Click on column header to sort data (* sorts by family); click in leftmost checkbox to select record. CCH Help Page .
Turn on yellow flags to show possible range discrepancies.
Read more ...
?
Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
UC912528
Abronia
Herbert L. Mason
1924-11-16
1152
Marin
Stinson beach, Willow Camp
Comment
UC912625
Abronia villosa
H. L. Mason
1928-3-10
4193
Riverside
Whitewater River
Comment
UC964730
Acanthomintha lanceolata
Herbert L. Mason
1940-5-5
12284
San Benito
6 mi se of Pacines (and 2.4 mi e of Emmet School, Panoche Pass); Inner South Coast Ranges, San Carlos Range, Panoche Pass
609
Comment
RSA0076521
Acanthomintha lanceolata
H. L. Mason
1940-5-5
12284
San Benito
Panoche Pass ca. 6 miles southeast of Pacines and 2.4 miles east of Emmet School, San Carlos Range.
610
Comment
SEINET12344129
Acanthus mollis
E. Mason, Mason, R. E.
1946-1
s.n.
Unknown
Oakland
Comment
UCD128336
Achillea millefolium
Steve Mason; Pam Rector
1993-4-16
4
Orange
Laguna Niguel, Sea View Park Trail, about 25 yards up trail on left side, on border between disturbed terrain and coastal sage scrub. Near housing development overlooking canyon and coastline.
182
Comment
UC912589
Achyrachaena mollis
Herbert L. Mason
1926-4-10
2802
Alameda
Cedar Mountain (via Arroyo Mocho Canyon); Arroyo Mocho Canyon, Cedar Mountain
Comment
SEINET10881474
Aconogonon davisiae
Herbert L. Mason
1940-7-30
Mason 12353
Alpine
Hills N of Carson Pass.
2682
Comment
UC571024
Acourtia microcephala
Herbert L. Mason
1923-6-17
471
Ventura
bluffs along coast Ventura
Comment
CAS-BOT-BC29260
Acroptilon repens
Herbert L. Mason
1942-7-8
12553
Stanislaus
2 miles east of Newman, at junction of Patterson-Stevinson roads
Comment
UCD128509
Acroptilon repens
Herbert L. Mason
1942-7-8
12553
Stanislaus
two miles east of Newman, at junction of Patterson-Stevinson roads.
Comment
UC635417
Actaea rubra
H. L. Mason
1927-7-31
4006
Santa Cruz
Santa Cruz Mts., Mt. Herman
Comment
UC555433
Adenostoma fasciculatum
H. L. Mason
1927-9-25
4107
Santa Barbara
hills about Pelican Bay; Santa Cruz Isl.
Comment
UC912686
Adiantum jordanii
Herbert L. Mason
1936-3-21
11035
Mariposa
4 mi n Coulterville
Comment
UC635203
Aesculus californica
H. L. Mason
1929-6-2
5358
Kern
30 mi from Bakersfield; Tehachapi Mountains, Tejon Pass
Comment
UC1077101
Ageratina occidentalis
Herbert L. Mason
1938-7-25
12008
Tuolumne
s base Mahan Peak; Yosemite National Park, Jack Main Canyon, Deep Lake
2438
Comment
UC565497
Agoseris heterophylla var. heterophylla
Herbert L. Mason
1925-7-10
2155
Tuolumne
Hog Ranch
Comment
CAS-BOT-BC13135
Agoseris hirsuta
Herbert L. Mason
1917-4-28
s.n.
Marin
Mill Valley
Comment
UC565509
Agoseris hirsuta
H. L. Mason
1929-3-2
5034
Monterey
20 mi s, along Big Sur Road Carmel; Big Sur Road
Comment
UC635120
Agoseris hirsuta
H. L. Mason
1928-3-24
4263 a
Marin
Millerton; Tomales Bay
Comment
UC1110539
Agrostis exarata
Herbert L. Mason
1939-8-3
12206
Placer
7 mi nw Tahoe City (Squaw Valley); Squaw Valley
1889
Comment
UC965490
Agrostis idahoensis
Herbert L. Mason
1952-8-16
14486 b
Nevada
meadow opposite University of California, Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UCD53045
Agrostis microphylla
Herbert L. Mason
1946-5-18
12763
Mendocino
Clearing in Pygmy Forest, near Fort Bragg.
Comment
UC1100123
Agrostis scabra
Herbert L. Mason
1948-9-5
13678
Mono
island in Mono Lake Mono Lake
Comment
UC965489
Agrostis scabra
Herbert L. Mason
1952-8-16
1448 a
Nevada
meadow opposite Univ. of Calif. Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC912585
Agrostis viridis
Herbert L. Mason
1929-5-24
3232
Alameda
University of Calif. Campus Berkeley
Comment
UC1108514
Aira caryophyllea
H. L. Mason
1921-5-29
San Mateo
roadside near Arroyo de los Frijoles
Comment
UCD117513
Aliciella subacaulis
Herbert L. Mason
1941-7-13
12485
Mono
North of Mono Lake along road to Bodie.
Comment
UCD137895
Alisma gramineum
Herbert L. Mason
1955-8-13
14653 B
Modoc
southwest side of Goose Lake.
Comment
UCD137905
Alisma gramineum
Herbert L. Mason
1955-8-13
14651 A
Modoc
southwest side of Goose Lake.
Comment
UC985647
Alisma lanceolatum
Herbert L. Mason and Verne Grant
1946-9-5
13119
Colusa
1.6 mi w Williams (road to Lake County)
Comment
CAS-BOT-BC445317
Alisma lanceolatum
Herbert L. Mason; Verne Grant
1946-9-5
13119
Colusa
Road to Lake County, 1.6 miles west of Williams
Comment
UCD137995
Alisma triviale
Herbert L. Mason; Lawrence W. Reinecke
1937-7-22
11610
Tulare
Swamp Lake, west of Hetch Hetchy, Yosemite National Park.
Comment
POM313034
Alisma triviale
H. L. Mason, Verne Grant
1946-9-5
13119
Colusa
Road to Lake Co, 1.6 miles W of Williams.
Comment
UCD137997
Alisma triviale
Herbert L. Mason
1955-8-13
14653 C
Modoc
southwest side of Goose Lake.
Comment
UCD137998
Alisma triviale
Herbert L. Mason
1955-8-13
14651 B
Modoc
southwest side of Goose Lake.
Comment
UC1178813
Allium acuminatum
Herbert L. Mason
1947-7-8
13321
Modoc
Cedar Pass, summit of Warner Mountains Warner Mountains, Cedar Pass
1921
Comment
UC623310
Allium amplectens
H. L. Mason
1939-5-18
12102
Napa
w Napa (near summit of Wooden Valley Grade); Wooden Valley Grade
Comment
UC635260
Allium campanulatum
H. L. Mason
1926-5-30
3312
El Dorado
hillslope above falls, back of Emerald Bay Lake Tahoe, Emerald Bay
Comment
UC635261
Allium campanulatum
H. L. Mason
1924-6-15
1033
Plumas
Graeagle
Comment
UC635207
Allium crispum
H. L. Mason
1930-4-21
5600
San Benito
Priest Valley
Comment
UC1076030
Allium falcifolium
Herbert L. Mason
1947-5-17
14764
Siskiyou
on Scott Mountain road 5 mi s Callahan
Comment
UC635571
Allium fimbriatum var. fimbriatum
H. L. Mason
1929-4-29
5258
Lake
between Middletown and Lower Lake
Comment
CAS-BOT-BC469352
Allium fimbriatum var. fimbriatum
H. L. Mason
1926-4-26
3022
Los Angeles
Near Rock Creek, north side of San Gabriel Mountians
Comment
UC635254
Allium monticola
H. L. Mason
1923-6-18
491
Ventura
Topatopa Mountain
Comment
JROH4556
Allium peninsulare var. franciscanum
H. L. Mason
1921-5-13
s.n.
San Mateo
Jasper Ridge Biological Preserve, Stanford University. This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request.
Comment
UC635245
Allium serra
H. L. Mason
1932-4-17
6934
Santa Clara
New Almaden
Comment
UC635249
Allium serra
H. L. Mason
1929-3-29
5135
Contra Costa
Marsh Creek Road 2 mi e Claton; Marsh Creek Road
Comment
UC635252
Allium serra
H. L. Mason
1929-4-7
5187
Stanislaus
about 10 mi e Oakdale; Sierra Nevada Foothills
Comment
UC908937
Allophyllum divaricatum
Herbert L. Mason
1934-5-5
8114
Lake
e. side Mt. Konocti
Comment
UC963786
Allophyllum divaricatum
Herbert L. Mason
1945-6-29
12614
Lake
3 mi. s. Kelseyville
Comment
UCSB37259
Allophyllum divaricatum
Mason, H.
1938-7-7
Mariposa
Brecca Ridge South of Swamp Lake; Yosemite
Comment
UC908478
Allophyllum gilioides subsp. gilioides
Herbert L. Mason
1928-1
4427
Contra Costa
s. slope Mt. Diablo (Sycamore Canyon); , Sycamore Canyon
Comment
UC665615
Allophyllum gilioides subsp. violaceum
Herbert L. Mason
1941-7-16
12487
El Dorado
s. Lake Tahoe (Cold Creek); Sierra Nevada, Cold Creek
2286
Comment
UC908633
Allophyllum gilioides subsp. violaceum
Herbert L. Mason
1939-7-7
12159
Nevada
3 mi. w. Donner Summit
2072
Comment
UCR111260
Allophyllum gilioides subsp. violaceum
H. L. Mason
1941-7-16
12487
El Dorado
Sierra Nevada Mtns., Cold Creek, south of Lake Tahoe.
1912
Comment
UC907868
Allophyllum glutinosum
Herbert L. Mason
1923-6-16
445
Santa Barbara
Rattlesnake Canyon trail to La Cumbre Peak (Santa Barbara); Santa Barbara
Comment
UC1186143
Allophyllum integrifolium
Herbert L. Mason
1938-7-7
11867
Tuolumne
w. Hetch Hetchy (Breccia Ridge s.e. of Swamp Lake); Sierra Nevada, Yosemite Nat'l Park, Breccia Ridge
1981
Comment
POM264342
Allophyllum violaceum
H. L. Mason
1941-7-16
12487
El Dorado
Cold Creek, south of Lake Tahoe
2287
Comment
SEINET8130302
Alnus incana
H. L. Mason
1939-1
12172
Unknown
Comment
SBBG28462
Alnus incana subsp. tenuifolia
H. L. Mason
1939-7-18
12172
El Dorado
N side of Luther Pass, 1 mi W of Grass Lake Meadow
2346
Comment
UC629713
Alnus incana subsp. tenuifolia
Herbert L. Mason
1939-7-18
12172
El Dorado
1 mi w Grass Lake Meadow (n side of pass); Luther Pass
2346
Comment
UC1093921
Alnus rhombifolia
Herbert L. Mason
1925-7-30
2187
Tuolumne
Smith Peak Trail from Mather
Comment
UC1093922
Alnus rhombifolia
Herbert L. Mason
1924-11-23
1159
Contra Costa
Las Trampas Ridge; via Cashion
Comment
SEINET10478510
Alnus tenuifolia
Herbert L. Mason
1939-7-18
Mason 12172
El Dorado
North side of Luther Pass, one mile west of Grass Lake Meadow.
2347
Comment
UC1100226
Alopecurus geniculatus
Herbert L. Mason and Verne Grant
1947-7-12
13396
Modoc
several mi. s. Alturas (irrgation ditch by Jones' Lane, off Hwy. 395)
Comment
UC936194
Alopecurus saccatus
H. L. Mason
1932-4-24
6969
San Joaquin
11 mi. s. Clements
Comment
UC1191387
Amaranthus albus
Herbert L. Mason and S. Galen Smith
1948-7-29
8248
Merced
e of Los Banos (at end of Turner Island Road); Turner Island
Comment
UC1191388
Amaranthus albus
Herbert L. Mason and S. Galen Smith
1948-7-29
8248
Merced
e of Los Banos (at end of Turner Island Road); Turner Island
Comment
UC1191385
Amaranthus retroflexus
Herbert L. Mason, Verne Grant
1947-7-10
13343
Modoc
Dorris Reservoir, 2 miles east of Alturas
Comment
GH346789
Amelanchier alnifolia
H. L. Mason
1928-5-3
4490
Unknown
Near bridge of Cosumnes River at mouth of Clark Creek
Comment
UC1199870
Amelanchier utahensis
Herbert L. Mason
1923-6-18
504
Ventura
Timber Creek canyon Topatopa Mountains, Sespe Creek (a tributary of Sespe Creek)
Comment
UC555320
Amelanchier utahensis
H. L. Mason
1928-5-3
4490
El Dorado
mouth of Clark Creek Clark Creek (near bridge of Cosumnes River)
Comment
UC1191563
Ammannia coccinea
Herbert L. Mason
1945-9-19
12739
Butte
n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge
Comment
UCD102896
Ammannia robusta
H. L. Mason; Verne Grant
1945-7-10
12633
Butte
Butte Sink. Butt Creek, N of Marysville Buttes, Grey Lodge Game Refuge, southern.
Comment
UC573136
Amsinckia tessellata var. gloriosa
H. L. Mason
1932-3-19
6831
San Joaquin
2 mi e Midway
Comment
UC1179098
Anaphalis margaritacea
Herbert L. Mason
Jul 7 1939-Jul 8 1958
12152
Nevada
3 mi w Donner Summit
2072
Comment
UC912487
Anaphalis margaritacea
Herbert L. Mason
1922-7-19
311
Tuolumne
Lodge Meadow
Comment
CAS-BOT-BC64146
Ancistrocarphus filagineus
Herbert L. Mason
1952-4-27
14286
San Benito
About 3 miles from mouth of San Carlos Canyon
Comment
UC1051471
Ancistrocarphus filagineus
Herbert L. Mason
1952-4-27
14286
San Benito
ca 3 mi from mouth San Carlos Canyon
Comment
UC1060647
Ancistrocarphus filagineus
Herbert L. Mason
1957-5-11
14697
San Benito
2-3 mi e Hernandez
Comment
UC1111020
Ancistrocarphus filagineus
Herbert L. Mason
1935-5-2
8378
Kern
Havilah; Kern River drainage
Comment
UC1111574
Ancistrocarphus filagineus
Herbert L. Mason
1938-5-8
11794
Santa Barbara
on rd to, (serpentine outcrop) Figueroa Mountain
1066
Comment
UC673625
Ancistrocarphus filagineus
H. L. Mason
1933-4-30
7233
Lake
10 mi n, on rd to Middleton Pope Valley
Comment
UC1111009
Androsace elongata subsp. acuta
Herbert L. Mason
1928-3-4
4166
Contra Costa
Shell Ridge
Comment
RSA84449
Anemone grayi
H. L. Mason
1927-4-24
3698
San Mateo
La Honda
Comment
UC634954
Anemone oregana
H. L. Mason
1932-4-28
7025
Santa Cruz
Soquel Canyon; Santa Cruz Mtns
Comment
UC672439
Anemopsis californica
Herbert L. Mason
1926-4-25
2902
Orange
near Laguna
Comment
CAS-BOT-BC64752
Anisocoma acaulis
H. L. Mason
1932-4-2
6897
Kern
3 miles west of Muroc, Mojave Desert
Comment
CAS-BOT-BC63958
Antennaria argentea
Herbert L. Mason
1936-7-12
11240
Mariposa
Peregoy Meadow, Glacier Point road
2255
Comment
UC912217
Antennaria argentea
Herbert L. Mason
1925-6-27
2118
Tuolumne
near, (at Hog Ranch) Mather
Comment
CAS-BOT-BC59246
Antennaria corymbosa
H. L. Mason
1923-7-30
675
Tuolumne
Lyell Fork of the Tuolumne River
Comment
UC1076045
Antennaria dimorpha
Herbert L. Mason
1947-5-17
14777
Trinity
summit of, (Trinity-Siskiyou County line) Scott Mountain Grade
Comment
UC712403
Antennaria media
Herbert L. Mason
1936-7-24
11344
Tuolumne
Conness Range Sierra Nevada, Yosemite National Park, White Moutain, Connes
3505
Comment
SEINET191758
Antennaria rosea
H. L. Mason
1939-7-8
12162
El Dorado
NE end of Fallen Leaf Lake
1951
Comment
SEINET10920153
Antennaria rosea
Herbert L. Mason
1939-7-8
Mason 12162
El Dorado
Open pine forest, northeast end of Fallen Leaf Lake.
1951
Comment
UC1110536
Anthoxanthum aristatum
Herbert L. Mason
1946-5-18
12766
Mendocino
e of Mendocino City
Comment
UC672555
Antirrhinum coulterianum
H. L. Mason
1926-4-26
2949
Los Angeles
Pacoima Wash; San Gabriel Mountains
Comment
UC672564
Antirrhinum nuttallianum subsp. subsessile
H. L. Mason
1926-4-25
2907
Orange
5 mi s Laguna
Comment
UC566820
Apiastrum angustifolium
H. L. Mason
1930-3-30
5534
San Benito
14 mi below the Pinnacles (San Benito River Canyon); San Benito River Canyon
Comment
UC623308
Apocynum androsaemifolium
H. L. Mason
1939-5-18
12103
Napa
near summit of Wooden Valley Grade
Comment
UC907580
Apocynum cannabinum
Herbert L. Mason
1942-1
Sacramento
along dike of Sacramento R. near Walnut Grove
Comment
CAS-BOT-BC392038
Aquilegia eximia
H. L. Mason
1933-9-24
s.n.
Lake
St. Helena Creek, east slope of Mount St. Helena
Comment
UC635104
Aquilegia eximia
H. L. Mason
1933-9-24
Lake
St. Helena Creek e slope of Mt. St. Helena
Comment
UC635108
Aquilegia pubescens
H. L. Mason
1923-7-31
678
Tuolumne
Dana Fork Sierra Nevada Mtns
Comment
JEPS14812
Arabidopsis thaliana
H. L. Mason
1928-4-5
Alameda
Berkeley, University grounds Berkeley; , University grounds
Comment
UC565469
Arabis blepharophylla
H. L. Mason
1927-4-26
5216
Marin
w of Alpine Lake (on road from Fairfax to crest of Bolinas Ridge); Bolinas Ridge
Comment
CAS-BOT-BC407766
Arceuthobium abietinum
Herbert L. Mason
1924-6-26
1101
Tuolumne
Ridge north of Middle Fork near Mather, Yosemite National Park
Comment
UC1076469
Arceuthobium campylopodum
H. L. Mason
1928-4-8
4285
Sonoma
Fort Rosa
Comment
UC1039598
Arceuthobium campylopodum
Herbert L. Mason
1931-11-1
5888
Monterey
rd betw MOnterey and Carmel
Comment
GH350134
Arctostaphylos canescens
H. L. Mason
1926-1-2
2612
Unknown
near summit of Mountain. Toll House Canyon, Mount St. Helena
Comment
UC571090
Arctostaphylos canescens subsp. canescens
H. L. Mason
1926-1-2
2612
Napa
Toll House Canyon Mount St. Helena (near summit of mt.)
Comment
UC571192
Arctostaphylos canescens subsp. canescens
H. L. Mason
1925-12-31
2578
Lake
via Clover Creek School Rd Upper Lake
Comment
UC571196
Arctostaphylos columbiana
H. L. Mason
1932-7-21
7104
Humboldt
Trinidad Head
Comment
UC571240
Arctostaphylos columbiana
H. L. Mason
1932-8-28
7171
Mendocino
Point Arena
Comment
CAS-BOT-BC40089
Arctostaphylos myrtifolia
H. L. Mason
1926-5-30
3339
Amador
Hill south of Ione
Comment
RSA381123
Arctostaphylos myrtifolia
George Mason, Roman Gankin
1956-10-27
192
Calaveras
1/2 mi. N of Mokolumne River behind high cliffs. Located right across the river from Comanche in Calaveras Co.
Comment Read comments Jan 10 2014
UC571080
Arctostaphylos myrtifolia
H. L. Mason
1928-5-3
4468
Amador
one mi s Ione
Comment
UC571081
Arctostaphylos myrtifolia
H. L. Mason
1926-5-30
3339
Amador
hill s Ione
Comment
UCD52844
Arctostaphylos nevadensis
G. W. Mason
1958-5-25
301
El Dorado
50 yds. north from U.S. Hwy. 50 on either side of gravel road leading down to a bog at eastern foot of Meyers Grade.
Comment
CAS-BOT-BC39928
Arctostaphylos nissenana
H. L. Mason
1945-2-1
s.n.
Placer
Placerville
Comment
UC672656
Arctostaphylos nummularia
H. L. Mason
1926-2-28
2677
Marin
s slopes Mount Tamalpais
Comment
CAS-BOT-BC42238
Arctostaphylos pallida
H. L. Mason
1925-1-11
1178
Alameda
Oakland Hills
Comment
UCD53471
Arctostaphylos pechoensis var. viridissima
H. L. Mason
1934-3-31
8055
Santa Barbara
La Purrissima Ridge; north of Lompoc.
Comment Read comments Dec 9 2008
UC571085
Arctostaphylos pumila
H. L. Mason
1923-6-23
570
Monterey
Del Monte
Comment
UC1083190
Arctostaphylos rudis
Herbert L. Mason
1937-2-21
11542
Santa Barbara
near Lompoc Landing; Burton Mesa
Comment
UC1178859
Arctostaphylos rudis
H. L. Mason
1938-5-7
11770
Santa Barbara
nw Lompoc; Burton Mesa
Comment
UC571074
Arctostaphylos tomentosa subsp. bracteosa
H. L. Mason
1931-11-1
5883
Monterey
road between Monterey and Carmel
Comment
UC571203
Arctostaphylos tomentosa subsp. subcordata
Herbert L. Mason
1927-9-25
4106
Santa Barbara
Buena Vista Canyon Santa Cruz Island, Pine Ridge
Comment
UC634745
Arctostaphylos uva-ursi
H. L. Mason
1930-3-9
5520
Marin
summit of promontory Point Reyes
Comment
SEINET11988273
Arctostaphylos viscida
G. Mason, Tucker, J. M.; Gankin, R.
1956-1
193
Calaveras
0.5 mi N of Mokalomne River behind high cliffs, right across river from Comanche
Comment
UC465583
Arenaria kingii var. glabrescens
Herbert L. Mason
1938-7-26
12019
Tuolumne
s Jack Main Meadows; Sierra Nevada, Yosemite National Park, Andrews Peak
2438
Comment
UC1039630
Argemone corymbosa
Herbert L. Mason
1935-4-30
8285
San Bernardino
Poison Canyon
Comment
UC543751
Aristolochia californica
H. L. Mason
1927-5-10
3717
Butte
n.e. of Oroville (Coal Creek, Table Mt.); Table Mt.,Coal Creek
Comment
UC635028
Aristolochia californica
Herbert L. Mason
1926-3-6
2683
Marin
near Ross
Comment
UC1192153
Arnica chamissonis
Herbert L. Mason
1948-7-18
13608
Siskiyou
Grass Lake
Comment
UC1039990
Arnica dealbata
Herbert L. Mason
1938-7-13
11951
Mariposa
Wawona Point, Mariposa Grove Big Tree Sierra Nevada, Yosemite National Park
2133
Comment
UC1093881
Arnica mollis
Herbert L. Mason
1938-7-30
12053
Tuolumne
Tiltill Mountain (south end) Sierra Nevada, Yosemite National Park, Tiltill Mountain
2590
Comment
UC543764
Asarum caudatum
Herbert L. Mason
1926-3-21
2778
Sonoma
Middleton Road - Mt. St Helena; Lake Co.
Comment
CAS-BOT-BC400755
Asarum lemmonii
Herbert L. Mason
1936-5-15
11132
Mariposa
East fork of the Chowchilla River, Chowchilla Mountains
1463
Comment
CAS-BOT-BC400756
Asarum lemmonii
Herbert L. Mason
1936-5-15
11132
Mariposa
East fork of the Chowchilla River, Chowchilla Mountains
1463
Comment
UC543748
Asarum lemmonii
Herbert L. Mason
1925-8-11
2213
Tuolumne
Big Oak Flat Road near Tuolumne Grove
Comment
UC1039628
Asclepias californica
Herbert L. Mason
1935-4-30
6263
Kern
Hobo Hot Springs Kern River Canyon
Comment
SEINET197565
Asclepias vestita subsp. vestita
Herbert L. Mason
1940-5-5
12274
Merced
Twin Peaks, Los Banos Creek, San Carlos Range.
610
Comment
SEINET955765
Asclepias vestita subsp. vestita
Herbert L. Mason
1940-1
12274
Merced
Twin Peaks. Los Banos Creek, San Carlos Range.
610
Comment
CAS-BOT-BC54126
Asperugo procumbens
Herbert Louis Mason; Verne Grant
1947-7-12
13416
Modoc
Near S end of W Side Road, Pit River Valley, S of Alturas.
Comment
SEINET200239
Aster campestris var. bloomeri
Herbert L. Mason
1938-7-22
11977
Tuolumne
Yosemite National Park ; Beehive N. of Hetch Hetchy Dam
1981
Comment
CAS-BOT-BC182301
Astragalus didymocarpus var. didymocarpus
H. L. Mason
1926-4-26
2963
Los Angeles
Four miles west of Saugus
Comment
CAS-BOT-BC186726
Astragalus gambelianus
H. L. Mason
1929-3-23
5098
Madera
Hills back of Madera
Comment
UC635302
Astragalus gambelianus
H. L. Mason
1928-4-26
4380
Contra Costa
Berkeley-Oakland Hills
Comment
CAS-BOT-BC178471
Astragalus gambelianus
H. L. Mason
1928-4-15
4345
Contra Costa
East-facing grassy slope, Moraga Ridge
Comment
CAS-BOT-BC178472
Astragalus gambelianus
H. L. Mason
1928-4-26
4380
Contra Costa
Berkely - Oakland Hills
Comment
UC714404
Astragalus kentrophyta var. danaus
Herbert L. Mason
1936-7-31
11468
Mono
Tioga Crest e Saddlebag Lake (Tioga Pass region); Sierra Nevada, Tioga Pass Region, e of Saddlebag Lake
3474
Comment
UC635310
Astragalus nuttallii var. nuttallii
H. L. Mason
1929-3-2
5033
Monterey
twenty mi s Carmel (Big Sur Road); s of Carmel
Comment
UC635306
Astragalus oxyphysus
H. L. Mason
1930-3-30
5541
San Benito
fourteen mi below Pinnacles (San Benito River Canyon); , below Pinnacles
Comment
UC635311
Astragalus pomonensis
H. L. Mason
1926-4-30
3114
Riverside
one mi s Temecula (Temecula Canyon); s of Temecula, Temecula Canyon
Comment
UC673343
Athysanus pusillus
H. L. Mason
1929-4-29
5237
Lake
2.9 mi w of Lakeport
Comment
UC1039641
Atrichoseris platyphylla
Herbert L. Mason
1935-4-30
8290
San Bernardino
Poison Canyon
Comment
UC1076494
Atriplex lentiformis subsp. lentiformis
Herbert L. Mason
1927-11-27
4143
Santa Barbara
Carpenteria Carpenteria (along ocean bluffs)
Comment
UC1191370
Atriplex rosea
Herbert L. Mason
1947-8-9
13477
Modoc
e side Fairchild Swamp (n of Alturas); e side Fairchild Swamp, n of Alturas
Comment
UCD97819
Atriplex serenana
Herbert L. Mason
1927-11-27
4149
Santa Barbara
Carpenteria.
Comment
UCD97820
Atriplex serenana
Herbert L. Mason; S. Galen Smith
1948-7-29
8232
Merced
North Mercy Springs Road, about 4 miles north of Los Banos.
Comment
UC1192164
Baccharis glutinosa
Herbert L. Mason
1945-8-16
12656
Solano
near Suisan Bay; Grizzly Island
Comment
CAS-BOT-BC106767
Baccharis salicifolia
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
UC912518
Balsamorhiza deltoidea
Herbert L. Mason
1932-4-25
7019
El Dorado
on road between Coloma and Auburn Coloma; Pilot Hill
Comment
UC912516
Balsamorhiza lanata
Herbert L. Mason
1929-5-18
5330
Siskiyou
Yreka
Comment
CAS-BOT-BC145819
Beckmannia syzigachne
Herbert L. Mason
1948-9-4
13669 b
Mono
Mono Lake. Rush Creek.
Comment
SACT000425
Beckmannia syzigachne
Herbert Mason
1953-7-7
Sierra
Sierra Valley; Common.
Comment
POM312314
Bergia texana
H. L. Mason
1945-8-24
12681
Lake
East shore, Lower Lake.
Comment
CAS-BOT-BC102117
Bidens cernua
Herbert L. Mason
1939-7-11
12123
Tuolumne
Swamp Lake, just west of Hetch Hetchy Dam, Yosemite National Park
1584
Comment
POM312323
Bidens cernua
H. L. Mason, Verne Grant
1947-7-12
13431
Modoc
South loop of west side road, north of Likely
Comment
CAS-BOT-BC15147
Bidens cernua var. cernua
Herbert Louis Mason; Verne Grant
1947-7-12
13431
Modoc
South loop of west side road, north of Likely
Comment
UC1192175
Bidens frondosa
Herbert L. Mason and Verne Grant
1946-9-4
13108
Butte
833 Canal, West Gridley Road, Butte Sink Butte Sink, 833 Canal, West Gridley Road
Comment
UC1192178
Bidens frondosa
Herbert L. Mason and S. Galen Smith
1948-8-12
8333
Merced
5 mi e of Gustine (San Joaquin Valley); San Joaquin Valley
Comment
UC632844
Bidens tripartita
H. L. Mason
1936-7-15
11251
Tuolumne
1/2 mi w of Mather
1371
Comment
GH414797
Blennosperma nanum
H. L. Mason
1936-4-10
11052
Unknown
Fields south of Angel's Camp
Comment
UC632823
Blennosperma nanum var. nanum
H. L. Mason
1936-3-14
10968
Calaveras
3 mi w of San Andreas
Comment
UC1081570
Boechera breweri subsp. breweri
Herbert L. Mason
1936-4-26
11092
Lake
e side Bartlett Mountain
Comment
GH378801
Boechera depauperata
H. L. Mason
1936-7-29
11426
Unknown
Terminal moraine of Conness Glacier, Sierra Nevada
3505
Comment
UC642614
Boechera depauperata
H. L. Mason
1936-7-23
11297
Tuolumne
Mount Conness Sierra Nevada
Comment
UC559957
Boechera howellii
H. L. Mason
1936-7-29
11427
Mono
Conness Glacier Sierra Nevada
3505
Comment
UC559953
Boechera lemmonii
H. L. Mason
1936-7-30
11445
Tuolumne
Shepherd's Crest Sierra Nevada, Mount Conness Range
3535
Comment
POM257255
Boisduvalia densiflora var. densiflora
H. L. Mason
1925-7-16
2163
Tuolumne
Hog Ranch
Comment
POM310936
Boisduvalia densiflora var. densiflora
H. L. Mason
1952-7-17
14380
Plumas
Sierra Nevada: Along Western Pacific tracks just south of Beckwourth, Sierra Valley.
1524
Comment
POM312611
Boisduvalia densiflora var. densiflora
H. L. Mason
1947-8-11
13495
Lassen
Hwy 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County
Comment
UC570902
Bolandra californica
H. L. Mason
July, 1930
5708
Calaveras
near Hermit Springs; Sierra Nevada Mountains, Blue Creek
Comment
CAS-BOT-BC47552
Bolandra californica
H. L. Mason
1930-7-1
5708
Calaveras
Blue Creek, near Hermit Springs, Sierra Nevada Mountains.
Comment
CAS-BOT-BC28181
Bolboschoenus fluviatilis
Herbert L. Mason
1945-9-18
12710
Sutter
Sutter By-pass, N of Knight's Landing.
Comment
CAS-BOT-BC28219
Bolboschoenus fluviatilis
Herbert L. Mason
1946-7-27
12954
Lake
Upper Lake - Lakeport Road.
Comment
UC1100844
Bolboschoenus fluviatilis
Herbert L. Mason, Verne Grant
1946-8-14
13017
Butte
canal near big pond on Sacramento Outing Club (Butte Sink); , on Sacramento Outing Club
Comment
UCD140008
Bolboschoenus glaucus
Herbert L. Mason; Verne Grant
1946-8-7
12991
Butte
Gridley Road north of Butte Sink.
Comment
CAS-BOT-BC31373
Bolboschoenus maritimus
Herbert L. Mason
1945-9-19
12731
Butte
Gray Lodge Game Refuge, NW of Pennington.
Comment
UC1100916
Bolboschoenus maritimus
Herbert L. Mason, Verne Grant
1947-7-8
13277
Lake
Bear Creek near junction of Williams Highway and Upper Lake Highway; Bear Creek
Comment
UCD140033
Bolboschoenus maritimus subsp. paludosus
H. L. Mason
1945-9-18
12711
Sutter
Pennington Road between Live Oak and Pennington.
Comment
CAS-BOT-BC31400
Bolboschoenus robustus
Herbert L. Mason
1945-8-16
12660 a
Solano
Grizzly Island, near Suisun Bay.
Comment
UC1077118
Botrychium multifidum
Herbert L. Mason
1926-5-30
3311
El Dorado
Eagle Creek Lake Tahoe drainage
Comment
UC912692
Botrychium simplex
Herbert L. Mason
1936-7-27
11370
Tuolumne
Gaylor Lakes Yosemite National Park
Comment
UC566857
Bowlesia incana
H. L. Mason
1928-4-29
4419
Contra Costa
Mount Diablo, Sycamore Canyon Sycamore Canyon; Mount Diablo, Sycamore Canyon
Comment
UC1081522
Boykinia major
Herbert L. Mason
1936-7-11
11207
Mariposa
w Wawona (Big Creek, a tributary of the South Fork of the Merced River); Sierra Nevada, trib of South Fork Merced River, Big Creek
1584
Comment
UC635681
Brandegea bigelovii
H. L. Mason
1928-3-10
4213
Riverside
Coachella Mountains, Hidden Springs Canyon Hidden Springs Canyon; Coachella Mountains, Hidden Springs Canyon
Comment
CAS-BOT-BC106210
Brickellia californica
H. L. Mason
1927-9-23
4083
Santa Barbara
Canyon back of Prisoners Harbor - Santa Cruz Island
Comment
JEPS18575
Brickellia californica
Herbert L. Mason
1957-9-23
4083
Santa Barbara
Prisoners Harbor, Santa Cruz Island.
Comment
UC571018
Brickellia californica
H. L. Mason
1928-10-3
4988
Monterey
10 mi above Carmel Mission (Carmel River); Carmel River
Comment
UC571016
Brickellia californica
H. L. Mason
1923-6-19
521
Ventura
Ojai
Comment
UC769983
Briza minor
Herbert L. Mason
1934-3-25
7931
Sacramento
Keithley Ranch Sacramento Valley, Rio Linda
Comment
UC912578
Briza minor
H. L. Mason
1926-5-28
3262
El Dorado
Rose Springs
Comment
SEINET4183112
Briza minor
Herbert L. Mason
1934-3-25
7931
Sacramento
Keithly ranch, Rio Landa, Sacramento County.
Comment
UC634760
Brodiaea nana
Herbert L. Mason
1928-5-3
4452
San Joaquin
4 mi N of Clements, vernal pools
Comment
CAS-BOT-BC483178
Brodiaea terrestris subsp. terrestris
H. L. Mason
1917-4-10
113
San Mateo
Crystal Springs Lake
Comment
UCD58517
Bromus diandrus
Herbert L. Mason; Malcolm A. Nobs
1949-4-27
723
Solano
Suisun State Game Refuge.
Comment
RSA23338
Bulbostylis capillaris
H. L. Mason
1938-7-13
11946
Mariposa
Yosemite National Park; Base of El Capitan, Yosemite Valley
1227
Comment
UC632753
Bulbostylis capillaris
H. L. Mason
1938-7-6
11858
Tuolumne
between Swamp Lake and Miguel Meadow; Yosemite National Park
1645
Comment
SEINET10587210
Bulbostylis capillaris
Herbert L. Mason
1938-7-13
Mason 11946
Mariposa
Yosemite Valley, Mariposa County.
1227
Comment
UC555386
Caesalpinia virgata
H. L. Mason
1928-3-10
Riverside
Coachella Mts., Hidden Springs Canyon
Comment
UCD57714
Calamagrostis purpurascens
H. L. Mason
1936-7-23
11303
Tuolumne
Yosemite National Park, slopes of Mt. Conness.
Comment
UC570771
Callitriche
H. L. Mason
1932-3-1
6804
Marin
w side Olema (to Bolinas Road)
Comment
UC570779
Callitriche heterophylla
H. L. Mason
Apr 1930
5549
Stanislaus
2 mi s Knight's Ferry (8 mi e of Oakdale)
Comment
UC570757
Callitriche heterophylla var. bolanderi
H. L. Mason
1929-4-7
5170
Stanislaus
6 mi w Oakdale
Comment
UC570775
Callitriche longipedunculata
H. L. Mason
Apr 1930
5545
Calaveras
2 miles east of Valley Springs
Comment
UC1101518
Callitriche verna
Herbert L. Mason and Verne Grant
1947-7-11
13366
Modoc
s of Alturas (by Jones' Lane, off Highway 395)
Comment
UC672155
Calochortus amabilis
Herbert L. Mason
Jun 1930
5681
Lake
St. Helena Creek Mount St. Helena
Comment
UC1076028
Calochortus coeruleus
Herbert L. Mason
1947-5-17
14765
Siskiyou
5 mi s Callahan (on Scott Mountain Road)
Comment
UC672148
Calochortus monophyllus
Herbert L. Mason
1927-5-11
3725
Yuba
near Dobbins
457
Comment
UC672146
Calochortus nudus
Herbert L. Mason
1926-5-29
3297
Nevada
3 mi w Cisco
1767
Comment
UC1187346
Calochortus splendens
Herbert L. Mason
1961-5-21
15075
Colusa
Mouth of Bear Valley
Comment
UC672151
Calochortus tolmiei
Herbert L. Mason
1928-4-8
4283
Sonoma
Fort Ross
Comment
UC672142
Calochortus uniflorus
Herbert L. Mason
1928-4-13
4327
Sonoma
near Petaluma
Comment
RSA92271
Calycadenia multiglandulosa subsp. bicolor
H. L. Mason
1928-4-28
4410
Marin
Tiburon Peninsula
Comment
UC912615
Calycadenia truncata
Herbert L. Mason
1929-10-20
5512
Alameda
Mount Hamilton Range, Cedar Mountain
Comment
UC1076273
Calycadenia villosa
Herbert L. Mason
1930-10-25
5784
Monterey
Foothills of Santa Lucia Mountains, between Jolon and Santa Lucia Ranger Station along San Antonio River San Antonio River, Santa Lucia Mountains
Comment
UC1076560
Calyptridium monospermum
Herbert L. Mason
1938-7-22
11963
Tuolumne
n of Hetch Hetchy (Vernon Lake Trail); Sierra Nevada, Yosemite National Park, Vernon Lake Trail
2072
Comment
SEINET184160
Calyptridium quadripetalum
H. L. Mason
1936-4-26
11097 a
Lake
Bartlett Springs 16 mi NE of Clear Lk
792
Comment
UC1540432
Calyptridium quadripetalum
Herbert L. Mason
1936-4-26
11097 a
Lake
16 mi ne of Clear Lake (Bartlett Springs); Bartlett Springs
792
Comment
UC642676
Calyptridium umbellatum
H. L. Mason
1936-7-23
11309
Tuolumne
Mount Conness; Sierra Nevada, Mount Conness
Comment
UC912376
Calystegia malacophylla subsp. malacophylla
H. L. Mason
1925-7-4
2144
Tuolumne
Mather Sierra Nevada Mountains, Yosemite National Park, Mather (Yosemite National Park, Sierra Nevada Mountains)
Comment
UC635022
Calystegia purpurata
H. L. Mason
1924-11-16
1154
Marin
Willow Camp , Willow Camp (Mount Tamalpais)
Comment
UC1191637
Calystegia sepium subsp. binghamiae
Herbert L. Mason, Verne Grant
1946-8-21
13067
San Joaquin
Holt Holt (in tules)
Comment
UC1191640
Calystegia sepium subsp. binghamiae
Herbert L. Mason, Verne Grant
1947-6-26
13251
Solano
Cordelia Slough , Cordelia Slough (Suisun Marsh)
Comment
RSA257272
Camissonia bistorta
H. L. Mason
1926-5-1
3186
San Diego
[Unspecified]
Comment
UCD103379
Camissonia campestris
Steve Mason; Joey Artero
1993-4-24
10
San Luis Obispo
San Luis Obispo County: Carrizo Plain Natural Area, Soda Lake Road, 7 miles SE of Washburn Ranch Road. About 200' in from NE side of road.
640
Comment
UC635287
Camissonia campestris subsp. campestris
H. L. Mason
1929-3-31
5153
Contra Costa
Antioch San Joaquin River (sand dike along river)
Comment
UC635394
Camissonia strigulosa
H. L. Mason
1926-4-18
2861
San Francisco
hills near sand dunes; San Francisco
Comment
CAS-BOT-BC160890
Camissonia tanacetifolia subsp. tanacetifolia
H. L. Mason
1924-6-15
1037
Plumas
Graeagle
Comment
POM257257
Camissonia tanacetifolia subsp. tanacetifolia
H. L. Mason
1924-6-15
1037
Plumas
Graeagle - near Blairsden.
Comment
POM312605
Camissonia tanacetifolia subsp. tanacetifolia
H. L. Mason, Verne Grant
1947-7-10
13327
Modoc
Dorris Reservoir, 2 miles east of Alturas.
Comment
UC635398
Camissoniopsis cheiranthifolia subsp. cheiranthifolia
Herbert L. Mason
1927-10-4
4118
Santa Cruz
mouth of Waddell Creek Ano Nuevo Pt.
Comment
SEINET10463902
Campanula californica
Mason
1932-7-24
Mason 7116
Marin
MARSH ON INVERNESS RIDGE
Comment
SEINET10905986
Campanula californica
Mason
1946-7-4
Mason 12894
Sonoma
Pitkin Marsh, between Santa Rosa and Forestville
Comment
CAS-BOT-BC266444
Campanula exigua
H. L. Mason
1935-5-9
8310
Stanislaus
Slopes of Red Mountains, Arroyo del Puerto, Mount Hamilton Range
Comment
SEINET3557292
Campanula exigua
Herbert L. Mason
1940-5-5
12281
San Benito
Panoche Pass, about 20 miles SE of Paicines
Comment
UC635638
Campanula prenanthoides
H. L. Mason
1925-8-11
2218
Tuolumne
Big Oak Flat Road to Tuolumne Grove
Comment
SEINET10463489
Campanula scouleri
Mason
1950-7-15
Mason 14059
Trinity
SUMMIT OF GRADE, SCOTT MTN. HILLSLOPES
Comment
CAS-BOT-BC76292
Canbya candida
Herbert L. Mason
1935-4-30
10006
Kern
Walker Pass.
Comment
SEINET10904746
Canbya candida
Mason
1935-4-30
Mason 10006
Kern
Walker pass, southern sierra nevada.
Comment
UC1056982
Cardamine oligosperma
H. L. Mason
1927-4-23
3695
San Mateo
Pescadero Creek near Bloomquist Mill; Pescadero Creek near Bloomquist Mill
Comment
UC1076257
Cardionema ramosissimum
Herbert L. Mason
1932-4-28
7035
Monterey
Pajaro Hills e. of Watsonville; Pajaro Hills
Comment
CAS-BOT-BC245194
Carex atherodes
Herbert Louis Mason; Verne Grant
1947-7-12
13424
Modoc
Near S end of west side road, along railroad tracks, Pit River Valley, S of Alturas.
Comment
UC1100439
Carex atherodes
Herbert L. Mason, Verne Grant
1947-7-11
13376
Modoc
s Alturas (irrigation ditch near west side road); South Fork of Pit River
Comment
UC1056295
Carex buxbaumii
Herbert L. Mason
1939-7-11
12115
Tuolumne
marsh 1/2 mi below Swamp Lake; Yosemite National Park
1554
Comment
UC1102955
Carex buxbaumii
Herbert L. Mason
1958-8-9
14897
Tuolumne
w side of Hetch Hetchy Dam (meadow at Swamp Lake); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC599133
Carex buxbaumii
H. L. Mason
1938-7-9
11890
Tuolumne
w Hetch Hetchy; Yosemite National Park, Swamp Lake
1584
Comment
UC599137
Carex buxbaumii
H. L. Mason
1938-7-9
11901
Tuolumne
w Hetch Hetchy; Yosemite National Park, Swamp Lake
1584
Comment
YM-YOSE65387
Carex buxbaumii
H. L. Mason
1938-7-9
11890
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND
1584
Comment
YM-YOSE65399
Carex congdonii
H. L. Mason
1938-7-28
12046
Tuolumne
MACOMB RIDGE EAST OF TILDEN LAKE
3048
Comment
CAS-BOT-BC20576
Carex disperma
Herbert L. Mason
1952-8-16
14469
Nevada
Sierra Nevada. Sage Hen Creek. Meadow opposite University of California Trout Laboratory.
1981
Comment
SEINET13351343
Carex disperma
H. L. Mason
1952-8-16
14469
Nevada
Sierra Nevada, Sage Hen Creek, meadow opposite University of California Trout Laboratory
1981
Comment
CAS-BOT-BC9342
Carex feta
Herbert L. Mason
1958-8-9
14854
Tuolumne
Sierra Nevada, Yosemite National Park. Swamp Lake, west of Hetch Hetchy Dam
1584
Comment
UC1056298
Carex feta
Herbert L. Mason
1939-7-11
12116
Tuolumne
marsh 1/2 mi below Swamp Lake
Comment
UC1102952
Carex feta
Herbert L. Mason
1958-8-9
14854
Tuolumne
W of Hetch Hetchy Dam (Swamp Lake); Sierra Nevada, Yosemite National Park
1584
Comment
SEINET10921841
Carex helleri
Herbert L. Mason
1935-7-23
Mason 11270
Tuolumne
Alpine slopes east of the summit of Mount Conness, Sierra Nevada.
Comment
UC714313
Carex helleri
H. L. Mason
1936-7-23
11270
Tuolumne
e summit of Mount Conness; Sierra Nevada
Comment
YM-YOSE65445
Carex heteroneura
H. L. Mason
1938-7-30
12056
Tuolumne
SOUTH END TILTILL MTN.
2590
Comment
UC965617
Carex integra
Herbert L. Mason
1952-7-19
14437
Nevada
meadow opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
CAS-BOT-BC28404
Carex lenticularis var. lipocarpa
Herbert L. Mason
1938-7-10
11919
Tuolumne
South island in Swamp Lake, W of Hetch Hetchy.
1584
Comment
UC599142
Carex lenticularis var. lipocarpa
H. L. Mason
1938-7-10
11919
Tuolumne
w Hetch Hetchy; Yosemite National Park, Swamp Lake, South Island
1584
Comment
UC599123
Carex luzulifolia
H. L. Mason
1938-7-28
12041
Tuolumne
E of Tilden Lake (Macomb Ridge); Yosemite National Park
3048
Comment
YM-YOSE65466
Carex luzulifolia
H. L. Mason
1938-7-28
12041
Tuolumne
MACOMB RIDGE EAST OF TILDEN LAKE
3048
Comment
UC1100495
Carex nebrascensis
Herbert L. Mason, Verne Grant
1947-7-12
13435
Modoc
n Likely; Corporation Ranch Headquarters
Comment
YM-YOSE65514
Carex paucicostata
H. L. Mason
1938-7-10
11919
Tuolumne
SOUTH ISLAND SWAMP LAKE. WEST OF HETCH HETCHY
1584
Comment
UCD140721
Carex pellita
Herbert L. Mason; Verne Grant
1947-7-12
13423
Modoc
near south end of west side road, along railroad tracks, Pit River Valley, south of Alturas.
Comment
POM313115
Carex praegracilis
H. L. Mason, Verne Grant
1947-7-12
13439
Modoc
Corporation Ranch Headquarters, north of Likely.
Comment
UC599127
Carex preslii
H. L. Mason
1938-7-28
12043
Tuolumne
Macomb Ridge E of Tilden Lake Yosemite National Park
3048
Comment
YM-YOSE65519
Carex preslii
H. L. Mason
1938-7-30
12059
Tuolumne
SOUTH END TILTILL MTN.
2590
Comment
UC965597
Carex subfusca
Herbert L. Mason
1952-8-16
14488
Nevada
meadow opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC1056297
Carex utriculata
Herbert L. Mason
1939-7-11
12114
Tuolumne
marsh 1/2 mi below Swamp Lake; Yosemite National Park
1554
Comment
UC965613
Carex utriculata
Herbert L. Mason
1952-7-16
14347
Nevada
1 mi w University of California Trout Laboratory (adjacent to stream which arises from large spring in meadow); Sierra Nevada, Sage Hen Creek
1981
Comment
SEINET11054337
Carex utriculata
H. L. Mason
1952-7-19
14434
Nevada
Sierra Nevada, Sage Hen Creek, meadow opposite University of California Trout Laboratory
1981
Comment
CAS-BOT-BC115018
Carex vesicaria
Herbert L. Mason
1958-8-9
14887
Tuolumne
Meadow at Swamp Lake, west of Hetch Hetchy Dam.
1584
Comment
CAS-BOT-BC59738
Cassiope mertensiana
H. L. Mason
1928-7-5
4877
Mono
Tioga Mines.
Comment
UC712449
Cassiope mertensiana subsp. californica
Herbert L. Mason
1936-7-28
11400
Mono
Dana Plateau, vicinity of Mount Dana.
3596
Comment
UC1039784
Castilleja affinis subsp. affinis
H. L. Mason
1926-4-10
2815
Alameda
Cedar Mountain Mount Hamilton Range, Arroyo Mocho Canyon (via Arroyo Mocho Canyon)
Comment
UC1275791
Castilleja angustifolia
Herbert L. Mason
1963-5-7
15233
Mono
e of Mono Lake (Benton summit); Benton
Comment
UC673460
Castilleja attenuata
H. L. Mason
1929-3-23
5086
Tulare
3 mi above Springville; Middle Tule River
Comment
UC673441
Castilleja exserta
H. L. Mason
1932-3-19
6822
San Joaquin
2 mi e Midway (between Mountain House and Tracy)
Comment
UC673440
Castilleja exserta subsp. exserta
H. L. Mason
1929-3-15
5059
Contra Costa
about 5 mi from Brentwood (along Marsh Creek Road)
Comment
UC673456
Castilleja exserta subsp. exserta
H. L. Mason
1928-3-4
4168
Contra Costa
Shell Ridge
Comment
UC632794
Castilleja foliolosa
H. L. Mason
1936-3-21
11036
Mariposa
4 mi n Coulterville
Comment
UC673465
Castilleja lacera
H. L. Mason
1928-5-4
4507
El Dorado
4 mi n Shingle Spring; Greene Valley
Comment
UC673469
Castilleja lacera
H. L. Mason
1931-5-9
5871
Siskiyou
3 mi w Weed
Comment
JEPS3693
Castilleja linariifolia
H. L. Mason
1953-7-21
14563
Mono
just e Campito Mountain (near road to Naval Physiological Research Station, close to White Mt. Peak); White Mountains
3352
Comment
UCD122604
Castilleja minor subsp. minor
Herbert L. Mason
1948-9-4
13651
Mono
Rush Creek, Mono Lake.
Comment
RSA0010941
Castilleja minor subsp. minor
H. L. Mason
1947-8-11
13493
Modoc
On Highway 81, west margin of Lower Lake, near boundary between Lassen and Modoc counties.
Comment
UC712178
Castilleja nana
Herbert L. Mason
1936-7-31
11454
Mono
e of Saddlebag Lake (Tioga Crest); Sierra Nevada, Tioga Crest
Comment
JEPS18947
Castilleja pruinosa
Herbert L. Mason
1957-4-28
14689
El Dorado
about 5 mi s Georgetown; Garden Valley
579
Comment
UC632862
Castilleja tenuis
H. L. Mason
1936-7-12
11229
Mariposa
Peregoy Meadows Yosemite National Park (Glacier Point road)
2255
Comment
UC592146
Caulanthus
H. L. Mason
1930-4-20
5573
Kern
between Mohave and Lancaster; between Mohave and Lancaster
Comment
SBBG114013
Caulanthus californicus
H. L. Mason
1935-5-2
10001
Kern
1 mi E of Lost Hills
Comment
UC545817
Caulanthus californicus
Herbert L. Mason
1935-5-2
10001
Kern
one mi e Lost Hills (nw Kern County); e of Lost Hills
Comment
SFV1439
Caulanthus cooperi
H. L. Mason
1940-3-22
12233
Inyo
Death Valley Grapevine Mountains. Titus Canyon.
Comment
UC1111570
Caulanthus cooperi
Herbert L. Mason
1940-3-22
12233
Inyo
Titus Canyon Death Valley National Monument, Grapevine Mountains
Comment
UC592142
Caulanthus coulteri
H. L. Mason
1929-3-23
5076
Tulare
three mi above Springville (Middle Tule River); Middle Tule River
Comment
CAS-BOT-BC41032
Caulanthus flavescens
Herbert L. Mason
1935-3-24
10005
Alameda
West end of Corral Hollow.
Comment
UC639098
Caulanthus inflatus
H. L. Mason
1932-4-2
6896
Kern
3 mi w Muroc (Mohave Desert); , w of Muroc
Comment
UC634562
Ceanothus cordulatus
H. L. Mason
1925-8-11
2211
Tuolumne
along Big Oak 7 lot rd to Tuolumne Grove Yosemite National Park
Comment
CAS-BOT-BC48455
Ceanothus crassifolius
Herbert L. Mason; Munz; Peirson
1926-4-30
3120
Riverside
Southwestern Riverside Co. - Temecula canyon, 2 miles south of Temecula
Comment
UC634801
Ceanothus crassifolius
Herbert L. Mason
1923-6-16
434
Santa Barbara
La Combre Peak
Comment
UC634566
Ceanothus cuneatus var. cuneatus
Herbert L. Mason
1925-6-27
2126
Tuolumne
Mather (Hog Ranch)
Comment
UC634568
Ceanothus cuneatus var. cuneatus
H. L. Mason
March, 1925
Contra Costa
Mount Diablo
Comment
UC634573
Ceanothus cuneatus var. cuneatus
H. L. Mason
1926-6-6
3381
Santa Cruz
Big Basin
Comment
CAS-BOT-BC64053
Ceanothus cuneatus var. rigidus
H. L. Mason
1929-3-2
5027
Monterey
Big Sur Road, 20 mi. s. of Carmel.
Comment
UC912395
Ceanothus foliosus
Herbert L. Mason
1929-4-29
5231
Lake
just e of Hopland Mayacama Range
Comment Read comments Jul 28 2015
UC912378
Ceanothus gloriosus var. exaltatus
Herbert L. Mason
1931-3-7
5802
Sonoma
Vine Hill School, 12 miles west of Santa Rosa.
Comment
UC634812
Ceanothus griseus
H. L. Mason
1929-3-2
5023
Monterey
20 mi s of Carmel Big Sur Rd.
Comment
SEINET11191707
Ceanothus impressus
H. Mason
1951-3-31
s.n.
Alameda
Berkeley.
Comment
UC634809
Ceanothus incanus
H. L. Mason
1928-7-14
4901
Humboldt
East Fork of Eel River Garberville
Comment
UC635515
Ceanothus incanus
H. L. Mason
1926-6-23
561
Monterey
Cypress Point Carmel
Comment
UC912381
Ceanothus integerrimus
Herbert L. Mason
1931-4-19
5848
Monterey
near Santa Lucia Ranger Station Santa Lucia Mts.
Comment
UC635529
Ceanothus jepsonii
Herbert L. Mason
1926-3-22
2783
Lake
Mt. St. Helena
Comment
UC912390
Ceanothus leucodermis
Herbert L. Mason
1931-4-19
5846
Monterey
near Santa Lucia Ranger Station; Santa Lucia Mts.
Comment
UC912389
Ceanothus papillosus
Herbert L. Mason
1931-4-19
5844
Monterey
near Santa Lucia Ranger Station; Santa Lucia Mountains
Comment
GH425119
Ceanothus prostratus
H. L. Mason
1924-6-16
1046
Unknown
Graeagle
Comment
CAS-BOT-BC52172
Ceanothus pumilus
Herbert L. Mason
1947-5-17
14760
Siskiyou
Five miles south of Callahan, on Scott Mountain road
Comment
UC1076021
Ceanothus pumilus
Herbert L. Mason
1947-5-17
14760
Siskiyou
on Scott Mountain road five mi s Callahan; s of Callahan
Comment
UC634797
Ceanothus spinosus
Herbert L. Mason
1923-6-16
442
Santa Barbara
La Cumbre Peak Santa Barbara, La Cumbre Peak
Comment
UC634800
Ceanothus spinosus
Herbert L. Mason
1923-6-15
418
Santa Barbara
Gaviota Pass
Comment
CAS-BOT-BC52267
Ceanothus thyrsiflorus
Herbert L. Mason
1934-4-1
s.n.
San Luis Obispo
Twenty miles North of Cambria
Comment
CAS-BOT-BC52387
Ceanothus tomentosus var. tomentosus
H. L. Mason
1928-5-3
4467
Amador
hills one mile south of Ione
Comment
RSA131005
Centaurea calcitrapa
H. L. Mason
1921-10
s.n.
San Mateo
County Hospital, Belmont. Crystal Springs Road
Comment
UC1191678
Centaurium exaltatum
Herbert L. Mason
1947-8-15
13553
Modoc
e side Goose Lake (on Willow Ranch); Mouth of Crane Creek
Comment
UC1178020
Centaurium muehlenbergii
Herbert L. Mason
1955-7-14
14637
Contra Costa
0.5 mi e Antioch Bridge
Comment
UC566944
Centaurium muehlenbergii
H. L. Mason
1928-7-14
4903
Humboldt
near Garberville; East Fork of Eel River
Comment
UC566917
Centaurium venustum
H. L. Mason
1923-7-21
638
Tuolumne
Hetch Hetchy Sierra Nevada Mountains, Yosemite National Park
Comment
UC1093927
Centromadia fitchii
Herbert L. Mason
1929-9-21
5430
Contra Costa
3 mi above Clayton (Marsh Creek Road)
Comment
UC1056987
Centunculus minimus
Herbert L. Mason
Oct 23 1937-Oct 24 1937
11696 a
Mendocino
vicinity of Fort Bragg
Comment
UC673563
Cephalanthera austiniae
H. L. Mason
July, 1930
5700
Calaveras
near Hermit Springs (Blue Creek (tributary of N. Fork Mokelumne R.)); Blue Creek (tributary of N. Fork Mokelumne R.)
Comment
CAS-BOT-BC400159
Ceratophyllum demersum
H. L. Mason
1929-9-9
5421
San Joaquin
Holt
Comment
UC1028679
Ceratophyllum demersum
Herbert L. Mason
1938-8-26
12076
San Joaquin
Trappers Slough Roberts Island (Roberts Island); , Roberts Island
Comment
UC635510
Ceratophyllum demersum
H. L. Mason
1928-9-30
4955
San Joaquin
San Joaquin Delta near Holt; San Joaquin Delta
Comment
UC635511
Ceratophyllum demersum
H. L. Mason
1929-9-9
5421
San Joaquin
Holt
Comment
UC555392
Cercis occidentalis
H. L. Mason
1928-5-4
4498
El Dorado
Dugars
Comment
UC1081534
Chaenactis glabriuscula var. glabriuscula
Herbert L. Mason
1936-3-21
11027
Mariposa
3 m n of Coulterville
Comment
UC1178835
Chaenactis glabriuscula var. heterocarpha
Herbert L. Mason
1940-5-3
12267
Merced
nw of Ortigalita Peak; South Coast Ranges, Ortigalita Valley
426
Comment
UC565572
Chaenactis stevioides
H. L. Mason
1926-4-27
3051
San Bernardino
30 mi w of Victorville; Mojave Desert
Comment
UC555297
Chamaebatia foliolosa
H. L. Mason
1926-5-29
3291
Nevada
2 mi w of Emigrant Gap
Comment
UC1192293
Chamaesyce maculata
Herbert L. Mason
1945-9-19
12728
Sutter
e side Butte Creek (West Butte Rd)
Comment
UC635594
Chamaesyce polycarpa
H. L. Mason
1925-4-18
1495
San Diego
hills near San Diego (Navy fuel dock)
Comment
UC570792
Chamaesyce serpillifolia subsp. hirtula
H. L. Mason
1930-10-25
5789
Monterey
between Jolon and Santa Lucia Rnger Staion (along the San Antonio River); foothills of the Santa Lucia Mtns
Comment
UC570786
Chamaesyce serpyllifolia
H. L. Mason
1929-10-4
5456
Placer
4 mi below Colfax
Comment
UC672640
Cheilanthes clevelandii
Herbert L. Mason
1926-5-1
3168
San Diego
Palomar Mt
Comment
UC1191185
Cheilanthes gracillima
Herbert L. Mason
Tuolumne
Jack Main Canyon; Sierra Nevada, Yosemite Nat'l Park
2286
Comment
UC1191334
Chenopodium album
Herbert L. Mason and Verne Grant
1947-7-12
13420
Modoc
s Alturas (irrigation ditch near s end of w side road, along railroad tracks); Pit River Valley
Comment
POM312492
Chenopodium album
H. L. Mason, Verne Grant
1946-8-7
12978
Colusa
8 miles north of Colusa; Butte Sink.
Comment
SEINET5764323
Chenopodium californicum
Herbert L. Mason
1926-1
2813
Alameda
Cedar Mountain
Comment
UC1191342
Chenopodium glaucum
Herbert L. Mason
1948-9-4
13645
Mono
Rush Creek Mono Lake
Comment
UCD98199
Chenopodium glaucum var. salinum
Herbert L. Mason
1948-9-4
13645
Mono
Rush Creek, Mono Lake.
Comment
POM312491
Chenopodium hians
H. L. Mason, Verne Grant
1947-7-10
13345
Modoc
Dorris Reservoir, 2 miles east of Alturas.
Comment
SEINET5765177
Chenopodium hians
Herbert L. Mason
1939-1
12173
El Dorado
N side of Luther Pass, 1 mi W of Grass Lake Meadow
2347
Comment
UC1191347
Chenopodium macrospermum var. halophilum
Herbert L. Mason
1946-6-9
12865
San Luis Obispo
between Oceano and mouth of Santa Maria River; Dune Lakes
Comment
UC1191348
Chenopodium pumilio
Herbert L. Mason and S. Galen Smith
1948-7-29
8250
Merced
salt slough at end Turner Island Road (e of Las Banos)
Comment
SACT000740
Chloris gayana
Herbert Mason, S. Smith
1948-7-27
Merced
Border of wet field, strongly rooting at precumbent nodes, rhizomes. West of salt slough, north of Los Banos on Delta road.
Comment
CAS-BOT-BC246154
Chloropyron molle subsp. hispidum
Herbert L. Mason
1948-6-29
13583
Merced
5 miles north of Volta
Comment
CAS-BOT-BC191151
Chorizanthe diffusa
H. L. Mason
1923-6-15
397
Santa Barbara
Harris Grade, on La Purisima Ridge, between Harris and Lompoc
Comment
CAS-BOT-BC191220
Chorizanthe douglasii
H. L. Mason
1923-6-23
542
Monterey
Carmel River, ten miles above Carmel
Comment
JEPS19625
Chorizanthe obovata
Herbert L. Mason
1946-6-7
12822
Santa Barbara
0.5 mi w Camuesa (Mono Flat); Mono Flat
Comment
SD47975
Chorizanthe obovata
Herbert L Mason
1946-6-7
12822
Santa Barbara
Mono Flat, 0.5 mile west of Camuesa
Comment
CAS-BOT-BC252703
Chorizanthe obovata
Herbert L. Mason
1923-6-22
532
San Luis Obispo
Camp Fremont, just above San Luis Obispo
Comment
UC912602
Chorizanthe polygonoides var. polygonoides
Herbert L. Mason
1934-5-5
8130
Lake
between Kelseyville and Lower Lake; between Kelseyville and Lower Lake
Comment
UC1076087
Chrysolepis chrysophylla var. minor
Herbert L. Mason
1925-10-4
2240
Marin
n side Mt. Tamalpais
Comment
UC1083183
Chrysolepis sempervirens
Herbert L. Mason
1929-10-4
5474
El Dorado
above Glen Alpine; Fallen Leaf Lake
Comment
UC635283
Chylismia claviformis subsp. claviformis
H. L. Mason
1926-4-27
3038
Los Angeles
Rock Creek
Comment
UC673483
Cicuta douglasii
H. L. Mason
1940-7-7
12325
Tuolumne
Tuolumne River drainage sw of Hetch Hetchy ( Yosemite National Park, Poison Meadow); Sierra Nevada, Yosemite National Park, Poison Meadow
1524
Comment
POM257276
Circaea alpina subsp. pacifica
H. L. Mason
1925-7-30
2191
Tuolumne
Smith Peak Trail from Mather
Comment
CAS-BOT-BC285478
Cirsium occidentale var. californicum
Herbert L. Mason
1946-6-7
12831
Santa Barbara
Between Camuesa Creek and Oso Creek, south of Little Pine Mountain
762
Comment
UC912242
Cirsium occidentale var. californicum
Herbert L. Mason
1925-6-24
2103
Tuolumne
Mather
Comment
UC775189
Cirsium occidentale var. venustum
Herbert L. Mason
1940-5-4
12272
Merced
nw of Ortigalita Peak; Inner South Coast Ranges, Piedra Azul Creek
304
Comment
SEINET7836837
Cirsium scariosum
H. L. Mason
1952-7-11
14334
Nevada
Sage Hen Creek, one mile west of University of California Trout Laboratory
1981
Comment
UC912469
Cirsium scariosum var. americanum
Herbert L. Mason
1924-6-18
1048
Plumas
bog n of Greneagle
Comment
CAS-BOT-BC162550
Clarkia affinis
H. L. Mason
1932-4-17
6947
Santa Clara
Uvas-Almaden Road
Comment
UC634707
Clarkia affinis
H. L. Mason
1932-4-17
6947
Santa Clara
Uvas-Almaden Road
Comment
UC634660
Clarkia concinna subsp. concinna
H. L. Mason
1930-6-1
5621
Mendocino
Cloverdale to Fort Bragg; Navarro River
Comment
UC1178878
Clarkia davyi
Herbert L. Mason
1940-5-22
12306
Mendocino
headland n Pudding Creek Slough (near Fort Bragg)
Comment
CAS-BOT-BC164562
Clarkia purpurea subsp. viminea
H. L. Mason
1921-7-3
s.n.
San Mateo
Pescadero - La Honda Road
Comment
UC634703
Clarkia rubicunda
H. L. Mason
1926-5-26
3247
Alameda
Niles Canyon
Comment
CAS-BOT-BC165545
Clarkia unguiculata
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
UC634656
Clarkia unguiculata
H. L. Mason
1926-5-26
3250
Alameda
near Sunol; Niles Canyon
Comment
JEPS43337
Claytonia exigua subsp. exigua
H. L. Mason
1931-4-5
Contra Costa
se of Mt. Diablo (on road from Marsh Creek to Livermore); Upper Marsh Creek
Comment
UC634940
Claytonia exigua subsp. exigua
H. L. Mason
1925-3-10
1296
Contra Costa
higher slopes Mt. Diablo
Comment
UC635331
Claytonia nevadensis
H. L. Mason
1923-9-15
786
Tuolumne
Tioga mines; Sierra Nevada Mountains, Yosemite National Park
Comment
SEINET199763
Claytonia rubra subsp. rubra
H. L. Mason
1926-3-26
11097
Lake
1.5 mi E of Bartlett Springs
Comment
CAS-BOT-BC91427
Clematis lasiantha
H. L. Mason
1926-5-8
s.n.
Monterey
Rancho del Monte Carmel River. Hillside, opposite schoolhouse.
Comment
UC635539
Clematis lasiantha
H. L. Mason
1931-4-19
5845
Monterey
near Santa Lucia Range Station; Santa Lucia Mts.
Comment
UC571104
Cneoridium dumosum
Herbert L. Mason
1925-4-18
1497
San Diego
San Diego; hills back of Navy Fuel Work
Comment
UC1178875
Collinsia callosa
Herbert L. Mason
1935-4-30
8350
Kern
Walker Pass
Comment
UC1178860
Collinsia corymbosa
Herbert L. Mason
1940-5-22
12299
Mendocino
near Fort Bragg (headland n of Pudding Creek Slough)
Comment
UC1178872
Collinsia heterophylla
Herbert L. Mason
1940-5-20
12288
Marin
outcrop back of Tiburon
Comment
UC672479
Collinsia heterophylla
H. L. Mason
1928-5-4
4527
El Dorado
Hastings Creek near Pilot HIll; Hastings Creek
Comment
UC672475
Collinsia parviflora
H. L. Mason
1926-4-11
2851
Alameda
Cedar Mountain and Rancho Repose Mount Hamilton Range, Arroyo Mocho (Arroyo Mocho)
Comment
UC672470
Collinsia sparsiflora var. collina
Herbert L. Mason
1929-3-15
5051
Contra Costa
Nortonville
Comment
UC672482
Collinsia tinctoria
H. L. Mason
1923-7-26
652
Tuolumne
Mather, Hog Ranch Hog Ranch; Mather, Hog Ranch
Comment
CAS-BOT-BC229527
Collomia diversifolia
Herbert L. Mason
1938-5-1
11741
Lake
3 miles E of Middletown
Comment
POM310951
Collomia diversifolia
H. L. Mason
1938-5-1
11741
Lake
3 miles east of Middletown
Comment
UC1191142
Collomia diversifolia
Herbert L. Mason
1953-6-8
14522
Lake
Black Oak Villa Butts Canyon
Comment
UC908723
Collomia heterophylla
Herbert L. Mason
1926-5-29
3278
Nevada
5 mi s Grass Valley; Rattlesnake Creek
609
Comment
UC907910
Collomia linearis
Herbert L. Mason
1925-8-11
2222 a
Tuolumne
Morraine Flat Tuolumne Meadows
2743
Comment
CAS-BOT-BC229514
Collomia rawsoniana
H. L. Mason
1938-7-16
11954
Madera
Cascadel Ranch on a tributary to Whisky Creek, 3 miles E of South Fork
1127
Comment
UC1083154
Conicosia pugioniformis
H. L. Mason
1924-10-19
1121
San Francisco
Merced Lake.
Comment
JEPS21905
Cordylanthus mollis subsp. hispidus
Herbert L. Mason
1948-6-29
13583
Merced
5 mi n Volta (margin of stream)
Comment
UC1191858
Cordylanthus mollis subsp. hispidus
Herbert L. Mason and Malcolm A. Nobs
1948-10-2
697
Merced
Santa Fe grade 6 mi s Los Banos; Alkaline Grasslands of the San Joaquin Valley
Comment
UC566773
Coreopsis bigelovii
Herbert L. Mason
1926-4-27
3046
Los Angeles
between Rock Creek and Little Rock Creek (on Big Pines Recreation Camp road)
Comment
UC1060661
Coreopsis douglasii
Herbert L. Mason
1957-5-11
14733
San Benito
2-3 mi e of Hernandez
Comment
POM289573
Coreopsis stillmanii
H. L. Mason
1936-3-21
11019
Tuolumne
4 miles north of Coulterville
Comment
JEPS22796
Corethrogyne filaginifolia
Herbert L. Mason
1929-9-1
5417
Mendocino
3 mi n Fort Bragg
Comment
UC672323
Corethrogyne filaginifolia
H. L. Mason
1929-10-12
5481
San Luis Obispo
Atascadero Creek
Comment
UC912336
Corethrogyne filaginifolia
Herbert L. Mason
1929-3-2
5032
Monterey
20 mi s Carmel (Big Sur Road); Big Sur Road
Comment
CAS-BOT-BC209811
Cornus glabrata
H. L. Mason
1929-10-12
5486
San Luis Obispo
Along Atascadero Creek, 4.3 miles west of Atascadero
Comment
CAS-BOT-BC210523
Cornus sessilis
Herbert L. Mason
1935-3-14
10984
Calaveras
South fork of the Mokelumne River, about three miles northeast of Glencoe
Comment
RSA13585
Cornus sessilis
H. L. Mason
1935-3-14
10984
Calaveras
South fork of the Mokelumne River, about three miles northeast of Glencoe.
Comment
YM-YOSE63762
Crepis acuminata
Harry L. Mason
1938-7-7
11873
Tuolumne
SWAMP LAKE RESEARCH RESERVE
Comment
UC602783
Crepis nana
H. L. Mason
1936-7-30
11451
Mono
Excelsior Peak
Comment
UC635026
Cressa truxillensis
H. L. Mason
1928-9-2
4943
Alameda
Bay Farm Island
Comment
UC632866
Crocanthemum scoparium var. scoparium
H. L. Mason
1938-5-7
11775
Santa Barbara
Burton Mesa
Comment
UC634895
Crocanthemum scoparium var. vulgare
Herbert L. Mason
1925-4-12
1335
Marin
Pipe line trail Mt. Tamalpais
Comment
UC634907
Crocanthemum scoparium var. vulgare
Herbert L. Mason
1923-6-15
405 a
Santa Barbara
Lapurisma Ridge Harris Grade
Comment
CAS-BOT-BC299710
Crocidium
H. L. Mason
1929-4-29
5443
Lake
About three miles west of Lakeport on Hopland Road
Comment
CAS-BOT-BC190083
Crypsis schoenoides
Herbert L. Mason
1945-7-11
12642
Colusa
Near Butte Creek. Butte Lodge Outing Club, three miles above Colusa.
Comment
CAS-BOT-BC190086
Crypsis schoenoides
Herbert L. Mason
1945-7-11
12642
Colusa
Near Butte Creek. Butte Lodgd Outing Club, three miles above Colusa.
Comment
POM313218
Crypsis schoenoides
H. L. Mason
1945-9-19
12729
Butte
Gray Lodge Game Refuge, northwest of Pennington
Comment
UCD59935
Crypsis schoenoides
H. L. Mason
1945-7-11
12642
Sutter
Northeast of Colusa, along Butte Creek.
Comment
UC1100189
Crypsis vaginiflora
Herbert L. Mason
1945-9-19
12718
Colusa
below causeway over Butte Sink spillway (e bank of river, 1 mi above Colusa); Sacramento River, Butte Sink
Comment
UC573088
Cryptantha flaccida
H. L. Mason
1928-6-28
4861
Mariposa
Wawona
Comment
UC573096
Cryptantha flaccida
H. L. Mason
1926-4-11
2853
Alameda
Cedar Mountains and Rancho Repose Mount Hamilton Range
Comment
UC573134
Cryptantha micrantha
Herbert L. Mason
1932-4-1
6867
Los Angeles
1 mi e Lancaster; Mojave Desert
Comment
UC573070
Cryptantha pterocarya
H. L. Mason
1932-4-1
6866
Los Angeles
1 mi e Lancaster; Mojave Desert
Comment
UC573128
Cryptantha virginensis
H. L. Mason
1934-3-28
8027
Inyo
Near summit of Panamint Range, Townsend (Towne's ?) Pass.
Comment
UC1201231
Cupressus arizonica subsp. nevadensis
Herbert L. Mason
1956-3-29
14662
Kern
n-facing slopes s Bodfish; Piute Mountains
1066
Comment
CAS-BOT-BC80663
Cupressus goveniana
Herbert Louis Mason
1922-3-28
s.n.
Santa Cruz
Sandstone cliffs near Bonnie Doon.
Comment
JEPS21188
Cupressus goveniana subsp. pygmaea
Herbert L. Mason
1928-8-25
4920
Mendocino
1 mi e of mouth of Noyo River; Noyo Mesa
Comment
UC1076279
Cupressus goveniana subsp. pygmaea
Herbert L. Mason
1928-10-21
5009
Mendocino
no of Fort Bragg; Pudding Creek
Comment
UC963134
Cupressus goveniana subsp. pygmaea
Herbert L. Mason
1946-5-18
12767
Mendocino
White Plains, 1 1/2 mi E of Mendocino City
Comment
JEPS21187
Cupressus macnabiana
H. L. Mason
1925-1-22
1208
Napa
Pope Canyon
Comment
UC1179017
Cupressus macnabiana
Herbert L. Mason
1932-7-21
7113
Shasta
hills w Redding
Comment Read comments Oct 13 2006
NY16756
Cupressus macrocarpa
H. L. Mason
1934-10-21
10023
Monterey
Point Lobos
Comment
SEINET10834044
Cupressus pygmaea
Herbert L. Mason
1934-9-3
Mason 8147
Mendocino
White plains three miles east of Mendocino City.
Comment
CAS-BOT-BC85504
Cupressus sargentii
Herbert Louis Mason
1926-4-16
s.n.
Alameda
Type locality: Cedar Mountain. Near the summit growing in volcanic rock
Comment
POM195486
Cupressus sargentii
H. L. Mason
1926-4-16
s.n.
Alameda
Cedar Mountain, near the summit
Comment
UC1083214
Cupressus sargentii
Herbert L. Mason
1926-1-2
2606
Napa
Toll House Canyon Mt. St. Helena, Toll House Canyon
Comment
UC1077085
Cuscuta californica
Herbert L. Mason
1938-7-22
11976
Tuolumne
n of Hetch Hetchy (Vernon Lake Trail); Yosemite National Park
2072
Comment
UC1191660
Cuscuta indecora
Herbert L. Mason and Verne Grant
1946-8-6
12974
Colusa
2.7 mi n Colusa (between Sacramento River and Butte Creek); Butte Sink
Comment
UC635241
Cuscuta indecora
H. L. Mason
Aug 1930
5715
Lake
Clear Lake
Comment
UCD126319
Cuscuta indecora var. indecora
Herbert L. Mason; Verne Grant
1946-8-6
12974
Colusa
2.7 miles north of Colusa between Sacramento River and Butte Creek.
Comment
POM312612
Cuscuta salina
H. L. Mason, Malcom A. Nobs
1948-10-2
706
Fresno
Mendota Pool
Comment
UC1191659
Cuscuta subinclusa
Herbert L. Mason and Verne Grant
1947-6-26
13247
Solano
Cordelia Slough Suisun Marsh
Comment
UC566942
Cycladenia humilis var. venusta
Herbert L. Mason
1927-6-15
3782
San Bernardino
cirque s. of Baldy; San Gabriel Mts.
2743
Comment
UC912635
Cynodon dactylon
Herbert L. Mason
1926-5-24
3229
Alameda
Berkeley, Univ of Calif Campus
Comment
SEINET200026
Cyperus aristatus
Herbert L. Mason
1946-7-27
12949
Lake
Clear Lake 2-3 miles N of Lakeport.
Comment
UC1100545
Cyperus difformis
Herbert L. Mason
1945-9-18
12705
Sutter
Sutter By-pass near bridge on Yuba City - Knight's Landing Hwy.
Comment
UC1100547
Cyperus difformis
Herbert L. Mason and Verne Grant
1946-8-7
12983
Colusa
8 mi. n. Colusa (Butte Sink); Butte Sink
Comment
POM313105
Cyperus difformis
H. L. Mason, S. Galen Smith
1948-8-17
8341
Fresno
King s River east of Burrel, San Joaquin Valley
Comment
UC1100521
Cyperus eragrostis
Herbert L. Mason and S. Galen Smith
1948-8-9
8289
Santa Clara
ca. 10 mi. w. of summit Pacheco Pass (Pacheco Creek); Pacheco Creek
Comment
UC1100527
Cyperus eragrostis
Herbert L. Mason and Verne Grant
1946-9-5
13117
Colusa
1.6 mi. w. Williams (rd. to Lake Co.)
Comment
UC1100528
Cyperus eragrostis
Herbert L. Mason and Verne Grant
1946-9-5
13113
Colusa
1.6 mi. w. Williams (rd. to Lake Co.)
Comment
UC1100530
Cyperus eragrostis
Herbert L. Mason and Verne Grant
1946-8-28
13083
San Mateo
at entrance to county prison San Francisco
Comment
UCD141081
Cyperus eragrostis
Herbert L. Mason; S. Galen Smith
1948-8-9
8289
Merced
Pacheco Creek, about 10 miles west of summit of Pacheco Pass.
Comment
CAS-BOT-BC114385
Cyperus erythrorhizos
Herbert L. Mason
1945-9-19
12724
Colusa
Below causway over Butte Sink spillway, E bank of Sacramento River, 1 mi N of Colusa.
Comment
CAS-BOT-BC114386
Cyperus erythrorhizos
Herbert L. Mason
1945-9-19
12724
Colusa
Below causway over Butte Sink spillway, E bank of Sacramento River, 1 mi N of Colusa.
Comment
UC1100673
Cyperus erythrorhizos
Herbert L. Mason and S. Galen Smith
1948-9-5
549
Imperial
canal above Laguna Dam (Lower Colorado); Lower Colorado
Comment
UC1100639
Cyperus niger
Herbert L. Mason and S. Galen Smith
1948-8-19
8382
Merced
marsh 1 mi. w. Snelling
Comment
UCD141201
Cyperus niger
Herbert L. Mason; Verne Grant
1946-9-27
13141
Butte
three miles west of Biggs.
Comment
UCD141202
Cyperus niger
Herbert L. Mason; S. Galen Smith
1948-8-12
8331
Merced
Gustine Gun Club, 3 miles east of Gustine.
Comment
CAS-BOT-BC113826
Cyperus niger var. capitatus
Herbert L. Mason; Stanley Galen [S. Galen] Smith
1948-8-12
8331
Merced
Gustine Gun Club, 3 mi E of Gustine.
Comment
UC1100636
Cyperus rotundus
Herbert L. Mason and S. Galen Smith
1948-8-18
8349
Kings
just w. of Stratford; San Joaquin Valley
Comment
CAS-BOT-BC114107
Cyperus squarrosus
Herbert L. Mason
1945-8-24
12686
Lake
East Shore, Lower Lake.
Comment
UCSB46427
Cyperus squarrosus
Mason, H.
1938-8-1
Tuolumne
Tiltill Valley, Yosemite National Park
1676
Comment
CAS-BOT-BC114173
Cyperus squarrosus
H. L. Mason
1938-7-10
11903
Tuolumne
Margin of lake at gravel pit, Miguel Meadow, west of Hetch-Hetchy.
1584
Comment
POM313107
Cyperus squarrosus
H. L. Mason, S. Galen Smith
1948-7-29
8247
Merced
Salt slough, at end of Turner Island road, east of Los Banos
Comment
UCD141107
Cyperus squarrosus
Herbert L. Mason; S. Galen Smith
1948-7-29
8247
Merced
at end of Turner Island Road. East of Los Banos.
Comment
UCD141108
Cyperus squarrosus
Herbert L. Mason; S. Galen Smith
1948-8-19
8377
Merced
San Joaquin River, bridge below Snelling.
Comment
UCD141158
Cyperus strigosus
H. L. Mason
1945-9-18
12702
Sutter
Sutter By-pass near bridge on Yuba City. Knight's Landing Highway.
Comment
POM313067
Cyperus strigosus
H. L. Mason
1945-9-18
12702
Sutter
Margins of pools on overflow lands of Sutter by-pass near bridge on Yuba City-Knight's Landing highway.
Comment
CAS-BOT-BC435170
Cypselea humifusa
Herbert L. Mason
1945-8-24
12684
Lake
East shore, Lower Lake
Comment
POM312386
Cypselea humifusa
H. L. Mason
1945-8-24
12684
Lake
East shore, Lower Lake.
Comment
UCD96982
Cypselea humifusa
Herbert L. Mason
1945-8-24
12684
Lake
East shore, Lower Lake.
Comment
CAS-BOT-BC70629
Cystopteris fragilis
H. L. Mason
1936-7-29
11439
Mono
Conness Cirque near Saddlebag Lake, Tioga Pass region, Sierra Nevada
Comment
UC1191181
Cystopteris fragilis
Herbert L. Mason
1937-7-24
14065
Tuolumne
n of Hetch Hetchy Dam Beehive; Sierra Nevada, Yosemite Nat'l Park
2011
Comment
UC1100154
Damasonium californicum
Herbert L. Mason
1928-4-13
4325
Sonoma
near Petaluma Petaluma
Comment
UC1100150
Damasonium californicum
Herbert L. Mason
1947-8-12
13514
Modoc
s. of Opahwah Butte near Alturas
Comment
UC634824
Darlingtonia californica
Herbert L. Mason
1926-4-19
2887
Trinity
Comment
UC1191583
Datisca glomerata
Herbert L. Mason, S. Galen Smith
1948-8-9
8282
Santa Clara
about 10 mi w of summit of Pacheco Pass (Pacheco Creek); Pacheco Creek
Comment
UC635722
Datisca glomerata
H. L. Mason
1932-8-26
7145
Mendocino
Navarro River
Comment
UC912273
Deinandra corymbosa
Herbert L. Mason
1926-6-15
3393
Alameda
campus Berkeley University of California at Berkeley
Comment
UC1191432
Delphinium
Herbert L. Mason
1948-7-18
13626
Siskiyou
Grass Lake
Comment
UC635353
Delphinium cardinale
H. L. Mason
1923-6-18
508
Ventura
Red Reef Canyon Topatopa Mountains
Comment
UC635339
Delphinium cardinale
H. L. Mason
1927-6-15
3788
Los Angeles
wash of the San Gabriel River
Comment
UC912675
Delphinium hansenii
H. L. Mason
1923-7-21
632
Tuolumne
Hetch Hetchy Sierra Nevada Mountains
Comment
CAS-BOT-BC10257
Delphinium hansenii
Herbert L. Mason
1938-7-7
11874
Tuolumne
Ridge east of Swamp Lake, between Swamp Lake and Hetch Hetchy
1676
Comment
UC912567
Delphinium hesperium subsp. pallescens
H. L. Mason
1928-4-29
4423
Contra Costa
s slope of mt Mount Diablo, Sycamore Canyon
Comment
CAS-BOT-BC9919
Delphinium nudicaule
Herbert L. Mason
1931-3-13
5814
Alameda
Lake Chabot
Comment
UC635357
Delphinium nudicaule
H. L. Mason
1926-3-14
2723
Napa
Mount Saint Helena
Comment
CAS-BOT-BC9967
Delphinium nudicaule
Herbert L. Mason
1917-4-28
s.n.
Marin
Mt. Tamalpias
Comment
UC965556
Delphinium nuttallianum
Herbert L. Mason
1952-7-11
14331
Nevada
rocky margin of quaking bog at head of meadow 1 mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
CAS-BOT-BC116454
Delphinium patens subsp. patens
H. L. Mason
1928-4-29
4440
Contra Costa
Sycamore Canyon, south slope of Mount Diablo
Comment
UC1199834
Delphinium polycladon
Herbert L. Mason and L. W. Reinecke
1937-7-30
14817
Tuolumne
above Mary Lake; Sierra Nevada, Saurian Crest
3048
Comment
JEPS20987
Dendromecon harfordii
Herbert L. Mason
1927-9-25
4105
Santa Barbara
along roadway through Buena Vista Canyon Santa Cruz Island
Comment
UC1083123
Dendromecon rigida
Herbert L. Mason
1936-4-10
11055
Calaveras
ridge between Sheep Ranch and Murphys
Comment
UC634891
Dendromecon rigida
H. L. Mason
1926-5-29
3284 a
Nevada
Donner Pass Road near Alta
Comment
UC635446
Dendromecon rigida
Herbert L. Mason
1925-4-12
1339
Marin
Pipe line trail Mt. Tamalpais
Comment
UC635451
Dendromecon rigida
H. L. Mason
1923-6-15
406
Santa Barbara
Harris Grade La Purisma Ridge
Comment
CAS-BOT-BC632
Dendromecon rigida subsp. rigida
Herbert L. Mason
1921-7-1
s.n.
San Mateo
Butano Ridge.
Comment
SEINET3927273
Deschampsia cespitosa
Herbert L. Mason
1952-8-16
14491
Nevada
Meadow opposite University of California Trout Laboratory.; 0
1981
Comment
CAS-BOT-BC192600
Deschampsia cespitosa subsp. holciformis
H. L. Mason
1921-5-28
s.n.
San Mateo
Pebble Beach near Pescadero
Comment
CAS-BOT-BC192612
Deschampsia cespitosa subsp. holciformis
Herbert L. Mason
1946-7-4
12885
Sonoma
Pitkin Marsh, between Santa Rosa and Forestville
Comment
UC912580
Deschampsia danthonioides
Herbert L. Mason
1928-5-3
4444
San Joaquin
4 mi. n. Clememts
Comment
UC965507
Deschampsia elongata
Herbert L. Mason
1952-8-16
14468
Nevada
meadow opposite U.C. Trout Lab. (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
UC642887
Descurainia californica
H. L. Mason
1936-7-31
11459
Mono
e of Saddlebag Lake (Tioga Crest); Sierra Nevada, Tioga Pass Region
3413
Comment
UC634899
Dicentra formosa
Herbert L. Mason
1927-5-11
3734
Yuba
near Bullards Bar; Yuba River Canyon
609
Comment
CAS-BOT-BC612
Dicentra formosa subsp. formosa
Herbert L. Mason
1926-2-21
2649
Marin
Road from Inverness to Point Reyes Lighthouse.
Comment
CAS-BOT-BC402378
Dicentra formosa subsp. formosa
Herbert L. Mason
1927-5-11
3734
Yuba
Near Bullards Bar
609
Comment
UC1111567
Dicentra uniflora
Herbert L. Mason
1938-7-28
12024
Tuolumne
e of Tilden Lake (Macomb Ridge); Sierra Nevada, Yosemite National Park
3048
Comment
UC635734
Dichelostemma ida-maia
H. L. Mason
1928-7-20
4909
Humboldt
South Fork Mountain
Comment
UC634885
Dichondra donelliana
H. L. Mason
1927-4-26
5217
Marin
open hills on w side Bolinas Ridge; ; W side of Bolinas Ridge, Marin Co.
Comment
UC1100289
Digitaria ischaemum
Herbert L. Mason
1945-9-19
12722 a
Colusa
1 mi n Colusa (below causeway over Butte Sink spillway, e bank Sacramento River); e bank Sacramento River, Butte Sink spillway
Comment
CAS-BOT-BC209043
Digitaria sanguinalis
Herbert L. Mason; S. Galen Smith
1948-7-28
8229
Fresno
San Joaquin River at Firebaugh
Comment
SACT000973
Digitaria sanguinalis
Herbert Mason, S. Smith
1948-7-28
Fresno
Rooting at nodes.
Comment
UC1093882
Dirca occidentalis
Herbert L. Mason
1943-5-25
14798
Alameda
San Leandro Canyon
Comment
UC635712
Dirca occidentalis
H. L. Mason
1925-2-12
1238
Alameda
head of San Leandro Canyon Oakland Hills
Comment
UC1039539
Dodecatheon alpinum
H. L. Mason
1923-8-6
714
Tuolumne
Yosemite National Park , Yosemite National Park (Sierra Nevada Mountains)
Comment
UC1199861
Dodecatheon alpinum
H. L. Mason
1923-8-25
354
Mariposa
Snow Flat Sierra Nevada Mountains, Yosemite National Park
Comment
UC1199862
Dodecatheon alpinum
H. L. Mason
1922-8-26
358
Mono
Mono Pass Sierra Nevada Mountains, Yosemite National Park (at Park boundary, Yosemite National Park)
Comment
UC673487
Dodecatheon clevelandii subsp. insulare
H. L. Mason
1934-4-1
8058 a
San Luis Obispo
road from Cambria to Paso Robles; road from Cambria to Paso Robles
Comment
UC1039536
Dodecatheon clevelandii subsp. patulum
Herbert L. Mason
1929-3-15
5044
Contra Costa
Nortonville
Comment
UC635473
Dodecatheon clevelandii subsp. patulum
H. L. Mason
1934-4-4
8058
Contra Costa
Marsh Creek Road
Comment
UC635700
Dodecatheon clevelandii subsp. patulum
H. L. Mason
1927-3-11
3651 a
San Francisco
Bernal Heights , Bernal Heights (San Francisco)
Comment
UC673363
Dodecatheon clevelandii subsp. patulum
Herbert L. Mason
1925-3-1
1261
San Francisco
Bernal Heights San Francisco, Bernal Heights
Comment
POM312860
Dodecatheon hansenii
H. L. Mason
1936-3-14
10971
Calaveras
On road between San Andreas and Mokelumne Hill.
Comment
JEPS23915
Dodecatheon hendersonii
H. L. Mason and H. A. Borthwick
1921-3-20
Santa Clara
Guadalupe Canyon
Comment
UC1111024
Dodecatheon hendersonii
Herbert L. Mason
1926-3-7
2700
Contra Costa
Mt. Diablo
Comment
RSA112452
Dodecatheon hendersonii subsp. cruciatum
H. L. Mason
1917-3-8
62
Alameda
Kings Mt.
Comment
UC1014776
Dodecatheon jeffreyi
H. L. Mason
1923-8-1
685
Tuolumne
along trail from Tuolumne Meadows to Elizabeth Lake (Yosemite National Park); Sierra Nevada Mountains, Yosemite National Park
Comment
UC1093942
Dodecatheon jeffreyi
Herbert L. Mason
1941-7-7
12503
Madera
sphagnum bog just s Givens Lake trail junction (Yosemite National park); Sierra Nevada, Yosemite National Park
2865
Comment
UC1191693
Dodecatheon jeffreyi
Herbert L. Mason
1936-7-7
11151
Mariposa
w Dark Hole (Research Reserve, Yosemite National Park); Sierra Nevada, Yosemite National Park, w of Dark Hole
2438
Comment
UC673497
Dodecatheon jeffreyi
H. L. Mason
1922-7-22
318
Tuolumne
Aspen Valley Sierra Nevada Mountains, Yosemite National Park
Comment
UC1014773
Dodecatheon jeffreyi
H. L. Mason
1922-8-2
338
Tuolumne
Lower Lyell Fork Tuolumne River Sierra Nevada Mountains, Yosemite National Park (Tuolumne Meadows, Yosemite National Park)
Comment
UC1039579
Dodecatheon jeffreyi
H. L. Mason
1922-8-2
338
Tuolumne
Lyell Fork Tuolumne River Sierra Nevada Mountains, Yosemite National Park (Tuolumne Meadows)
Comment
UCD119021
Dodecatheon jeffreyi
Herbert L. Mason
1936-7-7
11151
Mariposa
Research Reserve, west of Dark Hole. Yosemite National Park, Sierra Nevada.
2438
Comment
UC673403
Dodecatheon subalpinum
Herbert L. Mason
1928-7-3
4867
Mariposa
head of Yosemite Creek grade Yosemite Creek drainage, Tioga Road (Tioga Road, Yosemite Creek drainage)
Comment
UC1039533
Dodecatheon subalpinum
Herbert L. Mason
1923-7-28
657
Tuolumne
Tioga Road between Yosemite Creek bridge and Porcupine Flat; Yosemite National Park, btw Yosemite Crk bridge and Porcupin
Comment
POM311107
Downingia bacigalupii
H. L. Mason
1952-7-17
14384
Sierra
1.5 miles E of Calpine at junction of Calpine with Sierraville-Beckwourth road; Sierra Valley; Sierra Nevada.
1524
Comment
UC965545
Downingia bacigalupii
Herbert L. Mason
1952-7-19
14441
Sierra
1.5 mi e Calpine (at junction of Calpine with Sierraville-Beckwourth road); Sierra Nevada, Sierra Valley
1524
Comment
UC1101474
Downingia bicornuta var. bicornuta
Herbert L. Mason
1945-6-29
12619
Lake
Boggs Lake at base of Mount Hanna Mount Hanna, Boggs Lake
Comment
JEPS21908
Downingia laeta
Herbert L. Mason and Verne Grant
1947-7-11
13369
Modoc
s of Alturas (by Jones Lane, off Highway 395)
Comment
UC1189249
Downingia montana
Herbert L. Mason
1939-7-13
12140
Tuolumne
woods around Miguel Meadows Yosemite National Park
Comment
UC635663
Downingia pulchella
H. L. Mason
1932-4-17
6956
Santa Clara
sw of Gilroy (Miller and Lux Ranch)
Comment
UC769993
Downingia pusilla
Herbert L. Mason
1934-3-25
7935
Sacramento
Rio Linda, Keithly ranch Sacramento Valley
Comment
UC1025276
Draba breweri
Herbert L. Mason
1936-7-24
11321
Tuolumne
White Mountain Sierra Nevada
Comment
CAS-BOT-BC401569
Drosera rotundifolia
H. L. Mason
1930-8-1
5738
Mendocino
Fort Bragg
Comment
UC634822
Drosera rotundifolia
H. L. Mason
June 1930
5638
Mendocino
Fort Bragg
Comment
UC673314
Drymocallis glandulosa var. wrangelliana
Herbert L. Mason
1924-5-13
1006
Alameda
Berkeley Hills
Comment
UC965560
Drymocallis lactea
Herbert L. Mason
1952-7-16
14372
Nevada
one mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC571157
Dudleya cymosa subsp. paniculata
H. L. Mason
1926-5-26
3251
Alameda
Niles Canyon
Comment
CAS-BOT-BC113785
Dulichium arundinaceum
Herbert L. Mason
1958-8-9
14848
Tuolumne
Swamp Lake, west of Hetch Hetchy Dam
1584
Comment
RSA28606
Eastwoodia elegans
H. L. Mason
1941-7-3
12490
Santa Barbara
Head of Cuyama Valley, fourteen miles west of Maricopa
762
Comment Read comments Apr 29 2014
SEINET12218629
Echeveria
R. E. Mason
1946-1
s.n.
Unknown
Oakland
Comment
UC912246
Eclipta prostrata
Herbert L. Mason
1928-9-30
4966
San Joaquin
near Holt; San Joaquin Delta
Comment
CAS-BOT-BC445825
Egeria densa
H. L. Mason
1938-8-26
12075
San Joaquin
Trapper Slough, Robert's Island, southwest of Holt
Comment
SEINET12902603
Egeria densa
H. L. Mason
1938-1
12075
Unknown
Comment
POM312838
Eichhornia crassipes
H. L. Mason, Verne Grant
1946-8-21
13063
San Joaquin
West of Stockton on Borden Hwy; Marsh Plant Survey.
Comment
UC1101555
Elatine ambigua
Herbert L. Mason and Verne Grant
1946-8-15
13052
Butte
near caretaker's house (833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge
Comment
UC1101557
Elatine ambigua
Herbert L. Mason
1946-8-15
13051
Butte
near caretaker's house (#833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge
Comment
UC1101551
Elatine brachysperma
Herbert L. Mason
1923-7-15
608
Tuolumne
2 mi w Mather (Salt Log Meadow)
Comment
SEINET6626571
Elatine brachysperma
Herbert L. Mason
1936-1
12757
Tuolumne
0.5 mile west of Mather, Sierra Nevada
Comment
UCD110449
Elatine californica
Herbert L. Mason
1936-9-20
11535
Lake
Base of trail; sheep corral to Snow Mountain.
Comment
UCD110450
Elatine chilensis
Herbert L. Mason
1933-9-2
7265
Alpine
Silver Lake, Sierra Nevada.
Comment
SEINET4853241
Elatine gracilis
Herbert L. Mason
1952-8-17
14494
Sierra
0.4 mi S of Little Truckee River bridge.
1921
Comment
UC1101552
Elatine heterandra
Herbert L. Mason
1945-6-29
12625
Lake
Boggs Lake base of Mt, Hanna
Comment
UC1111019
Elatine heterandra
Herbert L. Mason
1937-5-27
11554 b
Lake
s side Mt. Konocti
Comment
RSA312321
Elatine heterandra
H. L. Mason
1953-6-8
14547
Lake
Snows Lake.
Comment
UC1101533
Elatine triandra
Herbert L. Mason
1933-9-2
7265
Amador
Silver Lake Sierra Nevada
Comment
UC1101536
Elatine triandra
Herbert L. Mason
1933-9-2
7257
Amador
Silver Lake Sierra Nevada
Comment
UC1101539
Elatine triandra
Herbert L. Mason
1947-8-8
13464 A
Modoc
nw Alturas (sw margin of Big Sage Reservior)
Comment
UC1100612
Eleocharis bella
Herbert L. Mason
1947-8-13
13526
Modoc
N of Canby (NE side of F reservoir)
Comment
UC1100615
Eleocharis bella
Herbert L. Mason, Lawrence W. Reinecke
1937-7-22
11598
Tuolumne
Swamp Lakes, just S of Miguel Meadows and W of Hetch Hetchy Dam Yosemite National Park
Comment
UC1102957
Eleocharis bella
Herbert L. Mason
1958-8-6
14868
Tuolumne
meadow at Swamp Lake, W side of Hetch Hetchy Dam Sierra Nevada, Yosemite National Park
1584
Comment
UC632770
Eleocharis bella
Herbert L. Mason
1938-7-13
11948
Mariposa
Yosemite Valley, base of El Capitan Sierra Nevada, Yosemite National Park
1226
Comment
UC1100608
Eleocharis bolanderi
Herbert L. Mason
1938-7-25
Tuolumne
ca. 4 mi N of Hetch Hetchy Lake (Snow-pool marsh, 1 mi S of Vernon Lake on trail to Beehive); Yosemite National Park
1981
Comment
CAS-BOT-BC184098
Eleocharis coloradoensis
Herbert L. Mason
1947-8-12
13512
Modoc
Junction of North and South forks of Pit River, Alturas
Comment
UC1100607
Eleocharis coloradoensis
Herbert L. Mason
1947-8-8
13463
Modoc
NW of Alturas (SW margin of Big Sage Reservoir)
Comment
CAS-BOT-BC113407
Eleocharis flavescens var. flavescens
Herbert L. Mason; Stanley Galen [S. Galen] Smith
1948-8-19
8376
Merced
San Joaquin River, bridge below Snelling.
Comment
UC1100588
Eleocharis flavescens var. flavescens
Herbert L. Mason, S. Galen Smith
1948-1
8376
Merced
bridge below Snelling (San Joaquin River)
Comment
UC1100726
Eleocharis macrostachya
Herbert L. Mason, S. Galen Smith
1948-8-17
8337
Kings
Grayson
Comment
UC1100743
Eleocharis macrostachya
Herbert L. Mason
1947-8-15
13560
Modoc
spring leading into W side of Goose Lake, 11 mi from Davis Creek
Comment
POM313062
Eleocharis parishii
H. L. Mason
1948-9-2
13628
Kern
Walker Pass
Comment
CAS-BOT-BC451538
Elodea canadensis
H. L. Mason
1939-6-9
12104 a
San Joaquin
About 9 miles southeast of Stockton at junction of Austin Road and Little John Creek
Comment
UC632739
Elodea canadensis
H. L. Mason
1939-4-16
12080
San Joaquin
about 9 mi se Stockton (at junction of Austin Road and Little John Creek); Burnham Quad.
Comment
CAS-BOT-BC451524
Elodea canadensis
Herbert L. Mason
1948-6-29
13589
Merced
Delta road, 3 miles east of Los Banos [Banos]
Comment
UCD61430
Elymus elymoides
H. L. Mason
1936-7-23
11313
Tuolumne
Mt. Conness, Yosemite Natl. Park.
Comment
UCD61488
Elymus elymoides
H. L. Mason
1936-7-27
11389
Tuolumne
Gaylor Lakes, west of Tioga Pass, Yosemite Natl. Park.
Comment
UC965491
Elymus trachycaulus
Herbert L. Mason
1952-8-16
14475
Nevada
meadow opposite University of California Trout Laboratory; Sage Hen Creek
1981
Comment
UC1178980
Emmenanthe penduliflora
Herbert L. Mason
1946-5-30
12810
Lake
East of Indian Valley, North Fork of Cache Creek
548
Comment
UC1039627
Emmenanthe rosea
Herbert L. Mason
1935-5-9
8309
Stanislaus
Red Mountains, Arroyo del Puerto, Mount Hamilton Range
Comment
UC1093646
Ephedra trifurca
Herbert L. Mason
1957-3-31
14683
Imperial
near Yuma (desert w of the sand hills)
Comment
UC1191734
Epilobium brachycarpum
Herbert L. Mason and Verne Grant
1947-7-10
13334
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
UC634652
Epilobium canum subsp. canum
H. L. Mason
1930-10-25
5781
Monterey
between Santa Lucia Ranger Station (along river, foothills of mts.); Santa Lucia Mountains, San Antonio River
Comment
UC634654
Epilobium canum subsp. canum
H. L. Mason
1927-10-4
4123
Santa Cruz
mouth of Waddell Creek Ano Nuevo Point
Comment
UC634752
Epilobium canum subsp. canum
Herbert L. Mason
1923-11-12
852
Contra Costa
lower slopes Mt. Diablo
Comment
UC1191745
Epilobium ciliatum subsp. ciliatum
Herbert L. Mason
1948-9-4
13656
Mono
Rush Creek Mono Lake
Comment
UC965552
Epilobium densiflorum
Herbert L. Mason
1952-7-17
14380
Plumas
along Western Pacific tracks just s Beckwourth; Sierra Valley
1524
Comment
UC712635
Epilobium hornemannii subsp. hornemannii
H. L. Mason
1936-7-31
11474
Mono
e Saddlebag Lake; Sierra Nevada, Tioga Pass region, Tioga Crest
3413
Comment
UC1056443
Epilobium obcordatum
Herbert L. Mason
1938-7-30
Tuolumne
Tower Peak Sierra Nevada, Yosemite National Park (near summit)
Comment
UC635384
Epilobium obcordatum
H. L. Mason
1923-9-19
784
Tuolumne
upper lake Sierra Nevada Mountains, Yosemite National Park, Gaylor Lake (near Tioga Mines)
Comment
POM310939
Epilobium oregonense
H. L. Mason
1952-7-16
14345
Nevada
Sage Hen Creek, 1 mile W of University of California Trout Laboratory.
1982
Comment
UC1191613
Epilobium pallidum
Herbert L. Mason and Verne Grant
1947-7-13
13441
Modoc
on Hwy 395 n Davis Creek (e side of lake, near roadside); Goose Lake, Joseph Creek
Comment
UC912688
Equisetum X ferrissii
Herbert L. Mason
1936-7-12
11212
Mariposa
Yosemite Valley; Yosemite Valley, Merced River
Comment
UC1076463
Equisetum hyemale subsp. affine
H. L. Mason
June 1930
5673
Marin
Inverness Ridge
Comment
POM312960
Equisetum laevigatum
H. L. Mason
1953-7-7
14557
Sierra
N of Sattley, Sierra Valley.
Comment
CAS-BOT-BC213559
Eragrostis hypnoides
Herbert L. Mason; S. Galen Smith
1948-8-18
8348 A
Kings
Along a canal just west of Stratford
Comment
UC1100249
Eragrostis hypnoides
Herbert L. Mason
1945-8-24
12678
Lake
e shore Lower Lake; e shore Lower Lake
Comment
UCD63369
Eragrostis hypnoides
Herbert L. Mason; S. Galen Smith
1948-8-18
8348 -A
Kings
Along a canal just west of Stratford.
Comment
UC1575670
Eragrostis lutescens
Herbert L. Mason and S. Galen Smith
1948-7-29
8253
Merced
at end of Turner Island road e Los Banos
Comment
UC1076197
Eremalche parryi
Herbert L. Mason
1940-5-3
12256
Merced
2 mi. n.e. Ortigalita; S. Coast Ranges, Ortigalita Canyon
304
Comment
UC634838
Eremalche parryi
H. L. Mason
1930-3-30
5537
San Benito
14 mi. below Pinnacles; San Benito R. Canyon
Comment
UC581163
Eremalche rotundifolia
H. L. Mason
1935-3-29
8231
San Bernardino
1 mi. s. Trona (w. side Searles Lake); Mojave Desert, Searles Lake
Comment
POM310908
Eriastrum abramsii
H. L. Mason
1935-5-3
8302
Santa Clara
Above Arroyo Bayo Creek, Mount Hamilton Range
610
Comment
SEINET4407887
Eriastrum brandegeeae
H. L. Mason
1945-1
12604
Lake
Comment
UC1051493
Eriastrum diffusum subsp. coachellae
Herbert L. Mason
1952-4-7
14214
Riverside
Palm Springs Palm Canyon.
Comment
CAS-BOT-BC514478
Eriastrum eremicum subsp. eremicum
Herbert L. Mason
1926-4-27
3070
San Bernardino
Near Victorville
Comment
CAS-BOT-BC514846
Eriastrum pluriflorum subsp. pluriflorum
Herbert L. Mason
1941-7-3
12489
Santa Barbara
Head of Cuyama Valley, 14 mi W of Maricopa
762
Comment
UC1178959
Eriastrum signatum
Herbert L. Mason
1957-7-5
14714
Lassen
s Madeline; Madeline Plains
Comment
CAS-BOT-BC286924
Ericameria ericoides
Herbert L. Mason
1928-10-3
4993 a
Monterey
10 miles up Carmel River
Comment
GH387385
Ericameria ericoides
H. L. Mason
1936-9-13
11525
Unknown
Prunedale, nine miles north of Salinas
Comment
GH387403
Ericameria ericoides
H. L. Mason
1936-9-13
11525
Unknown
Prunedale, nine miles north of Salinas
Comment
UC1093967
Ericameria ericoides
Herbert L. Mason
1930-9-1
5909
Monterey
hills at upper end Elkhorn Slough (between Watsonville and Castroville)
Comment
UC1540464
Ericameria ericoides
Herbert L. Mason
1936-9-13
11525
Monterey
nine mi n Salinas; Prunedale
Comment
CAS-BOT-BC286935
Ericameria ericoides
Herbert L. Mason
1936-9-13
11525
Monterey
Prunedale, nine miles north of Salinas
Comment
UC581132
Ericameria linearifolia
H. L. Mason
1934-3-28
8010
Kern
4 mi e Onyx; Kern River Canyon
Comment
UC912314
Ericameria linearifolia
Herbert L. Mason
1926-4-26
2968
Los Angeles
summit of 1st grade, Mint Canyon Road
Comment
UC1192131
Ericameria nauseosa var. oreophila
Herbert L. Mason and Verne Grant
1947-7-12
13409
Modoc
sw of Alturas (w side of the South Fork of Pit River Valley; Vernal pool); South Fork of Pit River Valley
Comment
YM-YOSE63810
Erigeron breweri
Harry L. Mason
1938-7-7
11869
Tuolumne
SWAMP LAKE RESEARCH RESERVE
Comment
UC1178977
Erigeron coulteri
Herbert L. Mason
1937-7-28
14845
Tuolumne
ne side of Mary Lake (near Saurian Crest); Yosemite National Park, Mary Lake
2895
Comment
UC1191221
Erigeron coulteri
Herbert L. Mason
1939-8-3
12204
Placer
n of Lake Tahoe (Squaw Creek Valley); Squaw Creek Valley
1889
Comment
UC672232
Erigeron lonchophyllus
H. L. Mason
1923-8-21
751
Tuolumne
at junction of Lyell Fork and Dana Fork (Tuolumne River, n base of Puppy Dome); Sierra Nevada Mountains, Yosemite National Park, Puppy Dome
Comment
UC1192213
Erigeron pumilus var. intermedius
Herbert L. Mason
1948-7-18
13609
Siskiyou
Grass Lake
Comment
POM312495
Erigeron pumilus var. intermedius
H. L. Mason
1948-7-18
13609
Siskiyou
Grass Lake
Comment
UC1081542
Erigeron pygmaeus
Herbert L. Mason
1936-7-28
11414
Mono
Dana Plateau
3505
Comment
UC712512
Erigeron pygmaeus
Herbert L. Mason
1936-7-31
11467
Mono
e of Saddlebag Lake; Sierra Nevada, Tioga Crest
3474
Comment
POM311048
Eriodictyon capitatum
H. L. Mason
1947-5-2
13208
Santa Barbara
Pine canyon, Purissima Hills.
Comment
SEINET5499697
Eriodictyon capitatum
H. L. Mason
1947-1
Santa Barbara
Comment
CAS-BOT-BC248522
Eriogonum angulosum
H. L. Mason
1930-10-25
5787
Monterey
Foothills of the Santa Lucia Mountains between Jolon and Santa Lucia Ranger Station along the San Antonio River
Comment
UC635081
Eriogonum angulosum
Herbert L. Mason
1926-4-26
2996
Los Angeles
1 mi e Palmdale; Mohave Desert
Comment
CAS-BOT-BC248728
Eriogonum arborescens
Herbert L. Mason
1927-9-24
4095
Santa Barbara
Near West Willow Creek, Santa Cruz Island
Comment
SEINET3836444
Eriogonum arborescens
Herbert L. Mason
1927-9-23
4084
Santa Barbara
Prisoners Harbor, Santa Cruz Island
Comment
GH369968
Eriogonum argillosum
H. L. Mason
1930-3-30
Unknown
Canyon of the San Benito River, 14 miles south of Hollister
Comment
UC623311
Eriogonum compositum var. compositum
H. L. Mason
1939-5-18
12101
Napa
near St. Helena (near summit of Spring Mountain Grade); Spring Mountain Grade
Comment
UC635433
Eriogonum gracile
H. L. Mason
September, 1930
5910
Monterey
low hills at upper end of Elkhorn Slough between Watsonville and Castroville; Elkhorn Slough
Comment
UC1178903
Eriogonum incanum
Herbert L. Mason
1938-7-28
12032
Tuolumne
n Tiltill Mountain (Macomb Ridge); Sierra Nevada, Yosemite National Park, Macomb Ridge
3017
Comment
UC635000
Eriogonum inflatum var. inflatum
H. L. Mason
1928-3-10
4230
Riverside
Hidden Springs Canyon Coachella Mountains, Hidden Springs Canyon
Comment
UC634997
Eriogonum latifolium
Herbert L. Mason
1927-10-4
4125
Santa Cruz
mouth of Waddell Creek Ano Nuevo Pt., Waddell Creek
Comment
UC635012
Eriogonum latifolium
H. L. Mason
1932-8-27
7169
Mendocino
Point Arena
Comment
CAS-BOT-BC261387
Eriogonum nudum var. deductum
Herbert L. Mason
1938-7-28
12027
Tuolumne
Sierra Nevada, Yosemite National Park. Macomb Ridge, north of Tiltill Mountain
3017
Comment
UC635076
Eriogonum nudum var. deductum
Herbert L. Mason
1925-7-29
2181
Tuolumne
Mather
Comment
UC635014
Eriogonum nudum var. oblongifolium
H. L. Mason
1928-7-10
4885
Sonoma
Jenner
Comment
CAS-BOT-BC269822
Eriogonum nudum var. pubiflorum
H. L. Mason
1929-9-21
5433
Contra Costa
Along Marsh Creek Road three miles above Clayton
Comment
UC635005
Eriogonum nudum var. pubiflorum
H. L. Mason
1929-9-21
5433
Contra Costa
3 mi above Clayton (Marsh Creek road)
Comment
CAS-BOT-BC271967
Eriogonum nudum var. pubiflorum
H. L. Mason
1929-10-4
5450
Placer
Three miles south of Roseville on Folsom Road
Comment
UC641822
Eriogonum ovalifolium var. nivale
H. L. Mason
1936-7-31
11465
Mono
e Saddlebag Lake (Tioga Crest); Sierra Nevada, Tioga Crest
Comment
UC641993
Eriogonum ovalifolium var. nivale
H. L. Mason
1936-7-23
11285
Tuolumne
alpine slopes of Mount Conness Sierra Nevada, Mount Conness
Comment
UC635085
Eriogonum reniforme
Herbert L. Mason
1929-4-28
3101
San Bernardino
Box S Ranch Mohave Desert, Box S Ranch
Comment
POM257236
Eriogonum spergulinum
H. L. Mason
1928-7-4
4871
Tuolumne
Common on granite soil flats near streams; Tuolumne Meadows.
Comment
CAS-BOT-BC269960
Eriogonum spergulinum var. reddingianum
Herbert L. Mason
1924-6-20
1080
Plumas
Between Gold Lake & Bear Lake
Comment
UC634993
Eriogonum umbellatum var. nevadense
Herbert L. Mason
1924-6-18
1051
Plumas
Graeagle
Comment
UC1093643
Eriogonum vimineum
Herbert L. Mason
1947-7-10
13335
Modoc
2 air mi e Alturas (on mesa); Doris Reservoir
Comment
UC1106326
Eriophorum gracile
Herbert L. Mason, B. Fuller, and H. Whisler
1958-7-13
24
Nevada
1 mi. w. U.C. Trout Lab. (12 mi. n. of Truckee, Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
UC965495
Eriophorum gracile
Herbert L. Mason
1952-8-16
14481
Nevada
meadow opposite U.C. Trout Lab. (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
UC673595
Eriophyllum ambiguum var. ambiguum
Herbert L. Mason
1940-3-21
12229
Kern
between Hobo Hot Springs and Democrat Springs; Kern Canyon
Comment
UC566762
Eriophyllum confertiflorum var. confertiflorum
H. L. Mason
1926-4-26
2957
Los Angeles
4 mi w Saugus
Comment
UC566764
Eriophyllum confertiflorum var. confertiflorum
H. L. Mason
1923-6-15
392
Santa Barbara
Harris grade
Comment
GH427091
Eriophyllum jepsonii
H. L. Mason
1935-5-8
10008
Unknown
Patterson Road, twenty miles from mouth of Arroyo del Puerto, Mount Hamilton Range
533
Comment
UC507050
Eriophyllum lanatum var. achilleoides
L. R. and H. L. Mason
1933-4-30
E 16
Lake
between Middleton and Pope Valley (Serpentine Ridge, about 1 mi from Etna Springs); Serpentine Ridge
Comment
UC912251
Eriophyllum lanatum var. arachnoideum
Herbert L. Mason
1934-4-28
8096
Sonoma
Dohrman Creek
Comment
POM256520
Eriophyllum lanatum var. arachnoideum
H. L. Mason
1934-4-28
8096
Sonoma
Jansen Ranch, at head of Dohrman Creek, four miles west of Healdsburg
Comment
UC566755
Eriophyllum lanatum var. grandiflorum
H. L. Mason
1926-5-28
3275
Placer
5 mi above Auburn
Comment
UC1178871
Eriophyllum lanatum var. integrifolium
Herbert L. Mason
1938-7-26
12018
Tuolumne
s Jack Main Meadows; Yosemite National Park, Andrew Peak
2438
Comment
UC566746
Eriophyllum pringlei
H. L. Mason
1926-4-26
2997
Los Angeles
1 mi e Palmdale
Comment
UC566751
Eriophyllum wallacei
H. L. Mason
1926-4-26
3019
Los Angeles
Little Rock
Comment
UC571139
Erodium macrophyllum
H. L. Mason
1929-3-15
5060
Contra Costa
about 5 mi from Brentwood (Marsh Creek Road)
Comment
SFV16503
Erodium moschatum
S. Mason, H. M. Mason
1993-3-21
34
Los Angeles
San Fernando Valley Los Angeles, Sepulveda. Backyard of 9629 Langdon Ave.
267
Comment
UC1191957
Eryngium alismifolium
Herbert L. Mason
1947-8-12
13511
Modoc
Alturas, junction of N. and S. Forks of Pit River
Comment
UC1191958
Eryngium castrense
Herbert L. Mason and Verne Grant
1946-9-4
13101
Sutter
Colusa Gun Club
Comment
CAS-BOT-BC41526
Erysimum capitatum
H. L. Mason
1933-4-9
7189
Contra Costa
East of Antioch along the San Joaquin River.
12
Comment
CAS-BOT-BC54448
Erysimum capitatum
H. L. Mason
1932-3-19
6820
San Joaquin
Two miles east of Midway between Mountain House and Tracy.
Comment
UC1081568
Erysimum capitatum
Herbert L. Mason
1936-4-11
11060
Calaveras
s Sheep Ranch; San Antonio Creek
Comment
UCD114980
Erysimum capitatum
Steve Mason
1993-5-1
26
Los Angeles
on Sulfur Springs Road, 200 feet off Angeles Crest Highway on right roadcut.
1798
Comment
GH379526
Erysimum capitatum var. angustatum
H. L. Mason
1933-4-9
7189
Unknown
East of Antioch along the San Joaquin River
12
Comment
CAS-BOT-BC153813
Erythranthe filicaulis
C. T. Mason, Jr.
1954-6-7
1545
Tuolumne
East of Carnegie Institution Camp, Hog Ranch, Mather
1371
Comment
UC1077102
Erythranthe grayi
Herbert L. Mason
1938-7-16
11953
Madera
4 mi s Miami Ranger Station; Sierra Nevada
1219
Comment
UC635614
Eschscholzia caespitosa
H. L. Mason
1923-6-30
301
Tuolumne
roadside above Oakland Recreation Camp at South Fork
1066
Comment
CAS-BOT-BC402896
Eschscholzia caespitosa
H. L. Mason
1923-6-30
301
Tuolumne
Above the Oakland Recreation Camp at South Fork
1066
Comment
CAS-BOT-BC403199
Eschscholzia californica
H. L. Mason
1924-11-15
1157
Marin
In vacant lots at Willow Camp, Bolinas Bay
Comment
CAS-BOT-BC403545
Eschscholzia californica
H. L. Mason
1922-3-26
s.n.
San Mateo
Mouth of Gazos Creek
Comment
CAS-BOT-BC403546
Eschscholzia californica
H. L. Mason
1922-4-1
s.n.
San Mateo
At Pigeon Point Light
Comment
UC635605
Eschscholzia lobbii
H. L. Mason
1929-3-24
5099
Madera
18 mi e Madera (at junction of Yosemite Rd)
Comment
UC635609
Eschscholzia parishii
H. L. Mason
1928-3-10
4191
Riverside
Whitewater River
Comment
UC673635
Euchiton sphaericus
H. L. Mason
1930-8-1
5732
Lake
road to Bartlett Mountain
Comment
RSA114066
Eucrypta micrantha
H. L. Mason
1952-4-11
14253
San Bernardino
Black lavas north of Pisgah Crater.
Comment
CAS-BOT-BC202772
Euonymus occidentalis
H. L. Mason
1928-7-11
4890
Sonoma
Canyon 2 miles north of Fort Ross
Comment
CAS-BOT-BC202773
Euonymus occidentalis
H. L. Mason
1925-11-26
2497
Sonoma
Near Monte Rio
Comment
RSA116765
Euonymus occidentalis
H. L. Mason
1921-1
s.n.
San Mateo
San Francisquito Creek near Searsville Lake.
Comment
UC635616
Euonymus occidentalis var. occidentalis
H. L. Mason
1924-5-18
1016
San Mateo
Jasper Ridge near Stanford (creek below sand hill caves); Jasper Ridge
Comment Read comments Sep 19 2011
UC635624
Euonymus occidentalis var. occidentalis
H. L. Mason
1925-11-26
2497
Sonoma
stream bank near Monte Rio
Comment
UC570798
Euphorbia crenulata
H. L. Mason
1926-3-7
2701
Contra Costa
Mount Diablo
Comment
SD46096
Euphorbia eriantha
Herbert L. Mason
1952-4-9
14232
San Bernardino
10 miles south of Needles
Comment
CAS-BOT-BC95712
Euphorbia serpillifolia
Herbert Louis Mason; Verne Grant
1947-7-10
13325
Modoc
Dorris Reservoir.
Comment
UC570794
Euphorbia spathulata
H. L. Mason
1932-4-17
6942
Santa Clara
1 mi e New Almaden (hill)
Comment
UC571106
Fagonia laevis
H. L. Mason
1928-3-10
4247
Riverside
between Indio and Palm Springs
Comment
UC965503
Festuca rubra
Herbert L. Mason
1952-7-19
14419
Nevada
meadow opposite Univ. of Calif. Trout Laboratory; Sage Hen Creek
1981
Comment
UCD66424
Festuca saximontana var. purpusiana
H. L Mason
1936-7-24
11334
Tuolumne
White Mountain.
Comment
SEINET190344
Filago gallica
H. L. Mason
1932-4-28
7042
Monterey
Pajaro Hills
Comment
UC1100691
Fimbristylis vahlii
Herbert L. Mason and S. Galen Smith
1948-7-29
8246
Merced
e Los Banos (salt slough at end of Turner Island road)
Comment
UC1100692
Fimbristylis vahlii
Herbert L. Mason and S. Galen Smith
1948-7-29
8246
Merced
e Los Banos (salt slough at end of Turner Island road)
Comment
GH376201
Frankenia salina
H. L. Mason
1928-9-30
4967
Unknown
San Joaquin Delta near Holt
Comment
GH401236
Fraxinus latifolia
H. L. Mason
1928-5-3
4490 a
Unknown
Near Cosumnes River bridge at mouth of Clark Creek
Comment
UC566913
Fraxinus latifolia
H. L. Mason
1925-9-17
2225
Marin
Ross Valley to Lake Lagunitas
Comment
A422632
Fremontodendron californicum
H. L. Mason
1935-5-30
10009
Unknown
Four miles north of Knoxville Mines
Comment
GH422602
Fremontodendron californicum
H. L. Mason
1935-5-30
10009
Unknown
Four miles North of Knoxville Mines
Comment
UC635468
Fremontodendron californicum
H. L. Mason
1927-5-25
Santa Cruz
On way to China Grade Trail, Big Basin
Comment Read comments Nov 26 2017
SEINET5518602
Fremontodendron californicum subsp. napense
Herbert L. Mason
1935-1
10009
Napa
Four miles north of Knoxville Mines
Comment
CAS-BOT-BC130031
Fritillaria affinis
H. L. Mason
1917-4-28
s.n.
Marin
Mt. Tamalpais
Comment
UC672113
Fritillaria affinis
Herbert L. Mason
1925-3-1
1268
San Francisco
San Francisco, Bernal Heights Bernal Heights; San Francisco, Bernal Heights
Comment
UC1076048
Fritillaria pudica
Herbert L. Mason
1947-5-17
14778
Siskiyou
summit of Scott Mountain grade Scott Mountain
Comment
UC665686
Fritillaria purdyi
Herbert L. Mason
1941-3-16
12385
Lake
3 mi e of Middletown (Inner North Coast Range); Inner North Coast Range
Comment
UC672097
Fritillaria recurva
Herbert L. Mason
1926-3-21
2775
Lake
Middletown to Mount St. Helena via Toll House Canyon Toll House Canyon; Mount St. Helena, Toll House Canyon
Comment
UC1039517
Galium andrewsii subsp. andrewsii
Herbert L. Mason
1930-6-1
5678
Lake
St. Helena Creek Mt. St. Helena
Comment
UC632798
Galium porrigens
H. L. Mason
1936-4-11
11063
Calaveras
s Sheep Ranch; San Antonio Creek
Comment
SBBG27404
Galium trifidum
H. L. Mason
1936-7-12
11241
Mariposa
Peregoy Meadow, Glacier Point Rd
2255
Comment
UC1111587
Galium trifidum
Herbert L. Mason
1941-10-19
12530
Mendocino
Fort Bragg
Comment
UC1102976
Galium trifidum var. pusillum
Herbert L. Mason
1958-8-9
14879
Tuolumne
w Hetch Hetchy Dam; Sierra Nevada, Yosemite National Park< Swamp Lake area
1584
Comment
POM256483
Galium trifidum var. pusillum
H. L. Mason
1936-7-12
11241
Mariposa
Peregoy Meadow. Glacier Point road. Yosemite National Park.
2256
Comment
UC672200
Gamochaeta ustulata
H. L. Mason
1932-5-6
7069
Alameda
Oakland Hills
Comment
UC634765
Garrya elliptica
H. L. Mason
1926-1-9
2634
Alameda
head of San Leandro Canyon
Comment
UC634769
Garrya elliptica
H. L. Mason
1932-7-21
7105
Humboldt
Big Lagoon
Comment
UC634816
Garrya elliptica
H. L. Mason
1925-9-12
2223
Contra Costa
head of San Leandro Creek Canyon; Oakland Hills
Comment
UC634641
Garrya fremontii
H. L. Mason
1924-6-18
1053
Plumas
road between Graeagle and Gold Lake
Comment
UC634834
Garrya fremontii
H. L. Mason
1925-1-22
1201
Napa
Wooden Valley Grade
Comment
UC634787
Garrya veatchii
H. L. Mason
1927-6-14
3760
San Bernardino
San Antonio Canyon; San Gabriel Mountains
1219
Comment
UC1093945
Gaultheria humifusa
Herbert L. Mason
1941-7-14
12520
Madera
Yosemite National Park, Ottoway Lake Ottoway Lake; Sierra Nevada, Yosemite National Park, Ottoway Lake
2987
Comment
POM257252
Gayophytum humile
H. L. Mason
1934-5-5
8118
Lake
Southwest of Mt. Konocti
Comment
UC634693
Gayophytum humile
H. L. Mason
1934-5-5
8118
Lake
sw Mount Konocti
Comment
UC1056423
Gayophytum racemosum
Herbert L. Mason
1938-7-29
12051
Tuolumne
w Tower Peak; Yosemite National Park, Saurian Crest
3200
Comment
UC1111601
Gayophytum racemosum
Herbert L. Mason
1941-7-14
12525
Madera
Ottoway Lake Sierra Nevada, Yosemite National Park
3048
Comment
UC1191624
Gayophytum racemosum
Herbert L. Mason and Verne Grant
1947-7-9
13310 a
Modoc
Cedar Pass Warner Range (summit of Range)
1920
Comment
POM312608
Gayophytum racemosum
H. L. Mason
1948-7-17
13603
Siskiyou
Eastern Grass Lake.
Comment
UC566948
Gentiana newberryi
H. L. Mason
1923-8-6
716
Tuolumne
Lyell Fork Sierra Nevada Mountains, Yosemite National Park
Comment
UC566923
Gentiana sceptrum
H. L. Mason
Aug 1930
5737
Mendocino
Fort Bragg
Comment
UC1083129
Geranium dissectum
Herbert L. Mason
1936-4-10
11050
Calaveras
on road from Murphy to Angel Camp
Comment
UC571131
Geranium molle
H. L. Mason
1927-4-26
5212
Marin
road from Fairfax to crest of Bolinas (via Alpine Dam)
Comment
UC908811
Gilia achilleifolia subsp. multicaulis
Herbert L. Mason
1928-5-6
4561
Alameda
Cedar Mountain Mount Hamilton Range, Cedar Mountain
Comment
UC909024
Gilia angelensis
Herbert L. Mason
1926-4-26
2942
Los Angeles
upper road Pacoima Wash foothills San Gabriel Mountains, Pacoima Wash (foothills of San Gabriel Mountains)
Comment
UC908804
Gilia brecciarum subsp. neglecta
Herbert L. Mason
1935-4-30
8343
Kern
Walker Pass
Comment
UC908829
Gilia brecciarum subsp. neglecta
Herbert L. Mason
1935-3-29
8206
Kern
two mi n Mohave; Mohave Desert, n of Mohave
Comment
UC908400
Gilia capitata subsp. abrotanifolia
Herbert L. Mason
1935-5-1
8365
Tulare
Kern River n Kernville (Sequoia National Forest); , Kern River n of Kernville
Comment
UC908401
Gilia capitata subsp. abrotanifolia
Herbert L. Mason
1926-4-26
2952
Los Angeles
4 mi w Saugus; w of Saugus
Comment
UC907855
Gilia capitata subsp. abrotanifolia
Herbert L. Mason
1949-4-25
14012
Ventura
Ojai-Maricopa Road one mi below Wheeler Hot Springs; below Wheeler Hot Springs
Comment
RSA23088
Gilia capitata subsp. chamissonis
H. L. Mason, Annetta Carter
1938-5-18
11840
Marin
Point Reyes Peninsula, 12.5 miles from Inverness.
Comment
UC908158
Gilia capitata subsp. pedemontana
Herbert L. Mason
1926-5-24
3281
Nevada
5 mi s Grass Valley (Rattlesnake Creek); , s of Grass Valley
609
Comment
UC908210
Gilia capitata subsp. pedemontana
Charles Mason
1949-5-10
1288 a
Mariposa
along road 1 mi s Mormon Bar (between Mariposa and Raymond); s of Mormon Bar, btw Mariposa and Raymond
Comment
UC908354
Gilia clivorum
Herbert L. Mason
1935-3-30
8248
San Luis Obispo
Cholame Valley
Comment
UC909016
Gilia clivorum
H. L. Mason
1928-4-25
4375
San Francisco
Hunter's Point , Hunter's Point (San Francisco)
Comment
UC909028
Gilia clivorum
Herbert L. Mason
1932-4-28
7040
Monterey
e Watsonville (Pajaro Hills); e of Watsonville, Pajaro Hills
Comment
CAS-BOT-BC226221
Gilia interior
Herbert L. Mason
1949-4-23
14007
Kern
Two miles east of Hobo Hot Springs, Kern River Canyon
Comment
CAS-BOT-BC226222
Gilia interior
Herbert L. Mason
1935-5-2
8385
Kern
Piute, Kern River Canyon drainage
Comment
UC908426
Gilia interior
Herbert L. Mason
1938-4-17
11732
Kern
three and one-half mi e Hobo Hot Springs (Kern River Canyon); , e of Hobo Hot Springs
Comment
UC909034
Gilia interior
Herbert L. Mason
1935-4-30
8278
Kern
six mi e Onyx (Kern River drainage); , e of Onyx
Comment
HSC16974
Gilia latiflora
H. L. Mason
1935-3-29
8204
Kern
2 mi. W of Randsburg, Mojave Desert
Comment
SD45383
Gilia latiflora
Herbert L. Mason
1935-3-29
8204
Kern
2.0 miles west of Randsburg, Mojave Desert.
Comment
CAS-BOT-BC226339
Gilia latiflora subsp. davyi
Herbert L. Mason
1932-4-1
6869
Los Angeles
One mile east of Lancaster, Mohave [Mojave] Desert
Comment
CAS-BOT-BC226338
Gilia latiflora subsp. davyi
Herbert L. Mason
1934-3-30
8037
Los Angeles
Antelope Valley, Mohave [Mojave] Desert
Comment
CAS-BOT-BC225411
Gilia latiflora subsp. latiflora
Herbert L. Mason
1926-4-27
3068
San Bernardino
Two miles south of Victorville, Mohave Desert
Comment
CAS-BOT-BC226394
Gilia latiflora subsp. latiflora
Herbert L. Mason
1926-4-26
2998
Los Angeles
Little Rock Creek, Mohave [Mojave] Desert
Comment
UC908490
Gilia latiflora subsp. latiflora
Herbert L. Mason
1934-3-30
8031
San Bernardino
two mi se Barstow; Mohave Desert, Barstow
Comment
UC908820
Gilia latiflora subsp. latiflora
Herbert L. Mason
1926-4-26
2970
Los Angeles
four mi s Vincent (Soledad Pass (Mint Cayon Highway)); Soledad Pass, s of Vincent
Comment
UC908839
Gilia latiflora subsp. latiflora
Herbert L. Mason
1926-4-26
3004
Los Angeles
Little Rock Creek Mohave Desert, Little Rock Creek
Comment
CAS-BOT-BC225410
Gilia latiflora subsp. latiflora
Herbert L. Mason
1926-4-28
3109
San Bernardino
Cajon Pass
Comment
SEINET12271308
Gilia latifolia
H. L. Mason
1935-1
8204
Kern
2 mi W of Randsburg, Mojave Desert
Comment
UC908819
Gilia leptantha subsp. transversa
Herbert L. Mason
1926-4-27
3047
Los Angeles
between Rock Creek and Little Rock Creek ((Big Pines Recreation Park Road), Los Angeles Co. Park Road, Mohave Desert); Mohave Desert, btw Rock Creek and Little Rock Creek
Comment
UC908888
Gilia leptantha subsp. transversa
Herbert L. Mason
1926-4-28
3109
San Bernardino
Cajon Pass
Comment
UC908432
Gilia malior
Herbert L. Mason
1935-3-28
8201
San Bernardino
two mi n Kramer Junction (Mohave Desert); , n of Kramer Junction
Comment
UC908973
Gilia millefoliata
Herbert L. Mason
1946-5-18
12775
Mendocino
sand dunes 6 mi n Fort Bragg (in edge of small lake); n of Fort Bragg
Comment
UC908219
Gilia minor
Herbert L. Mason
1935-4-1
6885
Kern
five mi s Muroc (Mohave Desert); , s of Muroc
Comment
UC908221
Gilia minor
Herbert L. Mason
1935-3-28
8189
San Bernardino
s Barstow (Taylor Springs, Mohave Desert); Mohave Desert, s of Barstow, Taylor Springs
Comment
UC908481
Gilia minor
Herbert L. Mason
1935-3-28
8180
San Bernardino
three mi s Barstow (Mohave Desert); , s of Barstow
Comment
UC908220
Gilia minor
Herbert L. Mason
1935-3-28
8200
San Bernardino
one mi n Kramer Junction (Mohave Desert); , n of Kramer Junction
Comment
UC908808
Gilia modocensis
Herbert L. Mason
1946-6-8
12853
Santa Barbara
summit of road San Rafael Mountains, Big Pine Mountain (Big Pine Mountain, San Rafael Mountains)
Comment
CAS-BOT-BC407618
Gilia ochroleuca subsp. exilis
Herbert L. Mason
1926-4-30
3111
Riverside
Temescal Canyon
Comment
CAS-BOT-BC407619
Gilia ochroleuca subsp. exilis
Herbert L. Mason
1926-4-30
3112
Riverside
Temecula Canyon, 1 mile S of Temecula
Comment
UC908023
Gilia ochroleuca subsp. exilis
Herbert L. Mason
1926-4-30
3112
Riverside
1 mi s Temecula; Temecula Canyon, s of Temecula
Comment
CAS-BOT-BC407839
Gilia ochroleuca subsp. ochroleuca
Herbert L. Mason
1935-3-28
8192
San Bernardino
Mohave Desert, Taylor Spring, N of Lucerne Valley
Comment
CAS-BOT-BC407838
Gilia ochroleuca subsp. ochroleuca
Herbert L. Mason
1935-3-29
8215
San Bernardino
Mohave Desert, 3 miles N of Johannesburg on road to Searles Lake
Comment
UCD15431
Gilia scopulorum
S. Mason,; H. Mason, and C. Katzfey
1995-4-23
54
Los Angeles
California, Los Angeles Co.; in the northern foothills of Transverse Range/Mojave Desert foothills near Little Rock; along Mt. Emma Road, 0.8 miles above Ft. Tejon Rd.; along the right side of the road in a road cut;
914
Comment
UC908825
Gilia sinuata
Herbert L. Mason
1935-3-28
8198
San Bernardino
twelve mi w Barstow; Mohave Desert, w of Barstow
Comment
UC908892
Gilia sinuata
Herbert L. Mason
1935-5-1
8356
Tulare
n Kernville (Kern River, Sequoia National Forest); Sequoia National Forest, Kern River
Comment
UC1051478
Gilia stellata
Herbert L. Mason
1952-4-11
14257
San Bernardino
Black lavas n Pisgah Crater; Black lavas n of Pisgah Crater
Comment
UC1051480
Gilia subacaulis
Herbert L. Mason
1952-4-11
14256
San Bernardino
Black lavas n Pisgah Crater; n of Pisgah Crater
Comment
UC908418
Gilia subacaulis
Herbert L. Mason
1935-4-30
8287
San Bernardino
sw Searles Lake (Poison Canyon); Mohave Desert, Poison Canyon sw of Searles Lake
Comment
UC908623
Gilia tricolor subsp. diffusa
Herbert L. Mason
1934-3-28
8006
Kern
Kern River Canyon
Comment
UC908560
Gilia tricolor subsp. tricolor
Herbert L. Mason
1935-3-27
8172
Fresno
along road to Firebaugh w Fresno; w of Fresno along road to Firebaugh
Comment
UC908597
Gilia tricolor subsp. tricolor
Herbert L. Mason
1925-3-23
1310
Alameda
Sunol
Comment
UC963782
Gilia tricolor subsp. tricolor
Herbert L. Mason
1929-3-23
5097
Madera
hills e Madera; e of Madera
Comment
UC908613
Gilia tricolor subsp. tricolor
Herbert L. Mason
1926-3-14
2731
Napa
Mount St. Helena
Comment
UC635647
Githopsis diffusa subsp. robusta
H. L. Mason
1928-5-6
4572
Alameda
Cedar Mountain Mount Hamilton Range
Comment
SEINET10464598
Githopsis specularioides
Mason
1932-4-24
Mason 6984
Amador
3 miles south of Ione
Comment
UC1191699
Glaux maritima
Herbert L. Mason
1946-6-9
12875
San Luis Obispo
between Oceano and mouth of Santa Maria River (Dune Lakes); Dune Lakes
Comment
SD47954
Glossopetalon spinescens var. aridum
Herbert L. Mason
1940-3-22
12237
Inyo
Death Valley National Monument, Grapevine Mts, Titus Canyon
Comment
UCD66751
Glyceria borealis
H. L. Mason
1938-7-9
11899
Tuolumne
Yosemite Natl. Park. Swamp Lake, northwest of Hetch - Hetchy.
Comment
CAS-BOT-BC307345
Gnaphalium palustre
Herbert L. Mason
1952-7-19
14430
Nevada
Meadow opposite University of California Trout Laboratory, Sage Hen Creek, Sierra Nevada
1981
Comment
SEINET8770731
Gnaphalium palustre
H. L. Mason
1952-1
14451
Sierra
1.5 miles east of Calpine at junction of Calpine with Sierraville-Beckwourth road. Sierra Valley
1524
Comment
UC1192120
Gnaphalium palustre
Herbert L. Mason and Verne Grant
1947-7-12
13425
Modoc
s of Alturas (along rr tracks); Pit River Valley
Comment
UC581124
Gnaphalium palustre
H. L. Mason
1933-5-29
7245
El Dorado
Shingle Springs
Comment
CAS-BOT-BC302582
Gnaphalium palustre
H. L. Mason
1934-5-5
8125
Lake
Near Hildebrand Ranch, southeast of Kelseyville
Comment
UCD132417
Gnaphalium palustre
Herbert L. Mason; Verne Grant
1947-7-12
13425
Modoc
near south end of west side road, along railroad tracks, Pit River Valley, south of Alturas.
Comment
UC775195
Goodyera oblongifolia
Herbert L. Mason
1940-10-13
Mendocino
2 mi n of Fort Bragg (Little Valley); Little Valley
Comment
JEPS21897
Gratiola ebracteata
Herbert L. Mason
1945-6-29
12621
Lake
Boggs Lake at base Mount Hanna; base of Mount Hanna, Boggs Lake
Comment
JEPS23181
Gratiola ebracteata
Herbert L. Mason
1940-7-7
12330
Tuolumne
w Hetch Hetchy Dam (Miguel Meadow, Yosemite National Park); Yosemite National Park, w of Hetch Hetchy Dam, Miguel Meadow
1584
Comment
UC672548
Gratiola ebracteata
H. L. Mason
1929-4-7
5197
Calaveras
three mi above Valley Spring; above Valley Spring
Comment
CAS-BOT-BC26127
Gratiola heterosepala
H. L. Mason; Rimo Bacigalupi
1953-6-8
14544
Lake
in Boggs Lake, at southeastern shore
883
Comment
CAS-BOT-BC229890
Gratiola neglecta
Herbert Louis Mason; Verne Grant
1947-7-12
13393
Modoc
Jones' Lane, off Hwy 395, several miles S of Alturas.
Comment
UC1191879
Gratiola neglecta
Herbert L. Mason and Verne Grant
1947-7-12
13393
Modoc
off highway 395 several mi s Alturas (irrigation ditch by Jones' Lane)
Comment
UC1051437
Gratiola neglecta
Herbert L. Mason
1955-8-14
14656
Modoc
n Rim Rock Reservoir (Drift Fence Reservoir); , n of Rim Rock Reservoir
Comment
UC1076317
Grayia spinosa
Herbert L. Mason
1926-4-26
2992
Los Angeles
1 mi. e. Palmdale
Comment
CAS-BOT-BC304560
Grindelia hirsutula
H. L. Mason
1921-7-3
s.n.
San Mateo
Pescadero - La Honda Road
Comment
UC1093968
Grindelia hirsutula
Herbert L. Mason
1930-6-1
5653
Sonoma
mouth of Gualala River Gualala River
Comment
JEPS54063
Guillenia flavescens
H. L. Mason
1930-3-30
San Benito
20 mi. s. Hollister (2 mi. n. of Willow Creek School, 1/4 mi. n.e. of rd. along San Benito R., across a meadow and across the river bed)
Comment
UC1083163
Guillenia lasiophylla
H. L. Mason
1926-4-10
2806
Alameda
Cedar Mountain via Arroyo Mocho Canyon Mount Hamilton Range
Comment
UC1076516
Gutierrezia californica
H. L. Mason
1929-9-21
5435
Contra Costa
3 mi above Clayton (Marsh Creek road)
Comment
UC1093941
Hackelia micrantha
Herbert L. Mason
1941-7-7
12512
Madera
just s of the Givens Lake Trail junction; Sierra Nevada, Yosemite National Park
2865
Comment
SEINET10605896
Hainardia cylindrica
Mason
1935-6-15
Mason 9041
Monterey
Mound Meadow, Point Lobos State Park.
Comment
UC1111602
Harmonia hallii
Herbert L. Mason
1940-5-10
12285
Lake
3 mi e Middletown
Comment
CAS-BOT-BC510393
Hastingsia alba
Herbert L. Mason
1950-7-15
14051
Trinity
Summit of grade, Scott Mountain
Comment
UC912312
Hazardia squarrosa var. grindelioides
Herbert L. Mason
1929-10-12
5494
San Luis Obispo
8.4 mi from Atascadero
Comment
UC565501
Hedypnois rhagadioloides
H. L. Mason
1928-4-13
4333
Sonoma
hills between Santa Rosa and Calistoga (Reili School)
Comment Read comments Mar 30 2009
UC566768
Helenium bolanderi
H. L. Mason
1930-6-1
5625
Mendocino
Fort Bragg
Comment
CAS-BOT-BC211489
Helianthemum scoparium
H. L. Mason
1926-4-30
3118
San Diego
Pala Grade to Palomar Mountain
Comment
RSA0012972
Helianthus nuttallii subsp. nuttallii
H. L. Mason
1947-8-11
13492
Lassen
Hwy 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County
Comment
UC1076489
Herniaria hirsuta subsp. hirsuta
Herbert L. Mason
1923-7-21
636
Tuolumne
Hetch Hetchy , Hetch Hetchy (Yosemite National Park)
Comment
UCD98167
Herniaria hirsuta var. cinerea
Herbert L. Mason
1932-3-19
6825
San Joaquin
2 miles east of Midway, between Mountain House and Tracy.
Comment
CAS-BOT-BC310168
Hesperevax caulescens
H. L. Mason
1939-4-16
12081
San Joaquin
About 9 miles southeast of Stockton at junction of Austin Road and Little John Creek
Comment
SBBG26795
Hesperevax caulescens
H. L. Mason
1939-4-16
12081
San Joaquin
ca. 9 mi SE of Stockton at jct of Austin Rd and Little John Crk
Comment
UC581116
Hesperevax sparsiflora var. sparsiflora
H. L. Mason
1934-4-28
8082
Sonoma
Jensen's Ranch; Dohrmann Creek
Comment
UC672276
Hesperevax sparsiflora var. sparsiflora
H. L. Mason
1932-4-17
6941
Santa Clara
1 mi e of New Almaden
Comment
UC672278
Hesperevax sparsiflora var. sparsiflora
H. L. Mason
1933-4-30
7226
Lake
near Aetna Springs
Comment
UC672280
Hesperevax sparsiflora var. sparsiflora
H. L. Mason
1928-4-28
4411
Marin
Tiburon Peninsula
Comment
UC672281
Hesperevax sparsiflora var. sparsiflora
H. L. Mason
1928-4-25
4374
San Francisco
Hunter's Point
Comment
UC581114
Hesperevax sparsiflora var. sparsiflora
H. L. Mason
1934-4-28
8098
Sonoma
Highway between Santa Rosa and Healdsburg
Comment
UC1178019
Hesperocallis undulata
Herbert L. Mason
1952-4-10
14245
San Bernardino
20 mi sw of Baker (Cronise Valley, on Highway 91-466); Cronise Valley
Comment
UC980826
Hesperochiron pumilus
Herbert L. Mason and Robert Sweeney
1953-4-17
14515
Lake
due w. Lakeport (Four Mile Glade, Cow Mt.); Cow Mt., Four Mile Glade
914
Comment
UC1212443
Hesperolinon californicum
Herbert L. Mason
1946-5-30
12795
Lake
near Middletown; Inner North Coast Ranges, Locomono Creek
Comment
CAS-BOT-BC176040
Hesperolinon clevelandii
H. L. Mason
1934-5-5
8112
Lake
East side of Mount Konocti
Comment
UC571119
Hesperolinon congestum
H. L. Mason
1928-4-28
4409
Marin
Tiburon Peninsula
Comment
SD51683
Hesperolinon disjunctum
Herbert L. Mason
1952-6-19
14304
Glenn
Black Diamond Ridge, Mendocino National Forest.
822
Comment
UC1212509
Hesperolinon disjunctum
Herbert L. Mason
1952-6-19
14306
Glenn
Black Diamond Ridge Inner North Coast Ranges
Comment
CAS-BOT-BC179175
Hesperolinon micranthum
Herbert L. Mason
1946-7-13
13448
Modoc
W end of Fandango Pass, near Goose Lake.
Comment
UC1056970
Hesperolinon micranthum
Herbert L. Mason
1936-5-15
11124
Mariposa
summit of road between Coulterville and Bagby
Comment
RSA151710
Hesperolinon micranthum
H. L. Mason
1952-6-15
14297
Lake
Butts Creek road southeast of Middletown.
Comment
POM312837
Heteranthera dubia
H. L. Mason, Verne Grant
1946-8-14
13041
Butte
Butte Sink
Comment
UC1100978
Heteranthera dubia
Herbert L. Mason and Verne Grant
1946-8-14
13041
Butte
Butte Sink
Comment
UC635690
Heterocodon rariflorum
H. L. Mason
1932-4-24
6974
San Joaquin
11 mi s Clements
Comment
UC635691
Heterocodon rariflorum
H. L. Mason
1923-7-12
578
Tuolumne
Mather; Sierra Nevada Mountains, Yosemite National Park
Comment
UC555293
Heteromeles arbutifolia
H. L. Mason
1926-1-1
2581
Mendocino
Upper Lake to Elk Mt.
Comment
UC672168
Heterotheca grandiflora
Herbert L. Mason
1927-10-4
4122
Santa Cruz
Ano Nueva Pt. Mouth of Waddell Creek, Ano Nueva Pt.
Comment
UC912305
Heterotheca grandiflora
Herbert L. Mason
1926-4-25
2901
Orange
5 mi s Laguna
Comment
UC1093930
Heterotheca oregona var. oregona
Herbert L. Mason
Nov 26 1925-Nov 27 1925
2493
Sonoma
Monte Rio, along Russian River Russian River
Comment
UC1076520
Heterotheca sessiliflora subsp. echioides
Herbert L. Mason
1927-7-31
3999
Santa Cruz
hills s Mount Herman
Comment
GH363379
Heuchera pilosissima
H. L. Mason
1928-4-8
4286
Unknown
Coast 2 miles N. of Ft. Ross
Comment
UC1192277
Hibiscus lasiocarpos
Herbert L. Mason
1945-7-11
12649
Colusa
3 mi above Colusa (plains near Butte Creek, Butte Lodge Outing Club)
Comment
UC1179073
Hieracium triste
Herbert L. Mason
1936-7-30
14819
Tuolumne
Tilden Lake; Yosemite National Park
2895
Comment
UC565524
Hieracium triste
H. L. Mason
1923-8-3
707
Tuolumne
w of Unicorn Creek; Yosemite National Park, Tuolumne Meadows
Comment
CAS-BOT-BC312980
Hieracium triste
Herbert L. Mason
1936-7-30
14819
Tuolumne
Sierra Nevada, Yosemite National Park. Tilden Lake
2895
Comment
UC1191992
Hippuris vulgaris
Herbert L. Mason
1948-9-5
13670
Mono
junction of Hwys. 108 & 395
Comment
UC632813
Hippuris vulgaris
H. L. Mason
1938-8-26
12077
San Joaquin
s.w. Holt (Trapper Slough, Roberts Isl.); Roberts Isl., Trapper Slough
Comment
CAS-BOT-BC412705
Hollisteria lanata
Herbert Mason
1940-5-4
12266
Merced
Ortigalita Canyon, 2 miles north east of Ortigalita Peak
304
Comment
UC912326
Holocarpha virgata subsp. virgata
Herbert L. Mason
1929-9-21
5431
Contra Costa
3 mi above Clayton (summit of grade, Marsh Creek Road)
Comment
UC912268
Holocarpha virgata subsp. virgata
Herbert L. Mason
1929-10-4
5449
Placer
3 mi s of Roseville; Folsom Road
Comment
CHSC2153
Hordeum jubatum
P. Mason
1937-5-23
Glenn
On canal bank at Ord Bend.
39
Comment
POM313215
Hordeum jubatum
H. L. Mason
1947-8-9
13478
Modoc
East side of Fairchild Swamp, north of Alturas
Comment
UC1152953
Hordeum jubatum
Herbert L. Mason
1963-6-24
15217
Mono
Paoha Island Mono Lake
Comment
UC673309
Horkelia bolanderi
Herbert L. Mason
1934-5-5
8127
Lake
between Kelseyville Lower Lake (Foot of obsidian covered hill just above a meadow)
Comment
UC555626
Horkelia daucifolia
H. L. Mason
1931-5-9
5870
Siskiyou
3 mi s Weed
Comment
UC555283
Horkelia marinensis
H. L. Mason
1929-9-1
5406
Mendocino
3 mi n Fort Bragg
Comment
CAS-BOT-BC144069
Horkelia parryi
H. L. Mason
1932-4-24
6978
Amador
Three miles south of Ione
Comment
GH345641
Horkelia parryi
H. L. Mason
1932-4-24
6978
Unknown
Three miles south of Ione
Comment
UC555628
Horkelia parryi
H. L. Mason
1932-4-24
6978
Amador
3 mi s Ione
Comment
UC565576
Hulsea heterochroma
H. L. Mason
1923-7-21
635
Tuolumne
Hetch Hetchy; Yosemite National Park
Comment
UC581126
Hulsea heterochroma
H. L. Mason
8152
Monterey
Headwaters of Arroyo Seco; Santa Lucia Mountains
Comment
UC1101445
Hydrocotyle ranunculoides
Herbert L. Mason and Verne Grant
1946-7-24
12917
Marin
first lake s. Bear Valley (2.8 mi. n. of Lake Ranch)
Comment
UC965569
Hydrophyllum capitatum var. alpinum
Herbert L. Mason
1952-7-11
14338
Nevada
1 mi w Univ. of Calif. Trout Laboratory (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
CAS-BOT-BC410235
Hypericum concinnum
H. L. Mason
1930-6-1
5676
Lake
St. Helena Creek, slopes of Mount St. Helena
Comment
JEPS812
Ipomopsis aggregata
Herbert L. Mason
1924-6-15
1035
Plumas
Blairsden Feather River (near the junction of Graeagle creek and the Feather River)
Comment
UC571179
Iris douglasiana
H. L. Mason
1928-4-8
4282
Sonoma
Fort Ross
Comment
UC571175
Iris macrosiphon
H. L. Mason
1926-3-6
2685
Marin
near Lake Lagunitas
Comment
UC571182
Iris macrosiphon
H. L. Mason
1930-6-1
5675
Lake
St. Helena Creek Mount St. Helena (slopes of Mount St. Helena)
Comment
UC571184
Iris macrosiphon
H. L. Mason
1926-5-29
3280
Nevada
5 mi s Grass Valley; Rattlesnake Creek
609
Comment
JEPS19119
Isocoma menziesii var. sedoides
Herbert L. Mason
1927-9-24
4086
Santa Barbara
West ranch Buena Vista Creek; Santa Cruz Island
Comment
UC907509
Isoetes howellii
Herbert L. Mason
June 1950
Sacramento
just above n end of Antioch Bridge (San Joaquin River)
Comment
CAS-BOT-BC112401
Isolepis carinata
Herbert L. Mason
1946-5-19
12783
Mendocino
Cleone Lake, north of Fort Bragg
Comment
CAS-BOT-BC112628
Isolepis cernua
H. L. Mason
1921-6-2
s.n.
San Mateo
Pebble Beach, near Pescadero.
Comment
UC1100789
Isolepis cernua
Herbert L. Mason
1946-5-19
12780
Mendocino
n Ft. Bragg (Cleone Lake); , n of Ft. Bragg
Comment
UC634683
Isomeris arborea
H. L. Mason
1926-4-28
3081
San Bernardino
Box S Ranch Spring
Comment
UCD133357
Iva axillaris
Herbert L. Mason
1947-7-10
13344
Modoc
Dorris Reservoir, 2 miles east of Alturas.
Comment
CAS-BOT-BC140232
Ivesia santolinoides
Herbert L. Mason
1938-7-28
12039
Tuolumne
Macomb Ridge east of Tilden Lake; Sierra Nevada, Yosemite National Park
3048
Comment
UC673316
Ivesia santolinoides
Herbert L. Mason
1933-9-2
7264
Amador
Silver Lake; Sierra Nevada
Comment
UC1081565
Ivesia unguiculata
Herbert L. Mason
1936-7-12
11242
Mariposa
Peregoy Meadow; Sierra Nevada, Yosemite National Park, Glacier Point
2255
Comment
SEINET12323656
Jacaranda mimosifolia
E. Mason, Mason, R. E.
1944-1
s.n.
Los Angeles
near Los Angeles
Comment
UC1179033
Juncus acuminatus
Herbert L. Mason
1929-8-24
5395
Mendocino
Pudding Slough Creek Fort Bragg
Comment
UC1100953
Juncus balticus
Herbert L. Mason
1948-7-18
13615
Siskiyou
Grass Lake
Comment
UC1100959
Juncus balticus
Herbert L. Mason and Verne Grant
1947-6-26
13248
Solano
Cordelia Slough Suisun Marsh
Comment
UC1100975
Juncus balticus
Herbert L. Mason and Verne Grant
1947-7-9
13318
Modoc
Cedar Pass, summit of Warner Range Warner Range
1920
Comment
UC1101043
Juncus bufonius var. congestus
Herbert L. Mason
1949-7-7
14030
San Mateo
Mouth of Gazos Creek
Comment
UC1179055
Juncus chlorocephalus
Herbert L. Mason
1938-7-26
12015
Tuolumne
Andrews Peak Sierra Nevada, Yosemite National Park
2590
Comment
UC1179036
Juncus effusus subsp. pacificus
Herbert L. Mason
1932-7-24
7114
Marin
Inverness Ridge
Comment
UC1101029
Juncus hesperius
Herbert L. Mason and Verne Grant
1946-8-28
13088
San Mateo
s of San Francisco (on Santa Cruz-Daly City Road #5)
Comment
SEINET6186011
Juncus howellii
H. L. Mason
1952-7-16
14349
Nevada
Sierra Nevada, Sage Hen Creek, adjacent to stream which arises from large spring in meadow one mile west of University of California Trout Laboratory
1981
Comment
UC1101010
Juncus lescurii
Herbert L. Mason
1946-6-9
12874
San Luis Obispo
between Oceano and mouth of Santa Maria River; Dune Lakes
Comment
UC1056961
Juncus macrandrus
Herbert L. Mason
1936-7-9
11896
Tuolumne
w of Hetch Hetchy; Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment Read comments Jul 13 2007
UC1056962
Juncus macrandrus
Herbert L. Mason
1938-7-9
11891
Tuolumne
w of Hetch Hetchy; Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1100956
Juncus mexicanus
Herbert L. Mason and Verne Grant
1947-7-12
13426
Modoc
n of Likely (s loop of w side road)
Comment
UC965655
Juncus mexicanus
Herbert L. Mason
1952-7-19
14436
Nevada
opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC1100996
Juncus nevadensis
Herbert L. Mason and Verne Grant
1947-7-10
13357
Modoc
0.25 mi w Dorris Reservoir (2 mi e of Alturas)
Comment
POM312896
Juncus phaeocephalus var. paniculatus
H. L. Mason, Verne Grant
1946-7-5
12911
Solano
In Lake Chabot water reservoir just north of Vallejo.
Comment
YM-YOSE66522
Juniperus occidentalis
H. L. Mason
1938-7-7
11876
Tuolumne
SWAMP LAKE RESEARCH RESERVE. RIDGE EAST OF SWAMP LAKE
Comment
A362728
Kalmia microphylla
H. L. Mason
1938-7-6
11852
Unknown
Sierra Nevada, Swamp Lake, Yosemite National Park
Comment
GH365654
Keckiella antirrhinoides
H. L. Mason
1926-4-30
3142
Unknown
Pala Grade
Comment
UC1178984
Keckiella lemmonii
Herbert L. Mason
1945-6-28
12603
Lake
se of Borax Lake; Obsidian Ridge
Comment
UC1039508
Kelloggia galioides
Herbert L. Mason
1923-7-17
600
Tuolumne
Mather
1432
Comment
UC1039511
Kelloggia galioides
H. L. Mason
1926-5-31
3356
Calaveras
1.2 mi sw Calaveras Big Trees (on old road)
Comment
UC775178
Kelloggia galioides
Herbert L. Mason
Jul 1941
12523
Madera
Ottoway Lake; Yosemite National Park
Comment
UC1191873
Kickxia spuria
Herbert L. Mason and S. Galen Smith
1948-8-19
8365
Merced
about 2 mi ne Merced (on Snelling highway)
Comment
GH360099
Koeleria cristata
H. L. Mason
1932-4-28
7051
Unknown
Laundry farm, Oakland Hills
Comment
UC1076311
Kopsiopsis strobilacea
Herbert L. Mason
1927-6-15
3773
San Bernardino
Mt. San Antonio, San Gabriel Mts.
Comment
SEINET7881865
Lactuca pulchella
Herbert L. Mason
1940-1
12316
Tuolumne
Miguel Meadows; Yosemite National Park
1585
Comment
CAS-BOT-BC349852
Lactuca tatarica subsp. pulchella
Herbert L. Mason
1940-7-6
12316
Tuolumne
Yosemite National Park. Miguel Meadows
1584
Comment
CAS-BOT-BC349853
Lactuca tatarica subsp. pulchella
Herbert L. Mason
1940-7-6
12316
Tuolumne
Yosemite National Park. Miguel Meadows
1584
Comment
UC964729
Lactuca tatarica subsp. pulchella
Herbert L. Mason
1940-7-6
12316
Tuolumne
Miguel Meadows
1584
Comment
UC912318
Laennecia coulteri
Herbert L. Mason
1929-9-21
5443
Contra Costa
one mile e of junction of Bordon Highway and road to Antioch; Antioch, Borden Highway
Comment
UC1051477
Langloisia setosissima subsp. punctata
Herbert L. Mason
1952-4-11
14258
San Bernardino
black lavas n. Pisgah Crater
Comment
UC909089
Langloisia setosissima subsp. setosissima
Herbert L. Mason
1928-3-10
4204
Riverside
Hidden Springs Canyon Coachella Mts., Hidden Springs Canyon
Comment
UC571110
Larrea tridentata
Herbert L. Mason
1926-4-26
3007
Los Angeles
Little Rock Creek; Mojave Desert
Comment
CAS-BOT-BC412762
Lastarriaea coriacea
H. L. Mason
1923-6-23
545
Monterey
Carmel River, ten miles above Carmel
Comment
CAS-BOT-BC337968
Lasthenia californica
H. L. Mason
1921-5-14
s.n.
Alameda
Haywards [Hayward]
Comment
UC769987
Lasthenia fremontii
Herbert L. Mason
1934-3-25
7970
Sacramento
Keithly Ranch Sacramento Valley, Rio Linda
Comment
UC1076391
Lathyrus lanszwertii var. lanszwertii
Herbert L. Mason
1925-7-4
2142
Tuolumne
Mather Sierra Nevada
1432
Comment
UC673610
Lathyrus littoralis
Herbert L. Mason
1926-4-18
2863
San Francisco
San Francisco
Comment
UC912574
Layia chrysanthemoides
Herbert L. Mason
1929-3-31
5151
Contra Costa
Sacramento River at Antioch; Sacramento River
Comment
CAS-BOT-BC321071
Layia gaillardioides
H. L. Mason
1921-7-14
s.n.
San Mateo
La Honda-Pescadero Road, near Pescadero Creek
Comment
CAS-BOT-BC321072
Layia gaillardioides
H. L. Mason
1921-7-14
s.n.
San Mateo
La Honda-Pescadero Road, near Pescadero Creek
Comment
UC912563
Layia glandulosa
Herbert L. Mason
1926-4-26
3000
Los Angeles
Little Rock
Comment
UC912595
Layia glandulosa
Herbert L. Mason
1926-4-27
3042
Los Angeles
Little Rock Creek
Comment
UC912610
Layia glandulosa
Herbert L. Mason
1932-4-2
6900
Kern
3 mi w Muroc; Mojave Desert
Comment
UC912576
Layia pentachaeta subsp. pentachaeta
Herbert L. Mason
1929-4-7
5183
Stanislaus
about 10 mi above Oakdale; Sierra foothills
Comment
UC912277
Layia septentrionalis
Herbert L. Mason
1929-4-29
5235
Lake
2.9 mi w Lakeport
Comment Read comments Jan 3 2018
POM224203
Lembertia congdonii
H. L. Mason
1935-4-30
9315
Kern
5 miles W of Bakersfield
Comment
UC1101275
Lemna minuscula
Herbert L. Mason, S. Galen Smith
1948-8-11
8326
Merced
5 mi w of Merced (Black Rascal Creek); Black Rascal Creek
Comment
UC1106909
Lemna minuscula
Herbert L. Mason
1937-6-17
11545
Alameda
Thornhill pool, on road to Moraga, Oakland Oakland; , Thornhill pool
Comment
CAS-BOT-BC527312
Lemna trisulca
Herbert L. Mason
1955-7-30
14638
Plumas
Near Chester
Comment
UC1101260
Lemna trisulca
Herbert L. Mason
1955-7-30
14638
Plumas
near Chester
Comment
UC632850
Lepechinia calycina
H. L. Mason
1936-5-15
Mariposa
Seven miles above Coulterville
Comment
UC1076211
Lepidium fremontii
H. L. Mason
1930-4-20
5592
Los Angeles
Rock Creek Region Mohave Desert
Comment
UC673528
Lepidium fremontii
H. L. Mason
1926-4-27
3056
Los Angeles
30 mi w Victorville; Mohave Desert
Comment
UC673532
Lepidium latipes var. latipes
H. L. Mason
1932-4-17
6955
Santa Clara
plains s.w. Gilroy (Miller & Lux Ranch); Miller & Lux Ranch
Comment
UC1076212
Lepidium perfoliatum
H. L. Mason
1932-4-1
6861
Los Angeles
1 mi. e. Lancaster (Mohave Desert); Mohave Desert
Comment
UC1100304
Leptochloa fascicularis
Herbert L. Mason and Verne Grant
1946-8-14
13038
Butte
Sacramento Outing Club Butte Sink (canal near big pond)
Comment
CAS-BOT-BC273950
Leptochloa fusca subsp. fascicularis
Herbert L. Mason
1945-9-19
12730
Butte
Gray Lodge Game Refuge, northwest of Pennington
Comment
CAS-BOT-BC273955
Leptochloa fusca subsp. fascicularis
Herbert L. Mason
1945-9-19
12730
Butte
Gray Lodge Game Refuge, northwest of Pennington
Comment
UC908540
Leptodactylon californicum
Herbert L. Mason
1935-5-25
8318
San Luis Obispo
Cuyama River n Santa Maria; Cuyama River
Comment
GH385305
Leptodactylon californicum subsp. tomentosum
H. L. Mason
1941-3-28
12402
Unknown
north end of Nipomo mesa
76
Comment
SEINET4854777
Leptodactylon californicum subsp. tomentosum
Herbert L. Mason
1941-3-28
12402
San Luis Obispo
North end of Nipomo Mesa.
76
Comment
UC1186146
Leptodactylon pungens
Herbert L. Mason
1938-7-25
11999
Tuolumne
Deep Lake at e base Mahan Peak (Yosemite National Park); , Deep lake e base Mahan Peak
Comment
UC909074
Leptodactylon pungens
Herbert L. Mason
Jul 18 1941-Jul 31 1941
12518
Madera
ridge w Moraine Meadows (Ottoway Lake); Yosemite National Park, , w of Moraine Meadows
Comment
CAS-BOT-BC226553
Leptosiphon acicularis
Herbert L. Mason
1933-4-30
7218
Lake
Middletown
Comment
CAS-BOT-BC226589
Leptosiphon ambiguus
Herbert L. Mason
1926-4-11
2825
Alameda
Rancho Repose, Mount Hamilton Range, Cedar Mountain
Comment
POM310911
Leptosiphon aureus
H. L. Mason
1935-4-30
8348
Kern
West side of Walker Pass near Summit.
Comment
CHSC40737
Leptosiphon grandiflorus
H. L. Mason
1940-5-5
12275
Merced
Los Banos Creek.
Comment
POM310915
Leptosiphon grandiflorus
H. L. Mason
1940-5-5
12275
Madera
Los Banos Creek
Comment
CAS-BOT-BC226704
Leptosiphon jepsonii
Herbert L. Mason
1928-4-13
4339
Sonoma
Reibli School
Comment
RSA114063
Leptosiphon liniflorus
H. L. Mason
1952-4-14
14265
Contra Costa
3.5 miles S of Byron
Comment
POM264403
Leptosiphon montanus
H. L. Mason
1935-4-30
6262
Kern
Below Hobo Hot Springs, lower Kern River Canyon
Comment
GH385242
Leptosiphon pygmaeus
H. L. Mason
1935-5-4
8300
Unknown
southwest facing slopes of Mount Hamilton, Mount Hamilton Range
Comment
SFV16204
Leptosyne calliopsidea
S. Mason, J. Artero
1995-4-1
50
San Luis Obispo
Carrizo Plain Carrizo Plain Natural Area. Off Simler Road, 0.7 miles from Soda Lake Road. Saline, alkaline area near Soda Lake.
610
Comment
UC912538
Lessingia leptoclada
H. L. Mason
1925-7-29
2183
Tuolumne
Hog Ranch Mather
Comment
JEPS19709
Lessingia pectinata var. tenuipes
Herbert L. Mason
1930-10-25
5780
Monterey
between Jolon and Santa Lucia Ranger Station (along the San Antonio River); foothills of the Santa Lucia Mountains, along the San Antoni
Comment
UC1093965
Lessingia pectinata var. tenuipes
Herbert L. Mason
1930-10-25
5780
Monterey
between Jolon and Santa Lucia Ranger Station; foothills of the Santa Lucia Mts., San Antonio River
Comment
UC912255
Lessingia ramulosa
Herbert L. Mason
1928-7-20
4912
Lake
s Kelseyville
Comment
UC642674
Lewisia glandulosa
H. L. Mason
1936-7-23
11283
Tuolumne
alpine slopes of Mount Conness Sierra Nevada, Mount Conness
Comment
UC1093947
Lewisia kelloggii subsp. kelloggii
Herbert L. Mason
1941-7-6
12495
Mariposa
Horse Ridge Yosemite National Park
2895
Comment
CAS-BOT-BC444533
Lewisia triphylla
Herbert L. Mason
1936-8-6
11512
Mariposa
Sierra Nevada, Yosemite National Park. Peregoy Meadow, Glacier Point road
2255
Comment
UC1099788
Lewisia triphylla
Herbert L. Mason
Jul 7 1939-Jul 8 1939
12154
Nevada
3 mi w Donner Summit
2072
Comment
UC1100166
Lilaea scilloides
Herbert L. Mason
1925-6-25
2109
Tuolumne
Mather
Comment
CAS-BOT-BC451673
Lilaea scilloides
H. L. Mason
1922-3-28
s.n.
San Mateo
Pigeon Pt.
Comment
UC1100169
Lilaea scilloides
Herbert L. Mason
1948-6-10
13575
Mendocino
3 mi s Gualala (Highway 1)
Comment
UC1111016
Lilaeopsis masonii
Herbert L. Mason
October, 1942
12556
Contra Costa
Antioch, Lower San Joaquin R.
Comment
UC566870
Lilaeopsis occidentalis
H. L. Mason
1929-8-24
5402
Mendocino
Fort Bragg, Pudding Creek Slough
Comment
UC673407
Lilium maritimum
Herbert L. Mason
Aug 1930
5739
Mendocino
Fort Bragg
Comment
CAS-BOT-BC130792
Lilium pardalinum
H. L. Mason
1920-6-25
s.n.
San Mateo
Pescadero Creek
Comment
UC673374
Lilium pardalinum
H. L. Mason
1922-7-19
314
Tuolumne
Mather Sierra Nevada Mountains, Yosemite National Park (Lodge Meadow)
1432
Comment
UC673399
Lilium parvum
Herbert L. Mason
1925-6-29
2135
Tuolumne
Lake Eleanor; Sierra Nevada, Yosemite National Park
1432
Comment
UC673376
Lilium parvum
H. L. Mason
1922-7-24
321
Tulare
Middlefork Bridge Sierra Nevada Mountains, Yosemite National Park (Tioga Road)
1737
Comment Read comments Feb 25 2011
UC1077087
Limnanthes alba
Herbert L. Mason
1938-7-11
11940
Tuolumne
w Hetch Hetchy (margin of lake at gravel pit); Yosemite National Park, Miguel Meadow
1584
Comment
SEINET8727023
Limnanthes alba
Charles T. Mason Jr.
1949-1
1294
Placer
4.3 miles S. W. of Placerville along U. S. Highway 50.
Comment
UC971801
Limnanthes alba subsp. alba
Charles T. Mason Jr.
1948-5-13
1184
Sacramento
6 mi e Sacramento (ditch on s side of State Hwy 16)
30
Comment
UC971834
Limnanthes alba subsp. alba
Charles T. Mason Jr.
1949-4-23
1252
Butte
7 mi s Oroville (in ditch along e side of State Hwy 24)
Comment
UC1178824
Limnanthes alba subsp. versicolor
Herbert L. Mason
1939-7-13
12135
Tuolumne
woods around Miguel Meadows (w of Hetch Hetchy); Sierra Nevada, Yosemite National Park
1584
Comment
UC635636
Limnanthes alba subsp. versicolor
H. L. Mason
1924-5-29
1025
Tuolumne
Hog Ranch Sierra Nevada Mountains, Yosemite National Park, Mather (in stream bed)
Comment
SEINET6670265
Limnanthes alba var. alba
C. T. Mason
1949-4-23
1252
Butte
7 miles south of Oroville, along the east side of State Highway 24
Comment
SEINET6670327
Limnanthes alba var. versicolor
C. T. Mason
1949-5-9
1293
El Dorado
3.3 miles south of Eldorado, along State Highway 49
Comment
HSC2203
Limnanthes douglasii
H. L. Mason, Annatta Carter
1938-5-18
1413
Marin
Point Reyes Peninsula, 12 mi. from Inverness
Comment
UC971872
Limnanthes douglasii
Charles T. Mason Jr.
1948-4-24
1140
San Joaquin
about 10 mi ne Stockton (ditch on nw side of Hwy 88)
Comment
SEINET8727025
Limnanthes douglasii
Charles T. Mason Jr.
1948-1
1160
San Joaquin
Along state Highway 4 about 1/8 mile west of cross-road to Milton and Knights Ferry, Elevation 200 feet.
61
Comment
UC635632
Limnanthes douglasii subsp. douglasii
H. L. Mason
1928-4-13
4310
Marin
marshy meadow n San Rafael (near sloughs)
Comment
UC971874
Limnanthes douglasii subsp. douglasii
Charles T. Mason Jr.
1948-5-8
1182
Napa
Pope Valley
Comment
UC971838
Limnanthes douglasii subsp. nivea
Herbert L. Mason
1941-4-5
Lake
Borax Lake
Comment
UC971843
Limnanthes douglasii subsp. nivea
Charles T. Mason Jr.
1948-5-8
1177
Mendocino
about 8 mi n Ukiah (along US Hwy 101)
457
Comment
UC971800
Limnanthes douglasii subsp. nivea
Charles T. Mason Jr.
1948-3-5
1115
Santa Clara
reservoir Hall's Valley (overflow creek at s end)
487
Comment
UC971816
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1948-3-14
1132
Amador
along state hwy 88 between Ione and Clements
106
Comment
UC971818
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1948-3-27
1134
Contra Costa
0.1 mi s Byron Hot Springs road (along Byron-Bethany road)
Comment
UC971822
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1948-4-25
1160
Stanislaus
along State Hwy 4 about 1/8 mi w cross road to Milton and Knights Ferry
60
Comment
RSA435687
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1949-3-31
1248
Merced
Along the road from Merced to Snelling, 6 miles from U.S. Highway 99.
Comment
UC971828
Limnanthes douglasii subsp. sulphurea
Herbert L. Mason
1941-5-23
Marin
Point Reyes Peninsula
Comment
UC971797
Limnanthes floccosa subsp. californica
Charles T. Mason Jr.
1949-4-24
1256
Butte
9 mi nw Oroville (on n side of Oroville-Chico road)
Comment
UC971878
Limnanthes floccosa subsp. californica
Charles T. Mason Jr.
1949-4-24
1255
Butte
8 mi nw Oroville (along the Oroville-Chico road, near a large asphalt area marked Bombing Range)
Comment
UC971891
Limnanthes montana
Charles T. Mason Jr.
1948-5-2
1173
Fresno
Big Sandy Valley Black Mountain (e side of mt., 4.2 mi from junction of Hwy 168 and road to Aubrey)
579
Comment
UC971895
Limnanthes montana
Charles T. Mason Jr.
1949-5-9
1290
Madera
0.3 mi s Mariposa-Madera county line (n of Raymond)
Comment
SEINET6670657
Limnanthes montana
C. T. Mason
1949-5-9
1287
Mariposa
2 miles south of Mormon Bar, road from Mormon Bar to Raymond
Comment
UC971867
Limnanthes striata
Charles T. Mason Jr.
1949-5-9
1292
Tuolumne
1.3 mi w Chinese Camp (ditch on s side of State Hwy 120)
Comment Read comments Oct 25 2009
UC971907
Limnanthes striata
Charles T. Mason Jr.
1949-5-9
1285
Tuolumne
2 mi se Keystone (Keystone-La Grange rd, along a stream)
Comment
UC971863
Limnanthes striata
Charles T. Mason Jr.
1949-5-9
1296
Placer
4 mi ne Shingle Springs (on U.S. Hwy 50 at railroad crossing)
Comment
UC1101422
Limosella acaulis
Herbert L. Mason
1947-8-12
13504
Modoc
Junction of North and South Forks of Pit River Alturas (Alturas); Junction of North and South Forks of Pit River
Comment
UC1101428
Limosella acaulis
Herbert L. Mason
1952-5-18
14293
Merced
Santa Fe Grade e Los Banos
Comment
UC965644
Limosella aquatica
Herbert L. Mason
1952-7-19
14452 a
Sierra
at junction of Calpine with Sierraville-Beckwourth road 1.5 mi e Calpine (Sierra Valley); Sierra Nevada, Sierra Valley
1524
Comment
UC965646
Limosella aquatica
Herbert L. Mason
1952-7-17
14387
Sierra
at junction of Calpine with Sierraville-Beckwourth road 1.5 mi e Calpine (Sierra Valley); Sierra Nevada, Sierra Valley
1524
Comment
UC908556
Linanthus ambiguus
Herbert L. Mason
1928-5-6
4567
Alameda
Cedar Mountain Mount Hamilton Range
Comment
UC908561
Linanthus ambiguus
Herbert L. Mason
1932-4-17
6950
Santa Clara
road to Sweedal, headwaters of Uvas Creek Uvas Creek
Comment
UC908951
Linanthus androsaceus
Herbert L. Mason
1933-4-21
7194
Santa Clara
road above Smith Creek (on slopes of Isabel Creek); Mount Hamilton Range, Isabel Creek
Comment
UC908655
Linanthus arenicola
Herbert L. Mason
1938-4-15
11726
San Bernardino
sw of Trona; Poison Canyon
Comment
SEINET8729329
Linanthus aureus
Herbert L. Mason
1935-1
8348
Kern
West side of Walker Pass near summit.
Comment
UC908646
Linanthus aureus subsp. aureus
Herbert L. Mason
1926-4-26
2945
Los Angeles
Pacoima Wash, foothills of San Gabriel Mountains San Gabriel Mountains
Comment
UC907833
Linanthus bicolor
Herbert L. Mason
1934-3-28
8005
Kern
31 mi w Onyx (lower Kern River Canyon); Kern River Canyon
Comment
UC907842
Linanthus bicolor
Herbert L. Mason
1943-4-16
12569
Sonoma
about 10 mi above Sonoma
Comment
UC907851
Linanthus bicolor
Herbert L. Mason
1934-3-28
8007
Kern
25 mi w Onyx (lower Kern River Canyon); Kern River Canyon
Comment
UC908668
Linanthus bicolor
Herbert L. Mason
1928-5-3
4461
Amador
w of Ione (Jackson Creek Bridge)
Comment
UC908558
Linanthus bicolor
Herbert L. Mason
1943-4-15
12562
Santa Clara
w side Pacheco Pass (border of Santa Clara and Merced Counties)
Comment
UC964796
Linanthus bolanderi
Herbert L. Mason
1938-5-1
11748
Lake
about 4 mi from Lucerne; Bartlett Mountain
1158
Comment
SEINET8729333
Linanthus bolanderi
Herbert L. Mason
1938-1
11748
Lake
Bartlett Mountain, about 4 miles from Lucerne.
Comment
UC907827
Linanthus ciliatus
Herbert L. Mason
1941-7-7
12497
Madera
Buck Camp
Comment
UC908356
Linanthus ciliatus
H. L. Mason
1935-5-9
Stanislaus
Arroyo del Puerto Mount Hamilton Range, Red Mountains
Comment
UC963788
Linanthus ciliatus
Herbert L. Mason
1927-6-11
3747
Los Angeles
Mount Wilson San Gabriel Mountains
1524
Comment
UC908282
Linanthus ciliatus
Herbert L. Mason
1924-6-20
1082
Plumas
between Gold Lake and Bear Lake (Graeagle Camp)
Comment
SD45375
Linanthus concinnus
Herbert L. Mason
1934-3-30
8035
Los Angeles
Rock creek; south of Valyermo, north side of San Gabriel Mountains.
Comment
UC963792
Linanthus dianthiflorus
Herbert L. Mason
1928-3-11
4256
Riverside
San Gorgonio Pass
Comment
SEINET196202
Linanthus dichotomus
Herbert L. Mason
1926-4-11
2826
Alameda
Cedar Mountain, Mount Hamilton Range.
Comment
POM310952
Linanthus dichotomus subsp. meridianus
H. L. Mason
1942-5-24
12540
Napa
Eight miles south of Pope Valley Store
Comment
SEINET8729335
Linanthus dichotomus subsp. meridianus
Herbert L. Mason
1942-1
12540
Napa
Eight miles south of Pope Valley Store
Comment
UC907873
Linanthus filipes
Herbert L. Mason
1929-3-24
5104
Madera
18 mi e Madera (at junction of Yosemite Road, between Bates Station and O'Neals)
Comment
GH385227
Linanthus grandiflorus
H. L. Mason
1940-5-5
12275
Unknown
Los Banos Creek
Comment
JEPS58436
Linanthus harknessii
Herbert L. Mason
1924-6-20
1084
Plumas
between Gold Lake Bear Lake
Comment
UC908664
Linanthus jepsonii
Herbert L. Mason
1940-5-21
12293
Sonoma
Head of Maycama Creek Knights Valley
Comment
UC908037
Linanthus jonesii
Herbert L. Mason
1935-3-29
8230
San Bernardino
w of Searles Lakes; Mohave Desert, Poison Canyon
Comment
UC1060674
Linanthus liniflorus
Herbert L. Mason
1957-5-11
14699
San Benito
2-3 mi e Hernandez
Comment Read comments Apr 14 2020
UC907996
Linanthus liniflorus
Herbert L. Mason
1935-5-1
8366
Tulare
n of Kernville; Sequoia National Forest, Kern River
Comment
UC665602
Linanthus montanus
Herbert L. Mason
1935-4-30
6262
Kern
below Hobo Hot Springs (lower Kern River Canyon); Sierra Nevada, Kern River Canyon
Comment
UC963779
Linanthus montanus
Herbert L. Mason
1928-5-3
4483
Amador
s of Cosumnes River (opposite Clark Creek)
Comment
UC907957
Linanthus parryae
Herbert L. Mason
1935-4-30
6271
Kern
Onyx
Comment
UC907864
Linanthus parviflorus
Herbert L. Mason
1938-5-8
11793
Santa Barbara
road to Figueroa Mountain
Comment
UC907984
Linanthus parviflorus
Herbert L. Mason
1926-6-6
3380
Santa Cruz
just below Woodwardia Falls; Big Basin
Comment
UC1191147
Linanthus parviflorus
Herbert L. Mason
1928-5-3
4482
Amador
s of Cosumnes River (opposite Clark Creek)
Comment
UC1178837
Linanthus pygmaeus
Herbert L. Mason
1940-5-3
12261
Merced
2 mi ne Ortigalita Peak; South Coast Ranges, Ortigalita Canyon
304
Comment
UCD123916
Lindernia dubia
Herbert L. Mason; S. Galen Smith
1948-8-18
8351
Kings
canal just west of Stratford.
Comment
UC632771
Lipocarpha micrantha
H. L. Mason
1938-7-10
11905
Tuolumne
w of Hetch Hetchy (Yosemite National Park, Miguel Meadow); Yosemite National Park Yosemite National Park Yosemite Natio
1584
Comment
CAS-BOT-BC111996
Lipocarpha occidentalis
H. L. Mason
1938-7-10
11904
Tuolumne
Miguel Meadow, west of Hetch-Hetchy. Yosemite National Park.
1584
Comment
UC632775
Lipocarpha occidentalis
H. L. Mason
1936-7-12
11216
Mariposa
along Merced River, Yosemite National Park, Yosemite Valley Merced River; Yosemite National Park, Yosemite Valley, Merced River
Comment
UC635726
Lipocarpha occidentalis
Herbert L. Mason
1937-7-21
11557
Tuolumne
Yosemite National Park, Miguel Meadows Miguel Meadows; Yosemite National Park, Miguel Meadows
1645
Comment
SEINET7585735
Lipocarpha occidentalis
H. L. Mason
1938-7-10
11904
Tuolumne
Yosemite National Park, Miguel Meadow, west of Hetch-Hetchy.
1585
Comment
UC673589
Listera convallarioides
H. L. Mason
July, 1930
5709
Calaveras
near Hermit Springs; Blue Creek, tributary of North Fork of Mokelumne River
Comment
UC673590
Listera convallarioides
H. L. Mason
1925-7-30
2190
Tuolumne
ne Mather (along Smith Peak Trail)
Comment
UC1076088
Lithocarpus densiflorus
Herbert L. Mason
1928-7-14
4899
Humboldt
East Fork of Eel River East Fork of Eel River, Gaberville; Gaberville
Comment
UC570877
Lithophragma
Herbert L. Mason
1926-5-29
3294
Nevada
3 mi w Cisco; Crystal Lake
1767
Comment
UC1076022
Lithophragma campanulatum
Herbert L. Mason
1947-5-17
14757
Siskiyou
on Scott Mountain Road five mi s Callahan; s of Callahan
Comment
JEPS19296
Lithophragma campanulatum
Herbert L. Mason
1947-5-17
14757
Siskiyou
along the Scott Mountain Road about 5 mi s Callahan
1463
Comment
UC570868
Lithophragma heterophyllum
Herbert L. Mason
1927-4-23
3684
San Mateo
along road between La Honda and Pescadero Creek; road between La Honda and Pescadero Creek
Comment
UC909081
Loeseliastrum matthewsii
Herbert L. Mason
1926-4-27
3058
Los Angeles
30 mi. w. Victorville; Mojave Desert
Comment
UC909130
Loeseliastrum matthewsii
Herbert L. Mason
1935-4-30
8295
Kern
near Inyokern; Owens Valley
Comment
UC909131
Loeseliastrum matthewsii
Herbert L. Mason
1926-4-27
3071
San Bernardino
n. Victorville
Comment
UC909135
Loeseliastrum matthewsii
Herbert L. Mason
1926-4-28
3089
San Bernardino
s.e. Lucerne Valley P.O. (Box S Ranch); Box S Ranch
Comment
UC709734
Loeseliastrum schottii
Herbert L. Mason
1926-4-28
3099
San Bernardino
Mohave Desert, Box S Ranch
Comment
UC581143
Logfia depressa
H. L. Mason
1935-3-29
8213
Kern
Red Rock Canyon Mojave Desert, Red Rock Canyon
Comment
UC581174
Logfia depressa
H. L. Mason
1935-3-29
8235
San Bernardino
six mi s Trona (w side of lake); Mohave Desert, Searles Lake
Comment
SEINET190349
Logfia filaginoides
H. L. Mason
1932-1
7055
Alameda
Oakland Hills; Laundry Farm
Comment
UC581118
Logfia filaginoides
H. L. Mason
1935-3-31
8256
Fresno
ne of Fresno (Kett)
Comment
UC673619
Logfia filaginoides
H. L. Mason
1932-5-4
7055
Alameda
Laundry Farm Oakland Hills, Laundry Farm
Comment
UC673621
Logfia filaginoides
Herbert L. Mason
1933-4-22
7215
Monterey
Pajaro Hills
Comment
UC1093862
Logfia gallica
Herbert L. Mason
1947-5-4
13210
Sonoma
near Kenwood; Hood Mountain
Comment
UC672274
Logfia gallica
H. L. Mason
1933-4-22
7216
Monterey
Pajaro Hills
Comment
UC1178993
Lomatium hooveri
Herbert L. Mason
1947-3-30
13164 a
Colusa
0.5 mi E of Lake Co. line on Williams-Lower Lake Highway western Colusa Co.
Comment
UC775191
Lomatium macrocarpum
Herbert L. Mason
1940-5-4
12270 a
Merced
n.w. Ortigalita Peak (Piedra Azul Creek); Inner South Coast Ranges, Piedra Azul Creek
304
Comment
UC566806
Lomatium nudicaule
Herbert L. Mason
1927-5-11
3726
Butte
vicinity of Dobbins
457
Comment
JEPS17023
Lomatium parvifolium
Herbert L. Mason
1927-7-30
3992
Monterey
Carmel
Comment
UC566819
Lomatium parvifolium
H. L. Mason
1928-4-20
Monterey
Carmel, Pine Woods
Comment
UC1077107
Lomatium torreyi
Herbert L. Mason
1938-7-22
11962
Tuolumne
n. Hetch Hetchy (Vernon Lake Trail, Yosemite Nat'l Park); Sierra Nevada, Yosemite Nat'l Park, Vernon Lake Trail
2072
Comment
UC753539
Lomatium utriculatum
Herbert L. Mason
1946-6-7
12832
Santa Barbara
0.5 mi. above Cameusa Creek rd. to Oso Gate (San Rafael Range); San Rafael Range
731
Comment
UC566815
Lomatium utriculatum
H. L. Mason
1926-4-26
2980
Los Angeles
summit Mint Canyon
Comment
UC912445
Lonicera conjugialis
Herbert L. Mason
1932-9-9
7183
Alpine
head Silver Creek; Ebbett's Pass
Comment
UC1076400
Lonicera interrupta
Herbert L. Mason
1925-7-29
2184
Tuolumne
Hog Ranch Mather
Comment
CAS-BOT-BC198557
Lotus
Herbert L. Mason
1927-5-10
3711
Butte
Cherokee Mine, Table Mt. northeast of Oroville
Comment
UC555427
Lotus benthamii
H. L. Mason
Nov 1931
5881
Monterey
road between Monterey and Carmel
Comment
SEINET3696754
Lotus denticulatus
Herbert L. Mason
1945-5-31
Contra Costa
Cashion Canyon, NW of St. Mary's College
Comment
UC1179052
Lotus grandiflorus
Herbert L. Mason
1937-5-27
11554
Lake
s side Mt. Konocti
Comment
UC1178840
Lotus humistratus
Herbert L. Mason
1940-5-3
12253
Merced
2 mi ne Ortigalita Peak; South Coast Ranges, Ortigalita Canyon
304
Comment
UC1191609
Lotus humistratus
Herbert L. Mason and Verne Grant
1947-7-10
13332
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
UC1093974
Lotus junceus
Herbert L. Mason
1938-5-7
11769
Santa Barbara
Burton Mesa
Comment
UC1199848
Lotus oblongifolius var. oblongifolius
Herbert L. Mason
1937-7-22
11599
Tuolumne
s of Miguel Meadows (just w of Hetch Hetchy Dam); Sierra Nevada, Yosemite National Park, Swamp Lakes
1584
Comment
UC912244
Lotus oblongifolius var. oblongifolius
Herbert L. Mason
1930-9-1
5906
Monterey
between Watsonville and Castroville (at upper end of Elkhorn Slough); Elkhorn Slough
Comment
UC555413
Lotus strigosus
H. L. Mason
1926-4-30
3115
Riverside
1 mi s Temecula; Temecula Canyon
Comment
UC1101421
Ludwigia palustris
Herbert L. Mason
1945-6-29
12627
Lake
Boggs Lake at base Mt. Hanna; , Boggs Lake
Comment
POM312607
Ludwigia palustris var. pacifica
H. L. Mason
1946-7-4
12886
Sonoma
Pitkin Marsh, between Santa Rosa and Forestville.
Comment
UC1191767
Ludwigia peploides subsp. peploides
Herbert L. Mason and Verne Grant
1946-8-14
13019
Butte
canal near big pond on Sacramento Outing Club; Butte Sink, Sacramento Outing Club
Comment
UC1083200
Lupinus bicolor
Herbert L. Mason
1938-4-17
11736
Mariposa
ridge w Mormon Bar; Sierra Nevada foothills, w of Mormon Bar
548
Comment
UC775180
Lupinus concinnus
Herbert L. Mason
1941-3-27
12396
Santa Barbara
top Burton Mesa (e of Lompoc, above Pine Canyon); above Pine Canyon, top of Burton Mesa, e of Lompoc
Comment
SEINET3823000
Lupinus concinnus var. agardhianus
Herbert L. Mason
1941-3-27
12396
Santa Barbara
Top of Burton Mesa, above Pine Canyon, E of Lompoc
Comment
UC1081562
Lupinus lepidus var. sellulus
Herbert L. Mason
1936-7-10
11185
Tuolumne
se White Wolf (Lukens Lake); Sierra Nevada, Yosemite National Park, Lukens Lake
2560
Comment
UC1076236
Lupinus microcarpus var. horizontalis
H. L. Mason
1930-4-20
5561
Kern
Caliente Creek; Tehachapi Mts., Caliente Creek
Comment
UC1076233
Lupinus nanus
H. L. Mason
1926-5-28
3261
El Dorado
Rose Springs
Comment
RSA104354
Lupinus peirsonii
H. L. Mason
1926-4-27
3026
Los Angeles
Rock Creek Canyon, lower Pinyon Pine belt
1296
Comment
UC499444
Lupinus peirsonii
Herbert L. Mason
1926-4-27
3026
Los Angeles
Rock Creek San Gabriel Mts.; Rock Creek, San Gabriel Mts.
Comment
UC1039994
Lupinus polyphyllus var. burkei
Herbert L. Mason
1936-7-7
11150
Mariposa
Research Reserve Hetch Hetchy Trail w Dark Hole; Sierra Nevada, Yosemite National Park, Hetch Hetchy Trail
2438
Comment
UC1101063
Luzula comosa var. laxa
Herbert L. Mason and Lawrence W. Reinecke
1937-7-22
11608
Tuolumne
Yosemite National Park. Swamp Lakes, just west of Hetch Hetchy Dam and south of Miguel Meadow
1584
Comment
UC632757
Luzula comosa var. laxa
H. L. Mason
1938-7-9
11894
Tuolumne
Yosemite National Park. Swamp Lake, west of Hetch Hetchy
1584
Comment
POM312920
Luzula spicata
H. L. Mason
1936-7-27
11390
Tuolumne
Gaylor Lakes, Yosemite National Park.
3049
Comment
UC1083104
Lycium andersonii
Herbert L. Mason
1932-4-2
6893
Kern
3 mi w Muroc; Mojave Desert
Comment
UC1083110
Lycium andersonii
Herbert L. Mason
1926-4-28
3084
San Bernardino
Box S Spring Mojave Desert
Comment
UC1111565
Lycopus uniflorus
Herbert L. Mason
1938-8-1
12062
Tuolumne
Yosemite National Park, in Tiltill Valley, Rancheria Mountain Trail Tiltill Valley; Sierra Nevada, Yosemite National Park, Tiltill Valley
1828
Comment
CAS-BOT-BC215682
Lycopus uniflorus
Herbert L. Mason
1938-8-1
12062
Tuolumne
Tiltill Valley, Rancheria Mountian Trail, Yosemite National Park, Sierra Nevada
1828
Comment
JEPS45598
Lyonothamnus floribundus subsp. aspleniifolius
Herbert L. Mason
1927-9-25
4109
Santa Barbara
hills about Pelican Bay (in canyons); Santa Cruz Island
Comment
UC555520
Lyonothamnus floribundus subsp. aspleniifolius
Herbert L. Mason
1937-9-25
4109
Santa Barbara
hills about Pelican Bay; Santa Cruz Island
Comment
UC1191566
Lythrum californicum
Herbert L. Mason, Verne Grant
1947-6-26
13263
Solano
Suisun Marsh, Coredelia Slough Suisun Marsh; , Coredelia Slough
Comment
UCD102993
Lythrum californicum
Herbert L. Mason; Verne Grant
1946-8-7
12977
Colusa
Butte Sink. 8 miles N of Colusa.
Comment
UC912591
Madia elegans
H. L. Mason
1925-6-24
2104
Tuolumne
Mather Sierra Nevada Mountains, Yosemite National Park
Comment
UCD134271
Madia glomerata
Herbert L. Mason
1947-8-9
13483
Modoc
on east side of Fairchild Swamp, north of Alturas.
Comment
UC1191225
Malacothrix clevelandii
Herbert L. Mason
1935-5-1
8372
Tulare
n Kernville; Kern River, Sequoia National Forest
Comment
UC565543
Malacothrix clevelandii
Herbert L. Mason
1926-5-1
3171
San Diego
Palomar Mt.
Comment
UC565538
Malacothrix floccifera
Herbert L. Mason
1927-7-31
4001
Santa Cruz
Mt. Herman
Comment
UC565547
Malacothrix glabrata
H. L. Mason
1926-4-26
3006
Los Angeles
Little Rock Creek Mohave Desert
Comment
UC775185
Malacothrix incana
Herbert L. Mason
1941-7-3
San Luis Obispo
n mouth of the Santa Maria River; Inner South Coast Ranges, Oso Flaco Lake
Comment
UC565526
Malacothrix saxatilis
Herbert L. Mason
1923-6-20
524 a
Santa Barbara
seacoast n Santa Barbara
Comment
JEPS36639
Malacothrix saxatilis var. arachnoidea
Herbert L. Mason
1928-10-3
4986
Monterey
4 mi above Mission; Carmel River
Comment
UC565536
Malacothrix saxatilis var. arachnoidea
H. L. Mason
1929-10-3
4986
Monterey
4 mi above Mission; Carmel River
Comment
UC635194
Malosma laurina
H. L. Mason
1923-6-17
468
Santa Barbara
Santa Barbara, Mountain Drive
Comment
GH346914
Malus fusca
H. L. Mason
1932-7-21
7101
Unknown
Big Lagoon
Comment
UC555510
Malus fusca
H. L. Mason
1932-7-21
7101
Humboldt
Big Lagoon
Comment
UC635685
Marah oregana
H. L. Mason
1927-4-23
3681
San Mateo
between La Honda and Pescadero Creek
Comment
UC632796
Marah watsonii
H. L. Mason
1936-4-11
11064
Calaveras
s Sheep Ranch; San Antonio Creek
Comment
CAS-BOT-BC71147
Marsilea
Herbert L. Mason; Verne Grant
1947-7-10
13350
Modoc
Dorris Reservoir, 2 miles east of Alturas
Comment
UC1099807
Marsilea
Herbert L. Mason and Verne Grant
1947-7-10
13350
Modoc
2 mi e Alturas (Dorris Reservoir)
Comment
UC1093988
Marsilea vestita subsp. vestita
Herbert L. Mason
1928-5-3
4443
San Joaquin
4 mi n Clements
Comment
GH257618
Meconella californica
H. L. Mason
1928-2-22
4162
Unknown
San Bruno Mountains
Comment
UC635442
Meconella californica
H. L. Mason
1928-2-22
4162
San Mateo
San Bruno Mtns
Comment
UC1178935
Meconella californica
Herbert L. Mason
1953-4-2
14500
Tulare
near Aukland (on Hwy 65)
Comment
UCD86260
Melica aristata
H. L. Mason
1939-7-12
12130
Tuolumne
Yosemite National Park, northwest of Hetch-Hetchy. Near Swamp Lake.
Comment
UC1108812
Melica bulbosa
Herbert L. Mason
1936-7-31
11471
Mono
e of Saddlebag Lake (Tioga Crest); Tioga Crest
Comment
UC936196
Melica californica
H. L. Mason
1932-4-24
6983
Amador
3 mi s Ione
Comment
UC912653
Melica torreyana
H. L. Mason
1926-5-26
3238
Alameda
Niles Canyon
Comment
UC634872
Mentha X piperita
H. L. Mason
1928-10-21
5008
Mendocino
bogs along Pudding Creek Slough (near Fort Bragg); along Pudding Creek Slough
Comment
UC1039799
Mentha aquatica
Herbert L. Mason
1929-8-24
5400
Mendocino
near Fort Bragg (bog along Pudding Creek Slough); , along Pudding Creek Slough
Comment
GH400412
Mentha arvensis
H. L. Mason
1942-9-7
Unknown
3 mi S. of Upper Lake
152
Comment
UC1191788
Mentha canadensis
Herbert L. Mason
1947-8-13
13524
Modoc
ne side F Reservoir (n of Canby); ne side of F reservoir
Comment
UC1191898
Mentha canadensis
Herbert L. Mason
1947-8-9
13484
Modoc
n Alturas (e side of Fairchild Swamp); e side of Fairchild Swamp
Comment
UC634874
Mentha canadensis
H. L. Mason
1929-8-24
5399
Mendocino
Pudding Creek Slough near Fort Bragg; near Fort Bragg, Pudding Creek Slough
Comment
UC634880
Mentha pulegium
Herbert L. Mason
Oct. 1923
785
San Mateo
near summit of Jasper Ridge (toward the Hermits); near summit of Jasper Ridge toward the Hermits
Comment Read comments Sep 19 2011
UC1077088
Mentzelia dispersa
Herbert L. Mason
1938-7-11
11936
Tuolumne
w Hetch Hetchy (Margin of lake at gravel pit, Miguel Meadow); Yosemite National Park
1584
Comment
UC672665
Mentzelia micrantha
H. L. Mason
1928-4-29
4435
Contra Costa
Mount Diablo, Sycamore Canyon
Comment
RSA114050
Mentzelia pectinata
H. L. Mason
1952-4-6
14205
Kern
S of Belridge, Kern County
Comment
UC672660
Mentzelia ravenii
H. L. Mason
1926-4-26
2999
Los Angeles
Little Rock
Comment
UC1275797
Mentzelia veatchiana
H. L. Mason
1963-6-12
15206
Mono
Mono Lake, Danburg Beach
Comment
CAS-BOT-BC348487
Micropus californicus var. californicus
H. L. Mason
1933-4-30
7229
Lake
Near Aetna Springs
Comment
SEINET197650
Micropus californicus var. californicus
H. L. Mason
1938-4-14
11705
Tulare
4 mi E of Exeter
Comment
UC581122
Micropus californicus var. californicus
H. L. Mason
1934-4-28
8090
Sonoma
near orchard; Dohrman Creek, Jensen's Ranch
Comment
UC672238
Micropus californicus var. californicus
H. L. Mason
1933-4-21
7189
Santa Clara
Hendrick's Road
Comment
CAS-BOT-BC348654
Micropus californicus var. subvestitus
H. L. Mason
1932-4-28
7046
Monterey
Pajaro Hills
Comment
CAS-BOT-BC349247
Microseris nutans
H. L. Mason
1936-7-12
11243
Mariposa
Yosemite National Park. Peregoy Meadow, Glacier Point road
2255
Comment
UC673538
Mimulus
H. L. Mason
1926-4-25
2939
Orange
5 mi s Laguna
Comment
UC632786
Mimulus aurantiacus var. aurantiacus
H. L. Mason
1936-4-12
11074
Amador
near Lancha Plana; Mokelumne River
Comment
UC672542
Mimulus bicolor
H. L. Mason
1926-6-1
3364
Calaveras
near Angels Camp
Comment
UC597549
Mimulus bolanderi
H. L. Mason
1935-5-9
Stanislaus
near Arroyo del Puerto; Mount Hamilton Range
Comment
UC672457
Mimulus grandis
H. L. Mason
June 1930
5651
Sonoma
mouth Gualala River
Comment
UC1111562
Mimulus laciniatus
Herbert L. Mason
1938-7-25
12004
Tuolumne
s base Mahan Peak (Jack Main Canyon, Deep Lake); Sierra Nevada, Yosemite National Park
2438
Comment
UC1111561
Mimulus layneae
Herbert L. Mason
1938-7-22
11964
Tuolumne
n Hetch Hetchy (Vernon Lake Trail); Sierra Nevada, Yosemite National Park
2072
Comment
UC1275792
Mimulus nanus var. mephiticus
Herbert L. Mason
1963-6-24
15209
Mono
Paoha Island Mono Lake
Comment
UC1191876
Mimulus pilosus
Herbert L. Mason
1945-6-28
12600
Lake
s Lower Lake; Excelsior Valley
Comment
UC673534
Mimulus pilosus
H. L. Mason
1929-10-13
5508
Monterey
river bridge at Bradley; Salinas River
Comment
CAS-BOT-BC9495
Mimulus rubellus
Herbert L. Mason
1952-7-18
14403
Nevada
Upstream from University of California Trout Laboratory, Sage Hen Creek
1981
Comment
UC632782
Mimulus tilingii
H. L. Mason
1936-7-7
11159
Mariposa
Hetch-Hetchy Trail w Dark Hole; Yosemite National Park, Research Reserve
2438
Comment
UC672533
Mimulus torreyi
H. L. Mason
1923-7-14
594
Tuolumne
Mather
Comment
UC672527
Mimulus tricolor
H. L. Mason
1934-5-5
8121
Lake
sw Mt. Konocti
Comment
UC1178899
Minuartia californica
Herbert L. Mason
1926-3-21
2756
Lake
Middletown to Mt. St. Helena (via Toll House Canyon)
Comment
UC936171
Minuartia nuttallii subsp. gracilis
Herbert L. Mason
1936-7-24
11320
Tuolumne
White Mountain Yosemite National Park, Conness Range
Comment
POM312383
Mollugo verticillata
H. L. Mason
1946-7-27
12953
Lake
Clear Lake, 2-3 miles north of Lakeport.
Comment
UC1191374
Mollugo verticillata
Herbert L. Mason
1946-7-27
12953
Lake
2-3 mi n of Lakeport (Clear Lake); Clear Lake
Comment
UC634863
Monardella breweri subsp. lanceolata
H. L. Mason
1923-7-26
651
Tuolumne
Hog Ranch near Mather, Sierra Nevada Mountains
Comment
SEINET4173657
Monardella undulata
Herbert L. Mason, Annetta M. Carter
1938-5-18
1417
Marin
Point Reyes Peninsula, 12 miles from Inverness
Comment
UC1191419
Monolepis nuttalliana
Herbert L. Mason and Verne Grant
1947-7-10
13339
Modoc
2 mi. e. Alturas (Dorris Reservoir); Dorris Reservoir
Comment
GH427297
Monolopia congdonii
H. L. Mason
1932-4-3
6912
Unknown
Five miles east of Lost Hills
Comment
JEPS35213
Monolopia major
H. L. Mason
1932-3-20
Alameda
plain e Mountain House (about 13 mi ne of Livermore)
Comment
NY230638
Monolopia stricta
H. L. Mason
1935-5-2
9314
Kern
Two miles west of Lost Hills, northwestern Kern County
Comment
UC565487
Monolopia stricta
H. L. Mason
1932-4-3
6911
Kern
between Blackwell's Corner and Lost Hills
Comment
UC1056305
Monoptilon bellidiforme
Herbert L. Mason
1935-4-30
8297
Kern
near Inyokern
Comment
UC672205
Monoptilon bellidiforme
Herbert L. Mason
1920-4-28
3100
San Bernardino
Box S Ranch Mojave Desert
Comment
UC1051456
Monoptilon bellioides
Herbert L. Mason
1952-4-7
14210
Riverside
Palm Springs Palm Canyon
Comment
CAS-BOT-BC444617
Montia chamissoi
Herbert L. Mason
1936-7-12
11219
Mariposa
Sierra Nevada, Yosemite National Park. Peregoy Meadow, Glacier Point road
2255
Comment
UC1056450
Montia chamissoi
Herbert L. Mason
1936-7-12
11219
Mariposa
Peregoy Meadow, Glacier Point Road, Yosemite National Park Peregoy Meadow; Sierra Nevada, Yosemite National Park, Peregoy Meadow
2255
Comment
UC1076559
Montia fontana
Herbert L. Mason
1938-7-22
11967
Tuolumne
n of Hetch Hetchy (Vernon Lake Trail, Yosemite National Park); Sierra Nevada, Yosemite National Park, Vernon Lake Trail
2072
Comment
UC1101399
Montia fontana
Herbert L. Mason
1948-7-18
13625
Siskiyou
Grass Lake
Comment
UC1056429
Montia fontana
Herbert L. Mason
1936-3-20
11008
Tuolumne
3 mi above Tuolumne (Yosemite National Park); Sierra Nevada, Yosemite National Park
Comment
UC635320
Montia linearis
H. L. Mason
1924-6-18
1052
Plumas
n of Graeagle
Comment
A343914
Morella californica
H. L. Mason
1928-8-25
4926
Unknown
At border of deep forest and pygmy forest; mesa, one mile east of mouth of Noyo River, Noyo
Comment
UC635072
Mucronea californica
Herbert L. Mason
1923-6-23
544
Monterey
10 mi above Carmel; Carmel River
Comment
POM313207
Muhlenbergia asperifolia
H. L. Mason
1947-8-15
13542
Modoc
Mouth of Crane Creek on Willow Ranch, east side of Goose Lake.
Comment Read comments Aug 21 2013
UC1106329
Muhlenbergia filiformis
Herbert L. Mason, B. Fuller, and H. Whisler
1958-7-13
38
Nevada
bog 1 mi w University of California Trout Laboratory (peat meadow back of stream, 12 mi n of Truckee); Sierra Nevada, Sage Hen Creek
1981
Comment
UC1111013
Muhlenbergia richardsonis
Herbert L. Mason
1933-9-2
7268
Amador
Silver Lake
Comment
UC1076195
Muilla coronata
Herbert L. Mason
1938-4-15
11727
San Bernardino
two mi n Kramer; Mohave Desert
Comment
UC1083343
Muilla maritima
Herbert L. Mason
1926-4-26
2946
Los Angeles
Pocoima Wash foothills of San Gabriel Mountains
Comment
UC1275779
Muilla transmontana
Herbert L. Mason
1963-7-4
15228
Mono
near Artesian Well (ne shore of lake); Mono Lake, Sulphur Springs
Comment
JEPS19557
Myosotis discolor
Herbert L. Mason
1946-5-19
12777
Mendocino
Cleone Lake n. of Fort Bragg; Cleone Lake
Comment
UC1076544
Myosotis discolor
Herbert L. Mason
1946-5-19
12777
Mendocino
Cleone Lake n. of Fort Bragg; Cleone Lake
Comment
UC1101360
Myosurus apetalus
Herbert L. Mason
1953-6-16
14551
Sierra
1 mi s Beckwourth Buttes
Comment
UC1112279
Myosurus apetalus
Herbert L. Mason
1952-7-11
14339
Nevada
Sage Hen Creek, 1 mi w of University of California Trout Laboratory Sage Hen Creek; Sierra Nevada
1981
Comment
CAS-BOT-BC392264
Myosurus apetalus
Herbert L. Mason
1953-6-16
14554
Plumas
Two miles east of Beckwourth
Comment
UC1101356
Myosurus apetalus var. montanus
Herbert L. Mason
1953-6-16
14554
Plumas
2 mi e Beckwourth
Comment
CAS-BOT-BC83288
Myosurus minimus
Herbert L. Mason
1952-4-14
14263
Contra Costa
3.5 miles south of Byron.
Comment
CAS-BOT-BC83293
Myosurus minimus
Herbert L. Mason
1952-4-26
14269
Contra Costa
3.5 miles south of Byron.
Comment
CAS-BOT-BC83382
Myosurus minimus
Herbert L. Mason
1952-4-26
14275
Stanislaus
3 miles east of the San Joaquin River, Hilmar Road near Crows Landing Road.
Comment
UC1101324
Myosurus minimus
Herbert L. Mason
1953-4-2
14501
Kings
about 3 mi e of Hanford
Comment
UC1101337
Myosurus minimus
Herbert L. Mason
1952-4-26
14274
Stanislaus
3 mi e of the San Joaquin River (Hilmar Road near Crows Landing Road); Hilmar Road
Comment
UC1101340
Myosurus minimus
Herbert L. Mason
1952-5-18
14294
Merced
Santa Fe Grade e of Los Banos; Santa Fe Grade
Comment
UC1738081
Myosurus minimus
H. L. Mason
1956-4-30
14274 B-2
Stanislaus
5 mi NE of Crows Landing (on Crows Landing Rd.)
Comment
UC1738085
Myosurus minimus
H. L. Mason
1957-3-22
14268 B-6
Contra Costa
3 mi S of Byron ( on road to Herdlyn)
Comment
UC1738087
Myosurus minimus
H. L. Mason
1956-5-24
14268 B-1
Contra Costa
3 mi S of Byron ( on the road to Herdlyn)
Comment
UC634958
Myosurus minimus
H. L. Mason
1931-4-5
5824
Contra Costa
Road between Marsh Creek and Livermore
Comment
CAS-BOT-BC83384
Myosurus minimus
Herbert L. Mason
1952-5-18
14288
Stanislaus
On Hilmar Road, east of the San Joaquin River about 1 mile from the junction with the Crows Landing Road.
Comment
UCD96580
Myosurus minimus
Herbet L. Mason
1952-5-18
14288
Stanislaus
near abandoned gas well, on Hilmar road, east of the San Joaquin River about 1 mile from the junction with the Crows Landing road.
Comment
POM312436
Myosurus minimus subsp. apus
H. L. Mason
1953-4-5
14510 -a
Colusa
3 miles east of Maxwell
Comment
UC1101335
Myosurus minimus subsp. apus
Herbert L. Mason
1952-4-26
14275 b
Stanislaus
3 mi e of San Joaquin River (Hilmar Road near Crows Landing Road); Hilmar Road
Comment
UC1101331
Myosurus sessilis
Herbert L. Mason
1952-4-26
14269
Contra Costa
3.5 mi s of Byron
Comment
UC1101332
Myosurus sessilis
Herbert L. Mason
1952-4-26
14270
Contra Costa
3.5 mi s of Byron
Comment
UC1101359
Myosurus sessilis
Herbert L. Mason
1952-3-13
14200
Contra Costa
3.3 mi s Bryon
Comment
CAS-BOT-BC101814
Myrica hartwegii
Herbert L. Mason
1936-7-11
11208
Mariposa
Big Creek, a tributary of the South Fork of the Merced River, near Wawona
1402
Comment
UC1101487
Myriophyllum hippuroides
Herbert L. Mason and Verne Grant
1946-8-14
13014
Butte
Canal near big pond on Sacramento Outing Club, Butte Sink.
Comment
UC635570
Myriophyllum quitense
H. L. Mason
1929-10-4
5466
El Dorado
Lagoons, W side of Lake Tahoe above Emerald Bay, 14 mi from Tahoe City.
Comment
UC1099997
Najas guadalupensis
Herbert L. Mason, S. Galen Smith
1948-8-10
8312
Merced
w of South Dos Palos (border of Lyon and Hoag Ranch)
Comment
UC1099998
Najas guadalupensis
Herbert L. Mason, S. Galen Smith
1948-7-30
8254
Merced
about 7 mi ne of junction of Merced River and San Joaquin River
Comment
UC1100016
Najas guadalupensis
Herbert L. Mason, Verne Grant
1946-8-15
13008
Colusa
2 mi w of Colusa (on Williams Highway by bridge)
Comment
POM312984
Najas guadalupensis
H. L. Mason, Verne Grant
1946-8-15
13008
Colusa
2 miles west of Colusa on Williams highway by bridge
Comment
UC672366
Nama demissa var. demissa
Herbert L. Mason
1926-4-28
3077
San Bernardino
Box S Ranch San Bernardino Mountains, Box S Ranch ((Box S Ranch), San Bernardino Mountains)
Comment
UC1051484
Nama pusilla
Herbert L. Mason
1952-4-11
14255
San Bernardino
Black lavas n of Pisgah Crater; Black lavas
Comment
POM312924
Narthecium californicum
H. L. Mason
1950-7-15
14053
Trinity
Summit of grade, Scott Mountain
Comment
UC912631
Nassella lepida
Herbert L. Mason
1932-4-28
7052
Alameda
Laundry farm Oakland Hills
Comment
UC1199830
Navarretia atractyloides
Herbert L. Mason
1946-6-8
12844
Santa Barbara
s side Big Pine Mountain (Bluff Camp)
Comment
RSA310959
Navarretia capillaris
H. L. Mason
1939-7-7
12156
Nevada
Three miles west of Donner Summit
2073
Comment
UC907877
Navarretia capillaris
Herbert L. Mason
1932-9-9
7184
Calaveras
w Ebbett's Pass (Sierra Nevada); , w of Ebbett's Pass
Comment
SEINET196212
Navarretia cotulifolia
Herbert L. Mason
1934-4-30
8111
Napa
Tributary of Putah Creek, Pope Valley
Comment
POM310912
Navarretia divaricata
H. L. Mason
1941-7-12
12478
Tuolumne
Miguel Meadows, Yosemite National Park
Comment
UC908211
Navarretia divaricata
Herbert L. Mason
1941-6-10
12484
Tuolumne
east of North Mountain, North Mountain Ridge, Yosemite National Park,
Comment
UC9637755
Navarretia divaricata
Herbert L. Mason
Jul 7 1939-Jul 8 1939
12150
Nevada
3 mi w Donner Summit
2072
Comment
UC971707
Navarretia divaricata
H. L. Mason
1941-7-12
12478
Tuolumne
Miguel Meadows Yosemite National Park
Comment
UCD39813
Navarretia divaricata
Herbert L. Mason
1946-6-8
12852
Santa Barbara
San Rafael Mountains, Big Pine Mountain, summit of road.
Comment
UC963757
Navarretia divaricata
Herbert L. Mason
1926-5-29
3295
Nevada
3 mi w Cisco; Crystal Lake
1767
Comment
UC908393
Navarretia divaricata subsp. vividior
Herbert L. Mason
1941-7-12
12480 a
Tuolumne
Miguel Meadows, Yosemite National Park
Comment Read comments Aug 18 2015
UC665599
Navarretia hamata subsp. parviloba
Herbert L. Mason
1941-7-21
12471
Santa Barbara
s of Casmalia
Comment
CAS-BOT-BC230308
Navarretia heterandra
Herbert L. Mason
1946-5-30
12791
Lake
Locomono Creek near Middletown
Comment
SEINET200255
Navarretia heterandra
Herbert L. Mason
1953-6-8
14526
Lake
Locomono Meadow, north of Middletown
Comment
UC908879
Navarretia heterandra
Herbert L. Mason
1946-5-30
12816
Colusa
near Eppersons; Bear Valley
Comment
UC908140
Navarretia intertexta
H. L. Mason
1924-6-26
1096
Plumas
Blairsden
Comment
UC908145
Navarretia intertexta
H. L. Mason
1933-5-29
8243
El Dorado
Shingle Springs, Sierra Nevada foothills Sierra Nevada
Comment
UC908165
Navarretia intertexta
Herbert L. Mason
1946-5-30
12798
Lake
3 mi e Middletown
Comment
UC908208
Navarretia intertexta
H. L. Mason
1926-5-28
3260
El Dorado
between Shingle Springs and Coloma (Rose Springs (Eggers), Sierra Nevada foothills); Sierra Nevada, Rose Springs
396
Comment
UC908383
Navarretia intertexta
Herbert L. Mason
1946-5-30
12790
Lake
near Middletown; Locomono Creek
Comment
UCD48474
Navarretia intertexta
H. L. Mason
1945-6-28
12594
Lake
3 miles east of Middletown, Lake County, California.
Comment
UC908428
Navarretia intertexta
Herbert L. Mason
1945-6-29
12613
Lake
wash of Kelsey Creek Kelsey Creek
Comment
UCD48480
Navarretia intertexta
Herbert L. Mason
1926-5-28
3260
El Dorado
Rose Springs (Eggers), between Shingle Springs and Coloma, Sierra Nevada foothills, El Dorado County.
396
Comment
UC1106906
Navarretia intertexta subsp. propinqua
Herbert L. Mason
1946-7-13
13449
Modoc
w end Fandango Pass (near Goose Lake, on road to Fort Bidwell)
Comment
UC1178896
Navarretia intertexta subsp. propinqua
Herbert L. Mason
1947-7-8
13315
Modoc
Cedar Pass, summit of Warner Range Warner Range
1920
Comment
UC908642
Navarretia intertexta subsp. propinqua
Herbert L. Mason
Placer
n of Lake Tahoe; Squaw Creek Valley
1889
Comment
UCD48414
Navarretia jaredii
Herbert L. Mason
1946-6-7
12834
Santa Barbara
Serpentine ridge between Camuesa Creek and Oso Creek, south of Little Pine Mountain. Santa Barbara County, California.
762
Comment
CAS-BOT-BC230319
Navarretia jepsonii
Herbert L. Mason
1946-5-30
12792
Lake
Locomono Creek near Middletown
Comment
SEINET197686
Navarretia jepsonii
Herbert L. Mason
1945-6-28
12595
Lake
Just below bridges east of Middletown.
Comment
UC1178924
Navarretia jepsonii
Herbert L. Mason
1953-6-8
14525
Lake
Guenoc Ranch; entrance
Comment
UC971993
Navarretia jepsonii
Herbert L. Mason
1952-6-19
14307
Colusa
Black Diamond Ridge Mendocino National Forest
609
Comment
UCD48438
Navarretia jepsonii
Herbert L. Mason
1946-5-30
12792
Lake
Locomono Creek near Middletown, Lake County, California.
Comment
UC908436
Navarretia leptalea subsp. bicolor
Herbert L. Mason
Jul 7 1939-Jul 8 1939
12148
Nevada
three mi w Donner Summit; w of Donner Summit
2072
Comment
UC908434
Navarretia leptalea subsp. bicolor
Herbert L. Mason
1923-7-28
663
Tuolumne
Porcupine Flat
Comment
UC963753
Navarretia leucocephala
H. L. Mason
1929-4-7
5172
Stanislaus
6 mi w Oakdale
Comment
UC700271
Navarretia leucocephala subsp. pauciflora
H. L. Mason
1945-5-12
12583
Lake
5 mi n Lower Lake; ; 5 mi. N of Lower Lake, Lake Co.
Comment
UC908077
Navarretia leucocephala subsp. pauciflora
Herbert L. Mason
1945-5-12
12584
Lake
3 mi n Lower Lake
Comment
UC1191635
Navarretia linearifolia subsp. linearifolia
Herbert L. Mason
1947-8-8
13455
Modoc
nw Alturas (Ingalls Swamp); n of Big Sage Reservoir, Ingalls Swamp
Comment
GH91332
Navarretia pauciflora
H. L. Mason
1945-5-12
12583
Unknown
Playa strewn with obsidion rubble and surrounded by chaparral, 5 miles north of Lower Lake
Comment
GH91333
Navarretia pauciflora
H. L. Mason
1945-5-13
12583
Unknown
Playa strewn with obsidion rubble and surrounded by chaparral, Lakeport highway 5 miles north of Lower Lake
Comment
POM312615
Navarretia prostrata
H. L. Mason
1952-5-18
14292
Merced
Santa Fe Grade east of Los Banos, San Joaquin Valley
Comment
UC908884
Navarretia pubescens
Herbert L. Mason
1946-5-30
12787
Lake
near Middletown; Locomono Meadow
Comment
SEINET196697
Navarretia pubescens
Herbert L. Mason
1935-5-30
8330
Lake
Between Lower Lake and Knoxville Mine.
Comment
UC908882
Navarretia pubescens
H. L. Mason
1938-5-10
11822
Madera
n of Wood Lake (on Sequoia National Park road); Sierra Nevada
1828
Comment Read comments Jul 18 2020
UC909038
Navarretia setiloba
Herbert L. Mason
1935-5-2
8387
Kern
e of Bakersfield
Comment
UC908875
Navarretia squarrosa
H. L. Mason
1926-6-15
3394
Alameda
University of California Campus, Berkeley Berkeley, University of California Campus
Comment
UC908405
Navarretia tagetina
Herbert L. Mason
1945-6-28
12593
Lake
e of Middletown (just below bridge)
Comment
UC1111588
Navarretia viscidula
Herbert L. Mason
1947-5-18
14791
Tehama
w of Paskenta (base of Paskenta Grade); Paskenta Grade
Comment
UC909076
Navarretia viscidula
Herbert L. Mason
1935-5-30
8321
Napa
just s Napa State Hospital
Comment
SEINET10461225
Nemacladus interior
Mason
1938-7-6
Mason 11859
Tuolumne
Dry ridge between Swamp Lake and Miguel Meadow
1646
Comment
SEINET10458402
Nemacladus longiflorus
Mason
1926-4-30
Mason 3145
San Diego
Oak Grove
853
Comment
UC635588
Nemacladus longiflorus var. longiflorus
H. L. Mason
1926-4-30
3145
San Diego
Oak Grove
853
Comment
UC635592
Nemacladus longiflorus var. longiflorus
H. L. Mason
April 1926
3177 a
San Diego
Oak Grove
Comment
SEINET10461249
Nemacladus montanus
Mason
1935-5-30
Mason 10000
Napa
4 miles north of Knoxville Mines
Comment
SEINET3815167
Nemacladus rubescens var. rubescens
Herbert L. Mason
1935-4-30
8281 c
San Bernardino
Head of Poison Canyon
Comment
SEINET10461004
Nemacladus secundiflorus
Mason
1927-5-16
Mason 3736
San Luis Obispo
Comment
UC595055
Nemophila heterophylla
H. L. Mason
1938-5-1
11743
Lake
Barlett Springs Bartlett Springs
Comment
POM247272
Nemophila maculata
H. L. Mason
1936-4-10
11053
Calaveras
Road from Altaville to Murphy s, 0.25 miles east of Angel s Camp.
Comment
UC588131
Nemophila maculata
H. L. Mason
1936-4-10
11053
Calaveras
one-fourth mi e Angel's Camp (road from Altaville to Murphy's); e of Angel's Camp
Comment
POM256414
Nemophila pedunculata
H. L. Mason
1938-5-1
11744
Lake
Bartlett Springs.
Comment
UC1178999
Nemophila pedunculata
Herbert L. Mason
1947-7-8
13313
Modoc
Cedar Pass , Cedar Pass (summit Warner Range)
1920
Comment
UC592127
Nemophila pedunculata
H. L. Mason
1929-3-15
5070
Santa Clara
San Antonio Valley Mount Hamilton Range, San Antonio Valley
Comment
UC672359
Nemophila pedunculata
Herbert L. Mason
1926-3-21
2773
Lake
St. Helena Creek St. Helena Creek (along streams)
Comment
UC595050
Nemophila spatulata
H. L. Mason
1938-7-15
11959
Tuolumne
Tamarack Flat , Tamarack Flat (Yosemite National Park)
1950
Comment
UC1191770
Nicotiana attenuata
Herbert L. Mason and S. Galen Smith
1948-8-19
8364
Merced
about 2 mi ne Merced (on Snelling highway)
Comment
UC570704
Nicotiana glauca
H. L. Mason
1928-10-2
4983
Monterey
1 mi below Salinas (Salinas River); Salinas River
Comment
UC570698
Nicotiana obtusifolia
Herbert L. Mason
1926-4-27
3069
San Bernardino
Dead Man Point; Mojave Desert
Comment
A356882
Notholithocarpus densiflorus
H. L. Mason
1934-9-3
Unknown
White plains, three miles east of Mendocino City
Comment
UC985676
Nuphar lutea subsp. polysepala
Herbert L. Mason, Verne Grant
1947-7-12
13388
Modoc
several miles s of Alturas (Irrigation ditch by Jones' Lane, off Highway 395)
Comment
UC985680
Nuphar lutea subsp. polysepala
Herbert L. Mason, Verne Grant
1946-8-14
13029
Butte
Canal near big pond on Sacramento Outing Club, Butte Sink Butte Sink; , Sacramento Outing Club
Comment
UC635508
Nuphar lutea subsp. polysepala
H. L. Mason
1924-6-20
1089
Plumas
in a lily pond near Greagle Lodge
Comment
UC672087
Odontostomum hartwegii
Herbert L. Mason
1931-5-9
5877
Shasta
hills n. Redding
Comment
UC673620
Odontostomum hartwegii
Herbert L. Mason
1928-5-4
4517
El Dorado
between Green Valley and Eggars
Comment
CAS-BOT-BC140429
Oemleria cerasiformis
H. L. Mason
1921-7-14
s.n.
San Mateo
Pescadero Creek
Comment
UC1191952
Oenanthe sarmentosa
Herbert L. Mason
1946-7-24
12928
Marin
2nd. lake s. Bear Valley (on rd to Lake Ranch)
Comment
UC634687
Oenothera primiveris subsp. primiveris
H. L. Mason
1926-4-27
3074
San Bernardino
near Victorville
Comment
UC672295
Oreostemma alpigenum var. andersonii
H. L. Mason
1923-7-28
654
Tuolumne
White Wolf, Mather to Tuolumne Meadows (Tioga Pass Rd) Sierra Nevada Mts, Yosemite National Park
2438
Comment
UC1076295
Orobanche bulbosa
Herbert L. Mason
1923-6-19
518
Ventura
above Ojai (Topatopa Mountains, Horn Canyon); Topatopa Mountains, Horn Canyon
Comment
JEPS19482
Orobanche californica subsp. californica
Herbert L. Mason
1927-7-28
3983
San Mateo
Pigeon Point.
Comment
UC1199825
Orobanche californica subsp. grayana
Herbert L. Mason
1939-7-11
12127
Tuolumne
Yosemite National Park, Miguel Meadow, west of Hetch Hetchy Valley.
Comment
UC1076298
Orobanche cooperi
Herbert L. Mason
1926-4-26
3021
Los Angeles
Mohave Desert, Little Rock Creek Little Rock Creek; Mohave Desert, Little Rock Creek
Comment
JEPS19481
Orobanche fasciculata
Herbert L. Mason
1925-4-12
1321
Marin
Mt. Tamalpais.
Comment
UC1076301
Orobanche fasciculata
Herbert L. Mason
1926-5-7
2704
Contra Costa
Near Summit of Mount Diablo.
Comment
UC1076305
Orobanche fasciculata
Herbert L. Mason
1926-6-18
502
Ventura
Timber Canyon, Topatopa Mts.
Comment
UC1076307
Orobanche fasciculata
Herbert L. Mason
1934-5-5
8115
Lake
Plain southwest of Mount Konocti.
Comment
UC1076308
Orobanche fasciculata
Herbert L. Mason
1925-4-12
1321
Marin
Mt. Tamalpais.
Comment
UC1076312
Orobanche uniflora subsp. occidentalis
Herbert L. Mason
1929-4-29
5229
Lake
Hopland Grade, 3 miles south of Hopland.
Comment
UC1076297
Orobanche vallicola
Herbert L. Mason
1929-9-21
5432
Contra Costa
3 mi above Clayton (Marsh Creek Road); Marsh Creek Road
Comment
UC592173
Osmorhiza berteroi
Herbert L. Mason
1926-6-6
3371
Santa Cruz
Felton
Comment
UC592162
Osmorhiza berteroi
H. L. Mason
1926-3-22
2788
Napa
between Calistoga to Petrified Forest
Comment
UC566811
Osmorhiza brachypoda
H. L. Mason
1927-6-14
3757
Los Angeles
San Antonio Canyon
914
Comment
UC571125
Oxalis albicans subsp. californica
Herbert L. Mason
1926-4-25
2927
Orange
5 mi s Laguna
Comment
UC634783
Oxypolis occidentalis
H. L. Mason
1925-7-29
2185
Tuolumne
near Mather; Hog Ranch
Comment
UC566648
Packera breweri
H. L. Mason
1928-5-6
4555
Alameda
Cedar Mountain Mount Hamilton Range
Comment
UC1081561
Packera cana
Herbert L. Mason
1936-8-1
11478
Mono
Leevining Canyon Sierra Nevada, Yosemite National Park, Leevining Canyon (Yosemite National Park, Sierra Nevada)
Comment
UC912483
Packera greenei
Herbert L. Mason
1930-6-1
5682
Lake
St. Helena Creek, slopes of Mount St. Helena Mount St. Helena
Comment
UC965583
Packera streptanthifolia
Herbert L. Mason
1952-7-18
14400
Nevada
upstream from University of California Trout Laboratory (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
CAS-BOT-BC325493
Packera werneriifolia
Herbert Louis Mason
1936-7-24
11329
Tuolumne
White Mountain, Mount Conness Range, Sierra Nevada.
3505
Comment
UC566650
Packera werneriifolia
H. L. Mason
1922-8-2
341
Tuolumne
Mt. Dana Sierra Nevada Mountains, , Mt. Dana (Yosemite National Park)
Comment
UC714475
Packera werneriifolia
H. L. Mason
1936-7-23
11308
Tuolumne
slopes Mount Conness (Sierra Nevada); , Mount Conness
3505
Comment
CAS-BOT-BC121244
Paeonia californica
H. L. Mason
1926-4-30
3149
San Diego
Oak Grove
853
Comment
UC1101579
Panicum acuminatum var. acuminatum
Herbert L. Mason, S. Galen Smith
1949-8-19
8372
Merced
bridge below Snelling; San Joaquin River
Comment
POM313202
Panicum dichotomiflorum
H. L. Mason
1945-9-19
12720
Colusa
Below caus[e]way over Butte Sink spillway, East bank of Sacramento River, 1 mile north of Colusa.
Comment
SACT001636
Panicum huachucae
Herbert Mason
1949-8-19
Merced
Sandy river bottom.
Comment
UC570862
Parnassia californica
Herbert L. Mason
1923-8-22
761
Tuolumne
Tuolumne River, Lyell Fork Tuolumne River; , Lyell Fork
Comment
UC1178909
Parvisedum pentandrum
Herbert L. Mason
1940-5-5
12278
Merced
Inner South Coast Range, North Twin Peak (Diablo Range), North Fork of Los Banos Creek North Fork of Los Banos Creek; Inner South Coast Range, North Twin Peak
Comment
UC571849
Parvisedum pumilum
H. L. Mason
1935-5-5
3645
Napa
3 mi s of Napa City
Comment
UC571854
Parvisedum pumilum
H. L. Mason
1935-5-5
3494
Napa
3 mi s of Napa City
Comment
UCD88926
Paspalum distichum
H. L. Mason
1945-9-18
12701
Sutter
Sutter By-pass near bridge on Yuba City. Knight's Landing Highway.
Comment
SACT001672
Paspalum distichum
Herbert Mason
1945-9-18
Sutter
Primary invader of ponds, margins of pools on overflow lands of Sutter by-pass near bridge on Yuba City-KIght's Landing Highway.
Comment
UC635622
Paxistima myrsinites
H. L. Mason
1934-4-28
8079
Sonoma
Dohrman Creek at head of Jensen's Ranch
Comment
UC573132
Pectocarya setosa
Herbert L. Mason
1932-4-1
6889
Kern
5 mi s Muroc; Mojave Desert
Comment
UC1076524
Pedicularis attollens
Herbert L. Mason
1941-7-7
12513
Madera
just s of the Givens Lake Trail junction; Sierra Nevada, Yosemite National Park
2865
Comment
UC1199881
Pedicularis attollens
H. L. Mason
1924-6-26
Plumas
Blairdsen
Comment
UC672550
Pedicularis groenlandica
H. L. Mason
1922-7-25
328
Mariposa
Porcupine Flat, Tioga Pass Road Porcupine Flat
2133
Comment
UC632784
Pedicularis semibarbata
H. L. Mason
1936-7-6
11146
Mariposa
Hetch Hetchy Trail w of Yosemite Creek; Yosemite National Park
2377
Comment
UC672546
Pedicularis semibarbata
H. L. Mason
1927-6-15
3771
San Bernardino
summit of Mount Baldy
2438
Comment
UC1076538
Pellaea breweri
Herbert L. Mason
1938-7-29
12048
Tuolumne
w of Tower Peak (Saurian Crest); Sierra Nevada, Yosemite Nat'l Park
3200
Comment
UC565585
Penstemon centranthifolius
H. L. Mason
1926-4-27
3032
Los Angeles
Rock Creek San Gabriel Mountains, Rock Creek
Comment
UC566668
Penstemon centranthifolius
H. L. Mason
1929-3-31
5156
Contra Costa
sand dike along San Joaquin River (Antioch); sand dike along San Joaquin River, Antioch
Comment
CAS-BOT-BC265315
Penstemon davidsonii var. davidsonii
Herbert L. Mason
1936-7-23
11291
Tuolumne
Slope of Mount Conness
3505
Comment
UC565580
Penstemon deustus
Herbert L. Mason
1926-5-30
3310
El Dorado
back Emerald Bay; Lake Tahoe, back of Emerald Bay
Comment
UC712255
Penstemon heterodoxus
Herbert L. Mason
1936-7-23
11307
Tuolumne
alpine slopes of Mount Conness Sierra Nevada, Mount Conness
3505
Comment
UC1093874
Penstemon laetus var. laetus
Herbert L. Mason
1938-7-26
12017
Tuolumne
s Jack Main Meadows (Andrews Peak, Yosemite National Park); Sierra Nevada, Yosemite National Park
2438
Comment
UC565591
Penstemon newberryi var. newberryi
Herbert L. Mason
1923-7-21
631
Tuolumne
Hetch Hetchy Valley - Canyon Ranch
Comment
UC565599
Penstemon rydbergii var. oreocharis
Herbert L. Mason
1926-6-19
1085
Plumas
Gold Lake
Comment
UC912264
Pentachaeta exilis
Herbert L. Mason
1933-4-21
7192
Santa Clara
lower slopes Mount Hamilton
Comment
UC1191182
Pentagramma pallida
Herbert L. Mason
1935-5-1
8371
Tulare
n of Kernville (Kern River); Sequoia National Park
Comment
CAS-BOT-BC77150
Pentagramma triangularis subsp. triangularis
Miss. Mason
s.n.
Orange
Orange
Comment
UC1039642
Perityle emoryi
Herbert L. Mason
1935-4-30
8293
San Bernardino
sw Trona (Poison Canyon); Poison Canyon
Comment
CAS-BOT-BC419349
Persicaria punctata
Herbert L. Mason; S. Galen Smith
1948-8-9
8286
Merced
Pacheco Creek, about 10 miles west of summit of Pacheco Pass
Comment
UC1076251
Petrorhagia dubia
Herbert L. Mason
1927-5-11
3735
Yuba
flat w North San Juan; flat w of North San Juan
Comment
UC672408
Phacelia
Herbert L. Mason
1931-5-9
5867
Siskiyou
Shasta Creek
Comment
UC1275798
Phacelia bicolor var. bicolor
Herbert L. Mason
1963-6-12
15207
Mono
Danburg Beach Mono Lake
Comment
UC672429
Phacelia bolanderi
Herbert L. Mason
1928-8-26
4935
Mendocino
1 mi above Fort Bragg; Pudding Creek
Comment
UC1111530
Phacelia breweri
Herbert L. Mason
1957-5-11
14736
San Benito
4-5 mi e Hernandez (entrance to canyon); Clear Creek Canyon
Comment
UC672337
Phacelia breweri
Herbert L. Mason
1928-5-6
4550
Alameda
Cedar Mountain
Comment
POM256513
Phacelia breweri
H. L. Mason
1938-5-3
11750
Contra Costa
Trail between Juniper Camp and Deer Flat, Mount Diablo.
Comment
UC753511
Phacelia cicutaria var. hispida
Herbert L. Mason
1946-6-7
12827
Santa Barbara
Middle Cameusa Camp San Rafael Range
762
Comment
UC753520
Phacelia cicutaria var. hispida
Herbert L. Mason
1946-6-7
12842
Santa Barbara
road up Little Pine Mountain San Rafael Range
914
Comment
UC672404
Phacelia crenulata var. ambigua
Herbert L. Mason
1926-4-28
3104
San Bernardino
Box S Ranch, Mohave Desert
Comment
UC1076047
Phacelia dalesiana
Herbert L. Mason
1947-5-17
14773
Siskiyou
Trinity-Siskiyou county line Scott Mountain divide
Comment Read comments Jul 5 2017
UC672415
Phacelia distans
Herbert L. Mason
1928-5-6
4564
Alameda
Cedar Mountain
Comment
UC672419
Phacelia distans
Herbert L. Mason
1928-4-28
4418
Marin
Tiburon Peninsula
Comment
UC672420
Phacelia distans
Herbert L. Mason
1933-4-21
7202
Santa Clara
n Mount Hamilton; Packard Ridge
Comment
UC672425
Phacelia distans
Herbert L. Mason
1929-3-15
5053
Contra Costa
canyon back of Nortonville
Comment
UC672342
Phacelia douglasii
H. L. Mason
1932-3-20
6838
Contra Costa
Antioch Sand Hills
Comment
UC1077105
Phacelia hastata subsp. compacta
Herbert L. Mason
1938-7-28
12038
Tuolumne
Tilden Lake Sierra Nevada, Yosemite National Park, Macomb Ridge
3048
Comment
UC753521
Phacelia imbricata
Herbert L. Mason
1946-6-8
12849
Santa Barbara
Bluff Camp San Rafael Range (along road)
1371
Comment
UC1178996
Phacelia insularis var. continentis
Herbert L. Mason
1940-5-22
12301
Mendocino
headland n Pudding Creek Slough (near Fort Bragg)
Comment
UC1051496
Phacelia pachyphylla
Herbert L. Mason
1952-4-11
14248
San Bernardino
just e Daggett; Black Lava Bed
Comment
POM252665
Phacelia phacelioides
H. L. Mason
1938-5-3
11749
Contra Costa
Trail between Juniper Camp and Deer Flat, Mount Diablo.
Comment
UC1076535
Phacelia racemosa
Herbert L. Mason
1938-7-22
11961
Tuolumne
n Hetch Hetchy; Sierra Nevada, Yosemite National Park, Beehive
1996
Comment
UC672348
Phacelia ramosissima var. montereyensis
Herbert L. Mason
1927-7-30
3995
Monterey
Carmel
Comment
POM256519
Phacelia ramosissima var. subglabra
H. L. Mason
1939-7-18
12174
El Dorado
North side of Luther Pass, one mile west of Grass Lake Meadow.
Comment
UC588130
Phacelia rattanii
Herbert L. Mason
1937-5-27
11551
Lake
six mi n Lower Lake
Comment
RSA74699
Phacelia rattanii
H. L. Mason
1937-5-27
11551
Lake
6 miles N of Lower Lake.
Comment
UC1051472
Phacelia rotundifolia
Herbert L. Mason
1952-4-11
14254
San Bernardino
black lavas n Pisgah Crater
Comment
UC1077133
Phacelia rotundifolia
Herbert L. Mason
1940-3-22
12239
Inyo
Titus Canyon Death Valley National Monument, Graevine Mountains (in gravelly wash)
Comment
UC672350
Phacelia tanacetifolia
Herbert L. Mason
1932-4-1
6887
Kern
5 mi s Muroc; Mojave
Comment
UC672351
Phacelia tanacetifolia
Herbert L. Mason
1926-4-10
2807
Alameda
Arroyo Mocho Canyon Cedar Mt.
Comment
CDA40453
Phacelia tanacetifolia
Steve Mason, Joey Artero
1993-4-24
15
San Luis Obispo
Carrizo Plain Natural Area, northeast side road off Elkhorn Rd., 1.2 mi. south of Elkhorn and Simmler Roads' junction, 300 feet up road on left roadside past washing machine.
Comment
UC1076466
Phalacroseris bolanderi
Herbert L. Mason
1941-7-7
12499
Madera
s of Givens Meadows; Yosemite National Park, Buck Camp
Comment
UC1178971
Phalaris lemmonii
Herbert L. Mason
1929-4-7
5174
Stanislaus
six mi w Oakdale
Comment
UC936192
Phalaris lemmonii
Herbert L. Mason
1932-4-17
6953
Santa Clara
Miller and Lux Ranch se Gilroy
Comment
SEINET4691194
Phalaris paradoxa
H. L. Mason
1940-5-3
12252
Fresno
San Joaquin Valley, Lyon and Hoag Ranch, 9 miles southeast of South Dos Palos
30
Comment
UC1100412
Phleum pratense
Herbert L. Mason
1947-8-13
13537
Modoc
n Canby (ne side of F reservoir); ne side of F reservoir
Comment
UC714200
Phlox caespitosa
Herbert L. Mason
1939-7-28
11405
Mono
vicinity Mount Dana; Sierra Nevada, Dana Plateau
3657
Comment
UC714201
Phlox caespitosa
H. L. Mason
1936-7-31
11456 A
Mono
e of Saddlebag Lake; Sierra Nevada, Tioga Crest
3474
Comment
UC1186123
Phlox douglasii subsp. rigida
H. L. Mason
1923-8-9
741
Tuolumne
n of 2nd Gaylor Lake; Sierra Nevada Mountains, Yosemite National Park
3048
Comment
UC908447
Phlox gracilis
Herbert L. Mason
1924-6-18
1059
Sierra
1 mi from Gold Lake (near Plumas-Sierra County line)
1981
Comment
UC909129
Phlox gracilis
Herbert L. Mason
1925-3-23
1307
Alameda
Sunol
Comment
UC965587
Phlox gracilis
Herbert L. Mason
1952-7-16
14351
Nevada
1 mi w Univ. of Calif. Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC1093649
Phoenicaulis cheiranthoides
Herbert L. Mason
1957-7-6
14720
Modoc
Mill Creek; Warner Mountains, Mill Creek
Comment
UC639128
Phoradendron densum
H. L. Mason and L. Constance
1939-12-21
Napa
on shoulder of Mt. St. Helena (on Middletown-Calistoga rd. at Lake Co. line)
Comment
UC1081525
Phoradendron pauciflorum
Herbert L. Mason
1936-4-10
11046
Calaveras
Calaveras Big Trees
Comment
UC1039591
Phoradendron villosum
Herbert L. Mason
1926-1-1
2591
Mendocino
summit Elk Mt.
Comment
UC1039592
Phoradendron villosum
H. L. Mason
1925-12-31
2573
Lake
<Bartlet> Mt. Rd.
Comment
UC635115
Phyla lanceolata
H. L. Mason
1929-9-9
5428
San Joaquin
San Joaquin River delta Holt; San Joaquin River delta
Comment
UC712456
Phyllodoce breweri
Herbert L. Mason
1936-7-23
11306
Tuolumne
Tioga Pass region, Mount Conness Mount Conness; Tioga Pass region, Mount Conness
3474
Comment
CAS-BOT-BC452067
Phyllospadix torreyi
Herbert L. Mason
1927-11-27
4145
Santa Barbara
Carpinteria
Comment
RSA170175
Phyllospadix torreyi
H. L. Mason
1927-11-26
s.n.
Santa Barbara
Carpinteria.
Comment
UC985936
Physalis lancifolia
Herbert L. Mason and Verne Grant
1946-8-7
12979
Colusa
8 mi n Colusa; Butte Sink
Comment
UC1055936
Pilularia americana
Herbert L. Mason
1952-4-14
14261
Contra Costa
3.5 mi s Byron
Comment
UC1083386
Pinus
Herbert L. Mason
1941-3-27
12391
Santa Barbara
Burton Mesa Pine Canyon, Burton Mesa (Pine Canyon, w Santa Barbara County)
Comment
CAS-BOT-BC78271
Pinus albicaulis
Herbert L. Mason
1936-8-6
11519
Mono
between Saddlebag Lake and Conness Glacier
3200
Comment
NY34547
Pinus albicaulis
H. L. Mason
1936-8-6
11519
Mono
Hills between Saddlebag Lake and Conness Glacier
3200.4
Comment
UC665719
Pinus albicaulis
Herbert L. Mason
1936-8-6
11519
Mono
hills between Saddlebag Lake and Conness Glacier; Sierra Nevada
3200
Comment
GH357764
Pinus contorta
H. L. Mason, N. T. Mirov & W. P. Stockwell
1948-6-9
2017
Unknown
Two miles east of Mendocino City, Mendocino County
Comment
GH357768
Pinus contorta
H. L. Mason
1934-9-3
8146
Unknown
White plains three miles east of Mendocino City, Mendocino County
Comment
UC665725
Pinus contorta
H. L. Mason
1934-9-3
8148
Mendocino
just N of Point Arena
Comment
SEINET4457213
Pinus contorta
H. L. Mason
1934-1
8146
Unknown
Comment
GH311216
Pinus contorta subsp. bolanderi
H. L. Mason, N. T. Mirov & W. P. Stockwell
1948-6-9
2017
Unknown
Two miles east of Mendocino City, Mendocino County
Comment
UC665720
Pinus contorta subsp. bolanderi
Herbert L. Mason
1934-9-3
8146
Mendocino
3 mi e Mendocino City; White Plains
Comment
CAS-BOT-BC78399
Pinus contorta subsp. contorta
H. L. Mason; N. T. Mirov; Palmer Stockwell
1948-6-9
2018
Mendocino
Two miles east of Mendocino City
Comment
NY49718
Pinus contorta var. contorta
H. L. Mason
1934-9-3
8148
Mendocino
Just north of the town of Point Arena
Comment
POM264566
Pinus contorta var. contorta
H. L. Mason
1934-9-3
8146
Mendocino
White Plains, 3 miles east of Mendocino City
Comment
UC1076351
Pinus coulteri
Herbert L. Mason
1929-10-8
5480
Contra Costa
Nortonville
Comment
UC513600
Pinus coulteri
H. L. Mason
1933-4-21
7210
Santa Clara
ridge s Black Mountain; Mt. Hamilton Range
Comment
UC1191141
Pinus longaeva
Herbert L. Mason
1953-7-21
14564
Mono
e of Campito Mountain; White Mountains
2895
Comment
UC1061639
Pinus muricata
Herbert L. Mason
Marin
Inverness
Comment
UC1083383
Pinus muricata
Herbert L. Mason
1941-3-28
12400
Monterey
along road from Pacific Grove to Carmel; Huckleberry Hill
Comment
UC1076352
Pinus sabiniana
Herbert L. Mason
1929-10-8
5481
Contra Costa
Nortonville
Comment
UC1199828
Piperia transversa
Herbert L. Mason
1937-7-22
11619
Tuolumne
just s Miguel Meadows (just w of Hetch Hetchy Dam); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1191839
Plagiobothrys cognatus
Herbert L. Mason and Verne Grant
1947-7-12
13408
Modoc
sw of Alturas (w side of the South Fork of Pit River Valley); South Fork of Pit River Valley
Comment
UC1191851
Plagiobothrys cusickii
Herbert L. Mason and Verne Grant
1947-7-12
13421
Modoc
s of Alturas (near s end of w side road, along railroad tracks); Pit River Valley
Comment
UC1191836
Plagiobothrys mollis
Herbert L. Mason, Verne Grant
1947-7-10
13333
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
CAS-BOT-BC58796
Plagiobothrys mollis var. mollis
Herbert Louis Mason; Verne Grant
1947-7-12
13407
Modoc
W side of South Fork of Pit River Valley, SW of Alturas.
Comment
UC573147
Plagiobothrys nothofulvus
Herbert L. Mason
1928-5-6
4575
Alameda
Arroyo Mocho 6 mi from Livermore
Comment
CAS-BOT-BC58733
Plagiobothrys scouleri
Herbert Louis Mason; Verne Grant
1947-7-12
13415
Modoc
Pit River Valley, S of Alturas.
Comment
CAS-BOT-BC58747
Plagiobothrys scouleri
Herbert Louis Mason; Verne Grant
1947-7-12
13421
Modoc
Near S end of W side road, along railroad tracks, Pit River, S of Alturas.
Comment
CAS-BOT-BC58758
Plagiobothrys scouleri
Herbert Louis Mason; Verne Grant
1947-7-12
13415
Modoc
Pit River Valley, S of Alturas.
Comment
POM312568
Plagiobothrys scouleri var. hispidulus
H. L. Mason, Verne Grant
1947-7-12
13408
Modoc
West side of the South Fork of Pit River Valley, southwest of Alturas.
Comment
UC573079
Plagiobothrys stipitatus var. micranthus
H. L. Mason
1929-3-31
5144
Contra Costa
Briones Valley
Comment
UCD121009
Plagiobothrys stipitatus var. micranthus
Herbert L. Mason; Verne Grant
1947-7-12
13410
Modoc
West side of Pit River Valley, south of Alturas.
Comment
UC573071
Plagiobothrys tenellus
H. L. Mason
1932-3-20
6847
Contra Costa
Antioch sand hills
Comment
UC1111006
Plantago erecta
Herbert L. Mason
1932-4-28
7038
Monterey
Pajaro Hills
Comment
UC769969
Plantago erecta
Herbert L. Mason
1934-3-25
7947
Sacramento
Rio Linda, Keithly ranch Sacramento Valley
30
Comment
RSA130694
Plantago lanceolata
H. L. Mason
1917-04
s.n.
Santa Clara
Stanford Unversity.
Comment
UC1056426
Platanthera sparsiflora
Herbert L. Mason
1936-7-7
11166
Mariposa
w of Dark Hole (Research Reserve, Hetch Hetchy Trail); Sierra Nevada, Yosemite National Prk
2438
Comment
UC673578
Platanthera sparsiflora
Herbert L. Mason
1922-7-3
305
Mariposa
Big Tree Grove Sierra Nevada, Yosemite National Park
1524
Comment
UC912454
Plectritis ciliosa subsp. ciliosa
Herbert L. Mason
1927-5-11
3731
Yuba
near Dobbins
457
Comment
UC912460
Plectritis ciliosa subsp. ciliosa
Herbert L. Mason
1928-5-4
4512
El Dorado
4 mi n of Shingle Springs (Greene Valley); Greene Valley
Comment
UC1108833
Poa annua
Herbert L. Mason
1947-3-29
13152
Colusa
ca 3 mi ne Colusa (Butte Sink, along Butte Creek)
Comment
UCD91078
Poa glauca subsp. rupicola
H. L. Mason
1936-7-23
11312
Tuolumne
Mt. Conness, Yosemite National Park.
Comment
SACT001882
Poa nevadensis
Herbert Mason, Malcolm Nobs
1949-5-29
Modoc
2 miles east of Adin.
Comment
SEINET7294095
Poa secunda subsp. secunda
Herbert L. Mason
1952-1
14435
Nevada
Sage Hen Creek; Meadow opposite University of California Trout Laboratory.
1981
Comment
UC1100401
Poa secunda subsp. secunda
Herbert L. Mason
1948-9-4
13652
Mono
Rush Creek Mono Lake
Comment
UC1108817
Poa secunda subsp. secunda
Herbert L. Mason
1938-7-25
12009
Tuolumne
deep lake at e base of Mahan Peak; Sierra Nevada, Yosemite Nat'l Park
Comment
UCD91700
Poa secunda subsp. secunda
H. L. Mason
1938-7-28
12034
Tuolumne
Yosemite National Park. Macomb Ridge, N of Tiltill Mtn.
Comment
UC1108815
Poa wheeleri
Herbert L. Mason
1936-7-24
11331
Tuolumne
White Mt; Sierra Nevada, Conness Range
Comment
UCD91605
Poa wheeleri
H. L. Mason
1936-7-24
11332
Tuolumne
White Mountain.
Comment
UC1191805
Pogogyne floribunda
Herbert L. Mason
1947-8-9
13474
Modoc
east side of Fairchild Swamp north of Alturas.
Comment
JEPS16753
Pogogyne serpylloides
Herbert L. Mason
1934-5-5
8117
Lake
Plain Southwest of Mount Konocti.
Comment
UC570731
Pogogyne serpylloides
H. L. Mason
Apr 1930
5554
Calaveras
Hills west of San Andreas
Comment
GH400806
Pogogyne serpylloides
H. L. Mason
1930-04-01 - 1930-05-01
5554
Unknown
Hills west of San Andreas
Comment
UC1988945
Pogogyne zizyphoroides
H. L. Mason
1928-5-3
4476
Amador
Hills near Carbondale
Comment
UC570729
Pogogyne zizyphoroides
H. L. Mason
1928-5-3
4476
Amador
Hills near Carbondale
Comment
UC570730
Pogogyne zizyphoroides
Herbert L. Mason
1928-5-3
4448
San Joaquin
4 miles north of Clements
Comment
UC909080
Polemonium carneum
Herbert L. Mason
1932-4-16
6932
Alameda
summit <of road> Stonybrook Creek
Comment Read comments May 31 2011
UC635628
Polygala californica
H. L. Mason
1934-4-28
8087
Sonoma
Jensen's Ranch
Comment
GH347765
Polygala cornuta
H. L. Mason
1926-5-29
3288
Unknown
Donner Pass Road near Alta
Comment
UC1178944
Polygala cornuta var. cornuta
Herbert L. Mason
1948-7-11
13592
Shasta
Hirz Mountain
Comment
CAS-BOT-BC167835
Polygala cornuta var. fishiae
H. L. Mason
1923-6-20
524
Ventura
Camp Comfort, San Antonio Canyon, Ojai
Comment
UC1192337
Polygonum amphibium var. emersum
Herbert L. Mason
1928-9-30
4968
San Joaquin
near Holt; San Joaquin Delta
Comment
UC1083114
Polygonum amphibium var. stipulaceum
Herbert L. Mason
1936-7-15
11257 a
Tuolumne
margin of pool 0.5 mi w Mather
1371
Comment
UC1101137
Polygonum amphibium var. stipulaceum
Herbert L. Mason
1946-7-27
12950
Lake
2-3 mi n Lakeport; Clear Lake
Comment
UC1101138
Polygonum amphibium var. stipulaceum
Herbert L. Mason and Lawrence M. Reinecke
1937-7-22
11616
Tuolumne
just w Hetch Hetchy Dam (s of Miguel Meadows); Yosemite National Park, Swamp Lakes
1584
Comment
UC965565
Polygonum amphibium var. stipulaceum
Herbert L. Mason
1952-7-19
14453
Sierra
1.5 mi e Calpine (at junction of Calpine with Sierra-Beckwourth road); Sierra Nevada, Sierra Valley
1524
Comment
POM312542
Polygonum amphibium var. stipulaceum
H. L. Mason, L M Reinecke
1937-7-22
11616
Tuolumne
Yosemite Nat'l Park: Swamp Lake, just south of Miguel Meadows, just west of Hetch Hetchy Dam
1585
Comment
RSA28589
Polygonum davisiae
H. L. Mason
1940-7-30
12353
Alpine
Open Tsuga Mertensiana and Juniperus occidentalis forest, hills N of Carson Pass
2683
Comment
CAS-BOT-BC414504
Polygonum douglasii
Herbert L. Mason
1936-7-12
11229 a
Mariposa
Sierra Nevada, Yosemite National Park. Peregoy Meadow, Glacier Point road
Comment
UCD100248
Polygonum douglasii
Herbert L. Mason
1948-7-17
13598
Siskiyou
Eastern Grass Lake.
Comment
UC1056967
Polygonum douglasii subsp. douglasii
Herbert L. Mason
1936-7-29
11442
Mono
cirque below Conness Glacier (w of Saddlebag Lake)
3200
Comment
UC1178956
Polygonum douglasii subsp. douglasii
Herbert L. Mason
1925-7-31
2206
Tuolumne
Mather Sierra Nevada
Comment
UC1191245
Polygonum douglasii subsp. spergulariiforme
Herbert L. Mason
1948-7-17
13594
Siskiyou
Eastern Grass Lake
Comment
UC1101175
Polygonum hydropiperoides
Herbert L. Mason and Verne Grant
1946-8-14
13027
Butte
Sacramento Outing Club Butte Sink (canal near big pond)
Comment
UC1101177
Polygonum hydropiperoides
Herbert L. Mason
1929-9-21
5442
San Joaquin
Holt Alklaline Grasslands of San Joaquin Valley
Comment
UC1101178
Polygonum hydropiperoides
Herbert L. Mason
1928-9-30
4971
San Joaquin
near Holt; Alkaline Grasslands of San Joaquin Valley, San Joaquin Del
Comment
UC1101144
Polygonum lapathifolium
Herbert L. Mason and Verne Grant
1946-8-28
13089
San Mateo
s San Francisco (pond on Santa Cruz-Daly City Road #5)
Comment
UC1101164
Polygonum lapathifolium
Herbert L. Mason
1928-9-30
4970
San Joaquin
near Holt; Alkaline Grasslands of San Joaquin Valley, San Joaquin Del
Comment
UC1191122
Polygonum paronychia
Herbert L. Mason
1924-10-19
1118
San Francisco
Country Club Gate San Francisco, Merced Lake (in sand hills)
Comment
CAS-BOT-BC419873
Polygonum polygaloides subsp. confertiflorum
Herbert L. Mason
1948-7-17
13595
Siskiyou
Eastern Grass Lake
Comment
CAS-BOT-BC218169
Polygonum polygaloides subsp. confertiflorum
Herbert Louis Mason
1957-6-21
14706
Modoc
West side of Said Valley.
Comment
UC1056968
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1936-7-29
11441
Mono
cirque below Conness Glacier (w of Saddlebag Lake)
3200
Comment
UC1060645
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1957-7-7
14729
Nevada
sw Hobart Mills; Prosser Meadow
Comment
UC965540
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1952-7-10
14311
Nevada
1 mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
CAS-BOT-BC420026
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1952-7-10
14311
Nevada
Sierra Nevada. One mile west of University of California Trout Laboratory (12 miles north of Truckee). Sage Hen [Sagehen]
1981
Comment
UC1713244
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1957-7-6
14725
Modoc
Rim Rock, west of Goose Lake
Comment
UC1191265
Polygonum punctatum
Herbert L. Mason
1946-7-24
12922
Marin
margin of first lake s Bear Valley (2.8 mi n of Lake Ranch)
Comment
UC1191267
Polygonum punctatum
Herbert L. Mason
1928-9-30
4969
San Joaquin
near Holt; Alkaline Grasslands of San Joaquin Valley, San Joaquin Del
Comment
UC1191247
Polygonum sawatchense subsp. oblivium
Herbert L. Mason and Verne Grant
1947-7-9
13309
Modoc
Cedar Pass Warner Range (summit of range)
1920
Comment
CAS-BOT-BC420171
Polygonum sawatchense subsp. sawatchense
Herbert L. Mason; Verne Grant
1947-7-9
13288
Shasta
Highway 299, just east of Hatchet Creek summit
1219
Comment
UC1191248
Polygonum sawatchense subsp. sawatchense
Herbert L. Mason and Verne Grant
1947-7-9
13288
Shasta
Hwy 299 just e Hatchet Creek summit
1219
Comment
CAS-BOT-BC109254
Polygonum shastense
Herbert L. Mason
1936-7-21
11259
Mariposa
Sierra Nevada. Yosemite National Park. West of Tenaya Lake.
2499
Comment
UCD136912
Polypodium scouleri
Herbert L. Mason
1924-11-16
1150
Marin
Willow Camp.
Comment
UC1100389
Polypogon monspeliensis
Herbert L. Mason
1948-9-4
13644
Mono
Rush Creek Mono Lake; , Rush Creek
Comment
UC1100390
Polypogon monspeliensis
Herbert L. Mason and Verne Grant
1946-8-28
13094
San Mateo
pond on Highway 5 about 3 mi s Daly City Road
Comment
JEPS60084
Polystichum imbricans subsp. imbricans
H. L. Mason
1923-7-21
629
Tuolumne
tracks near summit of grade Hetch Hetchy R.R.; Sierra Nevada Mts., Yosemite Nat'l Park
Comment
SEINET3812422
Porterella carnosula
Herbert L. Mason
1953-7-19
14439
Sierra
Margins of marshy pond 1.5 miles E os Calpine near junction of Sierraville-Beckwith road and Calpine road, Sierra Valley
Comment
SEINET8040796
Porterella carnosula
H. L. Mason
1952-7-19
14439
Sierra
Sierra Valley, margins of marshy pond 1.5 miles E of Calpine, near junction of Sierraville-Beckwith road and Calpine road.
Comment
UC1099891
Potamogeton crispus
Herbert L. Mason, S. Galen Smith
1948-8-5
8269
San Joaquin
Trapper's Slough Robert's Island
Comment
UC1099895
Potamogeton crispus
Herbert L. Mason
1946-6-28
12877
Alameda
San Leandro Creek
Comment
CAS-BOT-BC452149
Potamogeton diversifolius
Herbert L. Mason
1945-6-29
12624
Lake
Boggs Lake at base of Mount Hanna [Hannah]
Comment
UC1100038
Potamogeton foliosus
Herbert L. Mason
1946-6-28
12878
Alameda
San Leandro Creek
Comment
CAS-BOT-BC267168
Potamogeton foliosus
H. L. Mason
1921-5-23
s.n.
Santa Clara
Lagunita Stanford Campus
Comment
UC1099858
Potamogeton gramineus
Herbert L. Mason
1948-9-5
13671
Mono
junction of Highway 108 and Highway 395
Comment
UC1099907
Potamogeton gramineus
Herbert L. Mason
1929-10-4
5467
El Dorado
14 mi from Tahoe City (w side of Lake Tahoe above Emerald Bay); Lake Tahoe
Comment
UC1099852
Potamogeton illinoensis
Herbert L. Mason, S. Galen Smith
1948-8-19
8370
Merced
bridge below Snelling; San Joaquin River
Comment
POM313025
Potamogeton nodosus
H. L. Mason
1945-8-24
12683
Lake
East shore, Lower Lake.
Comment
UCD138250
Potamogeton nodosus
Herbert L. Mason
1946-5-18
12770
Mendocino
six miles north of Fort Bragg,
Comment
UC1099815
Potamogeton pectinatus
Herbert L. Mason, S. Galen Smith
1948-7-27
8220
Merced
1/4 mi s of Ingomar
Comment
UC1191228
Potamogeton pectinatus
Herbert L. Mason, Verne Grant
1946-8-28
13091
San Mateo
about 3 mi s of Daly City Road (near Highway 5)
Comment
UC1099833
Potamogeton pectinatus
Herbert L. Mason
1948-9-4
13672
Mono
Junction of Highway 178 and Highway 395
Comment
UCD138286
Potamogeton pusillus
Herbert L. Mason
1948-6-29
13581
Merced
5 miles north of Volta.
Comment
UC1100032
Potamogeton pusillus var. pusillus
Herbert L. Mason
1948-6-29
13581
Merced
5 mi n of Volta; San Joaquin Valley
Comment
UC1100040
Potamogeton pusillus var. pusillus
Herbert L. Mason, S. Galen Smith
1948-8-19
8362
Merced
about 2 mi ne of Merced (on Snelling Highway)
Comment
UC1100037
Potamogeton pusillus var. pusillus
Herbert L. Mason
1947-8-8
13468
Modoc
nw of Alturas (sw margin of Big Sage Reservoir); Big Sage Reservoir
Comment
CAS-BOT-BC242271
Potamogeton richardsonii
Herbert Louis Mason; Verne Grant
1947-7-11
13380
Modoc
Road from Likely to Jess Valley, ca. 1 mi. E of Likely.
Comment
CAS-BOT-BC267233
Potamogeton robbinsii
Herbert L. Mason
1938-7-6
11857
Tuolumne
Yosemite National Park. Swamp Lake, W of Hetch Hetchy
1584
Comment
RSA313010
Potamogeton zosteriformis
H. L. Mason
1947-7-12
13384
Modoc
Irrigation ditch by Jones Lane, off Hwy 395, several miles S of Alturas.
Comment
UC673318
Potentilla amicarum
Herbert L. Mason
1923-8-9
746
Tuolumne
Gaylor Lakes Sierra Nevada, , Gaylor Lakes (Yosemite National Park)
Comment
UC673326
Potentilla amicarum
Herbert L. Mason
1923-8-9
747
Tuolumne
Gaylor Lakes Sierra Nevada, Yosemite National Park, Gaylor Lakes
Comment
UC555624
Potentilla anserina subsp. pacifica
Herbert L. Mason
1927-4-24
3701
San Mateo
mouth of San Gregorio Creek
Comment
CAS-BOT-BC143210
Potentilla breweri
Herbert L. Mason
1923-8-7
723
Tuolumne
Dana Fork of the Tuolumne River, Yosemite National Park, Sierra Nevada
Comment
UC673324
Potentilla breweri
Herbert L. Mason
1923-8-7
723
Tuolumne
0.5 mi from mouth, Dana Fork Tuolumne River Moraine Creek; Sierra Nevada, Yosemite Natl Park, Dana Fork Tuolumne R
Comment
UC673332
Potentilla drummondii
Herbert L. Mason
1923-8-8
729
Tuolumne
0.5 mi from mouth Moraine Creek (Dana Fork Tuolumne River); Sierra Nevada, Yosemite National Park, Dana Fork Tuolumne River
Comment
UC555508
Potentilla fruticosa
Herbert L. Mason
1923-8-9
744
Tuolumne
ridge e second lake (Gaylor Lakes); , ridge e of second lake
Comment
UC555701
Potentilla gracilis var. fastigiata
H. L. Mason
1923-8-21
753
Tuolumne
n base Puppy Dome (Tuolumne Meadows); , n base of Puppy Dome
Comment
CAS-BOT-BC214802
Potentilla rivalis
Herbert Louis Mason
1947-8-13
13518
Modoc
NE side of F reservoir, N of Canby.
Comment
UC570725
Prunella vulgaris var. lanceolata
H. L. Mason
1923-7-16
614
Tuolumne
Hog Ranch Yosemite National Park; Sierra Nevada Mountains, Yosemite National Park
Comment
A346446
Prunus emarginata
H. L. Mason
1933-9-2
7263
Unknown
Silver Lake, Sierra Nevada Mountains
Comment
UC672645
Prunus emarginata
H. L. Mason
1933-9-2
7263
Amador
Silver Lake; Sierra Nevada Mountains, Silver Lake
Comment
A346491
Prunus fasciculata
H. L. Mason
1935-5-1
10007
Unknown
Ridge south of Isabella
Comment
A346505
Prunus fasciculata var. punctata
H. L. Mason
1941-5-28
12403
Unknown
north end of Nipomo mesa
76
Comment
UC555691
Prunus ilicifolia
Herbert L. Mason
1927-6-14
3758
Los Angeles
San Antonio Canyon, San Gabriel Mountians San Antonio Canyon; San Gabriel Mountians, San Antonio Canyon
914
Comment
UC555690
Prunus ilicifolia subsp. lyonii
Herbert L. Mason
1927-9-23
4081
Santa Barbara
back of Prisoner's Harbor (Santa Cruz Island); Santa Cruz Island
Comment
RSA112479
Prunus subcordata
H. L. Mason
1921-3-9
s.n.
San Mateo
Near zoo, shack. At edge of Redwoods. Jasper Ridge.
Comment Read comments Sep 19 2011
GH346738
Prunus virginiana var. demissa
H. L. Mason
1927-6-15
3777
Unknown
San Gabriel Mountains
2590
Comment
UC632864
Pseudobahia heermannii
H. L. Mason
1936-3-20
11002
Tuolumne
3 mi above Tuolumne
Comment
UC632859
Pseudobahia heermannii
H. L. Mason
1936-3-21
11021
Mariposa
3 mi n of Coulterville
Comment
UC632842
Pseudognaphalium biolettii
H. L. Mason
1936-3-6
10989
San Luis Obispo
11 mi w San Luis Obispo; Pecho Hills
Comment
UC672212
Pseudognaphalium biolettii
H. L. Mason
1934-4-1
Monterey
growing along cliffs above the road along the ocean Lucia
Comment
UC581138
Pseudognaphalium californicum
H. L. Mason
1932-8-28
7170
Mendocino
Point Arena
Comment
UC672214
Pseudognaphalium stramineum
H. L. Mason
1933-5-29
7250
Amador
chaparral hills above Ione
Comment
UC672216
Pseudognaphalium stramineum
H. L. Mason
1934-4-1
Monterey
Lucia
Comment
UCD135108
Pseudotsuga macrocarpa
Steve Mason; Helen M. Mason
1993-5-15
24 b
Los Angeles
On Angeles Crest Hwy. 3.5 mi. above Big Tujunga Cnyn. Rd.
1584
Comment
CAS-BOT-BC361774
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1952-7-19
14429
Nevada
Sierra Nevada. Meadow opposite University of California Trout Laboratory. Sage Hen Creek
1981
Comment
UC1178819
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1953-4-5
14507
Colusa
about 3 mi e Maxwell (near bend in road by bench mark)
Comment
CAS-BOT-BC361693
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1952-4-14
14266
Contra Costa
Vernal Pool 3.5 miles south of Byron
Comment
UC1111581
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1935-5-30
2837
Napa
just s Napa State Hospital
Comment
UC1111607
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1938-5-6
11766
Monterey
outside Jolon (at the junction to Indian Road, Santa Lucia Park)
Comment
UC2050284
Psilocarphus chilensis
H. L. Mason
1935-3-30
8238
Kern
plains west of Bakersfield
Comment
UC1178978
Psilocarphus oregonus
Herbert L. Mason
1946-5-31
12801
Lake
1.5 mi w Lower Lake
Comment
UC1060667
Psilocarphus tenellus
Herbert L. Mason
1957-5-11
14696
San Benito
2 to 3 mi e Hernandez
Comment
UC581109
Psilocarphus tenellus
H. L. Mason
1934-4-28
8083
Sonoma
Jensen's Ranch Dorhmann Creek
Comment
UC632837
Psilocarphus tenellus
H. L. Mason
1936-4-12
11080
Calaveras
Comanche, Sierra Nevada foothills Sierra Nevada
Comment
UC558488
Psilotum nudum
Herbert L. Mason
1936-11-16
San Francisco
In pot with cycad, Conservatory, Golden Gate Park, San Francisco
Comment
UC555339
Psorothamnus arborescens var. arborescens
Herbert L. Mason
1926-4-27
3066
San Bernardino
near Victorville; near Victorville
Comment
GH347954
Ptelea crenulata
H. L. Mason
1928-3-31
Unknown
Mt. Diablo
Comment
GH347958
Ptelea crenulata
H. L. Mason
1928-4-1
4270
Unknown
Canyon back of Antioch hills north of Mount Diablo
Comment
GH347960
Ptelea crenulata
H. L. Mason
1928-5-4
4521
Unknown
Granite Canyon southwest of Coloma
Comment
UC571099
Ptelea crenulata
H. L. Mason
1928-5-4
4521
El Dorado
sw of Coloma; Granite Canyon
Comment
UCD113382
Purshia tridentata var. glandulosa
Steven Mason; Helen M. Mason
1993-5-9
41
Los Angeles
Mt. Pinos area, on Lockwood Valley Road, 15.1 miles W of Frazier Mountain Road, 30' in from N side of road.
1676
Comment Read comments Sep 30 2014
UC1199845
Pyrola asarifolia
Herbert L. Mason and L. W. Reinecke
1937-7-22
11613
Tuolumne
Swamp Lakes, south of Miguel Meadows in the hills just west of Hetch Hetchy dam, Yosemite National Park
1584
Comment
GH362892
Pyrola asarifolia subsp. bracteata
H. L. Mason
1925-07-01 - 1925-08-01
2891
Unknown
Mount Elwell
Comment
UC635153
Pyrola minor
H. L. Mason
1923-8-1
683
Tuolumne
Elizabeth Lake Trail, Sierra Nevada Mountains
Comment
UC1081530
Pyrrocoma apargioides
Herbert L. Mason
1936-7-27
11374
Tuolumne
w of Tioga Pass; Sierra Nevada, Yosemite National Park, Gaylor Lakes
3200
Comment
UCD45029
Quercus agrifolia
Herbert L. Mason
1929-10-13
5501 a
San Luis Obispo
2 1/2 mi. north of Cambria, San Luis Obispo County.
Comment
UC1076208
Quercus berberidifolia
H. L. Mason
1926-1-1
2597
Lake
Blue Lakes
Comment Read comments Jun 1 2008
UC1076207
Quercus douglasii
Herbert L. Mason
1929-6-2
5350
Kern
30 mi from Bakersfield; Tehachapi Mountains, Tejon Pass
Comment
UCD45925
Quercus durata var. durata
H. L. Mason
1925-12-30
2557
Mendocino
Hopland-Cloverdale Grade, Mendocino Co.
Comment
UCD45931
Quercus durata var. durata
Herbert L. Mason
1929-10-20
5509
Alameda
Cedar Mountain.
Comment
UC1083146
Quercus lobata
Herbert L. Mason
1924-10-8
1109
San Mateo
between Stanford University and Jasper Ridge
Comment Read comments Sep 19 2011
UC1179011
Quercus lobata
Herbert L. Mason
1947-3-29
13153
Colusa
ca 3 mi ne Colusa (along Butte Creek); Butte Sink, Butte Creek
Comment
UCD54402
Quercus lobata
Herbert L. Mason
1929-10-12
5489
San Luis Obispo
San Luis Obispo Co: 5.2 miles from Atascadero.
Comment
UCD47132
Quercus parvula var. shrevei
Herbert L. Mason
1932-7-31
7126
Santa Cruz
Waddell Creek, Santa Cruz County.
Comment
UCSB1234
Quercus sadleriana
Mason, Herbert
1950-7-16
Siskiyou
Road from Happy Camp, California, to Waldo, Oregon
Comment
UC1076081
Quercus wislizeni
H. L. Mason
1924-10-12
1111
Marin
s slope Mt. Tamalpais
Comment
CAS-BOT-BC362884
Raillardella scaposa
Herbert L. Mason
1938-7-28
12028
Tuolumne
Sierra Nevada, Yosemite National Park. Macomb Ridge east of Tilden Lake
3048
Comment
POM269630
Ranunculus alismifolius var. alismellus
H. L. Mason
1926-5-30
3327
El Dorado
Kit Carson Pass.
2622
Comment
UC1101364
Ranunculus aquatilis var. capillaceus
Herbert L. Mason and Verne Grant
1947-7-11
13370
Modoc
irrigation ditch by Jones' Lane (off Hwy 395, s of Alturas)
Comment
UC1101372
Ranunculus aquatilis var. capillaceus
Herbert L. Mason
1946-7-24
12940
Marin
near Double Point; Lake Ranch
Comment
UCD95857
Ranunculus aquatilis var. diffusus
Herbert L. Mason; Verne Grant
1947-7-11
13370
Modoc
by Jones' Lane, off Highway 395, south of Alturas.
Comment
POM312417
Ranunculus cymbalaria var. saximontanus
H. L. Mason
1947-8-15
13552
Modoc
Mouth of Crane Creek on Willow Ranch, east side of Goose Lake.
Comment
UC1051435
Ranunculus cymbalaria var. saximontanus
Herbert L. Mason
1955-8-14
14661
Modoc
n Rim Rock Valley Reservoir; Drift Fence Reservoir
Comment
UC634983
Ranunculus hebecarpus
H. L. Mason
1926-4-11
2847
Alameda
Cedar Mountain and Rancho Repose Mount Hamilton Range
Comment
POM269863
Ranunculus lobbii
H. L. Mason
1929-4-26
5223
Marin
Near Olema along San Andreas Fault Rift
Comment
UC634965
Ranunculus muricatus
H. L. Mason
1928-5-3
4462
Amador
w Ione; Jackson Creek bridge
Comment
UC635095
Ranunculus occidentalis
H. L. Mason
1923-7-19
615
Tuolumne
Mather
Comment
UC635099
Ranunculus occidentalis
H. L. Mason
1930-6-1
5614
Mendocino
Cloverdale to Fort Bragg (via river); Navarro River
Comment
POM285053
Ranunculus occidentalis var. ultramontanus
H. L. Mason
1952-7-16
14353
Nevada
Sage Hen Creek, 1 mile W of University of California Trout Laboratory.
1982
Comment
UC1191444
Ranunculus sceleratus
Herbert L. Mason
1948-6-29
13578
Merced
5 mi n Volta; San Joaquin Valley
Comment
POM313443
Ranunculus sceleratus
H. L. Mason
1937-6-21
11547
Contra Costa
0.5 mile from the S end of Borden Hwy and 1.5 miles W of Byron.
Comment
UC1178884
Reseda luteola
Herbert L. Mason
1942-9-29
12558
Napa
2 mi n of Calistoga (Napa River); Napa River
Comment
UC672654
Rhamnus californica
Herbert L. Mason
Nov 1931
5886
Monterey
road between Monterey and Carmel
Comment
UC570984
Rhamnus californica subsp. californica
Herbert L. Mason
1926-2-21
2648
Marin
along road from Inverness to Point Reyes
Comment
UC570986
Rhamnus californica subsp. californica
Herbert L. Mason
1928-4-8
4293
Sonoma
2 mi n Fort Ross
Comment
UC912385
Rhamnus californica subsp. californica
Herbert L. Mason
1930-10-25
5742
Monterey
Headwaters of Arroyo Seco Santa Lucia Mountains
Comment
CAS-BOT-BC59912
Rhamnus crocea
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River.
Comment
JROH3556
Rhamnus crocea
H. L. Mason
1921-3-9
s.n.
San Mateo
Jasper Ridge Biological Preserve, Stanford University
Comment
UC570994
Rhamnus crocea
Herbert L. Mason
1923-6-14
416
Santa Barbara
Gaviota Pass
Comment Read comments Apr 2 2007
UC570988
Rhamnus ilicifolia
Herbert L. Mason
1923-6-16
435
Santa Barbara
La Cumbre Peak
Comment
UC570992
Rhamnus ilicifolia
Herbert L. Mason
1929-3-23
5085
Tulare
3 mi above Springville; Middle Tule River
Comment
UC570996
Rhamnus purshiana
Herbert L. Mason
1924-6-19
1071
Plumas
along stream running n into Bear Lake Bear Lake
Comment
UC571001
Rhamnus rubra
Herbert L. Mason
1925-7-16
2172
Tuolumne
Mather
1432
Comment
GH363032
Rhododendron columbianum
H. L. Mason
1924-6-19
1075
Unknown
Along margins of Bear Lakes
Comment
UC571038
Rhododendron macrophyllum
H. L. Mason
June 1930
5632
Mendocino
Fort Bragg
Comment
UC571072
Rhododendron occidentale
H. L. Mason
1925-6-29
2137
Tuolumne
Lake Eleanor
1432
Comment
UC634740
Rhododendron occidentale
H. L. Mason
1925-6-29
2137
Tuolumne
Lake Eleanor
1432
Comment
UC634741
Rhododendron occidentale
H. L. Mason
1923-7-20
625
Tuolumne
Hog Ranch, Middle Fork Hog Ranch; , Middle Fork
Comment
UC635196
Rhus integrifolia
H. L. Mason
1923-6-17
473
Ventura
9 mi n Ventura (Ventura Bluffs); Ventura Bluffs
Comment
UC635192
Rhus ovata
H. L. Mason
1923-6-16
430
Santa Barbara
Rattlesnake Canyon between Santa Barbara and La Combre Peak; Rattlesnake Canyon
Comment
CAS-BOT-BC111865
Rhynchospora alba
Herbert L. Mason
1946-7-4
12880
Sonoma
Pitkin Marsh; between Santa Rosa and Forestville.
Comment
UC570848
Ribes amarum
Herbert L. Mason
1923-6-16
457
Santa Barbara
vicinity Santa Barbara (La Combre Peak by way of La Combre Trail and Rattlesnake Canyon); La Combre Peak
Comment
UC570813
Ribes amarum
Herbert L. Mason
1929-3-3
5038
Monterey
4 mi e Jamesburg Post Office; Santa Lucia Mts.
Comment
CAS-BOT-BC173047
Ribes divaricatum var. pubiflorum
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
CAS-BOT-BC168991
Ribes divaricatum var. pubiflorum
H. L. Mason
1921-3-9
s.n.
Santa Clara
San Francisquito Creek, foot of Jasper Ridge
Comment
UC1081574
Ribes lasianthum
Herbert L. Mason
1936-7-10
11186
Tuolumne
se White Wolf (Lukens Lake); Sierra Nevada, Yosemite National Park
2560
Comment
UC570817
Ribes malvaceum
H. L. Mason
1931-3-22
5796
Lake
Mount Konocti
Comment
UC1191514
Ribes menziesii
Herbert L. Mason
1946-7-24
12920
Marin
2.8 mi n Lake Ranch (first lake s of Bear Valley)
Comment
GH380490
Ribes menziesii var. leptosmum
H. L. Mason
1926-2-21
2661
Unknown
Point Reyes
Comment
UC570979
Ribes montigenum
H. L. Mason
1922-7-26
333
Tuolumne
Porcupine Flat Sierra Nevada Mountains, Yosemite National Park
2133
Comment
UC570970
Ribes roezlii
Herbert L. Mason
1925-7-15
2159
Tuolumne
Mather
Comment
UC570971
Ribes roezlii
Herbert L. Mason
1925-7-15
2158
Tuolumne
Mather
Comment
GH380896
Ribes speciosum
H. L. Mason
1929-3-1
5018
Unknown
Twenty-five miles up Carmel River on the Jamesburg to Arroyo Seco Road
Comment
UC1060662
Rigiopappus leptocladus
Herbert L. Mason
1957-5-11
14731
San Benito
Two-three miles e Hernandez
Comment
UC566727
Rigiopappus leptocladus
H. L. Mason
1928-5-6
4566
Alameda
Cedar Mountain Mount Hamilton Range
Comment
UC965558
Rorippa curvisiliqua
Herbert L. Mason
1952-7-10
14315
Nevada
in meadow one mi w University of California Trout Laboratory (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
UC555674
Rosa californica
H. L. Mason
1929-10-12
5498
San Luis Obispo
10 mi w Atascadero
Comment
UC555647
Rosa gymnocarpa
Herbert L. Mason
1924-11-23
1161
Contra Costa
Cashion Creek Las Trampas Ridge
Comment
UC555638
Rosa pinetorum
Herbert L. Mason
1927-10-4
4128
Santa Cruz
mouth of Waddell Creek Ano Nuevo Pt.
Comment
UC555667
Rosa woodsii var. glabrata
Herbert L. Mason
1926-4-28
3090
San Bernardino
Box S Springs Mojave Desert
Comment
UC1191554
Rotala indica
Herbert L. Mason
1946-9-27
13137
Butte
2 mi w Biggs; Butte Sink
Comment
SBBG30032
Rotala ramosior
H. L. Mason
1936-7-15
11256
Tuolumne
0.5 mi W of Mather
1371
Comment
UC555681
Rubus laciniatus
H. L. Mason
1925-12-12
Alameda
San Leandro Canyon Oakland Hills, San Leandro Canyon
Comment
CAS-BOT-BC147189
Rubus parviflorus
H. L. Mason
1921-5-14
s.n.
Alameda
[Haywards] Hayward
Comment
CAS-BOT-BC147257
Rubus parviflorus
H. L. Mason
1917-4-28
s.n.
Marin
Mt. Tamalpais
Comment
UC1076531
Rudbeckia californica
Herbert L. Mason
1937-7-21
11555
Tuolumne
w of Hetch Hetchy; Sierra Nevada, Yosemite National Park, Miguel Meadow
1584
Comment
UC1191270
Rumex maritimus
Herbert L. Mason
1947-8-13
13517
Modoc
n of Canby (ne side of F reservoir)
Comment
UC1191274
Rumex maritimus
H. L. Mason
4981
Monterey
1 mi below Salinas; Salinas River
Comment
CAS-BOT-BC433866
Rumex salicifolius
Herbert L. Mason
1945-8-16
12652
Solano
Grizzly Island, near Suisun Bay
Comment
UC1101193
Rumex salicifolius var. crassus
Herbert L. Mason
1927-10-4
4131
Santa Cruz
Mouth of Waddell Creek Ano Nuevo Point
Comment
UC641783
Rumex salicifolius var. denticulatus
H. L. Mason
1936-7-31
11476
Mono
near Saddlebag Lake; Sierra Nevada, Tioga Crest
3078
Comment
UC1101209
Rumex salicifolius var. lacustris
Herbert L. Mason and Verne Grant
1947-7-10
13336
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
UC1101220
Rumex salicifolius var. lacustris
Herbert L. Mason
1947-8-15
13556
Modoc
e of Goose Lake (on Willow Ranch); Mouth of Crane Creek
Comment
UC1101231
Rumex salicifolius var. salicifolius
Herbert L. Mason
1945-8-16
12652
Solano
near Suisun Bay; Grizzly Island
Comment
UC1191287
Rumex salicifolius var. salicifolius
Herbert L. Mason
1932-7-31
7135
Santa Cruz
Mouth of Waddell Creek
Comment
UC1191281
Rumex salicifolius var. transitorius
Herbert L. Mason and Verne Grant
1946-8-28
13080
San Mateo
n of San Francisco county prison
Comment
UC1191282
Rumex salicifolius var. transitorius
Herbert L. Mason and Verne Grant
1947-5-14
13233
Solano
Cordelia Creek Suisun Marsh
Comment
UCD138310
Ruppia cirrhosa
Herbert L. Mason
1923-10-6
770
Solano
Suisun Marsh.
Comment
UC1100031
Ruppia maritima
Herbert L. Mason
1945-7-20
Monterey
Elkhorn Slough
Comment
CAS-BOT-BC454144
Ruppia maritima
Herbert L. Mason
1945-7-20
s.n.
Monterey
Elkhorn Slough
Comment
UC1051438
Sagittaria cuneata
Herbert L. Mason
1955-8-13
14647 a
Lassen
Willow Creek Valley
Comment
UC935740
Sagittaria cuneata
Herbert L. Mason
1945-6-29
12623
Lake
Boggs Lake at base Mount Hanna; Boggs Lake at base of Mount Hanna
Comment
UC935754
Sagittaria cuneata
Herbert L. Mason
1945-8-24
12675
Lake
e shore Lower Lake; e shore Lower Lake
Comment
UC935797
Sagittaria cuneata
Herbert L. Mason
1948-7-18
13607
Siskiyou
Grass Lake
Comment
POM313041
Sagittaria cuneata
H. L. Mason
1933-9-2
7285
Alpine
Silver Lake, Sierra Nevada.
Comment
CAS-BOT-BC445727
Sagittaria latifolia
Herbert L. Mason; Verne Grant
1946-8-14
13040
Butte
Butte Sink
Comment
UC935752
Sagittaria latifolia
Herbert L. Mason and S. Galen Smith
1948-8-19
8379
Merced
1 mi w Snelling
Comment
UC935769
Sagittaria latifolia
Herbert L. Mason and S. Galen Smith
1948-8-9
8299
Merced
1 mi w Los Banos; w of Los Banos
Comment
UCD138019
Sagittaria longiloba
Herbert L. Mason; S. Galen Smith
1948-8-10
8313
Fresno
adjacent to Mendota canal, southwest of Firebaugh.
Comment
UC935749
Sagittaria montevidensis subsp. calycina
Herbert L. Mason and Verne Grant
1946-8-7
12981
Colusa
Butte Sink; eight mi n of Colusa
Comment
UCD138038
Sagittaria montevidensis subsp. calycina
Herbert L. Mason; S. Galen Smith
1948-8-11
8322
Merced
Crane Ranch, south of junction of Merced and San Joaquin Rivers.
Comment
CAS-BOT-BC267086
Sagittaria sanfordii
Herbert L. Mason
1946-8-8
13001
Butte
Butte Sink. West Gridley road, 1 mile W of Gridley - Pennington highway
Comment
UCD138071
Sagittaria sanfordii
Herbert L. Mason; Verne Grant
1946-8-8
13001
Butte
West Gridley road one mile west of Gridley - Pennington Highway.
Comment
A401598
Salazaria mexicana
H. L. Mason
1926-4-26
2981
Unknown
Vincent to Palmdale
Comment
UC1191409
Salicornia europaea
Herbert L. Mason and Malcolm A. Nobs
1948-12-11
713
San Mateo
Highway 101, near shore of bay, at Whipple Avenue intersection, Redwood City Redwood City
Comment
UCD99148
Salicornia pacifica
H. L. Mason; Malcolm A. Nobs
1948-12-11
714
Santa Clara
at north base of Pacheco Pass.
Comment
UC1191406
Salicornia virginica
Herbert L. Mason and Malcolm A. Nobs
1948-12-11
714
Merced
n base Pacheco Pass
Comment Read comments Sep 12 2008
GH382384
Salix arctica
H. L. Mason
1936-7-23
11300
Unknown
alpine slopes Mount Conness, Sierra Nevada
Comment
UC1179058
Salix exigua var. hindsiana
Herbert L. Mason
1947-3-29
13159
Colusa
ca. 3 mi n.e. Colusa (Butte Sink, along Butte Creek)
Comment
UC634548
Salix exigua var. hindsiana
H. L. Mason
1926-3-14
2719
Napa
along stream in grove Mt. St. Helena
Comment
UC965627
Salix geyeriana
Herbert L. Mason
1952-7-18
14405
Nevada
upstream from U. C. Trout Laboratory (Sage Hen Creek); Sierra Nevada
1981
Comment
UC634544
Salix laevigata
H. L. Mason
1928-3-10
4171
Riverside
Snow Creek Colorado Desert, White Water River Valley, Snow Creek
Comment
UC634550
Salix melanopsis
H. L. Mason
1923-6-23
552
Monterey
Carmel R.
Comment
UC641703
Salix petrophila
H. L. Mason
1936-7-23
11300
Tuolumne
Mt. Conness alpine slopes Mt. Conness; Sierra Nevada
Comment
UC634542
Salix scouleriana
H. L. Mason
November 1931
5878 a
Monterey
rd. between Monterey and Carmel
Comment
UC909119
Saltugilia splendens subsp. splendens
Herbert L. Mason
1926-4-27
3037
Los Angeles
Rock Creek San Gabriel Mts., Rock Creek
Comment
UC581136
Salvia dorrii var. pilosa
H. L. Mason
1934-3-28
8000
Kern
near Onyx; Kern River Canyon
Comment
UC632848
Salvia leucophylla
H. L. Mason
1936-3-7
10998
Santa Barbara
Point Sal
Comment
CAS-BOT-BC221097
Salvia sonomensis
Herbert L. Mason
1932-4-24
s.n.
Amador
Three mi. so. of Ione
Comment
UCLA69735
Salvia sonomensis
H. L. Mason
1930-10-25
5748
Monterey
Headwaters of Arroyo Seco; Santa Lucia Mountains
Comment
UCLA69737
Salvia sonomensis
H. L. Mason
1929-4-29
5252
Lake
between Kelseyville and Lower Lake
Comment
UC1076398
Sambucus mexicana
Herbert L. Mason
1925-6-27
2128
Tuolumne
Mather
Comment
UC912449
Sambucus nigra subsp. caerulea
Herbert L. Mason
1923-6-16
461
Santa Barbara
La Cumbre Peak
Comment
UC912452
Sambucus racemosa var. racemosa
Herbert L. Mason
1924-11-16
1156
Marin
lowlands back of dunes; Willow Camp
Comment
UC635705
Samolus parviflorus
H. L. Mason
September 1930
5904
Monterey
Elkhorn Slough between Watsonville and Castroville; Elkhorn Slough
Comment
UC566879
Sanicula bipinnatifida
H. L. Mason
1926-4-30
3139
San Diego
Henshaw Dam
Comment
UC566882
Sanicula bipinnatifida
H. L. Mason
1926-4-10
2811 a
Alameda
Mount Hamilton Range, Cedar Mountain via Arroyo Mocho Cedar Mountain; Mount Hamilton Range, Cedar Mountain
Comment
UC566884
Sanicula bipinnatifida
H. L. Mason
1926-3-17
2743 a
Alameda
Berkeley Hills, Strawberry Canyon Strawberry Canyon; Berkeley Hills, Strawberry Canyon
Comment
UC566825
Sanicula graveolens
H. L. Mason
1930-7-1
5702
Calaveras
near Hermit Springs (Sierra Nevada Mountains, Blue Creek); Sierra Nevada Mountains, Blue Creek
Comment
UC753535
Sanicula graveolens
Herbert L. Mason
1946-6-8
12860
Santa Barbara
San Rafael Range, Big Pine Mountains Big Pine Mountains; San Rafael Range, Big Pine Mountains
1981
Comment
JEPS948
Sanicula tuberosa
H. L. Mason
1926-5-31
3357
Calaveras
1 1/2 mi w of Calaveras Grove (1 1/2 mi w of Calaveras Big Trees)
Comment
UC566831
Sanicula tuberosa
H. L. Mason
1928-5-4
4520
El Dorado
Rose Springs (Eggar's) Rose Springs
Comment
UC566839
Sanicula tuberosa
Herbert L. Mason
1926-5-30
3325
El Dorado
along road from Tahoe to Kit Carson Pass Kit Carson Pass
1889
Comment
UC566888
Sanicula tuberosa
Herbert L. Mason
1926-5-29
3293
Nevada
3 mi w of Cisco (Crystal Lake); Crystal Lake
1767
Comment
JEPS47521
Saxifraga integrifolia
Herbert L. Mason
1926-3-21
2767
Lake
about 2 mi s of Middletown (near St. Helena Creek)
Comment
UC635130
Saxifraga integrifolia
H. L. Mason
1931-3-7
5808
Sonoma
12 mi w of Santa Rosa (Vine Hill School); Vine Hill School
Comment
UC642736
Saxifraga odontoloma
H. L. Mason
1936-7-31
11475
Mono
Tioga Crest near Saddlebag Lake (Tioga Pass region); Sierra Nevada, , Tioga Crest
3200
Comment
UC1081521
Saxifraga oregana
Herbert L. Mason
1936-7-12
11236
Mariposa
Glacier Point, Peregoy Meadow; Sierra Nevada, Yosemite National Park, Glacier Point, Perego
2255
Comment
UC632851
Schoenoplectus acutus var. occidentalis
H. L. Mason
1938-8-1
12064
Tuolumne
Rancheria Mountain Trail Yosemite National Park, Tiltill Valley (Tiltill Valley, Yosemite National Park)
1676
Comment
CAS-BOT-BC245130
Schoenoplectus americanus
Herbert Louis Mason
1947-8-11
13499
Modoc
Hwy 81, W margin of Lower Lake, near boundary with Lassen Co.
Comment
POM313085
Schoenoplectus californicus
H. L. Mason, Verne Grant
1946-7-5
12904
Solano
In Lake Chabot water reservoir just north of Vallejo.
Comment
POM313045
Schoenoplectus fluviatilis
H. L. Mason
1945-8-24
12673
Lake
East shore, Lower Lake.
Comment
UC1100679
Scirpus acutus var. occidentalis
Herbert L. Mason, Verne Grant
1946-7-5
12906
Solano
in water in Lake Chabot water reservoir just n Vallejo; Lake Chabot water reservoir, n of Vallejo
Comment
UC1100871
Scirpus americanus
Herbert L. Mason
1946-6-9
12869
San Luis Obispo
Dune Lakes between Oceano and mouth Santa Maria River; Dune Lakes, between Oceano and mouth Santa Maria River
Comment
UC1100872
Scirpus americanus
Herbert L. Mason, Verne Grant
1946-9-5
13114
Colusa
Road to Lake County 1.6 mi w Williams; w of Williams
Comment
UC1100790
Scirpus californicus
Herbert L. Mason, S. Galen Smith
1948-8-9
8272
Santa Clara
5 mi e of Gilroy (at w base of Pacheco Pass); Pacheco Pass
Comment
UC1100794
Scirpus californicus
Herbert L. Mason, Verne Grant
1947-6-26
13268
Solano
Suisun Marsh Cordelia Slough, Suisun Marsh
Comment
UC1100940
Scirpus californicus
Herbert L. Mason
1946-6-9
12868
San Luis Obispo
betwen Oceano and mouth Santa Maria River (Dune Lakes); , between Oceano and mouth Santa Maria River
Comment
UC1102979
Scirpus cernuus var. californicus
Herbert L. Mason
1958-8-9
14863
Tuolumne
w Hetch Hetchy Dam (Swamp Lake, Yosemite National Park); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1100859
Scirpus maritimus
Herbert L. Mason
1945-8-16
12660 a
Solano
near Suisun Bay; Grizzly Island, near Suisun Bay
Comment
UC1100860
Scirpus maritimus
Herbert L. Mason
1945-8-16
12660
Solano
near Suisun Bay; Grizzly Island, near Suisun Bay
Comment
UC1100913
Scirpus maritimus
Herbert L. Mason
1948-9-4
13650
Mono
Rush Creek , Rush Creek (Mono Lake)
Comment
UC1100919
Scirpus maritimus
Herbert L. Mason, Verne Grant
1946-8-15
13046
Butte
Greylodge Game Refuge near caretaker's house; Butte Sink, Greylodge Game Refuge
Comment
UC1100920
Scirpus maritimus
Herbert L. Mason, Verne Grant
1946-8-15
13046
Butte
Greylodge Game Refuge near caretaker's house (Butte Sink); , Greylodge Game Refuge
Comment
UC1100924
Scirpus maritimus
Herbert L. Mason, Verne Grant
1946-8-6
12964
Colusa
four mi s Colusa (w side Sacramento River, pond on Colusa-Marysville Highway); w side Sacramento River, s of Colusa
Comment
UC1100838
Scirpus microcarpus
Herbert L. Mason, Verne Grant
1946-8-28
13093
San Mateo
on Highway 5 one mi w of San Bruno between Santa Cruz and Daly City; w of San Bruno
Comment
UC1100837
Scirpus microcarpus
Herbert L. Mason, Verne Grant
1947-7-13
13346
Modoc
Joseph Creek on Highway 395 n Davis Creek (e side Goose Lake); , Joseph Creek, n of Davis Creek
Comment
UC1100884
Scirpus nevadensis
Herbert L. Mason
1948-9-4
13662
Mono
Rush Creek Mono Lake, Rush Creek
Comment
UC1100803
Scirpus pungens
Herbert L. Mason
1948-9-4
13668
Mono
Rush Creek , Rush Creek (Mono Lake)
Comment
UC1100806
Scirpus pungens
Herbert L. Mason
1948-9-4
13663
Mono
Rush Creek , Rush Creek (Mono Lake)
Comment
UC1100809
Scirpus pungens
Herbert L. Mason
1947-8-15
13544
Modoc
e side Goose Lake (mouth of Crane Creek, on Willow Ranch)
Comment
UC1212208
Sclerolinon digynum
Herbert L. Mason
1939-7-11
12119
Tuolumne
0.5 mi below Swamp Lake (nw part of Yosemite National Park); Yosemite National Park
1554
Comment
POM313136
Scribneria bolanderi
H. L. Mason, Malcom A. Nobs, S. Galen Smith
1949-5-29
759
Lassen
On Great Northern Railroad , Highway 299, Nubeiber.
Comment
UC565461
Scutellaria californica
Herbert L. Mason
1926-5-26
3274
Placer
5 mi above Auburn
Comment
UC1076034
Scutellaria siphocampyloides
Herbert L. Mason
1947-5-15
14752
Shasta
1 mi s of Boulder Creek (between La Moine and Dunsmuir)
Comment
UC1111605
Scutellaria tuberosa
Herbert L. Mason
1938-5-10
11811
Tulare
sw of Badger (Auckland Ranch); General Grant National Park, Auckland Ranch
Comment
UC1713661
Scutellaria tuberosa
Herbert L. Mason
1931-3-13
5815
Alameda
Lake Chabot
Comment
UC565458
Scutellaria tuberosa
Herbert L. Mason
1925-2-16
1251
Alameda
ridge n of Mills College
Comment
CAS-BOT-BC417828
Sedella pentandra
Herbert L. Mason
1940-5-5
12278
Merced
North Twin Peak (Diablo Range), N Fork of Los Banos Creek, Inner South Coast Range
Comment
CAS-BOT-BC417829
Sedella pentandra
H. L. Mason
1935-5-9
s.n.
Santa Clara
Tributary to Sulphur Springs Creek, San Antonio Valley, Mt. Hamilton Range
609
Comment
SBBG30053
Sedella pumila
H. L. Mason
1941-4-6
12409
Butte
3 mi S of Chico near jct of rd to Paradise
91
Comment
SBBG70348
Sedella pumila
H. L. Mason
1941-4-6
12409
Butte
3 mi S of Chico near jct of rd to Paradise
91
Comment
GH376752
Sedum rosea subsp. integrifolium
H. L. Mason
1926-5-30
3313 a
Unknown
Hill slope back of Emerald Bay, above falls
Comment
CAS-BOT-BC59062
Sedum spathulifolium
H. L. Mason
1921-7-1
s.n.
San Mateo
Pescadero Creek
Comment
UC1076450
Selaginella bigelovii
Herbert L. Mason
1926-4-26
2941
Los Angeles
upper rd. Pacoima Wash; San Gabriel Mts.
Comment
UC1076336
Selaginella wallacei
Herbert L. Mason
1925-12-31
2565
Lake
Bartlett Mt. road
Comment
UC641693
Selaginella watsonii
H. L. Mason
1936-7-24
11354
Tuolumne
White Mt.; Sierra Nevada, Mt. Conness Range
Comment
UC566627
Senecio aronicoides
Herbert L. Mason
1924-4-20
900
Alameda
Berkeley Hills Berkeley, Berkeley Hills
Comment
UC1093654
Senecio californicus
Herbert L. Mason
1957-5-11
14740
San Benito
4-5 mi e Hernandez; entrance to Clear Creek Canyon
Comment
GH427714
Senecio flaccidus var. monoensis
H. L. Mason
1925-4-25
3088
Unknown
Box S. Springs
Comment
UC714453
Senecio fremontii var. occidentalis
H. L. Mason
1936-7-30
11447
Tuolumne
Shepherds Crest Sierra Nevada, Mount Conness Range
Comment
UC566633
Senecio glomeratus
H. L. Mason
1928-7-10
4884
Sonoma
Jenner
Comment
UC1081541
Senecio hydrophilus
Herbert L. Mason
1936-8-1
11495
Mono
Mono Lake Sierra Nevada, Mono Lake
1981
Comment
UC566637
Senecio jacobaea
H. L. Mason
1928-8-26
4934
Mendocino
Pudding Creek slough Pudding Creek
Comment
UC1076532
Sericocarpus oregonensis subsp. californicus
Herbert L. Mason
1937-7-21
11556
Tuolumne
west of, Miguel Meadow Hetch Hetchy; Yosemite National Park, Miguel Meadow
1584
Comment
UC1100567
Setaria parviflora
Herbert L. Mason and S. Galen Smith
1948-7-30
8262
Stanislaus
ca. 7 mi. s. Modesto (on Crow's Landing Rd.)
Comment
CAS-BOT-BC243639
Setaria pumila
Herbert L. Mason; Verne Grant
1946-9-12
13127
San Joaquin
Borden Highway near Dagget Road, Roberts Island
Comment
RSA313135
Setaria pumila
H. L. Mason
1945-9-18
12712
Sutter
Along drainage ditches, Pennington Toad between Live Oak and Pennington
Comment
UC1191168
Sidalcea glaucescens
Herbert L. Mason
1926-5-31
3355
Calaveras
1.2 mi sw Big Trees (on old road)
Comment
GH420707
Sidalcea hartwegii
H. L. Mason
1932-4-24
Unknown
Near base of Pilot Hill about 11 mi. E. of Folsom
Comment
POM199432
Sidalcea hartwegii
H. L. Mason
1932-4-24
s.n.
Sacramento
Near base of Pilot Hill about 11 miles E of Folsom
Comment
UC1191165
Sidalcea hirsuta
Herbert L. Mason
1928-5-3
4451
San Joaquin
4 mi n Clements; n of Clements
Comment
UC965541
Sidalcea oregana subsp. spicata
Herbert L. Mason
1952-7-11
14336
Nevada
in meadow one mi w University of California Trout Laboratory (Sage Hen Creek); Sierra Nevada, w of University of California Trout Laborator
1981
Comment
SEINET187227
Silene
Herbert L. Mason
1923-6-18
499
Ventura
Timbes Canyon Topa Topa Mt.
Comment Read comments Oct 18 2018
UC640587
Silene bridgesii
H. L. Mason
1925-7-10
2154
Tuolumne
Hog Ranch Sierra Nevada Mountains, Yosemite National Park (Mather, Yosemite National Park)
Comment
CAS-BOT-BC386879
Silene gallica
H. L. Mason
1921-5-1
s.n.
Alameda
Hills back of Haywards.
Comment
UC936207
Silene sargentii
H. L. Mason
1936-7-28
11423
Mono
Mount Dana Plateau
Comment
UC592177
Sium suave
H. L. Mason
1929-9-21
5444
San Joaquin
Holt
Comment
POM312585
Solanum americanum
H. L. Mason, Verne Grant
1947-6-26
13259
Solano
Cordelia Slough, Suisun Marsh.
Comment
UC1191782
Solanum americanum
Herbert L. Mason, Verne Grant
1947-6-26
13259
Solano
Cordelia Slough, Suisun Marsh Cordelia Slough; , Suisun Marsh
Comment
UC570694
Solanum americanum
H. L. Mason
1929-11-27
4150
Santa Barbara
Carpenteria
Comment
UC558471
Solanum mauritianum
Herbert L. Mason
1936-8-28
Alameda
Court of Life Sciences Building University of California, Berkeley.
Comment
UC570682
Solanum umbelliferum
Herbert L. Mason
1923-6-18
500
Ventura
Topa Topa Mountain, Timber Canyon Timber Canyon; Topa Topa Mountain, Timber Canyon
Comment
UC921145
Solanum umbelliferum
Herbert L. Mason
1936-5-15
11111
Mariposa
3 mi above Coulterville
Comment
UC672228
Solidago spathulata
H. L. Mason
1934-10-19
1117
San Francisco
San Francisco , Merced Lake (Merced Lake)
Comment
CAS-BOT-BC54285
Solidago spectabilis
Herbert Louis Mason
1947-8-9
13459
Modoc
Ingalls Swamp, N of Big Sage Reservoir.
Comment
UC912199
Soliva sessilis
Herbert L. Mason
1932-4-25
6987
Amador
hills above Ione
Comment
CAS-BOT-BC365876
Soliva sessilis
H. L. Mason
1928-4-13
4315
Marin
Hills north of San Rafael
Comment
UCD92752
Sorghum halepense
H. L. Mason
1945-9-19
12723
Colusa
1 mile N of Colusa. Below causeway over Butte Sink spillway, E bank of Sacramento River.
Comment
POM312964
Sparganium angustifolium
H. L. Mason
1945-9-7
12689
Mono
Pond below Tioga Lake.
Comment
UC1099802
Sparganium erectum subsp. stoloniferum
Herbert L. Mason and Verne Grant
1946-9-12
13124
San Joaquin
about 6 mi s Stockton (on Borden Highway)
Comment Read comments Sep 25 2008
UC1099805
Sparganium erectum subsp. stoloniferum
Herbert L. Mason
1945-8-17
12662
Solano
near Rio Vista (bank of Sacramento River); Sacramento River
Comment Read comments Sep 25 2008
SEINET3825672
Sparganium eurycarpum
Herbert L. Mason, Verne Grant
1946-8-14
13016
Butte
Canal near big pond on Sacramento Outing Club Butte Sink
Comment
UC1102973
Sparganium natans
Herbert L. Mason
1958-8-9
14858
Tuolumne
w side Hetch Hetchy Dam (Swamp Lake); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
CAS-BOT-BC390971
Spergularia marina
Herbert L. Mason; Malcom A. Nobs
1949-4-27
730
Solano
Suisun State Game Refuge
Comment
UC673574
Spiranthes stellata
H. L. Mason
1923-7-25
649
Tuolumne
Mather Spring Sierra Nevada Mountains, Yosemite National Park, Hog Ranch
Comment
CAS-BOT-BC534890
Spirodela polyrhiza
Herbert L. Mason
1953-7-8
14561
Plumas
Four miles northwest of Loyalton
Comment
CAS-BOT-BC534892
Spirodela polyrhiza
Herbert L. Mason
1953-7-8
14561
Plumas
Four miles northwest of Loyalton
Comment
CAS-BOT-BC534893
Spirodela polyrhiza
Herbert L. Mason
1955-6-8
14630
Shasta
In a marsh at the bridge, west edge of Fall River Mill
Comment
UC1191918
Stachys ajugoides var. ajugoides
Herbert L. Mason, S. Galen Smith
1948-8-9
8275
Santa Clara
about 8 mi e Gilroy
Comment
UC635184
Stachys ajugoides var. rigida
Herbert L. Mason
1927-4-24
3700
San Mateo
mouth San Gregorio Creek
Comment
UC635179
Stachys albens
H. L. Mason
1925-7-16
2169
Tuolumne
near Mather (Hog Ranch)
Comment
UCLA71370
Stachys bullata
Herbert L. Mason
1927-4-24
3700
San Mateo
mouth San Gregorio Creek
Comment
UC635186
Stachys chamissonis
H. L. Mason
June 1930
5652
Sonoma
mouth Gualala River
Comment
UC635699
Stachys chamissonis
H. L. Mason
1924-10-19
1122
San Francisco
Merced Lake San Francisco
Comment
UC936170
Stellaria calycantha
Herbert L. Mason
1936-7-28
11419
Mono
Mount Dana Plateau
Comment
UC965633
Stellaria longipes var. longipes
Herbert L. Mason
1952-7-16
14367
Nevada
1 mi w Univ. of Calif. Trout Laboratory (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
YM-YOSE65590
Stenophyllus capillaris
H. L. Mason
1938-7-13
11946
Mariposa
BASE OF EL CAPITAN. YOSEMITE VALLEY
1226
Comment
JEPS36835
Stephanomeria cichoriacea
Herbert L. Mason
1927-9-23
4082
Santa Barbara
canyon back of Prisoners Harbor; Santa Cruz Island
Comment
UC565505
Stephanomeria cichoriacea
H. L. Mason
1927-9-23
4082
Santa Barbara
canyon back of Prisoner's Harbor; Santa Cruz Island
Comment
UC565522
Stephanomeria virgata subsp. pleurocarpa
Herbert L. Mason
1926-7-27
2176
Tuolumne
Mather
Comment
UC570782
Stillingia spinulosa
H. L. Mason
1928-3-10
4184
Riverside
Whitewater River
Comment
GH379988
Streptanthus breweri
H. L. Mason
1952-6-19
14300
Unknown
between Fouts Springs and Red Bridge Public Camp, Mendocino National Forest
Comment
UC1178913
Streptanthus breweri var. breweri
Herbert L. Mason
1940-5-22
12308 a
Lake
ridge 3 mi e Middletown
Comment
CAS-BOT-BC87112
Streptanthus glandulosus subsp. glandulosus
H. L. Mason
1938-5-1
11747
Lake
Bartlett Mountain. 4 miles from Lucerne.
Comment
UC592151
Streptanthus hispidus
H. L. Mason
1929-3-29
5120
Contra Costa
Mount Diablo
762
Comment
GH422251
Streptanthus polygaloides
H. L. Mason
1959-5-24
14899
Unknown
in canyon of north fork of the Yuba River, exactly opposite Goodyears Bar (above north bank of river)
853
Comment
POM257207
Streptanthus polygaloides
H. L. Mason
11118
Mariposa
Summit of road between Coulterville and Bagby.
701
Comment
UC629717
Streptanthus polygaloides
H. L. Mason
May 15 1936-May 16 1936
11118
Mariposa
summit of road between Coulterville and Bagby
701
Comment
UC592144
Streptanthus tortuosus
Herbert L. Mason
1925-7-9
2151
Tuolumne
Mather
1432
Comment
UC592159
Streptanthus tortuosus var. orbiculatus
Herbert L. Mason
1926-5-30
3322
El Dorado
near road to Fallen Leaf Lake; Lake Tahoe
Comment
CAS-BOT-BC376019
Stylocline gnaphaloides
H. L. Mason
1933-4-22
7214
Monterey
Pajaro Hills
Comment
UC581147
Stylocline gnaphaloides
H. L. Mason
1935-3-31
8255
Fresno
near Kett Station (e of Fresno)
Comment
UC581172
Stylocline gnaphaloides
H. L. Mason
1935-3-31
8250
San Luis Obispo
Cholame Valley
Comment
UC581176
Stylocline intertexta
H. L. Mason
1935-3-29
8233
San Bernardino
w side of lake six mi s Trona; Mojave Desert, Searles Lake
Comment
SD46105
Stylocline psilocarphoides
Herbert L. Mason
1952-4-7
14208
Riverside
Palm Canyon, Palm Springs.
Comment
UC581180
Stylocline psilocarphoides
H. L. Mason
1935-3-29
8194
San Bernardino
se Stoddard's Well; Mojave Desert, Taylor Springs
Comment
UC581181
Stylocline psilocarphoides
H. L. Mason
1935-3-29
8214
San Bernardino
between Johannesburg and Searles Lake; Mojave Desert
Comment
UC635477
Stylomecon heterophylla
H. L. Mason
1928-4-29
4442
Contra Costa
s slope Mount Diablo; s slope of Mount Diablo, Sycamore Canyon
Comment
UC566951
Styrax officinalis var. redivivus
H. L. Mason
1926-4-30
3138
San Diego
San Luis Rey River four mi below Henshaw Dam; San Luis Rey River, below Henshaw Dam
Comment
CAS-BOT-BC64527
Styrax redivivus
H. L. Mason
1926-4-30
3138
San Diego
San Luis Rey River, 4 mi. below Henshaw Dam.
Comment
GH384820
Styrax redivivus
H. L. Mason
1923-6-16
456
Unknown
La Combre Peak, Santa Barbara, by way of Rattlesnake Canyon and La Combre Trail
Comment
GH384821
Styrax redivivus
H. L. Mason
1931-5-9
5876
Unknown
Pitt River
Comment
UC1051440
Suaeda calceoliformis
Herbert L. Mason
1955-8-14
14649
Modoc
s end Goose Lake
Comment
UC1076414
Symphoricarpos albus var. laevigatus
Herbert L. Mason
1924-11-23
1158
Contra Costa
Cashion
Comment
RSA55143
Symphoricarpos mollis
S. C. Mason
1910-8-29
s.n.
Santa Barbara
San Marcoss Pass.
Comment
SEINET8061688
Symphoricarpos mollis
S. C. Mason
1910-8-31
s.n.
Santa Barbara
N. Of Gaviota Pass.
Comment
UC1191852
Symphoricarpos rotundifolius var. rotundifolius
Herbert L. Mason
1948-7-18
13619
Modoc
Cedar Pass; Warner Mountains
Comment
UC1192069
Symphyotrichum bracteolatum
Herbert L. Mason
1947-8-11
13494
Modoc
on Highway 81, w margin of Lower Lake, near boundary betwn Lassen and Modoc Co. Lower Lake
Comment
UC1195915
Symphyotrichum spathulatum
Herbert L. Mason
1958-8-9
14896
Tuolumne
w of, (meadow at Swamp Lake) Hetch Hetchy Dam; Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1192206
Symphyotrichum spathulatum
Herbert L. Mason
1947-8-8
13454
Modoc
nw of, (Ingalls Swamp, n of big Sage Reservoir) Alturas; Ingalls Sweamp
Comment
UC1191127
Tamarix ramosissima
Herbert L. Mason
1952-4-9
14227
San Bernardino
25 mi s Needles (on road from Blythe to Needles)
Comment
UCD101705
Tamarix ramosissima
Herbert L. Mason
1952-4-9
14226
San Bernardino
Twenty-five miles south of Needles on road from Blythe to Needles.
Comment
UC1191747
Taraxia tanacetifolia
Herbert L. Mason
1947-8-13
13523
Modoc
n Canby (ne side of reservoir); F Reservoir
Comment
UC1191748
Taraxia tanacetifolia
Herbert L. Mason and Verne Grant
1947-7-10
13327
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
UC566896
Tauschia hartwegii
H. L. Mason
1926-5-28
3266
Placer
hills near Auburn (Auburn)
Comment
UC566898
Tauschia hartwegii
H. L. Mason
1926-5-28
3268
Placer
five mi above Auburn
Comment
UC635036
Tetragonia tetragonoides
H. L. Mason
1928-9-2
4942
Alameda
Bay Farm Island
Comment
UC1083126
Thalictrum fendleri
Herbert L. Mason
1936-7-27
11367
Tuolumne
w Tioga Pass; Sierra Nevada, Yosemite National Park, Gaylor Lakes
3200
Comment
UC1056454
Thysanocarpus curvipes
Herbert L. Mason
1936-3-20
11011
Tuolumne
three mi above Tuolumne
Comment
RSA28578
Thysanocarpus radians
H. L. Mason
1934-3-25
7933
Sacramento
Keithly ranch, Rio Linda.
30
Comment
UC570910
Tiarella trifoliata var. unifoliata
H. L. Mason
1928-7-11
4888
Sonoma
Canyon 2 mi n Fort Ross; n of Fort Ross
Comment
UC1081527
Tiquilia nuttallii
Herbert L. Mason
1936-8-1
11500
Mono
3 mi. n. Mono Lake; Sierra Nevada, Yosemite Nat'l Park
2072
Comment
UC1191833
Tiquilia nuttallii
Herbert L. Mason
1948-9-5
13680
Mono
Mono craters
Comment
UC672568
Tonella tenella
H. L. Mason
1926-3-21
2769
Lake
Middletown to Mt. St. Helena (via Toll House Canyon); Toll House Canyon
Comment
UC566830
Torilis nodosa
Herbert L. Mason
1926-5-24
3221
Alameda
University of California Berkeley, campus
Comment
UC1083326
Torreya californica
Herbert L. Mason
1926-3-6
2684
Marin
Mt. Tamalpais
Comment
CAS-BOT-BC519584
Triantha occidentalis subsp. occidentalis
Herbert L. Mason
1950-7-15
14052
Trinity
Summit of grade, Scott Mountain
Comment
UC570719
Trichostema lanatum
H. L. Mason
1923-6-16
438
Santa Barbara
La Combre peak via La Combre Trail and Rattlesnake Canyon
Comment
UCD125875
Trichostema laxum
Herbert L. Mason
1946-7-4
12897
Sonoma
2 miles east of Occidental.
Comment
UC555616
Trifolium albopurpureum var. albopurpureum
H. L. Mason
1926-4-10
Alameda
Arroyo Machp Canyon Cedar Mtn
Comment Read comments Jan 24 2013
UC555446
Trifolium barbigerum
H. L. Mason
1931-4-12
5843
Sonoma
1.5 mi w Fulton
Comment
UC555605
Trifolium barbigerum
H. L. Mason
1928-5-4
4502
El Dorado
Shingle Springs
Comment
UC1076192
Trifolium barbigerum
Herbert L. Mason
1934-4-28
8095
Sonoma
Hwy betw Healdsburg and Santa Rosa
Comment
UC1081548
Trifolium bolanderi
Herbert L. Mason
1936-8-6
11518
Mariposa
Peregoy Meadow Yosemite National Park (Glacir Point Rd)
2255
Comment
UC1081547
Trifolium breweri
Herbert L. Mason
1936-8-6
11517
Mariposa
Wawona Rd Sierra Nevada, Yosemite National Park
Comment
UC555598
Trifolium ciliolatum
H. L. Mason
1928-4-26
4383
Contra Costa
Berkeley-Oakland HIlls
Comment
UC555353
Trifolium depauperatum var. amplectens
H. L. Mason
1928-4-25
4376
San Francisco
Hunter's Point
Comment
UC555371
Trifolium depauperatum var. amplectens
H. L. Mason
1929-4-7
5173
Stanislaus
6 mi w Oakdale
Comment
UC555370
Trifolium depauperatum var. truncatum
H. L. Mason
1928-4-28
4439
Marin
Tiburon Peninsula
Comment
POM312878
Trifolium eriocephalum subsp. eriocephalum
H. L. Mason
1948-7-17
13601
Siskiyou
Eastern Grass Lake, in forested hills
Comment
UC555455
Trifolium eriocephalum var. eriocephalum
H. L. Mason
1931-5-9
5868
Siskiyou
5 mi n Yreka
Comment
UC555594
Trifolium fucatum
H. L. Mason
1928-4-15
4351
Alameda
e Moraga Ridge
Comment
UC555448
Trifolium gracilentum
H. L. Mason
1929-3-31
5150
Contra Costa
along San Joaquin River; Antioch
Comment
UC555450
Trifolium gracilentum
H. L. Mason
1926-4-26
2951
Los Angeles
4 mi w Saugus
Comment
UC555459
Trifolium gracilentum
H. L. Mason
1932-3-20
6844
Contra Costa
Antioch sand hills
Comment
UC1195918
Trifolium longipes
Herbert L. Mason
1958-8-9
14865
Tuolumne
w Hetch Hetchy Dam (Swamp Lake); Sierra Nevada, Yosemite National Park
1584
Comment
UC1111534
Trifolium longipes var. hansenii
Herbert L. Mason
1936-8-6
11503
Mariposa
Glacier Point Rd Sierra Nevada, Yosemite National Park, Paragoy Meadow
2255
Comment
UC555600
Trifolium microcephalum
Herbert L. Mason
1927-4-23
3679
San Mateo
summit of rd from La Honda to Pescadero Creek
Comment
UC555609
Trifolium microdon
H. L. Mason
1928-4-28
4406
Marin
Tiburon peninsula
Comment
UC555612
Trifolium microdon
H. L. Mason
1928-4-15
4347
Alameda
e end of Moraga Ridge Moraga Ridge
Comment
UC555477
Trifolium oliganthum
H. L. Mason
1929-4-7
5179
Stanislaus
ca 10 mi above Oakdale; Sierra foothills
Comment
UC555614
Trifolium oliganthum
H. L. Mason
1928-5-6
4560
Alameda
Cedar Mtn
Comment
UC1179051
Trifolium variegatum
Herbert L. Mason
1939-7-11
12118
Tuolumne
1/2 mi below Swamp Lake (w of Hetch Hetchy); Sierra Nevada, Yosemite National Park
1554
Comment
UC555582
Trifolium willdenovii
H. L. Mason
1928-4-13
4307
Contra Costa
Richmond waterfront
Comment
UC555570
Trifolium wormskioldii
H. L. Mason
1925-7-4
2145
Tuolumne
Mather Sierra Nevada, Yosemite National Park
Comment
UC555571
Trifolium wormskioldii
H. L. Mason
1928-4-17
4362
San Francisco
s Colma (hills)
Comment
POM313027
Triglochin maritima
H. L. Mason, Verne Grant
1947-7-12
13438
Modoc
Corporation Ranch Headquarters, north of Likely.
Comment
UC1039622
Trillium angustipetalum
Herbert L. Mason
1940-7-7
12327
Tuolumne
s. of Miguel Meadow and Swamp Lake (Poison Meadow); Poison Meadow
Comment
UC1178864
Triphysaria versicolor subsp. versicolor
Herbert L. Mason
1940-5-22
12304
Mendocino
headland n Pudding Creek Slough ((near Fort Bragg)); headland n of Pudding Creek Slough
Comment
UC1108811
Trisetum spicatum
Herbert L. Mason
1936-7-24
11342
Tuolumne
White Mountain; Conness Range
Comment
UC1077074
Triteleia ixioides subsp. scabra
Herbert L. Mason
1938-5-10
11818
Tulare
near Auckland
457
Comment
UC635732
Triteleia laxa
H. L. Mason
1929-3-15
5062
Contra Costa
about 5 mi from Brentwood (Marsh Creek Road)
Comment
CAS-BOT-BC526458
Triteleia laxa
H. L. Mason
1917-4-28
s.n.
Marin
Mill Valley
Comment
UC634756
Triteleia lilacina
H. L. Mason
Apr 1930
5556
Calaveras
hills w of San Andreas
Comment
UC1178972
Triteleia peduncularis
Herbert L. Mason
1946-5-30
12809
Lake
Indian Valley , Indian Valley (North Fork Cache Creek)
Comment
JEPS54271
Tropidocarpum capparideum
Herbert L. Mason
1920-3-27
5115
Alameda
fields behind Mountain House (Altamont Pass); Altamont Pass
Comment
UC673305
Tropidocarpum gracile
H. L. Mason
1929-3-31
5152
Contra Costa
sand dike along river at Antioch; San Joaquin River
Comment
UC673338
Tropidocarpum gracile
H. L. Mason
1929-3-31
5148
Contra Costa
in pastures Briones Valley
Comment
UC672364
Turricula parryi
Herbert L. Mason
1923-6-19
517
Ventura
Horn Canyon
Comment
UC1093861
Typha angustifolia
Herbert L. Mason
1937-6-17
11543
Alameda
Thornhill Pool Oakland
Comment
UC1241759
Typha domingensis
Herbert L. Mason
1948-6-29
13576
San Joaquin
one mi n Tracy; San Joaquin Valley
Comment
UC635504
Umbellularia californica
H. L. Mason
Nov 26 1925-Nov 27 1925
2492
Sonoma
Monte Rio, Russian River Russian River; Monte Rio, Russian River
Comment
UC1101461
Utricularia gibba
Herbert L. Mason and Verne Grant
1941-9-27
13137 a
Butte
3 mi. w. Biggs (Butte Sink); Butte Sink
Comment
UC1101462
Utricularia gibba
Herbert L. Mason
1938-7-6
11854
Tuolumne
w. Hetch Hetchy Dam (just s. of Miguel Meadows, Swamp Lake, Yosemite Nat'l Park); Yosemite Nat'l Park, Swamp Lake
1584
Comment
UCD121676
Utricularia gibba
Herbert L. Mason
1945-8-24
12670
Lake
Boggs Lake.
Comment
JEPS9174
Utricularia intermedia
H. L. Mason
1924-6-26
Plumas
Blairsden
Comment
UC635680
Utricularia intermedia
Herbert L. Mason
1924-6-26
1090
Plumas
Graeagle near Blairsden; Graeagle
Comment
UC635676
Utricularia macrorhiza
Herbert L. Mason
1929-9-9
5422
San Joaquin
Holt, lower San Joaquin R.
Comment
YM-YOSE66550
Utricularia vulgaris
Harry L. Mason
1938-7-10
11916
Tuolumne
SWAMP LAKE RESEARCH RESERVE, SOUTH ISLAND OF LAKE
Comment
CAS-BOT-BC193383
Vaccinium ovatum
H. L. Mason
1928-4-8
4289 a
Sonoma
Two miles north of Fort Ross.
Comment
UC571032
Vaccinium ovatum
Herbert L. Mason
1927-9-25
4101
Santa Barbara
Pine Ridge, slopes toward West Ranch Santa Cruz Island
Comment
UC571026
Vaccinium parvifolium
H. L. Mason
Jun 1930
5636
Mendocino
Fort Bragg
Comment
UC571036
Vaccinium uliginosum subsp. occidentale
Herbert L. Mason
1923-7-31
677
Tuolumne
Lyell Fork of the Tuolumne River Yosemite National Park, Tuolumne River
Comment
UC962127
Vaccinium uliginosum subsp. occidentale
H. L. Mason
1923-7-31
677
Tuolumne
Dana Fork Sierra Nevada Mountains, Yosemite National Park
Comment
JEPS5119
Valerianella locusta
H. L. Mason
1932-4-25
Amador
Cosumnes River bridge (Amador Co. side), Ione to Latrobe Cosumnes River; Cosumnes River bridge
Comment
POM312343
Velezia rigida
H. L. Mason
1948-5-31
13571
Stanislaus
Stanislaus river, near Knight s Ferry.
Comment
UC912223
Venegasia carpesioides
Herbert L. Mason
1923-6-15
420
Santa Barbara
Gaviota Pass
Comment
UC672061
Veratrum fimbriatum
Herbert L. Mason
1928-8-25
4929
Mendocino
mesa 1 mi e mouth of Noyo River; Noyo
Comment
UC1177529
Veronica americana
Herbert L. Mason, B. Fuller, H. Whisler
1958-7-13
26
Nevada
1 mi w of University of California Trout Laboratory (12 mi n of Truckee, Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
UC1191897
Veronica anagallis-aquatica
Herbert L. Mason, S. Galen Smith
1948-8-9
8274
Santa Clara
about 6 mi e of Gilroy (w base of Pacheco Pass); Pacheco Pass
Comment
UC964735
Veronica peregrina subsp. xalapensis
H. L. Mason
1925-6-25
2113
Tuolumne
Mather, Hog Ranch Hog Ranch; Mather, Hog Ranch
Comment
UC965650
Veronica peregrina subsp. xalapensis
Herbert L. Mason
1952-7-19
14457
Sierra
1.5 mi e of Calpine (at junction of; with Sierraville-Beckwourth road); Sierra Nevada, Sierra Valley
1524
Comment
UC672498
Veronica persica
Herbert L. Mason
1930-6-1
5620
Mendocino
Cloverdale to Fort Bragg via the Navarro River
Comment
UC1195917
Veronica scutellata
Herbert L. Mason
1958-8-9
14849
Tuolumne
w of Hetch Hetchy DAm (Swamp Lake, Yosemite National Park); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC672513
Veronica serpyllifolia subsp. humifusa
H. L. Mason
1925-7-30
2194
Tuolumne
ne of Mather (Smith Peak trail); Smith Peak trail
Comment
SEINET7370957
Vicia
E. W. Mason
1976-3-13
s.n.
Placer
About 2 miles north of Auburn, North Fork American River
274
Comment
UC673611
Vicia americana var. americana
Herbert L. Mason
1927-4-23
3675 a
San Mateo
summit of road from La Honda to Pescadero Creek
Comment
RSA77752
Viola adunca
H. L. Mason
1923-7-9
579
Tuolumne
Mather.
Comment
UC581501
Viola adunca
H. L. Mason
1923-7-28
655
Tuolumne
White Wolf, Tioga Pass Road White Wolf
2438
Comment
UC581487
Viola douglasii
H. L. Mason
1926-4-30
3140
San Diego
fields near Henshaw Dam
Comment
CAS-BOT-BC536569
Viola glabella
Herbert L. Mason
1927-4-23
3672
San Mateo
La Honda
Comment
JEPS19309
Viola hallii
Herbert L. Mason
1947-5-17
14781
Trinity
Summit of Scott Mountain grade
Comment
UC581509
Viola lobata subsp. lobata
H. L. Mason
1925-7-30
2199
Tuolumne
Smith Peak Trail ne of Mather; Smith Peak Trail
Comment
UC581497
Viola lobata subsp. lobata
H. L. Mason
1926-5-29
3290
Placer
burned area 2 mi w of Emmigrant Gap
Comment
RSA130981
Viola ocellata
H. L. Mason
1917-3-8
66
San Mateo
Kings Mtn.
Comment
UC581526
Viola ocellata
H. L. Mason
1932-4-17
6949
Santa Clara
road to Sweedal (headwaters of Uvas Creek); Uvas Creek
Comment
UC581538
Viola ocellata
Herbert L. Mason
1927-4-23
3696
San Mateo
Pescadero Creek near Bloomquists Mill; Pescadero Creek
Comment
UC581516
Viola pedunculata
H. L. Mason
1926-3-1
1270
San Francisco
Bernal Heights
Comment
UC581524
Viola pinetorum subsp. pinetorum
H. L. Mason
1923-7-28
666
Mariposa
Porcupine Flat, Tioga Pass Road Porcupine Flat
Comment
UC1076025
Viola purpurea subsp. integrifolia
Herbert L. Mason
1947-5-17
14767
Trinity
Scott Mountain Divide
Comment
UC581522
Viola purpurea subsp. quercetorum
H. L. Mason
1928-5-6
4565
Alameda
Cedar Mountain; Mount Hamilton Range, Cedar Mountain
Comment
UC581493
Viola sempervirens
H. L. Mason
1927-4-23
3668
San Mateo
La Honda
Comment
GH341837
Vulpia microstachys var. ciliata
H. L. Mason
1932-5-4
7066
Unknown
Laundry farm, Oakland hills
Comment
CAS-BOT-BC185821
Vulpia myuros subsp. megalura
Herbert L. Mason; Malcom A. Nobs
1949-4-27
722
Solano
Suisun State Game Refuge
Comment
CAS-BOT-BC185823
Vulpia myuros subsp. megalura
Herbert L. Mason; Malcom A. Nobs
1949-4-27
722
Solano
Suisun State Game Refuge
Comment
UC570904
Whipplea modesta
Herbert L. Mason
1932-7-21
7112
Humboldt
on road from Arcata to Weaverville (e slope of mts.); Southfork Mountains
Comment
UC1112276
Wolffia borealis
H. L. Mason
1955-6-8
14629
Shasta
w edge Fall River Mill (at the bridge)
Comment
CAS-BOT-BC534960
Wolffia borealis
H. L. Mason
1955-6-8
14629
Shasta
Bridge, W edge of Fall River Mill
Comment
UC1101235
Wolffiella lingulata
Herbert L. Mason and S. Galen Smith
1948-7-28
8227
Merced
2 mi n Los Banos; San Joaquin Valley, Los Banos Wildlife Refuge
Comment
UC635135
Wolffiella lingulata
H. L. Mason
1937-6-21
11548
San Joaquin
0.5 mi sw Holt, Roberts Island (Trappers Slough); Trappers Slough
Comment
UC936135
Wolffiella lingulata
Herbert L. Mason
1945-10-10
San Joaquin
Trappers Slough San Joaquin River, Roberts Island (Roberts Island, delta of the San Joaquin River)
Comment
CAS-BOT-BC535200
Wolffiella lingulata
Herbert L. Mason
1937-6-21
11548
San Joaquin
Trapper Slough, 1/2 mile southwest of Holt, Robert Island
Comment
UC912509
Wyethia angustifolia
Herbert L. Mason
1934-4-28
8073
Sonoma
head Dohrman's Creek; Jensen's Ranch
Comment
RSA130400
Wyethia helenioides
H. L. Mason
1917-04
s.n.
Santa Clara
Foothills back of Santa Clara.
Comment
UC632873
Wyethia helenioides
H. L. Mason
1936-4-10
11048
Calaveras
road between Murphy's and Angel's Camp
Comment
UC912237
Xanthium spinosum
Herbert L. Mason
1923-10-6
767
Napa
in pasture bordering Suisun Marsh
Comment
UC566875
Yabea microcarpa
H. L. Mason
1926-4-11
2848
Alameda
Cedar Mountain Mount Hamilton Range (Rancho Repose)
Comment
UC1099976
Zannichellia palustris
Herbert L. Mason
1948-6-29
13582
Merced
5 mi. n. Volta
Comment
UC1099979
Zannichellia palustris
Herbert L. Mason and Verne Grant
1947-7-9
13401
Modoc
several mi. s. Alturas (irrigation ditch by Jones' Lane off Hwy. 395)
Comment
UC1099991
Zannichellia palustris
Herbert L. Mason
1929-8-24
5397
Mendocino
Fort Bragg, Pudding Creek Slough
Comment
CAS-BOT-BC454210
Zannichellia palustris
Herbert L. Mason; Verne Grant
1947-7-8
13281
Lake
Bear Creek near junction of Williams highway and Upper Lake highway
Comment
UC1077115
Zigadenus fremontii
Herbert L. Mason
1938-5-7
11772
Santa Barbara
Burton Mesa
Comment
UC673505
Zigadenus fremontii
H. L. Mason
1923-6-18
489
Ventura
Topa Topa Mountain
Comment
UC673512
Zigadenus fremontii
H. L. Mason
1927-3-11
3652
San Francisco
Bernal Heights San Francisco
Comment
UC673516
Zigadenus venenosus var. venenosus
H. L. Mason
1923-7-12
581
Tuolumne
Mather
Comment
UC1099958
Zostera marina
Herbert L. Mason
Jun 1930
5671
Marin
Dillon's Beach, washed up by surf
Comment