Search Results — 2000 specimen records retrieved (1080 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA65612  Stellaria media F. W. Peirson 1925-9-20 6432 Alameda Hills back of Oakland. Comment
  RSA65978  Eriogonum nudum var. auriculatum Mabel Peirson 1912-07 1755 Alameda Berkeley Hills Comment
  RSA69046  Dodecatheon hendersonii subsp. cruciatum F. W. Peirson 1926-3-13 6526 Alameda Strawberry Canyon, Berkeley Comment
  RSA83339  Lepechinia calycina Mabel Peirson 1926-5-1 7069 Alameda Berkeley Hills. Comment
  PASA1782  Modiola caroliniana Frank W. Peirson 1925-10-30 Alameda Campus, Berkeley Comment
  POM175512  Wyethia angustifolia F. W. Peirson 1926-4-4 6624 Alameda Berkeley Hills, Cragmont Region. Comment
  RSA0028451  Geranium dissectum Mabel Peirson 1926-5-31 s.n. Alameda Berkeley Hills Comment
  RSA54952  Pyracantha coccinea F. W. Peirson 1945-5-6 s.n. Alameda Altadena Comment
  RSA91755  Anaphalis margaritacea Mabel Peirson 1912-07 s.n. Alameda Berkeley Hills Comment
  RSA97406  Torilis nodosa Mabel Peirson 1926-5-31 7068 Alameda Berkeley Hills Comment
  CAS-BOT-BC119059  Carex phaeocephala Frank Warrington Peirson 1935-7-30 11722 Alpine Woods Lake Region. 2804 Comment
  CAS-BOT-BC174085  Cerastium beeringianum Frank W. Peirson 1937-7-25 12120 Alpine Woods Lake Region. Near the Fourth of July Lake 2895 Comment
  CAS-BOT-BC28174  Carex hoodii Frank W. Peirson 1935-7-24 11710 Alpine Lake Alpine. Comment
  CAS-BOT-BC294430  Ericameria parryi var. aspera Frank W. Peirson 1939-8-12 12847 Alpine Woods Lake Region 2712 Comment
  CAS-BOT-BC314956  Hemizonella minima F. W. Peirson 1935-7-24 11564 Alpine Lake Alpine 2255 Comment
  JEPS27463  Sedum lanceolatum Frank W. Peirson 1937-7-23 12104 Alpine Plateau area sw Woods Lake (Woods Lake Region); , Plateau area sw of Woods Lake 2743 Comment
  JEPS5605  Ranunculus eschscholtzii var. oxynotus Frank W. Peirson 1935-7-30 11638 Alpine Roundtop Woods Lake Region (n slope) 2865 Comment
  POM212505  Cerastium beeringianum F. W. Peirson 1935-7-30 11831 Alpine Woods Lake Region; at the north base of Roundtop. 2866 Comment
  RSA100196  Lonicera involucrata F. W. Peirson 1939-8-11 12830 Alpine Woods Lake Region, below camp; Sierra Nevada. 2546 Comment
  RSA64718  Eriogonum wrightii var. subscaposum F. W. Peirson 1939-8-9 12790 Alpine on rocks north of camp Woods Lake Region. 2546 Comment
  RSA65056  Silene bernardina F. W. Peirson 1935-7-24 11557 Alpine Woods near Lake Alpine 2226 Comment
  RSA65961  Eriogonum umbellatum var. nevadense F. W. Peirson 1935-7-29 s.n. Alpine Open rocky summit of the Elephants Back Woods Lake Region, 2927 Comment
  SD87623  Astragalus whitneyi Frank W. Peirson 1935-7-27 11603 Alpine Summit region south of Ebbets Pass 2804 Comment
  SD87854  Polemonium pulcherrimum Frank W. Peirson 1935-7-30 11639 Alpine Woods Lake Region. 2865 Comment
  SEINET180139 Image available Bromus carinatus var. marginatus Frank W. Peirson 1935-7-28 Alpine Red Lake, Alpine co. California Comment
  UC570547  Allium obtusum var. conspicuum Frank W. Peirson 1935-7-25 11590 Alpine summit of ridge about 2 mi n Lake Alpine; Lake Alpine Region 2560 Comment
  UC570549  Arnica cordifolia Frank W. Peirson 1935-7-26 11593 Alpine n slope above Mokelumne River; Hermit Valley, Mokelumne River 2438 Comment
  UC570551  Erigeron barbellulatus Frank W. Peirson 1935-7-25 11587 Alpine summit of ridge about 2 mi n Lake Alpine; Lake Alpine Region 2560 Comment
  UC570558  Viola adunca Frank W. Peirson 1935-7-24 11567 Alpine Lake Alpine Region, slopes n of lake Lake Alpine Region 2286 Comment
  UC570575  Luzula cascadensis Frank W. Peirson 1935-7-24 11558 Alpine Margins Lake Alpine 2225 Comment
  UC570581  Silene bernardina Frank W. Peirson 1935-7-24 11557 Alpine Lake Alpine 2225 Comment
  UC570586  Potentilla flabellifolia Frank W. Peirson 1935-7-27 11609 Alpine region s Ebbets Pass; region s of Ebbets Pass 2743 Comment
  UC577214  Carex nebrascensis F. W. Peirson 1935-7-28 11716 Alpine Red Lake 2407 Comment
  UC640217  Polygonum polygaloides subsp. kelloggii Frank W. Peirson 1939-8-12 12844 Alpine meadow s-ward from Carson Pass; Woods Lake Region 2621 Comment
  UC640225  Allium campanulatum Frank W. Peirson 1939-8-14 Alpine East Fork of Woods Creek Woods Lake Region, East Fork of Woods Creek 2590 Comment
  UC640237  Phacelia hydrophylloides Frank W. Peirson 1939-8-12 12843 Alpine Carson Pass Woods Lake Region 2621 Comment
  UC640239  Crepis acuminata Frank W. Peirson 1939-8-12 12842 Alpine slopes a short distance below Frog Lake; Woods Lake Region 2712 Comment
  UCR142546  Gnaphalium palustre F. W. Peirson 1939-8-12 12833 Alpine Sierra Nevada Mtns., Woods Lake region; south of Carson Pass 2622 Comment
  CAS-BOT-BC114841  Carex whitneyi Frank Warrington Peirson 1935-7-26 11715 Alpine Hermit Valley along banks of the Mokelumne River. 2286 Comment
  CAS-BOT-BC31230  Carex lenticularis var. impressa Frank W. Peirson 1939-8-10 12810 Alpine Woods Lake 2560 Comment
  CAS-BOT-BC34452  Carex deflexa var. boottii Frank W. Peirson 1935-7-29 11721 Alpine Wood Lake. 2560 Comment
  POM212915  Potentilla drummondii F. W. Peirson 1935-7-29 11622 Alpine Along trail in open country Southeastward from lake Comment
  POM231936  Horkelia fusca subsp. parviflora F. W. Peirson 1935-7-28 11619 Alpine Lake margin at embankment at foot of Red Lake. 2409 Comment
  POM231940  Trifolium longipes F. W. Peirson 1937-7-26 12123 Alpine Wood Lake Region, Woods Creek below the lake. 2561 Comment
  POM258044  Carex athrostachya F. W. Peirson 1935-7-24 s.n. Alpine Lake Alpine. 2226 Comment
  RSA100243  Valeriana capitata subsp. californica F. W. Peirson 1939-8-10 12797 Alpine Above Winnemucca Lake, Woods Lake Region, Sierra Nevada 2744 Comment
  RSA464467  Lewisia pygmaea F. W. Peirson 1935-7-30 s.n. Alpine Alpine County: Woods Lake Region. High open plain NW from Roundtop 2805 Comment
  RSA65698  Silene douglasii var. douglasii F. W. Peirson 1935-7-29 6957 Alpine Along trail SE of lake, Woods Lake region. Comment
  RSA66761  Arabis divaricarpa F. W. Peirson 1937-7-23 12110 Alpine Along western edge of plateau southwest of Woods Lake 2805 Comment
  RSA69407  Delphinium nuttallianum F. W. Peirson 1937-7-26 12126 Alpine Creek E of Woods Lake. 2622 Comment
  RSA71892B  Navarretia capillaris F. W. Peirson 1939-8-13 s.n. Alpine Near Carson Pass, Sierra Nevada. Comment
  RSA72637  Wyethia mollis F. W. Peirson 1935-7-24 11565 Alpine Lake Alpine. 2287 Comment
  RSA73737  Navarretia breweri F. W. Peirson 1937-7-23 12111 Alpine Southwest of Woods Lake. 2744 Comment
  RSA77587  Mertensia ciliata var. stomatechoides F. W. Peirson 1939-8-10 12794 Alpine North shore of Winnemucca Lake, Woods Lake Region, Sierra Nevada 2744 Comment
  RSA79463  Collinsia torreyi var. torreyi F. W. Peirson 1935-7-24 11570 Alpine North of Lake Alpine, Sierra Nevada. 2287 Comment
  RSA79934  Cryptantha humilis F. W. Peirson 1937-7-23 12108 Alpine Southwest of Woods Lake. 2744 Comment
  RSA80035  Veronica serpyllifolia var. humifusa F. W. Peirson 1939-8-10 12814 Alpine Woods Lake Region. 2546 Comment
  RSA80461  Mimulus moschatus var. longiflorus F. W. Peirson 1939-8-14 12864 Alpine Along East Fork, Woods Lake Region. 2622 Comment
  RSA84274  Ranunculus alismifolius var. hartwegii F. W. Peirson 1935-7-29 11623 Alpine Along trail SW from Woods Lake, Sierra Nevada. 2744 Comment
  RSA84319  Isoetes bolanderi F. W. Peirson s.n. Alpine Margin of Woods Lake, Sierra Nevada. Comment
  RSA87424  Lupinus polyphyllus subsp. superbus F. W. Peirson 1937-7-23 12103 Alpine Southwest of Woods Lake. 2805 Comment
  RSA88827  Carex specifica F. W. Peirson 1935-7-26 11713 Alpine South of the Mokelumne River, Hermit Valley. 2317 Comment
  RSA90616  Stenotus acaulis F. W. Peirson 1937-7-25 12122 Alpine East of Round Top Lake, Woods Lake Region. 2866 Comment
  RSA91053  Carex multicostata F. W. Peirson 1937-7-26 12206 Alpine East of Winnemucca Lake, Woods Lake Region, Sierra Nevada. 2835 Comment
  RSA91694  Bromus suksdorfii F. W. Peirson 1939-8-14 12867 Alpine along the East Fork, Woods Lake region. 2622 Comment
  RSA93942  Artemisia arbuscula subsp. arbuscula F. W. Peirson 1937-7-26 12128 Alpine East of Winnemucca Lake, Woods lake region 2835 Comment
  RSA93961  Ericameria suffruticosa F. W. Peirson 1935-7-27 11600 Alpine Summit region S of Ebbet's Pass. Sierra Nevada. 2805 Comment
  RSA94848  Arnica mollis F. W. Peirson 1939-8-9 12785 Alpine Near Woods Lake, Sierra Nevada 2546 Comment
  RSA94985  Agoseris monticola F. W. Peirson 1939-8-11 12821 Alpine Base of a small stream flowing into Round Top Lake, Woods lake Region, Sierra Nevada 2927 Comment
  RSA97259  Sphenosciadium capitellatum F. W. Peirson 1939-8-14 12860 Alpine near Woods Lake, Sierra Nevada 2561 Comment
  RSA97390  Osmorhiza occidentalis F. W. Peirson 1937-7-26 s.n. Alpine East Fork of Woods Creek, Sierra Nevada Comment
  UC640219  Silene douglasii Frank W. Peirson 1939-8-9 Alpine Woods Lake Region 2545 Comment
  CAS-BOT-BC308162  Eriophyllum lanatum var. grandiflorum Frank W. Peirson 1926-6-21 6766 Butte 10 miles east of Chico on the Humboldt Road Comment
  RSA65644  Claytonia palustris F. W. Peirson 1926-6-21 6774 Butte Butte Meadow, Humboldt Road Comment
  PASA603  Mollugo verticillata Frank W. Peirson 1926-6-20 Butte Banks of Sacramento River, 5 miles west of Chico Comment
  RSA69605  Sagittaria latifolia F. W. Peirson 1926-6-20 6759 Butte Banks of Sacramento River, 5 miles west of Chico. Comment
  UC570556  Scirpus congdonii Frank W. Peirson 1935-7-23 11539 Calaveras about 12 mi ne Big Trees (North Fork Stanislaus River Region); , ne of Big Trees 1828 Comment
  RSA80117  Mimulus breweri F. W. Peirson 1935-7-23 11542 Calaveras North Fork of Stanislaus River Comment
  RSA94182  Hemizonia luzulifolia F. W. Peirson 1925-11-15 6473 Contra Costa Below Arlington. Comment
  RSA94492  Arnica discoidea F. W. Peirson 1923-7-1 3919 Contra Costa Mt. Diablo Comment
  RSA70042  Cypripedium californicum Frank W. Peirson 1923-7-13 3695 Del Norte 10 miles north of Gasquet Comment
  RSA87154  Quercus vacciniifolia F. W. Peirson 1923-7-13 3702 Del Norte 7 miles north of Gasquet. Comment
  RSA87360  Melica harfordii F. W. Peirson 1941-7-27 13121 Del Norte Between the forks of the creek at Patrick's Creek Forest Camp. Comment
  CAS-BOT-BC300992  Eriophyllum lanatum var. achilleoides Frank W. Peirson 1923-7-13 3913 Del Norte 7 miles northeast of Gasquet on the Grants Pass road Comment
  CAS-BOT-BC416400  Linnaea borealis subsp. longiflora F. W. Peirson 1923-7-13 3865 Del Norte Road from Crescent City to Grants Pass, about 2 miles S of the Oregon line Comment
  RSA0076440  Sedum laxum subsp. laxum F. W. Peirson 1923-7-12 3958 Del Norte 10 miles northeast of Crescent City. Comment
  RSA68695  Maianthemum dilatatum Frank W. Peirson 1923-7-12 3675 Del Norte Northeast of Crescent City Comment
  RSA69247  Hastingsia serpentinicola Frank W. Peirson 1941-7-28 13103 Del Norte 10 miles below Patricks Creek Camp. Comment
  RSA69249  Hastingsia alba Frank W. Peirson 1923-7-13 3680 Del Norte 4 miles northeast of Gasquet Comment
  RSA72660  Balsamorhiza hookeri F. W. Peirson 1925-7-1 6188 Del Norte El dorado County. open woods, state line, Lake Tahoe 1951 Comment
  RSA79823  Penstemon sagittatus F. W. Peirson 1923-7-13 3845 Del Norte 7 miles N of Gasquet. Comment
  RSA83944  Ranunculus uncinatus var. parviflorus F. W. Peirson 1928-7-5 7961 Del Norte Redwood Auto Camp 10-15 miles S of Crescent City Comment
  RSA86268  Aspidotis densa F. W. Peirson 1923-7-12 3632 Del Norte 10 miles northeast of Crescent City Comment
  RSA92673  Eriophyllum lanatum var. achilleoides F. W. Peirson 1923-7-13 3913 Del Norte 7 miles N of Gasquet. Comment
  RSA94422  Chrysanthemum leucanthemum F. W. Peirson 1928-7-5 7960 Del Norte Open field 15-20 miles north of Crescent City Comment
  RSA94691  Senecio bolanderi var. bolanderi F. W. Peirson 1923-7-12 3924 Del Norte 10 miles northeast of Crescent City. Comment
  RSA95167  Hieracium scouleri var. nudicaule F. W. Peirson 1923-7-13 3937 Del Norte 4 miles northeast of Gasquet. Comment
  RSA95381  Sidalcea malviflora subsp. nana F. W. Peirson 1923-7-13 3775 Del Norte 4 miles northeast of Gasquet. Comment
  RSA97411  Angelica arguta F. W. Peirson 1941-7-27 13100 Del Norte Patrick Creek Forest Camp Comment
  JEPS38044  Chrysolepis sempervirens Frank W. Peirson 1925-7-4 6264 El Dorado Fallen Leaf Lake Comment
  LA38980  Mimulus nanus var. mephiticus Frank W. Peirson; 1925-7-8 6321 El Dorado Road down the American River 1981 Comment
  LA95396  Mimulus nanus var. mephiticus Frank W. Peirson; 1925-7-8 6321 El Dorado Road down American River 1981 Comment
  RSA76995  Acer glabrum var. torreyi F. W. Peirson 1925-7-4 6267 El Dorado Shore of Fallen Leaf Lake, Sierra Nevada. 1951 Comment
  RSA88681  Carex lemmonii F. W. Peirson 1925-7-2 6225 El Dorado Glen Alpine Ranch, 0.25 miles above Fallen Leaf Lake, Sierra Nevada. 1982 Comment
  SD87816  Porterella carnosula Frank W. Peirson 1925-7-1 6191 El Dorado Lake Tahoe, State Line 1950 Comment
  UC1026438  Carex nebrascensis F. W. Peirson 1937-7-28 13607 El Dorado State Line Lake Tahoe 1905 Comment
  UC635371  Epilobium oregonense Frank W. Peirson 1925-7-1 6197 El Dorado State Line Lake Tahoe (meadow) 1920 Comment
  POM87084  Carex canescens F. W. Peirson 1925-7-2 6226 El Dorado Fallen Leaf Lake. Road to Glen Alpine. 1982 Comment
  RSA0024723  Ribes roezlii F. W. Peirson 1925-7-3 6230 El Dorado Glen Alpine Creek Basin, Sierra Nevada. 2287 Comment
  RSA100239  Porterella carnosula F. W. Peirson 1925-7-1 6191 El Dorado State Line, Lake Tahoe. 1951 Comment
  RSA65643  Montia linearis F. W. Peirson 1925-7-1 6189 El Dorado State Line, Lake Tahoe 1905 Comment
  RSA66327  Polygonum phytolaccifolium F. W. Peirson 1925-7-2 6221 El Dorado Glen Alpine road, 1/2 mile above Fallen Leaf, Sierra Nevada Comment
  RSA71917  Gilia capitata F. W. Peirson 1925-7-8 6320 El Dorado road down American River Comment
  RSA72304  Navarretia leptalea subsp. bicolor F. W. Peirson 1925-7-7 6311 El Dorado meadow on trail by Upper Echo Lake, Sierra Nevada 2287 Comment
  RSA73134  Navarretia divaricata F. W. Peirson 1925-7-8 6324 El Dorado Road down American River, Sierra Nevada 1524 Comment
  RSA79586  Plagiobothrys torreyi F. W. Peirson 1925-7-1 6179 El Dorado Lake Tahoe, at State Line 1921 Comment
  RSA80099  Mimulus torreyi F. W. Peirson 1925-7-4 6263 El Dorado Road on east shore of Fallen Leaf Lake, Sierra Nevada. 1951 Comment
  RSA80476  Mimulus lewisii F. W. Peirson 1925-7-6 6299 El Dorado Trail from Fallen Leaf Lake to Lake of the Woods. 2287 Comment
  RSA82583  Stachys rigida subsp. rivularis F. W. Peirson 1931-8-7 9530 El Dorado Glen Alpine Creek Basin 1982 Comment
  RSA84273  Ranunculus alismifolius var. hartwegii F. W. Peirson 1925-7-3 6252 El Dorado Glen Alpine Creek Basin, Sierra Nevada. 2500 Comment
  RSA85309  Paeonia brownii F. W. Peirson 1925-7-1 6169 El Dorado State Line, Lake Tahoe 1905 Comment
  RSA87319  Galium bifolium F. W. Peirson 1925-7-4 6265 El Dorado Road along E shore of Fallen Leaf Lake. 1951 Comment
  RSA90618  Stenotus acaulis F. W. Peirson 1925-7-5 6273 El Dorado Plateau on summit of ride [ridge?] of Mt Tallac. 2591 Comment
  RSA90702  Chrysothamnus nauseosus subsp. albicaulis F. W. Peirson 1931-8-9 9542 El Dorado Plateau along the East Trail just before it joins the Middle Trail, Mt. Tallac 2622 Comment
  RSA91742  Muhlenbergia richardsonis F. W. Peirson 1931-8-7 9527 El Dorado Above Grass Lake, Glen Alpine Creek Basin 2256 Comment
  RSA92234  Madia minima F. W. Peirson 1925-7-7 6304 El Dorado Trail along Echo Lake. Sierra Nevada. 2287 Comment
  RSA93152  Aster eatonii F. W. Peirson 1931-8-7 9532 El Dorado Glen Alpine Road, Glen Alpine Creek Basin, Sierra Nevada 2043 Comment
  RSA93386  Symphoricarpos acutus F. W. Peirson 1925-7-6 6287 El Dorado 1/4 mile above Fallen Leaf Camp, Sierra Nevada. 1982 Comment
  RSA94893  Arnica parryi F. W. Peirson 1925-7-3 6243 El Dorado Glen Alpine Creek Basin. Sierra Nevada. 2134 Comment
  SD87644  Penstemon deustus Frank W. Peirson 1925-7-2 6219 El Dorado Glen Alpine Road, Ao mile from Fallen Leaf Lake 1981 Comment
  CAS-BOT-BC28131  Carex hoodii Frank W. Peirson 1939-8-21 12885 Fresno South Fork San Joanquin River. Between Blaney Meadows and Florence Lake. 2286 Comment
  CAS-BOT-BC28495  Carex lenticularis var. lipocarpa Frank W. Peirson 1939-8-22 13595 Fresno Jackass Meadow, Florence Lake. 2179 Comment
  CAS-BOT-BC312379  Hieracium albiflorum Frank W. Peirson 1921-8-9 1500 Fresno Aspen Meadow, South Fork San Joaquin River 2514 Comment
  CAS-BOT-BC317188  Packera werneriifolia Frank Warrington Peirson 1921-8-11 2561 Fresno Southwest slope of Mount Darwin, Evolution Lake region, Sierra Nevada. 3535 Comment
  CAS-BOT-BC362825  Raillardella scaposa Frank W. Peirson 1921-8-17 1412 Fresno South Fork Kings River 2971 Comment
  POM12539  Gaultheria humifusa F. W. Peirson 1921-8-13 2530 Fresno Grouse Meadows. 2515 Comment
  RSA65408  Lewisia glandulosa F. W. Peirson 1921-8-11 606 Fresno Evolution Lake Region, Sierra Nevada. 3354 Comment
  RSA69654  Spiranthes romanzoffiana Frank W. Peirson 1919-8-24 1700 Fresno Rae Lake, Sierra Nevada. 3232 Comment
Read comments
Dec 23 2018
  RSA70566  Vaccinium uliginosum subsp. occidentale F. W. Peirson 1917-08 837 Fresno Grouse Meadows, Sierra Nevada. 2515 Comment
  RSA72172  Epilobium ciliatum subsp. glandulosum F. W. Peirson 1919-8-24 769 Fresno Rock terrace above south end of Rae Lake, Sierra Nevada 3323 Comment
Read comments
Dec 23 2018
  RSA75979  Draperia systyla F. W. Peirson 1940-6-2 12932 Fresno Along road to Kings River; from canyon of South Fork of Kings River. 1067 Comment
  RSA82109  Utricularia intermedia F. W. Peirson 1939-8-22 12881 Fresno Jackass Meadow, San Joaquin River, Sierra Nevada 2180 Comment
  RSA86181  Aspidotis densa F. W. Peirson 1939-8-20 12870 Fresno Abundant along west trail about Florence Lake 2226 Comment
  RSA86186  Cryptogramma acrostichoides F. W. Peirson 1921-8-14 2557 Fresno Triple Falls, Cartridge Creek, Sierra Nevada 2439 Comment
Read comments
Oct 2 2011
  UC643215  Draperia systyla Frank W. Peirson 1940-6-2 12932 Fresno Canyon of South Fork Kings River 1066 Comment
  CAS-BOT-BC45128  Anaphalis margaritacea Frank W. Peirson 1921-8-9 2635 Fresno South Fork San Joaquin River 2529 Comment
  PASA1897  Epilobium latifolium Frank W. Peirson 1921-8-9 Fresno Aspen Meadow, South Fork San Joaquin Riv. 2514 Comment
  RSA0023170  Ribes quercetorum F. W. Peirson 1925-3-23 5633 Fresno Between Coalinga and Parksfield, at County Public Camp. 1174 Comment
  RSA0129116  Arabis holboellii var. retrofracta F. W. Peirson 1917-8-12 1912 Fresno Grouse Meadows, Middle Fork Kings River, Sierra Nevada 2515 Comment
  RSA80083  Mimulus whitneyi F. W. Peirson 1911-7-29 1135 Fresno Trail from Hume to Summit Meadow, Sierra Nevada. Comment
  RSA80280  Orthocarpus lacerus F. W. Peirson 1914-8-10 1167 Fresno Warm Creek, Sierra Nevada Comment
  RSA84864  Ranunculus eschscholtzii F. W. Peirson 1921-8-11 2531 Fresno Evolution Creek Region, slopes of Mt. Dawin, Sierra Nevada. 3430 Comment
  RSA85685  Potentilla fruticosa F. W. Peirson 1910-7-25 1977 Fresno Mono Pass, Sierra Nevada Comment
  RSA85808  Ivesia muirii F. W. Peirson 1921-8-12 5256 Fresno N slope of Muir Pass, Sierra Nevada. 3582 Comment
  RSA85873  Fragaria virginiana subsp. platypetala F. W. Peirson 1919-8-18 1959 Fresno Summit Meadow, Sierra Nevada. 2439 Comment
  RSA87070  Lupinus densiflorus var. palustris F. W. Peirson 1925-3-23 5632 Fresno Shortly below County Public Camp, Inner Coast Ranges, between Coalinga and Parkfield, western part of the county. 884 Comment
  RSA87222  Lupinus pratensis F. W. Peirson 1921-8-10 2554 Fresno Evolution Creek, Sierra Nevada 2957 Comment
  RSA90158  Astragalus gambelianus F. W. Peirson 1925-3-23 5640 Fresno Between Coalinga and Parkfield above the County Auto Camp, Comment
  RSA90268  Agrostis humilis F. W. Peirson 1919-8-5 1577 Fresno Center Basin. Sierra Nevada. 3506 Comment
  RSA90402  Lotus unifoliolatus F. W. Peirson 1925-10-22 6468 Fresno San Joaquin River at Boulevard. [Valley Blvd?] Comment
  RSA90923  Erigeron compositus F. W. Peirson 1911-8-3 1281 Fresno Rae Lake, Sierra Nevada 3232 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
  RSA91005  Erigeron petiolaris F. W. Peirson 1921-8-17 2541 Fresno Along stream from Cardinal Lake, Upper Fork of Kings River (South Fork) 3354 Comment
  RSA91766  Anaphalis margaritacea F. W. Peirson 1921-8-9 2635 Fresno South Fork of the San Joaquin River, Sierra Nevada 2530 Comment
  RSA92616  Salix eastwoodiae F. W. Peirson 1921-8-12 723 Fresno Little Pete Meadow. Middle fork of Kings River; Sierra Nevada. 2774 Comment
  RSA93145  Aster occidentalis var. occidentalis F. W. Peirson 1914-08 1271 Fresno South Fork of San Joaquin River, Sierra Nevada. Comment
  RSA93272  Ericameria discoidea F. W. Peirson 1919-8-26 1240 Fresno Mt. Baxter Cirque, Woods Lake side, Sierra Nevada 3476 Comment
  RSA93889  Helenium bigelovii F. W. Peirson 1939-8-21 12875 Fresno South Fork of San Joaquin River. 2287 Comment
  RSA94549  Raillardella scaposa F. W. Peirson 1921-8-17 2533 Fresno South Fork of Kings River, Sierra Nevada. 3049 Comment
  RSA94722  Senecio fremontii F. W. Peirson 1921-8-12 1438 Fresno Le Conte Canyon, middle fork of Kings River, Sierra Nevada. 3049 Comment
  RSA94889  Arnica amplexicaulis F. W. Peirson 1917-8-12 1425 Fresno Grouse Meadows, Middle Fork Kings River, Sierra Nevada 2515 Comment
  RSA97375  Sanicula bipinnatifida F. W. Peirson 1925-3-23 5645 Fresno On road from Coalinga to Parkfield Comment
  CAS-BOT-BC301183  Eriophyllum lanatum var. arachnoideum Frank W. Peirson 1926-7-12 7029 Humboldt West slope Coast Range back of Orick Comment
  CAS-BOT-BC342559  Luina hypoleuca Frank W. Peirson 1926-7-12 7026 Humboldt Klamath River near Weitchpec Comment
  RSA33737  Aster chilensis F. W. Peirson 1923-7-11 3882 Humboldt 7 miles north of Arcata. Comment
  RSA69417  Centaurium muehlenbergii F. W. Peirson 1923-7-10 3803 Humboldt Garberville. Comment
  RSA79773  Keckiella corymbosa F. W. Peirson 1926-7-13 7060 Humboldt Mad River, near Blue Lake. Comment
  RSA88710  Carex lenticularis var. limnophila F. W. Peirson 1926-7-13 7046 Humboldt Along shore of first lagoon south of Orick. Comment
  SD87718  Keckiella corymbosa Frank W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec Comment
  RSA69739  Luzula parviflora F. W. Peirson 1923-7-11 3673 Humboldt About 3 miles north of Orick. Comment
  RSA70055  Epipactis gigantea Frank W. Peirson 1923-7-9 3697 Humboldt State Park on Eel River Comment
  RSA70148  Dichelostemma ida-maia F. W. Peirson 1926-7-12 7030 Humboldt W slope of Coast Range back of Orick. Comment
  RSA71937  Collomia heterophylla F. W. Peirson 1926-7-12 7035 Humboldt Redwood Creek bottom landes below bridge, Orick Comment
  RSA82291  Scutellaria antirrhinoides F. W. Peirson 1932-7-7 10259 Humboldt Willow Creek. A few miles above town of that name. Comment
  RSA83441  Pogogyne douglasii F. W. Peirson 1926-7-14 7066 Humboldt Redwood Camp, Lower Eel River Comment
  RSA88658  Carex laeviculmis F. W. Peirson 1941-7-23 13091 Humboldt Van Damme State Park. Along the creek about 2 miles from camp. Comment
  RSA90948  Trifolium fucatum var. fucatum F. W. Peirson 1926-7-12 7032 Humboldt Orick Comment
  RSA90994  Trifolium wormskioldii F. W. Peirson 1923-7-11 3619 Humboldt Along road 7 miles north of Arcata. Comment
  RSA91828  Calamagrostis bolanderi F. W. Peirson 1941-7-28 13115 Humboldt at Patrick's Point State Park Comment
  RSA95100  Crepis capillaris F. W. Peirson 1923-7-11 3936 Humboldt flats N of Eureka. Comment
  CAS-BOT-BC178631  Astragalus coccineus Frank W. Peirson 1922-4-13 2877 Imperial Mountain Springs, below store. 792 Comment
  POM128762  Atriplex elegans var. fasciculata F. W. Peirson 1927-4-16 7202 Imperial A couple of miles below foot of Mountain Springs grade Comment
  RSA65349  Atriplex elegans var. fasciculata F. W. Peirson 1927-4-26 7207 Imperial 2 miles below foot of Mtn Springs Grade Comment
  RSA69541  Mentzelia involucrata F. W. Peirson 1941-4-8 s.n. Imperial Painted Gorge north of the San Diego to El Centro hwy. Comment
  RSA69969  Abronia villosa var. villosa F. W. Peirson 1927-4-15 7205 Imperial near Colorado River, Ft. Yuma Comment
  RSA70497  Erodium texanum F. W. Peirson 1922-4-12 2886 Imperial 28 miles southeast of Coachella. Comment
  RSA74717  Nama hispida var. spathulata F. W. Peirson 1932-3-21 9780 Imperial The east edge of the Sand Hills east of Holtville 61 Comment
  RSA75389  Camissonia cardiophylla F. W. Peirson 1935-4-16 11461 Imperial North of bridge of canal at Laguna Dam [AZ], north of Yuma. Comment
  RSA75394  Camissonia chamaenerioides F. W. Peirson 1922-4-13 2898 Imperial Mountain Spring Grade. 457 Comment
  RSA75417  Oenothera deltoides subsp. deltoides F. W. Peirson 1932-3-21 9771 Imperial 8 miles east of Holtsville 15 Comment
  RSA76970  Condalia globosa var. pubescens F. W. Peirson 1932-3-21 9794 Imperial 24 miles north of Ogibly 183 Comment
  RSA77057  Loeseliastrum schottii F. W. Peirson 1927-4-16 7218 Imperial Foot of Mountain Springs Grade, Western Imperial County Comment
  RSA77072  Langloisia setosissima subsp. setosissima F. W. Peirson 1922-4-12 4134 Imperial 30 miles south of Coachella. Comment
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Oct 8 2011
  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
  RSA77886  Tiquilia palmeri F. W. Peirson 1927-4-15 7202 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  SEINET6692574 Image available Eriogonum deserticola Frank W. Peirson 1927-11-26 7679 Imperial Open desert along boulevard about 1/2 way down the Salton Sea. Comment
  UC501479  Chylismia claviformis subsp. yumae Frank W. Peirson 1932-3-21 9768 Imperial 6 mi e Holtville (slightly above sea level) Comment
  UC650709  Phacelia pachyphylla Frank W. Peirson 1941-4-8 13072 Imperial road to gorge turns n from Boulevard a few mi e of Mountain Springs Grade Painted Gorge Comment
  UCR136649  Nicotiana obtusifolia F. W. Peirson 1935-4-16 11462 Imperial Sonoran (Colorado) Desert, Laguna Dam, north of the bridge over the canal 49 Comment
  UCR142721  Camissonia claviformis subsp. peirsonii F. W. Peirson 1922-4-12 4512 Imperial Sonoran (Colorado) Desert, Twenty-eight miles south [SE] of Coachella -56 Comment
  RSA0121532  Apiastrum angustifolium F. W. Peirson 1927-4-16 7210 Imperial Foot of Mountain Springs Grade (road, San Diego to El Centro). Comment
  RSA90379  Lotus tomentellus F. W. Peirson 1922-4-12 4082 Imperial 28 miles south of Coachella. Comment
  RSA90744  Astragalus magdalenae var. peirsonii F. W. Peirson 1927-4-15 7194 Imperial Lower part of dunes west of Yuma. Comment
  RSA92214  Palafoxia arida var. gigantea F. W. Peirson 1927-4-15 7198 Imperial Sand dunes west of Yuma. Comment
  RSA92876  Baileya pauciradiata F. W. Peirson 1932-3-21 9772 Imperial 10 miles east of Holtville. 23 Comment
  RSA93764  Geraea canescens F. W. Peirson 1922-4-12 4239 Imperial 28 miles south of Coachella. Comment
  RSA93894  Encelia farinosa var. farinosa F. W. Peirson 1932-3-21 9792 Imperial Desert 10 mi. N of Ogilby. 152 Comment
  RSA95058  Rafinesquia neomexicana F. W. Peirson 1922-4-13 2910 Imperial Mountain Springs, western Imperial County on El Centro to San Diego highway. 793 Comment
  RSA991825  Cenchrus echinatus F. W. Peirson 1922-4-12 2913 Imperial 28 miles south of Coachella. Comment
  CAS-BOT-BC108425  Salix exigua F. W. Peirson 1936-4-6 11808 Inyo Lower Titus Canyon, Death Valley 1066 Comment
  CAS-BOT-BC118683  Carex proposita Frank Warrington Peirson 1934-7-21 11305 Inyo Rock Creek Lake Basin. Trail to cirque on the east slope. 3261 Comment
  CAS-BOT-BC119077  Carex phaeocephala Frank Warrington Peirson 1934-7-24 s.n. Inyo Rock Creek Lake Basin, Dry rocky mountain slope W of Heart Lake. Comment
  CAS-BOT-BC129840  Salix bonplandiana F. W. Peirson 1936-4-6 13526 Inyo Lower Titus Canyon, Death Valley Comment
  CAS-BOT-BC13872  Boechera inyoensis Frank W. Peirson 1940-8-6 12975 Inyo Rock Creek Lake Basin. Mountain slope west of Heart Lake. 3291 Comment
  CAS-BOT-BC142365  Ivesia shockleyi Frank W. Peirson 1929-7-20 8502 Inyo Green Lake Valley, Bishop Creek 3291 Comment
  CAS-BOT-BC158629  Purshia tridentata var. glandulosa Frank W. Peirson 1931-7-28 9469 Inyo Below Heart Lake, Rock Creek Lake Basin 3200 Comment
  CAS-BOT-BC193450  Vaccinium uliginosum Frank W. Peirson 1931-7-26 s.n. Inyo Along stream south of Long Lake, Rock Creek Lake Basin 3261 Comment
  CAS-BOT-BC20928  Carex heteroneura Frank W. Peirson 1939-8-3 13581 Inyo Rock Creek Lake Basin. Above Heart Lake Meadow. 3230 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-BC22203  Carex helleri Frank W. Peirson 1934-7-21 11398 Inyo Rock Creek Lake Basin. In the cirque on the east slope. 3474 Comment
  CAS-BOT-BC22204  Carex helleri Frank W. Peirson 1934-7-22 s.n. Inyo Rock Creek Lake Basin. Above the Glacial lakes. 3474 Comment
  CAS-BOT-BC239758  Ptilagrostis kingii F. W. Peirson 1940-9-10 13545 Inyo Heart Lake Meadow, Rock Creek Lake Basin 3200 Comment
  CAS-BOT-BC251477  Castilleja lemmonii F. W. Peirson 1930-8-3 9062 Inyo from shore of Heart Lake, Rock Creek Lake Basin 3200 Comment
  CAS-BOT-BC253150  Eriogonum nudum var. scapigerum Frank W. Peirson 1930-8-7 9123 Inyo Ruby Lakes where stream from Mono Pass enters it, Rock Creek Lake Basin 3398 Comment
  CAS-BOT-BC286845  Ericameria discoidea Frank W. Peirson 1930-8-5 9097 Inyo Rock Creek Lake Basin. Trail to Mono Pass 3596 Comment
  CAS-BOT-BC300309  Erigeron tener Frank W. Peirson 1934-7-28 11289 Inyo On s. slope of Transverse Ridge, Rock Creek Lake Basin 3291 Comment
  CAS-BOT-BC30761  Amphipappus fremontii Frank W. Peirson 1932-5-6 9898 Inyo 8 miles east of Darwin 1219 Comment
  CAS-BOT-BC318399  Packera cana Frank Warrington Peirson 1931-7-20 s.n. Inyo Rock Creek Lake basin 3505 Comment
  CAS-BOT-BC31883  Carex microptera Frank W. Peirson 1934-7-23 11401 Inyo Heart Lake Meadow, RockCreek Lake Basin. 3215 Comment
  CAS-BOT-BC31884  Carex microptera Frank W. Peirson 1934-7-23 11401 Inyo Heart Lake Meadow, RockCreek Lake Basin. 3215 Comment
  CAS-BOT-BC34312  Carex congdonii F. W. Peirson 1930-8-5 9106 Inyo Rock Creek Basin. Gorge east of Mono Pass. 3596 Comment
  CAS-BOT-BC349766  Monoptilon bellioides F. W. Peirson 1928-4-2 7780 Inyo About 1 mile east of Bradbury Well, Death Valley region Comment
  CAS-BOT-BC58132  Rhododendron columbianum Frank W. Peirson 1933-8-4 s.n. Inyo Shores of Glacial Lakes at foot of Mt. Dade. Rock Creek Lake Basin. 3383 Comment
  CAS-BOT-BC76267  Arctomecon merriamii Frank W. Peirson 1932-5-9 9945 Inyo Keane Spring, Funeral Mountains. 1249 Comment
  CAS-BOT-BC83446  Thalictrum alpinum Frank W. Peirson 1939-8-5 12892 Inyo Rock Creek Lake Basin. 3291 Comment
  CAS-BOT-BC9404  Carex subnigricans Frank Warrington Peirson 1934-7-23 11400 Inyo Rock Creek Lake Basin= 3215 Comment
  CAS-BOT-BC9407  Carex subnigricans Frank Warrington Peirson 1934-7-20 10828 Inyo Rock Creek Lake Basin, above Ruby Falls 3383 Comment
  JEPS1106  Phacelia perityloides Frank W. Peirson 1936-4-6 11807 Inyo Titus Canyon 914 Comment
  JEPS22389  Calyptridium umbellatum Frank W. Peirson 1937-8-9 Inyo above Mono Pass (Rock Creek Lake Basin); Rock Creek Lake Basin 3672 Comment
  JEPS22392  Triglochin palustris Frank W. Peirson 1937-8-6 12180 Inyo small flat on e side Rock Creek Lake Basin 3261 Comment
  JEPS2566 Image available Epilobium angustifolium Frank W. Peirson 1921-8-18 2538 Inyo Taboose Pass; ; Taboose Pass, Inyo Co. 3200 Comment
  JEPS37043  Artemisia dracunculus Frank W. Peirson 1933-8-18 s.n. Inyo Rock Creek Lake Basin, slope west of Long Lake 3261 Comment
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Dec 3 2015
  JEPS3856  Castilleja nana Frank W. Peirson 1937-8-11 Inyo in the East Recess Rock Creek Lake Basin 3444 Comment
  JEPS49135  Ephedra funerea Frank W. Peirson 1928-4-2 7790 Inyo near Bradbury Well; Death Valley Region Comment
  JEPS50885  Silene bernardina Frank W. Peirson 1934-7-24 Inyo Heart Lake Rock Creek Lake Basin, Heart Lake 3352 Comment
  JEPS67189  Luzula spicata Frank W. Peirson 1933-8-9 Inyo Rock Creek Lake Basin 3474 Comment
  PASA1995  Cryptantha pterocarya var. cycloptera Frank W. Peirson 1928-4-2 Inyo Near Bradbury Well, Death Valley Region Comment
  PASA918  Atrichoseris platyphylla Frank W. Peirson 1928-4-2 Inyo Near Bradbury Wells, Death Valley Region Comment
  POM203754  Symphoricarpos vaccinioides F. W. Peirson 1934-7-25 s.n. Inyo Rock Creek Lake Basin. Foot of escarpment at Heart Lake. 3232 Comment
  POM203890  Epilobium angustifolium var. macrophyllum F. W. Peirson 1933-8-11 s.n. Inyo Rock Creek Lake Basin, Escarpment west of Heart Lake. 3232 Comment
  POM254385  Luzula orestera F. W. Peirson 1940-8-1 12966 Inyo Long Lake, Rock Creek Lake Basin. 3262 Comment
  POM254400  Silene bernardina F. W. Peirson 1940-8-6 12972 Inyo Mountain slope west of Heart Lake, Rock Creek Lake Basin. 3293 Comment
  POM254418  Galium hypotrichium subsp. hypotrichium F. W. Peirson 1940-8-4 s.n. Inyo Rock Creek Lake Basin. 3262 Comment
  POM256933  Festuca minutiflora F. W. Peirson 1934-7-23 s.n. Inyo Rock Creek Lake Basin, east side of canyon 3262 Comment
  POM257970  Poa pringlei F. W. Peirson 1934-7-27 s.n. Inyo Among rocks in gorge below Mono Pass, Rock Creek Lake Basin, northern Inyo County, Alt 11500ft. 3506 Comment
  RSA65051  Silene bernardina F. W. Peirson 1913-8-22 610 Inyo Taboose Pass, Sierra Nevada. Comment
  RSA65375  Atriplex confertifolia F. W. Peirson 1936-4-6 11805 Inyo Divide above Titus Canyon. (near the Nevada state line) Comment
  RSA65520  Arenaria kingii subsp. compacta F. W. Peirson 1929-7-20 8505 Inyo Green Lake Valley, Bishop Creek region, Sierra Nevada 3293 Comment
  RSA65976  Eriogonum nudum var. westonii F. W. Peirson 1913-8-22 1758 Inyo Taboose Pass, Sierra Nevada. Comment
  RSA66117  Draba breweri var. cana F. W. Peirson 1951-7-21 13523 Inyo Escarpment above Heart Lake, Rock Creek Lake Basin 3232 Comment
  RSA66137  Draba lemmonii F. W. Peirson 1934-7-27 11325 Inyo Sloping gravelley plain above Mono Pass, Rock Creek Lake Basin. 3735 Comment
  RSA66139  Draba sierrae F. W. Peirson 1933-8-9 10864 Inyo Rock Creek Lake Basin: recess on east slope 3476 Comment
  RSA66202  Boechera repanda F. W. Peirson 1933-8-8 10768 Inyo West of Heart Lake, Rock Creek Lake Basin 3506 Comment
  RSA66734  Lepidium lasiocarpum F. W. Peirson 1930-4-15 8720 Inyo Near Amargosa River 9 miles south of Shoshone. Comment
  RSA67130  Galium hypotrichium subsp. hypotrichium F. W. Peirson 1929-7-24 8546 Inyo along the summit area, Inconsolable Range. 3582 Comment
  RSA67351  Lepidium fremontii F. W. Peirson 1936-4-7 s.n. Inyo Darwin Falls. Comment
  RSA68705  Lilium kelleyanum Frank W. Peirson 1933-8-13 10796 Inyo Heart Lake Meadow, Rock Creek Lake Basin, Sierra Nevada. 3232 Comment
  RSA69737  Luzula orestera F. W. Peirson 1940-8-1 12966 Inyo Long Lake and stream valleys southward, Rock Creek Lake Basin. 3262 Comment
  RSA70571  Vaccinium cespitosum F. W. Peirson 1933-8-12 10805 Inyo Glacial Lakes at foot of Mt. Dade, Rock Creek Lake Basin, northern Inyo County. 3387 Comment
  RSA73072  Linanthus demissus F. W. Peirson 1928-4-2 7783 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA73113  Navarretia breweri F. W. Peirson 1911-8-8 927 Inyo In vicinity of Horseshoe Meadow, Cottonwood Creek, east side of 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
  RSA77495  Angelica lineariloba F. W. Peirson 1913-8-22 2310 Inyo Taboose Pass, Sierra Nevada. Comment
  RSA78491  Salix arctica F. W. Peirson 1940-8-2 13533 Inyo Below Ruby Lake, Rock Creek Lake Basin. 3506 Comment
  RSA78496  Ephedra nevadensis F. W. Peirson 1946-4-19 13538 Inyo Titus Canyon, Death Valley. Comment
  RSA78530  Carex proposita F. W. Peirson 1933-8-15 13586 Inyo Above Ruby Lake, Rock Creek Lake Basin, in S Mono County. Comment
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Jul 2 2011
  RSA78552  Carex proposita F. W. Peirson 1940-8-16 13556 Inyo Rock Creek Lake Basin, Sierra Nevada 3293 Comment
  RSA78631  Salix arctica F. W. Peirson 1933-8-21 13528 Inyo Plateau Meadow, near Ruby Lake, Rock Creek Lake Basin. Comment
  RSA79792  Cryptantha confertiflora F. W. Peirson 1932-5-8 9935 Inyo Wild Rose Canyon, Panamint Mts. 1829 Comment
  RSA79841  Penstemon monoensis F. W. Peirson 1932-5-6 9887 Inyo 2 miles west of Darwin. 1433 Comment
  RSA79862  Keckiella rothrockii subsp. rothrockii F. W. Peirson 1927-7-24 7546 Inyo West slope of Westgarf Pass, White Mountains. Comment
  RSA80404  Mimulus nanus var. mephiticus F. W. Peirson 1911-8-8 1139 Inyo Cottonwood Creek, Sierra Nevada. Comment
  RSA80471  Mimulus leptaleus F. W. Peirson 1931-7-31 9489 Inyo Below Heart Lake, Rock Creek Lake Basin. 3186 Comment
  RSA85741  Potentilla flabellifolia F. W. Peirson 1934-7-29 11290 Inyo Above Ruby Lake, Rock Creek Lake Basin 3506 Comment
  RSA85816  Ivesia muirii F. W. Peirson 1930-8-5 9091 Inyo Summit of Mono Pass 3659 Comment
  RSA86345  Juniperus occidentalis var. australis F. W. Peirson 1931-7-30 9395 Inyo Along Ruby Stream. Rock Creek Lake Basin, at 10,800 ft. 3293 Comment
  RSA86780  Festuca brachyphylla F. W. Peirson 1931-7-22 9405 Inyo Near upper Ruby Stream, Rock Creek Lake Basin 3537 Comment
  RSA86798  Rosa woodsii subsp. gratissima F. W. Peirson 1917-8-3 701 Inyo Onion Valley, east of Kearsarge Pass, Sierra Nevada. 2683 Comment
  RSA87129  Trisetum spicatum F. W. Peirson 1931-7-20 9403 Inyo Ruby Falls, Rock Creek Lake Basin, east slope of Sierra Nevada. 3323 Comment
  RSA87462  Elymus trachycaulus subsp. trachycaulus F. W. Peirson 1933-8-7 10866 Inyo Long Lake, Rock Creek Lake Basin, northern Inyo County. 3247 Comment
  RSA88665  Carex illota F. W. Peirson 1933-8-4 10831 Inyo South of Long Lake, Rock Creek Lake Basin. 3262 Comment
  RSA88686  Carex pellita F. W. Peirson 1929-7-19 8481 Inyo Bishop Creek at South Lake 3018 Comment
  RSA88782  Carex scopulorum var. bracteosa F. W. Peirson 1929-7-19 8479 Inyo Bishop Creek at South Lake 3018 Comment
  RSA97381  Lomatium nevadense F. W. Peirson 1932-5-7 9911 Inyo North fork of Hanaupah Canyon, Panamint Mountains. 2134 Comment
  SBBG28979  Erythranthe breweri F. W. Peirson 1940-8-10 12963 Inyo Ruby Lake, above Rock Crk Lake 3398 Comment
  SBBG54412  Juncus parryi F. W. Peirson 1933-8-4 Inyo Rock Crk Lake Basin, S of Long Lake 3352 Comment
  SD87579  Boechera lemmonii Frank W. Peirson 1934-7-27 11299 Inyo Rock Creek Lake Basin, Gorge below Mono Pass 3630 Comment
  SD87683  Erigeron clokeyi Frank W Peirson 1931-8-2 Inyo Rock Creek Lake Basin, west of Heart Lake 3290 Comment
  SD87761  Boechera lyallii Frank W. Peirson 1934-7-21 11295 Inyo Rock Creek Lake Basin. 3445 Comment
  SD87817  Ivesia lycopodioides Frank W. Peirson 1940-8-10 12961 Inyo Rock Creek Lake Basin, on the delta at the inlet of Ryby Lake 3398 Comment
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May 31 2012
  SEINET179666  Agrostis lepida Frank W. Peirson 1933-8-11 Inyo Rock Creek Lake Basin, meadow at Heart Lake 3200 Comment
  UC1026431  Carex pellita F. W. Peirson 1940-8-17 13561 Inyo Heart Lake Meadow Rock Creek Lake Basin 3200 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
  UC501452  Brickellia atractyloides Frank W. Peirson 1932-5-6 9896 Inyo 8 mi e of Darwin 1219 Comment
  UC511760  Ribes inerme var. inerme Frank W. Peirson 1933-8-13 Inyo along the Escarpment w Heart Lake Meadow; Rock Creek Lake Basin 3230 Comment
  UC511795  Rorippa palustris Frank W. Peirson 1933-7-28 10709 Inyo Rock Creek 1371 Comment
  UC511820  Crepis acuminata Frank W. Peirson 1933-8-7 Inyo Long Lake Rock Creek Lake Basin (w shore) 3261 Comment
  UC511849  Thalictrum sparsiflorum Frank W. Peirson 1933-8-19 Inyo near Ruby Falls; Rock Creek Lake Basin 3322 Comment
  UC511851  Antennaria media Frank W. Peirson 1933-8-15 10796 Inyo gorge below Mono Pass; Rock Cr. Lake Basin 3505 Comment
  UC511856  Trichophorum clementis Frank W. Peirson 1933-8-10 10766 Inyo along stream below Ruby Lake; Rock Creek Lake Basin, below Ruby Lake 3352 Comment
  UC511865  Saxifraga aprica Frank W. Peirson 1933-8-5 Inyo upper end of Hidden Lake Valley; Rock Creek Lake Basin, Hidden Lake Valley 3291 Comment
  UC511886  Poa secunda subsp. secunda Frank W. Peirson 1933-8-5 10827 Inyo Hear Lake Meadow Rock Creek Lake Basin 3200 Comment
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May 31 2012
  UC511888  Trisetum spicatum Frank W. Peirson 1933-8-3 10871 Inyo Heart Lake Rock Creek Lake Basin (meadow) 3200 Comment
  UC511890  Erigeron clokeyi var. pinzliae Frank W. Peirson 1933-8-5 10787 Inyo Rock Cr. Lake Basin 3291 Comment
  UC643205  Draba albertina Frank W. Peirson 1940-8-9 12948 Inyo e side canyon (Rock Creek Lake Basin); Rock Creek Lake Basin 3291 Comment
  UC643229  Hulsea algida Frank W. Peirson 1940-8-9 Inyo on e side of canyon Rock Creek Lake Basin 3307 Comment
  UC643235  Juncus parryi Frank W. Peirson 1940-8-16 Inyo Rock Creek Lake Basin, at foot of e wall of canyon Rock Creek Lake Basin 3291 Comment
  UC672286  Dieteria canescens var. canescens Frank W. Peirson 1921-8-6 2526 Inyo trail out of Big Pine to Baker Creek 3124 Comment
  UC672288  Symphyotrichum bracteolatum Frank W. Peirson 1919-8-2 1268 Inyo Grats, Kearsarge Pass Kearsarge Pass 1828 Comment
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Apr 9 2012
  UC908866  Gilia scopulorum Frank W. Peirson 1928-4-2 7801 Inyo near Bradbury Well; Death Valley Region, near Bradbury Well Comment
  UCD66401  Festuca saximontana var. purpusiana F. W. Peirson 1934-7-27 Inyo Rock Creek Lake Basin. In the Mono Gorge below Mono Pass. 3627 Comment
  UCD92944  Ptilagrostis kingii F. W. Peirson 1940-8-8 12939 Inyo Rock Creek Lake Basin. Border of Heart Lake Meadow. 3230 Comment
  UCD93742  Trisetum spicatum F. W. Peirson 1933-8-8 s.n. Inyo Rock Creek Lake Basin, west of Heart Lake. 3352 Comment
  UCR136633  Salvia funerea F. W. Peirson 1932-5-8 9940 Inyo Funeral Mountains, Hole-in-the-Rock Spring, Boundary Canyon, slopes along trail to spring 945 Comment
  CAS-BOT-BC110798  Juncus mertensianus Frank W. Peirson 1939-8-7 12783 Inyo Rock Creek Lake Basin. In the main gorge south of Long Lake. 3322 Comment
  CAS-BOT-BC119626  Carex nigricans Frank Warrington Peirson 1935-7-17 11704 Inyo Rock Creek Lake Basin, dryish meadows near the Morgan Pass lakes. Comment
  CAS-BOT-BC205469  Lupinus excubitus var. excubitus Frank W. Peirson 1932-5-5 9880 Inyo Lone Pine Canyon 1310 Comment
  CAS-BOT-BC20629  Carex douglasii Frank W. Peirson 1937-8-8 12212 Inyo Rock Creek Lake basin. Heart Lake region. 3215 Comment
  CAS-BOT-BC20930  Carex heteroneura Frank W. Peirson 1933-8-11 10842 Inyo Rock Creek Lake Basin. Meadows along the East Chain of Lakes. 3200 Comment
  CAS-BOT-BC276567  Chaenactis douglasii var. douglasii F. W. Peirson 1921-8-6 2709 Inyo Trail N out of Big Pine Creek, Sierra Nevada 3048 Comment
  JEPS3409  Castilleja parviflora Frank W. Peirson 1931-7-18 9078 Inyo shores of Chickenfoot Lake Chickenfoot Lake; Rock Creek Lake Basin 3276 Comment
  PASA1899  Epilobium obcordatum Frank W. Peirson 1930-8-5 Inyo Rock Creek Lake Basin 3505 Comment
  PASA2189  Chaenactis douglasii Frank W. Peirson 1921-8-6 Inyo Trail north from Big Pine Creek 3047 Comment
  POM171931  Gayophytum diffusum subsp. parviflorum F. W. Peirson 1930-8-7 9127 Inyo Rock Creek Lake Basin, Sierra Nevada 3399 Comment
  POM203876  Phacelia frigida subsp. dasyphylla F. W. Peirson 1934-7-22 s.n. Inyo Upper Glacial Lake, Rock Creek Lake Basin, northern Inyo County. 3384 Comment
  POM257990  Carex nebrascensis F. W. Peirson 1937-8-6 s.n. Inyo Rock Creek Lake Basin. Lowest lake on east side at south base of the Transverse Ridge. 3216 Comment
  POM91446  Psorothamnus polydenius F. W. Peirson 1938-7-8 12417 Inyo 14 mi. N of Independence, Inyo Co. Comment
  RSA0005760  Galium munzii var. subalpinum F. W. Peirson 1919-7-27 1189 Inyo Sawmill Creek, east slope of Sierra Nevada. 2957 Comment
  RSA0062923  Heuchera rubescens var. alpicola F. W. Peirson 1930-8-3 9060 Inyo West of Heart Lake, Rock Creek Lake Basin. 3232 Comment
  RSA0063233  Heuchera rubescens var. alpicola F. W. Peirson 1939-8-6 12777 Inyo Among rocks along west shore of Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA0066486  Phlox caespitosa F. W. Peirson 1935-7-17 11519 Inyo Shores of Long Lake, Rock Creek Lake Basin; Sierra Nevada. 3262 Comment
  RSA0077928  Orobanche corymbosa subsp. corymbosa Frank W. Peirson 1938-7-8 12423 Inyo Sherwin Grade, north of Bishop. Comment
  RSA0101659  Botrychium simplex var. compositum F. W. Peirson 1939-8-6 12991 Inyo Along west shore of Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA0107778  Eriastrum densifolium subsp. elongatum F. W. Peirson 1917-8-1 933 Inyo Independence, Owens Valley. Comment
  RSA0124952  Senecio integerrimus var. exaltatus F. W. Peirson 1937-8-2 12174 Inyo Along stream south of Long Lake, Rock Creek Lake Basin, Sierra Nevada. 3277 Comment
  RSA0125050  Senecio integerrimus var. exaltatus F. W. Peirson 1930-8-3 9050 Inyo On margin of Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA0129587  Arabis lemmonii var. depauperata F. W. Peirson 1921-8-19 2536 Inyo Taboose Pass, Sierra Nevada. 1982 Comment
  RSA64904  Oxyria digyna F. W. Peirson 1930-8-4 9080 Inyo Upper Rock Creek Lake Basin, Sierra Nevada 3323 Comment
  RSA65100  Eriogonum ovalifolium var. nivale F. W. Peirson 1917-8-20 1750 Inyo Green Lake, Sierra Nevada. Comment
  RSA65381  Atriplex parryi F. W. Peirson 1917-8-1 s.n. Inyo A mile or two north of Lone Pine, Owens Valley Comment
  RSA65416  Cistanthe umbellata var. umbellata F. W. Peirson 1921-8-6 2621 Inyo Coyote Creek meadows, Sierra Nevada 3049 Comment
  RSA65736  Montia linearis F. W. Peirson 1911-1 602 Inyo Sierra Nevada Comment
  RSA65872  Polygonum kelloggii F. W. Peirson 1931-7-22 9433 Inyo South end of Box Lake, Rock Creek Lake Basin. 3216 Comment
  RSA66583  Lesquerella kingii F. W. Peirson 1932-5-8 9932 Inyo Wild Rose Canyon, Panamint Mountains. 2439 Comment
  RSA69437  Frasera puberulenta F. W. Peirson 1914-8-20 871 Inyo North Fork of Bishop Creek, Sierra Nevada. 3354 Comment
  RSA70076  Platanthera leucostachys Frank W. Peirson 1931-7-22 9426 Inyo North shore of Long Lake, Rock Creek Lake Basin, Sierra Nevada. 3247 Comment
  RSA70513  Geranium richardsonii F. W. Peirson 1930-8-3 9070 Inyo Northwest of Heart Lake, Rock Creek Lake Basin 3201 Comment
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Apr 16 2015
  RSA70578  Sisyrinchium idahoense Frank W. Peirson 1934-7-25 11282 Inyo West side of Long Lake, Rock Creek Lake Basin. 3277 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
  RSA72013  Phlox covillei F. W. Peirson 1937-8-6 12182 Inyo Along the borders of the Grass Bog on the east side of Rock Creek Lake Basin. 3293 Comment
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Jul 1 2013
  RSA72033  Polemonium occidentale F. W. Peirson 1930-8-8 9141 Inyo East of Heart Lake, Rock Creek Lake Basin 3201 Comment
  RSA72159  Epilobium hornemannii subsp. hornemannii F. W. Peirson 1931-7-30 s.n. Inyo South of Ruby falls. . Rock Creek Lake Basin. 3323 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
  RSA74707  Phacelia saxicola F. W. Peirson 1938-7-8 12418 Inyo Sherwin Grade, north of Bishop. 1890 Comment
  RSA74849  Phacelia frigida subsp. dasyphylla F. W. Peirson 1940-8-15 12955 Inyo Heart Lake, Rock Creek Lake Basin, Sierra Nevada. 3476 Comment
  RSA74851  Phacelia frigida subsp. dasyphylla F. W. Peirson 1929-7-24 8551 Inyo S of Green lake, Bishop Creek Region, Sierra Nevada 3476 Comment
  RSA75357  Phacelia fremontii F. W. Peirson 1932-5-9 9944 Inyo Near Keane Spring, Funeral Mountains. 1250 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
  RSA78500  Carex abrupta F. W. Peirson 1940-8-17 13570 Inyo Heart Lake Meadow, Rock Creek Lake Basin. northern Inyo County. 3232 Comment
  RSA78638  Castilleja angustifolia F. W. Peirson 1946-4-20 13541 Inyo Gray's Camp. Comment
  RSA79857  Penstemon speciosus F. W. Peirson 8496 Inyo Trail from South Lake to Green Lake, Bishop Creek. 3262 Comment
  RSA80084  Mimulus tilingii F. W. Peirson 1931-7-22 9491 Inyo margin of stream in upper Ruby Creek, Rock Creek Lake Basin. 3598 Comment
  RSA80212  Plagiobothrys hispidus F. W. Peirson 1917-8-20 5212 Inyo South Fork of Bishop Creek east slope of Sierra Nevada 2439 Comment
  RSA84603  Heuchera rubescens var. rydbergiana F. W. Peirson 1931-7-24 9462 Inyo west side of Long Lake, Rock Creek Lake Basin. 3277 Comment
  RSA84863  Ranunculus eschscholtzii F. W. Peirson 1929-7-21 8522 Inyo Below unnamed lake, canyon south of South Lake, Bishop Creek. 3201 Comment
  RSA86796  Rosa woodsii subsp. gratissima F. W. Peirson 1919-8-2 700 Inyo Along Owens River, 2 miles N of Lone Pine. Comment
  RSA88745  Carex aurea F. W. Peirson 1930-8-8 9152 Inyo East of Heart Lake, Rock Creek Lake Basin 3201 Comment
  RSA88769  Carex exserta F. W. Peirson 1933-8-3 10830 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3201 Comment
  RSA90203  Bromus marginatus F. W. Peirson 1939-8-3 12769 Inyo Heart Lake Meadow; Rock Creek Lake Basin, northern Inyo County 3232 Comment
  RSA90204  Bromus marginatus F. W. Peirson 1931-7-30 9407 Inyo Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA90242  Astragalus layneae F. W. Peirson 1932-5-6 9886 Inyo 2 miles west of Darwin. 1433 Comment
  RSA90266  Agrostis variabilis F. W. Peirson 1930-8-10 91970 Inyo In cirque at foot of Mt. Dade, Rock Creek Lake Basin, Sierra Nevada, extreme northern Inyo County. Alt. 11,900 ft. 3628 Comment
  RSA90428  Oxytropis borealis var. viscida F. W. Peirson 1929-7-24 8547 Inyo Along summit ridge of Inconsolable Range 3582 Comment
  RSA90861  Carex subnigricans F. W. Peirson 1937-8-3 12208 Inyo Chickenfoot Lake, Rock Creek Lake Basin. 3293 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
  RSA91403  Trifolium andersonii subsp. monoense F. W. Peirson 1914-8-4 550 Inyo Coyote Creek. 3049 Comment
  RSA91434  Psorothamnus polydenius F. W. Peirson 1913-1 569 Inyo Owens Valley. Comment
  RSA91624  Trisetum spicatum F. W. Peirson 1930-8-5 9103 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin, northern Inyo County. Comment
  RSA91646  Carex vernacula F. W. Peirson 1933-8-12 10846 Inyo Second Glacial Lake at foot of Mt. Dade, Rock Creek Lake Basin, northern Inyo County. 3384 Comment
  RSA91657  Carex nigricans F. W. Peirson 1933-8-12 10847 Inyo Second Glacial Lake at foot of Mt. Dade, Rock Creek Lake Basin, northern Inyo County. 3384 Comment
  RSA91687  Bromus suksdorfii F. W. Peirson 1933-8-15 10824 Inyo Near Ruby Falls, Rock Creek Lake Basin, northern Inyo County. 3323 Comment
  RSA91821  Achnatherum occidentale subsp. occidentale F. W. Peirson 1940-8-6 12940 Inyo Rock Creek Lake Basin 3323 Comment
  RSA91918  Poa secunda F. W. Peirson 1933-8-19 10826 Inyo Rock Creek Lake Basin. Top of Escarpment near Heart Lake 3262 Comment
  RSA91936  Poa secunda F. W. Peirson 1940-8-6 12937 Inyo Mountain slope west of Heart Lake, Rock Creek Lake Basin 3293 Comment
  RSA91964  Elymus elymoides F. W. Peirson 1931-7-26 9409 Inyo Valley south of Long Lake, Rock Creek Lake Basin. 3262 Comment
  RSA92149  Eleocharis quinqueflora F. W. Peirson 1930-8-8 9146 Inyo East of Heart Lake, Rock Creek Lake Basin 3201 Comment
  RSA92330  Poa keckii F. W. Peirson 1940-8-16 12938 Inyo Rock Creek Lake Basin, Sierra Nevada 3293 Comment
  RSA92443  Poa cusickii subsp. cusickii F. W. Peirson 1933-8-6 10816 Inyo Eastward from Long Lake, Rock Creek Lake Basin, eastern slope of Sierra Nevada, northern Inyo County. 3262 Comment
  RSA92508A  Stylocline micropoides F. W. Peirson 1928-4-2 7792 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA92611  Salix planifolia F. W. Peirson 1940-8-9 12951 Inyo Rock Creek Lake Basin, east side above Second Lake. 3232 Comment
  RSA92636  Salix planifolia F. W. Peirson 1931-8-2 9427 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
  RSA92692  Salix exigua F. W. Peirson 1932-5-6 9900 Inyo Wild Rose Canyon, Panamint Mts. 1143 Comment
  RSA93047  Erigeron peregrinus subsp. callianthemus F. W. Peirson 1929-7-20 8492 Inyo Trail from South Lake to Green Lake, Sierra Nevada 3171 Comment
  RSA93088  Erigeron clokeyi var. pinzliae F. W. Peirson 1933-8-5 10787 Inyo soil pockets on Transverse Ridge, Rock Creek Lake Basin 3293 Comment
  RSA93090  Erigeron clokeyi var. pinzliae F. W. Peirson 1921-8-18 2760 Inyo Taboose Pass, Sierra Nevada 3201 Comment
  RSA93182  Machaeranthera canescens F. W. Peirson 1913-8-22 1275 Inyo Taboose Pass, Sierra Nevada. Comment
  RSA93223  Tonestus peirsonii F. W. Peirson 1919-8-27 1404 Inyo Sawmill Canyon east slope of Sierra Nevada. 2957 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
  RSA93644  Antennaria rosea F. W. Peirson 1930-8-8 9139 Inyo West of Heart Lake, foot of rock parapet, northern Inyo County 3232 Comment
  RSA93650  Antennaria media F. W. Peirson 1934-7-21 11320 Inyo on east slope of Rock Creek Lake Basin, northern Inyo [Co.]. 3451 Comment
  RSA93722  Ageratina occidentalis F. W. Peirson 1930-8-8 9138 Inyo West of Heart Lake, Rock Creek Lake Basin 3232 Comment
  RSA93736  Amphipappus fremontii F. W. Peirson 1928-4-2 7784 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA93792  Aster eatonii F. W. Peirson 1919-8-2 1268 Inyo Gray's on Kearsarge Trail, Sierra Nevada 1829 Comment
  RSA94586  Achillea millefolium F. W. Peirson 1939-8-3 12770 Inyo Near south end of Long Lake, Rock Creek Lake Basin, Northern Inyo Co. 3262 Comment
  RSA94696  Senecio werneriifolius F. W. Peirson 1940-8-10 12984 Inyo Rock slide near intake of Ruby Lake, Rock Creek Lake Basin, northern Inyo County 3399 Comment
  RSA94698  Senecio werneriifolius F. W. Peirson 1930-8-5 9098 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3598 Comment
  RSA94859  Arnica mollis F. W. Peirson 1937-8-5 12178 Inyo Southward from below Ruby Falls, Rock Creek Lake Basin. 3293 Comment
  RSA94862  Arnica amplexicaulis F. W. Peirson 1940-9-11 13000 Inyo Along stream at foot of Ruby Falls, Rock Creek Lake Basin 3323 Comment
  RSA94872  Arnica chamissonis subsp. foliosa F. W. Peirson 1921-8-5 22571 Inyo Big Pine Creek, east slope of Sierra Nevada. 2744 Comment
  RSA94887  Arnica chamissonis subsp. foliosa F. W. Peirson 1940-8-4 12980 Inyo Near the second enchelon lake near Transverse Ridge Rock Creek Lake Basin 3262 Comment
  RSA94903  Cirsium arizonicum F. W. Peirson 1914-1 s.n. Inyo Big Pine creek, E slope of Sierra Nevada Comment
  RSA94966  Malacothrix glabrata F. W. Peirson 1928-4-2 7777 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA95152  Crepis nana subsp. ramosa F. W. Peirson 1919-8-6 1496 Inyo Loose rock slide in defilet not far below summit of Jct Pass, Sierra Nevada. 3963 Comment
  RSA99357  Symphoricarpos vaccinioides F. W. Peirson 1929-7-19 8487 Inyo Bishop Creek at South Lake. 3018 Comment
  SD87563  Carex rossii Frank W. Peirson 1937-8-7 12211 Inyo Rock Creek Lake Basin; growing about low bushes on grassy slope in southwest part of basin. Comment
  SEINET7552946 Image available Carex breweri Frank W. Peirson 1934-7-22 s.n. Inyo Rock Creek Lake Basin. 3383 Comment
  SEINET7575690 Image available Carex specifica Frank W. Peirson 1933-8-13 10849 Inyo Rock Creek Lake Basin. 3200 Comment
  SEINET7576424 Image available Carex straminiformis Frank W. Peirson 1933-8-5 10844 Inyo Rock Creek Lake Basin. 3322 Comment
  UC511847  Phacelia hastata subsp. compacta Frank W. Peirson 1933-8-15 Inyo gravel slides above Ruby Lake; Rock Creek Lake Basin 3413 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
  UC511881  Gayophytum diffusum subsp. parviflorum Frank W. Peirson 1933-8-21 Inyo Ruby Lake Rock Creek Lake Basin 3398 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-BC159093  Phacelia ramosissima var. latifolia Frank W. Peirson 1927-5-28 7304 Kern Kern River Road, 16 miles from Bakersfield 457 Comment
  CAS-BOT-BC16346  Athysanus unilateralis Frank W. Peirson 1925-3-19 5482 Kern North slope Tehachapi Pass. 609 Comment
  CAS-BOT-BC225673  Leptosiphon serrulatus F. W. Peirson 1930-5-15 8888 Kern Hills near Glennville, Greenhorn Range 1036 Comment
  CAS-BOT-BC246370  Chorizanthe spinosa Frank W. Peirson 1927-5-7 7274 Kern 3 miles south of Muroc Comment
  CAS-BOT-BC77602  Peritoma arborea var. globosa Frank W. Peirson 1925-3-19 5503 Kern North slope Tehachapi Pass 457 Comment
  JEPS51896  Chamaesyce vallis-mortae Frank W. Peirson 1927-5-29 7334 Kern Red Rock Canyon Comment
  PASA2187  Chaenactis carphoclinia var. attenuata Frank W. Peirson 1930-5-13 Kern Red Rock Canyon 883 Comment
  PASA2200  Chaenactis xantiana Frank W. Peirson 1930-5-14 Kern Greenhorn Range, east slope 1462 Comment
  PASA2735  Astragalus lentiginosus var. nigricalycis Frank W. Peirson 1925-3-18 5496 Kern North slope Tehachapi Pass, 761 Comment
  PASA337  Scorzonella sylvatica Frank W. Peirson 1930-5-15 Kern Hills SE. of Glenville, Greenhorn Mts. Comment
  PASA960  Tetradymia glabrata Frank W. Peirson 1930-5-13 Kern Red Rock Canyon 883 Comment
  POM212879  Phacelia douglasii var. petrophila F. W. Peirson 1935-3-16 11403 Kern Mojave Desert, 1-2 miles N of the Grapevine Grade. Comment
  RSA100256  Plectritis ciliosa subsp. insignis F. W. Peirson 1925-3-19 5501 Kern North slope of Tehachapi Mountains. 457 Comment
  RSA175557  Nemophila maculata F. W. Peirson 1930-5-14 8866 Kern Greenhorn Range on road from Kernville to Glenville 1677 Comment
  RSA65081  Eriogonum gracillimum F. W. Peirson 1930-5-13 8804 Kern Red Rock Canyon. 884 Comment
  RSA65257  Chorizanthe spinosa F. W. Peirson 1927-5-29 7336 Kern Red Rock Canyon, west end of Mojave Desert. 762 Comment
  RSA66244  Platystemon californicus F. W. Peirson 1925-3-19 5500 Kern North slope of Tehachapi Mountains. 457 Comment
  RSA66291  Dicentra chrysantha F. W. Peirson 1930-5-13 8832 Kern Island in Kern River. 845 Comment
  RSA69559  Mentzelia eremophila F. W. Peirson 1930-5-13 8809 Kern Red Rock Canyon. 884 Comment
  RSA69888  Fraxinus latifolia F. W. Peirson 1927-5-29 7323 Kern Kern River, just south of Tulare-Kern Co. line. 845 Comment
  RSA70146  Triteleia ixioides subsp. scabra F. W. Peirson 1930-5-15 8874 Kern Greenhorn Range, hills southeast of Glennville 1006 Comment
  RSA70193  Allium denticulatum F. W. Peirson 1927-5-29 7328 Kern Just below the summit on west slope of Walker Pass 1585 Comment
  RSA70333  Asclepias cordifolia F. W. Peirson 1927-5-28 7312 Kern Kern River road, 22 miles from Bakersfield 610 Comment
  RSA70376  Chamaesyce vallis-mortae F. W. Peirson 1927-5-29 7334 Kern Red Rock Canyon, W Mojave Desert. Comment
  RSA71108  Calystegia longipes F. W. Peirson 1927-5-28 7303 Kern Bank between road and Kern River, 15 miles from Bakersfield. 457 Comment
  RSA71883  Gilia leptantha subsp. purpusii F. W. Peirson 1908-7-11 127 Kern Little Kern River, Southern Sierra Nevada. Comment
  RSA72157  Gayophytum eriospermum F. W. Peirson 1933-7-9 10694 Kern 2 miles south of Summit Camp, Greenhorn Mountains. 2073 Comment
  RSA73024  Linanthus parryae F. W. Peirson 1928-4-4 7827 Kern 11 miles north of Johannesburg Comment
  RSA73346  Clarkia xantiana F. W. Peirson 1933-7-9 10680 Kern About 6 miles from Caliente on road to Bodfish. Comment
  RSA80315  Orthocarpus linearilobus F. W. Peirson 1930-5-15 8878 Kern Greenhorn Range, hills southeast of [Glenville]. 1067 Comment
  RSA87309  Lupinus chamissonis F. W. Peirson 1930-5-13 8829 Kern Near Kern River. 845 Comment
  SD87526  Leptosiphon montanus Frank W. Peirson 1930-5-15 8896 Kern Greenhorn Range. 1067 Comment
  UC501482  Camissonia kernensis subsp. kernensis Frank W. Peirson 1932-5-5 9960 Kern e slope Walker Pass (Type loc.) 1371 Comment
  UC501620  Calochortus amoenus Frank W. Peirson 1930-5-15 8876 Kern se of Glenville; Greenhorn Range 1066 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
  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
  UC908203  Gilia minor Frank W. Peirson 1928-4-4 7829 Kern Randsburg to Mohave 15 mi from former; Randsburg to Mohave, 15 mi from former Comment
  POM212877  Guillenia lasiophylla F. W. Peirson 1935-3-16 11404 Kern 5 miles N of foot of Grapevine Grade. Comment
  RSA53113  Caulanthus cooperi F. W. Peirson 1935-3-16 11408 Kern South slope of Tehachapi Range and 4 miles north of Mojave Comment
  RSA64588  Eriogonum pusillum F. W. Peirson 1928-4-4 7831 Kern Road Randsburg to Mojave and 15 miles from the former Comment
  RSA65556  Minuartia californica Mabel Peirson 1935-3-16 11407 Kern North side of Tehachapi Range, along the Arvin cut-off. Comment
  RSA66243  Platystemon californicus Mabel Peirson 1933-6-4 10668 Kern Greenhorn Mts, near Glendale. Comment
  RSA66529  Athysanus pusillus F. W. Peirson 1925-3-19 5481 Kern North slope of Tehachapi Pass. 610 Comment
  RSA66821  Caulanthus cooperi F. W. Peirson 1935-3-16 11408 Kern South slope of Tehachapi Range and 4 miles north of Mojave Comment
  RSA69977  Abronia pogonantha F. W. Peirson 1925-3-19 5511 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA73684  Leptosiphon bicolor F. W. Peirson 1925-3-19 5508 Kern North slope of Tehachapi Mountains. 457 Comment
Read comments
Mar 27 2011
  RSA75524  Phacelia fremontii F. W. Peirson, R. C. Barneby 1925-3-18 5474 Kern S slopes of Tehachapi Mts 610 Comment
  RSA83943  Ranunculus canus var. ludovicianus F. W. Peirson 1925-3-18 5476 Kern summit of Tehachapi Pass Comment
  RSA90077  Lotus argophyllus subsp. decorus F. W. Peirson 1930-5-15 8840 Kern Island in Kern River Comment
Read comments
Jan 7 2014
  RSA92233  Madia minima F. W. Peirson 1908-7-12 1345 Kern Lower Kern Lake, Kern River Canyon 1890 Comment
  RSA92498  Ancistrocarphus filagineus F. W. Peirson 1930-5-14 8858 Kern On road from Kernville to Glenville, Greenhorn Range 1601 Comment
  RSA92923  Lasthenia minor F. W. Peirson 1925-3-20 5538 Kern In fields 18 miles N of Bakersfield. Comment
  RSA92993  Lasthenia debilis F. W. Peirson 1930-5-15 8883 Kern Greenhorn Range, SE of Glenville. 915 Comment
  RSA94547  Packera breweri F. W. Peirson 1930-5-15 8873 Kern Greenhorn Range, hills southeast of Glennville 1006 Comment
  RSA94961  Malacothrix clevelandii F. W. Peirson 1930-5-13 8835 Kern Kern River 845 Comment
  RSA97262  Lomatium vaginatum F. W. Peirson 1925-3-18 s.n. Kern Tehachapi Pass. Comment
  PASA2034  Lepidium dictyotum Frank W. Peirson 1925-3-23 Kings 6 miles west of Lemoore Comment
  CAS-BOT-BC24789  Arctostaphylos glandulosa subsp. glandulosa Frank W. Peirson 1926-4-2 6572 Lake Summit Hopland Grade. Comment
  HSC24629  Dodecatheon hendersonii F. W. Peirson 1926-4-2 6573 Lake Grade down to Clear Lake, Hopland Rd. Comment
  HSC2963  Allium fimbriatum var. fimbriatum F. W. Peirson, Mabel Peirson 1926-4-3 6618 Lake S face of hill 3.3 mi. N of Middletown Comment
  PASA151  Orthocarpus erianthus Frank W. Peirson 1926-4-2 Lake Clear Lake, West end of lake in damp adobe field Comment
  POM89883  Allium fimbriatum var. fimbriatum F. W. Peirson 1926-4-3 6618 Lake 3.3 miles north of Middletown. Comment
  POM89884  Allium falcifolium F. W. Peirson 1926-4-3 6617 Lake 3.3 miles north of Middletown. Comment
  RSA68740  Erythronium californicum Frank W. Peirson, Mabel B. Peirson 1926-4-2 6574 Lake Grade down to Clear Lake, on Hopland Road Comment
  RSA70194  Allium falcifolium F. W. Peirson, Mabel Peirson 1926-4-3 6617 Lake 3.3 miles north of Middletown. Comment
  RSA80413  Plagiobothrys nothofulvus F. W. Peirson 1926-4-2 6590 Lake west end of Clear Lake, Comment
  RSA86868  Prunus subcordata F. W. Peirson 1926-4-2 6599 Lake 5 miles west of Lower Lake on Kelseyville Road Comment
  RSA87201  Lupinus albifrons var. albifrons F. W. Peirson 1926-4-2 6601 Lake Lower Lake Comment
  UC511739  Dodecatheon hendersonii Frank W. Peirson 1926-4-2 6573 Lake grade down to Clear Lake grade down to Clear Lake (Hopland Road) Comment
  POM89919  Orthocarpus attenuatus F. W. Peirson 1926-4-2 6605 Lake Lower Lake. Comment
  RSA0012437  Senecio aronicoides F. W. Peirson, Mabel Peirson 1926-4-2 6597 Lake 5 miles east of Kelseyville on the road to the Lower Lake Comment
  RSA407952  Orthocarpus purpurascens F. W. Peirson 1926-4-2 6606 Lake Lower Lake. Auto camp grounds. Comment
  RSA80298  Orthocarpus erianthus F. W. Peirson, Mabel B. Peirson 1926-4-2 6604 Lake Lower Lake. Comment
  RSA84874  Ranunculus hebecarpus Mabel Peirson 1926-4-2 6603 Lake Hill top back from Lower Lake Comment
  RSA90186  Astragalus breweri F. W. Peirson 1926-4-2 6578 Lake 0.5 miles south of Clear Lake on Hopland Road. Comment
  RSA90885  Carex serratodens F. W. Peirson, Mabel Peirson 1926-4-3 6615 Lake 3.3 mi N of Middletown. Lake County Comment
  RSA92188  Lagophylla ramosissima F. W. Peirson 1925-8-9 6350 Lake 6 miles W of Blue Lakes. Comment
  RSA92204  Lasthenia glabrata subsp. glabrata F. W. Peirson, Mabel Peirson 1926-4-2 6588 Lake West end of Clear Lake. Comment
  CAS-BOT-BC208756  Lupinus argenteus var. heteranthus Frank W. Peirson 1926-6-24 6852 Lassen Madeline Plains Comment
  UC501445  Tetradymia canescens Frank W. Peirson 1932-7-20 10354 Lassen 20 mi se Susanville Comment
  POM98589  Phacelia adenophora F. W. Peirson 1926-6-24 6851 Lassen Madeline Plain. Comment
  RSA70366  Calochortus nudus Frank W. Peirson 1926-6-22 6821 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
  RSA91471  Scirpus microcarpus F. W. Peirson 1926-6-22 6825 Lassen Small meadow above Hot Spring, Drakesbad, Lassen National Park Comment
  CAS-BOT-BC123033  Lessingia lemmonii var. peirsonii Frank Warrington Peirson 1923-6-9 3550 Los Angeles Liebre Mts., at lowest point between the divides of Pine and Oak Grove Canyons 1173 Comment
  CAS-BOT-BC131689  Ericameria cooperi var. cooperi Frank W. Peirson 1921-5-19 1245 Los Angeles Little Rock Cr., San Gabriel Mts. Comment
  CAS-BOT-BC134966  Phoradendron bolleanum F. W. Peirson 1919-5-10 4682 Los Angeles Arrasler, San Gabirel Mts. 853 Comment
  CAS-BOT-BC175149  Silene verecunda Frank W. Peirson 1920-9-15 2284 Los Angeles San Gabriel Mts. Baldy, north slope Comment
  CAS-BOT-BC179821  Centrostegia thurberi Frank W. Peirson 1919-5-10 28 Los Angeles Arraster Creek, San Gabirel Mts. 914 Comment
  CAS-BOT-BC203923  Malacothamnus clementinus Frank W. Peirson 1923-4-9 3458 Los Angeles N. slope canon [canyon] at Lemmon [Lemon] Tank, San Clemente Is. Comment
  CAS-BOT-BC205149  Lupinus elatus Frank W. Peirson 1921-6-16 2438 Los Angeles Waterman Ridge, San Gabriel Mts. 2286 Comment
  CAS-BOT-BC207252  Lupinus peirsonii Frank W. Peirson 1930-5-30 8904 Los Angeles Rock Creek, San Gabriel Mts. 1371 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-BC215332  Lupinus excubitus var. excubitus F. W. Peirson 1924-8-23 5052 Los Angeles San Gabriel River 411 Comment
  CAS-BOT-BC228641  Cryptantha traskiae Frank W. Peirson 1923-4-11 3421 Los Angeles Eagle Ranch, San Clemente Is., on sea bluff 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-BC264997  Eriogonum wrightii var. subscaposum Frank W. Peirson 1928-9-5 8193 Los Angeles Road from Rock Creek to Big Pines, San Gabriel Mts. 1676 Comment
  CAS-BOT-BC341212  Senecio lyonii Frank W. Peirson 1923-4-12 3478 Los Angeles Wilson's Cove, San Clemente Is. Comment
  CAS-BOT-BC376009  Stylocline gnaphaloides F. W. Peirson 1921-6-19 5281 Los Angeles Crystal Lake, San Gabriel Mts. 1676 Comment
  CAS-BOT-BC380176  Layia platyglossa Frank W. Peirson 1923-4-9 3430 Los Angeles San Clemente Island; Wilson's Cove Comment
  JEPS10622  Castilleja exserta subsp. exserta Frank W. Peirson 1919-3-27 334 Los Angeles w of Arroyo Seco; San Gabriel Mountains 457 Comment
  JEPS10828  Orobanche fasciculata Frank W. Peirson 1919-6-7 465 Los Angeles San Gabriel Mountains, Cow Canyon Divide. Comment
  JEPS11020  Mimulus floribundus Frank W. Peirson 1921-6-19 2456 Los Angeles Crystal Lake San Gabriel Mountains 1676 Comment
  JEPS11303  Nuttallanthus texanus Frank W. Peirson 1918-6-12 187 Los Angeles San Gabriel Mountains, Foothills e of Rubio Canyon Rubio Canyon; San Gabriel Mountains 609 Comment
  JEPS1174  Phacelia mohavensis Frank W. Peirson 1922-7-5 3164 Los Angeles 1 mi w Big Pines; San Gabriel Mountains, Mescal Creek region Comment
  JEPS13657  Symphoricarpos mollis Frank W. Peirson 1919-5-18 440 Los Angeles Monrovia Canyon; San Gabriel Mountains 457 Comment
  JEPS13828  Salix lasiolepis Frank W. Peirson 1919-2-9 317 Los Angeles Fish Canyon; San Gabriel Mts., Fish Canyon Comment
Read comments
Dec 10 2014
  JEPS16106  Lomatium dissectum var. multifidum Frank W. Peirson 1922-7-6 3187 Los Angeles San Antonio Mts., Big Pines 2072 Comment
  JEPS1805  Nemophila menziesii var. integrifolia Frank W. Peirson 1918-5-19 166 Los Angeles Millards Canyon , Millards Canyon (San Gabriel Mountains) 609 Comment
  JEPS18579  Brickellia californica Frank W. Peirson 1918-9-7 221 Los Angeles Head of Eaton Creek San Gabriel Mountains, Eaton Creek 1554 Comment
  JEPS19137  Ericameria parishii var. parishii Frank W. Peirson 1918-9-7 225 Los Angeles above Hennigers Toll Road; San Gabriel Mts. Comment
  JEPS19139  Ericameria pinifolia Frank W. Peirson 1918-10-16 268 Los Angeles Pacoima Canyon San Gabriel Mountains, Pacoima Canyon 518 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
  JEPS2172  Phacelia imbricata subsp. patula F. W. Peirson 1918-6-1 164 Los Angeles Eaton Canyon San Gabriel Mts. 670 Comment
  JEPS2415  Heterotheca sessiliflora subsp. fastigiata Frank W. Peirson 1918-10-16 285 Los Angeles Pacoima Canyon San Gabriel Mountains 533 Comment
  JEPS26418  Malacothamnus fasciculatus var. fasciculatus F. W. Peirson 1918-8-16 114 Los Angeles near Toll-house San Antonio Canyon; , San Gabriel Mtns Comment
  JEPS27573  Gayophytum oligospermum Frank W. Peirson 1921-7-3 2483 Los Angeles Vincent Gulch San Gabriel Mountains 1981 Comment
  JEPS31726  Camissonia strigulosa Frank W. Peirson 1919-5-10 405 Los Angeles Arraster Creek San Gabriel Mountains 914 Comment
  JEPS32439  Solidago velutina subsp. californica F. W. Peirson 1918-9-16 230 Los Angeles Mt. San Antonio 1371 Comment
  JEPS34065  Pseudognaphalium stramineum F. W. Peirson 1920-9-17 2241 Los Angeles San Antonio Canyon San Gabriel Mountains, San Antonio Canyon 1341 Comment
  JEPS34717  Eriophyllum confertiflorum var. confertiflorum F. W. Peirson 1918-6-28 239 Los Angeles foot-hills e Rubio Canyon; San Gabriel Mts. 609 Comment
  JEPS35537  Helenium bigelovii F. W. Peirson 1918-7-8 244 Los Angeles nw of North Ontario; San Antonio Canyon 1828 Comment
  JEPS35962  Anisocoma acaulis F. W. Peirson 1921-5-19 1468 Los Angeles Little Rock Creek; San Gabriel Mts. 1036 Comment
  JEPS36265  Agoseris retrorsa F. W. Peirson 1918-6-10 252 Los Angeles San Gabriel Peak 1828 Comment
  JEPS36729  Achyrachaena mollis F. W. Peirson 1921-4-10 1363 Los Angeles foot of San Dimas Canyon; San Gabriel Mts., San Dimas Canyon 426 Comment
  JEPS37115  Lepidospartum latisquamum Frank W. Peirson 1928-9-5 8194 Los Angeles Swartout Valley 2011 Comment
  JEPS37248  Senecio flaccidus var. douglasii F. W. Peirson 1919-6-13 481 Los Angeles Rock Creek San Gabriel Mts. 1325 Comment
  JEPS38027  Quercus agrifolia Frank W. Peirson 1919-4-5 369 Los Angeles Mt. Wilson Toll Road San Gabriel Mountains Comment
  JEPS38088  Tetradymia axillaris var. longispina F. W. Peirson 1921-5-20 1429 Los Angeles Little Rock Creek San Gabriel Mts. 1036 Comment
  JEPS39860  Rumex salicifolius var. salicifolius F. W. Peirson 1918-6-18 29 Los Angeles Lower Rock Creek San Gabriel Mts. 1219 Comment
  JEPS41486  Erigeron foliosus var. foliosus Frank W. Peirson 1918-7-13 231 Los Angeles Santa Anita San Gabriel Mts., Santa Anita 914 Comment
  JEPS41825  Conyza canadensis Frank W. Peirson 1918-10-16 273 Los Angeles Pacoima Canyon San Gabriel Mts., Pacoima Canyon 518 Comment
  JEPS41864  Corethrogyne filaginifolia Frank W. Peirson 1918-8-6 257 Los Angeles Mt. Wilson, Toll Road San Gabriel Mts., Mt. Wilson 883 Comment
  JEPS42402  Ceanothus crassifolius Frank W. Peirson 1919-1-19 302 a Los Angeles foot of Rubio Canyon; San Gabriel Mts., foot of Rubio Canyon 548 Comment
  JEPS42575  Barbarea orthoceras Frank W. Peirson 1922-7-5 3166 Los Angeles Big Pines San Gabriel Mountains, Swartout Valley region (in the Swartout Valley region, n side of San Gabriel Mountains) 2072 Comment
  JEPS42676  Acer macrophyllum Frank W. Peirson 1919-4-5 107 a Los Angeles Old Mt. Wilson trail , Old Mt. Wilson trail (San Gabriel Mountains) 685 Comment
  JEPS44248  Drymocallis cuneifolia var. ewanii Frank W. Peirson 1921-6-18 493 a Los Angeles n slope of Windy Camp San Gabriel Mts., Mt. Islip (Mt. Islip) 2255 Comment
  JEPS44522  Horkelia rydbergii Frank W. Peirson 1923-8-31 4026 Los Angeles San Gabriel Mountains, Big Pines 1859 Comment
  JEPS45766  Elatine brachysperma Frank W. Peirson 1921-6-19 2470 Los Angeles Crystal Lake San Gabriel Mtns Comment
  JEPS4627  Collinsia parryi F. W. Peirson 1918-6-1 193 Los Angeles ne Altadena; San Gabriel Mts., Eaton Canyon 914 Comment
  JEPS46376  Centaurium venustum Frank W. Peirson 1918-6-28 144 Los Angeles Lower Rubio Canyon San Gabriel Mts. 579 Comment
  JEPS49281  Ribes amarum Frank W. Peirson 1919-4-5 316 Los Angeles Toll Road San Gabriel Range 1066 Comment
Read comments
Dec 10 2014
  JEPS49874  Asclepias eriocarpa F. W. Peirson 1918-6-28 148 Los Angeles e of Rubio Canyon; San Gabriel Mts. 609 Comment
  JEPS49900  Dudleya cymosa subsp. pumila Frank W. Peirson 1918-7-7 262 Los Angeles Ontario Ridge San Gabriel Mtns 2590 Comment
  JEPS5093  Asclepias californica Frank W. Peirson 1923-5-26 3541 Los Angeles Rock Creek Divide 2011 Comment
  JEPS51093  Stellaria media Frank W. Peirson 1919-4-19 368 Los Angeles Pacoima Canyon; San Gabriel Mountains 609 Comment
  JEPS51379  Polycarpon tetraphyllum Frank W. Peirson 1931-5-25 9376 Los Angeles Altadena; 1077 New York Avenue. Comment
  JEPS51564  Platystemon californicus Frank W. Peirson 1920-3-28 2103 Los Angeles Tujunga Canyon; San Gabriel Mountains, Tujunga Canyon 457 Comment
  JEPS53159  Boechera repanda Frank W. Peirson 1919-6-14 507 Los Angeles Rock Creek 1706 Comment
  JEPS5362  Eriophyllum pringlei F. W. Peirson 1921-5-19 1386 Los Angeles San Gabriel Mts., Little Rock Creek 1036 Comment
  JEPS53774  Lepidium virginicum Frank W. Peirson 1918-11-2 298 Los Angeles Mt. Wilson Summit San Gabriel Mountains 1767 Comment
  JEPS54047  Thlaspi arvense Frank W. Peirson 1918-5-26 66 Los Angeles Henninger Flats; San Gabriel Mts., Henninger Flats 868 Comment
  JEPS5409  Nemacladus longiflorus var. longiflorus Frank W. Peirson 1921-6-21 2453 Los Angeles San Gabriel Mountains, West Fork of San Gabriel River San Gabriel Mountains, West Fork of San Gabriel River 640 Comment
  JEPS56706  Eriogonum davidsonii Frank W. Peirson 1918-6-30 18 Los Angeles summit Mt. Wilson San Gabriel Mts., Mt. Wilson Comment
  JEPS56723  Eriogonum microthecum var. corymbosoides Frank W. Peirson 4003 Los Angeles n to nw slope along uppermost course of Mescal Creek Mescal Creek Comment
  JEPS56939  Eriogonum gracile Frank W. Peirson 1918-11-2 296 Los Angeles Hennigers Flats San Gabriel Mountains Comment
  JEPS58334  Linanthus concinnus Frank W. Peirson 1920-5-30 2142 Los Angeles North Fork San Antonio Creek San Gabriel Mountains 2133 Comment
  JEPS59145  Cirsium occidentale var. californicum Frank W. Peirson 1918-6-1 248 Los Angeles San Gabriel Mts., Eaton Canyon 640 Comment
  JEPS60545  Clematis lasiantha Frank W. Peirson 1918-5 51 Los Angeles Millards Canyon 640 Comment
  JEPS61154  Amsinckia intermedia Frank W. Peirson 1919-4-5 361 Los Angeles Hennigers Flats; San Gabriel Mountains 853 Comment
  JEPS61208  Abronia pogonantha Frank W. Peirson 1921-5-19 2414 Los Angeles San Gabriel Mountains, Little Rock Creek 1036 Comment
  JEPS61453  Geranium californicum Frank W. Peirson 1922-7-6 3185 Los Angeles Big Pines San Gabriel Mountains 2072 Comment
  JEPS62190  Veratrum californicum var. californicum Frank W. Peirson 1922-7-6 3190 Los Angeles Big Pine Meadows San Gabriel Mountians 2087 Comment
  JEPS62700  Salvia dorrii Frank W. Peirson 1919-5-11 392 Los Angeles Arraster Canyon; San Gabriel Mts. 838 Comment
  JEPS63  Eriodictyon trichocalyx F. W. Peirson 1918-6-10 169 Los Angeles Mt. Lowe 1584 Comment
  JEPS64192  Dichelostemma capitatum Frank W. Peirson 1918-5-21 7 Los Angeles Arroyo Seco San Gabriel Mts. Comment
  JEPS64281  Sisyrinchium bellum Frank W. Peirson 1919-5-18 444 Los Angeles Monrovia Canyon; San Gabriel Mountains 518 Comment
  JEPS6598  Galium aparine F. W. Peirson 1921-6-19 1184 Los Angeles North Fork San Gabriel River San Gabriel Mts. 1005 Comment
  JEPS66263  Rhus ovata Frank W. Peirson 1918-5-19 106 Los Angeles Millards Canyon 1036 Comment
  JEPS67113  Juncus torreyi Frank W. Peirson 1923-8-30 4011 Los Angeles Lone Pine Canyon, on the Clyde Ranch San Gabriel Mountains 1493 Comment
  JEPS69139  Loeseliastrum matthewsii Frank W. Peirson 1921-5-19 952 Los Angeles Little Rock Creek San Gabriel Mts., Little Rock Creek 1036 Comment
  JEPS69713  Gilia splendens subsp. splendens Frank W. Peirson 1918-10-21 286 Los Angeles West Fork San Gabriel River 1219 Comment
  JEPS69925  Phlox douglasii subsp. rigida Frank W. Peirson 1922-7-6 3179 Los Angeles Blue Ridge San Gabriel Mountains 2286 Comment
  JEPS7023  Galium grande F. W. Peirson 1919-5-18 448 Los Angeles ridge between Monrovia Canyon and Fish Canyon; San Gabriel Mts. 990 Comment
  JEPS78507  Nemacladus longiflorus var. longiflorus Frank W. Peirson 1921-6-21 2453 Los Angeles San Gabriel Mountains, West Fork of San Gabriel River 640 Comment
  JEPS7856  Galium angustifolium subsp. angustifolium F. W. Peirson 1918-6-28 213 Los Angeles foothills e Rubio Canyon; San Gabriel Mts. 609 Comment
  JEPS8876  Chaenactis fremontii Frank W. Peirson 1921-5-19 2409 Los Angeles near its opening into the Mojave Desert Little Rock Creek (n base of San Gabriel Mountains); Mojave Desert, San Gabriel Mountains, Little Rock Creek 960 Comment
  JEPS8878  Chaenactis santolinoides Frank W. Peirson 1918-6-10 241 Los Angeles region just to the s of Red Box Gap (at the summit of San Gabriel Peak); San Gabriel Mountains, San Gabriel Peak 1874 Comment
  JEPS960  Sanicula tuberosa Frank W. Peirson 1919-5-14 422 Los Angeles San Gabriel Mountains, Eaton Canyon Eaton Canyon; San Gabriel Mountains, Eaton Canyon 731 Comment
  PASA1815  Corethrogyne filaginifolia Frank W. Peirson 1919-10-26 Los Angeles Foot of Rubio Canyon, Altadena 548 Comment
  PASA2042  Lepidium nitidum Frank W. Peirson 1921-2-26 Los Angeles Topanga Canyon 304 Comment
  PASA2162  Brickellia californica Frank W. Peirson 1924-10-26 Los Angeles Arroyo Seco 198 Comment
  PASA2210  Eriophyllum confertiflorum Frank W. Peirson 1923-9-1 Los Angeles West end of Swartout Valley near the old Saw Mill 2011 Comment
  PASA2230  Heuchera elegans Frank W. Peirson 1922-5-30 Los Angeles West spur of Mt. Lowe 1341 Comment
  PASA357  Thelypodium lasiophyllum Frank W. Peirson 1919-5-14 Los Angeles Eaton Canyon, San Gabriel Mts. 761 Comment
  POM128673  Artemisia spinescens F. W. Peirson 1927-5-7 7262 Los Angeles 3 miles east of Lancaster. Comment
  POM171941  Lupinus peirsonii F. W. Peirson 1930-5-30 8904 Los Angeles North slope of Rock Creek 1372 Comment
  POM35148  Horkelia rydbergii F. W. Peirson 1921-6-16 2448 Los Angeles Pine Flats. 1524 Comment
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Jul 29 2016
  POM75440  Camissonia pallida subsp. pallida F. W. Peirson 1928-6-3 7951 Los Angeles roadside, N slope of Pinyon Ridge, betw Rock Creek and Big Pines, San Gabriel Mts. 1372 Comment
  RSA0070771  Pentagramma triangularis F. W. Peirson 1923-4-10 3440 Los Angeles North slope canyon about 10 miles southeast of Wilson's Cove, San Clemente Island. Comment
  RSA100761  Oreonana vestita F. W. Peirson 1918-6-17 137 Los Angeles summit of North Baldy 2743 Comment
  RSA37103  Agrostis exarata F. W. Peirson 1920-9-17 2289 Los Angeles San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA435910  Berberis nevinii F. W. Peirson 1921-3-3 s.n. Los Angeles Near stream, Arroyo Seco 335 Comment
  RSA64887  Oxytheca parishii var. parishii F. W. Peirson 1922-7-5 3168 Los Angeles Summit of Le Montaine, north of Big Pines, north side of San Gabriel Mountains 2210 Comment
  RSA65167  Chorizanthe parryi var. parryi F. W. Peirson 1920-5-12 2131 Los Angeles Foothill Blvd. San Gabriel Wash, S base of San Gabriel Mts. 183 Comment
  RSA65169  Dodecahema leptoceras F. W. Peirson 1951-1 1777 Los Angeles Rubio Wash, Altadena Comment
Read comments
Dec 17 2015
  RSA65386  Atriplex rosea F. W. Peirson 1920-6-22 s.n. Los Angeles Bassett, near El Monte Comment
  RSA65474  Rumex salicifolius var. salicifolius F. W. Peirson 1919-6-14 29 Los Angeles Rock Creek, north slopes of San Gabriel Mts. 1296 Comment
  RSA65558  Polycarpon depressum F. W. Peirson 1918-6-4 46 Los Angeles Burned area in Hlls east of Rubio Canyon Comment
  RSA65565  Spergularia platensis F. W. Peirson 1944-8-19 s.n. Los Angeles at 1085 New York Avenue, Altadena Comment
  RSA65581  Spergularia platensis F. W. Peirson 1866 Los Angeles Long Beach Comment
  RSA65792  Lepidium virginicum var. virginicum F. W. Peirson 1918-11-2 298 Los Angeles summit of Mt. Wilson Comment
  RSA66083  Brassica rapa F. W. Peirson 1918-03 s.n. Los Angeles At Altadena. Comment
  RSA66107  Cardamine californica var. integrifolia F. W. Peirson s.n. Los Angeles Santa Monica Canyon, Santa Monica Mts. Comment
  RSA66160  Erysimum suffrutescens F. W. Peirson 1922-1-5 1904 Los Angeles Hermosa Beach Comment
  RSA66226  Boechera arcuata F. W. Peirson 1919-6-14 662 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1707 Comment
  RSA66505  Arabis glabra F. W. Peirson 1903-3-10 658 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA66742  Eschscholzia minutiflora F. W. Peirson 1919-6-15 487 Los Angeles Rock Creek, north slope of San Gabriel Mountains. 1296 Comment
  RSA67145  Galium parishii F. W. Peirson 1922-7-5 3158 Los Angeles North of Big Pines, sometimes called La Montaine, San Gabriel Mountains 2256 Comment
  RSA68637  Calochortus plummerae Frank W. Peirson 1921-6-20 2666 Los Angeles North Fork of San Gabriel River 762 Comment
  RSA69394  Thalictrum fendleri var. fendleri F. W. Peirson 1921-7-17 4688 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2012 Comment
  RSA69719  Mentzelia dispersa F. W. Peirson 1921-6-16 2799 Los Angeles north slope of Mt. Waterman, San Gabriel Mts. 2210 Comment
  RSA69881  Forestiera pubescens F. W. Peirson 1919-6-13 483 Los Angeles Large colony on south side of canyon of Rock Creek. 1296 Comment
  RSA70014  Amaranthus albus F. W. Peirson 1921-3-6 1841 Los Angeles San Gabriel Wash. 213 Comment
  RSA70071  Platanthera sparsiflora Frank W. Peirson 1921-7-17 4283 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2134 Comment
  RSA70172  Allium monticola F. W. Peirson 1920-6-10 1 Los Angeles San Gabriel Mountains, trail along west slope of Mt. Markham 1646 Comment
  RSA70269  Juncus phaeocephalus F. W. Peirson 1918-4-28 488 Los Angeles Road east and south of El Monte. Comment
  RSA70415  Arctostaphylos parryana F. W. Peirson 1922-7-6 3196 Los Angeles hills immediately south of divide, Big Pines, north side of San Gabriel Mountains 2104 Comment
  RSA70453  Allium burlewii F. W. Peirson 1921-6-16 2842 Los Angeles north slope of Mt. Waterman 2133 Comment
  RSA70454  Allium burlewii F. W. Peirson 1924-5-27 4628 Los Angeles North slope of Strawberry Peak, San Gabriel Mountains. 1677 Comment
  RSA70576  Sarcodes sanguinea F. W. Peirson 1923-5-26 3444 Los Angeles Vincent Gulch. 1982 Comment
  RSA71096  Calystegia peirsonii F. W. Peirson 1927-5-21 7301 Los Angeles Rock Creek, north base of San Gabriel Mountains. 1524 Comment
  RSA71122  Calystegia occidentalis subsp. fulcrata F. W. Peirson 1923-5-21 3516 Los Angeles Fish Canyon 914 Comment
  RSA71840  Gilia latiflora subsp. latiflora F. W. Peirson 1921-5-19 2832 Los Angeles Little Rock Creek: north base of San Gabriel Mountains. 1037 Comment
  RSA72148  Gayophytum decipiens F. W. Peirson 1919-6-14 796 Los Angeles San Gabriel Mts., Rock Creek. 1707 Comment
  RSA72333  Epilobium canum subsp. canum F. W. Peirson 1916-8-31 758 Los Angeles Ridge road about 2 miles north of Sandberg's, Liebre Mts. 1143 Comment
  RSA72334  Epilobium canum subsp. canum F. W. Peirson 1907-7-1 755 Los Angeles Catalina Island. Comment
  RSA73023  Linanthus parryae F. W. Peirson 1921-5-20 940 Los Angeles Mojave Desert, Little Rock Creek, San Gabriel Mountains 1067 Comment
  RSA73041  Linanthus bigelovii F. W. Peirson 1921-5-20 2791 Los Angeles Little Rock Creek, San Gabriel Mts. 976 Comment
  RSA73290  Linanthus californicus F. W. Peirson 1918-5-4 158 Los Angeles Summit of Santa Monica Range, above Brents on the Malibu Comment
  RSA73341  Clarkia dudleyana F. W. Peirson 1920-6-10 4456 Los Angeles North slope of Echo Mtn. 915 Comment
  RSA73348  Clarkia rhomboidea F. W. Peirson 1927-5-21 7300 Los Angeles North side of canyon of Rock Creek 1524 Comment
  RSA74161  Phacelia cicutaria var. hubbyi F. W. Peirson 1920-3-28 2100 Los Angeles North slope of low hills at foot of Tujunga Canyon, w. end of San Gabriel Mountains. 457 Comment
  RSA75134  Nemacladus ramosissimus F. W. Peirson 1925-4-23 5784 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA75437  Camissonia hirtella F. W. Peirson 1918-5-4 2309 Los Angeles Summit of Santa Monica Range, above Brents on the Malibu Comment
  RSA75683  Camissonia boothii subsp. decorticans F. W. Peirson 1919-6-14 479 Los Angeles Rock Creek [Big?] 1524 Comment
  RSA76939  Rhus trilobata F. W. Peirson 1919-5-18 342 Los Angeles Hills east of Monrovia Canyon 457 Comment
  RSA77048  Sphaeralcea emoryi subsp. variabilis F. W. Peirson 1917-5-13 776 Los Angeles Palmdale, SW Mojave Desert. Comment
  RSA77161  Ceanothus leucodermis F. W. Peirson 1921-5-20 8673 Los Angeles Between the forks, Little Rock Creek, San Gabriel Mts. 1067 Comment
  RSA77171  Rhus integrifolia F. W. Peirson 1919-1-25 313 Los Angeles Arroyo Seco, near Pasadena 381 Comment
  RSA77220  Fremontodendron californicum subsp. californicum F. W. Peirson 1921-5-20 773 Los Angeles Little Rock Creek 1067 Comment
  RSA79774  Keckiella cordifolia F. W. Peirson 205 Los Angeles Mt. Lowe, San Gabriel Mountains. Comment
  RSA80195  Plagiobothrys collinus var. fulvescens F. W. Peirson 1921-6-15 997 Los Angeles Trail from Pine Flats to Chilao 1677 Comment
  RSA80243  Orthocarpus purpurascens var. pallidus F. W. Peirson 1951-3-7 334 Los Angeles Eagle Rock Valley Comment
  RSA80335  Lycium cooperi F. W. Peirson 1921-5-19 1086 Los Angeles Little Rock Creek 945 Comment
  RSA80384  Solanum umbelliferum F. W. Peirson 1919-6-15 1082 Los Angeles Rock Creek, north slope of San Gabriel Mountains. 1296 Comment
  RSA80433  Antirrhinum multiflorum F. W. Peirson 1951-1 190 Los Angeles Summit of Mt. Lowe Comment
  RSA80434  Antirrhinum multiflorum F. W. Peirson 1924-5-26 4643 Los Angeles Trail to Switzers Camp, San Gabriel Mts 930 Comment
  RSA80694  Epilobium densiflorum F. W. Peirson 1907-7-9 2085 Los Angeles Pine Flats, San Gabriel Mts. 1524 Comment
  RSA80713  Grindelia camporum F. W. Peirson 1928-9-5 8190 Los Angeles roadside about half dry meadows, Rock Creek, N slope of San Gabriel Mts. 1220 Comment
  RSA80755  Cryptantha pterocarya F. W. Peirson 1919-6-4 477 Los Angeles Rock Creek, north slope of San Gabriel Mts. 1692 Comment
  RSA80771  Nicotiana quadrivalvis F. W. Peirson 1921-3-6 2729 Los Angeles San Gabriel Wash. 213 Comment
  RSA81491  Castilleja linariifolia F. W. Peirson 1919-6-14 490 Los Angeles Rock Creek, north slope of San Gabriel Mts. 1524 Comment
  RSA82097  Mimulus aurantiacus F. W. Peirson 1919-5-18 434 Los Angeles Hills east of Monrovia Canyon 457 Comment
  RSA82243  Castilleja miniata subsp. miniata F. W. Peirson 1921-7-17 2726 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2134 Comment
  RSA82280  Castilleja foliolosa F. W. Peirson 1919-5-10 430 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains. 915 Comment
  RSA82554  Stachys albens F. W. Peirson 1927-8-14 7840 Los Angeles Arroyo Seco south base of San Gabriel Mts. 549 Comment
  RSA82992  Salvia dorrii var. pilosa F. W. Peirson 1919-6-15 392 Los Angeles Rock Creek, north slope of San Gabriel Mountains. 1296 Comment
  RSA83360  Dudleya cymosa subsp. pumila F. W. Peirson 1919-5-10 453 Los Angeles Mt.Gleason 1372 Comment
  RSA83395  Dudleya densiflora F. W. Peirson 1919-7-1 517 Los Angeles Fish Canyon 274 Comment
  RSA84282A  Equisetum telmateia var. braunii F. W. Peirson 1920-4-25 8450 A Los Angeles Arroyo Seco, Pasadena 411 Comment
  RSA84838  Ribes nevadense F. W. Peirson 1918-5-26 72 Los Angeles Summit of Mt. Wilson, San Gabriel Mts Comment
  RSA84950  Ribes roezlii F. W. Peirson 1921-6-18 4436 Los Angeles Windy Camp, Mt Islip, San Gabriel Mountains. 2256 Comment
  RSA85007  Adiantum jordanii F. W. Peirson 1921-4-3 2393 Los Angeles Pacoima Canyon, W end of San Gabriel Mtns. 534 Comment
  RSA85236  Horkelia bolanderi F. W. Peirson 1923-8-31 4026 Los Angeles Earthquake rift, 2 miles W of Big Pines, N face of San Gabriel Mts. 1860 Comment
  RSA85263  Holodiscus microphyllus F. W. Peirson 1920-9-12 76 Los Angeles Summit of Mt. San Antonio, San Gabriel Mountains 3064 Comment
  RSA85264  Holodiscus discolor F. W. Peirson 75 Los Angeles Montana St. Pasadena Comment
  RSA85319  Berberis aquifolium var. aquifolium F. W. Peirson 1943-5-15 13462 Los Angeles along small stream bed immediately south and above Big Pines Center 2133 Comment
  RSA85457  Mahonia dictyota F. W. Peirson 1919-3-6 54 Los Angeles Eaton Canyon, south slope of San Gabriel Mts. 610 Comment
  RSA85525  Umbellularia californica F. W. Peirson 1919-1-25 312 Los Angeles Arroyo Seco, near Pasadena 381 Comment
  RSA85787  Drymocallis glandulosa var. wrangelliana F. W. Peirson 696 Los Angeles Laurel Canyon Comment
  RSA86673  Cercocarpus betuloides var. betuloides F. W. Peirson 1919-3-27 340 Los Angeles Road out of Arroyo Seco. 549 Comment
  RSA86728  Avena barbata F. W. Peirson 1918-04 1600 Los Angeles Altadena. Comment
  RSA86833  Rubus ursinus F. W. Peirson 1921-5-3 8653 Los Angeles North Fork of Millards Canyon 1067 Comment
  RSA86842  Prunus virginiana var. demissa F. W. Peirson 1923-5-26 3528 Los Angeles Vincent Gulch side of Rock Creek Divide, San Gabriel Mountains 2012 Comment
  RSA86959  Lupinus odoratus F. W. Peirson 1921-7-2 2477 Los Angeles Pallett Creek, lower Rock Creek tributary: north side of San Gabriel Mountains. 1098 Comment
  RSA87060  Hordeum murinum subsp. glaucum F. W. Peirson 1918-04 1605 Los Angeles New York Drive, Altadena Comment
  RSA87127  Koeleria macrantha F. W. Peirson 1918-6-30 1597 Los Angeles Summit of Mt. Wilson, San Gabriel Mountains. Comment
  RSA87153  Quercus wislizeni var. frutescens F. W. Peirson 1919-5-10 403 Los Angeles Trail from Arraster [Arrastre] Creek to Mt. Gleason, San Gabriel Mts 1524 Comment
  RSA87208  Lupinus elatus F. W. Peirson 1929-7-1 8439 Los Angeles Mt. Pacifico 2058 Comment
  RSA87325  Muhlenbergia microsperma F. W. Peirson 1927-3-20 7118 Los Angeles Summit of ridge south of Malibu Lake Comment
  RSA87337  Melica imperfecta F. W. Peirson 1922-5-30 5365 Los Angeles Dawn Station, Mt. Lowe, San Gabriel Mountains. Comment
  RSA87423  Lupinus polyphyllus subsp. bernardinus F. W. Peirson 1923-5-21 3520 Los Angeles Fish Canyon, San Bernardino Mountains 686 Comment
  RSA87441  Melica imperfecta F. W. Peirson 1923-4-12 3420 Los Angeles Wilson's Cove, San Clemente Island Comment
  RSA87457  Melica imperfecta F. W. Peirson 1918-04 1569 Los Angeles Altadena. Comment
  RSA88805  Carex phaeocephala F. W. Peirson 1922-7-21 4267 Los Angeles north slope of Mt. Antonio, San Gabriel Mts., line between Los Angeles and San Bernardino counties 2988 Comment
  RSA90181  Astragalus bicristatus F. W. Peirson 1921-7-17 2510 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains 2058 Comment
  SD70410  Viola pedunculata Frank W. Peirson 1919-3-27 332 Los Angeles Foot of Lukens Peak trail, San Gabriel Mountains 579 Comment
  SD87549  Leptosiphon breviculus Frank W. Peirson 1929-7-1 8443 Los Angeles Mt. Pacifico, San Gabriel Mountains. 1981 Comment
  UC483089  Salix lasiolepis Frank W. Peirson 1932-3-3 9767 Los Angeles Arroyo Seco Canyon; banks of stream 396 Comment
  UC501591  Smilacina stellata Frank W. Peirson 1921-7-17 2349 Los Angeles Prairie fork of San Gabriel River; cienega on s side 2133 Comment
  UC566788  Sanicula arguta Frank W. Peirson 1923-4-9 3429 Los Angeles near Wilson Cove (San Clemente Island); San Clemente Island Comment
  UC908885  Gilia ochroleuca subsp. vivida Frank W. Peirson 1928-6-2 7934 Los Angeles S Fork Rock Cr , S. Fork Rock Cr. (San Gabriel Mts.) 1981 Comment
  UCR142553  Hesperocnide tenella F. W. Peirson 1921-2-26 2356 Los Angeles Western Transverse Range; Santa Monica Mtns., Topanga Canyon Divide 488 Comment
  CAS-BOT-BC263041  Eriogonum maculatum Frank W. Peirson 1927-5-7 7264 Los Angeles 4 miles east of Lancaster Comment
  CAS-BOT-BC296957  Eriophyllum wallacei Frank W. Peirson 1919-5-30 346 Los Angeles Tujunga Canyon, west end of San Gabriel Mts. 426 Comment
  CAS-BOT-BC426253  Lithophragma affine Frank W. Peirson 1925-4-23 5805 Los Angeles San Gabriel River 365 Comment
  CAS-BOT-BC434370  Sidotheca trilobata Frank W. Peirson 1921-6-14 1783 Los Angeles Tujunga Canyon, San Gabriel Mts. 1280 Comment
  CAS-BOT-BC515035  Eriastrum sapphirinum subsp. sapphirinum F. W. Peirson 1918-11-2 156 Los Angeles San Gabriel Mts., Hennigers Flat, Mt. Wilson Toll Road 853 Comment
  JEPS11453  Mimulus guttatus Frank W. Peirson 1918-8-6 259 Los Angeles old trail to Mt. Wilson; San Gabriel Mountains 838 Comment
  JEPS11806  Heterocodon rariflorum Frank W. Peirson 1921-6-14 1210 Los Angeles Trail Fork San Gabriel; San Gabriel Mountains 990 Comment
  JEPS2194  Phacelia cicutaria var. hispida F. W. Peirson 1918-6-1 161 Los Angeles Henninger Flats San Gabriel Mts. 868 Comment
  JEPS40053  Layia glandulosa Frank W. Peirson 1925-4-23 5803 Los Angeles below Forks; San Gabriel Canyon 396 Comment
  JEPS42770  Mentzelia dispersa Frank W. Peirson 1922-5-30 3074 Los Angeles San Gabriel Mountains, Mt. Lowe, Westspur 1371 Comment
  JEPS43824  Clarkia epilobioides Frank W. Peirson 1919-5-18 433 Los Angeles hills e Monrovia Canyon; San Gabriel Mountains 457 Comment
  JEPS44137  Centaurea melitensis Frank W. Peirson 1919-5-18 435 Los Angeles hills e of Monrovia Canyon; San Gabriel Mts. 457 Comment
  JEPS47683  Lithophragma tenellum Frank W. Peirson 1921-6-16 2442 Los Angeles trail n Mt. Waterman; San Gabriel Mountains, trail n of Mt. Waterman 1828 Comment
  JEPS48061  Sedum spathulifolium Frank W. Peirson 1921-6-21 2472 Los Angeles West Fork San Gabriel Riv. , West Fork San Gabriel Riv (San Gabriel Mountains) 685 Comment
  JEPS50330  Viola purpurea subsp. purpurea Frank W. Peirson 1918-6-10 117 Los Angeles near Observation Point, Mount Lowe Mount Lowe; San Gabriel Mountains, Mount Lowe 1371 Comment
  JEPS5324  Lobelia dunnii var. serrata F. W. Peirson 1918-8-6 260 Los Angeles old trail to Mount Wilson 838 Comment
  JEPS54102  Guillenia lasiophylla Frank W. Peirson 1919-5-27 327 Los Angeles hills w Arroyo Seco; San Gabriel Mountains 426 Comment
  JEPS61500  Allium campanulatum Frank W. Peirson 1922-7-5 3192 Los Angeles about 1/2 mi w Big Pines (along left bank of stream); San Gabriel Mountains, Mescal Creek Comment
  JEPS61529  Allium haematochiton Frank W. Peirson 1921-4-21 2401 Los Angeles Sycamore Flat to San Dimas Canyon; San Gabriel Mountains 792 Comment
  JEPS62247  Zigadenus fremontii Frank W. Peirson 1921-4-21 2402 Los Angeles Sycamore Flat to San Dimas Creek; San Gabriel Mountains 792 Comment
  JEPS68644  Malva nicaeensis F. W. Peirson 3356 Los Angeles streets of Claremont Claremont Comment
  JEPS69536  Gilia capitata subsp. abrotanifolia Frank W. Peirson 1918-6-4 154 Los Angeles e Rubio Canyon (San Gabriel Mountains); , e of Rubio Canyon 609 Comment
  JEPS9551  Dicentra chrysantha Frank W. Peirson 1918-6-10 56 Los Angeles Mt. Markham; San Gabriel Mountains 1615 Comment
  PASA1101  Lotus oblongifolius Frank W. Peirson 1919-5-21 Los Angeles Arroyo Seco 548 Comment
  PASA1777  Malvastrum exile Frank W. Peirson 1923-5-27 Los Angeles Pallett Creek, San Gabriel Mts. 1097 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
  PASA2282  Antennaria dimorpha Frank W. Peirson 1921-6-15 Los Angeles Pine Flats, San Gabriel Mts. 1676 Comment
  PASA2313  Layia glandulosa Frank W. Peirson 1925-4-23 Los Angeles San Gabriel River 396 Comment
  PASA2695  Chenopodium fremontii Frank W. Peirson 1924-10-26 5258 Los Angeles Arroyo Seco below California St. bridge, Pasadena 198 Comment
  PASA987  Castilleja montana Frank W. Peirson 1921-7-17 Los Angeles Praire Fork of the San Gabriel River 2133 Comment
  POM13535  Orobanche californica subsp. feudgei F. W. Peirson 1922-7-7 s.n. Los Angeles Ranger's Cabin, Swartout Valley. 1799 Comment
  POM18747  Chenopodium murale F. W. Peirson 1923-4-9 3481 Los Angeles San Clemente Island: Lemon Tank. Comment
  POM47656  Collomia grandiflora F. W. Peirson 1924-5-28 4634 Los Angeles Hoyt Ranch, Tujunga Canyon, San Gabriel Mountains. 579 Comment
  POM9689  Astragalus didymocarpus var. dispermus F. W. Peirson 1919-5-11 398 Los Angeles Arraster [Arrastre] Creek, north slope of San Gabriel Mts. 853 Comment
  POM9773  Gaura sinuata F. W. Peirson 1920-6-13 2160 Los Angeles Altadena, at northwest corner of N.Y. Ave. and Maiden Lane. Comment
  POM9917  Adiantum jordanii F. W. Peirson 1921-4-3 2393 Los Angeles Pacoima Canyon, W end of San Gabriel Mtns. 534 Comment
  POM99735  Antirrhinum coulterianum F. W. Peirson 188 Los Angeles Foothills east of Rubio C. San Gabriel Mts. Comment
  RSA0004010  Calystegia occidentalis subsp. fulcrata F. W. Peirson 1929-7-1 8448 Los Angeles Mt. Pacifico. 1905 Comment
  RSA0017015  Quercus kelloggii F. W. Peirson 1919-6-14 1708 Los Angeles Rock Creek, north slope of San Gabriel Mountains. 1982 Comment
  RSA0059184  Orobanche uniflora subsp. occidentalis Frank W. Peirson 1921-5-12 1174 Los Angeles Big Santa Anita Trail, south slope of San Gabriel Mts. 762 Comment
  RSA0062944  Heuchera elegans F. W. Peirson 1928-6-2 7935 Los Angeles Trail up south fork of Rock Creek, north face of San Gabriel Mts. 1905 Comment
  RSA0063155  Andropogon glomeratus var. scabriglumis F. W. Peirson 1918-10-16 1571 Los Angeles Near foot of Pacoima Canyon, west end of San Gabriel Mts. Comment
  RSA0078634  Orobanche californica subsp. feudgei F. W. Peirson 1907-7-1 1178 Los Angeles Pine Flats, headwaters of Tujunga Creek, west end of San Gabriel Mts. 1676 Comment
  RSA0079395  Cryptantha muricata var. jonesii F. W. Peirson 1921-7-1 2476 Los Angeles Arraster Creek, north slope of San Gabriel Mountains. 945 Comment
  RSA0079461  Cryptantha muricata var. jonesii F. W. Peirson 1925-4-23 5794 Los Angeles Burned hillslope at forks of San Gabriel River. 533 Comment
  RSA0126321  Nemacladus longiflorus var. longiflorus F. W. Peirson 1921-6-21 2453 Los Angeles West Fork of San Gabriel River. 610 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
  RSA64586  Eriogonum pusillum F. W. Peirson 1923-5-27 4203 Los Angeles Pallett Creek, north slope of San Gabriel Mountains 1098 Comment
  RSA64774  Oxytheca trilobata F. W. Peirson 1929-7-1 8418 Los Angeles Aliso Creek, San Gabriel Mts. 1098 Comment
  RSA65058  Silene verecunda subsp. platyota F. W. Peirson 1922-7-5 4687 Los Angeles Blue Ridge, north side of San Gabriel Mountains 2591 Comment
  RSA65177  Lastarriaea coriacea F. W. Peirson 1919-5-21 447 Los Angeles foot of canyon proper, on Arroyo Seco. 381 Comment
  RSA65463  Rumex maritimus F. W. Peirson 1804 Los Angeles San Fernando Valley. Comment
  RSA65492  Spergula arvensis F. W. Peirson 1923-3-18 5322 Los Angeles field, San Gabriel Blvd at olf Eucalyptus road, San Gabriel Valley Comment
  RSA65824  Sisymbrium officinale F. W. Peirson 1920-4-25 2109 Los Angeles Arroyo Seco, west of Pasadena 411 Comment
  RSA65841  Sisymbrium altissimum F. W. Peirson 1918-5-26 61 Los Angeles Henni[n]gers Flat Comment
  RSA65893  Centrostegia thurberi F. W. Peirson 1922-7-7 3172 Los Angeles Sheep Creek. North base of San Gabriel Mountains. 1448 Comment
  RSA65894  Centrostegia thurberi var. thurberi F. W. Peirson 1930-5-31 8909 Los Angeles Below Lovejoy Dam, Lovejoy Buttes, southwestern Mojave Desert. Comment
  RSA66005  Eriogonum parishii F. W. Peirson 1923-8-31 4004 Los Angeles Blue Ridge, north slope of San Gabriel Mountains. 2591 Comment
  RSA66527  Athysanus pusillus F. W. Peirson 1919-4-5 60 Los Angeles Old Trail to Mt. Wilson, San Gabriel Mts. 762 Comment
  RSA66597  Rorippa curvisiliqua F. W. Peirson 1906 Los Angeles Playa del Rey. Comment
  RSA66778  Thysanocarpus curvipes F. W. Peirson 1921-3-3 388 Los Angeles Arroyo Seco, near Pasadena 350 Comment
  RSA68729  Fritillaria biflora Frank W. Peirson 1676 Los Angeles Wash of Arroyo Seco, Pasadena Comment
  RSA68784  Delphinium parishii subsp. parishii F. W. Peirson 1919-5-11 419 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mountains. 915 Comment
  RSA68975  Plantago erecta F. W. Peirson 1919-3-27 329 Los Angeles Arroyo Seco near Pasadena 412 Comment
  RSA69024  Dodecatheon clevelandii subsp. clevelandii F. W. Peirson 1919-2-9 321 Los Angeles Fish Canyon, San Gabriel Mts. 305 Comment
Read comments
Dec 10 2014
  RSA69572  Mentzelia micrantha F. W. Peirson 1919-5-14 2302 Los Angeles East trail to Mount Lowe. 1067 Comment
  RSA69593  Triglochin maritima F. W. Peirson 1918-08 1542 Los Angeles Long Beach Comment
  RSA69629  Juncus patens F. W. Peirson 1923-4-10 3416 Los Angeles San Clemente Island: canyon running south from summit. Comment
  RSA69979  Abronia pogonantha F. W. Peirson 1923-5-27 5215 Los Angeles Pallett Creek, tributary to Rock Creek, north slope of San Gabriel Mts. 1098 Comment
  RSA70061  Juncus rugulosus F. W. Peirson 1924-8-23 5057 Los Angeles west fork of San Gabriel River 411 Comment
  RSA70157  Dichelostemma capitatum subsp. capitatum F. W. Peirson 1919-5-18 s.n. Los Angeles Hills east of Monrovia Canyon 457 Comment
  RSA70162  Dichelostemma capitatum subsp. capitatum F. W. Peirson 1923-4-12 3485 Los Angeles Wilson s Cove, San Clemente Island Comment
  RSA70313  Juncus xiphioides F. W. Peirson 1921-5-20 2418 Los Angeles Little Rock Creek 1204 Comment
  RSA70385  Euphorbia peplus F. W. Peirson 1921-4-8 2400 Los Angeles Coolidge Rare plant gardens, Santa Anita Road, Pasadena, CA. Comment
  RSA70503  Geranium carolinianum F. W. Peirson 1921-6-20 8219 Los Angeles North Fork of San Gabriel River, San Gabriel Mts 762 Comment
  RSA70534  Chamaesyce melanadenia F. W. Peirson 1919-1-25 310 Los Angeles Arroyo Seco, near Pasadena 381 Comment
  RSA71002  Cuscuta ceanothi F. W. Peirson 1924-10-26 5261 Los Angeles Arroyo Seco, about 0.5 mile below California Street, Pasadena, 198 Comment
  RSA71111  Calystegia soldanella F. W. Peirson 894 Los Angeles Ballona Comment
  RSA71829  Saltugilia splendens subsp. splendens F. W. Peirson 1925-4-23 5785 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA72187  Epilobium glaberrimum subsp. glaberrimum F. W. Peirson 1920-9-14 4454 Los Angeles Ridge west of Coldwater Creek, near a spring. 2363 Comment
  RSA72194  Oenothera californica subsp. californica F. W. Peirson 781 Los Angeles Los Angeles River, San Fernando Valley Comment
  RSA73281  Linanthus pungens F. W. Peirson 1929-7-1 8440 Los Angeles Mt. Pacifico: upper part of trail, San Gabriel Mountains. 1982 Comment
  RSA73359  Clarkia rhomboidea F. W. Peirson 1920-6-10 2161 Los Angeles San Gabriel Mountains, trail along west slope of Mt. Markham 1646 Comment
  RSA74168  Phacelia ciliata F. W. Peirson 1903-2-14 967 Los Angeles Road to Pasadena from Los Angeles. Comment
  RSA7495  Phacelia distans F. W. Peirson 1922-4-10 4121 Los Angeles 3-4 miles S of Seal Harbor, San Clemente Island. Comment
  RSA75982  Eucrypta chrysanthemifolia F. W. Peirson 1921-02 167 Los Angeles Coldwater Canyon, Santa Monica Mts. Comment
  RSA76283  Eriastrum sapphirinum subsp. dasyanthum F. W. Peirson 1956-11-2 156 Los Angeles Mt. Wilson Road, San Gabriel Mts Comment
  RSA77062  Loeseliastrum matthewsii F. W. Peirson 1919-6-15 468 Los Angeles Rock Creek, San Gabriel Mts. 1280 Comment
  RSA77155  Ceanothus leucodermis F. W. Peirson 1920-4-18 2107 Los Angeles New York St., La Canada. 610 Comment
  RSA77256  Emmenanthe penduliflora var. penduliflora F. W. Peirson 168 Los Angeles Benedict s Canyon Comment
  RSA77419  Datisca glomerata F. W. Peirson 1904-8-28 122 Los Angeles Little Santa Anita Canyon, south base of San Gabriel Mts. Comment
  RSA77640  Marah macrocarpa F. W. Peirson 1919-1-25 308 Los Angeles Foot of Arroyo Seco Canyon, Pasadena 381 Comment
  RSA79626  Cryptantha simulans F. W. Peirson 1920-6-10 2157 Los Angeles [San Gabriel Mountains] summit of Mt. Wilson. 1737 Comment
Read comments
Feb 1 2017
  RSA80137  Mimulus guttatus F. W. Peirson 1918-6-28 259 Los Angeles Sierra Madre trail to Mt. Wilson, San Gabriel Mountains 838 Comment
  RSA80170  Collinsia heterophylla F. W. Peirson 1921-6-21 4492 Los Angeles west fork of San Gabriel River 762 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
  RSA80766  Petunia parviflora F. W. Peirson 1092 Los Angeles Los Angeles River, Inglewood. Comment
  RSA80832  Pedicularis densiflora F. W. Peirson 1921-4-21 2363 Los Angeles Sycamore Flat Ridge, San Gabriel Mtns. 854 Comment
  RSA82403  Salvia mellifera F. W. Peirson 1920-4-18 181 Los Angeles New York St., La Canada. 610 Comment
  RSA83928  Ranunculus californicus F. W. Peirson 1918-4-28 1871 Los Angeles Turnbull Canyon near Whittier, Puente Hills. Comment
  RSA84231  Monardella australis F. W. Peirson 1929-7-1 8445 Los Angeles Mt. Pacifico: upper part of trail, San Gabriel Mountains. 1982 Comment
  RSA84264  Ranunculus aquatilis var. capillaceus F. W. Peirson 1923-6-9 4304 Los Angeles Bouquet Canyon, northwest part of San Gabriel Mts. 762 Comment
  RSA86271  Pellaea mucronata var. mucronata F. W. Peirson 1919-12-2 1514 Los Angeles West Fork of Rubio Canyon, south base of San Gabriel Mtns 762 Comment
  RSA86941  Lupinus truncatus F. W. Peirson 1919-3-26 360 Los Angeles New York Drive and Holliston, Altadena, Alt 1150ft 351 Comment
  RSA86948  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1917-5-12 2432 Los Angeles County public camp ground in Mint Canyon, northwest corner of San Gabriel Mts. Comment
  RSA87039  Lupinus succulentus F. W. Peirson 1921-2-26 2361 Los Angeles Near road to Topanga Canyon, San Fernando Valley 274 Comment
  RSA87140  Lupinus hirsutissimus F. W. Peirson 1920-3-28 86 Los Angeles Field at foot of Tujunga Canyon, west end of San Gabriel Mountains 441 Comment
  RSA88649  Carex barbarae F. W. Peirson 1920-5-8 2685 Los Angeles San Rafael Hills, west of Arroyo Seco. Comment
  RSA88854  Carex tumulicola F. W. Peirson 1923-4-10 3417 Los Angeles San Clemente Island: canyon running south from summit. Comment
  RSA90045  Lotus argophyllus subsp. ornithopus F. W. Peirson 1923-4-9 3468 Los Angeles San Clemente Island: about 2 miles SE of Wilson's cove Comment
  RSA90067  Lotus argophyllus var. argophyllus F. W. Peirson 1921-5-12 4091 Los Angeles Big Santa Anita Canyon, S base of San Gabriel Mts 762 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
  RSA90190  Astragalus coccineus F. W. Peirson 1926-4-27 6663 Los Angeles Rock Creek, north base of San Gabriel Mts. 1220 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
  RSA90233  Astragalus douglasii var. douglasii F. W. Peirson 1919-5-10 397 Los Angeles Arraster [Arrastre] Creek. 976 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
  RSA90278  Lathyrus vestitus var. vestitus F. W. Peirson 1919-3-11 104 Los Angeles first canyon east of Rubio Canyon 549 Comment
  RSA90352  Lotus crassifolius var. crassifolius F. W. Peirson 1905-7-14 4078 Los Angeles Bear Flat Comment
  RSA90367  Lotus heermannii F. W. Peirson 1918-5-21 99 Los Angeles Wet place near stream; Arroyo Seco, near Pasadena 518 Comment
  RSA90369  Lotus heermannii var. heermannii F. W. Peirson 1919-7-1 510 Los Angeles South base of San Gabriel Mtns, Fish Canyon. 457 Comment
  RSA91015  Trifolium wormskioldii F. W. Peirson 1930-5-31 8915 Los Angeles Below Lovejoy Dam. Lovejoy Buttes. SW Mojave Desert. Comment
  RSA91035  Erigeron foliosus var. foliosus F. W. Peirson 1920-9-15 2285 Los Angeles Pine Mountain, 2 miles N of Mt. San Antonio 2941 Comment
  RSA91107  Trifolium obtusiflorum F. W. Peirson 1919-7-1 485 Los Angeles Fish Canyon, San Gabriel Mts. 305 Comment
  RSA91109  Trifolium obtusiflorum F. W. Peirson 1921-4-3 5211 Los Angeles Pacoima Canyon, W end of San Gabriel Mts 686 Comment
  RSA91119  Trifolium monanthum var. monanthum F. W. Peirson 1919-6-16 92 Los Angeles S Fork of Rock Creek, San Gabriel Mts. 1982 Comment
  RSA91195  Lupinus formosus var. formosus F. W. Peirson 1920-5-14 4695 Los Angeles Arroyo Seco, near Pasadena 518 Comment
  RSA91228  Lupinus formosus var. formosus F. W. Peirson 1924-5-26 4638 Los Angeles Strawberry Peak, Strawberry Peak, San Gabriel Mts 1143 Comment
  RSA91296  Alnus rhombifolia F. W. Peirson 1924-8-23 5047 Los Angeles west fork of San Gabriel River 411 Comment
  RSA91305  Vicia americana var. americana F. W. Peirson 1921-4-10 2396 Los Angeles South base of San Gabriel Mtns. San Dimas Canyon. 427 Comment
  RSA91353  Lupinus chamissonis F. W. Peirson 1922-1-5 2664 Los Angeles Hermosa Beach Comment
  RSA91383  Linum usitatissimum F. W. Peirson 2026 Los Angeles Los Angeles River, San Fernando Valley Comment
  RSA91442  Trifolium gracilentum var. palmeri F. W. Peirson 1923-4-12 3436 Los Angeles Wilson's Cove, San Clemente Island. Comment
  RSA91515  Poa secunda F. W. Peirson 1918-04 1550 Los Angeles Arroyo Seco above Devil's Gate, West of Pasadena Comment
  RSA91535  Trifolium willdenovii F. W. Peirson 1923-4-8 3434 Los Angeles Wilsons Cove, San Clemente Island. Comment
  RSA91553  Trifolium willdenovii F. W. Peirson 1919-5-14 423 Los Angeles Eaton Canyon 732 Comment
  RSA91761  Ericameria linearifolia F. W. Peirson 1921-5-19 2757 Los Angeles Little Rock Creek 945 Comment
  RSA92045  Bromus hordeaceus F. W. Peirson 1918-5-5 1555 Los Angeles Brents on the Malibu, Santa Monica Mountains. Comment
  RSA92186  Lagophylla ramosissima F. W. Peirson 1358 Los Angeles Montana St. Pasadena Comment
  RSA92266  Achyrachaena mollis F. W. Peirson 1921-4-10 1363 Los Angeles South base of San Gabriel Mtns. San Dimas Canyon. 426 Comment
  RSA92276  Layia glandulosa F. W. Peirson 1921-5-19 2413 Los Angeles Little Rock Creek: north base of San Gabriel Mountains 976 Comment
  RSA92300  Cyperus virens F. W. Peirson 1918-4-28 1609 Los Angeles Southeast of El Monte. Comment
  RSA92379  Psilocarphus tenellus F. W. Peirson 1918-5-5 1303 Los Angeles Brents on the Malibu, Santa Monica Mountains. Comment
  RSA92421  Coreopsis calliopsidea F. W. Peirson 1932-4-17 9863 Los Angeles 2 miles northeast of Lovejoy Buttes, Mohave Desert 762 Comment
  RSA92428  Helianthus gracilentus F. W. Peirson s.n. Los Angeles Verdugo Mountains Comment
  RSA92530  Eriophyllum wallacei F. W. Peirson 1919-5-30 346 Los Angeles San Gabriel Mountains. 426 Comment
  RSA92608  Salix exigua F. W. Peirson 1919-3-30 355 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains 396 Comment
  RSA92640B  Salix lasiolepis F. W. Peirson 1919-3-30 720 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains. 457 Comment
  RSA92702  Salix laevigata F. W. Peirson 1923-5-27 9609 Los Angeles Pallett Creek, north slope of San Gabriel Mountains 1098 Comment
  RSA92861  Chaenactis santolinoides F. W. Peirson 1928-6-2 7932 Los Angeles S fork of Rock Creek: trail toward the summit. 1982 Comment
  RSA92924  Lasthenia californica F. W. Peirson 1923-4-9 3425 Los Angeles San Clemente Island: Wilson's Cove Comment
  RSA92987  Lasthenia coronaria F. W. Peirson 1921-3-3 330 Los Angeles Arroyo Seco, near Pasadena 350 Comment
  RSA93081  Solidago confinis F. W. Peirson 1920-9-12 s.n. Los Angeles Bear Flat to Mt. Baldy trail, San Gabriel Mountains, eastern Los Angeles Co. 1707 Comment
  RSA93086  Pluchea odorata F. W. Peirson 1924-8-24 5093 Los Angeles Road from Artesia to Hungtington Beach. Comment
  RSA93356  Heterotheca fastigiata F. W. Peirson 1918-10-21 1226 Los Angeles West Fork of San Gabriel River. 1067 Comment
  RSA93358  Heterotheca fastigiata F. W. Peirson 1918-10-16 285 Los Angeles Pacoima Canyon west end of San Gabriel Mts. 534 Comment
  RSA93738  Aster lanceolatus F. W. Peirson 1908-5-22 2589 Los Angeles Bixby Ranch near Long Beach. Comment
  RSA93903  Encelia actoni F. W. Peirson 1919-6-13 484 Los Angeles Large colony on south side of canyon of Rock Creek. 1296 Comment
  RSA93904  Encelia actoni F. W. Peirson 1921-5-19 4144 Los Angeles Little Rock Creek, north base of San Gabriel Mts. 915 Comment
  RSA93913  Iva axillaris F. W. Peirson 1921-7-2 1322 Los Angeles Pallett Creek, north base of San Gabriel Mountains. 1098 Comment
  RSA94365  Madia gracilis F. W. Peirson 1920-6-10 2777 Los Angeles Maple Spring on trail to Mt. Lowe. 1067 Comment
  RSA94632  Syntrichopappus lemmonii F. W. Peirson 1921-5-19 4244 Los Angeles Little Rock Creek: north base of San Gabriel Mountains 976 Comment
  RSA94708  Senecio astephanus F. W. Peirson 4312 Los Angeles upper part of Mt. Wilson trail (now toll road) Comment
  RSA94914  Cirsium occidentale var. californicum F. W. Peirson 1918-6-16 1462 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1448 Comment
  RSA94933  Tetradymia axillaris var. longispina F. W. Peirson 1921-5-20 1429 Los Angeles Little Rock Creek, N slope of San Gabriel Mts 1037 Comment
  RSA95047  Hemizonia parryi subsp. australis F. W. Peirson 1920-6-22 1352 Los Angeles Along Valley Boulevard at Bassett Comment
  RSA95056  Rafinesquia californica F. W. Peirson 1921-7-16 251 Los Angeles San Gabriel River 1372 Comment
  RSA95065  Hemizonia pungens F. W. Peirson 1919-8-30 1351 Los Angeles Desert between Mojave and Lancaster. 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
  RSA95179  Hieracium argutum F. W. Peirson 1918-10-24 1498 Los Angeles Big Santa Anita Canyon, San Gabriel Mountains. 1067 Comment
  RSA95223  Stephanomeria blairii F. W. Peirson 1923-4-9 3475 Los Angeles San Clemente Island: at Lemon Tank Comment
  RSA95224  Stephanomeria cichoriacea F. W. Peirson 1924-8-23 5050 Los Angeles West Fork of San Gabriel River. 411 Comment
  RSA95241  Microseris lindleyi F. W. Peirson 1923-4-12 3453 Los Angeles Wilson's Cove, San Clemente Island. 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
  RSA95347  Ceanothus oliganthus var. oliganthus F. W. Peirson 1925-3-18 5470 Los Angeles South slope of Newhall Grade, west end of San Gabriel Mts 381 Comment
  RSA95351  Ceanothus oliganthus F. W. Peirson 1927-3-19 7116 Los Angeles Seminole Hot Springs. Santa Monica Mts. Comment
  RSA95386  Sidalcea malviflora subsp. sparsifolia F. W. Peirson 1951-2-26 2064 Los Angeles Inglewood Comment
  RSA97152  Lomatium dasycarpum subsp. dasycarpum F. W. Peirson 1919-3-27 338 Los Angeles Foot of trail to Lukens Peak 609 Comment
  RSA97246  Lomatium vaginatum F. W. Peirson 1926-4-26 6647 Los Angeles Summit of Mint Canyon Grade, northwest part of San Gabriel Mts. Comment
  RSA97365  Sanicula crassicaulis F. W. Peirson 1919-5-18 431 Los Angeles South face of San Gabriel Mountains, Monrovia Canyon. Comment
  RSA97463  Perideridia parishii subsp. latifolia F. W. Peirson 817 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA98334  Berula erecta F. W. Peirson 1920-6-22 2206 Los Angeles Bassett, near El Monte. Comment
  RSA99341  Sambucus mexicana F. W. Peirson 1921-7-21 8650 Los Angeles Arraster Creek, San Gabriel Mountains. 945 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
  SD87527  Allium peninsulare Frank W. Peirson 1920-5-6 509 Los Angeles San Gabriel Mountains, Fish Canyon Falls. Comment
  SEINET10939154  Nemacladus sigmoideus Frank W. Peirson 1927-5-7 Peirson 7265 Los Angeles Comment
  RSA80478  Mimulus lewisii F. W. Peirson 1914-8-18 1133 Madera Shadow Lake, Sierra Nevada. 2668 Comment
  RSA0013780  Nuphar lutea subsp. polysepala F. W. Peirson 1914-8-15 1881 Madera Devils Post Pile, Sierra Nevada 2317 Comment
  RSA68797  Delphinium glaucum F. W. Peirson 1914-8-23 637 Madera Agnew's Trail, Sierra Nevada Comment
  RSA71853  Collomia linearis F. W. Peirson 1914-8-14 4194 Madera Devil's Post Pile 2287 Comment
  RSA77247  Hesperochiron pumilus F. W. Peirson 1914-08 983 Madera Devil s Post Pile, Sierra Nevada 2332 Comment
  RSA86190  Cystopteris fragilis F. W. Peirson 1934-7-18 11264 Madera Foot of Rainbow Falls, Middle Fork of San Joaquin River 2165 Comment
  RSA88700  Carex lenticularis var. lipocarpa F. W. Peirson 1934-7-18 11266 Madera Short way above the Rainbow Falls, middle fork of San Joaquin River. 2226 Comment
  SEINET7550698 Image available Carex athrostachya Frank W. Peirson 1934-7-18 11267 Madera Middle Fork San Joaquin River. 2316 Comment
  RSA87009  Pickeringia montana var. montana F. W. Peirson 1912-07 1998 Marin Mt. Tamalpais Comment
  RSA94177  Hemizonia lutescens F. W. Peirson 1925-10-3 6457 Marin Trail along N foot of Mt. Tamalpais. Comment
  PASA1283  Stellaria jamesiana Frank W. Peirson 1927-8-6 Mariposa Porcupine flat Comment
  PASA2867  Bryanthus breweri F. W. Peirson 1921-7-8 Y 92 Mariposa lake margins, Ten Lakes Comment
  PASA2869  Castilleja culbertsonii F. W. Peirson 1921-7-8 Y 90 Mariposa lake margins, Ten Lakes Comment
  RSA65047  Silene lemmonii F. W. Peirson 1927-8-5 7639 Mariposa South side of May Lake, Sierra Nevada 2485 Comment
  RSA72189  Epilobium ciliatum subsp. glandulosum F. W. Peirson 1927-8-6 7660 Mariposa Porcupine Flat, Sierra Nevada 2439 Comment
  RSA86352  Tsuga mertensiana F. W. Peirson 1930-8-15 9224 Mariposa Between Tuolumne Meadow and Lake Tenaya, just about at the Tuolumne-Mariposa county line. 2591 Comment
  PASA1835  Ligusticum grayi Frank W. Peirson 1930-8-15 Mariposa Lake Tenaya Region 2499 Comment
  PASA2753  Rosa californica F. W. Peirson 1921-6-27 Y 12 Mariposa Yosemite Valley, Sentinal Rock Comment
  PASA2754  Mimulus torreyi F. W. Peirson 1921-6-25 Y 10 Mariposa Little Yosemite, east of Merced River Comment
  PASA2783  Carex F. W. Peirson 1921-7-6 Y 77 Mariposa Yosemite Creek Comment
  PASA2784  Vaccinium occidentale F. W. Peirson 1921-7-6 Y 78 Mariposa Yosemite Creek Comment
  PASA2810  Lappula velutina F. W. Peirson 1921-7-9 Y 110 Mariposa Ten Lakes trail Comment
  PASA2830  Asarum hartwegii F. W. Peirson 1921-6-28 Y 30 Mariposa Tenaya Canyon Comment
  PASA2845  Thalictrum fendleri F. W. Peirson 1921-7-1 Y 42 Mariposa above Lake Merced Comment
  PASA2852  Sedum obtusatum F. W. Peirson 1921-7-1 Y 50 Mariposa granite slopes below Lake Merced Comment
  PASA2877  Gilia pungens F. W. Peirson 1921-7-7 Y 81 Mariposa west slope above largest of Ten Lakes Comment
  PASA2879  Cassiope mertensiana F. W. Peirson and A. M. Shaffer 1921-7-8 Y 98 Mariposa high ridge above Ten Lakes Comment
  PASA2882  Streptanthus tortuosus var. orbiculatus F. W. Peirson 1921-7-8 Y 96 Mariposa above ""Dream Lake"", Ten Lakes Comment
  POM93233  Aster ascendens F. W. Peirson 1927-8-5 7646 Mariposa Partial shade, Murphy Creek, Lake Tenaya Region 2485 Comment
  RSA0124941  Senecio integerrimus var. exaltatus F. W. Peirson 1927-8-6 7658 Mariposa Porcupine Flat, Sierra Nevada. 2438 Comment
  RSA100338  Heterocodon rariflorum F. W. Peirson 1930-8-17 9242 Mariposa Meadow opposite Glacier Point, floor of Yosemite Valley, Yosemite National Park 1220 Comment
  RSA65551  Arenaria aculeata F. W. Peirson 1927-8-5 7645 Mariposa North end of Lake Tenaya, Sierra Nevada. Comment
  RSA88675  Carex lenticularis var. lipocarpa F. W. Peirson 1930-8-15 9225 Mariposa In Murphy Creek, Lake Tenaya area, Sierra Nevada. 2515 Comment
  RSA91040  Lessingia leptoclada F. W. Peirson 1910-7-8 1258 Mariposa Yosemite Valley Comment
  RSA91850  Danthonia californica var. americana F. W. Peirson 1930-8-16 9235 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
  RSA95075  Microseris nutans F. W. Peirson 1927-8-6 7656 Mariposa Porcupine Flat, Sierra Nevada 2439 Comment
  CAS-BOT-BC82461  Arnica discoidea Frank W. Peirson 1923-7-7 3921 Mendocino 2 miles east of Mendocino City Comment
  HSC2960  Allium dichlamydeum F. W. Peirson 1925-8-10 6398 Mendocino Jug Handle Creek, 6 miles N of Mendocino City Comment
  POM87053  Veratrum fimbriatum Frank W. Peirson 1925-8-10 6402 Mendocino Jug Handle Creek, Mendocino County Comment
  RSA100202  Lonicera involucrata var. ledebourii F. W. Peirson 1925-8-10 6381 Mendocino Jug Handle Creek 6 miles north of Mendocino City. Comment
  RSA65602  Stellaria crispa F. W. Peirson 1925-8-10 6391 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA66704  Streptanthus barbiger F. W. Peirson 1923-7-7 3732 Mendocino 3 miles above Boonville Comment
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Aug 14 2013
  RSA77346  Ceanothus griseus F. W. Peirson 1925-8-10 6374 Mendocino Wood borders, 0.5 mile back from ocean, Jug Handle Creek, 6 miles N of Mendocino City Comment
  RSA80354  Conioselinum chinense F. W. Peirson 1925-8-10 6359 Mendocino Jug Handle Creek, 6 miles north of Mendocino City Comment
  RSA85216  Horkelia bolanderi F. W. Peirson 1925-8-10 6415 Mendocino 1 mile S of Albion Comment
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Sep 2 2010
  RSA87007  Myrica californica F. W. Peirson 1923-7-7 3703 Mendocino 2 miles east of Mendocino City. Comment
  UC501467  Bellis perennis Frank W. Peirson 1923-7-7 3889 Mendocino n of Westport Comment
  UCR51821  Triodanis biflora F. W. Peirson 1923-7-7 3870 Mendocino Navarro River, 10 miles below Wendling [=Navarro] Comment
  CAS-BOT-BC31426  Carex leptopoda Frank W. Peirson 1923-7-7 3663 Mendocino Ca 10 mi below Wendling, Navarro River. Comment
  CAS-BOT-BC342575  Madia F. W. Peirson 1941-7-23 13083 Mendocino Van Damme State Park 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
  PASA1883  Lythrum hyssopifolia Frank W. Peirson 1932-7-6 Mendocino Dimmick Memorial Park Navarro River Comment
  PASA2566  Delphinium variegatum Frank W. Peirson 1926-4-2 6564 Mendocino Foot of Hopland Grade Comment
  POM20533  Dicentra formosa subsp. formosa F. W. Peirson 1923-7-8 s.n. Mendocino Ten Mile Creek Comment
  POM87027  Eriogonum latifolium F. W. Peirson 1925-8-10 6405 Mendocino 5 miles south of Mendocino City. Comment
  RSA0074766  Sedum spathulifolium F. W. Peirson 1925-8-10 6396 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA0081584  Pyrola aphylla F. W. Peirson 1923-7-9 3798 Mendocino Grade after leaving Eel River on road to Coast. Comment
  RSA0098573  Spergularia villosa F. W. Peirson 1923-7-7 3719 Mendocino Navarro River, 10 miles below Wendling. Comment
  RSA66694  Dicentra formosa subsp. formosa F. W. Peirson 1923-7-9 3731 Mendocino Grade 7 miles north of Westport Comment
  RSA69290  Chlorogalum pomeridianum var. pomeridianum Frank W. Peirson 1932-7-6 10254 Mendocino Hales Grove Auto Camp. Comment
  RSA70141  Triteleia laxa F. W. Peirson 1923-7-7 3679 Mendocino 5 miles NW of Boonville Comment
  RSA70277  Juncus oxymeris F. W. Peirson 1932-7-6 10246 Mendocino Dimick Memorial Park. Navarro River. Comment
  RSA70585  Sisyrinchium bellum Frank W. Peirson 1923-7-7 3694 Mendocino On coast 1 mile north of the Navarro River. Comment
  RSA76021  Nemophila parviflora var. parviflora F. W. Peirson 1923-7-7 3816 Mendocino Navarro River. 8 miles below Wendling. Comment
  RSA79824  Penstemon heterophyllus subsp. purdyi F. W. Peirson 1923-7-8 3844 Mendocino Ten-mile River. Comment
  RSA80704  Circaea alpina subsp. pacifica F. W. Peirson 1941-7-23 s.n. Mendocino Van Damme State Park. Near sea level. 0 Comment
  RSA82335  Scutellaria californica F. W. Peirson 1923-7-6 3825 Mendocino 15 miles north of Cloverdale. Comment
  RSA83446  Mentha pulegium F. W. Peirson 1923-7-7 3838 Mendocino Just south of Wendling Comment
  RSA88647  Carex barbarae F. W. Peirson, Mabel Peirson 1926-4-1 6559 Mendocino Near Russian River, Hopland. Comment
  RSA88656  Carex bolanderi F. W. Peirson 1923-7-7 3664 Mendocino Below Wendling. Comment
  RSA91327  Lupinus arboreus var. arboreus F. W. Peirson 1923-7-9 3613 Mendocino 4 miles north of Westport. Comment
  RSA91662  Carex obnupta F. W. Peirson 1932-7-6 10244 Mendocino Dimick Memorial Park. Navarro River. Comment
  RSA91703  Gnaphalium palustre F. W. Peirson 1923-7-6 4233 Mendocino Indian Creek, southern Mendocino Co. Comment
  RSA92000  Polypogon interruptus F. W. Peirson 1932-7-6 10869 Mendocino Navarro River. Dimmick Memorial Park. Comment
  RSA93262  Heterotheca sessiliflora subsp. bolanderi F. W. Peirson 1925-8-10 6417 Mendocino 1 mile south of Albion 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
  RSA94390  Madia gracilis subsp. gracilis F. W. Peirson 1923-7-6 4151 Mendocino Indian Creek, southern Mendocino Co. Comment
  RSA95049  Sonchus asper F. W. Peirson 1932-7-6 10249 Mendocino Navarro River. Dimmick Memorial Park. Comment
  RSA97169  Garrya elliptica F. W. Peirson 1925-8-10 6375 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  JEPS12114  Solanum triflorum Frank W. Peirson 1926-6-25 6878 Modoc Warner Mountains, Cedarville Road, 1 mi e of summit Cedarville Road; Warner Mountains, Cedarville Road Comment
  RSA65696  Silene douglasii var. douglasii F. W. Peirson 1926-6-25 6898 Modoc Small side canyon 1 mile east of summit of Warner Mountains on Cedarville Road. Comment
  RSA69387  Thalictrum occidentale var. palousense F. W. Peirson 1926-6-25 6877 Modoc 1 mile east of summit of Cedarville Road, Warner Mountains Comment
  RSA73142  Navarretia intertexta F. W. Peirson 1926-6-25 6868 Modoc Cedarville Pass, Warner Mountains Comment
  RSA77589  Mertensia longiflora F. W. Peirson 1926-6-25 6895 Modoc 1 mile east of summit of Cedarville Road, 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
  POM98593  Navarretia intertexta subsp. propinqua F. W. Peirson 1926-6-25 6868 Modoc Cedarville Road, Warner Mountains. Comment
  POM98605  Potentilla gracilis var. flabelliformis F. W. Peirson 1926-6-25 6883 Modoc 1 mile east of summit of Cedarville Road, Warner Mountains Comment
  RSA0012468  Senecio serra var. serra F. W. Peirson 1926-6-25 6882 Modoc 1 mile east of summit of Warner Mts. on Cedarville Road. Comment
  RSA0029589  Geranium viscosissimum var. nervosum F. W. Peirson 1926-6-25 6864 Modoc Cedarville Road, west slope of Warner Mts. Comment
  RSA70435  Floerkea proserpinacoides F. W. Peirson 1926-6-25 6888 Modoc Small side canyon 1 mile east of summit of Warner Mountains on Cedarville Road. Comment
  RSA77089  Peraphyllum ramosissimum F. W. Peirson 1926-6-26 6905 Modoc Hill slope in broken country, between Alturas and Canby. Comment
  RSA77851  Callitriche verna F. W. Peirson 1926-6-26 6907 Modoc Between Alturas and Canby. Comment
  RSA98355  Berula erecta F. W. Peirson 1926-6-26 6903 Modoc between Alturas and Canby Comment
  CAS-BOT-BC154314  Phacelia peirsoniana Frank W. Peirson 1934-7-8 11161 Mono Summit of Sherwin Hill, along foot of rocky hill at the broad turnout space at summit of grade 1950 Comment
  CAS-BOT-BC20252  Carex filifolia var. erostrata F. W. Peirson 1935-7-18 11706 Mono Slate Creek. 3048 Comment
  CAS-BOT-BC21937  Carex heteroneura F. W. Peirson 1937-7-30 13609 Mono Lundy. 2468 Comment
  CAS-BOT-BC241607  Eriogonum baileyi var. baileyi Frank W. Peirson 1933-7-28 10713 Mono Summit Sherwin Hill 1950 Comment
  CAS-BOT-BC291556  Crepis intermedia Frank W. Peirson 1925-6-25 6052 Mono Rock Creek 2072 Comment
  CAS-BOT-BC74814  Rorippa palustris var. palustris Frank W. Peirson 1933-7-28 10709 Mono Rock Creek. 1371 Comment
  CAS-BOT-BC82168  Arnica chamissonis Frank W. Peirson 1925-6-25 6045 Mono Rock Creek 1828 Comment
  JEPS23654  Thelypodium crispum Frank W. Peirson 1937-8-1 12167 Mono Hot Creek region Long Valley 2103 Comment
  JEPS46364  Swertia puberulenta Frank W. Peirson 1927-7-26 7560 Mono between Deadman Creek and June Lake 2407 Comment
  JEPS48928  Calyptridium roseum Frank W. Peirson 1938-7-8 12433 Mono Hot Creek Region; near the gorge 2194 Comment
  JEPS56215  Eriogonum umbellatum var. chlorothamnus Frank Peirson 1934-7-8 11158 Mono Sherwin Hill 1950 Comment
  JEPS56727  Eriogonum microthecum var. ambiguum Frank W. Peirson 1934-7-8 11159 Mono Sherwin Hill 1950 Comment
  JEPS70802  Cryptantha humilis Frank W. Peirson 1934-7-11 11184 Mono e of Blue Lake; Virginia Lakes Basin 3017 Comment
  LA95397  Mimulus nanus var. mephiticus Frank W. Peirson; 1925-6-26 6095 Mono N of Mammoth, between Deadman Creek and June Lake 2377 Comment
  POM171914  Brickellia oblongifolia var. linifolia F. W. Peirson 1930-8-12 s.n. Mono Mono Lake Comment
  POM203904  Juniperus communis var. montana F. W. Peirson 1934-7-13 11198 Mono Slopes above the Virginia Lakes, east slope of Sierra Nevada 3079 Comment
  POM231946  Orthocarpus cuspidatus subsp. copelandii F. W. Peirson 1937-7-30 s.n. Mono Mill Creek (Lundy Canyon). 2470 Comment
  POM257996  Leymus triticoides F. W. Peirson 1937-8-1 s.n. Mono Long Valley; Plains in the Hot Creek Region 2104 Comment
  POM259169  Hordeum jubatum F. W. Peirson 1937-8-1 12995 Mono Long Valley 2104 Comment
  RSA100247  Valeriana californica F. W. Peirson 1927-7-29 7595 Mono Slate Creek, east slope of Sierra Nevada. 3018 Comment
  RSA65110  Eriogonum lobbii F. W. Peirson 1934-7-13 11206 Mono Above Red Lake, Virginia Lakes Basin, Sierra Nevada 3201 Comment
  RSA65179  Eriogonum elatum var. elatum F. W. Peirson 1927-7-27 7571 Mono North end of Silver Lake. 2256 Comment
  RSA65846  Eriogonum microtheca var. ambiguum F. W. Peirson 1934-7-8 11159 Mono Sherwin Hill 1951 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
  RSA66015  Eriogonum nudum var. scapigerum F. W. Peirson 1930-8-7 9123 Mono West shore of Ruby Lake, where stream from Mono Pass enters it. Rock Creek Lake Basin, Sierra Nevada 3399 Comment
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Feb 12 2020
  RSA66040  Eriogonum baileyi var. baileyi F. W. Peirson 1933-7-28 10713 Mono Summit of Sherwin Grade 1951 Comment
  RSA66850  Streptanthus tortuosus var. orbiculatus F. W. Peirson 1934-7-11 11182 Mono Mono County, rocky ridges and platforms above Moat Lake. 3171 Comment
  RSA69256  Kalmia polifolia subsp. microphylla F. W. Peirson 1934-7-12 11188 Mono Virginia Lakes, Sierra Nevada. 3201 Comment
  RSA70830  Arctostaphylos nevadensis F. W. Peirson 1925-6-27 6117 Mono West end of Gem lake, Sierra Nevada. 2820 Comment
  RSA71907  Ipomopsis aggregata subsp. formosissima F. W. Peirson 1932-7-22 10363 Mono steep slope along Robinson creek below Barney Lake, Twin lake Basin, east slope of Sierra Nevada 2439 Comment
  RSA71925  Linanthus inyoensis F. W. Peirson 1925-6-25 6074 Mono [Lower] Rock Creek, Sierra Nevada. 2073 Comment
  RSA72123  Epilobium latifolium F. W. Peirson 1927-7-25 7555 Mono Convict Lake, east slope of Sierra Nevada. 2317 Comment
  RSA72252  Camissonia claviformis subsp. integrior F. W. Peirson 1930-8-12 9199 Mono North shore of Mono Lake at foot of black pumice hill. 1966 Comment
  RSA73062  Leptosiphon ciliatus F. W. Peirson 1932-7-23 10381 Mono East slope of Sonora Pass, Sierra Nevada 2591 Comment
  RSA79872  Penstemon speciosus F. W. Peirson 1934-7-14 11210 Mono East of Blue Lake, Virginia Lakes Basin. East side of Sierra Nevada. 3018 Comment
  RSA79985  Castilleja nana F. W. Peirson 1927-7-29 7587 Mono Slate Creek, Sierra Nevada. 3201 Comment
  RSA80119  Mimulus nanus var. mephiticus F. W. Peirson 1933-7-31 10756 Mono Mono Craters. 2287 Comment
  RSA84509  Ribes aureum F. W. Peirson 1925-6-29 6162 Mono Cris Flat, West Fork Walker River Comment
  RSA85222  Horkelia fusca subsp. parviflora F. W. Peirson 1927-7-29 7593 Mono Slate Creek, east slope of Sierra Nevada. 3018 Comment
  RSA85560  Juniperus communis var. montana F. W. Peirson 1934-7-13 11198 Mono Slopes above the Virginia Lakes, east slope of Sierra Nevada 3079 Comment
  RSA85614  Potentilla pseudosericea F. W. Peirson 1934-7-13 11203 Mono In cirque above Red Lake, Virginia Lakes Basin, Sierra Nevada 3232 Comment
  RSA85762  Potentilla glandulosa var. nevadensis F. W. Peirson 1925-6-25 6063 Mono [Lower] Rock Creek. 2073 Comment
  RSA85806  Potentilla biennis F. W. Peirson 1925-6-26 6105 Mono Silver Lake. 2195 Comment
  RSA86622  Purshia tridentata var. tridentata F. W. Peirson 1925-6-27 6118 Mono W end of Gem Lake. Sierra Nevada. 2835 Comment
  RSA88688  Carex pellita F. W. Peirson 1925-6-25 6081 Mono Rock Creek 2073 Comment
  RSA94718  Packera subnuda var. subnuda F. W. Peirson 1927-7-29 7594 Mono Slate Creek near Saddlebag Lake, Sierra Nevada. 3017 Comment
  SBBG29162  Oxytheca dendroidea subsp. dendroidea F. W. Peirson 1925-6-25 6038 Mono grade up volcanic tableland [in 1925, "grade" = Rock Creek Road) Comment
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Feb 8 2013
  SBBG98317  Brickellia microphylla F. W. Peirson 1934-7-30 Mono Sherwin Hill, W of rd 1950 Comment
  SBBG98345  Antennaria rosea F. W. Peirson 1925-6-28 6130 Mono Reverse Crk, Silver Lake region 2194 Comment
  SD87667  Alopecurus aequalis Frank W. Peirson 1937-7-30 12993 Mono Lundy Canyon (Mill Creek). In moist soil near stream at camp. 2469 Comment
  SD87804  Erigeron coulteri Frank W. Peirson 1925-6-28 6143 Mono Reverse Creek, Silver Lake Region 2190 Comment
  UC1077135  Phlox Frank W. Peirson 1934-7-14 11225 Mono n part Virginia Lakes Basin 3017 Comment
  UC501521  Zigadenus venenosus var. venenosus Frank W. Peirson 1932-7-22 Mono below Barney Lake (Twin Lake Canyon, grom Bridgeport) Comment
  UC501598  Draba lemmonii var. lemmonii Frank W. Peirson 1930-8-5 9090 Mono Mono Pass Mono Pass (Inyo-Fresno Counties Line) 3657 Comment
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Jan 13 2019
  UC570565  Lewisia pygmaea Frank W. Peirson 1935-7-18 11532 Mono Slate Creek 3108 Comment
  UC599261  Ipomopsis depressa Frank W. Peirson 1938-7-10 12462 Mono directly below the Devernois Ranch White Mtns 1432 Comment
  UC638464  Potentilla pseudosericea Frank W. Peirson 1934-7-13 11203 Mono in the cirque above Red Lake (Virginia Lakes Basin); , above Red Lake 3230 Comment
  UCR136637  Castilleja linariifolia F. W. Peirson 1925-6-26 6099 Mono Sierra Nevada Mtns., Silver Lake 2195 Comment
  CAS-BOT-BC117039  Carex straminiformis Frank Warrington Peirson 1934-7-8 11166 Mono Along Owens River. 2042 Comment
  JEPS41410  Erigeron aphanactis var. aphanactis Frank W. Peirson 1925-6-25 6031 Mono grade up volcanic tableland Round Valley Comment
  JEPS4247  Collinsia parviflora Frank W. Peirson 1935-7-18 Mono near site of old saw mill Slate Creek 3017 Comment
  JEPS57996  Oxytheca dendroidea subsp. dendroidea Frank W. Peirson c. 1918 Mono 30 to 35 mi n Bishop (Crooked Creek which flows into Owens River); Owen River, Crooked Creek Comment
  JEPS69065  Eriastrum wilcoxii Frank W. Peirson 1933-7-31 10755 Mono n slope Mono Craters 2286 Comment
  PASA1970  Lappula floribunda Frank W. Peirson 1932-6-22 Mono Twin Lake Basin 2438 Comment
  POM175469  Frasera puberulenta F. W. Peirson 1927-6-26 7560 Mono Volcanic mountains between Deadman Creek and June Lake. 2439 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
  POM203742  Oxytheca dendroidea F. W. Peirson 1934-7-8 s.n. Mono At foot of Whisky Creek, Owens River. 2043 Comment
  POM203896  Hackelia micrantha F. W. Peirson 1934-7-10 11170 Mono Trail above Blue lake, Virginia Lakes Basin. 3079 Comment
  POM87015  Cheilanthes gracillima F. W. Peirson 1925-6-27 6127 Mono Rush Creek 2439 Comment
  RSA0005467  Monardella linoides F. W. Peirson 1933-7-29 10727 Mono Crooked Creek Canyon, Owens Valley, Comment
  RSA0036075  Cassiope mertensiana Frank W. Peirson 1925-6-27 6126 Mono Rush Creek 2926 Comment
  RSA0041821  Penstemon rydbergii var. oreocharis F. W. Peirson 1925-6-25 6064 Mono Rock Creek. 2073 Comment
  RSA0125866  Anelsonia eurycarpa F. W. Peirson 1934-7-15 11201 Mono Virginia Lakes Basin. 3232 Comment
  RSA101792  Pastinaca sativa F. W. Peirson 1930-8-12 9184 Mono Mono Lake 1966 Comment
  RSA112105  Astragalus lentiginosus var. ineptus F. W. Peirson 1933-7-31 10758 Mono North shore Mono Lake. 1966 Comment
  RSA65680  Lewisia pygmaea F. W. Peirson 1935-7-18 11532 Mono Mono County: Slate Creek. 3110 Comment
  RSA65774  Cleome sparsifolia F. W. Peirson 1933-7-31 10761 Mono North shore Mono Lake. Comment
  RSA66212  Arabis holboellii var. retrofracta F. W. Peirson 1934-7-10 11175 Mono Near Cooney Lake, Virginia Lakes Basin. 3140 Comment
  RSA66768  Arabis divaricarpa F. W. Peirson 1937-7-31 12152 Mono Mill Creek (Lundy Canyon). 2470 Comment
  RSA66828  Thelypodium crispum F. W. Peirson 1934-7-13 11200 Mono Shores of Virginia Lake, Virginia Lakes Basin 2988 Comment
  RSA68735  Fritillaria atropurpurea Frank W. Peirson 1935-7-18 11530 Mono Slate Creek 3140 Comment
  RSA68799  Delphinium glaucum F. W. Peirson 1934-7-16 11237 Mono W end of Blue L Lake, Virginia Lakes Basin 3018 Comment
  RSA69589  Triglochin maritima F. W. Peirson 1925-6-28 6141 Mono Reverse Creek, Sierra Nevada. 2287 Comment
  RSA69699  Mentzelia congesta F. W. Peirson 1925-6-25 6043 Mono Rock Creek. 1829 Comment
  RSA70078  Platanthera leucostachys Frank W. Peirson 1934-7-16 11234 Mono Just above the gorge above Blue Lake, Virginia Lakes Basin. 3034 Comment
  RSA72124  Epilobium latifolium F. W. Peirson 1934-7-13 11197 Mono Along creek above Virginia Lakes, Virginia Lakes Basin 3201 Comment
  RSA72210  Camissonia tanacetifolia subsp. tanacetifolia F. W. Peirson 1925-6-29 6150 Mono Summit of grade north of Mono Lake 2439 Comment
  RSA72639  Wyethia mollis F. W. Peirson 1925-6-26 6089 Mono Northern part of Volcanic Tableland. Comment
  RSA75341  Phacelia bicolor F. W. Peirson 1925-6-25 6068 Mono Rock Creek. 2073 Comment
  RSA75346  Phacelia bicolor F. W. Peirson 1938-7-9 12446 Mono Along the east base of Mono Craters. 2134 Comment
  RSA75362  Camissonia boothii subsp. boothii F. W. Peirson 1938-7-9 12449 Mono 1.5 miles southeast of Benton. 1921 Comment
  RSA77249  Hesperochiron californicus F. W. Peirson 1938-7-8 s.n. Mono Near the windmill, Hot Creek region. 2134 Comment
  RSA79763  Penstemon floridus subsp. floridus F. W. Peirson 1925-6-26 6088 Mono North of Tom's Place, Rock Creek. 2134 Comment
  RSA79859  Penstemon speciosus F. W. Peirson 1925-6-29 6148 Mono Grade north of Mono Lake. 2210 Comment
  RSA79978  Castilleja pilosa subsp. jusselii F. W. Peirson 1932-7-23 10392 Mono Sierra Nevada, open area east slope of Sonora Pass. alt 9000ft 2744 Comment
  RSA85039  Pellaea breweri F. W. Peirson 1925-6-27 6128 Mono Rush Creek, Sierra Nevada 2287 Comment
  RSA85772  Sibbaldia procumbens F. W. Peirson 1925-6-27 6124 Mono Rush Creek. 2896 Comment
  RSA90255  Astragalus lentiginosus var. ineptus F. W. Peirson 1934-7-10 11169 Mono Trail west of Blue Lake, Virginia Lakes Basin. 3079 Comment
  RSA90712  Astragalus johannis-howellii F. W. Peirson 1938-7-8 12435 Mono Near the Hot creek Gorge, Ownes Valley 2195 Comment
  RSA90728  Astragalus monoensis F. W. Peirson 1925-6-26 6093 Mono Hills north of Mammouth. 2409 Comment
  RSA90732  Astragalus canadensis var. brevidens F. W. Peirson 1930-8-12 9197 Mono North shore of Mono Lake 1966 Comment
  RSA90866  Carex leporinella F. W. Peirson 1934-7-15 11227 Mono Cirque above Red Lake, Virginia Lakes Basin 3232 Comment
  RSA90924  Erigeron compositus F. W. Peirson 1934-7-10 11176 Mono Near Cooney Lake, Virginia Lakes Basin 3140 Comment
  RSA90972  Erigeron coulteri F. W. Peirson 1935-8-4 11653 Mono 2 miles SE of Sonora Pass. 2622 Comment
  RSA91478  Scirpus nevadensis F. W. Peirson 1937-8-1 12165 Mono Long Valley, Hot Creek region. 2104 Comment
  RSA92120  Carex nebrascensis F. W. Peirson 1925-6-28 6132 Mono Reverse Creek. 2287 Comment
  RSA92545  Salix exigua F. W. Peirson 1925-6-29 6163 Mono Cris Flat. W fork of Walker River. Comment
  RSA92664  Eriophyllum lanatum var. integrifolium F. W. Peirson 1933-7-31 10757 Mono Mono Craters. 2287 Comment
  RSA92855  Chaenactis macrantha F. W. Peirson 1938-7-10 12456 Mono Below the old Devernois Ranch, west slope of White Mountains. 1463 Comment
  RSA93110  Erigeron aphanactis var. aphanactis F. W. Peirson 1937-8-1 12163 Mono Long Valley, Hot Creek region. 2104 Comment
  RSA93971  Pyrrocoma racemosa var. paniculata F. W. Peirson 1933-7-29 10748 Mono River road at foot of Whisky Creek, Owens River. Comment
  RSA94145  Hulsea vestita subsp. vestita F. W. Peirson 1925-6-26 6097 Mono High hills S of Mono Valley. 2439 Comment
  RSA94934  Tetradymia glabrata F. W. Peirson 1938-7-9 12448 Mono About 19 miless W or NW of Benton. 2073 Comment
  RSA94971  Tetradymia canescens F. W. Peirson 1937-8-1 12161 Mono Long Valley, Hot Creek region. 2104 Comment
  RSA97386  Cicuta douglasii F. W. Peirson 1927-7-27 7575 Mono Slope west of camp at lower end of lake, Silver Lake 2256 Comment
  RSA97388  Cicuta douglasii F. W. Peirson 1930-8-12 9181 Mono Mono Lake, back of lake shore 1966 Comment
  SD87620  Erigeron algidus Frank W. Peirson 1934-7-16 11244 Mono Virginia Lakes Basin 3020 Comment
  SD87692  Penstemon menziesii Frank W. Peirson 1925-6-27 6129 Mono Rush Creek 2362 Comment
Read comments
Jun 28 2014
  SEINET3888236  Smilacina stellata Frank W. Peirson 1935-8-4 11651 Mono Sonora Pass Region. About 2 miles southeast of Pass. Abundant around Willow thickets near stream.; 0 2621 Comment
  SEINET7587609 Image available Carex epapillosa F. W. Peirson 1935-8-4 11732 Mono Sonora Pass Region. 2743 Comment
  UC501528  Anemone drummondii Frank W. Peirson 1932-7-23 10393 Mono summit Sonora Pass; w. edge Mono Co., Sonora Pass 2933 Comment
  UC511737  Collomia linearis Frank W. Peirson 1933-7-29 10742 Mono in moist ground along Hilton Creek; Owens River 2042 Comment
  UC511875  Oxytheca dendroidea subsp. dendroidea Frank W. Peirson 1933-7-29 10732 Mono slopes about Whisky Creek Whisky Creek 2042 Comment
  UC511900  Abronia turbinata Frank W. Peirson 1933-7-27 10738 Mono about Whisky Creek; Owens river 2042 Comment
  UC599242  Hesperostipa comata Frank W. Peirson 1938-7-8 12432 Mono between Owens River and the Boulevard; vicinity of Whisky Creek 2072 Comment
  UC638463  Potentilla flabellifolia Frank W. Peirson 1934-7-15 11230 Mono along stream flowing into Red Lake Viginia Lakes Basin, stream flowing into Red Lake 3169 Comment
  RSA445286  Satureja douglasii F. W. Peirson 1923-6-27 3827 Monterey Seventeen Mile Drive. Monterey. Comment
  RSA68958  Plantago maritima F. W. Peirson 1923-7-27 3856 Monterey near Pacific Grove, low sea bluffs Comment
  JEPS12882  Symphoricarpos albus var. laevigatus Frank W. Peirson 1936-7-13 11832 Monterey Nacimiento Creek San Antonio River (branch of San Antonio River) 518 Comment
  PASA1690  Lessingia glandulifera var. pectinata Frank W. Peirson 1923-6-26 Monterey Auto Camp 3 miles from Monterey on the Salinas Road Comment
  POM20534  Boykinia occidentalis F. W. Peirson 1923-6-27 s.n. Monterey Redwood Creek. Comment
  RSA68625  Calochortus uniflorus Frank W. Peirson 1912-6-27 1666 Monterey Monterey coast Comment
  RSA69856  Juncus occidentalis F. W. Peirson 1923-6-28 3672 Monterey Road from Monterey to Salinas. Comment
  RSA70484  Oxalis oregana F. W. Peirson 1923-6-27 4071 Monterey Redwood Creek at Notrey's [Notley's] Landing. Comment
  RSA73048  Leptosiphon androsaceus F. W. Peirson 1925-3-24 5655 Monterey Road from Coalinga to Parkfield 915 Comment
  RSA77725  Viola sempervirens F. W. Peirson 1923-6-27 3782 Monterey Redwood Creek at Notrey's [Notley's] Landing. Comment
  RSA85201  Horkelia cuneata F. W. Peirson 1923-6-27 3746 Monterey 3 miles up the Salinas road from Monterey. Comment
  RSA90214  Astragalus oxyphysus F. W. Peirson 1912-6-27 1999 Monterey Monterey Comment
  RSA92242  Calycadenia truncata subsp. truncata F. W. Peirson 1936-7-13 11831 Monterey Nacimiento Creek; a branch of San Antonio River 518 Comment
  RSA93390  Symphoricarpos albus var. laevigatus F. W. Peirson 1936-7-13 11832 Monterey Stream of Nacimiento Creek, a branch of San Antonio River. 518 Comment
  RSA94823  Hypochaeris radicata F. W. Peirson 1923-6-26 5287 Monterey About 3 miles from Monterey on road to Salinas. Comment
  SD87772  Horkelia cuneata var. cuneata F. W. Peirson 1923-6-27 3746 Monterey At auto camp about 3 miles up the Salinas Road Comment
  RSA85822  Cupressus sargentii F. W. Peirson, Mabel Peirson 1926-4-3 6623 Napa Northern edge of Napa County on Middletown Road Comment
  RSA80689  Boisduvalia densiflora var. densiflora F. W. Peirson 1928-7-4 7952 Napa Summit of Mt. Helena Grade 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
  SEINET10840484  Heterocodon rariflorum Frank W. Peirson 1931-8-10 Peirson 9560 Nevada FLAT AT W END OF DONNER LAKE AT EDGE OF STREAM 9560 Comment
  JEPS42415  Ceanothus oliganthus var. sorediatus Frank W. Peirson 1925-4-10 Orange along rd Silverado Canyon 609 Comment
  PASA1544  Viola sheltonii Frank W. Peirson 1923-5-6 Orange Santiago Peak 1676 Comment
  PASA2267  Ribes roezlii Frank W. Peirson 1923-5-6 Orange Santiago Peak 1645 Comment
  PASA2514  Ceanothus sorediatus Frank W. Peirson 1925-4-11 Orange Silverado Canyon, Santa Ana Mountains 914 Comment
  POM254669  Atriplex watsonii F. W. Peirson 1924-2-10 4533 Orange Corona Del Mar Comment
  RSA397818  Dudleya multicaulis F. W. Peirson 1922-5-18 3071 Orange Santa Ana River. 122 Comment
  RSA65356  Atriplex truncata F. W. Peirson 1924-8-29 5073 Orange 4 miles south of Santa Ana. Comment
  RSA65358  Atriplex canescens F. W. Peirson 1924-8-29 4528 Orange Corona Del Mar Comment
  RSA65401  Atriplex californica F. W. Peirson 1923-3-25 3414 Orange Aliso Creek, near Laguna Beach. Comment
  RSA66687  Cleome isomeris F. W. Peirson 1924-2-10 4530 Orange southward from Corona del Mar. Comment
  RSA66771  Cleome isomeris F. W. Peirson 1924-2-10 4529 Orange Balboa Beach, mainland near bridge Comment
  RSA68988  Plantago ovata var. insularis F. W. Peirson 1924-5-31 4668 Orange 5 miles southeast of Laguna Beach. Comment
  RSA69967  Abronia villosa var. aurita F. W. Peirson 1924-8-29 5060 Orange Santa Ana Comment
  RSA70159  Dichelostemma capitatum subsp. capitatum F. W. Peirson 1924-5-31 4672 Orange 5 miles southeast of Laguna Beach. Comment
  RSA75439  Camissonia ignota F. W. Peirson 1923-5-6 3505 Orange Trail to Santiago Peak, Santa Ana Ms., from Trabuco Canyon. 1067 Comment
  RSA77178  Malvella leprosa F. W. Peirson 1924-5-31 4646 Orange Laguna Canyon, near Laguna Beach. 107 Comment
  RSA83424  Dudleya lanceolata F. W. Peirson 1924-5-31 4673 Orange 5 miles southeast of Laguna Beach. Comment
  RSA85017  Polypodium californicum F. W. Peirson 1925-4-11 5729 Orange slope above mill, in Silverado Canyon, Santa Ana Mountains 914 Comment
  RSA87135  Leptochloa fusca subsp. uninervia F. W. Peirson 1924-8-29 5062 Orange Santa Ana. Comment
  SD70409  Viola sheltonii Frank W. Peirson 1923-5-6 3496 Orange along trail from Trabuco Canyon. Santiago Peak 1676 Comment
  SD82797  Ceanothus papillosus var. roweanus F. W. Peirson 1923-5-6 3492 Orange Trail from Trabuco Canyon to Santiago Peak, Santa Ana Mountains (in Holy Jim Canyon) 990 Comment
  SD87794  Dudleya edulis F. W. Peirson 1924-5-31 4674 Orange 5.0 miles south of Laguna. Comment
  UCR136650  Solanum nigrum F. W. Peirson 1924-2-9 4523 Orange South Coast, between Wintersburg and the sea 9 Comment
  RSA70034  Salicornia bigelovii F. W. Peirson 1924-8-29 5088 Orange 2.5 miles from Balboa on road inland along creek. Comment
  RSA71116  Calystegia sepium subsp. limnophila F. W. Peirson 1926-9-26 7086 Orange Wintersberg. Near to sea level. Comment
  RSA79903  Physalis philadelphica F. W. Peirson 1924-10-19 5239 Orange Wintersberg Comment
  RSA80733  Nicotiana glauca F. W. Peirson 1923-3-18 5306 Orange Santa Ana River Canyon. 137 Comment
  RSA86962  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1923-3-18 s.n. Orange Cypress Canyon, Santa Ana Mts. 122 Comment
  RSA91901  Paspalum distichum F. W. Peirson 1924-5-31 4648 Orange Laguna Canyon, near Laguna Beach 106 Comment
  RSA93100  Corethrogyne filaginifolia F. W. Peirson 1924-8-29 5087 Orange Inland 2.5 miles from Balboa Beach Comment
  RSA93224  Conyza bonariensis F. W. Peirson 1924-8-29 5063 Orange Santa Ana Comment
  RSA93824  Aster hesperius F. W. Peirson 1924-10-19 5241 Orange Wintersberg Comment
  RSA93934  Ambrosia acanthicarpa F. W. Peirson 1919-11-8 5275 Orange Road south of Arch Beach. Comment
  RSA94100  Deinandra fasciculata F. W. Peirson 1924-8-29 5064 Orange Santa Ana Comment
  RSA94955  Malacothrix saxatilis var. tenuifolia F. W. Peirson 1919-11-8 1482 Orange Aliso Creek. 0 Comment
  SD87779  Cyperus niger F. W. Peirson 1924-10-19 5231 Orange Wintersberg; at wates edge in ditches. Comment
  CAS-BOT-BC228465  Plagiobothrys mollis Frank W. Peirson 1926-6-21 6803 Plumas Open strip of land between forest and lake on the N shore, Lake Almanor 1447 Comment
  RSA73357  Clarkia stellata F. W. Peirson 1926-6-21 6798 Plumas Open flat strip along shore of Lake Almanor. Comment
  RSA82354  Agastache urticifolia F. W. Peirson 1926-6-21 6797 Plumas South shore Lake Almanor. Comment
  RSA83370  Monardella odoratissima subsp. pallida F. W. Peirson 1926-6-21 6790 Plumas Lake Almanor Comment
  CAS-BOT-BC103904  Salix exigua Frank W. Peirson 1933-4-15 10650 Riverside Whitewater River, 4 1/2 miles above the bridge 701 Comment
  CAS-BOT-BC128450  Salix lasiolepis var. lasiolepis Frank W. Peirson 1933-4-14 10648 Riverside Banning - Idlewild Road 1524 Comment
  CAS-BOT-BC191854  Chorizanthe corrugata Frank W. Peirson 1927-4-12 7175 Riverside Painted Canyon, near camp at forks Comment
  CAS-BOT-BC202502  Argythamnia serrata F. W. Peirson 1922-12-28 4437 Riverside Andreas Canyon, Colorado Desert 243 Comment
  CAS-BOT-BC249896  Eriogonum fasciculatum var. flavoviride Frank W. Peirson 1928-4-24 7907 Riverside Cottonwood Spring Comment
  CAS-BOT-BC255667  Poa bigelovii F. W. Peirson 1921-3-22 2392 Riverside Murray Canyon, Palm Springs Region, Colorado Desert 457 Comment
  CAS-BOT-BC330346  Pentachaeta aurea F. W. Peirson 1938-5-30 s.n. Riverside Slopes S of the Shell Gas Station; Thomas Mountain, Hemet Valley 1402 Comment
  CAS-BOT-BC367545  Lasthenia microglossa F. W. Peirson 1919-4-14 1376 Riverside Murray Canyon near Palm Springs 487 Comment
  CAS-BOT-BC419651  Eschscholzia parishii Frank W. Peirson 1926-2-22 s.n. Riverside Thousand Palm Canyon near Indio Comment
  CAS-BOT-BC90197  Artemisia californica Frank W. Peirson 1922-12-27 3338 Riverside between the forks, Andreas Canyon, Palm Springs region, Colorado Desert 609 Comment
  JEPS13477  Deinandra kelloggii Frank W. Peirson 1925-5-20 6011 Riverside Aguanga Comment
  PASA1050  Lathyrus alefeldii Frank W. Peirson 1922-4-28 Riverside Leach canyon, Elsinore Region 548 Comment
  PASA1116  Lotus subpinnatus Frank W. Peirson 1930-5-10 Riverside Hemet Plateau, along boulevard opposite March field 457 Comment
  PASA1350  Peucephyllum schottii Frank W. Peirson 1930-5-29 Riverside Painted Canyon Comment
  PASA2513  Ceanothus sorediatus Frank W. Peirson 1931-5-30 Riverside Santiago Peak 1219 Comment
  PASA2571  Myosurus aristatus Frank W. Peirson 1922-5-20 3035 Riverside Helmet Valley, San Jacinto Mtns. 1386 Comment
  PASA307  Nemacladus rigidus Frank W. Peirson 1928-4-24 Riverside Cottonwood Spring, 1/2 mile below spring in broad sandy wash Comment
Read comments
Jun 24 2016
  PASA395  Capsella elliptica Frank W. Peirson 1921-4-11 Riverside Murray Canyon, Palm Springs Region Comment
  PASA949  Senecio monoensis Frank W. Peirson 1928-4-23 Riverside 2 1/2 miles below Cottonwood Spring Comment
  POM228765  Pectis papposa F. W. Peirson 1937-11-27 12245 Riverside La quinta, about sea level. Comment
  RSA0017272  Gilia ochroleuca subsp. exilis F. W. Peirson 1919-4-15 921 Riverside Whitewater Grade above Cabazon, San Gorgonio Pass. Comment
  RSA409772  Cuscuta salina F. W. Peirson 1924-6-21 s.n. Riverside South of Elsinore Comment
  RSA462211  Dodecatheon redolens F. W. Peirson 1924-7-27 4999 Riverside Deer Springs, San Jacinto Mountains. Comment
  RSA523971  Mimulus diffusus F. W. Peirson 1929-5-4 s.n. Riverside Summit of St John's grade. 793 Comment
  RSA64581  Eriogonum reniforme F. W. Peirson 1928-4-24 7911 Riverside Cottonwood Springs, northern Colorado Desert Comment
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Oct 9 2010
  RSA64621  Eriogonum thomasii F. W. Peirson 1926-1-31 6490 Riverside Dos Palmas [Spring], Colorado Desert. Comment
  RSA64763  Eriogonum inflatum var. deflatum F. W. Peirson 1932-11-26 9660 Riverside Thousand Palms Comment
  RSA64889  Oxytheca emarginata F. W. Peirson 1922-5-21 3034 Riverside Hemet Valley, San Jacinto Mts. 1372 Comment
  RSA64893  Oxytheca caryophylloides F. W. Peirson 1924-7-29 5019 Riverside 1 miles west of Fullers Mill on Banning to Idyllwild Road, San Jacinto Mts. 1768 Comment
  RSA64894  Oxytheca trilobata F. W. Peirson 1922-5-21 5349 Riverside Hemet Valley, San Jacinto Mts 1372 Comment
  RSA65145  Eriogonum fasciculatum F. W. Peirson 1928-4-24 7907 Riverside Cottonwood Spring, west end of Eagle Mtns. Comment
  RSA65246  Chorizanthe rigida F. W. Peirson 1922-4-11 2863 Riverside Deep Canyon Wash, Coachella Valley 244 Comment
  RSA65259  Chorizanthe polygonoides var. longispina F. W. Peirson 1922-5-19 3025 Riverside 3 miles northeast of Murrieta. Comment
  RSA65388  Atriplex hymenelytra F. W. Peirson 1926-2-22 6502 Riverside Thousand-Palms Canyon; Coachella Valley Comment
  RSA65390  Atriplex hymenelytra F. W. Peirson 1924-12-30 5415 Riverside Thousand-Palms Canyon, edge of Coachella Valley. 122 Comment
  RSA65411  Cistanthe ambigua F. W. Peirson 1926-2-22 6512 Riverside 0.5 mile north of camp in Palm Grove, Thousand-Palm Canyon, Coachella Valley. Comment
  RSA65628  Callitriche marginata F. W. Peirson 1922-4-29 2943 Riverside South of Lake Elsinore. 381 Comment
  RSA65708  Silene antirrhina F. W. Peirson 1919-4-14 5321 Riverside Murray Canyon near Palm Springs 381 Comment
  RSA65716  Loeflingia squarrosa F. W. Peirson 1922-4-9 4156 Riverside Palm Canyon Region, near Palm Springs. Comment
  RSA65823  Descurainia pinnata subsp. glabra F. W. Peirson 1921-3-23 2592 Riverside Deep Canyon, Coachella Valley. Comment
  RSA66027  Eriogonum gracile var. gracile F. W. Peirson 1922-12-26 3334 Riverside Cabazon, W edge of Colorado Desert. Comment
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Mar 13 2011
  RSA66029  Eriogonum gracile var. gracile F. W. Peirson 1924-7-29 5029 Riverside Banning to Idyllwild road, San Jacinto Mountains. 1570 Comment
  RSA66733  Lepidium lasiocarpum F. W. Peirson 1920-2-15 2834 Riverside Palm Springs, Tahquitz Camp. Comment
  RSA66785  Thysanocarpus laciniatus F. W. Peirson 1921-3-22 4187 Riverside Murray Canyon, Near Palm Springs. 366 Comment
  RSA67110  Myosurus minimus subsp. apus F. W. Peirson 1922-5-19 4171 Riverside Menifee Valley Comment
  RSA67347  Lepidium nitidum F. W. Peirson 1918-03 2327 Riverside Whitewater Grade, NW corner of Colorado Desert. Comment
  RSA67365  Guillenia lasiophylla F. W. Peirson 1922-4-9 2918 Riverside Andreas Canyon near Palm Springs, Coachella Valley. 671 Comment
  RSA68342  Lepidium lasiocarpum F. W. Peirson 1916-04 679 Riverside Near Palm Springs. Comment
  RSA68981  Plantago ovata var. fastigiata F. W. Peirson 1926-2-22 6510 Riverside Thousand-Palms Canyon; Coachella Valley Comment
  RSA68986  Plantago ovata var. fastigiata F. W. Peirson 1930-3-29 8693 Riverside Painted canyon, near Mecca. Comment
  RSA69419  Eustoma exaltatum F. W. Peirson 1919-4-14 879 Riverside Palm Canyon, near Palm Springs Comment
  RSA69725  Lemna gibba F. W. Peirson 1922-5-19 3018 Riverside Hemet Valley, San Jacinto Mountains. 1341 Comment
  RSA70003  Tidestromia oblongifolia F. W. Peirson 1937-11-27 12319 Riverside La Quinta, Coachella Valley. At sea-level. 0 Comment
  RSA70124  Dichelostemma capitatum subsp. pauciflorum F. W. Peirson 1921-3-22 s.n. Riverside Murray Canyon, Near Palm Springs. 366 Comment
  RSA70189  Allium parishii F. W. Peirson 1928-4-25 7918 Riverside Western edge of broken country northwest of Cottonwood Springs, southern Mojave Desert. Comment
  RSA70334  Asclepias californica F. W. Peirson 1922-4-29 4255 Riverside Leach Canyon. ( base of Santa Ana Mts., near Elsinore) 534 Comment
  RSA70427  Ditaxis lanceolata F. W. Peirson 1921-3-23 2805 Riverside Deep Canyon Wash, 12 miles southeast of Palm Springs. 152 Comment
  RSA70429  Ditaxis lanceolata F. W. Peirson 1914-04 2042 Riverside Whitewater, Nw corner of Colorado Desert, River Co. Comment
  RSA70499  Geranium carolinianum F. W. Peirson 1922-4-10 2859 Riverside Murray Canyon, near Palm Springs. 305 Comment
  RSA70555  Croton californicus F. W. Peirson 1932-11-26 9661 Riverside Thousand Palms. 122 Comment
  RSA70867  Arctostaphylos pringlei subsp. drupacea F. W. Peirson 1921-3-21 2386 Riverside Gordon Trail from Andreas Canyon, east base of San Jacinto Mts. 1829 Comment
  RSA72193  Oenothera californica subsp. californica F. W. Peirson 1914-04 387 Riverside Beaumont, San Gorgonio Pass. Comment
  RSA72245  Camissonia claviformis subsp. aurantiaca F. W. Peirson 1914-04 785 Riverside Whitewater at head of Coachella Valley. Comment
  RSA73057  Leptosiphon lemmonii F. W. Peirson 1938-5-30 12414 Riverside Thomas Mountain, Hemet Valley. 1402 Comment
  RSA73087  Linanthus dianthiflorus subsp. dianthiflorus F. W. Peirson 1922-5-20 4471 Riverside Hemet Valley, San Jacinto Mountains. 1371 Comment
  RSA73089  Linanthus dianthiflorus subsp. dianthiflorus F. W. Peirson 1922-4-30 2930 Riverside St. John's Grade, Baustista Creek, south of Hemet. 762 Comment
  RSA73683  Linanthus aureus F. W. Peirson 1928-4-23 7887 Riverside 2.5 miles below cottonwood Springs, Riverside County Comment
  RSA74795  Phacelia pedicellata F. W. Peirson 1920-2-16 970 Riverside Palm Canyon Stream, Near foot of Alkali Canyon east of Palm Canyon, Riverside County. Comment
  RSA75387  Camissonia cardiophylla F. W. Peirson 1930-3-29 8687 Riverside Painted canyon, near Mecca. Comment
  RSA75419  Oenothera deltoides subsp. deltoides F. W. Peirson 1922-4-6 782 Riverside Near the White Water Bridge, head of Coachella Valley. Comment
  RSA76032  Pholistoma membranaceum F. W. Peirson 1918-03 5304 Riverside Whitewater Grad, E of Beaumont. Comment
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Feb 3 2013
  RSA766144  Eriogonum thomasii F. W. Peirson 1930-3-29 1897 Riverside Painted Canyon Comment
  RSA76937  Simmondsia chinensis F. W. Peirson 1920-12-29 8415 Riverside Point of Rocks, 1.5 miles east of Whitewater Station, head of Coachella Valley 335 Comment
  RSA76960  Stillingia spinulosa F. W. Peirson 1921-4-12 2044 Riverside Near Indian Wells. Comment
  RSA77059  Loeseliastrum schottii F. W. Peirson 1914-04 953 Riverside Whitewater at head of Coachella Valley. Comment
  RSA77341  Ceanothus tomentosus var. olivaceus F. W. Peirson 1922-4-30 2941 Riverside St. John's Grade, Baustista Creek, south of Hemet. 762 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
  RSA77820  Pectocarya platycarpa F. W. Peirson 1928-4-24 7908 Riverside Cottonwood Spring, west end of Eagle Mtns. Comment
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Oct 9 2010
  RSA77888  Tiquilia palmeri F. W. Peirson 1930-3-29 8688 Riverside Colorado Desert. Painted Canyon, near Mecca. Comment
  RSA77890  Tiquilia plicata F. W. Peirson 1914-04 992 a Riverside Whitewater east of Beaumont. Comment
  RSA79575  Cryptantha holoptera F. W. Peirson 1927-4-12 7162 Riverside In Painted Canyon near Mecca. Comment
  RSA79588  Cryptantha angustifolia F. W. Peirson 1926-2-22 6508 Riverside Thousand-Palms Canyon; Coachella Valley Comment
  RSA80305  Lycium fremontii F. W. Peirson 1927-4-12 7157 Riverside East branch of Painted Canyon, near Mecca. Comment
  RSA80383  Solanum umbelliferum F. W. Peirson 1922-4-29 4487 Riverside Leach Canyon. (base of Santa Ana Mts., near Elsinore) 534 Comment
  RSA80646  Epilobium pygmaeum F. W. Peirson 1922-5-19 4112 Riverside Menifee Valley, near Murrieta. 427 Comment
  RSA80734  Nicotiana clevelandii F. W. Peirson 1926-2-22 6511 Riverside Thousand Palm Canyon, northwest end of Coachella Valley. 122 Comment
  RSA81010  Fouquieria splendens F. W. Peirson 1921-3-23 2391 Riverside Deep canyon wash, south of Coachella Valley Comment
  RSA82107  Mimulus aurantiacus var. puniceus F. W. Peirson 1925-5-20 6014 Riverside 1 mile northwest of Dripping Spring, east of Temecula. 457 Comment
  RSA82119  Orobanche cooperi subsp. cooperi F. W. Peirson 1930-3-29 8692 Riverside At foot of Painted Canyon, lower Coachella Valley. Comment
  RSA84912  Crassula connata F. W. Peirson 1920-2-16 1935 Riverside Palm Canyon stream below the canyon, Palm Springs. region Comment
  RSA84991  Adiantum capillus-veneris F. W. Peirson 1919-4-13 1521 Riverside First canyon east of Palm Canyon, Palm Springs region. Comment
  RSA85070  Crossosoma bigelovii F. W. Peirson 1921-3-21 2808 Riverside Gordon Trail from Andreas Canyon, east base of the San Jacinto Mtns. 1067 Comment
  RSA85183  Ephedra viridis F. W. Peirson 1933-4-13 10641 Riverside Road from Deep Canyon south of Indio to Idyllwild 1220 Comment
  RSA85537  Cheilanthes covillei F. W. Peirson 1922-4-10 s.n. Riverside Murray Canyon, Palm Springs Region. 457 Comment
  RSA85863  Notholaena californica subsp. californica F. W. Peirson 1922-5-21 3053 Riverside about 4 miles north of San Jacinto 457 Comment
  RSA85864  Cheilanthes newberryi F. W. Peirson 1922-4-30 2929 Riverside foot of St Johns Grade, south of Hemet Comment
  RSA85943  Selaginella eremophila Frank W. Peirson 1920-12-28 s.n. Riverside Murray Canyon, near Palm Springs 304 Comment
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May 4 2007
  RSA86861  Prunus fasciculata F. W. Peirson 1928-4-24 7915 Riverside Plateau land west of Cottonwood Springs, northeast of mecca. Comment
  RSA86946  Lupinus arizonicus F. W. Peirson 1920-3-16 703 Riverside Sandy places opposite mouth of Andreas Canyon, Southwest of Palm Springs. Comment
  RSA86993  Prosopis glandulosa var. torreyana F. W. Peirson 1919-4-12 4429 Riverside Palm Canyon, near Palm springs. Comment
  RSA86994  Cercidium floridum F. W. Peirson 1919-4-15 575 Riverside Large tree near road to Palm Canyon from Palm Springs. Comment
  RSA87019  Acacia greggii var. arizonica F. W. Peirson 1921-4-11 4066 Riverside Murray Canyon. Palm Springs region. Comment
  RSA87025  Lupinus microcarpus var. densiflorus F. W. Peirson 1914-04 705 Riverside Whitewater at head of Coachella Valley. Comment
  RSA87095  Lupinus pallidus F. W. Peirson 1922-4-9 s.n. Riverside Palm Canyon region, head of Coachella Valley Comment
  RSA87459  Lupinus concinnus subsp. optatus F. W. Peirson 1922-5-19 7721 Riverside Road to Keenes Camp, San Jacinto Mts. Comment
  SD87621  Astragalus nuttallianus var. imperfectus Frank W. Peirson 1922-4-9 584 Riverside Murray Canyon, near Palm Springs. Comment
  SD87727  Dicoria canescens F. W. Peirson 1920-12-29 Riverside 1.5 miles east of Whitewater Comment
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Aug 21 2007
  SD87749  Eleocharis geniculata F. W. Peirson 1924-12-30 5408 Riverside 1000 Palms Canon Comment
  SD87786  Atriplex hymenelytra F. W. Peirson 1924-12-30 5415 Riverside 1000 Palms Canon Comment
  UC501502  Chimaphila umbellata Frank W. Peirson 1924-7-27 5004 Riverside 1 mi. w. Deer Spring; San Jacinto Mts. 2438 Comment
  UC570588  Sisymbrium irio Frank W. Peirson 1935-4-17 11470 Riverside Blythe, along main street of the town and exactly opposite the High School Blythe Comment
  UCD65761  Dasyochloa pulchella F. W. Peirson 1920-2-16 1546 Riverside arm of Colorado Desert south of Palm Springs, Garden of Eden. Comment
  UCR139384  Lycium andersonii F. W. Peirson 1922-4-29 1084 Riverside Perris-Aguanga Region, Aguanga 610 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
  UCR80284  Alopecurus saccatus F. W. Peirson, P. A. Munz 1922-5-19 s.n. Riverside Menifee Valley 457 Comment
  POM9934  Notholaena californica subsp. californica F. W. Peirson 1920-2-15 s.n. Riverside Palm Springs, Tahquitz Camp. Comment
  RSA0018792  Erythranthe guttata F. W. Peirson 1917-4-1 1125 Riverside Andreas Canyon near Palm Springs. Comment
  RSA0022087  Ribes montigenum F. W. Peirson 685 Riverside Summit of Mt. San Jacinto. 3262 Comment
  RSA0066528  Orobanche cooperi subsp. cooperi Frank W. Peirson 1924-12-30 5422 Riverside Thousand-Palms Canyon, Coachella Valley. 121 Comment
  RSA0066539  Orobanche cooperi subsp. cooperi Frank W. Peirson 1917-4-1 1176 Riverside Near Palm Springs, Coachella Valley. Comment
  RSA0091445  Amsinckia tessellata F. W. Peirson 1919-4-13 995 Riverside Alkali Canyon, first canyon east of Palm Canyon near Palm Springs. 381 Comment
  RSA0121592  Eriastrum sapphirinum subsp. dasyanthum F. W. Peirson 1920-6-22 4708 Riverside Temescal Canyon. 305 Comment
  RSA90156  Astragalus didymocarpus F. W. Peirson 1914-1 576 Riverside Whitewater, east of Cabezon Comment
  RSA90345  Lotus wrangelianus F. W. Peirson 1930-5-10 8770 Riverside Roadside, on Hemet Plateau near March Field, between Riverside and Perris. 457 Comment
  RSA90412  Lotus oblongifolius F. W. Peirson 1924-7-28 5018 Riverside Pine Flats Camp 1799 Comment
  RSA90426  Lotus salsuginosus var. salsuginosus F. W. Peirson 1928-3-10 7705 Riverside Hidden Spring, northern Colorado Desert. Comment
  RSA90638  Astragalus palmeri F. W. Peirson 1921-3-23 4752 Riverside Deep Canyon, SE of Palm Springs. 335 Comment
  RSA90692  Gutierrezia sarothrae F. W. Peirson 1922-12-26 1217 Riverside Box Springs Grade near Riverside. Comment
  RSA90750  Astragalus pachypus var. jaegeri F. W. Peirson 1920-6-23 2205 Riverside Aguanga 609 Comment
  RSA91826  Cenchrus echinatus F. W. Peirson 1937-11-27 12246 Riverside La Quinta, Coachella Valley. 0 Comment
  RSA91911  Phleum alpinum F. W. Peirson 1924-7-27 4996 Riverside Deer Springs, San Jacinto Mountains 2668 Comment
  RSA92213  Palafoxia arida var. arida F. W. Peirson 1918-03 4310 Riverside Field near Indio. Comment
  RSA92402  Bebbia juncea F. W. Peirson 1924-6-21 4756 Riverside Temescal Canyon, near Elsinore 305 Comment
  RSA92622  Salix lasiolepis F. W. Peirson 1922-6-29 5437 Riverside Tahquitz Valley. 2134 Comment
  RSA93169  Baccharis salicifolia F. W. Peirson 1920-2-15 2316 Riverside Palm Springs, Tahquitz Camp. Comment
  RSA93246  Chrysothamnus teretifolius F. W. Peirson 1937-10-20 12363 Riverside Santa Rosa Mts 1829 Comment
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Dec 17 2011
  RSA93680  Filago californica F. W. Peirson 1921-3-22 5277 Riverside Murray Canyon, south side in canyon 457 Comment
  RSA93718  Brickellia arguta F. W. Peirson 1928-4-24 7900 Riverside Below Cottonwood Spring, northern edge of Colorado Desert. Comment
  RSA94086  Psathyrotes ramosissima F. W. Peirson 1918-03 1426 Riverside Between Palm Springs and Indio. Comment
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Feb 22 2009
  RSA94110  Peucephyllum schottii F. W. Peirson 1930-3-29 8690 Riverside Colorado Desert. Painted Canyon, near Mecca. Comment
  RSA94162B  Monoptilon bellioides F. W. Peirson 1928-4-24 7899 Riverside Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert. Comment
  RSA94416  Eriophyllum ambiguum var. paleaceum F. W. Peirson 1933-4-13 10638 Riverside Road from Deep Canyon to Idyllwild. 610 Comment
  RSA94418  Eriophyllum ambiguum var. paleaceum F. W. Peirson 1920-2-16 1387 Riverside Murray Canyon, Palm Springs region. 274 Comment
  RSA94628  Psilostrophe cooperi F. W. Peirson 1928-4-25 7916 Riverside On plateau west and northwest of Cottonwood Spring, northern Colorado Desert Comment
  RSA94968  Malacothrix californica F. W. Peirson 1914-04 1478 Riverside Beaumont Comment
  RSA95320  Sphaeralcea ambigua subsp. ambigua F. W. Peirson 1917-4-1 2065 Riverside Andreas Canyon near Palm Springs. Comment
  RSA95365  Sphaeralcea ambigua subsp. ambigua F. W. Peirson 1919-4-13 777 Riverside Murray Canyon, Palm Springs Region. 457 Comment
  RSA97358  Bowlesia incana F. W. Peirson 1922-4-30 2954 Riverside Lancaster Valley about 1.5 miles from the Temecula River on road to Hemet 518 Comment
  RSA97436  Lomatium vaginatum F. W. Peirson 1922-4-29 2932 Riverside South of Lake Elsinore. 381 Comment
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Dec 8 2013
  CAS-BOT-BC100148  Bebbia juncea var. aspera Frank W. Peirson 1930-4-14 8703 San Bernardino Near Cave Spring, [Mohave] Mojave Desert 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-BC101341  Corethrogyne filaginifolia Frank W. Peirson 1920-9-13 2751 San Bernardino San Antonio Canyon, San Gabriel Mts. 1524 Comment
  CAS-BOT-BC111024  Scirpus microcarpus Frank Warrington Peirson 1922-6-20 3097 San Bernardino in water along road, 4 miles east of San Bernardino, southern California Comment
  CAS-BOT-BC123790  Gilia latiflora subsp. elongata Frank Warrington Peirson 1922-5-13 2985 San Bernardino 28 miles N of Barstow, vicinity Seabergs Well Comment
  CAS-BOT-BC131735  Ericameria cooperi var. cooperi F. W. Peirson 1921-5-30 5427 San Bernardino Mojave River, Mojave Desert 883 Comment
  CAS-BOT-BC139406  Agrostis hyemalis Frank W. Peirson 1923-8-23 3971 San Bernardino San Bernardino Mountains. High Creek. Comment
  CAS-BOT-BC141853  Potentilla anserina F. W. Peirson 1924-5-15 4593 San Bernardino Baldwin Lake, San Bernardino Mts. 2042 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-BC145268  Potentilla wheeleri Frank W. Peirson 1924-5-16 4606 San Bernardino East end Bear Lake 2042 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-BC17736  Carex alma Frank W. Peirson 1932-5-28 s.n. San Bernardino San Bernardino Mountains. Southwest shores of Baldwin Lake. 2042 Comment
  CAS-BOT-BC18112  Carex athrostachya Frank W. Peirson 1929-7-11 8467 San Bernardino San Bernardino Mountains. Fawnskin, Bear Valley. 2042 Comment
  CAS-BOT-BC195688  Distichlis spicata Frank W. Peirson 1924-5-14 4541 San Bernardino Box Spring, Cushenberry region, Mojave Desert 1082 Comment
  CAS-BOT-BC196824  Lupinus breweri var. grandiflorus F. W. Peirson 1922-6-21 3129 San Bernardino Santa Ana River, San Bernardino Mts. 2164 Comment
  CAS-BOT-BC19746  Carex abrupta Frank W. Peirson 1923-8-23 3973 San Bernardino San Bernardino Mountains. High Creek. 2773 Comment
  CAS-BOT-BC215617  Monardella linoides subsp. erecta Frank W. Peirson 1924-9-2 5186 San Bernardino Fish Camp, City Creek Road, San Bernardino Mts. 2057 Comment
  CAS-BOT-BC217403  Gentiana fremontii Frank W. Peirson 1922-6-22 3136 San Bernardino Santa Ana River, San Bernardino Mountains 2377 Comment
  CAS-BOT-BC241262  Castilleja cinerea Frank W. Peirson 1933-6-24 s.n. San Bernardino Southwest shore of Baldwin Lake, San Bernardino Mts. 2057 Comment
  CAS-BOT-BC243018  Poa secunda subsp. secunda Frank W. Peirson 1924-5-15 4539 San Bernardino N end of Baldwin Lake, San Bernardino Mountains 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-BC262151  Eriogonum umbellatum var. subaridum Frank W. Peirson 1922-7-7 3177 San Bernardino Sheep Creek, desert slope of San Gabriel Mts. 1615 Comment
  CAS-BOT-BC274398  Leucopoa kingii F. W. Peirson 1930-7-8 9038 San Bernardino Fish Hatchery Creek, north slope Sugarloaf, San Bernadino Mts. 2514 Comment
  CAS-BOT-BC298501  Eriophyllum ambiguum var. paleaceum Frank W. Peirson 1930-4-14 8704 San Bernardino In sandy soil above spring but more abundant in open desert of Cave Spring, Mojave Desert Comment
  CAS-BOT-BC31162  Carex lemmonii Frank W. Peirson 1923-8-23 3970 San Bernardino High Creek, San Bernardino Mts. Comment
  CAS-BOT-BC321558  Layia glandulosa Frank W. Peirson 1924-5-15 4591 San Bernardino Shores of Baldwin Lake, San Bernardino Mountains 2042 Comment
  CAS-BOT-BC39684  Cusickiella douglasii Frank W. Peirson 1924-5-15 4589 San Bernardino San Bernardino Mountains. Baldwin Lake. 2042 Comment
  CAS-BOT-BC46160  Agoseris heterophylla Frank W. Peirson 1920-8-24 2255 San Bernardino San Bernardino Mts., Upper Santa Ana River, just above enclosure, Big Meadows 2133 Comment
  CAS-BOT-BC67804  Marsilea vestita Frank W. Peirson 1933-6-25 10674 San Bernardino San Bernardino Mts. - two miles southeast of Baldwin Lake 2133 Comment
  CAS-BOT-BC90796  Artemisia ludoviciana subsp. ludoviciana F. W. Peirson 1923-9-1 3197 San Bernardino Ranger Station, Swartout Valley, north slope of San Gabriel Mts. 1798 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
  JEPS15887  Corethrogyne filaginifolia Frank W. Peirson 1926-9-5 7073 San Bernardino on shore of Lake Arrowhead; Arrowhead Lake 1524 Comment
  JEPS38526  Salix exigua F. W. Peirson 1918-7-9 14 San Bernardino San Antonio Canyon 1341 Comment
  JEPS41455  Erigeron breweri var. breweri F. W. Peirson 1922-8-22 3291 San Bernardino near stream; San Bernardino Mountains, Santa Ana River,South Fork; data in packet includes This looks to me like 3204... 2560 Comment
  JEPS44056  Oenothera californica Frank W. Peirson 1919-4-16 387 San Bernardino Cajon Pass San Gabriel Mountains (s slope) 685 Comment
  JEPS48969  Sisyrinchium bellum Frank W. Peirson 1918-7-8 11 San Bernardino San Antonio Canyon 1828 Comment
  JEPS5072  Asclepias vestita Frank W. Peirson 1921-5-29 887 San Bernardino Cajon Pass Summit; San Gabriel Mountains 1219 Comment
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Nov 30 2015
  JEPS5094  Asclepias albicans Frank W. Peirson 1935-4-18 11503 San Bernardino n part of Range near the road going down into Copper Basin; Whipple Mts. 457 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
  JEPS56247  Eriogonum thurberi Frank W. Peirson 1921-7-4 2487 San Bernardino Cajon Pass San Gabriel Mountains Comment
  JEPS56873  Eriogonum heermannii var. argense F. W. Peirson 1922-5-13 2963 San Bernardino Pilot Knob Mohave Desert 1524 Comment
  JEPS58289  Linanthus breviculus Frank W. Peirson 1921-5-29 2420 San Bernardino Cajon Pass, n slope San Gabriel Mountains 1097 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
  JEPS64321  Corallorhiza maculata Frank W. Peirson 1922-7-18 3212 San Bernardino Kelly's Cabin San Gabriel Mountains, Ontario Ridge 2468 Comment
  JEPS66921  Juncus bufonius Frank W. Peirson 1920-5-20 1643 San Bernardino Lytle Creek San Gabriel Mountains Comment
  JEPS69857  Leptodactylon pungens Frank W. Peirson 1918-7-7 152 San Bernardino Ontario Ridge; San Gabriel Mts., Ontario Ridge 2590 Comment
  JEPS9474  Galium angustifolium subsp. gabrielense F. W. Peirson 1918-5-27 216 San Bernardino San Antonio Canyon 1371 Comment
  LA38974  Mimulus mohavensis Frank W. Peirson; 1922-5-14 2982 San Bernardino Half way Barstow to Victorville, River Rd Comment
  OBI50445  Thelypodium stenopetalum Frank W. Peirson 1933-1 San Bernardino Comment
  PASA1080  Lotus davidsonii Frank W. Peirson 1924-7-24 San Bernardino Bluff Lake, San Bernardino Mts. 2285 Comment
  PASA119  Mimulus bigelovii Frank W. Peirson 1922-5-12 San Bernardino ""Copper City"", near Pilot Knob, Mohave Desert Comment
  PASA1284  Stellaria longipes Frank W. Peirson 1922-6-22 San Bernardino South Fork Santa Ana River, San Bernardino Mts. 2377 Comment
  PASA1302  Silene menziesii Frank W. Peirson 1930-7-4 San Bernardino Greene Creek, north slope sugarloaf, San Bernardino Mts. 2346 Comment
  PASA1543  Viola purpurea var. pinetorum Frank W. Peirson 1920-5-29 San Bernardino Ontario Ridge, San Antonio Region 2590 Comment
  PASA1700  Solidago californica Frank W. Peirson 1924-9-2 San Bernardino Fish Camp, City Creek Road, San Bernardino Mts. 2057 Comment
  PASA1779  Malvastrum orbiculatum Frank W. Peirson 1924-9-1 San Bernardino Johnson's Grade, San Bernardino Mts. 1981 Comment
  PASA2279  Antennaria dioica Frank W. Peirson 1930-7-4 San Bernardino Greene Creek, north slope Sugarloaf, San Bernardino Mts. 2590 Comment
  PASA2303  Hemizonia wheeleri Frank W. Peirson 1930-7-7 San Bernardino Arrastre Flat, San Bernardino Mts. 2285 Comment
  PASA2376  Acer glabrum Frank W. Peirson 1930-7-4 San Bernardino Greene Creek, north slope Sugarloaf, San Bernardino Mts. 2438 Comment
  PASA2639  Ranunculus eschscholtzii var. oxynotus Frank W. Peirson 1920-8-22 1877 San Bernardino Foxesee (or Forsee) Creek, San Bernadino Mtns. 2666 Comment
  PASA2715  Astragalus bicristatus Frank W. Peirson 1930-7-5 9007 San Bernardino Road from Bear Lake to Holcomb Valley, San Bernadino Mtns. 2133 Comment
  PASA2799  Canbya candida F. W. Peirson 1921-5-29 San Bernardino North Slope Cajon 1097 Comment
  PASA651  Distichlis spicata Frank W. Peirson 1930-7-1 San Bernardino Southwest shore of Baldwin Lake, San Bernardino Mts. 2042 Comment
  PASA678  Geranium richardsonii Frank W. Peirson 1930-7-4 San Bernardino Green Creek, north slope Sugarloaf, San Bernardino Mts. Comment
  PASA808  Lupinus breweri Frank W. Peirson 1930-7-5 San Bernardino Near Peter Pan Woodland Club, San Bernardino Mts. 2072 Comment
  PASA843  Iva axillaris Frank W. Peirson 1930-7-2 San Bernardino North shore of Baldwin Lake, San Bernardino Mts. 2042 Comment
  PASA870  Penstemon fruticiformis Frank W. Peirson 1930-5-31 San Bernardino Summit of grade above Warrens Well Comment
  POM13529  Astragalus leucolobus F. W. Peirson 1922-6-21 3143 San Bernardino Santa Ana River 1982 Comment
  POM13540  Veronica serpyllifolia var. humifusa F. W. Peirson 1922-6-22 s.n. San Bernardino South Fork of Santa Ana. San Bernardino Mtns. 2348 Comment
  POM193462  Eriogonum evanidum F. W. Peirson 1929-10-5 s.n. San Bernardino Along stream south of Peter Pan Woodland Club, Bear Valley 2134 Comment
  POM212933  Phacelia rotundifolia F. W. Peirson 1935-4-18 11485 San Bernardino Copper basin creek, Whipple Mtns., eastern San Bernardino county Comment
  POM254663  Atriplex rosea F. W. Peirson 1923-8-30 4009 San Bernardino Northeast part of San Gabriel Mts., Lone Pine Canyon, Clyde Ranch. 1479 Comment
  POM349507  Trifolium monanthum subsp. grantianum F. W. Peirson 1924-7-5 4070 San Bernardino Bluff Lake. San Bernardino Mts. 2287 Comment
  POM351951  Chrysothamnus nauseosus subsp. bernardinus F. W. Peirson 1924-9-2 3176 San Bernardino Fish Camp. 2058 Comment
  POM360478  Hieracium horridum F. W. Peirson 1924-7-5 s.n. San Bernardino Bluff Lake, San Bernardino Mts 2286 Comment
  POM43350  Horkelia wilderae F. W. Peirson 1922-6-25 4277 San Bernardino Barton Flats. Comment
  RSA0129772  Arabis parishii F. W. Peirson 1922-6-23 3101 San Bernardino Along ridge eastward from summit of Sugarloaf Peak, San Bernardino Mountains. 2957 Comment
  RSA366029  Scirpus microcarpus F. W. Peirson 1922-6-20 S- 097 San Bernardino 4 miles SE of San Bernardino. Comment
  RSA368902  Luzula comosa F. W. Peirson 1922-6-24 s.n. San Bernardino South Fork of the Santa Ana River 1921 Comment
  RSA399957  Ranunculus alismifolius var. alismellus F. W. Peirson 1924-7-5 4900 San Bernardino North shore of Baldwin Lake 2037 Comment
  RSA414752  Oxytropis oreophila F. W. Peirson 1922-8-28 s.n. San Bernardino Summit of San Gorgonio Peak Comment
  RSA420563  Eriogonum umbellatum var. munzii F. W. Peirson 1922-7-7 3177 San Bernardino San Gabriel Mountains: Sheep Creek 1921 Comment
  RSA427464  Solanum umbelliferum F. W. Peirson 1929-10-11 8598 San Bernardino City Creek Rd., 2 mi west of Bear Lake Dam. 2134 Comment
  RSA467873  Pyrola californica F. W. Peirson 1924-7-13 4991 San Bernardino Fish Creek, San Bernardino Mts. 2317 Comment
  RSA473032  Packera ionophylla F. W. Peirson 1924-7-13 s.n. San Bernardino Big Meadows, Upper Santa Ana River, San Bernardino Mountains 2133 Comment
  RSA614278  Ericameria cooperi F. W. Peirson 1931-5-30 5427 San Bernardino Mojave River, E of Hesperia. Old river terrace 884 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
  RSA65020  Silene menziesii subsp. dorrii F. W. Peirson 1924-7-13 4939 San Bernardino Fish Creek. 2134 Comment
  RSA65065  Silene krantzii F. W. Peirson 1923-4-24 615 San Bernardino Summit od San Gorgonio Peak. 3476 Comment
  RSA65088  Eriogonum hirtiflorum F. W. Peirson 1916-7-4 1730 San Bernardino Road between Lake Arrowhead and Bear Valley. Comment
  RSA65224  Eriogonum maculatum F. W. Peirson 1921-5-29 1725 San Bernardino Almost due east of Hesperia and on Mojave River. 884 Comment
  RSA65464  Rumex maritimus F. W. Peirson 1929-7-11 8459 San Bernardino Fawskin, Bear Valley, San Bernardino Mountains. 2043 Comment
  RSA65473  Rumex salicifolius var. salicifolius F. W. Peirson 1922-7-7 5351 San Bernardino Rangers Cabin, Swartout Valley, north slope of San Gabriel Mountains. 1799 Comment
  RSA65549  Arenaria ursina F. W. Peirson 1924-5-15 4578 San Bernardino At foot of hills, Baldwin Lake 2042 Comment
  RSA65722  Claytonia perfoliata subsp. intermontana F. W. Peirson 1922-5-13 3008 San Bernardino North slope of Pilot Knob, northwestern Mojave Desert. 1296 Comment
  RSA65738  Claytonia perfoliata subsp. intermontana F. W. Peirson 1916-7-6 601 San Bernardino Big Bear Lake, San Bernardino Mts. 2042 Comment
  RSA65862  Polygonum sawatchense subsp. sawatchense F. W. Peirson 1922-8-22 4216 San Bernardino Meadows of South Fork of Santa Ana River, San Bernardino Mountains. 2561 Comment
  RSA65914  Polygonum bistortoides F. W. Peirson 1924-7-5 4892 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA65933  Polygonum bistortoides F. W. Peirson 1922-8-25 3275 San Bernardino South Fork of Santa Ana River, 2439 Comment
  RSA66119  Cusickiella douglasii F. W. Peirson 1924-5-15 4589 San Bernardino Baldwin Lake. 2043 Comment
  RSA66195  Arabis pulchra var. gracilis F. W. Peirson 1930-4-16 8733 San Bernardino Cima Road, 10 miles south of the Las Vegasto Barstow Road Comment
  RSA66250  Arabis hirsuta var. glabrata F. W. Peirson 1922-8-27 6350 San Bernardino Santa Ana River, San Bernardino Mts 1936 Comment
  RSA66553  Draba corrugata F. W. Peirson 1916-7-6 648 San Bernardino Bear Lake region [Big Bear Lake], San Bernardino Mountains. Comment
  RSA66554  Draba corrugata F. W. Peirson 1951-1 57 San Bernardino San Bernardino Mountains. Comment
  RSA66599  Rorippa curvisiliqua F. W. Peirson 1924-7-5 2590 San Bernardino Bluff Lake, San Bernardino Mountains 2317 Comment
  RSA66714  Streptanthus bernardinus F. W. Peirson 1926-9-5 7075 San Bernardino Lake Arrowhead 1524 Comment
  RSA66802  Thelypodium stenopetalum F. W. Peirson 1926-5-30 6741 San Bernardino North side of Baldwin Lake. San Bernardino Mountains. 2043 Comment
  RSA67358  Lepidium flavum F. W. Peirson 1917-5-13 676 San Bernardino Mojave Desert. 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
  RSA68990  Plantago lanceolata F. W. Peirson 1920-5-18 2150 San Bernardino Lytle Creek, east end of San Gabriel Mts. 1067 Comment
  RSA69265  Pterospora andromedea F. W. Peirson 1920-8-25 2272 San Bernardino San Bernardino Mts. Dollar Lake region. 2668 Comment
  RSA69557  Mentzelia jonesii F. W. Peirson 1928-3-31 7756 San Bernardino N of Victorville. Comment
  RSA69562  Mentzelia jonesii F. W. Peirson 1917-5-13 754 San Bernardino West of Victorville. Comment
  RSA69635  Juncus balticus subsp. ater F. W. Peirson 1920-8-25 2268 San Bernardino Dollar Lake, San Bernardino Mountains. 2744 Comment
  RSA69684  Mentzelia desertorum F. W. Peirson 1928-4-1 7764 San Bernardino 33 miles north of Baker. Comment
  RSA69707  Mentzelia obscura F. W. Peirson 1932-3-25 9836 San Bernardino North of Yermo. 610 Comment
  RSA69875  Amsonia tomentosa var. tomentosa F. W. Peirson 1924-7-6 4928 San Bernardino Mojave River, San Bernardino Mtns. Foot of Toll Road. Comment
  RSA69952  Krascheninnikovia lanata F. W. Peirson 1917-5-13 1831 San Bernardino West of Victorville. Comment
  RSA70013  Amaranthus californicus F. W. Peirson 1926-9-5 7074 San Bernardino Lake Arrowhead 1524 Comment
  RSA70068  Platanthera sparsiflora Frank W. Peirson 1920-9-14 4284 San Bernardino Coldwater cienega, tributary of Lytle Creek, San Gabriel Mountains. 2134 Comment
  RSA70355  Menodora spinescens F. W. Peirson 1930-4-16 8732 San Bernardino 8 miles south of Cima, eastern San Bernardino Comment
  RSA70607  Iris hartwegii subsp. australis Frank W. Peirson 1916-7-6 1692 San Bernardino Bear Lake region [Big Bear Lake], San Bernardino Mountains. Comment
  RSA70852  Arctostaphylos glandulosa subsp. glaucomollis F. W. Peirson 1924-9-2 5196 San Bernardino City Creek Road, San Bernardino Mts. 1524 Comment
  RSA72085  Microsteris gracilis subsp. gracilis F. W. Peirson 1922-6-22 3099 San Bernardino South Fork of Santa Ana River. 2622 Comment
  RSA72230  Oenothera primiveris subsp. bufonis F. W. Peirson 1922-5-12 2997 San Bernardino 17 miles south of Barstow on Victorville road. Comment
  RSA72314  Gilia diegensis F. W. Peirson 1919-4-16 4133 San Bernardino South slope of Cajon Pass. 686 Comment
  RSA73288  Linanthus pungens subsp. hallii F. W. Peirson 1922-6-23 3348 San Bernardino Holcomb Creek. 2591 Comment
  RSA74495  Phacelia neglecta F. W. Peirson 1922-5-14 3010 San Bernardino Half between Barstow and Victorville. 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
  RSA75372  Camissonia boothii subsp. boothii F. W. Peirson 1916-7-9 792 San Bernardino Mojave Desert, near Victorville. Comment
  RSA75881  Nemophila menziesii var. integrifolia F. W. Peirson 1924-5-16 4602 San Bernardino City Creek Road, Fredalba, San Bernardino Mts. 1524 Comment
  RSA75945  Phacelia austromontana F. W. Peirson 1920-5-19 4717 San Bernardino northward extension of Devil s Backbone 1982 Comment
  RSA77572  Lappula occidentalis var. occidentalis F. W. Peirson 1916-7-8 1004 San Bernardino Cushenberry Grade on north base of San Bernardino Mountains Comment
  RSA77717  Ceanothus greggii var. vestitus F. W. Peirson 1916-7-8 5379 San Bernardino Box 'S' Springs near north base of San Bernardino Mtns. 1082 Comment
  RSA77760  Viola douglasii F. W. Peirson 1906-8-15 748 San Bernardino Lookout Mt., Bluff Lake, San Bernardino Mountains. Comment
  RSA77795  Lappula occidentalis var. occidentalis F. W. Peirson 1922-6-24 4058 San Bernardino Santa Ana River, alt 6250ft, San Bernardino Mts. Comment
  RSA77847  Callitriche heterophylla F. W. Peirson 1924-9-1 5172 San Bernardino Arrastre Flat, San Bernardino Mts. Comment
  RSA77875  Heliotropium curassavicum var. oculatum F. W. Peirson 1930-7-1 8962 San Bernardino Baldwin Lake. 2043 Comment
  RSA77881  Tiquilia nuttallii F. W. Peirson 1921-5-29 2734 San Bernardino Mojave River, E of Hesperia, Comment
  RSA78545  Carex praegracilis F. W. Peirson 1935-11-10 13601 San Bernardino Southwest of Baldwin Lake, San Bernardino Mountains. 2058 Comment
  RSA79628  Mimulus parishii F. W. Peirson 1916-7-9 1127 San Bernardino Mojave Desert, near Victorville. Comment
  RSA79632  Mimulus purpureus F. W. Peirson 1932-5-29 9968 San Bernardino Along road to Fish Hatchery, south of Baldwin Lake 2104 Comment
  RSA80054  Veronica peregrina subsp. xalapensis F. W. Peirson 1919-6-5 499 San Bernardino San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA80125  Mimulus bigelovii var. bigelovii F. W. Peirson 1922-5-12 3013 San Bernardino Copper City, Mojave Desert. Comment
  RSA80228  Penstemon caesius F. W. Peirson 1930-7-4 8994 San Bernardino Greene Creek, north slope of Sugerloaf. 2515 Comment
  RSA80455  Mimulus moschatus var. longiflorus F. W. Peirson 1922-6-24 3123 San Bernardino Santa Ana River at mouth of South Fork. 1921 Comment
  RSA80703  Hypericum formosum var. scouleri F. W. Peirson 1924-9-2 5183 San Bernardino Fish Camp. Comment
  RSA80761  Cryptantha nevadensis F. W. Peirson 1926-4-27 6680 San Bernardino 14 miles E of victorville 915 Comment
  RSA80776  Nicotiana attenuata F. W. Peirson 1926-9-6 7085 San Bernardino along stream bed, Deep Creek Rd., 1372 Comment
  RSA81443  Castilleja montigena F. W. Peirson 1930-7-5 9008 San Bernardino Road from Bear Lake to Holcomb Valley 2134 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
Read comments
Aug 16 2011
  RSA82035  Cordylanthus nevinii F. W. Peirson 1924-9-2 5179 San Bernardino Fish Camp, San Bernardino Mountains. 2058 Comment
  RSA82054  Cordylanthus nevinii F. W. Peirson 1926-9-5 7076 San Bernardino Lake Arrowhead. 1524 Comment
  RSA82202  Trichostema austromontanum subsp. austromontanum F. W. Peirson 1906-8-15 1042 San Bernardino Bluff Lake, San Bernardino Mountains. 2256 Comment
  RSA82212  Verbena gooddingii F. W. Peirson 1930-4-16 8737 San Bernardino 8 miles south of Cima, eastern San Bernardino 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
  RSA82250  Castilleja miniata subsp. miniata F. W. Peirson 1923-8-30 4021 San Bernardino Clyde Ranch, Lone Pine Canyon. Eastern San Gabriel Mountains, west San Bernardino County 1494 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
  RSA83317  Monardella macrantha subsp. hallii F. W. Peirson 1931-7-6 9389 San Bernardino City Creek Road. 1524 Comment
  RSA84208  Sedum niveum F. W. Peirson 1920-8-26 2298 San Bernardino Creek east of Foresee Creek, north base of Mount San Bernardino. 1677 Comment
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Jan 2 2012
  RSA84211  Sedum niveum F. W. Peirson 1924-7-14 4951 San Bernardino Lost Creek, San Bernardino Mountains. Comment
  RSA84263  Azolla filiculoides Frank W. Peirson 1924-8-31 5109 San Bernardino South of Victorville 792 Comment
  RSA84998  Athyrium filix-femina F. W. Peirson 1922-8-25 3285 San Bernardino South fork of Santa Ana River, San Bernardino Mountains 2560 Comment
  RSA85025  Polystichum scopulinum F. W. Peirson 1924-7-5 4888 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA85184  Ephedra viridis F. W. Peirson 1922-5-13 1526 San Bernardino Summit of Pilot Knob, northwestern San Bernardino County 1677 Comment
  RSA85197  Typha latifolia F. W. Peirson 1923-8-30 4019 San Bernardino Clyde Ranch, Lone Pine Canyon. Eastern San Gabriel Mountains, west San Bernardino County 1494 Comment
  RSA85208  Horkelia wilderae F. W. Peirson 1922-6-22 3114 San Bernardino South Fork of Santa Ana River; San Bernardino Mountains. 2378 Comment
  RSA85238  Horkelia rydbergii F. W. Peirson 1929-7-11 8465 San Bernardino Fawnskin 2043 Comment
  RSA85794  Potentilla anserina F. W. Peirson 1924-5-15 4593 San Bernardino Baldwin Lake. 2043 Comment
  RSA86188  Cystopteris fragilis F. W. Peirson 1920-8-25 4299 San Bernardino South Fork of Santa Ana River 2438 Comment
  RSA86530  Pinus attenuata F. W. Peirson 4583 San Bernardino City Creek Road. 1067 Comment
  RSA86636  Geum macrophyllum F. W. Peirson 1920-8-25 2320 San Bernardino South Fork of Santa Ana River 2439 Comment
  RSA86663  Coleogyne ramosissima F. W. Peirson 1924-5-14 4561 San Bernardino Box S Springs in Cushenberry [Cushenbury] Springs Region, north base of San Bernardino Mountains. 1082 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
  RSA86712  Leucopoa kingii F. W. Peirson 1930-7-8 9038 San Bernardino Fish Hatchery creek [possibly Green Canyon Creek], north slope of Sugarloaf Peak, San Bernardino Mts. 2515 Comment
Read comments
Aug 15 2011
  RSA86726  Aristida purpurea var. nealleyi F. W. Peirson 1935-4-18 11499 San Bernardino Northern part of Whipple Mountains, road going down into Copper Basin 427 Comment
  RSA86972  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1923-3-23 7719 San Bernardino 1 mile east of Mentone. Comment
  RSA87017  Acacia greggii var. arizonica F. W. Peirson 1927-7-10 7355 San Bernardino Several miles west of Mexican Well, eastern borders of San Bernardino Co. 1220 Comment
  RSA87211  Lupinus elatus F. W. Peirson 1924-7-5 4911 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA87395  Lupinus confertus F. W. Peirson 1924-7-5 4914 San Bernardino North shore of Baldwin Lake 2037 Comment
  RSA87448  Agrostis scabra F. W. Peirson 1923-8-23 3971 San Bernardino Deep Creek, San Bernardino Mountains. 2774 Comment
  RSA88752  Carex aurea F. W. Peirson 1932-7-13 4932 San Bernardino Big Meadows, San Bernardino Mountains 2134 Comment
  RSA90234  Astragalus lentiginosus var. sierrae F. W. Peirson 1924-5-15 4558 San Bernardino North end of Baldwin Lake 2037 Comment
  RSA90721  Astragalus leucolobus F. W. Peirson 1924-5-15 4566 San Bernardino At foot of hills, Baldwin Lake 2042 Comment
  RSA91963  Elymus elymoides subsp. californicus F. W. Peirson 1922-7-21 s.n San Bernardino North slope of Mt San Antonio, San Gabriel Mountains 2957 Comment
  RSA92712  Salix lemmonii F. W. Peirson 1920-8-22 721 San Bernardino Ridge east of Foxesee Creek [Forsee Creek], San Bernardino Mts 2896 Comment
  RSA93179  Machaeranthera canescens F. W. Peirson 1920-8-22 2588 San Bernardino Ridge east of Foxesee Creek [Forsee Creek], San Bernardino Mts 2895 Comment
  RSA93621  Antennaria rosea F. W. Peirson 1922-6-22 4231 San Bernardino South Fork of Santa Ana River 2348 Comment
  RSA94381  Dyssodia cooperi F. W. Peirson 1930-5-31 8928 San Bernardino Summit of grade above Warrens Well. Little San Bern Mtns. Comment
  RSA94706  Packera ionophylla F. W. Peirson 1924-7-14 4961 San Bernardino north slope of the ridge above Lost Creek, San Bernardino Mts. 2743 Comment
  RSA95248  Taraxacum californicum F. W. Peirson 1926-5-31 6757 San Bernardino Bluff Lake 2287 Comment
  RSA95262  Sidalcea hickmanii subsp. parishii F. W. Peirson 1924-7-16 4971 San Bernardino Barton Flats Road. 1524 Comment
  RSA95272  Sidalcea pedata F. W. Peirson 1939-7-11 8463 San Bernardino Fawnskin, Bear Valley. 2043 Comment
  SD87572  Aliciella leptomeria F. W. Peirson 1924-5-14 4577 San Bernardino 21 miles east of Victorville. Comment
  SD87594  Boechera parishii F. W. Peirson 1922-6-23 3101 San Bernardino San Bernardino Mountains, Summit of Sugarloaf 2970 Comment
  SD87726  Collinsia parryi Frank W. Peirson 1920-5-28 San Bernardino San Antonio Canyon 1524 Comment
  SD87760  Linanthus killipii F. W. Peirson 1926-5-30 6748 San Bernardino Low hills, north side of Baldwin Lake 2042 Comment
  SD87787  Sidalcea hickmanii subsp. parishii F. W. Peirson 1920-8-26 2251 San Bernardino Road crossing Toxesee Creek. 1676 Comment
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Jan 2 2012
  UC483087  Salix scouleriana Frank W. Peirson 1932-5-30 9970 San Bernardino Green Valley San Bernardino Mts., Green Valley 2103 Comment
  UC501469  Monoptilon bellidiforme Frank W. Peirson 1926-4-27 6681 San Bernardino 18 mi e Victorville (vicinity of Box S Ranch) Comment
  UC501543  Calystegia occidentalis subsp. fulcrata Frank W. Peirson 1930-7-4 8988 San Bernardino n slope Sugarloaf (Green Creek, San Bernardino Mts.); San Bernardino Mts., n slope Sugarloaf, Green Creek 2377 Comment
  UC501550  Hesperochiron californicus Frank W. Peirson 1932-5-28 9964 San Bernardino flats along s.w. shore Baldwin Lake; San Bernardino Mts., Baldwin Lake 2042 Comment
  UC501580  Astragalus bicristatus Frank W. Peirson 1932-5-28 San Bernardino sw side Baldwin Lake San Bernardino Mts., Baldwin Lake 2057 Comment
  UC501596  Lesquerella tenella Frank W. Peirson 1932-3-23 9812 San Bernardino on the Blythe Road 35 mi s Needles; s of Needles Comment
  UC511770  Marsilea vestita subsp. vestita Frank W. Peirson 1933-6-25 10674 San Bernardino 2 mi se Baldwin Lake; San Bernardino Mts., Bear Valley 2133 Comment
  UC570590  Gilia scopulorum Frank W. Peirson 1935-4-18 11484 San Bernardino Copper Basin Creek Whipple Mountains, Copper Basin Creek Comment
  UC570602  Salvia mohavensis Frank W. Peirson 1935-4-18 11496 San Bernardino not far from road going down into Copper Basin (n part of Whipple Mountains Range); Whipple Mountains Comment
  UC672290  Symphyotrichum defoliatum Frank W. Peirson 1924-9-1 5165 San Bernardino east end of lake Baldwin Lake 2042 Comment
  UC912501  Dieteria canescens var. canescens Frank W. Peirson 1920-8-22 2588 San Bernardino ridge e Foxesee Creek; San Bernardino Mts. 2895 Comment
  UCR136639  Sidalcea hickmanii subsp. parishii F. W. Peirson 1924-7-16 4971 San Bernardino Transverse Range; San Bernardino Mtns., Barton Flats Road [probably in vicinity of Seven Oaks] 1616 Comment
  CAS-BOT-BC298918  Ericameria nauseosa var. bernardina Frank W. Peirson 1923-8-25 3998 San Bernardino Mill Creek Comment
  CAS-BOT-BC338963  Lasthenia californica F. W. Peirson 1919-4-16 389 San Bernardino Foot of mountains near Lytle Creek 533 Comment
  CAS-BOT-BC391195  Stellaria longipes subsp. longipes Frank W. Peirson 1922-6-24 4292 San Bernardino Ca. 1/4 mi. above South Fork Santa Ana River; San Bernardino Mts. 1935 Comment
  CAS-BOT-BC392272  Myosurus apetalus Frank W. Peirson 1924-5-15 4557 San Bernardino Summit above Doble 2100 Comment
  JEPS53071  Arabis pycnocarpa var. pycnocarpa Frank W. Peirson 1922-6-24 San Bernardino 1/4 mi. e. of S. Fork Santa Ana R. San Bernardino Mts., S. Fork Santa Ana R. 1950 Comment
  PASA1122  Scutellaria angustifolia Frank W. Peirson 1940-7-3 San Bernardino Road to Fish Hatchery south of Baldwin Lake, San Bernardino Mts. 2133 Comment
  PASA2061  Streptanthus major Frank W. Peirson 1930-7-8 San Bernardino Fish Hatcher Creek, Bear Valley, San Bernardino Mts. 2438 Comment
  PASA234  Trifolium grantianum Frank W. Peirson 1924-7-14 San Bernardino Lost Creek, Santa Ana tributary, San Bernardino Mts. 2209 Comment
  PASA855  Penstemon bridgesii Frank W. Peirson 1920-8-22 San Bernardino Foxsee Creek, San Bernardino Mts. 2590 Comment
  POM146279  Apocynum X floribundum F. W. Peirson 1924-7-12 787 San Bernardino Glen Martin , damp ground. 1799 Comment
  POM14742  Phacelia rotundifolia F. W. Peirson 1922-5-13 2979 San Bernardino Summit of Pilot Knob, Mohave Desert. 1524 Comment
  POM212924  Cheilanthes parryi F. W. Peirson 1935-4-18 11501 San Bernardino Whipple Mountains, Northern Part of Range Comment
  RSA0010907  Castilleja applegatei subsp. martinii F. W. Peirson 1930-7-5 9008 San Bernardino Road from Bear Lake to Holcomb Valley, San Bernardino Mts. 2134 Comment
  RSA0016144  Monardella australis subsp. australis F. W. Peirson 1924-7-6 4926 San Bernardino Rim Road, San Bernardino Mtns. 1829 Comment
  RSA0019820  Bromus tectorum F. W. Peirson 1921-5-30 1578 San Bernardino Road to Lone Pine Canyon, San Gabriel Mountains, from Cajon Pass. 991 Comment
  RSA0020146  Bromus tectorum F. W. Peirson 1924-5-14 4543 San Bernardino 12 miles east of Victorville. Comment
  RSA0050349  Arctostaphylos patula F. W. Peirson 1930-7-7 9023 San Bernardino Arrastre Flat near Holcomb Valley, San Bernardino Mts. 2256 Comment
  RSA0063186  Heuchera parishii F. W. Peirson 1930-7-4 9000 San Bernardino Open ridge above Greene Creek Canyon, Sugarloaf Peak. 2591 Comment
  RSA0081601  Pyrola aphylla F. W. Peirson 1920-8-23 823 -a San Bernardino South fork of Santa Ana River, San Bernardino Mts., southern California. 1921 Comment
  RSA0117284  Collinsia parviflora F. W. Peirson 1922-6-24 3141 San Bernardino Santa Ana River at mouth of South Fork. 1921 Comment
  RSA65351  Atriplex rosea F. W. Peirson 1924-9-1 s.n. San Bernardino North side of Baldwin Lake, San Bernardino Mountains. 2043 Comment
  RSA66812  Stanleya pinnata F. W. Peirson 1924-8-31 5125 San Bernardino open desert 2 miles W of Box S Ranch, North base of San Bernardino Mts 915 Comment
  RSA67356  Polygonum aviculare subsp. aviculare F. W. Peirson 1929-7-11 8462 San Bernardino Fawskin, Bear Valley, San Bernardino Mountains. 2043 Comment
  RSA69709  Mentzelia obscura F. W. Peirson 1932-5-10 9956 San Bernardino 10 miles N of Baker, on road toward Death Valley. 229 Comment
  RSA70514  Geranium richardsonii F. W. Peirson 1922-6-24 3122 San Bernardino S fork of Santa Ana River, San Bernardino Mts. 1982 Comment
  RSA71827  Saltugilia splendens F. W. Peirson 1924-7-16 4972 San Bernardino Burned area, Barton Flats Road, San Bernardino Mts. 1615 Comment
  RSA75120B  Nemacladus orientalis F. W. Peirson 1932-3-24 s.n.-b San Bernardino Near the town of Baker. 280 Comment
  RSA75348  Phacelia calthifolia F. W. Peirson 1932-3-24 9831 San Bernardino Near the town of Baker. 280 Comment
  RSA82527  Verbascum thapsus F. W. Peirson 1924-7-26 4978 San Bernardino Little San Gorgonio Creek, Oak Glen region. 1220 Comment
  RSA83337  Monardella odoratissima subsp. australis F. W. Peirson 1922-8-22 4729 San Bernardino South Fork of Santa Ana River, San Bernardino Mts. 2561 Comment
  RSA85613  Potentilla biennis F. W. Peirson 1922-8-27 4182 San Bernardino Banks of Santa Ana River about 1/4 mile above the South Fork 1936 Comment
  RSA87206  Lupinus formosus F. W. Peirson 1928-4-26 7927 San Bernardino 2 miles south of Warrens Well, east of Morongo Valley. Comment
  RSA90149  Astragalus lentiginosus var. fremontii F. W. Peirson 1930-4-15 8726 San Bernardino Baker to Las Vegas road at junction with road to Cima. Comment
  RSA90663  Chrysothamnus nauseosus subsp. consimilis F. W. Peirson 1929-10-11 8597 San Bernardino City Creek road, 2-3miles W of Bear Lake Dam, San Bernardino Mts. 2134 Comment
  RSA90664  Chrysothamnus nauseosus subsp. consimilis F. W. Peirson 1922-8-26 4050 San Bernardino Santa Ana River, San Bernardino Mountains 2057 Comment
  RSA91027  Erigeron aphanactis var. congestus F. W. Peirson 1951-1 3102 San Bernardino Summit of Sugarloaf Peak, San Bernardino Mts 2988 Comment
  RSA91029  Erigeron foliosus F. W. Peirson 1929-9-11 8590 San Bernardino Bear Valley Boulevard near Peter Pan Woodland Club, Bear Valley, San Bernardino Mts. 2073 Comment
  RSA91125  Trifolium microcephalum F. W. Peirson 1920-8-24 2254 San Bernardino Head of Santa Ana River, San Bernardino Mts. 2165 Comment
  RSA91137  Trifolium monanthum subsp. grantianum F. W. Peirson 1906-8-15 4070 San Bernardino Bluff Lake, San Bernardino Mts. 2287 Comment
  RSA91139  Trifolium monanthum subsp. grantianum F. W. Peirson 1924-7-14 4950 San Bernardino Lost Creek, San Bernardino Mts. Comment
  RSA91232  Alnus rhombifolia F. W. Peirson 1924-7-12 4930 San Bernardino Santa Ana River. 1921 Comment
  RSA91244  Vicia americana F. W. Peirson 1916-7-4 2017 San Bernardino Rim road, San Bernardino Mts. 1524 Comment
  RSA91340  Amorpha californica F. W. Peirson 1924-7-5 4919 San Bernardino Gold Mt. near Baldwin Lake. 2210 Comment
  RSA91468  Scirpus microcarpus F. W. Peirson 1922-7-17 4321 San Bernardino San Antonio Canyon, San Gabriel Mtns. 1296 Comment
  RSA91505  Trifolium ciliolatum F. W. Peirson 1920-5-28 2804 San Bernardino 0.5 miles above Camp Baldy in San Antonio Canyon, San Gabriel Mts 1341 Comment
  RSA91778  Ericameria linearifolia F. W. Peirson 1919-4-16 366 San Bernardino lower Cajon Canyon, San Gabriel Mts. 610 Comment
  RSA91906  Phalaris canariensis F. W. Peirson 1922-6-20 3107 San Bernardino 4 miles east of San Bernardino. Comment
  RSA91973  Elymus elymoides F. W. Peirson 1923-8-24 3979 San Bernardino Summit of Mt. San Gorgonio, San Bernardino Mountains. 3500 Comment
  RSA92052  Bromus berteroanus F. W. Peirson 1935-4-20 11702 San Bernardino Grade east of Baker. Alt. 1500 ft. 457 Comment
  RSA92151  Eleocharis parishii F. W. Peirson 1928-9-5 8201 San Bernardino Below Cottonwood Spring, 0.5 mile north of Old Woman Springs, southern Mojave Desert 970 Comment
  RSA92278  Layia glandulosa F. W. Peirson 1924-5-14 4554 San Bernardino 2 miles N of Cajon Pass. 915 Comment
  RSA92412  Coreopsis bigelovii F. W. Peirson 1930-4-14 8707 San Bernardino About 3 miles north of Cave Spring. Comment
  RSA92506A  Stylocline micropoides F. W. Peirson 1935-4-18 11480 San Bernardino Copper basin creek, Whipple Mtns., eastern San Bernardino county 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
  RSA92878  Baileya multiradiata F. W. Peirson 1927-7-10 7353 San Bernardino 1-2 miles W of Mexican Well, eastern San Bernardino County 1220 Comment
  RSA93167  Baccharis emoryi F. W. Peirson 1920-12-30 1297 San Bernardino E of bridge across Santa Ana River, SE of San Bernardino 305 Comment
  RSA93241  Chrysothamnus teretifolius F. W. Peirson 1921-12-18 2649 San Bernardino Base of Pilot Knob, Granite Wells, NW Mojave Desert Comment
  RSA93289  Corethrogyne filaginifolia F. W. Peirson 1923-8-25 4736 San Bernardino Mill Creek, San Bernardino Mts. 1646 Comment
  RSA93294  Ericameria cooperi F. W. Peirson 1928-4-25 7920 San Bernardino White Tank region 11 miles S of 29 Palms. Comment
  RSA93320  Machaeranthera carnosa F. W. Peirson 1924-8-31 5131 San Bernardino Box S Springs, north base of San Bernardino Mountains. 1082 Comment
  RSA93347  Xylorhiza tortifolia F. W. Peirson 1917-5-13 1269 San Bernardino West of Victorville. Comment
  RSA93438  Brickellia microphylla F. W. Peirson 1921-12-18 2646 San Bernardino Base of Pilot Knob, Granite Wells, NW Mojave Desert Comment
  RSA93626  Antennaria rosea F. W. Peirson 1906-8-17 1312 San Bernardino South Fork of Santa Ana River. 2591 Comment
  RSA93628  Antennaria rosea F. W. Peirson 1924-7-14 4963 San Bernardino Summit of ridge between Lost Creek and South Fork of Santa Ana River. San Bernardino Mts. 2866 Comment
  RSA93731  Acamptopappus sphaerocephalus var. sphaerocephalus F. W. Peirson 1930-4-29 8762 San Bernardino Box S. Spring, North of San Bernardino Mts. Southern California. 1082 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
  RSA93774  Lobelia cardinalis subsp. graminea F. W. Peirson 1923-8-26 3995 San Bernardino Mill Creek; southern San Bernardino Mountains. 1220 Comment
  RSA93848  Baileya pleniradiata F. W. Peirson 1916-7-8 1366 San Bernardino Box 'S' Springs near north base of San Bernardino Mtns. 1082 Comment
  RSA93872  Helenium puberulum F. W. Peirson 1923-8-26 3986 San Bernardino Above Mill Creek Road; San Bernardino Mountains. 1220 Comment
  RSA93887  Helenium bigelovii F. W. Peirson 1924-7-14 4960 San Bernardino Small hillside cienega Lost Creek, San Bernardino Mts, southern California. 2591 Comment
  RSA93966  Machaeranthera pinnatifida subsp. gooddingii F. W. Peirson 1935-4-10 11489 San Bernardino Rocky canyon walls, Copper Basin Creek, Whipple Mts. Comment
Read comments
Aug 9 2011
  RSA94167  Monoptilon bellioides F. W. Peirson 1922-5-14 4741 San Bernardino Half between Barstow and Victorville Comment
  RSA94169  Monoptilon bellidiforme F. W. Peirson 1926-4-27 6681 San Bernardino Open desert near Box S Ranch, N base of San Bernardino Mts Comment
  RSA94575  Artemisia biennis F. W. Peirson 1924-9-1 5160 San Bernardino North side of Baldwin Lake, San Bernardino Mountains. 2043 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
  RSA94976  Prenanthella exigua F. W. Peirson 1927-5-7 7276 San Bernardino 1 mile east of Kramer. Comment
  RSA95051  Sonchus asper F. W. Peirson 1923-3-18 1487 San Bernardino Along ditch south of Chino. Comment
  RSA95090  Calycoseris wrightii F. W. Peirson 1935-4-18 11490 San Bernardino Copper basin creek, Whipple Mtns., eastern San Bernardino county Comment
  RSA95110  Agoseris heterophylla var. heterophylla F. W. Peirson 1920-8-24 2255 San Bernardino Big Meadow, upper Santa Ana River 2133 Comment
  RSA95177  Hieracium albiflorum F. W. Peirson 1923-8-25 3990 San Bernardino Shaded bank above Vivian Creek, San Bernardino Mts. 2287 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
  RSA97320  Lomatium lucidum F. W. Peirson 1921-5-29 4462 San Bernardino Summit of Cajon Pass. 1220 Comment
  RSA97418  Tauschia parishii F. W. Peirson 1924-5-29 2424 San Bernardino Mohave River, north base of San Bernardino Mountains. 884 Comment
  RSA97431  Arceuthobium californicum F. W. Peirson 1920-8-22 2818 San Bernardino East of Foxesee Creek [Forsee Creek], San Bernardino Mountains. 2134 Comment
  CAS-BOT-BC224621  Dichondra occidentalis Frank W. Peirson 1927-4-19 7250 San Diego Headland south of Torrey Pines Comment
  CAS-BOT-BC266507  Githopsis diffusa F. W. Peirson 1925-5-18 5962 San Diego On N shore of Cuyamaca Lake, Cuyamaca Mountains, E part of county 1402 Comment
  CAS-BOT-BC307418  Gnaphalium palustre Frank W. Peirson 1924-6-22 4778 San Diego Near Country Club, Palomar 1584 Comment
  CAS-BOT-BC407815  Gilia ochroleuca subsp. exilis F. W. Peirson 1929-5-4 8342 San Diego About 5 miles N of Oak Grove 762 Comment
  CAS-BOT-BC407817  Gilia ochroleuca subsp. exilis F. W. Peirson 1903-5-15 3507 San Diego Tia Juana river, Tia Juana Comment
  JEPS4977  Eriophyllum wallacei Frank W. Peirson 1925-5-16 5935 San Diego about one mi n Laguna Lakes camp; Laguna Mts. 1828 Comment
  JEPS51514  Scleranthus annuus subsp. annuus Frank W. Peirson 1926-4-30 6691 San Diego on road to Henshaw Dam 1 mi away Pala Comment
  JEPS54139  Thysanocarpus laciniatus Frank W. Peirson 1925-5-17 5942 San Diego e slope Laguna Mts., Vallecito Canyon Vallecito Canyon; e slope Laguna Mts., Vallecito Canyon Comment
  JEPS54840  Astragalus palmeri Frank W. Peirson 1922-4-13 2899 San Diego Mountain Springs grade 1066 Comment
  JEPS55409  Lotus argophyllus Frank W. Peirson 1925-5-18 5977 San Diego n shore Cuyamaca Lake 1402 Comment
  PASA1131  Trichostema lanatum var. denudatum Frank W. Peirson 1925-5-18 San Diego Grade up Laguna Mts Comment
  PASA1884  Boisduvalia densiflora Frank W. Peirson 1920-6-25 San Diego Morettis 883 Comment
  PASA2172  Amblyopappus pusillus Frank W. Peirson 1923-3-27 San Diego Imperial Beach Comment
  PASA2533  Delphinium parryi Frank W. Peirson 1923-3-27 San Diego Imperial Beach Comment
  POM17785  Lilaea scilloides F. W. Peirson 1923-3-28 3404 San Diego Mesa Creek, San Diego 122 Comment
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May 13 2016
  POM20542  Galium nuttallii F. W. Peirson 1923-3-26 3357 San Diego 0.5 mile north of Encinitas. Comment
  POM87083  Lupinus agardhianus F. W. Peirson 1927-4-19 7241 San Diego Headland south of Torrey Pines, San Diego Comment
  RSA100341  Githopsis diffusa subsp. candida F. W. Peirson 1925-5-19 6003 San Diego 1 mile S of Moretti's N of Santa Ysabel 945 Comment
  RSA128736  Chaenactis carphoclinia var. peirsonii F. W. Peirson 1927-4-14 7182 San Diego Near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Boulevard. 305 Comment
  RSA193457  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1929-3-31 8284 San Diego Foster Grade, east of Julian. Comment
  RSA292079  Micropus californicus F. W. Peirson 1925-5-18 5981 San Diego South shore of Cuyamaca Lake. 1402 Comment
  RSA401643A  Monardella nana subsp. nana F. W. Peirson 1924-6-25 4848 San Diego Laguna Mountains, Laguna Lakes region. Comment
  RSA64773  Oxytheca trilobata F. W. Peirson 1920-6-24 2721 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA65241  Chorizanthe procumbens F. W. Peirson 1926-4-30 6692 San Diego Sandy washes and openings among shrubs; 1 mile east of Pala, San Diego Co., California. 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
  RSA65621  Opuntia echinocarpa var. wolfii F. W. Peirson 1928-4-20 7853 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
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Mar 19 2020
  RSA65626  Elatine brachysperma F. W. Peirson, W. L. Jepson 1927-4-19 7242 San Diego Headland south of Torrey Pines, Comment
  RSA65887  Aphanisma blitoides F. W. Peirson, W. L. Jepson 1927-4-19 7256 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA66228  Boechera californica F. W. Peirson 1926-5-1 6706 San Diego Along trail from Oak Grove to Palomar Mt. Comment
  RSA66329  Polygonum amphibium var. stipulaceum F. W. Peirson 1924-6-25 4852 San Diego Little Lake, Laguna Mountains. Comment
  RSA66755  Caulanthus hallii F. W. Peirson 1929-5-4 8344 San Diego About 5 miles N of Oak Grove. 762 Comment
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May 10 2017
  RSA68660  Zigadenus venenosus var. venenosus Frank W. Peirson 1929-5-5 8361 San Diego South slope of divide between Oak Grove and Warners Hot Springs. 915 Comment
  RSA69697  Mentzelia montana F. W. Peirson 1920-6-24 4451 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA69849  Platanthera leucostachys Frank W. Peirson 1924-6-22 4787 San Diego Near the Country Club, Palomar Mountains. 1585 Comment
  RSA70378  Euphorbia palmeri F. W. Peirson 1920-6-24 2201 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA70542  Euphorbia eriantha F. W. Peirson 1928-3-24 7743 San Diego San Felipe Creek, 2 miles below Sentenac Canyon, eastern San Diego County. Comment
  RSA70609  Agave deserti subsp. deserti Frank W. Peirson 1928-3-24 7753 San Diego San Felipe Canyon [Banner Canyon], shortly above the Narrows Comment
  RSA70617  Chamaesyce melanadenia F. W. Peirson 1924-6-26 4865 San Diego Lower part of Vallecito Canyon Comment
  RSA70869  Arctostaphylos pringlei subsp. drupacea F. W. Peirson 1920-5-24 2197 San Diego east trail to Palomar Mt. 1738 Comment
  RSA70879  Arctostaphylos glandulosa var. adamsii F. W. Peirson 1929-5-4 8360 San Diego On trail from Oak Grove to Palomar Mtn. 1067 Comment
  RSA71805  Gilia stellata F. W. Peirson 1922-4-13 2861 San Diego Mountain Springs, eastern San Diego County. Comment
  RSA72313  Gilia diegensis F. W. Peirson 1925-5-15 5903 San Diego 4 miles south of Buckman Spring. 1159 Comment
  RSA73059  Leptosiphon ciliatus F. W. Peirson 1920-6-24 2172 San Diego Meadow at foot of Morgan Hill, Palomar Mts. Comment
  RSA73286  Linanthus pungens subsp. hallii F. W. Peirson 1927-4-17 7227 San Diego South of boulevard on Mountain Springs Grade 1128 Comment
  RSA74725  Nama demissa var. deserti F. W. Peirson 1922-4-13 985 San Diego Mountain Springs grade east of Jacumba; eastern San Diego. 1067 Comment
  RSA74952  Phacelia distans F. W. Peirson 1923-3-26 3384 San Diego Agua Hedionda Comment
  RSA75133  Nemacladus ramosissimus F. W. Peirson 1925-5-15 5898 San Diego 4 miles south of Buckman Springs. 1220 Comment
  RSA75875  Nemophila menziesii F. W. Peirson 1929-5-4 8353 San Diego Trail from Oak Grove to Palomar Mountain. 1296 Comment
  RSA77041  Sphaeralcea ambigua subsp. rosacea F. W. Peirson 1925-5-15 5888 San Diego summit of Mountain Springs Grade, eastern San Diego [County.] 1067 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
  RSA77166  Ceanothus leucodermis F. W. Peirson 1925-5-17 5950 San Diego Lower part of Vallecito Canyon. Comment
  RSA77357  Ceanothus cuneatus F. W. Peirson 1926-5-1 6718 San Diego Public Camp Grounds, Oak Grove, Northeastern San Diego County. 854 Comment
  RSA77417  Citrullus lanatus F. W. Peirson 1923-9-10 4047 San Diego 3 mi. from coast at Torrey Pines Comment
  RSA77699  Ceanothus leucodermis F. W. Peirson 1929-5-4 8359 San Diego Oak Grove 869 Comment
  RSA77709  Ceanothus greggii var. perplexans F. W. Peirson 1924-6-26 4870 San Diego About half way down Vallecinto Canyon Comment
  RSA77849  Callitriche marginata F. W. Peirson 1923-3-28 3367 San Diego Mesa about 6 miles North of San Diego. 122 Comment
  RSA79590  Cryptantha barbigera F. W. Peirson 1925-5-15 5890 San Diego summit of Mountain Springs Grade, eastern San Diego 1067 Comment
  RSA79612  Cryptantha intermedia F. W. Peirson 1927-4-19 7245 San Diego Headland south of Torrey Pines, Comment
  RSA80053  Veronica peregrina subsp. xalapensis F. W. Peirson 1920-6-24 4496 San Diego East foot of Morgan Hill, Palomar Mts. 1433 Comment
  RSA80202  Plagiobothrys bracteatus F. W. Peirson 1923-3-28 3386 San Diego About 6 miles north of San Diego Comment
  RSA80221  Penstemon clevelandii F. W. Peirson 1928-3-24 7732 San Diego San Felipe Creek, Sentenac Canyon. Comment
  RSA80226  Penstemon clevelandii F. W. Peirson 1927-4-17 7224 San Diego North of Boulevard, summit of Mountain Springs Grade. Comment
  RSA80340  Orthocarpus densiflorus var. gracilis F. W. Peirson 1926-4-30 6703 San Diego Oprn grassy field near Henshaw Dam, northeastern San Diego Co. 854 Comment
  RSA80442  Mimulus fremontii F. W. Peirson 1925-5-15 5901 San Diego 4 mi. south of Buckman Springs, eastern San Diego Co. Comment
  RSA83926  Ranunculus californicus F. W. Peirson 1924-6-22 4794 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA84317  Isoetes howellii F. W. Peirson 1923-3-28 3366 San Diego near boulevard on mesa about 6 miles north of San Diego 121 Comment
  RSA84472  Clematis pauciflora F. W. Peirson 1923-3-27 s.n. San Diego Mesa. About 6 miles north of San Diego. 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
  RSA86834  Rubus ursinus F. W. Peirson 1924-6-24 4814 San Diego Henshaw Grade, south slope of Palomar Mts. 1524 Comment
  RSA86855  Prunus fremontii F. W. Peirson 1922-4-13 2895 San Diego Near Mountain Springs. 793 Comment
  RSA86987  Senna armata F. W. Peirson 1928-3-24 7752 San Diego San Felipe Canyon [Banner Canyon], shortly above the Narrows Comment
  RSA87037  Lupinus succulentus F. W. Peirson 1923-3-27 3401 San Diego Otay Creek. 76 Comment
  RSA87218  Lupinus excubitus var. medius F. W. Peirson 1922-4-13 2901 San Diego Mountain Springs grade east of Jacumba; eastern San Diego 1067 Comment
  RSA91335  Rupertia rigida F. W. Peirson 1924-6-25 4855 San Diego Laguna Mountains: Meadow near Laguna Lakes. 1524 Comment
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Oct 10 2014
  SD87560  Linanthus orcuttii Frank W. Peirson 1920-6-24 2173 San Diego Ridge westward from Palomar Peak (IPB 2/06) 1431 Comment
  SD87561  Allium haematochiton Frank W. Peirson 1922-4-14 2914 San Diego Torrey Pines. Comment
  SD87587 Image available Navarretia capillaris F. W. Peirson 1924-6-22 4772 San Diego Palomar, near head of Doane Valley 1584 Comment
  SD87681  Vicia ludoviciana F. W. Peirson 1923-3-27 3395 San Diego Imperial Beach, saline flat back of sand dunes Comment
  SD87699  Erigeron divergens F. W. Peirson 1923-3-27 3365 San Diego Otay Creek; 2 miles below Otay Dam Comment
  SD87715  Collinsia concolor F. W. Peirson 1920-7-25 2191 San Diego Palomar Mtns, meadow at east foot of Morgan Hill. (IPB 10/06) 1435 Comment
  SD87763  Downingia cuspidata F. W. Peirson 1923-3-28 3394 San Diego Mesa, 6.0 miles north of San Diego. Comment
  UC1100570  Carex subfusca Frank W. Peirson 1925-5-15 5918 San Diego Laguna Lakes Camp Laguna Mountains 1752 Comment
  UC501526  Githopsis diffusa subsp. candida Frank W. Peirson 1925-5-19 6003 San Diego 1 mi s Morettis 944 Comment
  UC643227  Boerhavia triquetra Mabel B. Peirson 1939-11-25 12900 San Diego s. side San Felipe Canyon (immediately w. of the Narrows) Comment
  UC672541  Mimulus palmeri Frank W. Peirson 1925-5-15 5919 San Diego Laguna Lakes Camp Laguna Mts. Comment
  UC673514  Zigadenus venenosus var. venenosus Frank W. Peirson 1925-5-18 5989 San Diego along n shore Cuyamaca Lake 1402 Comment
  RSA0017268  Gilia ochroleuca subsp. exilis F. W. Peirson 1929-5-4 8342 San Diego About 5 miles N of Oak Grove. 762 Comment
  RSA0031392  Boechera retrofracta F. W. Peirson 1925-5-15 5922 San Diego Laguna Lakes, Laguna Mts 1524 Comment
  RSA0070478  Orobanche californica subsp. feudgei Frank W. Peirson 1926-5-1 6722 San Diego Bottom lands of Temecula River, Oak Grove. Comment
  RSA0086627  Viola purpurea F. W. Peirson 1926-5-1 67067 San Diego Along trail from Oak Grove to Palomar Mt. 1524 Comment
  RSA0126421  Nemacladus longiflorus var. longiflorus F. W. Peirson 1926-5-1 6719 San Diego Bottom lands of temecula River, Oak grove. 854 Comment
  RSA90261  Lathyrus vestitus subsp. alefeldii F. W. Peirson 1924-6-27 4882 San Diego Monument Peak, Laguna Mts. Comment
  RSA90300  Lotus hamatus F. W. Peirson 1926-4-30 6696 San Diego About 1 mile from Pala on the road to Henshaw Dam Comment
  RSA90855  Carex triquetra F. W. Peirson 1926-4-30 6698 San Diego Bushy slope about 2 miles east of Pala. Comment
  RSA90957  Erigeron divergens F. W. Peirson 1924-6-25 4845 San Diego Above camp [Laguna Camp?], Laguna Lakes Region, Laguna Mountains. Comment
  RSA90989  Trifolium wormskioldii F. W. Peirson 1925-5-19 6004 San Diego San Luis Ray River. 915 Comment
  RSA91097  Trifolium variegatum F. W. Peirson 1920-6-24 4421 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA91202  Lupinus excubitus var. hallii F. W. Peirson 1924-6-22 4789 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA91315  Lupinus longifolius F. W. Peirson 1923-3-28 3402 San Diego Buena vista Creek near Vista 107 Comment
  RSA91329  Hoita orbicularis F. W. Peirson 1924-6-22 4793 San Diego Near the Country Club, Palomar Mountains. 1585 Comment
  RSA91554  Trifolium willdenovii F. W. Peirson 1925-5-18 5971 San Diego Cuyamaca Lake, eastern San Diego Co. 1402 Comment
  RSA91785  Ericameria linearifolia F. W. Peirson 1929-3-31 8287 San Diego Lower part of Foster Grade E of Julian. 915 Comment
  RSA92261  Porophyllum gracile F. W. Peirson 1928-4-22 7878 San Diego The Narrows, San Felipe Creek, eastern San Diego County. Comment
  RSA92382  Psilocarphus brevissimus F. W. Peirson 1924-6-25 4835 San Diego near old Rangers Cabin, Laguna Lakes region, Laguna Mtns. Comment
  RSA92500  Stylocline gnaphaloides F. W. Peirson 1922-2-14 2855 San Diego Torrey Pines Comment
  RSA92989  Lasthenia coronaria F. W. Peirson 1927-4-19 7248 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA93716  Brickellia arguta var. odontolepis F. W. Peirson 1928-4-20 7851 San Diego canyon of San Felipe Creek, Sentenac Canyon, E San Diego Co. Comment
  RSA93955  Hymenoclea salsola F. W. Peirson 1927-4-17 7232 San Diego Summit of Mountain Springs Grade. Comment
  RSA94386  Dyssodia porophylloides F. W. Peirson 1925-5-15 5889 San Diego summit of Mountain Springs Grade, eastern San Diego 1067 Comment
  RSA94388  Dyssodia porophylloides F. W. Peirson 1928-4-20 7855 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA94602  Anisocoma acaulis F. W. Peirson 1929-5-5 8364 San Diego South slope of divide between Oak Grove and Warner's Hot Springs. 915 Comment
  RSA95349  Ceanothus oliganthus F. W. Peirson 1926-5-1 6711 San Diego Along trail from Oak Grove to Palomar Mt. Comment
  RSA95375  Sidalcea malviflora subsp. sparsifolia F. W. Peirson 1925-5-18 5980 San Diego North shore of Cyamaca Lake 1402 Comment
  RSA97272  Cornus occidentalis F. W. Peirson 1934-6-22 4786 San Diego Palomar Mt. 1524 Comment
  RSA97293  Garrya flavescens subsp. flavescens F. W. Peirson 1924-6-26 4869 San Diego About half way down Vallecito Canyon, east slope of Laguna Mts Comment
  RSA97294  Garrya fremontii F. W. Peirson 1924-6-27 4886 San Diego Monument Peak, Laguna Mts. Comment
  RSA97351  Sanicula arguta F. W. Peirson 1922-4-14 2891 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  SEINET10461006  Nemacladus pinnatifidus Frank W. Peirson 1925-5-15 Peirson 5899 b San Diego 4 miles south of Buckman Springs; on burnt-over hill slope Comment
  PASA2797  Erigeron salsuginosus F. W. Peirson 1921-8-9 San Francisco Aspen Meadows (S.F. San Joaquin) 2514 Comment
  RSA63736  Fritillaria viridea Frank W. Peirson 1925-3-25 5674 San Luis Obispo Morro Creek 366 Comment
  RSA66084  Cakile edentula F. W. Peirson 1920-7-28 1897 San Luis Obispo 1 mile S of Pismo. Comment
  SD87674  Hemizonia congesta subsp. luzulifolia F. W. Peirson 1923-6-26 San Luis Obispo Comment
  UCR19595  Mentzelia affinis F. W. Peirson 1929-5-18 8404 San Luis Obispo Upper Cuyama Valley 427 Comment
  CAS-BOT-BC81666  Ephedra californica Frank W. Peirson 1938-8-12 12381 San Luis Obispo Cuyama Valley Comment
  RSA0004736  Eriastrum densifolium subsp. densifolium F. W. Peirson 1920-7-29 2224 San Luis Obispo 1 mile south of Pismo Beach. Comment
  RSA114698  Lomatium caruifolium F. W. Peirson 1925-3-20 5685 San Luis Obispo Between Morro and San Luis Comment
  RSA80353  Conium maculatum F. W. Peirson 1923-6-26 7296 San Luis Obispo South of San Luis Obispo Comment
  RSA90743  Astragalus pomonensis F. W. Peirson 1920-7-29 2229 San Luis Obispo 1 mile south of Pismo Beach. Comment
  RSA92165  Schoenoplectus californicus F. W. Peirson 1920-7-29 4272 San Luis Obispo 1 mile south of Pismo Beach. Comment
  RSA92618  Salix lasiolepis var. bigelovii F. W. Peirson 1925-3-25 9606 San Luis Obispo Morro. Comment
  RSA92631  Monolopia lanceolata F. W. Peirson 1929-5-18 8401 San Luis Obispo Cuyama Valley Road, ca. 62 miles east of the Coast Boulevard Comment
  RSA94179  Hemizonia luzulifolia F. W. Peirson, Mabel Peirson 1920-7-30 2232 San Luis Obispo Near Morro. Comment
  UC599266  Ephedra californica Frank W. Peirson 1938-4-12 12381 San Luis Obispo upper part of valley, which is in the extreme se corner of county Cuyama Valley Comment
  PASA675  Geranium dissectum Mabel B. Peirson 1926-2-24 San Mateo Moss beach Comment
  RSA91713  Gnaphalium ramosissimum F. W. Peirson 1925-9-13 6426 San Mateo Rockaway beach 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
  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
  PASA1108  Lotus scoparius Frank W. Peirson 1929-5-17 Santa Barbara Surf Comment
  POM128751  Pholistoma racemosum Mabel Peirson 1927-4-14 7146 Santa Barbara Santa Cruz Island. Prisoners Cove. Comment
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Dec 30 2014
  RSA65438  Calandrinia maritima F. W. Peirson 1934-3-26 11050 Santa Barbara Santa Cruz Island. Slope west of inlet just above sea level, Frye's Harbor. Comment
  RSA71098  Calystegia macrostegia subsp. cyclostegia F. W. Peirson 1929-5-17 8376 Santa Barbara On sand dunes at Surf. Comment
  RSA71101  Calystegia macrostegia subsp. cyclostegia F. W. Peirson 1929-4-20 8290 Santa Barbara El Capitan Camp, shore nw. of Santa Barbara Comment
  RSA71106  Calystegia macrostegia subsp. macrostegia F. W. Peirson 1934-3-25 11022 Santa Barbara Santa Cruz island, Frye's harbor. Comment
  RSA76026  Pholistoma racemosum Mabel Peirson 1927-4-14 7146 Santa Barbara Santa Cruz Island. Prisoners Cove. Comment
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Dec 30 2014
  RSA77094  Lyonothamnus floribundus subsp. aspleniifolius F. W. Peirson 1934-3-26 11053 Santa Barbara Santa Cruz Island. Frye Creek Basin Comment
  RSA77635  Marah macrocarpa var. major F. W. Peirson 1934-3-26 11059 Santa Barbara Santa Cruz Island. Frye's Harbor. Comment
  RSA82228  Castilleja affinis F. W. Peirson 1934-3-26 11051 Santa Barbara Santa Cruz Island. West of inlet of Fryes Harbor. 61 Comment
  RSA82232  Castilleja affinis F. W. Peirson 1929-4-20 8305 Santa Barbara Surf. Comment
  RSA82397  Salvia spathacea F. W. Peirson 1929-4-20 8297 Santa Barbara El Capitan Auto Camp, on coast west of Santa Barbara. Comment
  RSA84873  Ranunculus hebecarpus F. W. Peirson 1925-3-26 5715 Santa Barbara Side canyon at Gaviota Pass. 183 Comment
  RSA85037  Dryopteris arguta F. W. Peirson 1934-3-26 11055 Santa Barbara in canyon, along stream; Frye's Harbor, Santa Cruz Island Comment
  RSA85060  Adenostoma fasciculatum var. fasciculatum Mabel Peirson 1934-3-26 11099 Santa Barbara Santa Cruz Island. Prisoners Cove. Comment
  UC1366095  Ribes divaricatum var. pubiflorum Frank W. Peirson 1938-4-13 12384 Santa Barbara 2 mi s Surf (1/2 mi up stream); Bear Creek Comment
  UC501544  Calystegia macrostegia subsp. cyclostegia Frank W. Peirson 1929-4-20 8290 Santa Barbara El Capitan Auto Camp El Capitan Auto Camp (near small stream) 0 Comment
  UCR136643  Agrostis viridis F. W. Peirson 1929-4-20 8292 Santa Barbara Central Coast, El Capitan Auto Camp 3 Comment
  UCR17953  Chorizanthe angustifolia var. angustifolia F. W. Peirson 1929-4-20 8310 Santa Barbara Central Coast, Surf 15 Comment
  PASA1012  Collinsia bicolor Frank W. Peirson 1929-5-18 Santa Barbara Miguelito Park, 4 miles south of Lompoc 121 Comment
  RSA0042708  Thysanocarpus conchuliferus F. W. Peirson 1934-3-26 11054 Santa Barbara Santa Cruz Island. Slope east of canyon above Frye s Harbor. Comment
  RSA66109  Cardamine californica var. integrifolia Mabel Peirson 1927-4-12 7134 Santa Barbara Lady s Harbor, Santa Cruz Island Comment
  RSA69409  Delphinium parryi subsp. blochmaniae F. W. Peirson 1929-5-18 8389 Santa Barbara 10 miles east of Lompoc on road to Buellton. 152 Comment
  RSA74185  Phacelia cicutaria var. hispida F. W. Peirson 1929-5-18 8395 Santa Barbara Cuyama Valley Road, 13 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
  RSA84370  Lithophragma cymbalaria Mabel Peirson 1927-4-12 7136 Santa Barbara Santa Cruz Island. Canyon at Lady s Harbor. Comment
  RSA90310  Lotus salsuginosus F. W. Peirson 1925-3-27 5720 Santa Barbara hills back of Santa Barbara 152 Comment
  RSA90382  Lotus strigosus F. W. Peirson 1929-5-17 8368 Santa Barbara Seaward face of sand dunes, flat ground near railroad track, Surf. Comment
  RSA91083  Trifolium depauperatum var. truncatum F. W. Peirson 1934-3-25 11030 Santa Barbara Santa Cruz Island: Sea bluffs west of canyon of Fryes Harbor Comment
  RSA91485  Isolepis cernua F. W. Peirson 1920-7-28 2211 Santa Barbara Canada del Refugio, at sea level. 0 Comment
  RSA91714  Pseudognaphalium californicum F. W. Peirson 1929-5-17 8375 Santa Barbara On sand dunes at Surf. Comment
  RSA92181  Layia hieracioides F. W. Peirson 1929-5-17 8379 Santa Barbara South of Bear Creek, 2 miles south of Surf Comment
  RSA92510  Eriophyllum multicaule F. W. Peirson 1929-5-17 8381 Santa Barbara Grade beyond Bear Creek, 2 miles south of Surf. Comment
  RSA92606  Salix lasiolepis F. W. Peirson 1934-3-28 11078 Santa Barbara Santa Cruz Island. Diablo Canyon, about 1 mile west of Frye's Harbor Comment
  RSA92871  Urtica urens F. W. Peirson 1934-3-27 11074 Santa Barbara Santa Cruz Island. Along ridge west of canyon of Frye's Harbor. 457 Comment
  RSA93862  Encelia californica F. W. Peirson 1925-3-27 5718 Santa Barbara hills back of Santa Barbara 152 Comment
  RSA94621  Venegasia carpesioides F. W. Peirson 1929-4-20 8289 Santa Barbara canyon at El Capitan Camp on coast of Santa Barbara Co, west of Santa Barbara. Comment
  RSA95020  Malacothrix saxatilis var. saxatilis F. W. Peirson 1920-7-28 2240 Santa Barbara Canada del Refugio. 0 Comment
  SD87586  Lasthenia californica Frank W. Peirson 1929-4-20 8309 Santa Barbara Tops of sand dunes. Comment
  PASA1098  Lotus micranthus Frank W. Peirson 1923-7-29 Santa Clara Santa Cruz Mts. Road from Santa Cruz to Los Gatos slightly east of summit Comment
  RSA77707  Ceanothus papillosus F. W. Peirson 1912-6-28 737 Santa Cruz Santa Cruz Mts Comment
  UCR66596  Navarretia squarrosa F. W. Peirson 1925-8-3 6331 Santa Cruz San Lorenzo River, about 1 mile from Boulder Comment
  RSA100551  Campanula prenanthoides F. W. Peirson 1923-7-29 3868 Santa Cruz Along blvd slightly east of summit of Santa Cruz Mts. Comment
  RSA90285  Lathyrus vestitus subsp. vestitus F. W. Peirson 1912-6-29 2010 Santa Cruz State Park, Santa Cruz. Comment
  RSA90421  Lotus micranthus F. W. Peirson 1923-7-29 3606 Santa Cruz Slightly east of summit on road from Santa Cruz to Los Gatos. Comment
  RSA69258  Kalmia polifolia subsp. microphylla F. W. Peirson 1926-6-23 6935 Shasta Trail to summit of Lassen Peak, Lassen National Park. Comment
  RSA69627  Juncus mexicanus F. W. Peirson 1932-7-9 10271 Shasta Below Burney Spring 1433 Comment
  RSA70304  Juncus orthophyllus F. W. Peirson 1932-7-13 10123 Shasta Thousand-Lake Basin 1951 Comment
  RSA70568  Vaccinium uliginosum subsp. occidentale F. W. Peirson 1932-7-14 10195 Shasta Thousand-Lake Basin. 1951 Comment
  RSA71919  Ipomopsis congesta subsp. congesta F. W. Peirson 1932-7-12 10201 Shasta Shasta County: along rim of Red Crater, Thousand Lake Basin. 2012 Comment
  RSA766344  Eriogonum marifolium F. W. Peirson 1932-7-13 10140 Shasta 1000-Lake Basin. 1951 Comment
  RSA77697  Ceanothus prostratus F. W. Peirson 1932-7-14 10180 Shasta Thousand Lake Basin. 1951 Comment
  RSA80107  Mimulus nanus var. mephiticus F. W. Peirson 1932-7-16 10309 Shasta Below old log cabin and along the road; Burney Spring. 1433 Comment
  RSA85218  Horkelia fusca var. brownii F. W. Peirson 1932-7-9 10274 Shasta Below Burney Spring 1433 Comment
  RSA88779  Carex scopulorum var. bracteosa F. W. Peirson 1932-7-15 10115 Shasta Wet margin of upper lake at east foot of Magee, Thousand-Lake Basin. 2195 Comment
  SD87666  Arenaria congesta Frank W. Peirson 1932-7-11 10145 Shasta South of Burney, 1000-Lake Basin. 1950 Comment
  UC501430  Collomia grandiflora Frank W. Peirson 1932-7-16 10308 Shasta top of wooded slope behind camp Burney Spring 1432 Comment
  UC501477  Clarkia rhomboidea Frank W. Peirson 1932-7-9 10281 Shasta Burney Spring 1432 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
  CAS-BOT-BC115053  Carex vesicaria Frank Warrington Peirson 1932-7-10 10116 Shasta Margina of Lake Eiler, 1000-Lake Basin 1950 Comment
  RSA0018034  Ribes roezlii F. W. Peirson 1932-7-14 10160 Shasta Eiler Butte, Thousand-Lake Basin. 2012 Comment
  RSA65903  Eriogonum ursinum F. W. Peirson 1932-7-12 10141 Shasta along the rim of Red Crater, in volcanic soil Thousand Lake Basin. 1982 Comment
  RSA65955  Eriogonum umbellatum var. polyanthum F. W. Peirson 1932-7-16 10303 Shasta 1 mi. above Burney Spring, on road to Thousand- Lake Basin. 1463 Comment
  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
  RSA72303  Navarretia leptalea F. W. Peirson 1932-7-9 10288 Shasta Burney Spring. 1433 Comment
  RSA74856  Phacelia heterophylla subsp. virgata F. W. Peirson 1932-7-17 10321 Shasta Wallace Ranch, Goose Valley. 915 Comment
  RSA79464  Collinsia torreyi var. latifolia F. W. Peirson 1932-7-9 10295 Shasta Burney Spring. 1433 Comment
  RSA80327  Orthocarpus imbricatus F. W. Peirson 1932-7-11 10215 Shasta Thousand Lake Basin. The interlake region. 1951 Comment
  RSA82340  Scutellaria californica F. W. Peirson 1932-7-9 10283 Shasta Burney Spring. 1433 Comment
  RSA85746  Potentilla flabellifolia F. W. Peirson 1932-7-15 10167 Shasta Wet margin of lake of lake on west slope of Mt. Magee, Thousand-Lake Basin 2195 Comment
  RSA87231  Lupinus lyallii var. lyallii F. W. Peirson 1932-7-11 10174 Shasta Forest floor of the interlake region. Thousand-lake Basin, Shasta Co. 1951 Comment
  RSA91054  Carex multicostata F. W. Peirson 1932-7-12 10110 Shasta Thousand-Lake Basin. 1951 Comment
  RSA91384  Hesperolinon micranthum F. W. Peirson 1932-7-8 10264 Shasta Hill Crest Au to Camp on the Redding to Burney Road. 1006 Comment
  RSA91648  Carex vesicaria F. W. Peirson 1932-7-10 10116 Shasta Margin of Lake Eiler, Thousand-Lake Basin. 1951 Comment
  RSA91693  Bromus orcuttianus F. W. Peirson 1932-7-16 10304 Shasta Burney Spring 1433 Comment
  RSA91734  Achnatherum occidentale subsp. californicum F. W. Peirson 1932-7-13 10104 Shasta Thousand-Lake Basin 1982 Comment
  RSA97464  Perideridia parishii subsp. latifolia F. W. Peirson 1922-7-13 10190 Shasta Big Meadow, Thousand-Lakes Basin 1951 Comment
  SEINET10462946  Campanula prenanthoides Frank W. Peirson 1932-7-17 Peirson 10338 Shasta On edge of marshy field, Wallace Ranch, Goose Valley 914 Comment
  SEINET10972517  Heterocodon rariflorum Frank W. Peirson 1932-7-17 Peirson 10332 Shasta WET PLACES AT BORDER OF MARSHY FIELD, WALLACE R., GOOSE VALLEY Comment
  RSA85539  Cheilanthes gracillima F. W. Peirson 1914-08 1505 Sierra Devils Post Pile Comment
Read comments
Jul 4 2012
  CAS-BOT-BC265198  Eriogonum umbellatum var. nevadense Frank W. Peirson 1923-7-19 3711 Siskiyou Near Bray Comment
  CAS-BOT-BC88077  Thelypodium brachycarpum Frank W. Peirson 1923-7-19 3736 Siskiyou Laird's Landing. Comment
  POM20571  Scutellaria nana F. W. Peirson 1923-7-19 3826 Siskiyou Bray Comment
  UC566809  Pteryxia terebinthina var. californica Frank W. Peirson 1923-7-19 3951 Siskiyou Whitney Cr.foot of Mt Shasta Comment
  CAS-BOT-BC262379  Eriogonum vimineum Frank W. Peirson 1923-7-19 3708 Siskiyou Road crossing of Whiney Creek, west base of Mt. Shasta Comment
  CAS-BOT-BC272494  Eriogonum nudum var. pubiflorum Frank W. Peirson 1923-7-19 4209 Siskiyou Camp on Whitney Creek, Mt. Shasta Comment
  RSA65968  Eriogonum vimineum F. W. Peirson 1923-7-19 3708 Siskiyou Camp on Whitney Creek, Mt. Shasta Comment
  RSA66832  Thelypodium laciniatum F. W. Peirson 1923-7-19 3734 Siskiyou Laird s Landing. Comment
  RSA79764  Penstemon deustus subsp. heterander F. W. Peirson 1923-7-19 3842 Siskiyou Near Bray. Comment
  RSA97287  Pteryxia terebinthina var. californica F. W. Peirson 1923-7-19 3951 Siskiyou Whitney Creek at the foot of Mt. Shasta. Comment
  JEPS8972  Physalis lancifolia Frank W. Peirson 1925-9-26 6447 Solano Suisun Marshes Comment
  POM87099  Physalis lancifolia F. W. Peirson 1925-9-26 6447 Solano Suisun Marshes. Along railroad track. Comment
  RSA70033  Salicornia virginica F. W. Peirson 1925-9-26 6445 Solano Suisun Marshes Comment
  RSA91916  Phragmites australis F. W. Peirson 1925-9-26 6438 Solano Suisun Marshes Comment
  PASA507  Brodiaea laxa Frank W. Peirson 1926-4-1 Sonoma 6 miles south of Cloverdale Comment
  RSA69760  Alisma triviale F. W. Peirson 1925-8-8 6344 Sonoma 5 miles S of Santa Rosa. Comment
  RSA80397  Eryngium aristulatum var. aristulatum F. W. Peirson 1925-8-8 6337 Sonoma 6 miles south of Santa Rosa Comment
  RSA80693  Boisduvalia densiflora F. W. Peirson 1925-8-8 6338 Sonoma Roadside 6 miles south of Santa Rosa Comment
  RSA94406  Artemisia douglasiana F. W. Peirson 1925-8-8 6342 Sonoma Roadside 6 miles south of Santa Rosa Comment
  CAS-BOT-BC328185  Pseudobahia peirsonii Frank W. Peirson 1925-3-20 5550 Tulare between Richgrove and Ducor, Comment
  CAS-BOT-BC42028  Draba albertina Frank W. Peirson 1908-7-23 653 Tulare Sierra Nevada. Sequoia National Park. Comment
  JEPS18805  Blennosperma nanum var. nanum Frank W. Peirson 1925-3-21 5581 Tulare near Lindsay; Lewis Creek 243 Comment
  JEPS36879  Stephanomeria tenuifolia F. W. Peirson 1919-8-8 1473 Tulare Crabtree Creek, 500 ft above Crabtree Meadow Sierra Nevada 3352 Comment
  JEPS9047  Mimulus geniculatus Frank W. Peirson 1925-3-21 5561 Tulare near Lindsay; Lewis Creek 213 Comment
  RSA65711  Silene aperta F. W. Peirson 1908-7-23 613 Tulare Hockett Meadow region, Sequoia Nat l Park 2622 Comment
  RSA66693  Dicentra nevadensis F. W. Peirson 1919-8-17 1894 Tulare Pattee Meadow Comment
  RSA68617  Calochortus leichtlinii Frank W. Peirson 1908-7-13 s.n. Tulare Volcano Creek, Sierra Nevada Comment
  RSA69847  Platanthera leucostachys Frank W. Peirson 1908-7-12 1703 Tulare Little Kern River at crossing of the trail from Nelson. 1753 Comment
  RSA70230  Allium validum F. W. Peirson 1908-7-24 1654 Tulare South Fork of Kaweah River. Comment
  RSA71939  Collomia linearis F. W. Peirson 1911-8-9 4195 Tulare Whitney Meadows, Sierra Nevada 3049 Comment
  RSA72342  Epilobium canum subsp. latifolium F. W. Peirson 1916-8-22 757 Tulare Big Arroyo, Sierra Nevada 2439 Comment
  RSA76002  Nemophila spatulata F. W. Peirson 1911-8-9 980 Tulare Whitney Meadows, Sierra Nevada. 2973 Comment
  RSA80232  Penstemon grinnellii subsp. scrophularioides F. W. Peirson 1908-7-11 1113 Tulare Lower Kern Lake. 1860 Comment
  RSA80485  Mimulus tilingii F. W. Peirson 1908-7-17 1141 Tulare Rock Creek, Kern River tributary, Sierra Nevada. Comment
  RSA85789  Potentilla breweri var. breweri F. W. Peirson 1908-07 s.n. Tulare Sequoia National Park, Sierra Nevada. Comment
  RSA87199  Lupinus albifrons var. albifrons F. W. Peirson 1925-3-22 5612 Tulare Middle Fork of Tule River, Sierra Nevada. 457 Comment
  RSA87236  Lupinus culbertsonii subsp. hypolasius F. W. Peirson 1908-7-13 527 Tulare Volcano Creek, Sierra Nevada. Comment
  UCR136647  Triphysaria eriantha F. W. Peirson 1925-3-21 5569 Tulare Sierra Nevada Foothills, Lewis Creek, near Lindsay 213 Comment
  CAS-BOT-BC417028  Sedella pumila F. W. Peirson 1925-3-21 5575 Tulare Near summit of rocky ridge, Lewis Creek near Lindsay 213 Comment
  PASA2578  Tillaea erecta Frank W. Peirson 1925-3-21 5553 Tulare Lewis Creek near Lindsay Comment
  RSA0012674  Senecio scorzonella F. W. Peirson 1916-8-25 1442 Tulare Silver Lake, Little Kern River tributary, Sierra Nevada. 3201 Comment
  RSA100331  Campanula prenanthoides F. W. Peirson 1908-1 1207 Tulare North fork or Tule River, Sierra Nevada. Comment
  RSA58712  Botrychium minganense F. W. Peirson 1950-7-24 15333 Tulare Ridge between forks of Monache Creek, SW of Olancha Peak, southern Sierra Nevada. 3140 Comment
  RSA65223  Eriogonum angulosum F. W. Peirson 1916-8-29 1726 Tulare McCoy's Ranch near Porterville 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
  RSA66054  Tropidocarpum gracile F. W. Peirson 1925-3-21 5562 Tulare Lewis Creek, near Lindsay. 213 Comment
  RSA67375  Guillenia lasiophylla F. W. Peirson 1925-3-21 5564 Tulare Lewis Creek, near Lindsay. 213 Comment
  RSA68619  Calochortus venustus Frank W. Peirson 1911-6-26 1662 Tulare Hume Comment
  RSA69425  Frasera tubulosa F. W. Peirson 1908-7-12 875 a Tulare Lower Kern Lake, southern Sierra Nevada Comment
  RSA70368  Calochortus minimus Frank W. Peirson 1908-7-24 1664 Tulare North Fork of Tule River, Sierra Nevada. Comment
  RSA70371  Calochortus luteus Frank W. Peirson s.n. Tulare Tule River, Sierra Nevada. Comment
  RSA71118  Calystegia malacophylla F. W. Peirson 1919-8-15 895 Tulare Trail from Redwood Meadow to Giant Forest, Sierra Nevada Comment
  RSA79474  Collinsia tinctoria F. W. Peirson 1908-7-8 1104 Tulare Tule River. Comment
  RSA80139  Mimulus guttatus F. W. Peirson 1925-3-22 5626 Tulare Middle Fork of Tule River. 610 Comment
  RSA80641  Hypericum androsaemum F. W. Peirson 1908-7-9 2070 Tulare Tule River Comment
  RSA82053  Cordylanthus rigidus subsp. rigidus F. W. Peirson 1908-7-9 1159 Tulare Tule River Comment
  RSA82529  Verbascum thapsus F. W. Peirson 1916-8-12 1098 Tulare Tule River not far below Nelson. Sierra Nevada. Comment
  RSA84525  Jamesia americana var. rosea F. W. Peirson 1911-8-5 s.n. Tulare Lady Franklin Pass Comment
  RSA85211  Horkelia tridentata F. W. Peirson 1908-7-23 1964 Tulare Sequoia National Park, Sierra Nevada Comment
  RSA85273  Ceanothus velutinus F. W. Peirson 1919-8-9 739 Tulare Jct Meadows, Sierra Nevada. 2500 Comment
  RSA85944  Aphanes occidentalis F. W. Peirson 1925-3-21 5593 Tulare hill slope, Lewis Creek near Lindsay. 290 Comment
  RSA91733  Achnatherum occidentale subsp. occidentale F. W. Peirson 1916-8-25 1584 Tulare Silver Lake, Little Kern River tributary, Sierra Nevada. 3201 Comment
  RSA91974  Elymus elymoides F. W. Peirson 1916-8-25 1608 Tulare Silver Lake, Little Kern Tributary, Sierra Nevada 3201 Comment
  RSA92885  Populus fremontii subsp. fremontii F. W. Peirson 1925-3-21 5599 Tulare Lewis Creek near Lindsay. 274 Comment
  RSA93846  Aster alpigenus F. W. Peirson 1919-8-8 1276 -a Tulare Twin Lake Cirque, Mt. Whitney region, Sierra Nevada. 3506 Comment
  RSA93857  Chrysothamnus parryi subsp. vulcanicus F. W. Peirson 1916-8-11 1251 Tulare Tule River, Sierra Nevada Comment
  RSA93859  Chrysothamnus parryi subsp. vulcanicus F. W. Peirson 1916-8-14 1249 Tulare Trout Meadows, Sierra Nevada. 1829 Comment
  RSA93968  Pyrrocoma apargioides F. W. Peirson 1908-7-13 1236 Tulare Volcano Creek, Sierra Nevada. Comment
  RSA94401  Orochaenactis thysanocarpha F. W. Peirson 1916-8-14 1394 Tulare Lloyds Meadow. 1677 Comment
  RSA94841  Senecio triangularis F. W. Peirson 1908-7-19 1444 Tulare Junction Meadow, Kern River Canyon, Sierra Nevada. 2439 Comment
  RSA95293  Rhamnus ilicifolia F. W. Peirson 1925-3-22 5610 Tulare Middle Fork Tule River 457 Comment
  RSA66125  Draba lemmonii F. W. Peirson 1927-8-3 7636 Tuolumne West slope of Mt Dana. 3659 Comment
  RSA80109  Mimulus nanus var. mephiticus F. W. Peirson 1932-7-24 10397 Tuolumne Slopes above Relief Reservoir, Stanislaus River region, Sierra Nevada. 2287 Comment
  RSA83980  Saxifraga aprica F. W. Peirson 1910-1 s.n. Tuolumne Tuolumne Meadows. Sierra Nevada. Comment
  RSA86300  Ivesia lycopodioides subsp. lycopodioides F. W. Peirson 1927-8-3 7632 Tuolumne west slope of Mt. Dana, Sierra Nevada. 3659 Comment
  RSA66335  Polygonum kelloggii F. W. Peirson 1927-8-4 7637 Tuolumne Lower Tuolumne Meadows, Tuolumne County, alt 8400ft 2561 Comment
  RSA69330B  Rhododendron occidentale var. californicum F. W. Peirson 843 Tuolumne Yosemite, Sierra Nevada Comment
  RSA70252  Allium obtusum var. obtusum Gertrude B. Peirson 1914-07 1650 Tuolumne Tuolumne Meadow region, Sierra Nevada. Comment
  RSA71909  Navarretia capillaris F. W. Peirson 1932-7-25 10406 Tuolumne Sonora Road along the Stanislaus River 1829 Comment
  RSA83448  Mentha X piperita F. W. Peirson 1932-8-14 10410 Tuolumne Near Jamestown Comment
  RSA90622  Ericameria bloomeri F. W. Peirson 1930-8-14 9211 Tuolumne Northeast of Soda Spring, Tuolumne Meadows. 2683 Comment
  RSA92147  Bulbostylis capillaris F. W. Peirson 1932-7-25 10405 Tuolumne Sonora Road along the Stanislaus River 1829 Comment
  RSA94152  Hulsea brevifolia F. W. Peirson 1910-1 1402 Tuolumne Sierra Nevada in region of Yosemite National Park Comment
  RSA94894  Arnica mollis F. W. Peirson 1927-8-3 7620 Tuolumne West slope of Mt. Dana, Sierra Nevada. 3110 Comment
  RSA95169  Hieracium gracile F. W. Peirson 1927-8-1 7611 Tuolumne Woods on S side of Tuolumne Meadows. 2622 Comment
  CAS-BOT-BC39709  Descurainia Frank W. Peirson 1921-3-23 2592 Unknown Colorado Desert. Deep Canyon. 335 Comment
  GH367767  Epilobium canum F. W. Peirson 1918-10-21 280 Unknown West Fork San Gabriel River Comment
  GH367769  Epilobium canum F. W. Peirson 1918-10-15 279 Unknown Foot of Echo Mt. trail. San Gabriel Mts. 548 Comment
  GH386573  Brickellia microphylla F. W. Peirson 1920-9-15 2279 Unknown Lytle Creek Canyon, San Bernardino Mts. Comment
  GH404013  Cryptantha humilis F. W. Peirson 1929-7-20 8508 Unknown Green Lake Valley, Bishop Creek Region 3291 Comment
  GH424186  Scirpus clementis F. W. Peirson 1934-7-27 11300 Unknown Heart Lake Meadow, Rock Creek Lake Basin 3215 Comment
  GH424871  Cryptantha glomeriflora F. W. Peirson 1935-7-16 Unknown Rock Creek Lake Basin, near Heart Lake Meadow Comment
  GH443060  Malacothrix similis F. W. Peirson 1925-5-19 5772 Unknown Hueneme Comment
  GH404014  Cryptantha humilis F. W. Peirson 1930-8-9 9153 Unknown Rock Creek Lake Basin, glacial ridge east of Heart Lake Comment
Read comments
Nov 24 2015
  GH424181  Scirpus clementis F. W. Peirson 1937-8-3 Unknown Rocky Creek Lake Basin, Shores of Chickenfoot Lake 3291 Comment
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Jan 12 2017
  RSA65942  Polygonum shastense F. W. Peirson 1910-7-29 1795 Unknown High pass betw Matterhorn Creek and Smerberg Lake, Sierra Nevada. [no county specified] Comment
  RSA73324  Clarkia williamsonii F. W. Peirson 1910-1 s.n. Unknown Sierra Nevada. Comment
  RSA77737  Viola bakeri F. W. Peirson 1926-6-22 6819 Unknown Trail from Devil's Kitchen, Lassen National Park. Comment
  RSA77770  Viola glabella F. W. Peirson 1926-6-22 6818 Unknown Trail from Devil's Kitchen, Lassen National Park. Comment
  RSA83991  Saxifraga odontoloma F. W. Peirson 1911-7-29 1943 Unknown Summit Meadow. Sierra Nevada. Comment
Read comments
Dec 18 2015
  SEINET12886161 Image available Salix nivalis F. W. Peirson 1934-1 11207 Unknown Comment
  CAS-BOT-BC225447  Gilia leptantha subsp. pinetorum Frank W. Peirson 1923-6-11 3580 Ventura Mt. Pinos 2316 Comment
  CAS-BOT-BC256231  Eriogonum deflexum var. baratum Frank W. Peirson 1922-7-29 3219 Ventura Old mine near Seymour Creek, Mt. Pinos 1798 Comment
  PASA1096  Lotus leucophyllus Frank W. Peirson 1922-7-29 Ventura Seymour Creek, Mt. Pinos Region 1950 Comment
  POM13693  Arceuthobium divaricatum F. W. Peirson 1922-7-29 3251 Ventura Seymour Creek, Mt. Pinos. 1829 Comment
  RSA69683  Mentzelia montana F. W. Peirson 1922-7-29 3229 Ventura Seymour Creek, Mt. Pinos 1951 Comment
  RSA70245  Allium howellii var. clokeyi F. W. Peirson 1923-6-10 3598 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA84459  Clematis ligusticifolia F. W. Peirson 1922-7-30 s.n. Ventura Seymour Creek, Mt. Pinos 1829 Comment
  UC912511  Verbesina encelioides subsp. exauriculata Frank W. Peirson 1925-12-19 2217 Ventura e of Saticoy Comment
  JEPS62729  Salvia leucophylla Frank W. Peirson 1925-4-19 5769 Ventura Sespe Canyon 228 Comment
  RSA0016272  Gilia ochroleuca subsp. bizonata F. W. Peirson 1922-7-30 9325 Ventura Mt. Pinos 2439 Comment
  RSA51464A  Scirpus microcarpus F. W. Peirson 1922-7-30 3228 Ventura South Fork of Seymour Creek Cienega, Mt. Pinos. 1951 Comment
  RSA70267  Juncus macrandrus F. W. Peirson 1922-7-30 4262 Ventura Seymour Creek, Mt. Pinos. 1951 Comment
  RSA71835  Gilia leptantha subsp. pinetorum F. W. Peirson 1923-6-11 3580 Ventura Mt. Pinos 2317 Comment
  RSA72004  Phlox diffusa subsp. subcarinata F. W. Peirson 1923-7-11 3563 Ventura Mt. Pinos. 2652 Comment
  RSA75523  Phacelia fremontii F. W. Peirson 1923-6-10 3556 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA80687  Reseda alba F. W. Peirson 1925-3-27 5725 Ventura Roadside east of Ventura. Comment
  RSA82434  Salvia leucophylla F. W. Peirson 1925-4-19 5769 Ventura Sespe Creek 229 Comment
  RSA86866  Prunus ilicifolia F. W. Peirson 1925-4-18 5766 Ventura Sespe Creek. 305 Comment
  RSA87317  Galium bifolium F. W. Peirson 1923-6-11 3564 Ventura Mt. Pinos. 2561 Comment
  RSA91843  Sporobolus airoides F. W. Peirson 1918-5-5 1588 Ventura Roadside W of Simi Comment
  RSA93177  Machaeranthera canescens F. W. Peirson 1922-7-30 3226 Ventura Mt. Pinos 2439 Comment
  RSA95246  Microseris lindleyi F. W. Peirson 1923-6-10 3586 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA97416  Tauschia parishii F. W. Peirson 1923-6-10 3578 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  SD87542  Navarretia capillaris F. W. Peirson 1922-7-30 3224 Ventura Mt. Pinos, dry stream depressions and about cienegas 2316 Comment
  UC555382  Lotus procumbens var. procumbens Frank W. Peirson 1923-6-11 Ventura South Fork Seymour Creek Mt. Pinos Region 1905 Comment



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