Search Results — 2000 specimen records retrieved (1075 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA65612  Stellaria media F. W. Peirson 1925-9-20 6432 Alameda Hills back of Oakland. Comment
  RSA69046  Dodecatheon hendersonii subsp. cruciatum F. W. Peirson 1926-3-13 6526 Alameda Strawberry Canyon, Berkeley Comment
  RSA85255  Physocarpus capitatus F. W. Peirson 1923-7-4 3751 Alameda Strawberry Creek, Berkeley. Comment
  RSA0070586  Cirsium brevistylum F. W. Peirson 1923-7-4 3930 Alameda Strawberry Creek, Berkeley. Comment
  RSA65967  Eriogonum caninum F. W. Peirson 1925-9-20 6434 Alameda Near old home of Joaquin Miller, hills back of Oakland Comment
  RSA72647  Wyethia angustifolia F. W. Peirson, Mabel Peirson 1926-4-4 6624 Alameda Berkeley Hills, Crgmont Region Comment
  RSA74518  Phacelia nemoralis subsp. nemoralis F. W. Peirson 1923-7-4 3817 Alameda Strawberry Creek, Berkeley. Comment
  RSA86709  Lolium perenne subsp. multiflorum F. W. Peirson 1925-12-6 6475 Alameda Berkeley Hills, Cragmont Avenue Comment
  SD87862  Epilobium densiflorum Frank W. Peirson 1925-9-20 6437 Alameda Hills back of Oakland, Moraga Road, Comment
  CAS-BOT-BC223129  Galium hypotrichium subsp. ebbettsense Frank W. Peirson 1935-7-27 11605 Alpine Summit region south of Ebbets Pass 2804 Comment
  CAS-BOT-BC314956  Hemizonella minima F. W. Peirson 1935-7-24 11564 Alpine Lake Alpine 2255 Comment
  JEPS5605  Ranunculus eschscholtzii var. oxynotus Frank W. Peirson 1935-7-30 11638 Alpine Roundtop Woods Lake Region (n slope) 2865 Comment
  POM212505  Cerastium beeringianum F. W. Peirson 1935-7-30 11831 Alpine Woods Lake Region; at the north base of Roundtop. 2866 Comment
  POM231943  Primula suffrutescens F. W. Peirson 1937-7-23 12109 Alpine Along western edge of plateau southwest of Woods Lake 2805 Comment
  POM254415  Mimulus nanus var. mephiticus F. W. Peirson 1939-8-12 12840 Alpine Woods Lake Region. Frog Lake below high water mark. 2713 Comment
  POM254660  Elymus sierrae F. W. Peirson 1939-8-11 12827 Alpine Woods Lake Region. North slope of Round Top. 2957 Comment
  RSA26684  Elymus glaucus F. W. Peirson 1935-7-24 11561 Alpine open woods near Lake Alpine, Sierra Nevada 2226 Comment
  RSA66216  Arabis lyallii F. W. Peirson 1939-8-11 12825 Alpine Near Round Top Lake, Woods Lake Region 2896 Comment
  RSA87333  Melica bulbosa F. W. Peirson 1937-7-24 12218 Alpine Shores of Winnemucca Lake, Woods Lake Region, Sierra Nevada. 2744 Comment
  RSA88714  Carex helleri F. W. Peirson 1939-8-11 12826 Alpine North slope of Round Top, Woods Lake Region. 2957 Comment
  RSA88809  Carex davyi F. W. Peirson 1935-7-26 11714 Alpine South of Makelumne River, (Hermit Valley) 2439 Comment
  SD87623  Astragalus whitneyi Frank W. Peirson 1935-7-27 11603 Alpine Summit region south of Ebbets Pass 2804 Comment
  SEINET180139 Image available Bromus carinatus var. marginatus Frank W. Peirson 1935-7-28 Alpine Red Lake, Alpine co. California Comment
  UC570553  Draba densifolia Frank W. Peirson 1935-7-26 11597 Alpine at summit of a divide s Mokelumne River (Hermit Valley); , divide s of Mokelumne River 2590 Comment
  UC570574  Collinsia torreyi var. torreyi Frank W. Peirson 1935-7-24 11570 Alpine Lake Alpine Region n of Lake Alpine; Lake Alpine Region 2286 Comment
  UC570586  Potentilla flabellifolia Frank W. Peirson 1935-7-27 11609 Alpine region s Ebbets Pass; region s of Ebbets Pass 2743 Comment
  UC640211  Lupinus lepidus var. lobbii Frank W. Peirson 1939-8-9 12789 Alpine in meadow land n Woods Lake; n of Woods Lake 2545 Comment
  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
  UCR208882  Cassiope mertensiana F. W. Peirson 1935-7-30 11640 Alpine Sierra Nevada Mtns., Woods Lake region, on low hillocks north or northwest of Round Top 2835 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-BC310512  Eurybia integrifolia Frank W. Peirson 1939-8-10 12796 Alpine Woods Lake Region 2773 Comment
  CAS-BOT-BC31567  Carex luzulifolia Frank W. Peirson 1937-7-25 13564 Alpine Trail to Winnemucca, Woods Lake. 2682 Comment
  CAS-BOT-BC532308  Horkelia fusca var. parviflora Frank W. Peirson 1939-8-13 12853 Alpine Woods Lake Region; below Frog Lake. 2682 Comment
  RSA0010735  Senecio scorzonella F. W. Peirson 1939-8-9 12792 Alpine in Woods Lake Region, Sierra Nevada Comment
  RSA68644  Calochortus leichtlinii Frank W. Peirson 1935-7-25 11588 Alpine Open summit of ridge ca. 2 miles N of Lake Alpine 2561 Comment
  RSA69407  Delphinium nuttallianum F. W. Peirson 1937-7-26 12126 Alpine Creek E of Woods Lake. 2622 Comment
  RSA72637  Wyethia mollis F. W. Peirson 1935-7-24 11565 Alpine Lake Alpine. 2287 Comment
  RSA72640  Wyethia mollis F. W. Peirson 1939-8-10 12793 Alpine Above Winnemucca Lake, Woods Lake Region, Sierra Nevada 2744 Comment
  RSA74482  Phacelia humilis var. humilis F. W. Peirson 1935-7-28 11614 Alpine Along margin of Red Lake. 2409 Comment
  RSA77055  Hydrophyllum occidentale F. W. Peirson 1935-7-24 11572 Alpine North of Lake Alpine, Sierra Nevada. 2287 Comment
  RSA77493  Angelica breweri F. W. Peirson 1939-8-11 12832 Alpine Woods Lake Region 2546 Comment
  RSA78514  Carex luzulifolia F. W. Peirson 1937-7-25 13564 Alpine Short distance east of Fourth of July Lake, Woods Lake Region, Sierra Nevada 2896 Comment
  RSA79463  Collinsia torreyi var. torreyi F. W. Peirson 1935-7-24 11570 Alpine North of Lake Alpine, Sierra Nevada. 2287 Comment
  RSA80461  Mimulus moschatus var. longiflorus F. W. Peirson 1939-8-14 12864 Alpine Along East Fork, Woods Lake Region. 2622 Comment
  RSA80853  Orthocarpus cuspidatus subsp. copelandii F. W. Peirson 1935-7-25 11574 Alpine North of Lake Alpine, Sierra Nevada. 2439 Comment
  RSA80855  Orthocarpus cuspidatus subsp. copelandii F. W. Peirson 1939-8-12 12836 Alpine About Frog Lake, Woods Lake Region, Sierra Nevada 2713 Comment
  RSA80858  Orthocarpus cuspidatus subsp. copelandii F. W. Peirson 1935-7-27 11601 Alpine Summit region S of Ebbet's Pass. Sierra Nevada. 2805 Comment
  RSA84274  Ranunculus alismifolius var. hartwegii F. W. Peirson 1935-7-29 11623 Alpine Along trail SW from Woods Lake, Sierra Nevada. 2744 Comment
  RSA85749  Potentilla flabellifolia F. W. Peirson 1935-7-27 11609 Alpine Along small streamlet on west slope of Ebbetts Pass. 2744 Comment
  RSA87402  Lupinus lyallii var. lyallii F. W. Peirson 1939-8-9 12789 Alpine Roundtop, Woods Lake Regions. 2546 Comment
  RSA88761  Carex douglasii F. W. Peirson 1935-7-28 11719 Alpine Foot of Red Lake. 2409 Comment
  RSA90755  Astragalus purshii var. lectulus F. W. Peirson 1937-7-23 12107 Alpine Southwest of Woods Lake. 2744 Comment
  RSA91628  Carex vesicaria F. W. Peirson 1935-7-28 11718 Alpine At foot of Red Lake. 2409 Comment
  RSA92119  Carex nebrascensis F. W. Peirson 1935-7-28 11717 Alpine Lake margin at embankment at foot of Red Lake. 2409 Comment
  RSA93314  Aster breweri F. W. Peirson 1939-8-9 12786 Alpine Near Woods Lake, Sierra Nevada 2546 Comment
  RSA93671  Antennaria media F. W. Peirson 1939-8-11 s.n. Alpine Near Round Top Lake, Woods Lake Region 2896 Comment
  RSA94529  Raillardella argentea F. W. Peirson 1935-7-30 11632 Alpine Northwest of Roundtop, Woods Lake region. 2805 Comment
  RSA95144  Crepis occidentalis subsp. conjuncta F. W. Peirson 1935-7-25 11585 Alpine About 2 miles north of Lake Alpine, Sierra Nevada 2530 Comment
  RSA97370  Sanicula tuberosa F. W. Peirson 1935-7-24 11563 Alpine North of lake Alpine, Sierra Nevada 2256 Comment
  SEINET7579980 Image available Carex vesicaria F. W. Peirson 1935-7-24 11708 Alpine Lake Alpine. 2225 Comment
  UC640244  Sparganium emersum var. emersum Frank W. Peirson 1939-8-10 12813 Alpine margin of Woods Lake 2560 Comment
  RSA79777  Penstemon rydbergii var. oreocharis F. W. Peirson 1926-6-21 6772 Butte Butte Meadow, Humboldt Road. Comment
  RSA69294  Camassia leichtlinii subsp. suksdorfii Frank W. Peirson 1926-6-21 6768 Butte Butte Meadow, Humboldt Road. Comment
  RSA70165  Brodiaea purdyi F. W. Peirson 1926-6-21 6767 Butte Butte Meadow, Humboldt Road. Comment
  RSA80351  Conium maculatum F. W. Peirson 1926-6-20 6761 Butte 5 miles west of Chico Comment
  RSA91387  Hesperolinon micranthum F. W. Peirson 1926-6-21 6779 Butte Butte Meadow, Humboldt Road. Comment
  UC570536  Navarretia divaricata Frank W. Peirson 1935-7-23 11541 Calaveras Big Meadow North Fork Stanislaus River Region 1981 Comment
  UC570541  Sidalcea glaucescens Frank W. Peirson 1935-7-23 Calaveras Big Meadow , Big Meadow (N Fork Stanislaus River Region) 1981 Comment
  UCR80258  Horkelia tridentata F. W. Peirson 1935-7-23 11551 Calaveras Sierra Nevada Mtns., Big Meadow, North Fork Stanislaus River Region 1982 Comment
  RSA80117  Mimulus breweri F. W. Peirson 1935-7-23 11542 Calaveras North Fork of Stanislaus River Comment
  RSA90945  Trifolium fucatum var. fucatum F. W. Peirson, Mabel B. Peirson 1926-4-10 6638 Contra Costa Between Walnut Creek and Martinez. Comment
  RSA93033  Grindelia camporum F. W. Peirson 1923-7-1 3886 Contra Costa Mt. Diablo Comment
  RSA0087573  Linnaea borealis subsp. longiflora Frank W. Peirson 1923-7-13 3865 Del Norte About 2 miles south of Oregon line on road between Grants Pass and Gasquet. Comment
  RSA69247  Hastingsia serpentinicola Frank W. Peirson 1941-7-28 13103 Del Norte 10 miles below Patricks Creek Camp. Comment
  RSA69282  Tofieldia glutinosa subsp. occidentalis F. W. Peirson 1923-7-13 3686 Del Norte 10 miles northeast of Gasquet Comment
  RSA72660  Balsamorhiza hookeri F. W. Peirson 1925-7-1 6188 Del Norte El dorado County. open woods, state line, Lake Tahoe 1951 Comment
  RSA92673  Eriophyllum lanatum var. achilleoides F. W. Peirson 1923-7-13 3913 Del Norte 7 miles N of Gasquet. Comment
  RSA94422  Chrysanthemum leucanthemum F. W. Peirson 1928-7-5 7960 Del Norte Open field 15-20 miles north of Crescent City Comment
  RSA95303  Rhamnus californica subsp. occidentalis F. W. Peirson 1923-7-13 3764 Del Norte 4 miles north of Gasquet. Comment
  RSA97135  Lomatium howellii F. W. Peirson 1923-7-13 3948 Del Norte 4 miles northeast of Gasquet Comment
  CAS-BOT-BC208853  Lupinus argenteus var. meionanthus Frank W. Peirson 1925-7-1 6180 El Dorado State Line, Lake Tahoe 1905 Comment
  CAS-BOT-BC230637  Plagiobothrys torreyi var. diffusus Frank W. Peirson 1925-7-1 6179 El Dorado State Line, Lake Tahoe 1920 Comment
  LA38993  Mimulus nanus var. mephiticus Frank W. Peirson; 1925-7-1 6174 El Dorado State Line, Lake Tahoe 1920 Comment
  RSA65552  Arenaria aculeata F. W. Peirson 1925-7-7 6308 El Dorado Trail by upper Echo Lake, Sierra Nevada. 2287 Comment
  RSA74829  Phacelia hydrophylloides F. W. Peirson 1925-7-3 6232 El Dorado Glen Alpine Creek Basin, Sierra Nevada. 2287 Comment
  RSA83953  Saxifraga oregana F. W. Peirson 1925-7-1 6168 El Dorado State Line, Lake Tahoe. 1951 Comment
  RSA85773  Potentilla breweri var. breweri F. W. Peirson 1925-7-5 6282 El Dorado North road to Mt. Tallac shortly before the ridge, Sierra Nevada. Comment
  RSA86951  Chrysolepis sempervirens F. W. Peirson 1925-7-4 6264 El Dorado Road on east shore of Fallen Leaf Lake, Sierra Nevada. 1951 Comment
  SD87584  Polygonum polygaloides subsp. kelloggii Frank W. Peirson 1925-7-1 6176 El Dorado State Line, Lake Tahoe 1905 Comment
  UC511784  Phacelia racemosa Frank W. Peirson 1925-7-6 6294 El Dorado 1/4 mi above Fallen Leaf Camp 1981 Comment
  UC555562  Horkelia fusca subsp. parviflora Frank W. Peirson 1925-7-1 6184 El Dorado State Line Lake Tahoe 1905 Comment
  CAS-BOT-BC127793  Brickellia grandiflora Mabel B. Peirson 1931-8-5 s.n. El Dorado Echo Lake Region. Slopes above Tamarac Lake 2438 Comment
  CAS-BOT-BC420140  Polygonum ramosissimum subsp. prolificum F. W. Peirson 1925-6-2 6204 El Dorado South side of Lake Tahoe Comment
  CAS-BOT-BC82387  Arnica discoidea Frank W. Peirson 1931-8-6 s.n. El Dorado Trail from Angora Lakes to Fallen-Leaf Lake 1981 Comment
  LA38959  Mimulus guttatus Frank W. Peirson; 1925-7-7 6303 El Dorado Trail along Echo Lake 2285 Comment
  PASA1241  Zigadenus venenosus Frank W. Peirson 1925-7-6 El Dorado near Fallen Leaf Lake 1981 Comment
  RSA65643  Montia linearis F. W. Peirson 1925-7-1 6189 El Dorado State Line, Lake Tahoe 1905 Comment
  RSA66690  Dicentra uniflora F. W. Peirson 1925-7-5 6274 El Dorado Near summit of Mt. Tallac, Sierra Nevada 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
  RSA70145  Triteleia ixioides subsp. anilina F. W. Peirson 1925-7-4 6260 El Dorado Road, east side of Fallen Leaf Lake, Sierra Nevada Comment
  RSA70232  Allium validum F. W. Peirson 1925-7-6 6297 El Dorado Lake of the Woods Trail from Fallen Leaf Lake. Sierra Nevada. Comment
  RSA70365  Calochortus minimus Frank W. Peirson 1925-7-3 6247 El Dorado Glen Alpine Creek Basin, Sierra Nevada. 2287 Comment
  RSA72036  Polemonium pulcherrimum F. W. Peirson 1925-7-5 6275 El Dorado Mt. Tallac, from near summit to Plateau, Sierra Nevada. 2591 Comment
  RSA72086  Microsteris gracilis subsp. humilis F. W. Peirson 1925-7-1 6178 El Dorado Lake Tahoe, State Line between California and Nevada. 1921 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
  RSA73063  Leptosiphon ciliatus F. W. Peirson 1925-7-7 6312 El Dorado meadow on trail by Upper Echo Lake, Sierra Nevada 2287 Comment
  RSA79423  Collinsia torreyi var. wrightii F. W. Peirson 1925-7-7 6315 El Dorado Echo Lakes Divide. 2530 Comment
  RSA79751  Penstemon deustus subsp. deustus F. W. Peirson 1925-7-2 6219 El Dorado Glen Alpine Ranch, 0.25 miles above Fallen Leaf Lake, Sierra Nevada. 1982 Comment
  RSA80846  Pedicularis attollens F. W. Peirson 1925-7-1 6195 El Dorado State Line, Lake Tahoe. Sierra Nevada. 1905 Comment
  RSA82112  Utricularia vulgaris subsp. macrorhiza F. W. Peirson 1925-7-2 6212 El Dorado South side of Lake Tahoe. 1898 Comment
  RSA84376  Lithophragma glabrum F. W. Peirson 1925-7-5 6271 El Dorado Just below summit of ridge of middle trail to Mt. Tallac. Sierra Nevada. 2591 Comment
  RSA84399  Mitella breweri F. W. Peirson 1925-7-3 6244 El Dorado Glen Alpine Creek Basin. Sierra Nevada. 2134 Comment
  RSA85540  Cheilanthes gracillima F. W. Peirson 1931-8-7 9524 El Dorado Near Grass Lake, Glen Alpine Creek Basin. 2226 Comment
  RSA85916  Polygonum aviculare F. W. Peirson 1925-7-2 6204 El Dorado South side of Lake Tahoe. 1905 Comment
  RSA86821  Amelanchier pallida F. W. Peirson 1925-7-4 6261 El Dorado Road on E side of Fallen Leaf Lake. 1951 Comment
  RSA90881  Carex spectabilis F. W. Peirson 1931-8-8 9535 El Dorado Lake of the Woods trail, Glen Alpine Creek Basin. 2256 Comment
  RSA90919  Erigeron compositus F. W. Peirson 1925-7-5 6280 El Dorado Near summit of Mt. Tallac, Sierra Nevada Comment
  RSA92325  Poa secunda F. W. Peirson 1924-7-3 6255 El Dorado Glen Alpine Creek Basin 2378 Comment
  RSA93271  Ericameria discoidea F. W. Peirson 1931-8-9 9543 El Dorado In summit region, Mt Tallac. 2957 Comment
  RSA93386  Symphoricarpos acutus F. W. Peirson 1925-7-6 6287 El Dorado 1/4 mile above Fallen Leaf Camp, Sierra Nevada. 1982 Comment
  RSA95080  Microseris nutans F. W. Peirson 1925-7-4 6257 El Dorado Road, east side of Fallen Leaf Lake, Sierra Nevada Comment
  SEINET10460837  Porterella carnosula Frank W. Peirson 1925-7-1 Peirson 6191 El Dorado 1905 Comment
  CAS-BOT-BC306582  Helenium bigelovii Frank W. Peirson 1939-8-21 12875 Fresno South Fork San Joaquin River. Between Florence Lake and Blaney Meadows 2286 Comment
  CAS-BOT-BC428634  Micranthes bryophora F. W. Peirson 1921-8-15 2626 Fresno Cartridge Creek, Middle Fork of Kings River, Sierra Nevada 3352 Comment
  CAS-BOT-BC89953  Arnica mollis Frank W. Peirson 1921-8-15 2573 Fresno Cartridge Creek, tributary Middle Fork Kings River 3200 Comment
  JEPS54659  Astragalus gambelianus Frank W. Peirson 1925-3-23 5640 Fresno slope above Fresno County Auto Camp (Coalinga to Parkfield, Inner Coast Ranges); Inner Coast Ranges, Coalinga to Parkfield 944 Comment
  JEPS5535  Asclepias fascicularis Frank W. Peirson 1911-8-3 885 Fresno near s end Rae Lake 3230 Comment
  PASA2603  Drosera rotundifolia Frank W. Peirson 1917-8-12 1936 Fresno Grouse Meadows, Middle Fork of Kings River 2514 Comment
  RSA65679  Lewisia nevadensis F. W. Peirson 1911-8-3 607 Fresno Rae Lake region, Sierra Nevada. 3232 Comment
  RSA69774  Gentiana newberryi F. W. Peirson 1939-8-22 12880 Fresno Jackass Meadow 2180 Comment
  RSA70495  Erodium macrophyllum F. W. Peirson 1925-3-23 5635 Fresno Between Coalinga and Parkfield. 945 Comment
  RSA70566  Vaccinium uliginosum subsp. occidentale F. W. Peirson 1917-08 837 Fresno Grouse Meadows, Sierra Nevada. 2515 Comment
  RSA73297  Linanthus pungens subsp. pulchriflorus F. W. Peirson 1917-8-13 932 Fresno Grouse Meadows, Middle Fork of Kings River, Sierra Nevada 2515 Comment
  RSA74164  Phacelia ciliata F. W. Peirson 1925-3-24 5648 Fresno Between Coalinga and Parkfield, inner coast ranges. 991 Comment
  RSA76996  Acer glabrum var. torreyi F. W. Peirson 1921-8-14 2638 Fresno Le Conte Canyon, Middle Fork of Kings River 2439 Comment
  RSA79941  Cryptantha nubigena F. W. Peirson 1919-8-24 1031 Fresno Rae Lake 3232 Comment
Read comments
Dec 23 2018
  RSA83966  Saxifraga bryophora F. W. Peirson 1921-8-15 2626 Fresno Cartridge Creek. Middle Fork of Kings River. Sierra Nevada. 3354 Comment
  RSA84316  Isoetes bolanderi F. W. Peirson 1921-8-15 2544 Fresno Cartridge Creek, Sierra Nevada 3201 Comment
  RSA85769  Potentilla breweri var. breweri F. W. Peirson 1914-8-7 1968 Fresno Piute Creek, Sierra Nevada Comment
  RSA86935  Betula occidentalis F. W. Peirson 1911-8-1 1705 Fresno Woods Creek Meadow, Sierra Nevada. 2500 Comment
  RSA88673  Carex lenticularis var. lipocarpa F. W. Peirson 1921-8-16 2566 Fresno Cardinal Lake, Sierra Nevada 3537 Comment
  UC501632  Lessingia leptoclada Frank W. Peirson 1919-8-19 1257 Fresno near Kanawyers (canyon floor); South Fork Kings River 1447 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
  POM87050  Grindelia camporum F. W. Peirson 1925-10-22 6467 Fresno San Joaquin River at Valley Boulevard. Comment
  RSA0012635  Senecio scorzonella F. W. Peirson 1921-8-11 2559 Fresno Evolution Lake region, Sierra Nevada. 3537 Comment
  RSA0023170  Ribes quercetorum F. W. Peirson 1925-3-23 5633 Fresno Between Coalinga and Parksfield, at County Public Camp. 1174 Comment
  RSA65750  Stellaria longipes F. W. Peirson 1919-8-18 617 Fresno Summit Meadow. Kings River Region. Sierra Nevada. 2439 Comment
  RSA69642  Listera convallarioides Frank W. Peirson 1911-8-1 1699 Fresno Woods Creek at meadow, Sierra Nevada 2500 Comment
  RSA71799  Gilia achilleifolia F. W. Peirson 1925-3-23 5638 Fresno Slope slightly above County Auto Camp, Inner Coast Ranges, road between Coalinga and Parksfield 915 Comment
  RSA77802  Hackelia mundula F. W. Peirson 1914-8-13 1007 Fresno Fish Creek, San Joaquin Tributary, Sierra Nevada Comment
  RSA79879  Solanum umbelliferum F. W. Peirson 1925-3-23 5634 Fresno Slope above County Public Camp, between Coalinga and Parkfield. 945 Comment
  RSA80280  Orthocarpus lacerus F. W. Peirson 1914-8-10 1167 Fresno Warm Creek, Sierra Nevada Comment
  RSA82066  Cordylanthus tenuis subsp. tenuis F. W. Peirson 1914-08 1161 Fresno South Fork of San Joaquin River, Sierra Nevada. Comment
  RSA85873  Fragaria virginiana subsp. platypetala F. W. Peirson 1919-8-18 1959 Fresno Summit Meadow, Sierra Nevada. 2439 Comment
  RSA87222  Lupinus pratensis F. W. Peirson 1921-8-10 2554 Fresno Evolution Creek, Sierra Nevada 2957 Comment
  RSA88702  Carex hoodii F. W. Peirson 1939-8-21 12885 Fresno Among rocks above the South Fork of the San Joaquin River 2317 Comment
  RSA90402  Lotus unifoliolatus F. W. Peirson 1925-10-22 6468 Fresno San Joaquin River at Boulevard. [Valley Blvd?] Comment
  RSA90923  Erigeron compositus F. W. Peirson 1911-8-3 1281 Fresno Rae Lake, Sierra Nevada 3232 Comment
  RSA91349  Lupinus covillei F. W. Peirson 1917-8-15 538 Fresno Middle Fork of Kings River, above Dusey. Comment
  RSA93336  Kelloggia galioides F. W. Peirson 1919-8-18 1190 Fresno Near Summit Meadow. Sierra Nevada. 2439 Comment
  RSA94480  Arnica chamissonis subsp. foliosa F. W. Peirson 1939-8-22 12879 Fresno Wet location along stream in Jackass Meadow. Florence Lake region. 2180 Comment
  RSA94522  Raillardella argentea F. W. Peirson 1921-8-18 2632 Fresno West side of Taboose Pass near the summit. 3506 Comment
  RSA94549  Raillardella scaposa F. W. Peirson 1921-8-17 2533 Fresno South Fork of Kings River, Sierra Nevada. 3049 Comment
  RSA94732  Senecio werneriifolius F. W. Peirson 1921-8-11 2561 Fresno Southwest slope of Mount Darwin, Evolution Lake region, Sierra Nevada. 3537 Comment
  RSA94889  Arnica amplexicaulis F. W. Peirson 1917-8-12 1425 Fresno Grouse Meadows, Middle Fork Kings River, Sierra Nevada 2515 Comment
  RSA94911  Cirsium scariosum F. W. Peirson 1917-8-6 1458 Fresno Bubbs Creek, tributary to South Fork of Kings River (at East Creek) Comment
  RSA95103  Crepis acuminata F. W. Peirson 1911-8-1 1497 Fresno Woods Creek, Sierra Nevada 2470 Comment
  RSA98328  Lomatium torreyi F. W. Peirson 1914-8-7 811 Fresno Piute Creek, Sierra Nevada Comment
  CAS-BOT-BC193138  Astragalus rattanii var. rattanii Frank W. Peirson 1926-7-15 7058 Humboldt Mad River, vicinity of Blue Lake Comment
  CAS-BOT-BC28504  Carex lenticularis var. limnophila Frank W. Peirson 1926-7-13 7046 Humboldt Along shore of first lagoon south of Orick Comment
  POM205521  Iliamna latibracteata F. W. Peirson 1923-7-11 s.n. Humboldt Between Eureka and Crescent City Comment
  RSA33737  Aster chilensis F. W. Peirson 1923-7-11 3882 Humboldt 7 miles north of Arcata. Comment
  RSA85298  Ranunculus orthorhynchus var. platyphyllus F. W. Peirson 1923-7-11 3724 Humboldt 7 miles N of Arcata. Comment
  CAS-BOT-BC311433  Hypochaeris radicata Frank W. Peirson 1923-7-9 3934 Humboldt Auto camp on Eel River, Humboldt County State Park Comment
  JEPS63031  Stachys ajugoides var. rigida Frank W. Peirson 1926-7-12 7034 Humboldt near bridge over Redwood Creek (Orick) Comment
  PASA1934  Cornus sessilis Frank W. Peirson 1932-7-7 Humboldt Wild Creek Comment
  RSA69802  Centaurium muehlenbergii F. W. Peirson 1941-7-29 13110 Humboldt Stephens Grove State Park. Comment
  RSA70055  Epipactis gigantea Frank W. Peirson 1923-7-9 3697 Humboldt State Park on Eel River Comment
  RSA70148  Dichelostemma ida-maia F. W. Peirson 1926-7-12 7030 Humboldt W slope of Coast Range back of Orick. Comment
  RSA71937  Collomia heterophylla F. W. Peirson 1926-7-12 7035 Humboldt Redwood Creek bottom landes below bridge, Orick Comment
  RSA90753  Astragalus rattanii var. rattanii F. W. Peirson 1926-7-13 7058 Humboldt Near Blue Lake, Mad River. Comment
  RSA90948  Trifolium fucatum var. fucatum F. W. Peirson 1926-7-12 7032 Humboldt Orick Comment
  RSA91235  Vicia angustifolia F. W. Peirson 1926-7-13 7059 Humboldt Mad River, near Blue Lake Comment
  RSA92453  Dichanthelium acuminatum var. fasciculatum F. W. Peirson 1923-7-9 3650 Humboldt along Eel River, Humboldt State Park Comment
  RSA93723  Ageratina occidentalis F. W. Peirson 1926-7-13 7052 Humboldt Near Blue Lake, Mad River Comment
  RSA94392  Madia anomala F. W. Peirson 1926-7-14 7067 Humboldt Redwood Camp, Lower Eel River Comment
  RSA95039  Erechtites minimus F. W. Peirson 1923-7-10 3926 Humboldt A few miles from Garberville. Comment
  RSA95266  Sidalcea oregana subsp. spicata F. W. Peirson 1923-7-11 3778 Humboldt Along road 7 miles north of Arcata. Comment
  CAS-BOT-BC177744  Astragalus crotalariae Frank W. Peirson 1927-4-13 s.n. Imperial Imperial Valley Boulevard, opposite Salton Sea Comment
  CAS-BOT-BC178631  Astragalus coccineus Frank W. Peirson 1922-4-13 2877 Imperial Mountain Springs, below store. 792 Comment
  PASA2161  Brickellia atractyloides var. odontolepis Frank W. Peirson 1922-4-13 Imperial Mountain Springs Grade 548 Comment
  RSA65349  Atriplex elegans var. fasciculata F. W. Peirson 1927-4-26 7207 Imperial 2 miles below foot of Mtn Springs Grade Comment
  RSA69458  Mirabilis tenuiloba F. W. Peirson 1941-4-8 13075 Imperial Small, rocky side canyon of Painted Gorge, ca. 10 miles E of Mt. Springs Grade and N of El Centro to San Diego Blvd. Comment
  RSA69555  Mentzelia hirsutissima var. stenophylla F. W. Peirson 1927-4-16 7209 Imperial Foot of Mountain Springs Grade, Western Imperial County Comment
  RSA70348  Funastrum hirtellum F. W. Peirson 1928-4-22 7879 Imperial Foot of rocky walls of the Narrows, San Felipe Creek. [San Diego Co.] Comment
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Aug 22 2014
  RSA70379  Chamaesyce pediculifera F. W. Peirson 1932-3-22 9796 Imperial Midway Well 152 Comment
  RSA72242  Camissonia claviformis subsp. peirsonii F. W. Peirson 1922-4-13 2892 Imperial Mountain Spring Grade. 457 Comment
  RSA74718  Nama hispida var. revoluta F. W. Peirson 1927-4-15 7199 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  RSA77841  Fagonia laevis F. W. Peirson 1932-3-21 9783 Imperial 3 mi. north of Ogilby. 122 Comment
  RSA77886  Tiquilia palmeri F. W. Peirson 1927-4-15 7202 Imperial Low land along Colorado River, near Ft. Yuma. Comment
  RSA79885  Datura discolor F. W. Peirson 1922-4-13 2897 Imperial Foot of Mountain Springs Grade, w. Imperial County. Comment
  RSA80249  Mohavea confertiflora F. W. Peirson 1932-3-22 9804 Imperial Midway Well 152 Comment
  RSA86977  Calliandra eriophylla F. W. Peirson 1932-3-21 9788 Imperial 6 miles north of Ogilby, eastern Imperial Co. 137 Comment
  SD87880  Trichoptilium incisum Frank W. Peirson 1927-4-14 7189 Imperial Canyon near east end of Santa Rosa Mts; 8 miles from Imperial Valley Boulevard; Near Imperial-San Diego Cos. Line Comment
  UC501441  Gilia stellata Frank W. Peirson 1932-3-22 9803 Imperial Midway Well Midway Well (eastern Imperial County) 152 Comment
  UC501509  Ephedra trifurca Frank W. Peirson 1932-3-21 9774 Imperial se Imperial County The Sand Hills Comment
  UCR129684  Camissonia chamaenerioides F. W. Peirson 1922-4-13 2898 Imperial Peninsular Range/Western Colorado Desert, Mountain Springs Grade 457 Comment
  RSA0020069  Lycium brevipes var. hassei F. W. Peirson 1927-4-14 7190 Imperial Canyon near east end of Santa Rosa Mtns., 7.5 mi. from Imperial Valley Blvd. Comment
  RSA91217  Krameria grayi F. W. Peirson 1932-3-21 9785 Imperial 3 mi. north of Ogilby. 122 Comment
  RSA91373  Psorothamnus emoryi F. W. Peirson 1927-4-14 7186 Imperial Canyon near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Boulevard. Comment
  RSA94832  Trixis californica F. W. Peirson 1927-4-16 7212 Imperial Foot of Mountain Springs Grade, Western Imperial County Comment
  RSA95298  Hibiscus denudatus F. W. Peirson 1932-3-21 9789 Imperial 3 mi. north of Ogilby. 122 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-BC118097  Delphinium polycladon Frank W. Peirson 1939-8-6 s.n. Inyo Rock Creek Lake Basin, on the west shore of Ruby Lake 3398 Comment
  CAS-BOT-BC118688  Carex proposita Frank Warrington Peirson 1933-8-15 13586 Inyo Above Ruby Lake, Rock Creek Lake Basin. 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-BC162668  Camissonia kernensis subsp. gilmanii F. W. Peirson 1928-4-2 7799 Inyo About 1 mile east of Bradbury Well, Death Valley Region Comment
  CAS-BOT-BC16318  Boechera howellii Frank W. Peirson 1929-7-22 8538 Inyo Bishop Pass. 3505 Comment
  CAS-BOT-BC230097  Luzula orestera Frank W. Peirson s.n. Inyo Meadows south of Long Lake, Rock Creek Basin 3291 Comment
  CAS-BOT-BC256835  Eriogonum incanum Frank W. Peirson 1931-8-2 s.n. Inyo Rock Creek Lake Basin 3352 Comment
  CAS-BOT-BC300110  Erigeron pumilus var. intermedius F. W. Peirson 1921-8-18 2760 Inyo Taboose Pass 3200 Comment
  CAS-BOT-BC30386  Ageratina occidentalis Frank W. Peirson 1919-8-27 1212 Inyo Saw-Mill Canyon, east slope Sierra Nevada 2956 Comment
  CAS-BOT-BC305829  Heliomeris multiflora var. nevadensis Frank W. Peirson 1932-5-7 9912 Inyo North Fork Hanaupah Canyon, Panamint Mts. 1828 Comment
  CAS-BOT-BC30761  Amphipappus fremontii Frank W. Peirson 1932-5-6 9898 Inyo 8 miles east of Darwin 1219 Comment
  CAS-BOT-BC318398  Packera cana Frank Warrington Peirson 1930-8-3 s.n. Inyo Rock Creek Lake Basin 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-BC349766  Monoptilon bellioides F. W. Peirson 1928-4-2 7780 Inyo About 1 mile east of Bradbury Well, Death Valley region Comment
  CAS-BOT-BC68116  Cheilanthes parryi F. W. Peirson 1928-4-3 7819 Inyo Death Valley region - Emigrant Pass 914 Comment
  CAS-BOT-BC86945  Antennaria pulchella F. W. Peirson 1930-8-7 9120 Inyo Valley southward from Ruby Lake, Rock Creek Lake Basin, northern Inyo County 3444 Comment
  CAS-BOT-BC9405  Carex subnigricans Frank W. Peirson 1933-8-10 10828 Inyo Rock Creek Lake Basin 3352 Comment
  JEPS21060  Viguiera reticulata Frank W. Peirson 1928-4-3 7820 Inyo Emigrant Pass Death Valley Region 914 Comment
  JEPS22396  Arenaria kingii var. glabrescens Frank W. Peirson 1937-8-11 12193 Inyo below East Recess; Rock Creek Lake Basin 3352 Comment
  JEPS27452  Drymocallis pseudorupestris var. crumiana Frank W. Peirson 1937-8-11 12195 Inyo Rock Creek Lake Basin above East Recess; Rock Creek Lake Basin 3474 Comment
  JEPS27454  Luzula cascadensis Frank W. Peirson 1937-8-4 12197 Inyo Rock Creek Lake Basin. Near foot of the Escarpment Heart Lake 3230 Comment
  JEPS27457  Luzula orestera Frank W. Peirson 1937-8-7 Inyo Rock Creek Lake Basin Rock Creek Lake Basin (along stream tributary to Long Lake from the s) 3276 Comment
  JEPS31434  Monoptilon bellioides Frank W. Peirson 1928-4-2 7780 Inyo near Bradbury Well; Death Valley Region Comment
  JEPS36865  Stephanomeria tenuifolia Frank W. Peirson 1931-8-2 9513 Inyo w of Heart Lake; Rock Creek Lake Basin 3413 Comment
  JEPS45577  Cercocarpus ledifolius var. ledifolius Frank W. Peirson 1930-8-11 9175 Inyo above Rock Creek Lake (Rock Creek Lake Basin); Rock Creek Lake Basin 3017 Comment
  JEPS50885  Silene bernardina Frank W. Peirson 1934-7-24 Inyo Heart Lake Rock Creek Lake Basin, Heart Lake 3352 Comment
  JEPS54868  Caesalpinia virgata Frank W. Peirson 1917-1 2 Inyo Independence Comment
  JEPS66685  Vaccinium uliginosum subsp. occidentale Frank W. Peirson 1931-7-30 9480 Inyo Ruby Falls Rock Creek Lake Basin 3322 Comment
  JEPS66958  Juncus drummondii Frank W. Peirson 1934-7-23 11278 Inyo Rock Creek Lake Basin 3291 Comment
  JEPS67181  Luzula orestera Frank W. Peirson 1931-8-1 Inyo s shore Long Lake; Rock Creek Lake Basin, s shore Long Lake 3246 Comment
  JEPS9157  Hecastocleis shockleyi Frank W. Peirson 1936-4-6 11804 Inyo near Nevada state line (summit of ridge where road enters canyon); Titus Canyon 2011 Comment
  POM160271  Draba densifolia F. W. Peirson 1929-7-24 8549 Inyo Inconsolable Range 3659 Comment
  POM203746  Jamesia americana var. rosea F. W. Peirson 1934-7-29 s.n. Inyo Rock Creek Lake Basin, west of Ruby Lake 3628 Comment
  POM254388  Draba sierrae F. W. Peirson 1940-8-5 12949 Inyo Rock Creek Lake Basin: steep east wall of canyon near Transverse Ridge 3415 Comment
  POM256932  X Agrositanion saundersii F. W. Peirson 1934-7-28 s.n. Inyo Rock Creek Lake Basin along the south slope of the Transverse Glacial Ridge. 3293 Comment
  POM360935  Salix arctica F. W. Peirson 1935-7-16 s.n. Inyo Rock Creek Lake Basin, just below Ruby Lake. 3384 Comment
  RSA256927  Poa secunda F. W. Peirson 1940-8-6 s.n. Inyo Near Heart Lake Meadow, Rock Creek Lake Basin. 3232 Comment
  RSA259423  Agrostis variabilis F. W. Peirson 1934-7-23 s.n. Inyo Rock Creek Lake Basin 3293 Comment
  RSA33880  Sphaeromeria cana F. W. Peirson 1930-8-7 9115 Inyo Rock Creek Lake Basin, Sierra Nevada, northern Inyo [Co.] 3354 Comment
  RSA384871  Elymus trachycaulus F. W. Peirson 1933-8-19 s.n. Inyo Rock Creek Lake Basin. 3323 Comment
  RSA611929  Poa secunda F. W. Peirson 1933-8-5 10827 Inyo Drier parts of the Heart Lake Meadow, Rock Creek Lake Basin 3216 Comment
  RSA65052  Silene sargentii F. W. Peirson 1930-8-3 9065 Inyo east of Heart Lake, Rock Creek Lake Basin. 3200 Comment
  RSA65071  Eriogonum incanum F. W. Peirson 1930-8-7 9124 Inyo Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA65092  Eriogonum incanum F. W. Peirson 1929-7-22 8534 Inyo Trail southward from Long Lake, Bishop Creek region east side of Sierra Nevada, 3415 Comment
  RSA65118  Eriogonum incanum F. W. Peirson 1934-7-23 11277 Inyo Rock Creek Lake Basin, east side of canyon 3293 Comment
  RSA65137  Eriogonum latens F. W. Peirson 1913-8-22 1768 Inyo Taboose Pass, Sierra Nevada. Comment
  RSA65375  Atriplex confertifolia F. W. Peirson 1936-4-6 11805 Inyo Divide above Titus Canyon. (near the Nevada state line) Comment
  RSA65457  Rumex paucifolius F. W. Peirson 1940-8-6 12965 Inyo Mountain slope west of Heart Lake, Rock Creek Lake Basin. 3293 Comment
  RSA65576  Minuartia nuttallii subsp. gracilis F. W. Peirson 1911-8-8 624 Inyo Cottonwood Creek, Sierra Nevada. Comment
  RSA66136  Draba albertina F. W. Peirson 1935-7-17 11517 Inyo Meadows along upper end of Chickenfoot Lake, Rock Creek Lake Basin, Sierra Nevada 3293 Comment
  RSA66141  Draba albertina F. W. Peirson 1934-7-29 11291 Inyo Above Ruby Lake, Rock Creek Lake Basin 3506 Comment
  RSA66517  Arabis platysperma var. howellii F. W. Peirson 1921-8-18 2535 Inyo Taboose Pass, Sierra Nevada 3201 Comment
  RSA66796  Boechera stricta F. W. Peirson 1934-7-27 11298 Inyo East Chain Lakes, Rock Creek Lake Basin 3232 Comment
  RSA67131  Galium hypotrichium subsp. hypotrichium F. W. Peirson 1937-8-11 12194 Inyo Slopes above the East Recess, Rock Creek Lake Basin. 3476 Comment
  RSA69260  Kalmia polifolia subsp. microphylla F. W. Peirson 1935-7-17 11522 Inyo Meadows along upper end of Chickenfoot Lake, Rock Creek Lake Basin, Sierra Nevada 3293 Comment
  RSA69396  Thalictrum sparsiflorum F. W. Peirson 1929-7-19 8486 Inyo Bishop Creek at South Lake. 3018 Comment
  RSA69680  Allenrolfea occidentalis F. W. Peirson 1928-4-3 7816 Inyo North of Furnace Creek, Death Valley Comment
  RSA69736  Luzula orestera F. W. Peirson 1929-7-20 8501 Inyo Trail from South Lake to Green Lake, Bishop Creek 3293 Comment
  RSA69766  Luzula spicata F. W. Peirson 1934-7-25 11283 Inyo North of Chickenfoot Lake, Rock Creek Lake Basin. 3277 Comment
  RSA69853  Juncus drummondii F. W. Peirson 1931-7-22 9420 Inyo Lake in Upper Ruby stream, Rock Creek Lake Basin. 3537 Comment
  RSA69933  Apocynum androsaemifolium subsp. pumilum F. W. Peirson 1930-8-6 9111 Inyo Above Rock Creek Lake, Rock Creek Lake Basin. 3018 Comment
  RSA70093  Juncus parryi F. W. Peirson 1930-8-4 9081 Inyo Upper Rock Creek Lake Basin. 3293 Comment
  RSA72133  Epilobium angustifolium var. macrophyllum F. W. Peirson 1931-7-25 9467 Inyo Rock Creek Lake Basin. near Heart lake. 3201 Comment
  RSA73072  Linanthus demissus F. W. Peirson 1928-4-2 7783 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA74801  Phacelia perityloides F. W. Peirson 1936-4-6 11807 Inyo Broad open section of Titus canyon (on rock walls of Ordovician Dolomites) near Death Valley. 915 Comment
  RSA75990  Eucrypta chrysanthemifolia var. bipinnatifida F. W. Peirson 1928-4-2 7786 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA77495  Angelica lineariloba F. W. Peirson 1913-8-22 2310 Inyo Taboose Pass, Sierra Nevada. Comment
  RSA78486  Salix planifolia F. W. Peirson 1937-8-8 13529 Inyo North base of Tranverse Ridge, Rock Creek Lake Basin. Comment
  RSA78495  Comandra umbellata subsp. californica F. W. Peirson 1946-4-19 13537 Inyo Titus Canyon, Death Valley. Comment
  RSA78502  Carex utriculata F. W. Peirson 1940-8-18 13568 Inyo West of Long Lake, Rock Creek Lake Basin. Comment
  RSA78509  Carex scopulorum var. bracteosa F. W. Peirson 1940-8-17 13559 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3201 Comment
  RSA79770  Cryptantha confertiflora F. W. Peirson 1914-8-3 996 Inyo Big Pine Creek, Owens Valley. 2668 Comment
  RSA83958  Saxifraga hyperborea F. W. Peirson 1933-8-10 10765 Inyo Above Ruby Lake, Rock Creek Lake Basin. 3506 Comment
  RSA84209  Rhodiola integrifolia subsp. integrifolia F. W. Peirson 1931-7-19 9460 Inyo Upper Basin; Rock Creek Lake Basin, Sierra Nevada, northern Inyo Co. 3293 Comment
  RSA84429  Aquilegia pubescens F. W. Peirson 1929-7-19 8490 Inyo Bishop Creek at South Lake. 3018 Comment
  RSA84964  Ribes inerme F. W. Peirson 1930-8-8 9136 Inyo West of Heart Lake, Rock Creek Lake Basin 3232 Comment
  RSA85246  Spiraea densiflora var. splendens F. W. Peirson 1921-8-8 1954 Inyo East slope of Piute Pass. 3354 Comment
  RSA85636  Potentilla pensylvanica var. strigosa F. W. Peirson 1931-7-21 9474 Inyo Near Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA85713  Potentilla diversifolia F. W. Peirson 1929-7-19 8488 Inyo South Lake, Bishop Creek 3018 Comment
  RSA85737  Potentilla jepsonii F. W. Peirson 1933-8-20 10807 Inyo Heart Meadow, Rock Creek Lake Basin. 3201 Comment
  RSA86328  Ivesia lycopodioides subsp. megalopetala F. W. Peirson 1940-8-10 12961 Inyo Delta at inlet of Ruby Lake, Rock Creek Lake Basin, northern Inyo County 3399 Comment
  RSA86345  Juniperus occidentalis var. australis F. W. Peirson 1931-7-30 9395 Inyo Along Ruby Stream. Rock Creek Lake Basin, at 10,800 ft. 3293 Comment
  RSA86526  Pinus albicaulis F. W. Peirson 1932-7-29 11327 Inyo Heart Lake Region, Rock Creek Lake Basin. Comment
  RSA86687  Leymus triticoides F. W. Peirson 1938-7-8 12415 Inyo Near bank of Lone Pine Creek, west of Alabama Hills. Comment
  RSA87138  Lupinus pusillus var. intermontanus F. W. Peirson 1932-5-8 9939 Inyo Panamint Mountains: Wild Rose Canyon, 1 mile north from where the road leaves Comment
  RSA88662  Carex fissuricola F. W. Peirson 1930-8-3 9072 Inyo On margin of Heart Lake, Rock Creek Lake Basin. 3201 Comment
  RSA88678  Carex helleri F. W. Peirson 1934-7-21 11398 Inyo East slope of Rock Creek Lake Basin, northern Inyo County. 3476 Comment
  RSA88721  Carex albonigra F. W. Peirson 1930-8-7 9134 Inyo Rock Creek Lake Basin, Sierra Nevada 3399 Comment
  RSA88841  Carex multicostata F. W. Peirson 1933-8-13 10849 Inyo Heart Lake Meadow, Rock Creek Lake Basin; Alt. 10500 ft. 3201 Comment
  SD87637  Hecastocleis shockleyi F. W. Peirson 1936-4-5 Inyo Death Valley Region- Head of Titus Canyon, California-Nevada Line Comment
Read comments
Oct 17 2006
  SD87670  Spiraea densiflora Frank W. Peirson 1921-8-8 1954 Inyo Piute Pass, east slope Comment
  SD87817  Ivesia lycopodioides Frank W. Peirson 1940-8-10 12961 Inyo Rock Creek Lake Basin, on the delta at the inlet of Ryby Lake 3398 Comment
Read comments
May 31 2012
  SEINET179666  Agrostis lepida Frank W. Peirson 1933-8-11 Inyo Rock Creek Lake Basin, meadow at Heart Lake 3200 Comment
  UC1026430  Carex jonesii F. W. Peirson 1940-8-17 13571 Inyo Heart Creek Meadow Rock Creek Lake Basin 3230 Comment
  UC501541  Gentianella tenella subsp. tenella Frank W. Peirson 1931-7-21 9482 Inyo meadow at Heart Lake; Rock Creek Lake Basin 3200 Comment
  UC501639  Cryptantha confertiflora Frank W. Peirson 1932-5-8 9935 Inyo Wild Rose Canyon Panamint Mts. 1828 Comment
  UC501640  Cryptantha flavoculata Frank W. Peirson 1932-5-8 9934 Inyo Wild Rose Canyon Panamint Mts. 2133 Comment
  UC511734  Polemonium occidentale subsp. occidentale Frank W. Peirson 1933-8-19 Inyo Ruby Falls , Ruby Falls (Rock Creek Lake Basin) 3322 Comment
  UC511752  Oreostemma alpigenum var. andersonii Frank W. Peirson 1933-8-21 Inyo strip meadow about Upper Ruby Lake; Rock Creek Lake Basin 3505 Comment
  UC511892  Limosella aquatica Frank W. Peirson 1933-8-20 10791 Inyo Rock Creek Lake Basin, Heart Lake Meadow 3200 Comment
  UC638454  Potentilla pensylvanica var. ovium Frank W. Peirson 1933-8-20 10807 Inyo Rock Cr. Lake Basin Heart Lake Meadow (Heart Lake Meadow); , Heart Lake Meadow 3200 Comment
  UC643206  Draba sierrae Frank W. Peirson 1940-8-5 12949 Inyo steep e wall of canyon near the Transverse Ridge Rock Creek Lake Basin Rock Creek Lake Basin 3413 Comment
  UC643220  Boechera Frank W. Peirson 1940-8-6 12975 Inyo slope w Heart Lake; Rock Creek Lake Basin 3291 Comment
  UC643232  Triglochin palustris Frank W. Peirson 1940-8-4 Inyo Rock Creek Lake Basin 3261 Comment
  UCD85952  Koeleria macrantha F. W. Peirson 1933-8-11 s.n. Inyo Rock Creek Basin. In first meadow below Heart Lake. 3200 Comment
  UCD91084  Poa glauca subsp. rupicola F. W. Peirson 1933-8-5 13466 Inyo Rock Creek Lake Basin. 3413 Comment
  UCD93743  Trisetum spicatum F. W. Peirson 1933-8-21 10870 Inyo Sierra Nevada, Rock Creek Lake Basin, upper Ruby Lake. 3505 Comment
  CAS-BOT-BC10858  Mimulus suksdorfii Frank Warrington Peirson 1931-7-30 s.n. Inyo Rock Creek Lake Basin, Heart Lake 3200 Comment
  CAS-BOT-BC114824  Carex whitneyi Frank Warrington Peirson 1931-7-24 9415 Inyo Rock Creek Lake Basin. West shore Long Lake in dry location. 3261 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-BC117127  Carex spectabilis Frank Warrington Peirson 1934-7-22 11304 Inyo Rock Creek Lake Basin. Wet location along the stream flowing into the Upper Glacial Lake. 3505 Comment
  CAS-BOT-BC259294  Eriogonum lobbii Frank W. Peirson 1930-8-5 9089 Inyo Rock Creek Lake Basin. Slope west of Ruby Lake 3413 Comment
  CAS-BOT-BC279477  Chaenactis alpigena Frank W. Peirson 1933-8-8 s.n. Inyo Rock Creek Lake Basin 3474 Comment
  CAS-BOT-BC389804  Silene sargentii Frank W. Peirson 1937-8-7 s.n. Inyo Rock Creek Lake Basin. In the main gorge south of Long Lake 3291 Comment
  CAS-BOT-BC39771  Descurainia californica Frank W. Peirson 1931-7-17 9457 Inyo Rock Creek Lake Basin. Along escarpment west of Heart Lake. 3230 Comment
  CAS-BOT-BC41714  Draba densifolia Frank W. Peirson 1932-7-24 8549 a Inyo Inconsolable Range. 3657 Comment
  JEPS56564  Eriogonum rosense Frank W. Peirson 1934-7-21 Inyo Rock Creek Lake Basin; nw Inyo Co. 3444 Comment
  OBI21191  Luzula parviflora Frank W. Peirson 1937-8-10 Inyo Along stream tributary to Ruby Creek below the falls, Rock creek Lake Basin 3322 Comment
  PASA922  Calycoseris parryi Frank W. Peirson 1930-4-15 Inyo 9 miles south of Death Valley Junction 548 Comment
  POM171908  Juncus orthophyllus F. W. Peirson 1921-8-7 2567 Inyo East slope of Piute Pass, Sierra Nevada. 3354 Comment
  POM254413  Antennaria media F. W. Peirson 1940-8-2 12959 Inyo shore of Ruby Lake near outlet; Rock Creek Lake Basin, northern Inyo Co. 3399 Comment
  POM257955  Carex pellita F. W. Peirson 1937-8-6 s.n. Inyo East side of Rock Creek Lake Basin 3293 Comment
  POM91446  Psorothamnus polydenius F. W. Peirson 1938-7-8 12417 Inyo 14 mi. N of Independence, Inyo Co. Comment
  RSA0012632  Senecio scorzonella F. W. Peirson 1934-7-20 s.n. Inyo At Ruby Falls, Rock Creek Lake Basin. 3323 Comment
  RSA0012800  Senecio spartioides F. W. Peirson 1921-8-5 1443 Inyo Big Pine Creek, east slope of Sierra Nevada. 2287 Comment
  RSA0066140  Heuchera rubescens var. alpicola F. W. Peirson 1929-7-21 8518 Inyo Canyon south of South Lake, Bishop Creek. 3049 Comment
  RSA0076361  Sedum lanceolatum F. W. Peirson 1921-8-8 2717 Inyo East slope of Piute Pass. 3354 Comment
  RSA0087202  Orobanche fasciculata F. W. Peirson 1934-7-25 11281 Inyo At edge of Heart Lake Meadow, Rock Creek Lake Basin. 3215 Comment
  RSA65101  Eriogonum ovalifolium var. nivale F. W. Peirson 1921-8-18 2555 Inyo Taboose Pass, Sierra Nevada 3201 Comment
  RSA65251  Eriogonum ovalifolium var. nivale F. W. Peirson 1917-8-20 1751 a Inyo Green Lake, Sierra Nevada. Comment
  RSA65416  Cistanthe umbellata var. umbellata F. W. Peirson 1921-8-6 2621 Inyo Coyote Creek meadows, Sierra Nevada 3049 Comment
  RSA65663  Montia fontana F. W. Peirson 1917-8-21 s.n. Inyo Owens Valley, Sierra Nevada, Inyo County Comment
  RSA65665  Montia chamissoi F. W. Peirson 1930-8-7 9126 Inyo Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA65668  Montia chamissoi F. W. Peirson 1921-8-6 2622 Inyo Camp near Coyote Pass 3201 Comment
  RSA65790  Cleomella obtusifolia F. W. Peirson 1930-8-2 9044 Inyo Little Lake, western Mojave Desert. Comment
  RSA66010  Eriogonum rosense F. W. Peirson 1933-8-5 10778 Inyo Upper part of the Transverse Ridge, Rock Creek Lake Basin. 3415 Comment
  RSA66583  Lesquerella kingii F. W. Peirson 1932-5-8 9932 Inyo Wild Rose Canyon, Panamint Mountains. 2439 Comment
  RSA68697  Lilium pardalinum Frank W. Peirson 1937-8-4 12177 Inyo Upper part of Heart Lake Meadow, not far from the Ruby stream, Rock Creek Lake Basin. 3232 Comment
  RSA69426  Frasera tubulosa F. W. Peirson 1911-8-8 875 Inyo Cottonwood Creek, probably near Horseshoe Meadow, southern Sierra Nevada. Comment
  RSA69481  Luzula comosa F. W. Peirson 1937-8-4 12197 Inyo Escarpment at Heart Lake, Rock Creek Lake Basin. 3232 Comment
  RSA69741  Luzula parviflora F. W. Peirson 1921-8-7 2642 Inyo East slope of Piute Pass, Sierra Nevada. 3354 Comment
  RSA69809  Centaurium exaltatum F. W. Peirson 1921-8-2 2822 Inyo Owens River, 2 miles north of Lone Pine. Comment
  RSA70289  Juncus nevadensis F. W. Peirson 1937-8-8 12189 Inyo Near Heart Lake Meadow, Rock Creek Lake Basin, northern Inyo County. 3216 Comment
  RSA71884  Gilia stellata F. W. Peirson 1928-4-2 7811 Inyo Along foot of canyon wall and also on loose. Furnace Creek near Ryan, Death Valley. 610 Comment
  RSA74849  Phacelia frigida subsp. dasyphylla F. W. Peirson 1940-8-15 12955 Inyo Heart Lake, Rock Creek Lake Basin, Sierra Nevada. 3476 Comment
  RSA75359  Phacelia fremontii F. W. Peirson 1932-5-5 9876 Inyo Red lava formation, foot of red volcanic cone north of Little Lake, western Inyo Co. 1098 Comment
  RSA77821  Hackelia micrantha F. W. Peirson 1929-7-21 8520 Inyo Canyon south of South Lake, Bishop Creek, Sierra Nevada. 3125 Comment
  RSA77836  Hackelia micrantha F. W. Peirson 1930-8-7 9132 Inyo Ruby Lake, Rock Creek Lake Basin, extreme northern Inyo Co. 3399 Comment
  RSA78536  Carex pellita F. W. Peirson 1937-8-8 13592 Inyo Escarpment at Heart Lake, Rock Creek Lake Basin, northern Inyo County. 3232 Comment
  RSA78639  Phacelia curvipes F. W. Peirson 1946-4-20 13542 Inyo Gray s Camp. Comment
  RSA78640  Cryptantha confertiflora F. W. Peirson 1946-4-20 13543 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
  RSA79791  Cryptantha confertiflora F. W. Peirson 1914-08 S.N. Inyo Bishop, Owens Valley. Comment
  RSA80795  Pedicularis groenlandica F. W. Peirson 1931-7-20 9488 Inyo Ruby Falls, Rock Creek Lake Basin, east slope of Sierra Nevada. 3323 Comment
  RSA84214  Sedum lanceolatum F. W. Peirson 1931-7-22 9459 Inyo rocky places high above the south shore of Ruby Lake, Rock Creek Lake Basin, 3445 Comment
  RSA84392  Mitella breweri F. W. Peirson 1931-7-30 9461 Inyo Ruby stream , just below Ruby Lake, Rock Creek Lake Basin. 3323 Comment
  RSA85742  Potentilla flabellifolia F. W. Peirson 1940-8-2 12960 Inyo Along grassy border of stream from below Ruby Lake Basin, northern Inyo Co. 3390 Comment
  RSA85780  Sibbaldia procumbens F. W. Peirson 1931-7-18 9477 Inyo Road to Morgan Pass, Chickenfoot Lake region; Rock Creek Lake Basin. 3293 Comment
  RSA86637  Geum macrophyllum F. W. Peirson 1933-8-17 10797 Inyo Heart Lake Meadow, Rock Creek Lake Basin 3201 Comment
  RSA87002  Celtis reticulata F. W. Peirson 1917-8-1 1474 Inyo in chaparral west of Robinson's, Independence. Comment
  RSA90177  Astragalus lentiginosus var. semotus F. W. Peirson 1930-8-9 9155 Inyo Along ridge east of Heart Lake, Rock Creek Lake Basin, extreme northern Inyo Co. 3430 Comment
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Sep 13 2014
  RSA90218  Astragalus bernardinus F. W. Peirson 1929-7-20 8504 Inyo Green Lake Valley, Bishop Creek region, Sierra Nevada 3293 Comment
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Mar 29 2011
  RSA90242  Astragalus layneae F. W. Peirson 1932-5-6 9886 Inyo 2 miles west of Darwin. 1433 Comment
  RSA90613  Pyrrocoma apargioides F. W. Peirson 1921-8-7 1237 Inyo East slope of Piute Pass, Sierra Nevada. 3354 Comment
  RSA90620  Pyrrocoma apargioides F. W. Peirson 1937-8-6 12184 Inyo East side of Rock Creek Lake basin. 3293 Comment
  RSA90700  Chrysothamnus nauseosus subsp. albicaulis F. W. Peirson 1921-8-5 2716 Inyo Big Pine Creek, east slope of Sierra Nevada. 2287 Comment
  RSA90965  Erigeron breweri var. porphyreticus F. W. Peirson 1921-8-19 1283 Inyo Taboose Pass, Sierra Nevada 2439 Comment
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Nov 12 2010
  RSA91052  Carex microptera F. W. Peirson 1930-8-5 9104 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3598 Comment
  RSA91180  Lupinus caudatus F. W. Peirson 1930-8-6 9108 a Inyo Rock Creek Lake Basin, northern Inyo County. 3110 Comment
  RSA91301  Vicia americana F. W. Peirson 1919-8-2 2019 Inyo Grays on Kearsarge Trail, Sierra Nevada 1829 Comment
  RSA91434  Psorothamnus polydenius F. W. Peirson 1913-1 569 Inyo Owens Valley. Comment
  RSA91612  Carex congdonii F. W. Peirson 1930-8-5 9106 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3598 Comment
  RSA91619  Trisetum spicatum F. W. Peirson 1930-8-7 9133 Inyo Ruby Lake, Rock Creek Lake Basin. 3399 Comment
  RSA91625  Trisetum spicatum F. W. Peirson 1933-8-3 10871 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3201 Comment
  RSA91645  Carex vernacula F. W. Peirson 1934-7-20 11302 Inyo At Ruby Falls, Rock Creek Lake Basin, northern Inyo County. 3323 Comment
  RSA91679  Carex athrostachya F. W. Peirson 1929-7-19 8483 Inyo Bishop Creek at South Lake 3018 Comment
  RSA91978  Pleuraphis jamesii F. W. Peirson 1932-8-7 9915 Inyo North Fork of Hanaupah Canyon; Panamint Mountains 1982 Comment
  RSA91989  Ptilagrostis kingii F. W. Peirson 1937-8-4 12225 Inyo Escarpment at Heart Lake, Rock Creek Lake Basin. 3232 Comment
  RSA92312  Poa nervosa F. W. Peirson 1934-7-23 11311 Inyo Rock Creek Lake Basin 3232 Comment
  RSA92328  Poa nervosa F. W. Peirson 1934-7-27 11309 Inyo Among rocks in gorge below Mono Pass, Rock Creek Lake Basin, northern Inyo County, Alt 11500ft. 3506 Comment
  RSA92508A  Stylocline micropoides F. W. Peirson 1928-4-2 7792 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA92508B  Stylocline psilocarphoides F. W. Peirson 1928-4-2 7792 Inyo About 1 mile east of Bradbury Well; Death Valley Region. Comment
  RSA92620  Salix lasiolepis F. W. Peirson 1932-5-8 9933 Inyo Wild Rose Canyon, Panamint Mountains. 2439 Comment
  RSA92637  Salix planifolia F. W. Peirson 1937-8-8 s.n. Inyo Hidden Lake Valley, Rock Creek Lake Basin. 3201 Comment
  RSA92709  Salix arctica F. W. Peirson 1933-8-9 10850 Inyo Rock Creek Lake Basin. 3476 Comment
  RSA93010  Erigeron pygmaeus F. W. Peirson 1929-7-22 8530 Inyo Open country about 1 mile S of Long Lake, Bishop Creek Region 3354 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
  RSA93091  Erigeron tener F. W. Peirson 1934-7-28 11289 Inyo Rock Creek Lake Basin along the south slope of the Transverse Glacial Ridge. 3293 Comment
  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
  RSA93624  Antennaria corymbosa F. W. Peirson 1935-7-17 11521 Inyo Heart Lake Meadow, Rock Creek Lake Basin. 3216 Comment
  RSA93644  Antennaria rosea F. W. Peirson 1930-8-8 9139 Inyo West of Heart Lake, foot of rock parapet, northern Inyo County 3232 Comment
  RSA93650  Antennaria media F. W. Peirson 1934-7-21 11320 Inyo on east slope of Rock Creek Lake Basin, northern Inyo [Co.]. 3451 Comment
  RSA93719  Brickellia arguta F. W. Peirson 1932-5-9 9951 Inyo north of Keane Spring, Funeral Mountains 1249 Comment
  RSA93756  Artemisia spinescens F. W. Peirson 1932-5-6 9884 Inyo 2 miles west of Darwin. 1433 Comment
  RSA93819  Chaenactis douglasii var. douglasii F. W. Peirson 1921-8-6 2709 Inyo Trail out of Big Pine to Baker Creek, Sierra Nevada. 3049 Comment
  RSA93863  Encelia frutescens F. W. Peirson 1930-4-15 8722 Inyo Near Amargosa River 9 miles south of Shoshone. Comment
  RSA93865  Dugaldia hoopesii F. W. Peirson 1929-7-24 8555 Inyo Slope below Green Lake, Bishop Creek region. 3354 Comment
  RSA94415  Eriophyllum ambiguum var. paleaceum F. W. Peirson 1928-4-2 7778 Inyo About 1 mile south of Bradbury Well, Mojave Desert (Death Valley region). Comment
  RSA94487  Arnica chamissonis subsp. foliosa F. W. Peirson 1914-8-5 1419 Inyo North Fork of Bishop Creek Comment
  RSA94513  Arnica nevadensis F. W. Peirson 1930-8-5 9099 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3628 Comment
  RSA94515  Arnica amplexicaulis F. W. Peirson 1930-8-9 9159 Inyo In Ruby Stream, Rock Creek Lake Basin, northern Inyo Co. 3323 Comment
  RSA94518  Arnica mollis F. W. Peirson 1940-8-1 12978 Inyo Along road Southward from Heart Lake, Rock Creek Lake Basin, 3201 Comment
  RSA94542  Packera cana F. W. Peirson 1930-8-3 9058 Inyo east of Heart Lake, Rock Creek Lake Basin. 3200 Comment
  RSA94573  Artemisia cana F. W. Peirson 1940-8-17 12986 Inyo Heart Lake Meadow, Rock Creek Lake Basin. northern Inyo County. 3232 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
  RSA94698  Senecio werneriifolius F. W. Peirson 1930-8-5 9098 Inyo Gorge east of Mono Pass, Rock Creek Lake Basin 3598 Comment
  RSA94860  Arnica nevadensis F. W. Peirson 1940-8-7 12981 Inyo Slope above small lake east of Long lake (on wooded slope); Rock Creek Lake Basin 3262 Comment
  RSA94865B  Arnica diversifolia F. W. Peirson 1935-7-17 11523 Inyo Shores of Long Lake, Rock Creek Lake Basin; Sierra Nevada. 3262 Comment
  RSA94867  Arnica chamissonis subsp. foliosa F. W. Peirson 1930-8-3 9047 Inyo Hills about Heart Lake. On Rock Creek, Extreme northern part of county 3201 Comment
  RSA94903  Cirsium arizonicum F. W. Peirson 1914-1 s.n. Inyo Big Pine creek, E slope of Sierra Nevada Comment
  RSA95089  Calycoseris wrightii F. W. Peirson 1932-5-9 9952 Inyo Near Keane Spring, Funeral Mountains. 1250 Comment
  RSA95094  Calycoseris parryi F. W. Peirson 1930-4-15 8717 Inyo open desert along Amargosa River, 9 mi. S of Death Valley Junction 549 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
  RSA95164  Hieracium gracile F. W. Peirson 1933-8-14 10801 Inyo Slopes above the Morgan Pass Lakes, Rock Creek Lake Basin, northern Inyo County. 3354 Comment
  RSA97280  Pteryxia petraea F. W. Peirson 1930-8-9 9154 Inyo Along ridge east of Heart Lake, Rock Creek Lake Basin, extreme northern Inyo Co. 3430 Comment
  SEINET7571410 Image available Carex phaeocephala Frank W. Peirson 1934-7-24 s.n. Inyo Rock Creek Lake Basin. 3353 Comment
  SEINET7575699 Image available Carex spectabilis Frank W. Peirson 1934-7-22 s.n. Inyo Rock Creek Lake Basin. 3383 Comment
  SEINET7587560 Image available Carex heteroneura Frank W. Peirson 1933-8-11 10842 Inyo Rock Creek Lake Basin. 3200 Comment
  UC511764  Artemisia ludoviciana subsp. incompta Frank W. Peirson 1933-8-18 Inyo w shore Long Lake; Rock Creek Lake Basin 3261 Comment
  UC511816  Sisyrinchium idahoense Frank W. Peirson 1933-8-6 10773 Inyo upper part Heart Lake Meadow; Rock Creek Lake Basin 3230 Comment
  UC511852  Antennaria rosea Frank W. Peirson 1933-8-18 10794 Inyo Long Lake (n shore) Rock Cr. Lake Basin 3246 Comment
  UC511884  Sagina saginoides Frank W. Peirson 1933-8-6 10872 Inyo Rock Creek Lake Basin, Heart Lake Meadow 3200 Comment
  UC511901  Pyrrocoma racemosa var. sessiliflora Frank W. Peirson 1933-8-23 10851 Inyo about 6 mi Lone Pine 1127 Comment
  UC908202  Gilia ochroleuca subsp. ochroleuca Frank W. Peirson 1928-4-2 7805 Inyo 18 mi s Ryan (Death Valley Region); , s of Ryan Comment
  CAS-BOT-BC213432  Acmispon argophyllus var. argophyllus Frank W. Peirson 1937-5-30 12076 Kern Open flat about 1 mile below White Oak Lodge, Cottonwood Creek, Tehachapi Mts. 1524 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-BC252224  Eriogonum gracillimum F. W. Peirson 1925-3-1 5524 Kern Caliente Creek, foot of Tehachapi Grade Comment
  CAS-BOT-BC269904  Eriogonum nudum var. pubiflorum Frank W. Peirson 1927-5-29 7340 Kern Red Rock Canyon Comment
  CAS-BOT-BC77602  Peritoma arborea var. globosa Frank W. Peirson 1925-3-19 5503 Kern North slope Tehachapi Pass 457 Comment
  JEPS54818  Astragalus pachypus Frank W. Peirson 1928-4-5 Kern n slope Tehachapi Pass 609 Comment
  JEPS56457  Eriogonum pusillum Frank W. Peirson 1928-4-4 7831 Kern 15 mi on way to Mojave Randsburg; San Gabriel Mts. Comment
  PASA1560  Petalonyx nitidus Frank W. Peirson 1927-5-29 Kern Red Rock Canyon, Foot of rocky hills opposite sculptured rocks Comment
  PASA461  Eschscholzia minutiflora Frank W. Peirson 1930-5-13 Kern Red Rock Canyon 883 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
  POM231937  Calystegia occidentalis subsp. occidentalis F. W. Peirson 1937-5-30 12078 Kern Open flat about 1 mile below the White Oak Lodge, Cottonwood Creek. 1524 Comment
  RSA66772  Cleome isomeris F. W. Peirson 1925-3-19 5503 Kern North slope of Tehachapi Mountains. 457 Comment
  RSA69493  Mirabilis laevis var. retrorsa F. W. Peirson 1930-5-13 8900 Kern Red Rock Canyon. 884 Comment
  RSA69558  Mentzelia eremophila Mabel Peirson 1927-5-29 7341 Kern East slope of Walker Pass. 1220 Comment
  RSA70163  Dichelostemma capitatum subsp. capitatum F. W. Peirson 1925-3-19 5489 Kern N slope of Tehachapi Pass. 610 Comment
  RSA70372  Calochortus superbus Frank W. Peirson 1930-5-15 8898 Kern Hills northwest of Glenville, Greenhorn Range 1037 Comment
  RSA73004  Leptosiphon aureus F. W. Peirson 1927-5-29 7333 Kern 10 miles north of Red Rock canyon, Indian Wells Valley, Western Mojave Desert. Comment
  RSA73326  Clarkia speciosa subsp. polyantha F. W. Peirson 10682 Kern Walker Basin, road from caliente to Bodfish. Comment
  RSA73346  Clarkia xantiana F. W. Peirson 1933-7-9 10680 Kern About 6 miles from Caliente on road to Bodfish. Comment
  RSA74775  Phacelia purpusii F. W. Peirson 1933-7-9 10702 Kern On summit of hill between 100 and 200 yards west of Summit Camp, Greenhorn Mountains. 2073 Comment
  RSA75401  Camissonia boothii subsp. desertorum F. W. Peirson 1927-5-7 7271 Kern Muroc (10 miles south) Comment
  RSA75693  Camissonia campestris subsp. campestris F. W. Peirson 1925-3-20 5530 Kern 20 miles S of Bakersfield Comment
  RSA75894  Nemophila maculata F. W. Peirson 1930-5-14 8866 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
  RSA79472  Collinsia childii F. W. Peirson 1930-5-14 8850 Kern Road from Kernville to Glenville, east slope of Greenhorn range. 1524 Comment
  RSA82206  Trichostema ovatum F. W. Peirson 1916-8-30 1045 Kern near Bakersfield Comment
  RSA85054  Ephedra nevadensis F. W. Peirson 1932-5-5 9872 Kern East side of Walker Pass 1372 Comment
  SD87574  Chorizanthe membranacea Frank W. Peirson 1930-5-14 8844 Kern Kern River; steep hill slope near Power house 822 Comment
  SD87576  Chorizanthe spinosa Frank W. Peirson 1927-5-29 7336 Kern Red Rock Canyon Comment
  SD87617  Leptosiphon montanus Frank W. Peirson 1927-5-28 7313 Kern 22 miles from Bakersfield; Kern River Road. 609 Comment
  UC501574  Lupinus microcarpus var. horizontalis Frank W. Peirson 1932-5-5 8800 Kern Red Rock Canyon 883 Comment
  UC501620  Calochortus amoenus Frank W. Peirson 1930-5-15 8876 Kern se of Glenville; Greenhorn Range 1066 Comment
  UC511776  Galium bifolium Frank W. Peirson 1933-7-9 10698 Kern near dry meadow about 2 mi s Summit Camp; Summit Greenhorn Mts. 2072 Comment
  UC511859  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
  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
  UC511918  Penstemon speciosus Frank W. Peirson 1933-7-9 10701 Kern in clearing along Power Line near Summit Camp; Summit Greenhorn Mts. 2072 Comment
  UC908658  Linanthus aureus subsp. aureus Frank W. Peirson 1927-5-29 7333 Kern 10 mi n Red Rock Canyon; Indian Wells Valley Comment
  CAS-BOT-BC327661  Layia pentachaeta F. W. Peirson 1925-3-19 5507 Kern N. slope Tehachapi Comment
  CAS-BOT-BC362995  Rigiopappus leptocladus F. W. Peirson 1930-5-15 8884 Kern Greenhorn Range, hills southeast of Glenville [Glennville] 1005 Comment
  PASA1780  Malvastrum parryi Frank W. Peirson 1925-3-19 Kern Foot of Tehachapi Grade at Caliente Creek Comment
  PASA665  Erodium botrys Frank W. Peirson 1925-3-20 Kern 18 miles north of Bakersfield Comment
  PASA807  Lupinus benthamii Frank W. Peirson 1925-3-19 Kern North slope Techapi Pass 609 Comment
  PASA997  Collinsia bicolor Frank W. Peirson 1930-5-15 Kern Hills NW. of Glenville, Greenhorn Mts. 1066 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
  RSA66091  Tropidocarpum gracile F. W. Peirson 1925-3-20 5540 Kern In fields 18 miles N of Bakersfield. Comment
  RSA67346  Lepidium nitidum F. W. Peirson 1925-3-19 5506 Kern North slope of Tehachapi Pass 457 Comment
  RSA69977  Abronia pogonantha F. W. Peirson 1925-3-19 5511 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA73684  Leptosiphon bicolor F. W. Peirson 1925-3-19 5508 Kern North slope of Tehachapi Mountains. 457 Comment
Read comments
Mar 27 2011
  RSA74778  Phacelia ramosissima var. latifolia F. W. Peirson 1927-5-28 7304 Kern Along road at foot of steep canyon wall, Kern River Road, 16 miles from Bakersfield. 457 Comment
  RSA77642  Eucnide urens F. W. Peirson 1913-08 2074 Kern Mojave Desert, Kern County Comment
  RSA77761  Viola douglasii F. W. Peirson 1925-3-18 5477 Kern Open field, 1 mi. north of Tehachapi. 1220 Comment
  RSA79810  Penstemon laetus F. W. Peirson 1930-5-13 8834 Kern Abundant on partially wooded slopes east of Kern River and south of Cattell Creek. 845 Comment
  RSA79909  Solanum elaeagnifolium F. W. Peirson 1929-7-27 8566 Kern along the railroad track at south end of Mohave. Comment
  RSA90222  Astragalus didymocarpus var. didymocarpus F. W. Peirson 1925-3-19 5493 Kern North slope of Tehachapi Pass. 610 Comment
  RSA90746  Astragalus pachypus F. W. Peirson 1923-6-9 7692 Kern Cuddy Valley. 1372 Comment
  RSA92046  Bromus hordeaceus F. W. Peirson 1937-5-30 12081 Kern Ca. 2 miles above White Oak Lodge, Cottonwood Creek, Tahachapi Mountains. 1677 Comment
  RSA92498  Ancistrocarphus filagineus F. W. Peirson 1930-5-14 8858 Kern On road from Kernville to Glenville, Greenhorn Range 1601 Comment
  RSA92629  Pseudobahia heermannii F. W. Peirson 8855 Kern Road from Kernville to Glenville, Greenhorn Range, east slope 1524 Comment
  RSA92675  Eriophyllum lanatum var. obovatum F. W. Peirson 1933-7-9 10688 Kern Greenhorn Mountains near the summit camp; 6800 ft. 2073 Comment
  RSA93017  Lasthenia minor F. W. Peirson 1925-3-19 5519 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA94062  Hemizonia pallida F. W. Peirson 1925-3-19 5517 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA94964  Malacothrix glabrata F. W. Peirson 1925-3-19 5528 Kern Caliente Creek near foot of Tehachapi Grade. Comment
  RSA95231  Stephanomeria parryi F. W. Peirson 1932-5-5 9869 Kern Red Rock Canyon. 884 Comment
  RSA97262  Lomatium vaginatum F. W. Peirson 1925-3-18 s.n. Kern Tehachapi Pass. Comment
  RSA97278  Lomatium dasycarpum subsp. tomentosum F. W. Peirson 1930-5-15 8899 Kern Hills northwest of Glenville, Greenhorn Range 1037 Comment
  RSA97317  Lomatium vaginatum F. W. Peirson 1928-4-5 7832 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
  RSA65724  Claytonia parviflora subsp. parviflora F. W. Peirson, Mabel Peirson 1926-4-2 6582 Lake West end of Clear Lake. Comment
  RSA65757  Stellaria nitens F. W. Peirson, Mabel Peirson 1926-4-3 6611 Lake 3.3 miles north of Middletown. Comment
  RSA68725  Fritillaria affinis Frank W. Peirson, Mabel B. Peirson 1926-4-2 6576 Lake Grade down to Clear Lake, Hopland Road. Comment
  RSA68804  Delphinium nudicaule F. W. Peirson, Mabel Peirson 1926-4-2 6570 Lake Hopland Grade Comment
  RSA69601  Sagittaria cuneata F. W. Peirson 1925-8-8 6348 Lake At upper end of lower Blue Lake. Comment
  RSA87201  Lupinus albifrons var. albifrons F. W. Peirson 1926-4-2 6601 Lake Lower Lake Comment
  PASA2624  Ranunculus bloomeri Frank W. Peirson 1926-4-2 6594 Lake 3 miles east of Kelseyville on road to Lower Lake Comment
  POM89887  Fritillaria recurva Frank W. Peirson 1926-4-3 6622 Lake South of Middletown near Napa County line Comment
  RSA0012437  Senecio aronicoides F. W. Peirson, Mabel Peirson 1926-4-2 6597 Lake 5 miles east of Kelseyville on the road to the Lower Lake Comment
  RSA0034440  Monardella villosa subsp. subserrata F. W. Peirson 1928-7-4 7955 Lake 8 miles west of Lower Lake. Comment
  RSA65705  Silene californica F. W. Peirson 1928-7-4 7956 Lake 8 miles west of Lower Lake. Comment
  RSA92247  Layia platyglossa subsp. campestris F. W. Peirson 1926-4-2 6581 Lake Roadside, 0.5 mile south of Clear Lake. Comment
  RSA65960  Eriogonum umbellatum var. nevadense F. W. Peirson 1926-6-24 6848 Lassen On Madeline Plain. Comment
  RSA86630  Purshia tridentata var. tridentata F. W. Peirson 1932-7-20 10355 Lassen 20 miles SE of Susanville. Comment
  CAS-BOT-BC134966  Phoradendron bolleanum F. W. Peirson 1919-5-10 4682 Los Angeles Arrasler, San Gabirel Mts. 853 Comment
  CAS-BOT-BC158001  Garrya veatchii F. W. Peirson 1919-11-30 2723 Los Angeles Eaton Canyon, San Gabriel Mts. 609 Comment
  CAS-BOT-BC159275  Garrya veatchii Frank W. Peirson 1919-11-30 2723 Los Angeles Eaton Canyon 609 Comment
  CAS-BOT-BC179823  Centrostegia thurberi F. W. Peirson 1919-5-10 28 Los Angeles Arraster Creek, San Gabriel Mts. 914 Comment
  CAS-BOT-BC204749  Acmispon argophyllus var. argenteus Frank W. Peirson 1923-4-9 3468 Los Angeles 2 miles S.-E. of Wilsons [Wilson] Cove, San Clemente Comment
  CAS-BOT-BC205151  Lupinus elatus F. W. Peirson; Bulletin Torrey Club 1921-6-16 2438 Los Angeles Waterman Ridge Comment
  CAS-BOT-BC207240  Lupinus peirsonii Frank W. Peirson 1926-4-27 6671 Los Angeles Rock Cr., San Gabriel Range 1371 Comment
  CAS-BOT-BC240956  Collinsia parryi Frank W. Peirson 1918-5-26 193 Los Angeles Toll Road to Mt. Wilson at Hennigers Flat, San Gabriel Mts. 868 Comment
  CAS-BOT-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-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-BC276892  Chaenactis fremontii F. W. Peirson 1921-5-19 2409 Los Angeles Little Rock Creek, N slope of San Gabriel Mountains 960 Comment
  CAS-BOT-BC277830  Chaenactis santolinoides Frank W. Peirson 1920-6-10 241 Los Angeles Summit Mt. Wilson 1752 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-BC299524  Ericameria palmeri var. pachylepis Frank W. Peirson 1921-11-11 2597 Los Angeles Bouquet Canyon Comment
  CAS-BOT-BC304323  Galinsoga parviflora F. W. Peirson 1931-4-11 9375 Los Angeles 1077 New York Ave, Altadena Comment
  CAS-BOT-BC311264  Heterotheca sessiliflora subsp. echioides F. W. Peirson 1923-10-7 4163 Los Angeles Newhall at Railway Station, San Gabriel Mts. Comment
  CAS-BOT-BC342195  Logfia filaginoides F. W. Peirson 1921-6-20 5278 Los Angeles West fork San Gabriel River, San Gabriel Mts. 533 Comment
  CAS-BOT-BC356543  Pseudognaphalium biolettii Frank W. Peirson 1923-4-12 3465 Los Angeles Wilsons Cove. San Clemente Is. Comment
  CAS-BOT-BC402004  Gilia ochroleuca subsp. bizonata Frank W. Peirson 1921-5-20 4135 Los Angeles Little Rock Creek, San Gabriel Mts. 1005 Comment
  CAS-BOT-BC432203  Lithophragma bolanderi Frank W. Peirson 1922-6-3 3079 Los Angeles Collins Ranch, Liebre Mts. 1143 Comment
  CAS-BOT-BC46727  Arctostaphylos parryana Frank W. Peirson 1942-10-15 13434 Los Angeles Carleton Flats. San Gabriel Mts. Hill top in camp. Comment
  CAS-BOT-BC92818  Clematis pauciflora Frank W. Peirson 1921-3-6 2362 Los Angeles San Gabriel Wash. 213 Comment
  JEPS10258  Mimulus cardinalis F. W. Peirson 1918-7-9 194 Los Angeles San Antonio Canyon San Gabriel Mts. 1981 Comment
  JEPS10610  Mimulus pilosus Frank W. Peirson 1918-10-16 269 Los Angeles Pacoima Canyon San Gabriel Mountains 548 Comment
  JEPS11117  Penstemon labrosus Frank W. Peirson 1918-6-30 204 Los Angeles summit of Mt. Wilson San Gabriel Mountains, summit of Mt. Wilson 1752 Comment
  JEPS11538  Mimulus guttatus Frank W. Peirson 1918-6-1 198 Los Angeles Eaton Canyon San Gabriel Mountains 640 Comment
  JEPS11572  Keckiella cordifolia Frank W. Peirson 1924-6-16 Los Angeles Pasadena Comment
  JEPS11668  Orobanche californica subsp. feudgei Frank W. Peirson 1921-7-3 2489 Los Angeles San Gabriel Mountains. Ridge south of Swartout Valley. Comment
  JEPS11683  Orobanche bulbosa Frank W. Peirson 1919-5-14 417 Los Angeles e. trail Mt. Lowe; San Gabriel Mts., Mt. Lowe 1295 Comment
  JEPS12159  Solanum umbelliferum Frank W. Peirson 1918-6-1 185 Los Angeles Echo Mountain; San Gabriel Montains, Echo Mountain 1036 Comment
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Mar 3 2012
  JEPS12262  Anemopsis californica Frank W. Peirson 1919-6-15 503 Los Angeles San Gabriel Mountain, Rock Creek Rock Creek; San Gabriel Mountain, Rock Creek 1295 Comment
  JEPS12429  Lycium cooperi Frank W. Peirson 1921-5-19 1086 Los Angeles Little Rock Creek San Gabriel Mountains 944 Comment
  JEPS14677  Dodecatheon redolens Frank W. Peirson 1921-7-17 2516 Los Angeles Prairie Fork San Gabriel Riv , Prairie Fork-San Gabriel Riv (San Gabriel Mountains) 2133 Comment
  JEPS16475  Veronica peregrina subsp. xalapensis Frank W. Peirson 1919-6-5 499 Los Angeles San Antonio Canyon; San Gabriel Mountains, San Antonio Canyon 1341 Comment
  JEPS17041  Lomatium nevadense var. parishii Frank W. Peirson 1919-6-14 473 Los Angeles San Gabriel Mts., Rock Creek canyon 1706 Comment
  JEPS1977  Phacelia imbricata subsp. patula F. W. Peirson 1918-6-30 165 Los Angeles Mt. Wilson San Gabriel Mts. (summit) 1752 Comment
  JEPS20384  Heterotheca grandiflora Frank W. Peirson 1918-10-15 281 Los Angeles foot of Echo Mt. trail San Gabriel Mountains, Echo Mt. 548 Comment
  JEPS21270  Baccharis salicifolia subsp. salicifolia F. W. Peirson 1919-3-29 353 Los Angeles San Gabriel Mountains, Rubio Canon 548 Comment
  JEPS2623 Image available Habenaria leucostachys var. virida F. W. Peirson 1918-7-8 12 Los Angeles San Antonio Canyon San Gabriel Mts.; San Antonio Canyon, San Gabriel Mts. 1828 Comment
  JEPS27573  Gayophytum oligospermum Frank W. Peirson 1921-7-3 2483 Los Angeles Vincent Gulch San Gabriel Mountains 1981 Comment
  JEPS2994  Osmorhiza brachypoda Frank W. Peirson 1919-5-21 451 Los Angeles Arroyo Seco San Gabriel Mountains 609 Comment
  JEPS31666  Clarkia unguiculata Frank W. Peirson 1920-5-16 2086 Los Angeles Tujunga Canyon San Gabriel Mountains 457 Comment
  JEPS32410  Solidago confinis Frank W. Peirson 1920-9-12 1230 Los Angeles Bear Flat Baldy Trail, San Grabriel Mts. 1676 Comment
  JEPS34065  Pseudognaphalium stramineum F. W. Peirson 1920-9-17 2241 Los Angeles San Antonio Canyon San Gabriel Mountains, San Antonio Canyon 1341 Comment
  JEPS34718  Eriophyllum confertiflorum var. confertiflorum F. W. Peirson 1920-9-12 2276 Los Angeles s trail Baldy; San Gabriel Mts., Baldy 2438 Comment
  JEPS34886  Hulsea heterochroma F. W. Peirson 1919-7-3 514 Los Angeles Lukens Peak San Gabriel Mts. 1219 Comment
  JEPS34937  Monolopia lanceolata F. W. Peirson 1920-3-28 526 Los Angeles Tujunga Canyon San Gabriel Mts. (low hill at foot) 457 Comment
  JEPS35467  Helianthus annuus F. W. Peirson 1919-3-11 326 Los Angeles first canyon e Rubio Canyon; San Gabriel Mts. 548 Comment
  JEPS35537  Helenium bigelovii F. W. Peirson 1918-7-8 244 Los Angeles nw of North Ontario; San Antonio Canyon 1828 Comment
  JEPS35730  Eriogonum deflexum var. baratum Frank W. Peirson 1921-7-2 2471 Los Angeles Pallett Creek San Gabriel Mountains, Pallett Creek 1082 Comment
  JEPS36550  Pleiacanthus spinosus Frank W. Peirson 1923-8-31 4007 Los Angeles Blue Ridge, San Gabriel Mountains San Gabriel Mountains, Blue Ridge Comment
  JEPS38027  Quercus agrifolia Frank W. Peirson 1919-4-5 369 Los Angeles Mt. Wilson Toll Road San Gabriel Mountains Comment
  JEPS38441  Salix laevigata Frank W. Peirson 1919-3-30 359 Los Angeles San Gabriel Mts., Big Tujunga Canyon Comment
  JEPS38733  Arctostaphylos glauca F. W. Peirson 1919-1-29 315 Los Angeles trail San Gabriel Mts., Mt. Lowe 1341 Comment
  JEPS39440  Ambrosia salsola var. salsola F. W. Peirson 1921-5-19 1316 Los Angeles Little Rock Cr. San Gabriel Mts., Little Rock Cr. 944 Comment
  JEPS41458  Erigeron breweri var. jacinteus F. W. Peirson 1922-7-21 3204 Los Angeles Little Baldy San Gabriel Mountains (summit) 2910 Comment
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Dec 10 2014
  JEPS41860  Corethrogyne filaginifolia Frank W. Peirson 1918-10-15 229 Los Angeles Summit Sister Elsie Peak; San Gabriel Mts. Comment
  JEPS42284  Ceanothus oliganthus var. oliganthus Frank W. Peirson 1927-3-19 7116 Los Angeles Seminole Hot Springs Region Santa Monica Mountains 457 Comment
  JEPS42398  Ceanothus integerrimus Frank W. Peirson 1920-5-16 2138 Los Angeles Tujunga Canyon San Gabriel Mts. 518 Comment
  JEPS42575  Barbarea orthoceras Frank W. Peirson 1922-7-5 3166 Los Angeles Big Pines San Gabriel Mountains, Swartout Valley region (in the Swartout Valley region, n side of San Gabriel Mountains) 2072 Comment
  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
  JEPS44723  Prunus ilicifolia Frank W. Peirson 1918-5-21 83 Los Angeles San Gabriel Mountains, Arroyo Seco Arroyo Seco; San Gabriel Mountains, Arroyo Seco 381 Comment
  JEPS44779  Adenostoma fasciculatum Frank W. Peirson 1918-6-1 78 Los Angeles Mt. Wilson Toll Rd. 609 Comment
  JEPS45538  Cercocarpus betuloides var. betuloides Frank W. Peirson 1919-3-27 340 Los Angeles road out of Arroyo Seco San Gabriel Mountains 533 Comment
  JEPS45668  Rosa californica Frank W. Peirson 1918-7-9 84 Los Angeles San Antonio Canyon San Gabriel Mts. 1341 Comment
  JEPS49134  Ephedra nevadensis Frank W. Peirson 1921-5-19 1527 Los Angeles Little Rock Creek San Gabriel Mountains, Little Rock Creek 944 Comment
  JEPS49215  Ribes californicum var. hesperium Frank W. Peirson 1919-1-5 300 Los Angeles Monrovia Sawpit Canyon 457 Comment
  JEPS49281  Ribes amarum Frank W. Peirson 1919-4-5 316 Los Angeles Toll Road San Gabriel Range 1066 Comment
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Dec 10 2014
  JEPS49297  Ribes nevadense Frank W. Peirson 1918-5-26 72 Los Angeles Summit of Mount Wilson Mount Wilson Comment
  JEPS49446  Ribes cereum Frank W. Peirson 1918-6-18 516 Los Angeles Devils Punch Bowl San Gabriel Mts. 1219 Comment
  JEPS49874  Asclepias eriocarpa F. W. Peirson 1918-6-28 148 Los Angeles e of Rubio Canyon; San Gabriel Mts. 609 Comment
  JEPS50261  Viola purpurea subsp. venosa Frank W. Peirson 1921-6-15 2491 Los Angeles Trail Pine Flats to Chilao (San Gabriel Mountains); San Gabriel Mountains 1676 Comment
  JEPS50922  Silene antirrhina Frank W. Peirson 1919-5-14 421 Los Angeles Eaton Canyon San Gabriel Mountains, Eaton Canyon 731 Comment
  JEPS51093  Stellaria media Frank W. Peirson 1919-4-19 368 Los Angeles Pacoima Canyon; San Gabriel Mountains 609 Comment
  JEPS52466  Croton californicus Frank W. Peirson 1918-10-16 276 Los Angeles Pacoima Canyon San Gabriel Mts. (at entrance) 457 Comment
  JEPS5284  Antirrhinum multiflorum Frank W. Peirson 1918-6-30 190 Los Angeles Mt. Wilson Toll Road; San Gabriel Mountains 1143 Comment
  JEPS53182  Boechera sparsiflora Frank W. Peirson 1918-5-19 62 Los Angeles Echo Mountain San Gabriel Mts. 1036 Comment
  JEPS54639  Astragalus didymocarpus var. dispermus Frank W. Peirson 1919-5-10 398 Los Angeles Arrastre Canyon San Gabriel Mts., Arrastre Canyon 853 Comment
  JEPS55513  Lotus humistratus Frank W. Peirson 1919-5-11 406 Los Angeles Arraster Canyon San Gabriel Mountains 853 Comment
  JEPS56746  Eriogonum mohavense Frank W. Peirson 1919-5-11 407 Los Angeles Soledad Canyon San Gabriel Mountains, Soledad Canyon 807 Comment
  JEPS56929  Eriogonum cithariforme Frank W. Peirson 1921-5-20 2411 Los Angeles Little Rock Creek 975 Comment
  JEPS57016  Eriogonum elongatum var. elongatum Frank W. Peirson 1918-9-7 19 Los Angeles Toll Road (automobile road up Mt. Wilson) Mt. Wilson Comment
  JEPS57642  Dodecahema leptoceras Frank W. Peirson 1921-6-21 2455 Los Angeles West Fork San Gabriel River San Gabriel Mountains 640 Comment
  JEPS57709  Chorizanthe parryi var. parryi Frank W. Peirson 1919-5-21 446 Los Angeles Arroyo Seco San Gabriel Mountains, Arroyo Seco 381 Comment
  JEPS57770  Chorizanthe watsonii Frank W. Peirson 1919-5-10 394 Los Angeles Arraster Creek San Gabriel Mountains, Arraster Creek Comment
  JEPS59822  Grayia spinosa Frank W. Peirson 1921-5-19 1832 Los Angeles Little Rock Creek San Gabriel Mts., Little Rock Creek 975 Comment
  JEPS60628  Delphinium patens subsp. montanum Frank W. Peirson 1921-7-3 2479 Los Angeles Pinon Ridge San Gabriel Mountains (e end) 2286 Comment
  JEPS62190  Veratrum californicum var. californicum Frank W. Peirson 1922-7-6 3190 Los Angeles Big Pine Meadows San Gabriel Mountians 2087 Comment
  JEPS62700  Salvia dorrii Frank W. Peirson 1919-5-11 392 Los Angeles Arraster Canyon; San Gabriel Mts. 838 Comment
  JEPS62762  Salvia mellifera Frank W. Peirson 1918-6-1 181 Los Angeles Mt. Wilson San Gabriel Mts. (Toll Road) 609 Comment
  JEPS63015  Stachys bullata F. W. Peirson 1919-5-18 439 Los Angeles Monrovia Canyon San Gabriel Mts. 457 Comment
  JEPS63940  Toxicodendron diversilobum Frank W. Peirson 1919-3-6 325 Los Angeles Eaton Canyon San Gabriel Mts., Eaton Canyon 396 Comment
  JEPS66574  Arbutus menziesii Frank W. Peirson 1919-4-5 140 Los Angeles Old Mt. Wilson Trail; San Gabriel Mountains, Sierra Madre, Old Mt. Wilson Trail 914 Comment
  JEPS67113  Juncus torreyi Frank W. Peirson 1923-8-30 4011 Los Angeles Lone Pine Canyon, on the Clyde Ranch San Gabriel Mountains 1493 Comment
  JEPS68011  Plagiobothrys collinus Frank W. Peirson 1921-6-15 997 Los Angeles Pine Flats to Chilao; San Gabriel Mountains 1676 Comment
  JEPS69007  Eriastrum densifolium Frank W. Peirson 1919-6-18 482 Los Angeles Rock Creek San Gabriel Mountains 1295 Comment
  JEPS69139  Loeseliastrum matthewsii Frank W. Peirson 1921-5-19 952 Los Angeles Little Rock Creek San Gabriel Mts., Little Rock Creek 1036 Comment
  JEPS69537  Gilia capitata subsp. abrotanifolia Frank W. Peirson 1919-4-19 384 Los Angeles Pacoima Canyon San Gabriel Mountains, Pacoima Canyon 670 Comment
  JEPS69584  Gilia diegensis Frank W. Peirson 1919-4-19 385 Los Angeles Pacoima Canyon San Gabriel Mountains, Pacoima Canyon 548 Comment
  JEPS71118  Phlox gracilis Frank W. Peirson 1921-7-3 2484 Los Angeles e end Pinyon Ridge; San Gabriel Mountains 2286 Comment
  JEPS79971  Rosa woodsii var. ultramontana Frank W. Peirson 1919-6-14 470 Los Angeles Big Rock Creek Canyon; San Gabriel Mts. 1676 Comment
  JEPS85628  Keckiella ternata var. ternata Frank W. Peirson 1918-8-6 263 Los Angeles Mt. Wilson; San Gabriel Mountains 1584 Comment
  JEPS85719  Penstemon spectabilis var. subviscosus Frank W. Peirson 1924-6-16 Los Angeles near Pasadena (foothills of the San Gabriel Mountains); San Gabriel Mountains Comment
  PASA1039  Veronica arvensis Frank W. Peirson 1919-4-25 Los Angeles 1077 New York Avenue, Altadena Comment
  PASA1094  Lotus humistratus Frank W. Peirson 1919-5-11 Los Angeles Arraster Creek, San Gabriel Mts. 853 Comment
  PASA1701  Solidago confinis Frank W. Peirson 1920-9-12 Los Angeles Bear Flat, trail to Mt. San Antonio 1706 Comment
  PASA1815  Corethrogyne filaginifolia Frank W. Peirson 1919-10-26 Los Angeles Foot of Rubio Canyon, Altadena 548 Comment
  PASA2796  Fritillaria pinetorum F. W. Peirson 1921-7-18 Los Angeles San Gabriel Mtns., Mt. Williamson 2316 Comment
  PASA445  Canbya candida Frank W. Peirson 1926-4-26 Los Angeles 6 miles west of Rock Creek (old road). Mohave desert Comment
  PASA950  Senecio lyonii Frank W. Peirson 1923-4-12 Los Angeles Wilson Cove, San Clemente Island Comment
  PASA991  Castilleja plagiotoma Frank W. Peirson 1921-7-3 Los Angeles Blue Ridge, San Gabriel Mts. 2285 Comment
  POM11156  Cystopteris fragilis F. W. Peirson 1920-9-15 s.n. Los Angeles Mt. San Antonio, north slope 2819 Comment
  POM358609  Galinsoga parviflora var. parviflora F. W. Peirson 1931-4-11 9375 Los Angeles 1077 New York Avenue, Altadena. Comment
  POM9734  Equisetum telmateia var. braunii F. W. Peirson 1920-4-25 s.n. Los Angeles Arroyo Seco, Pasadena 411 Comment
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Sep 26 2014
  POM9745  Galium angustifolium subsp. gabrielense F. W. Peirson 1919-6-7 7677 Los Angeles Cow Canyon divide, San Antonio Creek Region 1372 Comment
  POM9939  Calochortus clavatus var. gracilis Frank W. Peirson 1921-6-21 2468 Los Angeles West Fork of San Gabriel River. 686 Comment
  RSA0083644  Sedum spathulifolium F. W. Peirson 1921-6-21 2472 Los Angeles West Fork of San Gabriel River. 686 Comment
  RSA100222  Lonicera interrupta F. W. Peirson 1919-6-14 4504 Los Angeles Rock Creek, north slopes of San Gabriel Mts. 1295 Comment
  RSA442865  Sphaeralcea emoryi subsp. variabilis F. W. Peirson 1921-5-18 s.n. Los Angeles Palmdale, Antelope Valley. Comment
  RSA64884  Oxytheca parishii var. parishii F. W. Peirson 1921-6-18 5350 Los Angeles Divide north of Mt. Islip 2043 Comment
  RSA65149  Eriogonum fasciculatum var. foliolosum F. W. Peirson 1919-7-3 513 Los Angeles San Gabriel Mountains: Lukens Peak 915 Comment
  RSA65162  Dodecahema leptoceras F. W. Peirson 1920-4-26 2113 Los Angeles Santa Anita Wash, S base of San Gabriel Mts. 213 Comment
  RSA65169  Dodecahema leptoceras F. W. Peirson 1951-1 1777 Los Angeles Rubio Wash, Altadena Comment
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Dec 17 2015
  RSA65373  Atriplex serenana F. W. Peirson 1920-6-22 1818 Los Angeles Bassett, near El Monte. Comment
  RSA65434  Calandrinia breweri F. W. Peirson 1918-5-4 1859 Los Angeles Summit of Santa Monica Range, above Brents on the Malibu Comment
  RSA65703  Silene gallica F. W. Peirson 1919-1 420 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA65954  Eriogonum umbellatum var. canifolium F. W. Peirson 1929-7-1 8446 Los Angeles Mt. Pacifico: upper part of trail, San Gabriel Mountains. 1982 Comment
  RSA65994  Eriogonum umbellatum var. munzii F. W. Peirson 1923-8-30 4684 Los Angeles Le Montaine: north of Big Pines; norh side of San Gabriel Mountains 2287 Comment
  RSA66070  Barbarea orthoceras F. W. Peirson 1922-7-5 3166 Los Angeles Big Pines Meadow, north side of San Gabriel Mountains 2072 Comment
  RSA66083  Brassica rapa F. W. Peirson 1918-03 s.n. Los Angeles At Altadena. Comment
  RSA66299  Stylomecon heterophylla F. W. Peirson 1918-5-5 1889 Los Angeles along road to [Brents] on the Malibu, Santa Monica Mts. Comment
  RSA66765  Meconella denticulata F. W. Peirson 1920-3-28 36 Los Angeles Tujunga Canyon: small side canyon in lower Tujunga. 488 Comment
  RSA67146  Galium grande F. W. Peirson 1919-5-18 448 Los Angeles Ridge between Monrovia and Fish Canyons 1067 Comment
  RSA68650  Calochortus kennedyi var. kennedyi Frank W. Peirson 1923-5-26 4099 Los Angeles Rock Creek, north slope of San Gabriel Mts., 1524 Comment
  RSA68664  Zigadenus fremontii Frank W. Peirson 1918-5-5 1687 Los Angeles Brents on the Malibu, Santa Monica Mountains. Comment
  RSA68671  Calochortus catalinae Frank W. Peirson 1920-5-16 2146 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains. 457 Comment
  RSA68723  Fritillaria pinetorum Frank W. Peirson 1921-6-18 2454 Los Angeles North slope of Mt. Williamson, San Gabriel Mountains 2317 Comment
  RSA69566  Mentzelia ravenii F. W. Peirson 1919-5-10 395 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains. 915 Comment
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Feb 20 2013
  RSA69951  Grayia spinosa F. W. Peirson 1926-4-26 6654 Los Angeles about 1 mile east of Palmdale Comment
  RSA70081  Platanthera sparsiflora Frank W. Peirson 1919-6-15 505 Los Angeles Rock Creek, north slope of San Gabriel Mountains. 1296 Comment
  RSA70172  Allium monticola F. W. Peirson 1920-6-10 1 Los Angeles San Gabriel Mountains, trail along west slope of Mt. Markham 1646 Comment
  RSA70220  Allium haematochiton F. W. Peirson 1921-4-21 2401 Los Angeles Trail below Sycamore Flat, on way to San Dimas, San Gabriel Mountains. Alt. 2600 ft. 793 Comment
  RSA70294  Juncus duranii F. W. Peirson 1921-7-17 2844 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2134 Comment
  RSA70396  Chamaesyce serpillifolia F. W. Peirson 2039 Los Angeles Laurel Canyon, Santa Monica Mts. Comment
  RSA70453  Allium burlewii F. W. Peirson 1921-6-16 2842 Los Angeles north slope of Mt. Waterman 2133 Comment
  RSA70455  Allium burlewii F. W. Peirson 1918-6-17 4 Los Angeles Summit of North Baldy, San Gabriel Mts. 2820 Comment
  RSA70466  Allium lacunosum var. davisiae F. W. Peirson 1921-6-15 2665 Los Angeles Trail from Pine Flats to Chilao 1677 Comment
  RSA70493  Erodium moschatum F. W. Peirson 1919-2-28 2023 Los Angeles At Frank Peirson residence, 1085 New York Drive, Altadena Comment
  RSA70498  Geranium californicum F. W. Peirson 1922-7-6 3185 Los Angeles Swartout Valley region. Big Pines, north side of San Gabriel Mtns. 2073 Comment
  RSA70526  Calochortus invenustus Frank W. Peirson 1922-7-5 3188 Los Angeles Mountain north of Big Pines 2286 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
  RSA71859  Allophyllum divaricatum F. W. Peirson 1923-10-26 293 Los Angeles Big Dalton Canyon, San Gabriel Mountains. 762 Comment
  RSA72170  Epilobium ciliatum subsp. ciliatum F. W. Peirson 765 Los Angeles Long Beach. Comment
  RSA72177  Epilobium ciliatum subsp. ciliatum F. W. Peirson 1923-10-7 4165 Los Angeles Santa Clara River crossing north of Saugus. Comment
  RSA72183  Epilobium glaberrimum subsp. glaberrimum F. W. Peirson 1921-7-17 2499 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2012 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
  RSA72333  Epilobium canum subsp. canum F. W. Peirson 1916-8-31 758 Los Angeles Ridge road about 2 miles north of Sandberg's, Liebre Mts. 1143 Comment
  RSA73012  Linanthus concinnus F. W. Peirson 365 Los Angeles Summit of Mt. Lowe. Comment
  RSA73023  Linanthus parryae F. W. Peirson 1921-5-20 940 Los Angeles Mojave Desert, Little Rock Creek, San Gabriel Mountains 1067 Comment
  RSA73290  Linanthus californicus F. W. Peirson 1918-5-4 158 Los Angeles Summit of Santa Monica Range, above Brents on the Malibu Comment
  RSA73300  Clarkia dudleyana F. W. Peirson 1905-5-28 442 Los Angeles Rubio Wash, south of San Gabriel Mts. Comment
  RSA73307  Clarkia bottae F. W. Peirson 1919-5-18 432 Los Angeles San Gabriel Mtns. Monrovia Canyon. 305 Comment
  RSA74780  Phacelia ramosissima var. latifolia F. W. Peirson 1929-6-30 8424 Los Angeles Aliso Creek at Tie Canyon. 1357 Comment
  RSA74813  Turricula parryi F. W. Peirson 1921-6-20 2460 Los Angeles North Fork of San Gabriel River. 732 Comment
  RSA74959  Phacelia douglasii F. W. Peirson 1922-6-3 3085 Los Angeles East of Oak Grove Creek Divide, Liebre Mts. 1174 Comment
  RSA75134  Nemacladus ramosissimus F. W. Peirson 1925-4-23 5784 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA75352  Phacelia fremontii F. W. Peirson 1922-6-3 4478 Los Angeles East of Oak Grove Creek Divide, Liebre Mts. 1174 Comment
  RSA75430  Oenothera laciniata F. W. Peirson 1922-6-14 3093 Los Angeles 1085 New York Drive, Altadena. Comment
  RSA75437  Camissonia hirtella F. W. Peirson 1918-5-4 2309 Los Angeles Summit of Santa Monica Range, above Brents on the Malibu Comment
  RSA75442  Camissonia hirtella F. W. Peirson 1929-6-30 8421 Los Angeles Clearing below the road near Tie Canyon stream; Aliso Creek, San Gabriel Mts. 1357 Comment
  RSA75518  Phacelia fremontii F. W. Peirson 1929-6-30 8423 Los Angeles Aliso Creek at Tie Canyon. 1357 Comment
  RSA75529  Phacelia fremontii F. W. Peirson 1919-5-10 400 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains. 915 Comment
  RSA76237  Leptosiphon liniflorus F. W. Peirson 1951-6-23 942 Los Angeles Near Kewen Lake, Pasadena Comment
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Mar 27 2009
  RSA77095  Lyonothamnus floribundus subsp. aspleniifolius F. W. Peirson 1923-4-10 3454 Los Angeles North slope canyon about 10 miles southeast of Wilson's Cove, San Clemente Island. Comment
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Jan 12 2015
  RSA77143  Ceanothus crassifolius F. W. Peirson 1926-3-20 6514 Los Angeles Arroyo Seco, near Pasadena 915 Comment
  RSA77145  Ceanothus crassifolius F. W. Peirson 1919-1-19 302 Los Angeles Rubio Canyon, San Gabriel Mountains. 549 Comment
  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
  RSA77172  Rhus integrifolia F. W. Peirson 1925-2-22 240 Los Angeles Point Fermin Comment
  RSA77220  Fremontodendron californicum subsp. californicum F. W. Peirson 1921-5-20 773 Los Angeles Little Rock Creek 1067 Comment
  RSA77239  Eriodictyon crassifolium var. nigrescens F. W. Peirson 1918-5-19 171 Los Angeles north of Dawn Station on trail to Dawn Mine, Millards Canyon Comment
  RSA77637  Marah macrocarpa F. W. Peirson 1921-2-26 4507 Los Angeles Topango Canyon Divide. 488 Comment
  RSA79456  Scrophularia villosa F. W. Peirson 1922-4-10 3438 Los Angeles San Clemente Island, about 10 miles SE of Wilson's Cove Comment
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May 16 2008
  RSA79838  Penstemon heterophyllus subsp. heterophyllus F. W. Peirson 202 Los Angeles Devils Gate, Arroyo Seco, west of Pasadena. Comment
  RSA79870  Penstemon speciosus F. W. Peirson 1922-7-5 3193 Los Angeles Big Pines Meadow, north side of San Gabriel Mountains 2073 Comment
  RSA80009  Cryptantha micrantha F. W. Peirson 1920-5-3 5305 Los Angeles Tujunga Wash, west end of San Gabriel Mountains 335 Comment
  RSA80335  Lycium cooperi F. W. Peirson 1921-5-19 1086 Los Angeles Little Rock Creek 945 Comment
  RSA80391  Solanum umbelliferum F. W. Peirson 1918-6-16 186 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1448 Comment
  RSA80421  Linaria canadensis var. texana F. W. Peirson 1920-5-12 2129 Los Angeles San Gabriel Wash at Foothill boulevard, west of Azusa. 183 Comment
  RSA80486  Mimulus palmeri F. W. Peirson 1907-7-9 1124 Los Angeles Pine Flats Comment
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Dec 10 2014
  RSA80682  Helianthemum scoparium F. W. Peirson 1920-4-22 115 Los Angeles foothill of Rubio Canyon 533 Comment
  RSA80694  Epilobium densiflorum F. W. Peirson 1907-7-9 2085 Los Angeles Pine Flats, San Gabriel Mts. 1524 Comment
  RSA80755  Cryptantha pterocarya F. W. Peirson 1919-6-4 477 Los Angeles Rock Creek, north slope of San Gabriel Mts. 1692 Comment
  RSA81452  Castilleja plagiotoma F. W. Peirson 1921-7-3 2727 Los Angeles Blue Ridge, south of Swartout Valley 2287 Comment
  RSA81476  Castilleja plagiotoma F. W. Peirson 1919-5-10 1148 Los Angeles Arraster [Arrastre] Creek, San Gabriel Mountains. 838 Comment
  RSA82128  Orobanche californica subsp. feudgei F. W. Peirson 1921-5-20 2745 Los Angeles Little Rock Creek, San Gabriel Mts. 976 Comment
  RSA82280  Castilleja foliolosa F. W. Peirson 1919-5-10 430 Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains. 915 Comment
  RSA82396  Salvia spathacea F. W. Peirson 1920-5-8 1054 Los Angeles San Raphael Hills. 457 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
  RSA83433  Pycnanthemum californicum F. W. Peirson 1921-7-15 2731 Los Angeles Main branch of San Gabriel River. 915 Comment
  RSA83435  Pycnanthemum californicum F. W. Peirson 1951-1 184 Los Angeles San Antonio Canyon. Comment
  RSA84384  Lithophragma heterophyllum F. W. Peirson 1921-4-3 2395 Los Angeles Pacoima Canyon, W end of San Gabriel Mts. 549 Comment
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Oct 6 2009
  RSA84422  Aquilegia formosa F. W. Peirson 1923-5-25 4168 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1296 Comment
  RSA84469  Clematis pauciflora F. W. Peirson 1921-3-6 s.n. Los Angeles San Gabriel Wash. 213 Comment
  RSA84867  Ranunculus cymbalaria var. saximontanus F. W. Peirson 1919-6-15 486 Los Angeles South side of Rock Creek, north slope of San Gabriel Mountains. 1296 Comment
  RSA84950  Ribes roezlii F. W. Peirson 1921-6-18 4436 Los Angeles Windy Camp, Mt Islip, San Gabriel Mountains. 2256 Comment
  RSA85073  Crossosoma californicum F. W. Peirson 1923-4-11 3444 Los Angeles In canyon below farm buildings at Eagle Ranch, San Clemente Island Comment
  RSA85787  Drymocallis glandulosa var. wrangelliana F. W. Peirson 696 Los Angeles Laurel Canyon Comment
  RSA86363  Pinus monophylla F. W. Peirson 1919-6-15 2328 Los Angeles Rock Creek 1250 Comment
  RSA86531  Pinus flexilis F. W. Peirson 3997 Los Angeles Blue Ridge 2591 Comment
  RSA86647  Purshia tridentata var. glandulosa F. W. Peirson 1926-4-27 6668 Los Angeles San Gabriel Mountains. North side of San Gabriel Mountains, Rock Creek. 1296 Comment
  RSA86673  Cercocarpus betuloides var. betuloides F. W. Peirson 1919-3-27 340 Los Angeles Road out of Arroyo Seco. 549 Comment
  RSA86836  Rubus ursinus F. W. Peirson 1919-4-19 380 Los Angeles Pacoima Canyon, western end of San Gabriel Mountains. 610 Comment
  RSA86938  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1919-5-10 s.n. Los Angeles Arraster [Arrastre] Creek. North base of San Gabriel Mountains 915 Comment
  RSA87117  Agrostis stolonifera F. W. Peirson 1923-8-31 4015 Los Angeles Big Pines Camp, north side of San Gabriel Mountains. 2088 Comment
  RSA87191  Lupinus excubitus var. johnstonii F. W. Peirson 1924-5-27 4637 Los Angeles Strawberry Peak, San Gabriel Mountains. Comment
  RSA87351  Elymus stebbinsii F. W. Peirson 1920-6-10 2158 Los Angeles Maple Springs Trail to Mt. Lowe 1219 Comment
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Jul 19 2008
  RSA87441  Melica imperfecta F. W. Peirson 1923-4-12 3420 Los Angeles Wilson's Cove, San Clemente Island Comment
  RSA94159  Hulsea heterochroma F. W. Peirson 1919-7-3 514 Los Angeles San Gabriel Mts: on Lukens Peak trail. 1220 Comment
  RSA94376  Madia exigua F. W. Peirson 1923-5-21 3511 Los Angeles Fish Canyon 914 Comment
  SEINET209192  Artemisia californica F. W. Peirson 1918-9-15 245 Los Angeles Los Angeles County: Near foot of Sister Elsie Peak trail. San Gabriel Mountains. 640 Comment
  UC483092  Salix exigua var. hindsiana Frank W. Peirson 1932-4-17 9859 Los Angeles about Lovejoy Dam; Mohave Desert, Lovejoy Buttes 762 Comment
  UC511915  Lepidium perfoliatum Frank W. Peirson 1933-5-13 10666 Los Angeles 12 mi ne Lancaster Comment
  UC566788  Sanicula arguta Frank W. Peirson 1923-4-9 3429 Los Angeles near Wilson Cove (San Clemente Island); San Clemente Island Comment
  UC908542  Eriastrum pluriflorum Frank W. Peirson 1927-5-7 7268 Los Angeles 12 mi s Muroc Comment
  CAS-BOT-BC17666  Carex alma Frank W. Peirson 1918-5-21 1636 Los Angeles San Gabriel Mountains. Arroyo Seco Canyon. Comment
  CAS-BOT-BC263041  Eriogonum maculatum Frank W. Peirson 1927-5-7 7264 Los Angeles 4 miles east of Lancaster Comment
  CAS-BOT-BC344377  Madia exigua Frank W. Peirson 1923-5-21 3511 Los Angeles Fish Canyon, San Gabriel Mts. 914 Comment
  CAS-BOT-BC402079  Gilia ochroleuca subsp. vivida F. W. Peirson 1929-7-1 8438 Los Angeles Summit Mt. Pacifico, San Gabriel Mts. 2148 Comment
  JEPS11361  Mimulus nasutus Frank W. Peirson 1920-5-6 2125 Los Angeles Fish Canyon San Gabriel Mountains 609 Comment
  JEPS11453  Mimulus guttatus Frank W. Peirson 1918-8-6 259 Los Angeles old trail to Mt. Wilson; San Gabriel Mountains 838 Comment
  JEPS11574  Penstemon centranthifolius Frank W. Peirson 1918-5-26 200 Los Angeles Henniger Flats San Gabriel Mountains, Henniger Flats 868 Comment
  JEPS11806  Heterocodon rariflorum Frank W. Peirson 1921-6-14 1210 Los Angeles Trail Fork San Gabriel; San Gabriel Mountains 990 Comment
  JEPS14005 Image available Osmorhiza brachypoda Frank W. Peirson 451 a Los Angeles Arroyo Seco San Gabriel Mountains; Arroyo Seco, San Gabriel Mts. 609 Comment
  JEPS2672 Image available Orobanche valida Frank W. Peirson and Mabel B. Peirson 1928-6-2 7937 Los Angeles South Fork Rock Creek San Gabriel Mts.; South Fork Rock Creek, San Gabriel Mts., Los Angeles Co. 1905 Comment
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Jan 24 2011
  JEPS31794  Camissoniopsis hirtella F. W. Peirson 1918-5-26 128 Los Angeles Henniger Flats San Gabriel Mts. 868 Comment
  JEPS36539  Hypochaeris glabra F. W. Peirson 1920-5-14 1469 Los Angeles Arroyo Seco; San Gabriel Mts. 441 Comment
  JEPS36692  Stephanomeria virgata subsp. virgata F. W. Peirson 1918-11-2 295 Los Angeles Henniger Flats San Gabriel Mts. 868 Comment
  JEPS39882  Rumex conglomeratus Frank W. Peirson 1919-6-5 463 Los Angeles San Antonio Canyon San Gabriel Mountains 1310 Comment
  JEPS40141  Arceuthobium campylopodum Frank W. Peirson 1921-6-15 2322 Los Angeles near Chilao San Gabriel Mtns 1645 Comment
  JEPS42751  Mentzelia micrantha Frank W. Peirson 1918-6-12 119 Los Angeles San Gabriel Mts., Lower Rubio Canyon 579 Comment
  JEPS43822  Clarkia rhomboidea Frank W. Peirson 1920-6-10 2161 Los Angeles trail by Mt. Markham; San Gabriel Mountains 1645 Comment
  JEPS43824  Clarkia epilobioides Frank W. Peirson 1919-5-18 433 Los Angeles hills e Monrovia Canyon; San Gabriel Mountains 457 Comment
  JEPS43881  Epilobium glaberrimum subsp. glaberrimum Frank W. Peirson 1921-7-17 2499 Los Angeles Prairie Fork <of> San Gabriel Riv. San Gabriel Mountains 2011 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
  JEPS5136  Plectritis ciliosa subsp. insignis Frank W. Peirson 1925-4-23 5807 Los Angeles San Gabriel Canyon, below Forks San Gabriel Canyon 365 Comment
  JEPS55896  Lotus scoparius Frank W. Peirson 1918-6-12 98 Los Angeles e of Rubio Canyon; San Gabriel Mountains 609 Comment
  JEPS61153  Amsinckia intermedia Frank W. Peirson 1919-3-27 333 Los Angeles foot of Arroyo Seco Canyon; San Gabriel Mountains 381 Comment
  LA97922  Mimulus guttatus Frank W. Peirson; 1923-4-10 3471 Los Angeles San Clemente Island, South slope canyon about 5 mi SE of Eagle Ranch Comment
  PASA1742  Haplopappus cooperi Frank W. Peirson 1921-5-19 Los Angeles Little Rock Creek Comment
  PASA1801  Aster canescens Frank W. Peirson 1923-8-30 Los Angeles North of Big Pines Auto Camp 1310 Comment
  PASA2063  Streptanthus major Frank W. Peirson 1933-7-5 Los Angeles Mountain north of Big Pines Camps 2133 Comment
  PASA322  Malacothrix clevelandii Frank W. Peirson 1923-5-21 Los Angeles Fish Canyon, San Gabriel Mts. 792 Comment
  PASA350  Uropappus linearifolius Frank W. Peirson 1919-5-10 Los Angeles Arraster Creek, San Gabriel Mts. 914 Comment
  PASA596  Mirabilis laevis var. glutinosa Frank W. Peirson 1930-7-10 Los Angeles Big Rock Creek 1371 Comment
  PASA657  Lupinus densiflorus var. mcgregorii Frank W. Peirson 1923-6-27 Los Angeles Rock Creek, San Gabriel Mts. Comment
  PASA924  Crepis acuminata Frank W. Peirson 1921-7-17 Los Angeles Praire Fork of the San Gabriel River 2011 Comment
  POM12544  Thlaspi arvense F. W. Peirson 1919-2-23 s.n. Los Angeles Henninger Flats. N of Pasadena. 869 Comment
  POM175491  Descurainia pinnata subsp. halictorum F. W. Peirson 1922-7-6 5329 Los Angeles Big Pines Camp 2088 Comment
  POM175548  Heterocodon rariflorum F. W. Peirson 1921-6-14 1210 Los Angeles Short Cut Canyon. 991 Comment
  POM19150  Heliotropium curassavicum F. W. Peirson 1923-5-27 6891 Los Angeles Pallett Creek, San Gabriel Mts. Comment
  POM93103  Corethrogyne filaginifolia var. californica F. W. Peirson 1264 Los Angeles Coldwater Canyon, Santa Monica Mts. Comment
  POM9685  Lupinus formosus var. formosus F. W. Peirson 1919-5-10 704 Los Angeles Arraster Creek 915 Comment
  POM9689  Astragalus didymocarpus var. dispermus F. W. Peirson 1919-5-11 398 Los Angeles Arraster [Arrastre] Creek, north slope of San Gabriel Mts. 853 Comment
  POM9942  Layia glandulosa F. W. Peirson 1921-7-3 s.n. Los Angeles 2 miles east of Rock Creek 2287 Comment
  POM9944  Trichostema lanatum F. W. Peirson 1918-6-15 s.n. Los Angeles Mint Canyon. Comment
  RSA0001998  Radicula sinuata var. truncata F. W. Peirson 1921-6-19 2450 Los Angeles Crystal Lake, San Gabriel Mts. 1677 Comment
  RSA0004201  Malvastrum gabrielense F. W. Peirson 1921-7-1 774 Los Angeles Arraster Creek, San Gabriel Mts 1067 Comment
  RSA0017015  Quercus kelloggii F. W. Peirson 1919-6-14 1708 Los Angeles Rock Creek, north slope of San Gabriel Mountains. 1982 Comment
  RSA0062944  Heuchera elegans F. W. Peirson 1928-6-2 7935 Los Angeles Trail up south fork of Rock Creek, north face of San Gabriel Mts. 1905 Comment
  RSA0066074  Allium monticola F. W. Peirson 1923-5-25 3547 Los Angeles Rock Creek, north slope of San Gabriel Mts. 1295 Comment
  RSA0076269  Orobanche multicaulis Frank W. Peirson 1926-5-8 6728 Los Angeles 12 miles east of Palmdale, Antelope Valley. Comment
  RSA0078633  Orobanche californica subsp. feudgei F. W. Peirson 1921-7-3 2489 Los Angeles South of Swartout Valley, north side of San Gabriel Mts. 2255 Comment
  RSA0098582  Spergularia villosa F. W. Peirson 1923-4-8 3449 Los Angeles San Clemente Island, back from Wilsons Cove. Comment
  RSA0117385  Collinsia parryi F. W. Peirson 1920-5-28 4491 Los Angeles San Antonio Canyon, San Gabriel Mountains. 1524 Comment
  RSA0126321  Nemacladus longiflorus var. longiflorus F. W. Peirson 1921-6-21 2453 Los Angeles West Fork of San Gabriel River. 610 Comment
  RSA0128610  Arabis repanda var. repanda F. W. Peirson 1921-6-16 2498 Los Angeles North slope of Mt. Waterman, San Gabriel Mts. 1981 Comment
  RSA65369  Pterostegia drymarioides F. W. Peirson 1925-4-23 5790 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA65492  Spergula arvensis F. W. Peirson 1923-3-18 5322 Los Angeles field, San Gabriel Blvd at olf Eucalyptus road, San Gabriel Valley Comment
  RSA65516  Sagina decumbens subsp. occidentalis F. W. Peirson 1923-3-18 3353 Los Angeles field, San Gabriel Blvd at olf Eucalyptus road, San Gabriel Valley Comment
  RSA65559  Polycarpon tetraphyllum F. W. Peirson 1945-6-15 s.n. Los Angeles Parking space at Anoakia School, Foothill Blvd. Arcadia or south of Sierra Madre. Comment
  RSA65744  Mollugo verticillata F. W. Peirson 1951-8-18 1855 Los Angeles Long Beach Park, Long Beach Comment
  RSA65808  Thlaspi arvense F. W. Peirson 1919-2-23 66 Los Angeles Henniger s Falt, San Gabriel Mts 854 Comment
  RSA65824  Sisymbrium officinale F. W. Peirson 1920-4-25 2109 Los Angeles Arroyo Seco, west of Pasadena 411 Comment
  RSA65897  Centrostegia thurberi F. W. Peirson 1918-6-18 27 Los Angeles Lower Rock Creek, north base of San Gabriel Mountains. 1280 Comment
  RSA65920  Rumex conglomeratus F. W. Peirson s.n. Los Angeles Arroyo Seco Canyon, San Gabriel Mts. Comment
  RSA66033  Eriogonum gracile var. gracile F. W. Peirson 1928-9-4 8184 Los Angeles East of Palmdale. Comment
  RSA66085  Tropidocarpum gracile F. W. Peirson 1903-2-24 1902 Los Angeles Eagle Rock Valley Comment
  RSA66114  Cardamine californica var. integrifolia F. W. Peirson 1911 Los Angeles Arroyo Seco, Pasadena Comment
  RSA66174  Draba cuneifolia var. integrifolia F. W. Peirson 650 Los Angeles Sycamore Canyon, San Rafael Hills. Comment
  RSA66259  Dicentra chrysantha F. W. Peirson 1918-7-7 56 Los Angeles San Antonio Canyon Comment
  RSA66309  Stylomecon heterophylla F. W. Peirson 1923-4-9 3445 Los Angeles San Clemente Island: 5 miles SE of Wilson's Cove Comment
  RSA66483  Eriogonum brachyanthum F. W. Peirson 1928-9-4 8185 Los Angeles East of Palmdale. Comment
  RSA66504  Arabis glabra F. W. Peirson 1919-4-9 390 Los Angeles Rubio Canyon. 549 Comment
  RSA66754A  Caulanthus heterophyllus var. heterophyllus F. W. Peirson 1921-4-3 5333 Los Angeles Pacoima canyon, Western San Gabriel Mts. 488 Comment
  RSA66754B  Guillenia lasiophylla F. W. Peirson 1921-4-3 5333 Los Angeles Pacoima canyon, Western San Gabriel Mts. 488 Comment
  RSA66756  Caulanthus heterophyllus var. heterophyllus F. W. Peirson 1925-4-23 5786 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA69000  Samolus parviflorus F. W. Peirson 1918-08 s.n. Los Angeles San Fernando Valley, Los Angeles River. Comment
  RSA69498  Mirabilis laevis var. crassifolia F. W. Peirson 1919-1-25 307 Los Angeles Arroyo Seco. 381 Comment
  RSA69593  Triglochin maritima F. W. Peirson 1918-08 1542 Los Angeles Long Beach Comment
  RSA69629  Juncus patens F. W. Peirson 1923-4-10 3416 Los Angeles San Clemente Island: canyon running south from summit. Comment
  RSA69861  Juncus torreyi F. W. Peirson 1928-9-4 8186 Los Angeles about 1 mile above Pallett Creek Comment
  RSA70196  Allium fimbriatum var. fimbriatum F. W. Peirson 1926-4-26 6661 Los Angeles 5 miles west of Rock Creek, Mohave Desert. Comment
  RSA70312  Juncus xiphioides F. W. Peirson 1928-9-4 8187 Los Angeles wet bank of irrigation ditch; Rock Creek about 1 mile above Pallett Creek Comment
  RSA70400  Chamaesyce serpillifolia subsp. serpillifolia F. W. Peirson 1924-9-1 5171 Los Angeles Arrastre Flat. 2271 Comment
  RSA71120  Calystegia occidentalis subsp. fulcrata F. W. Peirson 1919-6-14 497 Los Angeles Rock Creek. 1905 Comment
  RSA71901  Gilia capitata subsp. abrotanifolia F. W. Peirson 1903-3-28 916 Los Angeles Benedict's Canyon, Santa Monica Mountains. Comment
  RSA72325  Gilia minor F. W. Peirson 1926-4-26 6657 Los Angeles about 1 mile east of Palmdale. 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
  RSA73079  Leptosiphon liniflorus F. W. Peirson 1919-6-7 456 Los Angeles Divide between Cow Canyon and San Antonio canyon. 1372 Comment
  RSA73331  Clarkia epilobioides F. W. Peirson 1921-4-21 47025 Los Angeles Trail to Sycamore Flat, San Gabriel Mountains. 530 Comment
  RSA74150  Phacelia tanacetifolia F. W. Peirson 1919-3-30 311 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains. 457 Comment
  RSA74159  Phacelia tanacetifolia F. W. Peirson 1932-4-17 9855 Los Angeles Margin of Lovejoy Dam, Lovejoy Buttes, SW Mojave Desert. 762 Comment
  RSA74489  Phacelia grandiflora F. W. Peirson 1925-4-23 5809 Los Angeles San Gabriel River 305 Comment
  RSA74501  Phacelia minor F. W. Peirson 1923-5-4 3488 Los Angeles Foot of canyon, Arroyo Seco near Pasadena 381 Comment
  RSA74984  Phacelia distans F. W. Peirson 1921-6-19 2825 Los Angeles North Fork of San Gabriel River. 1006 Comment
  RSA75384  Camissonia strigulosa F. W. Peirson 1951-5-13 344 Los Angeles Arroyo Seco, Pasadena. Comment
  RSA75530  Phacelia fremontii F. W. Peirson 1933-5-13 10663 Los Angeles About 10 miles south of Munroc, Western Mojave Desert. Comment
  RSA75532  Phacelia fremontii F. W. Peirson 1928-6-2 7947 Los Angeles Open clearing, south fork of Rock Creek, San Gabriel Range 1463 Comment
  RSA75867  Nemophila menziesii var. integrifolia F. W. Peirson 1920-5-1 166 Los Angeles Idle Hour Camp, Eaton Canyon. 732 Comment
  RSA75984  Eucrypta chrysanthemifolia F. W. Peirson 1930-5-30 8902 Los Angeles Mint Canyon 610 Comment
  RSA77066  Loeseliastrum matthewsii F. W. Peirson 1930-5-31 8910 Los Angeles Below Lovejoy Dam, Lovejoy Buttes, southwestern Mojave Desert. Comment
  RSA77179  Malvella leprosa F. W. Peirson 1951-8-18 2301 Los Angeles east of Long Beach Comment
  RSA77809  Pholisma arenarium F. W. Peirson 1904-8-22 1177 Los Angeles Playa del Rey, coast of Los Angeles Co. Comment
  RSA79568  Cryptantha intermedia F. W. Peirson 1919-2-12 320 Los Angeles Hills west of Arroyo Seco, near Pasadena 427 Comment
  RSA80135  Mimulus guttatus F. W. Peirson 1904-8-28 1128 Los Angeles Little Santa Anita Canyon, San Gabriel Mountains. Comment
  RSA80170  Collinsia heterophylla F. W. Peirson 1921-6-21 4492 Los Angeles west fork of San Gabriel River 762 Comment
  RSA80188  Antirrhinum coulterianum F. W. Peirson 1925-4-23 5788 Los Angeles Forks of San Gabriel River. 534 Comment
  RSA80191  Plagiobothrys canescens F. W. Peirson 1918-4-28 2735 Los Angeles Turnbull Canyon near Whittier, Puente Hills. Comment
  RSA80237  Orthocarpus purpurascens var. ornatus F. W. Peirson 1932-4-17 9852 Los Angeles Below the Lovejoy Dam, Lovejoy Buttes, Mojave Desert. 762 Comment
  RSA80370  Solanum umbelliferum F. W. Peirson 185 Los Angeles Sink at Inglewood. Comment
  RSA80647  Boisduvalia glabella F. W. Peirson 1906-7-19 2083 Los Angeles Sink near Inglewood. Comment
  RSA80766  Petunia parviflora F. W. Peirson 1092 Los Angeles Los Angeles River, Inglewood. Comment
  RSA80831  Pedicularis densiflora F. W. Peirson 1168 Los Angeles Franklyn Canyon. Comment
  RSA82196  Trichostema lanceolatum F. W. Peirson 1919-11-16 1041 Los Angeles field west of Hollister Ave. Altadena. 381 Comment
  RSA82526  Verbascum virgatum F. W. Peirson 1919-11-16 1097 Los Angeles East end of New York Ave., Altadena. Comment
  RSA84997  Dryopteris arguta F. W. Peirson 1906-7-24 s.n. Los Angeles Verdugo Mountains Comment
  RSA85047  Polypodium californicum F. W. Peirson 1919-11-30 2838 Los Angeles South base of San Gabriel Mnts., Middle Eaton Canyon. 610 Comment
  RSA85311  Paeonia californica F. W. Peirson 1919-1-25 314 Los Angeles Foot of Arroyo Seco Canyon, Pasadena 381 Comment
  RSA85547  Cheilanthes covillei F. W. Peirson 1921-5-3 2404 Los Angeles Bear Canyon Ridge west of Mt. Lowe 1219 Comment
  RSA86196  Cystopteris fragilis F. W. Peirson 1919-5-14 1523 Los Angeles west fork of Eaton Canyon, south base of San Gabriel Mts. 1066 Comment
  RSA88649  Carex barbarae F. W. Peirson 1920-5-8 2685 Los Angeles San Rafael Hills, west of Arroyo Seco. Comment
  RSA90151  Astragalus didymocarpus var. didymocarpus F. W. Peirson 1920-3-28 2102 Los Angeles Low hill at foot of Tujunga Canyon, west end of San Gabriel Mtns. 457 Comment
  RSA90185  Astragalus brauntonii F. W. Peirson 1917-5-1 592 Los Angeles Topanga Canyon, Santa Monica Mountains. Comment
  RSA90213  Astragalus trichopodus var. phoxus F. W. Peirson 1920-3-28 2099 Los Angeles Low hill at foot of Tujunga Canyon, west end of San Gabriel Mtns. 457 Comment
  RSA90269  Polypogon viridis F. W. Peirson 1918-6-16 1581 Los Angeles Rock Creek, north slope of San Gabriel Mountains 1448 Comment
  RSA90278  Lathyrus vestitus var. vestitus F. W. Peirson 1919-3-11 104 Los Angeles first canyon east of Rubio Canyon 549 Comment
  RSA90280  Lathyrus vestitus var. vestitus F. W. Peirson 1920-5-16 2137 Los Angeles Tujunga Canyon, west end of San Gabriel Mountains. 473 Comment
  RSA90351  Lotus crassifolius var. crassifolius F. W. Peirson 1919-5-18 103 Los Angeles divide between fish canyon and Monrovia canyons 976 Comment
  RSA90383  Lotus strigosus F. W. Peirson 1919-3-27 351 Los Angeles Arroyo Seco, near Pasadena 396 Comment
  RSA90385  Lotus strigosus F. W. Peirson 1919-2-12 97 Los Angeles Field near foot of Lukens Trail, San Gabriel Mountains. 610 Comment
  RSA90391  Lotus strigosus F. W. Peirson 1920-5-9 4693 Los Angeles east trail to Mt. Lowe 1341 Comment
  RSA90414  Lotus oblongifolius var. oblongifolius F. W. Peirson 1921-7-2 4080 Los Angeles Pallett Creek, San Gabriel Mountains 1098 Comment
  RSA90858  Carex triquetra F. W. Peirson 1918-6-4 1635 Los Angeles Foothills east of Rubio Canyon 609 Comment
  RSA90904  Chrysothamnus nauseosus subsp. bernardinus F. W. Peirson 1918-9-7 226 Los Angeles Trail along west slope of Mt. Markham 1615 Comment
  RSA90912  Chrysothamnus nauseosus subsp. mohavensis F. W. Peirson 1928-9-5 8192 Los Angeles road from Rock Creek to Big Pines 1280 Comment
  RSA90956  Erigeron divergens F. W. Peirson 1921-7-16 2500 Los Angeles Prairie Fork of the San Gabriel River 1555 Comment
  RSA91034  Erigeron foliosus F. W. Peirson 1903-1 1288 Los Angeles Elysian Park, Los Angeles, Southern California Comment
  RSA91130  Trifolium microcephalum F. W. Peirson 1919-5-18 5208 Los Angeles Monrovia Canyon, south base of San Gabriel Mts. 457 Comment
  RSA91149  Euthamia occidentalis F. W. Peirson 1921-9-21 2585 Los Angeles Los Angeles River near Tropico, San Fernando Valley. Comment
  RSA91233  Alnus rhombifolia F. W. Peirson 1919-1-5 301 Los Angeles Monrovia Canyon, San Gabriel Mountains 579 Comment
  RSA91283  Lessingia glandulifera var. glandulifera F. W. Peirson 1918-10-26 294 Los Angeles South base of San Gabriel Mountains, Big Dalton Canyon. 610 Comment
  RSA91285  Lessingia glandulifera var. glandulifera F. W. Peirson 1921-7-19 1260 Los Angeles At forks of Coldwater Canyon and Cattle Canyon, East Fork San Gabriel Canyon 793 Comment
  RSA91318  Lupinus excubitus var. hallii F. W. Peirson 1921-5-3 7722 Los Angeles ridge between Bear Canyon and Millard Canyon, San Gabriel Mts 1067 Comment
  RSA91322  Lupinus longifolius F. W. Peirson 1920-5-6 7724 Los Angeles Fish Canyon, S base of San Gabriel Mts 777 Comment
  RSA91362  Medicago polymorpha F. W. Peirson 1920-4-20 548 Los Angeles 1085 New York Drive, Altadena. Comment
  RSA91369  Bromus diandrus F. W. Peirson 1918-04 1559 Los Angeles Altadena. Comment
  RSA91592  Carex mesochorea F. W. Peirson 1929-5-10 8365 Los Angeles Altadena. Comment
  RSA91750  Pseudognaphalium biolettii F. W. Peirson 1919-1-26 304 Los Angeles Rubio Canyon, south base of San Gabriel Mt. 534 Comment
  RSA91824  Nassella cernua F. W. Peirson 1923-4-12 3419 Los Angeles Wilson's Cove, San Clemente Island Comment
  RSA92163  Schoenoplectus californicus F. W. Peirson 1918-4-28 1612 Los Angeles Road east and south of El Monte. 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
  RSA92323  Poa secunda var. secunda F. W. Peirson 1918-6-10 5367 Los Angeles Summit of San Gabriel Peak 1860 Comment
  RSA92379  Psilocarphus tenellus F. W. Peirson 1918-5-5 1303 Los Angeles Brents on the Malibu, Santa Monica Mountains. Comment
  RSA92396  Eriophyllum pringlei F. W. Peirson 1926-4-26 6656 Los Angeles about 1 mile east of Palmdale. Comment
  RSA92642  Salix lasiolepis F. W. Peirson 1921-4-3 9608 Los Angeles Pacoima Canyon, west end of San Gabriel Mountains 518 Comment
  RSA92660  Eriophyllum confertiflorum F. W. Peirson 1919-2-12 239 Los Angeles Foot of hills, west of Arroyo Seco near Pasadena 426 Comment
  RSA92702  Salix laevigata F. W. Peirson 1923-5-27 9609 Los Angeles Pallett Creek, north slope of San Gabriel Mountains 1098 Comment
  RSA92861  Chaenactis santolinoides F. W. Peirson 1928-6-2 7932 Los Angeles S fork of Rock Creek: trail toward the summit. 1982 Comment
  RSA92910  Madia elegans subsp. densifolia F. W. Peirson 1920-9-17 2712 Los Angeles San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA92988  Lasthenia coronaria F. W. Peirson 1927-5-7 7673 Los Angeles Arroyo Seco, above Teddy's 396 Comment
  RSA94116  Brickellia californica F. W. Peirson 1924-10-26 5262 Los Angeles Arroyo Seco below California Street bridge, Pasadena 198 Comment
  RSA94530  Artemisia californica F. W. Peirson 1918-10-16 245 Los Angeles Pacoima Canyon, west end of San Gabriel Mts. 534 Comment
  RSA94562  Senecio californicus F. W. Peirson 1919-3-30 347 Los Angeles Big Tujunga Canyon, west end of San Gabriel Mountains. 412 Comment
  RSA94631  Rigiopappus leptocladus F. W. Peirson 1922-6-3 3076 Los Angeles At Collins Ranch, north slope of Liebre Mts. 1143 Comment
  RSA94681  Packera ionophylla F. W. Peirson 1924-5-27 4641 Los Angeles north slope of Strawberry Peak, San Bernardino Mts. 1524 Comment
Read comments
Dec 19 2011
  RSA94905  Cirsium occidentale var. occidentale F. W. Peirson 1923-4-12 3482 Los Angeles Wilson's Cove, San Clemente Island. Comment
  RSA94957  Malacothrix clevelandii F. W. Peirson 1919-5-21 445 Los Angeles Arroyo Seco Canyon, near Pasadena 685 Comment
  RSA95032  Lepidospartum squamatum F. W. Peirson 1924-10-26 5266 Los Angeles Below California Street bridge, Arroyo Seco, Pasadena Comment
  RSA95047  Hemizonia parryi subsp. australis F. W. Peirson 1920-6-22 1352 Los Angeles Along Valley Boulevard at Bassett Comment
  RSA95116  Agoseris heterophylla var. heterophylla F. W. Peirson 1922-7-7 3189 Los Angeles Swartout Valley, Wright's Ranch. 1845 Comment
  RSA95281  Rhamnus tomentella subsp. cuspidata F. W. Peirson 1921-7-17 4308 Los Angeles Prairie Fork of San Gabriel River, San Gabriel Mountains. 2012 Comment
  RSA95308  Rhamnus crocea F. W. Peirson 1919-4-1 339 Los Angeles Arroyo Seco, west of Pasadena. Comment
  RSA95311  Rhamnus crocea F. W. Peirson 1923-3-3 5314 Los Angeles bottom of canyon of Arroyo Seco, Pasadena 366 Comment
  RSA97338  Lomatium nevadense var. parishii F. W. Peirson 1923-5-26 4459 Los Angeles Rock Creek Divide 2011 Comment
  RSA97377  Sanicula bipinnatifida F. W. Peirson s.n. Los Angeles hills near Shorb, Los Angeles Co. Comment
  RSA97402  Yabea microcarpa F. W. Peirson 1920-5-28 132 Los Angeles San Gabriel Mountains, San Antonia Canyon, Los Angeles and San Bernardino County lines 1341 Comment
  RSA99341  Sambucus mexicana F. W. Peirson 1921-7-21 8650 Los Angeles Arraster Creek, San Gabriel Mountains. 945 Comment
  SD87664  Silene verecunda subsp. platyota F. W. Peirson 1920-9-15 2284 Los Angeles North slope Baldy. 2820 Comment
  SEINET10461064  Nemacladus ramosissimus Frank W. Peirson 1918-6-4 Peirson 220 Los Angeles Foothills east of Rubio Canyon, San Gabriel Mountains 610 Comment
  SEINET10464383  Githopsis diffusa subsp. diffusa Frank W. Peirson 1921-6-13 Peirson 1208 Los Angeles San Gabriel Mountains; Big Santa Anita Trail, 1.5 miles below Sturdenvant's Camp 1067 Comment
  UC218118  Clarkia heterandra F. W. Peirson 1922-6-3 Los Angeles Liebre Mts. 1143 Comment
  CAS-BOT-BC82596  Arnica lanceolata subsp. prima Frank W. Peirson 1934-7-18 11260 Madera at the foot of Rainbow Falls, Middle Fork San Joaquin River 2164 Comment
  RSA72191  Epilobium ciliatum subsp. glandulosum F. W. Peirson 1914-8-15 767 Madera Devils Post Pile, Sierra Nevada 2317 Comment
  RSA77247  Hesperochiron pumilus F. W. Peirson 1914-08 983 Madera Devil s Post Pile, Sierra Nevada 2332 Comment
  POM175482  Sidalcea malviflora subsp. laciniata Mabel Peirson 1926-3-28 6528 Marin Marin County: Elk Valley 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
  RSA77581  Myosotis latifolia F. W. Peirson 1926-3-28 6538 Marin Elk Valley. Comment
  RSA87009  Pickeringia montana var. montana F. W. Peirson 1912-07 1998 Marin Mt. Tamalpais Comment
  POM175484  Hypericum concinnum Mabel Peirson 1926-5-31 2071 Marin Mt. Tamalpais Comment
  RSA70273  Juncus effusus subsp. pacificus F. W. Peirson 1925-10-3 6454 Marin On north slope of Mt. Tamalpais. Comment
  RSA79470  Collinsia sparsiflora var. collina F. W. Peirson, Mabel B. Peirson 1926-4-1 6543 Marin 4 miles north of Ignacio. Comment
  RSA85293  Ranunculus muricatus Mabel Peirson 1926-3-28 6534 Marin Tennessee Cove. Comment
  RSA90325  Lotus humistratus F. W. Peirson 1912-07 2004 Marin Mt. Tamalpais. Comment
  PASA2779  Lupinus breweri F. W. Peirson 1921-7-3 Y 73 Mariposa Little Yosemite Comment
  PASA2865  Ribes montigenum F. W. Peirson 1921-7-8 Y 93 Mariposa Ten Lakes Comment
  PASA2868  Lupinus covillei F. W. Peirson 1921-7-8 Y 91 Mariposa Ten Lakes Comment
  PASA340  Scorzonella nutans Frank W. Peirson 1927-8-6 Mariposa Porcupine Flat 2438 Comment
  RSA74830  Phacelia hydrophylloides F. W. Peirson 1927-8-5 7641 Mariposa Murphy Creek, Lakke Tenaya, Sierra Nevada. 2515 Comment
  RSA80474  Mimulus laciniatus Gertrude Peirson 1914-07 1132 Mariposa Lake Tenaya Comment
  RSA83386  Monardella odoratissima subsp. pallida F. W. Peirson 1927-8-6 7659 Mariposa Porcupine Flat 2439 Comment
  PASA2756  Collinsia torreyi F. W. Peirson 1921-6-25 Y 4 Mariposa Near entrance of Little Yosemite, along Merced River Comment
  PASA2763  Collinsia torreyi F. W. Peirson 1921-6-27 Y 18 Mariposa Yosemite Valley, below Sentinal Rock Comment
  PASA2765  Panicum pacificum F. W. Peirson 1921-6-27 Y 14 Mariposa below Sentinal Rock east of Merced River Comment
  PASA2772  Gilia ciliata F. W. Peirson 1924-7-2 Y 66 Mariposa trail to Lake Washburn Comment
  PASA2804  Orobanche uniflora F. W. Peirson 1921-7-9 Y 104 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
  PASA2843  Veronica serpyllifolia F. W. Peirson 1921-7-1 Y 40 Mariposa above Lake Merced Comment
  PASA2845  Thalictrum fendleri F. W. Peirson 1921-7-1 Y 42 Mariposa above Lake Merced Comment
  PASA2848  Viola purpurea F. W. Peirson 1921-7-1 Y 45 Mariposa above Merced Lake Comment
  PASA2863  Penstemon confertus F. W. Peirson 1921-7-8 Y 95 Mariposa ""Dream Lake"", Ten Lakes Comment
  PASA2872  Sedum roseum F. W. Peirson 1921-7-7 Y 86 Mariposa Ten Lakes Comment
  PASA2879  Cassiope mertensiana F. W. Peirson and A. M. Shaffer 1921-7-8 Y 98 Mariposa high ridge above Ten Lakes Comment
  POM20560  Veronica scutellata F. W. Peirson 1923-7-7 s.n. Mariposa Navarro River. Comment
  RSA100338  Heterocodon rariflorum F. W. Peirson 1930-8-17 9242 Mariposa Meadow opposite Glacier Point, floor of Yosemite Valley, Yosemite National Park 1220 Comment
  RSA85032  Pellaea bridgesii F. W. Peirson 1927-8-5 7649 Mariposa Partial shade, Murphy Creek, Lake Tenaya Region 2485 Comment
  RSA87414  Lupinus latifolius subsp. longipes F. W. Peirson 1930-8-15 9227 Mariposa Murphy Creek, Lake Tenaya region, Yosemite National Park. 2500 Comment
  RSA88675  Carex lenticularis var. lipocarpa F. W. Peirson 1930-8-15 9225 Mariposa In Murphy Creek, Lake Tenaya area, Sierra Nevada. 2515 Comment
  RSA91744  Muhlenbergia montana F. W. Peirson 1935-7-19 11535 Mariposa Glaciated region north of Lake Tenaya, Sierra Nevada. 2500 Comment
  RSA91850  Danthonia californica var. americana F. W. Peirson 1930-8-16 9235 Mariposa in canyon below Lake Tenaya 2470 Comment
  CAS-BOT-BC213145  Sidalcea calycosa subsp. rhizomata Frank W. Peirson 1923-7-7 3773 Mendocino About 1 mile north of the Navarro River on coast. Comment
  CAS-BOT-BC82461  Arnica discoidea Frank W. Peirson 1923-7-7 3921 Mendocino 2 miles east of Mendocino City Comment
  HSC2960  Allium dichlamydeum F. W. Peirson 1925-8-10 6398 Mendocino Jug Handle Creek, 6 miles N of Mendocino City Comment
  POM259426  Gastridium phleoides F. W. Peirson 1932-7-6 10869 Mendocino Navarro River. Dimmick Memorial Park. Comment
  POM87057  Corethrogyne californica var. obovata F. W. Peirson 1925-8-10 6416 Mendocino 1 mile S of Albion Comment
  RSA66704  Streptanthus barbiger F. W. Peirson 1923-7-7 3732 Mendocino 3 miles above Boonville Comment
Read comments
Aug 14 2013
  RSA68748  Armeria maritima subsp. californica F. W. Peirson 1925-8-10 6386 Mendocino Jug Handle Creek, 6 miles north of Mendocino City. Comment
  RSA77345  Ceanothus thyrsiflorus F. W. Peirson 1923-7-9 3770 Mendocino Top of grade 8 miles N of Westport Comment
  RSA80707  Hypericum androsaemum F. W. Peirson 1925-8-10 6378 Mendocino Jug Handle Creek, 6 miles north of Mendocino City Comment
  RSA85830  Cupressus goveniana F. W. Peirson 1923-7-7 3637 Mendocino 2 miles east of Mendocino City. Comment
  RSA87007  Myrica californica F. W. Peirson 1923-7-7 3703 Mendocino 2 miles east of Mendocino City. Comment
  UC501421  Phalaris californica Frank W. Peirson 1932-7-6 10257 Mendocino road from Westport Hale's Grove Auto Camp Comment
  UC501486  Polygala californica Frank W. Peirson 1923-7-7 3758 Mendocino 5 mi below Boonville Comment
  UC501630  Anaphalis margaritacea Frank W. Peirson 1925-8-9 6356 Mendocino 8 mi e, on Ukiah Road Mendocino Ciyt Comment
  CAS-BOT-BC427027  Lithophragma affine Frank W. Peirson 1926-4-2 4640 Mendocino Near foot of Hopland Grade Comment
  RSA0028464  Geranium molle F. W. Peirson 1923-7-8 3756 Mendocino Ten-Mile Creek. About 5 miles from the ocean. Comment
  RSA576932  Plectritis macrocera F. W. Peirson 1926-4-1 6562 Mendocino Hopland. Near Russian River. Comment
  RSA65113  Eriogonum latifolium F. W. Peirson 1925-8-10 6405 Mendocino Sea bluffs 5 miles south of Mendocino City Comment
  RSA65805  Lepidium didymum F. W. Peirson 1925-8-10 6411 Mendocino Grade down to the stream at Albion Comment
  RSA69675  Juncus bufonius var. bufonius F. W. Peirson 1923-7-8 4260 Mendocino At inlet of Jug Handle Creek, 5 miles north of Mendocino City. Comment
  RSA73353  Clarkia concinna subsp. concinna F. W. Peirson 1923-7-7 3790 Mendocino Cloverdale to Boonville, about 9 miles from the latter Comment
  RSA76021  Nemophila parviflora var. parviflora F. W. Peirson 1923-7-7 3816 Mendocino Navarro River. 8 miles below Wendling. Comment
  RSA85862  Blechnum spicant F. W. Peirson 1923-7-7 3631 Mendocino 2 miles east of Mendocino City. Comment
  RSA90287  Lathyrus vestitus subsp. bolanderi F. W. Peirson 1923-7-9 3626 Mendocino Near top of grade north of Westport. Comment
  RSA90317  Lotus aboriginus F. W. Peirson 1923-7-7 4074 Mendocino 2 miles east of Mendocino City Comment
  RSA90409  Lotus oblongifolius var. nevadensis F. W. Peirson 1923-7-7 4073 Mendocino 2 miles east of Mendocino City. Comment
  RSA91703  Gnaphalium palustre F. W. Peirson 1923-7-6 4233 Mendocino Indian Creek, southern Mendocino Co. Comment
  RSA92000  Polypogon interruptus F. W. Peirson 1932-7-6 10869 Mendocino Navarro River. Dimmick Memorial Park. Comment
  RSA92363  Anaphalis margaritacea F. W. Peirson 1925-8-9 6356 Mendocino Coast Range 8 miles east of Mendocino City, on road to Ukiah. Comment
  RSA92678  Eriophyllum lanatum var. arachnoideum F. W. Peirson 1923-7-7 3911 Mendocino 5 miles west of Boonville. Comment
  RSA94390  Madia gracilis subsp. gracilis F. W. Peirson 1923-7-6 4151 Mendocino Indian Creek, southern Mendocino Co. Comment
  RSA94827  Cnicus benedictus F. W. Peirson 1923-7-7 3931 Mendocino Field borders, Indian Creek 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
  RSA95171  Hieracium albiflorum F. W. Peirson 1923-7-9 3938 Mendocino Summit of first grade north of Westport. Comment
  RSA95253  Sidalcea malachroides F. W. Peirson 1923-7-9 3774 Mendocino Just north of Westport. Comment
  RSA98325  Oenanthe sarmentosa F. W. Peirson 1923-7-7 3941 Mendocino Navarro River within one mile of ocean Comment
  SD87791  Carex obnupta Frank W. Peirson 1925-8-10 Mendocino Jug Handle Creek; stream bottom lands; mostly in shade. Comment
  CAS-BOT-BC217171  Thalictrum fendleri Frank Warrington Peirson 1926-6-25 6877 Modoc Small side canyon 1 mi E of summit, Cedarville Road, Warner Mts. Comment
  RSA65656  Montia fontana F. W. Peirson 1926-6-25 6889 Modoc 1 mile east of summit of Cedarville Road, Warner Mountains Comment
  RSA65696  Silene douglasii var. douglasii F. W. Peirson 1926-6-25 6898 Modoc Small side canyon 1 mile east of summit of Warner Mountains on Cedarville Road. Comment
  RSA70026  Sarcobatus vermiculatus F. W. Peirson 1926-6-26 6901 Modoc between Alturas and Canby Comment
  RSA70206  Allium acuminatum F. W. Peirson 1926-6-25 6874 Modoc Summit of grade, Cedarville Pass, Warner Mountains. Comment
  RSA75376  Camissonia andina F. W. Peirson 1926-6-25 6869 Modoc Cedarville Pass, Warner Mountains. Comment
  RSA83374  Monardella odoratissima subsp. glauca F. W. Peirson 1926-6-25 6897 Modoc Small side canyon 1 mile east of summit on road to Cedarville, across the Warner Mts. Comment
  RSA85818  Potentilla biennis F. W. Peirson 1926-6-25 6881 Modoc Small side canyon 1 mile east of summit of Warner Mountains, on Cedarville Road Comment
  POM98592  Sidalcea oregana subsp. oregana F. W. Peirson 1926-6-25 6867 Modoc Cedarville Road, Warner Mts. Comment
  POM98604  Hydrophyllum capitatum var. alpinum F. W. Peirson 1926-6-25 6875 Modoc Cedarville Road, Warner Mountains. Comment
  RSA0012468  Senecio serra var. serra F. W. Peirson 1926-6-25 6882 Modoc 1 mile east of summit of Warner Mts. on Cedarville Road. Comment
  RSA85295  Ranunculus sceleratus var. multifidus F. W. Peirson 1926-6-26 6904 Modoc Alturas to Canby Comment
  RSA90968  Erigeron pumilus var. intermedius F. W. Peirson 1926-6-25 6885 Modoc 1 mile east of summit, Cedarville Road, Warner Mountains Comment
  RSA97461  Osmorhiza occidentalis F. W. Peirson 1926-6-25 6886 Modoc Small side canyon 1 mile east of summit of Warner Mountains, on Cedarville Road Comment
  CAS-BOT-BC119113  Carex phaeocephala Frank Warrington Peirson 1935-8-4 11730 Mono Sonora Pass Region. Open terrain along the main range ca 1.5 mi S of Pass. 2804 Comment
  CAS-BOT-BC21134  Carex fissuricola F. W. Peirson 1937-7-30 13606 Mono Lundy. 2468 Comment
  CAS-BOT-BC21919  Carex heteroneura F. W. Peirson 1935-8-4 11733 Mono Sonora Pass Region. 2743 Comment
  CAS-BOT-BC224981  Plagiobothrys hispidulus Frank W. Peirson 1925-6-29 6160 Mono Cris Flat, W Fork Walker River Comment
  CAS-BOT-BC246531  Eriogonum elatum var. elatum Frank W. Peirson 1925-6-25 6055 Mono Rock Creek 2072 Comment
  CAS-BOT-BC251492  Castilleja lemmonii F. W. Peirson 1935-8-4 11658 Mono in large boggy meadow, along east slope of main range about 1.5 mi. south of Sonora Pass 2834 Comment
  CAS-BOT-BC272657  Eriogonum spergulinum var. reddingianum F. W. Peirson 1925-6-26 6108 Mono Silver Lake 2194 Comment
  HSC20052  Salix nivalis F. W. Peirson, Mabel Peirson 1934-7-13 11207 Mono Cirques above Virginia Lakes 3201 Comment
  JEPS16598  Anelsonia eurycarpa Frank W. Peirson 1934-7-13 11201 Mono in the cirque above Red Lake (Virginia Lakes Basin); Virginia Lakes Basin 3230 Comment
  JEPS36451  Crepis nana F. W. Peirson 1934-7-13 11202 Mono Red Lake Virginia Lakes Basin, Red Lake 3230 Comment
  JEPS40725  Dieteria canescens var. canescens F. W. Peirson 1934-7-16 11246 Mono Virginia Lake Resort 2987 Comment
  JEPS41101  Iva nevadensis Frank W. Peirson 1938-7-10 12463 Mono on the extensive alluvial cone directly below Devernois Ranch; w slope White Mountains 1432 Comment
  JEPS54764  Astragalus newberryi var. newberryi Frank W. Peirson 1938-7-8 12442 Mono near windmill (Hot Creek Region); Hot Creek Region 2133 Comment
  JEPS56727  Eriogonum microthecum var. ambiguum Frank W. Peirson 1934-7-8 11159 Mono Sherwin Hill 1950 Comment
  JEPS70801  Cryptantha humilis F. W. Peirson 1934-7-11 Mono Moat Lake Virginia Lakes Basin 3169 Comment
  POM175529  Thelypodium integrifolium subsp. complanatum F. W. Peirson 1930-8-12 9201 Mono N shore of Mono Lake. E of Sierra Nevada. 1966 Comment
  POM203727  Crepis acuminata F. W. Peirson 1934-7-14 s.n. Mono East of Blue Lake; Virginia Lakes Basin Comment
  POM203731  Galium hypotrichium subsp. hypotrichium F. W. Peirson 1934-7-16 s.n. Mono Virginia Lakes Basin. 2988 Comment
  POM203905  Silene bernardina F. W. Peirson 1934-7-14 11222 Mono East of Blue Lake, Virginia Lakes Basin. East slope of Sierra Nevada. 3018 Comment
  POM257996  Leymus triticoides F. W. Peirson 1937-8-1 s.n. Mono Long Valley; Plains in the Hot Creek Region 2104 Comment
  POM87147  Potentilla flabellifolia F. W. Peirson 1925-6-27 6123 Mono Rush Creek. 2896 Comment
  RSA100246  Valeriana capitata subsp. californica F. W. Peirson 1925-6-27 6111 Mono Trail on north side of Gem Lake, Sierra Nevada. 2774 Comment
  RSA468518  Linanthus pungens subsp. pulchriflorus F. W. Peirson 1925-6-25 6073 Mono [Lower] Rock Creek, Sierra Nevada. 2073 Comment
  RSA65362  Atriplex canescens F. W. Peirson 1930-8-12 9203 Mono N shore of Mono Lake. E of Sierra Nevada. 1966 Comment
  RSA65459  Atriplex canescens F. W. Peirson 1914-8-26 1810 Mono Volcanic tableland at head of Owens Valley. 1677 Comment
  RSA65844  Eriogonum microtheca var. laxiflorum F. W. Peirson 1927-7-25 7553 Mono Convict Lake, east slope of Sierra Nevada. 2317 Comment
  RSA65850  Eriogonum microtheca var. ambiguum F. W. Peirson 1914-8-25 1748 Mono Northern part of volcanic tableland. Crooked Creek. 2043 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
  RSA66512  Arabis platysperma var. howellii F. W. Peirson 1934-7-12 11332 Mono In pass at the head of Virginia Lakes Basin. 3384 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
  RSA66763  Arabis divaricarpa F. W. Peirson 1932-7-23 10380 Mono East side of Sonora Pass. 2591 Comment
  RSA66825  Thelypodium crispum F. W. Peirson 1925-6-27 6112 Mono Gem Lake, east slope of Sierra Nevada. 2774 Comment
  RSA67126  Galium hypotrichium subsp. hypotrichium F. W. Peirson 1934-7-16 11251 Mono Virginia Lakes Basin. 2988 Comment
  RSA70531  Calochortus bruneaunis Frank W. Peirson 1925-6-25 6075 Mono Rock Creek, Sierra Nevada 2073 Comment
  RSA70593  Iris missouriensis Frank W. Peirson 1934-7-12 11186 Mono Upper lake basin, Virginia Lakes, Sierra Nevada. 3201 Comment
  RSA71922  Loeseliastrum depressum F. W. Peirson 1938-7-10 12462 Mono Below the old Devernois Ranch, west slope of White Mountains. 1463 Comment
  RSA72002  Phlox diffusa subsp. subcarinata F. W. Peirson 1934-7-14 11213 Mono Dry slopes above Virginia Lakes, Sierra Nevada 3018 Comment
  RSA73065  Leptosiphon ciliatus F. W. Peirson 1925-6-28 6131 Mono Reverse Creek, Sierra Nevada. 2287 Comment
  RSA75415  Oenothera deltoides subsp. piperi F. W. Peirson 1925-6-29 6161 Mono Cris Flat. W fork of Walker River. Comment
  RSA78521  Carex exserta F. W. Peirson 1937-7-30 13608 Mono Lundy. 2470 Comment
  RSA79611  Cryptantha circumscissa var. hispida F. W. Peirson 1927-7-26 7557 Mono Volcanic Mountains between Deadman Creek and June Lake. 2439 Comment
  RSA79986  Castilleja nana F. W. Peirson 1935-7-18 11531 Mono Slate Creek. 3110 Comment
  RSA80409  Mimulus nanus var. mephiticus F. W. Peirson 1925-6-29 6156 Mono South of Bridgeport on road to Mono Lake. Comment
  RSA82267  Castilleja linariifolia F. W. Peirson 1925-6-26 6099 Mono Silver Lake. 2195 Comment
  RSA83946  Saxifraga tolmiei F. W. Peirson 1934-7-10 11167 Mono Below Cooney Lake, Virginia Lakes Basin. 3110 Comment
  RSA85226  Horkelia fusca subsp. parviflora F. W. Peirson 1925-6-27 6125 Mono Rush Creek. 2896 Comment
  RSA85308  Paeonia brownii F. W. Peirson 1932-7-23 10382 Mono East of Sonora Pass 2591 Comment
  RSA85560  Juniperus communis var. montana F. W. Peirson 1934-7-13 11198 Mono Slopes above the Virginia Lakes, east slope of Sierra Nevada 3079 Comment
  RSA85614  Potentilla pseudosericea F. W. Peirson 1934-7-13 11203 Mono In cirque above Red Lake, Virginia Lakes Basin, Sierra Nevada 3232 Comment
  RSA85686  Potentilla fruticosa F. W. Peirson 1925-6-27 6114 Mono Gem Lake. 2774 Comment
  RSA85762  Potentilla glandulosa var. nevadensis F. W. Peirson 1925-6-25 6063 Mono [Lower] Rock Creek. 2073 Comment
  RSA86622  Purshia tridentata var. tridentata F. W. Peirson 1925-6-27 6118 Mono W end of Gem Lake. Sierra Nevada. 2835 Comment
  RSA86629  Purshia tridentata var. tridentata F. W. Peirson 1925-6-25 6053 Mono Rock Creek 2073 Comment
  RSA86632  Geum canescens F. W. Peirson 1932-7-23 10383 Mono E slope of Sonora Pass, Sierra Nevada. 2591 Comment
  RSA87143  Tsuga mertensiana F. W. Peirson 1934-7-13 11199 Mono At the east end of Blue Lake, Virginia Lakes Basin. 3018 Comment
  RSA87409  Lupinus lyallii var. villosus F. W. Peirson 1932-7-23 10377 Mono East slope of Sonora Pass. 2591 Comment
  SD87553  Phacelia humilis Frank W. Peirson 1935-8-4 11661 Mono Sonora Pass Region, ca. 2.0 miles southeast of Pass. 2621 Comment
  SD87595  Lappula occidentalis Frank W. Peirson 1925-6-25 6048 Mono Rock Creek 2075 Comment
  SD87722  Potentilla glandulosa var. lactea Frank W. Peirson 1925-6-25 6063 Mono Rock Creek, Volcanic Tableland 2073 Comment
  SD87740  Ericameria nauseosa var. hololeuca Frank W. Peirson 1930-8-12 9206 Mono Mono Lake 1965 Comment
  SD87797  Phacelia humilis Frank W. Peirson 1925-6-25 6067 Mono Rock Creek, Volcanic Tableland 2073 Comment
  SD87864  Plagiobothrys hispidus Frank W. Peirson 1934-7-14 11217 Mono Virginia Lakes Basin. Dry hills east of Blue Lake. 3017 Comment
  UC483084  Salix jepsonii Frank W. Peirson 1932-7-22 10374 Mono along Robinson Creek below Barney Lake; Twin Lake Basin 2438 Comment
  UC501521  Zigadenus venenosus var. venenosus Frank W. Peirson 1932-7-22 Mono below Barney Lake (Twin Lake Canyon, grom Bridgeport) Comment
  UC511799  Chylismia claviformis subsp. lancifolia Frank W. Peirson 1933-7-29 10726 Mono Crooked Creek Canyon Owens River (on floor) 2042 Comment
  UC511876  Eriogonum heermannii var. humilius Frank W. Peirson 1933-7-28 10715 Mono Summit Sherwin HIll Sherwin HIll 1950 Comment
  UC511899  Monardella linoides subsp. sierrae Frank W. Peirson 1933-7-29 10727 Mono Crooked Creek Canyon Owens River 2042 Comment
  UC555518  Horkelia fusca subsp. parviflora Frank W. Peirson 1925-6-27 6125 Mono Rush Creek 2895 Comment
  UCR70854  Navarretia breweri F. W. Peirson 1925-6-29 6155 Mono Tableland north of Mono Lake 2287 Comment
  CAS-BOT-BC196548  Lupinus argenteus var. meionanthus Frank W. Peirson 1933-7-29 10750 Mono Owens River. Near Whisky Creek 2042 Comment
  CAS-BOT-BC223704  Mentzelia Frank W. Peirson 1927-6-26 7558 Mono Between Deadman Creek and June Lake 2438 Comment
  CAS-BOT-BC241642  Eriogonum baileyi var. baileyi F. W. Peirson 1914-8-26 s.n. Mono Volcanic Tableland 1981 Comment
  CAS-BOT-BC413300  Oxytheca dendroidea subsp. dendroidea Frank W. Peirson 1933-7-29 10732 Mono Slopes about Whiskey Creek. Owens River 2042 Comment
  JEPS41410  Erigeron aphanactis var. aphanactis Frank W. Peirson 1925-6-25 6031 Mono grade up volcanic tableland Round Valley Comment
  JEPS57109  Eriogonum ampullaceum Frank W. Peirson 1933-7-29 10740 Mono dry slopes about Whisky Creek; Owens River; Whisky Creek, Owens River, Mono Co. 2042 Comment
  JEPS69065  Eriastrum wilcoxii Frank W. Peirson 1933-7-31 10755 Mono n slope Mono Craters 2286 Comment
  PASA1303  Silene menziesii Frank W. Peirson 1927-7-27 Mono Silver Lake Comment
  POM203398  Arabis puberula F. W. Peirson 1934-7-10 11175 Mono Near Cooney Lake, Virginia Lakes Basin. 3140 Comment
  POM203898  Claytonia nevadensis F. W. Peirson 1934-7-15 11231 Mono Growing in the rocky bed of the stream flowing into Red Lake; 3171 Comment
  POM203903  Iris missouriensis Frank W. Peirson 1934-7-12 11189 Mono Virginia Lakes Basin, east slope of Sierra Nevada 3201 Comment
  RSA0006796  Astragalus lentiginosus var. ineptus F. W. Peirson 1933-7-29 10743 Mono Owens River, along Hilton Creek. 2043 Comment
  RSA0010939  Castilleja minor subsp. minor F. W. Peirson 1927-7-28 7576 Mono Near Mono Lake. At Mono Inn. 1959 Comment
  RSA0022024  Ribes montigenum F. W. Peirson 1937-7-30 12146 Mono Broken country above the falls, Mill Creek (Lundy Canyon). 2515 Comment
  RSA0025854  Abronia turbinata F. W. Peirson 1938-7-9 12443 Mono Along east base of Mono Craters. 2134 Comment
  RSA0036075  Cassiope mertensiana Frank W. Peirson 1925-6-27 6126 Mono Rush Creek 2926 Comment
  RSA0041897  Stellaria longipes subsp. longipes F. W. Peirson 1925-6-28 6133 Mono Reverse Creek, Silver Lake region. 2195 Comment
  RSA0074839  Sedum obtusatum F. W. Peirson 1927-7-29 7586 Mono Slate (Saddleback) Creek, Sierra Nevada. 3018 Comment
  RSA0125866  Anelsonia eurycarpa F. W. Peirson 1934-7-15 11201 Mono Virginia Lakes Basin. 3232 Comment
  RSA112105  Astragalus lentiginosus var. ineptus F. W. Peirson 1933-7-31 10758 Mono North shore Mono Lake. 1966 Comment
  RSA65180  Eriogonum elatum var. elatum F. W. Peirson 1932-7-22 10362 Mono Steep slope along Robinson Creek below Barney Lake (Twin Lake Basin) 2378 Comment
  RSA65233  Eriogonum ampullaceum F. W. Peirson 1937-8-1 12155 Mono Long Valley, Hot Creek region. 2104 Comment
  RSA65940  Polygonum coccineum F. W. Peirson 1914-8-25 s.n. Mono Volcanic Tableland, Crooked Creek, Owens Valley 2043 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
  RSA66828  Thelypodium crispum F. W. Peirson 1934-7-13 11200 Mono Shores of Virginia Lake, Virginia Lakes Basin 2988 Comment
  RSA69702  Mentzelia congesta F. W. Peirson 1934-7-16 11248 Mono Virginia Lakes Basin. 2988 Comment
  RSA70595  Iris missouriensis Frank W. Peirson 1910-7-20 1691 Mono Meadows north of Silver Lake, Sierra Nevada 2195 Comment
  RSA71942  Collomia linearis F. W. Peirson 1933-7-29 10742 Mono Along Hilton Creek, Owens River. 2043 Comment
  RSA72254  Camissonia claviformis subsp. lancifolia F. W. Peirson 1938-7-9 12452 Mono 1.5 miles southwest of Benton 1921 Comment
  RSA72639  Wyethia mollis F. W. Peirson 1925-6-26 6089 Mono Northern part of Volcanic Tableland. Comment
  RSA74494  Phacelia humilis var. humilis F. W. Peirson 1925-6-25 6067 Mono [Lower] Rock Creek, Sierra Nevada. 2073 Comment
  RSA75695  Camissonia heterochroma F. W. Peirson 1934-7-8 11160 Mono Sherwin Hill 1951 Comment
  RSA766403  Eriogonum brachyanthum F. W. Peirson 1925-6-25 6040 Mono Grade up volcanic Tableland north of Bishop. Comment
  RSA82247  Castilleja miniata F. W. Peirson 1927-7-27 7467 Mono West of north end of Silver Lake. 2226 Comment
  RSA82260  Castilleja linariifolia F. W. Peirson 1932-7-22 10376 Mono Along Robinson Creek below Barney Lake, Twin Lake Basin south of Bridgeport. 2378 Comment
  RSA85039  Pellaea breweri F. W. Peirson 1925-6-27 6128 Mono Rush Creek, Sierra Nevada 2287 Comment
  RSA85754  Potentilla flabellifolia F. W. Peirson 1934-7-15 11230 Mono Along the Red Lake Stream, Virginia Lakes Basin. 3171 Comment
  RSA87230  Lupinus lyallii var. lyallii F. W. Peirson 1934-7-12 11189 Mono Virginia Lakes Basin, east slope of Sierra Nevada. 3201 Comment
  RSA88774  Carex exserta F. W. Peirson 1935-7-18 11706 Mono Just below the Carnegie Alpine Laboratory, Slate Creek. 3049 Comment
  RSA90191  Astragalus casei F. W. Peirson 1930-8-12 9188 Mono Just back of willows on shore of Mono Lake. 1966 Comment
  RSA90237  Astragalus curvicarpus F. W. Peirson 1925-6-29 6153 Mono North slope of grade north of Mono Lake. 2287 Comment
  RSA90254  Astragalus lentiginosus var. ineptus F. W. Peirson 1935-8-4 11648 Mono About 1.6 miles south of Sonora Pass. 2744 Comment
  RSA90441  Astragalus kentrophyta var. danaus F. W. Peirson 1934-7-12 11191 Mono In pass at the head of upper Virginia Lakes Basin 3383 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
  RSA90866  Carex leporinella F. W. Peirson 1934-7-15 11227 Mono Cirque above Red Lake, Virginia Lakes Basin 3232 Comment
  RSA90925  Erigeron compositus F. W. Peirson 1934-7-13 11205 Mono Stream flowing into Red Lake, Virginia Lakes Basin 3171 Comment
  RSA90972  Erigeron coulteri F. W. Peirson 1935-8-4 11653 Mono 2 miles SE of Sonora Pass. 2622 Comment
  RSA90988  Trifolium wormskioldii F. W. Peirson 1925-6-25 6050 Mono [Lower] Rock Creek, Sierra Nevada. 2073 Comment
  RSA91238  Vicia villosa F. W. Peirson 1927-7-28 7582 Mono Near Mono Lake. At Mono Inn. 1959 Comment
  RSA91459  Trifolium cyathiferum F. W. Peirson 1932-7-22 10365 Mono Meadows along Robinson Creek, Twin Lake Basin 2287 Comment
  RSA92123  Carex nebrascensis F. W. Peirson 1925-6-25 6082 Mono Rock Creek, Sierra Nevada. 2073 Comment
  RSA92125  Carex nebrascensis F. W. Peirson 1934-7-8 11165 Mono At foot of Whisky Creek, Owens River. 2043 Comment
  RSA92613  Salix arctica F. W. Peirson 1910-7-26 718 Mono Mt. Dana. Sierra Nevada. Mono Co-Tuolumne Co divide. Comment
  RSA92836  Madia elegans subsp. wheeleri F. W. Peirson 1914-8-25 1344 Mono Upper part of Volcanic Tableland, Crooked Creek, upper Owens River. Comment
  RSA93435  Brickellia oblongifolia var. linifolia F. W. Peirson 1925-6-30 6166 Mono West fork of Walker River below Cris Flat. Comment
  RSA93657  Antennaria rosea F. W. Peirson 1925-6-28 6130 Mono Reverse Creek, Sierra Nevada 2256 Comment
  RSA93664  Solidago spectabilis F. W. Peirson 1930-8-12 9192 Mono Mono Lake 1966 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
  RSA94655  Senecio subnudus F. W. Peirson 1934-7-10 11177 Mono Along trail between Blue and Cooney Lakes, Virginia Lakes Basin. 3110 Comment
  RSA94747  Senecio canus F. W. Peirson 1934-7-16 11256 Mono Near Blue Lake, Virginia Lakes Basin. 3018 Comment
  RSA94847  Arnica nevadensis F. W. Peirson 1934-7-16 11241 Mono Open south shore of Blue Lake, Virginia Lakes Basin. 3018 Comment
  RSA94854  Arnica longifolia subsp. myriadenia F. W. Peirson 1934-7-16 11240 Mono Above Blue Lake. Virginia Lakes Basin. 3034 Comment
  RSA94952  Tetradymia canescens F. W. Peirson 1930-8-12 9189 Mono Shore of Mono Lake. 1966 Comment
  RSA94971  Tetradymia canescens F. W. Peirson 1937-8-1 12161 Mono Long Valley, Hot Creek region. 2104 Comment
  RSA94990  Agoseris parviflora F. W. Peirson 1925-6-26 6096 Mono North of Deadman Creek (Near Mammoth) 2439 Comment
  RSA95108  Crepis acuminata F. W. Peirson 1937-7-30 12142 Mono Mill Creek (Lundy Canyon) 2470 Comment
  RSA95190  Arnica diversifolia F. W. Peirson 1937-7-30 12149 Mono Above the falls, Mill Creek, Lundy Canyon 2530 Comment
  RSA97335  Pastinaca sativa F. W. Peirson 1930-8-12 9184 Mono Mono Lake 1966 Comment
  RSA97388  Cicuta douglasii F. W. Peirson 1930-8-12 9181 Mono Mono Lake, back of lake shore 1966 Comment
  RSA98356  Berula erecta F. W. Peirson 1930-8-12 9185 Mono Mono Lake, back of lake shore 1966 Comment
  SD87628  Wyethia mollis Frank W. Peirson 1925-6-26 6089 Mono Northern part of Volcanic Tableland Comment
  UC599224  Tetradymia glabrata Frank W. Peirson 1938-7-9 12448 Mono 19 mi nw Benton 2164 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
  UC638460  Ivesia saxosa Frank W. Peirson 1934-7-8 Mono Summit of Sherwin Hill 1950 Comment
  CAS-BOT-BC64554  Armeria maritima subsp. californica Frank W. Peirson 1923-6-27 3804 Monterey Monterey. Comment
  RSA445286  Satureja douglasii F. W. Peirson 1923-6-27 3827 Monterey Seventeen Mile Drive. Monterey. Comment
  RSA68958  Plantago maritima F. W. Peirson 1923-7-27 3856 Monterey near Pacific Grove, low sea bluffs Comment
  RSA77165  Ceanothus leucodermis F. W. Peirson 1937-7-19 12088 Monterey along trail up the Big Sur River 305 Comment
  RSA83438  Satureja douglasii F. W. Peirson 1923-6-27 3827 Monterey Seventeen Mile Drive. Monterey. Comment
  RSA84359  Boykinia occidentalis F. W. Peirson 1937-7-19 12086 Monterey Big Sur River. Comment
  UC570746  Acanthomintha lanceolata Frank W. Peirson 1925-3-24 5646 Monterey Coalinga to Parksfield; Inner Coast Ranges 990 Comment
Read comments
Aug 3 2015
  CAS-BOT-BC367561  Lasthenia minor Frank W. Peirson 1923-6-27 3916 Monterey Notrey's Landing, Coast, south of Carmel Comment
  PASA2216  Eriophyllum staechadifolium Frank W. Peirson 1923-6-27 Monterey Coast south of Pacific Grove [sea level] Comment
  RSA70239  Allium crispum F. W. Peirson 1925-3-24 5656 Monterey Grade south of summit on road from Coalinga to Parkfield, Inner Coast Ranges. 762 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
  RSA82988  Stachys bullata F. W. Peirson 1936-7-13 11830 Monterey Nacimiento Creek (branch of San Antonio River). 518 Comment
  RSA91757  Gnaphalium californicum F. W. Peirson 1937-7-19 12095 Monterey Trail up the Big Sur River Comment
  RSA85822  Cupressus sargentii F. W. Peirson, Mabel Peirson 1926-4-3 6623 Napa Northern edge of Napa County on Middletown Road Comment
  RSA80689  Boisduvalia densiflora var. densiflora F. W. Peirson 1928-7-4 7952 Napa Summit of Mt. Helena Grade Comment
  RSA69453  Juncus ensifolius F. W. Peirson 1931-8-10 9568 Nevada Near west end 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
  RSA95255  Sidalcea glaucescens F. W. Peirson 1931-8-10 9565 Nevada Open flat at west end of Donner Lake, Sierra Nevada. Comment
  RSA9573  Sidalcea glaucescens F. W. Peirson 1931-8-10 9573 Nevada In woods along banks of Yuba River, Sierra Camp, 4 miles west of the summit of Donner Pass, 2058 Comment
  CAS-BOT-BC445607  Echinodorus berteroi Frank W. Peirson 1924-5-31 4650 Orange Laguna Canon [Canyon] Comment
  JEPS13141  Osmadenia tenella Frank W. Peirson 1922-5-18 1353 Orange Santa Ana Canyon 121 Comment
  JEPS47844  Calystegia sepium subsp. binghamiae Frank W. Peirson 1926-9-26 7086 Orange Wintersberg. Comment
  JEPS55289  Lathyrus vestitus var. alefeldii Frank W. Peirson 1925-4-10 Orange Silverado Canyon 457 Comment
  PASA1878  Lythrum californicum Frank W. Peirson 1924-8-29 Orange 4 miles south of Santa Ana Comment
  PASA432  Frankenia grandifolia var. campestris Frank W. Peirson 1924-5-31 Orange Laguna Canyon 91 Comment
  POM21634  Solanum americanum F. W. Peirson 1924-2-9 4523 Orange Between Wintersberg and the sea. Comment
  POM254669  Atriplex watsonii F. W. Peirson 1924-2-10 4533 Orange Corona Del Mar Comment
  RSA401668A  Limonium californicum var. mexicanum F. W. Peirson 1924-8-24 s.n. Orange 2.5 miles from Balboa on road inland. Comment
  RSA69761  Batis maritima F. W. Peirson 1921-1-9 2353 Orange near end of beach, Balboa Comment
  RSA70613  Euphorbia misera F. W. Peirson 1919-11-8 2041 Orange South of Arch Beach, near Laguna Beach Comment
  RSA71016  Cressa truxillensis F. W. Peirson 1924-5-31 4647 Orange Laguna Canyon, near Laguna Beach. 106 Comment
  RSA74144  Phacelia distans F. W. Peirson 1923-5-5 4713 Orange Trabuco Canyon, Santa Ana Mountains 518 Comment
  RSA77721  Viola purpurea subsp. purpurea F. W. Peirson 1923-5-6 3498 Orange Summit of Santiago Peak, Santa Ana Mts. 1707 Comment
  RSA77736  Viola sheltonii F. W. Peirson 1923-5-6 3496 Orange Good colony in deep soil, in shade long trail from Trabuco Canyon, Santiago Peak. 1677 Comment
  RSA80436  Antirrhinum nuttallianum subsp. nuttallianum F. W. Peirson 1923-5-5 4489 Orange Trabuco Canyon, Santa Ana Mountains 518 Comment
  RSA82104  Mimulus aurantiacus var. pubescens F. W. Peirson 1924-5-31 4660 Orange Laguna Canyon, near Laguna Beach. 61 Comment
  RSA84221  Dudleya abramsii subsp. parva F. W. Peirson 1924-5-31 4674 Orange 5 miles southeast of Laguna Beach. Comment
Read comments
Dec 20 2019
  RSA85842  Marsilea vestita F. W. Peirson 1924-5-31 4645 Orange Laguna Canyon, near Laguna Beach 106 Comment
  RSA86970  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1925-4-10 5739 Orange In Silverado Canyon. 610 Comment
  RSA87135  Leptochloa fusca subsp. uninervia F. W. Peirson 1924-8-29 5062 Orange Santa Ana. Comment
  SD87558  Camissoniopsis cheiranthifolia subsp. suffruticosa F. W. Peirson 1924-5-31 4670 Orange 5.0 miles south of Laguna; on sea bluffs. Comment
  UCR136650  Solanum nigrum F. W. Peirson 1924-2-9 4523 Orange South Coast, between Wintersburg and the sea 9 Comment
  CAS-BOT-BC283933  Chaenactis glabriuscula var. glabriuscula F. W. Peirson 1924-5-31 4671 Orange 5 miles S of Laguna on sea bluff Comment
  POM98118  Ceanothus oliganthus F. W. Peirson 1925-4-11 5735 Orange slope above mill, in Silverado Canyon, Santa Ana Mountains. 915 Comment
  RSA64759  Chenopodium ambrosioides var. ambrosioides F. W. Peirson 1924-8-29 5079 Orange 6 miles from Balboa on road inland along creek. Comment
  RSA65270  Chorizanthe procumbens F. W. Peirson 1924-5-30 6022 Orange Southward from Canada Salada. Comment
  RSA65452  Rumex maritimus F. W. Peirson 1924-8-29 s.n. Orange 3 miles from Balboa Beach. Comment
  RSA90319  Lotus scoparius F. W. Peirson 1923-3-26 4093 Orange Canada Salada. Comment
  RSA91844  Spartina foliosa F. W. Peirson 1924-8-29 5083 Orange 2.5 miles from Balboa on road inland along creek. Comment
  RSA92095  Cyperus niger var. capitatus F. W. Peirson 1924-10-19 5231 Orange Wintersberg Comment
  RSA92179  Layia platyglossa subsp. campestris F. W. Peirson 1925-4-11 5747 Orange 5 miles south of Laguna Beach. Comment
  RSA92227  Calycadenia tenella F. W. Peirson 1922-5-18 1353 Orange Santa Ana River 122 Comment
  RSA92273  Calycadenia tenella F. W. Peirson 1926-4-25 6643 Orange Laguna canyon Comment
  RSA92407  Bidens laevis F. W. Peirson 1924-10-19 5245 Orange Wintersberg. Comment
  RSA92493  Helianthus nuttallii subsp. parishii F. W. Peirson 1924-10-19 5246 Orange Wintersberg. Comment
  RSA92917  Lasthenia gracilis F. W. Peirson 1924-5-31 4667 Orange 5 miles southeast of Laguna Beach. Comment
  RSA93085  Pluchea odorata F. W. Peirson 1919-11-8 1299 Orange Aliso Creek. 0 Comment
  RSA93743  Aster subulatus var. ligulatus F. W. Peirson 1924-10-19 5240 Orange Wintersberg Comment
  RSA93931  Ambrosia chamissonis F. W. Peirson 1921-1-9 1320 Orange Balboa Beach. Comment
  RSA95350  Ceanothus oliganthus F. W. Peirson 1925-4-11 5735 Orange slope above mill, in Silverado Canyon, Santa Ana Mountains. 915 Comment
  CAS-BOT-BC228465  Plagiobothrys mollis Frank W. Peirson 1926-6-21 6803 Plumas Open strip of land between forest and lake on the N shore, Lake Almanor 1447 Comment
  CAS-BOT-BC466623  Allium campanulatum Frank W. Peirson 1926-6-21 6805 Plumas Quincy. Northern Sierra Nevada 2074 Comment
  PASA154  Orthocarpus lacerus Frank W. Peirson 1926-6-21 Plumas East slope Sierra Nevada on the Humbolt Rd. Comment
  POM98576  Horkelia fusca subsp. tenella F. W. Peirson 1926-6-21 6794 Plumas Lake almanor, along N shore of Lake Comment
  RSA71913  Navarretia capillaris F. W. Peirson 1932-7-19 10353 Plumas Along Feather River near Chester. 1463 Comment
  RSA82325  Scutellaria californica F. W. Peirson 1926-6-21 6795 Plumas Flat strip along lake; Lake Almanor. Comment
  RSA91492  Scirpus congdonii F. W. Peirson 1932-7-19 10348 Plumas Feather River. Near Chester. 1463 Comment
  RSA91576  Trifolium productum F. W. Peirson 6817 Plumas Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
  RSA92196  Hymenoxys lemmonii F. W. Peirson 1932-7-20 10356 Plumas North of Layalton, probably in Plumas Co. (in Sierra Valley) Comment
  SD87611  Erythranthe pulsiferae Frank W. Peirson 1926-6-21 6801 Plumas South shore Lake Almanor, flat land along lake, mostly shade Comment
  SD87811  Downingia bacigalupii Frank W. Peirson 1926-6-21 6802 Plumas Near Lake Almanor. Comment
  CAS-BOT-BC106344  Brickellia atractyloides var. arguta Frank W. Peirson 1928-4-24 7900 Riverside Cottonwood Spring Comment
  CAS-BOT-BC195677  Distichlis spicata Frank W. Peirson 1922-4-29 4541 Riverside South of Lake Elsinore Comment
  CAS-BOT-BC390553  Spergularia platensis Frank W. Peirson 1922-4-29 2926 Riverside South of Lake Elsinore 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-BC83346  Myosurus minimus Frank W. Peirson 1922-4-29 2945 Riverside South of Lake Elsinore. 374 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
  LA38961  Mimulus palmeri Frank W. Peirson; 1922-4-30 2934 Riverside below summit of St. Johns Grade 761 Comment
  PASA1246  Poa bigelovii Frank W. Peirson 1921-3-22 Riverside Murray Canyon 457 Comment
  PASA1350  Peucephyllum schottii Frank W. Peirson 1930-5-29 Riverside Painted Canyon Comment
  PASA2297  Psilocarphus globiferus Frank W. Peirson 1922-4-29 Riverside Lake Elsinore 380 Comment
  PASA247  Trifolium stenophyllum Frank W. Peirson 1922-4-29 Riverside Lake Elsinore 380 Comment
  PASA2723  Astragalus douglasii var. parishii Frank W. Peirson 1922-5-20 3342 Riverside Hemet Valley, San Jacinto Mtns. 1371 Comment
  PASA2745  Astragalus pomonensis Frank W. Peirson 1920-6-6 7696 Riverside Dripping Spring, Temecula River 457 Comment
  POM14735  Stephanomeria pauciflora F. W. Peirson 1922-12-27 3335 Riverside Andreas Canyon, near Palm Springs. 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
  POM47635  Astragalus nuttallianus var. cedrosensis F. W. Peirson 1922-4-9 584 Riverside Murray Canyon. North bank, 1/2 mile above mouth. Comment
  POM9919  Stemodia durantifolia F. W. Peirson 1920-12-28 s.n. Riverside Murray Canyon near Palm Springs Comment
  RSA0070921  Pentagramma maxonii F. W. Peirson 1921-3-20 5357 Riverside Andreas Canyon, near Palm Springs. 243 Comment
  RSA357376  Orcuttia californica F. W. Peirson 1922-5-19 3028 Riverside Menifee Valley Comment
  RSA453237  Prunus fremontii F. W. Peirson 1922-12-7 s.n. Riverside Andreas Canyon. 610 Comment
  RSA498235  Astragalus lentiginosus var. coachellae F. W. Peirson 1920-2-17 s.n. Riverside Whitewater River, Colorado Desert, river at bridge. Comment
  RSA498786  Lotus rigidus F. W. Peirson 1920-2-16 s.n. Riverside Murray Canyon, Palm Springs region. 274 Comment
  RSA65122  Eriogonum deflexum var. deflexum F. W. Peirson 1928-11-30 8215 Riverside Near Cottonwood Spring, west end of Eagle Mountains. Comment
Read comments
Oct 9 2010
  RSA65277  Chorizanthe xanti var. leucotheca F. W. Peirson 1914-04 1776 Riverside Whitewater, west end of Coachella Valley. Comment
  RSA65378  Atriplex polycarpa F. W. Peirson 1927-11-25 s.n. Riverside Thousand-Palm Canyon, edge of Coachella Valley. Comment
  RSA65623  Opuntia ramosissima F. W. Peirson 1928-4-24 7906 Riverside Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert. Comment
  RSA65625  Elatine californica F. W. Peirson 1922-5-21 4109 Riverside Hemet Valley. [Hemet Valley = Garner Valley -SDW] 1338 Comment
  RSA65628  Callitriche marginata F. W. Peirson 1922-4-29 2943 Riverside South of Lake Elsinore. 381 Comment
  RSA65708  Silene antirrhina F. W. Peirson 1919-4-14 5321 Riverside Murray Canyon near Palm Springs 381 Comment
  RSA66252  Arabis johnstonii F. W. Peirson 1922-5-21 3030 Riverside Along east side of Hemet Valley 1357 Comment
  RSA66302  Papaver californicum F. W. Peirson 1918-03 1890 Riverside Irrigated field near Indio. Comment
  RSA66743  Eschscholzia minutiflora F. W. Peirson 1914-04 1886 Riverside Whitewater, Nw corner of Colorado Desert, River Co. Comment
  RSA66779  Thysanocarpus curvipes var. curvipes F. W. Peirson 1922-5-21 3017 Riverside Hemet Valley. [Hemet Valley = Garner Valley -SDW] 1338 Comment
  RSA68981  Plantago ovata var. fastigiata F. W. Peirson 1926-2-22 6510 Riverside Thousand-Palms Canyon; Coachella Valley Comment
  RSA69581  Mentzelia involucrata var. megalantha F. W. Peirson 1933-4-15 10652 Riverside Whitewater River, 4.5 miles above the bridge. 701 Comment
  RSA69622  Juncus acutus subsp. leopoldii F. W. Peirson 1924-12-30 5409 Riverside Thousand-Palms Canyon, north side of Coachella Valley. 122 Comment
  RSA69630  Juncus mexicanus F. W. Peirson 1924-6-1 4676 Riverside River lands along Santa Ana River. 152 Comment
  RSA69673  Juncus bufonius F. W. Peirson 1922-4-29 5353 Riverside South of Lake Elsinore. 381 Comment
  RSA69917  Asclepias subulata F. W. Peirson 1924-12-30 5420 Riverside Near mouth of Thousand Palms Canyon, Coachella Valley 91 Comment
  RSA69991  Allionia incarnata F. W. Peirson 1919-4-13 1849 Riverside Tahquitz Canyon stream, near Palm Springs. Comment
  RSA70007  Tidestromia oblongifolia F. W. Peirson 1928-11-30 8211 Riverside Foot canyon below Shavers Well, NE of Mecca. Comment
  RSA70053  Epipactis gigantea Frank W. Peirson 1924-7-27 4984 Riverside Dark Canyon, San Jacinto Mountains. 1799 Comment
  RSA70095  Juncus bufonius var. occidentalis F. W. Peirson 1922-4-29 2928 Riverside South of Lake Elsinore. 381 Comment
  RSA70426  Ditaxis lanceolata F. W. Peirson 1927-4-12 7169 Riverside In Painted Canyon near Mecca. Comment
  RSA70431  Ditaxis californica F. W. Peirson 1921-3-23 2043 Riverside Deep Canyon Wash, 12 miles southeast of Palm Springs. 152 Comment
  RSA70546  Chamaesyce arizonica F. W. Peirson 1922-12-28 4256 Riverside Andreas Canyon near Palm Springs Comment
  RSA70555  Croton californicus F. W. Peirson 1932-11-26 9661 Riverside Thousand Palms. 122 Comment
  RSA70558  Croton californicus F. W. Peirson 1920-12-29 4439 Riverside 1.5 miles east of Whitewater Station, head of Coachella Valley. Comment
  RSA71003  Cuscuta ceanothi F. W. Peirson 1924-7-29 5036 Riverside Banning to Idyllwild Rd. 1555 Comment
  RSA71929  Aliciella latifolia F. W. Peirson 1922-4-11 2871 Riverside Deep Canyon Region, north base of Santa Rosa Mountains Comment
  RSA72201  Camissonia pallida subsp. hallii F. W. Peirson 1914-04 791 Riverside Whitewater east of Beaumont. Comment
  RSA72237  Camissonia claviformis subsp. aurantiaca F. W. Peirson 1920-2-16 2707 Riverside Palm Canyon stream below the canyon, Palm Springs. region Comment
  RSA72287  Gilia angelensis F. W. Peirson 1929-5-4 8334 Riverside Summit of St John's grade. 792 Comment
  RSA72319  Gilia diegensis F. W. Peirson 1917-4-1 925 Riverside Along south edge of Colorado Desert embayment east of Palm Springs, above ''Garden of Eden'. Comment
  RSA73056  Leptosiphon lemmonii F. W. Peirson 1922-4-28 2931 Riverside Temescal Canyon. 335 Comment
  RSA74713  Nama demissa var. deserti F. W. Peirson 1920-2-15 2315 Riverside Palm Springs, Tahquitz Camp. Comment
  RSA74715  Nama demissa var. deserti F. W. Peirson 1926-1-31 6483 Riverside Dos Palmas [Spring], Colorado Desert. Comment
  RSA75413  Oenothera deltoides subsp. deltoides F. W. Peirson 1918-03 779 Riverside Irrigated field near Indio. Comment
  RSA76945  Rhus trilobata var. pilosissima F. W. Peirson 1928-3-24 7727 Riverside Large clumps along road up Temecula River, just north of Dripping Spring. 457 Comment
  RSA76968  Ziziphus parryi F. W. Peirson 1922-4-9 2870 Riverside Andreas Canyon, Palm Springs Region. 366 Comment
  RSA77426  Petalonyx linearis F. W. Peirson 1921-3-23 2376 Riverside Deep Canyon south of Coachella Valley 335 Comment
  RSA77874  Heliotropium curassavicum var. oculatum F. W. Peirson 1920-6-22 994 Riverside Temescal canyon 305 Comment
  RSA79572  Cryptantha costata F. W. Peirson 1918-03 5798 Riverside Irrigated field near Indio. Comment
  RSA79596  Cryptantha barbigera F. W. Peirson 1928-3-10 7710 Riverside Near Hidden Spring, N of Salton Sea, Riverside County. Comment
  RSA79608  Cryptantha angustifolia F. W. Peirson 1928-3-10 7704 Riverside Flat areas where water had stood, near sand dunes W of Indio Comment
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Oct 23 2011
  RSA80213  Plagiobothrys kingii F. W. Peirson 1922-4-29 2924 Riverside Field S of Lake Elsinore 375 Comment
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Dec 19 2018
  RSA80383  Solanum umbelliferum F. W. Peirson 1922-4-29 4487 Riverside Leach Canyon. (base of Santa Ana Mts., near Elsinore) 534 Comment
  RSA80731  Nicotiana clevelandii F. W. Peirson 1928-3-10 7709 Riverside Along sides of main canyon near Hidden Springs, northeast of Mecca. Comment
  RSA82119  Orobanche cooperi subsp. cooperi F. W. Peirson 1930-3-29 8692 Riverside At foot of Painted Canyon, lower Coachella Valley. 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
  RSA85934  Selaginella bigelovii Frank W. Peirson 1920-2-15 1530 Riverside Murray Canyon near Palm Springs Comment
  RSA86343  Juniperus californica F. W. Peirson 1922-12-27 3332 Riverside Between forks of Andreas Canyon, near Palm Springs 609 Comment
  RSA86861  Prunus fasciculata F. W. Peirson 1928-4-24 7915 Riverside Plateau land west of Cottonwood Springs, northeast of mecca. Comment
  RSA86985  Cercidium floridum F. W. Peirson 1921-4-13 sn Riverside Deep Canyon Wash, about 12 miles SE of Palm Springs. 152 Comment
  RSA87021  Prosopis glandulosa var. torreyana F. W. Peirson 1920-6-22 4068 Riverside Temescal Canyon north of Elsinore 290 Comment
  RSA87061  Hordeum brachyantherum F. W. Peirson 1922-5-18 4336 Riverside Temescal Canyon 320 Comment
  RSA87095  Lupinus pallidus F. W. Peirson 1922-4-9 s.n. Riverside Palm Canyon region, head of Coachella Valley Comment
  RSA87112  Galium angustifolium subsp. angustifolium F. W. Peirson 1920-6-22 4500 Riverside Dripping Springs, Temecula River 457 Comment
  SBBG28232  Eriogonum thomasii F. W. Peirson 1927-4-12 7171 Riverside Painted Cyn, near Mecca Comment
  SBBG98295  Baileya pauciradiata F. W. Peirson 1921-4-12 2775 Riverside Indian Wells Comment
  SD87599  Senecio mohavensis F. W. Peirson 1921-3-22 2378 Riverside Murray CaA'on near Palm Springs. 455 Comment
  UC483076  Salix laevigata Frank W. Peirson 1928-3-10 7700 Riverside Snow Creek Auto Camp Whitewater Comment
  UC501502  Chimaphila umbellata Frank W. Peirson 1924-7-27 5004 Riverside 1 mi. w. Deer Spring; San Jacinto Mts. 2438 Comment
  UC511759  Phacelia campanularia subsp. campanularia Frank W. Peirson 1926-2-22 6499 Riverside talus slope at e end Bridge over Whitewater River Comment
  UC570561  Hymenoxys odorata Frank W. Peirson 1935-4-17 11468 Riverside 20 mi s Blythe Comment
  UC912512  Viguiera parishii Frank W. Peirson 1921-3-20 Riverside Murray Canyon Region Colorado Desert, Murray Canyon Region Comment
  UCR208174  Muilla maritima F. W. Peirson 1922-4-29 2942 Riverside Perris-Aguanga Region, 2 miles south of Lake Elsinore along boulevard 366 Comment
  RSA0066528  Orobanche cooperi subsp. cooperi Frank W. Peirson 1924-12-30 5422 Riverside Thousand-Palms Canyon, Coachella Valley. 121 Comment
  RSA0117462  Collinsia concolor F. W. Peirson 1921-5-19 3040 Riverside Rocky slope not far from floor of Hemet Valley. 1341 Comment
  RSA0126423  Nemacladus longiflorus var. longiflorus F. W. Peirson 1922-4-28 2920 Riverside Temescal Canyon. 335 Comment
  RSA0127363  Mentzelia longiloba var. longiloba F. W. Peirson 1932-3-22 9809 Riverside About 6 miles N of Blythe on Needles Road. 122 Comment
  RSA90215  Astragalus filipes F. W. Peirson 1922-5-20 3341 Riverside Hemet Valley, San Jacinto Mountains. 1371 Comment
  RSA90230  Astragalus douglasii var. parishii F. W. Peirson 1922-5-20 3342 Riverside Hemet Valley, San Jacinto Mountains. 1371 Comment
  RSA90388  Lotus strigosus var. tomentellus F. W. Peirson 1921-4-13 4085 Riverside Deep Canyon, about 12 miles southeast of Palm Springs. 274 Comment
  RSA90640  Astragalus palmeri F. W. Peirson 1921-3-21 4751 Riverside Gordon Trail, E slope of San Jacinto Mts. 1220 Comment
  RSA91118  Trifolium monanthum subsp. grantianum F. W. Peirson 1924-7-28 5016 Riverside Pine flats Camp, San Jacinto Mts. 1799 Comment
  RSA91375  Psorothamnus emoryi F. W. Peirson 1939-11-25 s.n. Riverside Foot of mountain near Painted Canyon. Comment
  RSA91380  Linum lewisii F. W. Peirson 1922-5-20 3036 Riverside North side of Hemet Valley, San Jacinto Mts. 1372 Comment
  RSA91516  Poa secunda F. W. Peirson 1933-4-15 1055 Riverside Whitewater Canyon, 4 miles above bridge of Hwy from Banning to Indio, 701 Comment
  RSA92220  Perityle emoryi F. W. Peirson 1369 Riverside Andreas Canyon near Palm Springs. 274 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
  RSA92622  Salix lasiolepis F. W. Peirson 1922-6-29 5437 Riverside Tahquitz Valley. 2134 Comment
  RSA92874  Baileya pauciradiata F. W. Peirson 1926-2-22 6503 Riverside Thousand Palm Canyon, Coachella Valley 122 Comment
  RSA92991  Lasthenia coronaria F. W. Peirson 1922-5-19 4519 Riverside 5 miles NE of Murrieta 457 Comment
  RSA93161  Baccharis sergiloides F. W. Peirson 1928-9-6 8205 Riverside Morongo Canyon, eastern end of San Bernardino Mts. Comment
  RSA93216  Corethrogyne filaginifolia F. W. Peirson 1924-7-28 5017 Riverside Pine Flats Camp 1799 Comment
  RSA93765  Geraea canescens F. W. Peirson 1918-03 1333 Riverside Irrigated field near Indio. Comment
  RSA93812  Chaenactis fremontii F. W. Peirson 1926-2-22 6501 Riverside On talus slope east of bridge over Whitewater River, head of Coachella Valley Comment
  RSA94418  Eriophyllum ambiguum var. paleaceum F. W. Peirson 1920-2-16 1387 Riverside Murray Canyon, Palm Springs region. 274 Comment
  RSA95060  Rafinesquia neomexicana F. W. Peirson 1914-04 1476 Riverside Whitewater at head of Coachella Valley. Comment
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Apr 30 2011
  RSA95082  Microseris lindleyi F. W. Peirson 1921-3-22 2381 Riverside Murray Canyon, south side in canyon 457 Comment
  RSA95111  Agoseris heterophylla var. heterophylla F. W. Peirson 1922-5-20 3045 Riverside Hemet Valley, San Jacinto Mountains. 1371 Comment
  RSA95324  Malacothamnus densiflorus var. densiflorus F. W. Peirson 1926-5-2 6724 Riverside Grade north of Dripping Spring, Temecula River, southwestern Riverside Co. Comment
  RSA95371  Sphaeralcea ambigua subsp. ambigua F. W. Peirson 1922-4-11 4106 Riverside Deep Canyon Wash, southwest of Indio 244 Comment
  RSA97151  Lomatium dasycarpum subsp. dasycarpum F. W. Peirson 1922-5-19 4461 Riverside 3 miles northeast of Murrieta. Comment
  RSA97396  Apiastrum angustifolium F. W. Peirson 1922-5-19 5430 Riverside 5 miles northeast of Murrieta. Comment
  RSA97436  Lomatium vaginatum F. W. Peirson 1922-4-29 2932 Riverside South of Lake Elsinore. 381 Comment
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Dec 8 2013
  SEINET10458956  Triodanis biflora Frank W. Peirson Peirson 6723 Riverside DRIPPING SPRING Comment
  SEINET10460870  Nemacladus sigmoideus Frank W. Peirson Peirson 7913 Riverside n Colorado Desert Comment
  CAS-BOT-BC100839  Chrysothamnus viscidiflorus subsp. viscidiflorus Frank W. Peirson 1931-10-10 s.n. San Bernardino Road to Fish Hatchery south of Baldwin Lake, San Bernardino Mts. 2194 Comment
  CAS-BOT-BC101327  Corethrogyne filaginifolia Frank W. Peirson 1923-8-25 4736 San Bernardino Mill Cr., San Bernardino Mts. 1645 Comment
  CAS-BOT-BC112009  Schoenus nigricans Frank Warrington Peirson 1924-9-2 5199 San Bernardino Arrowhead Hot Springs, San Bernardino Mts. 579 Comment
  CAS-BOT-BC132526  Calochortus striatus Frank W. Peirson 1924-5-14 4563 San Bernardino Box S. Springs Comment
  CAS-BOT-BC142720  Phacelia exilis Mabel B. Peirson 1932-5-29 9969 San Bernardino Slopes south of Baldwin Lake, San Bernardino Mts. open plateau region along Fish Hatchery Road 2103 Comment
  CAS-BOT-BC143819  Cercocarpus ledifolius var. ledifolius F. W. Peirson 1905-7-14 79 San Bernardino Ontario Ridge, Mt. Baldy, San Gabriel Mts. [entered as LA Co.; Ontario Ridge is in SanBrndo Co.] 2590 Comment
  CAS-BOT-BC145268  Potentilla wheeleri Frank W. Peirson 1924-5-16 4606 San Bernardino East end Bear Lake 2042 Comment
  CAS-BOT-BC184460  Vulpia microstachys var. pauciflora F. W. Peirson 1922-6-24 3134 San Bernardino .25 mi. above South Fork on south bank of Santa Ana River, San Bernardino Mts. Comment
  CAS-BOT-BC195688  Distichlis spicata Frank W. Peirson 1924-5-14 4541 San Bernardino Box Spring, Cushenberry region, Mojave Desert 1082 Comment
  CAS-BOT-BC205346  Lupinus elatus F. W. Peirson; Bulletin Torrey Club 1919-6-4 2435 San Bernardino Icehouse Canon [Canyon] Comment
  CAS-BOT-BC217403  Gentiana fremontii Frank W. Peirson 1922-6-22 3136 San Bernardino Santa Ana River, San Bernardino Mountains 2377 Comment
  CAS-BOT-BC255539  Poa annua F. W. Peirson 1924-5-15 4538 San Bernardino At N side of Baldwin Lake, San Bernardino Mountains 2057 Comment
  CAS-BOT-BC28034  Boechera xylopoda Frank W. Peirson 1930-4-16 8733 San Bernardino Cima Road, 10 miles south of the Las Vegas Road. Comment
  CAS-BOT-BC296019  Erigeron divergens Frank W. Peirson 1924-5-15 4595 San Bernardino Baldwin Lake, San Bernardino Mts. Comment
  CAS-BOT-BC298240  Ericameria nauseosa var. oreophila Frank W. Peirson 1922-8-26 4050 San Bernardino San Bernardino Mts. Santa Ana River 2057 Comment
  CAS-BOT-BC298564  Erigeron divergens F. W. Peirson 1943-5-30 13551 San Bernardino Baldwin Lake, San Bernardino Mts., southern California Comment
  CAS-BOT-BC299871  Dieteria canescens var. canescens Frank W. Peirson 1929-9-16 8593 San Bernardino Near Baldwin Lake, San Bernardino Mts. 2103 Comment
  CAS-BOT-BC314155  Monardella linoides Frank W. Peirson 1922-8-22 4729 San Bernardino San Bernardino Mts. South Fork, Santa Ana River 2560 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-BC43199  Descurainia pinnata subsp. brachycarpa Frank W. Peirson 1933-6-25 10673 San Bernardino San Bernardino Mountains. Two miles southeast of Baldwin Lake. 2133 Comment
  JEPS17474  Hydrocotyle umbellata Frank W. Peirson 1920-5-18 2141 San Bernardino San Gabriel Mts., Lytle Creek Comment
  JEPS2130  Phacelia austromontana Frank W. Peirson 1919-6-4 506 San Bernardino Icehouse Canyon San Gabriel Mountains, Mount San Antonio 2057 Comment
  JEPS31871  Symphyotrichum frondosum Frank W. Peirson 1924-5 4595 San Bernardino Baldwin Lake San Bernardino Mts. 2036 Comment
  JEPS36576  Hieracium albiflorum F. W. Peirson 1918-7-7 San Bernardino 15 mi from Upland (towards Mt. San Antonio); Icehouse Canyon 1981 Comment
  JEPS44626  Prunus fasciculata Frank W. Peirson 1922-5-12 1987 San Bernardino Cajon Pass; San Gabriel Range, Cajon Pass 1981 Comment
  JEPS48969  Sisyrinchium bellum Frank W. Peirson 1918-7-8 11 San Bernardino San Antonio Canyon 1828 Comment
  JEPS49178  Ribes roezlii Frank W. Peirson 1918-7-8 70 San Bernardino Mt. San Antonio, East trail San Gabriel Mountains 2865 Comment
  JEPS50883  Silene verecunda Frank Peirson 1918-7-7 40 San Bernardino Ontario Ridge San Antonio Range, Ontario Ridge 2438 Comment
  JEPS50992  Silene parishii Frank W. Peirson 1918-8-17 38 San Bernardino Baldy Devil's Backbone, Baldy 2438 Comment
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Jan 4 2012
  JEPS51152  Stellaria calycantha Frank W. Peirson 1923-8-23 4158 San Bernardino High Creek; San Bernardino Mts. Comment
  JEPS54597  Astragalus douglasii var. parishii F. W. Peirson Oct. 1933 San Bernardino Bear Lake , Bear Lake (San Bernardino Mts.) Comment
  JEPS61293  Mirabilis pumila Frank W. Peirson 1922-8-27 3288 San Bernardino Santa Ana River; San Bernardino Mts, Santa Ana River 1432 Comment
  JEPS64321  Corallorhiza maculata Frank W. Peirson 1922-7-18 3212 San Bernardino Kelly's Cabin San Gabriel Mountains, Ontario Ridge 2468 Comment
  JEPS67967  Cryptantha micrantha Frank W. Peirson 1919-4-16 370 San Bernardino Cajon Pass San Gabriel Mountains 685 Comment
  JEPS7064  Collinsia torreyi var. brevicarinata Frank W. Peirson 1919-6-4 454 San Bernardino Icehouse Canyon Divide; San Gabriel Mtns 2407 Comment
  JEPS88975  Dudleya abramsii subsp. affinis Frank W. Peirson 1933-6-24 8972 San Bernardino ridge s summit of Johnson Grade; San Bernardino Mtns 2133 Comment
  JEPS9916  Lasthenia gracilis F. W. Peirson 1919-4-16 389 San Bernardino Cajon Pass 685 Comment
  PASA1040  Veronica serpyllifolia var. humifusa Frank W. Peirson 1922-6-22 San Bernardino South Fork Santa Ana Meadows, San Bernardino Mts. 2346 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
  PASA119  Mimulus bigelovii Frank W. Peirson 1922-5-12 San Bernardino ""Copper City"", near Pilot Knob, Mohave Desert Comment
  PASA1258  Iris missouriensis Frank W. Peirson 1930-7-3 San Bernardino Road to Fish Hatchery south of Baldwin Lake, San Bernardino Mts. 2194 Comment
  PASA1305  Silene platyota Frank W. Peirson 1930-7-4 San Bernardino Greene Creek, north slope sugarloaf, San Bernardino Mts. 2438 Comment
  PASA1311  Arenaria macradenia Frank W. Peirson 1930-7-2 San Bernardino Ridge south of summit of Johnson's Grade, San Bernardino Mts. 2103 Comment
  PASA156  Orthocarpus lasiorhynchus Frank W. Peirson 1930-7-7 San Bernardino Arrastre Flat, San Bernardino Mts. 2285 Comment
  PASA1718  Erigeron breweri Frank W. Peirson 1930-7-7 San Bernardino Arrastre Flat, San Bernardino Mts. 2285 Comment
  PASA1737  Gutierrezia lucida Frank W. Peirson 1924-8-31 San Bernardino Box S. Spring 1081 Comment
  PASA1813  Corethrogyne filaginifolia Frank W. Peirson 1924-9-2 San Bernardino Fish Camp, San Bernardino Mts. 2057 Comment
  PASA2205  Dyssodia cooperi Frank W. Peirson 1922-5-12 San Bernardino 3 miles south of Barstow on the Victoryville Road Comment
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Oct 23 2014
  PASA2276  Anaphalis margaritacea var. occidentalis Frank W. Peirson 1923-8-21 San Bernardino Small canyon southeast of Forest Home. Mill Creek, San Bernardino Mts. 1828 Comment
  PASA2374  Acer negundo var. californicum Frank W. Peirson 1924-7-16 San Bernardino Oak Glen, south base San Bernardino Mts. 1462 Comment
  PASA2710  Astragalus agninus Frank W. Peirson 1928-4-1 7759 San Bernardino Silver Lake, about 8 miles north of Baker Comment
  PASA2712  Astragalus bernardinus Frank W. Peirson 1930-5-31 8924 San Bernardino Summit of grade above Warrens Well Comment
  PASA651  Distichlis spicata Frank W. Peirson 1930-7-1 San Bernardino Southwest shore of Baldwin Lake, San Bernardino Mts. 2042 Comment
  PASA857  Penstemon caesius Frank W. Peirson 1930-7-4 San Bernardino Green Creek, north slope Sugarloaf, San Bernardino Mts. 2499 Comment
  PASA931  Hieracium horridum Frank W. Peirson 1930-7-7 San Bernardino Arrastre Flat, San Bernardino Mts. 2255 Comment
  POM13539  Sagina saginoides F. W. Peirson 1922-6-22 s.n. San Bernardino South Fork of Santa Ana River 2377 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
  POM13547  Gentiana fremontii F. W. Peirson 1922-6-22 3136 San Bernardino South Fork of Santa Ana River. 2378 Comment
  POM14072  Cymopterus aboriginum F. W. Peirson, I. M. Johnston 1922-5-14 6540 San Bernardino Northeast slope of Pilot Knob Comment
  POM142529  Camissonia confusa F. W. Peirson 1920-5-28 4701 San Bernardino San Antonio Canyon, San Gabriel Mts. 1463 Comment
  POM212920  Salvia mohavensis F. W. Peirson 1935-4-18 11496 San Bernardino Whipple Mountains: In a valley in the north part of the range not far from the road going down into Copper Basin. Comment
  POM3458  Leptodactylon pungens F. W. Peirson 1921-6-16 2828 San Bernardino Bear Valley. Comment
  POM43350  Horkelia wilderae F. W. Peirson 1922-6-25 4277 San Bernardino Barton Flats. Comment
  RSA0008414  Erigeron parishii F. W. Peirson 1939-5-21 s.n. San Bernardino Cushenbury Grade, San Bernardino Mts. 1372 Comment
  RSA100231  Parishella californica F. W. Peirson 1922-5-12 2968 San Bernardino 22 miles north of Barstow, Comment
  RSA440031  Cleomella plocasperma F. W. Peirson 1924-9-1 5137 San Bernardino Cushenberry Grade. San Bernardino Mountains. 1128 Comment
  RSA64799  Chenopodium salinum F. W. Peirson 1924-7-5 4915 San Bernardino North shore of Baldwin Lake 2037 Comment
  RSA64892  Oxytheca caryophylloides F. W. Peirson 1926-9-5 7080 San Bernardino Lake Arrowhead 1524 Comment
  RSA64899  Eriogonum plumatella F. W. Peirson 1923-9-1 4002 San Bernardino Sheep Creek: north slope of San Gabriel Mountains. 1585 Comment
  RSA65034  Silene parishii F. W. Peirson 1924-7-14 4959 San Bernardino Lost Creek, San Bernardino Mountains. 2287 Comment
  RSA65342  Atriplex rosea F. W. Peirson 1923-8-30 4009 San Bernardino Northeast part of San Gabriel Mts., Lone Pine Canyon, Clyde Ranch. 1479 Comment
  RSA65524  Sagina saginoides F. W. Peirson 1922-6-21 5319 San Bernardino Cienega Seca Creek. 2134 Comment
  RSA65592  Minuartia nuttallii subsp. gracilis F. W. Peirson 1923-8-24 4285 San Bernardino Summit of Mt. San Gorgonio, San Bernardino Mountains. 3476 Comment
  RSA65599  Minuartia nuttallii subsp. gracilis F. W. Peirson 1909-8-9 623 San Bernardino Dry lake, San Bernardino Mountains. 2744 Comment
  RSA65771  Echinocereus engelmannii var. engelmannii F. W. Peirson 1922-6-23 3146 San Bernardino Creek leading up to a divide over Holocomb Creek, San Bernardino Mountains 2439 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
  RSA65890  Centrostegia thurberi var. thurberi F. W. Peirson 1917-5-13 1771 San Bernardino West of Victorville, on Palmdale road; Mojave Desert. Comment
  RSA65939  Polygonum ramosissimum F. W. Peirson 1924-9-1 5161 San Bernardino North side of Baldwin Lake, San Bernardino Mountains. 2043 Comment
  RSA65982  Eriogonum inflatum var. inflatum F. W. Peirson 1935-4-18 11479 San Bernardino Copper Basin Creek, Whipple Mountains Comment
  RSA65989  Eriogonum umbellatum var. subaridum F. W. Peirson 1922-7-7 3177 San Bernardino Sheep Creek, San Gabriel Mountains 1616 Comment
  RSA66038  Eriogonum baileyi var. baileyi F. W. Peirson 1924-8-31 5100 San Bernardino 1 mile N of cajon Pass. Comment
  RSA66186  Eriogonum cithariforme F. W. Peirson 1924-8-31 5101 San Bernardino 1 mile N of cajon Pass. Comment
  RSA66292  Dicentra chrysantha F. W. Peirson 1929-10-11 8596 San Bernardino City Creek Rd., 2 mi west of Bear Lake Dam. 2134 Comment
  RSA66491  Eschscholzia glyptosperma F. W. Peirson 1928-4-1 7771 San Bernardino canyon floor about 4 mi. below Bradbury Well, on road to Old Confidence Mill, Death Valley Region. Comment
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Dec 12 2016
  RSA66510  Arabis platysperma F. W. Peirson 1906-8-15 656 San Bernardino Lookout Mt., Bluff Lake, San Bernardino Mountains. Comment
  RSA66745  Eschscholzia minutiflora F. W. Peirson 1930-4-16 8739 San Bernardino 6 miles south of summit on Cima road, eastern San Bernardino County. Comment
  RSA66804  Streptanthella longirostris F. W. Peirson 1917-5-13 1914 San Bernardino West of Victorville, on Palmdale road; Mojave Desert. Comment
  RSA67107  Myosurus minimus subsp. montanus F. W. Peirson 1922-6-22 3110 San Bernardino South Fork of Santa Ana River. 2378 Comment
  RSA67141  Galium parishii F. W. Peirson 1930-7-7 9016 San Bernardino Arrastre Flat 2287 Comment
  RSA67155  Galium trifidum var. pusillum F. W. Peirson 1924-7-5 4893 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA67358  Lepidium flavum F. W. Peirson 1917-5-13 676 San Bernardino Mojave Desert. Comment
  RSA687779  Delphinium parishii F. W. Peirson 1933-6-24 10675 San Bernardino below the road and south of the turn up to the Johnston Summit, east of Baldwin Lake. San Bernardino Mts. 2058 Comment
  RSA68998  Samolus parviflorus F. W. Peirson 1920-6-22 s.n. San Bernardino Chino Creek 152 Comment
  RSA69319  Pyrola californica F. W. Peirson 1923-8-23 3983 San Bernardino Vivian Creek Marsh, San Bernardino Mts., southern California 2439 Comment
  RSA69391  Thalictrum sparsiflorum F. W. Peirson 1906-8-15 645 San Bernardino Bluff Lake, San Bernardino Mountains. 2256 Comment
  RSA69531  Maianthemum stellatum Frank W. Peirson 1922-7-22 4101 San Bernardino South Fork of Santa Ana River, San Bernardino Mountains 2378 Comment
  RSA69726  Lemna minuta F. W. Peirson 1924-8-31 5111 San Bernardino South of Victorville. 793 Comment
  RSA69874  Amsonia tomentosa var. tomentosa F. W. Peirson 1916-7-8 883 San Bernardino Box S Springs near north base of San Bernardino Mtns. 1082 Comment
  RSA69985  Mirabilis pumila F. W. Peirson 1920-8-26 2257 San Bernardino Santa Ana River, San Bernardino Mountains. 1372 Comment
  RSA69996  Styrax redivivus F. W. Peirson 1916-7-3 851 San Bernardino Waterman Canyon. Comment
  RSA70046  Corallorhiza maculata Frank W. Peirson 1922-7-18 3212 San Bernardino Kelly's Cabin, Ontario Ridge, San Gabriel Mountains, west San Bernardino County. 2470 Comment
  RSA70325  Asclepias eriocarpa F. W. Peirson 1924-9-2 5194 San Bernardino roadside a few roads up the road toward Greer Valley; city Creek Road. 1799 Comment
  RSA70363  Amsonia tomentosa var. tomentosa F. W. Peirson 1926-5-29 6737 San Bernardino Considerable clumps on roadside, Cactus Flat, San Bernardino Mts. 1799 Comment
  RSA70598  Iris missouriensis Frank W. Peirson 1930-7-3 8980 San Bernardino Below Fish Hatchery, south of Baldwin Lake, San Bernardino Mountains. 2195 Comment
  RSA71005  Cuscuta ceanothi F. W. Peirson 1920-8-26 2740 San Bernardino Santa Ana River 1372 Comment
  RSA71008  Cuscuta indecora F. W. Peirson 1924-9-1 5147 San Bernardino Cushenbury Springs, N base of San Bernardino Mountains., Mojave Desert. 1232 Comment
  RSA71834  Gilia leptantha subsp. leptantha F. W. Peirson 1922-7-24 2259 San Bernardino Santa Ana River 1905 Comment
  RSA71850  Gilia cana subsp. speciformis F. W. Peirson 1922-5-12 4138 San Bernardino Mojave Desert. 10 miles north of Barstow. Comment
  RSA72041  Phlox dolichantha F. W. Peirson 1930-7-7 9029 San Bernardino Along south edge of Holcomb Valley 2287 Comment
  RSA72230  Oenothera primiveris subsp. bufonis F. W. Peirson 1922-5-12 2997 San Bernardino 17 miles south of Barstow on Victorville road. 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
  RSA73028  Linanthus jonesii F. W. Peirson 1935-4-18 11483 San Bernardino Along canyon of Copper Basin Creek, Whipple Mountains, eastern Colorado Desert Comment
  RSA74190  Phacelia cicutaria var. hispida F. W. Peirson 1919-6-4 4715 San Bernardino San Antonio Canyon. 1448 Comment
  RSA74200  Phacelia campanularia subsp. vasiformis F. W. Peirson 1926-4-27 6678 San Bernardino 13 miles W of Victorville 915 Comment
  RSA74506  Phacelia exilis F. W. Peirson 1932-5-29 9969 San Bernardino Along road to Fish Hatchery, south of Baldwin Lake 2104 Comment
  RSA74701  Phacelia rotundifolia F. W. Peirson 1922-5-13 2979 San Bernardino Summit of Pilot Knob, Mohave Desert. 1677 Comment
  RSA74818  Nama rothrockii F. W. Peirson 1930-7-7 9025 San Bernardino Arrastre Flat 2287 Comment
  RSA74934  Phacelia davidsonii F. W. Peirson 1919-6-6 s.n. San Bernardino San Antonio Canyon 1677 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
  RSA75882  Nemophila menziesii var. integrifolia F. W. Peirson 1920-5-8 2739 San Bernardino San Antonio Canyon. 1341 Comment
  RSA76943  Rhus trilobata var. pilosissima F. W. Peirson 1921-5-30 5312 San Bernardino Summit of Cajon Pass.. 1159 Comment
  RSA77058  Loeseliastrum schottii F. W. Peirson 1927-5-7 7275 San Bernardino 1 mile east of Kramer. 2218 Comment
  RSA77061  Loeseliastrum matthewsii F. W. Peirson 1926-4-27 6683 San Bernardino Near Box S Ranch, 18 miles east of Victorville, Mojave Desert. Comment
  RSA77156  Ceanothus leucodermis F. W. Peirson 1921-7-18 4446 San Bernardino Lytle Creek, San Gabriel Mts. 1677 Comment
  RSA77196  Eremalche rotundifolia F. W. Peirson 1922-5-12 2987 San Bernardino 10 miles N of Barstow on Granite Wells Road Comment
  RSA77254  Nama californica F. W. Peirson 1921-5-29 2421 San Bernardino Cajon Pass Comment
  RSA77774  Viola macloskeyi F. W. Peirson 1922-7-18 3202 San Bernardino Kelly's Cabin, Ontario Ridge, San Gabriel Mountains, west San Bernardino County. 2470 Comment
  RSA77861  Pectocarya setosa F. W. Peirson 1919-4-16 363 San Bernardino Cajon Pass 762 Comment
  RSA78647  Eriophyllum confertiflorum F. W. Peirson 1943-5-16 13549 San Bernardino Highland Ave, E of Euclid Ave and W of San Bernardino. Comment
  RSA79851  Penstemon grinnellii F. W. Peirson 1924-7-5 4907 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA80036  Veronica serpyllifolia var. humifusa F. W. Peirson 1930-7-4 8985 San Bernardino Green Creek, north slope of Sugarloaf, San Bernardino Mts. 2378 Comment
  RSA80041  Veronica scutellata F. W. Peirson 1906-8-15 s.n. San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA80058  Veronica peregrina subsp. xalapensis F. W. Peirson 1930-7-7 9018 San Bernardino Arrastre Flat 2287 Comment
  RSA80151  Mimulus breweri F. W. Peirson 1922-8-23 3278 San Bernardino Dry Lake, San Bernardino Mountains. 2774 Comment
  RSA80229  Penstemon caesius F. W. Peirson 1924-7-5 4908 San Bernardino Bluff Lake, San Bernardino Mountains. 2287 Comment
  RSA80377  Solanum umbelliferum F. W. Peirson 1924-9-1 5154 San Bernardino Johnson's Grade, east end of San Bernardino Mountains 1982 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
  RSA82055  Cordylanthus nevinii F. W. Peirson 1923-8-25 3991 San Bernardino abundant on Mill Creek from the Vivian Creek trail. 1707 Comment
  RSA82239  Castilleja angustifolia F. W. Peirson 1930-4-16 8735 San Bernardino Cima Road, 10 miles south of the Las Vegasto Barstow Road Comment
  RSA82240  Castilleja angustifolia F. W. Peirson 1930-7-2 8968 San Bernardino Ridge at summit of Johnson's Grade, east of Baldwin Lake. 2104 Comment
  RSA82254  Castilleja angustifolia F. W. Peirson 1922-5-13 4152 San Bernardino Granite Wells, Mojave Desert. Comment
  RSA82996  Salvia pachyphylla subsp. pachyphylla F. W. Peirson 1920-8-22 1060 San Bernardino Ridge east of Foxesee Creek [Forsee Creek]. 2439 Comment
  RSA83417  Monardella macrantha subsp. macrantha F. W. Peirson 1933-7-12 10704 San Bernardino San Bernardino Mountains: City Creek Road. 1372 Comment
  RSA83451  Mentha arvensis F. W. Peirson 1906-8-13 s.n. San Bernardino Seven Oaks, San Bernardino Mts, southern California Comment
  RSA83931  Ranunculus californicus F. W. Peirson 1922-4-28 4305 San Bernardino Chino Creek, south of Chino 152 Comment
  RSA84286  Equisetum laevigatum F. W. Peirson 1922-6-24 3098 San Bernardino South Fork of the Santa Ana River 1921 Comment
  RSA84473  Ceratophyllum demersum F. W. Peirson 1924-8-31 s.n. San Bernardino South of Victorville 792 Comment
  RSA84475  Ceratophyllum demersum F. W. Peirson 1928-9-5 5112 San Bernardino Victorville Comment
  RSA84840  Ribes nevadense F. W. Peirson 1919-6-4 4434 San Bernardino Icehouse Canyon. 1677 Comment
  RSA84854  Ribes nevadense F. W. Peirson 1920-9-14 2810 San Bernardino Coldwater Cienega, Lytle Creek. 2134 Comment
  RSA85020  Polypodium hesperium F. W. Peirson 1923-8-22 3984 San Bernardino Vivian Creek, San Bernardino Mountains 2195 Comment
  RSA85190  Sparganium angustifolium F. W. Peirson 1924-7-5 1537 San Bernardino Bluff Lake Meadows, San Bernardino Mountains. 2287 Comment
  RSA85197  Typha latifolia F. W. Peirson 1923-8-30 4019 San Bernardino Clyde Ranch, Lone Pine Canyon. Eastern San Gabriel Mountains, west San Bernardino County 1494 Comment
  RSA85567  Zannichellia palustris F. W. Peirson 1922-4-28 2936 San Bernardino Chino Creek, near Chino 152 Comment
  RSA85609  Potentilla biennis F. W. Peirson 1930-7-4 8993 San Bernardino Greene Creek, north slope of Sugarloaf 2439 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
  RSA86294  Potentilla wheeleri F. W. Peirson 1924-5-15 4606 San Bernardino Wood on N side of East end of Bear Lake. 2043 Comment
  RSA86365  Pinus flexilis F. W. Peirson 1930-7-8 9037 San Bernardino Fish Hatchery creek [possibly Green Canyon Creek], north slope of Sugarloaf Peak, San Bernardino Mts. 2515 Comment
Read comments
Aug 15 2011
  RSA86649  Purshia tridentata var. glandulosa F. W. Peirson 1930-4-29 8759 San Bernardino Cactus Flats, east end of San Bernardino Mts. 1524 Comment
  RSA86678  Cercocarpus betuloides F. W. Peirson 1921-3-19 2807 San Bernardino San Antonio Wash east of Claremont. 457 Comment
  RSA86680  Cercocarpus ledifolius F. W. Peirson 1920-5-29 79 San Bernardino Ontario Ridge, near Ontario Peak, San Gabriel Mtns., western San Bernardino Co. 2591 Comment
  RSA86786  Lolium perenne subsp. multiflorum F. W. Peirson 1920-6-22 2166 San Bernardino 2 miles south of Chino Comment
  RSA86802  Rosa californica F. W. Peirson 1920-8-26 s.n. San Bernardino Santa Ana River 1372 Comment
  RSA86841  Prunus virginiana var. demissa F. W. Peirson 1918-7-5 82 San Bernardino Along Devil's Backbone on east trail to Mt. San Antonio, San Gabriel Mountains 2591 Comment
  RSA86846  Prunus emarginata F. W. Peirson 1924-5-16 4615 San Bernardino Bear Lake Dam. 2043 Comment
  RSA86972  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1923-3-23 7719 San Bernardino 1 mile east of Mentone. Comment
  RSA86988  Senna armata F. W. Peirson 1927-5-7 7288 San Bernardino 4 miles west of Barstow Comment
  RSA87310  Lupinus concinnus subsp. orcuttii F. W. Peirson 1930-4-16 8736 San Bernardino 8 miles south of Cima, eastern San Bernardino Comment
  RSA87335  Melica stricta var. albicaulis F. W. Peirson 1924-5-15 4545 San Bernardino Cactus Flat Comment
  RSA88680  Carex lemmonii F. W. Peirson 1922-6-23 5374 San Bernardino Holcomb Creek, San Bernardino Mountains. 2439 Comment
  RSA88814  Carex fracta F. W. Peirson 1924-7-5 4904 San Bernardino Bluff Lake, San Bernardino Mountains. 2286 Comment
  RSA90183  Astragalus bicristatus F. W. Peirson 1916-7-6 589 San Bernardino Bear Lake region [Big Bear Lake], San Bernardino Mountains. Comment
  RSA90249  Astragalus lentiginosus var. sierrae F. W. Peirson 1920-8-24 2347 San Bernardino Big Meadows, at head of Santa Ana River 2133 Comment
  RSA90436  Oxytropis oreophila var. oreophila F. W. Peirson 1923-8-24 s.n. San Bernardino Summit of Mt. San Gorgonio, San Bernardino Mountains. 3476 Comment
  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
  RSA92098  Carex senta F. W. Peirson 1922-6-24 3151 San Bernardino South Fork of the Santa Ana River 1921 Comment
  RSA92145  Schoenus nigricans F. W. Peirson 1924-9-2 5199 San Bernardino Arrowhead Hot Springs. 579 Comment
  RSA92148  Fimbristylis thermalis F. W. Peirson 1924-9-2 5200 San Bernardino Arrowhead Hot Springs. 579 Comment
Read comments
Dec 24 2010
  RSA92680  Eriophyllum lanatum var. obovatum F. W. Peirson 1930-7-7 9030 San Bernardino Along south edge of Holcomb Valley 2287 Comment
  RSA92841  Madia elegans subsp. wheeleri F. W. Peirson 1930-7-7 9026 San Bernardino Arrastre Flat 2287 Comment
  RSA93109  Erigeron breweri var. jacinteus F. W. Peirson 1922-7-21 3204 San Bernardino Summit of Little Baldy (the peak due east of Mt. San Antonio) 2910 Comment
  RSA93433  Brickellia oblongifolia var. linifolia F. W. Peirson 1931-7-9 9388 San Bernardino At head of Arctic Canyon 2346 Comment
  RSA93825  Aster lanceolatus subsp. hesperius F. W. Peirson 1923-8-30 4020 San Bernardino Clyde Ranch, Lone Pine Canyon. Eastern San Gabriel Mountains, west San Bernardino County 1494 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
  RSA94720  Senecio fremontii F. W. Peirson 1923-8-24 3994 San Bernardino Down southeast slope of summit of Mount San Gorgonio Peak 3476 Comment
  RSA94739  Senecio bernardinus F. W. Peirson 1933-6-24 10671 San Bernardino South side of Baldwin Lake 2057 Comment
  SBBG53804  Myosurus apetalus var. montanus F. W. Peirson 1926-5-31 San Bernardino Bluff Lake 2286 Comment
  SBBG54476  Malaxis monophyllos subsp. brachypoda F. W. Peirson 1920-8-25 San Bernardino meadows, S Fork, Santa Ana River 2438 Comment
  SBBG98214  Saltugilia splendens subsp. splendens F. W. Peirson 1924-7-16 4972 San Bernardino Barton Flats Comment
  SD87572  Aliciella leptomeria F. W. Peirson 1924-5-14 4577 San Bernardino 21 miles east of Victorville. Comment
  SD87726  Collinsia parryi Frank W. Peirson 1920-5-28 San Bernardino San Antonio Canyon 1524 Comment
  SD87866  Phacelia bicolor Frank W. Peirson 1930-5-31 8919 San Bernardino Road from Lovejoy Buttes to Adelanto Comment
  UC1199874  Dodecatheon hendersonii Peirson 1924-5-16 4599 San Bernardino 2 1/2 mi below dam (s side of Bear Lake); San Bernardino Mts., s side Bear Lake Comment
  UC218115  Hulsea vestita F. W. Peirson 1922-6-24 San Bernardino South Fork Santa Ana River; San Bernardino Mts. 1920 Comment
  UC501436  Swertia neglecta Frank W. Peirson 1930-7-7 9015 San Bernardino Arrastre Flat, toward the e end of flat San Bernardino Mts. 2255 Comment
  UC530092  Agrostis idahoensis Frank W. Peirson 1918-7-7 1576 San Bernardino Kellys Cabin San Gabriel Mts., =San Antonio Mts., Ontario Ridge (Ontario Ridge, San Gabriel Mts.) 2499 Comment
  UC632778  Fimbristylis thermalis Frank W. Peirson 1924-9-2 5200 San Bernardino Arrowhead Hot Springs; in little canyon 579 Comment
Read comments
Dec 24 2010
  UC672181  Erigeron aphanactis var. congestus Frank W. Peirson 1923-8-24 1284 San Bernardino Summit San Gorgonio Peak 3490 Comment
  UC672290  Symphyotrichum defoliatum Frank W. Peirson 1924-9-1 5165 San Bernardino east end of lake Baldwin Lake 2042 Comment
  UC813705  Ephedra nevadensis F. W. Peirson and I. M. Johnston 1922-5-14 6510 San Bernardino Summit of Pilot Knob Mohave Desert, Summit of Pilot Knob Comment
  UCD91362  Polypogon monspeliensis F. W. Peirson 1920-8-24 2274 San Bernardino East of Big Meadow, head of Santa Ana River, San Bernardino Mountains. Southern California. 2164 Comment
  UCR136639  Sidalcea hickmanii subsp. parishii F. W. Peirson 1924-7-16 4971 San Bernardino Transverse Range; San Bernardino Mtns., Barton Flats Road [probably in vicinity of Seven Oaks] 1616 Comment
  UCR142706  Hesperocnide tenella F. W. Peirson 1924-5-14 4547 San Bernardino Mojave Desert, 12 miles east of Victorville, Deadman Point 915 Comment
  UCR19610  Eriastrum sapphirinum subsp. ambiguum F. W. Peirson 1926-5-29 6735 San Bernardino Mojave Desert, east of Victorville, open desert at Deadman Point 922 Comment
  CAS-BOT-BC349731  Monoptilon bellidiforme F. W. Peirson 1926-4-27 6681 San Bernardino Near Box S Ranch, north base of San Bernardino Mts. 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-BC391195  Stellaria longipes subsp. longipes Frank W. Peirson 1922-6-24 4292 San Bernardino Ca. 1/4 mi. above South Fork Santa Ana River; San Bernardino Mts. 1935 Comment
  CAS-BOT-BC515050  Eriastrum sapphirinum subsp. sapphirinum F. W. Peirson 1929-8-23 8585 San Bernardino SW slopes of Baldwin Lake, near lot, Bear Valley 2072 Comment
  JEPS1409  Nama pusilla Frank W. Peirson 1932-5-10 9954 San Bernardino 15 mi n Baker (Mohave Desert, beds of former pools); Mohave Desert, n of Baker Comment
  JEPS66588  Chimaphila umbellata Frank W. Peirson 1924-7-14 4964 San Bernardino slope e. S. Fork Santa Ana R. (San Bernardino Mts.); San Bernardino Mts. 2743 Comment
  PASA146  Orthocarpus cinereus Frank W. Peirson 1931-7-1 San Bernardino Southwest shore of Baldwin Lake, San Bernardino Mts. 2042 Comment
  PASA1575  Syntrichopappus fremontii Frank W. Peirson 1922-5-12 San Bernardino 22 miles north of Barstow on the Granite Wells Road Comment
  PASA2664  Arabis perennans Frank W. Peirson 1930-7-8 9035 San Bernardino Fish Hatchery Creek, San Bernadino Mtns. Bear Valley 2438 Comment
  PASA397  Camelina sativa Frank W. Peirson 1922-7-7 San Bernardino Swartout Valley 1798 Comment
  POM193454  Aster ascendens F. W. Peirson 1929-9-11 8589 . San Bernardino Peter Pan Golf Course, Bear Valley, Bear Valley, San Bernardino Mts 2058 Comment
  RSA0016434  Helianthus nuttallii subsp. nuttallii F. W. Peirson 1923-8-26 3987 San Bernardino Above Mill Creek Road; San Bernardino Mountains. 1220 Comment
  RSA0020146  Bromus tectorum F. W. Peirson 1924-5-14 4543 San Bernardino 12 miles east of Victorville. Comment
  RSA0050349  Arctostaphylos patula F. W. Peirson 1930-7-7 9023 San Bernardino Arrastre Flat near Holcomb Valley, San Bernardino Mts. 2256 Comment
  RSA0079888  Carex rossii F. W. Peirson 1924-7-5 4902 San Bernardino Bluff Lake. 2286 Comment
  RSA0080461  Pyrola dentata F. W. Peirson 1922-7-18 519 San Bernardino Icehouse Canyon, San Gabriel Mountains. 2195 Comment
  RSA0117284  Collinsia parviflora F. W. Peirson 1922-6-24 3141 San Bernardino Santa Ana River at mouth of South Fork. 1921 Comment
  RSA0120396  Eriastrum eremicum subsp. eremicum F. W. Peirson 1927-7-10 7352 San Bernardino Several miles west of Mexican Well, eastern borders of San Bernardino Co. 1220 Comment
  RSA66812  Stanleya pinnata F. W. Peirson 1924-8-31 5125 San Bernardino open desert 2 miles W of Box S Ranch, North base of San Bernardino Mts 915 Comment
  RSA69662  Juncus macrophyllus F. W. Peirson 1924-9-2 5191 San Bernardino City Creek Road, San Bernardino Mountians. 1982 Comment
  RSA69709  Mentzelia obscura F. W. Peirson 1932-5-10 9956 San Bernardino 10 miles N of Baker, on road toward Death Valley. 229 Comment
  RSA69988  Mirabilis pumila F. W. Peirson 1922-8-27 3288 San Bernardino Santa Ana River 1433 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
  RSA80066  Veronica americana F. W. Peirson 1922-6-21 3133 San Bernardino Santa Ana River 1982 Comment
  RSA80230  Penstemon caesius F. W. Peirson 1920-8-22 1108 San Bernardino Foxesee Creek [Forsee Creek], San Bernardino Mountains. 2744 Comment
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Oct 8 2015
  RSA85006  Botrychium minganense F. W. Peirson 1922-7-20 3207 San Bernardino Cienega at Coldwater Fork of Lytle Creek. Eastern San Gabriel Mountains, San Bernardino Mountains. Alt. 7000 ft. 2134 Comment
  RSA90074  Lotus argophyllus var. argophyllus F. W. Peirson 1922-9-14 4692 San Bernardino Cascade Canyon, base of Ontario Peak 1296 Comment
  RSA90365  Lotus heermannii F. W. Peirson 1920-8-26 4090 San Bernardino Santa Ana River 1372 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
  RSA90689  Gutierrezia microcephala F. W. Peirson 1923-9-1 4016 San Bernardino Sheep Creek, north side of San Gabriel Mts. 1524 Comment
  RSA90694  Gutierrezia sarothrae F. W. Peirson 1924-9-1 5156 San Bernardino Open summit of Johnson Grade, eastern San Bernardino Mts 2088 Comment
  RSA90977  Erigeron breweri var. porphyreticus F. W. Peirson 1922-6-22 3100 San Bernardino Ridge W of S Fork of Santa Ana 2256 Comment
  RSA90979  Erigeron breweri var. covillei F. W. Peirson 1922-8-22 3291 San Bernardino Meadows of South Fork of Santa Ana River, San Bernardino Mountains. 2560 Comment
  RSA90996  Trifolium wormskioldii F. W. Peirson 1906-8-15 565 San Bernardino Bluff Lake, San Bernardino Mts. 2287 Comment
  RSA91137  Trifolium monanthum subsp. grantianum F. W. Peirson 1906-8-15 4070 San Bernardino Bluff Lake, San Bernardino Mts. 2287 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
  RSA91705  Gnaphalium palustre F. W. Peirson 1930-7-7 9028 San Bernardino Damp place near Caribou Creek, Holcomb Valley, San Bernardino Mts. 2256 Comment
  RSA91906  Phalaris canariensis F. W. Peirson 1922-6-20 3107 San Bernardino 4 miles east of San Bernardino. Comment
  RSA91967  Elymus elymoides subsp. californicus F. W. Peirson 1918-7-7 1603 San Bernardino Ontario Ridge, eastern San Gabriel Mountains. 2530 Comment
  RSA92128  Eleocharis palustris F. W. Peirson 1930-7-2 8976 San Bernardino North shore of Baldwin Lake, San Bernardino Mountains. 2043 Comment
  RSA92143  Scirpus acutus var. occidentalis F. W. Peirson 1924-8-31 5114 San Bernardino South of Victorville 792 Comment
  RSA92304  Poa fendleriana F. W. Peirson 1930-4-28 8756 San Bernardino SW of Baldwin Lake, San Bernardino Mts 2104 Comment
  RSA92365  Anaphalis margaritacea F. W. Peirson 1923-8-21 3978 San Bernardino Small canyon southeast of Forest Home. San Bernardino Mts. 1829 Comment
  RSA92400  Bebbia juncea F. W. Peirson 1930-4-14 8703 San Bernardino About 3 miles north of Cave Spring. Comment
  RSA92507  Filago californica F. W. Peirson 1921-5-29 2422 San Bernardino N slope of Cajon Pass. 1098 Comment
  RSA92649  Salix scouleriana F. W. Peirson 1932-5-30 9970 San Bernardino Green Valley, San Bernardino Mts., southern California. 2104 Comment
  RSA92662  Eriophyllum confertiflorum F. W. Peirson 1929-11-10 8608 San Bernardino Road fill, Johnson Grade, East end of San Bernardino Mts 1951 Comment
  RSA92714  Salix lucida subsp. lasiandra F. W. Peirson 1924-5-16 9607 San Bernardino City Creek Road from Fredalba. 1524 Comment
  RSA93070  Machaeranthera arida F. W. Peirson 1928-4-1 7758 San Bernardino Silver Lake, about 8 miles north of Baker, e. Mojave Desert. Comment
  RSA93077  Solidago confinis F. W. Peirson 1924-9-2 s.n. San Bernardino Arrowhead Hot Springs, San Bernardino Mountains. 579 Comment
  RSA93083  Solidago confinis F. W. Peirson 1920-8-24 s.n. San Bernardino Big Meadow, San Bernardino Mountains, southern California. [County not listed but most likely San Bernardino Co.] 2134 Comment
  RSA93121  Corethrogyne filaginifolia F. W. Peirson 1929-10-11 8600 San Bernardino City Creek road, 2-3miles W of Bear Lake Dam, San Bernardino Mts. 2134 Comment
  RSA93309  Aster hesperius F. W. Peirson 1926-9-5 7073 San Bernardino Rocky outcrops on shore of Lake Arrowhead 1524 Comment
  RSA93438  Brickellia microphylla F. W. Peirson 1921-12-18 2646 San Bernardino Base of Pilot Knob, Granite Wells, NW Mojave Desert Comment
  RSA93763  Baileya pleniradiata F. W. Peirson 1930-4-16 8731 San Bernardino Cima road, 8 miles S of the Las Vegas to Baker road Comment
  RSA93768  Geraea canescens F. W. Peirson 1927-5-7 7286 San Bernardino 10 miles W of Barstow Comment
  RSA93779  Lobelia cardinalis subsp. graminea F. W. Peirson 1924-9-2 5204 San Bernardino Marshes on Santa Ana River, about 2 miles south of San Bernardino. Comment
  RSA93828  Chaenactis carphoclinia var. carphoclinia F. W. Peirson 1922-5-12 2974 San Bernardino Mojave Desert. 10 miles north of Barstow. Comment
  RSA93843  Aster bernardinus F. W. Peirson 1928-9-5 8195 San Bernardino Victorville Comment
  RSA93848  Baileya pleniradiata F. W. Peirson 1916-7-8 1366 San Bernardino Box 'S' Springs near north base of San Bernardino Mtns. 1082 Comment
  RSA93872  Helenium puberulum F. W. Peirson 1923-8-26 3986 San Bernardino Above Mill Creek Road; San Bernardino Mountains. 1220 Comment
  RSA93946  Artemisia dracunculus F. W. Peirson 1920-8-22 4747 San Bernardino Ridge east of Foxesee Creek [Forsee Creek], San Bernardino Mountains. 2744 Comment
  RSA93966  Machaeranthera pinnatifida subsp. gooddingii F. W. Peirson 1935-4-10 11489 San Bernardino Rocky canyon walls, Copper Basin Creek, Whipple Mts. Comment
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Aug 9 2011
  RSA94364  Madia gracilis F. W. Peirson 1919-6-5 508 San Bernardino San Antonio Canyon, San Gabriel Mountains. 1341 Comment
  RSA94384  Dyssodia cooperi F. W. Peirson 1927-5-8 7292 San Bernardino Half way between Victorville and Barstow. Comment
  RSA94575  Artemisia biennis F. W. Peirson 1924-9-1 5160 San Bernardino North side of Baldwin Lake, San Bernardino Mountains. 2043 Comment
  RSA94600  Anisocoma acaulis F. W. Peirson 1924-5-14 4608 San Bernardino South side of Cajon Pass. 1220 Comment
  RSA94950  Tetradymia canescens F. W. Peirson 1920-9-15 1431 San Bernardino North Fork of Lytle Creek 1829 Comment
  RSA95054  Picris echioides F. W. Peirson 1920-6-22 2169 San Bernardino 2 miles south of Chino Comment
  RSA95067  Rafinesquia neomexicana F. W. Peirson 1926-4-27 6675 San Bernardino 20 miles west of Voctorville Comment
  RSA95124  Agoseris grandiflora var. grandiflora F. W. Peirson 1919-6-5 458 San Bernardino Camp Baldy, San Antonio Canyon. 1371 Comment
  RSA95157  Hieracium horridum F. W. Peirson 1920-8-22 2343 San Bernardino Foxesee Creek [Forsee Creek], San Bernardino Mountains 2743 Comment
  RSA95207  Stephanomeria exigua subsp. exigua F. W. Peirson 1927-7-10 7351 San Bernardino Several miles west of Mexican Well, eastern borders of San Bernardino Co. 1220 Comment
  RSA97383  Lomatium nevadense var. parishii F. W. Peirson 1920-5-19 2679 San Bernardino Coldwater Canyon, fork of Lytle Creek, San Gabriel Mountains 1677 Comment
  RSA97385  Cicuta bolanderi F. W. Peirson 1924-9-2 5205 San Bernardino Santa Ana River Marshes, 2 miles south of San Bernardino. 305 Comment
  RSA97414  Tauschia parishii F. W. Peirson 1930-7-5 9009 San Bernardino Road from Bear Lake to Holcomb Valley, San Bernardino Mts. 2133 Comment
  CAS-BOT-BC232913  Saltugilia caruifolia Frank W. Peirson 1920-6-24 2295 San Diego Palomar, E trail from Oak Grove 1676 Comment
  CAS-BOT-BC253320  Eriogonum fasciculatum var. foliolosum Frank W. Peirson 1925-5-27 5956 San Diego Vallecito Canyon, Laguna Mts. Comment
  CAS-BOT-BC30916  Adenophyllum porophylloides Frank Warrington Peirson 1928-4-20 7855 San Diego San Felipe Creek foot of Sentenac Canyon 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
  CAS-BOT-BC407815  Gilia ochroleuca subsp. exilis F. W. Peirson 1929-5-4 8342 San Diego About 5 miles N of Oak Grove 762 Comment
  CAS-BOT-BC63208  Ceanothus tomentosus var. olivaceus Frank W. Peirson 1929-3-30 8276 San Diego Grade n. of Pala. 304 Comment
  CAS-BOT-BC9457  Mimulus diffusus Frank Warrington Peirson 1925-5-15 5919 San Diego Laguna Lakes, Laguna Mtns. 1676 Comment
  JEPS42340  Ceanothus oliganthus var. oliganthus Frank W. Peirson 1926-5-1 6711 San Diego East trail Palomar Mt. Comment
  JEPS4398  Trifolium willdenovii Frank W. Peirson 1925-5-18 5971 San Diego n shore lake; Cyamaca Lake 1706 Comment
  JEPS51095  Stellaria nitens Frank W. Peirson 1925-5-15 5923 San Diego Laguna Lakes Camp; Laguna Mts. Comment
  JEPS56349  Allium amplectens Frank W. Peirson 1925-5-18 5986 San Diego near w end of Cuyamaca Lake Cuyamaca Lake 1402 Comment
  JEPS60570  Clematis pauciflora F. Peirson 1927-4-17 11826 San Diego near summit of rocky peak south Summit Mt. Springs grade 914 Comment
  JEPS75366  Trifolium willdenovii Frank W. Peirson 1925-5-18 5971 San Diego along n shore Cuyamaca Lake 1402 Comment
  PASA1144  Monardella nana Frank W. Peirson 1924-6-25 San Diego Near Laguna Lakes Auto Camp, Laguna Mts. Comment
  PASA1281  Spergularia clevelandii Frank W. Peirson 1922-4-14 San Diego Roadside near La Jolla Comment
  PASA1520  Viola douglasii Frank W. Peirson 1925-5-15 San Diego Laguna Lakes Auto Camp, Laguna Mts. 1828 Comment
  PASA1773  Horsfordia newberryi Frank W. Peirson 1928-4-22 San Diego San Felipe Creek, 2 miles below the Sentenac Comment
  PASA1976  Cryptantha barbigera Frank W. Peirson 1925-5-15 San Diego Summit Mountain Springs Grade 1066 Comment
  PASA2051  Lyrocarpa coulteri Frank W. Peirson 1928-3-24 San Diego San Felipe Creek, 2 miles below Sentenac Canyon Comment
  PASA2533  Delphinium parryi Frank W. Peirson 1923-3-27 San Diego Imperial Beach Comment
  RSA411399  Salvia clevelandii F. W. Peirson 1924-6-24 4822 San Diego South slope of Palomar Mountains 1067 Comment
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Apr 29 2008
  RSA499265  Rosa gymnocarpa F. W. Peirson 1924-6-22 s.n. San Diego Doane Valley. 1494 Comment
  RSA65059  Silene verecunda subsp. platyota F. W. Peirson 1924-6-22 4783 San Diego near Country Club, Palomar Mts. 1616 Comment
  RSA65173  Chorizanthe fimbriata var. fimbriata F. W. Peirson 1924-6-21 4763 San Diego Grade north of Pala. 229 Comment
  RSA66096  Lyrocarpa coulteri var. palmeri F. W. Peirson 1928-3-24 7749 San Diego San Felipe Creek, 2 miles below Sentenac Canyon, eastern SD county. Comment
  RSA66284  Dendromecon rigida F. W. Peirson 1922-4-14 4174 San Diego Torrey Pines Park near San Diego Comment
  RSA66712  Streptanthus bernardinus F. W. Peirson 1924-6-25 4837 San Diego Laguna Lakes 1829 Comment
  RSA66819  Caulanthus cooperi F. W. Peirson 1928-4-20 7862 San Diego 2 miles S of San Felipe Creek, near mouth of Sentenac Canyon, Eastern San Diego County. Comment
  RSA68657  Zigadenus venenosus var. venenosus Frank W. Peirson 1925-5-18 5989 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains 1402 Comment
  RSA68768  Delphinium cardinale F. W. Peirson 1924-6-22 s.n. San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA69500  Mirabilis laevis var. crassifolia F. W. Peirson 1922-4-14 5219 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  RSA70058  Juncus bufonius var. occidentalis F. W. Peirson 1923-3-27 3362 San Diego Imperial Beach. Comment
  RSA70168  Bloomeria crocea var. crocea F. W. Peirson 1924-6-22 4798 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA70328  Asclepias eriocarpa F. W. Peirson 1924-6-24 4816 San Diego Henshaw Grade, south slope of Palomar Mts. 1524 Comment
  RSA71816  Saltugilia australis F. W. Peirson 1929-5-4 8343 San Diego About 5 miles N of Oak Grove. 762 Comment
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May 10 2017
  RSA72310  Gilia diegensis F. W. Peirson 1925-5-16 5930 San Diego About 1 mile north of Laguna Lakes camp, Laguna Mouintains. Comment
  RSA73043  Leptosiphon androsaceus F. W. Peirson 1922-4-14 2878 San Diego South slope; Point Loma, San Diego Co., California Comment
  RSA73358  Clarkia rhomboidea F. W. Peirson 1924-6-22 4784 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA73676  Leptosiphon floribundus subsp. floribundus F. W. Peirson 1924-6-25 4842 San Diego Laguna Lakes, Laguna Mountains. 1829 Comment
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Feb 3 2012
  RSA74952  Phacelia distans F. W. Peirson 1923-3-26 3384 San Diego Agua Hedionda Comment
  RSA75513  Phacelia affinis F. W. Peirson 1925-5-15 5906 San Diego 4 mi. south of Buckman Springs, eastern San Diego Co. Comment
  RSA76781  Saltugilia caruifolia F. W. Peirson 1920-6-24 2295 San Diego Trail from Oak Grove to Palomar Mountain 1677 Comment
  RSA76956  Stillingia linearifolia F. W. Peirson 1925-5-20 6009 San Diego About 2 miles north of Oak Grove, San Diego. Comment
  RSA77227  Ayenia compacta F. W. Peirson 1928-4-22 7883 San Diego steep rocky canyon immediately west of the Narrows, San Felipe Creek. Comment
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Nov 21 2011
  RSA77240  Eriodictyon crassifolium F. W. Peirson 1923-3-26 3383 San Diego 0.5 mile north of Encinitas. Comment
  RSA77702  Ceanothus palmeri F. W. Peirson 1920-6-24 4193 San Diego West of summit of Mt. Palomar, [Palomar Mountains]. 1677 Comment
  RSA77709  Ceanothus greggii var. perplexans F. W. Peirson 1924-6-26 4870 San Diego About half way down Vallecinto Canyon Comment
  RSA77741  Viola nephrophylla F. W. Peirson 1925-5-19 6001 San Diego along stream between Middle Peak and South Peak. 1524 Comment
  RSA80002  Amsinckia spectabilis F. W. Peirson 1923-3-26 4056 San Diego Saline flat back of beach, Agua Hedionda. Comment
  RSA80177  Antirrhinum nuttallianum subsp. nuttallianum F. W. Peirson 1923-3-26 3415 San Diego Agua Hedionda Comment
  RSA80185  Antirrhinum coulterianum F. W. Peirson 1924-6-22 4788 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA80388  Solanum umbelliferum F. W. Peirson 1926-5-1 6720 San Diego Bottom lands of temecula River, Oak grove. 854 Comment
  RSA80654  Hypericum androsaemum F. W. Peirson 1924-6-22 4774 San Diego Country Club, Palomar Mts. Comment
  RSA81471  Castilleja applegatei subsp. martinii F. W. Peirson 1920-6-24 2174 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA83926  Ranunculus californicus F. W. Peirson 1924-6-22 4794 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA84515  Ribes indecorum F. W. Peirson 1929-3-30 8278 San Diego south slope near summit of grade, north of Pala 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
  RSA85200  Horkelia cuneata subsp. puberula F. W. Peirson 1926-4-30 6694 San Diego About 1 mile from Pala on the road to Henshaw Dam Comment
  RSA85554  Cheilanthes clevelandii F. W. Peirson 1979-5-24 8347 San Diego along central part of trail from Oak Grove to Palomar Mt. Comment
  RSA85950  Pentagramma triangularis subsp. viscosa F. W. Peirson 1922-4-14 2888 San Diego Torrey Pines Park, near La Jolla. Comment
  RSA86662  Coleogyne ramosissima F. W. Peirson 1928-4-20 7846 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA86675  Cercocarpus betuloides F. W. Peirson 1924-6-25 4861 San Diego Top of ridge back of public camp, Laguna Lakes, Laguna Mountains Comment
  RSA87014  Thermopsis californica var. semota F. W. Peirson 1925-5-18 5979 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains. 1402 Comment
  RSA87086  Lupinus concinnus subsp. orcuttii F. W. Peirson 1922-4-13 2907 San Diego Mountain Springs grade east of Jacumba; eastern San Diego 1067 Comment
  RSA87218  Lupinus excubitus var. medius F. W. Peirson 1922-4-13 2901 San Diego Mountain Springs grade east of Jacumba; eastern San Diego 1067 Comment
  RSA91724  Gastridium phleoides F. W. Peirson 1926-4-30 6700 San Diego About 2 miles east from Pala on the road to Henshaw Dam Comment
  SD87560  Linanthus orcuttii Frank W. Peirson 1920-6-24 2173 San Diego Ridge westward from Palomar Peak (IPB 2/06) 1431 Comment
  SD87622  Ipomopsis tenuifolia Frank W. Peirson 1927-4-17 7222 San Diego Boulevard; summit of Mountain Springs Grade, among rocks on very rocky hill to the north of Boulevard Comment
  SD87662  Potentilla gracilis var. fastigiata F. W. Peirson 1924-6-22 4805 San Diego Doane Valley, Palomar Mts. (IPB 8/06) 1490 Comment
  SD87700  Galium andrewsii subsp. andrewsii F. W. Peirson 1920-6-24 San Diego Palomar, East Trail (IPB 9/06) 1520 Comment
  SD87750  Stebbinsoseris heterocarpa Frank W. Peirson 1927-4-19 7255 San Diego Headland south of Torrey Pines. Comment
  SD87763  Downingia cuspidata F. W. Peirson 1923-3-28 3394 San Diego Mesa, 6.0 miles north of San Diego. 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
  UC1076255  Moehringia macrophylla Frank W. Peirson 1925-5-19 6000 San Diego Middle Peak , Middle Peak (Cuyamaca Mts.) 1615 Comment
  UC501461  Sidalcea malviflora subsp. sparsifolia Frank W. Peirson 1924-6-25 4847 San Diego 1/2 mi above Auto Camp (Laguna Mts.); , Laguna Lake Region 1676 Comment
  UC635227  Brodiaea terrestris subsp. kernensis Frank W. Peirson 1924-6-25 4834 San Diego near Little Lake; Laguna Mts. 1828 Comment
  UC635630  Limnanthes gracilis subsp. parishii Frank W. Peirson 1925-5-15 5921 San Diego Laguna Lakes Camp Laguna Mts. Comment
  UC643227  Boerhavia triquetra Mabel B. Peirson 1939-11-25 12900 San Diego s. side San Felipe Canyon (immediately w. of the Narrows) Comment
  UC673514  Zigadenus venenosus var. venenosus Frank W. Peirson 1925-5-18 5989 San Diego along n shore Cuyamaca Lake 1402 Comment
  UC908600  Linanthus Frank W. Peirson 1925-5-15 5924 San Diego Laguna Lakes Camp Laguna Mts. 1828 Comment
  UCR136630  Sidalcea malviflora F. W. Peirson 1927-4-19 7237 San Diego South Coast, headland south of Torrey Pines 91 Comment
  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
  CAS-BOT-BC515148  Eriastrum sapphirinum subsp. sapphirinum F. W. Peirson 1920-6-23 2299 San Diego Oak Grove 1158 Comment
  POM9920  Petunia parviflora F. W. Peirson 1920-6-25 2207 San Diego San Luis Rey. 915 Comment
  RSA0020653  Bahiopsis laciniata F. W. Peirson 1923-3-26 3364 San Diego 4 miles south of San Onofre Comment
  RSA0029735  Delphinium hesperium subsp. cuyamacae F. W. Peirson 1924-6-23 4809 San Diego Palomar. French Valley 1524 Comment
  RSA0034571  Monardella nana subsp. nana F. W. Peirson 1924-6-25 4848 San Diego Laguna Mountains, Laguna Lakes region. Comment
  RSA0075945  Heterotheca sessiliflora F. W. Peirson 1923-3-27 3368 San Diego Along back side of low sand dunes, Imperial Beach. Comment
  RSA0105822  Eriastrum densifolium subsp. austromontanum F. W. Peirson 1924-6-24 4815 San Diego Henshaw Grade, south slope of Palomar Mts., near summit. Comment
  RSA90229  Astragalus douglasii F. W. Peirson 1924-6-22 4799 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA90333  Lotus rigidus F. W. Peirson 1928-3-24 7733 San Diego San Felipe Creek, Sentenac Canyon, eastern San Diego Co. Comment
  RSA90639  Astragalus palmeri F. W. Peirson 1925-5-17 5946 San Diego Vallecito Canyon, east slope of Laguna Mts., eastern San Diego county. Lower canyon bordering desert area. Comment
  RSA90707  Astragalus trichopodus var. lonchus F. W. Peirson 1927-4-19 7253 San Diego Headland South of Torrey Pines Comment
  RSA90855  Carex triquetra F. W. Peirson 1926-4-30 6698 San Diego Bushy slope about 2 miles east of Pala. Comment
  RSA91059  Trifolium depauperatum var. truncatum F. W. Peirson 1925-5-18 5972 San Diego North shore of Cuyamaca Lake. 1402 Comment
  RSA91129  Trifolium microcephalum F. W. Peirson 1925-3-18 5970 San Diego North shore of Cuyamaca Lake, eastern San Diego County 1402 Comment
  RSA91277  Isocoma menziesii var. vernonioides F. W. Peirson 1932-9-4 10457 San Diego 3 miles east of Chula Vista. 76 Comment
  RSA91315  Lupinus longifolius F. W. Peirson 1923-3-28 3402 San Diego Buena vista Creek near Vista 107 Comment
  RSA91329  Hoita orbicularis F. W. Peirson 1924-6-22 4793 San Diego Near the Country Club, Palomar Mountains. 1585 Comment
  RSA91484  Isolepis cernua F. W. Peirson 1924-6-26 4871 San Diego Lower part of Vallecito Canyon Comment
  RSA91696  Gnaphalium palustre F. W. Peirson 1920-6-25 2493 San Diego from Oak Grove to Warners Hot Springs. 915 Comment
  RSA92104  Cyperus squarrosus F. W. Peirson 1920-6-22 2684 San Diego East foot of Morgan Hill, Palomar Mountains 1433 Comment
  RSA92232  Madia minima F. W. Peirson 1925-5-15 5926 San Diego Laguna Lakes, Laguna Mountains 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
  RSA92372  Eriophyllum wallacei F. W. Peirson 1925-5-17 5951 San Diego Lower part of Vallecito Canyon. Comment
  RSA92500  Stylocline gnaphaloides F. W. Peirson 1922-2-14 2855 San Diego Torrey Pines Comment
  RSA93035  Grindelia hirsutula var. hallii F. W. Peirson 1924-6-24 4825 San Diego Dam at Cuyamaca Lake 1402 Comment
  RSA93102  Corethrogyne filaginifolia F. W. Peirson 1932-9-4 10468 San Diego 4 miles west of Campo 671 Comment
  RSA93804  Chaenactis glabriuscula var. glabriuscula F. W. Peirson 1924-6-25 4833 San Diego Laguna Lakes Region, Laguna Mountains. Comment
  RSA93896  Encelia actoni F. W. Peirson 1925-5-15 5887 San Diego Summit of Mtn Springs Grade, East of Jacumba Comment
  RSA93953  Hymenoclea salsola F. W. Peirson 1925-5-15 5891 San Diego Summit of Mtn Springs Grade, East of Jacumba Comment
  RSA93955  Hymenoclea salsola F. W. Peirson 1927-4-17 7232 San Diego Summit of Mountain Springs Grade. Comment
  RSA94666  Senecio douglasii var. monoensis F. W. Peirson 1925-5-15 5894 San Diego 3 miles northwest of Jacumba, eastern San Diego County Comment
  RSA94839  Senecio aphanactis F. W. Peirson 1951-1 3358 San Diego 6 miles north of San Diuego on Escondido Road Comment
  RSA95006  Malacothrix glabrata F. W. Peirson 1928-4-20 8662 San Diego Borrego Valley, 1 mile E of entrance to Palm Canyon Park, Colorado Desert. 76 Comment
  RSA97351  Sanicula arguta F. W. Peirson 1922-4-14 2891 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  SEINET10460633  Heterocodon rariflorum Frank W. Peirson 1920-6-22 Peirson 4065 San Diego MEADOW AT E FOOT OF MORGAN HILL, PALOMAR MTS 4700 Comment
  SEINET10461006  Nemacladus pinnatifidus Frank W. Peirson 1925-5-15 Peirson 5899 b San Diego 4 miles south of Buckman Springs; on burnt-over hill slope Comment
  SEINET10972604  Nemacladus longiflorus Frank W. Peirson Peirson 5900 San Diego 4 miles south of Buckman Springs Comment
  SEINET8003290  Myrica californica Frank W. Peirson 1938-4-13 No determinado San Diego Santa Barbara, Santa Barbara California Comment
  PASA2768  Stellariopsis santolinoides F. W. Peirson 1921-7-3 Y 61 San Francisco Merced Lake trail Comment
  CAS-BOT-BC435385  Lithophragma cymbalaria Frank W. Peirson 1925-3-25 5689 San Luis Obispo Pismo Creek 30 Comment
  POM20532  Hemizonia increscens F. W. Peirson 1923-6-26 s.n. San Luis Obispo Arroyo Grande. Comment
  RSA63736  Fritillaria viridea Frank W. Peirson 1925-3-25 5674 San Luis Obispo Morro Creek 366 Comment
  RSA68690  Muilla maritima F. W. Peirson 1925-3-25 5693 San Luis Obispo Pismo Creek. 30 Comment
  RSA82581  Stachys ajugoides F. W. Peirson 1940-4-20 s.n. San Luis Obispo Cambria Pines. Comment
  RSA82985  Stachys bullata F. W. Peirson 1925-3-25 5676 San Luis Obispo Morro Creek. 152 Comment
  RSA87229  Lupinus variicolor F. W. Peirson 1920-7-31 2228 San Luis Obispo Morro Bay Comment
  RSA88861  Carex praegracilis F. W. Peirson 1925-3-25 5677 San Luis Obispo Morro. Comment
  UC672063  Trillium angustipetalum Frank W. Peirson 1925-3-25 5690 San Luis Obispo Pismo Creek 30 Comment
  UCR136642  Agrostis viridis F. W. Peirson 1932-7-4 10239 San Luis Obispo Central Coast, Oceano 3 Comment
  RSA114698  Lomatium caruifolium F. W. Peirson 1925-3-20 5685 San Luis Obispo Between Morro and San Luis Comment
  RSA64597  Eriogonum parvifolium var. parvifolium F. W. Peirson 1920-7-30 2323 San Luis Obispo Near Willow Creek, Morro region Comment
  RSA91716  Gnaphalium ramosissimum F. W. Peirson 1920-7-29 2220 San Luis Obispo 1 mile S of Pismo Beach. Comment
  RSA92165  Schoenoplectus californicus F. W. Peirson 1920-7-29 4272 San Luis Obispo 1 mile south of Pismo Beach. Comment
  RSA92618  Salix lasiolepis var. bigelovii F. W. Peirson 1925-3-25 9606 San Luis Obispo Morro. Comment
  RSA94199  Hemizonia increscens F. W. Peirson, Mabel Peirson 1920-7-31 2233 San Luis Obispo Near Morro Bay. Comment
  RSA76963  Oxalis pes-caprae Mabel Peirson 1926-2-24 8218 San Mateo South of Colma Comment
  RSA93926  Ambrosia chamissonis var. chamissonis F. W. Peirson 1925-9-13 6427 San Mateo Rockaway beach. Comment
  CAS-BOT-BC196211  Lupinus albifrons var. douglasii Frank W. Peirson 1929-5-18 8382 Santa Barbara Miguelito Park, 4 miles s. of Lompoc 121 Comment
  CAS-BOT-BC346763  Lasthenia californica Mabel B. Peirson 1927-4-14 7145 Santa Barbara Santa Barbara, terrace 100 ft. above the sea; Prisoners Cove, Santa Cruz Island 30 Comment
  JEPS59996  Cheilanthes clevelandii Mabel Peirson Apr 12 1927-Apr 14 1927 Santa Barbara Lady's Harbor; Santa Cruz Isl Comment
  PASA1108  Lotus scoparius Frank W. Peirson 1929-5-17 Santa Barbara Surf Comment
  POM128751  Pholistoma racemosum Mabel Peirson 1927-4-14 7146 Santa Barbara Santa Cruz Island. Prisoners Cove. Comment
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Dec 30 2014
  POM180080  Orthocarpus densiflorus var. gracilis Mabel Peirson 1927-4-14 7148 Santa Barbara Santa Cruz Island. Prisoners Cove. Comment
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Dec 30 2014
  RSA498655  Lotus scoparius F. W. Peirson 1929-5-17 s.n. Santa Barbara Seaward face of sand dunes, flat ground near railroad track, Surf. Comment
  RSA498853  Lotus scoparius F. W. Peirson 1929-5-17 8369 Santa Barbara Seaward face of sand dunes, flat ground near railroad track, Surf. Comment
  RSA66161  Erysimum suffrutescens F. W. Peirson 1929-4-20 8312 Santa Barbara Surf. Comment
  RSA71106  Calystegia macrostegia subsp. macrostegia F. W. Peirson 1934-3-25 11022 Santa Barbara Santa Cruz island, Frye's harbor. Comment
  RSA74157  Phacelia viscida var. albiflora F. W. Peirson 1929-4-20 8293 Santa Barbara El Capitan Auto Camp, Northwest of Santa Barbara County. Comment
  RSA74916  Phacelia imbricata F. W. Peirson 1929-5-18 8386 Santa Barbara Miguelito Park, 4 miles south of Lompoc. 122 Comment
  RSA76036  Pholistoma racemosum F. W. Peirson 1934-3-26 11056 Santa Barbara Santa Cruz Island. Frye's Harbor. Comment
  RSA77148  Ceanothus arboreus Mabel Peirson 1927-4-14 7128 Santa Barbara Prisoner's Cove, Santa Cruz Island, on terrace about 1 mile west of pier. Comment
  RSA79888  Solanum umbelliferum F. W. Peirson 1938-4-13 12386 Santa Barbara At Surf, Santa Barbara County Comment
  RSA80183  Antirrhinum nuttallianum subsp. subsessile F. W. Peirson 1934-3-26 11096 Santa Barbara Santa Cruz Island. Open headland Prisoners Cove Comment
  RSA80338  Orthocarpus densiflorus var. gracilis F. W. Peirson 1927-4-14 7148 Santa Barbara Prisoners Cove, Santa Cruz Island Comment
  RSA82232  Castilleja affinis F. W. Peirson 1929-4-20 8305 Santa Barbara Surf. Comment
  RSA82365  Scutellaria tuberosa Mabel Peirson 1934-3-26 11097 Santa Barbara Santa Cruz Island. Prisoners Cove. Comment
  RSA84957  Ribes speciosum F. W. Peirson 1925-3-26 5710 Santa Barbara Side canyon at Gaviota Pass. 183 Comment
  RSA85060  Adenostoma fasciculatum var. fasciculatum Mabel Peirson 1934-3-26 11099 Santa Barbara Santa Cruz Island. Prisoners Cove. Comment
  RSA86348  Pinus muricata Mabel Peirson 1927-4-12 7261 Santa Barbara Santa Cruz Island. Comment
  RSA87151  Quercus douglasii F. W. Peirson 1927-4-14 7142 Santa Barbara Prisoners Cove, Santa Cruz Island Comment
  SBBG51865  Chorizanthe angustifolia F. W. Peirson 1929-4-20 Santa Barbara Surf Comment
  SBBG97362  Acmispon strigosus F. W. Peirson 1934-3-28 Santa Barbara Diablo Cyn, ca. 1 mi W of Frys Harbor Comment
  UC599193  Cryptantha leiocarpa Frank W. Peirson 1938-4-13 Santa Barbara Surf Comment
  UC599195  Ribes divaricatum Frank W. Peirson 1938-4-13 12384 Santa Barbara Bear Creek is about two miles south of Surf and station 1/2 mile up stream Comment
  PASA2234  Lithophragma cymbalaria Frank W. Peirson 1934-3-26 Santa Barbara Santa Cruz Island Comment
  RSA0057562  Thysanocarpus curvipes var. elegans F. W. Peirson 1929-4-20 8316 Santa Barbara About 2 miles from Surf on the road to Lompoc. Comment
  RSA0091053  Amsinckia spectabilis var. microcarpa F. W. Peirson 1929-4-20 8299 Santa Barbara La Purissima Mission, north of Lompoc. Comment
  RSA458864  Clarkia bottae F. W. Peirson 1929-5-18 8394 Santa Barbara Cuyama Valley Road, 13 miles east of Coast Boulevard. Comment
  RSA66109  Cardamine californica var. integrifolia Mabel Peirson 1927-4-12 7134 Santa Barbara Lady s Harbor, Santa Cruz Island Comment
  RSA66533  Athysanus pusillus F. W. Peirson 1927-4-12 7137 Santa Barbara Santa Cruz Island. Lady's Harbor, Comment
  RSA70240  Allium peninsulare var. peninsulare F. W. Peirson 1929-5-18 8398 Santa Barbara Cuyama Valley Road, 30 miles east of the Coast Boulevard. Comment
  RSA70553  Euphorbia peplus F. W. Peirson 1934-3-25 11046 Santa Barbara Santa Cruz Island. In low land back of inlet. Frye's Harbor . Comment
  RSA79443  Collinsia bartsiifolia F. W. Peirson 1929-4-20 8315 Santa Barbara About 2 miles from Surf on the road to Lompoc. Comment
  RSA80310  Orthocarpus densiflorus F. W. Peirson 1929-5-18 8390 Santa Barbara 10 miles east of Lompoc on road to Buellton. 152 Comment
  RSA82566  Stachys albens F. W. Peirson 1938-4-13 12380 Santa Barbara at summit of Point Pederales. at 146 ft. 45 Comment
  RSA84911  Crassula connata var. erectoides F. W. Peirson 1934-3-25 11024 Santa Barbara West of canyon to Frye's Harbor, Santa Cruz Island. 61 Comment
  RSA84990  Ruppia cirrhosa F. W. Peirson 1920-7-28 2836 Santa Barbara Canada del Refugio, at sea level. 0 Comment
  RSA85203A  Horkelia cuneata F. W. Peirson 1929-5-17 8380 Santa Barbara South of Bear Creek, 2 miles south of Surf Comment
  RSA85869  Fragaria californica F. W. Peirson 1929-4-20 8326 Santa Barbara 2-3 miles west of Las Cruces Bench Mark 283 Comment
  RSA87110  Galium nuttallii F. W. Peirson 1934-3-25 11034 Santa Barbara Santa Cruz Island. Summit of ridge west of Frye's Harbor Canyon 244 Comment
  RSA90201  Alopecurus saccatus F. W. Peirson 1925-3-26 5706 Santa Barbara Between La Purisima Mission and Buellton. 152 Comment
  RSA90273  Polypogon viridis F. W. Peirson 1929-4-20 8292 Santa Barbara El Capitan on coast of Santa Barbara County. West of Goleta. Comment
  RSA90310  Lotus salsuginosus F. W. Peirson 1925-3-27 5720 Santa Barbara hills back of Santa Barbara 152 Comment
  RSA90335  Lotus scoparius F. W. Peirson 1929-5-17 8369 Santa Barbara Seaward face of sand dunes, flat ground near railroad track, Surf. Comment
  RSA90642  Hazardia detonsa Mabel Peirson 1927-4-12 7132 Santa Barbara Santa Cruz Island. Lady's Harbor. 152 Comment
  RSA94820  Hypochaeris glabra F. W. Peirson 1934-3-25 11031 Santa Barbara Santa Cruz Island. West of canyon at Frye's Harbor, Comment
  RSA95020  Malacothrix saxatilis var. saxatilis F. W. Peirson 1920-7-28 2240 Santa Barbara Canada del Refugio. 0 Comment
  RSA95364  Ceanothus megacarpus F. W. Peirson 1925-3-27 5721 Santa Barbara hills back of Santa Barbara 152 Comment
  SD87586  Lasthenia californica Frank W. Peirson 1929-4-20 8309 Santa Barbara Tops of sand dunes. Comment
  POM47638  Viola ocellata F. W. Peirson 1923-6-28 3781 Santa Cruz West slope of Santa Cruz Mts. Comment
  RSA66488  Eschscholzia californica subsp. californica F. W. Peirson 1912-6-28 1887 Santa Cruz Santa Cruz. Comment
  RSA87436  Lupinus arboreus var. arboreus F. W. Peirson 1935-5-25 12374 Santa Cruz 1-2 miles south of Watsonville. Comment
  RSA90421  Lotus micranthus F. W. Peirson 1923-7-29 3606 Santa Cruz Slightly east of summit on road from Santa Cruz to Los Gatos. Comment
  RSA91330  Hoita orbicularis F. W. Peirson 1912-6-29 711 Santa Cruz Santa Cruz Mts. Comment
  RSA91764  Adenocaulon bicolor F. W. Peirson 1925-8-4 6326 Santa Cruz 1 mile from Boulder Comment
  RSA92886  Populus fremontii subsp. fremontii F. W. Peirson 1912-6-28 s.n. Santa Cruz Santa Cruz. Comment
  CAS-BOT-BC334664  Madia glomerata F. W. Peirson 1932-7-9 10297 Shasta Burney Springs 1432 Comment
  JEPS61031  Plagiobothrys hispidulus Frank W. Peirson 1932-7-9 10290 a Shasta Burney Spring 1432 Comment
  LA96476  Mimulus nanus var. mephiticus Frank W. Peirson; 1932-7-16 10309 Shasta Burney Spring 1432 Comment
  POM259435  Agrostis exarata F. W. Peirson 1932-7-17 s.n. Shasta Wallace Ranch, Goose Valley. 915 Comment
  RSA65115  Eriogonum marifolium F. W. Peirson 1932-7-13 10140 Shasta Thousand-Lake region 1951 Comment
  RSA70304  Juncus orthophyllus F. W. Peirson 1932-7-13 10123 Shasta Thousand-Lake Basin 1951 Comment
  RSA71949  Collomia grandiflora F. W. Peirson 1932-7-16 10308 Shasta Burney Spring 1433 Comment
  RSA80481  Mimulus primuloides F. W. Peirson 1932-7-12 10211 Shasta Along shore of Lake Eiler. Thousand-Lake Basin. 1951 Comment
  RSA87461  Melica bulbosa var. inflata F. W. Peirson 1932-7-9 10267 Shasta Burney Spring. 1433 Comment
  SD87666  Arenaria congesta Frank W. Peirson 1932-7-11 10145 Shasta South of Burney, 1000-Lake Basin. 1950 Comment
  SD87768  Lonicera conjugialis Frank W. Peirson 1932-7-12 10223 Shasta One Thousand Lake Basin; along the shore of Lake Eiler. 1950 Comment
  UC501474  Gayophytum humile Frank W. Peirson 1932-7-14 10188 Shasta open stream depression n Lake Eiler (s of Burney); 1000-Lake Basin 1950 Comment
  UC501561  Melica bulbosa Frank W. Peirson 1932-7-9 10267 Shasta meadow below Burney Spring 1432 Comment
  UC501606  Rhamnus rubra Frank W. Peirson 1932-7-13 10179 Shasta s of Burney; 1000-Lake Basin 1950 Comment
  RSA66017  Eriogonum nudum var. pubiflorum F. W. Peirson 1932-7-18 10341 Shasta Rocky Camp' on Hat Creek 1159 Comment
  RSA68712  Lilium washingtonianum Frank W. Peirson 1932-7-16 10126 Shasta Trail to Thousand-Lake Basin 1921 Comment
  RSA68719  Fritillaria atropurpurea Frank W. Peirson 10125 Shasta Thousand-Lake Basin 1951 Comment
  RSA69714  Mentzelia dispersa F. W. Peirson 1932-7-9 10275 Shasta Burney Spring. 1433 Comment
  RSA69935  Apocynum androsaemifolium subsp. pumilum F. W. Peirson 1932-7-12 10198 Shasta Thousand Lake Basin, along rim of Red Crater 2012 Comment
  RSA71915  Gilia capitata F. W. Peirson 1932-7-17 10328 Shasta Wallace Ranch, Goose Valley 915 Comment
  RSA72151  Gayophytum humile F. W. Peirson 1932-7-14 10188 Shasta Thousand-Lake Basin. 1951 Comment
  RSA72632  Wyethia mollis F. W. Peirson 1932-7-15 10232 Shasta Below camp, Thousand Lake Basin. 1951 Comment
  RSA73355  Clarkia rhomboidea F. W. Peirson 1932-7-9 10281 Shasta Burney Spring. 1433 Comment
  RSA77498  Angelica californica F. W. Peirson 1932-7-17 10334 Shasta moist shaded places, Wallace Ranch, Goose Velley. 915 Comment
  RSA79465  Collinsia torreyi F. W. Peirson 1932-7-12 10209 Shasta Along rim of Red Crater. Thousand Lake Basin. Sierra Nevada. 2012 Comment
  RSA80074  Mimulus torreyi F. W. Peirson 1932-7-9 10293 Shasta Burney Spring. 1433 Comment
  RSA80215  Plagiobothrys hispidus F. W. Peirson 1932-7-16 10315 Shasta Burney Spring. Forest Border near old log cabin Comment
  RSA80218  Plagiobothrys scouleri var. hispidulus F. W. Peirson 1932-7-9 10290 Shasta Below Burney Spring. 1433 Comment
  RSA80333  Orthocarpus hispidus F. W. Peirson 1932-7-17 10333 Shasta Wallace Ranch, Goose Velley. 915 Comment
  RSA82319  Scutellaria antirrhinoides F. W. Peirson 1932-7-17 10327 Shasta Wallace Ranch, Goose Valley. 915 Comment
  RSA87185  Lupinus angustiflorus F. W. Peirson 1932-7-19 10344 Shasta Mt. Lassen, Mt. Lassen National Park. 1829 Comment
  RSA87213  Lupinus albicaulis var. shastensis F. W. Peirson 1932-7-16 10310 Shasta Burney Spring 1433 Comment
  RSA91452  Trifolium longipes subsp. elmeri F. W. Peirson 1932-7-12 10176 Shasta Thousand-Lake Basin. 1951 Comment
  RSA91648  Carex vesicaria F. W. Peirson 1932-7-10 10116 Shasta Margin of Lake Eiler, Thousand-Lake Basin. 1951 Comment
  RSA91668  Achnatherum occidentale subsp. californicum F. W. Peirson 1932-7-9 10265 Shasta Below Burney Spring 1433 Comment
  RSA93186  Erigeron inornatus var. inornatus F. W. Peirson 1932-7-17 10336 Shasta Wallace Ranch, Goose Valley. 915 Comment
  RSA93796  Chaenactis douglasii var. douglasii F. W. Peirson 1932-7-12 10233 Shasta Slopes of Red Crater, Thousand-Lake Basin 1951 Comment
  RSA95258  Sidalcea oregana subsp. spicata F. W. Peirson 1932-7-17 10323 Shasta Wallace Ranch, Goose Valley 915 Comment
  SEINET10972517  Heterocodon rariflorum Frank W. Peirson 1932-7-17 Peirson 10332 Shasta WET PLACES AT BORDER OF MARSHY FIELD, WALLACE R., GOOSE VALLEY Comment
  SEINET3836450 Image available Eriogonum baileyi var. baileyi Frank W. Peirson 1934-7-8 Shasta Whiskey Creek Comment
  RSA85539  Cheilanthes gracillima F. W. Peirson 1914-08 1505 Sierra Devils Post Pile Comment
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Jul 4 2012
  CAS-BOT-BC88116  Thelypodium laciniatum Frank W. Peirson 1923-7-19 3734 Siskiyou Laird's Landing. Comment
  RSA70031  Sarcobatus vermiculatus F. W. Peirson 1923-7-19 3717 Siskiyou 2 miles below Oregon line, lowest dry Klamath lake. Comment
  UC511922  Phacelia linearis Frank W. Peirson 1923-7-19 3818 Siskiyou 20 mi n Bray Comment
  PASA1715  Erigeron inornatus Frank W. Peirson 1923-7-20 Siskiyou 2 miles below Whitney Creek on the road to Weed Comment
  RSA74837  Phacelia linearis F. W. Peirson 1923-7-19 3818 Siskiyou 20 miles north of Bray. Comment
  RSA97287  Pteryxia terebinthina var. californica F. W. Peirson 1923-7-19 3951 Siskiyou Whitney Creek at the foot of Mt. Shasta. Comment
  RSA80275  Orthocarpus lithospermoides F. W. Peirson, Mabel B. Peirson 1926-4-1 6550 Sonoma 6 miles south of Cloverdale. Comment
  RSA94176  Hemizonia clevelandii F. W. Peirson 1925-8-8 6347 Sonoma About 1 mile N of Santa Rosa. Comment
  RSA68704  Lilium kelleyanum Frank W. Peirson 1908-7-11 1679 Trinity Little Kern River, Sierra Nevada. Comment
  CAS-BOT-BC327848  Oreostemma peirsonii F. W. Peirson 1919-8-8 1276 Tulare Twin Lake Cirque, Mt. Whitney Region Comment
  CAS-BOT-BC431110  Lithophragma bolanderi Frank W. Peirson 1925-3-21 5570 Tulare Lewis Creek, near Lindsay 213 Comment
  JEPS49539  Arctostaphylos viscida subsp. viscida Frank W. Peirson 1936-5-30 11826 Tulare along woodroad about 1 mi from Balch Park 1828 Comment
  JEPS50994  Moehringia macrophylla Frank W. Peirson 1936-5-30 11821 Tulare Balch Park 1920 Comment
  JEPS5603  Delphinium gracilentum Frank W. Peirson 1936-5-30 11825 Tulare along wood road Balch Park 1920 Comment
  JEPS679  Limnanthes montana Frank W. Peirson 1925-3-22 5629 Tulare Middle Fork Tule River 609 Comment
  JEPS9047  Mimulus geniculatus Frank W. Peirson 1925-3-21 5561 Tulare near Lindsay; Lewis Creek 213 Comment
  PASA1959  Plagiobothrys canescens Frank W. Peirson 1925-3-21 5566 Tulare Lewis Creek, near Lindsay 213 Comment
  PASA2035  Lepidium dictyotum Frank W. Peirson 1925-3-21 Tulare Lewis Creeek near Lindsay 213 Comment
  POM17784  Triglochin palustris F. W. Peirson 1919-8-12 1541 Tulare Rattlesnake Creek, tributary of Kern River 2744 Comment
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Mar 1 2011
  RSA65016  Silene menziesii subsp. dorrii F. W. Peirson 1908-7-20 611 Tulare Junction Meadow, Kern River Canyon 2439 Comment
  RSA65711  Silene aperta F. W. Peirson 1908-7-23 613 Tulare Hockett Meadow region, Sequoia Nat l Park 2622 Comment
  RSA66848  Streptanthus tortuosus F. W. Peirson 1908-7-20 669 Tulare Upper Kern River, Sierra Nevada. 2744 Comment
  RSA69031  Dodecatheon alpinum F. W. Peirson 1908-7-15 860 -a Tulare Rock Creek Cirque. Comment
  RSA69267  Chimaphila menziesii F. W. Peirson 1919-8-16 4726 Tulare Giant Forest, Sequoia National Park. 1982 Comment
  RSA69431  Swertia perennis F. W. Peirson 1916-8-22 876 Tulare Big Arroyo, Sierra Nevada. Comment
  RSA69613  Lilaea scilloides F. W. Peirson 1925-3-22 5604 Tulare About 4 miles below Springville. 244 Comment
  RSA69618  Triglochin palustris F. W. Peirson 1919-8-12 1541 Tulare Rattlesnake Creek, tributary of Kern River 2744 Comment
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Mar 1 2011
  RSA72185  Epilobium glaberrimum subsp. fastigiatum F. W. Peirson 1916-8-25 766 Tulare Silver Lake, Little Kern River tributary, Sierra Nevada. 3201 Comment
  RSA72351  Epilobium canum subsp. latifolium F. W. Peirson 1908-7-11 760 Tulare Probably near ford on Trout Mt. Trail, Little Kern, Sierra Nevada Comment
  RSA76002  Nemophila spatulata F. W. Peirson 1911-8-9 980 Tulare Whitney Meadows, Sierra Nevada. 2973 Comment
  RSA79445  Collinsia bartsiifolia var. bartsiifolia F. W. Peirson 1925-3-20 5551 Tulare 4 miles south of Porterville. Comment
  RSA80348  Oreonana clementis F. W. Peirson 1908-7-15 803 Tulare Rock Creek, S of Mt. Whitney, Sierra Nevada. 3354 Comment
  RSA82095  Mimulus aurantiacus var. pubescens F. W. Peirson 1925-3-21 5600 Tulare On Lewis Creek near Lindsay 305 Comment
  RSA83955  Saxifraga oregana F. W. Peirson 1919-8-16 1939 Tulare in damp swale, Giant Forest, Sierra Nevada. 1982 Comment
  RSA84418  Caltha howellii F. W. Peirson 1908-7-23 1879 Tulare Sequoia National Park, Sierra Nevada Comment
  RSA85718  Potentilla drummondii F. W. Peirson 1911-8-9 2630 Tulare Whitney Meadows, Sierra Nevada. Comment
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Feb 4 2011
  RSA86304  Ivesia pygmaea F. W. Peirson 1916-8-25 1962 Tulare Silver Lake, Little Kern Tributary, Sierra Nevada. 3201 Comment
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Feb 25 2011
  RSA86809  Sorbus aucuparia F. W. Peirson 1908-7-21 1990 Tulare Coyote Creek, Sierra Nevada. Comment
  RSA86991  Cercis occidentalis F. W. Peirson 1908-7-8 1997 Tulare Tule River. Comment
  RSA87391  Lupinus lyallii var. lyallii F. W. Peirson 1908-7-11 536 Tulare Little Kern River. 1753 Comment
  RSA87474  Lupinus padre-crowleyi F. W. Peirson 1908-7-13 537 Tulare Volcano Creek Comment
  CAS-BOT-BC417028  Sedella pumila F. W. Peirson 1925-3-21 5575 Tulare Near summit of rocky ridge, Lewis Creek near Lindsay 213 Comment
  RSA0001501  Pseudobahia peirsonii F. W. Peirson 1925-3-20 5550 Tulare Between Ducor and Terrebella. Comment
  RSA0029870  Delphinium polycladon F. W. Peirson 1919-8-8 642 Tulare Twin Lake Cirque, Mt. Whitney Region. 3476 Comment
  RSA433745  Plectritis macrocera F. W. Peirson 1925-3-22 14993 Tulare Middle Fork of Tule River, Sierra Nevada. 457 Comment
  RSA65590  Moehringia macrophylla F. W. Peirson 1908-7-23 629 Tulare North Fork of Tule River, Sierra Nevada. Comment
  RSA66697  Dicentra nevadensis F. W. Peirson 1916-8-26 1893 Tulare Trail from Quinn's Horse Camp Comment
  RSA69254  Pleuricospora fimbriolata F. W. Peirson 1919-8-15 840 Tulare Giant Forest, Sierra Nevada. 1829 Comment
  RSA70125  Dichelostemma volubile F. W. Peirson 1936-5-30 11820 Tulare On road to Balch Park. 1067 Comment
  RSA70143  Triteleia ixioides subsp. scabra F. W. Peirson 1925-3-22 5602 Tulare Lower part of Frazier Valley Comment
  RSA70368  Calochortus minimus Frank W. Peirson 1908-7-24 1664 Tulare North Fork of Tule River, Sierra Nevada. Comment
  RSA70446  Allium campanulatum F. W. Peirson 1908-7-24 1657 Tulare North Fork of Tule River, Sierra Nevada. Comment
  RSA72021  Polemonium californicum F. W. Peirson 1919-8-18 903 Tulare Rowell Meadows, Sierra Nevada 2683 Comment
  RSA72642  Wyethia ovata F. W. Peirson 1908-7-9 1327 Tulare Tule River, Sierra Nevada. Comment
  RSA77800  Hackelia mundula F. W. Peirson 1908-7-10 1008 Tulare Tule River, Sierra Nevada. Comment
  RSA79634  Cryptantha torreyana F. W. Peirson 1908-7-9 1037 Tulare Tule River below the forks. Comment
  RSA80086  Mimulus floribundus F. W. Peirson 1919-8-12 1144 Tulare Rattlesnake Creek tributary to Kern River. 2744 Comment
  RSA80278  Orthocarpus lacerus F. W. Peirson 1911-8-14 1165 Tulare Rattlesnake Creek, Sierra Nevada. Comment
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Jan 30 2016
  RSA82053  Cordylanthus rigidus subsp. rigidus F. W. Peirson 1908-7-9 1159 Tulare Tule River Comment
  RSA83410  Monardella sheltonii F. W. Peirson 1919-8-17 1073 Tulare Pattee Meadow Comment
  RSA85027  Polystichum scopulinum F. W. Peirson 1916-8-25 1508 Tulare Silver Lake. Sierra Nevada. 3201 Comment
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Feb 6 2013
  RSA85813  Ivesia santolinoides F. W. Peirson 1908-7-10 1984 Tulare Tule River. Comment
  RSA91643  Carex vernacula F. W. Peirson 1916-8-25 1632 Tulare Silver Lake, Little Kern River tributary, Sierra Nevada. 3201 Comment
  RSA91665  Trisetum spicatum F. W. Peirson 1916-8-25 1602 Tulare Silver Lake, Little Kern tributary. 3201 Comment
  RSA92319  Poa secunda F. W. Peirson 1925-3-20 5549 Tulare Roadside between Ducor and Terrabella Comment
  RSA93845  Aster peirsonii F. W. Peirson 1919-8-8 1276 Tulare Twin Lake Cirque, Mt. Whitney region, Sierra Nevada. 3506 Comment
  RSA93868  Dugaldia hoopesii F. W. Peirson 1908-7-13 1410 Tulare Volcano Creek, Sierra Nevada. Comment
  RSA94401  Orochaenactis thysanocarpha F. W. Peirson 1916-8-14 1394 Tulare Lloyds Meadow. 1677 Comment
  RSA94908  Cirsium eatonii F. W. Peirson 1919-8-8 1460 Tulare Whitney Creek, Sierra Nevada. 3354 Comment
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Jul 4 2012
  RSA94997  Agoseris aurantiaca F. W. Peirson 1919-8-10 s.n. Tulare At Funston Camp, Kern River Canyon, Sierra Nevada 2043 Comment
  RSA95083B  Microseris campestris F. W. Peirson 1925-3-22 5605 Tulare About 4 miles below Springville. 244 Comment
  RSA95293  Rhamnus ilicifolia F. W. Peirson 1925-3-22 5610 Tulare Middle Fork Tule River 457 Comment
  RSA95344  Asarum hartwegii F. W. Peirson 1908-7-10 s.n. Tulare Tule River, Sierra Nevada. Comment
  RSA97229  Cornus nuttallii F. W. Peirson 1908-7-24 821 Tulare North Fork of Tule River, Sierra Nevada. Comment
  RSA97275  Cornus stolonifera F. W. Peirson 1908-7-10 2097 Tulare Tule River. Comment
  RSA99361  Symphoricarpos mollis F. W. Peirson 1919-8-13 1197 Tulare Trail from Silver lakes to Mineral King, Sierra Nevada 3125 Comment
  CAS-BOT-BC249569  Castilleja applegatei subsp. pallida F. W. Peirson 1927-8-3 7621 Tuolumne West side of Mt. Dana 3108 Comment
  RSA87421  Lupinus polyphyllus subsp. superbus F. W. Peirson 1927-8-3 7633 Tuolumne West side of Mt. Dana. 3110 Comment
  PASA900  Saxifraga bryophora Frank W. Peirson 1927-7-13 Tuolumne Trail from Tuolumne Meadows to Conness Peak 2743 Comment
  RSA69841  Juncus chlorocephalus F. W. Peirson 1927-7-31 7603 Tuolumne trail from Tuolumne Meadows to Conness Peak, Sierra Nevada Comment
  RSA79835  Penstemon roezlii F. W. Peirson 1932-7-24 10399 Tuolumne Slopes above Relief Reservoir, Stanislaus River region, Sierra Nevada. 2287 Comment
  RSA93146  Aster occidentalis F. W. Peirson 1930-8-14 9220 Tuolumne Tuolumne Meadows, Sierra Nevada. 2591 Comment
  RSA94152  Hulsea brevifolia F. W. Peirson 1910-1 1402 Tuolumne Sierra Nevada in region of Yosemite National Park Comment
  RSA94192  Artemisia ludoviciana subsp. ludoviciana F. W. Peirson 1930-8-14 9218 Tuolumne Near river in Tuolumne Meadows. 2591 Comment
  RSA94653  Senecio subnudus F. W. Peirson 1930-8-14 9221 Tuolumne Tuolumne Meadows, Sierra Nevada. 2591 Comment
  RSA94894  Arnica mollis F. W. Peirson 1927-8-3 7620 Tuolumne West slope of Mt. Dana, Sierra Nevada. 3110 Comment
  RSA95197  Sidalcea glaucescens F. W. Peirson 1932-7-25 10404 Tuolumne Abundant in open flat, Sonora Pass Rd, along the Stanislaus River 1829 Comment
  GH378812  Boechera lyallii F. W. Peirson 1940-8-2 12973 Unknown east side Ruby stream below Ruby Lake, Rock Creek Lake Basin 3383 Comment
  RSA84352  Boykinia major F. W. Peirson 1910-8-2 1946 Unknown Tamarack Flat. Sierra Nevada. Yosemite National Park. 1982 Comment
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Jul 4 2012
  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
  CAS-BOT-BC166818  Epilobium canum subsp. latifolium Peirson 1920-9-14 2293 Unknown Slope west of Coldwater Comment
  GH404014  Cryptantha humilis F. W. Peirson 1930-8-9 9153 Unknown Rock Creek Lake Basin, glacial ridge east of Heart Lake Comment
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Nov 24 2015
  RSA65238  Eriogonum polypodum F. W. Peirson 1763 Unknown Sierra Nevada Comment
  RSA69227  Ledum glandulosum F. W. Peirson 1951-1 842 Unknown Sierra Nevada Comment
  RSA88821  Carex straminiformis F. W. Peirson 1934-7-19 11268 Unknown Divide between Mono and Madera County, at Minaret Summit. 2957 Comment
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Jun 10 2012
  RSA95200  Sidalcea glaucescens F. W. Peirson 1910-1 2062 Unknown Trail down Rush Creek to Silver Lake, Sierra Nevada Comment
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Feb 6 2013
  CAS-BOT-BC221192  Calystegia malacophylla subsp. pedicellata Frank W. Peirson 1923-6-10 3555 Ventura Seymour Creek, Mt. Pinos 1798 Comment
  CAS-BOT-BC339526  Lessingia glandulifera var. glandulifera F. W. Peirson 1922-7-29 4229 Ventura Seymour Creek, Mt. Pinos Comment
  RSA75944  Phacelia austromontana F. W. Peirson 1923-6-11 3561 Ventura Mt. Pinos. 2439 Comment
  RSA79785  Keckiella breviflora F. W. Peirson 1922-7-29 3237 Ventura Seymour Creek, Mt. Pinos. 1829 Comment
  UCD86555  Muhlenbergia asperifolia F. W. Peirson 1922-7-29 3221 Ventura Seymour Creek, Mt. Pinos Region. 1828 Comment
  JEPS17213  Lewisia nevadensis Frank W. Peirson 1923-6-11 3594 Ventura about the Big Cienega, slopes of Mt. Pinos (vicinity of Kern - Ventura Co. line) 2560 Comment
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Aug 1 2016
  JEPS62729  Salvia leucophylla Frank W. Peirson 1925-4-19 5769 Ventura Sespe Canyon 228 Comment
  PASA1787  Baccharis douglasii Frank W. Peirson 1920-7-28 Ventura 3 miles west of Ventura Comment
  RSA68341  Lepidium lasiocarpum F. W. Peirson 1925-4-19 5771 Ventura Hueneme Beach Comment
  RSA70267  Juncus macrandrus F. W. Peirson 1922-7-30 4262 Ventura Seymour Creek, Mt. Pinos. 1951 Comment
  RSA72317  Gilia tetrabreccia F. W. Peirson 1923-6-10 3581 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA80700  Hypericum formosum var. scouleri F. W. Peirson 1922-6-30 3241 Ventura South Fork of Seymour Creek, Mt. Pinos. 1951 Comment
  RSA82098  Mimulus aurantiacus var. pubescens F. W. Peirson 1918-5-5 1146 Ventura West foot of Santa Susanna Pass. Comment
  RSA82282  Castilleja affinis F. W. Peirson 1923-6-10 4226 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA86741  Leymus condensatus F. W. Peirson 1918-5-5 1565 Ventura Roadside W of Simi Comment
  RSA87317  Galium bifolium F. W. Peirson 1923-6-11 3564 Ventura Mt. Pinos. 2561 Comment
  RSA87338  Melica imperfecta F. W. Peirson 1925-4-18 5750 Ventura Sespe Creek, near Fillmore. 305 Comment
  RSA90170  Astragalus lentiginosus F. W. Peirson 1923-6-10 3583 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA90370  Lotus wrangelianus F. W. Peirson 1923-6-10 3569 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA91162  Lessingia glandulifera var. glandulifera F. W. Peirson 1922-7-29 4229 Ventura Seymour Creek, Mt Pinos 1829 Comment
  RSA91173  Lessingia tenuis F. W. Peirson 1922-7-31 3242 Ventura Seymour Creek. 1829 Comment
  RSA91251  Lupinus breweri var. bryoides F. W. Peirson 1922-7-30 4422 Ventura Mt. Pinos. 2439 Comment
  RSA93907  Iva axillaris F. W. Peirson 1922-7-29 4235 Ventura Seymour Creek, Mt. Pinos 1799 Comment
  RSA95246  Microseris lindleyi F. W. Peirson 1923-6-10 3586 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  RSA97409  Lomatium vaginatum F. W. Peirson 1923-6-10 3553 Ventura Seymour Creek, Mt. Pinos. 1799 Comment
  SD87626  Malacothamnus fasciculatus F. W. Peirson 1922-7-30 3247 Ventura Mt. Pinos, south fork of Seymour Creek. 1920 Comment



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