Search Results — 2000 specimen records retrieved (1071 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA77580  Myosotis latifolia F. W. Peirson 1925-9-20 6435 Alameda Hills back of Oakland. Comment
  RSA83979  Saxifraga californica Mabel Peirson 1926-3-13 6524 Alameda Strawberry Canyon, Berkeley. Comment
  RSA85255  Physocarpus capitatus F. W. Peirson 1923-7-4 3751 Alameda Strawberry Creek, Berkeley. Comment
  CAS-BOT-BC145549  Briza minor Mabel B. Peirson 1926-4-10 6632 Alameda El Cerrito Hill, west slope. Comment
  PASA935  Lactuca saligna Frank W. Peirson 1925-11-2 Alameda Berkeley Comment
  RSA67354  Cardaria draba F. W. Peirson, Mabel Peirson 1926-4-4 6625 Alameda Berkeley Hills, Cragmont Region. Comment
  RSA91755  Anaphalis margaritacea Mabel Peirson 1912-07 s.n. Alameda Berkeley Hills Comment
  RSA94817  Lactuca saligna F. W. Peirson 1925-11-2 6471 Alameda Euclid Avenue, Cragmont, Berkeley Comment
  CAS-BOT-BC22078  Carex heteroneura Frank W. Peirson 1935-7-24 11711 Alpine Lake Alpine. 2225 Comment
  CAS-BOT-BC22163  Carex helleri Frank W. Peirson 1939-8-11 12826 Alpine North slope of Round Top. Woods Lake Region. 2956 Comment
  CAS-BOT-BC223129  Galium hypotrichium subsp. ebbettsense Frank W. Peirson 1935-7-27 11605 Alpine Summit region south of Ebbets Pass 2804 Comment
  CAS-BOT-BC34428  Carex davyi Frank W. Peirson 1935-7-26 11714 Alpine Hermit Valley. Mountain slope south of the Mokelumne River. 2438 Comment
  POM212505  Cerastium beeringianum F. W. Peirson 1935-7-30 11831 Alpine Woods Lake Region; at the north base of Roundtop. 2866 Comment
  RSA26684  Elymus glaucus F. W. Peirson 1935-7-24 11561 Alpine open woods near Lake Alpine, Sierra Nevada 2226 Comment
  RSA65899  Polygonum davisiae F. W. Peirson 1939-8-10 12800 Alpine Neaar Winnemucca Lake, Woods Lake Region. 2744 Comment
  RSA67123  Galium hypotrichium subsp. ebbettsense F. W. Peirson 1935-7-27 11604 Alpine Summit region S of Ebbet's Pass. Sierra Nevada. 2805 Comment
  RSA87333  Melica bulbosa F. W. Peirson 1937-7-24 12218 Alpine Shores of Winnemucca Lake, Woods Lake Region, Sierra Nevada. 2744 Comment
  SD87525  Carex davyi Frank W. Peirson 1935-7-26 11714 Alpine Hermit Valley; mountain slope south of the Mukelumne River. 2438 Comment
  SD87623  Astragalus whitneyi Frank W. Peirson 1935-7-27 11603 Alpine Summit region south of Ebbets Pass 2804 Comment
  SEINET180132  Elymus glaucus subsp. glaucus F. W. Peirson 1935-7-24 11561 Alpine Lake Alpine 0 Comment
  UC570530  Lewisia nevadensis Frank W. Peirson 1935-7-29 Alpine se along trail Wood Lake; Woods Lake region 2743 Comment
  UC570553  Draba densifolia Frank W. Peirson 1935-7-26 11597 Alpine at summit of a divide s Mokelumne River (Hermit Valley); , divide s of Mokelumne River 2590 Comment
  UC570574  Collinsia torreyi var. torreyi Frank W. Peirson 1935-7-24 11570 Alpine Lake Alpine Region n of Lake Alpine; Lake Alpine Region 2286 Comment
  UC640211  Lupinus lepidus var. lobbii Frank W. Peirson 1939-8-9 12789 Alpine in meadow land n Woods Lake; n of Woods Lake 2545 Comment
  UC640216  Chaenactis douglasii var. douglasii Frank W. Peirson 1939-8-12 12837 Alpine Frog Lake Woods Lake Region, Frog Lake 2712 Comment
  UC640229  Valeriana californica Frank W. Peirson 1939-8-10 12797 Alpine slopes above Winnemucca Lake; Woods Lake Region 2773 Comment
  UC640235  Antennaria media Frank W. Peirson 1939-8-11 12816 Alpine near Round Top Lake; Woods Lake Region 2895 Comment
  UC640254  Minuartia nuttallii subsp. gracilis Frank W. Peirson 1939-8-11 12817 Alpine Round Top Woods Lake Region (n slopes) 2987 Comment
  UC643219  Lupinus lepidus var. lobbii Frank W. Peirson 1939-8-11 Alpine sloping down from ne side Round Top; Woods Lake Region, sloping down from ne side Round Top 2895 Comment
  CAS-BOT-BC18043  Carex athrostachya Frank W. Peirson 1935-7-24 11709 Alpine Lake Alpine, near foot of lake. 2225 Comment
  CAS-BOT-BC268650  Eriogonum spergulinum var. reddingianum Frank W. Peirson 1939-8-13 12854 Alpine About Frog Lake; Woods Lake region, Sierra Nevada 2712 Comment
  CAS-BOT-BC34452  Carex deflexa var. boottii Frank W. Peirson 1935-7-29 11721 Alpine Wood Lake. 2560 Comment
  CAS-BOT-BC532308  Horkelia fusca var. parviflora Frank W. Peirson 1939-8-13 12853 Alpine Woods Lake Region; below Frog Lake. 2682 Comment
  POM231940  Trifolium longipes F. W. Peirson 1937-7-26 12123 Alpine Wood Lake Region, Woods Creek below the lake. 2561 Comment
  POM257956  Carex luzulifolia F. W. Peirson 1937-7-22 s.n. Alpine Woods Lake. 2561 Comment
  RSA0078551  Orobanche uniflora subsp. occidentalis F. W. Peirson 1935-7-26 11595 Alpine North slope above North Fork of Mokelumne River at Hermit Valley. 2377 Comment
  RSA65236  Eriogonum ovalifolium var. nivale F. W. Peirson 1937-7-25 12121 Alpine Small moraine immediately south of Fourth of July Lake, Woods Lake Region, Sierra Nevada 2896 Comment
  RSA66593  Phoenicaulis cheiranthoides F. W. Peirson 1935-7-30 11637 Alpine Near small un-named lake just below the 9500 ft contour; Woods Lake Region. Comment
  RSA69506  Luzula comosa F. W. Peirson 1939-8-12 12848 Alpine Below Camp Woods Lake region. 2546 Comment
  RSA70995  Cuscuta occidentalis F. W. Peirson 1935-7-25 11581 Alpine North of Lake Alpine. Comment
  RSA71892A  Navarretia leptalea subsp. bicolor F. W. Peirson 1939-8-13 s.n. Alpine Near Carson Pass, Sierra Nevada. Comment
  RSA71910  Navarretia capillaris F. W. Peirson 1939-8-14 12863 Alpine Woods Lake region, Sierra Nevada 2622 Comment
  RSA72665  Balsamorhiza sagittata F. W. Peirson 1935-7-25 11586 Alpine About 2 miles north of lake; Lake Alpine Region 2530 Comment
  RSA74482  Phacelia humilis var. humilis F. W. Peirson 1935-7-28 11614 Alpine Along margin of Red Lake. 2409 Comment
  RSA766160  Eriogonum umbellatum F. W. Peirson 1935-7-24 s.n. Alpine Lake Alpine region. N of the lake. 2287 Comment
  RSA77055  Hydrophyllum occidentale F. W. Peirson 1935-7-24 11572 Alpine North of Lake Alpine, Sierra Nevada. 2287 Comment
  RSA77586  Mertensia ciliata var. stomatechoides F. W. Peirson 1935-7-24 11562 Alpine Lake Alpine. 2226 Comment
  RSA82359  Agastache urticifolia F. W. Peirson 1939-8-10 12795 Alpine Below Winnemucca Lake, Wood s Lake Region. 2652 Comment
  RSA84274  Ranunculus alismifolius var. hartwegii F. W. Peirson 1935-7-29 11623 Alpine Along trail SW from Woods Lake, Sierra Nevada. 2744 Comment
  RSA85189  Sparganium angustifolium subsp. emersum F. W. Peirson 1939-8-10 12813 Alpine Around edge of Woods Lake. 2561 Comment
  RSA87424  Lupinus polyphyllus subsp. superbus F. W. Peirson 1937-7-23 12103 Alpine Southwest of Woods Lake. 2805 Comment
  RSA88696  Carex lenticularis var. lipocarpa F. W. Peirson 1939-8-10 12810 Alpine Winnemucca Lake, Woods Lake Region 2744 Comment
  RSA90617  Stenotus acaulis F. W. Peirson 1935-7-26 11598 Alpine S of N Fork of Mokelumne River (Hermit Valley). 2591 Comment
  RSA90755  Astragalus purshii var. lectulus F. W. Peirson 1937-7-23 12107 Alpine Southwest of Woods Lake. 2744 Comment
  RSA90770  Astragalus whitneyi F. W. Peirson s.n. Alpine Frog Lake, Woods Lake Region. 2713 Comment
  RSA91189  Lupinus arbustus subsp. silvicola F. W. Peirson 1939-8-10 12799 Alpine Above Winnemucca Lake, Woods Lake Region. 2774 Comment
  RSA93964  Ericameria suffruticosa F. W. Peirson 1939-8-10 12809 Alpine Above Winnemucca Lake, Woods Lake Region, Sierra Nevada 2744 Comment
  RSA94744  Senecio streptanthifolius F. W. Peirson 1937-7-26 12127 Alpine East of Winnemucca Lake, Woods Lake Region, Sierra Nevada. 2835 Comment
  RSA97158  Lomatium dissectum var. multifidum F. W. Peirson 1935-7-24 11569 Alpine North of Lake Alpine, Sierra Nevada 2287 Comment
  RSA97370  Sanicula tuberosa F. W. Peirson 1935-7-24 11563 Alpine North of lake Alpine, Sierra Nevada 2256 Comment
  SEINET7566405 Image available Carex luzulifolia F. W. Peirson 1935-7-30 11723 Alpine Wood Lake Region. 2743 Comment
  UC570567  Hackelia nervosa Frank W. Peirson 1935-7-28 11618 Alpine near foot of Red Lake 2407 Comment
  UC640244  Sparganium emersum var. emersum Frank W. Peirson 1939-8-10 12813 Alpine margin of Woods Lake 2560 Comment
  RSA77695  Ceanothus prostratus F. W. Peirson 1926-6-21 6780 Butte Butte Meadow, Humboldt Road Comment
  PASA500  Brodiaea hyacinthina Frank W. Peirson 1926-6-21 Butte Butte Meadow, Humbolt Road Comment
  RSA80134  Mimulus guttatus F. W. Peirson 1926-6-21 6775 Butte Butte Meadow, Humboldt Road. Comment
  UC501524  Brodiaea minor Frank W. Peirson 1926-6-21 6767 Butte Humboldt Road Butte Meadows Comment
  RSA80469  Mimulus nanus var. mephiticus F. W. Peirson 1935-7-23 11556 Calaveras Big Meadow, North Fork of Stanislaus River region. 1982 Comment
  UC570536  Navarretia divaricata Frank W. Peirson 1935-7-23 11541 Calaveras Big Meadow North Fork Stanislaus River Region 1981 Comment
  UC570543  Pteryxia terebinthina var. californica Frank W. Peirson 1935-7-23 Calaveras Big Meadow, N. Fork Stanislaus River Region 1981 Comment
  RSA68707  Lilium pardalinum subsp. vollmeri Frank W. Peirson 1923-7-12 3688 Del Norte 15 miles south of Crescent City Comment
  RSA69883  Fraxinus latifolia F. W. Peirson 1941-7-27 13101 Del Norte Patrick Creek Forest Camp Comment
  UCD61901  Elymus glaucus F. W. Peirson 1941-7-27 Del Norte Patrick Creek Forest Camp. Comment
  RSA69282  Tofieldia glutinosa subsp. occidentalis F. W. Peirson 1923-7-13 3686 Del Norte 10 miles northeast of Gasquet Comment
  RSA91556  Trifolium breweri F. W. Peirson 1923-7-13 3620 Del Norte 10 miles north of Gasquet Comment
  RSA94422  Chrysanthemum leucanthemum F. W. Peirson 1928-7-5 7960 Del Norte Open field 15-20 miles north of Crescent City Comment
  RSA95307  Rhamnus californica subsp. occidentalis F. W. Peirson 1941-7-28 13104 Del Norte 10 miles below Patrick's Creek Camp. Comment
  CAS-BOT-BC208853  Lupinus argenteus var. meionanthus Frank W. Peirson 1925-7-1 6180 El Dorado State Line, Lake Tahoe 1905 Comment
  CAS-BOT-BC230637  Plagiobothrys torreyi var. diffusus Frank W. Peirson 1925-7-1 6179 El Dorado State Line, Lake Tahoe 1920 Comment
  CAS-BOT-BC435452  Lithophragma glabrum Frank W. Peirson 1925-7-5 6271 El Dorado Mt. Tallac 2590 Comment
  LA38980  Mimulus nanus var. mephiticus Frank W. Peirson; 1925-7-8 6321 El Dorado Road down the American River 1981 Comment
  RSA70569  Vaccinium cespitosum F. W. Peirson 1925-7-3 6239 El Dorado Glen Alpine Creek Basin, Sierra Navada. 2363 Comment
  RSA87340  Muhlenbergia filiformis F. W. Peirson 1925-7-2 6215 El Dorado On south side of Lake Tahoe. 1905 Comment
  SD87767  Antennaria argentea Frank W. Peirson 1925-7-1 6181 El Dorado State Line, Lake Tahoe 1905 Comment
  SEINET180137 Image available Muhlenbergia richardsonis Frank W. Peirson 1935-8-2 El Dorado State Line Lake Tahoe. 1905 Comment
  UC555562  Horkelia fusca subsp. parviflora Frank W. Peirson 1925-7-1 6184 El Dorado State Line Lake Tahoe 1905 Comment
  CAS-BOT-BC310041  Hemizonella minima F. W. Peirson 1925-7-7 6304 El Dorado Trail along Echo Lake 2286 Comment
  CAS-BOT-BC344347  Madia exigua F. W. Peirson 1925-7-3 6234 El Dorado Glen Alpine Creek, Sierra Nevada 2042 Comment
  PASA242  Trifolium monanthum Frank W. Peirson 1925-7-2 El Dorado Fallen Leaf Lake. On Glen Alpine road, 1/4 mile from lake 2011 Comment
  POM87076  Heterotheca villosa var. minor F. W. Peirson 1925-7-5 6283 El Dorado Near Fallen Leaf Lodge. 1951 Comment
  RSA69379  Thalictrum fendleri F. W. Peirson 1925-7-6 6285 El Dorado 1/4 mile above Fallen Leaf Camp Comment
  RSA69788  Gentiana calycosa F. W. Peirson 1931-8-7 9519 El Dorado Near Grass Lake, Glen Alpine Creek Basin. 2226 Comment
  RSA72150  Gayophytum racemosum F. W. Peirson 1925-7-1 6190 El Dorado State Line, Lake Tahoe 1905 Comment
  RSA77822  Hackelia mundula F. W. Peirson 1925-7-8 8656 El Dorado On Placerville Grade from Echo Lake down the American River. 1829 Comment
  RSA78520  Carex nebrascensis F. W. Peirson 1937-7-28 13607 El Dorado State Line, Lake Tahoe. 1905 Comment
  RSA79767  Penstemon heterodoxus subsp. cephalophorus F. W. Peirson 1937-7-28 12136 El Dorado Near State Line, Lake Tahoe. 1905 Comment
  RSA79858  Penstemon speciosus F. W. Peirson 1931-8-10 9549 El Dorado Along boulevard on west shore of Lake Tahoe. 1921 Comment
  RSA80342  Orthocarpus hispidus F. W. Peirson 1925-7-1 6193 El Dorado State Line, Lake Tahoe. Sierra Nevada. 1905 Comment
  RSA82349  Agastache urticifolia F. W. Peirson 1925-7-6 6286 El Dorado 1/4 mile above Fallen Leaf Camp, Sierra Nevada. 1982 Comment
  RSA85309  Paeonia brownii F. W. Peirson 1925-7-1 6169 El Dorado State Line, Lake Tahoe 1905 Comment
  RSA85540  Cheilanthes gracillima F. W. Peirson 1931-8-7 9524 El Dorado Near Grass Lake, Glen Alpine Creek Basin. 2226 Comment
  RSA90401  Lotus unifoliolatus F. W. Peirson 1925-7-2 6208 El Dorado South side of Lake Tahoe. 1905 Comment
  RSA90881  Carex spectabilis F. W. Peirson 1931-8-8 9535 El Dorado Lake of the Woods trail, Glen Alpine Creek Basin. 2256 Comment
  RSA90922  Erigeron compositus F. W. Peirson 1925-7-3 6496 El Dorado Glen Alpine Creek Basin, Sierra Nevada. 2287 Comment
  RSA93071  Aster oregonensis F. W. Peirson 1931-8-7 9531 El Dorado Glen Alpine Road, Glen Alpine Creek Basin 1982 Comment
  RSA93315  Aster breweri F. W. Peirson 1931-8-7 9522 El Dorado Near Grass Lake, Glen Alpine Creek Basin Comment
  RSA93667  Solidago canadensis subsp. elongata F. W. Peirson 1931-8-8 9537 El Dorado Near trail to Lake of the Woods, Glen Alpine Creek Basin. 2043 Comment
  RSA93674  Antennaria geyeri F. W. Peirson 1925-7-1 6182 El Dorado State Line, Lake Tahoe, Sierra Nevada 1951 Comment
  RSA95012  Agoseris monticola F. W. Peirson 1931-8-9 9546 El Dorado Scattered on open gravelly slopes along the east trail to the summit of Mt. Tallac 2774 Comment
  RSA95018  Malacothrix floccifera F. W. Peirson 1925-7-8 6323 El Dorado Road down American River, Sierra Nevada. Comment
  RSA95080  Microseris nutans F. W. Peirson 1925-7-4 6257 El Dorado Road, east side of Fallen Leaf Lake, Sierra Nevada Comment
  RSA97334  Pteryxia terebinthina var. californica F. W. Peirson 1925-7-5 6277 El Dorado Summit of Mt. Tallac. Comment
  UC908166  Navarretia intertexta Frank W. Peirson 1925-1-1 El Dorado s side Lake Tahoe; Sierra Nevada Comment
  CAS-BOT-BC16396  Barbarea orthoceras Frank W. Peirson 1919-8-24 1917 Fresno At south end of Rae Lake. 3230 Comment
Read comments
Dec 23 2018
  CAS-BOT-BC28495  Carex lenticularis var. lipocarpa Frank W. Peirson 1939-8-22 13595 Fresno Jackass Meadow, Florence Lake. 2179 Comment
  CAS-BOT-BC286596  Ericameria bloomeri Frank W. Peirson 1939-8-22 12884 Fresno Florence Lake 2209 Comment
  JEPS26949  Packera werneriifolia Frank W. Peirson 1917-1 Fresno Evolution Lake Sierra Nevada Comment
  JEPS54659  Astragalus gambelianus Frank W. Peirson 1925-3-23 5640 Fresno slope above Fresno County Auto Camp (Coalinga to Parkfield, Inner Coast Ranges); Inner Coast Ranges, Coalinga to Parkfield 944 Comment
  POM11150  Woodsia scopulina F. W. Peirson 1921-8-17 s.n. Fresno Cardinal Lake, Sierra Nevada 3232 Comment
  RSA65679  Lewisia nevadensis F. W. Peirson 1911-8-3 607 Fresno Rae Lake region, Sierra Nevada. 3232 Comment
  RSA65730  Claytonia exigua subsp. exigua F. W. Peirson 1925-3-23 5636 Fresno Between Coalinga and Parkfield. 945 Comment
  RSA66222  Arabis holboellii var. pinetorum F. W. Peirson 1939-8-20 12873 Fresno West side of Florence Lake. 2226 Comment
  RSA68737  Fritillaria atropurpurea Frank W. Peirson 1911-1 1674 Fresno Rae Lake and other high Sierra Nevada points Comment
  RSA69235  Gaultheria humifusa F. W. Peirson 1921-8-13 2530 Fresno Grouse Meadows. 2515 Comment
  RSA69318  Pyrola californica F. W. Peirson 1921-8-13 2639 Fresno Grouse Meadow, Middle Fork of Kings River. 2515 Comment
  RSA70588  Sisyrinchium elmeri Frank W. Peirson 1917-8-6 1693 Fresno Bubbs Creek at East Creek, Sierra Nevada 2591 Comment
  RSA73297  Linanthus pungens subsp. pulchriflorus F. W. Peirson 1917-8-13 932 Fresno Grouse Meadows, Middle Fork of Kings River, Sierra Nevada 2515 Comment
  RSA79837  Penstemon azureus subsp. azureus F. W. Peirson 1939-8-22 s.n. Fresno Below dam, Florence Lake. Sierra Nevada 2180 Comment
  RSA80049  Veronica alpina var. alterniflora F. W. Peirson 1921-8-17 1093 Fresno Cardinal Lake, South Fork of Kings River, Sierra Nevada. 3506 Comment
  RSA82364  Agastache urticifolia F. W. Peirson 1921-8-13 1062 Fresno Le Conte Canyon, Grouse Meadows. 2515 Comment
  RSA85038  Reseda alba F. W. Peirson 1939-8-20 12871 Fresno West side of Florence Lake 2226 Comment
  RSA86754  Vulpia microstachys var. ciliata F. W. Peirson 1941-5-31 13080 Fresno Cedar Grove, Kings River; Sierra Nevada. 1402 Comment
  RSA88673  Carex lenticularis var. lipocarpa F. W. Peirson 1921-8-16 2566 Fresno Cardinal Lake, Sierra Nevada 3537 Comment
  UC1026421  Carex athrostachya F. W. Peirson 1939-8-18 13602 Fresno Huntington Lake Comment
  PASA1896  Epilobium lactiflorum Frank W. Peirson 1919-8-18 Fresno Summit Meadow, Kings River Region 2438 Comment
  POM9923  Narthecium californicum Frank W. Peirson 1921-8-13 s.n. Fresno Grouse Meadows, Le Conte Canyon, Middle Fork, Kings River Comment
  RSA0012464  Senecio hydrophilus F. W. Peirson 1914-8-13 2663 Fresno Fish Creek tributary to San Joaquin River, Sierra Nevada 1951 Comment
  RSA0074823  Sedum obtusatum F. W. Peirson 1917-8-2 1927 Fresno Grouse Meadows, Sierra Nevada, Kings Canyon National Park. 2515 Comment
  RSA0084027  Potentilla F. W. Peirson 1921-8-8 2629 Fresno Piute Creek, Sierra Nevada. 3139 Comment
  RSA69515  Veratrum californicum Frank W. Peirson 1921-8-17 2539 Fresno South Fork of Kings River; Sierra Nevada. 3125 Comment
  RSA75872  Nemophila menziesii var. menziesii F. W. Peirson 1925-3-23 5727 Fresno Road between Coalinga and Parkfield, Inner South Coast Ranges. 915 Comment
  RSA82066  Cordylanthus tenuis subsp. tenuis F. W. Peirson 1914-08 1161 Fresno South Fork of San Joaquin River, Sierra Nevada. Comment
  RSA90625  Ericameria bloomeri F. W. Peirson 1914-8-9 1238 Fresno Florence Lake, South Fork of San Joaquin River 2210 Comment
  RSA90941  Trifolium fucatum var. fucatum F. W. Peirson 1925-3-23 5631 Fresno Just below County Auto Camp, Inner Coast Range between Coalinga and Parkfield. 884 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
  RSA91002  Erigeron petiolaris F. W. Peirson 1911-8-3 8409 Fresno Rae Lake, 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
  RSA93336  Kelloggia galioides F. W. Peirson 1919-8-18 1190 Fresno Near Summit Meadow. Sierra Nevada. 2439 Comment
  RSA93889  Helenium bigelovii F. W. Peirson 1939-8-21 12875 Fresno South Fork of San Joaquin River. 2287 Comment
  RSA95155  Hieracium horridum F. W. Peirson 1919-8-24 1499 Fresno Rae Lake, Sierra Nevada. 3232 Comment
  RSA97119  Cornus stolonifera F. W. Peirson 1919-8-22 820 Fresno paradise Valley, South Fork of Kings River, Sierra Nevada. 2134 Comment
  RSA97375  Sanicula bipinnatifida F. W. Peirson 1925-3-23 5645 Fresno On road from Coalinga to Parkfield Comment
  CAS-BOT-BC311079  Heterotheca oregona var. rudis Frank W. Peirson 1926-7-13 7051 Humboldt Mad River, vicinity of Blue Lake Comment
  POM20541  Poa macrantha F. W. Peirson 1923-7-11 3645 Humboldt 18 miles N. of Eureka Comment
  RSA77779  Viola adunca F. W. Peirson 1926-7-12 7028 Humboldt West slope of Coast Range back of Orick. Comment
  RSA80294  Orthocarpus faucibarbatus F. W. Peirson, Mabel B. Peirson 1923-7-11 3849 Humboldt 7 miles N of Arcata. 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
  RSA88691  Carex leptopoda F. W. Peirson 1923-7-11 3665 Humboldt 18 miles N. of Eureka Comment
  JEPS63031  Stachys ajugoides var. rigida Frank W. Peirson 1926-7-12 7034 Humboldt near bridge over Redwood Creek (Orick) Comment
  RSA0074769  Sedum spathulifolium F. W. Peirson 1923-7-11 3957 Humboldt About 12 miles S of Orick. Comment
  RSA69588  Triglochin maritima F. W. Peirson 1923-7-11 6478 Humboldt Flats north of Eureka. Comment
  RSA80246  Orthocarpus erianthus var. gratiosus F. W. Peirson 1941-7-28 13107 Humboldt Along road to Patrick Point, State Park. Comment
  RSA82291  Scutellaria antirrhinoides F. W. Peirson 1932-7-7 10259 Humboldt Willow Creek. A few miles above town of that name. Comment
  RSA84988  Ruppia maritima F. W. Peirson 1923-7-11 3962 Humboldt 20 miles south of Eureka. Comment
  RSA90994  Trifolium wormskioldii F. W. Peirson 1923-7-11 3619 Humboldt Along road 7 miles north of Arcata. Comment
  RSA91151  Euthamia occidentalis F. W. Peirson 1926-7-13 7062 Humboldt Near Blue Lake, Mad River Comment
  RSA93723  Ageratina occidentalis F. W. Peirson 1926-7-13 7052 Humboldt Near Blue Lake, Mad River Comment
  RSA94392  Madia anomala F. W. Peirson 1926-7-14 7067 Humboldt Redwood Camp, Lower Eel River Comment
  SD87756  Leontodon saxatilis subsp. saxatilis F. W. Peirson 1926-7-13 7056 Humboldt Mad River, near Blue Lake Comment
  CAS-BOT-BC106603  Baileya pleniradiata F. W. Peirson 1932-3-21 9777 Imperial East edge Sand Hills 60 Comment
  CAS-BOT-BC229619  Mirabilis tenuiloba Frank W. Peirson 1941-4-8 13075 Imperial Painted Gorge, Road to gorge turns N from boulevard a few miles E of Mountains Springs Grade Comment
  PASA821  Lupinus concinnus var. agardhianus Frank W. Peirson 1922-4-13 Imperial Mountain Springs Grade 365 Comment
  POM128747  Populus fremontii F. W. Peirson 1927-4-15 7203 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  POM212927  Petalonyx linearis F. W. Peirson 1935-4-16 11460 Imperial North of the bridge over the canal at Laguna Dam Comment
  RSA65191  Chorizanthe corrugata F. W. Peirson 1932-3-22 9795 Imperial Midway Well. 152 Comment
  RSA65743  Sesuvium verrucosum F. W. Peirson 1918-04 1856 Imperial Salton Sea. Comment
Read comments
Nov 18 2014
  RSA69681  Allenrolfea occidentalis F. W. Peirson 1918-03 1840 Imperial Ranch at northern end of Salton Sea. Comment
Read comments
Feb 20 2013
  RSA70379  Chamaesyce pediculifera F. W. Peirson 1932-3-22 9796 Imperial Midway Well 152 Comment
  RSA74514  Phacelia pachyphylla F. W. Peirson 1941-4-8 13072 Imperial Painted Gorge north of the San Diego to El Centro hwy. Comment
  RSA75130  Nemacladus glanduliferus var. orientalis F. W. Peirson 1932-3-22 9798 Imperial Midway Well. 152 Comment
  RSA77045  Sphaeralcea orcuttii F. W. Peirson 1922-4-12 2893 Imperial along Imperial Valley Boulevard about opposite the southeast end of the Salton Sea Comment
  RSA77425  Petalonyx linearis F. W. Peirson 1935-4-16 11460 Imperial North of bridge of canal at Laguna Dam [AZ], north of Yuma. Comment
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Feb 25 2008
  RSA77841  Fagonia laevis F. W. Peirson 1932-3-21 9783 Imperial 3 mi. north of Ogilby. 122 Comment
  RSA85175  Ephedra trifurca F. W. Peirson 1927-4-15 7193 Imperial Lower part of dunes west of Yuma. Comment
  RSA87090  Lupinus brevior F. W. Peirson 1922-4-13 5226 Imperial Mountain Springs Grade on road from El Centro to San Diego. 366 Comment
  RSA87368  Muhlenbergia microsperma F. W. Peirson 1932-3-22 9805 Imperial Midway Well. 152 Comment
  UC501478  Oenothera deltoides subsp. deltoides Frank W. Peirson 1932-3-21 9771 Imperial 8 mi e Holtville 15 Comment
  RSA0126953  Mentzelia longiloba var. longiloba F. W. Peirson 1927-4-15 7201 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  RSA90745  Astragalus magdalenae var. peirsonii F. W. Peirson 1932-3-21 9776 Imperial The east edge of the Sand Hills east of Holtville 60 Comment
  RSA91541  Dasyochloa pulchella F. W. Peirson 1922-4-13 4330 Imperial Foot of Mountain Springs Grade, w. Imperial County. Comment
  RSA92215  Palafoxia arida var. arida F. W. Peirson 1932-3-21 9770 Imperial 6 miles east of Holtville. 0 Comment
  RSA92884  Populus fremontii F. W. Peirson 1927-4-15 7203 Imperial Near Ft. Yuma. Comment
  RSA93353  Dieteria asteroides F. W. Peirson 1927-4-15 7206 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  RSA93894  Encelia farinosa var. farinosa F. W. Peirson 1932-3-21 9792 Imperial Desert 10 mi. N of Ogilby. 152 Comment
  RSA94403  Chaenactis stevioides var. stevioides F. W. Peirson 1927-4-16 7208 Imperial A couple of miles below foot of Mountain Springs grade Comment
  CAS-BOT-BC106330  Brickellia atractyloides var. arguta Frank W. Peirson 1932-5-9 9951 Inyo Keane Spring, Funeral Mts. 1249 Comment
  CAS-BOT-BC117128  Carex spectabilis Frank Warrington Peirson 1933-8-21 10839 Inyo Rock Creek Lake Basin. Meadow about lake in upper Ruby Creek. 3505 Comment
  CAS-BOT-BC118097  Delphinium polycladon Frank W. Peirson 1939-8-6 s.n. Inyo Rock Creek Lake Basin, on the west shore of Ruby Lake 3398 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-BC118818  Carex preslii Frank Warrington Peirson 1940-8-17 13022 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3230 Comment
  CAS-BOT-BC124060  Galium hypotrichium subsp. subalpinum Frank Warrington Peirson 1919-8-27 1189 Inyo Sawmill Creek, east slope Sierra Nevada 2956 Comment
  CAS-BOT-BC132776  Salix arctica F. W. Peirson 1933-8-9 10850 Inyo Rock Creek Lake Basin 3474 Comment
  CAS-BOT-BC162101  Bromus porteri Frank W. Peirson 1934-7-28 13476 Inyo Rock Creek Lake Basin. 3352 Comment
  CAS-BOT-BC16318  Boechera howellii Frank W. Peirson 1929-7-22 8538 Inyo Bishop Pass. 3505 Comment
  CAS-BOT-BC216350  Cryptantha glomeriflora F. W. Peirson 1933-8-19 11146 Inyo Dry level flats near the Heart Lake Meadow, Rock Creek Lake Basin, northern Inyo Co. 3246 Comment
  CAS-BOT-BC217525  Galium hypotrichium subsp. hypotrichium Frank W. Peirson 1931-7-19 9497 Inyo Rock Creek Lake Basin 3352 Comment
  CAS-BOT-BC218400  Comastoma tenellum Frank W. Peirson 1931-7-21 9482 Inyo Meadow at Heart Lake, Rock Creek Lake Basin 3200 Comment
  CAS-BOT-BC22199  Carex helleri Frank W. Peirson 1933-8-15 s.n. Inyo Rock Creek Lake Basin. Slope above Mono Pass. 3810 Comment
  CAS-BOT-BC22200  Carex helleri Frank W. Peirson 1933-8-18 10843 Inyo Rock Creek Lake Basin. Broken country southwest of Long Lake. 3291 Comment
  CAS-BOT-BC256835  Eriogonum incanum Frank W. Peirson 1931-8-2 s.n. Inyo Rock Creek Lake Basin 3352 Comment
  CAS-BOT-BC264392  Penstemon heterodoxus var. heterodoxus F. W. Peirson 1931-8-4 s.n. Inyo Rock Creek Lake Basin 3200 Comment
  CAS-BOT-BC28068  Carex illota Frank W. Peirson 1933-8-8 11329 Inyo Along the Escarpment at Heart Lake, Rock Creek Lake Basin. Comment
  CAS-BOT-BC28599  Achillea millefolium Frank W. Peirson 1933-8-19 s.n. Inyo Near Ruby Falls, Rock Creek Lake Basin 3322 Comment
  CAS-BOT-BC317076  Packera pauciflora Frank Warrington Peirson 1930-8-3 9054 Inyo Rock Cr. Lake Basin, Shores of Heart Lake. 3200 Comment
  CAS-BOT-BC318399  Packera cana Frank Warrington Peirson 1931-7-20 s.n. Inyo Rock Creek Lake basin 3505 Comment
  CAS-BOT-BC333029  Senecio scorzonella Frank W. Peirson 1940-8-14 12982 Inyo Box Lake, Rock Creek Lake Basin 3230 Comment
  CAS-BOT-BC34113  Carex breweri Frank W. Peirson 1934-7-22 s.n. Inyo Rock Creek Lake Basin. Above the Upper Glacial Lake. 3383 Comment
  CAS-BOT-BC362718  Raillardella argentea Frank W. Peirson 1933-8-8 s.n. Inyo Steep mountain slope west of Heart Lake. Rock Creek Lake Basin 3474 Comment
  CAS-BOT-BC86945  Antennaria pulchella F. W. Peirson 1930-8-7 9120 Inyo Valley southward from Ruby Lake, Rock Creek Lake Basin, northern Inyo County 3444 Comment
  CAS-BOT-BC9406  Carex subnigricans Frank W. Peirson 1934-7-20 s.n. Inyo Rock Creek Lake Basin 3352 Comment
  JEPS16585  Luzula divaricata Frank W. Peirson 1937-8-7 Inyo Rock Creek Lake Basin 3291 Comment
  JEPS1697  Eucrypta micrantha Frank W. Peirson 1928-4-2 7785 Inyo near Bradbury Well; Death Valley Region Comment
  JEPS19203  Lorandersonia peirsonii Frank W. Peirson 1937-8-8 Inyo along summit Transverse Ridge; Rock Creek Lake Basin 3352 Comment
  JEPS22379  Cryptantha nubigena Frank W. Peirson 1937-8-9 Inyo below Mono Pass; Rock Creek Lake Basin 3627 Comment
  JEPS26947  Packera werneriifolia Frank W. Peirson 1937-8-9 Inyo above Mono Pass; Rock Creek Lake Basin 3672 Comment
  JEPS3856  Castilleja nana Frank W. Peirson 1937-8-11 Inyo in the East Recess Rock Creek Lake Basin 3444 Comment
  JEPS40753  Symphyotrichum spathulatum Frank W. Peirson 1931-7-20 9500 Inyo Rock Creek Lake Basin. 3398 Comment
  JEPS66567  Orthilia secunda Frank W. Peirson 1934-7-29 11294 Inyo Rock Creek Lake Basin 3200 Comment
  JEPS67191  Luzula comosa Frank W. Peirson 1933-8-13 10803 Inyo meadow at Heart Lake; Rock Creek Lake Basin, meadow at Heart Lake 3230 Comment
  JEPS9793  Limosella aquatica Frank W. Peirson 1933-8-20 10791 Inyo Rock Creek Lake Basin; Sierra Nevada 3200 Comment
  PASA2300  Stylocline micropoides Frank W. Peirson 1928-4-2 Inyo Near Bradbury Well, Death Valley Region Comment
  POM160268  Juncus drummondii F. W. Peirson 1929-7-21 8524 Inyo Canyon south of South Lake, Bishop Creek. 3201 Comment
  POM175532  Salix arctica F. W. Peirson 1930-8-7 9121 Inyo Rock Creek Lake Basin, valley south of Ruby Lake. 3445 Comment
  POM203887  Castilleja lemmonii F. W. Peirson 1933-8-4 s.n. Inyo Rock Creek Lake Basin. Meadows south of Long Lake 3293 Comment
  POM254420  Senecio werneriifolius F. W. Peirson 1940-8-10 12984 Inyo Rock Creek Lake Basin 3399 Comment
  POM257994  Muhlenbergia filiformis F. W. Peirson 1937-8-10 s.n. Inyo Rock Creek Lake Basin. Comment
  RSA0126013  Arabis dispar F. W. Peirson 1932-5-7 9918 Inyo North fork of Hanaupah Canyon, Panamint Mountains. 2134 Comment
  RSA499119  Euphorbia incisa F. W. Peirson 1932-5-7 9925 Inyo North Fork of Hanaupah Canyon, Panamint Mts.,t. 1982 Comment
  RSA65116  Eriogonum incanum F. W. Peirson 1929-7-22 8535 Inyo Trail southward from Long Lake, Bishop Creek Region. 3415 Comment
  RSA65471  Rumex salicifolius var. denticulatus F. W. Peirson 1931-7-19 9430 Inyo East slope Rock Creek Lake Basin. 3317 Comment
  RSA65510  Silene bernardina F. W. Peirson 1933-8-20 10863 Inyo Rock Creek Lake Basin, Sierra Nevada 3293 Comment
  RSA65511  Silene bernardina F. W. Peirson 1933-8-8 10769 Inyo West of Heart Lake, Rock Creek Lake Basin 3506 Comment
  RSA65544  Arenaria kingii subsp. compacta F. W. Peirson 1911-8-8 628 Inyo Cottonwood Creek, Sierra Nevada. Comment
  RSA66171  Draba cuneifolia var. integrifolia F. W. Peirson 1928-4-2 7791 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA66251  Arabis lemmonii var. lemmonii F. W. Peirson 1934-7-21 11296 Inyo Rock Creek Lake Basin; Cirque on east side of canyon 3445 Comment
  RSA66482  Oxystylis lutea F. W. Peirson 1928-4-1 7775 Inyo Bradbury Well, south of Death Valley. Comment
  RSA66699  Arabis platysperma var. howellii F. W. Peirson 1929-7-22 8538 Inyo Among rocks, foot of steep trial on north slope of Bishop Pass 3506 Comment
  RSA66722  Galium stellatum F. W. Peirson 1928-4-2 7787 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA67132  Galium hypotrichium subsp. hypotrichium F. W. Peirson 1933-8-8 10770 Inyo Rock Creek Lake basin. West of Heart Lake. 3506 Comment
  RSA68651  Calochortus kennedyi var. munzii Frank W. Peirson 1932-5-8 9938 Inyo Wild Rose Canyon, Panamint Mts. 1829 Comment
  RSA69216  Cassiope mertensiana subsp. californica F. W. Peirson 1931-7-17 9479 Inyo Below Ruby Lake, Rock Creek Lake Basin, Sierra Nevada 3369 Comment
  RSA69229  Ledum glandulosum F. W. Peirson 1930-8-10 9172 Inyo To west of small lake in cirque at foot of Mt. Dade, Rock Creek Lake Basin, Sierra Nevada 3628 Comment
  RSA69530  Maianthemum stellatum Frank W. Peirson 1931-7-21 9425 Inyo Heart Lake, Rock Creek Lake Basin. 3232 Comment
  RSA69624  Juncus mexicanus F. W. Peirson 1940-8-6 12971 Inyo Near Heart Lake Meadow, Rock Creek Lake Basin. 3232 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
  RSA70404  Euphorbia incisa F. W. Peirson 1932-5-7 9925 Inyo North fork of Hanaupah Canyon, Panamint Mountains. 2134 Comment
  RSA716125  Cistanthe pygmaea F. W. Peirson 1937-8-5 s.n. Inyo Rock Creek Lake Basin. 3201 Comment
  RSA72133  Epilobium angustifolium var. macrophyllum F. W. Peirson 1931-7-25 9467 Inyo Rock Creek Lake Basin. near Heart lake. 3201 Comment
  RSA73671  Leptosiphon pachyphyllus F. W. Peirson 1908-7-23 941 Inyo Coyote Pass, Sierra Nevada 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
  RSA77803  Hackelia sharsmithii F. W. Peirson 1911-8-8 1010 Inyo In vicinity of Horseshoe Meadow, Cottonwood Creek, east side of Sierra Nevada Comment
  RSA78526  Carex scopulorum var. bracteosa F. W. Peirson 1940-9-10 13582 Inyo North end of Heart Lake Meadow, Rock Creek Lake Basin. Comment
  RSA78552  Carex proposita F. W. Peirson 1940-8-16 13556 Inyo Rock Creek Lake Basin, Sierra Nevada 3293 Comment
  RSA79861  Keckiella rothrockii subsp. rothrockii F. W. Peirson 1921-8-7 2641 Inyo Trail fro Coyote Pass to Andrews Camp. 2591 Comment
  RSA79944  Cryptantha nubigena F. W. Peirson 1934-7-24 11279 Inyo West of Heart Lake, Rock Creek Lake Basin, northern Inyo County. 3354 Comment
  RSA79988  Castilleja nana F. W. Peirson 1929-7-22 8531 Inyo Trail southward from Long Lake, Bishop Creek Region. 3415 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
  RSA82273  Castilleja lemmonii F. W. Peirson 1930-8-3 9062 Inyo shore of Heart Lake, Rock Creek Lake Basin. 3195 Comment
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Dec 19 2011
  RSA83957  Saxifraga nidifica F. W. Peirson 1930-8-7 9118 -a Inyo Valley southward from Ruby Lake, Rock Creek Lake Basin. 3476 Comment
  RSA83985  Saxifraga odontoloma F. W. Peirson 1930-8-7 9131 Inyo Spring on west shore of Ruby Lake, Rock Creek Lake Basin. 3399 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
  RSA85683  Potentilla diversifolia F. W. Peirson 1934-7-29 11293 Inyo Meadow at Ruby Falls, Rock Creek Lake Basin, extreme northern Inyo county. 3323 Comment
  RSA85713  Potentilla diversifolia F. W. Peirson 1929-7-19 8488 Inyo South Lake, Bishop Creek 3018 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
  RSA86527  Pinus contorta var. murrayana F. W. Peirson 1934-7-29 11328 Inyo Heart Lake Region, Rock Creek Lake Basin. Comment
  RSA86624  Purshia tridentata var. tridentata F. W. Peirson 1930-8-6 9113 Inyo Above Rock Creek Lake, Rock Creek Lake Basin. 3018 Comment
  RSA87362  Agrostis hyemalis F. W. Peirson 1931-7-31 9612 Inyo Rock Creek Lake Basin 3171 Comment
  RSA87375  Agrostis scabra F. W. Peirson 1933-8-11 10820 Inyo Heart Lake Meadow, Rock Creek Lake Basin, northern Inyo County. 3201 Comment
  RSA88712  Carex helleri F. W. Peirson 1929-7-21 8525 Inyo Below unnamed lake, canyon south of South Lake, Bishop Creek. 3201 Comment
  SD87536  Oxytropis viscida var. viscida Frank W. Peirson 1929-7-24 8547 Inyo Inconsolable Range, along summit ridge for a considerable distance 3657 Comment
  SD87670  Spiraea densiflora Frank W. Peirson 1921-8-8 1954 Inyo Piute Pass, east slope Comment
  SD87673  Salix orestera Frank W. Peirson 1931-7-17 9428 Inyo Rock Creek Lake Basin, along Ruby stream 3261 Comment
  SD87691  Symphoricarpos vaccinioides Frank W. Peirson 1929-7-19 8487 Inyo Near South Lake, Bishop Creek 3020 Comment
  UC1026420  Carex abrupta F. W. Peirson 1940-8-17 13558 Inyo Heart Creek Meadow Rock Creek Lake Basin, Heart Creek Meadow 3200 Comment
  UC1026429  Carex illota F. W. Peirson 1940-8-18 13573 Inyo along stream s Long Lake; Rock Creek Lake Basin 3261 Comment
  UC1026448  Carex vernacula Frank W. Peirson 1940-8-9 13575 Inyo Rock Creek Lake Basin, e side lakes Rock Creek Lake Basin 3291 Comment
  UC219385  Lorandersonia peirsonii F. W. Peirson 1921-8-18 Inyo Taboose Pass 3276 Comment
  UC501549  Tricardia watsonii Frank W. Peirson 1932-5-7 9923 Inyo North Fork Hanaupah Canyon; Panamint Mts. 1828 Comment
  UC511727  Galium hypotrichium subsp. hypotrichium Frank W. Peirson 1933-8-8 10770 Inyo steep mt. slope w Heart Lake; Rock Cr. Lake Basin 3505 Comment
  UC511753  Juncus mexicanus Frank W. Peirson 1933-8-19 10793 Inyo above Ruby Falls; Rock Creek Lake Basin 3352 Comment
  UC511795  Rorippa palustris Frank W. Peirson 1933-7-28 10709 Inyo Rock Creek 1371 Comment
  UC511819  Saxifraga rivularis Frank W. Peirson 1933-8-10 10765 Inyo slope above Ruby Lake (Rock Creek, Lake Basin); Rock Creek, Lake Basin 3505 Comment
  UC511820  Crepis acuminata Frank W. Peirson 1933-8-7 Inyo Long Lake Rock Creek Lake Basin (w shore) 3261 Comment
  UC511821  Eriogonum incanum Frank W. Peirson 1933-8-10 Inyo slopes above Ruby Lake; Rock Creek Lake Basin 3444 Comment
  UC511826  Eriogonum ovalifolium var. nivale Frank W. Peirson 1933-8-9 Inyo Rock Creek Lake Basin 3474 Comment
  UC511842  Gentiana newberryi Frank W. Peirson 1933-8-22 Inyo Rock Creek Basin, near Heart Lake 3200 Comment
  UC511866  Juncus parryi Frank W. Peirson 1933-8-4 Inyo Rock Creek Lake Basin, south of Long Lake 3352 Comment
  UC638455  Potentilla diversifolia var. diversifolia Frank W. Peirson 1934-7-29 11293 Inyo in the meadow below Ruby Falls; Rock Creek Lake Basin 3322 Comment
  UC643220  Boechera Frank W. Peirson 1940-8-6 12975 Inyo slope w Heart Lake; Rock Creek Lake Basin 3291 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
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Aug 19 2014
  UCD86686  Muhlenbergia filiformis F. W. Peirson 1937-8-10 s.n. Inyo Rock Creek Lake Basin. In the meadow at Ruby Falls. 3322 Comment
  UCD92944  Ptilagrostis kingii F. W. Peirson 1940-8-8 12939 Inyo Rock Creek Lake Basin. Border of Heart Lake Meadow. 3230 Comment
  CAS-BOT-BC115213  Carex vernacula Frank Warrington Peirson 1933-8-12 10846 Inyo Rock Creek Lake Basin. Glacial Lakes at food of Mt. Dade. Lake margin meadows. 3383 Comment
  CAS-BOT-BC117126  Carex spectabilis Frank Warrington Peirson 1933-8-12 s.n. Inyo Rock Creek Lake Basin. Shores of the Glacial Lakes. 3383 Comment
  CAS-BOT-BC20931  Carex heteroneura Frank W. Peirson 1934-7-23 s.n. Inyo Rock Creek Lake Basin. In Hear Lake Meadow. 3215 Comment
  CAS-BOT-BC259294  Eriogonum lobbii Frank W. Peirson 1930-8-5 9089 Inyo Rock Creek Lake Basin. Slope west of Ruby Lake 3413 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-BC362729  Raillardella argentea F. W. Peirson 1930-8-5 9096 Inyo Along trail to Mono Pass where it enters the gorge, Rock Creek Lake Basin, northern Inyo County 3596 Comment
  CAS-BOT-BC41714  Draba densifolia Frank W. Peirson 1932-7-24 8549 a Inyo Inconsolable Range. 3657 Comment
  CAS-BOT-BC436575  Luzula cascadensis Frank W. Peirson 1939-8-6 12778 Inyo Rock Creek Lake Basin, along west shore of Ruby Lake 3398 Comment
  CAS-BOT-BC460958  Chenopodium atrovirens Frank W. Peirson 1939-8-6 12776 Inyo Rock Creek Lake Basin, Ruby Lake 3398 Comment
  CAS-BOT-BC89382  Lepidium fremontii Frank W. Peirson 1936-4-7 s.n. Inyo Darwin Falls, Arugs Range. Comment
  JEPS3409  Castilleja parviflora Frank W. Peirson 1931-7-18 9078 Inyo shores of Chickenfoot Lake Chickenfoot Lake; Rock Creek Lake Basin 3276 Comment
  JEPS56564  Eriogonum rosense Frank W. Peirson 1934-7-21 Inyo Rock Creek Lake Basin; nw Inyo Co. 3444 Comment
  PASA1304  Silene watsonii Frank W. Peirson 1929-7-22 Inyo Trail to Bishop Pass, east slope 3505 Comment
  PASA1891  Epilobium alpinum Frank W. Peirson 1929-7-21 Inyo South Lake, Bishop Creek Comment
  PASA922  Calycoseris parryi Frank W. Peirson 1930-4-15 Inyo 9 miles south of Death Valley Junction 548 Comment
  POM203763  Leptosiphon nuttallii F. W. Peirson 1934-7-23 11275 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3216 Comment
  POM203764  Antennaria rosea F. W. Peirson 1934-7-20 8978 Inyo Region of Heart Lake. Rock Creek Lake Basin. 3216 Comment
  POM203889  Lomatium torreyi F. W. Peirson 1933-8-5 s.n. Inyo Rock Creek Lake Basin: summit of glacial ridge 3354 Comment
  POM87164  Tiquilia nuttallii F. W. Peirson 1925-6-25 s.n. Inyo 10 miles N of Independence Comment
  POM91446  Psorothamnus polydenius F. W. Peirson 1938-7-8 12417 Inyo 14 mi. N of Independence, Inyo Co. Comment
  RSA0003480  Lupinus padre-crowleyi F. W. Peirson 1921-8-6 2551 Inyo Trail out of Big Pine to Baker Creek, Sierra Nevada 3125 Comment
  RSA0012632  Senecio scorzonella F. W. Peirson 1934-7-20 s.n. Inyo At Ruby Falls, Rock Creek Lake Basin. 3323 Comment
  RSA0012800  Senecio spartioides F. W. Peirson 1921-8-5 1443 Inyo Big Pine Creek, east slope of Sierra Nevada. 2287 Comment
  RSA0012919  Helianthus nuttallii subsp. nuttallii F. W. Peirson 1914-08 1330 Inyo Bishop, Owens Valley. Comment
  RSA0029705  Delphinium polycladon F. W. Peirson 1929-6-22 8526 Inyo trail east of Long Lake, Bishop Creek. 3293 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
  RSA0101658  Botrychium simplex var. compositum F. W. Peirson 1913-1 1517 Inyo Big Pine Creek, Sierra Nevada. 3398 Comment
  RSA64704  Eriogonum spergulinum var. reddingianum F. W. Peirson 1931-7-17 9434 Inyo Near Ruby Falls; Rock Creek Lake Basin, Sierra Nevada. 3445 Comment
  RSA65072  Eriogonum incanum F. W. Peirson 1914-8-7 1765 a Inyo Piute Creek, Sierra Nevada. Comment
  RSA65097  Eriogonum lobbii F. W. Peirson 1917-8-20 1769 Inyo Green Lake, Sierra Nevada. Comment
  RSA65487  Sagina saginoides F. W. Peirson 1931-6-18 s.n. Inyo Road at Heart Lake, Rock Creek Lake Basin. Comment
  RSA65591  Minuartia nuttallii subsp. gracilis F. W. Peirson 1931-7-22 9442 Inyo Upper Ruby stream, Rock Creek Lake Basin, Sierra Nevada. 3628 Comment
  RSA65663  Montia fontana F. W. Peirson 1917-8-21 s.n. Inyo Owens Valley, Sierra Nevada, Inyo County Comment
  RSA65736  Montia linearis F. W. Peirson 1911-1 602 Inyo Sierra Nevada Comment
  RSA65861  Polygonum sawatchense subsp. sawatchense F. W. Peirson 1931-7-30 9432 Inyo Ruby Falls, Rock Creek Lake Basin. 3323 Comment
  RSA66064  Rorippa sinuata F. W. Peirson 1921-8-2 2529 Inyo Owens River, 2 miles north of Lone Pine. Comment
  RSA66496  Arabis lemmonii var. depauperata F. W. Peirson 1937-8-8 12187 Inyo On N slope of Transverse Ridge, Rock Creek Lake Basin. 3262 Comment
  RSA66513  Arabis platysperma var. howellii F. W. Peirson 1931-7-20 9454 Inyo Abundant in defile S of Mono Pass, Rock Creek Lake Basin 3628 Comment
  RSA69288  Tofieldia glutinosa subsp. occidentalis F. W. Peirson 1930-8-8 9145 Inyo West of Heart Lake, Rock Creek Lake Basin 3201 Comment
  RSA69433  Frasera puberulenta F. W. Peirson 1921-8-5 2640 Inyo Big Pine Creek. Sierra Nevada. 3049 Comment
  RSA69773  Gentiana newberryi F. W. Peirson 1931-7-25 9483 Inyo Rock Creek Lake Basin. near Heart lake. 3201 Comment
  RSA69791  Gentianella amarella F. W. Peirson 1930-8-8 9142 Inyo West of Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA69809  Centaurium exaltatum F. W. Peirson 1921-8-2 2822 Inyo Owens River, 2 miles north of Lone Pine. Comment
  RSA70302  Juncus mertensianus F. W. Peirson 1939-8-7 12783 Inyo Main gorge south of Long Lake, Rock Creek Lake Basin. 3323 Comment
  RSA70308  Juncus orthophyllus F. W. Peirson 1932-8-4 10788 Inyo Hear Lake Meadow, Rock Creek Lake Basin, Sierra Nevada. 3232 Comment
  RSA70596  Iris missouriensis Frank W. Peirson 1921-8-6 2615 Inyo Trail out of Big Pine to Baker Creek, Sierra Nevada. 3049 Comment
  RSA71848  Gilia cana subsp. triceps F. W. Peirson 1932-5-6 9902 Inyo Wild Rose Canyon, Panamint Mts. 1143 Comment
  RSA71884  Gilia stellata F. W. Peirson 1928-4-2 7811 Inyo Along foot of canyon wall and also on loose. Furnace Creek near Ryan, Death Valley. 610 Comment
  RSA72047  Phlox viridis subsp. compacta F. W. Peirson 1932-5-6 9904 Inyo Wild Rose Canyon, Panamint Mountains. 1982 Comment
  RSA72156  Gayophytum diffusum subsp. parviflorum F. W. Peirson 1930-8-7 9127 Inyo Rock Creek Lake Basin, Sierra Nevada 3399 Comment
  RSA72162  Epilobium hornemannii subsp. hornemannii F. W. Peirson 1931-7-17 9597 Inyo About 1/4 mile south of Ruby Falls, Rock Creek Lake Basin. 3323 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
  RSA75428  Camissonia walkeri subsp. tortilis F. W. Peirson 1932-5-6 9895 Inyo Gravelly stream terrace, 5 miles east of Darwin. 1220 Comment
  RSA77177  Malvella leprosa F. W. Peirson 1919-8-2 2068 Inyo Along Owens River, 2 miles N of Lone Pine. Comment
  RSA77497  Angelica lineariloba F. W. Peirson 1930-8-9 9169 Inyo Ruby Lake stream west of Heart Lake, Rock Creek Lake Basin. 3232 Comment
  RSA77850  Callitriche heterophylla subsp. bolanderi F. W. Peirson 1933-8-22 10789 Inyo Stream below Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA78507  Carex fissuricola F. W. Peirson 1940-8-17 13557 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3201 Comment
  RSA78537  Carex exserta F. W. Peirson 1937-8-4 13593 Inyo Escarpment at Heart Lake, Rock Creek Lake Basin. 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
  RSA79916  Cryptantha virginensis F. W. Peirson 1932-5-9 9948 Inyo north of Keane Spring, Funeral Mountains 1249 Comment
  RSA80491  Mimulus primuloides var. pilosellus F. W. Peirson 1934-7-23 11276 Inyo Abundant in Heart Lake Meadow, Rock Creek Lake Basin, extreme northwestern Inyo Co. 3201 Comment
  RSA80652  Hypericum androsaemum F. W. Peirson 1931-8-2 9464 Inyo Heart lake, Rock Creek Lake Basin 3201 Comment
  RSA80750  Cryptantha racemosa F. W. Peirson 1936-4-6 11806 Inyo open place in canyon where small stream occurs, Titus Canyon, Death Valley. 1067 Comment
  RSA83344  Monardella odoratissima subsp. glauca F. W. Peirson 1934-7-26 11284 Inyo Rock Creek Lake Basin. 3232 Comment
  RSA84861  Ranunculus eschscholtzii F. W. Peirson 1933-8-10 10783 Inyo slopes above Ruby Lake, Rock Creek Lake Basin. Northern Inyo Co. 3476 Comment
  RSA85697  Potentilla gracilis var. fastigiata F. W. Peirson 1933-8-8 10809 Inyo Escarpment west of Heart Lake, Rock Creek Lake Basin. Comment
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Dec 29 2016
  RSA86210  Cheilanthes parryi F. W. Peirson 1928-4-3 7819 Inyo Emigrant Pass, Death Valley Region 914 Comment
  RSA86796  Rosa woodsii subsp. gratissima F. W. Peirson 1919-8-2 700 Inyo Along Owens River, 2 miles N of Lone Pine. Comment
  RSA87226  Lupinus pratensis F. W. Peirson 1921-8-6 2550 Inyo Coyote Creek meadows, Sierra Nevada 3049 Comment
  RSA88759  Carex disperma F. W. Peirson 1929-7-25 8558 Inyo Camp at South Lake, Bishop Creek Region. 3018 Comment
  RSA88804  Carex abrupta F. W. Peirson 1933-8-11 10832 Inyo Heart Lake Meadow, Rock Creek Lake Basin, northern Inyo County. 3201 Comment
  RSA90189  Astragalus coccineus F. W. Peirson 1932-5-8 9937 Inyo Wild Rose Canyon, Panamint Mts. 1829 Comment
  RSA90204  Bromus marginatus F. W. Peirson 1931-7-30 9407 Inyo Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA90326  Lotus procumbens var. jepsonii F. W. Peirson 1911-1 2006 Inyo Little Cottonwood Creek, east slope of Sierra Nevada. Comment
  RSA90430  Oxytropis borealis var. viscida F. W. Peirson 1917-8-20 599 Inyo Sierra Nevada: Green Lake region. Coyote Creek Promontory 3352 Comment
  RSA90859  Carex subnigricans F. W. Peirson 1934-7-23 11400 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3216 Comment
  RSA90880  Carex spectabilis F. W. Peirson 1933-8-21 10839 Inyo Ruby Lake, Rock Creek Lake Basin, northern Inyo County. 3506 Comment
  RSA90903  Carex utriculata F. W. Peirson 1930-8-3 9074 Inyo On margin of Heart Lake, Rock Creek Lake Basin. 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
  RSA91255  Lupinus excubitus var. excubitus F. W. Peirson 1932-5-7 9929 Inyo North fork of Hanaupah Canyon, Panamint Mts. 1982 Comment
  RSA91435  Psorothamnus polydenius F. W. Peirson 1925-6-25 6029 Inyo 10 miles N of Independence 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
  RSA91594  Carex canescens F. W. Peirson 1933-8-11 10833 Inyo East Chain lakes, Rock Creek Lake Basin, Sierra Nevada, northern Inyo County. 3216 Comment
  RSA91625  Trisetum spicatum F. W. Peirson 1933-8-3 10871 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3201 Comment
  RSA91989  Ptilagrostis kingii F. W. Peirson 1937-8-4 12225 Inyo Escarpment at Heart Lake, Rock Creek Lake Basin. 3232 Comment
  RSA92116  Carex senta F. W. Peirson 1931-8-2 9414 Inyo Near Heart Lake, Rock Creek Lake Basin, northern Inyo County. 3201 Comment
  RSA92638  Salix reticulata subsp. nivalis F. W. Peirson 1934-7-13 11207 Inyo Ruby Lake, Rock Creek Lake Basin 3201 Comment
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Jan 9 2017
  RSA93004  Erigeron clokeyi F. W. Peirson 1940-8-3 12964 Inyo Rock Creek Lake Basin, slope west of Heart Lake. 3293 Comment
  RSA93087  Erigeron pygmaeus F. W. Peirson 1921-8-8 2525 Inyo Piute Pass, Sierra Nevada. 3277 Comment
  RSA93223  Tonestus peirsonii F. W. Peirson 1919-8-27 1404 Inyo Sawmill Canyon east slope of Sierra Nevada. 2957 Comment
  RSA93636  Antennaria dimorpha F. W. Peirson 1932-5-7 9916 Inyo Along ridges at head of North Fork of Hanaupah canyon, Panamint Mts. 2668 Comment
  RSA93643  Antennaria umbrinella F. W. Peirson 1937-8-9 12191 Inyo Above and to the north of Mono Pass (Rock Creek Lake Basin). 3674 Comment
  RSA93732  Acamptopappus shockleyi F. W. Peirson 1932-5-6 9903 Inyo Wild Rose Canyon, Panamint Mts. 1143 Comment
  RSA93850  Baileya pleniradiata F. W. Peirson 1921-8-2 2774 Inyo 1 miles S of Olanche, Owens Valley Comment
  RSA9447  Silene bernardina F. W. Peirson 1931-7-20 9447 Inyo Heart Lake, Rock Creek Lake Basin 3262 Comment
  RSA94515  Arnica amplexicaulis F. W. Peirson 1930-8-9 9159 Inyo In Ruby Stream, Rock Creek Lake Basin, northern Inyo Co. 3323 Comment
  RSA94543  Packera cana F. W. Peirson 1933-8-5 10776 Inyo on the Tranverse Ridge, Rock Creek Lake Basin 3413 Comment
  RSA94574  Artemisia cana subsp. bolanderi F. W. Peirson 1931-7-30 9107 Inyo Rock Creek Lake Basin, high up on escarpment at Heart Lake. Comment
  RSA94698  Senecio werneriifolius F. W. Peirson 1930-8-5 9098 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3598 Comment
  RSA94872  Arnica chamissonis subsp. foliosa F. W. Peirson 1921-8-5 22571 Inyo Big Pine Creek, east slope of Sierra Nevada. 2744 Comment
  RSA94995  Agoseris aurantiaca var. aurantiaca F. W. Peirson 1930-8-9 9164 Inyo Rock Creek Lake Basin 3276 Comment
  RSA95059  Rafinesquia neomexicana F. W. Peirson 1930-4-15 8710 Inyo Plains along Amaragosa River, 1 mile south of Death Valley Junction 610 Comment
  SEINET6329625 Image available Carex vernacula F. W. Peirson 1934-7-22 s.n. Inyo Rock Creek Lake Basin Comment
  SEINET7575699 Image available Carex spectabilis Frank W. Peirson 1934-7-22 s.n. Inyo Rock Creek Lake Basin. 3383 Comment
  SEINET7575700 Image available Carex spectabilis Frank W. Peirson 1933-8-12 s.n. Inyo Rock Creek Lake Basin. 3475 Comment
  SEINET7575754 Image available Carex spectabilis Frank W. Peirson 1933-8-21 10839 Inyo Rock Creek Lake Basin. 3505 Comment
  UC1026427  Carex scopulorum var. bracteosa F. W. Peirson 1937-8-10 13604 Inyo Rock Creek Lake Basin, below camp Rock Creek Lake Basin Comment
  UC511731  Adiantum aleuticum Frank W. Peirson 1933-8-18 Inyo w shore Long Lake; Rock Creek Lake Basin 3246 Comment
  UC511848  Ranunculus eschscholtzii Frank W. Peirson 1933-8-10 10783 Inyo slope above Ruby Lake; Rock Cr. Lake Basin 3474 Comment
  UC511852  Antennaria rosea Frank W. Peirson 1933-8-18 10794 Inyo Long Lake (n shore) Rock Cr. Lake Basin 3246 Comment
  UC511858  Agoseris aurantiaca var. aurantiaca Frank W. Peirson 1933-8-7 Inyo slope w, in rocky stream bed Long Lake; Rock Creek Lake Basin 3291 Comment
  UC511860  Descurainia californica Frank W. Peirson 1933-8-11 Inyo Heart Lake Rock Creek Lake Basin (along the foot of the escarpment) 3230 Comment
  UC511884  Sagina saginoides Frank W. Peirson 1933-8-6 10872 Inyo Rock Creek Lake Basin, Heart Lake Meadow 3200 Comment
  UC599251  Gentianella tenella subsp. tenella Frank W. Peirson 1933-8-22 Inyo upper part Heart Lake Meadow; Rock Creek Lake Basin 3230 Comment
  UC643221  Juncus mexicanus Frank W. Peirson 1940-8-14 Inyo w of Long Lake; Rock Creek Lake Basin 3261 Comment
  UC643226  Ivesia lycopodioides subsp. megalopetala Frank W. Peirson 1940-7-31 Inyo Heart Lake Meadow; Rock Creek Lake Basin 3230 Comment
  UC698495  Eleocharis acicularis Frank W. Peirson 1931-7-31 9413 Inyo drying pond on Escarpment w Heart Lake; Rock Creek Lake Basin 3352 Comment
  CAS-BOT-BC16346  Athysanus unilateralis Frank W. Peirson 1925-3-19 5482 Kern North slope Tehachapi Pass. 609 Comment
  CAS-BOT-BC201411  Lupinus albifrons var. albifrons Frank W. Peirson 1930-5-13 8830 Kern Kern River 844 Comment
  CAS-BOT-BC29895  Achyrachaena mollis F. W. Peirson 1925-3-19 5502 Kern north slope of Tehachapi 457 Comment
  JEPS23433  Camissonia kernensis subsp. kernensis Frank W. Peirson 9960 Kern e slope Walker Pass; Sierra Nevada 1371 Comment
  JEPS5534  Asclepias cordifolia Frank W. Peirson 1927-5-28 7312 Kern near Democrat Springs (Kern River Road, 22 mi from Bakersfield) 609 Comment
  PASA1560  Petalonyx nitidus Frank W. Peirson 1927-5-29 Kern Red Rock Canyon, Foot of rocky hills opposite sculptured rocks Comment
  POM128670  Malacothamnus orbiculatus F. W. Peirson 1927-5-29 7320 Kern Just south of Tulare County line, Kern River. 845 Comment
  POM128672  Chamaesyce vallis-mortae F. W. Peirson 1927-5-29 7334 Kern Red Rock Canyon, W Mojave Desert. Comment
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Jan 8 2012
  POM171944  Chorizanthe membranacea F. W. Peirson 1930-5-14 8844 Kern Kern River 823 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
  POM231937  Calystegia occidentalis subsp. occidentalis F. W. Peirson 1937-5-30 12078 Kern Open flat about 1 mile below the White Oak Lodge, Cottonwood Creek. 1524 Comment
  RSA65078  Eriogonum gossypinum F. W. Peirson 1925-3-19 5728 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA66018  Eriogonum nudum var. westonii F. W. Peirson 1927-5-27 7319 Kern Just south of Tulare County line, Kern River. 845 Comment
  RSA66155  Erysimum capitatum var. capitatum F. W. Peirson 1930-5-15 8882 Kern Greenhorn Range, hills southeast of Glennville 1006 Comment
  RSA66741  Eschscholzia minutiflora F. W. Peirson 1930-5-13 8810 Kern Red Rock Canyon. 884 Comment
  RSA66808  Streptanthella longirostris F. W. Peirson 1927-5-7 7272 Kern Muroc (10 miles south) Comment
  RSA68801  Delphinium hansenii subsp. arcuatum F. W. Peirson 1927-5-28 7316 Kern Kern River road, 22 miles from Bakersfield 610 Comment
  RSA69494  Mirabilis laevis var. retrorsa F. W. Peirson 1930-5-12 8795 Kern 8 miles east of Mojave Comment
  RSA70201  Allium campanulatum F. W. Peirson 1933-7-9 10696 Kern 2 miles south of Summit Camp, Greenhorn Mountains. Alt. 6800 ft. 2073 Comment
  RSA71110  Calystegia occidentalis subsp. fulcrata F. W. Peirson 1937-5-30 12078 Kern Open flat about 1 mile below the White Oak Lodge, Cottonwood Creek. 1524 Comment
  RSA71821  Gilia capitata subsp. abrotanifolia F. W. Peirson 1930-5-13 8837 Kern River embankment, Kern River. 845 Comment
  RSA71860  Allophyllum gilioides F. W. Peirson 1930-5-14 8860 Kern Road from Kernville to Glenville, Greenhorn Range 1601 Comment
  RSA71878  Gilia cana subsp. speciformis F. W. Peirson 1928-4-4 7825 Kern 11 miles north of Johannesburg Comment
  RSA72255  Camissonia claviformis subsp. claviformis F. W. Peirson 1930-5-12 8796 Kern 8 miles east of Mojave Comment
  RSA73067  Leptosiphon montanus F. W. Peirson 1927-5-28 7313 Kern Kern River road, 22 miles from Bakersfield 610 Comment
  RSA74145  Phacelia distans F. W. Peirson 1930-5-13 8818 Kern 5 miles north of Ricardo, Indian Wells Valley 1006 Comment
  RSA74513  Phacelia pachyphylla F. W. Peirson 1930-5-13 8812 Kern Red Rock Canyon; western Mojave Desert. 884 Comment
  RSA74775  Phacelia purpusii F. W. Peirson 1933-7-9 10702 Kern On summit of hill between 100 and 200 yards west of Summit Camp, Greenhorn Mountains. 2073 Comment
  RSA75403  Camissonia boothii subsp. desertorum F. W. Peirson 1930-5-13 8811 Kern Red Rock Canyon. 884 Comment
  RSA77738  Viola purpurea F. W. Peirson 1933-7-9 10692 Kern 2 miles south of Summit Camp, Greenhorn Mountains. 2073 Comment
  RSA80077  Mimulus dudleyi F. W. Peirson 1935-3-16 11405 Kern In crevices of large rock, north slope of Tehachapi Range along the Arvin cut-off. 457 Comment
  RSA82380  Scutellaria siphocampyloides F. W. Peirson 1930-5-13 8841 Kern Near south bank of Cannel Creek, Kern River. 692 Comment
  RSA83452  Mentha canadensis F. W. Peirson 1908-7-11 s.n. Kern Little Kern River, Southern Sierra Nevada. Comment
  SD87562  Eriastrum pluriflorum subsp. sherman-hoytiae Frank W. Peirson 1927-5-7 7268 Kern 12 miles south of Muroc. Comment
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Aug 9 2016
  SD87574  Chorizanthe membranacea Frank W. Peirson 1930-5-14 8844 Kern Kern River; steep hill slope near Power house 822 Comment
  SD87716  Collinsia bicolor var. bicolor Frank W. Peirson 1927-5-28 7314 Kern Kern River Road, 22 miles from Bakersfield 609 Comment
  SD87752  Lessingia nana Frank W. Peirson 1933-7-9 10683 Kern Walker Basin, on road from Caliente to Bodfish Comment
  UC511743  Sidalcea ranunculacea Frank W. Peirson 1933-7-9 10691 Kern in dry meadow about 2 mi s Summit Camp (Summit Greenhorn Mts.); , s of Summit Camp 2072 Comment
  UC511774  Hollisteria lanata Frank W. Peirson 1933-7-10 10703 Kern about 20 mi from Bakersfield (road from Woody to Bakersfield) Comment
  UC511910  Lupinus microcarpus var. densiflorus Frank W. Peirson 1933-7-9 10679 Kern on road from Caliente to Bodfish about 6 mi n Bodfish Comment
  UC511911  Clarkia xantiana Frank W. Peirson 1933-7-9 10680 Kern about 6 mi n Caliente (road from Caliente to Bodfish) Comment
  UC599233  Acmispon procumbens var. procumbens Frank W. Peirson 1937-5-30 12076 Kern about 1 mi below White Oak Lodge (Cottonwood Creek); Tehachapi Mts., Cottonwood Creek 1524 Comment
  UC635073  Chorizanthe spinosa Frank W. Peirson 1927-5-7 7274 Kern 3 mi s Muroc; s of Muroc Comment
  UC908844  Gilia latiflora subsp. davyi F. W. Peirson 1925-3-18 5472 Kern s slope of Tehachapi Pass Comment
  UCR136651  Solanum elaeagnifolium F. W. Peirson 1929-7-27 8566 Kern Mojave Desert, Mojave, along railroad track at S end of town 835 Comment
  CAS-BOT-BC327661  Layia pentachaeta F. W. Peirson 1925-3-19 5507 Kern N. slope Tehachapi Comment
  CAS-BOT-BC438076  Lithophragma parviflorum Frank W. Peirson 1930-5-15 8889 Kern hills nw of Glenville, Greenhorn mts. 1066 Comment
  CAS-BOT-BC89942  Lepidium nitidum Frank W. Peirson 1925-3-19 5506 Kern North slope of Tehchapi. 457 Comment
  PASA1584  Balsamorhiza deltoidea Frank W. Peirson 1930-5-15 Kern Hills NW. of Glenville, Greenhorn Mts. 1066 Comment
  PASA338  Scorzonella sylvatica Frank W. Peirson 1924-3-19 Kern North slope Tehchapi Pass 609 Comment
  RSA0004551  Oenothera kernensis F. W. Peirson 1930-5-13 8822 Kern East slope of Walker Pass, Freeman Canyon. 1372 Comment
  RSA0024764  Ribes roezlii F. W. Peirson 1933-7-9 10700 Kern Power line clearing at summit of Greenhorn Mountains. 2073 Comment
  RSA71819  Gilia capitata subsp. abrotanifolia F. W. Peirson 1925-3-19 5497 Kern North slope of Tehachapi Mountains. 457 Comment
  RSA75136  Nemacladus sigmoideus F. W. Peirson 1930-5-13 8821 Kern [Unspecified] 945 Comment
  RSA79809  Penstemon laetus F. W. Peirson 1933-7-9 10681 Kern Walker Basin, between Caliente and Bodfish and about 6 mi. north of the former. Comment
  RSA87044  Lupinus horizontalis var. platypetalus F. W. Peirson 1928-4-4 72828 Kern southern out skirts of Randsburg. Comment
  RSA87082  Lupinus nanus subsp. menkerae F. W. Peirson 1938-4-12 12388 Kern From fields of Lupine along first level stretch north of grade, at Arvin Cutoff, south of Bakersfield, Kern County. Comment
  RSA90077  Lotus argophyllus subsp. decorus F. W. Peirson 1930-5-15 8840 Kern Island in Kern River Comment
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Jan 7 2014
  RSA90168  Astragalus lentiginosus var. nigricalycis F. W. Peirson 1925-3-18 5496 Kern North slope of Tehachapa Pass. 762 Comment
  RSA94380  Eastwoodia elegans F. W. Peirson 1929-5-18 8405 Kern a sonsiderable colony on rolling hills on lower part of grade on N slope of Tehachapi Pass. Comment
  RSA95077  Microseris sylvatica F. W. Peirson 1930-5-15 8877 Kern Greenhorn Range, hills southeast of [Glenville]. 1067 Comment
  RSA95337  Ceanothus integerrimus var. puberulus F. W. Peirson 1933-7-9 10699 Kern Greenhorn Mountains near the summit camp. 2073 Comment
  RSA95366  Sphaeralcea ambigua subsp. ambigua F. W. Peirson 1930-5-13 8815 Kern 5 miles north of Ricardo, Indian Wells Valley 1006 Comment
  RSA97278  Lomatium dasycarpum subsp. tomentosum F. W. Peirson 1930-5-15 8899 Kern Hills northwest of Glenville, Greenhorn Range 1037 Comment
  PASA2034  Lepidium dictyotum Frank W. Peirson 1925-3-23 Kings 6 miles west of Lemoore Comment
  CAS-BOT-BC352834  Lasthenia glabrata subsp. glabrata Frank W. Peirson 1926-4-2 6588 Lake W end of Clear Lake Comment
  CAS-BOT-BC64167  Ancistrocarphus filagineus Frank W. Peirson; Mabel Peirson 1926-4-3 6613 Lake 3.3 mi. north of Middletown Comment
  JEPS33079  Allium fimbriatum var. fimbriatum F. W. Peirson 1926-4-3 6618 Lake Middletown Comment
  POM89884  Allium falcifolium F. W. Peirson 1926-4-3 6617 Lake 3.3 miles north of Middletown. Comment
  RSA65445  Lewisia rediviva F. W. Peirson 1926-4-3 6620 Lake 3.3 mi N of Middletown. Comment
  RSA65554  Minuartia californica Mabel Peirson 1926-4-3 6612 Lake 3.3 miles north of Middletown. Comment
  RSA77763  Viola douglasii F. W. Peirson 1926-4-3 6609 Lake 3.3 miles north of Middletown. Comment
  RSA79471  Collinsia sparsiflora var. arvensis F. W. Peirson 1926-4-2 6584 Lake west end of Clear Lake, Comment
  RSA82398  Salvia sonomensis F. W. Peirson 1926-4-2 6600 Lake 5 miles west of Lower Lake on Kelseyville Road Comment
  SD87807  Lessingia ramulosa Frank W. Peirson 1925-8-9 6351 Lake Near Upper Blue Lakes Comment
  UCR136652  Triphysaria eriantha F. W. Peirson 1926-4-2 6604 Lake Lower Lake Comment
  RSA407952  Orthocarpus purpurascens F. W. Peirson 1926-4-2 6606 Lake Lower Lake. Auto camp grounds. Comment
  RSA68721  Fritillaria recurva Frank W. Peirson, Mabel B. Peirson 1926-4-3 6622 Lake South of Middletown near Napa County line Comment
  RSA91546  Trifolium dichotomum F. W. Peirson, Mabel B. Peirson 1926-4-2 6579 Lake Roadside, 0.5 mile south of Clear Lake. Comment
  RSA92188  Lagophylla ramosissima F. W. Peirson 1925-8-9 6350 Lake 6 miles W of Blue Lakes. Comment
  RSA92385  Ancistrocarphus filagineus F. W. Peirson, Mabel Peirson 1926-4-3 6613 Lake 3.3 miles north of Middletown. Comment
  RSA92706  Salix exigua F. W. Peirson 1926-4-2 9602 Lake Hopland Grade to Clear Lake. Comment
  RSA95360  Ceanothus jepsonii subsp. albiflorus F. W. Peirson 1926-4-3 6610 Lake 3.3 mi N of Middletown. Comment
  RSA80410  Mimulus nanus var. mephiticus F. W. Peirson 1926-6-24 6853 Lassen Madeline Plain. Comment
  RSA94936  Tetradymia glabrata F. W. Peirson 1926-6-24 6854 Lassen On Madeline Plain Comment
  CAS-BOT-BC158001  Garrya veatchii F. W. Peirson 1919-11-30 2723 Los Angeles Eaton Canyon, San Gabriel Mts. 609 Comment
  CAS-BOT-BC208865  Lupinus breweri var. breweri F. W. Peirson 1921-6-16 2441 Los Angeles Mt. Waterman, N summit. 2316 Comment
  CAS-BOT-BC209704  Ribes quercetorum Frank W. Peirson 1922-6-3 2548 Los Angeles East of Oakgrove Canon [Canyon] Divide, Liebre Mts. Comment
  CAS-BOT-BC214319  Salvia dorrii var. pilosa Frank W. Peirson 1923-5-26 s.n. Los Angeles Rock Creek, San Gabriel Mts. 1371 Comment
  CAS-BOT-BC240956  Collinsia parryi Frank W. Peirson 1918-5-26 193 Los Angeles Toll Road to Mt. Wilson at Hennigers Flat, San Gabriel Mts. 868 Comment
  CAS-BOT-BC268205  Eriogonum umbellatum var. munzii Frank W. Peirson 1923-8-30 4684 Los Angeles San Gabriel Mts. North of Big Pines Comment
  CAS-BOT-BC277527  Chaenactis glabriuscula var. lanosa F. W. Peirson; Alice Ottley 1920-5-3 2121 Los Angeles Little Tujunga Wash at road crossing, San Gabriel Mts. 335 Comment
  CAS-BOT-BC299524  Ericameria palmeri var. pachylepis Frank W. Peirson 1921-11-11 2597 Los Angeles Bouquet Canyon Comment
  CAS-BOT-BC32931  Corethrogyne filaginifolia var. filaginifolia Frank Warrington Peirson 1923-10-7 4159 Los Angeles San Gabriel Mts. Newhall, Railroad Station Comment
  CAS-BOT-BC59208  Antennaria dimorpha F. W. Peirson 1921-6-15 2492 Los Angeles Pine Flats, headwaters of Tujunga, San Gabriel Mts. 1676 Comment
  JEPS10622  Castilleja exserta subsp. exserta Frank W. Peirson 1919-3-27 334 Los Angeles w of Arroyo Seco; San Gabriel Mountains 457 Comment
  JEPS11020  Mimulus floribundus Frank W. Peirson 1921-6-19 2456 Los Angeles Crystal Lake San Gabriel Mountains 1676 Comment
  JEPS11571  Keckiella cordifolia Frank W. Peirson 1918-6-28 205 Los Angeles e of Rubio Canyon; San Gabriel Mountains 609 Comment
  JEPS11572  Keckiella cordifolia Frank W. Peirson 1924-6-16 Los Angeles Pasadena Comment
  JEPS11603  Penstemon spectabilis var. subviscosus Frank W. Peirson 1924-6-16 Los Angeles foothills near Pasadena; San Gabriel Mountains, foothills near Pasadena Comment
  JEPS1175  Phacelia mohavensis Frank W. Peirson 1921-6-15 962 Los Angeles Pine Flats to Chilao; San Gabriel Mountains Comment
  JEPS12565  Deinandra fasciculata Frank W. Peirson 1918-6-28 236 Los Angeles e of Rubio Canyon; San Gabriel Mountains 609 Comment
  JEPS12807  Lonicera interrupta Frank W. Peirson 1918-6-15 264 Los Angeles Mint Canyon San Gabriel Mountains Comment
  JEPS12859  Lonicera subspicata var. denudata Frank W. Peirson 1918-6-30 217 Los Angeles Mt. Wilson Toll Road San Gabriel Mountains 1371 Comment
  JEPS1287  Phacelia tanacetifolia Frank W. Peirson 1920-3-28 2101 Los Angeles Tujunga Canyon San Gabriel Mountains 457 Comment
  JEPS1713  Eucrypta chrysanthemifolia var. chrysanthemifolia Frank W. Peirson 1918-6-10 167 Los Angeles foothills e Rubio Canyon; San Gabriel Mountains 609 Comment
  JEPS18578  Brickellia californica Frank W. Peirson 1918-10-21 221 a Los Angeles West Fork San Gabriel River San Gabriel Mountains, West Fork San Gabriel River 1066 Comment
  JEPS19138  Ericameria parishii var. parishii Frank W. Peirson 1918-8-16 224 Los Angeles Baldy San Gabriel Mountains, Mt. San Antonio, Baldy 2133 Comment
  JEPS19264  Ericameria cooperi var. cooperi F. W. Peirson 1919-5-10 411 Los Angeles Arrastre Canyon, n side of San Gabriel Mts. San Gabriel Mts. 838 Comment
  JEPS2116  Phacelia austromontana Frank W. Peirson 1928-6-2 7940 Los Angeles South Fork Rock Creek San Gabriel Range 1828 Comment
  JEPS22260  Symphyotrichum greatae Frank W. Peirson 1918-10-16 274 Los Angeles Pacoima Canon San Gabriel Mountains 518 Comment
  JEPS2623 Image available Habenaria leucostachys var. virida F. W. Peirson 1918-7-8 12 Los Angeles San Antonio Canyon San Gabriel Mts.; San Antonio Canyon, San Gabriel Mts. 1828 Comment
  JEPS26402  Malacothamnus marrubioides F. W. Peirson 1921-7-1 774 Los Angeles Arraster Creek, San Gabriel Mts., Los Angeles Co. Comment
  JEPS27573  Gayophytum oligospermum Frank W. Peirson 1921-7-3 2483 Los Angeles Vincent Gulch San Gabriel Mountains 1981 Comment
  JEPS27793  Lotus strigosus Frank W. Peirson 1918-5-26 323 Los Angeles Summit Mt. Wilson San Gabriel Mountains 1737 Comment
  JEPS31693  Eremothera boothii subsp. decorticans Frank W. Peirson 1928-6-2 7949 Los Angeles Rock Cr. San Gabriel Mts. (main stream bed) 1371 Comment
  JEPS31726  Camissonia strigulosa Frank W. Peirson 1919-5-10 405 Los Angeles Arraster Creek San Gabriel Mountains 914 Comment
  JEPS32410  Solidago confinis Frank W. Peirson 1920-9-12 1230 Los Angeles Bear Flat Baldy Trail, San Grabriel Mts. 1676 Comment
  JEPS34547  Allium lacunosum Frank W. Peirson 1919-5-10 426 Los Angeles Arrastre Creek San Gabriel Mountains 853 Comment
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Jan 1 2017
  JEPS34704  Eriophyllum confertiflorum var. confertiflorum F. W. Peirson 1924-6-16 Los Angeles Pasadena Comment
  JEPS34900  Hulsea vestita subsp. gabrielensis F. W. Peirson 1921-6-15 2440 Los Angeles between Pine Flats and Chilao; San Gabriel Mts. 1676 Comment
  JEPS36473  Crepis acuminata F. W. Peirson 1921-7-17 2507 Los Angeles Prairie Fork <of> San Gabriel River San Gabriel Mts. 2011 Comment
  JEPS37248  Senecio flaccidus var. douglasii F. W. Peirson 1919-6-13 481 Los Angeles Rock Creek San Gabriel Mts. 1325 Comment
  JEPS37498  Packera ionophylla F. W. Peirson 1919-6-16 476 Los Angeles South Fork of Rock Creek San Gabriel Mountains 1676 Comment
  JEPS37567  Rafinesquia californica F. W. Peirson 1918-6-4 251 Los Angeles foothills e Rubio Canyon (San Gabriel Mts., near Altadena); San Gabriel Mts. 609 Comment
  JEPS37778  Quercus wislizeni Frank W. Peirson 1919-5-10 403 Los Angeles Mt. Gleason San Gabriel Mts. Comment
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Aug 21 2014
  JEPS38027  Quercus agrifolia Frank W. Peirson 1919-4-5 369 Los Angeles Mt. Wilson Toll Road San Gabriel Mountains Comment
  JEPS41667  Heuchera caespitosa Frank W. Peirson 1918-6-10 67 Los Angeles n of Pasadena (n slope of Mt. Lowe near the summit); San Gabriel Mountains, Mt. Lowe 1676 Comment
  JEPS41825  Conyza canadensis Frank W. Peirson 1918-10-16 273 Los Angeles Pacoima Canyon San Gabriel Mts., Pacoima Canyon 518 Comment
  JEPS41979  Rhamnus crocea Frank W. Peirson 1919-3-27 339 Los Angeles w of Arroyo Seco; San Gabriel Mountains 396 Comment
  JEPS42305  Ceanothus greggii var. vestitus F. W. Peirson 1919-6-14 415 a Los Angeles san Gabriel Mts. 1371 Comment
  JEPS42399  Ceanothus integerrimus Frank W. Peirson 1918-5-26 111 Los Angeles Toll Rd San Gabriel Range, Mt. Wilson 1143 Comment
  JEPS42675  Acer macrophyllum Frank W. Peirson 1918-6-17 107 Los Angeles Rock Creek San Gabriel Mts., Rock Creek 1950 Comment
  JEPS4377  Trifolium willdenovii Frank W. Peirson 1919-5-14 423 Los Angeles Eaton Canyon San Gabriel Mtns 731 Comment
  JEPS44022  Epilobium canum subsp. canum Frank W. Peirson 1918-10-21 280 Los Angeles West Fork San Gabriel River 1066 Comment
  JEPS44765  Rubus ursinus Frank W. Peirson 1919-4-19 380 Los Angeles Pacoima Canyon San Gabriel Mts., Pacoima Canyon 609 Comment
  JEPS44779  Adenostoma fasciculatum Frank W. Peirson 1918-6-1 78 Los Angeles Mt. Wilson Toll Rd. 609 Comment
  JEPS46353  Swertia neglecta Frank W. Peirson 1918-6-17 145 Los Angeles n side San Gabriel Mts; San Gabriel Mts., Rock Creek 1524 Comment
  JEPS50884  Silene lemmonii Frank Peirson 1918-6-10 39 Los Angeles Mt. Lowe 1371 Comment
  JEPS51093  Stellaria media Frank W. Peirson 1919-4-19 368 Los Angeles Pacoima Canyon; San Gabriel Mountains 609 Comment
  JEPS51094  Stellaria nitens Frank W. Peirson 1918-5-26 43 Los Angeles Henninger Flats 868 Comment
  JEPS51335  Cerastium glomeratum Frank W. Peirson 1919-5-18 438 Los Angeles Monrovia Canyon San Gabriel Mts., Monrovia Canyon 457 Comment
  JEPS5222  Castilleja applegatei subsp. martinii Frank W. Peirson 1921-7-17 2505 Los Angeles Prairie Fork San Gabriel Mountains, San Gabriel River 2011 Comment
  JEPS52583  Calandrinia ciliata Frank W. Peirson 1919-3-30 356 Los Angeles Tujunga Canyon San Gabriel Mountains 441 Comment
  JEPS53034  Arabis glabra Frank W. Peirson 1919-4-9 390 Los Angeles Rubio Canyon San Gabriel Mountains 548 Comment
  JEPS53159  Boechera repanda Frank W. Peirson 1919-6-14 507 Los Angeles Rock Creek 1706 Comment
  JEPS53437  Descurainia pinnata Frank W. Peirson 1919-1-25 309 Los Angeles Arroyo Seco; San Gabriel Mountains 381 Comment
  JEPS55285  Lathyrus vestitus var. vestitus Frank W. Peirson 1920-5-16 2137 Los Angeles Tujunga Canyon San Gabriel Mountains 472 Comment
  JEPS55394  Lotus crassifolius F. W. Peirson 1918-6-17 103 Los Angeles Rock Creek San Gabriel Mts. 1524 Comment
  JEPS55921  Lotus salsuginosus F. W. Peirson 1918-6-4 94 Los Angeles hills e Rubio Canyon; San Gabriel Mts. 609 Comment
  JEPS57016  Eriogonum elongatum var. elongatum Frank W. Peirson 1918-9-7 19 Los Angeles Toll Road (automobile road up Mt. Wilson) Mt. Wilson Comment
  JEPS57994  Pterostegia drymarioides Frank W. Peirson 1918-5-19 17 Los Angeles Millards Canyon San Gabriel Mts., Millards Canyon Comment
  JEPS58687  Chrysolepis sempervirens Frank W. Peirson 1918-7-8 15 Los Angeles Baldy (= Mt. San Antonio); San Gabriel Mts. 2590 Comment
  JEPS59145  Cirsium occidentale var. californicum Frank W. Peirson 1918-6-1 248 Los Angeles San Gabriel Mts., Eaton Canyon 640 Comment
  JEPS6200  Collinsia childii Frank W. Peirson 1920-5-28 2156 Los Angeles Bear Canyon San Gabriel Mountains ((San Antonio tributary)) 1371 Comment
  JEPS62190  Veratrum californicum var. californicum Frank W. Peirson 1922-7-6 3190 Los Angeles Big Pine Meadows San Gabriel Mountians 2087 Comment
  JEPS62516  Salazaria mexicana Frank W. Peirson 1919-6-15 498 Los Angeles Rock Creek; San Gabriel Mts., Rock Creek 1341 Comment
  JEPS62908  Scutellaria siphocampyloides Frank W. Peirson 1921-6-15 1051 Los Angeles Chilao; Pine Flats Region, San Gabriel Mountains, Chilao 1676 Comment
  JEPS63248  Lepechinia fragrans Frank W. Peirson 1918-6-30 177 Los Angeles San Gabriel Mountains, Mount Wilson, Toll Road Mount Wilson; San Gabriel Mountains, , Toll Road 1066 Comment
  JEPS63313  Monardella cinerea Frank W. Peirson 1918-6-8 182 Los Angeles Baldy (Mt. San Antonio); San Gabriel Mts. 2286 Comment
  JEPS63940  Toxicodendron diversilobum Frank W. Peirson 1919-3-6 325 Los Angeles Eaton Canyon San Gabriel Mts., Eaton Canyon 396 Comment
  JEPS64479  Piperia cooperi Frank W. Peirson 1919-5-14 449 Los Angeles Eaton Canyon San Gabriel Mountains 609 Comment
  JEPS65123  Lupinus elatus Frank W. Peirson 1918-6-10 89 Los Angeles Summit of San Gabriel Peak San Gabriel Peak Comment
  JEPS65650  Rupertia physodes F. W. Peirson 1918-5-26 93 Los Angeles Henninger Flats San Gabriel Mts. 868 Comment
  JEPS65971  Trifolium microcephalum Frank W. Peirson 1919-4-19 379 Los Angeles Pacoima Canyon San Gabriel Mtns 685 Comment
  JEPS68011  Plagiobothrys collinus Frank W. Peirson 1921-6-15 997 Los Angeles Pine Flats to Chilao; San Gabriel Mountains 1676 Comment
  JEPS69008  Eriastrum densifolium Frank W. Peirson 1919-7-29 521 Los Angeles Mt. Wilson San Gabriel Mts. (summit) 1767 Comment
  JEPS7519  Madia exigua Frank W. Peirson 1921-6-21 2446 Los Angeles w fork of the San Gabriel River San Gabriel Mts., Angeles National Forest 609 Comment
  JEPS7558  Penstemon heterophyllus var. australis F. W. Peirson 1918-6-10 202 Los Angeles Mt. Lowe San Gabriel Mts., Mt. Lowe 762 Comment
  JEPS85719  Penstemon spectabilis var. subviscosus Frank W. Peirson 1924-6-16 Los Angeles near Pasadena (foothills of the San Gabriel Mountains); San Gabriel Mountains Comment
  JEPS908  Tauschia arguta F. W. Peirson 1918-5-19 134 Los Angeles Echo Mt.; San Gabriel Mts., Echo Mt. 609 Comment
  JEPS9776  Castilleja miniata Frank W. Peirson 1919-6-14 490 Los Angeles Big Rock Creek; San Gabriel Mountains 1524 Comment
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Jan 31 2008
  PASA1272  Berberis nevinii Frank W. Peirson 1920-3-28 Los Angeles Arroyo Seco 335 Comment
  PASA2198  Chaenactis stevioides Frank W. Peirson 1923-5-25 Los Angeles Rock Creek, San Gabriel Mts. 1295 Comment
  PASA2247  Ribes cereum Frank W. Peirson 1919-6-4 Los Angeles Icehouse Canyon Divide, San Gabriel Mts. 2407 Comment
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Jun 24 2016
  PASA2301  Hemizonia clementina Frank W. Peirson 1923-4-9 Los Angeles Southeastward from Wilsons Cove, San Clemente Island Comment
  PASA321  Malacothrix clevelandii Frank W. Peirson 1919-5-21 Los Angeles Arroyo Seco, San Gabriel Mts. 685 Comment
  POM11156  Cystopteris fragilis F. W. Peirson 1920-9-15 s.n. Los Angeles Mt. San Antonio, north slope 2819 Comment
  POM162487  Arenaria macradenia var. arcuifolia F. W. Peirson 1929-7-1 8430 Los Angeles Aliso Creek at Tie Canyon. 1356 Comment
  POM203881  Mucronea californica Mabel Peirson 1934-5-13 11145 Los Angeles Tujunga Canyon, San Gabriel Range. 457 Comment
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Dec 7 2016
  POM46873  Brickellia nevinii F. W. Peirson 1924-12-5 5382 Los Angeles San Gabriel Peak at head of Eaton Canyon 1646 Comment
  POM47663  Lithophragma tenellum F. W. Peirson 1921-6-16 4690 Los Angeles Summit of Mt. Waterman, San Gabriel Mountains 2317 Comment
  POM48474  Baccharis salicifolia F. W. Peirson 1924-12-3 5384 Los Angeles San Gabriel Wash at Foothill Boulevard, Azusa. Comment
  POM9733  Equisetum laevigatum F. W. Peirson 1920-4-25 s.n. Los Angeles Arroyo Seco, Pasadena 411 Comment
  RSA442865  Sphaeralcea emoryi subsp. variabilis F. W. Peirson 1921-5-18 s.n. Los Angeles Palmdale, Antelope Valley. Comment
  RSA48475  Arctostaphylos glauca F. W. Peirson 1924-12-5 5383 Los Angeles Little Santa Anita Trail 915 Comment
  RSA65169  Dodecahema leptoceras F. W. Peirson 1951-1 1777 Los Angeles Rubio Wash, Altadena Comment
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Dec 17 2015
  RSA65201  Mucronea californica F. W. Peirson 1934-5-13 11145 Los Angeles lower parts of Tujunga Canyon wiers end of San Gabrial Mountains. 457 Comment
  RSA65385  Atriplex pacifica F. W. Peirson 1923-4-11 3461 Los Angeles In canyon below farm buildings at Eagle Ranch, San Clemente Island Comment
  RSA65434  Calandrinia breweri F. W. Peirson 1918-5-4 1859 Los Angeles Summit of Santa Monica Range, above Brents on the Malibu Comment
  RSA65596  Loeflingia squarrosa F. W. Peirson 1920-5-3 2123 Los Angeles Little Tujunga Wash, west end of San Gabriel Mts. 335 Comment
  RSA65638  Vaccaria hispanica F. W. Peirson 1908-1 1864 Los Angeles 1077 New York Ave, Altadena. Comment
  RSA65821  Descurainia pinnata subsp. menziesii F. W. Peirson 1918-03 1900 Los Angeles At Altadena. Comment
  RSA65954  Eriogonum umbellatum var. canifolium F. W. Peirson 1929-7-1 8446 Los Angeles Mt. Pacifico: upper part of trail, San Gabriel Mountains. 1982 Comment
  RSA66080  Brassica rapa F. W. Peirson 1919-1-26 306 Los Angeles Hills east of Rubio Canyon 548 Comment
  RSA66086  Tropidocarpum gracile F. W. Peirson 1927-3-19 7117 Los Angeles Seminole Hot Springs. Santa Monica Mts. Comment
  RSA66268  Eschscholzia californica var. peninsularis F. W. Peirson 1930-5-12 8789 Los Angeles Open desert along boulevard nearly opposite Acton, about 3 miles north of Mint Canyon summit. Comment
  RSA66294  Canbya candida F. W. Peirson 1921-5-19 2412 Los Angeles Little Rock Creek: north base of San Gabriel Mountains. 1037 Comment
  RSA66342  Eriogonum brachyanthum F. W. Peirson 1921-5-19 2656 Los Angeles Little Rock Creek: north base of San Gabriel Mountains 976 Comment
  RSA66555  Draba corrugata var. corrugata F. W. Peirson 1920-9-12 4184 Los Angeles Summit of Baldy (Mt. San Antonio) 3049 Comment
  RSA68650  Calochortus kennedyi var. kennedyi Frank W. Peirson 1923-5-26 4099 Los Angeles Rock Creek, north slope of San Gabriel Mts., 1524 Comment
  RSA68668  Calochortus albus Frank W. Peirson 1923-5-21 8605 Los Angeles Fish Canyon, San Gabriel Mountains. 610 Comment
  RSA68752  Limonium californicum F. W. Peirson 850 Los Angeles Long Beach. Comment
  RSA68760  Delphinium patens subsp. hepaticoideum F. W. Peirson 632 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA68766  Delphinium cardinale F. W. Peirson 1923-5-27 5323 Los Angeles Rock Creek, north San Gabriel Mountains 1296 Comment
  RSA68978  Plantago hirtella var. galeottiana F. W. Peirson 1179 Los Angeles Near Kewen Lake, Pasadena Comment
  RSA69441  Frasera neglecta F. W. Peirson 1921-6-15 2670 Los Angeles Pine flats stream, north slope 1494 Comment
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Feb 25 2015
  RSA69664  Juncus macrophyllus F. W. Peirson 1920-9-17 2288 Los Angeles San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA69698  Mentzelia congesta F. W. Peirson 1923-5-25 3523 Los Angeles along stream on south side of canyon of Rock Creek, San Gabriel Mountains. 1296 Comment
  RSA69897  Fraxinus velutina F. W. Peirson 1922-6-3 3081 Los Angeles 3 miles west of Elizabeth Lake. 1113 Comment
  RSA69944  Nitrophila occidentalis F. W. Peirson 1924-10-19 5229 Los Angeles Clearwater. Comment
  RSA69953  Krascheninnikovia lanata F. W. Peirson 1926-4-26 6653 Los Angeles about 1 mile east of Palmdale Comment
  RSA70144  Triteleia dudleyi F. W. Peirson 1921-6-16 2458 Los Angeles along stream north of Mt. Waterman, San Gabriel Mountains 1860 Comment
  RSA70188  Yucca whipplei var. whipplei Frank W. Peirson 1920-4-26 461 Los Angeles Santa Anita Wash above Foothill Blvd. 213 Comment
  RSA70338  Asclepias californica F. W. Peirson 1923-5-26 3541 Los Angeles Rock Creek Divide 2011 Comment
  RSA70455  Allium burlewii F. W. Peirson 1918-6-17 4 Los Angeles Summit of North Baldy, San Gabriel Mts. 2820 Comment
  RSA70471  Allium lacunosum var. davisiae F. W. Peirson 1932-4-17 9851 Los Angeles Below Lovejoy Dam, Lovejoy Buttes, southwestern Mojave Desert. 762 Comment
  RSA70493  Erodium moschatum F. W. Peirson 1919-2-28 2023 Los Angeles At Frank Peirson residence, 1085 New York Drive, Altadena Comment
  RSA71820  Gilia capitata subsp. abrotanifolia F. W. Peirson 1921-4-21 2831 Los Angeles Trail below Sycamore Flat, on way to San Dimas, San Gabriel Mountains. 793 Comment
  RSA71858  Allophyllum divaricatum F. W. Peirson 1923-5-21 3515 Los Angeles Fish Canyon, San Bernardino Mountains 686 Comment
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Jun 18 2018
  RSA72103  Epilobium canum subsp. canum F. W. Peirson 1918-10-15 279 Los Angeles Foot of Echo Mountain Trail to Mount Lowe and San Gabriel Range. 549 Comment
  RSA72140  Gayophytum heterozygum F. W. Peirson 1920-6-10 130 Los Angeles San Gabriel Mts., summit of Mt. Wilson 1723 Comment
  RSA72175  Epilobium ciliatum subsp. ciliatum F. W. Peirson 1951-08 s.n. Los Angeles Kewen Lake, Pasadena Comment
  RSA73031  Leptosiphon breviculus F. W. Peirson 1921-6-18 4710 Los Angeles divide north of Mt. Islip 2042 Comment
  RSA73283  Linanthus pungens F. W. Peirson 1921-6-16 2828 Los Angeles Ridge Westward from summit of Mt. Waterman, San Gabriel Mts. 2256 Comment
  RSA73345  Clarkia xantiana F. W. Peirson 1928-6-2 7943 Los Angeles Trail up South Fork of Rock Creek. 1677 Comment
  RSA75441  Camissonia hirtella F. W. Peirson 1919-5-10 4698 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains. 915 Comment
  RSA76940  Rhus trilobata F. W. Peirson 1919-5-10 418 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains 915 Comment
  RSA76951  Eremocarpus setiger F. W. Peirson 1919-10-26 2046 Los Angeles Along Pacific Electric tracks to Rubio Canyon, San Gabriel Mts. 549 Comment
  RSA77034  Malacothamnus fremontii F. W. Peirson 1917-5-13 68 Los Angeles Roadside near village of Little Rock, north side of San Gabriel Mountains. Comment
  RSA77353  Ceanothus greggii var. vestitus F. W. Peirson 1918-6-16 4448 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1448 Comment
  RSA79455  Scrophularia californica F. W. Peirson 1911-04 191 Los Angeles Laurel Canyon. Comment
  RSA79753  Keckiella ternata subsp. septentrionalis F. W. Peirson 1929-6-30 8425 Los Angeles Just below the old mill on the Tie Canyon stream, Aliso Creek, San Gabriel Mountians. 1341 Comment
  RSA79774  Keckiella cordifolia F. W. Peirson 205 Los Angeles Mt. Lowe, San Gabriel Mountains. Comment
  RSA79842  Penstemon heterophyllus F. W. Peirson 1929-7-1 8431 Los Angeles Aliso Creek at Tie Canyon, Along bank. 1357 Comment
  RSA79860  Penstemon spectabilis subsp. subviscosus F. W. Peirson 1920-4-28 206 Los Angeles San Anita Wash, south base of San Gabriel Mountains. 213 Comment
  RSA80187  Antirrhinum coulterianum F. W. Peirson 1919-2-12 188 Los Angeles Field near foot of Lukens Trail, San Gabriel Mountains. 610 Comment
  RSA80384  Solanum umbelliferum F. W. Peirson 1919-6-15 1082 Los Angeles Rock Creek, north slope of San Gabriel Mountains. 1296 Comment
  RSA80496  Mimulus fremontii var. fremontii F. W. Peirson 1905-5-28 1122 Los Angeles Rubio Canyon wash above New York Ave., Altadena. Comment
  RSA80756  Cryptantha nevadensis var. rigida F. W. Peirson 1919-5-10 5811 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains 915 Comment
  RSA81469  Castilleja applegatei subsp. martinii F. W. Peirson 1918-5-19 209 Los Angeles Millard's Canyon, south base of San Gabriel Mts. Comment
  RSA81491  Castilleja linariifolia F. W. Peirson 1919-6-14 490 Los Angeles Rock Creek, north slope of San Gabriel Mts. 1524 Comment
  RSA82440  Salvia leucophylla F. W. Peirson 1906-7-16 1055 Los Angeles Big ditch north of Elysian Park, Los Angeles. Comment
  RSA82530  Marrubium vulgare F. W. Peirson 1920-4-22 1048 Los Angeles At 1085 New York Drive, Altadena. Comment
  RSA83354  Dudleya cymosa subsp. pumila F. W. Peirson 1926-6-2 7938 Los Angeles Trail up south fork Rock Creek. 1828 Comment
  RSA83396  Dudleya cymosa subsp. pumila F. W. Peirson 1918-5-26 452 Los Angeles toll road to Mt. Wilson Comment
  RSA83442  Lycopus americanus F. W. Peirson 1908-9-2 1075 Los Angeles Banks of Rio Hondo, El Monte. Comment
  RSA84227  Monardella linoides F. W. Peirson 1922-7-5 3160 Los Angeles Elevation north of Big Pines called La Montaine 2226 Comment
  RSA84282B  Equisetum hyemale var. affine F. W. Peirson 1920-4-25 8450 B Los Angeles Arroyo Seco, Pasadena 411 Comment
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Jan 4 2014
  RSA84505  Ribes indecorum F. W. Peirson 1918-11-1 299 Los Angeles along top of ridge on trail to Switzer s Camp, Arroyo Seco 945 Comment
  RSA84516  Ribes aureum var. gracillimum F. W. Peirson 1921-3-6 687 Los Angeles Foothill Blvd. 1 mile east of Monrovia Comment
  RSA84842  Ribes nevadense F. W. Peirson 1919-5-10 688 Los Angeles Trail from Arraster [Arrastre] Creek to Mt. Gleason, San Gabriel Mts. 1677 Comment
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Aug 21 2014
  RSA84848  Ribes cereum var. cereum F. W. Peirson 1922-7-6 4433 Los Angeles Big Pines 2104 Comment
  RSA84973  Ribes roezlii F. W. Peirson 1919-6-14 690 Los Angeles near top of Big Rock Creek 1951 Comment
  RSA85204  Horkelia cuneata subsp. puberula F. W. Peirson 1923-3-23 4278 Los Angeles San Antonio Wash at Foothill Blvd., Claremont. Comment
  RSA85522  Ribes amarum F. W. Peirson 1928-2-19 7686 Los Angeles Arroyo Seco 610 Comment
  RSA85771  Drymocallis glandulosa var. reflexa F. W. Peirson 1918-6-30 81 Los Angeles Summit of Mt. Wilson, San Gabriel Mountains. Comment
  RSA85787  Drymocallis glandulosa var. wrangelliana F. W. Peirson 696 Los Angeles Laurel Canyon Comment
  RSA86195  Cystopteris fragilis F. W. Peirson 1920-9-15 2839 Los Angeles Mt. San Antonio, north slope 2819 Comment
  RSA86531  Pinus flexilis F. W. Peirson 3997 Los Angeles Blue Ridge 2591 Comment
  RSA86677  Cercocarpus betuloides F. W. Peirson 1927-3-19 7115 Los Angeles Seminole Hot Springs. Santa Monica Mts. Comment
  RSA86711  Lolium temulentum F. W. Peirson 1918-4-28 1607 Los Angeles Road east and south of El Monte. Comment
  RSA86729  Avena fatua F. W. Peirson 1918-04 1599 Los Angeles At 1085 New York Drive, Altadena Comment
  RSA86773  Vulpia myuros var. hirsuta F. W. Peirson 1918-04 1566 Los Angeles New York Drive, Altadena Comment
  RSA86782  Vulpia myuros var. hirsuta F. W. Peirson 1922-5-30 4333 Los Angeles west spur of Mt. Lowe 1371 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
  RSA87328  Melica stricta var. albicaulis F. W. Peirson 1923-5-25 3524 Los Angeles Along stream on south side of canyon of Rock Creek, north slope of San Gabriel Mountains. 1296 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
  RSA88803  Carex fracta F. W. Peirson 1922-7-6 3178 Los Angeles Big Pines Camp 2088 Comment
  RSA94705  Packera ionophylla F. W. Peirson 1922-7-6 3195 Los Angeles Big Pines region west of Swartout Valley Comment
  SD70399  Lathyrus vestitus var. vestitus Frank W. Peirson 1920-5-16 2137 Los Angeles San Gabriel Mountains, Tujunga 472 Comment
  SD87549  Leptosiphon breviculus Frank W. Peirson 1929-7-1 8443 Los Angeles Mt. Pacifico, San Gabriel Mountains. 1981 Comment
  SD87860  Lemmonia californica F. W. Peirson 1919-5-10 396 Los Angeles Arraster, San Gabriel Mountains. 914 Comment
  UC1199875  Dodecatheon redolens Frank W. Peirson 1921-7-17 2516 Los Angeles Prairie Fork San Gabriel River San Gabriel Mountains, Prairie Fork San Gabriel River 2133 Comment
  UC483092  Salix exigua var. hindsiana Frank W. Peirson 1932-4-17 9859 Los Angeles about Lovejoy Dam; Mohave Desert, Lovejoy Buttes 762 Comment
  UC571020  Brickellia nevinii Frank W. Peirson 1924-12-5 5382 Los Angeles Head of Eaton Canyon, s face of San Gabriel Peak, San Gabriel Mountains San Gabriel Mountains, San Gabriel Peak, Eaton Canyon 1645 Comment
  UC672223  Solidago confinis Frank W. Peirson 1922-9-14 4744 Los Angeles San Antonio Canyon San Garbriel Mts., San Antonio Canyon (San Gabriel Mts.) 914 Comment
  UC908542  Eriastrum pluriflorum Frank W. Peirson 1927-5-7 7268 Los Angeles 12 mi s Muroc Comment
  UCD45239  Quercus berberidifolia F. W. Peirson 1919-5-11 404 Los Angeles Arraster Creek, San Gabriel Mountains. 853 Comment
  UCD46688  Quercus kelloggii F. W. Peirson 1921-7-3 1708 Los Angeles Rock Creek, San Gabriel Mountains. (Leaves July 3, 1921; Flowers May 26, 1923). 1996 Comment
  UCR129355  Heuchera elegans F. W. Peirson 1924-5-27 4639 Los Angeles San Gabriel Mtns., north slope, Strawberry Peak 1753 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
  UCR208206  Potentilla glandulosa subsp. nevadensis F. W. Peirson 1922-7-5 5249 Los Angeles San Gabriel Mountains, Big Pines, Swarthout Valley Comment
  CAS-BOT-BC153184  Diplacus johnstonii Frank W. Peirson 1920-6-10 196 Los Angeles Divide between Mt. Lowe and Mt. Markham 1645 Comment
  CAS-BOT-BC266498  Githopsis diffusa F. W. Peirson 1921-6-13 1208 Los Angeles Big Santa Anita Canyon trail, about 1.5 miles below Sturdevants, San Gabriel Mountains 1066 Comment
  CAS-BOT-BC267623  Eriogonum saxatile F. W. Peirson 1929-6-30 8434 Los Angeles On the trail to Mr. Pacifico where they were seen at various places up to the summit, Tie Canyon, Aliso Creek tributary, San Gabriel Mts. 1432 Comment
  CAS-BOT-BC344377  Madia exigua Frank W. Peirson 1923-5-21 3511 Los Angeles Fish Canyon, San Gabriel Mts. 914 Comment
  JEPS39870  Rumex fueginus F. W. Peirson 1921-6-19 2449 Los Angeles San Gabriel Mountains. Crystal Lake. North Fork San Gabriel Comment
  JEPS43131  Oxalis corniculata Frank W. Peirson 1920-5-6 212 b Los Angeles Fish Canyon San Gabriel Mtns 274 Comment
  JEPS43824  Clarkia epilobioides Frank W. Peirson 1919-5-18 433 Los Angeles hills e Monrovia Canyon; San Gabriel Mountains 457 Comment
  JEPS49582  Parnassia californica Frank W. Peirson 1922-8-25 2249 Los Angeles San Gabriel Mountains, South Fork Santa Ana Meadows South Fork Santa Ana Meadows; San Gabriel Mountains, South Fork Santa Ana Meadows 2438 Comment
  JEPS51490  Arenaria serpyllifolia var. serpyllifolia Frank W. Peirson 1924-5-27 4622 Los Angeles San Gabriel Mts., Colbys Ranch 975 Comment
  JEPS51647  Argemone rotundata Frank W. Peirson 1918-7-9 55 Los Angeles San Gabriel Mountains, San Antonio Canyon San Antonio Canyon; San Gabriel Mountains, San Antonio Canyon 1981 Comment
  JEPS53236  Athysanus pusillus Frank W. Peirson 1919-4-5 60 a Los Angeles Sierra Madre Trail to Mount Wilson; San Gabriel Mountains 762 Comment
  JEPS54675  Astragalus Frank W. Peirson 1922-7-5 3167 Los Angeles n Big Pines (Le Montaine); San Gabriel Mts, n of Big Pines, Le Montaine 2209 Comment
  JEPS61593  Chlorogalum pomeridianum var. pomeridianum Frank W. Peirson 1918-6-28 10 Los Angeles Lower Rubio Canyon 579 Comment
  JEPS64468  Platanthera sparsiflora Frank W. Peirson 1919-6-6 504 Los Angeles North Fork San Antonio Creek San Gabriel Mountains (wet bank) 2286 Comment
  JEPS7520  Madia gracilis Frank W. Peirson 1919-6-5 508 Los Angeles San Antonio Canyon, very close to boundary of San Bernardino County Angeles National Forest, San Gabriel Mts. Comment
  JEPS8875  Chaenactis xantiana Frank W. Peirson 1922-7-5 3163 Los Angeles n of Big Pines (along Le Montaine Creek, from about 7000 ft to near the summit of ridge immeditaely facing the Mohave Desert); San Gabriel Mountains, Le Montaine Creek 2209 Comment
  JEPS9551  Dicentra chrysantha Frank W. Peirson 1918-6-10 56 Los Angeles Mt. Markham; San Gabriel Mountains 1615 Comment
  LA38972  Mimulus guttatus Frank W. Peirson; 1918-5-19 197 Los Angeles San Gabriel Mountains, Trail from Dawn Station to Dawn Mine Comment
  PASA2004  Amsinckia tessellata Frank W. Peirson 1930-5-12 Los Angeles Along Blvd. about opposite Acton Comment
  PASA2055  Streptanthus heterophyllus Frank W. Peirson 1919-3-27 Los Angeles Hills west of Arroyo Seco 426 Comment
  PASA2285  Gnaphalium chilense Frank W. Peirson 1921-6-19 Los Angeles Crystal Lake, North Fork San Gabriel River 1676 Comment
  PASA2331  Madia exigua Frank W. Peirson 1923-5-21 Los Angeles Fish Canyon, San Gabriel Mts. 914 Comment
  PASA2695  Chenopodium fremontii Frank W. Peirson 1924-10-26 5258 Los Angeles Arroyo Seco below California St. bridge, Pasadena 198 Comment
  PASA350  Uropappus linearifolius Frank W. Peirson 1919-5-10 Los Angeles Arraster Creek, San Gabriel Mts. 914 Comment
  PASA596  Mirabilis laevis var. glutinosa Frank W. Peirson 1930-7-10 Los Angeles Big Rock Creek 1371 Comment
  PASA879  Penstemon heterophyllus Frank W. Peirson 1929-7-1 Los Angeles Aliso Creek at Tie Canyon, San Gabriel Mts. 1356 Comment
  POM12544  Thlaspi arvense F. W. Peirson 1919-2-23 s.n. Los Angeles Henninger Flats. N of Pasadena. 869 Comment
  POM18747  Chenopodium murale F. W. Peirson 1923-4-9 3481 Los Angeles San Clemente Island: Lemon Tank. Comment
  POM19150  Heliotropium curassavicum F. W. Peirson 1923-5-27 6891 Los Angeles Pallett Creek, San Gabriel Mts. Comment
  POM20546  Lupinus microcarpus var. microcarpus F. W. Peirson 1922-6-4 4223 Los Angeles Soledad Pass, sw Mojave Desert. 945 Comment
  POM223606  Stephanomeria virgata F. W. Peirson 1919-10-20 295 Los Angeles Brae Burn Road, Altadena. Comment
  POM47657  Carex multicaulis F. W. Peirson 1924-5-27 4626 Los Angeles north slope of Strawberry Peak, San Bernardino Mts. 1524 Comment
  POM99735  Antirrhinum coulterianum F. W. Peirson 188 Los Angeles Foothills east of Rubio C. San Gabriel Mts. Comment
  RSA0001998  Radicula sinuata var. truncata F. W. Peirson 1921-6-19 2450 Los Angeles Crystal Lake, San Gabriel Mts. 1677 Comment
  RSA0008570  Cryptantha traskiae F. W. Peirson 1923-4-11 3421 Los Angeles In canyon below farm buildings at Eagle Ranch, San Clemente Island Comment
  RSA0017034  Galium grande F. W. Peirson 1919-4-15 s.n. Los Angeles Sierra Madre Trail above the Madronas 915 Comment
  RSA0066510  Orobanche fasciculata Frank W. Peirson 1920-5-28 465 Los Angeles San Antonio Canyon, San Gabriel Mts. 1463 Comment
  RSA0078633  Orobanche californica subsp. feudgei F. W. Peirson 1921-7-3 2489 Los Angeles South of Swartout Valley, north side of San Gabriel Mts. 2255 Comment
  RSA0089955  Amsinckia retrorsa F. W. Peirson 1919-3-26 361 Los Angeles South side of New York Drive, east of Hill Ave., Altadena. Comment
  RSA0091277  Amsinckia spectabilis F. W. Peirson s.n. Los Angeles Ballona. Comment
  RSA0091448  Amsinckia tessellata var. tessellata Frank W. Peirson 1930-5-12 8792 Los Angeles Along boulevard nearly opposite Acton, about 3 miles north of Mint Canyon summit. Comment
  RSA0091457  Amsinckia tessellata F. W. Peirson 1932-4-17 9856 Los Angeles Below Lovejoy Dam, Lovejoy Buttes, southwestern Mojave Desert. 762 Comment
  RSA0100999  Malacothamnus F. W. Peirson 1918-6-15 2672 Los Angeles Upper Mint Canyon, northwestern part of San Gabriel Mts. Comment
  RSA0117330  Collinsia parryi F. W. Peirson 1918-6-1 193 Los Angeles Eaton Canyon, in the San Gabriel Mountains, northeast of Altadena 915 Comment
  RSA0117385  Collinsia parryi F. W. Peirson 1920-5-28 4491 Los Angeles San Antonio Canyon, San Gabriel Mountains. 1524 Comment
  RSA0121162  Eriastrum pluriflorum subsp. sherman-hoytiae F. W. Peirson 1933-5-13 s.n. Los Angeles About 10 miles south of Munroc, Western Mojave Desert. Comment
  RSA0123055  Eriastrum sapphirinum subsp. brevibracteatum F. W. Peirson 1922-7-7 4128 Los Angeles Sheep Creek. North base of San Gabriel Mountains. 1448 Comment
  RSA100277  Plectritis ciliosa subsp. insignis F. W. Peirson 1951-5-13 1204 Los Angeles Arroyo Seco, Pasadena Comment
  RSA64575  Eriogonum saxatile F. W. Peirson 1929-7-1 8434 Los Angeles San Gabriel Mountains: Tie Canyon, Aliso Creek tributary; trail to Mt. Pacifico. 1433 Comment
  RSA64755  Chenopodium multifidum F. W. Peirson 1920-10-1 2291 Los Angeles Gasoline station back of Chamber of Commerce Building, Pasadena 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
  RSA65446B  Spraguea F. W. Peirson 1905-7-14 37 Los Angeles South of summit of Mt. San Antonio, San Gabriel Mountains Comment
  RSA65516  Sagina decumbens subsp. occidentalis F. W. Peirson 1923-3-18 3353 Los Angeles field, San Gabriel Blvd at olf Eucalyptus road, San Gabriel Valley Comment
  RSA65819  Descurainia pinnata subsp. menziesii F. W. Peirson 1919-1-25 309 Los Angeles Foot of Arroyo Seco Canyon, Pasadena 381 Comment
  RSA65820  Descurainia pinnata subsp. menziesii F. W. Peirson 1922-7-6 5329 Los Angeles Big Pines Camp 2088 Comment
  RSA65826  Sisymbrium irio F. W. Peirson 1923-3-23 3355 Los Angeles Claremont. 365 Comment
  RSA65884  Monolepis nuttalliana F. W. Peirson 1932-4-17 9849 Los Angeles Near dam head, Lovejoy Buttes, Mohave Desert 762 Comment
  RSA65973  Eriogonum baileyi F. W. Peirson 1921-11-11 2718 Los Angeles E shore of lake near the road to Antelope Valley Comment
  RSA65996  Eriogonum deflexum var. baratum F. W. Peirson 1921-7-2 2471 Los Angeles San Gabriel Mountains: Pallett Creek 1082 Comment
  RSA66024  Eriogonum gracile var. gracile F. W. Peirson 1921-7-19 1743 Los Angeles San Gabriel Mts: junction of Coldwater Canyon and Cattle Canyon 793 Comment
  RSA66081  Hirschfeldia incana F. W. Peirson 1924-10-26 5259 Los Angeles Arroyo Seco, below California St. bridge, Pasadena. 198 Comment
  RSA66504  Arabis glabra F. W. Peirson 1919-4-9 390 Los Angeles Rubio Canyon. 549 Comment
  RSA66534  Camelina microcarpa F. W. Peirson 1922-7-7 3181 Los Angeles Ranger's Cabin, Swartout Valley. 1799 Comment
  RSA66754A  Caulanthus heterophyllus var. heterophyllus F. W. Peirson 1921-4-3 5333 Los Angeles Pacoima canyon, Western San Gabriel Mts. 488 Comment
  RSA66756  Caulanthus heterophyllus var. heterophyllus F. W. Peirson 1925-4-23 5786 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA66789  Thysanocarpus laciniatus F. W. Peirson 1919-3-30 664 Los Angeles Tujunga Canyon. 457 Comment
  RSA68340  Lepidium lasiocarpum F. W. Peirson 1923-4-8 3448 Los Angeles Wilsons Cove, San Clemente Island. Comment
  RSA68784  Delphinium parishii subsp. parishii F. W. Peirson 1919-5-11 419 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mountains. 915 Comment
  RSA69291  Chlorogalum pomeridianum var. pomeridianum Frank W. Peirson 1918-6-28 10 Los Angeles Rubio Canyon 610 Comment
  RSA69462  Mirabilis laevis var. retrorsa F. W. Peirson 1932-4-17 9846 Los Angeles Below the Lovejoy Dam, Lovejoy Buttes, Mojave Desert. 762 Comment
  RSA69489  Mirabilis laevis var. crassifolia F. W. Peirson 1923-4-8 3470 Los Angeles Wilson s Cove, San Clemente Island. Comment
  RSA69574  Mentzelia micrantha F. W. Peirson 1921-6-20 2465 Los Angeles N fork San Gabriel River 915 Comment
  RSA69705  Mentzelia veatchiana F. W. Peirson 1932-4-17 9862 Los Angeles 2 miles northeast of Lovejoy Buttes, Mohave Desert 762 Comment
  RSA69710  Mentzelia dispersa F. W. Peirson 1921-6-14 2466 Los Angeles Trail F of San Gabriel RiverSan Gabriel Mts. 976 Comment
  RSA70009  Amaranthus retroflexus F. W. Peirson 1951-1 1842 Los Angeles Altadena. Comment
  RSA70017  Suaeda calceoliformis F. W. Peirson 1918-08 1828 Los Angeles Long Beach Comment
  RSA70173  Allium fimbriatum var. fimbriatum F. W. Peirson 1926-5-6 6733 Los Angeles on open headland, about 1 mi. from Rock Creek on road to Los Angeles County Playgrounds. 1310 Comment
  RSA70196  Allium fimbriatum var. fimbriatum F. W. Peirson 1926-4-26 6661 Los Angeles 5 miles west of Rock Creek, Mohave Desert. Comment
  RSA70385  Euphorbia peplus F. W. Peirson 1921-4-8 2400 Los Angeles Coolidge Rare plant gardens, Santa Anita Road, Pasadena, CA. Comment
  RSA70535  Chamaesyce melanadenia F. W. Peirson 1924-12-5 5380 Los Angeles Large colony on open bank above trail; Little Samnta Anita Canyon. Comment
  RSA71111  Calystegia soldanella F. W. Peirson 894 Los Angeles Ballona Comment
  RSA71795  Saltugilia splendens subsp. grantii F. W. Peirson 1921-6-19 4707 Los Angeles North Fork of San Gabriel River 1296 Comment
  RSA71837  Gilia leptantha subsp. transversa F. W. Peirson 1926-4-26 6659 Los Angeles 2 miles southeast of Little Rock. Comment
  RSA71842  Gilia latiflora subsp. latiflora F. W. Peirson 1917-5-13 1950 Los Angeles Near Little Rock, Mojave Desert. Comment
  RSA72012  Phlox diffusa F. W. Peirson 1922-7-6 3179 Los Angeles Blue Ridge, near Swartout Valley. 2287 Comment
  RSA72194  Oenothera californica subsp. californica F. W. Peirson 781 Los Angeles Los Angeles River, San Fernando Valley Comment
  RSA72204  Camissonia bistorta F. W. Peirson 1919-3-26 4516 Los Angeles Altadena, New York Avenue near Hill Avenue. Comment
  RSA72293  Gilia angelensis F. W. Peirson 1919-3-30 919 Los Angeles Tujunga Canyon. West end of San Gabriel Mts. 427 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
  RSA73027  Leptosiphon bicolor F. W. Peirson 1923-4-9 3428 Los Angeles San Clemente Island: Lemon Tank; north shore Comment
  RSA73036  Leptosiphon breviculus F. W. Peirson 1921-6-19 937 Los Angeles North Fork of San Gabriel River. 1646 Comment
  RSA73334  Clarkia epilobioides F. W. Peirson 1919-5-18 433 Los Angeles Hills east of Monrovia Canyon 457 Comment
  RSA74187  Phacelia cicutaria var. hispida F. W. Peirson 1921-6-19 161 Los Angeles North Fork of San Gabriel River. 1006 Comment
  RSA74794  Phacelia F. W. Peirson 1930-5-12 8788 Los Angeles on detritus from canyon wall, in lower part of Mint Canyon, NW of San Gabriel Mts Comment
  RSA7495  Phacelia distans F. W. Peirson 1922-4-10 4121 Los Angeles 3-4 miles S of Seal Harbor, San Clemente Island. Comment
  RSA75433  Camissonia ignota F. W. Peirson 1919-3-30 414 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains. 457 Comment
  RSA75530  Phacelia fremontii F. W. Peirson 1933-5-13 10663 Los Angeles About 10 miles south of Munroc, Western Mojave Desert. Comment
  RSA75796  Pholistoma auritum F. W. Peirson 1918-4-28 441 Los Angeles Turnbull Canyon near Whittier, Puente Hills. Comment
  RSA75883  Nemophila menziesii var. integrifolia F. W. Peirson 1921-6-13 2738 Los Angeles Ranger s cabin, west fork of San Gabriel River. 960 Comment
  RSA75931  Phacelia austromontana F. W. Peirson 1921-7-3 2486 Los Angeles on trail northeast of Rock Creek divide Comment
  RSA77062  Loeseliastrum matthewsii F. W. Peirson 1919-6-15 468 Los Angeles Rock Creek, San Gabriel Mts. 1280 Comment
  RSA77181  Modiola caroliniana F. W. Peirson 2052 Los Angeles Wilson s Lake, Altadena Comment
  RSA77747  Viola pedunculata F. W. Peirson 1923-4-9 3443 Los Angeles San Clemente Island: about 6 miles SE of Wilson's Cove. Comment
  RSA77785  Lythrum californicum F. W. Peirson 1920-9-5 291 Los Angeles Eaton Canyon, south base of San Gabriel Mountains. 457 Comment
  RSA80170  Collinsia heterophylla F. W. Peirson 1921-6-21 4492 Los Angeles west fork of San Gabriel River 762 Comment
  RSA80289  Cryptantha muricata var. jonesii F. W. Peirson 1929-7-1 8427 Los Angeles On roadside and in clearing about old mill; Aliso Creek at Tie Canyon. 1341 Comment
  RSA80399  Daucus pusillus F. W. Peirson 1920-5-3 2311 Los Angeles Little Tujunga Wash, shortly above the junction with main stream, San Fernando Valley. 335 Comment
  RSA80832  Pedicularis densiflora F. W. Peirson 1921-4-21 2363 Los Angeles Sycamore Flat Ridge, San Gabriel Mtns. 854 Comment
  RSA81490  Castilleja linariifolia F. W. Peirson 1921-7-2 2478 Los Angeles Pallett Creek, north base of San Gabriel Mountains. 1098 Comment
  RSA82392  Salvia carduacea F. W. Peirson 1921-5-18 1059 Los Angeles Along railroad track, 3 miles east of Saugus. Comment
  RSA82403  Salvia mellifera F. W. Peirson 1920-4-18 181 Los Angeles New York St., La Canada. 610 Comment
  RSA84231  Monardella australis F. W. Peirson 1929-7-1 8445 Los Angeles Mt. Pacifico: upper part of trail, San Gabriel Mountains. 1982 Comment
  RSA84363  Lithophragma affine F. W. Peirson 1921-5-12 4190 Los Angeles Big Santa Anita Canyon, S base of San Gabriel Mts 762 Comment
  RSA84910  Crassula connata F. W. Peirson 1920-4-26 2112 Los Angeles Santa Anita Wash, S base of San Gabriel Mts. 213 Comment
  RSA85047  Polypodium californicum F. W. Peirson 1919-11-30 2838 Los Angeles South base of San Gabriel Mnts., Middle Eaton Canyon. 610 Comment
  RSA85193  Sparganium erectum subsp. stoloniferum F. W. Peirson 1919-07 1534 Los Angeles Ballona Marsh. Comment
  RSA85550  Cheilanthes covillei F. W. Peirson 1921-10-22 4297 Los Angeles San Gabriel Mountains, trail from San Gabriel Peak to Mt. Wilson. 1524 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
  RSA88718  Carex alma F. W. Peirson 1918-5-21 1636 Los Angeles Canyon of Arroyo Seco, near Pasadena. Comment
  RSA90047  Lotus argophyllus var. argophyllus F. W. Peirson 95 Los Angeles summit of Mt. Wilson 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
  RSA90175  Astragalus lentiginosus var. variabilis F. W. Peirson 1922-7-7 3194 Los Angeles Ranger's Cabin, Swartout Valley. 1799 Comment
  RSA90213  Astragalus trichopodus var. phoxus F. W. Peirson 1920-3-28 2099 Los Angeles Low hill at foot of Tujunga Canyon, west end of San Gabriel Mtns. 457 Comment
  RSA90270  Polypogon viridis F. W. Peirson 1920-9-17 4328 Los Angeles San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA90271  Polypogon viridis F. W. Peirson 1922-7-5 5360 Los Angeles Swartout Valley 1 mile east of Big Pines, north slope of San Gabriel Mountains. Comment
  RSA90276  Lathyrus vestitus var. vestitus F. W. Peirson 1924-5-26 4627 Los Angeles trail to Switzer's Camp 915 Comment
  RSA90293  Lotus grandiflorus var. grandiflorus F. W. Peirson 1924-5-27 4635 Los Angeles Tujunga canyon 762 Comment
  RSA90383  Lotus strigosus F. W. Peirson 1919-3-27 351 Los Angeles Arroyo Seco, near Pasadena 396 Comment
  RSA90453  Lathyrus vestitus var. vestitus F. W. Peirson 1921-10-9 s.n. Los Angeles Tujunga Canyon Comment
  RSA90849  Carex senta F. W. Peirson 1921-5-20 2658 Los Angeles Little Rock Creek 1067 Comment
  RSA90956  Erigeron divergens F. W. Peirson 1921-7-16 2500 Los Angeles Prairie Fork of the San Gabriel River 1555 Comment
  RSA91128  Trifolium microcephalum F. W. Peirson 1923-5-21 3513 Los Angeles Fish Canyon, San Bernardino Mountains 686 Comment
  RSA91156  Lessingia glandulifera var. glandulifera F. W. Peirson 1919-8-30 1261 Los Angeles Desert between Mojave and Lancaster. Comment
  RSA91204  Lupinus formosus var. formosus F. W. Peirson 1907-7-7 3 Los Angeles pine Flats Comment
  RSA91228  Lupinus formosus var. formosus F. W. Peirson 1924-5-26 4638 Los Angeles Strawberry Peak, Strawberry Peak, San Gabriel Mts 1143 Comment
  RSA91271  Isocoma acradenia F. W. Peirson 1919-8-30 1255 Los Angeles Desert between Mojave and Lancaster. Comment
  RSA91317  Lupinus longifolius F. W. Peirson 1921-4-10 7723 Los Angeles San Dimas Canyon, south base of San Gabriel Mts 442 Comment
  RSA91383  Linum usitatissimum F. W. Peirson 2026 Los Angeles Los Angeles River, San Fernando Valley Comment
  RSA91467  Scirpus microcarpus F. W. Peirson 1924-5-27 4636 Los Angeles Colby's Ranch 975 Comment
  RSA91568  Trifolium gracilentum F. W. Peirson 1923-4-9 3437 Los Angeles Lemon Tank, Middle Ranch, San Clemente Island. Comment
  RSA91824  Nassella cernua F. W. Peirson 1923-4-12 3419 Los Angeles Wilson's Cove, San Clemente Island Comment
  RSA91968  Elymus elymoides subsp. elymoides F. W. Peirson 1920-9-15 5370 Los Angeles Along ridge west of summit of Mt. San Antonio, San Gabriel Mountains. 2896 Comment
  RSA92191  Amblyopappus pusillus Mabel Peirson 1922-4-7 1392 Los Angeles San Pedro. Comment
  RSA92230  Madia minima F. W. Peirson 1921-6-14 2457 Los Angeles San Gabriel Mountains. Pine Flats, headwaters of Tujunga Creek. 1676 Comment
  RSA92323  Poa secunda var. secunda F. W. Peirson 1918-6-10 5367 Los Angeles Summit of San Gabriel Peak 1860 Comment
  RSA92379  Psilocarphus tenellus F. W. Peirson 1918-5-5 1303 Los Angeles Brents on the Malibu, Santa Monica Mountains. Comment
  RSA92470  Coreopsis californica F. W. Peirson 1932-4-17 9850 Los Angeles Below Lovejoy Dam, Lovejoy Buttes, southwestern Mojave Desert. 762 Comment
  RSA92544  Salix exigua F. W. Peirson 1921-3-6 9611 Los Angeles San Gabriel Wash. 213 Comment
  RSA92608  Salix exigua F. W. Peirson 1919-3-30 355 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains 396 Comment
  RSA92657  Eriophyllum confertiflorum var. confertiflorum F. W. Peirson 1921-7-19 2711 Los Angeles San Gabriel Mountains. 1981 Comment
  RSA92700  Salix laevigata F. W. Peirson 1919-3-30 359 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains 427 Comment
  RSA92715  Salix lucida subsp. lasiandra Mabel Peirson 1925-3-1 9605 Los Angeles Arroyo Seco, west of Pasadena Comment
  RSA92861  Chaenactis santolinoides F. W. Peirson 1928-6-2 7932 Los Angeles S fork of Rock Creek: trail toward the summit. 1982 Comment
  RSA92910  Madia elegans subsp. densifolia F. W. Peirson 1920-9-17 2712 Los Angeles San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA92988  Lasthenia coronaria F. W. Peirson 1927-5-7 7673 Los Angeles Arroyo Seco, above Teddy's 396 Comment
  RSA92990  Lasthenia coronaria F. W. Peirson 1912-03 s.n. Los Angeles Rubio Wash, south base of San Gabriel Mountains Comment
  RSA93198  Baccharis salicifolia F. W. Peirson 1925-4-23 5802 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA93202  Baccharis salicifolia F. W. Peirson 1919-02 353 Los Angeles Rubio Canyon, S side of San Gabriel Mts. 549 Comment
  RSA93232  Ericameria cooperi F. W. Peirson 1919-5-10 411 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mountains. 838 Comment
  RSA93285  Pentachaeta aurea F. W. Peirson 1222 Los Angeles Altadena. Comment
  RSA93738  Aster lanceolatus F. W. Peirson 1908-5-22 2589 Los Angeles Bixby Ranch near Long Beach. Comment
  RSA93757  Artemisia spinescens F. W. Peirson 1927-5-7 7262 Los Angeles 3 miles east of Lancaster. Comment
  RSA93785  Symphyotrichum greatae F. W. Peirson 1924-8-23 5053 Los Angeles Just above the mouth of the West Fork of the San Gabriel River 427 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
  RSA94398  Chaenactis xantiana F. W. Peirson 1922-7-5 3163 Los Angeles Summit of Le Montaine, north of Big Pines, north side of San Gabriel Mountains 2209 Comment
  RSA94428  Chaenactis artemisiifolia F. W. Peirson s.n. Los Angeles Nichols Canyon. Comment
  RSA94530  Artemisia californica F. W. Peirson 1918-10-16 245 Los Angeles Pacoima Canyon, west end of San Gabriel Mts. 534 Comment
  RSA94618  Venegasia carpesioides F. W. Peirson 1921-4-10 1365 Los Angeles South base of San Gabriel Mtns. San Dimas Canyon. 426 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
  RSA94685  Senecio lyonii F. W. Peirson 1923-4-12 3478 Los Angeles Wilson's Cove, San Clemente Island. Comment
  RSA94809  Acourtia microcephala F. W. Peirson 1929-6-30 8419 Los Angeles San Gabriel Mtns. In open clearing on Aliso Creek. 1098 Comment
  RSA94825  Cnicus benedictus F. W. Peirson 1935-3-31 11457 Los Angeles Mendocino Street and Holliston Ave, Altadena Comment
  RSA95081  Microseris douglasii subsp. platycarpha F. W. Peirson 1908-4-18 1464 Los Angeles Point Fermin. Comment
  RSA95086  Microseris douglasii subsp. tenella F. W. Peirson 1918-5-5 1466 Los Angeles Road from Brents on the Malibu, Santa Monica Mountains Comment
  RSA95092  Calycoseris parryi F. W. Peirson 1921-5-20 2765 Los Angeles Little Rock Creek, San Gabriel Mtns. 976 Comment
  RSA95240  Uropappus lindleyi F. W. Peirson 1919-5-10 1467 Los Angeles Arraster Creek 915 Comment
  RSA95241  Microseris lindleyi F. W. Peirson 1923-4-12 3453 Los Angeles Wilson's Cove, San Clemente Island. Comment
  RSA95251  Taraxacum officinale F. W. Peirson 1924-5-27 4679 Los Angeles Colby's Ranch 975 Comment
  RSA95294  Rhamnus ilicifolia F. W. Peirson 1918-6-18 287 Los Angeles Devils Punch Bowl, Rock Creek, north base of San Gabriel Mts. at 4000 ft. 1220 Comment
  RSA95326  Malacothamnus fasciculatus F. W. Peirson 1918-6-19 109 Los Angeles San Antonio Canyon Wash, south base of San Gabriel Mts. Comment
  RSA95348  Ceanothus oliganthus var. oliganthus F. W. Peirson 1918-6-30 113 Los Angeles Eaton Canyon, south face of San Gabriel Mts. Fruiting branch from 4400 feet on Mt. Wilson Trail. 1341 Comment
  RSA95361  Ceanothus megacarpus F. W. Peirson 1921-2-26 2359 Los Angeles Topanga Canyon Road, west end of San Gabriel Mts. Near summit of ridge, north slope 457 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
  RSA97341  Lomatium mohavense subsp. mohavense F. W. Peirson 1926-4-26 6655 Los Angeles about 1 mile east of Palmdale Comment
  RSA97355  Sanicula arguta F. W. Peirson 1923-5-24 3489 Los Angeles Woods along west bank of Arroyo Seco, Pasadena. 335 Comment
  RSA97376  Sanicula bipinnatifida F. W. Peirson 1918-4-28 812 Los Angeles Turnbull Canyon near Whittier, Puente Hills. 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
  RSA97432  Lomatium mohavense subsp. mohavense F. W. Peirson 1926-4-26 6655 -a Los Angeles about 1 mile east of Palmdale Comment
  RSA97463  Perideridia parishii subsp. latifolia F. W. Peirson 817 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA99372  Lonicera hispidula var. vacillans F. W. Peirson 1951-8-7 4502 Los Angeles Sturdevant's Camp, Big Santa Anita Canyon. 1067 Comment
  SD120819  Leptosiphon liniflorus Frank W. Peirson 1919-6-7 456 Los Angeles Cow Canyon Divide. 1372 Comment
  UC566787  Sanicula arguta Frank W. Peirson 1923-5-14 3489 Los Angeles Arroyo Seco 335 Comment
  UCSB24350  Potamogeton amplifolius Peirson, Frank 1921-6-19 Los Angeles Crystal Lake, San Gabriel Mountains 1676 Comment
  RSA70231  Allium bisceptrum F. W. Peirson 1914-8-22 1653 Madera Near Agnew s Pass, Sierra Nevada. Comment
  RSA77247  Hesperochiron pumilus F. W. Peirson 1914-08 983 Madera Devil s Post Pile, Sierra Nevada 2332 Comment
  RSA80092  Mimulus tilingii F. W. Peirson 1914-8-22 1134 Madera Near Agnew's Pass, Sierra Nevada. 3018 Comment
  RSA92105  Cyperus squarrosus F. W. Peirson 1914-8-15 1610 Madera Devils Post Pile. Sierra Nevada. 2332 Comment
  RSA92858  Chaenactis alpigena F. W. Peirson 1914-08 1400 Madera Devil's Post Pile, Sierra Nevada 2332 Comment
  RSA94897  Arnica amplexicaulis F. W. Peirson 1934-7-18 11260 Madera At the foot of Rainbow Falls. Middle Fork of San Joaquin River. 2165 Comment
  SEINET7564647 Image available Carex lenticularis var. lipocarpa Frank W. Peirson 1934-7-18 11266 Madera Middle Fork San Joaquin River. 2316 Comment
  POM231939  Lonicera involucrata var. ledebourii F. W. Peirson 1936-7-15 11833 Marin Point Reyes Peninsula. Comment
  RSA74863  Phacelia californica Mabel Peirson 1912-07 969 Marin Mt. Tamalpais Comment
  RSA77581  Myosotis latifolia F. W. Peirson 1926-3-28 6538 Marin Elk Valley. Comment
  RSA87011  Quercus durata F. W. Peirson 1925-10-3 6452 Marin Not far below the summit of Mt. Tamalpais. Comment
  SD87659  Hemizonia congesta subsp. congesta Frank W. Peirson 1925-10-3 6457 Marin Mount Tamalpais Comment
Read comments
Oct 31 2012
  RSA79470  Collinsia sparsiflora var. collina F. W. Peirson, Mabel B. Peirson 1926-4-1 6543 Marin 4 miles north of Ignacio. Comment
  RSA85293  Ranunculus muricatus Mabel Peirson 1926-3-28 6534 Marin Tennessee Cove. Comment
  RSA90325  Lotus humistratus F. W. Peirson 1912-07 2004 Marin Mt. Tamalpais. Comment
  RSA94494  Arnica discoidea Mabel Peirson 1912-07 1418 Marin Mt. Tamalpais Comment
  RSA98330  Perideridia kelloggii F. W. Peirson 1925-10-3 6456 Marin Mt. Tamalpais. Comment
  PASA1283  Stellaria jamesiana Frank W. Peirson 1927-8-6 Mariposa Porcupine flat Comment
  PASA2779  Lupinus breweri F. W. Peirson 1921-7-3 Y 73 Mariposa Little Yosemite Comment
  PASA2786  Tsuga mertensiana F. W. Peirson 1921-7-8 Y 121 Mariposa Ten Lakes Comment
  PASA2868  Lupinus covillei F. W. Peirson 1921-7-8 Y 91 Mariposa Ten Lakes Comment
  RSA72189  Epilobium ciliatum subsp. glandulosum F. W. Peirson 1927-8-6 7660 Mariposa Porcupine Flat, Sierra Nevada 2439 Comment
  RSA80339  Heracleum maximum F. W. Peirson 1927-8-6 7665 Mariposa Porcupine Flat 2439 Comment
  RSA80473  Mimulus laciniatus F. W. Peirson 1935-7-19 11534 Mariposa Glaciated region west of Lake Tenaya 2500 Comment
  PASA1835  Ligusticum grayi Frank W. Peirson 1930-8-15 Mariposa Lake Tenaya Region 2499 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
  PASA2764  Calyptridium umbellatum F. W. Peirson 1921-6-27 Y 17 Mariposa Yosemite Valley Comment
  PASA2785  Gilia aggregata F. W. Peirson 1921-7-6 Y 79 Mariposa Yosemite Creek Comment
  PASA2803  Lupinus albicaulis F. W. Peirson 1921-7-8 Y 103 Mariposa Ten Lakes, above Ghost Lake Comment
  PASA2814  Penstemon menziesii F. W. Peirson 1921-7-9 Y 114 Mariposa Ten Lakes trail Comment
  PASA2840  Epilobium alpinum F. W. Peirson 1921-7-1 Y 38 Mariposa above Lake Merced Comment
  PASA2841  Fragaria californica F. W. Peirson 1921-7-1 Y 39 Mariposa above Lake Merced Comment
  PASA2846  Pyrola minor F. W. Peirson 1921-7-1 Y 43 Mariposa damp island near Merced Lake Comment
  PASA2850  Corallorhiza multiflora F. W. Peirson 1921-7-1 Y 47 Mariposa near Merced Lake Comment
  PASA2851  Eriogonum umbellatum F. W. Peirson 1921-7-1 Y 48 Mariposa granite slopes below Lake Merced Comment
  PASA2862  Cryptogramma acrostichoides F. W. Peirson 1921-7-3 Y 59 Mariposa glaciated granite on Merced Lake Trail Comment
  PASA2875  Pellaea breweri F. W. Peirson 1921-7-7 Y 83 Mariposa south slope, Ten Lakes Comment
  POM175530  Monardella odoratissima subsp. pallida F. W. Peirson 1930-8-15 s.n. Mariposa Murphy Creek, Lake Tenaya Region 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
  RSA71905  Ipomopsis aggregata subsp. bridgesii F. W. Peirson 1927-8-7 7670 Mariposa trail from Porcupine Flat to Yosemite Point, Sierra Nevada. 2287 Comment
  RSA82060  Cordylanthus tenuis subsp. tenuis F. W. Peirson 1927-8-7 7667 Mariposa Trail from Porcupine Flat to Yosemite Point, Sierra Nevada. 2348 Comment
  RSA85032  Pellaea bridgesii F. W. Peirson 1927-8-5 7649 Mariposa Partial shade, Murphy Creek, Lake Tenaya Region 2485 Comment
  RSA86269  Aspidotis densa F. W. Peirson 1927-8-5 7648 Mariposa West end of Lake Tenaya 2485 Comment
  RSA88798  Carex raynoldsii F. W. Peirson 1930-8-16 9234 Mariposa In canyon below Lake Tenaya. 2470 Comment
  RSA92663  Eriophyllum lanatum var. integrifolium F. W. Peirson 1927-8-5 7642 Mariposa North of Lake Tenaya, Sierra Nevada 2485 Comment
  RSA93833  Artemisia arctica subsp. arctica F. W. Peirson 1927-8-6 7662 Mariposa Porcupine Flat, Sierra Nevada 2439 Comment
  RSA95228  Stephanomeria lactucina F. W. Peirson 1927-8-7 7668 Mariposa Trail from Porcupine Flat to Yosemite Point, Sierra Nevada. 2317 Comment
  RSA97345  Ligusticum grayi F. W. Peirson 1927-8-5 7643 Mariposa Murphy Creek, near Lake Tenaya, Sierra Nevada 2485 Comment
  CAS-BOT-BC284453  Centaurea melitensis Frank W. Peirson 1923-7-6 435 Mendocino Indian Creek, southern Mendocino county Comment
  RSA100283  Campanula californica F. W. Peirson 1923-7-7 3866 Mendocino 1 mile north of Navarro River Comment
  RSA100284  Campanula californica F. W. Peirson 1925-8-10 6372 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA171940  Aira caryophyllea F. W. Peirson 1925-8-10 6368 Mendocino Jug Handle Creek. Comment
  RSA65602  Stellaria crispa F. W. Peirson 1925-8-10 6391 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA65727  Claytonia sibirica F. W. Peirson 1925-8-10 6403 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA68748  Armeria maritima subsp. californica F. W. Peirson 1925-8-10 6386 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA70274  Juncus patens F. W. Peirson 1925-8-10 6392 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA70899  Arctostaphylos manzanita subsp. manzanita F. W. Peirson 1928-7-4 7958 Mendocino 7 miles north of Ukiah. Comment
  RSA71916  Gilia capitata subsp. pacifica F. W. Peirson 1923-7-8 3811 Mendocino Fort Bragg Comment
  RSA86705  Briza minor F. W. Peirson 1923-6-7 3651 Mendocino Navarro River, 10 miles below Wendling Comment
  RSA86710  Lolium temulentum F. W. Peirson 1923-6-6 3648 Mendocino Indian Creek, southern Mendocino County Comment
  RSA86788  Lolium perenne subsp. multiflorum F. W. Peirson 1923-7-6 3647 Mendocino Indian Creek, southern Mendocino Co. Comment
  RSA87346  Galium aparine F. W. Peirson 1932-7-6 10247 Mendocino Navarro River. Dimmick Memorial Park. Comment
  UC501564  Dactylis glomerata Frank W. Peirson 1932-7-6 10253 Mendocino Jug-Handle Creek; above inlet Comment
  UC501615  Triteleia laxa Frank W. Peirson 1923-7-7 3679 Mendocino 5 mi nw Boonville Comment
  UC501630  Anaphalis margaritacea Frank W. Peirson 1925-8-9 6356 Mendocino 8 mi e, on Ukiah Road Mendocino Ciyt Comment
  UCR51821  Triodanis biflora F. W. Peirson 1923-7-7 3870 Mendocino Navarro River, 10 miles below Wendling [=Navarro] Comment
  CAS-BOT-BC342575  Madia F. W. Peirson 1941-7-23 13083 Mendocino Van Damme State Park Comment
  CAS-BOT-BC345023  Madia sativa Frank W. Peirson 1925-8-10 6412 Mendocino Albion, near sea level 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
  HSC4250  Spergularia rubra F. W. Peirson 1925-8-10 6409 Mendocino Grade down to stream, Albion Comment
  PASA1345  Arnica discoidea Frank W. Peirson 1925-8-9 Mendocino Near summit of Coast Range on road from Ukiah to Mendocino City Comment
  POM20533  Dicentra formosa subsp. formosa F. W. Peirson 1923-7-8 s.n. Mendocino Ten Mile Creek Comment
  POM87070  Claytonia sibirica F. W. Peirson 1925-8-10 6403 Mendocino Jug Handle Creek, Mendocino County Comment
  RSA0012675  Senecio jacobaea F. W. Peirson 1923-7-8 3927 Mendocino Fort Bragg. Comment
  RSA0098127  Spergularia rubra F. W. Peirson 1925-8-10 6409 Mendocino Albion. Comment
  RSA65700  Silene californica F. W. Peirson 1923-7-7 3721 Mendocino 1 mile below camp on Indian Creek and 9 miles above Boonville. Comment
  RSA65935  Polygonum bistortoides F. W. Peirson 1923-7-7 3704 Mendocino 1 mile north of Navarro River Comment
  RSA68662  Zigadenus fremontii Frank W. Peirson 1923-7-7 3676 Mendocino 2 miles east of Mendocino City. Comment
  RSA69290  Chlorogalum pomeridianum var. pomeridianum Frank W. Peirson 1932-7-6 10254 Mendocino Hales Grove Auto Camp. Comment
  RSA69744  Luzula parviflora F. W. Peirson 1941-7-23 13092 Mendocino Van Damme State Park. Near sea level. Comment
  RSA75817  Nemophila heterophylla F. W. Peirson, Mabel Peirson 1926-4-1 s.n. Mendocino 5 miles north of Cloverdale. Comment
  RSA79451  Scrophularia californica F. W. Peirson 1941-7-23 s.n. Mendocino Van Damme State Park. Near sea level. 0 Comment
  RSA80429  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum F. W. Peirson 1923-7-7 3847 Mendocino About 3 miles east of Boonville. Comment
  RSA80699  Circaea alpina subsp. pacifica F. W. Peirson 1923-7-8 3789 Mendocino 3 miles up Ten-Mile River Comment
  RSA81473  Castilleja wightii F. W. Peirson 1941-7-23 s.n. Mendocino Van Damme State Park Comment
  RSA82216  Verbena lasiostachys var. lasiostachys F. W. Peirson 1925-8-10 6418 Mendocino Navarro River, 5-6 miles from ocean. Comment
  RSA84295  Tiarella trifoliata var. unifoliata F. W. Peirson 1923-7-7 3738 Mendocino Just below Wendling. Comment
  RSA90194  Aira caryophyllea F. W. Peirson 1925-8-10 6368 Mendocino Jug Handle Creek 6 miles north of Mendocino City. Comment
  RSA90287  Lathyrus vestitus subsp. bolanderi F. W. Peirson 1923-7-9 3626 Mendocino Near top of grade north of Westport. Comment
  RSA90317  Lotus aboriginus F. W. Peirson 1923-7-7 4074 Mendocino 2 miles east of Mendocino City Comment
  RSA91903  Phalaris californica F. W. Peirson 1932-6-6 10257 Mendocino near Hale's Grove Auto Camp Comment
  RSA92078  Psilocarphus tenellus var. tenellus F. W. Peirson 1923-7-7 3895 Mendocino Boonville Comment
  RSA92363  Anaphalis margaritacea F. W. Peirson 1925-8-9 6356 Mendocino Coast Range 8 miles east of Mendocino City, on road to Ukiah. Comment
  RSA93164  Baccharis pilularis F. W. Peirson 1925-8-10 6407 Mendocino Sea bluffs 5 miles south of Mendocino City Comment
  RSA93841  Aster radulinus F. W. Peirson 1925-8-9 6352 Mendocino Near Summit of Coast Range on road from Ukiah to Mendocino City Comment
  RSA94878  Arnica discoidea F. W. Peirson 1923-7-7 3921 Mendocino 2 miles east of Mendocino City Comment
  RSA95049  Sonchus asper F. W. Peirson 1932-7-6 10249 Mendocino Navarro River. Dimmick Memorial Park. Comment
  RSA95098  Crepis capillaris F. W. Peirson 1925-8-10 6413 Mendocino Grade down to the stream at Albion Comment
  RSA95171  Hieracium albiflorum F. W. Peirson 1923-7-9 3938 Mendocino Summit of first grade north of Westport. Comment
  SD87532  Eurybia radulina Frank W. Peirson 1925-8-9 6352 Mendocino Summit Coast Range west of Ukiah Comment
  UC566859  Eryngium armatum Frank W. Peirson 1925-8-10 6361 Mendocino 0.6 mi. n. Mendocino City (Jug Handle Creek); Jug Handle Creek Comment
  UC566864  Lilaeopsis occidentalis Frank W. Peirson 1923-7-8 3942 Mendocino 0.5 mi. n. mendocino City (Jug Handle Creek); Jug Handle Creek Comment
  CAS-BOT-BC211419  Eriogonum sphaerocephalum var. halimioides Frank Warrington Peirson 1926-7-25 6859 Modoc Cedarville Road, west slope of Warner Mts. Comment
  RSA70206  Allium acuminatum F. W. Peirson 1926-6-25 6874 Modoc Summit of grade, Cedarville Pass, Warner Mountains. Comment
  RSA73142  Navarretia intertexta F. W. Peirson 1926-6-25 6868 Modoc Cedarville Pass, Warner Mountains Comment
  RSA85818  Potentilla biennis F. W. Peirson 1926-6-25 6881 Modoc Small side canyon 1 mile east of summit of Warner Mountains, on Cedarville Road Comment
  PASA431  Elatine americana Frank W. Peirson 1926-6-26 Modoc Road from Alturas to Canby Comment
  POM175555A  Nemophila pedunculata F. W. Peirson 1926-6-25 6896 Modoc Small side canyon 1 mile east of summit of Warner Mountains on Cedarville Road. Comment
  POM98603  Arnica cordifolia F. W. Peirson 1926-6-25 s.n. Modoc Small side canyon 1 mile east of summit of Warner Mountains on Cedarville Road. Comment
  RSA0117237  Collinsia parviflora F. W. Peirson 1926-6-25 6891 Modoc Small side canyon 1 mile east of summit of Warner Mountains on Cedarville Road. Comment
  RSA66348  Eriogonum nudum var. pubiflorum F. W. Peirson 1926-6-25 6862 Modoc West slope of Warner Mountains on Cedarville Road. Comment
  RSA66352  Eriogonum nudum var. pubiflorum F. W. Peirson 1926-6-25 6861 Modoc West slope of Warner Mountains on Cedarville Road. Comment
  RSA77851  Callitriche verna F. W. Peirson 1926-6-26 6907 Modoc Between Alturas and Canby. Comment
  RSA84866  Ranunculus cymbalaria var. saximontanus F. W. Peirson 1926-6-26 6906 Modoc Alturas to Canby Comment
  RSA90968  Erigeron pumilus var. intermedius F. W. Peirson 1926-6-25 6885 Modoc 1 mile east of summit, Cedarville Road, Warner Mountains Comment
  SBBG28930  Solanum triflorum F. W. Peirson 1926-6-25 6878 Modoc 0.2 mi E of summit, near Ranch, Cedarville Rd Comment
  SD87796  Sedum stenopetalum subsp. stenopetalum Frank W. Peirson 1926-6-25 6866 Modoc Cedarville road, Warner Mountains, west slope. Comment
  CAS-BOT-BC28148  Carex hoodii Frank W. Peirson 1935-8-4 11729 Mono Sonora Pass Region. 2621 Comment
  CAS-BOT-BC88034  Thelypodium crispum Frank W. Peirson 1933-7-29 10722 Mono Canyon floor of Crooked Creek, Owens River. 2042 Comment
  JEPS10417  Pedicularis crenulata Frank W. Peirson 1927-7-25 Mono Convict Creek at road crossing Convict Creek 2148 Comment
  JEPS31551  Eremothera boothii subsp. boothii Frank W. Peirson 1933-7-31 Mono Mono Craters 2286 Comment
  JEPS31872  Symphyotrichum frondosum Frank W. Peirson 1937-8-1 12168 Mono Hot Creek Region Long Valley 2103 Comment
  JEPS36841  Stephanomeria exigua subsp. exigua Frank W. Peirson 1937-8-1 12158 Mono Hot Creek Region Long Valley 2103 Comment
  JEPS40725  Dieteria canescens var. canescens F. W. Peirson 1934-7-16 11246 Mono Virginia Lake Resort 2987 Comment
  POM203731  Galium hypotrichium subsp. hypotrichium F. W. Peirson 1934-7-16 s.n. Mono Virginia Lakes Basin. 2988 Comment
  POM203880  Polemonium pulcherrimum F. W. Peirson 1934-7-11 11181 Mono Above Moat Lake [Virginia Lakes Basin, Sierra Nevada] Comment
  POM87034  Eriogonum elatum var. elatum F. W. Peirson 1925-6-25 6055 Mono Rock Creek, volcanic tablelands. 2073 Comment
  POM87159  Salvia dorrii subsp. dorrii F. W. Peirson 1925-6-26 s.n. Mono Northern part of Volcanic Tableland, north of Bishop. Comment
  RSA468518  Linanthus pungens subsp. pulchriflorus F. W. Peirson 1925-6-25 6073 Mono [Lower] Rock Creek, Sierra Nevada. 2073 Comment
  RSA65017  Silene menziesii subsp. dorrii F. W. Peirson 1927-7-27 7568 Mono North end of Silver Lake. 2256 Comment
  RSA65110  Eriogonum lobbii F. W. Peirson 1934-7-13 11206 Mono Above Red Lake, Virginia Lakes Basin, Sierra Nevada 3201 Comment
  RSA65215  Eriogonum heermannii var. humilius F. W. Peirson 1933-7-28 10715 Mono Sherwin Hill Summit 1951 Comment
  RSA65837  Descurainia incana subsp. incisa F. W. Peirson 1925-6-27 6121 Mono West end of Gem Lake. Sierra Nevada. 2774 Comment
  RSA65848  Eriogonum microtheca var. laxiflorum F. W. Peirson 1930-8-12 9195 Mono North shore of Mono Lake at foot of black pumice hill. 1966 Comment
  RSA66256  Arabis lemmonii F. W. Peirson 1934-7-12 11195 Mono Pass at upper basin s head; Virginia Lakes Basin. Comment
  RSA69535  Maianthemum stellatum Frank W. Peirson 1925-6-25 6056 Mono [Lower] Rock Creek, Sierra Nevada 2073 Comment
  RSA72002  Phlox diffusa subsp. subcarinata F. W. Peirson 1934-7-14 11213 Mono Dry slopes above Virginia Lakes, Sierra Nevada 3018 Comment
  RSA78519  Carex fissuricola F. W. Peirson 1937-7-30 13606 Mono Lundy. 2470 Comment
  RSA78521  Carex exserta F. W. Peirson 1937-7-30 13608 Mono Lundy. 2470 Comment
  RSA79821  Keckiella breviflora subsp. glabrisepala F. W. Peirson 1925-6-30 6164 Mono West fork of Walker River below Cris Flat. Comment
  RSA79982  Castilleja nana F. W. Peirson 1914-1 1152 Mono Mono Pass, Sierra Nevada. Comment
  RSA79996  Amsinckia tessellata F. W. Peirson 1938-7-10 12454 Mono Below the old Devernois Ranch, west slope of White Mountains. 1463 Comment
  RSA80155  Plagiobothrys hispidus F. W. Peirson 1934-7-14 11217 Mono East of Blue Lake, Virginia Lakes Basin. East slope of Sierra Nevada. 3018 Comment
  RSA80857  Orthocarpus cuspidatus subsp. copelandii F. W. Peirson 1932-7-22 10373 Mono steep slope along Robinson creek below Barney Lake, Twin lake Basin, east slope of Sierra Nevada 2439 Comment
  RSA85745  Potentilla flabellifolia F. W. Peirson 1925-6-27 6123 Mono Rush Creek. 2896 Comment
  RSA86686  Leymus triticoides F. W. Peirson 1934-7-8 6700 Mono foot of Whiskey Creek, Owens River 2043 Comment
  RSA86839  Prunus andersonii F. W. Peirson 1925-6-25 6079 Mono Rock Creek, Sierra Nevada. 2073 Comment
  RSA86936  Betula occidentalis F. W. Peirson 1925-6-25 6054 Mono Rock Creek, Sierra Nevada 2073 Comment
Read comments
Feb 23 2013
  RSA87464  Lupinus meionanthus F. W. Peirson 1934-7-14 11216 Mono Dry slopes above Virginia Lakes. 2988 Comment
  RSA88688  Carex pellita F. W. Peirson 1925-6-25 6081 Mono Rock Creek 2073 Comment
  RSA88764  Carex douglasii F. W. Peirson 1925-6-26 6104 Mono Silver Lake. 2195 Comment
  RSA88780  Carex scopulorum var. bracteosa F. W. Peirson 1935-8-4 11731 Mono About 1.5 miles south of Sonora Pass. 2805 Comment
  RSA88781  Carex scopulorum var. bracteosa F. W. Peirson 1935-8-4 11727 Mono Mono County: About 2 miles southeast of Sonora Pass 2622 Comment
  SBBG98317  Brickellia microphylla F. W. Peirson 1934-7-30 Mono Sherwin Hill, W of rd 1950 Comment
  SD87619  Astragalus lentiginosus var. ineptus Frank W. Peirson 1934-7-10 11169 Mono Virginia Lakes Basin, along trail above Blue Lake. 3080 Comment
  SD87737  Brickellia oblongifolia var. linifolia Frank W. Peirson 1925-6-30 6166 Mono West Fork Walker River below Cris Flats. Comment
  SD87858  Nemophila spatulata Frank W. Peirson 1925-6-28 6137 Mono Reverse Creek 2286 Comment
  UC501425  Monardella odoratissima subsp. glauca Frank W. Peirson 1932-7-22 10361 Mono Twin Lake Basin, from Bridgeport, along Robinson Creek on the steep slope below Barney Lake. 2438 Comment
  UC501581  Astragalus canadensis var. brevidens Frank W. Peirson 1932-7-22 10360 Mono from Bridgeport (Twin Lake Basin, at the lower end of the upper lake); Twin Lake Basin, from Bridgeport 2133 Comment
  UC501598  Draba lemmonii var. lemmonii Frank W. Peirson 1930-8-5 9090 Mono Mono Pass Mono Pass (Inyo-Fresno Counties Line) 3657 Comment
Read comments
Jan 13 2019
  UC511736  Eriastrum wilcoxii Frank W. Peirson 1933-7-28 10717 Mono summit Sherwin Hill 1950 Comment
  UC511807  Brickellia microphylla var. microphylla Frank W. Peirson 1933-8-23 10852 Mono summit Sherwin Hill Sherwin Hill 1950 Comment
  UC511899  Monardella linoides subsp. sierrae Frank W. Peirson 1933-7-29 10727 Mono Crooked Creek Canyon Owens River 2042 Comment
  UC599240  Sporobolus airoides Frank W. Peirson 1938-7-10 12464 Mono 18 mi. s. Benton Station 1371 Comment
  CAS-BOT-BC241640  Eriogonum baileyi var. baileyi Frank W. Peirson 1933-7-29 10747 Mono Along road from the Boulevard to the river, Owens River 2042 Comment
  JEPS1427  Nama densa Frank W. Peirson 1938-7-8 12421 Mono Sherwin Hill , Sherwin Hill (Sherwin Grade) 1889 Comment
  JEPS3070  Antirrhinum kingii Frank W. Peirson 1938-7-8 12425 Mono Sherwin Grade 1889 Comment
  JEPS58004  Oxytheca dendroidea subsp. dendroidea Frank W. Peirson 1934-7-8 Mono slopes above Whisky Creek; Owens River 2042 Comment
  JEPS69065  Eriastrum wilcoxii Frank W. Peirson 1933-7-31 10755 Mono n slope Mono Craters 2286 Comment
  JEPS9114  Chamaesaracha nana Frank W. Peirson 1933-7-30 10752 Mono along Boulevard near McGee Creek crossing (between Tom's Place and Convict Creek) 2072 Comment
  LA95098  Mimulus nanus var. mephiticus Frank W. Peirson; 1925-7-26 6098 Mono S of Mono Valley 2438 Comment
  PASA165  Pedicularis crenulata Frank W. Peirson Mono Convict Creek at Road crossing 2133 Comment
  PASA1816  Chrysothamnus viscidiflorus Frank W. Peirson 1930-8-11 Mono Main Road near Mammoth Road 2209 Comment
  PASA231  Trifolium cyathiferum Frank W. Peirson 1932-7-22 Mono Twin Lake Basin, meadows along Robinson Creek 2285 Comment
  PASA934  Lactuca pulchella Frank W. Peirson 1927-7-28 Mono Mono Lake at Mono Inn 1958 Comment
  POM203732  Juncus orthophyllus F. W. Peirson 1934-7-16 11252 Mono Virginia Lakes Basin. Along trail at east end of Blue Lake. 3018 Comment
  POM203737  Antennaria rosea F. W. Peirson 1934-7-16 11253 Mono Virginia Lakes Basin 3018 Comment
  POM203907  Wyethia mollis 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
  RSA0117266  Collinsia parviflora F. W. Peirson 1925-6-28 6136 Mono Reverse Creek, Sierra Nevada 2256 Comment
  RSA0121630  Mentzelia monoensis F. W. Peirson 1927-7-26 7558 Mono Volcanic mountains between Deadman Creek and June Lake. 2409 Comment
  RSA0125866  Anelsonia eurycarpa F. W. Peirson 1934-7-15 11201 Mono Virginia Lakes Basin. 3232 Comment
  RSA0129292  Arabis holboellii var. pinetorum F. W. Peirson 1938-7-9 12447 Mono Along east base of Mono Craters. 2134 Comment
  RSA378073  Triteleia ixioides subsp. scabra F. W. Peirson 1935-7-18 s.n. Mono Near site of old saw mill; Slate Creek. 3018 Comment
  RSA446908  Mentzelia torreyi F. W. Peirson 1933-8-1 s.n. Mono Low lake terrace near the black pumice hill, north shore Mono Lake 1966 Comment
  RSA65404  Cistanthe rosea F. W. Peirson 1938-7-8 12433 Mono Near the Hot creek Gorge, Ownes Valley 2195 Comment
  RSA65774  Cleome sparsifolia F. W. Peirson 1933-7-31 10761 Mono North shore Mono Lake. Comment
  RSA65795  Lepidium virginicum var. pubescens F. W. Peirson 1938-7-8 12428 Mono Ca 1 mile from Owens River, Crooked Creek. 2073 Comment
  RSA65910  Eriogonum nidularium F. W. Peirson 1925-6-25 6039 Mono Grade up Volcanic Tableland (Sherwin Grade) Comment
  RSA66012  Eriogonum nudum var. westonii F. W. Peirson 1938-7-8 12426 Mono Sherwin Grade. 1890 Comment
  RSA66214  Arabis holboellii var. retrofracta F. W. Peirson 1938-7-9 12447 -a Mono Along east base of Mono Craters. 2134 Comment
  RSA66768  Arabis divaricarpa F. W. Peirson 1937-7-31 12152 Mono Mill Creek (Lundy Canyon). 2470 Comment
  RSA66823  Thelypodium crispum F. W. Peirson 1933-7-29 10722 Mono Crooked Creek Canyon, Owens Valley 2043 Comment
  RSA67163  Galium trifidum var. pusillum F. W. Peirson 1927-7-29 7600 Mono Saddlebag Creek. Sierra Nevada. 3201 Comment
  RSA68799  Delphinium glaucum F. W. Peirson 1934-7-16 11237 Mono W end of Blue L Lake, Virginia Lakes Basin 3018 Comment
  RSA69380  Thalictrum fendleri F. W. Peirson 1934-7-16 11242 Mono W end of Blue L Lake, Virginia Lakes Basin 3018 Comment
  RSA69398  Thalictrum sparsiflorum F. W. Peirson 1925-6-25 6044 Mono Rock Creek 1829 Comment
  RSA69428  Frasera speciosa F. W. Peirson 1934-7-11 11178 Mono Along stream from Moat Lake, Virginia Lake Basin. 3079 Comment
  RSA70078  Platanthera leucostachys Frank W. Peirson 1934-7-16 11234 Mono Just above the gorge above Blue Lake, Virginia Lakes Basin. 3034 Comment
  RSA70590  Sisyrinchium idahoense var. idahoense Frank W. Peirson 1937-7-30 12141 Mono Mill Creek (Lundy Canyon). 2470 Comment
  RSA72168  Epilobium ciliatum subsp. glandulosum F. W. Peirson 1927-7-28 7579 Mono Near Mono Lake. At Mono Inn. 1959 Comment
  RSA72639  Wyethia mollis F. W. Peirson 1925-6-26 6089 Mono Northern part of Volcanic Tableland. Comment
  RSA74789  Phacelia ramosissima var. subglabra F. W. Peirson 1933-7-29 10728 Mono Floor of Crooked Creek Canyon; Owens River. 2043 Comment
  RSA75364  Camissonia boothii subsp. desertorum F. W. Peirson 1914-8-26 794 Mono Volcanic Tableland, Owens Valley Comment
  RSA766440  Eriogonum elatum F. W. Peirson 1927-7-27 7571 Mono Silver Lake. 200 feet above lake. 2256 Comment
  RSA766441  Eriogonum elatum F. W. Peirson 1932-7-22 10362 Mono Steep slope along Robinson Creek below Barney Lake (Twin Lake Basin) 2378 Comment
  RSA79911  Leucophysalis nana F. W. Peirson 1933-7-30 10752 Mono Between Tom's Place and Convict Creek, near the crossing of McGee Creek. 2073 Comment
  RSA80722  Mimulus pilosus F. W. Peirson 1938-7-9 12444 Mono Along east base of Mono Craters. 2134 Comment
  RSA85541  Cheilanthes gracillima F. W. Peirson 1937-7-21 12153 Mono Mill Creek, Lundy Canyon 2591 Comment
  RSA86681  Cercocarpus ledifolius F. W. Peirson 1930-8-13 9210 Mono Levining Grade E slope of Sierra Nevada. 2591 Comment
  RSA90255  Astragalus lentiginosus var. ineptus F. W. Peirson 1934-7-10 11169 Mono Trail west of Blue Lake, Virginia Lakes Basin. 3079 Comment
  RSA90665  Chrysothamnus nauseosus subsp. consimilis F. W. Peirson 1914-8-25 s.n. Mono Northern part of Volcanic Tableland north of Bishop Comment
  RSA90713  Astragalus lemmonii F. W. Peirson 1938-7-8 12614 Mono Hot Creek region 2134 Comment
  RSA90771  Astragalus whitneyi F. W. Peirson 1933-7-29 10746 Mono Whisky Creek, Owens River. Comment
  RSA91038  Erigeron coulteri F. W. Peirson 1937-7-30 12138 Mono Mill Creek (Lundy Canyon) 2470 Comment
  RSA92135  Eleocharis parishii F. W. Peirson 1930-8-12 9182 Mono Mono Lake. 1966 Comment
  RSA92837  Madia elegans subsp. wheeleri F. W. Peirson 1933-7-29 10720 Mono Crooked Creek Canyon, Owens Valley 2043 Comment
  RSA93439  Brickellia microphylla F. W. Peirson 1933-8-23 10852 Mono Summit of Sherwin Hill, north of Bishop 1951 Comment
  RSA93851  Chrysothamnus parryi subsp. monocephalus F. W. Peirson 1934-7-13 11208 Mono Shores of Virginia Lake, Virginia Lakes Basin 2988 Comment
  RSA93959  Pyrrocoma uniflora var. uniflora F. W. Peirson 1914-8-25 1241 Mono Crooked Creek, Northern part of Volcanic Tableland Comment
  RSA94195  Artemisia ludoviciana subsp. incompta F. W. Peirson 1927-7-25 7548 Mono Convict Creek near Convict Lake, east base of Sierra Nevada 2149 Comment
  RSA94414  Artemisia ludoviciana subsp. ludoviciana F. W. Peirson 1914-8-25 1457 Mono Northern part of volcanic tableland. Crooked Creek. 2043 Comment
  RSA94953  Tetradymia canescens F. W. Peirson 1934-7-14 11219 Mono East of Blue Lake, Virginia Lakes Basin. East side of Sierra Nevada. 3018 Comment
  RSA95104  Crepis acuminata F. W. Peirson 1932-7-22 10364 Mono Steep slope below Barney Lake and along Robinson Creek, Twin Lake Basin. 2439 Comment
  RSA95134  Crepis intermedia F. W. Peirson 1925-6-25 6052 Mono Rock Creek, east base of Sierra Nevada Comment
  RSA95214  Stephanomeria exigua subsp. coronaria F. W. Peirson 1937-8-1 12158 Mono Long Valley, Hot Creek region. 2104 Comment
  RSA95222  Stephanomeria pauciflora F. W. Peirson 1925-6-25 6034 Mono Sherwin Grade, N of Bishop. 1829 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
  UC511730  Astragalus lentiginosus var. albifolius Frank W. Peirson 1933-7-29 10743 Mono in narrow strip of meadow along Hilton Creek (Owens River); , along Hilton Creek 2042 Comment
  UC511767  Chamaesaracha nana Frank W. Peirson 1933-7-30 10752 Mono along Boulevard near McGee Creek crossing (between Tom's Place and Convict Creek) 2072 Comment
  UC511905  Astragalus whitneyi Frank W. Peirson 1933-7-29 10746 Mono slopes about Whisky Creek , slopes about Whisky Creek (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
  UC599222  Abronia turbinata Frank W. Peirson 1938-7-9 12443 Mono At east base of Mono Craters Mono Craters Comment
  UC599228  Cryptantha confertiflora Frank W. Peirson 1938-7-8 12427 Mono near Sherwin Grade summit; Sherwin Grade 1889 Comment
  CAS-BOT-BC64554  Armeria maritima subsp. californica Frank W. Peirson 1923-6-27 3804 Monterey Monterey. Comment
  RSA69456  Juncus balticus subsp. ater F. W. Peirson 1923-6-27 3671 Monterey Monterey. Comment
  RSA75936  Phacelia malvifolia F. W. Peirson 1912-1 978 Monterey Probably near Monterey. Comment
  RSA75943  Phacelia malvifolia F. W. Peirson 1923-6-27 3819 Monterey 17-mile Drive. At south end near Carmel. Comment
  RSA85546  Aspidotis californica F. W. Peirson 1937-7-19 12090 Monterey along trail up the Big Sur River 305 Comment
  CAS-BOT-BC271582  Calycadenia truncata subsp. truncata Frank W. Peirson 1936-7-13 11831 Monterey Nacimiento Creek branch of San Antonio River 518 Comment
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Nov 13 2017
  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
  POM93748  Artemisia pycnocephala F. W. Peirson 1903-07 1453 Monterey Monterey. Comment
  RSA0028466  Geranium dissectum F. W. Peirson 1923-6-27 3757 Monterey Lower part of Redwood Creek, near Notry s Landing, on coast south of Monterey. Comment
  RSA0063007  Heuchera pilosissima F. W. Peirson 1923-6-27 s.n. Monterey 2 miles S of Redwood Creek. Comment
  RSA0070583  Cirsium brevistylum F. W. Peirson 1923-6-27 9598 Monterey Redwood Creek at Notrey's [Notley's] Landing. Comment
  RSA289934  Monardella villosa subsp. obispoensis F. W. Peirson 1936-7-13 11829 Monterey Nacimiento Creek, a branch of San Antonio River 518 Comment
  RSA85194  Sparganium erectum subsp. stoloniferum F. W. Peirson 1923-6-27 5359 Monterey Creek just north of Monterey. Comment
  RSA87477  Lupinus albifrons var. douglasii F. W. Peirson 1923-6-27 3612 Monterey Along coast road southward from Monterey, at Notrys Landing. Comment
  RSA91975  Hierochloe occidentalis F. W. Peirson 1923-6-27 s.n. Monterey Seventeen Mile Drive Comment
  RSA93118  Corethrogyne filaginifolia var. californica F. W. Peirson 1923-6-27 3885 Monterey Sand dunes at Monterey Comment
  RSA93124  Erigeron glaucus F. W. Peirson 1912-6-27 1289 Monterey Near the coast at Monterey Comment
  RSA93388B  Symphoricarpos mollis F. W. Peirson 1923-6-27 3864 Monterey Redwood Creek at Notrey's [Notley's] Landing. Comment
  CAS-BOT-BC295197  Erigeron inornatus Frank W. Peirson 1931-8-10 9556 Nevada Donner Lake 1828 Comment
  RSA100334  Heterocodon rariflorum F. W. Peirson 1931-8-10 9560 Nevada West end of Donner Lake. 1829 Comment
  RSA69930  Apocynum androsaemifolium subsp. pumilum F. W. Peirson 1931-8-10 9571 Nevada On banks of Yuba River, Sierra Camp, 4 miles west of Donner Pass 2058 Comment
  RSA85704  Potentilla gracilis F. W. Peirson 1931-8-10 9575 Nevada Along the banks of the Yuba River, 4 miles W of summit of Donner Pass. 2058 Comment
  RSA90372  Lotus nevadensis F. W. Peirson 1931-8-10 9561 Nevada West of Donner Lake. 1829 Comment
  CAS-BOT-BC222603  Pholistoma auritum var. auritum F. W. Peirson 1923-3-25 4481 Orange Aliso Creek, at sea level Comment
  CAS-BOT-BC97982  Symphyotrichum hesperium Frank W. Peirson 1924-10-19 5241 Orange Wintersberg Comment
  JEPS32500  Styrax officinalis var. redivivus Frank W. Peirson 1923-5-5 3493 Orange n side Trabuco Canyon; Santa Ana Mts., n side of Trabuco Canyon 640 Comment
  PASA1142  Monardella hypoleuca Frank W. Peirson 1923-9-7 Orange Santiago Peak 1066 Comment
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Jan 7 2018
  PASA2306  Calycadenia tenella Frank W. Peirson 1922-5-18 Orange Santa Ana River 121 Comment
  PASA2518  Ceanothus tomentosus Frank W. Peirson 1922-5-19 Orange Small canyon heading eastward from the Santa Ana Canyon at 400 ft. Comment
  PASA433  Frankenia grandifolia var. campestris Frank W. Peirson 1924-8-29 Orange 4 miles south of Santa Ana Comment
  RSA68633  Calochortus splendens Frank W. Peirson 1924-5-31 4669 Orange 5 miles southeast of Laguna Beach. Comment
  RSA69967  Abronia villosa var. aurita F. W. Peirson 1924-8-29 5060 Orange Santa Ana Comment
  RSA70544  Euphorbia spathulata F. W. Peirson 1922-5-18 3060 Orange Santa Ana River. 122 Comment
  RSA77180  Malvella leprosa F. W. Peirson 1924-8-29 5068 Orange 4 miles S of Santa Ana Comment
  RSA80321  Lycium californicum F. W. Peirson 1924-2-10 4526 Orange Balboa Beach, mainland near bridge Comment
  RSA80823  Frankenia grandifolia var. campestris F. W. Peirson 1924-5-31 4659 Orange Laguna Canyon near Laguna Beach 91 Comment
  RSA82101  Mimulus clevelandii F. W. Peirson 1923-5-6 3509 Orange Trabuco Canyon to Santiago Peak 915 Comment
  RSA84969  Ribes speciosum F. W. Peirson 1924-2-10 4531 Orange Second canyon south of Corona Del Mar. Comment
  RSA86974  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1923-5-5 3508 Orange Trabuco Canyon, Santa Ana Mts. 549 Comment
  SD87597  Symphyotrichum lanceolatum subsp. hesperium F. W. Peirson 1924-10-19 5241 Orange Wintersberg Comment
  UCR136650  Solanum nigrum F. W. Peirson 1924-2-9 4523 Orange South Coast, between Wintersburg and the sea 9 Comment
  UCR64632  Cyperus niger F. W. Peirson 1924-10-19 5231 Orange Wintersberg. Comment
  PASA1561  Jaumea carnosa Frank W. Peirson 1924-8-29 Orange 3 miles from Balboa on road inland along creek Comment
  RSA64787  Chenopodium murale F. W. Peirson 1924-2-10 5271 Orange Corona Del Mar. Comment
  RSA65535  Mesembryanthemum nodiflorum F. W. Peirson 1920-6-25 2209 Orange 5 miles south of San Juan Capistrano. Comment
  RSA66319  Polygonum lapathifolium F. W. Peirson 1924-10-19 5233 Orange Wintersberg Comment
  RSA71116  Calystegia sepium subsp. limnophila F. W. Peirson 1926-9-26 7086 Orange Wintersberg. Near to sea level. Comment
  RSA80733  Nicotiana glauca F. W. Peirson 1923-3-18 5306 Orange Santa Ana River Canyon. 137 Comment
  RSA91008  Conyza canadensis F. W. Peirson 1924-10-19 5242 Orange Wintersberg. Comment
  RSA91276  Isocoma menziesii var. vernonioides F. W. Peirson 1919-11-8 1254 Orange South of Arch Beach, near Laguna Beach Comment
  RSA91683  Poa howellii F. W. Peirson 1923-5-6 3491 Orange Trail to Santiago Peak from Holy Jim Canyon. 991 Comment
  RSA92111  Cyperus odoratus F. W. Peirson 1924-10-19 2532 Orange Wintersberg Comment
  RSA92200  Jaumea carnosa F. W. Peirson 1924-8-29 5076 Orange 3 miles from Balboa Beach. Comment
  RSA92227  Calycadenia tenella F. W. Peirson 1922-5-18 1353 Orange Santa Ana River 122 Comment
  RSA92493  Helianthus nuttallii subsp. parishii F. W. Peirson 1924-10-19 5246 Orange Wintersberg. Comment
  RSA92623  Salix lasiolepis F. W. Peirson 1924-2-9 4521 Orange Between Wintersberg and the sea. Comment
  RSA93112  Erigeron philadelphicus F. W. Peirson 1924-2-9 4522 Orange Between Wintersberg and the sea. Comment
  RSA94100  Deinandra fasciculata F. W. Peirson 1924-8-29 5064 Orange Santa Ana Comment
  RSA95321  Malacothamnus fasciculatus F. W. Peirson 1924-5-31 4662 Orange Sea bluffs at Laguna Beach. Comment
  RSA95352  Ceanothus oliganthus F. W. Peirson 1923-5-6 3494 Orange Trail to Santiago Peak from Holy Jim Canyon. 991 Comment
  RSA97393  Osmorhiza brachypoda F. W. Peirson 1923-5-6 3502 Orange From Trabuco Canyon to Santiago Peak 1646 Comment
  RSA97709  Berula erecta F. W. Peirson 1924-8-29 5071 Orange roadside 4 miles south of Santa Ana. Comment
  RSA74832  Phacelia hydrophylloides F. W. Peirson 1926-6-23 6831 Plumas Trail to Lassen Peak, Lassen National Park. Comment
  UC483080  Salix melanopsis Frank W. Peirson 1932-7-19 10349 Plumas Feather R. near Chester; Feather R. 1463 Comment
  CAS-BOT-BC269955  Eriogonum spergulinum var. reddingianum F. W. Peirson 1926-6-21 6792 Plumas Lake Almanor, north shore Comment
  POM98578  Chamaesaracha nana F. W. Peirson 1926-6-21 6796 Plumas South shore Lake almanor, Comment
  RSA74857  Phacelia mutabilis F. W. Peirson 1926-6-22 6813 Plumas Trail from Drakesbad to Devil s Kitchen, Lassen National Park. 1738 Comment
  RSA79434  Collinsia parviflora F. W. Peirson 1926-6-21 6785 Plumas East slope of Sierra Nevada, Humboldt Road. Comment
  RSA82061  Cordylanthus tenuis subsp. viscidus F. W. Peirson 1926-6-22 6807 Plumas Drakesbad, in vicinity of Boiling Lake, Lassen National Park. Comment
  RSA82205  Trichostema oblongum F. W. Peirson 1932-7-19 10345 Plumas Feather River. Near Chester. 1463 Comment
  RSA92196  Hymenoxys lemmonii F. W. Peirson 1932-7-20 10356 Plumas North of Layalton, probably in Plumas Co. (in Sierra Valley) 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-BC101306  Corethrogyne filaginifolia Frank W. Peirson 1924-7-28 5017 Riverside Pine Flats Camp, San Jacinto Mts. 1798 Comment
  CAS-BOT-BC131424  Encelia frutescens Frank W. Peirson 1922-4-12 s.n. Riverside 30 miles south of Coachella Comment
  CAS-BOT-BC181570  Crossosoma bigelovii Frank W. Peirson 1922-4-9 s.n. Riverside Andreas Canyon - Colorado Desert 457 Comment
  CAS-BOT-BC191854  Chorizanthe corrugata Frank W. Peirson 1927-4-12 7175 Riverside Painted Canyon, near camp at forks Comment
  CAS-BOT-BC202569  Tetracoccus hallii Frank W. Peirson 1928-4-24 7894 Riverside Cottonwood Spring Comment
  CAS-BOT-BC207130  Argythamnia lanceolata F. W. Peirson 1921-3-23 2805 Riverside Deep Canyon Wash, 12 miles southeast of Palm Springs, Colorado Desert 152 Comment
  CAS-BOT-BC227046  Leptosiphon floribundus subsp. glaber Frank W. Peirson 1922-4-28 946 Riverside Leach Canon [Canyon], Elsinore Region Comment
  CAS-BOT-BC261783  Eriogonum wrightii var. nodosum Frank W. Peirson 1922-12-27 3333 Riverside Andreas, between Forks, East slope San Jacinto Comment
  CAS-BOT-BC263519  Eriogonum thomasii Frank W. Peirson 1927-4-12 7171 Riverside Painted Canyon Comment
  CAS-BOT-BC299541  Ericameria paniculata Frank W. Peirson 1922-12-26 3331 Riverside Cabazon old road, Colorado Desert Comment
  CAS-BOT-BC70037  Cheilanthes covillei Frank W. Peirson 1922-4-10 s.n. Riverside Murray Canyon, Palm Springs Region 457 Comment
  CAS-BOT-BC83348  Myosurus minimus Frank W. Peirson 1922-5-19 4171 Riverside Menifee Valley. Comment
  CAS-BOT-BC95419  Bowlesia incana F. W. Peirson 1922-4-30 2954 Riverside about 1.5 mi.es from Temecula River on Hemet Road, Lancaster Valley 518 Comment
  JEPS7671  Nemacladus rubescens Frank W. Peirson 1926-1-31 6486 Riverside about 2 mi from station on Mecca Road, Dos Palmas; Colorado Desert, Dos Palmas Comment
  PASA1119  Lotus tomentellus Frank W. Peirson 1927-4-12 Riverside Painted Canyon, Colorado Desert Comment
  PASA1248  Orcuttia californica Frank W. Peirson 1922-5-19 Riverside Manfee Valley 426 Comment
  PASA1890  Epilobium adenocaulon Frank W. Peirson 1924-7-28 Riverside Pine Flats Camp, San Jacinto Mts. 1798 Comment
  PASA2723  Astragalus douglasii var. parishii Frank W. Peirson 1922-5-20 3342 Riverside Hemet Valley, San Jacinto Mtns. 1371 Comment
  PASA628  Juncus bufonius Frank W. Peirson 1922-4-29 Riverside South side Lake Elsinore Comment
  POM128742  Eriogonum thomasii F. W. Peirson 1927-4-12 7171 Riverside Painted Canyon. Comment
  POM128749  Trichoptilium incisum F. W. Peirson 1927-4-12 s.n. Riverside Painted Canyon Comment
  POM14735  Stephanomeria pauciflora F. W. Peirson 1922-12-27 3335 Riverside Andreas Canyon, near Palm Springs. Comment
  POM48556  Eustoma exaltatum F. W. Peirson 1924-12-30 5419 Riverside Thousand-Palms Canyon, Colorado Desert 122 Comment
  POM9919  Stemodia durantifolia F. W. Peirson 1920-12-28 s.n. Riverside Murray Canyon near Palm Springs Comment
  RSA392815A  Oxytheca trilobata F. W. Peirson 1929-7-29 5020 Riverside Banning to Idyllwild Road 1768 Comment
  RSA446662  Stachys bullata F. W. Peirson 1924-6-21 4709 Riverside Temescal Canyon. 290 Comment
  RSA65154  Eriogonum elongatum F. W. Peirson 1933-4-15 10651 Riverside Whitewater River, 4.5 miles above the bridge. 701 Comment
  RSA65200  Chorizanthe brevicornu var. brevicornu F. W. Peirson 1920-2-16 1775 Riverside East of Palm Springs. Comment
  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
  RSA65363  Atriplex canescens var. laciniata F. W. Peirson 1924-12-30 s.n. Riverside Thousand Palms Canyon, Coachella Valley. 122 Comment
  RSA65413  Cistanthe monandra F. W. Peirson 1921-4-13 4317 Riverside Foot of Deep Canyon, Coachella Valley 274 Comment
  RSA65623  Opuntia ramosissima F. W. Peirson 1928-4-24 7906 Riverside Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert. Comment
  RSA66240  Platystemon californicus F. W. Peirson 1922-4-28 5325 Riverside Temescal Canyon, SW Riverside Co. 274 Comment
  RSA66241  Platystemon californicus F. W. Peirson 1922-4-29 2935 Riverside South of Lake Elsinore. 381 Comment
  RSA66307  Argemone munita subsp. munita F. W. Peirson 1925-5-20 6015 Riverside Burned area in chaparral, 1 mile northwest of Dripping Spring, W. Riverside Co. 457 Comment
  RSA66733  Lepidium lasiocarpum F. W. Peirson 1920-2-15 2834 Riverside Palm Springs, Tahquitz Camp. Comment
  RSA66762  Arabis pulchra F. W. Peirson 1941-4-9 13077 Riverside Open desert among shrubs; Pinto Basin road at junction with road to Cottonwood Springs. Comment
  RSA67108  Myosurus minimus var. filiformis F. W. Peirson 1922-5-20 3035 Riverside Hemet Valley, San Jacinto Mts. 1387 Comment
  RSA68622  Calochortus weedii var. weedii Frank W. Peirson 1920-6-22 2180 Riverside Grade south of Temecula River, going toward Dripping Spring 427 Comment
  RSA68694  Muilla maritima F. W. Peirson 1922-5-20 3046 Riverside Hemet Valley. (San Jacinto Mountains) 1402 Comment
  RSA69269  Chimaphila menziesii F. W. Peirson 1924-7-27 4986 Riverside Dark Canyon, San Jacinto Mts. 1905 Comment
  RSA69414  Delphinium parryi F. W. Peirson 1929-5-4 8337 Riverside Mostly about bushes on low hill about 2 miles south of summit of St. Johns Grade south of Hemet. 701 Comment
  RSA69915  Asclepias subulata F. W. Peirson 1928-4-23 7886 Riverside in sandy wash land; 6 mi. n.e. of Mecca, on road to Blythe Comment
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Oct 23 2011
  RSA70039  Arthrocnemum subterminale F. W. Peirson 1922-5-19 3068 Riverside 2 miles southeast of Perris Comment
  RSA70347  Funastrum hirtellum F. W. Peirson 1927-4-12 7160 Riverside Painted Canyon, near Mecca Comment
  RSA70413  Arctostaphylos pungens F. W. Peirson 1922-5-20 4465 Riverside Hemet Valley, San Jacinto Mts. 1494 Comment
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Mar 16 2007
  RSA70554  Croton californicus var. mohavensis F. W. Peirson 1920-2-14 s.n. Riverside Whitewater Station, Colorado Desert Comment
  RSA70608  Agave deserti subsp. deserti Frank W. Peirson 1921-4-13 2290 Riverside Deep Canyon; north base of Santa Rosa Mountains, Riverside. 335 Comment
  RSA70996  Cuscuta californica F. W. Peirson 1914-04 898 Riverside Whitewater at head of Coachella Valley. Comment
  RSA71009  Cuscuta salina F. W. Peirson 1924-6-21 4760 Riverside Along south end of Lake Elsinore 381 Comment
  RSA71017  Cressa truxillensis F. W. Peirson 1922-5-21 4254 Riverside near foot of Jack Rabbit Grade. (south of Moreno) 427 Comment
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Mar 20 2011
  RSA71807  Gilia stellata F. W. Peirson 1920-2-16 2297 Riverside Foot of Alkali Canyon, southeast of Palm Canyon, east base of San Jacintos Mountains Comment
  RSA71929  Aliciella latifolia F. W. Peirson 1922-4-11 2871 Riverside Deep Canyon Region, north base of Santa Rosa Mountains Comment
  RSA72245  Camissonia claviformis subsp. aurantiaca F. W. Peirson 1914-04 785 Riverside Whitewater at head of Coachella Valley. Comment
  RSA72287  Gilia angelensis F. W. Peirson 1929-5-4 8334 Riverside Summit of St John's grade. 792 Comment
  RSA73148  Navarretia fossalis F. W. Peirson 1922-5-19 4242 Riverside 5 miles northeast of Murrieta on road to Perris Comment
  RSA75398  Camissonia boothii subsp. condensata F. W. Peirson 1920-2-16 784 Riverside Colorado Desert. Garden of Eden east of Palm Springs. Comment
  RSA76032  Pholistoma membranaceum F. W. Peirson 1918-03 5304 Riverside Whitewater Grad, E of Beaumont. Comment
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Feb 3 2013
  RSA76968  Ziziphus parryi F. W. Peirson 1922-4-9 2870 Riverside Andreas Canyon, Palm Springs Region. 366 Comment
  RSA77071  Langloisia setosissima subsp. setosissima F. W. Peirson 1921-4-11 4475 Riverside Deep Canyon Wash, south side of Coachella Valley 244 Comment
  RSA77076  Langloisia setosissima subsp. setosissima F. W. Peirson 1935-4-17 s.n. Riverside 30 miles north of Blythe. Comment
  RSA77238  Eriodictyon crassifolium F. W. Peirson 1921-3-22 990 Riverside Murray Canyon, Near Palm Springs. 366 Comment
  RSA77439  Angelica tomentosa F. W. Peirson 1924-7-29 5024 Riverside Open Mountain slope on road from Banning to Idyllwild, San Jacinto Mountains. 1677 Comment
  RSA77846  Callitriche marginata F. W. Peirson 1922-5-12 3067 Riverside South of Lake Elsinore. Comment
  RSA77862  Pectocarya platycarpa F. W. Peirson 1920-2-16 1014 Riverside Palm Canyon stream below the canyon, Palm Springs. region Comment
  RSA77889  Tiquilia palmeri F. W. Peirson 1927-4-12 7176 Riverside Painted Canyon, near Mecca Comment
  RSA79569  Cryptantha holoptera F. W. Peirson 1935-4-17 11475 Riverside 30 miles north of Blythe. Comment
  RSA79588  Cryptantha angustifolia F. W. Peirson 1926-2-22 6508 Riverside Thousand-Palms Canyon; Coachella Valley Comment
  RSA79591  Cryptantha barbigera F. W. Peirson 1919-4-13 1026 Riverside Tahquitz Canyon, near Palm Springs. Comment
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Sep 18 2011
  RSA79596  Cryptantha barbigera F. W. Peirson 1928-3-10 7710 Riverside Near Hidden Spring, N of Salton Sea, Riverside County. Comment
  RSA79608  Cryptantha angustifolia F. W. Peirson 1928-3-10 7704 Riverside Flat areas where water had stood, near sand dunes W of Indio Comment
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Oct 23 2011
  RSA79623  Cryptantha utahensis F. W. Peirson 1919-4-13 1025 Riverside Murray Canyon, Palm Springs region. Comment
  RSA80251  Mohavea confertiflora F. W. Peirson 1928-3-10 7708 Riverside Hidden Spring, northern Colorado Desert. Comment
  RSA80435  Antirrhinum filipes F. W. Peirson 1920-2-16 1101 Riverside Palm Canyon stream below the canyon, Palm Springs. region Comment
  RSA80482  Mimulus diffusus F. W. Peirson 1922-4-30 2934 Riverside hills south of Tucalota Creek, below summit to St. Johns grade, road from Hemet to Aguanga Comment
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May 29 2011
  RSA80741  Cryptantha maritima F. W. Peirson 1919-4-13 1027 Riverside first canyon east of Palm Canyon, Palm Springs region. Comment
  RSA80751  Cryptantha racemosa F. W. Peirson 1920-2-16 4718 Riverside Foot of Alkali Canyon, southeast of Palm Canyon, Coachella Valley. Comment
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Aug 30 2011
  RSA82009  Justicia californica F. W. Peirson 1916-04 1172 Riverside abundant about mouth of Tahquitz Canyon, Palm Springs. 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
  RSA82574  Stachys rigida subsp. quercetorum F. W. Peirson 1924-6-21 4759 Riverside Temescal Canyon. 290 Comment
  RSA84385  Lithophragma affine subsp. mixtum F. W. Peirson 1922-5-19 4189 Riverside San Jacinto River. 1143 Comment
  RSA84404  Jepsonia parryi F. W. Peirson 1922-12-27 3337 Riverside Between forks of Andreas Canyon, near Palm Springs 609 Comment
  RSA84991  Adiantum capillus-veneris F. W. Peirson 1919-4-13 1521 Riverside First canyon east of Palm Canyon, Palm Springs region. Comment
  RSA85057  Ephedra aspera F. W. Peirson 1922-4-9 3339 Riverside Andreas Canyon near Palm Springs. 426 Comment
  RSA85864  Cheilanthes newberryi F. W. Peirson 1922-4-30 2929 Riverside foot of St Johns Grade, south of Hemet Comment
  RSA85940  Selaginella eremophila Frank W. Peirson 1920-2-15 1531 Riverside Tahquitz Canyon near Palm Springs Comment
  RSA87035  Lupinus shockleyi F. W. Peirson 1922-4-18 2434 Riverside Whitewater River, head of Coachella Valley, Riverside County Comment
  RSA87096  Lupinus concinnus subsp. optatus F. W. Peirson 1938-5-30 s.n. Riverside Thomas Mountain, Hemet Valley. 1402 Comment
  RSA87356  Muhlenbergia microsperma F. W. Peirson 1921-3-22 4323 Riverside Andreas Canyon, Palm Springs region Comment
  RSA87459  Lupinus concinnus subsp. optatus F. W. Peirson 1922-5-19 7721 Riverside Road to Keenes Camp, San Jacinto Mts. Comment
  RSA90697  Gutierrezia californica F. W. Peirson 1920-12-28 5298 Riverside Murray Canyon near Palm Springs Comment
  RSA92097  Carex nebrascensis F. W. Peirson 1924-7-27 5002 Riverside South side of Dark Canyon, San Jacinto Mountains. 2499 Comment
  RSA92916  Eriophyllum ambiguum var. paleaceum F. W. Peirson 1919-4-13 1372 Riverside Tahquitz Canyon, near Palm Springs. Comment
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Sep 18 2011
  RSA93159  Baccharis sergiloides F. W. Peirson 1920-12-28 1295 Riverside Murray Canyon near Palm Springs Comment
  SD87651  Cryptantha utahensis F. W. Peirson 1919-4-13 1025 Riverside Murray Canyon Comment
  UC1076215  Tidestromia oblongifolia Frank W. Peirson 1924-12-30 5416 Riverside 1000 Palm Canyon 121 Comment
  UC501518  Tidestromia oblongifolia Frank W. Peirson 1924-12-30 5416 Riverside 1000-Palms. North of the Palm Grove. 121 Comment
  UC501636  Triodanis biflora Frank W. Peirson 1926-5-2 6723 Riverside grade n Dripping Spring; n of Dripping Spring 426 Comment
  UC511837  Baccharis salicifolia subsp. salicifolia Frank W. Peirson 1933-4-15 10654 Riverside 4 1/2 mi above bridge; Whitewater River 701 Comment
  UC908107  Saltugilia australis Frank W. Peirson 1921-3-22 4136 Riverside Murray Canyon Colorado Desert, Murray Canyon Comment
  UC909116  Langloisia setosissima subsp. setosissima Frank W. Peirson 1927-4-12 7177 Riverside at camp near forks Painted Canyon; Colorado Desert, Painted Canyon Comment
  UCD50378  Achnatherum hymenoides F. W. Peirson 1921-3-24 4322 Riverside White Water, Colorado Desert Comment
  UCR142735  Encelia farinosa F. W. Peirson 1922-4-9 1331 Riverside San Jacinto Mountains/ Sonoran (Colorado) Desert, Murray Canyon, Palm Springs region, c. 0.5 mi. above mouth 305 Comment
  UCR70880  Juncus sphaerocarpus F. W. Peirson 1922-5-19 3019 Riverside Menifee Valley 457 Comment
  RSA0018963  Thalictrum fendleri var. fendleri F. W. Peirson 1924-7-27 4995 Riverside Deer Springs, San Jacinto Mtns. 2668 Comment
  RSA0022930  Eschscholzia androuxii F. W. Peirson 1928-4-23 7888 Riverside 2.5 miles below cottonwood Springs. Comment
  RSA0022931  Eschscholzia androuxii F. W. Peirson 1926-2-22 s.n. Riverside Thousand Palm canyon, near Indio. Comment
  RSA0023471  Tropidocarpum gracile F. W. Peirson 1918-1 1901 Riverside Whitewater, head of Coachella Valley. Comment
  RSA0117462  Collinsia concolor F. W. Peirson 1921-5-19 3040 Riverside Rocky slope not far from floor of Hemet Valley. 1341 Comment
  RSA0121585  Eriastrum sapphirinum subsp. dasyanthum F. W. Peirson 1920-6-22 4474 Riverside Dripping Spring southeast of Temecula 457 Comment
  RSA65025  Silene multinervia F. W. Peirson 1925-5-20 6013 Riverside Burned area in chaparral, 1 mile northwest of Dripping Spring, W. Riverside Co. 457 Comment
  RSA90156  Astragalus didymocarpus F. W. Peirson 1914-1 576 Riverside Whitewater, east of Cabezon Comment
  RSA90309  Lotus salsuginosus var. brevivexillus F. W. Peirson 1922-4-9 2873 Riverside In canyon eastward from lower part of Palm Canyon. Comment
  RSA90339  Lotus wrangelianus F. W. Peirson 1922-4-29 4081 Riverside Dripping Spring, Temecula River, southwestern Riverside Co. 457 Comment
  RSA90892  Carex sartwelliana F. W. Peirson 1924-7-28 5015 Riverside Pine Flats Camp 1799 Comment
  RSA91079  Trifolium depauperatum var. truncatum F. W. Peirson 1922-4-29 2938 Riverside Mud flat south of Elsinore Comment
  RSA91372  Psorothamnus emoryi F. W. Peirson 1924-12-30 5417 Riverside Thousand-Palms Canyon, Colorado Desert 122 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
  RSA91430  Dalea mollis F. W. Peirson 1932-3-22 9811 Riverside 20 miles North of Blythe on the road to Needles, Eastern Riverside. 152 Comment
  RSA91431  Dalea mollissima F. W. Peirson 1916-04 570 Riverside Region of Palm Springs. Comment
  RSA91514  Poa secunda F. W. Peirson 1921-3-22 5368 Riverside Murray Canyon, near Palm Springs 396 Comment
  RSA91697  Gnaphalium palustre F. W. Peirson 1930-5-10 8769 Riverside Roadside, on Hemet Plateau near March Field, between Riverside and Perris. 457 Comment
  RSA92505  Stylocline gnaphaloides F. W. Peirson 1930-5-10 8775 Riverside Summit of St. Johns Grade, south of Hemet. 762 Comment
  RSA92511  Eriophyllum multicaule F. W. Peirson 1928-4-19 7842 Riverside Hills N of Elsinore 457 Comment
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Oct 23 2011
  RSA92991  Lasthenia coronaria F. W. Peirson 1922-5-19 4519 Riverside 5 miles NE of Murrieta 457 Comment
  RSA93281  Pentachaeta aurea F. W. Peirson 1922-5-19 3037 Riverside San Jacinto River 1143 Comment
  RSA93327  Xylorhiza cognata F. W. Peirson 1927-4-12 7159 Riverside Painted Canyon, near Mecca Comment
  RSA93330  Downingia cuspidata F. W. Peirson 1922-4-29 2925 Riverside South of Lake Elsinore. 381 Comment
  RSA94066  Hemizonia kelloggii F. W. Peirson 1924-6-21 4757 Riverside Temescal Canyon. 290 Comment
  RSA94099  Hemizonia kelloggii F. W. Peirson 1925-5-20 6011 Riverside Aguanga. 610 Comment
  RSA94106  Peucephyllum schottii F. W. Peirson 1919-4-13 4737 Riverside First canyon S of Palm Canyon near Palm Springs. Comment
  RSA94115  Brickellia incana F. W. Peirson 1928-4-23 7889 Riverside 2.5 miles below cottonwood Springs, Riverside County Comment
  RSA94664  Senecio mohavensis F. W. Peirson 1921-3-22 2378 Riverside Murray Canyon near Palm Springs. 457 Comment
  RSA94930  Tetradymia comosa F. W. Peirson 1920-6-22 1428 Riverside Temescal Canyon. 305 Comment
  RSA95320  Sphaeralcea ambigua subsp. ambigua F. W. Peirson 1917-4-1 2065 Riverside Andreas Canyon near Palm Springs. Comment
  SEINET10458956  Triodanis biflora Frank W. Peirson Peirson 6723 Riverside DRIPPING SPRING 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-BC106576  Baileya pleniradiata Frank W. Peirson 1930-4-15 s.n. San Bernardino Las Vegas Road near Cima Road 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-BC132526  Calochortus striatus Frank W. Peirson 1924-5-14 4563 San Bernardino Box S. Springs Comment
  CAS-BOT-BC141852  Potentilla anserina F. W. Peirson 1943-5-30 13552 San Bernardino Baldwin Lake, San Bernardino Mts., southern California Comment
  CAS-BOT-BC142719  Phacelia exilis F. W. Peirson 1932-5-29 9969 San Bernardino on open plateau along road to Fish Hatchery, south of Baldwin Lake, San Bernardino Mts. 2103 Comment
  CAS-BOT-BC158155  Prunus emarginata F. W. Peirson; L. Constance 1941-6-24 s.n. San Bernardino Summit of ridge above Big Pines, north side of San Gabriel Mts., near line of Los Angeles and San Bernardino County Comment
  CAS-BOT-BC174065  Arenaria lanuginosa var. saxosa Frank W. Peirson 1922-6-24 s.n. San Bernardino San Bernardino Mts. Santa Ana Riv. at S.F. Comment
  CAS-BOT-BC205528  Sidalcea hickmanii subsp. parishii Frank W. Peirson 1924-7-16 4971 San Bernardino Barton Flats Road, San Bernardino Mts. 1524 Comment
  CAS-BOT-BC217405  Gentiana fremontii Frank W. Peirson 1922-6-22 3136 San Bernardino South Fork Santa Ana River, San Bernardino Mountains 2377 Comment
  CAS-BOT-BC217825  Perideridia parishii Frank W. Peirson 1924-9-2 5185 San Bernardino Fish Camp, San Bernardino Mts. 2057 Comment
  CAS-BOT-BC255539  Poa annua F. W. Peirson 1924-5-15 4538 San Bernardino At N side of Baldwin Lake, San Bernardino Mountains 2057 Comment
  CAS-BOT-BC293570  Erigeron aphanactis var. congestus Frank W. Peirson 1922-6-23 3102 San Bernardino Summit of Sugarloaf, San Bernardino Mts. 2987 Comment
  CAS-BOT-BC297168  Erigeron concinnus var. concinnus Frank W. Peirson 1924-5-15 4572 San Bernardino N. end of Baldwin Lake, San Bernardino Mts. Comment
  CAS-BOT-BC299871  Dieteria canescens var. canescens Frank W. Peirson 1929-9-16 8593 San Bernardino Near Baldwin Lake, San Bernardino Mts. 2103 Comment
  CAS-BOT-BC300558  Poa fendleriana subsp. longiligula Frank W. Peirson 1930-4-28 8756 San Bernardino Slope south of Baldwin Lake, Bear Valley, San Bernardino Mountains Comment
  CAS-BOT-BC31163  Carex lemmonii Frank W. Peirson 1922-6-22 3150 San Bernardino South Fork Santa Ana River meadows, San Bernardino Mts. 2377 Comment
  CAS-BOT-BC363637  Senecio fremontii var. occidentalis Frank W. Peirson 1923-8-24 3994 San Bernardino San Bernaridno Mts. Summit San Gorgonio Peak Comment
  CAS-BOT-BC41619  Draba corrugata var. corrugata Frank W. Peirson 1930-7-4 8997 San Bernardino San Bernardino Mountains. Greene Creek, north slope Sugarloaf. 2514 Comment
  CAS-BOT-BC60800  Physaria tenella Frank W. Peirson 1930-4-16 8744 San Bernardino 18 miles north of Goffs on the Cima Road. Comment
  CAS-BOT-BC83166  Eschscholzia minutiflora Frank W. Peirson 1922-5-13 4176 San Bernardino 2 miles north of Granite Wells. Comment
  CAS-BOT-BC98455  Symphyotrichum spathulatum F. W. Peirson 1924-9-2 5184 San Bernardino Fish Camp, San Bernardino Mts. 2057 Comment
  JEPS1430  Nama californica Frank W. Peirson 1921-5-29 2421 San Bernardino n slope Cajon Pass; San Gabriel Mountains, n slope Cajon Pass 1097 Comment
  JEPS16107  Lomatium dissectum var. multifidum Frank W. Peirson 1920-5-19 2153 San Bernardino San Gabriel Mts., Coldwater Canyon 1676 Comment
  JEPS31388  Gentiana fremontii Frank W. Peirson 1922-6-22 3136 San Bernardino San Bernardino Mts, South Fork Santa Ana River South Fork Santa Ana River; San Bernardino Mts, South Fork Santa Ana River 2377 Comment
  JEPS31871  Symphyotrichum frondosum Frank W. Peirson 1924-5 4595 San Bernardino Baldwin Lake San Bernardino Mts. 2036 Comment
  JEPS33190  Trifolium longipes var. nevadense Frank W. Peirson 1924-5-16 4598 San Bernardino 2.5 mi from Dam (s side of Bear Lake); San Bernardino Mtns Comment
  JEPS36842  Stephanomeria pauciflora F. W. Peirson 1920-9-15 250 a San Bernardino Lytle Creek San Gabriel Mts., Lytle Creek 1828 Comment
  JEPS37419  Senecio fremontii var. occidentalis Frank W. Peirson 1923-8-24 3994 San Bernardino near summit San Gorgonio 3352 Comment
  JEPS38087  Tetradymia canescens F. W. Peirson 1920-9-15 1431 San Bernardino North Fork Lytle Creek, sw San Bernerdino Mts. San Gabriel Mts. 1828 Comment
  JEPS39342  Epilobium glaberrimum subsp. glaberrimum F. W. Peirson 1918-7-7 124 San Bernardino Icehouse Canyon San Gabriel Mts. 1981 Comment
  JEPS44523  Horkelia rydbergii Frank W. Peirson 3286 San Bernardino San Bernardino Mountains, South Fork Santa Ana River 2377 Comment
  JEPS48043  Sedum niveum Frank W. Peirson 1922-8-24 3293 San Bernardino rocky ledge above Dollar Lake; San Bernardino Mountains, Dollar Lake 2834 Comment
  JEPS48057  Sedum niveum Frank W. Peirson 1924-7-14 4951 San Bernardino Lost Creek , Lost Creek (San Bernardino Mountains) 2438 Comment
  JEPS48969  Sisyrinchium bellum Frank W. Peirson 1918-7-8 11 San Bernardino San Antonio Canyon 1828 Comment
  JEPS50883  Silene verecunda Frank Peirson 1918-7-7 40 San Bernardino Ontario Ridge San Antonio Range, Ontario Ridge 2438 Comment
  JEPS51408  Arenaria lanuginosa subsp. saxosa Frank W. Peirson 1923-8-22 3975 San Bernardino Vivian Creek Camp 2194 Comment
  JEPS55755  Lotus procumbens var. procumbens Frank W. Peirson 1918-6-18 101 San Bernardino Summit Cajon Pass San Gabriel Mountains Comment
  JEPS56178  Eriogonum umbellatum var. munzii Frank W. Peirson 1922-7-7 3177 San Bernardino Sheep Creek 1615 Comment
  JEPS56307  Eriogonum saxatile Frank W. Peirson 1918-7-8 25 San Bernardino Baldy (Mt. San Antonio) 2743 Comment
  JEPS58289  Linanthus breviculus Frank W. Peirson 1921-5-29 2420 San Bernardino Cajon Pass, n slope San Gabriel Mountains 1097 Comment
  JEPS59833  Monolepis spathulata F. W. Peirson 3287 San Bernardino Cienega Seca Creek; San Bernardino Mts., Cienega Seca Creek 2255 Comment
  JEPS6302 Image available Physaria kingii subsp. bernardina Frank W. Peirson 1924-5 4600 San Bernardino East end Bear Lake, San Bernardino Mountains. 2042 Comment
  JEPS7542  Penstemon X parishii F. W. Peirson 1921-5-30 2429 San Bernardino road to Lone Pine Canyon SAn Gabriel Mountains, road to Lone Pine Canyon (San Gabriel Mountains) 990 Comment
  JEPS9474  Galium angustifolium subsp. gabrielense F. W. Peirson 1918-5-27 216 San Bernardino San Antonio Canyon 1371 Comment
  OBI50445  Thelypodium stenopetalum Frank W. Peirson 1933-1 San Bernardino Comment
  PASA1717  Erigeron breweri Frank W. Peirson 1930-7-4 San Bernardino Greene Creek, north slope sugarloaf, San Bernardino Mts. 2514 Comment
  PASA1725  Erigeron divergens Frank W. Peirson 1930-7-2 San Bernardino North shore of Baldwin Lake, San Bernardino Mts. 2042 Comment
  PASA1810  Corethrogyne filaginifolia Frank W. Peirson 1922-8-25 San Bernardino South Fork Santa Ana River, San Bernardino Mts. 2499 Comment
  PASA2164  Brickellia microphylla Frank W. Peirson 1920-9-15 San Bernardino Lytle Creek, San Gabriel Mts. 1828 Comment
  PASA2279  Antennaria dioica Frank W. Peirson 1930-7-4 San Bernardino Greene Creek, north slope Sugarloaf, San Bernardino Mts. 2590 Comment
  PASA2374  Acer negundo var. californicum Frank W. Peirson 1924-7-16 San Bernardino Oak Glen, south base San Bernardino Mts. 1462 Comment
  PASA2636  Ranunculus cymbalaria Frank W. Peirson 1930-7-1 8963 San Bernardino Southwest shore of Baldwin Lake, San Bernadino Mtns. 2042 Comment
  PASA2708  Astragalus acutirostris Frank W. Peirson 1930-5-31 8925 San Bernardino Summit of grade above Warrens Well Comment
  PASA430  Hypericum formosum Frank W. Peirson 1924-9-2 San Bernardino Fish Camp (City Creek Road), San Bernardino Mts. 2057 Comment
  PASA552  Allium parryi Frank W. Peirson 1930-7-7 San Bernardino Arrastre Flat, San Bernardino Mts. 2285 Comment
  PASA581  Abronia nana Frank W. Peirson 1930-7-5 San Bernardino North shore of Bear Lake, San Bernardino Mountains Comment
  PASA678  Geranium richardsonii Frank W. Peirson 1930-7-4 San Bernardino Green Creek, north slope Sugarloaf, San Bernardino Mts. Comment
  PASA93  Cordylanthus nevinii Frank W. Peirson 1926-9-5 San Bernardino Arrowhead Lake, San Bernardino Mts. 1523 Comment
  POM171917  Dudleya saxosa subsp. aloides F. W. Peirson 1930-5-31 8926 San Bernardino Summit of grade above Warrens Well. Little San Bern Mtns. Comment
  POM175476  Artemisia ludoviciana subsp. ludoviciana F. W. Peirson 1931-10-10 9601 San Bernardino Baldwin Lake, San Bernardino Mountains 2073 Comment
  POM203378  Descurainia pinnata subsp. halictorum F. W. Peirson 1933-6-25 10673 San Bernardino in a low open valley southeast of Baldwin Lake, about 2 miles east of Fish Hatchery, San Bernardino Mountains 2133 Comment
  POM212920  Salvia mohavensis F. W. Peirson 1935-4-18 11496 San Bernardino Whipple Mountains: In a valley in the north part of the range not far from the road going down into Copper Basin. Comment
  POM212922  Phacelia crenulata var. minutiflora F. W. Peirson 1935-4-18 11493 San Bernardino Copper Basin, Whipple Mts., eastern San Bernardino Co. 457 Comment
  RSA364617  Carex bolanderi F. W. Peirson 1924-7-14 4963 San Bernardino Lost Creek, San Bernardino Mountains. Comment
  RSA64793  Chenopodium atrovirens F. W. Peirson 1923-8-31 5272 San Bernardino Blue Ridge, north side of San Gabriel Mts near Los Angeles-San Bernardino Co. line 2590 Comment
  RSA64892  Oxytheca caryophylloides F. W. Peirson 1926-9-5 7080 San Bernardino Lake Arrowhead 1524 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
  RSA65065  Silene krantzii F. W. Peirson 1923-4-24 615 San Bernardino Summit od San Gorgonio Peak. 3476 Comment
  RSA65083  Eriogonum gracillimum F. W. Peirson 1932-11-13 10485 San Bernardino Deadman Point, east of Victorville. 915 Comment
  RSA65144  Eriogonum fasciculatum var. polifolium F. W. Peirson 1930-5-31 8927 San Bernardino Summit of grade above Warrens Well. Little San Bern Mtns. Comment
  RSA65357  Atriplex canescens var. laciniata F. W. Peirson 1928-9-5 8199 San Bernardino Near Old Woman Springs, s. Mojave Desert . 970 Comment
  RSA65379  Atriplex lentiformis F. W. Peirson 1924-8-31 s.n. San Bernardino Victorville, Mojave Desert. 793 Comment
  RSA65883  Monolepis spathulata F. W. Peirson 1922-6-21 3148 San Bernardino East of Big Meadows, upper Santa Ana River, San Bernardino Mountains 2165 Comment
  RSA65911  Eriogonum nidularium F. W. Peirson 1927-5-7 7277 San Bernardino 1 mile east of Kramer. 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
  RSA65982  Eriogonum inflatum var. inflatum F. W. Peirson 1935-4-18 11479 San Bernardino Copper Basin Creek, Whipple Mountains Comment
  RSA65990  Eriogonum umbellatum subsp. munzii F. W. Peirson 1920-8-22 2247 San Bernardino East of Foxesee Creek [Forsee Creek], San Bernardino Mountains. 2134 Comment
  RSA66059  Nasturtium officinale F. W. Peirson 1919-4-16 372 San Bernardino Cajon Pass, west end of San Bernardino Mts. 686 Comment
  RSA66092  Tropidocarpum gracile F. W. Peirson 1922-5-13 2964 San Bernardino Granite Wells, Mojave Desert. Comment
  RSA66250  Arabis hirsuta var. glabrata F. W. Peirson 1922-8-27 6350 San Bernardino Santa Ana River, San Bernardino Mts 1936 Comment
  RSA66320  Polygonum lapathifolium F. W. Peirson 1920-6-22 1791 San Bernardino 2 miles south of Chino Comment
  RSA66490  Eschscholzia glyptosperma F. W. Peirson 1922-5-14 3003 San Bernardino 5 miles north of Barstow. Comment
  RSA66491  Eschscholzia glyptosperma F. W. Peirson 1928-4-1 7771 San Bernardino canyon floor about 4 mi. below Bradbury Well, on road to Old Confidence Mill, Death Valley Region. Comment
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Dec 12 2016
  RSA66522  Arabis holboellii var. pinetorum F. W. Peirson 1922-6-22 3135 San Bernardino South Fork of Santa Ana River 2348 Comment
  RSA66587  Lesquerella tenella F. W. Peirson 1932-3-23 9812 San Bernardino 35 miles S of Needles on road to Blythe. Comment
  RSA66684  Lepidium fremontii F. W. Peirson 1916-7-9 678 San Bernardino Mojave Desert, near Victorville. Comment
  RSA66714  Streptanthus bernardinus F. W. Peirson 1926-9-5 7075 San Bernardino Lake Arrowhead 1524 Comment
  RSA66746  Eschscholzia minutiflora F. W. Peirson 1922-5-13 4176 San Bernardino 2 miles north of Granite Wells, Mojave Desert. Comment
  RSA66802  Thelypodium stenopetalum F. W. Peirson 1926-5-30 6741 San Bernardino North side of Baldwin Lake. San Bernardino Mountains. 2043 Comment
  RSA68646  Calochortus palmeri var. palmeri Frank W. Peirson 1924-7-6 4923 San Bernardino North shore of Bear Lake (Nr its West end) 2042 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
  RSA69037  Dodecatheon alpinum subsp. majus F. W. Peirson 1906-8-15 s.n. San Bernardino Bluff Lake, San Bernardino Mountains. 2256 Comment
  RSA69451  Juncus effusus subsp. austrocalifornicus F. W. Peirson 1922-6-20 3096 San Bernardino 4 miles east of San Bernardino. Comment
  RSA69531  Maianthemum stellatum Frank W. Peirson 1922-7-22 4101 San Bernardino South Fork of Santa Ana River, San Bernardino Mountains 2378 Comment
  RSA69543  Mentzelia reflexa F. W. Peirson 1932-3-24 9824 San Bernardino Baker, along SW base of rock hill 280 Comment
  RSA69659  Juncus macrophyllus F. W. Peirson 1922-8-27 3271 San Bernardino Barton Flats, San Bernardino Mountains. 1982 Comment
  RSA69686  Mentzelia obscura F. W. Peirson 1932-3-24 9819 San Bernardino Baker, along SW base of rock hill 280 Comment
  RSA69692  Mentzelia albicaulis F. W. Peirson 1927-5-8 7295 San Bernardino Half way between Victorville and Barstow. Comment
  RSA69729  Spirodela polyrhiza F. W. Peirson 1924-8-31 5110 San Bernardino South of Victorville. 793 Comment
  RSA69782  Gentiana simplex F. W. Peirson 1920-8-25 2256 San Bernardino South Fork of Santa Ana River 2439 Comment
  RSA69943  Nitrophila occidentalis F. W. Peirson 1916-7-8 855 San Bernardino Near western end of Baldwin Lake. San Bernardino Mts Comment
  RSA69974  Abronia nana var. covillei F. W. Peirson 1924-7-6 1845 San Bernardino North shore of Bear Lake (Nr its West end) 2043 Comment
  RSA70025  Suaeda moquinii F. W. Peirson 1924-8-31 5123 San Bernardino Open desert, 4 miles west of Box S Ranch, so. Mojave Desert 915 Comment
  RSA70052  Epipactis gigantea Frank W. Peirson 1922-7-7 5340 San Bernardino Rangers Cabin, Swarthout Valley, north side of San Gabriel Mountains/ W San Bernardino County. 1799 Comment
  RSA70065  Juncus parryi F. W. Peirson 1922-8-23 3267 San Bernardino North slope of Mt. San Gorgonio, San Bernardino Mountains. 2988 Comment
  RSA70182  Allium parryi F. W. Peirson 1916-7-6 1649 San Bernardino Bear Lake. San Bernardino Mts. Comment
  RSA70190  Allium fimbriatum var. mohavense F. W. Peirson 1922-5-12 2990 San Bernardino About 1 mile south of top of grade near Pilot Knob, Mojave Desert. Comment
  RSA70295  Juncus duranii F. W. Peirson 1918-7-7 1639 San Bernardino Kellly s Cabin, Ontario Ridge, San Gabriel Mountains. 2500 Comment
  RSA70363  Amsonia tomentosa var. tomentosa F. W. Peirson 1926-5-29 6737 San Bernardino Considerable clumps on roadside, Cactus Flat, San Bernardino Mts. 1799 Comment
  RSA70529  Calochortus invenustus Frank W. Peirson 1930-7-1 8964 San Bernardino Baldwin Lake 2043 Comment
  RSA70582  Sisyrinchium bellum Frank W. Peirson 1922-6-23 4103 San Bernardino Holcomb Creek, San Bernardino Mountains. 2439 Comment
  RSA70852  Arctostaphylos glandulosa subsp. glaucomollis F. W. Peirson 1924-9-2 5196 San Bernardino City Creek Road, San Bernardino Mts. 1524 Comment
  RSA71826  Saltugilia splendens F. W. Peirson 1930-7-8 9032 San Bernardino Fish Hatchery creek [possibly Green Canyon Creek], north slope of Sugarloaf, San Bernardino Mountains. 2256 Comment
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Aug 16 2011
  RSA71866  Allophyllum violaceum F. W. Peirson 1933-10-15 10926 San Bernardino Dry unused roadway on southwest slope of Baldwin Lake. 2058 Comment
  RSA72032  Polemonium occidentale F. W. Peirson 1922-8-25 3280 San Bernardino South fork of the Santa Ana River. 2530 Comment
  RSA72085  Microsteris gracilis subsp. gracilis F. W. Peirson 1922-6-22 3099 San Bernardino South Fork of Santa Ana River. 2622 Comment
  RSA72114  Epilobium brachycarpum F. W. Peirson 1916-7-6 2267 San Bernardino Bear Lake; San Bernardino Mountains. 2058 Comment
  RSA72234  Camissonia palmeri F. W. Peirson 1922-5-13 2977 San Bernardino Granite Wells, Mojave Desert. Comment
  RSA73030  Leptosiphon breviculus F. W. Peirson 1921-5-29 2420 San Bernardino Along old road, north slope of Cajon Pass. 1098 Comment
  RSA74170  Phacelia ambigua F. W. Peirson 1926-4-27 6679 San Bernardino Along rocky hill, 14 miles E of victorville Comment
  RSA74496  Phacelia neglecta F. W. Peirson 1932-3-24 9834 San Bernardino Baker. Along southwest base of rocky hills. Comment
  RSA74504  Phacelia mohavensis F. W. Peirson 1916-7-6 961 San Bernardino Bear Lake. San Bernardino Mts. 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
  RSA74728  Phacelia curvipes F. W. Peirson 1921-5-29 2431 San Bernardino north slope of Cajon Pass 1098 Comment
  RSA74934  Phacelia davidsonii F. W. Peirson 1919-6-6 s.n. San Bernardino San Antonio Canyon 1677 Comment
  RSA74945  Phacelia curvipes F. W. Peirson 1930-7-2 8969 San Bernardino Ridge south of summit of Johnson Grade, east end of San Bernardino Mountains. 2134 Comment
  RSA75127  Nemacladus sigmoideus F. W. Peirson 1926-5-30 6747 San Bernardino North side of Baldwin Lake. San Bernardino Mountains. 2043 Comment
  RSA75392  Oenothera cespitosa subsp. marginata F. W. Peirson 1926-5-30 6742 San Bernardino North side of Baldwin Lake. San Bernardino Mountains. 2043 Comment
  RSA75446  Camissonia confusa F. W. Peirson 1919-5-30 2706 San Bernardino San Antonio Canyon, San Gabriel Mts. 1677 Comment
  RSA75527  Phacelia fremontii F. W. Peirson 1930-4-16 8745 San Bernardino About 18 miles north of Goffs on the Cima Road. Comment
  RSA75686  Camissonia refracta F. W. Peirson 1930-4-14 8702 San Bernardino Sandy soil, near Cave Spring, Mojave Desert. Comment
  RSA77070  Langloisia setosissima subsp. punctata F. W. Peirson 1922-5-14 3009 San Bernardino Half between Barstow and Victorville. Comment
  RSA77164  Ceanothus leucodermis F. W. Peirson 1920-9-14 2281 San Bernardino Coldwater Canyon, San Gabriel Mts. 2134 Comment
  RSA77723  Viola pinetorum subsp. pinetorum F. W. Peirson 118 San Bernardino Summit of Mt. San Antonio. 3049 Comment
  RSA77875  Heliotropium curassavicum var. oculatum F. W. Peirson 1930-7-1 8962 San Bernardino Baldwin Lake. 2043 Comment
  RSA79632  Mimulus purpureus F. W. Peirson 1932-5-29 9968 San Bernardino Along road to Fish Hatchery, south of Baldwin Lake 2104 Comment
  RSA79990  Castilleja cinerea F. W. Peirson 1916-7-6 1155 San Bernardino Bear Lake. San Bernardino Mts. Comment
  RSA79991  Castilleja cinerea F. W. Peirson 1924-7-4 4962 San Bernardino Summit of main divide between Lost Creek and South Fork of Santa Ana River 2866 Comment
  RSA80059  Veronica peregrina subsp. xalapensis F. W. Peirson 1922-6-22 3109 San Bernardino South Fork of Santa Ana River 2348 Comment
  RSA80145  Mimulus bigelovii var. cuspidatus F. W. Peirson 1928-4-1 7772 San Bernardino canyon floor about 4 mi. below Bradbury Well, on road to Old Confidence Mill, Death Valley Region. Comment
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Dec 12 2016
  RSA80193  Plagiobothrys collinus var. ursinus F. W. Peirson 1922-6-25 3118 San Bernardino Barton Flats, San Bernardino Mountains. 1982 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
  RSA80228  Penstemon caesius F. W. Peirson 1930-7-4 8994 San Bernardino Greene Creek, north slope of Sugerloaf. 2515 Comment
  RSA80233  Penstemon rostriflorus F. W. Peirson 1926-9-5 7083 San Bernardino Lake Arrowhead. 1524 Comment
  RSA80320  Hydrocotyle ranunculoides F. W. Peirson 1920-6-22 2168 San Bernardino Chino Creek 152 Comment
  RSA80326  Hydrocotyle umbellata F. W. Peirson 1920-6-22 814 San Bernardino Chino Creek 152 Comment
  RSA80337  Heracleum maximum F. W. Peirson 1906-8-18 806 San Bernardino Upper Santa Ana River, southern California. Comment
  RSA80352  Conium maculatum F. W. Peirson 1920-5-18 2115 San Bernardino Lytle Creek, east end of San Gabriel Mts. 1067 Comment
  RSA80366  Perideridia parishii subsp. parishii F. W. Peirson 1924-9-2 5185 San Bernardino Fish Camp. 2058 Comment
  RSA80490  Mimulus primuloides var. pilosellus F. W. Peirson 1924-7-5 4905 San Bernardino Bluff Lake Meadows, San Bernardino Mountains. 2287 Comment
  RSA80703  Hypericum formosum var. scouleri F. W. Peirson 1924-9-2 5183 San Bernardino Fish Camp. Comment
  RSA81444  Castilleja montigena F. W. Peirson 1930-7-8 9040 San Bernardino Fish Hatchery creek [possibly Green Canyon Creek], north slope of Sugarloaf 2591 Comment
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Aug 16 2011
  RSA82078B  Orobanche fasciculata F. W. Peirson 1909-1 s.n. San Bernardino Dry Lake. Comment
  RSA82244  Castilleja miniata subsp. miniata F. W. Peirson 1920-9-14 2286 San Bernardino Coldwater Fork of Lytle Creek, eastern San Gabriel Mountains 2134 Comment
  RSA82254  Castilleja angustifolia F. W. Peirson 1922-5-13 4152 San Bernardino Granite Wells, Mojave Desert. Comment
  RSA82515  Verbena scabra F. W. Peirson 1924-9-2 5206 San Bernardino Santa Ana River Marshes, 2 miles south of San Bernardino. 305 Comment
  RSA83373  Monardella exilis F. W. Peirson 1924-5-14 4551 San Bernardino Open desert, 17 miles east of Victorville. Comment
  RSA85271  Holodiscus microphyllus F. W. Peirson 1922-7-21 5336 San Bernardino Devil's Backbone, San Gabriel Mountains 2668 Comment
  RSA85609  Potentilla biennis F. W. Peirson 1930-7-4 8993 San Bernardino Greene Creek, north slope of Sugarloaf 2439 Comment
  RSA85770  Potentilla glandulosa subsp. nevadensis F. W. Peirson 1924-7-5 5250 San Bernardino Bluff Lake, San Bernardino Mts 2287 Comment
  RSA85933  Selaginella asprella Frank W. Peirson 1922-7-18 3201 San Bernardino Summit of Ontario Ridge, above Kelly s Cabin 2546 Comment
  RSA85941  Selaginella watsonii Frank W. Peirson 1922-6-23 3125 San Bernardino San Bernardino Mts: summit of Sugarloaf Peak 2988 Comment
  RSA86290  Ivesia saxosa F. W. Peirson 1924-5-15 4605 San Bernardino Cactus Flat. 1799 Comment
  RSA86296  Potentilla wheeleri F. W. Peirson 1906-8-18 4279 San Bernardino Dry Lake. 2774 Comment
  RSA86530  Pinus attenuata F. W. Peirson 4583 San Bernardino City Creek Road. 1067 Comment
  RSA86649  Purshia tridentata var. glandulosa F. W. Peirson 1930-4-29 8759 San Bernardino Cactus Flats, east end of San Bernardino Mts. 1524 Comment
  RSA86680  Cercocarpus ledifolius F. W. Peirson 1920-5-29 79 San Bernardino Ontario Ridge, near Ontario Peak, San Gabriel Mtns., western San Bernardino Co. 2591 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
  RSA86716  Andropogon glomeratus F. W. Peirson 1924-9-2 5202 San Bernardino Arrowhead Hot Springs. 579 Comment
  RSA86769  Deschampsia elongata F. W. Peirson 1924-7-13 4934 San Bernardino big Meadows, upper Santa Ana River, San Bernardino Mountains. 2134 Comment
  RSA86943  Cercidium microphyllum F. W. Peirson 1935-4-19 11500 San Bernardino Whipple Mountains; Near Parker Dam site Comment
  RSA86953  Chrysolepis sempervirens F. W. Peirson 1921-7-19 15 San Bernardino Coldwater Fork of Lytle Creek. 2134 Comment
  RSA87010  Pickeringia montana var. tomentosa F. W. Peirson 1924-9-2 5197 San Bernardino City Creek Road, San Bernardino Mts. 1524 Comment
  RSA87394  Lupinus confertus F. W. Peirson 1924-7-5 8207 San Bernardino Baldwin Lake, San Bernardino Mountains Comment
  RSA88682  Carex lemmonii F. W. Peirson 1923-8-23 3970 San Bernardino High Creek, San Bernardino Mountains. 2774 Comment
  RSA88813  Carex fracta F. W. Peirson 1922-8-25 3279 San Bernardino South Fork of Santa Ana River, San Bernardino Mountains. 2348 Comment
  RSA90234  Astragalus lentiginosus var. sierrae F. W. Peirson 1924-5-15 4558 San Bernardino North end of Baldwin Lake 2037 Comment
  RSA90436  Oxytropis oreophila var. oreophila F. W. Peirson 1923-8-24 s.n. San Bernardino Summit of Mt. San Gorgonio, San Bernardino Mountains. 3476 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
  RSA91401  Trifolium longipes subsp. atrorubens F. W. Peirson 1926-5-31 6753 San Bernardino Bluff Lake. 2287 Comment
  RSA91639  Carex echinata subsp. echinata F. W. Peirson 1924-7-5 4899 San Bernardino Bluff Lake Meadows, San Bernardino Mountains. 2287 Comment
  RSA92679  Eriophyllum lanatum var. obovatum F. W. Peirson 1924-7-5 4906 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA93093  Erigeron parishii F. W. Peirson 1926-5-29 6736 San Bernardino Cushenbury Grade about 0.5 mile above Cushenbury Springs. North slope of San Bernardino Mts. Comment
  RSA94381  Dyssodia cooperi F. W. Peirson 1930-5-31 8928 San Bernardino Summit of grade above Warrens Well. Little San Bern Mtns. Comment
  RSA94527  Raillardella argentea F. W. Peirson 1922-8-23 1413 San Bernardino Summit of Mount San Gorgonio 3476 Comment
  RSA95193  Sidalcea hickmanii subsp. parishii F. W. Peirson 1922-6-24 4697 San Bernardino Foxesee Creek. 1829 Comment
  RSA95250  Taraxacum californicum F. W. Peirson 1922-6-21 4315 San Bernardino Head of Santa Ana river, just above Big Meadows 2165 Comment
  RSA95262  Sidalcea hickmanii subsp. parishii F. W. Peirson 1924-7-16 4971 San Bernardino Barton Flats Road. 1524 Comment
  RSA95384  Sidalcea malviflora subsp. dolosa F. W. Peirson 1922-6-23 2056 San Bernardino Upper Holcomb Creek 2363 Comment
  RSA97423  Oreonana vestita F. W. Peirson 1922-7-21 4054 San Bernardino Summit of Little Baldy (the peak due east of Mt. San Antonio) 2910 Comment
  SBBG28963  Lupinus concinnus F. W. Peirson 1921-5-29 San Bernardino summit of Cajon Pass 1219 Comment
  SBBG28976  Asclepias eriocarpa F. W. Peirson -- 884 San Bernardino San Bernardino Mtns Comment
  SBBG51908  Acer negundo F. W. Peirson 1924-7-19 San Bernardino Oak Glen, San Bernadino Mtns 1463 Comment
  SD87524  Langloisia setosissima subsp. punctata Frank W. Peirson 1927-5-7 7287 San Bernardino 4.0 miles west of Barstow. Comment
  SD87712  Layia glandulosa F. W. Peirson 1924-5-15 4591 San Bernardino Baldwin Lake, San Bernardino Mountains 2040 Comment
  SD87781  Astragalus nuttallianus var. imperfectus Frank W. Peirson 1935-4-18 11494 San Bernardino Whipple Mountains; north part of range near the road going down into Copper Basin. 455 Comment
  SD87792  Dudleya abramsii subsp. affinis Frank W. Peirson 1930-7-2 8972 San Bernardino Ridge south from summit of Johnson's Grade, San Bernardino Mountains. 2135 Comment
  SD87863  Phacelia austromontana Frank W. Peirson 1930-7-4 8986 San Bernardino San Bernardino Mts., north slope of Sugarloaf, Green Creek Comment
  UC1106912  Luzula comosa var. laxa Frank W. Peirson 1922-6-24 San Bernardino Santa Ana River San Bernardino Mts. 1920 Comment
  UC483077  Salix lasiolepis Frank W. Peirson 1919-6-6 717 San Bernardino North Fork San Antonio Creek 2286 Comment
  UC483086  Salix lasiandra var. lasiandra Frank W. Peirson 1932-5-30 9971 San Bernardino Green Valley San Bernardino Mts., Green Valley 2103 Comment
  UC501439  Centaurium venustum Frank W. Peirson 1922-6-20 4468 San Bernardino se of San Bernardino; Santa Ana River Comment
  UC501497  Ericameria nauseosa var. hololeuca Frank W. Peirson 1932-11-12 10488 San Bernardino sw of Baldwin Lake; San Bernardino Mountains 2133 Comment
  UC501580  Astragalus bicristatus Frank W. Peirson 1932-5-28 San Bernardino sw side Baldwin Lake San Bernardino Mts., Baldwin Lake 2057 Comment
  UC501631  Lessingia glandulifera var. glandulifera Frank W. Peirson 1921-5-29 1262 San Bernardino opposite Hesperia; Mohave River 868 Comment
  UC511861  Descurainia pinnata Frank W. Peirson 1933-6-25 10673 San Bernardino 2 mi se Baldwin Lake; San Bernardino Mts., Bear Valley 2133 Comment
  UC511916  Hesperostipa comata Frank W. Peirson 1933-6-24 8957 San Bernardino s shore Baldwin Lake; San Bernardino Mts. 2057 Comment
  UC570595  Calycoseris wrightii Frank W. Peirson 1935-4-18 11490 San Bernardino Copper Basin Creek Whipple Mountains, Copper Basin Creek Comment
  UC672177  Erigeron parishii Frank W. Peirson 1926-5-29 6736 San Bernardino about 1/2 mi above Cushenberry Springs; Cushenberry Grade Comment
  UC672181  Erigeron aphanactis var. congestus Frank W. Peirson 1923-8-24 1284 San Bernardino Summit San Gorgonio Peak 3490 Comment
  UC672263  Isocoma acradenia var. acradenia Frank W. Peirson 1924-8-31 5126 San Bernardino 1 mi w Box S Ranch; Mohave Desert 914 Comment
  UC672285  Arida carnosa Frank W. Peirson 1924-8-31 5131 San Bernardino Box S Spring 1082 Comment
  CAS-BOT-BC312635  Hymenopappus filifolius var. lugens Frank W. Peirson 1922-6-22 s.n. San Bernardino San Bernardino Mts. Ridge W. of S. F. Santa Ana Riv. Comment
  CAS-BOT-BC349732  Monoptilon bellidiforme F. W. Peirson 1928-3-31 7755 San Bernardino Near bridge over Mohave River north of Victorville Comment
  JEPS57074  Eriogonum baileyi var. baileyi Frank W. Peirson 1928-9-6 San Bernardino near Warrens Well; Mohave Desert Comment
  JEPS57632  Chorizanthe corrugata Frank W. Peirson 1928-4-1 7762 San Bernardino 28 mi n Baker (border Amargosa Wash); Border Amargosa WAsh Comment
  PASA1633  Cleomella oocarpa Frank W. Peirson 1924-9-1 San Bernardino Cushenbury Grade 1127 Comment
  POM193453  Lessingia glandulifera var. glandulifera F. W. Peirson 1929-9-16 s.n. San Bernardino Road to Fisheries S of Baldwin Lake, San Bernardino Mts. 2104 Comment
  POM193454  Aster ascendens F. W. Peirson 1929-9-11 8589 . San Bernardino Peter Pan Golf Course, Bear Valley, Bear Valley, San Bernardino Mts 2058 Comment
  POM9688  Chorizanthe xanti F. W. Peirson 1921-5-30 2419 San Bernardino Lone Pine Canyon, e. end of San Gabriel Mts. 1067 Comment
  POM9911  Limosella acaulis F. W. Peirson 1906-8-14 857 San Bernardino Bluff Lake, San Bernardino Mountains. 2439 Comment
  RSA0004790  Gilia latiflora subsp. elongata F. W. Peirson 1922-5-13 2985 San Bernardino 28 miles north of Barstow, near Seaberg's Well. Comment
  RSA0020146  Bromus tectorum F. W. Peirson 1924-5-14 4543 San Bernardino 12 miles east of Victorville. Comment
  RSA0074374  Heterotheca fastigiata F. W. Peirson 1920-9-15 4734 San Bernardino Lytle Creek, eastern San Gabriel Mts. 1905 Comment
  RSA0076244  Scutellaria austiniae F. W. Peirson 1924-7-6 4925 San Bernardino San Bernardino Mountains: City Creek Road. 1829 Comment
  RSA0083333  Pyrola picta F. W. Peirson 1922-8-24 3284 San Bernardino near summit of San Bernardino Ridge. 2744 Comment
  RSA0083779  Gilia ochroleuca subsp. bizonata Frank W. Peirson 1906-08 920 San Bernardino Icehouse Canyon Divide. San Gabriel Mountains. 2408 Comment
  RSA0117284  Collinsia parviflora F. W. Peirson 1922-6-24 3141 San Bernardino Santa Ana River at mouth of South Fork. 1921 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
  RSA0123421  Eriastrum sapphirinum subsp. brevibracteatum F. W. Peirson 1926-5-29 6735 San Bernardino Deadman Point, east of Victorville. Comment
  RSA65274  Chorizanthe xanti F. W. Peirson 1921-7-18 2501 San Bernardino Lytle Creek Road up Coldwater Fork, east end of San Gabriel Mts. 1524 Comment
  RSA66545  Dithyrea californica F. W. Peirson 1930-4-29 8763 San Bernardino Open desert near Box S Ranch, SW San Bernardino County. 915 Comment
  RSA69273  Chimaphila umbellata subsp. occidentalis F. W. Peirson 1924-7-14 4964 San Bernardino Slope E of S Fork Santa Ana. 2744 Comment
  RSA69716  Mentzelia dispersa F. W. Peirson 1924-7-16 4970 San Bernardino Road to Barton Flats, San Bernardino Mts. 1677 Comment
  RSA75349  Phacelia calthifolia F. W. Peirson 1928-4-1 7767 San Bernardino Amargosa Wash, 36 miles N of Baker, San Bernardino county. Comment
  RSA79866  Penstemon rostriflorus F. W. Peirson 1922-7-19 3206 San Bernardino Divide between Cucamonga and Ontario Peaks, San Gabriel Mtns, 2409 Comment
  RSA79905  Physalis philadelphica F. W. Peirson 1923-8-26 3996 San Bernardino above road to Seven Oaks, in Mill Creek. 1220 Comment
  RSA79910  Solanum elaeagnifolium F. W. Peirson 1938-4-11 12377 San Bernardino strong patch in triangular space between two roads in east part of Needles, eastern San Bernardino. 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
  RSA82527  Verbascum thapsus F. W. Peirson 1924-7-26 4978 San Bernardino Little San Gorgonio Creek, Oak Glen region. 1220 Comment
  RSA82995  Salvia dorrii var. pilosa F. W. Peirson 1917-5-13 s.n. San Bernardino Victorville, Mojave Desert. Comment
  RSA85776  Sibbaldia procumbens F. W. Peirson 1920-8-22 2262 San Bernardino Foxesee Creek [Forsee Creek], San Bernardino Mountains. 2744 Comment
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Jun 12 2015
  RSA90150  Astragalus cimae var. cimae F. W. Peirson 1930-4-16 8738 San Bernardino Summit of grade on Cima Road, over New York Mountains 1828 Comment
  RSA90245  Astragalus layneae F. W. Peirson 1922-5-14 3011 San Bernardino 10 miles N of Barstow. Comment
  RSA90365  Lotus heermannii F. W. Peirson 1920-8-26 4090 San Bernardino Santa Ana River 1372 Comment
  RSA90397  Lotus argyraeus var. argyraeus F. W. Peirson 1924-7-6 4297 San Bernardino Pine woods near Lake Arrowhead 1524 Comment
  RSA90406  Lotus argyraeus F. W. Peirson 1933-6-24 10677 San Bernardino Along ridge Southward from summit of Johnson Grade, eastern San Bernardino Mts 2134 Comment
  RSA90734  Astragalus acutirostris F. W. Peirson 1926-5-9 6734 San Bernardino About 10 miles west of Victorville. Comment
  RSA91063  Trifolium longipes subsp. atrorubens F. W. Peirson 1926-5-30 6749 San Bernardino South side of Bear Lake near road to Santa Ana River, about 2 miles from Dam 2043 Comment
  RSA91270  Isocoma acradenia var. eremophila F. W. Peirson 1924-8-31 5128 San Bernardino Box S Springs, north base of San Bernardino Mountains. 1082 Comment
  RSA91745  Muhlenbergia rigens F. W. Peirson 1924-9-2 5195 San Bernardino Near road to Deep Creek on City Creek Road. 1829 Comment
  RSA92274  Layia glandulosa F. W. Peirson 1926-5-29 6740 San Bernardino Cactus Flat, San Bernardino Mtns. 1829 Comment
  RSA92308  Poa secunda F. W. Peirson 1924-7-5 4918 San Bernardino Baldwin lake Comment
  RSA92413  Coreopsis bigelovii F. W. Peirson 1921-3-29 4238 San Bernardino Hill slopes above road at Cajon Pass. 1220 Comment
  RSA92445  Panicum urvilleanum F. W. Peirson 1922-5-14 2965 San Bernardino along bank north of railroad tracks, Barstow Comment
  RSA92471  Coreopsis californica F. W. Peirson 1928-4-26 7925 San Bernardino 7 miles W of 29 Palms. Comment
  RSA92647  Salix lasiolepis F. W. Peirson 1923-3-23 4293 San Bernardino River crossing about 4 miles southeast of San Bernardino. Comment
  RSA92866  Urtica dioica subsp. holosericea F. W. Peirson 1919-6-6 30 San Bernardino North Fork of San Antonio Creek, San Gabriel Mts. 2439 Comment
  RSA93070  Machaeranthera arida F. W. Peirson 1928-4-1 7758 San Bernardino Silver Lake, about 8 miles north of Baker, e. Mojave Desert. Comment
  RSA93076  Solidago californica F. W. Peirson 1924-9-2 5178 San Bernardino Fish Camp, San Bernardino Mountains 2058 Comment
  RSA93149  Aster ascendens F. W. Peirson 1924-9-1 5165 San Bernardino North side of Baldwin Lake, San Bernardino Mountains. 2043 Comment
  RSA93180  Machaeranthera canescens F. W. Peirson 1929-9-16 8593 San Bernardino Along road to Fisheres S of Baldwin Lake, San Sanbernadino Mts. 2104 Comment
  RSA93181  Machaeranthera canescens F. W. Peirson 1927-7-10 7357 San Bernardino Mexican Well, eastern border of San Bernardino Co. 1220 Comment
  RSA93343  Xylorhiza tortifolia F. W. Peirson 1922-5-14 3000 San Bernardino 5 miles north of Barstow. Comment
  RSA93627  Antennaria rosea F. W. Peirson 1930-7-4 8999 San Bernardino Open ridge above Greene Creek Canyon, Sugarloaf Peak. 2591 Comment
  RSA93763  Baileya pleniradiata F. W. Peirson 1930-4-16 8731 San Bernardino Cima road, 8 miles S of the Las Vegas to Baker road Comment
  RSA93779  Lobelia cardinalis subsp. graminea F. W. Peirson 1924-9-2 5204 San Bernardino Marshes on Santa Ana River, about 2 miles south of San Bernardino. Comment
  RSA93814  Chaenactis fremontii F. W. Peirson 1926-4-27 6677 San Bernardino 16 miles W of victorville, Mojave Desert Comment
  RSA93828  Chaenactis carphoclinia var. carphoclinia F. W. Peirson 1922-5-12 2974 San Bernardino Mojave Desert. 10 miles north of Barstow. Comment
  RSA93912  Iva axillaris F. W. Peirson 1930-7-2 8973 San Bernardino North side of Baldwin Lake. 2043 Comment
  RSA94084  Psathyrotes annua F. W. Peirson 1916-07 1427 San Bernardino Victorville. Comment
  RSA94167  Monoptilon bellioides F. W. Peirson 1922-5-14 4741 San Bernardino Half between Barstow and Victorville Comment
  RSA94364  Madia gracilis F. W. Peirson 1919-6-5 508 San Bernardino San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA94489  Arnica chamissonis subsp. foliosa F. W. Peirson 1924-7-5 4895 San Bernardino Bluff Lake 2317 Comment
  RSA94612  Syntrichopappus fremontii F. W. Peirson 1930-4-16 8749 San Bernardino about 10 miles north of Goffs on Cima Road, eastern San Bernardino Co. Comment
  RSA94638  Syntrichopappus fremontii F. W. Peirson 1922-5-12 4243 San Bernardino 22 miles north of Barstow, Comment
  RSA94974  Prenanthella exigua F. W. Peirson 1932-3-24 9829 San Bernardino Near the town of Baker. 280 Comment
  RSA95024  Malacothrix sonchoides F. W. Peirson 1926-4-27 6685 San Bernardino Near Box S Ranch, 18 miles east of Victorville, Mojave Desert. Comment
  RSA95289  Vitis girdiana F. W. Peirson 1924-9-1 5141 San Bernardino Cushenbury Springs, N base of San Bernardino Mountains., Mojave Desert. 1232 Comment
  RSA97120  Cornus sericea subsp. sericea F. W. Peirson 1922-7-5 3186 San Bernardino 1.5 miles east of Big Pines, Swartout Valley (San Gabriel Mts.) 1981 Comment
  RSA97160  Lomatium dissectum var. multifidum F. W. Peirson 1920-5-19 2153 San Bernardino Coldwater Canyon, fork of Lytle Creek, San Gabriel Mountains 1677 Comment
  RSA97297  Garrya veatchii F. W. Peirson 1923-2-27 139 San Bernardino San Antonio Canyon, San Gabriel Mts, Line between Los Angeles and San Bernardino counties. 915 Comment
  RSA97447  Phoradendron pauciflorum F. W. Peirson 1909-08 1718 San Bernardino on Abies concolor; South Fork of Santa Ana River. Comment
  RSA97457  Osmorhiza berteroi F. W. Peirson 1924-7-12 4929 San Bernardino Santa Ana River. 1921 Comment
  SD87557  Caulanthus cooperi Frank W. Peirson 1927-5-7 7284 San Bernardino Several miles east of Kramer. Comment
  CAS-BOT-BC407813  Gilia ochroleuca subsp. exilis F. W. Peirson 1929-5-5 8363 San Diego South slope of divide between Oak Grove and Warner's Hot Springs 914 Comment
  CAS-BOT-BC63208  Ceanothus tomentosus var. olivaceus Frank W. Peirson 1929-3-30 8276 San Diego Grade n. of Pala. 304 Comment
  JEPS17817  Calochortus splendens Frank W. Peirson 1924-6-27 4858 San Diego near Little Lake; Laguna Mts. 1828 Comment
  JEPS4398  Trifolium willdenovii Frank W. Peirson 1925-5-18 5971 San Diego n shore lake; Cyamaca Lake 1706 Comment
  PASA1120  Scutellaria bolanderi Frank W. Peirson 1920-6-25 San Diego Morettis 883 Comment
  PASA1520  Viola douglasii Frank W. Peirson 1925-5-15 San Diego Laguna Lakes Auto Camp, Laguna Mts. 1828 Comment
  PASA1772  Hibiscus denudatus Frank W. Peirson 1928-3-24 San Diego Sentenac Canyon, San Felipe Creek Comment
  PASA1783  Vitis girdiana Frank W. Peirson 1925-5-17 San Diego Vallecito Canyon, Laguna Mts. Comment
  PASA2615  Clematis pauciflora Frank W. Peirson 1925-5-17 5949 San Diego Vallecito Canyon, east slope Laguna Mtns. Comment
  PASA353  Thelypodium cooperi Frank W. Peirson 1928-4-20 San Diego San Felipe Creek at foot of Sentenac Canyon Comment
  PASA813  Lupinus concinnus var. optatus Frank W. Peirson 1929-5-4 San Diego Palomar Mt. east trail 1066 Comment
  POM20562  Solanum umbelliferum F. W. Peirson 1923-3-26 3380 San Diego 0.5 mile north of Encinitas. Comment
  POM87087  Lupinus agardhianus F. W. Peirson 1922-4-14 2908 San Diego Grossmont, 10 miles east of San Diego. Comment
  RSA100258  Plectritis ciliosa subsp. insignis F. W. Peirson 1925-5-15 5907 San Diego Laguna Lakes, Laguna Mountains 1829 Comment
  RSA193457  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1929-3-31 8284 San Diego Foster Grade, east of Julian. Comment
  RSA432490B  Chamaesyce serpillifolia F. W. Peirson 1924-6-22 s.n. San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA499265  Rosa gymnocarpa F. W. Peirson 1924-6-22 s.n. San Diego Doane Valley. 1494 Comment
  RSA614276  Pentachaeta aurea F. W. Peirson 1927-4-19 7235 San Diego Headland south of Torrey Pines, Comment
  RSA65173  Chorizanthe fimbriata var. fimbriata F. W. Peirson 1924-6-21 4763 San Diego Grade north of Pala. 229 Comment
  RSA65347  Atriplex watsonii F. W. Peirson 1923-3-27 3413 San Diego Imperial Beach. Comment
  RSA65588  Arenaria macrophylla F. W. Peirson 1925-5-19 6000 San Diego Middle Peak, Cuyamaca Mts., and along divide to the south. 1616 Comment
  RSA65657  Montia fontana F. W. Peirson 1924-6-22 s.n. San Diego Near head of Doane Valley, Palomar Mts., San Diego Co., California. 1585 Comment
  RSA65685  Lewisia brachycalyx F. W. Peirson 1925-5-18 5990 San Diego Cuyamaca Lake, north of dam 1402 Comment
  RSA66228  Boechera californica F. W. Peirson 1926-5-1 6706 San Diego Along trail from Oak Grove to Palomar Mt. Comment
  RSA66750  Caulanthus cooperi F. W. Peirson 1922-4-13 2865 San Diego Mountain Springs, eastern San Diego. 793 Comment
  RSA66751  Caulanthus heterophyllus F. W. Peirson 1929-5-4 8345 San Diego Trail from Oak Grove to Palomar Mt. Comment
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Feb 12 2009
  RSA68675  Calochortus concolor Frank W. Peirson 1924-6-25 4859 San Diego Public camp, Laguna Lakes region, Laguna Mountains. Comment
  RSA68689  Muilla maritima F. W. Peirson 1925-5-17 5955 San Diego Lower part of Vallecito Canyon. Comment
  RSA68972  Plantago erecta F. W. Peirson 1923-3-27 3378 San Diego About 6 miles north of San Diego. 122 Comment
  RSA69468  Mirabilis multiflora var. pubescens F. W. Peirson 1924-6-26 4879 San Diego Lower part of Vallecito Canyon. 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
  RSA69612  Lilaea scilloides F. W. Peirson 1924-6-24 4830 San Diego South of Cuyamaca Lake. 1433 Comment
  RSA69927  Apocynum pumilum var. rhomboideum F. W. Peirson 1924-6-22 4807 San Diego Doane Valley. 1494 Comment
  RSA69995  Allionia incarnata F. W. Peirson 1924-6-26 4877 San Diego Lower part of Vallecito Canyon. Comment
  RSA70083  Piperia cooperi Frank W. Peirson 1926-4-30 6697 San Diego About 2 miles east from Pala on the road to Henshaw Dam Comment
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Dec 9 2011
  RSA70169  Bloomeria crocea F. W. Peirson 1920-6-24 6 San Diego Morgan Hill, Palomar Mountains. 1433 Comment
  RSA70866  Arctostaphylos pringlei subsp. drupacea F. W. Peirson 1925-5-16 5937 San Diego Monument Peak, Laguna Mts. Comment
  RSA71861  Allophyllum gilioides F. W. Peirson 1925-5-15 5917 San Diego Laguna Lakes, Laguna Mountains 1829 Comment
  RSA71911  Navarretia capillaris F. W. Peirson 1924-6-22 4772 San Diego Near head of Doane Valley, Palomar Mts., San Diego Co., California. 1585 Comment
  RSA73015  Leptosiphon pygmaeus subsp. pygmaeus F. W. Peirson 1925-5-15 5924 San Diego Laguna Lakes, Laguna Mountains 1829 Comment
  RSA73043  Leptosiphon androsaceus F. W. Peirson 1922-4-14 2878 San Diego South slope; Point Loma, San Diego Co., California Comment
  RSA73074  Leptosiphon liniflorus F. W. Peirson 1920-6-25 4712 San Diego Southwest of Warners Springs. Comment
  RSA73676  Leptosiphon floribundus subsp. floribundus F. W. Peirson 1924-6-25 4842 San Diego Laguna Lakes, Laguna Mountains. 1829 Comment
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Feb 3 2012
  RSA73687  Linanthus orcuttii subsp. pacificus F. W. Peirson 1920-6-24 2173 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA74808  Phacelia parryi F. W. Peirson 1930-5-11 8787 San Diego San Luis Rey River. 610 Comment
  RSA74933  Phacelia distans F. W. Peirson 1928-4-20 7859 San Diego 2 miles S of San Felipe Creek, near mouth of Sentenac Canyon, Eastern San Diego County. Comment
  RSA74955  Phacelia curvipes F. W. Peirson 1929-5-4 8354 San Diego Along trail from Oak Grove to Palomar Mt. 1372 Comment
  RSA75131  Nemacladus pinnatifidus F. W. Peirson 1929-5-4 8358 San Diego On trail from Oak Grove to Palomar Mtn. 1067 Comment
  RSA75143  Nemacladus longiflorus var. longiflorus F. W. Peirson 1920-6-24 2184 San Diego East trail up to Palomar Mountain 1707 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
  RSA75878  Nemophila menziesii var. integrifolia F. W. Peirson 1925-5-12 s.n. San Diego Potrero Grade 686 Comment
  RSA76956  Stillingia linearifolia F. W. Peirson 1925-5-20 6009 San Diego About 2 miles north of Oak Grove, San Diego. Comment
  RSA77087  Thamnosma montana F. W. Peirson 1928-3-24 7738 San Diego San Felipe Creek, near foot of Sentenac Canyon, eastern San Diego Co. Comment
  RSA77159  Ceanothus leucodermis F. W. Peirson 1920-6-24 2319 San Diego West slpoe. 1753 Comment
  RSA77223  Fremontodendron californicum F. W. Peirson 1925-5-17 5941 San Diego Lower part of Vallecito Canyon. Comment
  RSA77417  Citrullus lanatus F. W. Peirson 1923-9-10 4047 San Diego 3 mi. from coast at Torrey Pines Comment
  RSA77702  Ceanothus palmeri F. W. Peirson 1920-6-24 4193 San Diego West of summit of Mt. Palomar, [Palomar Mountains]. 1677 Comment
  RSA77868  Pectocarya linearis subsp. ferocula F. W. Peirson 1923-3-27 3359 San Diego Summit of low hill about 6 miles north of San Diego on the inland route to Riverside. 122 Comment
  RSA79590  Cryptantha barbigera F. W. Peirson 1925-5-15 5890 San Diego summit of Mountain Springs Grade, eastern San Diego 1067 Comment
  RSA79826  Keckiella antirrhinoides subsp. microphylla F. W. Peirson 1925-5-17 5952 San Diego Vallecito Canyon, eastern San Diego Co. Comment
  RSA80012  Cryptantha micrantha var. lepida F. W. Peirson 1920-6-24 2167 San Diego Meadow east of Morgan Hill; Palomar Mts 1433 Comment
  RSA80080  Mimulus diffusus F. W. Peirson 1925-5-15 5919 San Diego Laguna Lakes 1677 Comment
  RSA80171  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
  RSA80176  Antirrhinum nuttallianum subsp. nuttallianum F. W. Peirson 1929-5-4 8346 San Diego On trail from Oak Grove to Palomar Mtn. 1067 Comment
  RSA80307  Orthocarpus densiflorus var. gracilis F. W. Peirson 1923-3-27 3372 San Diego Otay Creek. 30 Comment
  RSA80319  Orthocarpus densiflorus var. gracilis F. W. Peirson 1927-4-19 7247 San Diego Headland South of Torrey Pines Comment
  RSA80642  Boisduvalia densiflora F. W. Peirson 1920-6-25 2194 San Diego Moretti s south of Warner s Hot Springs. 884 Comment
  RSA80728  Nicotiana obtusifolia F. W. Peirson 1928-3-24 7742 San Diego San Felipe Creek, ca 2 miles below Sentenac Canyon, western Colorado Desert. Comment
  RSA82052  Cordylanthus rigidus subsp. setiger F. W. Peirson 1932-9-4 10464 San Diego 7 miles west of Campo. 671 Comment
  RSA82106  Mimulus aurantiacus var. puniceus F. W. Peirson 1922-4-14 1147 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  RSA82235  Castilleja affinis F. W. Peirson 1927-4-19 7249 San Diego Headland South of Torrey Pines Comment
  RSA82567  Stachys rigida subsp. quercetorum F. W. Peirson 1927-4-19 7236 San Diego Headland south of Torrey Pines, Comment
  RSA83419  Dudleya saxosa subsp. aloides F. W. Peirson 1924-6-23 4813 San Diego N slope of Doane Valley, Palomar Mts. 1524 Comment
  RSA84267  Ranunculus aquatilis var. capillaceus F. W. Peirson 1924-6-27 4864 San Diego ponds at Laguna Lakes 1524 Comment
  RSA84470  Clematis pauciflora F. W. Peirson 1927-4-17 s.n. San Diego South of boulevard at summit of Mountain Springs Grade, eastern San Diego. Comment
  RSA84471  Clematis pauciflora F. W. Peirson 1925-5-17 s.n. San Diego Lower Vallecito Canyon, east base of Laguna Mountains. 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
  RSA85234  Horkelia clevelandii F. W. Peirson 1924-6-22 4780 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA85928  Marsilea vestita F. W. Peirson 1925-5-18 5968 San Diego North shore of Cyamaca Lake 1402 Comment
  RSA85950  Pentagramma triangularis subsp. viscosa F. W. Peirson 1922-4-14 2888 San Diego Torrey Pines Park, near La Jolla. Comment
  RSA86791  Rosa gymnocarpa F. W. Peirson 1924-6-22 4806 San Diego Doane Valley. 1494 Comment
  RSA86817  Amelanchier utahensis F. W. Peirson 1925-5-17 5943 San Diego Upper portion of trail to Vallecito Canyon, Laguna Mountains. Comment
  RSA87088  Lupinus concinnus subsp. concinnus F. W. Peirson 1923-3-27 3403 San Diego Summit of low hill about 6 miles north of San Diego on the inland route to Riverside. 122 Comment
  RSA87350  Galium andrewsii F. W. Peirson 1920-6-24 4499 San Diego On east trail to Palomar Mtn. 1524 Comment
  RSA88850  Carex subfusca F. W. Peirson 1925-5-18 5975 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains 1402 Comment
  SD136473  Sanicula tuberosa F. W. Peirson 1925-5-18 5964 San Diego Cuyamaca Lake, Cuyamaca Mountains 1399 Comment
  SD87541  Leptosiphon parviflorus F. W. Peirson 1923-3-27 3390 San Diego Imperial Beach, low slope about saline flat Comment
  SD87699  Erigeron divergens F. W. Peirson 1923-3-27 3365 San Diego Otay Creek; 2 miles below Otay Dam Comment
  SD87700  Galium andrewsii subsp. andrewsii F. W. Peirson 1920-6-24 San Diego Palomar, East Trail (IPB 9/06) 1520 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
  UC634887  Dichondra occidentalis Frank W. Peirson 1927-4-19 7250 San Diego headland s Torrey Pines Comment
  UC635464  Lewisia brachycalyx Frank W. Peirson 1925-5-18 5990 San Diego in field near w end of Cuyamaca Lake Cuyamaca Lake 1402 Comment
  UCR136644  Rhamnus californica subsp. tomentella F. W. Peirson 1924-6-22 4796 San Diego Peninsular Ranges; Palomar Mountains, Mt. Palomar, near country club, at the top of grade 1616 Comment
  POM9920  Petunia parviflora F. W. Peirson 1920-6-25 2207 San Diego San Luis Rey. 915 Comment
  RSA0028102  Mirabilis multiflora var. pubescens F. W. Peirson 1920-6-22 1851 San Diego Oak Grove, Palomar Region 854 Comment
  RSA0029903  Delphinium parishii subsp. subglobosum F. W. Peirson 1928-3-24 7740 San Diego San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA0059174  Orobanche californica subsp. feudgei Frank W. Peirson 1920-6-24 2746 San Diego East trail to Palomar Mt. 1676 Comment
  RSA0075945  Heterotheca sessiliflora F. W. Peirson 1923-3-27 3368 San Diego Along back side of low sand dunes, Imperial Beach. Comment
  RSA0117319  Collinsia parviflora F. W. Peirson 1925-5-15 5927 San Diego Laguna Lakes, Laguna Mts 1524 Comment
  RSA0121504  Carex hassei F. W. Peirson 1924-6-22 4781 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA0121761  Vitis girdiana F. W. Peirson 1925-5-17 5944 San Diego In lower Vallecito Canyon, east base of Laguna Mts. Comment
  RSA0122047  Eriastrum sapphirinum subsp. dasyanthum F. W. Peirson 1915-7-1 4473 San Diego Pala, San Diego County, California. 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
  RSA90989  Trifolium wormskioldii F. W. Peirson 1925-5-19 6004 San Diego San Luis Ray River. 915 Comment
  RSA91245  Vicia americana F. W. Peirson 1925-5-15 5910 San Diego Laguna Lakes, Laguna Mts., slightly North of public camp Comment
  RSA91427  Marina parryi F. W. Peirson 1928-7-24 7744 San Diego San Felipe Creek about 2 miles below Sentenac Canyon, eastern San Diego County Comment
  RSA91436  Psorothamnus schottii F. W. Peirson 1928-4-20 7861 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA91540  Medicago lupulina F. W. Peirson 1925-5-18 5987 San Diego North shore of Cyamaca Lake 1402 Comment
  RSA92129  Eleocharis palustris F. W. Peirson 1925-5-19 6006 San Diego About 4 miles northwest of Warners Hots Spring on the San Luis Rey River 915 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
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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
  RSA93034  Grindelia hirsutula var. hallii F. W. Peirson 1932-9-4 10472 San Diego Cuyamaca Lake 1433 Comment
  RSA93247  Chrysothamnus paniculatus F. W. Peirson 1938-11-12 12638 San Diego San Felipe Canyon just above the Narrows, eastern San Diego County Comment
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Jan 30 2009
  RSA93331  Downingia cuspidata F. W. Peirson 1923-3-28 3394 San Diego Mesa about 6 miles North of San Diego. 122 Comment
  RSA94127  Hulsea vestita subsp. callicarpha F. W. Peirson 1924-6-22 4796 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA94143  Hulsea vestita subsp. callicarpha F. W. Peirson 1920-6-24 2202 San Diego On east trail to Palomar Mtn. 1524 Comment
  RSA94386  Dyssodia porophylloides F. W. Peirson 1925-5-15 5889 San Diego summit of Mountain Springs Grade, eastern San Diego 1067 Comment
  RSA94839  Senecio aphanactis F. W. Peirson 1951-1 3358 San Diego 6 miles north of San Diuego on Escondido Road Comment
  RSA95113  Agoseris grandiflora var. grandiflora F. W. Peirson 1924-6-25 4856 San Diego Laguna Mountains: Meadow near Laguna Lakes. Comment
  RSA97272  Cornus occidentalis F. W. Peirson 1934-6-22 4786 San Diego Palomar Mt. 1524 Comment
  CAS-BOT-BC299360  Deinandra increscens subsp. increscens Frank W. Peirson 1920-7-31 2233 San Luis Obispo Morro Bay Comment
  POM175514  Malacothrix incana F. W. Peirson 1920-7-29 2225 San Luis Obispo 1 mile south of Pismo Beach. Comment
  RSA68726  Fritillaria affinis Frank W. Peirson 1925-3-25 5691 San Luis Obispo Pismo Creek. 30 Comment
  SD87647  Eriastrum densifolium subsp. densifolium Frank Peirson 1920-7-29 2224 San Luis Obispo 1.0 mile south of Pismo. Comment
  RSA66113  Cardamine californica var. integrifolia F. W. Peirson 1925-3-24 5662 San Luis Obispo Morro Creek Divide. 427 Comment
  RSA67373  Stanfordia californica F. W. Peirson 1938-4-12 12387 San Luis Obispo Extreme southeast corner of San Luis Obispo Co. (Cuyama Valley) Comment
  RSA84954  Ribes divaricatum F. W. Peirson 1925-3-25 5682 San Luis Obispo North of Morro Comment
  RSA85946  Aphanes occidentalis F. W. Peirson 1925-3-24 5660 San Luis Obispo Morro Creek Divide. 427 Comment
  RSA91032  Erigeron blochmaniae F. W. Peirson 1932-7-4 10241 San Luis Obispo Oceano Comment
  RSA91325  Lupinus arboreus var. arboreus F. W. Peirson 1925-3-25 5683 San Luis Obispo Morro. Comment
  RSA91400  Trifolium depauperatum var. amplectens F. W. Peirson 1925-3-25 5668 San Luis Obispo On Morro Creek Divide. 427 Comment
  RSA92701  Salix laevigata F. W. Peirson 1925-3-25 5681 San Luis Obispo Morro. Comment
  RSA97265  Lomatium caruifolium F. W. Peirson 1925-3-25 5685 San Luis Obispo Between Morro and San Luis Obispo Comment
  SD87703  Malacothrix incana F. W. Peirson 1920-7-29 2225 San Luis Obispo Pismo Comment
  RSA65493  Spergula arvensis Mabel Peirson 1926-2-24 6520 San Mateo Moss Beach. Comment
  RSA91713  Gnaphalium ramosissimum F. W. Peirson 1925-9-13 6426 San Mateo Rockaway beach Comment
  CAS-BOT-BC322521  Malacothrix incana Frank W. Peirson 1929-4-20 8311 Santa Barbara Surf, sea level Comment
  CAS-BOT-BC346763  Lasthenia californica Mabel B. Peirson 1927-4-14 7145 Santa Barbara Santa Barbara, terrace 100 ft. above the sea; Prisoners Cove, Santa Cruz Island 30 Comment
  JEPS53395  Cardamine californica var. integrifolia Mabel Peirson Apr 12 1927-Apr 14 1927 Santa Barbara Lady's Harbor , Lady's Harbor (Santa Cruz Island) Comment
  JEPS66595  Comarostaphylis diversifolia subsp. planifolia Mabel Peirson Apr 12 1927-Apr 14 1927 Santa Barbara Santa Cruz Island Lady's Harbor; , Lady's Harbor Comment
  PASA1209  Alchemilla arvensis Mabel B. Peirson 1927-4-14 Santa Barbara Prisoners' Cove, Santa Cruz Island Comment
  POM128753  Lotus dendroideus var. dendroideus Mabel Peirson 1927-4-12 7123 Santa Barbara Santa Cruz Island. Lady's Harbor. 152 Comment
  POM175144  Camissonia cheiranthifolia subsp. cheiranthifolia F. W. Peirson 1929-4-20 8308 Santa Barbara Sand dunes, Surf. Comment
  RSA498853  Lotus scoparius F. W. Peirson 1929-5-17 8369 Santa Barbara Seaward face of sand dunes, flat ground near railroad track, Surf. Comment
  RSA65188  Chorizanthe angustifolia F. W. Peirson 1929-4-20 8310 Santa Barbara Surf Comment
  RSA65227  Eriogonum arborescens F. W. Peirson 1934-3-28 11080 Santa Barbara Santa Cruz Island. Diablo Canyon, about 1 mile west of Frye's Harbor Comment
  RSA68758  Delphinium patens subsp. hepaticoideum F. W. Peirson 1925-3-26 5712 Santa Barbara Side canyon at Gaviota Pass. 183 Comment
  RSA69392  Thalictrum polycarpum F. W. Peirson 1929-4-20 8288 Santa Barbara El Capitan Auto Camp, Northwest of Santa Barbara County. Comment
  RSA70842  Arctostaphylos insularis F. W. Peirson 1934-3-25 11041 Santa Barbara Santa Cruz Island. Summit of ridge west of Fry's Harbor. 182 Comment
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Jan 13 2015
  RSA80241  Orthocarpus densiflorus F. W. Peirson 1934-3-26 11098 Santa Barbara Santa Cruz Island. Open headland Prisoners Cove Comment
  RSA80740  Cryptantha leiocarpa F. W. Peirson 1929-5-17 8370 Santa Barbara Seaward face of sand dunes, flat ground near railroad track, Surf. 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
  RSA85023  Polystichum munitum F. W. Peirson 1934-3-28 11083 Santa Barbara in Diablo canyon, Frye's Harbor, Santa Cruz Island. Comment
  RSA86865  Prunus lyonii F. W. Peirson 1934-3-25 11028 Santa Barbara Santa Cruz Island. West of canyon at Frye's Harbor, Comment
  RSA87341  Muhlenbergia microsperma F. W. Peirson 1934-3-26 11060 Santa Barbara Santa Cruz Island. Frye's Harbor. Comment
  SD87818  Amsinckia spectabilis var. microcarpa Frank W. Peirson 1929-4-20 8299 Santa Barbara La Purissima Mission Comment
  UC501600  Thysanocarpus laciniatus Mabel B. Peirson 1927-4-12 7138 Santa Barbara Santa Cruz Island , Lady's Harbor (Lady's Harbor) Comment
  UC599193  Cryptantha leiocarpa Frank W. Peirson 1938-4-13 Santa Barbara Surf Comment
  UCD102438  Ribes thacherianum Frank W. Peirson 1934-3-28 s.n. Santa Barbara Santa Cruz Island, Diablo Canyon, about mile west of Fry's Harbor. Comment
  UCR136643  Agrostis viridis F. W. Peirson 1929-4-20 8292 Santa Barbara Central Coast, El Capitan Auto Camp 3 Comment
  PASA1107  Lotus salsuginosus Frank W. Peirson 1925-3-27 Santa Barbara Hills back of Santa Barbara 152 Comment
  PASA909  Agoseris heterophylla subsp. californica Frank W. Peirson 1925-3-26 Santa Barbara Road from Lompoc to Buelton 152 Comment
  POM128754  Cheilanthes clevelandii Mabel Peirson 1927-4-12 7139 Santa Barbara Lady's Harbor, Santa Cruz Island Comment
  RSA0059185  Orobanche uniflora subsp. occidentalis Frank W. Peirson 1934-3-29 11088 Santa Barbara Banks of Frye's Inlet, Santa Cruz Island. Comment
  RSA458864  Clarkia bottae F. W. Peirson 1929-5-18 8394 Santa Barbara Cuyama Valley Road, 13 miles east of Coast Boulevard. Comment
  RSA73304  Clarkia bottae F. W. Peirson 1929-5-18 8394 Santa Barbara Cuyama Valley Road, 13 miles east of Coast Boulevard. Comment
  RSA74488  Phacelia grandiflora F. W. Peirson 1925-3-27 5722 Santa Barbara hills back of Santa Barbara 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
  RSA83932  Ranunculus californicus F. W. Peirson 1925-4-20 8318 Santa Barbara 2 miles from Surf on road to Lompoc Comment
  RSA84911  Crassula connata var. erectoides F. W. Peirson 1934-3-25 11024 Santa Barbara West of canyon to Frye's Harbor, Santa Cruz Island. 61 Comment
  RSA84990  Ruppia cirrhosa F. W. Peirson 1920-7-28 2836 Santa Barbara Canada del Refugio, at sea level. 0 Comment
  RSA85551  Cheilanthes clevelandii F. W. Peirson 1934-3-25 11036 Santa Barbara Ridge west of canyon at Frye's Harbor, Santa Cruz Island. 244 Comment
  RSA85556  Cheilanthes clevelandii Mabel Peirson 1927-4-12 7139 Santa Barbara Lady's Harbor, Santa Cruz Island. 152 Comment
  RSA90378  Lotus strigosus F. W. Peirson 1934-3-25 11027 Santa Barbara West of canyon to Frye's Harbor, Santa Cruz Island. 61 Comment
  RSA91133  Trifolium microcephalum F. W. Peirson 1934-3-25 11023 Santa Barbara West of canyon to Frye's Harbor, Santa Cruz Island. 61 Comment
  RSA92201  Jaumea carnosa F. W. Peirson 1920-7-28 1364 Santa Barbara Canada del Refugio. 0 Comment
  RSA92476  Coreopsis gigantea F. W. Peirson 1929-4-20 8322 Santa Barbara Surf. Comment
  RSA92510  Eriophyllum multicaule F. W. Peirson 1929-5-17 8381 Santa Barbara Grade beyond Bear Creek, 2 miles south of Surf. Comment
  RSA92535  Eriophyllum staechadifolium var. depressum F. W. Peirson 1934-3-28 11079 Santa Barbara Santa Cruz Island. Diablo Canyon, about 1 mile west of Frye's Harbor Comment
  RSA92685  Eriophyllum confertiflorum F. W. Peirson 1925-3-26 5700 Santa Barbara Cebada Canyon. 183 Comment
  RSA93862  Encelia californica F. W. Peirson 1925-3-27 5718 Santa Barbara hills back of Santa Barbara 152 Comment
  RSA94061  Hemizonia increscens F. W. Peirson 1929-5-17 8372 Santa Barbara On sand dunes at Surf. Comment
  RSA94531  Artemisia californica F. W. Peirson 1925-3-26 5717 Santa Barbara At sea level, El Capitan Auto Camp on coast northwest of Santa Barbara. 0 Comment
  POM47638  Viola ocellata F. W. Peirson 1923-6-28 3781 Santa Cruz West slope of Santa Cruz Mts. Comment
  RSA66488  Eschscholzia californica subsp. californica F. W. Peirson 1912-6-28 1887 Santa Cruz Santa Cruz. Comment
  RSA70236  Allium unifolium F. W. Peirson 1912-6-30 1655 Santa Cruz Santa Cruz Mountains. Comment
  RSA73121  Navarretia squarrosa F. W. Peirson 1912-6-30 931 Santa Cruz Santa Cruz Mountains. Comment
  RSA87016  Alnus rubra F. W. Peirson 1912-6-28 1706 Santa Cruz Santa Cruz Mts. Comment
  POM20550  Navarretia squarrosa F. W. Peirson 1923-6-28 3810 Santa Cruz 5 miles south of Watsonville Comment
  RSA69527  Clintonia andrewsiana Frank W. Peirson 1912-6-29 1671 Santa Cruz State Park, Santa Cruz. Comment
  RSA71935  Collomia heterophylla F. W. Peirson 1912-07 912 Santa Cruz Redwood State Park Comment
  RSA92848  Madia capitata F. W. Peirson 1925-8-4 6328 Santa Cruz San Lorenzo River about 1 mile from Boulder. Comment
  RSA93208  Baccharis douglasii F. W. Peirson 1925-8-4 6327 Santa Cruz Roadside near San Lorenzo River, about 1 mile from Boulder Comment
  CAS-BOT-BC149666  Spiraea douglasii Frank W. Peirson 1932-7-14 10162 Shasta Lake Basin 1950 Comment
  JEPS71067  Collomia tinctoria Frank W. Peirson 1932-7-12 10200 Shasta s Burney (on rim of Red Crater); 1000 Lake Basin 2072 Comment
  LA96460  Mimulus nanus var. mephiticus Frank W. Peirson; 1932-7-12 10212 Shasta 1000 Lake Basin 2011 Comment
  RSA66098  Cardamine bellidifolia var. pachyphylla F. W. Peirson 1935-7-15 10155 Shasta Mt. Magee, Thousand Lake Basin. 2363 Comment
  RSA70573  Vaccinium F. W. Peirson 1932-7-14 10196 Shasta Thousand-Lake Basin. 1951 Comment
  RSA766344  Eriogonum marifolium F. W. Peirson 1932-7-13 10140 Shasta 1000-Lake Basin. 1951 Comment
  RSA85250  Spiraea densiflora F. W. Peirson 1932-7-10 10162 -a Shasta Along stream, Thousand- Lake Basin Comment
  RSA86698  Festuca idahoensis F. W. Peirson 1932-7-9 10268 Shasta Burney Spring. 1433 Comment
  UC483081  Salix lemmonii Frank W. Peirson 1932-7-12 10132 b Shasta 1000-Lake slope of Red Crater Comment
  UC501465  Collomia tinctoria Frank W. Peirson 1932-7-12 10200 Shasta on rim Red Crater (s of Burney); 1000-Lake Basin 2072 Comment
  UC501472  Epilobium hallianum Frank W. Peirson 1932-7-14 10187 Shasta w Lake Eiler (s of Burney); 1000-Lake Basin 1950 Comment
  UC501483  Polygala cornuta var. cornuta Frank W. Peirson 1932-7-17 10331 Shasta Wallace Ranch Goose Valley 914 Comment
  UC501512  Sidalcea oregana subsp. spicata Frank W. Peirson 1932-7-9 10273 Shasta Burney Spring 1432 Comment
  UC501532  Arenaria congesta var. congesta Frank W. Peirson 1932-7-11 10145 Shasta s Burney (1000- Lake Basin); Lake Basin 1950 Comment
  UC501559  Deschampsia cespitosa subsp. cespitosa Frank W. Peirson 1932-7-12 10106 Shasta 1000-Lake Basin s. of Burney (along shore of Lake Eiler); 1000-Lake Basin, Lake Eiler 1950 Comment
  UC501577  Trifolium kingii var. productum Frank W. Peirson 1932-7-13 10177 Shasta s Burney (1000-Lake Basin) 1950 Comment
  UC501606  Rhamnus rubra Frank W. Peirson 1932-7-13 10179 Shasta s of Burney; 1000-Lake Basin 1950 Comment
  UCD85951  Koeleria macrantha F. W. Peirson 1932-7-9 10266 Shasta Burney Spring. 1432 Comment
  CAS-BOT-BC230832  Trifolium productum Frank W. Peirson 1932-7-10 10177 Shasta 1000-Lake Basin 1950 Comment
  CAS-BOT-BC314804  Helianthella californica var. nevadensis Frank W. Peirson 1932-7-16 10301 Shasta Trail to 1000 Lake Basin 1524 Comment
  CAS-BOT-BC343413  Madia gracilis Frank W. Peirson 1932-7-9 10297 Shasta Burney Spring 1430 Comment
  CAS-BOT-BC60757  Physaria occidentalis Frank W. Peirson 1926-6-23 6837 Shasta Trail to summit of Lassen Peak. Upper part of trail. Comment
  CAS-BOT-BC97569  Symphyotrichum ascendens Frank W. Peirson 1932-7-12 10230 Shasta 1000-Lake Basin, along shore of Lake Eiler 1950 Comment
  POM203542  Hesperolinon micranthum F. W. Peirson 1932-7-16 s.n. Shasta Burney Spring 1433 Comment
  POM98583  Cordylanthus tenuis subsp. viscidus F. W. Peirson 1926-6-22 6807 Shasta Lassen National Park, in vicinity of Boiling Lake Comment
  RSA65858  Polygonum minimum F. W. Peirson 1932-7-14 10138 Shasta Thousand Lake Basin. 1951 Comment
  RSA65905  Eriogonum ursinum F. W. Peirson 1926-6-22 6806 Shasta sandy stream-bottom lands, 2 or 3 mil below end of road, but still in National Park. Drakesbad Region, Lassen National Park. Comment
  RSA68719  Fritillaria atropurpurea Frank W. Peirson 10125 Shasta Thousand-Lake Basin 1951 Comment
  RSA70253  Allium obtusum var. obtusum F. W. Peirson 1926-6-23 6839 Shasta Lassen National Park. Central to upper portion of trail to summit of Lassen Peak. Comment
  RSA72141  Gayophytum heterozygum F. W. Peirson 1932-7-18 10342 Shasta Rocky Camp on Hat Creek 1159 Comment
  RSA72146  Gayophytum heterozygum F. W. Peirson 1932-7-16 10409 Shasta Lake Eiler, Thousand-Lake Basin 1951 Comment
  RSA72151  Gayophytum humile F. W. Peirson 1932-7-14 10188 Shasta Thousand-Lake Basin. 1951 Comment
  RSA73355  Clarkia rhomboidea F. W. Peirson 1932-7-9 10281 Shasta Burney Spring. 1433 Comment
  RSA74490  Phacelia mutabilis F. W. Peirson 1932-7-9 10291 Shasta Burney Spring. 1433 Comment
  RSA77828  Hackelia californica F. W. Peirson 1932-7-11 10206 Shasta West of Lake Eiler, Thousand-Lake Basin. 1951 Comment
  RSA78645  Chimaphila menziesii F. W. Peirson 1932-7-14 13547 Shasta 1000-Lake Basin 1951 Comment
  RSA80081  Mimulus breweri F. W. Peirson 1932-7-13 10213 Shasta Thousand-Lake Basin 1951 Comment
  RSA86659  Sanguisorba annua F. W. Peirson 1932-7-9 10276 Shasta Below Burney Spring. 1433 Comment
  RSA87322  Galium aparine var. echinospermum F. W. Peirson 1932-7-9 10299 Shasta Burney Spring. 1433 Comment
  RSA87418  Lupinus polyphyllus subsp. polyphyllus F. W. Peirson 1932-7-17 10324 Shasta Wallace Ranch, Goose Valley. Comment
  RSA91575  Trifolium productum F. W. Peirson 1932-7-13 10177 Shasta Thousand Lake Basin Comment
  RSA91734  Achnatherum occidentale subsp. californicum F. W. Peirson 1932-7-13 10104 Shasta Thousand-Lake Basin 1982 Comment
  RSA91849  Danthonia californica var. americana F. W. Peirson 1932-7-14 10107 Shasta in Big Meadow south of Lake Eiler, Thousand-Lake Basin 1951 Comment
  RSA92236  Madia minima F. W. Peirson 1932-7-9 10298 Shasta Burney Spring. 1433 Comment
  RSA93186  Erigeron inornatus var. inornatus F. W. Peirson 1932-7-17 10336 Shasta Wallace Ranch, Goose Valley. 915 Comment
  RSA95256  Sidalcea oregana subsp. spicata F. W. Peirson 1932-7-9 10273 Shasta Below Burney Spring 1433 Comment
  RSA72122  Epilobium lactiflorum F. W. Peirson 1921-8-9 2523 Sierra South Fork of San Joaquin River 2515 Comment
  RSA78542  Carex exserta F. W. Peirson 1935-7-18 13598 Sierra Slate Creek. Comment
  RSA143714  Astragalus lentiginosus var. salinus F. W. Peirson 1923-7-19 3602 Siskiyou Near Bray. Comment
  SD87884  Lupinus argenteus F. W. Peirson 1923-7-19 3609 Siskiyou Laird's Landing Comment
  RSA66832  Thelypodium laciniatum F. W. Peirson 1923-7-19 3734 Siskiyou Laird s Landing. Comment
  RSA80775  Nicotiana attenuata F. W. Peirson 1923-7-19 3837 Siskiyou 20 miles north of Bray. Comment
  RSA94943  Tetradymia canescens F. W. Peirson 1923-7-19 3928 Siskiyou Whitney Creek, Mt. Shasta. Comment
  SD87682  Phragmites australis subsp. americanus Frank W. Peirson 1925-9-26 6438 Solano Suisun Marshes, shallow water Comment
  RSA93747  Aster subulatus var. ligulatus F. W. Peirson 1925-9-26 6444 Solano Suisun Marshes Comment
  UCR66595  Navarretia cotulifolia F. W. Peirson 1925-8-8 6339 Sonoma 6 mi south of Santa Rosa 38 Comment
  POM89154  Trifolium fucatum F. W. Peirson 1926-4-1 6551 Sonoma 6 miles south of Cloverdale. Comment
  RSA80275  Orthocarpus lithospermoides F. W. Peirson, Mabel B. Peirson 1926-4-1 6550 Sonoma 6 miles south of Cloverdale. Comment
  RSA90940  Trifolium fucatum F. W. Peirson, Mabel B. Peirson 1926-4-1 6551 Sonoma 6 miles south of Cloverdale. Comment
  RSA97148  Lomatium caruifolium F. W. Peirson, Mabel Peirson 1926-4-1 6548 Sonoma 6 miles south of Cloverdale Comment
  CAS-BOT-BC431110  Lithophragma bolanderi Frank W. Peirson 1925-3-21 5570 Tulare Lewis Creek, near Lindsay 213 Comment
  JEPS19458  Lotus micranthus Frank W. Peirson 1925-3-22 5628 Tulare Middle Fork Tule River 609 Comment
  JEPS33793  Hesperevax acaulis var. robustior F. W. Peirson 1925-3-21 5592 Tulare Lewis Creek near Lindsay; Lewis Creek 289 Comment
  JEPS5741  Androsace septentrionalis subsp. subumbellata Frank W. Peirson 1919-8-8 856 Tulare Twin Lake Cirque Mount Whitney region, Twin Lake Cirque 3505 Comment
  JEPS679  Limnanthes montana Frank W. Peirson 1925-3-22 5629 Tulare Middle Fork Tule River 609 Comment
  JEPS9047  Mimulus geniculatus Frank W. Peirson 1925-3-21 5561 Tulare near Lindsay; Lewis Creek 213 Comment
  RSA69501  Luzula comosa F. W. Peirson 1916-8-25 1648 Tulare Silver Lake, Little Kern River tributary, Sierra Nevada. 3201 Comment
  RSA69618  Triglochin palustris F. W. Peirson 1919-8-12 1541 Tulare Rattlesnake Creek, tributary of Kern River 2744 Comment
Read comments
Mar 1 2011
  RSA70230  Allium validum F. W. Peirson 1908-7-24 1654 Tulare South Fork of Kaweah River. Comment
  RSA70602  Iris munzii Frank W. Peirson 1925-3-22 5620 Tulare Middle Fork of Tule River, west base of Sierra Nevada 610 Comment
  RSA76002  Nemophila spatulata F. W. Peirson 1911-8-9 980 Tulare Whitney Meadows, Sierra Nevada. 2973 Comment
  RSA76975  Aesculus californica F. W. Peirson 1908-7-10 2051 Tulare Tule River, Sierra Nevada. Comment
  RSA77757  Viola lobata F. W. Peirson 1936-5-30 11823 Tulare Balch Park, Sierra Nevada. 1921 Comment
  RSA79445  Collinsia bartsiifolia var. bartsiifolia F. W. Peirson 1925-3-20 5551 Tulare 4 miles south of Porterville. Comment
  RSA79935  Cryptantha nubigena F. W. Peirson 1916-8-20 1032 Tulare Kaweah Peaks. 3659 Comment
  RSA80348  Oreonana clementis F. W. Peirson 1908-7-15 803 Tulare Rock Creek, S of Mt. Whitney, Sierra Nevada. 3354 Comment
  RSA86809  Sorbus aucuparia F. W. Peirson 1908-7-21 1990 Tulare Coyote Creek, Sierra Nevada. Comment
  UC907949  Linanthus filipes Frank W. Peirson 1925-3-21 5571 Tulare near Lindsay; 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
  UCR17978  Trifolium albopurpureum F. W. Peirson 1925-3-20 s.n. Tulare San Joaquin Valley, near Ducor 168 Comment
  CAS-BOT-BC515673  Prosartes hookeri Frank W. Peirson 1936-5-30 11824 Tulare Balch Park 1920 Comment
  RSA0039342  Thysanocarpus curvipes var. curvipes Frank W. Peirson 1925-3-21 5591 Tulare Slope on Lewis Creek near Lindsay. 289 Comment
  RSA0076351  Sedum lanceolatum F. W. Peirson 1919-8-8 1930 Tulare Twin Lake Cirque, Sierra Nevada. 3506 Comment
  RSA100255  Plectritis ciliosa subsp. insignis F. W. Peirson 1925-3-22 5614 Tulare Middle Fork of Tule River, Sierra Nevada. 457 Comment
  RSA65590  Moehringia macrophylla F. W. Peirson 1908-7-23 629 Tulare North Fork of Tule River, Sierra Nevada. Comment
  RSA65706  Silene californica F. W. Peirson 608 Tulare Tule River, Sierra Nevada. Comment
  RSA65866  Polygonum douglasii F. W. Peirson 1910-7-30 1801 Tulare Table Lake Region, Sierra Nevada Comment
  RSA66193  Meconella californica F. W. Peirson 1925-3-21 5594 Tulare Lewis Creek near Lindsay. 290 Comment
  RSA66838  Streptanthus diversifolius F. W. Peirson 1908-7-10 671 Tulare Tule River, Sierra Nevada. Comment
  RSA69254  Pleuricospora fimbriolata F. W. Peirson 1919-8-15 840 Tulare Giant Forest, Sierra Nevada. 1829 Comment
  RSA70129  Brodiaea coronaria F. W. Peirson 1908-7-10 1660 Tulare Tule River. Comment
  RSA70135  Triteleia laxa F. W. Peirson 1925-3-21 5578 Tulare Lewis Creek, near Lindsay. 213 Comment
  RSA70215  Allium hyalinum F. W. Peirson 1925-3-21 5555 Tulare Lewis Creek, near Lindsay. 213 Comment
  RSA73000  Leptosiphon filipes F. W. Peirson 1925-3-21 5571 Tulare Lewis Creek near Lindsay. 213 Comment
  RSA77732  Viola purpurea subsp. purpurea F. W. Peirson 1925-3-22 5625 Tulare Middle Fork of Tule River, Sierra Nevada. 610 Comment
  RSA79819  Keckiella breviflora F. W. Peirson 1919-8-15 1110 Tulare Trail to Giant Forest by 7-mile Hill, Sierra Nevada. 2134 Comment
  RSA80086  Mimulus floribundus F. W. Peirson 1919-8-12 1144 Tulare Rattlesnake Creek tributary to Kern River. 2744 Comment
  RSA80098  Mimulus constrictus F. W. Peirson 1908-7-10 1142 Tulare Tulare River between the Forks and Nelson. Comment
  RSA80405  Mimulus whitneyi F. W. Peirson 1908-7-24 1139 -a Tulare North Fork of Tule River, Sierra Nevada. Comment
  RSA80454  Plagiobothrys nothofulvus F. W. Peirson 1925-3-21 5580 Tulare Lewis Creek, near Lindsay. 213 Comment
  RSA84379  Lithophragma bolanderi F. W. Peirson 1911-8-4 684 Tulare Rattlesnake Canyon. Sierra Nevada. Comment
Read comments
Jan 30 2016
  RSA86990  Cercis occidentalis F. W. Peirson 1925-3-22 5618 Tulare Middle Fork of Tule River, west base of Sierra Nevada. 457 Comment
  RSA90951  Trifolium wormskioldii F. W. Peirson 1908-7-10 558 Tulare Tule River, Sierra Nevada. Comment
  RSA91309  Vicia americana var. americana F. W. Peirson 1908-7-10 2014 Tulare Tule River, Sierra Nevada. Comment
  RSA91488  Eriophorum crinigerum F. W. Peirson 1916-8-25 1615 Tulare Silver Lake, Little Kern River tributary, Sierra Nevada. 3201 Comment
  RSA91528  Trifolium willdenovii F. W. Peirson 1925-3-20 5548 Tulare Roadside between Ducor and Terrabella Comment
  RSA91665  Trisetum spicatum F. W. Peirson 1916-8-25 1602 Tulare Silver Lake, Little Kern tributary. 3201 Comment
  RSA92332  Poa secunda F. W. Peirson 1919-8-8 1561 Tulare Twin Lake Cirque, Mt. Whitney region, Sierra Nevada 3506 Comment
  RSA93395  Cephalanthus occidentalis F. W. Peirson 1908-7-10 1193 Tulare Tulare River between the Forks and Nelson. Comment
  RSA93673  Antennaria media F. W. Peirson 1916-8-25 1308 Tulare Silver Lake, Little Kern River tributary, Sierra Nevada. 3201 Comment
  RSA93846  Aster alpigenus F. W. Peirson 1919-8-8 1276 -a Tulare Twin Lake Cirque, Mt. Whitney region, Sierra Nevada. 3506 Comment
  RSA93868  Dugaldia hoopesii F. W. Peirson 1908-7-13 1410 Tulare Volcano Creek, Sierra Nevada. Comment
  RSA95233  Stephanomeria tenuifolia F. W. Peirson 1919-8-8 1473 Tulare Above Crabtree Meadow, near Mt Whitney. 3354 Comment
  PASA164  Pedicularis attollens Frank W. Peirson 1930-8-14 Tuolumne Tuolumne meadows 2590 Comment
  POM146795  Carex helleri F. W. Peirson 1927-8-3 7631 Tuolumne west slope of Mt. Dana, Sierra Nevada. 3659 Comment
  RSA66326  Polygonum phytolaccifolium F. W. Peirson 1910-8-2 1787 Tuolumne Tamarack Flat, Yosemite National Park. Comment
Read comments
Jul 4 2012
  RSA67164  Galium trifidum var. pusillum F. W. Peirson 1930-8-14 9215 Tuolumne Tuolumne Meadows. Sierra Nevada. 2591 Comment
  RSA0016778  Hippuris vulgaris F. W. Peirson 1930-8-14 9222 Tuolumne Pool near river at Soda Spring, Tuolumne Meadows. 2622 Comment
  RSA69296  Pyrola picta F. W. Peirson 1910-1 827 Tuolumne Wood Creek, Sierra Nevada Comment
  RSA83448  Mentha X piperita F. W. Peirson 1932-8-14 10410 Tuolumne Near Jamestown Comment
  RSA83963  Saxifraga bryophora F. W. Peirson 1927-7-31 7604 Tuolumne On trail from Tuolumne Meadows to Conness Peak. Sierra Nevada. 2744 Comment
  RSA85270  Holodiscus discolor F. W. Peirson 1932-7-24 10402 Tuolumne Abundant on Stanislaus River, Sierra Nevada. 1890 Comment
  RSA93653  Antennaria media F. W. Peirson 1927-8-3 7629 Tuolumne West slope of Mt. Dana, Sierra Nevada. 3506 Comment
  RSA95064  Hemizonia fitchii F. W. Peirson 1932-8-14 10413 Tuolumne Near Jamestown. 366 Comment
  CAS-BOT-BC265284  Penstemon clevelandii subsp. connatus Frank W. Peirson 1922-4-10 1100 Unknown Murray Canon [Murray Canyon] Comment
  GH346576  Prunus ilicifolia F. W. Peirson 1918-5-21 83 Unknown Arroyo Seco, San Gabriel Mts. 381 Comment
  GH349659  Ceanothus integerrimus F. W. Peirson 1920-5-16 2138 Unknown Tujunga Canyon, San Gabriel Mts. 518 Comment
  GH378821  Boechera parishii F. W. Peirson 1922-6-23 3101 Unknown Sugarloaf, San Bernardino Mts. 2971 Comment
  GH417892  Hazardia squarrosa var. grindelioides F. W. Peirson 1918-9-15 Unknown Los Angeles, Sister Elsie Peak, San Gabriel Mts. 1219 Comment
  GH424871  Cryptantha glomeriflora F. W. Peirson 1935-7-16 Unknown Rock Creek Lake Basin, near Heart Lake Meadow Comment
  GH404007  Cryptantha humilis F. W. Peirson 1934-7-11 11184 Unknown Virginia Lakes Basin, on low Artemesia hills east of Blue Lake 3017 Comment
  GH404058  Heterotheca oregona var. rudis F. W. Peirson 1941-7-29 13111 Unknown Stephens Grove State Park Comment
  NY180566  Lessingia germanorum var. peirsonii F. W. Peirson 1923-6-9 3550 Unknown Kings Canyon, Liebre Mts. Comment
  RSA65253  Chorizanthe pungens var. pungens F. W. Peirson 1912-1 1779 Unknown Central coast Comment
  RSA69936  Apocynum androsaemifolium subsp. pumilum F. W. Peirson 1910-1 881 Unknown Sierra Nevada, California Comment
  RSA70154  Triteleia montana Gertrude B. Peirson 1914-07 1659 Unknown Tuolumne Meadow Region Comment
  SEINET10461018  Nemacladus pinnatifidus Frank W. Peirson 1918-6-12 Peirson 219 Unknown Foothills east of Rubio Canyon; San Gabriel Mountains 610 Comment
  JEPS23330  Delphinium parishii subsp. pallidum F. W. Peirson 1923-6-10 3589 Ventura Seymour Creek Mt. Pinos 1798 Comment
  PASA2202  Chaenactis xantiana Frank W. Peirson 1923-6-10 Ventura Seymour Creek, Mt. Pinos Region 1798 Comment
  PASA850  Penstemon breviflorus Frank W. Peirson 1922-7-29 Ventura Seymour Creek, Mt. Pinos Region 1828 Comment
  RSA69440  Frasera neglecta F. W. Peirson 1923-6-10 3588 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA83382  Monardella linoides subsp. oblonga F. W. Peirson 1922-7-29 3215 Ventura Seymour Creek, Mt. Pinos 1829 Comment
  RSA84230  Monardella linoides subsp. linoides F. W. Peirson 1922-7-29 3216 Ventura Seymour Creek, Mt. Pinos 1799 Comment
  RSA87029  Lupinus densiflorus var. glareosus F. W. Peirson 1922-7-29 3250 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA87165  Quercus john-tuckeri F. W. Peirson 1922-7-31 3230 Ventura Seymour Creek. 1829 Comment
  UC501592  Fritillaria pinetorum Frank W. Peirson 1923-6-11 3593 Ventura Mount Pinos 2286 Comment
  UC565515  Malacothrix similis Frank W. Peirson 1925-5-19 5772 Ventura Hueneme Comment
  POM12573  Ivesia santolinoides F. W. Peirson 1922-7-30 3233 Ventura Mount Pinos 2210 Comment
  RSA68341  Lepidium lasiocarpum F. W. Peirson 1925-4-19 5771 Ventura Hueneme Beach Comment
  RSA68761  Delphinium patens subsp. montanum F. W. Peirson 1923-6-11 3590 Ventura Mt. Pinos. 2287 Comment
  RSA70267  Juncus macrandrus F. W. Peirson 1922-7-30 4262 Ventura Seymour Creek, Mt. Pinos. 1951 Comment
  RSA70445  Allium campanulatum F. W. Peirson 1922-7-30 3254 Ventura Mt. Pinos. 2652 Comment
  RSA71105  Calystegia macrostegia subsp. cyclostegia F. W. Peirson 1925-4-18 5755 Ventura Sespe Creek. 305 Comment
  RSA72317  Gilia tetrabreccia F. W. Peirson 1923-6-10 3581 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA79795  Collinsia callosa F. W. Peirson 1923-6-11 3576 Ventura abundant on South Fork of Seymour Creek. 1905 Comment
  RSA82282  Castilleja affinis F. W. Peirson 1923-6-10 4226 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA91162  Lessingia glandulifera var. glandulifera F. W. Peirson 1922-7-29 4229 Ventura Seymour Creek, Mt Pinos 1829 Comment
  RSA92253  Layia heterotricha F. W. Peirson 1923-6-10 3560 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
  RSA93177  Machaeranthera canescens F. W. Peirson 1922-7-30 3226 Ventura Mt. Pinos 2439 Comment
  RSA93918  Xanthium strumarium F. W. Peirson 1920-8-1 2237 Ventura 6 miles west of Ventura 0 Comment
  RSA94901  Cirsium occidentale var. venustum F. W. Peirson 1922-7-31 3261 Ventura Seymour Creek. 1829 Comment
  RSA95246  Microseris lindleyi F. W. Peirson 1923-6-10 3586 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  SD87575  Verbesina encelioides Frank W. Peirson 1925-12-19 Ventura East of Saticoy Comment



  Copyright © 2019 Regents of the University of California — Updated 11 January 2019
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