Click on column header to sort data (* sorts by family); click in leftmost checkbox to select record. CCH Help Page .
Turn on yellow flags to show possible range discrepancies.
Read more ...
?
Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
UC912612
Abronia maritima
H. L. Mason
1927-11-27
4140
Santa Barbara
Along ocean bluff Carpinteria
Comment
UC912624
Abronia pogonantha
Herbert L. Mason
1932-4-3
6916
Fresno
2 mi s Coalinga
Comment
UC672171
Acamptopappus sphaerocephalus var. hirtellus
H. L. Mason
1926-4-26
3001
Los Angeles
Little Rock
Comment
UC964730
Acanthomintha lanceolata
Herbert L. Mason
1940-5-5
12284
San Benito
6 mi se of Pacines (and 2.4 mi e of Emmet School, Panoche Pass); Inner South Coast Ranges, San Carlos Range, Panoche Pass
609
Comment
UC1179053
Acer circinatum
Herbert L. Mason
1947-7-8
13284
Shasta
on Highway #299 just e Hatchet Creek Summit; just e of Hatchet Creek Summit
1219
Comment
UC635162
Acer glabrum var. glabrum
H. L. Mason
1933-9-2
7260
Amador
Silver Lake Sierra Nevada Mountains, Silver Lake
Comment
UC635158
Acer negundo var. arizonicum
H. L. Mason
1928-10-2
4972
Monterey
one mi below Salinas; Salinas River, below Salinas
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
UC912570
Achyrachaena mollis
Herbert L. Mason
1929-3-24
5105
Madera
18 mi e at jct with Yosemite Road Madera
Comment
UC912589
Achyrachaena mollis
Herbert L. Mason
1926-4-10
2802
Alameda
Cedar Mountain (via Arroyo Mocho Canyon); Arroyo Mocho Canyon, Cedar Mountain
Comment
UCD97895
Achyronychia cooperi
Herbert L. Mason
1928-3-10
4177
Riverside
Whitewater River.
Comment
UCD104072
Acmispon brachycarpus
Herbert L. Mason
1940-5-3
12253
Merced
Ortigalita Canyon, two miles northeast of Ortigalita Peak, South Coast Ranges.
304
Comment
UCSB34887
Acmispon grandiflorus
Mason, Renee
1980-3-25
Santa Barbara
East end of Santa Cruz Island, 11 km. east of Research Station
243
Comment
UC635109
Aconitum columbianum
H. L. Mason
1922-7-25
329
Tuolumne
Yosemite Nat'l Park, Porcupine Flat Sierra Nevada Mts., Yosemite Nat'l Park, Porcupine Flat
2133
Comment
UCD98584
Aconogonon davisiae
Herbert L. Mason
1940-7-30
12353
Alpine
Sierra Nevada, north of Carson Pass.
2682
Comment
UC571024
Acourtia microcephala
Herbert L. Mason
1923-6-17
471
Ventura
bluffs along coast Ventura
Comment
UCD128510
Acroptilon repens
Herbert L. Mason
1942-7-8
12553
Stanislaus
two miles east of Newman, at junction of Patterson-Stevinson roads.
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
POM270462
Actaea rubra subsp. arguta
H. L. Mason
1927-7-31
4007
Santa Cruz
Mt. Herman, Santa Cruz Mts.
Comment
UCD137209
Adiantum jordanii
Herbert L. Mason
1925-3-7
1278
Alameda
0.5 mile southwest of Sunol.
Comment
UC1081560
Ageratina occidentalis
Herbert L. Mason
1936-8-1
11487
Mono
Leevining Canyon, Yosemite National Park, Sierra Nevada Sierra Nevada, Yosemite National Park, Leevining Canyon
Comment
CAS-BOT-BC295574
Agnorhiza elata
H. L. Mason
1938-7-16
11952
Madera
Four miles south of Miami Ranger Station
1219
Comment
UC635176
Agoseris heterophylla var. cryptopleura
H. L. Mason
1928-5-4
4503
El Dorado
4 mi n of Shingle Springs; Green Valley
Comment
UC565512
Agoseris heterophylla var. heterophylla
H. L. Mason
1932-4-24
6980
Amador
3 mi s Ione
Comment Read comments Oct 9 2006
UC1275789
Agrostis
Herbert L. Mason
1963-6-24
15216
Mono
Paoha Island Mono Lake
Comment
UC110011
Agrostis alba
Herbert L. Mason
1948-9-4
13653
Mono
Rush Creek Mono Lake
Comment
UC1195920
Agrostis alba
Herbert L. Mason
1958-8-9
14893
Tuolumne
w Hetch Hetchy Dam; Sierra Nevada, Yosemite National Park, Swamp Lake area
1584
Comment
UC1110539
Agrostis exarata
Herbert L. Mason
1939-8-3
12206
Placer
7 mi nw Tahoe City (Squaw Valley); Squaw Valley
1889
Comment
UC1111014
Agrostis idahoensis
Herbert L. Mason
1938-7-10
11909
Tuolumne
South Island Swamp Lake (w of Hetch Hetchy Dam, Yosemite National Park); Sierra Nevada, Yosemite National Park, , Hetch Het
1584
Comment
UC965490
Agrostis idahoensis
Herbert L. Mason
1952-8-16
14486 b
Nevada
meadow opposite University of California, Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UCD53002
Agrostis oregonensis
H. L. Mason
1939-7-28
11971
Tuolumne
Vernon Lake Trail, north and east of Hetch-Hetchy, Yosemite National Park.
Comment
UC1100123
Agrostis scabra
Herbert L. Mason
1948-9-5
13678
Mono
island in Mono Lake Mono Lake
Comment
UCD53396
Agrostis scabra
H. L. Mason
1938-7-25
12010
Tuolumne
Deep Lake, east base of Mahan Peak, Yosemite National Park.
Comment
CAS-BOT-BC138241
Aira caryophyllea var. caryophyllea
H. L. Mason
1921-5-29
s.n.
San Mateo
Roadside near Arroyo de los Frijoles.
Comment
UC1100221
Aira praecox
Herbert L. Mason
1946-5-18
12764
Mendocino
pygmy forest e Fort Bragg
Comment
UC1102960
Alisma
Herbert L. Mason
1958-8-9
14877
Tuolumne
w Hetch Hetchy Dam; Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
CAS-BOT-BC238449
Alisma gramineum
Herbert L. Mason
1955-8-13
14653 C
Modoc
South end of Goose Lake.
Comment
UC985666
Alisma gramineum
Herbert L. Mason
1947-8-15
13557
Modoc
spring feeding into w side Goose Lake (11 mi from Davis Creek)
Comment
UCD137903
Alisma gramineum
Herbert L. Mason
1955-8-13
14653 A
Modoc
southwest side of Goose Lake.
Comment
POM313035
Alisma triviale
H. L. Mason
1955-8-13
14653 C
Modoc
S end of Goose Lake.
Comment
UC635255
Allium burlewii
Herbert L. Mason
1927-6-15
3770
San Bernardino
on summit of ridges about Mt. Baldy San Gabriel Mts., Baldy
2438
Comment
UC635258
Allium campanulatum
H. L. Mason
1923-7-20
619
Tuolumne
near Carl Inn (Ackerson Meadows); Sierra Nevada Mountains, Yosemite National Park
Comment
UC635262
Allium campanulatum
H. L. Mason
1926-5-29
3296
Nevada
3 mi w Cisco
1767
Comment
UC635259
Allium dichlamydeum
H. L. Mason
1928-4-25
4378
San Francisco
Hunter's Point
Comment
POM196557
Allium peninsulare var. franciscanum
H. L. Mason
1921-5-13
s.n.
San Mateo
Jasper Ridge near Sand Hill Caves
Comment
UC635248
Allium serra
H. L. Mason
1928-4-29
4421
Contra Costa
Sycamore Canyon, s slope of Mount Diablo Mount Diablo, Sycamore Canyon
Comment
UC635249
Allium serra
H. L. Mason
1929-3-29
5135
Contra Costa
Marsh Creek Road 2 mi e Claton; Marsh Creek Road
Comment
UC1199838
Allium tribracteatum
Herbert L. Mason
1938-7-25
12026
Tuolumne
Bailey Ridge Sierra Nevada, Yosemite National Park, Bailey Ridge
2834
Comment
UC908934
Allophyllum divaricatum
Herbert L. Mason
1926-5-31
3361
Calaveras
1 1/2 mi. w. Calaveras Grove
Comment
UC908937
Allophyllum divaricatum
Herbert L. Mason
1934-5-5
8114
Lake
e. side Mt. Konocti
Comment
UC907888
Allophyllum gilioides subsp. gilioides
Herbert L. Mason
1949-4-23
14003
Kern
below Breckenridge Mt. rd. Kern Canyon
Comment
UC908429
Allophyllum gilioides subsp. gilioides
Herbert L. Mason
1938-5-8
11806
Santa Barbara
vicinity of summit Figueroa Mt.
Comment
UC908478
Allophyllum gilioides subsp. gilioides
Herbert L. Mason
1928-1
4427
Contra Costa
s. slope Mt. Diablo (Sycamore Canyon); , Sycamore Canyon
Comment
UC909018
Allophyllum gilioides subsp. violaceum
Herbert L. Mason
1941-7-16
12487
El Dorado
Lake Tahoe, Cold Creek
Comment
UCR111260
Allophyllum gilioides subsp. violaceum
H. L. Mason
1941-7-16
12487
El Dorado
Sierra Nevada Mtns., Cold Creek, south of Lake Tahoe.
1912
Comment
UC908792
Allophyllum glutinosum
Herbert L. Mason
1926-4-30
3131
Riverside
2 mi. s. Temecula
Comment
UC665616
Allophyllum integrifolium
Herbert L. Mason
1941-7-12
12479
Tuolumne
w. Hetch Hetchy Valley (Miguel Meadow); Sierra Nevada, Yosemite Nat'l Park, Miguel Meadow
Comment
UC908479
Allophyllum integrifolium
Herbert L. Mason
1941-7-10
12483
Tuolumne
e. North Mt. (near w. border of Yosemite Nat'l Park); Yosemite Nat'l Park
Comment
SBBG64464
Allophyllum violaceum
H. L. Mason
1941-7-16
12487
El Dorado
Cold Crk, S of Lake Tahoe
2286
Comment
UC1076204
Alnus incana subsp. tenuifolia
Herbert L. Mason
1926-5-30
3325 a
Alpine
on road to Kit Carson Pass
1889
Comment
UC1093925
Alnus incana subsp. tenuifolia
Herbert L. Mason
1929-10-4
5461
Placer
on Hwy 40 1 mi n Cisco
Comment
UC629713
Alnus incana subsp. tenuifolia
Herbert L. Mason
1939-7-18
12172
El Dorado
1 mi w Grass Lake Meadow (n side of pass); Luther Pass
2346
Comment
UC1076356
Alnus rhombifolia
H. L. Mason
1930-10-25
5758
Monterey
Headwaters of the Arroyo Seco Santa Lucia Mts.
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
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
SEINET200137
Amaranthus californicus
H. L. Mason, V. Grant
1947-7-10
13326
Modoc
Dorris Reservoir 2 miles east of Alturas
Comment
POM312355
Amaranthus californicus
H. L. Mason
1945-8-24
12676
Lake
East shore, Lower Lake.
Comment
UC962126
Amaranthus deflexus
Herbert L. Mason
1927-6-20
3792
Alameda
Berkeley
Comment
UC912212
Ambrosia chamissonis
Herbert L. Mason
1927-10-4
4119
Santa Cruz
mouth of Waddell Creek; Ano Nuevo Point
Comment
UC555442
Amelanchier utahensis
H. L. Mason
1930-10-25
5743
Monterey
Headwaters of Arroyo Seco; Santa Lucia Mts.
Comment
UC635148
Ammannia robusta
H. L. Mason
August, 1930
5712
Lake
Clear Lake
Comment
UC555400
Amorpha californica var. californica
H. L. Mason
1923-6-18
510
Ventura
Red Reef Canyon
Comment
GH424612
Amsinckia douglasiana
H. L. Mason
1932-3-19
6815
Unknown
Road from Mountain House to Midway, west of Tracy
Comment
UC573083
Amsinckia lycopsoides
H. L. Mason
1932-3-19
6814
San Joaquin
w of Tracy (road from Mountain House to Midway)
Comment
UC573130
Amsinckia tessellata var. tessellata
H. L. Mason
1932-4-2
6901
Kern
3 mi w Muroc; Mojave Desert
Comment
UCD128846
Anaphalis margaritacea
Herbert L. Mason
7-8 Jul 1939
12152
Nevada
3 miles west of Donner Summit.
2072
Comment
UC581123
Ancistrocarphus filagineus
H. L. Mason
1934-4-28
8093
Sonoma
Jenson's Ranch; Dohrmann Creek
Comment
UC581152
Ancistrocarphus filagineus
H. L. Mason
1935-3-27
8173
Fresno
w of Fresno
Comment
UC581173
Ancistrocarphus filagineus
H. L. Mason
1935-3-30
8257
San Luis Obispo
Cholame Valley
Comment
UC632853
Ancistrocarphus filagineus
H. L. Mason
1936-4-26
11096
Lake
Bartlett Springs
Comment
UC673624
Ancistrocarphus filagineus
H. L. Mason
1933-4-30
7230
Lake
near Aetna Springs
Comment
UC581121
Androsace elongata subsp. acuta
H. L. Mason
1934-3-28
8002
Kern
n facing slopes Kern River Canyon; n facing slopes Kern River Canyon
Comment
UC635716
Androsace elongata subsp. acuta
H. L. Mason
1932-3-19
6820
San Joaquin
two mi e Midway
Comment
UC964762
Androsace elongata subsp. acuta
Herbert L. Mason
1938-4-16
11729
Kern
Isabella
Comment
CAS-BOT-BC391766
Anemone deltoidea
H. L. Mason
1929-5-9
5280
Mendocino
Bull Creek Flat
Comment
UC635126
Anisocoma acaulis
H. L. Mason
1932-4-2
6897
Kern
3 mi w Muroc; Mohave Desert
Comment
UC912217
Antennaria argentea
Herbert L. Mason
1925-6-27
2118
Tuolumne
near, (at Hog Ranch) Mather
Comment
UC712400
Antennaria media
H. L. Mason
1936-7-23
11273
Tuolumne
alpine slopes of Mount conness; Sierra Nevada
3505
Comment
CAS-BOT-BC77253
Antennaria microphylla
H. L. Mason
1939-7-8
12162
El Dorado
Northeast end of Fallen Leaf Lake
1950
Comment
SEINET10920153
Antennaria rosea
Herbert L. Mason
1939-7-8
Mason 12162
El Dorado
Open pine forest, northeast end of Fallen Leaf Lake.
1951
Comment
UCD56149
Anthoxanthum aristatum
Herbert L. Mason
1946-5-18
12766
Mendocino
east of Mendocino City.
Comment
UC566814
Anthriscus caucalis
Herbert L. Mason
1926-6-6
3379
Santa Cruz
Felton
Comment
UC672557
Antirrhinum coulterianum
Herbert L. Mason
1926-5-2
3194
Riverside
Aguanga Valley
Comment
UC672565
Antirrhinum nuttallianum subsp. nuttallianum
Herbert L. Mason
1926-5-2
3203
Riverside
Temecula Valley
Comment
UC1178981
Antirrhinum vexillocalyculatum subsp. vexillocalyculatum
Herbert L. Mason
1946-5-30
12811
Lake
e of Indian Valley (North Fork of Cache Creek); North Fork of Cache Creek
548
Comment
UC623308
Apocynum androsaemifolium
H. L. Mason
1939-5-18
12103
Napa
near summit of Wooden Valley Grade
Comment
UC623309
Apocynum androsaemifolium
H. L. Mason
1939-5-18
12104
Napa
Wooden Valley
Comment
UC1076224
Apocynum cannabinum
Herbert L. Mason
1942-7-15
12555
Solano
4.5 mi. n.w. of Vacaville; Bucktown Ranch
Comment
UC581107
Aquilegia eximia
H. L. Mason
1934-9-9
8150
Monterey
Santa Lucia Ranger Station Santa Lucia Mountains
Comment
POM270508
Aquilegia pubescens
H. L. Mason
1923-7-31
678
Tuolumne
Dana Fork, Sierra Nevada Mtns
Comment
UC635108
Aquilegia pubescens
H. L. Mason
1923-7-31
678
Tuolumne
Dana Fork Sierra Nevada Mtns
Comment
GH378696
Arabis blepharophylla
H. L. Mason
1925-3-1
1271
Unknown
San Francisco, Bernal heights
Comment
UC565469
Arabis blepharophylla
H. L. Mason
1927-4-26
5216
Marin
w of Alpine Lake (on road from Fairfax to crest of Bolinas Ridge); Bolinas Ridge
Comment
UC635267
Aralia californica
H. L. Mason
August, 1930
5735
Mendocino
rd. from Willits to Fort Bragg
Comment
UC1076328
Arceuthobium americanum
Herbert L. Mason
1924-6-20
1079
Plumas
near lake Gold Lake
Comment
UC1039599
Arceuthobium campylopodum
Herbert L. Mason
1929-12-1
5515
Monterey
Huckleberry Hill Carmel
Comment
UC1076320
Arceuthobium campylopodum
Herbert L. Mason
1926-6-1
2590
Lake
Upper Lake to Elk Mtn
Comment
UC1076323
Arceuthobium campylopodum
H. L. Mason
1932-8-27
7168
Mendocino
Point Arena
Comment
UC1076327
Arceuthobium campylopodum
Herbert L. Mason
1924-6-26
1101
Tuolumne
Ridge n of Middle Fork near Mather Sierra Nevada, Yosemite National Park
Comment
UC571189
Arctostaphylos andersonii
Herbert L. Mason
1929-12-1
5514 a
Santa Cruz
between Davenport and Felton; Empire grade
Comment
UC571088
Arctostaphylos canescens subsp. canescens
H. L. Mason
1926-3-14
2735
Napa
Toll House Canyon Mount St. Helena
Comment
UC571089
Arctostaphylos canescens subsp. canescens
H. L. Mason
1926-2-28
2670
Marin
West Peak Mt. Tamalpais
Comment
JEPS19873
Arctostaphylos densiflora
H. L. Mason
1931-3-8
Sonoma
w Santa Rosa; Vine Hill School
Comment
GH350477
Arctostaphylos hookeri
H. L. Mason
1923-6-23
570
Unknown
Del Monte
Comment
GH350713
Arctostaphylos myrtifolia
H. L. Mason
1928-5-3
4468
Unknown
One mile south of Ione
Comment
RSA381124
Arctostaphylos myrtifolia
George Mason, John M. Tucker, Roman Gankin, C. T. Mason
1956-10-27
194
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
CAS-BOT-BC45549
Arctostaphylos nevadensis
George Mason; Roman Gankin
1958-5-25
s.n.
El Dorado
On either side of gravel road leading down to a bog at eastern foot of Meyer's grade, 50 yards n. of U.S. Highway 50.
Comment
UC571212
Arctostaphylos nevadensis
H. L. Mason
1926-5-30
3318
El Dorado
ridge between Emerald Bay and Cascade Lake
Comment
RSA64472
Arctostaphylos nissenana
H. L. Mason
1945-02
s.n.
El Dorado
Placerville
Comment Read comments Jun 22 2012
UC571222
Arctostaphylos nummularia
H. L. Mason
1925-2-1
1219
Marin
Mount Tamalpais
Comment
UC634746
Arctostaphylos nummularia
Herbert L. Mason
1927-7-31
3997
Santa Cruz
hills s Mt. Herman
Comment
UC571085
Arctostaphylos pumila
H. L. Mason
1923-6-23
570
Monterey
Del Monte
Comment
UC571220
Arctostaphylos pungens
H. L. Mason
1930-10-25
5764
Monterey
hills six mi e Santa Lucia Ranger Stations
Comment
UC571217
Arctostaphylos purissima
H. L. Mason
1923-6-15
416 a
Santa Barbara
Harris Grade
Comment
UC571224
Arctostaphylos stanfordiana
H. L. Mason
1925-1-22
1202
Napa
Wooden Valley Grade
Comment
UC571074
Arctostaphylos tomentosa subsp. bracteosa
H. L. Mason
1931-11-1
5883
Monterey
road between Monterey and Carmel
Comment
UC571227
Arctostaphylos tomentosa subsp. bracteosa
H. L. Mason
1923-6-23
562
Monterey
Del Monte
Comment
GH245841
Arctostaphylos virgata
H. L. Mason
1926-2-21
2650
Unknown
Near the summit of road from Inverness to Point Reyes Light
Comment
GH362400
Arctostaphylos viscida
H. L. Mason
1928-5-3
4466
Unknown
one mile south of Ione
Comment
SEINET11988273
Arctostaphylos viscida
G. Mason, Tucker, J. M.; Gankin, R.
1956-1
193
Calaveras
0.5 mi N of Mokalomne River behind high cliffs, right across river from Comanche
Comment
UC571236
Arctostaphylos viscida subsp. viscida
H. L. Mason
1926-5-28
3264
Placer
hills near Auburn
Comment
UC1076490
Arenaria macradenia var. macradenia
Herbert L. Mason
1926-4-26
2977
Los Angeles
Summit of Mint Canyon
Comment
UCD95185
Argemone munita
Steve Mason
1993-5-2
31
Los Angeles
Mojave Desert, off W. State Rt. 138, 1 mile past W. 110th Street., S on dirt road, 0.4 mile in, 30' off west roadside.
762
Comment
UC1081529
Arnica cordifolia
Herbert L. Mason
1936-7-27
11368
Tuolumne
w of, (at Gaylor Lakes) Tioga Pass; Sierra Nevada, Yosemite National Park, Gaylor Lakes
3200
Comment
UC912236
Artemisia pycnocephala
Herbert L. Mason
1924-10-19
1128
San Francisco
San Francisco
Comment
UC543763
Asarum caudatum
Herbert L. Mason
1925-9-27
2236
Contra Costa
San Leandro Canyon (Redwood Canyon); Oakland Hills
Comment
CAS-BOT-BC400773
Asarum lemmonii
H. L. Mason
1923-7-3
306
Tuolumne
Sierra Nevada Mountains, Yosemite National Park. Near Carl Inn, Big Oak Flat Road
1524
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
SD47976
Asclepias californica
Herbert L. Mason
1935-4-30
6263
Kern
Hobo Hot Springs, Kern River Canyon.
Comment
UC1191136
Asclepias californica
Herbert L. Mason
1957-5-11
14743
San Benito
Headwaters of Clear Creek
Comment
UC566928
Asclepias cordifolia
H. L. Mason
1923-7-14
598
Tuolumne
e Mather (near Hog Ranch)
Comment
UC566929
Asclepias eriocarpa
Herbert L. Mason
1923-6-14
374
Monterey
river bank by King City Bridge; King City
Comment
UC566931
Asclepias vestita
H. L. Mason
1934-3-30
8038
Los Angeles
Yucca Grove Antelope Valley
Comment Read comments Dec 13 2011
SEINET197565
Asclepias vestita subsp. vestita
Herbert L. Mason
1940-5-5
12274
Merced
Twin Peaks, Los Banos Creek, San Carlos Range.
610
Comment
UC912689
Aspidotis californica
Herbert L. Mason
1936-4-12
11075
Amador
Lancha Plana
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
POM312494
Aster occidentalis
H. L. Mason
1947-8-9
13480
Modoc
East side of Fairchild Swamp, north of Alturas
Comment
UC1178868
Astragalus breweri
Herbert L. Mason
1937-5-27
11552
Lake
ten mi s Kelseyville; s of Kelseyville
Comment
CAS-BOT-BC178632
Astragalus coccineus
H. L. Mason
1926-4-27
3044
Los Angeles
Rock Creek, Mojave Desert slope of San Gabriel Mountains
Comment
CAS-BOT-BC186726
Astragalus gambelianus
H. L. Mason
1929-3-23
5098
Madera
Hills back of Madera
Comment
UC635294
Astragalus gambelianus
H. L. Mason
1932-3-19
6834
San Joaquin
two mi e Midway (near Tracy); e of Midway, near Tracy
Comment
UC714404
Astragalus kentrophyta var. danaus
Herbert L. Mason
1936-7-31
11468
Mono
Tioga Crest e Saddlebag Lake (Tioga Pass region); Sierra Nevada, Tioga Pass Region, e of Saddlebag Lake
3474
Comment
UC712307
Astragalus lentiginosus var. ineptus
H. L. Mason
1936-7-29
11410
Mono
vicinity Mount Dana (Dana Plateau, Sierra Nevada); Sierra Nevada, vicin Mount Dana, Dana Plateau
3657
Comment
UC635306
Astragalus oxyphysus
H. L. Mason
1930-3-30
5541
San Benito
fourteen mi below Pinnacles (San Benito River Canyon); , below Pinnacles
Comment
UC1192369
Athyrium filix-femina var. cyclosorum
Herbert L. Mason
1946-7-24
12938
Marin
Third lake (at Double Point) s of Bear Valley (on rd to Lake Ranch)
Comment
UC1076498
Atriplex coulteri
Herbert L. Mason
1927-11-27
4149
Santa Barbara
Carpenteria Carpenteria (along ocean bluff)
Comment
UCD97637
Atriplex prostrata
Herbert L. Mason
1947-8-9
13477
Modoc
on east side of Fairchild Swamp, north of Alturas.
Comment
UC1076209
Atriplex semibaccata
Herbert L. Mason
1927-9-24
4087
Santa Barbara
on hill slopes about West Ranch (Santa Cruz Island); , about West Ranch
Comment
UC1093984
Azolla filiculoides
Herbert L. Mason
1937-6-17
11544
Alameda
Thornhill pool Moraga Rd. Oakland
Comment
POM312949
Azolla microphylla
Herbert L. Mason, Verne Grant
1946-8-14
13018
Butte
Canal near big pond on Sacramento Outing Club, Butte sink.
Comment
UC672310
Baccharis glutinosa
H. L. Mason
1932-8-26
7140
Mendocino
Navarro River
Comment
UC672312
Baccharis glutinosa
H. L. Mason
1928-9-30
4964
San Joaquin
near, San Joaquin Delta Holt; San Joaquin Delta
Comment
SEINET7881864
Baeria fremontii
Herbert L. Mason
1952-1
14260
Contra Costa
3.5 miles south of Byron
Comment
UC642882
Barbarea orthoceras
H. L. Mason
1936-7-31
11453
Mono
e of Saddlebag Lake (Tioga Crest); Sierra Nevada, Tioga Crest
3413
Comment
CAS-BOT-BC145819
Beckmannia syzigachne
Herbert L. Mason
1948-9-4
13669 b
Mono
Mono Lake. Rush Creek.
Comment
SACT000425
Beckmannia syzigachne
Herbert Mason
1953-7-7
Sierra
Sierra Valley; Common.
Comment
SEINET200167
Beckmannia syzigachne
H. L. Mason
1953-7-7
14558
Sierra
Sierra Valley pond 1.5 mi E of Calpine
Comment
UC1100215
Beckmannia syzigachne
Herbert L. Mason
1947-7-11
13367
Modoc
irrigation ditch by Jones Lane (off Hwy 395, s of Alturas)
Comment
CAS-BOT-BC75894
Berberis pinnata
H. L. Mason
1922-3-29
s.n.
Santa Cruz
Liddell Creek Road near ocean.
Comment
UC1076432
Berberis pinnata
Herbert L. Mason
1926-2-21
2652
Marin
rd from Inverness to Point Reyes Light
Comment
UC1076434
Berberis pinnata
Herbert L. Mason
1925-3-10
1298
Contra Costa
Sycamore Canyon; Mt Diablo
Comment
JEPS47764
Berberis pinnata subsp. insularis
Herbert L. Mason
1927-9-25
4103
Santa Barbara
along roadway through Buena Vista Canyon; Santa Cruz Isl
Comment
UC1076439
Berberis pinnata subsp. insularis
Herbert L. Mason
1927-9-25
4103
Santa Barbara
along roadway through Buena Vista Canyon; Santa Cruz Isl
Comment
UC1192261
Bergia texana
Herbert L. Mason, S. Galen Smith
1948-8-18
8347
Kings
Just west of Stratford
Comment
UC1192267
Bergia texana
Herbert L. Mason
1945-8-24
12681
Lake
East Shore, Lower Lake
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
UC1178976
Bidens tripartita
Herbert L. Mason
1939-7-11
12123
Tuolumne
just w of Hetch Hetchy Dam (Swamp Lake, Yosemite National Park); Yosemite National Park, Swamp Lake
1584
Comment
UC642720
Boechera depauperata
H. L. Mason
1936-7-28
11401 a
Mono
vicinity Mount Dana; Sierra Nevada, Dana Plateau
3657
Comment
UC559955
Boechera divaricarpa
H. L. Mason
1936-7-23
11282
Tuolumne
Mount Conness Sierra Nevada
3352
Comment
GH378753
Boechera lemmonii
H. L. Mason
1936-7-24
11326
Unknown
White Mountains, Conness Range, Sierra Nevada
3505
Comment
UC714371
Boechera lyallii
Herbert L. Mason
1936-7-24
11351
Tuolumne
White Mountain Mount Conness Range
3505
Comment
GH378833
Boechera paupercula
H. L. Mason
1936-7-28
11416
Unknown
Dana Plateau, Sierra Nevada
3657
Comment
CAS-BOT-BC14289
Boechera pinetorum
H. L. Mason
1922-8-20
344
Tuolumne
Sierra Nevada Mountains. Yosemite National Park. Tuolumne Meadows. Lamberts Dome.
2743
Comment
JEPS53156
Boechera pinetorum
H. L. Mason
1922-8-20
344
Tuolumne
Lambert Dome Sierra Nevada Mountains, Yosemite National Park, Tuolumne Me
2743
Comment
UC565471
Boechera pinetorum
H. L. Mason
1922-8-20
344
Tuolumne
Lambert Dome Sierra Nevada Mountains, Yosemite National Park, Tuolumne Me
2743
Comment
POM310936
Boisduvalia densiflora var. densiflora
H. L. Mason
1952-7-17
14380
Plumas
Sierra Nevada: Along Western Pacific tracks just south of Beckwourth, Sierra Valley.
1524
Comment
UC1077091
Bolandra californica
Herbert L. Mason
1938-7-22
11969
Tuolumne
Vernon Lake Trail n Hetch Hetchy; Yosemite National Park
2072
Comment
UC1100846
Bolboschoenus fluviatilis
Herbert L. Mason
1945-8-24
12673
Lake
e shore Lower Lake; e shore Lower Lake
Comment
UC1100853
Bolboschoenus maritimus
Herbert L. Mason
1945-9-19
12734
Butte
nw Pennington (Gray Lodge Game Refuge); , nw of Pennington
Comment
UC1100857
Bolboschoenus maritimus
Herbert L. Mason
1945-9-19
12731
Butte
nw Pennington (Gray Lodge Game Refuge); , nw of Pennington
Comment
UC1100888
Bolboschoenus maritimus
Herbert L. Mason and Verne Grant
1947-6-26
13269
Solano
Cordelia Slough, Suisun Marsh.
Comment
UC1100890
Bolboschoenus maritimus
Herbert L. Mason and Verne Grant
1946-8-28
13076 B
Sonoma
Mouth of Tolay Creek.
Comment
UC672623
Botrychium multifidum
H. L. Mason
1923-8-8
724
Tuolumne
Tuolumne Meadows, Morrain[sic] Flat Sierra Nevada Mountains, Yosemite National Park
Comment
UC566877
Bowlesia incana
H. L. Mason
1928-3-4
4169 a
Contra Costa
Shell Ridge
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
UC570898
Boykinia occidentalis
H. L. Mason
1928-7-11
4889
Sonoma
canyon two mi n Fort Ross; n of Fort Ross
Comment
UC570899
Boykinia occidentalis
Herbert L. Mason
1927-7-27
3976
Santa Cruz
w end Big Basin; w end of Big Basin
Comment
UC635681
Brandegea bigelovii
H. L. Mason
1928-3-10
4213
Riverside
Coachella Mountains, Hidden Springs Canyon Hidden Springs Canyon; Coachella Mountains, Hidden Springs Canyon
Comment
UC1101411
Brasenia schreberi
Herbert L. Mason
1945-6-29
12620
Lake
Boggs Lake at base Mt. Hanna; Boggs Lake at base of Mt. Hanna
Comment
UC1101413
Brasenia schreberi
Herbert L. Mason
1937-7-22
11600
Tuolumne
w Hetch Hetchy Dam (Swamp Lakes, just s of Miguel Meadows, Yosemite National Park); Yosemite National Park, w of Hetch Hetchy Dam, Swamp Lakes
1584
Comment
UC581157
Brickellia atractyloides
H. L. Mason
1935-3-29
8221
San Bernardino
w of Searles Lake; Poison Canyon, Mojave Desert
Comment
GH386521
Brickellia californica
H. L. Mason
1930-10-25
5770
Unknown
Banks of San Antonio River
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
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
UC1108827
Bromus carinatus var. carinatus
Herbert L. Mason
1938-7-22
11970
Tuolumne
n of Hetch Hetchy Valley (Yosemite National Park, Vernon Trail Lake); Sierra Nevada, Yosemite National Park, Vernon Trail Lake
1981
Comment
UC1100203
Bromus hordeaceus
Herbert L. Mason and Malcolm A. Nobs
1949-4-27
728
Solano
Suisun State Game Refuge
Comment
UC1077129
Buddleja utahensis
Herbert L. Mason
1940-3-22
12230
Inyo
Titus Canyon Death Valley National Monument, Grapevine Mountains (Grapevine Mountains)
Comment
SEINET7547864
Bulbostylis capillaris
H. L. Mason
1938-7-6
11858
Tuolumne
Yosemite National Park. Dry ridge between Swamp Lake and Miguel Meadow
1646
Comment
UC555386
Caesalpinia virgata
H. L. Mason
1928-3-10
Riverside
Coachella Mts., Hidden Springs Canyon
Comment
UC673339
Cakile edentula
H. L. Mason
1927-10-4
4134
Santa Cruz
mouth of Waddell Creek and Ano Nuevo Point Waddell Creek; Ano Nuevo Point, Waddell Creek
Comment
UCD57206
Calamagrostis canadensis
H. L. Mason
1958-8-6
14862
Tuolumne
Yosemite National Park, NW of Hetch-Hetchy, Swamp Lake meadow.
Comment
CAS-BOT-BC185144
Calamagrostis nutkaensis
H. L. Mason
1921-5-29
s.n.
San Mateo
Near Arroyo de Las Frijoles.
Comment
UC769995
Calandrinia ciliata
Herbert L. Mason
1934-3-25
7942
Sacramento
Keithly Ranch Sacramento Valley, Rio Linda
Comment
GH48919
Callitriche autumnalis var. bicarpellaris
H. L. Mason
1928-5-3
4445
Unknown
four miles north of Clementes
Comment
UC570781
Callitriche hermaphroditica
H. L. Mason
1928-5-3
4445
San Joaquin
4 mi n Clementes; ; San Joaquin Co.
Comment
UC570758
Callitriche heterophylla var. bolanderi
H. L. Mason
1929-3-24
5111
Madera
18 mi e Madera (junction of Yosemite Road)
Comment
UC570759
Callitriche marginata
H. L. Mason
1927-4-23
3697
San Mateo
Pescadero Creek near Bloomquist's Mill
Comment
UC570760
Callitriche marginata
H. L. Mason
1932-4-17
6961
Santa Clara
Pacheco Pass, near summit
Comment
UC570776
Callitriche marginata
H. L. Mason
Apr 1930
5544
Calaveras
6 miles west of Valley Springs
Comment
CAS-BOT-BC95095
Callitriche palustris
Herbert Louis Mason; Verne Grant
1947-7-11
13366
Modoc
By Jones Lane, off Highway 395, S of Alturas.
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
UC1101518
Callitriche verna
Herbert L. Mason and Verne Grant
1947-7-11
13366
Modoc
s of 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
UC1077083
Calochortus albus
Herbert L. Mason
1946-6-7
12835
Santa Barbara
s of Little Pine Mt. (between Camuese Creek and Oso Creek)
762
Comment
CAS-BOT-BC492159
Calochortus albus
N. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
UC672157
Calochortus amabilis
Herbert L. Mason
1934-4-28
8068
Sonoma
Jensen's Ranch Dohrman Creek
Comment
UC604422
Calochortus amoenus
H. L. Mason
1938-5-10
11819
Tulare
sw of Badger (near Auckland Ranch on General Grant National Park road)
457
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
CAS-BOT-BC91004
Calycanthus occidentalis
H. L. Mason
1934-4-28
8067
Sonoma
Jensen Ranch, head of Dohrman Creek.
Comment
UC565517
Calycoseris parryi
H. L. Mason
1932-4-1
6880
Kern
5 mi s of, on road from Roosevelt to Muroc Muroc; Mojave Desert
Comment
UC912473
Calyptridium monospermum
Herbert L. Mason
1923-7-14
595
Tuolumne
Mather
Comment
HSC24623
Calyptridium quadripetalum
H. L. Mason
1936-4-26
11097
Lake
Barlett Springs, 16 mi. NE of Clear Lake
793
Comment
UC1191640
Calystegia sepium subsp. binghamiae
Herbert L. Mason, Verne Grant
1947-6-26
13251
Solano
Cordelia Slough , Cordelia Slough (Suisun Marsh)
Comment
UC672138
Camassia quamash
Herbert L. Mason
1929-4-26
5225
Marin
Inverness Ridge, near summit of Light House Road Inverness Ridge; , Light House Road
Comment
UC1076526
Camassia quamash subsp. breviflora
Herbert L. Mason
1936-7-7
11154
Mariposa
w of Dark Hole (Yosemite National Park, Research Reserve); Sierra Nevada, Yosemite National Park
Comment
UC672139
Camassia quamash subsp. breviflora
Herbert L. Mason
1926-5-29
3300
Nevada
Truckee River; Sierra Nevada, Truckee River
Comment
POM257265
Camissonia campestris subsp. campestris
H. L. Mason
1929-3-23
5089
Tulare
Three miles above Springville, Middle Tule River.
Comment
SEINET10905986
Campanula californica
Mason
1946-7-4
Mason 12894
Sonoma
Pitkin Marsh, between Santa Rosa and Forestville
Comment
CAS-BOT-BC266444
Campanula exigua
H. L. Mason
1935-5-9
8310
Stanislaus
Slopes of Red Mountains, Arroyo del Puerto, Mount Hamilton Range
Comment
GH420320
Campanula exigua
H. L. Mason
1935-5-9
8310
Unknown
Red Mountains, Arroyo del Puerto, Mount Hamilton Range
Comment
SEINET3557292
Campanula exigua
Herbert L. Mason
1940-5-5
12281
San Benito
Panoche Pass, about 20 miles SE of Paicines
Comment
SEINET10463136
Campanula prenanthoides
Mason
1925-8-11
Mason 2218
Tuolumne
BIG OAK FLAT RD TO TUOLUMNE GROVE
Comment
CAS-BOT-BC76300
Canbya candida
Herbert L. Mason
1935-4-30
10006
Kern
Walker Pass.
Comment
UC545820
Canbya candida
Herbert L. Mason
1935-4-30
10006
Kern
Walker Pass
Comment
UC1081567
Cardamine californica
Herbert L. Mason
1936-4-11
11061
Calaveras
San Antonio Creek s Sheep Ranch; San Antonio Creek s of Sheep Ranch
Comment
UC673296
Cardamine californica
H. L. Mason
1930-3-30
5528
San Benito
14 mi below Pinnacles (San Benito River Canyon); , below Pinnacles
Comment
UC635581
Cardionema ramosissimum
Herbert L. Mason
1926-4-18
2862
San Francisco
San Francisco
Comment
CAS-BOT-BC245194
Carex atherodes
Herbert Louis Mason; Verne Grant
1947-7-12
13424
Modoc
Near S end of west side road, along railroad tracks, Pit River Valley, S of Alturas.
Comment
UC1100433
Carex atherodes
Herbert L. Mason, Verne Grant
1947-7-12
13424
Modoc
s Alturas (irrigation ditch near s end of west side road along railroad tracks); Pit River Valley
Comment
POM313130
Carex athrostachya
H. L. Mason
1947-7-9
13300
Lassen
Irrigation ditch 5 miles east of Bieber.
Comment
YM-YOSE65382
Carex athrostachya
H. L. Mason
1938-8-1
12071
Tuolumne
MEADOW IN TILTILL VALLEY
1676
Comment
UC1100430
Carex aurea
Herbert L. Mason, Lawrence W. Reinecke
1937-7-22
11586
Tuolumne
just s Miguel Meadows (w of Hetch Hetchy Dam); Yosemite National Park, Swamp Lakes
1584
Comment
UC1100431
Carex aurea
Herbert L. Mason, Lawrence W. Reinecke
1937-7-21
11558
Tuolumne
just nw Hetch Hetchy Dam; Yosemite National Park, Miguel Meadows
Comment
CHSC2105
Carex barbarae
P. Mason
1937-5-15
Butte
Fish wheel on Butte Creek.
91
Comment
CAS-BOT-BC110206
Carex buxbaumii
H. L. Mason
1938-7-11
11942
Tuolumne
Yosemite National Park. South island in Swamp Lake, west of Hetch Hetchy.
1584
Comment
UC1102955
Carex buxbaumii
Herbert L. Mason
1958-8-9
14897
Tuolumne
w side of Hetch Hetchy Dam (meadow at Swamp Lake); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC599133
Carex buxbaumii
H. L. Mason
1938-7-9
11890
Tuolumne
w Hetch Hetchy; Yosemite National Park, Swamp Lake
1584
Comment
YM-YOSE65387
Carex buxbaumii
H. L. Mason
1938-7-9
11890
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND
1584
Comment
YM-YOSE65389
Carex buxbaumii
H. L. Mason
1938-7-11
11942
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND
Comment
UC1100425
Carex californica
Herbert L. Mason
1932-8-26
7152
Mendocino
Mendocino City, Pine Barrens
Comment
GH424010
Carex capillaris
H. L. Mason
1938-7-13
11946
Unknown
base of El Capitan, Yosemite Valley
1226
Comment
CAS-BOT-BC34365
Carex congdonii
H. L. Mason
1938-7-28
12046
Tuolumne
Yosemite National Park. Macomb Ridge, east of Tilden Lake.
3048
Comment
UC599129
Carex congdonii
H. L. Mason
1938-7-28
12046
Tuolumne
e Tilden Lake; Yosemite National Park, Macomb Ridge
3048
Comment
RSA23336
Carex cusickii
H. L. Mason
1938-7-10
11923
Tuolumne
South island in Swamp Lake, west of Hetch Hetchy,
1585
Comment
UC965593
Carex cusickii
Herbert L. Mason
1952-7-19
14416
Nevada
meadow opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
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
CAS-BOT-BC19875
Carex echinata subsp. echinata
H. L. Mason
1938-7-10
11922
Tuolumne
Yosemite National Park. South Island in Swamp Lake, west of Hetch Hetchy.
1584
Comment
UCD140298
Carex echinata subsp. phyllomanica
Herbert L. Mason
1946-5-18
12760
Mendocino
east of Fort Bragg.
Comment
UC1100513
Carex feta
Herbert L. Mason
1937-7-21
11561
Tuolumne
just nw Hetch Hetchy; Yosemite National Park, Miguel Meadow
1524
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
UC599115
Carex filifolia var. erostrata
H. L. Mason
1938-7-7
11875
Tuolumne
ridge e Swamp Lake (between Swamp Lake and Hetch Hetchy); Yosemite National Park
1676
Comment
UC1100438
Carex harfordii
Herbert L. Mason
1946-7-24
12936
Marin
Third lake (at Double Point) S of Bear Valley on road to Lake Ranch
Comment
UC599128
Carex heteroneura
H. L. Mason
1938-7-28
12042
Tuolumne
Yosemite National Park. Macomb Ridge east of Tilden Lake.
Comment
CAS-BOT-BC22056
Carex heteroneura
H. L. Mason
1938-7-30
12056
Tuolumne
Yosemite National Park. South end of Tiltill Moutain.
2590
Comment
CAS-BOT-BC31516
Carex limosa
H. L. Mason; L. Reinecke
1937-7-22
11586
Tuolumne
Swamp Lakes, just S of Miguel Meadows, W of Hetch Hetchy. Yosemite National Park.
1584
Comment
YM-YOSE65466
Carex luzulifolia
H. L. Mason
1938-7-28
12041
Tuolumne
MACOMB RIDGE EAST OF TILDEN LAKE
3048
Comment
CAS-BOT-BC31853
Carex microptera
Herbert L. Mason
1952-7-19
14421
Nevada
Meadow opposite UC Trout Laboratory, Sage Hen Creek.
1981
Comment
CAS-BOT-BC119824
Carex nebrascensis
Herbert L. Mason
1952-7-16
14348
Nevada
One mi W of Univ of CA Trout Laboratory. Sage Hen Creek.
1981
Comment
YM-YOSE65510
Carex ormantha
H. L. Mason
1938-7-10
11922
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND. SWAMP LAKE
Comment
UC1100510
Carex pellita
Herbert L. Mason, Verne Grant
1947-7-12
13423
Modoc
s Alturas (irrigation ditch near s end of west side road, along railroad tracks); Pit River Valley
Comment
UC1100475
Carex praegracilis
Herbert L. Mason, Verne Grant
1947-7-12
13439
Modoc
n Likely; Corporation Ranch Headquarters
Comment
CAS-BOT-BC118800
Carex preslii
H. L. Mason
1938-7-28
12043
Tuolumne
Macomb Ridge E of Tilden Lake.
3048
Comment
UC599131
Carex raynoldsii
H. L. Mason
1938-7-26
12021
Tuolumne
Meadows Jack Main; Yosemite National Park, Andrew Peak
2438
Comment
CAS-BOT-BC116945
Carex subbracteata
H. L. Mason
1921-5-14
s.n.
Alameda
Hayward
Comment
UC965625
Carex utriculata
Herbert L. Mason
1952-7-19
14415
Nevada
meadow opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC965615
Carex vernacula
Herbert L. Mason
1952-7-11
14324
Nevada
bog at head of meadow 1 mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
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
UC1178874
Castilleja affinis subsp. neglecta
Herbert L. Mason
1940-5-20
12286
Marin
back of Tiburon
Comment
UC1081504
Castilleja angustifolia
H. L. Mason
1926-4-28
3087
San Bernardino
Box S Ranch
Comment
UC673457
Castilleja exserta
H. L. Mason
1940-3-23
5087
Tulare
3 mi above Springville; Middle Tule River
Comment
UC673435
Castilleja exserta subsp. exserta
Herbert L. Mason
1926-4-25
2935
Orange
5 mi s Laguna
Comment
UC673440
Castilleja exserta subsp. exserta
H. L. Mason
1929-3-15
5059
Contra Costa
about 5 mi from Brentwood (along Marsh Creek Road)
Comment
UC1081509
Castilleja foliolosa
H. L. Mason
1928-3-4
4169
Contra Costa
Shell Ridge
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
UC673469
Castilleja lacera
H. L. Mason
1931-5-9
5871
Siskiyou
3 mi w Weed
Comment
JEPS45660
Castilleja linariifolia
H. L. Mason
1953-7-21
14563
Mono
just e Campito Mountain (near road to Naval Physiological Research Station, near White Mountain Peak); White Mountains
3352
Comment
UC1191866
Castilleja minor subsp. minor
Herbert L. Mason
1948-9-4
13651
Mono
Rush Creek; Mono Lake
Comment
UC1039786
Castilleja nana
H. L. Mason
1923-8-2
705
Tuolumne
headwaters of the Unicorn Creek Sierra Nevada, Yosemite National Park, Tuolumne River (a tributary of the Tuolumne River, low ridge w of lakes)
Comment
JEPS19684
Castilleja nana
Herbert L. Mason
1938-7-22
11980
Mariposa
3 mi n and above Hetch Hetchy Valley (on the slopes of The Beehive); The Beehive
2133
Comment
JEPS3603
Castilleja pilosa
Herbert L. Mason
1953-6-16
14550
Sierra
at junction of the Beckwourth to Sierraville road with the Calpine road; Sierra Valley
Comment
UC545817
Caulanthus californicus
Herbert L. Mason
1935-5-2
10001
Kern
one mi e Lost Hills (nw Kern County); e of Lost Hills
Comment
SD47959
Caulanthus cooperi
Herbert L. Mason
1940-3-22
12233
Inyo
Titus Canyon, Grapevine Mountains, Death Valley National Monument.
Comment
UC592143
Caulanthus coulteri
H. L. Mason
1929-3-24
5112
Madera
junction of Yosemite Road eighteen mi e Madera; e of Madera
Comment
UC634561
Ceanothus confusus
H. L. Mason
1934-4-28
8072
Sonoma
Jensen's Ranch, at head of Dohrmans Creek
Comment
CAS-BOT-BC48677
Ceanothus cordulatus
Herbert L. Mason
1925-8-11
2211
Tuolumne
Big oak Flat road near Tuolumne Grove
Comment
UC634801
Ceanothus crassifolius
Herbert L. Mason
1923-6-16
434
Santa Barbara
La Combre Peak
Comment
UC635526
Ceanothus foliosus
Herbert L. Mason
1925-4-12
1329
Marin
Pipeline Trail Mt. Tamalpais
Comment
UC912395
Ceanothus foliosus
Herbert L. Mason
1929-4-29
5231
Lake
just e of Hopland Mayacama Range
Comment Read comments Jul 28 2015
UC634803
Ceanothus griseus
Herbert L. Mason
Jun 1923
555
Monterey
Point Lobos
Comment
UC634812
Ceanothus griseus
H. L. Mason
1929-3-2
5023
Monterey
20 mi s of Carmel Big Sur Rd.
Comment
CAS-BOT-BC51002
Ceanothus integerrimus
Herbert L. Mason
1923-7-9
575
Tuolumne
Mather
Comment
GH349712
Ceanothus lemmonii
H. L. Mason
1926-5-29
3284
Unknown
Rattlesnake Creek five miles south of Grass Valley
609
Comment
UC634625
Ceanothus lemmonii
H. L. Mason
1926-5-29
3285
Placer
near Alta (Donner Pass)
Comment
UC634987
Ceanothus lemmonii
H. L. Mason
1927-5-19
3714
Butte
ne Oroville (Cherokee Mine.); Table Mt.
Comment
CAS-BOT-BC51286
Ceanothus leucodermis
Herbert L. Mason
1926-4-30
3113
Riverside
Temecula Canyon, 1 mile South of Temecula, Southwestern Riverside Co.
Comment
UC634615
Ceanothus leucodermis
H. L. Mason
1926-4-11
2856
Alameda
Rancho Repose, Mount Hamilton Range.
Comment
UC634619
Ceanothus leucodermis
Herbert L. Mason
1926-6-21
530
San Luis Obispo
a few mi above on hwy San Luis Obispo (Camp Fremont)
Comment
UC634563
Ceanothus megacarpus var. megacarpus
Herbert L. Mason
1923-6-16
441
Santa Barbara
La Combre Peak Santa Barbara
Comment
GH349974
Ceanothus palmeri
H. L. Mason
1928-5-3
4488
Unknown
near bridge of Cosumnes River at mouth of Clark Creek
Comment
CAS-BOT-BC51902
Ceanothus parvifolius
Herbert L. Mason
1925-5-31
3343
Calaveras
1 mile West of Calaveras Grove
Comment
UC912386
Ceanothus parvifolius
Herbert L. Mason
1928-5-4
4518
El Dorado
Rose Springs, Eggars.
Comment
CAS-BOT-BC53131
Ceanothus perplexans
Herbert L. Mason; Peirson; Munz
1926-4-30
3173
San Diego
Palomar Mt.
Comment
UC634575
Ceanothus thyrsiflorus
Herbert L. Mason
1926-2-21
2651
Marin
Inverness
Comment
UC634810
Ceanothus tomentosus
H. L. Mason
1928-5-3
4467
Amador
hills one mi s Ione; s of Ione
Comment
GH425422
Ceanothus tomentosus
H. L. Mason
1932-4-24
6986
Unknown
3 miles south of Ione
Comment
UC634853
Ceanothus velutinus
Herbert L. Mason
1926-3-6
2699
Marin
Corte Madera Ridge , Corte Madera Ridge (Mt. Tamalpais)
Comment
RSA23385
Ceanothus velutinus subsp. velutinus
H. L. Mason
1939-8-3
12200
Placer
Squaw Valley 7 miles NW of Tahoe City.
1890
Comment
UC1100196
Cenchrus longispinus
Herbert L. Mason and S. Galen Smith
1948-7-30
8259
Stanislaus
on Crow's Landing raod about 7 mi s Modesto
Comment
UC566946
Centaurium exaltatum
H. L. Mason
1928-10-2
4978
Monterey
1 mi below Salinas; Salinas River
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
UC912272
Centromadia pungens subsp. pungens
H. L. Mason
1929-9-21
5438
Contra Costa
Marsh Creek Road
Comment
UC1039525
Cephalanthus occidentalis var. californicus
H. L. Mason
1929-9-21
5447
Contra Costa
1 mi from Borden Highway junction with road to Antioch
Comment
UC936210
Cerastium beeringianum var. capillare
H. L. Mason
1936-7-28
11428
Mono
Mt. Dana Plateau
Comment
UC635509
Ceratophyllum demersum
H. L. Mason
1928-10-2
4984
Monterey
Salinas River one mi below Salinas; Salinas River
Comment
UC1101322
Ceratophyllum demersum
Herbert L. Mason and Verne Grant
1946-8-8
12994
Butte
Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough
Comment
UCD137763
Ceratophyllum demersum
Herbert L. Mason; Verne Grant
1946-8-8
12994
Butte
Butte Sink. Sanford Slough on Tule Gun Club.
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
UC555653
Cercocarpus betuloides var. betuloides
H. L. Mason
1928-10-31
3645
Alameda
se side of Cedar Mountain
Comment
UC1081549
Chaenactis alpigena
Herbert L. Mason
1936-7-6
11141
Mariposa
w of Yosemite Creek (Hetch Hetchy Trail); Sierra Nevada, Yosemite National Park
2286
Comment
UC566687
Chaenactis fremontii
H. L. Mason
1928-3-11
4328
Riverside
near Indio
Comment
UC565627
Chaenactis glabriuscula var. glabriuscula
H. L. Mason
1931-4-5
5817
Contra Costa
Antioch sandhills Antioch
Comment
CAS-BOT-BC284560
Chaenactis glabriuscula var. heterocarpha
H. L. Mason
1929-4-29
5246
Lake
Two and nine-tenths miles west of Lakeport
Comment
GH414782
Chaenactis glabriuscula var. orcuttiana
H. L. Mason
1926-4-25
2914
Unknown
Five miles south of Laguna
Comment Read comments Feb 3 2015
UC565566
Chaenactis glabriuscula var. orcuttiana
H. L. Mason
1926-4-25
2914
Orange
5 mi s Laguna
Comment Read comments Feb 3 2015
UC565572
Chaenactis stevioides
H. L. Mason
1926-4-27
3051
San Bernardino
30 mi w of Victorville; Mojave Desert
Comment
UC570790
Chamaesyce maculata
H. L. Mason
1929-10-4
5451
Placer
1.5 mi above Auburn
Comment
RSA312310
Chamaesyce serpillifolia
H. L. Mason, Verne Grant, C. T. Mason
1947-7-10
13325
Modoc
Dorris Reservoir, 2 miles east of Alturas.
Comment
UC570792
Chamaesyce serpillifolia subsp. hirtula
H. L. Mason
1930-10-25
5789
Monterey
between Jolon and Santa Lucia Rnger Staion (along the San Antonio River); foothills of the Santa Lucia Mtns
Comment
UC672640
Cheilanthes clevelandii
Herbert L. Mason
1926-5-1
3168
San Diego
Palomar Mt
Comment
UC1076335
Cheilanthes gracillima
Herbert L. Mason
1925-2-1
1221
Marin
Mt Tamalpais
Comment
UC1076539
Cheilanthes gracillima
Herbert L. Mason
1938-7-25
11986
Tuolumne
n side of Jack Main Canyon (slopes of Mahan Peak); Sierra Nevada, Yosemite Nat'l Park, Jack Main Canyon
2438
Comment
UC1191185
Cheilanthes gracillima
Herbert L. Mason
Tuolumne
Jack Main Canyon; Sierra Nevada, Yosemite Nat'l Park
2286
Comment
UC965591
Chenopodium atrovirens
Herbert L. Mason
1952-7-16
14370
Nevada
1 mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC1191323
Chenopodium chenopodioides
Herbert L. Mason
1947-8-15
13555
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
POM312489
Chenopodium macrospermum var. farinosum
H. L. Mason
1946-6-9
12865
San Luis Obispo
Dune Lakes, between Oceano and mouth of Santa Maria River.
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
SEINET5765059
Chenopodium pumilio
Herbert L. Mason
1933-1
7286
Amador
Silver Lake, Sierra Nevada [Alpine County err.]
Comment
UC1191348
Chenopodium pumilio
Herbert L. Mason and S. Galen Smith
1948-7-29
8250
Merced
salt slough at end Turner Island Road (e of Las Banos)
Comment
UC1191335
Chenopodium strictum var. glaucophyllum
Herbert L. Mason and Verne Grant
1946-8-7
12978
Colusa
8 mi n Colusa; Butte Sink
Comment
UC635149
Chimaphila umbellata
H. L. Mason
1924-6-18
1054
Plumas
rd. between Graeagle and Gold Lake
Comment
SACT000741
Chloris virgata
Herbert Mason, S. Smith
1948-7-27
Merced
Moist ground by ditch. Just south of Newman.
Comment
CAS-BOT-BC191212
Chorizanthe douglasii
Herbert L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte Carmel River
Comment
CAS-BOT-BC191220
Chorizanthe douglasii
H. L. Mason
1923-6-23
542
Monterey
Carmel River, ten miles above Carmel
Comment
JEPS19625
Chorizanthe obovata
Herbert L. Mason
1946-6-7
12822
Santa Barbara
0.5 mi w Camuesa (Mono Flat); Mono Flat
Comment
UC635058
Chorizanthe obovata
H. L. Mason
1923-6-22
532
San Luis Obispo
just above San Luis Obispo (Camp Fremont); above San Luis Obispo, Camp Fremont
Comment
CAS-BOT-BC257398
Chorizanthe pungens var. pungens
H. L. Mason
1923-6-23
565
Monterey
Del Monte
Comment
UC635055
Chorizanthe staticoides
Herbert L. Mason
1923-6-16
443
Santa Barbara
along trail to La Cumbre Peaks; trail to La Cumbre Peaks
Comment
UC635059
Chorizanthe staticoides
Herbert L. Mason
1926-4-25
2913
Orange
5 mi below Laguna; below Laguna
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
UC635281
Chylismia claviformis subsp. aurantiaca
H. L. Mason
1928-3-10
4182
Riverside
Whitewater River
Comment
UC635283
Chylismia claviformis subsp. claviformis
H. L. Mason
1926-4-27
3038
Los Angeles
Rock Creek
Comment
UC912498
Cirsium andersonii
Herbert L. Mason
1923-8-22
761
Tuolumne
Lyell Fork
Comment
UC912553
Cirsium douglasii var. douglasii
Herbert L. Mason
1932-7-21
7107
Humboldt
on road from Arcata to Weaverville (e slope of South Fork Mountains); North Coast Ranges
Comment
CAS-BOT-BC286356
Cirsium scariosum
Herbert L. Mason
1952-7-11
14334
Nevada
Sierra Nevada. One mile west of University of California Trout Laboratory. Sage Hen [Sagehen] Creek
1981
Comment
SEINET7836837
Cirsium scariosum
H. L. Mason
1952-7-11
14334
Nevada
Sage Hen Creek, one mile west of University of California Trout Laboratory
1981
Comment
UC965579
Cirsium scariosum var. americanum
Herbert L. Mason
1952-7-11
14334
Nevada
one mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
CAS-BOT-BC169777
Cistanthe quadripetala
Herbert L. Mason
1936-4-26
11097 a
Lake
Bartlett Springs, 16 miles NE of Clear Lake
792
Comment
GH376996
Cistanthe quadripetala
H. L. Mason
1936-4-26
11097 a
Unknown
Bartlett Springs, sixteen miles northeast of Clear Lake
792
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
CAS-BOT-BC163624
Clarkia biloba subsp. biloba
H. L. Mason
1925-6-27
2123
Tuolumne
Hog Ranch, near Mather
Comment
POM256502
Clarkia bottae
H. L. Mason, Edward Lee
1935-6-15
9339
Monterey
Point Lobos State Park.
Comment
POM257280
Clarkia breweri
H. L. Mason
1928-5-6
4557
Alameda
Cedar Mountain, Mount Hamilton Range.
Comment
CAS-BOT-BC164286
Clarkia cylindrica subsp. cylindrica
H. L. Mason
1929-6-2
5356
Kern
Coloring fields on northeast slopes of Tehachapi Mountains, Tejon Pass, thirty miles from Bakersfield
Comment
UC634706
Clarkia davyi
H. L. Mason
June 1930
5615
Mendocino
Cloverdale to Fort Bragg; Navarro River
Comment
RSA125763
Clarkia heterandra
H. L. Mason
1938-5-10
11813
Tulare
Near Auckland
Comment
CAS-BOT-BC165008
Clarkia rhomboidea
H. L. Mason
1926-7-4
2150
Tuolumne
Mather
Comment
SEINET10492526
Clarkia rhomboidea
Herbert L. Mason
1925-7-4
Mason 2150
Tuolumne
Mather, California
Comment
CAS-BOT-BC165171
Clarkia rubicunda
H. L. Mason
1921-7-14
s.n.
San Mateo
La Honda - Pescadero Road near Pescadero Creek
Comment
UC634691
Clarkia speciosa subsp. polyantha
H. L. Mason
1929-6-2
5355
Kern
30 mi from Bakersfield; Tehachapi Mountains, Tejon Pass
Comment
CAS-BOT-BC165545
Clarkia unguiculata
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
POM257253
Clarkia williamsonii
H. L. Mason
1925-7-4
2149
Tuolumne
Mather.
Comment
UC1076046
Claytonia lanceolata
Herbert L. Mason
1947-5-17
14775
Unknown
summit of Scott Mountain Scott Mountain (Trinity-Siskiyou county line)
Comment
UC561009
Claytonia nevadensis
H. L. Mason
1936-7-31
11462
Mono
e of Saddlebag Lake (Tioga Crest); Sierra Nevada, Tioga Crest
3474
Comment
UC635331
Claytonia nevadensis
H. L. Mason
1923-9-15
786
Tuolumne
Tioga mines; Sierra Nevada Mountains, Yosemite National Park
Comment
UC635328
Claytonia parviflora subsp. parviflora
H. L. Mason
1925-7-27
2177
Tuolumne
Hog Ranch, Mather; Mather
Comment
UC1111600
Claytonia parviflora subsp. parviflora
Herbert L. Mason
1936-3-21
11028
Mariposa
3 mi n Coulterville
Comment
CAS-BOT-BC439818
Claytonia perfoliata
H. L. Mason
1925-7-27
2177
Tuolumne
Hog Ranch, Mather
Comment
UC1111598
Claytonia rubra subsp. rubra
Herbert L. Mason
1936-4-26
11097
Lake
1.5 mi e Bartlett Springs
Comment
POM270596
Clematis ligusticifolia
H. L. Mason
1927-7-31
4008
Santa Cruz
Mt. Herman, Santa Cruz Mts.
Comment
UC1275784
Cleome sparsifolia
Herbert L. Mason
1963-7-4
15222
Mono
near Artesian Well (Sulphur Springs, ne shore of Mono Lake); Mono Lake, Sulphur Springs
Comment
UC555323
Coleogyne ramosissima
H. L. Mason
1926-4-28
3082
San Bernardino
Box S Spring
Comment
UC672485
Collinsia bartsiifolia var. bartsiifolia
H. L. Mason
1929-4-29
5238
Lake
2.9 mi w Lakeport (on road to Hopland)
Comment
POM224206
Collinsia callosa
H. L. Mason
1935-4-29
s.n.
Kern
Two mile west of Walker Pass.
Comment
SBBG27279
Collinsia callosa
H. L. Mason
1935-4-29
10002
Kern
2 mi W of Walker Pass
Comment
UC1178860
Collinsia corymbosa
Herbert L. Mason
1940-5-22
12299
Mendocino
near Fort Bragg (headland n of Pudding Creek Slough)
Comment
UC632787
Collinsia greenei
H. L. Mason
1936-4-26
11094
Lake
e side Bartlett Mtn; Inner North Coast Ranges
Comment
UC1178872
Collinsia heterophylla
Herbert L. Mason
1940-5-20
12288
Marin
outcrop back of Tiburon
Comment
UC672474
Collinsia heterophylla
H. L. Mason
1929-4-7
5182
Stanislaus
about 10 mi e of Oakdale (Sierra Nevada Foothills); Sierra Nevada Foothills
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
UC672451
Collinsia parryi
H. L. Mason
1927-6-11
3751
Los Angeles
San Gabriel Mountains, Mount Wilson Mount Wilson; San Gabriel Mountains, Mount Wilson
1219
Comment
UC672477
Collinsia sparsiflora var. arvensis
H. L. Mason
1928-4-8
4298
Sonoma
fields near Sebastopol
Comment
UC672470
Collinsia sparsiflora var. collina
Herbert L. Mason
1929-3-15
5051
Contra Costa
Nortonville
Comment
UC632827
Collinsia sparsiflora var. collina
Herbert L. Mason
1936-3-21
11026
Mariposa
3 mi n Coulterville
Comment
POM247279
Collinsia torreyi
H. L. Mason
1936-7-15
11258
Mariposa
Tamarack Flat, old Big Oak Flat Road. Yosemite National Park.
1921
Comment
UC1540455
Collinsia torreyi var. torreyi
Herbert L. Mason
1936-7-15
11258
Mariposa
Yosemite National Park, Tamarack Flat, old Big Oak Flat Road Tamarack Flat; Yosemite National Park, Tamarack Flat
1920
Comment
UC588122
Collinsia torreyi var. torreyi
Herbert L. Mason
1936-7-15
11258
Mariposa
Yosemite National Park, Tamarack Flat, old Big Oak Flat Road Tamarack Flat; Yosemite National Park, Tamarack Flat
1920
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
UC907801
Collomia grandiflora
Herbert L. Mason
1946-6-8
12848
Santa Barbara
Bluff Camp Big Pine Mountain
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
SBBG29129
Collomia rawsoniana
H. L. Mason
1938-7-16
11954
Madera
Cascadel Ranch on a tributary to Whisky Crk, 3 mi E of S Fk
1127
Comment
UC1191641
Collomia tinctoria
Herbert L. Mason
1948-7-17
13596
Siskiyou
hills near Grass Lake
Comment
UCD118258
Collomia tinctoria
Herbert L. Mason
1948-7-18
13606 b
Siskiyou
Grass Lake.
Comment
UC971919
Collomia tracyi
Herbert L. Mason
1950-7-15
14043
Siskiyou
stream wash Scott Valley, Scott Creek
Comment
SBBG72464
Comarum palustre
H. L. Mason
1940-7-25
12331
El Dorado
Grass lake, Luther Pass
2377
Comment
UC1051489
Convolvulus simulans
Herbert L. Mason
1952-4-27
14282
San Benito
San Carlos Canyon
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
UC1191875
Cordylanthus mollis subsp. hispidus
Herbert L. Mason and S. Galen Smith
1948-8-9
8306
Merced
2 mi n Dos Palos (along old Santa Fe grade)
Comment
UC672489
Cordylanthus rigidus subsp. littoralis
H. L. Mason
September, 1930
5908
Monterey
between Monterey and Castroville (upper end of slough); Elkhorn Slough
Comment
JEPS16345
Cordylanthus tenuis subsp. capillaris
H. L. Mason
1946-7-4
12900
Sonoma
2 mi e Occidental; ; E of Occidental, Sonoma Co.
Comment
UC964790
Cordylanthus tenuis subsp. viscidus
Herbert L. Mason
1950-7-16
14064
Siskiyou
5 mi s summit of road from Happy Camp CA to Waldo OR
Comment
CAS-BOT-BC287722
Coreopsis bigelovii
Herbert L. Mason
1932-4-1
6882
Kern
5 miles S of Muroc, Mojave Desert
Comment
UC566775
Coreopsis californica var. californica
Herbert L. Mason
1926-4-26
3003
Los Angeles
Little Rock
Comment
UCD131019
Coreopsis stillmanii
Herbert L. Mason
1936-3-21
11019
Tuolumne
4 miles north of Coulterville.
Comment
UC1093911
Corethrogyne filaginifolia
Herbert L. Mason
1936-9-13
11529
Santa Clara
w Madrone Station
Comment
UC672298
Corethrogyne filaginifolia
H. L. Mason
1926-5-26
3252
Alameda
Niles Canyon
Comment
UC672299
Corethrogyne filaginifolia
H. L. Mason
1928-4-25
4365
San Francisco
Hunter's Point
Comment
UC672301
Corethrogyne filaginifolia
H. L. Mason
1927-9-24
4092
Santa Barbara
slopes about West Ranch; Santa Cruz Island
Comment
UC672303
Corethrogyne filaginifolia
Herbert L. Mason
1927-7-31
4000
Santa Cruz
Mt. Herman Santa Cruz Mountains
Comment
UC912321
Corethrogyne filaginifolia
Herbert L. Mason
1927-10-4
4129
Santa Cruz
mouth Waddell Creek; Ano Nuevo Point
Comment Read comments Jun 27 2008
UC634827
Cornus glabrata
H. L. Mason
1929-10-12
5486
San Luis Obispo
4.3 mi. w. Atascadero (along Atascadero Creek)
Comment
RSA44062
Cornus nuttallii
H. L. Mason
1926-3-21
2781
Lake
Near summit of road from Middletown to Mount St. Helena.
Comment
UC1192136
Cotula coronopifolia
Herbert L. Mason and Verne Grant
1947-6-26
13241
Solano
Cordelia Slough; Suisun Marsh
Comment
UC912224
Cotula coronopifolia
Herbert L. Mason
1927-4-24
3707
San Mateo
mouth of San Gregorio Creek
Comment
UC571143
Crassula connata var. subsimplex
H. L. Mason
1926-3-6
2693
Marin
Corte Madera Ridge
Comment
UC565498
Crepis capillaris
H. L. Mason
1929-8-24
5398
Mendocino
Pudding Creek Slough Fort Bragg (in bogs)
Comment
UC1191647
Cressa truxillensis
Herbert L. Mason
1947-8-15
13541
Modoc
e. side Goose Lake (mouth of Crane Creek on Willow Ranch); Willow Ranch, Crane Creek, Goose Lake
Comment
UC635026
Cressa truxillensis
H. L. Mason
1928-9-2
4943
Alameda
Bay Farm Island
Comment
UC632866
Crocanthemum scoparium var. scoparium
H. L. Mason
1938-5-7
11775
Santa Barbara
Burton Mesa
Comment
UC1093933
Crocanthemum scoparium var. vulgare
Herbert L. Mason
1935-5-30
8324
Lake
hills w Mirabel Mine
Comment
UC634906
Crocanthemum scoparium var. vulgare
Herbert L. Mason
1925-10-25
2247
Santa Cruz
Pine Mt. trail Big Basin
Comment
UC566631
Crocidium multicaule
H. L. Mason
1929-4-29
5243
Lake
about 3 mi w Lakeport (on Hopland road)
Comment
POM313218
Crypsis schoenoides
H. L. Mason
1945-9-19
12729
Butte
Gray Lodge Game Refuge, northwest of Pennington
Comment
GH424701
Cryptantha circumscissa
H. L. Mason
1932-4-1
6868
Unknown
One mile east of Lancaster, Mojave Desert
Comment
UC573097
Cryptantha flaccida
H. L. Mason
1926-4-10
2804
Alameda
near Cedar Mountain; Mount Hamilton Range, Arroyo Mocho
Comment
GH420039
Cryptantha holoptera
H. L. Mason
1928-3-10
4232
Unknown
Hidden Springs Canyon, Coachella Mts.
Comment
UC573134
Cryptantha micrantha
Herbert L. Mason
1932-4-1
6867
Los Angeles
1 mi e Lancaster; Mojave Desert
Comment
UC1039609
Cryptogramma acrostichoides
Herbert L. Mason
Jul 7 1939-Jul 8 1939
12149
Nevada
3 mi w Donner Summit; Sierra Nevada
2072
Comment
UC1093684
Cryptogramma acrostichoides
Herbert L. Mason
1926-7-12
2894
Plumas
Mt Elwell
Comment
UC1076279
Cupressus goveniana subsp. pygmaea
Herbert L. Mason
1928-10-21
5009
Mendocino
no of Fort Bragg; Pudding Creek
Comment
UC1179014
Cupressus goveniana subsp. pygmaea
Herbert L. Mason
1928-10-21
5001
Mendocino
Fort Bragg
Comment
NY16757
Cupressus macrocarpa
H. L. Mason
1934-10-21
10023
Monterey
Point Lobos
Comment
UC1076285
Cupressus macrocarpa
H. L. Mason
1923-6-23
559
Monterey
Cypress Point
Comment
CAS-BOT-BC85504
Cupressus sargentii
Herbert Louis Mason
1926-4-16
s.n.
Alameda
Type locality: Cedar Mountain. Near the summit growing in volcanic rock
Comment
UC179019
Cupressus sargentii
Herbert L. Mason
1926-10-31
3644
Alameda
Cedar Mountain
Comment
UC567067
Cupressus sargentii
Mason
1932-7-19
123
Sonoma
3/5 mi nw Los Alamos School; Santa Rosa Quadrangle
571
Comment
UC1191664
Cuscuta californica
Herbert L. Mason and Verne Grant
1946-9-27
13132
Butte
Graylodge Game Refuge Butte Sink
Comment
UC635237
Cuscuta subinclusa
H. L. Mason
1930-10-25
5766
Monterey
San Antonio River Santa Lucia Mountains
Comment
CAS-BOT-BC114782
Cyperus acuminatus
Herbert L. Mason; Verne Grant
1946-8-6
12969
Colusa
Pond 2.7 miles N of Colusa between Sacramento River and Butte Creek.
Comment
SEINET200026
Cyperus aristatus
Herbert L. Mason
1946-7-27
12949
Lake
Clear Lake 2-3 miles N of Lakeport.
Comment
CAS-BOT-BC114686
Cyperus bipartitus
Herbert L. Mason
1946-7-4
12884
Sonoma
Pitkin Marsh, between Santa Rosa and Forestville.
Comment
UC1100545
Cyperus difformis
Herbert L. Mason
1945-9-18
12705
Sutter
Sutter By-pass near bridge on Yuba City - Knight's Landing Hwy.
Comment
POM313105
Cyperus difformis
H. L. Mason, S. Galen Smith
1948-8-17
8341
Fresno
King s River east of Burrel, San Joaquin Valley
Comment
CAS-BOT-BC114448
Cyperus eragrostis
Herbert L. Mason; Verne Grant
1946-8-21
13056
San Joaquin
Between Banta and Stockton
Comment
UC1100530
Cyperus eragrostis
Herbert L. Mason and Verne Grant
1946-8-28
13083
San Mateo
at entrance to county prison San Francisco
Comment
UC1100531
Cyperus eragrostis
Herbert L. Mason and Verne Grant
1946-8-21
13056
San Joaquin
between Banta and Stockton
Comment
UC1100533
Cyperus eragrostis
Herbert L. Mason and Verne Grant
1946-8-15
13049
Butte
near caretaker's house Greylodge Game Refuge (#833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge
Comment
UC1100538
Cyperus eragrostis
Herbert L. Mason and Verne Grant
1945-7-10
12634
Butte
n. of Marysville (marshes along Butte Creek, Butte Sink); Butte Sink, Grey Lodge Game Refuge
Comment
UC1100537
Cyperus eragrostis
Herbert L. Mason
1945-8-17
12663
Solano
n. Rio Vista
Comment
UC1099935
Cyperus erythrorhizos
Herbert L. Mason and Verne Grant
1946-9-5
13115
Colusa
1.6 mi. w. Williams (rd. to Lake Co.)
Comment
UC1100413
Cyperus erythrorhizos
Herbert L. Mason and Verne Grant
1946-8-14
13036
Butte
canal near big pond by Sacramento Outing Club; Butte Sink
Comment
UC1100518
Cyperus erythrorhizos
Herbert L. Mason
1945-9-19
12738
Butte
Gray Lodge Game Refuge n.w. Pennington; Gray Lodge Game Refuge
Comment
UC1100667
Cyperus erythrorhizos
Herbert L. Mason and S. Galen Smith
1948-8-18
8350
Kings
canal just w. Stratford; San Joaquin Valley
Comment
UC1100668
Cyperus erythrorhizos
Herbert L. Mason and S. Galen Smith
1948-8-10
8315
Merced
Mendota Pool at entrance of Firebaugh canal (w. side); San Joaquin Valley
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
UC1100674
Cyperus erythrorhizos
Herbert L. Mason and S. Galen Smith
1948-8-24
458
Kern
flats ca. 2 mi. s. Karmin (ca. 3 mi. n. of Tupman); San Joaquin Valley, Elk Hills base, Kern R.
Comment
CAS-BOT-BC114270
Cyperus esculentus
Herbert L. Mason; Stanley Galen [S. Galen] Smith
1948-7-28
8228
Fresno
San Joaquin River at Firebaugh.
Comment
UC1100644
Cyperus niger
Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith
1949-7-14
981
Fresno
ca. 1 mi. s.e. Sanger (marsh n. of Kings River, on rd. to Sanger Beach)
Comment
UC1100636
Cyperus rotundus
Herbert L. Mason and S. Galen Smith
1948-8-18
8349
Kings
just w. of Stratford; San Joaquin Valley
Comment
UC1100552
Cyperus squarrosus
Herbert L. Mason and S. Galen Smith
1948-8-17
8342
Fresno
King's R. e. of Burrel; San Joaquin Valley, King's R.
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
UC673566
Cypripedium montanum
H. L. Mason
1925-8-11
2214
Tuolumne
Bif Oak Flat road to Tuolumne Grove (along stream)
Comment
CAS-BOT-BC435170
Cypselea humifusa
Herbert L. Mason
1945-8-24
12684
Lake
East shore, Lower Lake
Comment
UCD96982
Cypselea humifusa
Herbert L. Mason
1945-8-24
12684
Lake
East shore, Lower Lake.
Comment
UC641978
Cystopteris fragilis
H. L. Mason
1936-7-29
11439
Mono
Conness Cirque near Saddlebag Lake (Tioga Pass region); Sierra Nevada
Comment
UC1051466
Dalea mollissima
Herbert L. Mason
1952-4-9
14238
San Bernardino
s. of Needles; Sawtooth Range
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
UC1100156
Damasonium californicum
Herbert L. Mason
1927-5-9
3705
Butte
15 mi. w. Oroville; Sacramento Valley
Comment
UCD138001
Damasonium californicum
Herbert L. Mason
1946-5-30
12794
Lake
Locomono Creek near Middletown.
Comment
UC634824
Darlingtonia californica
Herbert L. Mason
1926-4-19
2887
Trinity
Comment
UC570854
Darmera peltata
Herbert L. Mason
1923-7-20
626
Tuolumne
near Ackerson Meadows; Middlefork Tuolumne River
Comment
UC912274
Deinandra corymbosa
Herbert L. Mason
1932-4-28
7041
Monterey
Pajaro Hills
Comment
UC691769
Deinandra kelloggii
H. L. Mason
1929-3-29
5137
Contra Costa
2 mi above Clayton (Marsh Creek Road)
Comment
UC1179057
Delphinium
Herbert L. Mason
Jul 7 1939-Jul 8 1939
12147
Nevada
3 mi w Donner Summit
2072
Comment
UC1191432
Delphinium
Herbert L. Mason
1948-7-18
13626
Siskiyou
Grass Lake
Comment
POM270946
Delphinium cardinale
H. L. Mason
1927-6-15
3788
Los Angeles
San Gabriel River.
Comment
UC912677
Delphinium hansenii
H. L. Mason
1926-5-28
3256
El Dorado
Rose Springs Sierra Nevada Mts.
Comment
CAS-BOT-BC10257
Delphinium hansenii
Herbert L. Mason
1938-7-7
11874
Tuolumne
Ridge east of Swamp Lake, between Swamp Lake and Hetch Hetchy
1676
Comment
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
UC635363
Delphinium nudicaule
H. L. Mason
1931-3-13
5814
Alameda
Lake Chabot
Comment
UC965556
Delphinium nuttallianum
Herbert L. Mason
1952-7-11
14331
Nevada
rocky margin of quaking bog at head of meadow 1 mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC912670
Delphinium parishii
Herbert L. Mason
1926-4-27
3052
Los Angeles
30 mi w Victorville
Comment
UC635346
Delphinium patens
H. L. Mason
1928-4-13
4330
Napa
hills between Santa Rosa and Calistoga
Comment
CAS-BOT-BC16799
Delphinium polycladon
Herbert L. Mason; L. W. Reinecke
1937-7-28
14822
Tuolumne
Mary Lake
2895
Comment
CAS-BOT-BC16909
Delphinium pratense
Herbert L. Mason
1936-7-6
11149
Mariposa
Hetch Hetchy Trail west of Yosemite Creek
2377
Comment
UC581135
Delphinium purpusii
H. L. Mason
1934-3-28
8003
Kern
n-facing hillslope Kern River Canyon
Comment
UC770002
Delphinium variegatum subsp. variegatum
Herbert L. Mason
1934-3-25
7949
Sacramento
Keithly Ranch Sacramento Valley, Rio Linda
Comment
UC635446
Dendromecon rigida
Herbert L. Mason
1925-4-12
1339
Marin
Pipe line trail Mt. Tamalpais
Comment
UC1100296
Deschampsia cespitosa subsp. cespitosa
Herbert L. Mason
1946-7-4
12885
Sonoma
between Santa Rosa and Forestville (Pitkin Marsh); Pitkin Marsh
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
UC1083122
Dicentra chrysantha
Herbert L. Mason
1936-5-15
11115
Mariposa
between Coulterville Bagby (summit of road)
Comment
SEINET7293087
Dichanthelium acuminatum subsp. fasciculatum
Herbert L. Mason, S. Galen Smith
1949-1
8372
Merced
San Joaquin river, bridge below Snelling
Comment
UC770000
Dichelostemma capitatum
Herbert L. Mason
1934-3-25
7952
Sacramento
Keithly ranch, Rio Linda Sacramento Valley, Rio Linda
Comment
UC635232
Dichelostemma capitatum
H. L. Mason
1925-1-18
1182
Marin
San Rafael to Forbes
Comment
UC635734
Dichelostemma ida-maia
H. L. Mason
1928-7-20
4909
Humboldt
South Fork Mountain
Comment
POM313166
Digitaria sanguinalis
H. L. Mason
1945-9-19
12722 b
Colusa
Below causway over Butte Sink spillway, east bank of Sacramento River, 1 mile north of Colusa.
Comment
CAS-BOT-BC150304
Diplacus aurantiacus
H. L. Mason
1921-5-14
s.n.
Alameda
[Haywards] Hayward
Comment
CAS-BOT-BC150525
Diplacus linearis
H. L. Mason
1921-5-7
s.n.
Monterey
Carmel River, Rancho Del Monte
Comment
CAS-BOT-BC153937
Diplacus pulchellus
C. T. Mason, Jr.
1954-6-7
1546
Tuolumne
East of Carnegie Institution Camp, Hog Ranch, Mather
1371
Comment
UC672121
Disporum hookeri
Herbert L. Mason
July, 1924
1100
Tuolumne
Mather, Middle Fork of the Tuolumne River Middle Fork Tuolumne River; Mather, Middle Fork Tuolumne River
Comment
CAS-BOT-BC195649
Distichlis spicata
Herbert L. Mason
1948-9-4
13639
Mono
Rush Creek, Mono Lake
Comment
UC673300
Dithyrea californica
Herbert L. Mason
1926-4-27
3065
Los Angeles
30 mi w Victorville; Mohave Desert
Comment
UC1178844
Dodecatheon alpinum
H. L. Mason
1922-7-24
332
Mariposa
Porcupine Flat Sierra Nevada Mountains, Yosemite National Park
Comment
UC1191155
Dodecatheon alpinum
H. L. Mason
1923-7-28
667
Mariposa
Snow Flat Sierra Nevada Mountains, Yosemite National Park
Comment
UC1199852
Dodecatheon alpinum
Herbert L. Mason
1923-8-9
745
Tuolumne
Gaylor Lakes, steam bed below second Lakes
Comment
UC673354
Dodecatheon alpinum
Herbert L. Mason
1923-7-28
655 a
Tuolumne
White Wolf Sierra Nevada Mountains, Yosemite Natl Park, White Wolf (Yosemite National Park)
Comment
UC1039559
Dodecatheon clevelandii subsp. patulum
Herbert L. Mason
1927-3-11
3651
San Francisco
Bernal Heights San Francisco, Bernal Heights
Comment
UC673501
Dodecatheon clevelandii subsp. patulum
Herbert L. Mason
1929-3-15
5056
Contra Costa
summit of hill e Nortonville; e of Nortonville
Comment
UC1039537
Dodecatheon clevelandii subsp. sanctarum
Herbert L. Mason
1929-3-1
5016
Monterey
twenty-five mi up river along the Jamesburg-Arroyo Seco Road along the Jamesburg-Arroyo Seco road
Comment
UC1039589
Dodecatheon hendersonii
Herbert L. Mason
1925-1-23
1206
Napa
Wooden Valley grade
Comment
UC673395
Dodecatheon hendersonii
Herbert L. Mason
1925-2-1
1229
Marin
Lake Lagunitas
Comment
UC673398
Dodecatheon hendersonii
Herbert L. Mason
1925-2-1
1215
Marin
near Mount Tamalpais (above Mill Valley); near Mount Tamalpais, above Mill Valley
Comment
UC673404
Dodecatheon hendersonii
Herbert L. Mason
1929-4-29
5254
Lake
between Kelseyville and Lower Lake; between Kelseyville and Lower Lake
Comment
UC1039584
Dodecatheon hendersonii
Herbert L. Mason
1925-3-23
1303
Alameda
hills near Sunol; hills near Sunol
Comment
UC1178842
Dodecatheon hendersonii
Herbert L. Mason
1926-3-14
2717
Napa
sw slope Mt. St. Helena
Comment
UC673400
Dodecatheon hendersonii
Herbert L. Mason
1925-3-23
1305
Alameda
Sunol; Niles Canyon, Sunol
Comment
UC673402
Dodecatheon hendersonii
Herbert L. Mason
1925-3-7
1283
Alameda
Sunol , Sunol (Niles Canyon)
Comment
UC1014776
Dodecatheon jeffreyi
H. L. Mason
1923-8-1
685
Tuolumne
along trail from Tuolumne Meadows to Elizabeth Lake (Yosemite National Park); Sierra Nevada Mountains, Yosemite National Park
Comment
CAS-BOT-BC129998
Dodecatheon subalpinum
H. L. Mason
1928-7-3
4867
Mariposa
Yosemite Creek drainage, Tioga Road, head of Yosemite Creek grade, 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
SEINET190352
Dodecatheon subalpinum
H. L. Mason
1928-7-3
4867
Mariposa
Yosemite National Park; Yosemite Creek drainage, Tioga Road, head of Yosmite Creek grade.
Comment
UC1039533
Dodecatheon subalpinum
Herbert L. Mason
1923-7-28
657
Tuolumne
Tioga Road between Yosemite Creek bridge and Porcupine Flat; Yosemite National Park, btw Yosemite Crk bridge and Porcupin
Comment
JEPS3589
Downingia bacigalupii
Herbert L. Mason
1952-7-17
14384
Sierra
1.5 mi e Calpine (at junction of Calpine with Sierraville-Beckwourth road); Sierra Nevada, Sierra Valley
1524
Comment
POM311107
Downingia bacigalupii
H. L. Mason
1952-7-17
14384
Sierra
1.5 miles E of Calpine at junction of Calpine with Sierraville-Beckwourth road; Sierra Valley; Sierra Nevada.
1524
Comment
UC965519
Downingia bacigalupii
Herbert L. Mason
1952-6-17
14384
Sierra
1.5 mi e Calpine (at junction of Calpine with Sierraville-Beckwourth road); Sierra Nevada, Sierra Valley
1524
Comment
UC1192032
Downingia bicornuta var. bicornuta
Herbert L. Mason and Verne Grant
1947-7-12
13412
Modoc
s of Alturas (w side of Pit River Valley); Pit River Valley
Comment
UC635659
Downingia bicornuta var. picta
H. L. Mason
1928-5-3
4447
San Joaquin
4 mi n Clements
Comment
UC635660
Downingia bicornuta var. picta
H. L. Mason
1932-4-24
6973
San Joaquin
11 mi s Clements
Comment
UC635662
Downingia cuspidata
H. L. Mason
1928-5-3
4446
San Joaquin
4 mi n Clements
Comment
UC912373
Downingia cuspidata
Herbert L. Mason
1934-5-5
8120
Lake
sw of Mount Konocti
Comment
UC635658
Downingia montana
H. L. Mason
1922-7-19
315
Tuolumne
Mather Sierra Nevada Mountains, Yosemite National Park
1432
Comment
UC1025282
Draba breweri
Herbert L. Mason
1936-7-24
11336 A
Tuolumne
White Mountain Sierra Nevada, Conness Range
Comment
UC1025284
Draba oligosperma var. oligosperma
Herbert L. Mason
1936-7-24
11336 C
Tuolumne
slopes of White Mountain Sierra Nevada, Conness Range
Comment
SEINET6647416
Drosera rotundifolia
H. L. Mason, L. W. Reinecke
1937-7-22
11578
Tuolumne
Yosemite National Park, Swamp Lake, just south of Miguel Meadaows in the hills just west of Hetch Hetchy.
1585
Comment
CAS-BOT-BC157757
Drymocallis glandulosa var. glandulosa
H. L. Mason
1921-5-7
s.n.
Monterey
Rancho del Monte, Carmel River
Comment
UC673311
Drymocallis glandulosa var. reflexa
Herbert L. Mason
1927-6-15
3783
San Bernardino
cirque s Mount Baldy (headwaters of San Antonio River); San Gabriel Mountains, headwaters San Antonio River
2743
Comment
UC673313
Drymocallis glandulosa var. wrangelliana
Herbert L. Mason
1924-4-20
904
Alameda
Berkeley Hills Berkeley Hills (w facing slopes)
Comment
SEINET11753105
Dulichium arundinaceum
H. L. Mason
1958-1
14848
Tuolumne
Sierra Nevada, Yosemite National Park, Swamp Lake, W of Hetch Hetchy Dam
1585
Comment
NY31175
Eatonella congdonii
H. L. Mason
1935-4-30
9315
Kern
5 miles west of Bakersfield
Comment
UC1100269
Echinochloa crus-galli
Herbert L. Mason and S. Galen Smith
1948-8-19
8387
Merced
1 mi w Snelling
Comment
UC1100140
Echinodorus berteroi
Herbert L. Mason and Verne Grant
1946-8-6
12971
Colusa
pond 2.7 mi. n. of Colusa (between Sacramento R. and Butte Creek)
Comment
UC1192122
Eclipta prostrata
Herbert L. Mason and Verne Grant
1946-8-7
12985
Colusa
8 mi n Colusa; Butte Sink
Comment
UCD131244
Eclipta prostrata
H. L. Mason
1945-9-19
12725
Colusa
1 mile N of Colusa. Below causeway over Butte Sink spillway, E bank of Sacramento River.
Comment
UC629704
Egeria densa
H. L. Mason
1938-8-26
12075
San Joaquin
sw of Holt (Trapper Slough); Robert's Island
Comment
CAS-BOT-BC445825
Egeria densa
H. L. Mason
1938-8-26
12075
San Joaquin
Trapper Slough, Robert's Island, southwest of Holt
Comment
CAS-BOT-BC451501
Egeria densa
H. L. Mason
1938-8-26
12075
San Joaquin
Trapper Slough, Robert's Island, southwest of Holt
Comment
POM257232
Egeria densa
H. L. Mason
1938-8-26
12075
San Joaquin
Trapper Slough, Robert s Island, southwest of Holt.
Comment
RSA366704
Egeria densa
H. L. Mason
1938-8-26
12075
San Joaquin
Trapper Slough, Robert s Island, southwest of Holt.
Comment
UC1100979
Eichhornia crassipes
Herbert L. Mason, S. Galen Smith
1948-8-9
8300
Merced
1 mi w of Los Banos
Comment
UC1101530
Elatine brachysperma
Herbert L. Mason
1936-7-15
12757
Tuolumne
0.5 mi w Mather; Sierra Nevada
Comment
POM312316
Elatine brachysperma
H. L. Mason
1923-7-15
608
Tuolumne
Plants growing in very wet soil, and in shallow water, salt Log Meadow, 2 miles W of Mather
Comment
UC1101537
Elatine californica
Herbert L. Mason
1936-9-20
11535
Lake
base of trail; sheep corral to Snow Mt.
Comment
UC1101552
Elatine heterandra
Herbert L. Mason
1945-6-29
12625
Lake
Boggs Lake base of Mt, Hanna
Comment
UC1111019
Elatine heterandra
Herbert L. Mason
1937-5-27
11554 b
Lake
s side Mt. Konocti
Comment
POM312322
Elatine obovata
H. L. Mason
1936-7-15
12757
Tuolumne
0.5 mile west of Mather, Sierra Nevada.
Comment
CAS-BOT-BC113609
Eleocharis acicularis
Herbert L. Mason; Stanley Galen [S. Galen] Smith
1948-7-9
63
Merced
Los Banos Wildlife Refuge, 1.5 mi N of Los Banos.
Comment
POM313056
Eleocharis acicularis var. acicularis
H. L. Mason, S. Galen Smith
1948-8-11
8329
Merced
Gustine Gun Club, 3 miles east of Gustine, San Joaquin Valley
Comment
CAS-BOT-BC113544
Eleocharis bella
Herbert L. Mason
1938-7-11
11930
Tuolumne
Miguel Meadows; west of Hetch Hetchy.
1584
Comment
UC1111583
Eleocharis bella
Herbert L. Mason
1940-7-6
12313
Tuolumne
W of Hetch Hetchy (Miguel Meadows); Yosemite National Park
1584
Comment
YM-YOSE65582
Eleocharis engelmannii
H. L. Mason
1938-7-11
11931
Tuolumne
MIGUEL MEADOWS. SWAMP LAKE RESEARCH RESERVE
Comment
UC1100602
Eleocharis engelmannii var. detonsa
Herbert L. Mason
1947-8-13
13525
Modoc
N of Canby, NE side of F reservoir
Comment
CAS-BOT-BC113408
Eleocharis flavescens var. flavescens
Herbert L. Mason; Stanley Galen [S. Galen] Smith
1948-8-19
8376
Merced
San Joaquin River, bridge below Snelling.
Comment
CAS-BOT-BC112754
Eleocharis macrostachya
Herbert L. Mason; Verne Grant
1946-8-6
12956 -B
Colusa
Pond on Colusa/Marysville Hwy, 4 mi S of Colusa, W side of Sacramento River.
Comment
CAS-BOT-BC112807
Eleocharis macrostachya
Herbert L. Mason
1946-7-27
12947
Lake
Clear Lake, 2-3 miles north of Lakeport.
Comment
UC1100735
Eleocharis macrostachya
Herbert L. Mason
1948-9-4
13659
Mono
Mono Lake, Rush Creek
Comment
UC1100741
Eleocharis macrostachya
Herbert L. Mason
1946-7-27
12947
Lake
2-3 mi N of Lakeport (Clear Lake)
Comment
UC1100743
Eleocharis macrostachya
Herbert L. Mason
1947-8-15
13560
Modoc
spring leading into W side of Goose Lake, 11 mi from Davis Creek
Comment
SEINET190351
Eleocharis obtusa
Herbert L. Mason
1939-7-13
12142
Tuolumne
Yosemite National Park ; In gravel pit Miguel Meadow west of Hetch Hetchy.
1585
Comment
POM313071
Eleocharis palustris
H. L. Mason
1946-7-27
12947
Lake
Clear Lake, 2-3 miles north of Lakeport.
Comment
POM313062
Eleocharis parishii
H. L. Mason
1948-9-2
13628
Kern
Walker Pass
Comment
CAS-BOT-BC113224
Eleocharis parishii
Herbert L. Mason
1948-9-2
13629
Kern
Wet meadow, Walker Pass
Comment
UC1100128
Elodea canadensis
Herbert L. Mason and S. Galen Smith
1948-8-11
8324
Merced
about 5 mi w Merced (Black Rascal Creek); San Joaquin Valley
Comment
CAS-BOT-BC451524
Elodea canadensis
Herbert L. Mason
1948-6-29
13589
Merced
Delta road, 3 miles east of Los Banos [Banos]
Comment
UCD61430
Elymus elymoides
H. L. Mason
1936-7-23
11313
Tuolumne
Mt. Conness, Yosemite Natl. Park.
Comment
UC1178980
Emmenanthe penduliflora
Herbert L. Mason
1946-5-30
12810
Lake
East of Indian Valley, North Fork of Cache Creek
548
Comment
UC672377
Emmenanthe penduliflora
Herbert L. Mason
1926-4-26
2956
Fresno
4 miles west of Sanger
Comment
UC1083315
Ephedra viridis
H. L. Mason
1926-4-26
2960 a
Los Angeles
4 mi w of Sanger
Comment Read comments Jul 31 2014
UC1191621
Epilobium campestre
Herbert L. Mason
1947-8-13
13519
Modoc
n Canby (ne side of F reservoir); F reservoir
Comment
UC1191716
Epilobium ciliatum subsp. ciliatum
Herbert L. Mason
1947-8-13
13522
Modoc
ne side F Reservoir (n of Canby)
Comment
UC1191615
Epilobium densiflorum
Herbert L. Mason
1947-8-11
13495
Modoc
on Hwy 81 near boundary between Lassen and Modoc Counties (w margin of lake); Lower Lake
Comment
UC635384
Epilobium obcordatum
H. L. Mason
1923-9-19
784
Tuolumne
upper lake Sierra Nevada Mountains, Yosemite National Park, Gaylor Lake (near Tioga Mines)
Comment
POM256455
Epilobium obcordatum
H. L. Mason
1923-9-15
784
Tuolumne
Sierra Nevada, Yosemite National Park: Upper Lake, Gaylor Lakes, near Tioga Mine
Comment
CAS-BOT-BC190929
Epilobium pallidum
Herbert Louis Mason; Verne Grant
1947-7-13
13441
Modoc
Joseph Creek on Hwy 395.
Comment
CAS-BOT-BC190939
Epilobium pallidum
Herbert Louis Mason; Verne Grant
1947-7-13
13441
Modoc
Joseph Creek on Hwy 395.
Comment
CAS-BOT-BC190868
Epilobium pygmaeum
Herbert Louis Mason
1947-8-15
13563
Modoc
W side of Goose Lake 11 mi. from Davis Creek.
Comment
UC1076343
Equisetum X ferrissii
Herbert L. Mason
1930-10-25
5744
Monterey
headwaters of Arroyo Seco; Santa Lucia Mts.
Comment
UC912688
Equisetum X ferrissii
Herbert L. Mason
1936-7-12
11212
Mariposa
Yosemite Valley; Yosemite Valley, Merced River
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
POM312960
Equisetum laevigatum
H. L. Mason
1953-7-7
14557
Sierra
N of Sattley, Sierra Valley.
Comment
UC1076465
Equisetum telmateia subsp. braunii
Herbert L. Mason
1926-3-17
2741
Alameda
Strawberry Canyon Berkeley
Comment
UC1100247
Eragrostis hypnoides
Herbert L. Mason
1946-7-27
12951
Lake
Clear Lake 2-3 mi n Lakeport; Clear Lake
Comment
UC1100248
Eragrostis hypnoides
Herbert L. Mason
1945-9-19
12717
Colusa
1 mi above Colusa (below causeway over Butte Sink spillway); e bank of Sacramento River, Butte Sink spillway
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
UC908537
Eriastrum abramsii
Herbert L. Mason
1945-6-28
12606
Lake
2.5 mi s Kelseyville
Comment
UC908776
Eriastrum abramsii
Herbert L. Mason
1935-5-9
8313
Santa Clara
divide between Colorado Creek and headwaters of Arroyo Mocho
838
Comment
CAS-BOT-BC512631
Eriastrum abramsii
Herbert L. Mason; H. K. Sharsmith
1935-5-3
8302
Santa Clara
Above Bayo Creek, Mount Hamilton Range
609
Comment
UC971719
Eriastrum brandegeeae
H. L. Mason
1945-6-28
12604
Lake
se Borax Lake; Obsidian Ridge; Obsidian Ridge, SE of Borax Lake, Lake Co.
Comment
RSA0004735
Eriastrum brandegeeae
H. L. Mason
1945-6-28
12604
Lake
Obsidian Ridge, southeast of Borax Lake
Comment
SEINET13094911
Eriastrum brandegeeae
H. L. Mason
1945-6-28
12604
Lake
Obsidian Ridge, southeast of Borax Lake.
Comment
CAS-BOT-BC512646
Eriastrum densifolium subsp. austromontanum
Herbert L. Mason
1948-9-3
13631 a
Inyo
Onion Valley
Comment
UC665609
Eriastrum pluriflorum
Herbert L. Mason
1941-7-3
12489
Santa Barbara
14 mi w Maricopa; head of Cuyama Valley
762
Comment Read comments Apr 29 2014
UC908090
Eriastrum pluriflorum
Herbert L. Mason
1935-4-30
8279
San Bernardino
sw Trona; Mohave Desert, Poison Canyon
Comment
UC908868
Eriastrum pluriflorum
Herbert L. Mason
1933-6-10
7252
Contra Costa
Brentwood
Comment
SBBG29124
Eriastrum pluriflorum
H. L. Mason
1941-7-3
12489
San Luis Obispo
head of Cuyama Valley, 14 mi W of Maricopa
762
Comment
CAS-BOT-BC188011
Eriastrum virgatum
Herbert L. Mason
1923-6-23
541
Monterey
Carmel River, 10 miles above Carmel, near schoolhouse
Comment
UC908456
Eriastrum virgatum
Herbert L. Mason
1923-6-23
541
Monterey
10 mi above Carmel (steep bluffs overlooking river, near school house); Carmel River
Comment
UC908869
Eriastrum virgatum
Herbert L. Mason
541
Monterey
along the Carmel River Carmel Valley
Comment
UC672265
Ericameria cooperi var. cooperi
H. L. Mason
1926-4-27
3045
Los Angeles
Big Pine Recreation Camp Road between Big Rock Creek and Little Rock Creek
Comment
POM247242
Ericameria ericoides var. ericoides
H. L. Mason
1936-9-13
11525
Monterey
Prunedale, 9 miles N of Salinas
Comment
UC672254
Ericameria linearifolia
H. L. Mason
1926-3-7
2707
Contra Costa
near summit Mount Diablo
Comment
UCD131476
Ericameria nauseosa var. oreophila
Herbert L. Mason; Verne Grant
1947-7-12
13409
Modoc
west side of the South Fork of Pit River Valley, southwest of Alturas.
Comment
UC1077098
Erigeron breweri var. breweri
Herbert L. Mason
1938-7-7
11869
Tuolumne
between Swamp Lake Hetch-Hetchy; Sierra Nevada, Yosemite National Park, Brecca Ridge
1981
Comment
UC912503
Erigeron breweri var. breweri
Herbert L. Mason
1932-9-9
7182
Alpine
near Carson Pass; Carson Meadows
Comment
UC714411
Erigeron compositus
Herbert L. Mason
1936-7-26
11388
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
UC912499
Erigeron elmeri
H. L. Mason
1923-8-4
709
Tuolumne
Lamberts Dome Yosemite Nationa Park, Lamberts Dome
Comment
UC1077080
Erigeron foliosus var. foliosus
Herbert L. Mason
1946-6-7
12826
Santa Barbara
0.5 mi w Camuesa Canyon
Comment
UC482963
Erigeron foliosus var. hartwegii
H. L. Mason
1932-4-24
Amador
between Ione and Latrobe (Dry Creek Bridge); Dry Creek
Comment
CAS-BOT-BC300648
Erigeron foliosus var. hartwegii
Herbert L. Mason
1932-4-24
s.n.
El Dorado
Dry Creek Bridge, between Ione and Latrobe
Comment
JEPS21924
Erigeron linearis
Herbert L. Mason
1923-8-9
743
Tuolumne
ridge e of 2nd Gaylor Lake (near Tioga Mines); Yosemite National Park
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
UC712512
Erigeron pygmaeus
Herbert L. Mason
1936-7-31
11467
Mono
e of Saddlebag Lake; Sierra Nevada, Tioga Crest
3474
Comment
UC672374
Eriodictyon californicum
Herbert L. Mason
1925-4-12
1336
Marin
Mt. Tamalpais; Pipe Line Trail
Comment
SD45359
Eriodictyon capitatum
Herbert L. Mason
1947-5-2
13208
Santa Barbara
Purissima Hills, Pine Canyon
Comment
UC735025
Eriodictyon capitatum
Herbert L. Mason
1947-5-2
13208
Santa Barbara
Purissima Hills Pine Canyon; , Pine Canyon
Comment
UC635081
Eriogonum angulosum
Herbert L. Mason
1926-4-26
2996
Los Angeles
1 mi e Palmdale; Mohave Desert
Comment
CAS-BOT-BC248527
Eriogonum angulosum
H. L. Mason
1930-4-20
s.n.
San Benito
14 miles south of Hollister
Comment
CAS-BOT-BC248728
Eriogonum arborescens
Herbert L. Mason
1927-9-24
4095
Santa Barbara
Near West Willow Creek, Santa Cruz Island
Comment
SEINET3836444
Eriogonum arborescens
Herbert L. Mason
1927-9-23
4084
Santa Barbara
Prisoners Harbor, Santa Cruz Island
Comment
CAS-BOT-BC248837
Eriogonum compositum var. compositum
H. L. Mason
1931-5-9
5865
Siskiyou
Shasta Creek
Comment
UC635009
Eriogonum compositum var. compositum
H. L. Mason
1929-5-18
5327
Siskiyou
hills along Shasta Creek Canyon Shasta Creek Canyon
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
UC634991
Eriogonum fasciculatum var. foliolosum
Herbert L. Mason
1923-6-22
528
San Luis Obispo
near San Luis Obispo; Camp Fremont
Comment
UC1076551
Eriogonum gracile
Herbert L. Mason
1936-9-13
11530
Santa Clara
w Madrone Station
Comment
UC635433
Eriogonum gracile
H. L. Mason
September, 1930
5910
Monterey
low hills at upper end of Elkhorn Slough between Watsonville and Castroville; Elkhorn Slough
Comment
UC635083
Eriogonum inflatum var. inflatum
Herbert L. Mason
1926-4-28
3093
San Bernardino
Box S Springs Mohave Desert, Box S Springs
Comment
UC1093645
Eriogonum luteolum var. luteolum
Herbert L. Mason
1946-7-4
12899
Sonoma
2 mi e Occidental
Comment
UC634591
Eriogonum luteolum var. pedunculatum
H. L. Mason
1929-10-4
5454
Placer
2.4 mi below Weimar
Comment
CAS-BOT-BC261383
Eriogonum nudum var. deductum
Herbert L. Mason
1925-7-29
2181
Tuolumne
Mather
Comment
UC635076
Eriogonum nudum var. deductum
Herbert L. Mason
1925-7-29
2181
Tuolumne
Mather
Comment
UC641820
Eriogonum ovalifolium var. nivale
H. L. Mason
1936-7-24
11327
Tuolumne
White Mountain Sierra Nevada, Mount Conness Range, White Mountain
Comment
UC641822
Eriogonum ovalifolium var. nivale
H. L. Mason
1936-7-31
11465
Mono
e Saddlebag Lake (Tioga Crest); Sierra Nevada, Tioga Crest
Comment
UC641993
Eriogonum ovalifolium var. nivale
H. L. Mason
1936-7-23
11285
Tuolumne
alpine slopes of Mount Conness Sierra Nevada, Mount Conness
Comment
UC642010
Eriogonum ovalifolium var. nivale
H. L. Mason
1936-7-28
11411
Mono
vicinity Mount Dana (Dana Plateau); Sierra Nevada, Dana Plateau
3657
Comment
POM256509
Eriogonum parvifolium var. parvifolium
H. L. Mason, Edward Lee
1934-10
9062
Monterey
Point Lobos State Park
Comment
UC635807
Eriogonum pusillum
Herbert L. Mason
1926-4-26
3012
Los Angeles
near Rock Creek; Mohave Desert
Comment
SEINET3405321
Eriogonum roseum
Herbert L. Mason
1934-9-8
Monterey
3 mi SE of "The Indians" San Antonio River
549
Comment
UC634593
Eriogonum roseum
H. L. Mason
1930-10-25
5776
Monterey
along San Antonio River between Jolon and Santa Lucia Ranger Station; Santa Lucia Mountains, San Antonio River
Comment
UC635008
Eriogonum spergulinum var. spergulinum
H. L. Mason
1928-7-4
4871
Tuolumne
Tuolumne Meadows
Comment
CAS-BOT-BC267797
Eriogonum umbellatum var. furcosum
Herbert L. Mason
1925-7-27
2179
Tuolumne
Mathes
Comment
UC634993
Eriogonum umbellatum var. nevadense
Herbert L. Mason
1924-6-18
1051
Plumas
Graeagle
Comment
UC635516
Eriogonum ursinum
Herbert L. Mason
1924-6-18
1055
Plumas
near summit of road between Graeagle and Gold Lake
Comment
UC1178885
Eriophorum crinigerum
Herbert L. Mason
1941-7-7
12509
Madera
sphagnum bog just s. of Givens Lake trail junction Givens Lake; Sierra Nevada, Yosemite Nat'l Park
2865
Comment
GH424386
Eriophorum gracile
H. L. Mason
1938-7-10
11913
Unknown
South island in Swamp Lake, west of Hetch Hetchy
1584
Comment
UCD49878
Eriophorum gracile
Herbert L. Mason; Lawrence W. Reinecke
1937-7-22
11579
Tuolumne
Swamp Lakes, just south of Miguel Meadows, east of Hetch Hetchy dam.
Comment
UC1199818
Eriophyllum confertiflorum var. confertiflorum
Herbert L. Mason
1940-5-20
12287
Marin
back of Tiburon
Comment
UC566761
Eriophyllum confertiflorum var. confertiflorum
H. L. Mason
1932-4-28
7043
Monterey
Pajero Hills Pajaro Hills
Comment
UC566763
Eriophyllum confertiflorum var. confertiflorum
H. L. Mason
1923-6-19
515
Ventura
Horn Canyon
Comment
UC632870
Eriophyllum confertiflorum var. confertiflorum
H. L. Mason
1936-7-6
11136
Mariposa
Yosemite Falls Trail Yosemite National Park, Yosemite Falls Trail
Comment
GH427091
Eriophyllum jepsonii
H. L. Mason
1935-5-8
10008
Unknown
Patterson Road, twenty miles from mouth of Arroyo del Puerto, Mount Hamilton Range
533
Comment
UC912251
Eriophyllum lanatum var. arachnoideum
Herbert L. Mason
1934-4-28
8096
Sonoma
Dohrman Creek
Comment
UC566756
Eriophyllum lanatum var. grandiflorum
H. L. Mason
1932-4-24
6976
Calaveras
Mokulumne River Bridge Comanche, Mokulumne River Bridge
Comment
UC566746
Eriophyllum pringlei
H. L. Mason
1926-4-26
2997
Los Angeles
1 mi e Palmdale
Comment
UC769998
Erodium botrys
Herbert L. Mason
1934-3-25
7954
Sacramento
Rio Linda, Keithly ranch Sacramento Valley
Comment
SFV16503
Erodium moschatum
S. Mason, H. M. Mason
1993-3-21
34
Los Angeles
San Fernando Valley Los Angeles, Sepulveda. Backyard of 9629 Langdon Ave.
267
Comment
UC566784
Eryngium armatum
Herbert L. Mason
1927-7-30
3986
Monterey
Cypress Point
Comment
UC1191956
Eryngium racemosum
Herbert L. Mason and S. Galen Smith
1948-8-17
8338
Stanislaus
ca. 2 mi. e. Westley (near Grayson)
Comment
UC1081568
Erysimum capitatum
Herbert L. Mason
1936-4-11
11060
Calaveras
s Sheep Ranch; San Antonio Creek
Comment
UCD114980
Erysimum capitatum
Steve Mason
1993-5-1
26
Los Angeles
on Sulfur Springs Road, 200 feet off Angeles Crest Highway on right roadcut.
1798
Comment
UC673520
Erysimum capitatum
H. L. Mason
1926-3-14
2725
Napa
Mount St. Helena
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
JEPS53554
Erysimum capitatum var. capitatum
H. L. Mason
1932-3-20
San Joaquin
plain 2 mi e Midway (e Alameda Co)
Comment Read comments Oct 9 2006
RSA518826
Erysimum capitatum var. capitatum
H. L. Mason
1932-3-20
s.n.
Alameda
2 mi E of Midway.
Comment
UC1077093
Erysimum perenne
Herbert L. Mason
1938-7-28
12033
Tuolumne
e Tilden Lake; Sierra Nevada, Yosemite National Park, Macomb Ridge
3048
Comment
UC1191426
Erysimum repandum
Herbert L. Mason
1947-7-10
13346
Modoc
2 mi e Alturas; Dorris Reservoir
Comment
UC1077102
Erythranthe grayi
Herbert L. Mason
1938-7-16
11953
Madera
4 mi s Miami Ranger Station; Sierra Nevada
1219
Comment
CAS-BOT-BC151530
Erythranthe laciniata
Herbert L. Mason
1938-7-25
12004
Tuolumne
Deep Lake, south base of Mahan Peak, Jack Main Canyon - Sierra Nevada, Yosemite National Park
2438
Comment
UC1083341
Erythronium hendersonii
Herbert L. Mason
1931-5-9
5861 a
Siskiyou
Siskiyou Summit
Comment
UC635480
Eschscholzia californica
H. L. Mason
1924-11-15
1157
Marin
Willow Camp Bolinas Bay
Comment
CAS-BOT-BC402950
Eschscholzia californica
H. L. Mason
1917-3-10
50
Alameda
Lake Temescal
Comment
CAS-BOT-BC403545
Eschscholzia californica
H. L. Mason
1922-3-26
s.n.
San Mateo
Mouth of Gazos Creek
Comment
CAS-BOT-BC403654
Eschscholzia californica
H. L. Mason
1922-3-26
s.n.
Santa Cruz
Between Davenport and Scott Creek Valley
Comment
CAS-BOT-BC419524
Eschscholzia lobbii
H. L. Mason
1929-3-24
5099
Madera
Eighteen miles east of Madera at junction of Yosemite Road
Comment
UC635605
Eschscholzia lobbii
H. L. Mason
1929-3-24
5099
Madera
18 mi e Madera (at junction of Yosemite Rd)
Comment
UC635608
Eschscholzia parishii
H. L. Mason
1928-3-10
4244 a
Riverside
road from Indio to Palm Springs
Comment
UC635609
Eschscholzia parishii
H. L. Mason
1928-3-10
4191
Riverside
Whitewater River
Comment
UC592185
Eucrypta chrysanthemifolia var. chrysanthemifolia
H. L. Mason
1925-3-10
1292
Contra Costa
Mount Diablo
Comment
RSA114066
Eucrypta micrantha
H. L. Mason
1952-4-11
14253
San Bernardino
Black lavas north of Pisgah Crater.
Comment
UC635616
Euonymus occidentalis var. occidentalis
H. L. Mason
1924-5-18
1016
San Mateo
Jasper Ridge near Stanford (creek below sand hill caves); Jasper Ridge
Comment Read comments Sep 19 2011
UC570797
Euphorbia crenulata
H. L. Mason
1926-3-21
2768
Lake
between Middletown and Mt. St. Helena
Comment
SD46096
Euphorbia eriantha
Herbert L. Mason
1952-4-9
14232
San Bernardino
10 miles south of Needles
Comment
UC570794
Euphorbia spathulata
H. L. Mason
1932-4-17
6942
Santa Clara
1 mi e New Almaden (hill)
Comment
UC1110532
Festuca minutiflora
Herbert L. Mason
1936-7-24
11335
Tuolumne
White Mountain Sierra Nevada, Conness Range
Comment
SEINET190344
Filago gallica
H. L. Mason
1932-4-28
7042
Monterey
Pajaro Hills
Comment
UC566906
Forestiera pubescens
H. L. Mason
1923-6-14
369
Monterey
King City bridge over Salinas River; King City, Salinas River
Comment
GH425837
Frangula californica
H. L. Mason
1930-10-25
5742
Unknown
Headwaters of the Arroyo Seco, Santa Lucia Mountains
Comment
A378109
Frangula purshiana
H. L. Mason
1924-6-19
1071
Unknown
Along stream running north into Bear Lake
Comment
CAS-BOT-BC223661
Frankenia salina
Herbert L. Mason
1945-8-17
12667
Solano
5 miles north of Rio Vista
Comment
GH376201
Frankenia salina
H. L. Mason
1928-9-30
4967
Unknown
San Joaquin Delta near Holt
Comment
GH376220
Frankenia salina
H. L. Mason
1929-10-13
5503
Unknown
2-1/3 miles north of Cambria
Comment
GH401236
Fraxinus latifolia
H. L. Mason
1928-5-3
4490 a
Unknown
Near Cosumnes River bridge at mouth of Clark Creek
Comment
A422632
Fremontodendron californicum
H. L. Mason
1935-5-30
10009
Unknown
Four miles north of Knoxville Mines
Comment
CAS-BOT-BC205893
Fremontodendron californicum
Herbert L. Mason
1935-5-30
10009
Napa
Four miles north of Knoxville Mines
Comment
UC1039636
Fremontodendron californicum
Herbert L. Mason
1935-4-30
6274
Kern
Onyx
Comment
UC672111
Fritillaria affinis
Herbert L. Mason
1926-3-21
2776
Lake
Middletown to Mount St. Helena (via Toll House Canyon)
Comment
UC672113
Fritillaria affinis
Herbert L. Mason
1925-3-1
1268
San Francisco
San Francisco, Bernal Heights Bernal Heights; San Francisco, Bernal Heights
Comment
CAS-BOT-BC130026
Fritillaria affinis
H. L. Mason
1917-4-4
78
Marin
Tocaloma
Comment
UC673373
Fritillaria biflora
Herbert L. Mason
1934-3-31
8057
San Luis Obispo
6 mi n of Cambria
Comment
UC672098
Fritillaria recurva
Herbert L. Mason
1926-3-14
2732
Napa
e side of Mount St. Helena, Toll House Canyon Toll House Canyon; Mount St. Helena, Toll House Canyon
Comment
CAS-BOT-BC179876
Galeopsis tetrahit
Herbert Louis Mason; Verne Grant
1947-7-12
13417
Modoc
S end of W side road, Pit River Valley, S of Alturas.
Comment
UC1039517
Galium andrewsii subsp. andrewsii
Herbert L. Mason
1930-6-1
5678
Lake
St. Helena Creek Mt. St. Helena
Comment
UC1039513
Galium bifolium
Herbert L. Mason
1925-8-11
2222 b
Tuolumne
Morraine Flat Tuolumne Meadows
2743
Comment
UC1039510
Galium bolanderi
H. L. Mason
1928-6-28
4863
Mariposa
Wawona
Comment
UC1039518
Galium californicum subsp. californicum
H. L. Mason
1932-4-28
7037
Monterey
Pajaro Hills
Comment
UC964759
Galium murale
Herbert L. Mason
1944-3-17
Contra Costa
Briones Hills
Comment
YM-YOSE66571
Galium nuttallii
Harry L. Mason
1938-7-10
11921
Tuolumne
SWAMP LAKE, SOUTH SHORE
1554
Comment
UCSB44754
Galium nuttallii subsp. nuttallii
Mason, Renee
1980-6-5
Santa Barbara
1 mile up San Ysidro Canyon trail along shady, right side; San Ysidro Canyon at end of Park Lane
335
Comment
UC1111587
Galium trifidum
Herbert L. Mason
1941-10-19
12530
Mendocino
Fort Bragg
Comment
UC1311814
Galium trifidum var. pusillum
Herbert L. Mason
1939-8-2
12194
El Dorado
near mouth of Upper Truckee River (s end of lake); Lake Tahoe
Comment
UC632791
Galium trifidum var. pusillum
H. L. Mason
1936-7-12
11241
Mariposa
Peregoy Meadow Yosemite National Park, Glacier Point Road
2255
Comment
UC672195
Gamochaeta ustulata
H. L. Mason
1932-4-26
7045
Monterey
Pajaro Hills
Comment
UC634763
Garrya elliptica
H. L. Mason
1929-9-1
5403
Mendocino
3 mi n Fort Bragg
Comment
UC634814
Garrya elliptica
H. L. Mason
1932-8-26
7149
Mendocino
1.5 mi n Albion
Comment
CAS-BOT-BC186383
Garrya flavescens
H. L. Mason
1927-6-14
3760
San Bernardino
San Antonio Canyon, San Gabriel Mountains
1219
Comment
UC634791
Garrya flavescens
H. L. Mason
1926-4-11
2855
Alameda
Cedar Mountain Mount Hamilton Range (and Rancho Repose)
Comment
UC634787
Garrya veatchii
H. L. Mason
1927-6-14
3760
San Bernardino
San Antonio Canyon; San Gabriel Mountains
1219
Comment
UC1093945
Gaultheria humifusa
Herbert L. Mason
1941-7-14
12520
Madera
Yosemite National Park, Ottoway Lake Ottoway Lake; Sierra Nevada, Yosemite National Park, Ottoway Lake
2987
Comment
UC634693
Gayophytum humile
H. L. Mason
1934-5-5
8118
Lake
sw Mount Konocti
Comment
UC1191623
Gayophytum racemosum
Herbert L. Mason and Verne Grant
1947-7-9
13310
Modoc
Cedar Pass Warner Range (summit of range)
1920
Comment
UC1191760
Gayophytum racemosum
Herbert L. Mason
1948-7-17
13603
Siskiyou
Eastern Grass Lake
Comment
UC712444
Gentiana newberryi
H. L. Mason
1936-7-24
11339
Tuolumne
White Mountain Sierra Nevada, Mount Conness Range
3505
Comment
POM312857
Gentiana sceptrum
H. L. Mason
1946-7-4
12891
Sonoma
Pitkin Marsh, between Santa Rosa and Forestville.
Comment
UC1077090
Geranium californicum
Herbert L. Mason
1938-7-8
11884
Tuolumne
w of Hetch Hetchy; Yosemite National Park, Miguel Meadows
1584
Comment
UC571127
Geranium core-core
H. L. Mason
1928-4-7
4276
Sonoma
mouth of Russian River, Jenner Jenner; Russian River, Jenner
Comment
UC571136
Geranium dissectum
H. L. Mason
1926-5-26
3243
Alameda
Niles Canyon
Comment
UC555622
Geum macrophyllum
H. L. Mason
1923-8-6
712
Tuolumne
Island of Lyell Fork
Comment
UC909031
Gilia achilleifolia subsp. achilleifolia
Herbert L. Mason
1924-4-20
902
Alameda
along higher slopes of the Berkeley Hills Berkeley Hills
Comment
UC1250318
Gilia achilleifolia subsp. multicaulis
Herbert L. Mason
1957-5-11
14737
San Benito
Clear Creek Canyon 4.5 mi from Hernandez; South Coast Ranges, Clear Creek Canyon
Comment
UC908811
Gilia achilleifolia subsp. multicaulis
Herbert L. Mason
1928-5-6
4561
Alameda
Cedar Mountain Mount Hamilton Range, Cedar Mountain
Comment
UC908909
Gilia achilleifolia subsp. multicaulis
Herbert L. Mason
1926-4-11
2822
Alameda
Rancho Repose , Rancho Repose (Cedar Mt.)
Comment
UC908976
Gilia achilleifolia subsp. multicaulis
Herbert L. Mason
1924-5-18
1019
Santa Clara
foot of Searsville Dam
Comment
UC908835
Gilia aliquanta
Herbert L. Mason
1926-4-26
2973
Los Angeles
four mi s Vincent; Mint Canyon Highway, Soledad Pass
Comment
POM282929
Gilia angelensis
C. T. Mason
1943-3-28
125
San Bernardino
Mentone Ranch, Mentone.
Comment
UC908491
Gilia brecciarum subsp. neglecta
Herbert L. Mason
1938-4-15
11724
San Bernardino
along road between Johannesburg and Trona; Mohave Desert, btw Johannesburg and Trona
Comment
UC908804
Gilia brecciarum subsp. neglecta
Herbert L. Mason
1935-4-30
8343
Kern
Walker Pass
Comment
UC908509
Gilia cana subsp. speciosa
Herbert L. Mason
1935-3-29
8212
San Bernardino
Red Rock Canyon; Mohave Desert
Comment
SEINET12271312
Gilia capillaris
H. L. Mason
1950-1
14049
Trinity
Summit of grade, Scott Mountain
Comment
SEINET200250
Gilia capillaris
Herbert L. Mason
1955-7-31
14643
Lassen
Near Westwood Junction (railroad station 15mi west of Susanville)
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
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
POM257165
Gilia capitata subsp. chamissonis
H. L. Mason, Annetta Carter
1938-5-18
11840
Marin
Point Reyes Peninsula, 12.5 miles from Inverness.
Comment
UC908158
Gilia capitata subsp. pedemontana
Herbert L. Mason
1926-5-24
3281
Nevada
5 mi s Grass Valley (Rattlesnake Creek); , s of Grass Valley
609
Comment
UC908108
Gilia capitata subsp. staminea
Herbert L. Mason
1929-3-31
5159
Contra Costa
Antioch; San Joaquin River
Comment
UC908226
Gilia clivorum
Herbert L. Mason
1935-3-24
8169
Alameda
summit of grade between Livermore and Tesla; summit of grade btw Livermore and Tesla
Comment
UC909028
Gilia clivorum
Herbert L. Mason
1932-4-28
7040
Monterey
e Watsonville (Pajaro Hills); e of Watsonville, Pajaro Hills
Comment
UC909033
Gilia clivorum
Herbert L. Mason
1929-3-29
5128
Contra Costa
2 mi e Clayton (Marsh Creek Road); e of Clayton
Comment
UC909029
Gilia clivorum
Herbert L. Mason
1938-4-14
11700
Fresno
outskirts w South Mendota; w of South Mendota
Comment
UC908484
Gilia diegensis
Herbert L. Mason
1928-3-11
4252
Riverside
Palm Springs Colorado Desert, Palm Springs
Comment
CAS-BOT-BC226218
Gilia interior
Herbert L. Mason
1935-4-20
6268
Kern
Hobo Hot Springs, Kern River Canyon
Comment
CAS-BOT-BC226220
Gilia interior
Herbert L. Mason
1938-4-17
11732
Kern
Three and one-half miles east of Hobo Hot Springs, Kern River Canyon
Comment
UC908384
Gilia interior
Herbert L. Mason
1935-5-2
8385
Kern
Piute Kern River Canyon drainage, Piute
Comment
UC908425
Gilia interior
Herbert L. Mason
1934-3-28
8000
Kern
Kern River Canyon
Comment
HSC16974
Gilia latiflora
H. L. Mason
1935-3-29
8204
Kern
2 mi. W of Randsburg, Mojave Desert
Comment
CAS-BOT-BC225376
Gilia latiflora subsp. davyi
Herbert L. Mason
1935-3-29
8195
San Bernardino
Twelve miles west of Barstow, Mohave Desert
Comment
CAS-BOT-BC226346
Gilia latiflora subsp. davyi
Herbert L. Mason
1926-4-27
3060
Los Angeles
Thirty miles west of Victorville, Mohave [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
CAS-BOT-BC225410
Gilia latiflora subsp. latiflora
Herbert L. Mason
1926-4-28
3109
San Bernardino
Cajon Pass
Comment
UC1275782
Gilia lottiae
Herbert L. Mason
1963-6-24
15219
Mono
Paoha Island Mono Lake, Paoha Island
Comment
UC908130
Gilia minor
Herbert L. Mason
1926-4-26
3005
Los Angeles
Little Rock Mohave Desert, Little Rock
Comment
UC908134
Gilia minor
Herbert L. Mason
1945-3-30
8245
Kern
Lost Hills w Bakersfield; Lost Hills w of Bakersfield
Comment
UC908181
Gilia minor
Herbert L. Mason
1935-3-30
8244
Kern
fourteen mi w Bakersfield; w of Bakersfield
Comment
UC907870
Gilia modocensis
Herbert L. Mason
1934-3-30
8034
Los Angeles
s Valyermo (Rock Creek, n side of San Gabriel Mountains); San Gabriel Mountains, s of Valyermo
Comment
CAS-BOT-BC402109
Gilia ochroleuca
Herbert L. Mason
1938-5-8
11795
Santa Barbara
Vicinity of the summit of Figueroa Mountain
Comment
UC964726
Gilia ochroleuca subsp. bizonata
H. L. Mason
1926-4-26
2967
Los Angeles
Summit of First Grade Mint Canyon Road (Mint Canyon Road)
Comment
UC964781
Gilia ochroleuca subsp. bizonata
Herbert L. Mason
1926-4-26
2967
Los Angeles
Summit of 1st Grade, Mint Canyon Road Mint Canyon Road
Comment
UC964737
Gilia ochroleuca subsp. bizonata
Herbert L. Mason
1926-4-27
3048
Los Angeles
between Rock Creek and Little Rock Creek (along Los Angeles Co. Park Road, Mohave Desert); Mohave Desert, along Los Angeles Co. Park Road
Comment
CAS-BOT-BC407619
Gilia ochroleuca subsp. exilis
Herbert L. Mason
1926-4-30
3112
Riverside
Temecula Canyon, 1 mile S of Temecula
Comment
CAS-BOT-BC401927
Gilia ochroleuca subsp. ochroleuca
Herbert L. Mason
1934-3-30
8029
Inyo
Summit of pass, Panamint Mountains
Comment
UC908026
Gilia ochroleuca subsp. ochroleuca
Herbert L. Mason
1932-4-1
6874
Kern
road from Roosevelt to Muroc; Mohave Desert
Comment
UC908480
Gilia ochroleuca subsp. ochroleuca
Herbert L. Mason
1935-3-29
8215
San Bernardino
three mi n Johannesburg (on road to Searles Lake, Mohave Desert); Mohave Desert, n of Johannesburg
Comment
UC908899
Gilia ochroleuca subsp. vivida
Herbert L. Mason
1927-6-15
3774
San Bernardino
slopes of Mount San Antonio (Old Baldy) , slopes Mount San Antonio (San Gabriel Mountains)
2438
Comment
UC908865
Gilia scopulorum
H. L. Mason
1940-3-22
12243
Inyo
4 mi e Victorville (Titus Canyon, Grapevine Mountains); Death Valley National Monument, Grapevine Mountains
883
Comment
POM310924
Gilia sinuata
H. L. Mason
1935-3-29
8203
Kern
2 miles west of Randsburg
Comment
SD45384
Gilia sinuata
Herbert L. Mason
1935-3-29
8203
Kern
2.0 miles west of Randsburg.
Comment
SEINET12532322
Gilia tenuiflora subsp. arenaria
Herbert L. Mason
1933-1
Monterey
Comment
UC748761
Gilia tenuiflora subsp. interior
Herbert L. Mason
1935-4-30
8340
Kern
Walker Pass; ; Walker Pass, Kern Co.
Comment
UC908560
Gilia tricolor subsp. tricolor
Herbert L. Mason
1935-3-27
8172
Fresno
along road to Firebaugh w Fresno; w of Fresno along road to Firebaugh
Comment
UC908576
Gilia tricolor subsp. tricolor
Herbert L. Mason
1929-3-29
5118
Contra Costa
Mount Diablo
762
Comment
UC908597
Gilia tricolor subsp. tricolor
Herbert L. Mason
1925-3-23
1310
Alameda
Sunol
Comment
UC963782
Gilia tricolor subsp. tricolor
Herbert L. Mason
1929-3-23
5097
Madera
hills e Madera; e of Madera
Comment
UC635648
Githopsis specularioides
H. L. Mason
1928-4-29
4429
Contra Costa
Sycamore Canyon, s slopes of Mt. Diablo Mt. Diablo
Comment
UC1100355
Glyceria borealis
Herbert L. Mason
1948-7-18
13618
Siskiyou
Grass Lake
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-BC49534
Gnaphalium palustre
Herbert Louis Mason
1947-8-13
13521
Modoc
NE side of F Reservoir, N of Canby.
Comment
UC1056445
Gnaphalium palustre
Herbert L. Mason
1936-7-12
11233
Mariposa
Glacier Point road Sierra Nevada, Yosemite National Park, Peregoy Meadow
2255
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
JEPS21897
Gratiola ebracteata
Herbert L. Mason
1945-6-29
12621
Lake
Boggs Lake at base Mount Hanna; base of Mount Hanna, Boggs Lake
Comment
UC672547
Gratiola ebracteata
H. L. Mason
1928-5-3
4473
Amador
near Carbondale; hills near Carbondale
Comment
UC1191894
Gratiola neglecta
Herbert L. Mason and Verne Grant
1947-7-11
13374
Modoc
along Highway #395 s Alturas (near w side of road); South Fork of Pitt River
Comment
UC1051437
Gratiola neglecta
Herbert L. Mason
1955-8-14
14656
Modoc
n Rim Rock Reservoir (Drift Fence Reservoir); , n of Rim Rock Reservoir
Comment
CAS-BOT-BC304560
Grindelia hirsutula
H. L. Mason
1921-7-3
s.n.
San Mateo
Pescadero - La Honda Road
Comment
CAS-BOT-BC304564
Grindelia hirsutula
H. L. Mason
1921-7-3
s.n.
San Mateo
Pescadero - La Honda Road
Comment
RSA128842
Grindelia hirsutula
H. L. Mason
1921-7-3
s.n.
San Mateo
Pescadero-La Honda Road.
Comment
POM273727
Guillenia flavescens
H. L. Mason
1935-3-24
10005
Alameda
West end of Corral Hollow.
Comment
UC672169
Gutierrezia sarothrae
H. L. Mason
1926-5-2
3205
Riverside
Temecula Valley
Comment
UC573076
Hackelia nervosa
H. L. Mason
1922-7-26
336
Mariposa
Spur of Porcupine Meadow (Tioga Pass Road); Sierra Nevada Mountains, Yosemite National Park
2438
Comment
UC672257
Hazardia squarrosa var. squarrosa
H. L. Mason
1930-10-25
5772
Monterey
banks of San Antonio River San Antonio River
Comment
UCD132678
Hedypnois cretica
H. L. Mason; A. Borthwick
1921-3-20
s.n.
Santa Clara
Guadalupe Canyon.
Comment
UC565501
Hedypnois rhagadioloides
H. L. Mason
1928-4-13
4333
Sonoma
hills between Santa Rosa and Calistoga (Reili School)
Comment Read comments Mar 30 2009
YM-YOSE65589
Hemicarpha
H. L. Mason
1938-7-10
11905
Tuolumne
SWAMP LAKE RESEARCH RESERVE. GRAVEL PIT LAKE. MIGUEL MEADOW
Comment
SEINET4170661
Hemicarpha occidentalis
H. L. Mason
1938-7-13
11945
Mariposa
Base of El Capitan, Yosemite Valley; Yosemite National Park
1227
Comment
UC912270
Hemizonia congesta
Herbert L. Mason
1929-10-12
5487
San Luis Obispo
5.2 mi from Atascadero
Comment
UC912566
Hemizonia congesta subsp. luzulifolia
Herbert L. Mason
7058
Contra Costa
Laundry Farm Oakland Hills
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
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
SBBG26795
Hesperevax caulescens
H. L. Mason
1939-4-16
12081
San Joaquin
ca. 9 mi SE of Stockton at jct of Austin Rd and Little John Crk
Comment
UC629721
Hesperevax caulescens
H. L. Mason
1939-4-16
12081
San Joaquin
Junction of Austin Road and Little John Creek; Stockton
Comment
UC672095
Hesperocallis undulata
Herbert L. Mason
1928-3-10
4208
Riverside
Coachella Mountains, Hidden Springs Canyon Hidden Springs Canyon; Coachella Mountains, Hidden Springs Canyon
Comment
UC571112
Hesperolinon bicarpellatum
H. L. Mason
June, 1930
5689
Lake
four mi e Middletown
Comment
UCD110475
Hesperolinon bicarpellatum
Herbert L. Mason
1945-6-28
12596
Lake
2.8 miles northeast from Middletown.
Comment
UC558458
Hesperolinon breweri
Herbert L. Mason
1936-6-14
Contra Costa
ridge running s Mount Diablo (head of Creek); Marsh Creek
Comment
UC1212443
Hesperolinon californicum
Herbert L. Mason
1946-5-30
12795
Lake
near Middletown; Inner North Coast Ranges, Locomono Creek
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
UCD110518
Hesperolinon disjunctum
Herbert L. Mason
1952-6-19
14306
Glenn
Black Diamond Ridge, inner North Coast Ranges.
Comment
RSA151821
Hesperolinon disjunctum
H. L. Mason
1952-6-19
14301
Colusa
Between Fouts Springs and Red Bridge Public Camp, 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
OBI12534
Hesperolinon micranthum
Herbert L. Mason
1946-7-4
12895
Sonoma
Inner North coast Ranges. 2 mi E of Occidental on Harrison Grade
Comment
UC1212428
Hesperolinon micranthum
Herbert L. Mason
1946-7-4
12895
Sonoma
2 mi e Occidental (on Harrison Grade); Inner North Coast Ranges
Comment
UC1212238
Hesperolinon micranthum
Herbert L. Mason
1950-7-1
14046
Siskiyou
on road from Callahans to summit of mountain; Scott Mountain grade
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
RSA151797
Hesperolinon spergulinum
H. L. Mason
1946-7-4
12901
Sonoma
2 miles east of Occidental.
Comment
UC635456
Hesperomecon linearis
H. L. Mason
1929-3-23
5092
Tulare
3 mi above Springville, Middle Tulare River
Comment
UC635637
Heterocodon rariflorum
H. L. Mason
Apr 1930
5551
Stanislaus
2 mi s Knight's Ferry (8 mi e of Oakdale)
Comment
SEINET10460617
Heterocodon rariflorum
Mason
Mason 11199
Mariposa
WAWONA
Comment
UC672168
Heterotheca grandiflora
Herbert L. Mason
1927-10-4
4122
Santa Cruz
Ano Nueva Pt. Mouth of Waddell Creek, Ano Nueva Pt.
Comment
UC1093931
Heterotheca sessiliflora subsp. bolanderi
Herbert L. Mason
1929-9-1
5405
Mendocino
3 mi n Fort Bragg
Comment
UC912313
Heterotheca sessiliflora subsp. bolanderi
Herbert L. Mason
1929-9-1
5405
Mendocino
sand dunes 3 mi n Fort Bragg
Comment
CAS-BOT-BC424430
Heuchera pilosissima
H. L. Mason
1921-6-2
s.n.
San Mateo
Hill near Pebble Beach, Pescadero
Comment
CAS-BOT-BC319632
Hieracium albiflorum
H. L. Mason
1921-7-14
s.n.
San Mateo
Pescadero Creek
Comment
UC1093878
Hieracium horridum
Herbert L. Mason
1938-7-28
12036
Tuolumne
e of Tilden Lake; Sierra Nevada, Yosemite National Park, Macomb Ridge
2438
Comment
UC566693
Hieracium horridum
Herbert L. Mason
1923-7-21
634
Tuolumne
near Hetch Hetchy Dam site; Hetch Hetchy Ry.
Comment
RSA0016762
Hippuris vulgaris
H. L. Mason
1948-9-5
13670
Mono
Junction of Highway 108 and 395.
Comment
UC912636
Holcus lanatus
Herbert L. Mason
1925-7-31
2205
Tuolumne
Hog Ranch Mather (Mather)
Comment
CAS-BOT-BC412702
Hollisteria lanata
Herbert Mason
1940-5-4
12266
Merced
Ortigalita Canyon, 2 miles north east of Ortigalita Peak
304
Comment
CAS-BOT-BC412705
Hollisteria lanata
Herbert Mason
1940-5-4
12266
Merced
Ortigalita Canyon, 2 miles north east of Ortigalita Peak
304
Comment
SBBG61762
Hollisteria lanata
H. L. Mason
1940-5-4
12266
Merced
Ortigalita Cyn, 2 mi NE of Ortigalita Peak
304
Comment
UC965506
Hordeum brachyantherum subsp. brachyantherum
Herbert L. Mason
1952-7-19
14432
Nevada
meadow opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
Comment
UC1100316
Hordeum jubatum
Herbert L. Mason and S. Galen Smith
1948-7-30
8257
Merced
just n Ingomar
Comment
UCD85760
Hordeum jubatum
Herbert L. Mason
1947-8-9
13478
Modoc
E side of Fairchild Swamp, N of Alturas.
Comment
UC555296
Horkelia californica subsp. frondosa
H. L. Mason
1926-5-26
3244
Alameda
Niles Canyon
Comment
GH345648
Horkelia parryi
H. L. Mason
1928-5-3
4464
Unknown
One mile south of Ione
Comment
POM199446
Horkelia parryi
H. L. Mason
1932-4-24
6978
Amador
3 miles S of Ione
Comment
CAS-BOT-BC312530
Hulsea heterochroma
H. L. Mason
1934-9-9
8152
Monterey
Headwaters of Arroyo Seco, Santa Lucia Mountains
Comment
UC1101445
Hydrocotyle ranunculoides
Herbert L. Mason and Verne Grant
1946-7-24
12917
Marin
first lake s. Bear Valley (2.8 mi. n. of Lake Ranch)
Comment
UC672327
Hydrophyllum capitatum var. alpinum
H. L. Mason
1926-5-29
3302
Nevada
Truckee River
Comment
UC672324
Hydrophyllum occidentale
H. L. Mason
1936-5-16
11133
Madera
Chowchilla Mountain
Comment
UC1178027
Hymenoxys hoopesii
Herbert L. Mason and L. W. Reinecke
1937-7-31
14809
Tuolumne
Upper Huckleberry Meadow Sierra Nevada, Upper Huckleberry Meadow
2621
Comment
CAS-BOT-BC410235
Hypericum concinnum
H. L. Mason
1930-6-1
5676
Lake
St. Helena Creek, slopes of Mount St. Helena
Comment
UC570745
Hyptis emoryi
H. L. Mason
1928-3-10
4231
Riverside
Coachella Mountains Hidden Springs Canyon; , Hidden Springs Canyon
Comment
JEPS812
Ipomopsis aggregata
Herbert L. Mason
1924-6-15
1035
Plumas
Blairsden Feather River (near the junction of Graeagle creek and the Feather River)
Comment
UC908137
Ipomopsis aggregata
H. L. Mason
1932-9-9
7181
Placer
Carson Meadows
Comment
UC571174
Iris macrosiphon
H. L. Mason
1926-3-21
2762
Lake
between Middletown and Mt. St. Helena
Comment
UC1192315
Iris missouriensis
Herbert L. Mason
1949-5-30
Lassen
ne of Burney Falls
1524
Comment
CAS-BOT-BC133687
Iris munzii
H. L. Mason
1938-5-9
11810
Tulare
North Fork of the Tule River one mile below Milo
Comment
JEPS19119
Isocoma menziesii var. sedoides
Herbert L. Mason
1927-9-24
4086
Santa Barbara
West ranch Buena Vista Creek; Santa Cruz Island
Comment
UC912311
Isocoma menziesii var. sedoides
Herbert L. Mason
1929-10-13
5501
San Luis Obispo
2.5 mi n Cambria
Comment
YM-YOSE59273
Isoetes bolanderi
H. L. Mason
1938-7-9
11898
Tuolumne
SWAMP LAKE
Comment
CAS-BOT-BC112401
Isolepis carinata
Herbert L. Mason
1946-5-19
12783
Mendocino
Cleone Lake, north of Fort Bragg
Comment
UC1100839
Isolepis carinata
Herbert L. Mason
1946-5-19
12783
Mendocino
n Fort Bragg (Cleone Lake); n of Fort Bragg, Cleone Lake
Comment
UC1056960
Isolepis carinata
Herbert L. Mason
1940-5-22
12297
Mendocino
s Albion (coastal bluff); s of Albion
Comment
CAS-BOT-BC112628
Isolepis cernua
H. L. Mason
1921-6-2
s.n.
San Mateo
Pebble Beach, near Pescadero.
Comment
UC634682
Isomeris arborea
H. L. Mason
1930-4-20
5560
Kern
Caliente Creek; Tehachapi Mountains
Comment
UC635318
Isopyrum stipitatum
H. L. Mason
1929-3-15
5063
Alameda
18 mi s Livermore (Arroyo Mocho to Mount Hamilton); Arroyo Mocho to Mount Hamilton
Comment
UC635534
Isopyrum stipitatum
H. L. Mason
1927-3-20
3657
Alameda
e Cedar Mountain (Arroyo Mocho, Mount Hamilton Range); Mount Hamilton Range, e of Cedar Mountain, Arroyo Mocho
Comment
RSA85305
Isopyrum stipitatum
H. L. Mason
1927-3-20
657
Alameda
Arroyo Mocho, 17 miles S of Livermore
Comment
UC965561
Ivesia sericoleuca
Herbert L. Mason
1952-7-19
14412
Nevada
Sage Hen Creek Sierra Nevada (meadow opposite Univ. of Calif. Trout Laboratory)
1981
Comment
CAS-BOT-BC142372
Ivesia shockleyi
Herbert L. Mason
1936-7-28
11397
Mono
Dana Plateau, vicinity of Mount Dana - Sierra Nevada
3657
Comment
UC642653
Ivesia shockleyi var. shockleyi
H. L. Mason
1936-7-28
11398
Mono
vicinity Mount Dana (Dana Plateau); Sierra Nevada
3657
Comment
UC642920
Ivesia shockleyi var. shockleyi
H. L. Mason
1936-7-28
11397
Mono
vicinity Mount Dana (Dana Plateau); Sierra Nevada
3657
Comment
UC1100942
Juncus balticus
Herbert L. Mason and Malcolm A. Nobs
1949-4-27
725
Solano
Suisun State Game Refuge
Comment
POM312832
Juncus balticus subsp. ater
H. L. Mason, Verne Grant
1947-6-26
13248
Solano
Cordelia Slough, Suisun Marsh.
Comment
UC1179032
Juncus bolanderi
Herbert L. Mason
1929-8-24
5394
Mendocino
Pudding Creek Slough Fort Bragg
Comment
UC1179034
Juncus bolanderi
Herbert L. Mason
1932-7-24
7117
Marin
Inverness Ridge
Comment
UC1101045
Juncus bufonius
Herbert L. Mason
1949-7-7
14028
San Mateo
Mouth of Gazos Creek
Comment
UCD141389
Juncus bufonius
Herbert L. Mason; Verne Grant
1947-7-9
13287
Shasta
Highway 299, just east of Hatchet Creek Summit.
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
POM312826
Juncus effusus subsp. pacificus
H. L. Mason, Verne Grant
1946-8-21
13071
San Joaquin
Middle River bridge, Victoria Island.
Comment
UC1101031
Juncus hesperius
Herbert L. Mason
1946-7-24
12932
Marin
second lake s. Bear Valley (on rd. to Lake Ranch)
Comment
UC1101010
Juncus lescurii
Herbert L. Mason
1946-6-9
12874
San Luis Obispo
between Oceano and mouth of Santa Maria River; Dune Lakes
Comment
UC1101011
Juncus lescurii
Herbert L. Mason
1946-6-9
12873
San Luis Obispo
between Oceano and mouth of Santa Maria River; Dune Lakes
Comment
UC1101099
Juncus longistylis
Herbert L. Mason
1947-8-13
13534
Modoc
n of Canby (ne side of F reservoir)
Comment
UC1056296
Juncus macrandrus
Herbert L. Mason
1939-7-11
12113
Tuolumne
0.5 mi below Swamp Lake (s Tuolumne County); Yosemite National Park
1554
Comment
UC1102963
Juncus macrandrus
Herbert L. Mason
1958-8-6
Tuolumne
w side Hetch Hetchy Dam (meadow at Swamp Lake); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC1100955
Juncus mexicanus
Herbert L. Mason
1947-8-13
13536
Modoc
n of Canby (ne side of F reservoir)
Comment
UC1100995
Juncus nevadensis
Herbert L. Mason
1948-7-18
13612
Siskiyou
Grass Lake
Comment
UC965656
Juncus orthophyllus
Herbert L. Mason
1952-8-16
14467
Nevada
opposite Univesity of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC632746
Juncus triformis
H. L. Mason
1938-7-11
11939
Tuolumne
w of Hetch Hetchy; Yosemite National Park, Miguel Meadow
1584
Comment
UC1101101
Juncus xiphioides
Herbert L. Mason and S. Galen Smith
1948-8-19
8374
Merced
bridge below Snelling; San Joaquin River
Comment
UC1101108
Juncus xiphioides
Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith
1949-7-14
987
Fresno
2 mi w Clovis (on road to Cameo)
Comment
UC1083321
Juniperus californica
Herbert L. Mason
1925-12-31
2570
Lake
Bartlet Mt. Road
Comment
UC1051454
Justicia californica
Herbert L. Mason
1952-4-7
14212
Riverside
Palm Canyon
Comment
CAS-BOT-BC56382
Kalmia microphylla subsp. microphylla
Herbert L. Mason; L. W. Reinecke
1937-7-22
11585
Tuolumne
Swamp Lake, just south of Miguel Meadows in the hills just west of Hetch Hetchy
1584
Comment
GH365654
Keckiella antirrhinoides
H. L. Mason
1926-4-30
3142
Unknown
Pala Grade
Comment
UC565601
Keckiella breviflora
Herbert L. Mason
1925-6-24
2105
Tuolumne
Mather
1432
Comment
UC566678
Keckiella breviflora
H. L. Mason
1928-5-4
4493
El Dorado
near Latrobe (Swift Ranch)
Comment
UC1039511
Kelloggia galioides
H. L. Mason
1926-5-31
3356
Calaveras
1.2 mi sw Calaveras Big Trees (on old road)
Comment
UC1111593
Kelloggia galioides
Herbert L. Mason
1941-7-14
12523
Madera
Ottoway Lake; Sierra Nevada, Yosemite National Park
2987
Comment
UCD123830
Kickxia spuria
Herbert L. Mason; S. Galen Smith
1948-8-19
8365
Merced
about 2 miles northeast of Merced on Snelling highway.
Comment
GH360099
Koeleria cristata
H. L. Mason
1932-4-28
7051
Unknown
Laundry farm, Oakland Hills
Comment
CAS-BOT-BC499636
Kopsiopsis strobilacea
H. L. Mason
1927-5-11
s.n.
Nevada
You-Bet, near Grass Valley
Comment
UC1076550
Kumlienia hystricula
Herbert L. Mason
1936-3-14
10997
Calaveras
s of Sheep Ranch (San Antonio Creek); San Antonio Creek
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
UC571110
Larrea tridentata
Herbert L. Mason
1926-4-26
3007
Los Angeles
Little Rock Creek; Mojave Desert
Comment
SEINET10406507
Larrea tridentata
S. C. Mason
1908-1
Riverside
Palm Springs
Comment
UC632836
Lasthenia californica subsp. californica
H. L. Mason
1936-4-10
11051
Calaveras
field s Angels Camp
Comment
CAS-BOT-BC352919
Lasthenia glaberrima
H. L. Mason
1928-5-3
4474
Amador
Hills near Carbondale
Comment
UC566715
Lasthenia gracilis
Herbert L. Mason
1932-4-2
6898
Kern
3 mi w Muroc; Mojave Desert
Comment
RSA116657
Lasthenia macrantha subsp. macrantha
H. L. Mason
1921-6-1
s.n .
San Mateo
Pebble Beach near Pescadero
Comment
SFV16517
Lathyrus hirsutus
S. Mason, P. Rector
1993-4-16
s. n.
Orange
Santa Ana Mountains CA State Highway 74 at Lower San Juan Campground. Adjacent to campground sign on southeast side of road.
396
Comment
CAS-BOT-BC205028
Lathyrus jepsonii var. jepsonii
Herbert L. Mason
1945-7-12
12650
Solano
Suisun Marshes
Comment
UC673603
Lathyrus jepsonii var. jepsonii
Herbert L. Mason
1923-10-6
772
Solano
Suisun Marshes
Comment
UC673610
Lathyrus littoralis
Herbert L. Mason
1926-4-18
2863
San Francisco
San Francisco
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
UC673596
Lathyrus vestitus var. alefeldii
Herbert L. Mason
1926-4-30
3117 a
San Diego
Temecula to Pala; Temecula Canyon, Pala Grade
Comment
UC964776
Lathyrus vestitus var. vestitus
Herbert L. Mason
1928-5-6
4562
Alameda
Cedar Mountain
Comment
UC912574
Layia chrysanthemoides
Herbert L. Mason
1929-3-31
5151
Contra Costa
Sacramento River at Antioch; Sacramento River
Comment
UC912610
Layia glandulosa
Herbert L. Mason
1932-4-2
6900
Kern
3 mi w Muroc; Mojave Desert
Comment
UC912277
Layia septentrionalis
Herbert L. Mason
1929-4-29
5235
Lake
2.9 mi w Lakeport
Comment Read comments Jan 3 2018
UC571051
Ledum glandulosum
H. L. Mason
1928-8-25
4924
Mendocino
1 mi e of mouth of Noyo River
Comment
UC571053
Ledum glandulosum
H. L. Mason
1926-2-21
2657
Marin
on road from Point Reyes Light
Comment
LA202390
Lembertia congdonii
Herbert L. Mason;
1935-4-30
9315
Kern
5 mi. W of Bakersfield
Comment
UC1101273
Lemna aequinoctialis
Herbert L. Mason
1946-8-15
13009
Colusa
2 mi w on Williams Highway by bridge Colusa; Williams Highway
Comment
UC936136
Lemna minuscula
Herbert L. Mason
1946-7-24
12926
Marin
about 2.5 mi nw of Lake Ranch (e side of Drakes Bay); Drakes Bay
60
Comment
UC1101269
Lemna trisulca
Herbert L. Mason, Verne Grant
1947-7-12
13432
Modoc
n of Likely (Corportation Ranch Headquarters); Corportation Ranch Headquarters
Comment
CAS-BOT-BC245659
Lemna turionifera
H. L. Mason
1955-6-8
14630
Shasta
West edge of Fall River Mill
Comment
CAS-BOT-BC89135
Lepidium didymum
H. L. Mason
1921-5-29
s.n.
San Mateo
Pebble Beach near Pescadero.
Comment
UC673522
Lepidium lasiocarpum var. lasiocarpum
Herbert L. Mason
1928-3-11
4243
Riverside
near Indio
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
POM313213
Leptochloa fusca subsp. fascicularis
H. L. Mason
1945-9-19
12730
Butte
Gray Lodge Game Refuge, northwest of Pennington
Comment
UCD63845
Leptochloa fusca subsp. fascicularis
H. L. Mason
1945-9-19
12730
Butte
Gray Lodge Game Refuge, northwest of Pennington.
Comment
UC1186146
Leptodactylon pungens
Herbert L. Mason
1938-7-25
11999
Tuolumne
Deep Lake at e base Mahan Peak (Yosemite National Park); , Deep lake e base Mahan Peak
Comment
UC714170
Leptodactylon pungens
H. L. Mason
1936-7-28
11407
Mono
vicinity Mount Dana (Dana Plateau); Sierra Nevada, vicinity of Mount Dana, Dana Plateau
3505
Comment
UC908683
Leptodactylon pungens
Herbert L. Mason
1927-6-15
3785
San Bernardino
summit of Mt. Baldy San Gabriel Range, , Summit of Mt. Baldy (Mount San Antonio)
2133
Comment
CAS-BOT-BC226560
Leptosiphon acicularis
Herbert L. Mason
1929-4-29
5239
Lake
East base of road from Hopland to Lakeport, 2.9 miles west of Lakeport
Comment
SD44505
Leptosiphon aureus
Herbert L. Mason
1926-4-26
2945
Los Angeles
Pacoima Wash, foothills of San Gabriel Mountains.
Comment
SD45379
Leptosiphon aureus
Herbert L. Mason
1935-4-30
8348
Kern
West side of Walker Pass near summit.
Comment
POM264403
Leptosiphon montanus
H. L. Mason
1935-4-30
6262
Kern
Below Hobo Hot Springs, lower Kern River Canyon
Comment
UC908592
Leptosiphon nudatus
Herbert L. Mason
1929-6-2
5353
Kern
30 mi from Bakersfield; Tehachpai Mountains, Tejon Pass
Comment
RSA0103656
Leptosiphon parviflorus
H. L. Mason
1935-5-21
8315
San Mateo
Pebble Beach, Pescadero.
Comment
UC1093954
Lessingia micradenia var. glabrata
Herbert L. Mason
1936-9-13
11528
Santa Clara
w Madrone Station
Comment
UC912323
Lessingia virgata
Herbert L. Mason
1929-10-4
5448
Placer
on Folsom Road 3 mi s Roseville
Comment
CAS-BOT-BC56392
Leucothoe davisiae
Herbert L. Mason
1941-7-19
12526
Madera
Ottoway Creek northeast of Merced Pass Trail, Sierra Nevada, Yosemite National Park
2743
Comment
UC642674
Lewisia glandulosa
H. L. Mason
1936-7-23
11283
Tuolumne
alpine slopes of Mount Conness Sierra Nevada, Mount Conness
Comment
UC642828
Lewisia nevadensis
H. L. Mason
1926-5-30
3330
Placer
Kit Carson Pass
2621
Comment
UC642829
Lewisia pygmaea
H. L. Mason
1923-8-2
687
Tuolumne
e side of Unicorn Peak Sierra Nevada, Unicorn Peak
Comment
UC1056433
Lewisia pygmaea
Herbert L. Mason
1936-7-7
11167
Mariposa
Hetch Hetchy Trail w Dark Hole (Research Reserve); Sierra Nevada, Yosemite National Park
2438
Comment
UC1275799
Lewisia rediviva
Herbert L. Mason
1963-7-4
15226
Mono
ridge w Conway Summit
Comment
UC1056425
Lewisia triphylla
Herbert L. Mason
1936-7-15
11246
Tuolumne
1/2 mi w Mather; Sierra Nevada
1371
Comment
UC1056430
Lewisia triphylla
Herbert L. Mason
1936-7-6
11039
Mariposa
Yosemite Falls Trail Sierra Nevada, Yosemite National Park
2133
Comment
UC566843
Ligusticum apiifolium
Herbert L. Mason
1926-5-22
3220
Alameda
Berkeley Hills
Comment
UC1100162
Lilaea scilloides
Herbert L. Mason and S. Galen Smith
1948-8-9
8292
Santa Clara
just w of summit Pacheco Pass (small reservoir)
Comment
UC965619
Lilaea scilloides
Herbert L. Mason
1952-7-19
14445
Sierra
1.5 mi e Calpine (at junction of Calpine with Sierraville-Beckwourth road); Sierra Valley
1524
Comment
UC1100169
Lilaea scilloides
Herbert L. Mason
1948-6-10
13575
Mendocino
3 mi s Gualala (Highway 1)
Comment
UC673407
Lilium maritimum
Herbert L. Mason
Aug 1930
5739
Mendocino
Fort Bragg
Comment
UC673399
Lilium parvum
Herbert L. Mason
1925-6-29
2135
Tuolumne
Lake Eleanor; Sierra Nevada, Yosemite National Park
1432
Comment
UC635634
Limnanthes alba subsp. alba
H. L. Mason
1928-5-3
4456
San Joaquin
6 mi n Clement
Comment
UC971801
Limnanthes alba subsp. alba
Charles T. Mason Jr.
1948-5-13
1184
Sacramento
6 mi e Sacramento (ditch on s side of State Hwy 16)
30
Comment
UC971851
Limnanthes alba subsp. versicolor
Charles T. Mason Jr.
1948-5-13
1188
El Dorado
12 mi n Plymouth (along se side of State Hwy 49)
518
Comment
UC971853
Limnanthes alba subsp. versicolor
Charles T. Mason Jr.
1948-5-13
1189
El Dorado
12.7 mi n Plymouth (along se side of State Hwy 49)
518
Comment
SEINET6670265
Limnanthes alba var. alba
C. T. Mason
1949-4-23
1252
Butte
7 miles south of Oroville, along the east side of State Highway 24
Comment
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
CAS-BOT-BC45855
Limnanthes bakeri
Charles T. Mason, Jr.
1948-5-8
1181
Mendocino
0.6 mi. N. of Willits High School on east side of US Highway 101
426
Comment
UC971872
Limnanthes douglasii
Charles T. Mason Jr.
1948-4-24
1140
San Joaquin
about 10 mi ne Stockton (ditch on nw side of Hwy 88)
Comment
UC971870
Limnanthes douglasii subsp. douglasii
Charles T. Mason Jr.
1948-3-14
1123
Sonoma
0.3 mi n El Verano School (open field w side of road)
Comment
UC971874
Limnanthes douglasii subsp. douglasii
Charles T. Mason Jr.
1948-5-8
1182
Napa
Pope Valley
Comment
RSA435677
Limnanthes douglasii subsp. douglasii
H. L. Mason
1941-4-6
12415
Butte
Hills west of Cherokee.
Comment
SEINET6670448
Limnanthes douglasii subsp. douglasii
C. T. Mason
1948-3-14
1198
Marin
0.5 miles SE of junction of Petaluma-Point Reyes road with Fairfax-Nicasio Point Road
Comment
POM311121
Limnanthes douglasii subsp. nivea
C. T. Mason
1948-5-8
1177
Mendocino
Along U.S. Highway 101 about 8 miles north of Ukiah.
457
Comment
UC971791
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1949-3-31
1245
Merced
5 mi se Merced (along road to El Nido)
Comment
UC971793
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1949-3-31
1248
Merced
6 mi from U.S. Highway 99 (along road from Merced to Snelling)
Comment
UC971822
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1948-4-25
1160
Stanislaus
along State Hwy 4 about 1/8 mi w cross road to Milton and Knights Ferry
60
Comment
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
SEINET6670595
Limnanthes douglasii subsp. rosea
C. T. Mason
1948-4-25
1160
San Joaquin
Along state highway 4 about 1.8 mile west of cross-road to Milton and Knights Ferry
61
Comment
UC971817
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1948-3-27
1135
Solano
200 yd nw Rio Vista Junction overpass (along state hwy 12)
27
Comment
UC971820
Limnanthes douglasii subsp. rosea
Charles T. Mason Jr.
1948-3-27
1137
Solano
3 mi s Winters (along road to Vacaville)
30
Comment
SEINET4462872
Limnanthes douglasii var. sulphurea
H. L. Mason, A. M. Carter
1938-1
1413
Unknown
Comment
GH364863
Limnanthes floccosa
C. T. Mason, Jr.
1949-4-24
1256
Unknown
Nine miles N.W. Oroville on the north side of the Oroville-Chico road
Comment
UC971896
Limnanthes montana
Charles T. Mason Jr.
1949-5-9
1291
Mariposa
2 mi s Mt. Bullion
Comment
POM311128
Limnanthes montana
Charles T. Mason Jr.
1948-5-2
1173
Fresno
Big Sandy Valley, east side of Black Mountain, 4.2 miles from junction of Highway 168 and road to Aubrey.
579
Comment
UC566956
Limonium californicum
H. L. Mason
1928-9-2
4948
Alameda
Bay Farm Island
Comment
UC1101433
Limosella acaulis
Herbert L. Mason and S. Galen Smith
1948-8-9
8293
Santa Clara
just w summit Pacheco Pass; Pacheco Pass, just w of summit
Comment
UC1178836
Linanthus ambiguus
Herbert L. Mason
1940-5-3
12269
Merced
nw of Ortigalita Peak; South Coast Ranges, Ortigalita Valley
426
Comment
UC907987
Linanthus androsaceus
Herbert L. Mason
1924-4-20
901
Alameda
Berkeley Hills
Comment
UC907991
Linanthus androsaceus
Herbert L. Mason
1926-5-26
3234
Alameda
Niles Canyon
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
UC908797
Linanthus androsaceus
Herbert L. Mason
1928-4-8
4289
Sonoma
2 mi n Fort Ross
Comment
JEPS58167
Linanthus androsaceus
Herbert L. Mason
1924-5-4
1005
Alameda
s of Claremont Canyon; Berkeley Hills
Comment
UC907843
Linanthus androsaceus
Herbert L. Mason
1943-4-15
12564
Santa Clara
w side Pachaco Pass (border of Santa Clara-Merced Counties)
Comment
UC908562
Linanthus androsaceus
Herbert L. Mason
1930-3-30
5540
San Benito
14 mi below Pinnacles; San Benito River Canyon
Comment
SEINET8729325
Linanthus androsaceus subsp. croceus
Herbert L. Mason
1935-1
8315
San Mateo
Pebble Beach, Pescadero
Comment
SD46101
Linanthus arenicola
Herbert L. Mason
1952-4-11
14250
San Bernardino
Lava bed just east of Dagget.
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
UC754226
Linanthus bakeri
Herbert L. Mason
1932-4-25
7015
El Dorado
Pilot Hill; ; Pilot Hill, Eldorado Co.
Comment
UC907851
Linanthus bicolor
Herbert L. Mason
1934-3-28
8007
Kern
25 mi w Onyx (lower Kern River Canyon); Kern River Canyon
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
UC908558
Linanthus bicolor
Herbert L. Mason
1943-4-15
12562
Santa Clara
w side Pacheco Pass (border of Santa Clara and Merced Counties)
Comment
UC908802
Linanthus bigelovii
Herbert L. Mason
1935-4-30
8352
Kern
Walker Pass
Comment
UC971715
Linanthus bolanderi
Herbert L. Mason
1941-4-5
12404
Colusa
3 mi s Stonyford
Comment
POM264397
Linanthus californicus subsp. tomentosus
H. L. Mason
1941-3-28
12402
San Luis Obispo
North end of Nipomo mesa.
76
Comment
UC907827
Linanthus ciliatus
Herbert L. Mason
1941-7-7
12497
Madera
Buck Camp
Comment
UC908356
Linanthus ciliatus
H. L. Mason
1935-5-9
Stanislaus
Arroyo del Puerto Mount Hamilton Range, Red Mountains
Comment
UC963791
Linanthus ciliatus
Herbert L. Mason
Jul 7 1937-Jul 8 1937
12144
Nevada
3 mi w Donner Summit; Sierra Nevada
2072
Comment
SD45369
Linanthus concinnus
Herbert L. Mason
1927-6-15
3786
San Bernardino
Trail to summit of Mount Baldy (Mt. San Antonio), San Gabriel Mountains
2133
Comment
UC963793
Linanthus dianthiflorus
Herbert L. Mason
1926-5-1
3176
San Diego
n side Palomar Mountain; Oak Grove
Comment
UC908292
Linanthus dichotomus
Herbert L. Mason
1935-3-30
8253
San Luis Obispo
Cholame Valley
Comment
SEINET8729335
Linanthus dichotomus subsp. meridianus
Herbert L. Mason
1942-1
12540
Napa
Eight miles south of Pope Valley Store
Comment
UC907874
Linanthus filipes
Herbert L. Mason
1928-5-3
4469
Amador
near Carbondale
Comment
UC963761
Linanthus harknessii
Herbert L. Mason
1924-6-20
1084
Plumas
between Gold Lake and Bear Lake
Comment
UC908664
Linanthus jepsonii
Herbert L. Mason
1940-5-21
12293
Sonoma
Head of Maycama Creek Knights Valley
Comment
UC908781
Linanthus jepsonii
Herbert L. Mason
1928-4-13
4334
Sonoma
Reibli School, near springs
Comment
UC908783
Linanthus jepsonii
Herbert L. Mason
1928-4-13
4337
Sonoma
Reibli School
Comment
UC907889
Linanthus liniflorus
Herbert L. Mason
1949-4-23
14001
Kern
e of Bakersfield
Comment
UC908709
Linanthus liniflorus
Herbert L. Mason
1938-5-6
11765
Monterey
outside Jolon (at the junction of Indians Road)
Comment
UC908749
Linanthus montanus
Herbert L. Mason
1938-5-10
11817
Tulare
near Auckland Ranch (road sw of Badger); General Grant National Park
Comment
UC1191149
Linanthus parviflorus
Herbert L. Mason
1928-5-4
4482
El Dorado
4 mi n Shingle Springs; Green Valley
Comment
UC908616
Linanthus parviflorus
Herbert L. Mason
1926-4-26
2965
Los Angeles
Mint Canyon Road, summit of 1st grade
Comment
UC908800
Linanthus parviflorus
Herbert L. Mason
1932-4-28
7036
Monterey
Pajaro Hills
Comment
UC909079
Linanthus parviflorus
Herbert L. Mason
1932-7-24
7124
Marin
Point Reyes
Comment
UC908692
Linanthus parviflorus
Herbert L. Mason
1926-3-22
2790
Napa
along road from Calistoga to Petrified Forest (near Sonoma County line)
Comment
UC908626
Linanthus pygmaeus
Herbert L. Mason
1932-4-3
6918
Fresno
3 mi w Coalinga (on the Priest Valley road)
Comment
UC1101437
Lindernia dubia var. anagallidea
Herbert L. Mason and S. Galen Smith
1948-8-18
8351
Kings
canal just w Stratford; San Joaquin Valley
Comment
UC964732
Lindernia dubia var. anagallidea
Herbert L. Mason
1925-7-16
2175
Tuolumne
Mather
Comment
CAS-BOT-BC111997
Lipocarpha occidentalis
H. L. Mason
1937-7-21
11557
Tuolumne
Miguel Meadows
1645
Comment
UC632775
Lipocarpha occidentalis
H. L. Mason
1936-7-12
11216
Mariposa
along Merced River, Yosemite National Park, Yosemite Valley Merced River; Yosemite National Park, Yosemite Valley, Merced River
Comment
UC635726
Lipocarpha occidentalis
Herbert L. Mason
1937-7-21
11557
Tuolumne
Yosemite National Park, Miguel Meadows Miguel Meadows; Yosemite National Park, Miguel Meadows
1645
Comment
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
CAS-BOT-BC111994
Lipocarpha occidentalis
H. L. Mason
1938-7-13
11945
Mariposa
Meadow at base of El Capitan, Yosemite Valley
1226
Comment
SEINET10916076
Lipocarpha occidentalis
Herbert L. Mason
1938-7-13
Mason 11945
Mariposa
Meadow, base of El Capitan, Yosemite Valley. Yosemite National Park.
1227
Comment
UC673589
Listera convallarioides
H. L. Mason
July, 1930
5709
Calaveras
near Hermit Springs; Blue Creek, tributary of North Fork of Mokelumne River
Comment
UC1076088
Lithocarpus densiflorus
Herbert L. Mason
1928-7-14
4899
Humboldt
East Fork of Eel River East Fork of Eel River, Gaberville; Gaberville
Comment
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
UC1083185
Lithocarpus densiflorus
H. L. Mason
1928-10-21
5000
Mendocino
Fort Bragg
Comment
UC1093905
Lithocarpus densiflorus
Herbert L. Mason
1932-8-26
7160
Mendocino
Pine Barrens at Mendocino City; Mendocino City
Comment
UC1056431
Lithophragma glabrum
H. L. Mason
1936-7-27
11394
Tuolumne
Gaylor Lakes w Tioga Pass; Sierra Nevada, Yosemite National Park, Gaylor Lakes
3200
Comment
UC570873
Lithophragma glabrum
Herbert L. Mason
1926-5-30
3307
El Dorado
hills above Emerald Bay (Lake Tahoe); , hills above Emerald Bay
1981
Comment
UC909131
Loeseliastrum matthewsii
Herbert L. Mason
1926-4-27
3071
San Bernardino
n. Victorville
Comment
SD46099
Logfia depressa
Herbert L. Mason
1952-4-11
14252
San Bernardino
Black lava bed just east of Dagget.
Comment
UC581144
Logfia depressa
H. L. Mason
1935-3-29
8209
Kern
Red Rock Canyon Mojave Desert
Comment
CAS-BOT-BC342113
Logfia filaginoides
H. L. Mason
1932-5-4
7055
Alameda
Laundry Farm, Oakland Hills
Comment
UC1093864
Logfia filaginoides
Herbert L. Mason
1947-4-26
13206
Santa Cruz
near Felton; Mission Springs
Comment
UC1111576
Logfia filaginoides
Herbert L. Mason
1938-5-7
11782
Santa Barbara
Burton Mesa
Comment
UC673622
Logfia filaginoides
H. L. Mason
1933-4-30
7232
Lake
near Aetna Springs; Serpentine Ridge
Comment
UC672271
Logfia gallica
H. L. Mason
1932-5-4
7054
Alameda
Laundry Farm Oakland Hills, Laundry Farm
Comment
UC672273
Logfia gallica
H. L. Mason
1933-5-29
7246
El Dorado
Shingle Springs
Comment
UC672320
Logfia gallica
H. L. Mason
1932-5-25
Shasta
Hill above Redding
Comment
UC769968
Lomatium caruifolium var. denticulatum
Herbert L. Mason
1934-3-25
7944
Sacramento
Rio Linda, Keithly ranch Sacramento Valley, Rio Linda, Keithly ranch
Comment
UC985672
Lomatium dissectum var. multifidum
Herbert L. Mason and Verne Grant
1947-7-9
13311
Modoc
summit of Warner Range, Cedar Pass Warner Range, Cedar Pass
1920
Comment
UC1178993
Lomatium hooveri
Herbert L. Mason
1947-3-30
13164 a
Colusa
0.5 mi E of Lake Co. line on Williams-Lower Lake Highway western Colusa Co.
Comment
SEINET190370
Lomatium macrocarpum
Herbert L. Mason
1940-5-4
286
Merced
Piedra Azul Creek norhtwest of Ortigalita Peak Inner South Coast Ranges
305
Comment
RSA256499
Lomatium parvifolium
H. L. Mason, E. Lee
1935-2-9
9230
Monterey
Point Lobos State Park
Comment
UC566817
Lomatium utriculatum
H. L. Mason
1926-3-22
2786
Napa
from Calistoga to Petrified Forest
Comment
UC912447
Lonicera conjugialis
Herbert L. Mason
1923-7-20
623
Tuolumne
Ackerson Meadow Mather, Ackerson Creek
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
UC912444
Lonicera hispidula var. vacillans
Herbert L. Mason
1934-4-28
8080
Sonoma
Jensen's Ranch
Comment
UC555411
Lotus benthamii
H. L. Mason
1923-6-23
558
Monterey
Point Lobos
Comment
GH366505
Lotus formosissimus
H. L. Mason
1928-4-13
4308
Unknown
north of San Rafael
Comment
UC555404
Lotus heermannii
H. L. Mason
1931-11-1
5880
Monterey
road between Monterey and Carmel
Comment
UC632761
Lotus oblongifolius var. oblongifolius
H. L. Mason
1938-7-7
11864
Tuolumne
w of Hetch Hetchy; Sierra Nevada, Yosemite National Park, Miguel Meadow
1584
Comment
UC1191607
Lotus purshianus var. purshianus
Herbert L. Mason
1946-9-4
13106
Sutter
Colusa Gun Club Butte Sink
Comment
UC555536
Lotus purshianus var. purshianus
H. L. Mason
1925-7-2
2140
Tuolumne
Mather Sierra Nevada Mountains, Yosemite National Park
Comment
UC555524
Lotus stipularis var. ottleyi
Herbert L. Mason
1927-5-10
3711
Butte
ne of Oroville (Cherokee Mine); Table Mt.
Comment
UC1179050
Lotus strigosus
Herbert L. Mason
1938-4-14
11707
Tulare
4 mi e Exeter
Comment
UC555413
Lotus strigosus
H. L. Mason
1926-4-30
3115
Riverside
1 mi s Temecula; Temecula Canyon
Comment
UC1191767
Ludwigia peploides subsp. peploides
Herbert L. Mason and Verne Grant
1946-8-14
13019
Butte
canal near big pond on Sacramento Outing Club; Butte Sink, Sacramento Outing Club
Comment
CAS-BOT-BC201436
Lupinus albifrons var. albifrons
H. L. Mason
1917-3-10
54
Marin
Lake Temescal
Comment
UC1076229
Lupinus covillei
Herbert L. Mason
1923-8-2
706
Tuolumne
w Unicorn Creek (Yosemite National Park); Sierra Nevada, , w of Unicorn Creek
Comment
UC1039995
Lupinus lepidus var. confertus
Herbert L. Mason
1936-7-12
11223
Mariposa
Glacier Point road Peregoy Meadow (Yosemite National Park); Sierra Nevada, , Peregoy Meadow
2255
Comment
UC1076242
Lupinus microcarpus var. microcarpus
H. L. Mason
1928-5-6
4552
Alameda
Cedar Mt
Comment
JEPS65414
Lupinus peirsonii
Herbert L. Mason
1926-4-27
3026
Los Angeles
Rock Creek; San Gabriel Mts.; Rock Creek, San Gabriel Mts., Los Angeles Co.
Comment
UC965563
Lupinus polyphyllus var. burkei
Herbert L. Mason
1952-7-11
14326
Nevada
1 mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC632763
Lupinus rivularis
H. L. Mason
1938-7-28
12030
Tuolumne
Macomb Ridge e Tilden Lake; Yosemite National Park, Macomb Ridge e of Tilden Lake
3048
Comment Read comments Jul 19 2018
UC1081563
Lupinus truncatus
Herbert L. Mason
1936-3-7
10994
San Luis Obispo
2 mi w of Nipomo; Nipomo Mesa
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
UC1083104
Lycium andersonii
Herbert L. Mason
1932-4-2
6893
Kern
3 mi w Muroc; Mojave Desert
Comment
UC1083109
Lycium cooperi
Herbert L. Mason
1926-4-26
2969
Los Angeles
Mint Canyon Road, summit of 1st grade San Gabriel Mts.
Comment
UC1191830
Lycopus americanus
Herbert L. Mason
1945-9-18
12709
Sutter
near bridge on Yuba City-Knight's Landing Hwy. Sutter By-pass
Comment
UC1111565
Lycopus uniflorus
Herbert L. Mason
1938-8-1
12062
Tuolumne
Yosemite National Park, in Tiltill Valley, Rancheria Mountain Trail Tiltill Valley; Sierra Nevada, Yosemite National Park, Tiltill Valley
1828
Comment
UC555520
Lyonothamnus floribundus subsp. aspleniifolius
Herbert L. Mason
1937-9-25
4109
Santa Barbara
hills about Pelican Bay; Santa Cruz Island
Comment
UC1191565
Lythrum californicum
Herbert L. Mason, S. Galen Smith
1948-7-29
8234
Merced
about 4 mi n of Los Banos (just n of Delta Road, North Mercy Springs Road); North Mercy Springs Road
Comment
RSA0014830
Lythrum californicum
H. L. Mason, Verne Grant
1946-8-7
12977
Colusa
8 miles north of Colusa; Butte Sink.
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
UC635145
Lythrum hyssopifolia
H. L. Mason
1926-5-28
3257
El Dorado
between Shingle Springs and Coloma (Sierra Nevada Foothills, Rose Springs (now known locally as Allan's)); Sierra Nevada Foothills, Rose Springs
396
Comment
UCD102948
Lythrum tribracteatum
H. L. Mason
1945-7-11
12645
Colusa
Butte Lodge Outing Club, 3 miles above Colusa, near Butte Creek.
Comment
SEINET11601415
Madia glomerata
H. L. Mason
1952-7-19
14413
Nevada
Sierra Nevada, Sage Hen Creek, meadow opposite University of California Trout Laboratory
1981
Comment
UC1076267
Madia glomerata
Herbert L. Mason
1932-9-9
7176
Placer
Cisco
Comment
UC1191986
Madia glomerata
Herbert L. Mason
1947-8-9
13483
Modoc
n Alturas (e side of swamp); Fairchild Swamp
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
UC1191163
Malacothamnus fremontii
Herbert L. Mason
November 1931
5893
Monterey
s mi above Mission; Carmel River
Comment
UC565543
Malacothrix clevelandii
Herbert L. Mason
1926-5-1
3171
San Diego
Palomar Mt.
Comment
UC565510
Malacothrix floccifera
H. L. Mason
1928-7-14
4906
Humboldt
near Garberville; East Fork of Eel River
Comment
SEINET7881717
Malacothrix floccifera
H. L. Mason
1950-1
3355
Siskiyou
Scott River, Scott Valley between Fort Jones and Etna
914
Comment
UC1275794
Malacothrix glabrata
Herbert L. Mason
1963-6-24
15214
Mono
Paoha Island Mono Lake
Comment
JEPS36639
Malacothrix saxatilis var. arachnoidea
Herbert L. Mason
1928-10-3
4986
Monterey
4 mi above Mission; Carmel River
Comment
UC555510
Malus fusca
H. L. Mason
1932-7-21
7101
Humboldt
Big Lagoon
Comment
UC635683
Marah watsonii
H. L. Mason
1932-4-25
7004
Amador
road from Ione to Latrobe Cosumnes River Bridge
Comment
CAS-BOT-BC422686
Meconella californica
H. L. Mason
1928-2-22
4162
San Mateo
San Bruno Mountains
Comment
UC1056972
Meconella californica
Herbert L. Mason
1936-3-21
11038
Tuolumne
head of Moccasin Creek
Comment
UC635484
Meconella oregana
Herbert L. Mason
1927-4-16
3666
Contra Costa
Wild Cat Canyon Berkeley Hills
Comment
SEINET12190917
Melaleuca nesophila
E. Mason, Tebbett
1950-1
s.n.
Los Angeles
resort near Los Angeles
Comment
UC1110526
Melica aristata
Herbert L. Mason
1939-7-12
12130
Tuolumne
vicinity Swamp Lake (w of Hetch Hetchy Valley); Sierra Nevada Mtns, Yosemite National Park
1645
Comment
UC936196
Melica californica
H. L. Mason
1932-4-24
6983
Amador
3 mi s Ione
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
UCD88314
Melica stricta
H. L. Mason
1939-7-26
14827
Tuolumne
Mahan Peak, Yosemite National Park.
2438
Comment
UC912653
Melica torreyana
H. L. Mason
1926-5-26
3238
Alameda
Niles 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
UC1714384
Mentha canadensis
H. L. Mason
1929-8-24
5399
Mendocino
Pudding Creek Slough near Fort Bragg; Pudding Creek Slough near Fort Bragg
Comment
UC1714389
Mentha canadensis
H. L. Mason
1925-9-17
2226
Marin
in stream bed at e end Lake Lagunitas; e end of Lake Lagunitas
Comment
UC634874
Mentha canadensis
H. L. Mason
1929-8-24
5399
Mendocino
Pudding Creek Slough near Fort Bragg; near Fort Bragg, Pudding Creek Slough
Comment
UC634877
Mentha canadensis
H. L. Mason
1925-9-17
2226
Marin
in stream bed at e end Lake Lagunitas; e end of Lake Lagunitas
Comment
UC672668
Mentzelia affinis
H. L. Mason
1928-3-11
4241
Riverside
near Indio (desert flats)
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
UC1191590
Mentzelia dispersa
Herbert L. Mason, Verne Grant
1947-7-9
13317
Modoc
Summit of Warner Range, Cedar Pass
1920
Comment
UC672669
Mentzelia jonesii
H. L. Mason
1932-4-1
6871
Los Angeles
1 m e Lancaster; Mohave Desert
Comment
UC672665
Mentzelia micrantha
H. L. Mason
1928-4-29
4435
Contra Costa
Mount Diablo, Sycamore Canyon
Comment
UC673369
Mentzelia veatchiana
H. L. Mason
1930-4-20
5572
Kern
between Mohave Lancaster (Hills)
Comment
UC1191160
Menyanthes trifoliata
Herbert L. Mason
1937-7-24
14807
Tuolumne
n of Hetch Hetchy Valley (Yosemite National Park, Vernon Lake); Sierra Nevada, Yosemite National Park, Vernon Lake
2011
Comment
UC1191673
Menyanthes trifoliata
Herbert L. Mason
1938-7-10
11924
Tuolumne
w of Hetch Hetchy (south island in Swamp Lake, Yosemite National Park); Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
CAS-BOT-BC428955
Micranthes californica
H. L. Mason
1931-3-7
5807
Sonoma
Vine Hill School, 12 miles west of Santa Rosa
Comment
CAS-BOT-BC322611
Micropus amphibolus
H. L. Mason
1936-5-2
11098
Lake
Barlett Mountain Road, four miles above Lucerne
Comment
UC673617
Micropus amphibolus
H. L. Mason
1929-4-29
5247
Lake
2.9 mi w Lakeport (e base of road from Hopland to Lakeport)
Comment
CAS-BOT-BC348645
Micropus californicus var. californicus
H. L. Mason
1936-4-13
11090
Tuolumne
Italian Bar
Comment
UC581140
Micropus californicus var. californicus
H. L. Mason
1933-5-29
7247
El Dorado
Shingle Springs
Comment
UC672239
Micropus californicus var. californicus
Herbert L. Mason
1933-4-30
7229
Lake
near Aetna Springs
Comment
UC672244
Micropus californicus var. californicus
Herbert L. Mason
1932-4-17
6957
Santa Clara
near summit Pacheco Pass
Comment
UC672250
Micropus californicus var. californicus
Herbert L. Mason
1932-4-25
7016
El Dorado
Pilot Hill Sierra Nevada foothills
Comment
UC673614
Micropus californicus var. californicus
Herbert L. Mason
1932-4-17
6936
Santa Clara
hill 1 mi e New Almaden
Comment
UC964767
Micropus californicus var. californicus
Herbert L. Mason
1938-4-14
11705
Tulare
Rocky Hill 4 mi e Exeter; Rocky Hill, e of Exeter
Comment
CAS-BOT-BC348410
Micropus californicus var. californicus
H. L. Mason
1932-4-17
6936
Santa Clara
Hill, one mile east of New Almaden
Comment
UC672238
Micropus californicus var. californicus
H. L. Mason
1933-4-21
7189
Santa Clara
Hendrick's Road
Comment
UC672252
Micropus californicus var. californicus
H. L. Mason
1933-5-28
7236
Placer
Tahoe-Colfax road three to four mi Colfax
Comment
UC565499
Microseris douglasii subsp. douglasii
H. L. Mason
1929-3-31
5142
Contra Costa
Briones Valley
Comment
SEINET196201
Microsteris gracilis
H. L. Mason
1926-5-29
3292
Nevada
Crystal Lake 3 mi W of Cisco
1768
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
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
UC1040000
Mimulus layneae
Herbert L. Mason
1937-7-21
11559
Tuolumne
n Hetch Hetchy; Sierra Nevada, Yosemite National Park, Miguel Meadows
Comment
UC1039602
Mimulus moniliformis
Herbert L. Mason
1940-7-25
12336
Alpine
hills n Kit Carson Pass
2682
Comment
UC1275792
Mimulus nanus var. mephiticus
Herbert L. Mason
1963-6-24
15209
Mono
Paoha Island Mono Lake
Comment
UC632782
Mimulus tilingii
H. L. Mason
1936-7-7
11159
Mariposa
Hetch-Hetchy Trail w Dark Hole; Yosemite National Park, Research Reserve
2438
Comment
UC1178809
Mimulus torreyi
Herbert L. Mason
1939-7-8
12165
El Dorado
Fallen Leaf Lake; ne end
1950
Comment
UC632793
Mimulus torreyi
H. L. Mason
1936-5-16
11127
Madera
Chowchilla Mountain
Comment
UC1076480
Minuartia douglasii
Herbert L. Mason
1927-6-11
3741
Los Angeles
Mount Wilson San Gabriel Mountains
1524
Comment
UC936172
Minuartia obtusiloba
Herbert L. Mason
1936-7-24
11320
Tuolumne
White Mountain Yosemite National Park, Conness Range.
Comment
UC936166
Minuartia rubella
H. L. Mason
1936-7-23
11299
Tuolumne
Alpine Slopes Mount Conness
Comment
JEPS22418
Mitella diversifolia
Herbert L. Mason
1948-7-17
13593
Shasta
along US Highway 299 just e Hatchet Mtn summit; just e of Hatchet Mtn summit
Comment
UC634841
Modiola caroliniana
Herbert L. Mason
1926-5-15
3211
Alameda
U. C. Campus, Berkeley
Comment
UC673536
Mohavea confertiflora
H. L. Mason
1928-3-10
4246
Riverside
Road from Indio to Palm Springs
Comment
UC2035859
Monardella odoratissima subsp. glauca
H. L. Mason
1924-6-16
1043
Plumas
South banks of Feather River, near Graeagle.
Comment
SEINET4173657
Monardella undulata
Herbert L. Mason, Annetta M. Carter
1938-5-18
1417
Marin
Point Reyes Peninsula, 12 miles from Inverness
Comment
UC634925
Monardella undulata subsp. crispa
H. L. Mason
1923-6-15
426
Santa Barbara
Near Surf
Comment
UC1191419
Monolepis nuttalliana
Herbert L. Mason and Verne Grant
1947-7-10
13339
Modoc
2 mi. e. Alturas (Dorris Reservoir); Dorris Reservoir
Comment
CAS-BOT-BC327817
Monolopia congdonii
Herbert L. Mason
1935-4-30
9315
Kern
5 mi W of Bakersfield
Comment
SEINET10669043
Monolopia congdonii
Herbert L. Mason
1935-1
Kern
Comment
JEPS35213
Monolopia major
H. L. Mason
1932-3-20
Alameda
plain e Mountain House (about 13 mi ne of Livermore)
Comment
CAS-BOT-BC349652
Monolopia stricta
Herbert Mason
1940-3-24
12252
Fresno
Four miles south of Firebaugh
Comment
UCR64592
Monolopia stricta
H. L. Mason
1940-3-24
12252
Fresno
4 mi south of Firebaugh
51
Comment
SBBG61103
Monolopia stricta
H. L. Mason
1940-3-24
12252
Fresno
ca. 4 mi S of Firebaugh
Comment
SEINET10801702
Monolopia stricta
Herbert L. Mason
1940-3-24
Mason 12252
Fresno
Four miles south of Firebaugh.
Comment
SEINET7545198
Monolopia stricta
H. L. Mason
1935-1
9314
Kern
2 mi. West of Lost Hills, northwestern Kern County
Comment
UC672207
Monoptilon bellioides
H. L. Mason
1928-3-10
4245
Riverside
road from Indio to Palm Springs
Comment
UC1056974
Montia chamissoi
Herbert L. Mason
1936-7-27
11384
Tuolumne
Gaylor Lakes w of Tioga Pass (Yosemite National Park); Sierra Nevada, , Gaylor Lakes
3200
Comment
UC635329
Montia chamissoi
H. L. Mason
1923-8-7
721
Tuolumne
Dana Fork of Tuolumne River, Yosemite National Park Tuolumne River; Sierra Nevada Mountains, Yosemite National Park, Tuolumne Ri
Comment
CAS-BOT-BC445198
Montia parvifolia
H. L. Mason
1921-7-1
s.n.
San Mateo
Pescadero Creek
Comment
CAS-BOT-BC109004
Mucronea californica
H. L. Mason
1923-6-23
553
Monterey
Carmel River, ten miles above Carmel.
Comment
CAS-BOT-BC247571
Muhlenbergia asperifolia
Herbert Louis Mason
1947-8-15
13542
Modoc
Mouth of Crane Creek on Willow Ranch.
Comment
SACT001578
Muhlenbergia asperifolia
Herbert Mason
1947-8-15
Modoc
Mouth of creek on Willow Ranch, east of Goose Lake.
Comment Read comments Aug 21 2013
UC1105286
Muhlenbergia filiformis
Herbert L. Mason
1938-7-10
11911
Tuolumne
w Hetch Hetchy; Sierra Nevada, Yosemite National Park, Swamp Lake, South Isl
1645
Comment
UC965497
Muhlenbergia filiformis
Herbert L. Mason
1952-7-10
14312
Nevada
old drained spagnum bog in meadow one mi w University of California Trout Laboratory; Sage Hen Creek
1981
Comment
YM-YOSE66978
Muhlenbergia filiformis
H. L. Mason
1938-7-10
11911
Tuolumne
SWAMP LAKE RESEARCH RESERVE. SOUTH ISLAND. SWAMP LAKE
Comment
UC1108828
Muhlenbergia montana
Herbert L. Mason
1938-7-22
11972
Tuolumne
Vernon Lake Trail n Hetch Hetchy Valley; Sierra Nevada, Yosemite National Park
1981
Comment
UC1101592
Muhlenbergia richardsonis
Herbert L. Mason
1947-8-8
13467
Modoc
sw margin of reservoir nw Alturas; Big Sage Reservoir
Comment
UC1111012
Muhlenbergia rigens
Herbert L. Mason
1930-10-25
5746
Monterey
Headwaters of the Arroyo Seco Santa Lucia Mountains
Comment
UC1093652
Muilla coronata
Herbert L. Mason
1952-4-11
14259
San Bernardino
flats 1/4 mi n Kramer
Comment
UC1083343
Muilla maritima
Herbert L. Mason
1926-4-26
2946
Los Angeles
Pocoima Wash foothills of San Gabriel Mountains
Comment
UC1083347
Muilla maritima
Herbert L. Mason
1931-3-1
5795
Alameda
Cow Hollow
Comment
UC1101360
Myosurus apetalus
Herbert L. Mason
1953-6-16
14551
Sierra
1 mi s Beckwourth Buttes
Comment
UC1112279
Myosurus apetalus
Herbert L. Mason
1952-7-11
14339
Nevada
Sage Hen Creek, 1 mi w of University of California Trout Laboratory Sage Hen Creek; Sierra Nevada
1981
Comment
CAS-BOT-BC392264
Myosurus apetalus
Herbert L. Mason
1953-6-16
14554
Plumas
Two miles east of Beckwourth
Comment
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
CAS-BOT-BC83287
Myosurus minimus
Herbert L. Mason
1952-4-14
14263
Contra Costa
3.5 miles south of Byron.
Comment
CAS-BOT-BC83382
Myosurus minimus
Herbert L. Mason
1952-4-26
14275
Stanislaus
3 miles east of the San Joaquin River, Hilmar Road near Crows Landing Road.
Comment
UC1101336
Myosurus minimus
Herbert L. Mason
1952-4-26
14275 a
Stanislaus
3 mi e of San Joaquin River (Hilmar Road near 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
UC1101344
Myosurus minimus
Herbert L. Mason
1953-4-4
14504
Lake
playa n of Lower Lake (Mannings Flat); Mannings Flat
Comment
UC1738079
Myosurus minimus
H. L. Mason
1956-4-30
14274 A-3
Stanislaus
5 mi NE of Crows Landing ( on Crows Landing Rd.)
Comment
UC1738085
Myosurus minimus
H. L. Mason
1957-3-22
14268 B-6
Contra Costa
3 mi S of Byron ( on road to Herdlyn)
Comment
CAS-BOT-BC83383
Myosurus minimus
Herbert L. Mason
1952-5-18
14288
Stanislaus
On Hilmar Road, east of the San Joaquin River about 1 mile from the junction with the Crows Landing Road.
Comment
POM312425
Myosurus minimus
H. L. Mason
1953-4-2
14502
Fresno
5 miles Sof Kerman, Fresno County
Comment
POM312433
Myosurus minimus
H. L. Mason
1952-5-18
14288
Stanislaus
Near abandoned gas well,Hilmar Road east of the San Joaquin River about 1 mile from the jct. with the Crows Landing Road
Comment
UC634963
Myosurus minimus
H. L. Mason
1933-5-28
7240
Placer
Tahoe Meadows
Comment
UCD96309
Myosurus minimus
Herbet L. Mason
1952-5-18
14290
Stanislaus
on Hilmar road, east of the San Joaquin River about 1 mile from the junction with the Crows Landing road, near abandoned gas well.
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
UC1101349
Myosurus minimus subsp. apus
Herbert L. Mason
1953-4-5
14510 a
Colusa
3 mi e of Maxwell
Comment
POM312431
Myosurus minimus subsp. apus
H. L. Mason
1952-5-18
14290
Stanislaus
Near abandoned gas well,Hilmar Road east of the San Joaquin River about 1 mile from the jct. with the Crows Landing Road
Comment
POM312430
Myosurus minimus var. filiformis
H. L. Mason
1952-4-26
14274
Stanislaus
3 miles east of the San Joaquin River; Hilmar Road near Crows Landing Road
Comment
POM312437
Myosurus sessilis
H. L. Mason
1953-4-5
14510
Colusa
3 miles east of Maxwell
Comment
POM312445
Myosurus sessilis
H. L. Mason
1953-4-5
14508
Colusa
3 miles east of Maxwell
Comment
UCD96287
Myosurus sessilis
H. L. Mason
1952-4-14
14264
Contra Costa
3.5 miles south of Byron.
Comment
UC672604
Myrica californica
Herbert L. Mason
1924-10-12
1113
Marin
s.e. slope Mt. Tamalpais
Comment
UC672611
Myrica californica
Herbert L. Mason
1928-7-11
4893
Sonoma
canyon 2 mi. n. Fort Ross
Comment
LA205964
Myrica hartwegii
Herbert L. Mason;
1936-7-11
11209
Mariposa
Big Creek, a tributary of the South Fork of the Merced River, near Wawona
1402
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
UC1191973
Myriophyllum aquaticum
Herbert L. Mason and S. Galen Smith
1948-7-28
8231
Merced
Dos Palos
Comment
UC1101492
Myriophyllum hippuroides
Herbert L. Mason and S. Galen Smith
1948-7-27
8225
Merced
W of salt slough, N of Los Banos, on Delta Road.
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
POM312985
Najas graminea
H. L. Mason, Verne Grant
1946-8-15
13047
Butte
#833 Irrigation Ditch, near caretaker s house, Greylodge Game Refuge, Butte Sink.
Comment
UC1100010
Najas guadalupensis
Herbert L. Mason, Verne Grant
1946-9-12
13128
San Joaquin
near Dagget Road (Roberts Island, Borden Highway, s of main ditch); Roberts Island, Borden Highway
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
UCD138159
Najas guadalupensis subsp. 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
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
UC1051484
Nama pusilla
Herbert L. Mason
1952-4-11
14255
San Bernardino
Black lavas n of Pisgah Crater; Black lavas
Comment
UC1101059
Narthecium californicum
Herbert L. Mason
1950-7-15
14053
Trinity
summit of grade Scott Mt.
Comment
UC769986
Nassella pulchra
Herbert L. Mason
1934-3-25
7969
Sacramento
Keithly Ranch Sacramento Valley, Rio Linda
Comment
CAS-BOT-BC60413
Nasturtium officinale
Herbert L. Mason
1941-5-24
12424
Marin
Tomales Point, one mile west of Indian Beach.
91
Comment
SEINET8159127
Nasturtium officinale
H. L. Mason
1941-1
12424
Unknown
Comment
UC1199830
Navarretia atractyloides
Herbert L. Mason
1946-6-8
12844
Santa Barbara
s side Big Pine Mountain (Bluff Camp)
Comment
UC907793
Navarretia atractyloides
Herbert L. Mason
1945-6-28
12591
Lake
e of Middletown (just below the bridge)
Comment
UC909056
Navarretia atractyloides
Herbert L. Mason
1927-7-31
3998
Santa Cruz
hills s Mt. Herman
Comment
UC963801
Navarretia capillaris
Herbert L. Mason
Jul 7 1939-Jul 8 1939
12156
Nevada
three mi w Donner Summit; w of Donner Summit
2072
Comment
UC907877
Navarretia capillaris
Herbert L. Mason
1932-9-9
7184
Calaveras
w Ebbett's Pass (Sierra Nevada); , w of Ebbett's Pass
Comment
CAS-BOT-BC230276
Navarretia cotulifolia
Herbert L. Mason
1945-5-12
12578
Lake
E of Middletown, Locomono Creek
Comment
UC963810
Navarretia cotulifolia
H. L. Mason
1933-4-30
7223
Napa
n of Aetna Springs (near Napa-Lake county line); Inner North Coast Range
Comment
UCD48351
Navarretia cotulifolia
H. L. Mason
1945-5-12
12578
Lake
Meadow east of Middletown, Locomono Creek, Lake County, California.
Comment
UC963763
Navarretia divaricata
Herbert L. Mason
1925-6-25
2112
Tuolumne
Hog Ranch Mather
1432
Comment
UC9637755
Navarretia divaricata
Herbert L. Mason
Jul 7 1939-Jul 8 1939
12150
Nevada
3 mi w Donner Summit
2072
Comment
UC965531
Navarretia divaricata
Herbert L. Mason
1952-8-16
14463
Nevada
opposite Univ. of Calif. Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
YM-YOSE65334
Navarretia divaricata
Harry L. Mason
1938-7-6
11860
Tuolumne
RIDGE BETWEEN SWAMP LAKE AND MIGUEL MEADOW
1676
Comment
UCD39812
Navarretia divaricata
Herbert L. Mason
1924-6-20
1087
Plumas
Near Gold Lake on trail from Gold Lake to Graeagle camp.
Comment
SBBG58271
Navarretia hamata
H. L. Mason
1941-7-21
12471
Santa Barbara
mesa S of Casmalia
Comment
SEINET200255
Navarretia heterandra
Herbert L. Mason
1953-6-8
14526
Lake
Locomono Meadow, north of Middletown
Comment
UC908145
Navarretia intertexta
H. L. Mason
1933-5-29
8243
El Dorado
Shingle Springs, Sierra Nevada foothills Sierra Nevada
Comment
UC909093
Navarretia intertexta
Herbert L. Mason
1940-5-21
12295
Sonoma
Head of Mayacama Creek Knights Valley
Comment
UC908428
Navarretia intertexta
Herbert L. Mason
1945-6-29
12613
Lake
wash of Kelsey Creek Kelsey Creek
Comment
UCD48477
Navarretia intertexta
H. L. Mason
1926-5-28
3260
El Dorado
Rose Springs (Eggers), between Shingle Springs and Coloma, Sierra Nevada foothills, El Dorado County.
396
Comment
UC965528
Navarretia intertexta subsp. propinqua
Herbert L. Mason
1952-7-19
14444
Sierra
1.5 mi e Calpine (at junction of Calpine with Sierraville-Beckwourth road); Sierra Nevada, Sierra Valley
1524
Comment
UC965533
Navarretia intertexta subsp. propinqua
Herbert L. Mason
1952-8-16
14476
Nevada
opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC1199837
Navarretia intertexta subsp. propinqua
Herbert L. Mason
1946-7-13
13445
Modoc
s of Goose Lake (near Highway 395); Joseph Creek
Comment
UC965525
Navarretia intertexta subsp. propinqua
Herbert L. Mason
1952-7-17
14377
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
UC908634
Navarretia jepsonii
Herbert L. Mason
1946-5-30
12792
Lake
near Middletown; Locomono Creek
Comment
UC971993
Navarretia jepsonii
Herbert L. Mason
1952-6-19
14307
Colusa
Black Diamond Ridge Mendocino National Forest
609
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
UC963803
Navarretia leucocephala subsp. minima
Herbert L. Mason
1945-6-28
12599
Lake
Excelsior Valley
Comment
UC965529
Navarretia leucocephala subsp. minima
Herbert L. Mason
1952-7-19
14442
Sierra
1.5 mi e Calpine (at junction of Calpine with Sierra Beckwourth road); Sierra Nevada, Sierra Valley
1524
Comment
UC700271
Navarretia leucocephala subsp. pauciflora
H. L. Mason
1945-5-12
12583
Lake
5 mi n Lower Lake; ; 5 mi. N of Lower Lake, Lake Co.
Comment
UCD48598
Navarretia leucocephala subsp. pauciflora
H. L. Mason
1945-5-12
12584
Lake
In beds of vernal pools, 3 miles north of Lower Lake, Lake County, California.
Comment
UC700273
Navarretia leucocephala subsp. plieantha
H. L. Mason
1945-6-29
12628
Lake
Boggs Lake Mt. Hannah (nw slope of mt.); Boggs Lake, NW slope of Mt. Hannah, Lake Co.
Comment
UC1191635
Navarretia linearifolia subsp. linearifolia
Herbert L. Mason
1947-8-8
13455
Modoc
nw Alturas (Ingalls Swamp); n of Big Sage Reservoir, Ingalls Swamp
Comment
UC908262
Navarretia linearifolia subsp. pinnatisecta
Herbert L. Mason
1945-6-29
12612
Lake
near Kelseyville; wash of Kelsey Creek, near Kelseyville
Comment
SEINET197696
Navarretia minima
Herbert L. Mason
1952-7-19
14442
Sierra
1.5 miles of Calpine at junction of Calpine with Sierraville-Beckworth road.
1524
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
SEINET200246
Navarretia pauciflora
Herbert L. Mason
1953-6-8
14534
Lake
Meadow west of Boggs Lake.
Comment
SEINET200248
Navarretia propinqua
Herbert L. Mason
1946-7-13
13449
Modoc
West end of Fandango Pass near Goose Lake on road to Fort Bidwell.
Comment
SEINET8729372
Navarretia propinqua
Herbert L. Mason
1952-1
14443
Sierra
1.5 miles east of Calpine at junction of Calpine with Sierraville-Beckwourth road. Sierra Valley
1524
Comment
CAS-BOT-BC232653
Navarretia pubescens
Herbert L. Mason
1945-5-12
12579
Lake
Locomono Creek, E of Middletown
Comment
SEINET190450
Navarretia pubescens
Herbert L. Mason
1940-5-3
12271
Merced
Piedra Azul Creek, MW of Ortigalita Peak.
305
Comment
UC908164
Navarretia pubescens
Herbert L. Mason
1935-5-30
8330
Lake
between Knoxville mine and Lower Lake
Comment
UCD59448
Navarretia pubescens
Herbert L. Mason
1935-5-30
8330
Lake
Between Lower Lake and Knoxville mine.
Comment
UC1178926
Navarretia tagetina
Herbert L. Mason
1953-6-8
14528
Lake
n of Middletown; Locomono Meadow
Comment
UC908083
Navarretia tagetina
Herbert L. Mason
1934-4-30
8110
Napa
tributary of Putah Creek Pope Valley, Putah Creek
Comment
UCD48635
Navarretia tagetina
Herbert L. Mason
1934-4-30
8110
Napa
Talus soil along road, tributary of Putah Creek, Pope Valley, Napa County, California.
Comment
UC1111588
Navarretia viscidula
Herbert L. Mason
1947-5-18
14791
Tehama
w of Paskenta (base of Paskenta Grade); Paskenta Grade
Comment
UCD39810
Navarretia vividior
Herbert L. Mason
1941-7-12
12480 a
Tuolumne
Yosemite National Park, Miguel Meadows.
1889
Comment Read comments Aug 18 2015
UC632801
Nemacladus interior
H. L. Mason
1936-7-11
11198
Mariposa
Wawona
1249
Comment
UC635583
Nemacladus interior
H. L. Mason
1923-7-12
577
Tuolumne
Mather; Sierra Nevada Mountains, Yosemite National Park
Comment
SEINET10458402
Nemacladus longiflorus
Mason
1926-4-30
Mason 3145
San Diego
Oak Grove
853
Comment
UC635592
Nemacladus longiflorus var. longiflorus
H. L. Mason
April 1926
3177 a
San Diego
Oak Grove
Comment
UCD126389
Nemacladus montanus
Herbert L. Mason
1935-5-30
s.n.
Napa
4 miles north of Knoxville Mines.
Comment
SEINET3815125
Nemacladus ramosissimus
Herbert L. Mason
1935-4-30
8281 b
San Bernardino
Poison Canyon
Comment
SEINET10461043
Nemacladus ramosissimus
Mason
1935-4-30
Mason 8281 b
San Bernardino
Poison Canyon
Comment
UC1179026
Nemacladus rubescens
Herbert L. Mason
1935-4-30
8281 c
San Bernardino
Head of Poison Canyon
Comment
UC595052
Nemophila parviflora
H. L. Mason
1938-5-1
11746
Lake
Bartlett Springs
Comment
UC592127
Nemophila pedunculata
H. L. Mason
1929-3-15
5070
Santa Clara
San Antonio Valley Mount Hamilton Range, San Antonio Valley
Comment
UC595054
Nemophila pedunculata
H. L. Mason
1938-5-1
11744
Lake
Barlett Springs Bartlett Springs
Comment
UC632810
Nemophila pedunculata
H. L. Mason
1936-3-20
11010
Tuolumne
three mi above Tuolumne; above Tuolumne
Comment
UC595050
Nemophila spatulata
H. L. Mason
1938-7-15
11959
Tuolumne
Tamarack Flat , Tamarack Flat (Yosemite National Park)
1950
Comment
YM-YOSE65374
Nemophila spatulata
Harry L. Mason
1938-7-11
11941
Tuolumne
MIGUEL MEADOW
1584
Comment
UC965518
Neoholmgrenia andina
Herbert L. Mason
1952-7-11
14333
Nevada
one mi w University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC570708
Nicotiana quadrivalvis
Herbert L. Mason
1926-4-30
3147
San Diego
Oak Grove Palomar Mt. (base of Palomar Mt)
Comment
UC570709
Nicotiana quadrivalvis
H. L. Mason
1928-10-2
4974
Monterey
1 mi below Salinas (Salinas River); Salinas River
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
UC672086
Odontostomum hartwegii
Herbert L. Mason
1934-4-30
8102
Napa
w. side near summit Wooden Valley Grade
Comment
UC673620
Odontostomum hartwegii
Herbert L. Mason
1928-5-4
4517
El Dorado
between Green Valley and Eggars
Comment
UC555685
Oemleria cerasiformis
H. L. Mason
1923-6-22
533
San Luis Obispo
Summit Cuesta Grade
Comment
UC1191943
Oenanthe sarmentosa
Herbert L. Mason
1945-8-16
12657
Solano
Grizzly Island near Suisun Bay; Grizzly Island
Comment
UC635276
Oenothera californica subsp. californica
H. L. Mason
1926-5-1
3180
San Diego
Oak Grove
Comment
UC634687
Oenothera primiveris subsp. primiveris
H. L. Mason
1926-4-27
3074
San Bernardino
near Victorville
Comment
UC1178895
Olsynium douglasii var. douglasii
Herbert L. Mason
1949-4-16
13993
Modoc
mesa e Alturas
Comment
CAS-BOT-BC349971
Oreostemma alpigenum var. andersonii
Herbert L. Mason
1941-7-7
12510
Madera
Sierra Nevada, Yosemite National Park. Just south of the Givens Lake trail junction
2865
Comment
UC672295
Oreostemma alpigenum var. andersonii
H. L. Mason
1923-7-28
654
Tuolumne
White Wolf, Mather to Tuolumne Meadows (Tioga Pass Rd) Sierra Nevada Mts, Yosemite National Park
2438
Comment
UC912304
Oreostemma alpigenum var. andersonii
Herbert L. Mason
1933-9-2
7269
Amador
Silver Lake Sierra Nevada Mountains
Comment
UC965584
Oreostemma alpigenum var. andersonii
Herbert L. Mason
1952-7-11
14322
Nevada
1 mi w University of California Trout Laboratory; Sage Hen Creek
1981
Comment
UC1076295
Orobanche bulbosa
Herbert L. Mason
1923-6-19
518
Ventura
above Ojai (Topatopa Mountains, Horn Canyon); Topatopa Mountains, Horn Canyon
Comment
SEINET199760
Orobanche californica subsp. californica
Herbert L. Mason
1927-7-28
3983
San Mateo
Pigeon Point
Comment
UC1199810
Orobanche corymbosa subsp. corymbosa
Herbert L. Mason
1957-7-5
14715
Lassen
Madeline Plains (town south of Madeline)
Comment
UC1076301
Orobanche fasciculata
Herbert L. Mason
1926-5-7
2704
Contra Costa
Near Summit of Mount Diablo.
Comment
UC1076307
Orobanche fasciculata
Herbert L. Mason
1934-5-5
8115
Lake
Plain southwest of Mount Konocti.
Comment
UC723026
Orobanche fasciculata
Herbert L. Mason
1935-5-9
Stanislaus
Red Mountains, Arroyo del Puerto, Mount Hamilton.
Comment
RSA0087777
Orobanche fasciculata
Herbert L. Mason
1936-5-2
11099
Lake
Four miles above Lucerne.
Comment
UC1076303
Orobanche fasciculata
Herbert L. Mason
1926-5-28
1029
Tuolumne
Near bottom of Tuolumne Canyon, Mather.
Comment
JEPS19479
Orobanche vallicola
Herbert L. Mason
1929-9-21
5432
Contra Costa
3 mi. above Clayton (Marsh Creek Rd.)
Comment
JEPS38558
Osmadenia tenella
H. L. Mason
1926-4-25
Orange
Laguna
Comment
UC571124
Oxalis albicans subsp. pilosa
Herbert L. Mason
1927-4-23
3677 a
San Mateo
between La Honda and Pescadero Summit of rd
Comment
UC634782
Oxypolis occidentalis
H. L. Mason
1925-8-6
2208
Tuolumne
near Mather (in bogs)
Comment
UC1081561
Packera cana
Herbert L. Mason
1936-8-1
11478
Mono
Leevining Canyon Sierra Nevada, Yosemite National Park, Leevining Canyon (Yosemite National Park, Sierra Nevada)
Comment
UC635429
Paeonia brownii
H. L. Mason
1926-5-30
3327 a
El Dorado
Kit Carson Pass; e side, just below pass
2621
Comment
UC635428
Paeonia californica
H. L. Mason
1926-4-30
3149
San Diego
Oak Grove
853
Comment
UC565486
Palafoxia arida var. arida
H. L. Mason
1928-3-10
4189
Riverside
Whitewater River
Comment
UC1102972
Panicum acuminatum var. acuminatum
Herbert L. Mason
1958-8-9
14871
Tuolumne
w side Hetch Hetchy Dam (Swamp Lake Area); Sierra Nevada, Yosemite National Park, w side Hetch Hetchy d
1584
Comment
UCD88711
Panicum acuminatum var. fasciculatum
H. L. Mason
1958-8-6
14870
Tuolumne
Yosemite National Park, NW of Hetch-Hetchy, Swamp Lake meadow.
Comment
UC1101582
Panicum dichotomiflorum subsp. dichotomiflorum
Herbert L. Mason
1945-9-19
12720
Colusa
1 mi n Colusa (below causeway over Butte Sink spillway, e bank Sacramento River); e bank Sacramento River
Comment
UCD89966
Panicum rigidulum
H. L. Mason
1958-8-6
14855
Tuolumne
Yosemite National Park, NW of Hetch-Hetchy, Swamp Lake meadow.
Comment
SEINET11810400
Parthenium argentatum
R. E. Mason
1944-1
s.n.
Unknown
Fort Banning
Comment
UC1085298
Parvisedum pumilum
Herbert L. Mason
1957-5-1
El Dorado
near Garden Valley (Georgetown); Georgetown
Comment
UC571153
Parvisedum pumilum
H. L. Mason
1928-5-4
4506
El Dorado
Greene Valley 4 mi n of Shingle Springs; Greene Valley
Comment
JEPS50028
Parvisedum pumilum
H. L. Mason
1931-4-12
Napa
Napa State Hospital
Comment
UC665655
Parvisedum pumilum
Herbert L. Mason
1941-4-6
12409
Butte
3 mi s of Chico (near junction of road to Paradise, Sierra Nevada Foothills); Sierra Nevada Foothills
91
Comment
SEINET4178439
Paspalum dilatatum
Herbert L. Mason
1948-7-30
8260
Stanislaus
About 7 Miles South of Modesto on Crow's Landing road.
Comment
UC912651
Paspalum distichum
H. L. Mason
1928-10-2
4975
Monterey
Salinas River 1 mi below Salinas; Salinas River
Comment
POM313199
Paspalum distichum
H. L. Mason
1945-9-18
12701
Sutter
Margins of pools on overflow lands of Sutter By-pass near bridge on Yuba City-Knight's Landing highway.
Comment
UC1178983
Paxistima myrsinites
Herbert L. Mason
1945-9-9
12697
Sierra
s. of Downieville; Yuba R. Canyon
Comment
UC573064
Pectocarya penicillata
H. L. Mason
5133
Contra Costa
2 mi above Clayton (Marsh Creek Rd)
Comment
UC573059
Pectocarya pusilla
H. L. Mason
1929-4-25
5210
Contra Costa
Briones Rd to Antioch
Comment
UC573062
Pectocarya pusilla
H. L. Mason
1929-4-7
5180
Stanislaus
bluffs ca 10 mi above Oakdale; Sierra Foothills
Comment
UC1191209
Pectocarya setosa
Herbert L. Mason
1952-4-27
14279
San Benito
San Carlos Canyon
Comment
UC573132
Pectocarya setosa
Herbert L. Mason
1932-4-1
6889
Kern
5 mi s Muroc; Mojave Desert
Comment
JEPS23105
Pedicularis attollens
H. L. Mason
1924-6-26
Plumas
Blairsden
Comment
UC672550
Pedicularis groenlandica
H. L. Mason
1922-7-25
328
Mariposa
Porcupine Flat, Tioga Pass Road Porcupine Flat
2133
Comment
UC672554
Pedicularis semibarbata
H. L. Mason
1922-7-25
323
Mariposa
Porcupine Flat, Tioga Pass Road Porcupine Flat
2133
Comment
CAS-BOT-BC69293
Pellaea andromedifolia
H. L. Mason; H. A. Borthwick
1921-3-20
s.n.
Santa Clara
Guadalupe Canyon
Comment
CAS-BOT-BC71395
Pellaea mucronata
Miss. Mason
1892-1-1
s.n.
Orange
Orange
Comment
UC565585
Penstemon centranthifolius
H. L. Mason
1926-4-27
3032
Los Angeles
Rock Creek San Gabriel Mountains, Rock Creek
Comment
UC566684
Penstemon centranthifolius
Herbert L. Mason
1923-6-23
540
Monterey
10 mi above Carmel (Carmel River); , above Carmel
Comment
UC565603
Penstemon deustus var. pedicellatus
H. L. Mason
1931-5-9
5862
Siskiyou
Shasta Creek
Comment
NY600734
Penstemon gracilentus
H. L. Mason
1952-7-18
14394
Nevada
Sage Hen Creek
2133.6
Comment
NY601785
Penstemon heterophyllus var. purdyi
H. L. Mason
1934-4-28
8071
Sonoma
Head of Dohrman Creek, Jensen's Ranch
Comment
UC565577
Penstemon heterophyllus var. purdyi
Herbert L. Mason
1926-5-28
3271
Placer
5 mi above Auburn; above Auburn
Comment
UC565596
Penstemon laetus var. laetus
H. L. Mason
1923-7-14
599
Tuolumne
Mather Sierra Nevada Mountains, , Mather (Yosemite National Park)
Comment
UC1083136
Penstemon rostriflorus
Herbert L. Mason
1936-8-1
11485
Mono
Leevining Canyon Sierra Nevada, Yosemite National Park
Comment
JEPS11384
Penstemon speciosus
H. L. Mason
1924-6-26
1045
Plumas
Blairsden
Comment
UC1028677
Pentachaeta alsinoides
Herbert L. Mason
1933-4-21
7195
Santa Clara
road above Smith's Creek (on slopes of Isabel Creek); Isabel Creek
Comment
UC1060666
Pentachaeta exilis
Herbert L. Mason
1957-4-28
14693
El Dorado
about 5 mi s Georgetown; Garden Valley
579
Comment
UC1028678
Pentachaeta exilis
Herbert L. Mason
1931-4-5
5826
Alameda
road between Marsh Creek and Livermore
Comment
UC1076451
Pentagramma pallida
Herbert L. Mason
1929-3-23
5093
Tulare
3 mi above Springville (Middle Tule River)
Comment
UC1179104
Peraphyllum ramosissimum
Herbert L. Mason
13359
Modoc
s of Alturas (on Highway 395)
Comment
UC1039642
Perityle emoryi
Herbert L. Mason
1935-4-30
8293
San Bernardino
sw Trona (Poison Canyon); Poison Canyon
Comment
UCD99380
Persicaria amphibia
Herbert L. Mason
1946-7-27
12950
Lake
Clear Lake, 2-3 miles north of Lakeport.
Comment
UCD99378
Persicaria amphibia
Herbert L. Mason
1945-8-17
12665
Solano
North of Rio Vista.
Comment
UCD99319
Persicaria hydropiperoides
Herbert L. Mason; Verne Grant
1946-8-14
13027
Butte
Sacramento Outing Club.
Comment
CAS-BOT-BC419350
Persicaria punctata
Herbert L. Mason; S. Galen Smith
1948-8-9
8301
Merced
1 mile west of Los Banos
Comment
CAS-BOT-BC419413
Persicaria punctata
Herbert L. Mason
1945-8-17
12664
Solano
North of Rio Vista
Comment
UC566779
Petunia parviflora
H. L. Mason
1929-10-13
5507
Monterey
Bradley Salinas River (bridge over Salinas River)
Comment
UC570697
Petunia parviflora
H. L. Mason
1928-10-2
4976
Monterey
1 mi below Salinas; Salinas River
Comment
UC672336
Phacelia breweri
Herbert L. Mason
1926-4-11
2842
Alameda
Rancho Repose Cedar Mountain
Comment
UC672427
Phacelia campanularia subsp. campanularia
Herbert L. Mason
1928-3-10
4183
Riverside
Snow Creek Colorado Desert, Whitewater River Valley
Comment
UC672412
Phacelia ciliata var. ciliata
H. L. Mason
1932-3-19
6830
San Joaquin
2 mi e Midway
Comment
UC1093886
Phacelia crenulata var. ambigua
Herbert L. Mason
1940-3-22
12241
Inyo
Titus Canyon Death Valley National Monument, Grapevine Mountains (in washes)
Comment
UC672420
Phacelia distans
Herbert L. Mason
1933-4-21
7202
Santa Clara
n Mount Hamilton; Packard Ridge
Comment
UC672422
Phacelia distans
Herbert L. Mason
1926-4-11
2844
Alameda
Rancho Repose Cedar Mountain
Comment
RSA26548
Phacelia distans
H. L. Mason
1930-4-20
1
Fresno
Six miles from Coalinga on road to Priest Valley.
Comment
UC672424
Phacelia distans
Herbert L. Mason
1926-3-14
2724
Napa
sw slope Mt. St. Helena
Comment
UC672343
Phacelia douglasii
Herbert L. Mason
1932-4-3
6917
Fresno
on Priest Valley Rd 3 mi w Coalinga
Comment Read comments Apr 13 2016
UC672341
Phacelia douglasii
Herbert L. Mason
1930-4-21
5606
Monterey
Priest Valley
Comment
GH402987
Phacelia mohavensis
H. L. Mason
1927-6-14
3767
Unknown
Higher slopes of Mount San Antonio (Baldy)
2133
Comment
UC672389
Phacelia parryi
Herbert L. Mason
1926-4-25
2911
Orange
5 mi s Laguna
Comment
CAS-BOT-BC154324
Phacelia phacelioides
H. L. Mason
1938-5-3
11749
Contra Costa
Trail between Juniper Camp and Deer Flat, Mount Diablo
Comment
GH401012
Phacelia phacelioides
H. L. Mason
1938-5-3
11749
Unknown
Trail between Juniper Camp and Deer Flat, Mount Diablo
Comment
UC1178991
Phacelia purpusii
Herbert L. Mason
1947-7-8
13289
Shasta
about 1.5 mi w Burney
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
UC753518
Phacelia ramosissima var. latifolia
Herbert L. Mason
1946-6-7
12821
Santa Barbara
Agua Caliente silt dam San Rafael Range
609
Comment
CAS-BOT-BC159227
Phacelia ramosissima var. subglabra
H. L. Mason
1939-7-18
12174
El Dorado
north side of Luther Pass, one mile west of Grass Lake Meadow
2346
Comment
UC581165
Phacelia rotundifolia
H. L. Mason
1935-3-29
8223
San Bernardino
w Searles Lake; Mojave Desert, Poison Canyon
Comment
UCD120692
Phacelia suaveolens
Herbert L. Mason
1940-5-10
14805
Lake
Obsidian pond, north of Lower Lake.
Comment
UC672351
Phacelia tanacetifolia
Herbert L. Mason
1926-4-10
2807
Alameda
Arroyo Mocho Canyon Cedar Mt.
Comment
UC753519
Phacelia viscida
Herbert L. Mason
1946-6-7
12840
Santa Barbara
road between Camuesa Creek and Hidden Potrero; San Rafael Range
914
Comment
UC672388
Phacelia viscida
Herbert L. Mason
1923-6-19
520 a
Ventura
in stream wash near Ojai
Comment
UC632824
Phalacroseris bolanderi
H. L. Mason
1936-7-12
11244
Mariposa
Peregoy Meadow Yosemite National Park, Glacier Point road
2255
Comment
POM311162
Phalaris paradoxa
H. L. Mason
1940-5-3
12252
Fresno
Lyon & Hoag Ranch, 9 mi SE 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
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
UC964734
Phalaris paradoxa
Herbert L. Mason
1940-5-3
12252
Fresno
Lyon and Hoag Ranch, nine miles southeast of South Dos Palos
Comment
UC570852
Philadelphus lewisii
Herbert L. Mason
1925-6-27
2127
Tuolumne
Mather
Comment
UC1056437
Phleum alpinum
Herbert L. Mason
1936-8-6
11506
Mariposa
Yosemite National Park Glacier Point road Peregoy Meadow; Yosemite National Park, Glacier Point road, Peregoy Meadow
2255
Comment
UC912643
Phleum pratense
Herbert L. Mason
1925-7-11
2204
Tuolumne
Mather
Comment
UC714201
Phlox caespitosa
H. L. Mason
1936-7-31
11456 A
Mono
e of Saddlebag Lake; Sierra Nevada, Tioga Crest
3474
Comment
UC909118
Phlox gracilis
Herbert L. Mason
1928-4-13
4320
Marin
n of San Rafael
Comment
UC909129
Phlox gracilis
Herbert L. Mason
1925-3-23
1307
Alameda
Sunol
Comment
UC1191161
Phlox gracilis
Herbert L. Mason
1949-4-16
13995
Modoc
e of Alturas
Comment
UC908608
Phlox gracilis
Herbert L. Mason
1943-4-15
12563
Santa Clara
w side Pacheco Pass (border of Santa Clara-Merced counties)
Comment
GH379816
Phoenicaulis cheiranthoides subsp. glabra
H. L. Mason
1957-7-6
14720
Unknown
Mill Creek, Warner Mountains
Comment
UC1039594
Phoradendron libocedri
Herbert L. Mason
1925-7-12
2156
Tuolumne
Yosemite Nat'l Park, Mather, Hog Ranch Sierra Nevada, Yosemite Nat'l Park, Mather, Hog Ranch
Comment
UC1100410
Phragmites australis
Herbert L. Mason and Verne Grant
1946-9-12
13123
San Joaquin
Borden Highway halfway between Old River-Middle River; halfway between Old River-Middle River
Comment
CAS-BOT-BC452068
Phyllospadix torreyi
Herbert L. Mason
1927-11-27
4145
Santa Barbara
Carpinteria
Comment
UC566780
Physalis crassifolia
H. L. Mason
1928-3-10
4185
Riverside
Whitewater River
Comment
UC566778
Physalis pubescens var. integrifolia
H. L. Mason
Aug 1930
5713
Lake
Clear Lake
Comment
UC555703
Physocarpus capitatus
H. L. Mason
1925-9-17
2232
Marin
Ross Valley to Lake Lagunitas
Comment
UC971915
Picea breweriana
Herbert L. Mason
1950-7-16
14061
Siskiyou
Road from Happy Camp <California> to Waldo, Oregon
Comment
UC1055936
Pilularia americana
Herbert L. Mason
1952-4-14
14261
Contra Costa
3.5 mi s Byron
Comment
UC1077124
Pilularia americana
Herbert L. Mason
1932-3-20
6851
Contra Costa
Deer Valley
Comment
UC1083386
Pinus
Herbert L. Mason
1941-3-27
12391
Santa Barbara
Burton Mesa Pine Canyon, Burton Mesa (Pine Canyon, w Santa Barbara County)
Comment
UC1081572
Pinus albicaulis
Herbert L. Mason
1936-7-27
11381
Tuolumne
w Tioga Pass; Yosemite National Park, Gaylor Lakes
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
NY34548
Pinus balfouriana
H. L. Mason
1936-8-6
11519
Mono
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 Read comments Sep 6 2011
UC1061666
Pinus contorta
Herbert L. Mason
1928-8-3
Del Norte
Crescent City
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
UC1061645
Pinus contorta subsp. murrayana
Herbert L. Mason
October 1932
El Dorado
Lake Tahoe
Comment
UC1076347
Pinus contorta subsp. murrayana
Herbert L. Mason
1929-10-4
5476
Placer
Placerville road summit Johnson Pass
Comment
NY49718
Pinus contorta var. contorta
H. L. Mason
1934-9-3
8148
Mendocino
Just north of the town of Point Arena
Comment
UC1083327
Pinus lambertiana
H. L. Mason
1923-6-18
495
Ventura
Topa Topa
Comment
UC1061637
Pinus muricata
Herbert L. Mason
1928-10-21
Mendocino
Coastal Islets Little River
Comment
UC1083335
Pinus muricata
Herbert L. Mason
1923-6-15
393
Santa Barbara
road between Harris and Lompoc (summit of Harris Grade); Harris Grade
Comment
UC1083378
Pinus muricata
Herbert L. Mason
1941-3-27
12387
Santa Barbara
summit Harris Grade; sw Santa Barbara County, Purisima Ridge, Harris Grade
Comment
A246891
Pinus ponderosa
H. L. Mason
1936-8-6
11519
Unknown
hills between Saddlebag Lake and Conness Glacier, Sierra Nevada
3200
Comment Read comments Aug 12 2016
UC699599
Pinus ponderosa
H. L. Mason
1944-11-21
Alameda
Codornices Park Berkeley
Comment
UC494900
Pinus remorata
Herbert L. Mason
1927-9-25
4096
Santa Barbara
summit of pass over ridge from West Ranch to Prisoner's Harbor; Santa Cruz Island; near Prisoner's Harbor, Santa Cruz Island.
Comment
UC673585
Piperia elongata
H. L. Mason
1932-8-26
7163
Mendocino
Pine Barrens Mendocino
Comment
CAS-BOT-BC136605
Piperia michaelii
H. L. Mason
1921-6-20
s.n.
Santa Clara
Field redacted by CAS, contact the data manager for more information
Comment
UC573058
Plagiobothrys acanthocarpus
H. L. Mason
1932-3-19
6828
San Joaquin
2 mi e Midway (Tracy highway)
Comment
UC1076514
Plagiobothrys canescens
Herbert L. Mason
1938-4-14
11720
Tulare
4 mi w Exeter (Rocky Hill)
Comment
UC573060
Plagiobothrys chorisianus
H. L. Mason
1927-4-23
3692
San Mateo
between Pescadero Creek and La Honda
Comment
UCD120787
Plagiobothrys cognatus
Herbert L. Mason; Verne Grant
1947-7-12
13408
Modoc
Vernal pool; west side of the South Fork of Pit River Valley, southwest of Alturas.
Comment
UC1191845
Plagiobothrys cusickii
Herbert L. Mason and Verne Grant
1947-7-12
13419
Modoc
s of Alturas (along railroad track); Pit River Valley
Comment
UCD120801
Plagiobothrys cusickii
Herbert L. Mason; Verne Grant
1947-7-12
13415
Modoc
Near south end of west side road, Pit River Valley, south of Alturas.
Comment
UC965575
Plagiobothrys hispidulus
Herbert L. Mason
1952-7-16
14364
Nevada
one mi w University of California Trout Laboratory (peat meadow back of stream); Sierra Nevada, Sage Hen Creek
1981
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
CAS-BOT-BC58758
Plagiobothrys scouleri
Herbert Louis Mason; Verne Grant
1947-7-12
13415
Modoc
Pit River Valley, S of Alturas.
Comment
UC634851
Plagiobothrys stipitatus
H. L. Mason
1927-5-9
3704 a
Butte
12 mi w Oroville
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
CAS-BOT-BC58766
Plagiobothrys stipitatus var. micranthus
Herbert Louis Mason; Verne Grant
1947-7-12
13410
Modoc
W side of Pit River Valley, S of Alturas.
Comment
UCD121009
Plagiobothrys stipitatus var. micranthus
Herbert L. Mason; Verne Grant
1947-7-12
13410
Modoc
West side of Pit River Valley, south of Alturas.
Comment
UC573155
Plagiobothrys tenellus
Herbert L. Mason
1926-3-14
2737
Napa
near summit Mount St. Helena
Comment
UC1111006
Plantago erecta
Herbert L. Mason
1932-4-28
7038
Monterey
Pajaro Hills
Comment
UC769969
Plantago erecta
Herbert L. Mason
1934-3-25
7947
Sacramento
Rio Linda, Keithly ranch Sacramento Valley
30
Comment
RSA130694
Plantago lanceolata
H. L. Mason
1917-04
s.n.
Santa Clara
Stanford Unversity.
Comment
UCD124519
Plantago major
Herbert L. Mason
1945-8-24
12682
Lake
East shore, Lower Lake.
Comment
UC571166
Platanus racemosa
Herbert L. Mason with R. W. Chaney and F. W. Knowlton
1926-9-4
3637
Alameda
1 mi above Niles; Niles Canyon
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-BC91874
Platystemon californicus
H. L. Mason
1926-3-22
2793
Napa
Between Calistoga and Petrified Forest.
Comment
UC912454
Plectritis ciliosa subsp. ciliosa
Herbert L. Mason
1927-5-11
3731
Yuba
near Dobbins
457
Comment
UC964758
Plectritis ciliosa subsp. ciliosa
Herbert L. Mason
1938-4-17
11738
Mariposa
Hills near Cathay
Comment
UC912465
Plectritis macrocera
H. L. Mason
1932-4-25
7006
Amador
road Ione to Latrobe (Cosumnes River Bridge); Cosumnes River Bridge
Comment
UC1192102
Pluchea sericea
Herbert L. Mason and S. Galen Smith
1948-8-18
8353
Kings
canal just w Stratford; San Joaquin Valley
Comment
UCD90365
Poa annua
H. L. Mason
1917-1-25
s.n.
Santa Clara
Stanford University.
Comment
UC1110534
Poa glauca subsp. rupicola
Herbert L. Mason
1936-7-23
11312
Mono
se of summit Mt Conness
3505
Comment
CAS-BOT-BC255205
Poa pratensis
Herbert L. Mason
1936-7-24
11331
Tuolumne
White Mountain, Conness Range, Sierra Nevada
Comment
UC1108820
Poa secunda subsp. secunda
Herbert L. Mason
1938-7-25
12005
Tuolumne
deep lake at e base Mahan Peak; Sierra Nevada, Yosemite Nat'l Park
Comment
UC1190034
Poa unilateralis
H. L. Mason
1921-5-28
San Mateo
Pebble Beach near Pescadero
Comment
UC714386
Podistera nevadensis
H. L. Mason
1936-7-28
11409
Mono
Vicinity of Mount Dana Sierra Nevada, Dana Plateau
3505
Comment
UC1988918
Pogogyne douglasii
H. L. Mason
Jun 1930
5683
Lake
four miles east of Middletown
Comment
UC1191805
Pogogyne floribunda
Herbert L. Mason
1947-8-9
13474
Modoc
east side of Fairchild Swamp north of Alturas.
Comment
JEPS16753
Pogogyne serpylloides
Herbert L. Mason
1934-5-5
8117
Lake
Plain Southwest of Mount Konocti.
Comment
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
UC570732
Pogogyne serpylloides
H. L. Mason
1929-4-7
5167
Stanislaus
six miles west of Oakdale
Comment
UC570734
Pogogyne serpylloides
Herbert L. Mason
1924-5-13
1014
Contra Costa
Ridge south of Claremont Canyon, Berkeley Hills
Comment
UC1988945
Pogogyne zizyphoroides
H. L. Mason
1928-5-3
4476
Amador
Hills near Carbondale
Comment
UC570730
Pogogyne zizyphoroides
Herbert L. Mason
1928-5-3
4448
San Joaquin
4 miles north of Clements
Comment
UC908997
Polemonium carneum
Herbert L. Mason
1929-5-10
5287
Del Norte
on banks 2 mi n Smith River; n of Smith River
Comment
UC909080
Polemonium carneum
Herbert L. Mason
1932-4-16
6932
Alameda
summit <of road> Stonybrook Creek
Comment Read comments May 31 2011
UC714189
Polemonium eximium
Herbert L. Mason
1936-7-24
11340
Tuolumne
White Mountain Sierra Nevada, , White Mountain (Mount Conness Range)
3505
Comment
UC909006
Polemonium occidentale
Herbert L. Mason
1923-7-30
671
Tuolumne
Tuolumne Meadows Dana Fork Tuolumne River, Tuolumne Meadows
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
CAS-BOT-BC167814
Polygala cornuta var. cornuta
H. L. Mason
1926-5-29
3288
Nevada
Donner Pass Road near Alta
Comment
UC1192335
Polygonum amphibium var. emersum
Herbert L. Mason
1945-8-17
12665
Solano
n Rio Vista
Comment
UC1101135
Polygonum amphibium var. stipulaceum
Herbert L. Mason
1948-7-18
13613
Siskiyou
Grass Lake
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
POM312904
Polygonum coccineum
H. L. Mason
1928-9-30
4968
San Joaquin
San Joaquin Delta near Holt.
Comment
CAS-BOT-BC414504
Polygonum douglasii
Herbert L. Mason
1936-7-12
11229 a
Mariposa
Sierra Nevada, Yosemite National Park. Peregoy Meadow, Glacier Point road
Comment
SEINET3405793
Polygonum douglasii
Herbert L. Mason
1936-8-6
11509
Mariposa
Yosemite National Park; Peregoy Meadow, Glacier Point road
2256
Comment
YM-YOSE66373
Polygonum douglasii
H. L. Mason
1938-7-11
11935
Tuolumne
SWAMP LAKE RESEARCH RESERVE. GRAVEL PIT LAKE. MIGUEL MEADOW
Comment
UC1056967
Polygonum douglasii subsp. douglasii
Herbert L. Mason
1936-7-29
11442
Mono
cirque below Conness Glacier (w of Saddlebag Lake)
3200
Comment
UC1101178
Polygonum hydropiperoides
Herbert L. Mason
1928-9-30
4971
San Joaquin
near Holt; Alkaline Grasslands of San Joaquin Valley, San Joaquin Del
Comment
POM312533
Polygonum kelloggii
H. L. Mason
1948-7-17
13599
Siskiyou
Eastern Grass Lake.
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
UC1178957
Polygonum minimum
Herbert L. Mason
1932-9-9
7185
Alpine
w Ebbett's Pass
Comment
UC1191122
Polygonum paronychia
Herbert L. Mason
1924-10-19
1118
San Francisco
Country Club Gate San Francisco, Merced Lake (in sand hills)
Comment
SEINET3399386
Polygonum parryi
Herbert L. Mason
1957-6-21
14709
Sierra
Sierra Valley, 3 mi N of Satley
Comment
UC1101127
Polygonum persicaria
Herbert L. Mason
1926-6-6
3376
Santa Cruz
Felton San Lorenzo River
Comment
CAS-BOT-BC419873
Polygonum polygaloides subsp. confertiflorum
Herbert L. Mason
1948-7-17
13595
Siskiyou
Eastern Grass Lake
Comment
UC1191244
Polygonum polygaloides subsp. confertiflorum
Herbert L. Mason
1948-7-17
13595
Siskiyou
Eastern Grass Lake
Comment
UC1056968
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1936-7-29
11441
Mono
cirque below Conness Glacier (w of Saddlebag Lake)
3200
Comment
UC1060645
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1957-7-7
14729
Nevada
sw Hobart Mills; Prosser Meadow
Comment
UC1191242
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1948-7-17
13599
Siskiyou
Eastern Grass Lake
Comment
CAS-BOT-BC420026
Polygonum polygaloides subsp. kelloggii
Herbert L. Mason
1952-7-10
14311
Nevada
Sierra Nevada. One mile west of University of California Trout Laboratory (12 miles north of Truckee). Sage Hen [Sagehen]
1981
Comment
UC1191267
Polygonum punctatum
Herbert L. Mason
1928-9-30
4969
San Joaquin
near Holt; Alkaline Grasslands of San Joaquin Valley, San Joaquin Del
Comment
CAS-BOT-BC420171
Polygonum sawatchense subsp. sawatchense
Herbert L. Mason; Verne Grant
1947-7-9
13288
Shasta
Highway 299, just east of Hatchet Creek summit
1219
Comment
UC641803
Polygonum sawatchense subsp. sawatchense
H. L. Mason
1936-7-31
11472
Mono
near Saddlebag Lake; Sierra Nevada, Tioga Crest
Comment
UCD136935
Polypodium californicum
Herbert L. Mason
1925-3-7
1279
Alameda
Sunol.
Comment
UCD137006
Polypodium calirhiza
Herbert L. Mason
1928-3-4
41696
Contra Costa
Shell Ridge.
Comment
UCD136866
Polypodium glycyrrhiza
Herbert L. Mason
1925-11-26
2498
Sonoma
Monte Rio.
Comment
UC1093989
Polypodium scouleri
Herbert L. Mason
1930-3-9
5522
Marin
Pt. Reyes
Comment
UC672638
Polystichum imbricans subsp. imbricans
H. L. Mason
1923-7-21
629
Tuolumne
near summit of grade Hetch Hetchy R.R. Tracks; Sierra Nevada Mts., Yosemite Nat'l Park
Comment
SEINET3812422
Porterella carnosula
Herbert L. Mason
1953-7-19
14439
Sierra
Margins of marshy pond 1.5 miles E os Calpine near junction of Sierraville-Beckwith road and Calpine road, Sierra Valley
Comment
UC1099894
Potamogeton crispus
Herbert L. Mason, Verne Grant
1946-8-21
13068
San Joaquin
sw of Holt; Trapper's Slough
Comment
CAS-BOT-BC452104
Potamogeton crispus
Herbert L. Mason
1946-6-28
12877
Alameda
San Leandro Creek
Comment
POM313020
Potamogeton crispus
H. L. Mason, Verne Grant
1946-8-21
13068
San Joaquin
Trapper s Slough, SW of Holt, San Joaquin County
Comment
POM313021
Potamogeton crispus
H. L. Mason
1946-6-28
12877
Alameda
San Leandro Creek.
Comment
UC1099884
Potamogeton diversifolius
Herbert L. Mason, S. Galen Smith
1949-7-14
989
Fresno
2 mi w of Clovis (on road to Cameo)
Comment
UC1099889
Potamogeton diversifolius
Herbert L. Mason
1945-6-29
12624
Lake
Boggs Lake at base of Mount Hanna
Comment
UCD138275
Potamogeton diversifolius
Herbert L. Mason
1948-6-10
13591
Merced
Delta road, 3 miles east of Los Banos.
Comment
CAS-BOT-BC242249
Potamogeton epihydrus
Herbert Louis Mason; Verne Grant
1947-7-12
13397
Modoc
Jones' Lane, off Hwy 395, several mi. S of Alturas.
Comment
POM313023
Potamogeton foliosus
H. L. Mason
1948-9-4
13636
Mono
Rush Creek, Mono Lake.
Comment
UC1100038
Potamogeton foliosus
Herbert L. Mason
1946-6-28
12878
Alameda
San Leandro Creek
Comment
CAS-BOT-BC267167
Potamogeton foliosus
H. L. Mason
1921-5-28
s.n.
San Mateo
Lagoon back of Near Years Pl
Comment
UC1099859
Potamogeton gramineus
Herbert L. Mason
1937-7-22
11624
Tuolumne
Swamp Lakes just s of Miguel Meadows (and w of Hetch Hetchy Dam); Yosemite National Park
1584
Comment
UC1099907
Potamogeton gramineus
Herbert L. Mason
1929-10-4
5467
El Dorado
14 mi from Tahoe City (w side of Lake Tahoe above Emerald Bay); Lake Tahoe
Comment
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
UC1099854
Potamogeton illinoensis
Herbert L. Mason, Verne Grant
1946-8-21
13069
San Joaquin
sw of Holt; Trapper's Slough
Comment
UC1195927
Potamogeton natans
Herbert L. Mason
1958-8-9
14861
Tuolumne
w side of Hetch Hetchy Dam (Swamp Lake); Sierra Nevada, Yosemite National Park
1584
Comment
UC1178023
Potamogeton natans
Herbert L. Mason
1946-7-24
12942
Marin
Lakes Ranch
Comment
POM313007
Potamogeton nodosus
H. L. Mason
1947-7-10
12640
Butte
Sanford Slough, Butte Sink, southwest corner of Butte county.
Comment
UC1099837
Potamogeton pectinatus
Herbert L. Mason, Verne Grant
1946-8-8
13000
Butte
Reclamation Ditch 833 on West Gridley Road near Pennington Road
Comment
CAS-BOT-BC453930
Potamogeton pectinatus
Herbert L. Mason; Verne Grant
1946-7-5
12903
Solano
In Lake Chabot water reservoir just north of Vallejo
Comment
UC1099833
Potamogeton pectinatus
Herbert L. Mason
1948-9-4
13672
Mono
Junction of Highway 178 and Highway 395
Comment
UC1102961
Potamogeton pusillus var. pusillus
Herbert L. Mason
1958-8-9
14860
Tuolumne
Swamp Lake w of Hetch Hetchy Dam; Sierra Nevada, Yosemite National Park
1584
Comment
UC1100037
Potamogeton pusillus var. pusillus
Herbert L. Mason
1947-8-8
13468
Modoc
nw of Alturas (sw margin of Big Sage Reservoir); Big Sage Reservoir
Comment
UC1111026
Potamogeton robbinsii
Herbert L. Mason
1958-8-9
14847
Tuolumne
Swamp Lake w of Hetch Hetchy Dam; Sierra Nevada, Yosemite National Park
1584
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
UC555624
Potentilla anserina subsp. pacifica
Herbert L. Mason
1927-4-24
3701
San Mateo
mouth of San Gregorio Creek
Comment
CAS-BOT-BC143274
Potentilla flabellifolia
H. L. Mason
1923-8-7
720
Tuolumne
Dana Fork of Tuolumne River
Comment
UC555701
Potentilla gracilis var. fastigiata
H. L. Mason
1923-8-21
753
Tuolumne
n base Puppy Dome (Tuolumne Meadows); , n base of Puppy Dome
Comment
UC673335
Potentilla gracilis var. fastigiata
Herbert L. Mason
1923-8-8
725
Tuolumne
0.5 mi from mouth, Dana Fork Tuolumne River, Yosemite National Park Moraine Creek; Sierra Nevada, Yosemite Natl Park, Dana Fork Tuolumne R
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
CAS-BOT-BC214802
Potentilla rivalis
Herbert Louis Mason
1947-8-13
13518
Modoc
NE side of F reservoir, N of Canby.
Comment
UC1191491
Potentilla rivalis
Herbert L. Mason
1947-8-9
13476
Modoc
n Alturas (e side of Fairchild Swamp); , n of Alturas
Comment
CAS-BOT-BC516334
Prosartes hookeri
H. L. Mason
1917-4-4
75
Marin
Tocaloma
Comment
POM275680
Prunus fasciculata var. fasciculata
H. L. Mason
1935-5-1
10007
Kern
Ridge south of Isabella.
Comment
A346505
Prunus fasciculata var. punctata
H. L. Mason
1941-5-28
12403
Unknown
north end of Nipomo mesa
76
Comment
UC1093959
Prunus fasciculata var. punctata
Herbert L. Mason
1936-3-7
10992
San Luis Obispo
2 mi w of Nipomo; Nipomo Mesa
Comment
UC665649
Prunus fasciculata var. punctata
Herbert L. Mason
1941-3-28
12403
San Luis Obispo
north end of Nipoma mesa Nipoma mesa
76
Comment
GH346738
Prunus virginiana var. demissa
H. L. Mason
1927-6-15
3777
Unknown
San Gabriel Mountains
2590
Comment
UC566663
Psathyrotes ramosissima
H. L. Mason
1928-3-10
4224
Riverside
Hidden Springs Canyon Coachella Mountains, Hidden Springs Canyon
Comment
UC632877
Pseudobahia heermannii
H. L. Mason
1936-3-20
11012
Tuolumne
3 mi above Tuolumne
Comment
UC581138
Pseudognaphalium californicum
H. L. Mason
1932-8-28
7170
Mendocino
Point Arena
Comment
UC672202
Pseudognaphalium californicum
H. L. Mason
1934-3-31
9708
Santa Barbara
La Purisima Ridge
Comment
UC632820
Pseudognaphalium luteoalbum
H. L. Mason
1936-4-12
11072
Amador
near Lancha Plana; Mokelumne River
Comment
UC1083308
Pseudotsuga menziesii var. menziesii
Herbert L. Mason
1926-1-1
2589
Mendocino
Upper Lake to Elk Mt.
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
UC604417
Psilocarphus brevissimus var. brevissimus
H. L. Mason
1934-5-5
8122
Lake
e of Kelseyville (sw of the base of Mount Konocti)
Comment
UC912588
Psilocarphus brevissimus var. brevissimus
Lucile Mason
1934-3-25
Sacramento
Rio Linda
Comment
UC965546
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1952-7-19
14429
Nevada
opposite University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
UC1111581
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1935-5-30
2837
Napa
just s Napa State Hospital
Comment
UC1111607
Psilocarphus brevissimus var. brevissimus
Herbert L. Mason
1938-5-6
11766
Monterey
outside Jolon (at the junction to Indian Road, Santa Lucia Park)
Comment
POM312513
Psilocarphus oregonus
H. L. Mason, Verne Grant
1947-7-13
13450
Modoc
West end of Fandango Pass, near Goose Lake on road to Fort Bidwell.
Comment
UC604420
Psilocarphus oregonus
H. L. Mason
1934-5-5
8133
Lake
se of Kelseyville (near Hildebrand Ranch)
Comment
UC694145
Psilocarphus tenellus
H. L. Mason
1932-4-24
6964
Contra Costa
Marsh Creek Road
Comment
UC694148
Psilocarphus tenellus
Lucile Mason
1934-3-25
Sacramento
Rio Linda
Comment
UC694149
Psilocarphus tenellus
H. L. Mason
1934-3-31
8045
Santa Barbara
La Purisima Ridge
Comment
UC694160
Psilocarphus tenellus
H. L. Mason
1933-4-17
7166
Alameda
Stony Brook
Comment
UC694162
Psilocarphus tenellus
Lucile Mason
1934-3-31
8040
Santa Barbara
Lompoc
Comment
UC694155
Psilocarphus tenellus
Lucile Mason
1934-4-1
Monterey
Lucia
Comment
UC555339
Psorothamnus arborescens var. arborescens
Herbert L. Mason
1926-4-27
3066
San Bernardino
near Victorville; near Victorville
Comment
UC555342
Psorothamnus schottii
Herbert L. Mason
1928-3-10
4218
Riverside
Hidden Springs Canyon , Hidden Springs Canyon (Coachella Mts.)
Comment
UC571101
Ptelea crenulata
H. L. Mason
1928-4-1
4270
Contra Costa
hills n Mount Diablo (canyon back of Antioch hills)
Comment
UC635045
Pterostegia drymarioides
H. L. Mason
1926-4-18
2864
San Francisco
along coast San Francisco
Comment
UC1199845
Pyrola asarifolia
Herbert L. Mason and L. W. Reinecke
1937-7-22
11613
Tuolumne
Swamp Lakes, south of Miguel Meadows in the hills just west of Hetch Hetchy dam, Yosemite National Park
1584
Comment
UC1083179
Quercus X morehus
H. L. Mason
1924-11-15
1132
Marin
Willow Creek
Comment
UC1076083
Quercus agrifolia
Herbert L. Mason
1926-9-12
3638
Marin
Lake Lagunitas
Comment
UCD45055
Quercus agrifolia
Herbert L. Mason
1938-5-8
11809
Santa Barbara
Vicinity of the summit of Figueroa Mountain, Santa Barbara County.
Comment
UC1083142
Quercus chrysolepis
Herbert L. Mason
1928-10-3
4990
Monterey
10 mi from the Mission; Carmel River
Comment
UC1083195
Quercus chrysolepis
Herbert L. Mason
1928-10-3
4990
Monterey
10 mi from the Mission; Carmel River
Comment
UC1083144
Quercus douglasii
Herbert L. Mason
1928-5-4
4495
El Dorado
near Latrobe (Swift Ranch)
Comment
UCD54402
Quercus lobata
Herbert L. Mason
1929-10-12
5489
San Luis Obispo
San Luis Obispo Co: 5.2 miles from Atascadero.
Comment
UCD47141
Quercus parvula var. shrevei
Herbert L. Mason
1929-12-1
5513
Santa Cruz
Swanton, Santa Cruz County.
304
Comment
UCD47350
Quercus tomentella
Herbert L. Mason
1927-9-25
4102
Santa Barbara
Occasional in forests end canyons. Pass from West Ranch to Prisoner's Harbor, Santa Cruz Island, Santa Barbara County.
Comment Read comments Apr 29 2014
UC1083222
Quercus vacciniifolia
Herbert L. Mason
1932-7-21
7108
Humboldt
on road from Arcata to Weaverville (e slope of Southfork Mountains); Southfork Mountains
Comment Read comments Oct 6 2006
UC1199514
Quercus vacciniifolia
Herbert L. Mason
1929-10-4
6573
El Dorado
hills above Glen Alpine; Fallen Leaf Lake
Comment
UC1076081
Quercus wislizeni
H. L. Mason
1924-10-12
1111
Marin
s slope Mt. Tamalpais
Comment
UC1083224
Quercus wislizeni
Herbert L. Mason
Nov 1931
5895
Santa Cruz
canyon above Greyhound Rock; Ano Nuevo Point
Comment
UCD47622
Quercus wislizeni
Herbert L. Mason
1923-6-15
402
Santa Barbara
Harris Grade, Santa Barbara County.
1828
Comment
CAS-BOT-BC362884
Raillardella scaposa
Herbert L. Mason
1938-7-28
12028
Tuolumne
Sierra Nevada, Yosemite National Park. Macomb Ridge east of Tilden Lake
3048
Comment
CAS-BOT-BC379448
Ranunculus alismifolius var. hartwegii
H. L. Mason
1926-5-30
3327
El Dorado
Kit Carson Pass
2621
Comment
UC1101368
Ranunculus aquatilis var. capillaceus
Herbert L. Mason and Verne Grant
1947-7-9
13290
Lassen
5 mi e Bieber (irrigation ditch)
Comment
UC1101372
Ranunculus aquatilis var. capillaceus
Herbert L. Mason
1946-7-24
12940
Marin
near Double Point; Lake Ranch
Comment
CAS-BOT-BC378901
Ranunculus californicus var. californicus
H. L. Mason
1917-2-9
25
Alameda
Berkeley Hills
Comment
UC635097
Ranunculus canus var. canus
H. L. Mason
1929-3-15
5055
Contra Costa
on summit of hill east of Nortonville
Comment
UC1101379
Ranunculus cymbalaria var. saximontanus
Herbert L. Mason
1948-9-4
13647
Mono
Rush Creek Mono Lake
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
UC1101374
Ranunculus flammula
Herbert L. Mason
1945-8-24
12669
Lake
Boggs Lake
Comment
POM268684
Ranunculus flammula var. ovalis
H. L. Mason
1945-8-24
12669
Lake
Boggs Lake, NW base of Mt. Hanna
Comment
POM269513
Ranunculus orthorhynchus var. bloomeri
H. L. Mason
1928-3-24
4266
Marin
Millerton, Tomales Bay, Marin County
Comment
UCR139438
Ranunculus orthorhynchus var. orthorhynchus
H. L. Mason
1923-7-13
588
Tuolumne
Sierra Nevada Mtns., Hog Ranch (Mather)
1400
Comment
POM313443
Ranunculus sceleratus
H. L. Mason
1937-6-21
11547
Contra Costa
0.5 mile from the S end of Borden Hwy and 1.5 miles W of Byron.
Comment
POM285054
Ranunculus uncinatus var. parviflorus
H. L. Mason
1952-7-16
14354
Nevada
Sage Hen Creek, 1 mile W of University of California Trout Laboratory.
1982
Comment
A378180
Rhamnus alnifolia
H. L. Mason
1939-8-3
12200
Unknown
Squaw Valley 7 miles northeast of Tahoe City
1889
Comment
CAS-BOT-BC59530
Rhamnus alnifolia
H. L. Mason
1939-8-3
12200
Placer
Squaw Valley 7 miles northwest of Tahoe City
1889
Comment
UC672654
Rhamnus californica
Herbert L. Mason
Nov 1931
5886
Monterey
road between Monterey and Carmel
Comment
UC570983
Rhamnus californica subsp. californica
Herbert L. Mason
1923-7-14
423
Santa Barbara
Gaviota Pass
Comment Read comments Apr 2 2007
UC570994
Rhamnus crocea
Herbert L. Mason
1923-6-14
416
Santa Barbara
Gaviota Pass
Comment Read comments Apr 2 2007
GH378340
Rhamnus crocea var. ilicifolia
H. L. Mason
1929-10-12
5493
Unknown
Morro Creek drainage, 8.4 miles west of Atascadero
Comment
UC570990
Rhamnus ilicifolia
Herbert L. Mason
1926-5-28
3265
Placer
near Auburn
Comment
UC570992
Rhamnus ilicifolia
Herbert L. Mason
1929-3-23
5085
Tulare
3 mi above Springville; Middle Tule River
Comment
UC1093873
Rhamnus rubra
Herbert L. Mason
1938-7-25
12003
Tuolumne
s base Mahan Peak (Deep Lake, Jack Main Canyon, Yosemite National Park, Sierra Nevada); Sierra Nevada, Yosemite National Park, Deep Lake
2438
Comment
UC571001
Rhamnus rubra
Herbert L. Mason
1925-7-16
2172
Tuolumne
Mather
1432
Comment
UC570981
Rhamnus tomentella subsp. tomentella
Herbert L. Mason
1923-6-16
439
Santa Barbara
La Cumbre Peak
Comment
GH363065
Rhododendron macrophyllum
H. L. Mason
1930-06-01 - 1930-07-01
5632
Unknown
Fort Bragg
Comment
UC571072
Rhododendron occidentale
H. L. Mason
1925-6-29
2137
Tuolumne
Lake Eleanor
1432
Comment
CAS-BOT-BC170443
Rhus integrifolia
H. L. Mason
1926-4-26
2943
Los Angeles
Pacoima Wash, foothills of San Gabriel Mountains
Comment
UC635197
Rhus integrifolia
H. L. Mason
1926-4-26
2943
Los Angeles
Pacoima Wash, foothills of San Gabriel Mountains
Comment
UC635192
Rhus ovata
H. L. Mason
1923-6-16
430
Santa Barbara
Rattlesnake Canyon between Santa Barbara and La Combre Peak; Rattlesnake Canyon
Comment
UC1100685
Rhynchospora californica
Herbert L. Mason
1946-7-4
12881
Sonoma
between Santa Rosa and Forestville; Pitkin Marsh
Comment
UCD141234
Rhynchospora capitellata
Herbert L. Mason
1946-7-4
12881
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
UC570838
Ribes californicum
Herbert L. Mason
1926-3-7
2709
Contra Costa
Summit Mt. Diablo
Comment
UC570839
Ribes californicum
Herbert L. Mason
1925-12-31
2566
Lake
Bartlett Mountain Road
Comment
UC570835
Ribes cereum
Herbert L. Mason
1926-5-30
3324
Alpine
Kit Carson Pass road
1889
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
UC570821
Ribes malvaceum
Herbert L. Mason
1924-11-23
1168
Contra Costa
Las Trampas Ridge
Comment
UC1191514
Ribes menziesii
Herbert L. Mason
1946-7-24
12920
Marin
2.8 mi n Lake Ranch (first lake s of Bear Valley)
Comment
UC570976
Ribes nevadense
Herbert L. Mason
1926-5-1
3164
San Diego
Sourdough Spring Palomar Mt.
Comment
UC570967
Ribes sanguineum
Herbert L. Mason
1929-9-1
5407
Mendocino
3 mi n Fort Bragg
Comment
CAS-BOT-BC209379
Ribes sanguineum var. glutinosum
H. L. Mason
1917-2-2
19
Alameda
Berkeley Hills
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
UC570959
Ribes speciosum
H. L. Mason
1934-3-31
8056
San Luis Obispo
See Canyon Pecho Hills
Comment
UC570960
Ribes speciosum
Herbert L. Mason
1929-10-12
5485
San Luis Obispo
4.3 mi w Atascadero; Atascadero Creek
Comment
UCD102512
Ribes speciosum
H. L. Mason
1920-5-1
s.n.
Unknown
County and location unknown.
Comment
UC632843
Rigiopappus leptocladus
H. L. Mason
1936-5-15
11113
Mariposa
three mi above Coulterville
Comment
CAS-BOT-BC92205
Romneya trichocalyx
H. L. Mason
1923-6-18
514
Ventura
Red Reef Canyon, Topatopa Mountains.
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
UC555666
Rosa californica
H. L. Mason
1930-10-25
5771
Monterey
banks of river between Jolon and Santa Lucia Ranger Station; San Antonio River
Comment
UCD113421
Rosa californica
Herbert L. Mason; Verne Grant
1947-6-26
13261
Solano
Cordelia Slough, Suisun Marsh.
Comment
UC555674
Rosa californica
H. L. Mason
1929-10-12
5498
San Luis Obispo
10 mi w Atascadero
Comment
RSA0016981
Rotala ramosior
H. L. Mason
1936-7-15
11256
Tuolumne
Margin of pool, 1/2 mile W of Mather
1372
Comment
UC555499
Rubus spectabilis
H. L. Mason
June 1930
5627
Mendocino
Fort Bragg
Comment
RSA112365
Rubus spectabilis var. franciscanus
H. L. Mason
1922-3-29
s.n.
Santa Cruz
Liddell Creek near mouth of canyon.
Comment
UC1101200
Rumex conglomeratus
Herbert L. Mason
1946-7-24
12930
Marin
second lake s on road to Lake Ranch Bear Valley
Comment
CAS-BOT-BC433491
Rumex fueginus
Herbert L. Mason; Verne Grant
1947-7-11
13362
Modoc
On Highway 395, 5 miles south of Alturas.
Comment
CAS-BOT-BC211302
Rumex lacustris
Herbert Louis Mason; Verne Grant
1947-7-10
13336
Modoc
Dorris Reservoir, 2 mi E of Alturas.
Comment
CAS-BOT-BC211350
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
UC1191272
Rumex maritimus
Herbert L. Mason and Verne Grant
1947-7-11
13362
Modoc
5 mi s Alturas (on Highway 395)
Comment
UC1083116
Rumex paucifolius
Herbert L. Mason
1936-7-29
11430
Mono
w of Saddlebag Lake (cirque below Conness Glacer)
3200
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
UC1191315
Rumex violascens
Herbert L. Mason
1947-6-26
13255
Solano
Suisun Marshes
Comment
UC555350
Rupertia physodes
H. L. Mason
1926-5-26
3241
Alameda
Niles Canyon
Comment
UC1100030
Ruppia maritima
Herbert L. Mason
1923-10-6
770
Solano
Suisun Marsh
Comment
CAS-BOT-BC445666
Sagittaria cuneata
Herbert L. Mason
1945-6-29
12623
Lake
Boggs Lake at base of Mount Hanna
Comment
UC1051438
Sagittaria cuneata
Herbert L. Mason
1955-8-13
14647 a
Lassen
Willow Creek Valley
Comment
UCD138008
Sagittaria cuneata
Herbert L. Mason
1947-8-12
13506
Modoc
Junction of North and South forks of Pit River, Alturas.
Comment
CAS-BOT-BC445727
Sagittaria latifolia
Herbert L. Mason; Verne Grant
1946-8-14
13040
Butte
Butte Sink
Comment
UC935728
Sagittaria latifolia
Herbert L. Mason and S. Galen Smith
1948-8-18
8357
Merced
just w Dos Palos; San Joaquin Valley
Comment
UC935746
Sagittaria latifolia
Herbert L. Mason and Verne Grant
1946-8-14
13020
Butte
Butte Sink; canal near big pond on Sacramento Outing Club
Comment
UCD138041
Sagittaria latifolia
Herbert L. Mason
1945-9-19
12713
Colusa
Sacramento river, 1 mile north of Colusa on east side, below causeway.
Comment
UC935715
Sagittaria longiloba
Herbert L. Mason and S. Galen Smith
1948-8-10
8313
Fresno
ditch adjacent to Mendota Canal (sw of Firebaugh); San Joaquin Valley, adjacent to Mendota Canal
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
UC935731
Sagittaria montevidensis subsp. calycina
Herbert L. Mason
1948-6-29
13579
Merced
5 mi n Volta; San Joaquin Valley
Comment
UC935733
Sagittaria montevidensis subsp. calycina
Herbert L. Mason and S. Galen Smith
1948-8-11
8322
Merced
s of junction of Merced and San Joaquin Rivers (Crane Ranch); San Joaquin Valley, s of jct of Merced and San Joaquin River
Comment
UC935778
Sagittaria sanfordii
Herbert L. Mason and S. Galen Smith
1948-8-10
8318
Fresno
at entrance of Firebaugh canal w side Mendota Pool; San Joaquin Valley, Mendota Pool
Comment
UCD138071
Sagittaria sanfordii
Herbert L. Mason; Verne Grant
1946-8-8
13001
Butte
West Gridley road one mile west of Gridley - Pennington Highway.
Comment
UC672595
Salazaria mexicana
H. L. Mason
1926-4-26
2981
Los Angeles
Vincent to Palmdale; Vincent to Palmdale
Comment
UC1191412
Salicornia europaea
Herbert L. Mason
1946-7-29
12956 -A
Sonoma
0.5 mi n Sears Point
Comment
SEINET200131
Salicornia pacifica
H. L. Mason, GL Smith
1948-8-9
8277
Santa Clara
About 8 mi W of Gilroy
Comment
UCD99148
Salicornia pacifica
H. L. Mason; Malcolm A. Nobs
1948-12-11
714
Santa Clara
at north base of Pacheco Pass.
Comment
CAS-BOT-BC103714
Salix eastwoodiae
H. L. Mason
1923-7-29
668
Tuolumne
Dana Fork, Tuolumne Meadows
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
CAS-BOT-BC125921
Salix planifolia
H. L. Mason
1922-7-31
337
Tuolumne
Lyell Fork of Tuolumne River
2438
Comment
CAS-BOT-BC125952
Salix scouleriana
H. L. Mason
1926-1-1
2588
Lake
Near summit of Elk Mountain
Comment
UC748763
Saltugilia australis
Herbert L. Mason
1926-5-2
3195
Riverside
Temecula Valley; ; Temecula Valey, Riverside Co.
Comment
UC909119
Saltugilia splendens subsp. splendens
Herbert L. Mason
1926-4-27
3037
Los Angeles
Rock Creek San Gabriel Mts., Rock Creek
Comment
UC634918
Salvia leucophylla
H. L. Mason
1923-6-16
432
Santa Barbara
between La Cumbre Peak and Santa Barbara (Rattlesnake Canyon); Rattlesnake Canyon
Comment
CAS-BOT-BC221117
Salvia sonomensis
H. L. Mason
1928-5-4
4497
El Dorado
Dugars, 3 miles north of Latrobe
Comment
POM199581
Salvia sonomensis
H. L. Mason
1932-4-24
s.n.
Amador
3 miles S of Ione
Comment
UC634915
Salvia sonomensis
H. L. Mason
1928-5-4
4497
El Dorado
3 mi n Latrobe (Dugars)
Comment
UC634919
Salvia spathacea
H. L. Mason
1923-6-15
389
Santa Barbara
Harris Grade; La Purisima Ridge
Comment
UC525883
Sambucus mexicana
H. L. Mason
1925-6-27
2128
Tuolumne
Mather
Comment
UC1076263
Sambucus mexicana
Herbert L. Mason
1929-10-12
5491
San Luis Obispo
8.4 mi from Atascadero
Comment
UC912452
Sambucus racemosa var. racemosa
Herbert L. Mason
1924-11-16
1156
Marin
lowlands back of dunes; Willow Camp
Comment
UC1178021
Samolus parviflorus
Herbert L. Mason
1955-7-14
14634
Contra Costa
1/2 mi e of Antioch Bridge
Comment
UC635705
Samolus parviflorus
H. L. Mason
September 1930
5904
Monterey
Elkhorn Slough between Watsonville and Castroville; Elkhorn Slough
Comment
UC1191144
Sanicula bipinnatifida
Herbert L. Mason
1953-4-18
14511
Lake
4.5 mi n of Middletown (near Anderson's Springs)
Comment
UC566885
Sanicula crassicaulis
H. L. Mason
1926-3-17
2743
Alameda
Berkeley Hills, Strawberry Canyon Strawberry Canyon; Berkeley Hills, Strawberry Canyon
Comment
UC566827
Sanicula graveolens
H. L. Mason
1926-5-31
3360
Calaveras
1.5 mi w of Calaveres Big Tree Grove (junction of old road and new)
Comment
UC1178998
Sanicula laciniata
Herbert L. Mason
1938-5-7
11768
Santa Barbara
Burton Mesa
Comment
SEINET3815688
Sanicula tuberosa
Herbert L. Mason
1939-7-8
12153
Nevada
3 miles west of Donner Summit
2073
Comment
UC1178946
Sanicula tuberosa
Herbert L. Mason
1939-7-8
12153
Nevada
3 mi w of Donner Summit
2072
Comment
GH381136
Saxifraga californica
H. L. Mason
1926-3-7
2702
Unknown
Mt. Diablo
Comment
UC1081516
Saxifraga californica
Herbert L. Mason
1936-3-14
10994
Calaveras
s of Sheep Ranch (San Antonio Creek); San Antonio Creek
Comment
UC1081524
Saxifraga californica
Herbert L. Mason
1936-3-20
11015
Tuolumne
3 mi above Tuolumne; Sierra Nevada
Comment
UC570945
Saxifraga californica
Herbert L. Mason
1926-3-6
2688
Marin
Mount Tamalpais
Comment
UC635130
Saxifraga integrifolia
H. L. Mason
1931-3-7
5808
Sonoma
12 mi w of Santa Rosa (Vine Hill School); Vine Hill School
Comment
UC570932
Saxifraga nidifica var. nidifica
Herbert L. Mason
1926-5-30
3306
El Dorado
hills above Lake Tahoe; Emerald Bay, Lake Tahoe
1981
Comment
UC1056438
Saxifraga odontoloma
Herbert L. Mason
1937-7-30
Mono
above Lake Mary
Comment
UC642736
Saxifraga odontoloma
H. L. Mason
1936-7-31
11475
Mono
Tioga Crest near Saddlebag Lake (Tioga Pass region); Sierra Nevada, , Tioga Crest
3200
Comment
CAS-BOT-BC111372
Schoenoplectus acutus var. occidentalis
Herbert L. Mason; Verne Grant
1946-8-14
13031
Butte
Canal near big pond on Sacramento Outing Club, Butte Sink
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
UC1100773
Schoenoplectus acutus var. occidentalis
Herbert L. Mason, Verne Grant
1947-6-26
13265
Solano
Suisun Marsh Cordelia Slough, Suisun Marsh
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
UCD50073
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, Butte County.
Comment
POM312846
Schoenoplectus maritimus
H. L. Mason
1945-8-16
12660 -a
Solano
Grizzly Island, near Suisun Bay
Comment
POM312850
Schoenoplectus mucronatus
H. L. Mason
1946-9-27
13135
Butte
3 miles west of Biggs.
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
YM-YOSE65594
Scirpus acutus
H. L. Mason
1938-7-8
11883
Tuolumne
SWAMP LAKE RESEARCH RESERVE. WEST END OF SWAMP (LAKE?)
Comment
UC1100679
Scirpus acutus var. occidentalis
Herbert L. Mason, Verne Grant
1946-7-5
12906
Solano
in water in Lake Chabot water reservoir just n Vallejo; Lake Chabot water reservoir, n of Vallejo
Comment
UC1100764
Scirpus acutus var. occidentalis
Herbert L. Mason
1948-9-4
13648
Mono
Rush Creek Mono Lake, Rush Creek
Comment
UC1100770
Scirpus acutus var. occidentalis
Herbert L. Mason, Verne Grant
1947-7-9
13298
Lassen
irrigation ditch 5 mi e Bieber; e of Bieber
Comment
UC1100771
Scirpus acutus var. occidentalis
Herbert L. Mason, Verne Grant
1947-6-26
13271
Solano
Suisun Marsh Cordelia Slough, Suisun Marsh
Comment
UC1100769
Scirpus acutus var. occidentalis
Herbert L. Mason, Verne Grant
1947-7-11
13365
Modoc
on Highway 395 5 mi s Alturas; on Highway 395 5 mi s of Alturas
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
UC1100796
Scirpus californicus
Herbert L. Mason
1946-8-28
13092
San Mateo
Pond Highway 5 about 3 mi s Daly City Road; s of Daly City Road, pond
Comment
UC1100924
Scirpus maritimus
Herbert L. Mason, Verne Grant
1946-8-6
12964
Colusa
four mi s Colusa (w side Sacramento River, pond on Colusa-Marysville Highway); w side Sacramento River, s of Colusa
Comment
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
UC1100883
Scirpus nevadensis
Herbert L. Mason
1948-9-4
13664
Mono
Rush Creek Mono Lake, Rush Creek
Comment
UC1100887
Scirpus nevadensis
Herbert L. Mason, Verne Grant
1947-7-12
13436
Modoc
n Likely (Corporation Ranch Headquarters); , n of Likely
Comment
UC1100806
Scirpus pungens
Herbert L. Mason
1948-9-4
13663
Mono
Rush Creek , Rush Creek (Mono Lake)
Comment
UC634870
Scutellaria californica
H. L. Mason
1934-4-30
8106
Napa
5 mi s of Putah Creek (tributary of Putah Creek, Napa)
Comment
GH402093
Scutellaria siphocampyloides
H. L. Mason
1940-5-5
12280
Unknown
north slope of Twin Peaks, North Fork of Los Banos Creek, Inner South Coast Ranges
457
Comment
CAS-BOT-BC417034
Sedella pumila
H. L. Mason
1938-4-14
11703
Tulare
Rocky Hill, east of Exeter.
304
Comment
CAS-BOT-BC417037
Sedella pumila
H. L. Mason
1938-4-14
11703
Tulare
Rocky Hill, east of Exeter.
304
Comment
CAS-BOT-BC416976
Sedella pumila
Herbert L. Mason
1941-4-6
12409
Butte
Three miles S of Chico near junction of road to Paradise
91
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
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
UC1076450
Selaginella bigelovii
Herbert L. Mason
1926-4-26
2941
Los Angeles
upper rd. Pacoima Wash; San Gabriel Mts.
Comment
UC1076341
Selaginella wallacei
Herbert L. Mason
1925-2-1
1224
Marin
Mt. Tamalpais
Comment
UC1093682
Selaginella wallacei
Herbert L. Mason
1926-1-1
2585
Lake
Upper Lake to Elk Mt.
Comment
UC641693
Selaginella watsonii
H. L. Mason
1936-7-24
11354
Tuolumne
White Mt.; Sierra Nevada, Mt. Conness Range
Comment
UC566656
Senecio californicus
H. L. Mason
1926-4-25
2908
Orange
five mi s Laguna
Comment
UC566661
Senecio flaccidus var. monoensis
H. L. Mason
1925-4-25
3068
San Bernardino
Box S Springs
Comment
CAS-BOT-BC363599
Senecio fremontii var. occidentalis
Herbert L. Mason
1940-7-30
12352
Alpine
Sierra Nevada. Hills north of Carson Pass
Comment
UC566633
Senecio glomeratus
H. L. Mason
1928-7-10
4884
Sonoma
Jenner
Comment
UC714440
Senecio integerrimus var. exaltatus
H. L. Mason
1936-7-23
11279
Tuolumne
Mount Conness Sierra Nevada
Comment
UC1039616
Senna armata
Herbert L. Mason
1935-4-30
8299
Kern
23 mi. w. Trona
Comment
UC672602
Sequoia sempervirens
H. L. Mason
1928-8-26
4941
Mendocino
slough of Pudding Creek Pudding Creek
Comment
CAS-BOT-BC364779
Sericocarpus oregonensis subsp. californicus
Herbert L. Mason
1937-7-21
11556
Tuolumne
Sierra Nevada, Yosemite National Park. Miguel Meadow, west of Hetch Hetchy
1584
Comment
UC1076532
Sericocarpus oregonensis subsp. californicus
Herbert L. Mason
1937-7-21
11556
Tuolumne
west of, Miguel Meadow Hetch Hetchy; Yosemite National Park, Miguel Meadow
1584
Comment
UCD92613
Setaria parviflora
Herbet L. Mason; S. Galen Smith
1948-7-30
8262
Stanislaus
about 7 miles south of Modesto, on Crow's Landing Road.
Comment
CAS-BOT-BC243639
Setaria pumila
Herbert L. Mason; Verne Grant
1946-9-12
13127
San Joaquin
Borden Highway near Dagget Road, Roberts Island
Comment
CAS-BOT-BC243648
Setaria pumila
Herbert L. Mason
1945-9-18
12712
Sutter
Pennington Road between Live Oak and Pennington
Comment
UC1100459
Setaria pumila
Herbert L. Mason and Verne Grant
1946-9-27
13131
Butte
Pennington-Gridley Rd. Butte Sink
Comment
UCD92862
Setaria viridis
Herbert L. Mason; Malcolm A. Nobs
1948-9-3
491
Riverside
2 miles north of Indio.
Comment
UC1191168
Sidalcea glaucescens
Herbert L. Mason
1926-5-31
3355
Calaveras
1.2 mi sw Big Trees (on old road)
Comment
GH420707
Sidalcea hartwegii
H. L. Mason
1932-4-24
Unknown
Near base of Pilot Hill about 11 mi. E. of Folsom
Comment
POM199432
Sidalcea hartwegii
H. L. Mason
1932-4-24
s.n.
Sacramento
Near base of Pilot Hill about 11 miles E of Folsom
Comment
UC1083209
Sidalcea hartwegii
Herbert L. Mason
1936-5-16
11124 A
Mariposa
Summit of road between Coulterville and Bagby
Comment
CAS-BOT-BC384566
Silene bridgesii
Herbert L. Mason
1925-7-10
2154
Tuolumne
Hog Range, Mather, Sierra Nevada
1432
Comment
UC769971
Silene gallica
Herbert L. Mason
1934-3-25
7945
Sacramento
Keithly Ranch Sacramento Valley, Rio Linda, Keithly ranch
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
UC672673
Sisyrinchium bellum
H. L. Mason
1923-7-23
642
Tuolumne
Hog Ranch; Sierra Nevada Mountains, Yosemite National Park
Comment
UC672671
Sisyrinchium idahoense var. idahoense
H. L. Mason
1923-7-30
674
Tuolumne
the [Lytell] fork of the Tuolumne River (Tuolumne Meadows); Sierra Nevada Mountains, Yosemite National Park
Comment
UC592177
Sium suave
H. L. Mason
1929-9-21
5444
San Joaquin
Holt
Comment
UC570694
Solanum americanum
H. L. Mason
1929-11-27
4150
Santa Barbara
Carpenteria
Comment
UCD126821
Solanum americanum
Herbert L. Mason; Verne Grant
1947-6-26
13261
Solano
Cordelia Slough, Suisun Marsh.
Comment
UCSB44752
Solanum lanceolatum
Mason, Renee
1980-4-14
Santa Barbara
Gibralter Road, 1/4 mile before Rattlesnake Canyon parking area
Comment
UC570690
Solanum umbelliferum
Herbert L. Mason
1926-5-28
3269
Placer
5 mi above Auburn
Comment
UC570683
Solanum umbelliferum
H. L. Mason
1928-5-3
4485
Amador
opposite of Clark Creek (s bank of Cosumnes River); Cosumnes River
Comment
UC570692
Solanum umbelliferum
Herbert L. Mason
1924-6-19
1066
Plumas
slide just west of Gold Lake
Comment
UCD127061
Solanum xanti
Steve Mason; Pam Rector
1993-4-16
8
Orange
Laguna Niguel, Sea View Park Trail. Approximately 150 yards from trailhead on left side.
182
Comment
UC672221
Solidago elongata
H. L. Mason
1924-10-19
1124
San Francisco
Merced Lake , Merced Lake (San Francisco)
Comment
UC769973
Soliva sessilis
Herbert L. Mason
1934-3-25
7957
Sacramento
Keithly Ranch Sacramento Valley, Rio Linda, Keithly Ranch (Rio LInda, Sacramento Valley)
Comment
UC555566
Sorbus californica
H. L. Mason
1923-8-9
739
Tuolumne
w of Third Lake; Gaylor Lakes
Comment
UC555551
Sorbus californica
H. L. Mason
1923-9-15
Tuolumne
hill w of Tioga Pass
Comment
UC1100454
Sorghum halepense
Herbert L. Mason
1945-9-10
12723
Colusa
1 mi. n. Colusa (below causeway over Butte Sink spillway, e. bank Sacramento R.); Sacramento R.
Comment
UCD92752
Sorghum halepense
H. L. Mason
1945-9-19
12723
Colusa
1 mile N of Colusa. Below causeway over Butte Sink spillway, E bank of Sacramento River.
Comment
UC1099810
Sparganium angustifolium
Herbert L. Mason
1945-9-7
12689
Mono
pond below Tioga Lake
Comment
UCD94832
Sparganium emersum
Herbert L. Mason
1929-8-21
5401
Mendocino
Fort Bragg, Pudding Creek Slough.
Comment
UC1099923
Sparganium emersum var. emersum
Herbert L. Mason
1929-8-24
5401
Mendocino
Pudding Creek Slough; Fort Bragg
Comment
UC1099920
Sparganium emersum var. emersum
Herbert L. Mason
1953-7-8
14560
Plumas
4 mi nw Loyalton
Comment
UC1099921
Sparganium emersum var. emersum
Herbert L. Mason
1947-8-15
13562
Modoc
11 mi from Davis Creek (spring leading to w side of Goose Lake)
Comment
POM312967
Sparganium erectum subsp. stoloniferum
H. L. Mason
1946-7-27
12943
Lake
Margin of Clear Lake about one mile south of Lakeport.
Comment
UC1099805
Sparganium erectum subsp. stoloniferum
Herbert L. Mason
1945-8-17
12662
Solano
near Rio Vista (bank of Sacramento River); Sacramento River
Comment Read comments Sep 25 2008
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
UCSB44117
Spartium junceum
Mason, Renee
1980-4-14
Santa Barbara
Gibraltar Road, 1 mile after Rattlesnake Canyon parking area, on right side of road
Comment
SD49861
Sphaeralcea ambigua var. ambigua
Herbert L. Mason
1952-4-9
14230
San Bernardino
10 miles south of Needles.
Comment
UC555285
Spiraea densiflora
H. L. Mason
1929-10-4
5470
El Dorado
Glen Alpine
Comment
UC1076534
Spiranthes stellata
Herbert L. Mason and L. W. Reinecke
1937-7-22
11626
Tuolumne
w Hetch Hetchy; Sierra Nevada, Yosemite National Park, Swamp Lake
1584
Comment
UC673572
Spiranthes stellata
Herbert L. Mason
1923-7-21
639
Tuolumne
Poopenaut Valley Sierra Nevada, Yosemite National Park, vicinity of Hetch Het
Comment
UC673574
Spiranthes stellata
H. L. Mason
1923-7-25
649
Tuolumne
Mather Spring Sierra Nevada Mountains, Yosemite National Park, Hog Ranch
Comment
CAS-BOT-BC534890
Spirodela polyrhiza
Herbert L. Mason
1953-7-8
14561
Plumas
Four miles northwest of Loyalton
Comment
UC635137
Stachys ajugoides var. rigida
H. L. Mason
1932-7-21
7103
Humboldt
Big Lagoon
Comment
UCLA71370
Stachys bullata
Herbert L. Mason
1927-4-24
3700
San Mateo
mouth San Gregorio Creek
Comment
UC635697
Stachys chamissonis
H. L. Mason
1928-10-21
5005
Mendocino
near Fort Bragg; Pudding Creek
Comment
GH379858
Stanfordia californica
H. L. Mason
1935-5-2
10001
Unknown
One mile east of Lost Hills, northwest Kern County
Comment
CAS-BOT-BC202913
Staphylea bolanderi
H. L. Mason
1931-5-9
5875
Shasta
Pitt River
Comment
UC936170
Stellaria calycantha
Herbert L. Mason
1936-7-28
11419
Mono
Mount Dana Plateau
Comment
UC965631
Stellaria longipes var. longipes
Herbert L. Mason
1952-7-16
14366
Nevada
1 mi w Univ. of Calif. Trout Laboratory (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
UC965633
Stellaria longipes var. longipes
Herbert L. Mason
1952-7-16
14367
Nevada
1 mi w Univ. of Calif. Trout Laboratory (Sage Hen Creek); Sierra Nevada, Sage Hen Creek
1981
Comment
UC1076558
Stellaria longipes var. longipes
Herbert L. Mason
1938-7-7
11863
Tuolumne
nw of Hetch Hetchy; Sierra Nevada, Yosemite National Park
1584
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
OBI14932
Streptanthus breweri
Herbert L. Mason
1940-5-22
12308 a
Lake
3 mi E of Middletown
Comment
UC971991
Streptanthus breweri var. breweri
Herbert L. Mason
1952-6-19
14300
Colusa
area between Fouts Springs and Red Bridge Public Camp; Mendocino National Forest
Comment
CAS-BOT-BC87111
Streptanthus glandulosus subsp. glandulosus
H. L. Mason
1938-5-1
11747
Lake
Bartlett Mountain. 4 miles from Lucerne.
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
CAS-BOT-BC87335
Streptanthus hispidus
H. L. Mason
1938-5-3
11751
Contra Costa
Mount Diablo. Trail between Juniper Camp and Deer Flat.
990
Comment
UC1093675
Streptanthus insignis
Herbert L. Mason
1957-5-11
14734
San Benito
canyon entrance 4-5 mi e Hernandez; Clear Creek Canyon
Comment
GH422241
Streptanthus polygaloides
H. L. Mason
1936-05-15 - 1936-05-16
11118
Unknown
Summit of road between Coulterville and Bagby
701
Comment
GH422251
Streptanthus polygaloides
H. L. Mason
1959-5-24
14899
Unknown
in canyon of north fork of the Yuba River, exactly opposite Goodyears Bar (above north bank of river)
853
Comment
RSA0036091
Streptanthus polygaloides
Herbert L. Mason
1936-5-15
111118
Mariposa
Summit of road between Coulterville and Bagby.
701
Comment
UC673307
Streptanthus tortuosus
H. L. Mason
1933-9-2
7275
Amador
Silver Lake Sierra Nevada Mountains
Comment
CAS-BOT-BC242264
Stuckenia striata
Herbert Louis Mason
1955-8-14
14648
Modoc
S end of Goose Lake.
Comment
SEINET949758
Stuckenia striata
Herbert L. Mason, S. Galen Smith
1948-1
8327
Merced
Crane Ranch, south of junction of Merced and San Joaquin Rivers.
Comment
CAS-BOT-BC376019
Stylocline gnaphaloides
H. L. Mason
1933-4-22
7214
Monterey
Pajaro Hills
Comment
UC1077076
Stylocline gnaphaloides
Herbert L. Mason
1938-5-7
11783
Santa Barbara
Burton Mesa
Comment
UC581147
Stylocline gnaphaloides
H. L. Mason
1935-3-31
8255
Fresno
near Kett Station (e of Fresno)
Comment
UC581171
Stylocline masonii
H. L. Mason
1935-3-30
8252
San Luis Obispo
Cholame Valley
Comment
CAS-BOT-BC423007
Stylomecon heterophylla
H. L. Mason
1921-5-14
s.n.
Alameda
Haywards [Hayward]
Comment
UC635478
Stylomecon heterophylla
H. L. Mason
1928-4-1
4271
Contra Costa
hills n Mount Diablo (canyon back of Pittsburg); hills n of Mount Diablo
Comment
UC635479
Stylomecon heterophylla
H. L. Mason
1930-10-25
5775
Monterey
between Jolon and Santa Lucia Ranger Station (along the San Antonio River, in the foothills of the Santa Lucia Mountains); Santa Lucia Mountains, San Antonio River
Comment
GH384820
Styrax redivivus
H. L. Mason
1923-6-16
456
Unknown
La Combre Peak, Santa Barbara, by way of Rattlesnake Canyon and La Combre Trail
Comment
UC1076414
Symphoricarpos albus var. laevigatus
Herbert L. Mason
1924-11-23
1158
Contra Costa
Cashion
Comment
RSA55143
Symphoricarpos mollis
S. C. Mason
1910-8-29
s.n.
Santa Barbara
San Marcoss Pass.
Comment
UC1076412
Symphoricarpos mollis
Herbert L. Mason
1929-5-7
5264
Contra Costa
Moraga Ridge
Comment
SEINET8061689
Symphoricarpos mollis
S. C. Mason
1910-8-29
s.n.
Santa Barbara
San Marcos Pass.
Comment
UC1191852
Symphoricarpos rotundifolius var. rotundifolius
Herbert L. Mason
1948-7-18
13619
Modoc
Cedar Pass; Warner Mountains
Comment
UC1093913
Symphyotrichum chilense
Herbert L. Mason
1932-8-26
7151
Mendocino
1.5 mi n Albion
Comment
UC1093937
Symphyotrichum chilense
Herbert L. Mason
1932-8-26
7139
Mendocino
Navarro River
Comment
UC1192080
Symphyotrichum frondosum
Herbert L. Mason
1947-8-11
13487
Modoc
Kelley Hot Springs, on Alturas-Conby highway
Comment
CAS-BOT-BC98052
Symphyotrichum lentum
Herbert L. Mason
1945-9-18
12708
Sutter
on overflow lands of Sutter [By-pass] Bypass near bridge on Yuba City - Knight's Landing Highway
Comment
CAS-BOT-BC98506
Symphyotrichum spathulatum
Herbert L. Mason
1952-8-16
14489
Nevada
Meadow opposite University of California Trout Laboratory - Sage Hen Creek - Sierra Nevada
1981
Comment
UC1192088
Symphyotrichum spathulatum
Herbert L. Mason
1945-9-18
12708
Sutter
Sutter By-pass near bridge on Yuba City-Knight's Landing Highway
Comment
UC965578
Symphyotrichum spathulatum
Herbert L. Mason
1952-8-16
14489
Nevada
meadow opposite of University of California Trout Laboratory; Sierra Nevada, Sage Hen Creek
1981
Comment
CAS-BOT-BC15171
Symphyotrichum spathulatum var. spathulatum
Herbert Louis Mason
1947-8-9
13480
Modoc
East side of Fairchild Swamp, N of Alturas.
Comment
UC1192081
Symphyotrichum subulatum
Herbert L. Mason
1945-9-18
12703
Sutter
Sutter By-pass near bridge on Yuba City-Knight's Landing Highway
Comment
UC566896
Tauschia hartwegii
H. L. Mason
1926-5-28
3266
Placer
hills near Auburn (Auburn)
Comment
UC501344
Taxus brevifolia
Herbert L. Mason
1929-10-4
5479
El Dorado
15 mi above Placerville
Comment
UC1081555
Tetradymia canescens
Herbert L. Mason
1936-8-1
11480
Mono
Leevining Canyon Sierra Nevada, Yosemite National Park
Comment
UC1081544
Thalictrum fendleri
Herbert L. Mason
1936-7-12
11221
Mariposa
Peregoy Meadow Sierra Nevada, Yosemite National Park, Glacier Point
2255
Comment
CAS-BOT-BC180989
Thamnosma montana
H. L. Mason
1935-3-28
8178
San Bernardino
Three miles south of Barstow, Mojave Desert
Comment
GH347985
Thamnosma montana
H. L. Mason
1935-3-28
8173
Unknown
Three miles south of Barstow, Mojave Desert
Comment
UC581150
Thamnosma montana
H. L. Mason
1935-3-28
8173
San Bernardino
3 mi s of Barstow (Mojave Desert); Mojave Desert
Comment
UC555347
Thermopsis californica var. californica
Herbert L. Mason
1928-4-13
4318
Marin
hills n San Rafael
Comment
UC1056454
Thysanocarpus curvipes
Herbert L. Mason
1936-3-20
11011
Tuolumne
three mi above Tuolumne
Comment
UC570909
Tiarella trifoliata var. unifoliata
H. L. Mason
June 1930
5667
Sonoma
mouth of Gualala River
Comment
UC570916
Tiarella trifoliata var. unifoliata
Herbert L. Mason
1925-10-25
2243 a
Santa Cruz
edge Woodwardia Creek (Big Basin); , edge of Woodwardia Creek
Comment
GH381227
Tiarella unifoliata
H. L. Mason
1928-7-11
4888
Unknown
Canyon 2 miles north of Fort Ross
Comment
POM312566
Tiquilia nuttallii
H. L. Mason
1948-9-5
13680
Mono
Mono craters.
Comment
UC1101052
Tofieldia occidentalis subsp. occidentalis
Herbert L. Mason
1946-7-4
12887
Sonoma
Pitkin Marsh, between Santa Rosa and Forestville
Comment
UC965629
Tofieldia occidentalis subsp. occidentalis
Herbert L. Mason
1952-7-16
14341
Sierra
1 mi W of University of California Trout Laboratory; Sierra Nevada
Comment
UC672568
Tonella tenella
H. L. Mason
1926-3-21
2769
Lake
Middletown to Mt. St. Helena (via Toll House Canyon); Toll House Canyon
Comment
CAS-BOT-BC519588
Triantha occidentalis subsp. occidentalis
Herbert L. Mason
1950-7-15
14052
Trinity
Summit of grade, Scott Mountain
Comment
UC566728
Trichoptilium incisum
H. L. Mason
1928-3-10
4210
Riverside
Hidden Springs Canyon Coachella Mts.
Comment
UC570716
Trichostema lanceolatum
Herbert L. Mason
1926-10-16
3643
Los Angeles
Pasadena
Comment
GH402483
Trichostema oblongum
H. L. Mason
1925-7-27
2178
Unknown
Hog Ranch, Mather
Comment
UC566679
Trichostema oblongum
H. L. Mason
1925-7-27
2178
Tuolumne
Hog Ranch, Mather
Comment
RSA116718
Trientalis latifolia
H. L. Mason
1917-4-21
s.n.
San Mateo
Permental Creek
Comment
UC555620
Trifolium albopurpureum
H. L. Mason
1929-4-7
5181
Stanislaus
ca 10 mi above Oakdale; Sierra foothills
Comment
UC555617
Trifolium albopurpureum var. albopurpureum
H. L. Mason
1929-5-7
5261
Contra Costa
Moraga Ridge
Comment
UC555603
Trifolium barbigerum
H. L. Mason
1928-4-28
4392
Marin
Tiburon Peninsula
Comment
UC555601
Trifolium bifidum var. decipiens
H. L. Mason
1929-4-25
5205
Contra Costa
Marsh Creek Rd
Comment
UC555369
Trifolium ciliolatum
H. L. Mason
1929-4-7
5184
Stanislaus
ca 10 mi above Oakdale; Sierra foothills
Comment
UC555352
Trifolium depauperatum var. amplectens
H. L. Mason
1928-5-4
4501
El Dorado
Shingle Springs
Comment
UC555371
Trifolium depauperatum var. amplectens
H. L. Mason
1929-4-7
5173
Stanislaus
6 mi w Oakdale
Comment
UC555373
Trifolium depauperatum var. amplectens
H. L. Mason
1929-4-7
5169
Stanislaus
6 mi w Oakdale
Comment
UC555402
Trifolium depauperatum var. depauperatum
H. L. Mason
1928-4-13
4336
Napa
near spring (Reili School)
Comment
UC555354
Trifolium depauperatum var. truncatum
H. L. Mason
1929-4-25
5208
Contra Costa
Marsh Creek Rd
Comment
UC1191487
Trifolium eriocephalum var. eriocephalum
Herbert L. Mason
1948-7-17
13601
Siskiyou
Eastern Grass Lake
Comment
UC555452
Trifolium fucatum
H. L. Mason
1928-4-25
4371
San Francisco
Hunter's Point
Comment
UC555588
Trifolium kingii var. productum
H. L. Mason
1924-6-19
1060
Plumas
betw Graeagle and Gold Lake; rd
Comment
UC1111534
Trifolium longipes var. hansenii
Herbert L. Mason
1936-8-6
11503
Mariposa
Glacier Point Rd Sierra Nevada, Yosemite National Park, Paragoy Meadow
2255
Comment
UC555610
Trifolium microdon
H. L. Mason
1929-4-7
5175
Stanislaus
ca 10 mi above Oakdale; Sierra Nevada foothills
Comment
UC1056452
Trifolium monanthum subsp. parvum
Herbert Mason
1936-8-6
11502
Mariposa
Peregoy Meadow, Glacier Point Sierra Nevada, Yosemite National Park
2255
Comment
UC555614
Trifolium oliganthum
H. L. Mason
1928-5-6
4560
Alameda
Cedar Mtn
Comment
UC1179051
Trifolium variegatum
Herbert L. Mason
1939-7-11
12118
Tuolumne
1/2 mi below Swamp Lake (w of Hetch Hetchy); Sierra Nevada, Yosemite National Park
1554
Comment
UC555368
Trifolium variegatum
Herbert L. Mason
1927-7-31
4011
Santa Cruz
Zayante Creek Santa Cruz Mtns
Comment
UC555572
Trifolium willdenovii
H. L. Mason
1928-5-6
4568
Alameda
Cedar Mtn
Comment
UC555574
Trifolium willdenovii
H. L. Mason
1929-4-7
5185
Stanislaus
ca 10 mi above Oakdale; Sierra foothills
Comment
UC555570
Trifolium wormskioldii
H. L. Mason
1925-7-4
2145
Tuolumne
Mather Sierra Nevada, Yosemite National Park
Comment
CAS-BOT-BC245033
Triglochin concinna var. debilis
Herbert Louis Mason; Verne Grant
1947-7-12
13438
Modoc
Corporation Ranch Headquarters, N of Likely.
Comment
CAS-BOT-BC451790
Triglochin maritima
Herbert L. Mason
1946-6-28
12879
Alameda
Oakland Airport, mouth of San Leandro Creek
Comment
UC1099947
Triglochin maritima
Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith
1949-5-29
767
Modoc
e Kelly Hot Springs
Comment
UC1039622
Trillium angustipetalum
Herbert L. Mason
1940-7-7
12327
Tuolumne
s. of Miguel Meadow and Swamp Lake (Poison Meadow); Poison Meadow
Comment
UC672068
Trillium chloropetalum
Herbert L. Mason
1926-6-6
3377
Santa Cruz
Felton, San Lorenzo R.
Comment
UC672071
Trillium chloropetalum
Herbert L. Mason
1926-3-21
2779
Lake
Middletown to Mt. St. Helena via Toll House Canyon
Comment
UC635649
Triodanis biflora
H. L. Mason
1932-5-4
7061
Alameda
Laundry Farm Oakland Hills
Comment
UC1178990
Triphysaria micrantha
Herbert L. Mason
1938-4-14
11708
Tulare
4 mi e Exeter
Comment
UC1199899
Triteleia hyacinthina
Herbert L. Mason
1958-4-3
14899 a
Tehama
on Paynes Creek Road ca 4 mi e Red Bluff; Paynes Creek
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-BC67355
Tropidocarpum capparideum
H. L. Mason
1932-3-19
6818
Alameda
Road from Mountain House to Midway, west of Tracy.
Comment
JEPS54271
Tropidocarpum capparideum
Herbert L. Mason
1920-3-27
5115
Alameda
fields behind Mountain House (Altamont Pass); Altamont Pass
Comment
CAS-BOT-BC67397
Tropidocarpum gracile
H. L. Mason
1921-5-14
s.n.
Alameda
Haywards.
Comment
CAS-BOT-BC67405
Tropidocarpum gracile
H. L. Mason
1932-3-20
6842
Contra Costa
Antioch.
Comment
UC673304
Tropidocarpum gracile
H. L. Mason
1932-3-19
6817
Alameda
w Tracy (road from Mountain House to Midway)
Comment
UC673338
Tropidocarpum gracile
H. L. Mason
1929-3-31
5148
Contra Costa
in pastures Briones Valley
Comment
UC1191109
Tsuga heterophylla
Herbert L. Mason
1928-8-25
4927
Mendocino
mesa 1 mi e of mouth of Noyo River; Noyo
Comment
UC1241767
Typha
Herbert L. Mason
1948-5-31
13573
San Joaquin
three mi n Ripon; n of Ripon
Comment
UC240192
Typha latifolia
Herbert L. Mason
1958-8-6
Tuolumne
w Hetch Hetchy (Swamp Lake, Yosemite National Park); Sierra Nevada, Yosemite National Park, w of Hetch Hetchy
1584
Comment
UC241806
Typha latifolia
Herbert L. Mason
1949-7-7
14032
San Mateo
mouth of Pescadero Creek
Comment
UC1241805
Typha latifolia
Herbert L. Mason
1947-7-8
13302
Lassen
Irrigation ditch 5 mi e of Bieber (Highway 299, e of Hatchet Creek Summit); Highway 299
1219
Comment
UC632874
Uropappus lindleyi
H. L. Mason
1936-3-21
11032
Mariposa
four mi n Coulterville
Comment
UC635676
Utricularia macrorhiza
Herbert L. Mason
1929-9-9
5422
San Joaquin
Holt, lower San Joaquin R.
Comment
YM-YOSE66550
Utricularia vulgaris
Harry L. Mason
1938-7-10
11916
Tuolumne
SWAMP LAKE RESEARCH RESERVE, SOUTH ISLAND OF LAKE
Comment
JEPS58742
Vaccinium ovatum
Herbert L. Mason
1923-6-15
398
Santa Barbara
Summit of Harris Grade
Comment
UC634719
Vaccinium ovatum
H. L. Mason
1927-9-25
4101
Santa Barbara
Pine Ridge, slopes toward West Ranch Santa Cruz Island
Comment
UC634725
Vaccinium ovatum
H. L. Mason
1928-2-18
4165
Marin
Inverness Ridge Point Reyes
Comment
UC571036
Vaccinium uliginosum subsp. occidentale
Herbert L. Mason
1923-7-31
677
Tuolumne
Lyell Fork of the Tuolumne River Yosemite National Park, Tuolumne River
Comment
UC1081536
Valeriana californica
Herbert L. Mason
1936-7-23
11281
Tuolumne
Alpine slopes se of summit of Mt. Conness; Sierra Nevada, Yosemite National Park
3505
Comment
UC912421
Valeriana californica
Herbert L. Mason
1926-5-30
3323
Alpine
along road from Tahoe to Kit Carson Pass
1889
Comment
JEPS5114
Valerianella locusta
H. L. Mason
1932-4-28
El Dorado
betw Latrobe and Shingle Sprs.; betw. Latrobe and Shingle Sprs.
Comment
UC545812
Valerianella locusta
H. L. Mason
1932-4-25
7005
Amador
Ione to Latrobe Road bank of Cosumnes River
Comment
UC1191451
Velezia rigida
Herbert L. Mason
1948-5-31
13571
Stanislaus
near Knight's Ferry; Stanislaus River, near Knight's Ferry
Comment
CAS-BOT-BC391324
Velezia rigida
Herbert L. Mason
1948-5-31
13571
Stanislaus
Stanislaus River, near Knight's Ferry
Comment
UC635116
Verbena lasiostachys
Herbert L. Mason
1926-6-6
3365 a
Santa Cruz
Felton
Comment
UC1192057
Verbena litoralis
Herbert L. Mason, Verne Grant
1946-8-14
13039
Sutter
between Live Oak and Pennington
Comment
UCD124894
Veronica
Herbert L. Mason; S. Galen Smith
1948-8-9
8274
Santa Clara
small reservoir, Pacheco Pass, just west of summit.
Comment
UC1178867
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
UC672513
Veronica serpyllifolia subsp. humifusa
H. L. Mason
1925-7-30
2194
Tuolumne
ne of Mather (Smith Peak trail); Smith Peak trail
Comment
UC1191598
Vicia americana var. americana
Herbert L. Mason and Verne Grant
1947-7-21
8121
Modoc
n of Alturas (North Fork of Pit River, by bridge on Highway 395); North Fork of Pit River
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
UC1076057
Viola adunca
Herbert L. Mason
1947-5-17
14769
Unknown
Scott Mountain divide
Comment
UC581489
Viola adunca
H. L. Mason
1928-2-18
4163
Marin
Inverness Ridge; Point Reyes
Comment
UC581488
Viola beckwithii
H. L. Mason
1933-5-28
7239
Placer
Lower Truckee River
Comment
UC581521
Viola douglasii
H. L. Mason
1926-3-21
2772
Lake
between Middletown and Mount St. Helena
Comment
UC1076058
Viola glabella
Herbert L. Mason
1947-5-17
14768
Unknown
Scott Mountain divide
Comment
UC1076026
Viola hallii
Herbert L. Mason
1947-5-17
14781
Unknown
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
UC581539
Viola lobata subsp. lobata
Herbert L. Mason
1926-5-31
3351
Calaveras
Calaveras Big Trees
Comment
UC581502
Viola macloskeyi
H. L. Mason
1923-7-25
326
Mariposa
Creek 1 1/2 mi below Porcupine Flat (on Tioga Pass Road); Tioga Pass Road
2133
Comment Read comments Sep 27 2009
UC581538
Viola ocellata
Herbert L. Mason
1927-4-23
3696
San Mateo
Pescadero Creek near Bloomquists Mill; Pescadero Creek
Comment
UC1101417
Viola palustris
Herbert L. Mason
1946-5-19
12778
Mendocino
n of Fort Bragg (Cleone Lake); Cleone Lake
Comment
UC1093975
Viola purpurea subsp. quercetorum
Herbert L. Mason
1938-5-8
11801
Santa Barbara
vicinity of the summit of Figueroa Mountain
Comment
UC1076050
Viola sheltonii
Herbert L. Mason
1947-5-18
14784
Mendocino
lower slopes of Anthony Peak (w of Government Camp)
Comment
UC634820
Vitis californica
Herbert L. Mason
1925-6-29
2138
Tuolumne
Lake Eleanor
1219
Comment
UC912577
Vulpia bromoides
Herbert L. Mason
1931-4-24
5857
Alameda
Berkeley Hills; above Claremont Hotel
Comment
UCD94569
Vulpia microstachys var. pauciflora
Herbert L. Mason
1938-4-14
11715
Tulare
4 miles east of Exeter.
Comment
UC1100360
Vulpia myuros var. hirsuta
Herbert L. Mason and Malcolm A. Nobs
1949-4-27
722
Solano
Suisun State Game Refuge
Comment
UC1056302
Vulpia octoflora var. hirtella
Herbert L. Mason
1935-4-30
6276
Kern
Onyx
Comment
SD48055
Wolffia borealis
H. L. Mason
1955-6-8
14629
Shasta
In a marsh at the bridge, west edge of Fall River Mill.
Comment
UC702407
Wolffia columbiana
Herbert L. Mason
1946-6-9
12864
San Luis Obispo
Dune Lakes
Comment
UC1101235
Wolffiella lingulata
Herbert L. Mason and S. Galen Smith
1948-7-28
8227
Merced
2 mi n Los Banos; San Joaquin Valley, Los Banos Wildlife Refuge
Comment
UC629711
Wolffiella lingulata
H. L. Mason
1937-6-21
11548
San Joaquin
0.5 mi sw Holt, Roberts Island (Trappers Slough); Trappers Slough
Comment
UC635134
Wolffiella lingulata
H. L. Mason
1938-8-26
12072
San Joaquin
Trappers Slough San Joaquin River, Roberts Island (Roberts Island, delta of the San Joaquin River)
Comment
POM256992
Wyethia elata
H. L. Mason
1938-7-16
11952
Madera
4 miles south of Miami Ranger Station
1220
Comment
UC912510
Wyethia mollis
Herbert L. Mason
1923-8-7
719
Tuolumne
s-facing slope Dana Fork
Comment
UC566872
Yabea microcarpa
H. L. Mason
June 1930
5656
Sonoma
Mouth of Gualala River
Comment
UC1099978
Zannichellia palustris
Herbert L. Mason and Verne Grant
1947-7-12
13427
Modoc
n. Likely (s. loop of w. side rd.)
Comment
UC1109005
Zannichellia palustris
H. L. Mason
October 1929
Contra Costa
Nortonville
Comment
CAS-BOT-BC454204
Zannichellia palustris
Herbert L. Mason
1929-2-10
s.n.
Contra Costa
Nortonville
Comment
POM312979
Zannichellia palustris
H. L. Mason, Verne Grant
1947-7-8
13281
Lake
Bear Creek near Jct of Williams Hwy and Upper Lake Hwy. Lake County
Comment
UC1099977
Zannichellia palustris
Herbert L. Mason
1947-8-8
13471
Modoc
n.w. Alturas (s.w. edge of Big Sage Reservoir); Big Sage Reservoir
Comment
UC673368
Zigadenus venenosus var. venenosus
H. L. Mason
1928-5-6
4554
Alameda
Cedar Mountain Mount Hamilton Range
Comment