Search Results — 2000 specimen records retrieved (1047 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
  RSA100203  Lonicera involucrata var. ledebourii F. W. Peirson 1926-3-13 6523 Alameda Strawberry Canyon, Berkeley. Comment
  RSA65612  Stellaria media F. W. Peirson 1925-9-20 6432 Alameda Hills back of Oakland. Comment
  RSA70310  Juncus xiphioides F. W. Peirson 1925-10-11 6465 Alameda Berkeley Hills. Comment
  RSA72649  Wyethia angustifolia Mabel Peirson 1912-07 1325 Alameda Berkeley Hills Comment
  CAS-BOT-BC145549  Briza minor Mabel B. Peirson 1926-4-10 6632 Alameda El Cerrito Hill, west slope. Comment
  RSA114699  Lomatium ciliolatum F. W. Peirson 1926-4-10 6627 Alameda Summit of El Cerrito Hill Comment
Read comments
Feb 6 2013
  RSA77182  Modiola caroliniana F. W. Peirson 1925-10-30 6470 Alameda Southeast part of Campus, Berkeley. Comment
  RSA79422A  Collinsia bartsiifolia var. davidsonii F. W. Peirson 1926-4-4 7089 Alameda Berkeley Hills, Crgmont Region Comment
  RSA90930  Trifolium microdon F. W. Peirson, Mabel B. Peirson 1926-4-10 6630 Alameda West slope of El Cerrito Comment
  RSA94424  Chrysanthemum segetum F. W. Peirson, Mabel Peirson 1926-4-10 6634 Alameda Field ner Bay at south base of El Cerrito Hill Comment
  SD87862  Epilobium densiflorum Frank W. Peirson 1925-9-20 6437 Alameda Hills back of Oakland, Moraga Road, Comment
  CAS-BOT-BC139780  Ivesia gordonii Frank W. Peirson 1939-8-11 12820 Alpine Woods Lake Region, north slopes of Round Top 2895 Comment
  CAS-BOT-BC28174  Carex hoodii Frank W. Peirson 1935-7-24 11710 Alpine Lake Alpine. Comment
  POM212505  Cerastium beeringianum F. W. Peirson 1935-7-30 11831 Alpine Woods Lake Region; at the north base of Roundtop. 2866 Comment
  RSA423133  Eriogonum incanum F. W. Peirson 1935-7-29 11626 Alpine Woods Lake Region. Along trail in open country southeastward from lake. 2744 Comment
  RSA65522  Cerastium beeringianum F. W. Peirson 1937-7-25 12120 Alpine Just W of Fourth of July Lake; Woods Lake Region; Sierra Nevada. 2896 Comment
  RSA66216  Arabis lyallii F. W. Peirson 1939-8-11 12825 Alpine Near Round Top Lake, Woods Lake Region 2896 Comment
  RSA87120  Agrostis pallens F. W. Peirson 1931-8-7 9526 Alpine above Grass Lake. Glen Alpine Creek Basin 2287 Comment
  RSA87410  Elymus sierrae F. W. Peirson 1939-8-11 12827 Alpine Woods Lake Region. North slope of Round Top. 2957 Comment
  SBBG54419  Trisetum spicatum F. W. Peirson 1957-7-24 Alpine Winnemucca Lake, Woods Lake region 2743 Comment
  SD87525  Carex davyi Frank W. Peirson 1935-7-26 11714 Alpine Hermit Valley; mountain slope south of the Mukelumne River. 2438 Comment
  SD87539  Eriogonum rosense var. rosense Frank W. Peirson 1935-7-29 11630 Alpine Woods Lake Region, open rocky summit of Elephants Back 2926 Comment
  SD87759  Carex davyi Frank W. Peirson 1937-7-24 12203 Alpine Shores of Winnemuca Lake; Woods Lake Region. 2743 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
  UC570548  Allium campanulatum Frank W. Peirson 1935-7-25 11589 Alpine summit of ridge about 2 mi n Lake Alpine; Lake Alpine Region 2560 Comment
  UC570552  Stenotus acaulis Frank W. Peirson 1935-7-26 11598 Alpine Hermit Valley, Sandy flat at summit of a divide south of the Mokelumne River. 2590 Comment
  UC640216  Chaenactis douglasii var. douglasii Frank W. Peirson 1939-8-12 12837 Alpine Frog Lake Woods Lake Region, Frog Lake 2712 Comment
  UC640224  Navarretia capillaris Frank W. Peirson 1939-8-14 12863 Alpine East Fork , East Fork (Woods Lake Region) 2621 Comment
  UC640250  Orthocarpus cuspidatus subsp. cryptanthus Frank W. Peirson 1939-8-12 12836 Alpine slopes about Frog Lake (Woods Lake Region); , slopes about Frog Lake 2712 Comment
  UC640253  Purshia tridentata var. tridentata Frank W. Peirson 1939-8-11 12819 Alpine Woods Lake Region; on the plateau 2773 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-BC20182  Carex filifolia var. erostrata Frank W. Peirson 1937-7-25 12204 Alpine Woods Lake Region. Near Fourth of July Lake. 2895 Comment
  CAS-BOT-BC20613  Carex douglasii Frank W. Peirson 1935-7-28 11719 Alpine Red Lake. Foot of lake. 2407 Comment
  CAS-BOT-BC22080  Carex heteroneura Frank W. Peirson 1937-7-25 12205 Alpine Woods Lake Region. Near Fourth of July Lake. 2895 Comment
  CAS-BOT-BC31567  Carex luzulifolia Frank W. Peirson 1937-7-25 13564 Alpine Trail to Winnemucca, Woods Lake. 2682 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
  POM257497  Carex straminiformis F. W. Peirson 1937-7-25 s.n. Alpine Small moraine immediately south of Fourth of July Lake, Woods Lake Region, Sierra Nevada 2896 Comment
  RSA0010735  Senecio scorzonella F. W. Peirson 1939-8-9 12792 Alpine in Woods Lake Region, Sierra Nevada Comment
  RSA0070605  Cirsium canovirens F. W. Peirson 1935-7-29 11628 Alpine Summit of Elephants Back, Woods Lake Region, Sierra Nevada. 2927 Comment
  RSA65855  Polygonum minimum F. W. Peirson 1939-8-12 12845 Alpine Woods Lake region; southward from Carson Pass. 2622 Comment
  RSA66331  Polygonum davisiae F. W. Peirson 1935-7-28 11613 Alpine Lake margin at embankment at foot of Red Lake. 2409 Comment
  RSA71892A  Navarretia leptalea subsp. bicolor F. W. Peirson 1939-8-13 s.n. Alpine Near Carson Pass, Sierra Nevada. Comment
  RSA72665  Balsamorhiza sagittata F. W. Peirson 1935-7-25 11586 Alpine About 2 miles north of lake; Lake Alpine Region 2530 Comment
  RSA79625  Cryptantha echinella F. W. Peirson 1935-7-28 11611 Alpine along margin of Red Lake 2409 Comment
  RSA80855  Orthocarpus cuspidatus subsp. copelandii F. W. Peirson 1939-8-12 12836 Alpine About Frog Lake, Woods Lake Region, Sierra Nevada 2713 Comment
  RSA82252  Castilleja miniata F. W. Peirson 1935-7-29 11621 Alpine Near foot of Elephant Rock, Woods Lake Region. 2820 Comment
  RSA84258  Parnassia palustris var. californica F. W. Peirson 1939-8-11 s.n. Alpine On northeast slope of Round Top, Woods Lake Region 2820 Comment
  RSA84377  Lithophragma glabrum F. W. Peirson 1935-7-29 11625 Alpine Not far from W base of Elephant s Back. Woods Lake Region. 2820 Comment
  RSA87187  Lupinus angustiflorus F. W. Peirson 1935-7-28 11617 Alpine At foot of Red Lake. 2409 Comment
  RSA87402  Lupinus lyallii var. lyallii F. W. Peirson 1939-8-9 12789 Alpine Roundtop, Woods Lake Regions. 2546 Comment
  RSA87424  Lupinus polyphyllus subsp. superbus F. W. Peirson 1937-7-23 12103 Alpine Southwest of Woods Lake. 2805 Comment
  RSA88740  Carex heteroneura F. W. Peirson 1935-7-24 11711 Alpine Near foot of Lake Alpine. 2226 Comment
  RSA90770  Astragalus whitneyi F. W. Peirson s.n. Alpine Frog Lake, Woods Lake Region. 2713 Comment
  RSA90773  Astragalus whitneyi F. W. Peirson 1935-7-27 11603 Alpine Region south of Ebbets Pass. 2805 Comment
  RSA90982  Erigeron breweri F. W. Peirson 1939-8-10 12803 Alpine North shore of Winnemucca Lake, Woods Lake Region, Sierra Nevada 2744 Comment
  RSA91184  Lupinus arbustus subsp. silvicola F. W. Peirson 1935-7-25 11579 Alpine Lake Alpine Region. 2439 Comment
  RSA91586  Luzula comosa F. W. Peirson 1935-7-29 11721 a Alpine Near Woods Lake. 2561 Comment
  RSA92666  Eriophyllum lanatum var. integrifolium F. W. Peirson 1939-8-10 12806 Alpine Above Winnemucca Lake, Sierra Nevada 2805 Comment
  RSA93964  Ericameria suffruticosa F. W. Peirson 1939-8-10 12809 Alpine Above Winnemucca Lake, Woods Lake Region, Sierra Nevada 2744 Comment
  RSA94502  Arnica cordifolia F. W. Peirson 1939-8-14 12862 Alpine On ridge between the East Fork and Woods lake 2652 Comment
  RSA97158  Lomatium dissectum var. multifidum F. W. Peirson 1935-7-24 11569 Alpine North of Lake Alpine, Sierra Nevada 2287 Comment
  RSA77695  Ceanothus prostratus F. W. Peirson 1926-6-21 6780 Butte Butte Meadow, Humboldt Road Comment
  RSA69248  Hastingsia alba Frank W. Peirson 1926-6-21 6776 Butte Butte Meadow, Humboldt Road. Comment
  RSA70149  Triteleia hyacinthina F. W. Peirson 1926-6-21 6777 Butte Butte Meadow, Humboldt Road. Comment
  RSA70165  Brodiaea purdyi F. W. Peirson 1926-6-21 6767 Butte Butte Meadow, Humboldt Road. Comment
  RSA92160  Scirpus diffusus F. W. Peirson 1926-6-21 6769 Butte Butte Meadow, Humboldt Road. Comment
  CAS-BOT-BC208862  Lupinus breweri var. breweri Frank W. Peirson 1935-7-23 11549 Calaveras Big Meadow, N. Fork Stanislaus River Region 1981 Comment
  UC570559  Navarretia leptalea subsp. leptalea Frank W. Peirson 1935-7-23 11543 Calaveras Big Meadow N Fork Stanislaus River Region, Big Meadow 1981 Comment
  RSA83333  Lepechinia calycina F. W. Peirson 1923-7-1 3832 Contra Costa Mt. Diablo Comment
  POM20615  Pediomelum californicum F. W. Peirson 1923-7-1 3618 Contra Costa Contra Costa County: summit of mt Diablo Comment
  RSA72631  Wyethia helenioides F. W. Peirson 1926-8-10 6626 Contra Costa Tunnel Road to Walnut Creek. Comment
  RSA68716  Lilium maritimum Frank W. Peirson 1923-7-13 3690 Del Norte 4 miles northeast of Gasquet Comment
  RSA81453  Castilleja miniata subsp. elata F. W. Peirson 1923-7-12 3852 Del Norte 10 miles northeast of Cresent City Comment
  RSA87154  Quercus vacciniifolia F. W. Peirson 1923-7-13 3702 Del Norte 7 miles north of Gasquet. Comment
  RSA69247  Hastingsia serpentinicola Frank W. Peirson 1941-7-28 13103 Del Norte 10 miles below Patricks Creek Camp. Comment
  RSA97135  Lomatium howellii F. W. Peirson 1923-7-13 3948 Del Norte 4 miles northeast of Gasquet Comment
  CAS-BOT-BC375003  Stenotus acaulis Frank W. Peirson 1925-7-5 6273 El Dorado Mt. Talac [Tallac] 2590 Comment
  JEPS38044  Chrysolepis sempervirens Frank W. Peirson 1925-7-4 6264 El Dorado Fallen Leaf Lake Comment
  POM175495  Symphoricarpos acutus F. W. Peirson 1925-7-6 6288 El Dorado Trail from Fallen Leaf Lake to Angora Lookout, region of Lake Tahoe, Sierra Nevada. 2287 Comment
  RSA65028  Silene occidentalis F. W. Peirson 1925-7-4 6256 El Dorado Wood road east shore of Fallen Leaf lake. Comment
  RSA65112  Eriogonum marifolium F. W. Peirson 1925-7-6 6293 El Dorado 1/4 mile above Fallen Leaf Camp, Sierra Nevada. 1982 Comment
  RSA66063  Rorippa subumbellata F. W. Peirson 1925-7-1 6187 El Dorado Lake Tahoe, at State Line 1921 Comment
  RSA69259  Kalmia polifolia subsp. microphylla F. W. Peirson 1925-7-3 6250 El Dorado Susie Lake, Glen Alpine Creek Basin, Sierra Nevada. Comment
  RSA70569  Vaccinium cespitosum F. W. Peirson 1925-7-3 6239 El Dorado Glen Alpine Creek Basin, Sierra Navada. 2363 Comment
  RSA70827  Arctostaphylos nevadensis F. W. Peirson 1931-8-7 9518 El Dorado Near stream course above Grass Lake, Glen Alpine Creek Basin. 2256 Comment
  RSA74829  Phacelia hydrophylloides F. W. Peirson 1925-7-3 6232 El Dorado Glen Alpine Creek Basin, Sierra Nevada. 2287 Comment
  RSA84845  Ribes cereum F. W. Peirson 1925-7-5 6281 El Dorado Mt. Tallac. Comment
  SD87690  Lonicera conjugialis Frank W. Peirson 1935-7-3 6242 El Dorado Glen Alpine Creek Basin 2190 Comment
  SEINET180137 Image available Muhlenbergia richardsonis Frank W. Peirson 1935-8-2 El Dorado State Line Lake Tahoe. 1905 Comment
  UC501508  Fragaria virginiana subsp. platypetala Frank W. Peirson 1925-7-4 6266 El Dorado road along e shore Fallen Leaf Lake 1950 Comment
  UC635371  Epilobium oregonense Frank W. Peirson 1925-7-1 6197 El Dorado State Line Lake Tahoe (meadow) 1920 Comment
  UCD86684  Muhlenbergia filiformis F. W. Peirson 1925-7-2 6215 El Dorado Along big marsh on south side of Lake Tahoe. 1905 Comment
  CAS-BOT-BC231315  Polemonium pulcherrimum Frank W. Peirson 1925-7-5 6275 El Dorado Mt. Tallac, from near summit to Plateau 2743 Comment
  CAS-BOT-BC420140  Polygonum ramosissimum subsp. prolificum F. W. Peirson 1925-6-2 6204 El Dorado South side of Lake Tahoe Comment
  LA38959  Mimulus guttatus Frank W. Peirson; 1925-7-7 6303 El Dorado Trail along Echo Lake 2285 Comment
  PASA1902  Gayophytum caesium Frank W. Peirson 1925-7-1 El Dorado Lake Tahoe 1904 Comment
  POM87017  Plagiobothrys torreyi var. diffusus F. W. Peirson 1925-7-1 6179 El Dorado State Line, Lake Tahoe 1905 Comment
  POM87031  Allium campanulatum F. W. Peirson 1925-7-4 6262 El Dorado Road along E shore of Fallen Leaf Lake. 1951 Comment
  POM87061  Arnica nevadensis F. W. Peirson 1925-7-2 6223 El Dorado Glen Alpine Road, Fallen Leaf Lake 2012 Comment
  POM87076  Heterotheca villosa var. minor F. W. Peirson 1925-7-5 6283 El Dorado Near Fallen Leaf Lodge. 1951 Comment
  POM87084  Carex canescens F. W. Peirson 1925-7-2 6226 El Dorado Fallen Leaf Lake. Road to Glen Alpine. 1982 Comment
  POM87168  Arnica parryi subsp. sonnei F. W. Peirson 1925-7-3 6243 El Dorado Glen Alpine Creek Basin. Sierra Nevada. 2134 Comment
  RSA0080499  Claytonia lanceolata F. W. Peirson 1925-7-7 6314 El Dorado Echo Lakes Divide, Sierra Nevada. 2561 Comment
  RSA65045  Silene lemmonii F. W. Peirson 1925-7-2 6217 El Dorado On south side of Lake Tahoe. 1905 Comment
  RSA69379  Thalictrum fendleri F. W. Peirson 1925-7-6 6285 El Dorado 1/4 mile above Fallen Leaf Camp Comment
  RSA69455  Juncus ensifolius F. W. Peirson 1931-8-7 9528 El Dorado Trail to Grass Lake above Glen Alpine, Glen Alpine Creek Basin. 2134 Comment
  RSA69652  Spiranthes romanzoffiana Frank W. Peirson 1937-7-28 12135 El Dorado Back of the Memler property near Richardsons; Lake Tahoe. 1905 Comment
  RSA69788  Gentiana calycosa F. W. Peirson 1931-8-7 9519 El Dorado Near Grass Lake, Glen Alpine Creek Basin. 2226 Comment
  RSA70284  Juncus nevadensis F. W. Peirson 1925-7-1 6199 El Dorado State Line, Lake Tahoe 1905 Comment
  RSA70296  Juncus orthophyllus F. W. Peirson 1931-8-8 9538 El Dorado Marsh near trail to Lake of the Woods; Glen Alpine Creek Basin. 2043 Comment
  RSA72022  Polemonium californicum F. W. Peirson 1925-7-7 6306 El Dorado Trail by upper Echo Lake. 2287 Comment
  RSA72117  Epilobium oregonense F. W. Peirson 1925-7-1 6197 El Dorado State Line, Lake Tahoe. Sierra Nevada. 1905 Comment
  RSA73019  Leptosiphon harknessii F. W. Peirson 1925-7-7 6310 El Dorado Meadow on trail to Upper Echo Lake 2287 Comment
  RSA77834  Hackelia micrantha F. W. Peirson 1925-7-4 6259 El Dorado Road on east shore of Fallen Leaf Lake, Sierra Nevada. 1951 Comment
  RSA79811  Penstemon roezlii F. W. Peirson 1925-7-8 6322 El Dorado Road down American River, Sierra Nevada. Comment
  RSA80039  Veronica scutellata F. W. Peirson 1925-7-1 6183 El Dorado Lake Tahoe, State Line between California and Nevada. 1921 Comment
  RSA80467  Plagiobothrys scouleri var. hispidulus F. W. Peirson 1925-7-1 8651 El Dorado State Line, Lake Tahoe. 1921 Comment
  RSA82112  Utricularia vulgaris subsp. macrorhiza F. W. Peirson 1925-7-2 6212 El Dorado South side of Lake Tahoe. 1898 Comment
  RSA84273  Ranunculus alismifolius var. hartwegii F. W. Peirson 1925-7-3 6252 El Dorado Glen Alpine Creek Basin, Sierra Nevada. 2500 Comment
  RSA84276  Ranunculus alismifolius var. hartwegii F. W. Peirson 1925-7-2 6202 El Dorado South side of Lake Tahoe. 1905 Comment
  RSA85309  Paeonia brownii F. W. Peirson 1925-7-1 6169 El Dorado State Line, Lake Tahoe 1905 Comment
  RSA90881  Carex spectabilis F. W. Peirson 1931-8-8 9535 El Dorado Lake of the Woods trail, Glen Alpine Creek Basin. 2256 Comment
  RSA91649  Carex vesicaria F. W. Peirson 1925-7-2 6213 El Dorado On south side of Lake Tahoe. 1905 Comment
  RSA91957  Glyceria striata F. W. Peirson 1931-8-7 9533 El Dorado Trail to Grass Lake above Glen Alpine. 2134 Comment
  RSA92691  Eriophyllum lanatum var. integrifolium F. W. Peirson 1925-7-8 6495 El Dorado South Fork of American River 1829 Comment
  RSA92843  Madia glomerata F. W. Peirson 1931-8-7 9529 El Dorado Glen Alpine Creek Basin 1982 Comment
  RSA94497  Arnica discoidea Mabel Peirson 1931-8-5 9517 El Dorado Wooded plateau near lake of the Woods on trail from Echo Lake Comment
  CAS-BOT-BC28495  Carex lenticularis var. lipocarpa Frank W. Peirson 1939-8-22 13595 Fresno Jackass Meadow, Florence Lake. 2179 Comment
  CAS-BOT-BC362825  Raillardella scaposa Frank W. Peirson 1921-8-17 1412 Fresno South Fork Kings River 2971 Comment
  JEPS64487  Listera convallarioides Frank W. Peirson 1911-8-1 1699 Fresno Woods Creek Comment
  JEPS66604  Gaultheria humifusa F. W. Peirson 1921-8-13 2530 Fresno Grouse Meadows, Le Carte Canyon Le Carte Canyon; Sierra Nevada, Grouse Meadows, Le Carte Canyon Comment
  RSA65119  Eriogonum incanum F. W. Peirson 1921-8-16 1764 Fresno Cardinal Lake, Sierra Nevada 3537 Comment
  RSA66075  Barbarea orthoceras F. W. Peirson 1919-8-24 1917 Fresno Rae Lake, Sierra Nevada. 3232 Comment
Read comments
Dec 23 2018
  RSA79837  Penstemon azureus subsp. azureus F. W. Peirson 1939-8-22 s.n. Fresno Below dam, Florence Lake. Sierra Nevada 2180 Comment
  RSA82364  Agastache urticifolia F. W. Peirson 1921-8-13 1062 Fresno Le Conte Canyon, Grouse Meadows. 2515 Comment
  RSA84316  Isoetes bolanderi F. W. Peirson 1921-8-15 2544 Fresno Cartridge Creek, Sierra Nevada 3201 Comment
  RSA84976  Potamogeton gramineus F. W. Peirson 1914-8-9 1538 Fresno Florence Lake, Sierra Nevada. Comment
  RSA85038  Reseda alba F. W. Peirson 1939-8-20 12871 Fresno West side of Florence Lake 2226 Comment
  RSA86181  Aspidotis densa F. W. Peirson 1939-8-20 12870 Fresno Abundant along west trail about Florence Lake 2226 Comment
  UC643214  Lupinus stiversii Frank W. Peirson 1940-6-1 12933 Fresno about one mi above Cedar Grove (Canyon of South Fork Kings River); Canyon of South Fork Kings River 1432 Comment
  CAS-BOT-BC98115  Symphyotrichum spathulatum F. W. Peirson 1919-8-4 1267 Fresno Vidette Meadow, Bubbs Creek, Sierra Nevada 2895 Comment
  PASA241  Trifolium monanthum var. tenerum Frank W. Peirson 1919-8-29 Fresno Woods Creek, Sierra Nevada 2529 Comment
  PASA2798  Narthecium californicum F. W. Peirson 1921-8-13 Fresno Grouse Meadows 2514 Comment
  PASA944  Senecio fremontii var. occidentalis Frank W. Peirson 1921-8-12 Fresno Middle fork Kings River 3047 Comment
  RSA0012463  Senecio hydrophilus F. W. Peirson 1939-8-22 12882 Fresno Along bank of the San Joaquin River at Jackass Meadow. 2180 Comment
  RSA0020550  Draba lemmonii var. lemmonii F. W. Peirson 1919-8-5 652 Fresno Center Basin. 3415 Comment
  RSA0029832  Delphinium polycladon F. W. Peirson 1914-8-13 641 Fresno Fish Creek, Sierra Nevada. 1982 Comment
  RSA0081567  Pyrola minor F. W. Peirson 1919-8-4 825 Fresno Vidette Meadow, Bubbs Creek. 2896 Comment
  RSA66066  Rorippa curvisiliqua F. W. Peirson 1919-8-21 1905 Fresno Below Woods Creek, Paradise Valley, South Fork of Kings River. 2027 Comment
  RSA69515  Veratrum californicum Frank W. Peirson 1921-8-17 2539 Fresno South Fork of Kings River; Sierra Nevada. 3125 Comment
  RSA72661  Balsamorhiza deltoidea F. W. Peirson 1941-5-31 13079 Fresno Cedar Grove, Kings River 1402 Comment
  RSA80083  Mimulus whitneyi F. W. Peirson 1911-7-29 1135 Fresno Trail from Hume to Summit Meadow, Sierra Nevada. Comment
  RSA84398  Mitella breweri F. W. Peirson 1921-8-9 2625 Fresno Aspen Meadow. S Fork of the San Joaquin River. Sierra Nevada. 2515 Comment
  RSA85022  Woodsia scopulina F. W. Peirson 1921-8-15 2837 Fresno Taboose Pass, Sierra Nevada 3201 Comment
  RSA85696  Potentilla gracilis var. fastigiata F. W. Peirson 1919-8-18 1976 Fresno Summit Meadow, Sierra Nevada. 2439 Comment
  RSA86634  Geum macrophyllum F. W. Peirson 1911-7-29 1985 Fresno Summit meadow trail from Hume Sierra Nevada. Comment
  RSA90975  Erigeron breweri F. W. Peirson 1921-8-9 2521 Fresno Aspen Meadow. S Fork of the San Joaquin River. Sierra Nevada. 2515 Comment
  RSA91766  Anaphalis margaritacea F. W. Peirson 1921-8-9 2635 Fresno South Fork of the San Joaquin River, Sierra Nevada 2530 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
  RSA94498  Arnica cordifolia F. W. Peirson 1914-8-13 1420 Fresno Fish Creek, San Joaquin Tributary, Sierra Nevada Comment
  RSA95072  Microseris nutans F. W. Peirson 1921-8-9 1465 Fresno Oiute [Piute?] Creek, Sierra Nevada 2896 Comment
  CAS-BOT-BC311079  Heterotheca oregona var. rudis Frank W. Peirson 1926-7-13 7051 Humboldt Mad River, vicinity of Blue Lake Comment
  PASA270  Vicia sativa Frank W. Peirson 1923-7-11 Humboldt 7 miles north of Arcata Comment
  RSA79855  Keckiella corymbosa F. W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec. Comment
  RSA87079  Lupinus vallicola subsp. apricus F. W. Peirson 1923-7-10 4221 Humboldt Garberville Comment
  SD87718  Keckiella corymbosa Frank W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec Comment
  RSA0019464  Cornus sessilis F. W. Peirson 1932-7-7 10262 Humboldt Willow Creek, a few miles above the town of that name. Comment
  RSA0022786  Monardella villosa subsp. subserrata F. W. Peirson 1926-7-13 7050 Humboldt Near Blue Lake, Mad River Comment
  RSA0116953  Camassia quamash subsp. linearis Frank W. Peirson 1923-7-11 3681 Humboldt 7 miles N of Arcata. Comment
  RSA70055  Epipactis gigantea Frank W. Peirson 1923-7-9 3697 Humboldt State Park on Eel River Comment
  RSA85302  Ranunculus repens F. W. Peirson 1926-7-12 12 Humboldt Orick Comment
  RSA91235  Vicia angustifolia F. W. Peirson 1926-7-13 7059 Humboldt Mad River, near Blue Lake Comment
  RSA91480  Schoenoplectus maritimus F. W. Peirson 1923-7-11 3660 Humboldt Flats north of Eureka. Comment
  RSA91828  Calamagrostis bolanderi F. W. Peirson 1941-7-28 13115 Humboldt at Patrick's Point State Park Comment
  RSA93185  Erigeron biolettii F. W. Peirson 1923-7-9 3877 Humboldt Humboldt County State Park Comment
  RSA93319  Heterotheca oregona var. rudis F. W. Peirson 1926-7-13 7051 Humboldt Near Blue Lake, Mad River Comment
  RSA94105  Luina hypoleuca var. californica F. W. Peirson 1926-7-12 7026 Humboldt Humboldt County: Klamath River near Weitchpec Comment
  RSA94123  Brickellia californica F. W. Peirson 1926-7-13 7048 Humboldt Mad River, vicinity of Blue Lake. Comment
  RSA97270  Cornus nuttallii F. W. Peirson 1923-7-9 3956 Humboldt Humboldt County State Park on Eel River, northern California. Comment
  UC1026440  Carex obnupta Frank W. Peirson 1941-7-28 13108 Humboldt Patrick Pt. State Park Comment
  JEPS15014  Loeseliastrum schottii Frank W. Peirson 1927-4-16 7218 Imperial foot of Mountain Springs Grade Comment
  PASA954  Senecio mohavensis Frank W. Peirson 1922-4-13 Imperial Moutain Springs Grade 365 Comment
  POM128743  Polygonum argyrocoleon F. W. Peirson 1927-4-13 7179 Imperial Imperial Valley Blvd., opposite Salton Sea. Comment
  POM128747  Populus fremontii F. W. Peirson 1927-4-15 7203 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  POM128748  Machaeranthera asteroides F. W. Peirson 1927-4-15 7206 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  RSA0006612  Camissonia claviformis subsp. peirsonii F. W. Peirson 1922-4-12 4512 Imperial Twenty-eight miles south [SE] of Coachella -56 Comment
  RSA415438  Astragalus coccineus F. W. Peirson 1922-4-13 2877 Imperial Mountain Springs, western edge of Colorado Desert 792 Comment
  RSA67368  Guillenia lasiophylla F. W. Peirson 1932-3-22 9801 Imperial Midway Well 152 Comment
  RSA69555  Mentzelia hirsutissima var. stenophylla F. W. Peirson 1927-4-16 7209 Imperial Foot of Mountain Springs Grade, Western Imperial County Comment
  RSA72242  Camissonia claviformis subsp. peirsonii F. W. Peirson 1922-4-13 2892 Imperial Mountain Spring Grade. 457 Comment
  RSA74511  Phacelia neglecta F. W. Peirson 1941-4-8 s.n. Imperial 10 miles NW of Ogilby. Comment
  RSA75148  Nemacladus glanduliferus F. W. Peirson 1927-4-16 7219 Imperial Foot of Mountain Springs Grade, Western Imperial County Comment
  RSA77892  Tiquilia plicata F. W. Peirson 1927-4-15 7196 Imperial Sand dunes west of Yuma. Comment
  RSA80148  Mimulus bigelovii var. bigelovii F. W. Peirson 1927-4-16 7211 Imperial Foot of Mountain Springs Grade, Western Imperial County Comment
  RSA85176  Ephedra trifurca F. W. Peirson 1922-3-21 9774 Imperial Near summit of Sand Hills, east of Holtville. Comment
  RSA86977  Calliandra eriophylla F. W. Peirson 1932-3-21 9788 Imperial 6 miles north of Ogilby, eastern Imperial Co. 137 Comment
  RSA86981  Calliandra eriophylla F. W. Peirson 1935-4-16 s.n. Imperial North of Ogilby Comment
  SD87608  Astragalus palmeri F. W. Peirson 1922-4-13 2899 Imperial Mountain Springs Grade, western edge of the Colorado Desert 1064 Comment
  SD87634  Johnstonella holoptera Frank W. Peirson 1935-4-16 11466 Imperial Laguna Dam, in waste disturbed ground, north of the bridge over the canal. (IPB 10/07) Comment
  SD87812  Tiquilia canescens var. pulchella Frank W. Peirson 1935-4-16 11464 Imperial 4-S Pass, eastern Imperial County, a few rods west of pass, in rough rocky terrain. (IPB 10/07) Comment
  UC501479  Chylismia claviformis subsp. yumae Frank W. Peirson 1932-3-21 9768 Imperial 6 mi e Holtville (slightly above sea level) Comment
  RSA0003051  Astragalus peirsonii F. W. Peirson 1927-4-15 7194 Imperial Sand dunes west of Yuma. Comment
  RSA0012626  Senecio mohavensis F. W. Peirson 1922-4-13 4247 Imperial Mountain Springs Grade on road from El Centro to San Diego. 366 Comment
  RSA0121532  Apiastrum angustifolium F. W. Peirson 1927-4-16 7210 Imperial Foot of Mountain Springs Grade (road, San Diego to El Centro). Comment
  RSA0126953  Mentzelia longiloba var. longiloba F. W. Peirson 1927-4-15 7201 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  RSA90765  Astragalus crotalariae F. W. Peirson 1922-4-12 2904 Imperial 30 miles south of Coachella. Comment
Read comments
Oct 8 2011
  RSA91217  Krameria grayi F. W. Peirson 1932-3-21 9785 Imperial 3 mi. north of Ogilby. 122 Comment
  RSA91428  Marina parryi F. W. Peirson 1932-3-22 9802 Imperial Midway Well 152 Comment
  RSA91541  Dasyochloa pulchella F. W. Peirson 1922-4-13 4330 Imperial Foot of Mountain Springs Grade, w. Imperial County. Comment
  CAS-BOT-BC109322  Rumex paucifolius Frank W. Peirson 1933-8-19 s.n. Inyo Top of Escarpment near Heart Lake. Rock Creek Lake Basin. 3291 Comment
  CAS-BOT-BC115358  Carex utriculata Frank Warrington Peirson 1930-8-1 9074 Inyo Heart Lake, Rock Creek Lake Basin. Comment
  CAS-BOT-BC118818  Carex preslii Frank Warrington Peirson 1940-8-17 13022 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3230 Comment
  CAS-BOT-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-BC202117  Lupinus magnificus var. magnificus Frank W. Peirson 1932-5-8 9936 Inyo Wild Rose [Wildrose] Canyon, Panamint Mts. 1828 Comment
  CAS-BOT-BC218399  Comastoma tenellum Frank W. Peirson 1933-8-22 s.n. Inyo Upper part of Heart Lake Meadow, Rock Creek Lake Basin 3230 Comment
  CAS-BOT-BC22194  Carex helleri Frank W. Peirson 1930-8-5 9093 Inyo Summit of Mono Pass, Rock Creek Lake Basin, Sierra Nevada. 3657 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-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-BC258628  Eriogonum ovalifolium var. nivale Frank W. Peirson 1933-8-9 s.n. Inyo Rock Creek Lake Basin 3474 Comment
  CAS-BOT-BC300110  Erigeron pumilus var. intermedius F. W. Peirson 1921-8-18 2760 Inyo Taboose Pass 3200 Comment
  CAS-BOT-BC318400  Packera cana Frank Warrington Peirson 1939-8-5 s.n. Inyo Rock Creek Lake Basin, Along the foot of the escarpment at Heart Lake 3230 Comment
  CAS-BOT-BC34113  Carex breweri Frank W. Peirson 1934-7-22 s.n. Inyo Rock Creek Lake Basin. Above the Upper Glacial Lake. 3383 Comment
  CAS-BOT-BC34310  Carex congdonii Frank W. Peirson 1933-8-8 10835 Inyo Rock Creek Lake Basin. Slope west of Heart Lake. 3383 Comment
  CAS-BOT-BC391999  Anemone tuberosa Frank W. Peirson 1932-5-7 9910 Inyo North Fork Hanaupah Canyon, Panamint Mts. 2133 Comment
  CAS-BOT-BC41864  Draba breweri Frank W. Peirson 1929-7-22 8532 Inyo Bishop Creek Region. Trail southward from Long Lake. 3413 Comment
  JEPS20065  Eriogonum rosense Frank W. Peirson 1929-7-24 8548 Inyo along summit, Inconsolable Range Inconsolable Range 3657 Comment
  JEPS3782  Castilleja peirsonii Frank W. Peirson 1935-7-17 11663 Inyo Near Morgan Pass lakes; Rock Creek Lake Basin 3322 Comment
  JEPS65565  Oxytropis borealis var. australis Frank W. Peirson circa 1918 10 Inyo at Green Lake Sierra Nevada, Bishop Creek region, at Green Lake (Bishop Creek region, Sierra Nevada) Comment
  JEPS67182  Luzula orestera Frank W. Peirson 1933-8-4 Inyo meadows s Long Lake; Rock Creek Lake Basin, meadow s of Long Lake 3291 Comment
  POM171911  Carex congdonii F. W. Peirson 1930-8-5 9106 Inyo Rock Creek Lake Basin, Trail to Mono Pass 3596 Comment
  POM203748  Saxifraga rivularis Mabel Peirson 1934-7-29 s.n. Inyo Rock Creek Lake Basin. Above Ruby Lake. 3506 Comment
  POM203755  Ribes inerme F. W. Peirson 1934-7-20 11271 Inyo At Ruby Falls, Rock Creek Lake Basin, northern Inyo County. 3323 Comment
  POM254401  Mimulus breweri F. W. Peirson 1940-8-10 12953 Inyo Shore of Ruby Lake near its outlet: Rock Creek Lake Basin, northern Inyo County. 3399 Comment
  POM256929  Achnatherum occidentale subsp. occidentale F. W. Peirson 1940-8-6 12940 Inyo Rock Creek Lake Basin 3323 Comment
  RSA0126013  Arabis dispar F. W. Peirson 1932-5-7 9918 Inyo North fork of Hanaupah Canyon, Panamint Mountains. 2134 Comment
  RSA100547  Symphoricarpos vaccinioides F. W. Peirson 1930-8-3 9067 Inyo On margin of Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA160278  Senecio canus F. W. Peirson 1929-7-24 s.n. Inyo Green Lake Region, Bishop Creek. 3291 Comment
  RSA499119  Euphorbia incisa F. W. Peirson 1932-5-7 9925 Inyo North Fork of Hanaupah Canyon, Panamint Mts.,t. 1982 Comment
  RSA65069  Eriogonum incanum F. W. Peirson 1940-8-16 12988 Inyo Rock Creek Lake Basin, Sierra Nevada 3293 Comment
  RSA65074  Eriogonum incanum F. W. Peirson 1940-8-1 12987 Inyo Heart Lake Meadow, Rock Creek Lake Basin, Sierra Nevada. 3232 Comment
  RSA65451  Cistanthe pygmaea F. W. Peirson 1937-8-3 13457 Inyo Rock Creek Lake Basin. Comment
  RSA65511  Silene bernardina F. W. Peirson 1933-8-8 10769 Inyo West of Heart Lake, Rock Creek Lake Basin 3506 Comment
  RSA66036  Eriogonum rosense F. W. Peirson 1929-7-24 8548 Inyo Inconsolable Range 3659 Comment
  RSA66156  Erysimum capitatum var. perenne F. W. Peirson 1930-8-10 9171 Inyo Cirque at foot of Mt Dade, Rock Creek Lake Basin. 3628 Comment
  RSA66202  Boechera repanda F. W. Peirson 1933-8-8 10768 Inyo West of Heart Lake, Rock Creek Lake Basin 3506 Comment
  RSA66224  Arabis lemmonii var. depauperata F. W. Peirson 1921-8-18 2534 Inyo Taboose Pass, Sierra Nevada. Comment
  RSA66487  Arctomecon merriamii F. W. Peirson 1932-5-9 9945 Inyo north of Keane Spring, Funeral Mountains 1250 Comment
  RSA66501  Boechera paupercula F. W. Peirson 1933-8-9 10767 Inyo Rock Creek Lake Basin, recess on east slope 3476 Comment
  RSA66722  Galium stellatum F. W. Peirson 1928-4-2 7787 Inyo About 1 mile east of Bradbury Well; Death Valley Region. 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
  RSA68651  Calochortus kennedyi var. munzii Frank W. Peirson 1932-5-8 9938 Inyo Wild Rose Canyon, Panamint Mts. 1829 Comment
  RSA68655  Calochortus kennedyi Frank W. Peirson 1932-5-7 9928 Inyo North fork of Hanaupah Canyon, Panamint Mts. 1982 Comment
  RSA69467  Mirabilis multiflora var. glandulosa F. W. Peirson 1932-5-7 9924 Inyo North fork of Hanaupah Canyon, Panamint Mountains. 2134 Comment
  RSA69733  Luzula subcongesta F. W. Peirson 1939-8-7 12782 Inyo Middle Glacier Lake, Rock Creek Lake Basin. 3415 Comment
  RSA70258  Vaccinium uliginosum subsp. occidentale F. W. Peirson 1933-8-4 s.n. Inyo South of Long Lake, Rock Creek Lake Basin Comment
  RSA72161  Epilobium anagallidifolium F. W. Peirson 1940-8-9 12970 Inyo Rock Creek Lake. 3293 Comment
  RSA73669  Navarretia leptalea F. W. Peirson 1913-8-22 939 Inyo Taboose Pass, Sierra Nevada. Comment
  RSA77644  Eucnide urens F. W. Peirson 1917-8-1 2075 Inyo Independence, Owens Valley. Comment
  RSA78506  Carex aurea F. W. Peirson 1940-8-18 13574 Inyo South of Long Lake, Rock Creek Lake Basin, northern Inyo County. 3262 Comment
  RSA78512  Carex helleri F. W. Peirson 1940-8-9 13562 Inyo east side of Rock Creek Lake Basin 3354 Comment
  RSA78525  Carex heteroneura F. W. Peirson 1939-8-3 13581 Inyo Heart Lake, Rock Creek Lake Basin 3232 Comment
  RSA78552  Carex proposita F. W. Peirson 1940-8-16 13556 Inyo Rock Creek Lake Basin, Sierra Nevada 3293 Comment
  RSA78629  Salix lasiolepis F. W. Peirson 1936-4-6 13526 Inyo Lower Titus Canyon, Death Valley. Comment
  RSA79841  Penstemon monoensis F. W. Peirson 1932-5-6 9887 Inyo 2 miles west of Darwin. 1433 Comment
  RSA79947  Cryptantha nubigena F. W. Peirson 1950-8-9 9153 Inyo East of Heart Lake; Rock Creek Lake Basin 3430 Comment
  RSA79948  Cryptantha nubigena F. W. Peirson 1931-7-18 9594 Inyo East shore of Long Lake, Rock Creek Lake Basin. 3338 Comment
  RSA80045  Castilleja nana F. W. Peirson 1931-7-18 9487 Inyo Upper basin near Chickenfoot Lake, Rock Creek Lake Basin. 3277 Comment
  RSA80094  Mimulus suksdorfii F. W. Peirson 1931-8-1 9490 Inyo west shore Long Lake, Rock Creek Lake Basin, Inyo County. 3247 Comment
  RSA80404  Mimulus nanus var. mephiticus F. W. Peirson 1911-8-8 1139 Inyo Cottonwood Creek, Sierra Nevada. Comment
  RSA80437  Antirrhinum filipes F. W. Peirson 1928-4-2 7782 Inyo About 1 mile south of Bradbury Well, Mojave Desert (Death Valley region). Comment
  RSA84313  Isoetes occidentalis F. W. Peirson 1933-8-11 10800 Inyo lake east of Heart Lake, Rock Creek Lake Basin 3201 Comment
  RSA84428  Aquilegia pubescens F. W. Peirson 1921-8-7 2522 Inyo East slope of Piute Pass, Sierra Nevada. 3354 Comment
  RSA85173  Ephedra funerea F. W. Peirson 1928-4-2 7790 Inyo About 1 mile south of Bradbury Well, Mojave Desert (Death Valley region). Comment
  RSA85684  Potentilla diversifolia F. W. Peirson 1931-7-24 9516 Inyo Meadow at Heart Lake, Rock Creek Lake Basin, extreme northern Inyo county 3201 Comment
  RSA85736  Potentilla jepsonii F. W. Peirson 1931-7-21 9474 Inyo Meadow at Heart Lake, Rock Creek Lake Basin 3201 Comment
  RSA86192  Cystopteris fragilis F. W. Peirson 1939-8-6 12774 Inyo Among rocks along west shore of Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA86306  Ivesia pygmaea F. W. Peirson 1929-7-22 8541 Inyo Bishop Pass. 3659 Comment
  RSA86359  Pinus longaeva F. W. Peirson 1939-8-5 12773 Inyo Near Heart Lake, Rock Creek Lake Basin 3232 Comment
  RSA86780  Festuca brachyphylla F. W. Peirson 1931-7-22 9405 Inyo Near upper Ruby Stream, Rock Creek Lake Basin 3537 Comment
  RSA87126  Koeleria macrantha F. W. Peirson 1931-7-25 9404 Inyo Rock Creek Lake Basin near Heart Lake 3201 Comment
  RSA87332  Melica stricta F. W. Peirson 1914-8-4 1564 Inyo Coyote Creek. 3049 Comment
  RSA87362  Agrostis hyemalis F. W. Peirson 1931-7-31 9612 Inyo Rock Creek Lake Basin 3171 Comment
  RSA87374  Agrostis scabra F. W. Peirson 1930-8-6 9110 Inyo Rock Creek Lake Basin, northern Inyo County. 3049 Comment
  RSA87453  X Agrositanion saundersii F. W. Peirson 1931-7-24 9412 Inyo Long Lake, Rock Creek Lake Basin, northern Inyo County. 3262 Comment
  RSA88662  Carex fissuricola F. W. Peirson 1930-8-3 9072 Inyo On margin of Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA88686  Carex pellita F. W. Peirson 1929-7-19 8481 Inyo Bishop Creek at South Lake 3018 Comment
  RSA88707  Carex hoodii F. W. Peirson 1934-7-24 11306 Inyo West of Heart Lake, Rock Creek Lake Basin, northern Inyo County. 3354 Comment
  SD87591  Draba lemmonii Frank W. Peirson 1929-7-21 8523 Inyo Canyon south of South Lake, Bishop Creek. 3155 Comment
  SD87672  Salix geyeriana Frank W. Peirson 1940-8-13 12950 Inyo Rock Creek Lake Basin, Heart Lake Meadow 3215 Comment
  SEINET179664 Image available Poa stebbinsii Frank W. Peirson 1933-8-6 10816 Inyo Rock Creek Lake Basin, in small meadow eastward from Long Lake. 3261 Comment
  UC221333  Lorandersonia peirsonii Frank W. Peirson 1919-8-27 1404 Inyo Saw Mill Pass 2956 Comment
  UC483073  Salix orestera Frank W. Peirson 1929-7-19 8491 Inyo slopes above South Lake (Bishop Creek); Bishop Creek 3017 Comment
  UC483090  Salix exigua Frank W. Peirson 1932-5-6 9900 b Inyo along canyon bottom Wild Rose Canyon; Panamint Mts., Wild Rose Canyon 1143 Comment
  UC511814  Minuartia nuttallii subsp. gracilis Frank W. Peirson 1933-8-3 Inyo below Ruby Lake; Rock Creek Lake Basin 3352 Comment
  UC511820  Crepis acuminata Frank W. Peirson 1933-8-7 Inyo Long Lake Rock Creek Lake Basin (w shore) 3261 Comment
  UC511823  Eriophorum crinigerum Frank Peirson 1933-8-7 Inyo W shore Long Lake Rock Creek Lake Basin 3246 Comment
  UC511826  Eriogonum ovalifolium var. nivale Frank W. Peirson 1933-8-9 Inyo Rock Creek Lake Basin 3474 Comment
  UC511887  Aquilegia pubescens Frank W. Peirson 1933-8-4 10785 Inyo s Long Lake; Rock Creek Lake Basin 3322 Comment
  UC511888  Trisetum spicatum Frank W. Peirson 1933-8-3 10871 Inyo Heart Lake Rock Creek Lake Basin (meadow) 3200 Comment
  UC599243  Leymus triticoides Frank W. Peirson 1938-7-8 12415 Inyo w Alabama Hills; Lone Pine Creek 1524 Comment
  UC638455  Potentilla diversifolia var. diversifolia Frank W. Peirson 1934-7-29 11293 Inyo in the meadow below Ruby Falls; Rock Creek Lake Basin 3322 Comment
  UC643205  Draba albertina Frank W. Peirson 1940-8-9 12948 Inyo e side canyon (Rock Creek Lake Basin); Rock Creek Lake Basin 3291 Comment
  UC643220  Boechera Frank W. Peirson 1940-8-6 12975 Inyo slope w Heart Lake; Rock Creek Lake Basin 3291 Comment
  UC643223  Eriogonum incanum Frank W. Peirson 1940-8-1 12987 Inyo dry border of Heart Lake Meadow Rock Creek Lake Basin, Heart Lake Meadow 3230 Comment
  UC908866  Gilia scopulorum Frank W. Peirson 1928-4-2 7801 Inyo near Bradbury Well; Death Valley Region, near Bradbury Well Comment
  UCD59146  Bromus carinatus var. marginatus F. W. Peirson 1940-8-6 s.n. Inyo Rock Creek Lake Basin. Slope west of Hart Lake. 3276 Comment
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Aug 19 2014
  UCD61286  Elymus caninus F. W. Peirson 1934-7-28 Inyo Rock Creek Lake Basin, south slope Transverse Ridge. Comment
  CAS-BOT-BC115114  Carex vesicaria Frank Warrington Peirson 1940-8-19 12947 Inyo Rock Creek Lake Basin. In defile cutting across Transverse Ridge. Comment
  CAS-BOT-BC115212  Carex vernacula Frank Warrington Peirson 1934-7-20 11302 Inyo Rock Creek Lake Basin. Meadow slopes at Ruby Falls. 3322 Comment
  CAS-BOT-BC186673  Ranunculus Frank W. Peirson 1939-8-6 s.n. Inyo Rock Creek Lake Basin 3368 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-BC238164  Veronica wormskjoldii Frank W. Peirson 1931-7-25 s.n. Inyo Rock Creek 3169 Comment
  CAS-BOT-BC25490  Boechera retrofracta F. W. Peirson 1931-7-23 s.n. Inyo Heart Lake, Rock Creek Lake Basin. 3230 Comment
  CAS-BOT-BC272596  Eriogonum spergulinum var. reddingianum Frank W. Peirson 1931-7-17 9434 Inyo Rock Creek Lake Basin, Ruby Falls 3322 Comment
  CAS-BOT-BC314415  Hecastocleis Frank W. Peirson 1936-4-6 11804 Inyo Divide above Titus Canyon 2011 Comment
  CAS-BOT-BC31578  Carex luzulina var. luzulina Frank W. Peirson 1931-7-20 s.n. Inyo Ruby Lake, Rock Creek Lake Basin. 3398 Comment
  CAS-BOT-BC339930  Sphaeromeria cana Frank W. Peirson 1930-8-7 9115 Inyo Rock Creek Lake Basin. Slope west of Long Lake 3352 Comment
  CAS-BOT-BC460958  Chenopodium atrovirens Frank W. Peirson 1939-8-6 12776 Inyo Rock Creek Lake Basin, Ruby Lake 3398 Comment
  CAS-BOT-BC519379  Triantha occidentalis subsp. occidentalis Frank W. Peirson 1933-8-14 s.n. Inyo Near Morgan Pass Lakes, Rock Creek Lake Basin 3322 Comment
  JEPS22395  Boechera stricta Frank W. Peirson 1937-8-10 12192 Inyo Ruby Falls Rock Creek Lake Basin 3322 Comment
  JEPS23383  Lupinus pratensis Frank W. Peirson 1937-8-6 Inyo along the shore Box Lake (Rock Creek Lake Basin); , shore of Box Lake 3215 Comment
  JEPS27459  Astragalus lentiginosus var. ineptus Frank W. Peirson 1937-8-8 Inyo between the glacial ridges along the summit of the Transverse Ridge Rock Creek Lake Basin Rock Creek Lake Basin, summit of Transverse Ridge 3352 Comment
  JEPS41249  Jamesia americana var. rosea Frank W. Peirson 1917-1 11 Inyo near The Palisades High Sierra Comment
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Jul 6 2010
  JEPS5604  Ranunculus eschscholtzii Frank W. Peirson 1931-7-26 9450 Inyo dry stream valley s Long Lake; Rock Creek Lake Basin 3276 Comment
  POM175474  Castilleja peirsonii F. W. Peirson 1931-7-18 9078 Inyo Upper basin near Chickenfoot Lake, Rock Creek Lake Basin. 3277 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
  POM231950  Cistanthe rosea F. W. Peirson 1937-8-5 11269 Inyo Rock Creek Lake Basin. 3201 Comment
  POM257995  Sporobolus airoides F. W. Peirson 1938-7-8 s.n. Inyo 5 miles south of Big Pine 1220 Comment
  POM9938  Pellaea breweri F. W. Peirson 1921-8-18 1509 Inyo Taboose Pass 3201 Comment
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Jan 23 2011
  RSA0001040  Castilleja peirsonii F. W. Peirson 1930-8-4 9078 Inyo Upper Rock Creek Lake Basin. 3293 Comment
  RSA0012919  Helianthus nuttallii subsp. nuttallii F. W. Peirson 1914-08 1330 Inyo Bishop, Owens Valley. Comment
  RSA0066485  Phlox caespitosa F. W. Peirson 1930-8-5 9092 Inyo Summit of Mono Pass, Rock Creek Lake Basin. 3659 Comment
  RSA0087202  Orobanche fasciculata F. W. Peirson 1934-7-25 11281 Inyo At edge of Heart Lake Meadow, Rock Creek Lake Basin. 3215 Comment
  RSA0101655  Botrychium simplex var. compositum F. W. Peirson 1930-8-7 9135 Inyo Rock Creek Lake Basin, Sierra Nevada. 3354 Comment
  RSA0101657  Botrychium simplex var. compositum F. W. Peirson 1916-08 1517 a Inyo Silver Lake, Sierra Nevada. 3200 Comment
  RSA0125856  Arabis inyoensis F. W. Peirson 1931-7-18 9455 Inyo On east shore of Long Lake, Rock Creek Lake Basin. 3247 Comment
  RSA64726  Eriogonum spergulinum var. reddingianum F. W. Peirson 1921-8-6 1728 Inyo Camp near Coyote Pass 3201 Comment
  RSA65094  Eriogonum caespitosum F. W. Peirson 1914-8-6 1770 Inyo Piute Pass. Comment
  RSA65100  Eriogonum ovalifolium var. nivale F. W. Peirson 1917-8-20 1750 Inyo Green Lake, Sierra Nevada. Comment
  RSA65225  Eriogonum maculatum F. W. Peirson 1913-1 1727 Inyo Owens Valley. Comment
  RSA65381  Atriplex parryi F. W. Peirson 1917-8-1 s.n. Inyo A mile or two north of Lone Pine, Owens Valley Comment
  RSA65415  Cistanthe rosea F. W. Peirson 1934-7-20 11269 Inyo Near Heart Lake, Rock Creek Lake Basin. 3216 Comment
  RSA65714  Silene bridgesii F. W. Peirson 1911-1 612 Inyo Sierra Nevada Comment
  RSA65726  Montia chamissoi F. W. Peirson 1914-8-7 603 Inyo Piute Creek, Sierra Nevada. Comment
  RSA66210  Arabis holboellii var. retrofracta F. W. Peirson 1930-8-9 9160 Inyo In Ruby Stream, Rock Creek Lake Basin, northern Inyo Co. 3323 Comment
  RSA66349  Eriogonum nudum var. westonii F. W. Peirson 1914-8-4 1757 Inyo Coyote Creek Plateau, Sierra Nevada. 3049 Comment
  RSA66514  Arabis platysperma var. howellii F. W. Peirson 1934-7-23 11297 Inyo Rock Creek Lake Basin 3293 Comment
  RSA66767  Arabis divaricarpa F. W. Peirson 1956-7-24 9456 Inyo Foot of escarpment near Heart Lake, Rock Creek Lake Basin. 3232 Comment
  RSA69027  Dodecatheon alpinum subsp. majus F. W. Peirson 1931-7-17 s.n. Inyo About 1/4 mile south of Ruby Falls, Rock Creek Lake Basin. 3323 Comment
  RSA69028  Dodecatheon alpinum subsp. majus F. W. Peirson 1937-8-3 s.n. Inyo Chickenfoot Lake, Rock Creek Lake Basin. Alt. 10,880 ft. 3317 Comment
  RSA69437  Frasera puberulenta F. W. Peirson 1914-8-20 871 Inyo North Fork of Bishop Creek, Sierra Nevada. 3354 Comment
  RSA69625  Juncus mexicanus F. W. Peirson 1931-8-2 9421 Inyo Near Heart Lake, Rock Creek Lake Basin, northern Inyo County. 3232 Comment
  RSA69903  Menyanthes trifoliata F. W. Peirson 1933-8-22 s.n. Inyo Isoetes Pool near Heart Lake, Rock Creek Lake Basin Comment
  RSA69947  Grayia spinosa F. W. Peirson 1928-4-2 7803 Inyo 18 miles south of Ryan, Death Valley region Comment
  RSA70302  Juncus mertensianus F. W. Peirson 1939-8-7 12783 Inyo Main gorge south of Long Lake, Rock Creek Lake Basin. 3323 Comment
  RSA70528  Calochortus bruneaunis Frank W. Peirson 1930-8-9 9165 Inyo [Near] Ruby Lake, Rock Creek Lake Basin 3323 Comment
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Jan 29 2015
  RSA70580  Sisyrinchium idahoense Frank W. Peirson 1933-8-6 10773 Inyo Heart Lake Meadow, Rock Creek Lake Basin, Sierra Nevada. 3232 Comment
  RSA72190  Epilobium glaberrimum subsp. fastigiatum F. W. Peirson 1934-7-26 s.n. Inyo Rock Creek Lake Basin. 3232 Comment
  RSA73674  Leptosiphon pachyphyllus F. W. Peirson 1921-8-6 2527 Inyo Camp near Coyote Pass 3201 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
  RSA77776  Viola macloskeyi F. W. Peirson 1931-7-22 9465 Inyo Long Lake, Rock Creek Lake Basin. 3262 Comment
  RSA78500  Carex abrupta F. W. Peirson 1940-8-17 13570 Inyo Heart Lake Meadow, Rock Creek Lake Basin. northern Inyo County. 3232 Comment
  RSA78503  Carex jonesii F. W. Peirson 1940-8-17 13571 Inyo Heart Lake Meadow, Rock Creek Lake Basin. northern Inyo County. 3232 Comment
  RSA78547  Carex utriculata F. W. Peirson 1940-8-17 13611 Inyo Heart Lake Meadow, Rock Creek Lake Basin. Comment
  RSA78548  Carex utriculata F. W. Peirson 1940-8-17 13569 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
  RSA79788  Penstemon heterodoxus F. W. Peirson 1931-7-17 9494 Inyo Heart Lake, Rock Creek Lake Basin, northern Inyo Co. 3232 Comment
  RSA80212  Plagiobothrys hispidus F. W. Peirson 1917-8-20 5212 Inyo South Fork of Bishop Creek east slope of Sierra Nevada 2439 Comment
  RSA80346  Cymopterus panamintensis var. panamintensis F. W. Peirson 1932-5-8 9931 Inyo Wild Rose Canyon, Panamint Mountains. 2439 Comment
  RSA80652  Hypericum androsaemum F. W. Peirson 1931-8-2 9464 Inyo Heart lake, Rock Creek Lake Basin 3201 Comment
  RSA83344  Monardella odoratissima subsp. glauca F. W. Peirson 1934-7-26 11284 Inyo Rock Creek Lake Basin. 3232 Comment
  RSA84270  Ranunculus aquatilis var. capillaceus F. W. Peirson 1940-8-5 12990 Inyo south foot of Transverse Ridge, Rock Creek Lake Basin 3201 Comment
  RSA84486  Aconitum columbianum F. W. Peirson 1930-8-8 9151 Inyo Along lower course of Ruby stream west of Heart Lake, Rock Creek Lake Basin, northern Inyo County 3201 Comment
  RSA84862  Ranunculus eschscholtzii F. W. Peirson 1931-7-26 9450 Inyo South of Long Lake, Rock Creek Lake Basin. 3277 Comment
  RSA85569  Zannichellia palustris F. W. Peirson 1925-6-24 6027 Inyo Little Lake, S of Owen Valley, Inyo County. Comment
  RSA85782  Potentilla glandulosa subsp. nevadensis F. W. Peirson 1934-6-25 11322 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3216 Comment
  RSA87226  Lupinus pratensis F. W. Peirson 1921-8-6 2550 Inyo Coyote Creek meadows, Sierra Nevada 3049 Comment
  RSA88746  Carex aurea F. W. Peirson 1934-7-20 11397 Inyo At Ruby Falls. Rock Creek Lake Basin 3323 Comment
  RSA90189  Astragalus coccineus F. W. Peirson 1932-5-8 9937 Inyo Wild Rose Canyon, Panamint Mts. 1829 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
  RSA90761  Astragalus purshii var. lectulus F. W. Peirson 1914-8-4 598 Inyo Coyote Creek. 3049 Comment
  RSA90936  Trifolium monanthum subsp. monanthum F. W. Peirson 1939-8-3 s.n. Inyo Near south end of Long Lake, Rock Creek Lake Basin, northern Inyo Co. Comment
  RSA90966  Erigeron clokeyi F. W. Peirson 1911-8-8 1290 Inyo Cottonwood Creek, Sierra Nevada. Comment
  RSA90971  Erigeron coulteri F. W. Peirson 1939-8-6 12775 Inyo Along west shore of Ruby Lake, Rock Creek Lake Basin 3399 Comment
  RSA91004  Erigeron petiolaris F. W. Peirson 1929-7-22 8540 Inyo Bishop Pass 3659 Comment
  RSA91258  Lupinus breweri var. bryoides F. W. Peirson 1921-8-6 2549 Inyo Coyote Creek meadows, Sierra Nevada 3049 Comment
  RSA91594  Carex canescens F. W. Peirson 1933-8-11 10833 Inyo East Chain lakes, Rock Creek Lake Basin, Sierra Nevada, northern Inyo County. 3216 Comment
  RSA91635  Carex breweri F. W. Peirson 1924-7-21 11395 Inyo Rock Creek Lake Basin, northern Inyo County. 3476 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
  RSA91673  Carex athrostachya F. W. Peirson 1940-8-14 12945 Inyo Heart Lake Meadow, Rock Creek Basin, northern Inyo County. 3201 Comment
  RSA91684  Poa cusickii subsp. cusickii F. W. Peirson 1933-8-9 10821 Inyo Rock Creek Lake Basin, recess on east slope 3293 Comment
  RSA91839  Calamagrostis purpurascens F. W. Peirson 1931-7-22 9397 Inyo Defile west of Long Lake, Rock Creek Lake Basin. 3293 Comment
  RSA91918  Poa secunda F. W. Peirson 1933-8-19 10826 Inyo Rock Creek Lake Basin. Top of Escarpment near Heart Lake 3262 Comment
  RSA91965  Elymus elymoides F. W. Peirson 1940-8-6 12942 Inyo Heart Lake Meadow, Rock Creek Lake Basin 3201 Comment
  RSA91970  Elymus multisetus F. W. Peirson 1932-5-9 9946 Inyo Near Keane Spring, Funeral Mountains. 1250 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
  RSA92636  Salix planifolia F. W. Peirson 1931-8-2 9427 Inyo Near Heart Lake, Rock Creek Lake Basin, northern Inyo County. 3201 Comment
  RSA92864  Chaenactis alpigena F. W. Peirson 1930-8-9 9156 Inyo E of Heart Lake, Rock Creek Lake Basin 3537 Comment
  RSA93001  Erigeron clokeyi F. W. Peirson 1939-8-4 12771 Inyo Near one of the E Chain lakes, Rock Creek lake Basin, Northern Inyo County. 3293 Comment
  RSA93005  Erigeron pygmaeus F. W. Peirson 1930-8-5 9101 Inyo Rock Creek Lake Basin, Trail to Mono Pass 3596 Comment
  RSA93087  Erigeron pygmaeus F. W. Peirson 1921-8-8 2525 Inyo Piute Pass, Sierra Nevada. 3277 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
  RSA93143  Aster occidentalis var. fremontii F. W. Peirson 1931-8-20 9500 Inyo Shore of Ruby Lake, Rock Creek Lake Basin, Sierra Nevada 3399 Comment
  RSA93172  Machaeranthera canescens F. W. Peirson 1931-7-23 9499 Inyo East of Heart Lake, Rock Creek Lake Basin, northern Inyo Co. 3232 Comment
  RSA93234  Ericameria discoidea F. W. Peirson 1929-7-24 8557 Inyo Lower part of Green Lake Valley where the trail turns S for S Lake, Bishop Creek region, Sierra Nevada 3259 Comment
  RSA93264  Erigeron lonchophyllus F. W. Peirson 1929-7-25 8561 Inyo South Lake, Bishop Creek Region, east slope of Sierra Nevada 3018 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
  RSA93681  Antennaria media F. W. Peirson 1933-8-15 10798 Inyo Rock Creek Lake Basin, Northern Inyo Co. 3506 Comment
  RSA93732  Acamptopappus shockleyi F. W. Peirson 1932-5-6 9903 Inyo Wild Rose Canyon, Panamint Mts. 1143 Comment
  RSA93863  Encelia frutescens F. W. Peirson 1930-4-15 8722 Inyo Near Amargosa River 9 miles south of Shoshone. Comment
  RSA93882  Sphaeromeria cana F. W. Peirson 1921-8-18 2772 Inyo Taboose Pass, Sierra Nevada. 3354 Comment
  RSA93891  Encelia frutescens F. W. Peirson 1928-4-2 7800 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA94154  Hulsea algida F. W. Peirson 1930-8-4 9079 Inyo In the pass leading into upper Rock Creek Lake Basin from the SE 3354 Comment
  RSA94201  Monoptilon bellioides F. W. Peirson 1940-3-21 s.n. Inyo Road junct at N side of Death Valley. Comment
  RSA94409  Artemisia ludoviciana subsp. incompta F. W. Peirson 1930-8-7 9114 Inyo Small stream flowing into west side of Long Lake, Rock Creek Lake Basin. 3293 Comment
  RSA94410  Artemisia ludoviciana subsp. incompta F. W. Peirson 1934-7-24 11280 Inyo West of Heart Lake, Rock Creek Lake Basin, northern Inyo County. 3354 Comment
  RSA94509  Arnica mollis F. W. Peirson 1930-8-3 9049 Inyo Heart Lake, Rock Creek Lake Basin. 3200 Comment
  RSA94510  Arnica mollis F. W. Peirson 1930-8-4 9076 Inyo Upper Rock Creek Lake Basin. 3293 Comment
  RSA94513  Arnica nevadensis F. W. Peirson 1930-8-5 9099 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3628 Comment
  RSA94516  Arnica amplexicaulis F. W. Peirson 1934-7-20 11319 Inyo At Ruby Falls, Rock Creek Lake Basin. 3323 Comment
  RSA94524  Raillardella argentea F. W. Peirson 1921-8-6 4246 Inyo Near Coyote Pass, Sierra Nevada 3232 Comment
  RSA94550  Raillardella scaposa F. W. Peirson 1930-8-5 9086 Inyo Along trail below Ruby Lake, Rock Creek Lake Basin 3354 Comment
  RSA94578  Achillea millefolium var. alpicola F. W. Peirson 1940-7-31 12969 Inyo Dry border of Heart Lake Meadow at upper end; Rock Creek Lake Basin, northern Inyo Co., California. 3232 Comment
  RSA94614  Syntrichopappus fremontii F. W. Peirson 1932-5-5 9878 Inyo Red lava formation, foot of red volcanic cone north of Little Lake, western Inyo Co. 1098 Comment
  RSA94719  Senecio fremontii F. W. Peirson 1930-8-5 9094 Inyo East of summit of Mono Pass, Rock Creek Lake Basin 3628 Comment
  RSA94748  Packera pauciflora F. W. Peirson 1931-7-24 9510 Inyo West shore of Long Lake, Rock Creek Lake Basin, Sierra Nevada. 3262 Comment
  RSA94752  Senecio douglasii var. monoensis F. W. Peirson 1936-4-6 11809 Inyo Titus Canyon, Death Valley region 1067 Comment
  RSA94987  Agoseris monticola F. W. Peirson 1917-8-20 1481 Inyo Sierra Nevada: Green Lake region. Coyote Creek Promontory 3352 Comment
  RSA95034  Lepidospartum latisquamum F. W. Peirson 1927-7-24 7541 Inyo East slope of Westgard Pass; Inyo-White Mts. Comment
  RSA95105  Crepis acuminata F. W. Peirson 1929-7-20 8497 Inyo on trail from South Lake to Green Lake, Bishop Creek, Sierra Nevada 3262 Comment
  RSA97316  Lomatium rigidum F. W. Peirson 1914-8-3 805 Inyo Big Pine Creek, east base of Sierra Nevada. Comment
  RSA97462  Perideridia parishii subsp. latifolia F. W. Peirson 1939-8-6 12888 Inyo Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  SEINET209197  Halimolobos diffusa var. jaegeri Frank W. Peirson 1927-7-24 7539 Inyo Westguard Pass East slope in crevices of rock wall. Comment
  SEINET6632133  Poa nervosa Frank W. Peirson 1934-1 Inyo Rock Creek Lake Basin 3261 Comment
  SEINET7563153 Image available Carex jonesii Frank W. Peirson 1934-7-24 11307 Inyo Rock Creek Lake Basin. 3218 Comment
  UC1026426  Carex filifolia var. erostrata F. W. Peirson 1937-8-4 13593 Inyo Escarpment at Heart Lake Rock Creek Basin 3230 Comment
  UC511755  Phacelia calthifolia Frank W. Peirson 1928-4-2 7810 Inyo near Ryan (talus slopes at foot of canyon wall); Furnace Creek 609 Comment
  UC511854  Woodsia scopulina Frank W. Peirson 1933-8-5 Inyo s slope Trnasverse Ridge; Rock Creek Lake Basin 3230 Comment
  UC643226  Ivesia lycopodioides subsp. megalopetala Frank W. Peirson 1940-7-31 Inyo Heart Lake Meadow; Rock Creek Lake Basin 3230 Comment
  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-BC226362  Gilia latiflora subsp. elongata F. W. Peirson 1928-4-4 7825 Kern 11 miles north of Johannesburg on the Trona Road Comment
  CAS-BOT-BC269899  Eriogonum nudum var. pubiflorum Frank W. Peirson 1927-5-29 7319 Kern Just south of Tulare County line; Kern River Comment
  CAS-BOT-BC298348  Eriophyllum ambiguum var. ambiguum Frank W. Peirson 1930-5-14 8855 Kern Greenhorn Range, E slope 1524 Comment
  JEPS1087  Phacelia purpusii Frank W. Peirson 1933-7-9 10702 Kern in clearing along Power Line near Summit Camp (summit of mts.); Greenhorn Mts. 2072 Comment
  JEPS13788  Androsace elongata subsp. acuta Frank W. Peirson 1925-3-19 5483 Kern n slope Tehachapi Pass; n slope Tehachapi Pass 609 Comment
  JEPS50433  Viola pinetorum subsp. pinetorum Frank W. Peirson 1933-7-9 10692 Kern about 2 mi s of Summit Camp (Summit of Greenhorn Mountains); Greenhorn Mountains 2072 Comment
  JEPS57740  Chorizanthe spinosa Frank W. Peirson 1927-5-29 7336 Kern Red Rock Canyon Comment
  PASA1560  Petalonyx nitidus Frank W. Peirson 1927-5-29 Kern Red Rock Canyon, Foot of rocky hills opposite sculptured rocks Comment
  PASA337  Scorzonella sylvatica Frank W. Peirson 1930-5-15 Kern Hills SE. of Glenville, Greenhorn Mts. Comment
  PASA544  Allium fimbriatum var. mohavense Frank W. Peirson 1930-5-13 Kern 5 miles north of Ricardo, Indian Wells Valley 1005 Comment
  POM171913  Collinsia sparsiflora var. collina F. W. Peirson 1930-5-14 8850 Kern Greenhorn Range, east slope 1524 Comment
  POM171945  Arctostaphylos viscida subsp. mariposa F. W. Peirson 1930-5-14 8849 Kern Greenhorn Range, east slope 1524 Comment
  POM231932  Bromus diandrus F. W. Peirson 1937-5-30 12080 Kern Ca. 2 miles above White Oak Lodge, Cottonwood Creek, Tahachapi Mountains. 1677 Comment
  RSA100276  Plectritis ciliosa subsp. insignis F. W. Peirson 1930-5-15 3500 Kern Greenhorn Range, in hills northwest of Glenville 1067 Comment
  RSA65247  Eriogonum viridescens F. W. Peirson 1930-5-13 8803 Kern Red Rock Canyon. 884 Comment
  RSA66711  Caulanthus coulteri F. W. Peirson 1930-5-14 8847 Kern On road from Kernville to Glenville, on east side of Greenhorn Range. 1463 Comment
  RSA68667  Calochortus amoenus Frank W. Peirson 1930-5-15 8876 Kern Greenhorn Range (hills south of Glenville) 1067 Comment
  RSA69701  Mentzelia montana F. W. Peirson 1930-5-14 8845 Kern Road from Kernville to Glenville, Greenhorn Range (east slope) 1463 Comment
  RSA70158  Dichelostemma capitatum subsp. capitatum F. W. Peirson 1933-7-9 10697 Kern About 2 mile S of Summit Camp, Greenhorn Mtns. 2073 Comment
  RSA70193  Allium denticulatum F. W. Peirson 1927-5-29 7328 Kern Just below the summit on west slope of Walker Pass 1585 Comment
  RSA71872  Gilia brecciarum subsp. argusana F. W. Peirson 1932-5-5 9871 Kern Red Rock Canyon. 884 Comment
  RSA71879  Gilia brecciarum subsp. argusana F. W. Peirson 1928-4-4 7824 Kern 11 miles north of Johannesburg Comment
  RSA72157  Gayophytum eriospermum F. W. Peirson 1933-7-9 10694 Kern 2 miles south of Summit Camp, Greenhorn Mountains. 2073 Comment
  RSA73139  Navarretia pubescens F. W. Peirson 1930-5-15 8887 Kern Hills northwest of Glenville, Greenhorn Range. 1037 Comment
  RSA73326  Clarkia speciosa subsp. polyantha F. W. Peirson 10682 Kern Walker Basin, road from caliente to Bodfish. Comment
  RSA73680  Leptosiphon ciliatus F. W. Peirson 1930-5-15 8886 Kern Greenhorn Range, hills southeast of [Glenville]. 1067 Comment
  RSA76033A  Pholistoma membranaceum F. W. Peirson 1925-3-19 5523 Kern Caliente Creek near north foot of Tehachapi Pass Grade Comment
  RSA77236  Eriodictyon californicum F. W. Peirson 1927-5-29 7322 Kern Kern River, just south of Tulare-Kern Co. line. 845 Comment
  RSA77351  Ceanothus diversifolius F. W. Peirson 1930-5-14 8865 Kern Greenhorn Range on road from Kernville to Glenville 1677 Comment
  RSA79468  Collinsia torreyi var. wrightii F. W. Peirson 1933-7-9 10693 Kern 2 miles south of Summit Camp, Greenhorn Mountains. 2073 Comment
  RSA79822  Keckiella breviflora F. W. Peirson 1927-5-28 7315 Kern Kern River road, 22 miles from Bakersfield 610 Comment
  RSA79919  Cryptantha flaccida F. W. Peirson 1927-5-28 7308 Kern Kern River Road, 16 miles from Bakersfield. 457 Comment
  RSA82094  Mimulus aurantiacus var. pubescens F. W. Peirson 1927-5-28 7309 Kern Kern River Road, 16 miles from Bakersfield. 457 Comment
  RSA82206  Trichostema ovatum F. W. Peirson 1916-8-30 1045 Kern near Bakersfield Comment
  RSA83452  Mentha canadensis F. W. Peirson 1908-7-11 s.n. Kern Little Kern River, Southern Sierra Nevada. Comment
  RSA86646  Chamaebatia foliolosa F. W. Peirson 1908-7-11 1956 Kern Little Kern River, Southern Sierra Nevada. Comment
  RSA86860  Prunus fasciculata F. W. Peirson 1927-5-29 7325 Kern 1 mile east of Onyx, South Fork of Kern River. Comment
  SD87565  Keckiella breviflora Frank W. Peirson 1927-5-28 7315 Kern Kern River Road, 22 miles from Bakersfield 609 Comment
  SEINET3142542  Mirabilis laevis var. retrorsa F. W. Peirson 1930-5-13 8900 Kern Red Rock Canyon 884 Comment
  UC511909  Clarkia cylindrica subsp. clavicarpa Frank W. Peirson 1933-7-9 10678 Kern about 6 mi n Caliente (road from Caliente to Bodfish) Comment
  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
  UC511913  Pediomelum californicum Frank W. Peirson 1933-7-9 10686 Kern about 6 mi s Bodfish (Road from Caliente to Bodfish); s of Bodfish Comment
  UC635073  Chorizanthe spinosa Frank W. Peirson 1927-5-7 7274 Kern 3 mi s Muroc; s of Muroc Comment
  UC908844  Gilia latiflora subsp. davyi F. W. Peirson 1925-3-18 5472 Kern s slope of Tehachapi Pass Comment
  UCR143276  Lycium cooperi F. W. Peirson 1925-3-20 5533 Kern San Joaquin Valley, west of boulevard, 20 miles south of Bakersfield 183 Comment
  PASA1066  Lotus argophyllus var. decorus Frank W. Peirson 1930-5-13 Kern Kern River Comment
  RSA0033370  Delphinium gypsophilum F. W. Peirson 1928-4-5 7834 Kern North slope of Tehachapi Pass 457 Comment
  RSA0070650  Cirsium mohavense F. W. Peirson 1929-5-19 8406 Kern 2-3 miles south of Rosamond, Western Mojave Desert, near Los Angeles County line. Comment
  RSA0121151  Eriastrum pluriflorum subsp. albifaux F. W. Peirson 1927-5-29 7332 Kern 10 miles north of Red Rock canyon, Indian Wells Valley, Western Mojave Desert. Comment
  RSA64723  Eriogonum spergulinum var. reddingianum F. W. Peirson 1919-8-10 1729 Kern Junction Meadow, Sierra Nevada 2439 Comment
  RSA66091  Tropidocarpum gracile F. W. Peirson 1925-3-20 5540 Kern In fields 18 miles N of Bakersfield. Comment
  RSA70242  Allium peninsulare var. peninsulare F. W. Peirson 1930-5-13 8831 Kern Cannell Creek, Kern River. 884 Comment
  RSA766128  Eriogonum nudum var. pubiflorum F. W. Peirson 1930-5-13 s.n. Kern About 3 miles southeast of Kernville. Comment
  RSA77761  Viola douglasii F. W. Peirson 1925-3-18 5477 Kern Open field, 1 mi. north of Tehachapi. 1220 Comment
  RSA80159  Plagiobothrys canescens F. W. Peirson 1925-3-19 5505 Kern North slope of Tehachapi Mountains 457 Comment
  RSA80438  Plagiobothrys nothofulvus F. W. Peirson 1925-3-19 5513 Kern Caliente near north base of Tehachapi Mountains. Comment
  RSA90077  Lotus argophyllus subsp. decorus F. W. Peirson 1930-5-15 8840 Kern Island in Kern River Comment
Read comments
Jan 7 2014
  RSA90163  Astragalus douglasii F. W. Peirson 1937-5-30 12077 Kern Open flat about 1 mile below the White Oak Lodge, Cottonwood Creek. 1524 Comment
  RSA91022  Pediomelum californicum F. W. Peirson 1933-7-9 10686 Kern 6 miles south of Bodfish, on road from Caliente. Comment
  RSA91158  Lessingia nana F. W. Peirson 1933-7-9 10683 Kern Walker Basin, between Caliente and Bodfish and about 6 mi. north of the former. Comment
  RSA91302  Vicia americana F. W. Peirson 1933-7-9 10690 Kern Greenhorn Mountains near the summit camp. 2073 Comment
  RSA91782  Ericameria linearifolia F. W. Peirson 1927-5-29 7329 Kern Summit of Walker Pass 1601 Comment
  RSA92233  Madia minima F. W. Peirson 1908-7-12 1345 Kern Lower Kern Lake, Kern River Canyon 1890 Comment
  RSA92275  Layia pentachaeta F. W. Peirson 1925-3-19 5507 Kern North slope of Tehachapi Mountains 457 Comment
  RSA92675  Eriophyllum lanatum var. obovatum F. W. Peirson 1933-7-9 10688 Kern Greenhorn Mountains near the summit camp; 6800 ft. 2073 Comment
  RSA92840  Hemizonia arida F. W. Peirson 1927-5-29 7337 Kern Red Rock Canyon, Southwestern Kern County Comment
  RSA93830  Chaenactis carphoclinia var. carphoclinia F. W. Peirson 1930-5-13 8808 Kern Red Rock Canyon 884 Comment
  RSA94380  Eastwoodia elegans F. W. Peirson 1929-5-18 8405 Kern a sonsiderable colony on rolling hills on lower part of grade on N slope of Tehachapi Pass. Comment
  RSA95079  Microseris sylvatica F. W. Peirson 1924-3-19 5491 Kern north slope of Tehachapi Pass. 610 Comment
  CAS-BOT-BC100716  Blennosperma nanum var. nanum F. W. Peirson 1926-4-2 6583 Lake west end of Clear Lake Comment
  POM89889  Erythronium californicum Frank W. Peirson 1926-4-2 6574 Lake Grade down to Clear Lake, Hopland Road. Comment
  POM89891  Salvia sonomensis F. W. Peirson 1926-4-2 6600 Lake 5 miles west of Lower Lake on Kelseyville Road Comment
  RSA68778  Delphinium variegatum F. W. Peirson, Mabel Peirson 1926-4-2 6564 Lake Hopland Grade Comment
  RSA77807  Cynoglossum grande F. W. Peirson, Mabel Peirson 1926-4-2 6575 Lake Grade from Clear Lake on Hopland Road. Comment
  RSA87201  Lupinus albifrons var. albifrons F. W. Peirson 1926-4-2 6601 Lake Lower Lake Comment
  UC501633  Lessingia ramulosa Frank W. Peirson 1925-8-9 6351 Lake Half mi w Blue Lakes 457 Comment
  RSA65705  Silene californica F. W. Peirson 1928-7-4 7956 Lake 8 miles west of Lower Lake. Comment
  RSA84874  Ranunculus hebecarpus Mabel Peirson 1926-4-2 6603 Lake Hill top back from Lower Lake Comment
  RSA90885  Carex serratodens F. W. Peirson, Mabel Peirson 1926-4-3 6615 Lake 3.3 mi N of Middletown. Lake County Comment
  RSA91545  Trifolium dichotomum F. W. Peirson 1926-4-3 6608 Lake 3.3 miles north of Middletown. Comment
  RSA91990  Pleuropogon californicus var. davyi F. W. Peirson, Mabel Peirson 1926-4-2 6592 Lake 3 miles east of Kelseyville on road to Lower Lake Comment
  RSA93940  Blennosperma nanum F. W. Peirson 1926-4-2 6583 Lake West end of Clear Lake. Comment
  RSA97149  Lomatium marginatum F. W. Peirson 1926-4-3 6607 Lake 3.3 mi N of Middletown. Comment
  SD87855  Lagophylla ramosissima Frank W. Peirson 1925-8-9 6350 Lake 6.0 miles west of Blue Lakes on the Ukiah Road. Comment
  RSA92671  Eriophyllum lanatum var. achilleoides F. W. Peirson 1926-6-24 6849 Lassen Several miles southward from the Madeline Plain 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-BC175149  Silene verecunda Frank W. Peirson 1920-9-15 2284 Los Angeles San Gabriel Mts. Baldy, north slope 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-BC205150  Lupinus elatus F. W. Peirson 1918-6-10 89 Los Angeles San Gabriel Peak Comment
  CAS-BOT-BC225494  Gilia nevinii Frank W. Peirson 1923-4-9 3433 Los Angeles Wilson's Cove, San Clemente Is. Comment
  CAS-BOT-BC242780  Eriogonum davidsonii Frank W. Peirson 1919-7-29 18 Los Angeles Summit of Mt. Wilson, San Gabriel Mts. Comment
  CAS-BOT-BC253462  Eriogonum gracile Frank W. Peirson 1923-10-7 4164 Los Angeles Newhall at R.R. Station, San Gabriel Mts. 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-BC268209  Eriogonum umbellatum var. munzii Frank W. Peirson 1923-8-30 4684 Los Angeles Mountain north of Big Pines, San Gabriel Mts. 2286 Comment
  CAS-BOT-BC268210  Eriogonum umbellatum var. munzii Frank W. Peirson 1922-7-5 4684 Los Angeles Peak north of Big Pines Camp, San Gabriel Mountains 2209 Comment
  CAS-BOT-BC293120  Ericameria pinifolia Frank W. Peirson 1918-10-20 s.n. Los Angeles Rubio Wash at New York Ave., Altadena Comment
  CAS-BOT-BC329381  Lepidospartum latisquamum Frank W. Peirson 1928-9-5 8194 Los Angeles Swartout Valley [this sp. also found in Sheep Creek] 2011 Comment
  CAS-BOT-BC356543  Pseudognaphalium biolettii Frank W. Peirson 1923-4-12 3465 Los Angeles Wilsons 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-BC376010  Stylocline gnaphaloides F. W. Peirson 1921-5-20 2789 Los Angeles Little Rock Creek, San Gabriel Mts. 1097 Comment
  CAS-BOT-BC422743  Meconella denticulata Frank W. Peirson 1925-4-23 5806 Los Angeles San Gabriel Canyon below Forks 365 Comment
  CAS-BOT-BC432203  Lithophragma bolanderi Frank W. Peirson 1922-6-3 3079 Los Angeles Collins Ranch, Liebre Mts. 1143 Comment
  JEPS10610  Mimulus pilosus Frank W. Peirson 1918-10-16 269 Los Angeles Pacoima Canyon San Gabriel Mountains 548 Comment
  JEPS11571  Keckiella cordifolia Frank W. Peirson 1918-6-28 205 Los Angeles e of Rubio Canyon; San Gabriel Mountains 609 Comment
  JEPS11573  Penstemon centranthifolius Frank W. Peirson 1918-6-16 207 Los Angeles Rock Creek n side of San Gabriel Mountains, Rock Creek 1447 Comment
  JEPS12738  Sambucus mexicana Frank W. Peirson 1919-4-24 391 Los Angeles canyon e Rubio; San Gabriel Mountains 548 Comment
  JEPS12848  Lonicera hispidula var. vacillans Frank W. Peirson 1918-6-30 218 Los Angeles Mt. Wilson Toll Road San Gabriel Mountains 1158 Comment
  JEPS1433  Nama californica Frank W. Peirson 1919-5-10 396 Los Angeles Arraster Creek; San Gabriel Mountains, Arraster Creek 914 Comment
  JEPS1475  Phacelia affinis Frank W. Peirson 1919-5-10 410 Los Angeles Arraster Creek San Gabriel Mountains 914 Comment
  JEPS16106  Lomatium dissectum var. multifidum Frank W. Peirson 1922-7-6 3187 Los Angeles San Antonio Mts., Big Pines 2072 Comment
  JEPS18579  Brickellia californica Frank W. Peirson 1918-9-7 221 Los Angeles Head of Eaton Creek San Gabriel Mountains, Eaton Creek 1554 Comment
  JEPS19136  Ericameria cuneata var. cuneata Frank W. Peirson 1918-9-7 222 Los Angeles trail from Mt. Lowe to Mt. Wilson; San Gabriel Mountains 1615 Comment
  JEPS19961  Ambrosia acanthicarpa Frank W. Peirson 1918-10-16 271 Los Angeles in Pacoima Canyon 518 Comment
  JEPS20492  Pseudognaphalium californicum Frank W. Peirson 1918-6-28 235 Los Angeles foothills e of Rubio Canon; San Gabriel Mountains 609 Comment
  JEPS20988  Eschscholzia ramosa F. W. Peirson 1923-4-11 3469 Los Angeles on bluff above sea San Clemente Isl. (Eagle Ranch Creek) Comment
  JEPS2128  Phacelia longipes Frank W. Peirson 1919-4-19 381 Los Angeles Pacoima Canyon San Gabriel Mountains 487 Comment
  JEPS21516  Ericameria nauseosa var. bernardina Frank W. Peirson 1918-9-7 226 Los Angeles trail near Mt. Markham; San Gabriel Mts. 1645 Comment
  JEPS2294  Phacelia cryptantha Frank W. Peirson 1923-5-25 3529 Los Angeles Rock Creek San Gabriel Mountains 1295 Comment
  JEPS26957  Senecio astephanus Frank W. Peirson 1920-6-10 1432 Los Angeles near Inspiration Point (on Mt. Lowe); San Gabriel Mts., Mt. Lowe 1371 Comment
  JEPS27573  Gayophytum oligospermum Frank W. Peirson 1921-7-3 2483 Los Angeles Vincent Gulch San Gabriel Mountains 1981 Comment
  JEPS27588  Gayophytum heterozygum F. W. Peirson 1918-6-30 130 Los Angeles Mt. Wilson San Gabriel Mountains (near summit) Comment
  JEPS2994  Osmorhiza brachypoda Frank W. Peirson 1919-5-21 451 Los Angeles Arroyo Seco San Gabriel Mountains 609 Comment
  JEPS31639  Calystegia peirsonii F. W. Peirson 1927-5-21 7301 Los Angeles Rock Creek , Rock Creek (San Gabriel Range) 1524 Comment
  JEPS31648  Calystegia macrostegia subsp. intermedia F. W. Peirson 1918-6-28 151 Los Angeles foothills e Rubio Canyon (San Gabriel Mountains); , fthills e of Rubio Canyon 579 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
  JEPS34718  Eriophyllum confertiflorum var. confertiflorum F. W. Peirson 1920-9-12 2276 Los Angeles s trail Baldy; San Gabriel Mts., Baldy 2438 Comment
  JEPS36641  Malacothrix glabrata F. W. Peirson 1921-6-20 2149 a Los Angeles North Fork San Gabriel River San Gabriel Mts. 762 Comment
  JEPS36880  Stephanomeria exigua subsp. coronaria Frank W. Peirson 1923-8-31 4014 Los Angeles Blue Ridge San Gabriel Mountains 2529 Comment
  JEPS36927  Artemisia californica F. W. Peirson 1918-9-15 245 Los Angeles near foot of Sister Elsie Peak trail Sister Elsie Peak (now Mount Lukens); San Gabriel Mountains 640 Comment
  JEPS37335  Quercus chrysolepis Frank W. Peirson 1918-5-19 16 Los Angeles Echo Mountain San Gabriel Range 1036 Comment
  JEPS37499  Packera ionophylla F. W. Peirson 1922-7-6 3195 Los Angeles Big Pines Region San Gabriel Mts. Comment
  JEPS38441  Salix laevigata Frank W. Peirson 1919-3-30 359 Los Angeles San Gabriel Mts., Big Tujunga Canyon Comment
  JEPS40241  Vitis girdiana Frank W. Peirson 1919-5-18 442 Los Angeles Monrovia Canyon San Gabriel Mts. 365 Comment
  JEPS41225  Mentzelia congesta Frank W. Peirson 1923-5-25 3523 Los Angeles San Gabriel Mountains, Rock Creek Comment
  JEPS41864  Corethrogyne filaginifolia Frank W. Peirson 1918-8-6 257 Los Angeles Mt. Wilson, Toll Road San Gabriel Mts., Mt. Wilson 883 Comment
  JEPS41979  Rhamnus crocea Frank W. Peirson 1919-3-27 339 Los Angeles w of Arroyo Seco; San Gabriel Mountains 396 Comment
  JEPS42268  Ceanothus cordulatus Frank W. Peirson 1920-9-14 2277 Los Angeles Coldwater Creek, Coldwater Canyon, in the trail fork head of San Antonio Divide San Gabriel Mtns, San Antonio Mtns Comment
  JEPS42284  Ceanothus oliganthus var. oliganthus Frank W. Peirson 1927-3-19 7116 Los Angeles Seminole Hot Springs Region Santa Monica Mountains 457 Comment
  JEPS42547  Arctostaphylos glandulosa subsp. glandulosa Frank W. Peirson 1918-5-26 141 Los Angeles summit Mt. Wilson Comment
  JEPS42675  Acer macrophyllum Frank W. Peirson 1918-6-17 107 Los Angeles Rock Creek San Gabriel Mts., Rock Creek 1950 Comment
  JEPS43189  Claytonia parviflora subsp. viridis Frank W. Peirson 1923-5-26 3545 Los Angeles n of Rock Creek Divide; San Gabriel Mountains 2133 Comment
  JEPS43691  Clarkia purpurea subsp. quadrivulnera Frank W. Peirson 1919-6-5 467 Los Angeles San Antonio Canyon San Gabriel Mountains 1341 Comment
  JEPS43697  Clarkia bottae Frank W. Peirson 1919-5-18 432 Los Angeles Monrovia Canyon San Gabriel Mountains 304 Comment
  JEPS43807  Saxifraga californica Frank W. Peirson 1919-4-19 373 Los Angeles Pacoima Canyon; San Gabriel Mountains, Pacoima Canyon 533 Comment
  JEPS43825  Clarkia dudleyana Frank W. Peirson 1919-6-7 466 Los Angeles Cow Canyon Divide San Gabriel Mountains 1371 Comment
  JEPS43895  Mentzelia ravenii Frank W. Peirson 1919-5-10 395 Los Angeles San Gabriel Mountains, Arraster Creek 914 Comment
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Feb 20 2013
  JEPS44023  Epilobium canum subsp. latifolium Frank W. Peirson 1920-9-13 2282 Los Angeles San Antonio Canyon San Gabriel Mountains 2133 Comment
  JEPS44247  Drymocallis cuneifolia var. ewanii Frank W. Peirson 1919-6-16 493 Los Angeles South Fork Rock Creek San Gabriel Mts., South Fork Rock Creek 1981 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
  JEPS44525  Horkelia rydbergii Frank W. Peirson 1921-6-15 2448 Los Angeles San Gabriel Mts., Pine Flats stream [Charlton Flat] 1524 Comment
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Jul 29 2016
  JEPS44773  Rubus parviflorus F. W. Peirson 1921-6-17 1958 Los Angeles on Chilao-Islip Trail at crossing Little Rock (San Gabriel Mts.); , crossing of Little Rock 1981 Comment
  JEPS45027  Heteromeles arbutifolia Frank W. Peirson 1918-7 77 Los Angeles Santa Anita Canyon; San Gabriel Mts. 792 Comment
  JEPS45138 Image available Amelanchier utahensis Frank W. Peirson 1920-5-29 2155 Los Angeles Icehouse Canyon; San Gabriel Mts. 1981 Comment
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Dec 10 2014
  JEPS45538  Cercocarpus betuloides var. betuloides Frank W. Peirson 1919-3-27 340 Los Angeles road out of Arroyo Seco San Gabriel Mountains 533 Comment
  JEPS45576  Cercocarpus Frank W. Peirson 1918-5-26 79 Los Angeles Summit of Mount Wilson Comment
  JEPS45732  Datisca glomerata Frank W. Peirson 1918-7-13 122 Los Angeles Santa Anita Canyon; San Gabriel Mountains, Santa Anita Canyon 762 Comment
  JEPS45766  Elatine brachysperma Frank W. Peirson 1921-6-19 2470 Los Angeles Crystal Lake San Gabriel Mtns Comment
  JEPS49340  Ribes indecorum Frank W. Peirson 1919-5-21 299 a Los Angeles San Gabriel Mountains, Arroyo Seco, Trail to Switzers Arroyo Seco; San Gabriel Mountains, Arroyo Seco 944 Comment
  JEPS49394  Ribes montigenum Frank W. Peirson 1918-8-16 73 Los Angeles summit Baldy; Mt. San Antonio Comment
  JEPS5093  Asclepias californica Frank W. Peirson 1923-5-26 3541 Los Angeles Rock Creek Divide 2011 Comment
  JEPS51887  Chamaesyce albomarginata Frank W. Peirson 1919-6-13 459 Los Angeles San Gabriel Mtns, Rock Creek Canyon 1295 Comment
  JEPS5222  Castilleja applegatei subsp. martinii Frank W. Peirson 1921-7-17 2505 Los Angeles Prairie Fork San Gabriel Mountains, San Gabriel River 2011 Comment
  JEPS5280  Antirrhinum kelloggii F. W. Peirson 1918-6-4 189 Los Angeles just ne Altadena (foothills e of Rubio Canyon); Angeles National Forest 609 Comment
  JEPS53397  Cardamine californica var. integrifolia Frank W. Peirson 1918-10-16 265 Los Angeles Pacoima Canyon San Gabriel Mts., Pacoima Canyon (San Gabriel Mountains) 548 Comment
  JEPS53579  Erysimum capitatum var. capitatum Frank W. Peirson 1919-3-27 337 Los Angeles Arroyo Seco Canyon San Gabriel Mountains 411 Comment
  JEPS53619  Lepidium fremontii Frank W. Peirson 1921-5-19 677 Los Angeles Little Rock Creek San Gabriel Mts. 960 Comment
  JEPS54161  Thysanocarpus curvipes Frank W. Peirson 1919-3-27 388 Los Angeles hills w Arroyo Seco; San Gabriel Mountains, hills w of Arroyo Seco 426 Comment
  JEPS56460  Eriogonum pusillum Frank W. Peirson 1921-7-2 4203 Los Angeles Pallett Creek San Gabriel Mts., Pallett Creek Comment
  JEPS56555  Eriogonum plumatella Frank W. Peirson 1923-9-1 4002 Los Angeles Sheep Creek San Gabriel Mountains 1584 Comment
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Dec 11 2014
  JEPS56694  Eriogonum davidsonii Frank W. Peirson 1918-11-2 297 Los Angeles summit Mt. Wilson San Gabriel Mountains, Mt. Wilson 1767 Comment
  JEPS56746  Eriogonum mohavense Frank W. Peirson 1919-5-11 407 Los Angeles Soledad Canyon San Gabriel Mountains, Soledad Canyon 807 Comment
  JEPS56881  Eriogonum heermannii var. heermannii Frank W. Peirson 1918-6-18 23 Los Angeles Lower Rock Creek Canyon San Gabriel Mts., Lower Rock Creek Canyon 1219 Comment
  JEPS57642  Dodecahema leptoceras Frank W. Peirson 1921-6-21 2455 Los Angeles West Fork San Gabriel River San Gabriel Mountains 640 Comment
  JEPS57994  Pterostegia drymarioides Frank W. Peirson 1918-5-19 17 Los Angeles Millards Canyon San Gabriel Mts., Millards Canyon Comment
  JEPS59569  Atriplex rosea Frank W. Peirson 1923-8-30 4009 Los Angeles Lone Pine Canyon San Gabriel Mountains, Lone Pine Cayon, Cyde Ranch (Clyde Ranch) Comment
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Feb 21 2013
  JEPS62047  Lilium parryi Frank W. Peirson 1921-7-17 2515 Los Angeles Prairie Fork, San Gabriel River; San Gabriel Mountains 2133 Comment
  JEPS62700  Salvia dorrii Frank W. Peirson 1919-5-11 392 Los Angeles Arraster Canyon; San Gabriel Mts. 838 Comment
  JEPS62730  Salvia leucophylla Frank W. Peirson 1919-5-11 412 Los Angeles Soledad Canyon San Gabriel Mts. (n slope of San Gabriel Mts) 426 Comment
  JEPS62952  Stachys ajugoides var. rigida Frank W. Peirson 1918-8-16 179 Los Angeles San Antonio Canyon San Gabriel Mts. 1341 Comment
  JEPS65003  Lupinus bicolor Frank W. Peirson 1918-5-26 91 Los Angeles Henninger Flats San Gabriel Mts., Henninger Flats 868 Comment
  JEPS65121  Lupinus elatus Frank W. Peirson 1921-6-16 2438 Los Angeles Waterman Ridge; San Gabriel Mts., Waterman Ridge 2286 Comment
  JEPS65123  Lupinus elatus Frank W. Peirson 1918-6-10 89 Los Angeles Summit of San Gabriel Peak San Gabriel Peak Comment
  JEPS65128  Lupinus excubitus var. austromontanus Frank W. Peirson 1919-6-14 522 Los Angeles Rock Creek San Gabriel Mts., Rock Creek 1981 Comment
  JEPS65299  Lupinus longifolius F. W. Peirson 1920-5-14 2147 Los Angeles Lukens Peak; San Gabriel Mts. 914 Comment
  JEPS6598  Galium aparine F. W. Peirson 1921-6-19 1184 Los Angeles North Fork San Gabriel River San Gabriel Mts. 1005 Comment
  JEPS66754  Garrya veatchii Frank W. Peirson 1918-5-27 139 Los Angeles n of Claremont; San Gabriel Mts., San Antonio Canyon 1371 Comment
  JEPS69442  Gilia angelensis Frank W. Peirson 1919-5-14 424 Los Angeles Eaton Canyon San Gabriel Mountains, Eaton Canyon 762 Comment
  JEPS69712  Gilia splendens subsp. splendens Frank W. Peirson 1921-7-3 2485 Los Angeles trail ne Rock Creek divide; San Gabriel Mountains, ne of Rock Creek divide 2133 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
  JEPS7146  Plantago major Frank W. Peirson 1919-6-5 462 Los Angeles San Antonio Canyon San Gabriel Mountains 1341 Comment
  JEPS9911  Lasthenia coronaria Frank W. Peirson 1919-3-27 330 Los Angeles Arroyo Seco Canyon San Gabriel Mountains, Arroyo Seco Canyon 411 Comment
  PASA1349  Lepidospartum squamatum Frank W. Peirson 1919-10-20 Los Angeles Brae-Burn Road near the Rubio stream bed. Altadena Comment
  PASA1978  Cryptantha circumscissa Mabel B. Peirson 1933-5-13 Los Angeles Lovejoy Buttes Comment
  PASA2042  Lepidium nitidum Frank W. Peirson 1921-2-26 Los Angeles Topanga Canyon 304 Comment
  PASA238  Trifolium microcephalum Frank W. Peirson 1919-5-18 Los Angeles Monrovia Canyon, San Gabriel Mts. 457 Comment
  PASA262  Vicia americana Frank W. Peirson 1921-4-10 Los Angeles San Dimas Canyon, San Gabriel Mts. 426 Comment
  PASA321  Malacothrix clevelandii Frank W. Peirson 1919-5-21 Los Angeles Arroyo Seco, San Gabriel Mts. 685 Comment
  POM47663  Lithophragma tenellum F. W. Peirson 1921-6-16 4690 Los Angeles Summit of Mt. Waterman, San Gabriel Mountains 2317 Comment
  RSA297993  Stachys albens F. W. Peirson 1918-8-16 179 Los Angeles San Antonio Canyon, San Gabriel Mts. 1341 Comment
  RSA33252  Ericameria cuneata var. cuneata F. W. Peirson 1924-12-5 5381 Los Angeles San Gabriel Peak at head of Eaton Canyon 1646 Comment
  RSA65103  Eriogonum cinereum F. W. Peirson 1906-7-9 1761 Los Angeles Rustic Canyon. Comment
  RSA65159  Eriogonum elongatum var. elongatum F. W. Peirson 1919-10-26 19 Los Angeles Along Pacific Electric tracks to Rubio Canyon, San Gabriel Mts. 549 Comment
  RSA65385  Atriplex pacifica F. W. Peirson 1923-4-11 3461 Los Angeles In canyon below farm buildings at Eagle Ranch, San Clemente Island Comment
  RSA65788  Cleomella obtusifolia F. W. Peirson 1933-5-13 10661 Los Angeles 12 miles south of Muroc. Comment
  RSA66060  Rorippa palustris subsp. occidentalis F. W. Peirson 1907 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA66082  Sinapis arvensis F. W. Peirson 1919-4-5 1898 Los Angeles New York Ave. Altadena 351 Comment
  RSA66342  Eriogonum brachyanthum F. W. Peirson 1921-5-19 2656 Los Angeles Little Rock Creek: north base of San Gabriel Mountains 976 Comment
  RSA66505  Arabis glabra F. W. Peirson 1903-3-10 658 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA66814  Stanleya pinnata var. pinnata F. W. Peirson 1918-6-16 292 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1448 Comment
  RSA67136  Galium porrigens var. porrigens F. W. Peirson 1918-5-26 2652 Los Angeles Summit of Mt. Wilson, San Gabriel Mts Comment
  RSA67367  Guillenia lasiophylla F. W. Peirson 1919-3-27 327 Los Angeles Foot of trail to Lukens Peak 609 Comment
  RSA68637  Calochortus plummerae Frank W. Peirson 1921-6-20 2666 Los Angeles North Fork of San Gabriel River 762 Comment
  RSA68638  Calochortus plummerae Frank W. Peirson 1918-6-12 8 Los Angeles Burnt area in hills east of Rubio Canyon, San Gabriel Mountains. Comment
  RSA68668  Calochortus albus Frank W. Peirson 1923-5-21 8605 Los Angeles Fish Canyon, San Gabriel Mountains. 610 Comment
  RSA68709  Lilium parryi Frank W. Peirson 1921-7-17 2515 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2134 Comment
  RSA68724  Fritillaria pinetorum Frank W. Peirson 1922-7-6 5337 Los Angeles Westward from highest point of Blue Ridge, San Gabriel Mountains 2500 Comment
  RSA69308  Pyrola picta F. W. Peirson 1921-7-17 2512 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2134 Comment
  RSA69720  Mentzelia montana F. W. Peirson 1921-6-16 2799 -a Los Angeles north slope of Mt. Waterman, San Gabriel Mts. 2210 Comment
  RSA69912  Asclepias vestita F. W. Peirson 1928-6-3 7950 Los Angeles roadside, N slope of Pinyon Ridge, betw Rock Creek and Big Pines, San Gabriel Mts. 1372 Comment
  RSA69948  Grayia spinosa F. W. Peirson 1917-5-13 1832 Los Angeles Roadside near village of Little Rock, north side of San Gabriel Mountains. Comment
  RSA70261  Juncus macrandrus F. W. Peirson 1922-7-6 3180 Los Angeles Big Pines Meadow, Swartout Valley Region, San Gabriel Mountains. 2088 Comment
  RSA70353  Funastrum cynanchoides var. hartwegii F. W. Peirson 889 Los Angeles near bridge southeast of Monrovia. Comment
  RSA70398  Chamaesyce serpillifolia F. W. Peirson 1920-6-14 2162 Los Angeles At Peirson home, 1082 New York Drive, Altadena Comment
  RSA70874  Arctostaphylos glauca F. W. Peirson 1924-12-5 5383 Los Angeles Little Santa Anita Canyon 915 Comment
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Dec 30 2007
  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
  RSA72142  Gayophytum oligospermum F. W. Peirson 1922-7-5 4455 Los Angeles Big Pines. Northeast portion of San Gabriel Mountains. 2104 Comment
  RSA72170  Epilobium ciliatum subsp. ciliatum F. W. Peirson 765 Los Angeles Long Beach. Comment
  RSA72217  Clarkia heterandra F. W. Peirson 1922-6-3 3083 Los Angeles At Collins Ranch, north slope of Liebre Mts. 1143 Comment
  RSA72221  Gaura sinuata F. W. Peirson 1919-8-10 2088 Los Angeles Along road from San Gabriel to El Monte. Comment
  RSA72249  Camissonia claviformis subsp. claviformis F. W. Peirson 1926-4-27 6664 Los Angeles San Gabriel Mountains. North side of San Gabriel Mountains, Rock Creek. 1296 Comment
  RSA72258  Camissonia cheiranthifolia subsp. suffruticosa F. W. Peirson 1921-2-26 2579 Los Angeles Beach 1 mile east of Topango [Topanga]. Comment
  RSA72290  Gilia angelensis F. W. Peirson 1918-6-16 469 Los Angeles Mint Canyon, Sierra Pelona Valley, northwest corner of San Gabriel Mts. 762 Comment
  RSA72316  Gilia brecciarum subsp. brecciarum F. W. Peirson 1921-5-20 4704 Los Angeles Little Rock Creek, N slope of San Gabriel Mts 1037 Comment
  RSA73012  Linanthus concinnus F. W. Peirson 365 Los Angeles Summit of Mt. Lowe. Comment
  RSA73076  Leptosiphon liniflorus F. W. Peirson 1922-6-3 3077 Los Angeles North of Collins Ranch, Oakgrove Canyon, Liebre Mts. 1006 Comment
  RSA73283  Linanthus pungens F. W. Peirson 1921-6-16 2828 Los Angeles Ridge Westward from summit of Mt. Waterman, San Gabriel Mts. 2256 Comment
  RSA73320  Clarkia cylindrica subsp. cylindrica F. W. Peirson 1921-5-18 2797 Los Angeles summit of Newhall Grade, near Newhall. 427 Comment
  RSA74919  Phacelia egena F. W. Peirson 1928-6-2 7946 Los Angeles along lower part of trail up S Fork of Rock Creek, San Gabriel Mts 1524 Comment
  RSA74921  Phacelia egena F. W. Peirson 1930-5-30 8903 Los Angeles North slope of Rock Creek 1372 Comment
  RSA74948  Phacelia distans F. W. Peirson 1921-5-20 4714 Los Angeles Little Rock Creek: north base of San Gabriel Mountains. 1006 Comment
  RSA74959  Phacelia douglasii F. W. Peirson 1922-6-3 3085 Los Angeles East of Oak Grove Creek Divide, Liebre Mts. 1174 Comment
  RSA75121  Nemacladus ramosissimus F. W. Peirson 1918-6-4 220 Los Angeles Burned area in Hlls east of Rubio Canyon Comment
  RSA75379  Ludwigia peploides subsp. peploides F. W. Peirson 1916-09 2080 Los Angeles Kewen Lake, Pasadena Comment
  RSA75411  Oenothera elata subsp. hirsutissima F. W. Peirson 1920-9-17 780 Los Angeles San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA75437  Camissonia hirtella F. W. Peirson 1918-5-4 2309 Los Angeles Summit of Santa Monica Range, above Brents on the Malibu Comment
  RSA75529  Phacelia fremontii F. W. Peirson 1919-5-10 400 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains. 915 Comment
  RSA77144  Ceanothus crassifolius F. W. Peirson 1921-5-12 4444 Los Angeles Santa Anita Canyon, just below Forks in trail; San Gabriel Mountains. Comment
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Sep 30 2014
  RSA77163  Ceanothus leucodermis F. W. Peirson 1918-5-19 112 Los Angeles Dawn Station along the trolley to Mt. Lowe, San Gabriel Mts. 1037 Comment
  RSA77171  Rhus integrifolia F. W. Peirson 1919-1-25 313 Los Angeles Arroyo Seco, near Pasadena 381 Comment
  RSA77765  Viola douglasii F. W. Peirson 1921-6-15 2447 Los Angeles Trail from Pine Flats to Chilao. 1677 Comment
  RSA79455  Scrophularia californica F. W. Peirson 1911-04 191 Los Angeles Laurel Canyon. Comment
  RSA79567  Cryptantha intermedia F. W. Peirson 1919-5-11 402 Los Angeles Arraster Creek, San Gabriel Mountains 915 Comment
  RSA79815  Collinsia callosa F. W. Peirson 1921-6-15 2443 Los Angeles Chilao, San Gabriel Mountains. 1646 Comment
  RSA79838  Penstemon heterophyllus subsp. heterophyllus F. W. Peirson 202 Los Angeles Devils Gate, Arroyo Seco, west of Pasadena. Comment
  RSA80069  Veronica arvensis F. W. Peirson 1919-4-25 1096 Los Angeles Lawn at 1077 New York Drive, Altadena. Comment
  RSA80121  Mimulus cardinalis F. W. Peirson 1910-08 194 Los Angeles Mt. Lowe, San Gabriel Mountains. Comment
  RSA80343  Orthocarpus densiflorus var. gracilis F. W. Peirson 1164 Los Angeles Garvanza. Comment
  RSA82045  Cordylanthus rigidus subsp. setiger F. W. Peirson 1921-11-12 2793 Los Angeles Collins Ranch, north slope of Liebre Mts. 1220 Comment
  RSA82062  Cordylanthus maritimus subsp. maritimus F. W. Peirson 1924-8-29 5098 Los Angeles 2 miles south of Artesia Comment
  RSA82437  Salvia leucophylla F. W. Peirson 1919-5-11 412 Los Angeles Mint Canyon road near the bridge over the Santa Clara River, northwest of San Gabriel Mts. 427 Comment
  RSA82555  Stachys albens F. W. Peirson 1921-7-1 1046 Los Angeles Santa Clara River bed in Soledad Canyon, near bridge on road to Mint Canyon. 442 Comment
  RSA83360  Dudleya cymosa subsp. pumila F. W. Peirson 1919-5-10 453 Los Angeles Mt.Gleason 1372 Comment
  RSA83366  Dudleya cymosa subsp. pumila F. W. Peirson 1919-5-14 452 Los Angeles Eaton Canyon. 685 Comment
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Dec 9 2015
  RSA83395  Dudleya densiflora F. W. Peirson 1919-7-1 517 Los Angeles Fish Canyon 274 Comment
  RSA84353  Boykinia rotundifolia F. W. Peirson 1904-8-28 74 Los Angeles Little Santa Anita Canyon, south base of San Gabriel Mts. Comment
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Feb 1 2012
  RSA84378  Lithophragma bolanderi F. W. Peirson 1922-6-3 3079 Los Angeles At Collins Ranch, north slope of Liebre Mts. 1143 Comment
  RSA84469  Clematis pauciflora F. W. Peirson 1921-3-6 s.n. Los Angeles San Gabriel Wash. 213 Comment
  RSA84970  Ribes speciosum F. W. Peirson 1927-3-19 7112 Los Angeles Seminole Hot Springs. Santa Monica Mts. Comment
  RSA84973  Ribes roezlii F. W. Peirson 1919-6-14 690 Los Angeles near top of Big Rock Creek 1951 Comment
  RSA85055  Ephedra nevadensis F. W. Peirson 1921-5-19 1527 Los Angeles Little Rock Creek 945 Comment
  RSA85310  Paeonia californica Mabel Peirson 1925-2-14 5434 Los Angeles Arroyo Seco at the Devil's Gate, Pasadena Comment
  RSA85766  Potentilla glandulosa subsp. nevadensis F. W. Peirson 1921-7-17 2678 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2058 Comment
  RSA85771  Drymocallis glandulosa var. reflexa F. W. Peirson 1918-6-30 81 Los Angeles Summit of Mt. Wilson, San Gabriel Mountains. Comment
  RSA86728  Avena barbata F. W. Peirson 1918-04 1600 Los Angeles Altadena. Comment
  RSA86783  Vulpia microstachys var. pauciflora F. W. Peirson 1921-5-20 5364 Los Angeles Little Rock Creek, north slope of San Gabriel Mts. 960 Comment
  RSA86833  Rubus ursinus F. W. Peirson 1921-5-3 8653 Los Angeles North Fork of Millards Canyon 1067 Comment
  RSA86836  Rubus ursinus F. W. Peirson 1919-4-19 380 Los Angeles Pacoima Canyon, western end of San Gabriel Mountains. 610 Comment
  RSA86979  Myrica californica F. W. Peirson 1704 Los Angeles Santa Monica Canyon, Santa Monica Mts. Comment
  RSA87092  Lupinus bicolor F. W. Peirson 1919-5-10 413 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mountains. 838 Comment
  RSA87205  Lupinus elatus F. W. Peirson 1921-6-16 2438 Los Angeles Waterman ridge 2287 Comment
  RSA87220  Lupinus peirsonii F. W. Peirson 1926-4-27 6671 Los Angeles North side of Rock Creek Canyon, north slope of San Gabriel Mountains 1372 Comment
  RSA87328  Melica stricta var. albicaulis F. W. Peirson 1923-5-25 3524 Los Angeles Along stream on south side of canyon of Rock Creek, north slope of San Gabriel Mountains. 1296 Comment
  RSA88743  Carex hassei F. W. Peirson 1923-5-25 4269 Los Angeles along stream on south side of canyon of Rock Creek, San Gabriel Mountains. 1296 Comment
  RSA90182  Astragalus bicristatus F. W. Peirson 1922-7-6 3198 Los Angeles Big Pines, Swartout Valley Comment
  RSA91242  Vicia ludoviciana subsp. ludoviciana F. W. Peirson 1951-4-18 2011 Los Angeles Arroyo Seco, near Pasadena Comment
  SD70399  Lathyrus vestitus var. vestitus Frank W. Peirson 1920-5-16 2137 Los Angeles San Gabriel Mountains, Tujunga 472 Comment
  UC1076517  Heterotheca sessiliflora subsp. fastigiata Frank W. Peirson 1922-9-26 Los Angeles at California Street Bridge Arroyo Seco Comment
  UC908264  Linanthus concinnus Frank W. Peirson 1928-6-2 7931 Los Angeles South Fork Rock Creek San Gabriel Mts. 1981 Comment
  UC909133  Loeseliastrum matthewsii Frank W. Peirson 1921-5-19 952 Los Angeles Little Rock Creek 1036 Comment
  UCD64091  Digitaria sanguinalis F. W. Peirson 1917-9-1 1592 Los Angeles 1077 New York Avenue, Altadena. Comment
  CAS-BOT-BC17666  Carex alma Frank W. Peirson 1918-5-21 1636 Los Angeles San Gabriel Mountains. Arroyo Seco Canyon. Comment
  CAS-BOT-BC308392  Eriophyllum pringlei F. W. Peirson 1926-4-26 6656 Los Angeles About 1 mile east of Palmdale, southwestern Mojave Desert Comment
  CAS-BOT-BC343065  Madia gracilis F. W. Peirson 1920-6-10 2777 Los Angeles Maple Spring, trail to Mt. Lowe, San Gabriel Mts. 1066 Comment
  CAS-BOT-BC434370  Sidotheca trilobata Frank W. Peirson 1921-6-14 1783 Los Angeles Tujunga Canyon, San Gabriel Mts. 1280 Comment
  JEPS11680  Orobanche parishii Frank W. Peirson 1919-5-10 416 Los Angeles San Gabriel Mts., Arraster Canyon, Arraster Creek 914 Comment
  JEPS2194  Phacelia cicutaria var. hispida F. W. Peirson 1918-6-1 161 Los Angeles Henninger Flats San Gabriel Mts. 868 Comment
  JEPS32343  Euthamia occidentalis Frank W. Peirson 4161 Los Angeles Santa Clara River near Saugus 350 Comment
  JEPS38338  Madia exigua F. W. Peirson 1918-5-26 238 Los Angeles Henninger Flats San Gabriel Canyon 868 Comment
  JEPS39870  Rumex fueginus F. W. Peirson 1921-6-19 2449 Los Angeles San Gabriel Mountains. Crystal Lake. North Fork San Gabriel Comment
  JEPS40829  Symphyotrichum lanceolatum var. hesperium Frank W. Peirson 1923-8-30 4020 Los Angeles Lone Pine Canon, at Clyde Ranch San Gabriel Mountains, Lone Pine Canon 1493 Comment
  JEPS44137  Centaurea melitensis Frank W. Peirson 1919-5-18 435 Los Angeles hills e of Monrovia Canyon; San Gabriel Mts. 457 Comment
  JEPS47135  Cuscuta subinclusa Frank W. Peirson 1918-6-28 150 Los Angeles e of Rubio Canyon 609 Comment
  JEPS48028  Sedum spathulifolium Frank W. Peirson 1919-5-14 428 Los Angeles West Fork Eaton Canyon San Gabriel Mountains, West Fork Eaton Canyon 990 Comment
  JEPS50919  Silene gallica Frank W. Peirson 1919-5-14 420 Los Angeles Eaton Canyon San Gabriel Mountains, Eaton Canyon 731 Comment
  JEPS50921  Silene multinervia Frank W. Peirson 1918-6-4 41 Los Angeles foothills e Rubio Canyon; foothills e of Rubio Canyon 609 Comment
  JEPS51799  Eschscholzia californica Frank W. Peirson 1919-2-12 319 Los Angeles Arroyo Seco San Gabriel Mts. 457 Comment
  JEPS53236  Athysanus pusillus Frank W. Peirson 1919-4-5 60 a Los Angeles Sierra Madre Trail to Mount Wilson; San Gabriel Mountains 762 Comment
  JEPS61153  Amsinckia intermedia Frank W. Peirson 1919-3-27 333 Los Angeles foot of Arroyo Seco Canyon; San Gabriel Mountains 381 Comment
  JEPS61529  Allium haematochiton Frank W. Peirson 1921-4-21 2401 Los Angeles Sycamore Flat to San Dimas Canyon; San Gabriel Mountains 792 Comment
  JEPS63349  Monardella linoides var. stricta Frank W. Peirson 1922-7-5 3160 Los Angeles near Swartout Valley (Le Montaine Creek, n of Big Pines); San Gabriel Mts. 2225 Comment
  JEPS68644  Malva nicaeensis F. W. Peirson 3356 Los Angeles streets of Claremont Claremont Comment
  JEPS9847  Castilleja miniata Frank W. Peirson 1920-9-14 2286 Los Angeles Coldwater Canyon; San Gabriel Mountains 2133 Comment
  PASA1317  Arenaria douglasii Frank W. Peirson 1923-5-21 Los Angeles Fish Canyon, San Gabriel Mts. 914 Comment
  PASA1488  Eriogonum pusillum Frank W. Peirson 1923-5-27 Los Angeles Pillett Creek, San Gabriel Mts. 1097 Comment
  PASA1801  Aster canescens Frank W. Peirson 1923-8-30 Los Angeles North of Big Pines Auto Camp 1310 Comment
  PASA1910  Godetia cylindrica Frank W. Peirson 1923-6-19 Los Angeles Boquet Canyon 1066 Comment
  PASA426  Rhamnus cuspidata Frank W. Peirson 1921-7-17 Los Angeles Prairie Fork of San Gabriel River 2011 Comment
  PASA596  Mirabilis laevis var. glutinosa Frank W. Peirson 1930-7-10 Los Angeles Big Rock Creek 1371 Comment
  PASA657  Lupinus densiflorus var. mcgregorii Frank W. Peirson 1923-6-27 Los Angeles Rock Creek, San Gabriel Mts. Comment
  POM11873  Limosella acaulis F. W. Peirson 1922-7-7 s.n. Los Angeles Swartout Valley, Wright's Ranch. 1845 Comment
  POM12544  Thlaspi arvense F. W. Peirson 1919-2-23 s.n. Los Angeles Henninger Flats. N of Pasadena. 869 Comment
  POM12575  Cyperus rotundus F. W. Peirson 1922-8-1 3265 Los Angeles Pasadena, High school grounds Comment
  POM18747  Chenopodium murale F. W. Peirson 1923-4-9 3481 Los Angeles San Clemente Island: Lemon Tank. Comment
  POM19150  Heliotropium curassavicum F. W. Peirson 1923-5-27 6891 Los Angeles Pallett Creek, San Gabriel Mts. Comment
  POM47666  Silene antirrhina F. W. Peirson 1921-6-19 2681 Los Angeles North Fork of San Gabriel River 1006 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
  POM9941  Allium peninsulare var. peninsulare F. W. Peirson 1919-7-1 509 Los Angeles Fish Canyon, San Gabriel Mountains 610 Comment
  RSA0017013  Rosa woodsii subsp. gratissima F. W. Peirson 1918-6-17 470 Los Angeles Rock Creek, northern base of San Gabriel Mountains. 1677 Comment
  RSA0019985  Bromus tectorum F. W. Peirson 1922-7-5 5363 Los Angeles Big Pines Camp, north side of San Gabriel Mountains 2104 Comment
  RSA0063155  Andropogon glomeratus var. scabriglumis F. W. Peirson 1918-10-16 1571 Los Angeles Near foot of Pacoima Canyon, west end of San Gabriel Mts. Comment
  RSA0063244  Heuchera elegans F. W. Peirson 1924-5-27 4639 Los Angeles San Gabriel Mountains. North slope, Strawberry Peak. 1753 Comment
  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
  RSA0121163  Eriastrum pluriflorum subsp. sherman-hoytiae F. W. Peirson 1927-5-7 7288 Los Angeles About 13 miles south of Munroc, NW Los Angeles Co. Comment
  RSA0123055  Eriastrum sapphirinum subsp. brevibracteatum F. W. Peirson 1922-7-7 4128 Los Angeles Sheep Creek. North base of San Gabriel Mountains. 1448 Comment
  RSA0128745  Boechera californica F. W. Peirson 1918-5-19 62 Los Angeles Near Dawn Station on trolley line to Mt. Lowe. Comment
  RSA424281  Plantago ovata var. insularis F. W. Peirson 1923-4-11 3427 Los Angeles Eagle Ranch, San Clemente Island. Comment
  RSA632116  Dudleya cymosa subsp. pumila F. W. Peirson 1932-6-26 877 Los Angeles San Gabriel Canyon 335 Comment
  RSA64804  Chenopodium fremontii F. W. Peirson 1923-8-31 4023 Los Angeles Blue Ridge, north slope of San Gabriel Mountains. 2591 Comment
  RSA65027  Silene multinervia F. W. Peirson 1925-4-23 5789 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA65221  Eriogonum maculatum F. W. Peirson 1927-5-7 7264 Los Angeles 4 miles east of Lancaster. Comment
  RSA65343  Atriplex truncata F. W. Peirson 1904-8-22 1819 Los Angeles Playa del Rey, coast of Los Angeles Co. Comment
  RSA65346  Atriplex watsonii F. W. Peirson 1923-4-11 3462 Los Angeles In canyon below farm buildings at Eagle Ranch, San Clemente Island Comment
  RSA65437  Calandrinia ciliata F. W. Peirson 1919-3-30 356 Los Angeles Tujunga Canyon, west end of San Gabriel Mts. Comment
  RSA65446B  Spraguea F. W. Peirson 1905-7-14 37 Los Angeles South of summit of Mt. San Antonio, San Gabriel Mountains Comment
  RSA65504  Minuartia douglasii F. W. Peirson 1920-6-10 5316 Los Angeles below Inspiration Point, Mt. Lowe. 1341 Comment
  RSA65829  Descurainia incana subsp. viscosa F. W. Peirson 1921-6-19 2467 Los Angeles Crystal Lake, North Fork San Gabriel River 1676 Comment
  RSA65921  Rumex crispus F. W. Peirson 1930-5-31 8913 Los Angeles Below Lovejoy Dam, Lovejoy Buttes, southwestern Mojave Desert. Comment
  RSA65973  Eriogonum baileyi F. W. Peirson 1921-11-11 2718 Los Angeles E shore of lake near the road to Antelope Valley Comment
  RSA66033  Eriogonum gracile var. gracile F. W. Peirson 1928-9-4 8184 Los Angeles East of Palmdale. Comment
  RSA66095  Tropidocarpum gracile F. W. Peirson 1923-4-10 3422 Los Angeles Grassy upland of summit plateau, San Clemente Island 457 Comment
  RSA66738  Eschscholzia caespitosa subsp. caespitosa F. W. Peirson 1921-7-16 2503 Los Angeles East fork of San Gabriel River. 1372 Comment
  RSA67160  Galium nuttallii subsp. nuttallii F. W. Peirson 1919-3-11 2653 Los Angeles Small Canyon east of Rubio Canyon south base of San Gabriel Mtns. at 1800 ft. 549 Comment
  RSA68968  Plantago major F. W. Peirson 462 Los Angeles Weed AT 1085 New York Drive, Altadena. Comment
  RSA69705  Mentzelia veatchiana F. W. Peirson 1932-4-17 9862 Los Angeles 2 miles northeast of Lovejoy Buttes, Mohave Desert 762 Comment
  RSA70157  Dichelostemma capitatum subsp. capitatum F. W. Peirson 1919-5-18 s.n. Los Angeles Hills east of Monrovia Canyon 457 Comment
  RSA70173  Allium fimbriatum var. fimbriatum F. W. Peirson 1926-5-6 6733 Los Angeles on open headland, about 1 mi. from Rock Creek on road to Los Angeles County Playgrounds. 1310 Comment
  RSA70196  Allium fimbriatum var. fimbriatum F. W. Peirson 1926-4-26 6661 Los Angeles 5 miles west of Rock Creek, Mohave Desert. Comment
  RSA70313  Juncus xiphioides F. W. Peirson 1921-5-20 2418 Los Angeles Little Rock Creek 1204 Comment
  RSA70316  Juncus xiphioides F. W. Peirson 1930-5-21 8916 Los Angeles Below Lovejoy Dam, southwest Mojave Desert. Comment
  RSA70397  Chamaesyce serpillifolia F. W. Peirson 1904-9-5 2035 Los Angeles La Canada Comment
  RSA70545  Euphorbia spathulata F. W. Peirson 1908-4-18 2037 Los Angeles Point Fermin Comment
  RSA70586  Sisyrinchium bellum Frank W. Peirson 1919-5-18 444 Los Angeles Monrovia Canyon. 518 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
  RSA71793  Saltugilia splendens subsp. grantii F. W. Peirson 1927-6-14 7345 Los Angeles San Antonio Canyon, San Gabriel Mountains. 823 Comment
  RSA72235  Camissonia palmeri F. W. Peirson 1926-5-8 6727 Los Angeles 12 miles E of Palmdale, Antelope Valley Comment
  RSA72293  Gilia angelensis F. W. Peirson 1919-3-30 919 Los Angeles Tujunga Canyon. West end of San Gabriel Mts. 427 Comment
  RSA72324  Gilia malior F. W. Peirson 1932-4-17 9861 Los Angeles 2 miles northeast of Lovejoy Buttes, Mohave Desert 762 Comment
  RSA73003  Leptosiphon aureus F. W. Peirson 1918-6-16 948 Los Angeles Summit of first grade up Mint Canyon, northwest base of San Gabriel Mts. 762 Comment
  RSA73006  Linanthus parryae F. W. Peirson 1917-5-13 945 Los Angeles West of Little Rock. Comment
  RSA73025  Linanthus parryae F. W. Peirson 1926-5-8 6729 Los Angeles Road to Los Angeles County playgrounds about 1/4 mile from Rock Creek north slope of San Gabriel Mtns. 1250 Comment
  RSA73301  Clarkia deflexa F. W. Peirson 1919-5-21 4703 Los Angeles Arroyo Seco, Pasadena. 534 Comment
  RSA73314  Oenothera rosea F. W. Peirson 1934-4-14 11144 Los Angeles Jannoch Nurseries, northwestern part of Pasadena Comment
  RSA74159  Phacelia tanacetifolia F. W. Peirson 1932-4-17 9855 Los Angeles Margin of Lovejoy Dam, Lovejoy Buttes, SW Mojave Desert. 762 Comment
  RSA74931  Phacelia distans F. W. Peirson 1932-4-17 9866 Los Angeles Below Lovejoy Dam, Lovejoy Buttes, SW Mojave Desert. 762 Comment
  RSA7495  Phacelia distans F. W. Peirson 1922-4-10 4121 Los Angeles 3-4 miles S of Seal Harbor, San Clemente Island. Comment
  RSA75867  Nemophila menziesii var. integrifolia F. W. Peirson 1920-5-1 166 Los Angeles Idle Hour Camp, Eaton Canyon. 732 Comment
  RSA77793  Ammannia coccinea F. W. Peirson 1918-08 2079 Los Angeles Long Beach Comment
  RSA77872  Pectocarya penicillata F. W. Peirson 1919-3-26 324 Los Angeles vacant lot on south side of New York Drive, east of Hill Ave., Altadena. Comment
  RSA79568  Cryptantha intermedia F. W. Peirson 1919-2-12 320 Los Angeles Hills west of Arroyo Seco, near Pasadena 427 Comment
  RSA79600  Cryptantha intermedia F. W. Peirson 1923-4-9 3423 Los Angeles About 3 miles SE of Wilson s Cove, San Clemente Island 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
  RSA80647  Boisduvalia glabella F. W. Peirson 1906-7-19 2083 Los Angeles Sink near Inglewood. Comment
  RSA82392  Salvia carduacea F. W. Peirson 1921-5-18 1059 Los Angeles Along railroad track, 3 miles east of Saugus. Comment
  RSA83929  Ranunculus californicus F. W. Peirson 1921-2-26 2675 Los Angeles Topango Canyon, Santa Monica Mts. 305 Comment
  RSA83967  Saxifraga californica F. W. Peirson s.n. Los Angeles Weed AT 1085 New York Drive, Altadena. Comment
  RSA84231  Monardella australis F. W. Peirson 1929-7-1 8445 Los Angeles Mt. Pacifico: upper part of trail, San Gabriel Mountains. 1982 Comment
  RSA84474  Ceratophyllum demersum F. W. Peirson 1921-6-19 2614 Los Angeles Crystal Lake, North Fork San Gabriel River 1676 Comment
  RSA85011  Adiantum aleuticum F. W. Peirson 1919-12-28 1522 Los Angeles Eaton Canyon, south base of San Gabriel Mts. 1066 Comment
  RSA85193  Sparganium erectum subsp. stoloniferum F. W. Peirson 1919-07 1534 Los Angeles Ballona Marsh. Comment
  RSA85791  Drymocallis glandulosa var. reflexa F. W. Peirson 1928-6-2 7936 Los Angeles Along trail up South Fork of Rock Creek, 1905 Comment
  RSA85795  Drymocallis glandulosa var. reflexa F. W. Peirson 1918-6-1 4276 Los Angeles Henniger's Flats, San Gabriel Mts 854 Comment
  RSA90175  Astragalus lentiginosus var. variabilis F. W. Peirson 1922-7-7 3194 Los Angeles Ranger's Cabin, Swartout Valley. 1799 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
  RSA90311  Lotus salsuginosus var. salsuginosus F. W. Peirson 1918-6-4 94 Los Angeles East of Rubio Canyon, south base of San Gabriel Mountains. 549 Comment
  RSA90322  Lotus humistratus F. W. Peirson 1919-5-11 406 Los Angeles Arraster [Arrastre] Creek, north slope of San Gabriel Mts. 854 Comment
  RSA90351  Lotus crassifolius var. crassifolius F. W. Peirson 1919-5-18 103 Los Angeles divide between fish canyon and Monrovia canyons 976 Comment
  RSA90367  Lotus heermannii F. W. Peirson 1918-5-21 99 Los Angeles Wet place near stream; Arroyo Seco, near Pasadena 518 Comment
  RSA90644  Hazardia squarrosa var. grindelioides F. W. Peirson 1918-10-26 227 Los Angeles Big Dalton Canyon, south base of San Gabriel Mts 732 Comment
  RSA91015  Trifolium wormskioldii F. W. Peirson 1930-5-31 8915 Los Angeles Below Lovejoy Dam. Lovejoy Buttes. SW Mojave Desert. Comment
  RSA91149  Euthamia occidentalis F. W. Peirson 1921-9-21 2585 Los Angeles Los Angeles River near Tropico, San Fernando Valley. Comment
  RSA91196  Lupinus formosus var. formosus F. W. Peirson 1919-5-10 4 Los Angeles Arraster Creek 915 Comment
  RSA91265  Lupinus longifolius F. W. Peirson 1920-5-14 2147 Los Angeles Lukens Peak, San Gabriel Mts, Los Angeles Count, Alt 3000-3500ft 915 Comment
  RSA91273  Isocoma menziesii var. vernonioides F. W. Peirson 1921-11-11 2596 Los Angeles Saugus at northwest base of San Gabriel Mtns. Comment
  RSA91296  Alnus rhombifolia F. W. Peirson 1924-8-23 5047 Los Angeles west fork of San Gabriel River 411 Comment
  RSA91310  Vicia americana F. W. Peirson 1908-4-18 2015 Los Angeles Point Fermin Comment
  RSA91353  Lupinus chamissonis F. W. Peirson 1922-1-5 2664 Los Angeles Hermosa Beach Comment
  RSA91690  Bromus diandrus F. W. Peirson 1924-5-27 4621 Los Angeles San Gabriel Mountains. North slope, Strawberry Peak. 1753 Comment
  RSA91760  Gnaphalium californicum F. W. Peirson 1918-2-12 2788 Los Angeles Field near foot of Lukens Trail Comment
  RSA92136  Eleocharis rostellata F. W. Peirson 1922-7-5 4264 Los Angeles Swartout Valley, 2 miles east of Big Pines north side of San Gabriel mtns. 1982 Comment
  RSA92163  Schoenoplectus californicus F. W. Peirson 1918-4-28 1612 Los Angeles Road east and south of El Monte. Comment
  RSA92191  Amblyopappus pusillus Mabel Peirson 1922-4-7 1392 Los Angeles San Pedro. Comment
  RSA92230  Madia minima F. W. Peirson 1921-6-14 2457 Los Angeles San Gabriel Mountains. Pine Flats, headwaters of Tujunga Creek. 1676 Comment
  RSA92266  Achyrachaena mollis F. W. Peirson 1921-4-10 1363 Los Angeles South base of San Gabriel Mtns. San Dimas Canyon. 426 Comment
  RSA92282  Layia glandulosa F. W. Peirson 1926-4-27 6667 Los Angeles San Gabriel Mountains. North side of San Gabriel Mountains, Rock Creek. 1296 Comment
  RSA92289  Layia glandulosa F. W. Peirson 1919-3-30 345 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains 427 Comment
  RSA92315  Poa secunda var. secunda F. W. Peirson 1918-6-1 2683 Los Angeles Eaton Canyon, south base of San Gabriel Mtns. Comment
  RSA92322  Poa secunda var. secunda F. W. Peirson 1920-5-9 5366 Los Angeles Summit of Mt. Wilson. 1753 Comment
  RSA92408  Bidens pilosa var. pilosa F. W. Peirson 1919-12-20 4236 Los Angeles foot of Eaton Canyon at bridge, base of San Gabriel Mts. Comment
  RSA92440  Poa annua F. W. Peirson 1918-04 1552 Los Angeles New York Drive, Altadena Comment
  RSA92633  Monolopia lanceolata F. W. Peirson 1903-3-28 1377 Los Angeles Benedict's Canyon, Santa Monica Mountains. Comment
  RSA92644  Salix lasiolepis F. W. Peirson 1919-2-9 317 Los Angeles Fish Canyon, south base of San Gabriel Mountains 457 Comment
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Dec 10 2014
  RSA92660  Eriophyllum confertiflorum F. W. Peirson 1919-2-12 239 Los Angeles Foot of hills, west of Arroyo Seco near Pasadena 426 Comment
  RSA92881  Anemopsis californica F. W. Peirson 1919-6-15 503 Los Angeles Rock Creek, north slope of San Gabriel Mountains. 1296 Comment
  RSA93285  Pentachaeta aurea F. W. Peirson 1222 Los Angeles Altadena. Comment
  RSA93679  Filago californica F. W. Peirson 1918-6-4 233 Los Angeles east of Rubio Canyon, south base of San Gabriel Mountains Comment
  RSA93685  Ambrosia psilostachya F. W. Peirson 1919-11-15 1318 Los Angeles East Villa St. near Allen St. Pasadena. Comment
  RSA93783  Aster greatae F. W. Peirson s.n. Los Angeles Benedicts Canyon, Santa Monica Mts Comment
  RSA94120  Brickellia californica F. W. Peirson 1921-10-22 2599 Los Angeles Head of Eaton Canyon, base of San Gabriel peak. 1646 Comment
  RSA94394  Chaenactis fremontii F. W. Peirson 1921-5-19 2409 Los Angeles Little Rock Creek: N slope of San Gabriel Mountains 960 Comment
  RSA94402  Chaenactis stevioides F. W. Peirson 1923-5-25 3522 Los Angeles along stream on south side of canyon of Rock Creek, San Gabriel Mountains. 1296 Comment
  RSA94577  Anthemis cotula F. W. Peirson 1920-6-13 2105 Los Angeles Weed at 1250 Holliston Ave., Altadena. Comment
  RSA94601  Anisocoma acaulis F. W. Peirson 1923-5-27 4316 Los Angeles Pallett Creek, tributary to Rock Creek, north slope of San Gabriel Mts. 1097 Comment
  RSA94809  Acourtia microcephala F. W. Peirson 1929-6-30 8419 Los Angeles San Gabriel Mtns. In open clearing on Aliso Creek. 1098 Comment
  RSA94810  Acourtia microcephala F. W. Peirson 1919-7-1 520 Los Angeles South base of San Gabriel Mtns, Fish Canyon. 457 Comment
  RSA94905  Cirsium occidentale var. occidentale F. W. Peirson 1923-4-12 3482 Los Angeles Wilson's Cove, San Clemente Island. 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
  RSA94920  Cirsium occidentale var. californicum F. W. Peirson 1921-7-15 2504 Los Angeles San Gabriel River 610 Comment
  RSA94954  Malacothrix saxatilis var. tenuifolia F. W. Peirson 1921-7-20 2118 Los Angeles San Gabriel River. 457 Comment
  RSA95007  Malacothrix glabrata F. W. Peirson 1925-4-23 5800 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA95081  Microseris douglasii subsp. platycarpha F. W. Peirson 1908-4-18 1464 Los Angeles Point Fermin. Comment
  RSA95092  Calycoseris parryi F. W. Peirson 1921-5-20 2765 Los Angeles Little Rock Creek, San Gabriel Mtns. 976 Comment
  RSA95120  Agoseris retrorsa F. W. Peirson 1919-5-14 2764 Los Angeles East trail to Mount Lowe. 1066 Comment
  RSA95123  Agoseris retrorsa F. W. Peirson 1918-6-10 252 Los Angeles west slope of San Gabriel Peak 1768 Comment
  RSA95223  Stephanomeria blairii F. W. Peirson 1923-4-9 3475 Los Angeles San Clemente Island: at Lemon Tank Comment
  RSA95288  Vitis girdiana F. W. Peirson 1951-1 741 Los Angeles Oak Knoll, south of Pasadena. Comment
  RSA95327  Malacothamnus fasciculatus F. W. Peirson 1918-10-26 114 Los Angeles Big Dalton Canyon, south base of San Gabriel Range. 762 Comment
  RSA95386  Sidalcea malviflora subsp. sparsifolia F. W. Peirson 1951-2-26 2064 Los Angeles Inglewood Comment
  RSA95394  Ceanothus megacarpus F. W. Peirson 4447 Los Angeles Laurel Canyon. Comment
  RSA97157  Lomatium dissectum var. multifidum F. W. Peirson 1929-6-30 8422 Los Angeles Aliso Creek at Tie Canyon 1357 Comment
  RSA97161  Lomatium dissectum var. multifidum F. W. Peirson 1922-7-6 3187 Los Angeles Swartout Valley region. Big Pines, north side of San Gabriel Mtns. 2073 Comment
  RSA97296  Garrya veatchii F. W. Peirson 1919-11-30 2723 Los Angeles South base of San Gabriel Mnts., Middle Eaton Canyon. 610 Comment
  RSA97353  Sanicula arguta F. W. Peirson 1919-3-27 336 Los Angeles Foot of trail to Lukens Peak 609 Comment
  RSA97377  Sanicula bipinnatifida F. W. Peirson s.n. Los Angeles hills near Shorb, Los Angeles Co. Comment
  RSA97397  Apiastrum angustifolium F. W. Peirson 1908-4-18 2095 Los Angeles Point Fermin Comment
  RSA97428  Arceuthobium occidentale F. W. Peirson 1921-11-12 4302 Los Angeles Collins Ranch, Liebre Mts. 1372 Comment
  RSA97432  Lomatium mohavense subsp. mohavense F. W. Peirson 1926-4-26 6655 -a Los Angeles about 1 mile east of Palmdale Comment
  RSA99341  Sambucus mexicana F. W. Peirson 1921-7-21 8650 Los Angeles Arraster Creek, San Gabriel Mountains. 945 Comment
  SD82795  Viola purpurea subsp. mohavensis F. W. Peirson 1919-5-10 745 Los Angeles Trail to Mt. Gleason, San Gabriel Mountains. 1735 Comment
  UC908992  Saltugilia splendens subsp. grantii Frank W. Peirson 1938-6-2 7933 Los Angeles South Fork Rock Cr San Gabriel Mts., S Fork Rock Cr 1981 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
  RSA70231  Allium bisceptrum F. W. Peirson 1914-8-22 1653 Madera Near Agnew s Pass, Sierra Nevada. Comment
  RSA72029  Polemonium occidentale F. W. Peirson 1914-8-15 902 Madera Devils Post Pile, Sierra Nevada 2287 Comment
  RSA91676  Carex athrostachya F. W. Peirson 1934-7-18 11267 Madera Pumice Flat; Middle Fork of San Joaquin River. 2317 Comment
  RSA94897  Arnica amplexicaulis F. W. Peirson 1934-7-18 11260 Madera At the foot of Rainbow Falls. Middle Fork of San Joaquin River. 2165 Comment
  RSA94898  Arnica amplexicaulis F. W. Peirson 1914-8-16 1417 Madera Minaret Creek, Sierra Nevada Comment
  POM175482  Sidalcea malviflora subsp. laciniata Mabel Peirson 1926-3-28 6528 Marin Marin County: Elk Valley Comment
  RSA100207  Lonicera involucrata F. W. Peirson 1936-7-15 11833 Marin Point Reyes. Comment
  RSA70886  Arctostaphylos nummularia var. sensitiva F. W. Peirson 1925-10-3 6453 Marin On south trail to Mt. Tamalpais. 305 Comment
  RSA71930  Collomia diversifolia F. W. Peirson 1912-07 914 Marin Mt. Tamalpais Comment
  RSA75429  Camissonia ovata Mabel Peirson 1926-3-28 6530 Marin Marin County: Elk Valley Comment
  RSA76978  Acer macrophyllum F. W. Peirson 1936-7-15 s.n. Marin Taylor Camp, road to Point Reyes Comment
  RSA77581  Myosotis latifolia F. W. Peirson 1926-3-28 6538 Marin Elk Valley. Comment
  RSA86940  Lithocarpus densiflorus var. densiflorus F. W. Peirson 1925-10-3 6477 Marin South side of Mt. Tamalpais. Comment
  POM175484  Hypericum concinnum Mabel Peirson 1926-5-31 2071 Marin Mt. Tamalpais Comment
  RSA0028541  Geranium molle Mabel Peirson 1926-3-28 6536 Marin Tennessee Cove. Comment
  RSA70161  Dichelostemma capitatum subsp. capitatum F. W. Peirson, Mabel Peirson 1926-4-1 6539 Marin 2 miles N of San Rafael. Comment
  RSA70273  Juncus effusus subsp. pacificus F. W. Peirson 1925-10-3 6454 Marin On north slope of Mt. Tamalpais. Comment
  RSA85293  Ranunculus muricatus Mabel Peirson 1926-3-28 6534 Marin Tennessee Cove. Comment
  RSA90282  Lathyrus vestitus subsp. bolanderi Mabel Peirson 1926-3-28 6531 Marin Elk Valley Comment
  RSA64720  Eriogonum wrightii var. subscaposum F. W. Peirson 1930-8-15 9230 Mariposa Crevicess of the glaciated slopes west of the lake; Lake Tenaya Region. 2515 Comment
  RSA65600  Pseudostellaria jamesiana F. W. Peirson 1927-8-6 7661 Mariposa Porcupine Flat 2439 Comment
  RSA68702  Lilium parvum Frank W. Peirson 1927-8-6 7666 Mariposa Porcupine Flat, Sierra Nevada 2439 Comment
  RSA69032  Dodecatheon alpinum subsp. majus F. W. Peirson 1927-8-6 7652 Mariposa wet depression near May Lake. 2820 Comment
  RSA80451  Mimulus moschatus var. longiflorus F. W. Peirson 1927-8-6 7651 Mariposa Near May Lake, Sierra Nevada. 2835 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
  UC511738  Dodecatheon alpinum Frank W. Peirson 1927-8-6 7652 Mariposa May Lake 2819 Comment
  PASA2753  Rosa californica F. W. Peirson 1921-6-27 Y 12 Mariposa Yosemite Valley, Sentinal Rock Comment
  PASA2756  Collinsia torreyi F. W. Peirson 1921-6-25 Y 4 Mariposa Near entrance of Little Yosemite, along Merced River Comment
  PASA2777  Gilia leptalea F. W. Peirson 1921-7-3 Y 71 Mariposa above Little Yosemite Comment
  PASA2778  Phacelia menziesii F. W. Peirson 1921-7-3 Y 72 Mariposa above Little Yosemite Comment
  PASA2803  Lupinus albicaulis F. W. Peirson 1921-7-8 Y 103 Mariposa Ten Lakes, above Ghost Lake Comment
  PASA2806  Mertensia sibirica F. W. Peirson 1921-7-9 Y 106 Mariposa Ten Lakes trail Comment
  PASA2812  Carum gairdneri F. W. Peirson 1921-7-9 Y 112 Mariposa Ten Lakes trail Comment
  PASA2819  Lupinus longipes F. W. Peirson 1921-6-27 Y 20 Mariposa Below Yosemite Falls Comment
  PASA2825  Cystopteris fragilis F. W. Peirson 1921-6-28 Y 26 Mariposa Tenaya Canyon Comment
  PASA2847  Ranunculus alismifolius var. alismellus F. W. Peirson 1921-7-1 Y 44 Mariposa marshes above Lake Merced Comment
  PASA2848  Viola purpurea F. W. Peirson 1921-7-1 Y 45 Mariposa above Merced Lake Comment
  PASA2852  Sedum obtusatum F. W. Peirson 1921-7-1 Y 50 Mariposa granite slopes below Lake Merced Comment
  PASA2859  Habenaria leucostachys F. W. Peirson 1921-7-3 Y 56 Mariposa marsh along Merced Lake Trail Comment
  RSA65551  Arenaria aculeata F. W. Peirson 1927-8-5 7645 Mariposa North end of Lake Tenaya, Sierra Nevada. Comment
  RSA91744  Muhlenbergia montana F. W. Peirson 1935-7-19 11535 Mariposa Glaciated region north of Lake Tenaya, Sierra Nevada. 2500 Comment
  RSA92663  Eriophyllum lanatum var. integrifolium F. W. Peirson 1927-8-5 7642 Mariposa North of Lake Tenaya, Sierra Nevada 2485 Comment
  RSA93833  Artemisia arctica subsp. arctica F. W. Peirson 1927-8-6 7662 Mariposa Porcupine Flat, Sierra Nevada 2439 Comment
  RSA94923  Cirsium andersonii F. W. Peirson 1927-8-7 7669 Mariposa Trail from Porcupine Flat to Yosemite Point, Sierra Nevada 2348 Comment
  CAS-BOT-BC400898  Hypericum anagalloides Frank W. Peirson 1925-8-10 6378 Mendocino Jug-Handle Creek Comment
  HSC2960  Allium dichlamydeum F. W. Peirson 1925-8-10 6398 Mendocino Jug Handle Creek, 6 miles N of Mendocino City Comment
  POM87057  Corethrogyne californica var. obovata F. W. Peirson 1925-8-10 6416 Mendocino 1 mile S of Albion Comment
  POM87058  Horkelia californica F. W. Peirson 1925-8-10 6415 Mendocino 1 mile S of Albion Comment
  RSA100284  Campanula californica F. W. Peirson 1925-8-10 6372 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA65603  Stellaria media F. W. Peirson 1925-8-10 6390 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
Read comments
Aug 14 2013
  RSA69212  Rhododendron macrophyllum F. W. Peirson 1923-7-7 3802 Mendocino 2 miles east of Mendocino City. Comment
  RSA69538  Chlorogalum pomeridianum var. pomeridianum Frank W. Peirson 1923-7-6 3677 Mendocino Indian Creek, southern Mendocino Co. Comment
  RSA69648  Goodyera oblongifolia Frank W. Peirson 1925-8-10 6397 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA70562  Vaccinium parvifolium F. W. Peirson 1923-7-7 3863 Mendocino Navarro River, 10 miles below Wendling Comment
  RSA75340  Phacelia bolanderi F. W. Peirson 1923-7-7 3815 Mendocino Navarro River. 8 miles below Wendling. Comment
  RSA77434  Angelica hendersonii F. W. Peirson 1925-8-10 6357 Mendocino Jug Handle Creek, 6 miles north of Mendocino City Comment
  RSA80379  Daucus pusillus F. W. Peirson 1925-8-10 6358 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA82200  Trichostema laxum F. W. Peirson 1932-7-6 10248 Mendocino Navarro River. Dimmick Memorial Park. Comment
  RSA87007  Myrica californica F. W. Peirson 1923-7-7 3703 Mendocino 2 miles east of Mendocino City. Comment
  RSA87450  Agrostis pallens F. W. Peirson 1941-7-23 13119 Mendocino Van Damme State Park. Near sea level. Comment
  SD87798  Dudleya farinosa Frank W. Peirson 1925-8-10 6371 Mendocino Jug Handle Creek. Comment
  UC501534  Sagina maxima subsp. crassicaulis Frank W. Peirson 1923-7-8 3720 Mendocino slope above inlet Jug-Handle Creek Comment
  UC501546  Nemophila heterophylla Frank W. Peirson 1926-4-1 6553 Mendocino 5 mi n Cloverdale; n of Cloverdale Comment
  UC501564  Dactylis glomerata Frank W. Peirson 1932-7-6 10253 Mendocino Jug-Handle Creek; above inlet Comment
  UC501630  Anaphalis margaritacea Frank W. Peirson 1925-8-9 6356 Mendocino 8 mi e, on Ukiah Road Mendocino Ciyt Comment
  CAS-BOT-BC311196  Heterotheca sessiliflora subsp. bolanderi Frank W. Peirson 1923-7-7 3891 Mendocino Near Little River Comment
  CAS-BOT-BC324002  Layia chrysanthemoides Frank W. Peirson 1926-4-1 6556 Mendocino Hopland Comment
  HSC4250  Spergularia rubra F. W. Peirson 1925-8-10 6409 Mendocino Grade down to stream, Albion Comment
  POM87070  Claytonia sibirica F. W. Peirson 1925-8-10 6403 Mendocino Jug Handle Creek, Mendocino County Comment
  RSA0074766  Sedum spathulifolium F. W. Peirson 1925-8-10 6396 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA0091271  Amsinckia spectabilis F. W. Peirson 1925-8-10 6373 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA100340  Triodanis biflora F. W. Peirson 1923-7-7 3870 Mendocino Navarro River, 10 miles below Wendling. Comment
  RSA71936  Collomia heterophylla F. W. Peirson 1923-7-7 3813 Mendocino Near bridge, Wendling. Comment
  RSA77189  Lavatera arborea F. W. Peirson 1941-7-23 13081 Mendocino Van Damme State Park Comment
  RSA77749  Viola ocellata F. W. Peirson 1925-8-10 6377 Mendocino Jug Handle Creek, about 0.5 miles from ocean; 6 miles north of Mendocino City. Comment
  RSA79451  Scrophularia californica F. W. Peirson 1941-7-23 s.n. Mendocino Van Damme State Park. Near sea level. 0 Comment
  RSA80429  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum F. W. Peirson 1923-7-7 3847 Mendocino About 3 miles east of Boonville. Comment
  RSA82551  Stachys albens F. W. Peirson 1925-8-10 6379 Mendocino Jug Handle Creek, 5 miles north of Mendocino City. Comment
  RSA84324  Tellima grandiflora F. W. Peirson 1923-7-7 3739 Mendocino Just below Wendling. Comment
  RSA84965  Ribes speciosum F. W. Peirson 692 Mendocino on dry bank along first main summit; between coast and Eel River. Comment
Read comments
Apr 1 2009
  RSA85862  Blechnum spicant F. W. Peirson 1923-7-7 3631 Mendocino 2 miles east of Mendocino City. Comment
  RSA91539  Cytisus scoparius F. W. Peirson 1925-8-10 6388 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA92078  Psilocarphus tenellus var. tenellus F. W. Peirson 1923-7-7 3895 Mendocino Boonville Comment
  RSA93164  Baccharis pilularis F. W. Peirson 1925-8-10 6407 Mendocino Sea bluffs 5 miles south of Mendocino City Comment
  RSA94878  Arnica discoidea F. W. Peirson 1923-7-7 3921 Mendocino 2 miles east of Mendocino City Comment
  RSA95040  Senecio sylvaticus F. W. Peirson 1925-8-9 6353 Mendocino Near Summit of Coast Range on road from Ukiah to Mendocino City Comment
  RSA95201  Sidalcea calycosa subsp. rhizomata F. W. Peirson 1923-7-7 3773 Mendocino 1 mile north of Navarro River Comment
  SD87747  Lathyrus vestitus var. ochropetalus Frank W. Peirson 1923-7-9 3626 Mendocino Coast road north of Westport Comment
  UC566864  Lilaeopsis occidentalis Frank W. Peirson 1923-7-8 3942 Mendocino 0.5 mi. n. mendocino City (Jug Handle Creek); Jug Handle Creek Comment
  CAS-BOT-BC14899  Crepis intermedia Frank Warrington Peirson 1926-6-25 6873 Modoc Cedarville Pass, Warner Mountains Comment
  RSA80247  Orthocarpus cuspidatus subsp. copelandii F. W. Peirson 1926-6-25 6871 Modoc Summit of grade, Cedarville Pass, Warner Mountains. Comment
  UCR66593  Navarretia intertexta F. W. Peirson 1926-6-25 6868 Modoc Cedarville Pass, Warner Mountains 1926 Comment
  CAS-BOT-BC15584  Antennaria geyeri Frank Warrington Peirson 1926-7-26 6909 Modoc NW of Canby. Comment
  PASA2638  Ranunculus cymbalaria Frank W. Peirson 1926-6-26 6906 Modoc Road from Alturas to Canby Comment
  POM98603  Arnica cordifolia F. W. Peirson 1926-6-25 s.n. Modoc Small side canyon 1 mile east of summit of Warner Mountains on Cedarville Road. Comment
  POM98606  Allium acuminatum F. W. Peirson 1926-6-25 6874 Modoc Cedarville Road, Warner Mountains. Comment
  RSA95254  Sidalcea glaucescens F. W. Peirson 6867 Modoc West slope of Warner Mts. on Cedarville Rd Comment
  CAS-BOT-BC118633  Carex raynoldsii Frank Warrington Peirson 1935-7-18 11707 Mono Slate Creek. 3017 Comment
  CAS-BOT-BC266660  Pedicularis crenulata Frank W. Peirson 1933-7-30 s.n. Mono Convict Creek 2148 Comment
  CAS-BOT-BC28290  Carex scopulorum var. bracteosa Frank W. Peirson 1935-8-4 11727 Mono Sonora Pass Region, ca 2 mi SE of Pass in wet location. Comment
  CAS-BOT-BC31414  Carex leporinella Frank W. Peirson 1934-7-15 11227 Mono Virginia Lakes Basin, cirque above Red Lake. 3200 Comment
  CAS-BOT-BC31865  Carex microptera Frank W. Peirson 1935-8-4 11726 Mono Sonora Pass Region, ca 2 mi SE of Pass in wet location. 2621 Comment
  CAS-BOT-BC74814  Rorippa palustris var. palustris Frank W. Peirson 1933-7-28 10709 Mono Rock Creek. 1371 Comment
  CAS-BOT-BC89816  Lepidium montanum Frank W. Peirson 1933-7-29 10724 Mono On the floor of Crooked Creek Canyon. Owens River. 2042 Comment
  JEPS19738  Sphaeromeria potentilloides var. nitrophila Frank W. Peirson 1938-7-8 12437 Mono along U.S. 395 near the Gorge; Hot Creek Region, Region of Fales Hot Springs 2194 Comment
  JEPS54764  Astragalus newberryi var. newberryi Frank W. Peirson 1938-7-8 12442 Mono near windmill (Hot Creek Region); Hot Creek Region 2133 Comment
  LA95097  Mimulus nanus var. mephiticus Frank W. Peirson; 1925-7-26 6095 Mono N of Mammoth, between Deadman Creek and June Lake 2377 Comment
  PASA2167  Brickellia oblongifolia var. linifolia Frank W. Peirson 1927-7-25 Mono Convict Lake 2316 Comment
  POM203895  Crepis nana subsp. ramosa F. W. Peirson 1934-7-15 11202 Mono Cirque above Red Lake, Virginia Lakes Basin 3232 Comment
  POM87018  Lappula occidentalis var. occidentalis F. W. Peirson 1925-6-25 6048 Mono Rock Creek, Volcanic Tableland. 2073 Comment
  RSA458894  Saxifraga californica F. W. Peirson 1935-7-18 11526 Mono At the Old Saw Mill Auto Camp. Slate Creek. 3018 Comment
  RSA65106  Eriogonum esmeraldense var. esmeraldense F. W. Peirson 1914-8-25 1739 Mono Northern part of volcanic tableland. Crooked Creek. 2043 Comment
  RSA65837  Descurainia incana subsp. incisa F. W. Peirson 1925-6-27 6121 Mono West end of Gem Lake. Sierra Nevada. 2774 Comment
  RSA65948  Eriogonum umbellatum var. nevadense F. W. Peirson 1934-7-10 11171 Mono rocky location near Cooney Lake, Virginia Lakes Basin, Sierra Nevada. 3140 Comment
  RSA66102  Cardamine breweri F. W. Peirson 1935-8-4 11662 Mono East slope of main range, ca. 1.5 miles S of Sonora Pass. 2835 Comment
  RSA66256  Arabis lemmonii F. W. Peirson 1934-7-12 11195 Mono Pass at upper basin s head; Virginia Lakes Basin. Comment
  RSA66591  Phoenicaulis cheiranthoides F. W. Peirson 1934-7-12 11192 Mono Virginia Lakes Basin. Flowering specimen from pass at head of upper basin. Fruiting specimen from Blue Lake. 3384 Comment
  RSA68344  Lepidium montanum var. canescens F. W. Peirson 1933-7-29 10724 Mono Floor of Crooked Creek Canyon and at foots of its walls; Owens River. 2043 Comment
  RSA69219  Cassiope mertensiana subsp. californica F. W. Peirson 1925-6-27 6126 Mono Rush Creek, Sierra Nevada. 2927 Comment
  RSA69551  Mentzelia torreyi F. W. Peirson 1914-8-25 752 Mono Crooked Creek, Northern part of Volcanic Tableland Comment
Read comments
Jan 7 2016
  RSA70028  Sarcobatus vermiculatus F. W. Peirson 1930-8-12 9194 Mono North shore of Mono Lake 1966 Comment
  RSA75415  Oenothera deltoides subsp. piperi F. W. Peirson 1925-6-29 6161 Mono Cris Flat. W fork of Walker River. Comment
  RSA77796  Lappula redowskii F. W. Peirson 1914-8-25 1005 Mono Northern part of Volcanic Tableland, Crooked Creek. 2058 Comment
  RSA77885  Tiquilia nuttallii F. W. Peirson 1933-7-29 10721 Mono Along foot of canyon walls of Crooked Creek, Owens River. 2043 Comment
  RSA78519  Carex fissuricola F. W. Peirson 1937-7-30 13606 Mono Lundy. 2470 Comment
  RSA78521  Carex exserta F. W. Peirson 1937-7-30 13608 Mono Lundy. 2470 Comment
  RSA80119  Mimulus nanus var. mephiticus F. W. Peirson 1933-7-31 10756 Mono Mono Craters. 2287 Comment
  RSA82259  Castilleja linariifolia F. W. Peirson 1934-7-14 11224 Mono East of Blue Lake, Virginia Lakes Basin. East slope of Sierra Nevada. 3018 Comment
  RSA83951  Saxifraga oregana F. W. Peirson 1935-8-4 11655 Mono Along east slope of main range, ca. 1.5 miles east of Sonora Pass, Sierra Nevada. 2835 Comment
  RSA84439  Anemone drummondii F. W. Peirson 1934-7-13 11204 Mono In cirque above Red Lake, Virginia Lakes Basin, Sierra Nevada 3232 Comment
  RSA84483  Aconitum columbianum var. columbianum F. W. Peirson 1935-8-4 11650 Mono About 2 miles southeast of Sonora Pass 2622 Comment
  RSA84984  Potamogeton praelongus F. W. Peirson 1934-7-16 11245 Mono In a lake near the Virginia Lakes Resort, east slope of Sierra Nevada. 2988 Comment
  RSA86292  Ivesia saxosa F. W. Peirson 1933-7-28 10719 Mono low hill south-east of summit of Sherman Grade. 1951 Comment
  RSA87223  Lupinus pratensis F. W. Peirson 1925-6-25 6066 Mono Rock Creek, Sierra Nevada. 2073 Comment
  RSA87409  Lupinus lyallii var. villosus F. W. Peirson 1932-7-23 10377 Mono East slope of Sonora Pass. 2591 Comment
  RSA87416  Lupinus polyphyllus subsp. superbus F. W. Peirson 1934-7-11 11179 Mono From Moat Lake, Virginia Lakes Basin. 3110 Comment
  RSA88764  Carex douglasii F. W. Peirson 1925-6-26 6104 Mono Silver Lake. 2195 Comment
  RSA88781  Carex scopulorum var. bracteosa F. W. Peirson 1935-8-4 11727 Mono Mono County: About 2 miles southeast of Sonora Pass 2622 Comment
  SBBG28926  Plagiobothrys hispidulus F. W. Peirson 1925-6-29 6160 Mono Chris Flat, near W fork of Walker River Comment
  SBBG29826  Stellaria longipes F. W. Peirson 1925-6-28 6133 Mono Reverse Crk 2286 Comment
  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
  SD87595  Lappula occidentalis Frank W. Peirson 1925-6-25 6048 Mono Rock Creek 2075 Comment
  SD87804  Erigeron coulteri Frank W. Peirson 1925-6-28 6143 Mono Reverse Creek, Silver Lake Region 2190 Comment
  SEINET210457  Claytonia nevadensis F. W. Peirson 1934-7-15 11231 Mono Virginia Lakes Basin Sierra Nevada 3170 Comment
  UC483084  Salix jepsonii Frank W. Peirson 1932-7-22 10374 Mono along Robinson Creek below Barney Lake; Twin Lake Basin 2438 Comment
  UC501581  Astragalus canadensis var. brevidens Frank W. Peirson 1932-7-22 10360 Mono from Bridgeport (Twin Lake Basin, at the lower end of the upper lake); Twin Lake Basin, from Bridgeport 2133 Comment
  UC570565  Lewisia pygmaea Frank W. Peirson 1935-7-18 11532 Mono Slate Creek 3108 Comment
  UC595143  Calyptridium roseum Frank W. Peirson 1938-7-8 12433 Mono Hot Creek Region, near the Gorge Hot Creek Region 2194 Comment
  UC599192  Astragalus lemmonii Frank W. Peirson 1938-7-8 12614 Mono near windmill (Hot Creek Region); Hot Creek Region 2133 Comment
  UC599240  Sporobolus airoides Frank W. Peirson 1938-7-10 12464 Mono 18 mi. s. Benton Station 1371 Comment
  CAS-BOT-BC13298  Agoseris parviflora Frank W. Peirson 1925-6-26 6096 Mono North of Deadman Creek (near Mammoth) 2438 Comment
  CAS-BOT-BC18562  Carex abrupta Frank W. Peirson 1934-7-8 11166 Mono Owens River. Along the river road near the foot of Whisky Creek. 2042 Comment
  CAS-BOT-BC414167  Polygonum aviculare subsp. buxiforme Frank W. Peirson 1927-7-28 7577 Mono Mono Lake aet Mono Inn 1958 Comment
  JEPS27173  Caulanthus pilosus Frank W. Peirson 1938-7-9 Mono 1 1/2 mi sw Benton; sw of Benton 1950 Comment
  JEPS3068  Hesperochiron californicus Frank W. Peirson 1938-7-8 12441 Mono near windmill in low valley like depression Hot Creek Region 2133 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
  JEPS58005  Oxytheca dendroidea subsp. dendroidea Frank W. Peirson 1925-6-25 6038 Mono grade up Volcanic Tableland Volcanic Tableland Grade 1524 Comment
  JEPS63384  Monardella odoratissima subsp. glauca Frank W. Peirson 1934-7-16 Mono Blue Lake Virginia Lakes Basin 3017 Comment
  POM146796  Eriogonum spergulinum var. reddingianum F. W. Peirson 1927-7-26 s.n. Mono Volcanic Mountains between Deadman Creek and June Lake 2439 Comment
  POM203398  Arabis puberula F. W. Peirson 1934-7-10 11175 Mono Near Cooney Lake, Virginia Lakes Basin. 3140 Comment
  POM203741  Ivesia saxosa F. W. Peirson 1934-7-8 10719 Mono Along summit of grade on Sherwin Hill 1951 Comment
  POM203743  Chorizanthe brevicornu var. spathulata F. W. Peirson 1934-7-8 s.n. Mono Owens River, about Whisky Creek 2043 Comment
  POM87151  Oxytheca dendroidea F. W. Peirson 1925-6-25 6038 Mono Grade up Volcanic Tablelands Comment
  RSA0004930  Eriogonum ampullaceum F. W. Peirson 1933-7-29 10740 Mono Dry hill slopes about Whiskey Creek, Owens River. 2043 Comment
  RSA0006796  Astragalus lentiginosus var. ineptus F. W. Peirson 1933-7-29 10743 Mono Owens River, along Hilton Creek. 2043 Comment
  RSA0121630  Mentzelia monoensis F. W. Peirson 1927-7-26 7558 Mono Volcanic mountains between Deadman Creek and June Lake. 2409 Comment
  RSA33259  Pyrrocoma lanceolata F. W. Peirson 1914-8-25 1243 Mono Northern part of Volcanic Tableland, Crooked Creek. Comment
  RSA65404  Cistanthe rosea F. W. Peirson 1938-7-8 12433 Mono Near the Hot creek Gorge, Ownes Valley 2195 Comment
  RSA65912  Eriogonum nidularium F. W. Peirson 1914-8-26 1742 Mono Volcanic Tableland east of Long Valley Comment
  RSA66768  Arabis divaricarpa F. W. Peirson 1937-7-31 12152 Mono Mill Creek (Lundy Canyon). 2470 Comment
  RSA66823  Thelypodium crispum F. W. Peirson 1933-7-29 10722 Mono Crooked Creek Canyon, Owens Valley 2043 Comment
  RSA67163  Galium trifidum var. pusillum F. W. Peirson 1927-7-29 7600 Mono Saddlebag Creek. Sierra Nevada. 3201 Comment
  RSA69438  Frasera puberulenta F. W. Peirson 1927-7-26 7560 Mono Between Deadman Creek and June Lake. 2439 Comment
  RSA69619  Juncus chlorocephalus F. W. Peirson 1932-7-23 10391 Mono East side of Sonora Pass. 2622 Comment
  RSA70265  Juncus macrandrus F. W. Peirson 1930-8-12 9183 Mono Mono Lake, back of lake shore 1966 Comment
  RSA70594  Iris missouriensis Frank W. Peirson 1925-6-25 6057 Mono [Lower] Rock Creek, Sierra Nevada 2073 Comment
  RSA72635  Wyethia mollis F. W. Peirson 1937-7-30 12144 Mono Mill Creek (Lundy Canyon). 2470 Comment
  RSA73294  Linanthus pungens subsp. pulchriflorus F. W. Peirson 1934-7-10 11174 Mono Along shore of Blue Lake, Virginia Lakes Basin, Sierra Nevada 3018 Comment
  RSA74720  Nama densa F. W. Peirson 1938-7-8 12421 Mono Sherwin Grade. 1890 Comment
  RSA74723  Nama aretioides F. W. Peirson 1938-7-8 s.n. Mono Sherwin Grade. 1890 Comment
  RSA74788  Phacelia ramosissima var. eremophila F. W. Peirson 1933-7-31 10754 Mono Mono Craters. 2287 Comment
  RSA74855  Phacelia heterophylla subsp. virgata F. W. Peirson 1927-7-27 7570 Mono At north end of Silver Lake. 2256 Comment
  RSA75343  Phacelia bicolor F. W. Peirson 1927-7-26 7565 Mono East of Gull Lake. 2317 Comment
  RSA75346  Phacelia bicolor F. W. Peirson 1938-7-9 12446 Mono Along the east base of Mono Craters. 2134 Comment
  RSA75364  Camissonia boothii subsp. desertorum F. W. Peirson 1914-8-26 794 Mono Volcanic Tableland, Owens Valley Comment
  RSA78518  Carex utriculata F. W. Peirson 1937-7-31 13605 Mono Lundy. 2470 Comment
  RSA79804  Penstemon newberryi subsp. newberryi F. W. Peirson 1925-6-27 6129 Mono Rush Creek. 2363 Comment
  RSA80372  Solanum umbelliferum F. W. Peirson 1932-7-22 10369 Mono Steep slope below Barney Lake, along Robinson Creek, Twin Lake Basin. 2378 Comment
  RSA82247  Castilleja miniata F. W. Peirson 1927-7-27 7467 Mono West of north end of Silver Lake. 2226 Comment
  RSA82248  Castilleja miniata F. W. Peirson 1927-7-25 7549 Mono Convict Creek at road crossings. 2149 Comment
  RSA85541  Cheilanthes gracillima F. W. Peirson 1937-7-21 12153 Mono Mill Creek, Lundy Canyon 2591 Comment
  RSA86681  Cercocarpus ledifolius F. W. Peirson 1930-8-13 9210 Mono Levining Grade E slope of Sierra Nevada. 2591 Comment
  RSA90191  Astragalus casei F. W. Peirson 1930-8-12 9188 Mono Just back of willows on shore of Mono Lake. 1966 Comment
  RSA90731  Astragalus canadensis var. brevidens F. W. Peirson 1932-7-22 10360 Mono Lower end of the Upper Lake, Twin Lakes Basin. 2165 Comment
  RSA91038  Erigeron coulteri F. W. Peirson 1937-7-30 12138 Mono Mill Creek (Lundy Canyon) 2470 Comment
  RSA91067  Phacelia humilis var. humilis F. W. Peirson 1930-8-12 9190 Mono Shore of Mono Lake. 1966 Comment
  RSA91135  Trifolium monanthum subsp. monanthum F. W. Peirson 1927-7-29 7590 Mono Slate Creek, east slope of Sierra Nevada. 3018 Comment
  RSA91356  Lupinus caudatus F. W. Peirson 1938-7-8 12438 Mono Near the windmill, Hot Creek region. 2134 Comment
  RSA91670  Hesperostipa comata subsp. comata F. W. Peirson 1938-7-8 s.n. Mono Between Owens River and the boulevard in the vicinity of Whiskey Creek. 2073 Comment
  RSA91841  Sporobolus airoides F. W. Peirson 1938-7-10 12464 Mono Bottom of Owens Valley, 18 miles south of Benton Station 1372 Comment
  RSA91845  Spartina gracilis F. W. Peirson 1937-8-1 12223 Mono Long Valley, Hot Creek Basin 2104 Comment
  RSA92133  Eleocharis palustris F. W. Peirson 1925-6-25 6083 Mono [Lower] Rock Creek, Sierra Nevada 2073 Comment
  RSA93240  Aster occidentalis var. fremontii F. W. Peirson 1934-7-16 11243 Mono West of Blue Lake, Virginia Lakes Basin 3018 Comment
  RSA93664  Solidago spectabilis F. W. Peirson 1930-8-12 9192 Mono Mono Lake 1966 Comment
  RSA93794  Aster eatonii F. W. Peirson 1930-8-12 9193 Mono NW corner of Mono Lake 1966 Comment
  RSA93866  Dugaldia hoopesii F. W. Peirson 1935-8-4 11652 Mono About 2 miles southeast of Sonora Pass, Sierra Nevada. 2622 Comment
  RSA93908  Iva nevadensis F. W. Peirson 1934-7-8 11157 Mono Side road labeled 'To the Gorge' north of Mono-Inyo Co. line, but below the foot of the Sherwin Grade. Comment
  RSA93972  Pyrrocoma racemosa var. paniculata F. W. Peirson 1937-8-1 12162 Mono In Long Valley, Hot Creek Region. 2104 Comment
  RSA94413  Artemisia ludoviciana subsp. ludoviciana F. W. Peirson 1930-8-12 9191 Mono Yard of old ranch house along north shore of Mono Lake 1966 Comment
  RSA94700  Senecio werneriifolius F. W. Peirson 1934-7-11 11180 Mono Above Moat Lake, Virginia Lakes Basin, Sierra Nevada. 3171 Comment
  RSA94747  Senecio canus F. W. Peirson 1934-7-16 11256 Mono Near Blue Lake, Virginia Lakes Basin. 3018 Comment
  RSA94816  Lactuca tatarica var. pulchella F. W. Peirson 1927-7-28 7584 Mono Near margin of Mono Lake. Comment
  RSA94988  Agoseris parviflora F. W. Peirson 1934-7-14 11218 Mono East of Blue Lake, Virginia Lakes Basin. East slope of Sierra Nevada. 3018 Comment
  RSA95101  Crepis acuminata F. W. Peirson 1934-7-16 11238 Mono West end of Blue Lake, Virginia Lakes Basin 3018 Comment
  RSA95214  Stephanomeria exigua subsp. coronaria F. W. Peirson 1937-8-1 12158 Mono Long Valley, Hot Creek region. 2104 Comment
  RSA97324  Pteryxia terebinthina F. W. Peirson 1925-6-30 6165 Mono West fork of Walker River below Cris Flat. Comment
  SD87537  Eriogonum nidularium Frank W. Peirson 1925-6-25 6039 Mono Grade up Volcanic Tablelands Comment
  SD87620  Erigeron algidus Frank W. Peirson 1934-7-16 11244 Mono Virginia Lakes Basin 3020 Comment
  SEINET208189  Allium bisceptrum F. W. Peirson 1925-6-28 6144 Mono Reverse Creek, Sierra Nevada. 2256 Comment
  UC501464  Linanthus ciliatus Frank W. Peirson 10381 Mono e slope Sonora Pass 2590 Comment
  UC511729  Astragalus lentiginosus var. albifolius Frank W. Peirson 1933-7-31 10758 Mono n shore Mono Lake; n shore Mono Lake 1965 Comment
  UC511737  Collomia linearis Frank W. Peirson 1933-7-29 10742 Mono in moist ground along Hilton Creek; Owens River 2042 Comment
  UC511767  Chamaesaracha nana Frank W. Peirson 1933-7-30 10752 Mono along Boulevard near McGee Creek crossing (between Tom's Place and Convict Creek) 2072 Comment
  UC511801  Eremothera boothii subsp. boothii Frank W. Peirson 1933-8-1 10763 Mono terrace near black pumice hill (n shore of lake); Mono Lake 1965 Comment
  UC511805  Pleiacanthus spinosus Frank W. Peirson 1933-8-1 Mono n shore Mono Lake 1965 Comment
  UC511902  Eriogonum baileyi var. baileyi Frank W. Peirson 1933-7-29 10747 Mono along road from the Boulevard to the Owens River Owens River 2042 Comment
  UC599264  Leptodactylon pungens Frank W. Peirson 1938-7-8 12430 Mono between Owens River and the Boulevard in the vicinity Whisky Creek; between Owens River and boulevard vicinity of Whisky Creek 2072 Comment
  CAS-BOT-BC64554  Armeria maritima subsp. californica Frank W. Peirson 1923-6-27 3804 Monterey Monterey. Comment
  PASA413  Coreopsis bigelovii Frank W. Peirson 1925-3-24 Monterey Coalinga to Parkfield, Inner Coast Ranges 914 Comment
  POM175468  Hypericum androsaemum F. W. Peirson 1923-6-27 3783 Monterey Coast, Monterey Peninsula. Comment
  RSA65252  Chorizanthe pungens var. pungens F. W. Peirson 1923-6-27 3707 Monterey Monterey Comment
  RSA65659  Cardionema ramosissimum F. W. Peirson 1912-6-27 1863 a Monterey Monterey. Comment
  RSA80392  Eryngium armatum F. W. Peirson 1923-6-26 3954 Monterey 3 miles up the Salinas road from Monterey Comment
  RSA85217  Horkelia californica F. W. Peirson 1923-6-27 4275 Monterey Southward from Pacific Grove Comment
  UC501485  Geranium dissectum Frank W. Peirson 1923-6-27 3757 Monterey near Notrey's Landing; Redwood Creek Comment
  CAS-BOT-BC367561  Lasthenia minor Frank W. Peirson 1923-6-27 3916 Monterey Notrey's Landing, Coast, south of Carmel Comment
  JEPS16588  Heuchera micrantha var. diversifolia Frank W. Peirson 1937-7-19 12096 Monterey Pine Ridge trail from public camp grounds Big Sur River 304 Comment
  RSA73048  Leptosiphon androsaceus F. W. Peirson 1925-3-24 5655 Monterey Road from Coalinga to Parkfield 915 Comment
  RSA77507  Aralia californica F. W. Peirson s.n. Monterey Monterey. Comment
  RSA80705  Hypericum androsaemum F. W. Peirson 1923-6-27 3783 Monterey along coast, Monterey Peninula Comment
  RSA85029  Polystichum dudleyi F. W. Peirson 1923-6-27 3634 Monterey Redwood Creek near Notley's Landing Comment
  RSA87477  Lupinus albifrons var. douglasii F. W. Peirson 1923-6-27 3612 Monterey Along coast road southward from Monterey, at Notrys Landing. Comment
  RSA90718  Astragalus nuttallii F. W. Peirson 1923-6-27 3967 Monterey Southward from Pacific Grove Comment
  RSA91324  Lupinus arboreus var. arboreus F. W. Peirson 1912-7-27 528 Monterey Monterey. Comment
  RSA91486  Isolepis cernua F. W. Peirson 1923-6-26 3659 Monterey About 3 miles from Monterey on road to Salinas. Comment
  RSA91976  Hierochloe occidentalis F. W. Peirson 1937-7-19 12214 Monterey Pine Ridge Trail from the Public Campground, Big Sur River 30 Comment
  RSA92995  Lasthenia minor F. W. Peirson 1923-6-27 3916 Monterey Notrey's [Notley's] Landing. Comment
  RSA94187  Hemizonia corymbosa subsp. macrocephala F. W. Peirson 1923-6-27 3902 Monterey Coast near Pacific Grove Comment
  RSA94374  Madia exigua F. W. Peirson 1923-6-26 4150 Monterey 3 miles up the Salinas Road, Monterey Comment
  RSA98250  Oenanthe sarmentosa F. W. Peirson 1923-6-17 4055 Monterey 17-mile Drive, Monterey Peninsula Comment
  SBBG28985  Rhamnus ilicifolia F. W. Peirson 1937-7-19 12087 Monterey Big Sur River 228 Comment
  RSA92291  Eriophyllum lanatum var. achilleoides F. W. Peirson 1928-7-4 7953 Napa Summit of Mt. St. Helena grade Comment
  RSA80103  Mimulus torreyi F. W. Peirson 1931-8-10 9554 Nevada Along boulevard west of Donner Lake, Sierra Nevada. 1829 Comment
  RSA95226  Stephanomeria lactucina F. W. Peirson 1931-8-10 9552 Nevada W end of Donner Lake, Sierra Nevada. 1829 Comment
  PASA2267  Ribes roezlii Frank W. Peirson 1923-5-6 Orange Santiago Peak 1645 Comment
  POM254669  Atriplex watsonii F. W. Peirson 1924-2-10 4533 Orange Corona Del Mar Comment
  POM47660  Galium porrigens F. W. Peirson 1924-5-31 4665 Orange 5 miles southeast of Laguna Beach Comment
  RSA66150  Lepidium lasiocarpum F. W. Peirson 1923-3-25 3363 Orange Aliso Creek near Laguna Beach Comment
  RSA69411  Delphinium parryi F. W. Peirson 1925-4-11 5745 Orange 5 miles south of Laguna Beach. Comment
  RSA70038  Arthrocnemum subterminale F. W. Peirson 1924-8-29 5091 Orange Corona Del Mar Comment
  RSA70257  Nolina cismontana Frank W. Peirson 1923-5-5 3507 Orange Trabuco Canyon, Santa Ana Mountains 518 Comment
Read comments
Jan 6 2018
  RSA71016  Cressa truxillensis F. W. Peirson 1924-5-31 4647 Orange Laguna Canyon, near Laguna Beach. 106 Comment
  RSA72173  Epilobium ciliatum subsp. ciliatum F. W. Peirson 1924-5-31 4654 Orange Laguna Canyon, near Laguna Beach. 107 Comment
  RSA72176  Epilobium ciliatum subsp. ciliatum F. W. Peirson 1924-5-31 4653 Orange Laguna Canyon, near Laguna Beach. 107 Comment
  RSA72261  Camissonia cheiranthifolia subsp. suffruticosa F. W. Peirson 1924-5-31 4670 Orange 5 miles southeast of Laguna Beach. Comment
  RSA77337  Ceanothus tomentosus F. W. Peirson 1922-5-19 3050 Orange small canyon heading eastward from the Santa Ana River Canyon 122 Comment
  RSA79829  Keckiella antirrhinoides F. W. Peirson 1922-5-18 3027 Orange Santa Ana River. 122 Comment
  RSA79906  Solanum americanum F. W. Peirson 1924-2-9 4523 Orange Between Wintersberg and the sea. Comment
  RSA81007  Frankenia grandifolia var. campestris F. W. Peirson 1924-8-29 5072 Orange roadside 4 miles south of Santa Ana. Comment
  RSA82568  Stachys rigida subsp. quercetorum F. W. Peirson 1924-5-31 4657 Orange Open Canyon, Laguna Beach. 91 Comment
  RSA84993  Adiantum jordanii F. W. Peirson 1924-5-31 4666 Orange 5 miles SE of Laguna Beach. Comment
  RSA85051  Polypodium californicum F. W. Peirson 1919-11-8 1516 Orange South of Arch Beach, near Laguna Beach Comment
  RSA85935  Selaginella bigelovii Frank W. Peirson 1923-5-5 3490 Orange Trabuco Canyon, Santa Ana Mountains 518 Comment
  SD70409  Viola sheltonii Frank W. Peirson 1923-5-6 3496 Orange along trail from Trabuco Canyon. Santiago Peak 1676 Comment
  PASA1814  Corethrogyne filaginifolia Frank W. Peirson 1924-8-29 Orange 2 miles from Balboa on toad inland along creek Comment
  RSA0008381  Chaenactis glabriuscula var. orcuttiana F. W. Peirson 1924-5-31 4671 Orange 5 miles southeast of Laguna Beach. Comment
  RSA64787  Chenopodium murale F. W. Peirson 1924-2-10 5271 Orange Corona Del Mar. Comment
  RSA68629  Calochortus splendens Frank W. Peirson 1923-5-5 4097 Orange Divide 1 mile east of El Modena. Comment
  RSA70037  Salicornia virginica F. W. Peirson 1924-8-29 5081 Orange 2.5 miles from Balboa on road inland along creek. Comment
  RSA70218  Allium praecox F. W. Peirson 1923-3-18 4095 Orange Santa Ana River Canyon 122 Comment
  RSA79903  Physalis philadelphica F. W. Peirson 1924-10-19 5239 Orange Wintersberg Comment
  RSA80334  Hydrocotyle umbellata F. W. Peirson 1924-10-19 5237 Orange Wintersberg Comment
  RSA80422  Kickxia elatine F. W. Peirson 1927-9-25 7676 Orange in flats below Wintersberg. Comment
  RSA83330  Dudleya lanceolata F. W. Peirson 1924-6-1 4675 Orange Santa Ana River. 122 Comment
  RSA91276  Isocoma menziesii var. vernonioides F. W. Peirson 1919-11-8 1254 Orange South of Arch Beach, near Laguna Beach Comment
  RSA91618  Nassella lepida F. W. Peirson 1923-3-25 5362 Orange Aliso Creek, near Laguna Beach. Comment
  RSA92407  Bidens laevis F. W. Peirson 1924-10-19 5245 Orange Wintersberg. Comment
  RSA93352  Aster bernardinus F. W. Peirson 1924-8-29 5065 Orange roadside 4 miles south of Santa Ana. Comment
  RSA93359  Heterotheca sessiliflora subsp. echioides F. W. Peirson 1924-8-29 5086 Orange 2.5 miles from Balboa on road inland along creek. Comment
  RSA93934  Ambrosia acanthicarpa F. W. Peirson 1919-11-8 5275 Orange Road south of Arch Beach. Comment
  RSA94926  Cirsium arvense F. W. Peirson 1924-10-19 5248 Orange Wintersberg. Comment
  RSA95328  Malacothamnus fasciculatus F. W. Peirson 1923-3-25 3398 Orange Aliso Creek, Laguna Comment
  CAS-BOT-BC208839  Lupinus argenteus var. meionanthus Frank W. Peirson 1931-8-10 9551 Placer Lake Tahoe 1905 Comment
  CAS-BOT-BC115145  Carex vesicaria Frank Warrington Peirson 1926-6-21 6788 Plumas Open flat strip along shore of Lake, Lake Almanor. Comment
  CAS-BOT-BC313430  Hemizonella minima Frank W. Peirson 1926-6-21 6787 Plumas Lake Almanor Comment
  POM175522  Erythranthe pulsiferae F. W. Peirson 1926-6-21 6801 Plumas Lake Almanor. Comment
  RSA470065  Navarretia leptalea F. W. Peirson 1932-7-19 s.n. Plumas Along Feather River near Chester. 1463 Comment
  RSA95195  Sidalcea malviflora subsp. asprella F. W. Peirson 1926-6-21 6786 Plumas East slope of Sierra Nevada, Humboldt Road Comment
  CAS-BOT-BC106344  Brickellia atractyloides var. arguta Frank W. Peirson 1928-4-24 7900 Riverside Cottonwood Spring Comment
  CAS-BOT-BC326834  Peucephyllum schottii Frank W. Peirson 1919-4-13 4737 Riverside 1st canyon east of Palm Canyon, Colorado Desert Comment
  CAS-BOT-BC361118  Lasthenia microglossa Peirson 1919-4-14 s.n. Riverside Murray Canon 487 Comment
  CAS-BOT-BC407622  Gilia ochroleuca subsp. exilis Frank W. Peirson 1928-3-24 7725 Riverside Temescal Canyon, near auto camp 304 Comment
  CAS-BOT-BC70037  Cheilanthes covillei Frank W. Peirson 1922-4-10 s.n. Riverside Murray Canyon, Palm Springs Region 457 Comment
  JEPS35729  Eriogonum deflexum var. deflexum Frank W. Peirson 1928-11-30 Riverside foot of canyon below Shavers Well 0 Comment
  JEPS54762  Astragalus nuttallianus F. W. Peirson 1922-4-9 584 Riverside foot of Murray Canyon e base Mt. San Jacinto, Palm Sprs, Murray Canyon (Palm Sprs., e base Mt. San Jacinto) Comment
  PASA1116  Lotus subpinnatus Frank W. Peirson 1930-5-10 Riverside Hemet Plateau, along boulevard opposite March field 457 Comment
  PASA1246  Poa bigelovii Frank W. Peirson 1921-3-22 Riverside Murray Canyon 457 Comment
  PASA1624  Platystemon californicus Frank W. Peirson 1922-4-29 Riverside Field south of Lake Elsinore 377 Comment
  PASA1998  Amsinckia douglasiana Frank W. Peirson 1921-3-22 Riverside Murray Canyon, Palm Springs Region 396 Comment
  PASA2215  Eriophyllum multicaule Frank W. Peirson 1928-4-19 Riverside Hills north of Elsinore 457 Comment
  PASA2519  Ceanothus tomentosus Frank W. Peirson 1922-4-30 Riverside St John's Grade, bautista Creek 761 Comment
  PASA2724  Astragalus douglasii var. parishii Frank W. Peirson 1922-4-29 2955 Riverside Aguanga 609 Comment
  PASA303  Downingia immaculata Frank W. Peirson 1922-4-29 Riverside Field south of Lake Elsinore 380 Comment
  PASA352  Uropappus lindleyi Frank W. Peirson 1922-4-29 Riverside South of Lake Elsinore 380 Comment
  PASA395  Capsella elliptica Frank W. Peirson 1921-4-11 Riverside Murray Canyon, Palm Springs Region Comment
  PASA628  Juncus bufonius Frank W. Peirson 1922-4-29 Riverside South side Lake Elsinore Comment
  POM193461  Leptosiphon lemmonii F. W. Peirson 1929-5-4 8335 Riverside Summit of St John's grade 793 Comment
  POM317055  Lupinus bicolor subsp. microphyllus F. W. Peirson 1922-4-29 5224 Riverside South of Lake Elsinore. 381 Comment
  POM47633  Lotus argophyllus subsp. decorus F. W. Peirson 1919-4-13 s.n. Riverside Murray Canyon, Palm Springs region. Comment
  RSA409772  Cuscuta salina F. W. Peirson 1924-6-21 s.n. Riverside South of Elsinore Comment
  RSA498235  Astragalus lentiginosus var. coachellae F. W. Peirson 1920-2-17 s.n. Riverside Whitewater River, Colorado Desert, river at bridge. Comment
  RSA498671  Horkelia clevelandii F. W. Peirson 1924-7-28 5006 Riverside Pine Flats Camp 1799 Comment
  RSA62011  Justicia californica F. W. Peirson 1935-2-22 s.n. Riverside Deep Canyon, about 1000 ft.[west margin Sonoran Desert, Santa Rosa Mtns. -SDW] 305 Comment
  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
  RSA65148  Eriogonum fasciculatum var. polifolium F. W. Peirson 1919-4-14 1759 Riverside Murray Canyon, near Palm Springs. Comment
  RSA65200  Chorizanthe brevicornu var. brevicornu F. W. Peirson 1920-2-16 1775 Riverside East of Palm Springs. Comment
  RSA65259  Chorizanthe polygonoides var. longispina F. W. Peirson 1922-5-19 3025 Riverside 3 miles northeast of Murrieta. 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
  RSA65625  Elatine californica F. W. Peirson 1922-5-21 4109 Riverside Hemet Valley. [Hemet Valley = Garner Valley -SDW] 1338 Comment
  RSA65720  Claytonia parviflora subsp. utahensis F. W. Peirson 1921-3-22 2389 Riverside Murray Canyon near Palm Springs. 457 Comment
  RSA66277  Eschscholzia parishii F. W. Peirson 1922-4-9 2872 Riverside Murray Canyon, Palm Springs region 305 Comment
  RSA68622  Calochortus weedii var. weedii Frank W. Peirson 1920-6-22 2180 Riverside Grade south of Temecula River, going toward Dripping Spring 427 Comment
  RSA68710  Lilium parryi Frank W. Peirson 1924-7-27 5003 Riverside South side of Dark Canyon, San Jacinto Mountains. 2499 Comment
  RSA69621  Juncus acutus subsp. leopoldii F. W. Peirson 1921-3-20 2366 Riverside Palm Canyon, east base of San Jacinto Mountains 305 Comment
  RSA70350  Funastrum hirtellum F. W. Peirson 1922-4-9 4118 Riverside Palm Canyon Region, near Palm Springs. Comment
  RSA70377  Euphorbia palmeri F. W. Peirson 1922-5-21 4257 Riverside Southeast of Keene camp. San Jacinto mtns, 1463 Comment
  RSA70427  Ditaxis lanceolata F. W. Peirson 1921-3-23 2805 Riverside Deep Canyon Wash, 12 miles southeast of Palm Springs. 152 Comment
  RSA70462  Allium cratericola F. W. Peirson 1922-5-21 3069 Riverside Near Garner Ranch, Hemet Valley, San Jacinto Mountains 1372 Comment
  RSA70996  Cuscuta californica F. W. Peirson 1914-04 898 Riverside Whitewater at head of Coachella Valley. Comment
  RSA71009  Cuscuta salina F. W. Peirson 1924-6-21 4760 Riverside Along south end of Lake Elsinore 381 Comment
  RSA71010  Cuscuta californica F. W. Peirson 1921-4-13 2399 Riverside Deep Canyon; north base of Santa Rosa Mountains, Riverside. 152 Comment
  RSA71807  Gilia stellata F. W. Peirson 1920-2-16 2297 Riverside Foot of Alkali Canyon, southeast of Palm Canyon, east base of San Jacintos Mountains Comment
  RSA72193  Oenothera californica subsp. californica F. W. Peirson 1914-04 387 Riverside Beaumont, San Gorgonio Pass. Comment
  RSA73047  Leptosiphon androsaceus F. W. Peirson 1922-4-28 4472 Riverside Leach Canyon, near Elsinore 534 Comment
  RSA73683  Linanthus aureus F. W. Peirson 1928-4-23 7887 Riverside 2.5 miles below cottonwood Springs, Riverside County Comment
  RSA74148  Phacelia distans F. W. Peirson 1922-4-9 956 Riverside Lower part of Murray Canyon, near Palm Springs Comment
  RSA75404  Camissonia boothii subsp. condensata F. W. Peirson 1922-4-9 s.n. Riverside Palm Canyon Region, near Palm Springs. Comment
  RSA76953  Tetracoccus hallii F. W. Peirson 1928-4-24 7894 Riverside Cottonwood Springs, northern Colorado Desert Comment
  RSA77195  Eremalche rotundifolia F. W. Peirson 1921-04 2384 Riverside Deep Canyon Wash, south of Indio Comment
  RSA77718  Ceanothus greggii var. perplexans F. W. Peirson 1922-5-20 735 Riverside Hemet Valley, San Jacinto Mountains 1448 Comment
  RSA77843  Fagonia laevis F. W. Peirson 1920-2-16 2029 Riverside Palm Canyon stream below the canyon, Palm Springs. region Comment
  RSA77846  Callitriche marginata F. W. Peirson 1922-5-12 3067 Riverside South of Lake Elsinore. Comment
  RSA79959  Cryptantha micrantha var. lepida F. W. Peirson 1922-5-19 4483 Riverside San Jacinto River, San Jacinto Mtns. 1220 Comment
  RSA80248  Mohavea confertiflora F. W. Peirson 1917-4-1 1102 Riverside Along south edge of Colorado Desert embayment east of Palm Springs, above ''Garden of Eden'. Comment
  RSA82119  Orobanche cooperi subsp. cooperi F. W. Peirson 1930-3-29 8692 Riverside At foot of Painted Canyon, lower Coachella Valley. Comment
  RSA83412  Monardella australis subsp. australis F. W. Peirson 1924-7-27 4993 Riverside Near lower part of Deer Springs, Dark Canyon, San Jacinto Mts. 2591 Comment
  RSA84261  Azolla filiculoides Frank W. Peirson 1922-4-30 2948 Riverside Lancaster Valley, less than 2 miles from the Temecula River on the road to Hemet. 518 Comment
  RSA85545  Cheilanthes viscida F. W. Peirson 1921-3-22 2371 Riverside Murray Canyon, south side in canyon 457 Comment
  RSA85931  Pilularia americana F. W. Peirson 1922-4-29 2922 Riverside South of Lake Elsinore. 381 Comment
  RSA85942  Selaginella bigelovii Frank W. Peirson 1921-3-22 s.n. Riverside Murray Canyon, near Palm Springs 487 Comment
  RSA86207  Notholaena californica subsp. leucophylla F. W. Peirson 1921-3-20 1503 Riverside Andreas Canyon, near Palm Springs. 243 Comment
  RSA86299  Potentilla rimicola F. W. Peirson 1924-7-27 5000 Riverside Pinnacle 0.5 miles west of Deer Spring 2439 Comment
  RSA86946  Lupinus arizonicus F. W. Peirson 1920-3-16 703 Riverside Sandy places opposite mouth of Andreas Canyon, Southwest of Palm Springs. Comment
  RSA86985  Cercidium floridum F. W. Peirson 1921-4-13 sn Riverside Deep Canyon Wash, about 12 miles SE of Palm Springs. 152 Comment
  RSA86999  Caesalpinia virgata F. W. Peirson 1917-4-1 s.n Riverside Along south edge of Colorado Desert embayment east of Palm Springs, above ''Garden of Eden'. Comment
  RSA87043  Lupinus arizonicus F. W. Peirson 1916-04 542 Riverside Region of Palm Springs. Comment
  RSA87101  Lupinus bicolor subsp. tridentatus F. W. Peirson 1922-5-18 3064 Riverside Keene Camp, San Jacinto Mts., Riverside county. 1463 Comment
  RSA88858  Carex praegracilis F. W. Peirson 1922-5-20 3062 Riverside Hemet Valley, San Jacinto Mountains. 1371 Comment
  RSA91284  Isocoma acradenia var. eremophila F. W. Peirson 1920-12-28 2335 Riverside Murray Canyon near Palm Springs Comment
  RSA92097  Carex nebrascensis F. W. Peirson 1924-7-27 5002 Riverside South side of Dark Canyon, San Jacinto Mountains. 2499 Comment
  RSA97439  Phoradendron californicum F. W. Peirson 1920-12-28 1719 Riverside Murray Canyon near Palm Springs Comment
  SD87749  Eleocharis geniculata F. W. Peirson 1924-12-30 5408 Riverside 1000 Palms Canon Comment
  SD87822  Pectocarya heterocarpa Frank W. Peirson 1935-4-17 Riverside 30 miles north of Blythe in small alluvial flat along the Colorado River Comment
  UC483076  Salix laevigata Frank W. Peirson 1928-3-10 7700 Riverside Snow Creek Auto Camp Whitewater Comment
  UC501453  Amsonia tomentosa Frank W. Peirson 1928-4-25 7921 Riverside ca. 10 mi. s. 29 Palms (White Tank Region); White Tank Region Comment
  UC501636  Triodanis biflora Frank W. Peirson 1926-5-2 6723 Riverside grade n Dripping Spring; n of Dripping Spring 426 Comment
  UC908107  Saltugilia australis Frank W. Peirson 1921-3-22 4136 Riverside Murray Canyon Colorado Desert, Murray Canyon Comment
  UCD91780  Poa secunda subsp. secunda F. W. Peirson 1921-3-22 5368 Riverside Murray Canyon, Colorado Desert. 396 Comment
  RSA0004824  Epilobium glaberrimum subsp. glaberrimum F. W. Peirson 1924-7-28 5013 Riverside Pine Flats Camp 1799 Comment
  RSA0017275  Gilia ochroleuca subsp. exilis F. W. Peirson 1938-5-30 12413 Riverside Thomas Mountain, Hemet Valley. 1402 Comment
  RSA0018447  Fragaria vesca F. W. Peirson 1922-5-19 3038 Riverside San Jacinto River. 1143 Comment
  RSA0018750  Nicotiana obtusifolia F. W. Peirson 1920-2-15 s.n. Riverside Murray Canyon near Palm Springs Comment
  RSA0018759  Nicotiana obtusifolia F. W. Peirson 1917-4-1 1089 Riverside Andreas Canyon near Palm Springs. Comment
  RSA0018792  Erythranthe guttata F. W. Peirson 1917-4-1 1125 Riverside Andreas Canyon near Palm Springs. Comment
  RSA0022930  Eschscholzia androuxii F. W. Peirson 1928-4-23 7888 Riverside 2.5 miles below cottonwood Springs. Comment
  RSA0094962  Saltugilia australis F. W. Peirson 1921-3-22 4136 Riverside Murray Canyon, Colo. Desert. 396 Comment
  RSA087054  Lupinus microcarpus var. densiflorus F. W. Peirson 1929-5-4 8340 Riverside 2 miles north of Aguanga, South of Hemet. 549 Comment
  RSA65838  Sisymbrium altissimum F. W. Peirson 1922-4-22 5331 Riverside Field S of Lake Elsinore. Comment
  RSA90166  Astragalus lentiginosus var. borreganus F. W. Peirson 1924-12-29 5402 Riverside Near Garnet, northeast of Palm Springs Comment
  RSA90230  Astragalus douglasii var. parishii F. W. Peirson 1922-5-20 3342 Riverside Hemet Valley, San Jacinto Mountains. 1371 Comment
  RSA90289  Lathyrus vestitus subsp. alefeldii F. W. Peirson 1922-4-28 2946 Riverside Leach Canyon Near Lake Elsinore. 549 Comment
  RSA90355  Lotus nevadensis var. nevadensis F. W. Peirson 1924-7-27 4989 Riverside San Jacinto Mountains: Dark Canyon. 2226 Comment
  RSA90691  Gutierrezia sarothrae F. W. Peirson 1920-6-22 5297 Riverside Temescal Canyon 335 Comment
  RSA90742  Astragalus pomonensis F. W. Peirson 1922-4-29 2957 Riverside Roadside W of Lake Elsinore. 381 Comment
  RSA90749  Astragalus pachypus var. jaegeri F. W. Peirson 1922-4-29 2950 Riverside 1 mile or more south of Dripping Springs, Temecula River 518 Comment
  RSA90892  Carex sartwelliana F. W. Peirson 1924-7-28 5015 Riverside Pine Flats Camp 1799 Comment
  RSA91118  Trifolium monanthum subsp. grantianum F. W. Peirson 1924-7-28 5016 Riverside Pine flats Camp, San Jacinto Mts. 1799 Comment
  RSA91131  Trifolium microcephalum F. W. Peirson 1930-5-10 8774 Riverside Summit of St. Johns Grade south of Hemet. 762 Comment
  RSA91176  Isocoma acradenia var. eremophila F. W. Peirson 1922-12-28 4740 Riverside Andreas Canyon, east base of San Jacinto Mts. 244 Comment
  RSA91190  Lupinus hyacinthinus F. W. Peirson 1938-5-30 12412 Riverside Thomas Mountain, Hemet Valley. 1402 Comment
  RSA91231  Alnus rhombifolia F. W. Peirson 1928-3-10 7698 Riverside along irrigation ditch, Snow Creek Auto Camp at Whitewater, head of Coachella Valley. Comment
  RSA91432  Dalea mollissima F. W. Peirson 1922-4-11 4428 Riverside Deep Canyon Wash, about 12 miles SE of Palm Springs 244 Comment
  RSA91439  Psorothamnus spinosus F. W. Peirson 1921-4-13 568 Riverside Deep Canyon Wash, about 12 miles SE of Palm Springs. 152 Comment
  RSA91537  Trifolium willdenovii F. W. Peirson 1919-4-14 559 Riverside Murray Canyon, Palm Springs Region. Comment
  RSA91580  Schoenoplectus maritimus F. W. Peirson 1918-03 1618 Riverside Mecca. Comment
  RSA91917  Phragmites australis F. W. Peirson 1924-12-30 5407 Riverside Thousand Palms Canyon, Coachella Valley. 122 Comment
  RSA91958  Glyceria striata F. W. Peirson 1924-7-27 4985 Riverside Along creek in Dark Canyon, 1829 Comment
  RSA92130  Eleocharis palustris F. W. Peirson 1922-4-29 1619 Riverside Temecula River, southwestern Riverside County 427 Comment
  RSA92446  Panicum urvilleanum F. W. Peirson 1928-3-10 7703 Riverside Just east of Whitewater Bridge, near Whitewater, at head of Coachella Valley. Comment
  RSA92695  Salix exigua F. W. Peirson 1924-12-30 5410 Riverside Thousand-Palms Canyon, Colorado Desert 122 Comment
  RSA92991  Lasthenia coronaria F. W. Peirson 1922-5-19 4519 Riverside 5 miles NE of Murrieta 457 Comment
  RSA93014  Lasthenia microglossa F. W. Peirson 1919-4-14 1376 Riverside Shelter of high wall of rock, Murray Canyon near Palm Springs. 488 Comment
  RSA93199  Baccharis salicifolia F. W. Peirson 1918-03 2231 Riverside Whitewater at head of Coachella Valley. Comment
  RSA93246  Chrysothamnus teretifolius F. W. Peirson 1937-10-20 12363 Riverside Santa Rosa Mts 1829 Comment
Read comments
Dec 17 2011
  RSA93281  Pentachaeta aurea F. W. Peirson 1922-5-19 3037 Riverside San Jacinto River 1143 Comment
  RSA93325  Xylorhiza cognata F. W. Peirson 1927-4-13 7258 Riverside Painted Canyon, near Mecca Comment
  RSA93727  Pleurocoronis pluriseta F. W. Peirson 1927-4-12 7173 Riverside Painted Canyon, near Mecca Comment
  RSA93769  Helianthus niveus subsp. canescens F. W. Peirson 1918-03 1329 Riverside Irrigated field near Indio. Comment
  RSA94085  Psathyrotes ramosissima F. W. Peirson 1927-4-12 7165 Riverside Forks of Painted Canyon, near Mecca Comment
  RSA94099  Hemizonia kelloggii F. W. Peirson 1925-5-20 6011 Riverside Aguanga. 610 Comment
  RSA94416  Eriophyllum ambiguum var. paleaceum F. W. Peirson 1933-4-13 10638 Riverside Road from Deep Canyon to Idyllwild. 610 Comment
  SEINET10460870  Nemacladus sigmoideus Frank W. Peirson Peirson 7913 Riverside n Colorado Desert Comment
  CAS-BOT-BC10879  Erythranthe suksdorfii Frank Warrington Peirson 1922-6-22 4722 San Bernardino South Fork of Santa Ana River Meadows, San Bernardino Mountains 2346 Comment
  CAS-BOT-BC139406  Agrostis hyemalis Frank W. Peirson 1923-8-23 3971 San Bernardino San Bernardino Mountains. High Creek. Comment
  CAS-BOT-BC17376  Arabis pycnocarpa var. pycnocarpa Frank W. Peirson 1922-8-27 5326 San Bernardino San Bernardino Mountains. Santa Ana River. 1935 Comment
  CAS-BOT-BC174065  Arenaria lanuginosa var. saxosa Frank W. Peirson 1922-6-24 s.n. San Bernardino San Bernardino Mts. Santa Ana Riv. at S.F. Comment
  CAS-BOT-BC19868  Carex echinata subsp. echinata Frank W. Peirson 1924-7-5 4899 San Bernardino San Bernardino Mountains. Bluff Lake. 2286 Comment
  CAS-BOT-BC205528  Sidalcea hickmanii subsp. parishii Frank W. Peirson 1924-7-16 4971 San Bernardino Barton Flats Road, San Bernardino Mts. 1524 Comment
  CAS-BOT-BC27886  Boechera peirsonii Frank Warrington Peirson 1922-8-24 3269 San Bernardino Dollar Lake, San Bernardino Mts. 2834 Comment
  CAS-BOT-BC293570  Erigeron aphanactis var. congestus Frank W. Peirson 1922-6-23 3102 San Bernardino Summit of Sugarloaf, San Bernardino Mts. 2987 Comment
  CAS-BOT-BC34441  Carex deflexa var. boottii Frank W. Peirson 1924-7-5 4902 San Bernardino San Bernardino Mountains. Bluff Lake. Comment
  CAS-BOT-BC39682  Cusickiella douglasii Frank W. Peirson 1930-4-28 8755 San Bernardino Sugarloaf Road south from Baldwin Lake. 2133 Comment
  CAS-BOT-BC39684  Cusickiella douglasii Frank W. Peirson 1924-5-15 4589 San Bernardino San Bernardino Mountains. Baldwin Lake. 2042 Comment
  CAS-BOT-BC423157  Cleomella obtusifolia Frank W. Peirson 1924-5-14 4576 San Bernardino Mojave Desert. 21 miles east of Victorville Comment
  CAS-BOT-BC70686  Cystopteris fragilis Frank W. Peirson 1922-6-24 s.n. San Bernardino south fork Santa Ana River, 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
  JEPS15886  Corethrogyne filaginifolia Frank W. Peirson 1926-9-5 7072 San Bernardino along shore Arrowhead Lake; San Bernardino Mts., Arrowhead Lake 1524 Comment
  JEPS1679  Hesperochiron californicus Frank W. Peirson 1924-5-16 4585 San Bernardino e. end Bear Lake; San Bernardino Mts. Comment
  JEPS22361  Erigeron parishii Frank W. Peirson 1926-5-29 6736 San Bernardino Cushenberry Grade; roadside, near type locality 1295 Comment
  JEPS53808  Rorippa nasturtium-aquaticum Frank W. Peirson 1919-4-16 372 San Bernardino Cajon Pass San Gabriel Mountains, Cajon Pass 685 Comment
  JEPS54609  Astragalus douglasii var. parishii Frank W. Peirson 1922-6-21 4754 San Bernardino Santa Ana River San Bernardino Mts., Santa Ana River 2011 Comment
  JEPS56873  Eriogonum heermannii var. argense F. W. Peirson 1922-5-13 2963 San Bernardino Pilot Knob Mohave Desert 1524 Comment
  JEPS61293  Mirabilis pumila Frank W. Peirson 1922-8-27 3288 San Bernardino Santa Ana River; San Bernardino Mts, Santa Ana River 1432 Comment
  JEPS69714  Saltugilia splendens subsp. grantii Frank W. Peirson 1919-6-4 457 San Bernardino Icehouse Canyon San Gabriel Mountains, Icehouse Canyon 1676 Comment
  LA38974  Mimulus mohavensis Frank W. Peirson; 1922-5-14 2982 San Bernardino Half way Barstow to Victorville, River Rd Comment
  PASA1082  Lotus eriophorus var. heermannii Frank W. Peirson 1920-9-15 San Bernardino North Fork Lytle Creek 1981 Comment
  PASA1124  Scutellaria angustifolia Frank W. Peirson 1922-6-5 San Bernardino Barton Flats Region, San Bernardino Mts. 1981 Comment
  PASA1250  Stipa comata Frank W. Peirson 1930-7-1 San Bernardino Southwest shore of Baldwin Lake, San Bernardino Mts. 2042 Comment
  PASA1331  Phacelia ramosissima Frank W. Peirson 1930-7-3 San Bernardino Road to Fish Hatchery south of Baldwin Lake, San Bernardino Mts. 2194 Comment
  PASA1514  Viola blanda Frank W. Peirson 1922-6-22 San Bernardino South Fork Santa Ana River, San Bernardino Mts. 2346 Comment
  PASA1737  Gutierrezia lucida Frank W. Peirson 1924-8-31 San Bernardino Box S. Spring 1081 Comment
  PASA1738  Gutierrezia sarothrae Frank W. Peirson 1920-8-23 San Bernardino Santa Ana River, San Bernardino Mts. Comment
  PASA2122  Nemophila spatulata Frank W. Peirson 1922-6-24 San Bernardino Santa Ana River, San Bernardino Mts. 1950 Comment
  PASA2204  Dyssodia cooperi Frank W. Peirson 1930-5-31 San Bernardino Summit of grade above Warrens Well Comment
  PASA2375  Acer glabrum Frank W. Peirson 1930-7-4 San Bernardino Greene Creek, north slope Sugarloaf, San Bernardino Mts. 2438 Comment
  PASA2709  Astragalus acutirostris Frank W. Peirson 1930-5-31 8925 San Bernardino Summit of grade above Warrens Well Comment
  PASA2710  Astragalus agninus Frank W. Peirson 1928-4-1 7759 San Bernardino Silver Lake, about 8 miles north of Baker Comment
  PASA2713  Astragalus bernardinus Frank W. Peirson 1930-5-31 8924 San Bernardino Summit of grade above Warrens Well Comment
  PASA342  Stephanomeria parryi Frank W. Peirson 1930-5-31 San Bernardino West of Adelanto, Mohave Desert Comment
  PASA382  Lewisia nevadensis Frank W. Peirson 1924-5-16 San Bernardino South side of Bear Lake, 2_ miles from dam, San Bernardino Mts. 2042 Comment
  PASA383  Barbarea vulgaris Frank W. Peirson 1924-7-5 San Bernardino Bluff Lake, San Bernardino Mts. 2285 Comment
  PASA454  Eschscholzia glyptosperma Frank W. Peirson 1927-5-7 San Bernardino 1 mile east of Kramer, Mohave Desert Comment
  PASA843  Iva axillaris Frank W. Peirson 1930-7-2 San Bernardino North shore of Baldwin Lake, San Bernardino Mts. 2042 Comment
  POM11884  Myosurus aristatus F. W. Peirson 1922-6-22 3110 San Bernardino South Fork of Santa Ana River. 2378 Comment
  POM13534  Calyptridium parryi F. W. Peirson 1922-6-21 s.n. San Bernardino Cienega Seca Creek. 2134 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
  POM13543  Silene menziesii subsp. dorrii F. W. Peirson 1922-6-24 s.n. San Bernardino Santa Ana River, 1/4 mile above the south fork 1951 Comment
  POM13546  Hulsea vestita subsp. parryi F. W. Peirson 1922-6-24 s.n. San Bernardino South Fork of the Santa Ana River 1921 Comment
  POM142527  Camissonia confusa F. W. Peirson 1919-5-30 2706 San Bernardino San Antonio Canyon, San Gabriel Mts. 1677 Comment
  POM162732  Helianthus gracilentus F. W. Peirson 1929-8-23 8581 San Bernardino City Creek Grade below Fredalba 1524 Comment
  POM171917  Dudleya saxosa subsp. aloides F. W. Peirson 1930-5-31 8926 San Bernardino Summit of grade above Warrens Well. Little San Bern Mtns. Comment
  POM175476  Artemisia ludoviciana subsp. ludoviciana F. W. Peirson 1931-10-10 9601 San Bernardino Baldwin Lake, San Bernardino Mountains 2073 Comment
  POM20559  Mimulus parishii F. W. Peirson 1921-5-29 199 San Bernardino Mojave River. 884 Comment
  POM212922  Phacelia crenulata var. minutiflora F. W. Peirson 1935-4-18 11493 San Bernardino Copper Basin, Whipple Mts., eastern San Bernardino Co. 457 Comment
  POM212926  Plagiobothrys jonesii F. W. Peirson 1935-4-18 11495 San Bernardino Whipple Mountains. Summit of main ridge N of Copper Basin. 686 Comment
  POM47644  Astragalus albens F. W. Peirson 1924-5-15 4570 San Bernardino Cactus Flat, San Bernardino Mts. level open place on hills. 1768 Comment
  POM9680  Gentiana fremontii F. W. Peirson 1920-8-25 s.n. San Bernardino South Fork of Santa Ana River 2439 Comment
  RSA0016435  Helianthus nuttallii subsp. nuttallii F. W. Peirson 1923-8-30 4022 San Bernardino Clyde Ranch, Lone Pine Canyon. Eastern San Gabriel Mountains, west San Bernardino County 1494 Comment
  RSA100231  Parishella californica F. W. Peirson 1922-5-12 2968 San Bernardino 22 miles north of Barstow, Comment
  RSA364617  Carex bolanderi F. W. Peirson 1924-7-14 4963 San Bernardino Lost Creek, San Bernardino Mountains. Comment
  RSA399608  Thalictrum sparsiflorum F. W. Peirson 1924-7-5 645 San Bernardino North shore of Baldwin Lake 2037 Comment
  RSA399957  Ranunculus alismifolius var. alismellus F. W. Peirson 1924-7-5 4900 San Bernardino North shore of Baldwin Lake 2037 Comment
  RSA499251  Ivesia saxosa F. W. Peirson 1924-9-1 4605 San Bernardino Cactus Flat. 1799 Comment
  RSA64900  Eriogonum plumatella F. W. Peirson 1924-8-31 5104 San Bernardino Roadside, 2 miles N of Cajon Pass, S Mojave Desert 1159 Comment
  RSA65039  Silene parishii F. W. Peirson 1924-7-13 5320 San Bernardino Divide between Fish and Mission Creeks 2530 Comment
  RSA65062  Silene verecunda subsp. platyota F. W. Peirson 1922-8-25 3270 San Bernardino Along base of E slope, S Fork of Santa Ana River, San Bernardino Mts 2500 Comment
  RSA65083  Eriogonum gracillimum F. W. Peirson 1932-11-13 10485 San Bernardino Deadman Point, east of Victorville. 915 Comment
  RSA65121  Eriogonum deflexum var. baratum F. W. Peirson 1916-7-8 1740 San Bernardino Box 'S' Springs near north base of San Bernardino Mtns. 1082 Comment
  RSA65379  Atriplex lentiformis F. W. Peirson 1924-8-31 s.n. San Bernardino Victorville, Mojave Desert. 793 Comment
  RSA65606  Stellaria calycantha F. W. Peirson 1923-8-23 4158 San Bernardino High Creek, San Bernardino Mountains. 2774 Comment
  RSA65723  Claytonia rubra subsp. rubra F. W. Peirson 1951-1 s.n. San Bernardino Bear Valley. Comment
  RSA65787  Cleomella obtusifolia F. W. Peirson 1922-5-14 3004 San Bernardino 8 miles north of Barstow. Comment
  RSA65811  Descurainia incana subsp. incisa F. W. Peirson 1942-5-10 13433 San Bernardino Summit of Johnson Grade above Baldwin Lake, San Bernardino Mts. Comment
  RSA65851  Eriogonum microtheca var. johnstonii F. W. Peirson 1922-7-19 3199 San Bernardino Cucamonga Peak, San Gabriel Mountains 2591 Comment
  RSA65925  Eriogonum inflatum var. inflatum F. W. Peirson 1924-5-14 4584 San Bernardino Box S Springs, near north base of San Bernardino Mountains, southern Mojave Desert 1082 Comment
  RSA66071  Barbarea orthoceras F. W. Peirson 1924-7-5 4901 San Bernardino Bluff Lake, San Bernardino Mts. 2286 Comment
  RSA66178  Draba corrugata F. W. Peirson 1920-8-22 2325 San Bernardino Foxesse Creek, San Bernardino Mts. 2668 Comment
  RSA66198  Arabis pulchra F. W. Peirson 1924-5-15 4568 San Bernardino Cactus Flat 1829 Comment
  RSA66250  Arabis hirsuta var. glabrata F. W. Peirson 1922-8-27 6350 San Bernardino Santa Ana River, San Bernardino Mts 1936 Comment
  RSA66554  Draba corrugata F. W. Peirson 1951-1 57 San Bernardino San Bernardino Mountains. Comment
  RSA66587  Lesquerella tenella F. W. Peirson 1932-3-23 9812 San Bernardino 35 miles S of Needles on road to Blythe. Comment
  RSA66715  Caulanthus major F. W. Peirson 1929-10-5 8594 San Bernardino Along stream south of Peter Pan Woodland Club, Bear Valley 2134 Comment
  RSA66805  Streptanthella longirostris F. W. Peirson 1930-4-16 8730 San Bernardino Cima road, 8 miles S of the Las Vegas to Baker road Comment
  RSA67144  Galium parishii F. W. Peirson 1924-7-5 4889 San Bernardino Bluff Lake Meadow. 2317 Comment
  RSA69451  Juncus effusus subsp. austrocalifornicus F. W. Peirson 1922-6-20 3096 San Bernardino 4 miles east of San Bernardino. Comment
  RSA69647  Malaxis brachypoda Frank W. Peirson 1920-8-25 2271 San Bernardino South Fork of Santa Ana River 2438 Comment
  RSA69659  Juncus macrophyllus F. W. Peirson 1922-8-27 3271 San Bernardino Barton Flats, San Bernardino Mountains. 1982 Comment
  RSA69726  Lemna minuta F. W. Peirson 1924-8-31 5111 San Bernardino South of Victorville. 793 Comment
  RSA69919  Apocynum X floribundum F. W. Peirson 1929-7-11 8457 San Bernardino fairly abundant on ridge and slopes back of and at Public Auto Camp, Fawnskin, Bear Valley. 2043 Comment
  RSA69921  Apocynum androsaemifolium F. W. Peirson 1930-7-8 9034 San Bernardino Fish Hatchery north slope of SugarLoaf. 2363 Comment
Read comments
Aug 15 2011
  RSA69952  Krascheninnikovia lanata F. W. Peirson 1917-5-13 1831 San Bernardino West of Victorville. Comment
  RSA70022  Suaeda moquinii F. W. Peirson 1924-8-31 5123 San Bernardino Open desert, 4 miles west of Box S Ranch, so. Mojave Desert 915 Comment
  RSA70068  Platanthera sparsiflora Frank W. Peirson 1920-9-14 4284 San Bernardino Coldwater cienega, tributary of Lytle Creek, San Gabriel Mountains. 2134 Comment
  RSA70176  Allium monticola F. W. Peirson 1919-6-14 5355 San Bernardino Icehouse canyon 1829 Comment
  RSA70190  Allium fimbriatum var. mohavense F. W. Peirson 1922-5-12 2990 San Bernardino About 1 mile south of top of grade near Pilot Knob, Mojave Desert. Comment
  RSA70324  Asclepias erosa F. W. Peirson 1927-7-10 7354 San Bernardino Mexican Well, eastern border of San Bernardino Co. 1220 Comment
  RSA70469  Allium lacunosum var. davisiae F. W. Peirson 1922-5-13 3007 San Bernardino 3 miles north of Granite Wells, Mojave Desert. Comment
  RSA70527  Calochortus invenustus Frank W. Peirson 1918-7-7 2851 San Bernardino Ontario Ridge, eastern San Gabriel Mountains. 2530 Comment
  RSA70583  Sisyrinchium bellum Frank W. Peirson 1918-7-8 11 San Bernardino San Antonio Canyon, Los Angeles-San Bernardino County Line 1829 Comment
  RSA70606  Iris hartwegii subsp. australis Frank W. Peirson 1922-6-25 2140 San Bernardino Near Barton Flats, San Bernardino Mountains. 1982 Comment
  RSA71796  Saltugilia splendens subsp. grantii F. W. Peirson 1919-6-4 457 San Bernardino Icehouse Canyon 1677 Comment
  RSA71834  Gilia leptantha subsp. leptantha F. W. Peirson 1922-7-24 2259 San Bernardino Santa Ana River 1905 Comment
  RSA71843  Gilia latiflora subsp. latiflora F. W. Peirson 1922-5-14 4140 San Bernardino 8 miles north of Barstow. Comment
  RSA71881  Gilia aliquanta subsp. aliquanta F. W. Peirson 1921-5-29 4131 San Bernardino Along old road, north slope of Cajon Pass. 1098 Comment
  RSA72039  Phlox dolichantha F. W. Peirson 1916-7-6 905 San Bernardino Ridge south of Bear Valley. Comment
  RSA72131  Epilobium angustifolium subsp. circumvagum F. W. Peirson 1924-7-13 4935 San Bernardino Fish Creek, San Bernardino Mountains. 2058 Comment
  RSA72149  Gayophytum decipiens F. W. Peirson 1906-8-14 799 San Bernardino Bluff Lake, San Bernardino Mountains. 2256 Comment
  RSA72296  Aliciella lottiae F. W. Peirson 1924-5-14 4577 San Bernardino 21 miles east of Victorville. Comment
  RSA72350  Epilobium canum subsp. latifolium F. W. Peirson 1926-9-6 7084 San Bernardino Deep Creek Toll Road. 1372 Comment
  RSA72996  Leptosiphon breviculus F. W. Peirson 1924-5-15 4564 San Bernardino Cactus Flat, San Bernardino Mts. level open place on hills. 1768 Comment
  RSA73280  Linanthus pungens F. W. Peirson 1919-6-4 s.n. San Bernardino San Gabriel Mountains: Ontario Ridge, Icehouse Canyon 1890 Comment
  RSA74200  Phacelia campanularia subsp. vasiformis F. W. Peirson 1926-4-27 6678 San Bernardino 13 miles W of Victorville 915 Comment
  RSA74504  Phacelia mohavensis F. W. Peirson 1916-7-6 961 San Bernardino Bear Lake. San Bernardino Mts. Comment
  RSA74701  Phacelia rotundifolia F. W. Peirson 1922-5-13 2979 San Bernardino Summit of Pilot Knob, Mohave Desert. 1677 Comment
  RSA74714  Nama densa var. parviflora F. W. Peirson 1932-5-10 9958 San Bernardino 26 miles W of Baker on the Barstow road. 457 Comment
  RSA74726  Phacelia curvipes F. W. Peirson 1916-7-6 986 San Bernardino Bear Lake. San Bernardino Mts. Comment
  RSA74925  Phacelia hastata F. W. Peirson 1930-7-4 8998 San Bernardino Greene Creek, north slope of Sugerloaf. 2515 Comment
  RSA75372  Camissonia boothii subsp. boothii F. W. Peirson 1916-7-9 792 San Bernardino Mojave Desert, near Victorville. Comment
  RSA75392  Oenothera cespitosa subsp. marginata F. W. Peirson 1926-5-30 6742 San Bernardino North side of Baldwin Lake. San Bernardino Mountains. 2043 Comment
  RSA75522  Phacelia fremontii F. W. Peirson 1927-5-8 7293 San Bernardino Half way between Victorville and Barstow. Comment
  RSA75947  Phacelia austromontana F. W. Peirson 1930-7-4 s.n. San Bernardino Green Creek, north slope of Sugarloaf, San Bernardino Mts. 2378 Comment
  RSA77233  Eriodictyon trichocalyx var. trichocalyx F. W. Peirson 1919-6-4 989 San Bernardino San Antonio Canyon. 1448 Comment
  RSA77508  Aralia californica F. W. Peirson 1922-9-14 4463 San Bernardino Cascade Canyon, fork of San Antonio Canyon 1371 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
  RSA77742  Viola sororia subsp. affinis F. W. Peirson 1920-5-20 2145 San Bernardino Lytle Creek, San Gabriel Mts. 1067 Comment
  RSA77784  Viola adunca F. W. Peirson 1916-7-4 746 San Bernardino Grass Valley. Comment
  RSA77881  Tiquilia nuttallii F. W. Peirson 1921-5-29 2734 San Bernardino Mojave River, E of Hesperia, Comment
  RSA79467  Collinsia torreyi var. wrightii F. W. Peirson 1927-6-15 7346 San Bernardino West side of the Coldwater; Devil's Backbone, San Gabriel Mountains. 2591 Comment
  RSA79851  Penstemon grinnellii F. W. Peirson 1924-7-5 4907 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA79867  Penstemon rostriflorus F. W. Peirson 1920-8-22 2263 San Bernardino Foxesee Creek [Forsee Creek], San Bernardino Mts. 2591 Comment
  RSA79868  Penstemon rostriflorus F. W. Peirson 1929-7-11 8456 San Bernardino Fawnskin, Bear Valley. 2073 Comment
  RSA79925  Cryptantha cinerea var. abortiva F. W. Peirson 1922-6-21 3103 San Bernardino East of Big Meadows, upper Santa Ana River, San Bernardino Mountains 2165 Comment
  RSA80041  Veronica scutellata F. W. Peirson 1906-8-15 s.n. San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA80112  Mimulus bigelovii var. bigelovii F. W. Peirson 1932-3-24 9823 San Bernardino Baker, along SW base of rock hill 280 Comment
  RSA80125  Mimulus bigelovii var. bigelovii F. W. Peirson 1922-5-12 3013 San Bernardino Copper City, Mojave Desert. Comment
  RSA80203  Plagiobothrys jonesii F. W. Peirson 1935-4-18 11495 San Bernardino Summit of main ridge N of Copper Basin, Whipple Mts 686 Comment
  RSA80259  Castilleja lasiorhyncha F. W. Peirson 1906-8-15 1166 San Bernardino Bluff Lake, San Bernardino Mountains. 2256 Comment
  RSA80381  Solanum umbelliferum F. W. Peirson 1929-10-11 8598 San Bernardino City Creek Rd., 2 mi west of Bear Lake Dam. 2134 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
  RSA80837  Pedicularis semibarbata F. W. Peirson 1919-6-4 212 San Bernardino Icehouse Canyon Divide, San Gabriel Mountains. 2409 Comment
  RSA82074  Utricularia vulgaris subsp. macrorhiza F. W. Peirson 1924-8-31 5113 San Bernardino South of Victorville 793 Comment
  RSA82078B  Orobanche fasciculata F. W. Peirson 1909-1 s.n. San Bernardino Dry Lake. Comment
  RSA82212  Verbena gooddingii F. W. Peirson 1930-4-16 8737 San Bernardino 8 miles south of Cima, eastern San Bernardino Comment
  RSA82385  Scutellaria siphocampyloides F. W. Peirson 1930-7-3 8977 San Bernardino Along a road leading to Fish Hatchery south of Baldwin Lake, San Bernardino Mountains 2134 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
  RSA82522  Limosella acaulis F. W. Peirson 1906-8-14 857 San Bernardino Bluff Lake, San Bernardino Mountains. Comment
  RSA83403  Monardella cinerea F. W. Peirson 1920-9-12 182 San Bernardino San Gabriel Mountains: Mt. San Antonio (Baldy) 2820 Comment
  RSA84284  Equisetum hyemale var. affine F. W. Peirson 1922-6-22 3112 San Bernardino South Fork of Santa Ana River, San Bernardino Mountains 2438 Comment
  RSA84869  Ranunculus cymbalaria var. saximontanus F. W. Peirson 1930-7-1 8963 San Bernardino Baldwin Lake 2043 Comment
  RSA85184  Ephedra viridis F. W. Peirson 1922-5-13 1526 San Bernardino Summit of Pilot Knob, northwestern San Bernardino County 1677 Comment
  RSA85190  Sparganium angustifolium F. W. Peirson 1924-7-5 1537 San Bernardino Bluff Lake Meadows, San Bernardino Mountains. 2287 Comment
  RSA85313  Mahonia dictyota F. W. Peirson 1923-8-30 11701 San Bernardino Colony on south side of road a short distance west of the Lone Pine Canyon divide, Swartout Valley. 1828 Comment
  RSA85775  Drymocallis glandulosa var. reflexa F. W. Peirson 1927-6-15 7347 San Bernardino West side of the Coldwater; Devil's Backbone, San Gabriel Mountains. 2591 Comment
  RSA86185  Cryptogramma acrostichoides F. W. Peirson 1920-8-22 1519 San Bernardino Ridge east of Foxesee Creek [Forsee Creek], San Bernardino Mts. 2895 Comment
  RSA86530  Pinus attenuata F. W. Peirson 4583 San Bernardino City Creek Road. 1067 Comment
  RSA86685  Leymus triticoides F. W. Peirson 1930-7-1 8954 San Bernardino Southwest shore of Baldwin Lake 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
  RSA86762  Deschampsia danthonioides F. W. Peirson 1924-5-15 4537 San Bernardino lower end of Cactus Flat east end of San Bernardino Mts. California. 1768 Comment
  RSA86769  Deschampsia elongata F. W. Peirson 1924-7-13 4934 San Bernardino big Meadows, upper Santa Ana River, San Bernardino Mountains. 2134 Comment
  RSA86786  Lolium perenne subsp. multiflorum F. W. Peirson 1920-6-22 2166 San Bernardino 2 miles south of Chino Comment
  RSA86794  Rosa woodsii subsp. gratissima F. W. Peirson 1924-5-14 4562 San Bernardino Box S Springs in Cushenberry [Cushenbury] Springs Region, north base of San Bernardino Mountains. 1082 Comment
  RSA86943  Cercidium microphyllum F. W. Peirson 1935-4-19 11500 San Bernardino Whipple Mountains; Near Parker Dam site Comment
  RSA86972  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1923-3-23 7719 San Bernardino 1 mile east of Mentone. Comment
  RSA87034  Lupinus shockleyi F. W. Peirson 1922-5-12 3066 San Bernardino 3 miles SW of Barstow on the Victorville Rd. Comment
  RSA87040  Lupinus succulentus F. W. Peirson 1923-3-23 4222 San Bernardino 1 mile east of Mentone. Comment
  RSA87114  Galium parishii F. W. Peirson 1931-7-9 9386 San Bernardino Head of Arctic Creek, Holcomb Valley 2348 Comment
  RSA87394  Lupinus confertus F. W. Peirson 1924-7-5 8207 San Bernardino Baldwin Lake, San Bernardino Mountains Comment
  RSA87408  Lupinus confertus F. W. Peirson 1906-8-15 546 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA87456  Elymus trachycaulus subsp. subsecundus F. W. Peirson 1922-7-6 4335 San Bernardino Rangers Cabin, Swartout Valley, north side of San Gabriel Mountains. 1799 Comment
  RSA88680  Carex lemmonii F. W. Peirson 1922-6-23 5374 San Bernardino Holcomb Creek, San Bernardino Mountains. 2439 Comment
  RSA88683  Carex lemmonii F. W. Peirson 1922-6-22 3150 San Bernardino South Fork of Santa Ana River, San Bernardino Mountains. 2378 Comment
  RSA88799  Carex praegracilis F. W. Peirson 1924-5-14 4542 San Bernardino Box S Springs, near north base of San Bernardino Mountains, southern Mojave Desert 1082 Comment
  RSA88849  Carex subfusca F. W. Peirson 1920-8-25 2275 San Bernardino Dollar Lake region. 2744 Comment
  RSA90695  Gutierrezia sarothrae F. W. Peirson 1929-8-23 8583 San Bernardino Southwest slopes of Baldwin Lake, San Bernardino Mts. 2073 Comment
  RSA90757  Astragalus purshii var. lectulus F. W. Peirson 1924-5-15 4567 San Bernardino Summit above Doble, San Bernardino Mountains 2100 Comment
  RSA90758  Astragalus purshii var. lectulus F. W. Peirson 1930-4-28 8753 San Bernardino Sugarloaf Road south of Baldwin Lake 2133 Comment
  RSA90963  Erigeron divergens F. W. Peirson 1924-5-15 4572 San Bernardino At foot of hills, Baldwin Lake 2042 Comment
  RSA91218  Krameria erecta F. W. Peirson 1924-5-14 4574 San Bernardino Box S Springs in Cushenberry [Cushenbury] Springs Region, north base of San Bernardino Mountains. 1082 Comment
  RSA91261  Lupinus latifolius subsp. parishii F. W. Peirson 1924-7-13 4938 San Bernardino Fish Creek, San Bernardino Mountains. 2058 Comment
  RSA91996  Polypogon monspeliensis F. W. Peirson 1577 San Bernardino Trail to Dry Lake Comment
  RSA92098  Carex senta F. W. Peirson 1922-6-24 3151 San Bernardino South Fork of the Santa Ana River 1921 Comment
  RSA92311  Poa secunda F. W. Peirson 1924-5-14 4540 San Bernardino Box S Springs in Cushenberry [Cushenbury] Springs Region, north base of San Bernardino Mountains. 1082 Comment
  RSA92682  Eriophyllum lanatum var. obovatum F. W. Peirson 1924-9-2 5181 San Bernardino Fish Camp. 2058 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
  RSA93433  Brickellia oblongifolia var. linifolia F. W. Peirson 1931-7-9 9388 San Bernardino At head of Arctic Canyon 2346 Comment
  RSA94126  Hulsea vestita subsp. parryi F. W. Peirson 1920-8-22 1407 San Bernardino Ridge east of Foxesee Creek [Forsee Creek], San Bernardino Mts 2895 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
  RSA97261  Sphenosciadium capitellatum F. W. Peirson 1924-9-2 5175 San Bernardino Fish Camp. 2058 Comment
  SBBG53804  Myosurus apetalus var. montanus F. W. Peirson 1926-5-31 San Bernardino Bluff Lake 2286 Comment
  SBBG98220  Loeseliastrum schottii F. W. Peirson 1927-5-7 7275 San Bernardino 1 mi E of Kramer Comment
  SD87552  Eriastrum eremicum subsp. eremicum Frank W. Peirson 1926-4-27 6684 San Bernardino 18 miles east of Victorville, Box S. Ranch vicinity. Comment
  SD87728  Adenophyllum cooperi Frank W. Peirson 1927-5-8 7292 San Bernardino Halfway from Barstow to Victorville. Comment
  SD87732  Erigeron divergens F. W. Peirson 1924-5-15 4572 San Bernardino Baldwin Lake; flat land back from lake. 2040 Comment
  SD87774  Equisetum arvense F. W. Peirson 1922-6-22 San Bernardino San Bernardino Mountains, south fork of Santa Ana [River] 2440 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
  UC1106913  Luzula comosa var. laxa Frank W. Peirson 1922-8-22 San Bernardino South Fork Santa Ana River, San Bernardino Mts. 2560 Comment
  UC501434  Apocynum androsaemifolium Frank W. Peirson 1930-7-8 9034 San Bernardino n. slope Sugarloaf; San Bernardino Mts., Fish Hatchery Creek 2362 Comment
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Aug 16 2011
  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
  UC511751  Potentilla anserina subsp. anserina Frank W. Peirson 1933-6-24 4593 San Bernardino shores Baldwin Lake San Bernardino Mts., shores Baldwin Lake 2057 Comment
  UC511768  Packera bernardina Frank W. Peirson 1933-6-24 10671 San Bernardino Baldwin Lake, s shore San Bernardino Mts. 2057 Comment
  UC511916  Hesperostipa comata Frank W. Peirson 1933-6-24 8957 San Bernardino s shore Baldwin Lake; San Bernardino Mts. 2057 Comment
  UC570604  Anemone tuberosa Frank W. Peirson 1935-4-18 11502 San Bernardino n. part of Range near rd. going down into Copper Basin; Whipple Mts. 457 Comment
  UC912240  Artemisia ludoviciana subsp. ludoviciana Frank W. Peirson 1924-8-31 San Bernardino s of Victorville 792 Comment
  UCR136646  Penstemon caesius F. W. Peirson 1924-7-5 4908 San Bernardino San Bernardino Mtns., Bluff Lake 2287 Comment
  UCR70850  Gilia splendens subsp. splendens F. W. Peirson 1924-7-16 4972 San Bernardino Transverse Range; San Bernardino Mtns., Barton Flats Road [probably in vicinity of Seven Oaks] 1616 Comment
  CAS-BOT-BC349732  Monoptilon bellidiforme F. W. Peirson 1928-3-31 7755 San Bernardino Near bridge over Mohave River north of Victorville Comment
  CAS-BOT-BC410982  Nemacladus sigmoideus F. W. Peirson 1926-5-30 6747 San Bernardino Hills north side of Baldwin Lake Comment
  CAS-BOT-BC439727  Claytonia parviflora subsp. viridis Frank W. Peirson 1922-6-24 604 San Bernardino San Bernardino Mts. Santa Ana Riv. 1920 Comment
  JEPS57074  Eriogonum baileyi var. baileyi Frank W. Peirson 1928-9-6 San Bernardino near Warrens Well; Mohave Desert Comment
  PASA2061  Streptanthus major Frank W. Peirson 1930-7-8 San Bernardino Fish Hatcher Creek, Bear Valley, San Bernardino Mts. 2438 Comment
  PASA315  Malacothrix sonchoides Frank W. Peirson 1926-4-27 San Bernardino Vicinity of Box S. Ranch Comment
  PASA886  Apocynum androsaemifolium subsp. pumilum Frank W. Peirson 1930-6-8 San Bernardino Fish Hatchery Creek, Bear Valley, San Bernardino Mts. 2362 Comment
  PASA913  Agoseris heterophylla Frank W. Peirson 1922-7-7 San Bernardino Swartout Valley 1843 Comment
  POM12783  Erigeron breweri var. porphyreticus F. W. Peirson 1922-6-22 3100 San Bernardino Ridge W of S Fork of Santa Ana 2256 Comment
  POM162890  Apocynum androsaemifolium subsp. pumilum F. W. Peirson 1929-10-26 8603 San Bernardino Above Fish Camp, City Cr. Road. 2073 Comment
  POM212924  Cheilanthes parryi F. W. Peirson 1935-4-18 11501 San Bernardino Whipple Mountains, Northern Part of Range Comment
  POM86635  Geum macrophyllum F. W. Peirson 1922-6-24 5335 San Bernardino S Fork of Santa Ana River, San Bernardino Mts 2058 Comment
  POM9912  Cystopteris fragilis F. W. Peirson 1920-8-22 s.n. San Bernardino Foxesee Creek [Forsee Creek], San Bernardino Mtns. 2744 Comment
  POM9922  Eriogonum mohavense F. W. Peirson 1921-5-29 s.n. San Bernardino Mojave River 869 Comment
  RSA0020146  Bromus tectorum F. W. Peirson 1924-5-14 4543 San Bernardino 12 miles east of Victorville. Comment
  RSA0022801  Monardella linoides subsp. erecta F. W. Peirson 1920-8-22 1069 San Bernardino Foxesee Creek, San Bernardino Mts. 2591 Comment
  RSA0030747  Stellaria longipes subsp. longipes F. W. Peirson 1922-6-22 3115 San Bernardino South Fork Santa Meadows. 2377 Comment
  RSA0059734  Fimbristylis thermalis Frank W. Peirson 1924-9-2 5200 San Bernardino Arrowhead Hot Springs. Abundant in the Little Canon. 579 Comment
  RSA0070988  Phacelia davidsonii F. W. Peirson 1924-7-16 4968 San Bernardino Road to Barton Flats, San Bernardino Mts. 1677 Comment
  RSA0079888  Carex rossii F. W. Peirson 1924-7-5 4902 San Bernardino Bluff Lake. 2286 Comment
  RSA0091579  Amsinckia vernicosa F. W. Peirson 1922-5-13 2978 San Bernardino North slope of Pilot Knob, northwestern Mojave Desert. 1296 Comment
  RSA0101696  Botrychium ascendens Frank W. Peirson 1922-7-20 3207 San Bernardino Cienega at Coldwater Fork of Lytle Creek, eastern San Gabriel Mts., San Bernardino Mountains. 2134 Comment
  RSA440016  Cleomella obtusifolia F. W. Peirson 1924-5-14 1924 San Bernardino Mojave Desert; 1 mile w of Box S Ranch. Comment
  RSA65364  Rumex conglomeratus F. W. Peirson 1919-6-5 463 San Bernardino Camp Baldy, San Antonio Canyon, San Gabriel Mts., Los Angeles - San Bernardino Co. line. 1341 Comment
  RSA65652  Claytonia parviflora subsp. tenuifolia F. W. Peirson 1922-6-24 604 San Bernardino Santa Ana River 1921 Comment
  RSA68967  Plantago major F. W. Peirson 1928-9-5 8198 San Bernardino Near Old Woman Springs, s. Mojave Desert . 970 Comment
  RSA69925  Apocynum androsaemifolium subsp. pumilum F. W. Peirson 1929-7-11 8473 San Bernardino abudnant on open sandy slopes and among rocks; City Creek Road above Fish Camp. 2073 Comment
  RSA72196  Oenothera californica subsp. californica F. W. Peirson 1922-7-7 4458 San Bernardino 1 miles E of Big Pines, NE portion of San Gabriel Mts 2012 Comment
  RSA74705  Phacelia rotundifolia F. W. Peirson 1935-4-18 11485 San Bernardino Canyon of Copper Basin Creek, Whipple Mts. Comment
  RSA74787  Phacelia ramosissima var. latifolia F. W. Peirson 1930-7-3 8979 San Bernardino 1.25 miles below Fish Hatchery on road from Bear lake, San Bernardino Mts. 2195 Comment
  RSA75438  Camissonia hirtella F. W. Peirson 1924-7-16 4973 San Bernardino Burned area, Barton Flats Road, San Bernardino Mts. 1616 Comment
  RSA75504  Phacelia brachyloba F. W. Peirson 1924-7-16 4969 San Bernardino Road to Barton Flats, San Bernardino Mts. 1677 Comment
  RSA77078  Loeseliastrum schottii F. W. Peirson 1926-4-28 6687 San Bernardino 1 mile below Box S Spring. Comment
  RSA80152  Mimulus breweri F. W. Peirson 1924-9-2 5190 San Bernardino City Creek Road, San Bernardino Mountians. 1982 Comment
  RSA80252  Mohavea breviflora F. W. Peirson 1932-3-24 9822 San Bernardino Abundant along base of rocky hills, Bakers. 280 Comment
  RSA80838  Pedicularis semibarbata F. W. Peirson 1929-5-31 8408 San Bernardino along summit of San Antonio - Coldwater Divide, San Gabriel Mtns., 2439 Comment
  RSA86208  Cheilanthes parryi F. W. Peirson 1935-4-18 11501 San Bernardino Whipple Mountains: northern part of Whipple Mts. 426 Comment
  RSA90160  Astragalus didymocarpus var. dispermus F. W. Peirson 1926-4-27 6682 San Bernardino Near Box S Ranch, 18 miles east of Victorville, Mojave Desert. Comment
  RSA90244  Astragalus layneae F. W. Peirson 1927-5-7 7282 San Bernardino Flowering specimen found half way between Barstow and Victorville; the fruiting specimen found a few miles E of Kramer. Comment
  RSA90407  Lotus argyraeus var. argyraeus F. W. Peirson 1930-7-5 9010 San Bernardino Road from Bear Lake to Holcomb Valley, San Bernardino Mts. 2133 Comment
  RSA90446  Glycyrrhiza lepidota F. W. Peirson 1916-7-8 574 San Bernardino Box S Springs ca. 18 miles east of Victorville 1082 Comment
  RSA90660  Chrysothamnus nauseosus subsp. consimilis F. W. Peirson 1935-11-10 s.n. San Bernardino Meadow on road to fisheries, Bear Valley, San Bernardino Mountains 2134 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
  RSA90666  Chrysothamnus nauseosus subsp. consimilis F. W. Peirson 1929-11-10 8606 San Bernardino Cactus Flat, eastern San Bernardino Mts. 1829 Comment
  RSA90689  Gutierrezia microcephala F. W. Peirson 1923-9-1 4016 San Bernardino Sheep Creek, north side of San Gabriel Mts. 1524 Comment
  RSA90960  Erigeron divergens F. W. Peirson 1923-8-25 4738 San Bernardino Mill Creek, San Bernardino Mts. 1646 Comment
  RSA90995  Trifolium wormskioldii F. W. Peirson 1924-9-1 5170 San Bernardino Arrastre Flat, Holcomb Valley, San Bernardino Mts. 2271 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
  RSA91157  Lessingia glandulifera var. glandulifera F. W. Peirson 1924-8-31 5099 San Bernardino On road to Phelan N of Cajon Pass, Comment
  RSA91161  Lessingia glandulifera var. glandulifera F. W. Peirson 1921-5-29 1262 San Bernardino Almost due east of Hesperia and on Mojave River. 884 Comment
  RSA91257  Lupinus breweri var. grandiflorus F. W. Peirson 1930-7-5 9002 San Bernardino Wood borders near Peter Pan Woodland Club, Bear Valley, San Bernardino Mts. 2058 Comment
  RSA91270  Isocoma acradenia var. eremophila F. W. Peirson 1924-8-31 5128 San Bernardino Box S Springs, north base of San Bernardino Mountains. 1082 Comment
  RSA91569  Trifolium gracilentum F. W. Peirson 1922-5-13 2969 San Bernardino Granite Wells, Mojave Desert. Comment
  RSA91973  Elymus elymoides F. W. Peirson 1923-8-24 3979 San Bernardino Summit of Mt. San Gorgonio, San Bernardino Mountains. 3500 Comment
  RSA92304  Poa fendleriana F. W. Peirson 1930-4-28 8756 San Bernardino SW of Baldwin Lake, San Bernardino Mts 2104 Comment
  RSA92472  Coreopsis californica var. californica F. W. Peirson 1919-4-16 4237 San Bernardino West of Lytle Creek. 530 Comment
  RSA92507  Filago californica F. W. Peirson 1921-5-29 2422 San Bernardino N slope of Cajon Pass. 1098 Comment
  RSA92507A  Stylocline psilocarphoides F. W. Peirson 1921-5-29 2422 San Bernardino N slope of Cajon Pass. 1098 Comment
  RSA92543  Salix exigua F. W. Peirson 1918-7-9 14 San Bernardino San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA92892  Lasthenia gracilis F. W. Peirson 1919-4-16 389 San Bernardino Foot of Mtns near Lytle Creek. 534 Comment
  RSA93181  Machaeranthera canescens F. W. Peirson 1927-7-10 7357 San Bernardino Mexican Well, eastern border of San Bernardino Co. 1220 Comment
  RSA93347  Xylorhiza tortifolia F. W. Peirson 1917-5-13 1269 San Bernardino West of Victorville. Comment
  RSA93640  Antennaria dimorpha F. W. Peirson 1924-5-15 4596 San Bernardino Low places near Baldwin Lake 2043 Comment
  RSA93741  Aster frondosus F. W. Peirson 1924-7-5 4595 a San Bernardino North shore of Baldwin Lake 2037 Comment
  RSA93762  Baileya pleniradiata F. W. Peirson 1926-4-27 6676 San Bernardino 16 miles W of victorville, Mojave Desert Comment
  RSA93774  Lobelia cardinalis subsp. graminea F. W. Peirson 1923-8-26 3995 San Bernardino Mill Creek; southern San Bernardino Mountains. 1220 Comment
  RSA93780  Brickellia arguta F. W. Peirson 1930-4-16 8747 San Bernardino 12 mi. N of Goffs on road to Cima, E San Bernardino Co. Comment
  RSA93946  Artemisia dracunculus F. W. Peirson 1920-8-22 4747 San Bernardino Ridge east of Foxesee Creek [Forsee Creek], San Bernardino Mountains. 2744 Comment
  RSA94383  Dyssodia cooperi F. W. Peirson 1922-5-12 2986 San Bernardino 3 miles SW of Barstow on the Victorville Rd. Comment
  RSA97445  Phoradendron juniperinum subsp. juniperinum F. W. Peirson 1922-6-21 3142 San Bernardino Cienega Seca Creek. 2134 Comment
  RSA98358  Berula erecta F. W. Peirson 1930-7-10 9042 San Bernardino in stream from Box S Spring, foot of Cushenberry Grade, north base of mountains. 1082 Comment
  UC909098  Loeseliastrum matthewsii Frank W. Peirson 1927-5-7 7283 San Bernardino several mi. e. Kramer Comment
  UCD170059  Sagina saginoides Frank W. Peirson 1922-6-21 5- 319 San Bernardino San Bernardino Mountains, Cienega Seca Creek. 2133 Comment
  CAS-BOT-BC224621  Dichondra occidentalis Frank W. Peirson 1927-4-19 7250 San Diego Headland south of Torrey Pines Comment
  CAS-BOT-BC314984  Hemizonella minima F. W. Peirson 1925-5-15 5926 San Diego Laguna Lakes, Laguna Mts. Comment
  CAS-BOT-BC376037  Stylocline gnaphaloides Frank W. Peirson 1927-4-19 7244 San Diego On headland south of Torrey Pines Comment
  CAS-BOT-BC407812  Gilia ochroleuca subsp. exilis F. W. Peirson 1929-5-5 8363 San Diego South slope of divide between Oak Grove and Warner's Hot Springs 914 Comment
  JEPS42340  Ceanothus oliganthus var. oliganthus Frank W. Peirson 1926-5-1 6711 San Diego East trail Palomar Mt. Comment
  JEPS42400  Ceanothus greggii var. perplexans Frank W. Peirson 1925-5-16 5939 San Diego Monument Peak, Laguna Mountains Comment
  JEPS9806  Lasthenia gracilis Frank W. Peirson 1925-5-18 6018 San Diego Cuyamaca Lake Cuyamaca Lake (s shore) 1402 Comment
  JEPS9967  Castilleja attenuata Frank W. Peirson 1925-5-18 5966 San Diego Cuyamaca Lake, n shore Cuyamaca Lake 1402 Comment
  PASA1520  Viola douglasii Frank W. Peirson 1925-5-15 San Diego Laguna Lakes Auto Camp, Laguna Mts. 1828 Comment
  PASA2547  Delphinium hesperium subsp. cuyamacae Frank W. Peirson 1924-6-23 4809 San Diego North slope French Valley, Palomar 1523 Comment
  PASA2615  Clematis pauciflora Frank W. Peirson 1925-5-17 5949 San Diego Vallecito Canyon, east slope Laguna Mtns. Comment
  PASA325  Malacothrix californica var. glabrata Frank W. Peirson 1928-4-20 San Diego San Felipe Creek at foot of Sentenac Canyon Comment
  PASA984  Castilleja foliolosa Frank W. Peirson 1928-4-21 San Diego San Felipe Creek near foot of Sentenac Canyon Comment
  POM128739  Trifolium depauperatum var. amplectens F. W. Peirson 1927-4-19 7252 San Diego Headland South of Torrey Pines Comment
  POM175540  Zigadenus venenosus var. venenosus Frank W. Peirson 1923-3-26 4102 San Diego 1 mile South of Torrey Pines. La Jolla. Comment
  POM17781  Erigeron divergens F. W. Peirson 1923-3-27 3365 San Diego Otay Creek. 2 miles below dam and at about 250 ft. 76 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
  POM47630  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1924-6-27 4884 San Diego Monument Peak, Laguna Mts. Comment
  RSA100201  Lonicera subspicata var. denudata F. W. Peirson 1924-6-25 4862 San Diego Top of ridge east of Laguna Lakes, Laguna Mountains. Comment
  RSA377454  Calochortus splendens Frank W. Peirson 1924-7-22 s.n. San Diego Palomar. [city now Palomar Mountain] 1616 Comment
  RSA440743  Trichostema parishii F. W. Peirson 1924-6-24 4878 San Diego South side Palomar 1220 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
  RSA66197  Arabis pulchra F. W. Peirson 1927-4-17 7229 San Diego Summit of Mt. Springs Grade, eastern San Diego Co. 1067 Comment
  RSA66751  Caulanthus heterophyllus F. W. Peirson 1929-5-4 8345 San Diego Trail from Oak Grove to Palomar Mt. Comment
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Feb 12 2009
  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
  RSA69468  Mirabilis multiflora var. pubescens F. W. Peirson 1924-6-26 4879 San Diego Lower part of Vallecito Canyon. Comment
  RSA69612  Lilaea scilloides F. W. Peirson 1924-6-24 4830 San Diego South of Cuyamaca Lake. 1433 Comment
  RSA70131  Brodiaea terrestris subsp. kernensis F. W. Peirson 1924-6-25 4834 San Diego near old Rangers Cabin, Laguna Lakes region, Laguna Mtns. Comment
  RSA70217  Allium campanulatum F. W. Peirson 1924-6-22 4797 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA70270  Juncus phaeocephalus var. paniculatus F. W. Peirson 1920-6-24 1644 San Diego Morgan Hill, Palomar Mountains. 1433 Comment
  RSA70378  Euphorbia palmeri F. W. Peirson 1920-6-24 2201 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA70428  Ditaxis lanceolata F. W. Peirson 1928-4-22 7877 San Diego steep rocky canyon immediately west of the Narrows, San Felipe Creek. Comment
  RSA70474  Limnanthes gracilis subsp. parishii F. W. Peirson 1925-5-18 5984 San Diego Camp ground at Cuyamaca Lake 1402 Comment
  RSA70532  Chamaesyce melanadenia F. W. Peirson 1928-4-20 7860 San Diego San Felipe creek near foot of Sentenac Canyon , eastern San Diego Co. Comment
  RSA70617  Chamaesyce melanadenia F. W. Peirson 1924-6-26 4865 San Diego Lower part of Vallecito Canyon Comment
  RSA70862  Arctostaphylos glauca F. W. Peirson 1927-4-18 7233 San Diego About 1/2 way from Newtown to Buckman Sps. Comment
  RSA70869  Arctostaphylos pringlei subsp. drupacea F. W. Peirson 1920-5-24 2197 San Diego east trail to Palomar Mt. 1738 Comment
  RSA70880  Arctostaphylos glandulosa subsp. glandulosa F. W. Peirson 1926-5-1 6717 San Diego Along trail from Oak Grove to Palomar Mt. 1524 Comment
  RSA71013  Dichondra occidentalis F. W. Peirson 1927-4-19 7250 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA71808  Ipomopsis tenuifolia F. W. Peirson 1927-4-17 7222 San Diego Just north of Boulevard, at head of Mountain Springs Grade. 1067 Comment
  RSA72257  Camissonia cheiranthifolia subsp. suffruticosa F. W. Peirson 1923-3-26 3408 San Diego Agua Hedionda Comment
  RSA72310  Gilia diegensis F. W. Peirson 1925-5-16 5930 San Diego About 1 mile north of Laguna Lakes camp, Laguna Mouintains. Comment
  RSA72313  Gilia diegensis F. W. Peirson 1925-5-15 5903 San Diego 4 miles south of Buckman Spring. 1159 Comment
  RSA73052  Leptosiphon androsaceus F. W. Peirson 1929-5-5 73052 San Diego South slope of divide between Oak Grove and Warner's Hot Springs. 915 Comment
  RSA73059  Leptosiphon ciliatus F. W. Peirson 1920-6-24 2172 San Diego Meadow at foot of Morgan Hill, Palomar Mts. Comment
  RSA73127  Navarretia hamata F. W. Peirson 1924-6-21 4770 San Diego Benches southeast of Pala 244 Comment
  RSA73132  Navarretia hamata F. W. Peirson 1915-6-27 954 San Diego Torrey Pines. Comment
  RSA73145  Navarretia hamata F. W. Peirson 1920-6-25 2196 San Diego Grae east of Ramona, San Diego Co., California Comment
  RSA73286  Linanthus pungens subsp. hallii F. W. Peirson 1927-4-17 7227 San Diego South of boulevard on Mountain Springs Grade 1128 Comment
  RSA74952  Phacelia distans F. W. Peirson 1923-3-26 3384 San Diego Agua Hedionda Comment
  RSA75385  Camissonia strigulosa F. W. Peirson 1924-6-24 4819 San Diego Henshaw Grade, Palomar Mts. 1220 Comment
  RSA75868  Nemophila menziesii var. menziesii F. W. Peirson 1929-3-31 8286 San Diego Foot of flat below Banner, Foster Grade east of Julian. Comment
  RSA76956  Stillingia linearifolia F. W. Peirson 1925-5-20 6009 San Diego About 2 miles north of Oak Grove, San Diego. Comment
  RSA77160  Ceanothus leucodermis F. W. Peirson 1926-5-1 6712 San Diego Along trail from Oak Grove to Palomar Mt. Comment
  RSA77166  Ceanothus leucodermis F. W. Peirson 1925-5-17 5950 San Diego Lower part of Vallecito Canyon. Comment
  RSA77191  Horsfordia newberryi F. W. Peirson 1928-4-22 7874 San Diego San Felipe Creek about 4 miles below Sentenac Canyon. Comment
  RSA77731  Viola purpurea subsp. quercetorum F. W. Peirson 1930-5-11 8780 San Diego near Henshaw Dam. 854 Comment
  RSA77864  Pectocarya platycarpa F. W. Peirson 1922-4-13 2854 San Diego Mountain Springs Grade, eastern San Diego County on road to Imperial Valley from San Diego. 366 Comment
  RSA79612  Cryptantha intermedia F. W. Peirson 1927-4-19 7245 San Diego Headland south of Torrey Pines, Comment
  RSA80062  Mimulus diffusus F. W. Peirson 1920-6-24 2183 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA80080  Mimulus diffusus F. W. Peirson 1925-5-15 5919 San Diego Laguna Lakes 1677 Comment
  RSA80221  Penstemon clevelandii F. W. Peirson 1928-3-24 7732 San Diego San Felipe Creek, Sentenac Canyon. Comment
  RSA80225  Penstemon clevelandii subsp. connatus F. W. Peirson 1925-5-17 5957 San Diego At foot of steep part of trail from Vallecito Canyon to Laguna Mountains Comment
  RSA80307  Orthocarpus densiflorus var. gracilis F. W. Peirson 1923-3-27 3372 San Diego Otay Creek. 30 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
  RSA80723  Mimulus pilosus F. W. Peirson 1920-6-24 269 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA80829  Pedicularis densiflora F. W. Peirson 1922-4-29 4063 San Diego 1 mile east of Dripping Springs, Temecula River. 518 Comment
Read comments
Dec 13 2012
  RSA81008  Tamarix parviflora F. W. Peirson 1923-3-28 4110 San Diego On boulevard about 10-15 miles south opf Temecula Comment
  RSA82103  Mimulus aurantiacus var. aridus F. W. Peirson 1927-4-17 7223 San Diego Just north of Boulevard, at head of Mountain Springs Grade. 1067 Comment
  RSA82106  Mimulus aurantiacus var. puniceus F. W. Peirson 1922-4-14 1147 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  RSA82567  Stachys rigida subsp. quercetorum F. W. Peirson 1927-4-19 7236 San Diego Headland south of Torrey Pines, Comment
  RSA83419  Dudleya saxosa subsp. aloides F. W. Peirson 1924-6-23 4813 San Diego N slope of Doane Valley, Palomar Mts. 1524 Comment
  RSA83937  Ranunculus californicus F. W. Peirson 1925-5-15 5909 San Diego Laguna Lakes, Laguna Mountains. Comment
  RSA84839  Ribes nevadense F. W. Peirson 1926-5-1 6714 San Diego Sour Dough Spring, east trail from Palomar Mt. to Oak Grove. Comment
  RSA84942  Ribes roezlii F. W. Peirson 1926-5-1 6715 San Diego Sour Dough Spring, east trail from Palomar Mt. to Oak Grove. Comment
  RSA85733  Potentilla gracilis var. fastigiata F. W. Peirson 1920-6-24 2182 San Diego East trail up to Palomar Mountain 1707 Comment
  RSA86992  Cercis occidentalis F. W. Peirson 1924-6-26 4868 San Diego At foot of steep portion of trail from Vallecito Canyon to Laguna Mts. Comment
  RSA87064  Hordeum marinum subsp. gussoneanum F. W. Peirson 1925-5-18 5992 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains 1402 Comment
  RSA87345  Lupinus concinnus subsp. optatus F. W. Peirson 1929-5-4 8355 San Diego On trail from Oak Grove to Palomar Mtn. 1067 Comment
  SD87561  Allium haematochiton Frank W. Peirson 1922-4-14 2914 San Diego Torrey Pines. Comment
  SD87700  Galium andrewsii subsp. andrewsii F. W. Peirson 1920-6-24 San Diego Palomar, East Trail (IPB 9/06) 1520 Comment
  SD87789  Antirrhinum nuttallianum subsp. nuttallianum Frank W. Peirson 1923-3-26 3415 San Diego Agua Hedionda, abundant in low bushes in saline flat back of beach Comment
  SD87870  Collinsia childii F. W. Peirson 1920-6-24 2190 San Diego Palomar, meadow, east foot of Morgan Hill (IPB 10/06) 1430 Comment
  UC501579  Lotus hamatus Frank W. Peirson 1926-4-30 6696 San Diego about 1 mi from Pala (on the road to Henshaw Dam) 167 Comment
  UC511924  Phacelia Frank W. Peirson 1928-4-20 7929 San Diego San Felipe Creek Sentenac Canyon (at foot of canyon) Comment
  UC566731  Porophyllum gracile Frank W. Peirson 1927-4-17 7221 San Diego summit of, n of boulevard Mountain Springs Grade Comment
  UC581530  Viola lobata subsp. integrifolia Frank W. Peirson 1925-5-19 5996 a San Diego Middle Peak; Cuyamaca Mountains, Middle Peak 1676 Comment
  UC640213  Ericameria paniculata Frank W. Peirson 1938-11-12 12638 San Diego just above The Narrows; San Felipe Canyon Comment
  UC908863  Gilia stellata Frank W. Peirson 1928-3-24 7750 San Diego about 2 mi below Sentenac Canyon (San Felipe Canyon); , below Sentenac Canyon Comment
  UCR129700  Zigadenus venenosus F. W. Peirson 1923-3-26 4102 San Diego South Coast, southward from Torrey Pines 152 Comment
  UCR136644  Rhamnus californica subsp. tomentella F. W. Peirson 1924-6-22 4796 San Diego Peninsular Ranges; Palomar Mountains, Mt. Palomar, near country club, at the top of grade 1616 Comment
  UCR142886  Navarretia hamata subsp. hamata F. W. Peirson 1924-6-21 4770 San Diego Peninsular Range, benches SE of Pala [along Hwy 76 above the San Luis Rey River] 244 Comment
  UCR168495  Holcus lanatus F. W. Peirson 1924-6-22 4800 San Diego Peninsular Ranges; Palomar Mountains, Mt. Palomar, near country club, at the top of grade 1616 Comment
  CAS-BOT-BC515149  Eriastrum sapphirinum subsp. sapphirinum F. W. Peirson 1920-6-23 2299 San Diego Oak Grove 1158 Comment
  POM43354  Potentilla norvegica subsp. monspeliensis F. W. Peirson 1924-6-24 4829 San Diego Margin of Cuyamaca Lake. 1402 Comment
  RSA0019608  Ranunculus californicus var. austromontanus F. W. Peirson 1924-6-22 4794 San Diego Palomar, near country club. 1585 Comment
  RSA0034419  Potentilla norvegica subsp. monspeliensis F. W. Peirson 1925-5-18 4829 San Diego Margins of Cuyamaca Lake. 1402 Comment
  RSA0041598  Thysanocarpus curvipes F. W. Peirson 1930-5-11 8783 San Diego Henshaw Dam. 854 Comment
  RSA0105812  Eriastrum densifolium subsp. austromontanum F. W. Peirson 1924-6-24 4810 San Diego S. slope Palomar [Mountain], near summit. Comment
  RSA0122047  Eriastrum sapphirinum subsp. dasyanthum F. W. Peirson 1915-7-1 4473 San Diego Pala, San Diego County, California. Comment
  RSA128758  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1927-4-18 7233 San Diego About 1/2 way from Newtown to Buckman Sps. Comment
  RSA90078  Lotus argophyllus var. argophyllus F. W. Peirson 1928-4-21 7867 San Diego Junction of Grapevine Canyon and San Felipe Creek, eastern San Diego County. Comment
  RSA90368  Lotus heermannii var. heermannii F. W. Peirson 1920-6-24 4088 San Diego East foot of Morgan Hill, Palomar Mts. 1433 Comment
  RSA90989  Trifolium wormskioldii F. W. Peirson 1925-5-19 6004 San Diego San Luis Ray River. 915 Comment
  RSA91249  Vicia americana F. W. Peirson 1920-6-24 2175 a San Diego Trail from Oak Grove to Palomar Mountain 1677 Comment
  RSA91427  Marina parryi F. W. Peirson 1928-7-24 7744 San Diego San Felipe Creek about 2 miles below Sentenac Canyon, eastern San Diego County Comment
  RSA91696  Gnaphalium palustre F. W. Peirson 1920-6-25 2493 San Diego from Oak Grove to Warners Hot Springs. 915 Comment
  RSA91984  Holcus lanatus F. W. Peirson 1924-6-22 4800 San Diego West of Country Club, Palomar Mts. 1616 Comment
  RSA92260  Porophyllum gracile F. W. Peirson 1927-4-17 7221 San Diego On north side of boulevard at head of Mountain Springs Grade, eastern San Diego Co. Comment
  RSA92329  Poa secunda F. W. Peirson 1925-5-18 5991 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains 1402 Comment
  RSA92499  Stylocline gnaphaloides F. W. Peirson 1927-4-19 7244 San Diego Headland south of Torrey Pines, Comment
  RSA92540  Eriophyllum wallacei F. W. Peirson 1925-5-16 5935 San Diego Along ridge 1 mile N of Public Camp Laguna Lakes, Laguna Mts 1677 Comment
  RSA92989  Lasthenia coronaria F. W. Peirson 1927-4-19 7248 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA93108  Erigeron divergens F. W. Peirson 1923-3-27 3365 San Diego Otay Creek. 76 Comment
  RSA93444  Brickellia frutescens F. W. Peirson 1928-4-20 7848 San Diego San Felipe creek, 2 miles west of Sentenac Canyon, eastern San Diego County Comment
  RSA94386  Dyssodia porophylloides F. W. Peirson 1925-5-15 5889 San Diego summit of Mountain Springs Grade, eastern San Diego 1067 Comment
  RSA95205  Microseris heterocarpa F. W. Peirson 1927-4-19 7255 San Diego edge of bluff above sea; headland south of Torrey Pines 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
  RSA97378  Sanicula bipinnatifida F. W. Peirson 1922-4-14 2880 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  SEINET8003290  Myrica californica Frank W. Peirson 1938-4-13 No determinado San Diego Santa Barbara, Santa Barbara California Comment
  PASA2797  Erigeron salsuginosus F. W. Peirson 1921-8-9 San Francisco Aspen Meadows (S.F. San Joaquin) 2514 Comment
  POM20548  Lupinus arboreus var. arboreus F. W. Peirson 1923-6-26 s.n. San Luis Obispo Arroyo Grande. Comment
  RSA77808  Cynoglossum grande F. W. Peirson 1925-3-24 5664 San Luis Obispo Morro Creek Divide. 427 Comment
  RSA85068  Castilleja miniata F. W. Peirson 1932-7-4 10240 San Luis Obispo Oceano. Comment
  RSA88861  Carex praegracilis F. W. Peirson 1925-3-25 5677 San Luis Obispo Morro. Comment
  UCR136642  Agrostis viridis F. W. Peirson 1932-7-4 10239 San Luis Obispo Central Coast, Oceano 3 Comment
  CAS-BOT-BC118542  Carex praegracilis Frank Warrington Peirson 1925-3-25 5677 San Luis Obispo Sandy land back of beach, Morro. Comment
  CAS-BOT-BC81666  Ephedra californica Frank W. Peirson 1938-8-12 12381 San Luis Obispo Cuyama Valley Comment
  PASA1224  Muilla serotina Frank W. Peirson 1925-3-25 San Luis Obispo Piamo Creek 30 Comment
  RSA0004736  Eriastrum densifolium subsp. densifolium F. W. Peirson 1920-7-29 2224 San Luis Obispo 1 mile south of Pismo Beach. Comment
  RSA65399  Atriplex californica F. W. Peirson 1920-8-1 1822 San Luis Obispo Morro Inlet. Comment
  RSA66113  Cardamine californica var. integrifolia F. W. Peirson 1925-3-24 5662 San Luis Obispo Morro Creek Divide. 427 Comment
  RSA70480  Limnanthes douglasii subsp. douglasii F. W. Peirson 1925-3-24 5658 San Luis Obispo 1 mile west of Atascadero on the Morro Road. Comment
  RSA85170  Ephedra californica F. W. Peirson 1938-4-12 12381 San Luis Obispo Cuyama Valley in extreme southeast corner of San Luis Obispo County Comment
  RSA90879  Carex spissa F. W. Peirson 1920-7-30 2218 San Luis Obispo Willow Creek, near Morro. Comment
  RSA91494  Scirpus microcarpus F. W. Peirson 1920-7-30 2236 San Luis Obispo Near sea level, Toro Creek, Morro Region 0 Comment
  RSA91993  Polypogon monspeliensis F. W. Peirson 1932-7-4 10238 San Luis Obispo Oceano. Comment
  RSA94114  Hemizonia fasciculata F. W. Peirson 1923-6-26 4149 San Luis Obispo S outskirts of San Luis Obispo Comment
  RSA94712  Senecio blochmaniae F. W. Peirson 1920-7-29 2223 San Luis Obispo 1 mile south of Pismo Beach. Comment
  RSA97265  Lomatium caruifolium F. W. Peirson 1925-3-25 5685 San Luis Obispo Between Morro and San Luis Obispo Comment
  CAS-BOT-BC157023  Solanum umbelliferum F. W. Peirson 1938-4-13 12386 Santa Barbara Surf Comment
  CAS-BOT-BC178963  Chorizanthe angustifolia Frank W. Peirson 1929-4-20 8310 Santa Barbara Surf Comment
  JEPS20503  Pseudognaphalium californicum Frank W. Peirson 1929-5-17 8375 Santa Barbara Surf Comment
  JEPS44778  Adenostoma fasciculatum Mabel Peirson Apr 12 1927-Apr 14 1927 Santa Barbara Santa Cruz Isl., Prisoner's Cove Comment
  JEPS45586  Cercocarpus betuloides var. blancheae Mabel Peirson Apr 12 1927-Apr 14 1927 Santa Barbara Ladie's Harbor, Santa Cruz Island Ladie's Harbor; Santa Cruz Island, Ladie's Harbor 152 Comment
  JEPS45614  Aphanes occidentalis Mabel Peirson Apr 12 1927-Apr 14 1927 Santa Barbara Santa Cruz Island Prisoner's Cove; , Prisoners Cove Comment
  PASA1209  Alchemilla arvensis Mabel B. Peirson 1927-4-14 Santa Barbara Prisoners' Cove, Santa Cruz Island Comment
  POM203886  Senecio aphanactis F. W. Peirson 1934-3-25 11033 Santa Barbara Santa Cruz Island. Near Fry's Harbor Comment
  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
  RSA65754  Stellaria nitens F. W. Peirson 1934-3-27 11067 Santa Barbara Santa Cruz Island. Upper part of Frye Creek Basin, Fryes Harbor 518 Comment
  RSA65804  Lepidium virginicum var. robinsonii F. W. Peirson 1934-3-25 11032 Santa Barbara Santa Cruz Island. Near Fry s Harbor Comment
  RSA66602  Thysanocarpus laciniatus Mabel Peirson 1934-3-26 s.n. Santa Barbara Santa Cruz Island. Prisoners Cove. Comment
  RSA69392  Thalictrum polycarpum F. W. Peirson 1929-4-20 8288 Santa Barbara El Capitan Auto Camp, Northwest of Santa Barbara County. Comment
  RSA71098  Calystegia macrostegia subsp. cyclostegia F. W. Peirson 1929-5-17 8376 Santa Barbara On sand dunes at Surf. Comment
  RSA76036  Pholistoma racemosum F. W. Peirson 1934-3-26 11056 Santa Barbara Santa Cruz Island. Frye's Harbor. Comment
  RSA77355  Ceanothus ramulosus var. fascicularis F. W. Peirson 1925-3-26 5704 Santa Barbara Cebada Canyon. 183 Comment
  RSA82100  Mimulus aurantiacus var. pubescens F. W. Peirson 1934-3-29 11090 Santa Barbara Santa Cruz Island. Frye's Creek, a mile or more inland. Comment
  RSA84364  Lithophragma cymbalaria F. W. Peirson 1934-3-26 11057 Santa Barbara Santa Cruz Island. East slope of canyon, Frye s Harbor. 122 Comment
  RSA84957  Ribes speciosum F. W. Peirson 1925-3-26 5710 Santa Barbara Side canyon at Gaviota Pass. 183 Comment
  RSA84961  Ribes thacherianum F. W. Peirson 1934-3-28 11077 Santa Barbara Santa Cruz Island. Diablo Canyon, about 1 mile west of Frye s Harbor Comment
  RSA85037  Dryopteris arguta F. W. Peirson 1934-3-26 11055 Santa Barbara in canyon, along stream; Frye's Harbor, Santa Cruz Island Comment
  RSA86348  Pinus muricata Mabel Peirson 1927-4-12 7261 Santa Barbara Santa Cruz Island. Comment
  RSA86679  Cercocarpus betuloides var. blancheae Mabel Peirson 1927-4-12 7151 Santa Barbara Santa Cruz Island. Lady's Harbor. 152 Comment
  RSA87008  Myrica californica F. W. Peirson 1938-4-13 12385 Santa Barbara 0.5 miles up stream on Bear Creek, about 2 miles south of Surf. Comment
  RSA87081  Lupinus nanus subsp. nanus F. W. Peirson 1938-4-13 12383 Santa Barbara At Surf, Santa Barbara County Comment
  RSA87341  Muhlenbergia microsperma F. W. Peirson 1934-3-26 11060 Santa Barbara Santa Cruz Island. Frye's Harbor. Comment
  UCR143143  Myrica californica F. W. Peirson 1938-4-13 12385 Santa Barbara Central Coast, Bear Creek, about 2 miles south of Surf and station 0.5 mile up stream 61 Comment
  UCR17900  Camissonia campestris F. W. Peirson 1929-5-18 8397 Santa Barbara Central Coast, Cuyama Valley, 17 mi east of Coast Boulevard [presumably 17 mi east of modern Hwy 101 at Santa Maria] 366 Comment
  CAS-BOT-BC422613  Hesperomecon linearis Frank W. Peirson 1929-4-20 8319 Santa Barbara Along the Lompoc road about 2 miles from Surf 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
  RSA0059185  Orobanche uniflora subsp. occidentalis Frank W. Peirson 1934-3-29 11088 Santa Barbara Banks of Frye's Inlet, Santa Cruz Island. Comment
  RSA447394  Stachys bullata F. W. Peirson 1929-5-17 8366 Santa Barbara Lompoc road 1 mile east of Surf. Comment
  RSA66109  Cardamine californica var. integrifolia Mabel Peirson 1927-4-12 7134 Santa Barbara Lady s Harbor, Santa Cruz Island Comment
  RSA72284  Gilia clivorum F. W. Peirson 1934-3-25 11039 Santa Barbara Santa Cruz Island. West of canyon at Frye's Harbor, Comment
  RSA73305  Clarkia bottae F. W. Peirson 1920-7-29 2215 Santa Barbara 1 mile up south side of Gaviota Grade. Comment
  RSA82225  Verbena lasiostachys F. W. Peirson 1920-7-28 4143 Santa Barbara Canada del Refugio. 0 Comment
  RSA84990  Ruppia cirrhosa F. W. Peirson 1920-7-28 2836 Santa Barbara Canada del Refugio, at sea level. 0 Comment
  RSA85869  Fragaria californica F. W. Peirson 1929-4-20 8326 Santa Barbara 2-3 miles west of Las Cruces Bench Mark 283 Comment
  RSA90295  Lotus grandiflorus F. W. Peirson 1925-3-27 5723 Santa Barbara Hills back of Santa Barbara Comment
  RSA90315  Lotus dendroideus var. dendroideus Mabel Peirson 1927-4-12 7123 Santa Barbara Santa Cruz Island. Lady's Harbor. 152 Comment
  RSA90337  Lotus scoparius F. W. Peirson 1925-3-26 5698 Santa Barbara On summit of road to Lompoc via Cebada Canyon. 335 Comment
  RSA90717  Astragalus nuttallii F. W. Peirson 1929-4-20 8303 Santa Barbara Surf. Comment
  RSA91350  Lupinus arboreus F. W. Peirson 1929-4-20 8302 Santa Barbara La Purissima Mission, north of Lompoc. Comment
  RSA91483  Schoenoplectus maritimus F. W. Peirson 1920-6-28 2849 Santa Barbara Canada del Refugio. Sea level. 0 Comment
  RSA92534  Eriophyllum staechadifolium F. W. Peirson 1929-5-17 8256 Santa Barbara On sand dunes at Surf. Comment
  RSA94620  Venegasia carpesioides F. W. Peirson 1925-3-26 5716 Santa Barbara El Capitan Camp, on seashore northwest of Santa Barbara Comment
  RSA94687  Senecio aphanactis F. W. Peirson 1934-3-25 11033 Santa Barbara Santa Cruz Island. West of Fryes Harbor Comment
  RSA95046  Malacothrix saxatilis var. saxatilis F. W. Peirson 1929-4-20 8298 Santa Barbara El Capitan Auto Camp, on coast west of Santa Barbara. Comment
  RSA95114  Agoseris heterophylla var. cryptopleura F. W. Peirson 1925-3-26 5708 Santa Barbara Near La Purissima Mission, Buelton. 152 Comment
  RSA97350  Sanicula arguta F. W. Peirson 1934-3-26 11062 Santa Barbara Santa Cruz Island. Ridge west of canyon at Frye s Harbor. Comment
  SD87757  Thysanocarpus curvipes subsp. elegans Frank W. Peirson 1929-4-20 8316 Santa Barbara Grassy hill slope, 2.0 miles inland from surf. Comment
  POM20552  Polygala californica F. W. Peirson 1923-6-29 s.n. Santa Cruz Santa Cruz Mountains Comment
  RSA66488  Eschscholzia californica subsp. californica F. W. Peirson 1912-6-28 1887 Santa Cruz Santa Cruz. Comment
  RSA69811  Centaurium davyi F. W. Peirson 1925-8-4 6333 Santa Cruz About one mile from Boulder, along San Lorenzo River. Comment
  RSA84350  Boykinia occidentalis F. W. Peirson 1925-8-4 6476 Santa Cruz San Lorenzo River about 1 mile from Boulder. Comment
  UCR66596  Navarretia squarrosa F. W. Peirson 1925-8-3 6331 Santa Cruz San Lorenzo River, about 1 mile from Boulder Comment
  RSA0066162  Heuchera micrantha var. hartwegii F. W. Peirson 1912-6-29 683 Santa Cruz State Park. Santa Cruz Mtns. Comment
  RSA68803  Delphinium nudicaule F. W. Peirson 1923-6-29 4169 Santa Cruz Santa Cruz Mts. Along boulevard near summit. Comment
  RSA84296  Tiarella trifoliata var. unifoliata F. W. Peirson 1912-6-29 1947 Santa Cruz State Park. Santa Cruz Mtns. Comment
  RSA91763  Adenocaulon bicolor F. W. Peirson 1923-6-28 3894 Santa Cruz West slope of Santa Cruz Mts. Comment
  RSA92846  Madia madioides F. W. Peirson 1923-6-29 5283 Santa Cruz Along boulevard, Santa Cruz Mountains Comment
  RSA93208  Baccharis douglasii F. W. Peirson 1925-8-4 6327 Santa Cruz Roadside near San Lorenzo River, about 1 mile from Boulder Comment
  RSA95402  Ceanothus incanus F. W. Peirson 1925-8-4 6330 Santa Cruz Santa Cruz County; along San Lorenzo River, 1 mile from Boulder Comment
  LA96476  Mimulus nanus var. mephiticus Frank W. Peirson; 1932-7-16 10309 Shasta Burney Spring 1432 Comment
  RSA65032  Silene occidentalis F. W. Peirson 1932-7-16 10307 Shasta Burney Spring. 1433 Comment
  RSA704790  Collinsia torreyi var. latifolia F. W. Peirson 1932-7-9 10295 Shasta Burney Springs, 1433 Comment
  RSA70832  Arctostaphylos nevadensis F. W. Peirson 1932-7-10 10191 Shasta Interlake Area, Thousand-Lake Basin. 1951 Comment
  RSA766344  Eriogonum marifolium F. W. Peirson 1932-7-13 10140 Shasta 1000-Lake Basin. 1951 Comment
  RSA76997  Acer glabrum var. torreyi F. W. Peirson 1932-7-12 10178 Shasta On north slope of Red Crater, 1000 Lake Basin 1982 Comment
  RSA85218  Horkelia fusca var. brownii F. W. Peirson 1932-7-9 10274 Shasta Below Burney Spring 1433 Comment
  RSA85249  Spiraea douglasii F. W. Peirson 1932-7-10 10162 Shasta Thousand-Lake Basin. 1951 Comment
  RSA85296  Ranunculus occidentalis var. ultramontanus F. W. Peirson 1932-7-9 10285 Shasta Below Burney Spring 1433 Comment
  RSA86844  Prunus virginiana var. melanocarpa F. W. Peirson 1932-7-16 10306 Shasta Near 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
  SD87610  Silene lemmonii Frank W. Peirson 1932-7-9 10272 Shasta Burney Spring. 1430 Comment
Read comments
Jul 10 2010
  SD87768  Lonicera conjugialis Frank W. Peirson 1932-7-12 10223 Shasta One Thousand Lake Basin; along the shore of Lake Eiler. 1950 Comment
  UC501440  Linanthus harknessii Frank W. Peirson 1932-7-9 10287 Shasta Burney Spring 1432 Comment
  UC501446  Arnica dealbata Frank W. Peirson 1932-7-14 10236 Shasta s of Burney; 1000 Lake Basin 1950 Comment
  UC501472  Epilobium hallianum Frank W. Peirson 1932-7-14 10187 Shasta w Lake Eiler (s of Burney); 1000-Lake Basin 1950 Comment
  UC501481  Mentzelia dispersa Frank W. Peirson 1932-7-9 10275 Shasta Burney Spring 1432 Comment
  UC501540  Saxifraga aprica Frank W. Peirson 1932-7-11 10157 Shasta s of Burney; 1000 Lake Basin 1950 Comment
  UC501585  Horkelia tridentata subsp. tridentata Frank W. Peirson 1932-7-9 Shasta Burney Spring 1432 Comment
  UC696740  Penstemon neotericus Frank W. Peirson 1932-7-14 10219 a Shasta rocky locations on ridge e Lake Eiler (1000-Lake Basin, eastern Shasta County); 1000-Lake Basin, e of Lake Eiler 1950 Comment
  UCR136620  Collinsia torreyi F. W. Peirson 1932-7-12 10209 Shasta 1000-lake Basin [Thousand Lakes Valley], southward from Burney 2012 Comment
  CAS-BOT-BC60757  Physaria occidentalis Frank W. Peirson 1926-6-23 6837 Shasta Trail to summit of Lassen Peak. Upper part of trail. Comment
  POM203542  Hesperolinon micranthum F. W. Peirson 1932-7-16 s.n. Shasta Burney Spring 1433 Comment
  RSA0084029  Potentilla breweri F. W. Peirson 1932-7-13 s.n. Shasta In Big Meadow, Thousand-Lake Basin. 1951 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
  RSA66729  Galium bolanderi F. W. Peirson 1932-7-16 10300 Shasta Burney Spring. 1433 Comment
  RSA69504  Luzula comosa var. laxa F. W. Peirson 1932-7-12 10124 Shasta Thousand-Lake Basin. 1951 Comment
  RSA69600  Sagittaria cuneata F. W. Peirson 1932-7-14 10105 Shasta Thousand-Lake Basin. 1951 Comment
  RSA69714  Mentzelia dispersa F. W. Peirson 1932-7-9 10275 Shasta Burney Spring. 1433 Comment
  RSA70067  Piperia unalascensis Frank W. Peirson 1932-7-12 10132 Shasta Thousand-Lake Basin. 1951 Comment
  RSA70293  Juncus mertensianus F. W. Peirson 1932-7-15 10122 Shasta Shasta County: E slope of Magee, Thousand Lake Basin 2195 Comment
  RSA73734  Navarretia intertexta F. W. Peirson 1932-7-16 10311 Shasta Burney Spring. 1433 Comment
  RSA77492  Cicuta douglasii F. W. Peirson 1932-7-17 10320 Shasta moist shaded places, Wallace Ranch, Goose Velley. 915 Comment
  RSA80074  Mimulus torreyi F. W. Peirson 1932-7-9 10293 Shasta Burney Spring. 1433 Comment
  RSA80106  Erythranthe pulsiferae F. W. Peirson 1932-7-17 10329 Shasta Wallace Ranch, Goose Valley 915 Comment
  RSA82340  Scutellaria californica F. W. Peirson 1932-7-9 10283 Shasta Burney Spring. 1433 Comment
  RSA85744  Potentilla flabellifolia F. W. Peirson 1926-6-23 6830 Shasta Trail to summit of Lassen Peak, Lassen National Park. Comment
  RSA85828  Cupressus macnabiana F. W. Peirson 1932-7-16 10302 Shasta At end of road going to Thousand-Lake Basin 1524 Comment
  RSA88674  Carex lenticularis var. lipocarpa F. W. Peirson 1932-7-12 10118 Shasta N slope of Red Crater. Thousand Lake Basin. 1982 Comment
  RSA91051  Carex preslii F. W. Peirson 1932-7-15 10117 Shasta At east foot of Magee, Thousand-Lake Basin. 2195 Comment
  RSA91693  Bromus orcuttianus F. W. Peirson 1932-7-16 10304 Shasta Burney Spring 1433 Comment
  RSA92236  Madia minima F. W. Peirson 1932-7-9 10298 Shasta Burney Spring. 1433 Comment
  RSA93634  Antennaria corymbosa F. W. Peirson 1932-7-15 10231 Shasta On E slope of Mt. Magee. Thousand Lake Basin. 2195 Comment
  RSA94623  Whitneya dealbata F. W. Peirson 1926-6-23 6833 Shasta Trail to summit of Lassen Peak, Lassen National Park Comment
  RSA95154  Hieracium horridum F. W. Peirson 1932-7-14 10228 Shasta South slope of Eiler Butte, Thousand-Lake Basin. 1982 Comment
  RSA99345  Sambucus caerulea F. W. Peirson 1932-7-13 10226 Shasta South of Big Meadow, Thousand-Lake Basin 2012 Comment
  SD87881  Trifolium kingii Frank W. Peirson 1932-7-13 10177 Shasta 1000 lake basin, south of Burney 1951 Comment
  SEINET7577166 Image available Carex subfusca Frank W. Peirson 1932-7-9 10865 Shasta Burney Spring. 1433 Comment
  RSA65867  Polygonum douglasii F. W. Peirson 1921-8-9 1802 Sierra South Fork of San Joaquin River 2515 Comment
  RSA85539  Cheilanthes gracillima F. W. Peirson 1914-08 1505 Sierra Devils Post Pile Comment
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Jul 4 2012
  RSA86272  Aspidotis densa F. W. Peirson 1921-8-9 1511 Sierra South Fork of San Joaquin River 2515 Comment
  RSA85261  Chamaebatiaria millefolium F. W. Peirson 1923-7-19 3753 Siskiyou Laird's landing. Comment
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Jun 20 2012
  PASA1715  Erigeron inornatus Frank W. Peirson 1923-7-20 Siskiyou 2 miles below Whitney Creek on the road to Weed Comment
  RSA69511  Veratrum californicum Frank W. Peirson 1923-7-20 3674 Siskiyou Just north of Sisson Comment
  RSA74837  Phacelia linearis F. W. Peirson 1923-7-19 3818 Siskiyou 20 miles north of Bray. Comment
  SEINET10463313  Campanula prenanthoides Frank W. Peirson 1926-7-11 Peirson 7023 Siskiyou HALF WAY UP GRADE, GRADE W OF ETNA OR ETNA MILLS Comment
  RSA65429  Atriplex subspicata F. W. Peirson 1925-9-26 6446 Solano Suisun Marshes. Along railroad track. Comment
  RSA90329  Lotus procumbens var. jepsonii F. W. Peirson 1908-7-11 2005 Trinity Little Kern River, Sierra Nevada. Comment
  CAS-BOT-BC42028  Draba albertina Frank W. Peirson 1908-7-23 653 Tulare Sierra Nevada. Sequoia National Park. Comment
  JEPS49539  Arctostaphylos viscida subsp. viscida Frank W. Peirson 1936-5-30 11826 Tulare along woodroad about 1 mi from Balch Park 1828 Comment
  PASA2035  Lepidium dictyotum Frank W. Peirson 1925-3-21 Tulare Lewis Creeek near Lindsay 213 Comment
  RSA65952  Eriogonum umbellatum var. chlorothamnus F. W. Peirson 1908-7-11 1762 Tulare Little Kern River. Comment
  RSA69399  Thalictrum sparsiflorum F. W. Peirson 1908-7-17 644 Tulare Crabtree Meadows, Sierra Nevada 3149 Comment
  RSA69429  Swertia perennis F. W. Peirson 1908-7-20 877 Tulare Junction Meadow, Sierra Nevada. 2439 Comment
  RSA72165  Epilobium anagallidifolium F. W. Peirson 1919-8-8 770 Tulare Twin Lake Cirque, Mt. Whitney region, Sierra Nevada 3659 Comment
  RSA72184  Epilobium glaberrimum subsp. fastigiatum F. W. Peirson 1908-7-13 2306 Tulare Volcano Creek, tributary of Kern River, Sierra Nevada 2439 Comment
  RSA76998  Staphylea bolanderi F. W. Peirson 1936-5-30 11819 Tulare About 4 miles above the control, on road to Balch Park. 1067 Comment
  RSA77485  Ceanothus pinetorum F. W. Peirson 1916-8-16 736 Tulare Upper Kern River Comment
  RSA77757  Viola lobata F. W. Peirson 1936-5-30 11823 Tulare Balch Park, Sierra Nevada. 1921 Comment
  RSA83955  Saxifraga oregana F. W. Peirson 1919-8-16 1939 Tulare in damp swale, Giant Forest, Sierra Nevada. 1982 Comment
  RSA83968  Saxifraga nidifica F. W. Peirson 1908-7-23 1938 Tulare Sequoia National Park. Sierra Nevada. Comment
  RSA85789  Potentilla breweri var. breweri F. W. Peirson 1908-07 s.n. Tulare Sequoia National Park, Sierra Nevada. Comment
  RSA88734  Carex heteroneura F. W. Peirson 1916-8-25 1630 Tulare Silver Lake, tributary to Little Kern river, Sierra Nevada 3201 Comment
  UC1199873  Dodecatheon hendersonii Peirson 1925-3-21 5590 Tulare Lewis Creek near Lindsey; Lewis Creek near Lindsey 289 Comment
  UCD91783  Poa secunda subsp. secunda F. W. Peirson 1925-3-20 5549 Tulare Between Ducor and Terrabella. Comment
  UCR17903  Plectritis ciliosa F. W. Peirson 1925-3-22 s.n. Tulare Southern Sierra Nevada Mtns., Middle Fork Tule River 457 Comment
  CAS-BOT-BC212088  Cornus nuttallii F. W. Peirson 1908-7-24 821 Tulare North fork Tule River Comment
  CAS-BOT-BC363120  Rigiopappus leptocladus F. W. Peirson 1925-3-21 5596 Tulare Near stream of Lewis Creek, near Lindsay 274 Comment
  RSA0012674  Senecio scorzonella F. W. Peirson 1916-8-25 1442 Tulare Silver Lake, Little Kern River tributary, Sierra Nevada. 3201 Comment
  RSA0029696  Delphinium parryi subsp. parryi F. W. Peirson 1908-7-10 638 Tulare Tule River. Comment
  RSA402019B  Orthocarpus erianthus F. W. Peirson 1925-3-21 s.n. Tulare Lewis Creek near Lindsay. 274 Comment
  RSA433746  Plectritis macrocera F. W. Peirson 1925-3-22 5614 Tulare Middle Fork of Tule River, Sierra Nevada. 457 Comment
  RSA65555  Minuartia californica F. W. Peirson 1925-3-21 5582 Tulare Lewis Creek near Lindsay. 213 Comment
  RSA66697  Dicentra nevadensis F. W. Peirson 1916-8-26 1893 Tulare Trail from Quinn's Horse Camp Comment
  RSA69039  Dodecatheon jeffreyi F. W. Peirson 1908-7-11 861 Tulare meadow above Nelson Comment
  RSA69537  Maianthemum stellatum Frank W. Peirson 1919-8-10 1683 Tulare Junction Meadow, Kern River Canyon, Sierra Nevada 2439 Comment
  RSA70135  Triteleia laxa F. W. Peirson 1925-3-21 5578 Tulare Lewis Creek, near Lindsay. 213 Comment
  RSA70142  Triteleia ixioides subsp. scabra F. W. Peirson 1908-7-10 1658 Tulare Tule River, Sierra Nevada. Comment
  RSA70828  Arctostaphylos patula F. W. Peirson 1919-8-11 834 Tulare Funston Camp, Kern River. 2043 Comment
  RSA72642  Wyethia ovata F. W. Peirson 1908-7-9 1327 Tulare Tule River, Sierra Nevada. Comment
  RSA73000  Leptosiphon filipes F. W. Peirson 1925-3-21 5571 Tulare Lewis Creek near Lindsay. 213 Comment
  RSA77056  Hydrophyllum occidentale F. W. Peirson 1908-7-10 s.n. Tulare Tule River between the Forks and Nelson, Sierra Nevada. Comment
  RSA80086  Mimulus floribundus F. W. Peirson 1919-8-12 1144 Tulare Rattlesnake Creek tributary to Kern River. 2744 Comment
  RSA80701  Circaea alpina subsp. pacifica F. W. Peirson 1908-7-10 2089 Tulare Nelson, on Tule River, Sierra Nevada 1524 Comment
  RSA80720  Mimulus pilosus F. W. Peirson 1916-8-12 1138 Tulare Tule River below Nelson, Sierra Nevada. Comment
  RSA80791  Pedicularis groenlandica F. W. Peirson 1908-7-10 1171 Tulare Tule River near Nelson, Sierra Nevada. Comment
  RSA82529  Verbascum thapsus F. W. Peirson 1916-8-12 1098 Tulare Tule River not far below Nelson. Sierra Nevada. Comment
  RSA83406  Monardella odoratissima subsp. pallida F. W. Peirson 1919-8-13 1071 Tulare Trail westward from Lake Franklin Pass, Silver Lakes. 2744 Comment
  RSA84265  Ranunculus aquatilis var. capillaceus F. W. Peirson 1919-8-7 1874 Tulare Lake above and E of Tyndall Creek on trail to Mt. Whitney. 3384 Comment
  RSA85273  Ceanothus velutinus F. W. Peirson 1919-8-9 739 Tulare Jct Meadows, Sierra Nevada. 2500 Comment
  RSA87099  Lupinus bicolor subsp. microphyllus F. W. Peirson 1926-3-28 6642 Tulare Kings River at main north and south boulevard. Comment
  RSA90408  Lotus oblongifolius var. cupreus F. W. Peirson 1908-7-10 2007 Tulare Tule River. Comment
  RSA91037  Erigeron coulteri F. W. Peirson 1919-8-10 1285 Tulare Junction Meadow, Kern River Canyon, Sierra Nevada 2439 Comment
  RSA91309  Vicia americana var. americana F. W. Peirson 1908-7-10 2014 Tulare Tule River, Sierra Nevada. Comment
  RSA91528  Trifolium willdenovii F. W. Peirson 1925-3-20 5548 Tulare Roadside between Ducor and Terrabella Comment
  RSA91665  Trisetum spicatum F. W. Peirson 1916-8-25 1602 Tulare Silver Lake, Little Kern tributary. 3201 Comment
  RSA91733  Achnatherum occidentale subsp. occidentale F. W. Peirson 1916-8-25 1584 Tulare Silver Lake, Little Kern River tributary, Sierra Nevada. 3201 Comment
  RSA91791  Adenocaulon bicolor F. W. Peirson 1908-1 1300 Tulare Sequoia National Park, Sierra Nevada. Comment
  RSA92885  Populus fremontii subsp. fremontii F. W. Peirson 1925-3-21 5599 Tulare Lewis Creek near Lindsay. 274 Comment
  RSA93646  Solidago multiradiata F. W. Peirson 1908-7-19 1233 a Tulare Junction Meadows, Sierra Nevada. 2439 Comment
  RSA93672  Antennaria media F. W. Peirson 1919-8-8 1309 Tulare Twin Lake Cirque, Mt. Whitney region, Sierra Nevada. 3506 Comment
  RSA95085  Microseris campestris F. W. Peirson 1925-3-21 5552 Tulare Lewis Creek, near Lindsay. 213 Comment
  RSA95126  Agoseris grandiflora F. W. Peirson 1908-7-9 1492 Tulare Tule River, Sierra Nevada. Comment
  RSA97284  Pteryxia terebinthina var. californica F. W. Peirson 1919-8-17 810 Tulare Patte Meadow, on trail from Giant Forest to Kings River, Sierra Nevada. 2835 Comment
  RSA99369  Lonicera conjugialis F. W. Peirson 1908-7-15 1195 Tulare Rock Creek Lake cirques; Sierra Nevada; Mt. Whitney region. Comment
  RSA84257  Parnassia palustris var. californica F. W. Peirson 1910-8-2 1949 Tuolumne Tamarack Flat, Yosemite National Park. 1982 Comment
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Jul 4 2012
  RSA84427  Aquilegia pubescens F. W. Peirson 1910-7-26 631 Tuolumne Mt. Dana, Seirra Nevada. Comment
  RSA86300  Ivesia lycopodioides subsp. lycopodioides F. W. Peirson 1927-8-3 7632 Tuolumne west slope of Mt. Dana, Sierra Nevada. 3659 Comment
  POM146792  Navarretia capillaris F. W. Peirson 1927-8-6 s.n. Tuolumne Porcupine Flats 2439 Comment
  RSA0016778  Hippuris vulgaris F. W. Peirson 1930-8-14 9222 Tuolumne Pool near river at Soda Spring, Tuolumne Meadows. 2622 Comment
  RSA66335  Polygonum kelloggii F. W. Peirson 1927-8-4 7637 Tuolumne Lower Tuolumne Meadows, Tuolumne County, alt 8400ft 2561 Comment
  RSA66523  Arabis platysperma var. howellii F. W. Peirson 1927-7-31 7610 Tuolumne Conness Trail near Young s Lake. Comment
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Nov 19 2019
  RSA68798  Delphinium polycladon F. W. Peirson 1910-1 639 Tuolumne Sierra Nevada Comment
  RSA69404  Delphinium nuttallianum F. W. Peirson 1927-7-31 7602 Tuolumne Trail from Tuolumne Meadows to Conness Peak. 2744 Comment
  RSA72302  Navarretia leptalea subsp. bicolor F. W. Peirson 1927-8-4 7638 Tuolumne Along Tuolumne River, below Meadows; Sierra Nevada 2530 Comment
  RSA77585  Mertensia ciliata var. stomatechoides G. B. Peirson 1914-1 1003 Tuolumne Merced Lake, Yosemite National Park, Sierra Nevada. Comment
  RSA83448  Mentha X piperita F. W. Peirson 1932-8-14 10410 Tuolumne Near Jamestown Comment
  RSA85242  Darmera peltata F. W. Peirson 1910-8-1 1942 Tuolumne S of Hetch Hetchy. Sierra Nevada. Comment
  RSA85270  Holodiscus discolor F. W. Peirson 1932-7-24 10402 Tuolumne Abundant on Stanislaus River, Sierra Nevada. 1890 Comment
  RSA88865  Carex raynoldsii F. W. Peirson 1927-7-31 7609 Tuolumne Trail from Tuolumne Meadows to Mt. Conness. 2744 Comment
  RSA90440  Astragalus kentrophyta var. danaus F. W. Peirson 1927-8-3 7625 Tuolumne Mt. Dana, Sierra Nevada, Tuolumne Co. California Comment
  RSA93146  Aster occidentalis F. W. Peirson 1930-8-14 9220 Tuolumne Tuolumne Meadows, Sierra Nevada. 2591 Comment
  RSA94853  Arnica longifolia subsp. myriadenia F. W. Peirson 1932-7-24 10398 Tuolumne Slopes above Relief Reservoir, Stanislaus River region, Sierra Nevada. 2287 Comment
  RSA95064  Hemizonia fitchii F. W. Peirson 1932-8-14 10413 Tuolumne Near Jamestown. 366 Comment
  UC501443  Arnica longifolia Frank W. Peirson 1932-7-24 10398 Tuolumne above, (along small stream on rocky slope, Stanislaus River region) Relief Reservoir; Stanislaus River 2286 Comment
  CAS-BOT-BC265284  Penstemon clevelandii subsp. connatus Frank W. Peirson 1922-4-10 1100 Unknown Murray Canon [Murray Canyon] Comment
  GH345629  Horkelia cuneata subsp. puberula F. W. Peirson 1919-4-5 362 Unknown Borders of Eaton Canyon, about 1/4 mile below the mountains. San Gabriel Mts. 365 Comment
  GH349859  Ceanothus oliganthus F. W. Peirson 1918-7-30 113 Unknown Toll Road, Mt. Wilson 1280 Comment
  GH386573  Brickellia microphylla F. W. Peirson 1920-9-15 2279 Unknown Lytle Creek Canyon, San Bernardino Mts. Comment
  GH386962  Baccharis salicina F. W. Peirson 1924-10-19 5228 Unknown roadside at Clearwater Comment
  GH425043  Ceanothus papillosus F. W. Peirson 1923-5-6 3492 Unknown Holy Jim Canyon, Santa Ana Mts 990 Comment
  SD87582  Callitriche verna F. W. Peirson 1919-8-24 2048 Unknown Rae Lake, bench above lake. 3275 Comment
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Jan 1 2016
  GH404058  Heterotheca oregona var. rudis F. W. Peirson 1941-7-29 13111 Unknown Stephens Grove State Park Comment
  NY180566  Lessingia germanorum var. peirsonii F. W. Peirson 1923-6-9 3550 Unknown Kings Canyon, Liebre Mts. Comment
  RSA77770  Viola glabella F. W. Peirson 1926-6-22 6818 Unknown Trail from Devil's Kitchen, Lassen National Park. Comment
  SEINET11981231  Viola purpurea F. W. Peirson 1918-1 118 Unknown Mt. San Antonio, San Gabriel Mts Comment
  SEINET12886161 Image available Salix nivalis F. W. Peirson 1934-1 11207 Unknown Comment
  SEINET12894735 Image available Salix nivalis F. W. Peirson 1934-1 11207 Unknown Comment
  SEINET7558595 Image available Carex filifolia var. erostrata F. W. Peirson 1935-7-17 11705 Unknown Rock Creek Lake Basin, Inyo. 3216 Comment
  CAS-BOT-BC205434  Lupinus excubitus var. austromontanus Frank W. Peirson 1925-4-18 5752 Ventura Sespe Creek 304 Comment
  CAS-BOT-BC225447  Gilia leptantha subsp. pinetorum Frank W. Peirson 1923-6-11 3580 Ventura Mt. Pinos 2316 Comment
  CAS-BOT-BC330357  Lessingia tenuis Frank W. Peirson 1923-6-10 s.n. Ventura Seymour Cr., Mt. Pinos Comment
  CAS-BOT-BC344246  Madia elegans Frank W. Peirson 1922-7-31 4240 Ventura Seymour Creek, Mt. Pinos Region 1828 Comment
  CAS-BOT-BC92802  Clematis ligusticifolia Frank W. Peirson 1922-7-30 643 Ventura Seymour Creek. Mount Pinos. 1828 Comment
  JEPS59744  Chenopodium fremontii F. W. Peirson 1922-7-30 3238 Ventura Mt. Pinos 2438 Comment
  RSA383854  Ephedra viridis F. W. Peirson 1923-6-10 3570 Ventura Seymour Cr. Mt Pinos. 1829 Comment
  RSA65212  Eriogonum heermannii F. W. Peirson 1922-7-31 3244 Ventura Seymour Creek. 1677 Comment
  RSA83382  Monardella linoides subsp. oblonga F. W. Peirson 1922-7-29 3215 Ventura Seymour Creek, Mt. Pinos 1829 Comment
  RSA85618  Potentilla biennis F. W. Peirson 1922-7-29 3236 Ventura North Fork of Seymour Creek, Mt Pinos 1905 Comment
  RSA86739  Elymus X gouldii F. W. Peirson 1922-7-29 3220 Ventura Seymour Creek, Mt. Pinos 1799 Comment
  RSA87327  Muhlenbergia asperifolia F. W. Peirson 1922-7-29 3221 Ventura Seymour Creek, Mt Pinos 1829 Comment
  UC501592  Fritillaria pinetorum Frank W. Peirson 1923-6-11 3593 Ventura Mount Pinos 2286 Comment
  CAS-BOT-BC69161  Antennaria dimorpha F. W. Peirson 1923-6-11 3562 Ventura Mt. Pinos, near summit 2682 Comment
  JEPS36643  Malacothrix clevelandii Frank W. Peirson 1925-4-19 5772 Ventura Hueneme Comment
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Jan 23 2007
  JEPS51272  Polygonum polygaloides subsp. kelloggii F. W. Peirson 3222 Ventura Cienega Mt. Pinos 2560 Comment
  JEPS56692  Eriogonum molestum Frank W. Peirson 1923-6-11 3572 Ventura near South Fork; Mt. Pinos<?>, Seymour Creek 1905 Comment
  POM354311  Phoradendron densum F. W. Peirson 1922-7-2 3251 Ventura Saymouer Cr.-Mt. Pinos 1829 Comment
  POM77241  Eriodictyon crassifolium F. W. Peirson 1925-4-18 5754 Ventura Sespe Creek. 305 Comment
  RSA64705  Eriogonum spergulinum var. reddingianum F. W. Peirson 1923-6-11 5346 Ventura Mt. Pinos. 2439 Comment
  RSA65537  Carpobrotus chilensis F. W. Peirson 1920-7-28 2243 Ventura About 3 miles W of Ventura Comment
  RSA65868  Polygonum sawatchense subsp. sawatchense F. W. Peirson 1922-7-30 3223 Ventura Mt. Pinos. 2561 Comment
  RSA66317  Eriogonum cithariforme F. W. Peirson 1923-6-11 3572 Ventura Seymour Creek. 1905 Comment
  RSA70445  Allium campanulatum F. W. Peirson 1922-7-30 3254 Ventura Mt. Pinos. 2652 Comment
  RSA72004  Phlox diffusa subsp. subcarinata F. W. Peirson 1923-7-11 3563 Ventura Mt. Pinos. 2652 Comment
  RSA72158  Gayophytum racemosum F. W. Peirson 1922-7-30 3240 Ventura Mt. Pinos. 2561 Comment
  RSA77735  Viola pinetorum subsp. pinetorum F. W. Peirson 1922-7-30 3239 Ventura Mt. Pinos. 2652 Comment
  RSA86741  Leymus condensatus F. W. Peirson 1918-5-5 1565 Ventura Roadside W of Simi Comment
  RSA86866  Prunus ilicifolia F. W. Peirson 1925-4-18 5766 Ventura Sespe Creek. 305 Comment
  RSA91173  Lessingia tenuis F. W. Peirson 1922-7-31 3242 Ventura Seymour Creek. 1829 Comment
  RSA93207  Baccharis salicifolia F. W. Peirson 1925-4-18 5765 Ventura Sespe Creek 305 Comment
  RSA93907  Iva axillaris F. W. Peirson 1922-7-29 4235 Ventura Seymour Creek, Mt. Pinos 1799 Comment
  RSA94901  Cirsium occidentale var. venustum F. W. Peirson 1922-7-31 3261 Ventura Seymour Creek. 1829 Comment
  RSA95345  Ceanothus oliganthus F. W. Peirson 1925-4-18 5760 Ventura Sespe Creek. 305 Comment
  RSA97258  Sphenosciadium capitellatum F. W. Peirson 1922-7-30 3246 Ventura Mt. Pinos. 2561 Comment
  RSA97427  Arceuthobium divaricatum F. W. Peirson 1922-7-29 3251 Ventura Seymour Creek, Mt. Pinos. 1829 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



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