Search Results — 2000 specimen records retrieved (1066 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
  RSA66106  Cardamine californica var. integrifolia Mabel Peirson 1926-3-13 6522 Alameda Strawberry Canyon, Berkeley. Comment
  RSA73312  Clarkia rubicunda subsp. blasdalei F. W. Peirson 1923-7-4 3791 Alameda Strawberry Creek, Berkeley. Comment
  RSA77090  Oemleria cerasiformis Mabel Peirson 1926-3-13 6521 Alameda Strawberry Canyon, Berkeley. Comment
  RSA85255  Physocarpus capitatus F. W. Peirson 1923-7-4 3751 Alameda Strawberry Creek, Berkeley. Comment
  RSA77182  Modiola caroliniana F. W. Peirson 1925-10-30 6470 Alameda Southeast part of Campus, Berkeley. Comment
  RSA79422A  Collinsia bartsiifolia var. davidsonii F. W. Peirson 1926-4-4 7089 Alameda Berkeley Hills, Crgmont Region Comment
  RSA80692  Boisduvalia densiflora F. W. Peirson 1925-9-20 6437 Alameda Hills back of Oakland. Comment
  RSA83935  Ranunculus californicus F. W. Peirson 1926-4-10 6629 Alameda Summit of El Cerrito Hill Comment
  CAS-BOT-BC22078  Carex heteroneura Frank W. Peirson 1935-7-24 11711 Alpine Lake Alpine. 2225 Comment
  CAS-BOT-BC268246  Eriogonum umbellatum var. nevadense Frank W. Peirson 1939-8-12 s.n. Alpine Frog Lake, Woods Lake Region Comment
  RSA423133  Eriogonum incanum F. W. Peirson 1935-7-29 11626 Alpine Woods Lake Region. Along trail in open country southeastward from lake. 2744 Comment
  RSA66216  Arabis lyallii F. W. Peirson 1939-8-11 12825 Alpine Near Round Top Lake, Woods Lake Region 2896 Comment
  RSA66730  Galium hypotrichium subsp. ebbettsense F. W. Peirson 1935-7-27 11605 Alpine Summit region S of Ebbet's Pass. Sierra Nevada. 2805 Comment
  RSA80065  Veronica cusickii F. W. Peirson 1937-7-23 12100 Alpine Along western edge of plateau southwest of Woods Lake 2805 Comment
  RSA84403  Bolandra californica F. W. Peirson 1935-7-26 11594 Alpine Hermit Valley, north slope above the mokelumne River 2439 Comment
  RSA88809  Carex davyi F. W. Peirson 1935-7-26 11714 Alpine South of Makelumne River, (Hermit Valley) 2439 Comment
  SBBG54419  Trisetum spicatum F. W. Peirson 1957-7-24 Alpine Winnemucca Lake, Woods Lake region 2743 Comment
  UC570532  Cryptantha affinis Frank W. Peirson 1935-7-26 11596 Alpine n slope above Mokelumne River; Hemit Valley 2438 Comment
  UC570584  Cryptantha simulans Frank W. Peirson 1935-7-28 11611 Alpine Red Lake 2407 Comment
  UC640223  Stellaria calycantha Frank W. Peirson 1939-8-14 12861 Alpine small e branch East Fork (Woods Lake Region); Woods Lake Region 2651 Comment
  UC640227  Parnassia californica Frank W. Peirson 1939-8-11 12824 Alpine Woods Lake Region, Round Top Round Top; Woods Lake Region, Round Top 2819 Comment
  UC640234  Claytonia nevadensis Frank W. Peirson 1939-8-11 12818 Alpine n slope Round Top; Woods Lake Region 2926 Comment
  UC640238  Mimulus breweri Frank W. Peirson 1939-8-12 12841 Alpine Frog Lake Woods Lake Region 2712 Comment
  UC640246  Lonicera involucrata var. involucrata Frank W. Peirson 1939-8-11 12830 Alpine along stream below Woods Lake 2545 Comment
  CAS-BOT-BC117790  Carex specifica Frank Warrington Peirson 1935-7-26 11713 Alpine Hermit Valley, Mountain slope S of the Mokelumne River in wet location. Comment
  CAS-BOT-BC532308  Horkelia fusca var. parviflora Frank W. Peirson 1939-8-13 12853 Alpine Woods Lake Region; below Frog Lake. 2682 Comment
  POM257987  Carex whitneyi F. W. Peirson 1935-7-28 11735 Alpine At foot of Red Lake. 2409 Comment
  RSA0077930  Orobanche corymbosa subsp. corymbosa Frank W. Peirson 1939-8-10 12808 Alpine Above Winnemucca Lake, Wood's Lake Region. 2774 Comment
  RSA69388  Thalictrum fendleri F. W. Peirson 1939-8-13 12859 Alpine Along the south shore of Woods Lake. 2561 Comment
  RSA71910  Navarretia capillaris F. W. Peirson 1939-8-14 12863 Alpine Woods Lake region, Sierra Nevada 2622 Comment
  RSA71921  Ipomopsis congesta F. W. Peirson 1935-7-27 11608 Alpine Summit region of Ebbett Pass, Sierra Nevada. 2744 Comment
  RSA72665  Balsamorhiza sagittata F. W. Peirson 1935-7-25 11586 Alpine About 2 miles north of lake; Lake Alpine Region 2530 Comment
  RSA73737  Navarretia breweri F. W. Peirson 1937-7-23 12111 Alpine Southwest of Woods Lake. 2744 Comment
  RSA74779  Phacelia ramosissima var. eremophila F. W. Peirson 1937-7-24 12115 Alpine Shores of Winnemucca Lake, Woods Lake Region, Sierra Nevada. 2744 Comment
  RSA766160  Eriogonum umbellatum F. W. Peirson 1935-7-24 s.n. Alpine Lake Alpine region. N of the lake. 2287 Comment
  RSA77587  Mertensia ciliata var. stomatechoides F. W. Peirson 1939-8-10 12794 Alpine North shore of Winnemucca Lake, Woods Lake Region, Sierra Nevada 2744 Comment
  RSA78544  Carex luzulifolia F. W. Peirson 1935-7-29 13600 Alpine Near foot of Elephant Rock, Woods Lake Region. 2820 Comment
  RSA79625  Cryptantha echinella F. W. Peirson 1935-7-28 11611 Alpine along margin of Red Lake 2409 Comment
  RSA79980  Castilleja applegatei subsp. pallida F. W. Peirson 1939-8-10 12801 Alpine Winnemucca Lake, Woods Lake Region. 2774 Comment
  RSA80091  Mimulus tilingii F. W. Peirson 1939-8-14 12865 Alpine Along East Fork, Woods Lake Region. 2622 Comment
  RSA80461  Mimulus moschatus var. longiflorus F. W. Peirson 1939-8-14 12864 Alpine Along East Fork, Woods Lake Region. 2622 Comment
  RSA84319  Isoetes bolanderi F. W. Peirson s.n. Alpine Margin of Woods Lake, Sierra Nevada. Comment
  RSA84444  Anemone occidentalis F. W. Peirson 1937-7-23 12105 Alpine Along western edge of plateau southwest of Woods Lake 2805 Comment
  RSA85189  Sparganium angustifolium subsp. emersum F. W. Peirson 1939-8-10 12813 Alpine Around edge of Woods Lake. 2561 Comment
  RSA88664  Carex luzulifolia F. W. Peirson 1935-7-30 11723 Alpine small riparian meadows along stream west of Woods Lake 2683 Comment
  RSA90616  Stenotus acaulis F. W. Peirson 1937-7-25 12122 Alpine East of Round Top Lake, Woods Lake Region. 2866 Comment
  RSA91012  Erigeron barbellulatus F. W. Peirson 1935-7-25 11587 Alpine Open summit of ridge ca. 2 miles N of Lake Alpine 2561 Comment
  RSA91189  Lupinus arbustus subsp. silvicola F. W. Peirson 1939-8-10 12799 Alpine Above Winnemucca Lake, Woods Lake Region. 2774 Comment
  RSA91674  Carex athrostachya F. W. Peirson 1935-7-24 11709 Alpine Near foot of Lake Alpine. 2226 Comment
  RSA93009  Erigeron barbellulatus F. W. Peirson 1937-7-26 12129 Alpine East of Winnemucca Lake, Woods lake region 2835 Comment
  RSA93942  Artemisia arbuscula subsp. arbuscula F. W. Peirson 1937-7-26 12128 Alpine East of Winnemucca Lake, Woods lake region 2835 Comment
  RSA93961  Ericameria suffruticosa F. W. Peirson 1935-7-27 11600 Alpine Summit region S of Ebbet's Pass. Sierra Nevada. 2805 Comment
  RSA94485  Arnica chamissonis subsp. foliosa F. W. Peirson 1935-7-31 11641 Alpine East of Carson Pass, Sierra Nevada. Comment
  RSA94502  Arnica cordifolia F. W. Peirson 1939-8-14 12862 Alpine On ridge between the East Fork and Woods lake 2652 Comment
  RSA94892  Arnica fulgens F. W. Peirson 1935-7-30 11636 Alpine N slope of Roundtop, Woods Lake Region. 2865 Comment
  RSA94970  Tetradymia canescens F. W. Peirson 1939-8-12 12835 Alpine Near Frog Lake, Woods Lake Region. 2713 Comment
  RSA95137  Crepis intermedia F. W. Peirson 1935-7-25 11582 Alpine Below summit of main ridge, north of Lake Alpine, Sierra Nevada 2530 Comment
  RSA97285  Pteryxia terebinthina var. californica F. W. Peirson 1939-8-10 12804 Alpine Winnemucca Lake, Woods Lake Region 2744 Comment
  SD87528  Navarretia breweri Frank W. Peirson 1935-7-27 11607 Alpine Summit region of Ebbets Pass 2743 Comment
  SD87650  Floerkea proserpinacoides Frank W. Peirson 1935-7-29 11624 Alpine Not far from west base of Elephants Back. Woods Lake Region. 2819 Comment
  CAS-BOT-BC239447  Penstemon rydbergii var. oreocharis Frank W. Peirson 1926-6-21 6772 Butte Butte Meadow, Humboldt Road Comment
  RSA80101  Mimulus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road. Comment
  RSA80351  Conium maculatum F. W. Peirson 1926-6-20 6761 Butte 5 miles west of Chico Comment
  RSA92160  Scirpus diffusus F. W. Peirson 1926-6-21 6769 Butte Butte Meadow, Humboldt Road. Comment
  RSA95063  Hemizonia fitchii F. W. Peirson 1923-7-21 3901 Butte North of Chico. Comment
  RSA80469  Mimulus nanus var. mephiticus F. W. Peirson 1935-7-23 11556 Calaveras Big Meadow, North Fork of Stanislaus River region. 1982 Comment
  SEINET180133 Image available Deschampsia elongata Frank W. Peirson 1935-7-23 11554 Calaveras Big Meadow N. Fork Stanislaus River Region. 1981 Comment
  RSA80117  Mimulus breweri F. W. Peirson 1935-7-23 11542 Calaveras North Fork of Stanislaus River Comment
  RSA69276  Maianthemum racemosum subsp. amplexicaule Frank W. Peirson, Mabel B. Peirson 1925-4-10 6636 Contra Costa Boulevard near San Pablo Reservoir Comment
  RSA90945  Trifolium fucatum var. fucatum F. W. Peirson, Mabel B. Peirson 1926-4-10 6638 Contra Costa Between Walnut Creek and Martinez. Comment
  JEPS15830  Lomatium howellii F. W. Peirson 1923-7-13 3948 Del Norte 4 mi. n.e. Gasquet Comment
  RSA68716  Lilium maritimum Frank W. Peirson 1923-7-13 3690 Del Norte 4 miles northeast of Gasquet Comment
  RSA68717  Lilium bolanderi Frank W. Peirson 1923-7-13 3689 Del Norte 10 miles north of Gasquet Comment
  UC589681  Lomatium howellii Frank W. Peirson 1923-7-13 3948 Del Norte 4 mi. n.e. Gasquet Comment
  CAS-BOT-BC300992  Eriophyllum lanatum var. achilleoides Frank W. Peirson 1923-7-13 3913 Del Norte 7 miles northeast of Gasquet on the Grants Pass road Comment
  CAS-BOT-BC318597  Monardella purpurea Frank W. Peirson 1923-7-13 3835 Del Norte 4 miles NE of Gasquet on the Grantqq Pass Road.. Comment
  RSA0087573  Linnaea borealis subsp. longiflora Frank W. Peirson 1923-7-13 3865 Del Norte About 2 miles south of Oregon line on road between Grants Pass and Gasquet. Comment
  RSA69282  Tofieldia glutinosa subsp. occidentalis F. W. Peirson 1923-7-13 3686 Del Norte 10 miles northeast of Gasquet Comment
  RSA83392  Monardella purpurea F. W. Peirson 1923-7-13 3835 Del Norte 4 miles northeast of Gasquet. Comment
  RSA86268  Aspidotis densa F. W. Peirson 1923-7-12 3632 Del Norte 10 miles northeast of Crescent City Comment
  RSA92673  Eriophyllum lanatum var. achilleoides F. W. Peirson 1923-7-13 3913 Del Norte 7 miles N of Gasquet. Comment
  RSA94734  Senecio macounii F. W. Peirson 1923-7-13 3926 Del Norte 4 miles northeast of Gasquet. Comment
  RSA95381  Sidalcea malviflora subsp. nana F. W. Peirson 1923-7-13 3775 Del Norte 4 miles northeast of Gasquet. Comment
  JEPS51273  Polygonum polygaloides subsp. kelloggii Frank W. Peirson 1925-7-4 El Dorado Fallen Leaf Lake; along road to Glen Alpine 1981 Comment
  LA38993  Mimulus nanus var. mephiticus Frank W. Peirson; 1925-7-1 6174 El Dorado State Line, Lake Tahoe 1920 Comment
  PASA520  Calochortus nudus Frank W. Peirson 1925-7-3 El Dorado Glen Alpine Creek Basin Comment
  POM87038  Acer glabrum var. torreyi F. W. Peirson 1925-7-4 6267 El Dorado Fallen Leaf Lake, Tahoe Region, lake shore near Fallen Leaf Lodge 1951 Comment
  RSA613153  Muhlenbergia richardsonis F. W. Peirson 1935-8-2 11644 El Dorado Near State Line, Lake Tahoe 1905 Comment
  RSA66063  Rorippa subumbellata F. W. Peirson 1925-7-1 6187 El Dorado Lake Tahoe, at State Line 1921 Comment
  RSA84419  Caltha howellii F. W. Peirson 1925-7-7 6318 El Dorado Echo Lakes Divide, Sierra Nevada. 2530 Comment
  RSA86792  Rosa woodsii var. ultramontana F. W. Peirson 1937-7-28 12132 El Dorado Richardsons, Lake Tahoe 1905 Comment
  UC501508  Fragaria virginiana subsp. platypetala Frank W. Peirson 1925-7-4 6266 El Dorado road along e shore Fallen Leaf Lake 1950 Comment
  POM175536  Maianthemum racemosum subsp. amplexicaule Frank W. Peirson 1925-7-3 6241 El Dorado Glen Alpine Creek Basin. Sierra Nevada. 2439 Comment
  POM87076  Heterotheca villosa var. minor F. W. Peirson 1925-7-5 6283 El Dorado Near Fallen Leaf Lodge. 1951 Comment
  POM87168  Arnica parryi subsp. sonnei F. W. Peirson 1925-7-3 6243 El Dorado Glen Alpine Creek Basin. Sierra Nevada. 2134 Comment
  RSA0016041  Hippuris vulgaris F. W. Peirson 1925-7-2 6211 El Dorado South side of Lake Tahoe. 1899 Comment
  RSA0020893  Ribes viscosissimum F. W. Peirson 1925-7-3 6227 El Dorado Grass Lake, Glen Alpine Creek Basin, Sierra Nevada. Comment
  RSA100239  Porterella carnosula F. W. Peirson 1925-7-1 6191 El Dorado State Line, Lake Tahoe. 1951 Comment
  RSA66327  Polygonum phytolaccifolium F. W. Peirson 1925-7-2 6221 El Dorado Glen Alpine road, 1/2 mile above Fallen Leaf, Sierra Nevada Comment
  RSA72022  Polemonium californicum F. W. Peirson 1925-7-7 6306 El Dorado Trail by upper Echo Lake. 2287 Comment
  RSA72117  Epilobium oregonense F. W. Peirson 1925-7-1 6197 El Dorado State Line, Lake Tahoe. Sierra Nevada. 1905 Comment
  RSA77494  Angelica breweri F. W. Peirson 1911-8-9 9544 El Dorado Found where East trail and Middle trail join, Mt. Tallac 2622 Comment
  RSA77768  Viola glabella F. W. Peirson 1925-7-3 6246 El Dorado Glen Alpine Creek Basin, Sierra Nevada. 2210 Comment
  RSA78520  Carex nebrascensis F. W. Peirson 1937-7-28 13607 El Dorado State Line, Lake Tahoe. 1905 Comment
  RSA79751  Penstemon deustus subsp. deustus F. W. Peirson 1925-7-2 6219 El Dorado Glen Alpine Ranch, 0.25 miles above Fallen Leaf Lake, Sierra Nevada. 1982 Comment
  RSA80099  Mimulus torreyi F. W. Peirson 1925-7-4 6263 El Dorado Road on east shore of Fallen Leaf Lake, Sierra Nevada. 1951 Comment
  RSA80342  Orthocarpus hispidus F. W. Peirson 1925-7-1 6193 El Dorado State Line, Lake Tahoe. Sierra Nevada. 1905 Comment
  RSA80846  Pedicularis attollens F. W. Peirson 1925-7-1 6195 El Dorado State Line, Lake Tahoe. Sierra Nevada. 1905 Comment
  RSA82583  Stachys rigida subsp. rivularis F. W. Peirson 1931-8-7 9530 El Dorado Glen Alpine Creek Basin 1982 Comment
  RSA88801  Carex subfusca F. W. Peirson 1935-7-31 11724 El Dorado Sandy shores of Emerald Bay, Lake Tahoe. 1905 Comment
  RSA90401  Lotus unifoliolatus F. W. Peirson 1925-7-2 6208 El Dorado South side of Lake Tahoe. 1905 Comment
  RSA90922  Erigeron compositus F. W. Peirson 1925-7-3 6496 El Dorado Glen Alpine Creek Basin, Sierra Nevada. 2287 Comment
  RSA91957  Glyceria striata F. W. Peirson 1931-8-7 9533 El Dorado Trail to Grass Lake above Glen Alpine. 2134 Comment
  RSA93155  Aster intermedius F. W. Peirson 1937-7-28 12131 El Dorado Back of the Memler property; Lake Tahoe, Sierra Nevada 1905 Comment
  RSA95073  Microseris nutans F. W. Peirson 1925-7-2 6210 El Dorado South side of Lake Tahoe, Sierra Nevada Comment
  SEINET7564646 Image available Carex lenticularis var. lipocarpa F. W. Peirson 1935-7-31 11725 El Dorado Lake Tahoe, at Emerald Bay. 1905 Comment
  CAS-BOT-BC294571  Erigeron breweri var. breweri Frank W. Peirson 1921-8-9 2521 Fresno Aspen Meadow, South Fork San Joaquin River 2514 Comment
  CAS-BOT-BC350015  Oreostemma alpigenum var. andersonii F. W. Peirson 1921-8-17 2542 Fresno Upper basin of South Fork of Kings River, below Cardinal Lake, Sierra Nevada 3352 Comment
  CAS-BOT-BC428634  Micranthes bryophora F. W. Peirson 1921-8-15 2626 Fresno Cartridge Creek, Middle Fork of Kings River, Sierra Nevada 3352 Comment
  POM12539  Gaultheria humifusa F. W. Peirson 1921-8-13 2530 Fresno Grouse Meadows. 2515 Comment
  RSA68684  Zigadenus venenosus var. venenosus Frank W. Peirson 1921-8-13 2821 Fresno Grouse Meadows, Middle Fork of Kings River, Sierra Nevada. 2515 Comment
  RSA76996  Acer glabrum var. torreyi F. W. Peirson 1921-8-14 2638 Fresno Le Conte Canyon, Middle Fork of Kings River 2439 Comment
  RSA82064  Cordylanthus tenuis F. W. Peirson 1939-8-22 12878 Fresno abundant along west shore of Florence Lake, Sierra Nevada Comment
  RSA84976  Potamogeton gramineus F. W. Peirson 1914-8-9 1538 Fresno Florence Lake, Sierra Nevada. Comment
  SBBG54434  Lessingia leptoclada F. W. Peirson 1919-8-19 1257 Fresno S Fork of Kings River, near Kanawyers 1447 Comment
  UC501632  Lessingia leptoclada Frank W. Peirson 1919-8-19 1257 Fresno near Kanawyers (canyon floor); South Fork Kings River 1447 Comment
  RSA0063075  Heuchera rubescens var. alpicola F. W. Peirson 1911-8-3 s.n. Fresno Rae Lake, Sierra Nevada. 3232 Comment
  RSA0124953  Senecio integerrimus var. exaltatus F. W. Peirson 1921-8-13 2560 Fresno At Grouse Meadows, Sierra Nevada. 2514 Comment
  RSA0129116  Arabis holboellii var. retrofracta F. W. Peirson 1917-8-12 1912 Fresno Grouse Meadows, Middle Fork Kings River, Sierra Nevada 2515 Comment
  RSA61495  Trifolium agrarium F. W. Peirson 1939-8-18 12868 Fresno Near upper end of Huntington Lake. Comment
  RSA65526  Sagina saginoides F. W. Peirson 1921-8-17 4157 Fresno South Fork of Kings River; Sierra Nevada. 3125 Comment
  RSA65878  Polygonum minimum F. W. Peirson 1921-8-17 1798 a Fresno S Fork of Kings River, Sierra Nevada. 3125 Comment
  RSA66726  Galium trifidum var. pacificum F. W. Peirson 1919-8-18 1186 Fresno Summit Meadow. Kings River Region. Sierra Nevada. 2439 Comment
  RSA72087  Microsteris gracilis subsp. gracilis F. W. Peirson 1925-3-23 5644 Fresno Road between Coalinga and Parkfield, Inner South Coast Ranges 915 Comment
  RSA77802  Hackelia mundula F. W. Peirson 1914-8-13 1007 Fresno Fish Creek, San Joaquin Tributary, Sierra Nevada Comment
  RSA80083  Mimulus whitneyi F. W. Peirson 1911-7-29 1135 Fresno Trail from Hume to Summit Meadow, Sierra Nevada. Comment
  RSA82245  Castilleja miniata F. W. Peirson 1919-8-22 1151 Fresno Woods Creek, Sierra Nevada. 2530 Comment
  RSA85552  Cheilanthes intertexta F. W. Peirson 1939-8-21 12876 Fresno Among rocks above the South Fork of the San Joaquin River 2317 Comment
  RSA85607  Ivesia muirii F. W. Peirson 1921-8-8 1965 Fresno W slope of Piute Pass, Sierra Nevada. 3415 Comment
  RSA85758  Potentilla glandulosa var. nevadensis F. W. Peirson 1921-8-10 1973 Fresno Evolution Creek, Sierra Nevada Creek. 2957 Comment
  RSA90402  Lotus unifoliolatus F. W. Peirson 1925-10-22 6468 Fresno San Joaquin River at Boulevard. [Valley Blvd?] Comment
  RSA90417  Lotus oblongifolius F. W. Peirson 1919-8-22 2003 Fresno Woods Creek 2195 Comment
  RSA90929  Trifolium monanthum F. W. Peirson 1919-8-22 557 Fresno Woods Creek, Sierra Nevada 2530 Comment
  RSA90975  Erigeron breweri F. W. Peirson 1921-8-9 2521 Fresno Aspen Meadow. S Fork of the San Joaquin River. Sierra Nevada. 2515 Comment
  RSA90983  Erigeron elmeri F. W. Peirson 1917-8-12 1287 Fresno Grouse Meadows, Middle Fork Kings River, Sierra Nevada 2515 Comment
  RSA91003  Erigeron petiolaris F. W. Peirson 1921-8-11 2759 Fresno SW slope of Mt. Darwin, Evolution Lake region, Sierra Nevada 3506 Comment
  RSA93013  Lasthenia microglossa F. W. Peirson 1925-3-23 5637 Fresno Between Coalinga and Parkfield, Inner South Coast Ranges 915 Comment
  RSA93145  Aster occidentalis var. occidentalis F. W. Peirson 1914-08 1271 Fresno South Fork of San Joaquin River, Sierra Nevada. Comment
  RSA93316  Aster breweri F. W. Peirson 1921-8-10 2750 Fresno Evolution Creek, Sierra Nevada 2957 Comment
  RSA93339  Aster alpigenus F. W. Peirson 1921-8-17 2542 Fresno Upper basin of South Fork of Kings River, below Cardinal Lake. 3354 Comment
  RSA93962  Ericameria suffruticosa F. W. Peirson 1921-8-10 1242 Fresno Evolution Creek, Sierra Nevada. 3201 Comment
  RSA94190  Artemisia ludoviciana subsp. incompta F. W. Peirson 1939-8-20 12874 Fresno West side of Florence Lake. 2226 Comment
  RSA94697  Senecio werneriifolius F. W. Peirson 1919-8-6 1441 Fresno Junction Pass, Sierra Nevada. 3963 Comment
  RSA97267  Oxypolis occidentalis F. W. Peirson 1917-8-14 808 Fresno Dusey Creek. Comment
  RSA99363  Symphoricarpos acutus F. W. Peirson 1939-8-22 12877 Fresno West shore of Florence Lake, Sierra Nevada. 2226 Comment
  CAS-BOT-BC235879  Keckiella corymbosa Frank W. Peirson 1926-7-13 7060 Humboldt Mad River, vicinity of Blue Lake Comment
  RSA69331  Rhododendron occidentale var. paludosum F. W. Peirson 1923-7-11 3801 Humboldt 7 miles N of Arcata. Comment
  RSA70587  Sisyrinchium californicum Frank W. Peirson 1923-7-11 3693 Humboldt 7 miles N of Arcata. Comment
  RSA77350  Ceanothus thyrsiflorus F. W. Peirson 1941-7-28 13106 Humboldt at the Hwy Observation point about 1 mile S of Orick Comment
  RSA80349  Glehnia littoralis subsp. leiocarpa F. W. Peirson 1923-7-11 3946 Humboldt 18 miles north of Eureka Comment
  RSA80459  Mimulus moschatus var. sessilifolius F. W. Peirson 1926-7-12 7038 Humboldt Orick. Comment
  RSA84982  Potamogeton natans F. W. Peirson 1923-7-11 3640 Humboldt 20 miles north of Eureka. Comment
  RSA85287  Ranunculus flammula var. ovalis F. W. Peirson 1923-7-11 3726 Humboldt 7 miles N of Arcata. Comment
  RSA87372  Agrostis exarata F. W. Peirson 1941-7-28 13116 Humboldt Patrick's Point State Park Comment
Read comments
Jun 4 2015
  SD87720  Keckiella corymbosa Frank W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec Comment
  POM175550  Downingia elegans var. corymbosa F. W. Peirson 1923-7-10 3871 Humboldt About 6 miles N of Garbersville. Comment
  POM98598  Malacothrix floccifera F. W. Peirson 1926-7-14 s.n. Humboldt Sandy shores of Eel River about 5 miles south of Scotia Comment
  RSA0022786  Monardella villosa subsp. subserrata F. W. Peirson 1926-7-13 7050 Humboldt Near Blue Lake, Mad River Comment
  RSA68979  Plantago maritima F. W. Peirson 1923-7-11 3857 Humboldt Flats north of Eureka. Comment
  RSA82291  Scutellaria antirrhinoides F. W. Peirson 1932-7-7 10259 Humboldt Willow Creek. A few miles above town of that name. Comment
  RSA88658  Carex laeviculmis F. W. Peirson 1941-7-23 13091 Humboldt Van Damme State Park. Along the creek about 2 miles from camp. Comment
  RSA91333  Rupertia physodes F. W. Peirson 1941-7-27 13095 Humboldt Elk Valley Forestry Camp. Comment
  RSA91498  Trifolium dubium F. W. Peirson 1923-7-11 3622 Humboldt 20 miles north of Eureka Comment
  RSA92676  Eriophyllum lanatum var. arachnoideum F. W. Peirson 1926-7-12 7029 Humboldt West slope of Coast Range back of Orick. Comment
  RSA93878  Tanacetum camphoratum F. W. Peirson 1923-7-11 3917 Humboldt 18 miles N. of Eureka Comment
  RSA94822  Hypochaeris glabra F. W. Peirson 1923-7-9 3934 Humboldt State Park on Eel River Comment
  CAS-BOT-BC178631  Astragalus coccineus Frank W. Peirson 1922-4-13 2877 Imperial Mountain Springs, below store. 792 Comment
  JEPS15014  Loeseliastrum schottii Frank W. Peirson 1927-4-16 7218 Imperial foot of Mountain Springs Grade Comment
  RSA415438  Astragalus coccineus F. W. Peirson 1922-4-13 2877 Imperial Mountain Springs, western edge of Colorado Desert 792 Comment
  RSA64702  Eriogonum thomasii F. W. Peirson 1922-4-23 2874 Imperial Foot of Mtn Springs Grade Comment
  RSA69969  Abronia villosa var. villosa F. W. Peirson 1927-4-15 7205 Imperial near Colorado River, Ft. Yuma Comment
  RSA74718  Nama hispida var. revoluta F. W. Peirson 1927-4-15 7199 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  RSA77813  Pholisma sonorae Mabel Peirson 1932-3-21 9781 Imperial Holtville to Yuma Rd. 61 Comment
  RSA79885  Datura discolor F. W. Peirson 1922-4-13 2897 Imperial Foot of Mountain Springs Grade, w. Imperial County. Comment
  RSA80274  Cryptantha maritima var. pilosa F. W. Peirson 1941-4-8 13073 Imperial Road to gorge turns N from boulevard a few miles E of Mtn Springs Grade Comment
  RSA85176  Ephedra trifurca F. W. Peirson 1922-3-21 9774 Imperial Near summit of Sand Hills, east of Holtville. Comment
  SD87608  Astragalus palmeri F. W. Peirson 1922-4-13 2899 Imperial Mountain Springs Grade, western edge of the Colorado Desert 1064 Comment
  SD87782  Achyronychia cooperi Frank W. Peirson 1935-4-15 11459 Imperial 4 miles north of the Laguna Dam Comment
  SD87812  Tiquilia canescens var. pulchella Frank W. Peirson 1935-4-16 11464 Imperial 4-S Pass, eastern Imperial County, a few rods west of pass, in rough rocky terrain. (IPB 10/07) Comment
  RSA0121532  Apiastrum angustifolium F. W. Peirson 1927-4-16 7210 Imperial Foot of Mountain Springs Grade (road, San Diego to El Centro). Comment
  RSA0126953  Mentzelia longiloba var. longiloba F. W. Peirson 1927-4-15 7201 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  RSA90172  Astragalus lentiginosus var. borreganus F. W. Peirson 1932-3-21 9961 Imperial East edge of Sand Hill, east of Imperial Valley 60 Comment
  RSA91428  Marina parryi F. W. Peirson 1932-3-22 9802 Imperial Midway Well 152 Comment
  RSA91437  Psorothamnus schottii F. W. Peirson 1927-4-16 7215 Imperial Foot of Mountain Springs Grade, Western Imperial County Comment
  RSA93717  Brickellia arguta var. odontolepis F. W. Peirson 1922-4-13 2881 Imperial Mountain Springs Grade, road from El Centro to San Diego, W Imperial Co. 549 Comment
  RSA93864  Encelia frutescens F. W. Peirson 1922-4-12 2875 Imperial 2 miles E of Coyote Well, on El Centro to San Diego road. Comment
  RSA93951  Hymenoclea salsola F. W. Peirson 1932-3-21 9789 Imperial Desert 10 mi. N of Ogilby. 152 Comment
  RSA991825  Cenchrus echinatus F. W. Peirson 1922-4-12 2913 Imperial 28 miles south of Coachella. Comment
  CAS-BOT-BC111185  Trichophorum clementis Frank Warrington Peirson 1934-7-27 11300 Inyo Rock Creek Lake Basin, Heart Lake Meadow 3215 Comment
  CAS-BOT-BC118686  Carex proposita Frank Warrington Peirson 1933-8-5 10844 Inyo Rock Creek Lake Basin 3322 Comment
  CAS-BOT-BC118688  Carex proposita Frank Warrington Peirson 1933-8-15 13586 Inyo Above Ruby Lake, Rock Creek Lake Basin. Comment
  CAS-BOT-BC132782  Salix arctica F. W. Peirson 1939-8-5 12996 Inyo East Chain, Rock Creek Lake Basin Comment
  CAS-BOT-BC162101  Bromus porteri Frank W. Peirson 1934-7-28 13476 Inyo Rock Creek Lake Basin. 3352 Comment
  CAS-BOT-BC189468  Cryptantha circumscissa var. circumscissa Frank W. Peirson 1931-7-31 9485 Inyo Rock Creek Lake Basin, roadside below Heart Lake 3169 Comment
  CAS-BOT-BC202141  Lupinus padre-crowleyi F. W. Peirson 1921-8-6 2551 Inyo Between Big Pine & Baker Crs. 3124 Comment
  CAS-BOT-BC22204  Carex helleri Frank W. Peirson 1934-7-22 s.n. Inyo Rock Creek Lake Basin. Above the Glacial lakes. 3474 Comment
  CAS-BOT-BC22481  Acamptopappus shockleyi Frank W. Peirson 1932-5-6 9903 Inyo Wildrose Canyon, Panamint Mountains 1143 Comment
  CAS-BOT-BC305829  Heliomeris multiflora var. nevadensis Frank W. Peirson 1932-5-7 9912 Inyo North Fork Hanaupah Canyon, Panamint Mts. 1828 Comment
  CAS-BOT-BC333029  Senecio scorzonella Frank W. Peirson 1940-8-14 12982 Inyo Box Lake, Rock Creek Lake Basin 3230 Comment
  CAS-BOT-BC34110  Carex breweri Frank W. Peirson 1930-8-5 9095 Inyo Rock Creek Lake Basin. In gorge east of Mono Pass. 3627 Comment
  CAS-BOT-BC389515  Silene menziesii Frank W. Peirson 1933-8-19 s.n. Inyo Rock Creek Lake Basin 3322 Comment
  CAS-BOT-BC41864  Draba breweri Frank W. Peirson 1929-7-22 8532 Inyo Bishop Creek Region. Trail southward from Long Lake. 3413 Comment
  CAS-BOT-BC418708  Eschscholzia glyptosperma Frank W. Peirson 1928-4-1 7771 Inyo (Canyon floor about 4 miles below Bradbury Well.) Old Confidence Mill to Bradbury Well, Death Valley Region Comment
  CAS-BOT-BC84895  Artemisia cana subsp. bolanderi Frank W. Peirson 1931-7-30 9107 Inyo Rock Creek Lake Basin, foot of escarpment west of Heart Lake 3230 Comment
  IRVC910515  Triglochin palustris F. W. Peirson 1937-1 12180 Inyo Rock Creek Lake Basin. flat area, in red iron deposit. 3293 Comment
  JEPS13377  Antennaria pulchella Frank W. Peirson 1930-8-7 9120 Inyo valley southward from Ruby Lake; Rock Creek Basin 3444 Comment
  JEPS19203  Lorandersonia peirsonii Frank W. Peirson 1937-8-8 Inyo along summit Transverse Ridge; Rock Creek Lake Basin 3352 Comment
  JEPS21060  Viguiera reticulata Frank W. Peirson 1928-4-3 7820 Inyo Emigrant Pass Death Valley Region 914 Comment
  JEPS22390  Eriogonum rosense Frank W. Peirson 1937-8-11 Inyo above East Recess; Rock Creek Lake Basin 3474 Comment
  JEPS22397  Monardella odoratissima subsp. glauca Frank W. Peirson 1937-8-11 12196 Inyo Rock Creek Lake Basin above the East Recess. 3505 Comment
  JEPS27456  Luzula subcongesta Frank W. Peirson 1937-8-5 12198 Inyo on shore Ruby Lake; Rock Creek Lake Basin, shore Ruby Lake 3398 Comment
  JEPS37131  Sphaeromeria cana Frank W. Peirson 1937-8-11 Inyo below East Recess Rock Creek Lake Basin; , East Recess 3352 Comment
  JEPS50876  Silene bernardina Frank W. Peirson 1931-7-20 9447 Inyo top of escarpment near Heart Lake (Rock Creek Lake Basin); , near Heart Lake 3261 Comment
  JEPS50885  Silene bernardina Frank W. Peirson 1934-7-24 Inyo Heart Lake Rock Creek Lake Basin, Heart Lake 3352 Comment
  JEPS60679  Ranunculus eschscholtzii var. oxynotus Frank W. Peirson 1931-7-26 9450 Inyo Valley south of Long Lake (near stream); Rock Creek Lake Basin 3276 Comment
  JEPS64005  Trichophorum clementis Frank W. Peirson 1934-7-27 11300 Inyo wetter part Heart Lake Meadow; Rock Creek Lake Basin, Heart Lake Meadow 3215 Comment
Read comments
Aug 6 2012
  PASA2300  Stylocline micropoides Frank W. Peirson 1928-4-2 Inyo Near Bradbury Well, Death Valley Region Comment
  POM171930  Muhlenbergia richardsonis F. W. Peirson 1930-8-3 9070 Inyo Rock Creek Lake Basin 3201 Comment
  POM203749  Draba lemmonii F. W. Peirson 1934-7-21 9453 Inyo Rock Creek Lake Basin; Cirque on east side of canyon 3445 Comment
  POM203750  Gentianella tenella F. W. Peirson 1934-7-23 9482 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3216 Comment
  POM203757  Juncus drummondii F. W. Peirson 1934-7-23 11278 Inyo Rock Creek Lake Basin 3293 Comment
  POM203877  Erigeron tener F. W. Peirson 1934-7-28 11289 Inyo Rock Creek Lake Basin along the south slope of the Transverse Glacial Ridge. 3293 Comment
  POM256933  Festuca minutiflora F. W. Peirson 1934-7-23 s.n. Inyo Rock Creek Lake Basin, east side of canyon 3262 Comment
  RSA0126013  Arabis dispar F. W. Peirson 1932-5-7 9918 Inyo North fork of Hanaupah Canyon, Panamint Mountains. 2134 Comment
  RSA65114  Eriogonum lobbii F. W. Peirson 1929-7-20 8500 Inyo Trail from South Lake to Green Lake, Bishop Creek 3293 Comment
  RSA65118  Eriogonum incanum F. W. Peirson 1934-7-23 11277 Inyo Rock Creek Lake Basin, east side of canyon 3293 Comment
  RSA66133  Draba praealta F. W. Peirson 1921-8-7 5327 Inyo East slope of Piute Pass, Sierra Nevada. 3354 Comment
  RSA66137  Draba lemmonii F. W. Peirson 1934-7-27 11325 Inyo Sloping gravelley plain above Mono Pass, Rock Creek Lake Basin. 3735 Comment
  RSA66140  Draba sierrae F. W. Peirson 1940-8-5 12949 Inyo Rock Creek Lake Basin: steep east wall of canyon near Transverse Ridge 3415 Comment
  RSA66482  Oxystylis lutea F. W. Peirson 1928-4-1 7775 Inyo Bradbury Well, south of Death Valley. Comment
  RSA66796  Boechera stricta F. W. Peirson 1934-7-27 11298 Inyo East Chain Lakes, Rock Creek Lake Basin 3232 Comment
  RSA67124  Galium hypotrichium subsp. hypotrichium F. W. Peirson 1931-7-19 9497 Inyo In cirque on east slope of Rock Creek Lake Basin 3354 Comment
  RSA68705  Lilium kelleyanum Frank W. Peirson 1933-8-13 10796 Inyo Heart Lake Meadow, Rock Creek Lake Basin, Sierra Nevada. 3232 Comment
  RSA69384  Thalictrum alpinum F. W. Peirson 1939-8-5 12892 Inyo South base of Transverse Ridge, Rock Creek Lake Basin 3293 Comment
  RSA69617  Triglochin palustris F. W. Peirson 1937-8-6 12180 Inyo East side of Rock Creek Lake Basin 3262 Comment
  RSA69680  Allenrolfea occidentalis F. W. Peirson 1928-4-3 7816 Inyo North of Furnace Creek, Death Valley Comment
  RSA69735  Luzula orestera F. W. Peirson 1930-8-7 9116 Inyo Valley southward from Ruby Lake, Rock Creek Lake Basin. 3476 Comment
  RSA72244  Camissonia claviformis subsp. funerea F. W. Peirson 1928-4-3 7818 Inyo McLean Spring, Death Valley. Comment
  RSA74847  Phacelia frigida subsp. dasyphylla F. W. Peirson 1939-8-3 9053 Inyo Hills about Heart Lake, Rock Creek Lake Basi Sierra Nevada 3201 Comment
  RSA75691  Camissonia kernensis subsp. gilmanii F. W. Peirson 1928-4-2 7799 Inyo About 1 mile east of Bradbury Well, Death Valley Region. Comment
  RSA77644  Eucnide urens F. W. Peirson 1917-8-1 2075 Inyo Independence, Owens Valley. Comment
  RSA78486  Salix planifolia F. W. Peirson 1937-8-8 13529 Inyo North base of Tranverse Ridge, Rock Creek Lake Basin. Comment
  RSA78495  Comandra umbellata subsp. californica F. W. Peirson 1946-4-19 13537 Inyo Titus Canyon, Death Valley. Comment
  RSA78512  Carex helleri F. W. Peirson 1940-8-9 13562 Inyo east side of Rock Creek Lake Basin 3354 Comment
  RSA78629  Salix lasiolepis F. W. Peirson 1936-4-6 13526 Inyo Lower Titus Canyon, Death Valley. Comment
  RSA79614  Cryptantha circumscissa var. hispida F. W. Peirson 1913-8-22 1029 Inyo Taboose Pass, Sierra Nevada. Comment
  RSA79771  Cryptantha virginensis F. W. Peirson 1927-7-24 7544 Inyo Westgard Pass, Inyo-White Mtns. 2134 Comment
  RSA79917  Cryptantha glomeriflora F. W. Peirson 1933-8-19 11146 Inyo Near the Heart Lake Meadow, Rock Creek Lake Basin 3216 Comment
  RSA80045  Castilleja nana F. W. Peirson 1931-7-18 9487 Inyo Upper basin near Chickenfoot Lake, Rock Creek Lake Basin. 3277 Comment
  RSA80113  Mimulus bigelovii var. bigelovii F. W. Peirson 1932-5-7 9927 Inyo North Fork of Hanaupah Canyon, Panamint Mts. 1829 Comment
  RSA80361  Perideridia parishii subsp. latifolia F. W. Peirson 1921-8-7 2519 Inyo East slope of Piute Pass, Sierra Nevada. 3354 Comment
  RSA80369  Mimulus leptaleus F. W. Peirson 1934-7-27 11286 Inyo Open level along trail to Mono Pass, Rock Creek Lake Basin. 3384 Comment
  RSA80471  Mimulus leptaleus F. W. Peirson 1931-7-31 9489 Inyo Below Heart Lake, Rock Creek Lake Basin. 3186 Comment
  RSA85245  Spiraea densiflora var. splendens F. W. Peirson 1930-8-5 9085 Inyo Trail to Mono Pass on ridge west of Heart Lake, Rock Creek Lake Basin. 3354 Comment
  RSA85611  Ivesia muirii F. W. Peirson 1929-7-24 8556 Inyo Green Lake Valley, Bishop Creek 3277 Comment
  RSA85636  Potentilla pensylvanica var. strigosa F. W. Peirson 1931-7-21 9474 Inyo Near Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA85711  Potentilla breweri var. viridis F. W. Peirson 1917-8-21 1971 Inyo Baker Creek north of Big Pine Creek. 3201 Comment
  RSA85736  Potentilla jepsonii F. W. Peirson 1931-7-21 9474 Inyo Meadow at Heart Lake, Rock Creek Lake Basin 3201 Comment
  RSA86211  Cheilanthes parryi F. W. Peirson 1932-5-7 9921 Inyo North fork of Hanaupah Canyon, Panamint Mountains. 2134 Comment
  RSA86349  Pinus jeffreyi F. W. Peirson 1931-7-30 9396 Inyo Along Ruby Stream. Rock Creek Lake Basin, at 10,800 ft. 3293 Comment
  RSA86359  Pinus longaeva F. W. Peirson 1939-8-5 12773 Inyo Near Heart Lake, Rock Creek Lake Basin 3232 Comment
  RSA86621  Purshia tridentata var. tridentata F. W. Peirson 1929-7-24 8554 Inyo Slope below Green Lake, Bishop Creek region. 3354 Comment
  RSA86683  Cercocarpus ledifolius F. W. Peirson 1931-7-25 9470 Inyo Heart Lake, Rocky Creek Lake Basin, northern Inyo county 3232 Comment
  RSA86687  Leymus triticoides F. W. Peirson 1938-7-8 12415 Inyo Near bank of Lone Pine Creek, west of Alabama Hills. Comment
  RSA87362  Agrostis hyemalis F. W. Peirson 1931-7-31 9612 Inyo Rock Creek Lake Basin 3171 Comment
  RSA87462  Elymus trachycaulus subsp. trachycaulus F. W. Peirson 1933-8-7 10866 Inyo Long Lake, Rock Creek Lake Basin, northern Inyo County. 3247 Comment
  RSA88678  Carex helleri F. W. Peirson 1934-7-21 11398 Inyo East slope of Rock Creek Lake Basin, northern Inyo County. 3476 Comment
  RSA88707  Carex hoodii F. W. Peirson 1934-7-24 11306 Inyo West of Heart Lake, Rock Creek Lake Basin, northern Inyo County. 3354 Comment
  RSA88712  Carex helleri F. W. Peirson 1929-7-21 8525 Inyo Below unnamed lake, canyon south of South Lake, Bishop Creek. 3201 Comment
  RSA88720  Carex helleri F. W. Peirson 1933-8-18 10843 Inyo Southeast of Long Lake, Rock Creek Lake Basin, northern Inyo County. 3293 Comment
  SBBG28979  Erythranthe breweri F. W. Peirson 1940-8-10 12963 Inyo Ruby Lake, above Rock Crk Lake 3398 Comment
  SBBG54412  Juncus parryi F. W. Peirson 1933-8-4 Inyo Rock Crk Lake Basin, S of Long Lake 3352 Comment
  SD87581  Boechera platysperma Frank W. Peirson 1934-7-23 11297 Inyo Rock Creek Lake Basin 3295 Comment
  UC1026449  Carex subnigricans F. W. Peirson 1937-8-5 13583 Inyo upper Ruby Rock Creek Lake Basin 3490 Comment
  UC1516290  Mimulus breweri Frank W. Peirson 1933-8-6 10774 Inyo on the escarpment w Heart Lake Meadow; Rock Creek Lake Basin 3230 Comment
  UC483090  Salix exigua Frank W. Peirson 1932-5-6 9900 b Inyo along canyon bottom Wild Rose Canyon; Panamint Mts., Wild Rose Canyon 1143 Comment
  UC501639  Cryptantha confertiflora Frank W. Peirson 1932-5-8 9935 Inyo Wild Rose Canyon Panamint Mts. 1828 Comment
  UC511741  Luzula cascadensis Frank W. Peirson 1933-8-13 10803 Inyo Rock Creek Lake Basin 3230 Comment
  UC511752  Oreostemma alpigenum var. andersonii Frank W. Peirson 1933-8-21 Inyo strip meadow about Upper Ruby Lake; Rock Creek Lake Basin 3505 Comment
  UC511761  Delphinium polycladon Frank W. Peirson 1933-8-3 10782 Inyo Ruby Lake Rock Cr. Lake Basin 3398 Comment
  UC511762  Chaenactis alpigena Frank W. Peirson 1933-8-8 Inyo steep mountain slope w of Heart Lake; Rock Creek Lake Basin 3474 Comment
  UC511795  Rorippa palustris Frank W. Peirson 1933-7-28 10709 Inyo Rock Creek 1371 Comment
  UC511826  Eriogonum ovalifolium var. nivale Frank W. Peirson 1933-8-9 Inyo Rock Creek Lake Basin 3474 Comment
  UC511843  Ledum glandulosum Frank W. Peirson 1933-8-4 Inyo Rock Creek Lake Basin, at foot of Mount Dade, Glacial Lakes Glacial Lakes; Rock Creek Lake Basin, Mount Dade, Glacial Lakes 3383 Comment
  UC511853  Vaccinium uliginosum subsp. occidentale Frank W. Peirson 1933-8-12 Inyo Glacial Lakes, at foot of Mt. Dade Rock Creek Lake Basin, Mt. Dade 3383 Comment
  UC511867  Silene menziesii Frank W. Peirson 1933-8-19 Inyo near Ruby Falls (Rock Creek Lake Basin); Rock Creek Lake Basin 3322 Comment
  UC511885  Trisetum spicatum Frank W. Peirson 1933-8-15 Inyo below Mono Pass; Rock Creek Basin 3505 Comment
  UC643204  Silene sargentii Frank W. Peirson 1940-8-16 Inyo e wall of Canyon Rock Creek Lake Basin (Rock Creek Lake Basin) 3291 Comment
  UC643208  Erigeron glacialis var. glacialis Frank W. Peirson 1937-8-8 Inyo Rock Creek Lake Basin, small stream bottom along north slope of the Transverse Ridge,in the Hidden Lake Valley 3200 Comment
  UC643230  Mimulus breweri Frank W. Peirson 1940-8-6 Inyo mountain slope w Heart Lake; Rock Creek Lake Basin 3291 Comment
  UC672233  Erigeron algidus Frank W. Peirson 1921-8-8 2525 Inyo Piute Pass. east slope. 3276 Comment
  UCD59146  Bromus carinatus var. marginatus F. W. Peirson 1940-8-6 s.n. Inyo Rock Creek Lake Basin. Slope west of Hart Lake. 3276 Comment
Read comments
Aug 19 2014
  UCD60267  Bromus porteri F. W. Peirson 1934-7-28 13476 Inyo Rock Creek Lake Basin, Transverse Ridge. 3352 Comment
  UCD66401  Festuca saximontana var. purpusiana F. W. Peirson 1934-7-27 Inyo Rock Creek Lake Basin. In the Mono Gorge below Mono Pass. 3627 Comment
  CAS-BOT-BC117124  Carex spectabilis Frank Warrington Peirson 1933-8-12 s.n. Inyo Rock Creek Lake Basin. Rocky slopes above Glacial Lakes. 3474 Comment
  CAS-BOT-BC117129  Carex spectabilis Frank Warrington Peirson 1934-7-22 s.n. Inyo Rock Creek Lake Basin. Above Glacial Lakes. 3566 Comment
  CAS-BOT-BC187243  Astragalus lentiginosus var. ineptus Frank W. Peirson 1929-7-24 8544 Inyo Inconsolable Range, Bishop Creek 3581 Comment
  CAS-BOT-BC196740  Lupinus breweri var. bryoides F. W. Peirson 1921-8-6 2549 Inyo Coyote Creek Meadows 3048 Comment
  CAS-BOT-BC20929  Carex heteroneura Frank W. Peirson 1937-8-7 12210 Inyo Rock Creek Lake Basin. Lower part of Heart Lake Meadow. 3200 Comment
  CAS-BOT-BC218750  Cryptantha humilis Frank W. Peirson 1929-7-20 8508 Inyo Bishop Creek Region. On median ridge in Green Lake Valley. 3291 Comment
  CAS-BOT-BC272596  Eriogonum spergulinum var. reddingianum Frank W. Peirson 1931-7-17 9434 Inyo Rock Creek Lake Basin, Ruby Falls 3322 Comment
  CAS-BOT-BC279493  Chaenactis alpigena Frank W. Peirson 1930-8-9 9156 Inyo Rock Creek Lake Basin 3474 Comment
  CAS-BOT-BC30396  Ageratina occidentalis F. W. Peirson 1930-8-8 9138 Inyo Rock parapet west of Heart Lake, Rock Creek Lake Basin 3230 Comment
  CAS-BOT-BC317078  Packera pauciflora Frank Warrington Peirson 1930-8-3 9054 Inyo On shores of Heart Lake, Rock Creek Lake Basin. 3200 Comment
  CAS-BOT-BC389804  Silene sargentii Frank W. Peirson 1937-8-7 s.n. Inyo Rock Creek Lake Basin. In the main gorge south of Long Lake 3291 Comment
  CAS-BOT-BC399931  Thalictrum sparsiflorum Frank W. Peirson 1940-8-5 s.n. Inyo Margin of lake on east side of canyon and at base of Transverse Ridge; Rock Creek Lake Basin, Sierra Nevada 3261 Comment
  CAS-BOT-BC401939  Gilia ochroleuca subsp. ochroleuca F. W. Peirson 1928-4-2 7805 Inyo 18 miles south of Ryan, Death Valley Region Comment
  CAS-BOT-BC418716  Eschscholzia glyptosperma Frank W. Peirson 1930-4-15 8711 Inyo 6 miles south of Death Valley Junction 609 Comment
  JEPS22391  Stellaria calycantha Frank W. Peirson 1937-8-6 12181 Inyo Rock Creek Lake Basin; in the Grass Bog on the e side 3291 Comment
  PASA1498  Eriogonum spergulinum Frank W. Peirson 1921-8-6 Inyo Near Coyote Pass 3200 Comment
  PASA1736  Erigeron radicatus Frank W. Peirson 1930-8-3 Inyo Rock Cr. Lake Basin 3200 Comment
  POM171931  Gayophytum diffusum subsp. parviflorum F. W. Peirson 1930-8-7 9127 Inyo Rock Creek Lake Basin, Sierra Nevada 3399 Comment
  POM254396  Phacelia frigida subsp. dasyphylla F. W. Peirson 1940-7-31 s.n. Inyo Rock Creek Lake Basin, Inyo County, Heart Lake Meadow. 3354 Comment
  POM257499  Carex heteroneura F. W. Peirson 1937-8-4 s.n. Inyo Escarpment at Heart Lake, Rock Creek Lake Basin. 3232 Comment
  POM257955  Carex pellita F. W. Peirson 1937-8-6 s.n. Inyo East side of Rock Creek Lake Basin 3293 Comment
  POM257988  Carex jonesii F. W. Peirson 1937-8-4 s.n. Inyo Escarpment at Heart Lake, Rock Creek Lake Basin. 3232 Comment
  POM87164  Tiquilia nuttallii F. W. Peirson 1925-6-25 s.n. Inyo 10 miles N of Independence Comment
  RSA0001040  Castilleja peirsonii F. W. Peirson 1930-8-4 9078 Inyo Upper Rock Creek Lake Basin. 3293 Comment
  RSA0012633  Senecio scorzonella F. W. Peirson 1921-8-7 2770 Inyo East slope of Piute Pass, Sierra Nevada. 3354 Comment
  RSA0017255  Gilia ochroleuca subsp. ochroleuca F. W. Peirson 1928-4-2 7805 Inyo 18 miles south of Ryan, Death Valley region Comment
  RSA0029706  Delphinium polycladon F. W. Peirson 1933-8-3 10782 Inyo meadow on west side of Rock Creek Lake Basin 3399 Comment
  RSA0029710  Delphinium polycladon F. W. Peirson 1911-1 635 Inyo Sierra Nevada Comment
  RSA0031395  Phlox condensata F. W. Peirson 1934-7-27 11287 Inyo Crest above Mono Pass and east of it. Rock Creek Lake Basin, Sierra Nevada. 3780 Comment
  RSA0117257  Collinsia parviflora F. W. Peirson 1930-8-6 9109 Inyo Rock Creek Lake Basin, northern Inyo County. 3079 Comment
  RSA0125050  Senecio integerrimus var. exaltatus F. W. Peirson 1930-8-3 9050 Inyo On margin of Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA65530  Arenaria kingii subsp. compacta F. W. Peirson 1937-8-11 12193 Inyo Trail to the East Recess, Rock Creek Lake Basin. 3354 Comment
  RSA65833  Descurainia californica F. W. Peirson 1933-8-3 10781 Inyo West side of Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA66008  Eriogonum rosense F. W. Peirson 1917-8-20 1752 Inyo Sierra Nevada: Green Lake region. Coyote Creek Promontory 3354 Comment
  RSA66194  Arabis holboellii var. retrofracta F. W. Peirson 1937-7-24 12112 Inyo Open slopes along trail to Winnemucca Lake Rock Creek Lake Basin. 2683 Comment
  RSA66767  Arabis divaricarpa F. W. Peirson 1956-7-24 9456 Inyo Foot of escarpment near Heart Lake, Rock Creek Lake Basin. 3232 Comment
  RSA69257  Kalmia polifolia subsp. microphylla F. W. Peirson 848 Inyo Owens Valley. Comment
  RSA69602  Sagittaria latifolia F. W. Peirson 1914-4-27 1545 Inyo Bishop. Comment
  RSA70287  Juncus nevadensis F. W. Peirson 1931-8-1 9418 Inyo Small lake across the ridge eastward from Long Lake, Rock Creek Lake Basin. 3247 Comment
  RSA70292  Juncus nevadensis F. W. Peirson s.n. Inyo East side of Rock Creek Lake Basin. 3293 Comment
  RSA70575  Sarcodes sanguinea F. W. Peirson 460 Inyo Owens Valley. Comment
  RSA73279  Linanthus pungens subsp. pulchriflorus F. W. Peirson 1930-8-5 9087 Inyo Rocky place above Ruby Lake. Rock Creek Lake Basin, Sierra Nevada. 3445 Comment
  RSA73670  Leptosiphon pachyphyllus F. W. Peirson 1924-7-23 11275 Inyo Heart Lake Meadow, Rock Creek Lake Basin 3232 Comment
  RSA75359  Phacelia fremontii F. W. Peirson 1932-5-5 9876 Inyo Red lava formation, foot of red volcanic cone north of Little Lake, western Inyo Co. 1098 Comment
  RSA77880  Tiquilia nuttallii F. W. Peirson 1925-6-22 6030 Inyo Sherwin Grade N of Bishop. 1677 Comment
  RSA78503  Carex jonesii F. W. Peirson 1940-8-17 13571 Inyo Heart Lake Meadow, Rock Creek Lake Basin. northern Inyo County. 3232 Comment
  RSA78507  Carex fissuricola F. W. Peirson 1940-8-17 13557 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3201 Comment
  RSA78511  Carex pellita F. W. Peirson 1940-8-17 13561 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3201 Comment
  RSA78536  Carex pellita F. W. Peirson 1937-8-8 13592 Inyo Escarpment at Heart Lake, Rock Creek Lake Basin, northern Inyo County. 3232 Comment
  RSA78548  Carex utriculata F. W. Peirson 1940-8-17 13569 Inyo Heart Lake Meadow, Rock Creek Lake Basin. northern Inyo County. 3232 Comment
  RSA78550  Carex F. W. Peirson 1940-8-17 13554 Inyo Heart Lake Meadow, Rock Creek Lake Basin. Comment
  RSA79772  Cryptantha flavoculata F. W. Peirson 1932-5-8 9934 Inyo Wild Rose Canyon, Panamint Mts. 2134 Comment
  RSA79857  Penstemon speciosus F. W. Peirson 8496 Inyo Trail from South Lake to Green Lake, Bishop Creek. 3262 Comment
  RSA80212  Plagiobothrys hispidus F. W. Peirson 1917-8-20 5212 Inyo South Fork of Bishop Creek east slope of Sierra Nevada 2439 Comment
  RSA80254  Mohavea breviflora F. W. Peirson 1928-4-3 7815 Inyo Furnace Creek, one mile from Death Valley. 0 Comment
  RSA84214  Sedum lanceolatum F. W. Peirson 1931-7-22 9459 Inyo rocky places high above the south shore of Ruby Lake, Rock Creek Lake Basin, 3445 Comment
  RSA84259  Parnassia californica F. W. Peirson 1930-8-8 9148 Inyo West of Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA84312  Isoetes bolanderi F. W. Peirson 1930-8-3 9045 Inyo NW of Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA84320  Isoetes bolanderi F. W. Peirson 1933-8-22 s.n. Inyo Heart Lake Meadow, Rock Creek Lake Basin, Sierra Nevada 3201 Comment
  RSA84603  Heuchera rubescens var. rydbergiana F. W. Peirson 1931-7-24 9462 Inyo west side of Long Lake, Rock Creek Lake Basin. 3277 Comment
  RSA85048  Cystopteris fragilis F. W. Peirson 1935-7-17 11520 Inyo Rocky location about Heart Lake Meadow, Rock Creek Lake Basin, Sierra Nevada, northern Inyo Co. 3216 Comment
  RSA88768  Carex exserta F. W. Peirson 1935-7-17 11705 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3216 Comment
  RSA90204  Bromus marginatus F. W. Peirson 1931-7-30 9407 Inyo Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA90243  Astragalus layneae F. W. Peirson 1928-4-2 7809 Inyo On road to Dante's View, Death Valley region. 1220 Comment
  RSA90253  Astragalus lentiginosus var. ineptus F. W. Peirson 1929-7-20 8507 Inyo Green Lake Valley, Bishop Creek region, Sierra Nevada 3293 Comment
  RSA90267  Agrostis variabilis F. W. Peirson 1934-7-23 12616 Inyo Above East Chain Lakes, Rock Creek Lake Basin, Sierra Nevada, extreme northern Inyo County. 3262 Comment
  RSA90705  Astragalus nuttallianus var. imperfectus F. W. Peirson 1932-5-7 9917 Inyo North fork of Hanaupah Canyon, Panamint Mountains, Alt. 7000 ft. 2134 Comment
  RSA90860  Carex subnigricans F. W. Peirson 1933-9-10 10828 Inyo Above Ruby Falls, Rock Creek Lake Basin. 3384 Comment
  RSA90874  Carex utriculata F. W. Peirson 1933-8-11 10848 Inyo East Chain Lakes, Rock Creek Lake Basin, northern Inyo County. 3201 Comment
  RSA90962  Erigeron clokeyi F. W. Peirson 1933-8-15 10802 Inyo Rocky ridge along one of E chain Lakes, Rock Creek lake Basin. 3201 Comment
  RSA90965  Erigeron breweri var. porphyreticus F. W. Peirson 1921-8-19 1283 Inyo Taboose Pass, Sierra Nevada 2439 Comment
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Nov 12 2010
  RSA91255  Lupinus excubitus var. excubitus F. W. Peirson 1932-5-7 9929 Inyo North fork of Hanaupah Canyon, Panamint Mts. 1982 Comment
  RSA91510  Oreobolopsis clementis F. W. Peirson 1933-8-10 10766 Inyo Above Ruby Lake, Rock Creek Lake Basin, Northern Inyo Co. 3384 Comment
  RSA91522  Poa F. W. Peirson 1940-8-19 12934 Inyo in the defile crossing the Transverse Ridge, Rock Creek Lake Basin, Northern Inyo. 3262 Comment
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Dec 19 2011
  RSA91587  Carex deflexa var. boottii F. W. Peirson 1937-8-7 12211 Inyo Southwest part of Rock Creek Lake Basin, northern Inyo County. 3354 Comment
  RSA91591  Carex buxbaumii F. W. Peirson 1940-8-19 12946 Inyo Rock Creek Basin, northern Inyo Co., defile cutting across lower part of Transverse Ridge. Comment
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Dec 19 2011
  RSA91612  Carex congdonii F. W. Peirson 1930-8-5 9106 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3598 Comment
  RSA91619  Trisetum spicatum F. W. Peirson 1930-8-7 9133 Inyo Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA91620  Trisetum spicatum F. W. Peirson 1929-7-19 8478 Inyo South Lake, Bishop Creek 3018 Comment
  RSA91636  Carex breweri F. W. Peirson 1930-8-5 9095 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin, northern Inyo County. Comment
  RSA91654  Trisetum spicatum F. W. Peirson 1933-8-21 10870 Inyo Ruby Lake, Rock Creek Lake Basin, northern Inyo County. 3506 Comment
  RSA91664  Trisetum spicatum F. W. Peirson 1940-8-6 12941 Inyo Heart Lake Meadow, Rock Creek Lake Basin 3201 Comment
  RSA91835  Calamagrostis canadensis Frank W. Peirson 1940-8-13 12943 Inyo Near Ruby Stream, Heart Lake Meadow, Rock Creek Lake Basin. 3232 Comment
  RSA92115  Carex senta F. W. Peirson 1933-8-11 10834 Inyo East chain lake, Rock Creek Lake Basin, northern Inyo County. 3201 Comment
  RSA92327  Poa secunda F. W. Peirson 1930-8-5 9105 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3598 Comment
  RSA92482  Helianthus annuus subsp. jaegeri F. W. Peirson 1933-7-28 10708 Inyo [Lower] Rock Creek 1372 Comment
  RSA92667  Eriophyllum lanatum var. integrifolium F. W. Peirson 1917-8-20 1388 Inyo Region of Green Lake, tributary to the South Fork of Bishop Creek 3354 Comment
  RSA92708  Salix orestera F. W. Peirson 1929-7-19 8491 Inyo Upper Bishop Creek at South Lake, east slope of Sierra Nevada. 3018 Comment
  RSA93001  Erigeron clokeyi F. W. Peirson 1939-8-4 12771 Inyo Near one of the E Chain lakes, Rock Creek lake Basin, Northern Inyo County. 3293 Comment
  RSA93002  Erigeron pygmaeus F. W. Peirson 1933-8-5 10777 Inyo Upper part of the Transverse Ridge, Rock Creek Lake Basin. 3415 Comment
  RSA93223  Tonestus peirsonii F. W. Peirson 1919-8-27 1404 Inyo Sawmill Canyon east slope of Sierra Nevada. 2957 Comment
  RSA93234  Ericameria discoidea F. W. Peirson 1929-7-24 8557 Inyo Lower part of Green Lake Valley where the trail turns S for S Lake, Bishop Creek region, Sierra Nevada 3259 Comment
  RSA93735  Amphipappus fremontii F. W. Peirson 1932-5-6 9898 Inyo 8 mi. E of Darwin 1220 Comment
  RSA93819  Chaenactis douglasii var. douglasii F. W. Peirson 1921-8-6 2709 Inyo Trail out of Big Pine to Baker Creek, Sierra Nevada. 3049 Comment
  RSA93969  Pyrrocoma sessiliflora F. W. Peirson 1933-8-23 10851 Inyo About 6 miles south of Lone Pine 1128 Comment
  RSA94112  Psathyrotes annua F. W. Peirson 1938-7-8 12422 Inyo Sherwin Grade, north of Bishop. 1890 Comment
  RSA94154  Hulsea algida F. W. Peirson 1930-8-4 9079 Inyo In the pass leading into upper Rock Creek Lake Basin from the SE 3354 Comment
  RSA94201  Monoptilon bellioides F. W. Peirson 1940-3-21 s.n. Inyo Road junct at N side of Death Valley. Comment
  RSA94509  Arnica mollis F. W. Peirson 1930-8-3 9049 Inyo Heart Lake, Rock Creek Lake Basin. 3200 Comment
  RSA94513  Arnica nevadensis F. W. Peirson 1930-8-5 9099 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3628 Comment
  RSA94517  Arnica mollis F. W. Peirson 1940-9-10 12999 Inyo First Glacial Lake, Rock Creek Lake basin 3384 Comment
  RSA94865B  Arnica diversifolia F. W. Peirson 1935-7-17 11523 Inyo Shores of Long Lake, Rock Creek Lake Basin; Sierra Nevada. 3262 Comment
  RSA94887  Arnica chamissonis subsp. foliosa F. W. Peirson 1940-8-4 12980 Inyo Near the second enchelon lake near Transverse Ridge Rock Creek Lake Basin 3262 Comment
  RSA94994  Agoseris aurantiaca F. W. Peirson 1931-7-25 9512 Inyo Along stream below Heart Lake, Rock Creek Lake Basin 3171 Comment
  RSA95106  Crepis acuminata F. W. Peirson 1931-7-18 9514 Inyo Detritus below Long Lake, Rock Creek Lake Basin. 3232 Comment
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Nov 12 2010
  RSA97263  Lomatium torreyi F. W. Peirson 1933-8-7 10771 Inyo slope west of Long Lake, Rock Creek Lake Basin, northern Inyo [Co.] 3354 Comment
  RSA99357  Symphoricarpos vaccinioides F. W. Peirson 1929-7-19 8487 Inyo Bishop Creek at South Lake. 3018 Comment
  SD87800  Achillea millefolium Frank W. Peirson 1940-7-31 12969 Inyo Rock Creek Lake Basin. 3200 Comment
  SEINET7561386 Image available Carex helleri Frank W. Peirson 1934-7-23 s.n. Inyo Rock Creek Lake Basin. 3292 Comment
  SEINET7562320 Image available Carex illota Frank W. Peirson 1933-8-4 10831 Inyo Rock Creek Lake Basin. 3261 Comment
  SEINET7571410 Image available Carex phaeocephala Frank W. Peirson 1934-7-24 s.n. Inyo Rock Creek Lake Basin. 3353 Comment
  SEINET7576424 Image available Carex straminiformis Frank W. Peirson 1933-8-5 10844 Inyo Rock Creek Lake Basin. 3322 Comment
  UC511742  Hieracium triste Frank W. Peirson 1933-8-14 10801 Inyo above the Morgan Pass Lakes; Rock Cr. Lake Basin 3352 Comment
  UC511847  Phacelia hastata subsp. compacta Frank W. Peirson 1933-8-15 Inyo gravel slides above Ruby Lake; Rock Creek Lake Basin 3413 Comment
  UC511901  Pyrrocoma racemosa var. sessiliflora Frank W. Peirson 1933-8-23 10851 Inyo about 6 mi Lone Pine 1127 Comment
  UC599251  Gentianella tenella subsp. tenella Frank W. Peirson 1933-8-22 Inyo upper part Heart Lake Meadow; Rock Creek Lake Basin 3230 Comment
  UC643226  Ivesia lycopodioides subsp. megalopetala Frank W. Peirson 1940-7-31 Inyo Heart Lake Meadow; Rock Creek Lake Basin 3230 Comment
  UC908516  Gilia scopulorum Frank W. Peirson 1928-4-2 7812 Inyo Furnace Cr near Ryan (foot of canyon wall and in talus); Furnace Cr near Ryan 609 Comment
  CAS-BOT-BC159093  Phacelia ramosissima var. latifolia Frank W. Peirson 1927-5-28 7304 Kern Kern River Road, 16 miles from Bakersfield 457 Comment
  CAS-BOT-BC16345  Athysanus unilateralis Frank W. Peirson 1925-3-19 5482 Kern North slope Tehachapi Pass. 609 Comment
  CAS-BOT-BC226205  Gilia interior F. W. Peirson 1930-5-14 8856 Kern On road from Kernville to Glenville [Glennville], Greenhorn Range 1600 Comment
  CAS-BOT-BC291082  Eastwoodia elegans Frank W. Peirson 1929-5-18 8405 Kern North slope Tehachapi Pass Comment
  CAS-BOT-BC63695  Ceanothus integerrimus Frank W. Peirson 1933-7-9 10699 Kern Along Power Line near Summit Camp. Summit Greenhorn Mts. 2072 Comment
  JEPS23380  Delphinium gypsophilum Frank W. Peirson 1928-4-5 7834 Kern n slope Tehachapi Pass Comment
  JEPS54818  Astragalus pachypus Frank W. Peirson 1928-4-5 Kern n slope Tehachapi Pass 609 Comment
  PASA2053  Streptanthus coulteri Frank W. Peirson 1930-5-14 Kern Greenhorn Range, east slope 1462 Comment
  POM128768  Goodmania luteola F. W. Peirson 1927-5-7 7266 Kern Muroc (10 miles south) Comment
  POM231932  Bromus diandrus F. W. Peirson 1937-5-30 12080 Kern Ca. 2 miles above White Oak Lodge, Cottonwood Creek, Tahachapi Mountains. 1677 Comment
  RSA614277  Microseris sylvatica F. W. Peirson 1924-3-19 5491 Kern north slope of Tehachapi Pass. 610 Comment
  RSA65247  Eriogonum viridescens F. W. Peirson 1930-5-13 8803 Kern Red Rock Canyon. 884 Comment
  RSA65257  Chorizanthe spinosa F. W. Peirson 1927-5-29 7336 Kern Red Rock Canyon, west end of Mojave Desert. 762 Comment
  RSA65898  Chorizanthe uniaristata F. W. Peirson 1933-7-9 10684 Kern 1/2 north of the Walker Basin on road from Caliente to Bodfish. Comment
  RSA65983  Eriogonum inflatum var. inflatum F. W. Peirson 1921-8-2 1735 Kern Red Rock Canyon, SW. Comment
  RSA66067  Rorippa curvisiliqua F. W. Peirson 1908-7-12 1908 Kern Lower Kern River, Sierrra Nevada. Comment
  RSA69701  Mentzelia montana F. W. Peirson 1930-5-14 8845 Kern Road from Kernville to Glenville, Greenhorn Range (east slope) 1463 Comment
  RSA70134  Triteleia laxa F. W. Peirson 1930-5-15 8875 Kern Greenhorn Range, hills southeast of [Glenville]. 1067 Comment
  RSA70146  Triteleia ixioides subsp. scabra F. W. Peirson 1930-5-15 8874 Kern Greenhorn Range, hills southeast of Glennville 1006 Comment
  RSA70193  Allium denticulatum F. W. Peirson 1927-5-29 7328 Kern Just below the summit on west slope of Walker Pass 1585 Comment
  RSA70333  Asclepias cordifolia F. W. Peirson 1927-5-28 7312 Kern Kern River road, 22 miles from Bakersfield 610 Comment
  RSA71860  Allophyllum gilioides F. W. Peirson 1930-5-14 8860 Kern Road from Kernville to Glenville, Greenhorn Range 1601 Comment
  RSA71870  Gilia cana subsp. speciosa F. W. Peirson 1930-5-13 8819 Kern 5 miles north of Ricardo, Indian Wells Valley 1006 Comment
  RSA72294  Aliciella hutchinsifolia F. W. Peirson 1932-1-5 9870 Kern Small side canyon, Red Rock Canyon, southwestern Mojave Desert. 884 Comment
  RSA73024  Linanthus parryae F. W. Peirson 1928-4-4 7827 Kern 11 miles north of Johannesburg Comment
  RSA74184  Phacelia cicutaria F. W. Peirson 1930-5-13 8842 Kern River embankment, Kern River. 845 Comment
  RSA76020  Nemophila parviflora var. quercifolia F. W. Peirson 1930-5-14 8862 Kern On road from Kernville to Glenville, Greenhorn Range 1601 Comment
  RSA79752  Penstemon grinnellii subsp. scrophularioides F. W. Peirson 1930-5-13 8833 Kern In great abundance along south bank of Cannell Creek, about 1/4 mi. back from Kern River. 845 Comment
  RSA80359  Perideridia pringlei F. W. Peirson 1933-7-9 10687 Kern About 6 miles from Caliente on road to Bodfish. Comment
  RSA82993  Salvia dorrii var. pilosa F. W. Peirson 1927-5-29 7330 Kern Near summit and down east slope of Walker Pass 1585 Comment
  RSA85054  Ephedra nevadensis F. W. Peirson 1932-5-5 9872 Kern East side of Walker Pass 1372 Comment
  RSA87318  Galium bifolium F. W. Peirson 1933-7-9 10698 Kern 2 miles south of Summit Camp, Greenhorn Mountains. 2073 Comment
  SD87668  Bromus arenarius Frank W. Peirson 1937-5-30 12079 Kern Cottonwood Creek, Tehachapi Mys. 2 miles above White Oaks Lodge. 1676 Comment
  UC511808 Image available Lessingia nana Frank W. Peirson 1933-7-9 10683 Kern Road from Caliente to Bodfish, Kern County, Walker Basin. Comment
  UC511909  Clarkia cylindrica subsp. clavicarpa Frank W. Peirson 1933-7-9 10678 Kern about 6 mi n Caliente (road from Caliente to Bodfish) Comment
  UC511913  Pediomelum californicum Frank W. Peirson 1933-7-9 10686 Kern about 6 mi s Bodfish (Road from Caliente to Bodfish); s of Bodfish Comment
  RSA0033369  Delphinium gypsophilum F. W. Peirson 1925-3-19 5520 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA0090930  Amsinckia intermedia var. eastwoodiae F. W. Peirson 1925-3-19 5480 Kern North slope of Tehachapi Pass. 610 Comment
  RSA66300  Stylomecon heterophylla F. W. Peirson 1925-3-19 5527 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA67346  Lepidium nitidum F. W. Peirson 1925-3-19 5506 Kern North slope of Tehachapi Pass 457 Comment
  RSA74909  Phacelia douglasii var. petrophila F. W. Peirson 1925-3-19 5504 Kern North slope of Tehachapi Mountains. 457 Comment
  RSA77193  Eremalche parryi F. W. Peirson 1925-3-19 5521 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA79909  Solanum elaeagnifolium F. W. Peirson 1929-7-27 8566 Kern along the railroad track at south end of Mohave. Comment
  RSA93017  Lasthenia minor F. W. Peirson 1925-3-19 5519 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA93952  Hymenoclea salsola F. W. Peirson 1930-5-13 8816 Kern 5 miles north of Ricardo, Indian Wells Valley 1006 Comment
  RSA94396  Chaenactis xantiana F. W. Peirson 1930-5-14 8846 Kern Road from Kernville to Glenville, Greenhorn Range 1463 Comment
  RSA95057  Rafinesquia neomexicana F. W. Peirson 1930-5-13 8797 Kern Red Rock Canyon 883 Comment
  RSA95077  Microseris sylvatica F. W. Peirson 1930-5-15 8877 Kern Greenhorn Range, hills southeast of [Glenville]. 1067 Comment
  RSA95231  Stephanomeria parryi F. W. Peirson 1932-5-5 9869 Kern Red Rock Canyon. 884 Comment
  RSA95239  Microseris lindleyi F. W. Peirson 1930-5-13 8836 Kern River embankment, Kern River. 845 Comment
  RSA95366  Sphaeralcea ambigua subsp. ambigua F. W. Peirson 1930-5-13 8815 Kern 5 miles north of Ricardo, Indian Wells Valley 1006 Comment
  RSA97317  Lomatium vaginatum F. W. Peirson 1928-4-5 7832 Kern North slope of Tehachapi Pass 610 Comment
  UC501547  Nemophila menziesii Frank W. Peirson 1925-3-19 5478 Kern n slope Tehachapi North slope Tehachapi 609 Comment
  POM89151  Dodecatheon hendersonii F. W. Peirson 1926-4-2 6573 Lake Grade down to Clear Lake, on Hopland Road Comment
  RSA69601  Sagittaria cuneata F. W. Peirson 1925-8-8 6348 Lake At upper end of lower Blue Lake. Comment
  RSA82398  Salvia sonomensis F. W. Peirson 1926-4-2 6600 Lake 5 miles west of Lower Lake on Kelseyville Road Comment
  RSA87075  Lupinus vallicola subsp. apricus F. W. Peirson, Mabel B. Peirson 1926-4-2 6586 Lake West end of Clear Lake. Comment
  CAS-BOT-BC389100  Silene laciniata subsp. californica Frank W. Peirson 1928-7-4 7956 Lake 8 mi. w. of Lower Lake Comment
  RSA65705  Silene californica F. W. Peirson 1928-7-4 7956 Lake 8 miles west of Lower Lake. Comment
  RSA85299  Ranunculus occidentalis var. eisenii F. W. Peirson 1926-4-2 6593 Lake 3 miles east of Kelseyville on road to Lower Lake Comment
  RSA90186  Astragalus breweri F. W. Peirson 1926-4-2 6578 Lake 0.5 miles south of Clear Lake on Hopland Road. Comment
  RSA91545  Trifolium dichotomum F. W. Peirson 1926-4-3 6608 Lake 3.3 miles north of Middletown. Comment
  RSA95396  Ceanothus foliosus F. W. Peirson, Mabel Peirson 1926-4-2 6571 Lake Hopland Grade Comment
  RSA97149  Lomatium marginatum F. W. Peirson 1926-4-3 6607 Lake 3.3 mi N of Middletown. Comment
  RSA75519  Phacelia adenophora F. W. Peirson 1926-6-24 6851 Lassen On Madeline Plain. Comment
  RSA87452  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
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Apr 23 2013
  RSA83362  Monardella odoratissima subsp. glauca F. W. Peirson 1926-6-24 6850 Lassen 2-3 miles southward from the Madeline Plain Comment
  RSA99367  Lonicera conjugialis F. W. Peirson 1926-6-22 6822 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
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Apr 25 2013
  CAS-BOT-BC100416  Brickellia californica Frank W. Peirson 1922-9-14 4732 Los Angeles Cascade [Canon] Canyon, San Antonio Region 1402 Comment
  CAS-BOT-BC106135  Brickellia nevinii Frank W. Peirson 1921-10-22 2599 Los Angeles Head of Eaton Canyon [Canon] - San Gabriel Mts. 1645 Comment
  CAS-BOT-BC123033  Lessingia lemmonii var. peirsonii Frank Warrington Peirson 1923-6-9 3550 Los Angeles Liebre Mts., at lowest point between the divides of Pine and Oak Grove Canyons 1173 Comment
  CAS-BOT-BC158001  Garrya veatchii F. W. Peirson 1919-11-30 2723 Los Angeles Eaton Canyon, San Gabriel Mts. 609 Comment
  CAS-BOT-BC203922  Malacothamnus clementinus Frank W. Peirson 1923-4-9 3458 Los Angeles N. slope canon [canyon] at Lemmon [Lemon] Tank, San Clemente Is. Comment
  CAS-BOT-BC205149  Lupinus elatus Frank W. Peirson 1921-6-16 2438 Los Angeles Waterman Ridge, San Gabriel Mts. 2286 Comment
  CAS-BOT-BC205150  Lupinus elatus F. W. Peirson 1918-6-10 89 Los Angeles San Gabriel Peak Comment
  CAS-BOT-BC225494  Gilia nevinii Frank W. Peirson 1923-4-9 3433 Los Angeles Wilson's Cove, San Clemente Is. Comment
  CAS-BOT-BC242780  Eriogonum davidsonii Frank W. Peirson 1919-7-29 18 Los Angeles Summit of Mt. Wilson, San Gabriel Mts. Comment
  CAS-BOT-BC268174  Eriogonum umbellatum var. minus Frank W. Peirson 1920-9-12 21 Los Angeles Summit San Antonio Peak (Baldy) 3048 Comment
  CAS-BOT-BC279533  Chaenactis artemisiifolia F. W. Peirson 1919-7-3 242 Los Angeles Lukens Peak, San Gabriel Mts. 914 Comment
  CAS-BOT-BC310840  Heterotheca sessiliflora subsp. fastigiata Frank W. Peirson 1921-10-9 4735 Los Angeles San Gabriel Mts. Delta Canon [Canyon], Tujunga Trib'y Comment
  CAS-BOT-BC326712  Pleiacanthus spinosus Frank W. Peirson 1923-8-30 4742 Los Angeles North of Big Pines, San Gabriel Mts. 2225 Comment
  CAS-BOT-BC380176  Layia platyglossa Frank W. Peirson 1923-4-9 3430 Los Angeles San Clemente Island; Wilson's Cove Comment
  CAS-BOT-BC402005  Gilia ochroleuca subsp. bizonata Frank W. Peirson 1919-5-10 268 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mts. 914 Comment
  CAS-BOT-BC402080  Gilia ochroleuca subsp. vivida F. W. Peirson 1923-5-26 3534 Los Angeles Rock Creek Divide, San Gabriel Mountains Comment
  CAS-BOT-BC432202  Lithophragma bolanderi Frank W. Peirson 1925-3-18 5469 Los Angeles Newhall Grade 381 Comment
  JEPS10748  Pedicularis semibarbata Frank W. Peirson 1918-6-17 212 Los Angeles n slope North Baldy Baldy; San Gabriel Mountains 2743 Comment
  JEPS11596  Penstemon spectabilis var. subviscosus F. W. Peirson 1918-6-30 206 Los Angeles Mt. Wilson Toll Road San Gabriel Mts, Mt. Wilson 1295 Comment
  JEPS11603  Penstemon spectabilis var. subviscosus Frank W. Peirson 1924-6-16 Los Angeles foothills near Pasadena; San Gabriel Mountains, foothills near Pasadena Comment
  JEPS11668  Orobanche californica subsp. feudgei Frank W. Peirson 1921-7-3 2489 Los Angeles San Gabriel Mountains. Ridge south of Swartout Valley. Comment
  JEPS12079  Solanum douglasii Frank W. Peirson 1918-10-15 282 Los Angeles Rubio Canyon; San Gabriel Mountains, Rubio Canyon 701 Comment
  JEPS14151  Oreonana vestita Frank W. Peirson 1918-6-17 137 Los Angeles summit of North Baldy San Gabriel Mts.; , N. Baldy 2743 Comment
  JEPS18979  Gutierrezia microcephala Frank W. Peirson 1923-9-1 4016 Los Angeles Sheep Creek San Gabriel Mountains, Sheep Creek 1524 Comment
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Aug 14 2013
  JEPS19123  Isocoma menziesii var. vernonioides Frank W. Peirson 1921-11-11 2596 Los Angeles Saugus Comment
  JEPS195  Sanicula arguta Frank W. Peirson 1919-3-27 336 Los Angeles Lukens Peak Trail San Gabriel Mountains (foot) 579 Comment
  JEPS19961  Ambrosia acanthicarpa Frank W. Peirson 1918-10-16 271 Los Angeles in Pacoima Canyon 518 Comment
  JEPS20504  Pseudognaphalium microcephalum Frank W. Peirson 1919-1-26 303 Los Angeles Rubio Canon San Gabriel Mts., Rubio Canon 548 Comment
  JEPS20885  Logfia filaginoides Frank W. Peirson 1918-6-4 233 Los Angeles foothills e Rubio Canon; San Gabriel Mountains, Rubio Canon 609 Comment
  JEPS2359  Phacelia davidsonii Frank W. Peirson 1918-5-26 163 Los Angeles mt summit San Gabriel Mountains, Mount Wilson 1752 Comment
  JEPS26403  Malacothamnus clementinus Frank W. Peirson 1923-4-9 3458 Los Angeles n slope canyon from Lemon Tank; San Clemente Island Comment
  JEPS26404  Malacothamnus orbiculatus Frank W. Peirson 1919-6-15 502 Los Angeles San Gabriel Mountains, Rock Creek 1249 Comment
  JEPS3126  Castilleja plagiotoma F. W. Peirson 1918-6-18 210 Los Angeles n side San Gabriel Mts. (Lower Rock Creek canyon) 1219 Comment
  JEPS31736  Eulobus californicus Frank W. Peirson 1919-3-27 349 Los Angeles hills w Arroyo Seco; San Gabriel Mountains 426 Comment
  JEPS3448  Plantago patagonica Frank W. Peirson 1921-5-20 2410 Los Angeles Little Rock Creek San Gabriel Mountains 960 Comment
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Sep 26 2010
  JEPS35467  Helianthus annuus F. W. Peirson 1919-3-11 326 Los Angeles first canyon e Rubio Canyon; San Gabriel Mts. 548 Comment
  JEPS36932  Artemisia douglasiana F. W. Peirson 1918-9-15 246 Los Angeles near foot of Sister Elsie trail; San Gabriel Mountains, Sister Elsie Peak/Mount Lukens 640 Comment
  JEPS37246  Senecio triangularis F. W. Peirson 1921-7-17 2509 Los Angeles San Gabriel River, Prairie Fork San Gabriel Mts. 2133 Comment
  JEPS38026  Quercus Frank W. Peirson 1919-5-11 404 Los Angeles Arraster Creek San Gabriel Mountains Comment
  JEPS38441  Salix laevigata Frank W. Peirson 1919-3-30 359 Los Angeles San Gabriel Mts., Big Tujunga Canyon Comment
  JEPS38673  Arctostaphylos glandulosa subsp. glandulosa F. W. Peirson 1918-5-19 142 Los Angeles 2 mi n Altadena; San Gabriel Mts., Echo Mountain 1036 Comment
  JEPS38733  Arctostaphylos glauca F. W. Peirson 1919-1-29 315 Los Angeles trail San Gabriel Mts., Mt. Lowe 1341 Comment
  JEPS39236  Epilobium brachycarpum Frank W. Peirson 1918-8-16 126 Los Angeles San Antonio Canyon San Gabriel Mountains, San Antonio Mts. 1341 Comment
  JEPS39860  Rumex salicifolius var. salicifolius F. W. Peirson 1918-6-18 29 Los Angeles Lower Rock Creek San Gabriel Mts. 1219 Comment
  JEPS41225  Mentzelia congesta Frank W. Peirson 1923-5-25 3523 Los Angeles San Gabriel Mountains, Rock Creek Comment
  JEPS42336  Ceanothus spinosus Frank W. Peirson 1921-2-26 733 Los Angeles Topanga Canyon SW Los Angeles Co., Santa Monica Mountains 457 Comment
  JEPS42932  Forestiera pubescens Frank W. Peirson 1919-6-13 483 Los Angeles Rock Creek; San Gabriel Mountains 1295 Comment
  JEPS42939  Fraxinus velutina Frank W. Peirson 1921-6-20 2459 Los Angeles West Fork San Gabriel River San Gabriel Mountains 457 Comment
  JEPS44040  Epilobium canum subsp. latifolium Frank W. Peirson 1918-6-30 123 Los Angeles Trail from Mt. Lowe to Mt. Wilson. Comment
  JEPS45027  Heteromeles arbutifolia Frank W. Peirson 1918-7 77 Los Angeles Santa Anita Canyon; San Gabriel Mts. 792 Comment
  JEPS45138 Image available Amelanchier utahensis Frank W. Peirson 1920-5-29 2155 Los Angeles Icehouse Canyon; San Gabriel Mts. 1981 Comment
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Dec 10 2014
  JEPS45546  Cercocarpus betuloides var. betuloides Frank W. Peirson 1919-7-1 340 a Los Angeles Fish Canyon; San Gabriel Mountains, Fish Canyon 304 Comment
  JEPS45975  Lythrum californicum Frank W. Peirson 1918-10-16 291 Los Angeles San Gabriel Mountains, Pacoima Canyon Pacoima Canyon; San Gabriel Mountains, Pacoima Canyon 487 Comment
  JEPS4641  Collinsia heterophylla F. W. Peirson 1918-6-1 192 Los Angeles Eaton Canyon; San Gabriel Mtns 914 Comment
  JEPS49281  Ribes amarum Frank W. Peirson 1919-4-5 316 Los Angeles Toll Road San Gabriel Range 1066 Comment
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Dec 10 2014
  JEPS50261  Viola purpurea subsp. venosa Frank W. Peirson 1921-6-15 2491 Los Angeles Trail Pine Flats to Chilao (San Gabriel Mountains); San Gabriel Mountains 1676 Comment
  JEPS50471  Viola pedunculata Frank W. Peirson 1919-3-27 332 Los Angeles foot of Lukens Peak Trail; San Gabriel Mountains, Lukens Peak Trail 579 Comment
  JEPS50882  Silene verecunda subsp. platyota Frank W. Peirson 1919-6-14 474 Los Angeles Rock Creek San Gabriel Mountains, Rock Creek 1706 Comment
  JEPS51534  Meconella denticulata Frank W. Peirson 1918-5-19 36 Los Angeles Millards Canyon San Gabriel Mtns 609 Comment
  JEPS51563  Papaver californicum Frank W. Peirson 1921-4-10 2397 Los Angeles San Gabriel Mountains, San Dimas Canyon San Dimas Canyon; San Gabriel Mountains, San Dimas Canyon 533 Comment
  JEPS52562  Calyptridium monandrum Frank W. Peirson 1918-6-4 33 Los Angeles Foothills e of Rubio Canyon 609 Comment
  JEPS53034  Arabis glabra Frank W. Peirson 1919-4-9 390 Los Angeles Rubio Canyon San Gabriel Mountains 548 Comment
  JEPS5362  Eriophyllum pringlei F. W. Peirson 1921-5-19 1386 Los Angeles San Gabriel Mts., Little Rock Creek 1036 Comment
  JEPS55486  Lotus heermannii Frank W. Peirson 1919-7-1 510 Los Angeles Fish Canyon San Gabriel Mountains 457 Comment
  JEPS56106  Eriogonum wrightii var. subscaposum Frank W. Peirson 1918-8-17 22 Los Angeles Baldy, Mt. San Antonio San Gabriel Mts., Baldy, Mt. San Antonio 2438 Comment
  JEPS56374  Allium peninsulare var. peninsulare Frank W. Peirson 1919-7-1 509 Los Angeles Fish Canyon San Gabriel Mountains, Fish Canyon 609 Comment
  JEPS57770  Chorizanthe watsonii Frank W. Peirson 1919-5-10 394 Los Angeles Arraster Creek San Gabriel Mountains, Arraster Creek Comment
  JEPS58202  Linanthus aureus Frank W. Peirson 1920-4-26 2111 Los Angeles Santa Anita Wash San Gabriel Mountains 213 Comment
  JEPS60675  Ranunculus cymbalaria var. saximontanus Frank W. Peirson 1919-6-15 486 Los Angeles Rock Creek San Gabriel Mountains 1295 Comment
  JEPS62047  Lilium parryi Frank W. Peirson 1921-7-17 2515 Los Angeles Prairie Fork, San Gabriel River; San Gabriel Mountains 2133 Comment
  JEPS62059  Muilla maritima Frank W. Peirson 1918-5-21 5 Los Angeles Arroyo Seco San Gabriel Mts. 457 Comment
  JEPS62730  Salvia leucophylla Frank W. Peirson 1919-5-11 412 Los Angeles Soledad Canyon San Gabriel Mts. (n slope of San Gabriel Mts) 426 Comment
  JEPS62996  Stachys albens Frank W. Peirson 1921-7-1 1046 Los Angeles Soledad Canyon San Gabriel Mts. 441 Comment
  JEPS63874  Juncus textilis Frank W. Peirson 1921-6-20 1640 Los Angeles North Fork San Gabriel River San Gabriel Mountains 762 Comment
  JEPS64569  Populus trichocarpa Frank W. Peirson 1919-2 318 Los Angeles San Gabriel Mountains 457 Comment
  JEPS65041  Lupinus breweri Frank W. Peirson 1921-6-16 2441 Los Angeles near summit Mt. Waterman; San Gabriel Mts., nr summit Mt. Waterman 2316 Comment
  JEPS65123  Lupinus elatus Frank W. Peirson 1918-6-10 89 Los Angeles Summit of San Gabriel Peak San Gabriel Peak Comment
  JEPS66089  Trifolium wormskioldii Frank W. Peirson 1919-6-15 485 Los Angeles Rock Creek 1295 Comment
  JEPS67675  Cryptantha intermedia Frank W. Peirson 1919-5-10 402 Los Angeles Arraster Creek San Gabriel Mountains 914 Comment
  JEPS69442  Gilia angelensis Frank W. Peirson 1919-5-14 424 Los Angeles Eaton Canyon San Gabriel Mountains, Eaton Canyon 762 Comment
  JEPS7146  Plantago major Frank W. Peirson 1919-6-5 462 Los Angeles San Antonio Canyon San Gabriel Mountains 1341 Comment
  JEPS73669  Monardella exilis Frank W. Peirson 1921-5-19 2416 Los Angeles Little Rock Creek San Gabriel Mts. 1036 Comment
  JEPS78507  Nemacladus longiflorus var. longiflorus Frank W. Peirson 1921-6-21 2453 Los Angeles San Gabriel Mountains, West Fork of San Gabriel River 640 Comment
  JEPS78508  Nemacladus ramosissimus Frank W. Peirson 1918-6-4 220 Los Angeles foothills e. of Rubio Canyon; San Gabriel Mountains 609 Comment
  JEPS8827  Castilleja linariifolia Frank W. Peirson 1921-7-2 2478 Los Angeles Pallett Creek; San Gabriel Mountains 1097 Comment
  JEPS8876  Chaenactis fremontii Frank W. Peirson 1921-5-19 2409 Los Angeles near its opening into the Mojave Desert Little Rock Creek (n base of San Gabriel Mountains); Mojave Desert, San Gabriel Mountains, Little Rock Creek 960 Comment
  PASA1094  Lotus humistratus Frank W. Peirson 1919-5-11 Los Angeles Arraster Creek, San Gabriel Mts. 853 Comment
  PASA1703  Solidago occidentalis Frank W. Peirson 1921-9-21 Los Angeles Los Angeles River near Tropico Comment
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Nov 12 2014
  PASA1790  Chrysopsis villosa var. fastigiata Frank W. Peirson 1928-10-21 Los Angeles West Fork San Gabriel River 1066 Comment
  PASA2198  Chaenactis stevioides Frank W. Peirson 1923-5-25 Los Angeles Rock Creek, San Gabriel Mts. 1295 Comment
  PASA2796  Fritillaria pinetorum F. W. Peirson 1921-7-18 Los Angeles San Gabriel Mtns., Mt. Williamson 2316 Comment
  PASA991  Castilleja plagiotoma Frank W. Peirson 1921-7-3 Los Angeles Blue Ridge, San Gabriel Mts. 2285 Comment
  POM11156  Cystopteris fragilis F. W. Peirson 1920-9-15 s.n. Los Angeles Mt. San Antonio, north slope 2819 Comment
  POM13538  Lithophragma bolanderi F. W. Peirson 1922-6-3 s.n. Los Angeles At Collins Ranch, north slope of Liebre Mts. 1143 Comment
  POM160274  Malacothamnus marrubioides F. W. Peirson 1929-7-1 s.n. Los Angeles Aliso Creek, San Gabriel Mts. 1098 Comment
  POM47654  Bromus diandrus F. W. Peirson 1924-5-27 4621 Los Angeles San Gabriel Mountains. North slope, Strawberry Peak. 1753 Comment
  POM48465  Nitrophila occidentalis F. W. Peirson 1924-10-19 5229 Los Angeles Clearwater. Comment
  POM9939  Calochortus clavatus var. gracilis Frank W. Peirson 1921-6-21 2468 Los Angeles West Fork of San Gabriel River. 686 Comment
  RSA442865  Sphaeralcea emoryi subsp. variabilis F. W. Peirson 1921-5-18 s.n. Los Angeles Palmdale, Antelope Valley. Comment
  RSA65149  Eriogonum fasciculatum var. foliolosum F. W. Peirson 1919-7-3 513 Los Angeles San Gabriel Mountains: Lukens Peak 915 Comment
  RSA65151  Eriogonum fasciculatum var. foliolosum F. W. Peirson 1919-1-26 305 Los Angeles San Gabriel Mountains: Rubio Reservoir, foot of Rubio Canyon 549 Comment
  RSA65159  Eriogonum elongatum var. elongatum F. W. Peirson 1919-10-26 19 Los Angeles Along Pacific Electric tracks to Rubio Canyon, San Gabriel Mts. 549 Comment
  RSA65161  Dodecahema leptoceras F. W. Peirson 1925-4-19 5776 Los Angeles On Upper Boulevard, just E of Pacoima Bridge, SW base of San Gabriel Mts. Comment
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Sep 9 2015
  RSA65162  Dodecahema leptoceras F. W. Peirson 1920-4-26 2113 Los Angeles Santa Anita Wash, S base of San Gabriel Mts. 213 Comment
  RSA65169  Dodecahema leptoceras F. W. Peirson 1951-1 1777 Los Angeles Rubio Wash, Altadena Comment
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Dec 17 2015
  RSA65435  Calandrinia breweri F. W. Peirson 1919-5-27 357 Los Angeles Hills west of lower Arroyo Seco, Pasadena 426 Comment
  RSA65500  Arenaria macradenia var. arcuifolia F. W. Peirson 1929-7-1 8430 Los Angeles Aliso Creek at Tie Canyon. 1356 Comment
  RSA65508  Minuartia douglasii F. W. Peirson 1923-5-21 4155 Los Angeles Fish Canyon 914 Comment
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Aug 1 2014
  RSA65596  Loeflingia squarrosa F. W. Peirson 1920-5-3 2123 Los Angeles Little Tujunga Wash, west end of San Gabriel Mts. 335 Comment
  RSA65788  Cleomella obtusifolia F. W. Peirson 1933-5-13 10661 Los Angeles 12 miles south of Muroc. Comment
  RSA66160  Erysimum suffrutescens F. W. Peirson 1922-1-5 1904 Los Angeles Hermosa Beach Comment
  RSA66505  Arabis glabra F. W. Peirson 1903-3-10 658 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA66539  Caulanthus major F. W. Peirson 1922-7-5 4179 Los Angeles Le Montaine, peak north of Big Pines. 2134 Comment
  RSA66708  Caulanthus amplexicaulis var. amplexicaulis F. W. Peirson 1926-4-27 6672 Los Angeles Rock Creek, north slope of San Gabriel Range 1372 Comment
  RSA66814  Stanleya pinnata var. pinnata F. W. Peirson 1918-6-16 292 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1448 Comment
  RSA66841  Caulanthus heterophyllus var. heterophyllus F. W. Peirson 1918-6-6 63 Los Angeles East of Rubio Canyon Comment
  RSA67119  Galium hallii F. W. Peirson 1923-9-1 4013 Los Angeles In small sawmill canyon at west end of Swartout Valley at 6600 feet. 2012 Comment
  RSA67137  Galium trifidum F. W. Peirson 1908-5-22 2655 Los Angeles Bixby Ranch near Long Beach. Comment
  RSA69566  Mentzelia ravenii F. W. Peirson 1919-5-10 395 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains. 915 Comment
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Feb 20 2013
  RSA69951  Grayia spinosa F. W. Peirson 1926-4-26 6654 Los Angeles about 1 mile east of Palmdale Comment
  RSA70225  Allium haematochiton F. W. Peirson 1921-4-21 2841 Los Angeles Foot of San Dimas Canyon. 457 Comment
  RSA70398  Chamaesyce serpillifolia F. W. Peirson 1920-6-14 2162 Los Angeles At Peirson home, 1082 New York Drive, Altadena Comment
  RSA70415  Arctostaphylos parryana F. W. Peirson 1922-7-6 3196 Los Angeles hills immediately south of divide, Big Pines, north side of San Gabriel Mountains 2104 Comment
  RSA70498  Geranium californicum F. W. Peirson 1922-7-6 3185 Los Angeles Swartout Valley region. Big Pines, north side of San Gabriel Mtns. 2073 Comment
  RSA71840  Gilia latiflora subsp. latiflora F. W. Peirson 1921-5-19 2832 Los Angeles Little Rock Creek: north base of San Gabriel Mountains. 1037 Comment
  RSA72101  Epilobium canum subsp. canum F. W. Peirson 1919-10-26 4517 Los Angeles Along Pacific Electric tracks to Rubio Canyon, San Gabriel Mts. 549 Comment
  RSA72258  Camissonia cheiranthifolia subsp. suffruticosa F. W. Peirson 1921-2-26 2579 Los Angeles Beach 1 mile east of Topango [Topanga]. Comment
  RSA72290  Gilia angelensis F. W. Peirson 1918-6-16 469 Los Angeles Mint Canyon, Sierra Pelona Valley, northwest corner of San Gabriel Mts. 762 Comment
  RSA72645  Wyethia ovata F. W. Peirson 1921-6-14 1326 Los Angeles San Gabriel Mountains. Pine Flats, headwaters of Tujunga Creek. 1676 Comment
  RSA73037  Leptosiphon breviculus F. W. Peirson 1926-4-27 6665 Los Angeles San Gabriel Mountains. North side of San Gabriel Mountains, Rock Creek. 1296 Comment
  RSA73303  Clarkia bottae F. W. Peirson 1917-5-1 2087 Los Angeles Topanga Canyon, Santa Monica Mountains. Comment
  RSA73307  Clarkia bottae F. W. Peirson 1919-5-18 432 Los Angeles San Gabriel Mtns. Monrovia Canyon. 305 Comment
  RSA73320  Clarkia cylindrica subsp. cylindrica F. W. Peirson 1921-5-18 2797 Los Angeles summit of Newhall Grade, near Newhall. 427 Comment
  RSA73344  Clarkia xantiana subsp. parviflora F. W. Peirson 1923-5-27 3535 Los Angeles small canyon on Pinyon Ridge, Rock Creek, north slope of San Gabriel Mountains 1296 Comment
  RSA73348  Clarkia rhomboidea F. W. Peirson 1927-5-21 7300 Los Angeles North side of canyon of Rock Creek 1524 Comment
  RSA75351  Phacelia fremontii F. W. Peirson 1927-5-21 163 Los Angeles Rock Creek, north base of San Gabriel Mountains. 1524 Comment
  RSA75352  Phacelia fremontii F. W. Peirson 1922-6-3 4478 Los Angeles East of Oak Grove Creek Divide, Liebre Mts. 1174 Comment
  RSA75379  Ludwigia peploides subsp. peploides F. W. Peirson 1916-09 2080 Los Angeles Kewen Lake, Pasadena Comment
  RSA75441  Camissonia hirtella F. W. Peirson 1919-5-10 4698 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains. 915 Comment
  RSA75442  Camissonia hirtella F. W. Peirson 1929-6-30 8421 Los Angeles Clearing below the road near Tie Canyon stream; Aliso Creek, San Gabriel Mts. 1357 Comment
  RSA75512  Phacelia affinis F. W. Peirson 1919-5-10 410 Los Angeles Arraster Creek, San Gabriel Mts. Comment
  RSA75683  Camissonia boothii subsp. decorticans F. W. Peirson 1919-6-14 479 Los Angeles Rock Creek [Big?] 1524 Comment
  RSA75800  Pholistoma auritum var. auritum F. W. Peirson 1923-5-21 3521 Los Angeles South face of San Gabriel Mountains. Fish Canyon. 793 Comment
  RSA75932  Phacelia longipes F. W. Peirson 1919-4-19 381 Los Angeles Pacoima Canyon 488 Comment
  RSA76947  Malosma laurina F. W. Peirson 1920-7-13 105 Los Angeles along wash land by Rubio Canyon stream; Altadena Comment
  RSA76985  Acer macrophyllum F. W. Peirson 1923-5-26 3538 Los Angeles Rock Creek, San Gabriel Mountains 1982 Comment
  RSA77048  Sphaeralcea emoryi subsp. variabilis F. W. Peirson 1917-5-13 776 Los Angeles Palmdale, SW Mojave Desert. Comment
  RSA77229  Eriodictyon trichocalyx var. trichocalyx F. W. Peirson 1918-6-10 169 Los Angeles west slope of San Gabriel Peak 1677 Comment
  RSA77255  Emmenanthe penduliflora var. penduliflora F. W. Peirson 1925-4-23 5799 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA77698  Ceanothus oliganthus var. sorediatus F. W. Peirson 1920-4-26 732 Los Angeles Santa Anita Wash, S base of San Gabriel Mts. 213 Comment
  RSA79455  Scrophularia californica F. W. Peirson 1911-04 191 Los Angeles Laurel Canyon. Comment
  RSA79594  Cryptantha barbigera F. W. Peirson 1928-6-2 7944 Los Angeles Trail up South Fork of Rock Creek. 1677 Comment
  RSA79598  Cryptantha circumscissa F. W. Peirson 1919-5-10 1001 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mountains. 838 Comment
  RSA79749  Keckiella ternata subsp. ternata F. W. Peirson 1918-8-6 263 Los Angeles Martins Camp, Mt. Wilson, San Gabriel Mountains. 1677 Comment
  RSA79779  Penstemon centranthifolius F. W. Peirson 1905-1 200 Los Angeles Mt. Lowe, San Gabriel Mountains. Comment
  RSA80486  Mimulus palmeri F. W. Peirson 1907-7-9 1124 Los Angeles Pine Flats Comment
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Dec 10 2014
  RSA80745  Cryptantha oxygona F. W. Peirson 1921-6-15 2463 Los Angeles Trail from Pine Flats to Chilao 1677 Comment
  RSA80755  Cryptantha pterocarya F. W. Peirson 1919-6-4 477 Los Angeles Rock Creek, north slope of San Gabriel Mts. 1692 Comment
  RSA80765  Nicotiana glauca F. W. Peirson 1920-4-25 352 Los Angeles Arroyo Seco Canyon, near Pasadena, Ca. 381 Comment
  RSA81476  Castilleja plagiotoma F. W. Peirson 1919-5-10 1148 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mountains. 838 Comment
  RSA82437  Salvia leucophylla F. W. Peirson 1919-5-11 412 Los Angeles Mint Canyon road near the bridge over the Santa Clara River, northwest of San Gabriel Mts. 427 Comment
  RSA82440  Salvia leucophylla F. W. Peirson 1906-7-16 1055 Los Angeles Big ditch north of Elysian Park, Los Angeles. Comment
  RSA82555  Stachys albens F. W. Peirson 1921-7-1 1046 Los Angeles Santa Clara River bed in Soledad Canyon, near bridge on road to Mint Canyon. 442 Comment
  RSA82575  Stachys albens F. W. Peirson 1924-8-23 5055 Los Angeles West Fork of San Gabriel River. 412 Comment
  RSA83395  Dudleya densiflora F. W. Peirson 1919-7-1 517 Los Angeles Fish Canyon 274 Comment
  RSA84271  Ranunculus aquatilis var. capillaceus F. W. Peirson 1922-4-28 2921 Los Angeles Chino Creek, south of Ontario 152 Comment
  RSA84378  Lithophragma bolanderi F. W. Peirson 1922-6-3 3079 Los Angeles At Collins Ranch, north slope of Liebre Mts. 1143 Comment
  RSA84458  Clematis ligusticifolia F. W. Peirson 1925-9-4 8182 Los Angeles At point slightly below foot of steep grade, Bouquet Canyon, northwest part of San Gabriel Mts. Comment
  RSA85007  Adiantum jordanii F. W. Peirson 1921-4-3 2393 Los Angeles Pacoima Canyon, W end of San Gabriel Mtns. 534 Comment
  RSA85181  Ephedra viridis F. W. Peirson 1923-5-27 3532 Los Angeles small canyon on Pinyon Ridge, Rock Creek, north slope of San Gabriel Mountains 1295 Comment
  RSA85522  Ribes amarum F. W. Peirson 1928-2-19 7686 Los Angeles Arroyo Seco 610 Comment
  RSA86729  Avena fatua F. W. Peirson 1918-04 1599 Los Angeles At 1085 New York Drive, Altadena Comment
  RSA86783  Vulpia microstachys var. pauciflora F. W. Peirson 1921-5-20 5364 Los Angeles Little Rock Creek, north slope of San Gabriel Mts. 960 Comment
  RSA86823  Heteromeles arbutifolia F. W. Peirson 1907-7-1 694 Los Angeles Catalina Island. Comment
  RSA87092  Lupinus bicolor F. W. Peirson 1919-5-10 413 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mountains. 838 Comment
  RSA87117  Agrostis stolonifera F. W. Peirson 1923-8-31 4015 Los Angeles Big Pines Camp, north side of San Gabriel Mountains. 2088 Comment
  RSA87219  Lupinus peirsonii F. W. Peirson 1930-5-30 8904 Los Angeles North slope of Rock Creek 1372 Comment
  RSA87220  Lupinus peirsonii F. W. Peirson 1926-4-27 6671 Los Angeles North side of Rock Creek Canyon, north slope of San Gabriel Mountains 1372 Comment
  RSA87325  Muhlenbergia microsperma F. W. Peirson 1927-3-20 7118 Los Angeles Summit of ridge south of Malibu Lake Comment
  RSA87351  Elymus stebbinsii F. W. Peirson 1920-6-10 2158 Los Angeles Maple Springs Trail to Mt. Lowe 1219 Comment
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Jul 19 2008
  RSA87422  Lupinus polyphyllus subsp. bernardinus F. W. Peirson 1923-5-21 3520 Los Angeles Fish Canyon, San Bernardino Mountains 686 Comment
  RSA87441  Melica imperfecta F. W. Peirson 1923-4-12 3420 Los Angeles Wilson's Cove, San Clemente Island Comment
  RSA94958  Malacothrix clevelandii F. W. Peirson 1920-6-10 4314 Los Angeles Maple Springs Trail to Mt. Lowe 1219 Comment
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Jul 19 2008
  SD58283  Nemophila menziesii var. integrifolia Frank W. Peirson 1918-5-19 166 Los Angeles San Gabriel Mountains; Millards Canyon. 609 Comment
  SD70410  Viola pedunculata Frank W. Peirson 1919-3-27 332 Los Angeles Foot of Lukens Peak trail, San Gabriel Mountains 579 Comment
  SD87860  Lemmonia californica F. W. Peirson 1919-5-10 396 Los Angeles Arraster, San Gabriel Mountains. 914 Comment
  SEINET209192  Artemisia californica F. W. Peirson 1918-9-15 245 Los Angeles Los Angeles County: Near foot of Sister Elsie Peak trail. San Gabriel Mountains. 640 Comment
  UC511863  Descurainia sophia Frank W. Peirson 1933-5-13 10665 Los Angeles 12 mi ne Lancaster Comment
  UC511917  Phacelia fremontii Frank W. Peirson 1933-5-13 10633 Los Angeles 10 mi s Muroc Comment
  UC908886  Gilia ochroleuca subsp. bizonata F. W. Peirson 1923-5-26 3534 Los Angeles Rock Creek Divide San Gabriel Mountains, Rock Creek Divide Comment
  UCR142885  Arenaria macradenia F. W. Peirson 1923-5-25 4286 Los Angeles Transverse Ranges; Liebre Mtns region, summit of Mint Canyon Grade, SW Mojave Desert 976 Comment
  UCR168450  Gilia leptantha subsp. transversa F. W. Peirson 1921-5-20 4132 Los Angeles Transverse Ranges; San Gabriel Mountains, Little Rock Creek 1006 Comment
  CAS-BOT-BC12818  Lepidium perfoliatum Frank W. Peirson 1933-5-13 10666 Los Angeles 12 miles northeast of Lancaster. Comment
  CAS-BOT-BC392357  Thalictrum fendleri Frank W. Peirson 1921-7-17 4688 Los Angeles San Gabriel Mts. Prairie Fork of San Gabriel Riv. Comment
  CAS-BOT-BC419013  Persicaria lapathifolia Frank W. Peirson 1924-8-23 5151 Los Angeles West fork of San Gabriel River, just above forks, San Gabriel Mountains 411 Comment
  CAS-BOT-BC428418  Lithophragma tenellum F. W. Peirson 1921-6-16 2442 Los Angeles Trail north of Mt. Waterman, San Gabriel Mts. 1828 Comment
  CAS-BOT-BC514944  Eriastrum sapphirinum subsp. brevibracteatum F. W. Peirson 1921-7-1 922 Los Angeles Arraster Creek, San Gabriel Mts. 944 Comment
  CAS-BOT-BC67710  Pellaea andromedifolia Frank W. Peirson 1919-12-2 1513 Los Angeles San Gabriel Mts. - West Fork Rubio 685 Comment
  JEPS14823  Sisymbrium irio Frank W. Peirson 1923-3-23 3355 Los Angeles streets of Claremont Claremont Comment
  JEPS23355  Delphinium cardinale Frank W. Peirson 1918-6-28 49 Los Angeles foothills e Rubio Canyon (ne of Altadena); Angeles National Forest 609 Comment
  JEPS2823  Rorippa curvipes var. truncata Frank W. Peirson 1921-6-19 2450 Los Angeles Crystal Lake San Gabriel Mountains, North Fork San Gabriel River; Crystal Lake, North Fork, San Gabriel River, San Gabriel Mts. 1676 Comment
  JEPS47135  Cuscuta subinclusa Frank W. Peirson 1918-6-28 150 Los Angeles e of Rubio Canyon 609 Comment
  JEPS51799  Eschscholzia californica Frank W. Peirson 1919-2-12 319 Los Angeles Arroyo Seco San Gabriel Mts. 457 Comment
  JEPS62154  Smilacina stellata Frank W. Peirson 1920-9-14 1682 Los Angeles Coldwater Cienega San Gabriel Mountains 2133 Comment
  JEPS63349  Monardella linoides var. stricta Frank W. Peirson 1922-7-5 3160 Los Angeles near Swartout Valley (Le Montaine Creek, n of Big Pines); San Gabriel Mts. 2225 Comment
  JEPS6758  Cordylanthus rigidus subsp. setiger Frank W. Peirson 1918-9-15 255 A Los Angeles due e Tujunga (Sister Elsie Trail); San Gabriel Mts. 1219 Comment
  JEPS69451  Gilia angelensis Frank W. Peirson 1918-5-26 157 Los Angeles Hennigers Flats San Gabriel Mts., Hennigers Flats 868 Comment
  JEPS69536  Gilia capitata subsp. abrotanifolia Frank W. Peirson 1918-6-4 154 Los Angeles e Rubio Canyon (San Gabriel Mountains); , e of Rubio Canyon 609 Comment
  JEPS9847  Castilleja miniata Frank W. Peirson 1920-9-14 2286 Los Angeles Coldwater Canyon; San Gabriel Mountains 2133 Comment
  JEPS9863  Mimulus pilosus Frank W. Peirson 1921-7-19 2514 Los Angeles Cattle Canyon San Gabriel Mountains, San Gabriel River 792 Comment
  LA38972  Mimulus guttatus Frank W. Peirson; 1918-5-19 197 Los Angeles San Gabriel Mountains, Trail from Dawn Station to Dawn Mine Comment
  PASA1287  Stellaria nitens Frank W. Peirson 1929-4-23 Los Angeles Forks of the San Gabriel River 533 Comment
  PASA1607  Papaver californicum Frank W. Peirson 1921-4-10 Los Angeles Trail to Sycamore Flat, San Dimas Region 533 Comment
  PASA1801  Aster canescens Frank W. Peirson 1923-8-30 Los Angeles North of Big Pines Auto Camp 1310 Comment
  PASA2004  Amsinckia tessellata Frank W. Peirson 1930-5-12 Los Angeles Along Blvd. about opposite Acton Comment
  PASA2063  Streptanthus major Frank W. Peirson 1933-7-5 Los Angeles Mountain north of Big Pines Camps 2133 Comment
  PASA392  Brassica adpressa Frank W. Peirson 1924-10-26 Los Angeles Arroyo Seco, along stream below California Sreet Bridge 198 Comment
  PASA987  Castilleja montana Frank W. Peirson 1921-7-17 Los Angeles Praire Fork of the San Gabriel River 2133 Comment
  POM175491  Descurainia pinnata subsp. halictorum F. W. Peirson 1922-7-6 5329 Los Angeles Big Pines Camp 2088 Comment
  POM18747  Chenopodium murale F. W. Peirson 1923-4-9 3481 Los Angeles San Clemente Island: Lemon Tank. Comment
  POM47060  Arenaria serpyllifolia subsp. serpyllifolia F. W. Peirson 1924-5-27 4622 Los Angeles Colby s Ranch. San Gabriel Mountains. 3018 Comment
  POM47637  Viola purpurea subsp. mohavensis F. W. Peirson 1919-5-10 745 Los Angeles Mount Gleason 1738 Comment
  POM9851  Eriogonum brachyanthum F. W. Peirson 1921-5-19 s.n. Los Angeles Little Rock Creek. 976 Comment
  POM9913  Cheilanthes covillei F. W. Peirson 1921-5-3 2404 Los Angeles Bear Canyon Ridge west of Mt. Lowe 1219 Comment
  POM9942  Layia glandulosa F. W. Peirson 1921-7-3 s.n. Los Angeles 2 miles east of Rock Creek 2287 Comment
  RSA0000378  Habenaria leucostachys var. virida Frank W. Peirson 1918-7-8 12 Los Angeles San Antonio Canyon, San Gabriel Mountains. Comment
  RSA0006818  Astragalus miguelensis F. W. Peirson 1923-4-8 3467 Los Angeles On south side of San Clemente Island. Comment
  RSA0010748  Senecio astephanus F. W. Peirson 1920-6-10 1432 Los Angeles Trail east of Inspiration Point. San Gabriel Mts. 1372 Comment
  RSA0017015  Quercus kelloggii F. W. Peirson 1919-6-14 1708 Los Angeles Rock Creek, north slope of San Gabriel Mountains. 1982 Comment
  RSA0059337  Pentagramma triangularis F. W. Peirson 1919-12-2 1502 Los Angeles West fork of Rubio Canyon, south base of San Gabriel Mts. 655 Comment
  RSA0060162  Poa secunda subsp. secunda F. W. Peirson 1918-5-19 1548 Los Angeles Along trolley track on Echo Mt., San Gabriel Range. 1066 Comment
  RSA0063155  Andropogon glomeratus var. scabriglumis F. W. Peirson 1918-10-16 1571 Los Angeles Near foot of Pacoima Canyon, west end of San Gabriel Mts. Comment
  RSA0063244  Heuchera elegans F. W. Peirson 1924-5-27 4639 Los Angeles San Gabriel Mountains. North slope, Strawberry Peak. 1753 Comment
  RSA0063268  Heuchera elegans F. W. Peirson 1905-1 s.n. Los Angeles Mt. Lowe, San Gabriel Mountains. Comment
  RSA0079411  Cryptantha muricata var. jonesii F. W. Peirson 1919-5-7 1024 Los Angeles South side of New York Drive, Altadena, (east of Hill Ave.). Comment
  RSA0104651  Eriastrum densifolium subsp. austromontanum F. W. Peirson 1919-7-29 521 Los Angeles Summit of Mt. Wilson, San Gabriel Mountains 1738 Comment
  RSA0117386  Collinsia parryi F. W. Peirson 1921-6-14 2828 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains. 1250 Comment
  RSA0128610  Arabis repanda var. repanda F. W. Peirson 1921-6-16 2498 Los Angeles North slope of Mt. Waterman, San Gabriel Mts. 1981 Comment
  RSA0128662  Arabis repanda var. repanda F. W. Peirson 1919-6-14 507 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1707 Comment
  RSA100232  Lobelia dunnii var. serrata F. W. Peirson 1918-8-6 260 Los Angeles Sierra Madre Trail to Mt. Wilson 838 Comment
  RSA100275  Plectritis ciliosa subsp. insignis F. W. Peirson 1925-4-23 5807 Los Angeles San Gabriel River 366 Comment
  RSA100336  Heterocodon rariflorum F. W. Peirson 1921-6-14 1210 Los Angeles Trail fork of San Gabriel River 990 Comment
  RSA64780  Oxytheca perfoliata F. W. Peirson 1917-5-13 1784 Los Angeles W. Mojave Desert. Comment
  RSA64803  Chenopodium berlandieri var. sinuatum F. W. Peirson 1924-10-26 5258 Los Angeles Arroyo Seco, below California St. bridge, Pasadena 198 Comment
  RSA64807  Chenopodium californicum F. W. Peirson 1919-5-26 348 Los Angeles New York Ave. in the Rubio Wash, Altadena. Comment
  RSA65243  Chorizanthe procumbens F. W. Peirson 1919-5-20 446 Los Angeles Foot of Arroyo Seco Canyon, South base of San Gabriel Mountains 381 Comment
  RSA65504  Minuartia douglasii F. W. Peirson 1920-6-10 5316 Los Angeles below Inspiration Point, Mt. Lowe. 1341 Comment
  RSA65609  Cerastium glomeratum F. W. Peirson 1865 Los Angeles Altadena. Comment
  RSA65616  Cerastium glomeratum F. W. Peirson 1919-5-18 438 Los Angeles Hills east of Monrovia Canyon 457 Comment
  RSA65688  Portulaca oleracea F. W. Peirson 1861 Los Angeles Altadena. Comment
  RSA65739  Claytonia perfoliata subsp. mexicana F. W. Peirson 1919-1-5 35 Los Angeles Monrovia Canyon, San Gabriel Mountains 579 Comment
  RSA65824  Sisymbrium officinale F. W. Peirson 1920-4-25 2109 Los Angeles Arroyo Seco, west of Pasadena 411 Comment
  RSA65870  Polygonum hydropiperoides var. asperifolium F. W. Peirson 1923-1-21 1792 Los Angeles Pond north of East Lake Park, Los Angeles. Comment
  RSA65894  Centrostegia thurberi var. thurberi F. W. Peirson 1930-5-31 8909 Los Angeles Below Lovejoy Dam, Lovejoy Buttes, southwestern Mojave Desert. Comment
  RSA65921  Rumex crispus F. W. Peirson 1930-5-31 8913 Los Angeles Below Lovejoy Dam, Lovejoy Buttes, southwestern Mojave Desert. Comment
  RSA66026  Eriogonum gracile var. gracile F. W. Peirson 1918-11-2 296 Los Angeles Hennigers Flat, north San Gabriel Mts. 854 Comment
  RSA66085  Tropidocarpum gracile F. W. Peirson 1903-2-24 1902 Los Angeles Eagle Rock Valley Comment
  RSA66323  Polygonum lapathifolium F. W. Peirson 1923-10-10 4160 Los Angeles Santa Clara River at crossing north of Saugus. Comment
  RSA66531  Athysanus pusillus F. W. Peirson 1921-3-3 663 Los Angeles Arroyo Seco, near Pasadena 350 Comment
  RSA66757  Caulanthus heterophyllus var. heterophyllus F. W. Peirson 1919-3-30 666 Los Angeles Tujunga Canyon, west end of San Gabriel Mts. Comment
  RSA66789  Thysanocarpus laciniatus F. W. Peirson 1919-3-30 664 Los Angeles Tujunga Canyon. 457 Comment
  RSA67160  Galium nuttallii subsp. nuttallii F. W. Peirson 1919-3-11 2653 Los Angeles Small Canyon east of Rubio Canyon south base of San Gabriel Mtns. at 1800 ft. 549 Comment
  RSA67376  Guillenia lasiophylla F. W. Peirson 1919-5-14 4431 Los Angeles Eaton Canyon 762 Comment
  RSA68688  Muilla maritima F. W. Peirson 5 Los Angeles east bank of Arroyo Seco, Pasadena. Comment
  RSA68784  Delphinium parishii subsp. parishii F. W. Peirson 1919-5-11 419 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mountains. 915 Comment
  RSA68975  Plantago erecta F. W. Peirson 1919-3-27 329 Los Angeles Arroyo Seco near Pasadena 412 Comment
  RSA69266  Chimaphila menziesii F. W. Peirson 1919-7-29 524 Los Angeles Summit of Mt. Wilson, San Gabriel Mountains 1738 Comment
  RSA69576  Mentzelia micrantha F. W. Peirson 1925-4-23 5797 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA69593  Triglochin maritima F. W. Peirson 1918-08 1542 Los Angeles Long Beach Comment
  RSA69803  Centaurium venustum F. W. Peirson 1921-7-19 144 Los Angeles At forks of Coldwater Canyon and Cattle Canyon, East Fork San Gabriel Canyon 793 Comment
  RSA69979  Abronia pogonantha F. W. Peirson 1923-5-27 5215 Los Angeles Pallett Creek, tributary to Rock Creek, north slope of San Gabriel Mts. 1098 Comment
  RSA70012  Amaranthus blitoides F. W. Peirson 1932-8-15 10416 Los Angeles Vacant lot at Walnut and Hill, Pasadena Comment
  RSA70545  Euphorbia spathulata F. W. Peirson 1908-4-18 2037 Los Angeles Point Fermin Comment
  RSA71837  Gilia leptantha subsp. transversa F. W. Peirson 1926-4-26 6659 Los Angeles 2 miles southeast of Little Rock. Comment
  RSA72220  Gaura sinuata F. W. Peirson 1920-6-13 2160 Los Angeles Altadena, at northwest corner of N.Y. Ave. and Maiden Lane. Comment
  RSA72318  Gilia aliquanta subsp. aliquanta F. W. Peirson 1926-5-8 6730 Los Angeles Road to Los Angeles County playgrounds about 1/4 mile from Rock Creek north slope of San Gabriel Mtns. 1250 Comment
  RSA72325  Gilia minor F. W. Peirson 1926-4-26 6657 Los Angeles about 1 mile east of Palmdale. Comment
  RSA73006  Linanthus parryae F. W. Peirson 1917-5-13 945 Los Angeles West of Little Rock. Comment
  RSA73033  Leptosiphon breviculus F. W. Peirson 1922-7-5 4709 Los Angeles 0.5 mile east of Big Pines, San Gabriel Mtns. 2027 Comment
  RSA73130  Navarretia hamata subsp. hamata F. W. Peirson 1917-5-14 949 Los Angeles San Gabriel River was at foothill Boulevard Comment
  RSA75507  Phacelia brachyloba F. W. Peirson 965 Los Angeles Las Flores Canyon; San Gabriel Mts. Comment
  RSA75931  Phacelia austromontana F. W. Peirson 1921-7-3 2486 Los Angeles on trail northeast of Rock Creek divide Comment
  RSA75984  Eucrypta chrysanthemifolia F. W. Peirson 1930-5-30 8902 Los Angeles Mint Canyon 610 Comment
  RSA76283  Eriastrum sapphirinum subsp. dasyanthum F. W. Peirson 1956-11-2 156 Los Angeles Mt. Wilson Road, San Gabriel Mts Comment
  RSA77181  Modiola caroliniana F. W. Peirson 2052 Los Angeles Wilson s Lake, Altadena Comment
  RSA77197  Eremalche exilis F. W. Peirson 1923-5-27 3539 Los Angeles Pallett Creek, tributary to Rock Creek, north slope of San Gabriel Mts. 1098 Comment
  RSA77809  Pholisma arenarium F. W. Peirson 1904-8-22 1177 Los Angeles Playa del Rey, coast of Los Angeles Co. Comment
  RSA79847  Penstemon labrosus F. W. Peirson 1923-8-31 4031 Los Angeles Just below summit of Blue Ridge, 3-4 miles east of Big Pines, San Gabriel Mtns. 2591 Comment
  RSA80075  Mimulus floribundus F. W. Peirson 1916-06 1123 Los Angeles Arroyo Seco, near Pasadena Comment
  RSA80135  Mimulus guttatus F. W. Peirson 1904-8-28 1128 Los Angeles Little Santa Anita Canyon, San Gabriel Mountains. Comment
  RSA80495  Mimulus fremontii F. W. Peirson 1917-5-13 1129 Los Angeles Roadside bear Little Rock, Antelop Valley. Comment
  RSA82360  Scutellaria tuberosa F. W. Peirson 1925-4-23 5804 Los Angeles San Gabriel River 366 Comment
  RSA84262  Azolla filiculoides Frank W. Peirson 1924-10-26 5257 Los Angeles Arroyo Seco, about 0.5 mile below California Street, Pasadena, 198 Comment
  RSA84474  Ceratophyllum demersum F. W. Peirson 1921-6-19 2614 Los Angeles Crystal Lake, North Fork San Gabriel River 1676 Comment
  RSA84989  Ruppia cirrhosa F. W. Peirson 1918-6-16 1540 Los Angeles Small lake south of Palmdale, west Mojave Desert. Comment
  RSA84997  Dryopteris arguta F. W. Peirson 1906-7-24 s.n. Los Angeles Verdugo Mountains Comment
  RSA85011  Adiantum aleuticum F. W. Peirson 1919-12-28 1522 Los Angeles Eaton Canyon, south base of San Gabriel Mts. 1066 Comment
  RSA85193  Sparganium erectum subsp. stoloniferum F. W. Peirson 1919-07 1534 Los Angeles Ballona Marsh. Comment
  RSA87113  Galium angustifolium subsp. angustifolium F. W. Peirson 1918-6-28 213 Los Angeles Foothills of Mt. Lowe, near Rubio Canyon 610 Comment
  RSA87207  Lupinus andersonii F. W. Peirson 1923-8-31 4030 Los Angeles Blue Ridge, eastern San Gabriel Mountains near line between Los Angeles and San Bernardino counties. 2591 Comment
  RSA87314  Lupinus concinnus F. W. Peirson 1919-5-11 2436 Los Angeles Arraster [Arrastre] Creek, north slope of San Gabriel Mts. 853 Comment
  RSA90151  Astragalus didymocarpus var. didymocarpus F. W. Peirson 1920-3-28 2102 Los Angeles Low hill at foot of Tujunga Canyon, west end of San Gabriel Mtns. 457 Comment
  RSA90161  Astragalus didymocarpus var. dispermus F. W. Peirson 1929-5-11 398 Los Angeles Arraster Creek, north slope of San Gabriel Mtns. 854 Comment
  RSA90226  Astragalus douglasii var. douglasii F. W. Peirson 1918-6-16 582 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1448 Comment
  RSA90277  Lathyrus vestitus var. vestitus F. W. Peirson 1925-4-23 5796 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA90313  Lotus salsuginosus var. salsuginosus F. W. Peirson 1925-4-23 5795 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA90413  Lotus oblongifolius var. oblongifolius F. W. Peirson 1904-8-28 4079 Los Angeles Little Santa Anita Canyon, south base of San Gabriel Mts. Comment
  RSA90850  Carex senta F. W. Peirson 1919-5-14 1625 Los Angeles W fork of Eaton Canyon 822 Comment
  RSA91007  Conyza canadensis F. W. Peirson 1919-09 273 Los Angeles Weed at 1085 New York Drive, Altadena Comment
  RSA91127  Trifolium microcephalum F. W. Peirson 1923-4-9 3435 Los Angeles San Clemente Island: 2 miles SE of Wilsons Cove Comment
  RSA91156  Lessingia glandulifera var. glandulifera F. W. Peirson 1919-8-30 1261 Los Angeles Desert between Mojave and Lancaster. Comment
  RSA91229  Lupinus formosus var. formosus F. W. Peirson 1919-3-11 90 Los Angeles First small canyon east of Rubio Canyon, south base of San Gabriel Mts. 534 Comment
  RSA91265  Lupinus longifolius F. W. Peirson 1920-5-14 2147 Los Angeles Lukens Peak, San Gabriel Mts, Los Angeles Count, Alt 3000-3500ft 915 Comment
  RSA91275  Isocoma menziesii var. vernonioides F. W. Peirson 1924-10-19 5227 Los Angeles Clearwater. Comment
  RSA91283  Lessingia glandulifera var. glandulifera F. W. Peirson 1918-10-26 294 Los Angeles South base of San Gabriel Mountains, Big Dalton Canyon. 610 Comment
  RSA91306  Vicia americana F. W. Peirson 1907-7-9 2016 Los Angeles East Fork of Alder Creek, San Gabriel Mts Comment
  RSA91592  Carex mesochorea F. W. Peirson 1929-5-10 8365 Los Angeles Altadena. Comment
  RSA91603  Carex multicaulis F. W. Peirson 1924-5-27 4626 Los Angeles north slope of Strawberry Peak, San Bernardino Mts. 1524 Comment
  RSA91690  Bromus diandrus F. W. Peirson 1924-5-27 4621 Los Angeles San Gabriel Mountains. North slope, Strawberry Peak. 1753 Comment
  RSA91758  Gnaphalium californicum F. W. Peirson 1919-1-26 235 Los Angeles Hills east of Rubio Canyon 548 Comment
  RSA91966  Elymus elymoides subsp. californicus F. W. Peirson 1922-7-6 3153 Los Angeles Pleasant View Ridge, San Gabriel Mountains. 2561 Comment
  RSA92043  Bromus carinatus F. W. Peirson 1918-4-28 1558 Los Angeles Road east and south of El Monte. Comment
  RSA92096  Cyperus rotundus F. W. Peirson 1922-8-1 3265 Los Angeles High school (later Junior College) grounds of Colorado St., Pasadena, California Comment
Read comments
Oct 7 2010
  RSA92284  Layia glandulosa F. W. Peirson 1925-4-23 5803 Los Angeles River bottom, San Gabriel River 396 Comment
  RSA92300  Cyperus virens F. W. Peirson 1918-4-28 1609 Los Angeles Southeast of El Monte. Comment
  RSA92323  Poa secunda var. secunda F. W. Peirson 1918-6-10 5367 Los Angeles Summit of San Gabriel Peak 1860 Comment
  RSA92381  Psilocarphus brevissimus F. W. Peirson 1304 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA92389  Eriophyllum nevinii F. W. Peirson 1923-4-10 3477 Los Angeles North slopes or on sea bluffs, San Clemente Island Comment
  RSA92397  Eriophyllum pringlei F. W. Peirson 1917-5-12 1386 Los Angeles County public camp ground in Mint Canyon, northwest corner of San Gabriel Mts. Comment
  RSA92423  Helianthus gracilentus F. W. Peirson 1921-7-19 2783 Los Angeles San Gabriel Mts: junction of Coldwater Canyon and Cattle Canyon 793 Comment
  RSA92539  Eriophyllum wallacei F. W. Peirson 1919-5-9 1391 Los Angeles San Gabriel Mountains. 838 Comment
  RSA92608  Salix exigua F. W. Peirson 1919-3-30 355 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains 396 Comment
  RSA92643  Salix lasiolepis F. W. Peirson 1924-12-3 9604 Los Angeles San Gabriel Wash at Foothill Boulevard, Azusa. Comment
  RSA92656  Eriophyllum confertiflorum var. confertiflorum F. W. Peirson 1920-9-12 2276 Los Angeles South trail to Mt. San Antonio 2438 Comment
  RSA92657  Eriophyllum confertiflorum var. confertiflorum F. W. Peirson 1921-7-19 2711 Los Angeles San Gabriel Mountains. 1981 Comment
  RSA92861  Chaenactis santolinoides F. W. Peirson 1928-6-2 7932 Los Angeles S fork of Rock Creek: trail toward the summit. 1982 Comment
  RSA92862  Chaenactis santolinoides F. W. Peirson 1921-6-18 2710 Los Angeles divide north of Mt. Islip 2042 Comment
  RSA92869  Urtica urens F. W. Peirson 1919-10 1713 Los Angeles weed in Altadena. Comment
  RSA92920  Lasthenia californica F. W. Peirson 1918-4-28 1371 Los Angeles Summit of Turnbull Canyon, hills above Whittier Comment
  RSA92924  Lasthenia californica F. W. Peirson 1923-4-9 3425 Los Angeles San Clemente Island: Wilson's Cove Comment
  RSA92990  Lasthenia coronaria F. W. Peirson 1912-03 s.n. Los Angeles Rubio Wash, south base of San Gabriel Mountains Comment
  RSA93639  Antennaria dimorpha F. W. Peirson 1921-6-15 2492 Los Angeles Pine Flats, headwaters of Tujunga 1677 Comment
  RSA93803  Chaenactis glabriuscula var. glabriuscula F. W. Peirson 1919-3-30 4745 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains 457 Comment
  RSA93811  Chaenactis fremontii F. W. Peirson 1930-5-30 8905 Los Angeles 1 miles N of Llano Comment
  RSA94119  Brickellia californica F. W. Peirson 1918-9-7 221 Los Angeles Upper end of Eaton Canyon 1524 Comment
  RSA94120  Brickellia californica F. W. Peirson 1921-10-22 2599 Los Angeles Head of Eaton Canyon, base of San Gabriel peak. 1646 Comment
  RSA94367  Chaenactis glabriuscula F. W. Peirson 1919-5-21 243 Los Angeles Arroyo Seco, Pasadena. 533 Comment
  RSA94373  Madia exigua F. W. Peirson 1921-6-21 2446 Los Angeles West Fork of San Gabriel River 610 Comment
  RSA94404  Artemisia douglasiana F. W. Peirson 1918-9-15 246 Los Angeles lower part of trail up Lukens Peak 762 Comment
  RSA94677  Senecio mikanioides F. W. Peirson 1906-7-10 1434 Los Angeles Rustic Canyon, Santa Monica Mountains Comment
  RSA94681  Packera ionophylla F. W. Peirson 1924-5-27 4641 Los Angeles north slope of Strawberry Peak, San Bernardino Mts. 1524 Comment
Read comments
Dec 19 2011
  RSA94810  Acourtia microcephala F. W. Peirson 1919-7-1 520 Los Angeles South base of San Gabriel Mtns, Fish Canyon. 457 Comment
  RSA94821  Hypochaeris radicata F. W. Peirson 1920-6-13 2136 Los Angeles Colorado Street, Pasadena Comment
  RSA94845  Senecio vulgaris F. W. Peirson 1918-10-21 290 Los Angeles Ovid's Camp, west fork of San Gabriel River. Comment
  RSA94933  Tetradymia axillaris var. longispina F. W. Peirson 1921-5-20 1429 Los Angeles Little Rock Creek, N slope of San Gabriel Mts 1037 Comment
  RSA95004  Malacothrix glabrata F. W. Peirson 1917-5-13 1477 Los Angeles Near Little Rock, Mojave Desert. Comment
  RSA95030  Malacothrix foliosa F. W. Peirson 1923-4-12 3463 Los Angeles Wilson's Cove, San Clemente Island. Comment
  RSA95047  Hemizonia parryi subsp. australis F. W. Peirson 1920-6-22 1352 Los Angeles Along Valley Boulevard at Bassett Comment
  RSA95133  Crepis acuminata F. W. Peirson 1921-7-17 2507 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2012 Comment
  RSA95288  Vitis girdiana F. W. Peirson 1951-1 741 Los Angeles Oak Knoll, south of Pasadena. Comment
  RSA95327  Malacothamnus fasciculatus F. W. Peirson 1918-10-26 114 Los Angeles Big Dalton Canyon, south base of San Gabriel Range. 762 Comment
  RSA95346  Ceanothus oliganthus var. oliganthus F. W. Peirson, Ruth Conrad 1926-3-20 6513 Los Angeles Arroyo Seco. 1006 Comment
  RSA95404  Ceanothus integerrimus F. W. Peirson 1920-5-16 2138 Los Angeles Delta Canyon branch of Tujunga Canyon, west end of San Gabriel Mountains 518 Comment
  RSA97152  Lomatium dasycarpum subsp. dasycarpum F. W. Peirson 1919-3-27 338 Los Angeles Foot of trail to Lukens Peak 609 Comment
  RSA97161  Lomatium dissectum var. multifidum F. W. Peirson 1922-7-6 3187 Los Angeles Swartout Valley region. Big Pines, north side of San Gabriel Mtns. 2073 Comment
  RSA97162  Lomatium dissectum var. multifidum F. W. Peirson 1922-6-3 3080 Los Angeles 3 miles west of Elizabeth Lake. 1113 Comment
  RSA97208  Lomatium dasycarpum subsp. dasycarpum F. W. Peirson 1920-5-8 2312 Los Angeles San Raphael Hills Comment
  RSA97227  Garrya flavescens var. pallida F. W. Peirson 1920-6-10 822 Los Angeles Trail from San Gabriel Peak to Mt. Wilson, San Gabriel Mts. 1677 Comment
  RSA97296  Garrya veatchii F. W. Peirson 1919-11-30 2723 Los Angeles South base of San Gabriel Mnts., Middle Eaton Canyon. 610 Comment
  RSA97402  Yabea microcarpa F. W. Peirson 1920-5-28 132 Los Angeles San Gabriel Mountains, San Antonia Canyon, Los Angeles and San Bernardino County lines 1341 Comment
  RSA97405  Torilis nodosa F. W. Peirson 1908-5-28 2093 Los Angeles Bixby Ranch near Long Beach. Comment
  RSA97413  Tauschia parishii F. W. Peirson 1908-05 136 Los Angeles summit of Mt. Lowe Comment
  RSA98334  Berula erecta F. W. Peirson 1920-6-22 2206 Los Angeles Bassett, near El Monte. Comment
  RSA99343  Sambucus mexicana F. W. Peirson 1919-4-24 391 Los Angeles Small Canyon E of Rubio Canyon 548 Comment
  SD82795  Viola purpurea subsp. mohavensis F. W. Peirson 1919-5-10 745 Los Angeles Trail to Mt. Gleason, San Gabriel Mountains. 1735 Comment
  SEINET10840483  Heterocodon rariflorum Frank W. Peirson 1921-6-14 Peirson 1210 Los Angeles TRAIL FORK OF SAN GABRIEL RIVER Comment
  SEINET10939154  Nemacladus sigmoideus Frank W. Peirson 1927-5-7 Peirson 7265 Los Angeles Comment
  UC218118  Clarkia heterandra F. W. Peirson 1922-6-3 Los Angeles Liebre Mts. 1143 Comment
  UCSB24350  Potamogeton amplifolius Peirson, Frank 1921-6-19 Los Angeles Crystal Lake, San Gabriel Mountains 1676 Comment
  CAS-BOT-BC18111  Carex athrostachya Frank W. Peirson 1934-7-18 11267 Madera Middle Fork San Joaquin River. Pumice Flat. 2316 Comment
  RSA0063125  Heuchera rubescens var. alpicola F. W. Peirson 1934-7-18 11326 Madera At the foot of Rainbow Falls. Middle Fork of San Joaquin River. 2165 Comment
  RSA72029  Polemonium occidentale F. W. Peirson 1914-8-15 902 Madera Devils Post Pile, Sierra Nevada 2287 Comment
  RSA72180  Epilobium hornemannii subsp. hornemannii F. W. Peirson 1914-08 2305 Madera Minaret Creek, Sierra Nevada Comment
  RSA74843  Phacelia mutabilis F. W. Peirson 1934-7-18 11265 Madera Reds Meadow, Middle Fork of San Joaquin River. 2287 Comment
  RSA80092  Mimulus tilingii F. W. Peirson 1914-8-22 1134 Madera Near Agnew's Pass, Sierra Nevada. 3018 Comment
  RSA88668  Carex illota F. W. Peirson 1914-8-15 1631 Madera Devil s Post Pile. 2317 Comment
  POM175482  Sidalcea malviflora subsp. laciniata Mabel Peirson 1926-3-28 6528 Marin Marin County: Elk Valley Comment
  POM231939  Lonicera involucrata var. ledebourii F. W. Peirson 1936-7-15 11833 Marin Point Reyes Peninsula. Comment
  RSA70603  Iris douglasiana Mabel Peirson 1926-3-28 6532 Marin Marin County: Elk Valley Comment
  RSA74863  Phacelia californica Mabel Peirson 1912-07 969 Marin Mt. Tamalpais Comment
  RSA75877  Nemophila menziesii var. atomaria Mabel Peirson 1926-3-28 6535 Marin Tennessee Cove. Comment
  RSA80645  Hypericum concinnum Mabel Peirson 1926-5-31 2071 Marin Mt. Tamalpais Comment
  RSA82078A  Orobanche fasciculata var. franciscana F. W. Peirson 1912-07 s.n. Marin Mt. Tamalpais. Comment
  RSA95382  Sidalcea malviflora subsp. laciniata Mabel Peirson 1926-3-28 6528 Marin Marin County: Elk Valley Comment
  RSA95389  Sidalcea malviflora subsp. laciniata F. W. Peirson, Mabel Peirson 1926-4-1 6552 Marin Roadside along coast highway just south of Sonoma County Line. Comment
  SD87711  Castilleja exserta subsp. latifolia Frank W. Peirson 1936-7-15 11834 Marin Point Reyes, open sea bluffs near the lighthouse Comment
  CAS-BOT-BC93719  Artemisia norvegica subsp. saxatilis F. W. Peirson 1927-8-6 7662 Mariposa Porcupine Flat 2438 Comment
  PASA1283  Stellaria jamesiana Frank W. Peirson 1927-8-6 Mariposa Porcupine flat Comment
  PASA2067  Streptanthus tortuosus var. orbiculatus Frank W. Peirson 1930-8-15 Mariposa Lake Tenaya Region. Rocky terrain in Murphy creek 2529 Comment
  PASA2865  Ribes montigenum F. W. Peirson 1921-7-8 Y 93 Mariposa Ten Lakes Comment
  PASA2869  Castilleja culbertsonii F. W. Peirson 1921-7-8 Y 90 Mariposa lake margins, Ten Lakes Comment
  PASA340  Scorzonella nutans Frank W. Peirson 1927-8-6 Mariposa Porcupine Flat 2438 Comment
  RSA66851  Streptanthus tortuosus F. W. Peirson 1927-8-6 7654 Mariposa May Lake, Sierra Nevada. 2820 Comment
  RSA74830  Phacelia hydrophylloides F. W. Peirson 1927-8-5 7641 Mariposa Murphy Creek, Lakke Tenaya, Sierra Nevada. 2515 Comment
  RSA80451  Mimulus moschatus var. longiflorus F. W. Peirson 1927-8-6 7651 Mariposa Near May Lake, Sierra Nevada. 2835 Comment
  RSA85619  Ivesia santolinoides F. W. Peirson 1927-8-6 7657 Mariposa Porcupine Flat 2439 Comment
  RSA86352  Tsuga mertensiana F. W. Peirson 1930-8-15 9224 Mariposa Between Tuolumne Meadow and Lake Tenaya, just about at the Tuolumne-Mariposa county line. 2591 Comment
  PASA1835  Ligusticum grayi Frank W. Peirson 1930-8-15 Mariposa Lake Tenaya Region 2499 Comment
  PASA2753  Rosa californica F. W. Peirson 1921-6-27 Y 12 Mariposa Yosemite Valley, Sentinal Rock Comment
  PASA2757  Viola oxyceras F. W. Peirson 1921-6-25 Y 7 Mariposa Little Yosmite Comment
  PASA2763  Collinsia torreyi F. W. Peirson 1921-6-27 Y 18 Mariposa Yosemite Valley, below Sentinal Rock Comment
  PASA2767  Eriogonum incanum F. W. Peirson 1921-7-3 Y 62 Mariposa above Merced River Comment
  PASA2773  Antennaria rosea F. W. Peirson 1921-7-3 Y 67 Mariposa above Little Yosemite Comment
  PASA2777  Gilia leptalea F. W. Peirson 1921-7-3 Y 71 Mariposa above Little Yosemite Comment
  PASA2785  Gilia aggregata F. W. Peirson 1921-7-6 Y 79 Mariposa Yosemite Creek Comment
  PASA2814  Penstemon menziesii F. W. Peirson 1921-7-9 Y 114 Mariposa Ten Lakes trail Comment
  PASA2825  Cystopteris fragilis F. W. Peirson 1921-6-28 Y 26 Mariposa Tenaya Canyon Comment
  PASA2841  Fragaria californica F. W. Peirson 1921-7-1 Y 39 Mariposa above Lake Merced Comment
  PASA2842  Brodiaea ixioides F. W. Peirson 1921-6-25 Y 11 Mariposa Little Yosemite, east bank of Merced Comment
  PASA2845  Thalictrum fendleri F. W. Peirson 1921-7-1 Y 42 Mariposa above Lake Merced Comment
  PASA2849  Ribes roezlii F. W. Peirson 1921-7-1 Y 46 Mariposa above Lake Merced Comment
  PASA2851  Eriogonum umbellatum F. W. Peirson 1921-7-1 Y 48 Mariposa granite slopes below Lake Merced Comment
  PASA2852  Sedum obtusatum F. W. Peirson 1921-7-1 Y 50 Mariposa granite slopes below Lake Merced Comment
  PASA2859  Habenaria leucostachys F. W. Peirson 1921-7-3 Y 56 Mariposa marsh along Merced Lake Trail Comment
  PASA2862  Cryptogramma acrostichoides F. W. Peirson 1921-7-3 Y 59 Mariposa glaciated granite on Merced Lake Trail Comment
  PASA2871  Caltha biflora F. W. Peirson 1921-7-8 Y 88 Mariposa Ten Lakes Comment
  PASA2872  Sedum roseum F. W. Peirson 1921-7-7 Y 86 Mariposa Ten Lakes Comment
  PASA2879  Cassiope mertensiana F. W. Peirson and A. M. Shaffer 1921-7-8 Y 98 Mariposa high ridge above Ten Lakes Comment
  RSA412334  Cordylanthus pilosus subsp. pilosus F. W. Peirson 1927-8-7 7667 Mariposa Trail from Porcupine Flat to Yosemite Point, Sierra Nevada. 2348 Comment
  RSA85036  Pellaea bridgesii F. W. Peirson 1930-8-16 9232 Mariposa In canyon below Lake Tenaya, Sierra Nevada 2470 Comment
  RSA87342  Muhlenbergia filiformis F. W. Peirson 1930-8-17 9238 Mariposa Meadow opposite Glacier Point, floor of Yosemite Valley, Yosemite National Park 1220 Comment
  RSA87414  Lupinus latifolius subsp. longipes F. W. Peirson 1930-8-15 9227 Mariposa Murphy Creek, Lake Tenaya region, Yosemite National Park. 2500 Comment
  RSA91744  Muhlenbergia montana F. W. Peirson 1935-7-19 11535 Mariposa Glaciated region north of Lake Tenaya, Sierra Nevada. 2500 Comment
  RSA92663  Eriophyllum lanatum var. integrifolium F. W. Peirson 1927-8-5 7642 Mariposa North of Lake Tenaya, Sierra Nevada 2485 Comment
  RSA93317  Aster breweri F. W. Peirson 1927-8-5 7640 Mariposa South side of May Lake, Sierra Nevada 2485 Comment
  CAS-BOT-BC213145  Sidalcea calycosa subsp. rhizomata Frank W. Peirson 1923-7-7 3773 Mendocino About 1 mile north of the Navarro River on coast. Comment
  CAS-BOT-BC418433  Boykinia occidentalis Frank W. Peirson 1941-7-23 13084 Mendocino Van Damme State Park, near sea level Comment
  HSC2960  Allium dichlamydeum F. W. Peirson 1925-8-10 6398 Mendocino Jug Handle Creek, 6 miles N of Mendocino City Comment
  POM259426  Gastridium phleoides F. W. Peirson 1932-7-6 10869 Mendocino Navarro River. Dimmick Memorial Park. Comment
  POM87056  Heterotheca sessiliflora subsp. bolanderi F. W. Peirson 1925-8-10 6417 Mendocino 1 mile S of Albion Comment
  RSA66704  Streptanthus barbiger F. W. Peirson 1923-7-7 3732 Mendocino 3 miles above Boonville Comment
Read comments
Aug 14 2013
  RSA69538  Chlorogalum pomeridianum var. pomeridianum Frank W. Peirson 1923-7-6 3677 Mendocino Indian Creek, southern Mendocino Co. Comment
  RSA70562  Vaccinium parvifolium F. W. Peirson 1923-7-7 3863 Mendocino Navarro River, 10 miles below Wendling Comment
  RSA72109  Epilobium ciliatum subsp. watsonii F. W. Peirson 1925-8-10 6383 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA80379  Daucus pusillus F. W. Peirson 1925-8-10 6358 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA86710  Lolium temulentum F. W. Peirson 1923-6-6 3648 Mendocino Indian Creek, southern Mendocino County Comment
  RSA86984  Alnus rubra F. W. Peirson 1925-8-10 6399 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA87361  Agrostis densiflora F. W. Peirson 1923-7-6 3644 Mendocino Indian Creek, southern Mendocino Co. Comment
  UCR51821  Triodanis biflora F. W. Peirson 1923-7-7 3870 Mendocino Navarro River, 10 miles below Wendling [=Navarro] Comment
  CAS-BOT-BC389131  Silene laciniata subsp. californica Frank W. Peirson 1923-7-7 3721 Mendocino About 1 mile below camp on Indian Creek and 9 miles above Booneville [Boonville] Comment
  POM87027  Eriogonum latifolium F. W. Peirson 1925-8-10 6405 Mendocino 5 miles south of Mendocino City. Comment
  POM89152  Iris macrosiphon Frank W. Peirson 1926-4-2 6566 Mendocino Near foot of Hopland Grade. Comment
  RSA0098127  Spergularia rubra F. W. Peirson 1925-8-10 6409 Mendocino Albion. Comment
  RSA576932  Plectritis macrocera F. W. Peirson 1926-4-1 6562 Mendocino Hopland. Near Russian River. Comment
  RSA65806  Lepidium didymum F. W. Peirson 1923-7-7 3733 Mendocino Navarro River. 8 miles below Wendling. Comment
  RSA69844  Piperia transversa Frank W. Peirson 1923-7-7 3700 Mendocino 5 miles NW of Boonville Comment
  RSA70599  Iris macrosiphon Frank W. Peirson, Mabel B. Peirson 1926-4-2 6566 Mendocino Near foot of Hopland Grade. Comment
  RSA74487  Phacelia grandiflora F. W. Peirson 159 Mendocino on dry bank along first main summit; between coast and Eel River. Comment
  RSA75876  Nemophila menziesii var. menziesii Mabel Peirson 1926-4-2 6568 Mendocino Roadside near foot of Hopland Grade. Comment
  RSA77189  Lavatera arborea F. W. Peirson 1941-7-23 13081 Mendocino Van Damme State Park Comment
  RSA77433  Angelica hendersonii F. W. Peirson 1923-7-9 3940 Mendocino 4 miles north of Westport Comment
  RSA80699  Circaea alpina subsp. pacifica F. W. Peirson 1923-7-8 3789 Mendocino 3 miles up Ten-Mile River Comment
  RSA84295  Tiarella trifoliata var. unifoliata F. W. Peirson 1923-7-7 3738 Mendocino Just below Wendling. Comment
  RSA84354  Boykinia occidentalis F. W. Peirson 1941-7-23 13084 Mendocino About 3 miles back from beach. Van Damme State Park. Comment
  RSA84374  Lithophragma heterophyllum F. W. Peirson, Mabel Peirson 1926-4-2 6567 Mendocino Near foot of Hopland Grade. Comment
  RSA90317  Lotus aboriginus F. W. Peirson 1923-7-7 4074 Mendocino 2 miles east of Mendocino City Comment
  RSA90409  Lotus oblongifolius var. nevadensis F. W. Peirson 1923-7-7 4073 Mendocino 2 miles east of Mendocino City. Comment
  RSA91703  Gnaphalium palustre F. W. Peirson 1923-7-6 4233 Mendocino Indian Creek, southern Mendocino Co. Comment
  RSA92677  Eriophyllum lanatum var. arachnoideum F. W. Peirson 1925-8-19 6362 Mendocino Jug Handle Creek, 6 miles N of Mendocino City Comment
  RSA92849  Madia capitata F. W. Peirson 1923-7-6 3907 Mendocino Indian Creek, southern Mendocino Co. Comment
  RSA93200  Baccharis salicifolia F. W. Peirson 1926-4-1 6557 Mendocino Banks of Russian River, Hopland Comment
  RSA94178  Hemizonia luzulifolia F. W. Peirson 1923-7-7 3903 Mendocino 5 miles west of Boonville. Comment
  RSA95334  Ceanothus integerrimus var. californicus F. W. Peirson 1926-4-1 6554 Mendocino open bank on roadside, 5 mi. north of Cloverdale. Comment
  RSA95338  Rhamnus purshiana F. W. Peirson 1923-7-8 3765 Mendocino Ten-mile River Comment
  RSA97169  Garrya elliptica F. W. Peirson 1925-8-10 6375 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  SEINET10463950  Campanula californica Frank W. Peirson 1923-7-7 Peirson 3866 Mendocino Wet roadside on coast 1 miles north of Navarro River Comment
  CAS-BOT-BC179181  Hesperolinon micranthum Frank Warrington Peirson 1926-6-25 6858 Modoc Cedarville Road, about 10 mi. E of Alturas. Comment
  JEPS12115  Solanum triflorum Frank W. Peirson 1926-6-25 6878 Modoc Warner Mountains, Cedarville Road, 1 1/2 mi e of summit Cedarville Road; Warner Mountains, Cedarville Road Comment
  RSA65965  Eriogonum vimineum F. W. Peirson 1926-6-24 6856 Modoc near a small lake about 3 mi. east of Alturas. Comment
  RSA71945  Collomia tinctoria F. W. Peirson 1926-6-25 6892 Modoc 1 mile east of summit of Cedarville Road, Warner Mountains Comment
  RSA72211  Camissonia tanacetifolia subsp. tanacetifolia F. W. Peirson 1926-6-24 6857 Modoc Small lake about 3 miles east of Alturas. Comment
  RSA82265  Castilleja miniata F. W. Peirson 1926-6-25 6887 Modoc Small side canyon 1 mile east of summit of Warner Mountains on Cedarville Road. Comment
  SD87678  Hydrophyllum capitatum Frank W. Peirson 1926-6-25 6875 Modoc Warner MTs. Cedarville Rd. 1 mi E of summit. Comment
  CAS-BOT-BC15585  Antennaria geyeri Frank Warrington Peirson 1926-6-26 6909 Modoc NW of Canby. Comment
  RSA0011248  Vicia americana F. W. Peirson 1926-6-25 6890 Modoc Small side canyon 1 mile east of summit, Cedarville Road, Warner Mountains. 1829 Comment
  RSA76019  Nemophila pedunculata F. W. Peirson 1926-6-25 6896 Modoc Small side canyon 1 mile east of summit, Cedarville Road, Warner Mountains. 1829 Comment
  RSA91394  Trifolium cyathiferum F. W. Peirson 1926-6-25 6893 Modoc small side canyon 1 mile east of summit of Warner Mts., on Cedarville Road Comment
  RSA95000  Agoseris glauca var. dasycephala F. W. Peirson 1926-6-25 6884 Modoc Small side canyon 1 mile east of summit of Warner Mountains on Cedarville Road. Comment
  RSA97159  Lomatium dissectum var. multifidum F. W. Peirson 1926-6-25 6870 Modoc Warner Mountains, road to Cedarville, summit of grade Comment
  CAS-BOT-BC19698  Carex athrostachya Frank W. Peirson 1925-6-26 6103 Mono Shore of Silver Lake. 2194 Comment
  CAS-BOT-BC229053  Astragalus lemmonii Frank W. Peirson 1933-7-29 10744 Mono Hilton Creek, Owens River 2042 Comment
  CAS-BOT-BC256227  Eriogonum deflexum var. baratum Frank W. Peirson 1933-7-28 s.n. Mono Summit of Sherwin Hill 1950 Comment
  CAS-BOT-BC74814  Rorippa palustris var. palustris Frank W. Peirson 1933-7-28 10709 Mono Rock Creek. 1371 Comment
  CAS-BOT-BC88034  Thelypodium crispum Frank W. Peirson 1933-7-29 10722 Mono Canyon floor of Crooked Creek, Owens River. 2042 Comment
  JEPS19738  Sphaeromeria potentilloides var. nitrophila Frank W. Peirson 1938-7-8 12437 Mono along U.S. 395 near the Gorge; Hot Creek Region, Region of Fales Hot Springs 2194 Comment
  JEPS21419  Chrysothamnus viscidiflorus subsp. puberulus Frank W. Peirson 1934-7-16 11249 Mono slope e of the Lower Virginia Lake; Virginia Lakes Basin 2987 Comment
  JEPS22398  Atriplex pusilla Frank W. Peirson 1937-8-1 12154 Mono Long Valley , Long Valley (Hot Creek Region) 2103 Comment
  JEPS31551  Eremothera boothii subsp. boothii Frank W. Peirson 1933-7-31 Mono Mono Craters 2286 Comment
  JEPS46364  Swertia puberulenta Frank W. Peirson 1927-7-26 7560 Mono between Deadman Creek and June Lake 2407 Comment
  JEPS48928  Calyptridium roseum Frank W. Peirson 1938-7-8 12433 Mono Hot Creek Region; near the gorge 2194 Comment
  JEPS54696  Astragalus johannis-howellii Frank W. Peirson 1938-7-8 12435 Mono near the Gorge (Hot Creek Region); , near the Gorge 2194 Comment
  LA38951  Mimulus nanus var. mephiticus Frank W. Peirson; 1925-6-26 6095 Mono Volcanic Mountains between Deadman Creek and June Lake 2438 Comment
  POM203905  Silene bernardina F. W. Peirson 1934-7-14 11222 Mono East of Blue Lake, Virginia Lakes Basin. East slope of Sierra Nevada. 3018 Comment
  POM212913  Astragalus lentiginosus var. ineptus F. W. Peirson 1935-8-4 11648 Mono Sonora Pass Region, 1.5 miles S of Pass in small rocky canyon. 2744 Comment
  POM231946  Orthocarpus cuspidatus subsp. copelandii F. W. Peirson 1937-7-30 s.n. Mono Mill Creek (Lundy Canyon). 2470 Comment
  POM87023  Keckiella breviflora subsp. glabrisepala F. W. Peirson 1925-6-30 6164 Mono Walker River below Cris Flat. Comment
  POM87034  Eriogonum elatum var. elatum F. W. Peirson 1925-6-25 6055 Mono Rock Creek, volcanic tablelands. 2073 Comment
  POM87144  Valeriana capitata subsp. californica F. W. Peirson 1925-6-27 6111 Mono Gem Lake. 2774 Comment
  RSA100246  Valeriana capitata subsp. californica F. W. Peirson 1925-6-27 6111 Mono Trail on north side of Gem Lake, Sierra Nevada. 2774 Comment
  RSA65179  Eriogonum elatum var. elatum F. W. Peirson 1927-7-27 7571 Mono North end of Silver Lake. 2256 Comment
  RSA65837  Descurainia incana subsp. incisa F. W. Peirson 1925-6-27 6121 Mono West end of Gem Lake. Sierra Nevada. 2774 Comment
  RSA65850  Eriogonum microtheca var. ambiguum F. W. Peirson 1914-8-25 1748 Mono Northern part of volcanic tableland. Crooked Creek. 2043 Comment
  RSA66497  Arabis lemmonii F. W. Peirson 1934-7-11 11185 Mono Above Moat Lake, Virginia Lakes Basin, Sierra Nevada 3171 Comment
  RSA66763  Arabis divaricarpa F. W. Peirson 1932-7-23 10380 Mono East side of Sonora Pass. 2591 Comment
  RSA66825  Thelypodium crispum F. W. Peirson 1925-6-27 6112 Mono Gem Lake, east slope of Sierra Nevada. 2774 Comment
  RSA67115  Galium hypotrichium subsp. hypotrichium F. W. Peirson 1934-7-13 s.n. Mono Upper Virginia Lake Cirque Comment
  RSA67128  Galium multiflorum F. W. Peirson 1914-8-25 1187 Mono Northern part of volcanic tableland. Crooked Creek. 2043 Comment
  RSA69256  Kalmia polifolia subsp. microphylla F. W. Peirson 1934-7-12 11188 Mono Virginia Lakes, Sierra Nevada. 3201 Comment
  RSA69484  Luzula comosa F. W. Peirson 1937-7-30 12140 Mono Mill Creek (Lundy Canyon). 2470 Comment
  RSA69534  Maianthemum stellatum Frank W. Peirson 1935-8-4 11651 Mono Sonora Pass region 2622 Comment
  RSA71922  Loeseliastrum depressum F. W. Peirson 1938-7-10 12462 Mono Below the old Devernois Ranch, west slope of White Mountains. 1463 Comment
  RSA74800  Phacelia peirsoniana F. W. Peirson 1914-8-25 8208 Mono Volcanic Tableland, Crooked Creek, Owens Valley 2043 Comment
Read comments
May 21 2012
  RSA75361  Camissonia boothii subsp. desertorum F. W. Peirson 1938-7-10 12459 Mono Alluvial cone along west slope of White Mountains, directly below the old Devernois Ranch 1463 Comment
  RSA78519  Carex fissuricola F. W. Peirson 1937-7-30 13606 Mono Lundy. 2470 Comment
  RSA79761  Penstemon floridus subsp. floridus F. W. Peirson 1914-8-25 1114 Mono Crooked Creek, Owens River region. 2043 Comment
  RSA79762  Penstemon floridus subsp. floridus F. W. Peirson 1933-7-29 10730 Mono Along foot of walls of Crooked Creek Canyon, Owens River. 2043 Comment
  RSA79931  Cryptantha humilis F. W. Peirson 1934-7-11 11184 Mono East of Blue Lake, Virginia Lakes Basin, Sierra Nevada. 3018 Comment
  RSA80258  Orthocarpus luteus F. W. Peirson 1927-7-25 7551 Mono Convict Lake, Sierra Nevada. 2317 Comment
  RSA80834  Pedicularis crenulata F. W. Peirson 1927-7-25 6090 Mono Road crossing of Convict Creek, east base of Sierra Nevada 2149 Comment
  RSA82275  Castilleja lemmonii F. W. Peirson 1935-8-4 11658 Mono Along east slope of main range, ca. 1.5 miles east of Sonora Pass, Sierra Nevada. 2835 Comment
  RSA85222  Horkelia fusca subsp. parviflora F. W. Peirson 1927-7-29 7593 Mono Slate Creek, east slope of Sierra Nevada. 3018 Comment
  RSA85707  Potentilla diversifolia var. diversifolia F. W. Peirson 1927-7-29 7592 Mono Saddlebag Creek, Sierra Nevada. 3018 Comment
  RSA86622  Purshia tridentata var. tridentata F. W. Peirson 1925-6-27 6118 Mono W end of Gem Lake. Sierra Nevada. 2835 Comment
  RSA86629  Purshia tridentata var. tridentata F. W. Peirson 1925-6-25 6053 Mono Rock Creek 2073 Comment
  RSA88748  Carex heteroneura F. W. Peirson 1925-6-28 6135 Mono Reverse Creek. 2287 Comment
  RSA88764  Carex douglasii F. W. Peirson 1925-6-26 6104 Mono Silver Lake. 2195 Comment
  SBBG29162  Oxytheca dendroidea subsp. dendroidea F. W. Peirson 1925-6-25 6038 Mono grade up volcanic tableland [in 1925, "grade" = Rock Creek Road) Comment
Read comments
Feb 8 2013
  SBBG98317  Brickellia microphylla F. W. Peirson 1934-7-30 Mono Sherwin Hill, W of rd 1950 Comment
  SD87595  Lappula occidentalis Frank W. Peirson 1925-6-25 6048 Mono Rock Creek 2075 Comment
  SD87596  Sidalcea oregana subsp. spicata Frank W. Peirson 1925-6-26 6107 Mono Silver Lake, meadow north of lake. 2194 Comment
  SD87689  Mentzelia torreyi Frank W. Peirson 1930-8-12 9200 Mono Mono Lake. Black pumice hill on north shore of lake. 1965 Comment
  SD87708  Collinsia parviflora Frank W. Peirson 1925-6-28 6136 Mono Reverse Creek, Silver Lake Region, wet stream banks 2225 Comment
  SD87819  Purshia tridentata Frank W. Peirson 1925-6-27 6118 Mono Gem Lake, west end of Lake in forest 2774 Comment
  SD87858  Nemophila spatulata Frank W. Peirson 1925-6-28 6137 Mono Reverse Creek 2286 Comment
  UC501567  Bromus carinatus var. carinatus Frank W. Peirson 1932-7-22 10358 Mono below Barney Lake (along Robinson Creek, Twin Lake Basin (from Bridgeport)); Twin Lake Basin, Robinson Creek 2438 Comment
  UC511873  Eriogonum deflexum var. baratum Frank W. Peirson 1933-7-28 10714 Mono summit Sherwin Hill Sherwin Hill 1950 Comment
  UC595138  Sphaeromeria potentilloides var. nitrophila Frank W. Peirson 1938-7-8 12437 Mono near the Gorge (Hot Creek Region); Hot Creek Region 2194 Comment
  UC599189  Eriogonum hookeri Frank W. Peirson 1938-7-10 12465 Mono 18 mi s Benton Station 1371 Comment
  UC599218  Amsinckia tessellata var. tessellata Frank W. Peirson 1938-7-10 12454 Mono w slope of White Mountains (directly below the Devernois Ranch) 1463 Comment
  UC599225  Mimulus nanus var. mephiticus Frank W. Peirson 1938-7-9 12445 Mono e base Mono Craters 2133 Comment
  UC599261  Ipomopsis depressa Frank W. Peirson 1938-7-10 12462 Mono directly below the Devernois Ranch White Mtns 1432 Comment
  UCR136637  Castilleja linariifolia F. W. Peirson 1925-6-26 6099 Mono Sierra Nevada Mtns., Silver Lake 2195 Comment
  CAS-BOT-BC13297  Agoseris parviflora Frank W. Peirson 1925-6-26 6096 Mono North of Deadman Creek 2438 Comment
  CAS-BOT-BC13298  Agoseris parviflora Frank W. Peirson 1925-6-26 6096 Mono North of Deadman Creek (near Mammoth) 2438 Comment
  CAS-BOT-BC241642  Eriogonum baileyi var. baileyi F. W. Peirson 1914-8-26 s.n. Mono Volcanic Tableland 1981 Comment
  CAS-BOT-BC362274  Pyrrocoma lanceolata var. lanceolata F. W. Peirson 1933-7-29 10749 Mono Along the river road south of Whisky Creek and on river flats, Owens River 2042 Comment
  JEPS3070  Antirrhinum kingii Frank W. Peirson 1938-7-8 12425 Mono Sherwin Grade 1889 Comment
  JEPS57996  Oxytheca dendroidea subsp. dendroidea Frank W. Peirson c. 1918 Mono 30 to 35 mi n Bishop (Crooked Creek which flows into Owens River); Owen River, Crooked Creek Comment
  PASA2726  Astragalus gibbsii Frank W. Peirson 1925-6-29 6153 Mono Mono Lake to Bridgeport Comment
  POM203742  Oxytheca dendroidea F. W. Peirson 1934-7-8 s.n. Mono At foot of Whisky Creek, Owens River. 2043 Comment
  POM359538  Pyrrocoma lanceolata F. W. Peirson 1933-7-29 10748 Mono Along the river road at the foot of Whisky Creek, Owens River. 2043 Comment
  RSA0004930  Eriogonum ampullaceum F. W. Peirson 1933-7-29 10740 Mono Dry hill slopes about Whiskey Creek, Owens River. 2043 Comment
  RSA0010939  Castilleja minor subsp. minor F. W. Peirson 1927-7-28 7576 Mono Near Mono Lake. At Mono Inn. 1959 Comment
  RSA0011819  Shepherdia argentea F. W. Peirson 1925-6-29 6159 Mono 4 miles south of Bridgeport Comment
  RSA0125170  Eriastrum wilcoxii F. W. Peirson 1933-7-31 10755 Mono Mono Craters. 2287 Comment
  RSA64890  Oxytheca dendroidea F. W. Peirson 1933-7-29 10732 Mono Along Hilton Creek, Owens River. 2043 Comment
  RSA65204  Eriogonum elatum var. elatum F. W. Peirson 1914-8-25 1754 Mono Along old road south from Mammoth, above Crooked Creek Comment
  RSA65828  Descurainia californica F. W. Peirson 1934-7-16 11316 Mono About shores of Blue Lake, Virginia Lake Basin. 3018 Comment
  RSA65910  Eriogonum nidularium F. W. Peirson 1925-6-25 6039 Mono Grade up Volcanic Tableland (Sherwin Grade) Comment
  RSA65999  Eriogonum brachyanthum F. W. Peirson 1925-6-25 6040 Mono Grade up Volcanic Tableland 1677 Comment
  RSA66829  Thelypodium crispum F. W. Peirson 1914-8-25 1915 Mono Crooked Creek 2043 Comment
  RSA69556  Mentzelia nitens F. W. Peirson 1938-7-9 12451 Mono 1.5 miles southwest of Benton 1921 Comment
  RSA69589  Triglochin maritima F. W. Peirson 1925-6-28 6141 Mono Reverse Creek, Sierra Nevada. 2287 Comment
  RSA69702  Mentzelia congesta F. W. Peirson 1934-7-16 11248 Mono Virginia Lakes Basin. 2988 Comment
  RSA70078  Platanthera leucostachys Frank W. Peirson 1934-7-16 11234 Mono Just above the gorge above Blue Lake, Virginia Lakes Basin. 3034 Comment
  RSA70265  Juncus macrandrus F. W. Peirson 1930-8-12 9183 Mono Mono Lake, back of lake shore 1966 Comment
  RSA70595  Iris missouriensis Frank W. Peirson 1910-7-20 1691 Mono Meadows north of Silver Lake, Sierra Nevada 2195 Comment
  RSA72045  Phlox stansburyi F. W. Peirson 1927-7-26 7564 Mono East side of Gull Lake 2317 Comment
  RSA72254  Camissonia claviformis subsp. lancifolia F. W. Peirson 1938-7-9 12452 Mono 1.5 miles southwest of Benton 1921 Comment
  RSA74483  Phacelia humilis var. humilis F. W. Peirson 1935-8-4 11661 Mono Sonora Pass Region. 2622 Comment
  RSA74492  Phacelia humilis var. humilis F. W. Peirson 1925-6-29 6152 Mono North slope of grade north of Mono Lake. 2287 Comment
  RSA75341  Phacelia bicolor F. W. Peirson 1925-6-25 6068 Mono Rock Creek. 2073 Comment
  RSA75362  Camissonia boothii subsp. boothii F. W. Peirson 1938-7-9 12449 Mono 1.5 miles southeast of Benton. 1921 Comment
  RSA77054  Hydrophyllum occidentale F. W. Peirson 1932-7-23 10390 Mono East slope of Sonora Pass, Sierra Nevada. 2622 Comment
  RSA79804  Penstemon newberryi subsp. newberryi F. W. Peirson 1925-6-27 6129 Mono Rush Creek. 2363 Comment
  RSA80372  Solanum umbelliferum F. W. Peirson 1932-7-22 10369 Mono Steep slope below Barney Lake, along Robinson Creek, Twin Lake Basin. 2378 Comment
  RSA80722  Mimulus pilosus F. W. Peirson 1938-7-9 12444 Mono Along east base of Mono Craters. 2134 Comment
  RSA80799  Pedicularis groenlandica subsp. surrecta F. W. Peirson 1935-7-18 11527 Mono Mono County: wet places at old Saw Mill Camp, Slate Creek. 3018 Comment
  RSA85754  Potentilla flabellifolia F. W. Peirson 1934-7-15 11230 Mono Along the Red Lake Stream, Virginia Lakes Basin. 3171 Comment
  RSA88774  Carex exserta F. W. Peirson 1935-7-18 11706 Mono Just below the Carnegie Alpine Laboratory, Slate Creek. 3049 Comment
  RSA90191  Astragalus casei F. W. Peirson 1930-8-12 9188 Mono Just back of willows on shore of Mono Lake. 1966 Comment
  RSA90208  Bromus marginatus F. W. Peirson 1932-7-22 10358 Mono Robinson Creek along the steep slope below Barney Lake, Twin Lakes Basin 2439 Comment
  RSA90257  Astragalus lentiginosus var. ineptus F. W. Peirson 1933-7-31 10758 Mono North shore Mono Lake. 1966 Comment
  RSA90731  Astragalus canadensis var. brevidens F. W. Peirson 1932-7-22 10360 Mono Lower end of the Upper Lake, Twin Lakes Basin. 2165 Comment
  RSA90732  Astragalus canadensis var. brevidens F. W. Peirson 1930-8-12 9197 Mono North shore of Mono Lake 1966 Comment
  RSA90999  Erigeron petiolaris F. W. Peirson 1934-7-16 11244 Mono Open south shore of Blue Lake, Virginia Lakes Basin. 3018 Comment
  RSA91044  Carex phaeocephala F. W. Peirson 1935-8-4 11730 Mono Along east slope of main range of the Sierras about 1.5 miles south of Pass. Comment
  RSA91181  Lupinus caudatus F. W. Peirson 1933-7-29 10751 Mono Along road from the boulevard (Highway 395) to Owens River. 2043 Comment
  RSA91644  Carex vernacula F. W. Peirson 1934-7-15 11228 Mono Along Red Lake stream, Virginia Lakes Basin. 3171 Comment
  RSA92133  Eleocharis palustris F. W. Peirson 1925-6-25 6083 Mono [Lower] Rock Creek, Sierra Nevada 2073 Comment
  RSA92393  Eriophyllum pringlei F. W. Peirson 1938-7-9 12450 Mono 1.5 miles southeast of Benton 1921 Comment
  RSA93110  Erigeron aphanactis var. aphanactis F. W. Peirson 1937-8-1 12163 Mono Long Valley, Hot Creek region. 2104 Comment
  RSA93432  Brickellia oblongifolia var. linifolia F. W. Peirson 1927-7-25 7554 Mono Convict Lake, east base of Sierra Nevada 2317 Comment
  RSA93439  Brickellia microphylla F. W. Peirson 1933-8-23 10852 Mono Summit of Sherwin Hill, north of Bishop 1951 Comment
  RSA93635  Antennaria rosea F. W. Peirson 1934-7-16 s.n. Mono Open spaces at west end of Blue Lake, Virginia Lakes Basin, east slope of Sierra Nevada 3018 Comment
  RSA93858  Chrysothamnus parryi subsp. asper F. W. Peirson 1930-8-11 9177 Mono Volcanic mountains north of Deadman Creek. 2439 Comment
  RSA93910  Iva nevadensis F. W. Peirson 1938-7-10 12463 Mono Below the Devernois Ranch, W slope of White Mts. 1433 Comment
  RSA93959  Pyrrocoma uniflora var. uniflora F. W. Peirson 1914-8-25 1241 Mono Crooked Creek, Northern part of Volcanic Tableland Comment
  RSA93971  Pyrrocoma racemosa var. paniculata F. W. Peirson 1933-7-29 10748 Mono River road at foot of Whisky Creek, Owens River. Comment
  RSA93972  Pyrrocoma racemosa var. paniculata F. W. Peirson 1937-8-1 12162 Mono In Long Valley, Hot Creek Region. 2104 Comment
  RSA94700  Senecio werneriifolius F. W. Peirson 1934-7-11 11180 Mono Above Moat Lake, Virginia Lakes Basin, Sierra Nevada. 3171 Comment
  RSA97335  Pastinaca sativa F. W. Peirson 1930-8-12 9184 Mono Mono Lake 1966 Comment
  RSA98356  Berula erecta F. W. Peirson 1930-8-12 9185 Mono Mono Lake, back of lake shore 1966 Comment
  SD87620  Erigeron algidus Frank W. Peirson 1934-7-16 11244 Mono Virginia Lakes Basin 3020 Comment
  SEINET7564771 Image available Carex leporinella Frank W. Peirson 1934-7-15 11227 Mono Virginia Lakes Basin. 3200 Comment
  UC1026445  Carex utriculata Frank W. Peirson 1937-7-31 13605 Mono Lundy 2468 Comment
  UC511804  Chrysothamnus viscidiflorus subsp. puberulus Frank W. Peirson 1933-8-1 Mono n shore Mono Lake 1965 Comment
  UC511877  Cleomella parviflora Frank W. Peirson 1933-7-29 10731 Mono Owens River 2042 Comment
  UC511902  Eriogonum baileyi var. baileyi Frank W. Peirson 1933-7-29 10747 Mono along road from the Boulevard to the Owens River Owens River 2042 Comment
  UC555589  Trifolium andersonii var. beatleyae Frank W. Peirson 1925-6-29 6154 Mono about 1/2 way Mono Lake to Bridgeport Comment
  UC570539  Collinsia parviflora Frank W. Peirson 1935-7-18 Mono Slate Creek, Auto Camp, near the site of the old saw mill Slate Creek; , Auto Camp 3017 Comment
  UC599242  Hesperostipa comata Frank W. Peirson 1938-7-8 12432 Mono between Owens River and the Boulevard; vicinity of Whisky Creek 2072 Comment
  UC635275  Taraxia tanacetifolia Frank W. Peirson 1925-6-29 6150 Mono summit of grade n Mono Lake Comment
  UC638460  Ivesia saxosa Frank W. Peirson 1934-7-8 Mono Summit of Sherwin Hill 1950 Comment
  CAS-BOT-BC64554  Armeria maritima subsp. californica Frank W. Peirson 1923-6-27 3804 Monterey Monterey. Comment
  RSA65195  Chorizanthe diffusa F. W. Peirson 1923-6-26 8665 Monterey About 3 miles from Monterey on road to Salinas. Comment
  RSA69234  Gaultheria shallon F. W. Peirson 1912-6-27 845 Monterey Above 17 Mile Drive, Monterey Peninsula. Comment
  RSA85044  Polystichum dudleyi F. W. Peirson 1937-7-19 12091 Monterey Big Sur River 305 Comment
  SBBG28972  Eryngium armatum F. W. Peirson 1912-1 2094 Monterey coast, Monterey Comment
  CAS-BOT-BC367561  Lasthenia minor Frank W. Peirson 1923-6-27 3916 Monterey Notrey's Landing, Coast, south of Carmel Comment
  JEPS16588  Heuchera micrantha var. diversifolia Frank W. Peirson 1937-7-19 12096 Monterey Pine Ridge trail from public camp grounds Big Sur River 304 Comment
  PASA1690  Lessingia glandulifera var. pectinata Frank W. Peirson 1923-6-26 Monterey Auto Camp 3 miles from Monterey on the Salinas Road Comment
  PASA2216  Eriophyllum staechadifolium Frank W. Peirson 1923-6-27 Monterey Coast south of Pacific Grove [sea level] Comment
  PASA681  Oxalis oregana Frank W. Peirson 1923-6-7 Monterey Foot of Redwood Creek near Motry's Landing Comment
  POM93748  Artemisia pycnocephala F. W. Peirson 1903-07 1453 Monterey Monterey. Comment
  RSA0097829  Spergularia macrotheca F. W. Peirson 1912-1 1868 Monterey Probably coast of Monterey Co. Comment
  RSA70370  Calochortus luteus Frank W. Peirson 1923-6-28 3683 Monterey Monterey to Salinas Comment
  RSA74917  Phacelia imbricata subsp. imbricata F. W. Peirson 1937-7-19 12093 Monterey Trail up Big Sur River. 305 Comment
  RSA82587  Stachys ajugoides F. W. Peirson 1923-6-26 3831 Monterey About 3 miles from Monterey on road to Salinas. Comment
  RSA91324  Lupinus arboreus var. arboreus F. W. Peirson 1912-7-27 528 Monterey Monterey. Comment
  RSA93388B  Symphoricarpos mollis F. W. Peirson 1923-6-27 3864 Monterey Redwood Creek at Notrey's [Notley's] Landing. Comment
  CAS-BOT-BC432274  Lithophragma affine Frank W. Peirson 1925-4-11 5734 Orange Silverado Canyon, Santa Ana Mts. 609 Comment
  JEPS17473  Hydrocotyle umbellata F. W. Peirson 1924-10-19 5237 Orange Wintersberg Comment
  JEPS50477  Viola sheltonii Frank W. Peirson 1923-5-6 3496 Orange along trail from Trabuco Canyon (Santiago Peak); Santiago Peak 1676 Comment
  JEPS59787  Cycloloma atriplicifolium Frank W. Peirson 1924-8-29 5061 Orange at bridge near Santa Ana; Santa Ana River Comment
  POM19056  Styrax redivivus F. W. Peirson 1923-5-5 3493 Orange Trabuco Canyon. 640 Comment
  POM47660  Galium porrigens F. W. Peirson 1924-5-31 4665 Orange 5 miles southeast of Laguna Beach Comment
  RSA65401  Atriplex californica F. W. Peirson 1923-3-25 3414 Orange Aliso Creek, near Laguna Beach. Comment
  RSA66150  Lepidium lasiocarpum F. W. Peirson 1923-3-25 3363 Orange Aliso Creek near Laguna Beach Comment
  RSA66773  Cleome isomeris F. W. Peirson 1919-11-8 1922 Orange South of Arch Beach, near Laguna Beach Comment
  RSA70019  Suaeda esteroa F. W. Peirson 1924-2-10 4535 Orange Balboa Beach, mainland near bridge Comment
  RSA70036  Salicornia virginica F. W. Peirson 1924-8-29 5069 Orange roadside 4 miles south of Santa Ana. Comment
  RSA71016  Cressa truxillensis F. W. Peirson 1924-5-31 4647 Orange Laguna Canyon, near Laguna Beach. 106 Comment
  RSA72264  Camissonia cheiranthifolia subsp. suffruticosa F. W. Peirson 1921-1-9 2351 Orange At sea level, Balboa. 0 Comment
  RSA74935  Phacelia davidsonii F. W. Peirson 1923-5-6 3499 Orange Summit of Santiago Peak. 1677 Comment
  RSA75799  Pholistoma auritum F. W. Peirson 1923-3-25 4481 Orange Aliso Creek, near Laguna Beach. Comment
  RSA77337  Ceanothus tomentosus F. W. Peirson 1922-5-19 3050 Orange small canyon heading eastward from the Santa Ana River Canyon 122 Comment
  RSA77736  Viola sheltonii F. W. Peirson 1923-5-6 3496 Orange Good colony in deep soil, in shade long trail from Trabuco Canyon, Santiago Peak. 1677 Comment
  RSA80318  Lycium californicum F. W. Peirson 1919-11-8 1085 Orange South of Arch Beach, near Laguna Beach Comment
  RSA80386  Solanum umbelliferum F. W. Peirson 1925-4-10 5737 Orange In Silverado Canyon. 610 Comment
  RSA80683  Oligomeris linifolia F. W. Peirson 1925-4-11 5744 Orange 5 miles southeast of Laguna Beach. Comment
  RSA80823  Frankenia grandifolia var. campestris F. W. Peirson 1924-5-31 4659 Orange Laguna Canyon near Laguna Beach 91 Comment
  RSA84993  Adiantum jordanii F. W. Peirson 1924-5-31 4666 Orange 5 miles SE of Laguna Beach. Comment
  RSA87135  Leptochloa fusca subsp. uninervia F. W. Peirson 1924-8-29 5062 Orange Santa Ana. Comment
  RSA88648  Carex barbarae F. W. Peirson 1924-2-9 4524 Orange Between Wintersberg and the sea. Comment
  SD70409  Viola sheltonii Frank W. Peirson 1923-5-6 3496 Orange along trail from Trabuco Canyon. Santiago Peak 1676 Comment
  SD82797  Ceanothus papillosus var. roweanus F. W. Peirson 1923-5-6 3492 Orange Trail from Trabuco Canyon to Santiago Peak, Santa Ana Mountains (in Holy Jim Canyon) 990 Comment
  SD87558  Camissoniopsis cheiranthifolia subsp. suffruticosa F. W. Peirson 1924-5-31 4670 Orange 5.0 miles south of Laguna; on sea bluffs. Comment
  SD87597  Symphyotrichum lanceolatum subsp. hesperium F. W. Peirson 1924-10-19 5241 Orange Wintersberg Comment
  CAS-BOT-BC426240  Jepsonia parryi F. W. Peirson 1919-11-8 1941 Orange Sea bluffs south of Arch Beach, near Laguna Beach Comment
  RSA0002591  Apium graveolens var. graveolens F. W. Peirson 1924-5-31 4656 Orange Open Canyon, Laguna Beach. 91 Comment
  RSA0075818  Heterotheca grandiflora F. W. Peirson 1920-1-9 2350 Orange Sand near the point at Balboa Beach. Comment
  RSA0097838  Spergularia macrotheca F. W. Peirson 1923-3-26 4289 Orange Canada Salada. 0 Comment
  RSA69001  Samolus parviflorus F. W. Peirson 1924-10-19 s.n. Orange Wintersberg Comment
  RSA72203  Camissonia bistorta F. W. Peirson 1923-3-26 3411 Orange Canada Salada Creek, field about 1/4 mile from beach Comment
  RSA85790  Potentilla anserina var. grandis F. W. Peirson 1924-10-19 5235 Orange Wintersberg Comment
  RSA92427  Helianthus gracilentus F. W. Peirson 1923-5-5 4147 Orange Trabuco Canyon, Santa Ana Mts. 549 Comment
  RSA92493  Helianthus nuttallii subsp. parishii F. W. Peirson 1924-10-19 5246 Orange Wintersberg. Comment
  RSA93807  Aster subulatus var. ligulatus F. W. Peirson 1919-11-8 1278 Orange Aliso Creek. 0 Comment
  SD87778  Bolboschoenus maritimus subsp. paludosus F. W. Peirson 1925-4-12 5749 Orange Laguna Canyon. 106 Comment
  CAS-BOT-BC228465  Plagiobothrys mollis Frank W. Peirson 1926-6-21 6803 Plumas Open strip of land between forest and lake on the N shore, Lake Almanor 1447 Comment
  PASA154  Orthocarpus lacerus Frank W. Peirson 1926-6-21 Plumas East slope Sierra Nevada on the Humbolt Rd. Comment
  PASA1947  Mertensia stomatechoides Frank W. Peirson 1926-6-21 Plumas East slope Sierra Nevada on the Humbolt Road. Comment
  RSA74857  Phacelia mutabilis F. W. Peirson 1926-6-22 6813 Plumas Trail from Drakesbad to Devil s Kitchen, Lassen National Park. 1738 Comment
  RSA77583  Mertensia ciliata var. stomatechoides F. W. Peirson 1926-6-21 6782 Plumas East slope of Sierra Nevada, Humboldt Road. Comment
  RSA80102  Mimulus torreyi F. W. Peirson 1926-6-21 6800 Plumas Flat strip along shore of Lake Almanor (north shore). Comment
  RSA95140  Crepis monticola F. W. Peirson 1926-6-22 6829 Plumas Drakesbad, Lassen National Park. 1677 Comment
  SD87611  Erythranthe pulsiferae Frank W. Peirson 1926-6-21 6801 Plumas South shore Lake Almanor, flat land along lake, mostly shade Comment
  CAS-BOT-BC227049  Leptosiphon floribundus subsp. glaber Frank W. Peirson 1922-4-28 946 Riverside Leach Canon [Canyon], Elsinore Region Comment
  CAS-BOT-BC231785  Chilopsis linearis Frank W. Peirson 1921-4-13 1173 Riverside Foot of Deep Canyon 304 Comment
  CAS-BOT-BC268189  Eriogonum umbellatum var. munzii Frank W. Peirson 1924-7-28 5014 Riverside Pine Flats Camp, San Jacinto Mts. 1798 Comment
  CAS-BOT-BC30905  Acamptopappus sphaerocephalus Frank W. Peirson 1927-4-11 7154 Riverside Colorado Desert, 0.5 mile below Whitewater Bridge Comment
  CAS-BOT-BC342257  Logfia filaginoides F. W. Peirson 1921-3-22 5277 Riverside Murray Canyon near Palm Springs 487 Comment
  CAS-BOT-BC381978  Uropappus lindleyi F. W. Peirson 1921-3-22 2381 Riverside Murray Canyon at east base of Mt. San Jacinto 457 Comment
  CAS-BOT-BC432279  Lithophragma affine Frank W. Peirson 1922-5-19 4189 Riverside San Jacinto River 1143 Comment
  CAS-BOT-BC60106  Lepidium virginicum var. menziesii Frank W. Peirson 1922-5-21 3031 Riverside San Jacinto Mountains. Hemet Valley. 1356 Comment
  JEPS49608  Philadelphus microphyllus var. stramineus Frank W. Peirson 1924-7-27 4991 Riverside Dark Canyon, Mt. San Jacinto. 2286 Comment
  JEPS54817  Astragalus pachypus var. jaegeri Frank W. Peirson 1928-3-24 Riverside Temecula River Road s Dripping Spring; Temecula River Road s of Dripping Spring 457 Comment
  PASA127  Mimulus latidens Frank W. Peirson 1922-5-19 Riverside Menifee Valley 426 Comment
  PASA1350  Peucephyllum schottii Frank W. Peirson 1930-5-29 Riverside Painted Canyon Comment
  PASA1957  Pectocarya setosa Frank W. Peirson 1921-3-21 Riverside Gordon Trail, east slope San Jacinto Mt. 1066 Comment
  PASA2160  Brickellia arguta Frank W. Peirson 1919-4-13 Riverside Along the Tahquitz stream, east of Palm Springs 152 Comment
  PASA2170  Hofmeisteria pluriseta Frank W. Peirson 1927-4-12 Riverside Painted Canyon Comment
  PASA303  Downingia immaculata Frank W. Peirson 1922-4-29 Riverside Field south of Lake Elsinore 380 Comment
  PASA330  Microseris douglasii Frank W. Peirson 1922-4-30 Riverside 1 mile west of Lakeview 426 Comment
  PASA508  Brodiaea synandra Frank W. Peirson 1922-5-19 Riverside 2 miles southeast of Perris Comment
  PASA628  Juncus bufonius Frank W. Peirson 1922-4-29 Riverside South side Lake Elsinore Comment
  POM317055  Lupinus bicolor subsp. microphyllus F. W. Peirson 1922-4-29 5224 Riverside South of Lake Elsinore. 381 Comment
  POM47633  Lotus argophyllus subsp. decorus F. W. Peirson 1919-4-13 s.n. Riverside Murray Canyon, Palm Springs region. Comment
  POM48345  Tidestromia oblongifolia F. W. Peirson 1924-12-30 5416 Riverside Thousand-Palms Canyon 122 Comment
  RSA357376  Orcuttia californica F. W. Peirson 1922-5-19 3028 Riverside Menifee Valley Comment
  RSA462211  Dodecatheon redolens F. W. Peirson 1924-7-27 4999 Riverside Deer Springs, San Jacinto Mountains. Comment
  RSA498671  Horkelia clevelandii F. W. Peirson 1924-7-28 5006 Riverside Pine Flats Camp 1799 Comment
  RSA64581  Eriogonum reniforme F. W. Peirson 1928-4-24 7911 Riverside Cottonwood Springs, northern Colorado Desert Comment
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Oct 9 2010
  RSA64582  Eriogonum pusillum F. W. Peirson 1933-4-13 10642 Riverside Deep Canyon to Idyllwild, Santa Rosa Mountains 1372 Comment
  RSA65172  Chorizanthe fimbriata var. fimbriata F. W. Peirson 1920-6-22 2165 Riverside Dripping Spring southeast of Temecula 457 Comment
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Nov 4 2014
  RSA65230  Eriogonum apiculatum F. W. Peirson 1924-7-29 5026 Riverside Open Mountain slope on road from Banning to Idyllwild, San Jacinto Mountains. 1677 Comment
  RSA65277  Chorizanthe xanti var. leucotheca F. W. Peirson 1914-04 1776 Riverside Whitewater, west end of Coachella Valley. Comment
  RSA65309  Eriogonum thurberi F. W. Peirson 1922-5-19 4204 Riverside 5 miles northeast of Murrieta. Comment
  RSA65413  Cistanthe monandra F. W. Peirson 1921-4-13 4317 Riverside Foot of Deep Canyon, Coachella Valley 274 Comment
  RSA65417  Cistanthe monandra F. W. Peirson 1924-7-29 5028 Riverside Banning to Idyllwild road, San Jacinto Mountains. 1570 Comment
  RSA65716  Loeflingia squarrosa F. W. Peirson 1922-4-9 4156 Riverside Palm Canyon Region, near Palm Springs. Comment
  RSA65992  Eriogonum umbellatum subsp. munzii F. W. Peirson 1924-7-28 5014 Riverside Pine Flats Camp 1799 Comment
  RSA66743  Eschscholzia minutiflora F. W. Peirson 1914-04 1886 Riverside Whitewater, Nw corner of Colorado Desert, River Co. Comment
  RSA66747  Eschscholzia minutiflora F. W. Peirson 1921-3-20 4175 Riverside Andreas Canyon near Palm Springs 213 Comment
  RSA66785  Thysanocarpus laciniatus F. W. Peirson 1921-3-22 4187 Riverside Murray Canyon, Near Palm Springs. 366 Comment
  RSA68632  Calochortus splendens Frank W. Peirson 1924-7-27 4997 Riverside Deer Springs, San Jacinto Mountains. Comment
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May 26 2014
  RSA69581  Mentzelia involucrata var. megalantha F. W. Peirson 1933-4-15 10652 Riverside Whitewater River, 4.5 miles above the bridge. 701 Comment
  RSA69582  Mentzelia involucrata F. W. Peirson 1922-4-9 753 Riverside Palm Canyon stream near Alkali Canyon, Riverside County Comment
  RSA69609  Boerhavia coccinea F. W. Peirson 1916-04 1848 Riverside Near Palm Springs. Comment
  RSA69914  Asclepias subulata F. W. Peirson 1920-12-29 2339 Riverside Point of Rocks, 1.5 miles east of Whitewater Station, head of Coachella Valley 335 Comment
  RSA70003  Tidestromia oblongifolia F. W. Peirson 1937-11-27 12319 Riverside La Quinta, Coachella Valley. At sea-level. 0 Comment
  RSA70007  Tidestromia oblongifolia F. W. Peirson 1928-11-30 8211 Riverside Foot canyon below Shavers Well, NE of Mecca. Comment
  RSA70054  Juncus rugulosus F. W. Peirson 1924-7-28 5010 Riverside Pine Flats Camp 1799 Comment
  RSA70127  Brodiaea filifolia F. W. Peirson 1922-5-19 3070 Riverside 2 miles southeast of Perris Comment
  RSA70166  Brodiaea filifolia F. W. Peirson 1930-5-10 8772 Riverside 1 mile east of Perris 457 Comment
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Nov 15 2007
  RSA70189  Allium parishii F. W. Peirson 1928-4-25 7918 Riverside Western edge of broken country northwest of Cottonwood Springs, southern Mojave Desert. Comment
  RSA70222  Allium haematochiton F. W. Peirson 1921-3-19 2394 Riverside 4 miles west of Beaumont, on road to Redlands. Comment
  RSA70350  Funastrum hirtellum F. W. Peirson 1922-4-9 4118 Riverside Palm Canyon Region, near Palm Springs. Comment
  RSA70433  Bernardia incana F. W. Peirson 1928-4-25 7917 Riverside Cottonwood Spring Region, Northern Colorado Desert. Comment
  RSA70555  Croton californicus F. W. Peirson 1932-11-26 9661 Riverside Thousand Palms. 122 Comment
  RSA70996  Cuscuta californica F. W. Peirson 1914-04 898 Riverside Whitewater at head of Coachella Valley. Comment
  RSA71929  Aliciella latifolia F. W. Peirson 1922-4-11 2871 Riverside Deep Canyon Region, north base of Santa Rosa Mountains Comment
  RSA74795  Phacelia pedicellata F. W. Peirson 1920-2-16 970 Riverside Palm Canyon Stream, Near foot of Alkali Canyon east of Palm Canyon, Riverside County. Comment
  RSA75369  Camissonia brevipes subsp. brevipes F. W. Peirson 1928-7-10 7706 Riverside Colorado Desert. Foot of rock wall of canyon at Hidden Spring, northeast of Mecca. Comment
  RSA75371  Camissonia brevipes subsp. brevipes F. W. Peirson 1930-3-29 8686 Riverside Colorado Desert. Painted Canyon, near Mecca. Comment
  RSA75503  Phacelia brachyloba F. W. Peirson 1924-7-29 5021 Riverside Road between Banning and Idyllwild. 1768 Comment
  RSA75520  Tricardia watsonii F. W. Peirson 1914-04 1715 Riverside Whitewater at head of Coachella Valley. Comment
  RSA75687  Camissonia refracta F. W. Peirson 1926-1-31 6492 Riverside Dos Palmas [Spring], Colorado Desert. Comment
  RSA75988  Eucrypta chrysanthemifolia var. bipinnatifida F. W. Peirson 1919-4-13 972 Riverside Tahquitz Canyon, near Palm Springs. Comment
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Sep 18 2011
  RSA766144  Eriogonum thomasii F. W. Peirson 1930-3-29 1897 Riverside Painted Canyon Comment
  RSA76953  Tetracoccus hallii F. W. Peirson 1928-4-24 7894 Riverside Cottonwood Springs, northern Colorado Desert Comment
  RSA76957  Stillingia linearifolia F. W. Peirson 1921-4-12 5311 Riverside Foot of Palm canyon. Comment
  RSA76967  Ziziphus parryi F. W. Peirson 1921-3-21 2370 Riverside Gordon Trail from Andreas Canyon, east base of the San Jacinto Mtns. 1067 Comment
  RSA77146  Ceanothus greggii var. perplexans F. W. Peirson 1918-03 728 Riverside Jack Rabbit Grade, from Moreno to Beaumont Comment
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Mar 20 2011
  RSA77415  Brandegea bigelovii F. W. Peirson 1927-4-12 7166 Riverside In Painted Canyon near Mecca. Comment
  RSA77817  Pectocarya setosa F. W. Peirson 1921-3-21 4059 Riverside Gordon Trail from Andreas Canyon, east base of the San Jacinto Mtns. 1067 Comment
  RSA80248  Mohavea confertiflora F. W. Peirson 1917-4-1 1102 Riverside Along south edge of Colorado Desert embayment east of Palm Springs, above ''Garden of Eden'. Comment
  RSA80472  Mimulus latidens F. W. Peirson 1922-5-19 3043 Riverside Menifee Valley (South of Perris) 427 Comment
  RSA82229  Castilleja affinis F. W. Peirson 1929-5-4 8338 Riverside Mostly about bushes on low hill about 2 miles south of summit of St. Johns Grade south of Hemet. 701 Comment
  RSA82521  Limosella acaulis F. W. Peirson 1922-5-20 3054 Riverside Hemet Valley. (San Jacinto Mountains) 1341 Comment
  RSA83383  Dudleya saxosa subsp. aloides F. W. Peirson 1928-4-24 7895 Riverside Below Cottonwood Spring, northern edge of Colorado Desert. Comment
  RSA84261  Azolla filiculoides Frank W. Peirson 1922-4-30 2948 Riverside Lancaster Valley, less than 2 miles from the Temecula River on the road to Hemet. 518 Comment
  RSA84468  Clematis pauciflora F. W. Peirson 1921-3-22 s.n. Riverside Murray Canyon, near Palm Springs 427 Comment
  RSA85074  Crossosoma bigelovii F. W. Peirson 1933-4-15 10653 Riverside Whitewater River E of Cabezon, 4.5 mi. up stream from Hwy. 701 Comment
  RSA85545  Cheilanthes viscida F. W. Peirson 1921-3-22 2371 Riverside Murray Canyon, south side in canyon 457 Comment
  RSA85555  Cheilanthes covillei F. W. Peirson 1921-3-22 2331 Riverside Murray Canyon near Palm Springs. 488 Comment
  RSA85835  Marsilea vestita F. W. Peirson 1930-5-10 8768 Riverside along the boulevard opposite March Field, south of Riverside 457 Comment
  RSA85934  Selaginella bigelovii Frank W. Peirson 1920-2-15 1530 Riverside Murray Canyon near Palm Springs Comment
  RSA85943  Selaginella eremophila Frank W. Peirson 1920-12-28 s.n. Riverside Murray Canyon, near Palm Springs 304 Comment
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May 4 2007
  RSA86207  Notholaena californica subsp. leucophylla F. W. Peirson 1921-3-20 1503 Riverside Andreas Canyon, near Palm Springs. 243 Comment
  RSA86362  Pinus quadrifolia F. W. Peirson 1922-5-20 3059 Riverside Hemet Valley, San Jacinto Mts. 1494 Comment
  RSA86722  Aristida adscensionis var. abortiva F. W. Peirson 1921-3-23 2374 Riverside Deep Canyon south of Coachella Valley 335 Comment
  RSA86856  Prunus fremontii F. W. Peirson 1917-4-1 1986 Riverside Fruiting specimen from Tahquitz Canyon, Palm Springs region. Comment
  RSA87021  Prosopis glandulosa var. torreyana F. W. Peirson 1920-6-22 4068 Riverside Temescal Canyon north of Elsinore 290 Comment
  RSA87055  Lupinus densiflorus var. lacteus F. W. Peirson 1922-4-29 4224 Riverside Dripping Spring, Temecula River, southwestern Riverside Co. 457 Comment
  RSA87101  Lupinus bicolor subsp. tridentatus F. W. Peirson 1922-5-18 3064 Riverside Keene Camp, San Jacinto Mts., Riverside county. 1463 Comment
  RSA87459  Lupinus concinnus subsp. optatus F. W. Peirson 1922-5-19 7721 Riverside Road to Keenes Camp, San Jacinto Mts. Comment
  RSA94144  Hulsea vestita subsp. callicarpha F. W. Peirson 1924-7-27 5005 Riverside Upper Dark Canyon, Deer Springs region, San Jacinto Mts. 2590 Comment
  RSA94385  Dyssodia porophylloides F. W. Peirson 1919-4-14 1411 Riverside Murray Canyon, Palm Springs Region. 457 Comment
  RSA94829  Trixis californica F. W. Peirson 1919-4-14 1463 Riverside Murray Canyon, near Palm Springs. Comment
  SBBG28232  Eriogonum thomasii F. W. Peirson 1927-4-12 7171 Riverside Painted Cyn, near Mecca Comment
  UC1076215  Tidestromia oblongifolia Frank W. Peirson 1924-12-30 5416 Riverside 1000 Palm Canyon 121 Comment
  UC511759  Phacelia campanularia subsp. campanularia Frank W. Peirson 1926-2-22 6499 Riverside talus slope at e end Bridge over Whitewater River Comment
  UC511830  Eriogonum elongatum var. elongatum Frank W. Peirson 1933-4-15 10651 Riverside 4 1/2 mi above the bridge; Whitewater River 701 Comment
  UC511896  Eriophyllum ambiguum var. paleaceum Frank W. Peirson 1933-4-13 10638 Riverside road from Deep Canyon to Idlewild 762 Comment
  UC555405  Lotus rigidus Frank W. Peirson 1922-4-9 Riverside Andreas Canyon Comment
  UC570588  Sisymbrium irio Frank W. Peirson 1935-4-17 11470 Riverside Blythe, along main street of the town and exactly opposite the High School Blythe Comment
  UC599196  Polygonum argyrocoleon Frank W. Peirson 1938-4-10 12379 Riverside 1-2 mi w Blythe (in ditch on roadside) Comment
  UC635494  Calandrinia ambigua Frank W. Peirson 1926-2-22 6512 Riverside rocky hills along summits 1000-Palm Canyon 152 Comment
  UCR139384  Lycium andersonii F. W. Peirson 1922-4-29 1084 Riverside Perris-Aguanga Region, Aguanga 610 Comment
  POM9932  Cheilanthes viscida F. W. Peirson 1921-3-22 2371 Riverside Murray Canyon, south side in canyon 457 Comment
  RSA0066528  Orobanche cooperi subsp. cooperi Frank W. Peirson 1924-12-30 5422 Riverside Thousand-Palms Canyon, Coachella Valley. 121 Comment
  RSA0066539  Orobanche cooperi subsp. cooperi Frank W. Peirson 1917-4-1 1176 Riverside Near Palm Springs, Coachella Valley. Comment
  RSA0066613  Harpagonella palmeri F. W. Peirson 1922-5-19 3029 Riverside 2.5 miles NE of Murrieta on the road to Perris. Comment
  RSA0081611  Pyrola aphylla F. W. Peirson 1924-7-27 4988 Riverside Dark Canyon, San Jacinto Mts. 1905 Comment
  RSA0094962  Saltugilia australis F. W. Peirson 1921-3-22 4136 Riverside Murray Canyon, Colo. Desert. 396 Comment
  RSA90159  Astragalus didymocarpus var. dispermus F. W. Peirson 1918-03 579 Riverside Coachella Valley, field near Indio. Comment
  RSA90230  Astragalus douglasii var. parishii F. W. Peirson 1922-5-20 3342 Riverside Hemet Valley, San Jacinto Mountains. 1371 Comment
  RSA90301  Lotus hamatus F. W. Peirson 1919-4-12 714 Riverside Along the Tahquitz Creek stream near Palm Springs Comment
  RSA90309  Lotus salsuginosus var. brevivexillus F. W. Peirson 1922-4-9 2873 Riverside In canyon eastward from lower part of Palm Canyon. Comment
  RSA90331  Lotus argophyllus subsp. decorus F. W. Peirson 1921-3-19 2367 Riverside Whitewater Point, head of Coachella Valley Comment
  RSA90380  Lotus salsuginosus var. brevivexillus F. W. Peirson 1927-4-12 7155 Riverside Painted canyon, near Mecca. Comment
  RSA90739  Astragalus pomonensis F. W. Peirson 1920-6-22 7696 Riverside Dripping Springs, Temecula River 457 Comment
  RSA91176  Isocoma acradenia var. eremophila F. W. Peirson 1922-12-28 4740 Riverside Andreas Canyon, east base of San Jacinto Mts. 244 Comment
  RSA91406  Trifolium albopurpureum F. W. Peirson 1922-4-29 4069 Riverside South of Temecula on Temecula River, Riverside Co., California 427 Comment
  RSA91415  Trifolium albopurpureum F. W. Peirson 1914-04 549 Riverside Beaumont, San Gorgonio Pass. Comment
  RSA92140  Schoenoplectus americanus F. W. Peirson 1921-3-20 2848 Riverside Palm Canyon, Colorado Desert. 305 Comment
  RSA92216  Palafoxia arida var. arida F. W. Peirson 1924-12-30 5426 Riverside Thousand Palms Canyon, Coachella Valley. 122 Comment
  RSA92446  Panicum urvilleanum F. W. Peirson 1928-3-10 7703 Riverside Just east of Whitewater Bridge, near Whitewater, at head of Coachella Valley. Comment
  RSA92505  Stylocline gnaphaloides F. W. Peirson 1930-5-10 8775 Riverside Summit of St. Johns Grade, south of Hemet. 762 Comment
  RSA92653  Salix exigua F. W. Peirson 1933-4-15 10650 Riverside Whitewater River, 4.5 miles above highway from Banning to Indio. 701 Comment
  RSA92696  Salix gooddingii F. W. Peirson 1918-03 719 Riverside Near Mecca and the Salton Sea. Comment
  RSA92883  Populus fremontii F. W. Peirson 1928-3-10 7699 Riverside along irrigation ditch, Snow Creek Auto Camp at Whitewater, head of Coachella Valley. Comment
  RSA93199  Baccharis salicifolia F. W. Peirson 1918-03 2231 Riverside Whitewater at head of Coachella Valley. Comment
  RSA93246  Chrysothamnus teretifolius F. W. Peirson 1937-10-20 12363 Riverside Santa Rosa Mts 1829 Comment
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Dec 17 2011
  RSA93281  Pentachaeta aurea F. W. Peirson 1922-5-19 3037 Riverside San Jacinto River 1143 Comment
  RSA93680  Filago californica F. W. Peirson 1921-3-22 5277 Riverside Murray Canyon, south side in canyon 457 Comment
  RSA93812  Chaenactis fremontii F. W. Peirson 1926-2-22 6501 Riverside On talus slope east of bridge over Whitewater River, head of Coachella Valley Comment
  RSA94066  Hemizonia kelloggii F. W. Peirson 1924-6-21 4757 Riverside Temescal Canyon. 290 Comment
  RSA94107  Peucephyllum schottii F. W. Peirson 1924-12-30 5423 Riverside Thousand Palms Canyon, Coachella Valley. 122 Comment
  RSA94111  Peucephyllum schottii F. W. Peirson 1918-03 1244 Riverside SE side of desert embankment at Palm Springs and almost opposite Andreas Canyon. Comment
  RSA94164  Monoptilon bellioides F. W. Peirson 1920-2-15 1383 Riverside Neaar Palm Springs, Coachella Valley. Comment
  RSA94168  Monoptilon bellioides F. W. Peirson 1922-4-11 2868 Riverside Deep Canyon Wash, southwest of Indio 244 Comment
  RSA94960  Malacothrix stebbinsii F. W. Peirson 1921-3-22 2715 Riverside Murray Canyon, south side in canyon 457 Comment
  RSA95026  Malacothrix coulteri F. W. Peirson 1922-4-29 2959 Riverside Roadside 2 miles south of Elsinore Comment
  RSA97151  Lomatium dasycarpum subsp. dasycarpum F. W. Peirson 1922-5-19 4461 Riverside 3 miles northeast of Murrieta. Comment
  SEINET10458956  Triodanis biflora Frank W. Peirson Peirson 6723 Riverside DRIPPING SPRING Comment
  SEINET10460870  Nemacladus sigmoideus Frank W. Peirson Peirson 7913 Riverside n Colorado Desert Comment
  CAS-BOT-BC100357  Brickellia atractyloides Frank W. Peirson 1930-4-29 8765 San Bernardino 2 miles east of Box S Ranch, [Mohave] Mojave Desert 914 Comment
  CAS-BOT-BC100839  Chrysothamnus viscidiflorus subsp. viscidiflorus Frank W. Peirson 1931-10-10 s.n. San Bernardino Road to Fish Hatchery south of Baldwin Lake, San Bernardino Mts. 2194 Comment
  CAS-BOT-BC10879  Erythranthe suksdorfii Frank Warrington Peirson 1922-6-22 4722 San Bernardino South Fork of Santa Ana River Meadows, San Bernardino Mountains 2346 Comment
  CAS-BOT-BC112009  Schoenus nigricans Frank Warrington Peirson 1924-9-2 5199 San Bernardino Arrowhead Hot Springs, San Bernardino Mts. 579 Comment
  CAS-BOT-BC132526  Calochortus striatus Frank W. Peirson 1924-5-14 4563 San Bernardino Box S. Springs Comment
  CAS-BOT-BC134089  Brickellia microphylla var. microphylla Frank W. Peirson 1920-9-15 2279 San Bernardino Lytle Creek, San Gabriel Mts. 1828 Comment
  CAS-BOT-BC174419  Eremogone macradenia var. macradenia Frank W. Peirson 1930-4-14 8698 San Bernardino Cave Spring, [Mohave] Mojave Desert Comment
  CAS-BOT-BC19746  Carex abrupta Frank W. Peirson 1923-8-23 3973 San Bernardino San Bernardino Mountains. High Creek. 2773 Comment
  CAS-BOT-BC215617  Monardella linoides subsp. erecta Frank W. Peirson 1924-9-2 5186 San Bernardino Fish Camp, City Creek Road, San Bernardino Mts. 2057 Comment
  CAS-BOT-BC268179  Eriogonum umbellatum var. minus Frank W. Peirson 1922-7-19 4210 San Bernardino San Gabriel Mts. Cucamonga Peak Comment
  CAS-BOT-BC278582  Festuca saximontana F. W. Peirson 1922-8-23 3266 San Bernardino Summit San Gorgonio, San Bernardino Mts. 3490 Comment
  CAS-BOT-BC307410  Gnaphalium palustre Frank W. Peirson 1924-7-5 4912 San Bernardino Bluff Lake, San Bernardino Mts. 2286 Comment
  CAS-BOT-BC326821  Xylorhiza tortifolia F. W. Peirson 1922-5-14 s.n. San Bernardino 5 miles norht of Barstow, Mojave Desert 914 Comment
  CAS-BOT-BC423157  Cleomella obtusifolia Frank W. Peirson 1924-5-14 4576 San Bernardino Mojave Desert. 21 miles east of Victorville Comment
  CAS-BOT-BC67804  Marsilea vestita Frank W. Peirson 1933-6-25 10674 San Bernardino San Bernardino Mts. - two miles southeast of Baldwin Lake 2133 Comment
  CAS-BOT-BC98455  Symphyotrichum spathulatum F. W. Peirson 1924-9-2 5184 San Bernardino Fish Camp, San Bernardino Mts. 2057 Comment
  JEPS11099  Penstemon rostriflorus Frank W. Peirson 1918-7-7 203 San Bernardino Icehouse Canyon San Gabriel Mountains, Icehouse Canyon 2286 Comment
  JEPS13534  Kopsiopsis strobilacea Frank W. Peirson 1920-5-29 523 San Bernardino Ontario Ridge San Gabriel Mountains. 2590 Comment
  JEPS2722 Image available Allium monticola Frank W. Peirson 1918-7-8 3 San Bernardino Baldy e trail Mt. San Antonio (Mt. San Antonio) 2865 Comment
  JEPS31871  Symphyotrichum frondosum Frank W. Peirson 1924-5 4595 San Bernardino Baldwin Lake San Bernardino Mts. 2036 Comment
  JEPS39250  Epilobium ciliatum subsp. glandulosum Frank W. Peirson 1920-9-14 2304 San Bernardino Coldwater Cienega San Gabriel Mts. (tributary of Lytle Creek) 2133 Comment
  JEPS41455  Erigeron breweri var. breweri F. W. Peirson 1922-8-22 3291 San Bernardino near stream; San Bernardino Mountains, Santa Ana River,South Fork; data in packet includes This looks to me like 3204... 2560 Comment
  JEPS47603  Allium burlewii Frank W. Peirson 1918-7-7 266 San Bernardino Summit Ontario Ridge Ontario Ridge 2621 Comment
  JEPS48227  Juniperus grandis Frank W. Peirson 1918-8-16 254 San Bernardino near Devils Back Bone (Baldy) 2438 Comment
  JEPS51408  Arenaria lanuginosa subsp. saxosa Frank W. Peirson 1923-8-22 3975 San Bernardino Vivian Creek Camp 2194 Comment
  JEPS56307  Eriogonum saxatile Frank W. Peirson 1918-7-8 25 San Bernardino Baldy (Mt. San Antonio) 2743 Comment
  JEPS56308  Eriogonum saxatile Frank W. Peirson 1918-7-7 24 San Bernardino Icehouse Canyon 2286 Comment
  JEPS58289  Linanthus breviculus Frank W. Peirson 1921-5-29 2420 San Bernardino Cajon Pass, n slope San Gabriel Mountains 1097 Comment
  JEPS7064  Collinsia torreyi var. brevicarinata Frank W. Peirson 1919-6-4 454 San Bernardino Icehouse Canyon Divide; San Gabriel Mtns 2407 Comment
  JEPS9916  Lasthenia gracilis F. W. Peirson 1919-4-16 389 San Bernardino Cajon Pass 685 Comment
  PASA1221  Cercocarpus ledifolius Frank W. Peirson 1924-7-5 San Bernardino Gold Mountain near Baldwin Lake, San Bernardino Mts. 2133 Comment
  PASA1245  Poa atropurpurea Frank W. Peirson 1924-5-16 San Bernardino South side Bear Lake, 2 miles from Dam, San Bernardino Mts. 2057 Comment
  PASA1337  Phacelia humilis Frank W. Peirson 1930-7-4 San Bernardino Greene Creek, north slope sugarloaf, San Bernardino Mts. 2377 Comment
  PASA156  Orthocarpus lasiorhynchus Frank W. Peirson 1930-7-7 San Bernardino Arrastre Flat, San Bernardino Mts. 2285 Comment
  PASA1565  Nicolletia occidentalis Frank W. Peirson 1930-4-13 San Bernardino 10 miles sout of Garlic Spring, Mohave Desert Comment
  PASA1719  Erigeron canadensis Frank W. Peirson 1920-8-24 San Bernardino Santa Ana River, San Bernardino Mts. 1920 Comment
  PASA1744  Sidalcea hickmanii var. parishii Frank W. Peirson 1922-6-24 San Bernardino Foxsee Creek, San Bernardino Mts. 1828 Comment
  PASA1754  Sidalcea pedata Frank W. Peirson 1924-5-15 San Bernardino Baldwin Lake, San Bernardino Mts. Comment
  PASA1802  Aster canescens Frank W. Peirson 1922-8-23 San Bernardino South Fork Santa Ana River, San Bernardino Mts. 2560 Comment
  PASA1809  Corethrogyne filaginifolia Frank W. Peirson 1920-9-13 San Bernardino San Antonio Canyon, San Gabriel Mts. 1523 Comment
  PASA1813  Corethrogyne filaginifolia Frank W. Peirson 1924-9-2 San Bernardino Fish Camp, San Bernardino Mts. 2057 Comment
  PASA1817  Chrysothamnus viscidiflorus Frank W. Peirson 1931-10-10 San Bernardino Road to Fish Hatchery south of Baldwin Lake, San Bernardino Mts. 2194 Comment
  PASA2106  Nama rothrockii Frank W. Peirson 1931-7-9 San Bernardino North rim of Holcomb Valley, San Bernardino Mtns, at Arctic Canyon 2346 Comment
  PASA220  Psoralea rigida Frank W. Peirson 1930-7-3 San Bernardino Road to Fish Hatchery south of Baldwin Lake, San Bernardino Mts. Comment
  PASA2205  Dyssodia cooperi Frank W. Peirson 1922-5-12 San Bernardino 3 miles south of Barstow on the Victoryville Road Comment
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Oct 23 2014
  PASA2376  Acer glabrum Frank W. Peirson 1930-7-4 San Bernardino Greene Creek, north slope Sugarloaf, San Bernardino Mts. 2438 Comment
  PASA2708  Astragalus acutirostris Frank W. Peirson 1930-5-31 8925 San Bernardino Summit of grade above Warrens Well Comment
  PASA808  Lupinus breweri Frank W. Peirson 1930-7-5 San Bernardino Near Peter Pan Woodland Club, San Bernardino Mts. 2072 Comment
  POM128761  Phacelia pachyphylla F. W. Peirson 1927-5-7 s.n. San Bernardino 10 miles N of Barstow Comment
  POM13534  Calyptridium parryi F. W. Peirson 1922-6-21 s.n. San Bernardino Cienega Seca Creek. 2134 Comment
  POM13546  Hulsea vestita subsp. parryi F. W. Peirson 1922-6-24 s.n. San Bernardino South Fork of the Santa Ana River 1921 Comment
  POM142529  Camissonia confusa F. W. Peirson 1920-5-28 4701 San Bernardino San Antonio Canyon, San Gabriel Mts. 1463 Comment
  POM175476  Artemisia ludoviciana subsp. ludoviciana F. W. Peirson 1931-10-10 9601 San Bernardino Baldwin Lake, San Bernardino Mountains 2073 Comment
  POM43350  Horkelia wilderae F. W. Peirson 1922-6-25 4277 San Bernardino Barton Flats. Comment
  POM9680  Gentiana fremontii F. W. Peirson 1920-8-25 s.n. San Bernardino South Fork of Santa Ana River 2439 Comment
  RSA0057744  Arenaria lanuginosa var. saxosa F. W. Peirson 1920-8-25 2246 San Bernardino South Fork of Santa Ana River, San Bernardino Mts. 2590 Comment
  RSA0066184  Heuchera parishii F. W. Peirson 1924-7-13 4933 San Bernardino Big Meadows, Upper Santa Ana River, San Bernardino Mountains. 2133 Comment
  RSA0129772  Arabis parishii F. W. Peirson 1922-6-23 3101 San Bernardino Along ridge eastward from summit of Sugarloaf Peak, San Bernardino Mountains. 2957 Comment
  RSA365953  Schoenus nigricans F. W. Peirson 1923-8-30 4000 San Bernardino Lone Pine Canyon 1479 Comment
  RSA366029  Scirpus microcarpus F. W. Peirson 1922-6-20 S- 097 San Bernardino 4 miles SE of San Bernardino. Comment
  RSA368902  Luzula comosa F. W. Peirson 1922-6-24 s.n. San Bernardino South Fork of the Santa Ana River 1921 Comment
  RSA427445  Solanum umbelliferum F. W. Peirson 1924-9-1 5154 San Bernardino Johnson's Grade, east end of San Bernardino Mountains 1982 Comment
  RSA445622  Eschscholzia glyptosperma F. W. Peirson 1922-5-14 3003 San Bernardino 5 miles north of Barstow. Comment
  RSA466640  Cistanthe monosperma F. W. Peirson 1924-7-5 4910 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA473031  Senecio bernardinus F. W. Peirson 1924-7-6 4924 San Bernardino North shore of Bear Lake (Nr its West end) 2042 Comment
  RSA614278  Ericameria cooperi F. W. Peirson 1931-5-30 5427 San Bernardino Mojave River, E of Hesperia. Old river terrace 884 Comment
  RSA64576  Eriogonum saxatile F. W. Peirson 1920-9-12 25 San Bernardino San Gabriel Mountains: Mt. San Antonio (Baldy) 2820 Comment
  RSA64914  Chenopodium berlandieri var. sinuatum F. W. Peirson 1924-9-1 5142 San Bernardino Cushenbury Springs, N base of San Bernardino Mountains., Mojave Desert. 1232 Comment
  RSA65039  Silene parishii F. W. Peirson 1924-7-13 5320 San Bernardino Divide between Fish and Mission Creeks 2530 Comment
  RSA65088  Eriogonum hirtiflorum F. W. Peirson 1916-7-4 1730 San Bernardino Road between Lake Arrowhead and Bear Valley. Comment
  RSA65226  Eriogonum maculatum F. W. Peirson 1926-4-28 6690 San Bernardino Box S Spring, s. Mojave Desert. 1082 Comment
  RSA65684  Lewisia brachycalyx F. W. Peirson 1924-5-16 4617 San Bernardino 2.5 miles from Bear Lake Dam on south side of Bear Lake 2043 Comment
  RSA65784  Cleomella plocasperma F. W. Peirson 1924-9-1 5137 San Bernardino Open land above Box S Spring, grade near Cushenberry Spring. north base of San Bernardino Mountains. 1128 Comment
  RSA65929  Eriogonum kennedyi var. kennedyi F. W. Peirson 1930-7-2 8966 San Bernardino Ridge at summit of Johnson's Grade, east of Baldwin Lake. 2104 Comment
  RSA65987  Eriogonum umbellatum var. minus F. W. Peirson 1922-7-19 4210 San Bernardino Cucamonga Peak, San Gabriel Mountains 2591 Comment
  RSA66057  Rorippa sinuata F. W. Peirson 1922-6-22 4185 San Bernardino South Fork of Santa Ana River 2348 Comment
  RSA66198  Arabis pulchra F. W. Peirson 1924-5-15 4568 San Bernardino Cactus Flat 1829 Comment
  RSA66489  Eschscholzia glyptosperma F. W. Peirson 1932-3-24 9821 San Bernardino Baker, along SW base of rock hill 280 Comment
  RSA66516  Arabis platysperma F. W. Peirson 1924-7-5 4897 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA66685  Wislizenia refracta subsp. refracta F. W. Peirson 1928-4-26 7922 San Bernardino Twentynine Palms, s. edge of Mojave Desert Comment
  RSA66818  Caulanthus cooperi F. W. Peirson 1917-5-14 672 San Bernardino Cajon Pass. Comment
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Jan 2 2017
  RSA67140  Galium parishii F. W. Peirson 1920-8-24 2654 San Bernardino Big Meadow. 2134 Comment
  RSA68616  Calochortus invenustus Frank W. Peirson 1922-7-24 s.n. San Bernardino South Fork of the Santa Ana River, San Bernardino Mountains. 2073 Comment
  RSA68965  Plantago purshii var. oblonga F. W. Peirson 1916-7-8 1180 San Bernardino Near western end of Baldwin Lake. San Bernardino Mts Comment
  RSA68983  Plantago ovata var. fastigiata F. W. Peirson 1922-5-14 4497 San Bernardino 8 miles north of Barstow, on Granite Wells road; Mojave desert Comment
  RSA68999  Samolus parviflorus F. W. Peirson 1923-8-26 s.n. San Bernardino above road to Seven Oaks, in Mill Creek. 1220 Comment
  RSA69543  Mentzelia reflexa F. W. Peirson 1932-3-24 9824 San Bernardino Baker, along SW base of rock hill 280 Comment
  RSA69635  Juncus balticus subsp. ater F. W. Peirson 1920-8-25 2268 San Bernardino Dollar Lake, San Bernardino Mountains. 2744 Comment
  RSA69874  Amsonia tomentosa var. tomentosa F. W. Peirson 1916-7-8 883 San Bernardino Box S Springs near north base of San Bernardino Mtns. 1082 Comment
  RSA69941  Nitrophila occidentalis F. W. Peirson 1920-6-22 1836 San Bernardino Chino Creek 152 Comment
  RSA69949  Grayia spinosa F. W. Peirson 1922-5-13 2998 San Bernardino Granite Wells, Mojave Desert. Comment
  RSA69952  Krascheninnikovia lanata F. W. Peirson 1917-5-13 1831 San Bernardino West of Victorville. Comment
  RSA69986  Mirabilis pumila F. W. Peirson 1922-8-26 5217 San Bernardino Cienega Seca Creek 2378 Comment
  RSA70020  Suaeda calceoliformis F. W. Peirson 1924-9-1 5159 San Bernardino Saline flats at N end of Baldwin Lake, San Bernardino Mts. 2043 Comment
  RSA70068  Platanthera sparsiflora Frank W. Peirson 1920-9-14 4284 San Bernardino Coldwater cienega, tributary of Lytle Creek, San Gabriel Mountains. 2134 Comment
  RSA70074  Piperia unalascensis Frank W. Peirson 1922-6-25 3152 San Bernardino Barton Flats, San Bernardino Mountains. 1982 Comment
  RSA70176  Allium monticola F. W. Peirson 1919-6-14 5355 San Bernardino Icehouse canyon 1829 Comment
  RSA70181  Allium parryi F. W. Peirson 1922-6-25 3139 San Bernardino Along road shortly before Barton Flat Road, valley of Santa Ana River, San Bernardino Mountains. 1616 Comment
  RSA70182  Allium parryi F. W. Peirson 1916-7-6 1649 San Bernardino Bear Lake. San Bernardino Mts. Comment
  RSA70315  Juncus xiphioides F. W. Peirson 1923-8-30 4024 San Bernardino Clyde Ranch, Lone Pine Canyon. Eastern San Gabriel Mountains, west San Bernardino County 1494 Comment
  RSA70324  Asclepias erosa F. W. Peirson 1927-7-10 7354 San Bernardino Mexican Well, eastern border of San Bernardino Co. 1220 Comment
  RSA70394  Chamaesyce setiloba F. W. Peirson 1930-4-14 8705 San Bernardino About 3 miles north of Cave Spring. Comment
  RSA70521  Calochortus striatus Frank W. Peirson 1924-5-14 4563 San Bernardino Box S Springs in Cushenberry [Cushenbury] Springs Region, north base of San Bernardino Mountains. 1082 Comment
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Oct 25 2014
  RSA70529  Calochortus invenustus Frank W. Peirson 1930-7-1 8964 San Bernardino Baldwin Lake 2043 Comment
  RSA70583  Sisyrinchium bellum Frank W. Peirson 1918-7-8 11 San Bernardino San Antonio Canyon, Los Angeles-San Bernardino County Line 1829 Comment
  RSA70592  Iris missouriensis Frank W. Peirson 1926-5-30 6743 San Bernardino North side of Baldwin Lake. San Bernardino Mountains. Alt. 6700 ft. 2043 Comment
  RSA70607  Iris hartwegii subsp. australis Frank W. Peirson 1916-7-6 1692 San Bernardino Bear Lake region [Big Bear Lake], San Bernardino Mountains. Comment
  RSA71005  Cuscuta ceanothi F. W. Peirson 1920-8-26 2740 San Bernardino Santa Ana River 1372 Comment
  RSA71824  Saltugilia splendens subsp. splendens F. W. Peirson 1922-7-5 3161 San Bernardino Swartout Valley, 1 mile east of Big Pines 2012 Comment
  RSA71828  Saltugilia splendens F. W. Peirson 1929-7-11 8470 San Bernardino City Creek Road along the slopes of Bear Canyon, San Bernardino Mountains. 2134 Comment
  RSA71833  Gilia leptantha subsp. leptantha F. W. Peirson 1924-7-13 4942 San Bernardino Along bank of Fish Creek, upper Santa Ana River 2317 Comment
  RSA71850  Gilia cana subsp. speciformis F. W. Peirson 1922-5-12 4138 San Bernardino Mojave Desert. 10 miles north of Barstow. Comment
  RSA71999  Phlox austromontana F. W. Peirson 1926-5-30 6745 San Bernardino On low hills, chiefly along summits on north side of Baldwin Lake. San Bernardino Mountains. 2043 Comment
  RSA72083  Microsteris gracilis subsp. gracilis F. W. Peirson 1924-5-16 4586 San Bernardino 2.5 miles from Bear Lake Dam on south side of Bear Lake 2043 Comment
  RSA72091  Epilobium canum subsp. latifolium F. W. Peirson 1920-8-23 3349 San Bernardino Santa Ana River 1905 Comment
  RSA72092  Epilobium canum subsp. latifolium F. W. Peirson 1920-8-26 6480 San Bernardino Santa Ana River 1372 Comment
  RSA72113  Epilobium brachycarpum F. W. Peirson 1920-8-23 4453 San Bernardino South Fork of Santa Ana River, San Bernardino Mts. 1921 Comment
  RSA72314  Gilia diegensis F. W. Peirson 1919-4-16 4133 San Bernardino South slope of Cajon Pass. 686 Comment
  RSA72341  Epilobium canum subsp. latifolium F. W. Peirson 1920-8-22 2250 San Bernardino Foxesee Creek 2439 Comment
  RSA73028  Linanthus jonesii F. W. Peirson 1935-4-18 11483 San Bernardino Along canyon of Copper Basin Creek, Whipple Mountains, eastern Colorado Desert Comment
  RSA73070  Linanthus demissus F. W. Peirson 1922-5-14 2967 San Bernardino In so-called Devil's Kitchen; half way between Barstow and Victorville. Comment
  RSA74506  Phacelia exilis F. W. Peirson 1932-5-29 9969 San Bernardino Along road to Fish Hatchery, south of Baldwin Lake 2104 Comment
  RSA74714  Nama densa var. parviflora F. W. Peirson 1932-5-10 9958 San Bernardino 26 miles W of Baker on the Barstow road. 457 Comment
  RSA75342  Phacelia bicolor F. W. Peirson 1930-5-31 8919 San Bernardino Road from Lovejoy Buttes to Adelanto, southwestern Mojave Desert. ca. 20 mi. west of Victorville. Comment
  RSA75372  Camissonia boothii subsp. boothii F. W. Peirson 1916-7-9 792 San Bernardino Mojave Desert, near Victorville. Comment
  RSA75866  Nemophila menziesii var. integrifolia F. W. Peirson 1919-4-16 364 San Bernardino South slope of Cajon Pass. 686 Comment
  RSA75881  Nemophila menziesii var. integrifolia F. W. Peirson 1924-5-16 4602 San Bernardino City Creek Road, Fredalba, San Bernardino Mts. 1524 Comment
  RSA75882  Nemophila menziesii var. integrifolia F. W. Peirson 1920-5-8 2739 San Bernardino San Antonio Canyon. 1341 Comment
  RSA766085  Eriogonum inflatum var. deflatum F. W. Peirson 1935-4-18 11479 San Bernardino Whipple Mountains. Copper Basin Creek. A mile or two up the canyon. Comment
  RSA76943  Rhus trilobata var. pilosissima F. W. Peirson 1921-5-30 5312 San Bernardino Summit of Cajon Pass.. 1159 Comment
  RSA77036  Malacothamnus orbiculatus F. W. Peirson 1929-9-11 8591 San Bernardino Bear Valley Boulevard near Peter Pan Woodland Club, Bear Valley, San Bernardino Mts. 2073 Comment
  RSA77058  Loeseliastrum schottii F. W. Peirson 1927-5-7 7275 San Bernardino 1 mile east of Kramer. 2218 Comment
  RSA77156  Ceanothus leucodermis F. W. Peirson 1921-7-18 4446 San Bernardino Lytle Creek, San Gabriel Mts. 1677 Comment
  RSA77245  Hesperochiron californicus F. W. Peirson 1932-5-28 9964 San Bernardino Southwest shore of Baldwin Lake, San Bernardino Mountains. 2043 Comment
  RSA77428  Petalonyx nitidus F. W. Peirson 1916-7-8 2076 San Bernardino Cushenberry Grade on north base of San Bernardino Mountains Comment
  RSA77774  Viola macloskeyi F. W. Peirson 1922-7-18 3202 San Bernardino Kelly's Cabin, Ontario Ridge, San Gabriel Mountains, west San Bernardino County. 2470 Comment
  RSA79759  Penstemon incertus F. W. Peirson 1930-5-31 8929 San Bernardino Summit of grade above Warrens Well. Little San Bern Mtns. Comment
  RSA79853  Penstemon X parishii F. W. Peirson 1919-4-16 1107 San Bernardino Cajon Pass, west end of San Bernardino Mts. 686 Comment
  RSA79867  Penstemon rostriflorus F. W. Peirson 1920-8-22 2263 San Bernardino Foxesee Creek [Forsee Creek], San Bernardino Mts. 2591 Comment
  RSA79901  Physalis crassifolia F. W. Peirson 1928-4-1 7757 San Bernardino 19 mi. east of Barstow on rod to Baker. Comment
  RSA80010  Cryptantha micrantha var. lepida F. W. Peirson 1919-4-16 370 San Bernardino South slope of Cajon Pass. 686 Comment
  RSA80055  Veronica peregrina subsp. xalapensis F. W. Peirson 1906-8-15 2595 San Bernardino Lookout Mt., Bluff Lake, San Bernardino Mountains. Comment
  RSA80203  Plagiobothrys jonesii F. W. Peirson 1935-4-18 11495 San Bernardino Summit of main ridge N of Copper Basin, Whipple Mts 686 Comment
  RSA80207  Plagiobothrys arizonicus F. W. Peirson 1930-4-16 8727 San Bernardino 8 miles south of Cima, eastern San Bernardino Comment
  RSA80236  Orthocarpus purpurascens var. ornatus F. W. Peirson 1930-5-31 8920 San Bernardino Road from Lovejoy Buttes to Adelanto, southwestern Mojave Desert. ca. 20 mi. west of Victorville. Comment
  RSA80314  Hydrocotyle umbellata F. W. Peirson 1906-08 815 San Bernardino Santa Ana River near Seven Oaks. San Bernardino Mts. Comment
  RSA80352  Conium maculatum F. W. Peirson 1920-5-18 2115 San Bernardino Lytle Creek, east end of San Gabriel Mts. 1067 Comment
  RSA80710  Boisduvalia densiflora F. W. Peirson 2082 San Bernardino San Bernardino Mountains. Comment
  RSA80725  Lythrum californicum F. W. Peirson 1924-8-31 5134 San Bernardino Box S Springs, southern Mojave Desert 1082 Comment
  RSA80759  Cryptantha nevadensis var. rigida F. W. Peirson 1916-7-8 1022 San Bernardino Cushenbury Springs, north base of San Bernardino Mountains. Comment
  RSA81489  Castilleja linariifolia F. W. Peirson 1916-7-8 1156 San Bernardino Box 'S' Springs near north base of San Bernardino Mtns. 1082 Comment
  RSA82036  Cordylanthus nevinii F. W. Peirson 1920-9-15 2248 San Bernardino North Fork of Lytle Creek 1829 Comment
  RSA82054  Cordylanthus nevinii F. W. Peirson 1926-9-5 7076 San Bernardino Lake Arrowhead. 1524 Comment
  RSA82074  Utricularia vulgaris subsp. macrorhiza F. W. Peirson 1924-8-31 5113 San Bernardino South of Victorville 793 Comment
  RSA82078B  Orobanche fasciculata F. W. Peirson 1909-1 s.n. San Bernardino Dry Lake. Comment
  RSA82193  Trichostema parishii F. W. Peirson 1920-8-26 1044 San Bernardino San Bernardino Mountains: Barton Flats. road east of Foxesee Creek. 1753 Comment
  RSA82255  Castilleja angustifolia F. W. Peirson 1922-5-12 4493 San Bernardino 10 miles N of Barstow on Granite Wells Road Comment
  RSA82522  Limosella acaulis F. W. Peirson 1906-8-14 857 San Bernardino Bluff Lake, San Bernardino Mountains. Comment
  RSA82996  Salvia pachyphylla subsp. pachyphylla F. W. Peirson 1920-8-22 1060 San Bernardino Ridge east of Foxesee Creek [Forsee Creek]. 2439 Comment
  RSA83387  Monardella lanceolata var. lanceolata F. W. Peirson 1926-9-5 7077 San Bernardino Lake Arrowhead 1524 Comment
  RSA83931  Ranunculus californicus F. W. Peirson 1922-4-28 4305 San Bernardino Chino Creek, south of Chino 152 Comment
  RSA84210  Sedum niveum F. W. Peirson 1922-8-24 3293 San Bernardino Rocky ledge above Dollar Lake, San Bernardino Mountains. 2834 Comment
  RSA84252  Parnassia cirrata F. W. Peirson 1923-8-24 3980 San Bernardino Vivian Creek 2439 Comment
  RSA84286  Equisetum laevigatum F. W. Peirson 1922-6-24 3098 San Bernardino South Fork of the Santa Ana River 1921 Comment
  RSA84420  Aquilegia formosa F. W. Peirson 1924-7-5 4896 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA84460  Clematis ligusticifolia F. W. Peirson 1924-7-16 s.n. San Bernardino Potato Canyon, Oak Glen. 1280 Comment
  RSA84464  Clematis ligusticifolia var. californica F. W. Peirson 1924-8-31 s.n. San Bernardino Box S Spring east of Victorville, Mojave Desert. 1082 Comment
  RSA85020  Polypodium hesperium F. W. Peirson 1923-8-22 3984 San Bernardino Vivian Creek, San Bernardino Mountains 2195 Comment
  RSA85182  Ephedra nevadensis F. W. Peirson 1930-4-29 8766 San Bernardino 1 mile west of the Mohave River on the Hesperia Road. 854 Comment
  RSA85197  Typha latifolia F. W. Peirson 1923-8-30 4019 San Bernardino Clyde Ranch, Lone Pine Canyon. Eastern San Gabriel Mountains, west San Bernardino County 1494 Comment
  RSA85565  Potamogeton pusillus F. W. Peirson 1924-8-31 5105 San Bernardino Pond along the railroad track south of Victorville. Comment
  RSA86290  Ivesia saxosa F. W. Peirson 1924-5-15 4605 San Bernardino Cactus Flat. 1799 Comment
  RSA86655  Purshia tridentata var. glandulosa F. W. Peirson 1930-7-3 8982 San Bernardino About 0.5 mile below Fish Hatchery south of Baldwin Lake. 2195 Comment
  RSA86692  Vulpia microstachys F. W. Peirson 1922-6-24 3134 San Bernardino South bank of Santa Ana River 1/4 mile above confluence of South Fork Comment
  RSA86827  Rubus leucodermis F. W. Peirson 1920-9-14 8654 San Bernardino Coldwater Fork of Lytle Creek, eastern San Gabriel Mountains 2134 Comment
  RSA86846  Prunus emarginata F. W. Peirson 1924-5-16 4615 San Bernardino Bear Lake Dam. 2043 Comment
  RSA86988  Senna armata F. W. Peirson 1927-5-7 7288 San Bernardino 4 miles west of Barstow Comment
  RSA87010  Pickeringia montana var. tomentosa F. W. Peirson 1924-9-2 5197 San Bernardino City Creek Road, San Bernardino Mts. 1524 Comment
  RSA87065  Imperata brevifolia F. W. Peirson 1924-9-2 5201 San Bernardino Arrowhead Hot Springs. 579 Comment
  RSA87203  Lupinus elatus F. W. Peirson 1919-6-4 2435 San Bernardino Icehouse Canyon Divide, San Gabriel Mountains. 2409 Comment
  RSA87211  Lupinus elatus F. W. Peirson 1924-7-5 4911 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA87371  Agrostis idahoensis F. W. Peirson 1918-7-7 1576 San Bernardino Kellly's Cabin, Ontario Ridge, San Gabriel Mountains. 2500 Comment
  RSA87395  Lupinus confertus F. W. Peirson 1924-7-5 4914 San Bernardino North shore of Baldwin Lake 2037 Comment
  RSA88744  Carex hassei F. W. Peirson 1920-5-18 2329 San Bernardino Lytle Creek, east end of San Gabriel Mts. 1067 Comment
  RSA88813  Carex fracta F. W. Peirson 1922-8-25 3279 San Bernardino South Fork of Santa Ana River, San Bernardino Mountains. 2348 Comment
  RSA90179  Astragalus bicristatus F. W. Peirson 1924-5-16 4588 San Bernardino North side of Bear Lake, San Bernardino Mts 2072 Comment
  RSA90247  Astragalus lentiginosus var. sierrae F. W. Peirson 1942-5-10 s.n. San Bernardino East side of Baldwin Lake, San Bernardino Mts. 2057 Comment
  RSA90435  Oxytropis oreophila F. W. Peirson 1906-8-19 2008 San Bernardino Summit of San Gorgonio Peak 3491 Comment
  RSA91064  Trifolium longipes subsp. atrorubens F. W. Peirson 1924-5-16 4598 San Bernardino 2.5 miles from Bear Lake Dam on south side of Bear Lake 2043 Comment
  RSA91287  Lessingia glandulifera var. glandulifera F. W. Peirson 1929-10-5 8595 San Bernardino Along stream south of Peter Pan Woodland Club, Bear Valley 2134 Comment
  RSA91719  Gnaphalium thermale F. W. Peirson 1926-9-5 7081 San Bernardino Lake Arrowhead 1524 Comment
  RSA91963  Elymus elymoides subsp. californicus F. W. Peirson 1922-7-21 s.n San Bernardino North slope of Mt San Antonio, San Gabriel Mountains 2957 Comment
  RSA91977  Pleuraphis rigida F. W. Peirson 1924-5-14 54544 San Bernardino Box S Springs in Cushenberry [Cushenbury] Springs Region, north base of San Bernardino Mountains. 1082 Comment
  RSA91996  Polypogon monspeliensis F. W. Peirson 1577 San Bernardino Trail to Dry Lake Comment
  RSA92148  Fimbristylis thermalis F. W. Peirson 1924-9-2 5200 San Bernardino Arrowhead Hot Springs. 579 Comment
Read comments
Dec 24 2010
  RSA92150  Eleocharis quinqueflora F. W. Peirson 1922-6-22 3120 San Bernardino South Fork of Santa Ana River, San Bernardino Mountains. 2378 Comment
  RSA92438  Poa atropurpurea F. W. Peirson 1932-5-28 9973 San Bernardino southwest shores of Baldwin Lake, San Bernardino Mountains. 2058 Comment
  RSA92841  Madia elegans subsp. wheeleri F. W. Peirson 1930-7-7 9026 San Bernardino Arrastre Flat 2287 Comment
  RSA93388A  Helenium bigelovii F. W. Peirson 1923-8-22 3985 San Bernardino Vivian Creek, San Bernardino Mountains 2195 Comment
  RSA94634  Syntrichopappus lemmonii F. W. Peirson 1917-5-13 1378 San Bernardino Summit of Cajon Pass 1098 Comment
  RSA94682  Packera ionophylla F. W. Peirson 1922-6-22 4250 San Bernardino South Fork of Santa Ana River; San Bernardino Mountains. 2378 Comment
  RSA94689  Senecio bernardinus F. W. Peirson 1922-6-23 3145 San Bernardino Sugarloaf Mountain 2438 Comment
  SD87570  Gilia diegensis F. W Peirson 1919-4-16 4133 San Bernardino Cajon Pass. 686 Comment
  SD87594  Boechera parishii F. W. Peirson 1922-6-23 3101 San Bernardino San Bernardino Mountains, Summit of Sugarloaf 2970 Comment
  SEINET3142543  Mirabilis laevis var. villosa F. W. Peirson 1924-5-15 4611 San Bernardino Cushenberry Grade, San Bernardino Mts. 1311 Comment
  SEINET5764661 Image available Haplopappus acradenius subsp. eremophilus Frank W. Peirson 1924-8-31 5128 San Bernardino Mojave Desert: Box S Ranch [ranch site = town of Lucerne Valley, Hwy 18 jct Hwy 247] 1082 Comment
  UC483078  Salix lasiolepis Frank W. Peirson 1919-6-6 717 San Bernardino North Fork San Antonio Creek 2286 Comment
  UC501530  Lewisia nevadensis Frank W. Peirson 1926-5-31 6754 San Bernardino Bluff Lake San Bernardino Mts., Bluff Lake 2286 Comment
  UC501543  Calystegia occidentalis subsp. fulcrata Frank W. Peirson 1930-7-4 8988 San Bernardino n slope Sugarloaf (Green Creek, San Bernardino Mts.); San Bernardino Mts., n slope Sugarloaf, Green Creek 2377 Comment
  UC501596  Lesquerella tenella Frank W. Peirson 1932-3-23 9812 San Bernardino on the Blythe Road 35 mi s Needles; s of Needles Comment
  UC501631  Lessingia glandulifera var. glandulifera Frank W. Peirson 1921-5-29 1262 San Bernardino opposite Hesperia; Mohave River 868 Comment
  UC511749  Leymus triticoides Frank W. Peirson 1933-7-13 San Bernardino unused roadways near Baldwin Lake; San Bernardino Mts., Bear Valley 2057 Comment
  UC511751  Potentilla anserina subsp. anserina Frank W. Peirson 1933-6-24 4593 San Bernardino shores Baldwin Lake San Bernardino Mts., shores Baldwin Lake 2057 Comment
  UC511771  Erigeron aphanactis var. congestus Frank W. Peirson 1933-6-24 10676 San Bernardino along ridge s from the summit Johnson Grade; San Bernardino Mts., Johnson Grade 2133 Comment
  UC511772  Lotus argyraeus Frank W. Peirson 1933-6-24 10677 San Bernardino ridge s summit of the Johnson Grade; San Bernardino Mts. 2133 Comment
  UC511779  Potentilla biennis Frank W. Peirson 1933-6-25 10672 San Bernardino 2 mi se Baldwin Lake (Bear Valley); San Bernardino Mts., Bear Valley 2133 Comment
  UC566628  Packera ionophylla Frank W. Peirson 1924-7-14 4961 San Bernardino Lost Creek San Bernardino Mts. 2743 Comment
  UC570604  Anemone tuberosa Frank W. Peirson 1935-4-18 11502 San Bernardino n. part of Range near rd. going down into Copper Basin; Whipple Mts. 457 Comment
  UC570608  Cercidium microphyllum Frank W. Peirson 1935-4-18 11500 San Bernardino near site of Parker Dam; Whipple Mountains Comment
  UC632778  Fimbristylis thermalis Frank W. Peirson 1924-9-2 5200 San Bernardino Arrowhead Hot Springs; in little canyon 579 Comment
Read comments
Dec 24 2010
  UC908493  Eriastrum sapphirinum Frank W. Peirson 1926-5-29 6735 San Bernardino e Victorville; Deadman Point Comment
  UCD91362  Polypogon monspeliensis F. W. Peirson 1920-8-24 2274 San Bernardino East of Big Meadow, head of Santa Ana River, San Bernardino Mountains. Southern California. 2164 Comment
  UCR136638  Castilleja linariifolia F. W. Peirson 1924-8-31 1156 San Bernardino Mojave Desert, Box 'S' Spring, near Cushenbury Spring 1082 Comment
  UCR19612  Langloisia schottii F. W. Peirson 1927-5-7 7275 San Bernardino Western Mojave Desert, 1 mi. east of Kramer 757 Comment
  CAS-BOT-BC242826  Eriogonum davidsonii Frank W. Peirson 1920-9-12 2278 San Bernardino Mt. Baldy (San Bernardino), south trail; San Gabriel Mts. 2438 Comment
  CAS-BOT-BC338963  Lasthenia californica F. W. Peirson 1919-4-16 389 San Bernardino Foot of mountains near Lytle Creek 533 Comment
  CAS-BOT-BC357353  Pseudognaphalium microcephalum Frank W. Peirson 1920-9-16 5251 San Bernardino North Fork San Antonio Creek, San Gabriel Mts. 1981 Comment
  CAS-BOT-BC410982  Nemacladus sigmoideus F. W. Peirson 1926-5-30 6747 San Bernardino Hills north side of Baldwin Lake Comment
  JEPS1409  Nama pusilla Frank W. Peirson 1932-5-10 9954 San Bernardino 15 mi n Baker (Mohave Desert, beds of former pools); Mohave Desert, n of Baker Comment
  PASA1123  Scutellaria angustifolia Frank W. Peirson 1940-7-3 San Bernardino Road to Fish Hatchery south of Baldwin Lake, San Bernardino Mts. 2133 Comment
  PASA1340  Phacelia heterophylla Frank W. Peirson 1930-7-5 San Bernardino Quarry northwest of Baldwin Lake, San Bernardino Mts. 2072 Comment
  PASA1575  Syntrichopappus fremontii Frank W. Peirson 1922-5-12 San Bernardino 22 miles north of Barstow on the Granite Wells Road Comment
  PASA1664  Lupinus horizontalis var. platypetalus Frank W. Peirson 1922-5-12 San Bernardino 22 miles north of Barstow on the Granite Wells Road Comment
  PASA315  Malacothrix sonchoides Frank W. Peirson 1926-4-27 San Bernardino Vicinity of Box S. Ranch Comment
  PASA614  Scirpus rostellatus Frank W. Peirson 1922-7-7 San Bernardino Swartout Valley. Marsh near Ranger's Cabin Comment
  POM212924  Cheilanthes parryi F. W. Peirson 1935-4-18 11501 San Bernardino Whipple Mountains, Northern Part of Range Comment
  RSA0001969  Lesquerella kingii subsp. bernardina F. W. Peirson 1924-5-16 4600 San Bernardino In woods on north side of east end of Bear Lake. San Bernardino Mtns. 2043 Comment
  RSA0016144  Monardella australis subsp. australis F. W. Peirson 1924-7-6 4926 San Bernardino Rim Road, San Bernardino Mtns. 1829 Comment
  RSA0016432  Helianthus nuttallii subsp. nuttallii F. W. Peirson 1924-9-1 5139 San Bernardino Cushenbury Springs, N base of San Bernardino Mountains., Mojave Desert. 1232 Comment
  RSA0038273  Krameria parvifolia Frank W. Peirson 1926-4-28 s.n. San Bernardino Box S. Spring, Mohave Desert. 1082 Comment
  RSA0042705  Thysanocarpus rigidus F. W. Peirson s.n. San Bernardino Mojave River. 883 Comment
  RSA0059734  Fimbristylis thermalis Frank W. Peirson 1924-9-2 5200 San Bernardino Arrowhead Hot Springs. Abundant in the Little Canon. 579 Comment
  RSA0066546  Erigeron foliosus var. covillei F. W. Peirson 1921-7-4 2481 San Bernardino 2 miles east of Phelan, north of Cajon Pass. Comment
  RSA0070643  Cirsium mohavense F. W. Peirson 1924-8-31 5135 San Bernardino Box S Springs, north base of San Bernardino Mountains. 1082 Comment
  RSA0081601  Pyrola aphylla F. W. Peirson 1920-8-23 823 -a San Bernardino South fork of Santa Ana River, San Bernardino Mts., southern California. 1921 Comment
  RSA0083779  Gilia ochroleuca subsp. bizonata Frank W. Peirson 1906-08 920 San Bernardino Icehouse Canyon Divide. San Gabriel Mountains. 2408 Comment
  RSA0117877  Myosurus minimus Frank W. Peirson 1926-5-31 6758 San Bernardino Considerable patches were found along north side of meadow about opposite to the spring; Bluff Lake. 2286 Comment
  RSA0120396  Eriastrum eremicum subsp. eremicum F. W. Peirson 1927-7-10 7352 San Bernardino Several miles west of Mexican Well, eastern borders of San Bernardino Co. 1220 Comment
  RSA0120408  Eriastrum eremicum subsp. eremicum F. W. Peirson 1926-4-27 6684 San Bernardino Near Box S Ranch, 18 miles east of Victorville, Mojave Desert. Comment
  RSA0123331  Eriastrum sapphirinum subsp. brevibracteatum F. W. Peirson 1926-5-29 6735 San Bernardino Deadman Point, east of Victorville. Comment
  RSA65922  Rumex crispus F. W. Peirson 1922-7-21 3211 San Bernardino Near stream, Coldwater- San Antonio Canyon Divide, San Gabriel Mts 2378 Comment
  RSA67356  Polygonum aviculare subsp. aviculare F. W. Peirson 1929-7-11 8462 San Bernardino Fawskin, Bear Valley, San Bernardino Mountains. 2043 Comment
  RSA69238  Phyllodoce breweri F. W. Peirson 1920-8-22 2314 San Bernardino Foxesee Creek [Forsee Creek], San Bernardino Mountains. 2743 Comment
  RSA69709  Mentzelia obscura F. W. Peirson 1932-5-10 9956 San Bernardino 10 miles N of Baker, on road toward Death Valley. 229 Comment
  RSA69925  Apocynum androsaemifolium subsp. pumilum F. W. Peirson 1929-7-11 8473 San Bernardino abudnant on open sandy slopes and among rocks; City Creek Road above Fish Camp. 2073 Comment
  RSA73295  Linanthus pungens F. W. Peirson 1927-6-15 s.n. San Bernardino San Gabriel Mountains: west fork of San Antonio Canyon 2134 Comment
  RSA74499  Phacelia ambigua F. W. Peirson 1935-4-18 11493 San Bernardino At summit of low divide, Whipple Mountains. 457 Comment
  RSA75349  Phacelia calthifolia F. W. Peirson 1928-4-1 7767 San Bernardino Amargosa Wash, 36 miles N of Baker, San Bernardino county. Comment
  RSA77064  Loeseliastrum matthewsii F. W. Peirson 1927-5-7 7283 San Bernardino Several miles east of Kramer. Comment
  RSA77068  Langloisia setosissima subsp. punctata F. W. Peirson 1928-4-1 7761 San Bernardino Bordering the Amargosa Wash, 28 miles north of Baker Comment
  RSA77078  Loeseliastrum schottii F. W. Peirson 1926-4-28 6687 San Bernardino 1 mile below Box S Spring. Comment
  RSA80838  Pedicularis semibarbata F. W. Peirson 1929-5-31 8408 San Bernardino along summit of San Antonio - Coldwater Divide, San Gabriel Mtns., 2439 Comment
  RSA82048  Cordylanthus rigidus subsp. setiger F. W. Peirson 1920-9-16 4488 San Bernardino North (west) Fork of San Antonio Canyon 1982 Comment
  RSA84269  Ranunculus aquatilis var. capillaceus F. W. Peirson 1950-7-7 9027 San Bernardino permanent water hole near Caribou Creek, Holcomb Valley 2256 Comment
  RSA90149  Astragalus lentiginosus var. fremontii F. W. Peirson 1930-4-15 8726 San Bernardino Baker to Las Vegas road at junction with road to Cima. Comment
  RSA90169  Astragalus lentiginosus var. variabilis F. W. Peirson 1917-5-13 580 San Bernardino West of Victorville. Comment
  RSA90684  Gutierrezia microcephala F. W. Peirson 1916-7-8 1216 San Bernardino Box 'S' Springs near north base of San Bernardino Mtns. 1082 Comment
  RSA90955  Erigeron divergens F. W. Peirson 1922-6-25 5294 San Bernardino Near Barton Flats, San Bernardino Mountains. 1982 Comment
  RSA90995  Trifolium wormskioldii F. W. Peirson 1924-9-1 5170 San Bernardino Arrastre Flat, Holcomb Valley, San Bernardino Mts. 2271 Comment
  RSA91138  Trifolium monanthum subsp. grantianum F. W. Peirson 1924-7-3 4070 a San Bernardino San Bernardino Mts, alt 7500ft 2287 Comment
  RSA91157  Lessingia glandulifera var. glandulifera F. W. Peirson 1924-8-31 5099 San Bernardino On road to Phelan N of Cajon Pass, Comment
  RSA91177  Isocoma acradenia F. W. Peirson 1924-8-31 5126 San Bernardino 1 miles W of Box 'S' Ranch, Southern Mojave Desert E of Victorville 915 Comment
  RSA91340  Amorpha californica F. W. Peirson 1924-7-5 4919 San Bernardino Gold Mt. near Baldwin Lake. 2210 Comment
  RSA91720  Gnaphalium thermale F. W. Peirson 1929-10-11 8599 San Bernardino City Creek road, 2-3miles W of Bear Lake Dam, San Bernardino Mts. 2134 Comment
  RSA91748  Muhlenbergia rigens F. W. Peirson 1922-8-27 4325 San Bernardino Barton Flats, San Bernardino Mountains. 1982 Comment
  RSA91778  Ericameria linearifolia F. W. Peirson 1919-4-16 366 San Bernardino lower Cajon Canyon, San Gabriel Mts. 610 Comment
  RSA91967  Elymus elymoides subsp. californicus F. W. Peirson 1918-7-7 1603 San Bernardino Ontario Ridge, eastern San Gabriel Mountains. 2530 Comment
  RSA91973  Elymus elymoides F. W. Peirson 1923-8-24 3979 San Bernardino Summit of Mt. San Gorgonio, San Bernardino Mountains. 3500 Comment
  RSA92106  Cyperus squarrosus F. W. Peirson 1928-9-5 8197 San Bernardino Mojave River in Victorville. Comment
  RSA92124  Carex senta F. W. Peirson 1922-8-23 3276 San Bernardino Dry Lake, San Bernardino Mountains. 2774 Comment
  RSA92128  Eleocharis palustris F. W. Peirson 1930-7-2 8976 San Bernardino North shore of Baldwin Lake, San Bernardino Mountains. 2043 Comment
  RSA92137  Eleocharis rostellata F. W. Peirson 1922-7-7 3175 San Bernardino Ranger's Cabin, Swartout Valley, north side of San Gabriel Mts. 1798 Comment
  RSA92288  Layia glandulosa F. W. Peirson 1917-5-13 1361 San Bernardino West of Victorville, on Palmdale road; Mojave Desert. Comment
  RSA92376  Hymenopappus filifolius var. lugens F. W. Peirson 1916-07 1380 San Bernardino Cushenberry Grade, N slope of San Bernardino Mts. Comment
  RSA92400  Bebbia juncea F. W. Peirson 1930-4-14 8703 San Bernardino About 3 miles north of Cave Spring. Comment
  RSA92647  Salix lasiolepis F. W. Peirson 1923-3-23 4293 San Bernardino River crossing about 4 miles southeast of San Bernardino. Comment
  RSA92895  Hesperocnide tenella F. W. Peirson 1924-5-14 4547 San Bernardino 12 miles east of Victorville. Comment
  RSA92907  Madia elegans subsp. wheeleri F. W. Peirson 1920-8-23 2776 San Bernardino South fork of Santa Ana River, San Bernardino Mts., southern California. 1921 Comment
  RSA93080  Solidago confinis F. W. Peirson 1923-8-30 4025 San Bernardino Northeast part of San Gabriel Range; Clyde Ranch to Lone Pine Canyon. 1494 Comment
  RSA93121  Corethrogyne filaginifolia F. W. Peirson 1929-10-11 8600 San Bernardino City Creek road, 2-3miles W of Bear Lake Dam, San Bernardino Mts. 2134 Comment
  RSA93183  Machaeranthera canescens F. W. Peirson 1924-9-1 5152 San Bernardino Rocky roadside, Johnson Grade, eastern San Bernardino Mts. 1982 Comment
  RSA93289  Corethrogyne filaginifolia F. W. Peirson 1923-8-25 4736 San Bernardino Mill Creek, San Bernardino Mts. 1646 Comment
  RSA93780  Brickellia arguta F. W. Peirson 1930-4-16 8747 San Bernardino 12 mi. N of Goffs on road to Cima, E San Bernardino Co. Comment
  RSA93848  Baileya pleniradiata F. W. Peirson 1916-7-8 1366 San Bernardino Box 'S' Springs near north base of San Bernardino Mtns. 1082 Comment
  RSA93890  Helenium decurrens F. W. Peirson 1922-7-22 244 San Bernardino San Antonio Canyon, San Gabriel Mts 1829 Comment
  RSA94600  Anisocoma acaulis F. W. Peirson 1924-5-14 4608 San Bernardino South side of Cajon Pass. 1220 Comment
  RSA94638  Syntrichopappus fremontii F. W. Peirson 1922-5-12 4243 San Bernardino 22 miles north of Barstow, Comment
  RSA94940  Tetradymia stenolepis F. W. Peirson 1916-7-8 1430 San Bernardino Cushenbury Springs, north base of San Bernardino Mountains. Comment
  RSA94950  Tetradymia canescens F. W. Peirson 1920-9-15 1431 San Bernardino North Fork of Lytle Creek 1829 Comment
  RSA95067  Rafinesquia neomexicana F. W. Peirson 1926-4-27 6675 San Bernardino 20 miles west of Voctorville Comment
  RSA95096  Calycoseris parryi F. W. Peirson 1930-4-14 8706 San Bernardino About 3 miles north of Cave Spring. Comment
  RSA95115  Agoseris heterophylla var. heterophylla F. W. Peirson 1924-7-5 4913 San Bernardino North shore of Baldwin Lake 2037 Comment
  RSA95124  Agoseris grandiflora var. grandiflora F. W. Peirson 1919-6-5 458 San Bernardino Camp Baldy, San Antonio Canyon. 1371 Comment
  RSA95128  Glyptopleura setulosa F. W. Peirson 1926-4-27 6673 San Bernardino Near Llano Comment
  RSA95160  Hieracium horridum F. W. Peirson 1924-8-15 2581 San Bernardino Bluff Lake, San Bernardino Mts. 2287 Comment
  RSA95213  Stephanomeria exigua subsp. exigua F. W. Peirson 1930-5-30 8906 San Bernardino 1 mile north of Llano Comment
  RSA95216  Stephanomeria pauciflora var. pauciflora F. W. Peirson 1920-9-15 2674 San Bernardino North Fork of Lytle Creek 1829 Comment
  UC672188  Erigeron breweri var. breweri Frank W. Peirson 1922-6-22 3100 San Bernardino trail on ridge w of South Fork Santa Anna River; San Bernardino Mts., South Fork Santa Anna River 2255 Comment
  CAS-BOT-BC160545  Camissoniopsis lewisii F. W. Peirson 1923-3-26 3409 San Diego Agua Hedionda Comment
  CAS-BOT-BC175159  Silene verecunda Frank W. Peirson 1924-6-25 4832 San Diego Laguna Lakes Auto Camp, Laguna Mts. Comment
  CAS-BOT-BC226892  Linanthus orcuttii F. W. Peirson 1920-6-24 2173 San Diego East foot of Morgan Hill, Palomar Mts. 1432 Comment
  CAS-BOT-BC327047  Trixis californica Frank W. Peirson 1928-3-24 7745 San Diego San Felipe Creek 2 miles below Sentenac Canyon Comment
  CAS-BOT-BC376037  Stylocline gnaphaloides Frank W. Peirson 1927-4-19 7244 San Diego On headland south of Torrey Pines Comment
  JEPS45739  Linum lewisii Frank W. Peirson 1925-5-19 5995 San Diego Cuyamaca Mountains, near foot of Middle Peak Middle Peak; Cuyamaca Mountains, Middle Peak 1493 Comment
  JEPS54139  Thysanocarpus laciniatus Frank W. Peirson 1925-5-17 5942 San Diego e slope Laguna Mts., Vallecito Canyon Vallecito Canyon; e slope Laguna Mts., Vallecito Canyon Comment
  JEPS5414  Nemacladus longiflorus var. longiflorus Frank W. Peirson 1925-5-15 5900 San Diego 4 mi s Buckman Springs 640 Comment
  LA38962  Mimulus palmeri Frank W. Peirson; 1925-5-15 5919 San Diego Laguna Lakes auto camp, N of camp 1676 Comment
  PASA1064  Lotus argophyllus Frank W. Peirson 1925-5-18 San Diego Cuyamaca Lake Comment
  PASA1668  Lupinus longifolius Frank W. Peirson 1923-3-28 San Diego Vista 106 Comment
  PASA1748  Sidalcea malviflora Frank W. Peirson 1922-4-14 San Diego The Hill Top at Grossmont, 12 miles east of San Diego Comment
  PASA1774  Horsfordia newberryi Frank W. Peirson 1928-3-24 San Diego San Felipe Creek, about 2 miles below the Sentenac Comment
  PASA984  Castilleja foliolosa Frank W. Peirson 1928-4-21 San Diego San Felipe Creek near foot of Sentenac Canyon Comment
  POM175545  Viguiera laciniata F. W. Peirson 1923-3-26 3364 San Diego 4 miles south of San Onofre Comment
  POM184409  Grindelia hirsutula var. hallii F. W. Peirson 1932-9-5 10472 San Diego Cuyamaca Lake at Auto Campgrounds 1433 Comment
  RSA128736  Chaenactis carphoclinia var. peirsonii F. W. Peirson 1927-4-14 7182 San Diego Near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Boulevard. 305 Comment
  RSA368918  Lilaea scilloides F. W. Peirson 1924-6-24 4880 San Diego Cuyamaca Lake. Comment
  RSA398995  Ceanothus verrucosus F. W. Peirson 1928-3-26 734 San Diego Near Torrey Pines Comment
  RSA405742  Lathyrus vestitus subsp. alefeldii F. W. Peirson 1924-6-27 4882 San Diego near summit of Monument Peak, Laguna Mts. Comment
  RSA408350  Collinsia heterophylla F. W. Peirson 1925-5-19 6002 San Diego 1 mile south of Morettis, northern San Diego Co. (south of Henshaw Lake) 930 Comment
Read comments
Sep 28 2007
  RSA427394  Solanum umbelliferum F. W. Peirson 1926-5-1 6720 San Diego Bottom lands of temecula River, Oak grove. 854 Comment
  RSA432490B  Chamaesyce serpillifolia F. W. Peirson 1924-6-22 s.n. San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA65171  Chorizanthe fimbriata var. laciniata F. W. Peirson 1924-6-26 4881 San Diego Lower part of Vallecito Canyon. Comment
  RSA66096  Lyrocarpa coulteri var. palmeri F. W. Peirson 1928-3-24 7749 San Diego San Felipe Creek, 2 miles below Sentenac Canyon, eastern SD county. Comment
  RSA66284  Dendromecon rigida F. W. Peirson 1922-4-14 4174 San Diego Torrey Pines Park near San Diego Comment
  RSA66842  Caulanthus heterophyllus F. W. Peirson 1922-4-4 2911 San Diego Torrey Pines. Comment
  RSA68631  Calochortus splendens Frank W. Peirson 1920-6-24 2203 San Diego Morgan Hill, Palomar Mountains. 1433 Comment
  RSA68987  Plantago patagonica F. W. Peirson 1930-5-11 8778 San Diego near Henshaw Dam. 854 Comment
  RSA68992  Anagallis minima F. W. Peirson 1927-04 7251 San Diego About bushes, along margin of sink, headland S of Torrey Pines Comment
  RSA69500  Mirabilis laevis var. crassifolia F. W. Peirson 1922-4-14 5219 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  RSA69995  Allionia incarnata F. W. Peirson 1924-6-26 4877 San Diego Lower part of Vallecito Canyon. Comment
  RSA70048  Corallorhiza maculata Frank W. Peirson 1920-6-24 1697 San Diego West of summit of Mt. Palomar, [Palomar Mountains]. 1677 Comment
  RSA70058  Juncus bufonius var. occidentalis F. W. Peirson 1923-3-27 3362 San Diego Imperial Beach. Comment
  RSA70255  Nolina bigelovii Frank W. Peirson 1922-4-13 2852 San Diego Mountain Springs, eastern San Diego County. Comment
  RSA70328  Asclepias eriocarpa F. W. Peirson 1924-6-24 4816 San Diego Henshaw Grade, south slope of Palomar Mts. 1524 Comment
  RSA70428  Ditaxis lanceolata F. W. Peirson 1928-4-22 7877 San Diego steep rocky canyon immediately west of the Narrows, San Felipe Creek. Comment
  RSA70880  Arctostaphylos glandulosa subsp. glandulosa F. W. Peirson 1926-5-1 6717 San Diego Along trail from Oak Grove to Palomar Mt. 1524 Comment
  RSA71806  Gilia stellata F. W. Peirson 1928-4-21 7866 San Diego San Felipe Creek near jct. of Grapevine Canyon and foot of Sentenac Canyon. Comment
  RSA73015  Leptosiphon pygmaeus subsp. pygmaeus F. W. Peirson 1925-5-15 5924 San Diego Laguna Lakes, Laguna Mountains 1829 Comment
  RSA73040  Linanthus bigelovii F. W. Peirson 1927-4-17 7231 San Diego Summit of Mt. Springs Grade, eastern San Diego Co. 1067 Comment
  RSA73050  Leptosiphon androsaceus F. W. Peirson 1924-6-24 4817 San Diego Henshaw Grade, south slope of Palomar Mts. 1524 Comment
  RSA73286  Linanthus pungens subsp. hallii F. W. Peirson 1927-4-17 7227 San Diego South of boulevard on Mountain Springs Grade 1128 Comment
  RSA73358  Clarkia rhomboidea F. W. Peirson 1924-6-22 4784 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA74725  Nama demissa var. deserti F. W. Peirson 1922-4-13 985 San Diego Mountain Springs grade east of Jacumba; eastern San Diego. 1067 Comment
  RSA74808  Phacelia parryi F. W. Peirson 1930-5-11 8787 San Diego San Luis Rey River. 610 Comment
  RSA75386  Camissonia cardiophylla F. W. Peirson 1928-4-22 7882 San Diego steep rocky canyon immediately west of the Narrows, San Felipe Creek. Comment
  RSA77074  Langloisia setosissima subsp. setosissima F. W. Peirson 1927-4-14 7187 San Diego Near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Boulevard. 305 Comment
  RSA77166  Ceanothus leucodermis F. W. Peirson 1925-5-17 5950 San Diego Lower part of Vallecito Canyon. Comment
  RSA77711  Ceanothus greggii var. perplexans F. W. Peirson 1928-3-24 7729 San Diego Grade going down into San Felipe Creek 915 Comment
  RSA77712  Ceanothus greggii var. perplexans F. W. Peirson 1929-3-31 8282 San Diego Along central part of Foster Grade east of Julian Comment
  RSA77764  Viola douglasii F. W. Peirson 1925-5-18 5969 San Diego Margins of Cuyamaca Lake. 1402 Comment
  RSA79826  Keckiella antirrhinoides subsp. microphylla F. W. Peirson 1925-5-17 5952 San Diego Vallecito Canyon, eastern San Diego Co. Comment
  RSA80180  Antirrhinum nuttallianum subsp. nuttallianum F. W. Peirson 1912-9-2 1100 San Diego SoladadInlet Comment
  RSA80220  Plagiobothrys collinus var. fulvescens F. W. Peirson 1920-6-24 2732 San Diego Meadow east of Morgan Hill; Palomar Mts 1433 Comment
  RSA80325  Lycium andersonii F. W. Peirson 1927-4-17 7228 San Diego Summit of Mt. Springs Grade, eastern San Diego Co. 1067 Comment
  RSA80442  Mimulus fremontii F. W. Peirson 1925-5-15 5901 San Diego 4 mi. south of Buckman Springs, eastern San Diego Co. Comment
  RSA81008  Tamarix parviflora F. W. Peirson 1923-3-28 4110 San Diego On boulevard about 10-15 miles south opf Temecula Comment
  RSA81466  Castilleja applegatei subsp. martinii F. W. Peirson 1925-5-16 5938 San Diego Monument Peak, Laguna Mts. Comment
  RSA82189  Trichostema parishii F. W. Peirson 1925-5-18 5961 San Diego Lower part of grade from Guatay to Laguna Mountains. Comment
  RSA82222  Verbena menthifolia F. W. Peirson 1923-3-27 3379 San Diego Otay Creek. 2 miles below dam and at about 250 ft. 76 Comment
  RSA82394  Salvia clevelandii F. W. Peirson 1915-6-27 1053 San Diego Torrey Pines. Comment
  RSA82460  Salvia vaseyi F. W. Peirson 1928-4-22 7872 San Diego On canyon slope opposite Yaqui Spring, San Felipe Canyon. Comment
  RSA82565  Stachys rigida subsp. quercetorum F. W. Peirson 1932-9-4 10465 San Diego 7 miles west of Campo. 671 Comment
  RSA83422  Monardella nana subsp. tenuiflora F. W. Peirson 1920-6-24 2177 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA84225  Dudleya variegata F. W. Peirson 1922-4-14 3094 San Diego Slightly south of Torrey Pines Comment
  RSA84839  Ribes nevadense F. W. Peirson 1926-5-1 6714 San Diego Sour Dough Spring, east trail from Palomar Mt. to Oak Grove. Comment
  RSA85064  Adenostoma sparsifolium F. W. Peirson 1932-9-4 10471 San Diego Clearing between Campo and Buckman Springs, southeastern San Diego Co. 671 Comment
  RSA86675  Cercocarpus betuloides F. W. Peirson 1924-6-25 4861 San Diego Top of ridge back of public camp, Laguna Lakes, Laguna Mountains Comment
  RSA86791  Rosa gymnocarpa F. W. Peirson 1924-6-22 4806 San Diego Doane Valley. 1494 Comment
  RSA86800  Rosa californica F. W. Peirson 1925-5-17 s.n. San Diego At foot of steep part of trail from Vallecito Canyon to Laguna Mountains Comment
  RSA86834  Rubus ursinus F. W. Peirson 1924-6-24 4814 San Diego Henshaw Grade, south slope of Palomar Mts. 1524 Comment
  RSA87102  Lupinus bicolor subsp. microphyllus F. W. Peirson 1924-6-5 7 /41 San Diego Meadows at head of Doane Valley, Palomar Mts. 1524 Comment
  SD136473  Sanicula tuberosa F. W. Peirson 1925-5-18 5964 San Diego Cuyamaca Lake, Cuyamaca Mountains 1399 Comment
  SD87560  Linanthus orcuttii Frank W. Peirson 1920-6-24 2173 San Diego Ridge westward from Palomar Peak (IPB 2/06) 1431 Comment
  SD87750  Stebbinsoseris heterocarpa Frank W. Peirson 1927-4-19 7255 San Diego Headland south of Torrey Pines. Comment
  SD87789  Antirrhinum nuttallianum subsp. nuttallianum Frank W. Peirson 1923-3-26 3415 San Diego Agua Hedionda, abundant in low bushes in saline flat back of beach Comment
  SD87870  Collinsia childii F. W. Peirson 1920-6-24 2190 San Diego Palomar, meadow, east foot of Morgan Hill (IPB 10/06) 1430 Comment
  UC501526  Githopsis diffusa subsp. candida Frank W. Peirson 1925-5-19 6003 San Diego 1 mi s Morettis 944 Comment
  UC581529  Viola lobata subsp. lobata Frank W. Peirson 1925-5-19 5996 San Diego Middle Peak; Cuyamaca Mountains, Middle Peak 1676 Comment
  UC672240  Pentachaeta aurea Frank W. Peirson 1925-5-15 5913 San Diego Laguna Lakes Camp Laguna Mts. 1828 Comment
  UCR136630  Sidalcea malviflora F. W. Peirson 1927-4-19 7237 San Diego South Coast, headland south of Torrey Pines 91 Comment
  RSA0017268  Gilia ochroleuca subsp. exilis F. W. Peirson 1929-5-4 8342 San Diego About 5 miles N of Oak Grove. 762 Comment
  RSA0095116  Saltugilia australis F. W. Peirson 1926-5-1 6708 San Diego Along trail from Oak Grove to Palomar Mt. 1524 Comment
  RSA0117463  Collinsia concolor F. W. Peirson 1920-6-24 2191 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA0117474  Collinsia concolor F. W. Peirson 1925-5-12 5818 San Diego Potrero Grade 686 Comment
  RSA128758  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1927-4-18 7233 San Diego About 1/2 way from Newtown to Buckman Sps. Comment
  RSA90162  Astragalus didymocarpus var. dispermus F. W. Peirson 1922-4-13 2876 San Diego Mountain Springs Grade on Hwy between San Diego and El Centro. 1067 Comment
  RSA90639  Astragalus palmeri F. W. Peirson 1925-5-17 5946 San Diego Vallecito Canyon, east slope of Laguna Mts., eastern San Diego county. Lower canyon bordering desert area. Comment
  RSA90854  Carex triquetra F. W. Peirson 1923-3-26 4266 San Diego 0.5 mile north of Encinitas. San Diego County. Comment
  RSA91019  Hoita macrostachya F. W. Peirson 1924-6-26 4878 San Diego Lower part of Vallecito Canyon, eastern San Diego Co. Comment
  RSA91245  Vicia americana F. W. Peirson 1925-5-15 5910 San Diego Laguna Lakes, Laguna Mts., slightly North of public camp Comment
  RSA91315  Lupinus longifolius F. W. Peirson 1923-3-28 3402 San Diego Buena vista Creek near Vista 107 Comment
  RSA91521  Poa secunda F. W. Peirson 1925-5-16 5933 San Diego About 1 mile north of Laguna Lakes camp, Laguna Mouintains. Comment
  RSA92232  Madia minima F. W. Peirson 1925-5-15 5926 San Diego Laguna Lakes, Laguna Mountains Comment
  RSA92382  Psilocarphus brevissimus F. W. Peirson 1924-6-25 4835 San Diego near old Rangers Cabin, Laguna Lakes region, Laguna Mtns. Comment
  RSA92532  Eriophyllum wallacei F. W. Peirson 1925-5-15 5904 San Diego 4 miles south of Buckman Springs. 1220 Comment
  RSA92704  Salix laevigata F. W. Peirson 1925-5-18 5976 San Diego South shore of Cuyamaca Lake. 1402 Comment
  RSA92852  Chaenactis carphoclinia var. peirsonii F. W. Peirson 1927-4-14 7182 San Diego Silent Canyon' near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Blvd 305 Comment
Read comments
Jan 23 2012
  RSA92911  Lasthenia gracilis F. W. Peirson 1925-5-18 5994 San Diego N shore of Cuyamaca Lake, Eastern San Diego County 1433 Comment
  RSA92912  Lasthenia gracilis F. W. Peirson 1922-4-13 2884 San Diego Mountain Springs grade east of Jacumba; eastern San Diego 1067 Comment
  RSA93035  Grindelia hirsutula var. hallii F. W. Peirson 1924-6-24 4825 San Diego Dam at Cuyamaca Lake 1402 Comment
  RSA93282  Pentachaeta aurea F. W. Peirson 1925-5-15 5913 San Diego Laguna Lakes, Laguna Mts 1524 Comment
  RSA93331  Downingia cuspidata F. W. Peirson 1923-3-28 3394 San Diego Mesa about 6 miles North of San Diego. 122 Comment
  RSA93925  Dicoria canescens F. W. Peirson 1938-11-12 12637 San Diego San Felipe Canyon just above the Narrows, eastern San Diego County Comment
  RSA94666  Senecio douglasii var. monoensis F. W. Peirson 1925-5-15 5894 San Diego 3 miles northwest of Jacumba, eastern San Diego County Comment
  RSA95205  Microseris heterocarpa F. W. Peirson 1927-4-19 7255 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA95284  Rhamnus tomentella subsp. tomentella F. W. Peirson 1924-6-22 4795 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA95300  Hibiscus denudatus F. W. Peirson 1928-3-24 7734 San Diego San Felipe Creek, Sentenac Canyon, eastern San Diego Co. Comment
  RSA95376  Sidalcea malviflora subsp. sparsifolia F. W. Peirson 1924-6-25 4847 San Diego 0.5 mile above camp at Laguna Lakes, Laguna Mts. 1677 Comment
  RSA95393  Ceanothus verrucosus F. W. Peirson 734 San Diego Torrey Pines, coast of San Diego Comment
  RSA97417  Tauschia parishii F. W. Peirson 1926-5-1 6710 San Diego open places about the summit of Palomar Mountain. Comment
  RSA93256  Ericameria ericoides var. ericoides F. W. Peirson 1925-9-13 6431 San Francisco Back from small lake, Golden Gate Park, San Francisco Comment
  CAS-BOT-BC177824  Astragalus curtipes Frank W. Peirson 1925-3-25 5675 San Luis Obispo Morro Creek 152 Comment
  RSA82985  Stachys bullata F. W. Peirson 1925-3-25 5676 San Luis Obispo Morro Creek. 152 Comment
  RSA83355  Monardella crispa F. W. Peirson 1920-7-29 2226 San Luis Obispo 1 mile south of Pismo Beach. Comment
  RSA85068  Castilleja miniata F. W. Peirson 1932-7-4 10240 San Luis Obispo Oceano. Comment
  RSA85802  Potentilla anserina var. grandis F. W. Peirson 1920-7-29 1983 San Luis Obispo 1 mile south of Pismo, on sand dunes. Comment
  RSA86787  Lolium perenne subsp. multiflorum F. W. Peirson 1932-7-4 s.n. San Luis Obispo Oceano. Comment
  RSA64597  Eriogonum parvifolium var. parvifolium F. W. Peirson 1920-7-30 2323 San Luis Obispo Near Willow Creek, Morro region Comment
  RSA68991  Plantago subnuda F. W. Peirson 1920-7-28 2239 San Luis Obispo 1 mile S of Pismo Beach, Comment
  RSA80827  Frankenia salina F. W. Peirson 1920-7-29 2073 San Luis Obispo One mile south of Pismo Beach. Comment
  RSA91058  Trifolium depauperatum var. truncatum F. W. Peirson 1925-3-25 5667 San Luis Obispo On Morro Creek Divide. 427 Comment
  RSA91494  Scirpus microcarpus F. W. Peirson 1920-7-30 2236 San Luis Obispo Near sea level, Toro Creek, Morro Region 0 Comment
  RSA97380  Lomatium parvifolium F. W. Peirson 1925-3-25 5671 San Luis Obispo Morro Creek 152 Comment
  POM87046  Baccharis pilularis F. W. Peirson 1925-9-13 6425 San Mateo Rockaway beach. Comment
  RSA76963  Oxalis pes-caprae Mabel Peirson 1926-2-24 8218 San Mateo South of Colma Comment
  RSA0028485  Geranium dissectum Mabel Peirson 1926-2-24 6518 San Mateo Moss Beach. Comment
  RSA90716  Astragalus nuttallii F. W. Peirson 1925-9-13 6424 San Mateo Rockaway Beach Comment
  RSA93165  Baccharis pilularis F. W. Peirson 1925-9-13 6425 San Mateo Rockaway beach. Comment
  RSA94535  Artemisia californica F. W. Peirson 1925-9-13 6429 San Mateo Rockaway beach. Comment
  CAS-BOT-BC101645  Myrica californica Frank W. Peirson 1938-4-13 12385 Santa Barbara Bear Creek, about 2 miles south of Surf and this station about 1/2 mile up stream Comment
  CAS-BOT-BC139927  Adenostoma fasciculatum Mabel B. Peirson; F. W. Peirson 1927-4-14 7144 Santa Barbara On terrace 100 ft. above sea and about 1 mile w. of pier, Prisoners' Cove, Santa Cruz Island Comment
  CAS-BOT-BC196211  Lupinus albifrons var. douglasii Frank W. Peirson 1929-5-18 8382 Santa Barbara Miguelito Park, 4 miles s. of Lompoc 121 Comment
  CAS-BOT-BC339109  Lasthenia californica Frank W. Peirson 1929-4-20 8309 Santa Barbara Surf Comment
  JEPS1263  Pholistoma racemosum Mabel Peirson Apr 12 1927-Apr 14 1927 Santa Barbara Santa Cruz Island, Prisoner's Cove Prisoner's Cove; Santa Cruz Island, Prisoner's Cove Comment
  JEPS20064  Hesperomecon linearis Frank W. Peirson 1929-4-20 8319 Santa Barbara 2 miles from Surf on the Lompoc Road Comment
  JEPS44778  Adenostoma fasciculatum Mabel Peirson Apr 12 1927-Apr 14 1927 Santa Barbara Santa Cruz Isl., Prisoner's Cove Comment
  JEPS49534  Arctostaphylos insularis Frank W. Peirson 1934-3-25 11041 Santa Barbara summit of ridge w Fry's Harbor (Santa Cruz Island); , w of Fry's Harbor 182 Comment
  JEPS55887  Acmispon dendroideus var. dendroideus Mabel Peirson Apr 12 1927-Apr 14 1927 Santa Barbara Lady's Harbor; Santa Cruz Island Comment
  PASA1603  Meconella linearis Frank W. Peirson 1929-4-20 Santa Barbara Near Surf. Near sea level Comment
  PASA2288  Gnaphalium bicolor Frank W. Peirson 1929-4-20 Santa Barbara Surf Comment
  RSA65273  Chorizanthe wheeleri Mabel Peirson 1927-4-14 7152 Santa Barbara Santa Cruz Island. About Prisoner's Cove. Comment
  RSA66239  Platystemon californicus F. W. Peirson 1934-3-27 11070 Santa Barbara Santa Cruz Island. Along ridge west of canyon of Frye's Harbor. 457 Comment
  RSA66532  Athysanus pusillus F. W. Peirson 1934-3-27 11071 Santa Barbara Above Frye s Harbor, Santa Cruz Island 366 Comment
  RSA69223  Comarostaphylis diversifolia subsp. planifolia F. W. Peirson 1934-3-29 11093 Santa Barbara Santa Cruz Island. Fry's Creek, at Frys Harbor. Comment
  RSA70311  Juncus xiphioides F. W. Peirson 1920-7-28 2214 Santa Barbara Canada del Refugio, at sea level. 0 Comment
  RSA76036  Pholistoma racemosum F. W. Peirson 1934-3-26 11056 Santa Barbara Santa Cruz Island. Frye's Harbor. Comment
  RSA82100  Mimulus aurantiacus var. pubescens F. W. Peirson 1934-3-29 11090 Santa Barbara Santa Cruz Island. Frye's Creek, a mile or more inland. Comment
  RSA84364  Lithophragma cymbalaria F. W. Peirson 1934-3-26 11057 Santa Barbara Santa Cruz Island. East slope of canyon, Frye s Harbor. 122 Comment
  RSA87341  Muhlenbergia microsperma F. W. Peirson 1934-3-26 11060 Santa Barbara Santa Cruz Island. Frye's Harbor. Comment
  RSA87442  Muhlenbergia microsperma F. W. Peirson 1925-3-27 5724 Santa Barbara Hills back of Santa Barbara Comment
  SBBG54304  Adiantum capillus-veneris F. W. Peirson 1934-3-29 11089 Santa Barbara streamlet on open headlands W of Frys Harbor Comment
  UC599193  Cryptantha leiocarpa Frank W. Peirson 1938-4-13 Santa Barbara Surf Comment
  UCR136643  Agrostis viridis F. W. Peirson 1929-4-20 8292 Santa Barbara Central Coast, El Capitan Auto Camp 3 Comment
  UCR143143  Myrica californica F. W. Peirson 1938-4-13 12385 Santa Barbara Central Coast, Bear Creek, about 2 miles south of Surf and station 0.5 mile up stream 61 Comment
  UCR19817  Ranunculus californicus F. W. Peirson 1929-4-20 s.n. Santa Barbara Central Coast, 2 mi from Surf on the Lompoc Rd. 12 Comment
  PASA1012  Collinsia bicolor Frank W. Peirson 1929-5-18 Santa Barbara Miguelito Park, 4 miles south of Lompoc 121 Comment
  RSA0025768  Abronia latifolia F. W. Peirson 1929-4-20 8323 Santa Barbara Surf. Comment
  RSA447394  Stachys bullata F. W. Peirson 1929-5-17 8366 Santa Barbara Lompoc road 1 mile east of Surf. Comment
  RSA66115  Cardamine californica var. integrifolia F. W. Peirson 1929-4-20 8327 Santa Barbara 2-3 miles west of Las Cruces Bench Mark 283 Comment
  RSA69409  Delphinium parryi subsp. blochmaniae F. W. Peirson 1929-5-18 8389 Santa Barbara 10 miles east of Lompoc on road to Buellton. 152 Comment
  RSA75692  Camissonia campestris subsp. campestris F. W. Peirson 1929-5-18 8397 Santa Barbara Cuyama Valley Road, 17 miles east of Coast Boulevard. Comment
  RSA80310  Orthocarpus densiflorus F. W. Peirson 1929-5-18 8390 Santa Barbara 10 miles east of Lompoc on road to Buellton. 152 Comment
  RSA90273  Polypogon viridis F. W. Peirson 1929-4-20 8292 Santa Barbara El Capitan on coast of Santa Barbara County. West of Goleta. Comment
  RSA90296  Lotus grandiflorus F. W. Peirson 1934-3-25 11035 Santa Barbara Santa Cruz Island. Summit of ridge west of Frye's Harbor Canyon 244 Comment
  RSA90335  Lotus scoparius F. W. Peirson 1929-5-17 8369 Santa Barbara Seaward face of sand dunes, flat ground near railroad track, Surf. Comment
  RSA91328  Lupinus arboreus F. W. Peirson 1929-5-18 8367 Santa Barbara Surf Comment
  RSA91350  Lupinus arboreus F. W. Peirson 1929-4-20 8302 Santa Barbara La Purissima Mission, north of Lompoc. Comment
  RSA92476  Coreopsis gigantea F. W. Peirson 1929-4-20 8322 Santa Barbara Surf. Comment
  RSA92685  Eriophyllum confertiflorum F. W. Peirson 1925-3-26 5700 Santa Barbara Cebada Canyon. 183 Comment
  RSA92871  Urtica urens F. W. Peirson 1934-3-27 11074 Santa Barbara Santa Cruz Island. Along ridge west of canyon of Frye's Harbor. 457 Comment
  RSA92919  Lasthenia gracilis Mabel Peirson 1927-4-14 7145 Santa Barbara Santa Cruz Island. Prisoners Cove. Comment
  RSA69811  Centaurium davyi F. W. Peirson 1925-8-4 6333 Santa Cruz About one mile from Boulder, along San Lorenzo River. Comment
  RSA70275  Juncus oxymeris F. W. Peirson 1925-8-4 6334 Santa Cruz Santa Cruz County; along San Lorenzo River, 1 mile from Boulder Comment
  RSA77707  Ceanothus papillosus F. W. Peirson 1912-6-28 737 Santa Cruz Santa Cruz Mts Comment
  RSA77748  Viola ocellata F. W. Peirson 1912-6-29 743 Santa Cruz Santa Cruz Mts. Comment
  RSA86939  Lithocarpus densiflorus var. densiflorus F. W. Peirson 1912-6-28 1711 Santa Cruz Santa Cruz. Comment
  SD87533  Baccharis glutinosa Frank W. Peirson 1925-8-4 6327 Santa Cruz Santa Cruz Mountains, Boulder region, near San Lorenzo River Comment
  UCR66596  Navarretia squarrosa F. W. Peirson 1925-8-3 6331 Santa Cruz San Lorenzo River, about 1 mile from Boulder Comment
  POM47640  Lathyrus torreyi F. W. Peirson 1923-6-29 3628 Santa Cruz Santa Cruz Mts. Comment
  RSA69527  Clintonia andrewsiana Frank W. Peirson 1912-6-29 1671 Santa Cruz State Park, Santa Cruz. Comment
  RSA90285  Lathyrus vestitus subsp. vestitus F. W. Peirson 1912-6-29 2010 Santa Cruz State Park, Santa Cruz. Comment
  RSA91764  Adenocaulon bicolor F. W. Peirson 1925-8-4 6326 Santa Cruz 1 mile from Boulder Comment
  RSA92851  Madia madioides F. W. Peirson 1925-8-4 6329 Santa Cruz San Lorenzo River about 1 mile from Boulder. Comment
  RSA92886  Populus fremontii subsp. fremontii F. W. Peirson 1912-6-28 s.n. Santa Cruz Santa Cruz. Comment
  RSA99377  Lonicera hispidula var. vacillans F. W. Peirson 1912-6-29 4503 Santa Cruz State Park, Santa Cruz. Comment
  SEINET10484477  Lotus scoparius var. dendroideus Frank W. Peirson 1934-3-26 Peirson 11052 Santa Cruz On steep side wall of lower canyon. Plant not especially abundant and often not In bloom. Frys harbor. Comment
  NY590187  Penstemon davidsonii var. davidsonii F. W. Peirson 1932-7-15 10217 Shasta On east slope of Mount Magee; 1000-Lake Basin 2286.0 Comment
  PASA1592  Phyllodoce breweri Frank W. Peirson 1932-7-15 Shasta 1000-Lake Basin 2194 Comment
  POM203545  Cynoglossum occidentale F. W. Peirson 1932-7-10 10207 Shasta Margin of Lake Eiler, Thousand-Lake Basin. 1951 Comment
  RSA65032  Silene occidentalis F. W. Peirson 1932-7-16 10307 Shasta Burney Spring. 1433 Comment
  RSA70064  Juncus parryi F. W. Peirson 1932-7-12 10121 Shasta In crater of Red Crater Hill; Thousand-Lake Basin. 1951 Comment
  RSA70283  Juncus nevadensis F. W. Peirson 1932-7-14 10119 Shasta Shores of Lake Eiler, Thousand-Lake Basin. 1951 Comment
  RSA70424  Polygala cornuta var. cornuta F. W. Peirson 1932-7-17 10331 Shasta Wallace Ranch. Goose Valley. 915 Comment
  RSA79843  Penstemon davidsonii subsp. davidsonii F. W. Peirson 1932-7-15 10217 Shasta On east slope of Mt. Magee, Thousand-Lake Basin. 2287 Comment
  RSA85249  Spiraea douglasii F. W. Peirson 1932-7-10 10162 Shasta Thousand-Lake Basin. 1951 Comment
  RSA86691  Leymus triticoides F. W. Peirson 1932-7-9 10269 Shasta in a pasture at Burney Spring 1433 Comment
  RSA87461  Melica bulbosa var. inflata F. W. Peirson 1932-7-9 10267 Shasta Burney Spring. 1433 Comment
  RSA87471  Lupinus obtusilobus F. W. Peirson 1926-6-23 6845 Shasta Trail to summit of Lassen Peak, Lassen National Park. Comment
  SD87768  Lonicera conjugialis Frank W. Peirson 1932-7-12 10223 Shasta One Thousand Lake Basin; along the shore of Lake Eiler. 1950 Comment
  UC501435  Stachys ajugoides var. ajugoides Frank W. Peirson 1932-7-17 10319 Shasta Wallace Ranch Goose Valley 914 Comment
  UC501553  Collinsia torreyi var. latifolia Frank W. Peirson 1932-7-9 10295 Shasta Burney Spring 1432 Comment
  UC501563  Koeleria macrantha Frank W. Peirson 1932-7-9 10266 Shasta Burney Spring 1432 Comment
  UC501577  Trifolium kingii var. productum Frank W. Peirson 1932-7-13 10177 Shasta s Burney (1000-Lake Basin) 1950 Comment
  UC501585  Horkelia tridentata subsp. tridentata Frank W. Peirson 1932-7-9 Shasta Burney Spring 1432 Comment
  UC501605  Boechera platysperma Frank W. Peirson 1932-7-10 10153 Shasta s of Burney; 1000-Lake Basin 1950 Comment
  UC501616  Calochortus nudus Frank W. Peirson 1932-7-12 10130 Shasta s of Burney; 1000-Lake Basin 1950 Comment
  CAS-BOT-BC115053  Carex vesicaria Frank Warrington Peirson 1932-7-10 10116 Shasta Margina of Lake Eiler, 1000-Lake Basin 1950 Comment
  POM203542  Hesperolinon micranthum F. W. Peirson 1932-7-16 s.n. Shasta Burney Spring 1433 Comment
  POM272508  Arabis suffrutescens F. W. Peirson 1932-7-11 s.n. Shasta Forest floor of the interlake region, Thousand Lake Basin. 1951 Comment
  POM272622  Arabis platysperma var. howellii F. W. Peirson 1932-7-10 10153 Shasta 1000-Lake Basin (south of Burney). 1951 Comment
  RSA0020913  Ribes viscosissimum F. W. Peirson 1932-7-10 10158 Shasta Thousand-Lake Basin. 1951 Comment
  RSA65858  Polygonum minimum F. W. Peirson 1932-7-14 10138 Shasta Thousand Lake Basin. 1951 Comment
  RSA65955  Eriogonum umbellatum var. polyanthum F. W. Peirson 1932-7-16 10303 Shasta 1 mi. above Burney Spring, on road to Thousand- Lake Basin. 1463 Comment
  RSA69405  Delphinium nuttallianum F. W. Peirson 1926-6-22 6820 Shasta Trail to Devils Kitchen, Drakesbad, Lassen National Park Comment
  RSA69504  Luzula comosa var. laxa F. W. Peirson 1932-7-12 10124 Shasta Thousand-Lake Basin. 1951 Comment
  RSA69631  Juncus mexicanus F. W. Peirson 1932-7-10 10120 Shasta Thousand-Lake Basin. 1951 Comment
  RSA69713  Mentzelia dispersa F. W. Peirson 1932-7-14 10186 Shasta On slope near south end of Lake Eiler, Thousand-Lake Basin. 1951 Comment
  RSA70360  Cycladenia humilis F. W. Peirson 1932-7-12 s.n. Shasta Thousand Lake Basin 2012 Comment
  RSA77498  Angelica californica F. W. Peirson 1932-7-17 10334 Shasta moist shaded places, Wallace Ranch, Goose Velley. 915 Comment
  RSA77744  Viola purpurea subsp. integrifolia F. W. Peirson 1932-7-15 10185 Shasta Along stream from Mt Magee, Thousand-Lake Basin. 2134 Comment
  RSA78645  Chimaphila menziesii F. W. Peirson 1932-7-14 13547 Shasta 1000-Lake Basin 1951 Comment
  RSA79465  Collinsia torreyi F. W. Peirson 1932-7-12 10209 Shasta Along rim of Red Crater. Thousand Lake Basin. Sierra Nevada. 2012 Comment
  RSA79873  Penstemon speciosus F. W. Peirson 1932-7-9 10294 Shasta Burney Spring. 1433 Comment
  RSA82340  Scutellaria californica F. W. Peirson 1932-7-9 10283 Shasta Burney Spring. 1433 Comment
  RSA84407  Ranunculus alismifolius var. alismellus F. W. Peirson 1926-6-23 6842 Shasta Trail to summit of Lassen Peak, Lassen National Park Comment
  RSA85744  Potentilla flabellifolia F. W. Peirson 1926-6-23 6830 Shasta Trail to summit of Lassen Peak, Lassen National Park. Comment
  RSA85764  Sibbaldia procumbens F. W. Peirson 1932-7-15 10168 Shasta On E slope of Mt. Magee. Thousand Lake Basin. 2195 Comment
  RSA87212  Lupinus angustiflorus F. W. Peirson 1932-7-11 10175 Shasta Thousand-Lake Basin. 1951 Comment
  RSA87418  Lupinus polyphyllus subsp. polyphyllus F. W. Peirson 1932-7-17 10324 Shasta Wallace Ranch, Goose Valley. Comment
  RSA88674  Carex lenticularis var. lipocarpa F. W. Peirson 1932-7-12 10118 Shasta N slope of Red Crater. Thousand Lake Basin. 1982 Comment
  RSA91054  Carex multicostata F. W. Peirson 1932-7-12 10110 Shasta Thousand-Lake Basin. 1951 Comment
  RSA91575  Trifolium productum F. W. Peirson 1932-7-13 10177 Shasta Thousand Lake Basin Comment
  RSA91648  Carex vesicaria F. W. Peirson 1932-7-10 10116 Shasta Margin of Lake Eiler, Thousand-Lake Basin. 1951 Comment
  RSA91668  Achnatherum occidentale subsp. californicum F. W. Peirson 1932-7-9 10265 Shasta Below Burney Spring 1433 Comment
  RSA92085  Eleocharis acicularis var. acicularis F. W. Peirson 1932-7-16 10108 Shasta Near camp at Thousand-Lakes Basin 1951 Comment
  RSA94623  Whitneya dealbata F. W. Peirson 1926-6-23 6833 Shasta Trail to summit of Lassen Peak, Lassen National Park Comment
  RSA99347  Sambucus microbotrys F. W. Peirson 1932-7-14 10227 Shasta Eiler Butte, Thousand-Lake Basin 1951 Comment
  SD87881  Trifolium kingii Frank W. Peirson 1932-7-13 10177 Shasta 1000 lake basin, south of Burney 1951 Comment
  SEINET10972517  Heterocodon rariflorum Frank W. Peirson 1932-7-17 Peirson 10332 Shasta WET PLACES AT BORDER OF MARSHY FIELD, WALLACE R., GOOSE VALLEY Comment
  RSA82350  Scutellaria nana F. W. Peirson 1923-7-19 3826 Siskiyou 20 miles north of Bray. Comment
  UC566809  Pteryxia terebinthina var. californica Frank W. Peirson 1923-7-19 3951 Siskiyou Whitney Cr.foot of Mt Shasta Comment
  RSA72212  Camissonia tanacetifolia subsp. tanacetifolia F. W. Peirson 1923-7-19 3794 Siskiyou Open tableland north of Bray Comment
  RSA77044  Iliamna latibracteata F. W. Peirson 1923-7-17 3772 Siskiyou Whitney Creek, foot of Mt. Shasta Comment
  RSA80775  Nicotiana attenuata F. W. Peirson 1923-7-19 3837 Siskiyou 20 miles north of Bray. Comment
  RSA90921  Erigeron foliosus var. confinis F. W. Peirson 1926-7-11 7024 Siskiyou High mountain ridge, summit of grade west of Etna or Etna Mills 1982 Comment
  RSA93122  Erigeron inornatus var. inornatus F. W. Peirson 1923-7-20 3876 Siskiyou 2 miles below camp on Whitney Creek, Mt. Shasta. Comment
  RSA93191  Erigeron elegantulus F. W. Peirson 1923-7-19 3873 Siskiyou 17 miles north of Bray Comment
  RSA93332  Kelloggia galioides F. W. Peirson 1923-7-19 4501 Siskiyou 16 miles S of Bray. Comment
  RSA94103  Luina hypoleuca F. W. Peirson 1926-7-10 7021 Siskiyou Mountain Range west of Yreka. 1524 Comment
  POM87103  Euthamia occidentalis F. W. Peirson 1925-9-26 6440 Solano Suisun Marshes Comment
  RSA80779  Grindelia stricta var. angustifolia F. W. Peirson 1925-9-26 6439 Solano Suisun Marshes. Comment
  SD87682  Phragmites australis subsp. americanus Frank W. Peirson 1925-9-26 6438 Solano Suisun Marshes, shallow water Comment
  CAS-BOT-BC90485  Artemisia douglasiana F. W. Peirson 1925-8-8 6342 Sonoma roadside, 6 miles south of Santa Rosa Comment
  RSA70138  Triteleia laxa F. W. Peirson, Mabel Peirson 1926-4-1 6547 Sonoma 6 miles south of Cloverdale. Comment
  JEPS50300  Viola lobata subsp. lobata Frank W. Peirson 1936-5-30 11823 Tulare Balch Park, along wood road Balch Park 1920 Comment
  JEPS9041  Mimulus geniculatus Frank W. Peirson 1925-3-21 5561 Tulare near Lindsay; Lewis Creek 213 Comment
  LA38979  Mimulus leptaleus Frank W. Peirson; 1919-8-17 1145 Tulare Patee Meadow 2743 Comment
  POM17784  Triglochin palustris F. W. Peirson 1919-8-12 1541 Tulare Rattlesnake Creek, tributary of Kern River 2744 Comment
Read comments
Mar 1 2011
  RSA65016  Silene menziesii subsp. dorrii F. W. Peirson 1908-7-20 611 Tulare Junction Meadow, Kern River Canyon 2439 Comment
  RSA65031  Silene sargentii F. W. Peirson 616 Tulare Cottonwood Creek and Siberian Outpost, south Sierra Nevada. Comment
  RSA66073  Barbarea orthoceras F. W. Peirson 1908-7-23 s.n. Tulare In or near Hockett meadow, Sequoia National Park. Comment
  RSA66696  Dicentra nevadensis F. W. Peirson 1908-7-23 1891 Tulare South Fork of Kaweah River Comment
  RSA66852  Streptanthus tortuosus F. W. Peirson 1919-8-17 670 Tulare Pattee Meadow, Sierra Nevada. 2835 Comment
  RSA69013  Primula suffrutescens F. W. Peirson 1908-7-15 852 Tulare Rock Creek Cirque. Comment
  RSA69031  Dodecatheon alpinum F. W. Peirson 1908-7-15 860 -a Tulare Rock Creek Cirque. Comment
  RSA69431  Swertia perennis F. W. Peirson 1916-8-22 876 Tulare Big Arroyo, Sierra Nevada. Comment
  RSA69613  Lilaea scilloides F. W. Peirson 1925-3-22 5604 Tulare About 4 miles below Springville. 244 Comment
  RSA69848  Platanthera leucostachys Frank W. Peirson 1908-7-13 s.n. Tulare Volcano Creek, Sierra Nevada Comment
  RSA70044  Corallorhiza maculata Frank W. Peirson 1908-7-11 1696 Tulare Little Kern, Sierra Nevada Comment
  RSA70299  Juncus nevadensis F. W. Peirson 1919-8-8 1638 Tulare Twin Lake Cirque, Mt. Whitney Region. 3506 Comment
  RSA72342  Epilobium canum subsp. latifolium F. W. Peirson 1916-8-22 757 Tulare Big Arroyo, Sierra Nevada 2439 Comment
  RSA72351  Epilobium canum subsp. latifolium F. W. Peirson 1908-7-11 760 Tulare Probably near ford on Trout Mt. Trail, Little Kern, Sierra Nevada Comment
  RSA79445  Collinsia bartsiifolia var. bartsiifolia F. W. Peirson 1925-3-20 5551 Tulare 4 miles south of Porterville. Comment
  RSA79863  Keckiella rothrockii F. W. Peirson 1908-7-19 1120 Tulare Upper Kern Canyon, Sierra Nevada. Comment
  RSA79935  Cryptantha nubigena F. W. Peirson 1916-8-20 1032 Tulare Kaweah Peaks. 3659 Comment
  RSA80087  Mimulus tricolor F. W. Peirson 1925-3-21 5601 Tulare About 3 miles south of Lindsay. Comment
  RSA80211  Plagiobothrys greenei F. W. Peirson 1911-8-9 1028 Tulare Whitney Meadows, Sierra Nevada 3049 Comment
  RSA80395  Eryngium spinosepalum F. W. Peirson 1908-7-9 1205 Tulare Tule River Comment
  RSA80452  Mimulus moschatus var. longiflorus F. W. Peirson 1908-7-19 1737 Tulare Junction Meadow, Kern River Canyon, Sierra Nevada. 2439 Comment
  RSA84490  Actaea rubra subsp. arguta F. W. Peirson 1908-7-13 1880 Tulare Volcano Creek, tributary to Kern River. 2439 Comment
  RSA85930  Isoetes nuttallii F. W. Peirson 1925-3-22 5603 Tulare About 4 miles below Springville. 244 Comment
  RSA87236  Lupinus culbertsonii subsp. hypolasius F. W. Peirson 1908-7-13 527 Tulare Volcano Creek, Sierra Nevada. Comment
  RSA87391  Lupinus lyallii var. lyallii F. W. Peirson 1908-7-11 536 Tulare Little Kern River. 1753 Comment
  UC1083164  Hornungia procumbens Frank W. Peirson 1925-3-21 5577 Tulare near Lindsay (Lewis Creek); Lewis Creek 213 Comment
  UC908920  Gilia tricolor subsp. diffusa Frank W. Peirson 1925-3-21 5565 Tulare near Lindsay (Lewis Creek); , near Lindsay 213 Comment
  UCD91783  Poa secunda subsp. secunda F. W. Peirson 1925-3-20 5549 Tulare Between Ducor and Terrabella. Comment
  CAS-BOT-BC290492  Crepis acuminata Frank W. Peirson 1919-8-13 1437 Tulare Mineral King 2407 Comment
  CAS-BOT-BC458200  Pleuricospora fimbriolata F. W. Peirson 1911-8-17 s.n. Tulare Giant Forest, Sierra Nevada 1981 Comment
  CAS-BOT-BC515675  Prosartes hookeri Frank W. Peirson 1936-5-30 11824 Tulare Balch Park 1920 Comment
  CAS-BOT-BC77771  Woodsia scopulina Frank W. Peirson 1921-8-18 2837 Tulare Taboose Pass, Sierra Nevada 3200 Comment
  RSA0001501  Pseudobahia peirsonii F. W. Peirson 1925-3-20 5550 Tulare Between Ducor and Terrebella. Comment
  RSA0024569  Ribes quercetorum F. W. Peirson 1925-3-21 5598 Tulare Rocky side canyon, Lewis Creek near Lindsay. 290 Comment
  RSA0039342  Thysanocarpus curvipes var. curvipes Frank W. Peirson 1925-3-21 5591 Tulare Slope on Lewis Creek near Lindsay. 289 Comment
  RSA0057560  Thysanocarpus curvipes subsp. curvipes Frank W. Peirson 1925-3-21 5591 Tulare Lewis Creek, near Lindsay. 274 Comment
  RSA402018A  Orthocarpus erianthus F. W. Peirson 1925-3-21 14991 Tulare Lewis Creek near Lindsay. Comment
  RSA416310  Achyrachaena mollis F. W. Peirson 1925-3-21 5587 Tulare Lewis Creek near Lindsay. 274 Comment
  RSA70565  Vaccinium cespitosum F. W. Peirson 1908-7-23 836 Tulare North Fork of the Middle Fork of the Tule river, Sierra Nevada. Comment
  RSA71118  Calystegia malacophylla F. W. Peirson 1919-8-15 895 Tulare Trail from Redwood Meadow to Giant Forest, Sierra Nevada Comment
  RSA72021  Polemonium californicum F. W. Peirson 1919-8-18 903 Tulare Rowell Meadows, Sierra Nevada 2683 Comment
  RSA72219  Clarkia heterandra F. W. Peirson 1936-5-30 11818 Tulare Road to Balch Park, at water tank, about 4 miles above Control 1067 Comment
  RSA77835  Hackelia mundula F. W. Peirson 1916-8-27 1011 Tulare Trail north of Quinns Horse Camp, Sierra Nevada. 2591 Comment
  RSA80278  Orthocarpus lacerus F. W. Peirson 1911-8-14 1165 Tulare Rattlesnake Creek, Sierra Nevada. Comment
Read comments
Jan 30 2016
  RSA80691  Boisduvalia densiflora var. densiflora F. W. Peirson 1908-7-9 2081 Tulare Tule River, Sierra Nevada. Comment
  RSA80721  Mimulus pilosus F. W. Peirson 1911-8-14 709 Tulare Rattlesnake Creek, Sierra Nevada. Comment
  RSA80791  Pedicularis groenlandica F. W. Peirson 1908-7-10 1171 Tulare Tule River near Nelson, Sierra Nevada. Comment
  RSA82529  Verbascum thapsus F. W. Peirson 1916-8-12 1098 Tulare Tule River not far below Nelson. Sierra Nevada. Comment
  RSA83399  Monardella lanceolata var. lanceolata F. W. Peirson 1908-7-10 1074 Tulare Tule River near Nelson Comment
  RSA83410  Monardella sheltonii F. W. Peirson 1919-8-17 1073 Tulare Pattee Meadow Comment
  RSA84279  Ranunculus alismifolius var. alismellus F. W. Peirson 1876 Tulare Sequoia National Park, Sierra Nevada. Comment
  RSA84525  Jamesia americana var. rosea F. W. Peirson 1911-8-5 s.n. Tulare Lady Franklin Pass Comment
  RSA85813  Ivesia santolinoides F. W. Peirson 1908-7-10 1984 Tulare Tule River. Comment
  RSA87099  Lupinus bicolor subsp. microphyllus F. W. Peirson 1926-3-28 6642 Tulare Kings River at main north and south boulevard. Comment
  RSA91078  Trifolium depauperatum var. truncatum F. W. Peirson 1925-3-22 5607 Tulare About 4 miles below Springville. 244 Comment
  RSA92681  Eriophyllum lanatum var. croceum F. W. Peirson 1908-7-9 1389 Tulare Tule River near 'The Forks,' below Nelson 762 Comment
  RSA92859  Chaenactis alpigena F. W. Peirson 1916-8-26 1400 a Tulare Silver Lake, Sierra Nevada 3201 Comment
  RSA93266  Erigeron lonchophyllus F. W. Peirson 1908-7-13 1274 Tulare Volcano Creek, Sierra Nevada. Comment
  RSA93868  Dugaldia hoopesii F. W. Peirson 1908-7-13 1410 Tulare Volcano Creek, Sierra Nevada. Comment
  RSA93941  Artemisia dracunculus F. W. Peirson 1919-8-13 1449 Tulare Trail from Silver lakes to mineral King, Sierra Nevada 2591 Comment
  RSA95085  Microseris campestris F. W. Peirson 1925-3-21 5552 Tulare Lewis Creek, near Lindsay. 213 Comment
  CAS-BOT-BC153702  Diplacus mephiticus F. W. Peirson 1932-7-24 10397 Tuolumne Slopes above Relief Reservoir, Stanislaus River Region 2286 Comment
  RSA80109  Mimulus nanus var. mephiticus F. W. Peirson 1932-7-24 10397 Tuolumne Slopes above Relief Reservoir, Stanislaus River region, Sierra Nevada. 2287 Comment
  RSA83980  Saxifraga aprica F. W. Peirson 1910-1 s.n. Tuolumne Tuolumne Meadows. Sierra Nevada. Comment
  POM146790  Galium trifidum var. pusillum F. W. Peirson 1927-8-4 s.n. Tuolumne Lower Tuolumne Meadows. 2561 Comment
  POM146791  Ligusticum grayi F. W. Peirson 1927-8-6 s.n. Tuolumne Porcupine Flat Comment
  RSA66205  Arabis repanda G. B. Peirson 1914-07 657 Tuolumne Tuolumne Meadow region, Sierra Nevada Comment
  RSA70259  Vaccinium cespitosum F. W. Peirson 1910-1 838 Tuolumne Sierra Nevada Comment
  RSA73060  Leptosiphon ciliatus F. W. Peirson 1927-7-31 7605 Tuolumne On trail from Tuolumne Meadows to Conness Peak. Sierra Nevada. 2744 Comment
  RSA77801  Hackelia velutina G. B. Peirson 1914-1 1006 Tuolumne Merced Lake, Yosemite National Park, Sierra Nevada. Comment
  RSA80856  Orthocarpus cuspidatus subsp. copelandii F. W. Peirson 1932-7-24 10396 Tuolumne Along trail to Relief Reservoir. 2073 Comment
  RSA82197  Trichostema lanceolatum F. W. Peirson 1932-8-14 10415 Tuolumne Near Jamestown. 366 Comment
  RSA84390  Mitella breweri F. W. Peirson 1927-8-1 7612 Tuolumne Woods on S side of Tuolumne Meadows. 2622 Comment
  CAS-BOT-BC39709  Descurainia Frank W. Peirson 1921-3-23 2592 Unknown Colorado Desert. Deep Canyon. 335 Comment
  GH345390  Adenostoma fasciculatum F. W. Peirson 1918-6-1 78 Unknown Mt. Wilson Toll Road. 609 Comment
  GH378812  Boechera lyallii F. W. Peirson 1940-8-2 12973 Unknown east side Ruby stream below Ruby Lake, Rock Creek Lake Basin 3383 Comment
  GH386566  Brickellia microphylla F. W. Peirson 1921-10-22 2599 Unknown Head of Eaton Canyon Comment
  GH386962  Baccharis salicina F. W. Peirson 1924-10-19 5228 Unknown roadside at Clearwater Comment
  GH443060  Malacothrix similis F. W. Peirson 1925-5-19 5772 Unknown Hueneme Comment
  NY802375  Lotus argyraeus F. W. Peirson 2266 Unknown Santa Ana River 1981 Comment
  RSA65253  Chorizanthe pungens var. pungens F. W. Peirson 1912-1 1779 Unknown Central coast Comment
  RSA66346  Eriogonum nudum var. scapigerum F. W. Peirson 1916-8-25 1756 -a Unknown Silver Lake. Sierra Nevada. 3201 Comment
Read comments
Feb 6 2013
  RSA69227  Ledum glandulosum F. W. Peirson 1951-1 842 Unknown Sierra Nevada Comment
  SEINET10461018  Nemacladus pinnatifidus Frank W. Peirson 1918-6-12 Peirson 219 Unknown Foothills east of Rubio Canyon; San Gabriel Mountains 610 Comment
  CAS-BOT-BC17779  Carex alma Frank W. Peirson 1923-6-10 4270 Ventura Mount Pinos. Seymour Creek. 1798 Comment
  CAS-BOT-BC235645  Keckiella breviflora var. breviflora Frank W. Peirson 1922-7-29 3237 Ventura Seymour Cr., Mt. Pinos Comment
  CAS-BOT-BC281201  Melica stricta Frank W. Peirson 1923-6-10 3549 Ventura Seymour Creek, Mt Pinos region 1828 Comment
  PASA2393  Clematis ligusticifolia Frank W. Peirson 1922-7-30 Ventura Seymour Creek, Mt. Pinos Region 1828 Comment
  PASA850  Penstemon breviflorus Frank W. Peirson 1922-7-29 Ventura Seymour Creek, Mt. Pinos Region 1828 Comment
  RSA70245  Allium howellii var. clokeyi F. W. Peirson 1923-6-10 3598 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA72099  Epilobium canum subsp. latifolium F. W. Peirson 1922-7-29 6481 Ventura North Fork of Seymour Creek, Mt Pinos 1905 Comment
  RSA87029  Lupinus densiflorus var. glareosus F. W. Peirson 1922-7-29 3250 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  UCD86555  Muhlenbergia asperifolia F. W. Peirson 1922-7-29 3221 Ventura Seymour Creek, Mt. Pinos Region. 1828 Comment
  RSA0029693  Delphinium parishii subsp. pallidum F. W. Peirson 1923-6-10 3589 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA65409  Lewisia rediviva var. minor F. W. Peirson 1923-6-11 3595 Ventura Mt Pinos 2622 Comment
  RSA66043  Eriogonum baileyi var. baileyi F. W. Peirson 1922-7-31 3243 Ventura Seymour Creek. 1829 Comment
  RSA70460  Allium fimbriatum var. fimbriatum F. W. Peirson 1923-6-12 3587 Ventura Along road 1 mile south of Divide 5556, Seymour Creek region, Mt. Pinos. 1616 Comment
  RSA71114  Convolvulus simulans F. W. Peirson 1918-5-5 893 Ventura Roadside W of Simi Comment
  RSA79570  Cryptantha clevelandii var. florosa F. W. Peirson 1925-4-19 5774 Ventura Hueneme Beach Comment
  RSA79795  Collinsia callosa F. W. Peirson 1923-6-11 3576 Ventura abundant on South Fork of Seymour Creek. 1905 Comment
  RSA80362  Perideridia parishii subsp. latifolia F. W. Peirson 1922-7-30 3245 Ventura Mt. Pinos. 2561 Comment
  RSA80687  Reseda alba F. W. Peirson 1925-3-27 5725 Ventura Roadside east of Ventura. Comment
  RSA85612  Ivesia santolinoides F. W. Peirson 1922-7-30 3233 Ventura Mount Pinos 2210 Comment
  RSA86866  Prunus ilicifolia F. W. Peirson 1925-4-18 5766 Ventura Sespe Creek. 305 Comment
  RSA87349  Galium andrewsii F. W. Peirson 1923-6-11 3567 Ventura Seymour Creek, Mt. Pinos. 1905 Comment
  RSA92076  Ancistrocarphus filagineus F. W. Peirson 1923-6-10 3552 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA92516  Verbesina encelioides subsp. exauriculata F. W. Peirson 1925-12-19 s.n. Ventura east of Saticoy. Comment
  RSA92903  Madia elegans F. W. Peirson 1922-7-31 4240 Ventura Seymour Creek. 1829 Comment
  RSA93918  Xanthium strumarium F. W. Peirson 1920-8-1 2237 Ventura 6 miles west of Ventura 0 Comment
  RSA97409  Lomatium vaginatum F. W. Peirson 1923-6-10 3553 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA97435  Lomatium mohavense subsp. mohavense F. W. Peirson 1923-6-10 3554 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA99373  Lonicera interrupta F. W. Peirson 1922-7-29 4505 Ventura Seymour Creek, Mt. Pinos. 1829 Comment
  UC501480  Hypericum formosum var. scouleri Frank W. Peirson 1922-6-30 3241 Ventura Mt. Pinos Region, Seymour Creek 1950 Comment



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