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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
CAS-BOT-BC73522
Abies concolor
John Thomas Howell; Gordon H. True
1970-6-24
46679
Tulare
Sierra Nevada, Kern Plateau - Big Meadow to North Manter Pass on trail to Manter Meadow.
2438
Comment
CAS-BOT-BC78026
Abies concolor
John Thomas Howell
1962-7-8
38279
Kern
1.5 miles se. of Summit, Greenhorn Mountains
1524
Comment
CAS-BOT-BC383921
Abronia pogonantha
John Thomas Howell; Gordon H. True
1967-5-30
42421
Inyo
Ninemile Canyon
1432
Comment
CAS-BOT-BC447792
Acaena pinnatifida var. californica
John Thomas Howell
1957-5-17
s.n.
San Francisco
Bayview Hills
Comment
CAS-BOT-BC219670
Acanthomintha lanceolata
John Thomas Howell
1957-5-19
32359
Stanislaus
Del Puerto Canyon
Comment
CAS-BOT-BC330646
Acer glabrum var. diffusum
John Thomas Howell
1950-7-12
26728
Inyo
Sage Flat to Olancha Pass
2743
Comment
CAS-BOT-BC331625
Acer macrophyllum
John Thomas Howell
1969-9-12
46088
El Dorado
Sierra Nevada. Near Bridal Veil Falls, 3 miles W of Riverton
Comment
CAS-BOT-BC21618
Achillea millefolium
John Thomas Howell
1926-4-24
1942
San Francisco
Lake Merced
Comment
CAS-BOT-BC21750
Achillea millefolium
John Thomas Howell
1962-6-16
37581
Butte
Pentz road 2 mi. s. of Magalia
609
Comment
CAS-BOT-BC30091
Achillea millefolium
John Thomas Howell
1955-8-6
30896
Sonoma
Dunes at Bodega Head
Comment
CAS-BOT-BC30429
Achillea millefolium
John Thomas Howell
1939-8-6
15093
Siskiyou
Spirit Lake, Marble Mountains
1828
Comment
RSA14946
Achillea millefolium var. puberula
John T. Howell
1934-9-23
12573
Solano
Suisun Marshes at Benecia [Benicia] Junction
Comment
CAS-BOT-BC260346
Achnatherum hymenoides
John Thomas Howell
1958-5-24
33273
Inyo
Whitney Portal Road
2346
Comment
CAS-BOT-BC218025
Achnatherum latiglume
John Thomas Howell
1962-7-9
38394
Kern
Near Park Headquarters, Greenhorn Mountains
1798
Comment
CAS-BOT-BC210647
Achnatherum lemmonii
John Thomas Howell
1943-8-3
18979
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC210690
Achnatherum lemmonii
John Thomas Howell
1960-7-22
35887
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
UCD50595
Achnatherum lemmonii
John Thomas Howell
1960-7-22
35887
Plumas
Lassen Volcanic National Park. Drakesbad.
1676
Comment
CAS-BOT-BC210767
Achnatherum nelsonii
John Thomas Howell
1946-7-16
22442
Inyo
Box Lake, Rock Creek Lake Basin
3200
Comment
CAS-BOT-BC210801
Achnatherum nelsonii
John Thomas Howell
1940-7-30
15725
Tulare
East Lake
2926
Comment
GH361432
Achnatherum nevadense
J. T. Howell
1941-7-30
16493
Unknown
Near Garnet Lake
2956
Comment
UC710575
Achnatherum nevadense
John Thomas Howell
1944-8-6
20019
Tuolumne
slope n of Tuoloumne Meadows
Comment Read comments Feb 5 2015
CAS-BOT-BC216358
Achnatherum occidentale
John Thomas Howell
1944-8-14
20445
Tuolumne
Glen Aulin Trail, Tuolumne Meadows
Comment
CAS-BOT-BC216979
Achnatherum occidentale
John Thomas Howell
1951-7-17
27855
Tulare
White Chief Trail
2895
Comment
CAS-BOT-BC216997
Achnatherum occidentale
John Thomas Howell
1948-7-26
25025
Tulare
Bubbs Creek Canyon
3139
Comment
SEINET196560
Achnatherum occidentale
J. T. Howell
1947-7-25
San Bernardino
Whitewater Cirque Mt. San Gorgonio San Bernardino Mts.
Comment
UCD50975
Achnatherum occidentale
John Thomas Howell
1926-7-24
2100
Plumas
near Prattville.
1463
Comment
CAS-BOT-BC210849
Achnatherum occidentale subsp. californicum
John Thomas Howell
1960-7-20
35787
Plumas
Lassen Volcanic National Park. Between Boiling Springs Lake and Terminal Geyser
1859
Comment
CAS-BOT-BC216494
Achnatherum occidentale subsp. californicum
John Thomas Howell
1962-7-10
38475
Kern
Shirley Meadows, Greenhorn Mountains
2011
Comment
CAS-BOT-BC210939
Achnatherum occidentale subsp. pubescens
John Thomas Howell
1962-5-22
37338
Tulare
Johnsondale
1423
Comment
CAS-BOT-BC210959
Achnatherum occidentale subsp. pubescens
John Thomas Howell; Gordon H. True
1967-7-5
43078
Tulare
6.4 miles north of Chimney Meadow, Kern Plateau
2225
Comment
CAS-BOT-BC218626
Achnatherum occidentale subsp. pubescens
John Thomas Howell
1948-7-31
25223
Inyo
East side of Kearsarge Pass
3505
Comment
CAS-BOT-BC218064
Achnatherum pinetorum
John Thomas Howell
1948-7-19
24787
Inyo
Ridge between Flower and Bench Lakes
Comment
GH361497
Achnatherum pinetorum
J. T. Howell
1946-7-26
22764
Unknown
Mono Mesa
3657
Comment
CAS-BOT-BC391362
Aconitum columbianum subsp. columbianum
John Thomas Howell
1943-8-7
3
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC391455
Aconitum columbianum subsp. columbianum
John Thomas Howell
1943-7-16
18435
Nevada
Boreal Ridge, West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC30919
Adenophyllum porophylloides
John Thomas Howell
1927-11-26
3258
San Diego
San felipe wash
Comment
CAS-BOT-BC9068
Aegilops triuncialis
John Thomas Howell
1954-5-16
29582
Sacramento
4 miles southeast of Folsom on Placerville Road
Comment
CAS-BOT-BC295562
Agnorhiza elata
John Thomas Howell; R. C. Barneby
1954-5-10
29344
Fresno
Grade above Tollhouse
792
Comment
JEPS28956
Agnorhiza invenusta
John Thomas Howell
1962-7-9
38402
Kern
Greenhorn Mountains, near park headquarters Sierra Nevada
1798
Comment
CAS-BOT-BC295681
Agnorhiza ovata
John Thomas Howell; Gordon H. True
1971-7-15
48530
Tulare
On Dome Lands Trail, about 0.5 miles south of Church Dome. Kern Plateau
2316
Comment
CAS-BOT-BC15276
Agoseris heterophylla
John Thomas Howell
1934-6-12
12013
Modoc
Between Davis Creek and Plum Valley
Comment
CAS-BOT-BC22947
Agoseris heterophylla
John Thomas Howell
1944-6-18
s.n.
Marin
Fish Grade, Mt. Tamalpais
Comment
POM203659
Agoseris heterophylla
John T. Howell
1933-5-14
11260
Contra Costa
Hills east of St. Mary's college
Comment
CAS-BOT-BC13132
Agoseris hirsuta
John Thomas Howell
1937-6-13
13050
Marin
Bolinas
Comment
CAS-BOT-BC13278
Agoseris monticola
J. T. Howell
1942-8-7
17783
Tulare
Lost Canyon
3048
Comment
CAS-BOT-BC13365
Agoseris retrorsa
J. T. Howell
1958-7-23
33786
Fresno
Simpson Meadow, Middle Fork of Kings River
1828
Comment
CAS-BOT-BC13405
Agoseris retrorsa
J. T. Howell
1962-7-10
38509
Kern
Summit of Cook's Peak, Greenhorn Mountains.
2103
Comment
CAS-BOT-BC42904
Agoseris retrorsa
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-16
53808
Tulare
Sherman Pass Road, 4.5 miles east of junction with Cherry Hill Road, Kern Plateau
2255
Comment
SEINET10506825
Agrostis
John Thomas Howell
1947-5-14
Howell 23149
Marin
Drakes Estero, WNW of Mount Vision. Restricted to gravelly slope on outcrop of diatomaceous shale of Monterey Series. Type collection.
Comment
SEINET10806860
Agrostis
John Thomas Howell
1947-4-23
Howell 23062
Marin
Drakes Estero west of Mt. Vision, Pt. Reyes Peninsula.
Comment
SEINET3916093
Agrostis avenacea
John Thomas Howell
1957-6-16
32643
San Francisco
San Francisco. Third and Davidson streets.; 0
Comment
CAS-BOT-BC127082
Agrostis exarata
John Thomas Howell
1961-9-24
36918
Plumas
Sierra Nevada. Feather River bed southwest of Beckwourth.
1487
Comment
CAS-BOT-BC127094
Agrostis exarata
John Thomas Howell
1959-9-25
35005
Plumas
Sierra Nevada. 2 miles east of Portola.
1484
Comment
CAS-BOT-BC127100
Agrostis exarata
John Thomas Howell
1961-9-23
36867
Plumas
Sierra Nevada. Indian Valley.
1082
Comment
CAS-BOT-BC127118
Agrostis exarata
John Thomas Howell
1943-7-14
18314
Nevada
West side of Donner Pass near Norden.
2133
Comment
CAS-BOT-BC127221
Agrostis exarata
John Thomas Howell
1945-7-29
21345
Marin
Bolinas.
Comment
CAS-BOT-BC139665
Agrostis gigantea
John Thomas Howell
1943-7-3
18244
Marin
Sausalito.
Comment
CAS-BOT-BC139714
Agrostis gigantea
John Thomas Howell
1977-8-1
52451
Calaveras
Sierra Nevada. Dorrington.
1463
Comment
CAS-BOT-BC139172
Agrostis idahoensis
John Thomas Howell
1942-8-1
17517
Tulare
Sky Parlor Meadow. Chagoopa Plateau.
Comment
CAS-BOT-BC139244
Agrostis idahoensis
John Thomas Howell
1927-7-10
2763 B
San Bernardino
San Bernardino Mountains. On Mill Creek Road at Riverside Municipal Camp.
2225
Comment
CAS-BOT-BC139276
Agrostis idahoensis
John Thomas Howell; Gordon H. True
1968-7-16
4412
Mono
Sierra Nevada. Virginia Lakes basin, ca. 3.25 miles southwest of Conway Summit.
2956
Comment
CAS-BOT-BC139298
Agrostis idahoensis
John Thomas Howell; Gordon H. True
1973-8-1
50232
Lassen
Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville.
2133
Comment
CAS-BOT-BC139251
Agrostis idahoensis
John Thomas Howell
1960-7-20
35734
Plumas
Lassen Volcanic National Park. Between Boiling Springs Lake and Drakesbad.
1828
Comment
CAS-BOT-BC197
Agrostis longiligula var. australis
John Thomas Howell
1943-7-4
18250
Marin
Ledum Swamp
Comment
CAS-BOT-BC138877
Agrostis microphylla
John Thomas Howell
1954-5-18
29802
Amador
Sierra Nevada. 2 miles north northeast of Buena Vista.
91
Comment
CAS-BOT-BC138899
Agrostis pallens
John Thomas Howell; Gordon H. True
1966-7-11
41652
Tulare
Sierra Nevada. Kern Plateau. Poison Meadow.
2286
Comment
CAS-BOT-BC139049
Agrostis pallens
John Thomas Howell
1945-9-13
21465
Marin
Point Reyes Peninsula. Near radio station.
Comment
UCD53198
Agrostis pallens
John Thomas Howell; Gordon H. True
1970-7-28
47009
Tulare
west side of Big Meadow just south of Pipe Spring, Kern Plateau.
2377
Comment
UCD53335
Agrostis scabra var. geminata
John Thomas Howell
1960-7-20
35774
Plumas
Boiling Springs Lake.
1798
Comment
CAS-BOT-BC138625
Agrostis stolonifera
John Thomas Howell
1973-7-10
s.n.
Lassen
Sierra Nevada. In city park, Susanville.
1295
Comment
CAS-BOT-BC64481
Ailanthus altissima
John Thomas Howell
1944-7-23
s.n.
Marin
Santa Venetia.
Comment
GH341373
Aira caryophyllea
J. T. Howell
1943-6-3
Unknown
Bootjack, Mt. Tamalpais, Marin County
Comment
CAS-BOT-BC138193
Aira praecox
John Thomas Howell
1946-5-26
21958
Marin
Ocean bluff, Point Reyes Lighthouse.
Comment
CAS-BOT-BC445387
Alisma plantago-aquatica
John Thomas Howell
1944-6-25
19652
Marin
Santa Venetia
Comment
CAS-BOT-BC131967
Allium
John Thomas Howell; R. C. Barneby
1954-5-14
29570
Tehama
9 miles east of Paynes Creek
1005
Comment
CAS-BOT-BC459453
Allium bisceptrum
John Thomas Howell
1941-7-31
16550 A
Madera
Agnew Pass Trail
Comment
CAS-BOT-BC466581
Allium campanulatum
John Thomas Howell
1943-7-20
18618
Nevada
Castle Rock
Comment
CAS-BOT-BC469115
Allium falcifolium
John Thomas Howell
1941-4-6
16179
Contra Costa
Ridge east of Deer Flat, Mt. Diablo
Comment
CAS-BOT-BC469131
Allium falcifolium
John Thomas Howell
1945-6-20
21100
Lake
Pinnacle Rock, Bartlett Mountain
Comment
CAS-BOT-BC472781
Allium neapolitanum
John Thomas Howell
1969-4-20
45513
Marin
2nd and Shaver Streets, San Rafael
Comment
CAS-BOT-BC472802
Allium obtusum
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-28
53171
Alpine
Ebbetts Pass Rd., Cape Horn, NE of Lake Alpine, Sierra Nevada
2438
Comment
CAS-BOT-BC474076
Allium platycaule
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50684
Lassen
South and southeast of Diamond Mountain, Sierra Nevada
2286
Comment
CAS-BOT-BC132145
Allium siskiyouense
Thomas Howell
1884-6-17
s.n.
Siskiyou
Siskiyou Mountains
Comment
CAS-BOT-BC131948
Allium tribracteatum
John Thomas Howell; Gordon H. True
1967-7-11
43372
Plumas
About 2 miles southeast of Mt. Hough
1828
Comment
CAS-BOT-BC474324
Allium validum
John Thomas Howell
1943-8-5
19061
Glenn
Plaskett Meadows
1828
Comment
UCD109971
Alnus incana subsp. tenuifolia
John Thomas Howell
1959-9-24
34936
Plumas
Butterfly Creek, near mouth.
Comment
CAS-BOT-BC170696
Alnus rhombifolia
John Thomas Howell
1959-9-24
34943
Plumas
Spanish Creek at mouth of Butterfly Creek. Sierra Nevada
883
Comment
CAS-BOT-BC170989
Alnus rhombifolia
John Thomas Howell
1940-5-12
s.n.
Marin
Lagunitas Creek Canyon
Comment
UCD110009
Alnus rhombifolia
John Thomas Howell
1960-3-26
35183
Kern
Kernville.
Comment
UCD55869
Alopecurus aequalis
John Thomas Howell; Gordon H. True
1967-7-4
43042
Tulare
Kern Plateau, Fish Creek about 3.5 miles south of Troy Meadow.
2255
Comment
CAS-BOT-BC138072
Alopecurus aequalis var. aequalis
John Thomas Howell
1949-7-31
25954
Tulare
Golden Trout Creek.
2834
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-BC137895
Alopecurus saccatus
John Thomas Howell; Gordon H. True
1967-5-31
42520
Tulare
Vernal pool natural area in Valley Grassland, about 4.5 miles east-northeast of Pixley.
83
Comment
RSA201739
Amaranthus arenicola
J. T. Howell
1963-8-7
40066
Monterey
Bank of San Lorenzo Creek just south of King City
Comment
UCD97195
Amaranthus blitoides
John Thomas Howell
1945-9-28
21521
Mono
Mono Lake.
Comment
UCD97196
Amaranthus blitoides
John Thomas Howell
1959-9-25
35002
Plumas
2 miles east of Portola.
1484
Comment
RSA223383
Amaranthus powellii
J. T. Howell
1963-8-5
39943
Monterey
Salinas, northern city limits
Comment
UC1176785
Amaranthus retroflexus
John Thomas Howell
1945-9-16
1475
Marin
near San Rafael
Comment
RSA215949
Amaranthus retroflexus
J. T. Howell
1957-7-28
32836
San Francisco
Third and Davidson Streets, San Francisco.
Comment
CAS-BOT-BC13679
Ambrosia artemisiifolia
John Thomas Howell
1956-7-15
31680
San Francisco
Waterfront Street near Mission Rock Terminal
Comment
CAS-BOT-BC45020
Ambrosia psilostachya
John Thomas Howell
1926-9-9
2189
Marin
San Rafael
Comment
A346839
Amelanchier utahensis
J. T. Howell
1945-6-20
21083
Unknown
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC136873
Amelanchier utahensis
John Thomas Howell; Gordon H. True
1969-6-25
45848
Sierra
3 miles north of Bassetts on road to Gold Lake
1950
Comment
CAS-BOT-BC142511
Amelanchier utahensis
John Thomas Howell
1947-4-13
23056
Marin
Tiburon Peninsula
Comment
GH424813
Amsinckia
J. T. Howell
1933-5-16
11296
Unknown
San Francisco, Golden Gate Park
Comment
GH424644
Amsinckia
J. T. Howell
1934-6-13
12085
Unknown
Surprise Valley, near Fort Bidwell
Comment
GH424784
Amsinckia
J. T. Howell
1933-4-22
11074
Unknown
Near San Benito
Comment
GH424807
Amsinckia
J. T. Howell
1931-3-19
5862
Unknown
Near Coalinga
Comment
GH424840
Amsinckia
J. T. Howell
1931-3-22
5972
Unknown
Stone Canyon
Comment
CAS-BOT-BC54158
Amsinckia menziesii
John Thomas Howell
1934-6-16
12218
Modoc
5 mi. from Adin on road to Alturas.
Comment
UCD119796
Amsinckia spectabilis
John Thomas Howell
1933-8-19
11606
Monterey
Cypress Point, Monterey Peninsula.
Comment
CAS-BOT-BC45123
Anaphalis margaritacea
John Thomas Howell
1940-7-29
15677
Fresno
Between Charlotte Creek and Junction Meadow, Bubbs Creek
Comment
RSA201432
Anchusa officinalis
J. T. Howell
1955-7-17
30714
Trinity
Near Hayfork.
732
Comment
CAS-BOT-BC137800
Andropogon virginicus var. virginicus
John Thomas Howell
1959-9-20
34669
Butte
Sierra Nevada. Eastern outskirst of Oroville. Lower foothills.
60
Comment
CAS-BOT-BC46928
Androsace elongata subsp. acuta
John Thomas Howell
1925-3-22
844
Alameda
Arroyo Mocho at ne. base of Cedar Mt.
Comment
CAS-BOT-BC128554
Androsace septentrionalis
John Thomas Howell
1950-7-22
27236
Tulare
Summit ridge, Olancha Peak
3698
Comment
CAS-BOT-BC128589
Androsace septentrionalis
John Thomas Howell
1949-8-9
26193
Tulare
Cirque Peak
3733
Comment
CAS-BOT-BC400388
Anemopsis californica
John Thomas Howell; Gordon H. True
1967-9-18
43789
Tulare
Lamont Meadow, Kern Plateau
1645
Comment
CAS-BOT-BC271456
Anisocarpus madioides
John Thomas Howell
1945-6-20
21099
Lake
Near Pinnacle Rock, Bartlett Mountain
Comment
CAS-BOT-BC64034
Anisocoma acaulis
John Thomas Howell
1948-4-25
24239
Kern
Between Kernville and Isabella
Comment
JEPS33925
Antennaria argentea
J. Thomas Howell
1925-6-14
1153
El Dorado
Emerald Bay Camp; Lake Tahoe
Comment
CAS-BOT-BC69168
Antennaria dioica
John Thomas Howell
1937-7-21
13177
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC77346
Antennaria media
John Thomas Howell
1937-7-24
13401
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
GH414170
Antennaria pulchella
J. T. Howell
1941-7-24
16440
Unknown
Near Garnet Lake
2956
Comment
UC891547
Antennaria rosea
J. Thomas Howell
1937-7-21
13177
Siskiyou
near Big Flat; South Fork of Salmon River
1524
Comment
CAS-BOT-BC84759
Antennaria rosea subsp. rosea
John Thomas Howell
1939-8-8
15183
Siskiyou
Black Mts., Marble Mts.
Comment
CAS-BOT-BC84684
Anthemis cotula
John Thomas Howell
1924-10-11
668
Alameda
Berkeley
Comment
CAS-BOT-BC84619
Anthemis cotula
John Thomas Howell
1956-7-1
31649
San Francisco
Embarcadero and Vallejo St.
Comment
CAS-BOT-BC137757
Anthoxanthum odoratum
John Thomas Howell
1945-6-18
20969
Lake
Baumgartner Meadow north of Cobb Mountain.
Comment
POM203040
Anthriscus caucalis
J. T. Howell
1934-5-20
11829
Santa Clara
Hills west of Los Gatos
Comment
RSA88120
Antirrhinum vexillocalyculatum subsp. intermedium
J. T. Howell
1951-6-26
27544
Plumas
Feather River Canyon.
854
Comment
CAS-BOT-BC457536
Aphanes occidentalis
John Thomas Howell
1957-4-28
32063
Monterey
Santa Lucia Mountains; roadside depression 1.6 miles N.W. of summit of Jamesburg road.
640
Comment
CAS-BOT-BC395031
Aquilegia formosa
John Thomas Howell
1944-8-12
20429
Tuolumne
Gaylor Lakes
3261
Comment
CAS-BOT-BC409154
Aquilegia pubescens
John Thomas Howell
1948-7-26
25058
Tulare
Center Basin
3413
Comment
RSA88489
Arabis holboellii var. pinetorum
J. T. Howell
1951-7-19
27949
Tulare
Monarch Lakes Trail. Mineral King and vicinity.
2439
Comment
UCD101909
Arceuthobium americanum
John Thomas Howell; Gordon H. True
1970-7-28
47048
Tulare
Kern Plateau; at s.e. end of Big Meadow.
2377
Comment
RSA201481
Arceuthobium californicum
J. T. Howell
1962-9-23
38805
Kern
Near Tiger Flat. Greenhorn Mtns.
1982
Comment
CAS-BOT-BC409948
Arceuthobium campylopodum
John Thomas Howell; Gordon H. True
1969-9-30
46381 A
Tulare
Cherry Hill Road, 4 miles from Burton Camp, canyon of Poison Meadow Creek, Kern Plateau
2194
Comment
CAS-BOT-BC410091
Arceuthobium occidentale
John Thomas Howell
1962-7-12
38665
Kern
3 miles N of Kernville
822
Comment
CAS-BOT-BC24157
Arctostaphylos
John Thomas Howell
1931-6-18
6741
Del Norte
Rocky slope, summit of road between Crescent City and Grants pass
731
Comment
SEINET10736234
Arctostaphylos acutifolia
John Thomas Howell
1943-8-8
Howell 19212
Tehama
Log Spring Ridge. 1.1 miles west of Ranger Station, Tehama Co.
Comment
CAS-BOT-BC25319
Arctostaphylos bakeri
John Thomas Howell
1933-4-2
10958
Sonoma
Serpentine ridge, 2 miles E of Occidental
Comment
POM203044
Arctostaphylos canescens subsp. canescens
J. T. Howell
1934-3-3
11748
Sonoma
Between Fort Ross and Stewart's Point.
Comment
CAS-BOT-BC23851
Arctostaphylos canescens subsp. sonomensis
John Thomas Howell
1931-3-14
5761
Sonoma
Rincon Ridge, near Santa Rosa
Comment
A350169
Arctostaphylos canescens var. sonomensis
J. T. Howell
1937-4-11
12895
Unknown
Rincon Ridge, ne. of Santa Rosa
Comment
CAS-BOT-BC23674
Arctostaphylos columbiana
John Thomas Howell
1934-3-4
11769
Mendocino
Along Navarro River, 5 miles west of Navarro.
Comment
CAS-BOT-BC23692
Arctostaphylos columbiana
John Thomas Howell
1934-3-3
11753
Mendocino
6 miles south of Point Arena
Comment
CAS-BOT-BC23707
Arctostaphylos columbiana
John Thomas Howell
1934-3-4
11756
Mendocino
2 miles east of Mendocino
Comment
POM202852
Arctostaphylos columbiana
J. T. Howell
1934-3-4
11765
Mendocino
2 miles east of Mendocino City.
Comment
CAS-BOT-BC23559
Arctostaphylos crustacea
John Thomas Howell
1952-3-2
28297
Contra Costa
East end of Moraga Ridge summit
Comment
CAS-BOT-BC25136
Arctostaphylos crustacea subsp. crinita
John Thomas Howell
1944-6-11
19618
Santa Cruz
Sand hills 1 mile E of Felton
Comment
CAS-BOT-BC24970
Arctostaphylos edmundsii
John Thomas Howell
1952-3-4
28299
Monterey
Just s of Little Sur River. Topotype.
Comment
GH350328
Arctostaphylos glandulosa
J. T. Howell
1930-4-6
4676
Unknown
26 miles from Livermore on road to San Antonio Valley
Comment
SEINET8347398
Arctostaphylos glandulosa
T. Howell
1886-1
Unknown
Gasquet.
Comment
CAS-BOT-BC23356
Arctostaphylos glandulosa subsp. cushingiana
John Thomas Howell
1943-7-4
18272
Marin
West of Inverness
Comment
SBBG41732
Arctostaphylos glandulosa subsp. cushingiana
J. T. Howell
1970-3-31
46498
Monterey
Carmel River, Carmel Valley Village
Comment
CAS-BOT-BC23207
Arctostaphylos glandulosa subsp. glandulosa
John Thomas Howell
1930-5-18
5174
Los Angeles
Rocky slope, Pacoima Canyon, San Gabriel Mts.
Comment
POM180779
Arctostaphylos glandulosa subsp. glandulosa
J. T. Howell
1930-7-13
5351
Napa
On the edge of the Crater Country'
Comment
RSA127603
Arctostaphylos glandulosa subsp. glandulosa
J. T. Howell
1952-3-5
28304
Monterey
2 miles east of Carmel Valley community center.
Comment
UC1042311
Arctostaphylos glandulosa subsp. glandulosa
John Thomas Howell
1954-11-3
30137
Monterey
Arroyo Seco River Canyon Santa Lucia Mts.
Comment
CAS-BOT-BC24693
Arctostaphylos glandulosa subsp. mollis
John Thomas Howell
1928-2-18
3347
Los Angeles
On trail to Switzer's, Arroyo Seco, San Gabriel Mts.
Comment
CAS-BOT-BC39349
Arctostaphylos glauca
John Thomas Howell
1928-2-11
3343
Los Angeles
On trail between Haines Canyon and Mt. Lukens, San Gabriel Mts.
Comment
POM181143
Arctostaphylos hookeri subsp. hookeri
J. T. Howell
1931-5-21
6493
Monterey
Gibson Canyon, Carmel Highlands.
Comment
A350546
Arctostaphylos manzanita
J. T. Howell
1933-4-2
10952
Unknown
Serpentine Ridge, 2 miles east of Occidental
Comment
SEINET11989222
Arctostaphylos manzanita
J. T. Howell
1975-1
51104
Butte
about 2 mi from Paradise on Skyway to Chico
396
Comment
CAS-BOT-BC38972
Arctostaphylos manzanita subsp. elegans
John Thomas Howell
1930-8-24
5454
Lake
4 miles from Middletown on Adams Springs Road
Comment
CAS-BOT-BC38731
Arctostaphylos manzanita subsp. manzanita
John Thomas Howell
1930-3-23
4555
Napa
East of the Toll House near Mt. St. Helena
Comment
CAS-BOT-BC38817
Arctostaphylos manzanita subsp. manzanita
John Thomas Howell
1930-3-23
4567
Lake
Four miles from Middletown on road to Adams Springs
Comment
UCD52291
Arctostaphylos mewukka
John Thomas Howell
1976-4-2
51577
Plumas
In the Transition Life Zone; 2 miles northwest of Spring Garden.
1173
Comment
CAS-BOT-BC45550
Arctostaphylos nevadensis
John Thomas Howell
1925-6-10
1144
El Dorado
Eagle Lake Trail, Lake Tahoe Region.
2042
Comment
SD71281
Arctostaphylos pumila
John Thomas Howell
1968-4-18
Monterey
Near airport, about 4 mi. E of Monterey
Comment
UCD53743
Arctostaphylos pumila
John Thomas Howell
1965-6-15
41358
Monterey
Near the Monterey Airport on Salinas Road; about 4 miles east of Monterey.
Comment
A362314
Arctostaphylos stanfordiana subsp. hispidula
J. T. Howell
1933-4-2
10953
Unknown
2 miles east of Occidental
Comment
CAS-BOT-BC43930
Arctostaphylos tomentosa subsp. tomentosa
John Thomas Howell
1965-6-15
41328
Monterey
near summit of road between Pacific Grove and Carmel
Comment
SEINET11989235
Arctostaphylos truei
J. T. Howell
1975-1
51112
Butte
Skyway & Montana Drive, Paradise
610
Comment
UCD52615
Arctostaphylos viscida
John Thomas Howell
1975-6-15
51108
Butte
Skyway near Billie Road, Paradise, Butte County, Transition Zone.
609
Comment
UCD52616
Arctostaphylos viscida
John Thomas Howell
1975-6-15
51101
Butte
In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County.
396
Comment
UCD52621
Arctostaphylos viscida
John Thomas Howell
1975-6-15
51085
Butte
In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County.
396
Comment
SEINET7268632
Arctostaphylos viscida
J. T. Howell, G. H. True., Jr.
1968-5-13
44293
Tulare
Kern Plateau, Cherry Hill Road, Poison Meadow Creek Canyon
1981
Comment
CAS-BOT-BC46905
Arctostaphylos viscida subsp. mariposa
John Thomas Howell
1930-5-14
5071
Kern
east slope of the Greenhorn Range
1493
Comment
CAS-BOT-BC47136
Arctostaphylos viscida subsp. mariposa
John Thomas Howell
1962-7-8
38261
Kern
Black Mt., s. side. Greenhorn Mountains.
1432
Comment
CAS-BOT-BC47066
Arctostaphylos viscida subsp. viscida
John Thomas Howell; Gordon H. True
1968-6-9
44506
Placer
Alta.
1066
Comment
CAS-BOT-BC47384
Arctostaphylos viscida subsp. viscida
John Thomas Howell
1975-6-15
51097
Butte
about 2 miles from Paradise on Skyway to Chico
396
Comment
CAS-BOT-BC48208
Arctostaphylos viscida subsp. viscida
John Thomas Howell; Gordon H. True
1970-6-27
46900
Tulare
Tule River Canyon, 7 miles above Springville
1005
Comment
CAS-BOT-BC467181
Arenaria serpyllifolia var. serpyllifolia
John Thomas Howell
1963-6-5
39411
Tehama
Near Paynes Creek
Comment
CAS-BOT-BC467193
Arenaria serpyllifolia var. serpyllifolia
John Thomas Howell
1960-5-3
35276
Tuolumne
Sierra Nevada: Stanislaus River Canyon west of Columbia
Comment
CAS-BOT-BC137603
Aristida californica var. californica
John Thomas Howell
1928-3-11
3443
Unknown
Six miles southeast of Garnet Station, Coachella Valley, Colorado Desert.
Comment Read comments Aug 24 2019
SBBG29990
Aristida oligantha
J. T. Howell
1939-8-13
El Dorado
8 mi from Folsom on rd to Placerville
Comment
CAS-BOT-BC400432
Aristolochia californica
John Thomas Howell
1967-6-22
42644
Butte
3 miles ne. of Pulga Bridge - Canyon of the Feather River North Fork
Comment
CAS-BOT-BC295868
Arnica dealbata
John Thomas Howell
1960-8-21
36309
Shasta
Lassen Volcanic National Park. Sulphur Works
2133
Comment
CAS-BOT-BC82487
Arnica discoidea
John Thomas Howell
1955-7-8
30639
Monterey
Arroyo Seco Road near Escondido Camp, Santa Lucia Mts.
792
Comment
CAS-BOT-BC82679
Arnica longifolia
John Thomas Howell
1958-8-16
34480
Madera
On trail to Sadler Lake, near Isberg Lake
2987
Comment
CAS-BOT-BC82778
Arnica mollis
John Thomas Howell
1977-8-2
52466
Alpine
Silver Creek, about 1 mile northeast of Lake Alpine on Ebbetts Pass Road
2346
Comment
CAS-BOT-BC90064
Arnica nevadensis
John Thomas Howell
1944-8-14
s.n.
Tuolumne
Tuolumne Canyon above Glen Aulin
Comment
CAS-BOT-BC15217
Artemisia arbuscula subsp. arbuscula
John Thomas Howell
1934-6-13
12098 A
Modoc
Patterson Mill Road, Warner Mountains
1676
Comment
CAS-BOT-BC84978
Artemisia arbuscula subsp. arbuscula
John Thomas Howell
1939-8-8
15167
Siskiyou
Marble Mts., Black Mt.
Comment
CAS-BOT-BC84803
Artemisia douglasiana
John Thomas Howell
1962-9-22
38758
Kern
Sierra Nevada, Greenhorn Mountains - Kern Co. Park
1828
Comment
CAS-BOT-BC84805
Artemisia douglasiana
John Thomas Howell
1970-11-10
47561
Kern
Sierra Nevada, Rancheria Road at Rattlesnake Creek
670
Comment
CAS-BOT-BC90255
Artemisia douglasiana
John Thomas Howell
1930-10-5
5541
Sacramento
East bank of Sacramento River near Rio Vista
Comment
CAS-BOT-BC90290
Artemisia douglasiana
John Thomas Howell
1961-9-22
36721
Butte
Bank of Feather River, Oroville
53
Comment
CAS-BOT-BC93967
Artemisia douglasiana
John Thomas Howell
1936-8-24
12759
Trinity
Summit of Scott Mts. n. of Carrville
Comment
CAS-BOT-BC90646
Artemisia ludoviciana subsp. incompta
John Thomas Howell
1958-7-23
33809
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC90670
Artemisia ludoviciana subsp. incompta
John Thomas Howell
1941-8-1
16663
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC90753
Artemisia ludoviciana subsp. incompta
John Thomas Howell; Gordon H. True
1970-7-28
47024
Tulare
East side of Big Meadow on loop road south of North Manter Pass Trail, Kern Plateau
2377
Comment
CAS-BOT-BC90755
Artemisia ludoviciana subsp. incompta
John Thomas Howell; Gordon H. True
1967-9-19
43830
Tulare
Flood-plain of Kern River South Fork, Kennedy Meadows Campground, Kern Plateau
1859
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-BC97138
Artemisia rothrockii
John Thomas Howell
1945-9-24
21497
Tuolumne
Soda Springs, Tuolumne Meadows
Comment
CAS-BOT-BC97283
Artemisia tridentata subsp. parishii
John Thomas Howell
1950-11-9
27484
Los Angeles
3 miles S.W. of Newhall
Comment
CAS-BOT-BC97440
Artemisia tridentata subsp. tridentata
John Thomas Howell
1958-5-22
33150
Tulare
Kern River Canyon 6 miles south of Roads End P.O.
944
Comment
CAS-BOT-BC97448
Artemisia tridentata subsp. tridentata
John Thomas Howell
1942-8-5
17710
Tulare
Between Big Arroyo and Chagoopa Plateau
Comment
CAS-BOT-BC99288
Artemisia tridentata subsp. vaseyana
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-10
54432
Amador
Small lake on Carson Pass Road just west of Carson Spur near Kirkwood - Sierra Nevada
2407
Comment
CAS-BOT-BC65768
Aspidotis californica
John Thomas Howell
1930-10-12
5592
El Dorado
North Fork of Cosumnes River, 6.5 miles N. of Plymouth
Comment
CAS-BOT-BC65858
Aspidotis carlotta-halliae
John Thomas Howell
1967-3-5
42037
Marin
near Rattlesnake Camp, Mt. Tamalpais
335
Comment
CAS-BOT-BC99227
Aster
John Thomas Howell
1963-8-22
40279
Alpine
Sierra Nevada - Monitor Pass
2529
Comment
RSA44439
Aster ascendens
J. T. Howell
1947-8-16
24144
Inyo
Big Pine Lakes Trail.
2805
Comment
RSA14945
Aster lentus
J. T. Howell
1934-9-23
12571
Solano
Suisun Marshes at Benecia [Benicia] Junction
Comment Read comments Sep 26 2006
CAS-BOT-BC180487
Astragalus bolanderi
John Thomas Howell
1942-7-27
17290
Tulare
Deer Creek between timber Gap and Cliff Creek
Comment
CAS-BOT-BC178662
Astragalus claranus
John Thomas Howell
1931-4-19
6431
Sonoma
Grassy meadow, 12.5 miles from St. Helena on Spring Mountain Road to Santa Rosa
Comment
CAS-BOT-BC182660
Astragalus douglasii
John Thomas Howell
1933-4-22
11077
San Benito
Near San Benito
Comment
CAS-BOT-BC182863
Astragalus douglasii
John Thomas Howell
1957-4-29
32072
Monterey
Sandy flood plain of Salinas River, King City
Comment
NY674272
Astragalus gibbsii
J. T. Howell
1974-7-10
50515
Lassen
Sagebrush flat at the cemetery, Janesville
1295
Comment
CAS-BOT-BC187083
Astragalus lentiginosus var. antonius
John Thomas Howell
1947-7-18
23406
Los Angeles
Blue Ridge, San Gabriel Mts.
2590
Comment
UC421664
Astragalus lentiginosus var. coachellae
John Thomas Howell
1928-3-11
3439
Riverside
6 mi se Garnet Station (Colorado Desert); , se of Garnet Station
Comment
CAS-BOT-BC187233
Astragalus lentiginosus var. ineptus
John Thomas Howell
1963-7-10
39726
Alpine
0.5 mile west of Monitor Pass
2529
Comment
CAS-BOT-BC187242
Astragalus lentiginosus var. ineptus
John Thomas Howell
1947-8-6
23829
Inyo
Above Summit Lake, Big Pine Lakes
3413
Comment
CAS-BOT-BC187301
Astragalus lentiginosus var. kernensis
John Thomas Howell
1950-7-12
26756
Tulare
North end of Monache Meadows
2438
Comment
GH366327
Astragalus lentiginosus var. kernensis
J. T. Howell & G. H. True
1967-7-4
42972
Unknown
Troy Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC178116
Astragalus lentiginosus var. nigricalycis
John Thomas Howell
1931-3-20
5889
Kern
3 miles N of Devil's Den at Kings-Kern county line.
Comment
CAS-BOT-BC27683
Astragalus monoensis
John Thomas Howell
1938-8-10
14500
Mono
Near Crestview
Comment
UC1177235
Astragalus nuttallii var. virgatus
John Thomas Howell
1947-5-14
23159
Marin
McClure Beach
Comment
UCD105253
Astragalus purshii var. tinctus
John Thomas Howell
1962-5-22
37272
Tulare
Kern River Canyon above Roads End, Sierra Nevada.
1097
Comment
UCR88856
Astragalus sepultipes
J. T. Howell
1958-5-24
33315
Inyo
Sierra Nevada Mtns., Whitney Portal road
1982
Comment
RSA0006889
Astragalus whitneyi
J. T. Howell
1947-8-11
23998
Inyo
South end of Coyote Ridge.
3659
Comment
CAS-BOT-BC53681
Athyrium filix-femina var. californicum
John Thomas Howell
1958-7-28
34041
Fresno
Sierra Nevada - Between Blue Canyon and Tehipite Valley, Middle Fork of the Kings River
1341
Comment
CAS-BOT-BC170182
Atriplex canescens subsp. canescens
John Thomas Howell
1963-8-20
40112
Kern
South Fork Valley about 2 miles ne. of Weldon - Sierra Nevada
807
Comment
CAS-BOT-BC170194
Atriplex canescens subsp. canescens
John Thomas Howell
1927-7-29
2874
Orange
In hills on n. side of Santa Ana Canyon.
152
Comment
CAS-BOT-BC168576
Atriplex cordulata
John Thomas Howell; Gordon H. True
1967-7-6
43234
Tulare
About 4 1/2 miles east-northeast of Pixley
83
Comment
UC517437
Atriplex fruticulosa
John Thomas Howell
1926-5-22
1988
Merced
5 mi sw Merced (Merced Plains); , sw of Merced
Comment
OBI17317
Atriplex fruticulosa
John Thomas Howell
1948-6-14
24341
San Luis Obispo
N end of Carrizo Plain headwater of Bitterwater crk
Comment
CAS-BOT-BC170261
Atriplex hymenelytra
John Thomas Howell
1928-1-28
3289
Riverside
Thousand Palms, Colorado Desert
Comment
POM203147
Atriplex leucophylla
J. T. Howell
1933-10-8
11706
Marin
Pt. Reyes Peninsula
Comment
CAS-BOT-BC168463
Atriplex parishii var. subtilis
John Thomas Howell
1967-11-4
44075
Tulare
SE. corner. About 4.5 miles east-northeast of Pixley
83
Comment
UCD97665
Atriplex rosea
John Thomas Howell; Gordon H. True
1967-8-8
43594
Tulare
about 5 miles west of Chimney Meadow, Kern Plateau.
2346
Comment
UCD97666
Atriplex rosea
John Thomas Howell
1969-9-12
46087
El Dorado
near Camino.
975
Comment
CAS-BOT-BC176800
Atriplex spinifera
John Thomas Howell
1931-3-19
5860
Fresno
Near Coalinga
Comment
CAS-BOT-BC146163
Avena fatua
John Thomas Howell
1954-5-16
s.n.
El Dorado
Sierra Nevada. 4 miles west of Shingle Springs.
Comment
CAS-BOT-BC98614
Baccharis pilularis
John Thomas Howell; Gordon H. True
1972-6-29
48926
Contra Costa
Near Byron Hot Springs (site)
Comment
CAS-BOT-BC99601
Baccharis pilularis
John Thomas Howell
1981-10-14
54648
Sutter
Dean Ranch, Sutter Buttes
Comment
CAS-BOT-BC98206
Baccharis salicifolia
John Thomas Howell
1956-12-4
32002
Mariposa
Merced River Canyon 1 mile below South Fork confluence.
Comment
CAS-BOT-BC99727
Baccharis salicifolia
John Thomas Howell
1976-5-19
51771
Kern
Between Isabella Dam and Keysville, Greenhorn Mountains
822
Comment
RSA797
Baileya pleniradiata
J. T. Howell
1927-8-1
538
San Bernardino
Warren's Well, Mojave Desert
915
Comment
RSA798
Baileya pleniradiata
J. T. Howell
1927-7-9
299
San Bernardino
Near Box S Ranch, Mojave Desert.
915
Comment
CAS-BOT-BC106458
Balsamorhiza hookeri
John Thomas Howell
1962-6-18
37788
Plumas
Sierra Valley near Beckwourth - Sierra Nevada
1487
Comment
CAS-BOT-BC106475
Balsamorhiza sagittata
John Thomas Howell; Gordon H. True
1967-5-29
42332
Tulare
Sierra Nevada, Kern Plateau - west side of Chimney Meadow
1889
Comment
POM204439
Bassia hyssopifolia
J. T. Howell
1933-7-20
11444
San Joaquin
Bottom lands along San Joaquin River near Tracy.
Comment
RSA790
Bebbia juncea
J. T. Howell
1927-6-2
13
Orange
Sandstone Ridge, Botany Garden, RSA.
152
Comment
UCD56778
Beckmannia syzigachne
John Thomas Howell
1962-6-18
37747
Plumas
Plants of the Sierra Nevada. Sierra Valley near Beckwourth.
1487
Comment
CAS-BOT-BC100188
Bellis perennis
John Thomas Howell
1957-5-26
32443
San Francisco
North base of Lone Mt.
Comment
CAS-BOT-BC54222
Berberis aquifolium var. repens
John Thomas Howell
1934-6-11
11981
Modoc
Parker Creek, Warner Mts.
1584
Comment
CAS-BOT-BC413092
Bistorta bistortoides
John Thomas Howell
1943-8-5
19062
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC27856
Blennosperma nanum var. robustum
John Thomas Howell
1947-5-14
23153
Marin
Pt. Reyes Peninsula above McClure Beach
Comment
POM204103
Blepharipappus scaber
J. T. Howell
1934-6-10
11894
Lassen
Horse Lake
Comment
CAS-BOT-BC127887
Blepharizonia laxa
John Thomas Howell
1954-11-2
30118
Kern
Carneros Canyon, Temblor Range
Comment
CAS-BOT-BC16219
Boechera
John Thomas Howell
1949-8-8
26157
Tulare
Saddle between Rock and Crabtree Creeks.
3931
Comment
CAS-BOT-BC15791
Boechera acutina
John Thomas Howell
1937-7-23
13373
Siskiyou
South Fork of Salmon River near Big Flat.
1524
Comment
CAS-BOT-BC15854
Boechera arcuata
John Thomas Howell
1930-5-13
5026
Kern
Kern Canyon 7 miles above Kernville.
Comment
CAS-BOT-BC16295
Boechera howellii
John Thomas Howell
1941-7-22
16386
Fresno
Fresno - Inyo Counties. Mono Pass.
3657
Comment
CAS-BOT-BC14081
Boechera pauciflora
John Thomas Howell
1960-7-19
35637
Plumas
Lassen Volcanic National Park. Drakesbad.
1828
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-BC14129
Boechera peirsonii
John Thomas Howell
1947-7-25
23656
San Bernardino
San Bernardino Mountains. Whitewater Cirque. Mount San Gorgonio.
3352
Comment
CAS-BOT-BC14144
Boechera pendulocarpa
John Thomas Howell
1946-7-15
22368
Inyo
Rock Creek Lake Basin. Mosquito Flat.
3139
Comment
CAS-BOT-BC14324
Boechera platysperma
John Thomas Howell
1958-7-24
33878
Fresno
Sierra Nevada. Simpson Meadow. Middle Fork of the Kings River.
1828
Comment
CAS-BOT-BC14434
Boechera platysperma
John Thomas Howell
1950-7-22
27167
Tulare
Olancha Peak.
2895
Comment
CAS-BOT-BC14712
Boechera repanda
John Thomas Howell; Gordon H. True
1973-8-1
50218
Lassen
Sierra Nevada. Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville.
2164
Comment
GH378865
Boechera repanda
J. T. Howell & G. H. True
1966-7-13
41953
Unknown
Pipe Spring on Cherry Hill Road, west side of Big Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC25384
Boechera retrofracta
John Thomas Howell
1940-8-1
15785
Tulare
Between Reflection Lake and Harrison Pass.
Comment
CAS-BOT-BC25516
Boechera retrofracta
John Thomas Howell
1941-7-31
16582
Madera
Agnew Pass.
Comment
CAS-BOT-BC25545
Boechera retrofracta
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-12
54514
Mono
Sierra Nevada. Rock Creek road to Rock Creek Lake Basin.
2849
Comment
CAS-BOT-BC25633
Boechera retrofracta
John Thomas Howell
1960-7-21
27164
Tulare
Monache Mountain.
2590
Comment
CAS-BOT-BC25635
Boechera retrofracta
John Thomas Howell
1951-7-19
27949
Tulare
Mineral King and Vicinity. Monarch Lakes Trail.
2438
Comment
CAS-BOT-BC25818
Boechera stricta
John Thomas Howell
1941-7-31
16551
Madera
Agnew Pass Trail.
Comment
CAS-BOT-BC25900
Boechera suffrutescens
John Thomas Howell
1934-7-10
12537
Lassen
Between Harvey Valley and Patterson Flats.
Comment
CAS-BOT-BC25908
Boechera suffrutescens
John Thomas Howell
1961-6-20
36546
Shasta
Lassen Volcanic National Park. Anklin Meadows.
1874
Comment
CDA23855
Boerhavia coccinea
J. T. Howell
1977-3-1
52319
San Diego
Colorado Desert; Borrego Springs.
Comment
CAS-BOT-BC434507
Boerhavia diffusa
John Thomas Howell; R. C. Barneby
1954-5-9
29311
Fresno
At Piedra
170
Comment
POM259052
Boisduvalia glabella
J. T. Howell
1938-5-28
13836
Merced
Between Volta and Gustine.
Comment
CAS-BOT-BC28214
Bolboschoenus fluviatilis
John Thomas Howell
1961-9-25
36942
Plumas
Feather River bed, Portola.
1478
Comment
CAS-BOT-BC31011
Bolboschoenus maritimus
John Thomas Howell
1927-6-30
2618
Orange
Alkaline coastal plain 7 miles E of Long Beach.
15
Comment
CAS-BOT-BC95359
Bowlesia incana
John Thomas Howell
1957-4-27
32046
Monterey
11 miles SE of Carmel Valley
335
Comment
CAS-BOT-BC417605
Boykinia major
John Thomas Howell
1923-7-24
146
Mariposa
bed of Merced River at the Indian Bridge, Wawona
1219
Comment
POM196466
Boykinia occidentalis
John T. Howell
1927-8-18
3014
Monterey
Arroyo Seco River, Santa Lucia Camp, Santa Lucia Mtns.
610
Comment
CAS-BOT-BC145421
Brachypodium distachyon
John Thomas Howell
1966-6-9
41563
Marin
Just north of the John Thomas Howell Botanical Garden, Tiburon.
Comment
CAS-BOT-BC30323
Brassica nigra
John Thomas Howell
1946-6-29
s.n.
San Francisco
San Francisco. Golden Gate Park.
Comment
CAS-BOT-BC30325
Brassica nigra
John Thomas Howell
1957-6-16
32627
San Francisco
San Francisco. Embarcadero at Vallejo Street.
Comment
CAS-BOT-BC36601
Brassica nigra
John Thomas Howell
1957-6-16
32646
San Francisco
San Francisco. Third and Davidson Street.
Comment
CAS-BOT-BC36731
Brassica rapa
John Thomas Howell
1954-5-16
29618 a
El Dorado
Sierra Nevada. Shingle Springs.
426
Comment
CAS-BOT-BC36780
Brassica rapa
John Thomas Howell
1956-5-12
31370
San Francisco
San Francisco. Marin Street near Third Street.
Comment
CAS-BOT-BC36840
Brassica tournefortii
John Thomas Howell
1977-3-10
52322
San Diego
Colorado Desert. Borrego Springs.
182
Comment
CAS-BOT-BC484157
Brodiaea elegans var. elegans
John Thomas Howell
1958-8-17
34590
Madera
Granite Creek Campground
2133
Comment
CAS-BOT-BC484260
Brodiaea elegans var. elegans
John Thomas Howell; Gordon H. True
1971-5-26
47638
Placer
Northern limits of Lincoln
48
Comment
CAS-BOT-BC486549
Brodiaea terrestris subsp. kernensis
John Thomas Howell
1963-6-22
39572
Monterey
Priest Valley
685
Comment
CAS-BOT-BC144152
Bromus arenarius
John Thomas Howell
1958-8-2
34222
Fresno
Sierra Nevada. On zigzags of Copper Creek Canyon Trail.
1981
Comment
CAS-BOT-BC144218
Bromus arenarius
John Thomas Howell
1963-6-22
39593
Monterey
Parkfield Summit.
1066
Comment
CAS-BOT-BC149401
Bromus berteroanus
John Thomas Howell
1957-4-29
32106
Monterey
Summit of Mustang Grade.
822
Comment
CAS-BOT-BC148934
Bromus carinatus var. carinatus
John Thomas Howell
1957-5-26
32418
San Francisco
North base of Lone Mountain.
Comment
CAS-BOT-BC149180
Bromus carinatus var. carinatus
John Thomas Howell
1938-6-19
13912
Marin
Cacade Canyon, Mill Valley.
Comment
CAS-BOT-BC149221
Bromus carinatus var. carinatus
John Thomas Howell
1944-6-4
19544
Marin
Inverness Ridge west of Inverness.
Comment
CAS-BOT-BC149317
Bromus carinatus var. carinatus
John Thomas Howell; Gordon H. True
1967-7-11
43360
Plumas
Sierra Nevada. Southeast slope of Mount Hough.
2042
Comment
UC1177018
Bromus carinatus var. carinatus
John Thomas Howell
1947-5-8
23141
Marin
Sausalito
Comment
CAS-BOT-BC148822
Bromus carinatus var. marginatus
John Thomas Howell; Gordon H. True
1966-7-11
41694
Tulare
Sierra Nevada. Kern Plateau. Poison Meadow.
2286
Comment
CAS-BOT-BC148898
Bromus carinatus var. marginatus
John Thomas Howell
1962-7-10
38483
Kern
Sierra Nevada. Greenhorn Mountains. Shirley Meadows.
2011
Comment
UCD59081
Bromus carinatus var. marginatus
John Thomas Howell; Gordon H. True
1967-5-29
42381
Tulare
Kern Plateau. Sierra Nevada. Near north end of Lamont Meadow on road to Chimney Meadow.
1859
Comment
CAS-BOT-BC156184
Bromus catharticus
John Thomas Howell
1964-6-29
40783
San Luis Obispo
Cambria.
Comment
CAS-BOT-BC156211
Bromus catharticus
John Thomas Howell
1953-5-8
28955
Monterey
Carmel.
Comment
SBBG115911
Bromus catharticus
J. T. Howell
1958-5-29
33612
Inyo
Bishop
1264
Comment
CAS-BOT-BC155924
Bromus ciliatus
John Thomas Howell
1944-8-11
20318
Tuolumne
Tuolumne Meadows.
Comment
CAS-BOT-BC155760
Bromus diandrus
John Thomas Howell
1957-5-17
32276
San Francisco
San Francisco. Bayview Hills.
Comment
UCD59297
Bromus diandrus
John Thomas Howell
1961-6-21
36670
Plumas
Sierra Nevada. Greenville.
1097
Comment
CAS-BOT-BC155516
Bromus hallii
John Thomas Howell
1942-8-5
17675
Tulare
Between Big Arroyo and Chagoopa Plateau.
3048
Comment
CAS-BOT-BC155538
Bromus hallii
John Thomas Howell; Gordon H. True
1966-7-12
41851
Kern
Sierra Nevada. Kern Plateau. On road to Bartolas Country east of Little Cannell Meadow.
2194
Comment
CAS-BOT-BC155037
Bromus hordeaceus
John Thomas Howell
1963-5-18
39267
Monterey
2.5 miles south of Aromas.
60
Comment
CAS-BOT-BC155220
Bromus hordeaceus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-5-21
53574
Siskiyou
Yreka.
822
Comment
RSA118067
Bromus hordeaceus
J. T. Howell
1955-5-19
30199
Monterey
Avila Ranch, Santa Lucia Mountains, west of King City.
457
Comment
CAS-BOT-BC155346
Bromus japonicus
John Thomas Howell
1977-6-24
52417
Plumas
Sierra Nevada. Near confluence of Spanish and Indian Creeks.
929
Comment
CAS-BOT-BC162428
Bromus laevipes
John Thomas Howell; R. C. Barneby
1954-5-12
29461
Mariposa
Sierra Nevada. Trail to Hites Cove.
609
Comment
CAS-BOT-BC162349
Bromus madritensis
John Thomas Howell
1962-7-8
38325
Kern
Sierra Nevada. Greenhorn Mountains. 1.5 mile southast of Summit.
1524
Comment
RSA223389
Bromus marginatus
J. T. Howell
1963-5-18
39302
Monterey
2.5 miles south of Aromas.
61
Comment
CAS-BOT-BC162242
Bromus maritimus
John Thomas Howell
1957-9-1
32923
San Francisco
San Francisco. Sutro Heights above Point Lobos.
Comment
CAS-BOT-BC162253
Bromus maritimus
John Thomas Howell
1945-6-12
20958
Marin
Point Reyes Peninsula. Near Radio Station.
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-BC161584
Bromus sterilis
John Thomas Howell
1949-4-6
25305
Sonoma
Along road southwest of Sonoma.
Comment
CAS-BOT-BC161419
Bromus tectorum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49199
Lassen
Sierra Nevada. Elysian Valley, northwest of Janesville.
1325
Comment
CAS-BOT-BC185382
Bromus vulgaris
John Thomas Howell
1937-7-23
13364
Siskiyou
South Fork of Salmon River near Big Flat.
1524
Comment
RSA224262
Bryonia dioica
J. T. Howell
1957-6-21
32691 a
San Francisco
Golden Gate Park, near Stow Lake, San Francisco
Comment
JEPS30760
Cakile maritima
John Thomas Howell
1943-10-3
19333
Marin
just above high tide line Muir Beach
Comment
UC710607
Cakile maritima
John Thomas Howell
1943-10-3
19333
Marin
Muir Beach
Comment
CDA62
Cakile maritima
J. T. Howell
1943-10-3
19333
Marin
Muir Beach.
Comment
CAS-BOT-BC185348
Calamagrostis canadensis
John Thomas Howell
1960-7-20
35722
Plumas
Lassen Volcanic National Park.
1828
Comment
CAS-BOT-BC185241
Calamagrostis koelerioides
John Thomas Howell
1943-8-10
19270
Glenn
Black Butte.
Comment
CAS-BOT-BC185173
Calamagrostis nutkaensis
John Thomas Howell
1943-5-30
18194
Marin
Azalea Flat, Mount Tamalpais.
Comment
GH341578
Calamagrostis nutkaensis
J. T. Howell
1943-5-30
18194
Unknown
Azalea Flat, Mt. Tamalpais
Comment
CAS-BOT-BC185059
Calamagrostis purpurascens
John Thomas Howell
1949-8-9
26189
Tulare
Cirque Peak.
3733
Comment
UCD57713
Calamagrostis purpurascens
John Thomas Howell
1942-7-31
17472
Tulare
Mt. Kaweah.
Comment
CAS-BOT-BC438439
Calandrinia ciliata
John Thomas Howell
1964-4-28
40572
Mariposa
Just south of Morman Bar on road to Ben Hur
548
Comment
CAS-BOT-BC438484
Calandrinia ciliata
John Thomas Howell; H. Keith Wagnon
1980-5-27
53631
Plumas
About 1.5 miles northwest of Almanor (near intersection of Highway 89 and Humboldt Road)
1389
Comment
GH356724
Calocedrus decurrens
J. T. Howell
1962-9-22
38781
Unknown
Cooks Peak, Greenhorn Mts.
2072
Comment
CAS-BOT-BC132249
Calochortus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-1
53762
Tulare
Kern Plateau, upper part of Brush Creek Canyon on Cherry Hill Road
1767
Comment
CAS-BOT-BC487933
Calochortus kennedyi
John Thomas Howell
1927-6-11
2499
San Bernardino
Mojave Desert, 12 miles south-east of Victorville
914
Comment
CAS-BOT-BC490178
Calochortus leichtlinii
J. T. Howell
1965-8-24
2533 A
Nevada
Sand Ridge, 2 1/2 miles north east of Grouse Ridge Lookout
2255
Comment
CAS-BOT-BC492612
Calochortus monophyllus
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52954
Calaveras
Glencoe
822
Comment
CAS-BOT-BC494066
Calochortus venustus
John Thomas Howell
1930-5-13
5055
Kern
Rocky wash, Kern Canyon, 7miles above Kernville
844
Comment
CAS-BOT-BC273445
Calycadenia mollis
John Thomas Howell
1938-5-29
13854
Madera
Raymond
289
Comment
SEINET7379698
Calycadenia multiglandulosa subsp. bicolor
J. T. Howell
1976-8-1
52046
El Dorado
Sierra Nevada, Serpentine hills, Cameron Park about 3 miles west of Shingle Springs
427
Comment
CAS-BOT-BC106084
Calycadenia oppositifolia
John Thomas Howell
1955-6-15
30509
Butte
West Branch of North Fork of Feather River
182
Comment
CAS-BOT-BC275439
Calycadenia truncata subsp. microcephala
John Thomas Howell
1945-6-19
21034
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC32308
Calystegia collina subsp. oxyphylla
John Thomas Howell
1945-6-18
20985
Lake
Near Glenbrook
Comment
CAS-BOT-BC436406
Calystegia subacaulis
John Thomas Howell
1946-5-25
21935
Marin
Greenbrae HIlls
Comment
CAS-BOT-BC218884
Camissonia
John Thomas Howell; Gordon H. True
1969-5-13
45622
Kern
Open brushy slope, Spanish Needle Creek road to Lamont Meadow
1280
Comment
RSA2595
Camissonia bistorta
J. T. Howell
1928-7-9
1059
Riverside
Temescal Canyon, 6 miles south of Glen Ivy
335
Comment
RSA504
Camissonia bistorta
J. T. Howell
1928-4-7
898
Orange
Bee Canyon, Rancho Santa Ana
152
Comment
RSA506
Camissonia boothii subsp. desertorum
J. T. Howell
1927-6-12
122
San Bernardino
Mojave Desert. Deadman s Point
915
Comment
POM181149
Camissonia graciliflora
J. T. Howell
1931-3-22
5956
Monterey
Stone Canyon.
Comment
JEPS33689
Camissoniopsis bistorta
John Thomas Howell
1928-3-20
3456
Los Angeles
Vermont Canyon Los Angeles, Griffith Park
Comment
CAS-BOT-BC37207
Capsella bursa-pastoris
John Thomas Howell; Gordon H. True
1968-5-14
44355
Tulare
Sierra Nevada. Kern Plateau. Cherry Hill Road at Rincon Trail, Brush Creek Canyon.
1463
Comment
CAS-BOT-BC37272
Cardamine breweri
John Thomas Howell
1958-7-23
33798
Fresno
Sierra Nevada. Middle Fork of the Kings River. Simpson Meadow.
1828
Comment
CAS-BOT-BC37448
Cardamine californica
John Thomas Howell
1960-3-26
35198
Kern
Sierra Nevada. Near Delonegha Hot Springs. Kern River Canyon.
Comment
CAS-BOT-BC37980
Cardamine oligosperma
John Thomas Howell
1964-6-30
40876
San Luis Obispo
Cambria.
Comment
CAS-BOT-BC37834
Cardamine oligosperma
John Thomas Howell; Gordon H. True
1978-4-4
52745
Amador
Sierra Nevada. Near Boston House on road to Wallace.
Comment
CAS-BOT-BC384782
Cardionema ramosissimum
John Thomas Howell
1964-4-18
40431
Monterey
Robinson Canyon, Santa Lucia Mts.
Comment
CAS-BOT-BC281749
Carduus pycnocephalus
John Thomas Howell
1956-5-19
31407
San Francisco
Near Third and Army Streets, San Francisco
Comment
UC750591
Carduus pycnocephalus subsp. pycnocephalus
J. Thomas Howell
1946-5-4
21754
Marin
near Burdell (along Redwood Highway); Redwood Highway
Comment
POM215025
Carduus tenuiflorus
J. T. Howell
1930-6-15
5298
Alameda
Berkeley Hills
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-BC18284
Carex
John Thomas Howell
1962-7-10
38445
Kern
Sierra Nevada. Greenhorn Mountains, 1.5 miles south of Summit.
1950
Comment
CAS-BOT-BC18295
Carex
John Thomas Howell
1972-4-25
48711
Mariposa
Sierra Nevada. Yosemite Valley. Bank of Merced River opposite Bridal Veil Falls.
1219
Comment
CAS-BOT-BC18521
Carex abrupta
John Thomas Howell
1946-7-14
22329
Inyo
Rock Creek Lake Basin. Mosquito Flat.
3139
Comment
CAS-BOT-BC20330
Carex abrupta
John Thomas Howell
1950-7-14
26862
Tulare
Sierra Nevda. South Fork of Kern River. Bakeoven Meadows.
2468
Comment
CAS-BOT-BC17790
Carex amplifolia
John Thomas Howell
1943-8-9
19221
Glenn
Plaskett Meadows.
1828
Comment
CAS-BOT-BC17984
Carex aquatilis
John Thomas Howell
1947-8-13
24055
Inyo
Big Pine Creek Trail.
2895
Comment
CAS-BOT-BC18998
Carex athrostachya
John Thomas Howell
1942-7-25
17147
Tulare
Mineral King.
Comment
CAS-BOT-BC19045
Carex athrostachya
John Thomas Howell
1938-8-12
14552
Tuolumne
Tuolumne Meadows.
Comment
CAS-BOT-BC19682
Carex athrostachya
John Thomas Howell
1946-6-13
22025
Marin
Chileno Valley.
Comment
SEINET7550699
Carex athrostachya
John Thomas Howell
1934-6-12
12030
Modoc
Plum Valley, Warner Mts.
Comment
CAS-BOT-BC19140
Carex aurea
John Thomas Howell
1949-7-26
25780
Tulare
Sierra Nevada. Whitney Meadows.
2956
Comment
RSA201275
Carex aurea
J. T. Howell
1960-7-18
35508
Plumas
Drakesbad
1677
Comment
CAS-BOT-BC19566
Carex bolanderi
John Thomas Howell
1930-7-27
5390
Sonoma
1 mile north of Fort Ross.
Comment
CAS-BOT-BC19465
Carex bolanderi
John Thomas Howell; R. C. Barneby
1954-5-12
29467
Mariposa
Sierra Nevada. Trail to Hite Cove.
609
Comment
UCD140156
Carex bolanderi
John Thomas Howell
1960-6-17
35491
Placer
Lassen Volcanic National Park, Drakesbad.
1676
Comment
CAS-BOT-BC19610
Carex brainerdii
John Thomas Howell
1944-7-15
19799
Glenn
Canyon of Snow Basin Creek.
Comment
SEINET13344652
Carex brainerdii
J. T. Howell, Gordon H. True
1967-5-7
42186
Plumas
Sierra Nevada, Injin Jim Campground [now James Lee Campground] at confluence of Granite Creek and North Fork of Feather River
610
Comment
CAS-BOT-BC19675
Carex brainerdii
John Thomas Howell
1954-6-5
29933
Tuolumne
Sierra Nevada. Near Strawberry on old road to Sonora Pass.
Comment
CAS-BOT-BC34051
Carex brevicaulis
John Thomas Howell
1952-3-4
28298
Monterey
Just south of Little Sur.
Comment
CAS-BOT-BC34148
Carex breweri
John Thomas Howell
1944-8-10
20288
Mono
Dana Plateau.
Comment
CAS-BOT-BC34164
Carex breweri
John Thomas Howell
1940-8-1
15830
Tulare
Between Reflection Lake and Harrison Pass.
Comment
CAS-BOT-BC34250
Carex capitata
John Thomas Howell
1947-8-15
24122
Inyo
Big Pine Lakes. Fifth Lake.
3352
Comment
CAS-BOT-BC34258
Carex capitata
John Thomas Howell
1942-8-5
17724
Tulare
Chagoopa Plateau. Kaweah Meadows.
Comment
CAS-BOT-BC34295
Carex congdonii
John Thomas Howell
1946-7-24
22692
Fresno
Mono Mesa above Gold Lake.
Comment
CAS-BOT-BC34342
Carex congdonii
John Thomas Howell
1942-7-28
17334
Tulare
Between Pinto Lake and Black Rock Pass.
Comment
CAS-BOT-BC34369
Carex congdonii
John Thomas Howell
1944-8-13
20439
Tuolumne
Between Dog Lake and Tuolumne Meadows.
Comment
RSA51983
Carex congdonii
J. T. Howell
1949-8-8
26153
Tulare
Above Sky Blue Lake.
3659
Comment
RSA0000209
Carex danaensis
J. T. Howell
1938-8-11
14546
Tuolumne
Mt. Dana.
3811
Comment
CAS-BOT-BC34430
Carex davyi
John Thomas Howell
1946-8-31
22954
El Dorado
Northeast of Gilmore Lake.
2682
Comment
CAS-BOT-BC34463
Carex deflexa var. boottii
John Thomas Howell
1940-8-9
16085
Fresno
Bullfrog Lake.
Comment
CAS-BOT-BC34465
Carex deflexa var. boottii
John Thomas Howell
1946-7-22
22662
Fresno
Pioneer Basin.
3291
Comment
CAS-BOT-BC34844
Carex deflexa var. boottii
John Thomas Howell
1947-8-7
23878
Inyo
Big Pines Lakes. West of Sixth Lake.
3413
Comment
CAS-BOT-BC18979
Carex densa
John Thomas Howell
1947-6-26
23298
Sonoma
Cunningham Marsh.
Comment
CAS-BOT-BC34833
Carex densa
John Thomas Howell
1945-6-20
21125
Lake
Bartlett Mountain. Between Pinnacle Rock and Low Gap.
Comment
CAS-BOT-BC35007
Carex densa
John Thomas Howell
1946-5-4
21729
Marin
Near Dillon Beach.
Comment
CAS-BOT-BC35026
Carex densa
John Thomas Howell
1946-6-2
s.n.
Marin
Mt. Tamalpais. Potrero Meadow.
Comment
CAS-BOT-BC34835
Carex densa
John Thomas Howell
1943-5-11
18024
Lake
1 mile north of Kelseyville.
Comment
RSA216167
Carex densa
J. T. Howell
1966-4-30
41523
Marin
John Thomas Howell Botanical Garden, Tiburon.
Comment
CAS-BOT-BC20588
Carex douglasii
John Thomas Howell
1947-8-16
24147
Inyo
Big Pine Lakes Trail.
2804
Comment
CAS-BOT-BC20071
Carex echinata
John Thomas Howell
1958-8-2
34173
Fresno
Sierra Nevada. Copper Creek Canyon. Tent Meadow (lower).
2316
Comment
RSA52257
Carex echinata subsp. echinata
J. T. Howell
1946-9-1
22962
El Dorado
Echo Summit.
2256
Comment
CAS-BOT-BC19955
Carex exsiccata
John Thomas Howell
1946-6-13
22032
Marin
Chileno Valley.
Comment
CAS-BOT-BC19979
Carex feta
John Thomas Howell
1974-7-10
50557
Lassen
Sierra Nevada. Elysian Valley.
1325
Comment
GH274469
Carex feta
J. T. Howell
1944-8-18
20706
Unknown
Tuolumne Big Trees
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-BC34002
Carex filifolia var. filifolia
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49194
Lassen
Sierra Nevada. Elysian Valley northwest of Janesville.
1325
Comment
RSA98034
Carex fissuricola
J. T. Howell
1951-7-18
27920
Tulare
West side, Franklin Pass, Mineral King and vicinity.
3354
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-BC21305
Carex fracta
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49451
Lassen
Sierra Nevada. Elysian Valley, west of Janesville.
1325
Comment
SD130382
Carex fracta
John Thomas Howell
1963-7-12
39864
El Dorado
Sierra Nevada; Transition Zone forest; 3 miles sothwest of Twin Bridges on road to Kyburz.
1676
Comment
CAS-BOT-BC20698
Carex fracta
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-22
54114
Plumas
Sierra Nevada. 10.6 miles northeast of La Porte on road to Quincy.
1889
Comment
CAS-BOT-BC20886
Carex globosa
John Thomas Howell
1933-4-30
11193
Marin
North side of Mt. Tamalpais.
Comment
SEINET7559870
Carex globosa
John Thomas Howell
1942-4-19
16946
Marin
Carson Ridge, Mt Tamalpais.
Comment
RSA52314
Carex harfordii
J. T. Howell
1949-5-25
25335
Marin
Point Reyes Peninsula.
Comment
CAS-BOT-BC21795
Carex hassei
John Thomas Howell
1950-7-19
27089
Tulare
North end of Hessian Meadows.
2590
Comment
CAS-BOT-BC22299
Carex hassei
John Thomas Howell
1961-6-20
36577
Tehama
Bluff Falls.
1981
Comment
CAS-BOT-BC21002
Carex helleri
John Thomas Howell
1949-7-20
25550
Tulare
Sierra Nevada. Sky Blue Lake.
3505
Comment
CAS-BOT-BC22215
Carex helleri
John Thomas Howell
1947-8-11
24016
Inyo
South end of Coyote Ridge.
3657
Comment
CAS-BOT-BC21979
Carex heteroneura
John Thomas Howell
1947-7-22
23514
San Bernardino
South Fork, Santa Ana River. San Bernardino Mountains.
2377
Comment
CAS-BOT-BC22071
Carex heteroneura
John Thomas Howell
1944-8-5
19953
Tuolumne
Tuolumne Meadows. Near Parsons Lodge.
Comment
CAS-BOT-BC146667
Carex hirtissima
John Thomas Howell
1945-6-20
21126
Lake
Between Pinnacle Rock and Low Gap, Bartlett Mountain
Comment
POM248614
Carex hirtissima
J. T. Howell, Alice Eastwood
1938-5-17
5681
Lake
Elk Mountain Ranger Station
Comment
CAS-BOT-BC28142
Carex hoodii
John Thomas Howell
1946-7-14
22321
Inyo
Mosquito Flat, Rock Creek Lake Basin.
3139
Comment
SEINET12879853
Carex illota
J. T. Howell
1938-1
14577
Unknown
Comment
CAS-BOT-BC35511
Carex jonesii
John Thomas Howell
1947-7-22
23501
San Bernardino
South Fork, Santa Ana River, San Bernardino Mountains
2377
Comment
CAS-BOT-BC35532
Carex jonesii
John Thomas Howell
1941-7-31
16571
Madera
Agnew Pass Trail
Comment
UCD140487
Carex laeviculmis
John Thomas Howell; Gordon H. True
1970-5-27
46532
El Dorado
Blodgett Experimental Forest.
1280
Comment
HSC7137
Carex lanuginosa
J. T. Howell, J. W. Stacey
1937-6-6
13041
Sonoma
Pitkin Marsh.
Comment
CAS-BOT-BC31171
Carex lemmonii
John Thomas Howell
1957-6-13
32621
Sonoma
Pitkin Marsh.
Comment
CAS-BOT-BC31196
Carex lemmonii
John Thomas Howell; Gordon H. True
1970-7-30
47182
Tulare
SW end of Big Meadow just E of Cherry Hill Road. Kern Plateau.
2377
Comment
CAS-BOT-BC28541
Carex lenticularis var. impressa
John Thomas Howell
1942-8-1
17561
Tulare
Moraine Lake.
Comment
CAS-BOT-BC28432
Carex lenticularis var. lipocarpa
John Thomas Howell
1937-7-22
13255
Siskiyou
South Fork of Salmon River near Big Flat.
1524
Comment
CAS-BOT-BC31408
Carex leporinella
John Thomas Howell
1941-8-5
16768
Madera
Near Garnet Lake.
2956
Comment
CAS-BOT-BC31803
Carex microptera
John Thomas Howell
1949-7-26
25791
Tulare
Golden Trout Creek.
2941
Comment
CAS-BOT-BC31805
Carex microptera
John Thomas Howell
1942-8-1
17545
Tulare
Sky Parlor Meadow. Chagoopa Plateau.
Comment
CAS-BOT-BC31915
Carex microptera
John Thomas Howell
1948-7-25
25002
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC32022
Carex multicaulis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-5-20
53502
Trinity
Ca 6 mi SW of Trinity Center on road to Weaverville.
883
Comment
CAS-BOT-BC119986
Carex multicostata
John Thomas Howell
1951-7-20
27992
Tulare
Farewell Gap Trail.
2895
Comment
CAS-BOT-BC23422
Carex multicostata
John Thomas Howell
1937-7-21
13199
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC32253
Carex multicostata
John Thomas Howell
1946-7-14
22317
Inyo
Mosquito Flat, Rock Creek Lake Basin.
3139
Comment
CAS-BOT-BC32255
Carex multicostata
John Thomas Howell
1947-8-9
23952 A
Inyo
Seventh Lake, Big Pine Lakes.
3413
Comment
CAS-BOT-BC119699
Carex nervina
John Thomas Howell
1941-7-31
16563
Madera
Agnew Pass Trail.
Comment
CAS-BOT-BC119621
Carex nigricans
John Thomas Howell
1949-7-20
25554
Tulare
Sky Blue Lake
3505
Comment
CAS-BOT-BC119652
Carex nigricans
John Thomas Howell
1949-7-24
25716
Tulare
Above Primrose Lake.
3566
Comment
UC904989
Carex nigricans
John Thomas Howell
1949-7-20
25554
Tulare
Sky Blue Lake Sierra Nevada
3505
Comment
RSA0014632
Carex orestera
J. T. Howell
1949-8-5
26031
Tulare
Army Pass.
3506
Comment
CAS-BOT-BC119289
Carex ovalis
John Thomas Howell
1938-7-3
13965
Sonoma
Pitkin Marsh
Comment
CAS-BOT-BC118932
Carex pellita
John Thomas Howell
1952-6-15
28359
Siskiyou
Swamp, 2 mi W of Montague.
Comment
CAS-BOT-BC118943
Carex pellita
John Thomas Howell
1945-8-14
21410
Sonoma
Perry marsh.
Comment
CAS-BOT-BC119084
Carex phaeocephala
John Thomas Howell
1947-8-5
23770
Inyo
Fifth Lake, Big Pine Lakes.
3352
Comment
CAS-BOT-BC119092
Carex phaeocephala
John Thomas Howell
1946-7-24
22701
Inyo
Mono Mesa
3657
Comment
SEINET10713299
Carex phaeocephala
John Thomas Howell
1942-8-7
Howell 17815 A
Tulare
Columbine Lake.
Comment
CAS-BOT-BC118853
Carex praeceptorum
John Thomas Howell
1949-7-31
25961
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC118582
Carex praegracilis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-15
53775
Tulare
Pipe Spring, W side of Big Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC118741
Carex preslii
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49469
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC118709
Carex proposita
John Thomas Howell
1942-7-29
17403
Tulare
Little Five Lakes Basin.
Comment
CAS-BOT-BC117971
Carex rossii
John Thomas Howell
1944-7-14
19782
Glenn
Plaskett Meadows.
Comment
CAS-BOT-BC117980
Carex rossii
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-28
53169
Alpine
West base of Ebbetts Peak.
2743
Comment
SEINET958236
Carex rossii
John Thomas Howell
1949-1
22698
Inyo
Mono Mesa.
3658
Comment
RSA0079914
Carex rossii
John Thomas Howell
1944-8-17
20682
Tuolumne
Tuolumne Meadows.
Comment
SEINET8125521
Carex rossii
J. T. Howell
1944-1
19782
Unknown
Comment
SEINET958238
Carex rossii
J. T. Howell
1946-1
22323
Inyo
Mesquito Flat. Rock Creek Lake Basin.
3139
Comment Read comments May 28 2015
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-BC117918
Carex scabriuscula
John Thomas Howell
1936-8-24
12725
Trinity
Scott Mountain summit N of Carrville.
Comment
CAS-BOT-BC118263
Carex scopulorum var. bracteosa
John Thomas Howell; Gordon H. True
1968-7-18
4441
Mono
Basin at N end of Saddlebag Lake, head of Lee Vining Creek.
3048
Comment
CAS-BOT-BC118278
Carex scopulorum var. bracteosa
John Thomas Howell
1949-7-19
25490
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC118296
Carex scopulorum var. bracteosa
John Thomas Howell
1944-8-6
20040
Tuolumne
Dog Lake
Comment
CAS-BOT-BC28317
Carex scopulorum var. bracteosa
John Thomas Howell
1946-7-23
22677
Fresno
Fourth Recess
3048
Comment
CAS-BOT-BC28252
Carex scopulorum var. bracteosa
John Thomas Howell
1943-7-24
18753
Nevada
Horse Range Valley
Comment
CAS-BOT-BC117424
Carex senta
John Thomas Howell; R. C. Barneby
1954-5-11
29401
Madera
Peckimpah Creek.
914
Comment
CAS-BOT-BC117561
Carex serratodens
John Thomas Howell
1945-6-19
21019
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC117694
Carex simulata
John Thomas Howell
1951-8-21
28252
Sierra
5 miles from Calpine on road to Blairsen.
1524
Comment
CAS-BOT-BC117135
Carex spectabilis
John Thomas Howell
1947-8-7
23874
Inyo
Big Pine Lakes, West of Sixth Lake.
3413
Comment
CAS-BOT-BC117228
Carex spectabilis
John Thomas Howell
1944-8-7
20068
Tuolumne
Tuolumne Meadows.
Comment
SEINET7575712
Carex spectabilis
John Thomas Howell
1939-8-8
15189
Siskiyou
Black Mt, Marble Mts.
Comment
CAS-BOT-BC116947
Carex straminiformis
John Thomas Howell
1944-8-16
20662
Mono
Mono Pass
Comment
CAS-BOT-BC116968
Carex straminiformis
John Thomas Howell
1942-7-28
17355
Tulare
East side Black Rock Pass.
Comment
SEINET8149037
Carex straminiformis
J. T. Howell
1943-1
18795
Unknown
Comment
UCD140872
Carex subbracteata
John Thomas Howell
1957-5-17
32269
San Francisco
Bayview Hills.
Comment
RSA201415
Carex subbracteata
J. T. Howell
1957-5-28
32516
Unknown
Northwest side of Lone Mt. San Francisco.
Comment Read comments Jun 10 2012
RSA88836
Carex subbracteata
J. T. Howell
1938-5-1
13783
San Mateo
Near South San Francisco.
Comment
SEINET7577065
Carex subbracteata
John Thomas Howell
1938-5-1
13778
San Mateo
Near South San Francisco.
Comment
CAS-BOT-BC116780
Carex subbracteata var. subbracteata
John Thomas Howell
1947-6-5
23238
Sonoma
Cunningham Marsh.
Comment
CAS-BOT-BC114994
Carex subfusca
John Thomas Howell
1962-6-18
37752
Plumas
Sierra Valley near Beckwourth.
1487
Comment
CAS-BOT-BC115746
Carex subfusca
John Thomas Howell
1944-8-14
20483
Tuolumne
Tuolumne Canyon above Glen Aulin
Comment
CAS-BOT-BC115769
Carex subfusca
John Thomas Howell
1942-7-27
17295
Tulare
Deer Creek between Timber Gap and Cliff Creek.
Comment
CAS-BOT-BC115926
Carex subfusca
John Thomas Howell
1947-7-25
23676
San Bernardino
San Bernardino Mountains. Mt. San Gorgonio
3505
Comment
CAS-BOT-BC116596
Carex subfusca
John Thomas Howell
1938-8-13
14576
Mariposa
Snow Flat
Comment
CAS-BOT-BC116639
Carex subfusca
John Thomas Howell; Gordon H. True
1991-7-15
48607
Kern
Bartolas Spring on North Fork of Bartolas Creek.
2133
Comment
RSA118057
Carex subfusca
J. T. Howell
1955-7-8
30629
Monterey
Santa Lucia Camp, Arroyo Seco River.
610
Comment
UC710440
Carex subfusca
John Thomas Howell
1943-7-14
18299
Nevada
near Norden (w side of Donner Pass)
2133
Comment
CAS-BOT-BC115774
Carex subfusca
John Thomas Howell; Gordon H. True
1970-7-27
46921
Tulare
Forest Border of Big Meadow, on the E side at Joughin Camp
2377
Comment
RSA97965
Carex subfusca
J. T. Howell
1951-6-27
27600
Plumas
McRae Meadow.
1982
Comment
CAS-BOT-BC9361
Carex subnigricans
John Thomas Howell
1944-8-7
20054
Tuolumne
Tuolumne Meadows
Comment
CAS-BOT-BC9375
Carex subnigricans
John Thomas Howell
1949-7-19
25505
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC115693
Carex tompkinsii
John Thomas Howell
1960-6-6
35372
Fresno
1/2 mi E of Boyden Cave, Kings Canyon.
975
Comment
UC1147790
Carex tumulicola
John Thomas Howell
1937-5-23
13011
San Francisco
Presidio San Francisco
Comment
CAS-BOT-BC115409
Carex utriculata
John Thomas Howell
1951-6-27
27605
Plumas
McRae Meadow.
1981
Comment
CAS-BOT-BC115258
Carex vernacula
John Thomas Howell
1944-8-15
20560
Tuolumne
Mt. Conness
3657
Comment
CAS-BOT-BC115275
Carex vernacula
John Thomas Howell
1949-7-25
25728
Tulare
Siberian Pass Creek.
3352
Comment
CAS-BOT-BC115033
Carex vesicaria
John Thomas Howell; Gordon H. True
1970-6-26
46886
Tulare
Dry Lake on Cherry Hill Road S of Big Meadow.
2346
Comment
SEINET4410122
Carpenteria californica
J. T. Howell
1954-1
11429
Unknown
Comment
RSA44183
Cassiope mertensiana subsp. californica
J. T. Howell
1947-8-7
23854
Inyo
West of Sixth Lake, Big Pine Lakes.
3415
Comment
RSA128028
Castilleja applegatei subsp. martinii
J. T. Howell
1957-4-29
32094
Monterey
Just east of summit of Mustang Grade. Topotype.
793
Comment
CAS-BOT-BC249579
Castilleja applegatei subsp. pinetorum
John Thomas Howell; Gordon H. True
1971-7-15
48594
Kern
Near end of Cherry Hill Road at Bartolas Creek, Kern Plateau
2103
Comment
RSA88399
Castilleja applegatei subsp. pinetorum
J. T. Howell
1951-6-28
27715
Plumas
Eureka Peak.
2195
Comment
CAS-BOT-BC255509
Castilleja applegatei var. pinetorum
John Thomas Howell
1958-7-24
33879
Fresno
Simpson Meadow, Middle Fork of the Kings River, Sierra Nevada
1828
Comment
POM180790
Castilleja foliolosa
J. T. Howell
1930-7-20
5383
Marin
Mt. Tamalpais on se. side along Wheeler Trail.
Comment
CAS-BOT-BC243839
Castilleja latifolia
John Thomas Howell
1933-4-9
10964
San Mateo
Granada
Comment
CAS-BOT-BC243859
Castilleja latifolia
John Thomas Howell
1930-7-27
5401
Sonoma
1 mile north of Fort Ross
Comment
CAS-BOT-BC32615
Castilleja latifolia subsp. insularis
John Thomas Howell
1931-4-11
6251
Santa Barbara
Santa Cruz Island. Valle del Medio
Comment
RSA437
Castilleja linariifolia
J. T. Howell
1927-8-1
550
San Bernardino
Morongo Valley.
915
Comment
RSA46749
Castilleja linariifolia
J. T. Howell
1934-6-10
11885
Lassen
12 miles N of Susanville, on road to Horse Lake.
Comment
JEPS58953
Castilleja minor subsp. spiralis
John Thomas Howell
1947-6-15
23249
Marin
near Bootjack cypresses; Mt. Tamalpais
Comment
POM180613
Castilleja wightii
J. T. Howell
1930-6-8
5281
Sonoma
8.5 miles north of Bodega Bay.
Comment
JEPS27096
Caulanthus amplexicaulis
John Thomas Howell
1927-7-10
2766
San Bernardino
below Big Bear Lake; San Bernardino Mts., below Big Bear Lake
1828
Comment
RSA66820
Caulanthus cooperi
J. T. Howell
1930-5-13
4952
Kern
Red Rock Canyon
Comment
CAS-BOT-BC41050
Caulanthus flavescens
John Thomas Howell
1931-3-29
6023
San Benito
11 miles from Hernandez on road to San Benito.
Comment
CAS-BOT-BC40530
Caulanthus lasiophyllus
John Thomas Howell
1928-4-1
3626
Inyo
Black Mountain. 2 miles east of Bradbury Well.
Comment
A425727
Ceanothus
J. T. Howell
1935-5-5
12621
Unknown
6 miles from Santa Rosa on road to Sonoma
Comment
RSA21914
Ceanothus confusus
J. T. Howell
1935-5-5
12618
Sonoma
6 miles from Santa Rosa on road to Sonoma.
Comment
CAS-BOT-BC48708
Ceanothus cordulatus
John Thomas Howell
1945-9-30
21545
El Dorado
Near Echo Summit
Comment
CAS-BOT-BC49174
Ceanothus cuneatus
John Thomas Howell; Gordon H. True
1969-5-14
45724
Tulare
Sierra Nevada - Kern Plateau, Cherry Hill Road at start of Rincon Trail
1463
Comment
RSA99620
Ceanothus cuneatus
J. T. Howell
1954-3-18
29132
Monterey
Hastings Reservation, Santa Lucia Mts.
Comment
CAS-BOT-BC49786
Ceanothus divergens
John Thomas Howell
1941-4-5
16167
Napa
About 1 mi. sw. of Calistoga
Comment
CAS-BOT-BC49815
Ceanothus diversifolius
John Thomas Howell; Gordon H. True
1970-6-22
46597
Kern
1.5 milest west of summit on road from Kernville to Glennville
1584
Comment
CAS-BOT-BC50948
Ceanothus foliosus var. foliosus
John Thomas Howell
1930-12-28
5717
Marin
Slope of Mt. Tamalpais above Mill Valley
Comment
CAS-BOT-BC64328
Ceanothus gloriosus subsp. exaltatus
John Thomas Howell
1944-4-2
19361
Marin
Bolinas Ridge.
Comment
A349355
Ceanothus gloriosus var. exaltatus
J. T. Howell
1931-3-14
5781
Unknown
Vine Hill District, 10 miles west of Santa Rosa
Comment
RSA97029
Ceanothus gloriosus var. exaltatus
J. T. Howell
1954-4-24
29149
Mendocino
6 miles north of Willits
Comment
CAS-BOT-BC49987
Ceanothus gloriosus var. porrectus
John Thomas Howell
1944-6-4
19535
Marin
Inverness Ridge
Comment
A349677
Ceanothus jepsonii
J. T. Howell
1933-4-2
10959
Unknown
2 miles east of Occidental
Comment
CAS-BOT-BC50587
Ceanothus lemmonii
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-22
54071
Yuba
Sierra Nevada - 1/4 miles southwest of Bullards Bar Dam on road to Challenge
609
Comment
CAS-BOT-BC51147
Ceanothus lemmonii
John Thomas Howell
1975-6-15
51115
Butte
Paradise, Skyway near Billie Road
609
Comment
CAS-BOT-BC63519
Ceanothus oliganthus var. sorediatus
John Thomas Howell
1930-4-17
4716
Alameda
Strawberry Canyon, Berkeley Hills.
Comment
CAS-BOT-BC53225
Ceanothus parryi
John Thomas Howell
1931-4-2
6057
Napa
Wooden Valley Grade 4.5 miles east of Napa
Comment
CAS-BOT-BC126812
Ceanothus pauciflorus
John Thomas Howell; Gordon H. True
1967-7-5
43162
Tulare
4.5 miles north of South Fork Kern River bridge on road to Troy Meadow, Kern Plateau
2286
Comment
A425132
Ceanothus prostratus
J. T. Howell
1937-7-25
13494
Unknown
Stuarts Fork of Trinity River
1981
Comment
CAS-BOT-BC52198
Ceanothus purpureus
John Thomas Howell
1937-7-4
13062
Napa
Wooden Valley Grade
Comment
RSA19010
Ceanothus purpureus
J. T. Howell
1937-7-4
s.n.
Napa
Wooden Valley Grade
Comment
CAS-BOT-BC53036
Ceanothus sonomensis
John Thomas Howell
1935-5-5
12609
Sonoma
Slopes of Triniti Mt., 2 miles ne. of Glen Ellen
Comment
A425288
Ceanothus sorediatus
J. T. Howell
1928-3-2
3369
Unknown
Los Angeles, Canon bottom, Vermont Canon, Griffith Park
Comment
CAS-BOT-BC52406
Ceanothus velutinus var. velutinus
John Thomas Howell
1964-8-10
40939
Alpine
about 0.5 miles southwest of Monitor Pass
2514
Comment
CAS-BOT-BC52454
Ceanothus velutinus var. velutinus
John Thomas Howell
1969-9-14
46210
Mono
Leavitt Meadow
2194
Comment
CAS-BOT-BC281958
Centaurea benedicta
John Thomas Howell
1956-3-20
31120
San Bernardino
Mission Blvd at Grove St, Ontario
Comment
CAS-BOT-BC272147
Centaurea cineraria
John Thomas Howell
1943-5-23
18159
Alameda
Hills above Mills College
Comment
CAS-BOT-BC272084
Centaurea cyanus
John Thomas Howell
1959-9-24
34978
Plumas
Sierra Valley near Beckworth, Sierra Nevada
1493
Comment
JEPS33683
Centaurium muehlenbergii
John Thomas Howell
1926-6-13
2021
Stanislaus
Knight's Ferry
121
Comment
LA203698
Centromadia pungens
John Thomas Howell;
1930-10-5
5533
Solano
just N of Grizzly Island
Comment
CAS-BOT-BC279586
Centromadia pungens subsp. pungens
John Thomas Howell; Gordon H. True
1969-5-12
45597
Kern
Isabella
762
Comment
CAS-BOT-BC279321
Centromadia pungens subsp. pungens
John Thomas Howell
1956-9-19
31877
San Mateo
2.3 miles s. of Lake Merced on Skyline Blvd.
Comment
CAS-BOT-BC388194
Cerastium fontanum
John Thomas Howell
1959-9-22
34841
Plumas
Drakesbad
1737
Comment
CDA3348
Cerastium glomeratum
J. T. Howell
1964-6-3
40887
San Luis Obispo
Cambria.
0
Comment
RSA223599
Ceratophyllum demersum
J. T. Howell
1963-8-6
40025
Monterey
Abbott Lakes, Arroyo Seco Forest Service Campground.
Comment
CAS-BOT-BC135422
Cercocarpus betuloides var. betuloides
John Thomas Howell
1937-7-4
13074
Sonoma
Near Petrified Forest
Comment
CAS-BOT-BC136957
Cercocarpus ledifolius var. intricatus
John Thomas Howell
1928-6-14
3926
Inyo
S. side of Surprise [Canon] Canyon near Panamint City, Panamint Mts.
2438
Comment
CAS-BOT-BC279433
Chaenactis
John Thomas Howell; R. C. Barneby
1954-5-10
29382
Madera
Between North Fork and Bass Lake
914
Comment
CAS-BOT-BC279488
Chaenactis alpigena
John Thomas Howell
1938-8-9
14460
Madera
Devil's Postpile
Comment
CAS-BOT-BC279506
Chaenactis artemisiifolia
John Thomas Howell
1928-4-22
3752
Ventura
At. Pt. Mugu
Comment
CAS-BOT-BC276493
Chaenactis douglasii var. douglasii
John Thomas Howell
1943-8-8
19192
Unknown
Anthony Peak, Tehama - Mendocino Counties
Comment
CAS-BOT-BC277796
Chaenactis santolinoides
John Thomas Howell
1962-7-11
38559
Kern
Nevada slope of Black Mountain. Greenhorn Mountains
2133
Comment
CAS-BOT-BC284306
Chaenactis stevioides
John Thomas Howell
1958-5-25
33354
Inyo
Carroll Creek, Sierra Nevada
1676
Comment
CAS-BOT-BC279667
Chaenactis xantiana
John Thomas Howell
1950-7-26
27351
Tulare
Summit Meadow
Comment
CAS-BOT-BC140765
Chamaebatia foliolosa
John Thomas Howell
1977-8-1
52424
Calaveras
Dorrington
1463
Comment
A345151
Chamaebatiaria millefolium
J. T. Howell
1938-8-7
14338
Unknown
Crooked Creek
2057
Comment
UC473464
Chamaesyce serpillifolia subsp. hirtula
John Thomas Howell
1930-10-24
5651
Monterey
5.2 mi E of The Indians; Santa Lucia Mountains
Comment
CAS-BOT-BC68254
Cheilanthes gracillima
John Thomas Howell; Gordon H. True
1970-5-27
46564
El Dorado
Sierra Nevada - Rubicon River Canyon, near waterfall, N-NE of Leonardi Spring
1127
Comment
CAS-BOT-BC68129
Cheilanthes intertexta
John Thomas Howell; Gordon H. True
1967-7-5
43169
Tulare
Sierra Nevada, Kern Plateau - 2.8 miles north of South Fork Kern River bridge on road to Troy Meadow
2194
Comment
CAS-BOT-BC68135
Cheilanthes intertexta
John Thomas Howell
1953-5-24
29009
Tuolumne
between Pinecrest and Cow Creek
1737
Comment
RSA88305
Cheilanthes intertexta
J. T. Howell
1953-5-24
29009
Tuolumne
Around rocks between Pinecrest and Cow Creek
1738
Comment
RSA201508
Chenopodium atrovirens
J. T. Howell, Gordon True Jr.
1967-8-8
43504
Tulare
Lamont Meadow; Kern Plateau.
1677
Comment
CAS-BOT-BC460995
Chenopodium atrovirens
John Thomas Howell
1949-7-30
25939
Tulare
The Tunnel
2712
Comment
CAS-BOT-BC133240
Chlorogalum purpureum var. purpureum
John Thomas Howell
1957-6-2
32553
Monterey
Jolon
Comment
CAS-BOT-BC191831
Chorizanthe clevelandii
John Thomas Howell
1955-7-8
30650
Monterey
Hanging Valley, Santa Lucia Mountains
838
Comment
CAS-BOT-BC191860
Chorizanthe corrugata
John Thomas Howell
1928-3-24
3497
San Diego
near Palow Wash, W Colorado Desert
Comment
CAS-BOT-BC191559
Chorizanthe cuspidata var. cuspidata
John Thomas Howell
1933-7-9
11430
San Francisco
Lake Merced
Comment
CAS-BOT-BC191539
Chorizanthe cuspidata var. villosa
John Thomas Howell
1939-6-4
14716
Marin
Pt. Reyes Lighthouse
Comment
GH369847
Chorizanthe cuspidata var. villosa
J. T. Howell
1946-7-4
22176
Unknown
Dillons Beach
Comment
RSA127051
Chorizanthe cuspidata var. villosa
J. T. Howell
1946-6-9
s.n.
Marin
Abbott's Lagoon
Comment
CAS-BOT-BC256993
Chorizanthe membranacea
John Thomas Howell
1930-5-13
5035
Kern
Kern Canyon, 7 miles above Kernville
844
Comment
UC1176924
Chorizanthe polygonoides var. polygonoides
John Thomas Howell
1941-5-25
16229
Marin
between Potrero Meadow and Mount Theater (Mount Tamalpais); Mt. Tamalpais, btwn Potrero Meadow and Mt. Theater
Comment
CAS-BOT-BC32830
Chorizanthe staticoides var. staticoides
J. T. Howell
1928-6-10
3876
Los Angeles
San Gabriel Mts., Monrovia Canyon, near Deer Park
Comment
GH369966
Chorizanthe valida
J. T. Howell, C. Best, W. Follette & G. H. True
1980-6-19
53718
Unknown
near Abbotts Lagoon, Point Reyes Peninsula
Comment Read comments Jun 20 2017
CAS-BOT-BC247850
Chorizanthe ventricosa
John Thomas Howell
1963-6-21
39489
Monterey
Mustang Grade east of San Lorenzo Creek
Comment Read comments Jun 25 2019
CAS-BOT-BC248020
Chorizanthe watsonii
John Thomas Howell; Gordon H. True
1971-6-16
47919
Kern
6 miles east of Claraville on road to Kelso Valley
1676
Comment
UCD100054
Chorizanthe watsonii
John Thomas Howell
1962-5-22
37384
Tulare
1.5 mile east of Johnsondale.
1371
Comment
RSA65272
Chorizanthe wheeleri
J. T. Howell
1931-4-12
6300
Santa Barbara
Santa Cruz Island. Cochie Canyon.
Comment
CAS-BOT-BC255363
Chorizanthe xanti var. xanti
John Thomas Howell
1957-6-25
32765
Kern
Tehachapi Mts., 2.5 miles se. of Keene
914
Comment
RSA54048
Chrysanthemum leucanthemum
J. T. Howell
1949-7-4
25356
San Mateo
Skyline Blvd., north of Millbrae
Comment
CAS-BOT-BC36362
Chrysolepis sempervirens
John Thomas Howell
1958-8-13
34370
Madera
Near Isberg Lake
2987
Comment
RSA201258
Chrysothamnus parryi subsp. latior
J. T. Howell
1960-8-22
36414
Shasta
1/2 mile W of park line on road Viola.
Comment
CAS-BOT-BC100817
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell
1961-9-25
36959
Plumas
Portola
1478
Comment
JEPS75246
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell
1963-8-22
40286
Alpine
near Monitor Pass
2529
Comment
UCD130466
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell; Gordon H. True
1967-9-18
43743
Tulare
Kern Plateau, Chimney Meadow.
1889
Comment
POM248719
Cicuta bolanderi
J. T. Howell
1938-7-17
13975
Solano
Suisun Marshes at Benecia Junction
Comment
CAS-BOT-BC190006
Cinna latifolia
John Thomas Howell
1939-8-10
15252
Siskiyou
Marble Mountains. Sky High Valley.
1828
Comment
CAS-BOT-BC105806
Cirsium andrewsii
John Thomas Howell
1957-10-5
32985
San Francisco
Fort Point, Presidio, San Francisco
Comment
CAS-BOT-BC105830
Cirsium andrewsii
John Thomas Howell
1947-6-18
23275
Marin
Dillons Beach
Comment
CAS-BOT-BC105850
Cirsium andrewsii
John Thomas Howell
1958-6-3
33627
San Francisco
Fort Point, San Francisco
Comment
CAS-BOT-BC284386
Cirsium arvense
John Thomas Howell
1946-9-20
23022
Marin
Petaluma Road east of Tomales
Comment
CAS-BOT-BC279956
Cirsium douglasii var. breweri
John Thomas Howell
1960-7-24
35977
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC278096
Cirsium douglasii var. breweri
John Thomas Howell
1931-8-26
8018
Nevada
Floristan
Comment
UC1177292
Cirsium douglasii var. douglasii
J. Thomas Howell
1947-6-18
23286
Marin
n of Dillons Beach
Comment
CAS-BOT-BC100970
Cirsium hydrophilum var. vaseyi
John Thomas Howell
1936-6-7
12657
Marin
area near Bootjack, Mt. Tamalpais
Comment
CAS-BOT-BC280026
Cirsium mohavense
John Thomas Howell
1928-6-20
4043
Inyo
Jail Canyon near the Burro Mine, Panamint Mts.
1066
Comment
CAS-BOT-BC280101
Cirsium occidentale var. californicum
John Thomas Howell
1958-7-23
33807
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC285454
Cirsium occidentale var. californicum
John Thomas Howell
1948-6-15
24360
San Luis Obispo
Red Hills se. of Shandon
Comment
CAS-BOT-BC288005
Cirsium occidentale var. candidissimum
John Thomas Howell
1952-6-15
28362
Siskiyou
Knoll just east of Montague
Comment
CAS-BOT-BC286415
Cirsium occidentale var. venustum
John Thomas Howell
1930-5-13
5046
Kern
Kern Canyon, 7 miles above Kernville
844
Comment
UC1177305
Cirsium occidentale var. venustum
J. Thomas Howell
1946-5-14
21845
Marin
along road between Rock Spring and Summit Meadow; Mt. Tamalpais
Comment
CAS-BOT-BC288686
Cirsium quercetorum
John Thomas Howell
1939-6-4
14721
Marin
Point Reyes lighthouse
Comment
POM261377
Cirsium quercetorum
J. T. Howell
1939-6-18
14774
Marin
Near Mud Lake
Comment
CAS-BOT-BC288734
Cirsium remotifolium
John Thomas Howell
1941-6-8
16249
Marin
Hills NE of San Raphael
Comment
CAS-BOT-BC288754
Cirsium remotifolium
John Thomas Howell
1931-6-15
6702
Mendocino
At Carl Purdy's place, Mayacama Mts, near Ukiah
Comment
CAS-BOT-BC286451
Cirsium scariosum
John Thomas Howell
1960-7-24
35985
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC439069
Cistanthe monosperma
John Thomas Howell
1942-7-31
17441
Tulare
Mt. Kaweah
Comment
CAS-BOT-BC228942
Cistanthe umbellata
John Thomas Howell
1961-6-20
36551
Shasta
Lassen Volcanic National Park. Anklin Meadows
1874
Comment
CAS-BOT-BC229066
Cistanthe umbellata
John Thomas Howell; Gordon H. True
1969-10-1
46464
Tulare
Taylor Creek south of Church Dome, Kern Plateau
2194
Comment
CAS-BOT-BC223889
Cistus incanus
John Thomas Howell
1941-6-10
16287
Marin
At Black Point
Comment
CAS-BOT-BC162572
Clarkia affinis
John Thomas Howell
1937-5-20
12969
San Benito
6 miles east of Paicines
Comment
UC1422874
Clarkia gracilis
John Thomas Howell
1947-5-18
23173
Marin
Fairfax Hills
Comment
CAS-BOT-BC164607
Clarkia gracilis subsp. gracilis
John Thomas Howell
1943-5-22
18145
Marin
Fairfax hills
Comment
CAS-BOT-BC163151
Clarkia imbricata
John Thomas Howell
1937-7-4
13084
Sonoma
5 miles north of Sebastopol
Comment
CAS-BOT-BC172562
Clarkia purpurea subsp. purpurea
John Thomas Howell
1974-7-10
50550
Lassen
Elysian Valley, Sierra Nevada
1325
Comment
CAS-BOT-BC164915
Clarkia rhomboidea
John Thomas Howell; Gordon True; Walter Knight; Irja Knight
1967-7-10
2224
Plumas
Trestle Glen
Comment
RSA0059931
Clarkia rubicunda
J. T. Howell
1946-6-30
22131
Marin
Valley east of Rodeo Lagoon.
Comment
CAS-BOT-BC439158
Claytonia exigua subsp. exigua
John Thomas Howell
1925-3-22
848
Alameda
Arroyo Mocho at ne. base of Cedar Mt.
Comment
CAS-BOT-BC439225
Claytonia exigua subsp. exigua
John Thomas Howell
1946-3-24
21559
Marin
Fairfax Hills
Comment
CAS-BOT-BC451731
Claytonia lanceolata
John Thomas Howell
1940-5-31
15552
Mariposa
El Capitan Trail
Comment
CAS-BOT-BC451751
Claytonia lanceolata
John Thomas Howell
1961-6-20
36568
Shasta
Lassen Volcanic National Park. South slope of Diamond Peak
2255
Comment
CAS-BOT-BC233838
Claytonia parviflora subsp. parviflora
John Thomas Howell
1933-5-21
11307 A
Napa
Hills east of Napa
Comment
CAS-BOT-BC439501
Claytonia parviflora subsp. parviflora
John Thomas Howell
1931-4-4
6158
Lake
St. Helena Creek Canyon, 4 miles south of Middletown
Comment
CAS-BOT-BC439708
Claytonia parviflora subsp. viridis
John Thomas Howell
1963-5-5
39065
Monterey
Mustang Grade, west of Priest Valley
670
Comment
CAS-BOT-BC439724
Claytonia parviflora subsp. viridis
John Thomas Howell; Gordon H. True
1967-5-29
42386
Tulare
Slopes west of Lamont Meadow, Kern Plateau
1706
Comment
CAS-BOT-BC439889
Claytonia perfoliata
John Thomas Howell
1962-5-22
37376
Tulare
1.5 miles east of Johnsondale.
1371
Comment
CAS-BOT-BC439823
Claytonia perfoliata
John Thomas Howell
1969-4-22
45542
Amador
Fiddletown.
518
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-BC439951
Claytonia perfoliata subsp. mexicana
John Thomas Howell
1964-6-30
40877
San Luis Obispo
Cambria
Comment
CAS-BOT-BC440001
Claytonia perfoliata subsp. mexicana
John Thomas Howell
1931-4-13
6318
Santa Barbara
Santa Cruz Island near west end.
Comment
CAS-BOT-BC440070
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1933-5-28
11356
Alameda
Strawberry Canyon, Berkeley Hills
Comment
CAS-BOT-BC440081
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1958-7-24
33871
Fresno
Simpson Meadow, Middle Fork of the Kings River.
1828
Comment
CAS-BOT-BC443689
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1962-5-22
37281
Tulare
Kern River Canyon above Roads End
1097
Comment
CAS-BOT-BC92552
Clematis ligusticifolia
John Thomas Howell
1923-7-30
177
Mariposa
Stella Lake, Wawona.
1219
Comment
RSA40154
Conicosia pugioniformis
J. T. Howell
1943-10-30
19337
San Francisco
East of Lake Merced
15
Comment
RSA831
Conyza bonariensis
J. T. Howell
1927-9-24
755
Orange
Santa Ana Botany Garden
152
Comment
RSA835
Conyza canadensis
J. T. Howell
1927-9-24
743
Orange
Santa Ana Botany Garden
152
Comment
RSA220041
Conyza canadensis
J. T. Howell
1956-8-19
31777
San Francisco
Waterfront St. near Mission Rock Terminal, San Francisco.
Comment
CAS-BOT-BC288977
Conyza floribunda
J. T. Howell
1976-11-25
52312
San Francisco
Shotwell St between 25 and 26 Sts, San Francisco
Comment
NY68296
Cordylanthus nidularius
J. T. Howell
1942-7-19
17044
Contra Costa
Near of Deer Flat, Mt. Diablo.
Comment Read comments Jul 18 2011
RSA88133
Cordylanthus pilosus subsp. trifidus
J. T. Howell
1951-6-26
27515
Butte
Feather River Canyon.
213
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
UCR88755
Cordylanthus rigidus subsp. brevibracteatus
J. T. Howell
1962-9-22
38768
Kern
Greenhorn Mtns., 1.5 mi south of Summit
1951
Comment
RSA8476
Cordylanthus rigidus subsp. rigidus
J. T. Howell
1933-8-18
11573
Monterey
14 miles east of Jamesburg. Santa Lucia Mountains.
Comment
CAS-BOT-BC289004
Coreopsis bigelovii
John Thomas Howell
1960-6-6
35393
Fresno
Kings Canyon Rd 6.5 miles NE of Cherry Gap
1554
Comment
CAS-BOT-BC287936
Coreopsis calliopsidea
John Thomas Howell
1935-4-11
12598
Alameda
Near Tesla
Comment
CAS-BOT-BC287089
Coreopsis douglasii
John Thomas Howell
1930-5-12
4891
Los Angeles
2 miles N of Palmdale, Mojave Desert
Comment
CAS-BOT-BC101581
Corethrogyne filaginifolia
John Thomas Howell; Gordon H. True
1969-9-30
46346
Tulare
Cherry Hill Road 1 mile east of Kern Canyon highway, Brush Creek Canyon. Kern Plateau
1219
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
A385554
Cornus stolonifera
J. T. Howell
1943-8-11
19281
Unknown
Canyon of Snow Basin Creek
Comment
CAS-BOT-BC427810
Crassula connata
John Thomas Howell
1956-6-17
31583
San Francisco
Summit ridge of Bayview Hills, San Francisco
Comment
CAS-BOT-BC427686
Crassula connata
John Thomas Howell
1931-3-29
6005
San Benito
Near the Pinnacles
Comment
CAS-BOT-BC291565
Crepis intermedia
John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight
1969-6-24
2424
Plumas
Adjacent to the mouth of Butterfly Creek, Butterfly Botanical Area and vicinity
883
Comment
CAS-BOT-BC376536
Crepis monticola
John Thomas Howell
1943-8-4
19035
Glenn
Summit ridge n. of Black Butte
Comment
UC703116
Crepis nana
John Thomas Howell
1942-8-8
Tulare
Farewell Gap
Comment
CAS-BOT-BC290731
Crepis occidentalis subsp. conjuncta
John Thomas Howell
1943-7-18
18523
Nevada
Castle Peak
Comment
CAS-BOT-BC290924
Crepis vesicaria
John Thomas Howell
1956-5-1
31316
San Mateo
Just s. of Woodside on road to Searsville
Comment
POM225536
Cressa truxillensis
J. T. Howell
1932-9-2
10791
San Joaquin
Holt.
Comment
CAS-BOT-BC190121
Crypsis schoenoides
John Thomas Howell
1980-9-8
53895
Marin
Desiccated bottom of Alpine Lake near Bon Tempe Lake dam.
Comment
CAS-BOT-BC190143
Crypsis schoenoides
John Thomas Howell
1981-10-14
54629
Sutter
South side of Sutter Buttes. Oak Hill Ranch.
Comment
CAS-BOT-BC190132
Crypsis vaginiflora
John Thomas Howell
1980-9-8
53894
Marin
Alpine Lake near Bon Tempe Lake Dam.
Comment
CAS-BOT-BC190152
Crypsis vaginiflora
John Thomas Howell
1959-9-21
34814
Plumas
Sierra Nevada. Indian Creek. Just below Indian Falls.
914
Comment
CAS-BOT-BC177805
Cryptantha
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-16
53814
Tulare
Sherman Pass Road, 4.5 miles east of junction with Cherry Hill Road, Kern Plateau
2255
Comment
UCD119040
Cryptantha affinis
John Thomas Howell
1960-7-17
35487
Plumas
Lassen Volcanic National Park, Drakesbad.
1676
Comment
GH424680
Cryptantha circumscissa
J. T. Howell
1949-8-9
26200
Unknown
summit of Army Pass
3657
Comment
CAS-BOT-BC218892
Cryptantha circumscissa subsp. rosulata
John Thomas Howell
1949-7-27
25830
Tulare
Whitney Meadows
2956
Comment
CAS-BOT-BC189489
Cryptantha circumscissa var. circumscissa
John Thomas Howell
1949-7-17
25409
Inyo
Wonoga Peak
2895
Comment
CAS-BOT-BC218817
Cryptantha glomeriflora
John Thomas Howell; Gordon H. True
1967-5-29
42411
Tulare
Kern Plateau, near north end of Long Valley in metamorphic area
2103
Comment
CAS-BOT-BC218775
Cryptantha humilis
John Thomas Howell
1943-7-26
18845
Placer
Mt. Lincoln
Comment
RSA128035
Cryptantha rattanii
J. T. Howell
1955-5-21
s.n.
Monterey
Hastings Reservation, Santa Lucia Mountains
Comment
CAS-BOT-BC80698
Cupressus macnabiana
John Thomas Howell
1927-3-27
2294
Lake
west of Middletown
762
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
CAS-BOT-BC224508
Cuscuta californica
John Thomas Howell
1942-6-21
16986
Marin
Carson Ridge
Comment
CAS-BOT-BC224397
Cuscuta californica
John Thomas Howell
1925-5-9
1010
Merced
3 miles sw. of Merced
Comment
CAS-BOT-BC224542
Cuscuta californica
John Thomas Howell
1929-10-4
4434
Placer
Four miles below Colfax on road to Auburn
Comment
SBBG41367
Cuscuta californica
J. T. Howell
1944-9-3
Marin
head of Cascade Cyn, Mt Tamalpais
Comment
UCD127344
Cyclospermum leptophyllum
John Thomas Howell
1967-5-31
42546
Fresno
Belmont and Parkway, Fresno.
Comment
CAS-BOT-BC190280
Cynodon dactylon
John Thomas Howell
1956-11-4
s.n.
San Francisco
San Francisco. Waterfront.
Comment
CAS-BOT-BC114671
Cyperus eragrostis
John Thomas Howell
1963-5-18
39266
Monterey
Open hills, 2.5 mi S of Aromas.
60
Comment
CAS-BOT-BC114532
Cyperus eragrostis
John Thomas Howell
1954-6-21
30004
San Francisco
in garden of Dr. E P Meinecke, 3157 Jackson st.
Comment
CAS-BOT-BC113876
Cyperus niger var. capitatus
John Thomas Howell
1960-8-20
36275
Plumas
Wet meadow, Drakesbad
1828
Comment
UCD141103
Cyperus squarrosus
John Thomas Howell
1962-7-7
38153
Kern
Kern River Canyon.
304
Comment
CAS-BOT-BC133742
Cypripedium californicum
John Thomas Howell
1937-7-28
13610
Trinity
Field redacted by CAS, contact the data manager for more information
Comment
UC750512
Cystopteris fragilis
John Thomas Howell
1946-7-14
22301
Inyo
Mosquito Flat; Rock Creek Lake Basin
3139
Comment
UC421594
Damasonium californicum
John Thomas Howell
1929-4-20
4172
Merced
2 mi. n.w. Merced (on Oakdale Rd.)
Comment
CAS-BOT-BC186633
Danthonia californica
John Thomas Howell
1957-5-17
s.n.
San Francisco
Bayview Hills
Comment
CAS-BOT-BC189670
Danthonia californica
John Thomas Howell
1973-7-10
49753
Plumas
Sierra Nevada. Near Greenville.
1097
Comment
CAS-BOT-BC194372
Danthonia unispicata
John Thomas Howell
1946-7-28
22820
Inyo
Gem Lake, Rock Creek Lake Basin
3352
Comment
GH404748
Danthonia unispicata
J. T. Howell
1944-7-14
19781
Unknown
Plaskett
Comment
CAS-BOT-BC141804
Dasiphora fruticosa
John Thomas Howell
1946-7-14
22273
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC141828
Dasiphora fruticosa
John Thomas Howell
1944-8-16
20671
Mono
Mono Pass
Comment
CAS-BOT-BC287377
Deinandra corymbosa
John Thomas Howell
1943-5-23
18171
Alameda
Hills above Mills College
Comment
CAS-BOT-BC293822
Deinandra fasciculata
John Thomas Howell
1930-5-10
4789
Riverside
2 miles south of Perris
Comment
CAS-BOT-BC299986
Deinandra kelloggii
John Thomas Howell; R. C. Barneby
1954-5-8
29212
Tulare
Tule River Canyon, 5 miles above Springville, Sierra Nevada
548
Comment
CAS-BOT-BC291793
Deinandra lobbii
John Thomas Howell
1930-10-11
5542
Alameda
Livermore Valley 4 miles West of Livermore
Comment
CAS-BOT-BC291781
Deinandra lobbii
John Thomas Howell
1934-7-5
12426
Shasta
4 miles nw. of Fall River Mills
Comment
CAS-BOT-BC179651
Delphinium
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54261
Plumas
About 2.5 miles southeast of Mt. Hough on the road to Quincy
1798
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-BC8604
Delphinium hansenii
John Thomas Howell; Barbara Menzies; Roberta Shockey
1978-5-17
52929
Calaveras
Camanche Parkway South between Burson Road and Camanche Reservoir
152
Comment
CAS-BOT-BC10109
Delphinium hesperium subsp. pallescens
John Thomas Howell
1939-4-30
14622
Napa
Near Walter Springs
Comment
CAS-BOT-BC9927
Delphinium nudicaule
John Thomas Howell
1945-6-19
21042
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC121490
Delphinium parryi subsp. parryi
John Thomas Howell
1931-4-11
6246
Santa Barbara
Valle del Medio, Santa Cruz Island
Comment
CAS-BOT-BC121357
Delphinium parryi subsp. purpureum
J. T. Howell
1927-7-10
2748
San Bernardino
North side of Big Bear Lake, San Bernardino Mountains.
2042
Comment
CAS-BOT-BC121566
Delphinium patens subsp. montanum
John Thomas Howell
1962-7-10
38487
Kern
Shirley Meadows, Greenhorn Mtns
2011
Comment
CAS-BOT-BC121742
Delphinium patens subsp. patens
John Thomas Howell
1951-6-27
27579
Plumas
McRae Meadow
1981
Comment
CAS-BOT-BC16793
Delphinium polycladon
John Thomas Howell
1944-8-16
20580
Tuolumne
Mono Pass Trail
Comment
CAS-BOT-BC192370
Deschampsia cespitosa subsp. cespitosa
John Thomas Howell
1941-8-1
16657
Madera
Near Garnet Lake
2956
Comment
POM203128
Deschampsia cespitosa subsp. cespitosa
J. T. Howell
1934-7-9
12517
Lassen
Bridges Creek Spring.
Comment
CAS-BOT-BC209126
Deschampsia danthonioides
John Thomas Howell
1956-6-10
31505
San Francisco
North slope of Bay View Hills, San Francisco
Comment
RSA299161
Deschampsia danthonioides
J. T. Howell, Gordon H. True
1970-6-26
46864
Tulare
True Meadow; Kern Plateau
2226
Comment
CAS-BOT-BC201759
Deschampsia elongata
John Thomas Howell
1958-7-22
33773
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC42956
Descurainia incana
John Thomas Howell; Gordon H. True
1970-7-28
47017
Tulare
Sierra Nevada. Kern Plateau. West side of Big Meadow just south of Pipe Spring.
2377
Comment
CAS-BOT-BC43112
Descurainia pinnata subsp. brachycarpa
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-27
53121
Alpine
Sierra Nevada. Canyon of East Fork of Carson River on road to Wolf Creek Meadows.
1767
Comment
CAS-BOT-BC43532
Descurainia sophia
John Thomas Howell
1962-5-22
34351
Tulare
Sierra Nevada. Johsondale.
1423
Comment
CAS-BOT-BC254477
Dichanthelium acuminatum subsp. acuminatum
John Thomas Howell
1937-6-6
13032
Sonoma
Pitkin Marsh
Comment
RSA127246
Dichanthelium acuminatum var. fasciculatum
J. T. Howell
1941-5-25
16225
Marin
Potrero Meadow, Mt. Tamalpais
Comment
CAS-BOT-BC500091
Dichelostemma capitatum
John Thomas Howell
1944-7-17
19831
Contra Costa
Canyon of Snow Basin Creek
Comment
CAS-BOT-BC292196
Dicoria canescens
John Thomas Howell
1928-11-4
4087
Riverside
Below Palm Canon [Canyon] on road from Indio to Palm Springs
Comment
CAS-BOT-BC292259
Dieteria canescens
John Thomas Howell
1974-7-8
50470
Lassen
Susanville
1295
Comment
CAS-BOT-BC299825
Dieteria canescens var. canescens
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-11
54482
Mono
4 miles northeast of Highway 395 on Benton Crossing Road, Long Valley, Sierra Nevada
2148
Comment
CAS-BOT-BC209070
Digitaria sanguinalis
John Thomas Howell
1963-8-5
39971
Monterey
Along railroad tracks, King City.
Comment
CAS-BOT-BC150203
Diplacus
John Thomas Howell
1967-6-22
42608
Butte
Magalia
701
Comment
CAS-BOT-BC150409
Diplacus aurantiacus
John Thomas Howell
1956-6-10
31519
San Francisco
North slope of Bay View Hills, San Francisco
Comment
CAS-BOT-BC152056
Diplacus calycinus
John Thomas Howell
1960-6-6
35388
Fresno
Kings Canyon Road, 4 miles west of Horseshoe Bend - Sierra Nevada
1036
Comment
CAS-BOT-BC151878
Diplacus congdonii
John Thomas Howell
1931-4-2
6071
Napa
Wooden Valley Grade 5 miles east of Napa
Comment
CAS-BOT-BC151914
Diplacus douglasii
John Thomas Howell
1925-3-23
868
Alameda
Arroyo Mocho at ne base of Cedar Mt.
Comment
CAS-BOT-BC153410
Diplacus layneae
John Thomas Howell
1940-5-19
15461
Napa
Upper St. Helena Creek
Comment
CAS-BOT-BC153377
Diplacus layneae
John Thomas Howell
1945-6-21
21196
Lake
Bartlett Flat
Comment
CAS-BOT-BC151417
Diplacus mephiticus
John Thomas Howell
1950-7-18
27067
Tulare
North end of Monache Meadows - Sierra Nevada
2438
Comment
CAS-BOT-BC151779
Diplacus mephiticus
John Thomas Howell
1949-8-13
26266
Inyo
Little Cottonwood Creek
2987
Comment
CAS-BOT-BC151631
Diplacus torreyi
John Thomas Howell
1943-7-28
18902
El Dorado
2 miles west of Pacific House
Comment
RSA126206
Dirca occidentalis
J. T. Howell
1948-5-31
s.n.
Marin
Devil's Gulch, near Camp Taylor
Comment
CAS-BOT-BC195632
Distichlis spicata
John Thomas Howell
1945-8-5
s.n.
Marin
Stinson Beach
Comment
CAS-BOT-BC208679
Distichlis spicata
John Thomas Howell
1958-5-29
33617
Inyo
Bishop
1264
Comment
CAS-BOT-BC126906
Dodecatheon alpinum
John Thomas Howell; Gordon H. True
1970-6-25
46807
Tulare
Sirretta Meadows, Kern Plateau
2743
Comment
CAS-BOT-BC136229
Dodecatheon alpinum
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-28
53165
Alpine
Rocky subalpine meadowy flat, west base of Ebbetts Peak - Sierra Nevada
2743
Comment
RSA69026
Dodecatheon clevelandii subsp. patulum
J. T. Howell
1933-3-31
10917
San Francisco
Bernal Heights.
Comment
CAS-BOT-BC41964
Draba albertina
John Thomas Howell
1969-8-5
45877
Shasta
Lassen Volcanic National Park. Dersch Meadows.
Comment
CAS-BOT-BC41991
Draba albertina
John Thomas Howell
1946-7-14
22300
Inyo
Rock Creek Lake Basin. Mosquito Flat.
3139
Comment
GH379178
Draba albertina
J. T. Howell & G. H. True
1970-6-23
46645
Unknown
NE end of Big Meadow
2377
Comment
CAS-BOT-BC41826
Draba breweri
John Thomas Howell
1946-7-18
s.n.
Fresno
Mount Starr.
Comment
CAS-BOT-BC41716
Draba densifolia
John Thomas Howell
1946-7-24
22696 a
Inyo
Mono Mesa.
3657
Comment
CAS-BOT-BC41190
Draba lemmonii
John Thomas Howell
1949-8-5
26076
Inyo
Army Pass.
3657
Comment
RSA0020557
Draba lemmonii var. lemmonii
J. T. Howell
1940-8-2
15914
Tulare
West of Reflection Lake.
3354
Comment
CAS-BOT-BC41243
Draba oligosperma
John Thomas Howell
1946-7-27
22797 a
Fresno
Northwest of Mono Pass.
3657
Comment
CAS-BOT-BC41251
Draba oligosperma
John Thomas Howell
1947-8-11
24012
Inyo
South end of Coyote Ridge.
3657
Comment
CAS-BOT-BC159690
Drymocallis glandulosa
John Thomas Howell; Gordon H. True
1970-7-30
47152
Tulare
Southwest end of Big Meadow just east of Cherry Hill Road, Kern Plateau - Sierra Nevada
2377
Comment
CAS-BOT-BC159407
Drymocallis glandulosa var. glandulosa
John Thomas Howell; Gordon H. True
1970-7-27
46915
Tulare
Forest border of Big Meadow on the e. side at Joughin Camp - Kern Plateau, Sierra Nevada
2377
Comment
RSA563353
Drymocallis glandulosa var. reflexa
J. T. Howell
1970-6-24
46708
Tulare
Kern Plateau, N Manter Creek, Big Meadow to Manter Meadow
2348
Comment
CAS-BOT-BC536645
Drymocallis pseudorupestris
John Thomas Howell
1944-7-16
19817
Glenn
Black Butte
Comment
CAS-BOT-BC158422
Drymocallis rhomboidea
John Thomas Howell
1937-7-21
13162
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC70807
Dryopteris
John Thomas Howell
1965-4-26
41173
Monterey
3 miles south of Oakhurst
914
Comment
CAS-BOT-BC427999
Dudleya caespitosa
John Thomas Howell
1933-7-23
11460
Marin
Sausalito Hills
Comment
CAS-BOT-BC428321
Dudleya farinosa
John Thomas Howell
1953-7-16
29114 A
Mendocino
1 mile north of Elk
Comment
CAS-BOT-BC197016
Echinochloa colona
John Thomas Howell
1967-11-3
44050
Tulare
About 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC197146
Echinochloa crus-galli
John Thomas Howell
1939-9-3
15343
Marin
Near Novato
Comment
CAS-BOT-BC291131
Eclipta prostrata
John Thomas Howell
1965-10-21
41420
Sacramento
Levee of the Sacramento River at Miller Park, Sacramento
Comment
UCD61181
Ehrharta calycina
John Thomas Howell
1968-4-24
44192
San Luis Obispo
San Luis Obispo Co.: Just south of Nacimiento Dam on road to Paso Robles, Santa Lucia Mts.
Comment
CAS-BOT-BC113752
Eleocharis acicularis
John Thomas Howell
1950-7-20
27121
Tulare
Bakeoven Meadows, South Fork of Kern River.
2468
Comment
CAS-BOT-BC112785
Eleocharis macrostachya
John Thomas Howell
1959-9-20
34660
Butte
Lower foothills, eastern outskirts of Oroville.
60
Comment
CAS-BOT-BC112768
Eleocharis macrostachya
John Thomas Howell
1960-8-23
36427
Shasta
Reflection Lake
Comment
CAS-BOT-BC112846
Eleocharis macrostachya
John Thomas Howell
1973-7-10
49805
Lassen
Near Susanville on road to Janesville.
1295
Comment
CAS-BOT-BC112936
Eleocharis macrostachya
John Thomas Howell
1957-8-6
32876
San Francisco
Pond in Strybing Aboretum, Golden Gate Park
Comment
SEINET10466724
Eleocharis macrostachya
John Thomas Howell
1955-7-20
Howell 30886
Sierra
Near Colpine, 4950 feet.
1510
Comment
RSA26612
Eleocharis obtusa var. engelmannii
J. T. Howell
1951-8-20
28212
Plumas
Genesee
1128
Comment
CAS-BOT-BC113182
Eleocharis palustris
John Thomas Howell
1942-8-6
17761
Tulare
Little Five Lakes Basin
Comment
CAS-BOT-BC112705
Eleocharis parishii
John Thomas Howell
1970-9-22
47310
Tulare
Fairview.
1066
Comment
CAS-BOT-BC112054
Eleocharis quinqueflora
John Thomas Howell
1943-7-19
18575
Placer
Summit Valley.
Comment
RSA85
Eleocharis rostellata
J. T. Howell
1927-7-21
449
Orange
Santa Ana River, Rancho Santa Ana.
152
Comment
CAS-BOT-BC112239
Eleocharis rostellata
John Thomas Howell
1928-6-30
4053
Inyo
Wet soil, Jail Canyon near the Burro Mine, Panamint Mts.
1066
Comment
CAS-BOT-BC112023
Eleocharis suksdorfiana
John Thomas Howell
1949-8-7
26097
Tulare
Rock Creek
3169
Comment
CAS-BOT-BC112034
Eleocharis suksdorfiana
John Thomas Howell
1943-7-24
18750
Nevada
Horse Range Valley
Comment
CAS-BOT-BC203823
Elymus X hansenii
John Thomas Howell
1963-7-10
39714
Alpine
Grover Hot Springs
1798
Comment
CAS-BOT-BC203841
Elymus X hansenii
John Thomas Howell
1955-6-13
30350
Trinity
Hayfork Mt. summit on road from Douglas City to Hayfork
1097
Comment
CAS-BOT-BC203854
Elymus X hansenii
John Thomas Howell
1943-5-15
18090
Marin
Tiburon Peninsula
Comment
CAS-BOT-BC213793
Elymus X hansenii
John Thomas Howell
1969-8-28
46039
Tulare
Near the pack station, Mineral King - Sierra Nevada
2377
Comment
UCD62750
Elymus X hansenii
John Thomas Howell
20-23 Jun 1977
52415
Plumas
On the peninsula of Lake Almanor.
1371
Comment
CAS-BOT-BC225718
Elymus elymoides
John Thomas Howell; Gordon H. True
1970-6-26
46839
Tulare
Mixed conifer forest at True Meadow, Kern Plateau, Sierra Nevada
2225
Comment
CAS-BOT-BC227145
Elymus elymoides
John Thomas Howell
1955-7-7
30539
Monterey
North slope of summit of Junipero Serra Peak, Santa Lucia Mts.
1767
Comment
CAS-BOT-BC227310
Elymus elymoides
John Thomas Howell
1948-7-22
24879
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC227512
Elymus elymoides
John Thomas Howell
1941-8-2
16679
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC227603
Elymus elymoides
John Thomas Howell
1951-6-27
27564
Plumas
Johnsville
1584
Comment
CAS-BOT-BC228516
Elymus elymoides
John Thomas Howell
1944-8-9
20177
Tuolumne
Near Parsons Lodge, Tuolumne Meadows
Comment
CAS-BOT-BC227895
Elymus elymoides
John Thomas Howell
1960-8-22
36364
Shasta
Lassen Volcanic National Park. Manzanita Lake
1783
Comment
UCD61648
Elymus elymoides subsp. brevifolius
John Thomas Howell
1955-7-19
30780 -A
Plumas
Beckwourth.
1493
Comment
GH365025
Elymus glaucus
J. T. Howell
1943-7-4
18249
Unknown
Ledum Swamp on road to Pt. Reyes
Comment
SEINET10864628
Elymus glaucus
John Thomas Howell
1941-5-25
Howell 16215
Marin
Rifle Camp, Mount Tamalpais.
Comment
CAS-BOT-BC203490
Elymus glaucus subsp. glaucus
John Thomas Howell
1941-5-25
16215
Marin
Rifle Camp, Mt. Tamalpais
Comment
CAS-BOT-BC203733
Elymus glaucus subsp. glaucus
John Thomas Howell
1960-8-18
36083
Tehama
Lassen Volcanic National Park. Sulphur Works Checking Station
2011
Comment
CAS-BOT-BC203753
Elymus glaucus subsp. glaucus
John Thomas Howell
1958-5-22
33120
Tulare
Kern River Canyon 6 miles south of Roads End P.O.
944
Comment
CAS-BOT-BC206514
Elymus glaucus subsp. glaucus
John Thomas Howell; Walter Knight; Irja Knight
1966-7-28
1652
Plumas
In area near Sweetwater Meadow - Butterfly Botanical Area and Vicinity
1127
Comment
CAS-BOT-BC228679
Elymus multisetus
John Thomas Howell
1956-6-5
31488
San Francisco
North slope of Bayview Hills, San Francisco
Comment
RSA65
Elymus multisetus
J. T. Howell
1927-6-8
53
Orange
Botany Garden, Rancho Santa Ana.
152
Comment
UCD62557
Elymus repens
John Thomas Howell
1967-6-22
42663
Plumas
Court house square, Quincy.
1036
Comment
CAS-BOT-BC213848
Elymus sierrae
John Thomas Howell
1951-7-21
28062
Tulare
Marble, White Chief region, Mineral King and vicinity
2895
Comment
CAS-BOT-BC213510
Elymus trachycaulus subsp. trachycaulus
John Thomas Howell
1940-7-30
15711
Tulare
East Lake
Comment
SEINET7292780
Elysitanion hansenii
John Thomas Howell
1977-1
52415
Plumas
Sierra Nevada; Peninsula of Lake Almanor
1372
Comment
CDA2053
Elytrigia repens
J. T. Howell
1961-9-23
36826
Plumas
Indian Valley.
Comment
CAS-BOT-BC81610
Ephedra californica
John Thomas Howell
1977-3-11
52330
San Diego
bank bordering San Felipe Wash sw. of Yaqui Pass
Comment
CAS-BOT-BC81673
Ephedra californica
John Thomas Howell
1971-4-2
47595
Santa Barbara
flats of Cuyama Valley in ne. corner of Santa Barbara Co.
Comment
CAS-BOT-BC81795
Ephedra nevadensis
John Thomas Howell
1948-4-26
24254
Kern
2 miles north of Mojave
Comment
UC1042581
Ephedra viridis
John Thomas Howell
1950-7-28
27421
Mono
Leevining Canyon Sierra Nevada, Leevining Canyon
2255
Comment
CAS-BOT-BC165930
Epilobium
John Thomas Howell
1959-9-26
35076
Plumas
3.2 mi. w. of Belden
Comment
CAS-BOT-BC166329
Epilobium canum subsp. canum
John Thomas Howell
1930-10-24
5636
Monterey
17.2 miles east of The Indians, Santa Lucia Mts.
Comment
CAS-BOT-BC166546
Epilobium canum subsp. latifolium
John Thomas Howell; Gordon H. True
1969-9-30
46345
Tulare
Cherry Hill Road 1 mile east of Kern Canyon Highway, Brish Creek Canyon. Kern Plateau
1219
Comment
RSA88520
Epilobium canum subsp. latifolium
J. T. Howell
1951-7-17
27833
Tulare
White Chief Trail. Mineral King and vicinity.
2591
Comment
JEPS33709
Epilobium ciliatum subsp. ciliatum
John Thomas Howell
1926-6-13
2020
Stanislaus
Knight's Ferry
121
Comment
CAS-BOT-BC57890
Equisetum X ferrissii
John Thomas Howell
1963-5-18
39355
Monterey
Aromas.
30
Comment
CAS-BOT-BC57080
Equisetum arvense
John Thomas Howell; Gordon H. True
1967-7-3
42856
Tulare
Rockhouse Meadow, Kern Plateau
1706
Comment
CAS-BOT-BC57935
Equisetum arvense
John Thomas Howell
1962-9-22
38759
Kern
Kern Co. Park, Greenhorn Mountains.
1828
Comment
RSA88306
Equisetum arvense
J. T. Howell
1953-5-22
28984
Tuolumne
Cedar Ridge Road near Twain Harte.
915
Comment
CAS-BOT-BC57265
Equisetum laevigatum
John Thomas Howell
1958-7-22
33732
Fresno
Simpson Meadow
1828
Comment
CAS-BOT-BC57238
Equisetum laevigatum
John Thomas Howell
1930-4-13
4691
Calaveras
North Fork of Calaveras River 2 miles west of San Andreas
Comment
CAS-BOT-BC57399
Equisetum laevigatum
John Thomas Howell
1960-7-24
35994
Plumas
Chester
1371
Comment
CAS-BOT-BC204588
Eragrostis mexicana subsp. virescens
John Thomas Howell
1948-8-1
25271
Mono
Just north of summit of Sherwin Grade
Comment
CAS-BOT-BC204646
Eragrostis mexicana subsp. virescens
John Thomas Howell
1954-9-6
30095
Tuolumne
Between Tuttletown and Rawhide
Comment
SBBG115765
Eragrostis pectinacea
J. T. Howell
1954-9-6
30072
Calaveras
Altaville
Comment
CAS-BOT-BC284141
Eragrostis pectinacea var. pectinacea
John Thomas Howell
1963-6-21
39451
Monterey
King City
100
Comment
POM303727
Erechtites minimus
J. T. Howell
1944-7-30
19857
Marin
Almonte.
Comment
CAS-BOT-BC174124
Eremogone aculeata
John Thomas Howell
1941-8-5
16762
Madera
Near Garnet Lake
2956
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
CAS-BOT-BC512630
Eriastrum abramsii
John Thomas Howell
1960-4-23
35215
Santa Clara
San Antonio Valley
Comment
JEPS69021
Eriastrum densifolium subsp. austromontanum
John Thomas Howell
1927-8-2
2908
Riverside
between Banning and Strawberry Valley; Mt. St. Jacinto
Comment
UC518007
Eriastrum densifolium subsp. elongatum
John Thomas Howell
1933-8-16
11524
San Benito
6 miles N of the Pinnacles.
Comment
CAS-BOT-BC514500
Eriastrum eremicum subsp. eremicum
John Thomas Howell
1927-8-1
2890
San Bernardino
Along the road in the upper part of Morongo Valley, east end, Mojave Desert
Comment
JEPS33703
Eriastrum sapphirinum
John Thomas Howell
1927-6-12
2511
San Bernardino
Deadman's Point Mojave Desert
914
Comment
RSA0124859
Eriastrum wilcoxii
J. T. Howell
1928-6-14
3897
Inyo
Surprise Canyon, near Panamint City, Panamint Mountains.
Comment
CAS-BOT-BC131552
Ericameria arborescens
John Thomas Howell
1956-12-4
31976
Mariposa
1 mile from Mariposa on road to Briceburg
Comment
CAS-BOT-BC286684
Ericameria bloomeri
John Thomas Howell
1951-8-21
28260
Sierra
East side of Yuba Pass
1828
Comment
CAS-BOT-BC286718
Ericameria bloomeri
John Thomas Howell; Gordon H. True
1969-9-29
46276
Tulare
Upper Dry Lake, east of north end of Long Meadow, Kern Plateau
2392
Comment
CAS-BOT-BC291272
Ericameria bloomeri
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-10
54431
Amador
On Carson Pass road just west of Carson Spur near Kirkwood
2407
Comment
POM183302
Ericameria cuneata var. cuneata
J. T. Howell
1931-10-11
8144
Mariposa
Wawona Point
Comment
CAS-BOT-BC286857
Ericameria discoidea
John Thomas Howell
1940-8-1
15799
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC298932
Ericameria nauseosa var. ceruminosa
John Thomas Howell; Gordon H. True
1967-9-18
43759
Tulare
Recreation area, N end of Lamont Meadow, Kern Plateau
1706
Comment
CAS-BOT-BC298943
Ericameria nauseosa var. ceruminosa
John Thomas Howell
1967-11-6
44179
Kern
About 4.5 miles W of Wofford Heights, Greenhorn Mts
1219
Comment
CAS-BOT-BC298073
Ericameria nauseosa var. mohavensis
John Thomas Howell
1931-9-7
8085
San Benito
San Benito River 2 miles SE of Hernandez
Comment
CAS-BOT-BC298104
Ericameria nauseosa var. mohavensis
John Thomas Howell
1970-9-22
s.n.
Tulare
Kern Canyon 1.5 miles N of River Kern
853
Comment
CAS-BOT-BC294154
Ericameria nauseosa var. speciosa
John Thomas Howell
1947-8-13
24042
Inyo
Black Lake Trail, Big Pine Lakes
3200
Comment
CAS-BOT-BC294290
Ericameria nauseosa var. speciosa
John Thomas Howell
1974-9-20
50902
Plumas
About 2 miles from Spring Garden on road to Quincy
1158
Comment
JEPS29498
Ericameria nauseosa var. speciosa
John Thomas Howell
1960-8-20
36283
Plumas
near Drakesbad (Kelly Camp, near Lassen Volcanic National Park); Lassen Volcanic National Park
1615
Comment
CAS-BOT-BC294313
Ericameria nauseosa var. speciosa
John Thomas Howell
1960-7-24
35991
Plumas
Kelly Camp, just south of Lassen Park
1615
Comment
CAS-BOT-BC298300
Ericameria nauseosa var. speciosa
John Thomas Howell
1946-9-8
22994
Marin
Along Redwood Highway at St Vincent's
Comment
CAS-BOT-BC293027
Ericameria parryi var. nevadensis
John Thomas Howell
1959-9-24
34960
Plumas
Near Blairsden
1341
Comment
JEPS19153
Ericameria pinifolia
John Thomas Howell
1927-11-13
3204
Los Angeles
near Elizabeth Lake; Liebre Mts.
Comment
CAS-BOT-BC293206
Ericameria suffruticosa
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50665
Lassen
Summit ridge of Diamond Mt.
2346
Comment
GH417498
Ericameria suffruticosa
J. T. Howell
1941-8-10
16901
Unknown
Summit of trail between Garnet and Shadow lakes
Comment
CAS-BOT-BC293426
Erigeron algidus
John Thomas Howell
1946-7-15
22380
Inyo
Between Mosquito Flat and Ruby Lake, Rock Creek Lake Basin
Comment
CAS-BOT-BC293592
Erigeron barbellulatus
John Thomas Howell
1943-7-21
18666
Placer
Mt. Lincoln
Comment
CAS-BOT-BC294680
Erigeron breweri var. breweri
John Thomas Howell; Gordon H. True
1966-7-12
41838
Kern
Rim of plateau just east of Fay Creek canyon, Kern Plateau
2194
Comment
CAS-BOT-BC294792
Erigeron breweri var. breweri
John Thomas Howell
1950-7-16
26961
Tulare
Gorge north of Bakeoven Meadows, South Fork of Kern River
2499
Comment
CAS-BOT-BC297054
Erigeron breweri var. breweri
John Thomas Howell
1962-7-10
38516
Kern
Summit of Cooks Peak, Greenhorn Mountains, Sierra Nevada
2103
Comment
SD149187
Erigeron breweri var. breweri
John Thomas Howell
1962-9-24
38863
Kern
Summit of Cook's Peak; Greenhorn Mountains.
2100
Comment
CAS-BOT-BC295008
Erigeron compositus
John Thomas Howell
1949-8-5
26072
Inyo
Army Pass
3657
Comment
CAS-BOT-BC296727
Erigeron coulteri
John Thomas Howell
1946-7-15
22387
Inyo
Between Mosquito Flat and Ruby Lake, Rock Creek Lake Basin
Comment
CAS-BOT-BC296771
Erigeron coulteri
John Thomas Howell
1950-7-24
27256
Tulare
Monache Creek, Sierra Nevada
2560
Comment
CAS-BOT-BC42762
Erigeron eatonii var. plantagineus
John Thomas Howell
1934-7-3
12379
Modoc
5 mi S of Hackamore.
Comment
CAS-BOT-BC300419
Erigeron eatonii var. sonnei
John Thomas Howell
1977-6-21
52393
Plumas
Near Almanor P. O., Lake Almanor
1371
Comment
CAS-BOT-BC42771
Erigeron filifolius
John Thomas Howell
1934-6-12
12014
Modoc
Between Davis Creek and Plum Valley.
Comment
CAS-BOT-BC49630
Erigeron filifolius
John Thomas Howell
1934-6-12
12014
Modoc
Between Davis Creek and Plum Valley.
Comment
UCD131895
Erigeron floribundus
John Thomas Howell
1975-9-10
51506
San Francisco
Main St, between Market and Mission streets.
Comment
CAS-BOT-BC295229
Erigeron inornatus
John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight
1967-7-10
2160
Plumas
Butterfly Botanical Area and vicinity. Confluence of Butterfly Creek
883
Comment
CAS-BOT-BC295331
Erigeron lonchophyllus
John Thomas Howell; Gordon H. True
1970-6-26
46878
Tulare
Taylor Meadow, Kern Plateau
2194
Comment
POM303659
Erigeron miser
J. T. Howell
1943-7-17
s.n.
Nevada
West side of Donner Pass near Norden.
2134
Comment
CAS-BOT-BC295769
Erigeron petrophilus var. petrophilus
John Thomas Howell
1933-8-13
11503
Santa Clara
Summit of Mt. Hamilton
Comment
UC1177261
Erigeron petrophilus var. petrophilus
John Thomas Howell
1943-5-30
Marin
Northside Trail Mt. Tamalpais, Northside Trail
Comment
CAS-BOT-BC300167
Erigeron pygmaeus
John Thomas Howell
1947-8-11
23986
Inyo
Inconsolable Range
3810
Comment
A402877
Eriodictyon tomentosum
J. T. Howell
1933-8-18
11565
Unknown
17 miles east of Jamesburg, Santa Lucia Mts.
Comment
CAS-BOT-BC248486
Eriogonum angulosum
John Thomas Howell
1930-5-8
4759
Monterey
7 miles north of San Bernardo
Comment
CAS-BOT-BC248749
Eriogonum argillosum
John Thomas Howell
1938-5-28
13828
Merced
Los Banos Hills
Comment
RSA206
Eriogonum baileyi var. baileyi
J. T. Howell
1927-6-12
107
San Bernardino
12 miles SE of Victorville.
915
Comment
CAS-BOT-BC241567
Eriogonum baileyi var. baileyi
John Thomas Howell; G. H. True
1973-7-31
50144
Lassen
Janesville
1295
Comment
RSA22441
Eriogonum baileyi var. brachyanthum
J. T. Howell
1938-8-8
14385
Mono
Long Valley
Comment
LA52299
Eriogonum cinereum
John Thomas Howell;
1927-8-15
2990
Ventura
Comment
RSA1006
Eriogonum cinereum
J. T. Howell
1927-8-15
628
Ventura
Conejo Grade.
213
Comment
RSA137116
Eriogonum deflexum var. baratum
J. T. Howell
1957-6-24
s.n.
Inyo
4 miles south of Olancha.
915
Comment
RSA128704
Eriogonum elegans
J. T. Howell
1957-4-29
32074
Monterey
Salinas River, King City.
Comment
CAS-BOT-BC249946
Eriogonum fasciculatum var. foliolosum
John Thomas Howell
1927-6-1
2407
Orange
Southern Puente Hills in the Santa Ana Canon [Canyon]
152
Comment
UCD100027
Eriogonum fasciculatum var. polifolium
John Thomas Howell
1962-5-20
37119
Kern
Kernville.
807
Comment
CAS-BOT-BC250382
Eriogonum gracile
John Thomas Howell
1929-9-21
4392
Contra Costa
Marsh Creek Road 8 miles se. of Clayton
Comment
UCD100124
Eriogonum gracile
John Thomas Howell
1950-11-7
27478
Monterey
15 miles west of Greenfield on Jamesburg Road, Santa Lucia Mountains.
Comment
RSA766505
Eriogonum gracillimum
J. T. Howell
1958-5-21
33034
Kern
7 miles east of Bakersfield.
213
Comment
CAS-BOT-BC261226
Eriogonum hirtiflorum
John Thomas Howell
1937-5-19
12947
San Benito
The Pinnacles
Comment
RSA98060
Eriogonum hirtiflorum
J. T. Howell
1952-10-28
28903
Tulare
Eleven Range View Point, Sequoia Park
1585
Comment
CAS-BOT-BC252867
Eriogonum incanum
John Thomas Howell
1949-7-22
25622
Tulare
Mt. Guyot
3657
Comment
CAS-BOT-BC252894
Eriogonum incanum
John Thomas Howell
1951-7-16
27811
Tulare
Near Eagle Lake, Mineral King and Vicinity
3048
Comment
CAS-BOT-BC252916
Eriogonum incanum
John Thomas Howell
1948-7-28
25131
Tulare
Juncion Pass Trail
3886
Comment
CAS-BOT-BC257450
Eriogonum inerme var. hispidulum
John Thomas Howell; Gordon H. True
1971-6-17
48066
Kern
Bodfish Grove of Piute Cypress, 2 miles east of Bodfish Gap
1432
Comment
CAS-BOT-BC257749
Eriogonum kennedyi var. alpigenum
John Thomas Howell
1947-7-25
23675
San Bernardino
Mt. San Gorgonio, San Bernardino Mts.
3505
Comment
CAS-BOT-BC266052
Eriogonum latifolium
John Thomas Howell
1933-10-8
11705
Marin
Pt. Reyes Peninsula
Comment
RSA766132
Eriogonum latifolium
J. T. Howell
1930-6-8
5257
Sonoma
1 mile east of Bodega Bay
Comment
CAS-BOT-BC259374
Eriogonum lobbii
John Thomas Howell
1937-7-25
13506
Trinity
Stuarts Fork of Trinity River
2225
Comment
CAS-BOT-BC259287
Eriogonum lobbii
John Thomas Howell
1946-7-21
22610
Inyo
Mono Pass Trail above Ruby Lake, Rock Creek Lake Basin
Comment
CAS-BOT-BC259495
Eriogonum luteolum var. caninum
John Thomas Howell
1944-7-7
19680
Marin
Above Camp Handy, Mt. Tamalpais
Comment
CAS-BOT-BC263102
Eriogonum maculatum
John Thomas Howell
1962-5-21
37179
Kern
Northeast of Lake Isabella
792
Comment
RSA204
Eriogonum maculatum
J. T. Howell
1927-8-1
539
San Bernardino
Warren's Well, Mojave Desert
915
Comment
UC849522
Eriogonum marifolium
John Thomas Howell
1937-7-26
13517
Siskiyou
Caribou Basin Salmon-Trinity Alps, Caribou Basin
1981
Comment
UCD100477
Eriogonum nidularium
John Thomas Howell
1958-5-28
33595
Inyo
Bishop Creek.
1524
Comment
CAS-BOT-BC27334
Eriogonum nudum var. auriculatum
John Thomas Howell
1933-8-18
11592
Monterey
Carmel Valley, 9 miles E of Carmel
Comment
GH364369
Eriogonum nudum var. decurrens
J. T. Howell
1933-8-19
11612
Unknown
Mt. Hermon
Comment
CAS-BOT-BC261701
Eriogonum nudum var. oblongifolium
John Thomas Howell
1930-8-24
5447
Lake
4 miles from Middletown on Adams Springs Road
Comment
CAS-BOT-BC269755
Eriogonum nudum var. paralinum
John Thomas Howell
1931-6-17
6729
Del Norte
5 miles s. of Crescent City
Comment
CAS-BOT-BC269879
Eriogonum nudum var. pubiflorum
John Thomas Howell
1950-7-26
27371
Inyo
Olancha Pass to Sage Flat
2743
Comment
CAS-BOT-BC269930
Eriogonum nudum var. pubiflorum
John Thomas Howell
1929-11-29
4545
Mariposa
5 miles from Mt. Bullion on road to Cathay Valley
Comment
CAS-BOT-BC266795
Eriogonum nudum var. scapigerum
John Thomas Howell
1940-8-1
15827
Tulare
Between Reflection Lake and Harrison Pass
Comment
RSA218012
Eriogonum ordii
J. T. Howell
1963-6-22
30509
Monterey
Near summit of Mustang Grade east of San Lorenzo Creek
Comment
CAS-BOT-BC258707
Eriogonum ovalifolium var. nivale
John Thomas Howell
1940-8-2
15920
Tulare
West of Reflection Lake
3505
Comment
RSA88595
Eriogonum pedunculatum
J. T. Howell
1951-6-26
27541
Plumas
Feather River Canyon
854
Comment
CAS-BOT-BC258172
Eriogonum pusillum
John Thomas Howell
1957-6-24
32744
Inyo
Olancha
1112
Comment
CAS-BOT-BC267694
Eriogonum roseum
John Thomas Howell
1973-10-31
50278
Tulare
Near Potwisha, Middle Fork of Kaweah River, Sierra Nevada
609
Comment
CAS-BOT-BC268395
Eriogonum roseum
John Thomas Howell
1933-8-13
11493
Santa Clara
3 miles from Smith Creek on road to San Jose
Comment
UCD101170
Eriogonum roseum
John Thomas Howell
1967-5-30
42449
Tulare
Kern Plateau, between Lamont Meadow and Long Valley.
1737
Comment
CAS-BOT-BC253058
Eriogonum roseum
John Thomas Howell
1929-7-21
4339
Merced
Merced River bottom at Hopton Bridge
Comment
CAS-BOT-BC268318
Eriogonum roseum
John Thomas Howell
1957-6-25
32761
Kern
Tehachapi Mts., 2.5 miles se. of Keene
914
Comment
CAS-BOT-BC267561
Eriogonum saxatile
John Thomas Howell
1927-7-9
2702
San Bernardino
Whiskey Spring, Cushenberry Road, desert side San Bernardino Mts.
1652
Comment
CAS-BOT-BC267530
Eriogonum saxatile
John Thomas Howell; Gordon H. True
1971-7-16
48636
Tulare
Near Last Chance Creek about 2 miles northwest of Johnsondale, Sierra Nevada
2042
Comment
CAS-BOT-BC268606
Eriogonum spergulinum var. pratense
John Thomas Howell
1950-7-22
27180
Tulare
Olancha Peak
3261
Comment
CAS-BOT-BC272595
Eriogonum spergulinum var. reddingianum
John Thomas Howell
1950-8-29
27440
Inyo
Onion Valley road
2438
Comment
CAS-BOT-BC272632
Eriogonum spergulinum var. reddingianum
John Thomas Howell
1958-8-9
34249
Madera
Miller Meadow
2103
Comment
NY283063
Eriogonum spergulinum var. reddingianum
J. T. Howell
1938-8-10
14504
Mono
Near Crestview
Comment
POM203845
Eriogonum spergulinum var. reddingianum
J. T. Howell
1934-7-6
12446
Lassen
Harvey Valley
Comment
CAS-BOT-BC271843
Eriogonum spergulinum var. reddingianum
John Thomas Howell; Gordon H. True
1970-7-27
46928
Tulare
Forest border of Big Meadow, on the east side of Joughin Camp, Kern Plateau
2377
Comment
CAS-BOT-BC271852
Eriogonum spergulinum var. reddingianum
John Thomas Howell
1942-8-1
17502
Tulare
Between Morane Lake and Sky Parlor Meadow
2834
Comment
CAS-BOT-BC272652
Eriogonum spergulinum var. reddingianum
John Thomas Howell
1938-8-10
14497
Mono
5 miles s. of Crestview
Comment
CAS-BOT-BC211385
Eriogonum sphaerocephalum var. halimioides
John Thomas Howell
1934-6-11
11926
Modoc
Parker Creek, Warner Mts.
1584
Comment
UC849749
Eriogonum strictum var. proliferum
John Thomas Howell
1937-7-29
13676
Siskiyou
n slope of Scott Mountains Scott Mountains
1676
Comment
CAS-BOT-BC267442
Eriogonum truncatum
John Thomas Howell
1934-4-8
11816
Contra Costa
10 miles from Clayton on Marsh Creek Road
Comment
CAS-BOT-BC267874
Eriogonum umbellatum var. bahiiforme
John Thomas Howell
1942-5-24
16967
Contra Costa
Eagle Peak, Mount Diablo
Comment
CAS-BOT-BC267846
Eriogonum umbellatum var. chlorothamnus
John Thomas Howell
1963-8-21
40226
Inyo
Whitney Portal Road, Sierra Nevada
2255
Comment
CAS-BOT-BC265088
Eriogonum umbellatum var. nevadense
John Thomas Howell
1948-7-31
25242
Inyo
Kearsarge Pass Trail
2895
Comment
CAS-BOT-BC268263
Eriogonum umbellatum var. nevadense
John Thomas Howell
1925-6-30
1263
El Dorado
Armstrong's, Emerald Bay, Lake Tahoe
1889
Comment
POM260788
Eriogonum umbellatum var. polyanthum
Thomas Howell
1940-6-13
8115
Modoc
[Unspecified]
Comment
CAS-BOT-BC262163
Eriogonum umbellatum var. subaridum
John Thomas Howell; Gordon H. True
1969-9-30
46377
Tulare
Cherry Hill Road 4 miles from Burton Camp, canyon of Poison Meadow Creek, Kern Plateau
2194
Comment
UCD101523
Eriogonum vimineum
John Thomas Howell
1955-7-19
30807
Plumas
Vinton.
1508
Comment
CAS-BOT-BC264134
Eriogonum vimineum
John Thomas Howell
1959-9-26
35079
Plumas
5 mi. NE of Storrie, Sierra Nevada
609
Comment
RSA136748
Eriogonum viridescens
J. T. Howell
1955-7-8
30618
Monterey
San Anonio River; 8.5 mi. from San Antonio Mission on roas to Santa Lucia Camp.
366
Comment
CAS-BOT-BC261867
Eriogonum wrightii var. subscaposum
John Thomas Howell
1942-7-27
17312
Tulare
Cliff Creek between Deer Creek and Pinto Lake
Comment
CAS-BOT-BC261983
Eriogonum wrightii var. subscaposum
John Thomas Howell; Gordon H. True
1967-8-7
43411
Tulare
About 2 miles northwest of Beach Meadow, Kern Plateau
2499
Comment
CAS-BOT-BC265008
Eriogonum wrightii var. subscaposum
John Thomas Howell
1927-11-13
3199
Los Angeles
1 1/2 miles east of Elizabeth Lake on road to Willow Springs, Liebre Mts.
914
Comment
CAS-BOT-BC297869
Eriophyllum confertiflorum
John Thomas Howell
1962-7-11
38625
Kern
S side of Black Mt, Greenhorn Mts
1417
Comment
CAS-BOT-BC304269
Eriophyllum confertiflorum
John Thomas Howell
1931-5-29
6581
Ventura
Santa Susana Pass
Comment
CAS-BOT-BC300934
Eriophyllum jepsonii
John Thomas Howell
1937-5-20
12988
San Benito
10 miles east of Paicines
Comment
CAS-BOT-BC301121
Eriophyllum lanatum var. achilleoides
John Thomas Howell
1937-7-29
13650
Siskiyou
Scott Mt. between Trinity and Siskiyou cos.
Comment
CAS-BOT-BC301199
Eriophyllum lanatum var. arachnoideum
John Thomas Howell
1927-5-8
2373
Marin
North side of Mt. Tamalpais
Comment
CAS-BOT-BC308175
Eriophyllum lanatum var. grandiflorum
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-26
53028
Calaveras
Near Dorrington, Sierra Nevada
1524
Comment
RSA44445
Eriophyllum lanatum var. integrifolium
J. T. Howell
1947-8-11
23992
Inyo
Baker Lakes
3506
Comment
CAS-BOT-BC308319
Eriophyllum lanatum var. obovatum
John Thomas Howell
1927-7-10
2738
San Bernardino
South side of Big Bear Lake, San Bernardino Mts.
2042
Comment
UC905070
Erodium brachycarpum
John Thomas Howell
1947-4-23
23075
Marin
e side Drakes Estero; Point Reyes Peninsula
Comment
POM180619
Eryngium armatum
J. T. Howell
1930-6-8
5295
Sonoma
4 miles north of Bodega Bay
Comment
CAS-BOT-BC218455
Eryngium pinnatisectum
John Thomas Howell
1954-9-6
30101
Tuolumne
New Montezuma
Comment
CAS-BOT-BC218463
Eryngium spinosepalum
John Thomas Howell
1952-10-29
28915
Fresno
Valley in low foothills, 7 miles east of Minkler
Comment
CAS-BOT-BC41542
Erysimum capitatum
John Thomas Howell
1940-7-28
15666
Fresno
Bubbs Creek. Near Charlotte Creek.
Comment
CAS-BOT-BC40867
Erysimum capitatum
John Thomas Howell
1931-5-23
6510
Monterey
Top of Jolon Grade, 13 miles west of King City, Santa Lucia Mountains.
Comment
CAS-BOT-BC54301
Erysimum capitatum
John Thomas Howell
1926-3-21
1738
Napa
Old toll road to Mount Saint Hellena.
Comment
CAS-BOT-BC54461
Erysimum capitatum
John Thomas Howell
1948-6-15
24361
San Luis Obispo
Red Hills southeast of Shandon.
762
Comment
GH379426
Erysimum capitatum
J. T. Howell & G. H. True
1969-5-12
45585
Unknown
near Glennville
1036
Comment
CAS-BOT-BC311789
Erysimum concinnum
John Thomas Howell; Catherine Best; Wilma Follette; Gordon H. True
1980-6-19
53726
Marin
Near Abbotts Lagoon, Point Reyes Peninsula
Comment
UC1177251
Erysimum concinnum
John Thomas Howell
1939-5-28
7379
Marin
Pt. Reyes lighthouse
Comment
CAS-BOT-BC55081
Erysimum perenne
John Thomas Howell
1943-7-17
18454
Nevada
West side of Donner Pass near Norden.
2133
Comment
CAS-BOT-BC55133
Erysimum perenne
John Thomas Howell
1951-7-18
27896
Tulare
Mineral King and Vicinity. West side, Franklin Pass.
3352
Comment
CAS-BOT-BC55135
Erysimum perenne
John Thomas Howell; Gordon H. True
1967-5-29
42343
Tulare
Sierra Nevada. Kern Plateau. Midway between Chimney and Lamont meadows.
1889
Comment
RSA66153
Erysimum teretifolium
J. T. Howell
1939-6-16
s.n.
Santa Cruz
Ben Lomond Sand Hills
Comment
CAS-BOT-BC153586
Erythranthe moniliformis
John Thomas Howell
1958-8-16
34486
Madera
Sadler Lake. East Fork of Granite Creek
2848
Comment
CAS-BOT-BC504535
Erythronium multiscapideum
John Thomas Howell; Gordon H. True
1969-4-9
45492
Butte
Magalia
701
Comment
UC1042408
Erythronium purpurascens
John Thomas Howell
1951-6-28
27684
Plumas
Eureka Peak
1981
Comment
CAS-BOT-BC403202
Eschscholzia californica
John Thomas Howell
1954-4-22
29141
Marin
South end of Tiburon Peninsula
Comment
CAS-BOT-BC310425
Eucephalus breweri
John Thomas Howell
1942-7-31
17428
Tulare
Between Big Arroyo and Chagoopa Plateau
Comment
CAS-BOT-BC312070
Eucephalus breweri
John Thomas Howell
1958-8-17
34550
Madera
Between Cora Lake and The Niche, East Fork of Granite Creek, Sierra Nevada
2560
Comment
CAS-BOT-BC202388
Euphorbia ocellata
John Thomas Howell
1931-11-1
8168
Calaveras
At Pardee Dam, Mokelumne River
Comment
UCD142677
Euphorbia prostrata
John Thomas Howell
1969-9-15
46227
Tuolumne
Sierra Nevada. Sonora.
548
Comment
CAS-BOT-BC310577
Eurybia integrifolia
John Thomas Howell
1944-8-6
19995
Tuolumne
Between Dog Lake and Tuolumne Meadows
Comment
CAS-BOT-BC310521
Eurybia integrifolia
John Thomas Howell
1945-9-29
21529
El Dorado
Near Tamrack [Tamarack] Lake
Comment
RSA944
Euthamia occidentalis
J. T. Howell
1927-10-29
777
Orange
Bryant Ranch near Long Beach.
15
Comment
UC1106096
Festuca californica
John Thomas Howell
1945-6-12
20952
Marin
Point Reyes Peninsula, near radio station Point Reyes Peninsula
Comment
CAS-BOT-BC278306
Festuca californica subsp. californica
John Thomas Howell
1945-6-19
21071
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC283194
Festuca californica subsp. californica
John Thomas Howell; Catherine Best; Wilma Follette; Mary P. Wells; Gordon H. True
1981-5-14
54013
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on teh west slope of Sonoma Mountain
457
Comment
CAS-BOT-BC282506
Festuca elmeri
John Thomas Howell
1947-5-4
23121
Marin
San Rafael Hills
Comment
CAS-BOT-BC282513
Festuca elmeri
John Thomas Howell
1944-7-7
19674
Marin
Fish Grade between Phoenix and Lagunitas Lakes
Comment
POM203058
Festuca idahoensis
J. T. Howell
1934-6-30
12293
Modoc
Duncan Horse Camp.
Comment
CAS-BOT-BC278902
Festuca occidentalis
John Thomas Howell
1951-7-15
27778
Tulare
Mineral King road
1828
Comment
RSA127202
Festuca occidentalis
J. T. Howell
1943-6-6
18216
Marin
Tenderfoot Trail above Mill Valley.
Comment
CAS-BOT-BC278994
Festuca rubra
John Thomas Howell
1966-4-18
41489
Marin
John Thomas Howell Botanical Garden, Tiburon
Comment
CAS-BOT-BC279023
Festuca rubra
John Thomas Howell
1951-6-28
27659
Plumas
Johnsonville
1584
Comment
CAS-BOT-BC278599
Festuca saximontana
John Thomas Howell
1951-7-17
27853
Tulare
Mineral King and vicinity. White Chief Trail
2895
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-BC217644
Fraxinus dipetala
John Thomas Howell
1927-7-26
2844
Orange
Claymine Canyon, n. Santa Ana Mts.
243
Comment
CAS-BOT-BC218551
Fraxinus latifolia
John Thomas Howell; Gordon H. True
1966-7-10
41598
Tulare
Kern River at Roads End, Sierra Nevada
1066
Comment
CAS-BOT-BC223501
Fraxinus latifolia
John Thomas Howell
1956-12-4
31991
Mariposa
Merced River Canyon 2.6 miles above Briceburg
Comment
CAS-BOT-BC212381
Fremontodendron californicum
John Thomas Howell; Alice Eastwood
1938-5-15
5533
Lake
Mirabel Mine
Comment
CAS-BOT-BC136065
Fritillaria affinis
John Thomas Howell
1926-4-11
1849
Alameda
Cedar Mt. above Rancho Repose
Comment
CAS-BOT-BC505272
Fritillaria atropurpurea
John Thomas Howell
1939-8-2
14896
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
LA50688
Galium angustifolium
John Thomas Howell;
1930-5-19
5176
Ventura
Monica Mountains, Pt. Mugu
Comment
RSA66720
Galium bolanderi
J. T. Howell
1930-5-15
5166
Kern
Hills near Glenville, Greenhorn Range.
976
Comment
CAS-BOT-BC217439
Galium californicum subsp. luciense
John Thomas Howell
1965-5-11
41316
Monterey
East slope of Cone Peak, Santa Lucia Range
1298
Comment
RSA118024
Galium clementis
J. T. Howell
1955-5-17
s.n.
Monterey
East end of summit ridge of Juniper Serra Peak.
1768
Comment
JEPS62620
Galium divaricatum
John Thomas Howell and Gordon H. True
1967-6-13
3572
Yuba
river e Wheatland; Bear River, Camp Far West Reservoir
60
Comment
SBBG29183
Galium divaricatum
J. T. Howell
1943-6-19
18237
Napa
hills W of Napa Valley between St Helena and Mt St John
228
Comment
GH385969
Galium hallii
J. T. Howell & G. H. True
1967-7-3
42883
Unknown
about 1.5 miles northeast of Long Valley, on road to Chimney Meadow. Kern Plateau
2103
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-BC217615
Galium stellatum subsp. stellatum
John Thomas Howell; Alice Eastwood
1940-3-28
7784
Inyo
Titus Canyon
Comment
JEPS29538
Galium trifidum var. pusillum
John Thomas Howell
1959-9-23
34886
Lassen
n end of lake Lassen Volcanic National Park, Juniper Lake
2057
Comment
CAS-BOT-BC188515
Garrya elliptica
John Thomas Howell
1930-9-14
5472
Mendocino
4.5 miles n. Ft. Bragg
Comment
CAS-BOT-BC199065
Garrya elliptica
John Thomas Howell
1968-5-23
s.n.
San Benito
On road from San Juan Bautista to Fremont Peak
Comment
CAS-BOT-BC200613
Garrya elliptica
John Thomas Howell
1930-6-15
5304
Alameda
NE. slope of Grizzley [Grizzly] Peak, Berkeley Hills
Comment
CAS-BOT-BC144445
Garrya fremontii
John Thomas Howell
1940-6-1
15567
Mariposa
Snow Creek Trail
1676
Comment
CAS-BOT-BC282586
Gastridium phleoides
John Thomas Howell
1956-12-3
31974
Mariposa
Aqua Fria, Sierra Nevada
Comment
CAS-BOT-BC283923
Gastridium ventricosum
John Thomas Howell
1964-6-29
40741
San Luis Obispo
Adjacent to the Protestant Cemetary, about 1 mile N of Cambria
Comment
CAS-BOT-BC56244
Gaultheria humifusa
John Thomas Howell
1946-7-28
22824
Inyo
Gem Lake, Rock Creek Lake Basin
3352
Comment
RSA54096
Gaultheria humifusa
J. T. Howell
1945-9-25
21500
Tuolumne
Young Lake
Comment
CAS-BOT-BC58884
Gaultheria shallon
John Thomas Howell
1949-5-15
25318
Marin
Inverness Ridge west of Inverness
Comment
RSA39993
Gayophytum diffusum subsp. parviflorum
J. T. Howell
1944-8-14
20469
Tuolumne
Tuolumne Canyon above Glen Aulin.
Comment
RSA44284
Gayophytum diffusum subsp. parviflorum
J. T. Howell
1947-8-8
23903
Inyo
Third to fifth Lake, Big Pine Lakes.
3201
Comment
CAS-BOT-BC208057
Genista monspessulana
John Thomas Howell
1959-9-20
34676
Butte
Lower foothills, eastern outskirts of Oroville
60
Comment
CAS-BOT-BC211851
Genista monspessulana
John Thomas Howell
1947-7-14
23344
Monterey
Big Sur
Comment
CAS-BOT-BC211860
Genista monspessulana
John Thomas Howell
1947-7-14
23344
Monterey
Big Sur
Comment
RSA118020
Gilia achilleifolia subsp. multicaulis
J. T. Howell
1955-5-21
30241
Monterey
Hastings Reservation, Santa Lucia Mountains
Comment
UCR74666
Gilia capitata subsp. abrotanifolia
J. T. Howell, G. H. True
1968-5-13
44318
Tulare
Sierra Nevada Mtns., Kern Plateau, Cherry Hill Rd., Brush Creek Canyon
1585
Comment
POM179726
Gilia capitata subsp. tomentosa
J. T. Howell
1930-6-8
5365
Sonoma
1 mile east of Bodega Bay
Comment
CAS-BOT-BC226203
Gilia interior
John Thomas Howell; Gordon H. True
1969-5-13
45683
Kern
Spanish Needle Creek road to Lamont Meadow
1463
Comment
UCR88756
Gilia inyoensis
J. T. Howell, G. H. True
1967-7-5
43064
Tulare
Kern Plateau, 6.4 mi north of Chimney Meadow
2226
Comment
RSA469396
Gilia latiflora subsp. davyi
J. T. Howell
1948-4-26
s.n.
Kern
2 miles north of Mohave.
Comment
CAS-BOT-BC226376
Gilia latiflora subsp. elongata
John Thomas Howell
1928-4-4
3703
San Bernardino
11 miles ne. of Johannesburg on road to Trona, Mojave Desert
Comment
CAS-BOT-BC303715
Glebionis segetum
John Thomas Howell
1943-7-4
18277
Marin
Inverness
Comment
RSA121031
Glinus lotoides
J. T. Howell
1956-9-13
31875
Marin
Strand of Bon Tempe Reservoir.
Comment
CAS-BOT-BC181027
Glossopetalon spinescens
John Thomas Howell; Alice Eastwood
1940-3-28
7798
Inyo
Titus Canyon
Comment
CAS-BOT-BC303821
Gnaphalium
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54119
Plumas
Quincy
1036
Comment
RSA856
Gnaphalium chilense
J. T. Howell
1927-7-21
453
Orange
Santa Ana River bottom, Rancho Santa Ana.
152
Comment
CAS-BOT-BC302507
Gnaphalium palustre
John Thomas Howell
1958-7-23
33820
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC302666
Gnaphalium palustre
John Thomas Howell
1939-8-10
15254
Siskiyou
Sky High Valley, Marble Mts.
1828
Comment
CAS-BOT-BC303193
Gnaphalium palustre
John Thomas Howell
1940-8-2
15902
Tulare
Slope north of Reflection Lake
3352
Comment
CAS-BOT-BC307376
Gnaphalium palustre
John Thomas Howell
1966-7-29
42016
Plumas
Quincy, Sierra Nevada
1036
Comment
RSA44446
Gnaphalium palustre
J. T. Howell
1947-8-16
24145
Inyo
Big Pine Lakes Trail.
2805
Comment
CAS-BOT-BC304463
Grindelia hirsutula
John Thomas Howell
1939-7-16
14854
Marin
Between Mt. Theater and Bootjack, Mt. Tamalpais
Comment
CAS-BOT-BC304859
Grindelia hirsutula
John Thomas Howell
1932-10-19
10862
Santa Cruz
Mouth of Waddell Creek, 1.5 miles s. of San Mateo County line
Comment
CAS-BOT-BC304892
Grindelia hirsutula
John Thomas Howell
1929-6-30
4313
Napa
5 mile s. of Calistoga on highway to St. Helena, Napa Valley
Comment
CAS-BOT-BC304901
Grindelia hirsutula
J. T. Howell
1932-10-8
10804
Napa
Napa River
Comment
CAS-BOT-BC305009
Grindelia hirsutula
J. T. Howell
1929-12-5
4550
Stanislaus
1 1/2 miles se. of Modesto
Comment
CAS-BOT-BC314456
Grindelia hirsutula
John Thomas Howell
1945-7-1
21265
Marin
Tiburon
Comment
CAS-BOT-BC314583
Grindelia hirsutula
John Thomas Howell
1933-9-17
11692
Solano
Collinsville
Comment
UC526216
Grindelia hirsutula
John Thomas Howell
1933-8-11
11489
San Francisco
San Francisco , Presidio (Presidio)
Comment
UC897043
Grindelia hirsutula
John Thomas Howell
1937-7-31
13720
Humboldt
salt marsh bordering Humboldt Bay at Arcata; Humboldt Bay
Comment
CAS-BOT-BC304791
Grindelia hirsutula
John Thomas Howell
1930-5-8
4752
Monterey
Summit of San Juan Grade at San Benito-Monterey Co. line
Comment
CAS-BOT-BC305023
Grindelia hirsutula
John Thomas Howell
1929-7-21
4347
Merced
On Dry Creek at Merced River bottom
Comment
CAS-BOT-BC314436
Grindelia hirsutula
John Thomas Howell
1946-6-20
22097
Marin
Between Marin Beach and Stinson Beach
Comment
CAS-BOT-BC314625
Grindelia hirsutula
John Thomas Howell
1934-6-16
12224
Shasta
3.5 miles NE of McArthur
Comment
GH417645
Grindelia hirsutula var. davyi
J. T. Howell
1946-11-3
23033
Unknown
Hamilton Field
Comment
GH417698
Grindelia stricta var. platyphylla
J. T. Howell
1932-10-19
10862
Unknown
mouth of Waddell Creek
Comment
UCR244688
Hackelia nervosa
J. T. Howell, T. C. Fuller, G. D. Barbe
1981-6-24
54263
Plumas
Sierra Nevada Mtns., C. 1.4 miles southeast [presumably on Mt. Hough Crystal Lake Rd.] of Mt. Hough on road to Quincy
1951
Comment
GH8710
Haplopappus whitneyi subsp. discoideus
J. T. Howell
1939-8-9
15236
Unknown
Shackleford Creek Trail south of Sky High Valley, ca. 6000 feet., Marble Mts.
Comment
CAS-BOT-BC302203
Harmonia hallii
John Thomas Howell
1943-5-11
18050
Lake
2.9 miles north of Middletown
Comment
CAS-BOT-BC306658
Helenium bigelovii
John Thomas Howell
1924-6-13
405
Mariposa
Bed of Merced River, Wawona
1219
Comment
CAS-BOT-BC314715
Helianthella californica var. californica
John Thomas Howell
1931-6-15
6704
Mendocino
Carl Purdy's place near Ukiah, Mayacama Mts.
Comment
CAS-BOT-BC305399
Helianthus annuus
John Thomas Howell
1950-11-9
27488
Kern
Tejon Pass
1066
Comment
POM180773
Helianthus bolanderi
J. T. Howell
1930-10-19
5616
Napa
Dry slope, 3 miles from Aetna Springs on Butte Valley road to Middletown
Comment
CAS-BOT-BC313435
Hemizonella minima
John Thomas Howell
1961-6-20
36543
Shasta
Lassen Highway 1 mi. nw. of Lost Creek Bridge, Lassen Volcanic National Park
1798
Comment
RSA608263
Hemizonia congesta
J. T. Howell, J. W. Stacey
1936-7-26
12672
Sonoma
Pitkin Marsh, 5 miles north of Sebastopol.
Comment
CAS-BOT-BC306031
Hemizonia congesta subsp. clevelandii
John Thomas Howell
1961-9-23
36825
Plumas
Indian Valley
1082
Comment
CAS-BOT-BC306249
Hemizonia congesta subsp. lutescens
John Thomas Howell
1944-9-24
20746
Marin
Stinson Beach
Comment
CAS-BOT-BC309660
Hemizonia congesta subsp. lutescens
John Thomas Howell
1930-9-14
5482
Mendocino
1 mile e. of Boonville
Comment
CAS-BOT-BC309835
Hemizonia congesta subsp. luzulifolia
John Thomas Howell
1930-10-19
5612
Napa
1 mile east of Aetna Springs, Pope Valley
Comment
GH414568
Hemizonia plumosa
J. T. Howell
1933-8-18
11572
Unknown
16 miles east of Jamesburg, Santa Lucia Mts.
Comment
POM181072
Hemizonia pungens subsp. pungens
J. T. Howell
1930-9-28
5489
Contra Costa
2 miles from Concord on road to Walnut Creek.
Comment
POM194219
Hemizonia pungens subsp. pungens
J. T. Howell
1929-10-26
4542
Napa
9 miles N of Vallejo.
Comment
CAS-BOT-BC388517
Herniaria hirsuta var. cinerea
John Thomas Howell
1965-4-25
41066
Madera
5 miles northeast of Madera
Comment
CAS-BOT-BC388528
Herniaria hirsuta var. cinerea
John Thomas Howell
1970-11-8
47512
Kern
Bed of Lake Isabella, 6 miles from South Fork Kern River bridge on road from Weldon to Kernville
792
Comment
CAS-BOT-BC55288
Hesperis matronalis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54124
Plumas
Sierra Nevada. Quincy. On bank of Spanish Creek.
1036
Comment
CAS-BOT-BC1195
Hesperolinon adenophyllum
John Thomas Howell
1945-6-18
20980
Lake
Near Glenbrook
Comment
RSA600936
Hesperomecon affine
J. T. Howell
1936-3-29
12629
Alameda
Tesla Hills
Comment
RSA35295
Hesperomecon linearis
J. T. Howell
1944-6-11
19619
Santa Cruz
1 mile east of Felton.
Comment
SEINET10460727
Heterocodon rariflorum
Howell
1940-5-12
Howell 15421
Marin
Lagunitas Creek
Comment
CAS-BOT-BC310273
Heterotheca grandiflora
John Thomas Howell; Gordon H. True
1978-4-4
52728
Solano
Airport, Rio Vista
Comment
CAS-BOT-BC318882
Heterotheca grandiflora
John Thomas Howell
1926-5-9
1976
Merced
Miliken Bridge, Merced River
Comment
CAS-BOT-BC311068
Heterotheca oregona var. rudis
John Thomas Howell
1937-7-18
13114
Lake
7 miles n. of Lower Lake
Comment
CAS-BOT-BC311117
Heterotheca oregona var. scaberrima
John Thomas Howell
1931-9-6
8034
San Benito
Bed of Tres Pinos River, 3 miles north of Paicines
Comment
CAS-BOT-BC311159
Heterotheca sessiliflora subsp. bolanderi
John Thomas Howell
1925-9-12
1432
Alameda
Oakland Hills
Comment
CAS-BOT-BC311211
Heterotheca sessiliflora subsp. echioides
John Thomas Howell
1932-10-16
10837
Alameda
8 miles from Livermore on Tesla Road
Comment
CAS-BOT-BC310829
Heterotheca sessiliflora subsp. fastigiata
John Thomas Howell
1962-9-25
38872
Kern
Kernville
807
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-BC312316
Hieracium
John Thomas Howell
1958-7-30
34104
Fresno
West of Simpson Meadow, Middle Fork of the Kings River, Sierra Nevada
1813
Comment
POM259365
Hieracium albiflorum
J. T. Howell
1939-8-2
14895
Siskiyou
Spirit Lake, Marble Mountains.
1829
Comment
CAS-BOT-BC318669
Hieracium horridum
John Thomas Howell
1946-7-22
22676
Fresno
Mono Creek Canyon
3048
Comment
CAS-BOT-BC49517
Hieracium scouleri
John Thomas Howell
1934-6-11
11955
Modoc
Parker Creek.
1584
Comment
CAS-BOT-BC55349
Hirschfeldia incana
John Thomas Howell
1962-5-21
37196
Kern
Sierra Nevada. Northeast of Lake Isabella.
792
Comment
CAS-BOT-BC55416
Hirschfeldia incana
John Thomas Howell
1957-5-17
32248
San Francisco
San Francisco. Bayview Hills.
Comment
CDA2184
Holcus lanatus
J. T. Howell
1945-7-29
21355
Marin
Bolinas.
0
Comment
UCD98923
Hollisteria lanata
John Thomas Howell
1958-5-21
33032
Kern
7 miles east of Bakerfield.
213
Comment
UCR66555
Hollisteria lanata
J. T. Howell
1948-6-14
24347
Kern
Inner Coast Range, Cedar Canyon
610
Comment
CAS-BOT-BC325869
Holocarpha heermannii
John Thomas Howell
1957-6-23
32704
Kern
Edison
Comment
CAS-BOT-BC320261
Holocarpha obconica
John Thomas Howell
1930-9-28
5500
Contra Costa
6.3 miles from Byron on the Marsh Creek Road
Comment
CAS-BOT-BC320305
Holocarpha virgata
John Thomas Howell
1956-9-13
31876
Marin
Lagunitas Meadows near Lake Lagunitas
Comment
CAS-BOT-BC320368
Holocarpha virgata
John Thomas Howell
1927-8-6
2957
San Diego
On the mesa north of Old Town and San Diego
91
Comment
CAS-BOT-BC320347
Holocarpha virgata
John Thomas Howell
1930-10-5
5536
Solano
4 miles east of Rio Vista Junction on road to Suisun
Comment
RSA44228
Holodiscus microphyllus
J. T. Howell
1947-8-3
23702
Inyo
Fifth Lake, Big PIne Lakes.
3354
Comment
CAS-BOT-BC147756
Holodiscus microphyllus var. microphyllus
John Thomas Howell; Gordon H. True
1970-6-24
46691
Tulare
Summit of North Manter Pass, Big Meadow to Manter Meadow, Kern Plateau
2499
Comment
CAS-BOT-BC152752
Holodiscus microphyllus var. microphyllus
John Thomas Howell
1949-7-30
25921
Tulare
Volcanic cone at Tunnel
2926
Comment
CAS-BOT-BC311888
Holozonia filipes
John Thomas Howell
1930-10-12
5583
El Dorado
Bed of North Fork of Cosumnes River, 6.5 miles n. of Plymouth
Comment
RSA92239
Holozonia filipes
J. T. Howell
1945-8-12
21372
Marin
Rock Spring, Mt Tamalpais
Comment
CAS-BOT-BC281257
Hordeum brachyantherum subsp. brachyantherum
John Thomas Howell
1933-5-14
11229
Contra Costa
St. Mary's College
Comment
CAS-BOT-BC284599
Hordeum brachyantherum subsp. brachyantherum
John Thomas Howell
1941-7-31
16557
Madera
Agnew Pass Trail
Comment
CAS-BOT-BC289302
Hordeum brachyantherum subsp. brachyantherum
John Thomas Howell; Gordon H. True
1967-9-19
43847
Tulare
Kern River South Fork, Kennedy Meadows Campground, Kern Plateau, Sierra Nevada
1859
Comment
CAS-BOT-BC284948
Hordeum brachyantherum subsp. californicum
John Thomas Howell
1957-5-19
32365
Stanislaus
Del Puerto Canyon
Comment
CAS-BOT-BC289500
Hordeum brachyantherum subsp. californicum
John Thomas Howell
1943-5-15
18068
Marin
Tiburon Peninsula
Comment
CAS-BOT-BC284704
Hordeum jubatum
John Thomas Howell
1960-8-20
36246
Tehama
Near Lassen Volcanic National Park. Morgan
1463
Comment
CAS-BOT-BC284728
Hordeum jubatum
John Thomas Howell
1977-8-11
52697
Plumas
At north end of Frenchmans Reservoir
1706
Comment
CAS-BOT-BC285125
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1957-5-26
32474
San Francisco
San Francisco. North base of Lone Mt.
Comment
CAS-BOT-BC289580
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1948-4-26
24287
Merced
Near Los Banos
Comment
CAS-BOT-BC284829
Hordeum murinum subsp. glaucum
John Thomas Howell; Gordon H. True
1969-5-13
45721
Kern
Onyx
883
Comment
CAS-BOT-BC289348
Hordeum murinum subsp. glaucum
John Thomas Howell
1949-4-6
25294
Marin
Hamilton Field
Comment
RSA51281
Hordeum murinum subsp. glaucum
J. T. Howell
1949-4-24
25307
Marin
Fort McDowell, Angel Island
Comment
UC905068
Hordeum murinum subsp. glaucum
John Thomas Howell
1949-4-24
25307
Marin
Fort McDowell Angel Island, Fort McDowell
Comment
CAS-BOT-BC289382
Hordeum murinum subsp. glaucum
John Thomas Howell
1957-6-16
32657
San Francisco
Third and Davidson Streets, San Francisco
Comment
RSA223640
Hordeum murinum subsp. glaucum
J. T. Howell
1956-8-4
31744
San Francisco
S. Van Ness Ave. at Market St.
Comment
CAS-BOT-BC289416
Hordeum murinum subsp. leporinum
John Thomas Howell
1946-5-12
21764
Marin
Between Fairfax and Meadows Club
Comment
CAS-BOT-BC289438
Hordeum murinum subsp. leporinum
John Thomas Howell
1961-6-21
36620
Plumas
Greenville, Sierra Nevada
1097
Comment
RSA88555
Horkelia fusca subsp. parviflora
J. T. Howell
1951-6-27
27594
Plumas
McRae Meadow.
1982
Comment
CAS-BOT-BC536225
Horkelia fusca var. parviflora
John Thomas Howell
1939-8-8
15140
Siskiyou
Between Marble Valley and Sky High Valley, Marble Mts.
Comment
CAS-BOT-BC144050
Horkelia rydbergii
John Thomas Howell
1947-7-25
23642
San Bernardino
East of Dry Lake, San Bernardino Mts.
2804
Comment
CAS-BOT-BC143356
Horkelia tridentata
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-26
53061
Calaveras
Near Dorrington
1524
Comment
CAS-BOT-BC137353
Horkeliella purpurascens
John Thomas Howell
1949-7-29
25872
Tulare
Tunnel to Groundhog Meadow
2682
Comment
UC1042549
Horkeliella purpurascens
John Thomas Howell
1950-7-14
26819
Tulare
Bakeoven Meadows; Sierra Nevada, South Fork of Kern River
2468
Comment
CAS-BOT-BC315911
Hulsea algida
John Thomas Howell
1949-8-9
26182
Tulare
Cirque Peak
3733
Comment
CAS-BOT-BC401244
Hypericum perforatum
John Thomas Howell
1945-7-15
s.n.
Marin
Ridgecrest Rd., Fairfax
Comment
CAS-BOT-BC401391
Hypericum scouleri
John Thomas Howell
1962-7-10
38499
Kern
Shirley Meadows, Greenhorn Mountains
2011
Comment
CAS-BOT-BC311567
Isocoma acradenia var. bracteosa
John Thomas Howell
1970-11-7
47499
Kern
Mouth of Kern River Canyon
213
Comment
CAS-BOT-BC315713
Isocoma menziesii var. diabolica
John Thomas Howell
1931-9-7
8075
San Benito
San Benito River Canyon 8 miles nw. of Hernandez
Comment
CAS-BOT-BC57686
Isoetes bolanderi
John Thomas Howell
1949-8-6
26080
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC57709
Isoetes bolanderi
John Thomas Howell
1944-8-17
20679
Tuolumne
Near Parsons Lodge, Tuolumne Meadows
Comment
CAS-BOT-BC69994
Isoetes bolanderi
John Thomas Howell
1946-7-16
22477
Inyo
Between gem and long lakes. Rock Creek Lake Basin.
Comment
CAS-BOT-BC57738
Isoetes howellii
John Thomas Howell
1937-6-6
13015
Sonoma
Sebastopol
Comment
CAS-BOT-BC69876
Isoetes nuttallii
John Thomas Howell
1940-3-17
15390
Marin
Lagunitas Meadows.
Comment
RSA216124
Isolepis carinata
J. T. Howell
1963-5-18
39322
Monterey
2.5 miles south of Aromas.
61
Comment
CAS-BOT-BC112424
Isolepis cernua
John Thomas Howell
1927-7-19
2799
Orange
Moist shady situation, Santa Ana River bottom, Santa Ana Canyon.
152
Comment
CAS-BOT-BC112530
Isolepis cernua
John Thomas Howell
1956-8-26
31793
San Francisco
Damp strand of Pine Lake.
Comment
RSA94
Isolepis cernua
J. T. Howell
1927-7-6
278
Orange
Santa Ana River bottom, Rancho Santa Ana
152
Comment
CAS-BOT-BC324775
Iva axillaris
John Thomas Howell
1970-9-26
47487
Kern
Piute Springs 6 miles north of Loraine, Sierra Nevada
1158
Comment
CAS-BOT-BC324817
Iva axillaris
John Thomas Howell
1959-9-24
34972
Plumas
Beckwourth, Sierra Nevada
1487
Comment
CAS-BOT-BC158985
Ivesia saxosa
John Thomas Howell
1963-8-20
40195
Inyo
Whitney Portal Road - Sierra Nevada
2346
Comment
SD147520
Ivesia unguiculata
John Howell
1958-8-9
34252
Madera
Miller Meadow
2103
Comment
CAS-BOT-BC48200
Jamesia americana var. rosea
John Thomas Howell
1951-7-17
27866
Tulare
White Chief Trail
2895
Comment
RSA84406
Jepsonia heterandra
John T. Howell
1931-10-12
8151
Mariposa
Merced River Canyon near Bagby
Comment
UCD141383
Juncus bufonius
John Thomas Howell
1960-7-19
35705
Plumas
Drakesbad, Lassen Volcanic National Park.
1676
Comment
RSA54108
Juncus chlorocephalus
J. T. Howell
1946-8-30
22908
El Dorado
Upper Angora Lake
Comment
UC618438
Juncus covillei
John Thomas Howell
1937-7-20
13147
Shasta
near French Gulch
Comment
RSA40208
Juncus ensifolius
J. T. Howell
1943-8-3
18954
Glenn
Plaskett Meadows.
1829
Comment
POM304570
Juncus orthophyllus
J. T. Howell
1941-7-25
16457
Madera
Agnew Meadows
Comment
RSA136750
Juncus patens
J. T. Howell
1955-7-8
30628
Monterey
Santa Lucia Camp, Arroyo Seco River.
610
Comment
CAS-BOT-BC312665
Juncus tiehmii
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-15
53801
Kern
Kern Plateau, Pine Flat
2194
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-BC81016
Juniperus californica
John Thomas Howell
1931-2-23
5748
Mariposa
6 miles from Coulterville on road to Bogby
Comment
RSA30
Juniperus occidentalis var. australis
J. T. Howell
1927-7-10
370 A
San Bernardino
Big Bear Lake
2042
Comment
A424476
Justicia californica
J. T. Howell
1928-1-30
3306
Unknown
two miles east of Shaver's Well, Colorado Desert
Comment
CAS-BOT-BC236825
Keckiella breviflora var. breviflora
John Thomas Howell
1955-7-7
30561
Monterey
Ridge southeast of Bear Mt., Santa Lucia Mountains
1371
Comment
CAS-BOT-BC235688
Keckiella breviflora var. glabrisepala
John Thomas Howell
1960-6-6
35389
Fresno
Kings Canyon road, 4 mi. w. of Horseshoe Bend
1036
Comment
RSA1321
Keckiella cordifolia
J. T. Howell
1928-7-8
1055
Riverside
Santa Ana Mountains above Glen Ivy
1067
Comment
CAS-BOT-BC236906
Keckiella corymbosa
John Thomas Howell
1937-7-31
13704
Trinity
11 miles west of Big Bar
Comment
CAS-BOT-BC238280
Keckiella rothrockii
John Thomas Howell
1950-7-24
27316
Tulare
Ridge s. of Monache Creek
3352
Comment
NY790402
Keckiella rothrockii var. rothrockii
J. T. Howell
1980-7-16
53880
Tulare
Sherman Pass Road 2.5 miles northeast of the pass, in Trout Creek drainage, Kern Plateau.
2560.3
Comment
JEPS12486
Kelloggia galioides
John Thomas Howell
1925-6-29
1258
El Dorado
Emerald Bay Lake Tahoe (Armstrong's)
1889
Comment
UC1106120
Koeleria macrantha
John Thomas Howell
1941-5-25
16212
Marin
Rifle Camp Mt. Tamalpais (Mt. Tamalpais); , Rifle Camp
Comment
CAS-BOT-BC273782
Koeleria pyramidata
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
53998
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-BC61425
Krameria bicolor
John Thomas Howell; Martha Hilend
1928-4-15
171
Riverside
Coachella Valley near Thousand Palms
Comment
JEPS40362
Kyhosia bolanderi
John Thomas Howell
1926-7-31
Plumas
near Prattville
1463
Comment
CAS-BOT-BC340414
Lactuca biennis
John Thomas Howell
1973-7-9
49705
Plumas
Near Indian Falls, Indian Creek
914
Comment
RSA219999
Lactuca saligna
J. T. Howell
1963-9-4
40343
Monterey
Along highway near P. G. and E. Co. generator, Moss Landing.
Comment
CAS-BOT-BC340509
Lactuca serriola
John Thomas Howell
1960-8-20
36244
Tehama
Near Lassen Volcanic National Park. Morgan
1463
Comment
UC710613
Lactuca virosa
John Thomas Howell
1943-8-22
19310
Contra Costa
San Leandro Creek Canyon
243
Comment
CAS-BOT-BC340702
Lactuca virosa
John Thomas Howell
1954-9-8
30108
San Mateo
Skyline Blvd. at San Andreas Lake, 2 miles west of San Bruno
Comment
CAS-BOT-BC341635
Lagophylla ramosissima
John Thomas Howell
1926-10-9
2215
San Mateo
Lake San Andreas
Comment
CAS-BOT-BC272438
Lamarckia aurea
John Thomas Howell
1964-4-29
40687
Tuolumne
At Tuolumne River Bridge, 2.5 miles east of Jacksonville, Sierra Nevada
198
Comment
CAS-BOT-BC338268
Lasthenia californica
John Thomas Howell
1926-3-27
1749
Napa
Soscol
Comment
POM361516
Lasthenia californica
J. T. Howell
1931-4-2
6051
Napa
Wooden Valley Grade 4 miles E of Napa.
Comment
CAS-BOT-BC324949
Lasthenia californica subsp. bakeri
John Thomas Howell
1947-4-30
23114
Marin
Dillons Beach
Comment
UC1176888
Lasthenia californica subsp. macrantha
John Thomas Howell
1939-6-4
Marin
Point Reyes lighthouse Point Reyes
Comment
CAS-BOT-BC353482
Lasthenia fremontii
John Thomas Howell
1954-5-16
29605
El Dorado
Sierra Nevada, 4 miles W of Shingle Springs
Comment
CAS-BOT-BC353338
Lasthenia fremontii
John Thomas Howell
1929-4-18
4164
Merced
Dried bed of winter-pool, Merced.
51
Comment
CAS-BOT-BC352791
Lasthenia glabrata subsp. glabrata
John Thomas Howell
1933-4-1
10925
Sonoma
Petaluma
Comment
CAS-BOT-BC366321
Lasthenia minor
J. T. Howell
1936-5-21
2628
Mendocino
Cleone
Comment
CAS-BOT-BC321782
Layia fremontii
John Thomas Howell
1976-4-2
51557
Butte
About 2 miles SE of Chico
60
Comment
CAS-BOT-BC321794
Layia gaillardioides
John Thomas Howell
1943-5-22
18141
Marin
Fairfax hills
Comment
CAS-BOT-BC321086
Layia glandulosa
John Thomas Howell
1958-5-23
33237
Inyo
Alabama Hills
1463
Comment
CAS-BOT-BC321462
Layia glandulosa
John Thomas Howell
1962-5-21
37247
Kern
West of Walker Pass summit
1584
Comment
GH414645
Layia heterotricha
J. T. Howell
1933-4-23
11156
Unknown
11 miles from Hernandez on road to San Benito Co.
609
Comment
CAS-BOT-BC327238
Layia hieracioides
John Thomas Howell
1944-4-30
19419
Alameda
Oakland Hills above Mills College
Comment
CAS-BOT-BC372299
Layia platyglossa
John Thomas Howell
1944-6-4
19553
Marin
Inverness Ridge west of Inverness
Comment
CAS-BOT-BC379639
Layia platyglossa
John Thomas Howell
1950-4-16
1605
San Francisco
Sunset Beach State Park. Bluffs behind beach. Santa Cruz County
Comment
POM260852
Layia platyglossa subsp. campestris
J. T. Howell
1940-5-19
15458
Napa
Upper St. Helena Creek
Comment
CAS-BOT-BC534338
Lemna gibba
John Thomas Howell
1926-6-11
2001
Merced
Pool, 10 miles sw. of Merced
Comment
CAS-BOT-BC221479
Lepechinia calycina
John Thomas Howell
1955-7-8
30640
Monterey
On Arroyo Seco road near Escondido Camp, Santa Lucia Mts.
792
Comment
RSA1076
Lepechinia cardiophylla
J. T. Howell
1927-6-26
225
Orange
Claymine Canyon, near Sierra Peak
610
Comment
CAS-BOT-BC88937
Lepidium dictyotum
John Thomas Howell
1931-3-17
5790
Kings
6 miles southwest of Stratford. Tulare Lake bottom.
Comment
CAS-BOT-BC89105
Lepidium didymum
John Thomas Howell
1926-7-13
2067
San Francisco
San Francisco. Lone Mountain.
Comment
CAS-BOT-BC89086
Lepidium didymum
John Thomas Howell
1940-5-20
s.n.
Marin
Point Reyes Lighthouse.
Comment
CAS-BOT-BC12559
Lepidium nitidum
John Thomas Howell
1933-3-26
10892
San Joaquin
Corral Hollow.
Comment
CAS-BOT-BC12761
Lepidium oxycarpum
John Thomas Howell
1930-4-4
4652
Alameda
Bordering San Francisco Bay, 4 miles west of Decoto.
Comment
CAS-BOT-BC12794
Lepidium perfoliatum
John Thomas Howell
1944-5-28
19512
Marin
Between Manzanita and Almonte.
Comment
PGM899
Lepidium strictum
J. T. Howell
1971-4-15
Monterey
Monterey Peninsula, Pacific Grove, 19th & Laurel Sts (in pathway)
Comment
CAS-BOT-BC272394
Leptochloa fusca subsp. uninervia
John Thomas Howell; Gordon H. True
1967-7-6
43201
Tulare
Across Road 160 at SW corner near vernal pool natural area in Valley Grassland about 4 1/2 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC272416
Leptochloa fusca subsp. uninervia
John Thomas Howell
1927-9-30
3127
Los Angeles
In bed of Los Angeles River east of Griffith Park
Comment
GH414061
Lessingia germanorum
J. T. Howell
1937-5-20
12958
Unknown
5 miles north of the Pinnacles
Comment
POM197776
Lessingia germanorum
John T. Howell
1926-11-7
2233
San Francisco
Lake Merced
Comment
UC473579
Lessingia germanorum
John Thomas Howell
1931-9-26
8126
San Francisco
Presidio San Francisco
Comment
CAS-BOT-BC339410
Lessingia glandulifera var. glandulifera
John Thomas Howell
1927-7-9
2673
San Bernardino
Between Deadmans Point and Box S Ranch, Mojave Desert
Comment
JEPS20566
Lessingia glandulifera var. glandulifera
John Thomas Howell
1928-10-14
4080
San Bernardino
near Fontana
Comment
JEPS20573
Lessingia glandulifera var. glandulifera
John Thomas Howell
1927-8-2
2909
Riverside
at Idyllwild (Strawberry Valley, Mt. San Jacinto); Mt. San Jacinto, Strawberry Valley
Comment
CAS-BOT-BC339648
Lessingia leptoclada
John Thomas Howell
1971-7-12
48333
Kern
West slope of Greenhorn Range 3 miles east of Glennville
1219
Comment
UCR88022
Lessingia leptoclada
J. T. Howell
1962-9-26
38933
Kern
Sierra Nevada Mtns., 5.5 mi west of Summit on rd to Glennville
1463
Comment
CAS-BOT-BC339667
Lessingia leptoclada
John Thomas Howell
1931-10-10
8127
Mariposa
7 miles from Mariposa on road to Cathay Valley
Comment
RSA91159
Lessingia nemaclada
John T. Howell
1931-10-11
8134
Mariposa
Mormon Bar Hill
Comment
CAS-BOT-BC341954
Lessingia pectinata var. pectinata
John Thomas Howell
1927-8-18
3020
Monterey
About 4 miles east of Monterey on road to Salinas
Comment
JEPS20556
Lessingia pectinata var. pectinata
John Thomas Howell
1927-8-18
3020
Monterey
about 4 mi e Monterey (on road to Salinas)
Comment
CAS-BOT-BC342029
Lessingia ramulosa
John Thomas Howell
1927-8-24
3052
Lake
On Pope Valley-Middleton road, 8 miles ese. of Middleton
Comment
CAS-BOT-BC330397
Lessingia tenuis
John Thomas Howell
1928-5-27
3859
Kern
Near Cuddy's Ranch, Mt. Pinos region
Comment
CAS-BOT-BC342083
Leucanthemum vulgare
John Thomas Howell
1961-6-21
36653
Plumas
Greenville
1097
Comment
CAS-BOT-BC444054
Lewisia cotyledon var. cotyledon
John Thomas Howell
1937-7-24
13438
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
GH376984
Lewisia disepala
J. T. Howell
1940-6-1
15573
Unknown
Between Snow Creek and Mt. Watkins ridge
Comment Read comments Apr 9 2019
CAS-BOT-BC444292
Lewisia pygmaea
John Thomas Howell
1941-7-24
16439
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC444561
Lewisia triphylla
John Thomas Howell
1960-7-21
35815
Plumas
Lassen Volcanic National Park. Near Terminal Geyser
1828
Comment
CAS-BOT-BC444586
Lewisia triphylla
John Thomas Howell
1942-8-3
17616
Tulare
Between Little Five Lakes and Kaweah Gap
Comment
CAS-BOT-BC436553
Ligusticum californicum
John Thomas Howell
1936-8-26
12800
Trinity
Tanble Blue Creek, Scott Mts.
Comment
CAS-BOT-BC436062
Ligusticum grayi
John Thomas Howell
1944-8-8
20109
Tuolumne
Bank of Clavey River, near Forest Service Road 3N21, Stanislaus National Forest
1804
Comment
GH404463
Ligusticum grayi
J. T. Howell
1937-7-25
13461
Unknown
Caribou Basin, Salmon-Trinity Alps
1981
Comment
CAS-BOT-BC451679
Lilaea scilloides
John Thomas Howell
1930-5-21
5194
Santa Clara
1 mile south of Morgan Hill
Comment
CAS-BOT-BC130582
Lilium humboldtii
John Thomas Howell
1927-7-26
2841
Orange
SE. fork of Claymine [Canon] Canyon, n. Santa Ana Mts.
304
Comment Read comments Mar 27 2018
CAS-BOT-BC509305
Lilium kelleyanum
John Thomas Howell
1941-8-3
16740
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC509390
Lilium kelleyanum
John Thomas Howell
1937-7-20
13148
Trinity
Van Ness Creek
Comment
CAS-BOT-BC509426
Lilium kelleyanum
John Thomas Howell
1958-7-22
33758
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC509457
Lilium kelleyanum
John Thomas Howell
1940-8-5
16007
Tulare
Between East Lake and Reflection Lake
Comment
UC1106309
Limnanthes douglasii
John Thomas Howell
1946-4-18
21677
Marin
Novato
Comment
CAS-BOT-BC246058
Limosella aquatica
John Thomas Howell
1930-5-21
5196
Santa Clara
1 mile south of Morgan Hill
Comment
CAS-BOT-BC198040
Linanthus harknessii
John Thomas Howell
1934-6-12
12031
Modoc
Plum Valley.
Comment
CAS-BOT-BC425337
Lithophragma affine
John Thomas Howell
1935-4-11
12595
Alameda
Brushy Canyon near Tesla
Comment
CAS-BOT-BC430955
Lithophragma bolanderi
John Thomas Howell
1954-5-16
29595
El Dorado
4 miles west of Shingle Springs
Comment
CAS-BOT-BC431106
Lithophragma bolanderi
John Thomas Howell
1951-7-19
27971
Tulare
Monarch Lakes Trail
2590
Comment
CAS-BOT-BC432307
Lithophragma campanulatum
John Thomas Howell
1944-7-13
19729
Glenn
Plaskett Meadows
Comment
CAS-BOT-BC174455
Loeflingia squarrosa
John Thomas Howell
1931-3-18
5814
Fresno
Jocalitos Canyon, 4 miles s. of Coalinga
Comment
CAS-BOT-BC174515
Loeflingia squarrosa
John Thomas Howell
1958-4-27
33017
San Benito
5 miles n. of Pinnacles
Comment
SD71340
Loeflingia squarrosa
John Thomas Howell
1958-4-27
33017
San Benito
5.0 miles north of Pinnacles.
Comment
CAS-BOT-BC342210
Logfia filaginoides
John Thomas Howell
1943-4-11
17899
Marin
Black Canyon, San Rafael hills
Comment
CAS-BOT-BC342208
Logfia filaginoides
John Thomas Howell
1965-4-26
41228
Madera
4.7 miles south of Northfork
609
Comment
CAS-BOT-BC342393
Logfia gallica
John Thomas Howell
1965-4-25
41048
Madera
1.5 mile north-west of Madera
82
Comment
CAS-BOT-BC283305
Lolium multiflorum
John Thomas Howell; Gordon H. True
1967-5-31
42535
Tulare
About 4.5 miles ENE of Pixley, from SW corner of area
83
Comment
CAS-BOT-BC283390
Lolium multiflorum
John Thomas Howell
1961-9-22
36714 A
Butte
On bank of Feather River, Oroville
53
Comment
CAS-BOT-BC283472
Lolium multiflorum
John Thomas Howell
1963-5-18
39325
Monterey
2.5 miles S of Aromas
60
Comment
UC640624
Lomatium engelmannii
John Thomas Howell
1937-7-29
13656
Siskiyou
between Trinity & Siskiyou co.'s Scott Mt.
Comment
SD130534
Lonicera conjugialis
John Thomas Howell
1958-8-14
34433
Madera
East Fork of Granite Creek; north of Sadler Lake.
3050
Comment
CAS-BOT-BC240695
Lonicera interrupta
John Thomas Howell
1961-9-22
36780
Butte
Jarbo Gap, Feather River Highway
Comment
GH422935
Lonicera interrupta
J. T. Howell & G. H. True
1966-7-13
41880
Unknown
Canyon of Poison Meadow Creek on Cherry Hill Road. Kern Plateau
2011
Comment
CAS-BOT-BC234815
Lonicera subspicata
John Thomas Howell
1927-10-16
3157
Los Angeles
On trail from Santa Anita Canon [Canyon] to Sierra Madre, San Gabriel Mts.
Comment
CAS-BOT-BC448348
Lorandersonia peirsonii
John Thomas Howell
1946-7-28
22814
Inyo
Rock Creek Lake Basin, Long Lake
3230
Comment
CAS-BOT-BC198560
Lotus
John Thomas Howell
1928-3-11
s.n.
San Bernardino
At eastern end of Morongo Valley.
914
Comment
RSA118041
Lotus grandiflorus var. grandiflorus
J. T. Howell
1955-7-7
30432
Monterey
Granitic summit of Junipero Serra Peak., Santa Lucia Mts.
1768
Comment
UC1177191
Lotus humistratus
John Thomas Howell
1944-5-28
19513
Marin
between Manzanita and Almonte
Comment
UC517492
Lotus procumbens var. procumbens
John Thomas Howell
1933-6-29
11407
San Bernardino
Summit of Cajon Pass
Comment
CAS-BOT-BC181941
Lotus purshianus var. purshianus
John Thomas Howell
1934-6-30
12295
Modoc
Duncan Horse Camp.
1355
Comment
UCD106704
Lotus uliginosus
John Thomas Howell
1944-7-30
19856
Marin
Between Mill Valley and head of salt marshes.
3
Comment
UC1177185
Lotus wrangelianus
John Thomas Howell
1940-5-12
Marin
San Anselmo Canyon
Comment
GH404271
Lupinus
J. T. Howell
1976-4-1
51520
Unknown
Table Mountain, 4-5 miles north of Oroville
152
Comment
CAS-BOT-BC208751
Lupinus argenteus var. heteranthus
John Thomas Howell
1934-7-10
12560
Lassen
Black's Mt.
Comment
CAS-BOT-BC215092
Lupinus chamissonis
John Thomas Howell
1957-5-28
32479
San Francisco
W side of Lone Mountain
Comment
CAS-BOT-BC205431
Lupinus excubitus var. austromontanus
John Thomas Howell; Gordon H. True
1968-5-14
44445
Tulare
Cherry Hill Road, Brush Creek Canyon, Kern Plateau
1310
Comment
UC1177228
Lupinus formosus
John Thomas Howell
1939-5-21
14703
Marin
e side Tiburon Peninsula; e side of Tiburon Peninsula
Comment
UC517560
Lupinus formosus
John Thomas Howell
1928-3-20
3473
Los Angeles
Griffith Park Los Angeles, , Vermont Canyon (Vermont Canyon, Los Angeles)
Comment
RSA595066
Lupinus fulcratus var. fulcratus
J. T. Howell
1958-8-16
34484
Madera
On trail to Sadler Lake, near Isberg Lake.
2866
Comment
GH369029
Lupinus gracilentus
J. T. Howell
1944-8-14
20453
Unknown
Tuolumne Canyon above Glen Aulin
Comment
RSA410
Lupinus latifolius subsp. parishii
J. T. Howell
1927-7-10
375
San Bernardino
Big Bear, San Bernardino Mountains.
1829
Comment
UCD108579
Lupinus lepidus var. sellulus
John Thomas Howell
1961-6-19
36547
Shasta
Lassen Volcanic National Park. Anklin Meadows.
1874
Comment
SEINET8128161
Lupinus lyallii var. danaus
J. T. Howell
1941-1
16421
Unknown
Comment
CAS-BOT-BC8365
Lupinus marinensis
John Thomas Howell
1938-5-22
13787
Marin
San Anselmo Canyon
Comment
CAS-BOT-BC8216
Lupinus oreocharis
John Thomas Howell
1942-7-29
17392
Tulare
Little Five Lakes Basin
Comment
RSA414238
Lupinus pratensis
J. T. Howell
1948-7-30
25195
Tulare
John Muir Trail west of Center Peak
3201
Comment
SEINET10488906
Lupinus sellulus
John Thomas Howell
1963-7-11
Howell 39830
Nevada
In gravelly soil near truckee.
Comment
SD147556
Lupinus spectabilis
John Thomas Howell
1954-5-19
29888
Mariposa
Serpentine 5 miles northwest of Bagby
Comment
SD147555
Lupinus stiversii
John Thomas Howell
1960-6-6
35331
Fresno
Kings Canyon, Copper Creek Trail
1676
Comment
CAS-BOT-BC7533
Lupinus tegeticulatus
John Thomas Howell
1928-5-26
3850
Ventura
Mt. Pinos
2682
Comment
CAS-BOT-BC436565
Luzula cascadensis
John Thomas Howell
1948-7-22
24858
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
RSA40227
Luzula comosa
J. T. Howell
1943-8-3
18983
Glenn
Plaskett Meadows.
1829
Comment
CAS-BOT-BC436674
Luzula comosa var. laxa
John Thomas Howell
1960-7-20
35739
Plumas
Lassen Volcanic National Park: Boiling Springs Lake to Drakesbad
1828
Comment
CAS-BOT-BC236930
Luzula orestera
John Thomas Howell
1940-8-1
15839
Tulare
Between Reflection Lake and Harrison Pass
3505
Comment
CAS-BOT-BC231490
Lycium brevipes var. hassei
John Thomas Howell
1927-11-25
3210
San Diego
Central part of Borrego Valley, w. Colorado Desert
182
Comment
RSA656
Lycopus americanus
J. T. Howell
1927-9-24
753
Orange
Santa Ana River Bottom, Rancho Santa Ana
152
Comment
CAS-BOT-BC342631
Madia anomala
John Thomas Howell
1943-5-22
18136
Marin
Fairfax hills
Comment
UC750717
Madia anomala
John Thomas Howell
1946-5-25
21932
Marin
Greenbrae Hills
Comment
CAS-BOT-BC344116
Madia elegans
John Thomas Howell
1950-7-13
26762
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC344175
Madia elegans
John Thomas Howell; Gordon H. True
1967-7-4
42999
Tulare
3.4 miles south of Troy Meadow, Kern Plateau
2286
Comment
CAS-BOT-BC343766
Madia elegans
John Thomas Howell
1930-9-14
5481
Mendocino
9 miles west of Boonville
Comment
CAS-BOT-BC344158
Madia elegans
John Thomas Howell; R. C. Barneby
1954-5-8
29225
Tulare
Tule River Canyon, 11.5 miles above Springville
792
Comment
RSA40194
Madia elegans subsp. elegans
J. T. Howell
1943-8-7
s.n.
Glenn
Plaskett Meadows.
1829
Comment
CAS-BOT-BC343176
Madia gracilis
John Thomas Howell
1963-5-6
39086
Monterey
Santa Lucia Mountains. 4 miles south of King City on road to Jolon
121
Comment
CAS-BOT-BC343237
Madia gracilis
John Thomas Howell
1943-7-15
18362
Nevada
Boreal Ridge, West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC334723
Madia gracilis
John Thomas Howell
1930-5-21
5188
San Benito
North slope of San Juan Grade
Comment
CAS-BOT-BC324522
Madia radiata
John Thomas Howell
1938-4-10
13753
San Joaquin
Hospital Canyon
Comment
CAS-BOT-BC324496
Madia radiata
John Thomas Howell
1931-3-18
5855
Fresno
Head of Oil Canyon
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-BC511338
Maianthemum racemosum subsp. amplexicaule
John Thomas Howell
1956-3-27
31242 A
Monterey
Santa Lucia Mountains, Bixby Creek Canyon
Comment
CAS-BOT-BC514209
Maianthemum stellatum
John Thomas Howell
1942-7-26
17235
Tulare
Mineral King
Comment
CAS-BOT-BC203998
Malacothamnus fremontii
John Thomas Howell; Thos. H. Kearney
1950-8-29
27434 a
Inyo
Along road from Independence to Onion Valley
2590
Comment
CAS-BOT-BC204045
Malacothamnus fremontii
John Thomas Howell
1957-5-19
32355
Stanislaus
Del Puerto Canyon
Comment
CAS-BOT-BC206331
Malacothamnus fremontii
John Thomas Howell; T. H. Kearney
1950-7-5
26635
Contra Costa
Nortonville.
Comment
UC1177002
Malacothamnus fremontii
John Thomas Howell
1953-4-26
28932
San Joaquin
Corral Hollow
Comment
UC961415
Malacothamnus fremontii
John Thomas Howell and T. H. Kearney
1950-7-5
26635
Contra Costa
Nortonville
Comment
UC961416
Malacothamnus marrubioides
John Thomas Howell
1950-11-9
27485
Los Angeles
12 mi n Castaic
609
Comment
CAS-BOT-BC323287
Malacothrix
John Thomas Howell
1928-5-19
3795
Ventura
Anacapa Island
Comment
CAS-BOT-BC345302
Malacothrix californica
John Thomas Howell
1962-5-20
37101
Kern
Kernville
807
Comment
CAS-BOT-BC345403
Malacothrix clevelandii
John Thomas Howell
1962-7-8
s.n.
Kern
Black Mt. south side, Greenhorn Mountains
1417
Comment
CAS-BOT-BC345438
Malacothrix clevelandii
John Thomas Howell
1953-6-14
29071
Monterey
Hastings Reservation, Santa Lucia Mts.
Comment
CAS-BOT-BC347526
Malacothrix floccifera
John Thomas Howell; Walter Knight; Irja Knight; Gordon True
1967-6-12
1977
Plumas
Butterfly Botanical Area and Vicinity. In valley proper
1036
Comment
CAS-BOT-BC347835
Malacothrix saxatilis var. commutata
John Thomas Howell
1930-10-24
5640
Monterey
17.2 miles east of The Indians, Santa Lucia Mts.
Comment
CAS-BOT-BC347914
Malacothrix saxatilis var. tenuifolia
John Thomas Howell
1931-6-6
6667 A
Los Angeles
17 miles s. of Sandberg's Summit, Ridge Route
Comment
CAS-BOT-BC540140
Malus pumila
John Thomas Howell
1950-11-4
35106
Marin
Single roadside seedling, Frank Valley
Comment
CAS-BOT-BC348188
Matricaria discoidea
John Thomas Howell
1957-5-17
32246
San Francisco
San Francisco. Bayview Hills
Comment
RSA96894
Medicago praecox
J. T. Howell
29188
Tehama
Dibble Creek, 1.5 miles north of Red Bluff.
Comment
RSA398
Medicago sativa
J. T. Howell
1927-7-27
498
Orange
Near ranch, Rancho Santa Ana
152
Comment
CAS-BOT-BC269223
Melica aristata
John Thomas Howell
1960-7-17
35486
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC271170
Melica aristata
John Thomas Howell
1943-8-5
19094
Glenn
Canyon of Snow Basin Creek
Comment
CAS-BOT-BC271731
Melica californica
John Thomas Howell; Gordon H. True
1969-5-14
45768
Tulare
On wall of Kern River Canyon east of Limestone Forest Service camp, Kern Plateau, Sierra Nevada
1127
Comment
CAS-BOT-BC282089
Melica fugax
John Thomas Howell; et al.
1967-6-12
1953
Plumas
Butterfly Botanical Botanical Area and Vicinity. Fern Glen
1097
Comment
CAS-BOT-BC282163
Melica geyeri
John Thomas Howell
1940-5-19
15448
Napa
Upper St Helena Creek
Comment
UC1106141
Melica geyeri
John Thomas Howell
1941-5-25
16227
Marin
Potrero Meadow; Mt. Tamalpais
Comment
CAS-BOT-BC280910
Melica imperfecta
John Thomas Howell
1931-4-12
6285
Santa Barbara
Cochie Canyon, Santa Cruz Island
Comment
CAS-BOT-BC280942
Melica imperfecta
John Thomas Howell
1962-5-22
37267
Tulare
Kern River Canyon, above Roads End
1097
Comment
CAS-BOT-BC281542
Melica imperfecta
John Thomas Howell
1972-4-24
48694
Mariposa
El Portal
640
Comment
CAS-BOT-BC281062
Melica stricta
John Thomas Howell
1958-5-24
33296
Inyo
Whitney Portal Rd
2255
Comment
GH360402
Melica stricta
J. T. Howell
1943-7-18
18527
Unknown
Castle Peak
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-BC262513
Melica torreyana
John Thomas Howell
1943-5-11
18053
Lake
2.9 miles north of Middletown
Comment
CAS-BOT-BC262550
Melica torreyana
John Thomas Howell; Catherine Best; Gordon H. True
1982-5-6
54695
Sonoma
Bouverie Audubon Preserve, about 1.5 miles east of Glen Ellen near Stuart Creek
137
Comment
RSA0121878
Mentzelia dispersa
J. T. Howell
1934-6-12
12042
Modoc
North side of Fandango Valley.
Comment
CAS-BOT-BC167676
Mentzelia veatchiana
John Thomas Howell; Gordon H. True
1967-5-30
42466
Tulare
About 1.5 miles from Lamont Meadow on road to Long Valley, Kern Plateau
1737
Comment
CAS-BOT-BC170876
Mentzelia veatchiana
John Thomas Howell
1962-5-20
37109
Kern
Kernville - Sierra Nevada
807
Comment
CAS-BOT-BC428773
Micranthes californica
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52770
Calaveras
Camp Nine Road northeast of Vallecito.
609
Comment
CAS-BOT-BC428995
Micranthes fragosa
John Thomas Howell
1944-7-13
19748
Glenn
Summit ridge north of Black Butte
Comment
CAS-BOT-BC429063
Micranthes nidifica
John Thomas Howell
1942-8-5
17726
Tulare
Kaweah Meadows, Chagoopa Plateau
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-BC429189
Micranthes oregana
John Thomas Howell
1934-6-14
12141
Modoc
Near Lost Lake, Warner Mts.
2438
Comment
CAS-BOT-BC322601
Micropus amphibolus
John Thomas Howell
1946-5-16
21871
Marin
S. side, Angel Island
Comment
CAS-BOT-BC348703
Microseris acuminata
John Thomas Howell; Gordon H. True
1967-5-7
42172
Butte
Northwest outskirts of Oroville north of the Feather River
Comment
CAS-BOT-BC348775
Microseris bigelovii
John Thomas Howell
1957-5-28
32511
San Francisco
San Francisco. Nw. side of Lone Mt.
Comment
CAS-BOT-BC348758
Microseris bigelovii
John Thomas Howell
1929-5-26
4243
Mendocino
Open flats of Mendocino coastal plain, Fort Bragg
15
Comment
CAS-BOT-BC348839
Microseris douglasii subsp. douglasii
John Thomas Howell
1943-5-11
18014
Lake
1 mile south of Lakeport
Comment
CAS-BOT-BC349203
Microseris elegans
John Thomas Howell
1966-3-29
41456
Tulare
About 4 1/2 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC9736
Mimulus deflexus
John Thomas Howell
1949-7-18
25465
Inyo
Cottonwood Lakes
3352
Comment
POM204109
Mimulus layneae
J. T. Howell
1934-7-4
12398
Siskiyou
SE corner of Siskiyou County
Comment
JEPS48078
Mimulus leptaleus
John Thomas Howell
1963-7-12
39841
El Dorado
Myers
1935
Comment
RSA88391
Mimulus nanus var. mephiticus
J. T. Howell
1951-6-29
27753
Plumas
Feather River Canyon
549
Comment
CAS-BOT-BC10851
Mimulus suksdorfii
John Thomas Howell
1949-7-18
25468
Inyo
Cottonwood Lakes
3383
Comment
CAS-BOT-BC174544
Minuartia californica
John Thomas Howell
1960-6-7
35418
Fresno
Kings Canyon road 6.5 mi. ne. of Cherry Gap
1554
Comment
RSA54056
Minuartia californica
J. T. Howell
1948-4-18
24207
Sonoma
Hills east of Agua Caliente.
Comment
CAS-BOT-BC384006
Mirabilis jalapa
John Thomas Howell
1973-11-4
50322
Monterey
King City
100
Comment
CAS-BOT-BC432966
Mitella breweri
John Thomas Howell
1924-7-28
527
Mariposa
Johnson Lake, Yosemite Park
Comment
UCD99640
Mollugo verticillata
John Thomas Howell
1970-9-22
47459
Kern
bed of Lake Isabella (east side of north arm), about 5 miles south of Kernville.
792
Comment
CAS-BOT-BC213929
Monardella odoratissima subsp. pallida
John Thomas Howell
1970-9-23
47344
Kern
Near Tiger Flat, east side of Sunday Peak, Greenhorn Mountains, Sierra Nevada
1981
Comment
CAS-BOT-BC222145
Monardella odoratissima subsp. pallida
John Thomas Howell
1946-7-14
22291
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
RSA401649B
Monardella odoratissima subsp. pallida
J. T. Howell
1948-7-31
25244
Inyo
Kearsarge Pass Trail.
2896
Comment
CAS-BOT-BC220395
Monardella purpurea
John Thomas Howell
1939-7-16
s.n.
Marin
Fern Canyon, Mt. Tamalpais
Comment
CAS-BOT-BC444773
Montia chamissoi
John Thomas Howell
1942-8-5
17744 A
Tulare
Kaweah Meadows
Comment
CAS-BOT-BC444918
Montia fontana
John Thomas Howell
1924-5-13
317
Mariposa
Wawona Meadow
1219
Comment
CAS-BOT-BC415958
Mucronea perfoliata
John Thomas Howell
1927-11-12
3195
Kern
badlands north of Red Rock Canon
762
Comment
CAS-BOT-BC263347
Muhlenbergia andina
John Thomas Howell; Gordon H. True
1966-7-13
41942
Tulare
Pipe Spring on Cherry Hill Road, west side of Big Meadow, Kern Plateau, Sierra Nevada
2377
Comment
CAS-BOT-BC260591
Muhlenbergia filiformis
John Thomas Howell
1970-9-22
47241
Kern
Along Kern River between Kernville and River Kern
822
Comment
CAS-BOT-BC264552
Muhlenbergia filiformis
John Thomas Howell
1949-8-3
25978
Tulare
Sky Blue Lake
3505
Comment
CAS-BOT-BC275301
Muhlenbergia mexicana
John Thomas Howell
1959-9-21
34746
Plumas
Sand bars of Feather River, N Fork near Belden
701
Comment
CAS-BOT-BC274952
Muhlenbergia richardsonis
John Thomas Howell
1940-7-31
15758
Tulare
East Lake
2926
Comment
CAS-BOT-BC274977
Muhlenbergia richardsonis
John Thomas Howell
1949-7-27
25817
Tulare
Whitney Meadows
2956
Comment
CAS-BOT-BC275003
Muhlenbergia richardsonis
John Thomas Howell
1949-7-29
25890
Tulare
Little Whitney Meadow
2590
Comment
CAS-BOT-BC275083
Muhlenbergia richardsonis
John Thomas Howell
1934-7-6
12449
Lassen
Harvey Valley
Comment
CAS-BOT-BC275091
Muhlenbergia richardsonis
John Thomas Howell
1941-8-1
16647
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC392248
Myosurus
John Thomas Howell
1978-4-17
s.n.
Butte
Table Mountain
381
Comment
CAS-BOT-BC83226
Myosurus minimus
John Thomas Howell; Gordon H. True
1972-5-12
7130
Nevada
Boca-Stampede Dam Road, 5.2 miles north of Boca.
1767
Comment
UC1026499
Myosurus sessilis
John Thomas Howell
1931-3-29
66014
San Benito
1.5 mi se San Benito
Comment
UCD87432
Nassella cernua
John Thomas Howell
1930-5-11
4827
San Diego
Henshaw Dam.
Comment
CAS-BOT-BC259933
Nassella lepida
John Thomas Howell
1945-5-27
20881
Marin
E of Mountain Theater, Mount Tamalpais
Comment
CAS-BOT-BC259942
Nassella lepida
John Thomas Howell
1946-5-16
21896
Marin
N side of Angel Island
Comment
RSA70
Nassella lepida
J. T. Howell
1927-6-9
65
Orange
Botany Garden, Rancho Santa Ana.
152
Comment
CAS-BOT-BC260149
Nassella pulchra
John Thomas Howell
1941-5-25
16211
Marin
Rifle Camp, Mount Tamalpais
Comment
CAS-BOT-BC260166
Nassella pulchra
John Thomas Howell
1938-5-22
13794
Marin
San Anselmo Canyon
Comment
POM203918
Nassella pulchra
J. T. Howell
1933-5-28
11378
Alameda
Little Grizzley, Berkeley Hills
Comment
CAS-BOT-BC60339
Nasturtium officinale
John Thomas Howell
1924-6-14
408
Mariposa
Stream in Wawona Meadow.
Comment
GH385263
Navarretia cotulifolia
J. T. Howell
1937-7-18
13107
Unknown
near Middletown
Comment
RSA73730
Navarretia cotulifolia
J. T. Howell
1939-4-30
14626
Napa
Walter Springs.
Comment
RSA99648
Navarretia eriocephala
J. T. Howell
1953-5-24
s.n.
Tuolumne
Near Chinese Camp.
381
Comment
CAS-BOT-BC230320
Navarretia jepsonii
John Thomas Howell
1937-7-18
13106
Lake
Near Middletown
Comment
SEINET12271290
Navarretia mellita
J. T. Howell
1938-1
13938
Contra Costa
head of Siesta Valley
Comment
RSA73126
Navarretia nigelliformis subsp. radians
J. T. Howell
1937-5-20
12962
San Benito
12 miles south of Paicines
Comment
CAS-BOT-BC232654
Navarretia pubescens
John Thomas Howell
1930-8-24
5440
Lake
4 miles from Middletown on Adams Spring Road
Comment
RSA26221
Navarretia subuligera
J. T. Howell
1940-5-19
15462
Napa
Upper St. Helena Creek.
Comment
SEINET10906128
Nemacladus interior
John Thomas Howell, Rupert C. Barneby
1954-5-11
Howell 29415
Madera
Burn, 2 miles west of Oakhurst
671
Comment
RSA615
Nemophila menziesii
J. T. Howell
1928-3-18
881
San Bernardino
Aliso Canyon, Rancho Santa Ana.
244
Comment
CAS-BOT-BC219398
Nemophila parviflora
John Thomas Howell
1944-7-13
19733
Glenn
Plaskett Meadows
Comment
CAS-BOT-BC140357
Oemleria cerasiformis
John Thomas Howell
1925-2-8
745
Alameda
Strawberry [Canon] Canyon, Berkeley Hills
Comment
CAS-BOT-BC56884
Opuntia polyacantha
John Thomas Howell
1947-8-16
24162
Inyo
Field redacted by CAS, contact the data manager for more information
2743
Comment
CAS-BOT-BC349972
Oreostemma alpigenum var. andersonii
John Thomas Howell
1958-8-13
34390
Madera
Near Isberg Lake
2987
Comment
CAS-BOT-BC355618
Oreostemma alpigenum var. andersonii
John Thomas Howell; Gordon H. True
1970-7-28
47001
Tulare
West side of Big Meadow just south of Pipe Spring. Kern Plateau
2377
Comment
CAS-BOT-BC355636
Oreostemma alpigenum var. andersonii
John Thomas Howell
1951-7-21
28075
Tulare
Mineral King and Vicinity. White Chief region
3048
Comment
CAS-BOT-BC499867
Orobanche fasciculata
John Thomas Howell
1958-5-28
33569
Inyo
Sierra Nevada: Bishop Creek
1828
Comment
CAS-BOT-BC500208
Orobanche fasciculata
John Thomas Howell
1950-7-13
26759
Tulare
Sierra Nevada: Bakeover Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC355695
Orochaenactis thysanocarpha
John Thomas Howell
1950-7-21
27145
Tulare
Monache Meadows near Soda Creek
2438
Comment
CAS-BOT-BC355728
Orochaenactis thysanocarpha
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-16
53835
Tulare
Sherman Pass Road 2.5 miles northeast of the pass, in Trout Creek drainage, Kern Plateau
2560
Comment
RSA78603
Orthocarpus cuspidatus subsp. copelandii
J. T. Howell
1944-7-13
19752
Glenn
Summit ridge north of Black Butte
Comment
RSA80296
Orthocarpus faucibarbatus
J. T. Howell
1930-4-20
4719
Marin
1 mile east of Lagunitas.
Comment
RSA88374
Oxalis laxa
J. T. Howell
1953-5-22
28972
Stanislaus
Knight's Ferry, Sierra Nevada
61
Comment
CAS-BOT-BC413190
Oxyria digyna
John Thomas Howell
1946-7-26
22762
Inyo
Mono Mesa
3657
Comment
CAS-BOT-BC413348
Oxytheca perfoliata
John Thomas Howell
1927-6-12
2531
San Bernardino
Half way between Victorville and Hesperia, Mojave Desert
822
Comment
RSA192
Oxytheca trilobata
J. T. Howell
1927-8-2
563
Riverside
Idyllwild, near Strawberry Valley. San Jacinto Mts.
Comment
CAS-BOT-BC202201
Oxytropis oreophila
John Thomas Howell
1947-7-25
23668
San Bernardino
Mt. San Gorgonio, San Bernardino Mts.
3505
Comment
CAS-BOT-BC50277
Packera eurycephala var. eurycephala
John Thomas Howell
1934-6-11
11915 A
Modoc
Parker Creek.
1584
Comment
CAS-BOT-BC317119
Packera pseudaurea var. pseudaurea
John Thomas Howell
1940-7-31
15763
Tulare
East Lake.
2895
Comment
CAS-BOT-BC253740
Panicum capillare
John Thomas Howell
1966-7-29
42013
Plumas
Quincy
1036
Comment
RSA201355
Panicum capillare
J. T. Howell
1960-7-20
35728
Plumas
Drakesbad; Lasses Volcanic National Park
1677
Comment
CAS-BOT-BC274090
Pappostipa speciosa
John Thomas Howell
1960-6-6
35343
Fresno
Copper Creek Trail, Kings Canyon
1676
Comment
CAS-BOT-BC253945
Parapholis incurva
John Thomas Howell
1945-5-6
20816
Marin
Just above high tide, San Rafael
Comment
CAS-BOT-BC413403
Parietaria hespera var. hespera
John Thomas Howell
1932-3-13
8228
Ventura
San Nicolas Island
Comment
CAS-BOT-BC413416
Parietaria hespera var. hespera
John Thomas Howell
1928-4-18
3728
Los Angeles
N. side of Griffith Park, Los Angeles
Comment
GH37783
Paronychia ahartii
J. T. Howell
1955-6-12
30307
Unknown
8.5 miles south of Corning
Comment
UC692353
Parvisedum pentandrum
J. T. Howell
16970
Contra Costa
ne of Deer Flat (Mount Diablo); Mount Diablo
609
Comment
CAS-BOT-BC259664
Paspalum dilatatum
John Thomas Howell
1945-8-5
21364
Marin
McKinnon's Landing near Stinson Beach
Comment
CAS-BOT-BC259715
Paspalum distichum
John Thomas Howell
1973-7-25
49997
Merced
Just N of Ingomar on Cottonwood Road to Gustine
30
Comment
CAS-BOT-BC71331
Pellaea mucronata
John Thomas Howell
1945-6-21
21162
Lake
Sawmill Flat to Ruppert Ridge, Bartlett Mountain
Comment
CAS-BOT-BC67575
Pellaea mucronata var. californica
John Thomas Howell
1967-6-22
42660
Plumas
Sierra Nevada - Canyon of the Feather River North Fork, granite near mouth of Chambers Creek.
609
Comment
NY571180
Penstemon azureus var. azureus
J. T. Howell
1958-8-17
34568
Madera
Sierra Nevada; The Niche, East Fork of Granite Creek
2438.4
Comment
JEPS28120
Penstemon caesius
John Thomas Howell
1962-7-11
38581
Kern
n slope of Black Mt. Sierra Nevada, Greenhorn Mountains, Black Mt.
2133
Comment
NY593763
Penstemon filiformis
J. T. Howell
1937-7-28
13597
Trinity
Trinity River Canyon near Eagle Creek
Comment
CAS-BOT-BC265507
Penstemon heterodoxus
John Thomas Howell; Gordon H. True
1971-7-14
48501
Tulare
Round Meadow, about 3 miles NW of Sirretta Peak, Kern Plateau
2621
Comment
CAS-BOT-BC239113
Penstemon incertus
John Thomas Howell; Gordon H. True
1967-7-3
42744
Inyo
Near head of Nine Mile [Ninemile] Canyon
1828
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
CAS-BOT-BC239498
Penstemon rydbergii var. oreocharis
John Thomas Howell
1976-7-20
s.n.
Lassen
Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass
1432
Comment
RSA0076303
Pentagramma glanduloviscida
J. T. Howell
1927-8-7
608
San Diego
Between Cottonwood Creek and Potrero.
457
Comment
CAS-BOT-BC77080
Pentagramma triangularis subsp. triangularis
John Thomas Howell
1959-9-26
35091
Butte
Sierra Nevada - Pulga Bridge, N. Fk. Feather River
411
Comment
CAS-BOT-BC222726
Perideridia gairdneri subsp. gairdneri
John Thomas Howell
1947-6-18
23272
Marin
3 miles east of Tomales
Comment
UC421623
Perityle emoryi
John Thomas Howell
1928-3-24
3515
San Diego
near Palm Wash; w Colorado Desert
Comment
CAS-BOT-BC419148
Persicaria maculosa
John Thomas Howell
1963-5-18
39357
Monterey
Near Aromas
Comment
CAS-BOT-BC419182
Persicaria maculosa
John Thomas Howell
1959-9-20
34617
Butte
Eastern outskirts of Oroville
60
Comment
CAS-BOT-BC419206
Persicaria maculosa
John Thomas Howell
1970-9-25
47412
Kern
Kernville
807
Comment
CAS-BOT-BC167797
Petalonyx thurberi
John Thomas Howell
1927-8-1
2896
San Bernardino
Between Morongo Valley and Warren's Well, s. Mojave Desert
914
Comment
RSA689
Petunia parviflora
J. T. Howell
1927-7-18
426
Orange
Santa Ana River bottom, Rancho Santa Ana.
152
Comment
CAS-BOT-BC326772
Peucephyllum schottii
John Thomas Howell
1928-3-24
3532
Riverside
Painted Canyon, Colorado Desert
Comment
CAS-BOT-BC6691
Phacelia affinis var. patens
John Thomas Howell
1928-6-19
4037
Inyo
Panamint Mts., near summit of ridge dividing Surprise and Hall Canyons
2590
Comment
RSA26586
Phacelia ambigua
J. T. Howell
1928-3-24
3504
Riverside
Near Palm Wash, 35 miles S of Indio and 5 miles W of Hwy Crumbly clay soil.
Comment
RSA112680
Phacelia cicutaria var. cicutaria
J. T. Howell
1929-4-14
4158
Mariposa
Hills east of Merced Falls.
Comment
RSA112684
Phacelia distans
J. T. Howell
1928-5-19
3801
Ventura
Anacapa Islands.
Comment
UC702990
Phacelia distans
John Thomas Howell
1928-6-10
3888
Los Angeles
Fish Canyon San Gabriel Mts.
Comment
SEINET3121758
Phacelia distans
John Thomas Howell, Alice Eastwood
1938-6-14
5939
San Luis Obispo
Serrano Canyon
Comment
SBBG41433
Phacelia egena
J. T. Howell
1929-4-21
4187
Mariposa
5 mi from Mt Bullion on rd to Cathay Valley
Comment
CDA40377
Phacelia egena
J. T. Howell
1929-4-21
4190
Mariposa
4 miles from Mt. Bullion on road to Cathay Valley.
0
Comment
UCD120498
Phacelia hastata subsp. compacta
John Thomas Howell
1948-8-1
25279
Mono
3 miles south of Crestview, Sierra Nevada.
Comment
CAS-BOT-BC180013
Phacelia heterophylla subsp. virgata
John Thomas Howell
1934-6-11
11911
Modoc
Parker Creek.
1584
Comment
SBBG64997
Phacelia insularis var. continentis
J. T. Howell
1930-4-20
4732
Marin
Point Reyes
Comment
CAS-BOT-BC145044
Phacelia keckii
John Thomas Howell
1931-5-30
6611
Riverside
Santiago Peak, Santa Ana Mts.
1219
Comment
CAS-BOT-BC145107
Phacelia mohavensis
John Thomas Howell; Gordon H. True
1969-10-1
46456
Tulare
South of Taylor Meadow on road to Raylor Creek crossing
2225
Comment
CAS-BOT-BC140998
Phacelia novenmillensis
John Thomas Howell; Gordon H. True
1967-5-29
42335
Tulare
Kern Plateau. Midway between Chimney and Lamont Meadows
1889
Comment
CAS-BOT-BC140951
Phacelia orogenes
John Thomas Howell; Gordon H. True
1967-7-5
43184
Tulare
2.8 milesnorth of South Fork Kern River bridge on road to Troy Meadow. Kern Plateau.
2194
Comment
RSA597
Phacelia parryi
J. T. Howell
1928-6-29
1000
Los Angeles
Seminole Hot Springs Road, Santa Monica Mountains
457
Comment
RSA26561
Phacelia ramosissima var. austrolitoralis
J. T. Howell
1927-8-16
2991
Santa Barbara
Gaviota Pass
46
Comment
RSA201495
Phacelia suaveolens subsp. suaveolens
J. T. Howell
1946-5-14
21842
Marin
Potrero Meadow, Mt. Tamalpais.
Comment
UC699662
Phacelia suaveolens var. keckii
John Thomas Howell
1931-5-30
6611
Riverside
Santiago Peak Santa Ana Mts. (type locality)
1219
Comment
CAS-BOT-BC265774
Phalaris aquatica
John Thomas Howell
1939-7-18
s.n.
Marin
East side Bolinas Bay
Comment
CAS-BOT-BC258964
Phalaris californica
John Thomas Howell
1937-7-31
13718
Humboldt
Between Redwood Creek and Korbel
Comment
CAS-BOT-BC265873
Phalaris canariensis
John Thomas Howell
1956-7-15
31691
San Francisco
Waterfront Street near Mission Rock Terminal, San Francisco
Comment
CAS-BOT-BC265919
Phalaris lemmonii
John Thomas Howell; Gordon H. True
1967-5-31
42516
Tulare
About 4 1/2 miles east-northweast of Pixley
83
Comment
CAS-BOT-BC250632
Phalaris minor
John Thomas Howell
1957-8-19
32907
San Francisco
San Francisco. Near Quarry Lake, Golden Gate Park
Comment
CAS-BOT-BC253526
Phalaris paradoxa
John Thomas Howell
1954-5-8
s.n.
Tulare
Tulare River Valley, 4.5 miles below Springville, Sierra Nevada
243
Comment
CAS-BOT-BC134916
Phoradendron bolleanum
John Thomas Howell
1962-6-15
37435
Butte
Magalia. Sierra Nevada
731
Comment
CAS-BOT-BC134929
Phoradendron bolleanum
John Thomas Howell
1948-4-26
24270
Kern
Tehachapi Mts. 7 miles from Mohave
Comment
CAS-BOT-BC135043
Phoradendron bolleanum
John Thomas Howell
1960-5-1
35229
Tuolumne
Near Pinecrest. Sierra Nevada
1584
Comment
CAS-BOT-BC135161
Phoradendron juniperinum
John Thomas Howell; Gordon H. True
1970-5-28
5365
Nevada
Bear Valley on Highway 20, ca. 20 mi E of Nevada City. Sierra Nevada
1402
Comment
CDA22380
Phoradendron pauciflorum
J. T. Howell
1970-9-23
47325
Kern
Sierra Nevada; Near Tiger Flat, east side of Sunday Peak, Greenhorn Mountains.
Comment
CAS-BOT-BC141165
Phoradendron serotinum subsp. macrophyllum
John Thomas Howell
1926-12-26
2271
Merced
Near Hopeton Bridge, Merced River bottom
Comment
CAS-BOT-BC141274
Phoradendron serotinum subsp. tomentosum
John Thomas Howell; Gordon H. True
1971-6-15
47872
Kern
Lightners Flat on road from Mt. Breckenridge to Havilah, Sierra Nevada
1828
Comment
CAS-BOT-BC141320
Phoradendron serotinum subsp. tomentosum
John Thomas Howell
1945-6-24
21243
Marin
Hidden Lake Fien Trail, Mt.Tamalpais
Comment
UCD89831
Phragmites australis
John Thomas Howell
1963-8-21
40207
Inyo
Alabama Hills, west of Lone Pine. Along Lone Pine Creek.
1371
Comment
CAS-BOT-BC73473
Picea breweriana
John Thomas Howell
1937-7-24
13413
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
RSA0059699
Picea breweriana
J. T. Howell
1937-7-24
13413
Siskiyou
Caribou Basin, Salmon-Trinity Alps.
1982
Comment
RSA0059701
Picea breweriana
J. T. Howell
1937-7-24
13413
Siskiyou
Caribou Basin, Salmon-Trinity Alps.
1982
Comment
CAS-BOT-BC78260
Pinus albicaulis
John Thomas Howell
1944-8-11
s.n.
Tuolumne
Lambert Dome, Tuolumne Meadows
2865
Comment
CAS-BOT-BC78504
Pinus contorta subsp. murrayana
John Thomas Howell
1950-7-22
27207
Tulare
Timberline, Olancha Peak
Comment
CAS-BOT-BC73001
Pinus monophylla
John Thomas Howell
1958-5-22
33187
Tulare
Sierra Nevada - Kern River Canyon near Roads End P.O.
1066
Comment
CAS-BOT-BC78895
Pinus monophylla
John Thomas Howell
1960-3-24
35150 A
Riverside
Pinyon Flat, [Palms-to-Pines] Palms to Pines Highway, San Jacinto Mts.
Comment
CAS-BOT-BC72826
Pinus ponderosa
John Thomas Howell
1960-8-20
36206
Tehama
Near Lassen Volcanic National Park, Morgan
1463
Comment
CAS-BOT-BC72745
Pinus sabiniana
John Thomas Howell; Gordon H. True
1967-5-29
42358
Tulare
Sierra Nevada, Kern Plateau - midway between Chimney and Lamont Meadows.
1889
Comment
CAS-BOT-BC80024
Pinus sabiniana
John Thomas Howell
1960-3-25
35162
Kern
West side of Walker Pass
1432
Comment
CAS-BOT-BC254432
Piptatherum miliaceum
John Thomas Howell
1943-8-16
19309
San Francisco
SE corner Filbert and Van Ness Avenue, San Francisco, in vacant lot
Comment
POM226101
Plagiobothrys bracteatus
J. T. Howell
1933-5-21
11321
Napa
Napa
Comment
RSA88343
Plagiobothrys chorisianus var. hickmanii
J. T. Howell
1953-5-7
s.n.
San Benito
Roadside hollow, 3 miles northwest of San Juan
Comment
CAS-BOT-BC230966
Plagiobothrys hispidulus
John Thomas Howell; Gordon H. True
1973-7-31
50093
Plumas
Summit ridge of Thompson Peak, Diamond Range
2194
Comment
CAS-BOT-BC231046
Plagiobothrys hispidulus
John Thomas Howell; Gordon H. True
1969-9-30
46388
Tulare
Kern Plateau. Poison Meadow
2316
Comment
SD149176
Plagiobothrys hispidus
John Thomas Howell
1963-8-22
40274
Mono
2.5 miles south of Crestview.
Comment
SD149175
Plagiobothrys kingii var. harknessii
John Thomas Howell
1958-5-27
33517
Inyo
Bishop Creek.
2040
Comment
GH403983
Plagiobothrys reticulatus var. rossianorum
J. T. Howell
1937-6-6
13016
Unknown
Sebastopol
Comment
CAS-BOT-BC58735
Plagiobothrys scouleri
John Thomas Howell
1934-6-15
12193
Modoc
Dorris Reservoir, 2 mi. E of Alturas.
Comment
CAS-BOT-BC58744
Plagiobothrys scouleri
John Thomas Howell
1934-6-15
12186
Modoc
Alturas.
Comment
CAS-BOT-BC58760
Plagiobothrys scouleri
John Thomas Howell
1934-7-2
12360
Modoc
Near mouth of Willow Creek, NE side of Clear Lake.
Comment
RSA39949
Plagiobothrys scouleri var. hispidulus
J. T. Howell
1943-7-19
18581
Placer
Summit Valley
Comment
SEINET8252054
Plagiobothrys tenellus
Thomas Howell
1889-1
1384
Unknown
Hornbrook.
Comment
JEPS37918
Plantago elongata
John Thomas Howell
1934-3-25
11780
Napa
Cuttings Wharf Napa River
Comment
SD71271
Plantago elongata
John Howell
1965-4-27
41256
Merced
Low alkaline flats and rainpools, 5 miles east of Los Banos,
29
Comment
JEPS39466
Plantago erecta
John Thomas Howell
1956-5-6
31349
San Francisco
Sierra Street and 22nd Street (San Francisco); San Francisco
Comment
RSA424277
Plantago truncata subsp. firma
J. T. Howell
1944-5-21
19500
Marin
Lagunitas Meadows north side of Mount Tamalpais.
244
Comment
RSA43362
Plectritis ciliosa subsp. ciliosa
J. T. Howell
1948-4-26
24289
Santa Clara
West side of Pacheco Pass near summit.
Comment
CAS-BOT-BC326579
Pleurocoronis pluriseta
John Thomas Howell
1928-1-29
3299
Riverside
Painted Canyon, Colorado Desert
Comment
SEINET195361
Pleuropogon californicus
J. T. Howell
1945-5-9
20828
Marin
Between Hamilton Field and Ignacio.
Comment
CAS-BOT-BC260933
Pleuropogon californicus var. californicus
John Thomas Howell
1941-6-10
16280
Marin
Near Black Point
Comment
CAS-BOT-BC260953
Pleuropogon californicus var. californicus
John Thomas Howell
1945-5-9
20828
Marin
Between Hamilton Field and Ignacio
Comment
CAS-BOT-BC260988
Pleuropogon californicus var. californicus
John Thomas Howell
1947-6-26
23316
Sonoma
Cunningham Marsh
Comment
CAS-BOT-BC261007
Pleuropogon californicus var. davyi
John Thomas Howell
1954-4-24
29143
Mendocino
5 miles north of Hopland
Comment
GH360621
Pleuropogon hooverianus
J. T. Howell
1943-5-22
18155
Unknown
Lagunitas Meadows, Mt. Tamalpais
Comment
UC421657
Pluchea odorata var. odorata
John Thomas Howell
1927-9-24
3117
Orange
Santa Ana Canyon
152
Comment
CAS-BOT-BC326616
Pluchea sericea
John Thomas Howell
1927-7-24
2823
Orange
Santa Ana River bottom, Santa Ana Canyon
152
Comment
RSA40179
Poa
J. T. Howell
1944-7-16
19813
Glenn
Black Butte
Comment
CAS-BOT-BC254757
Poa bolanderi
John Thomas Howell
1943-7-21
18643
Placer
Donner Pass to Mount Lincoln
Comment
CAS-BOT-BC254827
Poa bolanderi
John Thomas Howell; Gordon H. True
1966-7-11
41707
Tulare
Horse Meadow, Kern Plateau
2255
Comment
CAS-BOT-BC254969
Poa bulbosa
John Thomas Howell; Gordon H. True
1967-5-7
42184
Plumas
Injin Jim Campground at confluence of Granite Creek and North Fork of Feather RIver
609
Comment
SEINET7293871
Poa bulbosa subsp. bulbosa
John Thomas Howell, Gordon H. True
1969-1
45723
Tulare
Roadside flat, mouth of Brush Creek, Kern River Canyon
1189
Comment
CAS-BOT-BC254638
Poa cusickii subsp. epilis
John Thomas Howell
1944-8-15
20538
Tuolumne
Mount Conness
3505
Comment
CAS-BOT-BC255143
Poa cusickii subsp. epilis
John Thomas Howell
1943-7-22
18713
Placer
Summit Valley
Comment
CAS-BOT-BC246676
Poa howellii
John Thomas Howell
1956-3-27
31243
Monterey
Santa Lucia Mountains. Bixby Creek Canyon
Comment
POM304497
Poa keckii
J. T. Howell
1942-7-31
17488
Tulare
Above timberline, Mt. Kaweah
Comment
RSA24108
Poa keckii
J. T. Howell
1947-8-14
24108
Inyo
Inconsolable Range above Thunder and Lightning Lake.
3659
Comment
UC905083
Poa keckii
John Thomas Howell
1949-7-19
25507
Tulare
Rock Creek; Sierra Nevada
3200
Comment
CAS-BOT-BC246797
Poa leibergii
John Thomas Howell
1942-7-31
17470
Tulare
Mt. Kaweah
Comment
CAS-BOT-BC246811
Poa leibergii
John Thomas Howell
1949-8-9
26199
Tulare
Cirque Peak
3733
Comment
CAS-BOT-BC255870
Poa leibergii
John Thomas Howell
1963-7-10
39734
Alpine
0.5 mile west of Monitor Pass, Sierra Nevada
2529
Comment
SEINET10893572
Poa nevadensis
John Thomas Howell
1943-8-3
Howell 18976
Glenn
Plaskett Meadows.
1829
Comment
CAS-BOT-BC247329
Poa pratensis
John Thomas Howell
1944-6-4
19545
Marin
Inverness Ridge west of Inverness
Comment
CAS-BOT-BC255200
Poa pratensis
John Thomas Howell
1949-7-19
25492
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC247049
Poa secunda subsp. juncifolia
John Thomas Howell
1958-5-29
33618
Inyo
Bishop
1264
Comment
CAS-BOT-BC247070
Poa secunda subsp. juncifolia
John Thomas Howell
1963-7-10
39696
Alpine
Grover Hot Springs
1798
Comment
CAS-BOT-BC247081
Poa secunda subsp. juncifolia
John Thomas Howell
1955-7-19
30800
Plumas
Vinton
1505
Comment
SEINET7294035
Poa secunda subsp. juncifolia
John Thomas Howell, Gordon H. True
1970-1
47007
Tulare
West side od Big Meadow just south of Pipe Spring.
2377
Comment
SEINET7294047
Poa secunda subsp. juncifolia
John Thomas Howell
1978-1
53355
Nevada
5 miles north of Truckee on road to Sierraville
1768
Comment
CAS-BOT-BC235940
Poa secunda subsp. secunda
John Thomas Howell
1948-7-23
24929
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC236173
Poa secunda subsp. secunda
John Thomas Howell
1943-5-11
18019
Lake
1 miles S of Lakeport
Comment
CAS-BOT-BC242940
Poa secunda subsp. secunda
John Thomas Howell
1943-7-16
18397
Nevada
W side of Donner Pass near Norden, Boreal Ridge
2133
Comment
CAS-BOT-BC243246
Poa secunda subsp. secunda
John Thomas Howell; et al.
1981-5-14
53950
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-BC244516
Poa secunda subsp. secunda
John Thomas Howell
1943-8-8
19182
Mendocino
Anthony Peak, Tehoma-Mendocino County
Comment
CAS-BOT-BC244529
Poa secunda subsp. secunda
John Thomas Howell
1941-4-17
s.n.
Marin
Tiburon Peninsula
Comment
CAS-BOT-BC236348
Poa secunda subsp. secunda
John Thomas Howell
1953-4-26
28929
Alameda
Hills at W end of Corral Hollow
Comment
CAS-BOT-BC243012
Poa secunda subsp. secunda
John Thomas Howell
1933-4-22
11057
San Benito
Between Paicines and Pinnacles Post Office
Comment
SEINET7294131
Poa secunda subsp. secunda
John Thomas Howell
1955-1
30268
Tuolumne
Meadowy place between Long Barn and Pinecrest
1707
Comment
CAS-BOT-BC244149
Poa sierrae
John Thomas Howell; Gordon H. True
1969-6-23
45801
Plumas
Lewisia Rock, Feather River Canyon
609
Comment
UC710576
Poa stebbinsii
John Thomas Howell
1944-8-8
20153
Mariposa
high gap s of Elizabeth Lake
Comment
CAS-BOT-BC244166
Poa trivialis
John Thomas Howell; Gordon H. True
1968-6-10
44551
Plumas
Quincy
1036
Comment
CAS-BOT-BC244214
Poa unilateralis
John Thomas Howell
1933-4-12
10995
Marin
Sausalito hills
Comment
CAS-BOT-BC170347
Polygala cornuta var. cornuta
John Thomas Howell
1936-8-25
12783
Trinity
Near Trinity Center
Comment
CAS-BOT-BC419777
Polygonum argyrocoleon
John Thomas Howell
1948-7-2
24770
Los Angeles
Palos Verdes Hills
Comment
RSA215896
Polygonum argyrocoleon
J. T. Howell
1957-6-16
32640
San Francisco
Third and Davidson streets.
Comment
CAS-BOT-BC414161
Polygonum aviculare subsp. aviculare
John Thomas Howell; Gordon H. True
1967-6-11
42550
Yolo
NW. of Woodland
Comment
CAS-BOT-BC414282
Polygonum aviculare subsp. depressum
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
53939
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-BC414334
Polygonum aviculare subsp. rurivagum
John Thomas Howell
1963-6-22
39579
Monterey
Priest Valley
685
Comment
UC473457
Polygonum californicum
John Thomas Howell
1930-10-12
5568
El Dorado
4 mi n Placerville
Comment
CAS-BOT-BC218142
Polygonum douglasii
John Thomas Howell
1934-6-12
12002
Modoc
Davis Creek.
Comment
CAS-BOT-BC414617
Polygonum douglasii
John Thomas Howell
1950-7-13
26798
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
POM203796
Polygonum douglasii
J. T. Howell
1934-6-12
12002
Modoc
Davis Creek
Comment
UCD100239
Polygonum douglasii
John Thomas Howell
1960-7-18
35569
Plumas
Lassen Volcanic National Park. Drakesbad.
1676
Comment
RSA22223
Polygonum douglasii subsp. johnstonii
J. T. Howell
1938-8-7
14322
Mono
Crooked Creek.
2058
Comment Read comments Jul 2 2012
SEINET12884070
Polygonum minimum
J. T. Howell
1944-1
20308
Unknown
Comment
CAS-BOT-BC419822
Polygonum parryi
John Thomas Howell
1943-8-4
19054
Glenn
Summit ridge n. of Black Butte
Comment
CAS-BOT-BC419831
Polygonum parryi
John Thomas Howell
1940-5-19
15466
Napa
Upper St. Helena Creek
Comment
CAS-BOT-BC419844
Polygonum parryi
John Thomas Howell
1954-6-4
29920
Tuolumne
Between Twain Harte and Stanislaus River bridge
Comment
SEINET12884039
Polygonum parryi
J. T. Howell
1945-1
21062
Unknown
Comment
CAS-BOT-BC420120
Polygonum polygaloides subsp. kelloggii
John Thomas Howell; Gordon H. True
1966-7-11
41735
Tulare
Horse Meadow, Kern Plateau
2255
Comment
CAS-BOT-BC419923
Polygonum polygaloides subsp. kelloggii
John Thomas Howell
1977-8-3
52569
Alpine
At summit of Ebbetts Pass
2651
Comment
CAS-BOT-BC420031
Polygonum polygaloides subsp. kelloggii
John Thomas Howell
1925-6-30
1268
Placer
Near Eagle Falls, Emerald Bay, Lake Tahoe.
Comment
CAS-BOT-BC420060
Polygonum polygaloides subsp. kelloggii
John Thomas Howell; H. Keith Wagnon
1980-5-27
53615
Plumas
1 mile west of Almanor
1386
Comment
CAS-BOT-BC420145
Polygonum ramosissimum subsp. ramosissimum
John Thomas Howell
1934-7-8
12501
Lassen
Spalding's, Eagle Lake
Comment
RSA127092
Polygonum spergulariiforme
J. T. Howell
1947-9-6
24182
Marin
E of Dillons Beach
Comment
CAS-BOT-BC71889
Polypodium californicum
John Thomas Howell
1928-2-9
3331
Los Angeles
Santa Anita Canyon, San Gabriel Mts.
Comment
CAS-BOT-BC72095
Polypodium scouleri
John Thomas Howell
1957-5-17
32314
San Francisco
Bayview Hills
Comment
CAS-BOT-BC232466
Polypogon monspeliensis
John Thomas Howell
1963-5-18
39326
Monterey
2.5 miles S of Aromas
60
Comment
CAS-BOT-BC237304
Polypogon monspeliensis
John Thomas Howell
1956-9-9
31859
San Francisco
San Francisco. Near stand at SE end of Lake Merced
Comment
CAS-BOT-BC237623
Polypogon viridis
John Thomas Howell; Gordon H. True
1967-9-18
43780
Tulare
Kern Plateau. Recreation area, N end of Lamont Meadow
1706
Comment
CAS-BOT-BC72190
Polystichum dudleyi
John Thomas Howell
1948-5-22
24308
Marin
Camp Tucker, Mt. Tamalpais
Comment
CAS-BOT-BC102568
Populus fremontii
John Thomas Howell
1956-3-24
31181
Monterey
San Antonio River near the mission
Comment
CAS-BOT-BC102713
Populus tremuloides
John Thomas Howell
1944-8-14
s.n.
Tuolumne
Glen Aulin
Comment
CAS-BOT-BC102996
Populus trichocarpa
John Thomas Howell
1950-7-16
26947
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC105608
Populus trichocarpa
John Thomas Howell
1927-7-21
2809
Orange
On edge of marshy place but above water, Santa Ana River bottom, Santa Ana Canyon [Canon]
152
Comment
CAS-BOT-BC356151
Porophyllum gracile
John Thomas Howell
1929-3-2
4097
Orange
In hills on n. side of Santa Ana Canon [Canyon], 1/2 mile east of Horseshoe Bend
152
Comment
SEINET10460777
Porterella carnosula
Howell
1969-9-29
Howell 46282
Tulare
Upper Dry lake, east of north end of Long Meadow
2393
Comment
CAS-BOT-BC445274
Portulaca oleracea
John Thomas Howell
1959-9-21
34749
Plumas
Sand bars of N. Fk. Feather River, near Belden
701
Comment
RSA216120
Potamogeton foliosus
J. T. Howell
1957-8-15
32894 a
San Francisco
Ponds in strybing Arboretum, Golden Gate Park, San Francisco County
Comment
CAS-BOT-BC267228
Potamogeton robbinsii
John Thomas Howell
1947-8-15
24127
Inyo
Big Pine Lakes, Fourth Lakes
3291
Comment
CAS-BOT-BC143159
Potentilla breweri
John Thomas Howell
1941-7-31
16586
Madera
Agnew Pass
Comment
CAS-BOT-BC143255
Potentilla flabellifolia
John Thomas Howell
1937-7-24
13398
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
CAS-BOT-BC143278
Potentilla flabellifolia
John Thomas Howell
1944-8-8
20105
Tuolumne
Between Elizabeth Lake and Tuolumne Meadows
Comment
RSA442244
Potentilla glandulosa subsp. pseudorupestris
J. T. Howell
1947-8-9
23963
Inyo
Seventh Lake. Big Pine Lakes.
3415
Comment
CAS-BOT-BC158444
Potentilla glaucophylla var. glaucophylla
John Thomas Howell
1946-7-14
22306
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC540409
Potentilla gracilis var. fastigiata
John Thomas Howell
1955-7-20
30832
Plumas
Sierra Nevada, Mohawk
1371
Comment
CAS-BOT-BC145249
Potentilla wheeleri
John Thomas Howell; Gordon H. True
1967-7-4
42942
Tulare
Troy Meadow. Kern Plateau.
2377
Comment
CAS-BOT-BC47633
Primula suffrutescens
John Thomas Howell
1949-8-9
26187
Tulare
Cirque Peak
3733
Comment
CAS-BOT-BC47635
Primula suffrutescens
John Thomas Howell
1951-7-18
27924
Tulare
Franklin Pass
3535
Comment
CAS-BOT-BC158596
Prunus
John Thomas Howell
1959-9-21
34782
Plumas
N. Fk. Feather River near Belden
701
Comment
CAS-BOT-BC159748
Prunus andersonii
John Thomas Howell
1958-5-27
33490
Inyo
North Fork of Bishop Creek
2438
Comment
CAS-BOT-BC162987
Prunus emarginata
John Thomas Howell
1927-8-29
3077
Tulare
NE end of Cahoon Meadow, Sequoia Park
2499
Comment
UCD113217
Prunus emarginata
John Thomas Howell
1960-8-18
36044
Tehama
Bluff Falls.
1981
Comment
CAS-BOT-BC158309
Prunus fasciculata var. fasciculata
John Thomas Howell
1927-6-11
2494
San Bernardino
Old road between Cajon Pass and Hesperia, Mojave Desert
1036
Comment
CAS-BOT-BC154585
Prunus ilicifolia
John Thomas Howell
1931-4-10
6227
Santa Barbara
Ravenswood, Santa Cruz Island
Comment
CAS-BOT-BC356510
Pseudognaphalium beneolens
John Thomas Howell
1970-9-22
47292
Tulare
Kern River Canyon, 3 miles south of Hospital Flat
853
Comment
UCSB7181
Pseudognaphalium luteoalbum
Howell, John
1943-6-29
San Francisco
Concert Valley, Golden State Park, San Francisco
Comment
CAS-BOT-BC357274
Pseudognaphalium microcephalum
John Thomas Howell
1962-9-25
38883
Kern
Kern River Bed, 3 miles north of Kernville
822
Comment
CAS-BOT-BC357619
Pseudognaphalium stramineum
John Thomas Howell
1962-7-9
38384
Kern
Near Park headquarters. Greenhorn Mountains
1798
Comment
CAS-BOT-BC361626
Pseudognaphalium stramineum
John Thomas Howell
1970-9-22
47316
Tulare
Fairview
1066
Comment
JEPS29571
Pseudognaphalium thermale
John Thomas Howell
1960-7-20
35756
Plumas
Boiling Springs Lake Lassen Volcanic Park, Boiling Springs Lake
1798
Comment
CAS-BOT-BC252508
Pseudoroegneria spicata subsp. spicata
John Thomas Howell
1934-6-30
12278
Modoc
Duncan Horse Camp.
1355
Comment
CAS-BOT-BC174804
Pseudostellaria jamesiana
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54232
Plumas
About 4 miles southeast of Mt. Hough on the road to Quincy
1645
Comment
RSA1136
Pseudotsuga macrocarpa
J. T. Howell
1928-7-8
1054
Riverside
Santa Ana Mountains above Glen Ivy
1524
Comment
RSA983
Pseudotsuga menziesii
J. T. Howell
1927-8-25
694
Mendocino
Near Wandling.
Comment
SEINET4456821
Pseudotsuga menziesii
T. J. Howell
1881-1
s.n.
Unknown
Pacific Coast
Comment
CAS-BOT-BC72520
Pteridium aquilinum
John Thomas Howell
1943-8-12
19285
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC421215
Pterostegia drymarioides
John Thomas Howell
1945-5-6
20806
Marin
San Rafael Hills
Comment
CAS-BOT-BC239771
Ptilagrostis kingii
John Thomas Howell
1940-8-1
15838
Tulare
Between Reflection Lake and Harrison Pass
Comment
UCD92940
Ptilagrostis kingii
John Thomas Howell
1942-7-29
17378
Tulare
Little Five Lakes Basin.
Comment
RSA1360
Purshia tridentata var. glandulosa
J. T. Howell
1929-2-21
1242
San Bernardino
Cactus Flats.
Comment
CAS-BOT-BC462899
Pyrola asarifolia
John Thomas Howell
1963-6-3
39398
Plumas
Sierra Nevada, Butterfly Valley
Comment
CAS-BOT-BC462625
Pyrola dentata
John Thomas Howell
1958-8-2
34193
Fresno
Sierra Nevada: Copper Creek Canyo Trail
2286
Comment
CAS-BOT-BC462910
Pyrola dentata
John Thomas Howell
1949-7-30
25912 A
Tulare
Between Tunnel and Ramshaw Meadows
2712
Comment
CAS-BOT-BC362267
Pyrrocoma carthamoides var. cusickii
John Thomas Howell
1962-6-17
37716
Plumas
Portola
1463
Comment
CAS-BOT-BC362282
Pyrrocoma lanceolata var. lanceolata
John Thomas Howell
1978-7-26
53194
Nevada
Boca Flats on Little Truckee River, 5 miles north of Hirschdale on road to Stampede Reservoir
1767
Comment
CAS-BOT-BC328158
Pyrrocoma lucida
John Thomas Howell
1959-9-25
35007
Plumas
Sierra Valley near Beckwourth, Sierra Nevada
1493
Comment
CAS-BOT-BC104419
Quercus X subconvexa
John Thomas Howell; John Tucker
1947-8-31
24175
Marin
Ridgecrest Road N of Alpine Lake
Comment
RSA127061
Quercus X subconvexa
J. T. Howell, J. M. Tucker
1947-8-31
24175
Marin
Ridgecrest road north of AlpineLake.
Comment
UCD47295
Quercus X subconvexa
John Thomas Howell
1952-5-15
28314
Marin
Serpentine at south end of Tiburon Peninsula, Marin Co.
Comment
CAS-BOT-BC62779
Quercus berberidifolia
John Thomas Howell
1945-7-15
21302
Marin
Fairfax Hills near Camp Lilienthal
Comment
RSA164
Quercus berberidifolia
J. T. Howell
1927-6-16
143
Orange
Botany Garden, Rancho Santa Ana.
152
Comment
CAS-BOT-BC86862
Quercus douglasii
John Thomas Howell
1970-9-24
47355
Kern
S of Bodfish
853
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-BC86432
Quercus dumosa
John Thomas Howell
1930-10-25
5671
Monterey
Canyon of the Arroyo Seco River, Santa Lucia Mts.
Comment
CAS-BOT-BC62798
Quercus garryana
John Thomas Howell
1955-6-15
30500
Butte
6 miles form Paradise on road to Pentz
426
Comment
CAS-BOT-BC94305
Quercus garryana
John Thomas Howell
1943-8-6
19139
Glenn
Meadow SE of Black Butte
Comment
CAS-BOT-BC94682
Quercus garryana var. breweri
John Thomas Howell
1962-5-22
37372
Tulare
1.5 mi E of Johnsondale
1371
Comment
CAS-BOT-BC105126
Quercus kelloggii
John Thomas Howell
1925-11-27
1574
Solano
Green Valley
Comment
CAS-BOT-BC105231
Quercus kelloggii
John Thomas Howell
1967-11-6
44183
Kern
Greenhorn Mountains. 6.5 miles from Glennville on road to Kernville
1371
Comment
CAS-BOT-BC105260
Quercus kelloggii
John Thomas Howell
1940-9-22
s.n.
Marin
Phoenix lake, Mt. Tamalpais
Comment
CAS-BOT-BC105494
Quercus kelloggii
John Thomas Howell
1936-8-28
12869
Trinity
12 miles from Douglas City on road to Peanut
Comment
CAS-BOT-BC62881
Quercus lobata
John Thomas Howell
1933-8-27
11630
Napa
Sage canyon, Napa Range
Comment
CAS-BOT-BC134867
Quercus wislizeni
John Thomas Howell
1926-6-13
2013
Stanislaus
Knight's Ferry
76
Comment
CAS-BOT-BC362736
Raillardella argentea
John Thomas Howell
1944-8-8
20155
Mariposa
High gap south of Elizabeth Lake
Comment
CAS-BOT-BC362780
Raillardella argentea
John Thomas Howell
1949-7-24
25697
Tulare
Primrose Lake
3505
Comment
CAS-BOT-BC379282
Ranunculus alismifolius var. alismellus
John Thomas Howell; Gordon H. True
1970-6-23
46631
Tulare
Kern Plateau, forest border, NE end of Big Meadow
2377
Comment
CAS-BOT-BC379309
Ranunculus alismifolius var. alismellus
John Thomas Howell
1950-7-14
26805
Tulare
south Fork of Kern River, at Bakeoven Meadow
2469
Comment
CAS-BOT-BC378928
Ranunculus bulbosus
John Thomas Howell
1975-6-15
51128
Plumas
Sierra Nevada, Quincy
488
Comment
UC827725
Ranunculus eschscholtzii var. suksdorfii
John Thomas Howell
1937-7-25
13439
Siskiyou
Caribou Basin Salmon-Trinity Alps
1981
Comment
RSA95438
Ranunculus occidentalis var. ultramontanus
J. T. Howell
1951-6-27
27621
Plumas
Jamison Creek
1829
Comment
UC1176752
Ranunculus repens
John Thomas Howell
1946-6-9
22014
Marin
Pierce Ranch Point Reyes Peninsula
Comment
RSA1043
Rhamnus crocea
J. T. Howell
1927-8-16
s.n.
Santa Barbara
Near Buelton
Comment
RSA518952
Rhamnus rubra
J. T. Howell
1958-7-23
33782
Fresno
Simpson Meadow, Middle Fork of the Kings River
1829
Comment
CAS-BOT-BC58106
Rhododendron columbianum
John Thomas Howell
1942-7-29
17363
Tulare
Little Five Lakes Basin.
Comment
CAS-BOT-BC58112
Rhododendron columbianum
John Thomas Howell
1949-7-20
25546
Tulare
Rock Creek.
3444
Comment
CAS-BOT-BC56642
Rhododendron occidentale
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-29
53175
Calaveras
Snowshoe Spring near Dorrington
1463
Comment
A347072
Rhus integrifolia
J. T. Howell
1927-6-16
2545
Unknown
Santa Ana Canyon
Comment
CAS-BOT-BC167878
Rhus integrifolia
John Thomas Howell
1927-7-29
2870
Orange
North side of Santa Ana [Canon] Canyon
243
Comment
CAS-BOT-BC170437
Rhus integrifolia
John Thomas Howell
1927-6-18
2556
San Bernardino
Aliso Canyon, southern Puente Hills near Santa Ana Canyon
Comment
CAS-BOT-BC111894
Rhynchospora californica
John Thomas Howell
1945-8-14
21382
Sonoma
Perry Marsh
182
Comment
CAS-BOT-BC111929
Rhynchospora recognita
John Thomas Howell
1945-7-18
21324
Sonoma
Pitkin Marsh
Comment
JEPS85661
Ribes
John Thomas Howell
1925-6-10
1143
El Dorado
Eagle Lake Trail Lake Tahoe region
Comment
CAS-BOT-BC92279
Ribes amarum
John Thomas Howell
1928-2-18
3351
Los Angeles
Trail to Switzer's, Arroyo Seco, San Gabriel Mountains.
Comment
CAS-BOT-BC92429
Ribes aureum var. gracillimum
John Thomas Howell
1930-4-6
4667
Santa Clara
9 miles from summit of Mount Hamilton on road to San Antonio Valley.
Comment
CAS-BOT-BC168884
Ribes lobbii
John Thomas Howell
1943-8-8
19205
Tehama
Log Spring Ridge
Comment
CAS-BOT-BC209276
Ribes menziesii
John Thomas Howell
1944-3-26
19352
Marin
Pines of Inverness Ridge n. of Mt. Vision
Comment
UC1176762
Ribes menziesii
John Thomas Howell
1944-7-9
19695
Marin
Inverness
Comment
A380639
Ribes nevadense
J. T. Howell
1937-7-26
13528
Unknown
Caribou Basin, Salmon-Trinity Alps
1981
Comment
CAS-BOT-BC219197
Ribes nevadense
John Thomas Howell
1924-5-11
308 A
Mariposa
Near Wawona, Wawona Valley
1219
Comment
CAS-BOT-BC186231
Ribes roezlii var. roezlii
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54239
Plumas
About 3 miles southeast of Mt. Hough on road to Quincy
1737
Comment
CAS-BOT-BC198970
Ribes roezlii var. roezlii
John Thomas Howell
1925-6-10
1146
El Dorado
Eagle Lake, Lake Tahoe Region
Comment
CAS-BOT-BC173877
Ribes velutinum
John Thomas Howell
1958-5-27
33480
Inyo
North Fork of Bishop Creek
2438
Comment
CAS-BOT-BC173924
Ribes velutinum
John Thomas Howell; Gordon H. True
1967-7-5
43054
Tulare
4.7 miles north of Chimney Meadow, Kern Plateau
2255
Comment
CAS-BOT-BC173965
Ribes viscosissimum
John Thomas Howell
1925-6-10
1143
El Dorado
Eagle Lake Trail, Lake Tahoe region
2042
Comment
CAS-BOT-BC363047
Rigiopappus leptocladus
John Thomas Howell
1931-4-3
6130
Napa
Pope Creek Canyon, 8 miles from Monticello, Napa Range
Comment
CAS-BOT-BC74586
Rorippa curvisiliqua
John Thomas Howell
1963-8-5
39915
Monterey
Along Watsonville-San Juan Road, about 2 miles south of Aromas.
Comment
CAS-BOT-BC74748
Rorippa curvisiliqua
John Thomas Howell
1948-7-30
25191
Tulare
John Muir Trail west of Center Peak.
3200
Comment
CAS-BOT-BC74791
Rorippa palustris var. palustris
John Thomas Howell
1925-7-4
1377
El Dorado
Emerald Bay, Lake Tahoe.
1889
Comment
CAS-BOT-BC147498
Rosa californica
John Thomas Howell
1946-6-30
22162
Marin
Rodeo Lagoon
Comment
CAS-BOT-BC152655
Rosa californica
John Thomas Howell
1932-9-18
10773
Sonoma
Bank of slough draining Kenwood Marsh
Comment
RSA88310
Rosa eglanteria
J. T. Howell
1953-5-23
28992
Tuolumne
Inwaste ground, Columbia.
640
Comment
CAS-BOT-BC148167
Rosa gymnocarpa
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54191
Plumas
4 miles north of Grays Flat, on road to Long Valley - Sierra Nevada
1447
Comment
CAS-BOT-BC146995
Rosa woodsii subsp. ultramontana
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-12
54497
Mono
Iris Meadow, Rock Creek Canyon
2560
Comment
CAS-BOT-BC149750
Rosa woodsii subsp. ultramontana
John Thomas Howell; Gordon H. True
1966-7-13
41973
Tulare
Dry Lake on Cherry Hill Road south of Big Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC149761
Rosa woodsii subsp. ultramontana
John Thomas Howell
1950-7-23
27247
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
SEINET208524
Rostraria cristata
John T. Howell
1956-4-16
31248
Alameda
Alameda; street weed at Paru and Dayton Streets
Comment
CDA3945
Rubus armeniacus
J. T. Howell
1943-8-29
19311
Marin
Summit (Avenue) Ridge, Mill Valley.
0
Comment
CAS-BOT-BC148000
Rubus leucodermis
John Thomas Howell
1937-7-27
13585
Trinity
Coffee Creek Canyon near Union Creek
Comment
CAS-BOT-BC148027
Rubus leucodermis
John Thomas Howell; Alice Eastwood
1938-7-7
6128
Mendocino
Cummins P.O.
Comment
CAS-BOT-BC148390
Rubus leucodermis
John Thomas Howell
1974-7-9
50482
Lassen
Coniferous forest between Susanville and SW end of Eagle Lake
1828
Comment
A346283
Rubus ursinus
J. T. Howell
1938-6-4
13888
Unknown
Burlingame
Comment
CAS-BOT-BC156921
Rubus ursinus
John Thomas Howell
1967-6-23
42679
Plumas
Canyon of Butterfly Creek
1036
Comment
CAS-BOT-BC156952
Rubus ursinus
John Thomas Howell
1957-5-22
32381
San Francisco
Bayview Hills, San Francisco
Comment
CAS-BOT-BC158771
Rubus ursinus
John Thomas Howell
1962-6-15
37455
Butte
Magalia - Sierra Nevada
731
Comment
UC1177247
Rubus ursinus
John Thomas Howell
1943-4-11
17894
Marin
Black Canyon San Rafael Hills, Black Canyon
Comment
RSA220067
Rubus ursinus var. sirbenus
J. T. Howell
1956-8-26
31815
San Francisco
Near Pine Lake.
Comment
POM261516
Rubus vitifolius
J. T. Howell
1938-5-22
13799
Marin
San Anselmo Canyon.
Comment
CAS-BOT-BC363184
Rudbeckia californica
John Thomas Howell
1969-8-26
45925
Tulare
Monarch Creek Trail near Mineral King
2590
Comment
CAS-BOT-BC421964
Rumex acetosella
John Thomas Howell
1966-4-18
41483
Marin
John Thomas Howell Botanical Garden, Tiburon
Comment
CAS-BOT-BC422068
Rumex acetosella
John Thomas Howell
1964-6-29
40818
San Luis Obispo
Near St. Paul's Episcopal Church, Cambria
Comment
CAS-BOT-BC416361
Rumex californicus
John Thomas Howell
1956-6-10
31530
San Francisco
North slope of Bay View Hills, San Francisco
Comment
CAS-BOT-BC422192
Rumex californicus
John Thomas Howell; Gordon H. True
1970-7-27
46923
Tulare
Forest border of Big Meadow, on the east side at Joughin Camp. Kern Plateau
2377
Comment
CAS-BOT-BC421745
Rumex conglomeratus
John Thomas Howell
1976-10-29
52286
El Dorado
Along the course of Sweetwater Creek below the high-water line of Folsom Lake
121
Comment
CAS-BOT-BC433402
Rumex crispus
John Thomas Howell
1960-8-22
36361
Shasta
Lassen Volcanic National Park. Manzanita Lake
1783
Comment
CAS-BOT-BC433665
Rumex obtusifolius
John Thomas Howell
1941-6-29
16346
Marin
Cascade Canyon, Mill Valley
Comment
CAS-BOT-BC433762
Rumex pulcher
John Thomas Howell
1954-5-16
29583
Sacramento
4 miles southeast of Folsom on Placerville road
121
Comment
CAS-BOT-BC433813
Rumex pulcher
John Thomas Howell
1964-6-29
40781
San Luis Obispo
Cambria
Comment
CAS-BOT-BC434088
Rumex transitorius
John Thomas Howell
1937-7-30
13695
Trinity
Dan Rice Creek, Scott Mts.
Comment
CAS-BOT-BC434291
Rumex triangulivalvis
John Thomas Howell
1943-7-21
18686
Nevada
West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC434322
Rumex triangulivalvis
John Thomas Howell
1955-7-20
30878
Sierra
Near Calpine
1508
Comment
CAS-BOT-BC434275
Rumex triangulivalvis
John Thomas Howell
1938-8-8
14412
Mono
Mammouth [Mammoth] Lakes Basin
Comment
GH364824
Rumex venosus
J. T. Howell & G. H. True
1973-5-12
49231
Unknown
Northwest of Doyle on road to Milford
1280
Comment
CAS-BOT-BC103055
Salix bonplandiana
John Thomas Howell; Catherine Best
1983-4-19
54720
Kern
Kern River Preserve of The Nature Conservancy, South Fork Valley near Weldon
Comment
CAS-BOT-BC129639
Salix bonplandiana
John Thomas Howell; Gordon H. True
1966-7-10
41594
Tulare
On bank of Kern River at Roads End - Sierra Nevada
1066
Comment
CAS-BOT-BC129756
Salix bonplandiana
John Thomas Howell
1970-9-22
47236
Kern
Along Kern River between Kernville and River Kern - Sierra Nevada
822
Comment
CAS-BOT-BC129905
Salix bonplandiana
John Thomas Howell; Gordon H. True; Lewis S. Rose
1968-6-12
4294
Butte
Feather River Canyon near Pulga Bridge
609
Comment
CAS-BOT-BC103290
Salix bonplandiana
John Thomas Howell
1931-3-21
5921
Santa Barbara
Flood plain of Cuyama River 30 miles from Maricopa
Comment
CAS-BOT-BC102862
Salix breweri
John Thomas Howell
1963-6-21
39504
Monterey
Mustang Grade east of San Lorenzo Creek
Comment
A382493
Salix eastwoodiae
J. T. Howell
1940-8-4
15961
Unknown
East Lake
2926
Comment
A382570
Salix eastwoodiae
J. T. Howell
1946-7-12
22227
Unknown
Dingley Creek at Dog Lake Trail
Comment
CAS-BOT-BC103656
Salix eastwoodiae
John Thomas Howell
1969-9-13
46120
Sierra
Little Truckee River near outlet of Webber Lake
2042
Comment
CAS-BOT-BC103883
Salix exigua
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54187
Plumas
Rush Creek
1402
Comment
CAS-BOT-BC107978
Salix exigua
John Thomas Howell
1970-9-22
47286
Tulare
3 miles south of Hospital Flat, Kern River Canyon, Sierra Nevada
853
Comment
CAS-BOT-BC108378
Salix exigua
John Thomas Howell
33513
Inyo
Bishop Creek - Sierra Nevada
2042
Comment
GH382681
Salix exigua
J. T. Howell & G. H. True
1974-5-31
7694
Unknown
Highway 49, at South Wolf Creek bridge, 3.6 miles north of Bear River
400
Comment
CAS-BOT-BC103967
Salix geyeriana
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-12
54503
Mono
Rock Creek Road to Rock Creek Lake Basin
2849
Comment
CAS-BOT-BC106961
Salix lasiolepis
John Thomas Howell
1960-3-25
35160
Kern
Headwaters of Cane Brake Creek west of Walker Pass summit
1463
Comment
CAS-BOT-BC107232
Salix lasiolepis var. bigelovii
John Thomas Howell
1958-2-20
33013
San Francisco
North side of Lone Mt. - San Francisco
Comment
CAS-BOT-BC128256
Salix lasiolepis var. lasiolepis
John Thomas Howell; Gordon H. True
1967-9-19
43826
Tulare
Flood-plain of Kern River South Fork, Kennedy Meadows Campground - Kern Plateau, Sierra Nevada
1859
Comment
CAS-BOT-BC124941
Salix lemmonii
John Thomas Howell
1960-8-18
36096
Tehama
Sulphur Works Entrance Station
2011
Comment
RSA503349
Salix lucida subsp. lasiandra
J. T. Howell
1975-6-4
51025
Tuolumne
S Fork Tuolumne River S of Mather.
Comment
CAS-BOT-BC125574
Salix lutea
John Thomas Howell
1969-9-5
46215
Mono
Leavitt Meadow
2194
Comment
CAS-BOT-BC125653
Salix melanopsis
John Thomas Howell
1945-6-21
21208
Lake
Near Barlett Springs
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-BC125806
Salix orestera
John Thomas Howell
1938-8-8
14417
Mono
Mammoth Lakes Basin
Comment
RSA44403
Salix orestera
J. T. Howell
1947-8-8
23926
Inyo
Second to Third Lake, Big Pine Lakes.
3049
Comment
CAS-BOT-BC125925
Salix planifolia
John Thomas Howell
1944-8-12
20426
Tuolumne
Gaylor Lakes
3261
Comment
CAS-BOT-BC125964
Salix scouleriana
John Thomas Howell
1927-2-13
2280
Alameda
Strawberry [Canon] Canyon above Britton Grove, south wall
304
Comment
CAS-BOT-BC126254
Salix scouleriana
John Thomas Howell
1960-5-1
35230
Tuolumne
Near Pinecrest
1584
Comment
CAS-BOT-BC129032
Salix scouleriana
John Thomas Howell
1961-6-20
36576
Tehama
Sulphur Works entrance - Lassen Volcanic National Park
2011
Comment
SD130419
Salix scouleriana
John Thomas Howell
1958-5-24
33268
Inyo
Whitney Portal
2530
Comment
CAS-BOT-BC129099
Salix scouleriana
John Thomas Howell
1960-7-20
35730
Plumas
Between meadow and forest, Drakesbad - Lassen Volcanic National Park
1828
Comment
CAS-BOT-BC126429
Salix sitchensis
John Thomas Howell
1944-3-26
19346
Marin
Point Reyes road beyond Ledum Swamp
Comment
RSA126189
Salix sitchensis
J. T. Howell
1947-3-23
23047
Marin
Cataract Gulch. Mt. Tamalpais.
Comment
RSA79908
Salpichroa origanifolia
J. T. Howell
1945-7-23
21332
San Francisco
Golden Gate Park, San Francisco
Comment
SBBG44568
Salsola tragus
J. T. Howell
1950-7-11
Kern
Mojave
Comment
CAS-BOT-BC180685
Salsola tragus
John Thomas Howell
1956-7-29
31742
San Francisco
Filled land south of Bayview Hills, San Francisco
Comment
CAS-BOT-BC180702
Salsola tragus
John Thomas Howell
1950-11-9
27480
Los Angeles
Devil's Gate Dam, Pasadena
Comment
CAS-BOT-BC229979
Salvia mellifera
John Thomas Howell
1927-6-8
2460
Orange
Southern Puente Hills, in the Santa Ana Canon [Canyon]
213
Comment
CAS-BOT-BC233290
Salvia mellifera
John Thomas Howell
1923-11-12
247
Contra Costa
Mt. Diablo
Comment
CAS-BOT-BC233412
Salvia mellifera
John Thomas Howell
1928-4-21
3734
Ventura
Northern slopes of hills above lagoon at Pt. Mugu
60
Comment
CAS-BOT-BC238849
Sambucus nigra subsp. caerulea
John Thomas Howell
1924-8-10
612
Plumas
Crescent Mills
1219
Comment
CAS-BOT-BC246091
Sambucus nigra subsp. caerulea
John Thomas Howell
1927-6-12
2536
San Bernardino
Near Cajon Pass on old road to Hesperia, Mojave Desert
1097
Comment
RSA126183
Sanguisorba minor
J. T. Howell
1949-6-7
25341
Marin
Aurora School, NW Marin.
Comment
CAS-BOT-BC328138
Santolina chamaecyparissus
John Thomas Howell
1956-6-24
31611
San Francisco
North side of Bayview Hills, San Francisco
Comment
CAS-BOT-BC466337
Sarcodes sanguinea
John Thomas Howell; Gordon H. True
1970-7-14
5561
Sierra
Verdi Peak Road ca 3 miles from intersection with Dog Valley--Stampede Dam Road
2346
Comment
CAS-BOT-BC239872
Schismus arabicus
John Thomas Howell
1977-3-11
52348
San Diego
Southeast of Agua Caliente, Anza Borrego Deset State Park
Comment
CAS-BOT-BC239905
Schismus arabicus
John Thomas Howell
1976-5-18
51702
Kern
Kernville
807
Comment
UCD92913
Schismus arabicus
John Thomas Howell; Gordon H. True
1966-3-29
41426
Tulare
South of Tulare.
Comment
CAS-BOT-BC111226
Schoenoplectus californicus
John Thomas Howell
1927-6-30
2624
Los Angeles
In swamp on coastal plain one mile east of Long Beach.
15
Comment
RSA32524
Schoenoplectus fluviatilis
J. T. Howell
1945-6-22
21220
Lake
Clear Lake Oaks
Comment
RSA97
Schoenoplectus maritimus
J. T. Howell
1927-6-30
237
Orange
Bryant Ranch near Long Beach.
15
Comment
SD134072
Scirpus congdonii
John Thomas Howell
1977-8-2
52484
Alpine
Mosquito Lake on Ebbetts Pass Road, Canadian Zone.
2438
Comment
UC1176791
Scirpus microcarpus
John Thomas Howell
1946-7-7
Marin
Potrero Meadow Mt. Tamalpais, Potrero Meadow
Comment
CAS-BOT-BC111045
Scirpus microcarpus
John Thomas Howell
1956-10-28
31940
San Francisco
Among willows, Mountain Lake, Presidio.
Comment
CAS-BOT-BC111131
Scirpus microcarpus
John Thomas Howell; Gordon H. True
1971-6-16
47979
Tulare
<eadpw om Jeffrey pine forest, Claraville.
1920
Comment
SEINET7592504
Scirpus microcarpus
John Thomas Howell
1936-1
12768
Trinity
Scott Mts.
Comment
CAS-BOT-BC519011
Scoliopus bigelovii
John Thomas Howell
1924-2-23
265
San Mateo
King Mountain
Comment
CAS-BOT-BC239968
Scribneria bolanderi
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52897
Calaveras
Near Wallace
66
Comment
CAS-BOT-BC240035
Scribneria bolanderi
John Thomas Howell
1948-4-18
24209
Sonoma
Hills east of Agua Caliente
Comment
CAS-BOT-BC243496
Scribneria bolanderi
John Thomas Howell
1954-5-18
29800
Amador
2 miles NNE of Buena Vista, Sierra Nevada
91
Comment
RSA99655
Scribneria bolanderi
J. T. Howell
1953-5-23
29005
Tuolumne
Between Long Barn and Pinecrest.
1707
Comment
SEINET10959759
Scribneria bolanderi
John Thomas Howell
1945-5-27
Howell 20879
Marin
Serpentine area above Bootjack, Mt. Tamalpais, .
Comment
UCD124822
Scrophularia californica
John Thomas Howell
1957-5-6
32206 A
San Francisco
Hunters Point; San Francisco, California.
Comment
RSA51478
Scrophularia californica var. desertorum
J. T. Howell
1949-7-30
25922
Tulare
Volcanic cone at Tunnel.
2927
Comment
CAS-BOT-BC415014
Sedella pumila
John Thomas Howell
1976-4-1
51535
Butte
Table Mountain, 4 to 5 miles N of Oroville
304
Comment
RSA98991
Sedella pumila
J. T. Howell
1953-5-25
29046
Tuolumne
Twain Harte.
1128
Comment
SD77923
Sedum album
John Thomas Howell
1957-8-6
32878
San Francisco
Golden Gate Park
Comment
CAS-BOT-BC64191
Sedum obtusatum
John Thomas Howell
1944-7-27
16471
Madera
Canyon of Middle Fork San Joaquin River,
2743
Comment
CAS-BOT-BC69065
Sedum radiatum subsp. radiatum
John Thomas Howell
1960-6-6
35317
Fresno
Kings Canyon road, 8 mi W of Horseshoe Bend/
1463
Comment
RSA16
Selaginella bigelovii
John Thomas Howell
1927-7-28
506
Orange
Nolina Canyon, Rancho Santa Ana
152
Comment
CAS-BOT-BC496372
Selaginella scopulorum
John Thomas Howell
1937-7-26
13521
Siskiyou
Salmon-Trinity Alps, Caribou Basin
2286
Comment
RSA26406
Selaginella wallacei
John Thomas Howell
1941-4-5
16163
Napa
Franz Valley
Comment
CAS-BOT-BC69030
Selaginella watsonii
John Thomas Howell
1946-7-26
22728
Fresno
Mono Mesa
3657
Comment
CAS-BOT-BC340794
Senecio flaccidus var. monoensis
John Thomas Howell
1928-4-3
3697
Inyo
Wild Rose Canon [Wildrose Canyon] below Wild Rose [Wildrose] Spring, Panamint Mts.
Comment
CAS-BOT-BC363709
Senecio hydrophilus
John Thomas Howell
1946-6-13
22029
Marin
Chileno Valley
Comment
CAS-BOT-BC363810
Senecio integerrimus var. exaltatus
John Thomas Howell
1934-6-14
12158
Lassen
Near Lost Lake, Warner Mts.
2438
Comment
CAS-BOT-BC363932
Senecio integerrimus var. exaltatus
John Thomas Howell
1937-7-22
13309
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC363999
Senecio integerrimus var. major
John Thomas Howell
1925-6-27
1192
Placer
Tahoe Tavern, Lake Tahoe
1889
Comment
UCD135596
Senecio minimus
John Thomas Howell
1944-7-30
19857
Marin
Almonte.
Comment
CAS-BOT-BC364132
Senecio mohavensis
John Thomas Howell
1928-3-24
3527
Riverside
Painted Canon [Canyon], Colorado Desert
Comment
CAS-BOT-BC333013
Senecio scorzonella
John Thomas Howell
1942-8-4
17659
Tulare
Little Five Lakes Basin
Comment
CAS-BOT-BC333030
Senecio scorzonella
John Thomas Howell
1947-8-15
24133
Inyo
Fourth Lake, Big Pine Lakes
3291
Comment
CAS-BOT-BC332930
Senecio spartioides
John Thomas Howell
1949-7-30
25910
Tulare
Tunnel to Ramshaw Meadow
2712
Comment
CAS-BOT-BC364335
Senecio triangularis
John Thomas Howell
1946-7-15
22390
Inyo
Between Mosquito Flat and Ruby Lake, Rock Creek Lake Basin
Comment
CAS-BOT-BC364355
Senecio triangularis
John Thomas Howell
1924-6-7
382
Mariposa
Along the Merced River, Wawona
1219
Comment
CAS-BOT-BC364396
Senecio triangularis
John Thomas Howell; Gordon H. True
1967-7-11
43365
Plumas
Southeast slope of Mt. Hough
2042
Comment
CAS-BOT-BC364487
Senecio triangularis
John Thomas Howell
1949-8-6
26084
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC364378
Senecio triangularis
John Thomas Howell
1934-7-17
18453
Nevada
West side of Donner Pass near Norden
2133
Comment
RSA51462
Senecio werneriifolius
J. T. Howell
1949-8-5
26067
Inyo
Army Pass
3659
Comment
SEINET208612
Sequoia sempervirens
John Thomas Howell
1957-2-3
32020
Marin
Fern Canyon Mt.Tamalpais.
Comment
CAS-BOT-BC243544
Setaria parviflora
John Thomas Howell
1946-9-8
22997
Marin
Phoenix Lake, Mt. Tamalpais
Comment
RSA99633
Setaria pumila
J. T. Howell
1954-10-21
30112
Marin
Roadside hollow near Bootjack, Mt. Tamalpais
Comment
CAS-BOT-BC240273
Setaria viridis
John Thomas Howell; Walter Knight; Irja Knight
1987-5-21
6237
Sonoma
Todd Road Preserve
24
Comment
CAS-BOT-BC216260
Shepherdia argentea
John Thomas Howell
1944-8-4
19913
Mono
Mono Lake, w. shore
Comment
CAS-BOT-BC213115
Sidalcea
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52871
Calaveras
Near Fourth Crossing on Hwy. 49, SE of San Andreas
Comment
POM304545
Sidalcea hickmanii subsp. viridis
J. T. Howell
1942-6-21
s.n.
Marin
Carson Ridge
Comment
RSA7439
Sidalcea malviflora subsp. malviflora
J. T. Howell
1933-4-9
10974
San Mateo
2 miles N. of Pigeon Pt.
Comment
CAS-BOT-BC179083
Sidalcea oregana subsp. oregana
John Thomas Howell
1934-6-30
12286
Modoc
Duncan Horse Camp.
1355
Comment
SEINET3228072
Sidalcea oregana subsp. valida
John Thomas Howell
1932-1
Sonoma
Comment
CAS-BOT-BC384487
Silene antirrhina
John Thomas Howell
1946-5-12
21795
Marin
Carson Ridge
Comment
GH376655
Silene aperta
J. T. Howell
1950-7-17
27003
Unknown
Trail from Bakeoven to Templeton Meadows
2682
Comment
CAS-BOT-BC384335
Silene bernardina
John Thomas Howell
1946-7-15
22392
Inyo
Between Mosquito Flat & Ruby Lake, Rock Creek Lake Basin
Comment
CAS-BOT-BC384554
Silene bridgesii
John Thomas Howell
1923-7-9
111
Mariposa
Near Stella Lake, Wawona
1219
Comment
CAS-BOT-BC392460
Silene gallica
John Thomas Howell
1964-6-29
40835
San Luis Obispo
Near St. Paul's Episcopal Church, Cambria
Comment
UCD98659
Silene gallica
John Thomas Howell
1953-6-15
29080
Monterey
Santa Lucia Mountains. Hastings reservation.
Comment
CAS-BOT-BC389299
Silene lemmonii
John Thomas Howell
1925-7-2
1352 A
El Dorado
Between Fallen Leaf Camp and Lake Tahoe
Comment
CAS-BOT-BC389384
Silene lemmonii
John Thomas Howell
1960-7-20
35715
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC389609
Silene sargentii
John Thomas Howell
1946-8-31
22952 A
El Dorado
Mt. Tallac
2956
Comment
CAS-BOT-BC389786
Silene sargentii
John Thomas Howell
1947-8-5
23748
Inyo
Fifth Lake, Big Pine Lakes
3352
Comment
CAS-BOT-BC389887
Silene scouleri subsp. scouleri
John Thomas Howell
1957-6-30
32799
San Francisco
San Francisco. Summit ridge, Bayview Hills
Comment
CAS-BOT-BC75434
Sisymbrium orientale
John Thomas Howell
1956-4-22
31264
San Francisco
San Francisco. Embarcadero at Powell Street.
Comment
CAS-BOT-BC135354
Sisyrinchium
John Thomas Howell
1958-7-30
34140
Fresno
Simpson Meadow, Middle Fork of the Kings River - Sierra Nevada
1828
Comment
SEINET7262148
Solanum umbelliferum
J. T. Howell
1931-1
5951
Monterey
Stone Canyon
Comment
RSA473646
Solidago californica
J. T. Howell
1931-5-25
6541
Santa Barbara
Mission Ridge
Comment
CAS-BOT-BC364959
Solidago elongata
John Thomas Howell
1958-7-23
33849
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC365603
Solidago elongata
John Thomas Howell
1942-7-26
17211
Tulare
Mineral King
Comment
CAS-BOT-BC339874
Solidago multiradiata
John Thomas Howell
1950-7-21
27143
Tulare
Monache Meadows near Soda Creek
2438
Comment
CAS-BOT-BC365726
Solidago spathulata
John Thomas Howell
1956-8-26
31819
San Francisco
San Francisco. Near Pine Lake
Comment
CAS-BOT-BC365658
Solidago spathulata
John Thomas Howell
1946-8-17
22866
Sonoma
Cunningham Marsh
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
CAS-BOT-BC157286
Sorbus californica
John Thomas Howell
1958-8-17
34563
Madera
The Niche, East Fork of Granite Creek
2438
Comment
CAS-BOT-BC390183
Spergularia bocconi
John Thomas Howell
1933-5-24
11339
San Francisco
Point Lobos, San Francisco
Comment
CAS-BOT-BC390742
Spergularia marina
John Thomas Howell; Gordon H. True
1972-6-29
48914
Contra Costa
On Byron Hot Springs Road southeast of Byron
Comment
NY482346
Spergularia marina
J. T. Howell
1978-4-4
52720
Solano
Subsaline flats Bordering Denverton Slough
Comment
CAS-BOT-BC390809
Spergularia marina
John Thomas Howell
1930-5-12
4896
Los Angeles
5.5 miles north of Lancaster, Mojave Desert
Comment
CAS-BOT-BC390620
Spergularia rubra
John Thomas Howell
1962-7-11
38590
Kern
Shirley Meadows, Greenhorn Mountains
2011
Comment
RSA0098541
Spergularia salina
J. T. Howell
1927-6-30
236
Orange
Bryant Ranch near Long Beach.
15
Comment
CAS-BOT-BC149706
Spiraea splendens
John Thomas Howell
1977-8-2
52498
Alpine
Mosquito Lake on Ebbetts Pass Road
2438
Comment
CAS-BOT-BC152559
Spiraea splendens
John Thomas Howell
1937-7-29
13671
Siskiyou
North side of Scott Mt.
Comment
CAS-BOT-BC152777
Spiraea splendens
John Thomas Howell
1946-7-15
s.n.
Inyo
Ruby Lake, Rock Creek Lake Basin
Comment
CAS-BOT-BC235467
Sporobolus indicus
John Thomas Howell
1957-8-5
32859
San Francisco
San Francisco. Strybing Arboretum, Golden Gate Park
Comment
UC1176920
Stebbinsoseris heterocarpa
John Thomas Howell
1946-5-12
Marin
Fairfax Country Club
Comment
CAS-BOT-BC391110
Stellaria longipes subsp. longipes
John Thomas Howell
1958-7-23
33797
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC391124
Stellaria longipes subsp. longipes
John Thomas Howell
1946-7-14
22278
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC393723
Stellaria media
John Thomas Howell
1924-5-13
313
Mariposa
Wawona
1219
Comment
CAS-BOT-BC397718
Stellaria nitens
John Thomas Howell
1964-4-28
40544
Mariposa
just S of Morman Bar on road to Ben Hur
548
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
RSA39941
Stenotus acaulis
J. T. Howell
1943-7-17
18465
Nevada
Signal Hill, west side of Donner Pass near Norden.
2134
Comment
CAS-BOT-BC375222
Stephanomeria elata
John Thomas Howell
1945-9-2
21456
Marin
San Rafael Hills
Comment
CAS-BOT-BC375215
Stephanomeria elata
John Thomas Howell
1951-8-21
28285
Yuba
Near Camptonville
762
Comment
JEPS53967
Stephanomeria exigua subsp. coronaria
John Thomas Howell
1967-11-6
44187
Kern
3.3 mi from Woody (on road to Glennville); Sierra Nevada, Greenhorn Mountains
Comment
CAS-BOT-BC322972
Stephanomeria tenuifolia
John Thomas Howell
1942-7-25
17191
Tulare
Eagle Lake Trail near Mineral King
Comment
JEPS74314
Stephanomeria virgata subsp. pleurocarpa
John Thomas Howell
1973-11-2
50319
Ventura
7.5 mi from Pine Mt. (summit on road to Ventura, roadside in Sespe Creek Canyon); Sespe Creek Canyon
Comment
RSA438
Stillingia paucidentata
J. T. Howell
1927-6-12
128
San Bernardino
Near Victorville.
823
Comment
SEINET10610764
Stipa occidentalis
John Thomas Howell
1944-8-6
Howell 20018
Tuolumne
Slope north of Tuolumne County.
Comment
CAS-BOT-BC61171
Streptanthus batrachopus
John Thomas Howell
1946-6-23
22122
Marin
Carson Ridge.
Comment
POM259268
Streptanthus batrachopus
J. T. Howell
1939-5-14
s.n.
Marin
East of Collier Spring, Mount Tamalpais
Comment
GH422180
Streptanthus glandulosus subsp. albidus
J. T. Howell
1937-7-5
13097
Unknown
Metcalf Road in hills east of Coyote
Comment
UC710413
Streptanthus glandulosus subsp. secundus
John Thomas Howell
1943-5-9
17976
Marin
San Rafael Hills
Comment
CAS-BOT-BC87774
Streptanthus tortuosus
John Thomas Howell
1943-7-21
18659
Placer
Donner Pass to Mount Lincoln.
Comment
CAS-BOT-BC519055
Streptopus amplexifolius
John Thomas Howell
1943-8-11
19273
Glenn
Canyon of Snow Basin Creek
Comment
RSA220057
Stylocline gnaphaloides
J. T. Howell
1963-5-7
39246
Monterey
San Lorenzo Creek, 6 miles northeast of King City.
183
Comment
POM261436
Styrax redivivus
J. T. Howell
1940-6-30
15589
Lake
Soda Bay.
Comment
POM193911
Suaeda moquinii
J. T. Howell
1926-6-11
2000
Merced
Merced plains, 9 miles sw. of Merced
Comment
RSA54055
Suaeda taxifolia
J. T. Howell
1948-7-2
24764
Los Angeles
Redondo Beach.
Comment
CAS-BOT-BC88000
Subularia aquatica subsp. americana
John Thomas Howell
1940-8-3
15940
Tulare
East Lake.
Comment
CAS-BOT-BC271697
Symphoricarpos albus var. laevigatus
John Thomas Howell
1924-8-10
607
Plumas
Near Greenville
1371
Comment
CAS-BOT-BC239032
Symphoricarpos rotundifolius
John Thomas Howell
1943-7-15
18340
Nevada
West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC239043
Symphoricarpos rotundifolius
John Thomas Howell; Gordon H. True
1969-10-1
46438
Tulare
Snake Spring, about 2.5 miles north of Poison Meadow. Kern Plateau
2499
Comment
JEPS58963
Symphyotrichum ascendens
J. Thomas Howell
1963-8-22
40267
Inyo
Bishop
Comment
UC517562
Symphyotrichum bracteolatum
J. Thomas Howell
1926-7-27
2143
Plumas
near Prattville
1463
Comment
CAS-BOT-BC99129
Symphyotrichum chilense
John Thomas Howell
1962-9-26
38935
Kern
Sierra Nevada, Greenhorn Mountains - 6.5 miles east of Glennville
1371
Comment
CAS-BOT-BC99133
Symphyotrichum chilense
John Thomas Howell
1933-10-8
11700
Marin
1 mile east of Forest Knolls
Comment
CAS-BOT-BC99135
Symphyotrichum chilense
John Thomas Howell
1957-9-15
32956
Marin
Slope just above salt marsh bordering Richardson Bay
Comment
CAS-BOT-BC97954
Symphyotrichum frondosum
John Thomas Howell; Gordon H. True
1967-9-19
43843
Tulare
Flood-plain of Kern River South Fork, Kennedy Meadows Campground. Kern Plateau
1859
Comment
CAS-BOT-BC99324
Symphyotrichum spathulatum
John Thomas Howell
1940-8-2
15888
Tulare
Slope north of Reflection Lake
3352
Comment
JEPS58959
Symphyotrichum spathulatum
J. Thomas Howell
1961-9-25
36958
Plumas
Portola Sierra Nevada
1478
Comment
CAS-BOT-BC98891
Symphyotrichum spathulatum var. intermedium
John Thomas Howell
1938-8-7
14327
Mono
Crooked Creek
2057
Comment
CAS-BOT-BC98254
Symphyotrichum subulatum var. parviflorum
John Thomas Howell
1981-10-13
54624
Sutter
Bobelaine Audubon Sanctuary, Feather River at mouth of Bear River
9
Comment
RSA136754
Systenotheca vortriedei
J. T. Howell
1955-7-8
s.n.
Monterey
Santa Lucia Mountains; Hanging Valley
838
Comment
CAS-BOT-BC211539
Tamarix parviflora
John Thomas Howell
1928-4-3
3680
Inyo
Furnace Creek Wash at Death Valley
Comment
RSA244731
Tanacetum camphoratum
J. T. Howell
1972-9-6
s.n.
San Francisco
Just S of the Cliff House. San Francisco.
Comment
CAS-BOT-BC377002
Taraxacum officinale
John Thomas Howell; Gordon H. True
1967-8-7
43472
Tulare
On Beach Creek just north of Beach Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC323026
Tetradymia stenolepis
John Thomas Howell
1927-7-9
2666
San Bernardino
1 mile west of Deadman's Point, Mojave Desert
914
Comment
CAS-BOT-BC438242
Tetragonia tetragonoides
John Thomas Howell
1963-9-4
40318
Monterey
Moss Landing
Comment
CAS-BOT-BC392334
Thalictrum fendleri
John Thomas Howell
1948-7-22
24838
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC176281
Thamnosma montana
John Thomas Howell
1928-1-31
3322
Riverside
Rocky soil of Mission Creek Wash, n. Coachella Valley, Colorado Desert
304
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-BC197393
Thinopyrum intermedium subsp. barbulatum
John Thomas Howell; Gordon H. True
1971-7-16
48628
Tulare
Near Redwood Meadow Creek, about 2 miles west of Johnsondale
2072
Comment
CAS-BOT-BC197417
Thinopyrum intermedium subsp. intermedium
John Thomas Howell; Gordon H. True
1967-8-7
43427
Tulare
About 2 miles northwest of Beach Meadow, Kern Plateau
2499
Comment
CAS-BOT-BC207187
Thinopyrum intermedium subsp. intermedium
John Thomas Howell
1978-7-29
53354
Nevada
5 miles north of Truckee on road to Sierraville - Sierra Nevada
1767
Comment
UCD93342
Thinopyrum ponticum
John Thomas Howell
1973-7-25
50016
Merced
Ingomar.
30
Comment
CAS-BOT-BC88252
Thysanocarpus curvipes
John Thomas Howell
1933-5-14
11274
Contra Costa
Hills east of Saint Mary's College.
Comment
CAS-BOT-BC88411
Thysanocarpus curvipes
John Thomas Howell
1945-6-18
21006
Lake
Bartlett Mountain. Sawmill Flat.
1219
Comment
CAS-BOT-BC67109
Thysanocarpus laciniatus
John Thomas Howell
1933-4-23
11124
San Benito
The Pinnacles.
Comment
CAS-BOT-BC67060
Thysanocarpus laciniatus
John Thomas Howell
1957-4-28
32055
Monterey
Near Hastings Reservation.
594
Comment
CAS-BOT-BC67226
Thysanocarpus laciniatus
John Thomas Howell; Gordon H. True
1968-5-13
44332
Tulare
Sierra Nevada. Kern Plateau. Cherry Hill Road at Rincon Trail, Brush Creek Canyon.
1463
Comment
CAS-BOT-BC447618
Tolmiea menziesii
John Thomas Howell
1943-8-9
19223
Glenn
Plaskett Meadows
1828
Comment
GH355421
Torreya californica
J. T. Howell
1972-4-25
48715
Unknown
Merced River canyon, 1 mile from Arch Rock on road to Cascade Falls
914
Comment
RSA384710
Torreya californica
J. T. Howell
1948-5-16
24304
Marin
Near top of Eldridge Grade, Mount Tamalpais
Comment
UCR143029
Torreya californica
J. T. Howell
1948-5-16
24303
Marin
Mt. Tamalpais, near top of Eldridge Grade
Comment
NY20768
Torreya californica
J. T. Howell
1948-5-16
24303
Marin
This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request.
Comment
UCD93197
Torreyochloa pallida var. pauciflora
John Thomas Howell
1958-8-17
34540
Madera
Cora Lake.
2560
Comment
SEINET10793102
Torreyochloa pallida var. pauciflora
John Thomas Howell
1946-6-13
Howell 22027
Marin
Chileno Valley
Comment
CAS-BOT-BC169197
Toxicodendron diversilobum
John Thomas Howell; Alice Eastwood
1938-5-17
5651
Lake
Near Upper Lake
Comment
CAS-BOT-BC172926
Toxicodendron diversilobum
John Thomas Howell
1962-6-15
37445
Butte
Magalia
731
Comment
CAS-BOT-BC377082
Tragopogon dubius
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-12
54548
Mono
Crowley Lake Drive (old Highway 395) at Hilton Creek
2164
Comment
CAS-BOT-BC111160
Trichophorum clementis
John Thomas Howell
1944-8-8
20108
Tuolumne
Elizabeth Lake
Comment
UC710587
Trichophorum clementis
John Thomas Howell
1944-8-12
20351
Tuolumne
Gaylor Lakes
3200
Comment
CAS-BOT-BC221035
Trichostema austromontanum subsp. austromontanum
John Thomas Howell; Gordon H. True
1967-9-19
43864
Tulare
Flood-plain of Kern River South Fork. Kennedy Meadows Campground. Kern Plateau
1859
Comment
UC1177208
Trifolium albopurpureum var. dichotomum
John Thomas Howell
1943-5-2
17932
Marin
Big Carson Canyon
Comment
UCD111197
Trifolium hirtum
John Thomas Howell
1966-5-8
41530
San Mateo
At junction of Millbrae Ave. and Bayshore Freeway, Millbrae.
Comment
UC866961
Trifolium kingii var. productum
John Thomas Howell
1938-8-2
13995
Placer
5 mi n Brockway
Comment
UC1106239
Trifolium microdon
John Thomas Howell
1940-5-20
15506
Marin
Point Reyes
Comment
RSA223621
Trifolium microdon
J. T. Howell
32532
San Francisco
North side of Lone Mountain
Comment
JEPS33667
Trifolium oliganthum
John Thomas Howell
1926-4-18
1907
Santa Clara
Uvas Canyon
Comment
UC1106242
Trifolium oliganthum
John Thomas Howell
1947-4-27
23080
Marin
w San Anselmo; Bald Mtn
Comment
RSA91574
Trifolium productum
J. T. Howell
13402
Siskiyou
Caribou Basin, Salmon-Trinity Alps
1982
Comment
CAS-BOT-BC451832
Triglochin maritima
John Thomas Howell
1944-4-23
19393
Marin
Escalle salt marsh
Comment
CAS-BOT-BC451953
Triglochin maritima
John Thomas Howell
1950-7-18
27048
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC451852
Triglochin maritima
John Thomas Howell
1945-6-30
21256
Marin
Marsh bordering Bolinas Lagoon, Stinson Beach
Comment
CAS-BOT-BC451965
Triglochin striata
John Thomas Howell
1946-7-4
22178
Marin
Dillons Beach
Comment
CAS-BOT-BC133468
Trillium ovatum
John Thomas Howell
1939-8-3
15020
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
CAS-BOT-BC238534
Triphysaria floribunda
John Thomas Howell
1957-5-6
32222
San Francisco
San Francisco. Hunters Point
Comment
CAS-BOT-BC200117
Trisetum canescens
John Thomas Howell; Gordon H. True
1971-7-13
48380
Tulare
At south-west end of Big Meadow, Kern Plateau
2438
Comment
GH361171
Trisetum canescens
J. T. Howell
1940-5-12
Unknown
Chianti Country
Comment
CAS-BOT-BC193533
Trisetum spicatum
John Thomas Howell
1951-6-28
27725
Plumas
Eureka Peak
2255
Comment
CAS-BOT-BC200278
Trisetum spicatum
John Thomas Howell
1942-7-26
17232
Tulare
Mineral King
Comment
CAS-BOT-BC519134
Triteleia hyacinthina
John Thomas Howell
1925-7-2
1360
El Dorado
Between Fallen Leaf Camp and Lake Tahoe
Comment
CAS-BOT-BC521545
Triteleia hyacinthina
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52921
Calaveras
Upper Sonoran foothills, Camanche Parkway South between Burson Road and Camanche Reservoir
152
Comment
CAS-BOT-BC525749
Triteleia ixioides subsp. scabra
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-26
53041
Calaveras
Sierra Nevada, near Dorrington
1524
Comment
POM203716
Triteleia laxa
J. T. Howell
1931-5-12
6468
Contra Costa
Oakland Hills
Comment
CAS-BOT-BC527554
Triteleia montana
John Thomas Howell; Gordon H. True
No date on label
43374
Plumas
About 2 miles southeast of Mt. Hough
1828
Comment
UC1106124
Triticum aestivum
John Thomas Howell
1944-6-25
Marin
San Rafael; along railroad
Comment
CAS-BOT-BC67440
Tropidocarpum gracile
John Thomas Howell
1983-4-21
s.n.
Kern
Sierra Nevada. Kernville.
Comment
CAS-BOT-BC91157
Umbellularia californica
John Thomas Howell
1947-3-2
23043
Marin
Mount Tamalpais. Above Phoenix Lake.
Comment
SBBG50221
Umbellularia californica var. californica
J. T. Howell
1954-5-10
Fresno
between Mountain Lake and Auberry
1097
Comment
CAS-BOT-BC381817
Uropappus lindleyi
John Thomas Howell
1978-4-17
52825
Butte
Skyway near Neal Road, Paradise
609
Comment
CAS-BOT-BC403947
Urtica dioica subsp. gracilis
John Thomas Howell
1943-10-3
19335
Marin
Canyon just below Muir Woods
Comment
CAS-BOT-BC404084
Urtica dioica subsp. holosericea
John Thomas Howell
1948-7-29
25175
Fresno
Bubbs Creek Canyon
2834
Comment
CAS-BOT-BC404105
Urtica dioica subsp. holosericea
John Thomas Howell
1960-3-25
35165
Kern
Cane Brake Creek, w. side Walker Pass
1341
Comment
CAS-BOT-BC404168
Urtica dioica subsp. holosericea
John Thomas Howell
1965-9-15
41397
Mono
Coleville
1755
Comment
CAS-BOT-BC240361
Utricularia minor
John Thomas Howell; Gordon H. True
1970-6-26
46894
Tulare
Salmon Creek, west side of Big Meadow, Kern Plateau
2377
Comment
A363154
Vaccinium cespitosum
J. T. Howell
1946-7-15
22414
Unknown
Ruby Lake, Rock Creek Lake Basin
3383
Comment
CAS-BOT-BC199164
Vaccinium cespitosum
John Thomas Howell; Gordon True; Walter Knight; Irja Knight
1968-6-11
2406
Plumas
Butterfly Botanical Area. Southeast end of Pond reservoir
Comment
UC750731
Vaccinium cespitosum
John Thomas Howell
1946-7-15
22414
Inyo
Ruby Lake Rock Creek Lake Basin
3383
Comment
CAS-BOT-BC193406
Vaccinium shastense subsp. nevadense
John Thomas Howell
1955-6-5
30278
Tuolumne
South Fork Stanislaus River - Sierra Nevada
914
Comment
CAS-BOT-BC199507
Vaccinium uliginosum
John Thomas Howell
1943-7-24
18773
Nevada
Frog Lake
Comment
CAS-BOT-BC5108
Velaea glauca var. purpurascens
John Thomas Howell
1937-7-30
13697 A
Trinity
About 7 miles from Trinity Center on road to Minersville
Comment
RSA654
Verbena lasiostachys
J. T. Howell
1927-7-19
448
Orange
Santa Ana River bottom, Rancho Santa Ana.
152
Comment
CAS-BOT-BC327024
Verbesina encelioides
John Thomas Howell
1928-5-20
3818
Ventura
Camarillo
Comment
RSA218008
Vicia angustifolia
J. T. Howell
1956-4-22
31263
San Francisco
San Francisco. Waste ground near Fishermans Wharf.
Comment
UC750599
Vicia benghalensis
John Thomas Howell
1945-5-20
Marin
Tiburon
Comment
RSA88312
Vicia villosa
J. T. Howell
1953-5-23
29002
Tuolumne
Roadside between Sonora and Tuolumne.
Comment
CAS-BOT-BC263844
Viola
John Thomas Howell
1967-6-23
42705
Plumas
Butterfly Valley
1066
Comment
CAS-BOT-BC263934
Viola adunca
John Thomas Howell
1943-8-4
19040
Glenn
Summit ridge N of Black Butte
Comment
CAS-BOT-BC270160
Viola pinetorum var. grisea
John Thomas Howell
1963-7-12
39850
El Dorado
Meyers
1935
Comment
CAS-BOT-BC270131
Viola pinetorum var. grisea
John Thomas Howell
1928-5-26
3845
Ventura
Chula Vista Camp, Mount Pinos
Comment
CAS-BOT-BC175694
Viola purpurea var. purpurea
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-27
53096
Alpine
Between Pacific and Hermit Valleys on Ebbetts Pass road
2133
Comment
RSA469
Vitis girdiana
J. T. Howell
1927-7-6
282
Orange
Santa Ana River bottom, Rancho Santa Ana
152
Comment
UCD93679
Vulpia microstachys
John Thomas Howell; Gordon H. True
1973-5-12
49202
Lassen
Elysian Valley NW of Janesville.
1325
Comment
CAS-BOT-BC183160
Vulpia microstachys var. ciliata
John Thomas Howell
1943-5-2
17930
Marin
Big Carson Canyon
Comment
CAS-BOT-BC199937
Vulpia microstachys var. ciliata
John Thomas Howell
1952-4-22
28307
Alameda
Tesla Hills w. of Corral Hollow
Comment
CAS-BOT-BC183781
Vulpia microstachys var. confusa
John Thomas Howell
1943-5-11
18022
Lake
1 mile south of Lakeport
Comment
CAS-BOT-BC184264
Vulpia microstachys var. pauciflora
John Thomas Howell
1948-4-26
24264
Kern
2 miles north of Mohave [Mojave]
Comment
CAS-BOT-BC184357
Vulpia microstachys var. pauciflora
John Thomas Howell
1967-5-5
42170
Marin
John Thomas Howell Botanical Garden, Tiburon
Comment
CAS-BOT-BC184490
Vulpia microstachys var. pauciflora
John Thomas Howell
1956-5-6
31347
San Francisco
Sierra & 22nd Sts., San Francisco
Comment
CAS-BOT-BC184581
Vulpia microstachys var. pauciflora
John Thomas Howell
1960-8-22
36348
Shasta
Manzanita Lake
1783
Comment
CAS-BOT-BC184620
Vulpia microstachys var. pauciflora
John Thomas Howell; Gordon H. True
1968-5-12
44205
Tulare
Brush Creek Canyon, Kern Plateau
1402
Comment
GH341894
Vulpia microstachys var. pauciflora
J. T. Howell
1938-4-10
13751
Unknown
Hospital Canyon
Comment
SEINET199931
Vulpia microstachys var. pauciflora
John Thomas Howell
20801
Marin
San Rafael Hills.
Comment
UCD94548
Vulpia microstachys var. pauciflora
John Thomas Howell
1962-7-9
38338
Kern
Isabella.
762
Comment
CAS-BOT-BC184710
Vulpia myuros subsp. megalura
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52878
Calaveras
Near Wallace
66
Comment
CAS-BOT-BC185677
Vulpia myuros subsp. megalura
John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight
1967-6-12
2007
Plumas
Butterfly Botanical Area and Vicinity
1127
Comment
CAS-BOT-BC178593
Vulpia myuros var. myuros
John Thomas Howell
1967-3-14
42039
Monterey
On San Simeon Hwy. at Pt. Sur
Comment
CAS-BOT-BC73638
Woodsia oregana
John Thomas Howell
1964-5-11
40707
Shasta
Lava flow just north of Hot Creek P.O.
Comment
CAS-BOT-BC77765
Woodsia scopulina
John Thomas Howell
1949-7-24
25699
Tulare
Primrose Lake
3505
Comment
CAS-BOT-BC77898
Woodwardia fimbriata
John Thomas Howell
1956-9-9
31871
San Francisco
West end of Lake Merced
Comment
CAS-BOT-BC383184
Wyethia angustifolia
John Thomas Howell
1957-5-17
32284
San Francisco
San Francisco. Bayview Hills
Comment
CAS-BOT-BC383567
Wyethia mollis
John Thomas Howell; Gordon H. True
1969-6-23
45815
Plumas
2 miles north of Nelson Point on road to Quincy
1310
Comment
CAS-BOT-BC383808
Xanthium strumarium
John Thomas Howell
1974-9-19
50882
Sutter
1.7 miles south of Robbins on road to Knights Landing
7
Comment
CAS-BOT-BC196886
Xylococcus bicolor
John Thomas Howell
1977-3-9
52317
San Diego
North of Escondido on highway to Temecula
Comment
CAS-BOT-BC527199
Zigadenus micranthus
John Thomas Howell
1955-6-13
30360
Trinity
Peanut
762
Comment
CAS-BOT-BC534276
Zigadenus venenosus
John Thomas Howell
1958-8-13
34385
Madera
Near Isberg Lake
2987
Comment
CAS-BOT-BC59373
Ziziphus parryi var. parryi
John Thomas Howell
1928-3-9
3390
San Bernardino
West end of Morongo Valley, s. Mojave Desert
914
Comment
CAS-BOT-BC454192
Zostera pacifica
John Thomas Howell
1947-6-18
23274
Marin
Dillons Beach
Comment