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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
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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
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
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