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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
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RSA986
Abies bracteata
J. T. Howell
1927-8-18
655
Monterey
Santa Lucia Mountains; Arroyo Seco River, near Santa Lucia Camp
670
Comment
CAS-BOT-BC78004
Abies concolor
John Thomas Howell; Gordon H. True
1970-7-14
5514
Sierra
At Verdi Peak Lookout, Verdi Range
2560
Comment
CAS-BOT-BC78010
Abies concolor
John Thomas Howell
1950-7-19
27077
Tulare
Bakeoven to Hessian Meadows
2529
Comment
CAS-BOT-BC383993
Abronia turbinata
John Thomas Howell
1938-8-7
14285
Mono
Whiskey Creek
2133
Comment
CAS-BOT-BC436989
Acaena pinnatifida var. californica
John Thomas Howell
1933-5-14
11285
Contra Costa
Hills east of St. Mary's College
Comment
CAS-BOT-BC447793
Acaena pinnatifida var. californica
John Thomas Howell
1956-6-17
31571
San Francisco
Summit of ridge of Bayview Hills
Comment
CAS-BOT-BC330637
Acer glabrum var. glabrum
John Thomas Howell
1925-6-10
1142
El Dorado
Lake Tahoe Region, Eagle Lake Trail
2042
Comment
CAS-BOT-BC334184
Acer negundo var. californicum
John Thomas Howell
1925-11-7
1549
Contra Costa
Between Pinehurst and Canyon Station, San Leandro Canyon
Comment
CAS-BOT-BC28800
Achillea millefolium
John Thomas Howell
1931-4-13
6311
Santa Barbara
Santa Cruz Island near west end.
Comment
CAS-BOT-BC260359
Achnatherum hymenoides
John Thomas Howell
1949-7-17
25424
Inyo
Little Cottonwood Creek
2987
Comment
CAS-BOT-BC218023
Achnatherum latiglume
John Thomas Howell
1962-7-9
38394
Kern
Near Park Headquarters, Greenhorn Mountains
1798
Comment
CAS-BOT-BC210689
Achnatherum lemmonii
John Thomas Howell
1962-6-17
37710
Plumas
Portola
1463
Comment
CAS-BOT-BC210712
Achnatherum lemmonii
John Thomas Howell; R. C. Barneby
1954-5-13
29542
Sierra
North Fork Yuba River, 4 miles below Downieville
807
Comment
GH361420
Achnatherum lemmonii
J. T. Howell
1943-8-3
18979
Unknown
Plaskett Meadows
1828
Comment
CAS-BOT-BC210803
Achnatherum nelsonii
John Thomas Howell; Gordon H. True
1970-7-29
47076
Tulare
South end of Cannell Meadow on road to Pine Flat, Kern Plateau
2316
Comment
CAS-BOT-BC210736
Achnatherum nelsonii
John Thomas Howell
1963-8-22
40295
Alpine
About 1/2 mile west of Monitor Pass
2529
Comment
CAS-BOT-BC216890
Achnatherum occidentale
John Thomas Howell
1947-7-24
23589
San Bernardino
Santa Ana River, San Bernardino Mountains
1920
Comment
CAS-BOT-BC216911
Achnatherum occidentale
John Thomas Howell; Gordon H. True
1970-7-14
5510
Sierra
At Verdi Peak Lookout, Verdi Range, Sierra County
2560
Comment
CAS-BOT-BC210847
Achnatherum occidentale subsp. californicum
John Thomas Howell
1951-6-28
27710
Plumas
Eureka Peak
2255
Comment
CAS-BOT-BC210878
Achnatherum occidentale subsp. californicum
John Thomas Howell
1960-8-19
36146
Tehama
Lassen Volcanic National Park. Brokeoff Mt. Trail
2590
Comment
CAS-BOT-BC218608
Achnatherum occidentale subsp. pubescens
John Thomas Howell; Gordon H. True
1966-7-12
71787
Kern
Bartolas Country 7.2 miles south of Cherry Hill and Cannell Meadow Roads, Sierra Nevada
2164
Comment
CAS-BOT-BC218075
Achnatherum pinetorum
John Thomas Howell
1947-8-10
23970
Inyo
Sam Mack Lake, Big Pines Lake
3657
Comment
CAS-BOT-BC391508
Aconitum columbianum subsp. columbianum
John Thomas Howell
1937-7-22
13323
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC391642
Actaea rubra
John Thomas Howell
1947-8-13
24063
Inyo
Big Pine Lakes Trail
2895
Comment
CAS-BOT-BC132896
Adenostoma fasciculatum
John Thomas Howell
1946-5-12
s.n.
Marin
Carson Ridge
Comment
CAS-BOT-BC132900
Adenostoma fasciculatum
John Thomas Howell
1930-12-28
5720
Marin
Slopes of Mt. Tamalpais above Mill Valley
Comment
CAS-BOT-BC69642
Adiantum capillus-veneris
John Thomas Howell
1954-11-3
30135
Monterey
Arroyo Seco River Canyon, Santa Lucia Mts.
Comment
CAS-BOT-BC110723
Aegilops cylindrica
John Thomas Howell
1952-6-15
28366
Siskiyou
Along road just east of Montague.
Comment
CAS-BOT-BC295591
Agnorhiza invenusta
John Thomas Howell
1962-7-10
38433
Kern
1.5 mile south of Summit, Greenhorn Mountains
1950
Comment
CAS-BOT-BC295618
Agnorhiza invenusta
John Thomas Howell
1942-7-24
17050
Tulare
East Fork of Kaweah River at Cold Spring
Comment
CAS-BOT-BC29519
Agoseris
John Thomas Howell
1969-8-26
45956
Tulare
Mineral King
2377
Comment
CAS-BOT-BC15496
Agoseris X elata
John Thomas Howell
1942-7-27
17306
Tulare
Cliff Creek between Deer Creek and Pinto Lake
Comment
CAS-BOT-BC21371
Agoseris aurantiaca var. aurantiaca
John Thomas Howell
1939-8-8
15188
Siskiyou
Black Mt., Marble Mts.
Comment
CAS-BOT-BC15342
Agoseris heterophylla
John Thomas Howell
1944-7-13
19746
Glenn
Summit Ridge, north of Black Butte
Comment
CAS-BOT-BC22958
Agoseris heterophylla
John Thomas Howell
1926-4-11
1825
Alameda
Rancho Repose, Arroyo Mocho
Comment
CAS-BOT-BC13273
Agoseris monticola
J. T. Howell
1940-8-1
15832
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC13238
Agoseris monticola
John Thomas Howell
1943-7-20
18629
Nevada
Near Castle Peak
Comment
CAS-BOT-BC13244
Agoseris monticola
J. T. Howell
1960-7-21
35802
Plumas
Lassen Volcanic National park, Drakesbad
1828
Comment
UC710561
Agoseris parviflora
John Thomas Howell
1943-7-20
18614
Nevada
Castle Peak.
Comment
CAS-BOT-BC127567
Agropyron cristatum
John Thomas Howell; Gordon H. True
1970-7-27
46933
Tulare
Sierra Nevada. Kern Plateau. Forest border of Big Meadow, on the east side at Joughin Camp. Near corral.
2377
Comment
UCD51985
Agrostis densiflora
John Thomas Howell
1945-7-4
21271
Marin
Inverness Ridge.
Comment
CAS-BOT-BC127403
Agrostis elliottiana
John Thomas Howell
1955-6-14
30426
Shasta
East of Whiskeytown.
Comment
CAS-BOT-BC127447
Agrostis elliottiana
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-4
52740
Calaveras
Near Wallace.
66
Comment
CHSC47598
Agrostis elliottiana
John Thomas Howell
1954-5-18
29801
Amador
Sierra Nevada. 2 miles nne of Buena Vista.
91
Comment
CAS-BOT-BC126955
Agrostis exarata
John Thomas Howell
1937-7-28
13604
Trinity
Trinity River Canyon near Eagle Creek.
Comment
CAS-BOT-BC127198
Agrostis exarata
John Thomas Howell
1947-6-4
23216
Marin
Near radio station. Point Reyes Peninsula.
Comment
CAS-BOT-BC127200
Agrostis exarata
John Thomas Howell
1945-6-24
21235
Marin
Mount Tamalpais. Bartho Retreat.
Comment
CAS-BOT-BC127209
Agrostis exarata
John Thomas Howell
1944-6-25
19661
Marin
Between Santa Venetia and Chinese Camp.
Comment
CAS-BOT-BC127212
Agrostis exarata
John Thomas Howell
1943-5-22
18125
Marin
Deer Park near Fairfax.
Comment
CAS-BOT-BC127255
Agrostis exarata
John Thomas Howell
1928-6-19
4033
Inyo
Sourdough Canon [Canyon], Panamint Mountains near Panamint City.
2286
Comment
RSA216187
Agrostis exarata
J. T. Howell
1966-7-20
41992
Marin
Area adjacent to the John Thomas Howell Botanical Garden, Tiburon.
Comment
UCD52388
Agrostis exarata
John Thomas Howell
1945-6-20
21080
Lake
Sawmill Flat, Bartlett Mountain.
1219
Comment
UCD52435
Agrostis exarata
John Thomas Howell
1926-7-26
2126
Plumas
near Prattville.
1371
Comment
CAS-BOT-BC139670
Agrostis gigantea
John Thomas Howell
1944-6-25
19644
Marin
Santa Ventia.
Comment
CAS-BOT-BC139692
Agrostis gigantea
John Thomas Howell
1928-6-20
4052
Inyo
Jail Canon [Canyon] near the Burro Mine, Panamint Mountains.
1066
Comment
CAS-BOT-BC139484
Agrostis hallii
John Thomas Howell
1943-5-9
17965
Marin
San Rafael Hills.
Comment
CAS-BOT-BC139455
Agrostis hendersonii
John Thomas Howell
1947-4-23
23062
Marin
Drakes Estero west of Mount Vision.
Comment
SEINET237853
Agrostis hendersonii
John Thomas Howell
1947-5-14
1411
Marin
Drakes Estero WNW of Mount Vision.
Comment
RSA299277
Agrostis idahoensis
J. T. Howell, Gordon H. True
1973-8-1
50232
Lassen
Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville
2134
Comment
CAS-BOT-BC138897
Agrostis pallens
John Thomas Howell; Gordon H. True
1966-7-13
41980
Tulare
Sierra Nevada. Kern Plateau. Dry Lake on Cherry Hill Road south of Big Meadow.
2377
Comment
CAS-BOT-BC139042
Agrostis pallens
John Thomas Howell
1939-7-16
s.n.
Marin
Fern Canyon, Mount Tamalpais.
Comment
RSA126481
Agrostis pallens
J. T. Howell
1943-7-11
s.n.
Marin
Potrero Meadow, Mt. Tamalpais
Comment
UC905062
Agrostis pallens
John Thomas Howell
1949-7-22
25587
Tulare
Guyot Creek Sierra Nevada
3169
Comment
CAS-BOT-BC138467
Agrostis variabilis
John Thomas Howell
1940-8-1
15802
Tulare
Between Reflection Lake and Harrison Pass.
Comment
CAS-BOT-BC175412
Allenrolfea occidentalis
John Thomas Howell
1973-7-25
50013
Merced
Ingomar
30
Comment
CAS-BOT-BC466722
Allium cratericola
John Thomas Howell
1962-7-11
38556
Kern
Northwest slope of Black Mt. Greenhorn Mountains
2133
Comment
CAS-BOT-BC469339
Allium fimbriatum var. fimbriatum
John Thomas Howell; Gordon H. True
1971-6-15
47716
Kern
0.5 mile south of Bodfish Gap on road to Havilah.
1097
Comment
CAS-BOT-BC241
Allium howellii
John Thomas Howell
1931-3-21
5915
Kern
Maricopa Grade, 1 mile from Maricopa
Comment
CAS-BOT-BC472781
Allium neapolitanum
John Thomas Howell
1969-4-20
45513
Marin
2nd and Shaver Streets, San Rafael
Comment
CAS-BOT-BC476607
Allium unifolium
John Thomas Howell
1931-5-12
6469
Contra Costa
Oakland Hills
Comment
CAS-BOT-BC478829
Allium vineale
John Thomas Howell
1976-6-22
51809
Sonoma
Sonoma Joe's Restaurant, Petaluma
Comment
CAS-BOT-BC170695
Alnus rhombifolia
John Thomas Howell
1959-9-21
34744
Plumas
Belden. Sierra Nevada
701
Comment
RSA144
Alnus rhombifolia
J. T. Howell
1927-7-21
452
Orange
Santa Ana River, Rancho Santa Ana.
152
Comment
CAS-BOT-BC138084
Alopecurus aequalis var. aequalis
John Thomas Howell
1950-7-14
26870
Tulare
Sierra Nevada. South Fork of Kern River. Bakeoven Meadow.
2468
Comment
CAS-BOT-BC138149
Alopecurus aequalis var. aequalis
John Thomas Howell
1960-8-20
36223
Tehama
Lassen Volcanic National Park. Morgan.
1463
Comment
CAS-BOT-BC138000
Alopecurus geniculatus
John Thomas Howell
1960-7-22
35882
Plumas
Lassen Volcanic National Park. Drakesbad.
1828
Comment
POM303725
Amaranthus deflexus
J. T. Howell
1944-7-23
19852
Marin
Along sidewalks, San Rafael.
15
Comment
SEINET7922931
Amaranthus retroflexus
J. T. Howell
1963-8-20
40123
Kern
South Fork Valley, about 2 miles NE of Weldon.
808
Comment
CAS-BOT-BC13657
Ambrosia acanthicarpa
John Thomas Howell
1952-10-27
28890
Tulare
Eleven Range View Point, Sequoia Park
1590
Comment
CAS-BOT-BC44904
Ambrosia chamissonis
John Thomas Howell
1957-9-19
32968
San Francisco
North side of Lone Mountain
Comment
CAS-BOT-BC55609
Ambrosia confertiflora
John Thomas Howell
1956-11-4
31948
San Francisco
Waterfront St near Mission Rock Terminal
Comment
CAS-BOT-BC272943
Ambrosia salsola
John Thomas Howell
1930-5-13
4988
Kern
5 miles north of Ricardo
Comment
POM261632
Amelanchier pallida
J. T. Howell
1940-6-1
15569
Mariposa
Snow Creek Trail
1677
Comment
CAS-BOT-BC135672
Amelanchier utahensis
John Thomas Howell
1930-6-8
5287
Sonoma
8.5 miles n. of Bodega Bay
Comment
CAS-BOT-BC136786
Amelanchier utahensis
John Thomas Howell; Gordon True; Walter Knight; Irja Knight
1969-6-24
2436
Plumas
Vicinity of mouth of Butterfly Creek
883
Comment
CAS-BOT-BC142557
Amelanchier utahensis
John Thomas Howell
1963-8-20
40172
Inyo
Whitney Portal - Sierra Nevada
2545
Comment
CAS-BOT-BC143010
Amelanchier utahensis
John Thomas Howell
1940-8-9
16073
Fresno
Between junction and Vidette Meadows - Bubbs Creek
Comment
CAS-BOT-BC222219
Amsinckia
John Thomas Howell
1934-4-8
11826
Contra Costa
South of Antioch
Comment
CAS-BOT-BC222231
Amsinckia
John Thomas Howell
1933-3-29
10916
Contra Costa
Pittsburg
Comment
GH424782
Amsinckia
J. T. Howell
1933-4-15
11225
Unknown
St. Mary's College
Comment
CAS-BOT-BC54158
Amsinckia menziesii
John Thomas Howell
1934-6-16
12218
Modoc
5 mi. from Adin on road to Alturas.
Comment
CAS-BOT-BC54197
Amsinckia menziesii
John Thomas Howell
1934-6-13
12085
Modoc
Surprise Valley near Fort Bidwell.
Comment
CAS-BOT-BC45123
Anaphalis margaritacea
John Thomas Howell
1940-7-29
15677
Fresno
Between Charlotte Creek and Junction Meadow, Bubbs Creek
Comment
CAS-BOT-BC45159
Anaphalis margaritacea
John Thomas Howell
1956-6-10
31533
San Francisco
North slopes on Bay View Hills
Comment
UC485556
Ancistrocarphus filagineus
Thomas Howell
1893-4-11
Kern
Asphalto
Comment
UC485559
Ancistrocarphus filagineus
Thomas Howell
1883-5-1
Contra Costa
Antioch
Comment
GH355506
Andropogon virginicus
J. T. Howell & J. W. Stacey
1936-7-26
12671
Unknown
Pitkin Marsh, 5 miles north of Sebastopol, Sonoma County.
Comment
CAS-BOT-BC271456
Anisocarpus madioides
John Thomas Howell
1945-6-20
21099
Lake
Near Pinnacle Rock, Bartlett Mountain
Comment
CAS-BOT-BC271413
Anisocarpus scabridus
John Thomas Howell
1943-8-8
19174
Mendocino
Anthony Peak
Comment
CAS-BOT-BC64774
Anisocoma acaulis
John Thomas Howell; Gordon H. True
1968-5-13
44296
Tulare
Cherry Hill Road, Poison Meadow Creek Canyon, Kern Plateau
1981
Comment
CAS-BOT-BC63869
Antennaria argentea
John Thomas Howell
1925-6-14
1153
El Dorado
Emerald Bay Camp, Lake Tahoe
Comment
UCR89353
Antennaria dimorpha
J. T. Howell, G. H. True
1970-6-24
46754
Tulare
Kern Plateau, Sierra Nevada Mtns., Manter Meadow
2200
Comment
CAS-BOT-BC77243
Antennaria microphylla
John Thomas Howell
1946-7-14
22258
Inyo
Rock Creek Lake Basin. Mosquito Flat.
3139
Comment
CAS-BOT-BC79887
Antennaria microphylla
John Thomas Howell
1940-7-30
15712
Tulare
East Lake
2926
Comment
CAS-BOT-BC84736
Antennaria umbrinella
John Thomas Howell
1946-7-24
22703
Inyo
Mono Mesa
3657
Comment
CAS-BOT-BC84750
Antennaria umbrinella
John Thomas Howell
1950-7-22
27240
Tulare
Summit ridge, Olancha Peak
3688
Comment
CAS-BOT-BC280665
Anthoxanthum occidentale
John Thomas Howell
1930-7-27
5396
Sonoma
1 mile north of Ft. Ross
Comment
CAS-BOT-BC137702
Anthoxanthum odoratum
John Thomas Howell
1944-6-14
19628
San Francisco
San Francisco. Laurel Hill Cemetery.
Comment
UC1040784
Anthriscus caucalis
John Thomas Howell
1956-5-26
31448
Santa Clara
Smith Creek; Mt. Hamilton
Comment
RSA223677
Anthriscus caucalis
J. T. Howell
1957-6-17
32689
San Francisco
Presidio, along south wall
Comment
CAS-BOT-BC237902
Antirrhinum ovatum
John Thomas Howell
1948-6-14
24340
San Luis Obispo
Headwaters of Bitterwater Creek, north end of Carrizo Plain
609
Comment
RSA43307
Apiastrum angustifolium
J. T. Howell
1948-6-15
24356
San Luis Obispo
Red Hills southeast of Shandon.
762
Comment
CAS-BOT-BC392138
Aquilegia formosa
John Thomas Howell
1958-7-25
33907
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC395030
Aquilegia formosa
John Thomas Howell
1944-8-16
20598
Tuolumne
Mono Pass Trail
Comment
CAS-BOT-BC405358
Aquilegia formosa
John Thomas Howell
1923-6-22
138
Mariposa
Meadow at the Indian Bridge, Wawona
1219
Comment
CAS-BOT-BC405757
Aquilegia formosa
John Thomas Howell
1951-7-22
28149
Tulare
Tranger Creek, sequoia park, on Mineral King road
1371
Comment
RSA0129297
Arabis lemmonii
J. T. Howell
1948-7-28
25097
Tulare
Center Basin.
3659
Comment
RSA88494
Arabis lyallii
J. T. Howell
1951-7-21
28072
Tulare
Marble, White Chief region; Mineral King and Vicinity.
2896
Comment
RSA201482
Arceuthobium abietinum
J. T. Howell
1962-9-24
38844
Kern
Greenhorn mtn. On Abies magnifica var. shastensis north side of Sunday Peak.
2378
Comment
UC1042594
Arceuthobium americanum
John Thomas Howell
1950-7-18
27038
Tulare
Bakeoven Meadows Sierra Nevada
2468
Comment
CAS-BOT-BC407702
Arceuthobium americanum
John Thomas Howell
1960-8-22
36405
Shasta
Pond N of Summit Lake
2042
Comment
CAS-BOT-BC410082
Arceuthobium occidentale
John Thomas Howell
1955-6-14
30440
Butte
near Magalia
731
Comment
CAS-BOT-BC56911
Arctostaphylos
John Thomas Howell
1934-3-3
11747
Sonoma
Between Fort Ross and Stewart's Point
Comment
CAS-BOT-BC24119
Arctostaphylos auriculata
John Thomas Howell
1931-5-12
6477
Contra Costa
Nortonville
Comment
CAS-BOT-BC24087
Arctostaphylos bakeri
John Thomas Howell
1933-4-2
10954
Sonoma
2 miles east of Occidental
Comment
CAS-BOT-BC25320
Arctostaphylos bakeri
John Thomas Howell
1933-4-2
10956
Sonoma
Serpentine ridge, 2 miles E of Occidental
Comment
UC518012
Arctostaphylos bakeri
John Thomas Howell
1933-4-2
10956
Sonoma
2 mi e Occidental
Comment
CAS-BOT-BC24016
Arctostaphylos canescens subsp. canescens
John Thomas Howell
1930-7-13
5362
Napa
Crater Country
Comment
CAS-BOT-BC24028
Arctostaphylos canescens subsp. canescens
John Thomas Howell
1926-2-28
1652
Marin
Mt. Tamalpais, Rock Spring Trail
Comment
CAS-BOT-BC23886
Arctostaphylos canescens subsp. sonomensis
John Thomas Howell
1937-4-11
12896
Sonoma
Rincon Ridge NE of Santa Rosa
Comment
CAS-BOT-BC25152
Arctostaphylos crustacea
John Thomas Howell
1953-2-1
28918
Santa Cruz
Sand hills about 1 mile NW of Scott Valley
Comment
CAS-BOT-BC25116
Arctostaphylos crustacea subsp. insulicola
John Thomas Howell
1931-4-10
6229
Santa Barbara
Ravenswood, Santa Cruz Island.
Comment
CAS-BOT-BC25070
Arctostaphylos crustacea subsp. subcordata
John Thomas Howell
1931-4-14
6370
Santa Barbara
China Harbor, Santa Cruz Island.
Comment
GH342788
Arctostaphylos cushingiana f. repens
J. T. Howell
1944-6-4
19353
Unknown
Inverness Ridge
Comment
CAS-BOT-BC23371
Arctostaphylos glandulosa subsp. cushingiana
John Thomas Howell
1955-5-17
30159
Monterey
chaparral on Junipero Serra Peak, Santa Lucia Mts.
Comment
SBBG41732
Arctostaphylos glandulosa subsp. cushingiana
J. T. Howell
1970-3-31
46498
Monterey
Carmel River, Carmel Valley Village
Comment
CAS-BOT-BC23254
Arctostaphylos glandulosa subsp. glandulosa
John Thomas Howell
1930-6-15
5311
Alameda
Rocky summit of Grizzley Peak, Berkeley Hills
Comment
GH350364
Arctostaphylos glandulosa var. cushingiana
J. T. Howell
1933-3-19
10866 A
Unknown
Slopes at head of Muir Woods
Comment
CAS-BOT-BC39074
Arctostaphylos insularis
John Thomas Howell
1931-4-12
6308
Santa Barbara
Santa Cruz Island, head of Cochie Canyon
Comment
UCD52160
Arctostaphylos manzanita
John Thomas Howell
1975-6-15
51097
Butte
In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico.
396
Comment
UCD52243
Arctostaphylos manzanita
John Thomas Howell
1976-4-2
51563
Butte
In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico.
396
Comment
UCD52246
Arctostaphylos manzanita
John Thomas Howell
1976-4-2
51564
Butte
In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico.
396
Comment
CAS-BOT-BC38754
Arctostaphylos manzanita subsp. manzanita
John Thomas Howell
1956-2-26
30917
Marin
Along old railroad grade in W. Fk. of Fern Canyon, Mt. Tamalpais
Comment
CAS-BOT-BC38882
Arctostaphylos manzanita subsp. manzanita
J. T. Howell
1931-3-14
5772
Sonoma
Vine Hill District, 10 miles west of Santa Rosa.
Comment
CAS-BOT-BC38483
Arctostaphylos mewukka subsp. truei
John Thomas Howell
1975-7-22
51358
Plumas
2 miles northwest of Spring Garden
1173
Comment
CAS-BOT-BC45588
Arctostaphylos myrtifolia
John Thomas Howell
1960-11-10
36469
Amador
Near Ione.
Comment
A350754
Arctostaphylos nevadensis
J. T. Howell
1943-7-17
18506
Unknown
West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC46457
Arctostaphylos patula
John Thomas Howell
1939-8-3
15021
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
CAS-BOT-BC46665
Arctostaphylos patula
John Thomas Howell; Gordon H. True
1970-5-27
46541
El Dorado
N. Leonardi Spring.
1280
Comment
UC1602054
Arctostaphylos patula
Thos. Howell
1889-4-13
1378
Del Norte
near Klamath River
Comment
RSA1387
Arctostaphylos rainbowensis
J. T. Howell
1928-7-9
399
Riverside
Temecula Grade, 4 miles S of Temecula.
396
Comment
POM203935
Arctostaphylos tomentosa subsp. subcordata
J. T. Howell
1931-4-14
6369
Santa Barbara
Santa Cruz Island. China Harbor.
Comment
GH362174
Arctostaphylos truei
J. T. Howell
1976-4-2
51571
Unknown
Injun Jim Campground, North Feather River
609
Comment
RSA381139
Arctostaphylos truei
J. T. Howell
1975-6-15
51109
Butte
Skyway near Billie Road, Paradise.
609
Comment
RSA584780
Arctostaphylos truei
J. T. Howell
1976-7-14
51817
Butte
Just northeast of Pulga Bridge.
418
Comment
UCD51945
Arctostaphylos truei
John Thomas Howell
1975-6-15
51091
Butte
In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County.
396
Comment
UCD51948
Arctostaphylos truei
John Thomas Howell
1975-6-15
51086
Butte
In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County.
396
Comment
CAS-BOT-BC46788
Arctostaphylos uva-ursi
John Thomas Howell
1943-7-4
18270
Marin
near Ledum Marsh
Comment
CAS-BOT-BC46824
Arctostaphylos virgata
John Thomas Howell
1944-3-26
19342
Marin
Inverness Ridge
Comment
LA42196
Arctostaphylos viscida subsp. mariposa
John Thomas Howell;
1931-2-23
5753
Mariposa
near Bear Valley
Comment
CAS-BOT-BC47138
Arctostaphylos viscida subsp. mariposa
John Thomas Howell
1931-2-23
5753
Mariposa
On rim of Merced River Canyon, 1 mi. from Bear Valley on road to Bagby.
Comment
CAS-BOT-BC47373
Arctostaphylos viscida subsp. viscida
John Thomas Howell
1975-6-15
51086
Butte
about 2 miles from Paradise on Skyway to Chico
396
Comment
CAS-BOT-BC48293
Arctostaphylos viscida subsp. viscida
John Thomas Howell
1975-6-15
51106
Butte
Billie Road at Cliff Drive, Paradise
609
Comment
CAS-BOT-BC467189
Arenaria serpyllifolia var. serpyllifolia
John Thomas Howell
1935-5-5
12602
Sonoma
Spontaneous in M.S. Baker garden near Kenwood
Comment
CAS-BOT-BC137614
Aristida adscensionis
John Thomas Howell
1960-3-22
35142
San Luis Obispo
San Luis Obispo. Santa Lucia Mountains. Cuesta Park.
Comment
CAS-BOT-BC17390
Armoracia rusticana
John Thomas Howell
1961-9-25
36960
Plumas
Sierra Nevada. Portola.
1478
Comment
CAS-BOT-BC82276
Arnica chamissonis
John Thomas Howell; Gordon H. True
1970-7-30
47157
Tulare
Southwest end of Big Meadow just east of Cherry Hill Road, Kern Plateau
2377
Comment
CAS-BOT-BC82253
Arnica chamissonis
John Thomas Howell
1949-7-30
25935
Tulare
The Tunnel
2712
Comment
CAS-BOT-BC82318
Arnica cordifolia
John Thomas Howell
1938-8-2
13997
Placer
5 miles n. of Brockway
Comment
CAS-BOT-BC295868
Arnica dealbata
John Thomas Howell
1960-8-21
36309
Shasta
Lassen Volcanic National Park. Sulphur Works
2133
Comment
CAS-BOT-BC82455
Arnica discoidea
John Thomas Howell
1925-4-5
944
Marin
Pipeline Trail
Comment
CAS-BOT-BC82500
Arnica discoidea
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54222
Plumas
About 5 miles southeast of Mt. Hough on the road to Quincy
1584
Comment
CAS-BOT-BC85126
Arnica mollis
John Thomas Howell
1944-8-8
20107
Tuolumne
Between Elizabeth Lake and Tuolumne Meadows
Comment
CAS-BOT-BC89980
Arnica mollis
John Thomas Howell
1944-8-10
20239
Mono
Glacier Canyon, Mt. Dana
Comment
CAS-BOT-BC85076
Arnica nevadensis
John Thomas Howell
1943-8-10
19250
Glenn
Black Butte
Comment
CAS-BOT-BC85104
Arnica nevadensis
John Thomas Howell
1942-8-5
17757
Tulare
Big Arroyo near Little Five Lakes
Comment
CAS-BOT-BC85110
Arnica nevadensis
John Thomas Howell
1963-7-9
39659
El Dorado
Sierra Nevada - Near foot of Echo Summit grade, 1 mile southwest of Meyers.
2011
Comment
CAS-BOT-BC90122
Artemisia biennis
John Thomas Howell
1961-9-24
36915
Plumas
Feather River bed sw. of Beckwourth
1487
Comment
CAS-BOT-BC90136
Artemisia biennis
John Thomas Howell
1927-10-29
3186
Los Angeles
Salt marshes near Alamitos Bay
15
Comment
CAS-BOT-BC93971
Artemisia douglasiana
John Thomas Howell; Gordon H. True
1969-9-30
46374
Tulare
Sierra Nevada - Cherry Hill Road 4 miles from Burton Camp, canyon of Poison Meadow Creek, Kern Plateau
2194
Comment
CAS-BOT-BC90491
Artemisia douglasiana
John Thomas Howell
1926-11-14
2253
Sonoma
Two miles east of Santa Rosa
Comment
CAS-BOT-BC90735
Artemisia ludoviciana subsp. incompta
John Thomas Howell
1940-7-30
15692
Tulare
East Lake
2926
Comment
CAS-BOT-BC90897
Artemisia pycnocephala
John Thomas Howell
1963-9-4
40333
Monterey
Sand dunes, Moss Landing
Comment
CAS-BOT-BC93672
Artemisia pycnocephala
John Thomas Howell
1927-3-18
2287
San Francisco
Summit of Lone Mountain, San Francisco
121
Comment
CAS-BOT-BC93613
Artemisia rothrockii
John Thomas Howell
1958-8-14
34442
Madera
Sierra Nevada - Ne. of Sadler Lake - East Fork of Granite Creek
3200
Comment
CAS-BOT-BC97222
Artemisia spinescens
John Thomas Howell
1928-4-2
3669
Inyo
[Dante's] Dantes View of Death Valley, Black Mts.
Comment
CAS-BOT-BC97236
Artemisia suksdorfii
John Thomas Howell
1931-6-17
6731
Del Norte
5 miles s. of Crescent City
Comment
CAS-BOT-BC93568
Artemisia tridentata subsp. tridentata
John Thomas Howell
1970-11-9
47552
Kern
Sierra Nevada - 1.5 miles east of Onyx
853
Comment
CAS-BOT-BC99289
Artemisia tridentata subsp. vaseyana
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-10
54433
Amador
Small lake on Carson Pass Road just west of Carson Spur near Kirkwood - Sierra Nevada
2407
Comment
CAS-BOT-BC400497
Asarum caudatum
John Thomas Howell
1925-3-1
767
Alameda
San Leandro Canon [Canyon], Oakland Hills
Comment
RSA563
Asclepias eriocarpa
J. T. Howell
1927-7-16
417
Orange
Botany Garden, Rancho Santa Ana.
152
Comment
SEINET10580440
Asclepias eriocarpa
John Thomas Howell
1940-6-29
Howell 15586
Lake
Middletown
Comment
CAS-BOT-BC478842
Asparagus officinalis
John Thomas Howell
1954-9-5
30029
San Joaquin
Along highway near Holt
Comment
CAS-BOT-BC177505
Astragalus austiniae
John Thomas Howell
1943-7-18
18540
Nevada
Castle Peak
Comment
UC517971
Astragalus claranus
John Thomas Howell
1931-4-19
6442
Napa
Conn Valley
Comment
CAS-BOT-BC187302
Astragalus lentiginosus var. kernensis
John Thomas Howell
1950-7-17
27028
Tulare
Templeton Meadows
2590
Comment
CAS-BOT-BC187458
Astragalus lentiginosus var. variabilis
John Thomas Howell
1927-6-12
2506
San Bernardino
Deadman's Point, Mojave Desert
914
Comment
RSA44203
Astragalus monoensis
J. T. Howell
1948-8-1
25278
Mono
3 miles south of Crestview.
Comment
CAS-BOT-BC178014
Astragalus nuttallii var. nuttallii
John Thomas Howell; Alice Eastwood
1935-1-28
1926
Monterey
Point Pinos
Comment
CAS-BOT-BC192804
Astragalus pauperculus
John Thomas Howell
1927-4-5
2304
Shasta
Near Frazier Corners, 10 miles ne. of Redding
Comment
SEINET948657
Astragalus pulsiferae
John Thomas Howell
1955-1
30818
Lassen
East side of Beckwourth Pass. Sierra Nevada
1494
Comment
CAS-BOT-BC193114
Astragalus pycnostachyus var. pycnostachyus
John Thomas Howell
1945-8-19
21433
Marin
At head of Drakes Bay
Comment
RSA28249
Athyrium americanum
J. T. Howell
1951-7-18
27890
Tulare
Franklin Pass Trail, Mineral King and vicinity
3354
Comment
CAS-BOT-BC69511
Athyrium filix-femina var. californicum
John Thomas Howell
1968-7-20
44572
Tuolumne
Near White Wolf on Tioga Pass Road.
Comment
CAS-BOT-BC17398
Athysanus pusillus
John Thomas Howell
1965-4-25
41104
Madera
Sierra Nevada. 3 miles northeast of Coarsegold.
762
Comment
CAS-BOT-BC44941
Athysanus pusillus
John Thomas Howell
1972-4-25
s.n.
Mariposa
In campground between Camp Curry and Happy Isles, Yosemite Valley
1219
Comment
CAS-BOT-BC16339
Athysanus unilateralis
John Thomas Howell
1931-3-29
6025
San Benito
11 miles from Hernandez on road to San Benito.
Comment
CAS-BOT-BC168633
Atriplex
John Thomas Howell
1967-11-4
44073
Tulare
About 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC170599
Atriplex
John Thomas Howell; Gordon H. True
1967-7-6
43238
Tulare
Vernal pool nutural area in Valley Grassland, about 4 1/2 miles east-northeast of Pixley, near SW corner of area.
83
Comment
CDA23229
Atriplex argentea var. mohavensis
J. T. Howell
1973-10-31
50265
San Joaquin
Along Highway 50 at Hospital Creek southeast of Vernalis.
0
Comment
UC1106144
Atriplex californica
John Thomas Howell
1944-9-10
20734
Marin
n Inverness (Shell Beach); n of Inverness, Shell Beach
Comment
UCD97294
Atriplex canescens
John Thomas Howell; Gordon H. True
1971-6-16
47882
Kern
along Kelso Creek 7 miles south of Weldon on road to Kelso Valley.
914
Comment
CAS-BOT-BC170197
Atriplex canescens subsp. canescens
John Thomas Howell
1927-10-22
3161
Orange
In hills on n. side of Santa Ana Canyon.
152
Comment
CAS-BOT-BC168291
Atriplex canescens var. canescens
John Thomas Howell
1927-7-9
2709
San Bernardino
Cactus Flat, desert side of San Bernardino Mts.
1828
Comment
CAS-BOT-BC168531
Atriplex confertifolia
John Thomas Howell
1930-6-28
5324
San Joaquin
Banta Junction, about 1 mile from Banta
Comment
RSA8515
Atriplex joaquinana
J. T. Howell
1933-7-20
11440
Alameda
Livermore Valley near Livermore
Comment
CAS-BOT-BC176496
Atriplex polycarpa
John Thomas Howell
1927-11-13
3197
Kern
Red Rock [Canon] Canyon
762
Comment
CAS-BOT-BC176583
Atriplex polycarpa
John Thomas Howell
1967-11-4
44083
Tulare
About 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC176753
Atriplex serenana var. serenana
John Thomas Howell
1973-11-4
50326
Monterey
King City
100
Comment
CAS-BOT-BC180868
Atriplex serenana var. serenana
John Thomas Howell
1969-10-20
46475
Stanislaus
5 miles from La Grange on road to Modesto - Sierra Nevada
60
Comment
UC473576
Atriplex triangularis
John Thomas Howell
1931-10-31
8163
Contra Costa
Bay Point
Comment
CAS-BOT-BC99871
Baccharis sergiloides
John Thomas Howell
1928-1-30
3313
Riverside
Cottonwood Spring, Colorado Desert
Comment
CAS-BOT-BC106579
Baileya pleniradiata
John Thomas Howell
1927-8-1
2892
San Bernardino
Between Morongo Valley and Warren's Well, s. Mojave Desert
914
Comment
CAS-BOT-BC100014
Balsamorhiza deltoidea
John Thomas Howell
1962-5-23
37404
Kern
Kern River Canyon near Miracle Hot Springs
731
Comment
CAS-BOT-BC106497
Balsamorhiza hookeri
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49167
Lassen
In open yellow pine forest, Elysian Valley northwest of Janesville - Sierra Nevada
1325
Comment
CAS-BOT-BC106459
Balsamorhiza hookeri
John Thomas Howell
1978-4-14
52860
Plumas
On edge of pine woods, west of Portola - Sierra Nevada
Comment
CAS-BOT-BC16412
Barbarea orthoceras
John Thomas Howell
1943-8-3
18939
Glenn
Plaskett Meadows.
1828
Comment
CAS-BOT-BC16444
Barbarea orthoceras
John Thomas Howell
1941-8-3
16717
Madera
Near Garnett Lake.
2956
Comment
GH378733
Barbarea orthoceras
J. T. Howell
1975-6-29
51325
Unknown
Goodhill & Diablo roads, Kentfield
Comment
UC1176817
Barbarea orthoceras
John Thomas Howell
1950-3-28
26305
Marin
Pt. Reyes Peninsula on road to lighthouse
Comment
CAS-BOT-BC145779
Beckmannia syzigachne
John Thomas Howell
1946-6-13
22019
Marin
Hicks Valley.
Comment
CAS-BOT-BC75570
Berberis dictyota
John Thomas Howell
1963-6-22
39559
Monterey
Priest Valley.
685
Comment
CAS-BOT-BC75767
Berberis pinnata
John Thomas Howell
1969-4-22
45540
Amador
Sierra Nevada. Volcano.
609
Comment
RSA800
Bidens laevis
J. T. Howell
1927-10-23
768
Orange
Santa Ana River bottom, Rancho Santa Ana
152
Comment
CAS-BOT-BC413093
Bistorta bistortoides
John Thomas Howell
1942-8-1
17535
Tulare
Sky Parlor Meadow, Chagoopa Plateau
Comment
JEPS53177
Boechera breweri
John Thomas Howell
1927-4-7
2311
Shasta
above McCloud River (on Potter Creek, w slope of Horse Mt.); Horse Mt., Potter Creek
304
Comment
CAS-BOT-BC15940
Boechera breweri subsp. breweri
John Thomas Howell
1937-5-19
12955
San Benito
The Pinnacles.
Comment
CAS-BOT-BC16139
Boechera constancei
John Thomas Howell
1974-9-20
40896
Plumas
Sierra Nevada. About 2 miles from Spring Garden on road to Quincy.
1158
Comment
CAS-BOT-BC16162
Boechera davidsonii
John Thomas Howell
1947-8-7
23849
Inyo
Big Pine Lakes. West of Sixth Lake.
3413
Comment
CAS-BOT-BC16222
Boechera depauperata
John Thomas Howell
1940-8-8
16037
Tulare
Between Reflection Lake and Harrison Pass.
Comment
CAS-BOT-BC13815
Boechera howellii
John Thomas Howell
1937-7-25
13444
Siskiyou
Caribou Basin, Salmon-Trinity Alps.
2286
Comment
CAS-BOT-BC13823
Boechera howellii
John Thomas Howell
1949-7-23
25644
Tulare
Soldier Lake.
3352
Comment
CAS-BOT-BC16297
Boechera howellii
John Thomas Howell
1946-7-22
22614
Fresno
Mount Hopkins.
Comment
CAS-BOT-BC13966
Boechera lemmonii
John Thomas Howell
1949-8-4
26009
Tulare
Ridge west of Siberian Pass.
3352
Comment
CAS-BOT-BC13994
Boechera lemmonii
John Thomas Howell
1941-8-2
16710 A
Madera
Near Thousand Island Lake.
Comment
CAS-BOT-BC14031
Boechera lemmonii
John Thomas Howell
1942-7-25
17140
Tulare
Mineral King.
Comment
CAS-BOT-BC95735
Boechera pauciflora
John Thomas Howell
1934-6-13
12102
Modoc
North fork of Barber Creek, Warner Mts.
1828
Comment
CAS-BOT-BC14198
Boechera pinetorum
John Thomas Howell
1938-8-10
14464
Madera
Near Devil's Postpile.
Comment
CAS-BOT-BC14390
Boechera platysperma
John Thomas Howell
1943-7-17
18449
Nevada
West side of Donner Pass near Norden.
2133
Comment
CAS-BOT-BC14553
Boechera pulchra
John Thomas Howell
1950-7-26
27358
Inyo
Summit Creek, east of Olancha Pass.
2773
Comment
CAS-BOT-BC14623
Boechera pygmaea
John Thomas Howell
1949-8-13
25263
Inyo
Little Cottonwood Creek.
3048
Comment
CAS-BOT-BC14659
Boechera rectissima
John Thomas Howell; Harvey Keith Wagnon
1980-5-26
53603
Plumas
Sierra Nevada. 10 miles east of Virgilia on road to Quincy.
Comment
CAS-BOT-BC25278
Boechera repanda
John Thomas Howell
1962-9-23
38812
Kern
Sierra Nevada. Greenhorn Mountains. Near Tiger Flat.
1981
Comment
CAS-BOT-BC25494
Boechera retrofracta
John Thomas Howell
1946-7-17
22488
Inyo
Rock Creek Lake Basin. Mosquito Flat.
3139
Comment
CAS-BOT-BC16275
Boechera shockleyi
John Thomas Howell
1942-8-3
17628
Tulare
Kaweah Gap.
Comment
CAS-BOT-BC25958
Boechera tularensis
John Thomas Howell
1950-7-21
27158
Tulare
Monache Mountain.
2590
Comment
CAS-BOT-BC28045
Boechera xylopoda
John Thomas Howell
1958-5-22
33158
Tulare
Sierra Nevada. Kern River Canyon 6 miles south of Roads End P.O.
944
Comment
CAS-BOT-BC434512
Boerhavia diffusa
John Thomas Howell; R. C. Barneby
1954-5-8
29211
Tulare
Tule River Canyon, 2.5 miles above Springville
411
Comment
CAS-BOT-BC7642
Bolboschoenus maritimus
John Thomas Howell
1945-8-19
21438
Marin
Head of Drakes Bay.
Comment
CAS-BOT-BC145404
Brachypodium distachyon
John Thomas Howell
1971-4-12
s.n.
San Mateo
Butano State Park.
Comment
SEINET944633
Brachypodium distachyon
John Thomas Howell
1959-1
Sonoma
Hills east of Agua Caliente, Sonomo County.
Comment
CAS-BOT-BC36840
Brassica tournefortii
John Thomas Howell
1977-3-10
52322
San Diego
Colorado Desert. Borrego Springs.
182
Comment
CAS-BOT-BC100449
Brickellia californica
John Thomas Howell
1931-9-6
8032
San Benito
Gravelly bed of San Benito River, 3 miles north of Paicines
Comment
CAS-BOT-BC106281
Brickellia californica
John Thomas Howell
1958-7-28
34045
Fresno
Blue Canyon Creek east of Tehipite Valley, Middle Fork of the Kings River - Sierra Nevada
1432
Comment
UCD129632
Brickellia californica
John Thomas Howell
1950-11-9
27482
Los Angeles
4 miles south of Newhall on Foothill Blvd.
Comment
CAS-BOT-BC100440
Brickellia californica
John Thomas Howell
1931-10-12
8153
Mariposa
2.5 miles east of Coulterville
Comment
CAS-BOT-BC145517
Briza minor
John Thomas Howell
1925-5-17
1068
Merced
Hopeton Bridge on the Merced River.
Comment
CAS-BOT-BC486549
Brodiaea terrestris subsp. kernensis
John Thomas Howell
1963-6-22
39572
Monterey
Priest Valley
685
Comment
CAS-BOT-BC149342
Bromus arizonicus
John Thomas Howell
1956-3-21
31125
Los Angeles
Ridge Route west of Newhall.
Comment
CAS-BOT-BC149358
Bromus arizonicus
John Thomas Howell
1932-3-13
8226
Ventura
San Nicolas Island.
Comment
CAS-BOT-BC149371
Bromus arizonicus
John Thomas Howell
1956-3-22
31128
San Luis Obispo
Shandon.
Comment
CAS-BOT-BC149367
Bromus arizonicus
John Thomas Howell
1960-3-22
35140
San Luis Obispo
At the mission. San Luis Obispo.
Comment
RSA43
Bromus arvensis
J. T. Howell
1927-6-17
153
Orange
Botany Garden, Rancho Santa Ana.
152
Comment
CAS-BOT-BC149402
Bromus berteroanus
John Thomas Howell
1956-3-25
31199
Monterey
Roadside, Salinas Valley, 6.5 miles from King City on Arroyo Seco Road.
Comment
CAS-BOT-BC149076
Bromus carinatus var. carinatus
John Thomas Howell
1955-6-14
30412
Trinity
Weaverville.
609
Comment
CAS-BOT-BC149180
Bromus carinatus var. carinatus
John Thomas Howell
1938-6-19
13912
Marin
Cacade Canyon, Mill Valley.
Comment
CAS-BOT-BC149227
Bromus carinatus var. carinatus
John Thomas Howell
1963-5-5
39055
Monterey
Mustang Grade, west of Priest Valley.
670
Comment
CAS-BOT-BC149320
Bromus carinatus var. carinatus
John Thomas Howell
1959-9-21
34829
Plumas
Sierra Nevada. Greenville.
1088
Comment
CAS-BOT-BC149324
Bromus carinatus var. carinatus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-25
54305
Plumas
Sierra Nevada. East side of Indian Valley just north of Taylorsville.
1112
Comment
CAS-BOT-BC148711
Bromus carinatus var. marginatus
John Thomas Howell
1975-7-22
51369
Plumas
Sierra Nevada. 2 miles northwest of Spring Garden.
1173
Comment
CAS-BOT-BC148706
Bromus carinatus var. marginatus
John Thomas Howell
1960-7-23
35930
Plumas
Lassen Volcanic National Park. Drakesbad.
1828
Comment
CAS-BOT-BC156152
Bromus catharticus
John Thomas Howell
1950-7-13
26777
Tulare
Sierra Nevada. South Fork of the Kern River. Bakeoven Meadows.
2468
Comment
CAS-BOT-BC156216
Bromus catharticus
John Thomas Howell
1963-11-19
40413
Monterey
Pacific Grove.
Comment
CAS-BOT-BC156281
Bromus catharticus
John Thomas Howell
1960-3-24
35147
Riverside
Hemet.
Comment
GH361780
Bromus catharticus
J. T. Howell
1956-5-23
31446
Unknown
El Camino Real at Atherton Ave., Menlo Park
Comment
CAS-BOT-BC155812
Bromus catharticus
John Thomas Howell
1956-3-10
30919
Ventura
Ventura. Along street, Thompson Boulevard and Chrisman Avenue.
Comment
CAS-BOT-BC155924
Bromus ciliatus
John Thomas Howell
1944-8-11
20318
Tuolumne
Tuolumne Meadows.
Comment
CAS-BOT-BC155967
Bromus commutatus
John Thomas Howell
1955-7-20
30867
Plumas
Sierra Nevada. Mohawk.
1371
Comment
CAS-BOT-BC155971
Bromus commutatus
John Thomas Howell
1962-6-18
37814
Plumas
Sierra Nevada. Sierra Valley 5 miles south of Beckwourth.
1493
Comment
CAS-BOT-BC155662
Bromus diandrus
John Thomas Howell; Walter Knight; Irja Knight
1987-6-4
6228
Sonoma
Tood Road Preserve.
24
Comment
CAS-BOT-BC155516
Bromus hallii
John Thomas Howell
1942-8-5
17675
Tulare
Between Big Arroyo and Chagoopa Plateau.
3048
Comment
CAS-BOT-BC155059
Bromus hordeaceus
John Thomas Howell
1962-6-18
37754
Plumas
Sierra Nevada. Sierra Valley near Beckwourth.
1487
Comment
CAS-BOT-BC155118
Bromus hordeaceus
John Thomas Howell
1957-5-17
32275
San Francisco
San Francisco. Bayview Hills.
Comment
CAS-BOT-BC155274
Bromus hordeaceus
John Thomas Howell
1954-5-9
s.n.
Tulare
Sierra Nevada. 4.5 miles southwest of Badger.
609
Comment
CAS-BOT-BC155348
Bromus japonicus
John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight
1967-7-10
2169
Plumas
Sierra Nevada. Butterfly Botanical Area and Vicinity. Mouth of Butterfly Creek.
883
Comment
SEINET10966937
Bromus macrostachys
John Thomas Howell
1947-4-27
Howell 23096
Marin
Steep grassy slope in clay soil, Bald Mt. west of San Anselmo.
Comment
CAS-BOT-BC162321
Bromus madritensis
John Thomas Howell
1963-5-5
39059
Monterey
Mustang Grade, west of Priest Valley.
670
Comment
CAS-BOT-BC162374
Bromus madritensis
John Thomas Howell
1964-4-28
40588
Mariposa
Sierra Nevada. Granitic country just south of Morman Bar on road to Ben Hur.
548
Comment
GH361840
Bromus madritensis
J. T. Howell
1944-6-8
Unknown
Phoenix Lake, Mt. Tamalpais
Comment
RSA126468
Bromus maritimus
J. T. Howell
1946-6-30
22147
Marin
Rodeo Lagoon
Comment
CAS-BOT-BC162116
Bromus orcuttianus
John Thomas Howell
1954-6-6
29944
Tuolumne
Sierra Nevada. Twain Harte.
1127
Comment
CAS-BOT-BC161926
Bromus rubens
John Thomas Howell
1958-5-24
33287
Inyo
Sierra Nevada. Whitney Portal Road.
2346
Comment
CAS-BOT-BC161941
Bromus rubens
John Thomas Howell
1960-6-6
35341
Fresno
Sierra Nevada. Copper Creek Trail, Kings Canyon.
1676
Comment
CAS-BOT-BC161957
Bromus rubens
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52888
Calaveras
Foothills near Wallace.
66
Comment
RSA224272
Bromus stamineus
J. T. Howell
1956-4-22
31282
San Francisco
Embarcadero at Vallejo St.
Comment
RSA99654
Bromus stamineus
J. T. Howell
1953-5-23
28999
Tuolumne
Sonora
549
Comment
UCD59690
Bromus sterilis
John Thomas Howell
1965-5-5
41266
Alameda
Juana Ave. near Morgan Ave., Alameda.
Comment
UC710524
Bromus suksdorfii
John Thomas Howell
1943-7-14
18325
Nevada
near Norden (w side of Donner Pass); Donner Pass
2133
Comment
CAS-BOT-BC161438
Bromus tectorum
John Thomas Howell; Gordon H. True
1971-6-17
48085
Kern
Sierra Nevada. Roadside, 4 miles east of Bodfish Gap.
1767
Comment
CAS-BOT-BC161487
Bromus tectorum
John Thomas Howell
1948-7-31
25248
Inyo
Kearsarge Pass Trail.
2895
Comment
CAS-BOT-BC161519
Bromus tectorum
John Thomas Howell
1957-5-19
32357
Stanislaus
Del Puerto Canyon.
Comment
RSA126469
Bromus vulgaris
J. T. Howell
1945-7-4
21268
Marin
California Academy of Sciences; Inverness Ridge
Comment
UCD114951
Cakile maritima
John Thomas Howell
1943-10-3
19333
Marin
Above high tide line, Muir Beach.
Comment
CAS-BOT-BC36900
Cakile maritima var. maritima
John Thomas Howell
1963-9-4
40332
Monterey
Moss Landing.
Comment
CAS-BOT-BC185416
Calamagrostis bolanderi
John Thomas Howell
1953-7-16
29118
Mendocino
3 miles east of Point Arena.
Comment
CAS-BOT-BC185372
Calamagrostis canadensis
John Thomas Howell
1941-8-9
16899
Madera
Near Garnet Lake.
2956
Comment
GH341548
Calamagrostis canadensis
J. T. Howell
1941-8-6
16801
Unknown
Between Shadow and Garnet lakes, Madera Co.
Comment
SEINET10933881
Calamagrostis canadensis
John Thomas Howell
1944-8-7
Howell 20061
Tuolumne
Tuolumne Meadows.
Comment
CAS-BOT-BC185266
Calamagrostis koelerioides
John Thomas Howell
1937-7-25
13451
Siskiyou
Caribou Basin, Salmon Trinity Alps.
2286
Comment
RSA88127
Calamagrostis koelerioides
J. T. Howell
1951-6-26
27537
Plumas
Feather River Canyon; Sierra Nevada.
854
Comment
CAS-BOT-BC185297
Calamagrostis muiriana
John Thomas Howell
1947-8-5
23767
Inyo
Big Pine Lakes. Fifth Lake.
3352
Comment
CAS-BOT-BC185106
Calamagrostis ophitidis
John Thomas Howell
1966-5-25
41535
Marin
John Thomas Howell Botanical Garden, Tiburon. Just north of garden area.
Comment
CAS-BOT-BC185074
Calamagrostis purpurascens
John Thomas Howell
1946-7-24
22704
Inyo
Mono Mesa.
3657
Comment
CAS-BOT-BC185021
Calamagrostis rubescens
John Thomas Howell
1946-9-15
23004
Marin
Mount Tamalpais. Near Willow Meadow.
Comment
CAS-BOT-BC184997
Calamagrostis stricta subsp. inexpansa
John Thomas Howell
1949-5-25
25338
Marin
Point Reyes Peninsula. Behind dunes.
Comment
GH341600
Calamagrostis stricta subsp. inexpansa
J. T. Howell
1944-8-5
19917
Unknown
Soda Springs, Tuolumne Meadows
Comment
CAS-BOT-BC438461
Calandrinia ciliata
John Thomas Howell
1956-3-24
31176
Monterey
Santa Lucia Mountains. Near San Antonio Mission
Comment
UCD129662
Calendula officinalis
John Thomas Howell
1972-6-25
48891
Solano
about 2 miles west of Benecia.
Comment
CAS-BOT-BC85677
Calocedrus decurrens
John Thomas Howell; Gordon H. True
1968-5-13
44301
Tulare
Sierra Nevada, Kern Plateau - cherry Hill road, Poison Meadow Creek Canyon
2255
Comment
CAS-BOT-BC85707
Calocedrus decurrens
John Thomas Howell
1936-8-24
12758
Trinity
Summit of Scotts Mts. N. of Carrville
Comment
CAS-BOT-BC483209
Calochortus albus
John Thomas Howell
1937-5-20
12989
Santa Clara
Coyote Creek, 3 miles east of Madrone
Comment
CAS-BOT-BC487891
Calochortus invenustus
John Thomas Howell; Gordon H. True
1970-6-26
46823
Tulare
True Meadow, Kern Plateau, Sierra Nevada
2225
Comment
RSA121
Calochortus plummerae
J. T. Howell
1928-6-30
1022
Ventura
Santa Susana Pass.
457
Comment
CAS-BOT-BC496783
Calochortus venustus
John Thomas Howell
1923-7-25
156
Mariposa
Meadow Road, Wawona
1219
Comment
CAS-BOT-BC181490
Caltha leptosepala
John Thomas Howell
1943-7-18
18554
Nevada
Meadow nw. of Castle Peak
Comment
JEPS62628
Calycadenia fremontii
J. Thomas Howell
1969-8-4
45875
Shasta
about 9 mi ne of Cottonwood
Comment
CAS-BOT-BC273456
Calycadenia mollis
John Thomas Howell
1931-10-11
8142 A
Mariposa
Near Usona P. O.
Comment
CAS-BOT-BC270610
Calycadenia multiglandulosa
John Thomas Howell
1963-8-7
40081
Monterey
Mustang Grade between Mustang Summit and San Lorenzo Creek
Comment
RSA584737
Calycadenia oppositifolia
J. T. Howell
1955-6-15
s.n.
Butte
West Branch of North Fork of Feather River.
183
Comment
CAS-BOT-BC270835
Calycadenia pauciflora
John Thomas Howell
1930-10-19
5626
Napa
5 miles from Aetna Springs on Butts Canyon road to Middletown, near Napa - Lake County line
Comment
CAS-BOT-BC90928
Calycanthus occidentalis
John Thomas Howell
1967-6-22
42640
Butte
Sierra Nevada. 1 mile southwest of Pulga Bridge Canyon of the Feather River North Fork.
Comment
CAS-BOT-BC215834
Calystegia purpurata subsp. purpurata
John Thomas Howell
1933-8-19
11597
Monterey
Carmel Valley, 11 miles east of Carmel
Comment
CAS-BOT-BC215886
Calystegia purpurata subsp. purpurata
John Thomas Howell
1940-5-26
15531
Marin
Little Carson Falls
Comment
CAS-BOT-BC224344
Calystegia subacaulis subsp. subacaulis
John Thomas Howell
1956-5-6
31341
San Francisco
Sierra & 22nd Sts., San Francisco
Comment
CAS-BOT-BC160776
Camissonia kernensis subsp. kernensis
John Thomas Howell; Gordon H. True
1971-6-16
47873
Kern
Along Kelso Creek, 7 miles south of Weldon on road to Kelso Valley
914
Comment
UC1042536
Campanula angustiflora
John Thomas Howell
1946-5-12
21818
Marin
Carson country
Comment
SEINET10462954
Campanula prenanthoides
Howell
1936-8-26
Howell 12821
Trinity
Near junction of Tangle Blue and Scott Mountain creeks
Comment
SEINET10463090
Campanula prenanthoides
Howell
1937-7-26
Howell 13561
Siskiyou
Between Big Flat and Caribou Gulch
Comment
CAS-BOT-BC37316
Cardamine breweri
John Thomas Howell
1942-7-24
17070
Tulare
Mineral King.
Comment
CAS-BOT-BC37320
Cardamine breweri
John Thomas Howell; Gordon H. True
1966-7-11
41763
Tulare
Sierra Nevada. Kern Plateau. Horse Meadow.
2255
Comment
CAS-BOT-BC281738
Carduus pycnocephalus
John Thomas Howell
1933-5-14
11246
Contra Costa
Hills E of St Mary's College
Comment
JEPS59102
Carduus pycnocephalus subsp. pycnocephalus
J. Thomas Howell
1940-6-4
San Francisco
on the marina, San Francisco San Francisco Marina
Comment
CAS-BOT-BC18219
Carex
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-25
53000
Calaveras
Sierra Nevada. Dorrington.
1463
Comment
CAS-BOT-BC18233
Carex
John Thomas Howell
1945-9-29
21539
El Dorado
Between Lake of the Woods and Desolation Valley.
Comment
CAS-BOT-BC18524
Carex abrupta
John Thomas Howell
1946-7-28
22811
Inyo
Rock Creek Lake Basin. Long Lake.
3230
Comment
CAS-BOT-BC18551
Carex abrupta
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-12
54511
Mono
Sierra Nevada. Rock Creek Road to Rock Creek Lake Basin.
2849
Comment
CAS-BOT-BC19765
Carex abrupta
John Thomas Howell
1939-8-9
15192
Siskiyou
Marble Mountains. Sky High Valley.
1828
Comment
CAS-BOT-BC20320
Carex abrupta
John Thomas Howell; Gordon H. True
1971-7-14
48462 A
Tulare
Sierra Nevada. Kern Plateau. West end of Deadwood Meadow (about 1.5 mile northwest of Sirretta Peak.)
2804
Comment
CAS-BOT-BC20328
Carex abrupta
John Thomas Howell
1949-7-19
25519
Tulare
Rock Creek.
3200
Comment
SD71030
Carex angustata
John Thomas Howell
1960-7-23
35945
Plumas
Lassen volcanic National Park; Drakesbad; meadow near soda spring.
1676
Comment
CAS-BOT-BC17980
Carex aquatilis
John Thomas Howell
1943-8-5
19064 A
Glenn
Plaskett Meadows. In open part of north meadows.
1828
Comment
CAS-BOT-BC17988
Carex aquatilis
John Thomas Howell
1941-7-25
16458
Madera
Agnew Meadows.
Comment
RSA44305
Carex aquatilis
J. T. Howell
1947-8-13
24055
Inyo
Big Pine Lakes Trail
2744
Comment
CAS-BOT-BC18078
Carex athrostachya
John Thomas Howell
1946-7-14
22314
Inyo
Rock Creek Lake Basin. Mosquito Flat.
3139
Comment
CAS-BOT-BC19004
Carex athrostachya
John Thomas Howell; Gordon H. True
1967-7-4
42960
Tulare
Sierra Nevada. Kern Plateau. Troy Meadow.
2377
Comment
SEINET7550707
Carex athrostachya
John Thomas Howell
1934-7-7
12472
Lassen
Pine Creek Flat.
Comment
CAS-BOT-BC19069
Carex aurea
John Thomas Howell
1958-7-25
33914
Fresno
Sierra Nevada. Middle Fork of the Kings River. Simpson Meadow.
1828
Comment
RSA51982
Carex aurea
J. T. Howell
1949-7-26
25780
Tulare
Whitney Meadows.
2957
Comment
RSA43280
Carex barbarae
J. T. Howell
1944-6-11
s.n.
Santa Cruz
About 1 mile east of Felton.
Comment
CAS-BOT-BC19376
Carex barbarae
John Thomas Howell
1980-10-6
53903
Stanislaus
Sierra Nevada. Stanislaus River near Ripon. At Caswell Memorial State Park.
15
Comment
CAS-BOT-BC19557
Carex bolanderi
John Thomas Howell
1937-7-21
13197
Siskiyou
South Fork of Salmon River near Big Flat.
1524
Comment
UC905002
Carex bolanderi
John Thomas Howell
1944-6-4
19540
Marin
w Inverness; Inverness Ridge
Comment
CAS-BOT-BC19590
Carex brainerdii
John Thomas Howell
1962-7-10
38439
Kern
Sierra Nevada. Greenhorn Mountains. 1.5 mile south of Summit.
1950
Comment
POM304482
Carex brainerdii
J. T. Howell
1940-5-31
15550
Mariposa
Yosemite Valley.
Comment
CAS-BOT-BC34033
Carex brevicaulis
John Thomas Howell
1946-4-14
21628
Marin
Near Dillons Beach.
Comment
CAS-BOT-BC34060
Carex brevicaulis
John Thomas Howell
1938-4-12
13766
San Francisco
Lake Merced, San Francisco.
Comment
SD72069
Carex brevicaulis
John Thomas Howell
1968-4-18
4419 a
Monterey
About 4 miles east of Monterey near the airport, forming turfy patches on open flats in sandy soil.
Comment
SEINET10752418
Carex brevicaulis
John Thomas Howell
1956-6-10
Howell 31549
San Francisco
North slope of Bay View Hills.
Comment
CAS-BOT-BC34120
Carex breweri
John Thomas Howell
1947-8-11
24019
Inyo
South end of Coyote Ridge.
3657
Comment
CAS-BOT-BC34247
Carex capitata
John Thomas Howell
1946-7-26
22750
Inyo
Mono Mesa.
3657
Comment
CAS-BOT-BC34260
Carex capitata
John Thomas Howell
1948-7-26
25071
Tulare
Center Basin.
3413
Comment
CAS-BOT-BC34316
Carex congdonii
John Thomas Howell
1949-8-12
26229
Inyo
Upper Cottonwood Lakes.
3398
Comment
RSA44320
Carex congdonii
J. T. Howell
1947-8-6
23832
Inyo
Summit Lake; (moraine above), Big Pine Lakes.
3415
Comment
CAS-BOT-BC34466
Carex deflexa var. boottii
John Thomas Howell
1948-7-23
24945
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows.
3048
Comment
CAS-BOT-BC34852
Carex deflexa var. boottii
John Thomas Howell
1958-8-9
34254
Madera
Sierra Nevada. Miller Meadow.
2103
Comment
UCD140244
Carex deflexa var. boottii
John Thomas Howell
1961-6-20
36553
Shasta
Lassen Volcanic National Park, Dersch Meadows.
1981
Comment
CAS-BOT-BC20481
Carex densa
John Thomas Howell
1930-6-8
5235
Sonoma
3 miles east of Valley Ford.
Comment
CAS-BOT-BC34965
Carex densa
John Thomas Howell; R. C. Barneby
1954-5-10
29350
Fresno
Sierra Nevada. 3 miles above Tollhouse.
1082
Comment
CAS-BOT-BC35020
Carex densa
John Thomas Howell
1944-4-23
19402
Marin
Hills SE of Kentfield.
Comment
CAS-BOT-BC35028
Carex densa
John Thomas Howell
1946-6-13
22055
Marin
Esters School north of Dillon Beach.
Comment
UC1026410
Carex densa
John Thomas Howell
1953-5-22
28974
Stanislaus
Knights Ferry Sierra Nevada
60
Comment
CAS-BOT-BC34958
Carex densa
John Thomas Howell
1954-5-16
29614
El Dorado
Sierra Nevada. Shingle Springs.
426
Comment
CAS-BOT-BC19894
Carex echinata subsp. phyllomanica
John Thomas Howell
1946-6-9
22005
Marin
Abbotts Lagoon.
Comment
CAS-BOT-BC19915
Carex epapillosa
John Thomas Howell
1947-8-11
23991
Inyo
Baker Lakes. Thunder and Lightning Lake.
3566
Comment
CAS-BOT-BC20116
Carex feta
John Thomas Howell
1962-6-17
37659
Plumas
Sierra Nevada. Butterfly Valley.
1036
Comment
CAS-BOT-BC20219
Carex filifolia var. erostrata
John Thomas Howell
1946-7-24
22699
Inyo
Mono Mesa.
3657
Comment
CAS-BOT-BC20233
Carex filifolia var. erostrata
John Thomas Howell
1941-7-24
16427
Madera
Near Garnet Lake.
2956
Comment
CAS-BOT-BC20270
Carex filifolia var. erostrata
John Thomas Howell
1944-8-10
20224
Mono
North slope of Mount Dana.
Comment
CAS-BOT-BC20278
Carex filifolia var. erostrata
John Thomas Howell
1940-8-1
15807
Tulare
Between Reflection Lake and Harrison Pass.
Comment
CAS-BOT-BC20816
Carex fracta
John Thomas Howell
1950-7-17
26996
Tulare
Trail from Bakeoven to Templeton Meadows.
2682
Comment
CAS-BOT-BC21303
Carex fracta
John Thomas Howell; Gordon H. True
1973-7-31
50047
Lassen
Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range.
1783
Comment
CAS-BOT-BC20429
Carex globosa
John Thomas Howell
1939-6-16
14757
Santa Cruz
Ben Lomond sand-hills.
Comment
CAS-BOT-BC20852
Carex globosa
John Thomas Howell
1953-3-15
28923
Contra Costa
Rock City, Mt. Diablo.
Comment
UCR74656
Carex globosa
J. T. Howell
1944-4-2
19368 A
Marin
SE of Laurel Dell, Mt. Tamalpais
Comment
SEINET7559869
Carex globosa
John Thomas Howell
1944-4-2
19368 A
Marin
Southeast of Laurel Del, Mt Tamalpais.
Comment
CAS-BOT-BC28385
Carex gracilior
John Thomas Howell
1943-4-11
17898
Marin
Black Canyon, San Rafael Hills.
Comment
CAS-BOT-BC146562
Carex gynodynama
John Thomas Howell
1945-6-24
21240
Marin
Willow Meadow, Mt. Tamalpais
Comment
RSA88347
Carex harfordii
J. T. Howell
1953-5-7
28952
Monterey
Huckleberry Hill, Monterey
Comment
CAS-BOT-BC22128
Carex harfordii
John Thomas Howell
1937-6-13
13048
Marin
Head of Drakes Bay, Point Reyes.
Comment
UC905017
Carex harfordii
John Thomas Howell
1949-5-25
25335
Marin
Pt. Reyes Peninsula
Comment
CAS-BOT-BC22233
Carex haydeniana
John Thomas Howell
1949-8-5
26048
Inyo
Army Pass.
3657
Comment
CAS-BOT-BC22219
Carex helleri
John Thomas Howell
1946-7-26
22768
Inyo
Mono Mesa.
3657
Comment
RSA44308
Carex helleri
J. T. Howell
1947-8-5
23785
Inyo
Fifth Lake, Big Pine Lakes.
3354
Comment
CAS-BOT-BC22070
Carex heteroneura
John Thomas Howell
1944-8-18
20698
Mariposa
Porcupine Flat.
Comment
CAS-BOT-BC28082
Carex hoodii
John Thomas Howell
1937-7-25
13484
Siskiyou
Caribou Basin, Salmon-Trinity Alps.
2286
Comment
CAS-BOT-BC28090
Carex hoodii
John Thomas Howell
1942-7-26
17255
Tulare
Mineral King
Comment
CAS-BOT-BC28142
Carex hoodii
John Thomas Howell
1946-7-14
22321
Inyo
Mosquito Flat, Rock Creek Lake Basin.
3139
Comment
CAS-BOT-BC17190
Carex illota
John Thomas Howell
1946-7-23
22680
Fresno
Fourth Recess
3048
Comment
CAS-BOT-BC28057
Carex illota
John Thomas Howell
1944-8-7
20096
Tuolumne
Tuolumne Meadows.
Comment
SEINET12879854
Carex illota
J. T. Howell
1944-1
20042
Unknown
Comment
CAS-BOT-BC7659
Carex integra
John Thomas Howell
1939-8-3
15002
Siskiyou
Spirit Lake, Marble Mountains.
1828
Comment
RSA52239
Carex integra
J. T. Howell
1949-8-6
26088
Tulare
Soldier Lake.
3354
Comment
SD130385
Carex jonesii
John Thomas Howell
1970-9-23
47338
Kern
Sierra Nevada; Greenhorn Mountains; near Tiger Flat; east side of Sunday Peak.
1981
Comment
CAS-BOT-BC31154
Carex lemmonii
John Thomas Howell
1960-7-18
35513
Plumas
Wet meadow, Drakesbad.
1828
Comment
UC904945
Carex lemmonii
John Thomas Howell
1947-7-23
23563
San Bernardino
Dollar Lake Trail San Bernardino Mountains
2773
Comment
CAS-BOT-BC28541
Carex lenticularis var. impressa
John Thomas Howell
1942-8-1
17561
Tulare
Moraine Lake.
Comment
CAS-BOT-BC28464
Carex lenticularis var. lipocarpa
John Thomas Howell
1960-8-22
36394
Shasta
Hat Lake
1950
Comment
CAS-BOT-BC28510
Carex lenticularis var. lipocarpa
John Thomas Howell
1951-6-28
27733
Plumas
Eureka Lake
1889
Comment
POM254202
Carex lenticularis var. lipocarpa
J. T. Howell
1939-8-3
14760
Siskiyou
Spirit Lake, Marble Mountains.
1829
Comment
CAS-BOT-BC31798
Carex mariposana
John Thomas Howell
1949-8-7
26142
Tulare
Rock Creek to Guyot Creek.
3017
Comment
SD130388
Carex mariposana
John Thomas Howell
1972-7-10
38444
Kern
Sierra Nevada; greenhorn Mountains; 1.5 miles south of Summit.
1951
Comment
CAS-BOT-BC146632
Carex mendocinensis
John Thomas Howell
1940-5-26
15535
Marin
Little Carson Falls
Comment
CAS-BOT-BC31893
Carex microptera
John Thomas Howell
1943-7-14
18307
Nevada
West side of Donner Pass near Norden
2133
Comment
UCD140645
Carex microptera
John Thomas Howell
1939-8-5
15082
Siskiyou
Spirit Lake, Marble Mountains.
1828
Comment
CAS-BOT-BC32155
Carex multicaulis
John Thomas Howell
1955-6-14
30469
Butte
De Sabla
Comment
SD130934
Carex multicaulis
John Thomas Howell
1972-4-24
48698
Mariposa
Sierra Nevada Mountains; west of Yosemite Valley near Cascade Falls; in yellow pine forest.
1036
Comment
UCD140651
Carex multicaulis
John Thomas Howell
1937-7-27
13586
Trinity
Coffee Creek Canyon near Union Creek.
Comment
CAS-BOT-BC119997
Carex multicostata
John Thomas Howell
1951-7-17
27843
Tulare
White Chief Trail.
2834
Comment
CAS-BOT-BC21317
Carex multicostata
John Thomas Howell
1938-8-9
14457
Madera
Devil's Postpile.
Comment
CAS-BOT-BC119985
Carex multicostata
John Thomas Howell; Gordon H. True
1970-6-26
46892
Tulare
Cherry Hill Road, just S of Big Meadow. Kern Plateau
2529
Comment
CAS-BOT-BC119954
Carex nebrascensis
John Thomas Howell; Gordon H. True
1966-7-11
41613
Tulare
Poison Meadow, Kern Plateau
2286
Comment
CAS-BOT-BC119959
Carex nebrascensis
John Thomas Howell
1949-7-27
25835
Tulare
Whitney Meadows.
2956
Comment
CAS-BOT-BC119950
Carex nebrascensis
John Thomas Howell; Gordon H. True
1971-7-14
48460
Tulare
W end of Deadwood Meadow, ca 1.5 mi NW of Sirretta Peak.
2804
Comment
SEINET7568733
Carex nebrascensis
John Thomas Howell
1934-6-15
12190
Modoc
Alturas.
Comment
CAS-BOT-BC119621
Carex nigricans
John Thomas Howell
1949-7-20
25554
Tulare
Sky Blue Lake
3505
Comment
SEINET7568886
Carex nigricans
John Thomas Howell
1937-7-25
13487
Siskiyou
Caribou Basin, Salmon-Trinity Alps.
1981
Comment
CAS-BOT-BC119575
Carex nudata
John Thomas Howell
1950-5-20
26319
Tulare
Along bank of Kaweah River at Three Rivers.
304
Comment
CAS-BOT-BC119391
Carex obnupta
John Thomas Howell
1946-5-4
21714
Marin
East of Aurora School at Sonoma Co. line.
Comment
UC583126
Carex obnupta
John Thomas Howell and J. W. Stacey
1936-6-7
12648
Marin
on road to Point Reyes; Ledum Swamp
Comment
CAS-BOT-BC9287
Carex orestera
John Thomas Howell
1947-8-7
23873
Inyo
West of Sixth Lake, Big Pine Lakes
3413
Comment
UC710482
Carex pachystachya
John Thomas Howell
1943-8-9
19236
Glenn
Plaskett Meadows
1828
Comment
RSA88344
Carex pansa
J. T. Howell
1953-5-9
28964
Monterey
Dunes just above beach, Carmel
Comment
RSA98599
Carex pansa
J. T. Howell
1953-5-9
28964
Monterey
Dunes just above beach, Carmel
Comment
CAS-BOT-BC118973
Carex pellita
John Thomas Howell
1947-7-18
23429
Los Angeles
Big Pines, San Gabriel Mts.
2103
Comment
SD130392
Carex petasata
John Thomas Howell
1963-7-10
39731
Alpine
Sierra Nevada; Sagebrush flat; 0.5 mile west of Monitor Pass.
1219
Comment
CAS-BOT-BC118850
Carex praeceptorum
John Thomas Howell
1946-7-15
22384
Inyo
Between Mosquito Flat and Ruby Lake, Rock Creek Lake Basin.
Comment
UC750554
Carex praeceptorum
John Thomas Howell
1946-7-15
22384
Inyo
between Mosquito Flat and Ruby Lake; Rock Creek Lake Basin
Comment
CAS-BOT-BC118363
Carex praegracilis
John Thomas Howell
1928-6-20
4057
Inyo
Jail Canyon near the Burro Mine, Panamint Mts.
1066
Comment
CAS-BOT-BC118583
Carex praegracilis
John Thomas Howell; Gordon H. True
1967-5-30
42440
Tulare
Slopes W of Lamont Meadow. Kern Plateau.
1706
Comment
CAS-BOT-BC117995
Carex rossii
John Thomas Howell
1958-7-24
33881
Fresno
Simpson Meadow, Middle Fork of the Kings River.
1828
Comment
CAS-BOT-BC118012
Carex rossii
John Thomas Howell
1958-5-24
33257
Inyo
Whitney Portal
2529
Comment
SEINET10709358
Carex rossii
John Thomas Howell
1944-7-14
Howell 19782
Glenn
Plaskett Meadows.
Comment
CAS-BOT-BC117869
Carex sartwelliana
John Thomas Howell
1958-7-25
33906
Fresno
Simpson Meadow, Middle fork of the Kings River.
1828
Comment
CAS-BOT-BC117898
Carex scabriuscula
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54148
Plumas
2.65 miles W of Round Valley Reservoir dam.
1569
Comment
CAS-BOT-BC117907
Carex scabriuscula
John Thomas Howell
1937-7-29
13673
Siskiyou
North side of Scott Mt.
Comment
CAS-BOT-BC118217
Carex scoparia
John Thomas Howell
1976-7-15
51848
Plumas
Snake Lake, ca 4 mi NW of Quincy.
1219
Comment
CAS-BOT-BC28282
Carex scopulorum var. bracteosa
John Thomas Howell
1944-8-13
14578
Mariposa
Snow Flat.
Comment
CAS-BOT-BC117494
Carex senta
John Thomas Howell; Gordon H. True
1968-5-12
44239
Tulare
Wet ground along Brush Creek, Kern Plateau.
1402
Comment
CAS-BOT-BC117561
Carex serratodens
John Thomas Howell
1945-6-19
21019
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
RSA52091
Carex simulata
J. T. Howell
1946-9-1
22980
El Dorado
Echo Summit.
2256
Comment
CAS-BOT-BC117782
Carex specifica
John Thomas Howell
1941-7-31
16559
Madera
Agnew Pass Trail.
Comment
RSA52236
Carex specifica
J. T. Howell
1949-8-7
26139
Tulare
Rock Creek to Guyot Creek.
3018
Comment
CAS-BOT-BC117146
Carex spectabilis
John Thomas Howell
1941-8-5
16769
Madera
Near Garnet Lake
2956
Comment
RSA22207
Carex spectabilis
J. T. Howell
1938-8-12
14553
Tuolumne
Tuolumne Meadows
Comment
SEINET10749653
Carex spectabilis
John Thomas Howell
1941-8-2
Howell 16674
Madera
Near Garnet Lake,
2957
Comment
SEINET12882926
Carex spectabilis
J. T. Howell
1944-1
20395
Unknown
Comment
CAS-BOT-BC116993
Carex straminiformis
John Thomas Howell
1943-7-21
18667
Placer
Mt. Lincoln
Comment
CAS-BOT-BC117065
Carex straminiformis
John Thomas Howell
1946-7-16
22464
Inyo
West side of Morgan Pass. Rock Creek Lake Basin.
Comment
UCD140894
Carex straminiformis
John Thomas Howell
1960-8-19
36151
Tehama
Brokeoff Mountain Trail. Lassen Volcanic National Park.
2682
Comment
RSA51942
Carex subbracteata
J. T. Howell
1949-5-25
25336
Marin
Point Reyes Peninsula.
Comment
CAS-BOT-BC116815
Carex subbracteata var. subbracteata
John Thomas Howell
1938-5-1
13776
San Mateo
San Bruno Hills
Comment
CAS-BOT-BC116861
Carex subbracteata var. subbracteata
John Thomas Howell
1956-6-10
31540
San Francisco
North slope of Bay View Hills.
Comment
CAS-BOT-BC114998
Carex subfusca
John Thomas Howell
1960-7-18
35565
Plumas
Meadow, Drakesbad.
1828
Comment
CAS-BOT-BC115772
Carex subfusca
John Thomas Howell; Gordon H. True
1970-6-26
46890
Tulare
Wet place in coniferous forest, Cherry Hill Road just S of Big Meadow.
2529
Comment
SEINET7577172
Carex subfusca
John Thomas Howell, T. C. Fuller, G. D. Barbe
1980-7-16
53858
Tulare
Sierra Nevada, Paloma Meadows, Kern Plateau.
2591
Comment
CAS-BOT-BC9355
Carex subnigricans
John Thomas Howell
1940-8-9
16086
Fresno
Bullfrog Lake
Comment
CAS-BOT-BC9379
Carex subnigricans
John Thomas Howell
1951-7-21
28084
Tulare
Mineral King and Vicinity. White Chief Region
3048
Comment
CAS-BOT-BC115699
Carex tahoensis
John Thomas Howell
1946-7-16
22435
Inyo
Box Lake, Rock Creek Lake Basin.
3200
Comment
UCR87998
Carex tompkinsii
J. T. Howell
1972-4-25
48719
Mariposa
Sierra Nevada Mountains, Merced River Canyon, 1 mi from Arch Rock on the road to Cascade Falls.
915
Comment
SEINET7578148
Carex tompkinsii
John Thomas Howell
1972-4-25
48719
Mariposa
In Merced River Canyon, 1 mile from Arch Rock on road to Cascade Falls.
914
Comment
CAS-BOT-BC115587
Carex tumulicola
John Thomas Howell
1944-4-13
19370
Marin
Big Rock Ridge W of Hamilton Field.
Comment
CAS-BOT-BC115367
Carex utriculata
John Thomas Howell
1941-8-6
16794
Madera
Shadow Creek below Lake Ediza
Comment
CAS-BOT-BC115410
Carex utriculata
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54182
Plumas
Long Valley at road to Maxwell Mine.
1633
Comment
CAS-BOT-BC115260
Carex vernacula
John Thomas Howell
1938-8-11
14521
Tuolumne
Mt. Dana
3200
Comment
CAS-BOT-BC115269
Carex vernacula
John Thomas Howell
1942-8-2
17584
Tulare
Little Five Lakes Basin.
Comment
UC904988
Carex vernacula
John Thomas Howell
1949-7-25
25728
Tulare
Siberian Pass Creek Sierra Nevada
Comment
CAS-BOT-BC115155
Carex vesicaria
John Thomas Howell
1960-7-19
35626
Plumas
Meadow, Drakesbad.
1828
Comment
SEINET10785808
Carex xerophila
John Thomas Howell, Gordon H. True
1969-4-9
Howell 45490
Butte
Magalia.
701
Comment
SEINET4410122
Carpenteria californica
J. T. Howell
1954-1
11429
Unknown
Comment
CAS-BOT-BC281931
Carthamus tinctorius
John Thomas Howell
1954-4-26
29195
Solano
Along road just S of Winters
Comment
JEPS58954
Castilleja
John Thomas Howell
1947-6-18
23282
Marin
n of Dillons Beach
Comment
RSA102193
Castilleja ambigua subsp. ambigua
J. T. Howell, G. Thomas Robbins
1945-5-9
1899
Marin
0.5 mile north of Hamilton Field Air Base. Ca. sea level.
0
Comment
CAS-BOT-BC249383
Castilleja applegatei
John Thomas Howell; Gordon H. True
1967-8-9
43659
Tulare
About 4 miles north of Blackrock Guard Station, on Monache Trail. Kern Plateau
2682
Comment
CAS-BOT-BC249487
Castilleja applegatei subsp. pallida
John Thomas Howell
1941-7-31
16576
Madera
Agnew Pass Trail
Comment
CAS-BOT-BC249495
Castilleja applegatei subsp. pallida
John Thomas Howell
1938-8-10
14490
Mono
Minaret Summit
Comment
CAS-BOT-BC249563
Castilleja applegatei subsp. pallida
John Thomas Howell
1938-8-11
14517
Tuolumne
Mt. Dana
3200
Comment
CAS-BOT-BC241178
Castilleja applegatei subsp. pinetorum
John Thomas Howell
1936-8-26
12835
Trinity
Trinity River Canyon near Eagle Creek
Comment
CAS-BOT-BC241183
Castilleja applegatei subsp. pinetorum
John Thomas Howell
1940-8-4
15971
Tulare
Ouzel Basin
3048
Comment
CAS-BOT-BC241202
Castilleja applegatei subsp. pinetorum
John Thomas Howell; Gordon H. True
1970-6-24
46700
Tulare
North Manter Creek, Big Meadow to Manter Meadow. Kern Plateau
2438
Comment
RSA728
Castilleja cinerea
J. T. Howell
1927-7-10
356
San Bernardino
Big Bear Lake.
2043
Comment
RSA705
Castilleja foliolosa
J. T. Howell
1928-2-25
848
Orange
Nolina Canyon, Rancho Santa Ana.
152
Comment
CAS-BOT-BC243857
Castilleja latifolia
John Thomas Howell
1934-3-3
11740
Sonoma
Near Fort Ross
Comment
CAS-BOT-BC32617
Castilleja latifolia subsp. pinnatifida
John Thomas Howell
1933-5-28
11364
Alameda
Strawberry Canyon, Berkeley HIlls
Comment
GH56153
Castilleja latifolia subsp. pinnatifida
J. T. Howell
1933-5-28
11364
Unknown
Berkeley, Strawberry Canyon, Berkeley Hills
Comment
JEPS9091
Castilleja nana
John Thomas Howell
1951-7-21
28073
Tulare
vicinity Mineral King (White Chief Region); , White Chief Region
2895
Comment
RSA78620
Castilleja nana
J. T. Howell
1944-8-8
20159
Mariposa
High gap south of Elizabeth Lake.
Comment
CAS-BOT-BC240995
Castilleja pilosa
John Thomas Howell
1949-8-12
26238
Inyo
Cottonwood Lakes
3383
Comment
CAS-BOT-BC241087
Castilleja schizotricha
John Thomas Howell
1939-8-4
15043
Siskiyou
Marble Rim, Marble Mts.
1889
Comment
JEPS58952
Castilleja subinclusa subsp. franciscana
John Thomas Howell
1946-5-19
21914
Marin
Meadow Club Fairfax Hills (Fairfax Hills)
Comment
JEPS29553
Castilleja tenuis
John Thomas Howell
1960-7-18
35517
Plumas
Drakesbad; Lassen Volcanic National Park
1676
Comment
CAS-BOT-BC39636
Caulanthus
John Thomas Howell
1938-8-7
14342
Mono
Near Little Round Valley.
2133
Comment
CAS-BOT-BC39650
Caulanthus
John Thomas Howell; Gordon H. True
1967-7-5
43193
Tulare
Sierra Nevada. Kern Plateau. 2.8 miles north of South Fork Kern River bridge on road to Troy Meadow.
2194
Comment
CAS-BOT-BC38190
Caulanthus anceps
John Thomas Howell
1931-3-23
6000
Monterey
Poncho Rico Canyon, 6.6 miles east of Salinas Valley.
Comment
CAS-BOT-BC38451
Caulanthus coulteri
John Thomas Howell
1976-5-18
51754
Kern
Sierra Nevada. Greenhorn Mountains. 2.6 miles from Wofford. Along old road from Alta Sierra to Wofford Heights.
Comment
CAS-BOT-BC41090
Caulanthus hallii
John Thomas Howell
1930-5-10
4811
San Diego
10 miles north of Warner's Hot Springs.
Comment
CAS-BOT-BC40230
Caulanthus lasiophyllus
John Thomas Howell
1966-5-25
41543
Marin
Gully just north of garden area. John Thomas Howell Botanical Garden, Tiburon.
Comment
CAS-BOT-BC40238
Caulanthus lasiophyllus
John Thomas Howell
1956-3-25
31212
Monterey
Santa Lucia Mountains. 7 miles from Greefield on Arroyo Seco road.
Comment
CAS-BOT-BC40475
Caulanthus lasiophyllus
John Thomas Howell
1933-5-21
11299
Solano
Blue Rock Springs.
Comment
SD72045
Caulanthus major
John Thomas Howell
1964-8-10
40944
Alpine
Rocky knoll ca. 0.5 mile southwest of Monitor Pass.
2515
Comment
CAS-BOT-BC48513
Ceanothus confusus
John Thomas Howell
1933-4-2
10946
Sonoma
Rincon Ridge near Santa Rosa
Comment
CAS-BOT-BC48708
Ceanothus cordulatus
John Thomas Howell
1945-9-30
21545
El Dorado
Near Echo Summit
Comment
CAS-BOT-BC47863
Ceanothus cordulatus
John Thomas Howell
1960-7-20
35741
Plumas
Lassen Volcanic Nat'l Park, Boiling Springs Lake
1798
Comment
RSA1511
Ceanothus crassifolius
J. T. Howell
1929-2-13
1227
Riverside
2 miles so. of Alberhill.
Comment Read comments Nov 9 2011
A349131
Ceanothus cuneatus
J. T. Howell
1924-5-10
304
Unknown
Wawona Valley
Comment
CAS-BOT-BC48402
Ceanothus cuneatus var. cuneatus
John Thomas Howell
1939-6-16
14751
Santa Clara
Skyline Boulevard near Saratoga Gap
Comment
CAS-BOT-BC48440
Ceanothus cuneatus var. ramulosus
John Thomas Howell
1942-3-8
16934
Marin
Between Fairfax and Carson Ridge above Cascade Canyon
Comment
CAS-BOT-BC49102
Ceanothus cuneatus var. ramulosus
John Thomas Howell
1954-3-18
29132
Monterey
Hastings Reservation, Santa Lucia Mts.
Comment
CAS-BOT-BC49148
Ceanothus cuneatus var. ramulosus
John Thomas Howell
1930-12-28
5718
Marin
Slope of Mt. Tamalpais above Mill Valley
Comment
UC1177453
Ceanothus foliosus
John Thomas Howell
1946-5-25
21942
Marin
hills w of Corte Madera
Comment
CAS-BOT-BC64417
Ceanothus foliosus subsp. vineatus
John Thomas Howell
1931-3-14
5780
Sonoma
Vine Hill District, 19 mi. w. of Santa Rosa.
Comment
CAS-BOT-BC50919
Ceanothus foliosus var. foliosus
John Thomas Howell; Alice Eastwood
1939-6-11
7430
Napa
Hills west of Calistoga
Comment
CAS-BOT-BC50732
Ceanothus integerrimus
John Thomas Howell
1973-7-9
49718
Plumas
Sierra Nevada - Round Valley
1371
Comment
RSA518960
Ceanothus integerrimus
J. T. Howell
1975-6-15
51116
Butte
Skyway and Montana Drive, Paradise.
610
Comment
CAS-BOT-BC51199
Ceanothus leucodermis
John Thomas Howell
1965-4-26
41200
Madera
1.5 miles North of Oakhurst
762
Comment
SEINET8126933
Ceanothus masonii
J. T. Howell, A. Eastwood
1937-1
3838
Unknown
Comment
LA44928
Ceanothus oliganthus var. sorediatus
John Thomas Howell;
1930-4-17
4716
Alameda
Strawberry Canyon, Berkeley Hills
Comment
CAS-BOT-BC126824
Ceanothus pauciflorus
John Thomas Howell; Gordon H. True
1967-5-29
42357
Tulare
Midway between Chimney and Lamont Meadows, Kern Plateau
1889
Comment
CAS-BOT-BC52058
Ceanothus prostratus
John Thomas Howell
1975-7-22
51356
Plumas
2 miles Northwest of Spring Garden
1173
Comment
CAS-BOT-BC53037
Ceanothus sonomensis
John Thomas Howell
1935-5-5
12609
Sonoma
West slope of Hood Peak Range near summit of Triniti P.O. Road
Comment
A425288
Ceanothus sorediatus
J. T. Howell
1928-3-2
3369
Unknown
Los Angeles, Canon bottom, Vermont Canon, Griffith Park
Comment
CAS-BOT-BC52438
Ceanothus velutinus var. velutinus
John Thomas Howell
1924-8-13
637
Lassen
Between Chester and Westwood
Comment
CAS-BOT-BC52726
Ceanothus vestitus
John Thomas Howell; Gordon H. True
1966-7-12
41823
Kern
Sierra Nevada - Kern Plateau - Rim of plateau just east of Fay Creek Canyon
2194
Comment
CAS-BOT-BC63110
Ceanothus vestitus
John Thomas Howell; Gordon H. True
1967-5-29
42404
Tulare
Long Valley on road to Lamont Meadow. kern Plateau.
1645
Comment
CAS-BOT-BC281963
Centaurea benedicta
John Thomas Howell
1930-6-29
5330
San Joaquin
At Nile Garden
Comment
RSA8524
Centaurea repens
J. T. Howell
1933-7-2
11419
Monterey
6 miles N of King City
Comment
UC878341
Centaurium venustum
John Thomas Howell
1938-5-29
13855
Madera
Raymond
Comment
CAS-BOT-BC288541
Centromadia fitchii
John Thomas Howell
1955-8-24
30904
Contra Costa
Mt Diablo near Turtle Rock
259
Comment
PGM636
Centromadia fitchii
J. T. Howell
1963-8-7
Monterey
Diablo Range, Highway 198 Mustang Grade W side, Between summit & San Lorenzo Cr
Comment
CAS-BOT-BC271544
Centromadia parryi subsp. parryi
John Thomas Howell
1930-10-5
5530
Sonoma
Dry field 5.8 miles SW of Sonoma on Black Point cutoff
Comment
CAS-BOT-BC279347
Centromadia pungens subsp. pungens
John Thomas Howell
1965-5-9
41293
Tulare
About 4 1/2 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC179741
Centrostegia thurberi
John Thomas Howell; Gordon H. True
1967-7-3
42801
Tulare
about 1.5 miles from Lamont Meadow on road to Long Valley. Sierra Nevada. Kern Plateau
1737
Comment
CAS-BOT-BC388309
Cerastium glomeratum
John Thomas Howell
1946-4-13
s.n.
Marin
Near Rock Spring, Mt. Tamalpais
Comment
CAS-BOT-BC388312
Cerastium glomeratum
John Thomas Howell
1946-4-14
21629
Marin
Near Dillons Beach
Comment
CAS-BOT-BC135507
Cercocarpus betuloides var. betuloides
John Thomas Howell
1945-6-20
21114
Lake
Pinnacle Rock, Bartlett Mountain
Comment
CAS-BOT-BC135538
Cercocarpus betuloides var. betuloides
John Thomas Howell
1962-7-8
38195
Kern
Black Mt. burn, Greenhorn Mountains - Sierra Nevada
1066
Comment
UCD113092
Cercocarpus ledifolius
John Thomas Howell
1964-5-11
40702
Siskiyou
NE of Callahan on road to Gazelle.
Comment
CAS-BOT-BC143852
Cercocarpus ledifolius var. ledifolius
John Thomas Howell
1943-7-20
18598
Nevada
Castle Peak
Comment
CAS-BOT-BC279495
Chaenactis alpigena
John Thomas Howell
1942-8-7
17789
Tulare
Lost Canyon
3048
Comment
RSA810
Chaenactis artemisiifolia
J. T. Howell
1927-6-5
36
Orange
just to E of Rancho Santa Ana
152
Comment
CAS-BOT-BC276725
Chaenactis douglasii var. douglasii
John Thomas Howell
1960-8-20
36285
Plumas
Kelly Camp, near Drakesbad
1615
Comment
CAS-BOT-BC276788
Chaenactis douglasii var. douglasii
John Thomas Howell
1950-7-19
27115
Tulare
Pass N of Hessian Meadows
2743
Comment
CAS-BOT-BC276737
Chaenactis douglasii var. douglasii
John Thomas Howell
1960-8-22
36382
Shasta
Anklin Meadows
1889
Comment
CAS-BOT-BC277466
Chaenactis glabriuscula var. glabriuscula
John Thomas Howell
1931-6-4
6639
San Diego
2 miles n. of Fallbrook
Comment
CAS-BOT-BC279748
Chaenactis xantiana
John Thomas Howell
1958-5-22
33115
Tulare
Kern River Canyon 6 miles south of Roads End P.O.
944
Comment
POM204107
Chamaebatiaria millefolium
J. T. Howell
1934-7-4
12399
Siskiyou
SE corner of Siskiyou County
Comment
CDA4799
Chamaesyce prostrata
J. T. Howell
1974-9-12
50869
Alameda
Northwest corner of University of California campus, Berkeley.
0
Comment
CAS-BOT-BC166083
Chamerion angustifolium subsp. circumvagum
John Thomas Howell
1977-8-11
52679
Plumas
Canyon of Little Last Chance Creek between Chilcoot and Frenchmans Reservoir
1676
Comment
CAS-BOT-BC66352
Cheilanthes covillei
John Thomas Howell
1955-3-6
30146
Contra Costa
on south side of South Peak, Mt. Diablo
Comment
CAS-BOT-BC68172
Cheilanthes intertexta
John Thomas Howell
1943-3-7
17882
Marin
Hills northeast of San Rafael
Comment
RSA201411
Chenopodium album
J. T. Howell
1956-10-28
31932
San Francisco
Mountain Lake, Presidio; San Francisco.
Comment
CAS-BOT-BC460946
Chenopodium atrovirens
John Thomas Howell
1943-8-5
19087
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC471345
Chenopodium hians
John Thomas Howell; Gordon H. True
1967-8-8
43571
Tulare
Sierra Nevada, Kern Plateau. SE of Long Valley on road to Lamont Meadow
Comment
UCD98283
Chenopodium missouriense
John Thomas Howell
1952-10-26
28875
San Bernardino
San Bernardino.
Comment
CAS-BOT-BC426312
Chenopodium pratericola
John Thomas Howell
1950-7-13
26792
Tulare
Sierra Nevada, South Fork of Kern River: Bakeoven Meadows
2468
Comment
RSA743
Chilopsis linearis subsp. arcuata
J. T. Howell
1927-7-9
310
San Bernardino
Near Box Spring, Mojave Desert
1159
Comment
CAS-BOT-BC451429
Chimaphila menziesii
John Thomas Howell; Gordon True; Walter Knight; Irja Knight
1967-7-10
2153
Plumas
Butterfly Botanical Area and vicinity: Beargrass Glade
1127
Comment
UC876100
Chimaphila umbellata
John Thomas Howell
1939-8-5
15068
Siskiyou
Marble Mts., Spirit Lake
Comment
CAS-BOT-BC236911
Chloropyron maritimum subsp. palustre
John Thomas Howell
1939-7-2
s.n.
Marin
Almonte Marshes
Comment
UCD99698
Chorizanthe brevicornu var. spathulata
John Thomas Howell
1958-5-28
33550
Inyo
Sierra Nevada, Bishop Creek.
1950
Comment
SEINET4182624
Chorizanthe brevicornu var. spathulata
J. T. Howell
1958-5-28
33591
Inyo
Bishop Creek
1524
Comment
CAS-BOT-BC32868
Chorizanthe howellii
John Thomas Howell
1929-5-26
4233
Mendocino
Fort Bragg, Mendocino coastal plain
15
Comment
CAS-BOT-BC244703
Chorizanthe spinosa
John Thomas Howell
1957-6-24
32735
Kern
Desert slope, 2.5 miles ssw. of Red Rock Canyon
640
Comment
CAS-BOT-BC244800
Chorizanthe staticoides
John Thomas Howell
1931-5-29
6585
Los Angeles
Santa Susana Pass. On a burn in chaparral
Comment
CAS-BOT-BC248038
Chorizanthe watsonii
John Thomas Howell
1930-5-13
4976
Kern
Red Rock Canyon
Comment
CAS-BOT-BC36302
Chrysolepis sempervirens
John Thomas Howell
1946-7-20
s.n.
Fresno
Mono Rock
3352
Comment
CAS-BOT-BC36334
Chrysolepis sempervirens
John Thomas Howell
1925-9-22
s.n.
El Dorado
Emerald Bay, Lake Tahoe
Comment
RSA201324
Chrysolepis sempervirens
J. T. Howell
1960-7-20
35783
Plumas
Between boiling Springs Lake and Terminal Geyser.
1860
Comment
RSA201326
Chrysothamnus nauseosus subsp. albicaulis
J. T. Howell
1960-8-20
36283
Plumas
Kelly Camp, near Drakesbad.
1616
Comment
CAS-BOT-BC100815
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell
1959-9-25
35022
Plumas
Summit of Beckwourth Pass
1588
Comment
CAS-BOT-BC100877
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell; Gordon H. True
1967-8-9
43663 A
Tulare
ca. 4 miles north of Blackrock Guard Station on Monache Jeep Trail, Kern Plateau
2682
Comment
CAS-BOT-BC105942
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell
1962-9-23
38836
Kern
Along highway (perhaps adeventive), south side of Black mt. - Greenhortn Mountains
1066
Comment
JEPS75239
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell
1962-9-23
38836
Kern
s side of Black Mt.; Sierra Nevada, Greenhorn Mountains, Black Mt.
1066
Comment
CAS-BOT-BC285274
Cirsium andersonii
John Thomas Howell
1977-8-3
52536
Alpine
Just north of Ebbetts Pass
2682
Comment
CAS-BOT-BC105804
Cirsium andrewsii
John Thomas Howell
1957-10-5
32985
San Francisco
Fort Point, Presidio, San Francisco
Comment
SEINET5507050
Cirsium andrewsii
John Thomas Howell
1933-7-9
11424
San Francisco
Lake Merced, San Francisco
Comment
CAS-BOT-BC284417
Cirsium arvense
John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight
1967-7-10
2188
Plumas
Mouth of Butterfly Creek, Butterfly Botanical Area and vicinity
883
Comment
POM225838
Cirsium arvense
J. T. Howell
1931-6-17
6724
Humboldt
Redwood Highway, 1.5 miles north of Orick
Comment
CAS-BOT-BC105783
Cirsium crassicaule
John Thomas Howell
1933-7-20
11447
San Joaquin
2 miles nw of Lathrop Bridge on San Joaquin River
Comment
CAS-BOT-BC278007
Cirsium cymosum
John Thomas Howell
1934-6-10
11908
Lassen
Madeline Plains near Termo
Comment
CAS-BOT-BC279957
Cirsium douglasii var. breweri
John Thomas Howell
1960-7-24
35977
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC100918
Cirsium fontinale var. campylon
John Thomas Howell
1957-5-19
32369
Stanislaus
Del Puerto Canyon
518
Comment Read comments Jul 26 2020
CAS-BOT-BC100945
Cirsium fontinale var. fontinale
John Thomas Howell
1939-6-16
14743
San Mateo
Crystal Springs Lake
Comment
CAS-BOT-BC287981
Cirsium occidentale var. californicum
John Thomas Howell
1942-7-24
17051
Tulare
Canyon of East Fork of Kaweah River at Trauger's Spring
Comment
CAS-BOT-BC285516
Cirsium occidentale var. candidissimum
John Thomas Howell
1934-7-11
12562
Lassen
Eldridge, 10 miles se. of Fall River Mills
Comment
CAS-BOT-BC285647
Cirsium occidentale var. occidentale
John Thomas Howell
1926-4-24
1944
San Francisco
Lake Merced, San Francisco
Comment
CAS-BOT-BC280384
Cirsium occidentale var. venustum
John Thomas Howell
1942-7-27
17311
Tulare
Cliff Creek between Deer Creek and Pinto Lake
Comment
CAS-BOT-BC286592
Cirsium occidentale var. venustum
John Thomas Howell
1933-8-17
11556
San Benito
Near Hernandez
Comment
CAS-BOT-BC286405
Cirsium occidentale var. venustum
John Thomas Howell
1957-6-25
32751
Kern
Tehachapi Mts.
Comment
CAS-BOT-BC280449
Cirsium quercetorum
John Thomas Howell
1938-6-30
13940
Alameda
Berkeley Hills on ne. slope near head of Wildcat Canyon
Comment
POM261377
Cirsium quercetorum
J. T. Howell
1939-6-18
14774
Marin
Near Mud Lake
Comment
CAS-BOT-BC288695
Cirsium remotifolium
John Thomas Howell
1941-6-21
16314 A
Napa
Hills SW of St Helena
Comment
CAS-BOT-BC288738
Cirsium remotifolium
John Thomas Howell
1936-6-7
12631
Marin
Whites Hill E of San Geronimo
Comment
CAS-BOT-BC286459
Cirsium scariosum
John Thomas Howell
1952-10-24
28865
Riverside
South end of Santa Ana Mts.
Comment
CAS-BOT-BC286497
Cirsium scariosum
John Thomas Howell
1940-8-1
15814
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC292724
Cirsium scariosum
John Thomas Howell
1944-8-16
20614
Tuolumne
Mono Pass
Comment
CAS-BOT-BC438931
Cistanthe monandra
John Thomas Howell; Gordon H. True
1967-5-29
42345
Tulare
Midway between Chimney and Lamont Meadows. Kern Plateau.
1889
Comment
CAS-BOT-BC439077
Cistanthe monosperma
John Thomas Howell
1944-8-6
20006
Tuolumne
Between Dog Lake and Tuolumne Meadows
Comment
CAS-BOT-BC169793
Cistanthe pygmaea
John Thomas Howell
1942-7-31
17427
Tulare
Fish Big Arroyo
3017
Comment
CAS-BOT-BC228710
Cistanthe umbellata
John Thomas Howell
1958-8-12
34311
Madera
Near Isberg Lake
2987
Comment
CAS-BOT-BC228763
Cistanthe umbellata
John Thomas Howell
1963-7-12
39843
El Dorado
Meyers
1935
Comment
CAS-BOT-BC228782
Cistanthe umbellata
John Thomas Howell
1958-7-23
33814
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC229068
Cistanthe umbellata
John Thomas Howell; Gordon H. True
1967-8-7
43405
Tulare
About 3 miles northwest of Beach Meadow, Kern Plateau
2499
Comment
CAS-BOT-BC229090
Cistanthe umbellata
John Thomas Howell
1950-7-22
27235
Tulare
Summit ridge, Olancha Peak
3698
Comment
CAS-BOT-BC162649
Clarkia
John Thomas Howell; Gordon H. True
1971-5-26
47625
Placer
Northern limits of Lincoln
48
Comment
CAS-BOT-BC172325
Clarkia bottae
John Thomas Howell
1928-4-22
3756
Ventura
Bank above lagoon at Pt. Mugu
Comment
CAS-BOT-BC164454
Clarkia dudleyana
John Thomas Howell; Gordon H. True
1971-6-14
47681
Kern
3 miles east of Glennville on Greenhorn Mt. road
1219
Comment
CAS-BOT-BC164485
Clarkia epilobioides
John Thomas Howell
1931-4-10
6223
Santa Barbara
Puerta Zuela, Santa Cruz Island
Comment
CAS-BOT-BC172452
Clarkia purpurea subsp. purpurea
John Thomas Howell
1938-5-22
13796
Marin
San Anselmo Canyon
Comment
RSA114321
Clarkia purpurea subsp. purpurea
J. T. Howell
1947-5-21
23187
Marin
Tiburon.
Comment
CAS-BOT-BC163652
Clarkia purpurea subsp. quadrivulnera
John Thomas Howell
1962-6-16
37599
Butte
Feather River West Branch sw. of Nelson Bar
304
Comment
JEPS33714
Clarkia rhomboidea
John Thomas Howell
1926-7-20
2081
Plumas
near Prattville
1463
Comment
RSA512847
Clarkia speciosa subsp. polyantha
J. T. Howell, G. H. True
1971-7-12
48332
Kern
West slope of Greenhorn Range, 3 miles east of Glenville.
1220
Comment
RSA118046
Clarkia speciosa subsp. speciosa
J. T. Howell
1955-7-8
30626
Monterey
Santa Lucia Camp, Arroyo Seco River.
610
Comment
CAS-BOT-BC165879
Clarkia xantiana
John Thomas Howell; Gordon H. True
1970-6-23
46604
Tulare
Kern River Canyon at Gold Ledge Creek
944
Comment
CAS-BOT-BC439272
Claytonia exigua subsp. exigua
John Thomas Howell
1933-4-23
11178
San Benito
Near Hernandez
Comment
CAS-BOT-BC439188
Claytonia exigua subsp. exigua
John Thomas Howell; Gordon H. True
1971-6-15
47735
Kern
South end of Havilah Canyon
1310
Comment
CAS-BOT-BC439226
Claytonia exigua subsp. exigua
John Thomas Howell
1943-5-2
17937
Marin
Carson Ridge
Comment
POM225662
Claytonia perfoliata
J. T. Howell
1931-3-10
5755
Contra Costa
East side of Mt. Diablo 7 miles from Clayton on Livermore road.
Comment
CAS-BOT-BC440000
Claytonia perfoliata subsp. mexicana
John Thomas Howell
1931-4-13
6319
Santa Barbara
Santa Cruz Island near west end.
Comment
CAS-BOT-BC440084
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1958-7-26
33971
Fresno
Tehipite Valley, Middle Fork of the Kings River
1280
Comment
CAS-BOT-BC443592
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1946-4-13
21604
Marin
Near Rock Spring, Mt. Tamalpais
Comment
CAS-BOT-BC439756
Claytonia rubra subsp. depressa
John Thomas Howell; Gordon H. True
1965-7-14
2306 A
Nevada
Loney Meadow on Texas Creek, 1.5 miles south of Bowman Lake.
1828
Comment
CAS-BOT-BC439760
Claytonia rubra subsp. depressa
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49179
Lassen
Elysian Valley northwest of Janesville
1325
Comment
CAS-BOT-BC443723
Claytonia rubra subsp. rubra
John Thomas Howell
1925-5-29
1105
El Dorado
Emerald Bay Camp, Lake Tahoe.
1889
Comment
CAS-BOT-BC392078
Clematis
John Thomas Howell
1954-5-17
29659
El Dorado
4 miles north of Placerville
Comment
CAS-BOT-BC91374
Clematis lasiantha
John Thomas Howell
1945-6-21
21187
Lake
Bartlett Mountain. Sawmill Flat to Ruppert Ridge.
Comment
CAS-BOT-BC91431
Clematis lasiantha
John Thomas Howell
1963-5-5
39017
Monterey
Mustang Grade, west of Priest Valley.
670
Comment
CAS-BOT-BC500960
Clintonia uniflora
John Thomas Howell
1939-8-3
15015
Siskiyou
Spirit Lake
1828
Comment
SDSU13799
Cneoridium dumosum
Bill Howell,
1998-3-9
San Diego
North side of Fortuna Mountain, Mission Trails Regional Park.
274
Comment
CAS-BOT-BC143440
Coleogyne ramosissima
John Thomas Howell
1958-5-25
33397
Inyo
Whitney Portal Road
1889
Comment
UCR17877
Collinsia parryi
J. T. Howell
1928-5-6
s.n.
Los Angeles
San Gabriel Mtns, Big Santa Anita Canyon: East Fork Trail
854
Comment
UCD101794
Comandra umbellata subsp. californica
John Thomas Howell
1954-6-4
29915
Tuolumne
Twain Harte.
1127
Comment
UCD101796
Comandra umbellata subsp. californica
John Thomas Howell
1958-7-30
34118
Fresno
on trail to Tehipite Valley, Middle Fork of Kings River, west of Simpson Meadow.
1798
Comment
UCD95631
Consolida ajacis
John Thomas Howell
1950-5-20
26312
Tulare
Visalia.
Comment
CAS-BOT-BC237963
Cordylanthus rigidus subsp. brevibracteatus
John Thomas Howell
1962-7-11
38564
Kern
Nw. slope of Black Mt., Greenhorn Mountains
2133
Comment
CAS-BOT-BC238075
Cordylanthus rigidus subsp. brevibracteatus
John Thomas Howell; Gordon H. True
1971-6-17
48024
Kern
0.5 mile east of Bodfish Gap
1219
Comment
GH365863
Cordylanthus rigidus subsp. brevibracteatus
J. T. Howell
1962-9-22
38768
Unknown
1.5 miles south of Summit. Greenhorn Mountains.
1950
Comment
UCR88755
Cordylanthus rigidus subsp. brevibracteatus
J. T. Howell
1962-9-22
38768
Kern
Greenhorn Mtns., 1.5 mi south of Summit
1951
Comment
RSA99632
Cordylanthus rigidus subsp. rigidus
J. T. Howell
1954-11-3
30124
Monterey
Santa Lucia Memorial Park, Arroyo Seco River.
Comment
CAS-BOT-BC287737
Coreopsis bigelovii
John Thomas Howell; Gordon H. True
1971-6-15
47764
Kern
Flying Dutchman Creek canyon on Havilah - Mt Breckenridge Rd
1188
Comment
UC729611
Coreopsis californica var. californica
J. T. Howell
1929-2-14
1232
Riverside
2 mi s Glen Ivy; Temescal Canyon
Comment
CAS-BOT-BC101373
Corethrogyne filaginifolia
John Thomas Howell
1927-11-27
3266
San Diego
12 miles s. of Warner's Hot Springs
822
Comment
CAS-BOT-BC101599
Corethrogyne filaginifolia
John Thomas Howell
1952-10-28
28910
Tulare
Generals Highway 3 miles from Grant Grove
Comment
CAS-BOT-BC101206
Corethrogyne filaginifolia
John Thomas Howell
1972-10-12
49104
Monterey
Julia Pfeiffer Burns State Park, Santa Lucia Mts.
Comment
CAS-BOT-BC209722
Cornus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-26
54363
Plumas
0.75 miles northeast of Bucks Summit on road to Quincy
1600
Comment
RSA41990
Cornus occidentalis
J. T. Howell
1936-8-23
1586
Trinity
Preacher Camp Ground. 4 mi. W. of Scott Ranch, Trinity Center.
Comment
CAS-BOT-BC210311
Cornus sericea
John Thomas Howell
1961-6-21
36632
Plumas
Greenville
1097
Comment
CAS-BOT-BC212199
Cornus sericea
John Thomas Howell; Gordon H. True
1969-9-29
46322
Kern
Fay Creek southeast of True Meadow, Kern Plateau, Sierra Nevada
2072
Comment
CAS-BOT-BC212208
Cornus sericea
John Thomas Howell; Gordon H. True
1973-7-31
50043
Lassen
On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada
1783
Comment
CAS-BOT-BC172840
Corylus cornuta subsp. californica
John Thomas Howell; Gordon H. True
1970-5-27
46534
El Dorado
near headquarters, Blodgett Experimental Forest. Sierra Nevada
1280
Comment
CAS-BOT-BC287280
Cotula australis
John Thomas Howell
1958-5-17
33029
San Francisco
E of Band Concourse, Golden Gate Park, San Francisco
Comment
CAS-BOT-BC291356
Cotula coronopifolia
John Thomas Howell
1925-4-11
958
Napa
Soscol
Comment
CAS-BOT-BC427602
Crassula aquatica
John Thomas Howell
1926-11-7
2243
San Francisco
Lake Merced, San Francisco.
Comment
CAS-BOT-BC290326
Crepis
John Thomas Howell
1962-6-17
37724
Plumas
Portola
1463
Comment
CAS-BOT-BC290390
Crepis acuminata
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49462
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC290453
Crepis acuminata
John Thomas Howell
1951-6-28
27641
Plumas
Johnsville
1584
Comment
CAS-BOT-BC290481
Crepis acuminata
John Thomas Howell
1969-8-28
46043
Tulare
Mineral King
2377
Comment
UC1177286
Crepis capillaris
John Thomas Howell
1945-7-29
21338
Marin
Bolinas
Comment
POM203850
Crepis occidentalis subsp. pumila
J. T. Howell
1934-6-10
11872
Lassen
Janesville
Comment
CAS-BOT-BC189379
Cryptantha circumscissa
John Thomas Howell; Gordon H. True
1971-6-16
47899
Kern
Along Kelso Creek, 15 miles S of Weldon on road to Kelso Valley
1219
Comment
CAS-BOT-BC189434
Cryptantha circumscissa
John Thomas Howell; Gordon H. True
1967-7-5
43140
Tulare
6 miles N of South Fork Kern River Bridge on road to Troy Meadow, Kern Plateau
2286
Comment
CAS-BOT-BC189439
Cryptantha circumscissa
John Thomas Howell; Gordon H. True
1969-10-1
46446
Tulare
Taylor Meadow, Kern Plateau
2286
Comment
CAS-BOT-BC218892
Cryptantha circumscissa subsp. rosulata
John Thomas Howell
1949-7-27
25830
Tulare
Whitney Meadows
2956
Comment
RSA641
Cryptantha clevelandii
J. T. Howell
1927-7-22
460
Orange
North of Botany Garden, Rancho Santa Ana.
274
Comment
UC1042564
Cryptantha flaccida
John Thomas Howell
1952-6-14
28342
Siskiyou
9.5 mi from Ft. Jones (on road to Callahan)
853
Comment
CAS-BOT-BC218788
Cryptantha glomeriflora
John Thomas Howell
1949-7-25
25723
Tulare
Siberian Pass Creek
3352
Comment
CAS-BOT-BC218821
Cryptantha glomeriflora
John Thomas Howell
1942-8-5
17752
Tulare
Big Arroyo
3017
Comment
CAS-BOT-BC218773
Cryptantha humilis
John Thomas Howell
1943-7-20
18625
Nevada
Castle Peak
Comment
CAS-BOT-BC215240
Cryptantha incana
John Thomas Howell
1962-7-11
38545
Kern
Black mountain, northwest slope. Greenhorn Mountains.
2133
Comment
CAS-BOT-BC54150
Cryptantha intermedia
John Thomas Howell
1934-7-1
12334
Modoc
Duncan Horse Camp.
1355
Comment
CAS-BOT-BC230709
Cryptantha rattanii
John Thomas Howell
1963-4-25
38965
Stanislaus
Arroyo del Puerto
Comment
SBBG28776
Cryptantha sparsiflora
J. T. Howell
1955-5-21
30236
Monterey
Hastings Reservation
Comment
CAS-BOT-BC54122
Cryptantha torreyana
John Thomas Howell
1934-6-13
12044
Modoc
Fandango Pass, Warner Mountains
1828
Comment
CAS-BOT-BC70396
Cryptogramma acrostichoides
John Thomas Howell
1925-7-2
1321 A
El Dorado
Trail to Desolation Valley above Glen Alpine, Lake Tahoe region
Comment
CAS-BOT-BC85460
Cupressus sargentii
John Thomas Howell
1931-9-26
8092
Sonoma
Serpentine outcrop 2 miles from Monte Rio on road to Camp Meeker
Comment
CAS-BOT-BC85478
Cupressus sargentii
John Thomas Howell
1927-8-22
3040
Marin
On rocky slope on Rock Spring Trail west of West Point, Mt. Tamalpais
548
Comment
LA210096
Cuscuta californica
John Thomas Howell;
1930-10-11
5552
San Joaquin
5 mi. S of Stockton
Comment
SBBG41367
Cuscuta californica
J. T. Howell
1944-9-3
Marin
head of Cascade Cyn, Mt Tamalpais
Comment
SEINET891445
Cuscuta occidentalis
John Thomas Howell
1958-1
34169
Fresno
Tent Meadow (lower), Copper Creek Canyon; plants of Sierra Nevada
Comment
CAS-BOT-BC287338
Cynara cardunculus
John Thomas Howell
1956-11-14
31961
San Mateo
Bayshore Highway just S of Main St, Redwood City
Comment
CAS-BOT-BC190333
Cynodon dactylon
John Thomas Howell
1964-4-29
40688
Tuolumne
Sierra Nevada. At Tuolumne River bridge, 2.5 mile east of Jacksonville.
198
Comment
CDA1950
Cynosurus echinatus
J. T. Howell
1943-7-28
18906
El Dorado
Placerville
Comment
UCD141009
Cyperus difformis
John Thomas Howell
1959-9-20
34637
Butte
eastern outskirts of Oroville.
60
Comment
RSA78
Cyperus esculentus
J. T. Howell
1927-7-15
408
Orange
Santa Ana River, Rancho Santa Ana [Botanic Garden]
152
Comment
CAS-BOT-BC113854
Cyperus niger var. capitatus
John Thomas Howell
1976-10-29
52302
El Dorado
Along the course of Sweetwater Creek below the high-water line of Folsom Lake.
121
Comment
CAS-BOT-BC113925
Cyperus odoratus
John Thomas Howell
1974-9-19
50878
Sutter
On the edge of rice fields, 1.7 mi S of Robbins on road to Knights landing.
7
Comment
CAS-BOT-BC114099
Cyperus squarrosus
John Thomas Howell
1962-9-25
s.n.
Kern
Bed of Kern River 3 mi. N of Kernville.
822
Comment
CAS-BOT-BC114101
Cyperus squarrosus
John Thomas Howell
1962-7-7
38153
Kern
Kern River Canyon.
304
Comment
CAS-BOT-BC114153
Cyperus squarrosus
John Thomas Howell
1936-8-25
12777
Trinity
Near Trinity Center.
Comment
CAS-BOT-BC67985
Cystopteris fragilis
John Thomas Howell
1946-7-14
22301
Inyo
Rock Creek Lake Basin - Mosquito Flat
3139
Comment
CAS-BOT-BC70578
Cystopteris fragilis
John Thomas Howell
1958-8-13
34372
Madera
Near Isberg Lake
2987
Comment
CAS-BOT-BC189791
Dactylis glomerata
John Thomas Howell
1943-8-9
19239
Glenn
Plaskett Meadows.
1828
Comment
CAS-BOT-BC189843
Dactylis glomerata
John Thomas Howell
1960-8-20
36249
Tehama
Near Lassen Volcanic National Park. Morgan.
1463
Comment
CAS-BOT-BC445493
Damasonium californicum
John Thomas Howell
1962-6-18
37824
Sierra
Sierra Valley, 1.5 mi. e. of Calpine
1524
Comment
CAS-BOT-BC293659
Deinandra corymbosa
John Thomas Howell
1929-10-11
4453
Monterey
Pt. Lobos
Comment
CAS-BOT-BC293979
Deinandra fasciculata
John Thomas Howell
1931-5-29
6565
Ventura
Little Sycamore Creek on Malibu Highway to Oxnard
Comment
CAS-BOT-BC294093
Deinandra kelloggii
John Thomas Howell
1969-6-2
45787
Merced
Santa Fe Drive near R Street, Merced
Comment
CAS-BOT-BC291785
Deinandra lobbii
John Thomas Howell
1933-9-17
11683
Solano
2 miles west of Rio Vista Junction
Comment
CAS-BOT-BC291853
Deinandra lobbii
John Thomas Howell
1930-10-24
5634
Monterey
17.2 miles east of The Indians, Santa Lucia Mts.
Comment
CAS-BOT-BC291797
Deinandra lobbii
John Thomas Howell
1933-7-20
11450
Alameda
Midway
Comment
CAS-BOT-BC9614
Delphinium californicum
John Thomas Howell
1943-6-13
s.n.
Marin
Sausalito
Comment
CAS-BOT-BC9017
Delphinium decorum
John Thomas Howell
1931-4-18
6413
Sonoma
Larkspur Rock near Bodega Bay
Comment
CAS-BOT-BC8867
Delphinium glaucum
John Thomas Howell
1925-7-2
1314
El Dorado
Between Fallen Leaf Camp and Glen Alpine Lodge, Lake Tahoe region
Comment
CAS-BOT-BC8733
Delphinium hansenii var. arcuatum
John Thomas Howell
1926-5-4
1972
Merced
Merced Plains, 9 miles SW of Merced
Comment
CAS-BOT-BC10100
Delphinium luteum
John Thomas Howell
1931-4-18
6415
Sonoma
Larkspur Rock, near Bodega Bay
Comment
CAS-BOT-BC116019
Delphinium nuttallianum
J. T. Howell
1958-8-17
34544
Madera
Between Cora Lake and The Niche, East Fork of Granite Creek
2560
Comment
CAS-BOT-BC7997
Delphinium parishii subsp. parishii
J. T. Howell; Gordon H. True
1967-7-5
43074
Tulare
Open sagebrush slope, 6.4 miles north of Chimney Meadow Kern Plateau
Comment
CAS-BOT-BC121743
Delphinium patens subsp. patens
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54264
Plumas
About 1.4 mi. southeast of summit of Mt. Hough on road to Quincy
1950
Comment
CAS-BOT-BC121910
Delphinium pratense
John Thomas Howell
1950-7-20
27120
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC7770
Delphinium variegatum subsp. variegatum
John Thomas Howell
1941-4-5
16175
Sonoma
1 mile S of El Verano
Comment
CAS-BOT-BC82841
Dendromecon harfordii
John Thomas Howell
1931-4-12
6275
Santa Barbara
Santa Cruz Island. Cochie Canyon.
Comment
UCD61128
Deschampsia cespitosa
John Thomas Howell
1944-8-5
19980
Tuolumne
Tuolumne Meadows.
Comment
CAS-BOT-BC192516
Deschampsia cespitosa subsp. cespitosa
John Thomas Howell; Gordon H. True
1966-7-11
41620
Tulare
Poison Meadow, Kern Plateau
2286
Comment
CAS-BOT-BC198102
Deschampsia danthonioides
John Thomas Howell
1924-5-30
356
Mariposa
Wawona
1219
Comment
CAS-BOT-BC201663
Deschampsia danthonioides
John Thomas Howell
1948-4-26
24280
Tulare
Near Earlimart
88
Comment
CAS-BOT-BC198484
Deschampsia danthonioides
John Thomas Howell
1965-4-25
41090
Madera
Rolling vally lands 7 miles northeast of Madera.
Comment
CAS-BOT-BC195569
Deschampsia elongata
John Thomas Howell
1944-8-5
19928
Tuolumne
Soda Springs, Tuolumne Meadows
Comment
CAS-BOT-BC201813
Deschampsia elongata
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49467
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC43045
Descurainia incisa subsp. incisa
John Thomas Howell
1942-8-5
17679
Tulare
Between Big Arroyo and Chagoopa Plateau.
Comment
CAS-BOT-BC43090
Descurainia nelsonii
John Thomas Howell
1934-7-7
12476
Lassen
Harvey Valley.
Comment
CAS-BOT-BC43409
Descurainia pinnata subsp. glabra
John Thomas Howell; Gordon H. True
1969-5-13
s.n.
Tulare
Sierra Nevada. Kern Plateau. Spanish Needle Creek road.
1280
Comment
CAS-BOT-BC43443
Descurainia sophia
John Thomas Howell
1958-5-25
33344
Inyo
Sierra Nevada. Corral on Carroll Creek.
1676
Comment
CAS-BOT-BC43504
Descurainia sophia
John Thomas Howell
1975-7-22
s.n.
Plumas
Sierra Nevada. Quincy.
1036
Comment
CAS-BOT-BC254523
Dichanthelium acuminatum subsp. acuminatum
John Thomas Howell
1961-9-22
36729
Butte
Feather River, Oroville
53
Comment
SEINET8159521
Dichanthelium acuminatum var. thermale
J. T. Howell
1939-1
15292
Unknown
Comment
CAS-BOT-BC500807
Dichelostemma capitatum
John Thomas Howell
1956-6-10
31555
San Francisco
North slope of Bay View Hills
Comment
RSA201452
Dichondra donelliana
J. T. Howell
1947-5-8
23147
Marin
Sausalito
Comment
CAS-BOT-BC292259
Dieteria canescens
John Thomas Howell
1974-7-8
50470
Lassen
Susanville
1295
Comment
CAS-BOT-BC293003
Dieteria canescens
John Thomas Howell; Gordon H. True
1967-9-18
43800
Tulare
Long Valley. Kern Plateau
1767
Comment
CAS-BOT-BC299788
Dieteria canescens var. canescens
John Thomas Howell
1964-10-23
40989
Inyo
Whitney Portal Road, Sierra Nevada
2255
Comment
CAS-BOT-BC290947
Dieteria canescens var. shastensis
John Thomas Howell
1943-8-10
19255
Glenn
Black Butte
Comment
CAS-BOT-BC49471
Dieteria canescens var. shastensis
John Thomas Howell
1934-7-1
12321
Modoc
Duncan Horse Camp.
1355
Comment
CAS-BOT-BC209068
Digitaria sanguinalis
John Thomas Howell
1956-12-4
32001
Mariposa
Merced River Canyon, 1 mile below South Fork confluence - Sierra Nevada
Comment
CAS-BOT-BC209116
Digitaria sanguinalis
John Thomas Howell
1957-9-26
32981
Sonoma
Sandy Russian River bottom near Guerneville.
Comment
CAS-BOT-BC152295
Diplacus congdonii
John Thomas Howell
1946-3-24
21586
Marin
Burned area in Carson country.
Comment
CAS-BOT-BC151931
Diplacus douglasii
John Thomas Howell
1954-5-17
29721
El Dorado
1 mile southwest of Garden Valley - Sierra Nevada
Comment
CAS-BOT-BC151743
Diplacus kelloggii
John Thomas Howell
1964-4-27
40537
Mariposa
Merced River Canyon just west of El Portal - Sierra Nevada
640
Comment
CAS-BOT-BC153541
Diplacus leptaleus
John Thomas Howell
1942-7-30
17425
Tulare
Little Five Lakes Basin
Comment
CAS-BOT-BC153568
Diplacus leptaleus
John Thomas Howell
1944-8-11
20323
Tuolumne
Lambert Dome, Tuolumne Meadows
Comment
CAS-BOT-BC151415
Diplacus mephiticus
John Thomas Howell
1950-7-18
27060
Tulare
Big dune, Bakeoven Meadows, South Fork of Kern River - Sierra Nevada
2468
Comment
CAS-BOT-BC151388
Diplacus viscidus
John Thomas Howell
1954-5-11
s.n.
Amador
Edge of chaparral, road n. of Buena Vista - Sierra Nevada
Comment
CAS-BOT-BC154242
Diplacus whitneyi
John Thomas Howell; Gordon H. True
1970-7-29
47136
Tulare
Pine Flat. Kern Plateau
2194
Comment
UC1042323
Dirca occidentalis
John Thomas Howell
1954-7-8
30012
San Mateo
canyon 0.5 mi below Lake Pilarcitos Dam
Comment Read comments Feb 2 2012
CAS-BOT-BC195665
Distichlis spicata
John Thomas Howell
1963-11-19
40388
Monterey
Near Southern Pacific station, Monterey
Comment
CAS-BOT-BC208714
Distichlis spicata
John Thomas Howell
1970-11-8
47542
Kern
South Fork Kern River Bridge on road from Weldon to Kernville - Sierra Nevada
792
Comment
POM203995
Dodecatheon clevelandii subsp. patulum
J. T. Howell
1933-3-31
10917
San Francisco
Bernal Heights.
Comment
UC517947
Dodecatheon hendersonii
John Thomas Howell
1931-3-10
5756
Contra Costa
on Livermore Road 7 mi from Clayton; e side Mt. Diablo, 7 mi from Clayton
Comment
CAS-BOT-BC41948
Draba albertina
John Thomas Howell
1958-8-12
34304
Madera
Sierra Nevada. Near Isberg Lake.
2987
Comment
CAS-BOT-BC41967
Draba albertina
John Thomas Howell
1946-7-19
22523
Fresno
Fourth Recess.
3078
Comment
CAS-BOT-BC42030
Draba albertina
John Thomas Howell
1942-7-25
17181
Tulare
Eagle Lake Trail near Mineral King.
Comment
RSA88500
Draba albertina
J. T. Howell
1951-7-20
28003
Tulare
Southeast of Farewell Gap. Mineral King and vicinity.
3293
Comment
CAS-BOT-BC41579
Draba breweri
John Thomas Howell
1950-7-22
27226
Tulare
Summit ridge, Olanche Peak.
3698
Comment
CAS-BOT-BC41831
Draba breweri
John Thomas Howell
1947-8-7
23865
Inyo
Big Pine Lakes. West of Sixth Lake.
3413
Comment
CAS-BOT-BC41612
Draba corrugata var. corrugata
John Thomas Howell
1947-7-23
23551
San Bernardino
San Bernardino Mountains. Dollar Lake.
2865
Comment
CAS-BOT-BC41644
Draba cruciata
John Thomas Howell
1942-7-25
17156
Tulare
Eagle Lake Trail near Mineral King.
Comment
CAS-BOT-BC41808
Draba lemmonii
John Thomas Howell
1946-7-26
22747
Inyo
Mono Mesa.
3657
Comment
CAS-BOT-BC41298
Draba praealta
John Thomas Howell
1944-8-10
20262
Mono
East wall of Glacier Canyon on way to Dana Plateau, Mount Dana.
3352
Comment
GH379342
Draba sierrae
J. T. Howell
1941-7-22
16381
Unknown
Mono Pass, Fresno-Inyo Cos.
3505
Comment
CAS-BOT-BC41385
Draba verna
John Thomas Howell
1957-4-28
32050
Monterey
Santa Lucia Mountains. Near Hastings Reservation.
594
Comment
LA208036
Drymocallis glandulosa
John Thomas Howell;
1930-6-8
5289
Sonoma
8.5 mi. N of Bodega Bay
Comment
CAS-BOT-BC159660
Drymocallis glandulosa
John Thomas Howell
1960-6-5
35309
Fresno
2.8 mi. n. of Cherry Gap - Sierra Nevada
1828
Comment
CAS-BOT-BC534993
Drymocallis glandulosa var. reflexa
John Thomas Howell
1923-6-22
76
Mariposa
Shady moist slope at Stella Lake, Wawona
1219
Comment
CAS-BOT-BC428000
Dudleya caespitosa
John Thomas Howell
1939-7-2
14824 A
Marin
Elk Valley
Comment
CAS-BOT-BC428004
Dudleya caespitosa
John Thomas Howell
1946-6-30
22150
Marin
Rodeo Lagoon
Comment
CAS-BOT-BC428223
Dudleya cymosa subsp. paniculata
John Thomas Howell
1963-5-7
39263
Monterey
On San Lorenzo Creek, 6 miles northeast of King City
182
Comment
JEPS49946
Dudleya densiflora
J. T. Howell
1928-6-12
Los Angeles
Fish Canyon San Gabriel Mtns
Comment
CAS-BOT-BC291107
Eastwoodia elegans
John Thomas Howell
1957-5-19
32317
Stanislaus
Del Puerto Canyon
Comment
CAS-BOT-BC197099
Echinochloa crus-galli
John Thomas Howell
1973-7-9
49686
Butte
West Branch of Feather River on Feather River highway
304
Comment
CAS-BOT-BC197261
Echinochloa muricata var. microstachya
John Thomas Howell
1980-9-8
53892
Marin
Bottom of Alpine Lake near Bon Temple Lake dam
Comment
CAS-BOT-BC113753
Eleocharis acicularis
John Thomas Howell
1950-7-18
27057
Tulare
Bakeoven Meadows, South Fork of Kern River. Vicinity of mineral springs.
2468
Comment
CAS-BOT-BC113547
Eleocharis bella
John Thomas Howell
1944-8-5
19984
Tuolumne
Near Parsons Lodge
Comment
CAS-BOT-BC112867
Eleocharis macrostachya
John Thomas Howell
1944-6-25
19640
Marin
San Rafel
Comment
CAS-BOT-BC112936
Eleocharis macrostachya
John Thomas Howell
1957-8-6
32876
San Francisco
Pond in Strybing Aboretum, Golden Gate Park
Comment
CAS-BOT-BC113331
Eleocharis montevidensis
John Thomas Howell
1927-7-6
2660
Orange
Wet soil of Santa Ana River bottom, Santa Ana Canyon.
152
Comment
CAS-BOT-BC113144
Eleocharis palustris
John Thomas Howell
1959-6-19
1210
Sierra
Open meadow, summit Yuba Pass.
2042
Comment
CAS-BOT-BC113310
Eleocharis parishii
John Thomas Howell
1927-7-9
2681
San Bernardino
Wet ground at Box S Spring, Mojave Desert.
1082
Comment
CAS-BOT-BC112088
Eleocharis quinqueflora
John Thomas Howell
1940-8-9
16082
Fresno
Bullfrog Lake
Comment
CAS-BOT-BC112148
Eleocharis quinqueflora
John Thomas Howell; Gordon H. True
1970-6-23
46651
Tulare
Forest border, NE end of Big Meadow, Kern Plateau
2377
Comment
RSA517885
Eleocharis radicans
J. T. Howell
1967-11-5
44133
Kern
Kern River 2 miles above Kernville.
823
Comment
CAS-BOT-BC112253
Eleocharis rostellata
John Thomas Howell
1962-9-25
38918
Kern
Near Kernsville
807
Comment
UCR139457
Elymus
J. T. Howell
1947-8-8
23925
Inyo
Sierra Nevada Mtns., Second to Third Lake, Big Pine Lakes
3049
Comment
CAS-BOT-BC203827
Elymus X hansenii
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-26
53069
Calaveras
Near Dorrington
1524
Comment
CAS-BOT-BC203835
Elymus X hansenii
John Thomas Howell
1960-7-18
35597
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC203856
Elymus X hansenii
John Thomas Howell
1948-5-31
24325
Marin
Devils Gulch near Camp Taylor
Comment
UC1106101
Elymus X hansenii
John Thomas Howell
1943-6-6
18206
Marin
ridge se Muir Woods
Comment
CAS-BOT-BC127529
Elymus X saundersii
John Thomas Howell
1949-8-7
26134
Tulare
Rock Creek
3048
Comment
UCD62824
Elymus X saundersii
John Thomas Howell
1944-8-14
20450 A
Tuolumne
Glen Aulin Trail west of Delaney Creek, Tuolumne Meadows.
Comment
CAS-BOT-BC225720
Elymus elymoides
John Thomas Howell; Gordon H. True
1971-7-15
48555
Tulare
On Dome Lands Trail about 0.5 miles south of Church Dome, Kern Plateau, Sierra Nevada
2316
Comment
CAS-BOT-BC225742
Elymus elymoides
John Thomas Howell
1969-8-25
45915
Tulare
Near site of former store, Mineral King, Sierra Nevada
2377
Comment
CAS-BOT-BC227140
Elymus elymoides
John Thomas Howell
1943-8-3
18978
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC227302
Elymus elymoides
John Thomas Howell
1946-7-27
22787
Fresno
Unglaciated ridge northwest of Mono Pass
3657
Comment
UCD61543
Elymus elymoides
John Thomas Howell
1944-8-9
20177
Tuolumne
Near Parsons Lodge, Tuolumne Meadows.
Comment
UCD61498
Elymus elymoides var. californicus
John Thomas Howell
1977-8-3
52564
Alpine
Just north of Ebbetts Pass.
2682
Comment
CAS-BOT-BC203441
Elymus glaucus subsp. glaucus
John Thomas Howell
1946-8-30
22925
El Dorado
Upper Angora Lake
Comment
CAS-BOT-BC203494
Elymus glaucus subsp. glaucus
John Thomas Howell
1943-6-6
18209
Marin
Canyon below Muir Woods
Comment
CAS-BOT-BC206736
Elymus glaucus subsp. glaucus
John Thomas Howell
1947-7-18
23427
Los Angeles
Big Pines, San Gabriel Mts.
2103
Comment
CAS-BOT-BC206789
Elymus glaucus subsp. glaucus
John Thomas Howell
1927-6-17
2553
Orange
Hills on north side of Santa Ana Canyon.
152
Comment
CAS-BOT-BC203813
Elymus glaucus subsp. virescens
John Thomas Howell
1947-5-14
23161
Marin
McClure Beach
Comment
CAS-BOT-BC234048
Elymus multisetus
John Thomas Howell
1963-6-21
39483
Monterey
Mustang Grade, east of San Lorenzo Creek
Comment
CAS-BOT-BC234108
Elymus multisetus
John Thomas Howell
1962-6-15
37528
Butte
Magalia, Sierra Nevada
731
Comment
RSA127391
Elymus multisetus
J. T. Howell
1941-5-25
16239
Marin
Near Bootjack, Mt. Tamalpais
Comment
CAS-BOT-BC213821
Elymus repens
John Thomas Howell
1976-7-15
51832
Plumas
Quincy - Sierra Nevada
1051
Comment
CAS-BOT-BC204404
Elymus trachycaulus subsp. trachycaulus
John Thomas Howell
1967-6-23
42727
Plumas
East Branch Feather River, 3.5 miles east of Rich Bar
762
Comment
CAS-BOT-BC213520
Elymus trachycaulus subsp. trachycaulus
John Thomas Howell
1942-8-5
17715
Tulare
Between Big Arroyo and Chagoopa Plateau
Comment
RSA299617
Elymus trachycaulus subsp. trachycaulus
J. T. Howell
1973-7-10
49776
Lassen
Fredonyer Pass
1738
Comment
NY70338
Ephedra nevadensis
J. T. Howell
1962-5-21
37146
Kern
Sierra Nevada: northeast of Lake Isabella
792.5
Comment
CAS-BOT-BC81945
Ephedra viridis
John Thomas Howell
1948-6-14
24345
Kern
Cedar Canyon
609
Comment
CAS-BOT-BC82029
Ephedra viridis
John Thomas Howell; Gordon H. True
1967-7-5
43123
Tulare
6 miles north of South Fork Kern River bridge on road to Troy Meadow, Kern Plateau
2286
Comment
RSA44277
Epilobium anagallidifolium
J. T. Howell
1947-8-9
23963
Inyo
Seventh Lake. Big Pine Lakes.
3415
Comment
CAS-BOT-BC191024
Epilobium brachycarpum
John Thomas Howell
1934-7-1
12309
Modoc
Duncan Horse Camp.
1355
Comment
JEPS33712
Epilobium brachycarpum
John Thomas Howell
1926-7-11
2054
Santa Clara
San Antonio Valley
914
Comment
RSA209510
Epilobium canum subsp. canum
J. T. Howell
1963-8-7
40074
Monterey
Mustang Grade between Mustang Summit and San Lorenzo Creek.
Comment
RSA44281
Epilobium hornemannii subsp. hornemannii
J. T. Howell
1947-8-15
24126
Inyo
Fifth Lake, Big Pines Lake.
3354
Comment Read comments Dec 22 2008
POM259601
Epilobium lactiflorum
J. T. Howell
1939-8-2
14868
Siskiyou
Spirit Lake, Marble Mountains.
1829
Comment
CAS-BOT-BC56948
Equisetum arvense
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49463
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC56967
Equisetum arvense
John Thomas Howell
1960-8-22
36391
Shasta
Hat Lake
1950
Comment
CAS-BOT-BC57007
Equisetum arvense
John Thomas Howell
1977-6-21
52385
Plumas
Seneca
1097
Comment
CAS-BOT-BC57072
Equisetum arvense
John Thomas Howell
1950-7-24
26872
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC57952
Equisetum arvense
John Thomas Howell
1954-5-16
29651
El Dorado
Placerville.
563
Comment
CAS-BOT-BC57858
Equisetum hyemale subsp. affine
John Thomas Howell
1946-4-14
21610
Marin
Near Tomales.
Comment
CAS-BOT-BC57272
Equisetum laevigatum
John Thomas Howell
1958-5-28
33611
Inyo
Bishop Creek
1524
Comment
CAS-BOT-BC57397
Equisetum laevigatum
John Thomas Howell
1959-9-25
35003
Plumas
2 miles east of Portola
1484
Comment
CAS-BOT-BC57776
Equisetum laevigatum
John Thomas Howell; Gordon H. True
1970-6-25
46784
Tulare
E. branch of Salmon Creek, Big Meadow to Sirretta Meadows. Kern Plateau.
2590
Comment
CAS-BOT-BC57781
Equisetum laevigatum
John Thomas Howell
1962-5-22
37359
Tulare
Johnsondale.
1423
Comment
CAS-BOT-BC57484
Equisetum laevigatum
John Thomas Howell
1944-8-3
19865
Tuolumne
West side of Sonora Pass
2346
Comment
CAS-BOT-BC57546
Equisetum telmateia
John Thomas Howell
1946-4-14
21615
Marin
Near Tomales
Comment
CAS-BOT-BC213571
Eragrostis hypnoides
John Thomas Howell
1955-9-13
30913
Sonoma
Sand bar of Russian River at Odd Fellows Park above Guerneville.
Comment
CAS-BOT-BC204646
Eragrostis mexicana subsp. virescens
John Thomas Howell
1954-9-6
30095
Tuolumne
Between Tuttletown and Rawhide
Comment
CAS-BOT-BC213625
Eragrostis mexicana subsp. virescens
John Thomas Howell; G. H. True
1973-7-31
50145
Lassen
Susanville
1295
Comment
CAS-BOT-BC284062
Eragrostis pectinacea var. pectinacea
John Thomas Howell
1956-12-4
32012
Mariposa
Merced River at confluence of South Fork, Sierra Nevada
426
Comment
CAS-BOT-BC284195
Eragrostis pectinacea var. pectinacea
John Thomas Howell
1981-10-14
54625
Sutter
Oak Hill Ranch south side of Sutter Buttes
Comment
CAS-BOT-BC174092
Eremogone aculeata
John Thomas Howell
1925-6-28
1233
El Dorado
Near Velma Lakes on trail to Eagle Lake, Lake Tahoe region
Comment
CAS-BOT-BC174165
Eremogone aculeata
John Thomas Howell
1944-8-14
20474
Tuolumne
Tuolumne Canyon above Glen Aulin
Comment
UCR88855
Eremogone ferrisiae
J. T. Howell
1958-5-28
33535
Inyo
Sierra Nevada Mtns, Bishop Creek
1951
Comment
SEINET12875650
Eremogone ferrisiae
John Thomas Howell, Gordon H. True
1967-1
43097
Tulare
Near road bridge on South Fork of Kern River in Kennedy Meadows. Kern Plateau.
1890
Comment
CAS-BOT-BC160094
Eremothera boothii subsp. condensata
John Thomas Howell
1928-3-24
3503
San Diego
Near Palm Wash, w. Colorado Desert
Comment
CAS-BOT-BC514336
Eriastrum densifolium subsp. austromontanum
John Thomas Howell
1947-7-22
23479
San Bernardino
San Bernardino Mts. South Fork, Santa Ana River
2225
Comment
UC908106
Eriastrum eremicum subsp. eremicum
John Thomas Howell
1927-8-1
2890
San Bernardino
upper part of Morongo Valley Mojave(?) Desert (e end)
Comment
RSA0121583
Eriastrum sapphirinum subsp. dasyanthum
J. T. Howell
1928-7-9
1069
Riverside
San Juan Canyon Road, Elsinore Mts.
793
Comment
RSA0122054
Eriastrum sapphirinum subsp. dasyanthum
J. T. Howell
1928-6-30
1020
Ventura
Santa Susana Pass.
457
Comment
CAS-BOT-BC291258
Ericameria bloomeri
John Thomas Howell; Gordon H. True
1966-7-12
41837
Kern
Just east of Fay Creek Canyon, Kern Plateau
2194
Comment
GH387262
Ericameria bloomeri
J. T. Howell & G. H. True
1959-9-24
34956
Unknown
Near Cromberg
1249
Comment
CAS-BOT-BC286858
Ericameria discoidea
John Thomas Howell
1949-8-4
26016
Tulare
Ridge west of Siberian Pass
3352
Comment
CAS-BOT-BC286871
Ericameria discoidea
John Thomas Howell
1950-7-22
27186
Tulare
Olancha Peak
3291
Comment
CAS-BOT-BC298946
Ericameria nauseosa var. ceruminosa
John Thomas Howell
1967-11-5
44169
Kern
Kern River Canyon about 2.5 miles above Kernville
838
Comment
JEPS75275
Ericameria nauseosa var. ceruminosa
John Thomas Howell
1970-11-8
47543
Kern
near South Fork Kern River bridge on road from Weldon to Kernville (nw of Weldon); Sierra Nevada
792
Comment
JEPS75268
Ericameria nauseosa var. mohavensis
John Thomas Howell and Gordon H. True
1967-9-18
43745
Tulare
Chimney Meadow Sierra Nevada, The Kern Plateau
1889
Comment
CAS-BOT-BC294159
Ericameria nauseosa var. speciosa
John Thomas Howell
1950-8-29
27455
Inyo
Onion Valley road
2286
Comment
CAS-BOT-BC299462
Ericameria nauseosa var. speciosa
John Thomas Howell
1969-9-13
46100
Sierra
Little Truckee River near outlet of Webber Lake, Sierra Nevada
2042
Comment
GH417394
Ericameria paniculata
J. T. Howell
1927-11-26
3257
Unknown
San Felipe Wash
Comment
CAS-BOT-BC294452
Ericameria parryi var. aspera
John Thomas Howell
1938-8-10
14501
Mono
Near Crestview
Comment
CAS-BOT-BC293475
Erigeron algidus
John Thomas Howell
1940-8-1
15859
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC294594
Erigeron breweri var. breweri
John Thomas Howell
1958-8-2
34209
Fresno
Copper Creek Canyon trail
2133
Comment
CAS-BOT-BC297052
Erigeron breweri var. breweri
John Thomas Howell
1949-8-13
26272
Inyo
Little Cottonwood Creek
2926
Comment
CAS-BOT-BC299571
Erigeron breweri var. breweri
John Thomas Howell
1950-7-12
26687
Inyo
Sage Flat to Olancha Pass, Sierra Nevada
2133
Comment
CAS-BOT-BC294840
Erigeron breweri var. covillei
John Thomas Howell
1958-5-25
33377
Inyo
Carroll Creek
1676
Comment
CAS-BOT-BC295007
Erigeron compositus
John Thomas Howell
1946-7-26
22737
Inyo
Mono Mesa
3657
Comment
RSA39964
Erigeron compositus
J. T. Howell
1943-7-18
18539
Nevada
Castle Peak
Comment
CAS-BOT-BC300763
Erigeron glacialis var. glacialis
John Thomas Howell
1944-8-8
20166
Mariposa
High gap south of Elizabeth Lake
Comment
CAS-BOT-BC295718
Erigeron petrophilus var. petrophilus
John Thomas Howell
1923-11-12
249
Contra Costa
Mt. Diablo
Comment
CAS-BOT-BC295793
Erigeron petrophilus var. sierrensis
John Thomas Howell
1951-6-27
27625
Plumas
Jamison Creek
1828
Comment
CAS-BOT-BC300218
Erigeron pygmaeus
John Thomas Howell
1949-8-10
26203
Tulare
Soldier Lakes
3383
Comment
CAS-BOT-BC216103
Eriodictyon californicum
John Thomas Howell
1927-8-20
3030
Santa Clara
Near Big Basin, Santa Cruz Mts.
609
Comment
A402877
Eriodictyon tomentosum
J. T. Howell
1933-8-18
11565
Unknown
17 miles east of Jamesburg, Santa Lucia Mts.
Comment
CAS-BOT-BC255453
Eriogonum ampullaceum
John Thomas Howell
1950-7-27
27405
Mono
Slopes 2 1/2 miles north of Bridgeport
1965
Comment
CAS-BOT-BC248718
Eriogonum arborescens
John Thomas Howell
1928-5-19
3791
Ventura
Anacapa Island
Comment
UC517470
Eriogonum argillosum
John Thomas Howell
1933-4-23
11158
San Benito
11 mi on raod to San Benito Hernandez
Comment Read comments Jun 2 2016
UCD99761
Eriogonum baileyi
John Thomas Howell
1970-11-8
47528
Kern
east end of east arm of Lake Isabella.
792
Comment
CAS-BOT-BC248793
Eriogonum baileyi var. baileyi
John Thomas Howell
1950-8-29
27450
Inyo
Onion Valley road
2286
Comment
CAS-BOT-BC244028
Eriogonum baileyi var. baileyi
John Thomas Howell; Gordon H. True
1967-8-9
43619
Tulare
6 miles from Kennedy Meadows on road to Troy Meadow, Kern Plateau, Sierra Nevada
2286
Comment
CAS-BOT-BC241718
Eriogonum brachyanthum
John Thomas Howell
1933-6-29
11399
San Bernardino
Victorville
Comment
OBI11039
Eriogonum clavatum
John Thomas Howell
1948-6-14
24339
San Luis Obispo
Cholame Crk W of Shandon
Comment
CAS-BOT-BC256237
Eriogonum deflexum var. baratum
John Thomas Howell
1949-8-13
26293
Inyo
East slope of Wonoga Peak
2743
Comment
CAS-BOT-BC255724
Eriogonum eastwoodianum
John Thomas Howell
1963-6-22
39585
Fresno
Road to Parkfield 14 miles from Coalinga
Comment
CAS-BOT-BC246524
Eriogonum elatum var. elatum
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-13
54598
Mono
Old Sherwin Grade Road 0.75 mile south of Tom's Place
2048
Comment
CAS-BOT-BC246571
Eriogonum elegans
John Thomas Howell
1933-8-17
11537
San Benito
4 miles north of the Pinnacles
Comment
CAS-BOT-BC253170
Eriogonum elongatum var. elongatum
John Thomas Howell
1933-8-17
11529
San Benito
The Pinnacles
Comment
UCD100003
Eriogonum fasciculatum var. foliolosum
John Thomas Howell
1955-7-16
30657
Trinity
Trinity River Canyon, 2 miles east of Junction City.
487
Comment
CAS-BOT-BC250435
Eriogonum gracile
John Thomas Howell
1963-8-7
40102
Monterey
Western edge of Priest Valley on road to Coalinga
Comment
CAS-BOT-BC253515
Eriogonum gracile
John Thomas Howell
1933-8-17
11555
San Benito
Near Hernandez
Comment
CAS-BOT-BC252210
Eriogonum gracillimum
John Thomas Howell
1931-6-6
6674
Kern
Bakersfield
Comment
CAS-BOT-BC261235
Eriogonum hirtiflorum
John Thomas Howell
1960-6-7
35411
Fresno
Kings Canyon Road 6.5 mi. NE of Cherry Gap, Sierra Nevada
1554
Comment
POM273219B
Eriogonum hirtiflorum
J. T. Howell
1945-6-18
20993
Lake
Bottlerock Road
Comment
CAS-BOT-BC266020
Eriogonum latifolium
John Thomas Howell
1956-9-9
31864
San Francisco
SE end of Lake Merced, San Francisco
Comment
RSA766132
Eriogonum latifolium
J. T. Howell
1930-6-8
5257
Sonoma
1 mile east of Bodega Bay
Comment
CAS-BOT-BC259379
Eriogonum lobbii
John Thomas Howell
1944-8-14
20461
Tuolumne
Tuolumne Canyon above Glen Aulin
Comment
CAS-BOT-BC259370
Eriogonum lobbii
John Thomas Howell
1943-8-8
19175
Tehama
Anthony Peak, Tehama - Mendocino Co.
Comment
CAS-BOT-BC259406
Eriogonum luteolum
John Thomas Howell
1940-6-30
15591
Lake
Soda Bay
Comment
CAS-BOT-BC263100
Eriogonum maculatum
John Thomas Howell
1962-5-21
37179
Kern
Northeast of Lake Isabella
792
Comment
CAS-BOT-BC263109
Eriogonum maculatum
John Thomas Howell
1930-5-13
4963
Kern
Red Rock Canyon
Comment
CAS-BOT-BC263184
Eriogonum marifolium var. cupulatum
John Thomas Howell
1934-7-4
12395
Siskiyou
Se. corner of Siskiyou Co.
Comment
CAS-BOT-BC263298
Eriogonum marifolium var. marifolium
John Thomas Howell
1951-6-28
27693
Plumas
Eureka Peak
2133
Comment
CAS-BOT-BC268768
Eriogonum mohavense
John Thomas Howell
1930-5-13
4987
Kern
5 miles north of Ricardo
Comment
POM181017
Eriogonum nidularium
J. T. Howell
1928-6-14
3911
Inyo
Surprise Canyon, near Panamint City, Panamint Mountains.
Comment
CAS-BOT-BC268933
Eriogonum nudum var. auriculatum
John Thomas Howell
1939-9-10
15361
Marin
Stinson Beach
Comment
POM179710
Eriogonum nudum var. auriculatum
J. T. Howell
1930-7-4
5337
Contra Costa
Rocky hilltop in the north Berkeley Hills.
Comment
RSA66261
Eriogonum nudum var. auriculatum
J. T. Howell
1929-7-12
4346
Merced
Sandy flats above Merced River bottom, northwest of Hopeton Bridge
Comment
CAS-BOT-BC261507
Eriogonum nudum var. nudum
John Thomas Howell
1930-8-24
5448
Lake
4 miles from Middletown on Adams Springs Road
Comment
CAS-BOT-BC261543
Eriogonum nudum var. nudum
John Thomas Howell
1931-6-16
6712
Mendocino
10 miles s. of Laytonville
Comment
CAS-BOT-BC253121
Eriogonum nudum var. scapigerum
John Thomas Howell
1941-7-30
16512
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC258619
Eriogonum ovalifolium var. nivale
John Thomas Howell
1948-7-28
25112
Tulare
Center Basin
3657
Comment
CAS-BOT-BC258631
Eriogonum ovalifolium var. nivale
John Thomas Howell
1947-8-7
23861
Inyo
West of Sixth Lake, Big Pine Lakes
3413
Comment
CAS-BOT-BC265551
Eriogonum parishii
John Thomas Howell
1950-7-12
26705
Inyo
Sage Flat to Olancha Pass, Sierra Nevada
2743
Comment
CAS-BOT-BC257866
Eriogonum parvifolium
John Thomas Howell
1933-8-19
11594
Monterey
Carmel Valley, 4 miles e. of Carmel
Comment
UCD100852
Eriogonum pusillum
John Thomas Howell; Gordon H. True
1967-5-30
42451
Tulare
Kern Plateau, 15 miles from Lamont Meadow, on road to Long Valley.
1737
Comment
CAS-BOT-BC258332
Eriogonum rixfordii
John Thomas Howell
1928-6-20
4063 A
Inyo
Jail Canyon near the Burro Mine, Panamint Mts.
Comment
CAS-BOT-BC258499
Eriogonum roseum
John Thomas Howell
1970-9-25
47436
Kern
Kernville
807
Comment
CAS-BOT-BC267729
Eriogonum roseum
John Thomas Howell
1923-8-2
220
Mariposa
Wawona Meadow
1219
Comment
CAS-BOT-BC267758
Eriogonum roseum
John Thomas Howell
1927-11-13
3201
Los Angeles
1 1/2 miles east of Elizabeth Lake, Lieber Mts.
914
Comment
CAS-BOT-BC268396
Eriogonum roseum
John Thomas Howell
1933-8-13
11495
Santa Clara
Smith Creek, Mt. Hamilton
Comment
GH364481
Eriogonum siskiyouense
J. T. Howell
1937-7-29
13627
Unknown
Scott Mountain between Trinity and Siskiyou counties
Comment
CAS-BOT-BC268595
Eriogonum spergulinum var. pratense
John Thomas Howell
1949-7-30
25951
Tulare
Ramshaw Meadows
2682
Comment
CAS-BOT-BC272561
Eriogonum spergulinum var. reddingianum
John Thomas Howell
1963-7-12
39851
El Dorado
Meyers
1935
Comment
CAS-BOT-BC272631
Eriogonum spergulinum var. reddingianum
John Thomas Howell
1958-8-9
34250
Madera
Miller Meadow
2103
Comment
NY283068
Eriogonum spergulinum var. reddingianum
J. T. Howell
1934-6-14
12123
Modoc
Near Lost Lake, Warner Mountains
2438.4
Comment
UCD101251
Eriogonum spergulinum var. reddingianum
John Thomas Howell; Gordon H. True
1970-7-29
47066
Tulare
Kern Plateau; west side of Big Meadow at Salmon Creek.
2377
Comment
CAS-BOT-BC271872
Eriogonum spergulinum var. spergulinum
John Thomas Howell
1977-8-3
52520
Alpine
Just north of Ebbetts Pass
2682
Comment
CAS-BOT-BC271934
Eriogonum spergulinum var. spergulinum
John Thomas Howell; Gordon H. True
1970-7-29
47068
Tulare
West side of Big Meadow at Salmon Creek, Kern Plateau
2377
Comment
NY762353
Eriogonum strictum var. anserinum
J. T. Howell
1934-7-7
12478
Lassen
Harvey Valley
Comment
UC526210
Eriogonum truncatum
John Thomas Howell
1934-4-8
11816
Contra Costa
10 mi on Marsh Creek Road Clayton
Comment
CAS-BOT-BC267978
Eriogonum umbellatum var. argus
John Thomas Howell
1937-7-29
13629
Siskiyou
Scott Mt. between Trinity and Siskiyou cos.
Comment
CAS-BOT-BC267875
Eriogonum umbellatum var. bahiiforme
John Thomas Howell
1943-8-5
19083
Glenn
Plaskett Meadows
1828
Comment
RSA40220
Eriogonum umbellatum var. bahiiforme
J. T. Howell
1943-8-10
s.n.
Glenn
Black Butte
Comment
UCD101413
Eriogonum umbellatum var. bahiiforme
John Thomas Howell
1963-8-20
40142
Kern
Walker Pass.
1600
Comment
CAS-BOT-BC265089
Eriogonum umbellatum var. nevadense
John Thomas Howell
1946-7-14
22289
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
SEINET5331927
Eriogonum umbellatum var. nevadense
J. T. Howell
1963-8-22
40270
Mono
2.5 miles south of Crestview.
Comment
POM260788
Eriogonum umbellatum var. polyanthum
Thomas Howell
1940-6-13
8115
Modoc
[Unspecified]
Comment
CAS-BOT-BC264126
Eriogonum vimineum
John Thomas Howell; Gordon True; Walter Knight; Irja Knight
1967-7-10
2184
Plumas
Mouth of Butterfly, Butterfly Botanical Area and vicinity
883
Comment
CAS-BOT-BC262350
Eriogonum vimineum
John Thomas Howell
1955-8-24
30903
Contra Costa
Near summit of South Peak, Mt. Diablo
1158
Comment
POM261439
Eriogonum wrightii var. subscaposum
J. T. Howell
1940-8-10
16140
Fresno
Zumwalt Meadows, Kings River Canyon.
Comment
UCR89188
Eriophyllum ambiguum
J. T. Howell
1958-5-23
33200
Kern
Sierra Nevada Mtns, 10 mi east of Onyx.
1037
Comment
CAS-BOT-BC298364
Eriophyllum ambiguum var. ambiguum
John Thomas Howell
1983-4-19
54731
Kern
Kern River Preserve of The Nature Conservancy, South Fork Valley near Weldon
Comment
CAS-BOT-BC298417
Eriophyllum ambiguum var. paleaceum
John Thomas Howell
1928-6-14
3923
Inyo
Surprise Canon near Panamint City, Panamint Mts
2133
Comment
CAS-BOT-BC297328
Eriophyllum confertiflorum
John Thomas Howell
1927-6-1
2402
Orange
Southern Puente Hills at the Santa Ana Canon
152
Comment
CAS-BOT-BC300938
Eriophyllum jepsonii
John Thomas Howell
1937-5-20
12985
San Benito
10 miles east of Paicines
Comment
CAS-BOT-BC49556
Eriophyllum lanatum
John Thomas Howell
1934-6-11
11931
Modoc
Parker Creek, Warner Mountains
1584
Comment
CAS-BOT-BC49563
Eriophyllum lanatum
John Thomas Howell
1934-6-13
12103
Modoc
North fork of Barber Creek, Warner Mountains
1828
Comment
RSA97649
Eriophyllum lanatum var. achilleoides
J. T. Howell
1950-7-5
26636
Contra Costa
Brushy slope above Nortonville
Comment
CAS-BOT-BC301210
Eriophyllum lanatum var. arachnoideum
John Thomas Howell
1939-4-23
14602
Marin
Blythedale Canyon, Mill Valley
Comment
CAS-BOT-BC301464
Eriophyllum lanatum var. integrifolium
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-10
54434
Amador
On Carson Pass road just west of Carson Spur near Kirkwood
2407
Comment
CAS-BOT-BC301576
Eriophyllum lanatum var. integrifolium
John Thomas Howell
1943-7-18
18516
Nevada
Castle Peak
Comment
CAS-BOT-BC308464
Eriophyllum staechadifolium
John Thomas Howell
1956-9-9
31873
San Francisco
Lake Merced, San Francisco
Comment
UCR11860
Eryngium jepsonii
J. T. Howell
1933-9-17
11696
Solano
San Francisco Bay Region, Near Benicia
82
Comment
GH379445
Erysimum capitatum
J. T. Howell & G. H. True
1970-6-24
46669
Unknown
Big Meadow to North Manter Pass on trail to Manter Meadow, Kern Plateau
2438
Comment
CAS-BOT-BC40787
Erysimum capitatum
John Thomas Howell
1938-5-29
13873
Madera
4.5 miles from Coarse Gold on road to O'Neal's.
Comment
CAS-BOT-BC55125
Erysimum perenne
John Thomas Howell
1942-7-25
17158
Tulare
Eagle Lake Trail near Mineral King.
Comment
UC1042408
Erythronium purpurascens
John Thomas Howell
1951-6-28
27684
Plumas
Eureka Peak
1981
Comment
CAS-BOT-BC110546
Eschscholzia
John Thomas Howell; R. C. Barneby
1954-5-9
29294
Fresno
Sierra Nevada. 2 miles west of Miramonte.
853
Comment
CAS-BOT-BC403331
Eschscholzia californica
John Thomas Howell
1963-6-22
39570
Monterey
Priest Valley
685
Comment
RSA312
Eschscholzia californica var. peninsularis
J. T. Howell
1927-6-22
194
Orange
Botany Garden, Rancho Santa Ana.
Comment
UC473567
Eschscholzia hypecoides
John Thomas Howell
1931-3-23
5998
Monterey
Poncho Rico Canyon
Comment
CAS-BOT-BC310451
Eucephalus ledophyllus var. covillei
John Thomas Howell
1943-8-10
19245
Glenn
Black Butte
Comment
UCD142416
Euphorbia oblongata
John Thomas Howell
1974-4-25
50327
Marin
Ross. Along Lagunitas Road.
Comment
CAS-BOT-BC202456
Euphorbia ocellata
John Thomas Howell
1973-11-2
50307
Kern
About 5 mile east of Maricopa
Comment
CAS-BOT-BC312156
Eurybia integrifolia
John Thomas Howell
1943-7-21
18687
Nevada
West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC310542
Eurybia integrifolia
John Thomas Howell
1960-7-21
35794
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC312255
Euthamia occidentalis
John Thomas Howell
1930-10-25
5673
Monterey
Arroyo Seco River, Santa Lucia Mts.
Comment
CAS-BOT-BC278263
Festuca brachyphylla subsp. breviculmis
John Thomas Howell
1948-7-28
25142
Tulare
North side of Junction Pass
3962
Comment
SBBG41107
Festuca bromoides
J. T. Howell
1963-5-18
Monterey
2.5 mi S of Aromas
60
Comment
CAS-BOT-BC278323
Festuca californica subsp. californica
John Thomas Howell
1943-5-15
18086
Marin
Tiburon Peninsula
Comment
CAS-BOT-BC247717
Festuca idahoensis
John Thomas Howell
1934-7-3
12376
Modoc
5 mi. S of Hackamore.
Comment
CAS-BOT-BC278435
Festuca idahoensis
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49459
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC278460
Festuca idahoensis
John Thomas Howell
1934-6-14
12168
Lassen
Near Lost Lake, Warner Mts.
2438
Comment
CAS-BOT-BC278986
Festuca rubra
John Thomas Howell
1939-6-18
14780
Marin
Near Mud Lake
Comment
RSA300180
Festuca rubra
J. T. Howell, Gordon H. True
1969-6-23
45841
Plumas
Quincy.
1037
Comment
CAS-BOT-BC279027
Festuca rubra
John Thomas Howell
1960-7-23
35933
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC278591
Festuca saximontana
John Thomas Howell
1942-7-31
17471
Tulare
Mt. Kaweah
Comment
CAS-BOT-BC278618
Festuca subulata
John Thomas Howell
1958-7-23
33839
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC282569
Festuca viridula
John Thomas Howell
1951-6-28
27702
Plumas
Eureka Peak
2255
Comment
CAS-BOT-BC77675
Ficus carica
John Thomas Howell
1961-11-1
37074
Alameda
Lakeside Park, Oakland
Comment
CAS-BOT-BC459436
Fragaria virginiana subsp. platypetala
John Thomas Howell
1946-7-14
22339
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC459340
Fragaria virginiana var. platypetala
John Thomas Howell
1950-7-17
27002
Tulare
Trail from Bakeoven to Templeton Meadows
2682
Comment
CAS-BOT-BC53445
Frangula californica subsp. tomentella
John Thomas Howell
1954-5-17
29704
El Dorado
1 mile southwest of Garden Valley
609
Comment
CAS-BOT-BC59558
Frangula rubra subsp. rubra
John Thomas Howell
1953-5-25
29042
Tuolumne
Twain Harte
1127
Comment
CAS-BOT-BC223682
Frankenia salina
John Thomas Howell
1928-5-19
3814
Ventura
Anacapa Island
Comment
CAS-BOT-BC223441
Fraxinus dipetala
John Thomas Howell
1963-6-22
39564
Monterey
Priest Valley
685
Comment
CAS-BOT-BC212421
Fremontodendron californicum
John Thomas Howell; Gordon H. True
1966-7-13
41869
Tulare
Brush Creek Canyon grade on Cherry Hill Road, Sierra Nevada
1645
Comment
CAS-BOT-BC130177
Fritillaria affinis
John Thomas Howell
1924-3-22
289
Sonoma
Camp Meeker
Comment
CAS-BOT-BC130008
Fritillaria affinis
John Thomas Howell
1926-3-21
1719
Lake
St. Helena Creek below Patten's
609
Comment
JEPS44807
Galium angustifolium subsp. onycense
John Thomas Howell and Gordon H. True
1966-7-12
41811
Kern
rim of plateau just e Fay Creek Canyon; Sierra Nevada, Kern Plateau
2194
Comment
GH385871
Galium bolanderi
J. T. Howell
1931-4-3
6135
Unknown
Pope Creek Canyon, 8.5 miles from Monticello, Napa Range
Comment
CDA6658
Galium divaricatum
J. T. Howell
1943-6-19
18237
Napa
Hills west of Napa Valley between St. Helena and Mt. St. John
Comment
RSA39976
Galium grayanum var. grayanum
J. T. Howell
1943-7-26
18840
Placer
Mt. Lincoln.
Comment
CAS-BOT-BC217572
Galium hypotrichium subsp. subalpinum
John Thomas Howell
1947-8-11
24011
Inyo
South end of Coyote Ridge
3657
Comment
CAS-BOT-BC223179
Galium nuttallii subsp. insulare
John Thomas Howell
1931-4-14
6376
Santa Barbara
China Harbor, Santa Cruz Island
Comment
CAS-BOT-BC303498
Gamochaeta ustulata
John Thomas Howell; Catherine Best; Gordon H. True
1982-5-6
54696
Sonoma
Bouverie Audubon Preserve, about 1.5 miles E of Glen Ellen near Stuart Creek
137
Comment
CAS-BOT-BC199055
Garrya congdonii
John Thomas Howell
1939-5-7
14652
Napa
On Lower Lake-Knoxville Road at Lake Co. line.
Comment
CAS-BOT-BC194533
Garrya elliptica
John Thomas Howell
1944-4-13
19380
Marin
Big Rock Ridge west of Hamilton Field
Comment
A401775
Garrya flavescens subsp. congdonii
J. T. Howell
1939-5-7
14652
Unknown
On Lower Lake-Knoxville road at Lake Co. line
Comment
A401899
Garrya fremontii
J. T. Howell
1942-9-6
17864
Unknown
Northside Trail, Mt. Tamalpais
Comment
CAS-BOT-BC169857
Garrya fremontii
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-26
54373
Plumas
0.75 miles northeast of Bucks Summit on road to Quincy
1600
Comment
CAS-BOT-BC282606
Gastridium phleoides
John Thomas Howell
1962-6-16
37592
Butte
3.5 mi. n. of Pentz, Sierra Nevada
396
Comment
CAS-BOT-BC478521
Gayophytum
John Thomas Howell
1958-8-2
34200
Fresno
Copper Creek Canyon trail
2286
Comment
CAS-BOT-BC478867
Gayophytum
John Thomas Howell; Gordon H. True
1967-7-3
42864
Tulare
Rockhouse Meadow
1706
Comment
RSA512821
Gayophytum eriospermum
J. T. Howell
1962-7-8
38260
Kern
Black Mountain, south side. Greenhorn Mountains.
1433
Comment
SD130495
Gayophytum heterozygum
John Thomas Howell
1978-7-29
53350
Nevada
Disturbed ground along roadside, 5 miles north of Truckee on road to Sierraville.
Comment
UCD105708
Genista
John Thomas Howell
1956-4-22
31275
San Francisco
At base of north cliffs of Telegraph Hill.
Comment
UC904957
Gentiana newberryi
John Thomas Howell
1949-7-19
25515
Tulare
Rock Creek Sierra Nevada
3200
Comment
RSA0029463
Geranium potentilloides
J. T. Howell
1969-4-20
45514
Marin
Meadow Trail to Mt. Wittenberg, Pt. Reyes National Seashore.
Comment
UCD103469
Geranium potentilloides
John Thomas Howell
1946-6-16
s.n.
Marin
Inverness Park.
Comment
RSA120472
Gilia achilleifolia subsp. multicaulis
J. T. Howell
1957-5-19
32328
Stanislaus
Mount Oso
1006
Comment
CAS-BOT-BC226208
Gilia interior
John Thomas Howell
1976-5-18
51738
Kern
2.3 mi. from Alta Sierra. Along old road from Alta Sierra to Wofford Heights, Greenhorn Mountains
Comment
CAS-BOT-BC402088
Gilia ochroleuca subsp. bizonata
John Thomas Howell
1962-5-21
37189
Kern
Northeast of Lake Isabella
792
Comment
CAS-BOT-BC407835
Gilia ochroleuca subsp. ochroleuca
John Thomas Howell; Gordon H. True
1967-5-30
42479
Tulare
Sierra Nevada, Kern Plateau, about midway between Lamont Meadow and Long Valley
1554
Comment
CAS-BOT-BC283876
Glyceria borealis
John Thomas Howell; Gordon H. True
1968-6-10
44558
Plumas
Quincy. Spanish Creek at Gansner Grove
1036
Comment
CAS-BOT-BC282706
Glyceria elata
John Thomas Howell
1951-6-28
27647
Plumas
Johnsville, Sierra Nevada
1584
Comment
CAS-BOT-BC282711
Glyceria elata
John Thomas Howell
1960-7-20
35721
Plumas
Drakesbad, Lassen Volcanic National Park
1828
Comment
RSA32496
Gnaphalium beneolens
J. T. Howell
1945-9-2
21455
Marin
San Rafael Hills
Comment
UC710549
Gnaphalium palustre
John Thomas Howell
1943-7-19
18583
Placer
Summit Valley
Comment
CAS-BOT-BC303899
Gnaphalium palustre
John Thomas Howell
1925-5-10
1041 A
Merced
Merced River bottom between Snelling and Hopeton
Comment
CAS-BOT-BC304437
Grindelia hirsutula
John Thomas Howell
1939-9-3
15330
Marin
Corte Madera
Comment
CAS-BOT-BC304473
Grindelia hirsutula
J. T. Howell
1933-7-23
s.n.
Marin
Sausalito Hills
Comment
CAS-BOT-BC304488
Grindelia hirsutula
John Thomas Howell
1933-10-8
11701
Marin
Pt. Reyes Peninsula
Comment
CAS-BOT-BC304889
Grindelia hirsutula
John Thomas Howell
1932-10-8
10804
Napa
Cuttings Wharf on Napa River
Comment
CAS-BOT-BC304929
Grindelia hirsutula
John Thomas Howell
1959-9-21
34826
Plumas
Greenville
1088
Comment
CAS-BOT-BC305003
Grindelia hirsutula
John Thomas Howell
1931-10-11
8133
Mariposa
Mariposa
Comment
CAS-BOT-BC305051
Grindelia hirsutula
John Thomas Howell
1933-9-15
11656
San Francisco
Laguna Honda, San Francisco
Comment
CAS-BOT-BC305138
Grindelia hirsutula
J. T. Howell
1930-5-19
5179
Santa Barbara
Summerland
Comment
CAS-BOT-BC314672
Grindelia hirsutula
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-22
54072
Yuba
1.4 miles southwest of Bullards Bar Dam, on road to Challenge
609
Comment
CAS-BOT-BC305224
Grindelia hirsutula
John Thomas Howell
1930-9-28
5495
Contra Costa
Liberty School on Marsh Creek Road
Comment
CAS-BOT-BC305229
Grindelia hirsutula
John Thomas Howell
1929-7-7
4322
Contra Costa
2 miles s. of Rodeo
Comment
CAS-BOT-BC314626
Grindelia hirsutula
John Thomas Howell
1934-6-16
12224
Shasta
3.5 miles NE of McArthur
Comment
CAS-BOT-BC123707
Grindelia hirsutula var. hirsutula
John Thomas Howell
1930-7-13
5338
Sonoma
Black Point Road
Comment
CAS-BOT-BC304683
Grindelia squarrosa
John Thomas Howell
1974-9-20
50907
Plumas
Chilcoot
1554
Comment
GH417724
Grindelia stricta var. angustifolia
J. T. Howell
1933-7-30
11482
Unknown
Inverness
Comment
GH417698
Grindelia stricta var. platyphylla
J. T. Howell
1932-10-19
10862
Unknown
mouth of Waddell Creek
Comment
UC1106257
Guillenia lasiophylla
John Thomas Howell
1943-4-11
17904
Marin
Black Canyon, San Rafael hills San Rafael
Comment
CAS-BOT-BC304647
Gutierrezia californica
John Thomas Howell
1931-9-6
8042
San Benito
7 miles south of Paicines
Comment
UCD132609
Gutierrezia californica
John Thomas Howell
1967-9-30
44017
Marin
west side of Angel Island.
Comment
LA203632
Gutierrezia sarothrae
John Thomas Howell;
1927-7-22
2816
Orange
Santa Ana Canyon
Comment
CAS-BOT-BC182435
Hackelia
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54279
Plumas
About 1.3 mi. southeast of summit of Mt. Hough on road to Quincy
2042
Comment
CAS-BOT-BC282877
Hainardia cylindrica
John Thomas Howell
1940-6-20
s.n.
Marin
Muir Beach to Stinson Beach
Comment
CDA3145
Halogeton glomeratus
J. T. Howell, T. H. Kearney
1951-8-2
28229
Lassen
Honey Lake Valley near Herlong.
Comment
JEPS58984
Hazardia whitneyi var. whitneyi
John Thomas Howell
1962-9-23
38811
Kern
near Tiger Flat; Sierra Nevada, Greenhorn Mountains
1981
Comment
CAS-BOT-BC305313
Helianthella
John Thomas Howell
1961-6-21
36657
Plumas
Greenville
1097
Comment
CAS-BOT-BC314768
Helianthella californica var. nevadensis
John Thomas Howell
1924-6-5
378
Mariposa
Wawona
1219
Comment
CAS-BOT-BC224042
Helianthemum scoparium
John Thomas Howell
1965-6-15
41341
Monterey
Near the Monterey Airport on Salinas road about 4 miles east of Monterey
Comment
CAS-BOT-BC305398
Helianthus annuus
John Thomas Howell
1973-11-1
50298
Kern
Bank of Kern River, Hart Memorial Park near Bakersfield
146
Comment
UCD132802
Helianthus annuus
John Thomas Howell
1967-11-3
44055
Tulare
in irrigated part at NE corner, about 4.5 miles ENE of Pixley.
83
Comment
RSA215917
Helianthus annuus subsp. lenticularis
J. T. Howell
1957-9-22
32969
San Francisco
In waste ground, north base of Telegraph Hill, San Francscio.
Comment
POM179723
Hemizonia congesta
J. T. Howell
1930-6-8
5216
Sonoma
8 miles west of Petaluma on Bodega Road.
Comment
CAS-BOT-BC309633
Hemizonia congesta subsp. lutescens
John Thomas Howell
1966-4-6
41466
Marin
John Thomas Howell Botanical Garden, Tiburon
Comment
CAS-BOT-BC309834
Hemizonia congesta subsp. luzulifolia
John Thomas Howell
1926-11-28
1576
Napa
American Canon [Canyon] between Napa highway and Cordelia
Comment
RSA22084
Hemizonia corymbosa subsp. corymbosa
J. T. Howell
1939-9-3
15336
Marin
Near Black Point.
Comment
RSA137096
Hemizonia luzulifolia
J. T. Howell
1955-8-24
30900
Contra Costa
Near Diablo County Club, south base of Mt. Diablo.
Comment
GH414562
Hemizonia plumosa
J. T. Howell
1932-10-16
10839
Unknown
1.5 miles west of Tesla
Comment
CAS-BOT-BC388476
Herniaria
John Thomas Howell; R. C. Barneby
1954-5-10
29335
Fresno
Grade above Tollhouse
792
Comment
CAS-BOT-BC388491
Herniaria hirsuta var. cinerea
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52810
Calaveras
Camp Nine Road northeast of Vallecito
609
Comment
CAS-BOT-BC310164
Hesperevax caulescens
John Thomas Howell
1929-4-25
4191
Merced
5 miles ne. of Merced
Comment
CAS-BOT-BC310198
Hesperevax sparsiflora var. sparsiflora
John Thomas Howell
1963-5-6
39129
Monterey
Santa Lucia Mountains. 3 miles n. of Jolon
335
Comment
CAS-BOT-BC403805
Hesperocnide tenella
John Thomas Howell
1957-4-30
32148
San Benito
Near entrance to the Pinnacles
289
Comment
RSA54067
Hesperocnide tenella
J. T. Howell
1949-7-4
25355
Santa Cruz
Near Felton.
Comment
CAS-BOT-BC179184
Hesperolinon micranthum
John Thomas Howell
1934-6-30
12258
Modoc
Duncan Horse Camp.
1355
Comment
POM273120
Hesperostipa comata subsp. comata
J. T. Howell
1945-7-22
21330
Marin
Clay slope and flat W of Mill Valley on road to Muir Woods
Comment
CAS-BOT-BC148449
Heteromeles arbutifolia
John Thomas Howell
1957-5-28
32524
San Francisco
Nw. side of Lone Mt. - San Francisco
Comment
CAS-BOT-BC310255
Heterotheca
John Thomas Howell
1962-7-9
38361
Kern
Kern River bottom just below Isabella Dam
762
Comment
CAS-BOT-BC318883
Heterotheca grandiflora
John Thomas Howell
1925-5-17
1064
Merced
Hopeton Bridge on the Merced River
Comment
CAS-BOT-BC311053
Heterotheca oregona var. oregona
John Thomas Howell
1936-8-29
12889
Humboldt
Bluffs of Eel River, 11 miles n. of Garberville
Comment
CAS-BOT-BC311172
Heterotheca sessiliflora subsp. bolanderi
John Thomas Howell
1939-7-2
14831
Marin
Ridge between Tennessee Cove and Pirates Cove
Comment
CAS-BOT-BC311273
Heterotheca sessiliflora subsp. echioides
John Thomas Howell
1933-8-17
11534
San Benito
The Pinnacles
Comment
CAS-BOT-BC318975
Heterotheca sessiliflora var. echioides
John Thomas Howell
1927-8-18
3013
Monterey
Arroyo Seco River, Santa Lucia Camp, Santa Lucia Mountains
609
Comment
CAS-BOT-BC310932
Heterotheca villosa var. minor
John Thomas Howell
1960-3-26
35205
Kern
Kern Canyon 3 miles south of Democrat Hot Springs
Comment
CAS-BOT-BC424374
Heuchera rubescens
John Thomas Howell
1969-8-27
45996
Tulare
Near Mineral King in Glacial Valley below White Chief Mine
2895
Comment
CAS-BOT-BC425329
Heuchera rubescens
John Thomas Howell
1940-8-4
15963
Tulare
East Lake
2926
Comment
CAS-BOT-BC319620
Hieracium albiflorum
John Thomas Howell
1960-7-19
35709
Plumas
Drakesbad, Lassen Volcanic National Park
1828
Comment
CAS-BOT-BC280711
Holcus lanatus
John Thomas Howell
1962-6-15
37483
Butte
Magalia
731
Comment
UC1598596
Holocarpha heermannii
John Thomas Howell
1955-8-24
30901
Contra Costa
near Diablo Country Club (s base of Mt. Diablo); Mt. Diablo
Comment
UC473573
Holocarpha heermannii
John Thomas Howell
1931-10-11
8128
Mariposa
Mariposa
Comment
CAS-BOT-BC325832
Holocarpha heermannii
John Thomas Howell
1930-9-28
5499
Contra Costa
6.3 miles from Byron on teh Marsh Creek Road
Comment
CAS-BOT-BC324651
Holocarpha virgata
John Thomas Howell
1933-8-27
11644
Napa
EAst of Chiles Valley on road to Winters, Napa Range
Comment
CAS-BOT-BC324647
Holocarpha virgata
John Thomas Howell
1929-7-21
4332
Merced
Oakdale Road, 8 miles from Merced
Comment
CAS-BOT-BC149933
Holodiscus discolor var. discolor
John Thomas Howell; Gordon H. True
1966-7-12
41816
Kern
Just east of Fay Creek Canyon, Kern Plateau
2194
Comment
CAS-BOT-BC149961
Holodiscus discolor var. discolor
John Thomas Howell
1941-7-30
16503
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC152384
Holodiscus discolor var. discolor
John Thomas Howell
1939-8-6
15106
Siskiyou
Elk Mt., Marble Mts.
Comment
CAS-BOT-BC284605
Hordeum brachyantherum subsp. brachyantherum
John Thomas Howell
1944-5-28
s.n.
Marin
Almonte
Comment
CAS-BOT-BC284650
Hordeum brachyantherum subsp. brachyantherum
John Thomas Howell
1961-6-21
36694
Plumas
Greenville
1097
Comment
CAS-BOT-BC284666
Hordeum brachyantherum subsp. brachyantherum
John Thomas Howell
1956-6-5
31492
San Francisco
North slope of Bayview Hills, San Francisco
Comment
CAS-BOT-BC285050
Hordeum depressum
John Thomas Howell
1948-4-26
24278
Tulare
Near Earlimart
Comment
UCR168504
Hordeum depressum
J. T. Howell
1948-4-26
24278
Tulare
Near Earlimart
88
Comment
CAS-BOT-BC284697
Hordeum jubatum
John Thomas Howell
1934-7-1
12348
Modoc
Duncan Horse Camp
Comment
CAS-BOT-BC284728
Hordeum jubatum
John Thomas Howell
1977-8-11
52697
Plumas
At north end of Frenchmans Reservoir
1706
Comment
CAS-BOT-BC289586
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1963-5-6
39193
Monterey
Near Jolon, Santa Lucia Mts.
Comment
CAS-BOT-BC289385
Hordeum murinum subsp. glaucum
John Thomas Howell
1956-5-19
21416 A
San Francisco
Third and Army Streets, San Francisco
Comment
RSA118033
Hordeum murinum subsp. glaucum
J. T. Howell
1955-5-20
30211
Monterey
Soledad
Comment
CAS-BOT-BC282031
Hordeum murinum subsp. leporinum
John Thomas Howell
1932-3-13
8218
Ventura
San Nicolas Island
Comment
CAS-BOT-BC273498
Hordeum vulgare
John Thomas Howell
1949-7-16
25359
Tuolumne
Dardanelle, Middle Fork Stanislaus River
Comment
CAS-BOT-BC536640
Horkelia californica
John Thomas Howell
1930-6-22
5323
Marin
Rodeo Lagoon
Comment
JEPS40662
Horkelia fusca subsp. tenella
John Thomas Howell
1926-7-26
2128
Plumas
near Prattville; Potentilla
1371
Comment
CAS-BOT-BC143993
Horkelia fusca var. tenella
John Thomas Howell
1926-7-26
2128
Plumas
Near Prattville
1371
Comment
CAS-BOT-BC158963
Horkeliella purpurascens
John Thomas Howell; Gordon H. True
1969-9-29
46280
Tulare
Upper Dry Lake, east of north end of Long Meadow - Kern Plateau, Sierra Nevada
2392
Comment
CAS-BOT-BC201034
Hosackia crassifolia
John Thomas Howell
1923-7-9
113
Mariposa
Near Stella Lake, Wawona
1219
Comment
CAS-BOT-BC201146
Hosackia crassifolia
John Thomas Howell
1942-7-26
17218
Tulare
Mineral King
Comment
CAS-BOT-BC312542
Hulsea heterochroma
John Thomas Howell
1955-7-7
30521
Monterey
Pinyon Peak, Santa Lucia Mts.
Comment
RSA526
Hydrocotyle umbellata
J. T. Howell
1927-8-13
624
Orange
Santa Ana River Bottom
152
Comment
POM203152
Hydrocotyle verticillata
J. T. Howell
1933-10-8
11712
Marin
Pt. Reyes Peninsula
Comment
UCD128241
Hydrocotyle verticillata
John Thomas Howell
1946-8-23
22898
Marin
Olema Marshes.
Comment
CAS-BOT-BC312637
Hymenopappus filifolius var. lugens
John Thomas Howell
1927-7-10
2740
San Bernardino
East end of Big Bear Lake, San Bernardino Mts.
2042
Comment
CAS-BOT-BC312821
Hymenoxys hoopesii
John Thomas Howell; Gordon H. True
1970-6-23
46656
Tulare
NE end of Big Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC401302
Hypericum scouleri
John Thomas Howell
1943-8-5
19069
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC312932
Hypochaeris glabra
John Thomas Howell; Gordon H. True
1967-6-13
42592
Butte
Oroville
51
Comment
CAS-BOT-BC135726
Iris hartwegii
John Thomas Howell
1962-6-17
37680
Plumas
Butterfly Valley - Sierra Nevada
1036
Comment
RSA684562
Isoetes bolanderi
J. T. Howell
1947-8-6
23827
Inyo
Fourth Lake, Big Pine Lakes
3293
Comment
CAS-BOT-BC69932
Isoetes howellii
John Thomas Howell; R. C. Barneby
1954-5-13
29527
Amador
Plymouth.
274
Comment
CAS-BOT-BC112393
Isolepis carinata
John Thomas Howell
1927-5-8
2369
Marin
Low place in grassland north of Lake Lagunitas
Comment
POM196451
Isolepis carinata
J. T. Howell
1927-5-8
2369
Marin
North of Lake Lagunitas.
Comment
RSA93
Isolepis cernua
J. T. Howell
1927-7-6
277
Orange
Santa Ana River bottom, Rancho Santa Ana
152
Comment
JEPS42713
Isomeris arborea
John Thomas Howell
1927-10-8
3134
Ventura
Pt. Mugu
Comment
CAS-BOT-BC324804
Iva axillaris
John Thomas Howell
1957-4-30
32116
Monterey
San Lorenzo Creek 4.5 miles from King City
121
Comment
CAS-BOT-BC137457
Ivesia campestris
John Thomas Howell
1949-7-19
25496
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC139792
Ivesia gordonii
John Thomas Howell
1943-7-20
18616
Nevada
Castle Peak
Comment
NY833900
Ivesia kingii
J. T. Howell
1938-8-8
14380
Mono
Long Valley
Comment
UC618375
Ivesia lycopodioides subsp. lycopodioides
John Thomas Howell
1938-8-11
14533
Tuolumne
Mt. Dana
3352
Comment
CAS-BOT-BC324889
Jensia yosemitana
John Thomas Howell; R. C. Barneby
1954-5-10
29356
Fresno
Near Alder Springs, Sierra Nevada
1402
Comment
UC1106290
Juncus bufonius var. occidentalis
John Thomas Howell
1941-7-6
16355
Marin
Kent Trail Mt. Tamalpais
Comment
UC710546
Juncus drummondii
John Thomas Howell
1944-8-6
20044
Tuolumne
Dry Lake
Comment
CAS-BOT-BC127608
Juncus mertensianus
John Thomas Howell
1940-8-4
15977
Tulare
Ouzel Basin.
3200
Comment
RSA38321
Juncus mexicanus
J. T. Howell
1948-7-21
24808
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows.
2896
Comment
UC710586
Juncus nevadensis
John Thomas Howell
1944-8-14
20489
Tuolumne
above Glen Aulin; Tuolumne Canyon
Comment
UCD142921
Juncus tenuis
John Thomas Howell; Gordon H. True
1971-7-1
48322
Placer
North limits of Lincoln.
48
Comment
RSA95512
Juncus tenuis
J. T. Howell
1951-6-27
27618
Plumas
Jamison Creek
1829
Comment
CAS-BOT-BC80973
Juniperus californica
John Thomas Howell
1970-9-24
47382
Kern
0.5 mile s. of summit of Bodfish-Havilah road
1097
Comment
CAS-BOT-BC85433
Juniperus californica
John Thomas Howell
1970-9-25
47454
Kern
Sierra Nevada - rock hillside about 2 miles south of Kernville
792
Comment
UCD133674
Juniperus californica
John Thomas Howell
1960-3-25
35163
Kern
West side of Walker Pass.
1432
Comment
CAS-BOT-BC81267
Juniperus occidentalis var. australis
John Thomas Howell
1958-8-16
34473
Madera
Near Isberg Lake
2987
Comment
A362727
Kalmia microphylla
J. T. Howell
1937-7-24
13410
Unknown
Caribou Basin, Salmon-Trinity Alps
1981
Comment
CAS-BOT-BC235777
Keckiella cordifolia
John Thomas Howell
1927-6-5
2428
San Bernardino
Aliso Canyon, s. Puente Hills
213
Comment
CAS-BOT-BC236906
Keckiella corymbosa
John Thomas Howell
1937-7-31
13704
Trinity
11 miles west of Big Bar
Comment
NY790281
Keckiella corymbosa
J. T. Howell
1937-7-31
13704
Trinity
Trinity River Canyon, 11 miles west of Big Bar
Comment
CAS-BOT-BC237849
Keckiella lemmonii
John Thomas Howell
1929-8-4
4356
Napa
One mile below Samuels Springs, Pope Creek Canon [Canyon], Napa Range
Comment
CAS-BOT-BC246164
Keckiella lemmonii
John Thomas Howell
1976-7-14
51821
Plumas
Feather River Canyon Highway at Injun Jim Campground, Sierra Nevada
609
Comment
CAS-BOT-BC238255
Keckiella rothrockii
John Thomas Howell
1948-7-31
25267
Inyo
Onion Valley road
2590
Comment
CAS-BOT-BC238284
Keckiella rothrockii
John Thomas Howell
1950-7-17
26990
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
JEPS12486
Kelloggia galioides
John Thomas Howell
1925-6-29
1258
El Dorado
Emerald Bay Lake Tahoe (Armstrong's)
1889
Comment
UCD85818
Koeleria macrantha
John Thomas Howell; Gordon H. True
1971-7-14
48449
Tulare
Kern Plateau. Manter Meadow.
2164
Comment
UC1177282
Lactuca serriola
John Thomas Howell
1939-11-5
Marin
Manzanita
Comment
CAS-BOT-BC341499
Lagophylla ramosissima
John Thomas Howell
1944-6-25
19656
Marin
Santa Venetia
Comment
CAS-BOT-BC341714
Lagophylla ramosissima
John Thomas Howell
1957-5-19
32330
Stanislaus
Mt. Oso
1005
Comment
CAS-BOT-BC347080
Lasthenia californica
John Thomas Howell
1926-4-18
1894
Santa Clara
Almaden Ridge
Comment
GH427305
Lasthenia macrantha subsp. bakeri
J. T. Howell
1931-9-27
8099
Unknown
6 miles south of Point Arena
Comment
POM203867
Lasthenia macrantha subsp. bakeri
J. T. Howell
1931-9-27
8099
Mendocino
6 miles south of Point Arena
Comment
CAS-BOT-BC366967
Lasthenia minor
John Thomas Howell
1930-4-20
4733
Marin
Pt Reyes
Comment
UCD106231
Lathyrus hirsutus
John Thomas Howell
1966-6-2
41552
Napa
Dry Creek Road near head of Dry Creek south west of Oakville.
Comment
CAS-BOT-BC204997
Lathyrus jepsonii var. californicus
John Thomas Howell
1937-7-27
13593
Trinity
Coffee Creek Canyon near Battle Creek
Comment
CAS-BOT-BC323210
Layia chrysanthemoides
John Thomas Howell
1931-4-5
6181
Solano
Blue Rock Springs near Vallejo
Comment
CAS-BOT-BC321793
Layia gaillardioides
John Thomas Howell
1942-5-17
16960
Marin
Ridge above the cascades of San Anselmo Creek
Comment
CAS-BOT-BC321464
Layia glandulosa
John Thomas Howell; Gordon H. True
1969-5-13
45681
Kern
Sierra Nevada. Spanish Needle Creek Road to Lamont Meadow
1463
Comment
CAS-BOT-BC321087
Layia glandulosa
John Thomas Howell
1958-5-23
33311
Inyo
Whitney Portal road
1981
Comment
CAS-BOT-BC321147
Layia glandulosa
J. T. Howell; Gordon True
1971-6-16
s.n.
Kern
5 mi E of Claraville
Comment
CAS-BOT-BC328231
Layia heterotricha
John Thomas Howell
1931-3-18
5842
Fresno
Oil Canyon
Comment
CAS-BOT-BC327177
Layia hieracioides
John Thomas Howell
1957-6-2
32551
Monterey
Near top of Jolon Grade
Comment
RSA896
Layia platyglossa subsp. campestris
J. T. Howell
1928-2-25
844
Orange
Between Nolina and Bee Canyon, Rancho Santa Ana.
152
Comment
CAS-BOT-BC329303
Layia septentrionalis
John Thomas Howell
1940-5-19
15458
Napa
Upper St. Helena Creek
Comment
UCD63584
Leersia oryzoides
John Thomas Howell
1974-9-19
50873
Sutter
1.7 mi. south of Robbins on road to Knights Landing.
7
Comment
CAS-BOT-BC534877
Lemna valdiviana
J. T. Howell
1943-6-13
s.n.
Marin
Sausalito
Comment
CAS-BOT-BC221602
Lepechinia cardiophylla
John Thomas Howell
1927-6-26
2606
Orange
Claymine Canon [Canyon] n. Santa Ana Mts.
609
Comment
RSA1076
Lepechinia cardiophylla
J. T. Howell
1927-6-26
225
Orange
Claymine Canyon, near Sierra Peak
610
Comment
CAS-BOT-BC88989
Lepidium dictyotum
John Thomas Howell
1962-7-9
38349 A
Kern
Sierra Nevada. Isabella.
762
Comment
CAS-BOT-BC89085
Lepidium didymum
John Thomas Howell
1939-11-5
s.n.
Marin
Sausalito.
Comment
CAS-BOT-BC89190
Lepidium draba
John Thomas Howell
1930-3-28
4579
San Benito
2 miles south of Paicines.
Comment
UC1177252
Lepidium lasiocarpum var. lasiocarpum
John Thomas Howell
1947-6-18
23277
Marin
Dillons Beach
Comment
CAS-BOT-BC12526
Lepidium nitidum
John Thomas Howell
1931-3-29
6018
San Benito
1.5 miles southeast of San Benito.
Comment
CAS-BOT-BC12673
Lepidium nitidum
John Thomas Howell
1965-5-9
41304
Tulare
About 4.5 miles east northeast of Pixley.
83
Comment
CAS-BOT-BC12761
Lepidium oxycarpum
John Thomas Howell
1930-4-4
4652
Alameda
Bordering San Francisco Bay, 4 miles west of Decoto.
Comment
UCD115858
Lepidium pinnatifidum
John Thomas Howell
1956-6-3
31465
San Francisco
Embarcadero and Townsend St.
Comment
CAS-BOT-BC60034
Lepidium virginicum var. menziesii
John Thomas Howell
1931-4-12
6296
Los Angeles
Santa Cruz Island. At Cochie Bay.
Comment
RSA328
Lepidium virginicum var. pubescens
J. T. Howell
1927-6-21
175
Orange
Near ranch houses, Rancho Santa Ana.
152
Comment
CAS-BOT-BC328087
Lepidospartum squamatum
John Thomas Howell
1963-5-7
39235
Monterey
San Lorenzo Creek, 6 miles NE of King City
182
Comment
CAS-BOT-BC329362
Lepidospartum squamatum
John Thomas Howell
1973-10-31
50264
San Joaquin
Wash of Hospital Creek SW of Vernalis at Interstate Hwy 580
Comment
CAS-BOT-BC329438
Lepidospartum squamatum
John Thomas Howell
1962-7-7
38167
Kern
Kern River Canyon
396
Comment
CAS-BOT-BC225629
Leptosiphon oblanceolatus
John Thomas Howell
1950-7-19
27113
Tulare
Pass north of Hessian Meadows, Sierra Nevada
2743
Comment
CAS-BOT-BC225642
Leptosiphon oblanceolatus
John Thomas Howell
1949-8-9
26160
Tulare
Near Soldier Lake
3352
Comment
CAS-BOT-BC225671
Leptosiphon serrulatus
John Thomas Howell
No date on label.
s.n.
Kern
Hills near Glenville, Greenhorn Range
975
Comment
GH403080
Leptosiphon serrulatus
J. T. Howell
1930-5-15
5132
Unknown
Hills near Glenville, Greenhorn Range
975
Comment Read comments Apr 9 2019
CAS-BOT-BC324054
Lessingia arachnoidea
John Thomas Howell
1927-5-10
2388
San Mateo
Crystal Springs Lake
213
Comment
RSA0001376
Lessingia germanorum var. tenuipes
John T. Howell
1927-8-17
643 -A
San Luis Obispo
New Templeton.
244
Comment
RSA0001377
Lessingia germanorum var. vallicola
John T. Howell
1927-8-27
3065
San Joaquin
Near Manteca.
15
Comment
CAS-BOT-BC339357
Lessingia glandulifera var. glandulifera
John Thomas Howell
1933-8-18
11570
Monterey
17 miles east of Jamesburg, Santa Lucia Mts.
Comment
CAS-BOT-BC339432
Lessingia glandulifera var. glandulifera
John Thomas Howell
1927-8-7
2981
San Diego
In Pine Valley
Comment
CAS-BOT-BC339508
Lessingia glandulifera var. glandulifera
John Thomas Howell
1927-8-28
3068
Tulare
Five miles below Three Rivers
Comment
CAS-BOT-BC339186
Lessingia glandulifera var. glandulifera
John Thomas Howell; Gordon H. True
1971-6-14
47655
Fresno
Kingsburg
91
Comment
CAS-BOT-BC339481
Lessingia glandulifera var. glandulifera
John Thomas Howell
1926-6-13
2011
Stanislaus
On Stanislaus River at Knights Ferry
Comment
CAS-BOT-BC339537
Lessingia glandulifera var. peirsonii
John Thomas Howell
1976-5-17
51657
Kern
Pruett Bridge on Poso Creek, on road from Glennville to Granite Station. Greenhorn Mountains
762
Comment
GH403553
Lessingia hololeuca
J. T. Howell
1947-9-6
24178
Unknown
Chileno Valley
Comment
SBBG27977
Lessingia hololeuca
J. T. Howell
1945-9-16
Marin
N of San Rafael and E of Santa Venetia
Comment
CAS-BOT-BC339620
Lessingia leptoclada
John Thomas Howell
1940-8-10
16141
Fresno
Zumwalt Meadows, Kings River Canyon
Comment
CAS-BOT-BC341813
Lessingia nemaclada
John Thomas Howell
1950-8-27
27429
Fresno
Auberry
Comment
CAS-BOT-BC341856
Lessingia nemaclada
John Thomas Howell
1931-10-12
8159
Mariposa
3 miles from Coulterville on road to Jacksonville
Comment
JEPS59021
Lessingia nemaclada
John Thomas Howell
1960-7-24
36003
Tehama
10 mi ne Red Bluff
Comment
UC421685
Lessingia pectinata var. tenuipes
John Thomas Howell
1927-8-17
3011
Monterey
13 mi sw Jolon (on the Nacimiento River); Santa Lucia Mts., on the Nacimiento River
Comment
RSA118044
Lessingia tenuis
John T. Howell
1955-7-8
30645
Monterey
Santa Lucia Mountains; Hanging Valley
838
Comment
CAS-BOT-BC342095
Leucanthemum vulgare
John Thomas Howell
1949-7-4
25356
San Mateo
On Skyline Blvd., north of Millbrae
Comment
CAS-BOT-BC229465
Lewisia disepala
John Thomas Howell
1940-6-1
15573
Mariposa
Between Snow Creek and Mt. Watkins ridge
Comment
CAS-BOT-BC444249
Lewisia pygmaea
John Thomas Howell
1941-7-22
16395
Fresno
Mono Pass
3505
Comment
CAS-BOT-BC444351
Lewisia pygmaea
John Thomas Howell
1942-8-7
17805
Tulare
Columbine Lake
Comment
CAS-BOT-BC444563
Lewisia triphylla
John Thomas Howell
1960-7-22
35920
Plumas
Lassen Volcanic National Park. Devil's Kitchen to Drakesbad
1828
Comment
CAS-BOT-BC272245
Leymus triticoides
John Thomas Howell
1963-7-10
39679
Alpine
Bog at Grover Hot Springs, Sierra Nevada
1798
Comment
CAS-BOT-BC274532
Leymus triticoides
John Thomas Howell
1955-7-19
30802
Plumas
Vinton
1505
Comment
CAS-BOT-BC272218
Leymus triticoides
John Thomas Howell; Gordon H. True
1972-6-29
48928
Contra Costa
Byron Hot Springs Road southeast of Byron
Comment
CAS-BOT-BC436037
Ligusticum grayi
John Thomas Howell
1934-6-14
12150
Modoc
Warner Mts., near Los Lake
2438
Comment
CAS-BOT-BC509456
Lilium kelleyanum
John Thomas Howell
1948-7-29
25186
Fresno
Bubbs Creek Canyon
2834
Comment
CAS-BOT-BC45859
Limnanthes bakeri
John Thomas Howell
1954-4-24
29148
Mendocino
1.5 miles north of Willits
Comment
JEPS30782
Linanthus bolanderi
John Thomas Howell
1945-6-21
21204
Lake
Bartlett Flat
Comment
UC750734
Linanthus bolanderi
John Thomas Howell
1945-6-21
21204
Lake
Bartlett Flat
Comment
CAS-BOT-BC226862
Linanthus californicus
John Thomas Howell
1931-3-21
5928
Santa Barbara
Cuyama Valley 35 miles east of Santa Maria
Comment
CAS-BOT-BC36111
Lithocarpus densiflorus var. densiflorus
John Thomas Howell
1927-8-22
3036
Marin
near West Point, Mt. Tamalpais
518
Comment
CAS-BOT-BC435437
Lithophragma glabrum
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-27
53104
Alpine
East side of Ebbetts Pass on road to Markleeville; Sierra Nevada
2286
Comment
CAS-BOT-BC435488
Lithophragma glabrum
John Thomas Howell
1941-7-30
16518
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC435651
Lithophragma heterophyllum
John Thomas Howell
1944-4-13
19372
Marin
Big Rock Ridge west of Hamilton Field
Comment
CAS-BOT-BC428429
Lithophragma tenellum
John Thomas Howell
1951-6-27
s.n.
Plumas
Jamison Creek
1828
Comment
CAS-BOT-BC60202
Lobularia maritima
John Thomas Howell
1957-5-17
32247
San Francisco
San Francisco. Bayview Hills.
Comment
CAS-BOT-BC342162
Logfia filaginoides
John Thomas Howell
1930-5-15
5128
Kern
Hills near Glenville [Glennville], Greenhorn Range
975
Comment
CAS-BOT-BC342210
Logfia filaginoides
John Thomas Howell
1943-4-11
17899
Marin
Black Canyon, San Rafael hills
Comment
CAS-BOT-BC342427
Logfia gallica
John Thomas Howell
1963-5-18
39315
Monterey
2.5 miles south of Aromas
60
Comment
CAS-BOT-BC342498
Logfia gallica
John Thomas Howell
1930-6-8
5236
Sonoma
Bodega Road 3 miles east of Valley Ford
Comment
CAS-BOT-BC342456
Logfia gallica
John Thomas Howell
1956-5-6
31363
San Francisco
Sierra & Missouri Sts., San Francisco
Comment
CAS-BOT-BC283557
Lolium multiflorum
John Thomas Howell
1938-5-28
13812
San Benito
Near Hollister
Comment
CAS-BOT-BC283568
Lolium multiflorum
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-22
54091
Yuba
3.6 miles NE of Strawberry Valley on La Porte - Quincy Road
1280
Comment
UC1106115
Lolium perenne
John Thomas Howell
1943-5-9
Marin
San Raphael
Comment
CAS-BOT-BC271210
Lolium temulentum
John Thomas Howell
1963-6-2
39383
Butte
Along highway near Pulga, Sierra Nevada
Comment
UC421670
Lomatium dasycarpum subsp. dasycarpum
John Thomas Howell
1930-4-20
4718
Marin
1 mi. e. Lagunitas
Comment
CAS-BOT-BC30168
Lomatium dissectum var. multifidum
John Thomas Howell
1934-6-11
11941
Modoc
Parker Creek.
1584
Comment
CAS-BOT-BC30147
Lomatium macrocarpum
John Thomas Howell
1934-6-11
11924
Modoc
Parker Creek.
1584
Comment
CAS-BOT-BC240515
Lonicera hispidula
John Thomas Howell
1939-5-21
s.n.
Marin
S. Tiburon
Comment
CAS-BOT-BC240719
Lonicera interrupta
John Thomas Howell; Gordon H. True
1971-6-15
47720
Kern
0.5 miles south of Bodfish Gap. On road to Havilah
1097
Comment
CAS-BOT-BC240864
Lonicera interrupta
John Thomas Howell; Gordon H. True
1966-7-13
41880
Tulare
Canyon of Poison Meadow Creek on Cherry Hill Road. Kern Plateau
2011
Comment
CAS-BOT-BC243906
Lonicera involucrata var. involucrata
John Thomas Howell
1943-7-17
18489
Nevada
Boreal Ridge, west side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC241469
Lonicera involucrata var. ledebourii
John Thomas Howell
1926-3-19
1686
Alameda
Strawberry Canyon, Berkeley Hills
Comment
CAS-BOT-BC342522
Lorandersonia peirsonii
John Thomas Howell
1947-8-5
23737
Inyo
Fifth Lake, Big Pine Lakes
3352
Comment
RSA26268
Lotus nevadensis
J. T. Howell
1940-7-28
15641
Fresno
Near Sphinx Creek.
Comment
UCR88858
Lotus stipularis
J. T. Howell
1954-5-19
29901
Mariposa
Mount Bullion.
640
Comment
UCD106705
Lotus uliginosus
John Thomas Howell
1944-7-30
19856
Marin
Between Mill Valley and head of salt marshes.
3
Comment
CAS-BOT-BC198391
Lupinus albifrons
John Thomas Howell
1964-4-27
40517
Mariposa
El Portal - Sierra Nevada
640
Comment
GH366730
Lupinus albifrons var. douglasii
J. T. Howell
1947-5-25
23196
Unknown
Simmons Trail, Mt. Tamalpais
Comment
CAS-BOT-BC497327
Lupinus arbustus var. arbustus
John Thomas Howell
1934-6-14
12120
Modoc
Near Lost Lake, Warner Mts.
2438
Comment
RSA203627
Lupinus bicolor subsp. tridentatus
J. T. Howell
1933-5-14
11250
Contra Costa
Hills east of St. Marys college
Comment
CAS-BOT-BC208860
Lupinus breweri var. breweri
John Thomas Howell
1938-8-2
14011
Placer
Sand dunes on Lake Tahoe at Brockway.
Comment
CAS-BOT-BC196772
Lupinus breweri var. bryoides
John Thomas Howell
1950-7-17
27030
Tulare
Templeton Meadows
2590
Comment
CAS-BOT-BC215069
Lupinus chamissonis
John Thomas Howell
1939-6-18
14779
Marin
Near Mud Lake
Comment
CAS-BOT-BC205372
Lupinus elatus
John Thomas Howell
1950-7-24
27304
Tulare
Monache Creek, South Fork
3108
Comment
RSA1021
Lupinus elatus
J. T. Howell
1927-7-10
365
San Bernardino
Big Bear, San Bernardino Mountains.
1829
Comment
RSA595067
Lupinus formosus var. formosus
J. T. Howell
1973-7-9
49715
Plumas
Crescent Mills.
1067
Comment
SEINET12885386
Lupinus magnificus var. glarecola
J. T. Howell
1928-1
3893
Unknown
Comment
CAS-BOT-BC8309
Lupinus ochroleucus
John Thomas Howell
1941-6-1
16244
Mariposa
about midway between Briceburg and Mariposa
Comment
SEINET12893026
Lupinus polycarpus
T. J. Howell
1880-1
Unknown
Comment
SEINET12894119
Lupinus polyphyllus
J. T. Howell
1938-1
14406
Unknown
Comment
JEPS33695
Lupinus stiversii
John Thomas Howell
1923-6-7
32
Mariposa
Wawona
1219
Comment
CAS-BOT-BC436675
Luzula comosa var. laxa
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-22
54098
Plumas
Sierra Nevada: 10.6 miles NE of La Porte on road to Quincy
1889
Comment
CAS-BOT-BC441232
Luzula macrantha
John Thomas Howell
1924-5-23
346
Mariposa
Wawona
1219
Comment
UC421645
Luzula macrantha
John Thomas Howell
1927-3-13
2285
Marin
Point San Quentin
Comment
CAS-BOT-BC441253
Luzula macrantha
John Thomas Howell; Gordon True; Walter Knight; Irja Knight
1967-6-12
2087
Plumas
Butterfly Botanical Area and vicinity: area near spring
1127
Comment
CAS-BOT-BC231953
Luzula orestera
John Thomas Howell
1944-8-6
20047
Tuolumne
Dog Lake
Comment
CAS-BOT-BC236934
Luzula orestera
John Thomas Howell
1942-8-1
17530
Tulare
Sky Parlor Meadow, Chagoopa Plateau
Comment
POM261502
Luzula orestera
J. T. Howell
1940-8-1
15839
Tulare
Between Reflection Lake and Harrison Pass.
Comment
CAS-BOT-BC231462
Lycium barbarum
John Thomas Howell
1934-9-23
12570
Solano
Benecia Junction
Comment
RSA0015998
Lythrum hyssopifolia
J. T. Howell
1930-6-8
5233
Sonoma
4 miles east of Valley Ford.
Comment
RSA118072
Madia anomala
J. T. Howell
1955-5-29
30256
Marin
Near Rock Spring on Laurel Dell Trail, Mt. Tamalpais
Comment
CAS-BOT-BC342645
Madia citrigracilis
John Thomas Howell
1934-7-8
12494
Lassen
Spalding's, Eagle Lake
1584
Comment
CAS-BOT-BC344110
Madia elegans
John Thomas Howell; Gordon H. True
1967-8-9
43645
Tulare
Ca. 2.5 miles north of Blackrock Guard Station on Monache Jeep Trail, Kern Plateau
2682
Comment
CAS-BOT-BC344114
Madia elegans
John Thomas Howell
1950-7-19
27112
Tulare
Pass north of Hessian Meadows
2743
Comment
CAS-BOT-BC343782
Madia elegans
John Thomas Howell
1961-9-25
36966
Plumas
Vinton
1506
Comment
CAS-BOT-BC343835
Madia elegans
John Thomas Howell
1929-10-26
4534
Napa
1 mile nw. of Calistoga
Comment
CAS-BOT-BC344322
Madia exigua
John Thomas Howell
1962-6-16
37609
Butte
Feather River West Branch sw. of Nelson Bar
304
Comment
CAS-BOT-BC342868
Madia glomerata
John Thomas Howell
1951-8-20
28196
Plumas
Indian Valley
1066
Comment
CAS-BOT-BC49403
Madia glomerata
John Thomas Howell
1934-7-3
12375
Modoc
5 mi. S of Hackamore.
Comment
CAS-BOT-BC342934
Madia gracilis
John Thomas Howell
1933-5-28
11368
Alameda
Strawberry Canyon, Berkeley Hills
Comment
CAS-BOT-BC343034
Madia gracilis
John Thomas Howell
1962-7-10
38474
Kern
Shirley Meadows, Greenhorn Mountains
2011
Comment
CAS-BOT-BC343086
Madia gracilis
John Thomas Howell
1941-6-10
16289
Marin
Black Point
Comment
CAS-BOT-BC343457
Madia gracilis
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
53968
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on the west slope of Sonoma Mountain
457
Comment
CAS-BOT-BC49377
Madia gracilis
John Thomas Howell
1934-6-30
12268
Modoc
Duncan Horse Camp.
1355
Comment
UC517457
Madia gracilis
John Thomas Howell
1933-5-14
11266
Contra Costa
hills e St. Mary's College
Comment
UCR66732
Madia gracilis
J. T. Howell
1934-6-12
12025
Modoc
Warner mtns. Plum Valley
1660
Comment
CAS-BOT-BC345074
Madia sativa
John Thomas Howell
1957-5-22
32374
San Francisco
Bayview Hills, San Francisco
Comment
CAS-BOT-BC345092
Madia sativa
John Thomas Howell
1964-6-29
40839
San Luis Obispo
Near St. Paul's Episcopal Church, Cambria
Comment
CAS-BOT-BC345205
Madia sativa
John Thomas Howell
1932-9-18
10781
Sonoma
Lower Road to Glen Ellen 1 1/2 miles sw. of Kenwood
Comment
CAS-BOT-BC511481
Maianthemum racemosum subsp. amplexicaule
John Thomas Howell
1923-5-25
20
Mariposa
Wawona Valley
1219
Comment
POM196475
Maianthemum racemosum subsp. amplexicaule
J. T. Howell
1923-5-25
20
Mariposa
Wawona Valley
1220
Comment
CAS-BOT-BC204071
Malacothamnus fremontii
John Thomas Howell; Thos. H. Kearney
1950-8-28
27432
Tulare
Tule River Canyon 5 miles above Springville
Comment
GH420528
Malacothamnus fremontii
J. T. Howell & G. H. True
1967-8-8
43500
Unknown
Near north end of Lamont Meadow, Kern Plateau
1828
Comment
CAS-BOT-BC204096
Malacothamnus hallii
John Thomas Howell; T. H. Kearney
1950-7-5
26634
Contra Costa
On North Road, Mt. Diablo
259
Comment
UC1177006
Malacothamnus palmeri
John Thomas Howell
1955-7-8
30642
Monterey
Arroyo Seco road 3 mi from Escondido Camp; Santa Lucia Mts.
792
Comment
CAS-BOT-BC347442
Malacothrix floccifera
John Thomas Howell; Gordon H. True
1973-8-1
50158
Lassen
Gold Run Creek road south of Susanville, Diamond Range
1584
Comment
CAS-BOT-BC347653
Malacothrix glabrata
John Thomas Howell
1962-5-21
37159
Kern
Northeast of Lake Isabella
792
Comment
RSA95029
Malacothrix saxatilis var. arachnoidea
J. T. Howell
1933-8-18
11590
Monterey
Carmel Valley, 10 miles east of Carmel
Comment
RSA517871
Malva nicaeensis
J. T. Howell
1969-4-22
45547
Amador
Fiddletown.
518
Comment
UCD116599
Malva nicaeensis
John Thomas Howell
1946-5-16
21900
San Francisco
Van Ness Avenue at Fort Mason, San Francisco.
Comment
SEINET7248018
Malva pseudolavatera
John Thomas Howell
1945-1
20913 A
San Francisco
Cf. Leafl. West. Bot. 1:173, Strybing Arboretum, Golden Gate Park.
Comment
CAS-BOT-BC71150
Marsilea oligospora
John Thomas Howell
1937-7-21
13215
Trinity
Big Flat
Comment
SEINET3816873
Matricaria discoidea
John Thomas Howell
1965-4-27
41241
Merced
5 miles east of Los Banos, el. ca. 100 feet, Merced
Comment
SD72063
Matricaria occidentalis
John Thomas Howell
1965-4-27
41241
Merced
5.0 miles east of Los Banos.
29
Comment
CDA4231
Medicago praecox
T. Howell
1954-5-2
29188
Tehama
Near Red Bluff.
0
Comment
CAS-BOT-BC269238
Melica aristata
John Thomas Howell
1951-7-19
27948
Tulare
Mineral King and vicinity. Monarch Lakes Trail
2438
Comment
CAS-BOT-BC271147
Melica aristata
John Thomas Howell
1962-7-8
38329
Kern
1.5 miles southeast of Summit, Greenhorn Mountains, Sierra Nevada
1524
Comment
CAS-BOT-BC269384
Melica californica
John Thomas Howell; H. Keith Wagnon
1980-5-26
53577
Butte
Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge
Comment
CAS-BOT-BC280945
Melica imperfecta
John Thomas Howell; Gordon H. True
1967-5-30
42459
Tulare
About 1.5 miles from Lamont Meadow on road to Long Valley, Kern Plateau
1737
Comment
CAS-BOT-BC281541
Melica imperfecta
John Thomas Howell
1972-4-24
48693
Mariposa
El Portal
640
Comment
RSA299156
Melica imperfecta
J. T. Howell
1958-5-22
33095
Tulare
Kern River Canyon 6 miles S of Roads end PO
945
Comment
CAS-BOT-BC281150
Melica stricta
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-16
53828
Tulare
Sherman Pass Rd W of the pass, Kern Plateau
2438
Comment
CAS-BOT-BC281185
Melica stricta
John Thomas Howell; Gordon H. True
1967-5-30
42462
Tulare
About 1.5 miles from Lamont Meadow on road to Long Valley, Kern Plateau
1737
Comment
RSA299154
Melica stricta
J. T. Howell
1958-5-26
33413
Inyo
Onion Valley road
Comment
UC1106142
Melica subulata
John Thomas Howell
1945-6-3
20916
Marin
near Inverness
Comment
CAS-BOT-BC262506
Melica torreyana
John Thomas Howell
1933-5-14
11257
Contra Costa
Hills east of St. Mary's College
Comment
CAS-BOT-BC262539
Melica torreyana
John Thomas Howell
1939-5-14
14678
Marin
Near Collier Spring, Mt. Tamalpais
Comment
CAS-BOT-BC264237
Melica torreyana
John Thomas Howell
1957-5-22
32375
San Francisco
Bayview Hills, San Francisco
Comment
CAS-BOT-BC170840
Mentzelia veatchiana
John Thomas Howell
1960-6-6
35364
Fresno
Kings Canyon 5.5 mi. w. of Cedar Grove - Sierra Nevada
1097
Comment
CAS-BOT-BC428503
Micranthes aprica
John Thomas Howell
1946-7-14
22299
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC428897
Micranthes californica
John Thomas Howell
1930-3-29
4614
San Benito
The Pinnacles
Comment
CAS-BOT-BC429096
Micranthes odontoloma
John Thomas Howell
1960-8-19
36128
Tehama
Lassen Volcanic National Park. Brokeoff Mt. Trail
2346
Comment
CAS-BOT-BC429251
Micranthes oregana
John Thomas Howell
1951-8-21
28267
Sierra
Yuba Pass
2042
Comment
CAS-BOT-BC429182
Micranthes oregana
John Thomas Howell
1949-8-12
26249
Inyo
Cottonwood Creek
3108
Comment
CAS-BOT-BC348631
Micropus californicus var. californicus
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
53960
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on the west slope of Sonoma Mountain
457
Comment
POM193957
Microseris bigelovii
J. T. Howell
1929-5-26
4243
Mendocino
Mendocino coastal plain, Fort Bragg
Comment
CAS-BOT-BC348827
Microseris campestris
John Thomas Howell
1948-4-26
24274
Tulare
Flats near Earlimart
Comment
CAS-BOT-BC348938
Microseris douglasii subsp. douglasii
John Thomas Howell
1946-5-14
21837
Marin
Between Barths Retreat and Potrero Meadow, Mt. Tamalpais
Comment
CAS-BOT-BC348943
Microseris douglasii subsp. douglasii
J. T. Howell
1943-5-22
s.n.
Marin
Lagunitas Meadow, Mt. Tamalpais
Comment
CAS-BOT-BC349090
Microseris douglasii subsp. tenella
John Thomas Howell
1935-4-11
12591
Alameda
Tesla Hills
Comment
CAS-BOT-BC349215
Microseris elegans
John Thomas Howell
1963-6-22
39545
Monterey
Priest Valley
685
Comment
UCD134528
Microseris elegans
John Thomas Howell
1967-4-30
42138
Tulare
from N1/3 of vernal pool natural area, 4.5 miles ENE of Pixley.
83
Comment
CAS-BOT-BC322710
Microseris laciniata
John Thomas Howell; Alice Eastwood
1938-7-6
6086
Sonoma
Alder Glen Springs
Comment
CAS-BOT-BC349379
Microseris nutans
John Thomas Howell
1937-7-22
13266
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC322731
Microseris paludosa
John Thomas Howell
1944-5-14
19457
Marin
Hills near Salmon Creek School
Comment
CAS-BOT-BC197895
Microsteris gracilis
John Thomas Howell
1934-6-12
12023
Modoc
Plum Valley.
Comment
CAS-BOT-BC9707
Mimulus barbatus
John Thomas Howell; Gordon H. True
1970-7-29
47127
Tulare
Pine Flat, Kern Plateau
2194
Comment
CAS-BOT-BC154258
Mimulus nanus var. mephiticus
John Thomas Howell
1950-7-17
27020
Tulare
Templeton Meadows
2590
Comment
CAS-BOT-BC9800
Mimulus palmeri
John Thomas Howell; Gordon H. True
1971-6-17
48072
Kern
3.5 miles east of Bodfish Gap.
1676
Comment
CAS-BOT-BC11030
Mimulus suksdorfii
John Thomas Howell
1963-7-10
39739
Alpine
Sagebrush Flat, 0.5 mile west of Monitor Pass.
2529
Comment
CAS-BOT-BC174537
Minuartia californica
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52952
Calaveras
Glencoe
822
Comment
CAS-BOT-BC174629
Minuartia californica
John Thomas Howell
1967-4-30
42127
Tulare
About 4 1/2 miles east-northeast of Pixley. From N 1/3 of area
83
Comment
CAS-BOT-BC388611
Minuartia douglasii
John Thomas Howell
1967-6-22
42616
Butte
Magalia
701
Comment
CAS-BOT-BC388686
Minuartia douglasii
John Thomas Howell
1924-5-25
350
Mariposa
Near Fish Hatchery, Wawona
1219
Comment
CAS-BOT-BC388918
Minuartia douglasii
John Thomas Howell; Gordon H. True
1968-5-14
44379
Tulare
Cherry Hill Road at Rincon Trail, Brush Creek Canyon. Kern Plateau
1463
Comment
CAS-BOT-BC174720
Minuartia nuttallii
John Thomas Howell
1946-7-15
22403
Inyo
Ruby Lake, Rock Creek Lake Basin
3383
Comment
CAS-BOT-BC181577
Minuartia nuttallii var. gracilis
John Thomas Howell
1941-8-8
16871
Mono
San Joaquin Mt.
Comment
CAS-BOT-BC181602
Minuartia nuttallii var. gracilis
John Thomas Howell
1958-8-1
34157
Fresno
Ridge north of Dougherty Meadow - Sierra Nevada
3048
Comment
UC1035443
Minuartia rosei
J. T. Howell
1955-6-13
30370
Trinity
Peanut; ; Peanut, Trinity Co.
762
Comment
CAS-BOT-BC181170
Minuartia rubella
John Thomas Howell
1944-8-15
20569
Tuolumne
Mt. Conness
3657
Comment
RSA275
Mirabilis laevis var. villosa
J. T. Howell
1927-6-11
95
San Bernardino
Between Cajon Pass and Hesperia
1067
Comment
CAS-BOT-BC435066
Mollugo verticillata
John Thomas Howell
1959-9-20
34635
Butte
Eastern outskirts of Oroville
60
Comment
RSA263810
Mollugo verticillata
J. T. Howell
1970-9-22
47459
Kern
Lake Isabella (east side of north arm).
793
Comment
CAS-BOT-BC219946
Monardella breweri subsp. lanceolata
John Thomas Howell
1962-6-16
37611
Butte
Feather River West Branch sw. of Nelson Bar
304
Comment
CAS-BOT-BC219970
Monardella breweri subsp. lanceolata
John Thomas Howell
1958-7-19
33667
Fresno
Cedar Grove
1402
Comment
CAS-BOT-BC220151
Monardella exilis
John Thomas Howell; Gordon H. True
1967-7-3
42760
Tulare
Between Chimney and Lamont Meadows, Kern Plateau
1981
Comment
SD149152
Monardella linoides subsp. anemonoides
John Thomas Howell
1971-6-17
48040
Kern
Sierra Nevada, one mi. E of Bodfish Gap
1310
Comment
CAS-BOT-BC221782
Monardella odoratissima
John Thomas Howell
1934-7-9
12525
Lassen
Pine Creek Flat
Comment
CAS-BOT-BC221995
Monardella odoratissima subsp. glauca
John Thomas Howell
1947-8-5
23798
Inyo
Fifth Lake, Big Pine Lakes
3352
Comment
CAS-BOT-BC222043
Monardella odoratissima subsp. glauca
John Thomas Howell
1950-7-24
27327
Tulare
East of Hessian Meadows
2895
Comment
RSA401649B
Monardella odoratissima subsp. pallida
J. T. Howell
1948-7-31
25244
Inyo
Kearsarge Pass Trail.
2896
Comment
SEINET892714
Monardella odoratissima subsp. pallida
John Thomas Howell
1945-1
21164
Lake
Sawmill Flat to Ruppert Ridge, Barlett Mountain, Lake County
Comment
CAS-BOT-BC222202
Monardella odoratissima subsp. pallida
John Thomas Howell; Gordon H. True
1970-7-29
47069
Tulare
1 mile from Long Meadow on road to Cannell Meadow. Kern Plateau
2346
Comment
CAS-BOT-BC220219
Monardella sheltonii
John Thomas Howell
1923-7-25
152
Mariposa
At entrance of Yosemite Park on the Wawona Road
Comment
CAS-BOT-BC220162
Monardella sinuata subsp. nigrescens
John Thomas Howell
1933-7-9
11431
San Francisco
Lake Merced, San Francisco
Comment
CAS-BOT-BC220544
Monardella villosa
John Thomas Howell
1939-7-2
14836
Marin
Between Pirates Cove and Big Lagoon
Comment
CAS-BOT-BC349430
Monolopia lanceolata
John Thomas Howell
1931-3-17
5797
Fresno
14 miles east of Coalinga
Comment
CAS-BOT-BC444615
Montia chamissoi
John Thomas Howell
1941-7-31
16544
Madera
Agnew Pass Trail
Comment
CAS-BOT-BC444777
Montia chamissoi
John Thomas Howell
1950-7-15
26911
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC444733
Montia chamissoi
John Thomas Howell
1938-8-2
13993
Placer
5 miles n. of Brockway
Comment
CAS-BOT-BC444834
Montia fontana
John Thomas Howell
1949-7-25
25724
Tulare
Siberian Pass Creek
3352
Comment
CAS-BOT-BC445077
Montia linearis
John Thomas Howell; Gordon H. True
1970-5-28
5371
Nevada
Bear Valley on Highway 20, ca. 20 mi. E. of Nevada City.
1402
Comment
CAS-BOT-BC262635
Muhlenbergia asperifolia
John Thomas Howell
1973-7-10
49801
Lassen
Hwy. 395, 4 miles north of Doyle
Comment
CAS-BOT-BC264550
Muhlenbergia filiformis
John Thomas Howell; Gordon H. True
1966-7-11
41630
Tulare
Poison Meadow, Kern Plateau
Comment
CAS-BOT-BC264559
Muhlenbergia filiformis
John Thomas Howell
1950-7-15
26916
Tulare
Bakeoven Meadows, S Fork of Kern River
2468
Comment
SEINET7294631
Muhlenbergia mexicana var. filiformis
John Thomas Howell
1961-1
26716
Butte
Bank of Feather River, Oroville
53
Comment
CAS-BOT-BC275195
Muhlenbergia montana
John Thomas Howell
1949-7-23
25646
Tulare
Soldier Lake
3352
Comment
CAS-BOT-BC274958
Muhlenbergia richardsonis
John Thomas Howell
1944-8-7
20053
Tuolumne
Tuolumne Meadows
Comment
CAS-BOT-BC275003
Muhlenbergia richardsonis
John Thomas Howell
1949-7-29
25890
Tulare
Little Whitney Meadow
2590
Comment
CAS-BOT-BC275047
Muhlenbergia richardsonis
John Thomas Howell; Gordon H. True
1970-7-29
47144
Tulare
End of Cannell Meadow road ca. 1 mile W of ranger station, Kern Plateau
2286
Comment
CAS-BOT-BC83327
Myosurus minimus
John Thomas Howell
1929-4-27
4209
Merced
3 miles northwest of Merced on Oakdale Road.
51
Comment
UCD96306
Myosurus minimus
John Thomas Howell
1971-3-23
47585
Merced
northeast of Gustine on road to Merced.
30
Comment
CAS-BOT-BC259807
Nassella cernua
John Thomas Howell
1963-5-6
39162
Monterey
Santa Lucia Mountains. Jolon
298
Comment
UCD87433
Nassella cernua
John Thomas Howell; Gordon H. True
1968-5-12
44193
Kern
.Bodfish.
762
Comment
CAS-BOT-BC259969
Nassella lepida
John Thomas Howell
1927-6-9
2464
Orange
N side of Santa Ana Canon [Santa Ana Canyon]
152
Comment
UC618430
Navarretia atractyloides
John Thomas Howell
1937-6-18
13113
Lake
2 mi n Lower Lake
Comment
RSA26220
Navarretia divaricata
J. T. Howell
1937-7-27
13572
Siskiyou
Salmon River near Big Flat
1524
Comment
UC908379
Navarretia divaricata
J. T. Howell
1926-6-26
2124
Plumas
1 mi s Prattville; Lake Almanor
Comment
POM180787
Navarretia divaricata subsp. vividior
J. T. Howell
1930-7-13
5347
Napa
On the edge of the Crater Country
Comment
RSA580
Navarretia hamata
J. T. Howell
1927-8-7
605
San Diego
Near Dulzura Ranch.
335
Comment
JEPS15003
Navarretia heterodoxa
John Thomas Howell
1937-7-4
13056
Napa
Wooden Valley Grade
Comment
UC856844
Navarretia nigelliformis subsp. radians
John Thomas Howell
1937-5-20
12962
San Benito
12 mi s Paicines; San Benito Co.
Comment
RSA0004854
Navarretia nigelliformis var. radians
J. T. Howell
1937-5-20
12962
San Benito
12 miles south of Paicines.
Comment
CAS-BOT-BC233567
Navarretia prostrata
John Thomas Howell
1965-4-27
41237
Merced
5 miles E of Los Banos [Banos]
30
Comment
POM180640
Navarretia squarrosa
J. T. Howell
1930-7-20
5379
Marin
Hills just north of Pheonix Lake.
Comment
CAS-BOT-BC232736
Navarretia subuligera
John Thomas Howell
1940-5-19
15462
Napa
Upper St. Helena Creek
Comment
UC856900
Navarretia viscidula
John Thomas Howell
1937-7-4
13082
Sonoma
5 mi n Sebastopol
Comment
SEINET10464831
Nemacladus capillaris
John Thomas Howell
1954-6-6
Howell 29975
Tuolumne
1128
Comment
CAS-BOT-BC219364
Nemophila
John Thomas Howell
1976-4-1
51524
Butte
Table Mountain, 4 to 5 miles north of Oroville
152
Comment
POM204479
Nemophila heterophylla
J. T. Howell
1933-5-14
11218
Contra Costa
Hills east of St. Mary s college
Comment
RSA616
Nemophila menziesii
J. T. Howell
1928-3-18
889
Orange
Rancho Santa Ana, Botanic Garden.
152
Comment
JEPS1518
Nemophila menziesii var. integrifolia
John Thomas Howell
1928-5-4
3770
Los Angeles
Monrovia Canyon , Monrovia Canyon (San Gabriel Mts.)
Comment
CAS-BOT-BC219417
Nemophila parviflora
John Thomas Howell
1945-6-18
21001
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC179298
Nemophila parviflora var. austiniae
John Thomas Howell
1934-6-13
12054
Modoc
Fandango Pass.
1828
Comment
CAS-BOT-BC230554
Nemophila parviflora var. austiniae
J. T. Howell; et al.
1967-6-12
2076
Plumas
Butterfly Botanical Area and Vicinity. Near spring
1127
Comment
CAS-BOT-BC230585
Nemophila parviflora var. quercifolia
John Thomas Howell
1930-5-14
5085
Kern
Greenhorn Range
1600
Comment
GH356869
Notholithocarpus densiflorus
J. T. Howell
1947-5-25
23206
Unknown
Berry Trail, Mt. Tamalpais
Comment
PGM1177
Nuttallanthus texanus
J. T. Howell
1969-4-17
Monterey
Northern Monterey County, Marina, Slopes of maritime dune hills
Comment
CAS-BOT-BC7136
Oenothera heterochroma var. monoensis
John Thomas Howell
1947-8-16
24172
Mono
Sherwin Grade north of Bishop
1676
Comment
SEINET12564281
Oenothera rosea
John Thomas Howell
1958-1
33024
San Francisco
On Greenich St. between Polk & Larkin Streets. Russian Hill.
Comment
CAS-BOT-BC58095
Opuntia basilaris var. basilaris
John Thomas Howell
1962-7-7
38178
Kern
Field redacted by CAS, contact the data manager for more information
731
Comment
RSA28224
Oreobolopsis clementis
J. T. Howell
1951-7-21
28080
Tulare
White Chief region; Mineral King and vicinity.
3049
Comment
CAS-BOT-BC350030
Oreostemma alpigenum var. andersonii
John Thomas Howell
1947-8-5
23738
Inyo
Fifth Lake, Big Pine Lakes
3352
Comment
CAS-BOT-BC499891
Orobanche fasciculata
John Thomas Howell
1930-5-13
5047
Kern
Kern Canyon, 7 mi above Kernville
844
Comment
CAS-BOT-BC499914
Orobanche fasciculata
John Thomas Howell
1965-4-26
41218
Madera
Sierra Nevada: 4.7 mi S of Northfork
609
Comment
JEPS28854
Orobanche fasciculata
John Thomas Howell
1962-7-8
38229
Kern
Sierra Nevada. Black Mt. south side Greenhorn Mountains.
Comment
CAS-BOT-BC500248
Orobanche uniflora subsp. occidentalis
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52771
Calaveras
Sierra Nevada: Camp Nine Road NE of Vallecito
609
Comment
CAS-BOT-BC15749
Osmorhiza occidentalis
John Thomas Howell
1934-6-11
11948
Modoc
Parker Creek.
1584
Comment
CAS-BOT-BC413337
Oxytheca perfoliata
John Thomas Howell
1957-6-24
32730
Kern
4 miles n. of Mojave
914
Comment
UC421648
Oxytheca trilobata
John Thomas Howell
1927-8-2
2920
Riverside
near Idyllwild; Mt. San Jacinto
1676
Comment
CAS-BOT-BC202202
Oxytropis oreophila
John Thomas Howell
1947-7-25
23668
San Bernardino
Mt. San Gorgonio, San Bernardino Mts.
3505
Comment
CAS-BOT-BC316782
Packera cana
John Thomas Howell
1950-7-21
27157
Tulare
Monache Mt.
2590
Comment
CAS-BOT-BC50307
Packera cana
John Thomas Howell
1934-6-12
12015
Modoc
Between Davis Creek and Plum Valley.
Comment
RSA302
Paeonia californica
J. T. Howell
1928-2-6
809
Orange
Claymine Canyon, Sierra Peak, Santa Ana Mts.
244
Comment
GH355604
Panicum capillare var. occidentale
J. T. Howell
1937-7-21
13219
Unknown
Big Flat, Trinity County
Comment
CAS-BOT-BC253813
Panicum dichotomiflorum
John Thomas Howell
1959-9-26
35065
Plumas
Near Virgilia
838
Comment
CAS-BOT-BC253835
Panicum dichotomiflorum
John Thomas Howell
1988-9-15
s.n.
Marin
Nicasio Reservoir
Comment
CAS-BOT-BC253864
Panicum miliaceum
John Thomas Howell
1957-6-25
32764
Kern
Tehachapi Mountains, 2.5 miles SE of Keene
914
Comment
SEINET195364
Papaver californicum
John Thomas Howell
1946-5-30
21962
Marin
Little Carson Canyon.
Comment
CAS-BOT-BC274145
Pappostipa speciosa
John Thomas Howell; Gordon H. True
1971-6-17
48021
Kern
0.5 mile east of Bodfish Gap
1219
Comment
UC750600
Parapholis incurva
John Thomas Howell
1945-5-6
20816
Marin
San Rafael
Comment
RSA0034598
Parapholis incurva
J. T. Howell
1945-5-6
20816
Marin
San Rafael.
Comment
UC565378
Parvisedum pentandrum
John Thomas Howell
1937-5-19
12939
San Benito
The Pinnacles
Comment
UC421688
Parvisedum pumilum
John Thomas Howell
1930-4-13
4705
Calaveras
Sierra Foothills 4.7 mi w of San Andreas; Sierra Foothills
Comment
CAS-BOT-BC265632
Paspalum distichum
John Thomas Howell
1945-6-22
21221
Lake
Clear Lake Oaks
Comment
CAS-BOT-BC69312
Pellaea andromedifolia
John Thomas Howell
1962-5-22
37260
Tulare
Kern River Canyon above Roads End
1097
Comment
CAS-BOT-BC67737
Pellaea andromedifolia
John Thomas Howell; Gordon H. True
1969-9-28
46237
Kern
Sierra Nevada - 1 mile northeast of mouth of Kern River Canyon
259
Comment
CAS-BOT-BC67626
Pellaea breweri
John Thomas Howell
1949-7-24
25700
Tulare
Primrose Lake
3505
Comment
CAS-BOT-BC71225
Pellaea bridgesii
John Thomas Howell
1925-7-2
1321 C
El Dorado
Trail to Desolation Valley above Glen Alpine, Lake Tahoe region
Comment
CAS-BOT-BC71239
Pellaea bridgesii
John Thomas Howell
1951-6-28
27694
Plumas
Eureka Peak
2133
Comment
CAS-BOT-BC258782
Pennisetum clandestinum
J. T. Howell
1956-7-11
s.n.
Alameda
Lawn below Agricultural Hall, Univ. of California, Berkeley
Comment
CAS-BOT-BC265302
Penstemon davidsonii var. davidsonii
John Thomas Howell
1941-8-3
16712
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC265331
Penstemon davidsonii var. davidsonii
Thomas Howell
1946-7-20
22589
Fresno
Ridge S of Mono Rock
3596
Comment
UC750557
Penstemon davidsonii var. davidsonii
John Thomas Howell
1946-7-16
22459
Inyo
Rock Creek Lake Basin, W side of Morgan Pass
Comment
RSA299497
Penstemon grinnellii var. scrophularioides
J. T. Howell, Gordon H. True Jr.
1967-7-3
42772
Tulare
Between Chimney and Lamont Meadows. Kern Plateau.
1951
Comment
CAS-BOT-BC264474
Penstemon heterodoxus var. heterodoxus
John Thomas Howell
1943-7-20
18617
Nevada
Castle Peak
Comment
CAS-BOT-BC245654
Penstemon incertus
John Thomas Howell; Gordon H. True
1971-6-16
47904
Kern
Along Kelso Creek, 15 miles south of Weldon on road to Kelso Valley, Sierra Nevada
1219
Comment
RSA736
Penstemon labrosus
J. T. Howell
1927-7-10
360 -A
San Bernardino
Big Bear, San Bernardino Mountains.
1829
Comment
CAS-BOT-BC239195
Penstemon newberryi var. berryi
John Thomas Howell
1941-7-30
16477
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC239224
Penstemon newberryi var. berryi
John Thomas Howell
1923-5-27
26
Mariposa
Top of Chilnualna Fall, Yosemite Park
2133
Comment
CAS-BOT-BC239258
Penstemon newberryi var. berryi
John Thomas Howell
1944-8-14
s.n.
Tuolumne
Tuolumne Canyon above Glen Aulin
Comment
CAS-BOT-BC239360
Penstemon newberryi var. berryi
John Thomas Howell; Gordon H. True
1970-6-23
46614
Tulare
Cherry Hill Road 2 miles above Rincon Trail intersection, Brush Creek Canyon, Kern Plateau
1676
Comment
CAS-BOT-BC239666
Penstemon sudans
John Thomas Howell
1974-7-9
50479
Lassen
Between Susanville and SW end of Eagle Lake
1828
Comment
CAS-BOT-BC327989
Pentachaeta alsinoides
John Thomas Howell
1953-6-15
29089
Monterey
Hastings Reservation, Santa Lucia Mts.
Comment
GH414098
Pentachaeta bellidiflora
J. T. Howell
1946-5-25
21933
Unknown
Greenbrae Hills
Comment
CAS-BOT-BC218403
Perideridia pringlei
John Thomas Howell; Gordon H. True
1971-6-15
47721
Kern
0.5 miles south of Bodfish Gap on road to Havilah, Sierra Nevada
1097
Comment
CAS-BOT-BC418891
Persicaria hydropiperoides
John Thomas Howell
1929-9-21
4418
San Joaquin
Holt
Comment
CAS-BOT-BC413787
Persicaria lapathifolia
John Thomas Howell
1956-10-28
31928
San Francisco
San Francisco. Mountain Lake, Presidio
Comment
CAS-BOT-BC419290
Persicaria pensylvanica
John Thomas Howell
1932-9-18
10778
Sonoma
Bank of slough draining Kenwood Marsh
Comment
CAS-BOT-BC419354
Persicaria punctata
John Thomas Howell
1963-6-21
39443
Monterey
Along Highway US 101, Prunedale
Comment
RSA690
Petunia parviflora
J. T. Howell
1927-6-30
247
Orange
Bryant Ranch, near Long Beach.
15
Comment
RSA88075
Phacelia austromontana
J. T. Howell
1951-7-20
27982
Tulare
Franklin Pass Trail.
2530
Comment
SBBG41212
Phacelia californica
J. T. Howell
1938-6-5
13894
Marin
between Fern Cyn and Azalea Flat, Mt Tamalpais
Comment
CAS-BOT-BC142695
Phacelia ciliata var. opaca
John Thomas Howell
1929-4-1
4117
Merced
Clay hills, 5 miles ne. of Merced
Comment
RSA88080
Phacelia corymbosa
J. T. Howell
1951-6-26
27522
Butte
Near Pulga.
366
Comment
RSA606
Phacelia distans
J. T. Howell
1928-3-18
892
Orange
Rancho Santa Ana, Botanic Garden.
152
Comment
UC702991
Phacelia distans
John Thomas Howell
1928-6-10
3882
Los Angeles
Deer Park San Gabriel Mts., Monrovia Canyon
Comment
POM299002
Phacelia divaricata
J. T. Howell
1933-4-23
11171
San Benito
Near Hernandez.
Comment
POM399066
Phacelia divaricata var. congdonii
J. T. Howell
1930-5-14
5101
Kern
West slope of Greenhorn Range on road from Kernville to Glenville
1372
Comment
SBBG41124
Phacelia hastata
J. T. Howell
1963-8-22
40271
Mono
2.5 mi S of Crestview
Comment
SBBG41126
Phacelia hastata
J. T. Howell
1934-6-16
12217
Modoc
2 mi NE of Canby
Comment
CAS-BOT-BC145042
Phacelia keckii
John Thomas Howell
1931-5-30
6611
Riverside
Santiago Peak, Santa Ana Mts.
1219
Comment
CAS-BOT-BC145067
Phacelia mohavensis
John Thomas Howell; Gordon H. True
1966-7-12
41487
Kern
At spring in Bartolas Country, easterly from Cane Meadow
2194
Comment
RSA624
Phacelia mutabilis
J. T. Howell
1927-8-29
718
Tulare
Cahoon Meadow, Sequoia National Park.
2500
Comment
RSA88078
Phacelia mutabilis
J. T. Howell
1951-7-20
27981
Tulare
Near Mineral King.
2409
Comment
CDA40398
Phacelia nashiana
J. T. Howell, Gordon H. True
1973-4-6
49138
Kern
Sierra Nevada; Southern Sierra Nevada; Sand Canyon.
0
Comment
POM299085
Phacelia orogenes
J. T. Howell
1942-7-25
s.n.
Tulare
Eagle Lake Trail near Mineral King
Comment
SEINET4852894
Phacelia peirsoniana
John Thomas Howell
1938-8-7
14353
Mono
Near Little Round Valley.
Comment
RSA78608
Phacelia racemosa
J. T. Howell
1943-7-14
18288
Nevada
West side of Donner Pass near Norden.
2134
Comment
RSA632
Phacelia ramosissima var. austrolitoralis
J. T. Howell
1927-6-3
21
Orange
Botany Garden, Rancho Santa Ana.
152
Comment
CAS-BOT-BC154417
Phacelia ramosissima var. latifolia
John Thomas Howell
1949-7-17
25400
Inyo
Wonoga Peak
2743
Comment
CAS-BOT-BC159015
Phacelia ramosissima var. latifolia
John Thomas Howell; Gordon H. True
1970-6-26
46873
Tulare
Taylor Meadow, Kern Plateau
2194
Comment
POM299071
Phacelia ramosissima var. ramosissima
J. T. Howell
1933-8-19
11617
Santa Cruz
Mt. Hermon. Santa Cruz Mountains.
Comment
CAS-BOT-BC356075
Phalacroseris bolanderi
John Thomas Howell
1924-7-28
555
Mariposa
Buck Camp Trail between Johnson Lake and Chilnualna Creek, Yosemite Park
Comment
SEINET195299
Phalaris aquatica
John Thomas Howell
1945-8-12
21381
Marin
Tiburon
Comment
UCD88139
Phalaris aquatica
John Thomas Howell
1945-8-12
21381
Marin
Tiburon.
Comment
CAS-BOT-BC265854
Phalaris californica
John Thomas Howell
1940-5-19
15444
Napa
Near Calistoga
Comment
CAS-BOT-BC259068
Phalaris lemmonii
John Thomas Howell
1944-5-7
19426
Marin
Greenbrae
Comment
CAS-BOT-BC250618
Phalaris minor
John Thomas Howell
1960-3-24
35152
Riverside
La Quinta
Comment
RSA118063
Phalaris minor
J. T. Howell
1955-5-20
30208
Monterey
Soledad
Comment
SBBG115738
Phalaris minor
J. T. Howell, G. H. True
1974-3-3
50330
Yolo
ca. 7 mi N of Madison
Comment
UC1177483
Phalaris minor
John Thomas Howell
1944-5-28
19511
Marin
between Manzanita and Almonte
Comment
CAS-BOT-BC253552
Phleum alpinum
John Thomas Howell
1946-6-13
22052
Marin
East of Dillons Beach
Comment
CAS-BOT-BC232803
Phlox dispersa
John Thomas Howell
1949-7-18
25475
Tulare
Army Pass
3627
Comment
CAS-BOT-BC171142
Phoradendron serotinum subsp. tomentosum
John Thomas Howell; Gordon H. True
1965-7-14
2221
Nevada
Washington Rd. 1 1/2 mi N of Highway 20 (Wash. Jct.) 12 mi E of Nevada City
1280
Comment
CAS-BOT-BC56437
Phyllodoce breweri
John Thomas Howell
1925-6-28
1237
El Dorado
Trail between Eagle Lake and Velma Lakes, Lake Tahoe region
Comment
CAS-BOT-BC58180
Phyllodoce breweri
John Thomas Howell
1944-8-15
20526
Tuolumne
Mt. Conness.
3352
Comment
CAS-BOT-BC58248
Phyllodoce breweri
John Thomas Howell
1951-7-20
28031
Tulare
Mineral King and Vicinity. Near town e. of Farewell Gap.
3352
Comment
CAS-BOT-BC78176
Picea breweriana
John Thomas Howell
1937-7-24
13413
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
GH339987
Picea breweriana
T. J. Howell
1884-6-17
270
Unknown
Siskiyou Mountains at the head of the Illinois River
Comment
UC813170
Picea breweriana
John Thomas Howell
Siskiyou
Caribou Basin
Comment
CAS-BOT-BC76932
Pilularia americana
John Thomas Howell
1930-5-21
5195
Santa Clara
1 mile south of Morgan Hill
Comment
CAS-BOT-BC78210
Pinus albicaulis
John Thomas Howell
1960-8-19
36189
Tehama
Summit ridge, Brokoff Mt.
2804
Comment
CAS-BOT-BC73365
Pinus attenuata
John Thomas Howell
1955-5-19
30190
Monterey
Along ridge between Reliz and Bear Canyons, Santa Lucia Mts.
1158
Comment
CAS-BOT-BC73322
Pinus balfouriana
John Thomas Howell
1940-8-8
16061
Tulare
Between Relection Lake and Harrison Pass.
Comment
CAS-BOT-BC78353
Pinus balfouriana
John Thomas Howell
1969-8-25
45906
Tulare
Mineral King, just s. of pack station
2377
Comment
CAS-BOT-BC73213
Pinus flexilis
John Thomas Howell
1949-8-12
26231
Inyo
Upper Cottonwood Lakes
3398
Comment
CAS-BOT-BC73175
Pinus jeffreyi
John Thomas Howell
1944-8-11
s.n.
Tuolumne
Tuolumne Meadows, Lambert Dome
Comment
CAS-BOT-BC78722
Pinus jeffreyi
John Thomas Howell
1960-8-20
36207
Tehama
Morgan
1463
Comment
GH357159
Pinus radiata
J. T. Howell
1982-10-9
54702
Unknown
San Francisco, tree near the Pershing statue at east end of Music Concourse, Golden Gate Park, San Francisco
Comment
CAS-BOT-BC254455
Piptatherum miliaceum
John Thomas Howell
1954-8-4
30023
Santa Clara
Cowper Street between University Avenue and Lytton Street, Palo Alto
Comment
RSA98984
Piptatherum miliaceum
J. T. Howell
1954-10-30
30114
Alameda
Arlington Ave. near city limits, Berkeley
Comment
UC1042566
Plagiobothrys chorisianus
John Thomas Howell
1953-5-7
28941
San Benito
3 mi nw San Juan
Comment
CAS-BOT-BC224954
Plagiobothrys hispidulus
John Thomas Howell
1946-7-16
22426
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC224966
Plagiobothrys hispidulus
John Thomas Howell
1962-7-10
38452
Kern
Near Shirley Meadows, Greenhorn Mountains
1981
Comment
CAS-BOT-BC58799
Plagiobothrys mollis var. mollis
John Thomas Howell
1934-6-15
12197
Modoc
Dorris Reservoir, 2 mi. E of Alturas.
Comment
CAS-BOT-BC228490
Plagiobothrys strictus
John Thomas Howell
1926-3-28
1778
Napa
Myrtledale Hot Springs near Calistoga
Comment
CAS-BOT-BC189649
Plagiobothrys torreyi
John Thomas Howell
1924-5-30
357
Mariposa
Wawona
1219
Comment
CAS-BOT-BC230600
Plagiobothrys torreyi
John Thomas Howell
1949-7-23
25656
Tulare
Soldier Lake
3352
Comment
CAS-BOT-BC230609
Plagiobothrys torreyi
John Thomas Howell; Gordon H. True
1968-5-13
44260
Tulare
North Meadow Creek, Kern Plateau
1981
Comment
CAS-BOT-BC230612
Plagiobothrys torreyi
John Thomas Howell; Gordon H. True
1966-7-11
41709
Tulare
Horse Meadow, Kern Plateau
2255
Comment
UC881362
Plagiobothrys undulatus
John Thomas Howell
1937-6-6
13014
Sonoma
Sebastopol
Comment
JEPS37918
Plantago elongata
John Thomas Howell
1934-3-25
11780
Napa
Cuttings Wharf Napa River
Comment
CDA6615
Plantago major
J. T. Howell
1969-7-6
45867
San Francisco
Fort Mason, San Francisco.
0
Comment
RSA40164
Plantago truncata subsp. firma
J. T. Howell
1944-5-21
19500
Marin
Lagunitas Meadows north side of Mount Tamalpais.
244
Comment
RSA751
Plectritis ciliosa subsp. insignis
J. T. Howell
1928-4-14
913
San Bernardino
Aliso Canyon, Rancho Santa Ana.
229
Comment
CAS-BOT-BC326673
Pleurocoronis pluriseta
John Thomas Howell
1977-3-11
52346
San Diego
Southeast of Agua Caliente, Anza Borrego Desert State Park
Comment
CAS-BOT-BC260922
Pleuropogon californicus
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True
1981-5-21
54039
Solano
Jepson Prairie Preserve of The Nature Conservancy in the vicinity of Olcutt Lake about 12 miles south of Dixon
6
Comment
POM273149
Pleuropogon californicus var. californicus
J. T. Howell
1945-5-9
20828
Marin
between Hamilton Field and Ignacio, Marin County
Comment
UCD90098
Pleuropogon hooverianus
John Thomas Howell
1947-4-27
23107
Marin
Ross.
Comment
UC421657
Pluchea odorata var. odorata
John Thomas Howell
1927-9-24
3117
Orange
Santa Ana Canyon
152
Comment
RSA40179
Poa
J. T. Howell
1944-7-16
19813
Glenn
Black Butte
Comment
CAS-BOT-BC255624
Poa annua
John Thomas Howell; Gordon H. True
1970-7-29
47087
Tulare
S end of Cannell Meadow on road to Pine Flat, Kern Plateau
2316
Comment
UC1026500
Poa annua
John Thomas Howell
1950-7-12
25744
Inyo
Summit Creek e of Olancha Pass; Sierra Nevada
2743
Comment
CAS-BOT-BC244348
Poa annua
John Thomas Howell
1959-9-22
34864
Plumas
Drakesbad
1737
Comment
CAS-BOT-BC254779
Poa bolanderi
John Thomas Howell
1939-8-9
15218
Siskiyou
Sky High Valley, Marble Mountains
1828
Comment
CAS-BOT-BC255696
Poa bolanderi
John Thomas Howell
1958-7-21
33701
Fresno
Dougherty Meadow
2834
Comment
CAS-BOT-BC254950
Poa bulbosa
John Thomas Howell
1960-5-2
35248
Mariposa
Coulterville
530
Comment
CAS-BOT-BC246901
Poa nervosa
John Thomas Howell
1946-7-18
22504
Inyo
South side of Mono Pass
3627
Comment
CAS-BOT-BC256053
Poa pratensis
John Thomas Howell
1950-7-15
26921
Tulare
Bakeoven Meadows, South Fork of Kern River, Sierra Nevada
2468
Comment
CAS-BOT-BC247393
Poa pratensis
John Thomas Howell
1960-7-18
35510
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
UC1177121
Poa pratensis subsp. pratensis
John Thomas Howell
1943-5-22
18116
Marin
Fairfax
Comment
CAS-BOT-BC247521
Poa pringlei
John Thomas Howell
1943-7-20
18606
Nevada
Castle Peak
Comment
CAS-BOT-BC255021
Poa secunda
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49521
Lassen
Elysian Valley, W of Janesville
1325
Comment
RSA300137
Poa secunda
J. T. Howell
1967-6-23
42672
Plumas
Canyon of Butterfly Creek just above its mouth
976
Comment
CAS-BOT-BC247088
Poa secunda subsp. juncifolia
John Thomas Howell; Gordon H. True
1971-6-16
47992
Kern
Weldon Meadow
1981
Comment
SEINET7294036
Poa secunda subsp. juncifolia
John Thomas Howell, Gordon H. True
1970-1
47008
Tulare
West side of Big Meadow just south of Pipe Spring.
2377
Comment
UCD92375
Poa secunda subsp. juncifolia
John Thomas Howell
1962-7-9
38348
Kern
Sierra Nevada, Isabella.
762
Comment
CAS-BOT-BC235999
Poa secunda subsp. secunda
John Thomas Howell
1947-8-15
24120
Inyo
Fifth Lake, Big Pine Lakes
3352
Comment
CAS-BOT-BC236375
Poa secunda subsp. secunda
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-26
53048
Calaveras
Ridgetop near Dorrington
1524
Comment
CAS-BOT-BC242987
Poa secunda subsp. secunda
John Thomas Howell; et al.
1967-6-12
2085
Plumas
Butterfly Botanical Area and Vicinity. Area near spring
1127
Comment
CAS-BOT-BC243282
Poa secunda subsp. secunda
John Thomas Howell
1951-7-17
27829
Tulare
Mineral King and vicinity. White Chief Trail
2743
Comment
CAS-BOT-BC244097
Poa secunda subsp. secunda
John Thomas Howell
1953-5-25
29052
Tuolumne
2.5 miles from Keystone on road to Sonora
304
Comment
CAS-BOT-BC244473
Poa secunda subsp. secunda
John Thomas Howell
1956-3-23
31132
Monterey
Salinas Valley, 1 mile S of San Lucas
Comment
CAS-BOT-BC244501
Poa secunda subsp. secunda
John Thomas Howell
1964-4-26
40437
Mariposa
Just SE of Mariposa, on road to Morman Bar
594
Comment
CAS-BOT-BC244516
Poa secunda subsp. secunda
John Thomas Howell
1943-8-8
19182
Mendocino
Anthony Peak, Tehoma-Mendocino County
Comment
CAS-BOT-BC244145
Poa sierrae
John Thomas Howell; Gordon H. True
1970-5-27
46555
El Dorado
In Rubicon River Canyon, NNE of Leonardi Spring
1158
Comment
CAS-BOT-BC6509
Poa sierrae
John Thomas Howell; Gordon H. True
1967-5-9
42204
Plumas
Feather River Canyon, 3.5 mi SW of Belden, Lewisia Rock
609
Comment
CAS-BOT-BC6510
Poa sierrae
John Thomas Howell; Gordon H. True
1967-5-9
42204
Plumas
Feather River Canyon, 3.5 mi SW of Belden, Lewisia Rock
609
Comment
GH24326
Poa sierrae
J. T. Howell & G. H. True
1967-5-9
42204
Unknown
Moist shaded slope in loose rocky soil near Lewisia Rock in the Feather Canyon (North Fork), 3.5 miles southwest of Belden, alt. ca. 2000 feet
Comment
GH361036
Poa sierrae
J. T. Howell
1967-6-23
42740
Unknown
Lewisia Rock, 3.5 miles southwest of Belden, Feather River Canyon
609
Comment
UC710589
Poa stebbinsii
John Thomas Howell
1944-8-12
20379
Tuolumne
Gaylor Lakes
3291
Comment
CAS-BOT-BC244274
Podagrostis humilis
John Thomas Howell
1960-8-18
36063
Tehama
Lassen Volcanic National Park. Bluff Falls
1981
Comment
CAS-BOT-BC218387
Podistera nevadensis
John Thomas Howell
1938-8-11
14542
Tuolumne
Mt. Dana
3657
Comment
UC1988913
Pogogyne douglasii
John Thomas Howell
1929-8-4
4870
Napa
three miles from Pope Valley Store on road to Pope Creek Canyon. Same locality as No. 4278
Comment
GH364821
Polygonum
J. T. Howell
1945-7-8
21284
Unknown
San Antonio Station
Comment
UC1106193
Polygonum aviculare subsp. aviculare
John Thomas Howell
1945-7-15
21291
Marin
Fairfax
Comment
CAS-BOT-BC413963
Polygonum aviculare subsp. aviculare
John Thomas Howell
1924-10-11
678
Alameda
Euclid Avenue, Berkeley
Comment
CAS-BOT-BC414138
Polygonum aviculare subsp. aviculare
John Thomas Howell; Gordon H. True
1970-6-23
46618
Tulare
Cherry Hill Road at Burton Camp, Kern Plateau
1737
Comment
CAS-BOT-BC414143
Polygonum aviculare subsp. aviculare
John Thomas Howell
1952-10-28
28904
Tulare
Eleven Range View Point, Sequoia Park
1584
Comment
CAS-BOT-BC414187
Polygonum aviculare subsp. depressum
John Thomas Howell
1960-8-20
36268
Tehama
Near Lassen Volcanic National Park. Morgan
1463
Comment
CAS-BOT-BC414220
Polygonum aviculare subsp. depressum
John Thomas Howell
1961-9-22
36808
Plumas
Greenville
1088
Comment
RSA26309
Polygonum minimum
J. T. Howell
1941-8-2
16686
Madera
Near Garnet Lake.
2957
Comment
CAS-BOT-BC418557
Polygonum minimum
John Thomas Howell
1946-7-29
s.n.
Inyo
Gem Lake
Comment
CAS-BOT-BC419976
Polygonum polygaloides subsp. kelloggii
John Thomas Howell
1941-8-1
16655
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC420088
Polygonum polygaloides subsp. kelloggii
John Thomas Howell
1950-7-14
26821
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC419922
Polygonum polygaloides subsp. kelloggii
John Thomas Howell
1963-7-10
39742
Alpine
0.5 mile west of Monitor Pass
2529
Comment
CAS-BOT-BC420161
Polygonum sawatchense subsp. sawatchense
John Thomas Howell
1941-8-7
16813
Madera
Near Garnet Lake
2956
Comment
A364804
Polygonum shastense
J. T. Howell
1943-7-21
18663
Unknown
Donner Pass to Mt. Lincoln
Comment
CAS-BOT-BC109257
Polygonum shastense
John Thomas Howell
1943-7-21
18663
Placer
Donner Pass to Mount Lincoln.
Comment
CAS-BOT-BC421036
Polygonum spergulariiforme
John Thomas Howell
1955-7-19
30805
Plumas
Vinton
1505
Comment
CAS-BOT-BC420980
Polygonum spergulariiforme
John Thomas Howell
1947-9-6
24182
Marin
East of Dillons Beach
Comment
CAS-BOT-BC76838
Polypodium glycyrrhiza
John Thomas Howell; Gordon H. True
1967-5-9
42212 A
Plumas
Sierra Nevada - Lewisia Rock, 3.5 miles southwest of Belden, Feather River Canyon
609
Comment
CAS-BOT-BC233236
Polypogon maritimus
John Thomas Howell
1954-5-18
29852
Amador
2 miles NNW of Buena Vista
91
Comment
POM273113
Polypogon maritimus
J. T. Howell
1945-6-22
21218
Lake
Sulphur Banks.
Comment
CAS-BOT-BC72309
Polystichum imbricans subsp. imbricans
John Thomas Howell
1943-8-6
19113
Glenn
Black Butte
Comment
CAS-BOT-BC102706
Populus tremuloides
John Thomas Howell
1960-8-22
36375
Shasta
Anklin Meadows
1889
Comment
CAS-BOT-BC102739
Populus tremuloides
John Thomas Howell
1958-5-27
33475
Inyo
North Fork of Bishop Creek
2468
Comment
CAS-BOT-BC453681
Potamogeton gramineus
John Thomas Howell
1939-8-9
15195
Siskiyou
Sky High Valley, Marble Mts.
1828
Comment
SD149194
Potamogeton natans
John Thomas Howell, Gordon H. True
1969-9-30
46396
Tulare
Salmon Creek, W side of Big Meadow, Kern Plateau
2346
Comment
CAS-BOT-BC453859
Potamogeton nodosus
John Thomas Howell
1947-6-18
23256
Marin
Chileno Valley
Comment
RSA97643
Potamogeton nodosus
J. T. Howell
1950-7-27
27400
Mono
East Walker River at Bridgeport.
1973
Comment
CAS-BOT-BC267228
Potamogeton robbinsii
John Thomas Howell
1947-8-15
24127
Inyo
Big Pine Lakes, Fourth Lakes
3291
Comment
CAS-BOT-BC539528
Potentilla biennis
John Thomas Howell; Gordon H. True
1970-7-29
47119
Tulare
Pine Flat, Kern Plateau
2194
Comment
CAS-BOT-BC540035
Potentilla biennis
John Thomas Howell
1977-8-11
52687
Plumas
Sierra Nevada, Canyon of Little Last Chance Creek, between Chilcoot and Frenchmans Reserovoir
1706
Comment
CAS-BOT-BC143207
Potentilla breweri
John Thomas Howell
1944-8-10
20233
Mono
North slope of Mt. Dana
Comment
CAS-BOT-BC143243
Potentilla flabellifolia
John Thomas Howell
1946-7-15
22404
Inyo
Ruby Lake, Rock Creek Lake Basin
3383
Comment
CAS-BOT-BC141630
Potentilla gracilis var. elmeri
John Thomas Howell
1925-7-2
1366
El Dorado
Between Fallen Leaf Camp and Lake Tahoe
Comment
UC618512
Potentilla gracilis var. elmeri
John Thomas Howell
1938-8-7
14292
Mono
Whiskey Creek
2133
Comment
CAS-BOT-BC141639
Potentilla gracilis var. elmeri
John Thomas Howell
1950-7-25
27336
Tulare
South Fork of Kern River
2468
Comment
CAS-BOT-BC540362
Potentilla gracilis var. fastigiata
John Thomas Howell
1934-7-6
12440
Lassen
Harvey Valley
Comment
CAS-BOT-BC541026
Potentilla gracilis var. fastigiata
John Thomas Howell
1950-7-14
26878
Tulare
Bakeoven Meadow, South Fork of Kern River
2468
Comment
CAS-BOT-BC541072
Potentilla gracilis var. fastigiata
John Thomas Howell; Gordon H. True
1966-7-11
41618
Tulare
Poison Meadow, Kern Plateau
2286
Comment
UC618419
Potentilla grayi
John Thomas Howell
1938-8-13
14568
Mariposa
Lake Tenaya
Comment
CAS-BOT-BC158541
Potentilla pseudosericea
John Thomas Howell
1949-8-5
26063
Inyo
Army Pass
3657
Comment
UC904948
Potentilla pseudosericea
John Thomas Howell
1949-8-5
26063
Inyo
Army Pass Sierra Nevada, Army Pass
3657
Comment
CAS-BOT-BC225021
Poteridium annuum
John Thomas Howell
1934-6-11
11922
Modoc
Parker Creek, Warner Mts.
1584
Comment
CAS-BOT-BC47642
Primula suffrutescens
John Thomas Howell
1942-7-31
17460
Tulare
Above timberline, Mt. Kaweah
Comment
RSA44180
Primula suffrutescens
J. T. Howell
1947-8-10
23974
Inyo
Near Sam Mack Lake, Big Pine Lakes
3659
Comment
SD149134
Prunella vulgaris var. lanceolata
John Thomas Howell, Gardon H. True and Margaret Williams
1973-6-28
49443
Lassen
Elysian Valley, west of Janesville.
1326
Comment
CAS-BOT-BC158594
Prunus
John Thomas Howell
1959-9-24
34940
Plumas
Butterfly Creek near mouth
Comment
UC861018
Prunus emarginata
John Thomas Howell
1939-8-4
15029
Siskiyou
between Elk Mountain and Marble Rim (Marble Mountains); Marble Mountains
Comment
CAS-BOT-BC151154
Prunus subcordata
John Thomas Howell
1962-9-26
38941
Kern
5.5 miles east of Glennville - Greenhorn Mountains, Sierra Nevada
1371
Comment
CAS-BOT-BC151166
Prunus subcordata
John Thomas Howell
1965-4-26
41149
Madera
3 miles south of Oakhurst - Sierra Nevada
914
Comment
RSA99710
Prunus subcordata
J. T. Howell
1953-5-24
29014 A
Tuolumne
Sonora Pass Road between Sugar Pine and Pinecrest.
Comment
CAS-BOT-BC151239
Prunus virginiana var. demissa
John Thomas Howell
1937-7-21
13164
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC154853
Prunus virginiana var. demissa
John Thomas Howell
1924-8-10
610
Plumas
Crescent Mills
1219
Comment
CAS-BOT-BC356403
Pseudognaphalium beneolens
John Thomas Howell
1970-9-22
47245
Kern
Along Kern River between Kernville and River Kern
822
Comment
CAS-BOT-BC356637
Pseudognaphalium biolettii
John Thomas Howell; R. C. Barneby
1954-5-8
29216
Tulare
Middle Fork Tule River Canyon, 5 miles above Springville
548
Comment
CAS-BOT-BC356688
Pseudognaphalium californicum
John Thomas Howell
1962-7-7
38174
Kern
Kern River Canyon
533
Comment
CAS-BOT-BC356737
Pseudognaphalium californicum
John Thomas Howell
1943-5-9
17956
Marin
Black Canyon, San Rafael hills
Comment
CAS-BOT-BC356879
Pseudognaphalium californicum
John Thomas Howell
1931-4-12
6284
Santa Barbara
Cochie Canyon, Santa Cruz Island
Comment
CAS-BOT-BC356953
Pseudognaphalium canescens
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-10
54420
Amador
Peddler Hill, Carson Pass road
2084
Comment
CAS-BOT-BC357088
Pseudognaphalium luteoalbum
John Thomas Howell
1936-9-4
12890
San Francisco
In Sutro Forest, San Francisco
Comment
UCD135083
Pseudognaphalium luteoalbum
John Thomas Howell
1943-6-20
18243
San Francisco
Concert Valley, Golden Gate Park, San Francisco.
Comment
CAS-BOT-BC357318
Pseudognaphalium microcephalum
John Thomas Howell
1930-10-25
5683
Monterey
Canyon of the Arroyo Seco River, Santa Lucia Mts.
Comment
CAS-BOT-BC361511
Pseudognaphalium stramineum
John Thomas Howell
1957-5-17
32239
San Francisco
San Francisco. Bayview Hills
Comment
CAS-BOT-BC357592
Pseudognaphalium stramineum
John Thomas Howell
1925-11-7
1556
Contra Costa
San Leandro Canyon, Oakland Hills
Comment
CAS-BOT-BC361664
Pseudognaphalium thermale
John Thomas Howell
1963-8-20
40202
Inyo
Whitney Portal road
2346
Comment
CAS-BOT-BC239801
Pseudoroegneria spicata
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50693
Lassen
South and southeast of Diamond Mt.
2286
Comment
CAS-BOT-BC361764
Psilocarphus brevissimus var. brevissimus
John Thomas Howell
1926-6-18
2035
Merced
Merced plains, 3 miles sw. of Merced
Comment
CAS-BOT-BC361863
Psilocarphus oregonus
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
53943
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on the west slope of Sonoma Mountain
457
Comment
CAS-BOT-BC72607
Pteridium aquilinum
John Thomas Howell
1960-8-22
36386
Shasta
Anklin Meadows
1889
Comment
CAS-BOT-BC72639
Pteridium aquilinum
John Thomas Howell
1956-9-9
31861
San Francisco
se. end of Lake Merced
Comment
CAS-BOT-BC239754
Ptilagrostis kingii
John Thomas Howell
1947-8-4
23722
Inyo
Fifth Lake, Big Pine Lakes
3352
Comment
SEINET7614795
Puccinellia nutkaensis
J. T. Howell
1945-8-19
21434
Marin
Head of Drake's Bay
Comment
CAS-BOT-BC147851
Purshia tridentata var. tridentata
John Thomas Howell
1950-7-28
27416
Mono
[Leevining] Lee Vining Canyon
2255
Comment
CAS-BOT-BC147878
Purshia tridentata var. tridentata
John Thomas Howell; Gordon True; Walter Knight; Irja Knight
1967-7-10
2207
Plumas
Mouth of Butterfly Creek
883
Comment
CAS-BOT-BC465995
Pyrola minor
John Thomas Howell
1942-8-5
17743
Tulare
Kaweah Meadows, Chagoopa Plateau
Comment
POM304572
Pyrrocoma apargioides
J. T. Howell
1941-7-31
16609
Madera
Ridge NW of San Joaquin Mt.
Comment
RSA165
Quercus X acutidens
J. T. Howell
1927-8-7
602
San Diego
Near Dulzura Ranch.
335
Comment
CAS-BOT-BC94696
Quercus X howellii
John Thomas Howell
1955-6-15
30495
Butte
6 miles from Paradise on road to Pentz
426
Comment
CAS-BOT-BC94704
Quercus X howellii
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary Wells
1981-5-14
53936
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles NE of Penngrove on the W slope of Sonoma Mountain
457
Comment
CAS-BOT-BC104195
Quercus X morehus
John Thomas Howell
1965-4-26
41162
Madera
Sierra Nevada. 3 miles S of Oakhurst
914
Comment
UCD46972
Quercus X morehus
John Thomas Howell
1965-4-26
41162
Madera
In zone of granitic rocks, 3 miles S of Oakhurst.
914
Comment
CAS-BOT-BC104417
Quercus X subconvexa
John Thomas Howell
1941-4-17
s.n.
Marin
Wind-swept hills above Tiburon
Comment
UC1177408
Quercus X subconvexa
John Thomas Howell
1941-7-6
16364
Marin
Hidden Lake Mt. Tamalpais
Comment
CAS-BOT-BC61677
Quercus agrifolia
John Thomas Howell
1952-10-20
28860
Santa Barbara
La Purisima Ridge
Comment
UCD45037
Quercus agrifolia
John Thomas Howell
1963-8-7
40089
Monterey
Mustang Grade between Mustang Summit and Priest Valley. With 40088.
Comment
RSA158
Quercus agrifolia var. oxyadenia
J. T. Howell
1927-8-7
600
San Diego
Dulzura Creek.
305
Comment Read comments Nov 14 2016
RSA162
Quercus berberidifolia
J. T. Howell
1927-8-2
576
Riverside
Road to Hemet, Mt. San Jacinto.
1372
Comment
CAS-BOT-BC62392
Quercus chrysolepis
John Thomas Howell
1927-7-9
2701
San Bernardino
Whiskey Springs, Cushenbury Road, N ridge of San Bernardino Mts.
1652
Comment
CAS-BOT-BC62584
Quercus chrysolepis
John Thomas Howell; Gordon H. True
1971-7-15
47752
Kern
Sierra Nevada. Flying Dutchman Creek canyon on Havilah - Mt. Breckendrige road
1188
Comment
CAS-BOT-BC62666
Quercus chrysolepis
John Thomas Howell
1940-7-28
15607
Fresno
Bubbs Creek - zigzags east of Kings Canyon
Comment
CAS-BOT-BC62694
Quercus chrysolepis
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52787
Calaveras
Camp Nine Road northeast of Vallecito
609
Comment
CAS-BOT-BC86562
Quercus chrysolepis
John Thomas Howell; Gordon H. True
1968-5-14
44373
Tulare
Cherry Hill Road at Rincon Trail, Brush Creek Canyon, Kern Plateau
1463
Comment
SFV8714
Quercus chrysolepis
J. T. Howell
1963-8-21
40216
Inyo
Sierra Nevada Whitney Portal Road.
2256
Comment
CAS-BOT-BC86103
Quercus dumosa
John Thomas Howell
1955-6-15
30497 A
Butte
6 miles from paradise on road to Pentz
426
Comment
CAS-BOT-BC86117
Quercus dumosa
John Thomas Howell
1955-6-15
30492
Butte
6 miles from Paradise on road to Pentz
426
Comment
CAS-BOT-BC86386
Quercus dumosa
John Thomas Howell
1928-3-20
3476
Los Angeles
Hills E of Vermont Canyon, Griffith Park
Comment
CAS-BOT-BC86434
Quercus dumosa
John Thomas Howell
1933-8-27
11647
Napa
E of Chiles Valley on road to Winters, Napa Range
Comment
CAS-BOT-BC79759
Quercus durata
John Thomas Howell
1927-10-16
3153
Los Angeles
on the trail between Santa Anita Canyon and Sierra Madre, San Gabriel Mts.
Comment
UCD45906
Quercus durata var. durata
John Thomas Howell
1959-9-21
34791
Plumas
El. 2500 feet, Plumas County.
762
Comment
CAS-BOT-BC94674
Quercus garryana
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-5-20
53503
Trinity
One-eye Flat, about 1.7 miles N of Carrville, Trinity River Canyon
755
Comment
CAS-BOT-BC94339
Quercus garryana var. breweri
John Thomas Howell; Gordon H. True
1971-6-15
47750
Kern
Flying Dutchman Creek canyon on Havilah Mt. Breckenridge road
1188
Comment
CAS-BOT-BC105246
Quercus kelloggii
John Thomas Howell
1976-7-19
51946
Lassen
SW of Susanville on Gold Run Road
1341
Comment
CAS-BOT-BC105292
Quercus kelloggii
John Thomas Howell
1927-8-23
3044
Napa
Hills on N ridge of Chiles Valley, Napa Range
213
Comment
CAS-BOT-BC62880
Quercus lobata
John Thomas Howell
1930-10-19
5608
Napa
Pope Valley School, Pope valley
Comment
UC1177323
Quercus lobata
John Thomas Howell
1947-5-18
Marin
Fairfax Hills
Comment
POM183381
Quercus parvula var. parvula
J. T. Howell
1931-4-13
6323
Santa Barbara
Santa Cruz Island. near west end.
Comment
CAS-BOT-BC104605
Quercus vacciniifolia
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-26
54401
Plumas
Sierra Nevada, Basalt Formation, Walker Plain, about 8 miles SW of Bucks Lake on road to Oroville
1554
Comment
CAS-BOT-BC104654
Quercus vacciniifolia
John Thomas Howell
1944-8-14
20498
Tuolumne
Glen Aulin
Comment
UCD47425
Quercus vacciniifolia
John Thomas Howell; Gordon H. True
1969-6-25
45846
Sierra
3 miles north of Bassetts on road to Gold Lake, Sierra County.
1950
Comment
UCD47453
Quercus vacciniifolia
John Thomas Howell
1969-9-15
46224
Tuolumne
Near Cow Creek, 5 miles north of Strawberry, Tuolumne Co.
2667
Comment
CAS-BOT-BC104697
Quercus wislizeni
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52747
Calaveras
Camp Nine Road noertheast of Vallecito
609
Comment
CAS-BOT-BC104881
Quercus wislizeni
John Thomas Howell
1927-8-22
3033
Marin
on S side of Mt. Tamalpais above Mill Valley
152
Comment
UCD47633
Quercus wislizeni
John Thomas Howell; Gordon H. True
1967-5-30
42428
Tulare
Slopes west of Lamont Meadow, Kern Plateau, Tulare County.
1706
Comment
CAS-BOT-BC362419
Rafinesquia
John Thomas Howell
1928-3-24
3492
San Diego
Near Palm Wash, w. Colorado Desert
Comment
CAS-BOT-BC379434
Ranunculus alismifolius var. hartwegii
John Thomas Howell
1943-7-17
8490
Placer
west side of Donner Pass near Norden, Boreal Ridge
2134
Comment
RSA305
Ranunculus cymbalaria var. saximontanus
J. T. Howell
1927-7-19
3769
Orange
Santa Ana River bottom, Rancho Santa Ana.
152
Comment
UC1176747
Ranunculus pusillus
John Thomas Howell
1946-6-16
22082
Marin
Olema Marshes
Comment
RSA98987
Ranunculus sceleratus var. multifidus
J. T. Howell
1953-5-22
28970
Stanislaus
3 miles from Oakdale on Manteca road
Comment
CAS-BOT-BC362893
Rhagadiolus stellatus
John Thomas Howell
1980-5-15
53451
Napa
Oakville Grade sw. of Oakville
152
Comment
CAS-BOT-BC59565
Rhamnus
John Thomas Howell
1976-5-19
51770
Kern
Sierra Nevada - Greenhorn Mountains - between Isabella Dam and Keysville
822
Comment
CAS-BOT-BC170448
Rhus integrifolia
John Thomas Howell
1928-3-2
3367
Los Angeles
Griffith Park
Comment
CAS-BOT-BC111866
Rhynchospora alba
John Thomas Howell; Hans Leschke
1945-5-30
20896
Sonoma
Pitkin Marsh
Comment
CAS-BOT-BC111908
Rhynchospora capitellata
John Thomas Howell
1936-8-27
12845
Trinity
Near Trinity Center
Comment
UCR89360
Ribes amarum
J. T. Howell
1960-5-2
35244
Mariposa
Sierra Nevada Mtns, Serpentine area NW of Coulterville
Comment
CAS-BOT-BC92459
Ribes aureum var. gracillimum
John Thomas Howell
1963-6-22
39565
Monterey
Priest Valley.
Comment
A380218
Ribes indecorum
J. T. Howell
1929-3-2
4100
Unknown
San Gabriel Wash, 2 miles s. of Azusa
Comment Read comments Jul 28 2014
CAS-BOT-BC168886
Ribes lobbii
John Thomas Howell; Alice Eastwood
1941-7-9
9834
Tehama
Near Government Flat
Comment
CAS-BOT-BC168926
Ribes malvaceum
John Thomas Howell
1954-11-3
30138
Monterey
Arroyo Seco River Canyon, Santa Lucia Mts.
Comment
CAS-BOT-BC168957
Ribes malvaceum
John Thomas Howell
1931-3-29
6027
San Benito
Hernandez
Comment
CAS-BOT-BC209252
Ribes menziesii
John Thomas Howell
1950-10-11
27469
Marin
Bear Valley
Comment
CAS-BOT-BC212585
Ribes montigenum
John Thomas Howell
1960-8-19
36149
Tehama
Brokeoff Mountain Trail
2682
Comment
CAS-BOT-BC212612
Ribes montigenum
John Thomas Howell
1948-7-28
25120
Tulare
Center Basin
3657
Comment
JEPS33678
Ribes roezlii
John Thomas Howell
1923-5-25
16
Mariposa
Wawona
1219
Comment
CAS-BOT-BC199009
Ribes roezlii var. roezlii
John Thomas Howell
1962-7-8
38257
Kern
Black Mt. south side - Greenhorn Mountains, Sierra Nevada
1432
Comment
CAS-BOT-BC199012
Ribes roezlii var. roezlii
John Thomas Howell; Gordon H. True
1971-6-16
48007
Kern
1.5 miles south of Piute Peak, Sierra Nevada
2316
Comment
CAS-BOT-BC168677
Ribes speciosum
John Thomas Howell
1928-3-4
3380
Los Angeles
Santa Monica Mountains, ne. of Pacific Palisades
Comment
RSA351
Ribes speciosum
J. T. Howell
1928-3-18
888
Orange
Aliso Canon [Canyon], Rancho Santa Ana.
229
Comment
CAS-BOT-BC173877
Ribes velutinum
John Thomas Howell
1958-5-27
33480
Inyo
North Fork of Bishop Creek
2438
Comment
A380990
Ribes victoris
J. T. Howell
1942-7-12
17033
Unknown
Above Lake Lagunitas (type locality), Northside Trail, Mt. Tamalpais
Comment
CAS-BOT-BC168748
Ribes victoris
John Thomas Howell
1943-3-7
17884
Marin
Hills northeast of San Rafael
Comment
POM261634
Ribes victoris
J. T. Howell
1940-5-19
s.n.
Napa
Upper St. Helena Creek.
Comment
POM304546
Ribes victoris
J. T. Howell
1942-7-12
s.n.
Marin
Above Lake Lagunitas (type locality), Northside Trail, Mount Tamalpais
Comment
CAS-BOT-BC168811
Ribes viscosissimum
John Thomas Howell
1960-8-21
36305
Tehama
Near Sulphur Works entrance, Lassen Volcanic National park
1996
Comment
CAS-BOT-BC362933
Rigiopappus leptocladus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-29
53423
Siskiyou
East side of Scott Valley, 10 miles south of Fort Jones on road to Callahan
853
Comment
RSA7686
Romanzoffia californica
J. T. Howell
1933-4-30
11195
Marin
North side of Mt. Tamalpais.
Comment
RSA315
Romneya coulteri
J. T. Howell
1928-7-7
1036
Riverside
Santa Ana Mts. above Glen Ivy.
610
Comment
CAS-BOT-BC74516
Rorippa curvisiliqua
John Thomas Howell
1970-9-22
47262
Kern
Sierra Nevada. Along Kern River between Kernville and River Kern.
822
Comment
CAS-BOT-BC74658
Rorippa curvisiliqua
John Thomas Howell
1939-8-5
15064
Siskiyou
Spirit Lake, Marble Mountains.
1828
Comment
CAS-BOT-BC74665
Rorippa curvisiliqua
John Thomas Howell
1969-9-13
46109
Sierra
Sierra Nevada. Little Truckee River near outlet of Webber Lake.
2042
Comment
CAS-BOT-BC95039
Rorippa palustris var. hispida
John Thomas Howell
1934-6-15
12187
Modoc
Alturas.
Comment
CAS-BOT-BC148082
Rosa bridgesii
John Thomas Howell
1973-10-16
50255
Tulare
Giant Forest, Sierra Nevada
2011
Comment
CAS-BOT-BC148171
Rosa gymnocarpa
John Thomas Howell; Walter Knight; Irja Knight; Gordon H. True
1969-6-24
2627
Plumas
Ner Overnight Camp - Butterfly Botanical Area and vicnity
1097
Comment
UCD113899
Rosa rubiginosa
John Thomas Howell
1953-5-23
28992
Tuolumne
Sierra Nevada. Columbia.
640
Comment
CAS-BOT-BC146925
Rosa woodsii
John Thomas Howell
1947-7-18
23430
Los Angeles
Big Pines, San Gabriel Mts.
2103
Comment
CAS-BOT-BC149768
Rosa woodsii subsp. ultramontana
John Thomas Howell; Gordon H. True
1971-7-14
48423
Tulare
North Fork of Manter Creek, Kern Plateau
2225
Comment
CAS-BOT-BC274270
Rostraria cristata
John Thomas Howell; R. C. Barneby
1954-5-9
29236
Tulare
7 miles north of Woodlake
Comment
RSA43312
Rostraria cristata
J. T. Howell
1948-6-15
24376
San Luis Obispo
Gillis Canyon, SE of Shandon
457
Comment
CAS-BOT-BC156623
Rubus bifrons
John Thomas Howell
1943-8-29
19311
Marin
Summit (Avenue) Ridge, Mill Valley
Comment
CAS-BOT-BC433197
Rubus flagellaris
John Thomas Howell
1961-9-23
36839
Plumas
Indian Valley
1082
Comment
CAS-BOT-BC148380
Rubus leucodermis
John Thomas Howell
1958-7-30
34130
Fresno
Simpson Meadow, Middle Fork of the Kings River - Sierra Nevada
1828
Comment
CAS-BOT-BC147172
Rubus parviflorus
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49479
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC147365
Rubus pensilvanicus
John Thomas Howell
1963-5-18
39291
Monterey
2.5 miles s. of Aromas
60
Comment
CAS-BOT-BC158840
Rubus ursinus
John Thomas Howell
1938-6-19
13918
Marin
Azalea Flat, Mt. Tamalpais
Comment
CAS-BOT-BC158849
Rubus ursinus
John Thomas Howell
1938-6-19
13929
Marin
Near Rattlesnake, Mt. Tamalpais
Comment
CAS-BOT-BC363137
Rudbeckia californica
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-10
54421
Amador
Peddler Hill, Carson Pass road
2084
Comment
CAS-BOT-BC421937
Rumex acetosella
John Thomas Howell
1962-7-11
38588
Kern
Shirley Meadows, Greenhorn Mountains
2011
Comment
CAS-BOT-BC421973
Rumex acetosella
John Thomas Howell
1923-6-5
28
Mariposa
Wawona Valley
1219
Comment
JEPS58028
Rumex acetosella
John T. Howell
1923-6-5
28
Mariposa
near Hotel Wawona; Wawona Valley
Comment
CAS-BOT-BC422201
Rumex californicus
John Thomas Howell
1942-8-1
17540
Tulare
Sky Parlor Meadow, Chagoopa Plateau
Comment
CAS-BOT-BC433902
Rumex salicifolius
John Thomas Howell
1962-7-8
38295
Kern
1.5 miles southeast of Summit, Greenhorn Mountains
1524
Comment
CAS-BOT-BC433931
Rumex salicifolius
John Thomas Howell
1946-6-30
22136
Marin
Rodeo Lagoon
Comment
CAS-BOT-BC434083
Rumex transitorius
John Thomas Howell
1956-7-1
31647
San Francisco
Front and Vallejo streets, San Francisco
Comment
CAS-BOT-BC434313
Rumex triangulivalvis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-26
54398
Plumas
Haskins Valley just south of Bucks Lake.
1572
Comment
CAS-BOT-BC109418
Rumex venosus
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49231
Lassen
Sierra Nevada. On Highway 395 northwest of Doyle on road to Milford.
1280
Comment
CAS-BOT-BC132775
Salix arctica
John Thomas Howell
1949-8-12
26237
Inyo
Cottonwood Lakes
3383
Comment
CAS-BOT-BC132824
Salix arctica
John Thomas Howell; Gordon H. True
4400
Mono
Virginia Lakes basin ca. 3 1/4 miles southwest of Conway Summit, above Cooney Lake
2956
Comment
CAS-BOT-BC103197
Salix bonplandiana
John Thomas Howell
1963-8-5
39919
Monterey
Along Watsonville-San Juan Road, about 2 miles south of Aromas
Comment
GH382389
Salix bonplandiana
J. T. Howell
1960-3-25
35167
Unknown
10 miles east of Onyx
Comment
CAS-BOT-BC102815
Salix boothii
John Thomas Howell
1939-8-7
15132 A
Siskiyou
Sky High Valley, Marble Mts.
1828
Comment
POM362894
Salix boothii
J. T. Howell
1947-8-16
24170
Inyo
Big Pine Creek, N. Fork.
2622
Comment
CAS-BOT-BC102877
Salix breweri
John Thomas Howell
1931-4-3
6149 B
Lake
Butts Valley Road to Middletown, 5 miles from Aetna Springs
Comment
CAS-BOT-BC108607
Salix drummondiana
John Thomas Howell
1958-5-24
33260
Inyo
Whitney Portal - Sierra Nevada
2529
Comment
A382548
Salix eastwoodiae
J. T. Howell
1944-8-16
20615
Unknown
Mono Pass
Comment
CAS-BOT-BC103876
Salix exigua
John Thomas Howell; H. Keith Wagnon
1980-5-26
53592
Plumas
North Fork of Feather River between the mouth of East Branch and Caribou
792
Comment
CAS-BOT-BC107981
Salix exigua
John Thomas Howell; Gordon H. True
1966-7-10
41592
Tuolumne
On bank of Kern River at Roads End - Sierra Nevada
1066
Comment
CAS-BOT-BC125193
Salix lasiandra var. lasiandra
John Thomas Howell
1925-5-28
1097
El Dorado
Emerald Bay Camp on strand, Lake Tahoe
1889
Comment
CAS-BOT-BC125516
Salix lasiandra var. lasiandra
John Thomas Howell
1960-6-6
35313
Tulare
General Grant Ranger Station
1950
Comment
CAS-BOT-BC128093
Salix lasiandra var. lasiandra
John Thomas Howell
1964-4-18
40436
Monterey
Robinson Canyon - Santa Lucia Mountains
Comment
CAS-BOT-BC128150
Salix lasiandra var. lasiandra
John Thomas Howell
1980-9-8
53897
Marin
Between Alpine and Bon Tempe Lakes
Comment
CAS-BOT-BC107160
Salix lasiolepis var. bigelovii
John Thomas Howell; T. C. Fuller
1981-6-25
54353
Plumas
4.8 miles northwest of Antelope Reservior - Sierra Nevada
1661
Comment
CAS-BOT-BC107338
Salix lasiolepis var. bigelovii
John Thomas Howell
1963-8-5
39920
Monterey
Along Watsonville-San Juan Road, about 2 miles south of Aromas
Comment
CAS-BOT-BC128325
Salix lasiolepis var. lasiolepis
John Thomas Howell
1955-6-12
30318
Tehama
Flood bed of Dibble Creek, 1.5 miles north of Red Bluff
91
Comment
CAS-BOT-BC128526
Salix lasiolepis var. lasiolepis
John Thomas Howell; Gordon H. True
1971-6-16
47968
Kern
Meadow in Jeffrey pine forest, Claraville - Sierra Nevada
1920
Comment
CAS-BOT-BC124605
Salix lemmonii
John Thomas Howell
1925-5-28
1098
El Dorado
Emerald Bay Camp, Lake Tahoe
1889
Comment
RSA503331
Salix lemmonii
J. T. Howell
1969-8-28
46024
Tulare
Mineral King.
2378
Comment
UC846412
Salix lemmonii
John Thomas Howell
1938-8-10
14486
Mono
Minaret Summit
Comment
GH383929
Salix lemmonii
J. T. Howell & G. H. True
1968-7-15
4389
Unknown
Just west of Sonora Pass, on Hwy. 108
2804
Comment
NY187800
Salix lucida subsp. caudata
J. T. Howell
1973-5-12
49221
Lassen
Elysian Valley northwest of Janesville
1325.9
Comment
CAS-BOT-BC129385
Salix melanopsis
John Thomas Howell; Gordon H. True
1967-7-9
43253
Plumas
North Fork of Feather River 3 miles southwest of Caribou - Sierra Nevada
853
Comment
SBBG41736
Salix melanopsis
J. T. Howell
1970-3-31
46496
Monterey
Carmel Valley
Comment
A384328
Salix orestera
J. T. Howell
1943-7-15
18351
Unknown
West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC125762
Salix orestera
John Thomas Howell
1941-8-6
16782 A
Madera
Headwaters of Shadow Creek se. of Mt. Ritter
Comment
CAS-BOT-BC125800
Salix orestera
John Thomas Howell
1944-8-16
20640
Mono
Mono Pass
Comment
CAS-BOT-BC125804
Salix orestera
John Thomas Howell
1944-8-10
20205
Mono
Tioga Pass
Comment
CAS-BOT-BC129299
Salix orestera
John Thomas Howell
1958-5-24
33265
Inyo
Whitney Portal - Sierra Nevada
2529
Comment
CAS-BOT-BC126148
Salix scouleriana
John Thomas Howell
1939-8-5
15080
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
CAS-BOT-BC129033
Salix scouleriana
John Thomas Howell
1961-6-20
36540
Shasta
Lassen Highway at east edge of Chaos Jumbles - Lassen Volcanic National Park
Comment
CAS-BOT-BC129108
Salix scouleriana
John Thomas Howell
1950-7-12
26720
Inyo
Jeffrey pine belt, Sage Flat to Olancha Pass
2743
Comment
CAS-BOT-BC126428
Salix sitchensis
John Thomas Howell
1943-7-4
18263
Marin
Ledum Swamp on road to Pt. Reyes
Comment
CAS-BOT-BC126466
Salix sitchensis
John Thomas Howell
1954-11-3
30125
Monterey
Santa Lucia Memorial Park, Arroyo Seco River
Comment
CAS-BOT-BC175954
Salpichroa origanifolia
John Thomas Howell
1944-9-16
20740
Marin
Cascade Drive, Mill Valley
Comment
CAS-BOT-BC176908
Salsola tragus
John Thomas Howell
1960-6-5
35288
Merced
Delhi
36
Comment
CAS-BOT-BC220718
Salvia
John Thomas Howell
1931-3-19
5873
Fresno
Near Oil Fields
Comment
CAS-BOT-BC214299
Salvia dorrii var. pilosa
John Thomas Howell
1930-5-13
5004
Kern
East side of Walker Pass
1371
Comment
CAS-BOT-BC238846
Sambucus nigra subsp. caerulea
John Thomas Howell
1961-6-21
36649
Plumas
Greenville
1097
Comment
UC691880
Sanicula saxatilis
J. T. Howell
1942-5-24
16969
Contra Costa
Mount Diablo, Eagle Point Mount Diablo; , Eagle Point
Comment
CAS-BOT-BC466321
Sarcodes sanguinea
John Thomas Howell
1973-7-10
49786
Lassen
Sierra Nevada, Fredonyer Pass
1737
Comment
CAS-BOT-BC283128
Schedonorus arundinaceus
John Thomas Howell
1964-6-30
40880
San Luis Obispo
Cambria
Comment
CAS-BOT-BC283638
Schedonorus pratensis
John Thomas Howell
1956-5-12
31387
San Francisco
Vacant ground, Third and Gilman Sts, San Francisco
Comment
CAS-BOT-BC111310
Schoenoplectus acutus var. occidentalis
John Thomas Howell
1939-9-10
s.n.
Marin
Stinson Beach
Comment
CAS-BOT-BC111314
Schoenoplectus acutus var. occidentalis
John Thomas Howell
1946-6-30
22169
Marin
Rodeo Lagoon
Comment
CAS-BOT-BC111467
Schoenoplectus americanus
John Thomas Howell
1963-7-10
39677
Alpine
Mineralized soil of bog at Grover Hot Springs
1798
Comment
CAS-BOT-BC111217
Scirpus
John Thomas Howell
1977-8-2
52461
Calaveras
Transition Zone forest just east of Big Meadow on Ebbetts Pass Road.
1996
Comment
CAS-BOT-BC110900
Scirpus microcarpus
John Thomas Howell
1946-9-1
22965
El Dorado
Echo Summit
Comment
CAS-BOT-BC110912
Scirpus microcarpus
John Thomas Howell
1940-7-28
15645
Fresno
Near Sphinx Creek
Comment
CAS-BOT-BC240030
Scribneria bolanderi
John Thomas Howell
1955-6-14
30425
Shasta
East of Whiskeytown
Comment
GH361130
Scribneria bolanderi
J. T. Howell
1946-5-12
21776
Unknown
South end of Carson Ridge
Comment
CAS-BOT-BC240011
Scribneria bolanderi
John Thomas Howell
1945-4-29
20791
Marin
West of Camp Handy, Mt. Tamalpais
Comment
CAS-BOT-BC61500
Sedum lanceolatum
John Thomas Howell; Gordon H. True
1970-8-10
6156 A
Nevada
Cave lake just south of Lindsey Lakes on north slope of Fall Creek Mt.
2072
Comment
CAS-BOT-BC69084
Sedum lanceolatum
John Thomas Howell
1944-8-12
20416
Tuolumne
Gaylon Lakes,
3291
Comment
SEINET179622
Selaginella bigelovii
J. T. Howell
1927-7-22
2834
Orange
Claymine Canyon Santa Ana Mtns
183
Comment
CAS-BOT-BC69685
Selaginella watsonii
John Thomas Howell
1942-7-31
17492
Tulare
Mt. Kaweah.
3962
Comment
CAS-BOT-BC62234
Selaginella watsonii
John Thomas Howell
1941-8-8
16869
Mono
San Joaquin Mt.
Comment
CAS-BOT-BC363328
Senecio aronicoides
John Thomas Howell
1948-5-22
24306
Marin
East Peak, near top, Mt. Tamalpais
Comment
CAS-BOT-BC363713
Senecio hydrophilus
John Thomas Howell
1938-8-7
14354
Mono
Crooked Creek
2042
Comment
CAS-BOT-BC50258
Senecio integerrimus var. exaltatus
John Thomas Howell
1934-6-11
11950
Modoc
Parker Creek, Warner Mountains
1584
Comment
CAS-BOT-BC333016
Senecio scorzonella
John Thomas Howell
1942-8-6
17766 A
Tulare
Little Five Lakes Basin
Comment
CAS-BOT-BC333032
Senecio scorzonella
John Thomas Howell
1946-7-14
22235
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC332901
Senecio spartioides
John Thomas Howell
1950-8-29
27462
Mono
Summit between Crestview and Mono Lake, Sierra Nevada
2438
Comment
CAS-BOT-BC332932
Senecio spartioides
John Thomas Howell
1947-8-3
23684
Inyo
Big Pine Creek
2743
Comment
RSA201454
Sequoia sempervirens
J. T. Howell
1957-2-3
32020
Marin
Fern Canyon, Mt. Tamalpais
Comment
CAS-BOT-BC10496
Sequoiadendron giganteum
John Thomas Howell
1927-8-30
3083
Tulare
Giant Forest, Sequoia National Park
1981
Comment
CAS-BOT-BC243544
Setaria parviflora
John Thomas Howell
1946-9-8
22997
Marin
Phoenix Lake, Mt. Tamalpais
Comment
CAS-BOT-BC213135
Sidalcea
John Thomas Howell
1961-6-21
36604
Plumas
Greenville, Sierra Nevada
1097
Comment
CAS-BOT-BC205537
Sidalcea hickmanii subsp. viridis
John Thomas Howell; Antonio Krapovickas
1954-6-23
30005
Marin
Carson Ridge
Comment
RSA127567
Sidalcea hickmanii subsp. viridis
J. T. Howell
1954-6-23
s.n.
Marin
Carson Ridge
Comment
UC517485
Sidalcea malviflora subsp. malviflora
John Thomas Howell
1933-4-9
10974
San Mateo
2 mi n Pigeon Pt.; n of Pigeon Pt.
Comment
CAS-BOT-BC213164
Sidalcea oregana subsp. hydrophila
John Thomas Howell
1943-8-4
19024
Glenn
Summit ridge N. of Black Butte
Comment
CAS-BOT-BC384390
Silene bernardina
John Thomas Howell; Gordon H. True
1967-8-9
43638
Tulare
About 2.5 miles north of Blackrock Guard Station on Monache Jeep Trail. Kern Plateau
2682
Comment
CAS-BOT-BC384432
Silene coronaria
John Thomas Howell
1966-7-28
42006
Plumas
5 miles north of Quincy on road to Keddie
Comment
CAS-BOT-BC385888
Silene douglasii
John Thomas Howell
1925-7-2
1313
El Dorado
Between Fallen Leaf Camp and Glen Alpine Lodge, Lake Tahoe region
Comment
CAS-BOT-BC392500
Silene gallica
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
53953
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngove on the west slope of Sonoma Mountain.
457
Comment
CAS-BOT-BC389091
Silene laciniata subsp. californica
John Thomas Howell; Gordon H. True
1971-6-17
48061
Kern
Bodfish Grove of Piute Cypress, 2 miles east of Bodfish Gap
1432
Comment
NY452568
Silene lemmonii
J. T. Howell
1934-6-11
11958
Modoc
Parker Creek, Warner Mountains
1585.0
Comment
RSA95419
Silene occidentalis
J. T. Howell
1951-6-27
27557
Plumas
Johnsville; Sierra Nevada
1585
Comment
CAS-BOT-BC389790
Silene sargentii
John Thomas Howell
1949-8-5
26070
Inyo
Army Pass
3657
Comment
RSA220026
Silene scouleri
J. T. Howell
1957-6-30
32799
San Francisco
Summit ridge, Bayview Hills.
Comment
RSA201484
Silene verecunda subsp. platyota
J. T. Howell
1958-7-22
33713
Fresno
Simpson Meadow, Middle Fork of the Kings River.
1829
Comment
UC1347176
Sisymbrium orientale
John Thomas Howell
1937-8-13
San Francisco
San Francisco, on Masonic Avenue San Francisco
Comment
UC750588
Sisymbrium orientale
John Thomas Howell
1946-5-11
21759
San Francisco
San Francisco, Duboce and Market Streets San Francisco
Comment
CAS-BOT-BC75431
Sisymbrium orientale
John Thomas Howell
1940-5-27
s.n.
San Francisco
San Francisco on Masonic Avenue near Geary Street.
Comment
OBI14951
Sisymbrium orientale
John Thomas Howell
1948-6-14
24338
Monterey
Between Gonzales and Soledad
Comment
CAS-BOT-BC156775
Solanum umbelliferum
J. T. Howell
1942-7-26
17251
Tulare
Mineral King
Comment
GH267020
Solanum umbelliferum
J. T. Howell
1930-9-28
5512
Unknown
Holt
Comment
RSA1080
Solidago californica
J. T. Howell
1928-6-30
1026
Ventura
Santa Susana Pass
Comment
CAS-BOT-BC364981
Solidago confinis
John Thomas Howell
1970-9-25
47444 28b
Kern
About 2 miles south of Kernville on road to Weldon
792
Comment
CAS-BOT-BC365450
Solidago elongata
John Thomas Howell
1946-6-30
22155
Marin
Rodeo Lagoon
Comment
CAS-BOT-BC365775
Solidago spectabilis
John Thomas Howell
1962-9-25
38929
Kern
South of Kernville below hot springs
792
Comment
CAS-BOT-BC364916
Solidago velutina subsp. californica
John Thomas Howell
1981-10-14
54649
Sutter
Dean Ranch, Sutter Buttes
Comment
CAS-BOT-BC365115
Solidago velutina subsp. californica
John Thomas Howell
1924-8-11
620
Plumas
2 miles east of Chester
Comment
CAS-BOT-BC365281
Solidago velutina subsp. californica
John Thomas Howell
1970-9-21
47230
Tulare
Along Hwy. US 99 just northwest of Tagus
79
Comment
UC517539
Solidago velutina subsp. californica
John Thomas Howell
1933-8-27
11635
Napa
Sage Canyon , Sage Canyon (Napa Range)
Comment
CAS-BOT-BC365900
Soliva sessilis
John Thomas Howell
1957-5-17
s.n.
San Francisco
San Francisco. Bayview Hills
Comment
CAS-BOT-BC365858
Soliva sessilis
John Thomas Howell
1946-4-18
21653
Marin
Ignacio
Comment
CAS-BOT-BC365896
Soliva sessilis
John Thomas Howell
1956-5-6
31356
San Francisco
Sierra & Missouri Sts., San Francisco
Comment
CAS-BOT-BC374404
Sonchus asper
John Thomas Howell
1975-6-15
51130
Plumas
Quincy
1036
Comment
CAS-BOT-BC374679
Sonchus oleraceus
John Thomas Howell
1956-6-17
31591
San Francisco
Summit ridge of Bayview Hills, San Francisco
Comment
CAS-BOT-BC374575
Sonchus oleraceus
John Thomas Howell; Gordon H. True
1967-5-31
42524
Tulare
About 4 1/2 miles east-northeast of Pixley. Near E line of area
83
Comment
RSA38328B
Sorbus californica
J. T. Howell
1948-7-29
25173
Fresno
Bubbs Creek Canyon.
2835
Comment
CAS-BOT-BC390187
Spergularia bocconi
John Thomas Howell
1957-5-5
32175
San Francisco
San Francisco. Sierra & 22nd Sts.
Comment
CAS-BOT-BC390229
Spergularia bocconi
John Thomas Howell
1953-5-24
29019
Tuolumne
Near Montezuma on road to Chinese Camp
381
Comment
CDA24129
Spergularia macrotheca
J. T. Howell
1944-4-23
19397
Marin
Pacific coast; Escalle.
0
Comment
CAS-BOT-BC390423
Spergularia macrotheca var. macrotheca
John Thomas Howell
1956-5-12
31366
San Francisco
Marin St., San Francisco
Comment
CAS-BOT-BC390754
Spergularia marina
John Thomas Howell
1938-4-10
13742
Alameda
Eastern Livermore Valley
Comment
CAS-BOT-BC390970
Spergularia marina
John Thomas Howell; Gordon H. True
1978-4-4
52720
Solano
Flats bordering Denverton Slough
Comment
CAS-BOT-BC390750
Spergularia marina
John Thomas Howell
1955-6-14
30419
Shasta
0.8 mile west of Tower House
396
Comment
CAS-BOT-BC390555
Spergularia rubra
John Thomas Howell
1943-8-7
19169
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC390685
Spergularia rubra
John Thomas Howell; Walter Knight; Irja Knight; Gordon True
1967-6-12
1982
Plumas
Butterfly Botanical Area and Vicinity. Near barn in valley proper
1036
Comment
CAS-BOT-BC213204
Sphaeralcea
John Thomas Howell
1958-5-23
33241
Inyo
Alabama Hills
1463
Comment
CAS-BOT-BC374770
Sphaeromeria ruthiae
John Thomas Howell
1949-8-10
26212
Tulare
Upper Soldier Lake
3413
Comment
CAS-BOT-BC149641
Spiraea douglasii
John Thomas Howell
1960-7-18
35583
Plumas
Drakesbad
1828
Comment
CAS-BOT-BC152527
Spiraea splendens
John Thomas Howell
1943-7-17
18494
Nevada
Boreal Ridge, west side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC391111
Stellaria longipes subsp. longipes
John Thomas Howell
1948-7-29
25167
Fresno
Bubbs Creek Canyon
2834
Comment
CAS-BOT-BC391186
Stellaria longipes subsp. longipes
John Thomas Howell
1960-7-18
35516
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC391254
Stellaria longipes subsp. longipes
John Thomas Howell; Gordon H. True
1966-7-11
41622
Tulare
Poison Meadow, Kern Plateau
2286
Comment
UC1042592
Stellaria longipes var. longipes
John Thomas Howell
1950-7-14
26859
Tulare
Bakeoven Meadows; Sierra Nevada, South Fork of Kern River
2468
Comment
CAS-BOT-BC393724
Stellaria media
John Thomas Howell
1972-4-25
48714
Mariposa
Moist shaded flat at Cascade Falls west of Yosemite Valley
1036
Comment
RSA293
Stellaria media
J. T. Howell
1928-2-7
821
Orange
Near the ranch houses, Rancho Santa Ana
152
Comment
CAS-BOT-BC395086
Stellaria nitens
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-29
53395
Siskiyou
Forest Mountain Summit, 6 miles southwest of Yreka on road to Fort Jones
1249
Comment
CAS-BOT-BC181457
Stellaria obtusa
John Thomas Howell; Gordon H. True
1965-7-14
2252
Nevada
Fall Creek about 5 miles north of Yuba Gap and just east of Lake Bowman Road
1706
Comment
CAS-BOT-BC221856
Stenotaphrum secundatum
John Thomas Howell
1944-10-1
20766
Marin
Fairfax
Comment
CAS-BOT-BC375285
Stephanomeria exigua subsp. carotifera
John Thomas Howell
1955-7-8
30596
Monterey
2 miles from San Antonio Mission on road to Santa Lucia Camp
335
Comment
CAS-BOT-BC323007
Stephanomeria tenuifolia
John Thomas Howell
1944-8-8
s.n.
Tuolumne
Between Elizabeth Lake and Tuolumne Meadows
Comment
CAS-BOT-BC375771
Stephanomeria virgata
John Thomas Howell
1940-8-10
16114
Fresno
Zigzags east of Kings Canyon, Bubbs Creek
Comment
SEINET10610761
Stipa occidentalis
John Thomas Howell, Gordon H. True
1970-7-28
Howell 47040
Tulare
Kern Plateau. East side of Big Meadow on loop road south of North Manter Pass Trail.
2377
Comment
CAS-BOT-BC61169
Streptanthus batrachopus
John Thomas Howell
1942-6-21
16994
Marin
Carson Ridge.
Comment
UC1106260
Streptanthus batrachopus
John Thomas Howell
1941-7-6
16348
Marin
between Camp Zeische and Barth's Retreat; Mt. Tamalpais
Comment
UC1177256
Streptanthus batrachopus
John Thomas Howell
1946-5-19
21922
Marin
Carson Ridge
Comment
CAS-BOT-BC87153
Streptanthus glandulosus subsp. glandulosus
John Thomas Howell
1940-5-19
15453
Napa
Upper Saint Helena Creek.
Comment
CAS-BOT-BC87232
Streptanthus glandulosus subsp. glandulosus
John Thomas Howell
1931-4-19
6436
Sonoma
Spring Mountain Road, 7.5 miles west of Saint Helena.
Comment
CAS-BOT-BC87279
Streptanthus glandulosus subsp. secundus
John Thomas Howell
1944-5-21
19488
Marin
Mount Tamalpais. South side of Phoenix Lake.
Comment
CAS-BOT-BC87829
Streptanthus tortuosus
John Thomas Howell; Gordon H. True
1969-6-25
45850
Sierra
Sierra Nevada. 3 miles north of Bassetts on road to Gold Lake.
1950
Comment
CAS-BOT-BC375962
Stylocline
John Thomas Howell
1983-4-21
54741
Kern
Slope about 1 mile south of Kernville on road to Weldon
807
Comment
CAS-BOT-BC48054
Styrax redivivus
John Thomas Howell
1973-7-9
49700
Butte
Feather River Highway near Bear Ranch Creek.
457
Comment
RSA272
Suaeda moquinii
J. T. Howell
1927-7-9
297
San Bernardino
Between Deadman s Point and Box S Ranch, Mojave Desert.
915
Comment
CAS-BOT-BC237045
Symphoricarpos mollis
John Thomas Howell
1957-7-28
32824
San Francisco
Bayview Hills, San Francisco
Comment
CAS-BOT-BC245797
Symphoricarpos rotundifolius
John Thomas Howell
1950-7-20
27119
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC245801
Symphoricarpos rotundifolius
John Thomas Howell; Gordon H. True
1971-7-13
48340
Tulare
Northeaast end of Big Meadow, Kern Plateau, Sierra Nevada
2438
Comment
CAS-BOT-BC97561
Symphyotrichum ascendens
John Thomas Howell
1959-9-25
35020
Plumas
Chilcoot
1524
Comment
CAS-BOT-BC99103
Symphyotrichum chilense
John Thomas Howell
1931-9-27
8105
Mendocino
Coastal plain 6 miles south of Point Arena
Comment
CAS-BOT-BC99046
Symphyotrichum cusickii
John Thomas Howell
1961-9-22
36791
Butte
Sierra Nevada - North Fork Feather River at ARch Rock Tunnel
Comment
CAS-BOT-BC98908
Symphyotrichum foliaceum var. parryi
John Thomas Howell
1969-8-26
45969
Tulare
Sierra Nevada - Mineral King
2377
Comment
CAS-BOT-BC98942
Symphyotrichum foliaceum var. parryi
John Thomas Howell
1939-8-2
14877
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
CAS-BOT-BC97955
Symphyotrichum frondosum
John Thomas Howell; Gordon H. True
1967-9-18
43779
Tulare
Recreation area, north end of Lamont Meadow. Kern Plateau
1706
Comment
CAS-BOT-BC98556
Symphyotrichum lentum
John Thomas Howell
1925-11-27
1564
Solano
Green Valley near Cordelia
Comment
CAS-BOT-BC98471
Symphyotrichum spathulatum
John Thomas Howell
1951-8-21
28271
Sierra
Yuba Pass - Sierra Nevada
2042
Comment
CAS-BOT-BC98486
Symphyotrichum spathulatum
John Thomas Howell
1943-7-25
18817
Placer
West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC376636
Syntrichopappus fremontii
John Thomas Howell
1962-5-21
37237
Kern
East side of Walker Pass
1402
Comment
CAS-BOT-BC221907
Taeniatherum caput-medusae
John Thomas Howell
1954-5-16
29615
El Dorado
Shingle Springs
426
Comment
CAS-BOT-BC221943
Taeniatherum caput-medusae
John Thomas Howell
1945-6-18
20997
Lake
Kelseyville
Comment
SEINET10598037
Taeniatherum caput-medusae
John Thomas Howell
1945-6-18
Howell 20997
Lake
Common on open hillside, Kelseyville
Comment
CAS-BOT-BC376851
Taraxacum
John Thomas Howell
1960-7-18
35539
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC377004
Taraxacum officinale
John Thomas Howell; Gordon H. True
1968-5-12
44236
Tulare
Brush Creek Canyon. Kern Plateau
1402
Comment
RSA538
Tauschia arguta
J. T. Howell
1927-6-26
220
Orange
Claymine Canyon near Sierra Peak
366
Comment
RSA537
Tauschia parishii
J. T. Howell
1927-7-9
326
San Bernardino
Whiskey Canyon, San Bernardino Mtns.
1652
Comment
CAS-BOT-BC81327
Taxus brevifolia
John Thomas Howell
1929-10-5
4449
Sacramento
American River Canyon, 1/8 mile below Observation Point
Comment
CAS-BOT-BC447456
Tellima grandiflora
John Thomas Howell
1962-6-16
37639
Plumas
Lewisia Rock, Feather River North Fork.
640
Comment
CAS-BOT-BC399700
Thalictrum fendleri
John Thomas Howell
1969-8-28
46017
Tulare
Mineral King
2377
Comment
CAS-BOT-BC399923
Thalictrum sparsiflorum
John Thomas Howell
1947-8-4
23710
Inyo
Fifth Lake, Big Pine Lakes
3352
Comment
CAS-BOT-BC77727
Thelypteris nevadensis
John Thomas Howell
1936-8-28
12876
Trinity
4 1/2 miles west of Forest Glen
Comment
CAS-BOT-BC197370
Thinopyrum intermedium subsp. barbulatum
John Thomas Howell
1978-7-29
53353
Nevada
5 miles north of Truckee on road to Sierraville
1767
Comment
CAS-BOT-BC88237
Thysanocarpus curvipes
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52762
Calaveras
Sierra Nevada. Camp Nine Road northeast of Vallecito.
609
Comment
CAS-BOT-BC88399
Thysanocarpus curvipes
John Thomas Howell
1960-3-26
35190
Kern
Sierra Nevada. Kernville.
Comment
CAS-BOT-BC66950
Thysanocarpus laciniatus
John Thomas Howell
1933-4-9
10988
Santa Cruz
Ano Nuevo Pines.
Comment
CAS-BOT-BC66997
Thysanocarpus laciniatus
John Thomas Howell
1930-5-13
5020
Kern
8.5 miles west of summit of Walker Pass.
Comment
RSA223364
Thysanocarpus laciniatus
J. T. Howell
1931-3-22
5965
Monterey
Stone Canyon, 11 miles E of Salinas Valley.
Comment
CAS-BOT-BC447618
Tolmiea menziesii
John Thomas Howell
1943-8-9
19223
Glenn
Plaskett Meadows
1828
Comment
SEINET10471680
Torreya californica
John Thomas Howell
1948-5-16
Howell 24304
Marin
Near top of Eldridge Grade, Mt. Tamalpais.
Comment
CAS-BOT-BC169214
Toxicodendron diversilobum
John Thomas Howell
1964-4-28
40618
Mariposa
2 miles east of Morman Bar - Sierra Nevada
670
Comment
CAS-BOT-BC172963
Toxicodendron diversilobum
John Thomas Howell
1933-4-22
11036
San Benito
1.5 miles s. of Tres Pinos
Comment
GH347276
Toxicodendron diversilobum
J. T. Howell
1956-10-21
31915
Unknown
San Francisco, summit of Bayview Hills
Comment
CAS-BOT-BC377080
Tragopogon dubius
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49416
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC377089
Tragopogon dubius
John Thomas Howell
1974-9-20
50895
Plumas
7 miles from Quincy on road to Blairsden
1097
Comment
CAS-BOT-BC517419
Triantha occidentalis subsp. occidentalis
John Thomas Howell
1958-8-2
34174
Fresno
Sierra Nevada, Tent Meadow (lower), Copper Creek Canyon
2377
Comment
CAS-BOT-BC519554
Triantha occidentalis subsp. occidentalis
John Thomas Howell
1945-7-18
s.n.
Sonoma
Sonoma: Pitkin Marsh
Comment
SEINET13948235
Trichostema ovatum
John Thomas Howell
1962-1
38135
Kern
Open hills 5 mi NE of Bakersfield; ca 700 ft alt.
213
Comment
UC517488
Trifolium gracilentum
John Thomas Howell
1933-5-14
11249
Contra Costa
e St. Mary's College (hills)
Comment
UC1177205
Trifolium variegatum var. melananthum
John Thomas Howell
1947-4-23
23064
Marin
w Mt. Vision (Drakes Estero)
Comment
JEPS33665
Trifolium willdenovii
John Thomas Howell
1925-3-22
803
Alameda
Arroyo Mocho
Comment
CAS-BOT-BC451854
Triglochin maritima
John Thomas Howell
1944-5-7
19447
Marin
Larkspur salt marsh
Comment
CAS-BOT-BC451781
Triglochin maritima
John Thomas Howell
1955-6-14
30424
San Luis Obispo
0.8 mile west of Tower House
396
Comment
CAS-BOT-BC519081
Trillium angustipetalum
John Thomas Howell
1923-6-14
57
Mariposa
Wawona Valley
1219
Comment
CAS-BOT-BC519421
Trillium chloropetalum var. giganteum
John Thomas Howell
1924-2-29
284
Alameda
Wildcat Canyon, Berkeley Hills
Comment
CAS-BOT-BC193575
Trisetum spicatum
John Thomas Howell
1948-7-22
24910
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC200219
Trisetum spicatum
John Thomas Howell
1944-8-10
20230
Mono
North slope of Mt. Dana
Comment
CAS-BOT-BC200317
Trisetum spicatum
John Thomas Howell; Gordon H. True
1966-7-11
41705
Tulare
Horse Meadow, Kern Plateau
2255
Comment
POM261498
Trisetum spicatum
J. T. Howell
1940-8-1
15786
Tulare
Between Reflection Lake and Harrison Pass.
Comment
CAS-BOT-BC200460
Trisetum wolfii
John Thomas Howell
1964-8-11
40956
Mono
Meadow below Tioga Lake
2910
Comment
CAS-BOT-BC524216
Triteleia ixioides subsp. anilina
John Thomas Howell
1943-7-17
18475
Nevada
West side of Donner Pass near Norden
2133
Comment
RSA179713
Triteleia laxa
J. T. Howell
1930-5-15
5112
Kern
Hills near Glenville, Greenhorn Range, alt. 3200 ft.
975
Comment
CAS-BOT-BC527967
Triteleia peduncularis
John Thomas Howell
1947-6-5
s. n.
Sonoma
Cunninghan Marsh
Comment
CAS-BOT-BC67501
Tropidocarpum gracile
John Thomas Howell
1931-3-23
5980
Monterey
Poncho Rico Canyon 5 miles east of San Bernardo.
Comment
CAS-BOT-BC73875
Tropidocarpum gracile
John Thomas Howell; Gordon H. True
1969-5-14
45754
Tulare
Sierra Nevada. Kern Plateau. Cherry Hill Road about 1.5 mile east of Kern River Canyon road, Brush Creek Canyon.
1310
Comment
CAS-BOT-BC85869
Tsuga mertensiana subsp. grandicona
John Thomas Howell
1946-7-19
22529
Fresno
Fourth Recess
3078
Comment
CAS-BOT-BC73928
Turritis glabra
John Thomas Howell
1943-8-3
18946
Glenn
Plaskett Meadows.
1828
Comment
CAS-BOT-BC74009
Turritis glabra
John Thomas Howell
1960-7-20
35729
Plumas
Lassen Volcanic National Park. Drakesbad.
1828
Comment
CAS-BOT-BC74096
Turritis glabra
John Thomas Howell
1939-8-6
15088
Siskiyou
Spirit Lake, Marble Mountains.
1828
Comment
CAS-BOT-BC74106
Turritis glabra
John Thomas Howell
1930-6-8
5291
Sonoma
8.5 miles north of Bodega Bay.
Comment
CAS-BOT-BC77658
Ulmus pumila
John Thomas Howell
1958-5-29
33624
Inyo
Bishop
1264
Comment
CAS-BOT-BC91137
Umbellularia californica
John Thomas Howell
1928-2-9
3333
Los Angeles
Floor of Santa Anita Canon [Canyon], San Gabriel Mountains.
Comment
CAS-BOT-BC382840
Uropappus lindleyi
John Thomas Howell; Gordon H. True
1968-5-14
44438
Tulare
Cherry Hill Road, Brush Creek Canyon, Kern Plateau
1219
Comment
CAS-BOT-BC381861
Uropappus lindleyi
John Thomas Howell; Gordon H. True
1971-6-14
47692
Kern
Isabella
762
Comment
CAS-BOT-BC404101
Urtica dioica subsp. holosericea
John Thomas Howell
1962-7-7
38152
Kern
Kern River Canyon
304
Comment
CAS-BOT-BC404261
Urtica dioica subsp. holosericea
John Thomas Howell; Gordon H. True
1967-7-4
43026
Tulare
Fish Creek about 3.5 miles south of Troy Meadow, Kern Plateau
2255
Comment
UCD111558
Urtica dioica subsp. holosericea
John Thomas Howell
1960-7-20
35717
Plumas
Lassen Volcanic National Park. Drakesbad.
1676
Comment
CAS-BOT-BC193997
Vaccinium cespitosum
John Thomas Howell
1925-7-2
1336
El Dorado
Trail to Desolation Valley above Glen Alpine, Lake Tahoe Region
Comment
CAS-BOT-BC199471
Vaccinium parvifolium
John Thomas Howell
1930-7-27
5395
Sonoma
1 mile north of Fort Ross
Comment
CAS-BOT-BC193404
Vaccinium shastense subsp. nevadense
John Thomas Howell
1954-6-4
29924
Tuolumne
Stanislaus River bridge near Twain Harte - Sierra Nevada
1158
Comment
A363277
Vaccinium uliginosum
J. T. Howell
1944-8-14
20465
Unknown
Tuolumne Canyon above Glen Aulin
Comment
RSA653
Verbena lasiostachys
J. T. Howell
1928-6-30
1028
Ventura
Santa Susana Pass.
457
Comment
UCR89185
Verbena litoralis
J. T. Howell
1954-9-5
30055
Amador
Mokelumne River Birdge on Hwy 49. Between Jackson and Mokelumne Hill
Comment
JEPS74302
Veronica arvensis
John Thomas Howell
1972-4-24
48681
Merced
Merced
Comment
RSA40176
Veronica serpyllifolia var. humifusa
J. T. Howell
1943-8-9
19232
Glenn
Plaskett Meadows.
1829
Comment
CAS-BOT-BC263961
Viola adunca
John Thomas Howell
1944-3-26
19344
Marin
Above Ledum Swamp, Inverness Ridge
Comment
CAS-BOT-BC203086
Vitis californica
John Thomas Howell
1933-8-27
11628
Napa
Sage Canyon, Napa Range
Comment
CAS-BOT-BC198779
Vulpia bromoides
John Thomas Howell
1938-6-19
13915
Marin
Trockmorton Trail, Mt. Tamalpais
Comment
CAS-BOT-BC198792
Vulpia bromoides
John Thomas Howell
1952-4-27
s.n.
Santa Barbara
San Roque Canyon
Comment
POM237126
Vulpia bromoides
J. T. Howell
1945-6-18
21005
Lake
Bartlett Mountain, Sawmill Flat.
1220
Comment
CAS-BOT-BC183086
Vulpia microstachys var. ciliata
John Thomas Howell
1954-5-17
29730
El Dorado
1 mile southwest of Garden Valley
609
Comment
CAS-BOT-BC183170
Vulpia microstachys var. ciliata
John Thomas Howell
1964-4-26
40451
Mariposa
Just southeast of Mariposa, on the road to Morman Bar
594
Comment
CAS-BOT-BC183179
Vulpia microstachys var. ciliata
John Thomas Howell
1963-5-5
39051
Monterey
Mustang Grade, west of Priest Valley
670
Comment
CAS-BOT-BC183218
Vulpia microstachys var. ciliata
John Thomas Howell
1933-4-22
11090
San Benito
6 miles from the Pinnacles on road to San Benito
Comment
CAS-BOT-BC183682
Vulpia microstachys var. ciliata
John Thomas Howell
1957-4-13
32022
San Joaquin
Corral Hollow
Comment
CAS-BOT-BC183710
Vulpia microstachys var. ciliata
John Thomas Howell; Gordon H. True
1968-5-13
44247
Tulare
North Meadow Creek, Kern Plateau
1981
Comment
GH341834
Vulpia microstachys var. ciliata
J. T. Howell
1939-4-30
14624
Unknown
Walter Springs
Comment
CAS-BOT-BC184163
Vulpia microstachys var. pauciflora
John Thomas Howell
1965-4-26
41165
Madera
3 miles south of Oakhurst
914
Comment
CAS-BOT-BC184247
Vulpia microstachys var. pauciflora
John Thomas Howell
1958-5-21
33049
Kern
Kern River Canyon near Bodfish
762
Comment
CAS-BOT-BC184344
Vulpia microstachys var. pauciflora
John Thomas Howell
1933-4-30
11194
Marin
North side of Mt. Tamalpais
Comment
CAS-BOT-BC184376
Vulpia microstachys var. pauciflora
John Thomas Howell
1964-4-29
40668 A
Mariposa
4 miles from Mariposa on road to Mt. Bullion
670
Comment
CAS-BOT-BC184621
Vulpia microstachys var. pauciflora
John Thomas Howell; Gordon H. True
1967-5-29
42356
Tulare
Midway between Chimney and Lamont meadows, Kern Plateau
1889
Comment
POM261555
Vulpia microstachys var. pauciflora
J. T. Howell
1940-6-2
15579
Mariposa
Yosemite Valley.
Comment
CAS-BOT-BC178606
Vulpia myuros subsp. megalura
John Thomas Howell; Gordon H. True
1968-5-13
44312
Tulare
Cherry Hill Road, Brush Creek Canyon - Kern Plateau, Sierra Nevada
1584
Comment
CAS-BOT-BC184779
Vulpia myuros subsp. megalura
John Thomas Howell
1945-6-20
21107
Lake
Pinnacle Rock, Bartlett Mountain
Comment
CAS-BOT-BC185658
Vulpia myuros subsp. megalura
John Thomas Howell
1963-5-6
39185
Monterey
Jolon
298
Comment
GH361314
Vulpia myuros var. hirsuta
J. T. Howell
1948-5-16
24299
Unknown
Upper part of Cascade Canyon, Mt. Tamalpais
Comment
CAS-BOT-BC185947
Vulpia octoflora var. octoflora
John Thomas Howell
1954-5-19
29905
Mariposa
Mt. Bullion
640
Comment
CAS-BOT-BC383564
Wyethia mollis
John Thomas Howell
1960-7-21
35805
Plumas
Lassen Volcanic National Park. Slopes near Terminal Geyser
1828
Comment
CAS-BOT-BC383815
Xanthium strumarium
John Thomas Howell
1952-10-28
28891 A
Tulare
Three Rivers
304
Comment
UCR142950
Zannichellia palustris
J. T. Howell
1932-10-16
10841
San Joaquin
Inner Coast Range, Corral Hollow Creek, 5 miles east of Tesla
183
Comment
CAS-BOT-BC527193
Zigadenus micranthus
John Thomas Howell
1940-5-19
15463
Napa
Upper St. Helena Creek
Comment
CAS-BOT-BC534336
Zigadenus micranthus
John Thomas Howell
1944-7-15
19797
Glenn
Canyon of Snow Basin Creek,
Comment