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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
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CAS-BOT-BC101306
Corethrogyne filaginifolia
Frank W. Peirson
1924-7-28
5017
Riverside
Pine Flats Camp, San Jacinto Mts.
1798
Comment
CAS-BOT-BC103904
Salix exigua
Frank W. Peirson
1933-4-15
10650
Riverside
Whitewater River, 4 1/2 miles above the bridge
701
Comment
CAS-BOT-BC106225
Brickellia desertorum
F. W. Peirson
1920-12-29
2336
Riverside
Andreas Canyon, Colorado Desert
243
Comment
CAS-BOT-BC106344
Brickellia atractyloides var. arguta
Frank W. Peirson
1928-4-24
7900
Riverside
Cottonwood Spring
Comment
CAS-BOT-BC109457
Sidotheca caryophylloides
Frank W. Peirson
1924-7-29
5019
Riverside
San Jacinto Mountains. Banning-Idlewild Road.
1767
Comment
CAS-BOT-BC117867
Carex sartwelliana
Frank Warrington Peirson
1924-7-28
5015
Riverside
Near stream, Pine Flats Camp, San Jacinto Mts.
1798
Comment
CAS-BOT-BC128448
Salix lasiolepis var. lasiolepis
Frank W. Peirson
1933-4-13
10646
Riverside
Road from Deep Canyon to Idlewild at the Palm Creek crossing.
1356
Comment
CAS-BOT-BC128450
Salix lasiolepis var. lasiolepis
Frank W. Peirson
1933-4-14
10648
Riverside
Banning - Idlewild Road
1524
Comment
CAS-BOT-BC131424
Encelia frutescens
Frank W. Peirson
1922-4-12
s.n.
Riverside
30 miles south of Coachella
Comment
CAS-BOT-BC137649
Aristida adscensionis
Frank W. Peirson
1921-3-23
2374
Riverside
Colorado Desert. Deep Canyon.
335
Comment
CAS-BOT-BC144850
Potentilla rimicola
Frank W. Peirson
1924-7-27
5000
Riverside
1/2 mile west of Deer Spring, San Jacinto Mts.
Comment
CAS-BOT-BC171743
Epilobium canum subsp. latifolium
F. W. Peirson
1922-12-27
3336
Riverside
Andreas Canyon between forks and at North Fork, where trail branch comes down, Colorado Desert
Comment
CAS-BOT-BC181570
Crossosoma bigelovii
Frank W. Peirson
1922-4-9
s.n.
Riverside
Andreas Canyon - Colorado Desert
457
Comment
CAS-BOT-BC191257
Chorizanthe fimbriata var. fimbriata
Frank W. Peirson
1922-5-19
3024
Riverside
3 miles NE of Murietta
Comment
CAS-BOT-BC191854
Chorizanthe corrugata
Frank W. Peirson
1927-4-12
7175
Riverside
Painted Canyon, near camp at forks
Comment
CAS-BOT-BC195675
Distichlis spicata
Frank W. Peirson
1922-4-9
4331
Riverside
Murray Canyon, Colorado Desert
Comment
CAS-BOT-BC195677
Distichlis spicata
Frank W. Peirson
1922-4-29
4541
Riverside
South of Lake Elsinore
Comment
CAS-BOT-BC198169
Deschampsia danthonioides
Frank W. Peirson
1922-5-19
3022
Riverside
10 mi. NE of Murietta along roadside, Menifee Valley
Comment
CAS-BOT-BC198170
Deschampsia danthonioides
Frank W. Peirson
1922-5-19
3022
Riverside
Menifee Valley
Comment
CAS-BOT-BC202502
Argythamnia serrata
F. W. Peirson
1922-12-28
4437
Riverside
Andreas Canyon, Colorado Desert
243
Comment
CAS-BOT-BC202569
Tetracoccus hallii
Frank W. Peirson
1928-4-24
7894
Riverside
Cottonwood Spring
Comment
CAS-BOT-BC207047
Bernardia incana
Frank W. Peirson
1928-4-25
7917
Riverside
Cottonwood Spring
Comment
CAS-BOT-BC207130
Argythamnia lanceolata
F. W. Peirson
1921-3-23
2805
Riverside
Deep Canyon Wash, 12 miles southeast of Palm Springs, Colorado Desert
152
Comment
CAS-BOT-BC213221
Ayenia compacta
Frank W. Peirson
1922-4-9
9600
Riverside
Andreas Canyon, Palm Springs Region
457
Comment
CAS-BOT-BC221307
Calystegia macrostegia subsp. intermedia
Frank W. Peirson
1929-5-4
8333
Riverside
Lake Elsinore
Comment
CAS-BOT-BC227046
Leptosiphon floribundus subsp. glaber
Frank W. Peirson
1922-4-28
946
Riverside
Leach Canon [Canyon], Elsinore Region
Comment
CAS-BOT-BC227049
Leptosiphon floribundus subsp. glaber
Frank W. Peirson
1922-4-28
946
Riverside
Leach Canon [Canyon], Elsinore Region
Comment
CAS-BOT-BC231785
Chilopsis linearis
Frank W. Peirson
1921-4-13
1173
Riverside
Foot of Deep Canyon
304
Comment
CAS-BOT-BC246240
Chorizanthe rigida
Frank W. Peirson
1922-4-11
2863
Riverside
Deep Canyon Wash, 12 miles southeast of Palm Springs
243
Comment
CAS-BOT-BC249896
Eriogonum fasciculatum var. flavoviride
Frank W. Peirson
1928-4-24
7907
Riverside
Cottonwood Spring
Comment
CAS-BOT-BC250139
Eriogonum fasciculatum var. polifolium
Frank W. Peirson
1919-4-14
1759
Riverside
Murray Canon [Canyon], Colorado Desert
Comment
CAS-BOT-BC255667
Poa bigelovii
F. W. Peirson
1921-3-22
2392
Riverside
Murray Canyon, Palm Springs Region, Colorado Desert
457
Comment
CAS-BOT-BC261783
Eriogonum wrightii var. nodosum
Frank W. Peirson
1922-12-27
3333
Riverside
Andreas, between Forks, East slope San Jacinto
Comment
CAS-BOT-BC263508
Eriogonum thomasii
Frank W. Peirson
1927-4-12
7171
Riverside
Foot of canyon, Painted Canyon
Comment
CAS-BOT-BC263518
Eriogonum thomasii
Frank W. Peirson
1926-1-31
6490
Riverside
Abundant at Dos Palmas, Colorado Desert
Comment
CAS-BOT-BC263519
Eriogonum thomasii
Frank W. Peirson
1927-4-12
7171
Riverside
Painted Canyon
Comment
CAS-BOT-BC268189
Eriogonum umbellatum var. munzii
Frank W. Peirson
1924-7-28
5014
Riverside
Pine Flats Camp, San Jacinto Mts.
1798
Comment
CAS-BOT-BC287641
Ericameria linearifolia
Frank W. Peirson
1921-3-21
2380
Riverside
Gordon Trail, E slope San Jacinto Mts
914
Comment
CAS-BOT-BC298482
Eriophyllum ambiguum var. paleaceum
F. W. Peirson
1920-2-16
1387
Riverside
Below Murray Canyon, Palm Springs region
274
Comment
CAS-BOT-BC299541
Ericameria paniculata
Frank W. Peirson
1922-12-26
3331
Riverside
Cabazon old road, Colorado Desert
Comment
CAS-BOT-BC301784
Eriophyllum multicaule
Frank W. Peirson
1922-4-29
2927
Riverside
Road to Leach Canon [Canyon], Elsinore
Comment
CAS-BOT-BC301791
Eriophyllum multicaule
Frank W. Peirson
1922-4-29
2927
Riverside
Road to Leach Canyon, about 1 mile north of Lake Elsinore
Comment
CAS-BOT-BC303585
Geraea canescens
Frank W. Peirson
1921-3-23
2782
Riverside
10 miles SE of Palm Springs
Comment
CAS-BOT-BC307397
Gnaphalium palustre
F. W. Peirson
1930-5-10
8769
Riverside
Hemet Plateau, near March Field road from Riverside to Perris
457
Comment
CAS-BOT-BC30905
Acamptopappus sphaerocephalus
Frank W. Peirson
1927-4-11
7154
Riverside
Colorado Desert, 0.5 mile below Whitewater Bridge
Comment
CAS-BOT-BC312587
Hulsea vestita subsp. callicarpha
Frank W. Peirson
1924-7-27
5005
Riverside
Near Deer Spring, San Jacinto Mts.
2590
Comment
CAS-BOT-BC326834
Peucephyllum schottii
Frank W. Peirson
1919-4-13
4737
Riverside
1st canyon east of Palm Canyon, Colorado Desert
Comment
CAS-BOT-BC330345
Pentachaeta aurea
F. W. Peirson
1922-5-19
3037
Riverside
Road along San Jacinto River, San Jacinto Mts.
1143
Comment
CAS-BOT-BC330346
Pentachaeta aurea
F. W. Peirson
1938-5-30
s.n.
Riverside
Slopes S of the Shell Gas Station; Thomas Mountain, Hemet Valley
1402
Comment
CAS-BOT-BC338933
Lasthenia californica
F. W. Peirson
1922-4-29
4520
Riverside
Lake Elsinore
374
Comment
CAS-BOT-BC342257
Logfia filaginoides
F. W. Peirson
1921-3-22
5277
Riverside
Murray Canyon near Palm Springs
487
Comment
CAS-BOT-BC349790
Monoptilon bellioides
F. W. Peirson
1920-2-15
1383
Riverside
Near Palm Springs, Coachella Valley
Comment
CAS-BOT-BC349791
Monoptilon bellioides
F. W. Peirson
1926-1-31
6491
Riverside
Dos Palmas, northern Colorado Desert
Comment
CAS-BOT-BC355863
Pectis papposa var. papposa
Frank W. Peirson
1938-11-12
12636
Riverside
Imperial Valley Boulevard, about sea level
Comment
CAS-BOT-BC361118
Lasthenia microglossa
Peirson
1919-4-14
s.n.
Riverside
Murray Canon
487
Comment
CAS-BOT-BC367545
Lasthenia microglossa
F. W. Peirson
1919-4-14
1376
Riverside
Murray Canyon near Palm Springs
487
Comment
CAS-BOT-BC376036
Stylocline gnaphaloides
Frank W. Peirson
1930-5-10
8775
Riverside
Summit of St. Johns Grade south of Hemet
762
Comment
CAS-BOT-BC379634
Layia platyglossa
Frank W. Peirson
1922-5-19
3042
Riverside
Hemet Valley; San Jacinto Mts.
1341
Comment
CAS-BOT-BC381978
Uropappus lindleyi
F. W. Peirson
1921-3-22
2381
Riverside
Murray Canyon at east base of Mt. San Jacinto
457
Comment
CAS-BOT-BC390553
Spergularia platensis
Frank W. Peirson
1922-4-29
2926
Riverside
South of Lake Elsinore
Comment
CAS-BOT-BC407621
Gilia ochroleuca subsp. exilis
Frank W. Peirson
1919-4-15
921
Riverside
Whitewater Grade above Cabazon
Comment
CAS-BOT-BC407622
Gilia ochroleuca subsp. exilis
Frank W. Peirson
1928-3-24
7725
Riverside
Temescal Canyon, near auto camp
304
Comment
CAS-BOT-BC407623
Gilia ochroleuca subsp. exilis
Frank W. Peirson
1938-5-30
12413
Riverside
South of the Shell Gas station, Thomas Mountain, Hemet Valley
Comment
CAS-BOT-BC419623
Eschscholzia parishii
Frank W. Peirson
1928-4-23
7888
Riverside
2 1/2 miles below Cottonwood Spring, (direct road)
Comment
CAS-BOT-BC419624
Eschscholzia parishii
Frank W. Peirson
1927-4-12
7167
Riverside
Painted Canyon. At the Forks
Comment
CAS-BOT-BC419651
Eschscholzia parishii
Frank W. Peirson
1926-2-22
s.n.
Riverside
Thousand Palm Canyon near Indio
Comment
CAS-BOT-BC432279
Lithophragma affine
Frank W. Peirson
1922-5-19
4189
Riverside
San Jacinto River
1143
Comment
CAS-BOT-BC46154
Agoseris heterophylla
F. W. Peirson
1922-5-20
3045
Riverside
Hemet Valley, San Jacinto Mts.
1371
Comment
CAS-BOT-BC60106
Lepidium virginicum var. menziesii
Frank W. Peirson
1922-5-21
3031
Riverside
San Jacinto Mountains. Hemet Valley.
1356
Comment
CAS-BOT-BC68029
Cryptogramma acrostichoides
F. W. Peirson
1921-8-14
2557
Riverside
Sierra Nevada - Triple Falls, Cartridge Creek
2438
Comment
CAS-BOT-BC70037
Cheilanthes covillei
Frank W. Peirson
1922-4-10
s.n.
Riverside
Murray Canyon, Palm Springs Region
457
Comment
CAS-BOT-BC83346
Myosurus minimus
Frank W. Peirson
1922-4-29
2945
Riverside
South of Lake Elsinore.
374
Comment
CAS-BOT-BC83347
Myosurus minimus
Frank W. Peirson
1922-5-20
3035
Riverside
About 1 mile belwo Kenworthy. Hemet Valley, San Jacinto Mountains.
1386
Comment
CAS-BOT-BC83348
Myosurus minimus
Frank W. Peirson
1922-5-19
4171
Riverside
Menifee Valley.
Comment
CAS-BOT-BC83349
Myosurus minimus
Frank W. Peirson
1922-5-19
4171
Riverside
Menifee Valley.
Comment
CAS-BOT-BC90197
Artemisia californica
Frank W. Peirson
1922-12-27
3338
Riverside
between the forks, Andreas Canyon, Palm Springs region, Colorado Desert
609
Comment
CAS-BOT-BC91880
Platystemon californicus
Frank W. Peirson
1922-4-28
5325
Riverside
Temescal Canyon.
274
Comment
CAS-BOT-BC92822
Clematis pauciflora
Frank W. Peirson
1921-3-22
2372
Riverside
Murray Canyon.
426
Comment
CAS-BOT-BC9454
Mimulus diffusus
Frank Warrington Peirson
1922-4-30
2934
Riverside
Hills south of Tuscalota Creek, Aguanga to Hemet Road
Comment
CAS-BOT-BC95419
Bowlesia incana
F. W. Peirson
1922-4-30
2954
Riverside
about 1.5 mi.es from Temecula River on Hemet Road, Lancaster Valley
518
Comment
JEPS1237
Tricardia watsonii
Frank W. Peirson
1918-1
5
Riverside
Whitewater; San Gorgonio Pass
Comment
JEPS13477
Deinandra kelloggii
Frank W. Peirson
1925-5-20
6011
Riverside
Aguanga
Comment
JEPS18058
Orcuttia californica
Frank W. Peirson
1922-5-19
3020
Riverside
Menifee Valley
Comment
JEPS3007
Mimulus palmeri
Frank W. Peirson
1929-5-4
Riverside
summit St. John's Grade
792
Comment
JEPS35729
Eriogonum deflexum var. deflexum
Frank W. Peirson
1928-11-30
Riverside
foot of canyon below Shavers Well
0
Comment
JEPS41248
Petalonyx linearis
F. W. Peirson
1921-3-23
2376
Riverside
Deep Canyon; Colorado Desert
335
Comment
JEPS4196
Stemodia durantifolia
F. W. Peirson
1919-4-14
Riverside
Palm Springs, foot of Murray Canyon; Mt. San Jacinto
Comment
JEPS4469
Stemodia durantifolia
F. W. Peirson
1919-4-14
Riverside
Mount San Jacinto, Palm Springs, foot of Murray Canyon Murray Canyon; Mount San Jacinto, Palm Springs Region, Murray Canyon
Comment
JEPS45139
Amelanchier utahensis
F. W. Peirson
1922-5-20
3057
Riverside
Hemet Valley; San Jacinto Mts.
1371
Comment
JEPS47552
Allium marvinii
Frank W. Peirson
1921-3-19
2394
Riverside
4 mi w Beaumont
Comment
JEPS47607
Allium cratericola
Frank W. Peirson
1922-5-21
3069
Riverside
small side canyon, on e side of Hemet Valley San Jacinto Mts., Hemet Valley
1371
Comment
JEPS49608
Philadelphus microphyllus var. stramineus
Frank W. Peirson
1924-7-27
4991
Riverside
Dark Canyon, Mt. San Jacinto.
2286
Comment
JEPS54762
Astragalus nuttallianus
F. W. Peirson
1922-4-9
584
Riverside
foot of Murray Canyon e base Mt. San Jacinto, Palm Sprs, Murray Canyon (Palm Sprs., e base Mt. San Jacinto)
Comment
JEPS54817
Astragalus pachypus var. jaegeri
Frank W. Peirson
1928-3-24
Riverside
Temecula River Road s Dripping Spring; Temecula River Road s of Dripping Spring
457
Comment
JEPS57788
Chorizanthe leptotheca
Frank W. Peirson
1925-5-20
6012
Riverside
Aguanga
Comment
JEPS57953
Nemacaulis denudata var. gracilis
Frank W. Peirson
1917-1
6
Riverside
road se Palm Springs
Comment
JEPS59863
Salsola tragus
Frank W. Peirson
1918-1
7
Riverside
e. base Mt. San Jacinto, Andreas Canyon
Comment
JEPS67559
Cryptantha decipiens
F. W. Peirson
1921-3-21
2368 a
Riverside
above Andreas Canyon (Gordon trail)
1066
Comment
JEPS7671
Nemacladus rubescens
Frank W. Peirson
1926-1-31
6486
Riverside
about 2 mi from station on Mecca Road, Dos Palmas; Colorado Desert, Dos Palmas
Comment
LA38933
Mimulus guttatus
Frank W. Peirson;
1922-4-8
4720
Riverside
Murray Canyon, Palm Springs. In lower part of canyon
Comment
LA38961
Mimulus palmeri
Frank W. Peirson;
1922-4-30
2934
Riverside
below summit of St. Johns Grade
761
Comment
LA95899
Mimulus rattanii
Frank W. Peirson;
1931-5-30
9379
Riverside
Santiago Peak, Glen Ivy Trail
1219
Comment Read comments Sep 20 2019
PASA1050
Lathyrus alefeldii
Frank W. Peirson
1922-4-28
Riverside
Leach canyon, Elsinore Region
548
Comment
PASA1079
Lotus davidsonii
Frank W. Peirson
1924-7-27
Riverside
Dark Canyon, San Jacinto Mts.
2224
Comment
PASA1086
Lotus grandiflorus
Frank W. Peirson
1924-7-27
Riverside
Dark Canyon, San Jacinto Mts.
1706
Comment
PASA1115
Lotus subpinnatus
Frank W. Peirson
1930-5-10
Riverside
Hemet Plateau near March Field
457
Comment
PASA1116
Lotus subpinnatus
Frank W. Peirson
1930-5-10
Riverside
Hemet Plateau, along boulevard opposite March field
457
Comment
PASA1119
Lotus tomentellus
Frank W. Peirson
1927-4-12
Riverside
Painted Canyon, Colorado Desert
Comment
PASA1143
Monardella macrantha var. longiloba
Frank W. Peirson
1924-7-27
Riverside
Dark Canyon, San Jacinto Mts.
2224
Comment
PASA1246
Poa bigelovii
Frank W. Peirson
1921-3-22
Riverside
Murray Canyon
457
Comment
PASA1248
Orcuttia californica
Frank W. Peirson
1922-5-19
Riverside
Manfee Valley
426
Comment
PASA127
Mimulus latidens
Frank W. Peirson
1922-5-19
Riverside
Menifee Valley
426
Comment
PASA1350
Peucephyllum schottii
Frank W. Peirson
1930-5-29
Riverside
Painted Canyon
Comment
PASA1563
Lasthenia glabrata var. coulteri
Frank W. Peirson
1922-4-29
Riverside
Lake Elsinore
374
Comment
PASA1624
Platystemon californicus
Frank W. Peirson
1922-4-29
Riverside
Field south of Lake Elsinore
377
Comment
PASA166
Pedicularis densiflora
Frank W. Peirson
1922-4-29
Riverside
1 mile east of Dripping Spring, Temecula river
518
Comment
PASA1886
Boisduvalia glabella
Frank W. Peirson
1922-5-19
Riverside
Menifee Valley
426
Comment
PASA1890
Epilobium adenocaulon
Frank W. Peirson
1924-7-28
Riverside
Pine Flats Camp, San Jacinto Mts.
1798
Comment
PASA1894
Epilobium glaberrimum
Frank W. Peirson
1924-7-28
Riverside
Pine Flats Camp. San Jacinto Mts.
1798
Comment
PASA1957
Pectocarya setosa
Frank W. Peirson
1921-3-21
Riverside
Gordon Trail, east slope San Jacinto Mt.
1066
Comment
PASA1968
Harpagonella palmeri
Frank W. Peirson
1922-5-19
Riverside
2 _ miles from Murietta on the road to Perris
Comment
PASA1998
Amsinckia douglasiana
Frank W. Peirson
1921-3-22
Riverside
Murray Canyon, Palm Springs Region
396
Comment
PASA2160
Brickellia arguta
Frank W. Peirson
1919-4-13
Riverside
Along the Tahquitz stream, east of Palm Springs
152
Comment
PASA2170
Hofmeisteria pluriseta
Frank W. Peirson
1927-4-12
Riverside
Painted Canyon
Comment
PASA2173
Baeria aristata
Frank W. Peirson
1922-5-19
Riverside
5 miles northeast of Murietta
457
Comment
PASA2175
Baeria chrysostoma var. gracilis
Frank W. Peirson
1922-4-29
Riverside
Lake Elsinore
374
Comment
PASA2179
Baeria microglossa
Frank W. Peirson
1919-4-14
Riverside
Murray Canyon
Comment
PASA2215
Eriophyllum multicaule
Frank W. Peirson
1928-4-19
Riverside
Hills north of Elsinore
457
Comment
PASA2297
Psilocarphus globiferus
Frank W. Peirson
1922-4-29
Riverside
Lake Elsinore
380
Comment
PASA2318
Layia platyglossa
Frank W. Peirson
1919-4-15
Riverside
Whitewater Grade near Cabazon
548
Comment
PASA2335
Trixis californica
Frank W. Peirson
1919-4-14
Riverside
Murray Canyon, Palm Springs Region
Comment
PASA2373
Euonymus parishii
Frank W. Peirson
1924-7-27
Riverside
Dark Canyon, San Jacinto Mts.
1767
Comment
PASA2404
Ceanothus greggii var. perplexans
Frank W. Peirson
1932-5-20
Riverside
Hemet Valley, San Jacinto Mts.
1447
Comment
PASA247
Trifolium stenophyllum
Frank W. Peirson
1922-4-29
Riverside
Lake Elsinore
380
Comment
PASA2513
Ceanothus sorediatus
Frank W. Peirson
1931-5-30
Riverside
Santiago Peak
1219
Comment
PASA2519
Ceanothus tomentosus
Frank W. Peirson
1922-4-30
Riverside
St John's Grade, bautista Creek
761
Comment
PASA2553
Delphinium parryi
Frank W. Peirson
1922-5-18
3051
Riverside
Road south of Lake Elsinore
377
Comment
PASA2571
Myosurus aristatus
Frank W. Peirson
1922-5-20
3035
Riverside
Helmet Valley, San Jacinto Mtns.
1386
Comment
PASA2572
Myosurus minimus
Frank W. Peirson
1922-4-29
2945
Riverside
Lake Elsinore
Comment
PASA2659
Arabis holboellii var. fendleri
Frank W. Peirson
1922-4-10
2869
Riverside
Murray Canyon, Palm Springs Region
609
Comment
PASA2723
Astragalus douglasii var. parishii
Frank W. Peirson
1922-5-20
3342
Riverside
Hemet Valley, San Jacinto Mtns.
1371
Comment
PASA2724
Astragalus douglasii var. parishii
Frank W. Peirson
1922-4-29
2955
Riverside
Aguanga
609
Comment
PASA2744
Astragalus pachypus var. jaegeri
Frank W. Peirson
1922-4-29
2950
Riverside
1 mile south of Dripping Spring, Temecula River
518
Comment
PASA2745
Astragalus pomonensis
Frank W. Peirson
1920-6-6
7696
Riverside
Dripping Spring, Temecula River
457
Comment
PASA299
Specularia biflora
Frank W. Peirson
1926-5-2
Riverside
Grade north of Dripping Spring, Temecula River
426
Comment
PASA303
Downingia immaculata
Frank W. Peirson
1922-4-29
Riverside
Field south of Lake Elsinore
380
Comment
PASA307
Nemacladus rigidus
Frank W. Peirson
1928-4-24
Riverside
Cottonwood Spring, 1/2 mile below spring in broad sandy wash
Comment Read comments Jun 24 2016
PASA330
Microseris douglasii
Frank W. Peirson
1922-4-30
Riverside
1 mile west of Lakeview
426
Comment
PASA352
Uropappus lindleyi
Frank W. Peirson
1922-4-29
Riverside
South of Lake Elsinore
380
Comment
PASA395
Capsella elliptica
Frank W. Peirson
1921-4-11
Riverside
Murray Canyon, Palm Springs Region
Comment
PASA508
Brodiaea synandra
Frank W. Peirson
1922-5-19
Riverside
2 miles southeast of Perris
Comment
PASA617
Cyperus laevigatus
Frank W. Peirson
1924-12-30
Riverside
Thousand Palms Canyon
121
Comment Read comments Jun 24 2016
PASA627
Juncus canaliculatus
Frank W. Peirson
1924-7-28
Riverside
Pine Flats Camp, San Jacinto Mts.
1798
Comment
PASA628
Juncus bufonius
Frank W. Peirson
1922-4-29
Riverside
South side Lake Elsinore
Comment
PASA673
Geranium carolinianum
Frank W. Peirson
1922-4-10
Riverside
Murray Canyon
304
Comment
PASA686
Linum micranthum
Frank W. Peirson
1922-5-19
Riverside
Two and one-half miles northeast of Murietta on the Menifee Valley Raod
Comment
PASA822
Lupinus concinnus
Frank W. Peirson
1922-5-19
Riverside
Road to Keen's Camp, San Jacinto Mts.
Comment
PASA833
Dicoria canescens
Frank W. Peirson
1920-12-29
Riverside
One and one-half miles east of Thite-water
304
Comment Read comments Nov 12 2014
PASA881
Penstemon linarioides var. californicus
Frank W. Peirson
1922-5-21
Riverside
Hamet Valley, San Jacinto Mts.
1371
Comment
PASA949
Senecio monoensis
Frank W. Peirson
1928-4-23
Riverside
2 1/2 miles below Cottonwood Spring
Comment
PASA959
Tetradymia comosa
Frank W. Peirson
1920-6-22
Riverside
Temescal Canyon
304
Comment Read comments Jun 24 2016
POM128742
Eriogonum thomasii
F. W. Peirson
1927-4-12
7171
Riverside
Painted Canyon.
Comment
POM128749
Trichoptilium incisum
F. W. Peirson
1927-4-12
s.n.
Riverside
Painted Canyon
Comment
POM128750
Chorizanthe corrugata
F. W. Peirson
1927-4-12
7175
Riverside
Painted Canyon.
Comment
POM14735
Stephanomeria pauciflora
F. W. Peirson
1922-12-27
3335
Riverside
Andreas Canyon, near Palm Springs.
Comment
POM14740
Chrysothamnus paniculatus
F. W. Peirson
1922-12-26
3331
Riverside
Cabazon, San Gorgonio Pass
Comment Read comments Mar 13 2011
POM14741
Phacelia ambigua
F. W. Peirson
1922-4-11
s.n.
Riverside
Deep Canyon Wash, Coachella Valley
244
Comment
POM193461
Leptosiphon lemmonii
F. W. Peirson
1929-5-4
8335
Riverside
Summit of St John's grade
793
Comment
POM193710
Allium peninsulare var. peninsulare
F. W. Peirson
1933-4-15
10649
Riverside
Whitewater River, 4.5 miles above the bridge.
701
Comment
POM212930
Cryptantha holoptera
F. W. Peirson
1935-4-17
11475
Riverside
30 miles north of Blythe.
Comment
POM21637
Psorothamnus schottii
F. W. Peirson
1921-4-13
566
Riverside
Deep Canyon Wash, Coachella Valley
Comment
POM228765
Pectis papposa
F. W. Peirson
1937-11-27
12245
Riverside
La quinta, about sea level.
Comment
POM254666
Atriplex lentiformis
F. W. Peirson
1924-12-30
s.n.
Riverside
Thousand Palms Canyon, Coachella Valley.
122
Comment
POM317055
Lupinus bicolor subsp. microphyllus
F. W. Peirson
1922-4-29
5224
Riverside
South of Lake Elsinore.
381
Comment
POM47633
Lotus argophyllus subsp. decorus
F. W. Peirson
1919-4-13
s.n.
Riverside
Murray Canyon, Palm Springs region.
Comment
POM47635
Astragalus nuttallianus var. cedrosensis
F. W. Peirson
1922-4-9
584
Riverside
Murray Canyon. North bank, 1/2 mile above mouth.
Comment
POM47667
Leymus triticoides
F. W. Peirson
1924-6-1
4678
Riverside
River lands along Santa Ana River.
152
Comment
POM48345
Tidestromia oblongifolia
F. W. Peirson
1924-12-30
5416
Riverside
Thousand-Palms Canyon
122
Comment
POM48478
Dicoria canescens
F. W. Peirson
1924-12-30
5425
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
POM48555
Asclepias subulata
F. W. Peirson
1924-12-30
5420
Riverside
Thousand-Palms Canyon, north side of Coachella Valley.
122
Comment
POM48556
Eustoma exaltatum
F. W. Peirson
1924-12-30
5419
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
POM49370
Stachys stebbinsii
F. W. Peirson
1924-6-2
s.n.
Riverside
Near foot of Temescal canyon.
Comment
POM71103
Calystegia macrostegia subsp. intermedia
F. W. Peirson
1929-5-4
8333
Riverside
In clumps on open land near Lake Elsinore.
Comment
POM9919
Stemodia durantifolia
F. W. Peirson
1920-12-28
s.n.
Riverside
Murray Canyon near Palm Springs
Comment
RSA0008494
Lasthenia glabrata subsp. coulteri
F. W. Peirson
1922-4-29
2956
Riverside
South of Lake Elsinore.
381
Comment
RSA0017272
Gilia ochroleuca subsp. exilis
F. W. Peirson
1919-4-15
921
Riverside
Whitewater Grade above Cabazon, San Gorgonio Pass.
Comment
RSA0070921
Pentagramma maxonii
F. W. Peirson
1921-3-20
5357
Riverside
Andreas Canyon, near Palm Springs.
243
Comment
RSA100199
Lonicera subspicata var. denudata
F. W. Peirson
1920-6-22
217
Riverside
Dripping Springs, Temecula River
457
Comment
RSA100257
Plectritis ciliosa subsp. insignis
F. W. Peirson
1922-5-19
3047
Riverside
San Jacinto River.
1143
Comment
RSA100339
Triodanis biflora
F. W. Peirson
1926-5-2
6723
Riverside
Grade north of Dripping Spring, Temecula River.
427
Comment
RSA357376
Orcuttia californica
F. W. Peirson
1922-5-19
3028
Riverside
Menifee Valley
Comment
RSA392815A
Oxytheca trilobata
F. W. Peirson
1929-7-29
5020
Riverside
Banning to Idyllwild Road
1768
Comment
RSA408712
Monardella australis subsp. australis
F. W. Peirson
1924-7-27
4993
Riverside
Dark Canyon, near Deer Springs, San Jacinto Mts.
Comment
RSA409772
Cuscuta salina
F. W. Peirson
1924-6-21
s.n.
Riverside
South of Elsinore
Comment
RSA428780
Solanum umbelliferum
F. W. Peirson
1922-4-29
4487
Riverside
Leach Canyon. (base of Santa Ana Mts., near Elsinore)
534
Comment
RSA446662
Stachys bullata
F. W. Peirson
1924-6-21
4709
Riverside
Temescal Canyon.
290
Comment
RSA448211
Sidalcea malviflora subsp. sparsifolia
F. W. Peirson
1922-5-20
4309
Riverside
Hemet Valley, San Jacinto Mountains.
1372
Comment
RSA453237
Prunus fremontii
F. W. Peirson
1922-12-7
s.n.
Riverside
Andreas Canyon.
610
Comment
RSA462211
Dodecatheon redolens
F. W. Peirson
1924-7-27
4999
Riverside
Deer Springs, San Jacinto Mountains.
Comment
RSA498235
Astragalus lentiginosus var. coachellae
F. W. Peirson
1920-2-17
s.n.
Riverside
Whitewater River, Colorado Desert, river at bridge.
Comment
RSA498417
Cercidium floridum
F. W. Peirson
1919-4-15
575
Riverside
Palm Springs. Large tree S of town.
Comment
RSA498671
Horkelia clevelandii
F. W. Peirson
1924-7-28
5006
Riverside
Pine Flats Camp
1799
Comment
RSA498786
Lotus rigidus
F. W. Peirson
1920-2-16
s.n.
Riverside
Murray Canyon, Palm Springs region.
274
Comment
RSA523971
Mimulus diffusus
F. W. Peirson
1929-5-4
s.n.
Riverside
Summit of St John's grade.
793
Comment
RSA569479
Tetracoccus
F. W. Peirson
1928-4-24
s.n.
Riverside
Cottonwood Springs.
Comment Read comments Oct 9 2010
RSA62011
Justicia californica
F. W. Peirson
1935-2-22
s.n.
Riverside
Deep Canyon, about 1000 ft.[west margin Sonoran Desert, Santa Rosa Mtns. -SDW]
305
Comment
RSA64578A
Eriogonum reniforme
F. W. Peirson
1914-04
1737
Riverside
Whitewater, west end of Coachella Valley.
Comment
RSA64578B
Eriogonum thomasii
F. W. Peirson
1914-04
1737
Riverside
Whitewater, west end of Coachella Valley.
Comment
RSA64581
Eriogonum reniforme
F. W. Peirson
1928-4-24
7911
Riverside
Cottonwood Springs, northern Colorado Desert
Comment Read comments Oct 9 2010
RSA64582
Eriogonum pusillum
F. W. Peirson
1933-4-13
10642
Riverside
Deep Canyon to Idyllwild, Santa Rosa Mountains
1372
Comment
RSA64583
Eriogonum pusillum
F. W. Peirson
1928-4-24
7912
Riverside
Below Cottonwood Spring, northern edge of Colorado Desert.
Comment
RSA64587
Eriogonum pusillum
F. W. Peirson
1928-3-10
7702
Riverside
Just east of Whitewater Bridge, near Whitewater, at head of Coachella Valley.
Comment
RSA64621
Eriogonum thomasii
F. W. Peirson
1926-1-31
6490
Riverside
Dos Palmas [Spring], Colorado Desert.
Comment
RSA64760
Eriogonum thurberi
F. W. Peirson
1914-04
1738
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA64763
Eriogonum inflatum var. deflatum
F. W. Peirson
1932-11-26
9660
Riverside
Thousand Palms
Comment
RSA64889
Oxytheca emarginata
F. W. Peirson
1922-5-21
3034
Riverside
Hemet Valley, San Jacinto Mts.
1372
Comment
RSA64893
Oxytheca caryophylloides
F. W. Peirson
1924-7-29
5019
Riverside
1 miles west of Fullers Mill on Banning to Idyllwild Road, San Jacinto Mts.
1768
Comment
RSA64894
Oxytheca trilobata
F. W. Peirson
1922-5-21
5349
Riverside
Hemet Valley, San Jacinto Mts
1372
Comment
RSA64957
Chenopodium pratericola
F. W. Peirson
1918-03
s.n.
Riverside
Field near Indio.
Comment
RSA65002
Nemacaulis denudata var. gracilis
F. W. Peirson
1917-4-1
1780
Riverside
Palm Springs.
Comment
RSA65010
Eriogonum wrightii var. nodosum
F. W. Peirson
1922-12-27
3333
Riverside
Andreas Canyon, east base of San Jacinto Mountains
610
Comment
RSA65011
Eriogonum wrightii var. membranaceum
F. W. Peirson
1937-11-27
12320
Riverside
Deep Canyon Rd. at Forest Service camp, a mile or so east of crossing of the Palm Canyon Stream. N. base of Santa Rosa Mountains.
1372
Comment
RSA65012
Eriogonum wrightii var. nodosum
F. W. Peirson
1920-12-28
2340
Riverside
Along Palm Canyon stream below the Canyon.
Comment
RSA65036
Silene parishii var. viscida
F. W. Peirson
1924-7-27
5001
Riverside
Pinnacle, 0.5 miles west of Deer Springs,
Comment Read comments Nov 17 2011
RSA65122
Eriogonum deflexum var. deflexum
F. W. Peirson
1928-11-30
8215
Riverside
Near Cottonwood Spring, west end of Eagle Mountains.
Comment Read comments Oct 9 2010
RSA65123
Eriogonum deflexum var. deflexum
F. W. Peirson
1927-4-12
7164
Riverside
Painted canyon, near Mecca.
Comment
RSA65145
Eriogonum fasciculatum
F. W. Peirson
1928-4-24
7907
Riverside
Cottonwood Spring, west end of Eagle Mtns.
Comment
RSA65148
Eriogonum fasciculatum var. polifolium
F. W. Peirson
1919-4-14
1759
Riverside
Murray Canyon, near Palm Springs.
Comment
RSA65154
Eriogonum elongatum
F. W. Peirson
1933-4-15
10651
Riverside
Whitewater River, 4.5 miles above the bridge.
701
Comment
RSA65160
Chorizanthe leptotheca
F. W. Peirson
1925-5-20
6012
Riverside
Aguanga
Comment
RSA65168
Chorizanthe parryi
F. W. Peirson
1922-5-19
3055
Riverside
5 miles northeast of Murrieta on road to Perris
Comment
RSA65172
Chorizanthe fimbriata var. fimbriata
F. W. Peirson
1920-6-22
2165
Riverside
Dripping Spring southeast of Temecula
457
Comment Read comments Nov 4 2014
RSA65174
Chorizanthe fimbriata var. fimbriata
F. W. Peirson
1922-5-19
3024
Riverside
3 miles northeast of Murrieta.
Comment
RSA65184
Chorizanthe corrugata
F. W. Peirson
1926-2-22
6509
Riverside
Thousand-Palms Canyon.
152
Comment
RSA65200
Chorizanthe brevicornu var. brevicornu
F. W. Peirson
1920-2-16
1775
Riverside
East of Palm Springs.
Comment
RSA65230
Eriogonum apiculatum
F. W. Peirson
1924-7-29
5026
Riverside
Open Mountain slope on road from Banning to Idyllwild, San Jacinto Mountains.
1677
Comment
RSA65245
Chorizanthe rigida
F. W. Peirson
1927-4-12
7174
Riverside
Painted canyon, near Mecca.
Comment
RSA65246
Chorizanthe rigida
F. W. Peirson
1922-4-11
2863
Riverside
Deep Canyon Wash, Coachella Valley
244
Comment
RSA65259
Chorizanthe polygonoides var. longispina
F. W. Peirson
1922-5-19
3025
Riverside
3 miles northeast of Murrieta.
Comment
RSA65277
Chorizanthe xanti var. leucotheca
F. W. Peirson
1914-04
1776
Riverside
Whitewater, west end of Coachella Valley.
Comment
RSA65306
Eriogonum inflatum var. inflatum
F. W. Peirson
1914-1
1734
Riverside
Whitewater, N.W. Colorado Desert.
Comment
RSA65309
Eriogonum thurberi
F. W. Peirson
1922-5-19
4204
Riverside
5 miles northeast of Murrieta.
Comment
RSA65363
Atriplex canescens var. laciniata
F. W. Peirson
1924-12-30
s.n.
Riverside
Thousand Palms Canyon, Coachella Valley.
122
Comment
RSA65378
Atriplex polycarpa
F. W. Peirson
1927-11-25
s.n.
Riverside
Thousand-Palm Canyon, edge of Coachella Valley.
Comment
RSA65388
Atriplex hymenelytra
F. W. Peirson
1926-2-22
6502
Riverside
Thousand-Palms Canyon; Coachella Valley
Comment
RSA65390
Atriplex hymenelytra
F. W. Peirson
1924-12-30
5415
Riverside
Thousand-Palms Canyon, edge of Coachella Valley.
122
Comment
RSA65391
Atriplex hymenelytra
F. W. Peirson
1930-3-29
8694
Riverside
Painted Canyon, near Mecca, Colorado Desert.
Comment
RSA65411
Cistanthe ambigua
F. W. Peirson
1926-2-22
6512
Riverside
0.5 mile north of camp in Palm Grove, Thousand-Palm Canyon, Coachella Valley.
Comment
RSA65413
Cistanthe monandra
F. W. Peirson
1921-4-13
4317
Riverside
Foot of Deep Canyon, Coachella Valley
274
Comment
RSA65417
Cistanthe monandra
F. W. Peirson
1924-7-29
5028
Riverside
Banning to Idyllwild road, San Jacinto Mountains.
1570
Comment
RSA65432
Cistanthe ambigua
F. W. Peirson
1926-1-31
6485
Riverside
About a mile above station on Mecca Road, Dos Palmas. Colorado Desert.
Comment
RSA65578
Spergularia platensis
F. W. Peirson
1922-4-29
2926
Riverside
South of Lake Elsinore.
381
Comment
RSA65623
Opuntia ramosissima
F. W. Peirson
1928-4-24
7906
Riverside
Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert.
Comment
RSA65624
Cylindropuntia echinocarpa
F. W. Peirson
1928-4-24
7901
Riverside
Hills north and northeast of Cottonwood Springs, north end of Colorado Desert.
Comment
RSA65625
Elatine californica
F. W. Peirson
1922-5-21
4109
Riverside
Hemet Valley. [Hemet Valley = Garner Valley -SDW]
1338
Comment
RSA65628
Callitriche marginata
F. W. Peirson
1922-4-29
2943
Riverside
South of Lake Elsinore.
381
Comment
RSA65634
Achyronychia cooperi
F. W. Peirson
1922-4-8
1862
Riverside
Whitewater, head of Coachella Valley, Colorado Desert.
Comment
RSA65651
Eleocharis palustris
F. W. Peirson
1922-4-29
4167
Riverside
Dripping Spring, Temecula River, southwestern Riverside Co., California
457
Comment
RSA65658
Montia fontana
F. W. Peirson
1922-5-20
s.n.
Riverside
Hemet Valley. (San Jacinto Mountains)
1402
Comment
RSA65708
Silene antirrhina
F. W. Peirson
1919-4-14
5321
Riverside
Murray Canyon near Palm Springs
381
Comment
RSA65716
Loeflingia squarrosa
F. W. Peirson
1922-4-9
4156
Riverside
Palm Canyon Region, near Palm Springs.
Comment
RSA65720
Claytonia parviflora subsp. utahensis
F. W. Peirson
1921-3-22
2389
Riverside
Murray Canyon near Palm Springs.
457
Comment
RSA65796
Lepidium virginicum var. pubescens
F. W. Peirson
1922-5-21
3031
Riverside
Along east side of Hemet Valley
1357
Comment
RSA65823
Descurainia pinnata subsp. glabra
F. W. Peirson
1921-3-23
2592
Riverside
Deep Canyon, Coachella Valley.
Comment
RSA65882
Monolepis nuttalliana
F. W. Peirson
1918-03
1834
Riverside
Field near Indio.
Comment
RSA65895
Centrostegia thurberi
F. W. Peirson
1922-5-21
5343
Riverside
Hemet Valley, San Jacinto Mountains
1372
Comment
RSA65917
Polygonum ramosissimum
F. W. Peirson
1938-4-10
12379
Riverside
1-2 miles west of Blythe.
Comment
RSA65926
Eriogonum inflatum var. deflatum
F. W. Peirson
1924-12-30
5412
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
RSA65992
Eriogonum umbellatum subsp. munzii
F. W. Peirson
1924-7-28
5014
Riverside
Pine Flats Camp
1799
Comment
RSA66014
Eriogonum nudum var. pauciflorum
F. W. Peirson
1924-7-29
5035
Riverside
Banning to Idyllwild Rd.
1555
Comment
RSA66027
Eriogonum gracile var. gracile
F. W. Peirson
1922-12-26
3334
Riverside
Cabazon, W edge of Colorado Desert.
Comment Read comments Mar 13 2011
RSA66029
Eriogonum gracile var. gracile
F. W. Peirson
1924-7-29
5029
Riverside
Banning to Idyllwild road, San Jacinto Mountains.
1570
Comment
RSA66087
Tropidocarpum gracile
F. W. Peirson
1919-4-14
2811
Riverside
Murray Canyon, near Palm Springs.
Comment
RSA66148
Lepidium lasiocarpum
F. W. Peirson
1919-4-13
5328
Riverside
Tahquitz Creek near Palm Springs.
Comment
RSA66172
Draba cuneifolia var. integrifolia
F. W. Peirson
1919-4-14
649
Riverside
Murray Canyon, Palm Springs Region.
Comment
RSA66188
Romneya coulteri
F. W. Peirson
1920-6-22
2186
Riverside
Temescal Canyon.
305
Comment
RSA66236
Platystemon californicus
F. W. Peirson
1922-5-21
3033
Riverside
Along east side of Hemet Valley
1357
Comment
RSA66240
Platystemon californicus
F. W. Peirson
1922-4-28
5325
Riverside
Temescal Canyon, SW Riverside Co.
274
Comment
RSA66241
Platystemon californicus
F. W. Peirson
1922-4-29
2935
Riverside
South of Lake Elsinore.
381
Comment
RSA66252
Arabis johnstonii
F. W. Peirson
1922-5-21
3030
Riverside
Along east side of Hemet Valley
1357
Comment
RSA66258
Dendromecon rigida subsp. rigida
F. W. Peirson
1924-7-29
5025
Riverside
Road between Banning and Idyllwild.
1768
Comment
RSA66277
Eschscholzia parishii
F. W. Peirson
1922-4-9
2872
Riverside
Murray Canyon, Palm Springs region
305
Comment
RSA66302
Papaver californicum
F. W. Peirson
1918-03
1890
Riverside
Irrigated field near Indio.
Comment
RSA66307
Argemone munita subsp. munita
F. W. Peirson
1925-5-20
6015
Riverside
Burned area in chaparral, 1 mile northwest of Dripping Spring, W. Riverside Co.
457
Comment
RSA66494
Arabis perennans
F. W. Peirson
1933-4-15
10656
Riverside
Steep South slope of Whitewater Canyon, head of Coachella Valley.
701
Comment
RSA66508
Arabis perennans
F. W. Peirson
1922-4-10
2869
Riverside
Murray Canyon near Palm Springs.
610
Comment
RSA66528
Athysanus pusillus
F. W. Peirson
1921-3-22
2833
Riverside
Murray Canyon near Palm Springs.
457
Comment
RSA66544
Dithyrea californica
F. W. Peirson
1920-2-14
4178
Riverside
Whitewater Station, Colorado Desert
Comment
RSA66546
Dithyrea californica
F. W. Peirson
1926-1-31
6484
Riverside
Abundant on rocky slopes, Dos Palmas [Spring], Colorado Desert.
Comment
RSA66547
Dithyrea californica
F. W. Peirson
1914-04
1918
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA66561
Draba cuneifolia var. integrifolia
F. W. Peirson
1920-2-16
2326
Riverside
Palm Canyon Creek near Palm Springs.
Comment
RSA66564
Hymenolobus procumbens
F. W. Peirson
1922-4-30
1896
Riverside
Road from Temecula River to Hemet.
518
Comment
RSA66566
Hymenolobus procumbens
F. W. Peirson
1921-4-11
2398
Riverside
Murray Canyon. Palm Springs region.
Comment
RSA66574
Lepidium dictyotum var. acutidens
F. W. Peirson
1930-5-10
8771
Riverside
1 mile east of Perris
457
Comment
RSA66701
Arabis perennans
F. W. Peirson
1919-4-13
660
Riverside
Along the Tahquitz creek, East of Palm Springs, Riverside.
Comment
RSA66724
Galium stellatum
F. W. Peirson
1919-4-12
1191
Riverside
Along the Tahquitz Creek stream near Palm Springs
Comment
RSA66733
Lepidium lasiocarpum
F. W. Peirson
1920-2-15
2834
Riverside
Palm Springs, Tahquitz Camp.
Comment
RSA66743
Eschscholzia minutiflora
F. W. Peirson
1914-04
1886
Riverside
Whitewater, Nw corner of Colorado Desert, River Co.
Comment
RSA66744
Eschscholzia parishii
F. W. Peirson
1927-4-12
7167
Riverside
Painted canyon, near Mecca.
Comment
RSA66747
Eschscholzia minutiflora
F. W. Peirson
1921-3-20
4175
Riverside
Andreas Canyon near Palm Springs
213
Comment
RSA66762
Arabis pulchra
F. W. Peirson
1941-4-9
13077
Riverside
Open desert among shrubs; Pinto Basin road at junction with road to Cottonwood Springs.
Comment
RSA66770
Cleome isomeris
F. W. Peirson
1921-3-23
2382
Riverside
Rocky entrance to Deep Canyon. south side of Coachella Valley.
Comment
RSA66774
Cleome isomeris
F. W. Peirson
1921-3-19
1923
Riverside
Whitewater Grade near Cabazon, western edge of Colorado Desert.
Comment
RSA66779
Thysanocarpus curvipes var. curvipes
F. W. Peirson
1922-5-21
3017
Riverside
Hemet Valley. [Hemet Valley = Garner Valley -SDW]
1338
Comment
RSA66785
Thysanocarpus laciniatus
F. W. Peirson
1921-3-22
4187
Riverside
Murray Canyon, Near Palm Springs.
366
Comment
RSA66799
Arabis glaucovalvula
F. W. Peirson
1941-4-10
13078
Riverside
White Tank Region at summit of grade S of 29 Palms.
Comment
RSA66803
Streptanthella longirostris
F. W. Peirson
1918-03
668
Riverside
Field near Indio.
Comment
RSA66806
Streptanthella longirostris
F. W. Peirson
1920-2-14
5332
Riverside
Whitewater Station, Colorado Desert
Comment
RSA66809
Streptanthella longirostris
F. W. Peirson
1919-4-15
667
Riverside
Whitewater Grade above Cabazon, San Gorgonio Pass.
Comment Read comments Mar 13 2011
RSA67108
Myosurus minimus var. filiformis
F. W. Peirson
1922-5-20
3035
Riverside
Hemet Valley, San Jacinto Mts.
1387
Comment
RSA67109
Myosurus minimus subsp. apus
F. W. Peirson
1922-4-29
2945
Riverside
South of Lake Elsinore.
381
Comment
RSA67110
Myosurus minimus subsp. apus
F. W. Peirson
1922-5-19
4171
Riverside
Menifee Valley
Comment
RSA67347
Lepidium nitidum
F. W. Peirson
1918-03
2327
Riverside
Whitewater Grade, NW corner of Colorado Desert.
Comment
RSA67363
Lepidium fremontii
F. W. Peirson
1928-4-24
7902
Riverside
Cottonwood Springs, northern Colorado Desert
Comment
RSA67365
Guillenia lasiophylla
F. W. Peirson
1922-4-9
2918
Riverside
Andreas Canyon near Palm Springs, Coachella Valley.
671
Comment
RSA67370
Guillenia lasiophylla
F. W. Peirson
1919-4-13
661
Riverside
Along Tahquitz Canyon stream, SE of Palm Springs.
Comment
RSA68339
Lepidium lasiocarpum
F. W. Peirson
1933-4-13
10636
Riverside
Road from Deep Canyon to Idyllwild.
610
Comment
RSA68342
Lepidium lasiocarpum
F. W. Peirson
1916-04
679
Riverside
Near Palm Springs.
Comment
RSA68622
Calochortus weedii var. weedii
Frank W. Peirson
1920-6-22
2180
Riverside
Grade south of Temecula River, going toward Dripping Spring
427
Comment
RSA68632
Calochortus splendens
Frank W. Peirson
1924-7-27
4997
Riverside
Deer Springs, San Jacinto Mountains.
Comment Read comments May 26 2014
RSA68692
Muilla maritima
F. W. Peirson
1922-4-29
2942
Riverside
2 miles south of Elsinore.
366
Comment
RSA68694
Muilla maritima
F. W. Peirson
1922-5-20
3046
Riverside
Hemet Valley. (San Jacinto Mountains)
1402
Comment
RSA68710
Lilium parryi
Frank W. Peirson
1924-7-27
5003
Riverside
South side of Dark Canyon, San Jacinto Mountains.
2499
Comment
RSA68718
Hesperocallis undulata
Frank W. Peirson
1927-4-13
7178
Riverside
Canyon near east end of Santa Rosa Mountains, 8 miles from boulevard; desert near Mecca.
Comment Read comments Nov 13 2011
RSA68780
Delphinium parishii
F. W. Peirson
1928-4-24
7897
Riverside
Cottonwood Springs, northern Colorado Desert
Comment
RSA68981
Plantago ovata var. fastigiata
F. W. Peirson
1926-2-22
6510
Riverside
Thousand-Palms Canyon; Coachella Valley
Comment
RSA68986
Plantago ovata var. fastigiata
F. W. Peirson
1930-3-29
8693
Riverside
Painted canyon, near Mecca.
Comment
RSA68989
Plantago ovata var. fastigiata
F. W. Peirson
1914-04
s.n.
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA69040
Dodecatheon redolens
F. W. Peirson
1924-7-27
4999
Riverside
Deer Springs, San Jacinto Mtns.
2668
Comment
RSA69241
Pterospora andromedea
F. W. Peirson
1924-7-27
4987
Riverside
Dark Canyon, San Jacinto Mts.
1905
Comment
RSA69269
Chimaphila menziesii
F. W. Peirson
1924-7-27
4986
Riverside
Dark Canyon, San Jacinto Mts.
1905
Comment
RSA69271
Chimaphila umbellata subsp. occidentalis
F. W. Peirson
1924-7-27
5004
Riverside
about 1 mile west of Deer Springs, San Jacinto Mts.
2439
Comment
RSA69330A
Rhododendron occidentale var. californicum
F. W. Peirson
843
Riverside
Fruiting specimen from San Jacinto Mtns.
Comment
RSA69412
Delphinium parryi
F. W. Peirson
1922-5-18
3051
Riverside
Lake Elsinore, Riverside Co.
Comment
RSA69414
Delphinium parryi
F. W. Peirson
1929-5-4
8337
Riverside
Mostly about bushes on low hill about 2 miles south of summit of St. Johns Grade south of Hemet.
701
Comment
RSA69419
Eustoma exaltatum
F. W. Peirson
1919-4-14
879
Riverside
Palm Canyon, near Palm Springs
Comment
RSA69420
Eustoma exaltatum
F. W. Peirson
1924-12-30
5419
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
RSA69435
Frasera parryi
F. W. Peirson
1924-6-28
5008
Riverside
Pine flats Camp, San Jacinto Mts.
1799
Comment
RSA69461
Mirabilis laevis var. retrorsa
F. W. Peirson
1928-3-10
7701
Riverside
Snow Creek Auto Camp at Whitewater.
Comment
RSA69464
Mirabilis laevis var. crassifolia
F. W. Peirson
1921-3-19
69464
Riverside
Cabazon, San Gorgonio Pass.
Comment Read comments Mar 13 2011
RSA69472
Mirabilis tenuiloba
F. W. Peirson
1922-4-11
2917
Riverside
Deep Canyon Wash, Colorado Desert.
274
Comment
RSA69479
Luzula comosa
F. W. Peirson
1922-5-19
3039
Riverside
San Jacinto River.
1143
Comment
RSA69561
Mentzelia jonesii
F. W. Peirson
1928-4-24
7909
Riverside
Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert.
Comment
RSA69581
Mentzelia involucrata var. megalantha
F. W. Peirson
1933-4-15
10652
Riverside
Whitewater River, 4.5 miles above the bridge.
701
Comment
RSA69582
Mentzelia involucrata
F. W. Peirson
1922-4-9
753
Riverside
Palm Canyon stream near Alkali Canyon, Riverside County
Comment
RSA69584
Mentzelia involucrata var. megalantha
F. W. Peirson
1926-1-31
6494
Riverside
Dos Palmas [Spring], Colorado Desert.
Comment
RSA69585
Mentzelia involucrata
F. W. Peirson
1933-4-13
10637
Riverside
Road from Deep Canyon to Idyllwild.
610
Comment
RSA69608
Boerhavia coccinea
F. W. Peirson
1922-12-28
5218
Riverside
Andreas Canyon, east base of San Jacinto Mts.
244
Comment
RSA69609
Boerhavia coccinea
F. W. Peirson
1916-04
1848
Riverside
Near Palm Springs.
Comment
RSA69621
Juncus acutus subsp. leopoldii
F. W. Peirson
1921-3-20
2366
Riverside
Palm Canyon, east base of San Jacinto Mountains
305
Comment
RSA69622
Juncus acutus subsp. leopoldii
F. W. Peirson
1924-12-30
5409
Riverside
Thousand-Palms Canyon, north side of Coachella Valley.
122
Comment
RSA69630
Juncus mexicanus
F. W. Peirson
1924-6-1
4676
Riverside
River lands along Santa Ana River.
152
Comment
RSA69660
Juncus macrophyllus
F. W. Peirson
1924-7-28
5011
Riverside
Pine Flats Camp
1799
Comment
RSA69673
Juncus bufonius
F. W. Peirson
1922-4-29
5353
Riverside
South of Lake Elsinore.
381
Comment
RSA69674
Juncus bufonius
F. W. Peirson
1919-4-14
2845
Riverside
Murray Canyon, near Palm Springs.
Comment
RSA69679
Allenrolfea occidentalis
F. W. Peirson
1926-1-31
6487
Riverside
Dos Palmas, Colorado Desert.
Comment
RSA69690
Mentzelia desertorum
F. W. Peirson
1922-4-12
751
Riverside
along boulevard, 18 mi. southeast of Coachella.
Comment
RSA69725
Lemna gibba
F. W. Peirson
1922-5-19
3018
Riverside
Hemet Valley, San Jacinto Mountains.
1341
Comment
RSA69842
Juncus cooperi
F. W. Peirson
1933-4-12
10634
Riverside
Dos Palmas, northern Colorado desert
30
Comment
RSA69882
Forestiera pubescens
F. W. Peirson
1933-4-13
10647
Riverside
Between Deep Canyon and Idyllwild, at Palm Canyon crossing
1387
Comment Read comments Oct 31 2011
RSA69885
Forestiera pubescens
F. W. Peirson
1922-5-21
3044
Riverside
Hemet Valley, San Jacinto Mts
1372
Comment
RSA69914
Asclepias subulata
F. W. Peirson
1920-12-29
2339
Riverside
Point of Rocks, 1.5 miles east of Whitewater Station, head of Coachella Valley
335
Comment
RSA69915
Asclepias subulata
F. W. Peirson
1928-4-23
7886
Riverside
in sandy wash land; 6 mi. n.e. of Mecca, on road to Blythe
Comment Read comments Oct 23 2011
RSA69916
Asclepias subulata
F. W. Peirson
1935-4-17
11476
Riverside
30 miles north of Blythe.
Comment
RSA69917
Asclepias subulata
F. W. Peirson
1924-12-30
5420
Riverside
Near mouth of Thousand Palms Canyon, Coachella Valley
91
Comment
RSA69958
Abronia villosa var. aurita
F. W. Peirson
1922-4-21
3340
Riverside
Hemet Valley
1357
Comment
RSA69968
Abronia villosa
F. W. Peirson
1918-03
2222
Riverside
Irrigated field near Indio.
Comment
RSA69991
Allionia incarnata
F. W. Peirson
1919-4-13
1849
Riverside
Tahquitz Canyon stream, near Palm Springs.
Comment
RSA69992
Allionia incarnata
F. W. Peirson
1922-12-28
5221
Riverside
Andreas Canyon near Palm Springs
Comment
RSA70002
Tidestromia oblongifolia
F. W. Peirson
1939-11-25
s.n.
Riverside
Foot of mountain near Painted Canyon.
Comment
RSA70003
Tidestromia oblongifolia
F. W. Peirson
1937-11-27
12319
Riverside
La Quinta, Coachella Valley. At sea-level.
0
Comment
RSA70006
Tidestromia oblongifolia subsp. oblongifolia
F. W. Peirson
1924-12-30
5416
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
RSA70007
Tidestromia oblongifolia
F. W. Peirson
1928-11-30
8211
Riverside
Foot canyon below Shavers Well, NE of Mecca.
Comment
RSA70039
Arthrocnemum subterminale
F. W. Peirson
1922-5-19
3068
Riverside
2 miles southeast of Perris
Comment
RSA70053
Epipactis gigantea
Frank W. Peirson
1924-7-27
4984
Riverside
Dark Canyon, San Jacinto Mountains.
1799
Comment
RSA70054
Juncus rugulosus
F. W. Peirson
1924-7-28
5010
Riverside
Pine Flats Camp
1799
Comment
RSA70059
Juncus bufonius var. occidentalis
F. W. Peirson
1922-5-19
3019
Riverside
Menifee Valley, south of Perris.
457
Comment
RSA70062
Juncus rugulosus
F. W. Peirson
1920-12-29
2337
Riverside
Andreas Canyon, Palm Springs Regon.
259
Comment
RSA70095
Juncus bufonius var. occidentalis
F. W. Peirson
1922-4-29
2928
Riverside
South of Lake Elsinore.
381
Comment
RSA70124
Dichelostemma capitatum subsp. pauciflorum
F. W. Peirson
1921-3-22
s.n.
Riverside
Murray Canyon, Near Palm Springs.
366
Comment
RSA70127
Brodiaea filifolia
F. W. Peirson
1922-5-19
3070
Riverside
2 miles southeast of Perris
Comment
RSA70160
Dichelostemma capitatum subsp. pauciflorum
F. W. Peirson
1922-4-9
2903
Riverside
Andreas Canyon near Palm Springs, Colorado Desert,
335
Comment
RSA70166
Brodiaea filifolia
F. W. Peirson
1930-5-10
8772
Riverside
1 mile east of Perris
457
Comment Read comments Nov 15 2007
RSA70180
Allium munzii
F. W. Peirson
1922-4-28
2961
Riverside
Temescal Canyon, western Riverside Co..
320
Comment
RSA70185
Yucca schidigera
Frank W. Peirson
1921-3-19
2388
Riverside
2 miles east of Cabazon.
Comment Read comments Mar 13 2011
RSA70189
Allium parishii
F. W. Peirson
1928-4-25
7918
Riverside
Western edge of broken country northwest of Cottonwood Springs, southern Mojave Desert.
Comment
RSA70222
Allium haematochiton
F. W. Peirson
1921-3-19
2394
Riverside
4 miles west of Beaumont, on road to Redlands.
Comment
RSA70224
Allium haematochiton
F. W. Peirson
1919-4-14
1652
Riverside
Murray Canyon, Palm Springs Region.
457
Comment
RSA70237
Allium peninsulare var. peninsulare
F. W. Peirson
1933-4-15
10649
Riverside
Whitewater Canyon, 4.5 miles above bridge at head of Coachella Valley.
701
Comment
RSA70238
Allium peninsulare
F. W. Peirson
1930-5-10
8773
Riverside
St. Johns Grade. south of Hemet
610
Comment
RSA70334
Asclepias californica
F. W. Peirson
1922-4-29
4255
Riverside
Leach Canyon. ( base of Santa Ana Mts., near Elsinore)
534
Comment
RSA70346
Funastrum cynanchoides var. hartwegii
F. W. Peirson
1925-5-20
6010
Riverside
Aguanga.
610
Comment
RSA70347
Funastrum hirtellum
F. W. Peirson
1927-4-12
7160
Riverside
Painted Canyon, near Mecca
Comment
RSA70349
Funastrum cynanchoides var. hartwegii
F. W. Peirson
1916-04
888
Riverside
Near Palm Springs.
Comment
RSA70350
Funastrum hirtellum
F. W. Peirson
1922-4-9
4118
Riverside
Palm Canyon Region, near Palm Springs.
Comment
RSA70351
Funastrum cynanchoides var. hartwegii
F. W. Peirson
1921-3-20
4119
Riverside
Palm Canyon near Palm Springs
Comment
RSA70375
Dichelostemma capitatum subsp. pauciflorum
F. W. Peirson
1919-4-12
s.n.
Riverside
Tahquitz canyon near Palm Springs.
Comment
RSA70377
Euphorbia palmeri
F. W. Peirson
1922-5-21
4257
Riverside
Southeast of Keene camp. San Jacinto mtns,
1463
Comment
RSA70386
Euphorbia polycarpa var. hirtella
F. W. Peirson
1920-12-28
2040
Riverside
Wash coming down from the east; lower part of Palm Canyon.
Comment
RSA70387
Euphorbia polycarpa var. hirtella
F. W. Peirson
1924-12-30
5418
Riverside
Abundant in dry desert sands; Thousand Palms Canyon.
122
Comment
RSA70388
Euphorbia polycarpa var. hirtella
F. W. Peirson
1930-3-29
8689
Riverside
Painted canyon, near Mecca.
Comment
RSA70391
Euphorbia polycarpa var. hirtella
F. W. Peirson
1928-4-24
7910 a
Riverside
Below Cottonwood Spring, northern edge of Colorado Desert.
Comment
RSA70392
Chamaesyce setiloba
F. W. Peirson
1928-4-24
7910
Riverside
Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert.
Comment
RSA70413
Arctostaphylos pungens
F. W. Peirson
1922-5-20
4465
Riverside
Hemet Valley, San Jacinto Mts.
1494
Comment Read comments Mar 16 2007
RSA70426
Ditaxis lanceolata
F. W. Peirson
1927-4-12
7169
Riverside
In Painted Canyon near Mecca.
Comment
RSA70427
Ditaxis lanceolata
F. W. Peirson
1921-3-23
2805
Riverside
Deep Canyon Wash, 12 miles southeast of Palm Springs.
152
Comment
RSA70429
Ditaxis lanceolata
F. W. Peirson
1914-04
2042
Riverside
Whitewater, Nw corner of Colorado Desert, River Co.
Comment
RSA70430
Ditaxis serrata
F. W. Peirson
1932-12-28
s.n.
Riverside
Andreas Canyon, near Palm Springs
244
Comment
RSA70431
Ditaxis californica
F. W. Peirson
1921-3-23
2043
Riverside
Deep Canyon Wash, 12 miles southeast of Palm Springs.
152
Comment
RSA70433
Bernardia incana
F. W. Peirson
1928-4-25
7917
Riverside
Cottonwood Spring Region, Northern Colorado Desert.
Comment
RSA70462
Allium cratericola
F. W. Peirson
1922-5-21
3069
Riverside
Near Garner Ranch, Hemet Valley, San Jacinto Mountains
1372
Comment
RSA70499
Geranium carolinianum
F. W. Peirson
1922-4-10
2859
Riverside
Murray Canyon, near Palm Springs.
305
Comment
RSA70546
Chamaesyce arizonica
F. W. Peirson
1922-12-28
4256
Riverside
Andreas Canyon near Palm Springs
Comment
RSA70554
Croton californicus var. mohavensis
F. W. Peirson
1920-2-14
s.n.
Riverside
Whitewater Station, Colorado Desert
Comment
RSA70555
Croton californicus
F. W. Peirson
1932-11-26
9661
Riverside
Thousand Palms.
122
Comment
RSA70558
Croton californicus
F. W. Peirson
1920-12-29
4439
Riverside
1.5 miles east of Whitewater Station, head of Coachella Valley.
Comment
RSA70608
Agave deserti subsp. deserti
Frank W. Peirson
1921-4-13
2290
Riverside
Deep Canyon; north base of Santa Rosa Mountains, Riverside.
335
Comment
RSA70823
Arctostaphylos parryana subsp. desertica
F. W. Peirson
1921-3-21
2577
Riverside
Gordon Trail from Andreas Canyon, east base of San Jacinto Mts.
1829
Comment
RSA70867
Arctostaphylos pringlei subsp. drupacea
F. W. Peirson
1921-3-21
2386
Riverside
Gordon Trail from Andreas Canyon, east base of San Jacinto Mts.
1829
Comment
RSA70996
Cuscuta californica
F. W. Peirson
1914-04
898
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA70999
Cuscuta umbellata
F. W. Peirson
1932-11-26
9659
Riverside
Thousand Palms
Comment
RSA71003
Cuscuta ceanothi
F. W. Peirson
1924-7-29
5036
Riverside
Banning to Idyllwild Rd.
1555
Comment
RSA71009
Cuscuta salina
F. W. Peirson
1924-6-21
4760
Riverside
Along south end of Lake Elsinore
381
Comment
RSA71010
Cuscuta californica
F. W. Peirson
1921-4-13
2399
Riverside
Deep Canyon; north base of Santa Rosa Mountains, Riverside.
152
Comment
RSA71017
Cressa truxillensis
F. W. Peirson
1922-5-21
4254
Riverside
near foot of Jack Rabbit Grade. (south of Moreno)
427
Comment Read comments Mar 20 2011
RSA71798
Gilia capitata subsp. abrotanifolia
F. W. Peirson
1924-7-29
5034
Riverside
Banning to Idyllwild road, San Jacinto Mountains.
1570
Comment
RSA71802
Gilia stellata
F. W. Peirson
1933-4-16
10640
Riverside
Deep Canyon to Idyllwild road
1067
Comment
RSA71807
Gilia stellata
F. W. Peirson
1920-2-16
2297
Riverside
Foot of Alkali Canyon, southeast of Palm Canyon, east base of San Jacintos Mountains
Comment
RSA71813
Saltugilia australis
F. W. Peirson
1920-2-16
2296
Riverside
Andreas Canyon, San Jacinto Mts.
274
Comment Read comments Oct 2 2011
RSA71926
Aliciella latifolia
F. W. Peirson
1927-4-12
7168
Riverside
Painted canyon, near Mecca.
Comment
RSA71927
Aliciella latifolia
F. W. Peirson
1926-1-31
6498
Riverside
Dos Palmas Spring, NE of Mecca
Comment
RSA71928
Aliciella latifolia
F. W. Peirson
1921-3-22
2385
Riverside
Andreas Canyon, Palm Springs region
Comment
RSA71929
Aliciella latifolia
F. W. Peirson
1922-4-11
2871
Riverside
Deep Canyon Region, north base of Santa Rosa Mountains
Comment
RSA71998
Phlox austromontana
F. W. Peirson
1922-5-20
908
Riverside
Hemet Valley, San Jacinto Mountains.
1371
Comment
RSA72090
Epilobium canum subsp. latifolium
F. W. Peirson
1924-7-29
5027
Riverside
Open Mountain slope on road from Banning to Idyllwild, San Jacinto Mountains.
1677
Comment
RSA72096
Epilobium canum subsp. latifolium
F. W. Peirson
1922-12-27
336
Riverside
Andreas Canyon, near Palm Springs.
Comment
RSA72167
Epilobium ciliatum subsp. ciliatum
F. W. Peirson
1924-7-28
5012
Riverside
Pine Flats Camp
1799
Comment
RSA72193
Oenothera californica subsp. californica
F. W. Peirson
1914-04
387
Riverside
Beaumont, San Gorgonio Pass.
Comment
RSA72201
Camissonia pallida subsp. hallii
F. W. Peirson
1914-04
791
Riverside
Whitewater east of Beaumont.
Comment
RSA72237
Camissonia claviformis subsp. aurantiaca
F. W. Peirson
1920-2-16
2707
Riverside
Palm Canyon stream below the canyon, Palm Springs. region
Comment
RSA72245
Camissonia claviformis subsp. aurantiaca
F. W. Peirson
1914-04
785
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA72286
Gilia angelensis
F. W. Peirson
1923-3-28
4129
Riverside
North of Lake Elsinore near Brickyard.
Comment
RSA72287
Gilia angelensis
F. W. Peirson
1929-5-4
8334
Riverside
Summit of St John's grade.
792
Comment
RSA72288
Gilia angelensis
F. W. Peirson
1922-5-19
4130
Riverside
5 miles northeast of Murrieta on road to Menifee Valley.
427
Comment
RSA72315
Gilia diegensis
F. W. Peirson
1922-5-21
4137
Riverside
Along east side of Hemet Valley
1357
Comment
RSA72319
Gilia diegensis
F. W. Peirson
1917-4-1
925
Riverside
Along south edge of Colorado Desert embayment east of Palm Springs, above ''Garden of Eden'.
Comment
RSA72330
Epilobium canum subsp. latifolium
F. W. Peirson
1928-11-30
8212
Riverside
Cottonwood Spring, northern Colorado Desert.
Comment Read comments Oct 9 2010
RSA73013
Leptosiphon lemmonii
F. W. Peirson
1919-4-15
943
Riverside
Whitewater Grade east of Banning
610
Comment
RSA73047
Leptosiphon androsaceus
F. W. Peirson
1922-4-28
4472
Riverside
Leach Canyon, near Elsinore
534
Comment
RSA73056
Leptosiphon lemmonii
F. W. Peirson
1922-4-28
2931
Riverside
Temescal Canyon.
335
Comment
RSA73057
Leptosiphon lemmonii
F. W. Peirson
1938-5-30
12414
Riverside
Thomas Mountain, Hemet Valley.
1402
Comment
RSA73075
Leptosiphon liniflorus
F. W. Peirson
1924-7-2
5032
Riverside
Banning to Idyllwild road.
1570
Comment Read comments Nov 17 2011
RSA73087
Linanthus dianthiflorus subsp. dianthiflorus
F. W. Peirson
1922-5-20
4471
Riverside
Hemet Valley, San Jacinto Mountains.
1371
Comment
RSA73089
Linanthus dianthiflorus subsp. dianthiflorus
F. W. Peirson
1922-4-30
2930
Riverside
St. John's Grade, Baustista Creek, south of Hemet.
762
Comment
RSA73148
Navarretia fossalis
F. W. Peirson
1922-5-19
4242
Riverside
5 miles northeast of Murrieta on road to Perris
Comment
RSA73330
Clarkia epilobioides
F. W. Peirson
1919-4-14
4457
Riverside
Murray Canyon, Palm Springs Region.
457
Comment
RSA73679
Leptosiphon floribundus
F. W. Peirson
1922-4-28
946
Riverside
Leach Canyon Near Lake Elsinore.
549
Comment
RSA73683
Linanthus aureus
F. W. Peirson
1928-4-23
7887
Riverside
2.5 miles below cottonwood Springs, Riverside County
Comment
RSA74148
Phacelia distans
F. W. Peirson
1922-4-9
956
Riverside
Lower part of Murray Canyon, near Palm Springs
Comment
RSA74172
Phacelia ambigua
F. W. Peirson
1920-2-16
971
Riverside
Palm Canyon Stream, Near foot of Alkali Canyon east of Palm Canyon, Riverside County.
Comment
RSA74175
Phacelia ambigua
F. W. Peirson
1922-4-9
4126
Riverside
Palm Canyon Region, near Palm Springs.
Comment
RSA74497
Phacelia campanularia subsp. vasiformis
F. W. Peirson
1928-4-24
7896
Riverside
Below Cottonwood Spring, northern edge of Colorado Desert.
Comment
RSA74706
Phacelia rotundifolia
F. W. Peirson
1919-4-13
4125
Riverside
Alkali Canyon, eastward from Palm Canyon; Colorado Desert.
Comment
RSA74713
Nama demissa var. deserti
F. W. Peirson
1920-2-15
2315
Riverside
Palm Springs, Tahquitz Camp.
Comment
RSA74715
Nama demissa var. deserti
F. W. Peirson
1926-1-31
6483
Riverside
Dos Palmas [Spring], Colorado Desert.
Comment
RSA74790
Phacelia campanularia
F. W. Peirson
1926-2-22
6499
Riverside
On talus slope east of bridge over Whitewater River, head of Coachella Valley
Comment
RSA74791
Phacelia campanularia
F. W. Peirson
1917-4-1
4123
Riverside
Palm Springs
Comment
RSA74795
Phacelia pedicellata
F. W. Peirson
1920-2-16
970
Riverside
Palm Canyon Stream, Near foot of Alkali Canyon east of Palm Canyon, Riverside County.
Comment
RSA74836
Phacelia suaveolens subsp. keckii
F. W. Peirson
1931-5-30
9378
Riverside
Trail from Glen Ivy to Santiago Peak
1372
Comment
RSA74932
Phacelia distans
F. W. Peirson
1928-4-24
7903
Riverside
Cottonwood Springs, northern Colorado Desert
Comment
RSA74949
Phacelia distans
F. W. Peirson
1918-03
957
Riverside
Field near Indio.
Comment
RSA74951
Phacelia distans
F. W. Peirson
1927-4-12
7163
Riverside
Painted canyon, near Mecca.
Comment
RSA74954
Phacelia distans
F. W. Peirson
1918-03
955
Riverside
Cabazon, San Gorgonio Pass.
Comment Read comments Mar 13 2011
RSA75124
Nemacladus sigmoideus
F. W. Peirson
1928-4-24
7913
Riverside
Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert.
Comment
RSA75132A
Nemacladus tenuis var. tenuis
F. W. Peirson
1920-2-16
4681
Riverside
Palm Canyon, near below Palm Springs
Comment
RSA75132B
Nemacladus glanduliferus
F. W. Peirson
1920-2-16
4681
Riverside
Palm Canyon, near below Palm Springs
Comment
RSA75139
Nemacladus rubescens
F. W. Peirson
1926-1-31
6486
Riverside
About 2 miles from Dos Palmas on road to Mecca, Colorado Desert.
Comment
RSA75141
Nemacladus rubescens
F. W. Peirson
1928-4-24
7914
Riverside
Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert.
Comment
RSA75369
Camissonia brevipes subsp. brevipes
F. W. Peirson
1928-7-10
7706
Riverside
Colorado Desert. Foot of rock wall of canyon at Hidden Spring, northeast of Mecca.
Comment
RSA75371
Camissonia brevipes subsp. brevipes
F. W. Peirson
1930-3-29
8686
Riverside
Colorado Desert. Painted Canyon, near Mecca.
Comment
RSA75387
Camissonia cardiophylla
F. W. Peirson
1930-3-29
8687
Riverside
Painted canyon, near Mecca.
Comment
RSA75388
Camissonia cardiophylla
F. W. Peirson
1917-4-1
787
Riverside
Along south edge of Colorado Desert embayment east of Palm Springs, above ''Garden of Eden'.
Comment
RSA75398
Camissonia boothii subsp. condensata
F. W. Peirson
1920-2-16
784
Riverside
Colorado Desert. Garden of Eden east of Palm Springs.
Comment
RSA75404
Camissonia boothii subsp. condensata
F. W. Peirson
1922-4-9
s.n.
Riverside
Palm Canyon Region, near Palm Springs.
Comment
RSA75413
Oenothera deltoides subsp. deltoides
F. W. Peirson
1918-03
779
Riverside
Irrigated field near Indio.
Comment
RSA75419
Oenothera deltoides subsp. deltoides
F. W. Peirson
1922-4-6
782
Riverside
Near the White Water Bridge, head of Coachella Valley.
Comment
RSA75431
Camissonia pallida subsp. pallida
F. W. Peirson
1919-4-13
4699
Riverside
Tahquitz Canyon, near Palm Springs.
Comment Read comments Sep 18 2011
RSA75432
Camissonia hirtella
F. W. Peirson
1924-7-29
5022
Riverside
Road between Banning and Idyllwild.
1768
Comment
RSA75435
Camissonia pallida subsp. pallida
F. W. Peirson
1919-4-13
786
Riverside
Tahquitz Canyon stream, near Palm Springs.
Comment
RSA75503
Phacelia brachyloba
F. W. Peirson
1924-7-29
5021
Riverside
Road between Banning and Idyllwild.
1768
Comment
RSA75520
Tricardia watsonii
F. W. Peirson
1914-04
1715
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA75687
Camissonia refracta
F. W. Peirson
1926-1-31
6492
Riverside
Dos Palmas [Spring], Colorado Desert.
Comment
RSA75874
Nemophila menziesii
F. W. Peirson
1929-5-4
8336
Riverside
In open spaces along road, summit of St. John s Grade, south of Hemet.
793
Comment
RSA75988
Eucrypta chrysanthemifolia var. bipinnatifida
F. W. Peirson
1919-4-13
972
Riverside
Tahquitz Canyon, near Palm Springs.
Comment Read comments Sep 18 2011
RSA76031
Pholistoma membranaceum
F. W. Peirson
1919-4-13
981
Riverside
Tahquitz Canyon stream, near Palm Springs.
Comment
RSA76032
Pholistoma membranaceum
F. W. Peirson
1918-03
5304
Riverside
Whitewater Grad, E of Beaumont.
Comment Read comments Feb 3 2013
RSA76033B
Simmondsia chinensis
F. W. Peirson
1920-6-23
2806
Riverside
Aguanga.
610
Comment
RSA766144
Eriogonum thomasii
F. W. Peirson
1930-3-29
1897
Riverside
Painted Canyon
Comment
RSA76931
Euonymus occidentalis var. parishii
F. W. Peirson
1924-7-27
4983
Riverside
Dark Canyon, San Jacinto Mts.
1768
Comment
RSA76934
Simmondsia chinensis
F. W. Peirson
1919-4-13
2049
Riverside
Murray Canyon, Palm Springs Region.
457
Comment
RSA76937
Simmondsia chinensis
F. W. Peirson
1920-12-29
8415
Riverside
Point of Rocks, 1.5 miles east of Whitewater Station, head of Coachella Valley
335
Comment
RSA76945
Rhus trilobata var. pilosissima
F. W. Peirson
1928-3-24
7727
Riverside
Large clumps along road up Temecula River, just north of Dripping Spring.
457
Comment
RSA76953
Tetracoccus hallii
F. W. Peirson
1928-4-24
7894
Riverside
Cottonwood Springs, northern Colorado Desert
Comment
RSA76955
Stillingia linearifolia
F. W. Peirson
1914-04
2045
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA76957
Stillingia linearifolia
F. W. Peirson
1921-4-12
5311
Riverside
Foot of Palm canyon.
Comment
RSA76960
Stillingia spinulosa
F. W. Peirson
1921-4-12
2044
Riverside
Near Indian Wells.
Comment
RSA76961
Stillingia spinulosa
F. W. Peirson
1924-12-29
5403
Riverside
Sand hill near Palm Springs RR Station.
Comment
RSA76967
Ziziphus parryi
F. W. Peirson
1921-3-21
2370
Riverside
Gordon Trail from Andreas Canyon, east base of the San Jacinto Mtns.
1067
Comment
RSA76968
Ziziphus parryi
F. W. Peirson
1922-4-9
2870
Riverside
Andreas Canyon, Palm Springs Region.
366
Comment
RSA77059
Loeseliastrum schottii
F. W. Peirson
1914-04
953
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA77060
Loeseliastrum schottii
F. W. Peirson
1926-2-22
6506
Riverside
Thousand-Palms Canyon.
152
Comment
RSA77071
Langloisia setosissima subsp. setosissima
F. W. Peirson
1921-4-11
4475
Riverside
Deep Canyon Wash, south side of Coachella Valley
244
Comment
RSA77073
Langloisia setosissima subsp. setosissima
F. W. Peirson
1926-2-22
6605
Riverside
Thousand-Palms Canyon; Coachella Valley
Comment
RSA77075
Langloisia setosissima subsp. setosissima
F. W. Peirson
1927-4-12
7177
Riverside
Painted Canyon, near Mecca. Central part of Painted Canyon
Comment
RSA77076
Langloisia setosissima subsp. setosissima
F. W. Peirson
1935-4-17
s.n.
Riverside
30 miles north of Blythe.
Comment
RSA77086
Thamnosma montana
F. W. Peirson
1918-03
2032
Riverside
Whitewater at head of Coachella Valley.
Comment Read comments Jan 14 2010
RSA77146
Ceanothus greggii var. perplexans
F. W. Peirson
1918-03
728
Riverside
Jack Rabbit Grade, from Moreno to Beaumont
Comment Read comments Mar 20 2011
RSA77158
Ceanothus leucodermis
F. W. Peirson
1914-04
730
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA77195
Eremalche rotundifolia
F. W. Peirson
1921-04
2384
Riverside
Deep Canyon Wash, south of Indio
Comment
RSA77199
Eremalche exilis
F. W. Peirson
1914-04
2300
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA77201
Eremalche exilis
F. W. Peirson
1917-4-1
2053
Riverside
Andreas Canyon near Palm Springs.
Comment
RSA77211
Calochortus weedii var. weedii
Frank W. Peirson
1920-6-22
2189
Riverside
Dripping Spring southeast of Temecula
457
Comment
RSA77214
Sphaeralcea ambigua subsp. rosacea
F. W. Peirson
1933-4-13
10639
Riverside
on road from Deep Canyon to Idyllwild, San Jacinto Mts.
762
Comment
RSA77216
Sphaeralcea ambigua subsp. rosacea
F. W. Peirson
1916-04
2067
Riverside
Near Palm Springs.
Comment
RSA77217
Sphaeralcea ambigua subsp. rosacea
F. W. Peirson
1922-4-9
2887
Riverside
Palm Canyon Region, near Palm Springs.
Comment
RSA77226
Ayenia compacta
F. W. Peirson
1922-4-9
9600
Riverside
Andreas Canyon, Palm Springs region
457
Comment
RSA77228
Ayenia compacta
F. W. Peirson
1919-4-14
2069
Riverside
Murray Canyon, near Palm Springs.
Comment
RSA77237
Eriodictyon crassifolium
F. W. Peirson
1922-4-28
4480
Riverside
Leach Canyon, near Elsinore
534
Comment
RSA77238
Eriodictyon crassifolium
F. W. Peirson
1921-3-22
990
Riverside
Murray Canyon, Near Palm Springs.
366
Comment
RSA77341
Ceanothus tomentosus var. olivaceus
F. W. Peirson
1922-4-30
2941
Riverside
St. John's Grade, Baustista Creek, south of Hemet.
762
Comment
RSA77414
Brandegea bigelovii
F. W. Peirson
1921-3-23
2387
Riverside
Deep Canyon Wash, 12 miles southeast of Palm Springs.
152
Comment
RSA77415
Brandegea bigelovii
F. W. Peirson
1927-4-12
7166
Riverside
In Painted Canyon near Mecca.
Comment
RSA77418
Cucurbita palmata
F. W. Peirson
1916-04
1206
Riverside
Near Palm Springs.
Comment
RSA77426
Petalonyx linearis
F. W. Peirson
1921-3-23
2376
Riverside
Deep Canyon south of Coachella Valley
335
Comment
RSA77438
Angelica tomentosa
F. W. Peirson
1924-7-29
5024
Riverside
Open Mountain slope on road from Banning to Idyllwild, San Jacinto Mountains.
1677
Comment
RSA77439
Angelica tomentosa
F. W. Peirson
1924-7-29
5024
Riverside
Open Mountain slope on road from Banning to Idyllwild, San Jacinto Mountains.
1677
Comment
RSA77718
Ceanothus greggii var. perplexans
F. W. Peirson
1922-5-20
735
Riverside
Hemet Valley, San Jacinto Mountains
1448
Comment
RSA77816
Pectocarya peninsularis
F. W. Peirson
1920-2-16
1013
Riverside
Palm Canyon stream below the canyon, Palm Springs. region
Comment
RSA77817
Pectocarya setosa
F. W. Peirson
1921-3-21
4059
Riverside
Gordon Trail from Andreas Canyon, east base of the San Jacinto Mtns.
1067
Comment
RSA77820
Pectocarya platycarpa
F. W. Peirson
1928-4-24
7908
Riverside
Cottonwood Spring, west end of Eagle Mtns.
Comment Read comments Oct 9 2010
RSA77839
Larrea tridentata
F. W. Peirson
1914-04
2027
Riverside
Whitewater, Colorado Desert.
Comment
RSA77843
Fagonia laevis
F. W. Peirson
1920-2-16
2029
Riverside
Palm Canyon stream below the canyon, Palm Springs. region
Comment
RSA77844
Fagonia laevis
F. W. Peirson
1932-3-22
9810
Riverside
20 miles North of Blythe on the road to Needles, Eastern Riverside.
152
Comment
RSA77845
Fagonia pachyacantha
F. W. Peirson
1922-4-12
2889
Riverside
along boulevard, 18 mi. southeast of Coachella.
Comment
RSA77846
Callitriche marginata
F. W. Peirson
1922-5-12
3067
Riverside
South of Lake Elsinore.
Comment
RSA77862
Pectocarya platycarpa
F. W. Peirson
1920-2-16
1014
Riverside
Palm Canyon stream below the canyon, Palm Springs. region
Comment
RSA77863
Pectocarya peninsularis
F. W. Peirson
1918-03
1018
Riverside
Coachella Valley, field near Indio.
Comment
RSA77866
Pectocarya recurvata
F. W. Peirson
1920-2-16
1012
Riverside
Palm Canyon stream below the canyon, Palm Springs. region
Comment
RSA77873
Pectocarya heterocarpa
F. W. Peirson
1935-4-17
11473
Riverside
30 miles north of Blythe.
Comment
RSA77874
Heliotropium curassavicum var. oculatum
F. W. Peirson
1920-6-22
994
Riverside
Temescal canyon
305
Comment
RSA77887
Tiquilia palmeri
F. W. Peirson
1926-2-22
5421
Riverside
Thousand-Palms Canyon; Coachella Valley
Comment
RSA77888
Tiquilia palmeri
F. W. Peirson
1930-3-29
8688
Riverside
Colorado Desert. Painted Canyon, near Mecca.
Comment
RSA77889
Tiquilia palmeri
F. W. Peirson
1927-4-12
7176
Riverside
Painted Canyon, near Mecca
Comment
RSA77890
Tiquilia plicata
F. W. Peirson
1914-04
992 a
Riverside
Whitewater east of Beaumont.
Comment
RSA79564
Cryptantha intermedia
F. W. Peirson
1913-04
1023
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA79569
Cryptantha holoptera
F. W. Peirson
1935-4-17
11475
Riverside
30 miles north of Blythe.
Comment
RSA79572
Cryptantha costata
F. W. Peirson
1918-03
5798
Riverside
Irrigated field near Indio.
Comment
RSA79575
Cryptantha holoptera
F. W. Peirson
1927-4-12
7162
Riverside
In Painted Canyon near Mecca.
Comment
RSA79588
Cryptantha angustifolia
F. W. Peirson
1926-2-22
6508
Riverside
Thousand-Palms Canyon; Coachella Valley
Comment
RSA79591
Cryptantha barbigera
F. W. Peirson
1919-4-13
1026
Riverside
Tahquitz Canyon, near Palm Springs.
Comment Read comments Sep 18 2011
RSA79596
Cryptantha barbigera
F. W. Peirson
1928-3-10
7710
Riverside
Near Hidden Spring, N of Salton Sea, Riverside County.
Comment
RSA79608
Cryptantha angustifolia
F. W. Peirson
1928-3-10
7704
Riverside
Flat areas where water had stood, near sand dunes W of Indio
Comment Read comments Oct 23 2011
RSA79623
Cryptantha utahensis
F. W. Peirson
1919-4-13
1025
Riverside
Murray Canyon, Palm Springs region.
Comment
RSA79775
Penstemon clevelandii subsp. connatus
F. W. Peirson
1919-4-14
1106
Riverside
Murray Canyon, Palm Springs Region.
457
Comment
RSA79805
Penstemon californicus
F. W. Peirson
1922-5-21
3048
Riverside
Hemet Valley, San Jacinto Mts.
1372
Comment
RSA79828
Keckiella antirrhinoides
F. W. Peirson
1914-04
1105
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA79895
Physalis crassifolia
F. W. Peirson
1921-3-20
4485
Riverside
Andreas Canyon, near Palm Springs
244
Comment Read comments Oct 18 2007
RSA79897
Physalis crassifolia
F. W. Peirson
1922-4-8
1088
Riverside
between Whitewater and Palm Springs.
Comment
RSA79959
Cryptantha micrantha var. lepida
F. W. Peirson
1922-5-19
4483
Riverside
San Jacinto River, San Jacinto Mtns.
1220
Comment
RSA79960
Cryptantha micrantha var. micrantha
F. W. Peirson
1920-2-16
s.n.
Riverside
Colorado Desert. Garden of Eden east of Palm Springs.
Comment
RSA80004
Amsinckia intermedia
F. W. Peirson
1921-3-22
s.n.
Riverside
Murray Canyon, near Palm Springs
487
Comment
RSA80057
Veronica peregrina subsp. xalapensis
F. W. Peirson
1922-5-5
3032
Riverside
On floor of Hemet Valley.
1372
Comment
RSA80199
Plagiobothrys collinus var. ursinus
F. W. Peirson
1922-5-19
3041
Riverside
Hemet Valley, San Jacinto Mountains.
1341
Comment
RSA80213
Plagiobothrys kingii
F. W. Peirson
1922-4-29
2924
Riverside
Field S of Lake Elsinore
375
Comment Read comments Dec 19 2018
RSA80216
Plagiobothrys leptocladus
F. W. Peirson
1922-4-29
4273
Riverside
Field S of Lake Elsinore
375
Comment
RSA80248
Mohavea confertiflora
F. W. Peirson
1917-4-1
1102
Riverside
Along south edge of Colorado Desert embayment east of Palm Springs, above ''Garden of Eden'.
Comment
RSA80251
Mohavea confertiflora
F. W. Peirson
1928-3-10
7708
Riverside
Hidden Spring, northern Colorado Desert.
Comment
RSA80303
Lycium torreyi
F. W. Peirson
1916-4-1
1087
Riverside
Palm Springs region, head of Coachella Valley.
Comment
RSA80305
Lycium fremontii
F. W. Peirson
1927-4-12
7157
Riverside
East branch of Painted Canyon, near Mecca.
Comment
RSA80322
Orthocarpus densiflorus var. gracilis
F. W. Peirson
1930-5-10
8776
Riverside
Summit St John's Grade., south of Hemet.
762
Comment
RSA80331
Lycium andersonii
F. W. Peirson
1922-4-29
1084
Riverside
Aguanga, western Riverside Co.
610
Comment
RSA80345
Lycium brevipes
F. W. Peirson
1926-1-31
6493
Riverside
Dos Palmas, Colorado Desert.
Comment
RSA80380
Solanum umbelliferum
F. W. Peirson
1918-03
1080
Riverside
Moreno.
Comment Read comments Mar 20 2011
RSA80383
Solanum umbelliferum
F. W. Peirson
1922-4-29
4487
Riverside
Leach Canyon. (base of Santa Ana Mts., near Elsinore)
534
Comment
RSA80394
Daucus pusillus
F. W. Peirson
1921-3-22
2379
Riverside
Murray Canyon near Palm Springs.
457
Comment
RSA80435
Antirrhinum filipes
F. W. Peirson
1920-2-16
1101
Riverside
Palm Canyon stream below the canyon, Palm Springs. region
Comment
RSA80440
Mimulus fremontii var. fremontii
F. W. Peirson
1920-6-22
4723
Riverside
Temescal canyon, western Riverside Co.
305
Comment
RSA80472
Mimulus latidens
F. W. Peirson
1922-5-19
3043
Riverside
Menifee Valley (South of Perris)
427
Comment
RSA80482
Mimulus diffusus
F. W. Peirson
1922-4-30
2934
Riverside
hills south of Tucalota Creek, below summit to St. Johns grade, road from Hemet to Aguanga
Comment Read comments May 29 2011
RSA80634
Epilobium densiflorum
F. W. Peirson
1924-7-29
5033
Riverside
Banning to Idyllwild road, San Jacinto Mountains.
1570
Comment
RSA80646
Epilobium pygmaeum
F. W. Peirson
1922-5-19
4112
Riverside
Menifee Valley, near Murrieta.
427
Comment
RSA80685
Oligomeris linifolia
F. W. Peirson
1927-4-12
7161
Riverside
Painted canyon, near Mecca.
Comment
RSA80731
Nicotiana clevelandii
F. W. Peirson
1928-3-10
7709
Riverside
Along sides of main canyon near Hidden Springs, northeast of Mecca.
Comment
RSA80734
Nicotiana clevelandii
F. W. Peirson
1926-2-22
6511
Riverside
Thousand Palm Canyon, northwest end of Coachella Valley.
122
Comment
RSA80738
Cryptantha maritima
F. W. Peirson
1927-4-12
7172
Riverside
Painted Canyon, near Mecca
Comment
RSA80739
Cryptantha maritima
F. W. Peirson
1935-4-17
11474
Riverside
30 miles north of Blythe.
Comment
RSA80741
Cryptantha maritima
F. W. Peirson
1919-4-13
1027
Riverside
first canyon east of Palm Canyon, Palm Springs region.
Comment
RSA80747
Cryptantha racemosa
F. W. Peirson
1921-3-23
2377
Riverside
Deep Canyon south of Coachella Valley
335
Comment
RSA80749
Cryptantha racemosa
F. W. Peirson
1927-4-12
7170
Riverside
Painted Canyon, near Mecca
Comment
RSA80751
Cryptantha racemosa
F. W. Peirson
1920-2-16
4718
Riverside
Foot of Alkali Canyon, southeast of Palm Canyon, Coachella Valley.
Comment Read comments Aug 30 2011
RSA80819
Frankenia grandifolia
F. W. Peirson
1924-6-21
4761
Riverside
Alkaline flat near Lake Elsinore near south end
375
Comment
RSA80830
Pedicularis densiflora
F. W. Peirson
1921-3-19
2741
Riverside
4 miles west of Beaumont, on road to Redlands.
Comment
RSA81010
Fouquieria splendens
F. W. Peirson
1921-3-23
2391
Riverside
Deep canyon wash, south of Coachella Valley
Comment
RSA82009
Justicia californica
F. W. Peirson
1916-04
1172
Riverside
abundant about mouth of Tahquitz Canyon, Palm Springs.
Comment
RSA82107
Mimulus aurantiacus var. puniceus
F. W. Peirson
1925-5-20
6014
Riverside
1 mile northwest of Dripping Spring, east of Temecula.
457
Comment
RSA82119
Orobanche cooperi subsp. cooperi
F. W. Peirson
1930-3-29
8692
Riverside
At foot of Painted Canyon, lower Coachella Valley.
Comment
RSA82215
Verbena bracteata
F. W. Peirson
1935-4-17
11477
Riverside
30 miles north of Blythe.
Comment
RSA82229
Castilleja affinis
F. W. Peirson
1929-5-4
8338
Riverside
Mostly about bushes on low hill about 2 miles south of summit of St. Johns Grade south of Hemet.
701
Comment
RSA82388
Salvia vaseyi
F. W. Peirson
1933-4-13
10635
Riverside
Deep Canyon to Santa Rosa Mts. road
488
Comment
RSA82389
Salvia vaseyi
F. W. Peirson
1930-6-1
8930
Riverside
Morongo Canyon, head of Coachella Valley.
610
Comment
RSA82390
Salvia vaseyi
F. W. Peirson
1922-12-27
4060
Riverside
On rough mountain slope between two forks of Andreas Canyon, near Palm Springs
610
Comment
RSA82425
Salvia eremostachya
F. W. Peirson
1933-4-13
10643
Riverside
Deep Canyon to Idyllwild, Santa Rosa Mountains
1372
Comment
RSA82479
Chilopsis linearis subsp. arcuata
F. W. Peirson
1921-4-13
1173
Riverside
Deep Canyon; north base of Santa Rosa Mountains, Riverside.
335
Comment
RSA82521
Limosella acaulis
F. W. Peirson
1922-5-20
3054
Riverside
Hemet Valley. (San Jacinto Mountains)
1341
Comment
RSA82524
Stemodia durantifolia
F. W. Peirson
1919-4-14
991
Riverside
Murray Canyon near Palm Springs
381
Comment
RSA82573
Stachys stebbinsii
F. W. Peirson
1924-7-27
4994
Riverside
Deer Springs, San Jacinto Mtns.
2668
Comment
RSA82574
Stachys rigida subsp. quercetorum
F. W. Peirson
1924-6-21
4759
Riverside
Temescal Canyon.
290
Comment
RSA83383
Dudleya saxosa subsp. aloides
F. W. Peirson
1928-4-24
7895
Riverside
Below Cottonwood Spring, northern edge of Colorado Desert.
Comment
RSA83412
Monardella australis subsp. australis
F. W. Peirson
1924-7-27
4993
Riverside
Near lower part of Deer Springs, Dark Canyon, San Jacinto Mts.
2591
Comment
RSA83427
Monardella nana subsp. tenuiflora
F. W. Peirson
1924-7-27
4990
Riverside
San Jacinto Mountains: Dark Canyon.
2226
Comment
RSA83467
Hyptis emoryi
F. W. Peirson
1919-4-13
1078
Riverside
first canyon east of Palm Canyon, Palm Springs region.
Comment
RSA83468
Hyptis emoryi
F. W. Peirson
1916-04
1079
Riverside
Near Palm Springs.
Comment
RSA84261
Azolla filiculoides
Frank W. Peirson
1922-4-30
2948
Riverside
Lancaster Valley, less than 2 miles from the Temecula River on the road to Hemet.
518
Comment
RSA84385
Lithophragma affine subsp. mixtum
F. W. Peirson
1922-5-19
4189
Riverside
San Jacinto River.
1143
Comment
RSA84404
Jepsonia parryi
F. W. Peirson
1922-12-27
3337
Riverside
Between forks of Andreas Canyon, near Palm Springs
609
Comment
RSA84468
Clematis pauciflora
F. W. Peirson
1921-3-22
s.n.
Riverside
Murray Canyon, near Palm Springs
427
Comment
RSA84521
Philadelphus microphyllus subsp. pumilus
F. W. Peirson
1924-7-27
4991
Riverside
Low divaricate bush on rocks, Dark Canyon, San Jacinto Mts, Riverside County
2287
Comment
RSA84907
Crassula solieri
F. W. Peirson
1922-4-29
2944
Riverside
mud flat south of Lake Elsinore
Comment
RSA84912
Crassula connata
F. W. Peirson
1920-2-16
1935
Riverside
Palm Canyon stream below the canyon, Palm Springs. region
Comment
RSA84991
Adiantum capillus-veneris
F. W. Peirson
1919-4-13
1521
Riverside
First canyon east of Palm Canyon, Palm Springs region.
Comment
RSA85057
Ephedra aspera
F. W. Peirson
1922-4-9
3339
Riverside
Andreas Canyon near Palm Springs.
426
Comment
RSA85062
Adenostoma sparsifolium
F. W. Peirson
1907-04
693
Riverside
road below Strawberry valley.
Comment
RSA85070
Crossosoma bigelovii
F. W. Peirson
1921-3-21
2808
Riverside
Gordon Trail from Andreas Canyon, east base of the San Jacinto Mtns.
1067
Comment
RSA85071
Crossosoma bigelovii
F. W. Peirson
1920-2-15
1953
Riverside
Small canyon north of Tahquitz Canyon, east base of San Jacinto Mtns.
Comment
RSA85072
Crossosoma bigelovii
F. W. Peirson
1935-2-22
11402
Riverside
Side canyon opening at the foot of the road from Deep Canyon to Idyllwild, north base of the Santa Rosa Mtns.
366
Comment
RSA85074
Crossosoma bigelovii
F. W. Peirson
1933-4-15
10653
Riverside
Whitewater River E of Cabezon, 4.5 mi. up stream from Hwy.
701
Comment
RSA85169
Ephedra californica
F. W. Peirson
1925-4-17
6021
Riverside
Cabazon, San Gorgonio Pass.
Comment Read comments Mar 13 2011
RSA85174
Ephedra trifurca
F. W. Peirson
1938-4-10
12378
Riverside
Near banks of Colorado River, 12-15 miles north of Blythe.
Comment
RSA85180
Ephedra fasciculata
F. W. Peirson
1928-4-24
7904
Riverside
Cottonwood Spring, west end of Eagle Mtns.
Comment
RSA85183
Ephedra viridis
F. W. Peirson
1933-4-13
10641
Riverside
Road from Deep Canyon south of Indio to Idyllwild
1220
Comment
RSA85232
Horkelia clevelandii
F. W. Peirson
1924-7-29
5255
Riverside
Banning to Idyllwild road, San Jacinto Mountains.
1570
Comment
RSA85233
Horkelia clevelandii
F. W. Peirson
1924-7-28
5006
Riverside
Pine Flats on road from Banning to Idyllwild
1799
Comment
RSA85537
Cheilanthes covillei
F. W. Peirson
1922-4-10
s.n.
Riverside
Murray Canyon, Palm Springs Region.
457
Comment
RSA85538
Cheilanthes viscida
F. W. Peirson
1922-12-27
4295
Riverside
On rough mountain slope between two forks of Andreas Canyon, near Palm Springs
609
Comment
RSA85545
Cheilanthes viscida
F. W. Peirson
1921-3-22
2371
Riverside
Murray Canyon, south side in canyon
457
Comment
RSA85548
Cheilanthes covillei
F. W. Peirson
1928-11-30
8213
Riverside
about 1 mile north of Cottonwood Spring, northeast of Mecca.
Comment
RSA85555
Cheilanthes covillei
F. W. Peirson
1921-3-22
2331
Riverside
Murray Canyon near Palm Springs.
488
Comment
RSA85564
Potamogeton pusillus
F. W. Peirson
1922-5-21
4116
Riverside
Thomas Ranch, Hemet Valley, San Jacinto Mtns.
1338
Comment
RSA85825
Cupressus forbesii
F. W. Peirson
1922-5-28
3058
Riverside
Canyon floor in canyon east from Santa Ana River Canyon. at 400 ft.
121
Comment Read comments Feb 28 2013
RSA85835
Marsilea vestita
F. W. Peirson
1930-5-10
8768
Riverside
along the boulevard opposite March Field, south of Riverside
457
Comment
RSA85840
Marsilea vestita
F. W. Peirson
1922-4-29
2937
Riverside
mud flat south of Lake Elsinore
Comment
RSA85863
Notholaena californica subsp. californica
F. W. Peirson
1922-5-21
3053
Riverside
about 4 miles north of San Jacinto
457
Comment
RSA85864
Cheilanthes newberryi
F. W. Peirson
1922-4-30
2929
Riverside
foot of St Johns Grade, south of Hemet
Comment
RSA85931
Pilularia americana
F. W. Peirson
1922-4-29
2922
Riverside
South of Lake Elsinore.
381
Comment
RSA85934
Selaginella bigelovii
Frank W. Peirson
1920-2-15
1530
Riverside
Murray Canyon near Palm Springs
Comment
RSA85940
Selaginella eremophila
Frank W. Peirson
1920-2-15
1531
Riverside
Tahquitz Canyon near Palm Springs
Comment
RSA85942
Selaginella bigelovii
Frank W. Peirson
1921-3-22
s.n.
Riverside
Murray Canyon, near Palm Springs
487
Comment
RSA85943
Selaginella eremophila
Frank W. Peirson
1920-12-28
s.n.
Riverside
Murray Canyon, near Palm Springs
304
Comment Read comments May 4 2007
RSA86207
Notholaena californica subsp. leucophylla
F. W. Peirson
1921-3-20
1503
Riverside
Andreas Canyon, near Palm Springs.
243
Comment
RSA86209
Cheilanthes parryi
F. W. Peirson
1920-12-28
1504
Riverside
Murray Canyon, near Palm Springs
304
Comment
RSA86299
Potentilla rimicola
F. W. Peirson
1924-7-27
5000
Riverside
Pinnacle 0.5 miles west of Deer Spring
2439
Comment
RSA86343
Juniperus californica
F. W. Peirson
1922-12-27
3332
Riverside
Between forks of Andreas Canyon, near Palm Springs
609
Comment
RSA86362
Pinus quadrifolia
F. W. Peirson
1922-5-20
3059
Riverside
Hemet Valley, San Jacinto Mts.
1494
Comment
RSA86651
Purshia tridentata var. glandulosa
F. W. Peirson
1933-4-13
10645
Riverside
Between Deep Canyon and Idylwild.
1524
Comment
RSA86676
Cercocarpus minutiflorus
F. W. Peirson
1921-3-21
4191
Riverside
Gordon Trail.
1372
Comment
RSA86722
Aristida adscensionis var. abortiva
F. W. Peirson
1921-3-23
2374
Riverside
Deep Canyon south of Coachella Valley
335
Comment
RSA86763
Deschampsia danthonioides var. gracilis
F. W. Peirson
1922-5-19
3022
Riverside
10 miles northeast of Murrieta.
Comment
RSA86856
Prunus fremontii
F. W. Peirson
1917-4-1
1986
Riverside
Fruiting specimen from Tahquitz Canyon, Palm Springs region.
Comment
RSA86861
Prunus fasciculata
F. W. Peirson
1928-4-24
7915
Riverside
Plateau land west of Cottonwood Springs, northeast of mecca.
Comment
RSA86945
Lupinus arizonicus
F. W. Peirson
1921-4-13
2497
Riverside
Deep Canyon, about 12 miles southeast of Palm Springs.
274
Comment
RSA86946
Lupinus arizonicus
F. W. Peirson
1920-3-16
703
Riverside
Sandy places opposite mouth of Andreas Canyon, Southwest of Palm Springs.
Comment
RSA86947
Lupinus arizonicus
F. W. Peirson
1935-4-17
11472
Riverside
25 miles north of Blythe, eastern Riverside.
Comment
RSA86961
Lupinus concinnus subsp. concinnus
F. W. Peirson
1922-4-30
s.n.
Riverside
Near summit of St. Johns Grade, south of Hemet.
Comment
RSA86973
Lupinus sparsiflorus subsp. sparsiflorus
F. W. Peirson
1921-3-19
7717
Riverside
Whitewater Grade about 2 miles east of Banning
Comment
RSA86976
Prosopis pubescens
F. W. Peirson
1920-12-29
2338
Riverside
Andreas Canyon near Palm Springs
244
Comment
RSA86985
Cercidium floridum
F. W. Peirson
1921-4-13
sn
Riverside
Deep Canyon Wash, about 12 miles SE of Palm Springs.
152
Comment
RSA86993
Prosopis glandulosa var. torreyana
F. W. Peirson
1919-4-12
4429
Riverside
Palm Canyon, near Palm springs.
Comment
RSA86994
Cercidium floridum
F. W. Peirson
1919-4-15
575
Riverside
Large tree near road to Palm Canyon from Palm Springs.
Comment
RSA86998
Caesalpinia virgata
F. W. Peirson
1930-3-1
8691
Riverside
Open desert at foot of Painted Canyon, near Mecca.
Comment
RSA86999
Caesalpinia virgata
F. W. Peirson
1917-4-1
s.n
Riverside
Along south edge of Colorado Desert embayment east of Palm Springs, above ''Garden of Eden'.
Comment
RSA87000
Caesalpinia virgata
F. W. Peirson
1922-4-11
4426
Riverside
Deep Canyon Wash, south side of Coachella Valley
274
Comment
RSA87018
Acacia greggii var. arizonica
F. W. Peirson
1916-04
1996
Riverside
Near Palm Springs.
Comment
RSA87019
Acacia greggii var. arizonica
F. W. Peirson
1921-4-11
4066
Riverside
Murray Canyon. Palm Springs region.
Comment
RSA87020
Prosopis glandulosa var. torreyana
F. W. Peirson
1914-04
1995
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA87021
Prosopis glandulosa var. torreyana
F. W. Peirson
1920-6-22
4068
Riverside
Temescal Canyon north of Elsinore
290
Comment
RSA87025
Lupinus microcarpus var. densiflorus
F. W. Peirson
1914-04
705
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA87035
Lupinus shockleyi
F. W. Peirson
1922-4-18
2434
Riverside
Whitewater River, head of Coachella Valley, Riverside County
Comment
RSA87043
Lupinus arizonicus
F. W. Peirson
1916-04
542
Riverside
Region of Palm Springs.
Comment
RSA87055
Lupinus densiflorus var. lacteus
F. W. Peirson
1922-4-29
4224
Riverside
Dripping Spring, Temecula River, southwestern Riverside Co.
457
Comment
RSA87061
Hordeum brachyantherum
F. W. Peirson
1922-5-18
4336
Riverside
Temescal Canyon
320
Comment
RSA87084
Lupinus brevior
F. W. Peirson
1922-4-9
2894
Riverside
near Palm Canyon stream about 0.5 mile below mouth of Canyon, Palm Springs region
Comment
RSA87095
Lupinus pallidus
F. W. Peirson
1922-4-9
s.n.
Riverside
Palm Canyon region, head of Coachella Valley
Comment
RSA87096
Lupinus concinnus subsp. optatus
F. W. Peirson
1938-5-30
s.n.
Riverside
Thomas Mountain, Hemet Valley.
1402
Comment
RSA87098
Lupinus bicolor
F. W. Peirson
1921-3-19
91
Riverside
2 miles east of Banning on road to Indio, Riverside
Comment
RSA87101
Lupinus bicolor subsp. tridentatus
F. W. Peirson
1922-5-18
3064
Riverside
Keene Camp, San Jacinto Mts., Riverside county.
1463
Comment
RSA87112
Galium angustifolium subsp. angustifolium
F. W. Peirson
1920-6-22
4500
Riverside
Dripping Springs, Temecula River
457
Comment
RSA87136
Leptochloa fusca subsp. uninervia
F. W. Peirson
1924-12-30
5404
Riverside
Thousand-Palms Canyon, north side of Coachella Valley.
122
Comment
RSA87149
Quercus palmeri
F. W. Peirson
1922-5-20
3016
Riverside
Upper end of Hemet Valley
1463
Comment
RSA87193
Lupinus excubitus var. austromontanus
F. W. Peirson
1938-5-30
12411
Riverside
Thomas Mountain, Hemet Valley.
1402
Comment
RSA87356
Muhlenbergia microsperma
F. W. Peirson
1921-3-22
4323
Riverside
Andreas Canyon, Palm Springs region
Comment
RSA87376
Agrostis scabra
F. W. Peirson
1924-7-27
4982
Riverside
Dark Canyon, San Jacinto Mountains.
1768
Comment
RSA87459
Lupinus concinnus subsp. optatus
F. W. Peirson
1922-5-19
7721
Riverside
Road to Keenes Camp, San Jacinto Mts.
Comment
RSA88679
Carex lemmonii
F. W. Peirson
1924-7-27
6024
Riverside
Deer Spring, Dark Canyon, San Jacinto Mountains.
2439
Comment
RSA88858
Carex praegracilis
F. W. Peirson
1922-5-20
3062
Riverside
Hemet Valley, San Jacinto Mountains.
1371
Comment
RSA90167
Astragalus lentiginosus var. coachellae
F. W. Peirson
1920-12-29
585
Riverside
Whitewater, at head of Coachella Valley.
Comment
RSA90306
Lotus rigidus
F. W. Peirson
1919-4-14
712
Riverside
Murray Canyon, near Palm Springs.
Comment
RSA90697
Gutierrezia californica
F. W. Peirson
1920-12-28
5298
Riverside
Murray Canyon near Palm Springs
Comment
RSA91096
Trifolium variegatum
F. W. Peirson
1919-4-14
561
Riverside
Murray Canyon, near Palm Springs.
Comment
RSA91284
Isocoma acradenia var. eremophila
F. W. Peirson
1920-12-28
2335
Riverside
Murray Canyon near Palm Springs
Comment
RSA92097
Carex nebrascensis
F. W. Peirson
1924-7-27
5002
Riverside
South side of Dark Canyon, San Jacinto Mountains.
2499
Comment
RSA92258
Layia platyglossa
F. W. Peirson
1922-5-19
3042
Riverside
Hemet Valley, San Jacinto Mountains.
1341
Comment Read comments Dec 16 2012
RSA92259
Layia platyglossa subsp. campestris
F. W. Peirson
1919-4-15
2575
Riverside
Whitewater Grade near Cabazon
549
Comment Read comments Mar 13 2011
RSA92398
Bebbia juncea
F. W. Peirson
1920-12-28
5282
Riverside
Murray Canyon near Palm Springs
Comment
RSA92898
Parietaria hespera var. hespera
F. W. Peirson
1920-2-15
1714
Riverside
Tahquitz Canyon near Palm Springs
Comment
RSA92916
Eriophyllum ambiguum var. paleaceum
F. W. Peirson
1919-4-13
1372
Riverside
Tahquitz Canyon, near Palm Springs.
Comment Read comments Sep 18 2011
RSA93115
Corethrogyne filaginifolia
F. W. Peirson
1928-9-6
8206
Riverside
1 mile W of Cabazon, San Gorgonio Pass
Comment Read comments Mar 13 2011
RSA93159
Baccharis sergiloides
F. W. Peirson
1920-12-28
1295
Riverside
Murray Canyon near Palm Springs
Comment
RSA93244
Chrysothamnus paniculatus
F. W. Peirson
1922-12-26
3331
Riverside
Whitewater Grade, near Cabazon
Comment Read comments Mar 13 2011
RSA93342
Xylorhiza tortifolia
F. W. Peirson
1928-4-24
7898
Riverside
Cottonwood Springs, northern Colorado Desert
Comment
RSA93726
Pleurocoronis pluriseta
F. W. Peirson
1919-4-13
1213
Riverside
Tahquitz Canyon, near Palm Springs.
Comment Read comments Sep 18 2011
RSA93729
Trichocoronis wrightii var. wrightii
F. W. Peirson
1922-5-21
3049
Riverside
near foot of Jack Rabbit Grade. (south of Moreno)
427
Comment
RSA93902
Encelia actoni
F. W. Peirson
1928-4-24
7891
Riverside
Cottonwood Springs, northern Colorado Desert
Comment
RSA94144
Hulsea vestita subsp. callicarpha
F. W. Peirson
1924-7-27
5005
Riverside
Upper Dark Canyon, Deer Springs region, San Jacinto Mts.
2590
Comment
RSA94385
Dyssodia porophylloides
F. W. Peirson
1919-4-14
1411
Riverside
Murray Canyon, Palm Springs Region.
457
Comment
RSA94395
Chaenactis stevioides
F. W. Peirson
1928-4-24
7905
Riverside
Cottonwood Springs, northern Colorado Desert
Comment Read comments Oct 9 2010
RSA94829
Trixis californica
F. W. Peirson
1919-4-14
1463
Riverside
Murray Canyon, near Palm Springs.
Comment
RSA95070
Rafinesquia californica
F. W. Peirson
1919-4-14
2763
Riverside
Murray Canyon, Palm Springs Region.
457
Comment
RSA95209
Stephanomeria exigua subsp. exigua
F. W. Peirson
1922-12-26
3330
Riverside
Whitewater Grade, near Cabazon
Comment Read comments Mar 13 2011
RSA95318
Sphaeralcea ambigua subsp. ambigua
F. W. Peirson
1928-4-24
7892
Riverside
Cottonwood Springs, northern Colorado Desert
Comment Read comments Oct 9 2010
RSA97439
Phoradendron californicum
F. W. Peirson
1920-12-28
1719
Riverside
Murray Canyon near Palm Springs
Comment
SBBG27953
Chorizanthe corrugata
F. W. Peirson
1927-4-12
7175
Riverside
near fork of Painted Cyn near Mecca
Comment
SBBG28232
Eriogonum thomasii
F. W. Peirson
1927-4-12
7171
Riverside
Painted Cyn, near Mecca
Comment
SBBG29172
Trixis californica var. californica
F. W. Peirson
1920-2-16
Riverside
Murray Cyn, near Palm Springs
Comment
SBBG29999
Atriplex polycarpa
F. W. Peirson
1917-4-1
1812
Riverside
Palm Springs
Comment
SBBG54433
Sphaeralcea ambigua
F. W. Peirson
1933-4-13
10639
Riverside
rd from Deep Cyn to Idyllwild
762
Comment
SBBG98295
Baileya pauciradiata
F. W. Peirson
1921-4-12
2775
Riverside
Indian Wells
Comment
SD67591
Atriplex lentiformis
F. W. Peirson
1924-12-30
5413
Riverside
Thousand Palms Canyon, Coachella Valley.
Comment
SD87554
Cuscuta campestris
Frank W. Peirson
1932-11-26
9659
Riverside
Just south of Palm Grove, 1000 Palms.
120
Comment
SD87599
Senecio mohavensis
F. W. Peirson
1921-3-22
2378
Riverside
Murray CaA'on near Palm Springs.
455
Comment
SD87602
Astragalus palmeri
F. W. Peirson
1921-3-23
4752
Riverside
Santa Rosa Mountains, Deep Canyon
334
Comment
SD87604
Astragalus palmeri
F. W. Peirson
1921-3-21
4751
Riverside
Gordon Trail, Palm Canyon to San Jacinto Mountains
1220
Comment
SD87606
Malacothamnus densiflorus
F. W. Peirson
1920-6-22
2189
Riverside
Temecula River.
456
Comment
SD87621
Astragalus nuttallianus var. imperfectus
Frank W. Peirson
1922-4-9
584
Riverside
Murray Canyon, near Palm Springs.
Comment
SD87635
Navarretia intertexta
Frank W. Peirson
1922-5-19
4141
Riverside
Five miles northeast of Murrieta on road to Perris
Comment Read comments Nov 19 2011
SD87651
Cryptantha utahensis
F. W. Peirson
1919-4-13
1025
Riverside
Murray Canyon
Comment
SD87675
Deinandra kelloggii
F. W. Peirson
1924-6-21
Riverside
Temescal Canyon.
Comment
SD87688
Petalonyx linearis
F. W. Peirson
1921-3-23
2376
Riverside
Deep CaA'on east of Palm Springs.
334
Comment
SD87727
Dicoria canescens
F. W. Peirson
1920-12-29
Riverside
1.5 miles east of Whitewater
Comment Read comments Aug 21 2007
SD87729
Encelia actoni
Frank W. Peirson
1928-4-24
7891
Riverside
Cottonwood Spring.
Comment Read comments Oct 9 2010
SD87749
Eleocharis geniculata
F. W. Peirson
1924-12-30
5408
Riverside
1000 Palms Canon
Comment
SD87753
Myriopteris covillei
Frank W. Peirson
1921-3-22
2331
Riverside
Murray CaA'on
Comment
SD87784
Atriplex polycarpa
Frank W. Peirson
1927-11-25
7678
Riverside
1000-Palm Canyon.
120
Comment
SD87786
Atriplex hymenelytra
F. W. Peirson
1924-12-30
5415
Riverside
1000 Palms Canon
Comment
SD87790
Selaginella bigelovii
F. W. Peirson
1920-2-15
1530
Riverside
Murray CaA'on
Comment
SD87813
Cryptantha maritima
Frank W. Peirson
1935-4-17
11474
Riverside
30 miles north of Blythe on small alluvial flat along the Colorado River
Comment
SD87822
Pectocarya heterocarpa
Frank W. Peirson
1935-4-17
Riverside
30 miles north of Blythe in small alluvial flat along the Colorado River
Comment
UC1076215
Tidestromia oblongifolia
Frank W. Peirson
1924-12-30
5416
Riverside
1000 Palm Canyon
121
Comment
UC1099771
Juncus bufonius var. occidentalis
Frank W. Peirson
1922-4-29
2928
Riverside
s side Lake Elsinore
Comment
UC483076
Salix laevigata
Frank W. Peirson
1928-3-10
7700
Riverside
Snow Creek Auto Camp Whitewater
Comment
UC483079
Salix exigua
Frank W. Peirson
1924-12-30
5410
Riverside
1000-Palm Canyon Colorado Desert, 1000-Palm Canyon
121
Comment
UC501449
Monoptilon bellioides
Frank W. Peirson
1927-4-24
7899
Riverside
Cottonwood Spring
Comment Read comments Oct 9 2010
UC501453
Amsonia tomentosa
Frank W. Peirson
1928-4-25
7921
Riverside
ca. 10 mi. s. 29 Palms (White Tank Region); White Tank Region
Comment
UC501500
Dicoria canescens
Frank W. Peirson
1924-12-30
5425
Riverside
1000 Palms Canyon
121
Comment
UC501502
Chimaphila umbellata
Frank W. Peirson
1924-7-27
5004
Riverside
1 mi. w. Deer Spring; San Jacinto Mts.
2438
Comment
UC501518
Tidestromia oblongifolia
Frank W. Peirson
1924-12-30
5416
Riverside
1000-Palms. North of the Palm Grove.
121
Comment
UC501576
Dalea mollis
Frank W. Peirson
1932-3-22
9811
Riverside
20 mi. n. Blythe (on the Needles Rd.)
Comment
UC501578
Lotus argophyllus var. argophyllus
Frank W. Peirson
1922-4-30
2933
Riverside
St. John's Grade
762
Comment
UC501587
Muilla maritima
Frank W. Peirson
1922-4-29
2942
Riverside
2 mi s Lake Elsinore (along boulevard)
365
Comment
UC501618
Brodiaea filifolia
Frank W. Peirson
1930-5-10
8772
Riverside
1 mi E of Perris
457
Comment
UC501622
Dicentra chrysantha
Frank W. Peirson
1924-7-29
5025
Riverside
Banning-Idyllwild Road; San Jacinto Mts.
1767
Comment
UC501623
Baccharis sergiloides
Frank W. Peirson
1928-9-6
8205
Riverside
Morongo Canyon
609
Comment
UC501636
Triodanis biflora
Frank W. Peirson
1926-5-2
6723
Riverside
grade n Dripping Spring; n of Dripping Spring
426
Comment
UC511757
Phacelia distans
Frank W. Peirson
1922-4-9
956
Riverside
canyon bottom Murray Canyon (near end of road)
304
Comment
UC511759
Phacelia campanularia subsp. campanularia
Frank W. Peirson
1926-2-22
6499
Riverside
talus slope at e end Bridge over Whitewater River
Comment
UC511829
Salvia vaseyi
Frank W. Peirson
1933-4-13
10635
Riverside
road from Deep Canyon to Idyllwild
487
Comment
UC511830
Eriogonum elongatum var. elongatum
Frank W. Peirson
1933-4-15
10651
Riverside
4 1/2 mi above the bridge; Whitewater River
701
Comment
UC511831
Forestiera pubescens
Frank W. Peirson
1933-4-13
10647
Riverside
road from Deep Canyon to Idyllwild (at Palm Creek crossing)
1386
Comment
UC511832
Salvia eremostachya
Frank W. Peirson
1933-4-13
10643
Riverside
road from Deep Canyon to Idyllwild
1371
Comment
UC511833
Sphaeralcea ambigua var. rosacea
Frank W. Peirson
1933-4-13
10639
Riverside
road from Deep Canyon to Idlewild
762
Comment
UC511835
Garrya flavescens
Frank W. Peirson
1933-4-13
10644
Riverside
road from Deep Canyon to Idyllwild
1524
Comment
UC511836
Purshia tridentata var. glandulosa
Frank W. Peirson
1933-4-13
10645
Riverside
road from Deep Canyon to Idyllwild
1524
Comment
UC511837
Baccharis salicifolia subsp. salicifolia
Frank W. Peirson
1933-4-15
10654
Riverside
4 1/2 mi above bridge; Whitewater River
701
Comment
UC511880
Crossosoma bigelovii
Frank W. Peirson
1933-4-15
10653
Riverside
4 1/2 mi above bridge; Whitewater River
701
Comment
UC511896
Eriophyllum ambiguum var. paleaceum
Frank W. Peirson
1933-4-13
10638
Riverside
road from Deep Canyon to Idlewild
762
Comment
UC511923
Phacelia ivesiana var. pediculoides
Frank W. Peirson
1922-4-12
2856
Riverside
15 mi se Coachella (along the boulevard)
Comment
UC555398
Caesalpinia virgata
Frank W. Peirson
1920-2-16
1993
Riverside
near foot Palm Canyon
Comment
UC555405
Lotus rigidus
Frank W. Peirson
1922-4-9
Riverside
Andreas Canyon
Comment
UC566729
Trichoptilium incisum
Frank W. Peirson
1920-2-16
Riverside
Andreas Canyon Region Colorado Desert
Comment
UC566794
Lomatium utriculatum
Frank W. Peirson
Apr 29 1922-May 18 1922
2932
Riverside
roadside s. lake Elsinore
Comment
UC566919
Eustoma exaltatum
Frank W. Peirson
1924-12-30
5419
Riverside
1000-Palm Canyon
121
Comment
UC570561
Hymenoxys odorata
Frank W. Peirson
1935-4-17
11468
Riverside
20 mi s Blythe
Comment
UC570587
Hoffmannseggia glauca
Frank W. Peirson
1935-4-17
11469
Riverside
9 mi s Blythe
Comment
UC570588
Sisymbrium irio
Frank W. Peirson
1935-4-17
11470
Riverside
Blythe, along main street of the town and exactly opposite the High School Blythe
Comment
UC599196
Polygonum argyrocoleon
Frank W. Peirson
1938-4-10
12379
Riverside
1-2 mi w Blythe (in ditch on roadside)
Comment
UC634597
Eriogonum thomasii
Frank W. Peirson
1927-4-12
7171
Riverside
foot of Painted Canyon Painted Canyon
Comment
UC635494
Calandrinia ambigua
Frank W. Peirson
1926-2-22
6512
Riverside
rocky hills along summits 1000-Palm Canyon
152
Comment
UC640230
Pectis papposa var. papposa
Frank W. Peirson
1938-11-12
12636
Riverside
directly opposite the road from Mecca (Imperial Valley Boulevard); Imperial Valley Boulevard
0
Comment
UC672284
Xylorhiza cognata
Frank W. Peirson
1927-4-12
7159
Riverside
Painted Canyon
Comment
UC908024
Gilia ochroleuca subsp. exilis
Frank W. Peirson
1928-3-24
7725
Riverside
near Auto Camp (Temescal Canyon); Temescal Canyon
304
Comment
UC908061
Gilia latifolia
Frank W. Peirson
1926-1-31
6498
Riverside
Dos Palmas
Comment
UC908107
Saltugilia australis
Frank W. Peirson
1921-3-22
4136
Riverside
Murray Canyon Colorado Desert, Murray Canyon
Comment
UC908751
Saltugilia australis
Frank W. Peirson
1928-4-19
7848
Riverside
hills n Elsinore; hills n of Elsinore
457
Comment
UC909104
Loeseliastrum schottii
Frank W. Peirson
1926-2-22
6506
Riverside
n. of grove palms 1000-Palm Canyon
152
Comment
UC909116
Langloisia setosissima subsp. setosissima
Frank W. Peirson
1927-4-12
7177
Riverside
at camp near forks Painted Canyon; Colorado Desert, Painted Canyon
Comment
UC909126
Linanthus dianthiflorus
Frank W. Peirson
1922-4-30
2930
Riverside
road from Temecula River to Hemet
Comment Read comments Mar 24 2011
UC912512
Viguiera parishii
Frank W. Peirson
1921-3-20
Riverside
Murray Canyon Region Colorado Desert, Murray Canyon Region
Comment
UCD50378
Achnatherum hymenoides
F. W. Peirson
1921-3-24
4322
Riverside
White Water, Colorado Desert
Comment
UCD65761
Dasyochloa pulchella
F. W. Peirson
1920-2-16
1546
Riverside
arm of Colorado Desert south of Palm Springs, Garden of Eden.
Comment
UCD91779
Poa secunda subsp. secunda
F. W. Peirson
1919-4-12
1551
Riverside
Tahquitz Camp, Palm Springs, Colorado Desert.
Comment
UCD91780
Poa secunda subsp. secunda
F. W. Peirson
1921-3-22
5368
Riverside
Murray Canyon, Colorado Desert.
396
Comment
UCD91782
Poa secunda subsp. secunda
F. W. Peirson
1933-4-15
10655
Riverside
Whitewater River, 4.5 miles above bridge.
701
Comment
UCR136623
Myosurus minimus subsp. apus
F. W. Peirson
1922-4-29
2945
Riverside
Elsinore Trough, Lake Elsinore, about mudflat south of lake
375
Comment
UCR139384
Lycium andersonii
F. W. Peirson
1922-4-29
1084
Riverside
Perris-Aguanga Region, Aguanga
610
Comment
UCR142549
Parietaria hespera var. hespera
F. W. Peirson
1920-2-15
1714
Riverside
San Jacinto Mtns./Sonoran (Colorado) Desert, Tahquitz Canyon, near Palm Springs
427
Comment
UCR142729
Hornungia procumbens
F. W. Peirson
1922-4-30
1896
Riverside
Peninsular Range, Lancaster Valley, road from Hemet to Temecula
518
Comment
UCR142735
Encelia farinosa
F. W. Peirson
1922-4-9
1331
Riverside
San Jacinto Mountains/ Sonoran (Colorado) Desert, Murray Canyon, Palm Springs region, c. 0.5 mi. above mouth
305
Comment
UCR208133
Cryptantha racemosa
F. W. Peirson
1921-3-23
2377
Riverside
Sonoran (Colorado) Desert, Deep Canyon
335
Comment
UCR208174
Muilla maritima
F. W. Peirson
1922-4-29
2942
Riverside
Perris-Aguanga Region, 2 miles south of Lake Elsinore along boulevard
366
Comment
UCR208881
Astragalus didymocarpus var. dispermus
F. W. Peirson
1922-4-29
2939
Riverside
Peninsular Range, Dripping Spring, near Temecula River
457
Comment
UCR70880
Juncus sphaerocarpus
F. W. Peirson
1922-5-19
3019
Riverside
Menifee Valley
457
Comment
UCR80284
Alopecurus saccatus
F. W. Peirson, P. A. Munz
1922-5-19
s.n.
Riverside
Menifee Valley
457
Comment
CAS-BOT-BC407620
Gilia ochroleuca subsp. exilis
Frank W. Peirson
1919-4-15
921
Riverside
Whitewater Grade above Cabazon
Comment
POM93893
Encelia farinosa var. farinosa
F. W. Peirson
1922-4-9
1331
Riverside
Palm Canyon Region, near Palm Springs.
Comment
POM9932
Cheilanthes viscida
F. W. Peirson
1921-3-22
2371
Riverside
Murray Canyon, south side in canyon
457
Comment
POM9934
Notholaena californica subsp. californica
F. W. Peirson
1920-2-15
s.n.
Riverside
Palm Springs, Tahquitz Camp.
Comment
RSA0004824
Epilobium glaberrimum subsp. glaberrimum
F. W. Peirson
1924-7-28
5013
Riverside
Pine Flats Camp
1799
Comment
RSA0007778
Allium haematochiton
F. W. Peirson
2394
Riverside
4 mi. W of Beaumont.
Comment
RSA0010921
Castilleja densiflora subsp. gracilis
F. W. Peirson
1930-5-10
8776
Riverside
Summit St John's Grade.
762
Comment
RSA0011741
Asplenium vespertinum
F. W. Peirson
1922-4-28
2919
Riverside
Leach Canyon, near Elsinore.
609
Comment
RSA0015892
Erythranthe moschata
F. W. Peirson
1924-7-28
5007
Riverside
Pine Flats Camp
1799
Comment
RSA0016055
Diplacus bigelovii var. bigelovii
F. W. Peirson
1920-2-16
1121
Riverside
Palm Canyon stream below the canyon, Palm Springs. region
Comment
RSA0016300
Gilia ochroleuca subsp. exilis
F. W. Peirson
1928-3-24
7725
Riverside
Temescal Canyon.
305
Comment
RSA0017275
Gilia ochroleuca subsp. exilis
F. W. Peirson
1938-5-30
12413
Riverside
Thomas Mountain, Hemet Valley.
1402
Comment
RSA0018447
Fragaria vesca
F. W. Peirson
1922-5-19
3038
Riverside
San Jacinto River.
1143
Comment
RSA0018750
Nicotiana obtusifolia
F. W. Peirson
1920-2-15
s.n.
Riverside
Murray Canyon near Palm Springs
Comment
RSA0018759
Nicotiana obtusifolia
F. W. Peirson
1917-4-1
1089
Riverside
Andreas Canyon near Palm Springs.
Comment
RSA0018791
Erythranthe guttata
F. W. Peirson
1922-4-8
4720
Riverside
Murray Canyon near Palm Springs.
Comment
RSA0018792
Erythranthe guttata
F. W. Peirson
1917-4-1
1125
Riverside
Andreas Canyon near Palm Springs.
Comment
RSA0018963
Thalictrum fendleri var. fendleri
F. W. Peirson
1924-7-27
4995
Riverside
Deer Springs, San Jacinto Mtns.
2668
Comment
RSA0020492
Delphinium parishii subsp. parishii
F. W. Peirson
1902-4-9
2902
Riverside
Murray Canyon, Palm Springs Region
Comment
RSA0022087
Ribes montigenum
F. W. Peirson
685
Riverside
Summit of Mt. San Jacinto.
3262
Comment
RSA0022920
Eschscholzia parishii
F. W. Peirson
1921-4-13
5324
Riverside
Foot of Deep Canyon, Coachella Valley
274
Comment
RSA0022930
Eschscholzia androuxii
F. W. Peirson
1928-4-23
7888
Riverside
2.5 miles below cottonwood Springs.
Comment
RSA0022931
Eschscholzia androuxii
F. W. Peirson
1926-2-22
s.n.
Riverside
Thousand Palm canyon, near Indio.
Comment
RSA0022975
Eschscholzia androuxii
F. W. Peirson
1927-4-11
7153
Riverside
0.5 mile below Whitewater Bridge, head of Coachella Valley.
Comment
RSA0023471
Tropidocarpum gracile
F. W. Peirson
1918-1
1901
Riverside
Whitewater, head of Coachella Valley.
Comment
RSA0050341
Ceanothus tomentosus
F. W. Peirson
1921-3-19
2364
Riverside
4 miles west of Beaumont on the Redlands Road.
762
Comment
RSA0066506
Orobanche californica subsp. feudgei
Frank W. Peirson
1938-5-30
s.n.
Riverside
Thomas Mountain, Hemet Valley. Slopes south of the Shell Gas station.
1402
Comment
RSA0066528
Orobanche cooperi subsp. cooperi
Frank W. Peirson
1924-12-30
5422
Riverside
Thousand-Palms Canyon, Coachella Valley.
121
Comment
RSA0066539
Orobanche cooperi subsp. cooperi
Frank W. Peirson
1917-4-1
1176
Riverside
Near Palm Springs, Coachella Valley.
Comment
RSA0066613
Harpagonella palmeri
F. W. Peirson
1922-5-19
3029
Riverside
2.5 miles NE of Murrieta on the road to Perris.
Comment
RSA0075624
Cryptantha intermedia var. johnstonii
F. W. Peirson
1918-03
1020
Riverside
Field near Indio.
Comment
RSA0081611
Pyrola aphylla
F. W. Peirson
1924-7-27
4988
Riverside
Dark Canyon, San Jacinto Mts.
1905
Comment
RSA0087147
Centromadia pungens subsp. laevis
F. W. Peirson
1924-6-21
4762
Riverside
Near Temecula.
335
Comment
RSA0091445
Amsinckia tessellata
F. W. Peirson
1919-4-13
995
Riverside
Alkali Canyon, first canyon east of Palm Canyon near Palm Springs.
381
Comment
RSA0094962
Saltugilia australis
F. W. Peirson
1921-3-22
4136
Riverside
Murray Canyon, Colo. Desert.
396
Comment
RSA0094965
Saltugilia australis
F. W. Peirson
1928-4-19
7841
Riverside
Hills north of Elsinore.
457
Comment
RSA0095109
Saltugilia australis
F. W. Peirson
1919-4-13
926
Riverside
Tahquitz Camp, Palm Springs.
Comment
RSA0097301
Spergularia atrosperma
F. W. Peirson
1922-4-29
2953
Riverside
South of Lake Elsinore.
381
Comment
RSA0098430
Spergularia macrotheca var. leucantha
F. W. Peirson
1922-4-30
2958
Riverside
1 mile west of Lakeview, San Jacinto Valley.
427
Comment
RSA0098505
Spergularia marina
F. W. Peirson
1922-5-21
3052
Riverside
Foot of Jack Rabbit Grade, near Moreno.
427
Comment
RSA0098506
Spergularia marina var. tenuis
F. W. Peirson
1922-4-29
1867
Riverside
South of Lake Elsinore.
374
Comment
RSA0117462
Collinsia concolor
F. W. Peirson
1921-5-19
3040
Riverside
Rocky slope not far from floor of Hemet Valley.
1341
Comment
RSA0121585
Eriastrum sapphirinum subsp. dasyanthum
F. W. Peirson
1920-6-22
4474
Riverside
Dripping Spring southeast of Temecula
457
Comment
RSA0121592
Eriastrum sapphirinum subsp. dasyanthum
F. W. Peirson
1920-6-22
4708
Riverside
Temescal Canyon.
305
Comment
RSA0126334
Arabis glaucovalvula
F. W. Peirson
1941-4-9
s.n.
Riverside
At junction of Pinto Basin Rd and road to Cottonwood Spring.
Comment
RSA0126423
Nemacladus longiflorus var. longiflorus
F. W. Peirson
1922-4-28
2920
Riverside
Temescal Canyon.
335
Comment
RSA0127363
Mentzelia longiloba var. longiloba
F. W. Peirson
1932-3-22
9809
Riverside
About 6 miles N of Blythe on Needles Road.
122
Comment
RSA087025
Lupinus densiflorus var. lacteus
F. W. Peirson
1914-04
705
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA087054
Lupinus microcarpus var. densiflorus
F. W. Peirson
1929-5-4
8340
Riverside
2 miles north of Aguanga, South of Hemet.
549
Comment
RSA65025
Silene multinervia
F. W. Peirson
1925-5-20
6013
Riverside
Burned area in chaparral, 1 mile northwest of Dripping Spring, W. Riverside Co.
457
Comment
RSA65838
Sisymbrium altissimum
F. W. Peirson
1922-4-22
5331
Riverside
Field S of Lake Elsinore.
Comment
RSA69703
Mentzelia affinis
F. W. Peirson
1928-3-11
7713
Riverside
8 miles SE of Palm Springs, Riverside County.
Comment
RSA87059
Hordeum murinum subsp. glaucum
F. W. Peirson
1921-3-22
4337
Riverside
Murray Canyon, near Palm Springs
396
Comment
RSA90068
Lotus argophyllus var. argophyllus
F. W. Peirson
1922-4-30
2933
Riverside
Summit of St. John's Grade, south of Hemet
Comment
RSA90073
Lotus argophyllus var. argophyllus
F. W. Peirson
1921-3-22
4092
Riverside
Andreas Canyon, Palm Springs region
Comment
RSA90153
Astragalus didymocarpus var. dispermus
F. W. Peirson
1922-4-29
2939
Riverside
Dripping Spring, Temecula River, southwestern Riverside Co.
457
Comment
RSA90156
Astragalus didymocarpus
F. W. Peirson
1914-1
576
Riverside
Whitewater, east of Cabezon
Comment
RSA90159
Astragalus didymocarpus var. dispermus
F. W. Peirson
1918-03
579
Riverside
Coachella Valley, field near Indio.
Comment
RSA90166
Astragalus lentiginosus var. borreganus
F. W. Peirson
1924-12-29
5402
Riverside
Near Garnet, northeast of Palm Springs
Comment
RSA90202
Alopecurus saccatus
F. W. Peirson
1922-5-19
3021
Riverside
10 miles northeast of Murrieta.
Comment
RSA90215
Astragalus filipes
F. W. Peirson
1922-5-20
3341
Riverside
Hemet Valley, San Jacinto Mountains.
1371
Comment
RSA90230
Astragalus douglasii var. parishii
F. W. Peirson
1922-5-20
3342
Riverside
Hemet Valley, San Jacinto Mountains.
1371
Comment
RSA90289
Lathyrus vestitus subsp. alefeldii
F. W. Peirson
1922-4-28
2946
Riverside
Leach Canyon Near Lake Elsinore.
549
Comment
RSA90292
Lotus grandiflorus
F. W. Peirson
1924-7-27
4981
Riverside
Dark Canyon, San Jacinto Mountains
1707
Comment
RSA90301
Lotus hamatus
F. W. Peirson
1919-4-12
714
Riverside
Along the Tahquitz Creek stream near Palm Springs
Comment
RSA90307
Lotus rigidus
F. W. Peirson
1921-3-23
4084
Riverside
Deep Canyon, north base of Santa Rosa Mts.
335
Comment
RSA90309
Lotus salsuginosus var. brevivexillus
F. W. Peirson
1922-4-9
2873
Riverside
In canyon eastward from lower part of Palm Canyon.
Comment
RSA90331
Lotus argophyllus subsp. decorus
F. W. Peirson
1921-3-19
2367
Riverside
Whitewater Point, head of Coachella Valley
Comment
RSA90339
Lotus wrangelianus
F. W. Peirson
1922-4-29
4081
Riverside
Dripping Spring, Temecula River, southwestern Riverside Co.
457
Comment
RSA90345
Lotus wrangelianus
F. W. Peirson
1930-5-10
8770
Riverside
Roadside, on Hemet Plateau near March Field, between Riverside and Perris.
457
Comment
RSA90355
Lotus nevadensis var. nevadensis
F. W. Peirson
1924-7-27
4989
Riverside
San Jacinto Mountains: Dark Canyon.
2226
Comment
RSA90380
Lotus salsuginosus var. brevivexillus
F. W. Peirson
1927-4-12
7155
Riverside
Painted canyon, near Mecca.
Comment
RSA90388
Lotus strigosus var. tomentellus
F. W. Peirson
1921-4-13
4085
Riverside
Deep Canyon, about 12 miles southeast of Palm Springs.
274
Comment
RSA90395
Lotus salsuginosus var. brevivexillus
F. W. Peirson
1935-4-17
s.n.
Riverside
30 miles north of Blythe.
Comment
RSA90412
Lotus oblongifolius
F. W. Peirson
1924-7-28
5018
Riverside
Pine Flats Camp
1799
Comment
RSA90426
Lotus salsuginosus var. salsuginosus
F. W. Peirson
1928-3-10
7705
Riverside
Hidden Spring, northern Colorado Desert.
Comment
RSA90445
Glycyrrhiza lepidota
F. W. Peirson
1920-6-22
588
Riverside
Santa Ana River.
152
Comment
RSA90638
Astragalus palmeri
F. W. Peirson
1921-3-23
4752
Riverside
Deep Canyon, SE of Palm Springs.
335
Comment
RSA90640
Astragalus palmeri
F. W. Peirson
1921-3-21
4751
Riverside
Gordon Trail, E slope of San Jacinto Mts.
1220
Comment
RSA90691
Gutierrezia sarothrae
F. W. Peirson
1920-6-22
5297
Riverside
Temescal Canyon
335
Comment
RSA90692
Gutierrezia sarothrae
F. W. Peirson
1922-12-26
1217
Riverside
Box Springs Grade near Riverside.
Comment
RSA90703
Astragalus nuttallianus var. cedrosensis
F. W. Peirson
1922-4-9
584
Riverside
Murray Canyon, near Palm Springs
Comment
RSA90738
Astragalus douglasii var. parishii
F. W. Peirson
1922-4-29
2955
Riverside
In the wash along Temecula River, Aguanga, Riverside.
579
Comment
RSA90739
Astragalus pomonensis
F. W. Peirson
1920-6-22
7696
Riverside
Dripping Springs, Temecula River
457
Comment
RSA90742
Astragalus pomonensis
F. W. Peirson
1922-4-29
2957
Riverside
Roadside W of Lake Elsinore.
381
Comment
RSA90749
Astragalus pachypus var. jaegeri
F. W. Peirson
1922-4-29
2950
Riverside
1 mile or more south of Dripping Springs, Temecula River
518
Comment
RSA90750
Astragalus pachypus var. jaegeri
F. W. Peirson
1920-6-23
2205
Riverside
Aguanga
609
Comment
RSA90892
Carex sartwelliana
F. W. Peirson
1924-7-28
5015
Riverside
Pine Flats Camp
1799
Comment
RSA90953
Erigeron divergens
F. W. Peirson
1921-3-22
2365
Riverside
Andreas Canyon, Palm Springs region
Comment
RSA91031
Calochortus weedii var. weedii
Frank W. Peirson
1920-6-22
2171
Riverside
Dripping Springs, Temecula River
457
Comment
RSA91079
Trifolium depauperatum var. truncatum
F. W. Peirson
1922-4-29
2938
Riverside
Mud flat south of Elsinore
Comment
RSA91118
Trifolium monanthum subsp. grantianum
F. W. Peirson
1924-7-28
5016
Riverside
Pine flats Camp, San Jacinto Mts.
1799
Comment
RSA91131
Trifolium microcephalum
F. W. Peirson
1930-5-10
8774
Riverside
Summit of St. Johns Grade south of Hemet.
762
Comment
RSA91176
Isocoma acradenia var. eremophila
F. W. Peirson
1922-12-28
4740
Riverside
Andreas Canyon, east base of San Jacinto Mts.
244
Comment
RSA91190
Lupinus hyacinthinus
F. W. Peirson
1938-5-30
12412
Riverside
Thomas Mountain, Hemet Valley.
1402
Comment
RSA91199
Lupinus excubitus var. hallii
F. W. Peirson
1922-5-18
3063
Riverside
Temescal Canyon, western Riverside County
274
Comment
RSA91205
Lupinus excubitus var. hallii
F. W. Peirson
1929-5-4
8339
Riverside
2 miles north of Aguanga, South of Hemet.
549
Comment
RSA91207
Lupinus excubitus var. hallii
F. W. Peirson
1922-4-28
2947
Riverside
Leach Canyon Near Lake Elsinore.
549
Comment
RSA91216
Krameria grayi
F. W. Peirson
1934-04
2034
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA91231
Alnus rhombifolia
F. W. Peirson
1928-3-10
7698
Riverside
along irrigation ditch, Snow Creek Auto Camp at Whitewater, head of Coachella Valley.
Comment
RSA91359
Amorpha fruticosa
F. W. Peirson
1919-4-12
702
Riverside
Palm Canyon, near Palm springs.
Comment
RSA91372
Psorothamnus emoryi
F. W. Peirson
1924-12-30
5417
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
RSA91374
Psorothamnus emoryi
F. W. Peirson
1921-4-12
571
Riverside
Near Indian Wells.
Comment
RSA91375
Psorothamnus emoryi
F. W. Peirson
1939-11-25
s.n.
Riverside
Foot of mountain near Painted Canyon.
Comment
RSA91380
Linum lewisii
F. W. Peirson
1922-5-20
3036
Riverside
North side of Hemet Valley, San Jacinto Mts.
1372
Comment
RSA91385
Hesperolinon micranthum
F. W. Peirson
1922-5-19
3023
Riverside
2.5 miles NE of Murrieta
381
Comment
RSA91406
Trifolium albopurpureum
F. W. Peirson
1922-4-29
4069
Riverside
South of Temecula on Temecula River, Riverside Co., California
427
Comment
RSA91415
Trifolium albopurpureum
F. W. Peirson
1914-04
549
Riverside
Beaumont, San Gorgonio Pass.
Comment
RSA91429
Marina parryi
F. W. Peirson
1921-3-23
2383
Riverside
Deep Canyon Wash, 12 miles southeast of Palm Spring
229
Comment
RSA91430
Dalea mollis
F. W. Peirson
1932-3-22
9811
Riverside
20 miles North of Blythe on the road to Needles, Eastern Riverside.
152
Comment
RSA91431
Dalea mollissima
F. W. Peirson
1916-04
570
Riverside
Region of Palm Springs.
Comment
RSA91432
Dalea mollissima
F. W. Peirson
1922-4-11
4428
Riverside
Deep Canyon Wash, about 12 miles SE of Palm Springs
244
Comment
RSA91438
Psorothamnus schottii
F. W. Peirson
1921-4-13
566
Riverside
Deep Canyon Wash, about 12 miles SE of Palm Springs.
152
Comment
RSA91439
Psorothamnus spinosus
F. W. Peirson
1921-4-13
568
Riverside
Deep Canyon Wash, about 12 miles SE of Palm Springs.
152
Comment
RSA91514
Poa secunda
F. W. Peirson
1921-3-22
5368
Riverside
Murray Canyon, near Palm Springs
396
Comment
RSA91516
Poa secunda
F. W. Peirson
1933-4-15
1055
Riverside
Whitewater Canyon, 4 miles above bridge of Hwy from Banning to Indio,
701
Comment
RSA91517
Poa secunda
F. W. Peirson
1919-4-12
1551
Riverside
Tahquitz canyon near Palm Springs.
Comment
RSA91537
Trifolium willdenovii
F. W. Peirson
1919-4-14
559
Riverside
Murray Canyon, Palm Springs Region.
Comment
RSA91542
Dasyochloa pulchella
F. W. Peirson
1928-3-10
7711
Riverside
Small side canyon in which Hidden Spring is located, northeast of Mecca
Comment
RSA91543
Dasyochloa pulchella
F. W. Peirson
1920-2-16
1546
Riverside
South of Palm Springs, arm of Colorado Desert
Comment
RSA91579
Schoenoplectus maritimus
F. W. Peirson
1922-4-29
5376
Riverside
Roadside ditch, Temecula, Riverside Co., California.
Comment
RSA91580
Schoenoplectus maritimus
F. W. Peirson
1918-03
1618
Riverside
Mecca.
Comment
RSA91692
Bromus rubens
F. W. Peirson
1918-03
1557
Riverside
Palm Springs
Comment
RSA91697
Gnaphalium palustre
F. W. Peirson
1930-5-10
8769
Riverside
Roadside, on Hemet Plateau near March Field, between Riverside and Perris.
457
Comment
RSA91699
Gnaphalium palustre
F. W. Peirson
1924-7-29
5030
Riverside
Banning to Idyllwild road, San Jacinto Mountains.
1570
Comment
RSA91746
Muhlenbergia rigens
F. W. Peirson
1921-3-23
2373
Riverside
Deep Canyon south of Coachella Valley
335
Comment
RSA91784
Ericameria linearifolia
F. W. Peirson
1921-3-21
2380
Riverside
Gordon trail from Andreas Canyon to San Jacinto Peak.
915
Comment
RSA91826
Cenchrus echinatus
F. W. Peirson
1937-11-27
12246
Riverside
La Quinta, Coachella Valley.
0
Comment
RSA91911
Phleum alpinum
F. W. Peirson
1924-7-27
4996
Riverside
Deer Springs, San Jacinto Mountains
2668
Comment
RSA91917
Phragmites australis
F. W. Peirson
1924-12-30
5407
Riverside
Thousand Palms Canyon, Coachella Valley.
122
Comment
RSA91958
Glyceria striata
F. W. Peirson
1924-7-27
4985
Riverside
Along creek in Dark Canyon,
1829
Comment
RSA91979
Pleuraphis rigida
F. W. Peirson
1921-3-22
2369
Riverside
Murray Canyon, near Palm Springs
396
Comment
RSA91986
Achnatherum hymenoides
F. W. Peirson
1921-3-24
4322
Riverside
Whitewater at head of Coachella Valley
Comment
RSA92084
Eleocharis bella
F. W. Peirson
1921-5-20
3028
Riverside
About 1 mile below Kenworthy, Hemet Valley
1387
Comment
RSA92089
Eleocharis geniculata
F. W. Peirson
1924-12-30
5408
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
RSA92090
Eleocharis geniculata
F. W. Peirson
1921-3-20
2923
Riverside
Palm Canyon, east base of San Jacinto Mountains
305
Comment Read comments Oct 1 2011
RSA92101
Cyperus laevigatus
F. W. Peirson
1924-12-30
5405
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
RSA92107
Cyperus squarrosus
F. W. Peirson
1924-7-29
5031
Riverside
Banning to Idyllwild road, San Jacinto Mountains.
1570
Comment
RSA92130
Eleocharis palustris
F. W. Peirson
1922-4-29
1619
Riverside
Temecula River, southwestern Riverside County
427
Comment
RSA92140
Schoenoplectus americanus
F. W. Peirson
1921-3-20
2848
Riverside
Palm Canyon, Colorado Desert.
305
Comment
RSA92142
Schoenoplectus americanus
F. W. Peirson
1924-12-30
5406
Riverside
Thousand-Palms Canyon, north side of Coachella Valley.
122
Comment
RSA92197
Hymenoxys odorata
F. W. Peirson
1935-4-17
11468
Riverside
Abundant on roadsides for several miles, river bottom lands, 20-22 miles S of Blythe.
Comment
RSA92212
Palafoxia arida var. arida
F. W. Peirson
1914-04
1381
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA92213
Palafoxia arida var. arida
F. W. Peirson
1918-03
4310
Riverside
Field near Indio.
Comment
RSA92216
Palafoxia arida var. arida
F. W. Peirson
1924-12-30
5426
Riverside
Thousand Palms Canyon, Coachella Valley.
122
Comment
RSA92219
Pectis papposa
F. W. Peirson
1937-11-27
12245
Riverside
La Quinta, Coachella Valley.
0
Comment
RSA92220
Perityle emoryi
F. W. Peirson
1369
Riverside
Andreas Canyon near Palm Springs.
274
Comment
RSA92256
Layia platyglossa subsp. campestris
F. W. Peirson
1918-03
1362
Riverside
Cabaon, Whitewater, grade, E of Banning.
549
Comment
RSA92370
Orcuttia californica
F. W. Peirson
1922-5-19
3020
Riverside
In Menifee Valley, 10 miles northeast of Murrieta
427
Comment Read comments Apr 3 2011
RSA92380
Psilocarphus brevissimus
F. W. Peirson
1922-4-29
2949
Riverside
South of Lake Elsinore.
381
Comment
RSA92387
Eriophyllum multicaule
F. W. Peirson
1922-4-29
2927
Riverside
Road to Leach Canyon 1 mile N of Lake Elsinore.
Comment
RSA92388
Eriophyllum multicaule
F. W. Peirson
1914-04
1384
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA92402
Bebbia juncea
F. W. Peirson
1924-6-21
4756
Riverside
Temescal Canyon, near Elsinore
305
Comment
RSA92403
Bebbia juncea
F. W. Peirson
1917-4-1
1323
Riverside
Palm Springs
Comment
RSA92436
Poa bigelovii
F. W. Peirson
1921-3-22
2392
Riverside
Murray Canyon near Palm Springs.
457
Comment
RSA92446
Panicum urvilleanum
F. W. Peirson
1928-3-10
7703
Riverside
Just east of Whitewater Bridge, near Whitewater, at head of Coachella Valley.
Comment
RSA92505
Stylocline gnaphaloides
F. W. Peirson
1930-5-10
8775
Riverside
Summit of St. Johns Grade, south of Hemet.
762
Comment
RSA92511
Eriophyllum multicaule
F. W. Peirson
1928-4-19
7842
Riverside
Hills N of Elsinore
457
Comment Read comments Oct 23 2011
RSA92525
Bahiopsis parishii
F. W. Peirson
1922-4-9
4148
Riverside
Murray Canyon, near Palm Springs
Comment
RSA92609
Salix exigua
F. W. Peirson
1920-6-22
4282
Riverside
Santa Ana River.
152
Comment
RSA92622
Salix lasiolepis
F. W. Peirson
1922-6-29
5437
Riverside
Tahquitz Valley.
2134
Comment
RSA92625
Eriophyllum confertiflorum
F. W. Peirson
1924-7-29
5023
Riverside
Road between Banning and Idyllwild.
1767
Comment
RSA92653
Salix exigua
F. W. Peirson
1933-4-15
10650
Riverside
Whitewater River, 4.5 miles above highway from Banning to Indio.
701
Comment
RSA92654
Salix lasiolepis
F. W. Peirson
1933-4-14
10648
Riverside
Road between Banning and Idyllwild.
1524
Comment
RSA92695
Salix exigua
F. W. Peirson
1924-12-30
5410
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
RSA92696
Salix gooddingii
F. W. Peirson
1918-03
719
Riverside
Near Mecca and the Salton Sea.
Comment
RSA92703
Salix laevigata
F. W. Peirson
1928-3-10
7700
Riverside
along irrigation ditch, Snow Creek Auto Camp at Whitewater, head of Coachella Valley.
Comment
RSA92873
Baileya pauciradiata
F. W. Peirson
1921-4-12
2775
Riverside
Near Indian Wells.
Comment
RSA92874
Baileya pauciradiata
F. W. Peirson
1926-2-22
6503
Riverside
Thousand Palm Canyon, Coachella Valley
122
Comment
RSA92883
Populus fremontii
F. W. Peirson
1928-3-10
7699
Riverside
along irrigation ditch, Snow Creek Auto Camp at Whitewater, head of Coachella Valley.
Comment
RSA92894
Lasthenia gracilis
F. W. Peirson
1922-4-29
4520
Riverside
Field S of Lake Elsinore
375
Comment
RSA92915
Lasthenia gracilis
F. W. Peirson
1918-03
1374
Riverside
Whitewater Grade, nw. corner of Colorado Desert.
Comment
RSA92991
Lasthenia coronaria
F. W. Peirson
1922-5-19
4519
Riverside
5 miles NE of Murrieta
457
Comment
RSA92992
Lasthenia coronaria
F. W. Peirson
1919-4-15
1373
Riverside
Whitewater Grade east of Banning
610
Comment
RSA93014
Lasthenia microglossa
F. W. Peirson
1919-4-14
1376
Riverside
Shelter of high wall of rock, Murray Canyon near Palm Springs.
488
Comment
RSA93084
Pluchea sericea
F. W. Peirson
1918-03
1298
Riverside
Palm Springs.
Comment
RSA93161
Baccharis sergiloides
F. W. Peirson
1928-9-6
8205
Riverside
Morongo Canyon, eastern end of San Bernardino Mts.
Comment
RSA93169
Baccharis salicifolia
F. W. Peirson
1920-2-15
2316
Riverside
Palm Springs, Tahquitz Camp.
Comment
RSA93170
Baccharis salicifolia
F. W. Peirson
1933-4-15
10654
Riverside
Whitewaer River, 4.5 miles above bridge of Indio Hwy
701
Comment
RSA93199
Baccharis salicifolia
F. W. Peirson
1918-03
2231
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA93201
Baccharis salicifolia
F. W. Peirson
1924-12-30
5424
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
RSA93205
Baccharis salicifolia
F. W. Peirson
1920-6-23
8663
Riverside
Temecula River.
854
Comment Read comments Mar 15 2017
RSA93215
Pentachaeta aurea
F. W. Peirson
1938-5-30
s.n.
Riverside
Thomas Mountain, Hemet Valley.
1402
Comment
RSA93216
Corethrogyne filaginifolia
F. W. Peirson
1924-7-28
5017
Riverside
Pine Flats Camp
1799
Comment
RSA93230
Chrysothamnus paniculatus
F. W. Peirson
1939-11-26
12901
Riverside
29 Palms about 7 miles from Blvd
Comment Read comments Apr 24 2013
RSA93245
Chrysothamnus paniculatus
F. W. Peirson
1920-12-29
2334
Riverside
1.5 miles E of Whitewater Station near Point of Rocks
305
Comment
RSA93246
Chrysothamnus teretifolius
F. W. Peirson
1937-10-20
12363
Riverside
Santa Rosa Mts
1829
Comment Read comments Dec 17 2011
RSA93251
Ericameria cuneata var. spathulata
F. W. Peirson
1928-11-30
8214
Riverside
about 1 mile north of Cottonwood Spring, northeast of Mecca.
Comment
RSA93281
Pentachaeta aurea
F. W. Peirson
1922-5-19
3037
Riverside
San Jacinto River
1143
Comment
RSA93325
Xylorhiza cognata
F. W. Peirson
1927-4-13
7258
Riverside
Painted Canyon, near Mecca
Comment
RSA93327
Xylorhiza cognata
F. W. Peirson
1927-4-12
7159
Riverside
Painted Canyon, near Mecca
Comment
RSA93330
Downingia cuspidata
F. W. Peirson
1922-4-29
2925
Riverside
South of Lake Elsinore.
381
Comment
RSA93354
Machaeranthera asteroides
F. W. Peirson
1935-4-17
11471
Riverside
Eastern part of Blythe, colorado Desert,
Comment
RSA93680
Filago californica
F. W. Peirson
1921-3-22
5277
Riverside
Murray Canyon, south side in canyon
457
Comment
RSA93686
Ambrosia psilostachya
F. W. Peirson
1920-12-29
5276
Riverside
Murray Canyon near Palm Springs.
Comment
RSA93715
Brickellia arguta
F. W. Peirson
1919-4-13
1214
Riverside
Along the Tahquitz creek, East of Palm Springs, Riverside.
Comment
RSA93718
Brickellia arguta
F. W. Peirson
1928-4-24
7900
Riverside
Below Cottonwood Spring, northern edge of Colorado Desert.
Comment
RSA93727
Pleurocoronis pluriseta
F. W. Peirson
1927-4-12
7173
Riverside
Painted Canyon, near Mecca
Comment
RSA93730
Acamptopappus sphaerocephalus var. sphaerocephalus
F. W. Peirson
1927-4-11
7154
Riverside
0.5 mile below Whitewater Bridge, head of Coachella Valley.
Comment
RSA93765
Geraea canescens
F. W. Peirson
1918-03
1333
Riverside
Irrigated field near Indio.
Comment
RSA93767
Geraea canescens
F. W. Peirson
1921-3-23
2782
Riverside
10 miles SE of Palm Spring
Comment Read comments Apr 21 2011
RSA93769
Helianthus niveus subsp. canescens
F. W. Peirson
1918-03
1329
Riverside
Irrigated field near Indio.
Comment
RSA93778
Lobelia cardinalis subsp. graminea
F. W. Peirson
1922-12-27
8649
Riverside
About 1 miles up in Andreas Canyon, Palm Springs region.
Comment
RSA93812
Chaenactis fremontii
F. W. Peirson
1926-2-22
6501
Riverside
On talus slope east of bridge over Whitewater River, head of Coachella Valley
Comment
RSA93827
Chaenactis carphoclinia var. carphoclinia
F. W. Peirson
1926-2-22
6504
Riverside
Thousand-Palms Canyon.
152
Comment
RSA93829
Chaenactis carphoclinia var. carphoclinia
F. W. Peirson
1922-4-11
2858
Riverside
Deep Canyon Wash, Coachella Valley
244
Comment
RSA93897
Rhus trilobata var. pilosissima
F. W. Peirson
1928-3-24
7726
Riverside
1-2 miles north of Dripping Springs, grade on Temecula River, sw. Riverside County.
426
Comment
RSA93922
Dicoria canescens
F. W. Peirson
1924-12-30
5425
Riverside
Thousand-Palms Canyon, edge of Coachella Valley.
122
Comment
RSA93923
Dicoria canescens
F. W. Peirson
1920-12-29
2333
Riverside
1.5 miles east of Whitewater Station, head of Coachella Valley.
Comment
RSA93928
Ambrosia dumosa
F. W. Peirson
1920-2-16
1319
Riverside
Colorado Desert. Garden of Eden east of Palm Springs.
Comment
RSA93954
Hymenoclea monogyra
F. W. Peirson
1919-4-12
1317
Riverside
Tahquitz canyon near Palm Springs.
Comment
RSA93957
Hymenoclea salsola
F. W. Peirson
1914-04
2494
Riverside
Whitewater at head of Coachella Valley.
Comment
RSA94066
Hemizonia kelloggii
F. W. Peirson
1924-6-21
4757
Riverside
Temescal Canyon.
290
Comment
RSA94085
Psathyrotes ramosissima
F. W. Peirson
1927-4-12
7165
Riverside
Forks of Painted Canyon, near Mecca
Comment
RSA94086
Psathyrotes ramosissima
F. W. Peirson
1918-03
1426
Riverside
Between Palm Springs and Indio.
Comment Read comments Feb 22 2009
RSA94099
Hemizonia kelloggii
F. W. Peirson
1925-5-20
6011
Riverside
Aguanga.
610
Comment
RSA94106
Peucephyllum schottii
F. W. Peirson
1919-4-13
4737
Riverside
First canyon S of Palm Canyon near Palm Springs.
Comment
RSA94107
Peucephyllum schottii
F. W. Peirson
1924-12-30
5423
Riverside
Thousand Palms Canyon, Coachella Valley.
122
Comment
RSA94108
Peucephyllum schottii
F. W. Peirson
1921-3-23
2753
Riverside
Deep Canyon, north base of Santa Rosa Mts.
335
Comment
RSA94110
Peucephyllum schottii
F. W. Peirson
1930-3-29
8690
Riverside
Colorado Desert. Painted Canyon, near Mecca.
Comment
RSA94111
Peucephyllum schottii
F. W. Peirson
1918-03
1244
Riverside
SE side of desert embankment at Palm Springs and almost opposite Andreas Canyon.
Comment
RSA94115
Brickellia incana
F. W. Peirson
1928-4-23
7889
Riverside
2.5 miles below cottonwood Springs, Riverside County
Comment
RSA94118
Brickellia desertorum
F. W. Peirson
1920-12-29
2336
Riverside
Andreas Canyon near Palm Springs
244
Comment
RSA94162A
Monoptilon bellidiforme
F. W. Peirson
1928-4-24
7899
Riverside
Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert.
Comment
RSA94162B
Monoptilon bellioides
F. W. Peirson
1928-4-24
7899
Riverside
Below Cottonwood Springs, Eagle Mountains. Northern Colorado Desert.
Comment
RSA94164
Monoptilon bellioides
F. W. Peirson
1920-2-15
1383
Riverside
Neaar Palm Springs, Coachella Valley.
Comment
RSA94166
Monoptilon bellioides
F. W. Peirson
1926-1-31
6491
Riverside
Dos Palmas [Spring], Colorado Desert.
Comment
RSA94168
Monoptilon bellioides
F. W. Peirson
1922-4-11
2868
Riverside
Deep Canyon Wash, southwest of Indio
244
Comment
RSA94416
Eriophyllum ambiguum var. paleaceum
F. W. Peirson
1933-4-13
10638
Riverside
Road from Deep Canyon to Idyllwild.
610
Comment
RSA94418
Eriophyllum ambiguum var. paleaceum
F. W. Peirson
1920-2-16
1387
Riverside
Murray Canyon, Palm Springs region.
274
Comment
RSA94533
Artemisia californica
F. W. Peirson
1920-12-29
1456
Riverside
1.5 miles east of whitewater, head of Coachella Valley.
305
Comment
RSA94534
Artemisia californica
F. W. Peirson
1922-12-27
3338
Riverside
Between the forks of Andreas Canyon, east base of Mt. San Jacinto.
610
Comment
RSA94615
Trichoptilium incisum
F. W. Peirson
1919-4-1
1408
Riverside
Palm Springs.
Comment
RSA94628
Psilostrophe cooperi
F. W. Peirson
1928-4-25
7916
Riverside
On plateau west and northwest of Cottonwood Spring, northern Colorado Desert
Comment
RSA94639
Atrichoseris platyphylla
F. W. Peirson
1927-4-12
7158
Riverside
Painted Canyon, near Mecca
Comment
RSA94663
Senecio mohavensis
F. W. Peirson
1928-3-10
7707
Riverside
Along rock walls of canyon at Hidden Springs, northeast of Mecca.
Comment
RSA94664
Senecio mohavensis
F. W. Peirson
1921-3-22
2378
Riverside
Murray Canyon near Palm Springs.
457
Comment
RSA94665
Senecio mohavensis
F. W. Peirson
1927-4-12
7156
Riverside
In Painted Canyon near Mecca.
Comment
RSA94668
Senecio douglasii var. monoensis
F. W. Peirson
1928-4-23
7890
Riverside
2.5 miles below Cottonwood Spring, northern Colorado Desert
Comment
RSA94830
Trixis californica
F. W. Peirson
1914-4-1
s.n.
Riverside
Whitewater at head of Coachella Valley
Comment
RSA94930
Tetradymia comosa
F. W. Peirson
1920-6-22
1428
Riverside
Temescal Canyon.
305
Comment
RSA94960
Malacothrix stebbinsii
F. W. Peirson
1921-3-22
2715
Riverside
Murray Canyon, south side in canyon
457
Comment
RSA94968
Malacothrix californica
F. W. Peirson
1914-04
1478
Riverside
Beaumont
Comment
RSA94984
Lepidospartum squamatum
F. W. Peirson
1920-12-29
5267
Riverside
1.5 miles east of Whitewater Station, head of Coachella Valley.
Comment
RSA95026
Malacothrix coulteri
F. W. Peirson
1922-4-29
2959
Riverside
Roadside 2 miles south of Elsinore
Comment
RSA95060
Rafinesquia neomexicana
F. W. Peirson
1914-04
1476
Riverside
Whitewater at head of Coachella Valley.
Comment Read comments Apr 30 2011
RSA95061
Rafinesquia neomexicana
F. W. Peirson
1920-2-16
2762
Riverside
Garden of Eden at Palm Springs
Comment
RSA95082
Microseris lindleyi
F. W. Peirson
1921-3-22
2381
Riverside
Murray Canyon, south side in canyon
457
Comment
RSA95084
Microseris douglasii subsp. douglasii
F. W. Peirson
1922-4-30
2952
Riverside
Plains one mile west of Lakeview, San Jacinto Valley
427
Comment
RSA95111
Agoseris heterophylla var. heterophylla
F. W. Peirson
1922-5-20
3045
Riverside
Hemet Valley, San Jacinto Mountains.
1371
Comment
RSA95184
Atrichoseris platyphylla
F. W. Peirson
1926-1-31
6482
Riverside
Dos Palmas Spring, NE of Mecca
Comment
RSA95238
Microseris heterocarpa
F. W. Peirson
1922-4-29
2951
Riverside
South of Lake Elsinore.
381
Comment
RSA95242
Camissonia boothii subsp. condensata
F. W. Peirson
1925-12-30
5429
Riverside
Colorado Desert. Thousand Palms Canyon.
Comment
RSA95299
Hibiscus denudatus
F. W. Peirson
1922-4-9
2900
Riverside
Palm Canyon Region, near Palm Springs.
Comment
RSA95301
Sphaeralcea ambigua subsp. rosacea
F. W. Peirson
1921-3-22
9599
Riverside
Murray Canyon, Near Palm Springs.
366
Comment
RSA95302
Sphaeralcea ambigua subsp. rosacea
F. W. Peirson
1921-3-20
s.n.
Riverside
Palm Canyon near Palm Springs
Comment
RSA95320
Sphaeralcea ambigua subsp. ambigua
F. W. Peirson
1917-4-1
2065
Riverside
Andreas Canyon near Palm Springs.
Comment
RSA95324
Malacothamnus densiflorus var. densiflorus
F. W. Peirson
1926-5-2
6724
Riverside
Grade north of Dripping Spring, Temecula River, southwestern Riverside Co.
Comment
RSA95353
Ceanothus oliganthus
F. W. Peirson
1931-5-30
9380
Riverside
Along Glen Ivy Trail to Santiago Peak, Santa Ana Mts.
762
Comment Read comments Oct 1 2011
RSA95365
Sphaeralcea ambigua subsp. ambigua
F. W. Peirson
1919-4-13
777
Riverside
Murray Canyon, Palm Springs Region.
457
Comment
RSA95371
Sphaeralcea ambigua subsp. ambigua
F. W. Peirson
1922-4-11
4106
Riverside
Deep Canyon Wash, southwest of Indio
244
Comment
RSA95373
Sidalcea malviflora subsp. sparsifolia
F. W. Peirson
1922-5-20
4309
Riverside
Hemet Valley, San Jacinto Mountains.
1372
Comment
RSA95377
Sidalcea malviflora subsp. sparsifolia
F. W. Peirson
1914-04
2058
Riverside
Beaumont, San Gorgonio Pass.
Comment
RSA97151
Lomatium dasycarpum subsp. dasycarpum
F. W. Peirson
1922-5-19
4461
Riverside
3 miles northeast of Murrieta.
Comment
RSA97228
Garrya flavescens var. pallida
F. W. Peirson
1921-3-21
4464
Riverside
Gordon trail from Andreas Canyon, San Jacinto Mts.
1524
Comment
RSA97291
Garrya flavescens var. pallida
F. W. Peirson
1933-4-13
10644
Riverside
1-2 miles SE of Palm Creek crossing, on road from Deep Canyon to Idyllwild, Santa Rosa Mts.
1524
Comment
RSA97358
Bowlesia incana
F. W. Peirson
1922-4-30
2954
Riverside
Lancaster Valley about 1.5 miles from the Temecula River on road to Hemet
518
Comment
RSA97373
Sanicula tuberosa
F. W. Peirson
1922-4-29
4053
Riverside
Leach Canyon, near Lake Elsinore, Santa Ana Mts.
610
Comment
RSA97396
Apiastrum angustifolium
F. W. Peirson
1922-5-19
5430
Riverside
5 miles northeast of Murrieta.
Comment
RSA97436
Lomatium vaginatum
F. W. Peirson
1922-4-29
2932
Riverside
South of Lake Elsinore.
381
Comment Read comments Dec 8 2013
RSA97437
Phoradendron californicum
F. W. Peirson
1924-12-30
5411
Riverside
Thousand-Palms Canyon, Colorado Desert
122
Comment
RSA97448
Phoradendron pauciflorum
F. W. Peirson
1924-7-27
4992
Riverside
on Abies concolor; Dark Canyon.
2515
Comment
RSA97450
Phoradendron villosum
F. W. Peirson
1924-7-28
5009
Riverside
Pine Flats Camp
1799
Comment
SEINET10458956
Triodanis biflora
Frank W. Peirson
Peirson 6723
Riverside
DRIPPING SPRING
Comment
SEINET10460870
Nemacladus sigmoideus
Frank W. Peirson
Peirson 7913
Riverside
n Colorado Desert
Comment
SEINET10461130
Nemacladus rubescens
Frank W. Peirson
1926-1-31
Peirson 6486
Riverside
About 2 miles from above station on Mecca Road
Comment