118  Centaurium muehlenbergii George K. Helmkamp, E. A. Helmkamp 2007-8-26 12817 Amador Northern Sierra Nevada Mountains Foothills, along Hwy CA-49 at the south end of Plymouth 323 Comment
  UCR194694  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2007-10-13 13100 Amador Central Valley / Northern Sierra Nevada Foothills, along CA-124, 0.3 mile north of its junction with CA-88 and south of Ione 87 Comment
  UCR194695  Dittrichia graveolens George K. Helmkamp, E. A. Helmkamp 2007-10-13 13099 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
  UCR196773  Sanicula tuberosa George K. Helmkamp 2008-6-17 13663 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR196807  Athyrium filix-femina var. cyclosorum George K. Helmkamp 2008-6-17 13691 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road on the branch leading to Cole Creek, 2.7 miles east of Bear River Reservoir dam 1814 Comment
  UCR196821  Lotus nevadensis var. nevadensis George 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 1991 Comment
  UCR196829  Phlox gracilis George K. Helmkamp 2008-6-17 13671 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR197011  Viola glabella George K. Helmkamp 2008-6-17 13696 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road on the branch leading to Cole Creek, 2.7 miles east of Bear River Reservoir dam 1814 Comment
  UCR197351  Cryptantha affinis George K. Helmkamp, E. A. Helmkamp 2008-6-23 13720 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
  UCR197359  Lupinus angustiflorus George K. Helmkamp, E. A. Helmkamp 2008-6-23 13738 Amador Northern Sierra Nevada Mountains, Dufrene Road, 1.5 miles south of its junction with CA-88, jct. between Mormon Emigrant Trail and Bear Valley Reservoir Road 2021 Comment
  UCR197545  Deschampsia cespitosa subsp. cespitosa George K. Helmkamp, E. A. Helmkamp 2008-7-16 13846 Amador Northern Sierra Nevada Mountains, along CA-88 at Kirkwood 2348 Comment
  UCR197626  Calystegia malacophylla subsp. malacophylla George K. Helmkamp 2008-6-17 13658 Amador Northern Sierra Nevada Mountains, Bear River Reservoir Road, 0.1 mile south of its junction with CA-88 1991 Comment
  UCR197632  Mimulus bicolor George K. Helmkamp, E. A. Helmkamp 2008-6-9 13618 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.1 mile south of its junction with CA-88, jct. is 4.0 miles east of Cook's Station 1652 Comment
  UCR197643  Carex specifica George K. Helmkamp, E. A. Helmkamp 2008-6-23 13744 Amador Northern Sierra Nevada Mountains, Dufrene Road, 1.5 miles south of its junction with CA-88, jct. between Mormon Emigrant Trail and Bear Valley Reservoir Road 2021 Comment
  UCR197813  Lupinus albifrons var. collinus George 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
  UCR198454  Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 2008-3-12 13148 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
  UCR198455  Ranunculus californicus George K. Helmkamp, E. A. Helmkamp 2008-3-12 13149 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
  UCR198472  Veronica persica George K. Helmkamp, E. A. Helmkamp 2008-3-12 13162 Amador Sierra Nevada Mountains Foothills, Middle Bar Road, 3.7 miles south of its junction with CA-49 just south of Jackson 345 Comment
  UCR198565  Poa secunda subsp. juncifolia George K. Helmkamp, E. A. Helmkamp 2008-6-9 13621 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
  UCR201542  Psoralea physodes George K. Helmkamp, E. A. Helmkamp 2008-9-28 14164 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
  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
  UCR217844  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2010-5-31 16182 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 3.3 miles east of the village of Sutter Creek 413 Comment
  UCR217845  Kickxia spuria George K. Helmkamp, E. A. Helmkamp 2010-5-31 16183 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 3.3 miles east of the village of Sutter Creek 413 Comment
  UCR218196  Geranium molle George K. Helmkamp, E. A. Helmkamp 2010-5-31 16169 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 1.6 miles east of the village of Sutter Creek 412 Comment
  UCR218198  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2010-5-31 16167 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 1.6 miles east of the village of Sutter Creek 412 Comment
  UCR218993  Delphinium nuttallianum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16521 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219012  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2010-6-23 16354 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
  UCR219044  Viola pinetorum subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16514 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219045  Delphinium gracilentum George K. Helmkamp, E. A. Helmkamp 2010-7-13 16515 Amador Northern Sierra Nevada Mountains, between the west shore of Silver Lake and CA-88; lakeside rest stop area 2235 Comment
  UCR219057  Stachys ajugoides var. rigida George K. Helmkamp, E. A. Helmkamp 2009-9-15 15623 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.2 mile south of its junction with CA-88, 5.2 air mi. west of Bear River Reservoir 1622 Comment
  UCR219175  Eriophyllum lanatum var. grandiflorum George K. Helmkamp, E. A. Helmkamp 2010-6-23 16359 Amador Sierra Nevada Mountains Foothills, Sutter Creek Road, 9.5 miles northeast of its junction with old CA-49 in Sutter Creek village 576 Comment
  UCR219181  Dudleya cymosa subsp. cymosa George K. Helmkamp, E. A. Helmkamp 2010-6-23 16347 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
  UCR219189  Salsola tragus George K. Helmkamp, E. A. Helmkamp 2009-9-22 15641 Amador Sierra Nevada Mountains Foothills, junction of Shenandoah Road (CA-16) and Steiner Road, southwest of River Pines 750 Comment
  UCR230064  Solanum umbelliferum George K. Helmkamp, E. A. Helmkamp 2011-5-19 17296 Amador Lower Sierra Nevada Foothills, NW of Pardee Reservoir, 0.1 mile east of Rock Creek Road on a gravel spur leading to houses, 4.65 mi. SW (220 deg. ) of Jackson 280 Comment
  UCR230130  Aira caryophyllea George K. Helmkamp, E. A. Helmkamp 2011-5-19 17295 A Amador Lower Sierra Nevada Foothills, NW of Pardee Reservoir, 0.1 mile east of Rock Creek Road on a gravel spur leading to houses, 4.65 mi. SW (220 deg. ) of Jackson 280 Comment
  UCR230621  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
  UCR230753  Hoita orbicularis George K. Helmkamp, E. A. Helmkamp 2010-10-1 16998 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
  UCR232225  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2011-3-12 17087 Amador Northern Sierra Nevada Mountains Foothills, along CA-124 (Plymouth Hwy), 1.3 miles northeast of Ione 168 Comment
  UCR233117B  Collinsia torreyi var. wrightii George K. Helmkamp, E. A. Helmkamp 2011-8-6 17991 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233120B  Mimulus layneae George K. Helmkamp, E. A. Helmkamp 2011-8-6 18000 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233266  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2011-8-6 18005 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233268  Phacelia hastata var. compacta George K. Helmkamp, E. A. Helmkamp 2011-8-6 17998 Amador Northern Sierra Nevada Mountains, Ellis Road, 0.2 miles south of its junction with CA-88 2009 Comment
  UCR233340  Eriogonum nudum var. nudum George K. Helmkamp, E. A. Helmkamp 2011-8-6 17966 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR233406  Trichostema oblongum George K. Helmkamp, E. A. Helmkamp 2011-8-6 17974 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR233408  Cordylanthus tenuis subsp. tenuis George K. Helmkamp, E. A. Helmkamp 2011-8-6 17973 Amador Northern Sierra Nevada Mountains, Ellis Road, 2.1 miles south of its junction with CA-88 1794 Comment
  UCR235439  Oenothera elata subsp. hirsutissima George K. Helmkamp, E. A. Helmkamp 2011-11-21 18471 Amador Northern Sierra Nevada Mountains Foothills, along CA-88, 0.2 mile northeast of its junction with CA-104, c. 2 mi. airline SE of Ione 183 Comment
  UCR237283  Mimulus mephiticus George K. Helmkamp, E. A. Helmkamp 2012-7-2 19305 Amador Northern Sierra Nevada Mountains, Bear River Road at the south end of the dam of Lower Bear River Reservoir 1774 Comment
  UCR237292  Achnatherum occidentale subsp. occidentale George K. Helmkamp, E. A. Helmkamp 2012-7-2 19308 Amador Northern Sierra Nevada Mountains, Bear River Road, 0.1 mile east of the south end of the dam of Lower Bear River Reservoir 1776 Comment
  UCR237444  Agrostis variabilis George K. Helmkamp, E. A. Helmkamp 2012-7-14 19412 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
  UCR237445  Juncus ensifolius George K. Helmkamp, E. A. Helmkamp 2012-7-14 19422 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
  UCR237731  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2012-7-14 19386 Amador Northern Sierra Nevada Mountains, edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 miles north of Silver Lake 2317 Comment
  UCR237739  Lupinus polyphyllus var. burkei George K. Helmkamp, E. A. Helmkamp 2012-7-14 19399 Amador Northern Sierra Nevada Mountains, edge of Martin Meadow along CA-88 (Carson Pass Hwy), 2.2 miles north of Silver Lake 2317 Comment
  UCR240663  Conyza floribunda George K. Helmkamp, E. A. Helmkamp 2012-10-5 19984 Amador Northern Sierra Nevada Mountains Foothills, Fiddletown Road, 1.3 miles west of its junction with Shake Ridge Road 941 Comment
  UCR240744  Alnus rhombifolia George K. Helmkamp, E. A. Helmkamp 2012-10-5 19973 Amador Northern Sierra Nevada Mountains Foothills, beside Sutter Creek along the Sutter Creek-Volcano Road, 0.6 mile southwest of Meadowlark Lane 421 Comment
  UCR240757  Cyperus niger George K. Helmkamp, E. A. Helmkamp 2012-10-5 19979 Amador Northern Sierra Nevada Mountains Foothills, Sutter Creek Road, 10.7 miles east of CA-49, in Sutter Creek 635 Comment
  UCR240888  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2012-6-6 19119 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.1 miles west of Cooks Station 1439 Comment
  UCR241371  Ceanothus parvifolius George K. Helmkamp, E. A. Helmkamp 2012-6-26 19270 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 0.9 mile south of its junction with CA-88, S of Hwy 88/Carson Pass Hwy. and W of Lower Bear Reservoir 1617 Comment
  UCR241962  Polygonum punctatum George K. Helmkamp, E. A. Helmkamp 2012-9-7 19780 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
  UCR242634  Eschscholzia lobbii George K. Helmkamp, E. A. Helmkamp 2010-4-3 15799 Amador Low foothills northern Sierra Nevada Mountains, 4.35 mi. NE (31 deg. ) of Ione, junction of Tonzi Road and CA-124/East Plymouth Hwy 180 Comment
  UCR242635  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2010-4-3 15798 Amador Low foothills northern Sierra Nevada Mountains, 4.35 mi. NE (31 deg. ) of Ione, junction of Tonzi Road and CA-124/East Plymouth Hwy 180 Comment
  UCR242826  Achillea millefolium George K. Helmkamp, E. A. Helmkamp 2010-4-3 15815 Amador Sierra Nevada Mountains Foothills, Fiddletown Road (= Oleta Road), 2.9 miles east of CA-49 in Plymouth 172 Comment
  UCR242828  Aster foliaceus var. parryi George K. Helmkamp, E. A. Helmkamp 2010-9-1 16887 Amador Northern Sierra Nevada Mountains, along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, c. 2.75 mi. NNW of Upper Bear River Reservoir 2162 Comment
  UCR242832  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2010-9-1 16874 Amador Northern Sierra Nevada Mountains, along CA-88, 2.6 miles southwest of its junction with Mormon Emigrant Trail, c. 2.75 mi. NNW of Upper Bear River Reservoir 2162 Comment
  UCR246399  Stellaria media George K. Helmkamp, E. A. Helmkamp 2012-3-22 18625 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
  UCR246402  Luzula comosa George K. Helmkamp, E. A. Helmkamp 2012-3-22 18631 Amador Northern Sierra Nevada Mountains Foothills, Bell Road, 1.2 miles east of CA-49 at private road to Rancho Cicada Retreat 371 Comment
  UCR246581  Ceanothus parvifolius George K. Helmkamp, E. A. Helmkamp 2012-6-6 19134 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 1.5 miles south of its junction with CA-88, 5.0 mi. west (267 deg. ) of Bear River Reservoir dam 1590 Comment
  UCR246641  Lupinus grayi George K. Helmkamp, E. A. Helmkamp 2012-6-6 19137 Amador Northern Sierra Nevada Mountains, Panther Creek Road, 1.5 miles south of its junction with CA-88, 5.0 mi. west (267 deg. ) of Bear River Reservoir dam 1590 Comment
  UCR246649  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2012-6-6 19129 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 1.1 miles west of Cooks Station 1439 Comment
  UCR248366  Ericameria arborescens George K. Helmkamp, Elizabeth Helmkamp 2013-9-13 22295 Amador Northern Sierra Nevada Mountains Foothills, Fiddletown Road, 0.4 mile west of its junction with Shake Ridge Road 977 Comment
  UCR248377  Arabis hirsuta var. glabrata George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21026 Amador Northern Sierra Nevada Mountains, Plasse Road at the southern end of Silver Lake, off Hwy 88/Carson Pass Hwy 2191 Comment
  UCR248543  Woodwardia fimbriata George K. Helmkamp, Elizabeth Helmkamp 2013-9-13 22288 Amador Northern Sierra Nevada Mountains Foothills, Volcano Road; 0.1 mile northwest of the village of Volcano 671 Comment
  UCR249561  Eucephalus breweri George K. Helmkamp, E. A. Helmkamp 2007-8-16 12755 Amador Northern Sierra Nevada Mountains, along Hwy CA-88, 3.5 miles south of its junction with Mormon Emigrant Trail 2146 Comment
  UCR250169  Erodium botrys George K. Helmkamp, Elizabeth Helmkamp 2013-5-22 20663 Amador Northern Sierra Nevada Mtns. Foothills, Ostrom Road, 1.2 miles east of E-16 (Plymouth-Shenandoah Rd.), 1.1 mi. north (353 deg. ) of Fiddletown 572 Comment
  UCR250444  Torilis arvensis George K. Helmkamp, Elizabeth Helmkamp 2013-5-22 20660 Amador Northern Sierra Nevada Mtns. Foothills, Ostrom Road, 1.2 miles east of E-16 (Plymouth-Shenandoah Rd.), 1.1 mi. north (353 deg. ) of Fiddletown 572 Comment
  UCR250445  Triteleia hyacinthina George K. Helmkamp, Elizabeth Helmkamp 2013-5-22 20659 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
  UCR253234  Mimulus primuloides var. primuloides George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20999 Amador Northern Sierra Nevada Mountains, Bear River Road, 1.5 road miles east of the dam for Lower Bear River Reservoir 1837 Comment
  UCR253235  Phleum pratense George K. Helmkamp, Elizabeth Helmkamp 2013-7-6 20998 Amador Northern Sierra Nevada Mountains, Bear River Road, 1.5 road miles east of the dam for Lower Bear River Reservoir 1837 Comment
  UCR253482  Geranium dissectum George K. Helmkamp 2014-4-5 22684 Amador Eastern edge of San Joaquin Valley/lower Sierra Nevada Foothills, Sutter Creek along West Marlette Street, 0.1 mile east of Dave Brubeck Road, west end of city of Ione 85 Comment
  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
  UCR253510  Amsinckia retrorsa George K. Helmkamp 2014-4-5 22659 Amador Sierra Nevada Foothills, junction of Tonzi Road and CA-124, NE of Ione 201 Comment
  UCR253590  Eschscholzia caespitosa George K. Helmkamp 2014-4-5 22679 Amador Eastern Edge of San Joaquin Valley, 1.7 miles northeast of Ione along Hwy CA-124 175 Comment
  UCR256506  Nemophila parviflora George K. Helmkamp, Amy Barnes 2014-5-8 22851 Amador Sacramento Valley/Sierra Nevada Foothills, along CA-104, 1.2 miles southeast of Ione 146 Comment
  UCR256508  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
  UCR256514  Sidalcea hartwegii George K. Helmkamp, Amy Barnes 2014-5-8 22861 Amador Sierra Nevada Mountains Foothills, Sutter Creek-Volcano Road, 0.2 mile east of old CA-49 in town of Sutter Creek 375 Comment
  UCR257016  Castilleja attenuata George K. Helmkamp, Mary Alice Barnes 2013-5-13 20570 Amador Sierra Nevada Mountains, Fiddletown Road, c. 9 miles northeast of its junction with E-16/Shenandoah Rd. near Plymouth 665 Comment
  UCR257065  Sidalcea calycosa George K. Helmkamp, Mary Alice Barnes 2013-5-17 20619 Amador Foothills, Northern Sierra Nevada Mountains, Stony Creek Road, 8.7 miles southwest of Jackson, 0.58 mi. NNE (07 deg. ) of Chrome Mountain 308 Comment
  UCR257607  Madia gracilis George K. Helmkamp, Amy Barnes 2014-5-8 22834 Amador Sacramento Valley/Sierra Nevada Foothills, Tonzi Road, 0.4 mile east of its junction with CA-124, 4.5 air miles NE (35 deg. ) of Ione 188 Comment
  UCR259864  Cyperus eragrostis George K. Helmkamp, Elizabeth Helmkamp 2013-10-22 22459 Amador Sierra Nevada Mountains Foothills, Shenandoah Road, near Sobon Creek, 6.8 miles northeast of its junction with CA-49 in Plymouth 563 Comment
  UCR259865  Poa annua George K. Helmkamp, Elizabeth Helmkamp 2013-10-22 22458 Amador Sierra Nevada Mountains Foothills, Shenandoah Road, near Sobon Creek, 6.8 miles northeast of its junction with CA-49 in Plymouth 563 Comment
  SEINET7249042  Trifolium cyathiferum George K. Helmkamp, E. A. Helmkamp 2010-1 Amador Comment
  CHSC114147  Madia elegans subsp. vernalis G. K. Helmkamp; E. A. Helmkamp 2010-4-23 15935 Butte Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River. 157 Comment
  UCD130097  Centaurea solstitialis G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  UCR219092  Polygonum amphibium var. emersum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15579 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  UCR219263  Trichostema lanceolatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15590 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  UCR237301  Quercus douglasii George K. Helmkamp, E. A. Helmkamp 2012-4-14 18758 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
  UCR237309  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2012-4-14 18760 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  UCR237310  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18762 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  UCR237327  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2012-4-14 18737 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CAS-BOT-BC334220  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 mi NE of Arnold 1184 Comment
  CAS-BOT-BC334221  Eriogonum nudum var. nudum George K. Helmkamp; Amy Barnes 2013-9-24 22378 Calaveras Northern Sierra Nevada Mountains: N end of White Pines Reservoir, 0.6 mi N of Arnold 1186 Comment
  CAS-BOT-BC370754  Lasthenia platycarpha G. K. Helmkamp; E. A. Helmkamp 2008-3-22 13216 Calaveras San Joaguin Valley / Sierra Nevada Mountains Foothills: 1.8 miles north of Burson Rd., at the junction of Comanche Parkway South and Pattison Way (Wallace 7.5' Q.) 122 Comment
  CAS-BOT-BC520356  Hypericum concinnum George K. Helmkamp; Mary Alice Barnes 2013-5-17 20631 Calaveras Northern Sierra Nevada Mountains Foothills: Poloma Rd at its jct with Cosgrove Creek Rd, 3 mi NE (30 deg. ) of Valley Springs 278 Comment
  CAS-BOT-BC94792  Thysanocarpus curvipes G. K. Helmkamp; E. A. Helmkamp 2008-3-18 13185 Calaveras Jesus Maria Road, 2.4 miles SE of its junction with CA-26, beside Jesus Maria Creek. 305 Comment
  RSA0012145  Linanthus bolanderi George K. Helmkamp, E. A. Helmkamp 2011-5-21 17352 Calaveras Railroad Flat Road at junction with Wharregard Road and beside Esperanzo Creek, 8.3 miles NW (289deg.) of Arnold 759 Comment
  RSA0035723  Poa compressa George K. Helmkamp, Amy Barnes 2013-9-24 22362 Calaveras SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  RSA0035735  Trifolium glomeratum George K. Helmkamp, Elizabeth A. Helmkamp 2013-5-24 20704 Calaveras North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  RSA0035744  Capsella bursa-pastoris George K. Helmkamp 2013-3-14 20167 Calaveras Junction of CA-26 and Paloma Road southwest of Mokelumne Hill. 470 Comment
  RSA0047741  Elymus glaucus George K. Helmkamp, Elizabeth A. Helmkamp 2013-5-24 20700 Calaveras North side of Mokelumne River, west of Big Bar Road and the CA-49 bridge 198 Comment
  RSA0089986  Amsinckia retrorsa G. K. Helmkamp, E. A. Helmkamp 2008-3-22 13223 Calaveras San Joaquin Valley. Sierra Nevada Mountains Foothills: along CA-26, 3.7 miles southwest of Valley Springs at Lime Creek Road. 143 Comment
  RSA747029  Geranium pusillum George K. Helmkamp, E. A. Helmkamp 2007-4-26 11845 Calaveras Chili Gulch near McSorley Ranch, along Calif. Hwy 49, 5.1 miles south of the Amador County line 370 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
  RSA779399  Scirpus microcarpus George K. Helmkamp, E. A. Helmkamp 2009-7-30 15350 Calaveras Forestry Route 6N45, just north of its junction with CA-44, 15.1 miles northeast of Arnold 2018 Comment
  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
  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
  SBBG129038  Collinsia bartsiifolia var. bartsiifolia G. K. Helmkamp, E. A. Helmkamp 2012-5-31 19090 Calaveras CA-26 E of Mokelumne Hill, at the crossing of the S Fork Mokelumne River 614 Comment
  SD234852  Amsinckia retrorsa G. K. Helmkamp, E. A. Helmkamp 2008-3-22 13223 Calaveras San Joaquin Valley / Sierra Nevada Mountains Foothills: along CA-26, 3.7 miles southwest of Valley Spraings at Lime Creek Road (Valley Springs 7.5' Q) 142 Comment
  SD234886  Nemophila pulchella var. gracilis G. K. Helmkamp, E. A. Helmkamp 2008-4-11 13267 Calaveras Sierra Nevada Mountains Foothills: junction of Fricot City Road and Calavaritas road, southeast of the city of San Andreas. 433 Comment
  SD236274  Arctostaphylos viscida subsp. mariposa G. K. Helmkamp, E. A. Helmkamp 2008-3-18 13192 Calaveras Sierra Nevada Mountains Foothills: Jesus Maria Road, 3.2 miles southeast of its junction with CA-26; beside Jesus Maria Creek. 319 Comment
  SD237637  Plectritis G. K. Helmkamp, Amy Barnes 2010-5-7 15986 Calaveras Sierra Nevada Mountains Foothills: Michel Road, 0.1 mile east of its junction with Mountain Ranch Road; 5.2 mi. east (92a^z) of San Andreas (Calaveritas 7.5'Q). Small canyon beside a creek. 512 Comment
  SD240887  Madia citrigracilis George K. Helmkamp, E. A. Helmkamp 2011-7-12 17714 Calaveras Northern Sierra Nevada Mountains Foothills: Winton Road, 6.7 miles east of tis junction with CA-26 in West Point (Devils Nose 7.5'Q) 1192 Comment
  SD240986  Euphorbia oblongata George K. Helmkamp, E. A. Helmkamp 2011-6-17 17564 Calaveras Northern Sierra Nevada Mountains Foothills: Winton Road, 0.8 mil northeast of CA-26 at West Point (West Point 7.5'Q) 977 Comment
  SD243098  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2011-9-16 18298 Calaveras Northern Sierra Nevada Mountains Foothills:along Railroad Flat Road, 2.2 miles southeast of its junction with CA-26, 0.4 mile SE of Wilseyville (Rail Road Flat 7.5'Q) 894 Comment
  SD248467  Plantago erecta George K. Helmkamp 2013-3-14 20186 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 7.5'Q) 91 Comment
  SD248485  Lewisia rediviva George K. Helmkamp 2013-3-14 20182 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 7.5'Q) 91 Comment
  SD255765  Geranium robertianum George K. Helmkamp 2014-5-17 22906 Calaveras Sierra Nevada Mountains Foothills; Happy Valley just east of Mokelumne Hill along CA 26 at the weest junction with Jesus Maria Road. 523 Comment
  SEINET13203135 Image available Mimulus guttatus George K. Helmkamp 2014-1 22907 Calaveras Sierra Nevada Mountains Foothills: Happy Valley, just east of Mokelumne Hill, along CA-26, at the west junction with Jesus Maria Road (Mokelumne Hill 7.5' Q.) 524 Comment
  SEINET2473407 Image available Triphysaria eriantha George K. Helmkamp, E. A. Helmkamp 2008-1 13215 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 120 Comment
  SEINET3859920  Anthriscus caucalis George K. Helmkamp, Amy Barnes 2010-5-7 15972 Calaveras Sierra Nevada Mountains Foothills: along CA-49, 0.4 mile north of its junction with CA-12, vicinity of San Andreas.; 0 223 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
  SEINET3860174  Trifolium hirtum George K. Helmkamp 2010-5-7 15969 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
  SEINET4178606 Image available Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2011-3-29 17090 Calaveras East end San Joaquin Valley: along CA-26, 1.8 miles southwest of Valley Springs 206 Comment
  SEINET4560796  Ceanothus integerrimus George K. Helmkamp, E. A. Helmkamp 2011-1 17577 Calaveras Northern Sierra Nevada Mountains Foothills: along Ca-26, 2.7 road miles northwest (1.7 air miles, 312 degrees) of West Point 802 Comment
  SEINET4691418  Vicia sativa subsp. nigra George K. Helmkamp, E. A. Helmkamp 2011-1 17106 Calaveras San Joaquin Valley: along Warren Road near Long Horn Ct., 0.4 mile north of junction with CA-26. 56 Comment
  SEINET7248292  Epilobium brachycarpum George K. Helmkamp, Amy Barnes 2013-1 22346 Calaveras Northern Sierra Nevada Mountains: SE side of White Pines Reservoir, 0.6 mile NE of Arnold. 1184 Comment
  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
  UCD104341  Clarkia biloba subsp. biloba G. K. Helmkamp; E. A. Helmkamp 2006-6-29 10775 Calaveras Northern Sierra Nevada foothills. Along Hwy. CA-26, 12.3 miles E of the Mokelumne Hill turnoff from Hwy. CA-49. 640 Comment
  UCD133882  Lasthenia platycarpha G. K. Helmkamp; E. A. Helmkamp 2007-3-17 11650 Calaveras Eastern Sacramento Valley; about 1 mile north of Burson on the road to south Comanche Reservoir. 152 Comment
  UCR173745  Hypochaeris radicata George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10795 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, at crossing of the South Fork of the Mokelumne River 753 Comment
  UCR173992  Rubus laciniatus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10799 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 0.2 mile north of West Point 838 Comment
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Aug 4 2008
  UCR174926  Clarkia biloba subsp. biloba George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10775 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 12.3 miles east of the Mokelumne Hill turnoff from Calif. Hwy 49 640 Comment
  UCR174928  Lathyrus latifolius George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10788 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 12.3 miles east of the Mokelumne Hill turnoff from Calif. Hwy 49 640 Comment
  UCR174930  Lilium humboldtii subsp. humboldtii George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10792 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 0.6 mile past Sandy Gulch 793 Comment
  UCR174932  Hypericum concinnum George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-29 10780 Calaveras Northern Sierra Nevada foothills, along Calif. Hwy 26, 12.3 miles east of the Mokelumne Hill turnoff from Calif. Hwy 49 640 Comment
  UCR184932  Geranium molle George K. Helmkamp, E. A. Helmkamp 2007-4-26 11845 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
  UCR197280  Collomia heterophylla George K. Helmkamp, E. A. Helmkamp 2008-5-29 13522 Calaveras Sierra Nevada Mountains, Arnold Way Road parallel to CA-4 (Ebbetts Pass Hwy), 0.8 mile northeast of Arnold 1265 Comment
  UCR197334  Sanicula bipinnatifida George K. Helmkamp, E. A. Helmkamp 2008-5-8 13401 Calaveras Sierra Nevada Mountains Foothills, Ridge Road, 1.6 miles east of CA-26, southeast of Glencoe 866 Comment
  UCR197335  Calochortus monophyllus George K. Helmkamp, E. A. Helmkamp 2008-5-8 13402 Calaveras Sierra Nevada Mountains Foothills, Ridge Road, 1.6 miles east of CA-26, southeast of Glencoe 866 Comment
  UCR197393  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2008-3-18 13186 Calaveras Sierra Nevada Mountains Foothills, Jesus Maria Road, 2.4 miles southeast of its junction with CA-26; beside Jesus Maria Creek 305 Comment
  UCR197407  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2008-3-18 13189 Calaveras Sierra Nevada Mountains Foothills, Jesus Maria Road, 2.4 miles southeast of its junction with CA-26; beside Jesus Maria Creek 305 Comment
  UCR197421  Triphysaria eriantha George K. Helmkamp, E. A. Helmkamp 2008-3-18 13197 Calaveras Sierra Nevada Mountains Foothills, along CA-49 at the crossing of the North Fork of the Calaveras river; 8.3 miles south of Mokelumne Hill 235 Comment
  UCR197544  Lepidium nitidum var. nitidum George K. Helmkamp, E. A. Helmkamp 2008-3-22 13218 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
  UCR197583  Ailanthus altissima George K. Helmkamp, E. A. Helmkamp 2008-5-29 13533 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road parallel to CA-4 and 0.4 mile from the road junction; at the Utica Creek crossing 759 Comment
  UCR197628  Rhamnus californica subsp. tomentella George K. Helmkamp, E. A. Helmkamp 2008-5-29 13544 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
  UCR197798  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2008-3-22 13210 Calaveras San Joaquin Valley / Sierra Nevada Mountains Foothills, 1.8 miles north of Burson via Burson Rd., at the junction of Comanche Parkway South and Pattison Way 122 Comment
  UCR197835  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2008-3-22 13238 Calaveras Sierra Nevada Mountains Foothills, along Mokelumne Vista Road at the junction with CA-49, just west of Mokelumne Hill village 479 Comment
  UCR218164  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 233 Comment
  UCR218165  Linanthus bicolor George K. Helmkamp, Amy Barnes 2010-5-7 15984 Calaveras Sierra Nevada Mountains Foothills, Michel Road, 0.1 mile east of its junction with Mountain Ranch Road. 5.2 mi. east (92.5 deg. ) of San Andreas 512 Comment
  UCR229596  Sanicula tuberosa George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18057 Calaveras Northern Sierra Nevada Mountains, Black Springs Road [Forest Route 7N23], 1.7 miles north of its junction with CA Hwy 4 2058 Comment
  UCR229598  Collinsia torreyi var. wrightii George K. Helmkamp, Ann Kerchner, Amy Barnes 2011-8-13 18054 Calaveras Northern Sierra Nevada Mountains, Black Springs Road [Forest Route 7N23], 1.7 miles north of its junction with CA Hwy 4 2058 Comment
  UCR230065  Capsella bursa-pastoris George K. Helmkamp, E. A. Helmkamp 2011-5-19 17317 Calaveras Sierra Nevada Foothills, Paloma Road, 3.1 miles southwest of its junction with CA-26, 4 miles NE (34 deg. ) of Valley Springs 352 Comment
  UCR232270  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2011-3-29 17108 Calaveras San Joaquin Valley, along Warren Road near Long Horn Ct., 0.4 mile north of junction with CA-26 56 Comment
  UCR232288  Lupinus albicaulis George K. Helmkamp, E. A. Helmkamp 2010-8-3 16683 Calaveras Northern Sierra Nevada Mountains, along CA-4 at the Arnold Byway, about 0.3 mile northeast of Arnold 1244 Comment
  UCR233133A  Lathyrus sulphureus George K. Helmkamp, E. A. Helmkamp 2011-5-21 17322 Calaveras Northern Sierra Nevada Mountains Foothills, along CA-26, 2.8 miles northeast of CA-49 in Mokelumne Hill 476 Comment
  UCR233142A  Ranunculus californicus George K. Helmkamp, E. A. Helmkamp 2011-5-21 17337 Calaveras Northern Sierra Nevada Mountains Foothills, Rail Road Flat Road, 1.2 miles south of its junction with Ridge Road, 10.1 mi. ENE (83 deg. ) of Mokelumne Hill 854 Comment
  UCR233152B  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2011-7-12 17716 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
  UCR235447  Nemophila parviflora var. parviflora George K. Helmkamp, E. A. Helmkamp 2012-5-15 18981 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 Comment
  UCR235454  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2012-5-15 18987 Calaveras Northern Sierra Nevada Mountains Foothills, at a crossing of Murray Creek along Murray Creek Road; 1.8 miles east of Pope Road in San Andreas 351 Comment
  UCR235455  Lupinus adsurgens George K. Helmkamp, E. A. Helmkamp 2012-5-15 18986 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
  UCR235505  Lolium multiflorum George K. Helmkamp, E. A. Helmkamp 2012-5-15 18966 Calaveras Northern Sierra Nevada Mountains Foothills, along Murray Creek Road (Murraydale Ln.), 1.4 miles east of Pope Road in San Andreas 387 Comment
  UCR238416  Festuca microstachys var. pauciflora George K. Helmkamp, E. A. Helmkamp 2012-4-4 18704 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238418  Trifolium depauperatum var. depauperatum George K. Helmkamp, E. A. Helmkamp 2012-4-4 18709 Calaveras Northern San Joaquin Valley, along CA-26, 0.1 mile west of its junction with Milton Road, between Linden & Valley Springs 67 Comment
  UCR238921  Hordeum murinum subsp. leporinum George K. Helmkamp, E. A. Helmkamp 2012-2-3 18529 Calaveras San Joaquin Valley/Sierra Nevada Foothills, junction of Paloma Road and Gillam Road, NE of Valley Springs & SE of Pardee Reservoir 285 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
  UCR241379  Euphorbia oblongata George K. Helmkamp, E. A. Helmkamp 2012-9-20 19870 Calaveras Northern Sierra Nevada Mountains Foothills, trailhead parking area at the west side of CA-49, south of the bridge over the Mokelumne River, NW of Mokelumne Hill 564 Comment
  UCR242613  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2011-6-17 17564 Calaveras Northern Sierra Nevada Mountains Foothills, Winton Road, 0.8 mile northeast of CA-26 at West Point 977 Comment
  UCR245711  Juncus George K. Helmkamp, Amy Barnes 2013-9-24 22352 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR245856  Elymus elongatus George K. Helmkamp, Amy Barnes 2013-9-24 22370 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR245858  Polygonum aviculare George K. Helmkamp, Amy Barnes 2013-9-24 22368 Calaveras Northern Sierra Nevada Mountains, SE side of White Pines Reservoir, 0.6 mile NE of Arnold 1184 Comment
  UCR249880  Vulpia bromoides George K. Helmkamp, Elizabeth Helmkamp 2013-3-26 20231 Calaveras Northern Sierra Nevada foothills, Along CA-26 at the junction with Shelton Road, southwest of Valley Springs, NE of Linden 204 Comment
  UCR249882  Elymus caput-medusae George K. Helmkamp, Mary Alice Barnes 2013-5-17 20647 Calaveras Northern Sierra Nevada Mountains Foothills, Along CA Hwy 26, 0.4 mile northeast of its junction with Campo Seco Turnpike Road, SW of Mokelumne Hill 438 Comment
  UCR249893  Mimulus guttatus George K. Helmkamp, Mary Alice Barnes 2013-5-17 20635 Calaveras Northern Sierra Nevada Mountains Foothills, Poloma Road at its junction with Cosgrove Creek Road, 3 miles NE (30 deg. ) of Valley Springs 279 Comment
  UCR249937  Plagiobothrys austiniae George K. Helmkamp 2013-3-14 20187 Calaveras San Joaquin Valley/Sierra Nevada Foothills, Jenny Lind Road (County Road J14) 0.1 mile north of its junction with Kirby Road, 24 mi. NE of Stockton 91 Comment
  UCR249941  Claytonia perfoliata subsp. mexicana George K. Helmkamp 2013-3-14 20174 Calaveras Central Sierra Nevada Foothills, Along CA-26, 2.2 miles northeast of its junction with CA-12 381 Comment
  UCR250050  Ranunculus californicus George K. Helmkamp, Mary Alice Barnes 2013-4-24 20397 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
  UCR250283  Vicia villosa subsp. villosa George K. Helmkamp 2013-3-14 20177 Calaveras Central Sierra Nevada Foothills, Along the north side of CA-26 just east of the west junction with Lime Creek Road 223 Comment
  UCR250890  Vicia villosa subsp. villosa George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20678 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
  UCR251246  Calochortus albus George K. Helmkamp, Elizabeth Helmkamp 2013-5-24 20668 Calaveras Northern Sierra Nevada Mountains Foothills, Whiskey Slide Road, 2.6 miles south of its junction with Jesus Maria Road, 7.9 mi. SE (118 deg. ) of Mokelumne Hill 561 Comment
  UCR253251  Conyza canadensis George K. Helmkamp, Amy Barnes 2013-9-23 22315 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR253459  Echinochloa crus-galli George K. Helmkamp, Amy Barnes 2013-9-23 22307 Calaveras Sierra Nevada Mountains Foothills, Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 974 Comment
  UCR257064  Eriophyllum lanatum var. achilleoides George K. Helmkamp, Mary Alice Barnes 2013-5-17 20620 Calaveras Northern Sierra Nevada Mountains Foothills, Poloma Road at its junction with Cosgrove Creek Road, 3 miles NE (30 deg. ) of Valley Springs 279 Comment
  UCR257096  Centaurium muehlenbergii George K. Helmkamp, Mary Alice Barnes 2013-5-17 20628 Calaveras Northern Sierra Nevada Mountains Foothills, Poloma Road at its junction with Cosgrove Creek Road, 3 miles NE (30 deg. ) of Valley Springs 279 Comment
  UCR257098  Lythrum hyssopifolia George K. Helmkamp, Mary Alice Barnes 2013-5-17 20625 Calaveras Northern Sierra Nevada Mountains Foothills, Poloma Road at its junction with Cosgrove Creek Road, 3 miles NE (30 deg. ) of Valley Springs 279 Comment
  UCR258374  Festuca microstachys George K. Helmkamp 2014-5-28 22922 Calaveras Northern Sierra Nevada Mountains, along Winton Road (FR 7N03), 12.3 miles east of CA-26 in West Point 1640 Comment
  UCR258397  Mimulus bicolor George K. Helmkamp 2014-5-28 22933 Calaveras Northern Sierra Nevada Mountains, along Winton Road along the north side of Wilson Lake 1128 Comment
  UCR87700  Mimulus jepsonii George K. Helmkamp, E. A. Helmkamp 1995-6-22 95 4 30 Calaveras Sierra Nevada Mtns, along Calif. Hwy 4, 2.5 mi NE of Arnold 1479 Comment
  UCR88441  Poa epilis George K. Helmkamp, E. A. Helmkamp 1995-6-22 95- 4 -27 Calaveras Sierra Nevada Mtns, along Calif. Hwy 4, 2.5 mi NE of Arnold 1479 Comment
  SEINET7249125  Onagraceae George K. Helmkamp, Amy Barnes 2013-1 Calaveras Comment
  SBBG126069  Nemophila heterophylla G. K. Helmkamp with E. A. Helmkamp 2009-3-11 14372 Colusa St Hwy 20, 14.3 mi SW of Williams 375 Comment
  SD236305  Quercus douglasii G. K. Helmkamp, E. A. Helmkamp 2008-10-14 14258 Colusa Sacramento Valley: along River Road (generally following the Sacramento River), 1.1 miles north of Colusa. 17 Comment
  SD236433  Physalis lancifolia G. K. Helmkamp, E. A. Helmkamp 2008-10-14 14270 Colusa Sacramento Valley: along CA-20, 2 miles west of Meridian 14 Comment
  SD237466  Nemophila heterophylla G. K. Helmkamp, E. A. Helmkamp 2009-3-11 14372 Colusa Inner North Coast Range Foothills: along CA-20, 14.3 miles southwest of Williams. (Salt Canyon 7.5'Q) 374 Comment
  UCR206319  Madia exigua George K. Helmkamp, E. A. Helmkamp 2009-5-20 14741 Colusa Central Inner Coast Ranges, along CA-16 near Bear Creek, 1.6 miles south of the junction with CA-20 320 Comment
  UCR206353  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2009-3-11 14375 Colusa Inner North Coast Range Foothills, along CA-20, 14.3 miles southwest of Williams 375 Comment
  UCR206360  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2009-3-11 14383 Colusa Sacramento Valley, on the south side of CA-20 just west of the junction with Freshwater Road, northwest edge of Williams 49 Comment
  UCR206399  Cercis occidentalis George K. Helmkamp, E. A. Helmkamp 2009-3-11 14378 Colusa Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams beside Salt Creek 107 Comment
  UCR206891  Cryptantha flaccida George K. Helmkamp, E. A. Helmkamp 2009-3-11 14362 Colusa Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams, on the north side of Salt Creek 162 Comment
  UCR233295  Vicia villosa subsp. varia George K. Helmkamp, E. A. Helmkamp 2011-4-1 17126 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 0.4 miles southeast of Sites 93 Comment
  UCR233442  Triteleia laxa George K. Helmkamp, E. A. Helmkamp 2011-4-1 17130 Colusa Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 0.4 miles southeast of Sites 93 Comment
  CAS-BOT-BC126747  Pinus contorta var. murrayana G. K. Helmkamp; E. A. Helmkamp 2010-7-23 16614 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road at the entrance to a camping area, 0.2 mile west of the lake, 5.5 miles NE (35 deg. ) of Kyburz 2114 Comment
  CAS-BOT-BC249057  Agastache urticifolia George K. Helmkamp; E. A. Helmkamp 2010-9-1 16899 El Dorado Northern Sierra Nevada Mountains: Mehrten Springs Road, 0.6 mile north of its junction with CA-88 2018 Comment
  CAS-BOT-BC433221  Eriophyllum lanatum var. achilleoides George K. Helmkamp; Elizabeth Helmkamp 2013-6-15 20861 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 2.3 miles south of it sjunction with US-50 in Kyburz. 1454 Comment
  CAS-BOT-BC434225  Delphinium nuttallianum George K. Helmkamp; Elizabeth Helmkamp 2013-6-19 20933 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.8 mile north of Mormon Emigrant Trail and near Jim Quinn Spring, N of Carson Pass Hwy. 2116 Comment
  CAS-BOT-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
  CAS-BOT-BC523885  Grindelia hirsutula George K. Helmkamp; E. A. Helmkamp 2012-9-17 19852 El Dorado Northern Sierra Nevada Mountains Foothills: along Forebay Rd, 4.8 mi N of its jct with Pony Express Rd in Pollock Pines 954 Comment
  HSC101346  Pinus contorta subsp. murrayana G. K. Helmkamp, E. A. Helmkamp 2009-11-5 15732 El Dorado Sierra Nevada Mountains Foothills: Lake Oaks Mobile Home Park, Diamond Springs, south of the junction of Patterson Dr. and Pleasant Valley Rd. 523 Comment
  HSC104177  Chrysolepis sempervirens G. K. Helmkamp, Amy Barnes 2014-7-28 22962 El Dorado Northern Sierra Nevada Mountains: Wentworth Springs Rd., 1.6 mi. W of Ice House Rd. 1863 Comment
  HSC104240  Cordylanthus tenuis subsp. tenuis G. K. Helmkamp, Amy Barnes 2014-7-28 22955 El Dorado Sierra Nevada Mountains; Wentworth Springs Rd., 3.8 mi. E of Stumpy Meadows Reservoir 1357 Comment
  RSA0011970  Stephanomeria lactucina George K. Helmkamp, E. A. Helmkamp 2011-9-13 18266 El Dorado Foster Meadow Road, 0.6 miles north of its junction with CA-88 2136 Comment
  RSA0012002  Angelica breweri George K. Helmkamp, E. Helmkamp 2011-9-13 18242 El Dorado Mormon Emigrant Trail, 21.4 rd. miles southeast of Jenkinson s Lake, between Silver Fork Road and Hwy 88, 1.1 mi. NW (331 deg ) of Alder Hill 2270 Comment
  RSA0012134  Lupinus stiversii George K. Helmkamp, E. A. Helmkamp 2011-7-7 17633 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
  RSA0012137  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2011-7-7 17653 El Dorado Capps Crossing (Bonnetti) Road, 2.8 miles south of its junction with Mormon Emigrant Trail 1297 Comment
  RSA0013405  Viola sheltonii George K. Helmkamp, E. A. Helmkamp 2012-5-18 19019 El Dorado Capps Crossing Road (Bonnetti Rd.), 0.1 mile northwest of the bridge over Diamond Creek, E of Jenkinson Lake and S of US Hwy 50 1186 Comment
  RSA0035747  Poa secunda George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-15 20877 El Dorado Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  RSA0035754  Lupinus albifrons var. collinus George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-15 20868 El Dorado Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  RSA0036003  Penstemon roezlii George K. Helmkamp, Elizabeth A. Helmkamp 2013-6-15 20865 El Dorado Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  RSA0043186  Nemophila heterophylla George K. Helmkamp, E. A. Helmkamp 2009-5-14 14694 El Dorado hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  RSA0049891  Polygonum bistortoides George K. Helmkamp, E. A. Helmkamp 2012-7-6 19356 El Dorado Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50. 2078 Comment
  RSA0065884  Symphyotrichum eatonii George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-2 22081 El Dorado Mehrten Spring Road, 0.5 mile north of CA-88/Carson Pass Hwy 1793 Comment
  RSA0065887  Kelloggia galioides George K. Helmkamp, Elizabeth A. Helmkamp 2013-8-2 22087 El Dorado Mehrten Spring Road, 0.5 mile north of CA-88/Carson Pass Hwy. 1793 Comment
  RSA0114571  Lupinus bicolor George K. Helmkamp, Mary Alice Barnes 2013-4-30 20441 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
  RSA714087  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2005-8-9 9792 El Dorado Northern Sierra Nevada Foothills: El Dorado National Forest; WSW o Lake Tahoe; 7.4 miles N. of Union Reservoir along Ice House Road at the junction of Cheese Camp Road. 1765 Comment
  RSA714207  Hypericum perforatum George K. Helmkamp, E. A. Helmkamp 2005-7-11 9689 El Dorado 30 mi. SW of Lake Tahoe; 1 mi E of Jenkinson Lake along Mormon Emigrant Road (County Highway 5). 1220 Comment
  RSA747616  Gayophytum eriospermum George K. Helmkamp, Elizabeth Helmkamp, Amy Barnes 2007-6-20 12368 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
  RSA750445  Gnaphalium palustre George K. Helmkamp, E. A. Helmkamp 2008-8-1 13943 El Dorado Wright's Lake Road at Lyons Creek, 4.0 miles north of CA-50. 2043 Comment
  RSA750731  Euphorbia nutans George K. Helmkamp, E. A. Helmkamp 2008-9-16 14121 El Dorado Lake Oaks Mobile Home Park 530 Comment
  RSA751093  Crepis acuminata George K. Helmkamp, E. A. Helmkamp 2008-7-11 13782 El Dorado north side of CA-88, 2.1 miles northeast of the junction with Mormon Emigrant Trail 2340 Comment
  RSA752641  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2008-4-25 13327 El Dorado along Bear Creek Road 0.4 mile southeast of its junction with Meadow Brook Road, SE of Georgetown. 747 Comment
  RSA752673  Luzula comosa George K. Helmkamp, E. A. Helmkamp 2008-4-25 13307 El Dorado Sierra Nevada Mountains Foothills: Junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown. 674 Comment
  RSA755550  Euphorbia serpillifolia George K. Helmkamp, E. A. Helmkamp 2009-8-19 15507 El Dorado Wright's Lake Road, 8.6 miles north of its upper junction with Ice House Road 1785 Comment
  RSA755563  Epilobium George K. Helmkamp, E. A. Helmkamp 2009-8-19 15509 El Dorado Wright s Lake Road, 8.6 miles north of its upper junction with Ice House Road 1785 Comment
  RSA756762  Cryptantha torreyana George K. Helmkamp, Amy Barnes 2009-7-8 15126 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
  RSA756919  Galium porrigens var. porrigens George K. Helmkamp, E. A. Helmkamp 2009-5-14 14696 El Dorado hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  RSA756923  Chrysanthemum George K. Helmkamp, E. A. Helmkamp 2009-5-12 14685 El Dorado Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  RSA757004  Deschampsia cespitosa subsp. cespitosa George K. Helmkamp, Amy Barnes 2009-7-8 15144 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
  RSA757540  Carex feta George K. Helmkamp, Amy Barnes 2009-7-8 15158 El Dorado Wrights Lake Road, 0.4 mile east of its junction with Ice House Road, about 1.3 miles north of Ice House 1654 Comment
  RSA781116  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2010-4-23 15928 El Dorado Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  RSA781118  Salvia sonomensis George K. Helmkamp, E. A. Helmkamp 2010-4-23 15926 El Dorado Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  RSA781365  Agastache urticifolia George K. Helmkamp, E. A. Helmkamp 2009-7-22 15280 El Dorado Forestry Route 42, 1.6 miles west of its junction with Wrights Lake Road 1851 Comment
  RSA781449  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2010-4-23 15933 El Dorado Salmon Falls Road at the Salmon Falls crossing of the American River 157 Comment
  RSA785405  Lupinus albicaulis George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16330 El Dorado Sierra Nevada Mtns Foothills: about 0.1 mi S of Slug Gulch Road at a point 4.7 mi E of its junction with Perry Creek Road. 1021 Comment
  RSA785464  Achillea millefolium George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16325 El Dorado about 0.1 mile south of Slug Gulch Road at a point 4.7 miles east of its junction with Perry Creek Road 1021 Comment
  RSA785465  Rumex crispus George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16326 El Dorado about 0.1 mile south of Slug Gulch Road at a point 4.7 miles east of its junction with Perry Creek Road 1021 Comment
  RSA789517  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-5-22 19059 El Dorado Forest Service Road 31 (Peavine Ridge Road), 1.3 miles wet of its junction with Ice House Canyon Road 1582 Comment
  RSA791763  Gayophytum humile George K. Helmkamp, E. A. Helmkamp 2006-7-7 10825 El Dorado Northern Sierra Nevada Mountains.: Wright s Lake Road, 3.2 miles north of Highway US-50, northeast of Kyburz 1982 Comment
  RSA792722  Mimulus moschatus George K. Helmkamp, William Barnes 2010-9-4 16924 El Dorado Mehrten Spring Rd and continuing on Cat Creek Rd., 4.7 miles northwest of CA-88; Middle Fork of Cosumnes River 1620 Comment
  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
  RSA795070  Stachys ajugoides var. rigida George K. Helmkamp, E. A. Helmkamp 2011-10-13 18412 El Dorado Forebay Road, 8.1 miles northwest of Pollock Pines, at north side of bridge over the South Fork American River 596 Comment
  RSA795086  Mentha arvensis George K. Helmkamp, E. A. Helmkamp 2011-9-1 18201 El Dorado Silver Fork Road, 0.9 miles south of its junction with US-50 in Kyburz 1280 Comment
  RSA795088  Aster oregonensis George K. Helmkamp, E. A. Helmkamp 2011-9-1 18204 El Dorado Silver Fork Road, 3.1 miles south of its junction with US-50 in Kyburz 1447 Comment
  SBBG128870  Mimulus guttatus G. K. Helmkamp, E. A. Helmkamp 2012-4-27 18854 El Dorado Mosquito Rd N of Placerville, at S side of the crossing of the S Fork American River 401 Comment
  SBBG129005  Viola douglasii G. K. Helmkamp, E. A. Helmkamp 2012-4-24 18834 El Dorado Bear Crk Rd, 0.4 mi S of its jct with Meadow Brook Rd, 2. mi NE (66 deg) of Garden Valley 705 Comment
  SBBG133754  Lessingia leptoclada G. K. Helmkamp, E. A. Helmkamp 2011-7-30 17914 El Dorado Omo Ranch Rd at the jct with N-S Rd, 0.67 mi NW (300 deg) of jct with Hwy 88, 8.9 mi SE of Omo Ranch 1457 Comment
  SD197609  Juncus parryi G. K. Helmkamp, E. A. Helmkamp 2008-8-8 13962 El Dorado Echo Summit, west side of a Highway Maintenace Station and ca. 100 yards north of CA-50. 2256 Comment
  SD197685  Gnaphalium palustre G. K. Helmkamp, E. A. Helmkamp 2008-8-1 13943 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road at Lyons Creek, 4.0 miles north of CA-50. 2043 Comment
  SD212457  Perideridia parishii G. K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9929 El Dorado Northern Sierra Nevada Mountains; Wright's Lake Tie Road, 1.0 mile west of its junction with Wright's Lake Road. 2043 Comment
  SD234433  Monardella odoratissima subsp. pallida G. K. Helmkamp, E. A. Helmkamp 2006-7-31 11066 El Dorado Northern Sierra Nevada Mountains: along Wright's Lake Road (Forestry Route 4) 3.3 miles N of Hwy US-50 (Pyramid Peak 7.5' Q) 2049 Comment
  SD234522  Collinsia bartsiifolia var. bartsiifolia G. K. Helmkamp, Elizabeth A. Helmkamp 2006-6-4 10632 El Dorado Northern Sierra Nevada foothills: Rock Creek Road, about 2.2 miles east of its junction with Hwy CA-193. 423 Comment
  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
  SD236182  Chondrilla juncea G. K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9850 El Dorado Northern Sierra Nevada Foothills: E of Sacramento; Sly Park Road (County Highway E-16), ca. 1 mi SW of Jenkinson Lake 1067 Comment
  SD236256  Lonicera hispidula var. vacillans G. K. Helmkamp, E. A. Helmkamp 2008-6-3 13583 El Dorado Sierra Nevada Mountains: Forbay Road, 7.1 miles northwesst of CA-50 (road junction in Pollock Pines), noutlet road leading to the South Fork of the American River (Pollock Pines 7.5'Q) 715 Comment
  SD236389  Trientalis latifolia G. K. Helmkamp, E. A. Helmkamp 2008-6-3 13558 El Dorado Sierra Nevada Mountains: Pony Express Trail, 0.8 miles east of Sly Park Road (Polluck Pines) and parallel to US-50. 1213 Comment
  SD237239  Carex bolanderi G. K. Helmkamp, E. A. Helmkamp 2008-6-3 13576 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
  SD237258  Triteleia laxa G. K. Helmkamp, E. A. Helmkamp 2008-6-5 13611 El Dorado Sierra Nevada Mountains Foothills: Forbay Road. .5 mile north of its crossing of the South Fork American River. 668 Comment
  SD237264  Dactylis glomerata G. K. Helmkamp, E. A. Helmkamp 2008-6-5 13606 El Dorado Sierra Nevada Mountains Foothills: Forbay Road. .5 mile north of its crossing if the South Fork American River. 668 Comment
  SD237350  Solidago canadensis subsp. elongata G. K. Helmkamp, Amy Barnes 2009-7-8 15165 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. 1654 Comment
  SD237549  Navarretia leptalea subsp. bicolor G. K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16579 El Dorado Northern Sierra Nevada Mountains: southeast side of Wright's Lake, 5.8 mi NE of Kyburz (Pyramid Peak 7.5'Q) 2085 Comment
  SD237597  Rubus parviflorus G. K Helmkamp, E. A. Helmkamp 2008-6-3 13569 El Dorado Sierra Nevada Mountains: Pony Express Trail, 0.8 mile east of Sly Park Road (Pollock Pines) and parallel to US-50 (Pollock Pines 7.5'Q) 1213 Comment
  SD239508  Camassia quamash subsp. quamash G. K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16584 El Dorado Northern Sierra Nevaa Mountains: southernmost point of Wright's Lake, 5.6 mi NE (33a^z) of Kyburz (Pyramid Peak 7.5'Q) 2085 Comment
  SD239540  Poa secunda George K. Helmkamp, E. A. Helmkamp 2012-4-27 18852 El Dorado Foothills, northern Sierra Nevada Mountains: Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River (Slate Mountain 7.5Q) 401 Comment
  SD239623  Psilocarphus tenellus G. K Helmkamp, E. A. Helmkamp 2009-5-24 14783 El Dorado Sierra Nevada Mountains Foothills: Sand Ridge Road, 3.3 miles east of the Cosumnes River and CA-49 (Fiddletown 7.5'Q) 520 Comment
  SD239654  Arabidopsis thaliana George K. Helmkamp, E. A. Helmkamp 2009-4-4 14503 El Dorado Sierra Nevada Mountains Foothills: Sand Ridge Road, 2.3 miles west of Bucks Bar Road (Camino 7.5'Q) 654 Comment
  SD239783  Nemophila menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2009-4-4 14501 El Dorado Northern Sierra Nevada Mountains Foothills: Happy Valley Road, 0.8 mile west of its junction with Happy Valley Cut-off (Camino 7.5') 607 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
  SD240936  Athysanus pusillus George K. Helmkamp, E. A. Helmkamp 2012-5-22 19035 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.9 mile south of US-50 in Kyburz (Kyburz 7.5'Q) 1381 Comment
  SD243153  Ribes cereum var. cereum George K. Helmkamp, E. A. Helmkamp 2010-8-20 16807 El Dorado Northern Sierra Nevada Mountains: Foster Meadow Road 0.6 mile west of Mormon Emigrant Trail in the Leek Spring area. Open seep area. 2232 Comment
  SD243169  Stachys palustris subsp. pilosa George K. Helmkamp, E. A. Helmkamp 2011-9-24 18336 El Dorado Northern Sierra Nevadaa Mountains: Weentworth Springs road at the junction with South Creek Road, 4.0 miles north of the Wentworth Springs / Loon Lake junction. 1750 Comment
  SD243192  Delphinium andersonii George K. Helmkamp, E. A. Helmkamp 2010-8-20 16814 El Dorado Northern Sierra Nevada Mountains: Foster Meadow Road, 0.6 mile west of Mormon Emigrant Trail in the Leek Spring area. 2232 Comment
  SD247401  Chenopodium George K. Helmkamp, E. A. Helmkamp 2006-7-28 11029 El Dorado Northern Sierra Nevada Mountains: 2.5 miles south of Highway US-50, beside Phillips on Sierra-at-Tahoe Road. 2226 Comment
  SD247467  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2013-6-15 20862 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz. 1454 Comment
  SD248442  Phacelia mutabilis George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20991 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, north side of its junction with Mormon Emigrant Trail (Tragedy Spring 7.5'Q) 2188 Comment
  SD254537  Hieracium albiflorum George K. Helmkamp, Amy Barnes 2014-8-11 23002 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 1.7 miles south of Crystal Basin Information Station (Riverton 7.5'Q) 1609 Comment
  SD257327  Collinsia heterophylla George K. Helmkamp, Elizabeth Helmkamp 2013-5-2 20454 El Dorado Sierra Nevada Mountains Foothills: NW of Somerset, Bucks Bar Road, 1.1 miles southeast of its junction with Pleasant Valley Road (Camino 7.5'Q) 622 Comment
  SDSU21019  Cryptantha simulans George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20917 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, north side of its junction wtih Mormon Emigranr Trail (Tragedy Spring 7.5' +/- 100). Coniferous forest. 2187 Comment
  SEINET11261552  Cordylanthus tenuis subsp. tenuis George Helmkamp, E. A. Helmkamp 2010-9-23 16972 El Dorado Northern Sierra Nevada Mountains on Round Tent Canyon Road. 0.56 miles W of its junction with peavine Ridge Road at Forest Route 31.; 0 1521 Comment
  SEINET11261879  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2012-4-30 18880 A El Dorado Northern Sierra Nevada Mountains Footlhills: Mosquito Road, 0.3 miles N of the bridge over the South Fork American River.; 0 427 Comment
  SEINET11262287  Calochortus clavatus var. avius George Helmkamp, E. A. Helmkamp 2011-7-30 17951 El Dorado Northern Sierra Nevada Mountains: Omo Ranch Road, 7.4 miles southeast of Omo Ranch, 1.9 miles NW airline of Hwy 88 junction (Caldor 7.5).; 0 1372 Comment
  SEINET11266064  Allophyllum integrifolium George Helmkamp, E. A. Helmkamp 2013-6-19 20943 El Dorado Northern Sierra Nevada Mountains: Silver Fork Road, 0.8 mile north of Mormon Emigrant Trail and near Jim Quinn Spring, N of Carson Pass Hwy (Tragedy Spring 7.5' Q); 0 2116 Comment
  SEINET13276710 Image available Agrostis scabra George K. Helmkamp, Amy Barnes 2014-1 22999 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 1.7 miles south of Crystal Basin Information Station (Riverton 7.5' Q.) 1609 Comment
  SEINET13384114 Image available Agrostis idahoensis George K. Helmkamp, Amy Barnes 2012-1 19646 El Dorado Northern Sierra Nevada Mountains: junction of Ice House Road and entrance to campground on the south end of Loon Lake 1980 Comment
  SEINET13384150 Image available Panicum acuminatum var. acuminatum George K. Helmkamp, Amy Barnes 2012-1 19658 El Dorado Northern Sierra Nevada Mountains: northwest side of Ice House Road, 0.2 mile north of its junction with Forest Route 13N20, c 1.3 miles northeast of Wentworth Springs Road 1786 Comment
  SEINET1908711  Cardamine hirsuta G. K. Helmkamp, E. A. Helmkamp 2008-1 13131 El Dorado Foothills, northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Diamond Springs Comment
  SEINET2440973  Trifolium willdenovii George K. Helmkamp, E. A. Helmkamp 2010-5-14 16024 El Dorado Sierra Nevada Mountains Foothills: along CA-16 (Mt. Aukum Rd.), 1.8 mi NE of Somerset (Camino 7.5'). 567 Comment
  SEINET2441341  Daucus carota George K. Helmkamp, E. A. Helmkamp 2009-8-8 15414 El Dorado Foothills, northern Sierra Nevada Mountains: Pleasant Valley [Sly Park] Road, 0.3 mile west of Pleasant Valley (Camino 7.5' Q). 595 Comment
  SEINET2441555  Hypericum concinnum George K. Helmkamp, E. A. Helmkamp 2009-6-3 14906 El Dorado Northern Sierra Nevada Mountains: Forbay Road, 4.7 miles northwest of its junction with Pony Express Trail in Pollock Pines (Slate Mountain 7.5' Q.). 945 Comment
  SEINET2441560  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2009-8-8 15419 El Dorado Sierra Nevada Mountains Foothills: Lake Foreboy, 0.8 mile northwest of Pollock Pines on Forebay Road (Pollock Pines 7.5' Q.). 1195 Comment
  SEINET2442019  Chamaebatia foliolosa George K. Helmkamp, E. A. Helmkamp 2010-5-15 16046 El Dorado Sierra Nevada Mountains Foothils: String Canyon Road, 1.4 miles northeast of its junction with Consumnes Mine Road (Sly Park 7.5').; 0 1109 Comment
  SEINET2442072  Allophyllum integrifolium George K. Helmkamp, Mary Alice Barnes; Amy Barnes 2008-7-28 13919 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road, 3.4 miles north of its junction with CA Hwy 50 (Pyramid Peak 7.5' Q.).; 0 2042 Comment
  SEINET2442190  Erysimum capitatum var. capitatum George K. Helmkamp, E. A. Helmkamp 2010-5-14 16033 El Dorado Sierra Nevada Mountains Foothills. Happy Valley Raod, 1.1 mi. NE (69 degrees) of Somerset, just west of the bridge over the Cosumnes River (Camino 7.5'). 544 Comment
  SEINET3238893 Image available Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 2007-12-11 13128 El Dorado Sierra Nevada Mountains Foothills; Lake Oaks Mobile Home Park. 530 Comment
  SEINET3245629  Artemisia douglasiana G. K. Helmkamp, E. A. Helmkamp 2009-1 15660 El Dorado Sierra Nevada Mountains Foothills; Canyon Valley Rd. in the east end of Diamond Springs, c. 0.1 mile SE of Pleasant Valley Road (Placerville 7.5') 567 Comment
  SEINET3245630  Triteleia laxa G. K. Helmkamp, E. A. Helmkamp 2007-1 11916 El Dorado Foothills, Northern Sierra Nevada Mountains: along Hwy CA-49, 6.1 miles northwest of Placerville (Garden Valley 7.5') 454 Comment
  SEINET3245888  Symphyotrichum foliaceum var. parryi G. K. Helmkamp, E. A. Helmkamp 2007-1 12944 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. 2048 Comment
  SEINET3246053  Asparagaceae G. K. Helmkamp, E. A. Helmkamp 2007-1 11684 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
  SEINET3246133  Arabidopsis thaliana G. K. Helmkamp, E. A. Helmkamp 2007-1 11868 El Dorado Foothills, Northern Sierra Nevada Mountains: junction of Ice House Road, about 2 miles northwest of US-50 1029 Comment
  SEINET3257993 Image available Duchesnea indica George K. Helmkamp, E. A. Helmkamp 2008-3-11 13144 El Dorado Sierra Nevada Mountains Foothills; Lake Oaks Mobile Home Park, Diamond Springs. 530 Comment
  SEINET3282767 Image available Silene californica George K. Helmkamp, E. A. Helmkamp 2007-4-30 11896 El Dorado Foothills, Northern Sierra Nevada Mountains; hiking trail leaving from CA-49, 3.4 miles northwest of Placerville. 511 Comment
  SEINET3282771 Image available Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2007-4-27 11870 El Dorado Foothills, Northern Sierra Nevada Mountains; junction of Ice House Road and White Meadows Road, about 2 miles northwest of US-50. 1029 Comment
  SEINET3287507 Image available Poa pratensis subsp. pratensis George K. Helmkamp, E. A. Helmkamp 2009-5-26 14807 El Dorado Sierra Nevada Mountains Foothills; Lake Oaks Mobile Home Park, Diamond Springs. 530 Comment
  SEINET3815543 Image available Aquilegia formosa George K. Helmkamp, E. A. Helmkamp 2011-7-30 17940 El Dorado Northern Sierra Nevada Mountains: North-South Road, 5.5 miles N of its junction with Omo Ranch Road, E side of bridge over Pi Pi Creek 1209 Comment
  SEINET3821918 Image available Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2011-11-17 18458 El Dorado Southeastern Sacramento Valley, 1.6 miles west of Latrobe on South Shingle Road (Folsom SE 7.5' Q) 194 Comment
  SEINET3860095  Lotus purshianus var. purshianus George K. Helmkamp, Mary Alice Barnes; Mary Jane Ganibe 2010-7-6 16466 El Dorado Sierra Nevada Mountains: Silver Fork Road, 4.1 miles south of its junction with US-50 in Kyburz.; 0 1500 Comment
  SEINET3885034  Calochortus coeruleus George K. Helmkamp, E. A. Helmkamp 2008-6-9 13648 El Dorado Northern Sierra Nevada Mountains: Cat Creek Road, 0.1 mile north of its junction with CA-88, jct. is 4.2 miles east of Cook's Station (Peddler Hill 7.5').; 0 1652 Comment
  SEINET3889060  Trillium angustipetalum George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10535 El Dorado Northern Sierra Nevada Mountains: Along Ice House Canyon Road, 10.6 mi. S of Wentworth Springs Road (just S of the Jones fork of Silver Creek and SE of Union Valley Reservoir) (Riverton 7.5' Q).; 0 1509 Comment
  SEINET4142652 Image available Penstemon laetus subsp. laetus George K. Helmkamp, E. A. Helmkamp 2011-7-7 17629 El Dorado Northern Sierra Nevada Mountains: Park Creek Road, 0.4 miles E of junction with Sly Park Road, 1.4 mi. SE of Pollock Pines 1289 Comment
  SEINET4691728  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2011-1 18314 El Dorado Northern Sierra Nevada Mountains: along Ice House road, 8.6 miles north of its junction with US-50. 1613 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
  SEINET7249082  Senecio triangularis George K. Helmkamp, E. A. Helmkamp 2012-1 19353 El Dorado Northern Sierra Nevada Mountains: Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50. 2078 Comment
  SEINET9261729  Achnatherum occidentale subsp. pubescens George K. Helmkamp, Elizabeth Helmkamp 2013-1 22090 El Dorado Northern Sierra Nevada Mountains: Mehrten Spring Road, 0.5 mile north of CA-88 (Peddler Hill 7.5' Q) 1792 Comment
  SEINET9262050  Gilia leptalea subsp. leptalea George K. Helmkamp, Elizabeth Helmkamp 2013-1 21033 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail at the junction with Pilliken Road (Leek Spring Hill 7.5 Q) 1823 Comment
  SEINET959048  Trifolium hirtum G. K. Helmkamp, E. A. Helmkamp 2005-1 9715 El Dorado Northern Sierra Nevada Foothills; Pollock Pines area just S of US Highway 50 along Country Road #5 (Pollock Pines 7.5 Q. 1159 Comment
  SEINET959313  Gayophytum diffusum G. K. Helmkamp, E. A. Helmkamp; Elizabeth Helmkamp. 2005-1 9891 El Dorado Northern Sierra Nevada Foothils.:Wright's Lake (Forest Road 4) 2.1 road miles N of US highway 50 (ca. 5-6 mi E of Kyburz) (Pyramid Peak 7.5 Q) 1951 Comment
  UC1930968  Madia gracilis G. K. Helmkamp, E. A. Helmkamp 2006-8-24 11269 El Dorado Northern Sierra Nevada Mountains Foothills: Ice House Road, 2.3 miles south of Union Reservoir Road Comment
  UC1950982  Lagophylla glandulosa G. K. Helmkamp, E. A. Helmkamp 2006-9-29 11447 El Dorado Northern Sierra Nevada Mountains Foothills: Salmon Falls Rd just west of CA-49 and 4 miles south of Cool (Pilot Hill 7.5' Q. Comment
  UC2015366  Madia gracilis G. K. Helmkamp, E. A. Helmkamp 2011-9-23 18304 El Dorado Northern Sierra Nevada Mountains: along Ice House Road, 8.6 miles north of its junction with US-50 Comment
  UCD100034  Polygonum aviculare subsp. depressum G. K. Helmkamp; E. A. Helmkamp 2007-9-11 12933 El Dorado Northern Sierra Nevada Mountains Foothills: Along Hwy US-50, 0.4 mile southwest of Phillips. 1829 Comment
  UCD101245  Eriogonum spergulinum var. reddingianum G. K. Helmkamp 2007-7-7 12463 El Dorado Northern Sierra Nevada Mountains, along CA-89, 0.9 mile west of Luther Pass in the Grass Lake area. 2338 Comment
  UCD101444  Eriogonum umbellatum var. furcosum G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11023 El Dorado Northern Sierra Nevada Mountains, North Truckee River Road, 1.4 miles north of CA-50 and ca. 6 miles south of Lake Tahoe. 2009 Comment
  UCD102457  Ribes roezlii G. K. Helmkamp; Elizabeth Helmkamp 2006-8-24 11280 El Dorado Northern Sierra Neveda Mountains Foothills: Ice House Road, 2.3 miles south of Union Reservoir Road. 1551 Comment
  UCD102809  Micranthes californica G. K. Helmkamp; Elizabeth Helmkamp 2006-3-26 10116 El Dorado Northern Sierra Nevada Foothills; ENE of Sacramento, Rock Creek Road at Jaybird Creek, 5.1 mi E of CA Highway 193 (generally ENE of Chili Bar). 590 Comment
  UCD103422  Geranium molle G. K. Helmkamp; E. A. Helmkamp 2007-3-22 11664 El Dorado Northern Sierra Nevada Mountains; Bucks Bar Road, 4.4 miles south of Pleasants Valley Road at the junction of Sand Ridge road. 628 Comment
  UCD103820  Acmispon americanus var. americanus G. K. Helmkamp; E. A. Helmkamp 2005-7-31 9727 El Dorado Northern Sierra Nevada Foothills: Junction of Ice House Road and CA Highway 50 (E of Pollock Pines). 1006 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
  UCD105312  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-8-9 12728 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road, 1.1 miles south of the lake. 2113 Comment
  UCD105642  Cercis occidentalis G. K. Helmkamp; E. A. Helmkamp 2007-3-23 11693 El Dorado Northern Sierra Nevada Mountains: hills bordering the east end of Sacramento Valley. Salmon Falls Road, 4.6 miles north of Green Valley Road, above NE arm of Folsom Lake. 384 Comment
  UCD105677  Cytisus scoparius G. K. Helmkamp; Elizabeth Helmkamp 2006-5-20 10503 El Dorado Northern Sierra Nevada Foothills: ca. 5 air mi off CA Hwy 193, E of Georgetown; 1.7 mi. N of Wentworth Springs Road on Bottlehill Road (junction just E of Balderson Station). 972 Comment
  UCD106912  Epilobium G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10897 El Dorado Northern Sierra Nevada Mtns. Wright's Lake Road, 6.1 miles north of Hwy US-50; at the junction with the road from Ice House Reservoir. 2029 Comment
  UCD107831  Medicago polymorpha G. K. Helmkamp; E. A. Helmkamp 2007-4-20 11774 El Dorado Northern Sierra Nevada Mountains: along Green Valley Road at junction of Jet Quartz Creek Rd., between Four Corners and Gold Hill. 410 Comment
  UCD108002  Melilotus albus G. K. Helmkamp; E. A. Helmkamp 2006-10-20 11545 El Dorado Northern Sierra Nevada Mountains Foothills. Bucks Bar Road, 3.9 miles south of Pleasant Valley Road, general vicinity of Somerset. 625 Comment
  UCD108569  Lupinus lepidus var. sellulus G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10878 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 6.1 miles north of Hwy US-50; at the junction with the road from Ice House Reservoir. 2030 Comment
  UCD109233  Trifolium obtusiflorum G. K. Helmkamp; E. A. Helmkamp 2005-7-31 9717 El Dorado Northern Sierra Nevada Foothills: Junction of Ice House Road and CA Highway 50 (E of Pollock Pines). 1006 Comment
  UCD111093  Salix jepsonii G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-19 10750 El Dorado Northern Sierra Nevada Mountains: 8 miles east of Ice House Road on the road to Wright's Lake. 2000 Comment
  UCD113880  Potentilla gracilis G. K. Helmkamp; E. A. Helmkamp 2006-7-10 10875 A 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
  UCD114277  Barbarea orthoceras G. K. Helmkamp; Elizabeth A. Helmkamp 2007-5-31 12246 El Dorado Northern Sierra Nevada Mountains: Forestry Route 42, 4.3 miles west of its junction with Wright's Lake Road, generally between Wright's Lake and Ice House Reservoir. 1753 Comment
  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
  UCD123879  Kickxia elatine G. K. Helmkamp; E. A. Helmkamp 2007-9-19 12987 El Dorado Northern Sierra Nevada Mountains; junction of Lost Creek Road and French Creek Road just north of Frenchtown. 366 Comment
  UCD124157  Penstemon roezlii G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-19 10768 El Dorado Northern Sierra Nevada Mountains; about 1.3 miles north of Hwy US-50 on Wright's Lake Road. 1676 Comment
  UCD125084  Lamium amplexicaule G. K. Helmkamp; E. A. Helmkamp 2007-3-3 11594 El Dorado Northern Sierra Nevada Foothills; Cameron Park, junction of Santos Circle and Santos Court. 370 Comment
  UCD125085  Lamium amplexicaule G. K. Helmkamp; E. A. Helmkamp 2007-3-10 11604 El Dorado Northern Sierra Nevada Mountains; Rattlesnake Bar Road, 3 miles southwest of CA-49, SW of Pilot Hill. 390 Comment
  UCD125216  Monardella odoratissima subsp. pallida G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11160 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail, 21.0 miles east of its junction with Sly Park Road. 2174 Comment
  UCD125841  Trichostema lanceolatum G. K. Helmkamp; E. A. Helmkamp 2006-10-18 11530 El Dorado Northern Sierra Nevada Mountains Foothills: Diamond Springs; village along Hwy. CA-49 south of Placerville. 540 Comment
  UCD127882  Perideridia lemmonii G. K. Helmkamp; E. A. Helmkamp 2006-8-24 11266 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 2.3 miles south of Union Reservoir Road. 1552 Comment
  UCD130410  Chondrilla juncea G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12567 El Dorado Northern Sierra Nevada Mountains: Rock Creek Road, 7.1 miles east of its junction with CA-193. 567 Comment
  UCD130513  Cirsium andersonii G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11011 El Dorado Northern Sierra Nevada Mountains: Echo Summit along Hwy US-50; at entrance to the road maintenance station. 2245 Comment
  UCD130812  Cirsium vulgare G. K. Helmkamp; E. A. Helmkamp 2007-9-11 12934 El Dorado Northern Sierra Nevada Mountains: Along Hwy US-50, 0.4 mile southwest of Phillips. 1829 Comment
  UCD132302  Eurybia integrifolia G. K. Helmkamp; E. A. Helmkamp 2006-7-31 11070 El Dorado Northern Sierra Nevada Mountains. Along Wright's Lake Road (Forestry Route 4) at Lyons Creek, about 4 miles north of Hwy. U.S.-50. 1863 Comment
  UCD133545  Lactuca serriola G. K. Helmkamp; E. A. Helmkamp 2006-8-24 11272 El Dorado Northern Sierra Nevada Mountains: Ice House Road, 2.3 miles south of Union Reservoir Road. 1552 Comment
  UCD134894  Pinus ponderosa G. K. Helmkamp; E. A. Helmkamp 2007-3-23 11699 A El Dorado Northern Sierra Nevada Mountains: Rattlesnake Bar Road, 1.4 miles west of CA-49 at Pilot Hill. 313 Comment
  UCD135119  Pseudotsuga menziesii var. menziesii G. K. Helmkamp; E. A. Helmkamp 2007-2-24 11590 El Dorado Northern Sierra Nevada Mountains: Lake Oaks Mobile Home Park, Pleasant Valley Road and Patterson Dr., east end of Diamond Springs. 536 Comment
  UCD135248  Pseudognaphalium thermale G. K. Helmkamp; E. A. Helmkamp 2007-9-11 12936 El Dorado Northern Sierra Nevada Mountains Foothills: Along Hwy US-50 at Echo Summit. 2256 Comment
  UCD135574  Senecio integerrimus var. major G. K. Helmkamp; E. A. Helmkamp 2006-6-10 10684 El Dorado Northern Sierra Nevada Mountains: along Ice House Road, 10.6 miles south of Wentworth Springs Road (just south of the Jones Fork of Silver Creek). 1509 Comment
  UCD135575  Senecio integerrimus var. major G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10851 El Dorado Northern Sierra Nevada Mtns: Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz. 2049 Comment
  UCD136621  Symphyotrichum spathulatum G. K. Helmkamp; E. A. Helmkamp 2006-7-28 11034 El Dorado Northern Sierra Nevada Mountains, 2.5 miles south of Hwy US-50, beside Phillips on Sierra-at-Tahoe Rd. 2226 Comment
  UCD137073  Wyethia helenioides G. K. Helmkamp; E. A. Helmkamp 2007-5-7 11962 El Dorado Northern Sierra Nevada Mountains: Pedro Hills Road, 0.5 mile west of its junction with CA-49, junction of roads 5.3 miles south of Cool. 311 Comment
  UCD137634  Valeriana californica G. K. Helmkamp; E. A. Helmkamp 2006-7-7 10852 El Dorado Northern Sierra Nevada Mtns: Wright's Lake Road, 4.1 miles north of Hwy. US-50, northeast of Kyburz. 2049 Comment
  UCD137635  Valeriana californica G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-19 10753 El Dorado Northern Sierra Nevada Mountains, 8 miles east of Ice House Road on the road to Wright's Lake. 2000 Comment
  UCD139341  Triteleia ixioides subsp. scabra G. K. Helmkamp; E. A. Helmkamp 2007-6-6 12265 El Dorado Northern Sierra Nevada Mountains: along Mormon Emigrant Trail, 8.3 miles east of its junction with Sly Park Road. 1616 Comment
  UCD141507  Juncus effusus subsp. pacificus G. K. Helmkamp; E. A. Helmkamp 2005-9-23 9908 El Dorado Northern Sierra Nevada Foothills. Wright's Lake Road (Forest Road 4) 2.1 road miles North of US Highway 50 (around 5-6 miles east of Kyburz). 1854 Comment
  UCD170482  Pelargonium grossularioides G. K. Helmkamp; E. A. Helmkamp 2009-5-12 14682 El Dorado Sierra Nevada Mountains Foothills: Lake Oaks Mobile Home Park, Diamond Springs. 530 Comment
  UCD170876  Isatis tinctoria George K. Helmkamp; Elizabeth Helmkamp 2006-6-10 10702 El Dorado Northern Sierra Nevada Mountains, Ice House Road at the turnoff to Loon Lake. 1982 Comment
  UCD55731  Aira caryophyllea G. K. Helmkamp; Elizabeth Helmkamp 2006-5-1 10283 El Dorado Northern Sierra Neveda foothills, corner of Pleasant Valley Road and Patterson Drive; W end of Diamond Springs. 536 Comment
  UCD56647  Carex feta G. K. Helmkamp; E. A. Helmkamp 2006-8-7 11186 El Dorado Northern Sierra Nevada Mountains: Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road. 2250 Comment
  UCD60218  Bromus tectorum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-24 10534 El Dorado Northern Sierra Nevada Mountains: Along Ice House Canyon Road, 10.6 mi. S of Wentworth Springs Road (just S of the Jones fork of Silver Creek and SE of Union Valley Reservoir). 1505 Comment
  UCD60373  Bromus hordeaceus G. K. Helmkamp; E. A. Helmkamp 2007-5-5 11937 El Dorado Northern Sierra Nevada Mountains: along CA-49, 3.7 miles northwest of Placerville. 549 Comment
  UCD60380  Lupinus bicolor G. K. Helmkamp; E. A. Helmkamp 2007-5-1 11923 El Dorado Northern Sierra Nevada Mountains: along Hwy. CA-49 at the junction with Teal Road, 3.0 miles northwest of US-50 in Placerville. 558 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
  UCD72498  Bromus suksdorfii G. K. Helmkamp; E. A. Helmkamp 2007-8-9 12735 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road, 1.4 miles south of the lake. 2101 Comment
  UCD74333  Dactylis glomerata G. K. Helmkamp; E. A. Helmkamp 2007-9-26 13016 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
  UCD89515  Panicum capillare G. K. Helmkamp; E. A. Helmkamp 2007-7-23 12571 El Dorado northern Sierra Nevada Mountains. Rock Creek road, 7.1 miles east of its junction with CA-193. 567 Comment
  UCD90678  Poa bulbosa G. K. Helmkamp; E. A. Helmkamp 2007-4-27 11870 El Dorado Northern Sierra Nevada Mountains. Junction of Ice House Road and White Meadows Road. About 2 miles northwest of US-50. 1029 Comment
  UCD95370  Eschscholzia lobbii G. K. Helmkamp; E. A. Helmkamp 2007-4-20 11765 El Dorado Northern Sierra Nevada Mountains; 2.2 miles north of US-50 on Bass Lake Road, overlooking Bass Lake, between El Dorado Hills and Cameron Park. 384 Comment
  UCD95788  Delphinium hansenii subsp. hansenii G. K. Helmkamp; Elizabeth A. Helmkamp 2006-6-4 10619 El Dorado Northern Sierra Nevada foothills: Rock Creek Road at Dark Canyon, 1.4 miles east of the junction with Hwy. CA-193. 381 Comment
  UCD98510  Scleranthus annuus subsp. annuus G. K. Helmkamp; E. A. Helmkamp 2007-3-23 11687 El Dorado Northern Sierra Nevada Mountains; bordering east end of Sacramento Valley. Bass Lake Road at the southeast end of Bass Lake. 381 Comment
  UCD99787  Persicaria punctata G. K. Helmkamp; E. A. Helmkamp 2006-10-18 11531 El Dorado Northern Sierra Nevada Mountains Foothills: Diamond Springs; village along Hwy. CA-49 south of Placerville. 540 Comment
  UCR15437  Galium trifidum var. pusillum George K. Helmkamp 1977-9-5 s.n. El Dorado Sierra Nevada Mtns., Grass Lake, near Luther Pass 2317 Comment
  UCR170237  Elymus elymoides subsp. californicus George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9916 El Dorado Northern Sierra Nevada Foothills, Wright's Lake Road (Forest Road 4) c. 4.0 road miles north of US-50, NE of Kyburz 2061 Comment
  UCR170241  Monardella odoratissima subsp. pallida George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9912 El Dorado Northern Sierra Nevada Foothills, Wright's Lake Road (Forest Road 4) c. 4.0 road miles north of US-50, NE of Kyburz 2061 Comment
  UCR170341  Elymus glaucus subsp. glaucus George K. Helmkamp, Elizabeth Helmkamp 2005-9-23 9887 El Dorado Northern Sierra Nevada Foothills, Silver Fork, 2.1 mi west of Kyburz along US Highway 50 1220 Comment
  UCR170364  Collomia grandiflora George K. Helmkamp, Elizabeth Helmkamp 2005-8-9 9769 El Dorado Northern Sierra Nevada Foothills., WSW of Lake Tahoe; Union Reservoir along Ice House Road; boat ramp and loading area 1476 Comment
  UCR170365  Agastache urticifolia George K. Helmkamp, Elizabeth Helmkamp 2005-8-9 9792 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
  UCR170437  Quercus kelloggii George K. Helmkamp, Elizabeth Helmkamp 2005-10-29 10014 El Dorado Northern Sierra Nevada Foothills, [E of Sacramento; c. 5 air mi NNE of Placerville], 5.1 [road] mi east of Calif. Highway 193 along Rock Creek Road 451 Comment
  UCR170473  Polygonum hydropiper George K. Helmkamp, Elizabeth Helmkamp 2005-9-12 9865 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
  UCR170570  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2005-9-9 9844 El Dorado Northern Sierra Nevada Foothills, E of Sacramento; Squaw Hollow area at junction of Hanks Exchange Road and Ranch Road, 0.9 mi south of Pleasant Valley Road 683 Comment
  UCR170648  Gnaphalium palustre George K. Helmkamp, E. A. Helmkamp 2005-8-9 9776 El Dorado Northern Sierra Nevada Foothills, WSW of Lake Tahoe; NE of Union Valley Reservoir along Ice House Road 1576 Comment
  UCR170662  Lindernia dubia var. anagallidea George K. Helmkamp, E. A. Helmkamp 2005-8-14 9813 El Dorado Northern Sierra Nevada Foothills, Diamond Springs. Lake Oaks mobile home park 521 Comment
  UCR170982  Alnus rhombifolia George K. Helmkamp, E. A. Helmkamp 2006-1-16 10052 El Dorado Northern Sierra Nevada Foothills, Corner of Pleasant Valley Road and Patterson Drive, at the W end of Diamond Springs 537 Comment
  UCR171039  Juncus effusus George K. Helmkamp, E. A. Helmkamp 2005-7-31 9722 El Dorado Northern Sierra Nevada Foothills, Junction of Ice House Road and Calif. Highway 50, east of Pollock Pines 1006 Comment
  UCR171114  Ceanothus cuneatus subsp. cuneatus George K. Helmkamp, E. A. Helmkamp 2006-3-26 10107 El Dorado Northern Sierra Nevada Foothills, ENE of Sacramento; Rock Creek Road, 1.4 mi east of Calif. Highway 193 (generally east of Chili Bar) 428 Comment
  UCR171115  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2006-3-26 10106 El Dorado Northern Sierra Nevada Foothills, ENE of Sacramento; Rock Creek Road, 0.9 mi east of Calif. Highway 193 396 Comment
  UCR171177  Ceanothus lemmonii George K. Helmkamp, E. A. Helmkamp 2006-3-18 10080 El Dorado Northern Sierra Nevada Foothills, Corner of Pleasant Valley Road and Patterson Drive; W end of Diamond Springs 537 Comment
  UCR171194  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2005-7-31 9762 El Dorado Northern Sierra Nevada Foothills, 20 mi WSW of Lake Tahoe; Ice House Road, N of Calif. Highway 50 and 1.5 mi south of junction with Ice House Reservoir 1637 Comment
  UCR171195  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2005-7-31 9743 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
  UCR171240  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2005-7-11 9693 El Dorado Northern Sierra Nevada Foothills, 30 miles SW of Lake Tahoe; 1 mile east of Jenkinson Lake along Mormon Emigrant Road/County Highway 5 1220 Comment
  UCR171543  Hypericum perforatum George K. Helmkamp, E. A. Helmkamp 2005-7-31 9733 El Dorado Northern Sierra Nevada Foothills, Junction of Ice House Road and Calif. Highway 50, east of Pollock Pines 1006 Comment
  UCR172644  Dodecatheon pulchellum George K. Helmkamp, Elizabeth Helmkamp 2006-4-20 10203 El Dorado Northern Sierra Nevada Foothills, Between N and Middle forks of Cosumnes River; Junction of Sand Ridge Road and Cutaway Lane, 2.1 mi SW of Somerset 665 Comment
  UCR172645  Geranium molle George K. Helmkamp, Elizabeth Helmkamp 2006-4-20 10202 El Dorado Northern Sierra Nevada Foothills, Between N and Middle forks of Cosumnes River; Junction of Sand Ridge Road and Cutaway Lane, 2.1 mi SW of Somerset 665 Comment
  UCR172657  Calandrinia ciliata George K. Helmkamp, Elizabeth Helmkamp 2006-4-13 10190 El Dorado Northern Sierra Nevada Foothills, El Dorado National Forest; Along Calif. Hwy 193, 1 mi NE of Greenwood 518 Comment
  UCR172670B  Sherardia arvensis George K. Helmkamp, Elizabeth Helmkamp 2006-4-13 10179 El Dorado Northern Sierra Nevada Foothills, El Dorado National Forest, Along Calif. Hwy 193, just N of Kelsey, south of Gopher Hill 610 Comment
  UCR173170  Geranium molle George K. Helmkamp, Elizabeth Helmkamp 2006-4-25 10214 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
  UCR173186  Trifolium dubium George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10522 El Dorado Northern Sierra Nevada Foothills, NE of Georgetown; along Bottlehill Road, 1.4 mi. N of Wentworth Springs Road 1006 Comment
  UCR173188  Capsella bursa-pastoris George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10520 El Dorado Northern Sierra Nevada Foothills, NE of Georgetown; along Bottlehill Road, 1.4 mi. N of Wentworth Springs Road 1006 Comment
  UCR173324  Madia gracilis George K. Helmkamp, Elizabeth Helmkamp 2006-5-20 10484 El Dorado Northern Sierra Nevada foothills, along Calif. Hwy 49 between Diamond Springs and Placerville; 0.4 mi. N of Weber Creek 549 Comment
  UCR173325  Torilis arvensis George K. Helmkamp, Elizabeth Helmkamp 2006-5-20 10492 El Dorado Northern Sierra Nevada Foothills, Along Calif. Hwy 193, 1.4 mi. N of Placerville 427 Comment
  UCR173447  Festuca megalura George K. Helmkamp, Elizabeth Helmkamp 2006-5-24 10552 El Dorado Northern Sierra Nevada Mountains, Junction of Ice House Canyon Road and West Meadows Road, SSW of Union Valley Reservoir, just N of US Hwy 50 1067 Comment
  UCR173596  Castilleja exserta subsp. exserta George K. Helmkamp, Elizabeth Helmkamp 2006-5-4 10292 El Dorado Northern Sierra Nevada Mountains Foothills, east end of Diamond Springs, 0.1 mile north of the junction of Pleasant Valley Road and Calif. Hwy 49 543 Comment
  UCR173598  Lupinus bicolor George K. Helmkamp, Elizabeth Helmkamp 2006-5-4 10294 El Dorado Northern Sierra Nevada Mountains Foothills, east end of Diamond Springs, 0.1 mile north of the junction of Pleasant Valley Road and Calif. Hwy 49 543 Comment
  UCR173650  Cercis occidentalis George K. Helmkamp, Elizabeth Helmkamp 2006-4-6 10154 El Dorado Northern Sierra Nevada Foothills, ENE of Sacramento; 4.2 mi NW of Coloma along Calif. Hwy 49 247 Comment
  UCR173710  Prunus virginiana var. demissa George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10560 El Dorado Northern Sierra Nevada foothills, along Hwy US-50 at Bridal Veil Falls, east of Pacific House 1002 Comment
  UCR173712  Eriodictyon californicum George K. Helmkamp, Elizabeth Helmkamp 2006-5-20 10504 El Dorado Northern Sierra Nevada Foothills, c. 5 air mi off Calif. Hwy 193, east of Georgetown; 1.7 mi. N of Wentworth Springs Road on Bottlehill Road (junction just east of Balderson Station) 973 Comment
  UCR173783  Bromus tectorum George K. Helmkamp, Elizabeth Helmkamp 2006-5-20 10512 El Dorado Northern Sierra Nevada Foothills, c. 5 air mi off Calif. Hwy 193, east of Georgetown; 1.7 mi. N of Wentworth Springs Road on Bottlehill Road (junction just east of Balderson Station) 973 Comment
  UCR173792  Cynosurus echinatus George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10595 El Dorado Northern Sierra Nevada foothills, along Hwy US-50, 0.6 mile east of White Hall 1055 Comment
  UCR173824  Lupinus bicolor George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-7 10642 El Dorado Northern Sierra Nevada foothills, hiking trail, 3.5 miles northwest of Placerville along Calif. Hwy 49 512 Comment
  UCR173825  Lotus purshianus George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-7 10643 El Dorado Northern Sierra Nevada foothills, hiking trail, 3.5 miles northwest of Placerville along Calif. Hwy 49 512 Comment
  UCR173912  Valeriana californica George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10753 El Dorado Northern Sierra Nevada Mountains, 8 miles east of Ice House Road on the road to Wright's Lake 2000 Comment
  UCR173944  Jensia rammii George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10605 El Dorado Northern Sierra Nevada foothills, Sly Park Road, 0.3 mile south of its junction with Mormon Emigrant Trail 1067 Comment
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Jan 8 2013
  UCR173945  Centaurium muehlenbergii George K. Helmkamp, Elizabeth A. Helmkamp 2006-7-1 10810 El Dorado Northern Sierra Nevada foothills, Lake Oaks Mobile Home Park, Diamond Springs 537 Comment
  UCR173957  Ribes nevadense George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-19 10736 El Dorado Northern Sierra Nevada Mountains, 5.5 miles east of Ice House Road on the road to Wright's Lake 1860 Comment
  UCR173983  Ribes nevadense George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-10 10679 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 9.1 miles north of Hwy US-50 1662 Comment
  UCR174200  Festuca ovina George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10585 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road just north of Hwy US-50 1665 Comment
  UCR174287  Pseudotsuga menziesii George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10582 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
  UCR174411  Stellaria media George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10563 El Dorado Northern Sierra Nevada foothills, along Hwy US-50 at Bridal Veil Falls, east of Pacific House 1002 Comment
  UCR175214  Cynosurus echinatus George K. Helmkamp, Elizabeth Helmkamp 2006-5-4 10296 El Dorado Northern Sierra Nevada Mountains Foothills, east end of Diamond Springs, 0.1 mile north of the junction of Pleasant Valley Road and Calif. Hwy 49 543 Comment
  UCR175340  Collomia grandiflora George K. Helmkamp, Elizabeth A. Helmkamp 2006-6-7 10655 El Dorado Northern Sierra Nevada foothills, hiking trail, 3.5 miles northwest of Placerville along Calif. Hwy 49 512 Comment
  UCR175661  Lupinus latifolius var. columbianus George K. Helmkamp, E. A. Helmkamp 2006-7-7 10831 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 3.2 miles north of Hwy US-50, northeast of Kyburz 1982 Comment
  UCR175717  Eriophyllum lanatum var. grandiflorum George K. Helmkamp, E. A. Helmkamp 2006-7-31 11055 El Dorado Northern Sierra Nevada Mountains, along Wrights Lake Road (Forest Route 4), 3.3 miles north of Hwy US-50 2049 Comment
  UCR175720  Senecio triangularis George K. Helmkamp, E. A. Helmkamp 2006-7-10 10922 El Dorado Northern Sierra Nevada Mountains, 0.3 mile west of the junction of Wright's Lake Road and the road from Ice House Reservoir 2012 Comment
  UCR175774  Microseris nutans George K. Helmkamp, E. A. Helmkamp 2006-7-31 11050 El Dorado Northern Sierra Nevada Mountains, along Wrights Lake Road (Forest Route 4), 3.3 miles north of Hwy US-50 2049 Comment
  UCR175775  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2006-7-31 11049 El Dorado Northern Sierra Nevada Mountains, along Wrights Lake Road (Forest Route 4), 3.3 miles north of Hwy US-50 2049 Comment
  UCR176012  Solidago canadensis subsp. elongata George K. Helmkamp, E. A. Helmkamp 2006-7-28 11022 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
  UCR176044  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2006-7-28 11006 El Dorado Northern Sierra Nevada Mtns, Echo Summit along Hwy US-50; at entrance to the road maintenance station 2245 Comment
  UCR176045  Scirpus microcarpus George K. Helmkamp, E. A. Helmkamp 2006-7-28 11007 El Dorado Northern Sierra Nevada Mtns, Echo Summit along Hwy US-50; at entrance to the road maintenance station 2245 Comment
  UCR176057  Carex hoodii George K. Helmkamp, E. A. Helmkamp 2006-7-12 10985 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR176236  Eriogonum nudum George K. Helmkamp, E. A. Helmkamp 2006-7-10 10940 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
  UCR176238  Osmorhiza occidentalis George K. Helmkamp, E. A. Helmkamp 2006-7-7 10850 El Dorado Northern Sierra Nevada Mtns, Wright's Lake Road, 4.1 miles north of Hwy US-50, northeast of Kyburz 2049 Comment
  UCR176317  Calyptridium monospermum George K. Helmkamp, E. A. Helmkamp 2006-7-10 10887 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
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Jun 5 2008
  UCR176352  Eriogonum marifolium George K. Helmkamp, E. A. Helmkamp 2006-7-31 11074 El Dorado Northern Sierra Nevada Mountains, along Wright's Lake Road (Forestry Route 4) at Lyons Creek, about 4 miles north of Hwy US-50 1864 Comment
  UCR176374  Lupinus fulcratus George K. Helmkamp, E. A. Helmkamp 2006-7-12 10991 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR176375  Lupinus lepidus var. confertus George K. Helmkamp, E. A. Helmkamp 2006-7-12 10992 El Dorado Northern Sierra Nevada Mtns, Sierra-at-Tahoe road (west end of Phillips), 1.5 miles south of Hwy US-50 2104 Comment
  UCR176381  Lepidium virginicum var. virginicum George K. Helmkamp, E. A. Helmkamp 2006-7-12 10962 El Dorado Northern Sierra Nevada Mtns, Mount Ralston Trail and Hwy US-50, about 0.9 mile south of Twin Bridges 1960 Comment
  UCR176389  Epilobium pallidum George K. Helmkamp, E. A. Helmkamp 2006-7-10 10897 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
  UCR176397  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2006-8-7 11170 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road 2250 Comment
  UCR176403  Senecio triangularis George K. Helmkamp, E. A. Helmkamp 2006-8-7 11164 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 21.0 miles east of its junction with Sly Park Road 2174 Comment
  UCR176422  Hypericum anagalloides George K. Helmkamp, E. A. Helmkamp 2006-7-10 10898 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
  UCR176436  Carex feta George K. Helmkamp, E. A. Helmkamp 2006-8-7 11194 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road 2250 Comment
  UCR176438  Platanthera dilatata var. leucostachys George K. Helmkamp, E. A. Helmkamp 2006-8-7 11193 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 22.1 miles east of its junction with Sly Park Road 2250 Comment
  UCR176450  Epilobium ciliatum George 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
  UCR176463  Bromus suksdorfii George K. Helmkamp, E. A. Helmkamp 2006-7-31 11076 El Dorado Northern Sierra Nevada Mountains, along Wright's Lake Road (Forestry Route 4) at Lyons Creek, about 4 miles north of Hwy US-50 1864 Comment
  UCR177009  Montia parvifolia George K. Helmkamp, Elizabeth A. Helmkamp 2006-5-31 10556 El Dorado Northern Sierra Nevada foothills, along Hwy US-50 at Bridal Veil Falls, east of Pacific House 1002 Comment
  UCR177010  Rhamnus californica George K. Helmkamp, E. A. Helmkamp 2005-7-31 9750 El Dorado Northern Sierra Nevada Foothills, 20 mi WSW of Lake Tahoe; Ice House Road, N of Calif. Highway 50 and 1.5 mi south of junction with Ice House Reservoir 1637 Comment
  UCR178651  Galium aparine George K. Helmkamp, E. A. Helmkamp 2006-9-7 11351 El Dorado Northern Sierra Nevada Mountains, Ice House Road. Robbs Valley near Robbs Hut junction 1720 Comment
  UCR178659  Gayophytum heterozygum George K. Helmkamp, E. A. Helmkamp 2006-9-7 11337 El Dorado Northern Sierra Nevada Mountains, Ice House Road about 5.5 miles north of US-50 1637 Comment
  UCR178723  Chrysolepis sempervirens George K. Helmkamp, E. A. Helmkamp 2006-9-7 11362 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 0.2 mile north of junction with Wentworth Springs Road 1620 Comment
  UCR178726B  Panicum dichotomiflorum subsp. dichotomiflorum George K. Helmkamp, E. A. Helmkamp 2006-9-2 11329 El Dorado Northern Sierra Nevada Mountains Foothills, along Georgetown Road, 0.3 mi northeast of Georgetown 840 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
  UCR179212  Lotus oblongifolius var. oblongifolius George K. Helmkamp, E. A. Helmkamp 2006-8-24 11287 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.8 miles north of Wentworth Springs Road 1616 Comment
  UCR179361  Juncus effusus var. gracilis George K. Helmkamp, E. A. Helmkamp 2006-9-20 11424 El Dorado Northern Sierra Nevada Mountains Foothills, junction of Ice House Road [at Riverton] and US-50 east of Pacific 1000 Comment
  UCR179369  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2006-8-24 11266 El Dorado Northern Sierra Nevada Mountains Foothills, Ice House Road, 2.3 miles south of Union Reservoir Road 1552 Comment
  UCR179559  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2006-10-20 11554 El Dorado Northern Sierra Nevada Mountains Foothills, 0.6 mile northwest of Pleasant Valley along Pleasant Valley Road 756 Comment
  UCR179739  Melilotus albus George K. Helmkamp, E. A. Helmkamp 2006-10-20 11545 El Dorado Northern Sierra Nevada Mountains Foothills, Bucks Bar Road, 3.9 miles south of Pleasant Valley Road, general vicinity of Somerset 625 Comment
  UCR179801  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2006-9-29 11455 El Dorado Northern Sierra Nevada Mountains Foothills, Salmon Falls Rd just west of Calif. Hwy 49 and 4 miles south of Cool 351 Comment
  UCR179809  Euphorbia nutans George K. Helmkamp, E. A. Helmkamp 2006-10-18 11532 El Dorado Northern Sierra Nevada Mountains Foothills, Diamond Springs; village along Calif. Hwy 49 south of Placerville 540 Comment
  UCR179810  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2006-10-20 11546 El Dorado Northern Sierra Nevada Mountains Foothills, Bucks Bar Road, 3.9 miles south of Pleasant Valley Road, general vicinity of Somerset 625 Comment
  UCR184785  Sisyrinchium bellum George K. Helmkamp, E. A. Helmkamp 2007-5-7 11960 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
  UCR184802  Silene californica George K. Helmkamp, E. A. Helmkamp 2007-5-9 11984 El Dorado Northern Sierra Nevada Mountains, White Meadow Road, 0.6 mile west of its junction with Ice House Road, c. 0.75 mi. NNW of Riverton 1082 Comment
  UCR184846  Laurentia fluviatilis George K. Helmkamp, E. A. Helmkamp 2007-5-11 11992 El Dorado Foothills, northern Sierra Nevada Mountains, Lake Oaks Mobile Home Park, Diamond Springs 524 Comment
  UCR184848  Pinus jeffreyi George K. Helmkamp, E. A. Helmkamp 2007-5-9 11993 El Dorado Northern Sierra Nevada Mountains, Granite Springs Road 0.4 mile east of its junction with Ice House Road, junct. about 4 miles southwest of Ice House 1707 Comment
  UCR184926  Trifolium ciliolatum George K. Helmkamp, E. A. Helmkamp 2007-5-7 11958 El Dorado Foothills, northern Sierra Nevada Mountains, Pedro Hills Road, 0.8 mile wet of Calif. Hwy 49, junction of roads 5.3 miles south of Cool 354 Comment
  UCR184928  Athysanus pusillus George K. Helmkamp, E. A. Helmkamp 2007-3-10 11602 El Dorado Northern Sierra Nevada Mountains Foothills, Rattlesnake Bar Rd, 3.0 miles southwest of Calif. Hwy 49, SW of Pilot Hill 390 Comment
  UCR185340  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2007-4-20 11777 El Dorado Foothills, Northern Sierra Nevada Mountains, along Green Valley Road at junction of Jet Quartz Creek Rd., between Four Corners and Gold Hill 410 Comment
  UCR187069  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2007-5-5 11933 El Dorado Foothills, Northern Sierra Nevada Mountains, along CA-49, 3.7 miles northwest of Placerville 549 Comment
  UCR188171  Collinsia heterophylla George K. Helmkamp, E. A. Helmkamp 2007-4-30 11895 El Dorado Foothills, Northern Sierra Nevada Mountains, hiking trail leaving from CA-49, 3.4 miles northwest of Placerville 511 Comment
  UCR188826  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2007-3-23 11690 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
  UCR188828  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2007-3-23 11694 El Dorado Northern Sierra Nevada Mountains Foothills, hills bordering the east end of Sacramento Valley. Salmon Falls Road, 4.6 miles north of Green Valley Road, above NE arm of Folsom Lake 384 Comment
  UCR188832  Scleranthus annuus George K. Helmkamp, E. A. Helmkamp 2007-3-23 11687 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
  UCR189003  Allophyllum integrifolium George K. Helmkamp, Elizabeth Helmkamp 2007-6-20 12402 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail just before its junction with Hwy CA-88 2265 Comment
  UCR189022  Pinus ponderosa George K. Helmkamp, E. A. Helmkamp 2007-8-21 12801 El Dorado Northern Sierra Nevada Mountains, Ice House Road at Mile 27.2, 1.1 miles south of Loon Lake 1899 Comment
  UCR189212  Salsola tragus George K. Helmkamp, E. A. Helmkamp 2007-9-11 12941 El Dorado Northern Sierra Nevada Mountains, along Hwy US-50 at Strawberry 1741 Comment
  UCR189457  Rudbeckia californica var. californica George K. Helmkamp, E. A. Helmkamp 2007-8-4 12707 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail at Leek Spring meadow, about 2 miles northwest of CA-88 2238 Comment
  UCR189492  Lepidium nitidum var. nitidum George K. Helmkamp, E. A. Helmkamp 2007-3-22 11674 El Dorado Foothills, Northern Sierra Nevada Mountains, along Hwy CA-16 at the west slope of Mt. Aukum and 1.7 miles north of Mt. Aukum village 584 Comment
  UCR189507  Brassica rapa George K. Helmkamp, E. A. Helmkamp 2007-3-22 11667 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
  UCR189772  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2007-8-9 12736 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 1.4 miles south of the lake 2101 Comment
  UCR190194  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2007-7-23 12583 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the crossing of Traverse Creek; about 2 miles southeast of its junction with CA-193 732 Comment
  UCR190195  Setaria pumila George K. Helmkamp, E. A. Helmkamp 2007-7-23 12590 El Dorado Foothills, northern Sierra Nevada Mountains, Traverse Creek Road at the crossing of Traverse Creek; about 2 miles southeast of its junction with CA-193 732 Comment
  UCR190306  Carex vesicaria var. vesicaria George 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
  UCR190308  Aster integrifolius George K. Helmkamp, E. A. Helmkamp 2007-8-21 12805 El Dorado Northern Sierra Nevada Mountains, unnamed lake at the junction of Angel Creek and Gerle Creek, 0.5 mile west of Wentworth Springs Road 1598 Comment
  UCR190314  Phleum pratense George K. Helmkamp, E. A. Helmkamp 2007-8-21 12784 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 21.3 miles north of CA-50 at Robbs Hut Road 2078 Comment
  UCR190315  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2007-8-21 12783 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 21.3 miles north of CA-50 at Robbs Hut Road 2078 Comment
  UCR190579  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2007-9-2 12882 El Dorado Northern Sierra Nevada Mountains Foothills, Grizzly Flat Road 5.2 miles ESE of Somerset, just west of Coles Station 957 Comment
  UCR190692  Holocarpha virgata subsp. virgata George K. Helmkamp, E. A. Helmkamp 2007-9-19 12981 El Dorado Northern Sierra Nevada Mountains Foothills, along Greenstone Road just south of its junction with US-50 (east of Shingle Springs) 427 Comment
  UCR190703  Plantago lanceolata George K. Helmkamp, E. A. Helmkamp 2007-9-22 12993 El Dorado Northern Sierra Nevada Mountains Foothills, along Pleasant Valley Road (Hwy CA-49) 0.8 mile west of its junction with Missouri Flat Road in Diamond Springs 532 Comment
  UCR192602  Myosotis laxa George K. Helmkamp, E. A. Helmkamp 2007-5-31 12231 El Dorado Northern Sierra Nevada Mountains, Forest Route 42, 1.2 miles west of its junction with Wrights Lake Road, generally between Wrights Lake and Ice House Reservoir 2021 Comment
  UCR193179  Potentilla glandulosa subsp. ashlandica George K. Helmkamp, E. A. Helmkamp 2007-6-6 12267 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 6.3 miles east of its junction with Sly Park Road 1607 Comment
  UCR193184  Allium campanulatum George K. Helmkamp, E. A. Helmkamp 2007-5-31 12243 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 1.6 miles west of its junction with Wright's Lake Road, generally between Wright's Lake and Ice House Reservoir 1851 Comment
  UCR193185  Penstemon newberryi var. newberryi George K. Helmkamp, E. A. Helmkamp 2007-5-31 12244 El Dorado Northern Sierra Nevada Mountains, Forestry Route 42, 1.6 miles west of its junction with Wright's Lake Road, generally between Wright's Lake and Ice House Reservoir 1851 Comment
  UCR193506  Ericameria arborescens George K. Helmkamp, E. A. Helmkamp 2007-9-11 12947 El Dorado Northern Sierra Nevada Mountains, Ice House Road 4.3 miles north of its junction with US-50 1393 Comment
  UCR193508  Alnus incana subsp. tenuifolia George 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
  UCR193515  Mentha X piperita George K. Helmkamp, E. A. Helmkamp 2007-9-10 12920 El Dorado Northern Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; near junction of CA-49 and Patterson Drive 530 Comment
  UCR194924  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2007-5-27 12154 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
  UCR194925  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2007-5-27 12166 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
  UCR195085  Dichelostemma volubile George K. Helmkamp, E. A. Helmkamp 2007-5-27 12162 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
  UCR196859  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2008-6-3 13557 El Dorado Sierra Nevada Mountains, Pony Express Trail, 0.8 mile east of Sly Park Road (Pollock Pines) and parallel to US-50 1213 Comment
  UCR196867  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2008-6-3 13556 El Dorado Sierra Nevada Mountains, Pony Express Trail, 0.8 mile east of Sly Park Road (Pollock Pines) and parallel to US-50 1213 Comment
  UCR196876  Fragaria vesca George K. Helmkamp, E. A. Helmkamp 2008-5-15 13444 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
  UCR196878  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2008-5-15 13443 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
  UCR196880  Potentilla glandulosa subsp. glandulosa George K. Helmkamp, E. A. Helmkamp 2008-5-15 13441 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
  UCR196937  Cynosurus echinatus George K. Helmkamp, E. A. Helmkamp 2008-6-5 13607 El Dorado Sierra Nevada Mountains Foothills, Forbay Road. 0.5 mile north of its crossing of the South Fork American River 668 Comment
  UCR196941  Cystopteris fragilis George K. Helmkamp, E. A. Helmkamp 2008-6-3 13551 El Dorado Sierra Nevada Mountains, Pony Express Trail, 0.8 mile east of Sly Park Road (Pollock Pines) and parallel to US-50 1213 Comment
  UCR197267  Ceanothus cuneatus subsp. cuneatus George K. Helmkamp, E. A. Helmkamp 2008-4-25 13300 El Dorado Sierra Nevada Mountains Foothills, junction of Meadowbrook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR197276  Arctostaphylos viscida subsp. viscida George K. Helmkamp, E. A. Helmkamp 2008-4-21 13299 El Dorado Sierra Nevada Mountains Foothills, junction of Bonetti Road and Mormon Emigrant Trail, 3.6 miles east of Sly Park Road at Jenkinson Lake 1226 Comment
  UCR197313  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2008-7-11 13769 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
  UCR197510  Eriogonum nudum var. deductum George K. Helmkamp, E. A. Helmkamp 2008-7-11 13763 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
  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
  UCR197557  Festuca trachyphylla George K. Helmkamp, E. A. Helmkamp 2008-5-28 13499 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs; Patterson Dr. and CA-49 530 Comment
  UCR197834  Myosotis laxa George K. Helmkamp, E. A. Helmkamp 2008-7-11 13761 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
  UCR198431  Dichelostemma capitatum subsp. capitatum George K. Helmkamp, E. A. Helmkamp 2008-4-30 13367 El Dorado Sierra Nevada Mountains Foothills, Bear Creek Road and Daffodil Road, 0.6 mile northeast of the junction of Bear Creek and Meadow Brook Road, south of Georgetown 723 Comment
  UCR198439  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2008-4-30 13357 El Dorado Sierra Nevada Mountains Foothills, junction of Meadow Brook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR199051  Hordeum murinum George K. Helmkamp, E. A. Helmkamp 2008-4-30 13359 El Dorado Sierra Nevada Mountains Foothills, junction of Meadow Brook and Bear Creek Roads at Traverse Creek, south of Georgetown 674 Comment
  UCR200912  Heteromeles arbutifolia George K. Helmkamp, E. A. Helmkamp 2008-9-2 14072 El Dorado Foothills, northern Sierra Nevada Mountains, Mosquito Road, 5.4 miles northeast of US-50 in Placerville 488 Comment
  UCR201577  Castilleja miniata subsp. miniata George K. Helmkamp, E. A. Helmkamp 2008-8-1 13936 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 3.8 miles north of its junction with CA-50 2076 Comment
  UCR201723  Apocynum androsaemifolium George K. Helmkamp, E. A. Helmkamp 2008-8-1 13940 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 3.8 miles north of its junction with CA-50 2076 Comment
  UCR201746  Phacelia hastata var. compacta George K. Helmkamp, E. A. Helmkamp 2008-8-1 13948 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 2.2 miles south of the entrance to Wright's Lake 2070 Comment
  UCR201748  Muhlenbergia filiformis George K. Helmkamp, E. A. Helmkamp 2008-8-1 13950 El Dorado Northern Sierra Nevada Mountains, Wright's Lake Road, 2.2 miles south of the entrance to Wright's Lake 2070 Comment
  UCR202659  Trifolium hybridum George K. Helmkamp, E. A. Helmkamp 2008-8-8 13970 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
  UCR202923  Rudbeckia californica var. californica George K. Helmkamp, E. A. Helmkamp 2008-8-8 13965 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
  UCR205999  Tragopogon dubius George K. Helmkamp, E. A. Helmkamp 2009-6-3 14876 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
  UCR206082  Monardella odoratissima subsp. pallida George K. Helmkamp, Mary Alice Barnes, Amy Barnes 2008-7-28 13918 El Dorado Northern Sierra Nevada Mountains, Wrights Lake Road, 3.4 miles north of its junction with CA Hwy 50 2043 Comment
  UCR206093  Juncus bufonius George K. Helmkamp, E. A. Helmkamp 2009-6-3 14882 El Dorado Sierra Nevada Mountains Foothills, Pony Express Trail, 0.7 mile east of its junction with Sly Park Road in Pollock Pines 851 Comment
  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
  UCR206111  Sanicula bipinnatifida George K. Helmkamp, E. A. Helmkamp 2009-6-3 14907 El Dorado Northern Sierra Nevada Mountains, Forbay Road, 4.7 miles northwest of its junction with Pony Express Trail in Pollock Pines 945 Comment
  UCR206391  Gilia capitata subsp. mediomontana George K. Helmkamp, E. A. Helmkamp 2009-5-19 14715 El Dorado Sierra Nevada Mountains Foothills, Happy Valley Road, 0.2 miles west of its junction with Happy Valley Cutoff road 561 Comment
  UCR206575  Erigeron peregrinus subsp. callianthemus George K. Helmkamp, E. A. Helmkamp 2009-7-2 15106 El Dorado Northern Sierra Nevada Mountains, Wrights road, 4.0 miles north of its junction with US-50 and beside Lyons Creek 2043 Comment
  UCR206581  Mimulus guttatus George K. Helmkamp, E. A. Helmkamp 2009-5-24 14792 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road 640 Comment
  UCR206589  Medicago orbicularis George K. Helmkamp, E. A. Helmkamp 2009-5-24 14786 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.3 miles eat of the Cosumnes River and CA-49 521 Comment
  UCR206698  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2009-3-19 14428 El Dorado Sierra Nevada Mtns. Foothills, Rock Creek Road at the Rock Creek crossing; about 3.5 miles west of Finnon Reservoir 412 Comment
  UCR206730  Nemophila maculata George K. Helmkamp, E. A. Helmkamp 2009-7-2 15105 El Dorado Northern Sierra Nevada Mountains, Wrights road, 4.0 miles north of its junction with US-50 and beside Lyons Creek 2043 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
  UCR206743  Centaurium muehlenbergii George K. Helmkamp, E. A. Helmkamp 2009-6-22 15035 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 527 Comment
  UCR206758  Philadelphus lewisii George K. Helmkamp, E. A. Helmkamp 2009-6-25 15052 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
  UCR206800  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 2009-5-24 14788 El Dorado Sierra Nevada Mountains Foothills, Sand Ridge Road, 3.0 miles west of its junction with Bucks Bar Road 640 Comment
  UCR206811  Eschscholzia George K. Helmkamp, E. A. Helmkamp 2009-3-19 14423 El Dorado Northern Sierra Nevada Mtns. Foothills, Rock Creek Road, 4.1 miles east of its junction with CA-193 485 Comment
  UCR206853  Pentagramma triangularis subsp. triangularis George K. Helmkamp, E. A. Helmkamp 2009-3-7 14353 El Dorado Northern Sierra Nevada Mtns. Foothills, along Rock Creek Road, 1.3 miles east of its junction with CA-193 427 Comment
  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
  UCR206887  Claytonia perfoliata subsp. mexicana George K. Helmkamp, E. A. Helmkamp 2009-3-7 14356 El Dorado Northern Sierra Nevada Mtns. Foothills, along Rock Creek Road, 1.3 miles east of its junction with CA-193 427 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
  UCR207021  Poa pratensis subsp. pratensis George K. Helmkamp, E. A. Helmkamp 2009-5-26 14807 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 Comment
  UCR207029  Geranium bicknellii George K. Helmkamp, E. A. Helmkamp 2009-5-26 14800 El Dorado Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 530 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
  UCR207162  Mimulus lewisii George K. Helmkamp, E. A. Helmkamp 2009-7-22 15275 El Dorado Sierra Nevada Mountains, Forestry Route 42, 1.6 miles west of its junction with Wrights Lake Road 1851 Comment
  UCR207664  Pterostegia drymarioides George K. Helmkamp, E. A. Helmkamp 2009-4-21 14534 El Dorado Sierra Nevada Mountains Foothills, Rock Creek Road, 4.2 miles west of the bridge over Rock Creek 401 Comment
  UCR207665  Lotus argophyllus var. fremontii George K. Helmkamp, E. A. Helmkamp 2009-4-21 14533 El Dorado Sierra Nevada Mountains Foothills, Rock Creek Road, 4.2 miles west of the bridge over Rock Creek 401 Comment
  UCR207846  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2009-5-14 14708 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  UCR207862  Pentagramma triangularis subsp. triangularis George K. Helmkamp, E. A. Helmkamp 2009-5-14 14689 El Dorado Sierra Nevada Mountains Foothills, hiking trail starting north of CA-49, 3.5 miles north of CA-50 in Placerville 511 Comment
  UCR208333  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2009-4-21 14546 El Dorado Sierra Nevada Mountains Foothills, along CA-193, 1.1 miles south of the South Fork American River at Chili Bar 381 Comment
  UCR208571  Ranunculus occidentalis George K. Helmkamp, E. A. Helmkamp 2009-5-4 14598 El Dorado Sierra Nevada Mountains Foothills, Sly Park Road, 0.3 miles southwest of its junction with Mormon Emigrant Trail 1067 Comment
  UCR209023  Galium porrigens var. porrigens George K. Helmkamp, E. A. Helmkamp 2009-8-19 15504 El Dorado Sierra Nevada Mountains, Ice House Road at the junction to the lower campground and boat ramp of Loon Lake 1976 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
  UCR215909  Mimulus torreyi George K. Helmkamp, E. A. Helmkamp 2009-6-29 15077 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
  UCR215910  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2009-6-29 15062 El Dorado Sierra Nevada Mountains Foothills, Ice House Road, 0.2 miles north of its junction with CA-50, c. 7.3 miles ENE (83 deg. ) of Pollock Pines 989 Comment
  UCR217145  Lotus humistratus George K. Helmkamp, E. A. Helmkamp 2010-5-14 16026 El Dorado Sierra Nevada Mountains Foothills, along CA-16 (Mt. Aukum Rd.), 1.8 miles northeast of Somerset 567 Comment
  UCR217157  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2010-5-13 16017 El Dorado Sierra Nevada Mountains Foothills, Mosquito Road, 4.4 miles northeast of its junction with US-50 in Placerville 620 Comment
  UCR217183  Trifolium glomeratum George K. Helmkamp, E. A. Helmkamp 2010-5-17 16061 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
  UCR217261  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2010-5-13 16013 El Dorado Sierra Nevada Mountains Foothills, Mosquito Road, 4.4 miles northeast of its junction with US-50 in Placerville 620 Comment
  UCR217269  Mimulus bicolor George K. Helmkamp, Mary Jane Ganive, Mary Alice Barnes 2010-6-15 16299 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, just south of Iron Mountain, c. 15 miles southeast of Sly Park Road at Jenkinson Lake 1854 Comment
  UCR217392  Calochortus albus George K. Helmkamp, Mary Alice Barnes, Mary Jane Ganive 2010-6-13 16278 El Dorado Sierra Nevada Mountains Foothills, along Forebay Road, 2.1 miles northwest of the Forebay Bridge over South Fork American River 828 Comment
  UCR217401  Vicia villosa subsp. varia George K. Helmkamp, E. A. Helmkamp 2010-6-14 16296 El Dorado Sierra Nevada Mountains Foothills, County Highway E-16, 1.3 miles southwest of Somerset 530 Comment
  UCR217857  Madia rammii George K. Helmkamp, E. A. Helmkamp 2010-5-22 16089 El Dorado Sierra Nevada Mountains Foothills, Perry Creek Road, 0.1 mile south of its junction with Slug Gulch Road, 0.4 mi. northeast of Fairplay 677 Comment
  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
  UCR217892  Castilleja attenuata George K. Helmkamp, Laurel Bezdecheck 2010-5-29 16112 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.7 rd. miles east of its junction with Perry Creek road, air 3.9 mi. ESE (98 deg. ) of Fair Play 1082 Comment
  UCR217924  Aira caryophyllea George K. Helmkamp, E. A. Helmkamp 2010-5-22 16100 El Dorado Sierra Nevada Mountains Foothills, Perry Creek Road, 0.1 mile south of its junction with Slug Gulch Road, 0.4 mi. northeast of Fairplay 677 Comment
  UCR217925  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2010-5-22 16101 El Dorado Sierra Nevada Mountains Foothills, Perry Creek Road, 0.1 mile south of its junction with Slug Gulch Road, 0.4 mi. northeast of Fairplay 677 Comment
  UCR218104  Lupinus lepidus var. sellulus George K. Helmkamp, E. A. Helmkamp 2010-7-23 16618 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
  UCR218105  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2010-7-9 16492 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
  UCR218249  Spiraea densiflora George K. Helmkamp, E. A. Helmkamp 2010-7-23 16591 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
  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
  UCR218437  Trifolium hirtum George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-6 16455 B El Dorado Sierra Nevada Mountains, Silver Fork Road, 1.9 miles south of its junction with US-50 in Kyburz 1473 Comment
  UCR218441  Solanum xanti George K. Helmkamp, E. A. Helmkamp 2010-7-9 16487 El Dorado Northern Sierra Nevada Mountains, Light Canyon Road, 0.1 mile north of its junction with Mormon Emigrant Trail (Iron Mountain Rd.), 20.5 mi. ESE (99 deg. ) of Placerville 1831 Comment
  UCR218623  Verbascum blattaria George K. Helmkamp, E. A. Helmkamp 2010-6-9 16260 El Dorado Sierra Nevada Mountains Foothills, Mother Lode Dr., 0.2 mile northeast of its junction with Pleasant Valley Road, 1.1 air mi. WNW (276 deg. ) of El Dorado 474 Comment
  UCR218751  Asclepias speciosa George K. Helmkamp, Mary Jane Ganibe, Mary Alice Barnes 2010-6-19 16307 El Dorado Sierra Nevada Mountains Foothills, junction of Perry Creek Road and Slug Gulch Road, about 1 mile northeast of Fair Play 677 Comment
  UCR218759  Brodiaea purdyi George K. Helmkamp, Mary Jane Ganibe, Mary Alice Barnes 2010-6-19 16314 El Dorado Sierra Nevada Mountains Foothills, Slug Gulch Road, 4.7 miles from its junction with Perry Creek Road 1082 Comment
  UCR218982  Pteridium aquilinum George K. Helmkamp, Laurel Bezdecheck 2010-6-19 16322 El Dorado Sierra Nevada Mountains Foothills, about 0.1 mile south of Slug Gulch Road at a point 4.7 miles east of its junction with Perry Creek Road 1021 Comment
  UCR219152  Nicotiana acuminata var. multiflora George K. Helmkamp, E. A. Helmkamp 2009-9-30 15664 El Dorado Sierra Nevada Mountains Foothills, Cedar Ravine Road at the junction with Camp Nauvoo Road, 0.1 mile south of Weber Creek and c. 2.5 mi. SE of Placerville 567 Comment
  UCR219631  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2009-10-22 15704 El Dorado Sierra Nevada Mountains Foothills, Forebay Road, 4.1 road miles north of CA-50 in Pollock Pines 1049 Comment
  UCR219639  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-10-9 15668 El Dorado Sierra Nevada Mountains Foothills, along Snows Road, 0.9 mile south of Carson Road in Camino. 0.3 mi. south of Hwy 50 933 Comment
  UCR219654  Equisetum arvense George K. Helmkamp, E. A. Helmkamp 2009-11-3 15719 El Dorado Sierra Nevada Mountains Foothills, at a bridge on Grizzly Flat Road 8.0 miles east of its junction with Hwy E-16 at Somerset 925 Comment
  UCR219655  Dittrichia graveolens George K. Helmkamp, E. A. Helmkamp 2009-10-30 15714 El Dorado Sierra Nevada Mountains Foothills, Country Club Drive 0.1 mile east of its junction with Bass Lake Road, between El Dorado Hills and Cameron Park 343 Comment
  UCR219672  Lupinus angustiflorus George K. Helmkamp, Amy Barnes, Ann Kerchner 2010-7-19 16574 A El Dorado Northern Sierra Nevada Mountains, southeast side of Wright's Lake, 5.8 mi. NE (34 deg. ) of Kyburz 2085 Comment
  UCR224226  Linanthus bicolor George K. Helmkamp, E. A. Helmkamp 2010-4-23 15921 El Dorado Sierra Nevada Mountains Foothills, along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing 200 Comment
  UCR224228  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2010-4-23 15919 El Dorado Sierra Nevada Mountains Foothills, along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing 200 Comment
  UCR224232  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2010-4-23 15914 El Dorado Sierra Nevada Mountains Foothills, along Salmon Falls Road, 5.6 miles south of its junction with CA-49 at Pilot Hill, 0.65 mi. north of the American River crossing 200 Comment
  UCR229431  Navarretia squarrosa George K. Helmkamp, E. A. Helmkamp 2011-8-11 18023 El Dorado Northern Sierra Nevada Mountains Foothills, Lake Oaks Mobile Home Park, Diamond Springs 524 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
  UCR230667  Lupinus succulentus George K. Helmkamp, E. A. Helmkamp 2011-5-8 17225 El Dorado Northern Sierra Nevada Mountains Foothills, along Pleasant Valley Road, 0.6 mile NW of Pleasant Valley 716 Comment
  UCR230719  Eriogonum wrightii var. subscaposum George K. Helmkamp, E. A. Helmkamp 2010-9-30 16983 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 4.3 miles north of its junction with Wentworth Springs Road, 0.65 mi. SSW of Loon Lake 1976 Comment
  UCR230953  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2010-8-7 16745 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
  UCR230960  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 2010-8-7 16734 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
  UCR230999  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-7-2 17623 El Dorado Northern Sierra Nevada Mountains Foothills, Forni Road near Weber Creek, 0.8 mile south of its Placerville junction with US-50 495 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
  UCR231015  Hackelia micrantha George K. Helmkamp, E. A. Helmkamp 2010-8-7 16717 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
  UCR231094  Wyethia mollis George K. Helmkamp, E. A. Helmkamp 2010-8-7 16739 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
  UCR231095  Collinsia torreyi var. wrightii George K. Helmkamp, E. A. Helmkamp 2010-8-7 16738 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.4 mile east of its junction with Mormon Emigrant Trail, at Jim Quinn Spring 2136 Comment
  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
  UCR232674  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2011-10-13 18408 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
  UCR233024  Dysphania botrys George K. Helmkamp, E. A. Helmkamp 2011-9-24 18327 El Dorado Northern Sierra Nevada Mountains, Loon Lake Road at the junction to the campground at the south end of the lake 1973 Comment
  UCR233025  Madia gracilis George K. Helmkamp, E. A. Helmkamp 2011-9-24 18317 El Dorado Northern Sierra Nevada Mountains, Loon Lake [Ice House] Road, 2.7 miles NNE of its junction with Wentworth Springs Road 1884 Comment
  UCR233108A  Cyperus eragrostis George K. Helmkamp, E. A. Helmkamp 2011-10-13 18415 El Dorado Northern Sierra Nevada Mountains Foothills, Forebay Road, 8.1 miles northwest of Pollock Pines, at north side of bridge over the South Fork American River 596 Comment
  UCR233175B  Madia exigua George K. Helmkamp, E. A. Helmkamp 2011-7-7 17666 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 5.2 miles south of its junction with Mormon Emigrant Trail 1409 Comment
  UCR233181B  Potentilla glandulosa subsp. reflexa George K. Helmkamp, E. A. Helmkamp 2011-7-7 17660 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 5.2 miles south of its junction with Mormon Emigrant Trail 1409 Comment
  UCR233189B  Collomia grandiflora George K. Helmkamp, E. A. Helmkamp 2011-7-7 17668 El Dorado Northern Sierra Nevada Mountains, Capps Crossing Road, 5.2 miles south of its junction with Mormon Emigrant Trail 1409 Comment
  UCR233214  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2010-3-20 15748 El Dorado Sierra Nevada Mountains Foothills, Marshall Road, 0.1 mile NE of its junction with CA-49 226 Comment
  UCR233294  Lessingia leptoclada George K. Helmkamp, E. A. Helmkamp 2010-9-23 16952 El Dorado Northern Sierra Nevada Mountains, Peavine Ridge Road, 2.8 miles west of Ice House Road and at the junction with Forest Route 31 and Round Tent Canyon Road 1581 Comment
  UCR233414  Cicuta douglasii George K. Helmkamp, E. A. Helmkamp 2011-9-13 18242 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
  UCR233415  Agrostis idahoensis George K. Helmkamp, E. A. Helmkamp 2011-9-13 18244 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
  UCR233433  Sambucus racemosa George K. Helmkamp, E. A. Helmkamp 2011-9-13 18251 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 22.6 miles southeast of Jenkinson's Lake, between Silver Fork Road and Hwy 88, 0.2 mi. NNE (23 deg. ) of Alder Hill 2274 Comment
  UCR234167  Bromus George K. Helmkamp, E. A. Helmkamp 2011-7-7 17643 El Dorado Northern Sierra Nevada Mountains, Capps Crossing (Bonnetti) Road, 2.8 miles south of its junction with Mormon Emigrant Trail 1297 Comment
  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
  UCR234180  Osmorhiza chilensis George K. Helmkamp, E. A. Helmkamp 2011-7-7 17636 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
  UCR235124  Ribes roezlii var. roezlii George K. Helmkamp, William Barnes 2010-9-4 16930 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring Road, 0.1 mile southwest of its upper junction with CA-88 2412 Comment
  UCR235125  Sambucus mexicana George K. Helmkamp, William Barnes 2010-9-4 16929 El Dorado Northern Sierra Nevada Mountains, Tragedy Spring Road, 0.1 mile southwest of its upper junction with CA-88 2412 Comment
  UCR235598  Sanicula bipinnatifida George K. Helmkamp, E. A. Helmkamp 2012-4-30 18882 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road, 2.4 mile north of the bridge over the South Fork American River 694 Comment
  UCR235603  Saxifraga californica George K. Helmkamp, E. A. Helmkamp 2012-4-27 18860 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road north of Placerville, at south side of the crossing of the South Fork American River 401 Comment
  UCR235622  Geranium carolinianum George K. Helmkamp, E. A. Helmkamp 2012-5-3 18904 El Dorado Northern Sierra Nevada Mountains Foothills, unnamed road leading to power plant, 0.3 mile east of South Fork American River bridge 613 Comment
  UCR235636  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2012-4-30 18876 El Dorado Northern Sierra Nevada Mountains Foothills, Mosquito Road, 0.3 mile north of the bridge over the South Fork American River 427 Comment
  UCR235638  Silene californica George K. Helmkamp, E. A. Helmkamp 2012-5-3 18887 El Dorado Northern Sierra Nevada Mountains Foothills, Forebay Road, 4.3 miles north of Pollock Pines 1046 Comment
  UCR236986  Poa secunda var. secunda George K. Helmkamp, E. A. Helmkamp 2012-5-22 19040 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.8 miles southeast of US-50 in Kyburz; opposite the entrance to China Flat Campground 1479 Comment
  UCR236988  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2012-5-22 19042 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 3.6 miles southeast of US-50 in Kyburz 1495 Comment
  UCR237036  Horkelia tridentata subsp. tridentata George K. Helmkamp, E. A. Helmkamp 2012-5-18 19009 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 0.1 mile east of Pebble Canyon Road, SE of Pollock Pines, S of US Hwy 50 1495 Comment
  UCR237038  Madia exigua George K. Helmkamp, E. A. Helmkamp 2012-5-18 19011 El Dorado Northern Sierra Nevada Mountains, along Mormon Emigrant Trail, 0.1 mile east of Pebble Canyon Road, SE of Pollock Pines, S of US Hwy 50 1495 Comment
  UCR237063  Triteleia ixioides subsp. anilina George K. Helmkamp, E. A. Helmkamp 2012-5-18 19029 El Dorado Northern Sierra Nevada Mountains Foothills, Sly Park Road (Hwy E-16) at the Fire Station, 1.3 miles southwest of the junction with Mormon Emigrant Trail 1081 Comment
  UCR240712  Tribulus terrestris George K. Helmkamp, E. A. Helmkamp 2012-9-5 19756 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
  UCR242343  Astragalus bolanderi George K. Helmkamp, E. A. Helmkamp 2010-8-20 16817 El Dorado Northern Sierra Nevada Mountains, near abandoned Iron Mountain ski resort, road spur parallel to Mormon Emigrant Trail about 0.2 mile west of its junction with CA-88 2238 Comment
  UCR242566  Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 2010-3-26 15791 El Dorado Sierra Nevada Mountains Foothills, junction of Morales Ranch Road and Sand Ridge Road, 1.2 miles east of Hwy CA-49, south of Placerville 396 Comment
  UCR242568  Veronica persica George K. Helmkamp, E. A. Helmkamp 2010-3-26 15793 El Dorado Sierra Nevada Mountains Foothills, junction of Morales Ranch Road and Sand Ridge Road, 1.2 miles east of Hwy CA-49, south of Placerville 396 Comment
  UCR242577  Penstemon laetus subsp. laetus George K. Helmkamp, E. A. Helmkamp 2011-7-7 17629 El Dorado Northern Sierra Nevada Mountains, Park Creek Road, 0.4 mile east of its junction with (Co. Rd. E16) Sly Park Road, 1.4 mi. SE (111 deg. ) of Pollock Pines 1290 Comment
  UCR242594  Sedum spathulifolium George K. Helmkamp, E. A. Helmkamp 2011-5-31 17404 El Dorado Northern Sierra Nevada Mountains Foothills, Happy Valley Cutoff Road on the southeast side of the bridge over the North Fork of the Cosumnes River, 1.4 mi. NE (61 deg. ) of Somerset 546 Comment
  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
  UCR248368  Heracleum maximum George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21034 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail at the junction with Pilliken Road 1823 Comment
  UCR248394  Gilia leptalea subsp. leptalea George K. Helmkamp, Elizabeth Helmkamp 2013-7-10 21033 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail at the junction with Pilliken Road 1823 Comment
  UCR248395  Lotus purshianus var. purshianus George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22020 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 7.4 miles east of the junction with Volcanoville Road 1320 Comment
  UCR248532  Cordylanthus tenuis subsp. tenuis George K. Helmkamp, Elizabeth Helmkamp 2013-7-25 22027 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 7.4 miles east of the junction with Volcanoville Road 1320 Comment
  UCR249569  Galium triflorum George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20856 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 0.9 mile south of its junction with US-50 in Kyburz 1364 Comment
  UCR249867  Phacelia mutabilis George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20911 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, north side of its junction with Mormon Emigrant Trail 2188 Comment
  UCR249876  Silene invisa George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20915 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, north side of its junction with Mormon Emigrant Trail 2188 Comment
  UCR249878  Monardella odoratissima George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20914 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, north side of its junction with Mormon Emigrant Trail 2188 Comment
  UCR249973  Cryptantha simulans George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20917 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, north side of its junction with Mormon Emigrant Trail 2188 Comment
  UCR250161  Arabis rectissima var. rectissima George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20870 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR250190  Chamaebatia foliolosa George K. Helmkamp, Elizabeth Helmkamp 2013-6-15 20872 El Dorado Northern Sierra Nevada Mountains, Silver Fork Road, 2.3 miles south of its junction with US-50 in Kyburz 1454 Comment
  UCR250640  Rumex acetosella George K. Helmkamp, Elizabeth Helmkamp 2013-6-19 20887 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 8.3 miles east of its junction with Hwy E-16 at Jenkinsons Lake 1456 Comment
  UCR251248  Carex subfusca George K. Helmkamp, E. A. Helmkamp 2012-7-6 19352 El Dorado Northern Sierra Nevada Mountains, Robbs Peak Road at the junction with Ice House Road, 22 miles north of US-50 2078 Comment
  UCR251262  Carex fracta George K. Helmkamp, E. A. Helmkamp 2012-7-6 19342 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
  UCR252958  Madia gracilis George K. Helmkamp, Elizabeth Helmkamp 2013-8-2 22082 El Dorado Northern Sierra Nevada Mountains, Mehrten Spring Road, 0.5 mile north of CA-88/Carson Pass Hwy 1793 Comment
  UCR253107  Elymus glaucus var. glaucus George K. Helmkamp, Elizabeth Helmkamp 2013-7-31 22055 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 3.1 miles north of Ice House Resort, 0.18 mi. north of Jones Fork Power House Rd., 1.2 mi. NW of Ice House Reservoir 1537 Comment
  UCR256826  Lupinus nanus George K. Helmkamp, Amy Barnes 2014-5-14 22873 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
  UCR256828  Osmorhiza chilensis George K. Helmkamp, Amy Barnes 2014-5-14 22875 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 4.2 miles east of the east dam of Jenkinson Lake 1247 Comment
  UCR257676  Polygonum phytolaccifolium George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19582 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 1.4 miles west of its junction with CA-88 2287 Comment
  UCR257678  Mimulus tilingii George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-8-4 19580 El Dorado Northern Sierra Nevada Mountains, Mormon Emigrant Trail, 1.4 miles west of its junction with CA-88 2287 Comment
  UCR257700  Potentilla grayi George K. Helmkamp, Amy Barnes 2012-8-19 19655 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
  UCR257702  Juncus laccatus George K. Helmkamp, Amy Barnes 2012-8-19 19670 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
  UCR257711  Poa bulbosa George K. Helmkamp, Mary Alice Barnes 2013-4-30 20435 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
  UCR257719  Lupinus nanus George K. Helmkamp, Mary Alice Barnes 2013-4-30 20434 El Dorado Northern Sierra Nevada Mountains, Capps Crossing/Bonnetti Road, 0.2 mile northwest of the bridge over Diamond /Camp Creek 1155 Comment
  UCR257791  Juncus ensifolius George K. Helmkamp, Amy Barnes 2012-8-19 19671 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
  UCR257919  Epilobium brachycarpum George K. Helmkamp, Amy Barnes 2014-7-28 22965 El Dorado Northern Sierra Nevada Mountains, Wentworth Springs Road, 1.6 miles west of Ice House Road 1863 Comment
  UCR257953  Melilotus albus George K. Helmkamp, Amy Barnes 2014-7-28 22948 El Dorado Sierra Nevada Mountains Foothills, Lake Walton beside Balderston Road; 1/4 mile south of Wentworth Springs Road 966 Comment
  UCR258117  Epilobium glaberrimum subsp. glaberrimum George K. Helmkamp, Amy Barnes 2014-8-11 23014 El Dorado Northern Sierra Nevada Mountains, north of Union Valley Reservoir, junction of Robbs Peak Road and Ice House Road 1655 Comment
  UCR258120  Glyceria elata George K. Helmkamp, Amy Barnes 2014-8-11 23008 El Dorado Northern Sierra Nevada Mountains, north of Union Valley Reservoir, junction of Robbs Peak Road and Ice House Road 1655 Comment
  UCR258197  Trifolium repens George K. Helmkamp, Amy Barnes 2014-7-28 22973 El Dorado Northern Sierra Nevada Mountains, at the junction of Wentworth Springs Road and Ice House Road 1412 Comment
  UCR258203  Aster occidentalis George K. Helmkamp, Amy Barnes 2014-7-28 22975 El Dorado Northern Sierra Nevada Mountains, at the junction of Wentworth Springs Road and Ice House Road 1412 Comment
  UCR258375  Lactuca serriola George K. Helmkamp, Amy Barnes 2014-8-11 22986 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  UCR258381  Madia gracilis George K. Helmkamp, Amy Barnes 2014-8-11 22983 El Dorado Northern Sierra Nevada Mountains, north of Union Valley Reservoir, junction of Robbs Peak Road and Ice House Road 1655 Comment
  UCR258389  Hieracium albiflorum George K. Helmkamp, Amy Barnes 2014-8-11 23002 El Dorado Northern Sierra Nevada Mountains, Ice House Road, 1.7 miles south of Crystal Basin Information Station 1610 Comment
  CDA36234  Hypericum perforatum G. K. Helmkamp, E. A. Helmkamp 2009-9-29 15656 El Dorado Sierra Nevada Mountains Foothills; Canyon Valley Rd. in the east end of Diamond Springs, c. 0.1 mile SE of Pleasant Valley Road. 0 Comment
  SBBG127560  Erythranthe bicolor G. K. Helmkamp, M. J. Ganive, M. A. Barnes 2010-6-15 16299 El Dorado Mormon Emigrant Trail, just S of Iron Mtn, ca. 15 mi SE of Sly Park Rd at Jenkinson Lake 1854 Comment
  SBBG128596  Viola sheltonii G. K. Helmkamp, E. A. Helmkamp 2012-5-18 19019 El Dorado Capps Crossing Rd (Bonnetti Rd), 0.1 mi NW of bridge over Diamond Crk, E of Jenkinson Lake and S of US Hwy 50 1186 Comment
  SBBG128600  Lupinus nanus G. K. Helmkamp, E. A. Helmkamp 2012-5-18 19010 El Dorado Mormon Emigrant Trail, 0.1 mi E of Pebble Cyn Rd, SE of Pollock Pines, S of US Hwy 50 1495 Comment
  SBBG128990  Lupinus polyphyllus var. burkei G. K. Helmkamp, E. A. Helmkamp 2011-9-13 18268 El Dorado Foster Meadow Rd, 0.6 mi N of its jct with CA-88 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
  SEINET3246210  Erigeron G. K. Helmkamp, E. A. Helmkamp 2008-1 13946 El Dorado Northern Sierra Nevada Mountains: Wright's Lake Road, 2.2 miles south of the entrance to Wright's Lake. 2070 Comment
  SEINET8043931 Image available Melica bulbosa George K. Helmkamp, E. A. Helmkamp 2012-1 El Dorado Comment
  SEINET235763  Chlorogalum pomeridianum var. pomeridianum G. K. Helmkamp, E. A. Helmkamp 1998-5-14 3626 Fresno Coast Range: Warthan Creek Canyon along CA Hwy 198 27.6 miles west of Interstate 5 west of Coalinga. 457 Comment
  SEINET235765  Galium parisiense G. K. Helmkamp, E. A. Helmkamp 1998-5-14 3632 Fresno Coast Range: Warthan Creek Canyon along CA Hwy 198 27.6 mi. W of Intersate 5 W of Coalinga. 457 Comment
  UCR107344  Veronica persica George K. Helmkamp, E. A. Helmkamp 1998-5-14 3631 Fresno Coast Range, Warthan Creek Canyon, along Calif. Hwy 198, 27.6 mi. west of Interstate 5, west of Coalinga 457 Comment
  UCR107345  Lupinus benthamii George K. Helmkamp, E. A. Helmkamp 1998-5-14 3630 Fresno Coast Range, Warthan Creek Canyon, along Calif. Hwy 198, 27.6 mi. west of Interstate 5, west of Coalinga 457 Comment
  UCR122176  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2002-4-23 7612 Fresno Central Valley; San Joaquin Valley, along CA Hwy 180, 10.8 mi west of CA Hwy 145 107 Comment
  UCR122180  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2002-4-23 7569 Fresno Central Valley; San Joaquin Valley, along CA Hwy 180, 10.8 mi west of CA Hwy 145 107 Comment
  UCR232172  Melilotus indicus George K. Helmkamp, E. A. Helmkamp 2011-10-8 18399 Glenn Northern Sacramento Valley, Road 60 (Riz Rd) at the junction with Co. Road P, 5.1 miles SE (144 deg. ) of Willows 30 Comment
  UCR232620  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2011-10-8 18370 Glenn Northern Sacramento Valley, along CA-45, 1.2 miles north of Princeton 44 Comment
  UCR122367  Abronia latifolia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7022 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  UCR122376  Cordylanthus maritimus subsp. palustris George K. Helmkamp, E. A. Helmkamp 2001-7-8 7008 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR122378  Baccharis glutinosa George K. Helmkamp, E. A. Helmkamp 2001-7-8 7006 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR122380  Jaumea carnosa George K. Helmkamp, E. A. Helmkamp 2001-7-8 7004 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UCR123956  Madia madioides George K. Helmkamp, E. A. Helmkamp 2001-7-8 6972 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
  UCR123958  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6984 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  UCR15551  Phacelia bolanderi George K. Helmkamp 1978-7-15 s.n. Humboldt Prairie Creek Redwoods State Park 305 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
  SD143710  Mohavea confertiflora G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2887 Imperial 4.7 mi. N of Winterhaven on Picacho Rd & 1 mi. NW of the All-American Canal 75 Comment
  SD143752  Eschscholzia minutiflora G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2878 Imperial 4.7 miles north of Winterhaven on Picacho Road and 1.0 mile northwest of the All-American Canal. 75 Comment
  SD143780  Eriogonum thomasii G. K. Helmkamp, E. A. Helmkamp 1998-3-18 2879 Imperial 4.7 miles north of Winterhaven, on Picacho Road and 1 mile northwest of the All American Canal. (IPB 10/07) 75 Comment
  SD143807  Chylismia claviformis subsp. peirsonii G. K. Helmkamp, E. Helmkamp 1998-1-24 2601 Imperial 4.2 miles north of Winterhaven on Picacho Rd. where the road crosses the canal. 91 Comment
  SD143900  Lupinus arizonicus G. K. Helmkamp, E. A. Helmkamp 1998-3-19 2915 Imperial Along Hwy S-24 betwn the All-American Canal & the Colorado River, 2.0 mi N of Laguna Dam. 75 Comment
  SD144023  Perityle emoryi G. Helmkamp, E. Helmkamp 1998-1-17 2553 Imperial Salton Sea about 2 miles NW of Salton City at the end of Treadwell St. 67 Comment
  UCR103342  Polygonum ramosissimum George K. Helmkamp, E. Helmkamp 1998-1-24 2622 Imperial Sonoran (Colorado) Desert, N end of Calipatria at corner of Young Rd & Calif. Hwy 111 -49 Comment
  UCR103612  Lotus salsuginosus var. brevivexillus George K. Helmkamp, E. Helmkamp 1998-1-24 2611 Imperial Sonoran (Colorado) Desert, Ogilby Rd, 14.2 mi. south of the junction with Calif. Hwy 78, vicinity of Tumco Wash 183 Comment
  UCR103644  Ditaxis neomexicana George K. Helmkamp, E. Helmkamp 1998-1-28 2632 Imperial Sonoran (Colorado) Desert, 6 mi. WNW of Ocotillo on Hwy S-2. 152 Comment
  UCR103645  Justicia californica George K. Helmkamp, E. Helmkamp 1998-1-28 2630 Imperial Sonoran (Colorado) Desert, 6 mi. WNW of Ocotillo on Hwy S-2. 152 Comment
  UCR103657  Camissonia claviformis subsp. claviformis George K. Helmkamp 1998-1-17 2552 Imperial Salton Sea, c. 2 mi NW of Salton City at the end of Treadwell St. -61 Comment
  UCR104851  Geraea canescens George K. Helmkamp, E. Helmkamp 1998-1-24 2579 Imperial Sonoran (Colorado) Desert, between Hwy I-8 & the All-American Canal across from the Brock Research Center (c. 3 mi. east of the jct of Calif. Hwy 98 with Hwy I-8) 46 Comment
  UCR104859  Geraea canescens George K. Helmkamp, E. Helmkamp 1998-1-23 2568 Imperial Sonoran (Colorado) Desert, On the W side of Hwy 86, 18.8 mi. NW of Westmorland -30 Comment
  UCR120519  Baileya pleniradiata George K. Helmkamp, E. A. Helmkamp 2001-3-17 6276 Imperial Colorado Desert., Small canyon parallel to and south of I-8, 2.1 mi east of Sidewinder Rd. 76 Comment
  UCR121151  Chenopodium album George K. Helmkamp, E. A. Helmkamp 2001-3-16 6266 Imperial Colorado Desert., Ramer Lake -46 Comment
  UCR50451  Euphorbia setiloba George K. Helmkamp 1988-2-23 31 Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 mi WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 152 Comment
  UCR50967  Lotus tomentellus George K. Helmkamp 1988-2-28 s.n. Imperial Sonoran (Colorado) Desert, at end of a dirt road c. 2 miles WSW of Crucifixion Thorn Natural Area, SE of Ocotillo and SW of Hwy 98 153 Comment
  UCR63902  Eclipta prostrata George K. Helmkamp 1989-9-17 s.n. Imperial Sonoran (Colorado) Desert, Beside Indian Pass Rd, 7.2 mi NE of Ogilby Rd (S34). 220 Comment
  UCR71846  Bacopa monnieri George K. Helmkamp 1992-4-7 92 2 Imperial Sonoran (Colorado) Desert, Colorado River 0.5 mi downstream from Gilmore's Camp (about 1.5 mi south of Walter's Camp where the old channel meets the main river) 100 Comment
  UCR79505  Symphyotrichum subulatum George K. Helmkamp 1993-11-4 X- 12 Imperial Sonoran (Colorado) Desert, Edge of the old bed of the Colorado River, 0.25 mile north of Walter's Camp, 30 miles by road south of Blythe 91 Comment
  CLARK-A1045-101  Eriogonum angulosum subsp. maculatum George K. Helmkamp 1978-5-14 Inyo Owens River 2 miles south of Little Lake; Little Lake 7.5'Q 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
  CLARK-A1045-1011  Phacelia bicolor George K. Helmkamp 1978-5-28 Inyo Bishop dry slope beside River at Pleasant Valley; ; Fish Slough 7.5' Q 1341 Comment
  CLARK-A1045-1013  Mentzelia nitens George K. Helmkamp 1978-5-28 Inyo Bishop dry slope beside River at Pleasant Valley; Fish Slough 7.5' Q Comment
  CLARK-A1045-1075  Solidago occidentalis George K. Helmkamp 1977-8-27 Inyo Bishop northwest of Bishop; saline grassland along River in Pleasant Valley; ; Fish Slough 7.5' Q 1280 Comment
  CLARK-A1045-48  Artemisia spinescens George K. Helmkamp 1977-4-23 Inyo Panamint Mountains dry flat south of Emigrant Pass; 1219 Comment
  RSA567466  Atriplex parryi George K. Helmkamp 1993-6-16 s.n. Inyo 2 miles S of Pleasant Valley campground, beside the Owens River 1280 Comment
  RSA615427  Chamaesyce micromera George K. Helmkamp 1997-9-30 2490 Inyo East side of White Mountains. 1707 Comment
  RSA615444  Chrysothamnus viscidiflorus subsp. puberulus George K. Helmkamp 1997-9-30 2468 Inyo 6.1 mi. N of CA hwy 168 on White Mtn Rd. 2622 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
  SD224794  Bouteloua barbata var. barbata G. K. Helmkamp 1997-9-30 2488 Inyo East side of White Mnts; alkaline flat running into sagebrush and rocky slopes. 1707 Comment
  SD224868  Stephanomeria pauciflora G. K. Helmkamp 1997-9-30 2503 Inyo Sierra Nevada Mountains; Lone Pine Crk 2286 Comment
  SD224929  Calystegia longipes G. K. Helmkamp 1997-9-30 2500 Inyo Sierra Nevada Mountains; Lone Pine Crk. 2286 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
  UCR100332  Machaeranthera canescens subsp. canescens George K. Helmkamp 1997-9-30 2464 Inyo White Mountains, 6.1 mi north of Calif. Hwy 168 on White Mountain Road 2622 Comment
  UCR100343  Hymenoxys cooperi var. canescens George K. Helmkamp 1997-9-30 2476 Inyo White Mountains, 6.1 mi north of Calif. Hwy 168 on White Mountain Road 2622 Comment
  UCR121937  Ptilagrostis kingii George K. Helmkamp, E. A. Helmkamp 2000-7-19 5925 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121941  Antennaria corymbosa George K. Helmkamp, E. A. Helmkamp 2000-7-19 5921 Inyo Sierra Nevada Mountains, Mosquito Flat, 0.9 mi south of Rock Creek Lake, beside Rock Creek 3140 Comment
  UCR121949  Linanthus nuttallii subsp. pubescens George K. Helmkamp, E. A. Helmkamp 1998-8-11 4306 Inyo White Mountains, 1.0 mile north of Wyman Creek Road on White Mountain Road and west of the Bristlecone Pine boundary 2988 Comment
  UCR121965  Hymenoxys lemmonii George K. Helmkamp, E. A. Helmkamp 1998-8-11 4305 Inyo White Mountains, 1.0 mile north of Wyman Creek Road on White Mountain Road and west of the Bristlecone Pine boundary 2988 Comment
  UCR123199  Bassia hyssopifolia George K. Helmkamp 1973-10-27 s.n. Inyo Owens Valley, Owens River in Pleasant Valley, northwest of Bishop. 1372 Comment
  UCR123202  Tiquilia nuttallii George K. Helmkamp, E. A. Helmkamp 1993-6-16 158 Inyo Owens Valley, 2 mi east of Pleasant Valley Campground along Chalk Bluff Road, NW of Bishop 1280 Comment
  UCR123399  Arabis holboellii var. pinetorum George K. Helmkamp, E. A. Helmkamp 1998-8-12 4383 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR123402  Potentilla gracilis var. fastigiata George K. Helmkamp, E. A. Helmkamp 1998-8-12 4376 Inyo Eastern Sierra Nevada Mountains, Rock Creek Valley, 1.0 mi south of Rock Creek Lake 3110 Comment
  UCR133349  Symphyotrichum lanceolatum var. hesperium George K. Helmkamp 1993-10-7 39- 10 Inyo Owens Valley, Pleasant Valley, edge of Owens River 1250 Comment
  UCR134463  Eriogonum umbellatum var. furcosum George K. Helmkamp, E. A. Helmkamp 1998-8-12 4364 Inyo Sierra Nevada Mountains, Independence Creek near Seven Pines and along Onion Valley Road 1799 Comment
  UCR134500  Angelica lineariloba George K. Helmkamp, E. A. Helmkamp 1998-8-10 4357 Inyo Eastern Sierra Nevada Mountains, Onion Valley, west of Independence 2805 Comment
  UCR13823  Psorothamnus polydenius George K. Helmkamp 1973-6-15 s.n. Inyo Owens Valley, Owens River at Pleasant Valley, near Mono county line 1372 Comment
  UCR13905  Epilobium glaberrimum George K. Helmkamp 1973-6-13 s.n. Inyo Owens Valley, Owens River near Pleasant Valley 1372 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
  UCR14503  Camissonia heterochroma George K. Helmkamp 1974-5-4 s.n. Inyo Owens Valley, Owens River, Pleasant Valley 1372 Comment
  UCR96431  Stipa lettermanii George K. Helmkamp 1996-9-29 1256 Inyo Mosquito Flats, c. 2 mi south of Rock Creek Lake and 11 mi south of Tom's Place 3140 Comment
  UCR99898  Chrysothamnus teretifolius George K. Helmkamp 1997-9-30 2504 Inyo Sierra Nevada Mtns., Big Pine Creek 2287 Comment
  UCR99901  Oenothera cespitosa subsp. marginata George K. Helmkamp 1997-9-30 2454 Inyo White Mtns., About 8 mi. east of US Hwy 395 on Calif. Hwy 168 out of Big Pine 2104 Comment
  UCR99909  Orobanche corymbosa George K. Helmkamp 1997-9-30 2459 Inyo White Mtns., About 8 mi. east of US Hwy 395 on Calif. Hwy 168 out of Big Pine 2104 Comment
  UCR99912  Asclepias fascicularis George K. Helmkamp 1997-9-30 2456 Inyo White Mtns., About 8 mi. east of US Hwy 395 on Calif. Hwy 168 out of Big Pine 2104 Comment
  UCR99915  Chenopodium George K. Helmkamp 1997-9-29 2450 Inyo Sierra Nevada Mountains, Onion Valley Road, 7.9 mi west of Hwy US-395 from Independence 2159 Comment
  UCR99922  Penstemon rostriflorus George K. Helmkamp 1997-9-29 2442 Inyo Sierra Nevada Mountains, Onion Valley Road, 7.9 mi west of Hwy US-395 from Independence 2159 Comment
  UCR99935  Eriogonum wrightii var. subscaposum George K. Helmkamp 1997-9-29 2428 Inyo Sierra Nevada Mtns, Onion Valley, west of Independence 2805 Comment
  CLARK-A1045-41  Gilia latifolia George K. Helmkamp 1977-4-23 Inyo Panamint Range dry wash south of Emigrant Junction; ; Emigrant Canyon 7.5' Q 914 Comment
  CLARK-A1045-7  Astragalus lentiginosus var. variabilis George K. Helmkamp 1977-4-24 Inyo Panamint Mountains west slope of Mountains; south of Emigrant Pass; 1066 Comment
  RSA567468  Cuscuta californica George K. Helmkamp 1993-6-16 s.n. Inyo 2 miles S of Pleasant Valley campground, beside the Owens River. 1280 Comment
  CLARK-A1045-1019  Lotus corniculatus George K. Helmkamp 1977-6-11 Kern Weldon roadside ditch beside farmland; ; Weldon 7.5'Q 914 Comment
  CLARK-A1045-990  Chorizanthe thurberi George K. Helmkamp 1977-6-11 B Kern Freeman Canyon Junction of State Highway 178 and 14; ; Freeman Junction 7.5'Q Comment
  RSA613706  Orthocarpus attenuatus George K. Helmkamp, E. A. Helmkamp 1998-4-9 3266 Kern Foothills of the Tehachapi Mtns, E of Arvin along CA hwy 223. 305 Comment
  RSA613714  Gilia malior George K. Helmkamp, E. A. Helmkamp 1998-4-9 3286 Kern W end of city of Mojave, along Airport Blvd. 808 Comment
  RSA613715  Astragalus didymocarpus George K. Helmkamp 1998-4-9 3285 Kern W end of city of Mojave, along Airport Blvd. 808 Comment
  SD143892  Lupinus nanus G. K. Helmkamp, E. A. Helmkamp 1998-4-9 3280 Kern Foothills of the Tehachapi Mouontains, east of Arvin along Ca. Highway 223. Comment
  UCD103057  Erodium botrys G. K. Helmkamp; E. A. Helmkamp 2001-4-27 6504 Kern Tehachapi Mtns: Hart Flat turnoff from CA-58. 884 Comment
  UCD133704  Lasthenia fremontii G. K. Helmkamp; E. A. Helmkamp 2001-4-27 6541 Kern Central CA Valley: Enos Lane Rd., 1.9 mi S of CA-119 (NE of Taft). 61 Comment
  UCR102504  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 1998-4-9 3264 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR102505  Amsinckia eastwoodiae George K. Helmkamp, E. A. Helmkamp 1998-4-9 3265 Kern Foothills of the Tehachapi Mtns., east of Arvin along Calif. Hwy 223 305 Comment
  UCR102516  Gilia tricolor subsp. diffusa George K. Helmkamp, E. A. Helmkamp 1997-3-7 1368 Kern SE of Maricopa along Western Minerals Rd near Bitter Creek 427 Comment
  UCR102518  Camissonia graciliflora George K. Helmkamp, E. A. Helmkamp 1997-3-7 1378 Kern San Emigdio Ranch, SE portion 945 Comment
  UCR122434  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2002-4-25 7626 Kern Western Foothills of Tehachapi Mountains, [c. 7 miles ENE of Arvin] along Calif. Hwy 223 [Bear Mtn Blvd.], 2.6 mi SW of its junction with Calif. Hwy 58 518 Comment
  UCR122435  Castilleja exserta subsp. exserta George K. Helmkamp, E. A. Helmkamp 2002-4-25 7624 Kern Western Foothills of Tehachapi Mountains, [c. 7 miles ENE of Arvin] along Calif. Hwy 223 [Bear Mtn Blvd.], 2.6 mi SW of its junction with Calif. Hwy 58 518 Comment
  UCR122561  Thysanocarpus curvipes George K. Helmkamp, E. A. Helmkamp 2001-4-27 6552 Kern Temblor Range, CA Hwy 58, 1.1 mi SW of the San Luis Obispo Co. line 793 Comment
  UCR123423  Ericameria linearifolia George K. Helmkamp, E. A. Helmkamp 2000-4-25 5595 Kern Tehachapi Mountains, Tehachapi Valley SE of Tehachapi Willow Springs Rd, 2.3 mi north of Oak Creek Road 1524 Comment
  UCR130961  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 1998-5-13 3548 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
  UCR130969  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 1998-5-13 3537 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
  UCR157831  Mentzelia dispersa George K. Helmkamp, E. A. Helmkamp 1998-6-29 4151 Kern Tehachapi Mtns, 2.2 miles east of the Keene turnoff from Calif. Hwy 58 on Woodford to Tehachapi road 793 Comment
  UCR24977  Galium hallii George K. Helmkamp 1981-8-6 s.n. Kern Lake-of-the-Woods, edge of the clearing at a trailer park 1646 Comment
  RSA518444  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M- 4 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  RSA518445  Eriogonum microtheca var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  RSA530489  Monardella odoratissima subsp. odoratissima George K. Helmkamp 1990-10-4 R- 22 Lassen Plumas Nat. For., S of Susanville, N of Milford Pass. 1463 Comment
  UCR67017  Bromus briziformis George K. Helmkamp 1990-9-23 D- 11 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  UCR67435  Ambrosia acanthicarpa George K. Helmkamp 1990-9-23 A- 3 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UCR67442  Artemisia cana George K. Helmkamp 1990-9-23 A- 5 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UCR67467  Eucephalus breweri George K. Helmkamp 1990-10-4 M- 6 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  SEINET2056590 Image available Chaenactis macrantha George K. Helmkamp, E. A. Helmkamp 1998-5-21 4053 Los Angeles Western Mojave Desert: Junction of Munz Ranch Rd and Lake Elizabeth Rd N of Lake Elizabeth. 1097 Comment
  UCR129533  Camissonia strigulosa George K. Helmkamp, E. A. Helmkamp 1998-5-21 4041 Los Angeles Western Mojave Desert/Transverse Range, junction of Munz Ranch Rd and Lake Elizabeth Rd., north of Lake Elizabeth 1006 Comment
  UCR130224  Lasthenia gracilis George K. Helmkamp, E. A. Helmkamp 1998-5-21 4042 Los Angeles Western Mojave Desert/Transverse Range, junction of Munz Ranch Rd and Lake Elizabeth Rd., north of Lake Elizabeth 1006 Comment
  UCR130225  Gilia aliquanta subsp. breviloba George K. Helmkamp, E. A. Helmkamp 1998-5-21 4044 Los Angeles Western Mojave Desert/Transverse Range, junction of Munz Ranch Rd and Lake Elizabeth Rd., north of Lake Elizabeth 1006 Comment
  UCR18027  Astragalus leucolobus George K. Helmkamp 1974-6-2 s.n. Los Angeles San Gabriel Mountains, Table Mountain 1982 Comment
  RSA710037  Gilia capitata subsp. abrotanifolia George K. Helmkamp, E. A. Helmkamp 2002-4-23 7531 A Madera Western Sierra Nevada foothills: 2.5 mi N of Oakhurst along CA-41Mt St. Helena 762 Comment
  UCR122413  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 2002-4-24 7535 Madera Western Sierra Nevada foothills, Auberry Rd (Rd 200/North Fork Rd.) 5.0 mi south of North Fork 503 Comment
  UCR18620  Solidago occidentalis George K. Helmkamp 1974-10-18 s.n. Madera Sierra Nevada Mtns. Foothills, Fresno River at Yosemite Forks 854 Comment
  UCR96396  Potamogeton natans George K. Helmkamp 1996-9-27 1234 Madera Satcher Lake, on the road to Devil's Post Pile. 2409 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-A1045-1425  Silene lemmonii 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-A1045-1428  Kelloggia galioides George K. Helmkamp 1977-8-5 Mariposa Sierra Nevada 2 miles east of Yosemite Creek on the way to Porcupine Flats, dry slope; ; Yosemite Falls 7.5'Q 2621 Comment
  UCR122459  Scutellaria siphocampyloides George K. Helmkamp, E. A. Helmkamp 1995-6-21 95-5- 12 Mariposa Sierra Nevada Mtns. Foothills, roadside cut along CA Hwy 49 at Hell Hollow, 1.5 mi south of the Merced River crossing 579 Comment
  UCR15416B  Trisetum projectum George K. Helmkamp 1977-8-6 s.n. Mariposa Sierra Nevada Mtns, Porcupine Flat Campground 2591 Comment
  RSA0063150  Heuchera micrantha var. hartwegii George K. Helmkamp, E. A. Helmkamp, A Kerchner 1997-6-25 2106 Mendocino State Hwy 128, 1.5 mi. SE of Boonville, in Anderson Valley. 152 Comment
  RSA0106598  Leontodon saxatilis George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2160 Mendocino Beside Glass Beach, Fort Bragg. 6 Comment
  RSA614896  Stellaria media George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-25 2107 Mendocino State Hwy 128, 1.5 miles SE of Boonville, in Anderson Valley. 152 Comment
  SEINET273102  Vicia hirsuta G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1997-6-26 2185 Mendocino Orth Coast: Sandy disturbed soil beside Big River .2mi E of US 1 S of Mendocino 6 Comment
  UCR103950  Hieracium albiflorum George K. Helmkamp, E. A. Helmkamp & A. Kerchner 1997-6-25 2131 Mendocino North Coast Range, Anderson Valley, Calif. Hwy 128, NW of Boonville 91 Comment
  UCR104882  Gilia capitata George K. Helmkamp, E. A. Helmkamp 1997-6-25 2102 Mendocino State Hwy 128, about 5 mi. NW of Cloverdale 427 Comment
  UCR106444  Erigeron glaucus George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2149 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR106445  Grindelia stricta var. platyphylla George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2148 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR106457  Chrysanthemum segetum George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1997-6-26 2150 Mendocino North Coast, Glass Beach, Fort Bragg 6 Comment
  UCR121380  Stachys rigida var. rigida George K. Helmkamp, E. A. Helmkamp 2000-6-19 5766 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR121501  Madia madioides George K. Helmkamp, E. A. Helmkamp 2000-6-19 5775 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR121509  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 2000-6-19 5781 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR121510  Scrophularia californica subsp. californica George K. Helmkamp, E. A. Helmkamp 2000-6-19 5782 Mendocino North Coast Range, Calif. Hwy 20 (Fort Bragg-Willits Rd) 6.8 mi east of US-1, southeast of Fort Bragg 152 Comment
  UCR122213  Trillium ovatum George K. Helmkamp, E. A. Helmkamp 2000-6-18 5804 Mendocino North Coast Range, 9.2 mi east of CA Hwy 1 on CA Hwy 20, southeast of Fort Bragg 305 Comment
  UCR131856  Sagina maxima subsp. crassicaulis George K. Helmkamp, E. A. Helmkamp 2000-6-18 5745 Mendocino North Coast, Glass Beach at Fort Bragg 9 Comment
  UCR131858  Achillea millefolium George K. Helmkamp, E. A. Helmkamp 2000-6-18 5738 Mendocino North Coast, Glass Beach at Fort Bragg 9 Comment
  UCR131900  Dudleya farinosa George K. Helmkamp, E. A. Helmkamp 2000-6-18 5743 Mendocino North Coast, Glass Beach at Fort Bragg 9 Comment
  UCR132130  Fuchsia magellanica George K. Helmkamp, E. A. Helmkamp 2000-6-18 5717 Mendocino North Coast, Glass Beach, Fort Bragg 9 Comment
  UCR15538  Clarkia amoena George K. Helmkamp 1978-7-16 s.n. Mendocino Leggett Summit Comment
  UCR67037  Erigeron divergens George K. Helmkamp 1990-9-23 I- 11 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
  UCR76968  Allium parvum George K. Helmkamp 1993-5-4 s.n. Modoc 25.6 miles NW of Canby along Calif. Hwy 139 1280 Comment
  CLARK-A1045-1034  Ribes montigenum George K. Helmkamp 1977-7-3 Mono Sierra Nevada ; Tioga Pass 7.5'Q 2438 Comment
  CLARK-A1045-1037  Penstemon oreocharis George K. Helmkamp 1977-7-3 Mono Sierra Nevada at Big Springs Campground; lava slope above Owens River; ; Crestview 7.5'Q 2194 Comment
  CLARK-A1045-1046  Hulsea vestita subsp. callicarpha George K. Helmkamp 1977-7-2 Mono Long Valley corner of US Highway 395 and Owens River Road; ; ; Old Mammoth 7.5'Q 2194 Comment
  CLARK-A1045-1054  Apocynum pumilum George K. Helmkamp 1977-9-1 IV Mono Antelope Valley along River, one mile north of Coleville; ; Coleville 7.5'Q 1676 Comment
  CLARK-A1045-1057  Alnus tenuifolia George K. Helmkamp 1977-9-1 IV Mono Antelope Valley along River, one mile north of Coleville; ; Coleville 7.5'Q 1676 Comment
  CLARK-A1045-1084  Tanacetum potentilloides George K. Helmkamp 1979-6-12 Mono Owens River alkaline flat near River, 4.5 miles south of Arcularius Ranch; ; Whitmore Hot Springs 7.5'Q 2133 Comment
  CLARK-A1045-1087  Thelypodium crispum George K. Helmkamp 1979-6-12 Mono Owens River alkaline soil, 4.5 miles south of Arcularius Ranch; ; Whitmore Hot Springs 7.5'Q 2133 Comment
  CLARK-A1045-1100  Phlox dispersa George K. Helmkamp 1977-7-3 Mono Sierra Nevada ; Tioga Pass 7.5'Q 3291 Comment
  CLARK-A1045-1101  Valeriana capitata subsp. californica George K. Helmkamp 1977-7-3 Mono Sierra Nevada Tioga Pass 7.5'Q Comment
  CLARK-A1045-1103  Potentilla breweri George K. Helmkamp 1977-7-3 Mono Sierra Nevada fell field beside Lake; ; Tioga Pass 7.5'Q 3108 Comment
  CLARK-A1045-1225  Allium atrorubens George K. Helmkamp 1978-5-28 Mono Lower Rock Creek along creek near old State Highway 395, between Bishop and Crowley; ; Casa Diablo Mountain 7.5'Q 1676 Comment
  CLARK-A1045-1228  Lupinus caudatus George K. Helmkamp 1978-6-11 Mono Long Valley 1.5 miles west of Benton Crossing; ; Whitmore Hot Springs 7.5'Q 2133 Comment
  CLARK-A1045-1529  Eriastrum wilcoxii George K. Helmkamp 1978-5-29 Mono East Walker River CA State Highway 182 along River [near Nevada State Line?]; Sweetwater Creek 7.5'Q Comment
  OBI39252  Carex lenticularis G. K. Helmkamp 1985-8-23 885 -39 Mono Mammoth Lakes, edge of Lake Mamie 2591 Comment
  OBI40458  Carex utriculata G. K. Helmkamp 1985-8-23 885 -40 Mono Mammoth Lakes, edge of Lake Mamie 2591 Comment
  RSA519132  Trisetum spicatum George K. Helmkamp 1990-8-3 s.n. Mono Barren, at the top of Mammoth Mountain. 3354 Comment
  RSA614913  Arnica mollis George K. Helmkamp, E. A. Helmkamp 2259 Mono South side of Lake Mary, South of Mammoth Lakes. 2744 Comment
  RSA615445  Luzula parviflora George K. Helmkamp, E. A. Helmkamp 1997-9-8 2279 Mono South side of Lake Mary, South of Mammoth Lakes. 2744 Comment
  RSA643798  Oxytheca dendroidea George K. Helmkamp 1996-10-17 1256 Mono 0.2 mi. S of Benton Hot Springs, beside CA Hwy 120. 1829 Comment
  SD129622  Solidago canadensis subsp. elongata G. Helmkamp 1989-7-31 Mono Moist medow just S of Mammoth Village and at the edge of Snow Creek. 2440 Comment
  SD143948  Sarcobatus vermiculatus G. Helmkamp, E. Helmkamp 1997-9-10 2350 Mono River Springs Lakes, 3.1 miles northeast of Highway California 120 on River Springs Road. 2285 Comment
  SD255828  Eriogonum baileyi var. baileyi George K. Helmkamp, Amy Barnes 2014-8-27 23045 Mono Northern Sierra Nevada Mountains: Monitor Pass along CA-89, 0.6 mile south of the junction with Big Springs Road (Topaz Lake 7.5'Q) 2360 Comment
  SEINET11138056  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2000-7-19 5905 Mono Eastern Sierra Nevada Mountains; Rock Creek Lake Rd., 0.8 mi north of the Inyo Co. line 2896 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
  UCR102565  Mimulus mephiticus George K. Helmkamp, E. A. Helmkamp 1997-9-10 2328 Mono Eastern Sierra Nevada/Mono Basin, Big Sand Flat along CA Hwy 120 at Pilot Spring Road, southeast of Mono Lake 2439 Comment
  UCR102596  Agoseris monticola George K. Helmkamp, E. A. Helmkamp 1997-9-11 2379 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR102598  Castilleja lemmonii George K. Helmkamp, E. A. Helmkamp 1997-9-11 2368 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR102603  Ageratina occidentalis George K. Helmkamp, E. A. Helmkamp 1997-9-11 2366 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR103814  Carex aquatilis var. aquatilis George K. Helmkamp, E. A. Helmkamp 1997-9-10 2336 Mono Eastern Sierra Nevada, Inyo National Forest at Pilot Spring, c. 5 mi. SE of Calif. Hwy 120, SE of Mono Lake & north of Mono Craters 2302 Comment
  UCR103815  Cystopteris fragilis George K. Helmkamp, E. A. Helmkamp 1997-9-10 2337 Mono Eastern Sierra Nevada, Inyo National Forest at Pilot Spring, c. 5 mi. SE of Calif. Hwy 120, SE of Mono Lake & north of Mono Craters 2302 Comment
  UCR103833  Carex hoodii George K. Helmkamp, E. A. Helmkamp 1997-9-11 2364 Mono Sierra Nevada Mtns., along Calif. Hwy 120, 0.5 mile north of Tioga Pass, Nunatak Meadow area 2957 Comment
  UCR114350  Tiquilia nuttallii George K. Helmkamp, E. A. Helmkamp 1997-9-8 2266 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR114363  Erigeron glacialis George K. Helmkamp, E. A. Helmkamp 1997-9-8 2282 Mono Sierra Nevada Mtns, south side of Lake Mary, south of Mammoth Lakes 2744 Comment
  UCR115830  Elymus trachycaulus George K. Helmkamp, E. A. Helmkamp 2000-7-18 5871 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
  UCR115856  Penstemon rydbergii var. oreocharis George K. Helmkamp, E. A. Helmkamp 2000-7-18 5856 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
  UCR121737  Tetradymia canescens George K. Helmkamp, E. A. Helmkamp 2000-7-19 5939 Mono Sierra Nevada Mountains, McGee Creek Rd about 4 mi SW of US-395 2470 Comment
  UCR121741  Penstemon rostriflorus George K. Helmkamp, E. A. Helmkamp 1998-8-11 4321 Mono White Mountains, White Mountain Road west of the turnoff to Patriarch Bristlecone Pine Grove 3445 Comment
  UCR121749  Astragalus kentrophyta var. tegetarius George K. Helmkamp, E. A. Helmkamp 1998-8-11 4318 Mono White Mountains, White Mountain Road west of the turnoff to Patriarch Bristlecone Pine Grove 3445 Comment
  UCR122321  Agrostis scabra George K. Helmkamp, E. A. Helmkamp 1997-9-10 2315 Mono Eastern Sierra Nevada Mtns./ Mono Basin, 4.9 mi. SE of Calif. Hwy 120 on Sagehen Meadows Road 2591 Comment
  UCR123119  Potentilla drummondii subsp. breweri George K. Helmkamp, E. A. Helmkamp 1998-8-13 4418 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR123391  Symphoricarpos rotundifolius var. rotundifolius George K. Helmkamp, E. A. Helmkamp 1998-8-13 4422 Mono Eastern Sierra Nevada Mountains, Nunatak trail beside CA Hwy 120, about 1 mi south of Yosemite National Park entrance kiosk 2973 Comment
  UCR123462  Eriogonum spergulinum var. reddingianum George K. Helmkamp, E. A. Helmkamp 1998-8-13 4434 Mono Eastern Sierra Nevada Mountains, Mono Craters. Pumice Mine Rd, 0.9 mi north of Devil's Punch Bowl 2439 Comment
  UCR129542  Symphoricarpos rotundifolius var. rotundifolius George K. Helmkamp, E. A. Helmkamp 2001-7-8 6836 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR130372  Senecio canus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6813 Mono Sierra Nevada Mountains, Virginia Lakes Road, 2.4 mi from US Hwy 395 2683 Comment
  UCR132156  Erigeron aphanactis var. aphanactis George K. Helmkamp, E. A. Helmkamp 1993-7-28 168 Mono Eastern Sierra Nevada /Owens Valley, Benton's Crossing of Owens River 2134 Comment
  UCR132158  Grayia spinosa George K. Helmkamp, E. A. Helmkamp 1993-7-28 170 Mono Sierra Nevada Mountains, north-facing rock wall at Long Valley Dam of Lake Crowley 2134 Comment
  UCR132284  Goodmania luteola George K. Helmkamp, E. A. Helmkamp 1993-7-28 163 Mono Eastern Sierra Nevada /Owens Valley, Benton's Crossing of Owens River 2134 Comment
  UCR14376  Rumex acetosella George K. Helmkamp 1974-7-27 s.n. Mono Tom's place on US 395 north of Bishop Comment
  UCR14396  Chrysothamnus nauseosus subsp. albicaulis George K. Helmkamp 1974-8-21 s.n. Mono Eastern Sierra Nevada Mountains, dry roadside near McGee Creek and US Hwy 395 652 Comment
  UCR14891  Agrostis exarata George K. Helmkamp 1975-9-6 s.n. Mono Owens River where the June Lake tunnel enters the valley 2104 Comment
  UCR15001  Erysimum capitatum var. capitatum George K. Helmkamp 1976-6-22 s.n. Mono Sierra Nevada Mtns., 1.5 mi east of US 395 on Mammoth turn-off 2276 Comment
  UCR15009  Poa nervosa George K. Helmkamp 1976-6-22 s.n. Mono Sierra Nevada Mtns, Mammoth Lakes Village, roadside 2393 Comment
  UCR15015  Mimulus nanus var. mephiticus George K. Helmkamp 1976-6-22 s.n. Mono Sierra Nevada Mtns., Arcularius Ranch along Owens River 2134 Comment
  UCR15404  Draba albertina George K. Helmkamp 1977-7-3 s.n. Mono Sierra Nevada Mtns, just outside of Yosemite [National Park] in the Tioga Pass area [along Hwy 120] 2988 Comment
  UCR15487  Penstemon deustus George K. Helmkamp 1978-5-29 s.n. Mono Along the East Walker River 1 mile from the Nevada border, [off Hwy 182] 1825 Comment
  UCR15559  Lupinus brevicaulis George K. Helmkamp 1978-5-29 s.n. Mono Along East Walker River, c. 2 miles south of Nevada border 1829 Comment
  UCR15933  Mentzelia congesta George K. Helmkamp 1979-6-12 s.n. Mono Owens Valley, Owens River, at the Arcularius Ranch 2134 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
  UCR258174  Glyceria elata George K. Helmkamp, Amy Barnes 2014-8-27 23068 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 4.7 miles west of the junction with CA-395 2040 Comment
  UCR258175  Epilobium ciliatum subsp. ciliatum George K. Helmkamp, Amy Barnes 2014-8-27 23067 Mono Northern Sierra Nevada Mountains, Monitor Pass along CA-89, 4.7 miles west of the junction with CA-395 2040 Comment
  UCR274883  Sphenosciadium capitellatum George K. Helmkamp 1974-7-27 s.n. Mono Owens Valley, Owens River, Big Springs 2195 Comment
  UCR275043  Solidago canadensis subsp. elongata George K. Helmkamp 2000-7-17 5819 Mono Sierra Nevada Mountains, South Twin Lake along Lake Mary Road, 3 miles SW of Mammoth Lakes 2561 Comment
  UCR40323  Cryptantha George K. Helmkamp 1985-8-22 885 35 Mono Sierra Nevada Mtns., Mammoth Village 2439 Comment
  UCR51450  Monolepis nuttalliana George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Owens River, 2.5 mi upstream from Benton Crossing 2104 Comment
  UCR51456  Polygonum aviculare George K. Helmkamp 1987-6-17 s.n. Mono Owens Valley, Owens River, 2.5 mi upstream from Benton Crossing 2104 Comment
  UCR57524  Trifolium cyathiferum 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
  UCR57544  Agrostis scabra George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR58161  Senecio hydrophilus George K. Helmkamp 1989-8-1 s.n. Mono Eastern Sierra Nevada Mountains, US Hwy 395, just south of the summit of Devil's Gate Pass 2256 Comment
  UCR59788  Artemisia douglasiana George K. Helmkamp 1989-7-31 s.n. Mono Sierra Nevada Mtns, just south of Mammoth Village [in Mammoth Lakes] and at the edge of Snow Creek [Golf Course] 2439 Comment
  UCR67409  Luzula comosa George K. Helmkamp 1990-8-2 s.n. Mono Eastern Sierra Nevada Mountains, between Mammoth and Lake Mary 2591 Comment
  UCR82194  Aquilegia formosa George K. Helmkamp 1994-7-28 103- 12 Mono Eastern Sierra Nevada Mtns., Long Valley, Crowley Lake Road at Whiskey Creek, 3 miles east of Tom's Place 2119 Comment
  UCR82212  Castilleja linariifolia George K. Helmkamp 1994-7-28 106- 2 Mono Sierra Nevada Mtns, Long Valley, along Owens River Road, NW of bridge over Hot Creek 2104 Comment
  UCR89420  Horkeliella congdonis George K. Helmkamp 1994-7-28 103- 9 Mono Eastern Sierra Nevada Mtns., Long Valley, Crowley Lake Road at Whiskey Creek, 3 miles east of Tom's Place 2119 Comment
  UCR95897  Lepidium virginicum var. virginicum George K. Helmkamp 1996-9-26 1228 Mono Sierra Nevada Mtns, city of Mammoth Lakes 2470 Comment
  UCR96383  Azolla filiculoides George K. Helmkamp 1996-9-29 1254 Mono Spring [Layton Springs] on the east side of Lake Crowley 3.5 miles SSE of Benton Crossing 2073 Comment
  HSC83089  Ericameria parryi G. K. Helmkamp 1985-8-22 88531 Mono Dry lakebed off of US Hwy 395, ca. 5 mi. N of Mammoth turn-off 2439 Comment
  OBI39255  Kelloggia galioides G. K. Helmkamp 1985-8-20 885 -10 Mono Along the Owens River at Big Springs campground, 7 airline mi NE of Mammoth Lakes, above Arcularius Ranch 2225 Comment
  RSA518412  Rorippa curvipes var. truncata George K. Helmkamp 1990-8-2 s.n. Mono Between Mammoth and Lake Mary. 2591 Comment
  RSA630319  Eriogonum baileyi var. baileyi George K. Helmkamp 1995-9-23 4 -2 Mono Beside Bodie Road, 3 miles southwest of Bodie State Historic Park, at Murphy Spring 2500 Comment
  UCSB37384  Leptosiphon nuttallii subsp. nuttallii Helmkamp, G. 1973-6-14 Mono Hot Creek Road, ca. 5 mi. E of US 395 Comment
  CAS-BOT-BC217440  Galium californicum subsp. luciense G. K. Helmkamp; E. A. Helmkamp 1999-5-21 4862 Monterey Willow Crk. Rd., 6.3 mi. E of CA-1 N of Gorda, Santa Lucia Mtns. 1036 Comment
  RSA709023  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2005-5-12 9433 Monterey Central Coast Ranges: 8 mi west of US-101 on Hwy CA-G-18 in Hames Valley. 341 Comment
  SEINET12808616  Collinsia heterophylla George K. Helmkamp, Elizabeth Helmkamp 2005-1 9440 Monterey Central Coast Ranges: 8 mi W of US 101 on Hwy CA-G-18 in Hames Valley. Alt. 341m/1120 ft. 327 Comment
  UCR101783  Amsinckia lycopsoides George K. Helmkamp, E. A. Helmkamp 1998-5-14 3654 Monterey Coast Range, Peachtree Valley, along Calif. Hwy 198, 6.2 mi. west of the Fresno/Monterey County lines. 503 Comment
  UCR104964  Hierochloe occidentalis George K. Helmkamp, E. A. Helmkamp 1997-6-23 2084 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
  UCR107290  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 1998-5-14 3646 Monterey Coast Range, Peachtree Valley, along Calif. Hwy 198, 6.2 mi. west of the Fresno/Monterey County lines. 503 Comment
  UCR118268  Plectritis ciliosa subsp. insignis George K. Helmkamp, E. A. Helmkamp 2000-4-24 5514 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
  UCR123082  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 2002-4-19 7490 Monterey Santa Lucia Mountains, Los Burros Rd. (N of Gorda); 2.4 mi east of Calif. Hwy 1 473 Comment
  UCR127071  Spergularia rubra George K. Helmkamp, E. A. Helmkamp 1998-5-19 3856 Monterey Reservoir area., San Antonio Rd 0.7 mi north of G-14 (Interlake Rd between San Antonio and Nacimiento reservoirs) 335 Comment
  UCR127079  Castilleja exserta subsp. exserta George K. Helmkamp, E. A. Helmkamp 1998-5-19 3835 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127084  Sidalcea malviflora subsp. californica George K. Helmkamp, E. A. Helmkamp 1998-5-19 3847 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127085  Clarkia epilobioides George K. Helmkamp, E. A. Helmkamp 1998-5-19 3855 Monterey Reservoir area., San Antonio Rd 0.7 mi north of G-14 (Interlake Rd between San Antonio and Nacimiento reservoirs) 335 Comment
  UCR127137  Lupinus albifrons var. collinus George K. Helmkamp, E. A. Helmkamp 1998-5-19 3832 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR127141  Amsinckia menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 1998-5-19 3840 Monterey Salinas Valley, 3.7 mi south of Lockwood on G-14, Interlake Road near northwest end of Lake San Antonio 320 Comment
  UCR129962  Calandrinia ciliata George K. Helmkamp, E. A. Helmkamp 2000-4-24 5546 Monterey Outer south coast ranges., Nacimiento Road, 10.4 mi west of Mission Road, just south of Mission San Antonio 457 Comment
  UCR130617  Lupinus albifrons var. albifrons George K. Helmkamp, E. A. Helmkamp 1999-5-21 4856 Monterey Santa Lucia Mountains, Willow Creek Rd 1.7 mi east of Calif. Hwy 1 north of Gorda 290 Comment
  UCR130620  Polystichum munitum George K. Helmkamp, E. A. Helmkamp 1999-5-21 4849 Monterey Santa Lucia Mountains, Willow Creek Rd 1.7 mi east of Calif. Hwy 1 north of Gorda 290 Comment
  UCR145537  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, E. A. Helmkamp 2000-4-24 5483 A Monterey Central Outer Coast Range, Nacimiento Road, 12 mi north of Gorda and 3.8 mi east of CA Hwy 1, ridge above Kirk Creek 305 Comment
  UCR145549  Gilia angelensis George K. Helmkamp, E. A. Helmkamp 2000-4-24 5493 Monterey Central Outer Coast Range, Nacimiento Road, 12 mi north of Gorda and 3.8 mi east of CA Hwy 1, ridge above Kirk Creek 305 Comment
  UCR145620  Melica imperfecta George K. Helmkamp, E. A. Helmkamp 2000-4-24 5484 A Monterey Central Outer Coast Range, Nacimiento Road, 12 mi north of Gorda and 3.8 mi east of CA Hwy 1, ridge above Kirk Creek 305 Comment
  UCR158821  Prunus ilicifolia subsp. ilicifolia George K. Helmkamp, E. A. Helmkamp 2005-5-12 9443 Monterey Central Coast Ranges, 8 mi west of US-101 on Calif. Highway G18 in Hames Valley 341 Comment
  UCR158937  Clarkia unguiculata George K. Helmkamp, E. A. Helmkamp 2005-5-12 9433 Monterey Central Coast Ranges, 8 mi west of US-101 on Calif. Highway G18 in Hames Valley 341 Comment
  UCR159377  Sidalcea malviflora George K. Helmkamp, E. A. Helmkamp 2005-5-12 9454 Monterey Central Coast Ranges, WNW of Lockwood along Highway G-14; mile-28 on the road 329 Comment
  UCR160762  Achillea millefolium George K. Helmkamp, E. A. Helmkamp 2005-6-5 9520 Monterey Central Coast, west edge of Santa Lucia Range, overlooking Pacific Ocean, 0.4 mi east of Calif. Hwy 1 along Los Burros Road 113 Comment
  UCR161663  Trifolium dubium George K. Helmkamp, E. A. Helmkamp 2005-5-17 9493 Monterey Central Coast, 0.9 mi south of Plaskett (N of Gorda); along Calif. Highway 1 90 Comment
  UCR67401  Centranthus ruber George K. Helmkamp 1990-9-5 s.n. Monterey Central Coast, 2 miles north of Gorda 46 Comment
  JEPS119431  Madia citrigracilis G. K. Helmkamp, E. A. Helmkamp 2011-7-17 17763 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 deg. ) of Peardale Comment
  RSA0012016  Anaphalis margaritacea George K. Helmkamp, E. A. Helmkamp 2010-8-26 16849 Nevada Donner Pass Road, 0.8 mile west of its junction with Hwy. I-80, 0.65 mi. NE (62 deg.) of Kingvale. 1921 Comment
  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
  RSA0012030  Agrostis stolonifera George K. Helmkamp, E. A. Helmkamp 2010-8-26 16851 Nevada Donner Pass Road, 0.8 mile west of its junction with Hwy. I-80, 0.65 mi. NE (62 deg ) of Kingvale 1921 Comment
  RSA0025305  Perideridia parishii subsp. latifolia George K. Helmkamp, E. Helmkamp 2007-7-27 12600 Nevada Bowman Lake Road, 3.9 miles north of its junction with CA-20. In the vicinity of Fuller Lake. 1668 Comment
  RSA0085001  Streptanthus tortuosus subsp. truei George K. Helmkamp, E. A. Helmkamp 2011-6-9 17516 Nevada Northern Sierra Nevada Mountains Foothills: Tyler Foote Crossing Road, 3.3 miles north of its junction with Grizzly Hill Road, NE of North Columbia near the Sierra County line/Middle Yuba River. 878 Comment
  RSA725803  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 535 Comment
  RSA789800  Navarretia leucocephala subsp. minima George K. Helmkamp, E. A. Helmkamp 2011-7-26 17877 Nevada along CA Hwy 20, 0.8 mi. east of Bowman Lake Road, 1.23 mi. NE (50 deg.) of Emigrant Gap and 0.35 mi. N of I-80. 1541 Comment
  RSA794536  Chlorogalum pomeridianum var. pomeridianum George K. Helmkamp, E. A. Helmkamp 2011-7-17 17750 Nevada You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 deg ) of Peardale 686 Comment
  RSA794538  Hypericum concinnum George K. Helmkamp, E. A. Helmkamp 2011-7-17 17752 Nevada You Bet Road, 2.6 miles east of its junction with CA-174 and at the crossing over Greenhorn Creek, 3.18 miles ESE (95 deg.) of Peardale 686 Comment
  SD239874  Navarretia leptalea subsp. leptalea G. K. Helmkamp, E. A. Helmkamp 2007-8-1 12664 Nevada Northern Sierra Nevada Mountains: near Camp Spaulding; along Lake Spaulding Road 0.4 mile north of its junction with CA-20 (Blue Canyon 7.5'Q) 1573 Comment
  SD239903  Tellima grandiflora George K. Helmkamp, E. A. Helmkamp 2011-6-9 17497 Nevada Northern Sierra Nevada Mountains Foothills: Tyler Foote Crossing Road, 1.6 miles north of its junction with Grizzly Hill Road, generally north of North Columbia (Pike 7.5'Q) 929 Comment
  SD243114  Campanula prenanthoides George K. Helmkamp, E. A. Helmkamp 2011-9-30 18356 Nevada Northern Sierra Nevada Mountains: Mule Spring Road off Lowell Hill Road, 6.2 miles northeast of Lowell Hill junction with Dutch Flat X Road at lower end of Bear River Reservoir (Dutch Flat 7.5'Q) 1189 Comment
  SEINET11261860  Penstemon azureus var. azureus George Helmkamp, E. A. Helmkamp 2011-7-26 17856 Nevada Northern Sierra Nevada Mountains: Emigrant Gap Road, .1 mile west of its junction with US-80, .65 mi. NE (651/4) of Emigrant Gap (Blue Canyon 7.5' Q.); 0 1590 Comment
  SEINET1907234  Penstemon azureus var. azureus G. K. Helmkamp, E. A. Helmkamp 2006-1 11249 Nevada Northern Sierra Nevada Mtns: about 0.7 mile east of Donner Pass along Donner Pass Rd. 2041 Comment
  SEINET238567  Carex illota G. K. Helmkamp, E. A. Helmkamp; A. Kerchner 1999-6-29 5029 Nevada Northern Sierra Nevada Range: N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon. 2134 Comment
  SEINET4560802  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2011-1 17783 Nevada Northern Sierra Nevada Mountain Foothills: You Bet Road just northeast of its junction with CA-174, 1.25 mi. east (91 degrees) of Peardale 778 Comment
  SEINET4691722  Chenopodium botrys George K. Helmkamp, E. A. Helmkamp 2011-1 18361 Nevada Northern Sierra Nevada Mountains: small, open flat along CA-20, 2.6 miles west of its junction with Lowell Hill Road. 1581 Comment
  SEINET4691850  Dicentra formosa George K. Helmkamp, E. A. Helmkamp 2011-1 17508 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
  UCD100013  Polygonum aviculare subsp. depressum G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11228 Nevada Northern Sierra Nevada Mountains: just south of I-80 on Lake Valley Rd. 1754 Comment
  UCD106272  Lupinus albifrons var. collinus G. K. Helmkamp; E. A. Helmkamp 2006-5-11 10416 Nevada Northern Sierra Nevada Foothills: along CA Hwy 49, 2.1 mi. N of the South Yuba River bridge. 534 Comment
  UCD117485  Arbutus menziesii G. K. Helmkamp; E. A. Helmkamp 2007-3-31 11728 Nevada Northern Sierra Nevada Mountains: Just south of the crossing of CA-49 over the South Yuba River. 390 Comment
  UCD121241  Apocynum androsaemifolium G. K. Helmkamp; E. A. Helmkamp 2006-8-14 11245 Nevada Northern Sierra Nevada Mtns: aboout 7 mile east of Donner Pass along Donner Pass Rd. (Norden 7.5'Q). 2041 Comment
  UCD132411  Gnaphalium palustre G. K. Helmkamp; E. A. Helmkamp 2007-7-27 12612 Nevada Northern Sierra Nevada Mountains: Bowman Lake Road, 11.2 miles north of its junction with CA-20. 1793 Comment
  UCD135930  Solidago elongata G. K. Helmkamp; E. A. Helmkamp 2006-10-10 11521 Nevada Northern Sierra Mountains Foothills: along Hwy. CA-49, 5.8 miles NNW of Nevada City. 750 Comment
  UCR121451  Phlox diffusa George K. Helmkamp, E. A. Helmkamp 1999-6-30 5076 Nevada Northern Sierra Nevada Range, Tahoe Nat. Forest, Donner Pass Rd. (=Hwy 40), 2.2 mi. west of Lake Donner. 1997 Comment
  UCR121459  Trifolium longipes subsp. elmeri George K. Helmkamp 1999-6-30 5104 Nevada Northern Sierra Nevada Range, Truckee, 1-2 mi. east of Donner Lake. 1540 Comment
  UCR174402A  Potentilla glandulosa George K. Helmkamp, Elizabeth Helmkamp 2006-5-11 10418 Nevada Northern Sierra Nevada Foothills, along Calif. Hwy 49, 2.1 mi. N of the South Yuba River bridge 534 Comment
  UCR176203  Sidalcea glaucescens George K. Helmkamp, E. A. Helmkamp 2006-8-14 11220 Nevada Northern Sierra Nevada Mtns, just south of I-80 on Lake Valley Rd 1755 Comment
  UCR179309  Quercus kelloggii George K. Helmkamp, E. A. Helmkamp 2006-10-10 11516 Nevada Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49, 5.8 miles NNW of Nevada City 750 Comment
  UCR179310  Stephanomeria virgata subsp. pleurocarpa George K. Helmkamp, E. A. Helmkamp 2006-10-10 11515 Nevada Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49, 5.8 miles NNW of Nevada City 750 Comment
  UCR179327  Mimulus aurantiacus George K. Helmkamp, E. A. Helmkamp 2006-10-10 11506 Nevada Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49, 10.4 miles north of the crossing of the South Yuba River 543 Comment
  UCR188871  Poa bulbosa George K. Helmkamp, E. A. Helmkamp 2007-3-31 11718 Nevada Foothills, Northern Sierra Nevada Mountains, along CA-49 at Lime Kiln Rd., 0.6 mi north of Cherry Creek Acres 549 Comment
  UCR189036  Spiranthes porrifolia George K. Helmkamp, E. A. Helmkamp 2007-7-27 12602 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
  UCR189038  Perideridia lemmonii George K. Helmkamp, E. A. Helmkamp 2007-7-27 12599 A 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
  UCR193285  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2007-6-12 12354 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 2.9 miles north of its junction with Hwy CA-20; just north of the South Yuba River 1451 Comment
  UCR194883  Triteleia George K. Helmkamp, E. A. Helmkamp 2007-5-26 12107 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 1.7 miles northeast of CA-49 617 Comment
  UCR200888  Epilobium densiflorum George K. Helmkamp, E. A. Helmkamp 2008-9-18 14126 Nevada Foothills, northern Sierra Nevada Mountains, Tyler-Foote Road 5.0 miles northeast of the junction with CA-49 777 Comment
  UCR229472  Heterocodon rariflorum George K. Helmkamp, E. A. Helmkamp 2011-7-26 17874 A Nevada Northern Sierra Nevada Mountains, along CA Hwy 20, 0.8 mi. east of Bowman Lake Road, 1.23 mi. NE (50 deg. ) of Emigrant Gap and 0.35 mi. N of I-80 1541 Comment
  UCR229564  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2011-7-26 17878 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
  UCR229565  Navarretia leucocephala subsp. minima George K. Helmkamp, E. A. Helmkamp 2011-7-26 17877 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
  UCR230629  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2011-5-26 17390 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
  UCR230987  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2011-6-9 17530 Nevada Northern Sierra Nevada Mountains Foothills, in the village of North Columbia 919 Comment
  UCR232617  Chenopodium atrovirens George K. Helmkamp, E. A. Helmkamp 2011-9-30 18366 Nevada Northern Sierra Nevada Mountains, small, open flat along CA-20, 2.6 miles west of its junction with Lowell Hill Road 1581 Comment
  UCR232652  Centaurium muehlenbergii George K. Helmkamp, E. A. Helmkamp 2011-9-30 18349 Nevada Northern Sierra Nevada Mountains Foothills, Dutch Flat X Road (extension of Diggins Hill Road), 3.1 miles northeast of Dutch Flat and north of the Bear River Reservoir 854 Comment
  UCR233106A  Lewisia cantelovii George K. Helmkamp, E. A. Helmkamp 2011-6-9 17517 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
  UCR233114A  Penstemon laetus subsp. laetus George K. Helmkamp, E. A. Helmkamp 2011-7-17 17754 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
  UCR233115A  Mimulus torreyi George K. Helmkamp, E. A. Helmkamp 2011-7-17 17756 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
  UCR233174B  Chamaebatia foliolosa George K. Helmkamp, E. A. Helmkamp 2011-6-9 17513 Nevada Northern Sierra Nevada Mountains Foothills, Tyler Foote Crossing Road, 3.3 miles north of its junction with Grizzly Hill Road, NE of North Columbia near the Sierra Co. line/Middle Yuba River 878 Comment
  UCR233627  Daucus carota George K. Helmkamp, E. A. Helmkamp 2011-7-17 17782 Nevada Northern Sierra Nevada Mountains Foothills, You Bet Road, 2.0 miles east of its junction with CA-174, 0.6 mile west of the crossing over Greenhorn Creek, 2.7 miles ESE (95 deg. ) of Peardale 762 Comment
  UCR233661  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2011-7-17 17774 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
  UCR233669  Nemophila parviflora var. austiniae George K. Helmkamp, E. A. Helmkamp 2011-6-9 17506 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
  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
  UCR234630  Eriophyllum lanatum var. achilleoides George K. Helmkamp, E. A. Helmkamp 2011-6-2 17448 Nevada Northern Sierra Nevada Mountains Foothills, 2.25 miles SW (226 deg. ) of French Corral, along Pleasant Valley Road, 1.1 miles south of its crossing of the South Fork Yuba River 255 Comment
  UCR234656  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2011-6-2 17431 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 3.3 miles west of its junction with CA-49 in Grass Valley 627 Comment
  UCR234658  Sidalcea George K. Helmkamp, E. A. Helmkamp 2010-8-26 16840 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
  UCR237022  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2012-4-21 18805 Nevada Northern Sierra Nevada Mountains Foothills, junction of Lime Kiln Road and Wolf Road, 13.5 miles NNW (349 deg. ) of Auburn 515 Comment
  UCR237101  Vulpia bromoides George K. Helmkamp, E. A. Helmkamp 2012-4-21 18818 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
  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
  UCR241746  Alisma lanceolatum George K. Helmkamp, E. A. Helmkamp 2012-10-9 20002 Nevada Northern Sierra Nevada Mountains Foothills, Higgins Corner; Combie Road, 0.1 mile east of its junction with CA-49, between Auburn and Grass Valley 445 Comment
  UCR241748  Gayophytum George K. Helmkamp, E. A. Helmkamp 2012-9-25 19926 Nevada Northern Sierra Nevada Mountains, Bowman Lake Road, 1.2 miles north of CA-20, N of I-80 between Grass Valley and Truckee 1427 Comment
  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
  UCR242595  Sidalcea malviflora subsp. asprella George K. Helmkamp, E. A. Helmkamp 2011-6-2 17413 Nevada Northern Sierra Nevada Mountains Foothills, Along CA-20, 1.5 miles west of its junction with CA-49 in Grass Valley 727 Comment
  UCR249949  Trifolium subterraneum George K. Helmkamp, Elizabeth Helmkamp 2013-4-13 20322 Nevada Northern Sierra Nevada Mountains Foothills, Wolf Road, 1.6 miles northwest of its junction with CA-49 405 Comment
  UCR253630  Stellaria media George K. Helmkamp 2014-3-11 22547 Nevada Sierra Nevada Mountains Foothills, junction of Wolf Road and Lime Kiln Road, W of Hwy 49 & c. 13 miles N of Auburn 518 Comment
  UCR256635  Dittrichia graveolens George K. Helmkamp, Elizabeth Helmkamp 2013-10-10 22396 Nevada Sierra Nevada Mountains Foothills, Along CA-49, c. 0.3 mile north of the junction with Gautier Road and at the side road #20456 441 Comment
  UCR256651  Calycadenia oppositifolia George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20722 Nevada Northern Sierra Nevada Mountains Foothills, along Hwy CA-20, 3.5 miles west of CA-49 in Grass Valley 623 Comment
  UCR256659  Festuca perennis George K. Helmkamp, Elizabeth Helmkamp 2013-5-30 20726 Nevada Northern Sierra Nevada Mountains Foothills, along Hwy CA-20, 3.5 miles west of CA-49 in Grass Valley 623 Comment
  UCR257156  Plagiobothrys fulvus var. campestris George K. Helmkamp 2014-4-17 22742 Nevada Northern Sierra Nevada Mountains Foothills, along CA-120, 2.3 miles west of its junction with CA-49 in Grass Valley 729 Comment
  UCR257158  Pinus ponderosa George K. Helmkamp, Elizabeth Helmkamp 2013-10-10 22387 Nevada Sierra Nevada Mountains Foothills, junction of Combie Road and Timber Ridge Dr. southeast of Higgins Corner near Lake of the Pines 456 Comment
  UCR258189  Juncus ensifolius George K. Helmkamp, Elizabeth Helmkamp 2012-10-16 20024 A Nevada Sierra Nevada Mountains Foothills, Robles Dr., south of the junction of Combie Road and Darkhorse Drive, 2.8 air miles SE (124 deg. ) of Higgins Corner 445 Comment
  UCR116013  Pulicaria paludosa George K. Helmkamp, E. A. Helmkamp 2000-10-18 6230 Orange Newport Bay, South side of the back bay. 6 Comment
  UCR97884  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 1997-4-24 1648 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, 1.6 mi. SE of Ortega Hwy (Calif. Hwy 74) on Rd. 7-S14 549 Comment
  UCR98133  Nemophila pedunculata George K. Helmkamp, E. A. Helmkamp 1997-4-24 1661 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, 1.6 mi. SE of Ortega Hwy (Calif. Hwy 74) on Rd. 7-S14 549 Comment
  CAS-BOT-BC126721  Calycadenia multiglandulosa G. K. Helmkamp; E. A. Helmkamp 2010-6-26 16368 Placer Sierra Nevada Mountains Foothills: junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  CAS-BOT-BC228606  Triteleia laxa George K. Helmkamp; E. A. Helmkamp 2011-5-6 17220 Placer Eastern Edge of Sacramento Valley: Camp Far West Road, 0.1 mile west of its junction with McCourtney Road, c. 6.3 mi. NE (67 deg. ) of Wheatland 58 Comment
  CAS-BOT-BC248300  Rubus laciniatus George K. Helmkamp; E. A. Helmkamp 2010-8-11 16752 Placer Northern Sierra Nevada Mountains: Finning Mill Road, 1.2 miles north of Forest Hill Road, at the crossing of Mill Creek 1085 Comment
  CAS-BOT-BC248301  Geranium molle George K. Helmkamp; E. A. Helmkamp 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
  CAS-BOT-BC249046  Lupinus arbustus George K. Helmkamp; E. A. Helmkamp 2010-7-28 16673 Placer Northern Sierra Nevada Mountains: Soda Springs Road, 0.3 mile north of its junction with Forest Hill Road at Robinson Flat 2024 Comment
  CAS-BOT-BC249054  Senecio triangularis George K. Helmkamp; E. A. Helmkamp 2010-8-14 16795 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
  CAS-BOT-BC261664  Plagiobothrys undulatus George K. Helmkamp; E. A. Helmkamp 2011-5-12 17255 Placer Southern Sacramento Valley: south of Lincoln along Athens Ave., 1.6 mile east of Fiddyment Road, 0.6 mi. west of Industrial Ave. 41 Comment
  CAS-BOT-BC334223  Lilium washingtonianum var. washingtonianum George K. Helmkamp; Mary Alice Barnes; E. A. Helmkamp 2012-9-8 19796 Placer Northern Sierra Nevada Mountains: Forest Hill Road at junction with Hidden Treasure Road, c. 0.4 mile NE of Sugar Pine Road 1384 Comment
  CAS-BOT-BC433220  Lamium purpureum George K. Helmkamp; Elizabeth Helmkamp 2013-4-13 20333 Placer Northern Sierra Nevada Mountains Foothills: Cramer Road at the junction with CA-49, north of Auburn. 412 Comment
  OBI82142  Lupinus albifrons var. collinus George K. Helmkamp, Mary Alice Barnes 2013-5-3 20486 Placer Northern Sierra Nevada Mountains Foothills: Mosquito Ridge Road, 4.7 miles south of Forest Hill Road, 1.8 mi. east (92 deg. ) of Foresthill. 829 Comment
  RSA0012085  Linanthus ciliatus George K. Helmkamp, E. A. Helmkamp 2011-7-26 17892 Placer 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
  RSA0028446  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2010-4-23 15904 Placer along Salmon Falls Road, at Miners Valley Rd., 4.5 miles south of junction with CA-49 at Pilot Hill. 287 Comment
  RSA0037371  Allophyllum gilioides subsp. gilioides George K. Helmkamp, Mary Alice Barnes 2013-5-3 20504 Placer Mosquito Ridge Road at the north side of the bridge over West Fork of North Fork American River, 5.2 mi. east (87 ) of Forest Hill 422 Comment
  RSA0039066  Lotus humistratus George K. Helmkamp, Mary Alice Barnes 2013-4-18 20345 Placer Yankee Jim Road, 0.9 mile east of its junction with Canyon Way, 4.4 miles SE (167 ) of Colfax 561 Comment
  RSA0039073  Phacelia imbricata subsp. imbricata George K. Helmkamp, Mary Alice Barnes 2013-4-18 20369 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
  RSA0055953  Lupinus microcarpus var. densiflorus George K. Helmkamp, Amy Barnes 2014-4-23 22771 Placer Sierra Nevada Mountain Foothills: Old Forest Hill Road, 0.4 mile northeast of its junction with CA-49 at North Fork American River. 290 Comment
  RSA0062468  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2012-9-25 19916 Placer Junction of Nyack Road and I-80 in the Emigrant Gap area. 1652 Comment
  RSA714091  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2005-10-1 9988 Placer Northern Sierra Nevada Mts.: NW of Lake Tahoe; Junction of Bear Creek Road and Big John Drive (ca. 2.2 miles west of CA Highway 89 and just south of Alpine Meadows Road) 2015 Comment
  RSA715286  Aster George K. Helmkamp, E. A. Helmkamp 2005-9-30 9948 Placer Northern High Sierra Mountains: junction of Chalet and Alpine Meadows Roads west of CA-89 (near Alpine ski area) 2081 Comment
  RSA739714  Galium parisiense George K. Helmkamp, E. A. Helmkamp 2007-5-23 12064 Placer Northern Sierra Nevada Mtns.: Humbug Canyon Road, 0.2 miles NW of Forest Hill Rd., generally SW of Westville 1576 Comment
  RSA739715  Ceanothus integerrimus George K. Helmkamp, E. A. Helmkamp 2007-5-23 12066 Placer Northern Sierra Nevada Mtns.: Sugar Pine Road, 0.2 miles NW of Forest Hill Road 1360 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
  RSA757271  Mimulus torreyi George K. Helmkamp, E. A. Helmkamp 2009-7-16 15196 Placer Foresthill Road, 20.3 miles northeast of the city of Foresthill. 1704 Comment
  SBBG120612  Philadelphus lewisii G. K. Helmkamp with E. A. Helmkamp 2006-6-14 10705 Placer 0.2 mi N of Forest Hill Rd on unnamed rd to Lake Clementine (general area NE of Auburn on Forest Hill Divide) 488 Comment
  SBBG122296  Trifolium hirtum G. K. Helmkamp with E. A. Helmkamp 2008-4-17 13297 Placer ca. 0.2 mi N of St Hwy 193 on Fowler Rd, ca. 6 mi E of Lincoln 92 Comment
  SD236125  Brodiaea minor G. K. Helmkamp, E. A. Helmkamp 2008-4-17 13284 Placer Sacramento Valley: Ranch House Road, 0.2 mile southeast of Sheridan 36 Comment
  SD237460  Geranium dissectum G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15904 Placer Sierra Nevada Mountains Foothills: along Salmon Falls Road, at Miners Valley Road, 4.5 miles south of junction with CA-49 at Pilot Hill (Pilot Hill 7.5'Q) 287 Comment
  SD237617  Diplacus aurantiacus G. K. Helmkamp, E. A. Helmkamp 2010-4-23 15931 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River (Pilot 7.5'Q) 156 Comment
  SD239555  Sanicula bipinnata George K. Helmkamp, E. A. Helmkamp 2012-5-5 18933 Placer Northern Sierra Nevada Mountains Foothills: Todd Valley Road, 1.2 miles south of its junction with Foresthill Road (Georgetown 7.5'Q) 779 Comment
  SD240993  Acmispon nevadensis var. nevadensis George K. Helmkamp, E. A. Helmkamp 2011-7-26 17854 Placer Northern Sierra Nevada Mountains Foothills: Emigrant Gap Road, 0.1 mile west of its junction with US-80, 0.65 mile NE (65a^z) of Emigrant Gap (Blue Canyon 7.5'Q) 1590 Comment
  SD243066  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 (Duncan Peak 7.5'Q) 1552 Comment
  SD243134  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 (Duncan Peak 7.5'Q) 2040 Comment
  SD243161  Phacelia hydrophylloides George K. Helmkamp, E. A. Helmkamp 2010-7-28 16662 Placer Northern Sierra Nevada Mountains: Forest Hill Road, 22 miles northeast of the city of Foresthill. 2041 Comment
  SD243175  Allophyllum integrifolium George K. Helmkamp, E. A. Helmkamp 2011-8-26 18184 Placer Northern Sierra Nevada Mountains: along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat. 2050 Comment
  SD243207  Suksdorfia ranunculifolia George K. Helmkamp, E. A. Helmkamp 2010-8-14 16779 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. Seeping wet area shaded by a rock bank. 1552 Comment
  SD243214  Chamaesaracha nana George K. Helmkamp, E. A. Helmkamp 2011-8-26 18185 Placer Northern Sierra Nevada Mountains: along Forest Hill Road, 12.9 miles east of Humbug Road, less than 1 mile northwest of Robinson Flat. Rocky flat at roadside. 2050 Comment
  SD248357  Plagiobothrys stipitatus var. micranthus George K. Helmkamp 2013-3-28 20282 Placer Eastern Sacramento Valley: along 10th Street/Ranch House Road, 0.6 mile south of its juncton with Riosa Road in Sheriden (Lincoln 7.5'Q) 42 Comment
  SD255737  Lupinus bicolor George K. Helmkamp, Amy Barnes 2014-3-21 22644 Placer Sacramentop Valley; Sheridan, Riosa Road at the west side of its junction with old CA 65. 32 Comment
  SEINET11261460  Nemophila heterophylla George Helmkamp, E. A. Helmkamp 2012-5-5 18920 Placer Northern Sierra Nevada Mountains Foothills on Lake Clementine Road, 1.2 miles W of the junction with Foresthill Road. 0.3 air miles SE (123 degrees) of Clementine Dam on the American River.; 0 396 Comment
  SEINET11261554  Trifolium hirtum George Helmkamp, E. A. Helmkamp 2011-4-10 17156 Placer In Sacramento Valley along Riosa Road at the E edge on the village of Sheridan.; 0 41 Comment
  SEINET11261851  Linanthus ciliatus George Helmkamp, E. A. Helmkamp 2011-7-26 17892 Placer Northern Sierra Nevada Mountains: Bowman Lake Road, .9 mile north of its junction with CA Hwy 20, .85 mi. NE (231/4) of emigrant Gap and N of I-80 (Blue canyon 7.5' Q); 0 1434 Comment
  SEINET11261858  Iris hartwegii subsp. pinetorum George Helmkamp, E. A. Helmkamp 2012-5-11 18942 Placer Foothills, Northern Sierra Nevada Mountains: Finning Mill Road, at the junction with Forest Hill Road (Foresthill 7.5' Q.); 0 1136 Comment
  SEINET11261906  Acer macrophyllum George Helmkamp, E. A. Helmkamp 2012-5-11 18953 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
  SEINET11266062  Gilia leptalea George Helmkamp, E. A. Helmkamp 2011-8-26 18172 Placer Norther Sierra Nevada Mountains: along Forest Hill Road, 0.4 miles of Robinson Flat (Duncan Peak 7.5 Q.); 0 2041 Comment
  SEINET3245842  Castilleja foliolosa G. K. Helmkamp, E. A. Helmkamp 2007-1 11715 Placer Foothills, Northern Sierra Nevada Mountains: Forest Hill Road at the junction with the unnamed road to Lake Clementine. 457 Comment
  SEINET3245951  Trifolium dubium G. K. Helmkamp, E. A. Helmkamp 2010-1 15928 Placer Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River (Pilot Hill 7.5') 157 Comment
  SEINET3282798 Image available Achnatherum occidentale subsp. californicum George K. Helmkamp, E. A. Helmkamp 2009-8-12 15451 Placer Sierra Nevada Mountains; Forest Hill Road at Robinson Flat, 27 miles northeast of the city of Foresthill. 2061 Comment
  SEINET3828565  Dittrichia graveolens George K. Helmkamp, E. A. Helmkamp 2011-1 18480 Placer Sacramento Valley/Sierra Nevada Foothills: along CA-193 (Lincon Newcastle Hwy). 2.0 miles east of East Street in Lincoln, near Stagecoach ln. (Gold Hill 7.5') 125 Comment
  SEINET4560808  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2010-1 17017 Placer Northern Sierra Nevada Mountains Foothills: Yankee Jim's Road, 0.5 miles north of Forest Hill Road in Foresthill, near intersection with Mayflower rd. 948 Comment
  SEINET4560817  Galium bolanderi George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2010-1 19808 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
  SEINET4691669  Campanula prenanthoides George K. Helmkamp, E. A. Helmkamp 2010-1 16783 Placer Northern Sierra Nevada Mountains: American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing. 1552 Comment
  SEINET4691682  Hesperolinon micranthum George K. Helmkamp, E. A. Helmkamp 2010-1 16760 Placer Northern Sierra Nevada Mountains: Finning Mill Road, 2.3 miles north of Forest Hill Road at the crossing of McBride Creek. 1082 Comment
  SEINET4691694  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2010-1 16666 Placer Northern Sierra Nevada Mountains: Forest Hill Road, 1.6 miles west of the junction with Soda Springs Road at Robinson Flat. 2040 Comment
  SEINET9262029  Prunella vulgaris subsp. lanceolata George K. Helmkamp, Elizabeth Helmkamp 2013-1 20804 Placer Northern Sierra Nevada Mountains Foothills; Yankee Jims Road, 3.6 miles northwest of its junction with Forest Hill Road (Foresthill 7.5 Q) 768 Comment
  UCD108251  Lupinus lepidus var. confertus G. K. Helmkamp; E. A. Helmkamp 2005-9-30 9964 Placer Northern High Sierra Mountains: ca. 3.5 mi NW of Lake Tahoe; Along the Truckee River and CA Highway 89, 0.1 mi N of Alpine Meadows Road. 1902 Comment
  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
  UCD113213  Prunus emarginata G. K. Helmkamp; E. A. Helmkamp 2007-5-23 12063 Placer Northern Sierra Nevada Mountains; Humbug Canyon Road, 0.2 mile northwest of Forest Hill Road, generally southwest of Westville. 1576 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
  UCD130409  Chondrilla juncea G. K. Helmkamp; E. A. Helmkamp 2006-8-11 11206 Placer Northern Sierra Nevada Mountain. Along connecting road joining Forest Hill Road, with the CA-49 crossing of American River. 396 Comment
  UCD132211  Eriophyllum lanatum var. grandiflorum G. K. Helmkamp; Elizabeth Helmkamp 2006-5-13 10441 Placer Northern Sierra Nevada. Ca. 4 air miles NE of Auburn, along Forest Hill Road, 1.8 miles northeast of its junction with CA Hwy 49 at the middle fork of American River. 370 Comment
  UCD138733  Iris hartwegii subsp. hartwegii G. K. Helmkamp; E. A. Helmkamp 2007-5-23 12046 Placer Northern Sierra Nevada Mountains: Along Forest Hill Road, 2.3 miles northeast of Foresthill. 1116 Comment
  UCD95313  Eschscholzia caespitosa G. K. Helmkamp; Elizabeth Helmkamp 2006-4-13 10198 Placer Northern Sierra Nevada Foothills; Forest Hill Road, 2.5 miles east of its junction with CA Hwy 49. North side of the middle fork of the American River. NE Auburn. 274 Comment
  UCD99342  Stellaria calycantha G. K. Helmkamp; E. A. Helmkamp 2007-5-23 12056 Placer Northern Sierra Nevada Mountains. Along Forest Hill Road, 11.1 miles northeast of Foresthill. Comment
  UCR120236  Castilleja miniata subsp. miniata George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-30 5065 Placer Northern Sierra Nevada Range, Truckee River, c. 4 mi upstream from Lake Tahoe; 1.1 mi south of Squaw Valley Road 1860 Comment
  UCR120238  Trifolium hybridum George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-30 5059 Placer Northern Sierra Nevada Range, Truckee River, c. 4 mi upstream from Lake Tahoe; 1.1 mi south of Squaw Valley Road 1860 Comment
  UCR120250  Ceanothus cordulatus George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5039 Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR120500  Linanthus harknessii George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5033 Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR121482  Amelanchier utahensis George K. Helmkamp, E. A. Helmkamp, A. Kerchner 1999-6-29 5017 A Placer Northern Sierra Nevada Range, N of Hwy I-80 at west exit to Donner Lake; opening to Negro Canyon 2134 Comment
  UCR170318  Chenopodium berlandieri George K. Helmkamp, Elizabeth Helmkamp 2005-9-30 9952 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR170793  Madia glomerata George K. Helmkamp, E. A. Helmkamp 2005-9-30 9956 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR170804  Aster integrifolius George K. Helmkamp, E. A. Helmkamp 2005-9-30 9948 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 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
  UCR170816  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2005-9-30 9951 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR170818  Lepidium campestre George K. Helmkamp, E. A. Helmkamp 2005-9-30 9958 Placer Northern Sierra Nevada Mtns., Junction of Chalet and Alpine Meadows Roads west of Calif. Highway 89 (near Alpine ski area) 2081 Comment
  UCR171031  Cardamine hirsuta George K. Helmkamp, E. A. Helmkamp 2006-2-24 10069 Placer Northern Sacramento Valley, Wise Road just east of its junction with Calif. Highway 65; c. 1 mi SE of Ewing 47 Comment
  UCR171333  Monardella odoratissima George K. Helmkamp, E. A. Helmkamp 2005-10-1 9982 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
  UCR171342  Nepeta racemosa George K. Helmkamp, E. A. Helmkamp 2005-10-1 9989 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
  UCR173254  Adiantum jordanii George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10451 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
  UCR173255  Polypodium calirhiza George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10450 Placer Northern Sierra Nevada Foothills, c. 4 air mi. NE of Auburn, along an unnamed road to Lake Clementine, 1.2 mi. N of Forest Hill Road 422 Comment
  UCR173272  Clarkia purpurea subsp. quadrivulnera George K. Helmkamp, Elizabeth Helmkamp 2006-5-13 10436 Placer Northern Sierra Nevada Foothills, c. 4 air mi. NE of Auburn, along Forest Hill Road, 1.8 mi. NE of its junction with Calif. Hwy 49 at the middle fork of the American River 370 Comment
  UCR173516  Luzula comosa George K. Helmkamp, Elizabeth Helmkamp 2006-4-6 10133 Placer Northern Sierra Nevada Foothills, NE edge of Sacramento metropolitan area; Sierra College Road and King Ranch Road SSE of Rocklin 122 Comment
  UCR173518  Capsella bursa-pastoris George K. Helmkamp, Elizabeth Helmkamp 2006-4-6 10130 Placer Northern Sierra Nevada Foothills, NE edge of Sacramento metropolitan area; Sierra College Road and King Ranch Road SSE of Rocklin 122 Comment
  UCR176250  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2006-8-11 11217 Placer Northern Sierra Nevada Mtns foothills, along Forest Hill Rd., 8.7 miles northeast of Forest Hill 1311 Comment
  UCR176263  Calocedrus decurrens George K. Helmkamp, E. A. Helmkamp 2006-8-11 11211 Placer Northern Sierra Nevada Mtns foothills, along Forest Hill Rd., 8.7 miles northeast of Forest Hill 1311 Comment
  UCR188843  Ceanothus cuneatus subsp. cuneatus George K. Helmkamp, E. A. Helmkamp 2007-3-25 11714 Placer Foothills, Northern Sierra Nevada Mountains, Forest Hill Road at the junction with the unnamed road to Lake Clementine 457 Comment
  UCR189301  Eriophyllum lanatum var. integrifolium George K. Helmkamp, E. A. Helmkamp 2007-7-27 12631 Placer Northern Sierra Nevada Mountains, Southeast end of Cisco Grove; along local road just before it passes under Interstate-80 1744 Comment
  UCR189640  Calyptridium umbellatum George K. Helmkamp, E. A. Helmkamp 2007-7-27 12635 Placer Northern Sierra Nevada Mountains, Southeast end of Cisco Grove; along local road just before it passes under Interstate-80 1744 Comment
  UCR190584  Eriogonum nudum var. oblongifolium George K. Helmkamp, E. A. Helmkamp 2007-9-14 12960 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road 6 miles east of Foresthill 610 Comment
  UCR190585  Sanguisorba minor subsp. muricata George K. Helmkamp, E. A. Helmkamp 2007-9-14 12959 Placer Northern Sierra Nevada Mountains Foothills, along Mosquito Ridge Road 0.4 mile east of Foresthill 942 Comment
  UCR190657  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2007-5-23 12079 Placer Northern Sierra Nevada Mountains Foothills, junction of Iowa Hill Road and Finning Mill Road (U. S. F. S. Rd #10) in the Sugar Pine Recreation area 1137 Comment
  UCR191056  Muilla maritima George K. Helmkamp, E. A. Helmkamp 2007-5-23 12048 Placer Northern Sierra Nevada Mountains Foothills, along Forest Hill Road, 2.3 miles northeast of Foresthill 1116 Comment
  UCR191058  Viola lobata var. lobata George K. Helmkamp, E. A. Helmkamp 2007-5-23 12050 Placer Northern Sierra Nevada Mountains Foothills, along Forest Hill Road, 2.3 miles northeast of Foresthill 1116 Comment
  UCR191104  Calochortus leichtlinii George K. Helmkamp, E. A. Helmkamp 2007-6-12 12327 Placer Northern Sierra Nevada Mountains, Lake Spaulding Road just north of its junction with Hwy CA-20 1610 Comment
  UCR191105  Polygonum phytolaccifolium George K. Helmkamp, E. A. Helmkamp 2007-6-12 12326 Placer Northern Sierra Nevada Mountains, Lake Spaulding Road just north of its junction with Hwy CA-20 1610 Comment
  UCR193332  Erigeron foliosus var. hartwegii George K. Helmkamp, E. A. Helmkamp 2007-5-30 12190 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 13.5 miles east of its junction with Forest Hill Road in Foresthill, between Mosquito Ridge Lookout and North Fork of Middle Fork American River 800 Comment
  UCR194970  Sanicula crassicaulis George K. Helmkamp, E. A. Helmkamp 2007-5-18 12001 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
  UCR194972  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2007-10-28 13109 Placer Sacramento Valley, along Nicolaus Road 5.8 miles west of Lincoln 27 Comment
  UCR197278  Triteleia hyacinthina George K. Helmkamp, E. A. Helmkamp 2008-4-17 13295 Placer Sacramento Valley, Ranch House Road, 0.2 mile southeast of Sheridan 37 Comment
  UCR198564  Dichelostemma multiflorum George K. Helmkamp, E. A. Helmkamp 2008-4-17 13293 Placer Sacramento Valley, Ranch House Road, 0.2 mile southeast of Sheridan 37 Comment
  UCR200870  Verbascum thapsus George K. Helmkamp, E. A. Helmkamp 2008-9-15 14116 Placer Northern Sierra Nevada Mountains, along Foresthill Road 20 miles northeast of the city of Forest Hill 1707 Comment
  UCR201514  Castilleja miniata subsp. miniata George K. Helmkamp, E. A. Helmkamp 2008-8-20 14026 Placer Northern Sierra Nevada Mountains, Donner Pass Road on the west side of Donner Pass and east of Norden 2149 Comment
  UCR201515  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2008-8-20 14021 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
  UCR201902  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2008-8-20 14031 Placer Northern Sierra Nevada Mountains, Soda Springs Road, 1.9 miles south of its junction with Donner Pass Road and beside (completely dry) Serena Creek 2107 Comment
  UCR201923  Monardella odoratissima subsp. pallida George K. Helmkamp, E. A. Helmkamp 2008-8-20 14030 Placer Northern Sierra Nevada Mountains, Soda Springs Road, 1.9 miles south of its junction with Donner Pass Road and beside (completely dry) Serena Creek 2107 Comment
  UCR202651  Epilobium densiflorum George K. Helmkamp 1999-6-29 5056 Placer Sierra Nevada Foothills, corner of Dry Creek Rd & Bowman Rd, near Nielsburg, 3 mi NE of Auburn beside I-80 & 1.5 NW of North Fork Lake on American River 457 Comment
  UCR206574  Aster occidentalis var. occidentalis George K. Helmkamp, E. A. Helmkamp 2009-7-16 15201 Placer Sierra Nevada Mountains, Foresthill Road, 20.3 miles northeast of the city of Foresthill 1704 Comment
  UCR206673  Spiraea densiflora George K. Helmkamp, E. A. Helmkamp 2009-7-16 15193 Placer Sierra Nevada Mountains, Foresthill Road, 20.3 miles northeast of the city of Foresthill 1704 Comment
  UCR206756  Agrostis exarata George K. Helmkamp, E. A. Helmkamp 2009-7-16 15207 Placer Sierra Nevada Mountains, Foresthill Road, 20.3 miles northeast of the city of Foresthill 1704 Comment
  UCR207102  Wyethia mollis George K. Helmkamp, E. A. Helmkamp 2009-7-16 15238 Placer Sierra Nevada Mountains, Robinson Flat, a camping and day-use area at the junction of Forest Hill and Soda Springs Roads 2107 Comment
  UCR207123  Ipomopsis aggregata subsp. formosissima George K. Helmkamp, E. A. Helmkamp 2009-7-16 15220 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
  UCR207848  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2009-4-22 14560 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
  UCR208543  Pentagramma triangularis subsp. triangularis George K. Helmkamp, E. A. Helmkamp 2009-5-7 14609 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 9.8 miles east of its junction with Forest Hill Road in Foresthill 433 Comment
  UCR208579  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2009-5-7 14621 Placer Sierra Nevada Mountains Foothills, Oxbow Road, 2.0 miles south of its junction with Mosquito Ridge Road; north edge of Oxbow Reservoir 402 Comment
  UCR208584  Ceanothus prostratus George K. Helmkamp, E. A. Helmkamp 2009-5-11 14656 Placer Sierra Nevada Mountains Foothills, junction of Forest Hill Road and Chicken Hawk Road, northeast of the city of Foresthill 1338 Comment
  UCR208585  Ceanothus diversifolius George K. Helmkamp, E. A. Helmkamp 2009-5-11 14654 Placer Sierra Nevada Mountains Foothills, along Forest Hill Road, 2.5 miles northeast of Foresthill 1073 Comment
  UCR208612  Erigeron foliosus var. hartwegii George K. Helmkamp, E. A. Helmkamp 2009-5-7 14616 Placer Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 9.8 miles east of its junction with Forest Hill Road in Foresthill 433 Comment
  UCR209737  Ericameria George K. Helmkamp, E. A. Helmkamp 2009-8-12 15428 Placer Sierra Nevada Mountains, Forest Hill Road, 20.5 miles northeast of the city of Foresthill 1662 Comment
  UCR209741  Draperia systyla George K. Helmkamp, E. A. Helmkamp 2009-8-12 15426 Placer Sierra Nevada Mountains, Forest Hill Road, 20.5 miles northeast of the city of Foresthill 1662 Comment
  UCR209749  Eucephalus breweri George K. Helmkamp, E. A. Helmkamp 2009-8-12 15432 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
  UCR218116  Hordeum brachyantherum George K. Helmkamp, E. A. Helmkamp 2010-6-26 16400 Placer Sierra Nevada Mountains Foothills, Yankee Jim's Road in Bunch Canyon, 0.5 mile southeast of its junction with Canyon Way 591 Comment
  UCR218118  Rumex acetosella George K. Helmkamp, E. A. Helmkamp 2010-6-26 16404 Placer Sierra Nevada Mountains Foothills, Yankee Jim's Road in Bunch Canyon, 0.5 mile southeast of its junction with Canyon Way 591 Comment
  UCR218216  Philadelphus lewisii George K. Helmkamp, E. A. Helmkamp 2010-6-26 16415 Placer Sierra Nevada Mountains Foothills, Yankee Jims road along Brush Creek in Bunch Canyon, 2.8 miles southeast of its junction with Canyon Way, 2.75 mi. ENE (74 deg. ) of Applegate 476 Comment
  UCR218237  Lilium humboldtii subsp. humboldtii George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16442 Placer Sierra Nevada Mountains Foothills, Iowa Hill Road, 1.3 miles SE of its junction with Canyon Way in Colfax 418 Comment
  UCR218241  Adiantum jordanii George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16437 Placer Sierra Nevada Mountains Foothills, Iowa Hill Road, 1.9 miles southeast of its junction with Canyon Way in Colfax 415 Comment
  UCR218449  Clarkia unguiculata George K. Helmkamp, Mary Alice Barnes & Mary Jane Ganibe 2010-7-2 16420 Placer Sierra Nevada Mountains Foothills, Yankee Jims Road, 3.2 miles southeast of its junction with Canyon Way, 4.4 air mi. SE (156 deg. ) of Colfax 412 Comment
  UCR219647  Collinsia tinctoria George K. Helmkamp, E. A. Helmkamp 2010-6-26 16369 Placer Sierra Nevada Mountains Foothills, junction of Canyon Way and Yankee Jim's Road, east of I-80 between Weimar and Colfax 616 Comment
  UCR222553  Triteleia ixioides subsp. scabra George K. Helmkamp, E. A. Helmkamp 2010-4-17 15898 Placer Sierra Nevada Mountains Foothills, Rattlesnake Bar Road, 8.3 miles southwest of its junction with CA-49 near Pilot Hill 308 Comment
  UCR224243  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 2010-4-23 15907 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
  UCR229447  Gayophytum diffusum subsp. parviflorum George K. Helmkamp, E. A. Helmkamp 2011-7-26 17894 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
  UCR229454  Elymus cinereus George K. Helmkamp, E. A. Helmkamp 2011-7-26 17898 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
  UCR229455  Spergularia rubra George K. Helmkamp, E. A. Helmkamp 2011-7-26 17897 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
  UCR231006  Nama lobbii George K. Helmkamp, E. A. Helmkamp 2010-8-14 16801 Placer Northern Sierra Nevada Mountains, American Hill Road, 1.2 miles south of its junction with Foresthill Road 1567 Comment
  UCR231008  Pteridium aquilinum var. pubescens George K. Helmkamp, E. A. Helmkamp 2010-8-14 16800 Placer Northern Sierra Nevada Mountains, American Hill Road, 1.2 miles south of its junction with Foresthill Road 1567 Comment
  UCR231831  Suksdorfia ranunculifolia George K. Helmkamp, E. A. Helmkamp 2010-8-14 16779 Placer Northern Sierra Nevada Mountains, American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing 1552 Comment
  UCR231839  Galium triflorum George K. Helmkamp, E. A. Helmkamp 2010-8-14 16782 Placer Northern Sierra Nevada Mountains, American Hill Road (Forest Route 13), 4.7 miles south of its junction with Foresthill Road and just south of a creek crossing 1552 Comment
  UCR231847  Aquilegia formosa George K. Helmkamp, E. A. Helmkamp 2010-8-11 16756 Placer Northern Sierra Nevada Mountains, Finning Mill Road, 2.3 miles north of Forest Hill Road at the crossing of McBride Creek 1082 Comment
  UCR231854  Silene californica George K. Helmkamp, E. A. Helmkamp 2010-8-11 16765 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 3.7 miles north of Forest Hill Road 1140 Comment
  UCR231855  Adenocaulon bicolor George K. Helmkamp, E. A. Helmkamp 2010-8-11 16764 Placer Northern Sierra Nevada Mountains, Finning Mill Road, 2.3 miles north of Forest Hill Road at the crossing of McBride Creek 1082 Comment
  UCR231872  Amsinckia menziesii var. menziesii George K. Helmkamp, E. A. Helmkamp 2011-4-10 17137 Placer Sacramento Valley, east of Sheridan just north of the junction of North Kilaga Springs Road and Kilaga Springs Road 98 Comment
  UCR232689  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2011-9-30 18344 Placer Northern Sierra Nevada Mountains Foothills, Diggins Hill Road at the south side of the Bear River Reservoir, 1.1 miles north of Dutch Flat 852 Comment
  UCR233242  Castilleja applegatei subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2011-7-9 17690 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 10.8 miles southeast of its junction with Foresthill Road 503 Comment
  UCR233277  Castilleja applegatei subsp. pinetorum George K. Helmkamp, E. A. Helmkamp 2011-7-9 17685 Placer Northern Sierra Nevada Mountains Foothills, Mosquito Ridge Road, 1.6 miles southeast of its junction with Foresthill Road at Foresthill 883 Comment
  UCR234213  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2011-4-10 17171 Placer Sacramento Valley, along Riosa Road, 2.3 miles east of Sheridan 43 Comment
  UCR235386  Agoseris retrorsa George K. Helmkamp, E. A. Helmkamp 2012-5-11 18948 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.2 miles north of its junction with Forest Hill Road 1104 Comment
  UCR235388  Viola sheltonii George K. Helmkamp, E. A. Helmkamp 2012-5-11 18950 Placer Northern Sierra Nevada Mountains Foothills, Finning Mill Road, 1.2 miles north of its junction with Forest Hill Road 1104 Comment
  UCR235504  Calochortus minimus George K. Helmkamp, E. A. Helmkamp 2012-5-11 18941 Placer Foothills, northern Sierra Nevada Mountains, Finning Mill Road at the junction with Forest Hill Road 1136 Comment
  UCR235596  Lupinus microcarpus var. densiflorus George K. Helmkamp, E. A. Helmkamp 2012-5-5 18921 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
  UCR237457  Stellaria media George K. Helmkamp, E. A. Helmkamp 2012-2-23 18579 Placer Eastern edge Sacramento Valley, Newcastle, along CA-193 (Newcastle Hwy), 0.1 mile southeast of its junction with Langs Hill Road, west of the junction with I-80, SW of Auburn 279 Comment
  UCR238600  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2012-3-31 18649 Placer Sacramento Valley, along CA-193, 0.1 mile west of its junction with Sierra College Blvd. 88 Comment
  UCR240912  Phacelia racemosa George K. Helmkamp, E. A. Helmkamp 2012-6-19 19233 Placer Northern Sierra Nevada Mountains, Foresthill Road, 1.7 miles east of its junction with Devil's Thumb Road 1671 Comment
  UCR240944  Gayophytum George K. Helmkamp, E. A. Helmkamp 2012-9-25 19896 Placer Northern Sierra Nevada Mountains, junction of Blue Canyon Road and Putt Road, just south of I-80, west of Emigrant Gap 1634 Comment
  UCR240957  Mimulus moschatus George K. Helmkamp, E. A. Helmkamp 2012-9-25 19908 Placer Northern Sierra Nevada Mountains, Blue Canyon Road south of I-80 and 0.1 mile north of the Southern Pacific Railroad crossing 1451 Comment
  UCR241326  Monardella odoratissima subsp. pallida George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19822 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 0.7 mile north of Robinson Flat Campground, about 26 miles northeast of Foresthill, Tahoe National Forest 2034 Comment
  UCR241343  Eucephalus breweri George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19826 Placer Northern Sierra Nevada Mountains, along Forest Hill Road, 0.5 mile north of Robinson Flat Campground, c. 26 miles NE of Foresthill, Tahoe National Forest 2043 Comment
  UCR241723  Gayophytum George K. Helmkamp, E. A. Helmkamp 2012-9-25 19921 Placer Northern Sierra Nevada Mountains, Laing Road, parallel to I-80; 0.2 mile east of its junction with Emigrant Gap Road 1611 Comment
  UCR241762  Cordylanthus tenuis subsp. tenuis George K. Helmkamp, Mary Alice Barnes, E. A. Helmkamp 2012-9-8 19799 Placer Northern Sierra Nevada Mountains, along Forest Hill Road at junction with Hidden Treasure Road, c. 0.4 mile NE of Sugar Pine Road 1384 Comment
  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
  UCR242371  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
  UCR249527  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
  UCR249590  Eriophyllum lanatum var. achilleoides George K. Helmkamp, Elizabeth Helmkamp 2013-6-11 20809 Placer Northern Sierra Nevada Mountains Foothills, Yankee Jim's Road, 3.6 miles northwest of its junction with Forest Hill Road 768 Comment
  UCR250063  Collomia heterophylla George K. Helmkamp, Mary Alice Barnes 2013-5-3 20473 Placer Foothills, northern Sierra Nevada Mountains, Mosquito Ridge Road, 1.1 miles south of Forest Hill Road 962 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
  UCR250361  Phacelia imbricata subsp. imbricata George K. Helmkamp, Mary Alice Barnes 2013-4-18 20369 Placer Northern Sierra Nevada Mtns Foothills, Iowa Hill Road, 1.8 miles west of the bridge over North Fork American River, 0.6 mi. (airline) east of I-80 at Colfax 544 Comment
  UCR253121  Linanthus bicolor George K. Helmkamp, Amy Barnes 2014-4-23 22819 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
  UCR253129  Trifolium incarnatum George K. Helmkamp, Amy Barnes 2014-4-23 22809 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
  UCR253527  Triteleia ixioides subsp. anilina George K. Helmkamp, Amy Barnes 2014-4-23 22791 Placer Sierra Nevada Mountains Foothills, Old Auburn-Foresthill Road, 1.7 miles northeast of its junction with CA-49 at North Fork American River 407 Comment
  UCR253807  Picris echioides George K. Helmkamp, Elizabeth Helmkamp 2012-10-30 20092 Placer Sacramento Valley, South Dowd Road, 0.1 mile south of its junction with Moore Road, southwest of Lincoln 34 Comment
  UCR256515  Lupinus microcarpus var. densiflorus George K. Helmkamp, Amy Barnes 2014-4-23 22771 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
  UCR257018  Ranunculus occidentalis George K. Helmkamp, Amy Barnes 2014-4-23 22788 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
  UCR257629  Epilobium pallidum George K. Helmkamp, Ann Kerchner, Amy Barnes 2012-7-23 19535 Placer Northern Sierra Nevada Mountains, Sugar Bowl Road, 0.4 mile south of its junction with Donner Pass Road, just west of Lake Mary 2136 Comment
  UCR258181  Euthamia occidentalis George K. Helmkamp, Elizabeth Helmkamp 2012-10-16 20040 Placer Sierra Nevada Mountains Foothills, city of North Auburn, corner of Locksley Lane and CA-49 384 Comment
  UCR258238  Lasthenia californica George K. Helmkamp, Amy Barnes 2013-3-28 20238 Placer Eastern Sacramento Valley, NW edge of Sheridan, new section of Riosa Road, connecting new CA-65 with old CA-65 43 Comment
  SEINET3440054 Image available Elymus elymoides George K. Helmkamp, E. A. Helmkamp 2011-7-26 17862 Placer Northern Sierra Nevada Mountains: Emigrant Gap Road, 0.1 mi W of junction with US-80, 0.65 mi NE of Emigrant Gap 1590 Comment
  SEINET7249048  Lupinus nanus George K. Helmkamp, Mary Alice Barnes 2013-1 Placer Comment
  UCR123517  Lotus purshianus var. purshianus George K. Helmkamp, Elizabeth Helmkamp 2001-7-7 6869 Plumas Sierra Nevada Mountains, Calif. Hwy 89, 2.3 miles SSE of its junction with Calif. Hwy 36, Lake Almanor Region 1357 Comment
  UCR123520  Madia glomerata George K. Helmkamp, Elizabeth Helmkamp 2001-7-7 6864 Plumas Sierra Nevada Mountains, Calif. Hwy 89, 2.3 miles SSE of its junction with Calif. Hwy 36, Lake Almanor Region 1357 Comment
  UCR123673  Juncus orthophyllus George K. Helmkamp, Elizabeth Helmkamp 2001-7-7 6883 Plumas Sierra Nevada Mountains, Calif. Hwy 36, 4.3 mi SW of its junction with Calif. Hwy 89, vicinity of Lake Almanor 1463 Comment
  CLARK-A1045-110  Monardella linoides George K. Helmkamp 1977-3-20 Riverside Pinyon Pines area above west edge of Deep canyon; Palm Desert 15'Q Comment
  CLARK-A1045-152  Cerastium viscosum George K. Helmkamp 1978-6-1 Riverside Santa Ana Mountains vernal pools near origin of creek; Wildomar 7.5'Q Comment
  CLARK-A1045-162  Downingia concolor subsp. brevior George K. Helmkamp 1978-6-1 Riverside Santa Ana Mountains vernal pool; Wildomar 7.5'Q Comment
  CLARK-A1045-171  Trifolium amplectens George K. Helmkamp 1979-4-27 Riverside Santa Ana Mountains vernal pools; Wildomar 7.5'Q Comment
  CLARK-A1045-180  Brodiaea filifolia George K. Helmkamp 1979-5-5 Riverside Santa Ana Mountains vernal pool; Wildomar 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
  RSA613708  Phacelia cicutaria var. hispida George K. Helmkamp 1998-4-3 3090 Riverside Coachella Valley: Mission Creek, the Wildlands Conservancy Preserve. 1.1 mile NW of the ranch house besides a gauging station along the creek. 747 Comment
  SBBG94891  Astragalus crotalariae G. K. Helmkamp 1975-2-17 s.n. Riverside St Hwy 111 at Salt Crk, NE side of Salton Sea Comment
  SD143928  Ditaxis neomexicana G. K. Helmkamp, E. A. Helmkamp 1998-2-18 2702 Riverside Little Maria Mountains, Colorado desert, Midland road, 3.8 miles SE of Midland Comment
  SD224921  Atriplex suberecta G. K. Helmkamp 1996-1-23 999 Riverside Beside irrigated fields 1.5 miles northeast of Blythe, approximately at Intake Blvd and 10th Ave. 81 Comment
  SD224941  Euphorbia polycarpa G. K. Helmkamp, E. A. Helmkamp 1998-2-5 2675 Riverside Little San Bernardino Mtns, 3.2 mi. N of jct of Thousand Palms Canyon Rd & Dillon Rd. 456 Comment
  SD225006  Hyptis emoryi G. K. Helmkamp 1998-4-4 3178 Riverside Colorado Desert: 2.3 mi N of Hwy I-10 on Eagle Mtn Rd. 274 Comment
  SD225135  Fagonia pachyacantha G. K. Helmkamp 1998-4-4 3158 Riverside Colorado Desert: 7.1 mi. N of Hwy I-10 on Eagle Mtn Rd, to the vivinity of the pumping station. 305 Comment
  SEINET2042036 Image available Polygonum hydropiperoides George Helmkamp, E. A. Helmkamp 2000-8-29 5985 Riverside Colorado Desert: S of Mecca, where Lincoln St. Crosses the Whitewater River. Ca. 0.5 mi from the Salton Sea. 67 Comment
  SEINET2043201 Image available Trichoptilium incisum George K. Helmkamp, E. A. Helmkamp 1998-4-24 3388 Riverside Santa Rosa Mountains: Palms to Pines HWY ( CA-74) 1 mi N of Carrizo Rd. near Black Hill. 1006 Comment
  SEINET238562  Chaenactis parishii George K. Helmkamp 1998-6-27 4092 Riverside Santa Rosa Mtns.: 3.3 mi S of Hwy 74 along Santa Rosa Mtn Rd. in vicinity of an unnamed spring. 1585 Comment
  SEINET238578  Delphinium parishii George K. Helmkamp 1998-6-27 4116 Riverside Santa Rosa Mtns.: 5.8 mi SE of Hwy 74 along Santa Rosa Mtn Rd. below Mountain Home Spring. 1799 Comment
  SEINET269089  Atriplex elegans George Helmkamp 1995-3-16 Riverside W of Rice Rd. 10.3 miles NE of Desert Center. 200 Comment
  SEINET270228  Physalis angulata G. Helmkamp 1996-1-18 8 -1 Riverside About 2 miles northeast of Blythe 91 Comment
  SEINET3223161 Image available Aristida adscensionis George Helmkamp 1995-3-16 Riverside Colorado Desert; desert pavement on alluvial fan below rocky slopes of Coxcomb Mountains, W of Rice Road, 10.3 miles NE of Desert Center. 200 Comment
  SEINET9259737 Image available Pentagramma triangularis subsp. triangularis George K. Helmkamp, Amy Barnes 2013-1 22311 Riverside Sierra Nevada Mountains Foothills: Utica Powerhouse Road (beside Angel's Creek), 0.6 mile northeast of its junction with CA-4 (Murphys 7.5 Q) 974 Comment
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Apr 12 2018
  UCD130392  Chaenactis stevioides G. K. Helmkamp; E. A. Helmkamp 1998-2-18 2722 Riverside Colorado Desert: Chuckwalla Valley; 0.3 mi S of Checkwalla Rd. on Graham Pass Rd. Comment
  UCR100871  Allionia incarnata George K. Helmkamp, E. A. Helmkamp 1998-2-18 2703 Riverside Sonoran (Colorado) Desert, Midland Road., 3.8 mi. SE of Midland, Little Maria Mtns. 198 Comment
  UCR100879  Marina parryi George K. Helmkamp, E. A. Helmkamp 1998-2-18 2694 Riverside Sonoran (Colorado) Desert, Midland Road., 3.8 mi. SE of Midland, Little Maria Mtns. 198 Comment
  UCR101792  Calandrinia ciliata George K. Helmkamp, E. A. Helmkamp 1997-3-5 1337 Riverside San Bernardino Mtns./San Gorgonio Pass, Cabazon, 0.5 mi north of I-10 on Millard Pass Rd. 564 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
  UCR102944  Pectocarya platycarpa George K. Helmkamp 1998-4-4 3137 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR102945  Phacelia distans George K. Helmkamp 1998-4-4 3135 A Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR103306  Loeseliastrum matthewsii George K. Helmkamp 1998-4-4 3151 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR103308  Physalis crassifolia George K. Helmkamp 1998-4-4 3166 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
  UCR103315  Atriplex hymenelytra George K. Helmkamp, E. A. Helmkamp 1998-2-5 2658 Riverside Sonoran (Colorado) Desert, Indio Hills, 3 mi. east of Thousand Palms & 1.1 mi. N on Amity Rd. 101 Comment
  UCR103571  Perityle emoryi George K. Helmkamp, E. A. Helmkamp 1998-2-18 2746 Riverside Chuckwalla Mtns, Graham Pass Rd, 10.6 mi. SSW of Chuckwalla Valley Rd. 488 Comment
  UCR103579  Physalis crassifolia George K. Helmkamp, E. A. Helmkamp 1998-1-17 2549 Riverside Sonoran (Colorado) Desert, Mecca Hills, Box Canyon Road ENE of Mecca and on the north side of the Coachella Canal .3 Comment
  UCR103584  Perityle emoryi George K. Helmkamp, E. A. Helmkamp 1998-2-18 2717 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR103585  Cryptantha maritima George K. Helmkamp, E. A. Helmkamp 1998-2-18 2716 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR104000  Psorothamnus emoryi George K. Helmkamp 1998-4-4 3138 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR104011  Ditaxis neomexicana George K. Helmkamp, E. A. Helmkamp 1998-2-5 2684 Riverside Little San Bernardino Mtns., 3.2 mi. north of junction of Thousand Palms Canyon Road and Dillon Road. 457 Comment
  UCR104019  Malacothrix glabrata George K. Helmkamp 1998-4-4 3140 Riverside Sonoran (Colorado) Desert, junction of Calif. Hwy 62 (Twentynine Palms Hwy) & Calif. Hwy 177 (Desert Center-Rice Rd) 457 Comment
  UCR104023  Perityle emoryi George K. Helmkamp, E. A. Helmkamp 1998-2-5 2662 Riverside Sonoran (Colorado) Desert, Indio Hills, 3 mi. east of Thousand Palms & 1.1 mi. N on Amity Rd. 101 Comment
  UCR104834  Eriogonum thomasii George K. Helmkamp 1998-4-4 3171 Riverside Sonoran (Colorado) Desert, 7.1 miles north of Hwy I-10 on Eagle Mtn Rd, to the vicinity of the pumping station 305 Comment
  UCR104835  Monoptilon bellioides George K. Helmkamp 1998-4-4 3165 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
  UCR104880  Muhlenbergia microsperma George K. Helmkamp, E. A. Helmkamp 1998-2-18 2724 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR104965  Brandegea bigelovii George K. Helmkamp, E. A. Helmkamp 1998-2-18 2730 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR107261  Cyperus eragrostis George K. Helmkamp, E. A. Helmkamp 1998-8-17 4446 Riverside Santa Ana Mtns., San Juan Canyon along the Ortega Hwy (Calif. Hwy 74) beside the Orange Co. line 503 Comment
  UCR110957  Mimulus pilosus George K. Helmkamp 1998-6-27 4104 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
  UCR110983  Antirrhinum coulterianum George K. Helmkamp 1998-6-27 4081 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
  UCR110992  Arctostaphylos pringlei subsp. drupacea George K. Helmkamp 1998-6-27 4121 Riverside Santa Rosa Mtns., 5.8 mi SE of Hwy 74 along Santa Rosa Mtn Rd. (= Santa Rosa Truck Trail = F. S. Rd. 7S02), below Mountain Home Spring 1799 Comment
  UCR122527  Nemophila menziesii George K. Helmkamp, E. A. Helmkamp 2001-5-20 6665 Riverside San Jacinto Mtns., 0.3 mi NW of Keen Camp Summit along CA-74 1494 Comment
  UCR122569  Polygonum hydropiperoides George K. Helmkamp, E. A. Helmkamp 2000-8-29 5985 Riverside Colorado Desert., South of Mecca, where Lincoln St. crosses the Whitewater River, about 0.5 mile from the Salton Sea -67 Comment
  UCR122741  Penstemon centranthifolius George K. Helmkamp, E. A. Helmkamp 1998-4-24 3380 Riverside Santa Rosa Mountains, Pinyon Pines along Calif. Hwy 74 between the San Jacinto and Santa Rosa Mountains 1296 Comment
  UCR122749  Eriophyllum wallacei George K. Helmkamp, E. A. Helmkamp 1998-4-24 3383 Riverside Santa Rosa Mountains, Palms-to-Pines Hwy (Calif. Hwy 74), 1 mi north of Carrizo Rd near Black Hill 1006 Comment
  UCR130709  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 1998-6-27 4074 Riverside San Jacinto Mtns., Garner Valley, along Hwy 74 at Morris Ranch Rd. 1372 Comment
  UCR130710  Eriastrum eremicum subsp. eremicum George K. Helmkamp, E. A. Helmkamp 1998-6-27 4076 Riverside San Jacinto Mtns., Garner Valley, along Hwy 74 at Morris Ranch Rd. 1372 Comment
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Nov 13 2018
  UCR29780  Calycoseris wrightii George K. Helmkamp 1983-3-24 383- 14 Riverside Sonoran (Colorado) Desert, north base of the Little Chuckwalla Mountains, 1.5 miles east of Graham Pass Road 336 Comment
  UCR29853  Chaenactis carphoclinia var. carphoclinia George K. Helmkamp 1983-3-24 383- 19 Riverside Sonoran (Colorado) Desert, north base of the Little Chuckwalla Mountains, 1.5 miles east of Graham Pass Road 336 Comment
  UCR30059  Aristida adscensionis George K. Helmkamp 1983-4-5 483- 28 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR30088  Chorizanthe brevicornu var. brevicornu George K. Helmkamp 1983-4-5 483 26 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, large wash below Chuckwalla Spring, 9 miles SW of Graham Pass Road 489 Comment
  UCR37617  Gnaphalium palustre George K. Helmkamp 1984-5-2 D- 21 Riverside Little San Bernardino Mountains, Big Morongo Canyon, 3 - 3.5 miles below the caretaker's house at the Big Morongo Preserve 610 Comment
  UCR37637  Chilopsis linearis George K. Helmkamp 1984-5-5 E- 9 Riverside Transverse Range, Little San Bernardino Mountains, Big Morongo Canyon, 4 road miles below the caretaker's house at the Big Morongo Preserve 549 Comment
  UCR41701  Lupinus hirsutissimus George K. Helmkamp 1986-4-7 755 Riverside Sonoran (Colorado) Desert, S of Morongo Valley. First canyon east of and parallel to Hwy 62 north of Indian Ave. 579 Comment
  UCR58452  Heterotheca sessiliflora subsp. fastigiata George K. Helmkamp 1989-10-7 s.n. Riverside Peninsular Range; San Jacinto Mtns, roadside beside Hwy 243 near Lawlor Lodge, c. 2 mi north of Pine Cove 1600 Comment
  UCR59847  Echinochloa colona George K. Helmkamp 1989-9-16 s.n. Riverside Sonoran (Colorado) Desert, W of Blythe, c. 0.5 mi. south of Hwy I-10 ['I-8'] , at Seeley Ave. [=16th Ave.] and Calif. Hwy 78 79 Comment
  UCR85434  Cryptantha angustifolia George K. Helmkamp 1994-4-26 88 6 Riverside Western Colorado Desert, Indio Hills; north of the landfill on Edom Hill 213 Comment
  UCR89561  Lupinus arizonicus George K. Helmkamp 1994-3-10 42- 08 Riverside Sonoran (Colorado) Desert, Indio Hills, canyon opening into Coachella Valley, 2 miles east of Thousand Palms on Ramon Road, and 1.3 miles north 122 Comment
  UCR89569  Cryptantha angustifolia George K. Helmkamp 1994-3-10 42 11 Riverside Sonoran (Colorado) Desert, Indio Hills, canyon opening into Coachella Valley, 2 miles east of Thousand Palms on Ramon Road, and 1.3 miles north 122 Comment
  UCR91949  Chenopodium murale George K. Helmkamp 1996-3-11 1001 Riverside Sonoran (Colorado) Desert, Colorado River Valley, 35th Avenue and California Hwy 78, 1.7 mi north of PaloVerde 72 Comment
  UCR96419  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 1997-1-8 1279 Riverside Sonoran (Colorado) Desert, Palm Springs. Lawn at El Cielo and Tahquitz-McCallum 152 Comment
  CAS-BOT-BC520344  Phoradendron leucarpum subsp. tomentosum George K. Helmkamp; E. A. Helmkamp 2012-10-3 19952 Sacramento SE Sacramento Valley: bike trail parking area at the S side of the American River, 0.6 mi W of Gold County Rd 27 Comment
  CAS-BOT-BC523888  Mollugo verticillata George K. Helmkamp; E. A. Helmkamp 2012-10-1 19943 Sacramento Eastern Sacramento Valley: Latrobe Rd, 2.4 mi W of the El Dorado Co. line, N of Rancho Murieta 73 Comment
  RSA0047094  Holozonia filipes George K. Helmkamp, E. A. Helmkamp 2008-10-2 14196 Sacramento Sacramento Valley: Latrobe Road, 7.4 miles west of Latrobe. 67 Comment
  RSA749737  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2008-10-2 14189 Sacramento Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  SD237332  Holocarpha virgata subsp. virgata G. K. Helmkamp, E. A. Helmkamp 2009-8-28 15535 Sacramento Northern Sacramento Valley: along Latrobe Road, 1.1 miles west of the El Dorado County line, 3 mi. NE (36a^z) of Rancho Murieta. 139 Comment
  SEINET3245875  Hemizonia fitchii G. K. Helmkamp, E. A. Helmkamp 2009-1 15537 Sacramento Northern Sacramento Valley: along Latrobe Road, 1.1 miles west of the El Dorado County line, 3 mi. NE (36 deg. ) of Rancho Murieta. 140 Comment
  SEINET3821623 Image available Poa annua George K. Helmkamp, E. A. Helmkamp 2010-3-26 15782 Sacramento Southern Sacramento Valley, Pony Brown Road, 0.7 mile east of its junction with Ione Road, 2.3 miles NW (338 degrees) of Eagle's Nest Airport (Carbondale 7.5' Q) 81 Comment
  UC1951195  Triphysaria eriantha subsp. eriantha G. K. Helmkamp, E. A. Helmkamp 2007-3-14 11619 Sacramento Sacramento Valley; edge of Sierra Nevada foothills: Latrobe Rd at Michigan Bar Rd, about 3.5 mi west of Latrobe and 0.3 mi W of the El Dorado County line. Folsom 7.5' Quad. Comment
  UCD108918  Vicia sativa subsp. nigra G. K. Helmkamp; E. A. Helmkamp 2007-3-14 11632 Sacramento Sacramento Valley near the edge of Sierra Nevada Mountains foothills: Latrobe Rd. about 5.7 miles west of Latrobe and 1.5 miles W of the El Dorado Co. line. 110 Comment
  UCD142101  Croton setiger G. K. Helmkamp; E. A. Helmkamp 2006-10-23 11557 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
  UCR184387  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2007-3-14 11635 Sacramento Sacramento Valley near the edge of Sierra Nevada Mountains foothills, Latrobe Rd about 5.7 miles west of Latrobe and 1.5 miles west of the El Dorado Co. line 110 Comment
  UCR184823  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2007-3-14 11629 Sacramento Sacramento Valley near the edge of Sierra Nevada Mountains foothills, Latrobe Rd about 5.7 miles west of Latrobe and 1.5 miles west of the El Dorado Co. line 110 Comment
  UCR193458  Conyza canadensis George K. Helmkamp, E. A. Helmkamp 2007-9-9 12917 Sacramento Sacramento Valley, along Hwy CA-16, 0.8 mile west of the Amador County line 85 Comment
  UCR201533  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2008-10-30 14291 Sacramento Southern Sacramento Valley, along Highway E13 (Twin Cities Road) 4.4 miles west of its junction with CA-99 5 Comment
  UCR201566  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2008-10-2 14194 Sacramento Sacramento Valley, Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  UCR201568  Amaranthus albus George K. Helmkamp, E. A. Helmkamp 2008-10-2 14185 Sacramento Sacramento Valley, Latrobe Road, 4.9 miles west of Latrobe and just east of the El Dorado Co. line 152 Comment
  UCR205156  Polygonum punctatum George K. Helmkamp, E. A. Helmkamp 2008-10-30 14300 Sacramento Southern Sacramento Valley, along CA-104, 0.6 mile west of Clay 24 Comment
  UCR205158  Holocarpha virgata subsp. virgata George K. Helmkamp, E. A. Helmkamp 2008-10-30 14302 Sacramento Southern Sacramento Valley, along CA-104, 0.6 mile west of Clay 24 Comment
  UCR233215  Erodium botrys George K. Helmkamp, E. A. Helmkamp 2010-3-26 15789 Sacramento Southern Sacramento Valley, Pony Brown Road, 0.7 mi. east of its junction with Ione Road, 2.3 miles NW (338 deg. ) of Eagle's Nest Airport 81 Comment
  UCR237567  Brassica juncea George K. Helmkamp, E. A. Helmkamp 2012-2-17 18552 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
  UCR237576  Triticum aestivum George K. Helmkamp, E. A. Helmkamp 2012-3-3 18591 Sacramento Sacramento Valley/Delta, River Road (Co. Rd. E-13), just north of Locke 13 Comment
  UCR237578  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2012-3-3 18589 Sacramento Sacramento Valley/Delta, River Road (Co. Rd. E-13), just north of Locke 13 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
  UCR241171  Croton setiger George K. Helmkamp, E. A. Helmkamp 2012-10-3 19957 Sacramento Southeast Sacramento Valley, bike trail parking area at the south side of the American River, 0.6 mile west of Gold Country Road 27 Comment
  UCR253259  Hordeum murinum subsp. leporinum George K. Helmkamp, Amy Barnes 2014-4-7 22723 Sacramento Sacramento Valley, Clay East Road, 1 mile east of its junction with CA-104 52 Comment
  UCR253561  Hordeum murinum subsp. leporinum George K. Helmkamp, Amy Barnes 2014-4-7 22709 Sacramento Sacramento Valley, North side of Rancho Seco Lake (Rancho Seco Recreational Park), 1.3 miles south of CA-104 76 Comment
  UCR122178  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 2002-4-23 7574 San Benito Inner South Coast Ranges, County Hwy J-1(Panoche Rd) 15.6 mi SE of its junction with CA Hwy 25; along Tres Pinos Creek 671 Comment
  UCR124225  Elymus elymoides subsp. elymoides George K. Helmkamp, E. A. Helmkamp 2001-5-30 6728 San Benito Gabilan Range, 11.0 mi south of San Juan Bautista on Hwy G-1; entrance to Fremont Peak State Park 800 Comment
  CLARK-A1045-390  Eriogonum thurberi 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-A1045-414  Lupinus andersonii George K. Helmkamp 1979-6-29 San Bernardino Big Bear Lake north of State Highway 38, .5 mile west of US Forestry Station; yellow pine forest; ; Fawnskin 7.5'Q 2133 Comment
  CLARK-A1045-433  Descurainia obtusa subsp. adenophora George K. Helmkamp 1979-6-29 San Bernardino San Bernardino Mountains north shore of Lake, .5 mile west of Forest Service Station; grassy area; ; Fawnskin 7.5'Q 2133 Comment
  CLARK-A1045-435  Astragalus bicristatus George K. Helmkamp 1979-6-29 San Bernardino San Bernardino Mountains .5 mile west of Forest Service Station; roadside; ; Fawnskin 7.5'Q 2133 Comment
  CLARK-A1045-464  Gilia diegensis George K. Helmkamp 1979-6-5 #2 San Bernardino San Bernardino Mountains along Forest Service road 3N08 at junction with 3N66Y; dry flat; yellow pine forest; Big Bear City 7.5'Q Comment
  CLARK-A1045-484  Deschampsia danthonioides George K. Helmkamp 1979-6-20 San Bernardino San Bernardino Mountains north end of Baldwin Lake; seep; Big Bear City 7.5'Q Comment
  CLARK-A1045-516  Navarretia peninsularis George K. Helmkamp 1979-6-22 San Bernardino San Bernardino Mountains north end of Baldwin Lake ; sagebrush scrub; ; Big Bear City 7.5'Q 2133 Comment
  CLARK-A1045-517  Epilobium paniculatum George K. Helmkamp 1979-6-22 San Bernardino San Bernardino Mountains north end of Baldwin Lake; moist wash in sagebrush scrub; Big Bear City 7.5'Q Comment
  CLARK-A1045-519  Juncus kelloggii George K. Helmkamp 1979-6-22 San Bernardino San Bernardino Mountains Big Bear City 7.5' Q Comment
  CLARK-A1045-521  Mimulus pilosus George K. Helmkamp 1979-6-22 San Bernardino San Bernardino Mountains north edge of Arrastre Flat along Forest Service road 3N04; yellow pine forest; ; Big Bear City 7.5'Q 2285 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-A1045-586  Baccharis sergiloides George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert southeast edge of mountains, along Kelbaker Road; ; Flynn 15'Q 1097 Comment
  CLARK-A1045-587  Haplopappus linearifolius George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert southeast edge of mountains, near Kelbaker Road; ; Flynn 15'Q 1097 Comment
  CLARK-A1045-589  Cucurbita foetidissima George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert 11 miles southeast of Kelso along old road through the Providence Mountains; ; Flynn 15'Q 1066 Comment
  CLARK-A1045-593  Gutierrezia bracteata George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert Flynn 15'Q Comment
  CLARK-A1045-595  Brickellia coulteri George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert Flynn 15'Q Comment
  CLARK-A1045-598  Franseria cordifolia George K. Helmkamp 1977-5-17 San Bernardino Mojave Desert Flynn 15'Q Comment
  CLARK-A1045-606  Nemacladus glanduliferus var. orientalis George K. Helmkamp 1978-5-6 San Bernardino Mojave Desert Kingston Road, 3 miles northeast [of cut?]; Clark Mt. 15'Q Comment
  CLARK-A1045-607  Astragalus acutirostris George K. Helmkamp 1978-5-6 San Bernardino Mojave Desert 3 miles up Kingston Road from Rocky hill [?]; ; Clark Mt. 15'Q 1036 Comment
  CLARK-A1045-609  Nemacladus rubescens George K. Helmkamp 1978-5-6 San Bernardino Mesquite Mountains 1.5 miles east of Pass; Clark Mt. 15'Q Comment
  CLARK-A1045-620  Eriogonum nidularium George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert east slope of Cima Dome, off Cima Road; in joshua tree woodland; ; Mescal Range 15' Q 1462 Comment
  CLARK-A1045-640  Eriogonum deflexum George K. Helmkamp 1977-5-29 San Bernardino Mojave Desert [along] Cima Road, north of Interstate Highway 15; ; Mescal Range 15'Q 1219 Comment
  CLARK-A1045-676  Eriogonum thomasii George K. Helmkamp 1977-5-15 San Bernardino Mojave Desert Kelbaker Road, east of Ludlow at freeway [Interstate 40]; ; Cadiz 15'Q 609 Comment
  CLARK-A1045-677  Eriophyllum wallacei George K. Helmkamp 1977-5-16 San Bernardino Mojave Desert beside Kelbaker Road, east of Ludlow at Interstate [40]; disturbed soil; ; Cadiz 15'Q 609 Comment
  CLARK-A1045-679  Oenothera laciniata George K. Helmkamp 1978-5-6 San Bernardino Mojave Desert Kingston Road, approximately .5 mile from Cima Road; in dry wash; at roadside; Clark Mt. 15'Q Comment
  CLARK-A1045-713  Notholaena parryi George K. Helmkamp 1978-5-8 San Bernardino Mojave Desert dry wash at southwest base, under rocks; ; Ord Mts 15'Q 1280 Comment
  CLARK-A1045-715  Oenothera deltoides George K. Helmkamp 1977-4-21 San Bernardino along U.S. 395; 2 miles north of Adelanto; Adelanto 7.5'Q Comment
  CLARK-A1045-718  Linanthus breviculus George K. Helmkamp 1978-5-8 San Bernardino Mojave Desert south base of mountain; Ord Mts 15'Q Comment
  CLARK-A1045-734  Eriogonum maculatum George K. Helmkamp 1978-5-1 San Bernardino Mojave Desert at camp road, north of Ord Mountain; Ord Mts 15'Q Comment
  CLARK-A1045-783  Eriodictyon angustifolium George K. Helmkamp 1977-5-14 San Bernardino New York Mountains south end of New York Mountains in cresosote bush scrub; ; Mid Hills 15'Q 1676 Comment
  CLARK-A1045-785  Streptanthus cordatus George K. Helmkamp 1977-5-14 San Bernardino New York Mountains south end of New York Mountains; Mid Hills 15'Q Comment
  CLARK-A1045-788  Cryptantha maritima George K. Helmkamp 1977-5-14 San Bernardino New York Mountains south end of New York Mountains; Mid Hills 15'Q Comment
  CLARK-A1045-796  Linanthus demissus George K. Helmkamp 1978-4-18 #1; 24 San Bernardino Mojave Desert 5 miles south of Barstow along State highway 247; Barstow SE 7.5'Q Comment
  CLARK-A1045-797  Linanthus demissus George K. Helmkamp 1978-4-18 #3; 44 San Bernardino Mojave Desert ca. 5 miles north of Slash-X Ranch, south of Barstow off of State highway 247; Barstow SE 7.5'Q Comment
  CLARK-A1045-799  Linanthus dichotomus George K. Helmkamp 1978-4-9 San Bernardino Mojave Desert in saddle near campground road, north slope of Ord Mountain; Ord Mts 15' Q Comment
  HSC79017  Chenopodium album G. K. Helmkamp 1984-4-29 - 11 San Bernardino Big Morongo Canyon near the Riverside County line, 2 mi. below the Big Morongo Presrve headquarters, floor of main canyon and 1/4 mi. up a broad side canyon to E, Little San Bernardino Mtns. 701 Comment
  HSC79223  Acmispon heermannii G. K. Helmkamp 1984-4-29 - 27 San Bernardino Big Morongo Canyon near the Riverside Co. line, 2 mi. below the Big Morongo Preserve headquarters, floor of main canyon to 0.25 mi. up a broad side canyon to the east. 701 Comment
  HSC79243  Schoenoplectus americanus G. K. Helmkamp 1983-10-8 - 15 San Bernardino TNC Big Morongo Preserve, Morongo Valley, near the house in the San Bernardino County-owned area 762 Comment
  OBI37297  Polygonum aviculare G. Helmkamp 1985-4-30 446 San Bernardino Morongo Cyn. SE of Morongo Valley; at the entrance to the Preserve Comment
  RSA487441  Dyssodia cooperi George K. Helmkamp 1988-4-29 s.n. San Bernardino 0.2 mi N of Goffs. 793 Comment
  RSA492914  Porophyllum gracile George K. Helmkamp 1988-4-29 s.n. San Bernardino Coarse sand and gravel wash in Fenner Valley between Hackberry Mtns and Vontrigger Hills, 11.3 miles NNW oif Goffs. 1098 Comment
  RSA518507  Chenopodium incanum George K. Helmkamp 1985-5-28 s.n. San Bernardino South of Morongo Valley. First STring crossing about 1 1/2 miles downstream from the Kiosk. 716 Comment
  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
  RSA567981  Eriogonum plumatella George K. Helmkamp 1993-9-12 23 -16 San Bernardino Along the edge of Burns Canyon. 1372 Comment
  RSA614898  Astragalus aridus George K. Helmkamp 1998-3-4 3107 San Bernardino S edge of Cadiz Cry alke, 13.1 miles N. of mile-marker 76 on CA hwy 62, E of Twentynine Palms. 183 Comment
  SBBG103900  Oligomeris linifolia G. K. Helmkamp 1993-4-24 San Bernardino Smith Talc Rd, ca. 9 mi E of Tecopa Pass 762 Comment
  SD124773  Allenrolfea occidentalis G. K. Helmkamp 1986-9-27 San Bernardino Along Salt Creek at the Salt Spring Hills, 28 mi. N of Baker on Hwy 127. 185 Comment
  SD140023  Eriogonum wrightii G. Helmkamp 1993-9-22 35 13 San Bernardino Steep canpyon side with Pinon Pine. 14.4 mi up Burns Cyn from junction of Pioneer Town and Pipes Cyn Rds. 2073 Comment
  SD185125  Brickellia californica G. K. Helmkamp 1993-9-22 34 5 San Bernardino 6.7 miles up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads. 1529 Comment
  SD224949  Astragalus aridus G. K. Helmkamp 1998-4-4 3107 San Bernardino Mojave Desert: S edge of Cadiz Dry Lake, 13.1 mi N of mile-marker 76 on CA hwy 62 (Twentynine Palms Hwy), E of Twentynine Palms. 182 Comment
  SEINET2042024 Image available Baileya pauciradiata George Helmkamp, E. A. Helmkamp 2001-3-24 6315 San Bernardino South Central Mojave Desert; 0.3 mi W of CA-247 on Pipes Cyn Rd. 1037 Comment
  SEINET3729987 Image available Astragalus lentiginosus var. fremontii George K. Helmkamp, E. A. Helmkamp 1997-4-29 1666 San Bernardino Kingston Mtns, Smith Talc Rd, 0.4 mi W of the summit (Tecopa Pass). 1524 Comment
  UCD121473  Zeltnera exaltata G. Helmkamp 1993-9-22 34 -16 San Bernardino Burns Canyon, 6.7 mi up from junction of Pioneer Town and Pipes Cyn Rds. 1524 Comment
  UCR100326  Bahiopsis parishii George K. Helmkamp 1997-11-2 2511 San Bernardino Mojave Desert/Little San Bernardino Mountains, Morongo Valley, Vista Drive and Pinyon [St.] 793 Comment
  UCR100328  Mirabilis bigelovii var. retrorsa George K. Helmkamp 1997-11-2 2511 B San Bernardino Mojave Desert/Little San Bernardino Mountains, Morongo Valley, Vista Drive and Pinyon [St.] 793 Comment
  UCR101040  Eremalche rotundifolia George K. Helmkamp, E. A. Helmkamp 1998-4-9 3297 San Bernardino Mojave Desert, NW of Barstow; 2.2 mi. NE of Calif. Hwy 58 on unnamed dirt road 2.8 mi. west of Waterman Rd 701 Comment
  UCR101124  Dithyrea californica George K. Helmkamp, E. A. Helmkamp 1998-2-26 2757 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101125  Oenothera deltoides George K. Helmkamp, E. A. Helmkamp 1998-2-26 2758 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101622  Geraea canescens George K. Helmkamp, E. A. Helmkamp 1998-2-26 2781 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
  UCR101636  Lepidium lasiocarpum var. lasiocarpum George K. Helmkamp, E. A. Helmkamp 1998-2-26 2783 San Bernardino Mojave Desert, NW side of Salt Spring Hills about 28 mi north of Baker; between the hills and Calif. Hwy 127 201 Comment
  UCR101638  Streptanthella longirostris George K. Helmkamp, E. A. Helmkamp 1998-2-26 2762 San Bernardino Mojave Desert, East Cronese Dry Lake. 0.2 mi south of I-15 on Basin Rd. 332 Comment
  UCR101663  Oenothera deltoides var. deltoides George K. Helmkamp, E. A. Helmkamp 1998-2-26 2807 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
  UCR102957  Calyptridium monandrum George K. Helmkamp 1997-3-2 1314 San Bernardino Mojave Desert, Town of Morongo Valley, near Vista & Pinyon. 808 Comment
  UCR102983  Amsinckia tessellata var. tessellata George K. Helmkamp 1998-3-30 3018 San Bernardino Mojave Desert, Dale Dry Lake, east of Twentynine Palms; along Iron Age Rd, 4.2 mi. SE of Amboy Rd. 366 Comment
  UCR102992  Simmondsia chinensis George K. Helmkamp, E. A. Helmkamp 1998-3-16 2841 San Bernardino Mojave Desert, 50 ft. north of the boundary of Joshua Tree National Park at the S end of Sunkist Rd (E of town of Joshua Tree) 884 Comment
  UCR103314  Cryptantha micrantha George K. Helmkamp 1998-3-30 3055 San Bernardino Mojave Desert, E of town of Joshua Tree & south of Copper Mtn, 0.4 mi. east of the S end of Kerr Rd near Joshua Tree National Park 884 Comment
  UCR103333  Monoptilon bellioides George K. Helmkamp 1998-3-30 3027 San Bernardino Mojave Desert, vicinity of Twentynine Palms; Encelia Ave., 1.0 mi. north of Calif. Hwy 62 793 Comment
  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
  UCR104053  Krascheninnikovia lanata George K. Helmkamp, E. A. Helmkamp 1997-4-12 1635 San Bernardino Eastern Mojave Desert, Mesquite Mtns, Kingston Rd, east side of Winters Pass 1006 Comment
  UCR104060  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 1997-4-12 1637 San Bernardino Eastern Mojave Desert, Mesquite Mtns, Kingston Rd, east side of Winters Pass 1006 Comment
  UCR104062  Nama demissa var. demissa George K. Helmkamp 1998-4-4 3103 San Bernardino West Mojave Desert, Dale Lake, 1.8 mi. west of Iron Age Rd & 0.7 mi. north of Calif. hwy 62 366 Comment
  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
  UCR108898  Phalaris minor George K. Helmkamp, E. A. Helmkamp 1998-4-18 3317 San Bernardino Eastern Mojave Desert, disturbed soil in the city of Baker 299 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
  UCR118314  Heliotropium curassavicum George K. Helmkamp, E. A. Helmkamp 1998-4-19 3365 San Bernardino Mojave Desert, northwest side of East Cronese Lake, about 15 miles west of Baker 335 Comment
  UCR118315  Plantago ovata George K. Helmkamp, E. A. Helmkamp 1998-4-19 3348 San Bernardino Mojave Desert, northwest side of East Cronese Lake, about 15 miles west of Baker 335 Comment
  UCR121867  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 2001-3-24 6299 San Bernardino Southcentral Mojave Desert, 0.3 mile west of CA Hwy 247 on Pipes Canyon Road 1037 Comment
  UCR122656  Cryptantha angustifolia George K. Helmkamp, E. A. Helmkamp 1998-3-16 2852 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
  UCR122658  Baileya pleniradiata George K. Helmkamp, E. A. Helmkamp 1998-3-16 2854 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
  UCR122773  Lepidium lasiocarpum var. lasiocarpum George K. Helmkamp, E. A. Helmkamp 1998-3-16 2859 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
  UCR122821  Camissonia claviformis subsp. aurantiaca George K. Helmkamp, E. A. Helmkamp 2001-3-31 6335 San Bernardino Eastern Mojave Desert, Goffs Rd, 8.1 mi east of Goffs 610 Comment
  UCR122829  Eschscholzia minutiflora George K. Helmkamp, E. A. Helmkamp 2001-3-31 6342 San Bernardino Eastern Mojave Desert, NE side of junction of US-95 and I-40 366 Comment
  UCR122937  Mimulus bigelovii var. bigelovii George K. Helmkamp, E. A. Helmkamp 2001-3-30 6419 San Bernardino Eastern Mojave Desert, US-95, 8.5 mi south of I-40. 351 Comment
  UCR122941  Lotus strigosus George K. Helmkamp, E. A. Helmkamp 2001-3-30 6439 San Bernardino Eastern Mojave Desert, 13.5 mi north of Calif. Hwy 62 along US-95 then 0.1 mi E 274 Comment
  UCR122949  Amsinckia tessellata var. tessellata George K. Helmkamp, E. A. Helmkamp 2001-3-30 6458 San Bernardino Eastern Mojave Desert, 13.5 mi north of Calif. Hwy 62 along US-95 then 0.1 mi E 274 Comment
  UCR124077  Palafoxia arida var. arida George K. Helmkamp, Elizabeth Helmkamp 2000-4-4 5355 San Bernardino Colorado River, Beside the California-Arizona border near Topock, AZ. 152 Comment
  UCR130990  Eriogonum nidularium George K. Helmkamp, E. A. Helmkamp 1998-5-3 3511 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR131096  Machaeranthera tortifolia var. tortifolia George K. Helmkamp, E. A. Helmkamp 1998-5-3 3517 San Bernardino Eastern Mojave Desert, Mesquite Mtns, 3 mi. west of the Nevada border at Sandy Valley 1067 Comment
  UCR136211  Chenopodium fremontii George K. Helmkamp, E. A. Helmkamp 1999-9-30 5303 San Bernardino San Bernardino Mountains, 5.7 miles up Burns Cyn Rd from Rimrock Rd., NW of Pioneertown 1768 Comment
  UCR136219  Eriastrum densifolium subsp. austromontanum George K. Helmkamp, E. A. Helmkamp 1999-9-30 5311 San Bernardino East side San Bernardino Mountains., 7.3 mi up Burns cyn Rd from Rimrock Rd (NW of Pioneertown) 1799 Comment
  UCR14007  Artemisia rothrockii George K. Helmkamp 1973-9-25 s.n. San Bernardino San Bernardino Mtns., Holcomb Creek north of Fawnskin 1835 Comment
  UCR14014  Cercocarpus ledifolius George K. Helmkamp 1973-9-25 s.n. San Bernardino San Bernardino Mtns., Holcomb Creek north of Fawnskin 1835 Comment
  UCR14390  Juncus rugulosus George K. Helmkamp 1974-7-9 s.n. San Bernardino San Bernardino Mtns, E fork of Santa Ana River, 3 mi. below Calif. Hwy 38. [Seven Oaks area] 1677 Comment
  UCR14439  Urtica dioica subsp. holosericea George K. Helmkamp 1974-6-22 s.n. San Bernardino San Bernardino Mtns, Arrowbear Lake 1890 Comment
  UCR145541  Tidestromia oblongifolia George K. Helmkamp, E. A. Helmkamp 1998-4-19 3357 San Bernardino Mojave Desert, northwest side of East Cronese Lake, about 15 miles west of Baker 335 Comment
  UCR14648  Eriogonum nidularium 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
  UCR15417  Deschampsia danthonioides George K. Helmkamp 1977-7-4 s.n. San Bernardino San Bernardino Mtns., Snow Valley 2134 Comment
  UCR15913  Mimulus floribundus George K. Helmkamp 1979-6-22 s.n. San Bernardino San Bernardino Mtns., Along [3N16], where the fork to Burnt Flat turns NW 2287 Comment
  UCR21383  Trichostema austromontanum George K. Helmkamp 1974-6-22 s.n. San Bernardino San Bernardino Mtns, Keller Peak Road 2134 Comment
  UCR21763  Arida arizonica George K. Helmkamp 1980-5-23 s.n. San Bernardino Eastern Mojave Desert, Kelbaker Road [Hwy 127], 2 miles north of Baker 280 Comment
  UCR25556  Eragrostis lehmanniana George K. Helmkamp 1981-10-8 s.n. San Bernardino Eastern Mojave Desert, Along Hwy I-40, 0.5 mi west of the turn-off to Mitchell Caverns State Park Comment
  UCR26756  Langloisia matthewsii 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
  UCR37502  Ambrosia dumosa George K. Helmkamp 1984-4-20 840420- 33 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37549  Rorippa nasturtium-aquaticum George K. Helmkamp 1984-4-20 840420- 53 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR37665  Festuca arundinacea George K. Helmkamp 1984-4-20 840420- 57 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
  UCR41584  Centrostegia thurberi subsp. thurberi George K. Helmkamp 1986-4-5 734 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, Morongo Valley, NE end of the Nature Conservancy Preserve, along the Desert Wash Trail 823 Comment
  UCR44837  Bouteloua aristidoides var. aristidoides 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
  UCR50719  Dyssodia cooperi George K. Helmkamp 1988-4-29 s.n. San Bernardino Eastern Mojave Desert, 0.2 mi north of Goffs 793 Comment
  UCR51283  Ericameria cooperi George K. Helmkamp 1988-4-29 s.n. San Bernardino Eastern Mojave Desert, Fenner Valley between Hackberry Mtns & Vontrigger Hills, 11.3 mi NNW of Goffs 1100 Comment
  UCR51290  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
  UCR51296  Eriogonum fasciculatum var. polifolium George K. Helmkamp 1988-4-29 s.n. San Bernardino Eastern Mojave Desert, Fenner Valley between Hackberry Mtns & Vontrigger Hills, 11.3 mi NNW of Goffs 1100 Comment
  UCR53533  Astragalus wootonii George K. Helmkamp 1988-4-29 s.n. San Bernardino Eastern Mojave Desert, 0.2 mi north of Goffs 793 Comment
  UCR78021  Eriogonum brachyanthum George K. Helmkamp 1993-9-18 29- 18 San Bernardino Mojave Desert, Morongo Valley, canyon at W end of Palo Verde Road, l mi west of Juniper Ave, between Big Morongo Canyon and Dry Morongo Canyon 1070 Comment
  UCR78029  Nicotiana attenuata George K. Helmkamp 1993-9-22 35- 15 San Bernardino San Bernardino Mtns., 14.4 mi up Burns Canyon from junction of Pioneertown and Pipes Canyon Roads 2073 Comment
  UCR79277  Salsola tragus George K. Helmkamp 1993-9-12 22- 11 San Bernardino San Bernardino Mtns, Burns Canyon, in the vicinity of Burns Spring 1524 Comment
  UCR79297  Eriogonum davidsonii George K. Helmkamp 1993-9-12 23- 06 San Bernardino San Bernardino Mtns., edge of Burns Canyon 1375 Comment
  UCR79301  Galium parishii George K. Helmkamp 1993-9-22 38- 11 San Bernardino San Bernardino Mtns., Meadow at junction of Burns Canyon and Round Valley Roads [near Rose Mine] 2073 Comment
  UCR79309  Ceanothus cordulatus George K. Helmkamp 1993-9-22 37- 01 San Bernardino San Bernardino Mtns, Round Valley Road just east of Calif. Hwy 38 2378 Comment
  UCR79519  Quercus cornelius-mulleri George K. Helmkamp 1993-9-22 32- 03 San Bernardino San Bernardino Mtns./Mojave Desert, 5.9 mi up Burns Canyon from crossing of Pioneertown and Pipes Canyon Roads 1585 Comment
  UCR91712  Carex subfusca George K. Helmkamp 1996-6-11 1127 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR91929  Ranunculus alismifolius var. alismellus George K. Helmkamp 1996-6-11 1149 San Bernardino San Bernardino Mountains, Along 2N11 SW of the city of Big Bear Lake, c. 0.5 mile west of [2N10] Mill Creek Road 2256 Comment
  UCR91941  Montia chamissoi George K. Helmkamp 1996-6-11 1137 San Bernardino San Bernardino Mtns., 1.2 miles SW of Tulip Lane, city of Big Bear Lake 2143 Comment
  UCR93195  Salvia dorrii var. pilosa 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
  UCR97640  Carex praegracilis George K. Helmkamp 1985-5-12 489 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, along the entrance road to Morongo Canyon, SE of Morongo Valley 762 Comment
  VVC509  Arceuthobium divaricatum G. K. Helmkamp 1995-10-28 1 -3 San Bernardino San Bernardino Mtns, 4.2 mi. NW of Rimrock, Burns Cyn. Rd. 1680 Comment
  VVC950  Streptanthella longirostris G. K. Helmkamp 1998-4-9 3301 A San Bernardino Mojave Desert, NW of Barstow; 2.2 mi. NE of CA Hwy 58 on unnamed dirt road 2.8 mi. W of Waterman Rd 701 Comment
  UCD132102  Eriophyllum ambiguum G. Helmkamp 1987-3-24 s.n. San Bernardino SW base of Fremont Peak, about 6.5 miles E of U.S. Highway 395. 975 Comment
  RSA627389  Bahiopsis laciniata George K. Helmkamp, E. A. Helmkamp 1999-4-16 4672 San Diego Japatul Rd 1/2 mi SE of Loveland Reservoir. 488 Comment
  RSA628856  Paeonia californica George K. Helmkamp, E. A. Helmkamp 1999-4-15 4635 San Diego 3.5 mi SE of Oak Grove at junction of Hwy-79 and Chihuahua Valley Rd. 960 Comment
  RSA628858  Astragalus trichopodus var. lonchus George K. Helmkamp, E. A. Helmkamp 1999-2-26 4629 San Diego Chula Vista: City Preserve W of E Street on the grounds of the old munitions manufacturing area. 6 Comment
  SEINET3092190 Image available Allionia incarnata George K. Helmkamp, E. A. Helmkamp 1996-11-14 1263 San Diego Borrego Springs, intersection of Tilting T and hwy S-3 198 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
  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
  UCR130675  Paeonia californica George K. Helmkamp, E. A. Helmkamp 1999-4-15 4635 San Diego Dodge Valley, 3.5 mi SE of Oak Grove at junction of Hwy-79 & Chihuahua Valley Rd. 960 Comment
  UCR130681  Malacothrix californica George K. Helmkamp, E. A. Helmkamp 1999-4-15 4646 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
  UCR130689  Keckiella antirrhinoides subsp. antirrhinoides George K. Helmkamp, E. A. Helmkamp 1999-4-17 4683 San Diego Peninsular Ranges, Barrett-Smith Rd between Barrett Junction & Barrett School Rd. NE of Calif. Hwy 94 268 Comment
  UCR130697  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 1999-4-17 4692 San Diego Dulzura Creek Watershed., Honey Springs Rd 1.9 mi west of California-94 366 Comment
  UCR130701  Lathyrus vestitus subsp. alefeldii George K. Helmkamp, E. A. Helmkamp 1999-4-17 4675 San Diego Peninsular Ranges, Barrett-Smith Rd between Barrett Junction & Barrett School Rd. NE of Calif. Hwy 94 268 Comment
  UCR131358  Ericameria linearifolia George K. Helmkamp, E. A. Helmkamp 1999-4-16 4671 San Diego Sweetwater River Drainage, Japatul Rd 1/2 mi SE of Loveland Reservoir. 488 Comment
  UCR14464  Vicia villosa George K. Helmkamp 1974-5-21 s.n. San Diego Peninsular Range, 1 mile south of Lake Henshaw Comment
  UCR94628  Leptochloa uninervia George K. Helmkamp 1996-9-11 1176 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
  CDA25625  Amaranthus powellii G. K. Helmkamp, E. A. Helmkamp 2007-10-13 13083 San Joaquin Northern San Joaquin Valley; Along Highway CA-88, 1.0 mile southwest of Clements at Disch Road. Comment
  CDA25632  Raphanus raphanistrum G. K. Helmkamp, E. A. Helmkamp 2007-10-13 13087 San Joaquin Northern San Joaquin Valley; Along Highway CA-88, 1.0 mile southwest of Clements at Disch Road. Comment
  CDA25742  Amaranthus albus G. K. Helmkamp, E. A. Helmkamp 2007-10-13 13082 San Joaquin Northern San Joaquin Valley; Along Highway CA-88, 1.0 mile southwest of Clements at Disch Road. Comment
  SBBG133735  Dittrichia graveolens G. K. Helmkamp, E. A. Helmkamp 2011-10-15 18427 San Joaquin St Hwy 26, 0.6 mi NE of Escalon-Bellota Rd 40 Comment
  SD240817  Amaranthus powellii George K. Helmkamp, E. A. Helmkamp 2011-10-15 18432 San Joaquin San Joaquin Valley: along CA-26, 0.6 mile northeast of Escalon-Bellota Road (Linden 7.5'Q) 39 Comment
  SD241175  Galium aparine George K. Helmkamp, E. A. Helmkamp 2012-4-7 18730 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
  SD241195  Veronica persica George K. Helmkamp, E. A. Helmkamp 2012-4-7 18727 San Joaquin San Joaquin Valley: along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden (Valley Springs SW 7.5'Q) 52 Comment
  SD243107  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2011-3-12 17066 San Joaquin Northern San Joaquin Valley: Collier Road, 0.2 mile east of tis junction with Suttenfield Road, 9.4 miles NE (50a^z) of Lodi (Lockeford 7.5'Q) 39 Comment
  SD254677  Veronica peregrina subsp. xalapensis George K. Helmkamp, Elizabeth Helmkamp 2013-3-26 20229 San Joaquin East end of San Joaquin Valley: Escalon Bellota Road (J6), 6.1 milse south of its junction with CA-26, 0.52 mile south of Copperopolis Road (Farmington 7.5'Q) 52 Comment
  SEINET3271555 Image available Bromus diandrus George K. Helmkamp, E. A. Helmkamp 2009-3-26 14451 San Joaquin San Joaquin Valley; junction of Collier Road and CA-88, about 0.2 mile north of the Mokelumne River 43 Comment
  SEINET3828573  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2012-1 18721 San Joaquin San Joaquin Valley: along CA-26, 3.2 miles southwest of its junction with N Wimer Road, NE of town of Linden (Valley Springs SW 7.5') 52 Comment
  SEINET4560755  Brassica rapa George K. Helmkamp, E. A. Helmkamp 2011-1 17070 San Joaquin Upper San Joaquin Valley: between Lodi and Galt, Forest Lake Road just west of CA-99. 27 Comment
  UCR194724  Panicum capillare George K. Helmkamp, E. A. Helmkamp 2007-10-13 13095 San Joaquin Northern San Joaquin Valley, along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road 37 Comment
  UCR194725  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2007-10-13 13080 San Joaquin Northern San Joaquin Valley, along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road 37 Comment
  UCR195149  Erigeron canadensis George K. Helmkamp, E. A. Helmkamp 2007-10-13 13092 San Joaquin Northern San Joaquin Valley, along Hwy CA-88, 1.0 mile southwest of Clements at Disch Road 37 Comment
  UCR208314  Festuca dertonensis George K. Helmkamp, E. A. Helmkamp 2009-3-26 14469 San Joaquin San Joaquin Valley, along CA-88/12 in Lockeford, 0.3 mile northeast of Elliott Road 24 Comment
  UCR208315  Lasthenia californica George K. Helmkamp, E. A. Helmkamp 2009-3-26 14468 San Joaquin San Joaquin Valley, along CA-88/12 in Lockeford, 0.3 mile northeast of Elliott Road 24 Comment
  UCR232675  Amaranthus powellii George K. Helmkamp, E. A. Helmkamp 2011-10-15 18432 San Joaquin San Joaquin Valley, along CA-26, 0.6 mile northeast of Escalon-Bellota Rd. 40 Comment
  UCR232681  Proboscidea lutea George K. Helmkamp, E. A. Helmkamp 2011-10-15 18438 San Joaquin San Joaquin Valley, along CA-4, 0.4 mile east of Farmington 41 Comment
  UCR233206  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2010-4-7 15837 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
  UCR233208  Capsella bursa-pastoris George K. Helmkamp, E. A. Helmkamp 2010-4-7 15831 San Joaquin Northeast San Joaquin Valley, Collier Road, 0.1 mile west of its junction with CA-88, 1.83 mi. NE (27 deg. ) of Clements 47 Comment
  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
  UCR238404  Lamium amplexicaule George K. Helmkamp, E. A. Helmkamp 2012-4-7 18718 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
  UCR238405  Vulpia myuros George K. Helmkamp, E. A. 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 52 Comment
  UCR249964  Veronica peregrina subsp. xalapensis George K. Helmkamp, Elizabeth Helmkamp 2013-3-26 20229 San Joaquin East end of San Joaquin Valley, Escalon Bellota Road (J6), 6.1 miles south of its junction with CA-26, 0.52 mi. S of Copperopolis Rd. 52 Comment
  UCR253493  Amaranthus albus George K. Helmkamp, Elizabeth Helmkamp 2012-10-26 20070 San Joaquin San Joaquin Valley, Rock Creek, at East Sonora Road, 1.3 miles southeast of CA-4 50 Comment
  UCR253569  Quercus wislizeni var. wislizeni George K. Helmkamp 2014-3-18 22584 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
  CDA4338  Trifolium hirtum G. K. Helmkamp, E. A. Helmkamp 2002-4-21 7618 San Luis Obispo Central Coast; Santa Rosa Creek Rd., 11.2 mi E of Cambria. Comment
  CLARK-A1045-1357  Bellardia trixago George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay grassy field beside Turri Road, inland about 3 miles from Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1368  Medicago polymorpha George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1375  Spergula arvensis George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road at Morro Bay; Morro Bay S 7.5'Q Comment
  CLARK-A1045-1378  Lupinus nanus George K. Helmkamp 1978-4-23 San Luis Obispo Morro Bay Turri Road at Morro Bay; Morro Bay S 7.5'Q Comment
  IRVC29231  Eriogonum elongatum var. elongatum G. K. Helmkamp, E. A. Helmkamp 2004-10-8 8855 San Luis Obispo NE edge of Santa Lucia Wilderness Area; along Hi Mountain Road and beside Salt Creek, 8.0 mi. NE of Lopez Lake entrance Outer South Coast Range 399 Comment
  IRVC29247  Hemizonia paniculata G. K. Helmkamp, E. A. Helmkamp 2004-10-1 8826 San Luis Obispo 3.4 miles east of Lopez Lake along Hi Mountain Road and beside Arroyo Grande Creek Central Coast; Outer South Coast Range 171 Comment
  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
  RSA613942  Layia munzii George K. Helmkamp, E. A. Helmkamp 1997-3-8 1410 San Luis Obispo Carrizo Plain. 30.1 mi. NW of CA-166 on Soda Lake Rd; at San Diego Crk Rd and edge of Soda Lake. 701 Comment
  RSA614570  Lupinus nanus subsp. nanus George K. Helmkamp, E. A. Helmkamp 1997-3-8 1434 A San Luis Obispo Along CA-58 just W of Navajo Creek (W of Carrizo Plain) 564 Comment
  RSA666858  Stephanomeria cichoriacea George K. Helmkamp, E. A. Helmkamp 2000-9-2 5967 San Luis Obispo Profumo Canyon, 2.2 mi W of Los Osos Valley Rd. 137 Comment
  RSA709062  Silene gallica George K. Helmkamp 2005-4-17 9371 San Luis Obispo Central Coast: Corbett canyon, 2.3 miles N of Hwy CA-227 in Arroyo Grande. 81 Comment
  RSA710041  Camissonia micrantha George K. Helmkamp 2002-4-20 7452 San Luis Obispo Central Coast: 0.2 mi NW of Monarch Lane, Los Osos. 9 Comment
  SBBG93139  Trifolium hirtum G. K. Helmkamp 1990-4-17 s.n. San Luis Obispo San Luis Bay Drive and Avila Rd 15 Comment
  SD129234  Extriplex californica G. Helmkamp 1989-8-6 San Luis Obispo Baywood Park, at the south edge of Morro Bay. 3 Comment
  SD143861  Lythrum hyssopifolia G. K. Helmkamp 1997-6-20 2049 San Luis Obispo Ca. 0.2 mile northeast of Buckskin and Martingale in Los Osos. Comment
  SD148066  Chloropyron maritimum subsp. palustre G. K. Helmkamp, E. A. Helmkamp 2000-6-15 5686 San Luis Obispo Coastal strand between Los Osos and sand dunes W of the end of Howard street (Morro Bay South) 14 Comment
  SD148144  Eucrypta chrysanthemifolia var. chrysanthemifolia G. K. Helmkamp, E. A. Helmkamp 2001-5-2 6620 San Luis Obispo La Panza Range: CA-58, 11.2 miles east of Santa Margarita. 487 Comment
  SD148224  Monolopia stricta G. K. Helmkamp, E. A. Helmkamp 2001-5-2 6639 San Luis Obispo California Highway 58, 33 miles east of Santa Margarita near San Juan Creek. 487 Comment
  SD178167  Crocanthemum scoparium G. K. Helmkamp 2004-3-4 8323 San Luis Obispo Central Coast: Nipomo Mesa, along Pomeroy Rd, 0.2 mi north of Willow Rd, northwest of Nipomo. Occasional, in open grassy areas. 91 Comment
  SD178209  Epilobium brachycarpum G. K. Helmkamp 2003-10-24 8220 San Luis Obispo Central coast: El Campo Rd 0.1 mi east of Los Berros Rd, southeast of Arroyo Grande. Disturbed roadside in farmland. 46 Comment
  SD185194  Arctostaphylos glandulosa G. K. Helmkamp 1993-3-5 San Luis Obispo Just north of Montana de Oro State Park. 29 Comment
  SD232616  Madia gracilis G. Helmkamp 1996-5-25 1061 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
  SD232652  Silene gallica G. Helmkamp 1996-5-25 1059 San Luis Obispo Dried vernal pools between CA-1 and the ocean 1.5 miles north of Piedras Blancas lighthouse near the northern border of the county. 49 Comment
  SD232686  Lupinus bicolor G. Helmkamp 1996-5-27 1094 San Luis Obispo Los Osos. Oak woodland in fine sand NE of the corner of Martingale and Buckskin. 60 Comment
  SEINET1004399  Claytonia parviflora subsp. parviflora George K. Helmkamp 2004-1 8228 San Luis Obispo Central Coast: Nipomo Mesa, Pomeroy Rd, 1.1 mi N of Willow Rd. 130 Comment
  SEINET1004400  Veronica arvensis George K. Helmkamp 2004-1 8256 San Luis Obispo Central Coast: SE of Oceano along Halcyon Rd., just E of mesa View Dr. 76 Comment
  SEINET1906689  Lonicera involucrata var. ledebourii George K. Helmkamp 2004-1 8647 San Luis Obispo Central Coast: East entrace to Oso Flaco Lake. 9 Comment
  SEINET269232  Sanicula crassicaulis G. Helmkamp 1996-5-24 1035 San Luis Obispo State Park system north of Turri Rd. and 1.5 miles of South Bay Blvd. 95 Comment
  UC1792832  Deinandra increscens subsp. increscens G. K. Helmkamp 2003-10-24 8215 San Luis Obispo Central Coast: El Campo Rd 0.1 mi E of Los Berros Rd, SE of Arroyo Grande Comment
  UCD133335  Hypochaeris glabra G. K. Helmkamp; E. A. Helmkamp 2000-6-15 5683 San Luis Obispo San Luis Obispo County: Central coast: between Los Osos and sand dunes west of the end of Howard St. 15 Comment
  UCR100923  Poa secunda George K. Helmkamp, E. A. Helmkamp 1998-4-8 3211 San Luis Obispo Elkhorn Grade Rd, 6.3 mi. NW of jct with Calif. hwy 33 (roughly west of Maricopa) 549 Comment
  UCR103806  Salvia spathacea George K. Helmkamp 1997-3-8 1449 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
  UCR103808  Mimulus aurantiacus George K. Helmkamp 1997-3-8 1451 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
  UCR103963  Keckiella cordifolia George K. Helmkamp 1997-6-21 2058 San Luis Obispo Central Coast, Questa Ridge north of San Luis Obispo and 0.4 mi west of radio towers 854 Comment
Read comments
Mar 7 2012
  UCR104813  Lupinus albifrons George K. Helmkamp 1997-6-20 2057 San Luis Obispo Central Coast, Los Osos, c. 0.2 mi. NE of Buckskin & Martingale 27 Comment
  UCR115787  Castilleja affinis subsp. affinis George K. Helmkamp, E. A. Helmkamp 2000-4-19 5375 San Luis Obispo Central Coast, Irish Hills, See Canyon at Pippin Lane, about 1.5 mi north of San Luis Bay Dr. 76 Comment
  UCR115791  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 2000-4-19 5371 San Luis Obispo Central Coast, Irish Hills, See Canyon at Pippin Lane, about 1.5 mi north of San Luis Bay Dr. 76 Comment
  UCR115799  Sidalcea malviflora subsp. laciniata George K. Helmkamp, E. A. Helmkamp 2000-4-20 5406 San Luis Obispo Central Coast, road crest between See Canyon Road and Prefumo Canyon Road, SW of San Luis Obispo 320 Comment
  UCR118333  Isocoma menziesii var. vernonioides George K. Helmkamp, E. A. Helmkamp 2000-9-1 5950 San Luis Obispo Los Osos, c. 0.5 miles NW of Hazard Cyn., between Howard St. and sand dunes 6 Comment
  UCR118342  Senecio blochmaniae George K. Helmkamp, E. A. Helmkamp 2000-9-1 5954 San Luis Obispo Los Osos, c. 0.5 miles NW of Hazard Cyn., between Howard St. and sand dunes 6 Comment
  UCR118366  Phacelia imbricata subsp. imbricata George K. Helmkamp, E. A. Helmkamp 1998-6-30 4229 San Luis Obispo Central Coast, Irish Hills, SW of San Luis Obispo; Prefumo Cyn 2.2 mi SW of Los Osos Valley Rd. 137 Comment
  UCR118368  Anthemis George K. Helmkamp, E. A. Helmkamp 1998-7-1 4258 San Luis Obispo Central coastal strand., Beach parking lot, 0.4 mi north of Morro Rock. 3 Comment
  UCR118377  Trifolium hirtum George K. Helmkamp, E. A. Helmkamp 1998-7-1 4248 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon Road, 5.2 miles southwest of Los Osos Valley Road 244 Comment
  UCR118950  Cyperus esculentus George K. Helmkamp, E. A. Helmkamp 2000-9-1 5959 San Luis Obispo Los Osos, Martingale at Buckskin 30 Comment
  UCR119829  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2000-9-2 5969 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon, 2.2 mi west of Los Osos Valley Road 137 Comment
  UCR121527  Geranium dissectum George K. Helmkamp 2002-4-21 7484 San Luis Obispo Central Coast, Santa Rosa Creek Rd., 11.2 mi east of Cambria 396 Comment
  UCR121773  Phacelia douglasii George K. Helmkamp 2002-4-20 7463 San Luis Obispo Central Coast, Los Osos, 0.2 mile northwest of Monarch Lane 9 Comment
  UCR121973  Ceanothus cuneatus George K. Helmkamp 1993-3-5 s.n. San Luis Obispo Central Coast, Cuesta Ridge northwest of US-101 and the city of San Luis Obispo 671 Comment
  UCR122129  Pelargonium grossularioides George K. Helmkamp, E. A. Helmkamp 2000-4-21 5444 San Luis Obispo Santa Lucia Range, Santa Rosa Creek Road, 5.6 mi east of Cambria 76 Comment
  UCR122167  Chenopodium californicum George K. Helmkamp, E. A. Helmkamp 2000-4-22 5482 San Luis Obispo Central Coast, Los Osos, between the west end of Howard Ave. and Morro Bay sand dunes 15 Comment
  UCR122480  Clarkia purpurea George K. Helmkamp, E. A. Helmkamp 2001-5-2 6633 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122482  Eremalche parryi George K. Helmkamp, E. A. Helmkamp 2001-5-2 6629 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122493  Lomatium utriculatum George K. Helmkamp, E. A. Helmkamp 2001-5-2 6641 San Luis Obispo La Panza Range, Calif. Hwy 58, 33 miles east of Santa Margarita near San Juan Creek 488 Comment
  UCR122501  Collinsia bartsiifolia var. davidsonii George K. Helmkamp, E. A. Helmkamp 2001-5-2 6611 San Luis Obispo South Coast Range, La Panza Range, Calf Canyon, CA Hwy 58, 4.5 mi east of Santa Margarita 335 Comment
  UCR122509  Camissonia campestris subsp. campestris George K. Helmkamp, E. A. Helmkamp 2001-5-2 6622 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122510  Lupinus microcarpus var. microcarpus George K. Helmkamp, E. A. Helmkamp 2001-5-2 6624 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR122590  Lolium perenne subsp. multiflorum George K. Helmkamp 1995-11-23 115 San Luis Obispo Central Coast, Junction of Martingale Avenue and Buckskin Drive in Los Osos 46 Comment
  UCR122737  Veronica persica George K. Helmkamp, E. A. Helmkamp 1998-5-20 3887 San Luis Obispo Central Coast, Irish Hills, 3.1 miles SE of Los Osos Valley Rd on Clark Valley Rd., SE of Los Osos 351 Comment
  UCR122807  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 1998-5-19 3871 A San Luis Obispo Outer South Coast Range; Santa Lucia Range, southwest of Paso Robles along CA Hwy 46 at York Mountain Road 366 Comment
  UCR123153  Mimulus aurantiacus George K. Helmkamp, E. A. Helmkamp 2002-4-16 7402 San Luis Obispo Central Coast, Park Ridge 0.5 mi east of Morro Bay near Turri Road 76 Comment
  UCR123160  Sanicula crassicaulis George K. Helmkamp, E. A. Helmkamp 2002-4-16 7405 San Luis Obispo Central Coast, Park Ridge 0.5 mi east of Morro Bay near Turri Road 76 Comment
  UCR123552  Cakile maritima George K. Helmkamp, Elizabeth Helmkamp 1999-11-10 5332 A San Luis Obispo Central Coast, Morro Rock 9 Comment
  UCR131911  Frankenia salina George K. Helmkamp 2003-9-8 8129 San Luis Obispo Central Coast, Saltwater ocean inlet 0.2 mile SW of Oceano Airport 6 Comment
  UCR131919  Baccharis glutinosa George K. Helmkamp 2003-9-8 8127 San Luis Obispo Central Coast, Saltwater ocean inlet 0.2 mile SW of Oceano Airport 6 Comment
  UCR132016  Oxalis corniculata George K. Helmkamp 2003-7-31 8063 San Luis Obispo Central Coast, west edge of Nipomo Hill at junction of Cienaga Rd. and Valley View Road 15 Comment
  UCR132018  Lupinus truncatus George K. Helmkamp 2003-8-16 8072 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
  UCR132064  Camissonia micrantha George K. Helmkamp 2003-7-29 8039 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132065  Lupinus chamissonis George K. Helmkamp 2003-7-29 8043 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132753  Lolium perenne George K. Helmkamp 2003-7-29 8037 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR132760  Eriogonum fasciculatum var. foliolosum George K. Helmkamp 2003-7-29 8029 B San Luis Obispo Central Coast, 0.6 mi south of Nipomo Hill in Arroyo Grande area 46 Comment
  UCR134375  Lolium perenne George K. Helmkamp 2003-9-26 8182 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 Comment
  UCR134381  Sambucus mexicana George K. Helmkamp 2003-9-21 8168 San Luis Obispo Central Coast, Los Berros Rd, 0.9 mi SE of El Campo Rd., SE of Arroyo Grande 46 Comment
  UCR134389  Lotus scoparius var. scoparius George K. Helmkamp, E. A. Helmkamp 2001-4-29 6582 San Luis Obispo Irish Hills, Clark Valley Rd., 3.8 mi south of Los Osos Valley Rd., east of Los Osos 213 Comment
  UCR134397  Sisyrinchium bellum George K. Helmkamp, E. A. Helmkamp 2001-4-29 6591 San Luis Obispo Irish Hills, Clark Valley Rd., 4.2 miles south of Los Osos Valley Rd, E of Los Osos 274 Comment
  UCR134403  Phacelia californica George K. Helmkamp, E. A. Helmkamp 2001-4-29 6597 San Luis Obispo Irish Hills, Prefumo Cyn Rd., 2.8 miles west of Los Osos Valley Rd., SW of San Luis Obispo 91 Comment
  UCR134422  Polycarpon tetraphyllum George K. Helmkamp 2003-9-19 8143 San Luis Obispo Central Coast, Nipomo Mesa area. Pomeroy Rd, 0.2 mi south of Los Berros Rd. 76 Comment
  UCR134436  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2001-4-29 6564 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
  UCR134438  Melilotus indicus George K. Helmkamp 2003-8-16 8084 San Luis Obispo Central Coast, Nipomo Mesa at Willow Road, 0.5 mi east of Calif. Hwy 1, near Black Lake golf course 76 Comment
  UCR134450  Xanthium strumarium George K. Helmkamp 2003-9-26 8186 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 Comment
  UCR135962  Chorizanthe staticoides George K. Helmkamp, E. A. Helmkamp 2001-4-29 6561 San Luis Obispo South Coast Range, Irish Hills, Clark Valley Road, 2.8 miles south of Los Osos Valley Road, east of Los Osos 91 Comment
  UCR140073  Croton californicus George K. Helmkamp 2004-3-15 8362 San Luis Obispo Central Coast, edge of Nipomo Mesa overlooking Cienaga Valley, along Calif. Hwy 1 (Mesa View Dr.), 0.3 mi N of Halcyon Rd. 76 Comment
  UCR140126  Gnaphalium stramineum George K. Helmkamp 2004-3-13 8346 San Luis Obispo Central Coast, Nipomo Mesa, between Arroyo Grande and Nipomo, Willow Rd, 0.6 mi east of Calif. Hwy 1 91 Comment
  UCR140128  Vicia villosa subsp. varia George K. Helmkamp 2004-3-13 8345 San Luis Obispo Central Coast, Nipomo Mesa, between Arroyo Grande and Nipomo, Willow Rd, 0.6 mi east of Calif. Hwy 1 91 Comment
  UCR140130  Crassula connata George K. Helmkamp 2004-2-10 8267 San Luis Obispo Central Coast, southeast of Oceano along Halcyon Rd., 0.2 mi east of Mesa View Dr. 76 Comment
  UCR140132  Salix lasiolepis George K. Helmkamp 2004-2-6 8240 San Luis Obispo Central Coast, entrance to Oso Flaco Lake, SW of Nipomo 6 Comment
  UCR140371  Stellaria media George K. Helmkamp 2004-3-21 8384 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
  UCR140379  Vicia sativa subsp. sativa George K. Helmkamp 2004-3-15 8367 San Luis Obispo Central Coast, edge of Nipomo Mesa overlooking Cienaga Valley, along Calif. Hwy 1 (Mesa View Dr.), 0.3 mi N of Halcyon Rd. 76 Comment
  UCR140384  Castilleja exserta subsp. latifolia George K. Helmkamp 2004-3-15 8372 San Luis Obispo Central Coast, edge of Nipomo Mesa overlooking Cienaga Valley, along Calif. Hwy 1 (Mesa View Dr.), 0.3 mi N of Halcyon Rd. 76 Comment
  UCR140385  Lupinus truncatus George K. Helmkamp 2004-3-15 8373 San Luis Obispo Central Coast, edge of Nipomo Mesa overlooking Cienaga Valley, along Calif. Hwy 1 (Mesa View Dr.), 0.3 mi N of Halcyon Rd. 76 Comment
  UCR141124  Allium unifolium George K. Helmkamp, E. A. Helmkamp 2002-4-19 7627 San Luis Obispo Central Coast, 3.2 mi north of Piedras Blancas Lighthouse along CA Hwy 1 15 Comment
  UCR141944  Bromus diandrus George K. Helmkamp 2003-12-18 8231 San Luis Obispo Central Coast, Arroyo Grande, Courtland Ave. one block south of Grand Ave. 15 Comment
  UCR141945  Oxalis pes-caprae George K. Helmkamp 2003-12-18 8230 San Luis Obispo Central Coast, Arroyo Grande, Courtland Ave. one block south of Grand Ave. 15 Comment
  UCR14481  Cupressus macrocarpa George K. Helmkamp 1974-4-28 s.n. San Luis Obispo Central Coast, Baywood Park 30 Comment
  UCR146972  Haplopappus squarrosus George K. Helmkamp, E. A. Helmkamp 2004-10-8 8853 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness area, 0.9 mi east of Lopez Lake entrance then 3.3 mi N along Upper Lopez Cyn Rd. 166 Comment
  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
  UCR14908  Triglochin concinna George K. Helmkamp 1975-7-27 s.n. San Luis Obispo Central Coast, Morro Bay at Chorro Creek 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
  UCR158434  Salvia mellifera George K. Helmkamp 2004-6-15 8646 San Luis Obispo Central Coast, Between Oso Flaco Lake and the Pacific Ocean, c. 0.3 mi WNW of the lake 9 Comment
  UCR158435  Oenothera elata subsp. hookeri George K. Helmkamp 2004-6-15 8645 San Luis Obispo Central Coast, Between Oso Flaco Lake and the Pacific Ocean, c. 0.3 mi WNW of the lake 9 Comment
  UCR158569  Senecio blochmaniae George K. Helmkamp 2004-6-15 8639 San Luis Obispo Central Coast, Between Oso Flaco Lake and the Pacific Ocean, c. 0.3 mi WNW of the lake 9 Comment
  UCR158737  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2005-4-17 9367 San Luis Obispo Central Coast, Corbett Canyon, 2.3 miles north of Calif. Hwy 227 in Arroyo Grande 81 Comment
  UCR158741  Silene gallica George K. Helmkamp, E. A. Helmkamp 2005-4-17 9371 San Luis Obispo Central Coast, Corbett Canyon, 2.3 miles north of Calif. Hwy 227 in Arroyo Grande 81 Comment
  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
  UCR159842  Polypogon monspeliensis George K. Helmkamp, E. A. Helmkamp 2005-6-12 9628 San Luis Obispo South Coast Ranges, along Calif. Hwy 58 (Calf Canyon Hwy), 4.2 mi east of Santa Margarita 358 Comment
  UCR160128  Bloomeria crocea George K. Helmkamp, E. A. Helmkamp 2005-6-9 9577 San Luis Obispo South Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 7.8 miles northeast of Huasna Townsite Road 338 Comment
  UCR160143  Verbena lasiostachys var. lasiostachys George K. Helmkamp, E. A. Helmkamp 2005-6-9 9570 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
  UCR160379  Keckiella cordifolia George K. Helmkamp, E. A. Helmkamp 2005-6-9 9609 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
  UCR160384  Clarkia bottae George K. Helmkamp, E. A. Helmkamp 2005-6-9 9618 San Luis Obispo Central Coast Ranges, Arroyo Grande to Huasna Road along Arroyo Seco Creek, 9.6 miles NE of Huasna Townsite Road 378 Comment
  UCR160385  Centaurea melitensis George K. Helmkamp, E. A. Helmkamp 2005-6-9 9617 A 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
  UCR160566  Verbena lasiostachys var. lasiostachys George K. Helmkamp, E. A. Helmkamp 2005-6-9 9596 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
  UCR160568  Juncus bufonius var. bufonius George K. Helmkamp, E. A. Helmkamp 2005-6-7 9542 San Luis Obispo Outer South Coast Ranges, along Huasna Road, 1.3 mile west of Huasna Townsite Road 305 Comment
  UCR160577  Stephanomeria virgata subsp. pleurocarpa George K. Helmkamp, E. A. Helmkamp 2005-6-12 9651 San Luis Obispo Central Coast Range, along Calif. Hwy 58 (Carrizo Hwy), 22.2 miles east of Santa Margarita; near Camatta Creek 552 Comment
  UCR160748  Lasthenia microglossa George K. Helmkamp, E. A. Helmkamp 2001-5-2 6619 San Luis Obispo La Panza Range, Calif. Hwy 58, 11.2 miles east of Santa Margarita 488 Comment
  UCR160923  Camissonia strigulosa George K. Helmkamp, E. A. Helmkamp 2001-5-2 6614 San Luis Obispo South Coast Range, La Panza Range, Calf Canyon, CA Hwy 58, 4.5 mi east of Santa Margarita 335