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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
UC912298
Abronia
Herbert L. Mason
1924-11-16
1151
Marin
Stinson Beach, Willow camp
Comment
UC912528
Abronia
Herbert L. Mason
1924-11-16
1152
Marin
Stinson beach, Willow Camp
Comment
UC555289
Acaena pinnatifida var. californica
H. L. Mason
1925-3-1
1266
San Francisco
Bernal Heights
Comment
CAS-BOT-BC219647
Acanthomintha lanceolata
Herbert L. Mason
1940-5-5
12284
San Benito
Panoche Pass ca. 6 miles southeast of Pacines [Paicines] and 2.4 miles east of Emmet [Emmett] School, San Carlos Range
609
Comment
UC570747
Acanthomintha lanceolata
H. L. Mason
1928-5-6
4556
Alameda
Cedar Mountain; Mount Hamilton Range, Cedar Mountain
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
CAS-BOT-BC30448
Achillea millefolium
Herbert L. Mason
1945-8-16
12659
Siskiyou
Grizzly Island, near Suisun Bay
Comment
POM312500
Achillea millefolium var. californica
H. L. Mason
1945-8-16
12659
Solano
Grizzly Island, near Suisun Bay
Comment
UC635417
Actaea rubra
H. L. Mason
1927-7-31
4006
Santa Cruz
Santa Cruz Mts., Mt. Herman
Comment
UC1093917
Actaea rubra
Herbert L. Mason
1936-7-9
11174
Mariposa
s. White wolf (e. slope of hill forming boundary between Tuolumne & Mariposa Co.'s); Sierra Nevada, Yosemite Nat'l Park
2590
Comment
UC555433
Adenostoma fasciculatum
H. L. Mason
1927-9-25
4107
Santa Barbara
hills about Pelican Bay; Santa Cruz Isl.
Comment
UC1093983
Adiantum aleuticum
Herbert L. Mason
1926-2-22
2663
Marin
Inverness
Comment
UC1077119
Adiantum jordanii
Herbert L. Mason
1925-3-7
1278
Alameda
0.5 mi sw of Sunol (bluff above stream junction)
Comment
UC912693
Adiantum jordanii
Herbert L. Mason
1936-3-14
10980
Calaveras
4 mi e Mokelumne Hill
Comment
CAS-BOT-BC202720
Aesculus californica
Herbert L. Mason
1925-6-27
2129
Tuolumne
Tuolumne Canyon, near Mather
1371
Comment
UC635202
Aesculus californica
Herbert L. Mason
1925-6-27
2129
Tuolumne
near Mather (Tuolumne Canyon); Tuolumne Canyon
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
UC571021
Ageratina occidentalis
H. L. Mason
1928-10-4
5464
El Dorado
14 mi from; w side of Lake Tahoe above Emerald Bay; Tahoe City
Comment
CAS-BOT-BC295552
Agnorhiza bolanderi
H. L. Mason
1936-3-21
11029
Mariposa
Four miles north of Coulterville
Comment
UC632822
Agnorhiza bolanderi
H. L. Mason
1936-3-21
11029
Mariposa
4 mi n Coulterville
Comment
CAS-BOT-BC29604
Agoseris grandiflora var. grandiflora
Herbert L. Mason
1924-5-14
s.n.
Alameda
Haywards
Comment
UC635176
Agoseris heterophylla var. cryptopleura
H. L. Mason
1928-5-4
4503
El Dorado
4 mi n of Shingle Springs; Green Valley
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
SACT000120
Agrostis alba
Herbert Mason
1948-9-4
Mono
Rsuh Creek. Mono Lake.
Comment
UC1110539
Agrostis exarata
Herbert L. Mason
1939-8-3
12206
Placer
7 mi nw Tahoe City (Squaw Valley); Squaw Valley
1889
Comment
UC1102969
Agrostis scabra
Herbert L. Mason
1958-8-9
14892
Tuolumne
w of Hetch Hetchy Dam (Swamp Lake area); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1102974
Agrostis scabra
Herbert L. Mason
1958-8-9
14867
Tuolumne
w of Hetch Hetchy Dam (Swamp Lake area); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1111015
Agrostis thurberiana
Herbert L. Mason
1938-7-10
11908
Tuolumne
w of Hetch Hetchy Dam (South Island); Sierra Nevada, Yosemite National Park, Swamp Lake, South Isl
1584
Comment
SEINET3917556
Aira caryophyllea
Herbert L. Mason
1932-5-4
s.n.
Alameda
Laundry Farm. Oakland.; 0
Comment
RSA114061
Aliciella
H. L. Mason
1952-4-11
14249
San Bernardino
Black Lava Bed just east of Dagget.
Comment
SD46107
Aliciella leptomeria
Herbert L. Mason
1952-4-11
14249
San Bernardino
Black Lava Bed just east of Dagget.
Comment
POM264404
Aliciella monoensis
H. L. Mason
1941-7-13
12485
Mono
North of Mono Lake along road to Bodie.
Comment
UC985651
Alisma plantago-aquatica
Herbert L. Mason
1947-8-12
13508
Modoc
Alturas, junction of North and South Forks of Pit River Pit River
Comment
UC985664
Alisma plantago-aquatica
Herbert L. Mason and Lawrence W. Reinecke
1937-7-22
11610
Tuolumne
w Hetch-Hetchy; Yosemite National Park, Swamp Lake
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
UC1275785
Allium bisceptrum var. bisceptrum
Herbert L. Mason
1963-6-13
15208
Mono
Danburg Ranch Mono Lake, Danburg Ranch
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
UC635262
Allium campanulatum
H. L. Mason
1926-5-29
3296
Nevada
3 mi w Cisco
1767
Comment
UC635257
Allium campanulatum
H. L. Mason
1924-5-29
1030
Tuolumne
along trail between Mather and Tuolumne River
Comment
JROH4548
Allium falcifolium
H. L. Mason
1921-5-13
s.n.
San Mateo
Jasper Ridge Biological Preserve, Stanford University
Comment
UC635244
Allium hyalinum
H. L. Mason
1928-5-3
4486
El Dorado
near bridge of Cosumnes River (at mouth of Clark Creek); Cosumnes River, Clark Creek
Comment
UC1076331
Allium lacunosum
Herbert L. Mason
1926-4-26
3009
Los Angeles
Little Rock
Comment
UC635210
Allium lacunosum
H. L. Mason
1928-4-28
4391
Marin
Tiburon Peninsula
Comment
UC1178893
Allium lacunosum var. lacunosum
Herbert L. Mason
1940-5-20
12291
Marin
ourcrop back of Tiburon
Comment
UC635249
Allium serra
H. L. Mason
1929-3-29
5135
Contra Costa
Marsh Creek Road 2 mi e Claton; Marsh Creek Road
Comment
UC1178933
Allophyllum divaricatum
Herbert L. Mason
1953-6-8
14520
Lake
Butts Canyon, Black Oak Villa
Comment
UC907901
Allophyllum divaricatum
Herbert L. Mason
1927-6-11
3742
Los Angeles
Mt. Wilson San Gabriel Mts., Mt. Wilson
Comment
UC908934
Allophyllum divaricatum
Herbert L. Mason
1926-5-31
3361
Calaveras
1 1/2 mi. w. Calaveras Grove
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
SBBG64464
Allophyllum violaceum
H. L. Mason
1941-7-16
12487
El Dorado
Cold Crk, S of Lake Tahoe
2286
Comment
UC1076427
Alnus incana subsp. tenuifolia
H. L. Mason
1929-10-4
5463
Placer
4 mi s Truckee (on Truckee-Tahoe Rd, along river); Truckee River
Comment
UC1076356
Alnus rhombifolia
H. L. Mason
1930-10-25
5758
Monterey
Headwaters of the Arroyo Seco Santa Lucia Mts.
Comment
UC1076421
Alnus rhombifolia
Herbert L. Mason
1925-7-30
2187
Tuolumne
Smith Peak trail from Mather
Comment
UC1083216
Alnus rhombifolia
Herbert L. Mason and L. W. Reinecke
1937-7-22
11596
Tuolumne
s Miguel Meadows (in hills just w of Hetch Hetchy); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1100228
Alopecurus aequalis
Herbert L. Mason
1947-8-13
13520
Modoc
n. of Canby (n.e. side of F reservoir)
Comment
UC1212040
Alopecurus aequalis
Herbert L. Mason
1939-8-2
12196
El Dorado
s. end of Lake Tahoe (near mouth of Upper Truckee R.)
1920
Comment
UC1191390
Amaranthus californicus
Herbert L. Mason
1947-8-8
13461
Modoc
Southwest margin of Big Sage Reservoir, northwest of Alturas.
Comment
UC1191392
Amaranthus californicus
Herbert L. Mason and Verne Grant
1946-8-6
12968
Colusa
2.7 mi n Colusa (between Sacramento River and Butte Creek); Butte Sink
Comment
UC1191393
Amaranthus californicus
Herbert L. Mason
1945-8-24
12676
Lake
e shore of Lower Lake Lower Lake
Comment
UCD97543
Amaranthus powellii
Herbert L. Mason; Verne Grant
1947-7-10
13343
Modoc
Dorris Reservoir, 2 miles east of Alturas.
Comment
UC912213
Ambrosia acanthicarpa
Herbert L. Mason
1928-10-2
4973
Monterey
1 mi below, (at Salinas River) Salinas; Salinas River
Comment
UC1192148
Ambrosia psilostachya
Herbert L. Mason
1945-8-17
12668
Solano
1.5 mi n of Rio Vista
Comment
UCD128879
Ambrosia salsola
Steve Mason
1993-5-2
33
Los Angeles
Mojave Desert, just N of Saddleback Butte State Park on E. 190th St. (N5), 0.1 mi. N of Ave. J., 50-100' off East side of road.
853
Comment
UC912204
Ambrosia salsola var. salsola
Herbert L. Mason
1928-3-10
4220
Riverside
Hidden Springs Canyon Coachella Mountains
Comment
UC1101419
Ammannia coccinea
Herbert L. Mason and Verne Grant
1946-9-27
13141 -A
Butte
3 mi. w. Biggs
Comment
UC1191561
Ammannia coccinea
Herbert L. Mason
1945-9-19
12716
Colusa
1 mi. above Colusa (below causeway over Butte Sink spillway, e. bank Sacramento R.); Butte Sink, Sacramento R.
Comment
UC1191563
Ammannia coccinea
Herbert L. Mason
1945-9-19
12739
Butte
n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge
Comment
UCD102897
Ammannia robusta
Herbert L. Mason; S. Galen Smith
1948-8-18
8355
Kings
West of Stratford.
Comment
UC573137
Amsinckia lycopsoides
H. L. Mason
1932-3-19
6816
San Joaquin
w of Tracy (road from Mountain House to Midway)
Comment
UC573056
Amsinckia vernicosa var. vernicosa
H. L. Mason
1930-4-20
5574
Kern
hills between Mohave and Lancaster; Mohave Desert
Comment
CAS-BOT-BC45277
Ancistrocarphus filagineus
H. L. Mason
1934-4-28
8093
Sonoma
Jensen's Ranch, Dohrmann Creek
Comment
CAS-BOT-BC64164
Ancistrocarphus filagineus
H. L. Mason
1933-4-30
7227
Lake
Near Aetna Springs
Comment
UC1060647
Ancistrocarphus filagineus
Herbert L. Mason
1957-5-11
14697
San Benito
2-3 mi e Hernandez
Comment
UC581123
Ancistrocarphus filagineus
H. L. Mason
1934-4-28
8093
Sonoma
Jenson's Ranch; Dohrmann Creek
Comment
UC673627
Ancistrocarphus filagineus
H. L. Mason
1932-4-19
7012
El Dorado
Pilot Hill
Comment
GH424256
Androsace elongata subsp. acuta
H. L. Mason
1932-3-19
6820
Unknown
two miles east of Midway
Comment
UC1111009
Androsace elongata subsp. acuta
Herbert L. Mason
1928-3-4
4166
Contra Costa
Shell Ridge
Comment
UC635715
Androsace elongata subsp. acuta
H. L. Mason
1932-3-31
6855
Kern
Tehachapi Pass
Comment
UC635716
Androsace elongata subsp. acuta
H. L. Mason
1932-3-19
6820
San Joaquin
two mi e Midway
Comment
CAS-BOT-BC391766
Anemone deltoidea
H. L. Mason
1929-5-9
5280
Mendocino
Bull Creek Flat
Comment
UC1039607
Anemone tuberosa
Herbert L. Mason
1940-3-22
12236
Inyo
Death Valley Nat'l Monument, Grape Vine Mts., Titus Canyon
Comment
CAS-BOT-BC63958
Antennaria argentea
Herbert L. Mason
1936-7-12
11240
Mariposa
Peregoy Meadow, Glacier Point road
2255
Comment
UC1076045
Antennaria dimorpha
Herbert L. Mason
1947-5-17
14777
Trinity
summit of, (Trinity-Siskiyou County line) Scott Mountain Grade
Comment
CAS-BOT-BC77253
Antennaria microphylla
H. L. Mason
1939-7-8
12162
El Dorado
Northeast end of Fallen Leaf Lake
1950
Comment
SEINET186009
Antennaria rosea
H. L. Mason
1939-7-8
12162
El Dorado
NE end of Fallen Leaf Lake
1951
Comment
SEINET2030007
Antennaria rosea
H. L. Mason
1939-7-8
12162
El Dorado
Northeast end of Fallen Leaf Lake
1951
Comment
UC912548
Antennaria rosea
Herbert L. Mason
1933-9-2
7266
Amador
Silver Lake Sierra Nevada Mountains, Silver Lake
Comment
UCD123430
Antirrhinum cornutum
Herbert L. Mason
1940-5-10
14804
Lake
Obsidian pond, north of Lower Lake.
Comment
UC672555
Antirrhinum coulterianum
H. L. Mason
1926-4-26
2949
Los Angeles
Pacoima Wash; San Gabriel Mountains
Comment
UC672556
Antirrhinum coulterianum
H. L. Mason
1927-6-11
3746
Los Angeles
Mount Wilson; San Gabriel Mountains
Comment
UC672564
Antirrhinum nuttallianum subsp. subsessile
H. L. Mason
1926-4-25
2907
Orange
5 mi s Laguna
Comment
UC672563
Antirrhinum virga
H. L. Mason
1926-1-1
2586
Lake
Upper Lake to Elk Mountain
Comment
UC753545
Apiastrum angustifolium
Herbert L. Mason
1946-6-7
12837
Santa Barbara
0.5 mi above Cameusa Creek (on road to Oso Gate, San Rafael Range); San Rafael Range
731
Comment
UC566935
Apocynum androsaemifolium
H. L. Mason
1932-5-6
7071
Alameda
Oakland Hills, Skyline Blvd.
Comment
UC623309
Apocynum androsaemifolium
H. L. Mason
1939-5-18
12104
Napa
Wooden Valley
Comment
UC1191809
Apocynum cannabinum
Herbert L. Mason and Verne Grant
1947-6-26
13244
Solano
Suisun Marsh, Cordelia Slough
Comment
UC665734
Apocynum cannabinum
Herbert L. Mason
1942-7-15
12555
Solano
4 1/2 mi. n.w. Vacaville (Buctown Ranch); Buctown Ranch
Comment
RSA131269
Apocynum pumilum var. rhomboideum
H. L. Mason
1931-7-14
s.n.
San Mateo
Pescadero Creek, La Honda Road.
Comment
UC1083127
Aquilegia formosa
Herbert L. Mason
1936-7-27
11369
Tuolumne
w Tioga Pass (Gaylor Lakes); Sierra Nevada, Yosemite National Park
3200
Comment
UC634930
Aquilegia formosa
H. L. Mason
1923-7-12
586
Tuolumne
Mather Sierra Nevada Mtns, Yosemite National Park
Comment
UC635108
Aquilegia pubescens
H. L. Mason
1923-7-31
678
Tuolumne
Dana Fork Sierra Nevada Mtns
Comment
UC565472
Arabis blepharophylla
Herbert L. Mason
1925-3-1
1271
San Francisco
Bernal Heights San Francisco
Comment
UC559954
Arabis drummondii
H. L. Mason
1936-7-31
11464
Mono
e of Saddlebag Lake; Sierra Nevada, Tioga Crest
3474
Comment
UC1178916
Arabis pulchra
Herbert L. Mason
1935-4-30
8351
Kern
Walker Pass
Comment
GH343975
Arbutus menziesii
H. L. Mason
1930-10-25
5751
Unknown
Headwaters of Arroyo Seco, Santa Lucia Mountains
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
UC1039599
Arceuthobium campylopodum
Herbert L. Mason
1929-12-1
5515
Monterey
Huckleberry Hill Carmel
Comment
UC1076468
Arceuthobium campylopodum
Herbert L. Mason
1927-7-30
3987
Monterey
Cypress Point
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
UC571090
Arctostaphylos canescens subsp. canescens
H. L. Mason
1926-1-2
2612
Napa
Toll House Canyon Mount St. Helena (near summit of mt.)
Comment
GH350222
Arctostaphylos densiflora
H. L. Mason
1931-3-7
5805
Unknown
Vine Hill School, twelve miles west of Santa Rosa
Comment
JEPS38650
Arctostaphylos glandulosa subsp. glandulosa
Herbert L. Mason
1927-9-25
4106
Santa Barbara
Pine Ridge Santa Cruz Island, Buena Vista Canyon
Comment
UC571225
Arctostaphylos glandulosa subsp. glandulosa
H. L. Mason
1925-1-23
1205 a
Napa
Wooden Valley Grade
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
UCD52533
Arctostaphylos myrtifolia
Geo. 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 County.
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
UC634746
Arctostaphylos nummularia
Herbert L. Mason
1927-7-31
3997
Santa Cruz
hills s Mt. Herman
Comment
A362003
Arctostaphylos pechoensis var. viridissima
H. L. Mason
1938-5-8
11803
Unknown
vicinity of the summit of Figueroa Mountain
Comment Read comments Feb 19 2015
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
CAS-BOT-BC44766
Arctostaphylos purissima
H. L. Mason
1938-5-7
11776
Santa Barbara
Burton Mesa
Comment
UC571217
Arctostaphylos purissima
H. L. Mason
1923-6-15
416 a
Santa Barbara
Harris Grade
Comment
UC571226
Arctostaphylos stanfordiana
H. L. Mason
1926-1-2
2611
Napa
Toll House Canyon Mount St. Helena
Comment
UC571221
Arctostaphylos tomentosa subsp. eastwoodiana
Herbert L. Mason
1934-3-31
8052
Santa Barbara
n Lompoc; La Purissima Ridge
Comment
UC634745
Arctostaphylos uva-ursi
H. L. Mason
1930-3-9
5520
Marin
summit of promontory Point Reyes
Comment
GH362400
Arctostaphylos viscida
H. L. Mason
1928-5-3
4466
Unknown
one mile south of Ione
Comment
RSA381125
Arctostaphylos viscida subsp. viscida
George Mason, John M. Tucker, Roman Gankin, C. T. Mason
1956-10-27
193
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
SBBG83956
Arctostaphylos viscida subsp. viscida
G. Mason, J. M. Tucker, R. Gankin
1956-10-27
193
Amador
0.5 mi N of Mokelumne River behind high cliffs, across the river from Comanche
Comment
UC571237
Arctostaphylos viscida subsp. viscida
H. L. Mason
1928-5-3
4466
Amador
one mi s Ione (type loc.)
Comment
UC712379
Arenaria kingii var. glabrescens
Herbert L. Mason
1936-7-28
11420
Mono
vicinity of Mount Dana Sierra Nevada, Mount Dana, Dana Plateau
335
Comment
UC1081559
Arnica mollis
Herbert L. Mason
1936-7-31
11477
Mono
near Saddlebag Lake; Sierra Nevada, Yosemite National Park, Tioga Crest
3200
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
UC712194
Arnica nevadensis
Herbert L. Mason
1936-7-31
11469
Mono
near Saddlebag Lake; Sierra Nevada, Tioga Crest
3291
Comment
UC588138
Asarum lemmonii
Herbert L. Mason
May 15 - 16, 1936
11132
Mariposa
East fork of the Chowchilla River, Chowchilla Mountains
Comment
UC543748
Asarum lemmonii
Herbert L. Mason
1925-8-11
2213
Tuolumne
Big Oak Flat Road near Tuolumne Grove
Comment
UC635030
Asarum lemmonii
H. L. Mason
July 1930
5705
Calaveras
Near Hermit Springs, Blue Creek, a tributary of the North Rork of the Mokelumne River, Sierra Nevada Mountains
Comment
UC566927
Asclepias speciosa
H. L. Mason
1923-7-13
591
Tuolumne
Hog.Ranch Mather
1432
Comment
UC566931
Asclepias vestita
H. L. Mason
1934-3-30
8038
Los Angeles
Yucca Grove Antelope Valley
Comment Read comments Dec 13 2011
UC1076337
Aspidotis californica
Herbert L. Mason
1924-11-15
1133
Marin
Willow Camp via Pipe line Willow Camp; Bolinas Bay
Comment
UC912689
Aspidotis californica
Herbert L. Mason
1936-4-12
11075
Amador
Lancha Plana
Comment
UC1076342
Aspidotis densa
Herbert L. Mason
1926-1-2
2609
Napa
Toll House Canyon; Mt St Helena
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
POM312507
Aster frondosus
H. L. Mason
1947-8-11
13487
Modoc
Reservoir, Kelley Hot Springs, on Alturas-Conby Highway
Comment
POM312494
Aster occidentalis
H. L. Mason
1947-8-9
13480
Modoc
East side of Fairchild Swamp, north of Alturas
Comment
CAS-BOT-BC178633
Astragalus coccineus
H. L. Mason
1926-4-27
3044
Los Angeles
Rock Creek, San Gabriel Mountains
Comment
UC635297
Astragalus didymocarpus
H. L. Mason
1932-4-1
6884
Kern
five mi s Muroc (Mojave Desert); , s of Muroc
Comment
CAS-BOT-BC177949
Astragalus didymocarpus var. didymocarpus
H. L. Mason
1932-4-1
6884
Kern
Five miles south of Muroc, Mojave Desert
Comment
UC635304
Astragalus gambelianus
H. L. Mason
1928-4-25
4366
San Francisco
Hunter's Point
Comment
UC714376
Astragalus kentrophyta var. danaus
H. L. Mason
1936-7-30
11446
Tuolumne
vicinity Mount Conness (Shepherds Crest); Sierra Nevada, vicin Mount Conness, Shepherds Crest
Comment
CAS-BOT-BC194268
Astragalus oxyphysus
H. L. Mason
1930-3-30
5541
San Benito
San Benito River Canyon, fourteen miles below Pinnacles
Comment
UC712320
Astragalus purshii var. lectulus
H. L. Mason
1936-7-31
11457
Mono
e Saddlebag Lake (Tioga Crest, Sierra Nevada); Sierra Nevada, Tioga Crest, e of Saddlebag Lake
3474
Comment
UC1191184
Athyrium filix-femina var. cyclosorum
Herbert L. Mason
1937-7-26
14826
Tuolumne
Mahan Peak; Sierra Nevada, Yosemite Nat'l Park
2784
Comment
UC673343
Athysanus pusillus
H. L. Mason
1929-4-29
5237
Lake
2.9 mi w of Lakeport
Comment
UC1191366
Atriplex confertifolia
Herbert L. Mason
1948-9-5
13677 a
Mono
Island in Mono Lake; Island in Mono Lake
Comment
UCD97524
Atriplex lentiformis
Herbert L. Mason; S. Galen Smith
1948-8-10
8317
Merced
Mendota Pool, at entrance of Firebaugh Canal, west side.
Comment
UCD97819
Atriplex serenana
Herbert L. Mason
1927-11-27
4149
Santa Barbara
Carpenteria.
Comment
POM312480
Atriplex serenana
H. L. Mason, S. Smith
1948-7-29
8232
Merced
North Mercy Springs road, about 4 miles N of Los Banos.
Comment
UC1076222
Atriplex triangularis
Herbert L. Mason
1927-10-4
4137
Santa Cruz
mouth Waddell Creek (Ano Nuevo Point, in marshy ground near the sea); Ano Nuevo Point, mouth of Waddell Creek
Comment
UCD136022
Azolla filiculoides
Herbert L. Mason
1947-8-12
13503
Modoc
Junction of North and South forks of Pit River, Alturas.
Comment
UC672308
Baccharis pilularis
Herbert L. Mason
1925-12-31
2571
Lake
Bartlet Mountain Road
Comment
CAS-BOT-BC106767
Baccharis salicifolia
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
UC566709
Baileya pauciradiata
H. L. Mason
1928-3-10
4196
Riverside
Whitewater River Colorado Desert, Whitewater River
Comment
UC1191425
Bassia hyssopifolia
Herbert L. Mason
1946-8-6
12958
Colusa
pond on Colusa-Marysville Highway four mi s Colusa (w side of Sacramento River); w side of Sacramento River
Comment
SACT000424
Beckmannia syzigachne
Herbert Mason
1953-7-7
Sierra
Sierra Valley; Common
Comment
UC1100213
Beckmannia syzigachne
Herbert L. Mason and Malcolm A. Nobs
1953-7-7
14558
Sierra
pond 1.5 mi e Calpine; Sierra Valley
Comment
UC1192261
Bergia texana
Herbert L. Mason, S. Galen Smith
1948-8-18
8347
Kings
Just west of Stratford
Comment
UC1192265
Bergia texana
Herbert L. Mason
1947-8-8
13462
Modoc
Southwest margin of Big Sage Reservior, northwest of Alturas
Comment
UC1192267
Bergia texana
Herbert L. Mason
1945-8-24
12681
Lake
East Shore, Lower Lake
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
UC912220
Bidens frondosa
Herbert L. Mason
1929-9-21
5446
Contra Costa
2.6 mi ne of Byron (Borden Highway); Borden Highway
Comment
POM312324
Bidens frondosa
H. L. Mason, S. Galen Smith
1948-8-12
8333
Merced
About 5 miles east of Gustine
Comment
UC912219
Bidens frondosa
Herbert L. Mason
1929-10-4
5452
Placer
1.5 mi from Auburn
Comment
UC1077120
Blechnum spicant
Herbert L. Mason
1926-2-22
2664
Marin
Inverness
Comment
UC1076190
Blepharipappus scaber
Herbert L. Mason
1931-5-9
5873
Siskiyou
4 mi n of Dunsmuir
Comment
UC642720
Boechera depauperata
H. L. Mason
1936-7-28
11401 a
Mono
vicinity Mount Dana; Sierra Nevada, Dana Plateau
3657
Comment
CAS-BOT-BC13955
Boechera lemmonii
H. L. Mason
1936-7-28
11401 a
Mono
Sierra Nevada. Vicinity of Mount Dana. Dana Plateau.
3657
Comment
UC559953
Boechera lemmonii
H. L. Mason
1936-7-30
11445
Tuolumne
Shepherd's Crest Sierra Nevada, Mount Conness Range
3535
Comment
UC714371
Boechera lyallii
Herbert L. Mason
1936-7-24
11351
Tuolumne
White Mountain Mount Conness Range
3505
Comment
POM257255
Boisduvalia densiflora var. densiflora
H. L. Mason
1925-7-16
2163
Tuolumne
Hog Ranch
Comment
UC1191178
Bolandra californica
Herbert L. Mason
1937-7-26
14825
Tuolumne
Mahan Peak Yosemite National Park
2784
Comment
UC570903
Bolandra californica
Herbert L. Mason
1923-7-28
658
Tuolumne
head of creek near Porcupine Flat; Yosemite Creek
Comment
CAS-BOT-BC31037
Bolboschoenus maritimus
Herbert L. Mason
1948-5-31
13574
San Joaquin
three miles north of Ripon.
Comment
UC1100921
Bolboschoenus maritimus
Herbert L. Mason, Verne Grant
1946-8-13
13013
Colusa
on Williams highway by bridge two mi w Colusa (Butte Sink); , w of Colusa
Comment
CAS-BOT-BC31400
Bolboschoenus robustus
Herbert L. Mason
1945-8-16
12660 a
Solano
Grizzly Island, near Suisun Bay.
Comment
CAS-BOT-BC31351
Bolboschoenus robustus
Herbert L. Mason; Verne Grant
1947-6-26
13269
Solano
Cordelia Slough, Suisun Marsh.
Comment
UC1077118
Botrychium multifidum
Herbert L. Mason
1926-5-30
3311
El Dorado
Eagle Creek Lake Tahoe drainage
Comment
UC672624
Botrychium multifidum
H. L. Mason
1925-7-30
2196
Tuolumne
Smith Peak Trail from Mather
Comment
YM-YOSE67189
Botrychium simplex
Harry L. Mason
1938-7-7
11865
Tuolumne
MIGUEL MEADOW
1584
Comment
UC566802
Bowlesia incana
Herbert L. Mason
1929-3-24
5103
Madera
18 mi e of Madera (at junction of Yosemite Road)
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
CAS-BOT-BC420226
Boykinia occidentalis
H. L. Mason
1921-7-14
s.n.
San Mateo
Pescadero Creek on the La Honda-Pescadero Road
Comment
UC581157
Brickellia atractyloides
H. L. Mason
1935-3-29
8221
San Bernardino
w of Searles Lake; Poison Canyon, Mojave Desert
Comment
JEPS18575
Brickellia californica
Herbert L. Mason
1957-9-23
4083
Santa Barbara
Prisoners Harbor, Santa Cruz Island.
Comment
UC571017
Brickellia californica
Herbert L. Mason
1927-9-23
4083
Santa Barbara
canyon back of Prisoners (Santa Cruz Island); Santa Cruz Island
Comment
UC635223
Brodiaea elegans subsp. elegans
H. L. Mason
1923-7-12
584
Tuolumne
Hog Ranch Yosemite National Park
Comment
UC1199832
Brodiaea elegans subsp. elegans
Herbert L. Mason
1937-7-25
Tuolumne
1 mi s Lake Vernon (on trail from Beehive); Sierra Nevada, Yosemite National Park
1981
Comment
CAS-BOT-BC484501
Brodiaea minor
H. L. Mason
1927-5-9
3709
Butte
Flats of the Sacramento Valley, 12 miles west of Oroville
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
CHSC2136
Bromus madritensis subsp. rubens
P. Mason
1937-5-23
Glenn
Canal bank Ord. Roadsides.
Comment
UC1152954
Bromus tectorum
Herbert L. Mason
1963-7-4
15221
Mono
Paoha Island, Mono Lake Mono Lake; Paoha Island, Mono Lake
Comment
CAS-BOT-BC18168
Bulbostylis capillaris
H. L. Mason
1938-7-13
11946
Mariposa
Yosemite National Park. Base of El Capitan, Yosemite Valley.
1226
Comment
CAS-BOT-BC18172
Bulbostylis capillaris
H. L. Mason
1938-7-13
11946
Mariposa
Yosemite National Park. Meadow, Base of El Capitan, Yosemite Valley.
1226
Comment
GH424013
Bulbostylis capillaris
H. L. Mason
1938-7-11
11934
Unknown
Miguel Meadow, west of Hetch Hetchy
1584
Comment
RSA23338
Bulbostylis capillaris
H. L. Mason
1938-7-13
11946
Mariposa
Yosemite National Park; Base of El Capitan, Yosemite Valley
1227
Comment
UC673291
Cakile edentula
Herbert L. Mason
1924-11-16
1145
Marin
Stinson Beach, Willow Camp Stinson Beach; , Willow Camp
Comment
UC964761
Cakile maritima
Herbert L. Mason
1944-3-17
San Mateo
Moss Beach
Comment
UCD57206
Calamagrostis canadensis
H. L. Mason
1958-8-6
14862
Tuolumne
Yosemite National Park, NW of Hetch-Hetchy, Swamp Lake meadow.
Comment
UCD57543
Calamagrostis purpurascens
H. L. Mason
1938-7-28
12407
Tuolumne
Yosemite National Park, north of Tiltill Mtn., Macomb Ridge.
3017
Comment
UC936143
Calendula arvensis
Herbert L. Mason
1948-3-14
Amador
highway to Jackson, Ione, on a hill near old mines
Comment
GH363408
California macrophylla
H. L. Mason
1929-4-25
5209
Unknown
Briones Road to Antioch
Comment
UC570778
Callitriche
H. L. Mason
1932-3-1
6802
Marin
Inverness Ridge
Comment
UC570771
Callitriche
H. L. Mason
1932-3-1
6804
Marin
w side Olema (to Bolinas Road)
Comment
UC1101528
Callitriche hermaphroditica
Herbert L. Mason and Verne Grant
1947-7-10
13348
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
UC570775
Callitriche longipedunculata
H. L. Mason
Apr 1930
5545
Calaveras
2 miles east of Valley Springs
Comment
UC570759
Callitriche marginata
H. L. Mason
1927-4-23
3697
San Mateo
Pescadero Creek near Bloomquist's Mill
Comment
UC570761
Callitriche marginata
H. L. Mason
1932-3-16
6810
Contra Costa
At east edge Walnut Creek, along S.P. Railroad track
Comment
UC570776
Callitriche marginata
H. L. Mason
Apr 1930
5544
Calaveras
6 miles west of Valley Springs
Comment
UC1101517
Callitriche verna
Herbert L. Mason and Verne Grant
1947-7-12
13383
Modoc
several mi s Alturas (by Jones' Lane, off Highway 395)
Comment
UC1076512
Calocedrus decurrens
H. L. Mason
1923-7-13
589
Tuolumne
Hog.Ranch (Mather) Sierra Nevada Mountains, Yosemite National Park
1432
Comment
UC672158
Calochortus albus
Herbert L. Mason
1928-5-3
4480
Amador
s of Clark Creek; Cosumnes River
Comment
JROH4615
Calochortus argillosus
H. L. Mason
1921-6-4
s.n.
San Mateo
Jasper Ridge Biological Preserve, Stanford University
Comment
UC1199840
Calochortus clavatus
Herbert L. Mason
1940-5-4
12263
Merced
2 mi n Ortegalita Peak; Inner South Coast Ranges, Ortegalita Canyon
396
Comment
UC1056424
Calochortus nudus
Herbert L. Mason
1936-7-12
11224
Mariposa
Glacier Point road Peregoy Meadow
2255
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
UC672140
Calochortus venustus
Herbert L. Mason
1923-7-12
585
Tuolumne
near Mather; Yosemite National Park, Hog Ranch
Comment
UC1111591
Caltha biflora
Herbert L. Mason
1941-7-7
12504
Madera
Bog just south of the Givens Lake trail junction, Yosemite National Park, Sierra Nevada.
2865
Comment
UC912590
Calycadenia multiglandulosa
Herbert 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
UC635501
Calycanthus occidentalis
H. L. Mason
1927-5-10
3718
Butte
near Oroville (Coal Creek, n side of Table Mountain); Table Mountain, Coal Creek
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
UC1540432
Calyptridium quadripetalum
Herbert L. Mason
1936-4-26
11097 a
Lake
16 mi ne of Clear Lake (Bartlett Springs); Bartlett Springs
792
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
UC672139
Camassia quamash subsp. breviflora
Herbert L. Mason
1926-5-29
3300
Nevada
Truckee River; Sierra Nevada, Truckee River
Comment
UC635287
Camissonia campestris subsp. campestris
H. L. Mason
1929-3-31
5153
Contra Costa
Antioch San Joaquin River (sand dike along river)
Comment
POM257265
Camissonia campestris subsp. campestris
H. L. Mason
1929-3-23
5089
Tulare
Three miles above Springville, Middle Tule River.
Comment
POM257262
Camissonia claviformis subsp. claviformis
H. L. Mason
1926-4-27
3038
Los Angeles
Rock Creek.
Comment
UC635395
Camissonia strigulosa
H. L. Mason
1926-6-6
3372
Santa Cruz
grain fields about Felton
Comment
CAS-BOT-BC191091
Camissonia tanacetifolia subsp. tanacetifolia
Herbert Louis Mason
1947-8-13
13523
Modoc
N side of F Reservoir, N of Canby.
Comment
UC635398
Camissoniopsis cheiranthifolia subsp. cheiranthifolia
Herbert L. Mason
1927-10-4
4118
Santa Cruz
mouth of Waddell Creek Ano Nuevo Pt.
Comment
UC635407
Camissoniopsis intermedia
H. L. Mason
1929-3-15
5048
Contra Costa
Nortonville
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
UC1178942
Campanula exigua
Herbert L. Mason
1940-5-5
12281
San Benito
about 20 mi se Paicines; Panoche Pass
Comment
SEINET10463136
Campanula prenanthoides
Mason
1925-8-11
Mason 2218
Tuolumne
BIG OAK FLAT RD TO TUOLUMNE GROVE
Comment
UC971910
Campanula scouleri
Herbert L. Mason
1950-7-15
14059
Trinity
summit of grade Scott Mountain (on hillslopes)
Comment
CAS-BOT-BC76300
Canbya candida
Herbert L. Mason
1935-4-30
10006
Kern
Walker Pass.
Comment
UC634893
Canbya candida
Herbert L. Mason
1926-4-26
3020
Los Angeles
Little Rock Creek Mojave Desert
Comment
SEINET10904746
Canbya candida
Mason
1935-4-30
Mason 10006
Kern
Walker pass, southern sierra nevada.
Comment
POM312901
Cannabis sativa
H. L. Mason, Verne Grant
1946-8-21
13058
San Joaquin
West of Stockton on Borden Hwy; Marsh Plant Survey.
Comment
UC1192294
Cannabis sativa
Herbert L. Mason, Verne Grant
1946-8-21
13058
San Joaquin
w of Stockton (on Borden Highway)
Comment
UC673298
Cardamine californica
Herbert L. Mason
1925-1-18
1180
Marin
hills n San Rafael; hills n of San Rafael
Comment
UC965608
Carex angustata
Herbert L. Mason
1952-7-11
14321
Nevada
1 mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
CHSC2105
Carex barbarae
P. Mason
1937-5-15
Butte
Fish wheel on Butte Creek.
91
Comment
UC1100429
Carex barbarae
Herbert L. Mason, Verne Grant
1946-9-4
13100
Sutter
Butte Sink, Colusa Gun Club
Comment
CAS-BOT-BC110208
Carex buxbaumii
H. L. Mason
1938-7-11
11942
Tuolumne
Yosemite National Park. South island in Swamp Lake, west of Hetch Hetchy.
1584
Comment
UC599114
Carex buxbaumii
H. L. Mason
1938-7-11
11942
Tuolumne
w Hetch Hetchy (South island in Swamp Lake); Yosemite National Park, Swamp Lake, South island
1584
Comment
UC599133
Carex buxbaumii
H. L. Mason
1938-7-9
11890
Tuolumne
w Hetch Hetchy; Yosemite National Park, Swamp Lake
1584
Comment
YM-YOSE65389
Carex buxbaumii
H. L. Mason
1938-7-11
11942
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND
Comment
UC714228
Carex congdonii
H. L. Mason
1936-7-22
11267
Tuolumne
w spur of Ragged Peak Sierra Nevada, Conness Range, Ragged Peak
Comment
RSA23336
Carex cusickii
H. L. Mason
1938-7-10
11923
Tuolumne
South island in Swamp Lake, west of Hetch Hetchy,
1585
Comment
YM-YOSE65410
Carex cusickii
H. L. Mason
1938-7-10
11923
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND
1584
Comment
UC965606
Carex douglasii
Herbert L. Mason
1952-7-19
14433
Nevada
meadow opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC599113
Carex echinata subsp. echinata
H. L. Mason
1938-7-10
11922
Tuolumne
w Hetch Hetchy (south island in Swamp Lake); Yosemite National Park
1584
Comment
UCD140298
Carex echinata subsp. phyllomanica
Herbert L. Mason
1946-5-18
12760
Mendocino
east of Fort Bragg.
Comment
CAS-BOT-BC20153
Carex feta
H. L. Mason
1938-7-9
11893
Tuolumne
Yosemite National Park. Swamp Lake, west of Hetch Hetchy.
1584
Comment
UC1056298
Carex feta
Herbert L. Mason
1939-7-11
12116
Tuolumne
marsh 1/2 mi below Swamp Lake
Comment
UCD140311
Carex feta
Herbert L. Mason; Lawrence W. Reinecke
1937-7-21
11561
Tuolumne
Miguel Meadows, just northwest of Hetch Hetchy Dam, Yosemite National Park.
1524
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
YM-YOSE65445
Carex heteroneura
H. L. Mason
1938-7-30
12056
Tuolumne
SOUTH END TILTILL MTN.
2590
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
CAS-BOT-BC31525
Carex limosa
Herbert L. Mason
1952-8-16
14484
Nevada
Meadow opposite Univ of CA Trout Laboratory. Sage Hen Creek.
1981
Comment
UC599140
Carex limosa
H. L. Mason
1938-7-10
11906
Tuolumne
w Hetch Hetchy; Yosemite National Park, Swamp Lake, South Island
1584
Comment
UC965611
Carex limosa
Herbert L. Mason
1952-8-16
14484
Nevada
meadow opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC1100496
Carex nebrascensis
Herbert L. Mason, Verne Grant
1947-7-10
13354
Modoc
1/4 mi w Dorris Reservoir (2 mi e of Alturas)
Comment
SEINET8055413
Carex nebrascensis
H. L. Mason, V. Grant
1947-7-12
13435
Modoc
Corporation Ranch Headquarters, N of Likely
Comment
UC1100494
Carex nebrascensis
Herbert L. Mason, Verne Grant
1947-8-8
13457
Modoc
n Big Sage Reservoir (nw of Alturas); Ingalls Swamp
Comment
CAS-BOT-BC119358
Carex obnupta
Herbert L. Mason
1946-5-18
12761
Mendocino
Sphagnum bog E of Fort Bragg.
Comment
UC1100485
Carex obnupta
Herbert L. Mason
1949-7-7
14026
Santa Clara
Mouth of Gazos Creek Gazos Creek
Comment Read comments Sep 19 2021
POM313115
Carex praegracilis
H. L. Mason, Verne Grant
1947-7-12
13439
Modoc
Corporation Ranch Headquarters, north of Likely.
Comment
CAS-BOT-BC118797
Carex preslii
H. L. Mason
1938-7-30
12059
Tuolumne
S end of Tiltill Mountain.
2590
Comment
YM-YOSE65519
Carex preslii
H. L. Mason
1938-7-30
12059
Tuolumne
SOUTH END TILTILL MTN.
2590
Comment
UC599119
Carex raynoldsii
H. L. Mason
1938-7-30
12057
Tuolumne
s end Tiltill Mountain; Yosemite National Park
2590
Comment
UC1100465
Carex simulata
Herbert L. Mason
1947-8-13
13538 a
Modoc
n Canby (ne side of F reservoir)
Comment
UC965605
Carex simulata
Herbert L. Mason
1952-8-16
14479
Nevada
meadow opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC599120
Carex specifica
H. L. Mason
1938-7-30
12058
Tuolumne
Tiltill Mountain, S end Yosemite Natonal Park
2590
Comment
CAS-BOT-BC115934
Carex subfusca
Herbert L. Mason
1952-8-16
14488
Nevada
Meadow opposite University of CA Trout Laboratory, Sage Hen Creek.
1981
Comment
UC1100569
Carex vesicaria
Herbert L. Mason, Lawrence W. Reinecke
1937-7-22
11572
Tuolumne
S. Miguel Meadows (Swamp Lakes, in the hills west of Hetch Hetchy dam.); Yosemite National Park
1584
Comment
UC1102959
Carex vesicaria
Herbert L. Mason
1958-8-9
14887
Tuolumne
w Hetch Hetchy Dam (Swamp Lake); Sierra Nevada, Yosemite National Park
1584
Comment
UC1106322
Carex vesicaria
Herbert L. Mason, B. Fuller, H. Whisler
1958-7-13
19
Nevada
1 mi w Unniversity of California Trout Laboratory (peat meadow back of stream, 12 mi n of Truckee); Sierra Nevada, Sage Hen Creek
1981
Comment
UC599134
Carex vesicaria
H. L. Mason
1938-7-9
11889
Tuolumne
w Hetch Hetchy (Swamp Lake); Yosemite National Park
1584
Comment
YM-YOSE65551
Carex vesicaria
H. L. Mason
1938-7-9
11889
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SWAMP LAKE WEST OF HETCH HETCHY
1584
Comment
UC599122
Carex whitneyi
H. L. Mason
1938-7-30
12055
Tuolumne
South end of Tiltill Mountain
2590
Comment
CAS-BOT-BC59738
Cassiope mertensiana
H. L. Mason
1928-7-5
4877
Mono
Tioga Mines.
Comment
CAS-BOT-BC249092
Castilleja affinis
H. L. Mason
1921-5-14
s.n.
Alameda
Haywards [Hayward]
Comment
UC1081503
Castilleja applegatei subsp. martinii
H. L. Mason
1926-5-1
3162
San Diego
Palomar Mountain
Comment
UC673459
Castilleja attenuata
H. L. Mason
1926-3-21
2760
Lake
between Middletown and Mount St. Helena; Toll House Canyon
Comment
UC673438
Castilleja densiflora subsp. densiflora
H. L. Mason
1928-4-25
4368
San Francisco
Hunter's Point
Comment
UC1077125
Castilleja exserta subsp. exserta
Herbert L. Mason
1938-5-7
11788
Santa Barbara
Burton Mesa
Comment
UC1081507
Castilleja foliolosa
H. L. Mason
1925-4-25
2904
Orange
5 mi s Laguna
Comment
JEPS23180
Castilleja lacera
Herbert L. Mason
1940-7-6
12318
Tuolumne
w of Hetch Hetchy Dam; Yosemite National Park, Miguel Meadows
1584
Comment
UC673465
Castilleja lacera
H. L. Mason
1928-5-4
4507
El Dorado
4 mi n Shingle Spring; Greene Valley
Comment
UC673468
Castilleja lacera
H. L. Mason
1923-7-26
653
Tuolumne
Hog Ranch Hog Ranch, Mather; Mather
Comment
UC1039789
Castilleja miniata
H. L. Mason
1925-7-29
2186
Tuolumne
Hog Ranch, Mather; Mather
Comment
UC1275796
Castilleja miniata
Herbert L. Mason
1963-8-9
15231
Mono
near Mono Lake (w Mono Marsh); Mono Marsh
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
UC1178847
Castilleja nana
Herbert L. Mason
1938-7-22
11980
Tuolumne
n of Hetch Hetchy (Vernon Lake Trail); Sierra Nevada, Yosemite National Park
2072
Comment
UC712178
Castilleja nana
Herbert L. Mason
1936-7-31
11454
Mono
e of Saddlebag Lake (Tioga Crest); Sierra Nevada, Tioga Crest
Comment
UC712358
Castilleja nana
Herbert L. Mason
1936-7-23
11287
Tuolumne
Mount Conness
3505
Comment
GH365525
Castilleja pilosa
H. L. Mason
1936-7-23
11287
Unknown
Mount Conness
3505
Comment
UC673466
Castilleja rubicundula subsp. lithospermoides
H. L. Mason
1928-4-28
4408
Marin
Tiburon Peninsula
Comment
UC592154
Caulanthus amplexicaulis
H. L. Mason
1927-6-14
3765
San Bernardino
San Antonio Canyon San Gabriel Mountains, San Antonio Canyon
1889
Comment
UC964768
Caulanthus coulteri
Herbert L. Mason
1938-4-14
11702
Tulare
4 mi e Exeter (Rocky Hill); e of Exeter
Comment
GH379093
Caulanthus coulteri var. lemmonii
H. L. Mason
1952-4-6
14202
Unknown
Temblor Range east of Cholame
Comment
UC1051467
Caulanthus coulteri var. lemmonii
Herbert L. Mason
1952-4-6
14202
San Luis Obispo
Temblor Range e Cholame; Temblor Range e of Cholame
Comment
UC639098
Caulanthus inflatus
H. L. Mason
1932-4-2
6896
Kern
3 mi w Muroc (Mohave Desert); , w of Muroc
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
UC634616
Ceanothus dentatus
Herbert L. Mason
1923-6-23
557
Monterey
Point Lobos--Carmel
Comment
UC634577
Ceanothus griseus
Herbert L. Mason
1927-7-30
3990
Monterey
Cypress Point
Comment
SEINET11191707
Ceanothus impressus
H. Mason
1951-3-31
s.n.
Alameda
Berkeley.
Comment
UC635515
Ceanothus incanus
H. L. Mason
1926-6-23
561
Monterey
Cypress Point Carmel
Comment
CAS-BOT-BC51016
Ceanothus integerrimus
Herbert L. Mason
1923-7-14
596 a
Tuolumne
Mather
Comment
UC635527
Ceanothus integerrimus
Herbert L. Mason
1925-6-27
2125
Tuolumne
Mather (Hog Ranch)
Comment
CAS-BOT-BC51727
Ceanothus lemmonii
H. L. Mason
1927-5-19
3714
Butte
Cherokee mine, Table Mountain Northeast of Oroville
Comment
GH349712
Ceanothus lemmonii
H. L. Mason
1926-5-29
3284
Unknown
Rattlesnake Creek five miles south of Grass Valley
609
Comment
UC634627
Ceanothus lemmonii
H. L. Mason
1925-12-31
2575
Lake
Bartlett Mountain
Comment
UC634987
Ceanothus lemmonii
H. L. Mason
1927-5-19
3714
Butte
ne Oroville (Cherokee Mine.); Table Mt.
Comment
UC634615
Ceanothus leucodermis
H. L. Mason
1926-4-11
2856
Alameda
Rancho Repose, Mount Hamilton Range.
Comment
CAS-BOT-BC51478
Ceanothus oliganthus
Herbert L. Mason
1926-4-30
3155
San Diego
Palomar Mt.
Comment
UC912387
Ceanothus palmeri
Herbert L. Mason
1928-5-3
4488
El Dorado
at mouth of Clark Creek near bridge Cosumnes River; Cosumnes River at mouth of Clark Creek
Comment
UC634611
Ceanothus papillosus
Herbert L. Mason
1923-6-19
519
Ventura
Matileja Mt. Matileja Mt. (Ocean view trail)
Comment
CAS-BOT-BC63335
Ceanothus prostratus
Herbert L. Mason
1924-6-16
1046
Plumas
Graeagle.
Comment
GH425153
Ceanothus purpureus
H. L. Mason
1931-3-8
Unknown
Betw. Santa Rosa and Guerneville, 8 mi. w. of Santa Rosa, on ridge beyond slough, near Vine Hill School
Comment
UC525848
Ceanothus thyrsiflorus
Herbert L. Mason
1934-4-1
San Luis Obispo
twenty mi n Cambria; n 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
UC634853
Ceanothus velutinus
Herbert L. Mason
1926-3-6
2699
Marin
Corte Madera Ridge , Corte Madera Ridge (Mt. Tamalpais)
Comment
UC1191678
Centaurium exaltatum
Herbert L. Mason
1947-8-15
13553
Modoc
e side Goose Lake (on Willow Ranch); Mouth of Crane Creek
Comment
UC566918
Centaurium venustum
H. L. Mason
1926-4-30
3126
Riverside
Pala Grade Temescal Canyon
Comment
UC566916
Centaurium venustum
H. L. Mason
1923-7-15
601
Tuolumne
Salt Log Meadow Sierra Nevada Mountains, Yosemite National Park
Comment
UC1101314
Ceratophyllum demersum
Herbert L. Mason
1946-7-27
12955
Lake
Upper Lake - Lakeport road
Comment
UC1101386
Ceratophyllum demersum
Herbert L. Mason and Verne Grant
1946-8-14
13044
Butte
Butte Sink
Comment
UC635511
Ceratophyllum demersum
H. L. Mason
1929-9-9
5421
San Joaquin
Holt
Comment
UC555651
Cercocarpus betuloides var. betuloides
H. L. Mason
1929-6-2
5359
Kern
Tejon Pass 30 mi from Bakersfield; Tehachapi Mountains, Tejon Pass
Comment
UC555658
Cercocarpus betuloides var. betuloides
Herbert L. Mason
1923-6-17
467
Santa Barbara
Mountain Drive
Comment
UC566687
Chaenactis fremontii
H. L. Mason
1928-3-11
4328
Riverside
near Indio
Comment
UC565564
Chaenactis glabriuscula var. glabriuscula
H. L. Mason
1929-3-31
5157
Contra Costa
Antioch, sand dikes along San Joaquin River San Joaquin River, Antioch
Comment
JEPS34165
Chaenactis glabriuscula var. heterocarpha
H. L. Mason
1929-4-28
Lake
Hopland Grade
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
CAS-BOT-BC277771
Chaenactis nevadensis
Herbert L. Mason
1936-7-6
11141
Mariposa
Sierra Nevada, Yosemite National Park. Hetch Hetchy Trail west of Yosemite Creek
2286
Comment
UC565573
Chaenactis stevioides
H. L. Mason
1932-4-1
6875
Kern
road from Roosevelt to Muroc Muroc; Mojave Desert
Comment
UC570799
Chamaesyce albomarginata
H. L. Mason
1930-4-20
5562
Kern
Tehachapi Mtns, Caliente Creek
Comment
UC570789
Chamaesyce polycarpa
H. L. Mason
1926-4-25
2912
Orange
5 mi s Laguna
Comment
UC635594
Chamaesyce polycarpa
H. L. Mason
1925-4-18
1495
San Diego
hills near San Diego (Navy fuel dock)
Comment
UC1192287
Chamaesyce serpyllifolia
Herbert L. Mason and S. Galen Smith
1948-8-9
8281
Merced
ca 10 mi w summit of Pacheco Pass; Pacheco Creek
Comment
UC1076335
Cheilanthes gracillima
Herbert L. Mason
1925-2-1
1221
Marin
Mt Tamalpais
Comment
UC1076345
Cheilanthes intertexta
Herbert L. Mason
1926-1-1
2583
Lake
Upper Lake to Elk Mt
Comment
UC1076555
Chenopodium ambrosioides
Herbert L. Mason
1928-9-30
4963
San Joaquin
near Holt; San Joaquin delta
Comment
UC965592
Chenopodium atrovirens
Herbert L. Mason
1952-7-19
14407
Nevada
meadow opposite University of California Trout Laboratory; Sage Hen Creek
1981
Comment
UC1093855
Chenopodium botrys
Herbert L. Mason
1925-8-6
2210
Tuolumne
Mather; on railroad balast
Comment
UC1199816
Chenopodium californicum
Herbert L. Mason
1929-3-31
5158
Contra Costa
Antioch Sacramento River
Comment
UC1191343
Chenopodium glaucum
Herbert L. Mason
1947-8-15
13554
Modoc
Crane Creek Goose Lake, Willow Ranch (mouth, e side of lake)
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
UC1093852
Chenopodium pumilio
Herbert L. Mason
1933-9-2
7286
Amador
Silver Lake Sierra Nevada
Comment
UC1191335
Chenopodium strictum var. glaucophyllum
Herbert L. Mason and Verne Grant
1946-8-7
12978
Colusa
8 mi n Colusa; Butte Sink
Comment
GH362630
Chimaphila umbellata
H. L. Mason
1924-6-18
1054
Unknown
road between Graeagle and Gold Lake
Comment
CAS-BOT-BC191284
Chorizanthe fimbriata var. fimbriata
H. L. Mason
1926-4-30
3127
San Diego
Tenescal Canyon, Pala Grande (to Palomar Mountain)
Comment
UC912476
Chorizanthe membranacea
H. L. Mason
1934-4-30
8104
Napa
5 mi s Monticello (tributary of Putah Creek); tributary of Putah Creek
Comment
SD47975
Chorizanthe obovata
Herbert L Mason
1946-6-7
12822
Santa Barbara
Mono Flat, 0.5 mile west of Camuesa
Comment
CAS-BOT-BC257216
Chorizanthe procumbens
H. L. Mason
1936-4-30
3129
San Diego
Tenescal [Temescal] Canyon along Pala Grade toward Palomar Mountain
Comment
UC635049
Chorizanthe pungens var. pungens
Herbert L. Mason
1923-6-23
565
Monterey
Del Monte
Comment
UC635062
Chorizanthe staticoides
Herbert L. Mason
1926-4-26
2961
Los Angeles
4 mi w Saugas; w of Saugas
Comment
UC635060
Chorizanthe staticoides
Herbert L. Mason
1923-6-22
531
San Luis Obispo
just above San Luis Obispo (Camp Fremont); just above San Luis Obispo, Camp Fremont
Comment
UC1076086
Chrysolepis sempervirens
Herbert L. Mason
1929-10-4
5474
El Dorado
above Glen Alpine; Fallen Leaf Lake
Comment
CAS-BOT-BC420343
Chrysosplenium glechomifolium
H. L. Mason
1929-5-10
5286
Del Norte
just N of Crescent City
Comment
UC635388
Chylismia cardiophylla subsp. cardiophylla
H. L. Mason
1928-3-10
4205
Riverside
Hidden Springs Coachella Mountains
Comment
UC604430
Cicendia quadrangularis
H. L. Mason
1938-5-7
11773
Santa Barbara
nw of Lompoc (Burton Mesa); Burton Mesa
Comment
UC673484
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
UC1191961
Cicuta maculata var. bolanderi
Herbert L. Mason, Verne Grant
1947-6-26
13270
Solano
Suisun Marsh, Cordelia Slough Suisun Marsh; , Cordelia Slough
Comment
UC634668
Circaea alpina subsp. pacifica
H. L. Mason
1925-7-30
2191
Tuolumne
Smith Peak Trail from Mather
Comment
UC1093963
Cirsium occidentale var. californicum
Herbert L. Mason
1946-6-7
12831
Santa Barbara
s of Little Pine Mountain (between Camuesa Creek and Oso Creek)
762
Comment
UC912552
Cirsium occidentale var. californicum
Herbert L. Mason
1932-4-24
6975
Calaveras
Mokulumne River Bridge Mokulumne River, Comanche
Comment
UC632833
Cirsium occidentale var. californicum
H. L. Mason
1936-5-15
11122
Mariposa
road from Coulterville to Bagby
Comment Read comments Aug 5 2008
CAS-BOT-BC169770
Cistanthe quadripetala
Herbert L. Mason
1935-5-30
10010
Napa
4 miles N of Knoxville on the Monticello - Lower lake Road
Comment
GH376994
Cistanthe quadripetala
H. L. Mason
1935-5-30
10010
Unknown
Four miles north of Knoxville on the Monticello-Lower Lake Road
Comment
UC634707
Clarkia affinis
H. L. Mason
1932-4-17
6947
Santa Clara
Uvas-Almaden Road
Comment
POM257246
Clarkia amoena subsp. amoena
H. L. Mason
1928-7-10
4881
Marin
Along Tomales Bay, Millerton.
Comment
POM257250
Clarkia arcuata
H. L. Mason
1932-4-25
6997
Amador
Vorhees School, near Dry Creek
Comment
POM257280
Clarkia breweri
H. L. Mason
1928-5-6
4557
Alameda
Cedar Mountain, Mount Hamilton Range.
Comment
UC634699
Clarkia cylindrica subsp. cylindrica
H. L. Mason
1929-6-2
5356
Kern
30 mi from Bakersfield; Tehachapi Mountains, Tejon Pass
Comment
POM257244
Clarkia purpurea subsp. purpurea
H. L. Mason
1928-4-26
4379
Contra Costa
Around Berkeley and Oakland.
Comment
CAS-BOT-BC163824
Clarkia purpurea subsp. quadrivulnera
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
CAS-BOT-BC164562
Clarkia purpurea subsp. viminea
H. L. Mason
1921-7-3
s.n.
San Mateo
Pescadero - La Honda Road
Comment
POM257281
Clarkia unguiculata
H. L. Mason
1926-5-26
3250
Alameda
Bluffs near Sunol, Niles Canyon.
Comment
POM257253
Clarkia williamsonii
H. L. Mason
1925-7-4
2149
Tuolumne
Mather.
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
CAS-BOT-BC439161
Claytonia exigua subsp. exigua
H. L. Mason
1925-3-7
1281
Alameda
Junction 1/2 mile southwest of Sunol
Comment
CAS-BOT-BC229128
Claytonia megarhiza
Herbert L. Mason
1935-7-29
s.n.
Mariposa
Yosemite National Park. Bernice Lake
Comment
UC1056449
Claytonia rubra subsp. rubra
Herbert L. Mason
1936-7-12
11230
Mariposa
Glacier Point; Sierra Nevada, Yosemite National Park, Peregoy Meadow
2255
Comment
UC635490
Claytonia sibirica
H. L. Mason
1928-10-21
5004
Mendocino
n of Fort Bragg (Pudding Creek); Pudding Creek
Comment
UC635492
Claytonia sibirica
H. L. Mason
1926-2-21
2655
Marin
road from Inverness to Point Reyes Lighthouse (near summit of grade)
Comment
CAS-BOT-BC443947
Claytonia sibirica
H. L. Mason
1926-2-21
2655
Marin
Road from Inverness to Point Reyes Lighthouse
Comment
UC581160
Cleomella obtusifolia
H. L. Mason
1935-3-29
8234
San Bernardino
w side Searles Lake; Mojave Desert
Comment
UC545818
Collinsia callosa
Herbert L. Mason
1935-4-29
10002
Kern
2 mi w Walker Pass
Comment
UC1093961
Collinsia childii
Herbert L. Mason
1946-6-8
12863
Santa Barbara
n side Big Pine Mtn (headwaters of the Upper Sisquoc River); , San Rafael Mtns, Upper Sisquoc River
1920
Comment
UC632787
Collinsia greenei
H. L. Mason
1936-4-26
11094
Lake
e side Bartlett Mtn; Inner North Coast Ranges
Comment
UC604424
Collinsia heterophylla
H. L. Mason
1938-5-10
11814
Tulare
near Auckland Ranch on General Grant National Park Road sw of Badger; General Grant National Park Road
457
Comment
UC672460
Collinsia parviflora
H. L. Mason
1929-5-9
5271
Mendocino
5 mi w of Laytonville
Comment
UC1076032
Collomia diversifolia
Herbert L. Mason
1947-5-18
14793
Tehama
w Paskenta; Paskenta Grade
Comment
UC1178932
Collomia diversifolia
Herbert L. Mason
1953-4-18
14152
Lake
serpentine ridge 4.5 mi n Middletown (near Anderson's Springs)
Comment
UC1191142
Collomia diversifolia
Herbert L. Mason
1953-6-8
14522
Lake
Black Oak Villa Butts Canyon
Comment
SEINET8729290
Collomia diversifolia
Herbert L. Mason
1948-1
13570
Napa
Near head of Butts Canyon
Comment
UC1191143
Collomia heterophylla
Herbert L. Mason
1953-6-8
14521
Lake
Black Oak Villa Butts Canyon
Comment
UC965590
Collomia linearis
Herbert L. Mason
1952-7-18
14396
Nevada
upstream from University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
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
UC629725
Collomia rawsoniana
H. L. Mason
1938-7-16
11954
Madera
three mi e South Fork (on a tributary to Whisky Creek); Cascadel Ranch
1127
Comment
UC1191642
Collomia tinctoria
Herbert L. Mason
1948-7-18
13606 b
Siskiyou
Grass Lake
Comment
UC907800
Collomia tinctoria
Herbert L. Mason
1946-6-8
12862
Santa Barbara
n side of mountain San Rafael Mountains, Big Pine Mountain
Comment
CAS-BOT-BC157359
Comarum palustre
Herbert L. Mason
1940-7-25
12331
El Dorado
Grass Lake, Luther Pass
2377
Comment
SBBG72464
Comarum palustre
H. L. Mason
1940-7-25
12331
El Dorado
Grass lake, Luther Pass
2377
Comment
UCD113216
Comarum palustre
H. L. Mason
1940-7-25
12331
El Dorado
Grass Lake, Luther Pass.
2377
Comment
RSA114062
Convolvulus simulans
H. L. Mason
1952-4-27
14282
San Benito
About 3 miles from mouth of San Carlos Canyon
Comment
UC1093962
Convolvulus simulans
Herbert L. Mason
1946-6-7
12833
Santa Barbara
ridge between Camuesa Creek and Oso Creek (s of Little Pine Mt.)
762
Comment
UCD126183
Convolvulus simulans
Herbert L. Mason
1946-6-7
12833
Santa Barbara
between Camuesa Creek and Oso Creek south of Little Pine Mountain, Santa Barbara.
762
Comment
UC672179
Conyza canadensis
H. L. Mason
1927-10-4
4112 a
Alameda
University of California Berkeley Campus
Comment
UC673552
Corallorhiza striata
H. L. Mason
1926-5-31
3347
Calaveras
Calaveras Big Trees
Comment
POM312576
Cordylanthus mollis subsp. hispidus
H. L. Mason, S. Galen Smith
1948-8-9
8306
Merced
Along old Santa Fe Grade, 2 miles north of Dos Palos
Comment
UC672487
Cordylanthus tenuis subsp. tenuis
H. L. Mason
1925-7-30
2193
Tuolumne
ne Mather (Smith Peak Trail)
Comment
CAS-BOT-BC287722
Coreopsis bigelovii
Herbert L. Mason
1932-4-1
6882
Kern
5 miles S of Muroc, Mojave Desert
Comment
UC566769
Coreopsis bigelovii
Herbert L. Mason
1932-4-1
6882
Kern
5 mi s Muroc; Mojave Desert
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
UC566774
Coreopsis californica var. californica
Herbert L. Mason
1932-4-1
6872
Los Angeles
1 mi e Lancaster; Mojave Desert
Comment
UC545811
Coreopsis stillmanii
Herbert L. Mason
1936-3-21
11019
Tuolumne
4 mi n Coulterville
Comment
POM289573
Coreopsis stillmanii
H. L. Mason
1936-3-21
11019
Tuolumne
4 miles north of Coulterville
Comment
CAS-BOT-BC101399
Corethrogyne filaginifolia
Herbert L. Mason
1928-4-25
4365
San Francisco
[Hunter's] Hunters Point
Comment
JEPS15881
Corethrogyne filaginifolia
Herbert L. Mason
1927-9-24
4092
Santa Barbara
about West Ranch; Santa Cruz Island
Comment
JEPS15883
Corethrogyne filaginifolia
Herbert L. Mason
1927-9-24
4090
Santa Barbara
about West Ranch; Santa Cruz Island
Comment
UC1093911
Corethrogyne filaginifolia
Herbert L. Mason
1936-9-13
11529
Santa Clara
w Madrone Station
Comment
UC672301
Corethrogyne filaginifolia
H. L. Mason
1927-9-24
4092
Santa Barbara
slopes about West Ranch; Santa Cruz Island
Comment
UC634827
Cornus glabrata
H. L. Mason
1929-10-12
5486
San Luis Obispo
4.3 mi. w. Atascadero (along Atascadero Creek)
Comment
CAS-BOT-BC212020
Cornus nuttallii
H. L. Mason
1928-7-14
4897
Humboldt
East fork of Eel River near Garberville
Comment
UC634647
Cornus nuttallii
H. L. Mason
1925-7-20
2200
Tuolumne
Smith Peak Trail from Mather; Yosemite Nat'l Park
Comment
UC634636
Cornus sericea subsp. sericea
H. L. Mason
1924-6-19
1076
Plumas
margin of Bear lake
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
UCD130902
Cotula coronopifolia
Herbert L. Mason; Verne Grant
1947-6-26
13241
Solano
Cordelia Slough, Suisun Marsh.
Comment
UC1192139
Cotula coronopifolia
herbert l. mason, malcolm a. nobs
1949-4-27
724
Solano
Suisun State Game Refuge
Comment
UC571142
Crassula tillaea
Herbert L. Mason
1927-4-23
3690
San Mateo
along roadside between La Honda and Pescadero Creek
Comment
UC602783
Crepis nana
H. L. Mason
1936-7-30
11451
Mono
Excelsior Peak
Comment
UC566624
Crocidium multicaule
H. L. Mason
1932-3-6
6809
Alameda
20 mi s Livermore; Mount Hamilton Range, Arroyo Mocho
Comment
SACT000807
Crypsis niliacea
Herbert Mason
1945-7-11
Colusa
Alkali Plains 3 miles above Colusa
Comment
SEINET200145
Crypsis schoenoides
H. L. Mason
1945-9-18
12706
Sutter
Overflow lands of Sutter By-pass near bridge on Yuba City-Knight's Landing highway.
Comment
UCD59826
Crypsis schoenoides
H. L. Mason
1945-9-19
12729
Butte
Gray Lodge Game Refuge, northwest of Pennington.
Comment
UC573091
Cryptantha barbigera
Herbert L. Mason
1928-3-10
4228
Riverside
Hidden Springs Canyon Coachella Mts.
Comment
UC573069
Cryptantha circumscissa
H. L. Mason
1932-4-1
6868
Los Angeles
1 mi e Lancaster; Mojave Desert
Comment
UC573074
Cryptantha clevelandii
H. L. Mason
1923-6-15
400
Santa Barbara
Harris Grade La Purissima Ridge
Comment
UC573096
Cryptantha flaccida
H. L. Mason
1926-4-11
2853
Alameda
Cedar Mountains and Rancho Repose Mount Hamilton Range
Comment
GH420039
Cryptantha holoptera
H. L. Mason
1928-3-10
4232
Unknown
Hidden Springs Canyon, Coachella Mts.
Comment
UC573152
Cryptantha leiocarpa
Herbert L. Mason
1926-4-18
2874
San Francisco
s of Cliff House; San Francisco
Comment
UC573098
Cryptantha nevadensis
H. L. Mason
1926-4-28
3107
San Bernardino
Box S Ranch
Comment
UC573128
Cryptantha virginensis
H. L. Mason
1934-3-28
8027
Inyo
Near summit of Panamint Range, Townsend (Towne's ?) Pass.
Comment
UC1093684
Cryptogramma acrostichoides
Herbert L. Mason
1926-7-12
2894
Plumas
Mt Elwell
Comment
UC1093851
Cupressus arizonica subsp. nevadensis
Herbert L. Mason
1956-3-29
14662
Kern
slopes s Bodfish; Piute Mountains
1066
Comment
UC1179020
Cupressus goveniana subsp. pygmaea
Herbert L. Mason
1928-10-21
4995
Mendocino
Fort Bragg
Comment
UC665713
Cupressus goveniana subsp. pygmaea
Herbert L. Mason
1934-9-3
8147
Mendocino
white plains 3 mi e of Mendocino City
Comment
UC1076384
Cupressus lawsoniana
H. L. Mason
1932-7-21
7111
Humboldt
on road Arcata to Weaverville (e slope of Southfork Mts.); Southfork Mts.
Comment Read comments Jul 25 2018
CAS-BOT-BC85533
Cupressus macrocarpa
Herbert L. Mason
1934-10-21
10023
Monterey
Point Lobos.
Comment
A356121
Cupressus sargentii
H. L. Mason
1926-4-16
Unknown
Cedar Mountain, near summit
Comment
UC1083214
Cupressus sargentii
Herbert L. Mason
1926-1-2
2606
Napa
Toll House Canyon Mt. St. Helena, Toll House Canyon
Comment
UC1191664
Cuscuta californica
Herbert L. Mason and Verne Grant
1946-9-27
13132
Butte
Graylodge Game Refuge Butte Sink
Comment
SBBG104324
Cuscuta californica var. graciliflora
H. L. Mason
1925-1
2055
Unknown
San Quintin Bay, Revillagigedo Islands
Comment
UC1178941
Cuscuta indecora
Herbert L. Mason
1945-10-21
12743
Lake
3 mi e Middletown
Comment
UCD126351
Cuscuta subinclusa
Herbert L. Mason; Verne Grant
1947-6-26
13249
Solano
Cordelia Slough, Suisun Marsh.
Comment
UCD141000
Cyperus acuminatus
Herbert L. Mason; Verne Grant
1946-8-6
12969
Colusa
2.7 miles north of Colusa between Sacramento River and Butte Creek.
Comment
SEINET200024
Cyperus difformis
Herbert L. Mason
1945-9-18
12705
Sutter
Sutter bypass near bridge on Yuba City-Knight's Landing Highway.
Comment
UCD141018
Cyperus difformis
Herbert L. Mason; Verne Grant
1946-8-7
12983
Colusa
8 miles north of Colusa.
Comment
UCD141019
Cyperus difformis
Herbert L. Mason; S. Galen Smith
1948-8-11
8328
Merced
Crane Ranch, south of junction of Merced and San Joaquin Rivers.
Comment
UC1100520
Cyperus eragrostis
Herbert L. Mason and S. Galen Smith
1948-8-11
8325
Merced
ca. 5 mi. w. Merced; San Joaquin Valley, Black Rascal Creek
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
UC698544
Cyperus eragrostis
Herbert L. Mason
1926-5-24
3222
Alameda
U.C. Campus Berkeley; , U.C. Campus
Comment
UC1100518
Cyperus erythrorhizos
Herbert L. Mason
1945-9-19
12738
Butte
Gray Lodge Game Refuge n.w. Pennington; Gray Lodge Game Refuge
Comment
UC1100519
Cyperus erythrorhizos
Herbert L. Mason
1945-9-19
12724
Colusa
1 mi. n. Colusa (e. bank Sacramento R., below causeway over Butte Sink spillway,); Sacramento R.
Comment
UC1100670
Cyperus erythrorhizos
Herbert L. Mason and S. Galen Smith
1949-7-29
1101
Sutter
rice fields in Sutter Bypass just s. Marysville
Comment
UC1100672
Cyperus erythrorhizos
Herbert L. Mason and S. Galen Smith
1948-9-7
622
San Diego
ca. 5 mi. s. Escondido (Lake Hodges); Lake Hodges
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
UC1100675
Cyperus erythrorhizos
Herbert L. Mason and S. Galen Smith
1948-7-15
146
Merced
Big Water Club e. Gustine; San Joaquin Valley
Comment
UC1100638
Cyperus niger
Herbert L. Mason
1946-7-4
12884
Sonoma
between Santa Rosa and Forestville (Pitkin Marsh); Pitkin Marsh
Comment
UC1100639
Cyperus niger
Herbert L. Mason and S. Galen Smith
1948-8-19
8382
Merced
marsh 1 mi. w. Snelling
Comment
CAS-BOT-BC114107
Cyperus squarrosus
Herbert L. Mason
1945-8-24
12686
Lake
East Shore, Lower Lake.
Comment
UC1100559
Cyperus squarrosus
Herbert L. Mason
1952-8-17
14495
Sierra
1 1/2 mi. e. Calpine (junction of Calpine and Sierraville, Beckworth Rd.); Sierra Valley
Comment
UC1102958
Cyperus squarrosus
Herbert L. Mason
1958-8-6
14898 a
Tuolumne
w. Hetch Hetchy Dam (at Swamp Lake); Sierra Nevada, Yosemite Nat'l Park, Swamp Lake
1584
Comment
UC921147
Cyperus squarrosus
Herbert L. Mason
August, 1930
5710
Lake
Clear Lake
Comment
SEINET7582973
Cyperus squarrosus
H. L. Mason
1938-7-10
11903
Tuolumne
Miguel Meadow, west of Hetch-Hetchy, Yosemite National Park.
1585
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
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
UC1191379
Cypselea humifusa
Herbert L. Mason, S. Galen Smith
1948-8-18
8354
Kings
Canal just w of Stratford; San Joaquin Valley
Comment
UC641978
Cystopteris fragilis
H. L. Mason
1936-7-29
11439
Mono
Conness Cirque near Saddlebag Lake (Tioga Pass region); Sierra Nevada
Comment
POM313036
Damasonium californicum
H. L. Mason
1927-5-9
3705
Butte
Sacramento Valley, 15 mi W of Oroville.
Comment
UC1100148
Damasonium californicum
Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith
1949-5-29
755
Lassen
on Great Northern R.R. <Nubeiber> (Hwy. 299)
Comment
UC1100149
Damasonium californicum
Herbert L. Mason
1953-6-16
14552
Sierra
1/4 mi. s. Beckwourth Buttes
Comment
UC1178930
Damasonium californicum
Herbert L. Mason
1953-6-8
14532
Lake
1.5 mi. w. Lower Lake
Comment
UCD138001
Damasonium californicum
Herbert L. Mason
1946-5-30
12794
Lake
Locomono Creek near Middletown.
Comment
UC912647
Danthonia californica
H. L. Mason
1928-4-28
4415
Marin
Tiburon Peninsula
Comment
UC1191582
Datisca glomerata
Herbert L. Mason, S. Galen Smith
1948-8-9
8283
Santa Clara
about 10 mi w of summit of Pacheco Pass (Pacheco Creek); Pacheco Creek
Comment
UC912274
Deinandra corymbosa
Herbert L. Mason
1932-4-28
7041
Monterey
Pajaro Hills
Comment
UC912489
Delphinium
Herbert L. Mason
1928-4-13
4326
Sonoma
wet marsh and pools near Petaluma
Comment
UC635340
Delphinium californicum subsp. interius
H. L. Mason
1928-5-6
4574
Alameda
six mi from Livermore; Arroyo Mocho
Comment
UC635339
Delphinium cardinale
H. L. Mason
1927-6-15
3788
Los Angeles
wash of the San Gabriel River
Comment
CAS-BOT-BC8775
Delphinium gracilentum
Herbert L. Mason
1926-4-11
2827
Alameda
Cedar Mountain and Rancho Repose, Mount Hamilton Range
Comment
UC665672
Delphinium gypsophilum subsp. gypsophilum
Herbert Mason
1940-5-4
12255
Merced
2 mi ne Ortigalita Peak; Ortigalita Canyon
304
Comment
RSA28579
Delphinium gypsophilum subsp. gypsophilum
H. L. Mason
1940-5-4
12255
Merced
Ortigalita Canyon, 2 miles NE of Ortigalita Peak.
305
Comment
UC912675
Delphinium hansenii
H. L. Mason
1923-7-21
632
Tuolumne
Hetch Hetchy Sierra Nevada Mountains
Comment
UC1076557
Delphinium hansenii subsp. hansenii
Herbert L. Mason
1938-7-7
11874
Tuolumne
ridge e Swamp Lake (between lake and Hetch Hetchy); Sierra Nevada, Yosemite National Park
1676
Comment
CAS-BOT-BC10282
Delphinium hesperium
Herbert L. Mason
1931-7-14
s.n.
San Mateo
Pescadero Creek, La Honda road
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-BC9900
Delphinium nudicaule
Herbert L. Mason
1928-4-8
4287
Sonoma
Two miles north of Fort Ross
Comment
UC635358
Delphinium nudicaule
H. L. Mason
1926-6-6
3387
Santa Cruz
Big Basin
Comment
UC635363
Delphinium nudicaule
H. L. Mason
1931-3-13
5814
Alameda
Lake Chabot
Comment
UC635342
Delphinium nuttallianum
H. L. Mason
1929-5-9
5275
Mendocino
wooded hillslopes and canyons 5 mi w Laytonville
Comment
UC912668
Delphinium parryi subsp. purpureum
Herbert L. Mason
1926-4-26
2966
Los Angeles
summit of 1st grade Mint Canyon Road
Comment
CAS-BOT-BC116453
Delphinium patens subsp. patens
H. L. Mason
1929-3-29
5136
Contra Costa
Marsh Creek Road two miles above Clayton
Comment
UC1199833
Delphinium polycladon
Herbert L. Mason
1937-7-24
14834
Tuolumne
n Hetch Hetchy Dam; Sierra Nevada, Yosemite National Park, Beehive
2133
Comment
UC635450
Dendromecon harfordii
Herbert L. Mason
1925-9-25
4105
Santa Barbara
along roadway through Buena Vista Canyon Santa Cruz Island
Comment Read comments Apr 29 2014
UC1083123
Dendromecon rigida
Herbert L. Mason
1936-4-10
11055
Calaveras
ridge between Sheep Ranch and Murphys
Comment
UC635446
Dendromecon rigida
Herbert L. Mason
1925-4-12
1339
Marin
Pipe line trail Mt. Tamalpais
Comment
UC965493
Deschampsia cespitosa subsp. cespitosa
Herbert L. Mason
1952-8-16
14491
Nevada
meadow opposite University of CA Trout Lab. University of CA Trout Lab. (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
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
UC1102968
Deschampsia danthonioides
Herbert L. Mason
1958-8-9
14890
Tuolumne
w. of Hetch Hetchy Dam (Swamp Lake area); Sierra Nevada, Yosemite Nat'l Park, Swamp Lake area
1584
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
CAS-BOT-BC886
Dicentra chrysantha
Herbert L. Mason
1921-6-21
s.n.
Santa Clara
Road from Alma to Mt. Umunhum, Sierra Azule Ridge
Comment
UC635452
Dicentra chrysantha
H. L. Mason
1922-6-30
302
Tuolumne
between Groveland and Mather (Hetch Hetchy Railroad tracks, above Oakland Recreation Camp); Sierra Nevada Mountains, Yosemite National Park
1066
Comment
UC634899
Dicentra formosa
Herbert L. Mason
1927-5-11
3734
Yuba
near Bullards Bar; Yuba River Canyon
609
Comment
UC1083121
Dicentra uniflora
Herbert L. Mason
1936-7-27
11385
Tuolumne
w of Tioga Pass (Gaylor Lakes); Sierra Nevada, Yosemite National Park
3200
Comment
UC635232
Dichelostemma capitatum
H. L. Mason
1925-1-18
1182
Marin
San Rafael to Forbes
Comment
UC912550
Dieteria canescens var. shastensis
H. L. Mason
1932-9-9
7179
Placer
Truckee Junction
Comment
UC1100287
Digitaria sanguinalis
Herbert L. Mason and S. Galen Smith
1948-7-28
8229
Fresno
San Joaquin River at Firebaugh; San Joaquin River
Comment
SACT000973
Digitaria sanguinalis
Herbert Mason, S. Smith
1948-7-28
Fresno
Rooting at nodes.
Comment
CAS-BOT-BC152433
Diplacus aurantiacus
H. L. Mason
1931-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
UC673300
Dithyrea californica
Herbert L. Mason
1926-4-27
3065
Los Angeles
30 mi w Victorville; Mohave Desert
Comment
CAS-BOT-BC126860
Dodecatheon alpinum
Herbert L. Mason
1923-8-2
702
Tuolumne
Upper Lake, headwaters of Unicorn Creek, Yosemite National Park
Comment
UC1178843
Dodecatheon alpinum
H. L. Mason
1922-8-25
349
Tuolumne
Dana Fork Tuolumne River Sierra Nevada Mountains, Yosemite National Park (Tuolumne Meadows)
Comment
UC1178845
Dodecatheon alpinum
Herbert L. Mason
1925-8-11
2221
Tuolumne
White Wolf
Comment
UC1191156
Dodecatheon alpinum
H. L. Mason
1922-8-20
343
Tuolumne
Morraine Flat Sierra Nevada Mountains, Yosemite National Park (n of Lambert's Dome, Tuolumne Meadows)
Comment
UC604432
Dodecatheon clevelandii subsp. insulare
H. L. Mason
1938-5-7
11785
Santa Barbara
nw Lompoc (Burton Mesa); nw of Lompoc, Burton Mesa
Comment
JEPS27137
Dodecatheon clevelandii subsp. patulum
Herbert L. Mason
1925-3-1
1261
San Francisco
Bernal Heights San Francisco, Bernal Heights
Comment
UC571007
Dodecatheon clevelandii subsp. patulum
Herbert L. Mason
1927-2-28
3651
Sacramento
Folsom
Comment
UC1179001
Dodecatheon clevelandii subsp. patulum
Herbert L. Mason
1925-3-7
1282
Alameda
Niles Canyon , Niles Canyon (Sunol)
Comment
UC1191692
Dodecatheon hendersonii
Herbert L. Mason
1936-3-14
10971
Calaveras
on road between San Andreas and Mokelumne Hill; between San Andreas and Mokelumne Hill
Comment
UC1199856
Dodecatheon hendersonii
Herbert L. Mason
1926-3-22
2792
Sonoma
near Napa-Sonoma line (near Petrified Forest); near Petrified Forest
Comment
UC673387
Dodecatheon hendersonii
Herbert L. Mason
1938-4-17
11740
Mariposa
8 mi e Hornitos; Sierra Nevada, e of Hornitos
Comment
UC673401
Dodecatheon hendersonii
Herbert L. Mason
1929-3-15
5047
Contra Costa
s Nortonville; s of Nortonville
Comment
UC1178842
Dodecatheon hendersonii
Herbert L. Mason
1926-3-14
2717
Napa
sw slope Mt. St. Helena
Comment
UC1039577
Dodecatheon jeffreyi
H. L. Mason
1922-8-25
350
Tuolumne
Tuolumne Meadows Sierra Nevada Mountains, Yosemite National Park (Yosemite National Park)
Comment
UC1199854
Dodecatheon jeffreyi
H. L. Mason
1923-7-25
648
Tuolumne
Hog Ranch Sierra Nevada Mountains, Yosemite National Park (Mather)
Comment
UC673493
Dodecatheon jeffreyi
H. L. Mason
1922-7-25
327
Mariposa
1 1/2 mi w Porcupine Flat; Sierra Nevada Mountains, Yosemite National Park
2133
Comment
GH424219
Dodecatheon subalpinum
H. L. Mason
1928-7-3
4867
Unknown
Yosemite Creek drainage, Tioga Road, head of Yosemite Creek grace, Yosemite National Park
Comment
UC1111590
Dodecatheon subalpinum
Herbert L. Mason
1941-7-9
12516
Madera
ridge w Moraine Meadows (Sierra Nevada); , Yosemite National Park
2682
Comment
POM312372
Downingia bicornuta
H. L. Mason, Verne Grant
1947-7-12
13412
Modoc
West side of Pit River Valley S of Alturas.
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
POM312375
Downingia insignis
H. L. Mason
1953-4-5
14506
Colusa
3 miles east of Maxwell
Comment
RSA114055
Downingia insignis
H. L. Mason
1952-4-14
14267
Contra Costa
3.5 miles S of Byron
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
UC1101476
Downingia laeta
Herbert L. Mason and Verne Grant
1947-7-11
13369
Modoc
s of Alturas (by Jones Lane, off Highway 395)
Comment
UC635711
Downingia montana
H. L. Mason
1923-7-24
641
Tuolumne
Hog Ranch, Mather Sierra Nevada Mountains, Yosemite National Park, Mather
1432
Comment
UC673418
Draba albertina
Herbert L. Mason
1926-5-30
3328
Alpine
Kit Carson Pass
2621
Comment
UC1199843
Draba cuneifolia
Herbert L. Mason
1935-3-29
8224
San Bernardino
w Searles Lake (Poison Canyon); Mojave Desert, , w of Searles Lake
Comment
UC1025288
Draba oligosperma var. oligosperma
Herbert L. Mason
1936-7-28
11406
Mono
Dana Plateau Mono National Forest, Dana Plateau
Comment
UC1056992
Drosera rotundifolia
Herbert L. Mason and L. W. Reinecke
1957-7-22
11578
Tuolumne
just s Miguel Meadows (in hills just w of Hetch Hetchy); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1106325
Drosera rotundifolia
Herbert L. Mason, B. Fuller and H. Whisler
1958-7-13
23
Nevada
1 mi w University of California Trout Laboratory (12 mi n of Truckee); Sierra Nevada, Sage Hen Creek
1981
Comment
UC1111566
Drosera rotundifolia
Herbert L. Mason
1938-8-1
12065
Tuolumne
Tiltill Valley Sierra Nevada, Yosemite National Park (sphagnum bog above meadow, Rancheria Mountain Trail)
1676
Comment
UC673312
Drymocallis lactea var. lactea
Herbert L. Mason
1923-8-21
752
Tuolumne
n base of Lembert's Dome Sierra Nevada, Yosemite National Park, Tuolumne Meadows (Tuolumne Meadows, Yosemite National Park)
Comment
UC673475
Drymocallis lactea var. lactea
Herbert L. Mason
1923-8-9
738
Tuolumne
Gaylor Lakes, ridge w third lake; Sierra Nevada, Yosemite National Park, Gaylor Lakes
Comment
UC571158
Dudleya lanceolata
H. L. Mason
1923-6-15
384
Santa Barbara
Harris Grade
Comment
YM-YOSE65566
Dulichium arundinaceum
H. L. Mason
1938-7-10
11920
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND. SWAMP LAKE
Comment
GH387213
Eastwoodia elegans
H. L. Mason
1941-7-3
12490
Unknown
head of Cuyama Valley, fourteen miles west of Maricopa
762
Comment Read comments Apr 29 2014
UC1100138
Echinodorus berteroi
Herbert L. Mason and Verne Grant
1946-8-7
12989
Butte
Gridley rd. n. of Butte Sink
Comment
UC1100139
Echinodorus berteroi
Herbert L. Mason and Verne Grant
1946-9-4
13107
Butte
833 Canal, W. Gridley Rd.
Comment
POM312496
Eclipta alba
H. L. Mason
1945-9-19
12725
Colusa
Below caus[e]way over Butte Sink spillway, East bank of Sacramento River, 1 mile north of Colusa.
Comment
UC1100124
Egeria densa
Herbert L. Mason and S. Galen Smith
1948-7-29
8241
Merced
5 mi e Los Banos (Turner Island Road)
Comment
CAS-BOT-BC451501
Egeria densa
H. L. Mason
1938-8-26
12075
San Joaquin
Trapper Slough, Robert's Island, southwest of Holt
Comment
SBBG45002
Egeria densa
H. L. Mason
1938-8-26
12075
San Joaquin
Trapper Slough, Robert's Island, SW of Holt
Comment
SEINET12902603
Egeria densa
H. L. Mason
1938-1
12075
Unknown
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
UC1112286
Elatine chilensis
Herbert L. Mason
1952-8-17
14494
Sierra
0.4 mi s Little Truckee River Bridge; Sierra Nevada; S of Little Truckee River Bridge, Sierra Co.
1920
Comment
GH67222
Elatine gracilis
H. L. Mason
1952-8-17
14494
Unknown
0.4 mile south of Little Truckee River bridge, 6300 feet
Comment
UC1101552
Elatine heterandra
Herbert L. Mason
1945-6-29
12625
Lake
Boggs Lake base of Mt, Hanna
Comment
UC1112284
Elatine heterandra
Herbert L. Mason
1952-7-19
14450
Sierra
pond 1.5 mi e Calpine (at junction of Calpine with Sierraville-Beckwourth rd); Sierra Valley; E of Calpine at junction of Calpine w/ Sierraville-Beckwourth road, Sierra Valley, Sierra Co.
1524
Comment
UC985952
Elatine heterandra
Herbert L. Mason
1952-7-19
14450
Sierra
1.5 mi e Calpine (at junction of Calpine with Sierraville-Beckwourth road); Sierra Nevada, Sierra Valley; near Calpine, Sierra Valley
1524
Comment
RSA312321
Elatine heterandra
H. L. Mason
1953-6-8
14547
Lake
Snows Lake.
Comment
JEPS45765
Elatine triandra
Herbert L. Mason
1923-7-15
608
Tuolumne
2 mi w Mather (Slat Log meadow)
Comment
UC1101536
Elatine triandra
Herbert L. Mason
1933-9-2
7257
Amador
Silver Lake Sierra Nevada
Comment
UC1101534
Elatine triandra
Herbert L. Mason
1947-8-8
13472
Modoc
nw Alturas (sw margin of Big Sage Reservior)
Comment
CAS-BOT-BC113637
Eleocharis acicularis
Herbert L. Mason; Verne Grant
1945-7-19
12635
Butte
Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge.
Comment
UC1100626
Eleocharis acicularis
Herbert L. Mason and Verne Grant
1947-7-12
13402
Modoc
irrigation ditch by Jone's Lane (off Hwy 395, several mi s of Alturas)
Comment
POM313052
Eleocharis acicularis var. acicularis
H. L. Mason
1947-8-12
13512
Modoc
Junction of North and South forks of Pit River, Alturas.
Comment
POM313057
Eleocharis acicularis var. acicularis
H. L. Mason, Verne Grant
1945-7-19
12635
Butte
Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge, Butte Sink
Comment
CAS-BOT-BC113543
Eleocharis bella
Herbert L. Mason
1940-7-6
12313
Tuolumne
Miguel Meadows; west of Hetch Hetchy.
1584
Comment
YM-YOSE65580
Eleocharis bella
H. L. Mason
1938-7-11
11930
Tuolumne
SWAMP LAKE RESEARCH RESERVE. MIGUEL MEADOWS
Comment
UC1100606
Eleocharis coloradoensis
Herbert L. Mason
1947-8-12
13512
Modoc
junction of North and South forks of Pit River, Alturas
Comment
CAS-BOT-BC113399
Eleocharis engelmannii
Herbert L. Mason
1940-7-6
12314
Tuolumne
Miguel Meadows, west of Hetch Hetchy, Yosemite National Park
1584
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
POM313062
Eleocharis parishii
H. L. Mason
1948-9-2
13628
Kern
Walker Pass
Comment
UC1100706
Eleocharis parishii
Herbert L. Mason
1948-9-2
13628
Kern
Walker Pass
Comment
UC1108824
Elymus elymoides subsp. elymoides
Herbert L. Mason
1938-7-22
11984
Tuolumne
Moraine Ridge Sierra Nevada, Yosemite National Park (nw of Lake Vernon)
2286
Comment
UC672376
Emmenanthe penduliflora
Herbert L. Mason
1928-4-22
4434
Contra Costa
Sycamore Canyon, south slope of Mount Diablo
Comment
UC1039627
Emmenanthe rosea
Herbert L. Mason
1935-5-9
8309
Stanislaus
Red Mountains, Arroyo del Puerto, Mount Hamilton Range
Comment
UC1093894
Ephedra californica
Herbert L. Mason
1940-3-22
12245
Inyo
Titus Canyon Death Valley National Monument, Grapevine Mountains, Titus C (on rocky benches along stream course)
Comment
UC1076386
Ephedra nevadensis
H. L. Mason
1930-4-20
5593
Los Angeles
hills in Rock Creek region Mohave Desert, Rock Creek
Comment
UC1093647
Ephedra trifurca
Herbert L. Mason
1957-3-31
14682
Imperial
near Yuma (desrt w of the sand hills)
Comment
UC1199841
Ephedra viridis
Herbert L. Mason
1935-5-2
8383
Kern
Piute Piute (s of Sequoia National Forest)
Comment
UC1191733
Epilobium brachycarpum
Herbert L. Mason and Verne Grant
1947-7-10
13337
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
UC1191616
Epilobium campestre
Herbert L. Mason and Verne Grant
1947-7-10
13329
Modoc
2 miles e Alturas; Dorris Reservoir
Comment
UCD105939
Epilobium campestre
Herbert L. Mason; S. Galen Smith
1948-8-9
8295
Santa Clara
Pacheco Pass, just W of summit.
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
UC1191716
Epilobium ciliatum subsp. ciliatum
Herbert L. Mason
1947-8-13
13522
Modoc
ne side F Reservoir (n of Canby)
Comment
UC1191735
Epilobium ciliatum subsp. ciliatum
Herbert L. Mason and Verne Grant
1947-7-12
13390
Modoc
irrigation ditch by Jones' Lane (off Hwy 395, several mi s of Alturas)
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
JEPS22801
Epilobium nivium
Herbert L. Mason
1936-9-20
11533
Lake
sw slope Snow Mountain
1828
Comment
UC552450
Epilobium nivium
Herbert L. Mason
1936-9-20
11533
Lake
sw slopes Snow Mountain
1828
Comment
CAS-BOT-BC190929
Epilobium pallidum
Herbert Louis Mason; Verne Grant
1947-7-13
13441
Modoc
Joseph Creek on Hwy 395.
Comment
UC1076343
Equisetum X ferrissii
Herbert L. Mason
1930-10-25
5744
Monterey
headwaters of Arroyo Seco; Santa Lucia Mts.
Comment
UC1195928
Equisetum arvense
Herbert L. Mason
1958-8-9
14864
Tuolumne
w Hetch Hetchy Dam (Swamp Lake meadow); Sierra Nevada, Yosemite Nat'l Park
1584
Comment
UC1192372
Equisetum laevigatum
Herbert L. Mason
1953-7-7
14557
Sierra
ditch n of Sattley; Sierra Valley
Comment
UCD135508
Equisetum laevigatum
Herbert L. Mason
Date Unknown
s.n.
Sonoma
Alexander Valley.
Comment
UC1076340
Equisetum telmateia subsp. braunii
Herbert L. Mason
1932-4-28
7027
Santa Cruz
Soquel Canyon; Santa Cruz Mts.
Comment
UC1254122
Equisetum telmateia subsp. braunii
Herbert L. Mason
1962-5-5
Alameda
1190 Sterling Ave. Berkeley
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
CAS-BOT-BC213566
Eragrostis hypnoides
Herbert Mason; S. Galen Smith
1948-7-29
8245
Merced
Salt slough, at end of Turner Island Road, east of Los Banos.
Comment
CAS-BOT-BC213578
Eragrostis hypnoides
Herbert L. Mason
1945-8-24
12678
Lake
East shore, Lower Lake
Comment
UC1100244
Eragrostis hypnoides
Herbert L. Mason and S. Galen Smith
1948-8-18
8348 A
Kings
along a canal just w Stratford
Comment
UCD63369
Eragrostis hypnoides
Herbert L. Mason; S. Galen Smith
1948-8-18
8348 -A
Kings
Along a canal just west of Stratford.
Comment
UC634847
Eremalche exilis
H. L. Mason
1932-4-2
6902
Kern
10 mi. e. Mojave
Comment
UCD116238
Eremalche parryi
Stephen Mason
1995-5-8
58
San Luis Obispo
San Luis Obispo County: Carrizo Plain Natural Area, N side of Panorama Rd., 0.7 mi. from Soda Lake Rd.
609
Comment
UC634838
Eremalche parryi
H. L. Mason
1930-3-30
5537
San Benito
14 mi. below Pinnacles; San Benito R. Canyon
Comment
CAS-BOT-BC168400
Eremogone kingii
Herbert L. Mason
1938-7-26
12019
Tuolumne
Andrews Peak, south of Jack Main Meadows - Yosemite National Park, Sierra Nevada
2438
Comment
UC908776
Eriastrum abramsii
Herbert L. Mason
1935-5-9
8313
Santa Clara
divide between Colorado Creek and headwaters of Arroyo Mocho
838
Comment
UC909055
Eriastrum abramsii
Herbert L. Mason
1945-5-12
12585
Lake
ridge between Burns Valley and Borax Lake
Comment
SEINET4407887
Eriastrum brandegeeae
H. L. Mason
1945-1
12604
Lake
Comment
SEINET8729305
Eriastrum brandegeeae
H. L. Mason
1945-1
12604
Lake
Obsidian Ridge, southeast of Borax Lake.
Comment
UC1191633
Eriastrum densifolium subsp. austromontanum
Herbert L. Mason
1948-9-3
13631 a
Inyo
Onion Valley
Comment
UC665612
Eriastrum densifolium subsp. densifolium
Herbert L. Mason
1941-7-1
12466
San Luis Obispo
mesa w Nipomo
106
Comment
RSA0107372
Eriastrum densifolium subsp. densifolium
H. L. Mason
1941-7-1
12466
San Luis Obispo
Mesa west of Nipomo.
107
Comment
CAS-BOT-BC514478
Eriastrum eremicum subsp. eremicum
Herbert L. Mason
1926-4-27
3070
San Bernardino
Near Victorville
Comment
SBBG29125
Eriastrum pluriflorum
E. L. Mason
1938-7-16
11956
Madera
2 mi S of South Fork
822
Comment
UC629726
Eriastrum pluriflorum
H. L. Mason
1938-7-16
11956
Madera
2 mi s South Fork; Sierra Nevada
1127
Comment
CAS-BOT-BC514831
Eriastrum pluriflorum subsp. pluriflorum
H. L. Mason
1938-7-16
11956
Madera
Sierra Nevada: 2 mi S of South Fork
1127
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
RSA0120842
Eriastrum pluriflorum subsp. pluriflorum
H. L. Mason
1938-7-16
11956
Madera
Two miles south of South Fork, Sierra Nevada.
1128
Comment
UC909058
Eriastrum sapphirinum
Herbert L. Mason
1948-6-15
3787
Los Angeles
cirque slide s Baldy; San Antonio Wash
2194
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
UC581132
Ericameria linearifolia
H. L. Mason
1934-3-28
8010
Kern
4 mi e Onyx; Kern River Canyon
Comment
UC672315
Ericameria linearifolia
H. L. Mason
1930-4-20
5596
Los Angeles
hills in the Rock Creek region Mohave Desert, Rock Creek
Comment
UC672316
Ericameria linearifolia
H. L. Mason
1926-4-27
3040
Los Angeles
Rock Creek
Comment
UC912295
Erigeron biolettii
Herbert L. Mason
1928-7-14
4908
Humboldt
near Garberville; East Fork Eel River
Comment
CAS-BOT-BC294817
Erigeron breweri var. breweri
Herbert L. Mason
1938-7-22
11977
Tuolumne
Sierra Nevada, Yosemite National Park. Beehive, north of Hetch Hetchy Dam
1981
Comment
UC1179074
Erigeron breweri var. breweri
Herbert L. Mason
1938-7-22
11977
Tuolumne
n of Hetch Hetchy Dam (Beehive); Sierra Nevada, Yosemite National Park, Beehive
Comment
UC712477
Erigeron breweri var. breweri
Herbert L. Mason
1936-8-1
11490
Mono
Leevining Canyon Sierra Nevada, Leevining Canyon
Comment
UC714412
Erigeron compositus
Herbert L. Mason
1936-7-26
11382
Tuolumne
moraine flat near Gaylor Lakes; Sierra Nevada
3048
Comment
UC1101510
Erigeron divergens
Herbert L. Mason and Verne Grant
1947-7-10
13340
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
POM199571
Erigeron foliosus var. hartwegii
H. L. Mason
1932-4-24
s.n.
Amador
Dry Creek Bridge between Ione and Latrobe
Comment
RSA93107
Erigeron petrophilus var. petrophilus
H. L. Mason
1923-11-12
853
Contra Costa
Low rocky slopes of Mt. Diablo
Comment Read comments Feb 4 2013
UC1192213
Erigeron pumilus var. intermedius
Herbert L. Mason
1948-7-18
13609
Siskiyou
Grass Lake
Comment
UC712506
Erigeron pygmaeus
H. L. Mason
1936-7-24
11346
Tuolumne
White Mountain Sierra Nevada, Mount Conness Range, White Mountain
3505
Comment
UC712511
Erigeron pygmaeus
H. L. Mason
1936-7-23
11284
Tuolumne
Mount Conness Sierra Nevada, Mount Conness
3505
Comment
UC672375
Eriodictyon californicum
Herbert L. Mason
1925-6-27
2124
Tuolumne
Mather , Mather (Hog Ranch)
Comment
CAS-BOT-BC189059
Eriodictyon capitatum
Herbert L. Mason
1947-5-2
13208
Santa Barbara
Pine Canyon, Purissima Hills
Comment
SEINET8731330
Eriodictyon capitatum
Herbert L. Mason
1947-1
Santa Barbara
Comment
CAS-BOT-BC248527
Eriogonum angulosum
H. L. Mason
1930-4-20
s.n.
San Benito
14 miles south of Hollister
Comment
POM204282
Eriogonum argillosum
H. L. Mason
1930-3-30
5533
San Benito
Canyon of the San Benito river, 14 miles south of Hollister
Comment Read comments Jan 15 2020
CAS-BOT-BC248837
Eriogonum compositum var. compositum
H. L. Mason
1931-5-9
5865
Siskiyou
Shasta Creek
Comment
UC635010
Eriogonum compositum var. compositum
H. L. Mason
1931-5-9
5865
Siskiyou
Shasta Creek
Comment
UC635002
Eriogonum elegans
H. L. Mason
1930-10-25
5777
Monterey
between Jolon and Santa Lucia Ranger Station (foothills of Santa Lucia Mountains); Santa Lucia Mountains
Comment
UC634605
Eriogonum elongatum var. elongatum
H. L. Mason
September 1930
5911
Monterey
between Watsonville and Castroville (low hills at upper end of Elkhorn Slough); Elkhorn Slough
Comment
UC634525
Eriogonum fasciculatum var. foliolosum
H. L. Mason
1923-6-15
381
Santa Barbara
Harris Grade between Harris and Lompoc; La Purisima Ridge, Harris Grade
Comment
UC1076551
Eriogonum gracile
Herbert L. Mason
1936-9-13
11530
Santa Clara
w Madrone Station
Comment
UC912608
Eriogonum gracillimum
Herbert L. Mason
1923-1-14
373
Monterey
near bridge over Salinas River; King City, Salinas River
Comment
UC1081558
Eriogonum incanum
Herbert L. Mason
1936-7-29
11433
Mono
cirque below Conness Glacier (w of Saddlebag Lake); Sierra Nevada, Yosemite National Park
3200
Comment
UC635000
Eriogonum inflatum var. inflatum
H. L. Mason
1928-3-10
4230
Riverside
Hidden Springs Canyon Coachella Mountains, Hidden Springs Canyon
Comment
CAS-BOT-BC265985
Eriogonum latifolium
H. L. Mason
1929-9-1
5414
Mendocino
Three miles north of Fort Bragg
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
UC1093645
Eriogonum luteolum var. luteolum
Herbert L. Mason
1946-7-4
12899
Sonoma
2 mi e Occidental
Comment
CAS-BOT-BC263158
Eriogonum maculatum
H. L. Mason
1926-4-28
3080
San Bernardino
Box S Springs, Mohave [Mojave] Desert
Comment
UC1081576
Eriogonum nudum var. scapigerum
Herbert L. Mason
1936-7-29
11431
Mono
w Saddlebag Lake (cirque below Conness Glacier)
3200
Comment
UC641993
Eriogonum ovalifolium var. nivale
H. L. Mason
1936-7-23
11285
Tuolumne
alpine slopes of Mount Conness Sierra Nevada, Mount Conness
Comment
UC634526
Eriogonum parvifolium
H. L. Mason
1923-6-15
394
Santa Barbara
Harris Grade between Harris and Lompoc; Harris Grade
Comment
UC635807
Eriogonum pusillum
Herbert L. Mason
1926-4-26
3012
Los Angeles
near Rock Creek; Mohave Desert
Comment
CAS-BOT-BC258294
Eriogonum reniforme
H. L. Mason
1926-4-28
3097
San Bernardino
Box S Ranch, Mojave Desert
Comment
POM257236
Eriogonum spergulinum
H. L. Mason
1928-7-4
4871
Tuolumne
Common on granite soil flats near streams; Tuolumne Meadows.
Comment
UC634528
Eriogonum spergulinum var. reddingianum
Herbert L. Mason
1924-6-20
1080
Plumas
between Gold Lake and Bear Lake
Comment
CAS-BOT-BC271958
Eriogonum spergulinum var. spergulinum
H. L. Mason
1928-7-4
4871
Tuolumne
Tuolumne Meadows
Comment
UC912475
Eriogonum umbellatum var. furcosum
Herbert L. Mason
1933-9-2
7255
Amador
Silver Lake Sierra Nevada, Silver Lake
Comment
UC635516
Eriogonum ursinum
Herbert L. Mason
1924-6-18
1055
Plumas
near summit of road between Graeagle and Gold Lake
Comment
UC965635
Eriogonum vimineum
Herbert L. Mason
1952-7-17
14379
Plumas
3 mi from Loyalton (on road to Beckwourth); Sierra Nevada, Sierra Valley
1524
Comment
UC632749
Eriophorum crinigerum
H. L. Mason
1936-7-22
11263
Tuolumne
w. spur Ragged Peaks (n. of Tuolumne Meadows, Yosemite Nat'l Park); Yosemite Nat'l Park
3200
Comment
UC566764
Eriophyllum confertiflorum var. confertiflorum
H. L. Mason
1923-6-15
392
Santa Barbara
Harris grade
Comment
CAS-BOT-BC300928
Eriophyllum jepsonii
Herbert L. Mason
1935-5-8
10008
Stanislaus
Patterson Road, twenty miles from mouth of Arroyo del Puerto, Mount Hamilton Range
533
Comment
UC545808
Eriophyllum jepsonii
Herbert L. Mason
1935-5-8
10008
Stanislaus
Patterson Road twenty mi from mouth Arroyo del Puerto; Mount Hamilton Range
533
Comment
GH427109
Eriophyllum lanatum
H. L. Mason
1925-12-31
2567
Unknown
Bartlet Mountain Road
Comment
CAS-BOT-BC301146
Eriophyllum lanatum var. achilleoides
H. L. Mason
1934-4-28
8075
Sonoma
Head of Dohrman Creek, Jensen's Ranch, four miles west of Healdsburg
Comment
UC566758
Eriophyllum lanatum var. achilleoides
H. L. Mason
1925-12-31
2567
Lake
Bartlet Mountain Road
Comment
UC632732
Eriophyllum lanatum var. achilleoides
H. L. Mason
1934-4-28
8075
Sonoma
4 mi w Healdsburg (Jensen's Ranch); Head of Dohrman Creek
Comment
UC912251
Eriophyllum lanatum var. arachnoideum
Herbert L. Mason
1934-4-28
8096
Sonoma
Dohrman Creek
Comment
UC632839
Eriophyllum lanatum var. integrifolium
H. L. Mason
1936-7-9
11168
Mariposa
ridge forming boundary between Tuolumne County and Mariposa County (s of White Wolf); Yosemite National Park
2529
Comment
CAS-BOT-BC301803
Eriophyllum multicaule
H. L. Mason
1932-4-3
6921
San Benito
Divide between Lewis Creek and San Benito River on Priest Valley Road to Hollister
Comment
UC566751
Eriophyllum wallacei
H. L. Mason
1926-4-26
3019
Los Angeles
Little Rock
Comment
UC571140
Erodium cicutarium
Herbert L. Mason
1928-3-20
3663
Alameda
Livermore
Comment
UC571139
Erodium macrophyllum
H. L. Mason
1929-3-15
5060
Contra Costa
about 5 mi from Brentwood (Marsh Creek Road)
Comment
UC1191957
Eryngium alismifolium
Herbert L. Mason
1947-8-12
13511
Modoc
Alturas, junction of N. and S. Forks of Pit River
Comment
UC985673
Eryngium aristulatum var. aristulatum
Herbert L. Mason
1945-8-24
12671
Lake
Boggs Lake
Comment
UCD127480
Eryngium articulatum
Herbert L. Mason; Verne Grant
1946-9-4
13103
Butte
Colusa Gun Club.
Comment
CAS-BOT-BC54303
Erysimum capitatum
H. L. Mason
1926-3-14
2725
Napa
Mount Saint Helena.
Comment
UC1081568
Erysimum capitatum
Herbert L. Mason
1936-4-11
11060
Calaveras
s Sheep Ranch; San Antonio Creek
Comment
UC673521
Erysimum capitatum
Herbert L. Mason
1932-3-19
6826
San Joaquin
two mi e Midway
Comment
NY32658
Erysimum capitatum subsp. angustatum
H. L. Mason
1933-4-9
7189
Contra Costa
East of Antioch along the San Joaquin River.
12.2
Comment
UC642870
Erysimum perenne
H. L. Mason
1937-7-29
11437
Mono
near Saddlebag Lake; Sierra Nevada, Conness Cirque
3200
Comment
JEPS19685
Erythranthe grayi
Herbert L. Mason
1938-7-14
11953
Madera
2 mi n Yosemite Forks (on Calif. Highway No. 41, 4 mi s of Miami (now Westfall) Ranger Station); Sierra National Forest
Comment
UC672119
Erythronium californicum
Herbert L. Mason
1929-5-9
5269
Mendocino
hill slopes and canyons five mi w Laytonville
Comment
UC635480
Eschscholzia californica
H. L. Mason
1924-11-15
1157
Marin
Willow Camp Bolinas Bay
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-BC403544
Eschscholzia californica
H. L. Mason
1922-4-1
s.n.
San Mateo
At Pigeon Point Light
Comment
CAS-BOT-BC403545
Eschscholzia californica
H. L. Mason
1922-3-26
s.n.
San Mateo
Mouth of Gazos Creek
Comment
UC1051462
Eschscholzia glyptosperma
Herbert L. Mason
1952-4-9
14233
San Bernardino
ten mi s Needles
Comment
CAS-BOT-BC76393
Eschscholzia hypecoides
H. L. Mason
1930-3-30
5530
San Benito
San Benito River Canyon, 14 miles below the Pinnacles.
Comment
UC635607
Eschscholzia lobbii
H. L. Mason
1926-3-27
2799
Napa
road between Gordon Valley and Wooden Valley
Comment
UC912329
Eucephalus breweri
Herbert L. Mason
1933-9-2
7257
Amador
Silver Lake Sierra Nevada Mountains
Comment
UC673635
Euchiton sphaericus
H. L. Mason
1930-8-1
5732
Lake
road to Bartlett Mountain
Comment
UC635175
Eucrypta chrysanthemifolia var. bipinnatifida
H. L. Mason
1935-3-28
8186
San Bernardino
near Stoddard Wells (Mohave Desert); Mohave Desert
Comment
RSA116765
Euonymus occidentalis
H. L. Mason
1921-1
s.n.
San Mateo
San Francisquito Creek near Searsville Lake.
Comment
UCD142537
Euphorbia albomarginata
Steve Mason
1993-5-2
30
Los Angeles
Mojave Desert, off CA Hwy. 138, 1.0 mi. past W 110th St. on dirt road 0.4 mi. from jct.
762
Comment
UC1051461
Euphorbia eriantha
Herbert L. Mason
1952-4-9
14232
San Bernardino
10 mi S of Needles
Comment
GH347531
Euphorbia misera
H. L. Mason
1925-4-18
1496
Unknown
redacted by HUH
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
UC672225
Euthamia occidentalis
Herbert L. Mason
1924-10-19
1125
San Francisco
in sand hills San Francisco, Merced Lake
Comment
RSA114057
Filago depressa
H. L. Mason
1952-4-11
14252
San Bernardino
Black Lava Bed just east of Dagget.
Comment
RSA93678
Filago gallica
H. L. Mason
1928-4-26
4386
Contra Costa
Berekeley-Oakland Hills
Comment
UC566905
Forestiera pubescens
H. L. Mason
1926-4-28
3092
San Bernardino
Box S Spring
Comment
UC566906
Forestiera pubescens
H. L. Mason
1923-6-14
369
Monterey
King City bridge over Salinas River; King City, Salinas River
Comment
CAS-BOT-BC456089
Fragaria vesca subsp. californica
H. L. Mason
1917-4-6
82
Alameda
Berkeley Hills
Comment
GH425837
Frangula californica
H. L. Mason
1930-10-25
5742
Unknown
Headwaters of the Arroyo Seco, Santa Lucia Mountains
Comment
GH425973
Frangula californica subsp. occidentalis
H. L. Mason
1932-7-21
7109
Unknown
East slope of Southfork Mountains, on road from Arcata to Weaverville
Comment
SBBG26893
Fremontodendron californicum
H. L. Mason
1935-5-30
10009
Napa
4 mi N of Knoxville Mines
Comment
CAS-BOT-BC130031
Fritillaria affinis
H. L. Mason
1917-4-28
s.n.
Marin
Mt. Tamalpais
Comment
UC672109
Fritillaria affinis
Herbert L. Mason
1926-3-14
2728
Lake
Mount St. Helena
Comment
UC672103
Fritillaria affinis
Herbert L. Mason
1930-3-9
5519
Marin
Point Reyes
Comment
UC672114
Fritillaria atropurpurea
Herbert L. Mason
1928-7-5
4872
Tuolumne
Yosemite National Park, Tioga Pass Tioga Pass; Sierra Nevada, Yosemite National Park, Tioga Pass
Comment
UC1179069
Fritillaria pluriflora
Herbert L. Mason
1947-3-30
13165
Colusa
0.5 mi e of Lake County Line (on Williams-Lower Lake Highway, western Colusa County); Williams-Lower Lake Highway
Comment
GH357429
Fritillaria purdyi
H. L. Mason
1941-3-16
12385
Unknown
Serpentine ridge, three miles east of Middletown, inner North Coast Range, Lake County
Comment
UC965577
Galium bifolium
Herbert L. Mason
1952-7-18
14397
Nevada
upstream University of California Trout Laboratory; Sierra Nevada, Sagehen Creek
1981
Comment
UC632797
Galium bolanderi
H. L. Mason
1936-7-15
11253
Tuolumne
1/2 mi w Mather (margin of pool)
1371
Comment
UC964759
Galium murale
Herbert L. Mason
1944-3-17
Contra Costa
Briones Hills
Comment
UC965567
Galium trifidum
Herbert L. Mason
1952-7-16
14344
Nevada
adjacent to stream which arises from large spring in meadow one mile west of UC Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC1039526
Galium trifidum var. pacificum
Herbert L. Mason
1938-7-10
11907
Tuolumne
South Island Yosemite National Park, Swamp Lake
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
UC672198
Gamochaeta ustulata
H. L. Mason
1928-4-12
4302
Contra Costa
Richmond waterfront
Comment
UC634815
Garrya elliptica
H. L. Mason
Nov 1931
5884
Monterey
road between Monterey and Carmel
Comment
UC634816
Garrya elliptica
H. L. Mason
1925-9-12
2223
Contra Costa
head of San Leandro Creek Canyon; Oakland Hills
Comment
CAS-BOT-BC186416
Garrya flavescens
H. L. Mason
1926-5-1
3160
San Diego
Palomar Mountain
Comment
UC634792
Garrya flavescens
H. L. Mason
1923-6-15
428
Santa Barbara
between La Cumbre Peak and Santa Barbara; Rattlesnake Canyon
Comment
UC634831
Garrya flavescens
H. L. Mason
1926-1-1
2601
Lake
near lower Blue Lake
Comment
CAS-BOT-BC169864
Garrya fremontii
H. L. Mason
1924-6-18
1053
Plumas
Road between Graeagle and Gold Lake
Comment
UC1093912
Garrya fremontii
Herbert L. Mason
1943-4-16
12567
Tuolumne
4 mi above Long Barn (on Highway 108); Bald Mountain
Comment
CAS-BOT-BC56282
Gaultheria humifusa
Herbert L. Mason
1936-8-30
14820
Tuolumne
Tilden Lake
2926
Comment
CAS-BOT-BC56252
Gaultheria humifusa
Herbert L. Mason
1941-7-14
12520
Madera
Ottoway Lake
2987
Comment
CAS-BOT-BC59639
Gaultheria shallon
Herbert L. Mason
1920-6-25
s.n.
San Mateo
Pescadero Cr.
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
UC566947
Gentianopsis holopetala
H. L. Mason
1923-8-21
750
Tuolumne
n. base Puppy Dome (Dana Fork near Gaylor Creek); Sierra Nevada Mts., Yosemite Nat'l Park
Comment
GH400045
Gentianopsis holopetala
H. L. Mason
1923-8-21
750
Unknown
Yosemite National Park, North base of Puppy Dome. Dana Fork near Gaylor Creek
Comment
UC571133
Geranium californicum
Herbert L. Mason
1923-7-2
2139
Tuolumne
Mather
1432
Comment
UC555622
Geum macrophyllum
H. L. Mason
1923-8-6
712
Tuolumne
Island of Lyell Fork
Comment
UC909020
Gilia achilleifolia subsp. achilleifolia
Herbert L. Mason
1927-4-23
3677
San Mateo
summit of road between La Honda and Pescadero Creek; summit of road between La Honda and Pescadero Creek
Comment
UC908903
Gilia achilleifolia subsp. multicaulis
Herbert L. Mason
1926-4-11
2860
Alameda
Cedar Mountain
Comment
UC908909
Gilia achilleifolia subsp. multicaulis
Herbert L. Mason
1926-4-11
2822
Alameda
Rancho Repose , Rancho Repose (Cedar Mt.)
Comment
UC908986
Gilia achilleifolia subsp. multicaulis
Herbert L. Mason
March 1935
Monterey
Point Lobos State Park
Comment
UC908988
Gilia achilleifolia subsp. multicaulis
Herbert L. Mason, Edward Lee
March, 1935
9437
Monterey
Point Lobos State Park
Comment
UC1186141
Gilia aliquanta
Herbert L. Mason
1935-3-28
8183
San Bernardino
Stoddard Wells; Mojave Desert
Comment
UC962140
Gilia aliquanta subsp. breviloba
H. L. Mason
1934-3-24
8190
San Bernardino
s Barstow (Taylor Springs n of Lucerne Valley); near Stoddard Wells, n of Lucerne Valley
Comment
POM282929
Gilia angelensis
C. T. Mason
1943-3-28
125
San Bernardino
Mentone Ranch, Mentone.
Comment
UC908355
Gilia angelensis
Herbert L. Mason
1928-3-11
4255
Riverside
San Gorgonio Pass
Comment
UC908846
Gilia cana subsp. bernardina
Herbert L. Mason
1926-4-27
3076
San Bernardino
se Lucerne Post Office (Box S Ranch, Mohave Desert); Mohave Desert, Box S Ranch
Comment
UC908845
Gilia cana subsp. speciformis
Herbert L. Mason
1935-3-28
8188
San Bernardino
s Barstow (Taylor Springs); Mohave Desert, , s of Barstow
Comment
UC908578
Gilia capillaris
Herbert L. Mason
1924-6-20
1083
Plumas
Gold Lake
Comment
UC908922
Gilia capitata subsp. abrotanifolia
Herbert L. Mason
1926-5-2
3196
Riverside
Temecula Valley
Comment
UC908981
Gilia capitata subsp. abrotanifolia
Herbert L. Mason
1938-5-8
11798
Santa Barbara
vicinity of the summit Figueroa Mountain; vicin summit Figueroa Mountain
Comment
UC971912
Gilia capitata subsp. capitata
Herbert L. Mason
1950-7-15
14056
Trinity
summit of grade Scott Mountain Scott Mountain
Comment
UC908933
Gilia capitata subsp. capitata
Herbert L. Mason
1935-5-25
8313 a
San Luis Obispo
Cuyama River n Santa Maria; Cuyama River n of Santa Maria
Comment
CAS-BOT-BC225293
Gilia capitata subsp. chamissonis
Herbert Mason; Annetta Carter
1938-5-18
11840
Marin
Point Reyes Peninsula, 12.5 miles from Inverness
Comment
UC909064
Gilia capitata subsp. pedemontana
Herbert L. Mason
1925-6-27
2116
Tuolumne
edge of Hog Ranch Meadow , edge of Hog Ranch Meadow (Mather)
Comment
UC908108
Gilia capitata subsp. staminea
Herbert L. Mason
1929-3-31
5159
Contra Costa
Antioch; San Joaquin River
Comment
UC908985
Gilia clivorum
Herbert L. Mason
1930-3-30
5532
San Benito
14 mi below Pinnacles (San Benito River Canyon); , below Pinnacles
Comment
UC909003
Gilia clivorum
Herbert L. Mason
1934-4-8
8052
Contra Costa
11 mi s Marsh Creek Road (on road from Marsh Creek to Livermore); on rd from Marsh Creek to Livermore
609
Comment
UC909004
Gilia clivorum
Herbert L. Mason
1928-4-15
4358
Contra Costa
top Moraga Ridge; top of Moraga Ridge
Comment
UC909033
Gilia clivorum
Herbert L. Mason
1929-3-29
5128
Contra Costa
2 mi e Clayton (Marsh Creek Road); e of Clayton
Comment
UC908837
Gilia diegensis
Herbert L. Mason
1926-5-1
3185
San Diego
n side of Palomar Mountain , Oak Grove (Oak Grove)
Comment
UC908425
Gilia interior
Herbert L. Mason
1934-3-28
8000
Kern
Kern River Canyon
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-BC226363
Gilia latiflora subsp. elongata
Herbert L. Mason
1935-3-29
8202
Kern
Two miles west of Randsburg, 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
UC908821
Gilia latiflora subsp. latiflora
Herbert L. Mason
1935-3-29
8195
San Bernardino
twelve mi w Barstow (Mohave Desert); Mohave Desert
Comment
UC908828
Gilia latiflora subsp. latiflora
Herbert L. Mason
1926-4-26
2998
Los Angeles
Little Rock Creek Mohave Desert, Little Rock Creek
Comment
UC908135
Gilia latifolia
Herbert L. Mason
1935-3-29
8287
San Bernardino
w Searles Lake (Poison Canyon); Mohave Desert, , w of Searles Lake
Comment
UC908136
Gilia latifolia
Herbert L. Mason
1935-3-29
8227
San Bernardino
w Searles Lake (Poison Canyon); Mohave Desert, w of Searles Lake, Poison Canyon
Comment
UC1275782
Gilia lottiae
Herbert L. Mason
1963-6-24
15219
Mono
Paoha Island Mono Lake, Paoha Island
Comment
UC1275780
Gilia lottiae
Herbert L. Mason
1963-7-4
15230
Mono
n end of Mono Lake
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
UC908417
Gilia minor
Herbert L. Mason
1935-3-29
8208
Kern
two mi n Mohave (Mohave Desert); , n of Mohave
Comment
RSA67335
Gilia minor
H. L. Mason
1949-4-25
14014
Ventura
Cuyama Valley, on Ojai-Maricopa road at Ventura - Santa Barbara cos. line.
Comment
UC962103
Gilia ochroleuca subsp. bizonata
H. L. Mason
1935-5-1
8360
Tulare
Kern River n Kernville; Sequoia National Forest, Kern River
Comment
UC963805
Gilia ochroleuca subsp. bizonata
Herbert L. Mason
1935-5-1
8358
Tulare
n Kernville (Kern River, Sequoia National Forest); Sequoia National Forest, Kern River
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-BC407850
Gilia ochroleuca subsp. ochroleuca
Herbert L. Mason
1926-4-27
3044 a
Los Angeles
San Gabriel Mountains, Rock Creek
1219
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
SD46103
Gilia scopulorum
Herbert L. Mason
1952-4-11
14257
San Bernardino
Black lavas north of Pisgah Crater.
Comment
HSC17017
Gilia sinuata
H. L. Mason
1935-3-29
8203
Kern
2 mi. W of Randsburg, Mojave Desert
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
CAS-BOT-BC123828
Gilia splendens subsp. australis
Herbert Louis Mason
1926-5-2
3195
Riverside
Temecula Valley
Comment
UC1051480
Gilia subacaulis
Herbert L. Mason
1952-4-11
14256
San Bernardino
Black lavas n Pisgah Crater; n of Pisgah Crater
Comment
CAS-BOT-BC226458
Gilia tenuiflora subsp. tenuiflora
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte
Comment
UC908571
Gilia tricolor subsp. diffusa
Herbert L. Mason
1935-5-2
8375
Kern
Havilah Kern River drainage, Havilah
Comment
UC908594
Gilia tricolor subsp. diffusa
Herbert L. Mason
1928-5-4
4505
El Dorado
four mi n Shingle Springs; n of Shingle Springs
Comment
UC908576
Gilia tricolor subsp. tricolor
Herbert L. Mason
1929-3-29
5118
Contra Costa
Mount Diablo
762
Comment
UC963782
Gilia tricolor subsp. tricolor
Herbert L. Mason
1929-3-23
5097
Madera
hills e Madera; e of Madera
Comment
UC635646
Githopsis specularioides
H. L. Mason
1932-4-24
6984
Amador
3 mi s Ione
Comment
UC1191378
Glinus lotoides
Herbert L. Mason
1945-7-11
12641
Colusa
3 mi above Colusa (near Butte Creek, Butte Lodge Outing Club); Butte Lodge Outing Club
Comment
UCD66783
Glyceria declinata
Herbert L. Mason; Malcolm A. Nobs
1949-4-29
739
Marin
Marsh at head of Tomales Bay on Bear Creek above junction with Mill Creek.
Comment
CAS-BOT-BC307366
Gnaphalium palustre
H. L. Mason
1932-9-9
7175
Placer
Cisco
Comment
UC581124
Gnaphalium palustre
H. L. Mason
1933-5-29
7245
El Dorado
Shingle Springs
Comment
UC912258
Gnaphalium palustre
Herbert L. Mason
1933-9-2
7278
Amador
Silver Lake Sierra Nevada, Silver lake
Comment
UC965580
Gnaphalium palustre
Herbert L. Mason
1952-7-19
14451
Sierra
1.5 mi e Calpine (at junction with Sierraville-Beckwourth road); Sierra Nevada
1524
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
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
UC1178866
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
CAS-BOT-BC26128
Gratiola heterosepala
H. L. Mason; R. C. Bacigalupi
1953-6-8
14544
Lake
on southwest margin of Boggs Lake, (west base of Mount Hanna)
Comment
UC985639
Gratiola heterosepala
H. L. Mason and R. C. Bacigalupi
1953-6-8
14544
Lake
w base Mount Hanna (sw margin of lake); Boggs Lake; Lake Co.
Comment
RSA0006023
Gratiola heterosepala
H. L. Mason, R. C. Bacigalupi
1953-6-8
14544
Lake
Southwest margin of Boggs Lake, (west base of Mount Hanna).
Comment
UC1191881
Gratiola neglecta
Herbert L. Mason and Verne Grant
1947-7-11
13373
Modoc
off Highway 395 s Alturas (irrigation ditch by Jones' Lane)
Comment
UC1076476
Grayia spinosa
Herbert L. Mason
1930-4-20
5595
Los Angeles
Mohave Desert, Rock Creek region
Comment
UC1192228
Grindelia hirsutula
Herbert L. Mason
1945-8-16
12654
Solano
near Suisun Bay; Grizzly Island
Comment
UC912517
Grindelia hirsutula
Herbert L. Mason
1929-9-1
5416
Mendocino
3 mi n Fort Bragg
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
UC672169
Gutierrezia sarothrae
H. L. Mason
1926-5-2
3205
Riverside
Temecula Valley
Comment
UC179083
Hackelia mundula
Herbert L. Mason
1941-7-7
12508
Madera
Moraine Meadow trail opposite junction to Givens Lake; Sierra Nevada, Yosemite National Park
Comment
SEINET10605896
Hainardia cylindrica
Mason
1935-6-15
Mason 9041
Monterey
Mound Meadow, Point Lobos State Park.
Comment
UCD138414
Hastingsia alba
Herbert L. Mason
1950-7-15
14051
Trinity
Scott Mountain.
Comment
UC1093642
Hastingsia alba
Herbert L. Mason
1957-7-7
14748
Plumas
in lateral stream above Feather River Canyon (along Alternate Route #40, 2 mi e of Rich Bar); above Feather River Canyon
Comment
UC912312
Hazardia squarrosa var. grindelioides
Herbert L. Mason
1929-10-12
5494
San Luis Obispo
8.4 mi from Atascadero
Comment
SACT000816
Heleochloa schoenoides
Herbert Mason
1945-7-11
Colusa
Alkali Plains three miles above Colusa.
Comment
UC1076043
Helianthella californica subsp. nevadensis
Herbert L. Mason
1947-5-17
14761
Siskiyou
on Scott Mountain Road five mi s Callahan
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
UC912616
Hemizonella minima
H. L. Mason
1923-7-28
664
Mariposa
Porcupine Flat Sierra Nevada Mountains, Yosemite National Park
Comment
UC1076488
Herniaria hirsuta subsp. cinerea
Herbert L. Mason
1932-3-19
6825
San Joaquin
2 mi e Midway (between Mountain House and Tracy)
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
UC1179105
Hesperevax acaulis var. acaulis
Herbert L. Mason
1938-4-14
11714
Tulare
4 mi e Exeter; Rocky Hill
Comment
POM257004
Hesperevax caulescens
H. L. Mason
1939-4-16
s.n.
San Joaquin
9 miles SE if Stockton at jct of Austin Road and Little John Creek
Comment
UC629721
Hesperevax caulescens
H. L. Mason
1939-4-16
12081
San Joaquin
Junction of Austin Road and Little John Creek; Stockton
Comment
UC672280
Hesperevax sparsiflora var. sparsiflora
H. L. Mason
1928-4-28
4411
Marin
Tiburon Peninsula
Comment
UC672282
Hesperevax sparsiflora var. sparsiflora
H. L. Mason
1934-4-8
Alameda
10 mi from Marsh Creek. Livermore; Livermore Road
Comment
UC1076041
Hesperochiron californicus
Herbert L. Mason
1947-5-17
14797
Unknown
above Scott Mt. grade (Siskiyou-Trinity county line)
Comment
UC672368
Hesperochiron californicus
Herbert L. Mason
1926-5-29
3298
Placer
Placer Co. Public Camp Ground
Comment
UC1212347
Hesperolinon bicarpellatum
Herbert L. Mason
1952-6-15
14298
Lake
head Butts Creek Canyon; Inner North Coast Range
Comment
CAS-BOT-BC167442
Hesperolinon breweri
Herbert L. Mason
1936-6-14
s.n.
Contra Costa
Ridge running south of Mount Diablo, head of Marsh Creek
Comment
CAS-BOT-BC176001
Hesperolinon californicum
Herbert L. Mason
1946-5-30
12795
Lake
Locomono Creek near Middletown
Comment
UC634665
Hesperolinon clevelandii
H. L. Mason
1934-5-5
8112
Lake
east side of mountain Mount Konocti
Comment
UC571119
Hesperolinon congestum
H. L. Mason
1928-4-28
4409
Marin
Tiburon Peninsula
Comment
UC1212509
Hesperolinon disjunctum
Herbert L. Mason
1952-6-19
14306
Glenn
Black Diamond Ridge Inner North Coast Ranges
Comment
UC1212510
Hesperolinon disjunctum
Herbert L. Mason
1952-6-19
14304
Glenn
Black Diamond Ridge Inner North Coast Ranges, Mendocino National Forest
822
Comment
UC1212512
Hesperolinon disjunctum
Herbert L. Mason
1946-5-31
12813
Colusa
one mi e Lake County line (Bartlett Springs to Williams road); Inner North Coast Ranges
609
Comment
UC1212513
Hesperolinon disjunctum
Herbert L. Mason
1946-5-30
12806
Lake
on road from Bartlett Springs to Williams where hwy crosses North Fork of Cache Creek east of Allen Springs; Inner North Coast Ranges
487
Comment
UC1212515
Hesperolinon disjunctum
Herbert L. Mason
1952-6-19
14301
Colusa
slope between Fouts Springs Red Bridge Public Camp; Inner North Coast Ranges, Mendocino National Forest
Comment
UC1212508
Hesperolinon disjunctum
Herbert L. Mason
1946-5-30
12812
Lake
Cache Creek drainage e Indian Valley (Bartlett Springs to Williams road); Inner North Coast Ranges
457
Comment
CAS-BOT-BC179174
Hesperolinon micranthum
Herbert L. Mason
1946-7-13
13448
Modoc
W end of Fandango Pass, near Goose Lake.
Comment
CAS-BOT-BC179175
Hesperolinon micranthum
Herbert L. Mason
1946-7-13
13448
Modoc
W end of Fandango Pass, near Goose Lake.
Comment
OBI12534
Hesperolinon micranthum
Herbert L. Mason
1946-7-4
12895
Sonoma
Inner North coast Ranges. 2 mi E of Occidental on Harrison Grade
Comment
JROH2921
Hesperolinon micranthum
Herbert L. Mason
1921-5-18
s.n.
San Mateo
Jasper Ridge Biological Preserve, Stanford University; top of Jasper Ridge
Comment
UC1212421
Hesperolinon micranthum
Herbert L. Mason
1947-8-9
13486
Modoc
33.2 mi e of Alturus (Ridge n of Cedar Camp, near Cedar Pass, Warner Mountains); Warner Mountains
Comment
UC1212402
Hesperolinon spergulinum
Herbert L. Mason
1946-7-4
12901
Sonoma
2 mi e Occidental; Inner North Coast Ranges
Comment
RSA151797
Hesperolinon spergulinum
H. L. Mason
1946-7-4
12901
Sonoma
2 miles east of Occidental.
Comment
GH295008
Hesperomecon linearis
H. L. Mason
1935-4-21
8268
Unknown
Carmel Canyon
Comment
UC635448
Hesperomecon linearis
H. L. Mason
1929-3-23
5096
Madera
Hills back of Madera
Comment
CAS-BOT-BC422537
Hesperomecon linearis
H. L. Mason
1935-4-21
8268
Monterey
Carmel Valley
Comment
UCD139990
Heteranthera dubia
Herbert L. Mason; Verne Grant
1946-8-14
13041
Butte
Butte Sink.
Comment
UC635637
Heterocodon rariflorum
H. L. Mason
Apr 1930
5551
Stanislaus
2 mi s Knight's Ferry (8 mi e of Oakdale)
Comment
SEINET10460615
Heterocodon rariflorum
Mason
Mason 578
Tuolumne
MATHER
Comment
UC555293
Heteromeles arbutifolia
H. L. Mason
1926-1-1
2581
Mendocino
Upper Lake to Elk Mt.
Comment
UC570890
Heuchera micrantha var. diversifolia
Herbert L. Mason
1926-5-26
3237
Alameda
Niles Canyon
Comment
CAS-BOT-BC203385
Hibiscus lasiocarpos var. occidentalis
Herbert L. Mason
1945-9-19
12726
Sutter
West Butte Road on the east side of Butte Creek
Comment
CAS-BOT-BC312979
Hieracium triste
Herbert L. Mason
1937-8-31
14838
Tuolumne
Sierra Nevada, Yosemite National Park. Grace Meadow, west of Saurian Crest
2651
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
RSA0016762
Hippuris vulgaris
H. L. Mason
1948-9-5
13670
Mono
Junction of Highway 108 and 395.
Comment
UC1178028
Hollisteria lanata
Herbert L. Mason
1950-4-21
14039
San Benito
e side of Panoche Valley Panoche Valley
Comment
CHSC2153
Hordeum jubatum
P. Mason
1937-5-23
Glenn
On canal bank at Ord Bend.
39
Comment
GH345612
Horkelia bolanderi
H. L. Mason
1834-5-5
8127
Unknown
between Kelseyville and Lower Lake
Comment Read comments Apr 20 2012
CAS-BOT-BC532199
Horkelia californica var. frondosa
Herbert Mason; Edward Lee
1934-10-1
9359
Monterey
Whaler's Knoll, Point Lobos State Park
Comment
UC555283
Horkelia marinensis
H. L. Mason
1929-9-1
5406
Mendocino
3 mi n Fort Bragg
Comment
GH345643
Horkelia parryi
H. L. Mason
1933-5-29
7253
Unknown
two miles south of Ione
152
Comment
UC555679
Horkelia parryi
H. L. Mason
1928-5-3
4464
Amador
1 mi s Ione
Comment
UC1076054
Horkelia tridentata subsp. flavescens
Herbert L. Mason
1947-5-17
14763
Siskiyou
on Scott Mountain raod five mi s Callahan; Scott Mountain Road
Comment
CAS-BOT-BC312530
Hulsea heterochroma
H. L. Mason
1934-9-9
8152
Monterey
Headwaters of Arroyo Seco, Santa Lucia Mountains
Comment
UC672327
Hydrophyllum capitatum var. alpinum
H. L. Mason
1926-5-29
3302
Nevada
Truckee River
Comment
UCD110341
Hypericum anagalloides
Herbert L. Mason; S. Galen Smith
1948-8-19
8381
Merced
1 mile west of Snelling.
Comment
UC672591
Hypericum concinnum
H. L. Mason
1926-5-29
3282
Nevada
5 mi. s. Grass Valley (Rattlesnake Creek); Rattlesnake Creek
609
Comment
CAS-BOT-BC410235
Hypericum concinnum
H. L. Mason
1930-6-1
5676
Lake
St. Helena Creek, slopes of Mount St. Helena
Comment
UC566703
Hypochaeris glabra
Herbert L. Mason
1926-4-18
2874 a
San Francisco
San Francisco
Comment
UC909040
Ipomopsis aggregata
Herbert L. Mason
1924-6-15
1035
Plumas
near junction of Greagle Creek and Feather River Blairsden
Comment
UC571179
Iris douglasiana
H. L. Mason
1928-4-8
4282
Sonoma
Fort Ross
Comment
UC571174
Iris macrosiphon
H. L. Mason
1926-3-21
2762
Lake
between Middletown and Mt. St. Helena
Comment
GH257750
Iris munzii
H. L. Mason
1938-5-9
11810
Unknown
North Fork of the Tule River, one mile below Milo
Comment
UC912684
Isoetes occidentalis
Herbert L. Mason
1936-7-15
11249
Tuolumne
1/2 mi w Mather
Comment
CAS-BOT-BC69873
Isoetes orcuttii
Mason
1917-4-8
1184
San Bernardino
Red Hill, near Upland.
Comment
CAS-BOT-BC112554
Isolepis cernua
Herbert L. Mason
1946-6-9
12866
San Luis Obispo
Dune Lakes, between Ocrano and mouth of Santa Maria River.
Comment
UC634683
Isomeris arborea
H. L. Mason
1926-4-28
3081
San Bernardino
Box S Ranch Spring
Comment
UC1093955
Isopyrum occidentale
Herbert L. Mason
1936-4-10
11049
Calaveras
road between Murphys and Angels Camp
Comment
RSA85305
Isopyrum stipitatum
H. L. Mason
1927-3-20
657
Alameda
Arroyo Mocho, 17 miles S of Livermore
Comment
UC642662
Ivesia lycopodioides subsp. lycopodioides
H. L. Mason
1936-7-29
11428
Mono
Conness Glacier; Sierra Nevada
3505
Comment
GH345719
Ivesia muirii
H. L. Mason
1923-8-2
700
Unknown
Johnson's Peak, near headwaters of Unicorn Creek, West-facing gravely slope
Comment
UC555633
Ivesia muirii
H. L. Mason
1923-8-2
700
Tuolumne
near headwaters of Unicorn Creek; Johnson's Peak
Comment
UC1093883
Ivesia santolinoides
Herbert L. Mason
1938-7-28
12039
Tuolumne
e of Tilden Lake (Macomb Ridge); Sierra Nevada, Yosemite National Park
3048
Comment
CAS-BOT-BC142372
Ivesia shockleyi
Herbert L. Mason
1936-7-28
11397
Mono
Dana Plateau, vicinity of Mount Dana - Sierra Nevada
3657
Comment
UC1191846
Jaumea carnosa
Herbert L. Mason
1945-7-20
14801
Monterey
near Moss Landing; Elkhorn Slough
Comment
UC1192236
Jaumea carnosa
Herbert L. Mason
1949-7-7
14033
San Mateo
marshes at mouth Pescadero Creek
Comment
UC1081518
Jepsonia heterandra
Herbert L. Mason
1936-3-14
10979
Calaveras
2 mi e Mokelumne Hill
Comment
UC1100958
Juncus balticus
Herbert L. Mason and Verne Grant
1947-7-9
13297
Lassen
5 mi e Bieber
Comment
UC1100959
Juncus balticus
Herbert L. Mason and Verne Grant
1947-6-26
13248
Solano
Cordelia Slough Suisun Marsh
Comment
POM312821
Juncus breweri
H. L. Mason
1946-6-9
12873
San Luis Obispo
Dune Lakes, between Oceano and mouth of Santa Maria River.
Comment
UC1101045
Juncus bufonius
Herbert L. Mason
1949-7-7
14028
San Mateo
Mouth of Gazos Creek
Comment
UC1101047
Juncus bufonius
Herbert L. Mason and Verne Grant
1947-7-9
13287
Shasta
just e Hatchet Creek summit (Highway 200)
1219
Comment
UC1101033
Juncus dubius
Herbert L. Mason and S. Galen Smith
1948-8-19
8384
Merced
1 mi w Snelling
Comment
YM-YOSE65672
Juncus dubius
H. L. Mason
1938-7-10
11925
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND. SWAMP LAKE
Comment
UC1101031
Juncus hesperius
Herbert L. Mason
1946-7-24
12932
Marin
second lake s. Bear Valley (on rd. to Lake Ranch)
Comment
UC1101032
Juncus hesperius
Herbert L. Mason
1946-7-24
12931
Marin
second lake s Bear Valley (on road to Lake Ranch)
Comment
POM312827
Juncus hesperius
H. L. Mason
1946-7-24
12931
Marin
Second lake south of Bear Valley on road to Lake Ranch.
Comment
UC965654
Juncus howellii
Herbert L. Mason
1952-7-16
14349
Nevada
1 mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC1076561
Juncus macrandrus
Herbert L. Mason
1938-7-19
11925
Tuolumne
w of Hetch Hetchy (s island in Swamp Lake); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1106321
Juncus nevadensis
Herbert L. Mason, B. Fuller, and H. Whisler
1958-7-22
17
Nevada
1 mi w University of California Trout Laboratory (12 mi n of Truckee); Sierra Nevada, Sage Hen Creek
1981
Comment
UC1101093
Juncus patens
Herbert L. Mason and Verne Grant
1946-7-5
12913
Solano
just n Vallejo (in Lake Chabot water reservoir); Lake Chabot
Comment
GH362739
Kalmia microphylla
H. L. Mason
1923-8-2
698
Unknown
Along headwaters of Unicorn Creek
Comment
GH362740
Kalmia microphylla
H. L. Mason
1923-7-5
4874
Unknown
Tioga Mines
Comment
GH365654
Keckiella antirrhinoides
H. L. Mason
1926-4-30
3142
Unknown
Pala Grade
Comment
UC565579
Keckiella breviflora
Herbert L. Mason
1926-5-26
3272
Placer
5 mi above Auburn
Comment
UC565588
Keckiella cordifolia
Herbert L. Mason
1926-6-15
421
Santa Barbara
Gaviota Pass
Comment
JEPS19275
Keckiella lemmonii
Herbert L. Mason
1945-6-28
12603
Lake
se of Borax Lake; Obsidian Ridge
Comment
UC1178984
Keckiella lemmonii
Herbert L. Mason
1945-6-28
12603
Lake
se of Borax Lake; Obsidian Ridge
Comment
UC1111593
Kelloggia galioides
Herbert L. Mason
1941-7-14
12523
Madera
Ottoway Lake; Sierra Nevada, Yosemite National Park
2987
Comment
UC555464
Krameria erecta
H. L. Mason
1926-4-28
3083
San Bernardino
Box S Spring
Comment
UC1076474
Krascheninnikovia lanata
Herbert L. Mason
1930-4-20
5591
Los Angeles
hills in the Rock Creek region Mohave Desert, Rock Creek region
Comment
UC1076550
Kumlienia hystricula
Herbert L. Mason
1936-3-14
10997
Calaveras
s of Sheep Ranch (San Antonio Creek); San Antonio Creek
Comment
CAS-BOT-BC349853
Lactuca tatarica subsp. pulchella
Herbert L. Mason
1940-7-6
12316
Tuolumne
Yosemite National Park. Miguel Meadows
1584
Comment
HSC5891
Lactuca tatarica subsp. pulchella
H. L. Mason
1940-7-6
12316
Tuolumne
Miguel Meados
1585
Comment
UC565540
Lactuca virosa
Herbert L. Mason
1926-10-12
3642
Alameda
Berkeley
Comment
UC912601
Lagophylla ramosissima
Herbert L. Mason
1929-9-21
5432 a
Contra Costa
Marsh Creek road 3 mi above Clayton (summit of grade)
Comment
RSA131014
Lamium amplexicaule
W. E. Mason
1917-04
s.n.
Santa Clara
Campus Stanford University.
Comment
UC571109
Larrea tridentata
H. L. Mason
1930-4-20
5568
Kern
Caliente Creek; Tehachapi Mountains
Comment
CAS-BOT-BC339059
Lasthenia californica
H. L. Mason
1921-6-1
s.n.
San Mateo
Pebble Beach near Pescadero
Comment
UC566722
Lasthenia debilis
H. L. Mason
1929-3-24
5113
Madera
eighteen mi e Madera (at junction of Yosemite Road)
Comment
UC769987
Lasthenia fremontii
Herbert L. Mason
1934-3-25
7970
Sacramento
Keithly Ranch Sacramento Valley, Rio Linda
Comment
RSA114067
Lasthenia fremontii
H. L. Mason
1952-4-14
14260
Contra Costa
3.5 miles S of Byron
Comment
UC566739
Lasthenia glaberrima
H. L. Mason
1929-4-7
5168
Stanislaus
6 mi w Oakdale
Comment
UC566740
Lasthenia glaberrima
H. L. Mason
1928-5-3
4474
Amador
hills near Carbondale
Comment
CAS-BOT-BC352833
Lasthenia glabrata subsp. glabrata
H. L. Mason
1929-4-29
5250
Lake
Blue Lake
Comment
UC566714
Lasthenia gracilis
H. L. Mason
1929-3-31
5154
Contra Costa
along San Joaquin River; , Antioch
Comment
RSA116657
Lasthenia macrantha subsp. macrantha
H. L. Mason
1921-6-1
s.n .
San Mateo
Pebble Beach near Pescadero
Comment
UC632856
Lasthenia minor
H. L. Mason
1936-4-12
11083
Calaveras
San Andreas
Comment
UC1191474
Lathyrus jepsonii var. jepsonii
Herbert L. Mason
1945-7-12
12650
Solano
Suisun Marshes
Comment
UC1076391
Lathyrus lanszwertii var. lanszwertii
Herbert L. Mason
1925-7-4
2142
Tuolumne
Mather Sierra Nevada
1432
Comment
UC1111597
Lathyrus nevadensis var. nevadensis
Herbert L. Mason
1936-4-10
11056
Calaveras
ridge between Sheep Ranch and Murphys
Comment
UC673601
Lathyrus sulphureus
H. L. Mason
1925-7-4
2143
Tuolumne
Mather Sierra Nevada Mountains, Yosemite National Park
Comment
UC964775
Lathyrus vestitus var. alefeldii
Herbert L. Mason
1926-5-1
3156
San Diego
Palomar Mountain
Comment
UC964776
Lathyrus vestitus var. vestitus
Herbert L. Mason
1928-5-6
4562
Alameda
Cedar Mountain
Comment
CAS-BOT-BC321072
Layia gaillardioides
H. L. Mason
1921-7-14
s.n.
San Mateo
La Honda-Pescadero Road, near Pescadero Creek
Comment
UC571050
Ledum glandulosum
H. L. Mason
1930-6-1
5672
Marin
Invernesss Ridge
Comment
UC571052
Ledum glandulosum
H. L. Mason
1928-7-4
4870
Tuolumne
Yosemite National Park, Tuolumne Meadows Tuolumne Meadows; Sierra Nevada Mountains, Yosemite National Park, Tuolumne Me
Comment
CAS-BOT-BC274325
Leersia oryzoides
Herbert L. Mason
1945-9-19
12715
Colusa
Below causway over Butte Sink spillway, east bank of Sacramento River, 1 mile above Colusa
Comment
UC965521
Lemna trisulca
Herbert L. Mason
1952-7-10
14320
Nevada
1 mi w of California Trout Laboratory (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
POM312465
Lemna trisulca
H. L. Mason
1955-7-30
14638
Plumas
Near Chester
Comment
UC1101269
Lemna trisulca
Herbert L. Mason, Verne Grant
1947-7-12
13432
Modoc
n of Likely (Corportation Ranch Headquarters); Corportation Ranch Headquarters
Comment
UC1101274
Lemna turionifera
Herbert L. Mason, Verne Grant
1946-8-6
12966
Colusa
4 mi s of Colusa (w side of Sacramento River, on Colusa-Marysville Highway); Sacramento River
Comment
UC673528
Lepidium fremontii
H. L. Mason
1926-4-27
3056
Los Angeles
30 mi w Victorville; 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
UC1100306
Leptochloa fascicularis
Herbert L. Mason
1945-9-19
12720 A
Colusa
e bank of river 1 mi n Colusa (below causeway); Sacramento River
Comment
UC908682
Leptodactylon pungens
Herbert L. Mason
1926-5-30
3308
El Dorado
above Emerald Bay (Lake Tahoe); , above Emerald Bay
1828
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-BC226518
Leptosiphon acicularis
H. L. Mason
1921-5-14
s.n.
Alameda
Hayward
Comment
HSC17090
Leptosiphon aureus
H. L. Mason
1935-4-30
8348
Kern
W side of Walker Pass near Summit
Comment
SD45367
Leptosiphon bicolor
Herbert L. Mason
1935-5-1
8374
Tulare
Kern River Canyon north of Kernvelle in Sequoia National Forest.
Comment
CAS-BOT-BC226620
Leptosiphon grandiflorus
H. L. Mason
1940-5-5
12275
Madera
Los Banos Creek
Comment
HSC17103
Leptosiphon grandiflorus
H. L. Mason
1940-5-5
12275
Madera
Los Banos Creek
Comment
CAS-BOT-BC226736
Leptosiphon latisectus
Herbert L. Mason
1928-4-8
4289
Sonoma
Coast, 2 miles north of Fort Ross
Comment
SD44506
Leptosiphon liniflorus
Herbert L. Mason
1935-5-2
8386
Kern
Plains east of Bakersfield.
Comment
UC964718
Leptosiphon parviflorus
Herbert L. Mason
1935-5-21
8315
San Mateo
Pebble Beach Pescadero
Comment
UC912330
Lessingia micradenia var. micradenia
Herbert L. Mason
1925-9-17
2233
Marin
near Phoenix Lake
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
CDA8201
Lessingia ramulosa
M. Mason
1976-7-6
Sonoma
Airport Road, Sonoma County Airport, northwest of Santa Rosa.
0
Comment
UC912255
Lessingia ramulosa
Herbert L. Mason
1928-7-20
4912
Lake
s Kelseyville
Comment
CAS-BOT-BC229481
Lewisia kelloggii
Herbert L. Mason
1941-7-6
12495
Mariposa
Sierra Nevada, Yosemite National Park. Horse Ridge
2895
Comment
UC1076056
Lewisia nevadensis
Herbert L. Mason
1947-5-17
14795
Unknown
above Scott Mountain grade (Siskiyou-Trinity counties)
Comment
UC642830
Lewisia pygmaea
H. L. Mason
1923-8-1
681
Tuolumne
Lyell Fork of Tuolumne River Sierra Nevada, Yosemite National Park, Lyell Fork of Tuolumn
Comment
UC1076040
Lewisia rediviva
Herbert L. Mason
1947-5-17
14776
Unknown
summit of Scott Mountain grade Trinity-Siskiyou County Line
Comment
UC566843
Ligusticum apiifolium
Herbert L. Mason
1926-5-22
3220
Alameda
Berkeley Hills
Comment
UC1100170
Lilaea scilloides
Herbert L. Mason
1948-6-29
13586
Merced
2 mi n Volta
Comment
UC566870
Lilaeopsis occidentalis
H. L. Mason
1929-8-24
5402
Mendocino
Fort Bragg, Pudding Creek Slough
Comment
UC673397
Lilium humboldtii
Herbert L. Mason
1923-6-15
417
Santa Barbara
Gaviota Pass
Comment
UC673408
Lilium occidentale
Herbert L. Mason
1932-7-21
7106
Humboldt
Trinidad Head
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
UC971854
Limnanthes alba subsp. versicolor
Charles T. Mason Jr.
1949-5-9
1294
El Dorado
along US Hwy 50 4.3 mi sw Placerville
Comment
UC971859
Limnanthes alba subsp. versicolor
Charles T. Mason Jr.
1949-4-25
1261
Shasta
6.7 mi w Ingot (along US Hwy 299)
304
Comment
UC971861
Limnanthes alba subsp. versicolor
Charles T. Mason Jr.
1949-4-25
1263
Shasta
along US Hwy 299 4.2 mi w Ingot
304
Comment
SEINET6670296
Limnanthes alba var. alba
C. T. Mason
1948-5-13
1184
Sacramento
South side of State Highway 16, six miles east of Sacroamento
30
Comment
POM311141
Limnanthes bakeri
C. T. Mason
1948-5-8
1181
Mendocino
0.6 miles N of Willits High School on east side of Hwy 101
427
Comment
UC971875
Limnanthes douglasii subsp. douglasii
Charles T. Mason Jr.
1948-5-16
1197
Marin
field 1/2 mi n Nicasio School (w side of Nicasio-Fairfax road)
Comment
UC971876
Limnanthes douglasii subsp. douglasii
Charles T. Mason Jr.
1948-3-14
1198
Marin
Petaluma-Point Reyes road 0.5 mi se junction with Fairfax-Nicasio-Point Reyes road
Comment
POM311137
Limnanthes douglasii subsp. douglasii
Charles T. Mason Jr.
1948-3-15
1199
Marin
Along Petaluma-Pt. Reyes road 1 mi. NE of junction with Fairfax-Nicasio-Pt. Reyes Road.
Comment
UC971868
Limnanthes douglasii subsp. douglasii
Charles T. Mason Jr.
1948-3-7
1117
Sonoma
along Sonoma-Glen Ellen-Santa Rosa road; ditch at crossroad
Comment
UC971871
Limnanthes douglasii subsp. douglasii
Charles T. Mason Jr.
1948-3-27
1138
Napa
about 5 mi s Monticello (along Monticello-Napa road)
Comment
UC971806
Limnanthes douglasii subsp. nivea
Charles T. Mason Jr.
1948-5-8
1180
Mendocino
along US Hwy 101 5 mi s Willits
609
Comment
UC971838
Limnanthes douglasii subsp. nivea
Herbert L. Mason
1941-4-5
Lake
Borax Lake
Comment
UC635578
Limnanthes douglasii subsp. rosea
H. L. Mason
1929-3-24
5106
Madera
18 mi e Madera (at junction of Yosemite Road)
Comment
UC971790
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1949-3-31
1244
Merced
5 mi se Merced (along road to El Nido)
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
RSA435686
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1949-3-31
1247
Merced
6 miles southeast of LeGrand along the road to Raymond.
Comment
SEINET6670600
Limnanthes douglasii subsp. rosea
C. T. Mason
1949-3-29
1241
Sacramento
Four miles east of Sloughhouse on north and south sides of State Highway 16
Comment
CAS-BOT-BC45926
Limnanthes floccosa subsp. californica
Charles T. Mason, Jr.
1949-4-24
1255
Butte
8 miles N.W. of Oroville along the 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
UC971894
Limnanthes montana
Charles T. Mason Jr.
1949-5-9
1289
Mariposa
6 mi n Raymond-Le Grande-Mormon Bar corner
Comment
UC635575
Limnanthes striata
H. L. Mason
1928-5-4
4513
El Dorado
4 mi above Shingle Springs (along streams)
Comment
UC971902
Limnanthes striata
Charles T. Mason Jr.
1948-4-25
1155
Calaveras
3.4 mi n Altaville (on State Hwy 49)
304
Comment
UC971900
Limnanthes striata
Charles T. Mason Jr.
1948-4-24
1147
Amador
State Hwy 16 0.5 mi e junction with Highway 104 (ditch in field on s side of hwy)
121
Comment
POM311142
Limnanthes versicolor
Charles T. Mason Jr.
1949-4-25
1258
Shasta
Along U.S. Highway 299 between Redding and Bella Vista.
Comment
POM311145
Limnanthes versicolor
Charles T. Mason Jr.
1948-5-13
1189
El Dorado
12.7 miles north of Plymouth along S.E. side of State Highway 49.
518
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
UC1101423
Limosella acaulis
Herbert L. Mason
1947-8-13
13529
Modoc
ne side F Reservoir (n of Canby); ne side of F reservoir
Comment
UC907872
Linanthus
Herbert L. Mason
1932-4-25
8024
El Dorado
Shingle Springs
Comment
UC907966
Linanthus acicularis
Herbert L. Mason
1933-4-30
7218
Lake
Middletown
Comment
UC908561
Linanthus ambiguus
Herbert L. Mason
1932-4-17
6950
Santa Clara
road to Sweedal, headwaters of Uvas Creek Uvas Creek
Comment
UC908568
Linanthus ambiguus
Herbert L. Mason
1926-4-11
2825
Alameda
Rancho Repose Cedar Mountain
Comment
UC907993
Linanthus androsaceus
Herbert L. Mason
1933-4-21
7193 A
Santa Clara
w of Smith Creek (lower slopes of Mount Hamilton); Mount Hamilton
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
UC907843
Linanthus androsaceus
Herbert L. Mason
1943-4-15
12564
Santa Clara
w side Pachaco Pass (border of Santa Clara-Merced Counties)
Comment
UC723911
Linanthus arenicola
Herbert L. Mason
1935-4-30
8294
San Bernardino
sw of Trona; Mohave Desert, Poison Canyon; Poison Canyon, SW of Trona, Mohave Desert, San Bernardino Co.
Comment
UC567794
Linanthus arenicola
Herbert L. Mason
1935-3-29
8232
San Bernardino
1 mi s Trona (w side of lake); Mohave Desert, Searles Lake; Searles Lake, Mohave Desert, San Bernardino Co.
Comment
SEINET8729330
Linanthus aureus
Herbert L. Mason
1926-1
2945
Los Angeles
Pacoima Wash, foothills of San Gabriel Mountains.
Comment
UC908482
Linanthus bicolor
Herbert L. Mason
1935-5-1
8374
Tulare
n of Kernville; Sequoia National Forest, Kern River
Comment
UC908559
Linanthus bicolor
Herbert L. Mason
1926-4-11
2829
Alameda
Cedar Mountain and Rancho Repose Mount Hamilton Range, Arroyo Mocho
Comment
UC963767
Linanthus bicolor
Herbert L. Mason
1935-5-1
8374
Tulare
n of Kernville Canyon; Sequoia National Forest, Kern River Canyon
Comment
SEINET10805448
Linanthus californicus
Herbert L. Mason
1941-3-28
Mason 12402
San Luis Obispo
North end of Nipomo Mesa.
76
Comment
UC908356
Linanthus ciliatus
H. L. Mason
1935-5-9
Stanislaus
Arroyo del Puerto Mount Hamilton Range, Red Mountains
Comment
UC963790
Linanthus ciliatus
Herbert L. Mason
1938-5-10
11821
Madera
n of Wood Lake (on Sequoia National Park Road)
Comment
UC963808
Linanthus concinnus
Herbert L. Mason
1934-3-30
8035
Los Angeles
s of Valyermo (Rock Creek, n side of San Gabriel Mountains); San Gabriel Mountains, Rock Creek
Comment
UC1051463
Linanthus demissus
Herbert L. Mason
1952-4-9
14234
San Bernardino
s of Needles; Sawtooth Range
Comment
SEINET196202
Linanthus dichotomus
Herbert L. Mason
1926-4-11
2826
Alameda
Cedar Mountain, Mount Hamilton Range.
Comment
UC689684
Linanthus dichotomus
Herbert L. Mason
1942-5-24
12540
Napa
3 mi s Pope Valley Store
Comment
UC971717
Linanthus dichotomus
Herbert L. Mason
1942-5-24
12540
Napa
8 mi s Pope Valley Store
Comment
JEPS13930
Linanthus filipes
Herbert L. Mason
1926-5-28
3259
El Dorado
between Shingle Springs and Coloma; Rose Springs
396
Comment
UC907947
Linanthus filipes
Herbert L. Mason
1938-4-14
11719
Tulare
4 mi e Exeter
304
Comment
UC909141
Linanthus filipes
Herbert L. Mason
1928-5-4
4515
El Dorado
4 mi n Shingle Springs
Comment
UC907887
Linanthus grandiflorus
H. L. Mason
1932-7-24
7123
Marin
Point Reyes
Comment
UCR66532
Linanthus grandiflorus
H. L. Mason
1940-5-5
12275
Madera
Los Banos Creek
Comment
GH385227
Linanthus grandiflorus
H. L. Mason
1940-5-5
12275
Unknown
Los Banos Creek
Comment
UC1056990
Linanthus harknessii
Herbert L. Mason
1936-8-6
11508
Mariposa
Peregoy Meadow, Glacier Point road Sierra Nevada, Yosemite National Park
2255
Comment
UC1191631
Linanthus harknessii
Herbert L. Mason
1948-7-18
13606 a
Siskiyou
Grass Lake
Comment
UC1051457
Linanthus jonesii
Herbert L. Mason
1952-4-7
14207
Riverside
Palm Canyon Palm Spring
Comment
UC908956
Linanthus latisectus
Herbert L. Mason
1929-5-9
5274
Mendocino
5 mi nw Laytonville
Comment
SEINET8729348
Linanthus liniflorus
Herbert L. Mason
1935-1
8386
Kern
Plains east of Bakersfield.
Comment
UC972233
Linanthus montanus
Herbert L. Mason
1936-5-15
11114
Mariposa
3 mi e Coulterville
Comment
UC907959
Linanthus parryae
Herbert L. Mason
1926-4-26
2990
Los Angeles
1 mi E of Palmdale; Mohave Desert
Comment
UC754224
Linanthus parviflorus
Herbert L. Mason
1941-4-6
12414
Butte
Cherokee; ; Cherokee, Butte Co.
304
Comment
UC907832
Linanthus parviflorus
Herbert L. Mason
1938-5-8
11805
Santa Barbara
vicinity Figueroa Mountain summit; Figueroa Mountain
1371
Comment
UC907984
Linanthus parviflorus
Herbert L. Mason
1926-6-6
3380
Santa Cruz
just below Woodwardia Falls; Big Basin
Comment
UC909079
Linanthus parviflorus
Herbert L. Mason
1932-7-24
7124
Marin
Point Reyes
Comment
UC908607
Linanthus parviflorus
Herbert L. Mason
1930-4-21
5609
Monterey
Priest Valley
Comment
UC908692
Linanthus parviflorus
Herbert L. Mason
1926-3-22
2790
Napa
along road from Calistoga to Petrified Forest (near Sonoma County line)
Comment
UC908955
Linanthus parviflorus
Herbert L. Mason
1928-4-13
4332
Napa
between Santa Rosa and Calistoga
Comment
UC1178837
Linanthus pygmaeus
Herbert L. Mason
1940-5-3
12261
Merced
2 mi ne Ortigalita Peak; South Coast Ranges, Ortigalita Canyon
304
Comment
UC908599
Linanthus pygmaeus
Herbert L. Mason
1935-5-30
8322
Lake
w of Mirabel Lake
Comment
UC908626
Linanthus pygmaeus
Herbert L. Mason
1932-4-3
6918
Fresno
3 mi w Coalinga (on the Priest Valley road)
Comment
POM257229
Lipocarpha occidentalis
H. L. Mason
1938-7-13
11945
Mariposa
Yosemite National Park; Base of El Capitan, Yosemite Valley
1227
Comment
UC632743
Lipocarpha occidentalis
H. L. Mason
1938-7-22
11981
Tuolumne
n of Hetch Hetchy (Vernon Lake Trail, Yosemite National Park); Sierra Nevada, Yosemite National Park
2072
Comment
UC635727
Lipocarpha occidentalis
Herbert L. Mason
1937-7-21
11557 a
Tuolumne
Yosemite National Park, Miguel Meadows Miguel Meadows; Yosemite National Park, Miguel Meadows
1645
Comment
CAS-BOT-BC111983
Lipocarpha occidentalis
H. L. Mason
1938-7-10
11904
Tuolumne
Margin of lake at gravel pit, Miguel Meadow, west of Hetch-Hetchy.
1584
Comment
UC1076090
Lithocarpus densiflorus
Herbert L. Mason
1927-7-31
4002
Santa Cruz
Mt. Herman
Comment
UC1076091
Lithocarpus densiflorus
Herbert L. Mason
1928-4-8
4296
Sonoma
2 mi n Ft. Ross (coast)
Comment
UC1076093
Lithocarpus densiflorus
Herbert L. Mason
1926-2-28
2673
Marin
Mt. Tamalpais
Comment
UC570877
Lithophragma
Herbert L. Mason
1926-5-29
3294
Nevada
3 mi w Cisco; Crystal Lake
1767
Comment
UC573141
Lithospermum californicum
Herbert L. Mason
1929-5-18
5333
Shasta
8 mi n Lamoine
Comment
UC909081
Loeseliastrum matthewsii
Herbert L. Mason
1926-4-27
3058
Los Angeles
30 mi. w. Victorville; Mojave Desert
Comment
UC909086
Loeseliastrum schottii
Herbert L. Mason
1926-4-28
3099
San Bernardino
s. Lucerne Valley (Box S Ranch); Box S Ranch
Comment
UC1077103
Logfia depressa
Herbert L. Mason
1940-3-23
12248
San Bernardino
1/2 mi s Trona; Searles Lake
Comment
UC1099791
Logfia depressa
Herbert L. Mason
1952-4-9
14236 a
San Bernardino
10 mi s Needles
Comment
UC1111564
Logfia depressa
Herbert L. Mason
1940-3-23
12247
San Bernardino
0.5 mi s Trona; Searles Lake
Comment
UC581144
Logfia depressa
H. L. Mason
1935-3-29
8209
Kern
Red Rock Canyon Mojave Desert
Comment
UC581149
Logfia depressa
H. L. Mason
1935-3-28
8182
San Bernardino
road between Barstow and Stoddards Well
Comment
SEINET190350
Logfia filaginoides
H. L. Mason
1933-1
7215
Monterey
Pajaro Hills
Comment
UC1051482
Logfia filaginoides
Herbert L. Mason
1952-4-27
14280
San Benito
San Carlos Canyon
Comment
UC632834
Logfia filaginoides
H. L. Mason
1936-4-26
11093
Lake
Bartlett Mountain
Comment
UC1093862
Logfia gallica
Herbert L. Mason
1947-5-4
13210
Sonoma
near Kenwood; Hood Mountain
Comment
UC912638
Lolium perenne
Herbert L. Mason
1926-5-24
3231
Alameda
Berkeley, Univ. of Calif. campus
Comment
UC634777
Lomatium caruifolium var. caruifolium
H. L. Mason
1925-3-1
1262
San Francisco
Bernal Heights
Comment
UC592171
Lomatium marginatum var. marginatum
H. L. Mason
1928-5-3
4489
El Dorado
at mouth Clark Creek (near bridge of Cosumnes River)
Comment
UC1111592
Lomatium nevadense var. parishii
Herbert L. Mason
1941-7-14
12522
Madera
Sierra Nevada, Yosemite Nat'l Park, Ottoway Lake
2987
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
SEINET196252
Lomatium utriculatum
Herbert L. Mason
1934-3-25
7971
Sacramento
Keithly ranch Rio Linda
Comment
UC566798
Lomatium utriculatum
H. L. Mason
1929-3-29
5138
Contra Costa
above, Marsh Creek Road Clayton
Comment
UC632804
Lonicera cauriana
Herbert L. Mason
1936-7-27
11392
Tuolumne
Gaylor Lakes west of Tioga Pass
3200
Comment
UC632803
Lonicera conjugialis
H. L. Mason
1936-7-6
11160
Mariposa
w Dark Hole (Hetch Hetchy Trail, Research Reserve); Yosemite National Park
2438
Comment
UC1076400
Lonicera interrupta
Herbert L. Mason
1925-7-29
2184
Tuolumne
Hog Ranch Mather
Comment
UC1076402
Lonicera interrupta
H. L. Mason
1925-6-27
2122
Tuolumne
Mather Sierra Nevada Mountains, Yosemite National Park
Comment
UC555530
Lotus formosissimus
H. L. Mason
1928-4-13
4308
Marin
n of San Rafael
Comment
UC555532
Lotus grandiflorus var. grandiflorus
H. L. Mason
1928-5-4
4531
El Dorado
near Pilot Hill; Hastings Creek
Comment
UC555404
Lotus heermannii
H. L. Mason
1931-11-1
5880
Monterey
road between Monterey and Carmel
Comment
UC1178840
Lotus humistratus
Herbert L. Mason
1940-5-3
12253
Merced
2 mi ne Ortigalita Peak; South Coast Ranges, Ortigalita Canyon
304
Comment
UC555544
Lotus scoparius
H. L. Mason
1923-6-23
551
Monterey
Carmel River
Comment
UC555524
Lotus stipularis var. ottleyi
Herbert L. Mason
1927-5-10
3711
Butte
ne of Oroville (Cherokee Mine); Table Mt.
Comment
UC1093957
Lotus stipularis var. ottleyi
Herbert L. Mason
1936-5-15
11112
Mariposa
3 mi above Coulterville
Comment
SEINET3560015
Lotus strigosus
Herbert L. Mason
1938-4-14
11707
Tulare
4 miles east of Exeter
Comment
UC555413
Lotus strigosus
H. L. Mason
1926-4-30
3115
Riverside
1 mi s Temecula; Temecula Canyon
Comment
UC555419
Lotus strigosus
Herbert L. Mason
1926-4-19
2866
San Francisco
San Francisco
Comment
UC555414
Lotus strigosus
H. L. Mason
1923-7-15
602
Tuolumne
Salt Log Meadow Sierra Nevada Mountains, Yosemite National Park
Comment
UC555420
Lotus wrangelianus
H. L. Mason
1929-5-7
5263
Contra Costa
Moraga Ridge
Comment
UC555422
Lotus wrangelianus
Herbert L. Mason
1932-3-19
6821
San Joaquin
2 mi e Midway
Comment
UC1191223
Lupinus
Herbert L. Mason
1937-7-22
11576
Tuolumne
Swamp Lake Sierra Nevada, , Swamp Lake (w of Hetch Hetchy Dam)
1584
Comment
UC775187
Lupinus andersonii
Herbert L. Mason
1941-7-12
12481
Tuolumne
w Hetch Hetchy Valley (Miguel Meadow, Yosemite National Park); Sierra Nevada, Yosemite National Park
1584
Comment
UC1056993
Lupinus bicolor
Herbert L. Mason
1938-4-17
11737
Mariposa
ridge w Mormon Bar; Sierra Nevada foothills, w of Mormon Bar
548
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
UC1178945
Lupinus covillei
Herbert L. Mason
1937-8-1
14842
Tuolumne
Twin Lakes Trail Sierra Nevada, Yosemite National Park (Yosemite National Park)
2743
Comment
UC1212114
Lupinus croceus
Herbert L. Mason
1947-5-17
14759
Siskiyou
5 mi S of Callahan ( on Scott Mountain Road)
Comment
UC1076563
Lupinus formosus
H. L. Mason
1928-10-3
4987
Monterey
Carmel Valley
Comment
YM-YOSE64610
Lupinus latifolius var. columbianus
H. L. Mason
1938-7-28
12030
Tuolumne
MACOMB RIDGE EAST OF TILDEN LAKE
3048
Comment
UC1076227
Lupinus odoratus
Herbert L. Mason
1926-4-26
3018
Los Angeles
Little Rock
Comment
RSA104354
Lupinus peirsonii
H. L. Mason
1926-4-27
3026
Los Angeles
Rock Creek Canyon, lower Pinyon Pine belt
1296
Comment
UC632760
Lupinus stiversii
H. L. Mason
1938-7-6
11861
Tuolumne
between Swamp Lake and Miguel Meadow (Yosemite National Park); Sierra Nevada, , btw Swamp Lake and Mi
1645
Comment
CAS-BOT-BC436725
Luzula comosa var. laxa
Herbert L. Mason; Lawrence W. Reinecke
1937-7-22
11608
Tuolumne
Yosemite National Park, Swamp Lakes, just W of Hetch Hetchy Dam and S 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
CAS-BOT-BC436724
Luzula comosa var. laxa
Herbert L. Mason
1937-7-21
11580
Tuolumne
Yosemite National Park, Miguel Meadow, ca. 3 miles NW of Hetch Hetchy dam
1584
Comment
POM312920
Luzula spicata
H. L. Mason
1936-7-27
11390
Tuolumne
Gaylor Lakes, Yosemite National Park.
3049
Comment
UC1191829
Lycopus americanus
Herbert L. Mason and Verne Grant
1946-8-14
13025
Butte
canal near big pond on Sacramento Outing Club
Comment
UC1191828
Lycopus asper
Herbert L. Mason
1947-8-11
13490
Modoc
w. margin Lower Lake (on Hwy. 81, near boundary between Lassen & Modoc Co.'s)
Comment
CAS-BOT-BC215683
Lycopus uniflorus
Herbert L. Mason; L. W. Reinecke
1937-7-22
11589
Tuolumne
Swamp Lake, just south of Miguel Meadows, just west of Hetch Hetchy Dam, Yosemite National Park
1584
Comment
CAS-BOT-BC215687
Lycopus uniflorus
Herbert L. Mason; L. W. Reinecke
1937-7-22
11589
Tuolumne
Swamp Lake, just south of Miguel Meadows, jsut west of Hetch Hetchy Dam, Yosemite National Park
1584
Comment
GH345133
Lyonothamnus floribundus var. aspleniifolius
H. L. Mason
1927-9-25
4109
Unknown
Hills about Pelican Bay. Santa Cruz Island.
Comment
UC1191567
Lythrum californicum
Herbert L. Mason, S. Galen Smith
1948-8-18
8345
Fresno
San Joaquin, San Joaquin Valley San Joaquin Valley; San Joaquin, San Joaquin Valley
Comment
UCD102992
Lythrum californicum
Herbert L. Mason; S. Galen Smith
1948-8-18
8345
Fresno
San Joaquin.
Comment
UCD102995
Lythrum californicum
Herbert L. Mason
1955-7-14
14636
Contra Costa
1/2 mile E of Antioch Bridge.
Comment
UC1191546
Lythrum hyssopifolia
Herbert L. Mason, Verne Grant
1946-8-6
12973
Butte
2.7 mi n of colusa (between Sacramento River and Butte Creek, Butte Sink); Butte Sink
Comment
CAS-BOT-BC179109
Lythrum tribracteatum
Herbert Louis Mason; Verne Grant
1947-7-10
13324
Modoc
Dorris Reservoir, 2 mi. E of Alturas.
Comment
UC1191585
Lythrum tribracteatum
Herbert L. Mason, Verne Grant
1947-7-10
13324
Modoc
2 mi e of Alturas (Dorris Reservoir); Dorris Reservoir
Comment
UC912324
Madia exigua
H. L. Mason
1932-4-25
6989
Amador
above Ione
Comment
UC912592
Madia exigua
Herbert L. Mason
1932-5-4
7053
Contra Costa
Laundry Farm Oakland Hills
Comment
SEINET11601356
Madia exigua
H. L. Mason
1958-7-16
14371
Nevada
Sage Hen Creek, peat meadow back of stream, one mile west of University of California Trout Laboratory
1981
Comment
CAS-BOT-BC49450
Madia glomerata
Herbert Louis Mason
1947-8-11
13496
Modoc
On Hwy 81, W margin of Lower Lake, near boundary between Lassen and Modoc counties.
Comment
UC1191985
Madia glomerata
Herbert L. Mason
1947-8-11
13496
Modoc
on Hwy 81 near boundary between Lassen and Modoc Counties (w margin of lake); Lower Lake
Comment
UC965582
Madia glomerata
Herbert L. Mason
1952-7-19
14413
Nevada
meadow opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
POM312519
Madia glomerata
H. L. Mason
1947-8-11
13496
Modoc
On Highway 81, west margin of Lower Lake, near boundary between Lassen and Modoc counties.
Comment
UC1191219
Madia radiata
Herbert L. Mason
1952-4-27
14285
San Benito
ca 3 mi from mouth San Carlos Canyon
Comment
UC672092
Maianthemum dilatatum
Herbert L. Mason
1929-4-26
5226
Marin
marsh near summit Light House Rd. Inverness Ridge
Comment
UC1191225
Malacothrix clevelandii
Herbert L. Mason
1935-5-1
8372
Tulare
n Kernville; Kern River, Sequoia National Forest
Comment
UC565539
Malacothrix clevelandii
H. L. Mason
1927-6-11
3748
Los Angeles
Mount Wilson San Gabriel Mountains, Mount Wilson
1219
Comment
UC565551
Malacothrix coulteri
H. L. Mason
1932-4-3
6910
Kern
between Blackwell and Lost Hills
Comment
UC1275794
Malacothrix glabrata
Herbert L. Mason
1963-6-24
15214
Mono
Paoha Island Mono Lake
Comment
SEINET7881866
Malacothrix obtusa
Herbert L. Mason
1952-1
14283
San Benito
ca. 3 miles from mouth of San Carlos Canyon
0
Comment
UC635194
Malosma laurina
H. L. Mason
1923-6-17
468
Santa Barbara
Santa Barbara, Mountain Drive
Comment
UC555510
Malus fusca
H. L. Mason
1932-7-21
7101
Humboldt
Big Lagoon
Comment
UCD116680
Malva sylvestris
Herbert L. Mason
1952-6-10
s.n.
Contra Costa
Waste land near Dwinelle Hall, University of California, Berkeley.
Comment
GH257618
Meconella californica
H. L. Mason
1928-2-22
4162
Unknown
San Bruno Mountains
Comment
UC1178935
Meconella californica
Herbert L. Mason
1953-4-2
14500
Tulare
near Aukland (on Hwy 65)
Comment
CAS-BOT-BC422742
Meconella denticulata
H. L. Mason
1927-6-14
3754
Los Angeles
San Antonio Canyon, San Gabriel Mountains
914
Comment
SEINET12190917
Melaleuca nesophila
E. Mason, Tebbett
1950-1
s.n.
Los Angeles
resort near Los Angeles
Comment
UCD87153
Melica californica
Herbert L. Mason
1940-5-3
12265
Merced
South Coast Ranges. Ortigalita Canyon, 2 miles NE of Ortigalita Peak.
304
Comment
UC912653
Melica torreyana
H. L. Mason
1926-5-26
3238
Alameda
Niles Canyon
Comment
UC634868
Melissa officinalis
H. L. Mason
1925-9-17
2235
Contra Costa
stream in Redwood Canyon Redwood Canyon
Comment
UC1191908
Mentha canadensis
Herbert L. Mason
1947-8-12
13505
Modoc
junction of North and South Forks of Pit River Alturas; jct of North and South Forks of Pit River
Comment
UC634876
Mentha canadensis
H. L. Mason
1925-7-4
2146
Tuolumne
Mather
Comment
UC672670
Mentzelia affinis
H. L. Mason
1930-3-30
5539
San Benito
14 m below Pinnacles; San Benito River Canyon
Comment
UC672662
Mentzelia albicaulis
H. L. Mason
1932-4-1
6876
San Bernardino
road from roosevelt to Muroc Mohave Desert
Comment
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
UC1051446
Mentzelia eremophila
Herbert L. Mason
1952-4-6
14205
Kern
South of Belridge
Comment Read comments Apr 16 2019
SEINET199118
Mentzelia pectinata
Herbert Mason
1952-4-6
14205
Kern
South of Belridge.
Comment
YM-YOSE64872
Menyanthes trifoliata
Harry L. Mason
1938-7-10
11924
Tuolumne
SOUTH ISLAND
Comment
CAS-BOT-BC428955
Micranthes californica
H. L. Mason
1931-3-7
5807
Sonoma
Vine Hill School, 12 miles west of Santa Rosa
Comment
GH414153
Micropus amphibolus
H. L. Mason
1934-4-28
8081
Unknown
Jensen's Ranch, head of Dohrman Creek, four miles west of Healdsburg
Comment
UC632855
Micropus amphibolus
H. L. Mason
1936-5-2
11098
Lake
Bartlett Mountain road four mi above Lucerne
Comment
UC1051485
Micropus californicus var. californicus
Herbert L. Mason
1952-4-27
14281
San Benito
San Carlos Canyon
Comment
UC581112
Micropus californicus var. californicus
H. L. Mason
1934-4-28
8077
Sonoma
head Dohrmann Creek; Jensen's Ranch
Comment
UC672237
Micropus californicus var. californicus
Herbert L. Mason
1928-4-13
4317
Marin
hill n San Rafael
Comment
UC672250
Micropus californicus var. californicus
Herbert L. Mason
1932-4-25
7016
El Dorado
Pilot Hill Sierra Nevada foothills
Comment
UC912263
Micropus californicus var. californicus
Lucile Mason
1932-5-25
Shasta
hill above Redding
Comment
UC912408
Micropus californicus var. californicus
Herbert L. Mason
1929-3-29
5129
Contra Costa
Marsh Creek Road 2 mi e Clayton; Marsh Creek Road
Comment
CAS-BOT-BC348389
Micropus californicus var. californicus
H. L. Mason
1933-5-28
7236
Placer
Tahoe-Colfax road, three to four miles north of Colfax
Comment
CAS-BOT-BC348621
Micropus californicus var. californicus
H. L. Mason
1934-4-28
8077
Sonoma
Jensen's Ranch, head of Dohrmann Creek
Comment
UC672252
Micropus californicus var. californicus
H. L. Mason
1933-5-28
7236
Placer
Tahoe-Colfax road three to four mi Colfax
Comment
UC673615
Micropus californicus var. californicus
Herbert L. Mason
1933-4-21
7188
Santa Clara
junction of Mount Hamilton and Hendrick's Road
Comment
UC673616
Micropus californicus var. subvestitus
H. L. Mason
1933-4-21
7187
Santa Clara
Mount Hamilton Road
Comment
UCD122219
Mimulus aurantiacus
Steve Mason; Pam Rector
1993-4-16
1
Orange
Laguna Niguel, Sea View Park Trail, end of trail behind blue rails and Ceanothus sp. Coastal sage scrub on bluff near housing development overlooking canyon and coastline.
182
Comment
UC673541
Mimulus aurantiacus var. grandiflorus
H. L. Mason
1930-10-25
5767
Monterey
San Antonio River
Comment
UC1039776
Mimulus aurantiacus var. pubescens
Herbert L. Mason
1926-5-2
3190
Riverside
Aguanga Valley
Comment
UC672542
Mimulus bicolor
H. L. Mason
1926-6-1
3364
Calaveras
near Angels Camp
Comment
UC1056979
Mimulus breweri
Herbert L. Mason
1936-7-25
11376
Tuolumne
w Tioga Pass; Sierra Nevada, Yosemite National Park, Gaylor Lakes
3200
Comment
UC672579
Mimulus fremontii var. fremontii
H. L. Mason
1926-4-30
3183
San Diego
Oak Grove
Comment
UC672457
Mimulus grandis
H. L. Mason
June 1930
5651
Sonoma
mouth Gualala River
Comment
UC1191909
Mimulus guttatus
Herbert L. Mason, Verne Grant
1947-7-12
13391
Modoc
several mi s Alturas (irrigation ditch by Jones' Lane, off Highway 395)
Comment
UC1040000
Mimulus layneae
Herbert L. Mason
1937-7-21
11559
Tuolumne
n Hetch Hetchy; Sierra Nevada, Yosemite National Park, Miguel Meadows
Comment
JEPS19313
Mimulus leptaleus
Herbert L. Mason
Jul 7 1939-Jul 8 1958
12157
Nevada
3 mi w Donner Summit
2072
Comment
UC1191131
Mimulus microphyllus
Herbert L. Mason
1953-5-5
14519
Colusa
0.25 above junction of Little Stoney Creek and Trout Creek (at sharp bend in road); Little Stoney Creek drainage
Comment
UC672534
Mimulus microphyllus
H. L. Mason
1923-7-13
593
Tuolumne
Hog Ranch Mather
Comment
UC1039602
Mimulus moniliformis
Herbert L. Mason
1940-7-25
12336
Alpine
hills n Kit Carson Pass
2682
Comment
UC1111595
Mimulus moniliformis
Herbert L. Mason
1941-7-7
12507
Madera
just s Givens Lake trail junction; Sierra Nevada, Yosemite National Park
Comment
UC581162
Mimulus palmeri
H. L. Mason
1935-3-29
8210
Kern
Red Rock Canyon Mojave Desert
Comment
UC1106319
Mimulus primuloides
Herbert L. Mason, B. Fuller, and H. Whisler
1958-6-29
12
Nevada
one mi w University of California Trout Laboratory (12 mi n of Truckee, peat meadow back of stream); Sierra Nevada, Sage Hen Creek
1981
Comment
UC672581
Mimulus pulchellus
H. L. Mason
1925-6-27
2114
Tuolumne
Hog Ranch Mather
Comment
UC1138207
Mimulus rupicola
Herbert L. Mason
1940-3-22
12235
Inyo
Titus Canyon Death Valley National Monument, Grapevine Mountains
Comment
JEPS19554
Mimulus suksdorfii
Herbert L. Mason
1941-7-14
12524
Madera
nw Merced Peak (slopes about Ottoway Lake. headwters of Illilouette Creek); Yosemite National Park, Ottoway Creek drainage
2971
Comment
UC1039603
Mimulus tilingii
Herbert L. Mason
1940-7-25
12332
El Dorado
10.5 mi s Lake Tahoe (e El Dorado Co.); Grass Lake
2377
Comment
UC1039619
Mimulus tilingii
Herbert L. Mason
1940-7-25
12337
Alpine
hills n Kit Carson Peak
2682
Comment
JEPS121
Mimulus torreyi
H. L. Mason
1923-7-14
594
Tuolumne
Mather
Comment
UC672533
Mimulus torreyi
H. L. Mason
1923-7-14
594
Tuolumne
Mather
Comment
UC769970
Mimulus tricolor
Herbert L. Mason
1934-3-25
7943
Sacramento
Keithly Ranch Sacramento Valley, Rio Linda
Comment
UC936205
Minuartia nuttallii subsp. gracilis
H. L. Mason
1936-7-23
11304
Tuolumne
Mount Conness Yosemite National Park
Comment
UC936172
Minuartia obtusiloba
Herbert L. Mason
1936-7-24
11320
Tuolumne
White Mountain Yosemite National Park, Conness Range.
Comment
UC936206
Minuartia obtusiloba
H. L. Mason
1936-7-28
11424 a
Mono
Mount Dana Plateau.
Comment
UC1081520
Mitella breweri
Herbert L. Mason
1936-7-7
11163
Mariposa
Hetch Hetchy Trail w Dark Hole; Sierra Nevada, Yosemite National Park, Research Reserve
2438
Comment
CAS-BOT-BC435102
Mollugo verticillata
Herbert L. Mason
1946-7-27
12953
Lake
Clear Lake, 2-3 miles north of Lakeport
Comment
UCD125244
Monardella sinuata subsp. nigrescens
Herbert Mason; Annetta Carter
1938-5-18
1417
Marin
Point Reyes Peninsula, 12.5 miles from Inverness.
Comment
UC634871
Monardella undulata
H. L. Mason
1923-6-15
408
Santa Barbara
Harris Grade La Purisima Ridge
Comment
UC965638
Monolepis nuttalliana
Herbert L. Mason
1952-7-19
14406
Nevada
meadow opposite U.C. Trout Lab. (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
JEPS35215
Monolopia stricta
H. L. Mason
1932-4-3
b
Kern
5 mi e Lost Hills
Comment
UC672207
Monoptilon bellioides
H. L. Mason
1928-3-10
4245
Riverside
road from Indio to Palm Springs
Comment
UC581110
Monoptilon bellioides
H. L. Mason
1934-3-28
8020
Inyo
above Panamint Valley (w slope of Panamints); Panamint Mts.
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
CAS-BOT-BC445030
Montia fontana
Herbert L. Mason
1940-7-6
12320
Tuolumne
Sierra Nevada, Yosemite National Park. Miguel Meadow, west of Hetch Hetchy Dam
1584
Comment
UC1076529
Montia linearis
Herbert L. Mason
1936-4-11
11059
Calaveras
Creek s of Sheep Ranch (San Antonio Creek); San Antonio Creek
Comment
UC635320
Montia linearis
H. L. Mason
1924-6-18
1052
Plumas
n of Graeagle
Comment
A343901
Morella californica
H. L. Mason
1928-7-11
4893
Unknown
along coast; canyon two miles north of Fort Ross
Comment
CAS-BOT-BC109004
Mucronea californica
H. L. Mason
1923-6-23
553
Monterey
Carmel River, ten miles above Carmel.
Comment
CAS-BOT-BC109005
Mucronea californica
H. L. Mason
1923-6-23
553
Monterey
Carmel River, ten miles above Carmel.
Comment
GH364715
Mucronea californica
H. L. Mason
1923-6-23
544
Unknown
Carmel River, ten miles above Carmel
Comment
UC635072
Mucronea californica
Herbert L. Mason
1923-6-23
544
Monterey
10 mi above Carmel; Carmel River
Comment
UCD86551
Muhlenbergia asperifolia
H. L. Mason
1936-8-1
11493
Mono
Mono Lake.
Comment
CAS-BOT-BC247569
Muhlenbergia asperifolia
Herbert Louis Mason
1947-8-15
13542
Modoc
Mouth of Crane Creek on Willow Ranch.
Comment
UC1111013
Muhlenbergia richardsonis
Herbert L. Mason
1933-9-2
7268
Amador
Silver Lake
Comment
UC1111012
Muhlenbergia rigens
Herbert L. Mason
1930-10-25
5746
Monterey
Headwaters of the Arroyo Seco Santa Lucia Mountains
Comment
UC1076195
Muilla coronata
Herbert L. Mason
1938-4-15
11727
San Bernardino
two mi n Kramer; Mohave Desert
Comment
UC1076544
Myosotis discolor
Herbert L. Mason
1946-5-19
12777
Mendocino
Cleone Lake n. of Fort Bragg; Cleone Lake
Comment
SEINET5535989
Myosotis micrantha
Herbert L. Mason
1946-1
12777
Mendocino
Cleone Lake; N of Fort Bragg
Comment
CAS-BOT-BC392263
Myosurus apetalus
Herbert L. Mason
1953-7-8
14559
Plumas
Six miles southeast of Beckwourth on road from Beckwourth to Loyalton across valley
Comment
CAS-BOT-BC392267
Myosurus apetalus
Herbert L. Mason
1952-7-17
14382
Plumas
Sierra Nevada. Along Western Pacific tracks just south of Beckwourth. Sierra Valley
1524
Comment
UCD96285
Myosurus apetalus
Herbert L. Mason
1953-6-16
14551
Sierra
Sierra County. One mile south of Beckwourth Buttes.
Comment
CAS-BOT-BC83277
Myosurus minimus
Herbert L. Mason
1953-4-5
14509
Colusa
Three miles east of Maxwell.
Comment
CAS-BOT-BC83286
Myosurus minimus
H. L. Mason
1932-3-20
6854
Contra Costa
Briones road.
Comment
CAS-BOT-BC83291
Myosurus minimus
Herbert L. Mason
1952-4-26
14268
Contra Costa
3.5 miles south of Byron.
Comment
CAS-BOT-BC83292
Myosurus minimus
Herbert L. Mason
1952-4-26
14269
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
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
UC1101341
Myosurus minimus
Herbert L. Mason
1952-5-18
14288
Stanislaus
on Hilmar Road e of San Joaquin River (about 1 mi from junction with Crows Landing Road); Hilmar Road
Comment
UC1101342
Myosurus minimus
Herbert L. Mason
1952-5-18
14294
Merced
Santa Fe Grade e of Los Banos; Santa Fe Grade
Comment
UC1101345
Myosurus minimus
Herbert L. Mason
1953-4-4
14505
Lake
playa n of Lower Lake (Mannings Flat); Mannings Flat
Comment
UC1738078
Myosurus minimus
H. L. Mason
1956-5-24
14289 A-2
Stanislaus
6 mi NE of Crows Landing ( at intersection of Hilmar and Morgan Ave., near abandoned gas well.)
Comment
UC1738084
Myosurus minimus
H. L. Mason
1957-3-15
14268 B-4
Contra Costa
3 mi S of Byron ( on road to Herdlyn)
Comment
UC1738086
Myosurus minimus
H. L. Mason
1957-3-15
14268 B-2
Contra Costa
3 mi S of Byron ( on road to Herdlyn)
Comment
UC634957
Myosurus minimus
H. L. Mason
1931-4-26
5861
Monterey
Pajaro Hills
Comment
UC634962
Myosurus minimus
H. L. Mason
1931-3-26
Alameda
s en of Grizzly Peak; Berkeley Hills
Comment
CAS-BOT-BC83290
Myosurus minimus
Herbert L. Mason
1952-4-14
14264
Contra Costa
3.5 miles south of Byron.
Comment
JEPS9750
Myosurus minimus
H. L. Mason
1931-3-26
Alameda
n of Fish Ranch (a mile in soft chaparrral on the s end of Grizzly Peak ridge); Berkelley Hills
Comment
POM312434
Myosurus minimus
H. L. Mason
1953-4-4
14504
Lake
Stalked, spike tapering. On obsidian rubble, Playa north of Little Lake, Mannings Flat
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
UC1101330
Myosurus sessilis
Herbert L. Mason
1952-4-14
14263
Contra Costa
3.5 mi s of Byron
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
UC1101333
Myosurus sessilis
Herbert L. Mason
1952-4-14
14264
Contra Costa
3.5 mi s of Byron
Comment
POM312428
Myosurus sessilis
H. L. Mason
1952-4-26
14270
Contra Costa
Vernal Pool, 3.5 miles S of Byron
Comment
UC672612
Myrica californica
Herbert L. Mason
1928-10-21
4997
Mendocino
Fort Bragg
Comment
UCR139437
Myrica hartwegii
H. L. Mason
1936-7-11
11209
Mariposa
Sierra Nevada Mtns., Big Creek, a tributary of the South Fork of the Merced River, near Wawona
1402
Comment
UC1178886
Myriophyllum hippuroides
Herbert L. Mason
1938-8-26
12074
San Joaquin
Trappers Slough, Roberts Island
Comment
UC1101489
Myriophyllum hippuroides
Herbert L. Mason and S. Galen Smith
1948-8-10
8314
Merced
Mendota Pool, at entrance of Firebaugh canal, W side.
Comment
CAS-BOT-BC456162
Najas guadalupensis
Herbert L. Mason; Verne Grant
1946-8-15
13008
Colusa
Two miles west of Colusa on Williams highway by bridge
Comment
CAS-BOT-BC456183
Najas guadalupensis
Herbert L. Mason; S. Galen Smith
1948-7-30
8254
Merced
About 7 miles northeast of junction of Merced and San Joaquin Rivers
Comment
UCD138158
Najas guadalupensis subsp. guadalupensis
Herbert L. Mason; Verne Grant
1946-8-15
13053
Butte
#833 Irrigation Ditch, near caretaker's house, Greylodge Game Refuge, Butte Sink.
Comment
UC1220405
Najas marina
Herbert L. Mason
1963-4-10
15204
Inyo
Death Valley National Monument, Furnace Creek Ranch Furnace Creek Ranch Furnace Creek Ranch; Death Valley National Monument, Furnace Creek Ranch
Comment
UC672365
Nama demissa var. demissa
Herbert L. Mason
1926-4-26
3002
Los Angeles
Little Rock
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
UC1051494
Nama depressa
Herbert L. Mason
1952-4-11
14251
San Bernardino
Black Lava Bed just e of Daggett; Black Lava Bed
Comment
UC791045
Nama rothrockii
Herbert L. Mason
1948-9-3
13632
Inyo
Onion Valley road
2651
Comment
UCD139966
Narthecium californicum
Herbert L. Mason
1950-7-15
14053
Trinity
Scott Mountain.
Comment
CAS-BOT-BC516033
Narthecium californicum
Herbert 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
SEINET190361
Navarretia atractyloides
Herbert L. Mason
1941-7-21
12471
Santa Barbara
Mesa south of Casmalia
Comment
UC1178931
Navarretia atractyloides
Herbert L. Mason
1953-6-8
14530
Lake
1 mi n Lower Lake
Comment
UC1199830
Navarretia atractyloides
Herbert L. Mason
1946-6-8
12844
Santa Barbara
s side Big Pine Mountain (Bluff Camp)
Comment
UC907795
Navarretia atractyloides
Herbert L. Mason
1926-6-6
3374
Santa Cruz
near Felton
Comment
UC909051
Navarretia atractyloides
Herbert L. Mason
1927-7-27
3978
Santa Cruz
n w end Big Basin (Boulder Creek road)
Comment
UC909056
Navarretia atractyloides
Herbert L. Mason
1927-7-31
3998
Santa Cruz
hills s Mt. Herman
Comment
UC700272
Navarretia bakeri
H. L. Mason
1945-6-28
12599
Lake
1.5 mi sw Lower Lake (in vernal pool); ; 1.5 mi. SW of Lower Lake, Lake Co.
Comment
UC1178897
Navarretia breweri
Herbert L. Mason
1947-7-8
13306
Modoc
Cedar Pass, summit of Warner Range Warner Range
1920
Comment
UC1186140
Navarretia capillaris
Herbert L. Mason
1938-7-29
12049
Tuolumne
Saurian Crest northern Yosemite National Park, Saurian Crest (northern part of Yosemite National Park)
Comment
CAS-BOT-BC230260
Navarretia cotulifolia
Herbert L. Mason
1934-4-30
8111
Napa
Tributary of Putah Creek, Pope Valley
Comment
SEINET196212
Navarretia cotulifolia
Herbert L. Mason
1934-4-30
8111
Napa
Tributary of Putah Creek, Pope Valley
Comment
UC963811
Navarretia cotulifolia
H. L. Mason
1932-4-17
6954
Santa Clara
se of Gilroy (Miller and Lux ranch)
Comment
SEINET196215
Navarretia divaricata
Herbert L. Mason
1941-7-12
12480 a
Tuolumne
Yosemite National Park; Miguel Meadows, Yosemite National Park
1890
Comment
UC1186142
Navarretia divaricata
Herbert L. Mason
1938-7-6
11860
Tuolumne
e of Miguel Meadow (dry ridge between Swamp Lake Miguel Meadow); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC908395
Navarretia divaricata
Herbert L. Mason
1946-6-8
12852
Santa Barbara
Big Pine Mountain, summit of road San Rafael Mountains
Comment
UC9637755
Navarretia divaricata
Herbert L. Mason
Jul 7 1939-Jul 8 1939
12150
Nevada
3 mi w Donner Summit
2072
Comment
UCD39813
Navarretia divaricata
Herbert L. Mason
1946-6-8
12852
Santa Barbara
San Rafael Mountains, Big Pine Mountain, summit of road.
Comment
SEINET197695
Navarretia divaricata
Herbert L. Mason
1952-7-16
14360
Nevada
One mile west of the University of California Trout Laboratory, Sage Hen Creek
1981
Comment
SEINET8729361
Navarretia divaricata
Herbert L. Mason
1941-1
12480 a
Tuolumne
Miguel Meadows, Yosemite National Park.
1890
Comment
UC963777
Navarretia divaricata
Herbert L. Mason
1926-5-31
3353
Calaveras
1.2 mi sw Calaveras Big Trees (on Road)
Comment
UC1056978
Navarretia divaricata subsp. divaricata
Herbert L. Mason
1936-7-12
11231
Mariposa
Peregoy Meadow, Glacier Point road Sierra Nevada, Yosemite National Park
2255
Comment
UC665600
Navarretia hamata subsp. parviloba
Herbert L. Mason
1941-7-1
12468
San Luis Obispo
n end Nipomo mesa; Nipomo
76
Comment
CAS-BOT-BC230308
Navarretia heterandra
Herbert L. Mason
1946-5-30
12791
Lake
Locomono Creek near Middletown
Comment
UC908127
Navarretia heterandra
Herbert L. Mason
1946-5-30
12791
Lake
near Middletown; Locomono Creek
Comment
UC908165
Navarretia intertexta
Herbert L. Mason
1946-5-30
12798
Lake
3 mi e Middletown
Comment
UC908178
Navarretia intertexta
Herbert L. Mason
1923-7-15
603
Tuolumne
3 mi w Mather; Salt Log
1371
Comment
UC908880
Navarretia intertexta
Herbert L. Mason
1946-6-8
12856
Santa Barbara
Big Pine Mountain, summit of road San Rafael Mountains
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
UCD48473
Navarretia intertexta
Herbert L. Mason
1940-5-21
12295
Sonoma
Head of Maacama Creek, Knights Valley, Sonoma County.
Comment
UCD48479
Navarretia intertexta
H. L. Mason
1945-5-12
12580
Lake
3 miles north of Lower Lake, beds of vernal pools, Lake County, California.
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
UC965517
Navarretia intertexta subsp. propinqua
Herbert L. Mason
1952-7-16
14362
Nevada
1 mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC965525
Navarretia intertexta subsp. propinqua
Herbert L. Mason
1952-7-17
14377
Sierra
between Sierraville and Loyalton; Sierra Nevada, Sierra Valley
1524
Comment
UC965526
Navarretia intertexta subsp. propinqua
Herbert L. Mason
1952-7-17
14376
Sierra
between Sierraville and Loyalton; Sierra Nevada, Sierra Valley
1524
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
HSC17139
Navarretia jepsonii
H. L. Mason
1945-6-28
12595
Lake
Just below bridge E of Middletown
Comment
SEINET197559
Navarretia jepsonii
Herbert L. Mason
1952-6-19
14307
Colusa
Mendocino National Forest; Black Diamond Ridge.
610
Comment
SEINET197686
Navarretia jepsonii
Herbert L. Mason
1945-6-28
12595
Lake
Just below bridges east of Middletown.
Comment
UC908621
Navarretia jepsonii
Herbert L. Mason
1946-5-30
12814
Colusa
about 1 mi e Lake County line (w Colusa County); Leesville Grade
Comment
UCD48317
Navarretia leucocephala subsp. bakeri
Herbert L. Mason
1934-4-28
8094
Sonoma
In fields; highway between Healdsburg and Santa Rosa, Sonoma County, California.
Comment
GH403744
Navarretia linearifolia
H. L. Mason
1950-7-15
14049
Unknown
In wet bog: Summit of grade, Scott Mountain
Comment
UC908262
Navarretia linearifolia subsp. pinnatisecta
Herbert L. Mason
1945-6-29
12612
Lake
near Kelseyville; wash of Kelsey Creek, near Kelseyville
Comment
UC908641
Navarretia mellita
Herbert L. Mason
1945-6-28
12609
Lake
2.5 mi s Kelseyville
Comment
CAS-BOT-BC213907
Navarretia pauciflora
H. L. Mason
1945-5-12
12583
Lake
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
UCD48614
Navarretia prostrata
Herbert L. Mason
1952-5-18
14292
Merced
Santa Fe grade east of Los Banos, San Joaquin Valley, Merced County.
Comment
CAS-BOT-BC232652
Navarretia pubescens
Herbert L. Mason
1935-5-30
8330
Lake
Between Lower Lake and Knoxville Mine
Comment
SEINET196697
Navarretia pubescens
Herbert L. Mason
1935-5-30
8330
Lake
Between Lower Lake and Knoxville Mine.
Comment
SEINET196694
Navarretia tagetina
Herbert L. Mason
1934-4-30
8110
Napa
Tributary of Putah Creek, Pope Valley.
Comment
UC908385
Navarretia tagetina
Herbert L. Mason
1945-6-28
12597
Lake
3 mi e Middletown
Comment
UC1191853
Navarretia viscidula
Herbert L. Mason
1950-6-9
14803
Lake
Highland Spring Road
Comment
UC908101
Navarretia viscidula
H. L. Mason
1926-5-30
3340
Amador
hills s of Ione; Sierra Nevada
Comment
UC635583
Nemacladus interior
H. L. Mason
1923-7-12
577
Tuolumne
Mather; Sierra Nevada Mountains, Yosemite National Park
Comment
SEINET10461179
Nemacladus interior
Mason
1936-7-11
Mason 11198
Mariposa
Wawona
1250
Comment
SEINET10461220
Nemacladus interior
Mason
1928-6-28
Mason 4866
Mariposa
Wawona
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
SEINET10972607
Nemacladus longiflorus
Mason
1926-4-30
Mason 3177 a
San Diego
Oak Grove
Comment
UC1051455
Nemacladus orientalis
Herbert L. Mason
1952-4-7
14211
Riverside
Palm Canyon; Palms Springs
Comment
UC635593
Nemacladus pinnatifidus
H. L. Mason
April 1926
3177
San Diego
Oak Grove
Comment
SEINET10461043
Nemacladus ramosissimus
Mason
1935-4-30
Mason 8281 b
San Bernardino
Poison Canyon
Comment
SEINET3815165
Nemacladus rigidus
Herbert L. Mason
1935-5-30
10000
Napa
Four miles N of Knoxville Mines
Comment
UC635589
Nemacladus secundiflorus var. secundiflorus
H. L. Mason
1927-5-16
3736
San Luis Obispo
Atascadero
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
UC1540447
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
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
UC592189
Nemophila menziesii
H. L. Mason
1925-3-7
1287
Alameda
bluff above stream junction one-half mi sw Sunol; sw of Sunol
Comment
UC595053
Nemophila pedunculata
H. L. Mason
1938-5-1
11745
Lake
Barlett Springs Bartlett Springs
Comment
UC595054
Nemophila pedunculata
H. L. Mason
1938-5-1
11744
Lake
Barlett Springs Bartlett Springs
Comment
UC672359
Nemophila pedunculata
Herbert L. Mason
1926-3-21
2773
Lake
St. Helena Creek St. Helena Creek (along streams)
Comment
UC592136
Nemophila pulchella var. gracilis
H. L. Mason
1929-3-24
5102
Madera
at junction of Yosemite Road e Madera (between Bates Station and O'Neals); e of Madera at jct of Yosemite Road
Comment
UC632809
Nemophila spatulata
H. L. Mason
1936-7-12
11225
Mariposa
Peregoy Meadow Yosemite National Park, Glacier Point Road, Peregoy Meadow (Glacier Point road, Yosemite National Park)
2255
Comment
YM-YOSE65374
Nemophila spatulata
Harry L. Mason
1938-7-11
11941
Tuolumne
MIGUEL MEADOW
1584
Comment
UC570705
Nicotiana clevelandii
H. L. Mason
1928-3-10
4211
Riverside
Hidden Springs; Coachella Mountains
Comment
UC570708
Nicotiana quadrivalvis
Herbert L. Mason
1926-4-30
3147
San Diego
Oak Grove Palomar Mt. (base of Palomar Mt)
Comment
UC570711
Nicotiana quadrivalvis
H. L. Mason
1926-1-1
2582
Lake
grade between Elk Mountain and Upper Lake
Comment
UC1179022
Nolina parryi
Herbert L. Mason
1935-4-30
8349
Kern
Walker Pass
Comment
A356882
Notholithocarpus densiflorus
H. L. Mason
1934-9-3
Unknown
White plains, three miles east of Mendocino City
Comment
UC635508
Nuphar lutea subsp. polysepala
H. L. Mason
1924-6-20
1089
Plumas
in a lily pond near Greagle Lodge
Comment
YM-YOSE65037
Nuphar polysepala
H. L. Mason
1938-7-10
11927
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND
Comment
CAS-BOT-BC140429
Oemleria cerasiformis
H. L. Mason
1921-7-14
s.n.
San Mateo
Pescadero Creek
Comment
UC1093960
Oemleria cerasiformis
Herbert L. Mason
1936-3-6
10987
San Luis Obispo
11 mi w San Luis Obispo (Pecho hills)
Comment
UC555685
Oemleria cerasiformis
H. L. Mason
1923-6-22
533
San Luis Obispo
Summit Cuesta Grade
Comment
UC1191953
Oenanthe sarmentosa
Herbert L. Mason
1946-6-9
12870
San Luis Obispo
between mouth of Santa Maria R. and Oceano (Dune Lakes); Dune Lakes
Comment
CAS-BOT-BC427455
Oligomeris linifolia
H. L. Mason
1926-4-25
2905
Orange
Five miles south of Laguna Beach
Comment
UC1076288
Orobanche fasciculata
Herbert L. Mason
1927-6-15
3784
San Bernardino
San Gabriel Mountains. Mount San Antonio.
Comment
UC634780
Orogenia fusiformis
H. L. Mason
1933-5-28
7237
Placer
Lower Truckee R. Meadows
Comment
CAS-BOT-BC355779
Osmadenia tenella
Herbert L. Mason
1925-4-25
2903
Orange
5 miles south of Laguna
Comment
UC965548
Osmorhiza occidentalis
Herbert L. Mason
1952-7-19
14427
Nevada
meadow opposite University of California Trout Laboratory; Sage Hen Creek
1981
Comment
UC592175
Oxypolis occidentalis
H. L. Mason
1923-7-25
645
Tuolumne
Lodge Meadow Sierra Nevada Mountains, Yosemite National Park, Mather
Comment
UC641798
Oxyria digyna
H. L. Mason
1936-7-23
11292
Tuolumne
alpine slopes Mount Conness; Sierra Nevada, slopes of Mount Conness
Comment
UC912545
Packera eurycephala var. eurycephala
Herbert L. Mason
1934-4-30
8107
Napa
7 mi above Monticello; Pope Canyon
Comment
UC912546
Packera eurycephala var. eurycephala
Herbert L. Mason
1934-4-30
8108
Napa
Pope Canyon
Comment
UC912483
Packera greenei
Herbert L. Mason
1930-6-1
5682
Lake
St. Helena Creek, slopes of Mount St. Helena Mount St. Helena
Comment
UC635426
Paeonia californica
H. L. Mason
1923-6-15
403
Santa Barbara
Harris Grade La Purisma Range
Comment
UC635428
Paeonia californica
H. L. Mason
1926-4-30
3149
San Diego
Oak Grove
853
Comment
UC1108826
Panicum acuminatum var. acuminatum
Herbert L. Mason
1938-7-22
11968
Tuolumne
n Hetch Hetchy Valley (Vernon Trail Lake); Sierra Nevada, Yosemite National Park
1981
Comment
UC1101587
Panicum capillare
Herbert L. Mason
1946-7-27
12952
Lake
2-3 mi n Lakeport (Clear Lake); Clear Lake
Comment
SACT001636
Panicum huachucae
Herbert Mason
1949-8-19
Merced
Sandy river bottom.
Comment
UC1111579
Parietaria hespera var. californica
Herbert L. Mason
1929-5-5
5260
Contra Costa
Nortonville
Comment
UC1027193
Parvisedum pentandrum
Herbert L. Mason
1953-5-4
Colusa
Little Stony Creek Road 0.25 mi above junction of Little Stony Creek and Trout Creek (Inner North Coast Ranges); , Little Stony Creek Road
609
Comment
UC571849
Parvisedum pumilum
H. L. Mason
1935-5-5
3645
Napa
3 mi s of Napa City
Comment
GH378519
Paxistima myrsinites
H. L. Mason
1929-5-18
5329
Unknown
hills along Shasta Creek Canyon
Comment
UC635621
Paxistima myrsinites
H. L. Mason
1929-5-18
5329
Siskiyou
hills along Shasta Creek Canyon Shasta Creek Canyon
Comment
UC573064
Pectocarya penicillata
H. L. Mason
5133
Contra Costa
2 mi above Clayton (Marsh Creek Rd)
Comment
CAS-BOT-BC69293
Pellaea andromedifolia
H. L. Mason; H. A. Borthwick
1921-3-20
s.n.
Santa Clara
Guadalupe Canyon
Comment
UC672629
Pellaea mucronata var. californica
Herbert L. Mason
1927-6-15
3778
San Bernardino
Mt Baldy; San Gabriel Mts
2590
Comment
UC565585
Penstemon centranthifolius
H. L. Mason
1926-4-27
3032
Los Angeles
Rock Creek San Gabriel Mountains, Rock Creek
Comment
UC565586
Penstemon heterophyllus
H. L. Mason
1929-10-12
5482
San Luis Obispo
four and three-tenths mi w Atascadero; Atascadero Creek, w of Atascadero
Comment
UC565591
Penstemon newberryi var. newberryi
Herbert L. Mason
1923-7-21
631
Tuolumne
Hetch Hetchy Valley - Canyon Ranch
Comment
UC565598
Penstemon newberryi var. newberryi
Herbert L. Mason
1924-6-18
1065
Plumas
road between Graeagle and Gold Lake; road between Graeagle and Gold Lake
Comment
JEPS11384
Penstemon speciosus
H. L. Mason
1924-6-26
1045
Plumas
Blairsden
Comment
JEPS17274
Pentachaeta aeolica
H. L. Mason and J. R. Sweeney
1957-4-19
San Benito
slope near mouth mouth of Clear Creek; upper end of Hernandez Valley
762
Comment
UC672241
Pentachaeta alsinoides
Herbert L. Mason
1931-4-25
5825
Alameda
road between Marsh Creek and Livermore
Comment
UC912264
Pentachaeta exilis
Herbert L. Mason
1933-4-21
7192
Santa Clara
lower slopes Mount Hamilton
Comment
UC566849
Perideridia californica
Herbert L. Mason
1932-4-17
6963
Santa Clara
Pacheco Pass Road; e base
Comment
CAS-BOT-BC413675
Persicaria amphibia
Herbert L. Mason
1937-7-22
11616
Tuolumne
Swamp Lakes, just west of Hetch Hetchy Dam and south of MIguel Meadows, Yosemite National Park
1584
Comment
CAS-BOT-BC418861
Persicaria hydropiperoides
Herbert L. Mason; Verne Grant
1946-8-14
13027
Butte
Butte Sink. On Sacramento Outing Club
Comment
CAS-BOT-BC419003
Persicaria lapathifolia
Herbert L. Mason
1930-8-1
5718
Lake
Clear Lake
Comment
CAS-BOT-BC419350
Persicaria punctata
Herbert L. Mason; S. Galen Smith
1948-8-9
8301
Merced
1 mile west of Los Banos
Comment
UC566779
Petunia parviflora
H. L. Mason
1929-10-13
5507
Monterey
Bradley Salinas River (bridge over Salinas River)
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
UC604429
Phacelia breweri
H. L. Mason
1938-5-3
11750
Contra Costa
trail between Juniper Camp and Deer Flat; Mount Diablo
990
Comment
UC672338
Phacelia breweri
Herbert L. Mason
1933-4-21
7205
Santa Clara
n Packard Ridge (headwaters of creek); Alameda Creek
Comment
UC672400
Phacelia cicutaria var. cicutaria
Herbert L. Mason
1930-4-1
5555
Calaveras
hills w San Andreas
Comment
UC672399
Phacelia cicutaria var. hispida
Herbert L. Mason
1926-4-30
3136
Riverside
2 mi s Temecula
Comment
SFV16119
Phacelia ciliata
S. Mason, J. Artero
1995-4-1
49
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
UC672410
Phacelia ciliata var. ciliata
Herbert L. Mason
1929-3-31
5139
Contra Costa
Briones Road Hills northeast of Mount Diablo
Comment
UC672412
Phacelia ciliata var. ciliata
H. L. Mason
1932-3-19
6830
San Joaquin
2 mi e Midway
Comment
UC672402
Phacelia crenulata var. ambigua
Herbert L. Mason
1928-3-10
4226
Riverside
Hidden Spring Canyon Colorado Desert, Coachella Mountains
Comment
UC1178992
Phacelia curvipes
Herbert L. Mason
1935-4-30
8354
Kern
Walker Pass.
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
UC672423
Phacelia distans
Herbert L. Mason
1928-3-11
4239
Riverside
Desert Flats near Indio; Colorado Desert
Comment
UC672424
Phacelia distans
Herbert L. Mason
1926-3-14
2724
Napa
sw slope Mt. St. Helena
Comment
UC672331
Phacelia divaricata
Herbert L. Mason
1925-4-12
1328
Marin
Pipe line trail Mt. Tamalpais
Comment
SFV16104
Phacelia fremontii
S. Mason, et al.
1995-4-23
51
Los Angeles
Mojave Desert Little Rock. Mount Emma Road, 0.8 miles above Fort Tejon Road on northern foothills of Transverse Range.
915
Comment
UCSB70475
Phacelia fremontii
Mason, Herbert; Mason, Renee; Robbins, G.
1956-3-29
Kern
Near Schneider Piute Ranch, along road between Loraine and Walker Basin, 6 mi. n. of Sand Canon Store and 5 mi. s. of Piute Mtn. Lookout junction
1097
Comment
UC1191850
Phacelia humilis
Herbert L. Mason
1948-7-18
13620
Modoc
Cedar Pass Warner Mountains
Comment
UC1093946
Phacelia hydrophylloides
Herbert L. Mason
1941-7-14
12517
Madera
Ottoway Park Sierra Nevada, Yosemite National Park
2987
Comment
UC672384
Phacelia imbricata
Herbert L. Mason
1928-4-26
4388
Contra Costa
slopes to n of Lake Temescal; Berkeley Hills
Comment
UC753517
Phacelia imbricata
Herbert L. Mason
1946-6-7
12820
Santa Barbara
Escondido Spring Santa Ynez Range
609
Comment
UC936144
Phacelia longipes
Herbert L. Mason
1949-4-25
14013
Ventura
7 mi ne Wheelers Hot Springs
Comment
UC672347
Phacelia malvifolia
Herbert L. Mason
1927-7-30
3984
Monterey
Cypress Point
Comment
UC672393
Phacelia minor
Herbert L. Mason
1926-4-28
3102
San Bernardino
Box S Ranch Mohave Desert
Comment
UC1051496
Phacelia pachyphylla
Herbert L. Mason
1952-4-11
14248
San Bernardino
just e Daggett; Black Lava Bed
Comment
UC1076418
Phacelia pachyphylla
Herbert L. Mason
1955-4-30
8280
Inyo
Poison Canyon
Comment
UC672389
Phacelia parryi
Herbert L. Mason
1926-4-25
2911
Orange
5 mi s Laguna
Comment
GH401012
Phacelia phacelioides
H. L. Mason
1938-5-3
11749
Unknown
Trail between Juniper Camp and Deer Flat, Mount Diablo
Comment
UC1077100
Phacelia racemosa
Herbert L. Mason
1938-7-17
11958
Mariposa
Big Oak Flat Rd Sierra Nevada, Yosemite National Park, Tamarack Flat
1950
Comment
CAS-BOT-BC154398
Phacelia ramosissima var. eremophila
H. L. Mason
1939-7-18
12174
El Dorado
north side of Luther Pass, one mile west of Grass Lake Meadow
2346
Comment
UC1178995
Phacelia ramosissima var. subglabra
Herbert L. Mason
1937-7-26
14828
Tuolumne
n Hetch Hetchy Dam; Yosemite National Park, Mahan Peak
2438
Comment
SD46100
Phacelia rotundifolia
Herbert L. Mason
1954-4-11
14254
San Bernardino
Black Lavas north of Pisgah Crater, in crevices of lava.
Comment
UCD120692
Phacelia suaveolens
Herbert L. Mason
1940-5-10
14805
Lake
Obsidian pond, north of Lower Lake.
Comment
UCD120733
Phacelia tanacetifolia
Steve Mason; Joey Artero
1993-4-24
15
San Luis Obispo
San Luis Obispo County: Carrizo Plain Natural Area, NE side road off Elkhorn Rd., 1.2 mi. S of Elkhorn and Simmler Roads' junction, up road on left roadside past washing machine.
640
Comment
UC764435
Phacelia thermalis
Herbert L. Mason
1947-8-9
13481
Modoc
Porcupine Valley, on road to Antelope Reservoir
Comment
CAS-BOT-BC250709
Phalaris paradoxa
Herbert L. Mason
1940-5-3
12252
Fresno
San Joaquin Valley. Lyon and Hoag Ranch, nine miles southeast of South Dos Palos
30
Comment
SEINET11671688
Phalaris paradoxa
H. L. Mason
1940-1
12252
Fresno
San Joaquin Valley, Lyon and Hoag Ranch, 9 mi SE of South Dos Palos
30
Comment
SEINET197653
Phalaris paradoxa
H. L. Mason
1940-5-3
12252
Fresno
San Joaquin Valley Lyon & Hoag Ranch 9 mi SE of S Dos Palos
30
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
UC1100415
Phleum pratense
Herbert L. Mason and Verne Grant
1947-7-9
13303
Lassen
5 mi e Bieber (irrigation ditch)
Comment
UC1186147
Phlox diffusa
Herbert L. Mason
1938-7-25
12000
Tuolumne
e base Mahan Peak; Sierra Nevada, Yosemite National Park, Deep Lake
Comment
UC1186132
Phlox douglasii subsp. rigida
Herbert L. Mason
1926-5-30
3309
El Dorado
hillslope back of Emerald Bay; Lake Tahoe
Comment
UC908029
Phlox gracilis
Herbert L. Mason
1928-7-4
4869
Tuolumne
Tuolumne Meadows
Comment
UC908391
Phlox gracilis
Herbert L. Mason
1929-3-1
5013
Monterey
10 mi e Carmel Mission; Carmel River
Comment
UC1111010
Phlox gracilis
Herbert L. Mason
1936-7-7
11165
Mariposa
w of Dark Hole (n of Yosemite Valley, Research Reserve); Sierra Nevada, Yosemite National Park
2438
Comment
UC908224
Phlox gracilis
Herbert L. Mason
1926-3-22
2791
Napa
between Calistoga and Petrified Forest
Comment
UC1186135
Phlox speciosa subsp. occidentalis
Herbert L. Mason
1927-5-10
3729
Yuba
near Dobbins
Comment
UC1039625
Pholisma arenarium
Herbert L. Mason
1941-7-1
12469
San Luis Obispo
sand hills s Oceano
Comment
UC592183
Pholistoma membranaceum
H. L. Mason
1929-3-23
5080
Tulare
3 mi. above Springville (Middle Tule R.); Middle Tule R.
Comment
UC1039600
Phoradendron
Herbert L. Mason
1923-6-17
474
Ventura
Ojai
Comment
UC1039601
Phoradendron densum
Herbert L. Mason
1926-1-2
2607
Napa
Mt. St. Helena, Toll House Canyon
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
CAS-BOT-BC250991
Phragmites australis
Herbert L. Mason
1946-9-12
13123
San Joaquin
Borden Highway halfway between Old River - Middle River
Comment
UC1191813
Phyla lanceolata
Herbert L. Mason and Verne Grant
1946-8-14
13033
Butte
Sacramento Outing Club Butte Sink (canal near big pond)
Comment
UC571045
Phyllodoce breweri
H. L. Mason
1928-7-5
4876
Mono
Tioga Mines
Comment
UC571046
Phyllodoce breweri
H. L. Mason
1924-6-19
1074
Plumas
Bear Lake
Comment
CAS-BOT-BC452067
Phyllospadix torreyi
Herbert L. Mason
1927-11-27
4145
Santa Barbara
Carpinteria
Comment
UC985937
Physalis lancifolia
Herbert L. Mason
1945-9-19
12727
Sutter
e side Butte Creek (West Butte Road)
Comment
UCD126761
Physalis lancifolia
Herbert L. Mason
1945-9-19
12727
Sutter
West Butte Road on the east side of Butte Creek.
Comment
UC555512
Physocarpus capitatus
H. L. Mason
Jun 1930
5642
Sonoma
Gualala River, mouth
Comment
UC1061648
Picea sitchensis
Herbert L. Mason
Sept. 1930
Mendocino
Fort Bragg
Comment
UC1083376
Pinus
Herbert L. Mason
1941-3-27
12388
Santa Barbara
summit of Harris Grade Purisima Ridge (Purisima Ridge, sw Santa Barbara County)
Comment
UC1191140
Pinus
Herbert L. Mason
1953-7-21
14565
Mono
e of Campito Mountains; White Mountains
2895
Comment
POM264591
Pinus albicaulis
H. L. Mason
1936-8-6
11519
Mono
Hills between Saddlebag Lake and Conness Glacier.
3201
Comment
RSA31091
Pinus albicaulis
H. L. Mason
1936-8-6
11519
Mono
Hills between Saddlebag Lake and Conness Glacier.
3201
Comment
UC665719
Pinus albicaulis
Herbert L. Mason
1936-8-6
11519
Mono
hills between Saddlebag Lake and Conness Glacier; Sierra Nevada
3200
Comment
SEINET4457228
Pinus albicaulis
H. L. Mason
1936-1
11519
Unknown
Comment
UC1191116
Pinus attenuata
Herbert L. Mason
1931-11-1
5894
Santa Cruz
canyon above Greyhound Rock; Ano Nueva Point
Comment
A357743
Pinus contorta
H. L. Mason
1934-9-3
8148
Unknown
Just north of the town of Point Arena, Mendocino County
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
NY49515
Pinus contorta
H. L. Mason
1934-9-3
8146
Mendocino
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
UC1083307
Pinus contorta subsp. bolanderi
Herbert L. Mason
1928-8-25
4918
Mendocino
Noyo
Comment
UC1093915
Pinus contorta subsp. bolanderi
Herbert L. Mason
1932-8-26
7166
Mendocino
at Mendocino City; Pine Barrens
Comment
UC665720
Pinus contorta subsp. bolanderi
Herbert L. Mason
1934-9-3
8146
Mendocino
3 mi e Mendocino City; White Plains
Comment
UC1076347
Pinus contorta subsp. murrayana
Herbert L. Mason
1929-10-4
5476
Placer
Placerville road summit Johnson Pass
Comment
POM264566
Pinus contorta var. contorta
H. L. Mason
1934-9-3
8146
Mendocino
White Plains, 3 miles east of Mendocino City
Comment
UC1061639
Pinus muricata
Herbert L. Mason
Marin
Inverness
Comment
UC1083158
Pinus muricata
Herbert L. Mason
1927-9-25
4097
Santa Barbara
Buena Vista Canyon along roadway Santa Cruz Island, Buena Vista Canyon, Buena Vista Creek (in the forest of Buena Vista Creek)
Comment
UC1083374
Pinus muricata
Herbert L. Mason
1941-3-27
12389
Santa Barbara
summit Harris Grade; sw Santa Barbara County, Purisima Ridge, Harris Grade
Comment
UC573058
Plagiobothrys acanthocarpus
H. L. Mason
1932-3-19
6828
San Joaquin
2 mi e Midway (Tracy highway)
Comment
UC573063
Plagiobothrys canescens
H. L. Mason
1929-3-23
5084
Tulare
3 mi above Springville; Middle Tule River
Comment
UC573081
Plagiobothrys infectivus
H. L. Mason
1932-3-19
6829
San Joaquin
Tracy Hwy 2 mi e Midway
Comment
POM312624
Plagiobothrys mollis
H. L. Mason
1947-8-9
13475
Modoc
East side of Fairchild Swamp, north of Alturas
Comment
UC1191836
Plagiobothrys mollis
Herbert L. Mason, Verne Grant
1947-7-10
13333
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
CAS-BOT-BC58728
Plagiobothrys mollis var. mollis
Herbert Louis Mason; Verne Grant
1947-7-12
13395
Modoc
By Jones' Lane, off Hwy 395, several miles S of Alturas.
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
CAS-BOT-BC58753
Plagiobothrys scouleri
Herbert Louis Mason; Verne Grant
1947-7-12
13408
Modoc
W side of South Fork of Pit River Valley, SW 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
CAS-BOT-BC58764
Plagiobothrys stipitatus var. micranthus
Herbert Louis Mason; Verne Grant
1947-7-12
13410
Modoc
W side of Pit River Valley, S of Alturas.
Comment
UC1191844
Plagiobothrys stipitatus var. micranthus
Herbert L. Mason and Verne Grant
1947-7-12
13410
Modoc
s of Alturas (w side of Pit River Valley); Pit River Valley
Comment
POM312370
Plantago halophila
H. L. Mason
1945-8-24
12682
Lake
East shore, Lower Lake.
Comment
UC1111008
Plantago patagonica
Herbert L. Mason
1928-3-10
4175
Riverside
Snow Creek Colorado Desert, Whitewater River Valley
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
CAS-BOT-BC91768
Platystemon californicus
H. L. Mason
1929-3-24
5110
Madera
Between Bates Station and O'Neal's at junction of Yosemite road, 18 miles east of Madera.
Comment
CAS-BOT-BC91875
Platystemon californicus
H. L. Mason
1926-4-30
3134
Riverside
Two miles south of Temecula.
Comment
UC912454
Plectritis ciliosa subsp. ciliosa
Herbert L. Mason
1927-5-11
3731
Yuba
near Dobbins
457
Comment
UC912465
Plectritis macrocera
H. L. Mason
1932-4-25
7006
Amador
road Ione to Latrobe (Cosumnes River Bridge); Cosumnes River Bridge
Comment
UC635154
Pleuricospora fimbriolata
H. L. Mason
Jul 1930
5704
Calaveras
Blue Creek, Sierra Nevada Mountains, near Hermit Springs
Comment
UC571025
Pluchea odorata var. odorata
H. L. Mason
1929-9-9
5419
San Joaquin
Holt
Comment
UC581130
Pluchea sericea
H. L. Mason
1934-3-27
8030
Inyo
Death Valley
Comment
UC1100399
Poa bulbosa
Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith
1949-5-29
758
Lassen
on Great Northern RR, Hwy 299 <Nubeiber>
Comment
UC912659
Poa douglasii
Herbert L. Mason
1929-9-1
5404
Mendocino
4 mi n Fort Bragg
Comment
UCD91931
Poa pratensis
H. L. Mason
1938-7-11
11932
Tuolumne
Miguel Meadow, near Swamp Lake, northwest of Hetch-Hetchy. Yosemite National Park.
Comment
UC1106327
Poa pratensis subsp. pratensis
Herbert L. Mason, B. Fuller, and H. Whisler
1958-7-13
25
Nevada
12 mi n Truckee (U.C. Trout Lab, Sage Hen Creek); Sierra Nevada
1981
Comment
UC936197
Poa secunda subsp. juncifolia
H. L. Mason
1932-4-1
6862
Los Angeles
1 mi e Lancaster; Mojave Desert
Comment
UC965499
Poa secunda subsp. secunda
Herbert L. Mason
1952-7-19
14435
Nevada
meadow opposite University of CA Trout Laboratory (Sage Hen Creek); Sierra Nevada
1981
Comment
CAS-BOT-BC244250
Poa unilateralis
H. L. Mason
1921-5-28
s.n.
San Mateo
Pebble Peach, near Pescadero
Comment
UC570736
Pogogyne douglasii
H. L. Mason
Jun 1930
5683
Lake
four miles east of Middletown
Comment
UC1988931
Pogogyne serpylloides
H. L. Mason
Apr 1930
5554
Calaveras
Hills west of San Andreas
Comment
UC1988930
Pogogyne serpylloides
H. L. Mason
1924-5-13
1014
Alameda
Ridge south of Claremont Canyon, Berkeley Hills
Comment
UC1988932
Pogogyne serpylloides
Herbert L. Mason
1926-4-10
2803
Alameda
Arroyo Mocho, 6 miles of Livermore
Comment
UC1988945
Pogogyne zizyphoroides
H. L. Mason
1928-5-3
4476
Amador
Hills near Carbondale
Comment
UC714181
Polemonium eximium
Herbert L. Mason
1936-7-23
11294
Tuolumne
alpine slopes Mount Conness; Sierra Nevada, alpine slopes Mount Conness
3505
Comment
CAS-BOT-BC231294
Polemonium pulcherrimum
H. L. Mason
1936-7-24
11328
Tuolumne
White Mountain, Mount Conness Range
3505
Comment
UC714188
Polemonium pulcherrimum
Herbert L. Mason
1936-7-24
11328
Tuolumne
White Mountain Sierra Nevada, Mount Conness Range, White Mountain
3505
Comment
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
CAS-BOT-BC167814
Polygala cornuta var. cornuta
H. L. Mason
1926-5-29
3288
Nevada
Donner Pass Road near Alta
Comment
CAS-BOT-BC167835
Polygala cornuta var. fishiae
H. L. Mason
1923-6-20
524
Ventura
Camp Comfort, San Antonio Canyon, Ojai
Comment
UC1060642
Polygonum
Herbert L. Mason
1955-8-14
14655
Modoc
n of Rim Rock Valley Reservoir (Frift Fence Reservoir); Frift Fence Reservoir
Comment
UC1101135
Polygonum amphibium var. stipulaceum
Herbert L. Mason
1948-7-18
13613
Siskiyou
Grass Lake
Comment
UC1101137
Polygonum amphibium var. stipulaceum
Herbert L. Mason
1946-7-27
12950
Lake
2-3 mi n Lakeport; Clear Lake
Comment
UC1195913
Polygonum amphibium var. stipulaceum
Herbert L. Mason
1958-8-9
14866
Tuolumne
w Hetch-Hetchy Dam (meadow at lake); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
CAS-BOT-BC218107
Polygonum aviculare
Herbert Louis Mason; Verne Grant
1947-7-18
8043
Modoc
Eastside Canal, 5 mi N of Bayley's bridge, S of Alturas.
Comment
UC1177520
Polygonum bistortoides
Herbert L. Mason, B. Fuller and H. Whisler
1958-6-29
3
Nevada
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
SEINET11938910
Polygonum douglasii
H. L. Mason
1936-1
11509
Mariposa
Yosemite National Park, Peregoy Meadow, Glacier Point road
2256
Comment
UCD100248
Polygonum douglasii
Herbert L. Mason
1948-7-17
13598
Siskiyou
Eastern Grass Lake.
Comment
UC1056966
Polygonum douglasii subsp. douglasii
Herbert L. Mason
1936-7-27
11391
Tuolumne
w Tioga Pass; Sierra Nevada, Yosemite National Park, Gaylor Lakes
3200
Comment
UC1093950
Polygonum douglasii subsp. douglasii
Herbert L. Mason
1938-7-11
11935
Tuolumne
Miguel Meadow Sierra Nevada, Yosemite National Park (margin of lake at gravel pit, w of Hetch Hetchy)
1584
Comment
UC1179023
Polygonum douglasii subsp. spergulariiforme
Herbert L. Mason
1936-9-20
11539
Lake
St. Helena Creek Snow Mountain
Comment
UC971923
Polygonum douglasii subsp. spergulariiforme
Herbert L. Mason
1950-7-15
14044
Siskiyou
Scott Creek Scott Valley
Comment
UC1101166
Polygonum hydropiperoides
Herbert L. Mason and S. Galen Smith
1948-8-9
8302
Merced
1 mi w Los Banos
Comment
SEINET11939041
Polygonum kelloggii
H. L. Mason
1957-1
14706
Modoc
W side of Said Valley
Comment
UC1101143
Polygonum lapathifolium
Herbert L. Mason and Verne Grant
1947-7-11
13372
Modoc
irrigation ditch by Jones' Lane (off Hwy 395, s of Alturas)
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
UC1101142
Polygonum lapathifolium
Herbert L. Mason
1947-8-8
13466
Modoc
nw Alturas (sw margin of reservoir); Big Sage Reservoir
Comment
UC1101145
Polygonum lapathifolium
Herbert L. Mason
August 1930
5718
Lake
Clear Lake; along shores
Comment
UC1093951
Polygonum minimum
Herbert L. Mason
1938-7-22
11966
Tuolumne
Vernon Lake trail n Hetch Hetchy; Yosemite National Park
2072
Comment
SEINET3399391
Polygonum paronychia
Herbert L. Mason
1926-4-18
2872
San Francisco
Dunes, San Francisco
Comment
JEPS22874
Polygonum polygaloides subsp. confertiflorum
Herbert L. Mason
Jul 29 1955-Jul 31 1955
14639
Lassen
Pine Creek Flat
Comment
UC965537
Polygonum polygaloides subsp. confertiflorum
Herbert L. Mason
1952-7-17
14389
Plumas
Beckwourth Sierra Valley
Comment
UC1093678
Polygonum polygaloides subsp. confertiflorum
H. L. Mason
1955-8-14
14657
Modoc
n Everly Reservoir
Comment
UC1111532
Polygonum polygaloides subsp. confertiflorum
Herbert L. Mason
1957-6-21
14700
Plumas
vernal pool e Beckwourth Butte; Sierra Valley
Comment
UC1111535
Polygonum polygaloides subsp. confertiflorum
H. L. Mason
1957-6-21
14706
Modoc
Said Valley; w side
Comment
CAS-BOT-BC419906
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1936-8-6
11516
Mariposa
Sierra Nevada, Yosemite National Park. Peregoy Meadow, Glacier Point road
2255
Comment
CAS-BOT-BC420065
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1948-7-17
13599
Siskiyou
Eastern Grass Lake
Comment
UC1060645
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1957-7-7
14729
Nevada
sw Hobart Mills; Prosser Meadow
Comment
CAS-BOT-BC420064
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1948-7-18
13621
Siskiyou
Grass Lake
Comment
RSA312538
Polygonum punctatum
H. L. Mason
1928-9-30
4969
San Joaquin
San Joaquin Delta near Holt.
Comment
UC1083118
Polygonum shastense
Herbert L. Mason
1936-7-29
11438
Mono
cirque below Conness Glacier (w of Saddlebag Lake)
3200
Comment
UC912478
Polygonum shastense
Herbert L. Mason
1933-9-2
7259
Amador
Silver Lake Sierra Nevada
Comment
CAS-BOT-BC76945
Polypodium californicum
H. L. Mason
1921-6-1
s.n.
San Mateo
Pebble Beach near Pescadero
Comment
SACT002059
Polypogon monspeliensis
Herbert Mason, Verne Grant
1946-8-28
Unknown
Pond on Highway 5 about 3 miles south of Daly City Road.
Comment
UC672630
Polystichum dudleyi
Herbert L. Mason
1927-7-31
4004
Santa Cruz
Bean Creek Mt. Herman; Santa Cruz Mts.
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
SEINET10460780
Porterella carnosula
Mason
1952-7-19
Mason 14439
Sierra
Margins of marshy pond 1.5 miles east of Calpine near junction of Sierraville-Beckwith road and Calpine road, Sierra Valley
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
UC1099894
Potamogeton crispus
Herbert L. Mason, Verne Grant
1946-8-21
13068
San Joaquin
sw of Holt; Trapper's Slough
Comment
CAS-BOT-BC452153
Potamogeton diversifolius
Herbert L. Mason
1948-6-10
13591
Merced
Delta road, 3 miles east of Los Banos [Banos]
Comment
UC1099882
Potamogeton epihydrus subsp. nuttallii
Herbert L. Mason, Verne Grant
1947-6-12
13397
Modoc
several mi s of Alturas (by Jones' Lane, off Hwy 395)
Comment
UC1099862
Potamogeton foliosus
Herbert L. Mason, S. Galen Smith
1948-8-9
8287
Merced
about 10 mi w of summit of Pacheco Pass; Pacheco Creek
Comment
UC1100038
Potamogeton foliosus
Herbert L. Mason
1946-6-28
12878
Alameda
San Leandro Creek
Comment
UC965618
Potamogeton gramineus
Herbert L. Mason
1952-7-19
14456
Sierra
1.5 mi e of Calpine (at junction of Calpine with Sierraville-Beckwourth Road); Sierra Nevada, Sierra Valley
1524
Comment
UC1099852
Potamogeton illinoensis
Herbert L. Mason, S. Galen Smith
1948-8-19
8370
Merced
bridge below Snelling; San Joaquin River
Comment
POM312989
Potamogeton natans
H. L. Mason
1946-5-18
12770
Mendocino
Sand dune, six miles north of Fort Bragg.
Comment
UC1100070
Potamogeton nodosus
Herbert L. Mason, Verne Grant
1946-7-5
12907
Solano
just n of Vallejo (in Lake Chabot water reservoir); Lake Chabot
Comment
CAS-BOT-BC453812
Potamogeton nodosus
Herbert L. Mason
1945-7-10
12640
Butte
Sanford slough, Butte Sink, southwest corner of Butte County.
Comment
UC1100071
Potamogeton nodosus
Herbert L. Mason
1947-7-10
12640
Butte
Sanford Slough, sw corner of Butte County Sanford Slough; , Butte Sink
Comment
UC1099815
Potamogeton pectinatus
Herbert L. Mason, S. Galen Smith
1948-7-27
8220
Merced
1/4 mi s of Ingomar
Comment
UCD138286
Potamogeton pusillus
Herbert L. Mason
1948-6-29
13581
Merced
5 miles north of Volta.
Comment
UC1099896
Potamogeton pusillus var. pusillus
Herbert L. Mason, S. Galen Smith
1948-8-10
8309
Merced
just w of South Dos Palos
Comment
UC1100039
Potamogeton pusillus var. pusillus
Herbert L. Mason, S. Galen Smith
1948-8-19
8363
Merced
about 2 mi ne of Merced (on Snelling highway)
Comment
CAS-BOT-BC242275
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
POM313013
Potamogeton richardsonii
H. L. Mason, Verne Grant
1947-7-11
13380
Modoc
Irrigation ditch on road from Likely to Jess Valley, ca. 1 mile east of Likely.
Comment
UC1056964
Potamogeton robbinsii
Herbert L. Mason
1938-7-6
11857
Tuolumne
Swamp Lake w of Hetch Hetchy; Sierra Nevada, Yosemite National Park
1584
Comment
UC1099850
Potamogeton striatus
Herbert L. Mason
1947-8-15
13540
Modoc
e. side Goose Lake (mouth of Crane Creek on Willow Ranch)
Comment
CAS-BOT-BC242269
Potamogeton zosteriformis
Herbert Louis Mason; Verne Grant
1947-7-12
13384
Modoc
Jones Lane, off Hwy 395, several miles S of Alturas.
Comment
UC642630
Potentilla amicarum
H. L. Mason
1936-7-23
11302
Tuolumne
Mount Conness Sierra Nevada, Mount Conness
3505
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
UC673310
Potentilla drummondii
Herbert L. Mason
1923-8-6
717
Tuolumne
near Lyell Fork Tuolumne River (Yosemite National Park); Sierra Nevada, Yosemite Natl Park, Lyell Fork Tuolumne R
Comment
UC673330
Potentilla drummondii
Herbert L. Mason
1923-8-8
732
Tuolumne
0.5 mi from mouth Moraine Creek (Dana Fork Tuolumne River); 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
UC673329
Potentilla flabellifolia
Herbert L. Mason
1923-8-8
731
Tuolumne
0.5 mi from mouth, Dana Fork Tuolumne River Moraine Creek; Sierra Nevada, Yosemite Natl Park, Dana Fork Tuolumne R
Comment
UC1083119
Potentilla fruticosa
Herbert L. Mason
1936-7-25
11375
Tuolumne
w of Tioga Pass; Sierra Nevada, Yosemite National Park, Gaylor Lakes
3200
Comment
UC1039605
Potentilla palustris
Herbert L. Mason
1940-7-25
12331
El Dorado
Luther Pass Grass Lake (Grass Lake, eastern El Dorado County); , Luther Pass
2377
Comment
SEINET10542304
Potentilla palustris
Herbert L. Mason
1940-7-25
Mason 12331
El Dorado
Sphagnum bog in pinus jeffreyi and abies magnifica forest, grass lake, luther Pass
2377
Comment
UC1083120
Prunus andersonii
Herbert L. Mason
1936-8-1
11501
Mono
3 mi. n. Mono Lake; Sierra Nevada, Yosemite Nat'l Park
Comment
A346446
Prunus emarginata
H. L. Mason
1933-9-2
7263
Unknown
Silver Lake, Sierra Nevada Mountains
Comment
SBBG28167
Prunus fasciculata var. fasciculata
H. L. Mason
1935-5-1
Kern
ridge S of Isabella
Comment
CAS-BOT-BC163000
Prunus fasciculata var. fasciculata
Herbert L. Mason
1941-3-28
12403
San Luis Obispo
North end of Nipomo Mesa
76
Comment
GH346503
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
UC632864
Pseudobahia heermannii
H. L. Mason
1936-3-20
11002
Tuolumne
3 mi above Tuolumne
Comment
CAS-BOT-BC356425
Pseudognaphalium beneolens
H. L. Mason
1934-9-9
8151
Monterey
Santa Lucia Mountains, near the Indians
Comment
UC632842
Pseudognaphalium biolettii
H. L. Mason
1936-3-6
10989
San Luis Obispo
11 mi w San Luis Obispo; Pecho Hills
Comment
UC632820
Pseudognaphalium luteoalbum
H. L. Mason
1936-4-12
11072
Amador
near Lancha Plana; Mokelumne River
Comment
UC672217
Pseudognaphalium stramineum
H. L. Mason
1932-5-4
7057
Alameda
Laundry Farm Oakland Hills (Oakland Hills)
Comment
UC1076354
Pseudotsuga macrocarpa
H. L. Mason
1927-6-15
3763
San Bernardino
slopes of Mt. Baldy; San Gabriel Mts., Mt. Baldy
1889
Comment
CAS-BOT-BC361773
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
CAS-BOT-BC361776
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1952-7-17
14390
Plumas
Sierra Nevada. Beckwourth. Sierra Valley
1524
Comment
UC1099790
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1947-3-30
13162
Sutter
1 mi n West Butte
Comment
UC694158
Psilocarphus brevissimus var. brevissimus
H. L. Mason
1932-4-24
6967
San Joaquin
11 mi s Clements
Comment
UC581170
Psilocarphus chilensis
H. L. Mason
1935-3-30
8329
Kern
plains w Bakersfield
Comment
UC1178978
Psilocarphus oregonus
Herbert L. Mason
1946-5-31
12801
Lake
1.5 mi w Lower Lake
Comment
UC552339
Psilocarphus oregonus
Lucile R. Mason
1935-4-9
Contra Costa
Marsh Creek
Comment
UC694156
Psilocarphus tenellus
H. L. Mason
1932-4-25
6990
Amador
hill above Ione
Comment
UC694155
Psilocarphus tenellus
Lucile Mason
1934-4-1
Monterey
Lucia
Comment
UC558488
Psilotum nudum
Herbert L. Mason
1936-11-16
San Francisco
In pot with cycad, Conservatory, Golden Gate Park, San Francisco
Comment
GH347958
Ptelea crenulata
H. L. Mason
1928-4-1
4270
Unknown
Canyon back of Antioch hills north of Mount Diablo
Comment
JEPS40168
Ptelea crenulata
H. L. Mason
1928-3-31
Contra Costa
Mt. Diablo
Comment
SEINET951713
Pteridaceae
Charles T. Mason Jr.
1948-1
1111
Santa Clara
0.5 miles west of 'Buckeye Ranch,' along Quimby road to Mount Hamilton
518
Comment
CAS-BOT-BC421182
Pterostegia drymarioides
H. L. Mason; H. A. Borthwick
1921-3-20
s.n.
Santa Clara
Guadalupe Canon [Canyon]
Comment
UC555698
Purshia tridentata var. glandulosa
H. L. Mason
1926-4-27
3024
Los Angeles
Rock Creek
Comment
JEPS58854
Pyrola asarifolia
H. L. Mason
1924-6-26
Plumas
Blairsden
Comment
UC1076079
Quercus X macdonaldii
Herbert L. Mason
1927-9-24
4091
Santa Barbara
near West Ranch; Santa Cruz Island
Comment
UCD45068
Quercus agrifolia
Herbert L. Mason
1946-6-8
12843
Santa Barbara
Bluff Camp, south side of Big Pine Mountain, altitude 4500 feeet, Santa Barbara County.
1371
Comment
UCD45205
Quercus berberidifolia
H. L. Mason
1926-1-1
2597
Lake
Blue Lakes.
Comment Read comments Jun 2 2008
UC1083188
Quercus chrysolepis
H. L. Mason
1930-10-25
5750
Monterey
Headwaters of the Arroyo Seco Santa Lucia Mts.
Comment
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
UC1076205
Quercus garryana
H. L. Mason
1925-10-4
2237
Marin
near Phoenix Lake (n side of Mt. Tamalpais); Mt. Tamalpais
Comment
UCD45307
Quercus pacifica
Herbert L. Mason
1927-9-24
4091
Santa Barbara
Santa Cruz Island, Santa Barbara Co.
Comment
UCD47141
Quercus parvula var. shrevei
Herbert L. Mason
1929-12-1
5513
Santa Cruz
Swanton, Santa Cruz County.
304
Comment
UCD47349
Quercus tomentella
Herbert L. Mason
1927-9-25
4102
Santa Barbara
Occasional in forests and canyons. Pass from West Ranch to Prisoner's harbor, Santa Cruz Island, Santa Barbara Co.
Comment Read comments Apr 29 2014
UC1199514
Quercus vacciniifolia
Herbert L. Mason
1929-10-4
6573
El Dorado
hills above Glen Alpine; Fallen Leaf Lake
Comment
UCD47406
Quercus vacciniifolia
H. L. Mason
1932-7-21
7018
Humboldt
East slope of Southfork Mts. On road Arcata to Weaverville, Humboldt County.
Comment Read comments Oct 6 2006
UC565542
Rafinesquia californica
Herbert L. Mason
1926-5-26
3253
Alameda
Sunol Niles Canyon
Comment
UC635421
Ranunculus aquatilis var. hispidulus
H. L. Mason
1925-6-27
2120
Tuolumne
Hog Ranch Mather
Comment
UC635097
Ranunculus canus var. canus
H. L. Mason
1929-3-15
5055
Contra Costa
on summit of hill east of Nortonville
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
UC642908
Ranunculus eschscholtzii var. oxynotus
H. L. Mason
1936-7-31
11473
Mono
e Saddlebag Lake; Sierra Nevada, Tioga Crest
3474
Comment
UC634972
Ranunculus hebecarpus
H. L. Mason
1929-3-29
5126
Contra Costa
two mi above Clayton (Marsh Creek Road)
Comment
SEINET5338819
Ranunculus occidentalis
E. W. Mason
1976-3-13
s.n.
Placer
North Fork American River, about 2 miles south of Auburn.
274
Comment
UC1195912
Ranunculus orthorhynchus var. orthorhynchus
Herbert L. Mason
1958-8-9
14885
Tuolumne
Swamp Lake Sierra Nevada, Yosemite National Park, Hetch Hetchy Dam (w side of dam)
1584
Comment
UC634929
Ranunculus orthorhynchus var. orthorhynchus
H. L. Mason
1923-7-13
588
Tuolumne
Hog Ranch Mather
Comment
UCD97100
Ranunculus sceleratus
H. L. Mason
1937-6-12
11547
Contra Costa
0.5 mile from the south end of Borden Highway and about 1.5 miles west of Byron.
Comment
UC1178884
Reseda luteola
Herbert L. Mason
1942-9-29
12558
Napa
2 mi n of Calistoga (Napa River); Napa River
Comment
UC629707
Rhamnus alnifolia
H. L. Mason
1939-8-3
12200
Placer
7 mi nw Tahoe City; Squaw Valley
1889
Comment
UC570985
Rhamnus californica subsp. californica
Herbert L. Mason
1927-7-30
3988
Monterey
Cypress Point
Comment
UC570986
Rhamnus californica subsp. californica
Herbert L. Mason
1928-4-8
4293
Sonoma
2 mi n Fort Ross
Comment
CAS-BOT-BC59912
Rhamnus crocea
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River.
Comment
UC570995
Rhamnus crocea
Herbert L. Mason
1934-6-23
539
Monterey
Carmel River
Comment
UC570991
Rhamnus ilicifolia
H. L. Mason
1928-5-3
4465
Amador
1 mi s Ione
Comment
UC570996
Rhamnus purshiana
Herbert L. Mason
1924-6-19
1071
Plumas
along stream running n into Bear Lake Bear Lake
Comment
UC570981
Rhamnus tomentella subsp. tomentella
Herbert L. Mason
1923-6-16
439
Santa Barbara
La Cumbre Peak
Comment
UC571037
Rhododendron macrophyllum
H. L. Mason
1932-8-26
7157
Mendocino
Mendocino City, [Pine Barrens] Mendocino City
Comment
UC634737
Rhododendron macrophyllum
H. L. Mason
1928-8-25
4922
Mendocino
1 mi from Noyo River (near Noyo)
Comment
GH363055
Rhododendron macrophyllum
H. L. Mason
1928-7-11
4896
Unknown
Fort Ross to Willits
Comment
UC634741
Rhododendron occidentale
H. L. Mason
1923-7-20
625
Tuolumne
Hog Ranch, Middle Fork Hog Ranch; , Middle Fork
Comment
CAS-BOT-BC170443
Rhus integrifolia
H. L. Mason
1926-4-26
2943
Los Angeles
Pacoima Wash, foothills of San Gabriel Mountains
Comment
UC635200
Rhus integrifolia
H. L. Mason
1925-4-18
1499
San Diego
Hills back of Navy Fuel Dock
Comment Read comments Feb 27 2017
RSA650223
Rhus ovata
G. W. Mason
1949-1-23
s.n.
Riverside
Found in Batista Canyon 7-10 miles east of Hemet
518
Comment Read comments Apr 29 2011
UC635189
Rhus trilobata
H. L. Mason
1926-3-21
2763
Lake
Toll House Canyon between Middletown and Mount St. Helena; Toll House Canyon
Comment
CAS-BOT-BC111865
Rhynchospora alba
Herbert L. Mason
1946-7-4
12880
Sonoma
Pitkin Marsh; between Santa Rosa and Forestville.
Comment
UC1093896
Ribes amarum
Herbert L. Mason
1938-5-8
11796
Santa Barbara
vicinity of summit Figueroa Mountain
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
UC570841
Ribes aureum var. gracillimum
H. L. Mason
1932-4-3
6924
San Benito
nw Priest Valley (near summit of grade); Lewis Creek Grade
Comment
UC1191512
Ribes divaricatum var. pubiflorum
Herbert L. Mason
1946-7-24
12927
Marin
second lake s Bear Valley (on road to Lake Ranch)
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
UC1191513
Ribes menziesii
Herbert L. Mason
1946-7-24
12924
Marin
second lake s Bear Valley (on road to Lake Ranch)
Comment
UC570979
Ribes montigenum
H. L. Mason
1922-7-26
333
Tuolumne
Porcupine Flat Sierra Nevada Mountains, Yosemite National Park
2133
Comment
UC570974
Ribes quercetorum
Herbert L. Mason
1926-4-10
2821
Alameda
Arroyo Mocho Canyon
Comment
UC570963
Ribes sanguineum var. glutinosum
Herbert L. Mason
1926-2-21
2645
Marin
Inverness
Comment
UC570964
Ribes sanguineum var. glutinosum
Herbert L. Mason
1925-9-12
2224
Contra Costa
head San Leandro Canyon; Oakland Hills
Comment
CAS-BOT-BC168679
Ribes speciosum
Herbert L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
JEPS19652
Rorippa subumbellata
H. L. Mason
1939-8-2
12197
El Dorado
near the mouth Upper Truckee River; s end Lake Tahoe, nr mouth Upper Truckee River
1898
Comment
UC1077122
Rorippa subumbellata
Herbert L. Mason
1939-8-2
12197
El Dorado
near mouth Upper Truckee River (s end Lake Tahoe); , near mouth Upper Truckee River
1920
Comment
UC555673
Rosa californica
H. L. Mason
1930-10-25
5774
Monterey
banks of river between Jolon and Santa Lucia Ranger Station (in foothills); San Antonio River
Comment
UC555674
Rosa californica
H. L. Mason
1929-10-12
5498
San Luis Obispo
10 mi w Atascadero
Comment
UC555639
Rosa pinetorum
H. L. Mason
1932-7-31
7133
Santa Cruz
near mouth of Waddell Creek
Comment
UC1191581
Rotala ramosior
Herbert L. Mason, Verne Grant
1946-9-27
13134
Butte
3 mi w of Biggs
Comment
UC1039998
Rubus parviflorus
Herbert L. Mason
1936-7-9
11178
Mariposa
s White Wolf (hill forming boundary between Tuolumne and Mariposa Counties); Sierra Nevada, Yosemite National Park, s of White Wolf
2590
Comment
CAS-BOT-BC158701
Rubus spectabilis
H. L. Mason
1922-3-29
s.n.
Santa Cruz
Liddell Creek near mouth of canyon.
Comment
UC555294
Rubus spectabilis
H. L. Mason
1926-2-21
2644
Marin
Inverness
Comment
UC1101201
Rumex conglomeratus
Herbert L. Mason and Verne Grant
1946-7-5
12912
Solano
just n Vallejo (in Lake Chabot water reservoir); Lake Chabot
Comment
UC1101190
Rumex crispus
Herbert L. Mason and Verne Grant
1947-6-26
13240
Solano
Cordelia Slough Suisun Marsh
Comment
UC1101191
Rumex crispus
Herbert L. Mason
1927-10-4
4136
Santa Cruz
Ano Nuevo Point Mouth of Waddell Creek
Comment
CAS-BOT-BC211349
Rumex lacustris
Herbert Louis Mason; Verne Grant
1947-8-27
8309
Modoc
South end of Clear Lake.
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
UC1101221
Rumex salicifolius var. lacustris
Herbert L. Mason
1947-8-9
13482
Modoc
n of Alturas (e side of Fairchild Swamp); Fairchild Swamp
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
UC965636
Rumex salicifolius var. salicifolius
Herbert L. Mason
1952-7-18
14395
Nevada
upstream Univ. of Calif Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC555350
Rupertia physodes
H. L. Mason
1926-5-26
3241
Alameda
Niles Canyon
Comment
CAS-BOT-BC454144
Ruppia maritima
Herbert L. Mason
1945-7-20
s.n.
Monterey
Elkhorn Slough
Comment
CAS-BOT-BC454176
Ruppia maritima
H. L. Mason
1921-6-2
s.n.
San Mateo
Pebble Beach near Pescadero
Comment
UC935723
Sagittaria cuneata
Herbert L. Mason and Verne Grant
1947-7-11
13381
Modoc
irrigation ditch on road from Likely to Jess Valley ca 1 mi e Likely; Irrigation ditch on road from Likely to Jess Valley
Comment
UC935797
Sagittaria cuneata
Herbert L. Mason
1948-7-18
13607
Siskiyou
Grass Lake
Comment
UC1178890
Sagittaria latifolia
Herbert L. Mason
1945-9-19
12713
Colusa
1 mi n Colusa (on e side, Marshy bank of the Sacramento River); bank of the Sacramento River
Comment
UC935757
Sagittaria latifolia
Herbert L. Mason and Verne Grant
1946-8-14
13030
Butte
Butte Sink; near big pond on Sacramento Outing Club
Comment
CAS-BOT-BC445794
Sagittaria montevidensis
Herbert L. Mason; Verne Grant
1946-8-7
12981
Colusa
Eight miles north of Colusa
Comment
UC935729
Sagittaria montevidensis subsp. calycina
Herbert L. Mason and Verne Grant
1946-8-15
13007
Sacramento
irrigation ditch w Rio Linda; w of Rio Linda
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
UC935724
Sagittaria sanfordii
Herbert L. Mason and S. Galen Smith
1948-8-11
8320
Merced
s of junction of Merced and San Joaquin Rivers (Crane Ranch); San Joaquin Valley, jct of Merced and San Joaquin Rivers
Comment
UC935743
Sagittaria sanfordii
Herbert L. Mason and S. Galen Smith
1948-8-19
8366
Merced
on Snelling Highway about 2 mi ne Merced
Comment
UCD138069
Sagittaria sanfordii
Herbert L. Mason; S. Galen Smith
1948-8-11
8320
Merced
Crane Ranch, south of junction of Merced and San Joaquin Rivers.
Comment
UC672595
Salazaria mexicana
H. L. Mason
1926-4-26
2981
Los Angeles
Vincent to Palmdale; Vincent to Palmdale
Comment
UC1076552
Salicornia virginica
Herbert L. Mason
1929-10-13
5504
San Luis Obispo
2.5 mi n Cambria
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
UC1179059
Salix exigua var. hindsiana
Herbert L. Mason
1947-3-29
13157
Colusa
ca. 3 mi n.e. Colusa (along Butte Creek, Butte Sink)
Comment
UC634548
Salix exigua var. hindsiana
H. L. Mason
1926-3-14
2719
Napa
along stream in grove Mt. St. Helena
Comment
UC634550
Salix melanopsis
H. L. Mason
1923-6-23
552
Monterey
Carmel R.
Comment
UC634541
Salix planifolia subsp. planifolia
H. L. Mason
1923-7-30
672
Tuolumne
Lyell Fork - branch of Tuolumne R.
Comment
UC634910
Salvia carduacea
H. L. Mason
1932-4-3
6912 a
Kern
5 mi e Lost Hills
Comment
UC634923
Salvia carduacea
H. L. Mason
1929-3-31
5146
Contra Costa
Briones Valley
Comment
UC634924
Salvia columbariae
H. L. Mason
1929-3-29
5121
Contra Costa
Mt. Diablo
762
Comment
UC634912
Salvia dorrii var. pilosa
H. L. Mason
1926-4-26
2974
Los Angeles
4 mi s Vincent (Mint Canyon Highway); Soledad Pass
Comment
CAS-BOT-BC221117
Salvia sonomensis
H. L. Mason
1928-5-4
4497
El Dorado
Dugars, 3 miles north of Latrobe
Comment
GH400938
Salvia sonomensis
H. L. Mason
1929-4-29
5252
Unknown
between Kelseyville and Lower Lake
Comment
UC635705
Samolus parviflorus
H. L. Mason
September 1930
5904
Monterey
Elkhorn Slough between Watsonville and Castroville; Elkhorn Slough
Comment
UC555549
Sanguisorba annua
H. L. Mason
1924-6-16
1042
Plumas
near Graeagle (South banks of Feather River); s banks of Feather River
Comment
UC566860
Sanicula arctopoides
H. L. Mason
1927-3-11
3653
San Francisco
San Francisco, Bernal Heights Bernal Heights; San Francisco, Bernal Heights
Comment
UC1178947
Sanicula tuberosa
Herbert L. Mason
1939-7-13
12136
Tuolumne
w of Hetch Hetchy Valley (vicinity of Miguel Meadow, Sierra Nevada, Yosemite National Park); Sierra Nevada, Yosemite National Park
1584
Comment
UC566823
Sanicula tuberosa
H. L. Mason
1929-3-15
5049
Contra Costa
Nortonville
Comment
UC566791
Sanicula tuberosa
Herbert L. Mason
1927-5-11
3727
Butte
vicinity of Dobbins
457
Comment
UC1191401
Sarcobatus vermiculatus
Herbert L. Mason
1948-9-5
13676
Mono
island in Mono Lake
Comment
UC1039999
Saxifraga aprica
H. L. Mason
1936-7-27
11393
Tuolumne
Gaylor Lakes w of Tioga Pass; Sierra Nevada, Yosemite National Park, Gaylor Lakes
3200
Comment
GH381136
Saxifraga californica
H. L. Mason
1926-3-7
2702
Unknown
Mt. Diablo
Comment
UC1081519
Saxifraga californica
Herbert L. Mason
1936-3-14
10969
Calaveras
5 mi s of San Andreas
Comment
JEPS26621
Saxifraga ferruginea
Herbert L. Mason
Jul 18 1961-Jul 22 1961
15125
Siskiyou
1 mi over ridge and se of Castle Lake (Little Castle Lake); Little Castle Lake
1691
Comment
UC570933
Saxifraga mertensiana
H. L. Mason
1929-5-9
5268
Mendocino
5 mi w of Laytonville
Comment
UC1056438
Saxifraga odontoloma
Herbert L. Mason
1937-7-30
Mono
above Lake Mary
Comment
UC965550
Saxifraga odontoloma
Herbert L. Mason
1952-7-18
14401
Nevada
upstream from University of California Trout Laboratory ( Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
CAS-BOT-BC111375
Schoenoplectus acutus var. occidentalis
Herbert L. Mason; Verne Grant
1946-8-7
12993
Butte
Big pond near river, Grey Lodge Game Refuge; Gridley Road north of Butte Sink.
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-BC111440
Schoenoplectus acutus var. occidentalis
Herbert L. Mason
1945-9-18
12700
Sutter
Margins of pools on overflow lands of Sutter by-pass near bridge on Yuba City-Knight's Landing Hwy.
Comment
SEINET199876
Scirpus acutus
H. L. Mason, V Grant
1947-7-11
13379
Modoc
Along S. fork of Pit River downstream from Jess Valley by Forest Service camp site
Comment
UC1100771
Scirpus acutus var. occidentalis
Herbert L. Mason, Verne Grant
1947-6-26
13271
Solano
Suisun Marsh Cordelia Slough, Suisun Marsh
Comment
UC1100772
Scirpus acutus var. occidentalis
Herbert L. Mason, Verne Grant
1947-6-26
13256
Solano
Suisun Marsh Cordelia Slough, Suisun Marsh
Comment
UC1100876
Scirpus americanus
Herbert L. Mason
1947-8-11
13499
Modoc
on Highway 81 w margin Lower Lake (near boundary between Lassen and Modoc counties); w margin Lower Lake
Comment
UC1100874
Scirpus americanus
Herbert L. Mason, Verne Grant
1947-7-11
13364
Modoc
5 mi s Alturas (irrigation ditch on Highway 395); s of Alturas
Comment
UC1100798
Scirpus californicus
Herbert L. Mason
1946-7-24
12918
Marin
2.8 mi n Lake Ranch (margin of first lake s of Bear Valley); margin of first lake s of Bear Valley
Comment
UC1100799
Scirpus californicus
Herbert L. Mason, Verne Grant
1946-7-5
12904
Solano
in Lake Chabot water reservoir just n Vallejo; n of Vallejo
Comment
POM313083
Scirpus congdonii
H. L. Mason, Lawrence W. Reinecke
1937-7-22
11573
Tuolumne
Yosemite Nat l Park: Swamp Lake, just south of Miguel Meadows, just west of Hetch Hetchy Dam
1585
Comment
UC1100858
Scirpus maritimus
Herbert L. Mason
1945-9-18
12711
Sutter
Pennington Road between Live Oak and Pennington; between Live Oak and Pennington
Comment
UC1100859
Scirpus maritimus
Herbert L. Mason
1945-8-16
12660 a
Solano
near Suisun Bay; Grizzly Island, near Suisun Bay
Comment
UC1100900
Scirpus maritimus
Herbert L. Mason and S. Galen Smith
1948-8-12
8334
Merced
about 5 mi e Gustine (San Joaquin Valley); , e of Gustine
Comment
UC1100918
Scirpus maritimus
Herbert L. Mason, Verne Grant
1947-5-14
13231
Solano
Suisun Marsh Cordelia Creek, Suisun Marsh
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
UC1100923
Scirpus maritimus
Herbert L. Mason, Verne Grant
1946-8-6
12965 -A
Colusa
four mi s Colusa (w side Sacramento River, pond on Colusa-Marysville Highway); w side Sacramento River, s of Colusa
Comment
UC965494
Scirpus microcarpus
Herbert L. Mason
1952-8-16
14471
Nevada
meadow opposite University of California Trout Laboratory (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
UC1100803
Scirpus pungens
Herbert L. Mason
1948-9-4
13668
Mono
Rush Creek , Rush Creek (Mono Lake)
Comment
UC1100807
Scirpus pungens
Herbert L. Mason
1948-9-2
13630
Kern
Walker Pass
Comment
CAS-BOT-BC519009
Scoliopus bigelovii
W. E. Mason
1917-4-1
s. n.
San Mateo
La Honda Grade
Comment
UC673545
Scrophularia californica
H. L. Mason
1923-8-6
710
Tuolumne
s side of dome on <gore> between Lyell and Dana forks of Tuolumne River; Sierra Nevada Mts
Comment
UC673546
Scrophularia californica subsp. floribunda
H. L. Mason
1929-6-2
5352
Kern
30 mi from Bakersfield (Tejon Pass); Tehachapi Mts
Comment
UC565457
Scutellaria californica
Herbert L. Mason
1929-10-4
5458
Placer
1 mi above Cisco
Comment
UC1713664
Scutellaria tuberosa
Herbert L. Mason
1925-2-16
1251
Alameda
ridge n of Mills College
Comment
UC565460
Scutellaria tuberosa
Herbert L. Mason
1928-4-15
4342
Contra Costa
top of Moraga Ridge
Comment
RSA114112
Sedella pentandra
H. L. Mason
1953-5-4
s.n.
Colusa
Little Stony Creek Road 0.25 miles above junction of Little Stony Creek and Trout Creek, Inner North Coast Ranges.
610
Comment
CAS-BOT-BC417037
Sedella pumila
H. L. Mason
1938-4-14
11703
Tulare
Rocky Hill, east of Exeter.
304
Comment
CAS-BOT-BC417033
Sedella pumila
H. L. Mason
1938-5-10
11820
Tulare
Near Auckland Ranch on General Grant National Park road southwest of Badger.
457
Comment
POM264334
Sedella pumila
H. L. Mason
1941-4-4
12409
Butte
3 miles S of Chico near junction of road to Paradise.
91
Comment
UC1178841
Sedum radiatum
Herbert L. Mason
1938-7-21
11880
Tuolumne
just n Hetch Hetchy Valley (at junction of Frog Creek and Vernon Lake trail); Sierra Nevada, n of Hetch Hetchy Valley
1798
Comment
UC912627
Sedum radiatum
Herbert L. Mason
1925-12-30
2550
Mendocino
Hopland to Cloverdale grade
Comment
CAS-BOT-BC59062
Sedum spathulifolium
H. L. Mason
1921-7-1
s.n.
San Mateo
Pescadero Creek
Comment
UC1093641
Sedum stenopetalum
Herbert L. Mason
1957-7-6
14719 a
Modoc
Mill Creek , Mill Creek (Warner Mountains)
Comment
UC1191515
Sedum stenopetalum
Herbert L. Mason
1948-7-18
13627
Siskiyou
Grass Lake
Comment
UC1076341
Selaginella wallacei
Herbert L. Mason
1925-2-1
1224
Marin
Mt. Tamalpais
Comment
UC566657
Senecio aronicoides
Herbert L. Mason
1932-4-25
7013
El Dorado
Pilot Hill
Comment
UC566660
Senecio flaccidus var. douglasii
H. L. Mason
1930-10-25
5765
Monterey
San Antonio River , San Antonio River (Santa Lucia Mountains)
Comment
GH427714
Senecio flaccidus var. monoensis
H. L. Mason
1925-4-25
3088
Unknown
Box S. Springs
Comment
POM264329
Senecio fremontii
H. L. Mason
1940-7-30
12352
Alpine
Hills north of Carson Pass; Sierra Nevada.
2683
Comment
UC566632
Senecio minimus
H. L. Mason
1928-10-21
5002
Mendocino
Pudding Creek Fort Bragg, Pudding Creek
Comment
UC1178986
Sericocarpus oregonensis subsp. californicus
Herbert L. Mason
1945-9-9
12694
Sierra
s of Downieville; Yuba River Canyon
Comment
UC1100460
Setaria pumila
Herbert L. Mason
1946-9-12
13127
San Joaquin
slough s. of main ditch, Borden Hwy., near Dagget Rd., Roberts Isl. Roberts Isl.
Comment
UC1100461
Setaria pumila
Herbert L. Mason
1945-9-18
12712
Sutter
Pennington Rd. between Live Oak and Pennington
Comment
UC1100451
Setaria viridis
Herbert L. Mason and Malcolm A. Nobs
1948-9-3
491
Riverside
2 mi. n. Indio
Comment
UCD92862
Setaria viridis
Herbert L. Mason; Malcolm A. Nobs
1948-9-3
491
Riverside
2 miles north of Indio.
Comment
GH420707
Sidalcea hartwegii
H. L. Mason
1932-4-24
Unknown
Near base of Pilot Hill about 11 mi. E. of Folsom
Comment
UC1191166
Sidalcea hartwegii
Herbert L. Mason
1932-4-25
El Dorado
w Pilot Hill; w of Pilot Hill
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
UC604423
Silene californica
H. L. Mason
1938-5-10
11816
Tulare
on General Grant National Park sw Badger (near Auckland Ranch); General Grant National Park sw of Badger
457
Comment
UC640584
Silene douglasii
H. L. Mason
1924-6-20
1088
Plumas
above Graeagle Lodge; above Graeagle Lodge
Comment
UC640583
Silene laciniata subsp. major
H. L. Mason
1923-6-15
414
Santa Barbara
La Purisima Ridge La Purisima Ridge (Harris Grade)
Comment
CAS-BOT-BC389539
Silene nuda
Herbert L. Mason
1952-7-19
14452
Sierra
Sierra Nevada. 1.5 miles east of Calpine at junction of Calpine with Sierraville-Beckwourth road. Sierra Valley
1524
Comment
UCD115502
Sisymbrium altissimum
Herbert L. Mason
1947-7-10
13346
Modoc
Dorris Reservoir, 2 miles east of Alturas.
Comment
UC672082
Smilacina stellata
Herbert L. Mason
1926-5-30
3308 a
El Dorado
hill slope back of Emerald Bay (above falls); Lake Tahoe
Comment
UC570680
Solanum douglasii
Herbert L. Mason
1923-6-19
520
Ventura
near Ojai
Comment
UC1191778
Solanum triflorum
Herbert L. Mason, Verne Grant
1947-7-10
13341
Modoc
2 mi e of Alturas (Dorris Reservoir); Dorris Reservoir
Comment
GH244848
Solanum umbelliferum
H. L. Mason
1940-5-5
12276
Unknown
North slope of Twin Peaks, North Fork of Los Banos Creek, Inner South Coast Ranges
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
UC570690
Solanum umbelliferum
Herbert L. Mason
1926-5-28
3269
Placer
5 mi above Auburn
Comment
GH244920
Solanum umbelliferum
H. L. Mason
1928-5-3
4485
Unknown
South bank of Cosumnes River opposite Clark Creek
Comment
UC1093953
Solanum umbelliferum
Herbert L. Mason
1936-3-6
10986
San Luis Obispo
11 mi w of San Luis Obispo (Pecho Hills); Pecho Hills
Comment
UC570692
Solanum umbelliferum
Herbert L. Mason
1924-6-19
1066
Plumas
slide just west of Gold Lake
Comment
UC672221
Solidago elongata
H. L. Mason
1924-10-19
1124
San Francisco
Merced Lake , Merced Lake (San Francisco)
Comment
UC1192251
Solidago spectabilis
Herbert L. Mason
1947-8-11
13497
Modoc
On Highway 81, west margin of Lower Lake, near boundary, between Lassen and Modoc counties.
Comment
UC672191
Solidago velutina subsp. californica
H. L. Mason
1925-7-31
2201
Tuolumne
Mather , Mather (Sierra Nevada Mountains)
Comment
UC635706
Soliva sessilis
H. L. Mason
1928-4-13
4315
Marin
hills n San Rafael
Comment
CAS-BOT-BC235306
Sorghum halepense
Herbert L. Mason
1945-9-19
12723
Colusa
Below causway over Butte Sink spillway, east bank of Sacramento River, 1 mile north of Colusa
Comment
UC1099812
Sparganium angustifolium
Herbert L. Mason
1922-8-19
359
Tuolumne
Dog Lake; Yosemite National Park, Tuolumne Meadows
2743
Comment
UC1099793
Sparganium erectum subsp. stoloniferum
Herbert L. Mason
1946-6-9
12876
San Luis Obispo
between Oceano and mouth of Santa Maria River (Dune Lakes); Dune Lakes
Comment
POM312969
Sparganium erectum subsp. stoloniferum
H. L. Mason
1946-7-24
12925
Marin
Second lake south of Bear Valley on road to Lake Ranch.
Comment
SEINET3825672
Sparganium eurycarpum
Herbert L. Mason, Verne Grant
1946-8-14
13016
Butte
Canal near big pond on Sacramento Outing Club Butte Sink
Comment
JEPS19916
Sparganium natans
Herbert L. Mason
1957-7-16
14799
El Dorado
just n Luther Pass (on Highway 89); Grass Lake
2346
Comment
UC1099811
Sparganium natans
Herbert L. Mason
1937-7-22
11603
Tuolumne
just s Miguel Meadows (Swamp Lakes, n of Hetch Hetchy Dam); Sierra Nevada, Yosemite National Park, Swamp Lakes; Marsh Plant Survey
1584
Comment
SD49861
Sphaeralcea ambigua var. ambigua
Herbert L. Mason
1952-4-9
14230
San Bernardino
10 miles south of Needles.
Comment
UC1093908
Spiranthes stellata
Herbert L. Mason
1938-7-7
11877
Tuolumne
w Hetch Hetchy; Sierra Nevada, Yosemite National Park, Swamp Lake
1584
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
UC635178
Stachys ajugoides var. rigida
H. L. Mason
1925-7-16
2168
Tuolumne
near Mather (Hog Ranch)
Comment
UC1191910
Stachys albens
Herbert L. Mason, Verne Grant
1947-6-26
13266
Solano
Cordelia Slough Suisan Marsh
Comment
UCLA71460
Stachys albens
H. L. Mason
1925-7-16
2169
Tuolumne
near Mather (Hog Ranch)
Comment
UC936170
Stellaria calycantha
Herbert L. Mason
1936-7-28
11419
Mono
Mount Dana Plateau
Comment
UC1076562
Stellaria obtusa
Herbert L. Mason
1938-7-22
11960
Tuolumne
n of Hetch Hetchy (Beehive); Sierra Nevada, Yosemite National Park, Beehive
1996
Comment
SEINET4152199
Stenophyllus capillaris
H. L. Mason
1938-7-13
11946
Mariposa
Base of El Capitan, Yosemite Valley
1227
Comment
YM-YOSE65592
Stenophyllus capillaris
H. L. Mason
1938-7-6
11858
Tuolumne
BETWEEN SWAMP LAKE AND MIGUEL MEADOWS
Comment
UC565503
Stephanomeria cichoriacea
H. L. Mason
1929-10-12
5500
San Luis Obispo
9 mi e Morro
Comment
UC565522
Stephanomeria virgata subsp. pleurocarpa
Herbert L. Mason
1926-7-27
2176
Tuolumne
Mather
Comment
UC1292653
Streptanthus
Herbert L. Mason
1947-7-8
13275
Unknown
State Hwy 20; Clear Lake to Williams Rd, Lake-Colusa co. line
Comment
UC1178914
Streptanthus barbiger
Herbert L. Mason
1946-7-4
12896
Sonoma
ridge 2 mi e Occidental
Comment
UC1076042
Streptanthus drepanoides
Herbert L. Mason
1947-5-18
14794
Tehama
w Paskenta; Paskenta Grade, Barrett Springs
Comment
POM257209
Streptanthus glandulosus
H. L. Mason
1938-5-1
11747
Lake
Bartlett Mountain, about 4 miles from Lucerne
1159
Comment
UC1081569
Streptanthus glandulosus subsp. glandulosus
Herbert L. Mason
1936-4-26
11091
Lake
e side Bartlett Mountain
Comment
UC1178879
Streptanthus glandulosus subsp. glandulosus
Herbert L. Mason
1941-4-5
12408
Colusa
on road between Maxwell and Stonyford just w summit of grade
Comment
UC592147
Streptanthus glandulosus subsp. glandulosus
H. L. Mason
1929-4-29
5244
Lake
3 mi w Lakeport (on road to Hopland)
Comment
UC629717
Streptanthus polygaloides
H. L. Mason
May 15 1936-May 16 1936
11118
Mariposa
summit of road between Coulterville and Bagby
701
Comment
UC1292652
Streptanthus tortuosus
Charles T. Mason Jr.
1949-5-10
Mariposa
between Coulterville and Bagby
Comment
UC592159
Streptanthus tortuosus var. orbiculatus
Herbert L. Mason
1926-5-30
3322
El Dorado
near road to Fallen Leaf Lake; Lake Tahoe
Comment
UCD138321
Stuckenia striata
Herbert L. Mason
1947-8-15
13540
Modoc
Mouth of Crane Creek on Willow Ranch, east side of Goose Lake.
Comment
UCD138322
Stuckenia striata
Herbert L. Mason; S. Galen Smith
1948-8-11
8327
Merced
Crane Ranch, south of junction of Merced and San Joaquin Rivers.
Comment
UC1051483
Stylocline gnaphaloides
Herbert L. Mason
1952-4-7
14208
Riverside
Palm Canyon Palm Springs
Comment
UC1077076
Stylocline gnaphaloides
Herbert L. Mason
1938-5-7
11783
Santa Barbara
Burton Mesa
Comment
UC1111556
Stylocline gnaphaloides
Herbert L. Mason
1947-4-25
13207
Santa Cruz
near Felton; Mission Springs
Comment
UC1111578
Stylocline gnaphaloides
Herbert L. Mason
1938-5-7
11771
Santa Barbara
Burton Mesa
Comment
CAS-BOT-BC323010
Stylocline masonii
H. L. Mason
1935-3-30
8252
San Luis Obispo
Cholame Valley
Comment
CAS-BOT-BC5535
Stylocline masonii
Herbert L. Mason
1935-3-30
8241
Kern
Plains west of Bakersfield
Comment
CAS-BOT-BC422985
Stylomecon heterophylla
H. L. Mason
1930-10-25
5775
Monterey
Along the San Antonio River, between Jolon and Santa Lucia Range station in the foothills of the Santa Lucia Mountains
Comment
UC566954
Styrax officinalis var. redivivus
H. L. Mason
1931-5-9
5876
Shasta
Pitt River
Comment
UC1199814
Suaeda californica
Herbert L. Mason
1928-9-2
4944
Alameda
Bay Farm Island
Comment
UC1093857
Suaeda taxifolia
Herbert L. Mason
1927-11-27
4144
Santa Barbara
Carpenteria
Comment
UC1076035
Swertia albicaulis var. nitida
Herbert L. Mason
1947-5-15
14751
Shasta
1 mi s Boulder Creek (between La Moine and Dunsmuir)
Comment
UC1191852
Symphoricarpos rotundifolius var. rotundifolius
Herbert L. Mason
1948-7-18
13619
Modoc
Cedar Pass; Warner Mountains
Comment
UC1192075
Symphyotrichum frondosum
Herbert L. Mason
1948-9-4
13643
Mono
Rush Creek Mono 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
UC912291
Symphyotrichum spathulatum
H. L. Mason
1923-8-22
760 a
Tuolumne
ridge w of Third Lake; Sierra Nevada Mountains, Yosemite National Park, Lyell Fork
Comment
UC672248
Symphyotrichum subulatum
Herbert L. Mason
1923-10-6
768
Napa
Suisun Marsh, along railroad Suisun Marsh
Comment
CAS-BOT-BC98367
Symphyotrichum subulatum var. parviflorum
Herbert L. Mason
1955-8-12
14646
Yolo
Between Winters and Madison
Comment
UC1179025
Tamarix ramosissima
Herbert L. Mason
1952-4-9
14226
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
UC1177525
Taraxia subacaulis
Herbert L. Mason, B. Fuller, and H. Whisler
1958-6-29
11
Nevada
1 mi w University of California Trout Laboratory (12 mi n of Truckee); Sierra Nevada, Sage Hen Creek
1981
Comment
UC1191747
Taraxia tanacetifolia
Herbert L. Mason
1947-8-13
13523
Modoc
n Canby (ne side of reservoir); F Reservoir
Comment
UC566897
Tauschia parishii
H. L. Mason
1926-4-27
3025
Los Angeles
Rock Creek
Comment Read comments Jan 29 2016
UC566901
Tauschia parishii
H. L. Mason
1927-6-14
3764
Los Angeles
camp mouth of Icehouse Canyon mouth of Icehouse Canyon; San Gabriel Mountains, mouth of Icehouse Canyon
1889
Comment
UC570922
Tellima grandiflora
H. L. Mason
Jun 1930
5666
Sonoma
mouth of Gualala River
Comment
CAS-BOT-BC399916
Thalictrum sparsiflorum
H. L. Mason
1923-8-1
680
Tuolumne
Lyell Fork, Sierra Nevada Mountains
Comment
UC570913
Tiarella trifoliata var. unifoliata
Herbert L. Mason
1927-7-31
4003
Santa Cruz
Bean Creek Mt. Herman; Santa Cruz Mts., , Bean Creek
Comment
GH381229
Tiarella unifoliata
H. L. Mason
1925-10-25
2243 a
Unknown
Big Basin
Comment
UC1275783
Tiquilia nuttallii
Herbert L. Mason
1963-7-4
15223
Mono
Sulphur Springs near Artesian Well (n.e. shore of Mono Lake); Mono Lake
Comment
UC1083322
Torreya californica
Herbert L. Mason
1925-12-30
2559
Mendocino
Hopland, Cloverdale Cloverdale, Hopland
Comment
UC672449
Torreya californica
H. L. Mason
1927-7-28
3981
Santa Clara
Stevens Creek
Comment Read comments Sep 21 2011
CAS-BOT-BC519588
Triantha occidentalis subsp. occidentalis
Herbert L. Mason
1950-7-15
14052
Trinity
Summit of grade, Scott Mountain
Comment
UC632772
Trichophorum clementis
Herbert L. Mason
1936-7-26
11387
Tuolumne
w Gaylor Lakes (Moraine Flat); Yosemite National Park, w of Gaylor Lakes, Moraine Flat
2987
Comment
UC570718
Trichostema lanceolatum
Herbert L. Mason
1923-11-12
854
Contra Costa
Mount Diablo, middle slopes
Comment
UC672596
Trichostema lanceolatum
Herbert L. Mason
1930-10-25
5786
Monterey
along San Antonio River, between Jolon and Santa Lucia Ranger Station foothills of the Santa Lucia Mountains
Comment
UC1191154
Trichostema laxum
Herbert L. Mason
1936-9-19
11540
Napa
St. Helena Creek
Comment
UC555481
Trifolium albopurpureum var. albopurpureum
H. L. Mason
1928-4-26
4384
Contra Costa
Berkeley-Oakland hills
Comment
UC555485
Trifolium albopurpureum var. albopurpureum
H. L. Mason
1929-3-24
5109
Madera
18 mi e Madera (junction of Yosemite Rd)
Comment
UC555486
Trifolium albopurpureum var. albopurpureum
H. L. Mason
1929-3-29
5119
Contra Costa
Mt. Diablo
762
Comment
UC555491
Trifolium albopurpureum var. albopurpureum
H. L. Mason
1929-4-29
5236
Lake
2.9 mi w Lakeport (e base of rd from Hopland to Lakeport)
Comment
UC555479
Trifolium albopurpureum var. dichotomum
H. L. Mason
1928-5-6
4569
Alameda
Cedar Mountain
Comment
UC555603
Trifolium barbigerum
H. L. Mason
1928-4-28
4392
Marin
Tiburon Peninsula
Comment
UC1076192
Trifolium barbigerum
Herbert L. Mason
1934-4-28
8095
Sonoma
Hwy betw Healdsburg and Santa Rosa
Comment
UC555495
Trifolium barbigerum
H. L. Mason
1927-4-26
5220
Marin
w Bolinas Ridge (in bog at base of rd where stream empties into Bay)
Comment
JEPS65919
Trifolium barbigerum var. andrewsii
H. L. Mason
1931-4-12
Sonoma
Fulton
Comment
UC555456
Trifolium ciliolatum
H. L. Mason
1929-4-25
5204
Contra Costa
Marsh Creek Rd
Comment
UC555458
Trifolium ciliolatum
H. L. Mason
1928-4-15
4352
Alameda
e end Moraga Ridge
Comment
UC1101403
Trifolium cyathiferum
Herbert L. Mason
1948-7-17
13604
Siskiyou
eastern Grass Lake
Comment
UC555455
Trifolium eriocephalum var. eriocephalum
H. L. Mason
1931-5-9
5868
Siskiyou
5 mi n Yreka
Comment
UC555597
Trifolium eriocephalum var. eriocephalum
H. L. Mason
1929-5-18
5332
Siskiyou
s Yreka
Comment
UC555451
Trifolium fucatum
Herbert L. Mason
1926-3-20
2749
Sonoma
s Calistoga (along rr right-of-way)
Comment
UC1111533
Trifolium longipes var. nevadense
Herbert L. Mason
1936-8-6
11504
Mariposa
Peregoy Meadow, Glacier Point Rd Sierra Nevada, Yosemite National Park
2255
Comment
UC555619
Trifolium macraei
H. L. Mason
1928-4-13
4303
Contra Costa
Richmond waterfront
Comment
UC555609
Trifolium microdon
H. L. Mason
1928-4-28
4406
Marin
Tiburon peninsula
Comment
UC555614
Trifolium oliganthum
H. L. Mason
1928-5-6
4560
Alameda
Cedar Mtn
Comment
UC555403
Trifolium oliganthum
H. L. Mason
1929-3-29
5131
Contra Costa
2 mi above Clayton (Marsh Creek Rd)
Comment
UC632762
Trifolium variegatum
H. L. Mason
1938-7-22
11975
Tuolumne
n Hetch Hetchy (Vernon Lake Trail); Sierra Nevada, Yosemite National Park
2072
Comment
UC555377
Trifolium variegatum var. melananthum
H. L. Mason
1928-4-13
4311
Marin
n San Rafael
Comment
UC555587
Trifolium variegatum var. variegatum
H. L. Mason
1928-5-4
4492
El Dorado
near Latrobe (Swift Ranch)
Comment
UC555570
Trifolium wormskioldii
H. L. Mason
1925-7-4
2145
Tuolumne
Mather Sierra Nevada, Yosemite National Park
Comment
UC1099957
Triglochin maritima
Herbert L. Mason, Verne Grant
1947-7-12
13438
Modoc
n Likely (Corporation Ranch Headquarters); , n 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
UC672067
Trillium angustipetalum
Herbert L. Mason
1925-7-30
2188
Tuolumne
n.e. Mather (Smith Peak Trail)
Comment
CAS-BOT-BC519107
Trillium chloropetalum var. chloropetalum
H. L. Mason
1917-4-4
80
Marin
Tocaloma
Comment
SEINET10840595
Triodanis biflora
Mason
Mason 3199
Riverside
TEMECULA
Comment
UC673427
Triphysaria eriantha subsp. eriantha
H. L. Mason
1926-3-21
2759
Lake
Toll House Canyon between Middletown and Mount St. Helena; Toll House Canyon btw Middletown and Mount St. Helena
Comment
UC673431
Triphysaria eriantha subsp. eriantha
H. L. Mason
1925-3-23
1309
Alameda
Sunol
Comment
UC1191179
Triphysaria eriantha subsp. rosea
Herbert L. Mason
1940-5-22
12305
Mendocino
headland n of Pudding Creek Slough; (near Fort Bragg)
Comment
UC1178990
Triphysaria micrantha
Herbert L. Mason
1938-4-14
11708
Tulare
4 mi e Exeter
Comment
UC673447
Triphysaria pusilla
H. L. Mason
1924-5-13
1013
Alameda
Berkeley Hills
Comment
UC673453
Triphysaria versicolor subsp. faucibarbata
H. L. Mason
1928-3-24
4267
Marin
Millerton Tomales Bay (Tomales Bay)
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
UC635224
Triteleia ixioides subsp. anilina
H. L. Mason
1923-7-16
611
Tuolumne
Hog Ranch Sierra Nevada Mountains, Yosemite National Park
Comment
CAS-BOT-BC522046
Triteleia ixioides subsp. anilina
H. L. Mason
1923-7-16
611
Tuolumne
Hog Ranch, Yosembite National Park, Sierra Nevada Mountains
Comment
CAS-BOT-BC524333
Triteleia ixioides subsp. ixioides
H. L. Mason
1921-5-1
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
UC1077074
Triteleia ixioides subsp. scabra
Herbert L. Mason
1938-5-10
11818
Tulare
near Auckland
457
Comment
UC1178891
Triteleia laxa
Herbert L. Mason
1940-5-5
12273
Merced
w of Ortegalita; Inner South Coast Range, Piedra Azul Creek
Comment
JEPS54271
Tropidocarpum capparideum
Herbert L. Mason
1920-3-27
5115
Alameda
fields behind Mountain House (Altamont Pass); Altamont Pass
Comment
UC673302
Tropidocarpum gracile
H. L. Mason
1932-3-20
6842
Contra Costa
Antioch sand hills
Comment
UC1056991
Tuberaria guttata
Herbert L. Mason
1936-4-11
11078
Calaveras
Comanche
Comment
UC1240187
Typha
Herbert L. Mason
1947-6-26
13257
Solano
Cordelia Slough Suisun Marsh; , Cordelia Slough
Comment
UC1093861
Typha angustifolia
Herbert L. Mason
1937-6-17
11543
Alameda
Thornhill Pool Oakland
Comment
UCD94646
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
CAS-BOT-BC91181
Umbellularia californica
H. L. Mason
1925-12-30
2558
Mendocino
Hopland, Cloverdale Grade.
Comment
UC635506
Umbellularia californica
H. L. Mason
1925-12-30
2558
Mendocino
Hopland, Cloverdale Grade Cloverdale Grade; Hopland, Cloverdale Grade
Comment
POM312398
Utricularia gibba
H. L. Mason, Verne Grant
1941-9-27
13137 a
Butte
Three miles west of Biggs.
Comment
UC1101458
Utricularia gibba
Herbert L. Mason
1945-8-24
12670
Lake
Boggs Lake
Comment
UC1101468
Utricularia gibba
Herbert L. Mason
1938-7-9
11888
Tuolumne
w. Hetch Hetchy Dam (just s. of Miguel Meadows, Swamp Lake, Yosemite Nat'l Park); Yosemite Nat'l Park, Swamp Lake
1584
Comment
UC635677
Utricularia gibba
H. L. Mason
1929-9-21
5441
Contra Costa
1 mi. n. from junction of Borden Hwy. and rd. to Antioch
Comment
UC635680
Utricularia intermedia
Herbert L. Mason
1924-6-26
1090
Plumas
Graeagle near Blairsden; Graeagle
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
UC571028
Vaccinium ovatum
H. L. Mason
Jun 1930
5630
Mendocino
Fort Bragg
Comment
UC634721
Vaccinium ovatum
Herbert L. Mason
1927-7-30
3989
Monterey
Cypress Point
Comment
GH363251
Vaccinium parvifolium
H. L. Mason
1925-10-25
2244
Unknown
Woodwardia Creek, Big Basin
Comment
UC571026
Vaccinium parvifolium
H. L. Mason
Jun 1930
5636
Mendocino
Fort Bragg
Comment
UC912416
Vaccinium parvifolium
Herbert L. Mason
1928-7-11
4892
Sonoma
2 miles north of Fort Ross
Comment
SEINET1008892
Verbena hastata
Herbert L. Mason
1947-1
13502
Modoc
On Highway 81, north of Modoc-Lassen County line.
Comment
UC769972
Veronica peregrina subsp. xalapensis
Herbert L. Mason
1934-3-25
7956
Sacramento
Sacramento Valley, Rio Linda, Keithly Ranch Rio Linda; Sacramento Valley, , Keithly Ranch
Comment
UC964735
Veronica peregrina subsp. xalapensis
H. L. Mason
1925-6-25
2113
Tuolumne
Mather, Hog Ranch Hog Ranch; Mather, Hog Ranch
Comment
UC965647
Veronica peregrina subsp. xalapensis
Herbert L. Mason
1952-7-16
14368
Nevada
1 mi w of University of California Trout Laboratory (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
UC672497
Veronica persica
H. L. Mason
1927-4-12
3665
Alameda
University of California, Berkeley, LeConte Oak Berkeley; University of California, , LeConte Oak
Comment
JEPS19312
Veronica scutellata
Herbert L. Mason
1939-7-11
12124
Tuolumne
1/2 mi below Swamp Lake (w of Hetch Hetchy, Yosemite National Park); Sierra Nevada, Yosemite National Park
1584
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
UC1076193
Vicia americana var. americana
Herbert L. Mason
1925-7-4
2141
Tuolumne
Mather; Sierra Nevada
1432
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
SFV16520
Vicia benghalensis
S. Mason, P. Rector
1993-4-16
9
Orange
Santa Ana Mountains CA State Highway 74 at Lower San Juan Campground. Adjacent to campground sign on southeast side of road.
396
Comment
UC673605
Vicia sativa subsp. nigra
Herbert L. Mason
1926-3-20
2750
Sonoma
s of Calistoga (marshes, along railroad right-of-way)
Comment
CAS-BOT-BC270185
Viola adunca
H. L. Mason
1925-7-16
2170
Tuolumne
Hog Ranch, near Mather
Comment
RSA77752
Viola adunca
H. L. Mason
1923-7-9
579
Tuolumne
Mather.
Comment
UC1101418
Viola adunca
Herbert L. Mason
1946-5-19
12799
Mendocino
n of Fort Bragg; Cleone Lake
Comment
UC581495
Viola adunca
H. L. Mason
1928-4-8
4279
Sonoma
Fort Ross
Comment
UC581488
Viola beckwithii
H. L. Mason
1933-5-28
7239
Placer
Lower Truckee River
Comment
UC581498
Viola douglasii
H. L. Mason
1929-3-15
5072
Santa Clara
San Antonio Valley; Mount Hamilton Range
Comment
SEINET196255
Viola douglasii
H. L. Mason
1934-3-25
7946
Sacramento
Keithly ranch Rio Linda
Comment
JEPS19309
Viola hallii
Herbert L. Mason
1947-5-17
14781
Trinity
Summit of Scott Mountain grade
Comment
CAS-BOT-BC537088
Viola lobata
H. L. Mason
1926-5-29
3290
Placer
2 miles W of Emigrant Gap
Comment
UC1076031
Viola lobata subsp. lobata
Herbert L. Mason
1947-5-17
14772
Unknown
Scott Mountain divide
Comment
UC581496
Viola pedunculata
H. L. Mason
1929-3-1
5017
Monterey
25 miles up the Carmel River (Jamesburg-Arroyo Seco Road)
Comment
UC581524
Viola pinetorum subsp. pinetorum
H. L. Mason
1923-7-28
666
Mariposa
Porcupine Flat, Tioga Pass Road Porcupine Flat
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
RSA125803
Wolffia borealis
H. L. Mason
1955-6-8
14629
Shasta
At the bridge, west edge of Fall River Mill
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
UC635136
Wolffiella lingulata
H. L. Mason
1938-6-12
11850
San Joaquin
1 mi ne Middle River bridge, Roberts Island (Trappers Slough, delta of the San Joaquin River); San Joaquin River, Trappers Slough
Comment
UC600961
Woodsia scopulina
H. L. Mason
1938-7-26
12016
Tuolumne
s of Jack Main Meadows (Andrew Peak); Yosemite Nat'l Park
2438
Comment
CAS-BOT-BC77775
Woodsia scopulina
Herbert L. Mason
1938-7-26
12016
Tuolumne
Andrew Peak, south of Jack Main Meadows
2438
Comment
UC1093880
Wyethia angustifolia
Herbert L. Mason
1938-7-22
11979
Tuolumne
n Hetch Hetchy (Vernon Lake Trail, Yosemite National Park); Sierra Nevada, Yosemite National Park
2072
Comment
CAS-BOT-BC383360
Wyethia helenioides
H. L. Mason
1921-5-14
s.n.
Alameda
Haywards [Hayward]
Comment
UC632873
Wyethia helenioides
H. L. Mason
1936-4-10
11048
Calaveras
road between Murphy's and Angel's Camp
Comment
UC672292
Xylorhiza tortifolia var. tortifolia
H. L. Mason
1926-4-26
3016
Los Angeles
Little Rock
Comment
UC566872
Yabea microcarpa
H. L. Mason
June 1930
5656
Sonoma
Mouth of Gualala River
Comment
UC1099965
Zannichellia palustris
Herbert L. Mason and Malcolm A. Nobs
1948-7-14
113
Merced
pond ca. 3 mi. n. Los Banos (along Old Santa Fe grade); Old Santa Fe grade
Comment
UC1099980
Zannichellia palustris
Herbert L. Mason and Verne Grant
1947-7-10
13352
Modoc
2 mi. e. Alturas (pasture land 1/4 mi. w. of Dorris Reservoir)
Comment
UC1099981
Zannichellia palustris
Herbert L. Mason and Verne Grant
1947-7-8
13282
Lake
near junction of Williams hwy. and Upper lake hwy. Bear Creek
Comment
UC1099983
Zannichellia palustris
Herbert L. Mason and Verne Grant
1947-7-8
13280
Lake
near junction of Williams hwy. and Upper lake hwy. Bear Creek
Comment
UC1099994
Zannichellia palustris
Herbert L. Mason
1928-4-13
4323
Sonoma
marsh & pools near Petaluma
Comment
CAS-BOT-BC456160
Zannichellia palustris
Herbert L. Mason
1928-4-13
4323
Sonoma
Near Petaluma
Comment
UC1099987
Zannichellia palustris
Herbert L. Mason
1932-4-24
6965
Contra Costa
Borden Hwy. near Marsh Creek Rd.
Comment
UCD138293
Zannichellia palustris
Herbert L. Mason; Verne Grant
1947-7-12
13427
Modoc
North of Likely.
Comment
CAS-BOT-BC530485
Zigadenus fremontii
H. L. Mason
1917-3-10
56
Alameda
Lake Temescal
Comment
SEINET12044400
Zigadenus fremontii
H. L. Mason
1921-1
s.n.
San Mateo
Pescadero, La Honda Road on Pescadero Creek
Comment