Search Results — 929 specimen records retrieved (689 records with coordinates)
Results for search: County=SAN DIEGO; Source=All; Collector=Peirson;   

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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/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC106165  Brickellia frutescens Frank W. Peirson 1928-4-22 7885 San Diego San Felipe Cr. at the Narrows Comment
  CAS-BOT-BC106345  Brickellia atractyloides var. arguta Frank W. Peirson 1928-4-20 7851 San Diego San Felipe Creek, Sentenac Canyon Comment
  CAS-BOT-BC114141  Cyperus squarrosus Frank Warrington Peirson 1920-6-22 2684 San Diego Meadow at east foot of Morgan Hill, Palomar Mts. 1432 Comment
  CAS-BOT-BC115656  Carex triquetra Frank Warrington Peirson 1923-3-26 4266 San Diego Ca. 0.5 mi N of Encinitas on West sloping hill. Comment
  CAS-BOT-BC115657  Carex triquetra Frank Warrington Peirson; P. A. Munz; H. L. Mason 1926-4-30 6698 San Diego Brushy hill slope about 2 mi from Pala on road to Henshaw Dam. Comment
  CAS-BOT-BC115900  Carex subfusca Frank Warrington Peirson 1925-5-15 5918 San Diego Laguna Lakes Camp, Laguna Mountains. 1752 Comment
  CAS-BOT-BC13504  Amblyopappus pusillus Frank W. Peirson 1923-3-27 3405 San Diego Imperial Beach Comment
  CAS-BOT-BC160545  Camissoniopsis lewisii F. W. Peirson 1923-3-26 3409 San Diego Agua Hedionda Comment
  CAS-BOT-BC175159  Silene verecunda Frank W. Peirson 1924-6-25 4832 San Diego Laguna Lakes Auto Camp, Laguna Mts. Comment
  CAS-BOT-BC191305  Chorizanthe fimbriata var. fimbriata Frank W. Peirson 1924-6-21 4763 San Diego Grade N of Pala 228 Comment
  CAS-BOT-BC198527  Lotus Frank W. Peirson 1924-6-23 4808 San Diego North slope French Valley, Palomar Mt. 1524 Comment
  CAS-BOT-BC203391  Horsfordia newberryi Frank W. Peirson 1928-4-22 7874 San Diego San Felipe Creek, 4 miles below Sentenac Canyon Comment
  CAS-BOT-BC224621  Dichondra occidentalis Frank W. Peirson 1927-4-19 7250 San Diego Headland south of Torrey Pines Comment
  CAS-BOT-BC226892  Linanthus orcuttii F. W. Peirson 1920-6-24 2173 San Diego East foot of Morgan Hill, Palomar Mts. 1432 Comment
  CAS-BOT-BC232913  Saltugilia caruifolia Frank W. Peirson 1920-6-24 2295 San Diego Palomar, E trail from Oak Grove 1676 Comment
  CAS-BOT-BC243666  Justicia californica Frank W. Peirson 1928-3-24 7736 San Diego San Felipe Creek near the foot of Sentenac Canyon Comment
  CAS-BOT-BC253320  Eriogonum fasciculatum var. foliolosum Frank W. Peirson 1925-5-27 5956 San Diego Vallecito Canyon, Laguna Mts. Comment
  CAS-BOT-BC25457  Boechera retrofracta Frank W. Peirson 1925-5-15 5922 San Diego Laguna Mountains. Laguna Lakes Camp. Comment
  CAS-BOT-BC257191  Chorizanthe polygonoides var. longispina Frank W. Peirson 1925-5-18 5965 San Diego Cuyamaca Lake 1402 Comment
  CAS-BOT-BC263556  Eriogonum thomasii Frank W. Peirson 1928-4-22 7881 San Diego San Felipe Creek at the Narrows Comment
  CAS-BOT-BC263557  Eriogonum thomasii Frank W. Peirson 1928-4-22 7881 San Diego Along foot of rocky walls of the Narrows, San Felipe Creek, western edge of Colorado Desert Comment
  CAS-BOT-BC266507  Githopsis diffusa F. W. Peirson 1925-5-18 5962 San Diego On N shore of Cuyamaca Lake, Cuyamaca Mountains, E part of county 1402 Comment
  CAS-BOT-BC291432  Cotula coronopifolia F. W. Peirson 1924-6-26 4880 San Diego At lower part of Vallecito Canyon, east slope of Laguna Mts. Comment
  CAS-BOT-BC292298  Ericameria linearifolia Frank W. Peirson 1925-5-17 5959 San Diego Vallecito Canyon, Laguna Mts 1524 Comment
  CAS-BOT-BC296475  Eriophyllum wallacei F. W. Peirson 1925-5-16 5935 San Diego along ridge about 1 miles north of Public Camp, Laguna Lakes, Laguna Mts. 1676 Comment
  CAS-BOT-BC307418  Gnaphalium palustre Frank W. Peirson 1924-6-22 4778 San Diego Near Country Club, Palomar 1584 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-BC314984  Hemizonella minima F. W. Peirson 1925-5-15 5926 San Diego Laguna Lakes, Laguna Mts. Comment
  CAS-BOT-BC327047  Trixis californica Frank W. Peirson 1928-3-24 7745 San Diego San Felipe Creek 2 miles below Sentenac Canyon Comment
  CAS-BOT-BC330265  Pentachaeta aurea F. W. Peirson 1924-6-27 4863 San Diego Laguna Mts., at camp, Laguna Lakes Region Comment
  CAS-BOT-BC330266  Pentachaeta aurea F. W. Peirson 1925-5-15 5913 San Diego Laguna Lakes Camp, Laguna Mts., eastern part of county 1524 Comment
  CAS-BOT-BC339004  Lasthenia californica F. W. Peirson 1925-5-18 6018 San Diego Cuyamaca Lake 1402 Comment
  CAS-BOT-BC348554  Micropus californicus var. californicus Frank W. Peirson 1930-5-11 8779 San Diego Henshaw Dam, northeastern San Diego County 853 Comment
  CAS-BOT-BC361801  Psilocarphus brevissimus var. brevissimus Frank W. Peirson 1923-3-28 5279 San Diego Mesa about 6 miles north of San Diego Comment
  CAS-BOT-BC376037  Stylocline gnaphaloides Frank W. Peirson 1927-4-19 7244 San Diego On headland south of Torrey Pines Comment
  CAS-BOT-BC38296  Caulanthus cooperi Frank W. Peirson 1928-3-24 7746 San Diego San Felipe Creek, 2 miles below 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-BC407813  Gilia ochroleuca subsp. exilis F. W. Peirson 1929-5-5 8363 San Diego South slope of divide between Oak Grove and Warner's Hot Springs 914 Comment
  CAS-BOT-BC407814  Gilia ochroleuca subsp. exilis F. W. Peirson 1929-5-4 8342 San Diego About 5 miles N of Oak Grove 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-BC407816  Gilia ochroleuca subsp. exilis F. W. Peirson 1903-5-15 3507 San Diego Tia Juana river, Tia Juana Comment
  CAS-BOT-BC407817  Gilia ochroleuca subsp. exilis F. W. Peirson 1903-5-15 3507 San Diego Tia Juana river, Tia Juana Comment
  CAS-BOT-BC44522  Arctostaphylos pringlei subsp. drupacea Frank W. Peirson 1926-5-1 6712 San Diego Palomar Mt. east trail Comment
  CAS-BOT-BC46323  Arctostaphylos pungens Frank W. Peirson 1929-3-30 8279 San Diego Pines Hills Lodge near Julian. Comment
  CAS-BOT-BC47734  Bursera microphylla Frank W. Peirson 1941-4-7 13071 San Diego Six miles south of the San Felipoe Boulevard. Road from Ocotillo gas station Comment
  CAS-BOT-BC47738  Bursera microphylla Frank W. Peirson 1941-4-7 13071 San Diego Six miles south of the San Felipe Boulevard. Road from Ocotillo station Comment
  CAS-BOT-BC60283  Lyrocarpa coulteri Frank W. Peirson 1928-3-24 7749 San Diego San Felipe Creek, 2 miles below Sentenac Canyon. 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
  JEPS11813  Githopsis diffusa subsp. candida Frank W. Peirson 1925-5-19 6003 San Diego 1 mi s Morettis Comment
  JEPS17817  Calochortus splendens Frank W. Peirson 1924-6-27 4858 San Diego near Little Lake; Laguna Mts. 1828 Comment
  JEPS19457  Lotus micranthus Frank W. Peirson 1925-5-18 5963 San Diego n shore of Cuyamaca Lake Cuyamaca Lake 1402 Comment
  JEPS20270  Limonium sinuatum Frank W. Peirson 1923-3-27 3397 San Diego Imperial Beach 0 Comment
  JEPS27004  Streptanthus bernardinus Frank W. Peirson 1924-6-25 4837 San Diego near auto camp; Laguna Mts., Laguna Lakes region 1828 Comment
  JEPS41761  Erigeron divergens F. W. Peirson 1923-5-27 3365 San Diego 2 mi below Otay Dam; Otay Creek Comment
  JEPS42339  Ceanothus palmeri Frank W. Peirson 1925-5-16 5931 San Diego ca 1 mi n Laguna Lakes Camp (along ridge); Laguna Mts. Comment
  JEPS42340  Ceanothus oliganthus var. oliganthus Frank W. Peirson 1926-5-1 6711 San Diego East trail Palomar Mt. Comment
  JEPS42400  Ceanothus greggii var. perplexans Frank W. Peirson 1925-5-16 5939 San Diego Monument Peak, Laguna Mountains Comment
  JEPS43172  Montia linearis F. W. Peirson 1925-5-18 San Diego Cuyamaca Lake Comment
  JEPS43370  Claytonia parviflora subsp. viridis Frank W. Peirson 1925-5-15 5908 San Diego Laguna Lakes Camp; Laguna Mts. 1828 Comment
  JEPS4398  Trifolium willdenovii Frank W. Peirson 1925-5-18 5971 San Diego n shore lake; Cyamaca Lake 1706 Comment
  JEPS45739  Linum lewisii Frank W. Peirson 1925-5-19 5995 San Diego Cuyamaca Mountains, near foot of Middle Peak Middle Peak; Cuyamaca Mountains, Middle Peak 1493 Comment
  JEPS49554  Arctostaphylos glandulosa subsp. glandulosa Frank W. Peirson 1927-4-18 7233 San Diego halfway from Newtown to Buckman Springs Comment
  JEPS4977  Eriophyllum wallacei Frank W. Peirson 1925-5-16 5935 San Diego about one mi n Laguna Lakes camp; Laguna Mts. 1828 Comment
  JEPS51095  Stellaria nitens Frank W. Peirson 1925-5-15 5923 San Diego Laguna Lakes Camp; Laguna Mts. Comment
  JEPS51514  Scleranthus annuus subsp. annuus Frank W. Peirson 1926-4-30 6691 San Diego on road to Henshaw Dam 1 mi away Pala Comment
  JEPS52582  Calandrinia ambigua Frank W. Peirson 1926-2-22 6512 San Diego on stony hills 1/2 mi n camp in Palm Grove; Colorado Desert, 1000-Palm Canyon 152 Comment
Read comments Jun 25 2013
  JEPS54139  Thysanocarpus laciniatus Frank W. Peirson 1925-5-17 5942 San Diego e slope Laguna Mts., Vallecito Canyon Vallecito Canyon; e slope Laguna Mts., Vallecito Canyon Comment
  JEPS5414  Nemacladus longiflorus var. longiflorus Frank W. Peirson 1925-5-15 5900 San Diego 4 mi s Buckman Springs 640 Comment
  JEPS54840  Astragalus palmeri Frank W. Peirson 1922-4-13 2899 San Diego Mountain Springs grade 1066 Comment
  JEPS55409  Lotus argophyllus Frank W. Peirson 1925-5-18 5977 San Diego n shore Cuyamaca Lake 1402 Comment
  JEPS56349  Allium amplectens Frank W. Peirson 1925-5-18 5986 San Diego near w end of Cuyamaca Lake Cuyamaca Lake 1402 Comment
  JEPS56971  Eriogonum fasciculatum var. foliolosum Frank W. Peirson 1926-4-30 6695 San Diego 1 mi on road to Henshaw Dam Pala Comment
  JEPS58546  Linanthus pygmaeus Frank W. Peirson 1925-5-15 5924 San Diego Laguna Lakes Camp Laguna Mts. Comment
  JEPS60570  Clematis pauciflora F. Peirson 1927-4-17 11826 San Diego near summit of rocky peak south Summit Mt. Springs grade 914 Comment
  JEPS61530  Allium haematochiton F. W. Peirson 1922-4-14 2914 San Diego Torrey Pines Reservation Comment
  JEPS65694  Trifolium albopurpureum var. albopurpureum Frank W. Peirson 1925-5-18 5974 San Diego Automobile Camp Cuyamaca Lake 1402 Comment
  JEPS65715  Trifolium depauperatum var. truncatum Frank W. Peirson 1925-5-18 5972 San Diego along north shore; Cuyamaca Lake 1402 Comment
  JEPS70229  Navarretia hamata subsp. hamata Frank W. Peirson 1941-11-7 San Diego Torrey Pines Comment
  JEPS75366  Trifolium willdenovii Frank W. Peirson 1925-5-18 5971 San Diego along n shore Cuyamaca Lake 1402 Comment
  JEPS84918  Clematis pauciflora F. Peirson 1927-4-17 11826 San Diego near summit of rocky peak south Summit Mt. Springs grade 914 Comment
  JEPS9806  Lasthenia gracilis Frank W. Peirson 1925-5-18 6018 San Diego Cuyamaca Lake Cuyamaca Lake (s shore) 1402 Comment
  JEPS9967  Castilleja attenuata Frank W. Peirson 1925-5-18 5966 San Diego Cuyamaca Lake, n shore Cuyamaca Lake 1402 Comment
  LA38962  Mimulus palmeri Frank W. Peirson; 1925-5-15 5919 San Diego Laguna Lakes auto camp, N of camp 1676 Comment
  LA38982  Mimulus fremontii Frank W. Peirson; 1925-5-15 5901 San Diego 4 mi S of Buckman Springs Comment
  LA38990  Mimulus fremontii Frank W. Peirson; 1926-5-1 6721 San Diego Oak Grove 853 Comment
  PASA1061  Lotus americanus Frank W. Peirson 1920-6-25 San Diego San Luis Rey River. Road from Oak Grove to Warners Hot Springs 914 Comment
  PASA1064  Lotus argophyllus Frank W. Peirson 1925-5-18 San Diego Cuyamaca Lake Comment
  PASA1097  Lotus hamatus Frank W. Peirson 1927-4-19 San Diego Headland south of Torrey Pines Comment
  PASA1120  Scutellaria bolanderi Frank W. Peirson 1920-6-25 San Diego Morettis 883 Comment
  PASA1131  Trichostema lanatum var. denudatum Frank W. Peirson 1925-5-18 San Diego Grade up Laguna Mts 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
  PASA149  Orthocarpus densiflorus var. gracilis Frank W. Peirson 1927-4-19 San Diego Headland south of Torrey Pines Comment
  PASA1520  Viola douglasii Frank W. Peirson 1925-5-15 San Diego Laguna Lakes Auto Camp, Laguna Mts. 1828 Comment
  PASA1668  Lupinus longifolius Frank W. Peirson 1923-3-28 San Diego Vista 106 Comment
  PASA1748  Sidalcea malviflora Frank W. Peirson 1922-4-14 San Diego The Hill Top at Grossmont, 12 miles east of San Diego Comment
  PASA1772  Hibiscus denudatus Frank W. Peirson 1928-3-24 San Diego Sentenac Canyon, San Felipe Creek Comment
  PASA1773  Horsfordia newberryi Frank W. Peirson 1928-4-22 San Diego San Felipe Creek, 2 miles below the Sentenac Comment
  PASA1774  Horsfordia newberryi Frank W. Peirson 1928-3-24 San Diego San Felipe Creek, about 2 miles below the Sentenac Comment
  PASA1783  Vitis girdiana Frank W. Peirson 1925-5-17 San Diego Vallecito Canyon, Laguna Mts. Comment
  PASA1784  Ayenia californica Frank W. Peirson 1928-4-22 San Diego San Felipe Creek Comment
  PASA1884  Boisduvalia densiflora Frank W. Peirson 1920-6-25 San Diego Morettis 883 Comment
  PASA1976  Cryptantha barbigera Frank W. Peirson 1925-5-15 San Diego Summit Mountain Springs Grade 1066 Comment
  PASA2002  Amsinckia lycopsoides Frank W. Peirson 1923-3-27 San Diego Imperial Beach Comment
  PASA2051  Lyrocarpa coulteri Frank W. Peirson 1928-3-24 San Diego San Felipe Creek, 2 miles below Sentenac Canyon Comment
  PASA2116  Nemophila menziesii Frank W. Peirson 1929-5-4 San Diego Palomar, east trail 1295 Comment
  PASA2163  Brickellia frutescens Frank W. Peirson 1928-4-22 San Diego San Felipe Creek at the Narrows Comment
  PASA2172  Amblyopappus pusillus Frank W. Peirson 1923-3-27 San Diego Imperial Beach Comment
  PASA2206  Dyssodia porophylloides Frank W. Peirson 1925-5-15 San Diego Summit of Mountain Springs Grade 1066 Comment
  PASA2221  Eriophyllum wallacei var. rubellum Frank W. Peirson 1925-5-17 San Diego Vallecito Canyon, east slope Laguna Mts. Comment
  PASA2261  Ribes nevadense Frank W. Peirson 1926-5-1 San Diego Palomar Mt. Trail form Oak Grove. Bush 4 ft high at the Sour Dough Spring Comment
  PASA2293  Micropus californicus Frank W. Peirson 1925-5-18 San Diego Cuyamaca Lake 1402 Comment
  PASA2298  Stylocline gnaphaloides Frank W. Peirson 1922-4-14 San Diego Torrey Pines Comment
  PASA2394  Clematis pauciflora Frank W. Peirson 1923-3-27 San Diego 6 miles north of San Diego Comment
  PASA2509  Ceanothus palmeri Frank W. Peirson 1929-3-30 San Diego Grade north of Pala 304 Comment
  PASA2526  Delphinium hesperium subsp. cuyamacae Frank W. Peirson 1924-6-23 San Diego North slope French Vally, Palomar 1523 Comment
  PASA2533  Delphinium parryi Frank W. Peirson 1923-3-27 San Diego Imperial Beach Comment
  PASA2547  Delphinium hesperium subsp. cuyamacae Frank W. Peirson 1924-6-23 4809 San Diego North slope French Valley, Palomar 1523 Comment
  PASA2554  Delphinium parryi Frank W. Peirson 1923-3-27 3406 San Diego Imperial Beach 0 Comment
  PASA2595  Tropidocarpum gracile Frank W. Peirson 1928-3-24 7728 San Diego Warner's Hot Springs, in auto camp grounds 960 Comment
  PASA2615  Clematis pauciflora Frank W. Peirson 1925-5-17 5949 San Diego Vallecito Canyon, east slope Laguna Mtns. Comment
  PASA263  Vicia californica Frank W. Peirson 1920-6-24 San Diego Palomar Mt. east trail 1676 Comment
  PASA2749  Astragalus vaseyi Frank W. Peirson 1928-4-20 7850 San Diego Sentenac Canyon, San Filipe Creek Comment
  PASA294  Plectritis macrocera Frank W. Peirson 1925-5-15 San Diego Laguna Lakes Auto Camp, Laguna Mts. 1828 Comment
  PASA298  Githopsis diffusa Frank W. Peirson 1925-5-18 San Diego Cuyamaca Lake 1402 Comment
  PASA304  Nemacladus longiflorus Frank W. Peirson 1926-5-1 San Diego Oak Grove 853 Comment
  PASA325  Malacothrix californica var. glabrata Frank W. Peirson 1928-4-20 San Diego San Felipe Creek at foot of Sentenac Canyon Comment
  PASA353  Thelypodium cooperi Frank W. Peirson 1928-4-20 San Diego San Felipe Creek at foot of Sentenac Canyon Comment
  PASA367  Montia fontana Frank W. Peirson 1924-6-22 San Diego Near Country Club, head of Doane Valley, Palomar Mt 1584 Comment
  PASA410  Viguiera deltoidea var. parishii Frank W. Peirson 1925-5-17 San Diego Lower part of Vallecito Canyon, Laguna Mts. Comment
  PASA429  Hypericum formosum Frank W. Peirson 1924-6-22 San Diego Palomar Mt., near the Country Club 1584 Comment
  PASA586  Wedelia incarnata Frank W. Peirson 1924-6-26 San Diego Vallecito Canyon, Laguna Mts. Comment
  PASA621  Lilaea subulata Frank W. Peirson 1923-3-28 San Diego On the Mesa about 6 miles north of San Diego 121 Comment
  PASA813  Lupinus concinnus var. optatus Frank W. Peirson 1929-5-4 San Diego Palomar Mt. east trail 1066 Comment
  PASA848  Penstemon antirrhinoides subsp. microphyllus Frank W. Peirson 1925-5-17 San Diego Vallecito Canyon, Laguna Mts. Comment
  PASA984  Castilleja foliolosa Frank W. Peirson 1928-4-21 San Diego San Felipe Creek near foot of Sentenac Canyon Comment
  POM128739  Trifolium depauperatum var. amplectens F. W. Peirson 1927-4-19 7252 San Diego Headland South of Torrey Pines Comment
  POM128756  Clematis pauciflora F. W. Peirson 1927-4-17 7225 San Diego Summit of Mountain Springs Grade. Comment
  POM128763  Anagallis minima F. W. Peirson 1927-4-19 7251 San Diego Headland South of Torrey Pines Comment
  POM14736  Mimulus palmeri F. W. Peirson 1920-6-24 2183 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  POM175473  Alnus incana subsp. tenuifolia F. W. Peirson 1931-8-7 s.n. San Diego De Luz Canyon: Along De Luz-Murrieta Road and De Luz Creek. 150 Comment
  POM175540  Zigadenus venenosus var. venenosus Frank W. Peirson 1923-3-26 4102 San Diego 1 mile South of Torrey Pines. La Jolla. Comment
  POM175545  Viguiera laciniata F. W. Peirson 1923-3-26 3364 San Diego 4 miles south of San Onofre Comment
  POM17758  Castilleja foliolosa F. W. Peirson 1923-3-26 2890 San Diego 1/2 mile south of Torrey Pines. Comment
  POM17780  Verbena menthifolia F. W. Peirson 1923-3-27 3379 San Diego Otay Creek. 76 Comment
  POM17781  Erigeron divergens F. W. Peirson 1923-3-27 3365 San Diego Otay Creek. 2 miles below dam and at about 250 ft. 76 Comment
  POM17785  Lilaea scilloides F. W. Peirson 1923-3-28 3404 San Diego Mesa Creek, San Diego 122 Comment
Read comments May 13 2016
  POM17786  Isoetes howellii F. W. Peirson 1923-3-28 3366 San Diego near boulevard on mesa about 6 miles north of San Diego 121 Comment
  POM182005  Artemisia ludoviciana subsp. albula F. W. Peirson 1932-9-5 10474 San Diego Grade east of Santa Ysabel. Comment
  POM182006  Epilobium brachycarpum F. W. Peirson 1932-9-4 s.n. San Diego Potrero. 701 Comment
  POM184409  Grindelia hirsutula var. hallii F. W. Peirson 1932-9-5 10472 San Diego Cuyamaca Lake at Auto Campgrounds 1433 Comment
  POM193460  Melica imperfecta var. refracta F. W. Peirson 1929-5-4 8351 San Diego Trail from Oak Grove to Palomar Mountain. 1296 Comment
  POM20529  Phacelia distans F. W. Peirson 1923-3-26 3384 San Diego Agua Hedionda Comment
  POM20542  Galium nuttallii F. W. Peirson 1923-3-26 3357 San Diego 0.5 mile north of Encinitas. Comment
  POM20562  Solanum umbelliferum F. W. Peirson 1923-3-26 3380 San Diego 0.5 mile north of Encinitas. Comment
  POM20563  Plagiobothrys bracteatus F. W. Peirson 1923-3-27 3385 San Diego 6 miles S of National City. Comment
  POM274965  Adenostoma sparsifolium F. W. Peirson 1932-9-4 10471 San Diego Campo to Bukman Spring 671 Comment
  POM349375  Thermopsis californica var. semota F. W. Peirson 1924-6-27 4854 San Diego Laguna Lake region, about 0.5 miles above Auto Camp 1677 Comment
  POM364593  Linanthus dianthiflorus subsp. dianthiflorus F. W. Peirson 1895-4-27 1895 San Diego Between Escondido & Rincon. Comment
  POM47630  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1924-6-27 4884 San Diego Monument Peak, Laguna Mts. Comment
  POM76030  Pholistoma membranaceum F. W. Peirson 1927-4-17 7220 San Diego Summit of Mt. Springs Grade, eastern San Diego Co. 1067 Comment
  POM87083  Lupinus agardhianus F. W. Peirson 1927-4-19 7241 San Diego Headland south of Torrey Pines, San Diego Comment
  POM87085  Lupinus agardhianus F. W. Peirson 1928-4-21 7869 San Diego San Felipe Creek near junction of Grapevine Canyon, eastern San Diego Comment
  POM87087  Lupinus agardhianus F. W. Peirson 1922-4-14 2908 San Diego Grossmont, 10 miles east of San Diego. Comment
  POM88469  Viola nephrophylla F. W. Peirson 1925-5-19 9796 San Diego occasional on banks of Brook flowing into S. W. end of Cuyamaca Lake. 1494 Comment
  RSA100200  Lonicera subspicata var. denudata F. W. Peirson 1925-5-17 5947 San Diego At foot of steep part of trail from Vallecito Canyon to Laguna Mountains Comment
  RSA100201  Lonicera subspicata var. denudata F. W. Peirson 1924-6-25 4862 San Diego Top of ridge east of Laguna Lakes, Laguna Mountains. Comment
  RSA100230  Githopsis diffusa subsp. candida F. W. Peirson 1925-5-18 5962 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains. 1402 Comment
  RSA100258  Plectritis ciliosa subsp. insignis F. W. Peirson 1925-5-15 5907 San Diego Laguna Lakes, Laguna Mountains 1829 Comment
  RSA100337  Heterocodon rariflorum F. W. Peirson 1920-6-22 4065 San Diego East foot of Morgan Hill, Palomar Mountains 1433 Comment
  RSA100341  Githopsis diffusa subsp. candida F. W. Peirson 1925-5-19 6003 San Diego 1 mile S of Moretti's N of Santa Ysabel 945 Comment
  RSA128736  Chaenactis carphoclinia var. peirsonii F. W. Peirson 1927-4-14 7182 San Diego Near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Boulevard. 305 Comment
  RSA128769  Lasthenia coronaria F. W. Peirson 1927-4-19 7248 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA193457  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1929-3-31 8284 San Diego Foster Grade, east of Julian. Comment
  RSA292079  Micropus californicus F. W. Peirson 1925-5-18 5981 San Diego South shore of Cuyamaca Lake. 1402 Comment
  RSA367027  Allium parryi F. W. Peirson 1924-6-26 4823 San Diego Laguna Mountains. Lower part of Vallecito Canyon. Comment
  RSA368918  Lilaea scilloides F. W. Peirson 1924-6-24 4880 San Diego Cuyamaca Lake. Comment
  RSA377451  Calochortus splendens Frank W. Peirson 1924-6-25 s.n. San Diego Laguna Lakes Region, Laguna Mountains. Comment
  RSA377454  Calochortus splendens Frank W. Peirson 1924-7-22 s.n. San Diego Palomar. [city now Palomar Mountain] 1616 Comment
  RSA397437  Cornus californica F. W. Peirson 1924-6-22 4785 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA398995  Ceanothus verrucosus F. W. Peirson 1928-3-26 734 San Diego Near Torrey Pines Comment
  RSA401643A  Monardella nana subsp. nana F. W. Peirson 1924-6-25 4848 San Diego Laguna Mountains, Laguna Lakes region. Comment
  RSA405742  Lathyrus vestitus subsp. alefeldii F. W. Peirson 1924-6-27 4882 San Diego near summit of Monument Peak, Laguna Mts. Comment
  RSA408350  Collinsia heterophylla F. W. Peirson 1925-5-19 6002 San Diego 1 mile south of Morettis, northern San Diego Co. (south of Henshaw Lake) 930 Comment
Read comments Sep 28 2007
  RSA411399  Salvia clevelandii F. W. Peirson 1924-6-24 4822 San Diego South slope of Palomar Mountains 1067 Comment
Read comments Apr 29 2008
  RSA427394  Solanum umbelliferum F. W. Peirson 1926-5-1 6720 San Diego Bottom lands of temecula River, Oak grove. 854 Comment
  RSA432490B  Chamaesyce serpillifolia F. W. Peirson 1924-6-22 s.n. San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA435956  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
  RSA436109  Downingia concolor var. brevior F. W. Peirson 1925-5-19 5982 San Diego Cuyamaca Lake 1402 Comment
Read comments Mar 21 2014
  RSA440743  Trichostema parishii F. W. Peirson 1924-6-24 4878 San Diego South side Palomar 1220 Comment
  RSA468582  Linanthus androsaceus subsp. luteolus F. W. Peirson 1924-6-23 s.n. San Diego Head of Doane Valley, Palomar Mountains. 1524 Comment
  RSA498327  Lotus heermannii F. W. Peirson 1924-6-23 s.n. San Diego Upper Doane Valley Palomar 1494 Comment
  RSA499265  Rosa gymnocarpa F. W. Peirson 1924-6-22 s.n. San Diego Doane Valley. 1494 Comment
  RSA614276  Pentachaeta aurea F. W. Peirson 1927-4-19 7235 San Diego Headland south of Torrey Pines, Comment
  RSA64773  Oxytheca trilobata F. W. Peirson 1920-6-24 2721 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA65059  Silene verecunda subsp. platyota F. W. Peirson 1924-6-22 4783 San Diego near Country Club, Palomar Mts. 1616 Comment
  RSA65066  Silene verecunda subsp. platyota F. W. Peirson 1924-6-25 4832 San Diego Above camp [Laguna Camp?], Laguna Lakes Region, Laguna Mountains. Comment
  RSA65124  Eriogonum deflexum var. deflexum F. W. Peirson 1927-4-14 7188 San Diego Near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Boulevard. 305 Comment
  RSA65143  Eriogonum fasciculatum var. foliolosum F. W. Peirson 1926-4-30 6695 San Diego About 1 mile from Pala on the road to Henshaw Dam Comment
  RSA65150  Eriogonum fasciculatum var. polifolium F. W. Peirson 1925-5-17 5956 San Diego Lower part of Vallecito Canyon. Comment
  RSA65165  Loeflingia squarrosa F. W. Peirson 1920-6-25 4214 San Diego San Luis Rey River. 915 Comment
  RSA65166  Lastarriaea coriacea F. W. Peirson 3360 San Diego 6 miles north of San Diego on the Escondido Road. 122 Comment
  RSA65171  Chorizanthe fimbriata var. laciniata F. W. Peirson 1924-6-26 4881 San Diego Lower part of Vallecito Canyon. Comment
  RSA65173  Chorizanthe fimbriata var. fimbriata F. W. Peirson 1924-6-21 4763 San Diego Grade north of Pala. 229 Comment
  RSA65197  Chorizanthe fimbriata F. W. Peirson 1928-4-20 7847 San Diego Near summit of low hill on San Felipe Creek, about 2 miles above Sentenac Canyon. Comment
  RSA65241  Chorizanthe procumbens F. W. Peirson 1926-4-30 6692 San Diego Sandy washes and openings among shrubs; 1 mile east of Pala, San Diego Co., California. Comment
  RSA65256  Chorizanthe procumbens F. W. Peirson 1924-6-21 4766 San Diego Benches southeast of Pala 244 Comment
  RSA65258  Chorizanthe polygonoides var. longispina F. W. Peirson 1925-5-18 5965 San Diego On flats at end of Cuyamaca Lake, Eastern San Deigo Co. 1402 Comment
  RSA65347  Atriplex watsonii F. W. Peirson 1923-3-27 3413 San Diego Imperial Beach. Comment
  RSA65414  Cistanthe monandra F. W. Peirson 1923-3-26 3388 San Diego 0.5 mile north of Encinitas. Comment
  RSA65517  Sagina decumbens subsp. occidentalis F. W. Peirson 1927-4-19 7239 San Diego Headland south of Torrey Pines. Comment
  RSA65528  Mammillaria dioica F. W. Peirson 1928-3-24 7754 San Diego San Felipe Canyon above Sentac Canyon. Comment
  RSA65587  Minuartia pusilla F. W. Peirson 1925-5-15 5925 San Diego Laguna Lakes Camp, Laguna Mountains. Comment
  RSA65588  Arenaria macrophylla F. W. Peirson 1925-5-19 6000 San Diego Middle Peak, Cuyamaca Mts., and along divide to the south. 1616 Comment
  RSA65621  Opuntia echinocarpa var. wolfii F. W. Peirson 1928-4-20 7853 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
Read comments Mar 19 2020
  RSA65626  Elatine brachysperma F. W. Peirson, W. L. Jepson 1927-4-19 7242 San Diego Headland south of Torrey Pines, Comment
  RSA65630  Scleranthus annuus subsp. annuus F. W. Peirson 1926-4-30 6691 San Diego About 1 mile from Pala on the road to Henshaw Dam Comment
  RSA65642  Montia linearis F. W. Peirson 1925-5-18 5988 San Diego Margins of Cuyamaca Lake. 1402 Comment
  RSA65657  Montia fontana F. W. Peirson 1924-6-22 s.n. San Diego Near head of Doane Valley, Palomar Mts., San Diego Co., California. 1585 Comment
  RSA65662A  Claytonia parviflora subsp. parviflora F. W. Peirson 1925-5-15 5908 San Diego Laguna Lakes Camp, Laguna Mountains. Comment
  RSA65662B  Claytonia parviflora subsp. tenuifolia F. W. Peirson 1925-5-15 5908 San Diego Laguna Lakes Camp, Laguna Mountains. Comment
  RSA65685  Lewisia brachycalyx F. W. Peirson 1925-5-18 5990 San Diego Cuyamaca Lake, north of dam 1402 Comment
  RSA65692  Silene laciniata subsp. major F. W. Peirson 1924-6-21 4767 San Diego Benches southeast of Pala 244 Comment
  RSA65709  Silene antirrhina F. W. Peirson 1924-6-22 4785 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA65755  Stellaria nitens F. W. Peirson 1925-5-16 5923 San Diego 0.5 miles up creek from Laguna Lakes Camp Comment
  RSA65887  Aphanisma blitoides F. W. Peirson, W. L. Jepson 1927-4-19 7256 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA66011  Eriogonum plumatella F. W. Peirson 1928-4-20 7863 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA66028  Eriogonum gracile var. gracile F. W. Peirson 1932-9-14 10466 San Diego 4 miles west of Campo. 671 Comment
  RSA66093  Tropidocarpum gracile F. W. Peirson 1928-3-24 7728 San Diego Warners Hot Springs 960 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
  RSA66167  Erysimum capitatum var. capitatum F. W. Peirson 1923-3-26 4183 San Diego Near Encinitas. Comment
  RSA66173  Draba cuneifolia var. integrifolia F. W. Peirson 1928-3-24 7751 San Diego San Felipe Creek, 2 miles below Sentenac Canyon, eastern SD county. Comment
  RSA66197  Arabis pulchra F. W. Peirson 1927-4-17 7229 San Diego Summit of Mt. Springs Grade, eastern San Diego Co. 1067 Comment
  RSA66200  Arabis pulchra F. W. Peirson 1922-4-13 2864 San Diego Mountain Springs, eastern San Diego. 793 Comment
  RSA66228  Boechera californica F. W. Peirson 1926-5-1 6706 San Diego Along trail from Oak Grove to Palomar Mt. Comment
  RSA66284  Dendromecon rigida F. W. Peirson 1922-4-14 4174 San Diego Torrey Pines Park near San Diego Comment
  RSA66286  Dendromecon rigida subsp. rigida F. W. Peirson 1924-6-27 4887 San Diego near summit of Monument Peak, Laguna Mts. Comment
  RSA66301  Stylomecon heterophylla F. W. Peirson 1923-3-27 3389 San Diego Imperial Beach. Comment
  RSA66324  Polygonum punctatum F. W. Peirson 1932-9-5 10475 San Diego Henshaw reservoir. 823 Comment
  RSA66329  Polygonum amphibium var. stipulaceum F. W. Peirson 1924-6-25 4852 San Diego Little Lake, Laguna Mountains. Comment
  RSA66530  Athysanus pusillus F. W. Peirson 1925-5-15 5928 San Diego Laguna Lakes, Laguna Mountains. Comment
  RSA66565  Hymenolobus procumbens F. W. Peirson 3361 San Diego Imperial Beach. Comment
  RSA66688  Cleome isomeris F. W. Peirson 1932-9-4 10456 San Diego 3 miles east of Chula Vista. 76 Comment
  RSA66712  Streptanthus bernardinus F. W. Peirson 1924-6-25 4837 San Diego Laguna Lakes 1829 Comment
  RSA66750  Caulanthus cooperi F. W. Peirson 1922-4-13 2865 San Diego Mountain Springs, eastern San Diego. 793 Comment
  RSA66751  Caulanthus heterophyllus F. W. Peirson 1929-5-4 8345 San Diego Trail from Oak Grove to Palomar Mt. Comment
Read comments Feb 12 2009
  RSA66755  Caulanthus hallii F. W. Peirson 1929-5-4 8344 San Diego About 5 miles N of Oak Grove. 762 Comment
Read comments May 10 2017
  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
  RSA66822  Caulanthus cooperi F. W. Peirson 1928-3-24 7746 San Diego San Felipe Creek, 2 miles below Sentenac Canyon, eastern SD county. Comment
  RSA66842  Caulanthus heterophyllus F. W. Peirson 1922-4-4 2911 San Diego Torrey Pines. Comment
  RSA67134  Galium nuttallii F. W. Peirson 1923-3-26 3357 San Diego West-slopes about 2.5 miles north of Encinitas. Comment
  RSA67378  Guillenia lasiophylla F. W. Peirson 1928-3-24 7747 San Diego San Felipe Creek, 2 miles below Sentenac Canyon, eastern SD county. Comment
  RSA68620  Calochortus weedii Frank W. Peirson 1915-6-27 1663 San Diego Torrey Pines near La Jolla. Comment
  RSA68626  Calochortus splendens Frank W. Peirson 1928-6-27 4858 San Diego Near Little Lake, Laguna Mountains. Comment
  RSA68631  Calochortus splendens Frank W. Peirson 1920-6-24 2203 San Diego Morgan Hill, Palomar Mountains. 1433 Comment
  RSA68657  Zigadenus venenosus var. venenosus Frank W. Peirson 1925-5-18 5989 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains 1402 Comment
  RSA68658  Zigadenus fremontii Frank W. Peirson 1922-4-14 2912 San Diego Torrey Pines Park, near La Jolla. Comment
  RSA68660  Zigadenus venenosus var. venenosus Frank W. Peirson 1929-5-5 8361 San Diego South slope of divide between Oak Grove and Warners Hot Springs. 915 Comment
  RSA68672  Calochortus superbus Frank W. Peirson 1924-6-23 4812 San Diego Head of Doane Valley, Palomar Mountains. 1524 Comment
  RSA68675  Calochortus concolor Frank W. Peirson 1924-6-25 4859 San Diego Public camp, Laguna Lakes region, Laguna Mountains. Comment
  RSA68689  Muilla maritima F. W. Peirson 1925-5-17 5955 San Diego Lower part of Vallecito Canyon. Comment
  RSA68693  Muilla maritima F. W. Peirson 1923-3-27 5338 San Diego Mesa. About 6 miles north of San Diego. Comment
  RSA68757  Delphinium patens subsp. hepaticoideum F. W. Peirson 1925-5-16 5934 San Diego About 1 mile north of Laguna Lakes camp, Laguna Mouintains. Comment
  RSA68768  Delphinium cardinale F. W. Peirson 1924-6-22 s.n. San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA68972  Plantago erecta F. W. Peirson 1923-3-27 3378 San Diego About 6 miles north of San Diego. 122 Comment
  RSA68973  Plantago patagonica F. W. Peirson 1923-3-26 4498 San Diego 1 mile South of Torrey Pines. La Jolla. Comment
  RSA68987  Plantago patagonica F. W. Peirson 1930-5-11 8778 San Diego near Henshaw Dam. 854 Comment
  RSA68992  Anagallis minima F. W. Peirson 1927-04 7251 San Diego About bushes, along margin of sink, headland S of Torrey Pines Comment
  RSA69049  Delphinium parryi F. W. Peirson 1923-3-27 3406 San Diego Low slope about saline flat, 1/4 mile from beach; Imperial Beach. Comment
  RSA69270  Chimaphila menziesii F. W. Peirson 1924-6-22 4803 San Diego About 2 miles west of cmp, Doane Valley, Palomar Mts. 1494 Comment
  RSA69329  Rhododendron occidentale var. californicum F. W. Peirson 1924-6-22 4804 San Diego Doane Valley, Palomar Mts. 1494 Comment
  RSA69410  Delphinium parryi F. W. Peirson 1923-3-26 4170 San Diego Near Encinitas. Comment
  RSA69434  Frasera parryi F. W. Peirson 1920-6-22 872 San Diego Oak Grove, Palomar Region 854 Comment
  RSA69468  Mirabilis multiflora var. pubescens F. W. Peirson 1924-6-26 4879 San Diego Lower part of Vallecito Canyon. Comment
  RSA69500  Mirabilis laevis var. crassifolia F. W. Peirson 1922-4-14 5219 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  RSA69592  Triglochin maritima F. W. Peirson 1923-3-27 3391 San Diego Imperial Beach. Comment
  RSA69607  Boerhavia coccinea F. W. Peirson 1924-6-26 4876 San Diego Lower part of Vallecito Canyon. Comment
  RSA69610  Boerhavia triquetra F. W. Peirson 1939-11-29 12900 San Diego S side of San Felipe Canyon, just above Narrows, eastern San Diego Co. Comment
  RSA69612  Lilaea scilloides F. W. Peirson 1924-6-24 4830 San Diego South of Cuyamaca Lake. 1433 Comment
  RSA69614  Lilaea scilloides F. W. Peirson 1923-3-28 2404 San Diego Mesa about 6 miles North of San Diego. 122 Comment
  RSA69663  Juncus macrophyllus F. W. Peirson 1924-6-25 4851 San Diego Above camp [Laguna Camp?], Laguna Lakes Region, Laguna Mountains. Comment
  RSA69670  Juncus bufonius F. W. Peirson 1925-5-19 6017 San Diego Road crossing, San Luis Rey River. 915 Comment
  RSA69697  Mentzelia montana F. W. Peirson 1920-6-24 4451 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA69700  Mentzelia veatchiana F. W. Peirson 1924-6-22 4782 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA69806  Centaurium venustum F. W. Peirson 1926-4-30 6693 San Diego About 1 mile from Pala on the road to Henshaw Dam Comment
  RSA69849  Platanthera leucostachys Frank W. Peirson 1924-6-22 4787 San Diego Near the Country Club, Palomar Mountains. 1585 Comment
  RSA69924  Apocynum cannabinum F. W. Peirson 1924-6-26 4874 San Diego Lower part of Vallecito Canyon Comment
  RSA69927  Apocynum pumilum var. rhomboideum F. W. Peirson 1924-6-22 4807 San Diego Doane Valley. 1494 Comment
  RSA69993  Allionia incarnata F. W. Peirson 1927-4-14 7184 San Diego Near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Boulevard. 305 Comment
  RSA69994  Allionia incarnata F. W. Peirson 1928-4-20 7849 San Diego San Felipe creek, 2 miles west of Sentenac Canyon, eastern San Diego County. Comment
  RSA69995  Allionia incarnata F. W. Peirson 1924-6-26 4877 San Diego Lower part of Vallecito Canyon. Comment
  RSA70048  Corallorhiza maculata Frank W. Peirson 1920-6-24 1697 San Diego West of summit of Mt. Palomar, [Palomar Mountains]. 1677 Comment
  RSA70058  Juncus bufonius var. occidentalis F. W. Peirson 1923-3-27 3362 San Diego Imperial Beach. Comment
  RSA70083  Piperia cooperi Frank W. Peirson 1926-4-30 6697 San Diego About 2 miles east from Pala on the road to Henshaw Dam Comment
Read comments Dec 9 2011
  RSA70088  Piperia transversa Frank W. Peirson 1924-6-22 48802 San Diego Ca. 0.5 mile west of Country Club, Palomar Mountains. 1585 Comment
  RSA70130  Brodiaea terrestris subsp. kernensis F. W. Peirson 1924-6-23 4811 San Diego Head of Doane Valley, Palomar Mountains. 1524 Comment
  RSA70131  Brodiaea terrestris subsp. kernensis F. W. Peirson 1924-6-25 4834 San Diego near old Rangers Cabin, Laguna Lakes region, Laguna Mtns. Comment
  RSA70168  Bloomeria crocea var. crocea F. W. Peirson 1924-6-22 4798 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA70169  Bloomeria crocea F. W. Peirson 1920-6-24 6 San Diego Morgan Hill, Palomar Mountains. 1433 Comment
  RSA70198  Allium campanulatum F. W. Peirson 1925-5-18 5985 San Diego Auto Camp Grounds, Cuyamaca Lake 1402 Comment
  RSA70199  Allium campanulatum F. W. Peirson 1925-5-17 5954 San Diego Upper portion of trail to Vallecito Canyon, Laguna Mountains. Comment
  RSA70204  Allium amplectens F. W. Peirson 1925-5-18 5986 San Diego Camp ground at Cuyamaca Lake 1402 Comment
  RSA70217  Allium campanulatum F. W. Peirson 1924-6-22 4797 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA70219  Allium praecox F. W. Peirson 1922-4-14 2915 San Diego Grossmont, 10 miles east of San Diego. Comment
  RSA70223  Allium haematochiton F. W. Peirson 1922-4-14 2914 San Diego Torrey Pines Park, near La Jolla. Comment
  RSA70255  Nolina bigelovii Frank W. Peirson 1922-4-13 2852 San Diego Mountain Springs, eastern San Diego County. Comment
  RSA70270  Juncus phaeocephalus var. paniculatus F. W. Peirson 1920-6-24 1644 San Diego Morgan Hill, Palomar Mountains. 1433 Comment
  RSA70318  Juncus tiehmii F. W. Peirson 1920-6-24 1645 San Diego Morgan Hill, Palomar Mountains. 1433 Comment
  RSA70328  Asclepias eriocarpa F. W. Peirson 1924-6-24 4816 San Diego Henshaw Grade, south slope of Palomar Mts. 1524 Comment
  RSA70378  Euphorbia palmeri F. W. Peirson 1920-6-24 2201 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA70409  Arctostaphylos pungens F. W. Peirson 1929-3-31 8279 San Diego Pine Hills Lodge, near Julian. Comment
  RSA70428  Ditaxis lanceolata F. W. Peirson 1928-4-22 7877 San Diego steep rocky canyon immediately west of the Narrows, San Felipe Creek. Comment
  RSA70465  Allium parryi F. W. Peirson 1924-6-26 4853 San Diego Laguna Mountains. Lower part of Vallecito Canyon. Comment
  RSA70474  Limnanthes gracilis subsp. parishii F. W. Peirson 1925-5-18 5984 San Diego Camp ground at Cuyamaca Lake 1402 Comment
  RSA70477  Limnanthes gracilis subsp. parishii F. W. Peirson 1925-5-15 5921 San Diego Laguna Lakes, Laguna Mts., slightly North of public camp Comment
  RSA70489  Erodium brachycarpum F. W. Peirson 1923-3-27 3407 San Diego Summit of low hill about 6 miles north of San Diego on the inland route to Riverside. 122 Comment
  RSA70532  Chamaesyce melanadenia F. W. Peirson 1928-4-20 7860 San Diego San Felipe creek near foot of Sentenac Canyon , eastern San Diego Co. Comment
  RSA70537  Chamaesyce serpillifolia subsp. hirtula F. W. Peirson 1924-6-22 4777 San Diego Near the Country Club, Palomar Mountains. 1585 Comment
  RSA70542  Euphorbia eriantha F. W. Peirson 1928-3-24 7743 San Diego San Felipe Creek, 2 miles below Sentenac Canyon, eastern San Diego County. Comment
  RSA70557  Croton californicus F. W. Peirson 1924-6-22 4801 San Diego Top of ridge east of Baucher Hill, Palomar Mts. 1555 Comment
  RSA70559  Croton californicus F. W. Peirson 1923-3-26 4438 San Diego Near Encinitas. Comment
  RSA70609  Agave deserti subsp. deserti Frank W. Peirson 1928-3-24 7753 San Diego San Felipe Canyon [Banner Canyon], shortly above the Narrows Comment
  RSA70617  Chamaesyce melanadenia F. W. Peirson 1924-6-26 4865 San Diego Lower part of Vallecito Canyon Comment
  RSA70849  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1929-3-31 8280 San Diego Pine Hills Lodge, near Julian. Comment
  RSA70853  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1925-5-16 5936 San Diego Monument Peak, Laguna Mts. Comment
  RSA70857  Xylococcus bicolor F. W. Peirson 1922-4-14 830 San Diego Torrey Pines Park near San Diego Comment
  RSA70862  Arctostaphylos glauca F. W. Peirson 1927-4-18 7233 San Diego About 1/2 way from Newtown to Buckman Sps. Comment
  RSA70863  Arctostaphylos pringlei subsp. drupacea F. W. Peirson 1924-6-27 4885 San Diego near summit of Monument Peak, Laguna Mts. Comment
  RSA70864  Arctostaphylos pringlei subsp. drupacea F. W. Peirson 1926-5-1 6716 San Diego Below summit of Palomar Mt. on east trail to Oak Grove. Comment
Read comments Jul 27 2010
  RSA70866  Arctostaphylos pringlei subsp. drupacea F. W. Peirson 1925-5-16 5937 San Diego Monument Peak, Laguna Mts. Comment
  RSA70869  Arctostaphylos pringlei subsp. drupacea F. W. Peirson 1920-5-24 2197 San Diego east trail to Palomar Mt. 1738 Comment
  RSA70878  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1929-3-31 8284 San Diego Foster Grade, east of Julian. Comment
  RSA70879  Arctostaphylos glandulosa var. adamsii F. W. Peirson 1929-5-4 8360 San Diego On trail from Oak Grove to Palomar Mtn. 1067 Comment
  RSA70880  Arctostaphylos glandulosa subsp. glandulosa F. W. Peirson 1926-5-1 6717 San Diego Along trail from Oak Grove to Palomar Mt. 1524 Comment
  RSA71013  Dichondra occidentalis F. W. Peirson 1927-4-19 7250 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA71124  Calystegia occidentalis subsp. fulcrata F. W. Peirson 1924-6-22 4776 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA71801  Gilia stellata F. W. Peirson 1928-3-24 7750 San Diego San Felipe Canyon Comment
Read comments Oct 23 2011
  RSA71805  Gilia stellata F. W. Peirson 1922-4-13 2861 San Diego Mountain Springs, eastern San Diego County. Comment
  RSA71806  Gilia stellata F. W. Peirson 1928-4-21 7866 San Diego San Felipe Creek near jct. of Grapevine Canyon and foot of Sentenac Canyon. Comment
  RSA71808  Ipomopsis tenuifolia F. W. Peirson 1927-4-17 7222 San Diego Just north of Boulevard, at head of Mountain Springs Grade. 1067 Comment
  RSA71816  Saltugilia australis F. W. Peirson 1929-5-4 8343 San Diego About 5 miles N of Oak Grove. 762 Comment
Read comments May 10 2017
  RSA71831  Saltugilia australis F. W. Peirson 1929-5-4 8342 -a San Diego About 5 miles N of Oak Grove. 762 Comment
Read comments May 10 2017
  RSA71861  Allophyllum gilioides F. W. Peirson 1925-5-15 5917 San Diego Laguna Lakes, Laguna Mountains 1829 Comment
  RSA71862  Allophyllum glutinosum F. W. Peirson 1930-5-10 8777 San Diego 4 miles south of Oak Grove, eastern San Diego Co. Comment
  RSA71882  Gilia diegensis F. W. Peirson 1920-6-24 2294 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA71911  Navarretia capillaris F. W. Peirson 1924-6-22 4772 San Diego Near head of Doane Valley, Palomar Mts., San Diego Co., California. 1585 Comment
  RSA71947  Collomia grandiflora F. W. Peirson 1924-6-25 4839 San Diego Laguna Mts., Laguna Lakes Region, near auto camp. 1829 Comment
  RSA71950  Collomia grandiflora F. W. Peirson 1920-6-24 911 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA72088  Microsteris gracilis subsp. gracilis F. W. Peirson 1925-5-15 5912 San Diego Laguna Lakes Auto Camp. 1829 Comment
  RSA72112  Epilobium brachycarpum F. W. Peirson 1932-9-4 10473 San Diego Cuyamaca Lake 1433 Comment
  RSA72202  Camissonia bistorta F. W. Peirson 1923-3-27 3410 San Diego Otay Creek. 2 miles below dam. 76 Comment
  RSA72243  Camissonia claviformis subsp. peirsonii F. W. Peirson 1928-4-20 7856 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA72257  Camissonia cheiranthifolia subsp. suffruticosa F. W. Peirson 1923-3-26 3408 San Diego Agua Hedionda Comment
  RSA72310  Gilia diegensis F. W. Peirson 1925-5-16 5930 San Diego About 1 mile north of Laguna Lakes camp, Laguna Mouintains. Comment
  RSA72313  Gilia diegensis F. W. Peirson 1925-5-15 5903 San Diego 4 miles south of Buckman Spring. 1159 Comment
  RSA72643  Wyethia mollis F. W. Peirson 1920-6-24 2784 San Diego Meadow east of Morgan Hill; Palomar Mts 1433 Comment
  RSA73015  Leptosiphon pygmaeus subsp. pygmaeus F. W. Peirson 1925-5-15 5924 San Diego Laguna Lakes, Laguna Mountains 1829 Comment
  RSA73040  Linanthus bigelovii F. W. Peirson 1927-4-17 7231 San Diego Summit of Mt. Springs Grade, eastern San Diego Co. 1067 Comment
  RSA73043  Leptosiphon androsaceus F. W. Peirson 1922-4-14 2878 San Diego South slope; Point Loma, San Diego Co., California Comment
  RSA73044  Leptosiphon androsaceus F. W. Peirson 1923-3-27 3390 San Diego Low slope about saline flat, 1/4 mile from beach; Imperial Beach. Comment
  RSA73050  Leptosiphon androsaceus F. W. Peirson 1924-6-24 4817 San Diego Henshaw Grade, south slope of Palomar Mts. 1524 Comment
  RSA73051  Leptosiphon androsaceus F. W. Peirson 1925-5-18 5978 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains. 1402 Comment
  RSA73052  Leptosiphon androsaceus F. W. Peirson 1929-5-5 73052 San Diego South slope of divide between Oak Grove and Warner's Hot Springs. 915 Comment
  RSA73059  Leptosiphon ciliatus F. W. Peirson 1920-6-24 2172 San Diego Meadow at foot of Morgan Hill, Palomar Mts. Comment
  RSA73074  Leptosiphon liniflorus F. W. Peirson 1920-6-25 4712 San Diego Southwest of Warners Springs. Comment
  RSA73088  Linanthus dianthiflorus subsp. dianthiflorus F. W. Peirson 1923-3-27 4197 San Diego edge of saline flat, 1/4 mile from Imperial Beach. Comment
  RSA73090  Linanthus dianthiflorus subsp. dianthiflorus F. W. Peirson 1929-5-4 8341 San Diego About 5 miles N of Oak Grove. 762 Comment
Read comments May 10 2017
  RSA73127  Navarretia hamata F. W. Peirson 1924-6-21 4770 San Diego Benches southeast of Pala 244 Comment
  RSA73129  Navarretia atractyloides F. W. Peirson 1924-6-21 4769 San Diego Benches southeast of Pala 244 Comment
  RSA73132  Navarretia hamata F. W. Peirson 1915-6-27 954 San Diego Torrey Pines. Comment
  RSA73145  Navarretia hamata F. W. Peirson 1920-6-25 2196 San Diego Grae east of Ramona, San Diego Co., California Comment
  RSA73286  Linanthus pungens subsp. hallii F. W. Peirson 1927-4-17 7227 San Diego South of boulevard on Mountain Springs Grade 1128 Comment
  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
Read comments Feb 3 2012
  RSA73687  Linanthus orcuttii subsp. pacificus F. W. Peirson 1920-6-24 2173 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA73732  Navarretia intertexta F. W. Peirson 1924-6-24 4827 San Diego Margin of Cuyamaca Lake. 1402 Comment
  RSA74198  Phacelia minor F. W. Peirson 1928-4-20 7929 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA74725  Nama demissa var. deserti F. W. Peirson 1922-4-13 985 San Diego Mountain Springs grade east of Jacumba; eastern San Diego. 1067 Comment
  RSA74796  Phacelia pedicellata F. W. Peirson 1928-4-22 7876 San Diego The Narrows, San Felipe Creek, eastern San Diego County. Comment
  RSA74797  Phacelia pedicellata F. W. Peirson 1928-4-20 7864 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA74808  Phacelia parryi F. W. Peirson 1930-5-11 8787 San Diego San Luis Rey River. 610 Comment
  RSA74933  Phacelia distans F. W. Peirson 1928-4-20 7859 San Diego 2 miles S of San Felipe Creek, near mouth of Sentenac Canyon, Eastern San Diego County. Comment
  RSA74942  Phacelia davidsonii F. W. Peirson 1925-5-15 5915 San Diego Public Camp, laguna Mts 1677 Comment
  RSA74943  Phacelia curvipes F. W. Peirson 1926-5-1 6709 San Diego East trail from Oak Grove to Palomar Mt. 1524 Comment
  RSA74952  Phacelia distans F. W. Peirson 1923-3-26 3384 San Diego Agua Hedionda Comment
  RSA74955  Phacelia curvipes F. W. Peirson 1929-5-4 8354 San Diego Along trail from Oak Grove to Palomar Mt. 1372 Comment
  RSA75123  Nemacladus glanduliferus F. W. Peirson 1928-4-20 7865 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA75126  Nemacladus pinnatifidus F. W. Peirson 1925-5-15 5899 San Diego 4 mi. south of Buckman Springs, eastern San Diego Co. Comment
  RSA75131  Nemacladus pinnatifidus F. W. Peirson 1929-5-4 8358 San Diego On trail from Oak Grove to Palomar Mtn. 1067 Comment
  RSA75133  Nemacladus ramosissimus F. W. Peirson 1925-5-15 5898 San Diego 4 miles south of Buckman Springs. 1220 Comment
  RSA75143  Nemacladus longiflorus var. longiflorus F. W. Peirson 1920-6-24 2184 San Diego East trail up to Palomar Mountain 1707 Comment
  RSA75385  Camissonia strigulosa F. W. Peirson 1924-6-24 4819 San Diego Henshaw Grade, Palomar Mts. 1220 Comment
  RSA75386  Camissonia cardiophylla F. W. Peirson 1928-4-22 7882 San Diego steep rocky canyon immediately west of the Narrows, San Felipe Creek. Comment
  RSA75444  Camissonia lewisii F. W. Peirson 1923-3-26 3409 San Diego Agua Hedionda Comment
  RSA75509  Phacelia brachyloba F. W. Peirson 1929-5-4 8349 San Diego trail from Oak Grove to Palomar Mt. Comment
  RSA75513  Phacelia affinis F. W. Peirson 1925-5-15 5906 San Diego 4 mi. south of Buckman Springs, eastern San Diego Co. Comment
  RSA75818  Pholistoma membranaceum F. W. Peirson 1928-4-20 s.n. San Diego On summit of low hill on San Felipe Creek, about 2 miles W Sentenac Canyon. Comment
  RSA75868  Nemophila menziesii var. menziesii F. W. Peirson 1929-3-31 8286 San Diego Foot of flat below Banner, Foster Grade east of Julian. Comment
  RSA75875  Nemophila menziesii F. W. Peirson 1929-5-4 8353 San Diego Trail from Oak Grove to Palomar Mountain. 1296 Comment
  RSA75878  Nemophila menziesii var. integrifolia F. W. Peirson 1925-5-12 s.n. San Diego Potrero Grade 686 Comment
  RSA75879  Nemophila menziesii var. integrifolia F. W. Peirson 1925-5-15 5902 San Diego 4 miles south of Buckman Springs. 1220 Comment
  RSA75880  Nemophila menziesii var. integrifolia F. W. Peirson 1930-5-11 8781 San Diego Henshaw Dam. 854 Comment
  RSA75989  Eucrypta chrysanthemifolia var. bipinnatifida F. W. Peirson 1928-4-20 7844 San Diego San Felipe creek, 2 miles west of Sentenac Canyon, eastern San Diego County. Comment
  RSA76239  Eriastrum eremicum F. W. Peirson 1928-4-22 7873 San Diego San Felipe Creek about 4 miles below Sentenac Canyon. Comment
  RSA76781  Saltugilia caruifolia F. W. Peirson 1920-6-24 2295 San Diego Trail from Oak Grove to Palomar Mountain 1677 Comment
  RSA76936  Simmondsia chinensis F. W. Peirson 1923-3-27 3399 San Diego About 1/4 mile back from Imperial Beach. Comment
  RSA76956  Stillingia linearifolia F. W. Peirson 1925-5-20 6009 San Diego About 2 miles north of Oak Grove, San Diego. Comment
  RSA76969  Ziziphus parryi F. W. Peirson 1928-3-24 7731 San Diego San Felipe Creek, Sentenac Canyon, eastern San Diego Co. Comment
  RSA77041  Sphaeralcea ambigua subsp. rosacea F. W. Peirson 1925-5-15 5888 San Diego summit of Mountain Springs Grade, eastern San Diego [County.] 1067 Comment
  RSA77074  Langloisia setosissima subsp. setosissima F. W. Peirson 1927-4-14 7187 San Diego Near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Boulevard. 305 Comment
  RSA77082  Cneoridium dumosum F. W. Peirson 1922-4-14 2030 San Diego Torrey Pines, Comment
  RSA77087  Thamnosma montana F. W. Peirson 1928-3-24 7738 San Diego San Felipe Creek, near foot of Sentenac Canyon, eastern San Diego Co. Comment
  RSA77150  Ceanothus foliosus var. foliosus F. W. Peirson 1924-6-24 4823 San Diego dry slope under pines, Scenic View, 5 mi. north of Cuyamaca Lake on road o Julian. 1448 Comment
  RSA77157  Ceanothus leucodermis F. W. Peirson 1929-3-31 8281 San Diego Foster Grade, east of Julian. Comment
  RSA77159  Ceanothus leucodermis F. W. Peirson 1920-6-24 2319 San Diego West slpoe. 1753 Comment
  RSA77160  Ceanothus leucodermis F. W. Peirson 1926-5-1 6712 San Diego Along trail from Oak Grove to Palomar Mt. Comment
  RSA77166  Ceanothus leucodermis F. W. Peirson 1925-5-17 5950 San Diego Lower part of Vallecito Canyon. Comment
  RSA77174  Bursera microphylla F. W. Peirson 1941-4-7 13071 San Diego 6-7 miles south of San Felipe Boulevard, the road junction about 10 miles below the Narrows, eastern San Diego Co. Comment
Read comments Mar 9 2012
  RSA77190  Horsfordia newberryi Mabel Peirson 1928-3-24 7748 San Diego San Felipe Creek about 2 miles below Sentenac Canyon Comment
Read comments Feb 5 2014
  RSA77191  Horsfordia newberryi F. W. Peirson 1928-4-22 7874 San Diego San Felipe Creek about 4 miles below Sentenac Canyon. Comment
  RSA77223  Fremontodendron californicum F. W. Peirson 1925-5-17 5941 San Diego Lower part of Vallecito Canyon. 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
Read comments Nov 21 2011
  RSA77231  Eriodictyon trichocalyx var. lanatum F. W. Peirson 1924-6-27 4883 San Diego near summit of Monument Peak, Laguna Mts. Comment
  RSA77240  Eriodictyon crassifolium F. W. Peirson 1923-3-26 3383 San Diego 0.5 mile north of Encinitas. Comment
  RSA77339  Ceanothus tomentosus F. W. Peirson 1923-3-26 4443 San Diego 0.5 mile north of Encinitas. Comment
  RSA77344  Ceanothus tomentosus var. olivaceus F. W. Peirson 1929-3-31 8283 San Diego Banner Canyon east of Julian. 1067 Comment
  RSA77357  Ceanothus cuneatus F. W. Peirson 1926-5-1 6718 San Diego Public Camp Grounds, Oak Grove, Northeastern San Diego County. 854 Comment
  RSA77417  Citrullus lanatus F. W. Peirson 1923-9-10 4047 San Diego 3 mi. from coast at Torrey Pines Comment
  RSA77699  Ceanothus leucodermis F. W. Peirson 1929-5-4 8359 San Diego Oak Grove 869 Comment
  RSA77701  Ceanothus palmeri F. W. Peirson 1925-5-16 5931 San Diego About 1 mile north of Laguna Lakes camp, Laguna Mouintains. 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
  RSA77711  Ceanothus greggii var. perplexans F. W. Peirson 1928-3-24 7729 San Diego Grade going down into San Felipe Creek 915 Comment
  RSA77712  Ceanothus greggii var. perplexans F. W. Peirson 1929-3-31 8282 San Diego Along central part of Foster Grade east of Julian Comment
  RSA77713  Ceanothus greggii var. perplexans F. W. Peirson 1925-5-16 5939 San Diego Below summit of Monument Peak, Laguna Mountains Comment
  RSA77716  Ceanothus greggii var. perplexans F. W. Peirson 1920-6-24 2722 San Diego Oak Grove, east base of Palomar Mountains Comment
  RSA77727  Viola purpurea subsp. purpurea F. W. Peirson 1925-5-15 s.n. San Diego Laguna Lakes, Laguna Mts. Comment
  RSA77729  Viola purpurea subsp. mohavensis F. W. Peirson 1929-5-4 8356 San Diego Along trail from Oak Grove to Palomar Mt. 1372 Comment
  RSA77731  Viola purpurea subsp. quercetorum F. W. Peirson 1930-5-11 8780 San Diego near Henshaw Dam. 854 Comment
  RSA77741  Viola nephrophylla F. W. Peirson 1925-5-19 6001 San Diego along stream between Middle Peak and South Peak. 1524 Comment
  RSA77753  Viola lobata F. W. Peirson 1924-6-24 4824 San Diego dry slope under pines, Scenic View, 5 mi. north of Cuyamaca Lake on road to Julian. 1448 Comment
  RSA77755  Viola lobata F. W. Peirson 1925-5-19 5996 San Diego Middle Peak, Cuyamaca Mountains, eastern San Diego County 1677 Comment
  RSA77764  Viola douglasii F. W. Peirson 1925-5-18 5969 San Diego Margins of Cuyamaca Lake. 1402 Comment
  RSA77767  Viola douglasii F. W. Peirson 1925-5-15 5920 San Diego Laguna Lakes, Laguna Mountains. Comment
  RSA77810  Pholisma arenarium F. W. Peirson 1939-11-25 12902 San Diego San Felipe canyon just above the Narrows, eastern San Diego County. Comment
  RSA77811  Pholisma arenarium F. W. Peirson 1922-4-13 2906 San Diego Mountain Springs, eastern San Diego County. Comment
  RSA77849  Callitriche marginata F. W. Peirson 1923-3-28 3367 San Diego Mesa about 6 miles North of San Diego. 122 Comment
  RSA77864  Pectocarya platycarpa F. W. Peirson 1922-4-13 2854 San Diego Mountain Springs Grade, eastern San Diego County on road to Imperial Valley from San Diego. 366 Comment
  RSA77868  Pectocarya linearis subsp. ferocula F. W. Peirson 1923-3-27 3359 San Diego Summit of low hill about 6 miles north of San Diego on the inland route to Riverside. 122 Comment
  RSA79587  Plagiobothrys tenellus F. W. Peirson 1925-5-15 5911 San Diego Laguna Lakes, Laguna Mts. Comment
  RSA79590  Cryptantha barbigera F. W. Peirson 1925-5-15 5890 San Diego summit of Mountain Springs Grade, eastern San Diego 1067 Comment
  RSA79597  Cryptantha circumscissa F. W. Peirson 1925-5-15 5892 San Diego summit of Mountain Springs Grade, eastern San Diego 1067 Comment
  RSA79607  Cryptantha intermedia F. W. Peirson 1924-6-22 4779 San Diego Country Club, Palomar Mts. Comment
  RSA79612  Cryptantha intermedia F. W. Peirson 1927-4-19 7245 San Diego Headland south of Torrey Pines, Comment
  RSA79765  Penstemon centranthifolius F. W. Peirson 1928-3-24 7730 San Diego San Felipe Creek, on road to Julian. 777 Comment
  RSA79798  Collinsia childii F. W. Peirson 1920-6-24 2190 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA79826  Keckiella antirrhinoides subsp. microphylla F. W. Peirson 1925-5-17 5952 San Diego Vallecito Canyon, eastern San Diego Co. Comment
  RSA79840  Penstemon heterophyllus var. australis F. W. Peirson 1924-6-24 4826 San Diego Margin of Cuyamaca Lake. 1402 Comment
  RSA79849  Penstemon labrosus F. W. Peirson 1924-6-22 4790 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA79958  Cryptantha micrantha var. lepida F. W. Peirson 1922-4-13 2885 San Diego Mountain Springs grade east of Jacumba; eastern San Diego 1067 Comment
  RSA79963  Cryptantha micrantha var. lepida F. W. Peirson 1924-6-25 4849 San Diego Above camp [Laguna Camp?], Laguna Lakes Region, Laguna Mountains. Comment
  RSA80002  Amsinckia spectabilis F. W. Peirson 1923-3-26 4056 San Diego Saline flat back of beach, Agua Hedionda. Comment
  RSA80012  Cryptantha micrantha var. lepida F. W. Peirson 1920-6-24 2167 San Diego Meadow east of Morgan Hill; Palomar Mts 1433 Comment
  RSA80053  Veronica peregrina subsp. xalapensis F. W. Peirson 1920-6-24 4496 San Diego East foot of Morgan Hill, Palomar Mts. 1433 Comment
  RSA80062  Mimulus diffusus F. W. Peirson 1920-6-24 2183 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA80080  Mimulus diffusus F. W. Peirson 1925-5-15 5919 San Diego Laguna Lakes 1677 Comment
  RSA80146  Mimulus bigelovii var. bigelovii F. W. Peirson 1928-3-24 7735 San Diego San Felipe Creek, Sentenac Canyon, eastern San Diego Co. Comment
  RSA80157  Plagiobothrys acanthocarpus F. W. Peirson 1923-3-27 3385 San Diego Mesa. About 6 miles north of San Diego. Comment
  RSA80162  Collinsia heterophylla F. W. Peirson 1927-4-19 7240 San Diego Headland south of Torrey Pines, Comment
  RSA80167  Collinsia heterophylla F. W. Peirson 1923-3-27 3370 San Diego Otay Creek. 46 Comment
  RSA80171  Collinsia heterophylla F. W. Peirson 1925-5-19 6002 San Diego 1 mile south of Morettis, northern San Diego Co. (south of Henshaw Lake) 930 Comment
  RSA80176  Antirrhinum nuttallianum subsp. nuttallianum F. W. Peirson 1929-5-4 8346 San Diego On trail from Oak Grove to Palomar Mtn. 1067 Comment
  RSA80177  Antirrhinum nuttallianum subsp. nuttallianum F. W. Peirson 1923-3-26 3415 San Diego Agua Hedionda Comment
  RSA80178  Antirrhinum nuttallianum subsp. subsessile F. W. Peirson 1922-4-14 1099 San Diego Torrey Pines Park near San Diego Comment
  RSA80179  Antirrhinum nuttallianum subsp. nuttallianum F. W. Peirson 1924-6-21 4764 San Diego Grade north of Pala. 229 Comment
  RSA80180  Antirrhinum nuttallianum subsp. nuttallianum F. W. Peirson 1912-9-2 1100 San Diego SoladadInlet Comment
  RSA80184  Antirrhinum coulterianum F. W. Peirson 1925-5-15 5897 San Diego 10 miles northwest of Jacumba Comment
  RSA80185  Antirrhinum coulterianum F. W. Peirson 1924-6-22 4788 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA80202  Plagiobothrys bracteatus F. W. Peirson 1923-3-28 3386 San Diego About 6 miles north of San Diego Comment
  RSA80220  Plagiobothrys collinus var. fulvescens F. W. Peirson 1920-6-24 2732 San Diego Meadow east of Morgan Hill; Palomar Mts 1433 Comment
  RSA80221  Penstemon clevelandii F. W. Peirson 1928-3-24 7732 San Diego San Felipe Creek, Sentenac Canyon. Comment
  RSA80225  Penstemon clevelandii subsp. connatus F. W. Peirson 1925-5-17 5957 San Diego At foot of steep part of trail from Vallecito Canyon to Laguna Mountains Comment
  RSA80226  Penstemon clevelandii F. W. Peirson 1927-4-17 7224 San Diego North of Boulevard, summit of Mountain Springs Grade. Comment
  RSA80307  Orthocarpus densiflorus var. gracilis F. W. Peirson 1923-3-27 3372 San Diego Otay Creek. 30 Comment
  RSA80319  Orthocarpus densiflorus var. gracilis F. W. Peirson 1927-4-19 7247 San Diego Headland South of Torrey Pines Comment
  RSA80324  Orthocarpus densiflorus var. gracilis F. W. Peirson 1925-5-18 5967 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains. 1402 Comment
  RSA80325  Lycium andersonii F. W. Peirson 1927-4-17 7228 San Diego Summit of Mt. Springs Grade, eastern San Diego Co. 1067 Comment
  RSA80340  Orthocarpus densiflorus var. gracilis F. W. Peirson 1926-4-30 6703 San Diego Oprn grassy field near Henshaw Dam, northeastern San Diego Co. 854 Comment
  RSA80374  Solanum umbelliferum F. W. Peirson 1924-6-24 4831 San Diego rocky places, road northeast of Decanso. Comment
  RSA80378  Solanum parishii F. W. Peirson 1923-3-26 3380 San Diego 0.5 mile north of Encinitas. Comment
  RSA80388  Solanum umbelliferum F. W. Peirson 1926-5-1 6720 San Diego Bottom lands of temecula River, Oak grove. 854 Comment
  RSA80424  Linaria canadensis var. texana F. W. Peirson 1927-4-19 7243 San Diego Headland South of Torrey Pines Comment
  RSA80442  Mimulus fremontii F. W. Peirson 1925-5-15 5901 San Diego 4 mi. south of Buckman Springs, eastern San Diego Co. Comment
  RSA80443  Mimulus fremontii F. W. Peirson 1926-5-1 6721 San Diego Oak Grove, northeastern San Diego Co. Comment
  RSA80642  Boisduvalia densiflora F. W. Peirson 1920-6-25 2194 San Diego Moretti s south of Warner s Hot Springs. 884 Comment
  RSA80654  Hypericum androsaemum F. W. Peirson 1924-6-22 4774 San Diego Country Club, Palomar Mts. Comment
  RSA80673  Helianthemum scoparium var. aldersonii F. W. Peirson 1924-6-24 4820 San Diego Henshaw Grade, Palomar Mts. 1219 Comment
  RSA80679  Helianthemum scoparium var. aldersonii F. W. Peirson 1925-5-12 5820 San Diego Potrero Grade 686 Comment
  RSA80680  Helianthemum scoparium var. aldersonii F. W. Peirson 1920-6-23 2170 San Diego Oak Grove 854 Comment
  RSA80697  Hypericum formosum var. scouleri F. W. Peirson 1924-6-22 4775 San Diego Near the Country Club, Palomar Mountains. 1585 Comment
  RSA80723  Mimulus pilosus F. W. Peirson 1920-6-24 269 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA80728  Nicotiana obtusifolia F. W. Peirson 1928-3-24 7742 San Diego San Felipe Creek, ca 2 miles below Sentenac Canyon, western Colorado Desert. Comment
  RSA80760  Cryptantha nevadensis F. W. Peirson 1922-4-13 2857 San Diego Mountain Springs, eastern San Diego County. Comment
  RSA80767  Petunia parviflora F. W. Peirson 1920-6-25 2207 San Diego Road from Warners Hot Springs to Oak Grove, on San Luis Rey River. 915 Comment
  RSA80829  Pedicularis densiflora F. W. Peirson 1922-4-29 4063 San Diego 1 mile east of Dripping Springs, Temecula River. 518 Comment
Read comments Dec 13 2012
  RSA80840  Orthocarpus attenuatus F. W. Peirson 1925-5-18 5966 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains. 1402 Comment
  RSA81008  Tamarix parviflora F. W. Peirson 1923-3-28 4110 San Diego On boulevard about 10-15 miles south opf Temecula Comment
  RSA81464  Castilleja applegatei subsp. martinii F. W. Peirson 1924-6-25 4846 San Diego Laguna Lakes Region, Laguna Mountains. Comment
  RSA81465  Castilleja applegatei subsp. martinii F. W. Peirson 1929-5-4 8357 San Diego Trail from Oak Grove to Palomar Mountain. 1296 Comment
  RSA81466  Castilleja applegatei subsp. martinii F. W. Peirson 1925-5-16 5938 San Diego Monument Peak, Laguna Mts. Comment
  RSA81470  Castilleja applegatei subsp. martinii F. W. Peirson 1926-5-1 6705 San Diego Along trail from Oak Grove to Palomar Mt. Comment
  RSA81471  Castilleja applegatei subsp. martinii F. W. Peirson 1920-6-24 2174 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA82010  Justicia californica F. W. Peirson 1928-3-24 7736 San Diego San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA82052  Cordylanthus rigidus subsp. setiger F. W. Peirson 1932-9-4 10464 San Diego 7 miles west of Campo. 671 Comment
  RSA82102  Mimulus clevelandii F. W. Peirson 1925-5-18 5960 San Diego Lower part of grade from Guatay to Laguna Mountains. Comment
  RSA82103  Mimulus aurantiacus var. aridus F. W. Peirson 1927-4-17 7223 San Diego Just north of Boulevard, at head of Mountain Springs Grade. 1067 Comment
  RSA82106  Mimulus aurantiacus var. puniceus F. W. Peirson 1922-4-14 1147 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  RSA82189  Trichostema parishii F. W. Peirson 1925-5-18 5961 San Diego Lower part of grade from Guatay to Laguna Mountains. Comment
  RSA82192  Trichostema parishii F. W. Peirson 1924-6-24 4818 San Diego Henshaw Grade, Palomar Mts. 1220 Comment
  RSA82201  Trichostema austromontanum subsp. austromontanum F. W. Peirson 1920-6-24 2200 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA82222  Verbena menthifolia F. W. Peirson 1923-3-27 3379 San Diego Otay Creek. 2 miles below dam and at about 250 ft. 76 Comment
  RSA82235  Castilleja affinis F. W. Peirson 1927-4-19 7249 San Diego Headland South of Torrey Pines Comment
  RSA82251  Castilleja miniata F. W. Peirson 1924-6-25 4844 San Diego Laguna Mountains: Meadow near Laguna Lakes. 1524 Comment
Read comments Jan 31 2008
  RSA82278  Castilleja foliolosa F. W. Peirson 1928-4-21 7868 San Diego in channel of small gulley on south slope of San Felipe Canyon, eastern San Diego Co. Comment
  RSA82279  Castilleja foliolosa F. W. Peirson 1922-4-14 2890 San Diego Torrey Pines Park near San Diego Comment
  RSA82331  Scutellaria bolanderi subsp. austromontana F. W. Peirson 1920-6-25 2195 San Diego Near bridge at Moretti s southeast of Henshaw Lake 884 Comment
  RSA82393  Salvia clevelandii F. W. Peirson 1912-9-3 1057 San Diego Coast near La Jolla. Comment
  RSA82394  Salvia clevelandii F. W. Peirson 1915-6-27 1053 San Diego Torrey Pines. Comment
  RSA82395  Salvia clevelandii F. W. Peirson 1924-6-24 4822 San Diego Henshaw Grade, south slope of Palomar Mountains 1067 Comment
  RSA82460  Salvia vaseyi F. W. Peirson 1928-4-22 7872 San Diego On canyon slope opposite Yaqui Spring, San Felipe Canyon. Comment
  RSA82517  Limosella acaulis F. W. Peirson 1924-6-25 4841 San Diego border of Little Lake. Comment
  RSA82565  Stachys rigida subsp. quercetorum F. W. Peirson 1932-9-4 10465 San Diego 7 miles west of Campo. 671 Comment
  RSA82567  Stachys rigida subsp. quercetorum F. W. Peirson 1927-4-19 7236 San Diego Headland south of Torrey Pines, Comment
  RSA82569  Stachys rigida subsp. quercetorum F. W. Peirson 1924-6-25 4860 San Diego Laguna Mountains: Meadow near Laguna Lakes. 1524 Comment
  RSA82570  Stachys rigida subsp. quercetorum F. W. Peirson 1920-6-25 2193 San Diego from Oak Grove to Warners Hot Springs. 915 Comment
  RSA83328  Monardella macrantha subsp. hallii F. W. Peirson 1920-6-24 2176 San Diego East trail to Palomar Mountains 1601 Comment
  RSA83419  Dudleya saxosa subsp. aloides F. W. Peirson 1924-6-23 4813 San Diego N slope of Doane Valley, Palomar Mts. 1524 Comment
  RSA83422  Monardella nana subsp. tenuiflora F. W. Peirson 1920-6-24 2177 San Diego On east trail to Palomar Mtn. 1677 Comment
  RSA83926  Ranunculus californicus F. W. Peirson 1924-6-22 4794 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA83930  Ranunculus californicus F. W. Peirson 1923-3-27 4173 San Diego north slope, Otay Creek 61 Comment
  RSA83937  Ranunculus californicus F. W. Peirson 1925-5-15 5909 San Diego Laguna Lakes, Laguna Mountains. Comment
  RSA83945  Ranunculus californicus F. W. Peirson 1920-6-24 2660 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA84225  Dudleya variegata F. W. Peirson 1922-4-14 3094 San Diego Slightly south of Torrey Pines Comment
  RSA84267  Ranunculus aquatilis var. capillaceus F. W. Peirson 1924-6-27 4864 San Diego ponds at Laguna Lakes 1524 Comment
  RSA84268  Ranunculus aquatilis var. capillaceus F. W. Peirson 1920-6-25 2204 San Diego above water line at Morettis south of Henshaw Lake 884 Comment
  RSA84317  Isoetes howellii F. W. Peirson 1923-3-28 3366 San Diego near boulevard on mesa about 6 miles north of San Diego 121 Comment
  RSA84369  Lithophragma affine subsp. mixtum F. W. Peirson 1926-5-1 6704 San Diego East trail from Oak Grove to Palomar Mt. 1524 Comment
  RSA84386  Lithophragma affine subsp. mixtum F. W. Peirson 1925-5-15 5916 San Diego Laguna Lakes, Laguna Mountains. Comment
  RSA84452  Anemone tuberosa F. W. Peirson 1927-4-17 7226 San Diego On north side of boulevard at head of Mountain Springs Grade, eastern San Diego Co. Comment
  RSA84470  Clematis pauciflora F. W. Peirson 1927-4-17 s.n. San Diego South of boulevard at summit of Mountain Springs Grade, eastern San Diego. Comment
  RSA84471  Clematis pauciflora F. W. Peirson 1925-5-17 s.n. San Diego Lower Vallecito Canyon, east base of Laguna Mountains. Comment
  RSA84472  Clematis pauciflora F. W. Peirson 1923-3-27 s.n. San Diego Mesa. About 6 miles north of San Diego. 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
  RSA84942  Ribes roezlii F. W. Peirson 1926-5-1 6715 San Diego Sour Dough Spring, east trail from Palomar Mt. to Oak Grove. Comment
  RSA84974  Ribes roezlii F. W. Peirson 1925-5-17 5948 San Diego Upper portion of trail to Vallecito Canyon, Laguna Mountains. Comment
  RSA85064  Adenostoma sparsifolium F. W. Peirson 1932-9-4 10471 San Diego Clearing between Campo and Buckman Springs, southeastern San Diego Co. 671 Comment
  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
  RSA85234  Horkelia clevelandii F. W. Peirson 1924-6-22 4780 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA85553  Cheilanthes clevelandii F. W. Peirson 1920-6-24 2181 San Diego On east trail to Palomar Mtn. 1524 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
  RSA85695  Potentilla gracilis F. W. Peirson 1924-6-22 4805 San Diego Doane Valley. 1494 Comment
  RSA85733  Potentilla gracilis var. fastigiata F. W. Peirson 1920-6-24 2182 San Diego East trail up to Palomar Mountain 1707 Comment
  RSA85871  Fragaria californica F. W. Peirson 1925-5-19 5997 San Diego Middle Peak, Cuyamaca Mountains, eastern San Diego County 1616 Comment
  RSA85928  Marsilea vestita F. W. Peirson 1925-5-18 5968 San Diego North shore of Cyamaca Lake 1402 Comment
  RSA85950  Pentagramma triangularis subsp. viscosa F. W. Peirson 1922-4-14 2888 San Diego Torrey Pines Park, near La Jolla. Comment
  RSA86660  Sanguisorba annua F. W. Peirson 1924-6-24 4828 San Diego South of Cuyamaca Lake. 1433 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
  RSA86671  Cercocarpus betuloides F. W. Peirson 1924-6-26 4872 San Diego At lower part of steep portion of trail in Vallecito Canyon, east base of Laguna Mountains. 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
  RSA86766  Deschampsia danthonioides F. W. Peirson 1925-5-18 5993 San Diego Camp ground at Cuyamaca Lake 1402 Comment
  RSA86778  Gastridium phleoides F. W. Peirson 1926-4-30 6699 San Diego About 2 miles east from Pala on the road to Henshaw Dam Comment
  RSA86791  Rosa gymnocarpa F. W. Peirson 1924-6-22 4806 San Diego Doane Valley. 1494 Comment
  RSA86800  Rosa californica F. W. Peirson 1925-5-17 s.n. San Diego At foot of steep part of trail from Vallecito Canyon to Laguna Mountains Comment
  RSA86817  Amelanchier utahensis F. W. Peirson 1925-5-17 5943 San Diego Upper portion of trail to Vallecito Canyon, Laguna Mountains. Comment
  RSA86834  Rubus ursinus F. W. Peirson 1924-6-24 4814 San Diego Henshaw Grade, south slope of Palomar Mts. 1524 Comment
  RSA86843  Prunus virginiana var. demissa F. W. Peirson 1925-5-19 5983 San Diego Along road near Cuyamaca Lake. 1402 Comment
  RSA86855  Prunus fremontii F. W. Peirson 1922-4-13 2895 San Diego Near Mountain Springs. 793 Comment
  RSA86857  Prunus fremontii F. W. Peirson 1929-3-31 8285 San Diego On Foster Grade, east of Julian. Comment
  RSA86968  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1928-4-20 7845 San Diego San Felipe creek, 2 miles west of Sentenac Canyon, eastern San Diego County Comment
  RSA86986  Senna covesii F. W. Peirson 1928-4-21 7870 San Diego Canyon of San Felipe Creek, near foot of Sentenac canyon Comment
  RSA86987  Senna armata F. W. Peirson 1928-3-24 7752 San Diego San Felipe Canyon [Banner Canyon], shortly above the Narrows Comment
  RSA86992  Cercis occidentalis F. W. Peirson 1924-6-26 4868 San Diego At foot of steep portion of trail from Vallecito Canyon to Laguna Mts. Comment
  RSA87013  Thermopsis californica var. semota F. W. Peirson 1924-6-27 4854 San Diego Laguna Lake region, about 0.5 miles above Auto Camp 1677 Comment
  RSA87014  Thermopsis californica var. semota F. W. Peirson 1925-5-18 5979 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains. 1402 Comment
  RSA87037  Lupinus succulentus F. W. Peirson 1923-3-27 3401 San Diego Otay Creek. 76 Comment
  RSA87064  Hordeum marinum subsp. gussoneanum F. W. Peirson 1925-5-18 5992 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains 1402 Comment
  RSA87066  Koeleria macrantha F. W. Peirson 1920-6-24 2178 San Diego East trail up to Palomar Mountain 1707 Comment
  RSA87067  Koeleria macrantha F. W. Peirson 1924-6-25 4850 San Diego Laguna Lakes 1829 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
  RSA87088  Lupinus concinnus subsp. concinnus F. W. Peirson 1923-3-27 3403 San Diego Summit of low hill about 6 miles north of San Diego on the inland route to Riverside. 122 Comment
  RSA87089  Lupinus agardhianus F. W. Peirson 1923-3-27 3400 San Diego Otay Creek. 2 miles below dam and at about 250 ft. 76 Comment
  RSA87102  Lupinus bicolor subsp. microphyllus F. W. Peirson 1924-6-5 7 /41 San Diego Meadows at head of Doane Valley, Palomar Mts. 1524 Comment
  RSA87144  Quercus wislizeni var. frutescens F. W. Peirson 1924-6-26 4867 San Diego At foot of steep portion of trail from Vallecito Canyon to Laguna Mts. Comment
  RSA87158  Quercus dumosa F. W. Peirson 1923-9-10 4045 San Diego Soledad Canyon, 3 miles back from coast at Torrey Pines near Del Mar Comment
  RSA87164  Quercus cornelius-mulleri F. W. Peirson 1924-6-26 4866 San Diego At foot of steep portion of trail from Vallecito Canyon to Laguna Mts. 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
  RSA87345  Lupinus concinnus subsp. optatus F. W. Peirson 1929-5-4 8355 San Diego On trail from Oak Grove to Palomar Mtn. 1067 Comment
  RSA87350  Galium andrewsii F. W. Peirson 1920-6-24 4499 San Diego On east trail to Palomar Mtn. 1524 Comment
  RSA87458  Melica imperfecta F. W. Peirson 1929-5-4 8351 San Diego Trail from Oak Grove to Palomar Mountain. 1296 Comment
  RSA88800  Carex subfusca F. W. Peirson 1925-5-15 5918 San Diego Laguna Lakes, Laguna Mountains. Comment
  RSA88850  Carex subfusca F. W. Peirson 1925-5-18 5975 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains 1402 Comment
  RSA91335  Rupertia rigida F. W. Peirson 1924-6-25 4855 San Diego Laguna Mountains: Meadow near Laguna Lakes. 1524 Comment
Read comments Oct 10 2014
  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
  SD136473  Sanicula tuberosa F. W. Peirson 1925-5-18 5964 San Diego Cuyamaca Lake, Cuyamaca Mountains 1399 Comment
  SD45455  Acmispon nevadensis var. nevadensis F. W. Peirson 1924-6-23 4808 San Diego North slope French Valley, Palomar. 1640 Comment
  SD87541  Leptosiphon parviflorus F. W. Peirson 1923-3-27 3390 San Diego Imperial Beach, low slope about saline flat Comment
  SD87560  Linanthus orcuttii Frank W. Peirson 1920-6-24 2173 San Diego Ridge westward from Palomar Peak (IPB 2/06) 1431 Comment
  SD87561  Allium haematochiton Frank W. Peirson 1922-4-14 2914 San Diego Torrey Pines. Comment
  SD87580  Horsfordia newberryi Frank W. Peirson 1928-4-22 7874 San Diego San Felipe Creek, 4 miles below Sentenac Canyon, in very rocky small side canyon Comment
  SD87587 Image available Navarretia capillaris F. W. Peirson 1924-6-22 4772 San Diego Palomar, near head of Doane Valley 1584 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
  SD87636  Pseudognaphalium biolettii Frank W. Peirson 1927-4-19 7257 San Diego Headland south of Torrey Pines Comment
  SD87645  Iva hayesiana F. W. Peirson 1923-9-10 San Diego 3 miles back of Torrey Pines, along creek Comment
  SD87648  Pholistoma membranaceum Frank W. Peirson 1928-4-20 7844 San Diego San Felipe Creek 2 miles west of Sentenac Canyon Comment
  SD87662  Potentilla gracilis var. fastigiata F. W. Peirson 1924-6-22 4805 San Diego Doane Valley, Palomar Mts. (IPB 8/06) 1490 Comment
  SD87676  Cyperus laevigatus Frank W. Peirson 1924-12-30 5405 San Diego 1000 Palms CaA'on [a.k.a. Salvador Canyon], in wet places along stream. 121 Comment
Read comments Jul 11 2016
  SD87681  Vicia ludoviciana F. W. Peirson 1923-3-27 3395 San Diego Imperial Beach, saline flat back of sand dunes Comment
  SD87699  Erigeron divergens F. W. Peirson 1923-3-27 3365 San Diego Otay Creek; 2 miles below Otay Dam Comment
  SD87700  Galium andrewsii subsp. andrewsii F. W. Peirson 1920-6-24 San Diego Palomar, East Trail (IPB 9/06) 1520 Comment
  SD87709  Ambrosia salsola var. salsola Frank W. Peirson 1927-4-17 7232 San Diego Summit of Mountain Springs Grade Comment
  SD87715  Collinsia concolor F. W. Peirson 1920-7-25 2191 San Diego Palomar Mtns, meadow at east foot of Morgan Hill. (IPB 10/06) 1435 Comment
  SD87719  Bahiopsis laciniata F. W. Peirson 1923-3-26 3364 San Diego 4 miles south of San Onofre Comment
  SD87730  Adenophyllum porophylloides Frank W. Peirson 1928-4-20 7855 San Diego San Felipe Creek; foot of Sentenac Canyon. Comment
  SD87738  Osmadenia tenella F. W. Peirson 1924-6-21 4771 San Diego Nate Harrison Canyon Grade, Palomar Mountain 990 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
  SD87764  Castilleja densiflora subsp. gracilis Frank W. Peirson 1923-3-27 3372 San Diego Otay Creek, field on roadside 29 Comment
  SD87765  Erythranthe palmeri Frank W. Peirson 1920-6-24 San Diego Meadow at east foot of Morgan Hill, Palomar 1431 Comment
  SD87789  Antirrhinum nuttallianum subsp. nuttallianum Frank W. Peirson 1923-3-26 3415 San Diego Agua Hedionda, abundant in low bushes in saline flat back of beach Comment
  SD87810  Epilobium paniculatum Frankl W. Peirson 1932-9-5 10473 San Diego Cuyamaca Lake; at auto camp. 1431 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
  SEINET3385926 Image available Eriogonum fasciculatum var. foliolosum Frank W. Peirson 1926-4-30 6695 San Diego 1 mile from Pala on road to Henshaw Dam Comment
  UC1076255  Moehringia macrophylla Frank W. Peirson 1925-5-19 6000 San Diego Middle Peak , Middle Peak (Cuyamaca Mts.) 1615 Comment
  UC1100570  Carex subfusca Frank W. Peirson 1925-5-15 5918 San Diego Laguna Lakes Camp Laguna Mountains 1752 Comment
  UC501426  Castilleja densiflora subsp. gracilis Frank W. Peirson 1925-5-18 5967 San Diego n shore Cuyamaca Lake 1402 Comment
  UC501451  Porophyllum gracile Frank W. Peirson 1928-3-24 7739 San Diego near foot of the Sentenac Canyon; San Felipe Creek 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
  UC501476  Adenostoma sparsifolium Frank W. Peirson 1932-9-4 10471 San Diego Campo to Buckman 670 Comment
  UC501496  Artemisia ludoviciana subsp. albula Frank W. Peirson 1932-9-5 10474 San Diego grade e of San Ysabel 1066 Comment
  UC501503  Arctostaphylos glandulosa subsp. glandulosa Frank W. Peirson 1927-4-18 7233 San Diego about halfway from Newtown to Buckman Spring (along boulevard) Comment
  UC501526  Githopsis diffusa subsp. candida Frank W. Peirson 1925-5-19 6003 San Diego 1 mi s Morettis 944 Comment
  UC501545  Nemophila menziesii Frank W. Peirson 1929-3-31 8286 San Diego e Julian (Foster Grade, just below Banner); Foster Grade, e of Julian, just below Banner Comment
  UC501579  Lotus hamatus Frank W. Peirson 1926-4-30 6696 San Diego about 1 mi from Pala (on the road to Henshaw Dam) 167 Comment
  UC501594  Limnanthes gracilis subsp. parishii Frank W. Peirson 1925-5-18 5984 San Diego in Auto Campground, west end of Cuyamaca Lake 1402 Comment
Read comments May 13 2016
  UC501617  Brodiaea terrestris subsp. kernensis Frank W. Peirson 1924-6-23 4811 San Diego meadows at head Doane Valley; Palomar Mt. 1524 Comment
  UC501628  Ericameria linearifolia Frank W. Peirson 1929-3-31 8287 San Diego e of Julian; Foster Grade 914 Comment
  UC511783  Phacelia davidsonii Frank W. Peirson 1925-5-15 5915 San Diego Laguna Lakes Auto Camp Laguna Mts. 1676 Comment
  UC511924  Phacelia Frank W. Peirson 1928-4-20 7929 San Diego San Felipe Creek Sentenac Canyon (at foot of canyon) Comment
  UC566731  Porophyllum gracile Frank W. Peirson 1927-4-17 7221 San Diego summit of, n of boulevard Mountain Springs Grade Comment
  UC581529  Viola lobata subsp. lobata Frank W. Peirson 1925-5-19 5996 San Diego Middle Peak; Cuyamaca Mountains, Middle Peak 1676 Comment
  UC581530  Viola lobata subsp. integrifolia Frank W. Peirson 1925-5-19 5996 a San Diego Middle Peak; Cuyamaca Mountains, Middle Peak 1676 Comment
  UC634618  Ceanothus leucodermis Frank W. Peirson 1925-5-17 5950 San Diego Vallecito Canyon east slope Laguna Mts. Comment
  UC634854  Ceanothus verrucosus Frank W. Peirson 1922-4-14 734 San Diego Torrey Pines Comment
  UC634887  Dichondra occidentalis Frank W. Peirson 1927-4-19 7250 San Diego headland s Torrey Pines Comment
  UC635227  Brodiaea terrestris subsp. kernensis Frank W. Peirson 1924-6-25 4834 San Diego near Little Lake; Laguna Mts. 1828 Comment
  UC635298  Astragalus trichopodus var. lonchus Frank W. Peirson 1927-4-19 7253 San Diego headland s Torrey Pines; s of Torrey Pines Comment
  UC635464  Lewisia brachycalyx Frank W. Peirson 1925-5-18 5990 San Diego in field near w end of Cuyamaca Lake Cuyamaca Lake 1402 Comment
  UC635537  Clematis pauciflora Frank W. Peirson 1927-4-17 7225 San Diego summit Mountain Springs Grade (on escarpment s. of rd.) Comment
  UC635590  Nemacladus ramosissimus Frank W. Peirson 1925-5-15 5899 San Diego 4 mi s Buckman Springs Comment
  UC635630  Limnanthes gracilis subsp. parishii Frank W. Peirson 1925-5-15 5921 San Diego Laguna Lakes Camp Laguna Mts. Comment
  UC640213  Ericameria paniculata Frank W. Peirson 1938-11-12 12638 San Diego just above The Narrows; San Felipe Canyon Comment
  UC643227  Boerhavia triquetra Mabel B. Peirson 1939-11-25 12900 San Diego s. side San Felipe Canyon (immediately w. of the Narrows) Comment
  UC672240  Pentachaeta aurea Frank W. Peirson 1925-5-15 5913 San Diego Laguna Lakes Camp Laguna Mts. 1828 Comment
  UC672541  Mimulus palmeri Frank W. Peirson 1925-5-15 5919 San Diego Laguna Lakes Camp Laguna Mts. Comment
  UC672588  Collinsia parviflora Frank W. Peirson 1925-5-15 5927 San Diego Laguna Mountains, Laguna Lakes Camp Laguna Lakes Camp; Laguna Mountains, Laguna Lakes Camp 1752 Comment
  UC673514  Zigadenus venenosus var. venenosus Frank W. Peirson 1925-5-18 5989 San Diego along n shore Cuyamaca Lake 1402 Comment
  UC698499  Eleocharis parishii F. W. Peirson 1925-5-19 6016 San Diego 4 mi NW of Warners Hot Springs (Aqua Caliente) (road crossing over San Luis Rey River) 914 Comment
  UC908038  Linanthus orcuttii Frank W. Peirson 1920-6-24 2173 San Diego e foot Morgon Hill; Palomar 1432 Comment
  UC908464  Phlox gracilis Frank W. Peirson 1925-5-15 5912 San Diego Laguna Lakes Camp Laguna Mts. 1828 Comment
  UC908600  Linanthus Frank W. Peirson 1925-5-15 5924 San Diego Laguna Lakes Camp Laguna Mts. 1828 Comment
  UC908853  Gilia stellata Frank W. Peirson 1928-4-21 7866 San Diego in wash near junction Grapevine C. (San Felipe Canyon); , junction of Grapevine C. Comment
  UC908863  Gilia stellata Frank W. Peirson 1928-3-24 7750 San Diego about 2 mi below Sentenac Canyon (San Felipe Canyon); , below Sentenac Canyon Comment
  UC908917  Allophyllum gilioides subsp. gilioides Frank W. Peirson 1925-5-15 5917 San Diego near Laguna Lakes Auto Camp; Laguna Mts. 1752 Comment
  UC912302  Micropus californicus Frank W. Peirson 1925-5-18 5981 San Diego roadside near Automobile Camp (Cuyamaca Laek); Cuyamaca Lake 1402 Comment
  UCD45611  Quercus cornelius-mulleri F. W. Peirson 1924-6-26 4866 San Diego Vallecito Canon, Laguna Mts. San Diego Co. Comment
  UCR129699  Triglochin maritima F. W. Peirson 1923-3-27 3391 San Diego South Coast, Imperial Beach 1 Comment
  UCR129700  Zigadenus venenosus F. W. Peirson 1923-3-26 4102 San Diego South Coast, southward from Torrey Pines 152 Comment
  UCR136621  Antirrhinum nuttallianum subsp. nuttallianum F. W. Peirson 1924-6-21 4764 San Diego Peninsular Range, grade north of Pala 229 Comment
  UCR136630  Sidalcea malviflora F. W. Peirson 1927-4-19 7237 San Diego South Coast, headland south of Torrey Pines 91 Comment
  UCR136636  Collinsia concolor F. W. Peirson 1929-5-4 8348 San Diego Mt. Palomar, lower part of Oak Grove trail 915 Comment
  UCR136641  Castilleja applegatei F. W. Peirson 1920-6-24 2174 San Diego Palomar Mountains, east foot of Morgan Hill 1585 Comment
  UCR136644  Rhamnus californica subsp. tomentella F. W. Peirson 1924-6-22 4796 San Diego Peninsular Ranges; Palomar Mountains, Mt. Palomar, near country club, at the top of grade 1616 Comment
  UCR142886  Navarretia hamata subsp. hamata F. W. Peirson 1924-6-21 4770 San Diego Peninsular Range, benches SE of Pala [along Hwy 76 above the San Luis Rey River] 244 Comment
  UCR143146  Eriastrum sapphirinum F. W. Peirson 1924-6-21 4768 San Diego Peninsular Range, benches SE of Pala [along Hwy 76 above the San Luis Rey River] 244 Comment
  UCR168495  Holcus lanatus F. W. Peirson 1924-6-22 4800 San Diego Peninsular Ranges; Palomar Mountains, Mt. Palomar, near country club, at the top of grade 1616 Comment
  UCR20355  Porophyllum gracile F. W. Peirson 1928-3-24 7739 San Diego Peninsular Range/ Sonoran (Colorado) Desert, San Filipe Creek near foot of Sentenac Canyon 610 Comment
  UCR70851  Navarretia atractyloides F. W. Peirson 1924-6-21 4769 San Diego Peninsular Range, benches SE of Pala [along Hwy 76 above the San Luis Rey River] 244 Comment
  CAS-BOT-BC427047  Lithophragma affine Frank W. Peirson 1926-5-1 6704 San Diego Palomar, east trail from Oak Grove 1524 Comment
  CAS-BOT-BC514508  Eriastrum eremicum subsp. eremicum Frank W. Peirson 1928-4-22 7873 San Diego San Felipe Creek, 4 mi below the Sentenac Comment
  CAS-BOT-BC515148  Eriastrum sapphirinum subsp. sapphirinum F. W. Peirson 1920-6-23 2299 San Diego Oak Grove 1158 Comment
  CAS-BOT-BC515149  Eriastrum sapphirinum subsp. sapphirinum F. W. Peirson 1920-6-23 2299 San Diego Oak Grove 1158 Comment
  PASA1252  Gastridium lendigerum Frank W. Peirson 1923-9-7 San Diego ""Holy Jim"" trail to Santiago Peak Comment
Read comments Jun 24 2016
  POM43354  Potentilla norvegica subsp. monspeliensis F. W. Peirson 1924-6-24 4829 San Diego Margin of Cuyamaca Lake. 1402 Comment
  POM90400  Lotus unifoliolatus F. W. Peirson 1920-6-25 2198 San Diego San Luis Rey River. 915 Comment
  POM9687  Vicia americana F. W. Peirson 1920-6-24 2175 San Diego On east trail to Palomar Mtn. 1677 Comment
  POM9914  Cheilanthes clevelandii F. W. Peirson 1920-6-24 2181 San Diego On east trail to Palomar Mtn. 1524 Comment
  POM9920  Petunia parviflora F. W. Peirson 1920-6-25 2207 San Diego San Luis Rey. 915 Comment
  RSA0012662  Senecio californicus F. W. Peirson 1923-3-26 3381 San Diego Near Encinitas. Comment
  RSA0012966  Helianthus californicus F. W. Peirson 1932-9-4 10462 San Diego 7 miles west of Campo. 671 Comment
  RSA0013308  Senecio californicus F. W. Peirson 1923-3-27 s.n. San Diego Low slope about saline flat, 1/4 mile from beach; Imperial Beach. Comment
  RSA0017267  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. 915 Comment
  RSA0017268  Gilia ochroleuca subsp. exilis F. W. Peirson 1929-5-4 8342 San Diego About 5 miles N of Oak Grove. 762 Comment
  RSA0019608  Ranunculus californicus var. austromontanus F. W. Peirson 1924-6-22 4794 San Diego Palomar, near country club. 1585 Comment
  RSA0020653  Bahiopsis laciniata F. W. Peirson 1923-3-26 3364 San Diego 4 miles south of San Onofre Comment
  RSA0028102  Mirabilis multiflora var. pubescens F. W. Peirson 1920-6-22 1851 San Diego Oak Grove, Palomar Region 854 Comment
  RSA0029735  Delphinium hesperium subsp. cuyamacae F. W. Peirson 1924-6-23 4809 San Diego Palomar. French Valley 1524 Comment
  RSA0029736  Delphinium hesperium subsp. cuyamacae F. W. Peirson 1924-6-23 4809 San Diego Palomar. French Valley 1524 Comment
  RSA0029903  Delphinium parishii subsp. subglobosum F. W. Peirson 1928-3-24 7740 San Diego San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA0031392  Boechera retrofracta F. W. Peirson 1925-5-15 5922 San Diego Laguna Lakes, Laguna Mts 1524 Comment
  RSA0034419  Potentilla norvegica subsp. monspeliensis F. W. Peirson 1925-5-18 4829 San Diego Margins of Cuyamaca Lake. 1402 Comment
  RSA0034571  Monardella nana subsp. nana F. W. Peirson 1924-6-25 4848 San Diego Laguna Mountains, Laguna Lakes region. Comment
  RSA0039812  Thysanocarpus laciniatus F. W. Peirson 1925-5-17 5942 San Diego Lower part of Vallecito Canyon. Comment
  RSA0041598  Thysanocarpus curvipes F. W. Peirson 1930-5-11 8783 San Diego Henshaw Dam. 854 Comment
  RSA0059111  Xylorhiza orcuttii Frank W. Peirson 1927-4-14 7191 San Diego Canyon near east end of Santa Rosa Mts. 8 miles from Imperial Valley Boulevard. Near Imperial and San Diego Cos' line. Comment
  RSA0059174  Orobanche californica subsp. feudgei Frank W. Peirson 1920-6-24 2746 San Diego East trail to Palomar Mt. 1676 Comment
  RSA0070478  Orobanche californica subsp. feudgei Frank W. Peirson 1926-5-1 6722 San Diego Bottom lands of Temecula River, Oak Grove. Comment
  RSA0074140  Alopecurus aequalis F. W. Peirson 1924-6-25 4840 San Diego Margin of Little Lake, Laguna Mts. Comment
  RSA0075945  Heterotheca sessiliflora F. W. Peirson 1923-3-27 3368 San Diego Along back side of low sand dunes, Imperial Beach. Comment
  RSA0076255  Heuchera brevistaminea F. W. Peirson 1925-5-16 5940 San Diego Close to summit of Monument Peak, Laguna Mountains. 1829 Comment
  RSA0086627  Viola purpurea F. W. Peirson 1926-5-1 67067 San Diego Along trail from Oak Grove to Palomar Mt. 1524 Comment
  RSA0091070  Amsinckia spectabilis F. W. Peirson 1923-3-27 3374 San Diego Imperial Beach. Comment
  RSA0095116  Saltugilia australis F. W. Peirson 1926-5-1 6708 San Diego Along trail from Oak Grove to Palomar Mt. 1524 Comment
  RSA0098701  Spergularia villosa F. W. Peirson 1922-4-14 2853 San Diego Roadside near La Jolla. Comment
  RSA0098703  Spergularia villosa F. W. Peirson 1922-4-14 4290 San Diego Grossmont. Comment
  RSA0098762  Spergularia macrotheca F. W. Peirson 1922-4-19 2909 San Diego Torrey Pines. Comment
  RSA0105812  Eriastrum densifolium subsp. austromontanum F. W. Peirson 1924-6-24 4810 San Diego S. slope Palomar [Mountain], near summit. 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
  RSA0117319  Collinsia parviflora F. W. Peirson 1925-5-15 5927 San Diego Laguna Lakes, Laguna Mts 1524 Comment
  RSA0117463  Collinsia concolor F. W. Peirson 1920-6-24 2191 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA0117464  Collinsia concolor F. W. Peirson 1929-5-4 8340 San Diego Along lower part of trail from Oak Grove to Palomar Mt. 914 Comment
  RSA0117474  Collinsia concolor F. W. Peirson 1925-5-12 5818 San Diego Potrero Grade 686 Comment
  RSA0121504  Carex hassei F. W. Peirson 1924-6-22 4781 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA0121761  Vitis girdiana F. W. Peirson 1925-5-17 5944 San Diego In lower Vallecito Canyon, east base of Laguna Mts. Comment
  RSA0122047  Eriastrum sapphirinum subsp. dasyanthum F. W. Peirson 1915-7-1 4473 San Diego Pala, San Diego County, California. Comment
  RSA0122049  Eriastrum sapphirinum subsp. dasyanthum F. W. Peirson 1924-6-21 4768 San Diego Benches southeast of Pala 244 Comment
  RSA0124136  Eriastrum sapphirinum subsp. sapphirinum F. W. Peirson 1920-6-23 2299 San Diego Oak Grove. 854 Comment
  RSA0125607  Echinocereus engelmannii var. engelmannii F. W. Peirson 1928-4-20 7843 San Diego Near summit of low hill on San Felipe Creek, about 2 miles above Sentenac Canyon. Comment
  RSA0126421  Nemacladus longiflorus var. longiflorus F. W. Peirson 1926-5-1 6719 San Diego Bottom lands of temecula River, Oak grove. 854 Comment
  RSA0126446  Nemacladus longiflorus var. longiflorus F. W. Peirson 1925-5-15 5900 San Diego 4 miles south of Buckman Springs. 1220 Comment
  RSA128758  Arctostaphylos glandulosa subsp. adamsii F. W. Peirson 1927-4-18 7233 San Diego About 1/2 way from Newtown to Buckman Sps. Comment
  RSA65664  Claytonia parviflora F. W. Peirson 1920-6-24 2816 San Diego East foot of Morgan Hill, Palomar Mts. 1433 Comment
Read comments Sep 7 2010
  RSA70412  Arctostaphylos pungens F. W. Peirson 1922-4-13 2896 San Diego El Centro-San Diego road west of main summit. 1143 Comment
Read comments Sep 2 2016
  RSA90046  Lotus argophyllus var. argophyllus F. W. Peirson 1925-5-18 5977 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains. 1402 Comment
  RSA90066  Lotus nevadensis var. davidsonii F. W. Peirson 1924-6-22 4792 San Diego Near the Country Club, Palomar Mountains. 1585 Comment
  RSA90078  Lotus argophyllus var. argophyllus F. W. Peirson 1928-4-21 7867 San Diego Junction of Grapevine Canyon and San Felipe Creek, eastern San Diego County. Comment
  RSA90154  Astragalus didymocarpus F. W. Peirson 1927-4-19 7238 San Diego Headland south of Torrey Pines, Comment
  RSA90162  Astragalus didymocarpus var. dispermus F. W. Peirson 1922-4-13 2876 San Diego Mountain Springs Grade on Hwy between San Diego and El Centro. 1067 Comment
  RSA90199  Alopecurus aequalis F. W. Peirson 1924-6-25 4840 San Diego border of Little Lake. Comment
  RSA90224  Astragalus douglasii var. parishii F. W. Peirson 1925-5-20 6007 San Diego 1 miles S of Oak Grove. Comment
  RSA90227  Astragalus douglasii var. perstrictus F. W. Peirson 1925-5-15 5896 San Diego 10 miles northwest of Jacumba Comment
  RSA90229  Astragalus douglasii F. W. Peirson 1924-6-22 4799 San Diego Near the Country Club, Mt. Palomar. 1585 Comment
  RSA90231  Astragalus douglasii var. parishii F. W. Peirson 1920-6-24 590 San Diego Trail from Oak Grove to Palomar Mountain 1677 Comment
  RSA90261  Lathyrus vestitus subsp. alefeldii F. W. Peirson 1924-6-27 4882 San Diego Monument Peak, Laguna Mts. Comment
  RSA90284  Lathyrus vestitus subsp. alefeldii F. W. Peirson 1920-6-24 2012 San Diego Trail from Oak Grove to Palomar Mountain 1677 Comment
  RSA90298  Lotus hamatus F. W. Peirson 1927-4-19 7259 San Diego Headland South of Torrey Pines Comment
  RSA90300  Lotus hamatus F. W. Peirson 1926-4-30 6696 San Diego About 1 mile from Pala on the road to Henshaw Dam Comment
  RSA90332  Lotus nevadensis var. davidsonii F. W. Peirson 1924-6-23 4808 San Diego Doane Valley, Palomar Mts. 1524 Comment
  RSA90333  Lotus rigidus F. W. Peirson 1928-3-24 7733 San Diego San Felipe Creek, Sentenac Canyon, eastern San Diego Co. Comment
  RSA90344  Lotus wrangelianus F. W. Peirson 1930-5-11 8784 San Diego near Henshaw Dam. 854 Comment
  RSA90346  Lathyrus splendens F. W. Peirson 1925-5-12 5817 San Diego Potrero Grade 686 Comment
  RSA90357  Lotus nevadensis F. W. Peirson 1924-6-25 4843 San Diego Public camp, Laguna Lakes region, Laguna Mountains. Comment
  RSA90368  Lotus heermannii var. heermannii F. W. Peirson 1920-6-24 4088 San Diego East foot of Morgan Hill, Palomar Mts. 1433 Comment
  RSA90381  Lotus strigosus F. W. Peirson 1929-5-4 8352 San Diego On trail from Oak Grove to Palomar Mtn. 1067 Comment
  RSA90394  Lotus nevadensis F. W. Peirson 1932-9-4 10467 San Diego 4 miles west of Campo 671 Comment
  RSA90425  Lotus micranthus F. W. Peirson 1925-5-18 5963 San Diego North shore of Cyamaca Lake 1402 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
  RSA90641  Astragalus palmeri F. W. Peirson 1928-4-20 7850 San Diego Upper end of Sentenac Canyon, San Felipe Creek. Comment
  RSA90696  Gutierrezia sarothrae F. W. Peirson 1932-9-4 10458 San Diego 3 miles east of Chula Vista. 76 Comment
  RSA90707  Astragalus trichopodus var. lonchus F. W. Peirson 1927-4-19 7253 San Diego Headland South of Torrey Pines Comment
  RSA90710  Astragalus trichopodus var. lonchus F. W. Peirson 1923-3-27 3396 San Diego Imperial Beach. Comment
  RSA90775  Astragalus palmeri F. W. Peirson 1922-4-13 2899 San Diego East summit at head of Mountain Springs Grade, Eastern San Diego. 1067 Comment
  RSA90854  Carex triquetra F. W. Peirson 1923-3-26 4266 San Diego 0.5 mile north of Encinitas. San Diego County. Comment
  RSA90855  Carex triquetra F. W. Peirson 1926-4-30 6698 San Diego Bushy slope about 2 miles east of Pala. Comment
  RSA90918  Ericameria brachylepis F. W. Peirson 1932-9-4 10469 San Diego Campo to Bukman Spring 671 Comment
  RSA90957  Erigeron divergens F. W. Peirson 1924-6-25 4845 San Diego Above camp [Laguna Camp?], Laguna Lakes Region, Laguna Mountains. Comment
  RSA90989  Trifolium wormskioldii F. W. Peirson 1925-5-19 6004 San Diego San Luis Ray River. 915 Comment
  RSA90990  Trifolium wormskioldii F. W. Peirson 1925-5-18 5973 San Diego North shore of Cuyamaca Lake. 1402 Comment
  RSA91019  Hoita macrostachya F. W. Peirson 1924-6-26 4878 San Diego Lower part of Vallecito Canyon, eastern San Diego Co. Comment
  RSA91059  Trifolium depauperatum var. truncatum F. W. Peirson 1925-5-18 5972 San Diego North shore of Cuyamaca Lake. 1402 Comment
  RSA91087  Trifolium depauperatum var. truncatum F. W. Peirson 1927-4-19 7252 San Diego Sink on headland south of Torrey Pines Comment
  RSA91097  Trifolium variegatum F. W. Peirson 1920-6-24 4421 San Diego Meadow east of Morgan Hill; Palomar Mts. 1433 Comment
  RSA91129  Trifolium microcephalum F. W. Peirson 1925-3-18 5970 San Diego North shore of Cuyamaca Lake, eastern San Diego County 1402 Comment
  RSA91202  Lupinus excubitus var. hallii F. W. Peirson 1924-6-22 4789 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA91219  Krameria erecta F. W. Peirson 1927-4-14 7185 San Diego Near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Boulevard. 305 Comment
  RSA91245  Vicia americana F. W. Peirson 1925-5-15 5910 San Diego Laguna Lakes, Laguna Mts., slightly North of public camp Comment
  RSA91246  Vicia exigua F. W. Peirson 1923-3-27 3395 San Diego Imperial Beach. Comment
  RSA91249  Vicia americana F. W. Peirson 1920-6-24 2175 a San Diego Trail from Oak Grove to Palomar Mountain 1677 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
  RSA91334  Rupertia rigida F. W. Peirson 1920-6-25 2187 San Diego Top of grade south of Oak Grove 976 Comment
  RSA91379  Linum lewisii F. W. Peirson 1925-5-19 5995 San Diego Middle Peak near South Peak, cuyamaca Mts Comment
  RSA91407  Trifolium albopurpureum F. W. Peirson 1925-5-16 5932 San Diego 2 mile north of Public Camp at Laguna Lakes 1524 Comment
Read comments Jan 11 2016
  RSA91412  Trifolium albopurpureum F. W. Peirson 1925-5-18 5974 San Diego North shore of Cyamaca Lake 1402 Comment
  RSA91427  Marina parryi F. W. Peirson 1928-7-24 7744 San Diego San Felipe Creek about 2 miles below Sentenac Canyon, eastern San Diego County Comment
  RSA91436  Psorothamnus schottii F. W. Peirson 1928-4-20 7861 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA91484  Isolepis cernua F. W. Peirson 1924-6-26 4871 San Diego Lower part of Vallecito Canyon Comment
  RSA91521  Poa secunda F. W. Peirson 1925-5-16 5933 San Diego About 1 mile north of Laguna Lakes camp, Laguna Mouintains. Comment
  RSA91540  Medicago lupulina F. W. Peirson 1925-5-18 5987 San Diego North shore of Cyamaca Lake 1402 Comment
  RSA91554  Trifolium willdenovii F. W. Peirson 1925-5-18 5971 San Diego Cuyamaca Lake, eastern San Diego Co. 1402 Comment
  RSA91600  Carex multicaulis F. W. Peirson 1925-5-19 5999 San Diego Middle Peak, Cuyamaca Mountains, eastern San Diego County 1677 Comment
  RSA91696  Gnaphalium palustre F. W. Peirson 1920-6-25 2493 San Diego from Oak Grove to Warners Hot Springs. 915 Comment
  RSA91698  Gnaphalium palustre F. W. Peirson 1924-6-22 4778 San Diego Near the Country Club, Palomar Mountains. 1585 Comment
  RSA91728  Achnatherum coronatum F. W. Peirson 1929-5-4 8350 San Diego trail from Oak Grove to Palomar Mt. Comment
  RSA91751  Pseudognaphalium biolettii F. W. Peirson 1927-4-19 7257 San Diego Headland south of Torrey Pines, Comment
  RSA91780  Ericameria linearifolia F. W. Peirson 1925-5-17 5959 San Diego Lower Vallecito Canyon, east base of Laguna Mountains. Comment
  RSA91785  Ericameria linearifolia F. W. Peirson 1929-3-31 8287 San Diego Lower part of Foster Grade E of Julian. 915 Comment
  RSA91907  Phalaris caroliniana F. W. Peirson 1927-4-19 7246 San Diego Headland South of Torrey Pines Comment
  RSA91984  Holcus lanatus F. W. Peirson 1924-6-22 4800 San Diego West of Country Club, Palomar Mts. 1616 Comment
  RSA92075  Micropus californicus F. W. Peirson 1930-5-11 8779 San Diego near Henshaw Dam. 854 Comment
  RSA92092  Eleocharis montevidensis var. montevidensis F. W. Peirson 1925-5-19 6005 San Diego Road crossing a few miles north of Warners Hots Spring, San Luis Rey River 915 Comment
  RSA92104  Cyperus squarrosus F. W. Peirson 1920-6-22 2684 San Diego East foot of Morgan Hill, Palomar Mountains 1433 Comment
  RSA92129  Eleocharis palustris F. W. Peirson 1925-5-19 6006 San Diego About 4 miles northwest of Warners Hots Spring on the San Luis Rey River 915 Comment
  RSA92131  Eleocharis palustris F. W. Peirson 1923-3-28 5375 San Diego Mesa about 6 miles North of San Diego. 122 Comment
  RSA92152  Eleocharis parishii F. W. Peirson 1925-5-19 6016 San Diego Road crossing on San Luis Rey River, northern San Diego County 915 Comment
  RSA92193  Amblyopappus pusillus F. W. Peirson 1923-3-27 3405 San Diego Imperial Beach. Comment
  RSA92225  Porophyllum gracile F. W. Peirson 1928-3-24 7739 San Diego San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA92226  Calycadenia tenella F. W. Peirson 1924-6-21 4771 San Diego N* Canyon Grade, Palomar Mts. 991 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
  RSA92261  Porophyllum gracile F. W. Peirson 1928-4-22 7878 San Diego The Narrows, San Felipe Creek, eastern San Diego County. Comment
  RSA92329  Poa secunda F. W. Peirson 1925-5-18 5991 San Diego North shore of Cuyamaca Lake, Cuyamaca Mountains 1402 Comment
  RSA92372  Eriophyllum wallacei F. W. Peirson 1925-5-17 5951 San Diego Lower part of Vallecito Canyon. Comment
  RSA92382  Psilocarphus brevissimus F. W. Peirson 1924-6-25 4835 San Diego near old Rangers Cabin, Laguna Lakes region, Laguna Mtns. Comment
  RSA92383  Psilocarphus brevissimus F. W. Peirson 1923-3-28 5279 San Diego About 6 miles north of San Diego Comment
  RSA92477  Coreopsis maritima F. W. Peirson 1927-4-19 7234 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA92478  Coreopsis maritima F. W. Peirson 1922-4-14 2916 San Diego Torrey Pines. Comment
  RSA92499  Stylocline gnaphaloides F. W. Peirson 1927-4-19 7244 San Diego Headland south of Torrey Pines, Comment
  RSA92500  Stylocline gnaphaloides F. W. Peirson 1922-2-14 2855 San Diego Torrey Pines Comment
  RSA92524  Bahiopsis parishii F. W. Peirson 1925-5-17 5958 San Diego Lower Vallecito Canyon, east base of Laguna Mountains. Comment
  RSA92527  Bahiopsis parishii F. W. Peirson 1928-3-24 7737 San Diego San Felipe Creek near mouth of Sentenac Canyon, eastern San Diego. Comment
  RSA92532  Eriophyllum wallacei F. W. Peirson 1925-5-15 5904 San Diego 4 miles south of Buckman Springs. 1220 Comment
  RSA92538  Eriophyllum wallacei F. W. Peirson 1922-4-13 2883 San Diego Mountain Springs grade east of Jacumba; eastern San Diego 1067 Comment
  RSA92540  Eriophyllum wallacei F. W. Peirson 1925-5-16 5935 San Diego Along ridge 1 mile N of Public Camp Laguna Lakes, Laguna Mts 1677 Comment
  RSA92541  Eriophyllum wallacei F. W. Peirson 1928-3-24 7741 San Diego San Felipe Creek, near foot of Sentenac Canyon, eastern San Diego Co. Comment
  RSA92704  Salix laevigata F. W. Peirson 1925-5-18 5976 San Diego South shore of Cuyamaca Lake. 1402 Comment
  RSA92852  Chaenactis carphoclinia var. peirsonii F. W. Peirson 1927-4-14 7182 San Diego Silent Canyon' near east end of Santa Rosa Mountains, 8 miles from Imperial Valley Blvd 305 Comment
Read comments Jan 23 2012
  RSA92893  Lasthenia californica F. W. Peirson 1925-5-18 6018 San Diego North shore of Cyamaca Lake 1402 Comment
  RSA92911  Lasthenia gracilis F. W. Peirson 1925-5-18 5994 San Diego N shore of Cuyamaca Lake, Eastern San Diego County 1433 Comment
  RSA92912  Lasthenia gracilis F. W. Peirson 1922-4-13 2884 San Diego Mountain Springs grade east of Jacumba; eastern San Diego 1067 Comment
  RSA92989  Lasthenia coronaria F. W. Peirson 1927-4-19 7248 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA93034  Grindelia hirsutula var. hallii F. W. Peirson 1932-9-4 10472 San Diego Cuyamaca Lake 1433 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
  RSA93108  Erigeron divergens F. W. Peirson 1923-3-27 3365 San Diego Otay Creek. 76 Comment
  RSA93162  Baccharis sarothroides F. W. Peirson 1912-9-4 1296 San Diego Near National City Comment
  RSA93163  Baccharis sarothroides F. W. Peirson 1932-9-4 10459 San Diego 3 miles east of Chula Vista. 76 Comment
  RSA93217  Corethrogyne filaginifolia F. W. Peirson 1923-3-26 3382 San Diego 0.5 mile north of Encinitas. Comment
  RSA93247  Chrysothamnus paniculatus F. W. Peirson 1938-11-12 12638 San Diego San Felipe Canyon just above the Narrows, eastern San Diego County Comment
Read comments Jan 30 2009
  RSA93280  Pentachaeta aurea F. W. Peirson 1923-3-28 3392 San Diego 6 miles North of San Diego 122 Comment
  RSA93282  Pentachaeta aurea F. W. Peirson 1925-5-15 5913 San Diego Laguna Lakes, Laguna Mts 1524 Comment
  RSA93283  Pentachaeta aurea F. W. Peirson 1924-6-27 4863 San Diego Laguna Lake region, Laguna Mountains Comment
  RSA93288  Pentachaeta aurea F. W. Peirson 1927-4-19 7235 San Diego Headland south of Torrey Pines, Comment
  RSA93329  Downingia concolor var. brevior F. W. Peirson 1925-5-19 5982 San Diego Cuyamaca Lake 1402 Comment
Read comments Mar 21 2014
  RSA93331  Downingia cuspidata F. W. Peirson 1923-3-28 3394 San Diego Mesa about 6 miles North of San Diego. 122 Comment
  RSA93443  Brickellia frutescens F. W. Peirson 1928-4-22 7885 San Diego steep rocky canyon immediately west of the Narrows, San Felipe Creek. Comment
  RSA93444  Brickellia frutescens F. W. Peirson 1928-4-20 7848 San Diego San Felipe creek, 2 miles west of Sentenac Canyon, eastern San Diego County Comment
  RSA93687  Ambrosia confertiflora F. W. Peirson 1932-9-4 10460 San Diego 3 miles east of Chula Vista. 76 Comment
  RSA93716  Brickellia arguta var. odontolepis F. W. Peirson 1928-4-20 7851 San Diego canyon of San Felipe Creek, Sentenac Canyon, E San Diego Co. Comment
  RSA93734  Acamptopappus sphaerocephalus var. sphaerocephalus F. W. Peirson 1928-4-21 7871 San Diego Canyon of San Felipe Creek, near foot of Sentenac canyon Comment
  RSA93771  Geraea viscida F. W. Peirson 1925-5-15 5893 San Diego 3 miles northwest of Jacumba Comment
  RSA93776  Lobelia cardinalis subsp. graminea F. W. Peirson 1932-9-5 10476 San Diego Henshaw reservoir. 823 Comment
  RSA93804  Chaenactis glabriuscula var. glabriuscula F. W. Peirson 1924-6-25 4833 San Diego Laguna Lakes Region, Laguna Mountains. Comment
  RSA93809  Chaenactis fremontii F. W. Peirson 1928-4-20 7858 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA93896  Encelia actoni F. W. Peirson 1925-5-15 5887 San Diego Summit of Mtn Springs Grade, East of Jacumba Comment
  RSA93898  Encelia actoni F. W. Peirson 1925-5-20 6008 San Diego About 2 miles north of Oak Grove, San Diego. Comment
  RSA93911  Iva hayesiana F. W. Peirson 1923-9-10 4046 San Diego Soledad Canyon, 3 miles back from coast at Torrey Pines near Del Mar Comment
  RSA93920  Dicoria canescens F. W. Peirson 1939-11-25 12637 a San Diego San Felipe canyon just above the Narrows, eastern San Diego County. Comment
  RSA93925  Dicoria canescens F. W. Peirson 1938-11-12 12637 San Diego San Felipe Canyon just above the Narrows, eastern San Diego County Comment
  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
  RSA94122  Brickellia californica F. W. Peirson 1932-9-4 10463 San Diego 7 miles west of Campo. 671 Comment
  RSA94127  Hulsea vestita subsp. callicarpha F. W. Peirson 1924-6-22 4796 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA94143  Hulsea vestita subsp. callicarpha F. W. Peirson 1920-6-24 2202 San Diego On east trail to Palomar Mtn. 1524 Comment
  RSA94172  Layia platyglossa subsp. campestris F. W. Peirson 1925-5-15 5929 San Diego Laguna Lakes, Laguna Mountains. Comment
  RSA94183  Hemizonia floribunda F. W. Peirson 1932-9-4 10461 San Diego Potrero. 701 Comment
  RSA94386  Dyssodia porophylloides F. W. Peirson 1925-5-15 5889 San Diego summit of Mountain Springs Grade, eastern San Diego 1067 Comment
  RSA94388  Dyssodia porophylloides F. W. Peirson 1928-4-20 7855 San Diego South slope of canyon of San Felipe Creek, near foot of Sentenac Canyon. Comment
  RSA94412  Artemisia ludoviciana subsp. ludoviciana F. W. Peirson 1932-9-5 10474 San Diego Grade east of Santa Ysabel 1067 Comment
  RSA94561  Senecio californicus F. W. Peirson 1928-4-20 7857 San Diego San Felipe creek near foot of Sentenac Canyon , eastern San Diego Co. Comment
  RSA94563  Senecio californicus F. W. Peirson 1922-4-13 4248 San Diego Mountain Springs, southeastern San Diego County 793 Comment
  RSA94602  Anisocoma acaulis F. W. Peirson 1929-5-5 8364 San Diego South slope of divide between Oak Grove and Warner's Hot Springs. 915 Comment
  RSA94666  Senecio douglasii var. monoensis F. W. Peirson 1925-5-15 5894 San Diego 3 miles northwest of Jacumba, eastern San Diego County Comment
  RSA94713  Senecio flaccidus var. douglasii F. W. Peirson 1924-6-26 4875 San Diego Laguna Mountains. Lower part of Vallecito Canyon. Comment
  RSA94831  Trixis californica F. W. Peirson 1928-3-24 7745 San Diego San Felipe Creek, 2 miles below Sentenac Canyon, eastern SD county. Comment
  RSA94839  Senecio aphanactis F. W. Peirson 1951-1 3358 San Diego 6 miles north of San Diuego on Escondido Road Comment
  RSA94909  Cirsium scariosum F. W. Peirson 1920-6-24 2767 San Diego East of Morgan Hill, Palomar Mountains 1433 Comment
  RSA94929  Tetradymia comosa F. W. Peirson 1932-9-4 10470 San Diego Clearing between Campo and Buckman Springs, southeastern San Diego Co. 671 Comment
  RSA95005  Malacothrix glabrata F. W. Peirson 1928-4-20 7852 San Diego San Felipe Creek 1 mile below Senetac Canyon, San Diego 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
  RSA95050  Sonchus asper F. W. Peirson 1924-6-25 4857 San Diego Top of ridge east of Laguna Lakes, Laguna Mountains. Comment
  RSA95112  Agoseris heterophylla var. heterophylla F. W. Peirson 1930-5-11 8785 San Diego near Henshaw Dam. 854 Comment
  RSA95113  Agoseris grandiflora var. grandiflora F. W. Peirson 1924-6-25 4856 San Diego Laguna Mountains: Meadow near Laguna Lakes. Comment
  RSA95204  Microseris heterocarpa F. W. Peirson 1923-3-28 3393 San Diego 6 miles North of San Diego 122 Comment
  RSA95205  Microseris heterocarpa F. W. Peirson 1927-4-19 7255 San Diego edge of bluff above sea; headland south of Torrey Pines Comment
  RSA95208  Stephanomeria exigua subsp. exigua F. W. Peirson 1928-4-22 7884 San Diego The Narrows, San Felipe Creek, eastern San Diego County. Comment
  RSA95252  Taraxacum laevigatum F. W. Peirson 1924-6-25 4836 San Diego Laguna Lakes Region, Laguna Mountains. Comment
  RSA95284  Rhamnus tomentella subsp. tomentella F. W. Peirson 1924-6-22 4795 San Diego At Country Club, Palomar Mts. 1616 Comment
  RSA95285  Rhamnus tomentella subsp. tomentella F. W. Peirson 1920-6-24 2192 San Diego [Unspecified] 1829 Comment
  RSA95292  Rhamnus ilicifolia F. W. Peirson 1930-5-11 8786 San Diego Below Henshaw Dam 671 Comment
  RSA95300  Hibiscus denudatus F. W. Peirson 1928-3-24 7734 San Diego San Felipe Creek, Sentenac Canyon, eastern San Diego Co. Comment
  RSA95316  Sphaeralcea ambigua subsp. ambigua F. W. Peirson 1925-5-15 5895 San Diego 3 miles northwest of Jacumba Comment
  RSA95325  Malacothamnus fasciculatus F. W. Peirson 1912-9-3 775 San Diego Coast near La Jolla. Comment
  RSA95349  Ceanothus oliganthus F. W. Peirson 1926-5-1 6711 San Diego Along trail from Oak Grove to Palomar Mt. Comment
  RSA95355  Ceanothus oliganthus var. orcuttii F. W. Peirson 1925-5-19 5998 San Diego Middle Peak, Cuyamaca Mountains, eastern San Diego County 1677 Comment
  RSA95375  Sidalcea malviflora subsp. sparsifolia F. W. Peirson 1925-5-18 5980 San Diego North shore of Cyamaca Lake 1402 Comment
  RSA95376  Sidalcea malviflora subsp. sparsifolia F. W. Peirson 1924-6-25 4847 San Diego 0.5 mile above camp at Laguna Lakes, Laguna Mts. 1677 Comment
  RSA95387  Sidalcea malviflora subsp. sparsifolia F. W. Peirson 1920-6-24 2179 San Diego East foot of Morgan Hill, Palomar Mts. 1433 Comment
  RSA95393  Ceanothus verrucosus F. W. Peirson 734 San Diego Torrey Pines, coast of San Diego Comment
  RSA97154  Lomatium dasycarpum subsp. dasycarpum F. W. Peirson 1924-6-24 4821 San Diego Henshaw Grade, Palomar Mts. 1219 Comment
  RSA97272  Cornus occidentalis F. W. Peirson 1934-6-22 4786 San Diego Palomar Mt. 1524 Comment
  RSA97292  Garrya flavescens var. pallida F. W. Peirson 1920-6-24 2724 San Diego On east trail to Palomar Mtn. 1524 Comment
  RSA97293  Garrya flavescens subsp. flavescens F. W. Peirson 1924-6-26 4869 San Diego About half way down Vallecito Canyon, east slope of Laguna Mts Comment
  RSA97294  Garrya fremontii F. W. Peirson 1924-6-27 4886 San Diego Monument Peak, Laguna Mts. Comment
  RSA97351  Sanicula arguta F. W. Peirson 1922-4-14 2891 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  RSA97378  Sanicula bipinnatifida F. W. Peirson 1922-4-14 2880 San Diego Hill top at Grosemont, 12 miles east of San Diego. Comment
  RSA97400  Yabea microcarpa F. W. Peirson 1924-6-25 4838 San Diego Laguna Lakes Region, Laguna Mountains. Comment
  RSA97417  Tauschia parishii F. W. Peirson 1926-5-1 6710 San Diego open places about the summit of Palomar Mountain. Comment
  RSA97420  Tauschia arguta F. W. Peirson 1925-5-17 5953 San Diego At foot of steep part of trail from Vallecito Canyon to Laguna Mountains Comment
  RSA97444  Phoradendron macrophyllum F. W. Peirson 1920-6-22 4303 San Diego Oak Grove, Palomar Region 854 Comment
  RSA99344  Sambucus mexicana F. W. Peirson 1924-6-26 4873 San Diego At lower part of steep portion of trail in Vallecito Canyon, east base of Laguna Mountains. Comment
  SEINET10458418  Nemacladus longiflorus Frank W. Peirson 1925-5-15 Peirson 5899 a San Diego 4 miles south of Buckman Springs; on burnt-over hill slope 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
  SEINET10461031  Nemacladus ramosissimus Frank W. Peirson 1925-5-15 Peirson 5899 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



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