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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
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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
GH376139
Abronia maritima
J. T. Howell
1932-3-13
8230
Unknown
San Nicolas Island
Comment
CAS-BOT-BC383921
Abronia pogonantha
John Thomas Howell; Gordon H. True
1967-5-30
42421
Inyo
Ninemile Canyon
1432
Comment
CAS-BOT-BC383947
Abronia pogonantha
John Thomas Howell
1930-5-12
4912
Kern
8 miles ne. of Mojave, Mojave Desert
Comment
CAS-BOT-BC383996
Abronia turbinata
John Thomas Howell; Gordon H. True
1968-7-17
4418
Mono
On route 120 ca. 7 miles east of Hwy. 395 near Mono Craters. Pumice Flat near Mono Craters
2164
Comment
SBBG92153
Abronia villosa
D. F. Howe
1980-4-13
Imperial
Hwy 8, 9 mi E of Holtville
Comment
CAS-BOT-BC437003
Acaena pinnatifida var. californica
John Thomas Howell
1925-4-5
919
Marin
Pipeline Trail
Comment
SEINET5707726
Acamptopappus shockleyi
D. F. Howe
1980-1
s.n.
Inyo
5 miles west of California/Nevada state line on Highway 178.
835
Comment
CAS-BOT-BC28739
Achillea millefolium
John Thomas Howell
1960-7-18
35576
Plumas
Drakesbad
1828
Comment
CAS-BOT-BC30058
Achillea millefolium
John Thomas Howell
1942-8-7
17824
Tulare
Between Mineral King and Sawtooth Pass
Comment
CAS-BOT-BC260484
Achnatherum hymenoides
John Thomas Howell
1951-7-18
27873
Tulare
Mineral King and Vicinity. Franklin Pass Trail
2438
Comment
CAS-BOT-BC210621
Achnatherum lemmonii
John Thomas Howell; Gordon H. True
1970-6-22
46600 A
Kern
1.5 miles west of Greenhorn Summit
1584
Comment
CAS-BOT-BC210661
Achnatherum lemmonii
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50644
Lassen
South and southeast of Diamond Mt.
2286
Comment
CAS-BOT-BC210757
Achnatherum nelsonii
John Thomas Howell
1958-7-30
34139 A
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC210783
Achnatherum nelsonii
John Thomas Howell
1943-7-21
18688
Nevada
West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC216783
Achnatherum occidentale
John Thomas Howell
1958-8-1
34154
Fresno
Ridge N of Dougherty Meadow
3048
Comment
CAS-BOT-BC216917
Achnatherum occidentale
John Thomas Howell
1943-7-16
18420
Nevada
Boreal Ridge, W side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC216920
Achnatherum occidentale
John Thomas Howell
1939-8-6
15087
Siskiyou
Spirit Lake, Marble Mountains
1828
Comment
CAS-BOT-BC216973
Achnatherum occidentale
John Thomas Howell; Gordon H. True
1970-6-24
46695
Tulare
N Manter Creek, Big Meadow to Manter Meadow, Kern Plateau
2438
Comment
CAS-BOT-BC216977
Achnatherum occidentale
John Thomas Howell
1950-7-13
26775
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC210841
Achnatherum occidentale subsp. californicum
John Thomas Howell
1960-7-19
35684 A
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC210931
Achnatherum occidentale subsp. pubescens
John Thomas Howell
1955-7-19
30754
Plumas
Beckwourth
1493
Comment
CAS-BOT-BC210948
Achnatherum occidentale subsp. pubescens
John Thomas Howell; Gordon H. True
1967-8-9
43641
Tulare
Ca. 2.5 miles north of Blackrock Guard Station on Monache Jeep Trail, Kern Plateau
2682
Comment
CAS-BOT-BC210960
Achnatherum occidentale subsp. pubescens
John Thomas Howell; Gordon H. True
1971-7-15
48517
Tulare
About 1 mile south of Church Dome, Kern Plateau
2225
Comment
CAS-BOT-BC210973
Achnatherum occidentale subsp. pubescens
John Thomas Howell; Gordon H. True
1970-6-26
46871
Tulare
Taylor Meadow, Kern Plateau
2194
Comment
UCD51193
Achnatherum occidentale subsp. pubescens
John Thomas Howell
1943-7-27
18887
El Dorado
Silver Fork of American River.
1432
Comment
RSA299174
Achnatherum speciosum
J. T. Howell
1958-5-24
33306
Inyo
Whitney Portal road.
1982
Comment
CAS-BOT-BC418778
Aconogonon phytolaccifolium
John Thomas Howell
1960-8-18
36057
Tehama
Near Lassen Volcanic National Park. Bluff Falls
1981
Comment
CAS-BOT-BC29277
Adenocaulon bicolor
John Thomas Howell
1943-8-4
19001
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC9075
Aegilops triuncialis
John Thomas Howell; Gordon H. True
1971-5-26
47613
Yuba
About 8 miles east of Marysville
30
Comment
CAS-BOT-BC295591
Agnorhiza invenusta
John Thomas Howell
1962-7-10
38433
Kern
1.5 mile south of Summit, Greenhorn Mountains
1950
Comment
CAS-BOT-BC295683
Agnorhiza ovata
John Thomas Howell; Gordon H. True
1970-7-29
47105
Tulare
On road from Cannell Meadow to Pine Flat, Kern Plateau
2286
Comment
CAS-BOT-BC29496
Agoseris
J. T. Howell
1962-6-16
37565
Butte
Magalia
731
Comment
CAS-BOT-BC15503
Agoseris apargioides
John Thomas Howell
1933-5-7
s.n.
San Francisco
Presidio
Comment
SD81264
Agoseris apargioides var. eastwoodiae
Darley F. Howe
1969-5-27
4579
Marin
Sandy beach, Point Reyes, north entrance.
Comment
CAS-BOT-BC15397
Agoseris grandiflora var. grandiflora
John Thomas Howell
1930-5-30
5200
Solano
1 mile from Vacaville on road to Elmira
Comment
CAS-BOT-BC22948
Agoseris heterophylla
John Thomas Howell
1943-5-22
18131
Marin
Fairfax hills
Comment
CAS-BOT-BC22957
Agoseris heterophylla
John Thomas Howell
1943-5-23
18172
Alameda
Hills above Mills College
Comment
CAS-BOT-BC46030
Agoseris heterophylla var. cryptopleura
John Thomas Howell
1943-5-11
18012
Lake
1 mile south of Lakeport
Comment
CAS-BOT-BC13153
Agoseris hirsuta
John Thomas Howell
1957-5-5
32168
San Francisco
East end of 22nd Street
Comment
POM260853
Agoseris hirsuta
J. T. Howell
1940-6-30
15592
Lake
Soda Bay.
Comment
CAS-BOT-BC13281
Agoseris monticola
J. T. Howell; Gordon H. True
1970-7-28
46948
Tulare
Kern Plateau. West side of Big Meadow just south of Pipe Spring
2377
Comment
SD114284
Agrimonia gryposepala
Darley F. Howe
1950-7-8
2010
San Diego
West slope of Cuyamaca Middle Peak
1524
Comment
SDSU729
Agropyron trachycaulum
D. F. Howe
1941-8-8
1215
Inyo
Lone Pine Creek, Sierra Nevadas
3048
Comment
SEINET10806860
Agrostis
John Thomas Howell
1947-4-23
Howell 23062
Marin
Drakes Estero west of Mt. Vision, Pt. Reyes Peninsula.
Comment
UC1177041
Agrostis alba
John Thomas Howell
1943-7-3
18244
Marin
Sausalito
Comment
CAS-BOT-BC127490
Agrostis capillaris
John Thomas Howell
1942-7-12
s.n.
Marin
Cascade Canyon, Mill Valley.
Comment
CAS-BOT-BC126956
Agrostis exarata
John Thomas Howell
1955-7-17
30706
Trinity
Southwest of Peanut.
762
Comment
CAS-BOT-BC127003
Agrostis exarata
John Thomas Howell
1944-6-11
19598
Santa Cruz
1.5 miles north of Felton.
Comment
CAS-BOT-BC127042
Agrostis exarata
John Thomas Howell
1956-9-2
31834
San Francisco
San Francisco. Northeast end of Lake Merced.
Comment
CAS-BOT-BC127193
Agrostis exarata
John Thomas Howell
1943-6-13
s.n.
Marin
Sausalito Hills.
Comment
CAS-BOT-BC127211
Agrostis exarata
John Thomas Howell
1945-7-29
21342
Marin
Bolinas.
Comment
CAS-BOT-BC127237
Agrostis exarata
John Thomas Howell; Gordon H. True
1973-7-31
50021
Lassen
Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range.
1737
Comment
CAS-BOT-BC127271
Agrostis exarata
John Thomas Howell; Gordon H. True
1966-7-12
41805
Kern
Sierra Nevada. Kern Plateau. Bartolas Country 7.2 miles south of Cherry Hill and Cannell Meadow roads.
2164
Comment
UCD52435
Agrostis exarata
John Thomas Howell
1926-7-26
2126
Plumas
near Prattville.
1371
Comment
UCD52485
Agrostis exarata
John Thomas Howell; Gordon H. True
1973-7-31
50087
Plumas
Canadian Zone Forest, summit ridge of Thompson Peak, Diamond Range.
2194
Comment
CAS-BOT-BC139690
Agrostis gigantea
John Thomas Howell
1947-8-13
24066
Inyo
Big Pine Lakes Trail.
2895
Comment
CAS-BOT-BC139478
Agrostis hallii
John Thomas Howell
1943-6-13
s.n.
Marin
Sausalito.
Comment
SEINET199904
Agrostis hallii
John Howell
1943-7-3
Marin
Near Bootjack, Mt. Tamalpais
Comment
CAS-BOT-BC139183
Agrostis idahoensis
John Thomas Howell; Gordon H. True
1966-7-11
41723
Tulare
Sierra Nevada. Kern Plateau. Horse Meadow.
2255
Comment
CAS-BOT-BC139310
Agrostis idahoensis
John Thomas Howell
1946-7-14
22310
Inyo
Rock Creek Lake Basin. Mosquito Flat.
3139
Comment
UCD52986
Agrostis idahoensis
John Thomas Howell
1942-7-26
17220
Tulare
Mineral King.
Comment
GH341255
Agrostis microphylla
J. T. Howell
1946-5-12
21777
Unknown
South end of Carson Ridge, Marin County
Comment
CAS-BOT-BC139140
Agrostis oregonensis
John Thomas Howell
1947-7-22
23511
San Bernardino
San Bernardino Mountains. South Fork, Santa Ana River.
2377
Comment
CAS-BOT-BC138895
Agrostis pallens
John Thomas Howell
1951-7-17
27841
Tulare
Mineral King and Vicinity. White Chief Trail.
2834
Comment
UC1026508
Agrostis pallens
John Thomas Howell
1950-7-14
26846
Tulare
Bakeoven Meadows Sierra Nevada, South Fork of Kern River
2468
Comment
CAS-BOT-BC138762
Agrostis scabra
John Thomas Howell
1958-7-22
33771
Fresno
Sierra Nevada. Simpson Meadow, Middle Fork of the Kings River.
1828
Comment
CAS-BOT-BC138608
Agrostis stolonifera
John Thomas Howell
1957-8-5
32861
San Francisco
San Francisco. In Strybing Arboretum, Golden Gate Park.
Comment
RSA224292
Agrostis stolonifera
J. T. Howell
1956-10-28
31931
San Francisco
Mountain Lake, Presidio; San Francisco.
Comment
CAS-BOT-BC138535
Agrostis variabilis
John Thomas Howell
1947-8-6
23818
Inyo
Big Pine Lakes. Fourth Lake.
3291
Comment
CAS-BOT-BC48025
Ailanthus altissima
John Thomas Howell
1959-9-20
34627
Butte
Sierra Nevada - Foothills, east of Oroville
Comment
CAS-BOT-BC131911
Allium
John Thomas Howell
1955-6-15
30514
Butte
West Branch of North Fork of Feather River
182
Comment
CAS-BOT-BC131933
Allium
John Thomas Howell; R. C. Barneby
1954-5-12
29505
Mariposa
Near top of Bagby Grade
579
Comment
CAS-BOT-BC131971
Allium
John Thomas Howell; R. C. Barneby
1954-5-8
s.n.
Tulare
Tule River Valley 8.5 miles above Springville
624
Comment
SD45796
Allium burlewii
Darley F. Howe
1954-5-29
2368
Ventura
Mt. Pinos, ridge on north side of Mt. Pinos.
2591
Comment
SDSU11557
Allium campanulatum
D. F. Howe
1964-7-28
3885
Sierra
5.5 miles south of Glod Lake Lodge, Tahoe National Forest
1829
Comment
CAS-BOT-BC466722
Allium cratericola
John Thomas Howell
1962-7-11
38556
Kern
Northwest slope of Black Mt. Greenhorn Mountains
2133
Comment
CAS-BOT-BC469339
Allium fimbriatum var. fimbriatum
John Thomas Howell; Gordon H. True
1971-6-15
47716
Kern
0.5 mile south of Bodfish Gap on road to Havilah.
1097
Comment
SDSU11551
Allium fimbriatum var. mohavense
D. F Howe
1947-5-5
1531
Los Angeles
North side of San Gabriel Mts., LA.
Comment
SD112445
Allium haematochiton
Darley F. Howe
1967-4-6
4328
Santa Barbara
Figueroa Mountain.
Comment
CAS-BOT-BC472945
Allium monticola
John Thomas Howell
1947-7-18
23387 a
Los Angeles
Blue Ridge, San Gabriel Mts.
2590
Comment
CAS-BOT-BC132153
Allium tribracteatum
John Thomas Howell
1954-6-5
29934
Tuolumne
Near Dardanelle, Middle Fork Stanislaus River
1828
Comment
CAS-BOT-BC476786
Allium validum
John Thomas Howell
1946-7-14
22250
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC478003
Allium validum
John Thomas Howell
1949-8-7
26122
Tulare
Rock Creek
3169
Comment
SD113903
Allophyllum gilioides
Darley F. Howe
1950-4-28
2055
San Diego
South side of Cuyamaca Middle Peak.
1524
Comment
SD149126
Allophyllum gilioides
John Thomas Howell, G. H. True
1967-5-29
42389
Tulare
Kern Plateau, slopes west of Lamont Meadow.
1707
Comment
CAS-BOT-BC171349
Alnus incana subsp. tenuifolia
John Thomas Howell
1960-7-17
35501
Plumas
Drakesbad, Lassen Volcanic Park
1828
Comment
CAS-BOT-BC171436
Alnus rhombifolia
John Thomas Howell
1925-11-28
1591
Solano
Freen Creek near the falls
Comment
SD51348
Alnus rubra
Darley F. Howe
1961-7-28
3073
Marin
0.3 miles above Stinson Beach on road to Mount Tamalpais
149
Comment
SD43609
Alnus tenuifolia
Darley F. Howe
1948-5-22
1823
Placer
unknown
1705
Comment
SD50706
Alnus tenuifolia
Darley F. Howe
1959-8-3
2785
Plumas
30 miles north of Quincy
1370
Comment
CAS-BOT-BC138051
Alopecurus aequalis var. sonomensis
John Thomas Howell
1945-5-30
20899
Sonoma
Pitkin Marsh.
Comment
CAS-BOT-BC138017
Alopecurus geniculatus
John Thomas Howell
1948-7-24
24965
Fresno
Bullfrog Lake.
3240
Comment
CAS-BOT-BC138020
Alopecurus geniculatus
John Thomas Howell
1964-8-10
40921
Alpine
Sierra Nevada. Markleeville.
1676
Comment
UC905060
Alopecurus geniculatus
John Thomas Howell
1949-7-26
25779
Tulare
Whitney Meadows Sierra Nevada, Whitney Meadows
2956
Comment
UCD97069
Amaranthus arenicola
John Thomas Howell
1964-10-18
40962
Monterey
Road side at southern limit of King City.
Comment
SDSU6267
Ambrosia acanthicarpa
D. F. Howe
1976-10-8
4929
Inyo
6.4 miles from entranceto Inyo National Forest east of Big Pine.
1981
Comment
SD113175
Ambrosia salsola var. salsola
Darley F. Howe
1938-4-15
650
San Diego
Borrego Valley
Comment
A346785
Amelanchier alnifolia
J. T. Howell
1934-6-12
12040
Unknown
North side of Fandango Valley
Comment
A346797
Amelanchier alnifolia
J. T. Howell
1938-8-2
14010
Unknown
Near Brockway
Comment
CAS-BOT-BC142536
Amelanchier utahensis
John Thomas Howell
1945-6-20
21083
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC142928
Amelanchier utahensis
John Thomas Howell
1943-8-12
19296
Glenn
Plaskett Meadows
1828
Comment
A366154
Amorpha californica
J. T. Howell
1937-7-20
13149
Unknown
6 miles from Trinity Center on road to French Gulch
Comment
CAS-BOT-BC213998
Amsinckia
John Thomas Howell
1933-5-28
11365
Alameda
Strawberry Canyon, Berkeley Hills
Comment
GH424835
Amsinckia
J. T. Howell
1933-4-22
11017
Unknown
7 miles nw. of Hollister
Comment
CAS-BOT-BC214028
Amsinckia
John Thomas Howell
1933-4-22
11061
San Benito
Between Paicines and Pinnacles P.O.
Comment
CAS-BOT-BC222253
Amsinckia
John Thomas Howell
1934-6-16
12219
Lassen
Big Valley, 4 miles ne. of Bieber
Comment
CAS-BOT-BC222283
Amsinckia
John Thomas Howell
1934-3-26
11785
Sonoma
Southwestern base of Mt. Hood
Comment
CAS-BOT-BC222287
Amsinckia
John Thomas Howell
1934-3-25
11776
Sonoma
Lakeville
Comment
RSA0090956
Amsinckia eastwoodiae
J. T. Howell
1938-4-10
13756
San Joaquin
Hospital Canyon.
Comment
SD128708
Amsinckia menziesii
Darley F. Howe
1980-5-29
Inyo
1 mile west of Highway 395, 10 miles north of Lone Pine
1220
Comment
CAS-BOT-BC45100
Anaphalis margaritacea
John Thomas Howell
1925-9-22
1479
El Dorado
Emerald Bay, Lake Tahoe
Comment
SD113070
Anaphalis margaritacea
Darley F. Howe
1939-7-28
943
San Francisco
San Francisco Peninsula
Comment
SD112745
Anaphalis margaritacea
Darley F. Howe
1962-8-17
3458
Fresno
Tamarack Creek, 13 miles east of Shaver Lake on #168, Sierra National Forest
2165
Comment
CAS-BOT-BC45305
Ancistrocarphus filagineus
John Thomas Howell
1937-4-29
4088
Kern
Temblor Range, west of McKittrick
Comment
CAS-BOT-BC391869
Anemone grayi
John Thomas Howell; Gordon H. True
1970-5-27
46530
El Dorado
Blodgett Experimental Forest
1280
Comment
CAS-BOT-BC391997
Anemone oregana
John Thomas Howell
1963-6-3
39396
Plumas
Butterfly Valley
Comment
CAS-BOT-BC400389
Anemopsis californica
John Thomas Howell; Gordon H. True
1967-9-19
43851
Tulare
Flood-plain of Kern River South Fork, Kennedy Meadows Campground, Kern Plateau
1859
Comment
CAS-BOT-BC64770
Anisocoma acaulis
John Thomas Howell; Gordon H. True
1966-7-12
41852
Tulare
On Taylor Creek south of Taylor Meadow
2194
Comment
CAS-BOT-BC59206
Antennaria dimorpha
John Thomas Howell
1944-7-13
19754
Glenn
North of Black Butte
Comment
RSA584789
Antennaria dimorpha
J. T. Howell, Gordon H. True
1970-6-26
46834
Tulare
Kern Plateau, at True Meadow
2226
Comment
CAS-BOT-BC69106
Antennaria media
John Thomas Howell
1941-7-30
16536
Madera
Near Thousand Island Lake
Comment
CAS-BOT-BC79852
Antennaria microphylla
John Thomas Howell
1950-7-22
27215
Tulare
Olancha Peak
3657
Comment
CAS-BOT-BC137703
Anthoxanthum odoratum
John Thomas Howell
1956-7-29
31731
San Francisco
San Francisco. McLaren Park.
Comment
CAS-BOT-BC137707
Anthoxanthum odoratum
John Thomas Howell
1968-6-10
s.n.
Plumas
Sierra Nevada. Meadow at Quincy.
1036
Comment
SDSU10501
Antirrhinum multiflorum
D. F. Howe
1962-7-21
3332
Santa Barbara
10.6 miles S of Orcutt on #1.
305
Comment
CAS-BOT-BC457542
Aphanes occidentalis
J. T. Howell; Walter Knight; Irja Knight; G. H. True
1967-5-7
2228 D.
Plumas
Butterfly Botanical Area and Vicinity; open flat near Pond Reservoir.
1097
Comment
SD61027
Apocynum androsaemifolium
Darley F. Howe
1964-8-3
3928
Modoc
34 miles north of Alturas on #395.
1402
Comment
RSA224338
Aptenia cordifolia
J. T. Howell
1963-11-19
40409
Monterey
Near Russian church in Seaside
Comment
CAS-BOT-BC394978
Aquilegia formosa
John Thomas Howell
1939-8-8
15153
Siskiyou
Black Mt., Marble Mts.
Comment
CAS-BOT-BC394980
Aquilegia formosa
John Thomas Howell
1939-8-10
15278
Siskiyou
Sky High Valley, Marble Mts.
1828
Comment
CAS-BOT-BC395160
Aquilegia formosa
John Thomas Howell
1949-8-3
25972
Tulare
Rock Creek
3291
Comment
RSA0126139
Arabis divaricarpa
J. T. Howell
1944-8-16
20611
Tuolumne
Mono Pass Trail.
Comment
CAS-BOT-BC128663
Arbutus menziesii
John Thomas Howell
1930-10-25
5679
Monterey
Canyon of the Arroyo Seco River - Santa Lucia Mts.
Comment
RSA201279
Arceuthobium americanum
J. T. Howell
1959-9-22
34866
Plumas
Lassen Volcanic National Park. On Pinus Murrayana, Drakesbad.
1677
Comment
SD71013
Arceuthobium americanum
John Thomas Howell
1959-9-22
34866
Plumas
Drakesbad
1676
Comment
CAS-BOT-BC407676
Arceuthobium americanum
John Thomas Howell
1950-7-18
27038
Tulare
Bakeoven Meadow, S Fork of Kern River
2468
Comment
UCD101908
Arceuthobium americanum
John Thomas Howell
1969-9-13
46125
Sierra
North shore of Webber Lake, Sierra Nevada.
2064
Comment
CAS-BOT-BC409907
Arceuthobium campylopodum
John Thomas Howell
1958-8-2
34294
Fresno
Copper Creek Canyon trail
2286
Comment
UCD101986
Arceuthobium campylopodum
John Thomas Howell
1970-9-26
47488
Kern
Loraine, Sierra Nevada.
822
Comment
CAS-BOT-BC409942
Arceuthobium campylopodum
John Thomas Howell; Gordon H. True
1966-7-12
41821
Kern
rim of plateau just east of Fay Creek Canyon
2194
Comment
SD113285
Arceuthobium campylopodum
Darley F. Howe
1947-8-27
1726
San Bernardino
Johnson Grade, San Bernardino Mts.
Comment
A14999
Arctostaphylos bakeri
J. T. Howell
1933-4-2
10957
Unknown
Serpentine ridge, 2 miles east of Occidental.
Comment
CAS-BOT-BC23940
Arctostaphylos canescens subsp. canescens
John Thomas Howell
1943-8-8
19214
Tehama
Log Spring Ridge, 1.1 miles west of ranger station.
Comment
POM203044
Arctostaphylos canescens subsp. canescens
J. T. Howell
1934-3-3
11748
Sonoma
Between Fort Ross and Stewart's Point.
Comment
CAS-BOT-BC23885
Arctostaphylos canescens subsp. sonomensis
John Thomas Howell
1937-4-11
12894
Sonoma
Rincon Ridge NE of Santa Rosa
Comment
CAS-BOT-BC23888
Arctostaphylos canescens subsp. sonomensis
John Thomas Howell
1933-4-2
10942
Sonoma
Rincon Ridge near Santa Rosa
Comment
UC876539
Arctostaphylos canescens subsp. sonomensis
John Thomas Howell
1937-4-11
12894
Sonoma
ne Santa Rosa; Rincon Ridge
Comment
A350168
Arctostaphylos canescens var. sonomensis
J. T. Howell
1937-7-4
13079
Unknown
Rincon Ridge, ne. of Santa Rosa
Comment
CAS-BOT-BC25152
Arctostaphylos crustacea
John Thomas Howell
1953-2-1
28918
Santa Cruz
Sand hills about 1 mile NW of Scott Valley
Comment
GH350275
Arctostaphylos crustacea var. rosei
J. T. Howell
1934-3-9
11772
Unknown
Lake Merced, San Francisco
Comment
CAS-BOT-BC23388
Arctostaphylos glandulosa subsp. cushingiana
John Thomas Howell
1947-3-2
23037
Marin
Above Blythedale Canyon, east side of Mt. Tamalpais.
Comment
CAS-BOT-BC23394
Arctostaphylos glandulosa subsp. cushingiana
John Thomas Howell
1947-3-2
23036
Marin
Above Blythedale Canyon, east side of Mt. Tamalpais
Comment
CAS-BOT-BC24831
Arctostaphylos glandulosa subsp. cushingiana
John Thomas Howell
1954-2-28
29128
Marin
Lower part of Throckmorton Ridge near Matt Davis Trail, Mt. Tamalpais
Comment
CAS-BOT-BC24837
Arctostaphylos glandulosa subsp. cushingiana
John Thomas Howell
1933-3-19
10868
Marin
S. side of Mt. Tamalpais above Mill Valley.
Comment
CAS-BOT-BC24755
Arctostaphylos glandulosa subsp. glandulosa
John Thomas Howell
1931-9-27
8100
Mendocino
6 miles s of Point Arena.
Comment
CAS-BOT-BC24814
Arctostaphylos glandulosa subsp. glandulosa
John Thomas Howell
1931-6-18
6740
Del Norte
Smith River Canyon.
Comment
CAS-BOT-BC24686
Arctostaphylos glandulosa subsp. howellii
John Thomas Howell
1955-5-17
30161
Monterey
Summit ridge of Junipero Serra peak, Santa Lucia Mts.
1767
Comment
SD50782
Arctostaphylos glandulosa subsp. mollis
D. F. Howe
1959-4-19
2710
Santa Barbara
Summit of Mt. Figueroa, San Raphael Mountains.
1381
Comment
CAS-BOT-BC38970
Arctostaphylos manzanita subsp. elegans
John Thomas Howell
1976-4-29
51625
Lake
High Valley road e. of Clear Lake
1005
Comment
CAS-BOT-BC38718
Arctostaphylos manzanita subsp. manzanita
John Thomas Howell
1931-3-14
5775
Sonoma
Vine Hill district, 10 miles west of Santa Rosa
Comment
CAS-BOT-BC38732
Arctostaphylos manzanita subsp. manzanita
John Thomas Howell
1930-3-23
4565
Napa
Crater Country near Mt. St. Helena
Comment
CAS-BOT-BC38899
Arctostaphylos manzanita subsp. manzanita
John Thomas Howell
1954-5-18
29786
Amador
Bushy hills, 2 miles nne of Buena Vista
91
Comment
CAS-BOT-BC40160
Arctostaphylos montana subsp. montana
John Thomas Howell
1947-5-25
23200
Marin
Mt. Tamalpais, Simmons Trail
Comment
UCD52924
Arctostaphylos obispoensis
John Thomas Howell
1956-3-23
San Luis Obispo
On or near serpentine, 1 mile east of summit of Cambria-Adelaida road. ('Jack Mt.' acc. C.B. Hardham)
Comment
CAS-BOT-BC42090
Arctostaphylos patula
John Thomas Howell
1976-4-2
51579
Plumas
Near Spring Garden
1219
Comment
SD67302
Arctostaphylos pilosula
Darley F. Howe
1967-4-8
4331
San Luis Obispo
La Panza Range, 4.5 mi. N by NE of Pozo
550
Comment
SDSU2819
Arctostaphylos pilosula
D. F. Howe
1967-4-8
4331
San Luis Obispo
4.5 miles north by northeast of Pozo.
549
Comment
CAS-BOT-BC44868
Arctostaphylos pumila
John Thomas Howell
1961-4-12
36482
Monterey
Seaside, Santa Lucia Mountains
Comment
SD67321
Arctostaphylos pumila
Darley F. Howe
1967-4-12
4344
Monterey
Seaside, La Salle Street, across from Terrace Elementary School
Comment
CAS-BOT-BC43838
Arctostaphylos stanfordiana
John Thomas Howell
1930-3-23
4559
Napa
About 1 mile se. of Mt. St. Helena Inn. Near Mt. St. Helena.
Comment
CAS-BOT-BC47343
Arctostaphylos stanfordiana
John Thomas Howell
1931-3-14
5764
Sonoma
Rincon Ridge near Santa Rosa.
Comment
RSA381139
Arctostaphylos truei
J. T. Howell
1975-6-15
51109
Butte
Skyway near Billie Road, Paradise.
609
Comment
UCD51940
Arctostaphylos truei
John Thomas Howell
1976-4-2
51572
Plumas
Injun Jim Campground, North Fork Feather River, Plumas County.
609
Comment
UCD51950
Arctostaphylos truei
John Thomas Howell
1975-6-15
51093
Butte
In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County.
Comment
UCD52644
Arctostaphylos viscida
John Thomas Howell
1959-9-21
34776
Plumas
North Fork Feather River near Belden
701
Comment
CAS-BOT-BC47073
Arctostaphylos viscida subsp. viscida
John Thomas Howell
1976-4-2
51578
Plumas
2 mi. nw. of Spring Garden.
1173
Comment
NY342420
Arenaria rosei
J. T. Howell
1955-6-13
30370
Trinity
Peanut
762.0
Comment
CAS-BOT-BC207126
Argythamnia lanceolata
John Thomas Howell
Jan. 29 1 (rest of year torn off sheet)
3298
Riverside
Painted Canyon, Colorado Desert
Comment
CAS-BOT-BC137614
Aristida adscensionis
John Thomas Howell
1960-3-22
35142
San Luis Obispo
San Luis Obispo. Santa Lucia Mountains. Cuesta Park.
Comment
CAS-BOT-BC137575
Aristida oligantha
John Thomas Howell
1954-9-5
30050
Amador
3 miles from Pine Grove on road to Jackson.
Comment
SD113737
Armeria maritima subsp. californica
Darley F. Howe
1948-5-17
1830
San Luis Obispo
Coast of San Luis Obispo.
Comment
CAS-BOT-BC82108
Arnica chamissonis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-1
54609
Alpine
Ebbetts Pass just east of summit
2633
Comment
CAS-BOT-BC82643
Arnica lanceolata subsp. prima
John Thomas Howell
1942-7-24
17066
Tulare
Mineral King
Comment
SD81036
Arnica longifolia
Darley F. Howe
1971-8-25
4773
Inyo
Near South Lake, southwest of Bishop
3050
Comment
RSA94852
Arnica longifolia subsp. myriadenia
J. T. Howell
1926-7-30
2157
Plumas
Near Prattville on Lake Almonor
Comment
UCD56025
Arrhenatherum elatius
John Thomas Howell
1963-7-10
39724
Alpine
Sierra Nevada. Markleeville.
1676
Comment
CAS-BOT-BC146282
Arrhenatherum elatius var. elatius
John Thomas Howell
1947-6-4
23224
Marin
San Geronimo.
Comment
CAS-BOT-BC84978
Artemisia arbuscula subsp. arbuscula
John Thomas Howell
1939-8-8
15167
Siskiyou
Marble Mts., Black Mt.
Comment
POM180611
Artemisia biennis
J. T. Howell
1930-10-26
5710
Monterey
Sandy flood-plain of the Salinas River at the Soledad Bridge
Comment
CAS-BOT-BC90411
Artemisia douglasiana
John Thomas Howell
1961-9-23
36865
Plumas
Indian Valley
1082
Comment
CAS-BOT-BC93959
Artemisia douglasiana
John Thomas Howell
1956-12-2
31964
Stanislaus
Bank of slough of San Joaquin River east of Vernalis on road to Modesto
Comment
SD128728
Artemisia dracunculus
Darley F. Howe
1980-9-26
Inyo
Highway 168, Inyo Mountains
1920
Comment
UC710446
Artemisia ludoviciana subsp. incompta
John Thomas Howell
15146
Siskiyou
Marble Mts., Black Mt.
Comment
CAS-BOT-BC97138
Artemisia rothrockii
John Thomas Howell
1945-9-24
21497
Tuolumne
Soda Springs, Tuolumne Meadows
Comment
CAS-BOT-BC93545
Artemisia tridentata subsp. tridentata
John Thomas Howell
1963-8-20
40156
Inyo
Sierra Nevada - Whitney Portal
2545
Comment
CAS-BOT-BC400671
Asarum hartwegii
John Thomas Howell
1923-6-27
96
Mariposa
Wawona
1219
Comment
SEINET10895306
Asclepias eriocarpa
John Thomas Howell, Gordon H. True
1967-8-9
Howell 43616
Tulare
6 mi N of Chimney Meadow, Kern Plateau
2103
Comment
SD113029
Asclepias fascicularis
Darley F. Howe
1936-8-8
413
San Diego
Cuyamaca Mountains.
Comment
CAS-BOT-BC222858
Asclepias solanoana
John Thomas Howell
1955-7-17
30697
Trinity
Southwest of Peanut
762
Comment
CAS-BOT-BC222863
Asclepias solanoana
John Thomas Howell
1955-6-13
30371
Trinity
Peanut
762
Comment
CAS-BOT-BC478841
Asparagus officinalis
John Thomas Howell
1967-10-19
44018
San Joaquin
Caswell Memorial State Park
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-BC65859
Aspidotis carlotta-halliae
John Thomas Howell
1967-3-5
42037
Marin
near Rattlesnake Camp, Mt. Tamalpais
Comment
POM259366
Aster foliaceus var. parryi
J. T. Howell
1939-8-2
14877
Siskiyou
Spirit Lake, Marble Mountains.
1829
Comment
RSA415795
Astragalus claranus
J. T. Howell
1931-4-19
6431
Sonoma
12.5 miles from St. Helena on Spring Mountain Road to Santa Rosa.
Comment Read comments Nov 17 2007
CAS-BOT-BC177701
Astragalus congdonii
John Thomas Howell; Gordon H. True
1970-6-10
46577
Tulare
Below Potwisha. Sequoia Park
579
Comment
CAS-BOT-BC182065
Astragalus filipes
John Thomas Howell
1934-6-12
11986
Modoc
Surprise Station.
Comment
UC864338
Astragalus kentrophyta var. danaus
John Thomas Howell
1938-8-11
14540
Tuolumne
Mt. Dana
3657
Comment
SD62116
Astragalus minthorniae var. villosus
Darley F. Howe
1965-5-15
4035
San Bernardino
28 miles north of Goffs
1370
Comment
CAS-BOT-BC177964
Astragalus nuttallii var. virgatus
John Thomas Howell
1956-9-9
31856
San Francisco
SE end of Lake Merced, San Francisco
Comment
SD81292
Astragalus pachypus var. jaegeri
D. F. Howe
1969-5-15
1591
Riverside
Near Dripping Springs Campground (mak 10/07)
456
Comment
RSA143770
Astragalus whitneyi var. lenophyllus
J. T. Howell
1943-7-20
s.n.
Nevada
Castle Peak
Comment
CAS-BOT-BC198679
Astragalus whitneyi var. whitneyi
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-28
53143
Alpine
Western slope of Ebbetts Peak - Sierra Nevada
2773
Comment
CAS-BOT-BC17400
Athysanus pusillus
John Thomas Howell; Gordon H. True; Roberta Shockey
1978-4-5
52754
Calaveras
Sierra Nevada. Camp Nine Road northeast of Vallecito.
609
Comment
CAS-BOT-BC17605
Athysanus pusillus
John Thomas Howell; Gordon H. True
1967-5-30
42435
Tulare
Sierra Nevada. Kern Plateau. Slopes west of Lamont Meadow.
1706
Comment
CAS-BOT-BC17608
Athysanus pusillus
John Thomas Howell
1951-6-28
27670
Plumas
Sierra Nevada. Jamison Creek.
1584
Comment
CAS-BOT-BC168626
Atriplex
John Thomas Howell; Gordon H. True
1967-7-6
43236
Tulare
About 4.5 miles east-northeast of Pixley. Near southwest corner of area
83
Comment
CAS-BOT-BC168639
Atriplex
John Thomas Howell; Gordon H. True
1967-8-10
43732 A
Tulare
From N 1/3 of area. About 4.5 miles east-northeast of Pixley
83
Comment
UCR88042
Atriplex argentea subsp. expansa
J. T. Howell
1967-11-3
s.n.
Tulare
Vernal pool natural area in Valley Grassland, about 4.5 miles east-northeast of Pixley
84
Comment
UCD97294
Atriplex canescens
John Thomas Howell; Gordon H. True
1971-6-16
47882
Kern
along Kelso Creek 7 miles south of Weldon on road to Kelso Valley.
914
Comment
CAS-BOT-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
SDSU5532
Atriplex confertifolia
D. F. Howe
1959-4-14
2695
Inyo
12 1/2 mi. north of Shoshone on #127.
Comment
SD112473
Atriplex coronata var. notatior
Darley F. Howe
1949-7-2
2076
San Diego
Chula Vista
Comment
CAS-BOT-BC172649
Atriplex coulteri
John Thomas Howell
1931-4-11
6267
Santa Barbara
Valley Anchorage, Santa Cruz Island
Comment
CAS-BOT-BC168448
Atriplex parishii var. persistens
John Thomas Howell
1967-11-4
44072
Tulare
About 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC168460
Atriplex parishii var. subtilis
John Thomas Howell; Gordon H. True
1967-5-31
42515
Tulare
About 4 1/2 miles east-northeast of Pixley. From S 1/3 of area
83
Comment
CAS-BOT-BC168477
Atriplex parishii var. subtilis
John Thomas Howell; Gordon H. True
1967-9-21
44006
Tulare
About 4.5 miles east-northeast of Pixley. N 1/3 of area
83
Comment
LA204693
Atriplex pusilla
John Thomas Howell;
1938-8-8
14381
Mono
Long Valley
Comment
RSA252
Atriplex serenana
J. T. Howell
1927-7-22
459
Orange
North of Botany Garden, Rancho Santa Ana.
274
Comment
SD112536
Atriplex triangularis
Darley F. Howe
1938-8-2
730
Los Angeles
Coast south of Long Beach.
Comment
CAS-BOT-BC146061
Avena barbata
John Thomas Howell
1963-5-18
39299
Monterey
2.5 miles south of Aromas.
60
Comment
CAS-BOT-BC145959
Avena fatua
John Thomas Howell
1956-4-25
31293
San Mateo
Skyline Boulevard just north of Crystal Springs Lake Dam.
Comment
POM350406
Baccharis pilularis
J. T. Howell
1932-10-8
10802
Napa
Napa River levee at Cuttings Wharf
Comment
RSA215927
Baccharis pilularis
J. T. Howell
1957-6-11
32589
San Francisco
North slope of Lone Mountain
Comment Read comments Dec 21 2011
CAS-BOT-BC99728
Baccharis salicifolia
John Thomas Howell; Gordon H. True
1971-6-15
47741
Kern
On road from Havilah to Walker Basin
1219
Comment
CAS-BOT-BC100018
Balsamorhiza deltoidea
John Thomas Howell
1962-5-23
37404
Kern
Kern River Canyon near Miracle Hot Springs
731
Comment
SD88374
Barbarea orthoceras
Darley F. Howe
1972-4-27
Marin
Bolinas Ridge
Comment
CAS-BOT-BC413095
Bistorta bistortoides
John Thomas Howell; Gordon H. True
1966-7-11
41619
Tulare
Poison Meadow, Kern Plateau
2286
Comment
CAS-BOT-BC127951
Blepharipappus scaber
John Thomas Howell
1934-6-10
11894
Lassen
Horse Lake
Comment
CAS-BOT-BC128044
Blepharipappus scaber
John Thomas Howell
1934-6-10
11894
Lassen
Horse Lake
Comment
CAS-BOT-BC15793
Boechera acutina
John Thomas Howell
1939-8-9
15193
Siskiyou
Marble Mountains. Sky High Valley.
1828
Comment
CAS-BOT-BC15875
Boechera arcuata
John Thomas Howell
1964-4-27
40515
Mariposa
Sierra Nevada. El Portal.
640
Comment
CAS-BOT-BC16041
Boechera breweri subsp. shastaensis
John Thomas Howell
1951-6-27
27639
Plumas
Sierra Nevada. Jamison Creek.
1828
Comment
CAS-BOT-BC16047
Boechera breweri subsp. shastaensis
John Thomas Howell
1937-7-22
13265
Siskiyou
South Fork of Salmon River near Big Flat.
1524
Comment
CAS-BOT-BC16210
Boechera depauperata
John Thomas Howell
1947-8-10
23971
Inyo
Big Pines Lakes. Near Sam Mack Lake.
3657
Comment
CAS-BOT-BC13965
Boechera lemmonii
John Thomas Howell
1948-7-18
25097
Tulare
Center Basin.
3657
Comment
CAS-BOT-BC13968
Boechera lemmonii
John Thomas Howell
1949-7-23
25653
Tulare
Soldier Lake.
3352
Comment
CAS-BOT-BC13987
Boechera lemmonii
John Thomas Howell
1944-8-12
20369
Tuolumne
Gaylor Lakes.
3291
Comment
CAS-BOT-BC14255
Boechera pinetorum
John Thomas Howell; Gordon H. True
1973-7-31
50131
Plumas
Sierra Nevada. Diamond Range. On road from Janesville to Thompson Peak.
1981
Comment
CAS-BOT-BC14432
Boechera platysperma
John Thomas Howell
1942-7-24
17059
Tulare
Mineral King.
Comment
CAS-BOT-BC14436
Boechera platysperma
John Thomas Howell; Gordon H. True
1967-8-7
43398
Tulare
Sierra Nevada. Kern Plateau. About 3 miles northwest of Beach Meadow.
2499
Comment
CAS-BOT-BC410926
Boechera platysperma
John Thomas Howell; Gordon H. True
1971-7-13
48343
Tulare
Sierra Nevada, Kern Plateau. Northeast end of Big Meadow on N. Martin Pass Trail
2499
Comment
CAS-BOT-BC14596
Boechera pulchra
John Thomas Howell; Gordon H. True
1967-7-5
43065
Tulare
Sierra Nevada. Kern Plateau. 6.4 miles north of Chiimney Meadow.
2225
Comment
CAS-BOT-BC14702
Boechera rectissima
John Thomas Howell; Gordon H. True
1967-6-12
42585
Plumas
Sierra Nevada. North side of American Valley near Quincy.
1036
Comment
CAS-BOT-BC25277
Boechera repanda
John Thomas Howell
1962-7-11
38546
Kern
Sierra Nevada. Greenhorn Mountains. Black Mountain, northwest slope.
2133
Comment
CAS-BOT-BC25492
Boechera retrofracta
John Thomas Howell
1946-7-14
22359
Inyo
Rock Creek Lake Basin. Mosquito Flat.
3139
Comment
CAS-BOT-BC25515
Boechera retrofracta
John Thomas Howell
1938-8-10
14462
Madera
Near Devil's Postpile.
Comment
CAS-BOT-BC25518
Boechera retrofracta
John Thomas Howell
1938-8-10
14462
Madera
Near Devil's Postpile.
Comment
CAS-BOT-BC25532
Boechera retrofracta
John Thomas Howell
1934-6-30
12267
Modoc
Duncan Horse Camp.
Comment
CAS-BOT-BC25544
Boechera retrofracta
John Thomas Howell
1938-8-10
14488
Mono
Minaret Summit.
Comment
CAS-BOT-BC25513
Boechera retrofracta
John Thomas Howell; Gordon H. True
1934-7-19
8852
Madera
Meadow between Satcher Lake and Devil's Postpile.
2316
Comment
CAS-BOT-BC25971
Boechera xylopoda
John Thomas Howell; Gordon H. True
1968-5-13
44315 A
Kern
Sierra Nevada. Kern Plateau. Cherry Hill Road, Brush Creek Canyon.
1584
Comment
SD45779
Boechera xylopoda
Darley F. Howe
1954-5-30
Ventura
Ridge between Lockwood Valley and Piru Creek.
2135
Comment
SD44067
Boerhavia intermedia
Darley F. Howe
1950-10-1
2041
San Diego
Sentenac Canyon
Comment
RSA31366
Boisduvalia stricta
J. T. Howell
1942-6-12
16984
Marin
Carson Ridge
Comment
SD112184
Bothriochloa barbinodis
Darley F. Howe
1941-7-11
1184
San Diego
Dry hillside, about one mile east of Sunnyside.
Comment
SD44978
Boykinia occidentalis
Darley F. Howe
1952-6-22
2241
Monterey
Santa Lucia Mts.
456
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-BC29995
Brassica juncea
John Thomas Howell
1956-7-15
31679
San Francisco
San Francisco. Waterfront Street near Mission Rock Terminal.
Comment
CAS-BOT-BC106232
Brickellia californica
John Thomas Howell
1959-9-21
34774
Plumas
Dry rocky river bench, N. Fk. Feather River near Belden
701
Comment
SDSU6409
Brickellia desertorum
D. F. Howe
1970-9-17
4706
San Bernardino
South side of Clark Mt.
1890
Comment
CAS-BOT-BC127783
Brickellia grandiflora
John Thomas Howell
1942-7-27
17310
Tulare
Cliff Creek between Deer Creek and Pinto Lake
Comment
CAS-BOT-BC127858
Brickellia grandiflora
John Thomas Howell
1939-8-4
15044
Siskiyou
Marble Mts., Marble Rim
1889
Comment
CAS-BOT-BC127678
Brickellia greenei
John Thomas Howell
1959-9-26
35089 A
Butte
On serpentine at Pulga Bridge, Feather River Canyon
417
Comment
JEPS58967
Brickellia microphylla var. microphylla
John Thomas Howell
1962-9-25
38880
Kern
3 mi n Kernville; Sierra Nevada
822
Comment
SEINET10570602
Brodiaea capitata
Howery
HOWERY s.n. 1912
Los Angeles
Claremont
Comment
CAS-BOT-BC144190
Bromus arenarius
John Thomas Howell
1962-5-20
37122
Kern
Sierra Nevada. Kernville.
807
Comment
SEINET7296685
Bromus arenarius
John Thomas Howell
1958-1
34222
Fresno
On zigzags of Copper Creek Canyon trail.
1676
Comment
RSA120970
Bromus arizonicus
J. T. Howell
1956-3-25
31196
Monterey
Salina Valley, 6.5 miles from King City on Arroyo Seco Road
Comment
CAS-BOT-BC149251
Bromus carinatus var. carinatus
John Thomas Howell
1955-5-20
30210
Monterey
Soledad.
Comment
CAS-BOT-BC149590
Bromus carinatus var. carinatus
John Thomas Howell
1945-6-19
21046
Lake
Sawmill Flat. Bartlett Mountain.
1219
Comment
CAS-BOT-BC148414
Bromus carinatus var. marginatus
John Thomas Howell
1944-8-5
19956
Tuolumne
Tuolumne Meadows. Near Parsons Lodge.
Comment
CAS-BOT-BC148685
Bromus carinatus var. marginatus
John Thomas Howell
1943-7-14
18326
Nevada
West side of Donner Pass near Norden.
2133
Comment
CAS-BOT-BC148909
Bromus carinatus var. marginatus
John Thomas Howell
1948-5-31
24326
Marin
Devils Gulch near Camp Taylor.
Comment
CAS-BOT-BC156211
Bromus catharticus
John Thomas Howell
1953-5-8
28955
Monterey
Carmel.
Comment
CAS-BOT-BC156237
Bromus catharticus
John Thomas Howell
1962-5-21
37142
Kern
Sierra Nevada. Kernville.
807
Comment
CAS-BOT-BC156240
Bromus catharticus
John Thomas Howell
1950-7-11
26647
Kern
Mojave.
Comment
CAS-BOT-BC156268
Bromus catharticus
John Thomas Howell
1958-5-24
33292
Inyo
Sierra Nevada. Whitney Portal Road.
2346
Comment
CAS-BOT-BC156283
Bromus catharticus
John Thomas Howell; Gordon H. True
1968-6-9
44512
Placer
Sierra Nevada. Alta.
1066
Comment
RSA121040
Bromus catharticus
J. T. Howell
1956-3-10
30919
Ventura
Along street, Thompson Blvd. and Chrisman Ave., Ventura.
Comment
UCD58427
Bromus ciliatus
John Thomas Howell
1958-7-24
33895
Fresno
Sierra Nevada. Simpson Meadow. Middle Fork of the Kings River.
1828
Comment
CAS-BOT-BC155645
Bromus diandrus
John Thomas Howell; Gordon H. True
1968-5-15
44473
Tulare
About 4.5 miles east-northeast of Pixley.
83
Comment
RSA44
Bromus diandrus
J. T. Howell
1927-6-9
67
Orange
Botany Garden, Rancho Santa Ana.
152
Comment
CAS-BOT-BC155036
Bromus hordeaceus
John Thomas Howell
1955-5-19
30199
Monterey
Avila Ranch. Santa Lucia Mountains west of King City.
457
Comment
CAS-BOT-BC155195
Bromus hordeaceus
John Thomas Howell
1956-5-26
31455
Santa Clara
Mount Hamilton. Summit Ridge.
Comment
CAS-BOT-BC155407
Bromus hordeaceus
John Thomas Howell
1962-5-23
37403
Kern
Sierra Nevada. Kern River Canyon near Miracle Hot Springs.
731
Comment
SD112426
Bromus hordeaceus
Darley F. Howe
1940-4-14
985
San Diego
Roadside near Otay.
Comment
UCD58854
Bromus inermis
John Thomas Howell; Gordon H. True
1973-8-1
50221
Lassen
Sierra Nevada. East slope of Diamond Range south of Susanville.
2164
Comment
CAS-BOT-BC155344
Bromus japonicus
John Thomas Howell
1954-6-6
29973
Tuolumne
Sierra Nevada. Twain Harte.
1127
Comment
CAS-BOT-BC162365
Bromus madritensis
John Thomas Howell
1967-6-22
42622
Butte
Sierra Nevada. Magalia.
701
Comment
RSA126123
Bromus madritensis
J. T. Howell
1952-5-20
28315
San Francisco
Golden Gate Park, near 8th Av. and Fulton St., San Francisco
Comment
CAS-BOT-BC162252
Bromus maritimus
John Thomas Howell
1946-6-30
22147
Marin
Rodeo Lagoon.
Comment
CAS-BOT-BC162155
Bromus orcuttianus
John Thomas Howell
1973-7-9
49722
Plumas
Sierra Nevada. Round Valley.
1371
Comment
CAS-BOT-BC161444
Bromus tectorum
John Thomas Howell
1958-5-21
33048
Kern
Sierra Nevada. Kern River Canyon near Bodfish.
762
Comment
CAS-BOT-BC185456
Calamagrostis canadensis
John Thomas Howell
1946-8-30
22912
El Dorado
Upper Angora Lake.
2286
Comment
CAS-BOT-BC185233
Calamagrostis koelerioides
John Thomas Howell
1949-6-26
25352 A
Marin
Mount Tamalpais. Firetrail north of East Peak.
Comment
CAS-BOT-BC185193
Calamagrostis muiriana
John Thomas Howell
1944-8-12
20372
Tuolumne
Gaylor Lakes.
3291
Comment
CAS-BOT-BC185211
Calamagrostis muiriana
John Thomas Howell
1940-8-8
16048
Tulare
Between Reflection Lake and Harrison Pass.
Comment
UCD57453
Calamagrostis muiriana
John Thomas Howell
1942-7-29
17379
Tulare
Little Five Lakes Basin.
Comment
SD56821
Calandrinia breweri
Darley F. Howe
1963-5-19
3497
San Luis Obispo
Hillside south of Morro Bay
Comment
CAS-BOT-BC438356
Calandrinia ciliata
John Thomas Howell
1978-4-17
52844
Butte
Table Mountain
381
Comment
SD214616
Calandrinia ciliata
Darley F. Howe
Mar 1915
30
Los Angeles
Claremont
Comment
CAS-BOT-BC273246
Calendula arvensis
John Thomas Howell
1954-4-1
29138
Sonoma
Along highway just east of Shellville
Comment
CAS-BOT-BC85677
Calocedrus decurrens
John Thomas Howell; Gordon H. True
1968-5-13
44301
Tulare
Sierra Nevada, Kern Plateau - cherry Hill road, Poison Meadow Creek Canyon
2255
Comment
SD88413
Calochortus amabilis
Darley F. Howe
1972-4-25
Sonoma
Trinity Road, Mount Hood Range.
121
Comment
SD53281
Calochortus amoenus
Darley F. Howe
1962-5-15
3234
Fresno
7 miles south of Shaver Lake on #168, Sierra National Forest.
1067
Comment
CAS-BOT-BC490203
Calochortus invenustus
John Thomas Howell
1950-7-15
26892
Tulare
Bakeoven Meadows, South Fork of the Kern River, Sierra Nevada
2468
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-BC491826
Calochortus leichtlinii
John Thomas Howell
1951-6-27
27560
Plumas
Johnsville
1584
Comment
SD73209
Calochortus luteus
Darley F. Howe
1969-6-11
Monterey
Huckleberry Hill, Monterey Peninsula.
Comment
SD62151
Calochortus nudus
Darley F. Howe
1965-5-21
Placer
Canyon on south side of north fork of American River, between Forest Hill and Yankee Jims.
914
Comment
SD41248
Calochortus plummerae
Darley F. Howe
1946-6-2
1405
San Bernardino
Cajon Pass.
Comment
SD112773
Calochortus weedii var. weedii
Darley F. Howe
1935-6-16
247
San Diego
Japatul
Comment
CAS-BOT-BC270796
Calycadenia pauciflora
John Thomas Howell
1930-8-24
5443
Lake
4 miles from Middletown on Adams Springs Road
Comment
GH414371
Calycadenia truncata subsp. microcephala
J. T. Howell
1943-5-10
18009
Unknown
5 miles west of Lakeport on road to Hopland
Comment
POM193974
Calycadenia truncata subsp. truncata
J. T. Howell
1929-10-20
4526
Alameda
Near summit of Cedar Mt.
Comment
CAS-BOT-BC275354
Calycadenia truncata var. truncata
John Thomas Howell
1930-10-12
5577
El Dorado
Near Coloma
Comment
CAS-BOT-BC275384
Calycadenia truncata var. truncata
John Thomas Howell
1959-9-26
35089
Butte
At Pulga Bridge, N Fork Feather River
417
Comment
GH414364
Calycadenia villosa
J. T. Howell
1930-10-24
5632
Unknown
Santa Lucia Mts.
Comment Read comments Nov 15 2020
SD81136
Calystegia longipes
Darley F. Howe
1971-6-22
4736
Inyo
0.8 mile west of entrance to Inyo National Forest, west of Big Pine.
1555
Comment
CAS-BOT-BC221302
Calystegia macrostegia subsp. intermedia
John Thomas Howell
1927-6-9
2462
Orange
Southern Puente Hills, in the Santa Ana Canon [Canyon]
152
Comment
CAS-BOT-BC224723
Calystegia purpurata subsp. saxicola
John Thomas Howell
1947-6-18
23285
Marin
North of Dillons Beach
Comment
CAS-BOT-BC224727
Calystegia purpurata subsp. saxicola
John Thomas Howell
1946-6-9
22013
Marin
Pierce Ranch, n. Pt. Reyes Peninsula
Comment
CAS-BOT-BC224741
Calystegia purpurata subsp. saxicola
John Thomas Howell
1930-6-8
5290
Sonoma
8.5 miles n. of Bodega Bay
Comment
CAS-BOT-BC436383
Calystegia subacaulis
John Thomas Howell
1933-5-28
11374
Alameda
Summit of Berkeley Hills at head of Strawberry Canyon
Comment
POM181149
Camissonia graciliflora
J. T. Howell
1931-3-22
5956
Monterey
Stone Canyon.
Comment
SD113976
Camissoniopsis pallida subsp. pallida
Darley F. Howe
1939-5-9
810
San Diego
Montezuma Valley
Comment
UCD66815
Campanula angustiflora
John Thomas Howell
1946-5-12
21818
Marin
Carson Country.
Comment
SDSU1313
Campanula scouleri
D. F. Howe
1972-7-6
4877
Siskiyou
1.3 miles south of Oregon state line on road to Happy Camp.
1646
Comment
RSA281427
Canbya candida
J. T. Howell
1948-4-25
24227
Kern
Between Kernville and Isabella.
Comment Read comments Apr 27 2011
CAS-BOT-BC37203
Capsella bursa-pastoris
John Thomas Howell
1943-8-12
19287
Glenn
Canyon of Snow Basin Creek.
Comment
CAS-BOT-BC37205
Capsella bursa-pastoris
John Thomas Howell
1967-4-30
42096
Tulare
About 4.5 miles east-northeast of Pixley. Across Road 160 from northwest corner of reserve.
83
Comment
RSA1442
Cardamine californica var. integrifolia
J. T. Howell
1929-2-11
1226
Orange
Claymine Canyon, Samta Ana Mts.
305
Comment
CAS-BOT-BC471264
Cardamine cordifolia
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50635
Plumas
Sierra Nevada. Headwaters of Indian Creek SE of Diamond Mt.
2164
Comment
CAS-BOT-BC37920
Cardamine oligosperma
John Thomas Howell
1964-4-28
40598
Mariposa
Sierra Nevada. 2 miles east of Morman Bar.
670
Comment
CAS-BOT-BC38094
Cardamine pachystigma
John Thomas Howell; Gordon H. True
1967-5-9
42217
Plumas
Sierra Nevada. Lewisia Rock, 3.5 miles southwest of Belden, Feather River Canyon.
609
Comment
SD88450
Carduus pycnocephalus subsp. pycnocephalus
Darley F. Howe
1972-6-23
Monterey
4.4 miles north of Gorda.
Comment
CAS-BOT-BC18283
Carex
John Thomas Howell
1962-7-10
38446
Kern
Sierra Nevada. Greenhorn Mountains, 1.5 miles south of Summit.
1950
Comment
CAS-BOT-BC18514
Carex abrupta
John Thomas Howell
1948-7-29
25150
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows.
3048
Comment
CAS-BOT-BC18537
Carex abrupta
John Thomas Howell
1941-7-25
16456
Madera
Agnew Meadows.
Comment
CAS-BOT-BC18548
Carex abrupta
John Thomas Howell; Gordon H. True
1968-7-18
4427 A
Mono
Sierra Nevada. Basin at north end of Saddlebag Lake, head of Lee Vining Creek. Near boat landing.
3048
Comment
CAS-BOT-BC19762
Carex abrupta
John Thomas Howell
1939-8-3
15004
Siskiyou
Spirit Lake, Marble Mountains.
1828
Comment
CAS-BOT-BC19766
Carex abrupta
John Thomas Howell
1939-8-3
14962
Siskiyou
Marble Mountains. Spirit Lake.
1828
Comment
SD130373
Carex abrupta
John Thomas Howell
1958-8-14
34422
Madera
Near Isberg Lake
2987
Comment
CAS-BOT-BC17988
Carex aquatilis
John Thomas Howell
1941-7-25
16458
Madera
Agnew Meadows.
Comment
RSA43277
Carex aquatilis
J. T. Howell
1944-7-17
s.n.
Glenn
Plaskett Meadows.
1829
Comment
CAS-BOT-BC17976
Carex aquatilis
John Thomas Howell
1945-9-29
21526
El Dorado
South end of Echo Lake.
Comment
CAS-BOT-BC17994
Carex aquatilis
John Thomas Howell
1944-8-9
20198 A
Tuolumne
Tuolumne Meadows. Along river near Parsons Lodge.
Comment
CAS-BOT-BC18131
Carex athrostachya
John Thomas Howell
1939-8-8
15139
Siskiyou
Marble Mountains. Between Sky High Valley and Marble Valley.
Comment
CAS-BOT-BC19069
Carex aurea
John Thomas Howell
1958-7-25
33914
Fresno
Sierra Nevada. Middle Fork of the Kings River. Simpson Meadow.
1828
Comment
CAS-BOT-BC19375
Carex barbarae
John Thomas Howell
1980-10-6
53903
Stanislaus
Sierra Nevada. Stanislaus River near Ripon. At Caswell Memorial State Park.
15
Comment
RSA22104
Carex bolanderi
J. T. Howell
1938-7-17
13979
Solano
Green Valley Falls.
Comment
CAS-BOT-BC19643
Carex brainerdii
John Thomas Howell
1960-8-19
36174
Shasta
Lassen Volcanic National Park. Summit Ridge, Brokeoff Mountain.
2773
Comment
CAS-BOT-BC19657
Carex brainerdii
John Thomas Howell
1939-8-3
15008
Siskiyou
Marble Mountains. Spirit Lake.
1828
Comment
SEINET10380202
Carex brainerdii
John Thomas Howell
1960-6-6
35361
Fresno
Sierra Nevada, Kings Canyon 1.5 miles west of Cedar Grove
1372
Comment
CAS-BOT-BC34033
Carex brevicaulis
John Thomas Howell
1946-4-14
21628
Marin
Near Dillons Beach.
Comment
CAS-BOT-BC34038
Carex brevicaulis
John Thomas Howell
1969-4-20
45515
Marin
Point Reyes National Seashore. Higher slopes of Mount Wittenberg.
Comment
CAS-BOT-BC34053
Carex brevicaulis
John Thomas Howell
1957-4-27
32025
Monterey
Prunedale.
Comment
RSA0079899
Carex brevicaulis
John Thomas Howell
1938-4-12
13766
San Francisco
Lake Merced, San Francisco.
Comment
UC905037
Carex breweri
John Thomas Howell
1945-9-27
21518
Tuolumne
Mount Dana Sierra Nevada
3505
Comment
RSA52096
Carex buxbaumii
J. T. Howell
1945-7-18
21327
Sonoma
Pitkin Marsh
Comment
CAS-BOT-BC34362
Carex congdonii
John Thomas Howell
1949-8-8
26153
Tulare
Sierra Nevada. Above Sky Blue Lake.
3657
Comment
CAS-BOT-BC34393
Carex cusickii
John Thomas Howell
1938-6-5
13902
Marin
Rock Spring, Mt. Tamalpais.
Comment
CAS-BOT-BC34430
Carex davyi
John Thomas Howell
1946-8-31
22954
El Dorado
Northeast of Gilmore Lake.
2682
Comment
CAS-BOT-BC34884
Carex deflexa var. boottii
John Thomas Howell
1937-7-24
13430
Siskiyou
Caribou Basin, Salmon-Trinity Alps.
2286
Comment
UCD140244
Carex deflexa var. boottii
John Thomas Howell
1961-6-20
36553
Shasta
Lassen Volcanic National Park, Dersch Meadows.
1981
Comment
CAS-BOT-BC18976
Carex densa
John Thomas Howell
1938-7-3
13948
Sonoma
Stony Point.
Comment
UC904992
Carex densa
John Thomas Howell
1945-5-6
Marin
San Rafael, near Dominican College
Comment
SEINET8139110
Carex densa
J. T. Howell, J. W. Stacey
1935-1
12659
Unknown
Comment
POM248596
Carex dudleyi
J. T. Howell
1938-7-3
13948
Sonoma
Stony Point.
Comment
CAS-BOT-BC20075
Carex echinata
John Thomas Howell
1948-7-22
24863
Fresno
Bubbs Creek Canyon in vicenity of Vidette Meadows.
3048
Comment
CAS-BOT-BC19897
Carex echinata subsp. phyllomanica
John Thomas Howell
1945-5-30
20892
Sonoma
Pitkin Marsh.
Comment
CAS-BOT-BC20028
Carex feta
John Thomas Howell
1976-8-13
52249
Mariposa
Sierra Nevada. Yosemite Valley. Near Yosemite Lodge.
1219
Comment
CAS-BOT-BC21170
Carex fissuricola
John Thomas Howell
1948-7-23
24951
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows.
3048
Comment
CAS-BOT-BC20691
Carex fracta
John Thomas Howell
1960-7-20
35710
Plumas
Lassen Volcanic National Park. Drakesbad.
1828
Comment
CAS-BOT-BC20697
Carex fracta
John Thomas Howell
1951-6-28
27649
Plumas
Sierra Nevada. Johnsville.
1584
Comment
CAS-BOT-BC21300
Carex fracta
John Thomas Howell
1945-6-19
21013
Lake
Bartlett Mountain. Sawmill Flat.
1219
Comment
RSA201272
Carex fracta
J. T. Howell
1960-7-19
35676
Plumas
Drakesbad.
1677
Comment
CAS-BOT-BC20851
Carex globosa
John Thomas Howell
1941-4-5
16157
Napa
Franz Valley.
Comment
RSA20488
Carex globosa
J. T. Howell
1937-5-23
13005
San Francisco
Presidio, San Francisco.
Comment
SEINET7847007
Carex globosa
J. T. Howell
1944-4-2
19368 A
Marin
SE of Laurel Del. Mount Tamalpais
Comment
CAS-BOT-BC28374
Carex gracilior
John Thomas Howell
1930-6-8
5241
Sonoma
Bodega Road, 3 mi I of Valley Ford.
Comment
CAS-BOT-BC21878
Carex harfordii
John Thomas Howell
1944-6-10
19579
Santa Cruz
1.5 miles north of Felton.
Comment
CAS-BOT-BC22126
Carex harfordii
John Thomas Howell; J. W. Stacey
1936-6-7
12643
Marin
Ledum Swamp on road to Point Reyes.
Comment
SD60945
Carex heteroneura
D. F. Howe
1964-7-19
Fresno
Sierra National Forest; Badger Flat east of Huntington Lake
2438
Comment
UC710456
Carex heteroneura var. epapillosa
John Thomas Howell
1944-8-7
20055
Tuolumne
Tuolumne Meadows
Comment
UC1026408
Carex hirtissima
John Thomas Howell
1954-6-7
29988
Tuolumne
In Transition Zone Forest, Twain Harte.
Comment
CAS-BOT-BC17151
Carex illota
John Thomas Howell
1941-8-3
16743
Madera
Near Garnett Lake.
2956
Comment
CAS-BOT-BC28056
Carex illota
John Thomas Howell
1944-8-8
20115
Tuolumne
Elizabeth Lake.
Comment
CAS-BOT-BC7835
Carex incurviformis
John Thomas Howell
1944-8-15
20561
Tuolumne
Mt. Conness.
3749
Comment
CAS-BOT-BC7657
Carex integra
John Thomas Howell
1937-7-22
13253
Siskiyou
South Fork of Salmon River near Big Flat.
1524
Comment
CAS-BOT-BC35499
Carex jonesii
John Thomas Howell
1949-7-19
25478
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC35454
Carex jonesii
John Thomas Howell; Gordon H. True
1966-7-11
41627 A
Tulare
Kern Plateau, Poison Meadow, banks of Poison Meadow Creek
2286
Comment
CAS-BOT-BC31098
Carex leavenworthii
John Thomas Howell
1946-6-8
21990
Alameda
Berkeley Tennis Club
Comment
UC1147785
Carex lemmonii
J. T. Howell and J. W. Stacey
1937-6-6
13042
Sonoma
Pitkin Marsh; ; Pitkin Marsh, Sonoma Co.
Comment
SD56703
Carex lenticularis var. lipocarpa
Darley F. Howe
Aug 1963
Del Norte
Siskiyou National Forest; Sanger Lake; 9.7 miles south of California- Oregon line.
1524
Comment
CAS-BOT-BC31401
Carex leporinella
John Thomas Howell
1958-7-30
34108
Fresno
West of Simpson Meadow, Middle fork of the Kings River.
1813
Comment
CAS-BOT-BC31671
Carex luzulina var. ablata
John Thomas Howell
1960-8-24
36464
Tehama
Lassen Loop, 1/2 mi SE of Sulphur Works.
2133
Comment
CAS-BOT-BC31621
Carex luzulina var. luzulina
John Thomas Howell
1937-7-23
13332
Siskiyou
South Fork of Salmon River near Big Flat.
1524
Comment
CAS-BOT-BC31677
Carex mariposana
John Thomas Howell
1958-7-23
33857
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC31695
Carex mariposana
John Thomas Howell
1943-7-26
18852
Placer
Sugar Bowl NW of Mt. Lincoln
Comment
CAS-BOT-BC31745
Carex mariposana
John Thomas Howell
1962-7-10
38443
Kern
1.5 mi S of Summit. Greenhorn Mountains.
1950
Comment
CAS-BOT-BC31748
Carex mariposana
John Thomas Howell
1958-8-17
34543
Madera
East Fork of Granite Creek, between Cora Lake & The Niche.
2560
Comment
GH351986
Carex mendocinensis
J. T. Howell & J. W. Stacey
1936-6-7
12658
Unknown
Serpentine area near Bootjack, Mt. Tamalpais
Comment
CAS-BOT-BC146624
Carex mendocinensis
John Thomas Howell
1936-8-26
12808
Trinity
Tangle Blue Creek, Scott Mts.
Comment
CAS-BOT-BC31855
Carex microptera
John Thomas Howell
1944-8-16
20648
Mono
Mono Pass
Comment
CAS-BOT-BC31858
Carex microptera
John Thomas Howell
1944-8-10
20273
Mono
Glacier Canyon, Mt. Dana.
Comment
CAS-BOT-BC31889
Carex microptera
John Thomas Howell
1941-7-31
16558
Madera
Agnew Pass Trail.
Comment
CAS-BOT-BC31833
Carex microptera
John Thomas Howell
1938-8-2
14006
Placer
5 miles N of Brockway
Comment
SD112268
Carex multicaulis
Darley F. Howe
1940-6-7
1017
San Diego
Cuyamaca, North Peak.
Comment
CAS-BOT-BC119986
Carex multicostata
John Thomas Howell
1951-7-20
27992
Tulare
Farewell Gap Trail.
2895
Comment
CAS-BOT-BC119990
Carex multicostata
John Thomas Howell
1942-8-1
17546
Tulare
Sky Parlor Meadow, Chagoopa Plateau
Comment
CAS-BOT-BC32227
Carex multicostata
John Thomas Howell
1960-7-20
35732
Plumas
Boiling Springs Lake to Drakesbad.
1828
Comment
CAS-BOT-BC32271
Carex multicostata
John Thomas Howell
1938-8-8
14432
Mono
Mammouth Lakes Basin.
Comment
CAS-BOT-BC32277
Carex multicostata
John Thomas Howell
1939-8-8
15149 A
Siskiyou
Black Mt.
Comment
CAS-BOT-BC119956
Carex nebrascensis
John Thomas Howell; Gordon H. True
1967-9-20
43955
Tulare
Powell Meadow, ca 6 mi N of Blackrock Guard Station.
2682
Comment
CAS-BOT-BC119716
Carex nervina
John Thomas Howell
1976-7-19
51989
Lassen
On Gold Run Creek SW of Susanville.
1386
Comment
CAS-BOT-BC119659
Carex neurophora
John Thomas Howell
1943-8-5
19092 A
Glenn
Plaskett Meadows. Near fish tanks.
1828
Comment
CAS-BOT-BC9294
Carex orestera
John Thomas Howell
1949-8-5
26055
Inyo
Army Pass
3657
Comment
CAS-BOT-BC119094
Carex phaeocephala
John Thomas Howell
1948-7-20
24791
Inyo
East side of Kearsarge Pass.
3505
Comment
CAS-BOT-BC119141
Carex phaeocephala
John Thomas Howell
1940-8-2
15916
Tulare
West of Reflection Lake.
3505
Comment
CAS-BOT-BC118774
Carex preslii
John Thomas Howell
1937-7-25
13485
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
CAS-BOT-BC118714
Carex proposita
John Thomas Howell
1950-7-16
26983
Tulare
Talus in gorge north of Bakeoven Meadows, South Fork of Kern River.
2499
Comment
UCD140776
Carex raynoldsii
John Thomas Howell
1961-6-20
36557
Shasta
Lassen Volcanic National Park, Dersch Meadows.
1981
Comment
CAS-BOT-BC118018
Carex rossii
John Thomas Howell
1946-7-24
22698
Inyo
Mono Mesa
3657
Comment
CAS-BOT-BC118192
Carex rossii
John Thomas Howell; Gordon H. True
1970-6-24
46706
Tulare
North Manther Creek, Big Meadow to Manter Meadow, Kern Plateau
2438
Comment
SD71018
Carex rossii
John Thomas Howell
1960-8-18
36035
Tehama
Near Lassen Volcanic National Park; Bluff Falls.
1981
Comment
CAS-BOT-BC118043
Carex rossii
John Thomas Howell
1938-8-8
14431
Mono
Mammouth Lakes Basin
Comment
CAS-BOT-BC118135
Carex rossii
John Thomas Howell; R. C. Barneby
1954-5-14
29556
Plumas
2 mi E of Blairsdan
1493
Comment
RSA0079805
Carex rossii
John Thomas Howell
1960-7-17
35490
Plumas
Drakesbad. Lassen Volcanic National Park.
1677
Comment
RSA0079910
Carex rossii
John Thomas Howell
1948-7-28
25081
Tulare
Center Basin.
3657
Comment
SD112274
Carex sartwelliana
Darley F. Howe
1941-6-8
1293
Riverside
San Jacinto Mountains, Strawberry Creek.
Comment Read comments Aug 21 2007
SD43381
Carex scopulorum
Darley F. Howe
1947-3-22
Los Angeles
Topango Canyon; stream bed
Comment
CAS-BOT-BC117175
Carex spectabilis
John Thomas Howell
1946-7-20
s.n.
Fresno
Mono Rock
3352
Comment
SEINET12882914
Carex spectabilis
J. T. Howell
1939-1
15226
Unknown
Comment
CAS-BOT-BC116965
Carex straminiformis
John Thomas Howell
1942-8-2
17591
Tulare
Little Five Lakes Basin.
Comment
RSA38527
Carex straminiformis
J. T. Howell
1948-7-28
25125
Tulare
Center Basin.
3659
Comment
SD72076
Carex subbracteata
John Thomas Howell
1957-5-28
32516
San Francisco
Northwest side of Lone Mountain.
Comment
CAS-BOT-BC115813
Carex subfusca
John Thomas Howell
1936-8-27
12850
Trinity
Near Trinity Center.
Comment
CAS-BOT-BC115877
Carex subfusca
John Thomas Howell
1960-8-23
36451
Shasta
Lassen Loop east of Diamond Peak
2255
Comment
CAS-BOT-BC116554
Carex subfusca
John Thomas Howell; Gordon H. True
1968-6-9
44517
Placer
Alta.
1066
Comment
CAS-BOT-BC116584
Carex subfusca
John Thomas Howell
1955-7-8
30629
Monterey
Santa Lucia Camp, Arroyo Seco River.
609
Comment
SD112257
Carex subfusca
Darley F. Howe
1962-5-31
3322
San Diego
West side of Cuyamaca Middle Peak.
1524
Comment
SD112262
Carex subfusca
Darley F. Howe
1941-6-9
1291
Riverside
San Jacinto Mountains; Strawberry Creek.
Comment
CAS-BOT-BC9376
Carex subnigricans
John Thomas Howell
1949-8-5
26040
Tulare
Army Pass
3657
Comment
CAS-BOT-BC115687
Carex tompkinsii
John Thomas Howell
1972-4-25
48719
Mariposa
Merced River Canyon, 1 mi from Arch Rock on road to Cascade Falls.
914
Comment
SEINET7578149
Carex tompkinsii
John Thomas Howell
1958-7-28
34068
Fresno
Sierra Nevada, trail between Simpson Meadow, Middle Fork of the Kings River.
1676
Comment
CAS-BOT-BC115589
Carex tumulicola
John Thomas Howell
1946-6-9
21995
Marin
Near Inverness
Comment
UC904998
Carex tumulicola
John Thomas Howell
1943-5-2
17929 A
Marin
Big Carson Canyon
Comment
SEINET7578975
Carex tumulicola
John Thomas Howell
1937-5-23
13011
Unknown
Presidio, San Francisco.
Comment
CAS-BOT-BC115479
Carex utriculata
John Thomas Howell; Gordon H. True
1970-7-28
47005
Tulare
West side of Big Meadow just S of Pipe Spring.
2377
Comment
CAS-BOT-BC115497
Carex utriculata
John Thomas Howell
1944-8-17
20676
Tuolumne
Soda Springs
Comment
CAS-BOT-BC115186
Carex vernacula
John Thomas Howell
1934-6-14
12165
Modoc
Near Lost Lake, Warner Mts.
2438
Comment
RSA38507
Carex vernacula
J. T. Howell
1948-7-28
25083
Tulare
Center Basin.
3659
Comment
CAS-BOT-BC115202
Carex vernacula
John Thomas Howell
1948-7-28
25083
Fresno
Center Basin.
3657
Comment
JEPS59029
Carlquistia muirii
John Thomas Howell
1958-7-20
33679
Fresno
Copper Creek Canyon Sierra Nevada
2072
Comment
CAS-BOT-BC230241
Carpobrotus edulis
John Thomas Howell
1956-10-21
31919
San Francisco
N slope of Bayview Hills
Comment
RSA44183
Cassiope mertensiana subsp. californica
J. T. Howell
1947-8-7
23854
Inyo
West of Sixth Lake, Big Pine Lakes.
3415
Comment
CAS-BOT-BC32515
Castilleja adenophora
John Thomas Howell
1941-7-22
16400
Inyo
Mono Pass Trail
3352
Comment
CAS-BOT-BC249091
Castilleja affinis
John Thomas Howell
1926-4-11
1839
Alameda
Slope of Cedar Mt. above Rancho Repose
Comment
JEPS58949
Castilleja affinis subsp. affinis
John Thomas Howell
1946-5-16
21864
Marin
Angel Island, se side Marin County Angel Island
Comment
JEPS58916
Castilleja ambigua subsp. ambigua
John Thomas Howell
1946-5-25
21940
Marin
Greenbrae Marshes
Comment
UCR88754
Castilleja applegatei
J. T. Howell, G. H. True
1968-5-13
44288
Tulare
Kern Plateau, North Meadow Creek
2043
Comment
CAS-BOT-BC249352
Castilleja applegatei
John Thomas Howell; Gordon H. True
1967-5-29
42310
Inyo
Unspecified
1828
Comment
UCD122240
Castilleja applegatei subsp. disticha
John Thomas Howell
1958-8-11
34298
Madera
East Fork of Granite Creek, near Joe Crane Creek.
2438
Comment
CAS-BOT-BC249484
Castilleja applegatei subsp. pallida
John Thomas Howell
1941-7-31
16607
Madera
Ridge nw. of San Joaquin Mt.
Comment
GH365461
Castilleja applegatei subsp. pinetorum
J. T. Howell
1943-8-6
19114
Unknown
Black Butte
Comment
CAS-BOT-BC243733
Castilleja applegatei var. pinetorum
John Thomas Howell
1960-8-19
36181
Shasta
Summit ridge, Brokeoff Mt., Lassen Volcanic National Park
2773
Comment
JEPS58942
Castilleja attenuata
John Thomas Howell
1943-4-11
17917
Marin
Black Canyon San Rafael Hills
Comment
SDSU10544
Castilleja chromosa
D. F. Howe
1961-4-26
3020
Inyo
1.5 miles E of west entrance to Inyo National Forest on Watergard Pass Rd.
1829
Comment
GH56145
Castilleja howellii
J. T. Howell
1941-8-8
16884
Unknown
Agnew Pass
Comment
CAS-BOT-BC241375
Castilleja latifolia
John Thomas Howell
1963-9-4
40335
Monterey
Moss Landing
Comment
CAS-BOT-BC243841
Castilleja latifolia
John Thomas Howell
1933-4-9
10969
San Mateo
Coastal hillside between Pescadero and Pigeon Pt.
Comment
CAS-BOT-BC243858
Castilleja latifolia
John Thomas Howell
1930-7-27
5412
Sonoma
4 miles north of Bodega Bay
Comment
CAS-BOT-BC251419
Castilleja lemmonii
John Thomas Howell
1940-8-9
16091
Fresno
Bullfrog Lake
Comment
SD64365
Castilleja linariifolia
Darley F. Howe
1966-8-17
Inyo
Big Pine Creek
2408
Comment
SDSU10568
Castilleja mendocinensis
D. F. Howe
1962-5-24
3315
Mendocino
Seabluff, Ft. Bragg.
Comment Read comments Oct 25 2011
SD114369
Castilleja mollis
Darley F. Howe
1963-5-18
3718
San Luis Obispo
Sand dunes, Lake Oso Flaco
Comment
CAS-BOT-BC241037
Castilleja pilosa
John Thomas Howell
1951-6-28
27696
Plumas
Eureka Peak
1981
Comment
CAS-BOT-BC241087
Castilleja schizotricha
John Thomas Howell
1939-8-4
15043
Siskiyou
Marble Rim, Marble Mts.
1889
Comment
POM202854
Castilleja wightii
J. T. Howell
1934-3-3
11735
Sonoma
Bodega Bay.
Comment
RSA66820
Caulanthus cooperi
J. T. Howell
1930-5-13
4952
Kern
Red Rock Canyon
Comment
SD104892
Ceanothus cordulatus
Darley Howe
1979-6-26
Siskiyou
Road 1 mi. N of Ca. Hwy 89, 3 mi. E of McCloud
945
Comment Read comments Mar 5 2015
CAS-BOT-BC48814
Ceanothus cuneatus
John Thomas Howell
1962-6-15
37447
Butte
Magalia
731
Comment
SD42001
Ceanothus cuneatus
D. F. Howe
1947-5-4
1569
Los Angeles
Mint Canyon, dry hillside
Comment
SEINET12210971
Ceanothus cuneatus
M. P. Howe
1984-1
12
Butte
Doe Mill Summit
579
Comment
CAS-BOT-BC48408
Ceanothus cuneatus var. cuneatus
John Thomas Howell
1939-6-16
14766
Santa Cruz
Ben Lomond
Comment
CAS-BOT-BC49701
Ceanothus cuneatus var. rigidus
John Thomas Howell
1931-5-22
6501
Monterey
2 miles from Del Monte on road to Santa Cruz
Comment
SD88418
Ceanothus dentatus
D. F. Howe
1972-4-25
4808
Santa Cruz
Near Hecker Pass, Santa Cruz Mountains
Comment
CAS-BOT-BC64441
Ceanothus divergens
John Thomas Howell
1941-6-21
16320
Napa
Hills sw. of St. Helena.
Comment
SBBG27216
Ceanothus ferrisiae
J. T. Howell
1937-5-20
Santa Clara
Coyote Crk, ca. 3 mi E of Madrone
Comment
CAS-BOT-BC50004
Ceanothus gloriosus
John Thomas Howell
1935-5-5
12614
Sonoma
6 miles from Santa Rosa on road to Sonoma
Comment
RSA518956
Ceanothus greggii var. vestitus
J. T. Howell
1958-5-26
33446
Inyo
[Unspecified]
2043
Comment
A349630
Ceanothus integerrimus
J. T. Howell
1940-6-29
15587
Unknown
Between Cobb Mt. and Middletown
Comment
SD51224
Ceanothus integerrimus var. macrothyrsus
Darley F. Howe
1960-9-20
2985
Plumas
North Fork of Feather River, 41 miles from Oroville
609
Comment
SD114016
Ceanothus leucodermis
Darley F. Howe
1936-4-26
316
San Diego
Campo
Comment
CAS-BOT-BC50492
Ceanothus oliganthus
John Thomas Howell
1930-5-18
5173
Los Angeles
Pacoima Canyon, San Gabriel Mountains
Comment
CAS-BOT-BC51587
Ceanothus oliganthus var. sorediatus
John Thomas Howell
1931-3-22
5947
San Luis Obispo
at summit of Cuesta Pass
Comment
SDSU10311
Ceanothus papillosus var. roweanus
D. F. Howe
1951-4-28
2085
Monterey
Santa Lucia Mtns.
762
Comment
CAS-BOT-BC53193
Ceanothus parvifolius
John Thomas Howell
1960-6-5
35299
Fresno
Sierra Nevada - 1.2 mi. n. of Cherry Gap
1981
Comment
CAS-BOT-BC53127
Ceanothus parvifolius
John Thomas Howell
1954-6-5
29931
Tuolumne
4 miles sw. of Strawberry
Comment
CAS-BOT-BC51958
Ceanothus pinetorum
John Thomas Howell
1950-7-21
27154
Tulare
Monache Mt.
2590
Comment
CAS-BOT-BC52058
Ceanothus prostratus
John Thomas Howell
1975-7-22
51356
Plumas
2 miles Northwest of Spring Garden
1173
Comment
A425174
Ceanothus ramulosus
J. T. Howell
1938-6-19
13927
Unknown
Rattlesnake, Mt. Tamalpais
Comment
RSA77338
Ceanothus sonomensis
J. T. Howell
1935-5-5
12609
Sonoma
Slopes of Triniti Mountain, 2 miles E of Glen Ellen
Comment
SD98830
Ceanothus thyrsiflorus
D. F. Howe
1977-5-16
4940
San Luis Obispo
Near mouth of Arroyo de la Cruz, south side
Comment
CAS-BOT-BC63118
Ceanothus vestitus
John Thomas Howell; Gordon H. True
1969-5-13
45696
Tulare
2 mi. s. of Lamont Madow near summit of Spanish Needle Creek rd.
1645
Comment
UCR139454
Ceanothus vestitus
J. T. Howell
1947-8-16
24163
Inyo
Sierra Nevada Mtns., Big Pine Lakes Trail
2744
Comment
RSA80419
Celtis reticulata
D. F. Howe
1953-5-24
s.n.
San Diego
Thing Valley, east base of Laguna Mts.
Comment
CAS-BOT-BC276970
Centaurea calcitrapa
John Thomas Howell
1925-11-26
1562
Solano
Near Lake Chabot
Comment
CAS-BOT-BC272077
Centaurea cyanus
John Thomas Howell
1963-7-10
39722
Alpine
Markleeville, Sierra Nevada
1676
Comment
CAS-BOT-BC277009
Centaurea diluta
John Thomas Howell
1956-8-19
31782
San Francisco
San Francisco. Third St. near Paul Ave.
Comment
CAS-BOT-BC288541
Centromadia fitchii
John Thomas Howell
1955-8-24
30904
Contra Costa
Mt Diablo near Turtle Rock
259
Comment
SD50717
Centromadia fitchii
Darley F. Howe
1959-8-1
2770
Placer
2.0 miles north of Auburn.
455
Comment
UCD130200
Centromadia pungens
John Thomas Howell
1967-11-3
44059
Tulare
near north fence, about 4.5 miles ENE of Pixley, Valley Grassland.
83
Comment
CAS-BOT-BC279585
Centromadia pungens subsp. pungens
John Thomas Howell
1970-9-25
47472
Kern
Lake Isabella (east side of north arm), about 5 miles south of Kernville
792
Comment
SDSU4605
Centromadia pungens subsp. pungens
D. F. Howe
1962-8-8
3416
Sacramento
Jefferson Blvd. south of Sacramento.
Comment
CAS-BOT-BC388204
Cerastium fontanum subsp. vulgare
John Thomas Howell
1976-7-15
51829
Plumas
Quincy
1051
Comment
CAS-BOT-BC388267
Cerastium glomeratum
John Thomas Howell; Gordon H. True
1969-4-8
45488
Butte
Paradise
518
Comment
CAS-BOT-BC400218
Ceratophyllum demersum
John Thomas Howell
1926-11-7
2245
San Francisco
Lake Merced, San Francisco
Comment
CAS-BOT-BC207386
Cercis occidentalis
John Thomas Howell
1929-3-29
4108
Merced
Merced River bottom at Hopeton Bridge.
60
Comment
CAS-BOT-BC148495
Cercocarpus ledifolius var. ledifolius
John Thomas Howell
1928-6-15
3931
Inyo
Upper part of Surprise Canyon, Panamint Mts.
2346
Comment
CAS-BOT-BC279506
Chaenactis artemisiifolia
John Thomas Howell
1928-4-22
3752
Ventura
At. Pt. Mugu
Comment
CAS-BOT-BC284565
Chaenactis glabriuscula var. heterocarpha
John Thomas Howell
1943-5-11
18064
Lake
2.9 miles north of Middletown
Comment
CAS-BOT-BC284282
Chaenactis santolinoides
John Thomas Howell; Gordon H. True
1970-6-26
46881
Tulare
1 mile south of Dry Lake on Cherry Hill Road, Kern Plateau, Sierra Nevada
Comment
CAS-BOT-BC279555
Chaenactis stevioides
John Thomas Howell
1928-3-31
3573
San Bernardino
20 miles east of Daggett on Arrowhead Trail, Mojave Desert
Comment
CAS-BOT-BC284309
Chaenactis stevioides
John Thomas Howell; Gordon H. True
1969-5-13
45669
Kern
Spanish Needle Creek Road to Lamont Meadow, Sierra Nevada
1371
Comment
CAS-BOT-BC279744
Chaenactis xantiana
John Thomas Howell; Gordon H. True
1967-7-5
43059
Tulare
6.4 miles north of Chimney Meadow, Kern Plateau
2225
Comment
CAS-BOT-BC279672
Chaenactis xantiana
John Thomas Howell
1976-5-18
51756
Kern
2.6 miles from Wofford, along old road from Alta Sierra to Wofford. Greenhorn Mountains
Comment
SDSU7125
Chaenactis xantiana
D. F. Howe
1971-6-26
4745
Mono
12.4 miles north of Mono-Inyo Co. line on #6.
1463
Comment
RSA98037
Chamaesyce prostrata
J. T. Howell
1952-10-26
s.n.
San Bernardino
Garden weed.
Comment
CAS-BOT-BC66349
Cheilanthes covillei
John Thomas Howell
1970-5-10
46522
Marin
in crevice of Fern Rock, on Old Stage Road above Bootjack, Mt. Tamalpais
Comment
CAS-BOT-BC68275
Cheilanthes gracillima
John Thomas Howell
1945-6-20
21115
Lake
Pinnacle Rock, Bartlett Mountain
Comment
CAS-BOT-BC70272
Cheilanthes intertexta
John Thomas Howell
1958-7-23
33790
Fresno
Simpson meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC426342
Chenopodium
John Thomas Howell
1975-7-23
51389
Lassen
Susanville, south edge of town on highway to Janesville
1295
Comment
CAS-BOT-BC426307
Chenopodium atrovirens
John Thomas Howell
1947-7-24
23575
San Bernardino
San Bernardino Mts.: Santa Ana River
1920
Comment
CDA3029
Chenopodium berlandieri var. zschackei
J. T. Howell
1957-6-16
32664
San Francisco
Central Western; San Francisco Bay Area region; Third and Davidson streets, San Francisco.
0
Comment
POM203791
Chenopodium pratericola
J. T. Howell
1934-7-8
12499
Lassen
Spalding s, Eagle Lake.
Comment
CAS-BOT-BC451433
Chimaphila menziesii
John Thomas Howell
1937-7-22
13295
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC452258
Chimaphila umbellata
John Thomas Howell
1937-7-26
13559
Siskiyou
Caribou Gulch
Comment
SD81290
Chlorogalum pomeridianum var. divaricatum
Darley F. Howe
1969-5-26
4574 1
Marin
North part of Point Reyes.
Comment
CAS-BOT-BC246320
Chloropyron maritimum subsp. palustre
John Thomas Howell
1945-8-5
21370
Marin
Stinson Beach
Comment
SDSU4934
Chorizanthe angustifolia
D. F. Howe
1963-6-30
3587
San Luis Obispo
Hillside S of Morro Bay.
122
Comment
SD56800
Chorizanthe angustifolia
Darley F. Howe
1963-5-18
3493
San Luis Obispo
11.7 mi. south of Pismo Beach on # 1.
Comment
RSA137070
Chorizanthe clevelandii
J. T. Howell
1955-7-8
30598
Monterey
2 miles from San Antonio Mission on road to Santa Lucia Camp.
335
Comment
CAS-BOT-BC256925
Chorizanthe membranacea
John Thomas Howell
1931-5-23
6520
Monterey
Road to Santa Lucia Camp, 27 miles from King City, Santa Lucia Mts.
Comment
SD64315
Chorizanthe pungens
D. F. Howe
1966-5-26
4240
Santa Cruz
5.3 miles east of Capitola on Hwy #1
Comment
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-BC248042
Chorizanthe watsonii
John Thomas Howell
1962-5-22
37384
Tulare
1.5 mi. east of Johnsondale
1371
Comment
CAS-BOT-BC255366
Chorizanthe xanti var. xanti
John Thomas Howell; Alice Eastwood
1937-4-29
4127
San Luis Obispo
Carrizo Plain near Painted Rock
Comment
RSA54048
Chrysanthemum leucanthemum
J. T. Howell
1949-7-4
25356
San Mateo
Skyline Blvd., north of Millbrae
Comment
GH344102
Chrysolepis chrysophylla
J. T. Howell
1947-7-6
23327
Unknown
Eldridge Grade above Phoenix Lake, Mt. Tamalpais
Comment
CAS-BOT-BC36187
Chrysolepis sempervirens
John Thomas Howell
1950-7-12
26734
Inyo
Sage Flat to Olancha Pass
2743
Comment
CAS-BOT-BC36247
Chrysolepis sempervirens
John Thomas Howell
1937-7-26
13545
Siskiyou
Caribou Gulch
Comment
RSA263849
Chrysothamnus nauseosus subsp. albicaulis
J. T. Howell
1974-9-20
50902
Plumas
Near Spring Garden
1159
Comment
SDSU6313
Chrysothamnus viscidiflorus subsp. puberulus
D. F. Howe
1960-9-16
2968
Mono
18.5 miles north of Bishop.
1920
Comment
CAS-BOT-BC100795
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell
1947-8-13
24040
Inyo
Black Lake Trail, Big Pine Lakes
3200
Comment
UCD130464
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell
1963-8-21
40218
Inyo
Whitney Portal Road.
2255
Comment
CAS-BOT-BC162752
Chylismia claviformis subsp. claviformis
John Thomas Howell
1950-7-12
26684
Inyo
Sage Flat to Olancha Pass
1981
Comment
CAS-BOT-BC279852
Cichorium intybus
John Thomas Howell; Gordon H. True
1967-9-18
43808
Tulare
Northeast end of Long Valley. Kern Plateau
2011
Comment
CAS-BOT-BC190007
Cinna latifolia
John Thomas Howell
1939-8-6
15094
Siskiyou
Marble Mountains. Spirit Lake.
1828
Comment
SD114078
Circaea alpina subsp. pacifica
Darley F. Howe
1939-7-24
937
Mariposa
Oak Flat Road
Comment
JEPS28955
Cirsium andersonii
John Thomas Howell
1962-7-10
38513
Kern
Sierra Nevada, Greenhorn Mountains, Summit of Cooks Peak
2103
Comment
POM226231
Cirsium andrewsii
J. T. Howell
1933-7-9
11424
San Francisco
Lake Merced
Comment
CAS-BOT-BC105816
Cirsium arizonicum
John Thomas Howell
1947-8-9
23948
Inyo
Big Pine Lakes, Fifth Lake
3352
Comment
CAS-BOT-BC277979
Cirsium cymosum
John Thomas Howell; Gordon H. True
1971-6-17
48019
Kern
0.5 mile east of Bodfish Gap
1219
Comment
CAS-BOT-BC278045
Cirsium cymosum
John Thomas Howell
1952-6-15
28361
Siskiyou
Just east of Montague
Comment
CAS-BOT-BC279964
Cirsium douglasii var. douglasii
John Thomas Howell
1947-6-18
23286
Marin
North of Dillons Beach
Comment
CAS-BOT-BC100934
Cirsium fontinale var. campylon
John Thomas Howell
1937-7-5
13094
Santa Clara
Metcalf Road in hills east of Coyote
Comment
CAS-BOT-BC285482
Cirsium occidentale var. californicum
John Thomas Howell
1954-6-5
29939
Tuolumne
Near Dardanelle, Middle Fork Stanislaus River
1828
Comment
RSA821
Cirsium occidentale var. californicum
J. T. Howell
1927-6-26
212
Orange
Claymine Canon near Sierra Peak. [canyon]
244
Comment
CAS-BOT-BC100984
Cirsium occidentale var. compactum
John Thomas Howell
1961-4-13
s.n.
San Luis Obispo
flats just north of Cambria
Comment
CAS-BOT-BC285606
Cirsium occidentale var. occidentale
John Thomas Howell
1946-5-14
21844
Marin
Along road between Rock Spring and Summit Meadow, Mt. Tamalpais
Comment
CAS-BOT-BC285692
Cirsium occidentale var. occidentale
John Thomas Howell
1931-4-12
6280
Santa Barbara
Cochie Canyon, Santa Cruz Island
Comment
CAS-BOT-BC280129
Cirsium occidentale var. venustum
John Thomas Howell
1933-7-2
11418
San Luis Obispo
Paso Robles
Comment
CAS-BOT-BC292689
Cirsium occidentale var. venustum
John Thomas Howell
1945-6-21
21179
Lake
Sawmill Flat to Ruppert Ridge, Bartlett Mountain
Comment
CAS-BOT-BC280136
Cirsium occidentale var. venustum
John Thomas Howell
1939-6-16
14747
San Mateo
Kings Mt.
Comment
CAS-BOT-BC286389
Cirsium occidentale var. venustum
John Thomas Howell
1958-5-28
33564
Inyo
Bishop Creek
1828
Comment
CAS-BOT-BC280539
Cirsium quercetorum
John Thomas Howell
1938-7-3
13953
Sonoma
Stony Point
Comment
UC1177342
Cirsium quercetorum
John Thomas Howell
1953-6-15
29100
Monterey
20 mi from Greenfield (on road to Carmel); Santa Lucia Mountains
Comment
CAS-BOT-BC288746
Cirsium remotifolium
John Thomas Howell
1939-6-25
14796
Marin
Summit Avenue, Mill Valley
Comment
CAS-BOT-BC286479
Cirsium scariosum
John Thomas Howell
1960-8-18
36087
Tehama
Lassen Volcanic National Park. Sulphur Works entrance station
2011
Comment
CAS-BOT-BC286359
Cirsium scariosum
John Thomas Howell
1951-6-29
27736
Plumas
Near Spring Garden
1219
Comment
CAS-BOT-BC438933
Cistanthe monandra
John Thomas Howell; Gordon H. True
1968-5-12
44237
Tulare
Brush Creek Canyon. Kern Plateau
1402
Comment
CAS-BOT-BC438773
Cistanthe monandra
John Thomas Howell
1955-5-21
30247
Monterey
Cachagua Creek, Santa Lucia Mts.
Comment
CAS-BOT-BC228945
Cistanthe umbellata
John Thomas Howell; Gordon H. True
1970-7-14
5519
Sierra
At Verdi Peak Lookout, Verdi Range
2560
Comment
CAS-BOT-BC233919
Cistanthe umbellata
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49204
Lassen
Elysian Valley northwest of Janesville, Sierra Nevada
1325
Comment
SDSU8635
Clarkia bottae
D. F. Howe
1949-5-29
1983
Los Angeles
Santa Monica Mts.
274
Comment
CAS-BOT-BC172181
Clarkia concinna
John Thomas Howell
1929-5-30
4279
Napa
Between Chiles and Pope Valleys, Napa Range
Comment
SD53095
Clarkia concinna
Darley F. Howe
1962-5-20
3255
Mendocino
9.1 miles North of Willits on #101.
366
Comment
CAS-BOT-BC163879
Clarkia purpurea subsp. quadrivulnera
John Thomas Howell
1957-4-30
32130
San Benito
5.3 miles sw. of Bitterwater
365
Comment
POM191530
Clarkia purpurea subsp. quadrivulnera
J. T. Howell
1928-6-10
3875
Los Angeles
Monrovia Canyon, San Gabriel Mtns.
Comment
CAS-BOT-BC165076
Clarkia rubicunda
John Thomas Howell
1946-6-23
s.n.
Marin
Near Fairfax Country Club (Meadow Club)
Comment
SD88531
Clarkia rubicunda
Darley F. Howe
1972-6-25
San Mateo
Ocean bluff, 7.5 miles North of Half Moon Bay
Comment
SD53170
Clarkia unguiculata
Darley F. Howe
1962-5-26
San Benito
1.3 miles North of Paicines on #25.
244
Comment
CAS-BOT-BC165775
Clarkia williamsonii
John Thomas Howell
1954-5-19
29893
Mariposa
4 miles northwest of Bagby
Comment
SD69945
Clarkia williamsonii
Darley F. Howe
1968-6-2
Mariposa
16.2 miles South of Mariposa on Route 49
1067
Comment
CAS-BOT-BC439107
Claytonia cordifolia
John Thomas Howell
1939-8-3
15012
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
SDSU9780
Claytonia exigua subsp. exigua
D. F. Howe
1963-5-23
3532
Sonoma
4 miles north of Cloverdale on #128.
335
Comment
RSA0059502
Claytonia gypsophiloides
J. T. Howell
1945-4-29
20795
Marin
Serpentine ridge W of Camp Handy, Mt. Tamalpais
Comment
CAS-BOT-BC439572
Claytonia parviflora subsp. parviflora
John Thomas Howell
1957-5-29
32544
San Francisco
San Francisco. North side of Lone Mt.
Comment
CAS-BOT-BC439894
Claytonia perfoliata
John Thomas Howell; Gordon H. True
1968-5-13
44266
Tulare
North Meadow Creek, Kern Plateau.
1981
Comment
CAS-BOT-BC440082
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1931-3-18
5856
Fresno
At head of Oil Canyon
Comment
CAS-BOT-BC440105
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1962-7-8
38273
Kern
South side of Black Mt., Greenhorn Mountains
1432
Comment
CAS-BOT-BC443690
Claytonia perfoliata subsp. perfoliata
John Thomas Howell; Gordon H. True
1970-6-26
46833
Tulare
True Meadow, Kern Plateau.
2225
Comment
CAS-BOT-BC443779
Claytonia rubra subsp. rubra
John Thomas Howell
1976-4-28
51611
Lake
Between Elk Mt. & Lake Pillsbury
792
Comment
SD113805
Clematis lasiantha
Darley F. Howe
1947-3-22
1512
Los Angeles
Las Flores Canyon, Malibu Mts.
Comment
CAS-BOT-BC240916
Collinsia multicolor
John Thomas Howell
1957-5-17
32285
San Francisco
San Francisco. Bayview Hills
Comment
CAS-BOT-BC240949
Collinsia parryi
John Thomas Howell
1928-5-6
3780
Los Angeles
On trail to Madrono [Madrono] Flats, E. Fork of Santa Anita Canon [Canyon], San Gabriel Mts.
Comment
POM303694
Collinsia rattanii
J. T. Howell
1944-7-17
19833
Glenn
Canyon of Snow Basin Creek
Comment
UC702915
Collomia linearis
John Thomas Howell
1942-7-26
17201
Tulare
Mineral King
Comment
UC648287
Collomia tinctoria
John Thomas Howell
1939-8-9
15239
Siskiyou
Shackleford Creek Trail Marble Mts.
Comment
CAS-BOT-BC285965
Conyza bonariensis
John Thomas Howell
1972-8-17
s.n.
Monterey
Pacific Grove
Comment
CAS-BOT-BC288939
Conyza canadensis
John Thomas Howell; Gordon H. True
1967-7-6
43215
Tulare
About 4.5 miles ENE of Pixley, from northern 1/3 of area
83
Comment
CAS-BOT-BC288966
Conyza floribunda
John Thomas Howell
1975-9-25
51508
San Mateo
At summit, San Bruno Mt
396
Comment
CAS-BOT-BC237939
Cordylanthus eremicus subsp. kernensis
John Thomas Howell
1950-7-12
26666
Inyo
Sage Flat to Olancha Pass
2133
Comment
RSA289996
Cordylanthus eremicus subsp. kernensis
J. T. Howell
1950-7-22
27169
Tulare
Olancha Peak
2896
Comment Read comments Nov 29 2011
POM203970
Cordylanthus maritimus subsp. palustris
J. T. Howell
1933-7-30
11480
Marin
Inverness.
Comment
RSA82046
Cordylanthus mollis subsp. mollis
J. T. Howell
1945-7-8
21277
Marin
Burdell Station
Comment
JEPS41342
Cordylanthus rigidus subsp. rigidus
John Thomas Howell
1962-9-24
38855
Kern
near Tiger Flat; Sierra Nevada, Greenhorn Mountains
1981
Comment
JEPS6777
Cordylanthus rigidus subsp. setiger
John Thomas Howell
1927-6-26
2599
Orange
Claymine Canyon Santa Ana Mts
365
Comment
CAS-BOT-BC289017
Coreopsis bigelovii
John Thomas Howell; Gordon H. True
1967-5-29
42279
Inyo
1/3 mile E of head on Nine Mile Canyon
1828
Comment
CAS-BOT-BC101157
Corethrogyne filaginifolia
John Thomas Howell
1930-8-3
5431
Monterey
Seventeen Mile Drive, Pacific Grove
Comment
CAS-BOT-BC105656
Corethrogyne filaginifolia
John Thomas Howell
1944-5-14
19454
Marin
Pt. Reyes Station
Comment
CAS-BOT-BC105797
Corethrogyne filaginifolia
John Thomas Howell
1962-9-25
38871
Kern
Kernville - Sierra Nevada
807
Comment
RSA128946
Corethrogyne filaginifolia var. californica
J. T. Howell
1939-6-18
14767
Marin
Near Mud Lake
Comment
SD37168
Corethrogyne filaginifolia var. filaginifolia
Darley F. Howe
1941-8-4
San Bernardino
San Bernardino Mountains, Strawberry Peak.
Comment
CAS-BOT-BC212208
Cornus sericea
John Thomas Howell; Gordon H. True
1973-7-31
50043
Lassen
On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada
1783
Comment
CAS-BOT-BC210268
Cornus sericea
John Thomas Howell
1934-6-11
11964
Modoc
Parker Creek, Warner Mts.
1584
Comment
CAS-BOT-BC290334
Crepis
John Thomas Howell
1954-6-6
29962
Tuolumne
Twain Harte
1127
Comment
SD51414
Crepis acuminata
Darley F. Howe
1961-6-18
Inyo
0.7 mile from Westgard Pass on road to Big Pine, White Mountains.
2165
Comment
SDSU3883
Crepis acuminata
D. F. Howe
1946-8-3
1471
San Bernardino
Sugarloaf trail from Rathbone Creek.
2743
Comment
RSA88087
Crepis occidentalis subsp. conjuncta
J. T. Howell
1951-6-27
27633
Plumas
Jamison Creek
1829
Comment
CAS-BOT-BC290925
Crepis vesicaria
John Thomas Howell
1975-4-18
s.n.
San Mateo
From the home of Mrs. Hewlett Lee, Berenda Farm, Portola Valley
Comment
CAS-BOT-BC299716
Crocidium
John Thomas Howell
1931-2-23
5749
Mariposa
7 miles from Coulterville
Comment
SD129874
Croton setiger
Melanie Howe, Charles Caldwell
1988-8-3
39
San Diego
Mission Trails Regional Park, Padre Dam
Comment
CAS-BOT-BC189239
Cryptantha
John Thomas Howell
1967-6-22
42615
Butte
Magalia
701
Comment
CAS-BOT-BC189438
Cryptantha circumscissa
John Thomas Howell; Gordon H. True
1967-8-8
43569
Tulare
Slopes SE of Long Valley on road to Lamont Meadow, Kern Plateau
1859
Comment
CAS-BOT-BC189441
Cryptantha circumscissa
John Thomas Howell; Gordon H. True
1970-7-29
47135
Tulare
Pine Flat, Kern Plateau
2194
Comment
SD113304
Cryptantha circumscissa
Darley F. Howe
1946-6-2
1556
San Bernardino
Highway between Adelanto & Hesperia, Mojave Desert
Comment
CAS-BOT-BC218889
Cryptantha circumscissa subsp. rosulata
John Thomas Howell
1949-7-18
25471
Inyo
Cottonwood Lakes
3413
Comment
CAS-BOT-BC218891
Cryptantha circumscissa subsp. rosulata
John Thomas Howell
1950-7-22
27234
Tulare
Summit ridge, Olancha Peak
3698
Comment
RSA640
Cryptantha clevelandii
J. T. Howell
1928-2-25
837
Orange
Near Bee Canyon, Rancho Santa Ana.
152
Comment
CAS-BOT-BC216349
Cryptantha glomeriflora
John Thomas Howell
1946-7-14
22264
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC218786
Cryptantha glomeriflora
John Thomas Howell
1949-8-11
26214
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC218790
Cryptantha glomeriflora
John Thomas Howell
1942-8-7
17771 A
Tulare
Lost Canyon
3048
Comment
UC909666
Cryptantha glomeriflora
John Thomas Howell
1950-7-24
27301
Tulare
Monache Creek, South Fork Sierra Nevada, Monache Creek, South Fork
2987
Comment
UCR88936
Cryptantha incana
J. T. Howell, G. H. True
1971-7-13
48344
Tulare
Sierra Nevada Mtns, Pine Flat. Kern Plateau.
2195
Comment
POM196471
Cryptantha leiocarpa
J. T. Howell
1926-7-13
2066
San Francisco
Lone Mt., San Francisco.
Comment Read comments Sep 7 2010
UC857280
Cryptantha torreyana
John Thomas Howell
1937-7-29
13655
Siskiyou
between Trinity and Siskiyou County; Scott Mountain
Comment
CAS-BOT-BC70491
Cryptogramma acrostichoides
John Thomas Howell
1951-7-21
28095
Tulare
White Chief region
3200
Comment
CAS-BOT-BC85627
Cupressus arizonica
John Thomas Howell; Gordon H. True
1971-6-17
48053
Kern
Sierra Nevada - Bodfish Grove of Piute Cypress, 2 miles east of Bodfish Gap
1432
Comment
RSA988
Cupressus forbesii
J. T. Howell
1927-8-10
221
Orange
Claymine Canon, near Sierra Peak.
365
Comment
CAS-BOT-BC224593
Cuscuta californica var. papillosa
John Thomas Howell
1933-8-17
11539
San Benito
4 miles n. of the Pinnacles
Comment
RSA94092
Cuscuta campestris
J. T. Howell
1946-8-17
22851
Sonoma
The Laguna north of Sebastopol
Comment
UC1042318
Cuscuta obtusiflora var. glandulosa
John Thomas Howell
1946-8-17
22851
Sonoma
n of Sebastopol; The Laguna
Comment
UC710535
Cuscuta occidentalis
John Thomas Howell
1943-8-12
19307
Glenn
Canyon of Snow Basin Creek
Comment
SD113437
Cylindropuntia ganderi var. ganderi
Darley F. Howe
1955-4-15
2474
San Diego
Campbell Ranch, north of Vallecito Stagecoach Station. (IPB 7/07)
Comment
JEPS88622
Cynara cardunculus subsp. cardunculus
John Thomas Howell
1956-11-14
31961
San Mateo
Bayshore Highway just south of Main Street, Redwood City
Comment
RSA47
Cynodon dactylon
J. T. Howell
1927-7-27
488
Orange
Santa Ana River, Rancho Santa Ana.
152
Comment
CAS-BOT-BC114570
Cyperus eragrostis
John Thomas Howell
1976-10-29
52304
El Dorado
Along the course of Sweetwater Creek below the high-water line of Folsom Lake.
121
Comment
CAS-BOT-BC114669
Cyperus eragrostis
John Thomas Howell
1963-6-21
39438
Monterey
Along Highway US 101, Prunedale.
Comment
CAS-BOT-BC70670
Cystopteris fragilis
John Thomas Howell; Gordon H. True
1969-6-23
45831
Plumas
Middle Fork of Feather River at Nelson Point
1249
Comment
SD104898
Dactylis glomerata
Darley Howe
1979-6-22
Mendocino
17.5 miles southwest of Ukiah on Route 253
853
Comment
CAS-BOT-BC189726
Danthonia californica
John Thomas Howell
1943-5-9
17966
Marin
San Rafael Hills.
Comment
CAS-BOT-BC192254
Danthonia californica
John Thomas Howell
1937-7-1
13456
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
UCD61296
Danthonia unispicata
John Thomas Howell
1942-8-5
17701
Tulare
Between Big Arroyo and Chagoopa Plateau.
Comment
SEINET10893609
Danthonia unispicata
John Thomas Howell
1944-8-6
Howell 20023
Tuolumne
Tuolumne Meadows.
Comment
SD50777
Daucus carota
Darley F. Howe
1959-8-4
2805
Humboldt
9 miles east of Arcata on # 395
Comment
CAS-BOT-BC293822
Deinandra fasciculata
John Thomas Howell
1930-5-10
4789
Riverside
2 miles south of Perris
Comment
CAS-BOT-BC299333
Deinandra fasciculata
John Thomas Howell
1931-6-1
6625
Orange
San Clemente
Comment
SD112755
Deinandra fasciculata
Darley F. Howe
1968-7-2
3323
San Diego
San Onofre (mak 11/07)
Comment
SD53172
Deinandra increscens subsp. villosa
Darley F. Howe
1962-7-21
3326
Santa Barbara
22 miles west of Goleta on Highway 101.
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
SD62046
Deinandra mohavensis
Darley F. Howe
1965-8-18
4130
Kern
East of mountain, east of Kernville.
1220
Comment Read comments May 24 2013
CAS-BOT-BC291963
Deinandra pallida
John Thomas Howell
1962-5-20
37098 a
Kern
5 mi. ne. of Southern Pacific RR station in Bakersfield
213
Comment
RSA584782
Delphinium depauperatum
J. T. Howell, G. H. True
1969-6-25
45853
Sierra
3 miles N of Bassetts on road to Gold Lake.
1951
Comment
SDSU10035
Delphinium glaucum
D. F. Howe
1941-8-4
1194
Inyo
Lone Pine Creek, Sierra Nevadas.
Comment
CAS-BOT-BC10174
Delphinium hansenii
John Thomas Howell; Gordon H. True
1968-5-13
44342
Tulare
Cherry Hill Road at Rincon Trail, Brush Creek Canyon, Kern Plateau
1463
Comment
CAS-BOT-BC116097
Delphinium nuttallianum
J. T. Howell; Gordon H. True
1967-7-11
43325
Plumas
Coniferous forest about 3 miles southeast of Mt. Hough
1706
Comment
SD113787
Delphinium parishii subsp. subglobosum
Darley F. Howe
1955-5-29
2481
San Diego
Desert rim of Laguna Mts.
Comment
UC990942
Delphinium parryi subsp. parryi
D. F. Howe
1951-4-28
Monterey
Jolon
426
Comment
CAS-BOT-BC7769
Delphinium variegatum subsp. variegatum
John Thomas Howell
1941-4-5
16175
Sonoma
1 mile S of El Verano
Comment
SDSU10058
Delphinium variegatum subsp. variegatum
D. F. Howe
1948-5-21
1907
Placer
457
Comment
CAS-BOT-BC82878
Dendromecon rigida
John Thomas Howell
1962-6-15
37443
Butte
Sierra Nevada. Magalia.
731
Comment
CAS-BOT-BC192708
Deschampsia danthonioides
John Thomas Howell
1970-9-25
47480
Kern
East side of Lake Isabella, 5 miles s. of Kernville
792
Comment
CAS-BOT-BC198102
Deschampsia danthonioides
John Thomas Howell
1924-5-30
356
Mariposa
Wawona
1219
Comment
CAS-BOT-BC201707
Deschampsia elongata
John Thomas Howell
1937-7-29
13624
Unknown
Scott Mt. between Trinity & Siskiyou counties
Comment
CAS-BOT-BC253642
Dichanthelium acuminatum subsp. acuminatum
John Thomas Howell
1936-8-25
12771
Trinity
Near Trinity Center
Comment
CAS-BOT-BC254523
Dichanthelium acuminatum subsp. acuminatum
John Thomas Howell
1961-9-22
36729
Butte
Feather River, Oroville
53
Comment
CAS-BOT-BC483268
Dichelostemma capitatum subsp. pauciflorum
John Thomas Howell; Gordon H. True
1968-5-13
44302
Tulare
Cherry Hill Road, Poison Meadow Creek Canyon, Kern Plateau, Sierra Nevada
2255
Comment
CAS-BOT-BC501095
Dichelostemma multiflorum
John Thomas Howell
1967-6-22
42623
Butte
Magalia, Sierra Nevada
701
Comment
SD61068
Dicoria canescens
Darley F. Howe
1964-8-11
Imperial
23.1 miles east of Brawley.
Comment
UCD63943
Digitaria ischaemum
John Thomas Howell
1959-9-20
34642
Butte
Eastern outskirts of Oroville.
60
Comment
CAS-BOT-BC208977
Digitaria ischaemum
John Thomas Howell
1969-10-20
46466
Merced
20th & L Streets, Merced
Comment
CAS-BOT-BC34725
Digitaria sanguinalis
J. T. Howell
1988-8-10
s.n.
Marin
Terra Linda community vegetable gardens
Comment
GH355562
Digitaria sanguinalis
J. T. Howell
1943-09-04 - 1943-09-05
Unknown
Mill Valley
Comment
RSA758908
Digitaria sanguinalis
J. T. Howell
1989-10-16
s.n.
Marin
Terra Linda, Freitas Park, edge of lawn.
Comment
CAS-BOT-BC150920
Diplacus bigelovii var. bigelovii
John Thomas Howell; Gordon H. True
1967-5-29
42338
Tulare
Midway between Chimney and Lamont meadows, Kern Plateau
1889
Comment
CAS-BOT-BC153471
Diplacus layneae
J. T. Howell
1939-6-7
4432
Trinity
About 7 1/2 mi. s.e. of Dinsmore's near Van Duzen River
Comment
CAS-BOT-BC152058
Diplacus longiflorus
John Thomas Howell
1927-6-1
2401
Orange
Southern Puente Hills at teh Santa Ana Canyon
152
Comment
CAS-BOT-BC151424
Diplacus nanus
John Thomas Howell
1944-7-15
19810
Glenn
Canyon of Snow Basin Creek
Comment
CAS-BOT-BC151362
Diplacus tricolor
John Thomas Howell
1929-5-19
s.n.
Merced
8 miles ne. of Merced
Comment
CAS-BOT-BC154242
Diplacus whitneyi
John Thomas Howell; Gordon H. True
1970-7-29
47136
Tulare
Pine Flat. Kern Plateau
2194
Comment
RSA223670
Dipsacus sativus
J. T. Howell
1964-6-29
40820
San Luis Obispo
Near St. Paul's Episcopal Church, Cambria.
Comment
CAS-BOT-BC208630
Distichlis spicata
John Thomas Howell
1955-7-19
30789
Plumas
Vinton - Sierra Nevada
1505
Comment
CAS-BOT-BC208680
Distichlis spicata
John Thomas Howell
1958-5-29
33616
Inyo
Bishop
1264
Comment
OBI22326
Distichlis spicata
John Thomas Howell
1948-6-15
24375
San Luis Obispo
San Juan River Valley
366
Comment
UCD64627
Distichlis spicata var. stricta
John Thomas Howell
1967-4-30
42112
Tulare
About 4.5 miles ENE of Pixley, Valley Grassland.
83
Comment
CAS-BOT-BC126879
Dodecatheon alpinum
John Thomas Howell; Gordon H. True
1966-7-13
41947
Tulare
Pipe Spring on Cherry Hill Road, west side of Big Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC126893
Dodecatheon alpinum
John Thomas Howell
1940-8-2
15911
Tulare
West of Reflection Lake
3505
Comment
CAS-BOT-BC136184
Dodecatheon alpinum
John Thomas Howell
1941-7-31
16548
Madera
Agnew Pass Trail
Comment
SD61013
Dodecatheon alpinum subsp. majus
Darley F. Howe
1964-7-31
3899
Lassen
Meadow above Blue Lake, Warner Mts., Modoc National Forest
1890
Comment
CAS-BOT-BC41990
Draba albertina
John Thomas Howell
1946-7-28
22817
Inyo
Rock Creek Lake Basin. Gem Lake.
3352
Comment
CAS-BOT-BC41829
Draba breweri
John Thomas Howell
1946-7-26
22718
Inyo
Mono Mesa.
3657
Comment
CAS-BOT-BC41856
Draba breweri
John Thomas Howell
1948-7-28
25128
Tulare
Center Basin.
3657
Comment
UC856156
Draba lemmonii var. lemmonii
John Thomas Howell
1938-8-11
14536
Tuolumne
Mt. Dana
3810
Comment
CAS-BOT-BC41329
Draba sierrae
John Thomas Howell
1946-7-18
22506
Inyo
South side of Mono Pass.
3627
Comment
CAS-BOT-BC41352
Draba verna
John Thomas Howell; Gordon H. True; Barbara Menzies; Roberta Shockey
1978-4-5
52809
Calaveras
Sierra Nevada. Camp Nine Road, northeast of Vallecito.
609
Comment
CAS-BOT-BC159662
Drymocallis glandulosa
John Thomas Howell
1964-4-28
40560
Mariposa
Just south of Mormon [Morman] Bar on road to Ben Hur - Sierra Nevada
1828
Comment
CAS-BOT-BC159622
Drymocallis glandulosa var. glandulosa
John Thomas Howell; Gordon H. True
1966-7-12
41793
Kern
Bartolas Country 7.2 miles south of Cherry Hill and Cannell Meadow Roads, Kern Plateau, Sierra Nevada
2164
Comment
CAS-BOT-BC159345
Drymocallis lactea var. lactea
John Thomas Howell
1941-8-1
16658
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC109505
Dudleya abramsii subsp. calcicola
John Thomas Howell
1962-5-22
37264
Kern
Sierra Nevada. Kern River Canyon, above Roads End.
1097
Comment
SD114461
Dudleya arizonica
Darley F. Howe
1951-5-24
2006
San Diego
Oriflamme Canyon
Comment
CAS-BOT-BC410849
Dudleya caespitosa
John Thomas Howell
1933-8-19
11601
Monterey
Pt. Lobos
Comment
UC1176739
Dudleya cymosa
John Thomas Howell
1943-5-22
18132
Marin
Fairfax Hills
Comment
UC1176732
Dudleya farinosa
John Thomas Howell
1939-7-2
14824 A
Marin
Elk Valley
Comment
CAS-BOT-BC109720
Dudleya saxosa subsp. saxosa
John Thomas Howell
1928-6-17
4007
Inyo
Surprise Canyon, Panamint Mountains.
2164
Comment
SD114483
Dudleya viscida
Darley F. Howe
1954-6-27
2417
San Diego
Near mouth of San Luis Rey River on north bank just east of bridge north of Oceanside.
Comment Read comments Jun 15 2015
SD112655
Dysphania botrys
D. F. Howe
1956-7-1
2550
Los Angeles
Tujunga Can, San Gabriel Mts.
456
Comment
SD46366
Dysphania botrys
D. F. Howe
1956-7-1
Los Angeles
Tujunga Canyon
Comment
CAS-BOT-BC197163
Echinochloa crus-galli
John Thomas Howell
1963-8-5
39947
Monterey
About 5 miles north of King City
Comment
CAS-BOT-BC197188
Echinochloa crus-galli
John Thomas Howell
1956-9-29
31888
San Francisco
San Francisco. Golden Gate Park east of Academy buildings
Comment
SD112626
Eclipta prostrata
Darley F. Howe
1938-9-18
739
San Diego
Savage Lake
Comment
UCD61209
Ehrharta erecta
John Thomas Howell
1958-5-12
33026
Alameda
University of California near Center Street entrance, Berkeley.
Comment
SD112310
Eleocharis bella
Darley F. Howe
1941-7-3
1126
San Diego
Sweetwater Valley at Descanso
Comment
CAS-BOT-BC112990
Eleocharis macrostachya
John Thomas Howell; Gordon H. True
1970-6-26
46888
Tulare
Dry Lake on Cherry Hill Road, Kern Plateau
2346
Comment
CAS-BOT-BC113214
Eleocharis parishii
John Thomas Howell
1928-6-20
4055
Inyo
Wet soil, Canyon near the Burro Mine, Panamint Mts.
1066
Comment
CAS-BOT-BC113232
Eleocharis parishii
John Thomas Howell
1962-9-25
38894
Kern
Kern River bed 3 miles north of Kernville.
822
Comment
CAS-BOT-BC113200
Eleocharis parishii
John Thomas Howell
1965-10-13
41409
Marin
John Thomas Howell Botanical Garden, Tiburon
Comment
CAS-BOT-BC112094
Eleocharis quinqueflora
John Thomas Howell
1946-7-15
22389
Inyo
Between Mosquito Flat and Ruby Lake, Rock Creek Lake Basin.
Comment
CAS-BOT-BC112141
Eleocharis quinqueflora
John Thomas Howell
1942-8-1
17528
Tulare
Sky Parlor Meadow, Chagoopa Plateau
Comment
RSA127233
Elymus X gouldii
J. T. Howell
1946-6-30
22143
Marin
Rodeo Lagoon
Comment
CAS-BOT-BC203838
Elymus X hansenii
John Thomas Howell
1956-6-24
31619
San Francisco
Summit ridge of Bayview Hills, San Francisco
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-BC237636
Elymus X saundersii
John Thomas Howell
1946-7-29
22833
Inyo
Rock Creek Lake Basin. Box Lake
3200
Comment
CAS-BOT-BC227512
Elymus elymoides
John Thomas Howell
1941-8-2
16679
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC227606
Elymus elymoides
John Thomas Howell
1977-6-20
52413
Plumas
On the peninsula of Lake Almanor
1371
Comment
SD102805
Elymus elymoides var. brevifolius
Darley Howe
1978-6-20
Inyo
Inyo Mountains
1981
Comment
RSA223381
Elymus glaucus
J. T. Howell
1963-8-5
39957
Monterey
on rocky road-cut about 5 miles east of King City on Lonoak Road.
Comment
CAS-BOT-BC203429
Elymus glaucus subsp. glaucus
John Thomas Howell
1962-6-15
37488
Butte
Magalia
731
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-BC203757
Elymus glaucus subsp. glaucus
John Thomas Howell; Gordon H. True
1967-7-3
42792
Tulare
West of Lamont Meadow, Kern Plateau
1706
Comment
CAS-BOT-BC203783
Elymus glaucus subsp. glaucus
John Thomas Howell
1944-8-11
20309 A
Tuolumne
Dog Creek, Tuolumne Meadows
Comment
CAS-BOT-BC206513
Elymus glaucus subsp. glaucus
John Thomas Howell; Walter Knight; Irja Knight
1966-7-26
1586
Plumas
Fern Glen - Butterfly Botanical Area and Vicinity
1097
Comment
CAS-BOT-BC206517
Elymus glaucus subsp. glaucus
John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight
1967-7-10
2213
Plumas
Mouth of Butterfly Creek - Butterfly Botanical Area and Vicinity
883
Comment
CAS-BOT-BC206520
Elymus glaucus subsp. glaucus
John Thomas Howell
1961-6-21
36674
Plumas
Greenville - Sierra Nevada
1097
Comment
CAS-BOT-BC206736
Elymus glaucus subsp. glaucus
John Thomas Howell
1947-7-18
23427
Los Angeles
Big Pines, San Gabriel Mts.
2103
Comment
CAS-BOT-BC206786
Elymus glaucus subsp. glaucus
John Thomas Howell
1943-7-26
18859
Nevada
West side of Donner Pass near Norden.
2133
Comment
UC1106108
Elymus glaucus subsp. virescens
John Thomas Howell
1946-7-7
22221
Marin
Mt. Tamalpais; West Peak
Comment
SDSU5365
Elymus stebbinsii
D. F. Howe
1962-8-15
3470
Fresno
Shaver Lake, Sierra National Forest
1676
Comment
GH365147
Elymus trachycaulus
J. T. Howell
1942-8-5
17715
Unknown
Between Big Arroyo and Chagoopa Plateau
Comment
SEINET10930763
Elymus trachycaulus
John Thomas Howell, Gordon H. True
1968-6-10
Howell 44549
Nevada
Quincy, el. Plumas Co.
1036
Comment
CAS-BOT-BC213513
Elymus trachycaulus subsp. trachycaulus
John Thomas Howell
1969-8-25
45917
Tulare
Mineral King - Sierra Nevada
2377
Comment
CAS-BOT-BC213517
Elymus trachycaulus subsp. trachycaulus
John Thomas Howell; Gordon H. True
1966-7-11
41691
Tulare
Poison Meadow, Kern Plateau - Sierra Nevada
2286
Comment
CAS-BOT-BC213520
Elymus trachycaulus subsp. trachycaulus
John Thomas Howell
1942-8-5
17715
Tulare
Between Big Arroyo and Chagoopa Plateau
Comment
UCD62669
Elymus trachycaulus subsp. trachycaulus
John Thomas Howell
1942-7-26
17237
Tulare
Mineral King.
Comment
SDSU6075
Emmenanthe penduliflora
D. F. Howe
1976-6-2
4920
Ventura
Potrero road 2 miles west of Reino Road, Ventura Co.
122
Comment
SD112391
Encelia farinosa
Darley F. Howe
1937-4-10
475
San Diego
Borrego Valley
Comment
CAS-BOT-BC81802
Ephedra nevadensis
John Thomas Howell
1962-5-21
37146
Kern
Northeast of Lake Isabella
792
Comment
NY70339
Ephedra nevadensis
J. T. Howell
1958-5-28
33556
Inyo
Sierra Nevada: Bishop Creek
1950.7
Comment
RSA53905
Ephedra trifurca
D. F. Howe
1949-3-19
s.n.
Imperial
Between Holtvill and Yuma.
Comment Read comments Apr 12 2013
CAS-BOT-BC81943
Ephedra viridis
John Thomas Howell
1930-5-13
5028
Kern
Kern Canyon, 7 miles above Kernville
844
Comment
SDSU8810
Epilobium angustifolium subsp. circumvagum
D. F. Howe
1961-8-1
3102
Humboldt
6 miles north of Trinidad on #101.
Comment
SDSU8891
Epilobium brachycarpum
D. F. Howe
1963-8-6
3703
Del Norte
Smith River, 18.2 miles northeast of entrance to Six Rivers National Forest on #199.
305
Comment
CAS-BOT-BC166126
Epilobium canum
John Thomas Howell
1962-7-11
38584
Kern
Summit ridge, Black Mt., Greenhorn Mountains
2255
Comment
CAS-BOT-BC166166
Epilobium canum subsp. canum
John Thomas Howell
1925-11-1
1536
Contra Costa
Moraga Ridge, Oakland Hills
Comment
CAS-BOT-BC166159
Epilobium canum subsp. canum
John Thomas Howell
1932-10-16
10830
Alameda
6 miles from Livermore on Tesla Road
Comment
CAS-BOT-BC166556
Epilobium canum subsp. latifolium
John Thomas Howell; Gordon H. True
1966-7-13
41914
Tulare
Canyon of Poison Meadow Creek on Cherry Hill Road, Kern Plateau
2194
Comment
CAS-BOT-BC166880
Epilobium canum subsp. latifolium
John Thomas Howell
1940-7-28
15610
Fresno
Zigzags east of Kings Canyon, Bubbs Creek
Comment
CAS-BOT-BC171931
Epilobium canum subsp. latifolium
John Thomas Howell
1947-7-18
23415
Los Angeles
Blue Ridge, San Gabriel Mts.
2590
Comment
UC793593
Epilobium ciliatum subsp. ciliatum
D. F. Howe
1947-8-28
29
San Bernardino
S. Gorgonio Trail San Bernardino Mts.
2438
Comment
RSA94098
Epilobium hallianum
J. T. Howell
1947-6-26
23290
Sonoma
Cunningham Marsh.
Comment
RSA37692
Epilobium oregonense
J. T. Howell
1948-7-25
25001
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows.
2896
Comment
RSA512825
Epilobium paniculatum
J. T. Howell, Gordon H. True
1973-7-31
50028
Lassen
Sierra Nevada: On road from Janesville to Thompson Peak, Diamond Range
1738
Comment
SD130491
Epilobium paniculatum
John Thomas Howell
1958-7-23
33804
Fresno
Sierra Nevada, Simpson Meadow, Middle Fork of the Kings River.
1829
Comment
CAS-BOT-BC57999
Equisetum arvense
John Thomas Howell
1963-7-9
39652
El Dorado
Near foot of Echo Summit grade, 1 mi. sw. of Meyers.
2011
Comment
UC1177506
Equisetum arvense
John Thomas Howell
1944-3-26
19340
Marin
Inverness
Comment
SD129857
Equisetum hyemale subsp. affine
Melanie Howe, David K. Faulkner
1990-6-13
93
Inyo
Surprise Canyon
900
Comment
CAS-BOT-BC57211
Equisetum hyemale subsp. affine
John Thomas Howell
1931-9-26
8088
Sonoma
Creek bottom at Northwood near Monte Rio on the Russian River
Comment
CAS-BOT-BC57303
Equisetum laevigatum
John Thomas Howell; Gordon H. True
1973-8-1
50235
Lassen
Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville
2133
Comment
CAS-BOT-BC57457
Equisetum laevigatum
John Thomas Howell
1931-4-12
6271
Santa Barbara
Ravenswood, Santa Cruz Island
Comment
CAS-BOT-BC284135
Eragrostis pectinacea var. pectinacea
John Thomas Howell
1954-9-23
30109
Marin
Milton H. Esberg place, Ross
Comment
CAS-BOT-BC284200
Eragrostis pectinacea var. pectinacea
John Thomas Howell
1967-11-3
44046 A
Tulare
About 4.5 miles east-northeast of Pixley
83
Comment
SDSU3857
Erechtites glomeratus
D. F. Howe
1962-7-30
3374
Mendocino
1.8 miles north of Pt. Arena on #1.
Comment
CAS-BOT-BC168357
Eremogone congesta var. congesta
John Thomas Howell
1949-7-22
25585
Tulare
Rock Creek to Guyot Creek
3139
Comment
SEINET12875573
Eremogone congesta var. subcongesta
John Thomas Howell, Alice Eastwood
1940-1
8110
Modoc
Surprise
Comment
CAS-BOT-BC181680
Eremogone kingii var. glabrescens
John Thomas Howell
1949-8-5
26046
Inyo
Army Pass
3657
Comment
CAS-BOT-BC160139
Eremothera boothii subsp. decorticans
John Thomas Howell
1933-4-23
11154
San Benito
10 miles from San Benito on road to Hernandez
Comment
CAS-BOT-BC514967
Eriastrum sapphirinum subsp. dasyanthum
John Thomas Howell
1928-6-10
3879
Los Angeles
San Gabriel Mts: Monrovia Canyon, near Deer Park
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-BC286881
Ericameria ericoides
John Thomas Howell
1927-9-24
3114
Orange
Hills on n. side of Santa Ana Canon [Canyon]
213
Comment
CAS-BOT-BC286923
Ericameria ericoides
John Thomas Howell
1963-9-4
40336
Monterey
Moss Landing
Comment
CAS-BOT-BC287470
Ericameria greenei
John Thomas Howell
1960-8-19
36157 A
Tehama
Lassen Volcanic National Park. Brokeoff Mt
2682
Comment
SD112586
Ericameria linearifolia
Darley F. Howe
1939-4-11
776
San Diego
hillside east of Banner Grade
Comment
SD81214
Ericameria nauseosa var. mohavensis
Darley F. Howe
1971-10-6
Kern
North of Tejon Pass.
975
Comment
CAS-BOT-BC294137
Ericameria nauseosa var. speciosa
John Thomas Howell
1943-8-5
19082
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC294293
Ericameria nauseosa var. speciosa
John Thomas Howell
1959-9-21
34787
Plumas
Rich Bar
762
Comment
CAS-BOT-BC294297
Ericameria nauseosa var. speciosa
John Thomas Howell
1959-9-25
34999
Plumas
2 miles east of Portola
1484
Comment
CAS-BOT-BC294338
Ericameria nauseosa var. speciosa
John Thomas Howell; Gordon H. True
1966-7-13
41876
Tulare
Canyon of Poison Meadow Creek on Cherry Hill Road, Kern Plateau
1828
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
UCD131488
Ericameria nauseosa var. speciosa
John Thomas Howell
1960-8-20
36283
Plumas
Kelly Camp, near Drakesbad.
1615
Comment
CAS-BOT-BC293021
Ericameria parryi var. nevadensis
John Thomas Howell
1977-8-11
52693
Plumas
North end of Frenchmans Reservoir
1706
Comment
CAS-BOT-BC293030
Ericameria parryi var. nevadensis
John Thomas Howell
1974-9-20
50903
Plumas
About 2 miles from Spring Garden on road to Quincy
1158
Comment
JEPS75242
Ericameria parryi var. nevadensis
John Thomas Howell
1959-9-24
34961
Plumas
near Blairsden
1341
Comment
CAS-BOT-BC293047
Ericameria parryi var. vulcanica
John Thomas Howell
1962-9-24
38862
Kern
Near Tiger Flat, Greenhorn Mts.
1981
Comment
RSA842
Ericameria pinifolia
J. T. Howell
1927-10-23
770
Orange
On road to Aliso Canyon Rancho Santa Ana.
152
Comment
RSA44468
Ericameria suffruticosa
J. T. Howell
1947-8-12
24037
Inyo
Fourth Lake, Big Pine Lakes
3293
Comment
JEPS75286
Ericameria teretifolia
John Thomas Howell
1970-11-8
47505
Kern
above Lake Isabella (on road from Weldon to Kernville)
792
Comment
SDSU6301
Ericameria teretifolia
D. F. Howe
1940-11-2
1045
Inyo
Cottonwood Creek, east sie of Sierra Nevadas.
Comment
UC895582
Erigeron aliceae
John Thomas Howell
14879
Siskiyou
Marble Mts., Spirit Lake Marble Mts., Spirit Lake
Comment
CAS-BOT-BC294793
Erigeron breweri var. breweri
John Thomas Howell
1940-8-2
15875
Tulare
Slope north of Reflection Lake
3352
Comment
CAS-BOT-BC294926
Erigeron clokeyi
John Thomas Howell
1946-7-16
22437
Inyo
Box Lake, Rock Creek Lake Basin
3200
Comment
CAS-BOT-BC300369
Erigeron eatonii var. nevadincola
John Thomas Howell; R. C. Barneby
1954-5-14
29547
Sierra
Sierra Valley between Sierraville and Loyalton
Comment
CAS-BOT-BC308776
Erigeron foliosus var. foliosus
John Thomas Howell; Gordon H. True
1969-9-30
46381
Tulare
Cherry Hill Road 4 miles from Burton Camp, canyon of Poison Meadow Creek, Kern Plateau, Sierra Nevada
2194
Comment
SD112283
Erigeron foliosus var. foliosus
Darley F. Howe
1935-6-16
San Diego
Japatul
Comment
CAS-BOT-BC295156
Erigeron inornatus
John Thomas Howell
1960-8-20
36222
Tehama
Near Lassen Volcanic National Park. Morgan
1463
Comment
CAS-BOT-BC295261
Erigeron lonchophyllus
John Thomas Howell
1946-7-17
22485
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC295326
Erigeron lonchophyllus
John Thomas Howell; Gordon H. True
1969-9-30
46404
Tulare
Pipe Spring on Cherry Hill Road, west side of Big Meadow, Kern Plateau
2407
Comment
CAS-BOT-BC300217
Erigeron pygmaeus
John Thomas Howell
1950-7-22
27220
Tulare
Summit ridge, Olancha Peak
3698
Comment
CAS-BOT-BC300220
Erigeron pygmaeus
John Thomas Howell
1950-7-22
27220
Tulare
Summit ridge, Olancha Peak
3698
Comment
CAS-BOT-BC300231
Erigeron pygmaeus
John Thomas Howell
1949-7-26
25803
Tulare
Golden Trout Creek
2941
Comment
SD53208
Eriodictyon californicum
D. F. Howe
1962-5-19
3284
Colusa
13 miles west of Williams on # 20
213
Comment
CAS-BOT-BC248486
Eriogonum angulosum
John Thomas Howell
1930-5-8
4759
Monterey
7 miles north of San Bernardo
Comment
CAS-BOT-BC248647
Eriogonum apricum
John Thomas Howell
1954-9-5
30033
Amador
Ione hills 2 miles nne. of BuenaVista [Buena Vista]
91
Comment
RSA66053
Eriogonum argillosum
J. T. Howell
1933-4-23
11158
San Benito
11 miles from Hernandez on road to San Benito.
Comment
CAS-BOT-BC241600
Eriogonum baileyi var. baileyi
John Thomas Howell
1969-9-15
46219
Mono
Leavitt Meadow
2194
Comment
CAS-BOT-BC248783
Eriogonum baileyi var. baileyi
John Thomas Howell; Gordon H. True
1967-8-8
43608
Inyo
Nine Mile [Ninemile] Canyon, Kern Plateau
1676
Comment
CAS-BOT-BC248771
Eriogonum baileyi var. baileyi
John Thomas Howell
1931-8-26
8017
Nevada
Truckee Canyon, 1 mile e. of Floristan
Comment
CAS-BOT-BC248787
Eriogonum baileyi var. baileyi
John Thomas Howell
1950-7-26
27375 A
Inyo
Olanche [Olancha] Pass to Sage Flat
2438
Comment
CAS-BOT-BC254171
Eriogonum baileyi var. baileyi
John Thomas Howell
1970-11-8
47528
Kern
East end of east arm of Lake Isabella, Sierra Nevada
792
Comment
LA206753
Eriogonum baileyi var. baileyi
John Thomas Howell;
1932-8-6
507
Inyo
Tom's place, near Rock Creek Holes
218
Comment
RSA137111
Eriogonum baileyi var. baileyi
J. T. Howell
1957-6-24
s.n.
Kern
Open desert 5 miles north of Mojave
976
Comment
UC1042586
Eriogonum baileyi var. baileyi
John Thomas Howell
1950-7-27
27406
Mono
2 1/2 mi n Bridgeport
1965
Comment
CAS-BOT-BC244069
Eriogonum brachyanthum
John Thomas Howell
1963-8-21
40237
Inyo
On Whitney Portal Road, Sierra Nevada
1981
Comment
CAS-BOT-BC241742
Eriogonum brachypodum
John Thomas Howell
1928-6-20
4064
Inyo
Jail Canon [Canyon] near the Burro Mine, Panamint Mts.
1066
Comment
CAS-BOT-BC248804
Eriogonum compositum var. compositum
John Thomas Howell
1943-8-6
19119
Glenn
Black Butte
Comment
CAS-BOT-BC248823
Eriogonum compositum var. compositum
John Thomas Howell
1945-6-20
21101
Lake
Pinnacle Rock, Bartlett Mountain
Comment
CAS-BOT-BC242694
Eriogonum covilleanum
John Thomas Howell
1963-8-7
40093
Monterey
Mustang Grade between Mustang Summit and Priest Valley
Comment
CAS-BOT-BC256093
Eriogonum deflexum var. baratum
John Thomas Howell
1962-5-21
37176
Kern
Northeast of Lake Isabella, Sierra Nevada
792
Comment
RSA137117
Eriogonum deflexum var. baratum
J. T. Howell
1957-6-24
s.n.
Kern
2.5 miles SSW of Red Rock Canyon.
640
Comment
SD114072
Eriogonum elongatum var. elongatum
Darley F. Howe
1945-11-22
1384
San Diego
Bonita
Comment
CAS-BOT-BC253214
Eriogonum fasciculatum var. fasciculatum
John Thomas Howell
1928-4-21
3751
Ventura
Pt. Mugu
Comment
CAS-BOT-BC253295
Eriogonum fasciculatum var. foliolosum
John Thomas Howell
1947-7-22
23471
San Bernardino
Santa Ana River near South Fork, San Bernardino Mts.
1981
Comment
RSA136749
Eriogonum fasciculatum var. foliolosum
J. T. Howell
1955-7-8
30636
Monterey
Canyon of Arroyo Seco River, 3.5 miles from Santa Lucia Camp on Arroyo Seco Road
732
Comment
SD114064
Eriogonum fasciculatum var. polifolium
Darley F. Howe
1951-5-24
2147
San Diego
Oriflamme Canyon
Comment
CAS-BOT-BC256745
Eriogonum heermannii var. occidentale
John Thomas Howell
1931-9-7
8072
San Benito
San Benito Canyon, 8 miles nw. of Hernandez
Comment
CAS-BOT-BC259553
Eriogonum hirtiflorum
John Thomas Howell; Gordon H. True
1966-7-11
41605
Tulare
Canyon of Poison Meadow Creek on Cherry Hill Road, Kern Plateau, Sierra Nevada
1920
Comment
CAS-BOT-BC259216
Eriogonum incanum
John Thomas Howell
1941-7-24
16435
Madera
Near Garnet Lake
2956
Comment
UCD100164
Eriogonum inerme
John Thomas Howell
1962-5-22
37373
Tulare
1.5 miles east of Johnsondale.
1371
Comment
NY762748
Eriogonum inflatum
J. T. Howell
1981-8-13
54567
Mono
0.7 mile south of Paradise Camp on Old Sherwin Grade Road
1463.0
Comment
CAS-BOT-BC259141
Eriogonum latifolium
John Thomas Howell
1931-6-17
6728
Del Norte
5 miles s. of Crescent City
Comment
SEINET4463948
Eriogonum latifolium var. alternans
J. T. Howell
1933-1
11592
Unknown
Comment
CAS-BOT-BC259311
Eriogonum lobbii
John Thomas Howell
1944-8-10
20289
Mono
Dana Plateau
Comment
SD22299
Eriogonum luteolum
John Thomas Howell
1930-8-24
5458
Lake
Dry field 2 miles west of Middtown on road to Adams Springs
Comment
CAS-BOT-BC263712
Eriogonum luteolum var. pedunculatum
John Thomas Howell
1964-4-29
40670
Mariposa
4 miles from Mariposa on road to Mt. Bullion, Sierra Nevada
670
Comment
CAS-BOT-BC263115
Eriogonum maculatum
John Thomas Howell
1938-8-7
14368
Mono
Sherwin Grade
Comment
SDSU6800
Eriogonum maculatum
D. F. Howe
1946-6-3
1408
San Bernardino
About three miles southeast of Victorville.
Comment
SD114147
Eriogonum maculatum
Darley F. Howe
1960-4-27
2907
Inyo
11.5 miles east of Tecopa
Comment
CAS-BOT-BC270910
Eriogonum microthecum var. ambiguum
John Thomas Howell
1947-8-16
24155
Inyo
Big Pine Lakes Trail
2743
Comment
CAS-BOT-BC268712
Eriogonum microthecum var. laxiflorum
John Thomas Howell
1938-8-7
14325
Mono
Crooked Creek
2057
Comment
CAS-BOT-BC197798
Eriogonum microthecum var. microthecum
John Thomas Howell
1934-6-13
12098
Modoc
Patterson Mill Road, Warner Mts.
1676
Comment
POM179710
Eriogonum nudum var. auriculatum
J. T. Howell
1930-7-4
5337
Contra Costa
Rocky hilltop in the north Berkeley Hills.
Comment
CAS-BOT-BC261346
Eriogonum nudum var. deductum
John Thomas Howell
1950-7-21
27163
Tulare
Monache Mt.
2590
Comment
CAS-BOT-BC266091
Eriogonum nudum var. deductum
John Thomas Howell
1925-7-1
1293
El Dorado
Highway above Armstrong's Emerald Bay, Lake Tahoe
Comment
UC618509
Eriogonum nudum var. deductum
John Thomas Howell
1938-8-8
14425
Mono
Mammoth Lakes Basin
Comment
CAS-BOT-BC264856
Eriogonum nudum var. nudum
John Thomas Howell; Gordon H. True
1970-7-28
47039
Tulare
East side of Big Meadow on loop road south of North Manter Pass Trail, Kern Plateau, Sierra Nevada
2377
Comment
CAS-BOT-BC269826
Eriogonum nudum var. pubiflorum
John Thomas Howell
1934-7-8
12498
Lassen
Spalding's, Eagle Lake
Comment
NY572532
Eriogonum nummulare
J. T. Howell
1981-8-13
54579
Mono
Just north of Old Sherwin Hill Summit on Old Sherwin Grade Road
1950.7
Comment
UCD100757
Eriogonum palmerianum
John Thomas Howell
1955-7-19
30806
Plumas
Vinton.
1511
Comment
CAS-BOT-BC265597
Eriogonum parishii
John Thomas Howell; Gordon H. True
1967-7-5
43099
Tulare
Naer road bridge on South Fork of Kern River in Kennedy Meadows, Kern Plateau, Sierra Nevada
1889
Comment
CAS-BOT-BC265593
Eriogonum parishii
John Thomas Howell; Gordon H. True
1967-7-4
43038
Tulare
Fish Creek about 3.5 miles south of Troy Meadow, Kern Plateau, Sierra Nevada
2255
Comment
RSA219
Eriogonum plumatella var. jaegeri
J. T. Howell
1927-4-1
535
San Bernardino
Morongo Valley
915
Comment
CAS-BOT-BC258096
Eriogonum polypodum
John Thomas Howell
1949-7-30
25905
Tulare
Tunnel to Ramshaw Meadow
2712
Comment
CAS-BOT-BC267732
Eriogonum roseum
John Thomas Howell
1931-10-11
8140
Mariposa
Bootjack
Comment
CAS-BOT-BC268622
Eriogonum spergulinum var. reddingianum
John Thomas Howell
1955-7-7
30536
Monterey
North slope of summit of Junipero Serra Peak, Santa Lucia Mts.
1767
Comment
CAS-BOT-BC272634
Eriogonum spergulinum var. reddingianum
John Thomas Howell
1941-7-31
16606
Madera
Ridge nw. of San Joaquin Mt.
Comment
SDSU6765
Eriogonum spergulinum var. spergulinum
D. F. Howe
1964-7-20
3846
Fresno
3.0 miles east of Huntington Lake, Sierra National Forest.
2530
Comment
CAS-BOT-BC265204
Eriogonum umbellatum var. speciosum
John Thomas Howell
1955-7-16
30665
Trinity
1.5 miles north of Douglas City
579
Comment
RSA88594
Eriogonum ursinum
J. T. Howell
1951-6-27
27630
Plumas
Jamison Creek
1829
Comment
CAS-BOT-BC264131
Eriogonum vimineum
John Thomas Howell
1955-7-19
30732
Plumas
Portola, west of town, Sierra Nevada
1478
Comment
CAS-BOT-BC262428
Eriogonum viridescens
John Thomas Howell
1930-5-13
4962
Kern
Red Rock Canyon
Comment
RSA423137
Eriogonum viridescens
J. T. Howell
1948-6-14
s.n.
Kern
Cedar Canyon.
457
Comment
CAS-BOT-BC261857
Eriogonum wrightii var. subscaposum
John Thomas Howell
1958-7-25
33922
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC261980
Eriogonum wrightii var. subscaposum
John Thomas Howell; Gordon H. True
1967-9-18
43797
Tulare
4.5 miles from Lamont Meadow on road to Long Valley, Kern Plateau
1584
Comment
CAS-BOT-BC264946
Eriogonum wrightii var. subscaposum
John Thomas Howell
1963-8-20
40188
Inyo
Whitney Portal, Sierra Nevada
2438
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
SD51378
Eriogonum wrightii var. subscaposum
Darley F. Howe
1961-8-10
3151
El Dorado
Kirkwood on Carson Pass road, #88
2347
Comment
SDSU4079
Eriophyllum ambiguum var. ambiguum
D. F. Howe
1964-5-16
3765
Kern
Piute Mts.
1829
Comment
CAS-BOT-BC304244
Eriophyllum confertiflorum
John Thomas Howell
1958-5-22
33107
Tulare
Kern River Canyon 6 miles S of Roads End Post Office
944
Comment
SEINET5711482
Eriophyllum confertiflorum
Melanie Howe
1988-1
14
San Diego
Vacant lot next to parking lot of Broadway Animal Hospital, 380 Broadway, El Cajon.; El Cajon
Comment
UC1176923
Eriophyllum confertiflorum var. confertiflorum
John Thomas Howell
1950-6-11
26628
Marin
Throckmorton Ridge Mt. Tamalpais, Throckmorton Ridge
Comment
CAS-BOT-BC300937
Eriophyllum jepsonii
John Thomas Howell
1937-5-20
12985
San Benito
10 miles east of Paicines
Comment
CAS-BOT-BC300968
Eriophyllum lanatum var. achilleoides
John Thomas Howell
1923-11-12
244
Contra Costa
Mt. Diablo
Comment
CAS-BOT-BC308138
Eriophyllum lanatum var. achilleoides
John Thomas Howell
1934-7-8
12481
Lassen
Spalding's, Eagle Lake
Comment
SDSU4093
Eriophyllum lanatum var. achilleoides
D. F. Howe
1964-7-31
3906
Modoc
Modoc National Forest 8.5 miles from entrance on road from Likely, Warner Mts.
1554
Comment
CAS-BOT-BC301294
Eriophyllum lanatum var. arachnoideum
John Thomas Howell
1930-7-27
5399
Sonoma
1 mile north of Fort Ross
Comment
SD88468
Eriophyllum lanatum var. arachnoideum
Darley F. Howe
1972-6-30
Del Norte
5.5 miles south of north entrance to Six Rivers National Forest.
Comment
CAS-BOT-BC301524
Eriophyllum lanatum var. integrifolium
John Thomas Howell
1958-5-25
33353
Inyo
Carroll Creek
1676
Comment
SD53407
Eriophyllum lanatum var. lanceolatum
Darley F. Howe
1962-8-5
3396
Siskiyou
15.2 miles east of Happy Camp.
550
Comment
CAS-BOT-BC301775
Eriophyllum multicaule
John Thomas Howell; Gordon H. True
1969-5-13
s.n.
Tulare
Spanish Needle Creek road, Kern Plateau
1280
Comment
SDSU4105
Eriophyllum multicaule
D. F. Howe
1960-4-9
2839
San Luis Obispo
Just east of Morro Bay.
Comment
POM203446
Eriophyllum staechadifolium
J. T. Howell
1931-4-13
6324
Santa Barbara
Santa Cruz Island. near west end.
Comment
SD98832
Eriophyllum staechadifolium
Darley F. Howe
1977-5-19
4650
Monterey
Sea Bluff near mouth of Carmel River.
Comment
RSA51279
Erodium brachycarpum
J. T. Howell
1947-4-23
23075
Marin
East side of Drakes Estero, Point Reyes Peninsula.
Comment
UC648303
Eryngium aristulatum var. aristulatum
John Thomas Howell
1933-8-27
11619
Sonoma
lands bordering San Pablo Bay s.w. Sonoma
Comment
CAS-BOT-BC218471
Eryngium spinosepalum
John Thomas Howell; R. C. Barneby
1954-5-8
29203
Tulare
Tule River Valley, 4.5 miles below Springville, Sierra Nevada
243
Comment
CAS-BOT-BC40788
Erysimum capitatum
John Thomas Howell
1938-5-29
13873
Madera
4.5 miles from Coarse Gold on road to O'Neal's.
Comment
CAS-BOT-BC40868
Erysimum capitatum
John Thomas Howell
1933-8-18
11576
Monterey
14 miles east of Jamesburg. Santa Lucia Mountains.
Comment
CAS-BOT-BC58573
Erysimum capitatum var. capitatum
John Thomas Howell
1934-6-30
12285
Modoc
Duncan Horse Camp.
1355
Comment
SD103784
Erysimum capitatum var. capitatum
Darley Howe
1978-6-23
Mono
Twin Lakes
2225
Comment
SDSU2407
Erysimum capitatum var. capitatum
D. F. Howe
1960-4-9
2842
San Luis Obispo
Just east of Morro Bay.
Comment
CAS-BOT-BC54993
Erysimum perenne
John Thomas Howell
1948-7-20
24803
Fresno
Mount Gould. Fresno-Inyo County line.
3810
Comment
CAS-BOT-BC55025
Erysimum perenne
John Thomas Howell
1949-8-5
26069
Inyo
Army Pass.
3657
Comment
CAS-BOT-BC153573
Erythranthe floribunda
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-27
53117
Alpine
Canyon of East Fork of Carson River on road to Wolf Creek Meadows
1767
Comment
SD88375
Erythranthe guttata
Darley F. Howe
1972-7-6
Siskiyou
1.3 miles south of Oregon state line on road to Happy Camp
Comment
CAS-BOT-BC153619
Erythranthe moniliformis
John Thomas Howell
1976-7-16
51910
Plumas
On flood plain of Spanish Creek at mouth of Wapaunsie Creek
1097
Comment
SD128722
Erythranthe moschata
Darley F. Howe
1980-7-6
Siskiyou
1.3 mile south of Oregon state line on road to Happy Camp
1645
Comment
POM196477
Erythronium helenae
J. T. Howell
1926-3-21
1715
Napa
St. Helena Creek below Pattens
457
Comment
UC1042408
Erythronium purpurascens
John Thomas Howell
1951-6-28
27684
Plumas
Eureka Peak
1981
Comment
CAS-BOT-BC110554
Eschscholzia
John Thomas Howell
1959-9-24
34964
Plumas
Sierra Nevada. Sierra Valley near Beckwourth.
1478
Comment
LA206219
Eschscholzia caespitosa
John Thomas Howell;
1931-4-3
6127
Napa
Napa Range, Pope Creek Canyon
Comment
SDSU831
Eschscholzia californica
D. F. Howe
1952-6-22
2242
Monterey
Santa Lucia Mtns.
457
Comment
UC750488
Eschscholzia californica
John Thomas Howell
1945-6-21
21147
Lake
Sawmill Flat Bartlett Mountain
1219
Comment
CAS-BOT-BC403111
Eschscholzia californica
John Thomas Howell
1960-3-26
35209
Kern
Kern Canyon 1 mile above mouth
Comment
CAS-BOT-BC418718
Eschscholzia glyptosperma
John Thomas Howell
1928-4-1
3609
Inyo
4 miles s. of Bradbury Well, Black Mts.
Comment
CAS-BOT-BC310451
Eucephalus ledophyllus var. covillei
John Thomas Howell
1943-8-10
19245
Glenn
Black Butte
Comment
CAS-BOT-BC170785
Eucnide urens
John Thomas Howell
1928-6-16
3960
Inyo
Surprise Canyon, Panamint Mts.
975
Comment
RSA608
Eucrypta chrysanthemifolia
J. T. Howell
1928-6-29
1013
Los Angeles
Near Seminole Hot Springs. Santa Monica Mountains
305
Comment
SDSU6037
Eucrypta micrantha
D. F Howe
1965-5-16
4041
San Bernardino
1372
Comment
SD51415
Euphorbia fendleri
Darley F. Howe
1961-6-18
3036
Inyo
White Mountains, 0.7 miles from Westgard Pass on the road to Big Pine
2190
Comment
UCD142602
Euphorbia maculata
John Thomas Howell
1959-9-20
34671
Butte
Eastern outskirts of Oroville.
60
Comment
CAS-BOT-BC202472
Euphorbia ocellata
John Thomas Howell
1962-5-20
37112
Kern
Kernville
807
Comment
CAS-BOT-BC207062
Euphorbia ocellata
John Thomas Howell
1963-6-21
39488
Monterey
Mustang Grade east of San Lorenzo Creek
Comment
CAS-BOT-BC310511
Eurybia integrifolia
John Thomas Howell
1960-8-19
36130
Tehama
Lassen Volcanic National Park. Brokeoff Mt. Trail
2438
Comment
CAS-BOT-BC310553
Eurybia integrifolia
John Thomas Howell
1950-7-24
27293
Tulare
Monache Creek S. Fk.
2987
Comment
CAS-BOT-BC310557
Eurybia integrifolia
John Thomas Howell; Gordon H. True
1970-7-29
47077
Tulare
South end of Cannell Meadow on road to Pine Flat, Kern Plateau
2316
Comment
CAS-BOT-BC310568
Eurybia integrifolia
John Thomas Howell; Gordon H. True
1966-7-11
41655
Tulare
Poison Meadow, Kern Plateau
2286
Comment
UC1177269
Eurybia radulina
J. Thomas Howell
1946-9-15
23002
Marin
near Potrero Meadows (Mt. Tamalpais); Mt. Tamalpais
Comment
CAS-BOT-BC310659
Euthamia occidentalis
John Thomas Howell
1925-11-28
1580
Solano
Green Valley near Cordelia
Comment
CAS-BOT-BC310689
Euthamia occidentalis
John Thomas Howell
1962-9-25
38897
Kern
Kern River bed 3 miles north of Kernville
822
Comment
RSA942
Euthamia occidentalis
J. T. Howell
1927-10-22
765
Orange
Santa Ana River bottom, Rancho Santa Ana
152
Comment
CAS-BOT-BC413899
Fallopia convolvulus
John Thomas Howell
1956-7-1
31652
San Francisco
Embarcadero and Vallejo St., San Francisco
Comment
SD53226
Festuca arundinacea
D. F. Howe
1962-5-16
Tuolumne
10 miles west of Sonora on #108
395
Comment
CAS-BOT-BC282506
Festuca elmeri
John Thomas Howell
1947-5-4
23121
Marin
San Rafael Hills
Comment
CAS-BOT-BC247717
Festuca idahoensis
John Thomas Howell
1934-7-3
12376
Modoc
5 mi. S of Hackamore.
Comment
CAS-BOT-BC278430
Festuca idahoensis
John Thomas Howell
1934-7-8
12496
Lassen
Spalding's, Eagle Lake
Comment
CAS-BOT-BC278443
Festuca idahoensis
John Thomas Howell
1941-5-25
16208
Marin
Rifle Camp, Mt. Tamalpais
Comment
UCD66141
Festuca occidentalis
John Thomas Howell
1958-8-2
34187
Fresno
Copper Creek Canyon trail.
2286
Comment
CAS-BOT-BC278989
Festuca rubra
John Thomas Howell
1944-6-4
19561
Marin
Near Mt. Vision west of Inverness
Comment
CAS-BOT-BC278523
Festuca saximontana
John Thomas Howell
1958-8-14
34461
Madera
Summit of ridge se. of Long Mt.
3291
Comment
CAS-BOT-BC278588
Festuca saximontana
John Thomas Howell
1940-8-8
16056
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC282555
Festuca viridula
John Thomas Howell
1943-7-18
18547
Nevada
Castle Peak
Comment
RSA1066
Forestiera pubescens
J. T. Howell
1927-8-17
645
Monterey
Bradley
165
Comment
CAS-BOT-BC437064
Fragaria vesca subsp. bracteata
J. T. Howell
1939-6-8
2666
Trinity
South Fork Mt. Blake Lookout Road, 5.4 miles from junction Alton-Redbluff Hwy.
Comment
CAS-BOT-BC52719
Frangula californica subsp. californica
John Thomas Howell
1945-6-21
21190
Lake
Bartlett Mountain, Ruppert Ridge to Bartlett Flat
Comment
CAS-BOT-BC62901
Frangula californica subsp. tomentella
John Thomas Howell
1959-9-20
34701
Butte
Feather River Highway, 5.5 mi. below West Branch Bridge.
Comment
CAS-BOT-BC55747
Frangula rubra subsp. rubra
John Thomas Howell
1925-6-17
1169
El Dorado
Armstrong's, Emerald Bay, Lake Tahoe
1889
Comment
CAS-BOT-BC55733
Frangula rubra subsp. rubra
John Thomas Howell; R. C. Barneby
1954-5-11
29391
Madera
Peckinpah Creek
914
Comment
SDSU7105
Frasera albicaulis var. nitida
D. F. Howe
1962-8-4
3389
Siskiyou
Baldy Mountain.
1737
Comment
CAS-BOT-BC205922
Fremontodendron californicum
John Thomas Howell
1927-7-9
2699
San Bernardino
Cushenberry [Cushenbury] Grade, desert side of San Bernardino Mts.
1219
Comment
RSA1046
Fremontodendron californicum
J. T. Howell
1927-7-9
322
San Bernardino
Cushenberry Grade.
1220
Comment
SD114518
Fremontodendron decumbens
Darley F. Howe
1978-6-25
5061
El Dorado
Pine Hill
Comment
CAS-BOT-BC504567
Fritillaria atropurpurea
John Thomas Howell
1943-7-20
18601
Nevada
Castle Peak
Comment
CAS-BOT-BC130307
Fritillaria brandegeei
John Thomas Howell; Gordon H. True
1969-9-29
46319
Tulare
True Meadow, Kern Plateau
2194
Comment
POM203309
Galium californicum subsp. flaccidum
J. T. Howell
1931-5-25
6544
Santa Barbara
Mission Ridge, Santa Barbara.
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
CAS-BOT-BC217571
Galium hypotrichium subsp. subalpinum
John Thomas Howell
1947-8-6
23835
Inyo
Above Summit Lake, Big Pine Lakes
3413
Comment
UC710625
Galium murale
John Thomas Howell
1944-4-30
19421
Alameda
e Mills College; Oakland Hills, Portugese Flat
304
Comment
SD42800
Galium parishii
Darley F. Howe
1947-8-26
San Bernardino
San Gorgonio Trail, among rocks
Comment
CAS-BOT-BC303499
Gamochaeta ustulata
John Thomas Howell
1947-6-26
s.n.
Sonoma
Cunningham Marsh
Comment
CAS-BOT-BC188515
Garrya elliptica
John Thomas Howell
1930-9-14
5472
Mendocino
4.5 miles n. Ft. Bragg
Comment
LA40297
Garrya elliptica
John Thomas Howell;
1930-6-15
5304
Alameda
Grizzly Peak, Berkeley Hills
Comment
CAS-BOT-BC169934
Garrya fremontii
John Thomas Howell
1975-6-15
51081
Butte
In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on Skyway to Chico
396
Comment
SEINET5765227
Garrya fremontii
J. T. Howell
1975-6-15
51081
Butte
2 miles from Paradise on 'Skyway' to Chico.
396
Comment
A401945
Garrya veatchii
J. T. Howell
1927-6-11
2488
Unknown
old road to Hesperia near Cajon Pass, Mojave Desert
1066
Comment
SD113460
Garrya veatchii
Darley F. Howe
1955-3-20
2440
San Diego
East base of Mt. Woodson
Comment
POM355381
Gayophytum diffusum subsp. parviflorum
D. F. Howe
1970-8-27
s.n.
Mono
14.7 miles west of Sonora Junction on Sonora Pass Road
2744
Comment
RSA39995
Gayophytum diffusum subsp. parviflorum
J. T. Howell
1944-8-15
20503
Tuolumne
Between Young Lake and Tuolumne Meadows
2744
Comment
SD130492
Gayophytum diffusum subsp. parviflorum
John Thomas Howell
1974-9-20
50893
Plumas
7.0 miles from Quincy on road to Blairsden.
1096
Comment
SD56708
Geranium core-core
Darley F. Howe
1963-8-1
3654
Sonoma
2.2 miles north of Jenner on #1
Comment
CAS-BOT-BC459613
Geum macrophyllum
John Thomas Howell
1943-7-17
18457
Nevada
West side of Donner pass near Norden. Signal Hill
2133
Comment
SD114206
Gilia angelensis
Darley F Howe
1935-2-24
100
San Diego
Otay mesa near San Ysidro.
Comment
SD43633
Gilia capitata
Darley F. Howe
1948-5-23
1849
Placer
American River
305
Comment
CAS-BOT-BC225291
Gilia capitata subsp. chamissonis
John Thomas Howell
1945-6-12
s.n.
Marin
Pt. Reyes dunes
Comment
SD64390
Gilia capitata subsp. chamissonis
Darley F. Howe
1966-6-1
4249
Marin
Sand hills near ocean, Pt. Reyes Peninsula
Comment
CAS-BOT-BC226208
Gilia interior
John Thomas Howell
1976-5-18
51738
Kern
2.3 mi. from Alta Sierra. Along old road from Alta Sierra to Wofford Heights, Greenhorn Mountains
Comment
UC907998
Gilia latifolia
John Thomas Howell
1928-3-24
3508
San Diego
near Palm Wash; w Colorado Desert, near Palm Wash
Comment
SD128702
Gilia sinuata
Darley F. Howe
1980-5-26
San Bernardino
1 mile north of Highway 15 on Cima Road
1220
Comment
CAS-BOT-BC218437
Glehnia littoralis subsp. leiocarpa
John Thomas Howell
1947-6-18
23279
Marin
Dillon's Beach.
Comment
CDA28228
Glyceria elata
J. T. Howell, G. H. True
1969-10-1
46441
Tulare
Kern Plateau; Near Poison Meadow.
Comment
UCD66839
Glyceria elata
John Thomas Howell
1943-7-17
18451
Nevada
West side of Donner Pass near Norden.
2133
Comment
CAS-BOT-BC282800
Glyceria leptostachya
John Thomas Howell
1946-6-16
22077
Marin
Olema Marshes
Comment
CAS-BOT-BC303819
Gnaphalium
John Thomas Howell
1976-7-14
51819
Plumas
Feather River Canyon Highway at Injun Jim Campground
609
Comment
CAS-BOT-BC302700
Gnaphalium palustre
John Thomas Howell
1936-8-25
12786
Trinity
Near Trinity Center
Comment
CAS-BOT-BC307373
Gnaphalium palustre
John Thomas Howell
1943-7-19
18583
Placer
Summit Valley
Comment
CAS-BOT-BC307377
Gnaphalium palustre
John Thomas Howell
1960-7-18
35540
Plumas
Drakesbad, Lassen Volcanic National Park
1828
Comment
CAS-BOT-BC307468
Gnaphalium palustre
John Thomas Howell
1960-7-21
35836
Shasta
NW of Willow Lake, Lassen Volcanic National Park
1676
Comment
GH37684
Grindelia arenicola var. pachyphylla
J. T. Howell
1931-9-27
8106
Unknown
Open coastal plain 6 miles south of Point Arena
Comment
GH417567
Grindelia camporum
J. T. Howell
1930-6-29
5329
Unknown
Merced
Comment
SDSU2707
Grindelia camporum
D. F. Howe
1963-6-30
3646
Santa Barbara
Above Jalama State Park.
Comment
GH37685
Grindelia camporum f. foliacea
J. T. Howell
1930-5-30
5201
Unknown
1 mile from Vacaville on road to Elmira
Comment
CAS-BOT-BC304475
Grindelia hirsutula
John Thomas Howell
1925-4-5
896
Marin
Pipeline Trail
Comment
CAS-BOT-BC304852
Grindelia hirsutula
J. T. Howell
1925-11-26
1563
Solano
Between Benecia and Cordelia
Comment
CAS-BOT-BC304903
Grindelia hirsutula
John Thomas Howell
1929-8-4
4361 A
Napa
Flood bed of Pope Creek, one mile below Samuels Springs, Napa Range
Comment
CAS-BOT-BC304907
Grindelia hirsutula
John Thomas Howell
1933-8-27
11645
Napa
East of Chiles Valley on road to Winters, Napa Range
Comment
UC1176886
Grindelia hirsutula
John Thomas Howell
1945-7-29
21362
Marin
ocean bluff at mouth Rio Honda (n of Bolinas)
Comment
CAS-BOT-BC304964
Grindelia hirsutula
John Thomas Howell
1931-5-29
6573
Ventura
Conejo Valley
Comment
GH417717
Grindelia stricta var. angustifolia
J. T. Howell
1933-7-30
11472
Unknown
Head of Tomales Bay
Comment
SEINET196485
Grindelia stricta var. angustifolia
J. T. Howell
1949-10-9
26300
Marin
Salt marsh bordering San Francisco Bay at N end of Tiburon Pensinula
Comment
UC1177250
Guillenia lasiophylla
John Thomas Howell
1940-5-12
15429
Marin
between Little Carson and Carson Ridge
Comment
CAS-BOT-BC304585
Gutierrezia californica
John Thomas Howell
1967-9-30
44017
Marin
West side of Angel Island
Comment
CAS-BOT-BC231144
Hackelia amethystina
John Thomas Howell
1944-7-13
19736
Glenn
Plaskett Meadows
Comment
CAS-BOT-BC306273
Hedypnois cretica
John Thomas Howell
1942-5-3
16955
Marin
South side of Mt. Tamalpais above Summit Ave. ridge
Comment
CAS-BOT-BC306277
Hedypnois cretica
John Thomas Howell
1925-5-9
1023
Merced
3 miles sw. of Merced
Comment
CAS-BOT-BC306760
Helenium bigelovii
John Thomas Howell
1938-7-17
13984
Solano
Suisun Marshes at Suisun
Comment
SD37202
Helenium bigelovii
Darley F. Howe
1941-8-8
1283
Inyo
Lone Pine Creek
Comment
UC897333
Helenium bigelovii
J. T. Howell
1938-7-17
13984
Solano
Suisun Marshes Suisun, Suisun Marshes
Comment
CAS-BOT-BC306830
Helenium bigelovii
John Thomas Howell
1950-7-24
27329
Tulare
East of Hessian Meadows
2895
Comment
RSA872
Helenium puberulum
J. T. Howell
1927-7-15
402
Orange
Santa Ana River, Rancho Santa Ana [Botanic Garden]
152
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
RSA215917
Helianthus annuus subsp. lenticularis
J. T. Howell
1957-9-22
32969
San Francisco
In waste ground, north base of Telegraph Hill, San Francscio.
Comment
CAS-BOT-BC305542
Helianthus bolanderi
John Thomas Howell
1951-8-20
28225
Plumas
Indian Valley
1097
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
RSA0012964
Helianthus californicus
J. T. Howell
1933-8-27
11624
Napa
Sage Canyon, Napa Range.
Comment
SD60974
Helianthus niveus subsp. tephrodes
Darley F. Howe
1964-4-11
3758
Imperial
22.3 miles east of Brawley on road to Glamis.
120
Comment
CAS-BOT-BC312142
Hemizonella minima
John Thomas Howell
1962-5-22
37353
Tulare
Johnsondale, Sierra Nevada
1423
Comment
JEPS29570
Hemizonella minima
John Thomas Howell
1961-6-20
36543
Shasta
Lassen Hwy 1 mi nw Lost Creek Bridge; Lassen Volcanic National Park
1798
Comment
SDSU4585
Hemizonia congesta subsp. clevelandii
D. F. Howe
1977-7-2
4984
Siskiyou
7 miles west of Fort Jones on Scott River road.
671
Comment
UC1177316
Hemizonia congesta subsp. congesta
John Thomas Howell
1946-6-13
22046
Marin
e Aurora School (at the Sonoma Co. line)
Comment
CAS-BOT-BC309714
Hemizonia congesta subsp. lutescens
John Thomas Howell
1930-7-27
5409
Sonoma
8 miles south of Ft. Ross
Comment
UCR47732
Hemizonia minthornii
J. T. Howell
1977-3-7
s.n.
Los Angeles
Santa Susana Mtns., Summit of Santa Susana Pass
488
Comment
GH414548
Hemizonia pungens
J. T. Howell
1962-5-23
37389
Unknown
Isabella
762
Comment
RSA22001
Herniaria hirsuta subsp. cinerea
J. T. Howell
1938-4-3
13727
Alameda
5 miles E of Livermore.
Comment
CAS-BOT-BC388491
Herniaria hirsuta var. cinerea
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52810
Calaveras
Camp Nine Road northeast of Vallecito
609
Comment
CAS-BOT-BC310138
Hesperevax acaulis
John Thomas Howell
1930-5-15
5159
Kern
Hills near Glenville, Greenhorn Range
975
Comment
SD61063
Hesperevax acaulis var. ambusticola
Darley F. Howe
1964-5-21
3796
Fresno
2.4 miles from entrance to Sierra National Forest.
1064
Comment
UCD114967
Hesperis matronalis
John Thomas Howell; Gordon H. True
1967-6-11
42568 A
Plumas
Meadow at Quincy.
1036
Comment
CAS-BOT-BC403793
Hesperocnide tenella
John Thomas Howell
1965-4-26
41178
Madera
3 miles south of Oakhurst
914
Comment
RSA54067
Hesperocnide tenella
J. T. Howell
1949-7-4
25355
Santa Cruz
Near Felton.
Comment
RSA91376
Hesperolinon adenophyllum
J. T. Howell
1937-7-19
s.n.
Lake
Elk Mountain
Comment
CAS-BOT-BC167411
Hesperolinon bicarpellatum
John Thomas Howell
1945-6-22
21229
Lake
3.8 miles north of Middletown
Comment
CAS-BOT-BC167433
Hesperolinon breweri
John Thomas Howell
1942-7-19
17047
Contra Costa
Serpentine ne. of Deer Flat, Mt. Diablo
Comment
CAS-BOT-BC176069
Hesperolinon congestum
John Thomas Howell
1943-5-15
18094
Marin
Tiburon Peninsula
Comment
SEINET10460708
Heterocodon rariflorum
Howell
1951-6-28
Howell 27675
Plumas
JAMISON CREEK 5200
Comment
CAS-BOT-BC308929
Heterotheca
John Thomas Howell
1958-5-21
33041
Kern
2 miles southwest of Miracle Hot Springs
731
Comment
UCR88744
Heterotheca oregona
J. T. Howell
1959-9-20
34620
Butte
eastern outskirts of Oroville on level of Feather River
61
Comment
CAS-BOT-BC311017
Heterotheca oregona
John Thomas Howell
1959-9-26
35077 A
Plumas
Feather River Canyon (north fork) 1 mile above 2000 ft. marker
Comment
CAS-BOT-BC311031
Heterotheca oregona var. compacta
John Thomas Howell
1930-10-19
5600
Napa
Bed of Conn Creek near entrance of Sage Canyon, Napa Valley
Comment
CAS-BOT-BC310819
Heterotheca sessiliflora subsp. echioides
John Thomas Howell
1933-8-19
11614
Santa Cruz
Mt. Hermon, Santa Cruz Mts.
Comment
CAS-BOT-BC318953
Heterotheca sessiliflora var. echioides
John Thomas Howell
1933-8-18
11559
Monterey
2 miles west of Greenfield, Santa Lucia Mts.
Comment
CAS-BOT-BC424451
Heuchera rubescens
John Thomas Howell
1947-8-8
23908
Inyo
Second to Third Lake, Big Pine Lakes
3048
Comment
CAS-BOT-BC312312
Hieracium
John Thomas Howell
1958-7-30
34131
Fresno
Simpson Meadow, Middle Fork of the Kings River, Sierra Nevada
1828
Comment
SD26307
Hieracium albiflorum
Darley F. Howe
1939-7-24
964
Mariposa
Yosemite National Park; Oak Flat Road.
Comment
SD61018
Hieracium cynoglossoides
Darley F. Howe
1964-7-31
Modoc
8.5 miles from entrance to Modoc National Forest on road from Likely.
1555
Comment
CAS-BOT-BC318641
Hieracium horridum
John Thomas Howell
1962-7-11
38582
Kern
Summit ridge, Black Mountain, Greenhorn Mountains, Sierra Nevada
2255
Comment
CAS-BOT-BC318670
Hieracium horridum
John Thomas Howell
1948-7-22
24894
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC318821
Hieracium horridum
John Thomas Howell
1944-8-16
20610
Tuolumne
Mono Pass Trail
Comment
SD53140
Hieracium horridum
Darley F. Howe
1962-8-17
3450
Fresno
Tamarack Creek, 13 miles east of shaver Lake on highway 168.
2165
Comment
CAS-BOT-BC55351
Hirschfeldia incana
John Thomas Howell
1970-11-8
47516
Kern
Sierra Nevada. Lake Isabella, 6 miles from South Fork Kern River bridge on road from Weldon to Kernville.
792
Comment
CAS-BOT-BC55405
Hirschfeldia incana
John Thomas Howell; Gordon H. True
1968-6-10
44541
Plumas
Sierra Nevada. Quincy.
1036
Comment
CAS-BOT-BC207569
Hoffmannseggia microphylla
John Thomas Howell
1928-3-25
3543
Riverside
Painted Canyon [Canon]
Comment
CAS-BOT-BC280778
Holcus lanatus
John Thomas Howell
1960-8-23
36428
Shasta
Lassen Volcanic National Park. Reflection Lake
1792
Comment
CAS-BOT-BC320142
Holocarpha heermannii
John Thomas Howell
1962-7-12
38652
Kern
3 mi. north of Kernville
822
Comment
CAS-BOT-BC325831
Holocarpha heermannii
John Thomas Howell
1930-9-28
5499
Contra Costa
6.3 miles from Byron on teh Marsh Creek Road
Comment
CAS-BOT-BC320312
Holocarpha virgata
John Thomas Howell
1932-10-16
10832
Alameda
8 miles from Livermore on Tesla Road
Comment
SD112645
Holocarpha virgata subsp. elongata
Darley F. Howe
1938-8-7
710
San Diego
Highway near Poway
Comment
CAS-BOT-BC459651
Holodiscus
John Thomas Howell
1962-9-24
38849
Kern
Summit of ridge of Sunday Peak, Greenhorn Mountains
2529
Comment
SD51343
Holodiscus discolor
Darley Howe
1961-7-24
Santa Cruz
2 miles north of Skyline on #9
609
Comment
CAS-BOT-BC149933
Holodiscus discolor var. discolor
John Thomas Howell; Gordon H. True
1966-7-12
41816
Kern
Just east of Fay Creek Canyon, Kern Plateau
2194
Comment
CAS-BOT-BC149971
Holodiscus discolor var. discolor
John Thomas Howell
1938-5-22
13797
Marin
San Anselmo Canyon
Comment
CAS-BOT-BC152409
Holodiscus discolor var. discolor
John Thomas Howell
1945-9-26
21508
Tuolumne
Lembert Dome, Tuolumne Meadows
Comment
SD114325
Holodiscus discolor var. microphyllus
Darley F. Howe
1941-8-5
1147
Inyo
Lone Pine Creek, Sierra Nevadas
Comment
CAS-BOT-BC152754
Holodiscus microphyllus var. microphyllus
John Thomas Howell
1950-7-17
26991
Tulare
Bakeoven Meadows, South Fork of Kern River - Sierra Nevada
2468
Comment
CAS-BOT-BC284642
Hordeum brachyantherum subsp. brachyantherum
John Thomas Howell
1943-7-18
18510
Nevada
Willow Valley just west of Castle Peak
Comment
CAS-BOT-BC289506
Hordeum brachyantherum subsp. californicum
John Thomas Howell
1963-6-22
39515
Monterey
Near summit of Mustang Grade east of San Lorenzo Creek
Comment
RSA121024
Hordeum brachyantherum subsp. californicum
J. T. Howell
1957-5-19
32365
Stanislaus
Del Puerto Canyon
Comment
CAS-BOT-BC284714
Hordeum jubatum
John Thomas Howell; Gordon H. True
1973-8-1
50198
Lassen
Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville
2194
Comment
CAS-BOT-BC285107
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1967-6-23
42691
Plumas
Butterfly Valley
1066
Comment
CAS-BOT-BC285124
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1956-5-19
31401
San Francisco
Near Third & Army streets, San Francisco
Comment
GH365226
Hordeum marinum subsp. gussoneanum
J. T. Howell
1944-5-28
Unknown
Almonte
Comment
CAS-BOT-BC285079
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1957-5-19
32350
Stanislaus
Del Puerto Canyon
Comment
CAS-BOT-BC289585
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1955-5-20
30222
Monterey
1 1/2 miles east of summit of Jamesburg Road, Santa Lucia Mts.
Comment
RSA118034
Hordeum marinum subsp. gussoneanum
J. T. Howell
1955-5-20
30222
Monterey
1.5 miles east of summit of Jamesburg road, Santa Lucia Mts.
Comment
CAS-BOT-BC284774
Hordeum murinum subsp. glaucum
John Thomas Howell
1954-5-15
s.n.
Yolo
Woodland
Comment
CAS-BOT-BC284862
Hordeum murinum subsp. glaucum
John Thomas Howell
1958-5-22
33124
Tulare
Kern River Canyon 6 miles south of Roads End P.O.
944
Comment
CAS-BOT-BC289385
Hordeum murinum subsp. glaucum
John Thomas Howell
1956-5-19
21416 A
San Francisco
Third and Army Streets, San Francisco
Comment
RSA223637
Hordeum murinum subsp. glaucum
J. T. Howell
1956-7-1
31664
San Francisco
Hunters Point
Comment
UCD86235
Hordeum murinum subsp. glaucum
John Thomas Howell; Gordon H. True
1967-7-4
43002
Tulare
Kern Plateau. 3.4 miles S of Troy Meadow.
2286
Comment
CAS-BOT-BC282031
Hordeum murinum subsp. leporinum
John Thomas Howell
1932-3-13
8218
Ventura
San Nicolas Island
Comment
CAS-BOT-BC273527
Hordeum vulgare
John Thomas Howell
1963-5-7
39201
Monterey
On San Lorenzo Creek, 6 miles northeast of King City
182
Comment
CAS-BOT-BC273523
Hordeum vulgare
John Thomas Howell
1949-6-7
25342
Marin
Aurora School, nw. Marin Co.
Comment
UC473469
Horkelia californica
John Thomas Howell
1930-6-8
5279
Sonoma
8 mi n Bodega Bay
Comment
CAS-BOT-BC536125
Horkelia californica
John Thomas Howell
1956-6-17
31565
San Francisco
Summit ridge of Bayview Hills, San Francisco
Comment
SD64314
Horkelia cuneata var. cuneata
Darley F. Howe
1966-5-27
Santa Cruz
Mt. Herman
152
Comment
CAS-BOT-BC143432
Horkelia fusca var. parviflora
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54170
Plumas
Long Valley at road to Maxwell Mine
1633
Comment
CAS-BOT-BC146325
Horkelia tularensis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-16
53871
Tulare
Bald Mountain, Kern Plateau
2834
Comment
CAS-BOT-BC88562
Hornungia procumbens
John Thomas Howell
1962-7-12
38642
Kern
Sierra Nevada. Kernville.
Comment
CAS-BOT-BC142667
Howellanthus dalesianus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-5-20
53545
Trinity
Scott Mt. summit on road from Carrville to Callahan
1645
Comment
CAS-BOT-BC312554
Hulsea heterochroma
John Thomas Howell; Gordon H. True
1967-9-18
43810
Tulare
About 6 miles from Chimney Meadow on road to Long Valley, Kern Plateau
2346
Comment
CAS-BOT-BC315942
Hulsea vestita subsp. vestita
John Thomas Howell; Gordon H. True
1970-6-23
46666
Mono
Northeast end of Big Meadow, Kern Plateau, Sierra Nevada
2377
Comment
SDSU1696
Hulsea vestita var. pygmaea
D. F. Howe
1961-4-26
3048
Inyo
North of Westgard Pass, White Mts.
2347
Comment
SD70025
Hydrophyllum canadense
Darley Howe
1968-5-28
4536
Mendocino
Divide
1768
Comment
SD147550
Hydrophyllum occidentale
John Thomas Howell
1962-7-10
38942
Kern
Greenhorn Mts. Shirley Meadows
2012
Comment
RSA888
Hymenopappus filifolius var. lugens
J. T. Howell
1927-7-10
362
San Bernardino
Big Bear, San Bernardino Mountains.
1828
Comment
CAS-BOT-BC400860
Hypericum anagalloides
John Thomas Howell
1950-7-15
26904
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC400958
Hypericum anagalloides
John Thomas Howell
1946-8-17
22876
Sonoma
Cunningham Marsh
Comment
CAS-BOT-BC400988
Hypericum anagalloides
John Thomas Howell
1939-8-5
15083
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
JEPS63220
Hyptis emoryi
John Thomas Howell
1928-1-29
3295
Riverside
Painted Canyon; Colorado Desert, Painted Canyon
Comment
SD81274
Iris innominata
Darley F. Howe
1969-5-31
Del Norte
Rowdy Creek Road.
609
Comment
SD112455
Iris purdyi
darley F. Howe
1972-5-6
4832
Humboldt
1.5 miles north of Phillipsville.
Comment
SD112606
Isocoma menziesii var. menziesii
Darley F. Howe
1959-10-4
2818
San Diego
1 mile northeast of Highway 101 in San Ysidro, on Otay Mesa.
Comment
CAS-BOT-BC69876
Isoetes nuttallii
John Thomas Howell
1940-3-17
15390
Marin
Lagunitas Meadows.
Comment
CAS-BOT-BC112528
Isolepis cernua
John Thomas Howell
1956-6-5
31486
San Francisco
North slope of Bayview Hills, San Francisco
Comment
SD112247
Isolepis cernua
Darley F. Howe
1941-9-21
1322
San Diego
Stream bed west of Campo.
Comment
CAS-BOT-BC137435
Ivesia baileyi var. baileyi
John Thomas Howell
1977-8-11
52685
Plumas
Canyon of Little Last Chance Creek between Chilcoot and Frenchmans Reservoir
1676
Comment
UC618529
Ivesia kingii var. kingii
John Thomas Howell
1938-8-8
14380
Mono
Long Valley
Comment
CAS-BOT-BC142781
Ivesia lycopodioides subsp. lycopodioides
John Thomas Howell
1944-8-15
20550
Tuolumne
Mt. Conness
3505
Comment
CAS-BOT-BC142802
Ivesia lycopodioides subsp. megalopetala
John Thomas Howell
1946-7-14
22238
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC142818
Ivesia muirii
John Thomas Howell
1946-7-20
22575
Fresno
Unlaciated ridge sout of Mono Rock
3596
Comment
UC710585
Ivesia muirii
John Thomas Howell
1944-8-15
20523
Tuolumne
Mt. Conness
3352
Comment
UC574877
Ivesia pickeringii
John Thomas Howell
1936-8-26
12797
Trinity
8 mi n Carrville
Comment
CAS-BOT-BC47025
Jamesia americana var. rosea
John Thomas Howell
1946-7-26
22775
Fresno
Mono Mesa above Gold Lake.
Comment
CAS-BOT-BC340166
Jaumea carnosa
John Thomas Howell
1927-6-30
2626
Los Angeles
1 mile east of Long Beach
15
Comment
CAS-BOT-BC340251
Jensia rammii
John Thomas Howell; R. C. Barneby
1954-5-13
29518
Calaveras
3 miles northeast of Mountain Ranch
762
Comment
POM304503
Juncus bryoides
J. T. Howell
1941-8-8
16836
Madera
Garnet Creek to San Joaquin Mountain.
Comment
CAS-BOT-BC123260
Juncus howellii
John Thomas Howell
1936-8-24
12750
Trinity
Summit of Scott Mts., N of Carrville
Comment
UCD141561
Juncus kelloggii
John Thomas Howell
1967-6-8
42549
Marin
northern National Seashore beach area, Point Reyes Peninsula.
Comment
RSA44161
Juncus mexicanus
J. T. Howell
1947-8-5
23806
Inyo
Fifth Lake, Big Pine Lakes.
3354
Comment
UC793648
Juncus mexicanus
D. F. Howe
1947-6-2
16
San Bernardino
s of Big Bear Lake
2225
Comment
POM261499
Juncus oxymeris
J. T. Howell
1940-6-30
15594
Lake
Soda Bay.
Comment
UCD142363
Juncus tenuis
John Thomas Howell
1960-8-20
36224
Tehama
Morgan, Lassen Volcanic National Park.
1463
Comment
UC1543890
Juncus tiehmii
John Thomas Howell and Gordon H. True
1967-7-5
43131
Tulare
6 mi n South Fork Kern River (bridge on road to Troy Meadows); Sierra Nevada, Kern Plateau
2286
Comment
CAS-BOT-BC81257
Juniperus occidentalis
John Thomas Howell
1950-7-26
27340
Tulare
Between Monache and Summit Meadows
2590
Comment
CAS-BOT-BC243678
Justicia californica
John Thomas Howell
1927-11-25
3220
San Diego
N. Borrego Valley W. Colorado Desert
243
Comment
CAS-BOT-BC235595
Keckiella breviflora
John Thomas Howell; Gordon H. True
1967-7-3
42781
Tulare
Near north end of Lamont Meadow on road to Chimney Meadow, Kern Plateau
1859
Comment
CAS-BOT-BC236767
Keckiella breviflora
John Thomas Howell
1945-6-21
21173
Lake
Sawmill Flat to Ruppert Ridge, Bartlett Mountain
Comment
SD113660
Keckiella cordifolia
Darley F. Howe
1979-6-18
5095
Ventura
Canyon 15.7 miles south of Santa Barbara
Comment
CAS-BOT-BC237849
Keckiella lemmonii
John Thomas Howell
1929-8-4
4356
Napa
One mile below Samuels Springs, Pope Creek Canon [Canyon], Napa Range
Comment
CAS-BOT-BC246118
Keckiella ternata var. ternata
John Thomas Howell
1947-7-18
23378
Los Angeles
Tujunga Canyon, San Gabriel Mountains
914
Comment
CAS-BOT-BC180809
Kochia scoparia
John Thomas Howell
1956-8-19
31774
San Francisco
Waterfront St. near Mission Rock Terminal, San Francisco
Comment
CAS-BOT-BC273797
Koeleria pyramidata
John Thomas Howell; Gordon H. True
1970-7-28
46956
Tulare
West side of Big Meadow just south of Pipe Spring. Kern Plateau
2377
Comment
SBBG92287
Krameria erecta
D. F. Howe
1980-5-28
Inyo
5 mi W of California/Nevada state line on Hwy 178
835
Comment
CAS-BOT-BC340670
Lactuca serriola
John Thomas Howell
1967-11-3
44044
Tulare
About 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC340623
Lactuca serriola
John Thomas Howell
1957-6-17
32673
San Francisco
San Francisco. Lone Mt.
Comment
CAS-BOT-BC341324
Lagophylla glandulosa
John Thomas Howell
1938-5-29
13860
Madera
Raymond
Comment
CAS-BOT-BC341444
Lagophylla ramosissima
John Thomas Howell; R. C. Barneby
1954-5-11
29440
Mariposa
6 miles northwest of Raymond
Comment
CAS-BOT-BC341542
Lagophylla ramosissima
John Thomas Howell
1963-5-5
39034
Monterey
Mustang Grade, west of Priest Valley
670
Comment
CAS-BOT-BC49451
Lagophylla ramosissima subsp. ramosissima
John Thomas Howell
1934-6-11
11939
Modoc
Parker Creek, Warner Mountains
1584
Comment
SD50971
Langloisia setosissima subsp. punctata
Darley F. Howe
1958-4-12
2605
San Bernardino
East base of Bristol Mountains; San Bernardino Mts.
Comment
SDSU3124
Langloisia setosissima subsp. punctata
D. F. Howe
1978-6-20
5033
Inyo
Inyo Mtns.
1981
Comment
CAS-BOT-BC337871
Lapsana communis
John Thomas Howell
1941-6-29
16325
Marin
Mill Valley
Comment
CAS-BOT-BC338941
Lasthenia californica
John Thomas Howell
1958-4-27
33018
San Benito
5 miles n. of Pinnacles
Comment
CAS-BOT-BC334572
Lasthenia californica
John Thomas Howell
1937-5-23
13004
San Francisco
Presidio, San Fransicso
Comment
CAS-BOT-BC337947
Lasthenia californica
John Thomas Howell
1931-4-4
6182
Solano
Blue Rock Springs near Vallejo
Comment
RSA93011
Lasthenia californica
J. T. Howell
1933-5-24
11340
San Francisco
Point Lobos, San Francisco.
Comment
CAS-BOT-BC324402
Lasthenia californica subsp. macrantha
John Thomas Howell
1930-4-20
4739
Marin
Pt. Reyes
Comment
CAS-BOT-BC352913
Lasthenia coronaria
John Thomas Howell
1930-5-10
4800
Riverside
Top of St. John's Grade
Comment
UC1106186
Lasthenia glaberrima
John Thomas Howell
1945-5-9
20827
Marin
between Hamilton Field and Ignacio
Comment
RSA1440
Lasthenia gracilis
J. T. Howell
1929-2-14
1229
Riverside
3 miles S of Glen Ivy.
Comment
UC421687
Lasthenia gracilis
John Thomas Howell
1929-4-11
4140
Merced
on Los Banos Road 7 1/2 mi sw, on elevated hog wallows Merced; San Joaquin Valley
45
Comment
SD81265
Lasthenia macrantha
Darley F. Howe
1969-5-27
Marin
Bluff above Drake's Bay.
Comment
CAS-BOT-BC367532
Lasthenia microglossa
John Thomas Howell
1930-5-15
5136
Kern
Hills near Glenville, Greenhorn Range
975
Comment
CAS-BOT-BC370869
Lasthenia minor
John Thomas Howell
1935-3-25
2034
San Luis Obispo
West side of Cottonwood Pass
Comment
RSA44356
Lathyrus torreyi
J. T. Howell
1940-5-12
15424
Marin
Between Little Carson and Carson Ridge.
Comment
CDA4999
Lavatera cretica
J. T. Howell
1976-6-2
51805
Marin
Corte Madera.
0
Comment
CAS-BOT-BC323252
Layia chrysanthemoides
John Thomas Howell
1931-4-2
6048
Sonoma
Boyes Springs
Comment
POM361710
Layia platyglossa subsp. campestris
J. T. Howell
1931-3-29
6009
San Benito
4 miles from San Benito on road to the Pinnacles
Comment
CAS-BOT-BC537132
Lemna minor
John Thomas Howell
1956-12-3
31973
Mariposa
5.5 miles from Cathay on road to Planada, Sierra Nevada
Comment
CAS-BOT-BC534658
Lemna minuta
John Thomas Howell
1956-9-2
31828
San Francisco
East end of Lake Merced, San Francisco
Comment
CAS-BOT-BC534878
Lemna valdiviana
John Thomas Howell
1939-7-16
s.n.
Marin
Azalea Flat, Matt Davis Trail, Mt. Tamalpais
Comment
CAS-BOT-BC221547
Lepechinia calycina
John Thomas Howell
1931-4-15
6404
Santa Barbara
Pelican Bay, Santa Cruz Island
Comment
RSA1076
Lepechinia cardiophylla
J. T. Howell
1927-6-26
225
Orange
Claymine Canyon, near Sierra Peak
610
Comment
CAS-BOT-BC88703
Lepidium acutidens
John Thomas Howell
1933-3-29
10894
Contra Costa
Nortonville.
Comment
CAS-BOT-BC88890
Lepidium chalepense
John Thomas Howell; Gordon H. True
1968-5-12
44216
Tulare
Sierra Nevada. Kern Plateau. Brush Creek Canyon.
1402
Comment
SBBG92200
Lepidium fremontii
D. F. Howe
1980-5-25
San Bernardino
1 mi N of Interstate 15 on Cima Rd
1220
Comment
CAS-BOT-BC89530
Lepidium lasiocarpum
John Thomas Howell
1947-6-18
23277
Marin
Dillons Beach.
Comment
SD113487
Lepidium lasiocarpum
Darley F. Howe
1941-6-15
1108
San Diego
Tijuana Valley, 2 miles from ocean
Comment
RSA54058
Lepidium latifolium
J. T. Howell
1948-8-10
25285 A
Santa Clara
4 miles N of Madrone.
Comment
RSA217989
Lepidium latipes
J. T. Howell
1963-5-6
39135
Monterey
3 miles N of Jolon.
335
Comment
CAS-BOT-BC12743
Lepidium oxycarpum
John Thomas Howell
1933-4-1
10919
Marin
4.5 miles north of San Rafael.
Comment
CAS-BOT-BC60050
Lepidium virginicum var. menziesii
John Thomas Howell
1923-6-7
31
Mariposa
Wawona.
1219
Comment
CAS-BOT-BC329357
Lepidospartum squamatum
John Thomas Howell
1927-7-28
2864
Orange
North side of Santa Ana Canon
152
Comment
SD112499
Lepidospartum squamatum
Darley F. Howe
1938-9-26
747
Los Angeles
Near Claremont.
Comment
CAS-BOT-BC273966
Leptochloa fusca subsp. fascicularis
John Thomas Howell
1962-9-25
38893
Kern
Kern River bed 3 miles north of Kernville
822
Comment
SEINET10588911
Leptochloa fusca subsp. fascicularis
John Thomas Howell
1963-8-20
Howell 40133
Kern
South Fork Valley about 2 miles northeast of Weldon, el.
808
Comment
SEINET10861678
Leptochloa fusca subsp. fascicularis
John Thomas Howell
1962-9-21
Howell 38673
Kern
Kern River Canyon, el. ca.
305
Comment
CAS-BOT-BC272392
Leptochloa fusca subsp. uninervia
John Thomas Howell; R. C. Barneby
1954-5-9
29233
Tulare
Plains 1 mile west of Woodlake
134
Comment
SD70024
Leptosiphon bolanderi
Darley Howe
1968-5-28
4539
Tehama
1.3 miles north of Log Springs Guard Station.
1372
Comment
CAS-BOT-BC225616
Leptosiphon oblanceolatus
John Thomas Howell
1946-7-22
22664
Fresno
Pioneer Basin
3291
Comment
JEPS20591
Lessingia arachnoidea
John Thomas Howell
1926-10-9
2220 A
San Mateo
near Crystal Springs Lake
91
Comment
JEPS20555
Lessingia germanorum
John Thomas Howell
1926-11-7
2233
San Francisco
near Lake Merced
Comment
CAS-BOT-BC339364
Lessingia glandulifera var. glandulifera
John Thomas Howell
1927-8-2
2929
Riverside
Top of control on road to Hemet, Mt. San Jacinto
Comment
CAS-BOT-BC339303
Lessingia glandulifera var. glandulifera
John Thomas Howell
1927-9-10
2270
Merced
Hopeton Bridge
213
Comment
UC1177361
Lessingia glandulifera var. peirsonii
John Thomas Howell
1957-6-24
32748
Kern
5 mi s Freeman Junction
853
Comment
SBBG28037
Lessingia hololeuca
J. T. Howell
1945-9-2
Marin
San Rafael Hills
Comment
CAS-BOT-BC339665
Lessingia leptoclada
John Thomas Howell
1923-8-2
221
Mariposa
Flats of Wawona Meadow, Wawona
1219
Comment
POM197773
Lessingia leptoclada
John T. Howell
1927-8-28
3069
Tulare
5 miles below Three Rivers.
Comment
JEPS59022
Lessingia nemaclada
John Thomas Howell
1960-7-24
35997
Tehama
8 mi w Mineral
1219
Comment
CAS-BOT-BC330367
Lessingia tenuis
John Thomas Howell
1960-4-23
35213
Stanislaus
Arroyo del Puerto
518
Comment
CAS-BOT-BC444509
Lewisia triphylla
John Thomas Howell
1925-6-28
1229
El Dorado
Trail between Eagle Lake and the Velma Lakes, Lake Tahoe region.
Comment
CAS-BOT-BC283523
Leymus X vancouverensis
John Thomas Howell
1945-6-30
21251
Marin
Stinson Beach
Comment
CAS-BOT-BC283527
Leymus X vancouverensis
John Thomas Howell
1945-6-3
20926
Marin
Shell Beach
Comment
CAS-BOT-BC247638
Leymus cinereus
John Thomas Howell
1934-6-30
12275
Modoc
Duncan Horse Camp.
1355
Comment
GH365305
Leymus pacificus
J. T. Howell
1948-6-6
24335
Unknown
Stinson Beach
Comment
CAS-BOT-BC451679
Lilaea scilloides
John Thomas Howell
1930-5-21
5194
Santa Clara
1 mile south of Morgan Hill
Comment
SDSU11955
Lilium bolanderi
D. F. Howe
1963-7-6
3601
Del Norte
Myrtle Creek on #199, Six Rivers National Forest.
91
Comment
CAS-BOT-BC508274
Lilium kelleyanum
John Thomas Howell
1946-7-15
22394
Inyo
Between Mosquito Flat and Ruby Lake; Rock Creek Lake Basin
Comment
CAS-BOT-BC509448
Lilium kelleyanum
John Thomas Howell
1940-8-10
16103
Fresno
Junction Meadow, Bubbs Creek
Comment
CAS-BOT-BC509451
Lilium kelleyanum
John Thomas Howell
1948-7-29
25186
Fresno
Bubbs Creek Canyon
2834
Comment
RSA216164
Lilium pardalinum
J. T. Howell
1966-7-20
41994
Marin
Area adjacent to the John Thomas Howell Botanical Garden, Tiburon.
Comment
UC750732
Linanthus bolanderi
John Thomas Howell
1945-6-18
21007
Lake
Sawmill Flat Bartlett Mountain
1219
Comment
SD114162
Linanthus californicus
Darley F. Howe
1947-3-22
1511
Los Angeles
Topango Canyon, ca. 6.0 miles from ocean.
Comment Read comments May 22 2014
UC908711
Linanthus liniflorus
J. T. Howell
1926-5-4
1969
Merced
8 mi ssw Merced
Comment
SD42634
Linanthus pungens
Darley F. Howe
1947-6-26
1696
San Bernardino
Top of ridge so. of Big Bear Valley
Comment
POM204108
Linanthus pungens subsp. pulchriflorus
J. T. Howell
1934-7-4
12400
Siskiyou
SE corner of Siskiyou County
Comment
CAS-BOT-BC111967
Lipocarpha micrantha
John Thomas Howell
1950-8-30
27464
Tuolumne
Gravelly flood bed of Tuolumne River at mouth of Moccasin Creek.
274
Comment
CAS-BOT-BC430893
Lithophragma bolanderi
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52797
Calaveras
Camp Nine Road northeast of Vallecito; Sierra Nevada
609
Comment
CAS-BOT-BC430897
Lithophragma bolanderi
John Thomas Howell
1960-6-6
35322
Fresno
Kings Canyon road 8 miles W of Horsehoe Bend; Sierra Nevada
1463
Comment
CAS-BOT-BC432308
Lithophragma campanulatum
John Thomas Howell
1944-7-13
19744
Glenn
Summit Ridge N of Black Butte
Comment
SD114234
Loeseliastrum schottii
Darley F. Howe
1960-4-23
2873
San Bernardino
14 miles north of Essex, Mojave Desert
914
Comment
CAS-BOT-BC269196
Lolium temulentum
John Thomas Howell
1964-4-29
40697
Tuolumne
At Tuolumne River bridge, 2.5 miles east of Jacksonville
198
Comment
RSA201488A
Lomatium vaginatum
J. T. Howell
1947-5-8
23145
Marin
Sausalito
Comment
CAS-BOT-BC241406
Lonicera
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-22
54080
Yuba
About 2 miles northeast of Dobbins on Oregon Hill Road
701
Comment
SD44973
Lonicera hispidula var. californica
Darley F. Howe
1952-6-22
2246
Monterey
Santa Lucia Mountains.
299
Comment
CAS-BOT-BC234803
Lonicera subspicata
John Thomas Howell
1930-10-24
5633
Monterey
17.9 miles east of The Indians, Santa Lucia Mts.
Comment
CAS-BOT-BC198560
Lotus
John Thomas Howell
1928-3-11
s.n.
San Bernardino
At eastern end of Morongo Valley.
914
Comment
CAS-BOT-BC181960
Lotus denticulatus
John Thomas Howell
1934-6-15
12204
Modoc
Dorris Reservoir, 2 mi. E of Alturas.
Comment
UC1177174
Lotus grandiflorus
John Thomas Howell
1944-4-2
19363
Marin
Bolinas Ridge
Comment
SDSU4357
Lotus uliginosus
D. F. Howe
1976-5-17
4892
Ventura
Garretta road just off #159, .5 mile east of #101.
Comment Read comments Sep 20 2014
RSA114320
Ludwigia hexapetala
J. T. Howell
1945-5-20
s.n.
Marin
Tiburon.
Comment
POM179684
Ludwigia palustris var. pacifica
J. T. Howell
1930-10-12
5591
El Dorado
North Fork of Cosumnes River, 6.5 miles north of Plymouth.
Comment
RSA502
Ludwigia peploides subsp. peploides
J. T. Howell
1927-7-14
396
Orange
Santa Ana River bottom, Rancho Santa Ana.
152
Comment
UC860312
Luetkea pectinata
John Thomas Howell
1939-8-2
14872
Siskiyou
Spirit Lake; Marble Mts.
Comment
SD113675
Lupinus andersonii
Darley F. Howe
1961-8-10
3157
Alpine
Kirkwood on Carson Pass Road, #88
2347
Comment
SD75833
Lupinus angustiflorus
Darley F. Howe
1969-8-12
Mono
Hillside east of Sonora Pass
2743
Comment
CAS-BOT-BC196576
Lupinus argenteus var. meionanthus
John Thomas Howell
1943-7-20
18600
Nevada
Castle Peak
Comment
CAS-BOT-BC196602
Lupinus argenteus var. palmeri
John Thomas Howell
1938-8-9
14444
Mono
Between Mammouth [Mammoth] and Mineret [Minaret] Summit
Comment
UC1177459
Lupinus bicolor
John Thomas Howell
1944-5-28
19530
Marin
between Almonte and Mill Valley; between Almonte and Mill Valley
Comment
RSA223354
Lupinus bicolor subsp. microphyllus
J. T. Howell
1967-4-30
42161
Tulare
4.5 miles ENE of Pixley.
84
Comment
UC865066
Lupinus breweri
John Thomas Howell
1938-8-2
14011
Placer
at Brockway Brockway (sand hills on Lake Tahoe); Lake Tahoe
Comment
CAS-BOT-BC196728
Lupinus breweri var. breweri
John Thomas Howell
1944-8-8
20103
Tuolumne
Between Elizabeth Lake and Tuolumne Meadows
Comment
CAS-BOT-BC208888
Lupinus breweri var. breweri
John Thomas Howell
1963-7-11
39835
El Dorado
Tahoe Valley, 3 miles north of Meyers - Sierra Nevada
1911
Comment
CAS-BOT-BC196783
Lupinus breweri var. bryoides
John Thomas Howell
1950-7-22
27177
Tulare
Olancha Peak
3200
Comment
CAS-BOT-BC215069
Lupinus chamissonis
John Thomas Howell
1939-6-18
14779
Marin
Near Mud Lake
Comment
RSA88313
Lupinus densiflorus var. aureus
J. T. Howell
1953-5-24
29016
Tuolumne
Near Standard.
762
Comment
CAS-BOT-BC216768
Lupinus excubitus var. excubitus
John Thomas Howell; Gordon H. True
1971-6-16
47909
Kern
6 miles E of Claraville on road to Kelso Valley
1524
Comment
CAS-BOT-BC202101
Lupinus magnificus var. glarecola
John Thomas Howell
1958-5-24
33333
Inyo
Whitney Portal road
1920
Comment
SDSU4999
Lupinus obtusilobus
D. F. Howe
1962-8-6
3400
Siskiyou
Mt. Shasta, Shasta National Forest.
2438
Comment
CAS-BOT-BC8308
Lupinus ochroleucus
John Thomas Howell
1941-6-1
16244
Mariposa
about midway between Briceburg and Mariposa
Comment
SEINET10450725
Lupinus ochroleucus
John Thomas Howell
1941-6-1
Howell 16244
Mariposa
About midway between briceberg and mariposa.
Comment
SEINET10486151
Lupinus polycarpus
John Thomas Howell
1957-5-5
Howell 32176
San Francisco
Serpentine slope, sierra and 22nd streets. San francisco.
Comment
CAS-BOT-BC8297
Lupinus pratensis
John Thomas Howell
1940-7-31
15767
Tulare
East Lake
2926
Comment
SDSU5004
Lupinus pratensis
D. F. Howe
1941-8-5
1180
Inyo
Lone Pine Creek, Sierra Nevadas.
2743
Comment
POM196443
Luzula comosa
J. T. Howell
1927-3-13
2285
Marin
Point San Quentin.
Comment
RSA44523
Luzula comosa
J. T. Howell
1947-8-8
23896
Inyo
Third to Fifth Lake, Big Pine Lakes.
3201
Comment
CAS-BOT-BC436666
Luzula comosa var. laxa
John Thomas Howell
1943-7-17
18446
Nevada
West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC441308
Luzula macrantha
John Thomas Howell
1953-5-25
29036
Tuolumne
Twain Harte
1127
Comment
CAS-BOT-BC231945
Luzula orestera
John Thomas Howell
1938-8-13
14570
Mariposa
Snow Flat
Comment
CAS-BOT-BC236930
Luzula orestera
John Thomas Howell
1940-8-1
15839
Tulare
Between Reflection Lake and Harrison Pass
3505
Comment
RSA26528
Luzula subcongesta
J. T. Howell
1951-7-18
27919
Tulare
West side, Franklin Pass, Mineral King and vicinity.
3354
Comment
RSA0016030
Lythrum tribracteatum
J. T. Howell
1930-5-30
5208
Solano
1 mile SW of Elmira.
Comment
RSA94363
Madia citriodora
J. T. Howell
1934-7-4
12410
Siskiyou
Between Timbered Crater and Little Hot Springs Valley
Comment
CAS-BOT-BC344081
Madia elegans
John Thomas Howell
1951-7-22
28106
Tulare
Mineral King and Vicinity. Mineral King
2377
Comment
CAS-BOT-BC342934
Madia gracilis
John Thomas Howell
1933-5-28
11368
Alameda
Strawberry Canyon, Berkeley Hills
Comment
CAS-BOT-BC343249
Madia gracilis
John Thomas Howell
1951-6-28
27645
Plumas
Johnsville
1584
Comment
CAS-BOT-BC343420
Madia gracilis
John Thomas Howell; R. C. Barneby
1954-5-13
29543
Sierra
North Fork Yuba River, 4 miles below Downieville
807
Comment
CAS-BOT-BC343431
Madia gracilis
John Thomas Howell
1937-7-22
13320
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC343477
Madia gracilis
John Thomas Howell
1955-6-13
30347
Trinity
6 miles southwest of Douglas City
609
Comment
CAS-BOT-BC343357
Madia gracilis
John Thomas Howell
1931-5-25
6549
Santa Barbara
Mission Ridge, Santa Barbara
Comment
POM225353
Madia gracilis
J. T. Howell
1931-5-25
6549
Santa Barbara
Mission Ridge
Comment
CAS-BOT-BC345215
Madia sativa
John Thomas Howell
1932-9-17
10764
Sonoma
Near Kenwood
Comment
SDSU4746
Madia sativa
D. F. Howe
1962-7-30
3372
Mendocino
1.8 miles north of Pt. Arena on #1.
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-BC203977
Malacothamnus fasciculatus
John Thomas Howell; T. H. Kearney
1950-8-27
27424
Santa Clara
Pacheco Pass Road, 4 miles west of summit
Comment
SD42781
Malacothamnus fasciculatus
D. F. Howe
1947-8-25
1731
San Bernardino
Mill Creek
Comment
SDSU7519
Malacothamnus fasciculatus
D. F. Howe
1963-7-1
San Benito
6.3 miles north of bitterwater on #25
Comment
GH420520
Malacothamnus fremontii
J. T. Howell
1937-7-18
13112
Unknown
2 miles north of Lower Lake
Comment
CAS-BOT-BC345275
Malacothrix californica
John Thomas Howell
1958-5-25
33364
Inyo
Carroll Creek
1676
Comment
CAS-BOT-BC345462
Malacothrix coulteri
John Thomas Howell
1931-3-20
5884
Kings
5 miles n. of Devil's Den
Comment
CAS-BOT-BC347351
Malacothrix floccifera
John Thomas Howell; Gordon H. True
1967-5-29
42319
Inyo
1/3 mile east of head of Nine Mile Canyon
1828
Comment
CAS-BOT-BC347560
Malacothrix floccifera
John Thomas Howell
1937-5-20
12990
Santa Clara
Coyote Creek, 3 miles east of Madrone
Comment
CAS-BOT-BC347705
Malacothrix glabrata
John Thomas Howell
1928-3-11
3444
Riverside
Coachella Valley, Colorado Desert
213
Comment
SD112634
Malacothrix glabrata
Darley F. Howe
1948-5-3
1794
Kern
i mile north of Rosamond
669
Comment Read comments Mar 17 2014
SD56802
Malacothrix incana
Darley F. Howe
1963-5-18
3489
San Luis Obispo
Oso Flaco
Comment
RSA54052
Malacothrix saxatilis var. tenuifolia
J. T. Howell
1948-7-2
24769
Los Angeles
Palos Verde Hills.
Comment
UC750640
Malva nicaeensis
John Thomas Howell
1946-5-16
21900
San Francisco
Van Ness Avenue at Fort Mason, San Francisco San Francisco; , Fort Mason, Van Ness Avenue
Comment
CAS-BOT-BC348188
Matricaria discoidea
John Thomas Howell
1957-5-17
32246
San Francisco
San Francisco. Bayview Hills
Comment
CAS-BOT-BC348110
Matricaria discoidea
John Thomas Howell
1962-4-9
37082
Kern
Kernville
Comment
CAS-BOT-BC348170
Matricaria discoidea
John Thomas Howell
1959-9-26
35046
Plumas
Near Keddie
1005
Comment
RSA54042
Medicago arabica
J. T. Howell
1948-4-18
24212
Sonoma
Hills east of Agua Caliente.
Comment
UCD106744
Medicago minima
John Thomas Howell
1953-5-22
28973
Stanislaus
Knights Ferry.
60
Comment
RSA220030
Medicago polymorpha
J. T. Howell
1957-7-28
32846
San Francisco
Third and Davidson Streets, San Francisco.
Comment
CAS-BOT-BC269236
Melica aristata
John Thomas Howell
1951-7-19
27948
Tulare
Mineral King and vicinity. Monarch Lakes Trail
2438
Comment
SD53094
Melica aristata
Darley F. Howe
1962-5-20
3257
Mendocino
9.1 miles north of Willits on #101
366
Comment
CAS-BOT-BC271093
Melica bulbosa
John Thomas Howell; Gordon H. True
1970-8-11
6193
Nevada
Carpenter Ridge, Sagehen Creek drainage, ca. 7.5 miles west of Truckee - Sierraville Highway
2621
Comment
CAS-BOT-BC269440
Melica californica
John Thomas Howell
1957-5-17
32280
San Francisco
San Francisco. Bayview Hills
Comment
CAS-BOT-BC282060
Melica fugax
John Thomas Howell
1943-7-15
18365
Nevada
Boreal Ridge. W side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC282073
Melica fugax
John Thomas Howell
1937-7-21
13155
Siskiyou
S Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC282048
Melica fugax
John Thomas Howell
1955-6-4
30274
Tuolumne
Kennedy Meadow
1950
Comment
CAS-BOT-BC281334
Melica harfordii
John Thomas Howell
1941-5-25
16204
Marin
Arturo Trail, 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-BC264177
Melica subulata
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54163
Plumas
3.25 miles west of Round Valley Reservoir Dam, Sierra Nevada
1633
Comment
CAS-BOT-BC264160
Melica subulata
John Thomas Howell
1945-8-5
s.n.
Marin
Dipsea Trail, head of Kent Ravine, Mt. Tamalpais
Comment
SD113591
Melilotus indicus
Darley F. Howe
1915-6-3
71
Los Angeles
Claremont
Comment
RSA0121878
Mentzelia dispersa
J. T. Howell
1934-6-12
12042
Modoc
North side of Fandango Valley.
Comment
SD114168
Mentzelia involucrata
Darley F. Howe
1964-2-23
3726
San Diego
5.9 miles west of San Diego-Imperial County line on road to Caliente Hot Springs
Comment
SDSU8080
Mentzelia tricuspis
D. F Howe
1969-4-12
4569
San Bernardino
13 miles east of Goffs.
502
Comment Read comments Oct 25 2011
SD103811
Mentzelia veatchiana
Darley F. Howe
Jun 1978
Alpine
Along highway 89, 10 miles south of Markleeville.
Comment
UC517555
Mentzelia veatchiana
John Thomas Howell
1928-4-2
3670
Inyo
near Dante's View; Black Mts.
Comment
SD112946
Mesembryanthemum crystallinum
Darley F. Howe
1935-5-19
217
San Diego
Otay
Comment
CAS-BOT-BC428882
Micranthes californica
John Thomas Howell
1962-6-16
37637
Plumas
Lewisia Rock, Feather River.
640
Comment
CAS-BOT-BC348383
Micropus californicus var. californicus
John Thomas Howell
1929-4-25
4197
Merced
Hills bordering the San Joaquin Valley, 5 miles ne. of Merced
Comment
CAS-BOT-BC348666
Microseris acuminata
John Thomas Howell
1930-4-13
4701
Calaveras
3 miles west of San Sndreas [Andreas] on road to Valley Springs
Comment
CAS-BOT-BC348749
Microseris bigelovii
John Thomas Howell
1947-4-23
23061
Marin
Drakes Estero west of Mt. Vision
Comment
CAS-BOT-BC348929
Microseris douglasii subsp. douglasii
John Thomas Howell
1942-6-21
16979
Marin
Carson Ridge
Comment
CAS-BOT-BC348936
Microseris douglasii subsp. douglasii
John Thomas Howell
1941-5-25
16221
Marin
Potrero Meadow, Mt. Tamalpais
Comment
POM203302
Microseris douglasii subsp. douglasii
J. T. Howell
1931-4-3
6112
Napa
Pope Creek, 7 miles from Monticello, Napa Range
Comment
CAS-BOT-BC349185
Microseris elegans
John Thomas Howell
1931-4-4
6170
Napa
Napa Valley at Myrtledale Hot Springs
Comment
CAS-BOT-BC322798
Microseris sylvatica
John Thomas Howell
1971-6-17
48045
Kern
1 mile east of Bodfish Gap, Sierra Nevada
1310
Comment
CAS-BOT-BC9701
Mimulus barbatus
John Thomas Howell; Thomas C. Fuller; G. Douglas Barbe
1980-7-16
53863
Tulare
Paloma Meadows, Kern Plateau
2590
Comment
CAS-BOT-BC9736
Mimulus deflexus
John Thomas Howell
1949-7-18
25465
Inyo
Cottonwood Lakes
3352
Comment
SBBG28944
Mimulus douglasii
J. T. Howell
1940-5-19
Napa
upper Saint Helena Crk
Comment
RSA727
Mimulus floribundus
Thomas Howell
1927-7-27
492
Orange
Santa Ana River bottom.
Comment
RSA78609
Mimulus nanus var. nanus
J. T. Howell
1944-7-13
19740
Glenn
Summit north of Black Butte.
Comment
CAS-BOT-BC174577
Minuartia californica
John Thomas Howell
1948-4-18
24207
Sonoma
Hills east of Agua Caliente
Comment
CAS-BOT-BC174679
Minuartia cismontana
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52980
Calaveras
2 1/2 miles sw. of Avery on Sheepranch road
1036
Comment
CAS-BOT-BC388681
Minuartia douglasii
John Thomas Howell
1940-5-26
15529
Marin
Little Carson Falls
Comment
CAS-BOT-BC388727
Minuartia douglasii
John Thomas Howell
1955-5-21
30239
Monterey
Hastings Reservation, Santa Lucia Mts.
Comment
CAS-BOT-BC388597
Minuartia douglasii
John Thomas Howell; Walter Knight; Irja Knight; Gordon True
1968-6-11
2349
Plumas
Butterfly Botanical Area. Confluence of Spanish Creek & Butterfly Creek
Comment
CAS-BOT-BC388758
Minuartia douglasii
John Thomas Howell
1933-6-4
11393
Napa
Hills east of Napa
Comment
CAS-BOT-BC388918
Minuartia douglasii
John Thomas Howell; Gordon H. True
1968-5-14
44379
Tulare
Cherry Hill Road at Rincon Trail, Brush Creek Canyon. Kern Plateau
1463
Comment
SDSU2961
Minuartia howellii
D. F. Howe
1969-5-31
4605
Del Norte
Rowdy Creek Road.
518
Comment
CAS-BOT-BC174705
Minuartia nuttallii
John Thomas Howell
1947-7-25
23679
San Bernardino
Mt. San Gorgonio, San Bernardino Mts.
3505
Comment
CAS-BOT-BC181598
Minuartia nuttallii var. gracilis
John Thomas Howell
1949-7-25
25748
Tulare
Siberian Pass Creek
3352
Comment
CAS-BOT-BC181602
Minuartia nuttallii var. gracilis
John Thomas Howell
1958-8-1
34157
Fresno
Ridge north of Dougherty Meadow - Sierra Nevada
3048
Comment
NY446330
Minuartia rubella
J. T. Howell
1946-7-26
22774
Inyo
Mono Mesa
3657.6
Comment
SD129847
Mirabilis laevis var. crassifolia
Melanie Howe
1990-2-10
73
San Diego
Along trail on hillside above corner lot at intersection of Golfcrest & Mission Gorge. (IPB 1/06)
Comment
CAS-BOT-BC433001
Mitella breweri
John Thomas Howell
1940-7-30
15719
Tulare
East Lake
2926
Comment
SDSU7210
Monardella breweri
D. F Howe
1976-6-2
4924
Ventura
0.1 mile north of Santa Rosa valley Blvd on Las Posas Rd.
213
Comment Read comments May 29 2015
SD158302
Monardella lanceolata
Melanie Howe, Margaret McIntosh
1998-7-31
San Diego
Near Iron Mountain, next to trail leading to Table Rock (mak 2/06)
671
Comment
RSA670
Monardella lanceolata var. lanceolata
J. T. Howell
1927-6-11
87
San Bernardino
Highland Avenue, east of Upland.
305
Comment
SD45583
Monardella linoides
Darley F. Howe
1953-8-16
2303
San Bernardino
San Bernardino Peak, trail from Glen Martin
1981
Comment Read comments Jun 26 2012
SD50767
Monardella odoratissima subsp. glauca
Darley F. Howe
none given
Mono
14 miles west of #395 on Sonora Pass Road
2743
Comment
SD149145
Monardella odoratissima subsp. pallida
John Thomas Howell
1975-7-22
51370
Plumas
2.0 miles northwest of Spring Garden.
1173
Comment
RSA40024
Monolepis spathulata
J. T. Howell
1944-8-9
20191
Tuolumne
Near Parsons Lodge, Tuolumne Meadows
Comment
POM259580
Monolopia gracilens
J. T. Howell
1937-5-20
12991
Santa Clara
Coyote Creek, 3 miles east of Madrone.
Comment
CAS-BOT-BC349509
Monolopia lanceolata
John Thomas Howell
1931-3-23
5992
Monterey
Poncho Rico Canyon, 6 miles east of San Bernardo
Comment
CAS-BOT-BC444782
Montia chamissoi
John Thomas Howell; Gordon H. True
1967-8-7
43487
Tulare
Beach Creek just north of Beach Meadow. Kern Plateau.
2377
Comment
CAS-BOT-BC444934
Montia fontana
John Thomas Howell
1956-3-24
31152
Monterey
Santa Lucia Mountains. About 5 miles north of Jolon
Comment
CAS-BOT-BC445093
Montia linearis
John Thomas Howell; Gordon H. True
1967-6-11
42576
Plumas
Meadow at Quincy
1036
Comment
SD51069
Mortonia utahensis
Darley F. Howe
1960-4-27
2891
Inyo
Pass through Nopah Mountains, 4.0 miles on road east of Shoshone.
760
Comment
SD56726
Mucronea californica
Darley F. Howe
1963-6-29
3561
Santa Barbara
1.3 mi. from #1 on Vandenberg Air Force Rd.
91
Comment
CAS-BOT-BC263345
Muhlenbergia andina
John Thomas Howell
1970-9-22
47314
Tulare
Fairview, Sierra Nevada
1066
Comment
CAS-BOT-BC260552
Muhlenbergia filiformis
John Thomas Howell
1948-7-22
24864
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC263803
Muhlenbergia filiformis
John Thomas Howell
1944-8-5
19931
Tuolumne
Soda Springs, Tuolumne Meadows
Comment
CAS-BOT-BC263807
Muhlenbergia filiformis
John Thomas Howell
1944-8-5
19930
Tuolumne
Soda Springs, Tuolumne Meadows
Comment
CAS-BOT-BC267043
Muhlenbergia filiformis
John Thomas Howell
1937-7-25
13445
Siskiyou
Caribou Basin, Salmon - Trinity Alps
2286
Comment
SDSU3276
Muhlenbergia filiformis
D. F. Howe
1964-7-21
3855
Fresno
Meadow 6.3 miles on road east of Huntington Lake, Sierra National Forest
2835
Comment
UCD86660
Muhlenbergia filiformis
John Thomas Howell
1943-7-14
18324
Nevada
West side of Donner Pass near Norden.
2133
Comment
SEINET10600079
Muhlenbergia montana
John Thomas Howell
1944-8-14
Howell 20468
Tuolumne
Tuolume Canyon above Glen Aulin,
Comment
CAS-BOT-BC275019
Muhlenbergia richardsonis
John Thomas Howell; Gordon H. True
1967-9-19
43868
Tulare
Flood plain of Kern River S Fork, Kennedy Meadows Campground, Kern Plateau
1859
Comment
CAS-BOT-BC274908
Muhlenbergia rigens
John Thomas Howell
1951-8-21
28292
Nevada
Grass Valley
731
Comment
CAS-BOT-BC392268
Myosurus apetalus
John Thomas Howell
1962-6-19
37865
Plumas
5.8 miles e. of Beckwourth
1493
Comment
NY1082235
Nama rothrockii
J. T. Howell
1958-5-27
33518
Inyo
Sierra Nevada. Bishop Creek
2042
Comment Read comments Jun 5 2012
CAS-BOT-BC259879
Nassella cernua
John Thomas Howell
1928-4-22
3753
Ventura
At Point Mugu
Comment
UC1106126
Nassella cernua
John Thomas Howell
1946-5-19
21916
Marin
Carson Ridge
Comment
CAS-BOT-BC259990
Nassella lepida
John Thomas Howell
1957-5-28
32518
San Francisco
NW side of Lone Mountain, San Francisco
Comment
CAS-BOT-BC260039
Nassella lepida
John Thomas Howell
1931-4-10
6202
Santa Barbara
Valle del Medio, Santa Cruz Island
Comment
GH361605
Nassella lepida
J. T. Howell
1946-5-19
21916
Unknown
Carson Ridge
Comment
CAS-BOT-BC260144
Nassella pulchra
John Thomas Howell
1947-4-4
s.n.
Marin
San Raphael Hills
Comment
UCD87552
Nassella pulchra
John Thomas Howell
1977-5-29
52363
San Francisco
Fillmore and McAllister streets, San Francisco.
Comment
POM203802
Navarretia breweri
J. T. Howell
1934-6-12
11988
Merced
9 miles S of Davis Creek
Comment Read comments Jan 3 2022
GH385264
Navarretia cotulifolia
J. T. Howell
1938-5-28
13806
Unknown
Near Hollister
Comment
RSA580
Navarretia hamata
J. T. Howell
1927-8-7
605
San Diego
Near Dulzura Ranch.
335
Comment
JEPS15003
Navarretia heterodoxa
John Thomas Howell
1937-7-4
13056
Napa
Wooden Valley Grade
Comment
UC856837
Navarretia mellita
John Thomas Howell
1938-6-30
13938
Contra Costa
Head of Siesta Valley
Comment
CAS-BOT-BC232742
Navarretia sinistra subsp. pinnatisecta
John Thomas Howell
1955-7-17
30719
Trinity
Near Hayfork
731
Comment
UCD48704
Navarretia tagetina
John Thomas Howell
1953-5-24
29021
Tuolumne
Near Chinese Camp, Tuolumne Co.
381
Comment
UC526145
Navarretia viscidula
John Thomas Howell
1934-6-17
12232
Tehama
near Cottonwood
Comment
SEINET10906128
Nemacladus interior
John Thomas Howell, Rupert C. Barneby
1954-5-11
Howell 29415
Madera
Burn, 2 miles west of Oakhurst
671
Comment
SD113510
Nemacladus pinnatifidus
Darley F. Howe
1940-6-7
1022
San Diego
Base of old Viejas Grade
Comment
SEINET10972559
Nemacladus secundiflorus
Howell
1958-5-22
Howell 33166
Tulare
Kern River Canyon near Roads End Post Office
1067
Comment
CAS-BOT-BC230579
Nemophila parviflora var. quercifolia
John Thomas Howell; Gordon H. True
1968-5-13
44273
Tulare
North Meadow Creek, Kern Plateau
1981
Comment
CAS-BOT-BC260314
Neostapfia colusana
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True
1981-5-21
54035
Solano
Jepson Prairie Preserve of The Nature Conservancy, in the vicinity of Olcutt Lake about 12 miles S of Dixon
6
Comment
SD50723
Notholithocarpus densiflorus
Darley F. Howe
1959-7-27
2816
Santa Barbara
Santa Inez mountains, 15 miles west of San Marcus Pass
1157
Comment
SDSU6709
Notholithocarpus densiflorus
D. F. Howe
1961-7-24
3066
Santa Cruz
3 miles eat of the Big Basin.
427
Comment
CAS-BOT-BC516043
Nothoscordum gracile
John Thomas Howell
1958-6-17
33630
San Francisco
Divisadero Street, near Golden Gate Ave., San Francisco
Comment
SD114174
Oenothera primiveris subsp. bufonis
Darley F. Howe
1969-5-17
4595
San Bernardino
Clark Mountain
1768
Comment
SD113592
Olneya tesota
Darley F. Howe
1954-5-23
2357
San Diego
Agua Caliente Hot Springs.
Comment
CAS-BOT-BC349972
Oreostemma alpigenum var. andersonii
John Thomas Howell
1958-8-13
34390
Madera
Near Isberg Lake
2987
Comment
CAS-BOT-BC350070
Oreostemma alpigenum var. andersonii
John Thomas Howell
1944-8-12
20390
Tuolumne
Gaylor Lakes
3291
Comment
CAS-BOT-BC355616
Oreostemma alpigenum var. andersonii
John Thomas Howell
1949-7-21
25565
Tulare
Rock Creek
3200
Comment
SDSU6321
Oreostemma alpigenum var. andersonii
D. F. Howe
1941-8-8
1393
Inyo
Lone Pine Creek, Sierra Nevadas.
3139
Comment
CAS-BOT-BC327734
Oreostemma peirsonii
John Thomas Howell
1949-7-25
25719
Tulare
Siberian Pass Creek
3352
Comment
CAS-BOT-BC499887
Orobanche fasciculata
John Thomas Howell
1962-7-8
38229
Kern
Sierra Nevada, Greenhorn Mountains. Black Mt., south side
1127
Comment
CAS-BOT-BC499918
Orobanche fasciculata
John Thomas Howell
1927-5-8
2377
Marin
East slope of Mt. Tamalpais
Comment
SEINET6031105
Orobanche fasciculata
J. T. Howell, G. H. True., Jr.
1971-6-14
47691
Kern
East slope of Greenhorn Range, 5 mi. east of Wofford
1280
Comment
CAS-BOT-BC355698
Orochaenactis thysanocarpha
John Thomas Howell
1949-8-7
26112
Tulare
Rock Creek
3169
Comment
POM180617
Orthocarpus faucibarbatus var. albidus
J. T. Howell
1930-6-8
5278
Sonoma
Hillside overlooking the ocean, 8 miles N of Bodega Bay
Comment
POM204483
Orthocarpus purpurascens
J. T. Howell
1933-4-22
11065
San Benito
Between Paicines and Pinnacles P.O.
Comment
UCD110795
Oxalis micrantha
John Thomas Howell
1946-6-20
22099
Marin
Stinson Beach.
Comment
SDSU9642
Oxyria digyna
D. F. Howe
1941-8-9
1301
Inyo
Lone Pine Creek, Sierra Nevada.
3353
Comment
CAS-BOT-BC413247
Oxytheca dendroidea subsp. dendroidea
John Thomas Howell
1959-9-25
35026
Plumas
Summit of Beckwourth Pass
1588
Comment
RSA189
Oxytheca trilobata
J. T. Howell
1928-7-8
1047
Riverside
Santa Ana Mountains above Glen Ivy
1220
Comment Read comments Jun 22 2019
CAS-BOT-BC318277
Packera breweri
John Thomas Howell
1957-5-19
32346
Stanislaus
Mt. Oso.
1005
Comment
CAS-BOT-BC316776
Packera cana
John Thomas Howell
1949-7-23
25648
Tulare
Soldier Lake
3352
Comment
CAS-BOT-BC50277
Packera eurycephala var. eurycephala
John Thomas Howell
1934-6-11
11915 A
Modoc
Parker Creek.
1584
Comment
CAS-BOT-BC316879
Packera eurycephala var. eurycephala
John Thomas Howell
1935-5-12
12626
Napa
Pope Creek Canyon 1 mile below Samuels Springs
Comment
SD51373
Packera multilobata
Darley F. Howe
1961-6-19
3052
Inyo
9 miles north of Westgard Pass, White Mts.
3050
Comment
CAS-BOT-BC317197
Packera werneriifolia
John Thomas Howell
1948-7-20
24794
Inyo
Mt. Gould, Fresno-Inyo Co. line.
3810
Comment
CAS-BOT-BC317211
Packera werneriifolia
John Thomas Howell
1944-8-10
20263
Mono
Glacier Canyon, Mt. Dana.
Comment
CAS-BOT-BC10429
Paeonia brownii
J. T. Howell
1934-6-14
12146
Lassen
Near Lost Lake, Warner Mountains
2438
Comment
CAS-BOT-BC121013
Paeonia brownii
J. T. Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54235
Plumas
About 4 miles south of Mt. Hough Road
1645
Comment
CAS-BOT-BC327864
Palafoxia arida
John Thomas Howell
1927-11-26
3238
San Diego
Central Borrego Valley, w. Colorado Desert
182
Comment
UCD89807
Panicum capillare subsp. hillmanii
John Thomas Howell
1973-7-10
49808
Lassen
Doyle.
Comment
CAS-BOT-BC272306
Pappostipa speciosa
John Thomas Howell; Gordon H. True
1967-7-3
42807
Tulare
Between Lamont Meadow and Long Valley, Kern Plateau, Sierra Nevada
1767
Comment
CAS-BOT-BC274078
Pappostipa speciosa
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-13
54572
Mono
0.7 mile south of Paradise Camp on Old Sherwin Grade Road
1463
Comment
CAS-BOT-BC274135
Pappostipa speciosa
John Thomas Howell; Gordon H. True
1969-5-15
45783
Kern
Kern River Canyon 9 miles from mouth of canyon
548
Comment
CAS-BOT-BC253954
Parapholis incurva
John Thomas Howell
1963-5-18
39380
Monterey
Elkhorn Slough
Comment
CAS-BOT-BC413446
Parietaria judaica
John Thomas Howell
1973-4-19
49144
Monterey
Pacific Grove
Comment
UC1177428
Paronychia franciscana
John Thomas Howell
1941-6-8
16259
Marin
hills ne San Rafael
Comment
UC571151
Parvisedum pumilum
John Thomas Howell
1929-4-11
4147
Merced
7 1/2 mi sw of Merced (on Los Banos Road, San Joaquin Valley,); San Joaquin Valley, Los Banos Road
45
Comment
CAS-BOT-BC259689
Paspalum dilatatum
John Thomas Howell
1946-8-17
22860
Sonoma
Cunningham Marsh
Comment
CAS-BOT-BC259716
Paspalum distichum
John Thomas Howell
1963-8-5
39935
Monterey
Along Watsonville - San Juan Road, about 2 miles S of Aromas
Comment
CAS-BOT-BC202835
Paxistima myrsinites
John Thomas Howell
1937-7-23
13369
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
SDSU3977
Pectocarya penicillata
D. F. Howe
1946-6-2
1524
San Bernardino
Highway between Adelanto & Hesperia, Mojave Desert.
Comment
UC886594
Pedicularis bracteosa var. flavida
John Thomas Howell
1939-8-3
15010
Siskiyou
Spirit Lake; Marble Mountains
Comment
SDSU10866
Pedicularis semibarbata
D. F. Howe
1947-6-23
1625
San Bernardino
Furnace Creek N of Holcomb Valley, San Bernardino Mtns.
Comment
CAS-BOT-BC71299
Pellaea mucronata
John Thomas Howell
1960-6-8
35456
Fresno
2 mi. westerly from Sequoia Lake
1524
Comment
SD61052
Penstemon anguineus
Darley F. Howe
1964-8-7
3945
Humboldt
8.2 mi. from #96 on Mill Creek Road. Hoopa Valley
1067
Comment
SD64392
Penstemon azureus
Darley F. Howe
1966-6-13
Nevada
South side of Bear Valley, 26.3 miles east of Nevada City on hwy. #20
1615
Comment
NY572628
Penstemon caesius
J. T. Howell
1970-6-24
46716
Tulare
North Manter Creek, Big Meadow to Manter Meadow. Kern Plateau.
2347.0
Comment
CAS-BOT-BC265491
Penstemon heterodoxus
John Thomas Howell
1948-7-24
24960
Fresno
Bullfrog Lake
3240
Comment
NY627264
Penstemon neotericus
J. T. Howell
1973-7-10
49758
Lassen
Near Westwood, Sierra Nevada
1554.5
Comment
CAS-BOT-BC239600
Penstemon rydbergii var. oreocharis
John Thomas Howell
1951-6-28
27642
Plumas
Johnsville
1584
Comment
SDSU10963
Penstemon rydbergii var. oreocharis
D. F. Howe
1964-7-30
2677
Mono
13 miles W of #395, on Sonora Pass Road.
2743
Comment
SD141836
Penstemon spectabilis
Melanie Howe
1989-6-10
63
San Diego
Hot Springs Mountain, Los Coyotes Indian Reservation. (IPB 11/06)
Comment
SDSU10979
Penstemon stephensii
D. F. Howe
1960-4-24
2879
San Bernardino
10 miles N of road to Mitchell's Cavern, E face of Providence Mtns.
1219
Comment
SD60975
Penstemon thurberi
Darley F. Howe
1964-5-15
3763
San Bernardino
Kelso sand dunes
762
Comment
CAS-BOT-BC327982
Pentachaeta alsinoides
John Thomas Howell
1941-6-29
s.n.
Marin
Angel Island, SE side
Comment
CAS-BOT-BC327995
Pentachaeta alsinoides
John Thomas Howell
1933-6-4
11386
Napa
Hills E of Napa
Comment
RSA926
Pentachaeta aurea
J. T. Howell
1927-8-2
554
Riverside
Near Strawberry Valley, Mt. San Jacinto.
1677
Comment
CAS-BOT-BC71564
Pentagramma pallida
John Thomas Howell; R. C. Barneby
1954-5-11
29457
Mariposa
4 miles south of Mormon Bar
441
Comment
CAS-BOT-BC222768
Perideridia parishii
John Thomas Howell
1969-9-13
46119
Sierra
Little Truckee River near outlet of Webber Lake
2042
Comment
CAS-BOT-BC222783
Perideridia parishii
John Thomas Howell; Gordon H. True
1968-5-13
44335
Tulare
Cherry Hill Road at Rincon Trail, Brush Creek Canyon, Kern Plateau
1463
Comment
CAS-BOT-BC356058
Perityle emoryi
John Thomas Howell
1928-4-21
3733
Ventura
At Pt. Mugu
60
Comment
CAS-BOT-BC413730
Persicaria hydropiper
John Thomas Howell
1961-9-23
36847
Plumas
Indian Valley
1082
Comment
CAS-BOT-BC419016
Persicaria lapathifolia
J. T. Howell
1987-7-30
s.n.
Marin
Community Vegetable Garden, Nova Albion St. across from Cermenho Ct., San Rafael
Comment
CAS-BOT-BC419215
Persicaria maculosa
John Thomas Howell
1924-7-24
481
Mariposa
Wawona
1219
Comment
CAS-BOT-BC419342
Persicaria punctata
John Thomas Howell
1942-8-30
s.n.
Marin
Muir Beach
Comment
NY1052549
Phacelia bicolor
J. T. Howell
1958-5-27
33503
Inyo
Bishop Creek
2133.6
Comment
RSA201453
Phacelia californica
J. T. Howell
1947-6-18
23252
Marin
Salmon Creek - Chileno Valley summit.
Comment
RSA594
Phacelia cicutaria var. hispida
J. T. Howell
1927-7-26
477
Orange
Claymine Canon near Sierra Peak.
244
Comment
RSA112768
Phacelia ciliata
J. T. Howell
1929-4-25
4192
Merced
Five miles northeast of Merced.
Comment
GH402967
Phacelia ciliata var. opaca
J. T. Howell
1929-5-19
4210
Unknown
Low clay hills, 5 miles northwest of Merced
Comment
SD113324
Phacelia crenulata var. ambigua
Darley F. Howe
1958-4-12
San Bernardino
East base of Bristol Mountains, Mojave Desert.
Comment
POM299080
Phacelia distans
J. T. Howell
1930-8-3
5437
Monterey
Point Lobos.
Comment
SD112818
Phacelia distans
Darley F. Howe
1937-4-10
482
San Diego
Borrego Valley
Comment
POM299068
Phacelia distans
J. T. Howell
1928-6-24
2590
Orange
Olinda.
152
Comment
UC702989
Phacelia distans
John Thomas Howell
1928-5-27
3856
Ventura
between Cuddy Ranch and Lockwood Valley; Mt. Pinos region
Comment
POM299309
Phacelia douglasii var. petrophila
J. T. Howell
1931-3-18
5858
Fresno
At head of Oil Canyon.
Comment
SD113336
Phacelia hastata subsp. compacta
Darley F. Howe
1958-7-28
2641
Mono
1 mi. N of Crest View Camp
2440
Comment
SD71221
Phacelia imbricata
John Thomas Howell
1947-6-18
23252
Marin
Salmon Creek, Chileno Valley summit.
Comment
SD72116
Phacelia mutabilis
John Thomas Howell
1958-8-2
34235
Fresno
Sierra Nevada mtns: Along Kings Canyon road in burned area at Cherry Gap.
Comment
RSA597
Phacelia parryi
J. T. Howell
1928-6-29
1000
Los Angeles
Seminole Hot Springs Road, Santa Monica Mountains
457
Comment
UCR95797
Phacelia purpusii
J. T. Howell
1960-6-7
35410
Fresno
Sierra Nevada Mtns, Kings Canyon Road, 6.5 mi NE of Cherry Gap
1555
Comment
GH401063
Phacelia ramosissima
J. T. Howell
1928-6-14
3894
Unknown
Surprise Canyon, Panamint Mts.
2286
Comment
CAS-BOT-BC159058
Phacelia ramosissima var. austrolitoralis
John Thomas Howell
1931-5-27
6554
Ventura
Dune 10 miles nw. of Ventura
Comment
CAS-BOT-BC159067
Phacelia ramosissima var. eremophila
John Thomas Howell
1943-7-16
18408
Nevada
West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC159010
Phacelia ramosissima var. latifolia
John Thomas Howell
1958-5-22
33088
Tulare
Kern River Canyon 6 miles south of Roads End Post Office
944
Comment
CAS-BOT-BC356067
Phalacroseris bolanderi
John Thomas Howell
1958-8-9
34236
Madera
Jackass Meadow
2133
Comment
SD53142
Phalacroseris bolanderi
Darley F. Howe
1962-8-17
3446
Fresno
15.6 miles east of Shaver Lake on #168, Sierra National Forest
2225
Comment
CAS-BOT-BC265770
Phalaris aquatica
John Thomas Howell
1946-6-13
22018
Marin
Ignacio
Comment
CAS-BOT-BC265788
Phalaris aquatica
John Thomas Howell
1963-5-18
39342
Monterey
Near Aromas
Comment
CAS-BOT-BC265833
Phalaris arundinacea
John Thomas Howell
1951-8-21
28236
Plumas
Mohawk, Sierra Nevada
1371
Comment
CAS-BOT-BC265871
Phalaris canariensis
John Thomas Howell
1957-5-22
32398
San Francisco
Bayview Hills, San Francisco
Comment
CAS-BOT-BC265918
Phalaris lemmonii
John Thomas Howell; R. C. Barneby
1954-5-8
s.n.
Tulare
Tule River Valley, 4.5 miles below Springville, Sierra Nevada
243
Comment
UCD88997
Phalaris lemmonii
John Thomas Howell
1971-3-23
47586
Merced
At San Joaquin River bridge, 5 miles NE of Gustine.
24
Comment
CAS-BOT-BC250635
Phalaris minor
John Thomas Howell
1956-6-3
31469
San Francisco
At east end of Shafter St., San Francisco
Comment
CAS-BOT-BC250745
Phalaris paradoxa
John Thomas Howell; Walter Knight; Irja Knight
1987-6-4
6243
Sonoma
Todd Road Preserve
24
Comment
CAS-BOT-BC128861
Philadelphus
John Thomas Howell
1962-6-16
37635
Plumas
Lewisia Rock, Feather River North Fork - Sierra Nevada
640
Comment
CAS-BOT-BC77436
Philadelphus lewisii
John Thomas Howell
1937-7-26
13560
Siskiyou
Between Big Flat and Caribou Gulch
Comment
UCD89311
Phleum alpinum
John Thomas Howell; Gordon True
1967-8-7
43458
Tulare
On Beach Creek just north of Beach Meadow. Kern Plateau.
2377
Comment
SD114157
Phlox speciosa subsp. nitida
Darley F. Howe
1977-7-5
5001
Siskiyou
Area north of Mt. Shasta.
1463
Comment
CAS-BOT-BC58305
Phoenicaulis cheiranthoides
John Thomas Howell
1934-6-13
12104
Modoc
North Fk. of Barber Creek.
1828
Comment
CAS-BOT-BC222602
Pholistoma auritum var. auritum
John Thomas Howell
1927-6-17
s.n.
Orange
Santa Ana Canon [Canyon]
152
Comment
SD50780
Pholistoma auritum var. auritum
D. F. Howe
1959-8-18
Santa Barbara
Refugio Pass, Santa Inez Mts.
Comment
CAS-BOT-BC134929
Phoradendron bolleanum
John Thomas Howell
1948-4-26
24270
Kern
Tehachapi Mts. 7 miles from Mohave
Comment
CAS-BOT-BC134936
Phoradendron bolleanum
John Thomas Howell
1970-9-23
47325
Kern
Near Tiger Flat, E side of Sunday Peak. Greenhorn Mountains. Sierra Nevada
1981
Comment
RSA41421
Phoradendron juniperinum subsp. juniperinum
D. F. Howe
1948-8-2
s.n.
San Bernardino
Holcomb Valley.
Comment
CAS-BOT-BC141168
Phoradendron serotinum subsp. macrophyllum
John Thomas Howell
1971-1-15
47569
Monterey
E Garrison Road, Camp Roberts (N of San Miguel)
Comment
CAS-BOT-BC141279
Phoradendron serotinum subsp. tomentosum
John Thomas Howell
1962-9-22
38703
Kern
1.5 miles W of Wofford. Greenhorn Moutains. Sierra Nevada
914
Comment
CAS-BOT-BC141323
Phoradendron serotinum subsp. tomentosum
John Thomas Howell
1960-5-2
35262
Mariposa
Hwy 49 SE of Coulterville. Sierra Nevada
Comment
UCD126759
Physalis lancifolia
John Thomas Howell
1967-11-3
44058
Tulare
near north fence, about 4.5 miles ENE of Pixley, Valley Grassland.
83
Comment
JEPS8966
Physalis philadelphica
John Thomas Howell
1927-7-28
2869
Orange
Santa Ana Canyon, Rancho Santa Ana Santa Ana Canyon; , Rancho Santa Ana
152
Comment
UCD98430
Phytolacca heterotepala
John Thomas Howell
1959-10-2
35095
San Francisco
Near Academy buildings, Golden Gate Park.
Comment
RSA201396
Phytolacca heterotepala
J. T. Howell
1959-8-28
34602
San Francisco
Vacant lot, Geary Street between Gough and Franklin Streets, San Francisco.
Comment
CAS-BOT-BC71805
Pilularia americana
John Thomas Howell
1929-4-20
4176
Merced
2 miles NW. of Merced on Oakdale Road
51
Comment
CAS-BOT-BC78413
Pinus balfouriana
John Thomas Howell
1940-8-8
16061
Tulare
Between Reflection Lake and Harrison Pass
Comment
NY49387
Pinus balfouriana
J. T. Howell
1970-6-25
46799
Tulare
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
UC336179
Pinus contorta subsp. bolanderi
M. A. Howe
1896-5-5
Mendocino
near Mendocino City (White Plains)
Comment
CAS-BOT-BC73237
Pinus contorta subsp. murrayana
John Thomas Howell
1946-7-26
22769
Inyo
Mono Mesa
3657
Comment
CAS-BOT-BC73214
Pinus flexilis
John Thomas Howell
1947-8-3
23699
Inyo
Big Pine Creek Trail
3048
Comment
CAS-BOT-BC78706
Pinus jeffreyi
John Thomas Howell; Gordon H. True
1970-7-14
5517
Sierra
At Verdi Peak Lookout, Verdi Range
2560
Comment
CAS-BOT-BC78933
Pinus monticola
John Thomas Howell; Gordon H. True
1970-7-14
5515
Sierra
At Verdi Peak Lookout, Verdi Range
2560
Comment
CAS-BOT-BC72826
Pinus ponderosa
John Thomas Howell
1960-8-20
36206
Tehama
Near Lassen Volcanic National Park, Morgan
1463
Comment
CAS-BOT-BC80002
Pinus radiata
John Thomas Howell
1964-6-28
40723
San Luis Obispo
near Cambria, adjacent to the Protestant Cemetery (where the cones were collected)
Comment
CAS-BOT-BC254430
Piptatherum miliaceum
John Thomas Howell
1956-7-1
31635
San Francisco
Embarcadero and Lombard Street, San Francisco
Comment
CAS-BOT-BC254402
Piptatherum miliaceum
John Thomas Howell
1954-10-30
30114
Alameda
Vacant lot, Arlington Avenue near city limits, Berkeley
Comment
SD72393
Plagiobothrys arizonicus
Darley F. Howe
1968-3-23
Inyo
Seven miles north of Trona.
Comment
POM226098
Plagiobothrys bracteatus
J. T. Howell
1933-5-14
11232
Contra Costa
St. Mary s College
Comment
POM204149
Plagiobothrys greenei
J. T. Howell
1934-3-27
11803
Sonoma
Summit of Bennett Valley road from Glen Ellen to Santa Rosa
Comment
CAS-BOT-BC230961
Plagiobothrys hispidulus
John Thomas Howell
1962-6-18
37746
Plumas
Sierra Valley near Beckwourth
1487
Comment
UC421592
Plagiobothrys nothofulvus
John Thomas Howell
1929-4-9
4135
Merced
on Oakdale Road 7 mi from Merced (low hills bordering San Joaquin Valley)
Comment
RSA39949
Plagiobothrys scouleri var. hispidulus
J. T. Howell
1943-7-19
18581
Placer
Summit Valley
Comment
GH420180
Plagiobothrys scouleri var. penicillatus
J. T. Howell
1934-6-12
12034
Unknown
Plum Valley, Warner Mts.
Comment
POM226100
Plagiobothrys stipitatus
J. T. Howell
1933-4-1
10922
Sonoma
Petaluma
Comment
CAS-BOT-BC189649
Plagiobothrys torreyi
John Thomas Howell
1924-5-30
357
Mariposa
Wawona
1219
Comment
CAS-BOT-BC230631
Plagiobothrys torreyi
John Thomas Howell
1944-8-7
20101
Tuolumne
Tuolumne Meadows, Near Parsons Lodge
Comment
CAS-BOT-BC228500
Plagiobothrys uncinatus
John Thomas Howell
1937-5-19
12950
San Benito
The Pinnacles
Comment
SD71286
Plantago erecta
John Thomas Howell
1957-5-17
32283
Alameda
Bayview Hills, San Francisco
Comment
SD64364
Plantago indica
Darley F. Howe
1966-8-27
Siskiyou
8.5 miles north of Weed on Highway 97.
1189
Comment
JEPS74316
Plantago major
John Thomas Howell
1973-7-25
49980
Merced
Gustine, city park Gustine
30
Comment
UC710605
Plantago truncata subsp. firma
John Thomas Howell
1944-5-21
19500
Marin
n side Mt. Tamalpais; , Lagunitas Meadows
243
Comment
CAS-BOT-BC93151
Platanus racemosa
John Thomas Howell
1973-7-25
49956
Stanislaus
Orestimba Creek bottom at Interstate Highway 5, westeren Stanislaus county.
Comment
CAS-BOT-BC92075
Platystemon californicus
John Thomas Howell
1930-4-6
4672
Santa Clara
San Antonio Valley.
Comment
JEPS58883
Plectritis macrocera
John Thomas Howell
1946-4-13
21599
Marin
Summit meadow to Rock Spring, Mount Tamalpais Rock Spring; Mount Tamalpais
Comment
CAS-BOT-BC244403
Poa annua
John Thomas Howell
1961-9-22
36719
Butte
Bank of Feather River, Oroville
53
Comment
CAS-BOT-BC255628
Poa annua
John Thomas Howell; Gordon H. True
1967-7-4
43000
Tulare
3.4 miles S of Troy Meadow, Kern Plateau
2286
Comment
CAS-BOT-BC255052
Poa compressa
John Thomas Howell; Gordon H. True
1968-6-9
44516
Placer
Alta
1066
Comment
CAS-BOT-BC254629
Poa cusickii subsp. epilis
John Thomas Howell
1942-7-29
17414
Tulare
Little Five Lakes Basin
Comment
CAS-BOT-BC254636
Poa cusickii subsp. epilis
John Thomas Howell
1949-8-3
25981
Tulare
Sky Blue Lake
3505
Comment
CAS-BOT-BC255156
Poa cusickii subsp. epilis
John Thomas Howell
1958-8-16
34528
Madera
E Fork of Granite Creek
2621
Comment
CAS-BOT-BC254246
Poa glauca subsp. rupicola
John Thomas Howell
1947-8-11
23977
Inyo
Inconsolable Range
3810
Comment
CAS-BOT-BC255820
Poa keckii
John Thomas Howell
1942-7-31
17488
Tulare
Mt. Kaweah
Comment
UC1026388
Poa kelloggii
John Thomas Howell
1954-4-24
29151
Humboldt
Bull Creek Flat
Comment
CAS-BOT-BC246769
Poa leibergii
John Thomas Howell
1946-7-26
22734
Inyo
Mono Mesa
3657
Comment
GH360756
Poa leibergii
J. T. Howell
1942-8-2
17587
Unknown
Little Five Lakes Basin
Comment
CAS-BOT-BC246826
Poa leptocoma
John Thomas Howell
1943-7-17
18456
Nevada
Signal Hill, West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC255899
Poa nervosa
John Thomas Howell
1943-7-18
18550
Nevada
Castle Peak
Comment
RSA44071
Poa nervosa
J. T. Howell
1947-8-15
24135
Inyo
Fourth Lake, 10,800 ft., Big Pines Lakes.
3293
Comment
CAS-BOT-BC247273
Poa palustris
John Thomas Howell
1961-9-23
36852
Plumas
Indian Valley
1082
Comment
CAS-BOT-BC247329
Poa pratensis
John Thomas Howell
1944-6-4
19545
Marin
Inverness Ridge west of Inverness
Comment
CAS-BOT-BC255202
Poa pratensis
John Thomas Howell
1969-8-26
45930
Tulare
Monarch Creek Trail near Mineral King, Sierra Nevada
2895
Comment
CAS-BOT-BC256046
Poa pratensis
John Thomas Howell
1955-6-12
30330 j
Trinity
Weaverville
Comment
SD112905
Poa secunda
Darley F. Howe
1947-6-1
1754
Unknown
Greenhorn Mts.
1981
Comment
SEINET12894114
Poa secunda
J. T. Howell
1934-1
12342
Unknown
Comment
CAS-BOT-BC247062
Poa secunda subsp. juncifolia
John Thomas Howell; Gordon H. True
1970-7-14
5493
Sierra
West side of Dog Valley ca. 5 miles northwest of Verdi (Nevada)
1889
Comment
CAS-BOT-BC236034
Poa secunda subsp. secunda
John Thomas Howell; Gordon H. True
1967-5-29
42271
Inyo
1/3 mile E of head of Nine Mile Canyon
1828
Comment
CAS-BOT-BC243240
Poa secunda subsp. secunda
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-29
53409
Siskiyou
Fort Jones
853
Comment
CAS-BOT-BC244501
Poa secunda subsp. secunda
John Thomas Howell
1964-4-26
40437
Mariposa
Just SE of Mariposa, on road to Morman Bar
594
Comment
UCD91643
Poa secunda subsp. secunda
John Thomas Howell
1942-7-29
17413
Tulare
Little Five Lakes Basin.
Comment
UCD91653
Poa secunda subsp. secunda
John Thomas Howell; Gordon H. True, Margaret Williams
1973-5-12
49196
Lassen
Sierra Nevada. Elysian Valley northwest of Janesville.
1325
Comment
CAS-BOT-BC244235
Poa unilateralis
John Thomas Howell
1956-5-6
31350
San Francisco
Sierra and Missouri Streets, San Francisco
Comment
UC703167
Poa wheeleri
John Thomas Howell
1941-7-24
16418
Madera
near Garnet Lake
2956
Comment
UCD91591
Poa wheeleri
John Thomas Howell
1944-8-3
19876
Mono
Sonora Pass.
2926
Comment
GH400773
Pogogyne abramsii
J. T. Howell
1931-6-4
6636
Unknown
11 miles ne. of San Diego
Comment
SD113386
Polycarpon tetraphyllum
Darley F. Howe
1956-5-19
2539
Los Angeles
Lawn at University of California Los Angeles.
Comment
CAS-BOT-BC413923
Polygonum aviculare subsp. aviculare
John Thomas Howell
1962-6-16
37564
Butte
Magalia
731
Comment
CAS-BOT-BC413963
Polygonum aviculare subsp. aviculare
John Thomas Howell
1924-10-11
678
Alameda
Euclid Avenue, Berkeley
Comment
CAS-BOT-BC414142
Polygonum aviculare subsp. aviculare
John Thomas Howell; R. C. Barneby
1954-5-8
29200
Tulare
Terra Bella
152
Comment
CAS-BOT-BC414312
Polygonum aviculare subsp. neglectum
J. T. Howell
1957-6-16
32667
San Francisco
San Francisco. Third and Davidson streets
Comment
CAS-BOT-BC414334
Polygonum aviculare subsp. rurivagum
John Thomas Howell
1963-6-22
39579
Monterey
Priest Valley
685
Comment
CAS-BOT-BC414554
Polygonum douglasii
John Thomas Howell
1951-8-19
28193
Plumas
Greenville
1097
Comment
RSA22223
Polygonum douglasii subsp. johnstonii
J. T. Howell
1938-8-7
14322
Mono
Crooked Creek.
2058
Comment Read comments Jul 2 2012
UC473577
Polygonum lapathifolium
John Thomas Howell
1931-9-29
8125
San Francisco
Mountain Lake San Francisco, Presidio (along highwater mark)
Comment
CAS-BOT-BC109220
Polygonum paronychia
John Thomas Howell
1957-5-26
32450
San Francisco
San Francisco. North base of Lone Mountain.
Comment
SDSU9658
Polygonum punctatum var. ellipticum
D. F. Howe
1961-7-27
3068
Marin
Bluff above ocean, 0.6 miles south of Stinson Beach.
91
Comment
POM203797
Polygonum sawatchense
J. T. Howell
1934-7-9
12528
Lassen
Harvey Valley.
Comment
RSA304477
Polygonum sawatchense
J. T. Howell
1942-8-8
17832
Tulare
Farewell Gap Trail near Mineral King.
Comment
SDSU9667
Polygonum shastense
D. F. Howe
1962-8-6
3409
Siskiyou
Mt. Shasta, Shasta National Forest.
2438
Comment
UC42892
Polypodium
Marshall A. Howe
1892-3-26
Alameda
Wildcat Canyon Berkeley
Comment
UC750597
Polypogon maritimus
John Thomas Howell
1945-6-22
21218
Lake
Sulphur Banks
Comment
CAS-BOT-BC237461
Polypogon viridis
John Thomas Howell
1959-9-26
35069
Plumas
Near Soda Spring, Feather River Canyon
682
Comment
CAS-BOT-BC237523
Polypogon viridis
J. T. Howell
1963-8-6
40035
Monterey
Santa Lucia Mountains. Abbott Lakes, Arroyo Seco Forest Service Campground
Comment
SD112684
Polypogon viridis
Darley F. Howe
1938-7-15
698
San Diego
Rocky stream bed, Pine Hills region.
Comment
CAS-BOT-BC237558
Polypogon viridis
John Thomas Howell
1957-6-11
32596
San Francisco
San Francisco. E side of Lone Mountain
Comment
RSA11
Polystichum imbricans subsp. curtum
J. T. Howell
1927-8-2
571
Riverside
Road to Hemet, Mt. San Jacinto.
1372
Comment
CAS-BOT-BC72359
Polystichum imbricans subsp. imbricans
John Thomas Howell
1959-9-26
35041
Plumas
Slaty Rocks near Keddie
1005
Comment
CAS-BOT-BC102713
Populus tremuloides
John Thomas Howell
1944-8-14
s.n.
Tuolumne
Glen Aulin
Comment
CAS-BOT-BC102953
Populus trichocarpa
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-29
53413
Siskiyou
Oro Fino
853
Comment
CAS-BOT-BC102968
Populus trichocarpa
John Thomas Howell
1960-8-22
36356
Shasta
Manzanita Lake
1783
Comment
CAS-BOT-BC105605
Populus trichocarpa
John Thomas Howell
1960-8-20
36236
Tehama
Morgan - near Lassen Volcanic National Park
1463
Comment
CAS-BOT-BC233726
Portulaca
John Thomas Howell
1961-9-24
36916
Plumas
Feather River bed SW of Beckwourth, Sierra Nevada
1487
Comment
CAS-BOT-BC267192
Potamogeton foliosus
John Thomas Howell
1946-8-23
22893
Marin
Pierce Point Road, Point Reyes Peninsula
Comment
SD112173
Potamogeton foliosus subsp. foliosus
Darley F. Howe
1957-6-23
2578
San Diego
Pine Valley Creek
Comment
CAS-BOT-BC453706
Potamogeton illinoensis
John Thomas Howell
1963-8-6
40024
Monterey
Santa Lucia Mountains. Abbott Lakes, Arroyo Seco Forest Service Campground
Comment
CAS-BOT-BC141989
Potentilla bruceae
John Thomas Howell; Gordon H. True
1970-8-12
6254
Nevada
Webster Flat ca. 4 miles northeast of Cisco Grove on Rattlesnake Creek
2072
Comment
CAS-BOT-BC142001
Potentilla bruceae
John Thomas Howell
1949-8-5
26034
Tulare
Army Pass
3505
Comment
UC545660
Potentilla gracilis
John Thomas Howell
1934-7-1
12306
Modoc
Duncan Horse Camp
Comment
CAS-BOT-BC541052
Potentilla gracilis var. fastigiata
John Thomas Howell; Gordon H. True
1967-7-5
43075
Tulare
Kern Plateau, 6.4 miles north of Chimney Meadow
2225
Comment
CAS-BOT-BC158548
Potentilla pseudosericea
John Thomas Howell
1946-7-27
22799
Fresno
Northwest of Mono Pass
3657
Comment
CAS-BOT-BC158573
Potentilla pseudosericea
John Thomas Howell
1944-8-10
20267
Mono
Glacier Canyon, Mt. Dana
Comment
RSA44273
Potentilla pseudosericea
J. T. Howell
1947-8-11
24023
Inyo
South end of Coyote Ridge.
3659
Comment
SD88463
Prosartes smithii
Darley F. Howe
1972-7-2
Del Norte
5 miles south of Sanger Lake.
1646
Comment
SD149134
Prunella vulgaris var. lanceolata
John Thomas Howell, Gardon H. True and Margaret Williams
1973-6-28
49443
Lassen
Elysian Valley, west of Janesville.
1326
Comment
SD42635
Prunus emarginata
Darley F. Howe
1947-6-25
San Bernardino
Road Green Valley to hanna Flats
Comment
UCD113217
Prunus emarginata
John Thomas Howell
1960-8-18
36044
Tehama
Bluff Falls.
1981
Comment
SDSU9167
Prunus fasciculata var. punctata
D. F. Howe
1960-4-10
2848
San Luis Obispo
East of san dunes and just south of Morro Bay.
Comment
SD45614
Prunus ilicifolia subsp. lyonii
D. F. Howe
1953-5-2
Los Angeles
Wain Canyon, Catalina Island
Comment
CAS-BOT-BC356974
Pseudognaphalium luteoalbum
John Thomas Howell
1976-10-29
52275
El Dorado
Bottom of Folsom Lake at Brown's Ravine boat landing
121
Comment
CAS-BOT-BC361629
Pseudognaphalium stramineum
John Thomas Howell; Gordon H. True
1967-9-18
43773
Tulare
Recreation area, north end of Lamont Meadow, Kern Plateau
1706
Comment
CAS-BOT-BC361686
Psilocarphus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54207
Plumas
2.5 miles northeast of Quincy Junction on road to Mt. Hough
1280
Comment
SD113160
Psilocarphus brevissimus
Darley F. Howe
1935-4-14
177
San Diego
Telegraph Canyon
Comment
CAS-BOT-BC362001
Psilocarphus tenellus
John Thomas Howell
1962-6-18
37761
Plumas
Sierra Valley near Beckwourth
1487
Comment
UC526155
Psoralidium lanceolatum
John Thomas Howell
1934-6-10
11860
Lassen
Doyle
Comment
JEPS41732
Psorothamnus emoryi
John Thomas Howell
1927-11-25
3235
San Diego
ne end Borrego Valley ne end Borrego Valley (sandy wash)
Comment
UC42931
Pteridium aquilinum var. pubescens
Marshall A. Howe
1894-8-8
Siskiyou
Shasta Soda Springs
Comment
CAS-BOT-BC460494
Pterospora andromedea
John Thomas Howell
1940-7-28
15651
Fresno
Bubbs Creek, near Sphinx Creek
Comment
SEINET196515
Ptilagrostis kingii
J. T. Howell
1949-7-21
25566
Tulare
Rock Creek Sierra Nevada
3200
Comment
UCD93428
Puccinellia nuttalliana
John Thomas Howell
1964-10-24
40995
Mono
Mono Lake near Lee Vining.
2072
Comment
RSA43324
Purshia tridentata var. glandulosa
J. T. Howell
1948-4-25
24246
Kern
West side of Walker Pass.
Comment
SD81029
Pyrrocoma apargioides
Darley F. Howe
1971-8-24
Inyo
Trail to Lamarch Lake above North Lake, west of Bishop.
3050
Comment
CAS-BOT-BC362281
Pyrrocoma lanceolata var. lanceolata
John Thomas Howell
1938-8-8
14393
Mono
Long Valley
Comment
RSA93970
Pyrrocoma racemosa
J. T. Howell
1933-9-17
11688
Solano
Montezuma Hills
Comment
CAS-BOT-BC362305
Pyrrocoma racemosa var. paniculata
John Thomas Howell
1962-7-9
38347
Kern
Isabella
762
Comment
CAS-BOT-BC104202
Quercus X morehus
John Thomas Howell
1939-10-29
s.n.
Marin
San Geronimo Ridge
Comment
CAS-BOT-BC104419
Quercus X subconvexa
John Thomas Howell; John Tucker
1947-8-31
24175
Marin
Ridgecrest Road N of Alpine Lake
Comment
SD129862
Quercus agrifolia var. agrifolia
Melanie Howe
1988-3-21
6
San Diego
Mission Trails Regional Park, Padre Dam
Comment
CAS-BOT-BC62665
Quercus chrysolepis
John Thomas Howell
1960-6-8
35446
Fresno
2 mi. westerly from Sequoia Lake
1524
Comment
CAS-BOT-BC62717
Quercus chrysolepis
John Thomas Howell
1965-4-26
41159
Madera
3 miles south of Oakhurst
914
Comment
CAS-BOT-BC93976
Quercus durata
John Thomas Howell; R. C. Barneby
1954-5-13
29535
Nevada
Grass Valley
731
Comment
CAS-BOT-BC93983
Quercus durata
John Thomas Howell
1951-6-26
27532
Plumas
near Rich Bar
792
Comment
SD113990
Quercus engelmannii
Darley F. Howe
1945-11-22
1368
San Diego
Lyons Valley
Comment
A344921
Quercus garryana
J. T. Howell
1933-8-13
11494
Unknown
2 miles from Smith Creek on road to San Jose
Comment
UCD46166
Quercus garryana var. semota
John Thomas Howell
1954-6-4
29917
Tuolumne
Between Twain Harte and Stanislaus River bridge, Tuolumne County.
Comment
CAS-BOT-BC104747
Quercus wislizeni
John Thomas Howell; Gordon H. True
1969-5-13
45639
Kern
Sierra Nevada. Spanish Needle Creek road t o Lamont Meadow
1280
Comment
CAS-BOT-BC104881
Quercus wislizeni
John Thomas Howell
1927-8-22
3033
Marin
on S side of Mt. Tamalpais above Mill Valley
152
Comment
CAS-BOT-BC362529
Rafinesquia californica
John Thomas Howell
1927-6-24
2581
San Bernardino
Aliso Canon [Canyon], southern Puente Hills near the Santa Ana Canon [Canyon]
274
Comment
CAS-BOT-BC362604
Rafinesquia neomexicana
John Thomas Howell
1930-5-13
4923
Kern
Red Rock Canyon
Comment
CAS-BOT-BC362781
Raillardella argentea
John Thomas Howell
1949-8-8
26155
Tulare
Above Sky Blue Lake
3657
Comment
UC703158
Raillardella argentea
John Thomas Howell
1942-8-7
17785
Tulare
Lost Canyon
3048
Comment
CAS-BOT-BC362880
Raillardella scaposa
John Thomas Howell
1944-8-12
20339
Tuolumne
Between Tioga Pass and Gaylor Lakes
Comment
CAS-BOT-BC379005
Ranunculus aquatilis var. diffusus
John Thomas Howell
1946-5-4
21744
Marin
Dillons Beach
Comment
CAS-BOT-BC378613
Ranunculus californicus var. californicus
John Thomas Howell
1931-4-10
6205
Santa Barbara
Santa Cruz Island, Valle del Medio
Comment
CAS-BOT-BC378918
Ranunculus californicus var. californicus
John Thomas Howell
1925-3-23
877
Alameda
Arroyo Mocho at NE base of Cedar Mt.
Comment
RSA305
Ranunculus cymbalaria var. saximontanus
J. T. Howell
1927-7-19
3769
Orange
Santa Ana River bottom, Rancho Santa Ana.
152
Comment
SDSU10115
Ranunculus muricatus
D. F. Howe
1948-5-21
1909
Placer
457
Comment
SD113143
Raphanus sativus
Darley F. Howe
1944-7-21
1242
San Diego
Cultivated ground 1.0 mile north of Otay.
Comment
CAS-BOT-BC74285
Raphanus sativus
John Thomas Howell
1966-4-18
41517
Marin
Tiburon. Just north of John Thomas Howell Botanical Garden.
Comment
RSA512832
Rhamnus tomentella subsp. cuspidata
J. T. Howell, G. H. True
1969-9-29
46323
Tulare
Fay Creek SE of True Meadow, Kern Plateau
2073
Comment
RSA518948
Rhamnus tomentella subsp. cuspidata
J. T. Howell, G. H. True
1971-6-14
47682
Kern
3 mi. east of Glennville on Greenhorn Mountain rd.
1220
Comment
SD51019
Rhus trilobata var. anisophylla
Darley F. Howe
1960-4-28
2925
San Bernardino
Kingston Range.
1370
Comment
SD112956
Rhus trilobata var. pilosissima
Darley F. Howe
1915-1
4
Los Angeles
Claremont
Comment
NY51372
Rhynchospora californica
J. T. Howell
1936-7-26
12679
Sonoma
Pitkin Marsh, 5 mi N of Sebastopol.
Comment
CAS-BOT-BC111899
Rhynchospora capitellata
John Thomas Howell
1945-7-18
21318
Sonoma
Pitkin Marsh
Comment
POM303625
Rhynchospora globularis var. recognita
J. T. Howell
1936-7-26
12678
Sonoma
Pitkin Marsh, 5 miles north of Sebastopol.
Comment
CAS-BOT-BC111927
Rhynchospora recognita
John Thomas Howell
1945-8-14
21393
Sonoma
Perry Marsh
Comment
CAS-BOT-BC92403
Ribes aureum var. aureum
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-29
53407
Siskiyou
Fort Jones.
853
Comment
A363954
Ribes binominatum
J. T. Howell
1937-7-25
13458
Unknown
Caribou Basin, Salmon-Trinity Alps
1981
Comment
A363955
Ribes binominatum
J. T. Howell
1943-8-7
19172
Unknown
Plaskett Meadow
1828
Comment
UC1042526
Ribes malvaceum
John Thomas Howell
1954-11-3
30138
Monterey
Arroyo Seco River Canyon Santa Lucia Mts.
Comment
RSA0021668
Ribes malvaceum
J. T. Howell
1931-3-29
6027
San Benito
Hernandez.
Comment
SD45588
Ribes nevadense
D. F. Howe
1953-5-31
2294
Los Angeles
Mt. Wilson
1493
Comment
CAS-BOT-BC186182
Ribes roezlii var. roezlii
John Thomas Howell
1931-2-23
5747
Mariposa
3 miles from Coulterville on road to Bower's Cave
Comment
CAS-BOT-BC199010
Ribes roezlii var. roezlii
John Thomas Howell
1960-3-26
35200
Kern
Near Delonegha Hot Springs, Sierra Nevada
Comment
SD88452
Ribes sanguineum var. glutinosum
Darley F. Howe
1972-5-4
Monterey
6.0 miles north of Lucia on Highway 1.
60
Comment
A380963
Ribes velutinum
J. T. Howell
1934-6-12
12011
Unknown
Between Davis Creek and Plum Valley
Comment
CAS-BOT-BC168749
Ribes victoris
John Thomas Howell
1943-3-7
17885
Marin
Hills northeast of San Rafael
Comment
CAS-BOT-BC362933
Rigiopappus leptocladus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-29
53423
Siskiyou
East side of Scott Valley, 10 miles south of Fort Jones on road to Callahan
853
Comment
CAS-BOT-BC362953
Rigiopappus leptocladus
John Thomas Howell
1962-6-16
37594
Butte
Feather River West Branch sw. of Nelson Bar
304
Comment
CAS-BOT-BC362911
Rigiopappus leptocladus
John Thomas Howell
1969-5-5
45575
Marin
North of Ring Hill, Tiburon Peninsula
Comment
SD113923
Romneya trichocalyx
Darley F. Howe
1936-5-17
352
San Diego
Otay Valley near Otay
Comment
SD129868
Romneya trichocalyx
Melanie Howe, L. Kelly
1988-7-22
34
San Diego
Near entrance to Mission Trails Regional Park, Padre Dam
Comment
SD50941
Rorippa curvipes var. curvipes
Darley F. Howe
1928-7-28
Mono
1.0 mile north of Crestview Camp.
Comment
CAS-BOT-BC74750
Rorippa curvisiliqua
John Thomas Howell; Gordon H. True
1966-7-11
41734
Tulare
Sierra Nevada. Horse Meadow, Kern Plateau.
2255
Comment
CAS-BOT-BC74486
Rorippa curvisiliqua
John Thomas Howell
1976-10-29
52280
El Dorado
Sierra Nevada. Folsom Lake at Brown's Ravine boat landing.
121
Comment
CAS-BOT-BC74543
Rorippa curvisiliqua
John Thomas Howell
1946-6-16
22090
Marin
Point Reyes Station.
Comment
SDSU1267
Rorippa curvisiliqua
D. F. Howe
1963-5-19
3721
Monterey
3 miles north of San Luis Obispo-Monterey Co. line on #101.
183
Comment
CAS-BOT-BC75024
Rorippa palustris var. hispida
John Thomas Howell
1961-9-23
36849
Plumas
Sierra Nevada. Indian Valley.
1082
Comment
RSA126240
Rosa californica
J. T. Howell
1939-9-3
15349
Marin
San Antonio Creek
Comment
A345979
Rosa gymnocarpa
J. T. Howell
1939-8-4
15036
Unknown
Between Elk Mt. and Marble Rim, Marble Mts.
Comment
CAS-BOT-BC148107
Rosa gymnocarpa
John Thomas Howell
1925-9-27
1485
Contra Costa
San Leandro Canyon, Oakland Hills
Comment
CAS-BOT-BC148164
Rosa gymnocarpa
John Thomas Howell
1976-7-15
51866
Plumas
Snake Lake, about 4 miles northwest of Quincy - Sierra Nevada
1219
Comment
CAS-BOT-BC146984
Rosa woodsii subsp. ultramontana
John Thomas Howell
1928-6-20
4070
Inyo
Jail [Canon] Canyon near the Burro Mine, Panamint Mts.
1066
Comment
CAS-BOT-BC149751
Rosa woodsii subsp. ultramontana
John Thomas Howell
1950-7-23
27247
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC148400
Rubus leucodermis
John Thomas Howell; Alice Eastwood
1938-7-7
6128
Mendocino
Cummins P.O.
Comment
UC1177241
Rubus ulmifolius var. inermis
John Thomas Howell
1943-9-5
19313
Marin
between Tamalpais Valley and Tamalpais High School; between Tamalpais Valley and Tamalpais H.S.
Comment
CAS-BOT-BC156931
Rubus ursinus
John Thomas Howell
1957-4-30
32139
San Benito
The Pinnacles
Comment
CAS-BOT-BC157110
Rubus ursinus
John Thomas Howell
1938-6-4
13888
San Mateo
Burlingame
Comment
RSA220071
Rubus ursinus
J. T. Howell
1957-5-28
32483
San Francisco
West side of Lone Mountain.
Comment
UC1177247
Rubus ursinus
John Thomas Howell
1943-4-11
17894
Marin
Black Canyon San Rafael Hills, Black Canyon
Comment
CAS-BOT-BC433281
Rumex crispus
John Thomas Howell
1973-7-25
49987
Merced
3 miles south of Gustine on Hunt Road to Ingomar
30
Comment
CAS-BOT-BC433529
Rumex fueginus
John Thomas Howell
1926-11-7
2241
San Francisco
Lake Merced, San Francisco.
Comment
CAS-BOT-BC433667
Rumex obtusifolius
John Thomas Howell
1940-9-15
s.n.
Marin
Stinson Beach
Comment
CAS-BOT-BC433751
Rumex pulcher
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52881
Calaveras
Foothills near Wallace
66
Comment
CAS-BOT-BC433781
Rumex pulcher
John Thomas Howell
1959-9-20
34622
Butte
Eastern outskirts of Oroville
60
Comment
CAS-BOT-BC433953
Rumex salicifolius
John Thomas Howell
1963-5-18
39332
Monterey
2.5 miles south of Aromas
60
Comment
CAS-BOT-BC433933
Rumex salicifolius
John Thomas Howell
1947-7-6
23323
Marin
Laurel Dell, Mt. Tamalpais
Comment
UC1176808
Rumex salicifolius var. crassus
John Thomas Howell
1946-7-4
22173
Marin
Dillons Beach
Comment
SDSU9730
Rumex salicifolius var. triangulivalvis
D. F. Howe
1962-8-18
3466
Fresno
15.6 miles east of Shaver Lake on #168 Sierra National Forest.
2225
Comment
CAS-BOT-BC434108
Rumex transitorius
John Thomas Howell
1939-6-25
14793
Marin
Summit Avenue, Mill Valley
Comment
CAS-BOT-BC434307
Rumex triangulivalvis
John Thomas Howell
1960-7-22
35891
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC267078
Sagittaria
John Thomas Howell
1954-9-6
30093
Calaveras
3 miles SE of Angels Camp
Comment
CAS-BOT-BC132686
Salix
John Thomas Howell; Gordon H. True
1969-5-14
45746
Tulare
Cherry Hill Road about 1.5 mile east of Kern River Canyon road, Brush Creek Canyon, Kern Plateau
1310
Comment
CAS-BOT-BC132876
Salix arctica
John Thomas Howell
1949-7-20
25537
Tulare
Rock Creek
3444
Comment
CAS-BOT-BC129635
Salix bonplandiana
John Thomas Howell
1962-5-22
37317
Tulare
South Creek near Dunwood - Sierra Nevada
1188
Comment
CAS-BOT-BC102821
Salix boothii
John Thomas Howell
1960-8-23
36449
Shasta
Lassen Loop above Little Hot Springs Valley
2407
Comment
RSA201371
Salix boothii
J. T. Howell
1960-8-21
36319
Shasta
Kings Creek Meadow.
2210
Comment
A382493
Salix eastwoodiae
J. T. Howell
1940-8-4
15961
Unknown
East Lake
2926
Comment
CAS-BOT-BC103508
Salix eastwoodiae
John Thomas Howell
1948-7-24
24967
Fresno
Bullfrog Lake
3240
Comment
RSA505991
Salix eastwoodiae
J. T. Howell
1966-6-21
41578
Inyo
Onion Valley.
2805
Comment
SD114305
Salix exigua var. hindsiana
Darley F. Howe
1947-4-13
1599
San Diego
One mile west of Bonita, in stream bed of Sweetwater Valley.
Comment
RSA137
Salix gooddingii
J. T. Howell
1927-7-24
394
Orange
Santa Ana River bottom near Rancho Santa Ana.
152
Comment
CAS-BOT-BC106795
Salix hindsiana
John Thomas Howell
1929-4-7
4125
Merced
Merced River bottom at the Hopeton Bridge
60
Comment
CAS-BOT-BC106801
Salix hindsiana
John Thomas Howell
1926-6-13
2029
Stanislaus
Knight's Ferry
76
Comment
CAS-BOT-BC125306
Salix lasiandra var. lasiandra
John Thomas Howell
1960-7-18
35593
Plumas
Drakesbad
1828
Comment
CAS-BOT-BC125415
Salix lasiandra var. lasiandra
John Thomas Howell
1960-8-22
36374
Shasta
Anklin Meadows
1889
Comment
CAS-BOT-BC107374
Salix lasiolepis var. lasiolepis
John Thomas Howell
1969-4-22
45535
Amador
Volcano
609
Comment
CAS-BOT-BC124342
Salix lasiolepis var. lasiolepis
John Thomas Howell
1980-9-8
53898
Marin
Between Alpine and Bon Tempe lakes
Comment
CAS-BOT-BC128251
Salix lasiolepis var. lasiolepis
John Thomas Howell
1958-5-22
33192
Tulare
Johnsondale
1423
Comment
CAS-BOT-BC128260
Salix lasiolepis var. lasiolepis
John Thomas Howell; Gordon H. True
1967-8-9
43685
Tulare
Pinyon woodland about 4 miles north of Chimney Meadow - Kern Plateau, Sierra Nevada
2103
Comment
CAS-BOT-BC128277
Salix lasiolepis var. lasiolepis
John Thomas Howell
1955-6-12
30323
Trinity
Weaverville
609
Comment
CAS-BOT-BC124794
Salix lemmonii
John Thomas Howell
1961-6-21
36607
Plumas
Greenville
1097
Comment
SDSU9452
Salix lemmonii
D. F. Howe
1948-8-9
1882
San Bernardino
Dollar Lake, San Bernardino Mtns.
2896
Comment
UC846412
Salix lemmonii
John Thomas Howell
1938-8-10
14486
Mono
Minaret Summit
Comment
RSA503330
Salix lucida subsp. lasiandra
J. T. Howell
1963-8-20
40192
Inyo
Whitney Portal.
2439
Comment
CAS-BOT-BC129482
Salix melanopsis
John Thomas Howell
1954-6-4
29914
Stanislaus
Knights Ferry
Comment
CAS-BOT-BC125762
Salix orestera
John Thomas Howell
1941-8-6
16782 A
Madera
Headwaters of Shadow Creek se. of Mt. Ritter
Comment
CAS-BOT-BC125800
Salix orestera
John Thomas Howell
1944-8-16
20640
Mono
Mono Pass
Comment
CAS-BOT-BC125814
Salix orestera
John Thomas Howell
1944-8-16
20640
Mono
Mono Pass
Comment
CAS-BOT-BC129372
Salix orestera
John Thomas Howell
1947-8-8
23926
Inyo
Second to Third Lake, Big Pine Lakes
3048
Comment
CAS-BOT-BC129097
Salix scouleriana
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-26
54362
Plumas
0.75 miles northeast of Bucks Summit on road to Quincy - Sierra Nevada
1600
Comment
SDSU9441
Salix sitchensis
D. F. Howe
1972-2-16
4799
Monterey
4 miles south fo Point Sur.
Comment
CAS-BOT-BC180785
Salsola paulsenii
John Thomas Howell; Gordon H. True
1967-9-17
43739
Kern
Ridgecrest
Comment
CAS-BOT-BC175737
Salsola tragus
John Thomas Howell; Gordon H. True
1967-9-21
43992
Tulare
About 4 1/2 miles east-northeast of Pixley. Along west fence & Road 160
83
Comment
RSA269
Salsola tragus
J. T. Howell
1927-6-6
44
Orange
Santa Ana River bottom, Rancho Santa Ana
152
Comment
CAS-BOT-BC180706
Salsola tragus
John Thomas Howell
1952-10-26
28876
Los Angeles
Vacant lot, Palmdale
Comment
SD114226
Saltugilia splendens
Darley F. Howe
1941-6-9
1105
Riverside
Strawberry Creek, San Jacinto Mts.
Comment
CAS-BOT-BC238676
Sambucus nigra subsp. caerulea
John Thomas Howell
1950-7-26
27363
Inyo
Summit Creek, east of Olancha Pass
2773
Comment
CAS-BOT-BC238886
Sambucus nigra subsp. caerulea
John Thomas Howell
1939-8-5
15072
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
SD112134
Samolus parviflorus
Darley F. Howe
1939-7-9
934
San Diego
Stream bed near Barrett.
Comment
RSA126183
Sanguisorba minor
J. T. Howell
1949-6-7
25341
Marin
Aurora School, NW Marin.
Comment
POM194215
Sanicula laciniata
J. T. Howell
1927-3-20
2290
Marin
Cote Madera Ridge
305
Comment
GH363164
Sarcodes sanguinea
T. J. Howell
1889-6-16
192
Unknown
Siskiyou Mts.
Comment
POM304565
Saxifraga nidifica
John T. Howell
1942-7-25
17173
Tulare
Eagle Lake trail near Mineral King.
Comment
CAS-BOT-BC283111
Schedonorus arundinaceus
John Thomas Howell
1943-7-26
18862
Nevada
West side of Donner Pass near Norden
2133
Comment
UCD65649
Schedonorus arundinaceus
John Thomas Howell; Gordon H. True and Margaret Williams
1973-6-28
49474
Lassen
Sierra Nevada. Elysian Valley west of Janesville.
1325
Comment
CAS-BOT-BC283629
Schedonorus pratensis
John Thomas Howell
1951-8-20
28213
Plumas
Genesee
1127
Comment
CAS-BOT-BC283636
Schedonorus pratensis
John Thomas Howell
1957-6-12
32615
San Francisco
Lone Mountain
Comment
SD112699
Schismus barbatus
Darley F. Howe
1960-3-2
2827
San Diego
Mt. Springs Grade, 2.3 miles above 2000 ft. marker.
Comment
SEINET10597124
Schismus barbatus
John Thomas Howell
1948-4-26
Howell 24272
Kern
Sandy roadside, Tehachapi Pass, road East of Edison, Ca.
Comment
CAS-BOT-BC111243
Schoenoplectus californicus
John Thomas Howell
1939-10-1
15368
Marin
Phoenix Lake
Comment
CAS-BOT-BC111247
Schoenoplectus californicus
John Thomas Howell
1939-10-1
15368
Marin
Phoenix Lake
Comment
CAS-BOT-BC111743
Schoenoplectus pungens var. badius
John Thomas Howell
1956-8-26
31800
San Francisco
Edge of Pine Lake
Comment
CAS-BOT-BC111218
Scirpus
John Thomas Howell
1977-8-2
52484
Alpine
Mosquito Lake on Ebbetts Pass Road, Canadian Zone.
2438
Comment
CAS-BOT-BC35588
Scirpus congdonii
John Thomas Howell
1962-6-17
37650
Plumas
Butterfly Valley
1036
Comment
CAS-BOT-BC111032
Scirpus microcarpus
John Thomas Howell
1927-7-10
2761
San Bernardino
Wet meadow on Mill Creek Road near Municipal Camp of Riverside
2225
Comment
CAS-BOT-BC111129
Scirpus microcarpus
John Thomas Howell; Gordon H. True
1970-6-25
46778
Tulare
East branch of Salmon Creek, Big Meadow to Sirretta Meadows.
2590
Comment
CAS-BOT-BC240006
Scribneria bolanderi
John Thomas Howell
1945-4-29
20791
Marin
West of Camp Handy, Mt. Tamalpais
Comment
CAS-BOT-BC240035
Scribneria bolanderi
John Thomas Howell
1948-4-18
24209
Sonoma
Hills east of Agua Caliente
Comment
CAS-BOT-BC238463
Scrophularia
John Thomas Howell
1977-8-11
52684
Plumas
Canyon of Little Last Chance Creek between Chilcoot and Frenchmans Reservoir
1676
Comment
CAS-BOT-BC179226
Scutellaria nana
John Thomas Howell
1934-6-30
12257
Modoc
Duncan Horse Camp.
1355
Comment
CAS-BOT-BC61495
Sedum album
John Thomas Howell
1957-8-6
s.n.
San Francisco
Strybing Arboretum, Golden Gate Park
Comment
CAS-BOT-BC61498
Sedum lanceolatum
John Thomas Howell
1977-8-3
52558
Alpine
Just north of Ebbetts Pass
2682
Comment
SD41243
Sedum niveum
Darley F. Howe
1946-8-3
San Bernardino
Sugarloaf trail from Rathbone Creek.
2895
Comment
CAS-BOT-BC64193
Sedum obtusatum
John Thomas Howell
1958-8-12
34352
Madera
Near Isberg Lake.
2987
Comment
SD56781
Sedum radiatum subsp. radiatum
Darley F. Howe
1963-7-13
Fresno
Stevenson Creek, Sierra National Forest.
1220
Comment
CAS-BOT-BC418479
Sedum sediforme
J. T. Howell; T. C. Fuller; G. D. Barbe
1980-7-14
2837
Tulare
Abandoned building site, mouth of Packsaddle Canyon at fish hatchery dam on Kern River, 1.6 km north of Roads End.
1100
Comment
SD69974
Sedum stenopetalum subsp. radiatum
Darley F. Howe
1968-5-23
Mendocino
Cliff, 3.0 miles west of Mendocino-Lake County line on road from Hopland to Clear Lake.
Comment
CAS-BOT-BC61963
Selaginella
John Thomas Howell
1927-7-24
2834
Orange
side of Calymine Canyon, n. Santa Ana Mts.
152
Comment
RSA16
Selaginella bigelovii
John Thomas Howell
1927-7-28
506
Orange
Nolina Canyon, Rancho Santa Ana
152
Comment
CAS-BOT-BC69749
Selaginella wallacei
John Thomas Howell
1926-9-26
2193
Marin
Near head of Muir Woods.
Comment
CAS-BOT-BC363308
Senecio aronicoides
John Thomas Howell
1943-8-3
18966
Glenn
Plaskett Meadows
1828
Comment
SD88427
Senecio californicus var. californicus
Darley F. Howe
1972-4-21
Santa Barbara
near entrance to Vandenburg Air Base on Floradane Avenue north of Lompoc
Comment
CAS-BOT-BC329138
Senecio flaccidus var. douglasii
John Thomas Howell
1973-10-31
50275
Tulare
Near Potwisha, Middle Fork of Kaweah River
609
Comment
CAS-BOT-BC329141
Senecio flaccidus var. douglasii
John Thomas Howell; Gordon H. True
1967-8-8
43503
Tulare
Lamont Meadow, Kern Plateau
1676
Comment
SD81215
Senecio flaccidus var. douglasii
Darley F. Howe
1971-10-5
Kern
Near Lebec.
Comment
SD103803
Senecio integerrimus var. exaltatus
Darley Howe
1978-6-22
Inyo
Near Cardinal Village, Bishop Creek.
2620
Comment
SD112504
Senecio integerrimus var. major
Darley F. Howe
1977-6-29
4980
Trinity
Weaver Bally Road
1735
Comment
CAS-BOT-BC333032
Senecio scorzonella
John Thomas Howell
1946-7-14
22235
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC364186
Senecio serra
John Thomas Howell
1942-7-26
17248
Tulare
Mineral King
Comment
UCD135753
Senecio sylvaticus
John Thomas Howell
1942-4-19
s.n.
Marin
Carson Ridge.
Comment
CAS-BOT-BC364493
Senecio triangularis
John Thomas Howell; Gordon H. True
1970-6-23
46628
Tulare
NE end of Big Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC240229
Setaria viridis
John Thomas Howell; Gordon H. True
1967-9-19
43902
Tulare
Kennedy Meadows Campground, South Fork of Kern River, Kern Plateau
1859
Comment
PGM1191
Setaria viridis
J. T. Howell
1973-11-4
Monterey
Salinas Valley, King City, in cultivated area (weedy)
Comment
SD44647
Sidalcea hartwegii
Darley F. Howe
1951-5-2
2107
Placer
4.0 miles north of Auburn.
456
Comment
GH420742
Sidalcea hickmanii subsp. viridis
J. T. Howell
1942-6-21
16997
Unknown
Carson Ridge
Comment
RSA127567
Sidalcea hickmanii subsp. viridis
J. T. Howell
1954-6-23
s.n.
Marin
Carson Ridge
Comment
SD113825
Sidalcea hirsuta
Darley F. Howe
1962-5-13
3223
Tulare
Sequoia National Forest, 5.1 miles east of entrance on #190.
Comment
CAS-BOT-BC213161
Sidalcea oregana subsp. hydrophila
John Thomas Howell
1943-8-3
18997
Glenn
Plaskett Meadows
1828
Comment
SDSU8185
Sidalcea oregana subsp. hydrophila
D. F. Howe
1965-8-4
4099
Lake
19 miles north of middletown of state #29.
610
Comment
CAS-BOT-BC179065
Sidalcea oregana subsp. oregana
John Thomas Howell
1934-6-12
11999
Modoc
6 mi. S of Davis Creek.
Comment
CAS-BOT-BC384314
Silene bernardina
John Thomas Howell
1941-7-31
16542
Madera
Agnew Pass Trail
Comment
SEINET196489
Silene bernardina
John Thomas Howell
1949-7-17
Inyo
Wonoga Peak Sierra Nevada.
2743
Comment
CAS-BOT-BC384574
Silene coniflora
John Thomas Howell
1946-5-30
21963
Marin
Little Carson Canyon
Comment
SD147601
Silene douglasii
John Thomas Howell, Gordon H. True
1970-7-14
5523
Sierra
At Verdi Peak Lookout, Verdi Range.
2560
Comment
CAS-BOT-BC389255
Silene lemmonii
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-26
53049
Calaveras
Near Dorrington
1524
Comment
CAS-BOT-BC389322
Silene lemmonii
John Thomas Howell
1976-5-17
51688
Kern
Near headwaters of Lumreau Creek, about 3 miles south-east of Glennville, on Farnsworth Ranch. Greenhorn Mountains
1402
Comment
CAS-BOT-BC389344
Silene lemmonii
John Thomas Howell
1923-6-23
81
Mariposa
Near Stella Lake, Wawona
1219
Comment
CAS-BOT-BC389785
Silene sargentii
John Thomas Howell
1947-8-14
24112
Inyo
Inconsolable Range above Thunder & Lightning Lake
3657
Comment
CAS-BOT-BC389809
Silene sargentii
John Thomas Howell
1941-7-24
16433
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC74967
Sinapis arvensis
John Thomas Howell; Gordon H. True
1968-6-10
44539
Plumas
Sierra Nevada. Quincy.
1036
Comment
CAS-BOT-BC175951
Solanum aviculare
John Thomas Howell
1957-6-27
32778
Marin
On roadside Steep Ravine, Mt. Tamalpais
Comment
CAS-BOT-BC156841
Solanum umbelliferum
J. T. Howell
1943-7-25
18806
Placer
West side of Donner Pass near Norden
2134
Comment
CAS-BOT-BC157417
Solanum umbelliferum
J. T. Howell
1930-3-28
4588
San Benito
The Pinnacles
Comment
CAS-BOT-BC157473
Solanum umbelliferum
J. T. Howell
1963-6-23
39633
Monterey
On Peachtree Road along San Lorenzo Creek southeast of Lonoak
Comment
CAS-BOT-BC154707
Solanum umbelliferum
J. T. Howell
1954-5-19
29911
Mariposa
Mt. Bullion
640
Comment
CAS-BOT-BC157249
Solanum umbelliferum
J. T. Howell
1931-3-22
5951
Monterey
Stone Canyon 8 miles east of Salinas Valley
Comment
RSA215966
Solidago californica
J. T. Howell
1956-7-22
31720
San Francisco
Summit ridge of Bayview Hills
Comment
SD37163
Solidago corymbosa
Darley F. Howe
1941-8-8
1261
Inyo
Lone Pine Creek
3140
Comment
CAS-BOT-BC365588
Solidago elongata
John Thomas Howell
1945-8-14
21401
Sonoma
Perry Marsh
Comment
UC1177262
Solidago elongata
John Thomas Howell
1945-8-19
21426
Marin
near Ledum Swamp (Point Reyes Peninsula); Point Reyes Peninsula
Comment
SD51225
Solidago velutina subsp. californica
Darley F. Howe
1960-9-20
2984
Plumas
North fork of Feather River, 41 miles from Oroville.
609
Comment
SD112524
Solidago velutina subsp. californica
Darley F. Howe
1977-10-10
5009
Marin
3 miles north of Tamales.
Comment
CAS-BOT-BC374574
Sonchus oleraceus
John Thomas Howell
1960-8-20
36243
Tehama
Near Lassen Volcanic National Park. Morgan
1463
Comment
SD113009
Sonchus tenerrimus
Darley F. Howe
1977-5-6
4937
San Diego
Near corner of Melrose Drive and Melrose Way, Vista.
Comment
UCD92789
Sorghum bicolor
John Thomas Howell
1967-11-3
44045
Tulare
About 4.5 miles ENE of Pixley, Valley Grassland.
83
Comment
CAS-BOT-BC235332
Sorghum halepense
John Thomas Howell
1939-9-3
15344
Marin
San Antonio Creek
Comment
CAS-BOT-BC236613
Spartina foliosa
John Thomas Howell
1939-9-3
15331
Marin
Corte Madera salt marsh
Comment
SEINET10893852
Spartina gracilis
John Thomas Howell
1938-8-8
Howell 14390
Mono
Long Valley.
Comment
CAS-BOT-BC390058
Spergularia
John Thomas Howell
1987-10-15
s.n.
Napa
Vineyard of Eugene and Cody Gillette Kirkham, Silverado Trail North, St. Helena
Comment
CAS-BOT-BC390070
Spergularia atrosperma
John Thomas Howell
1929-4-11
4145
Merced
7 1/2 miles sw. of Merced on Los Banos Road, San Joaquin Valley
45
Comment
NY342700
Spergularia atrosperma
J. T. Howell
1938-5-28
13826
Merced
Los Banos Hills
Comment
POM248704
Spergularia macrotheca var. longistyla
J. T. Howell
1938-4-10
13739
Alameda
Eastern Livermore Valley.
Comment
SD112876
Spergularia macrotheca var. macrotheca
Darley F. Howe
1941-4-13
1074
San Diego
Saline flat, Silver Strand.
Comment
CAS-BOT-BC390754
Spergularia marina
John Thomas Howell
1938-4-10
13742
Alameda
Eastern Livermore Valley
Comment
UCD99243
Spergularia marina
John Thomas Howell
1972-6-25
48903
Solano
on Carquinez Strait, western part of Benecia.
Comment
CAS-BOT-BC390622
Spergularia rubra
John Thomas Howell
1940-5-20
s.n.
Marin
Pt. Reyes Lighthouse
Comment
RSA126199
Spergularia salina
J. T. Howell
1944-6-25
19649
Marin
Santa Venetia.
Comment
CAS-BOT-BC390995
Spergularia villosa
John Thomas Howell
1953-5-24
29018
Tuolumne
Near Montezuma on road to Chinese Camp
381
Comment
CAS-BOT-BC213205
Sphaeralcea
John Thomas Howell
1958-5-28
33532
Inyo
Bishop Creek, Sierra Nevada
1950
Comment
SD50728
Sphaeralcea ambigua var. ambigua
Darley F. Howe
1959-8-14
2699
Inyo
17.5 miles east of Furnace Creek Inn.
914
Comment
CAS-BOT-BC374765
Sphaeromeria potentilloides var. potentilloides
John Thomas Howell
1962-6-19
37878
Plumas
Chilcoot
1524
Comment
SD98959
Spiraea densiflora
D. F. Howe
1977-7-1
Siskiyou
Mountain Creek on Scott River Road
1463
Comment
SD88345
Stachys emersonii
Darley F. Howe
1972-7-6
Siskiyou
1.3 miles south of Oregon state line on road to Happy Camp.
1646
Comment
SD61050
Stachys rigida var. rigida
Darley F. Howe
1964-8-7
3943
Humboldt
8.2 miles from Highway 96 on Mill Creek Road. Hoopa Valley.
1067
Comment
GH379865
Stanfordia californica
J. T. Howell
1931-3-18
5821
Unknown
Jacalitos Canyon, w. Fresno Co.
Comment
RSA165489
Stanleya elata
D. F. Howe
1961-6-18
s.n.
Inyo
6.3 miles from Westgard Pass on road to Big Pine, White Mts
1524
Comment
CAS-BOT-BC374835
Stebbinsoseris heterocarpa
John Thomas Howell
1963-5-6
39100
Monterey
Santa Lucia Mountains. 4 miles south of King City on road to Jolon
121
Comment
RSA95418
Stellaria longipes
J. T. Howell
1951-6-27
27587
Plumas
McRae Meadow.
1982
Comment
CAS-BOT-BC393725
Stellaria media
John Thomas Howell
1964-4-28
40568
Mariposa
Granitic country just south of Morman Bar on road to Ben Hur
548
Comment
CAS-BOT-BC398265
Stellaria umbellata
John Thomas Howell
1949-8-10
26207
Tulare
Upper Soldier Lake
3413
Comment
CAS-BOT-BC375088
Stephanomeria
John Thomas Howell
1927-11-26
3241
San Diego
Central Borrego Valley, w. Colorado Desert
182
Comment
CAS-BOT-BC375234
Stephanomeria elata
John Thomas Howell
1947-7-15
23353
Monterey
San Simeon Highway at Castro Canyon
Comment
CAS-BOT-BC375345
Stephanomeria exigua subsp. coronaria
John Thomas Howell
1970-11-8
47508
Kern
Slope above east arm of Lake Isabella, 6.5 miles from South Fork Kern River bridge on road from Weldon to Kernville
792
Comment
CAS-BOT-BC375712
Stephanomeria runcinata
John Thomas Howell
1957-6-23
32707
Kern
Edison
Comment
CAS-BOT-BC375772
Stephanomeria virgata
John Thomas Howell
1958-7-27
34018
Fresno
Tehipite Valley, Middle Fork of the Kings River
1280
Comment
CAS-BOT-BC375824
Stephanomeria virgata
John Thomas Howell
1946-9-22
23029
Marin
Bald Mt.
Comment
SEINET4413877
Streptanthus albidus
J. T. Howell
1937-1
13097
Unknown
Comment
CAS-BOT-BC61350
Streptanthus cordatus var. piutensis
John Thomas Howell; Gordon H. True
1971-6-17
48039
Kern
Sierra Nevada. 1 mile east of Bodfish Gap.
1310
Comment
SD147613
Streptanthus cordatus var. piutensis
John Thomas Howell, Gordon H. True
1971-6-17
48039
Kern
Sierra Nevada; 1.0 mile east of Bodfish Gap.
1310
Comment
GH422079
Streptanthus fenestratus
J. T. Howell
1960-6-6
35335
Unknown
Copper Creek Trail, Kings River Canyon
1676
Comment
CAS-BOT-BC87256
Streptanthus glandulosus subsp. pulchellus
John Thomas Howell
1940-5-12
15425
Marin
Between Little Carson and Carson Ridge.
Comment
CAS-BOT-BC87279
Streptanthus glandulosus subsp. secundus
John Thomas Howell
1944-5-21
19488
Marin
Mount Tamalpais. South side of Phoenix Lake.
Comment
CAS-BOT-BC87433
Streptanthus polygaloides
John Thomas Howell; Gordon H. True
1967-6-11
42559
Butte
Sierra Nevada. Northeast side of Feather River Canyon near Pulga Bridge.
417
Comment
CAS-BOT-BC87521
Streptanthus tortuosus
John Thomas Howell
1963-7-12
39845
El Dorado
Sierra Nevada. Meyers.
1935
Comment
CAS-BOT-BC87890
Streptanthus tortuosus
John Thomas Howell
1937-7-31
13705
Trinity
11 miles west of Big Bar.
Comment
CAS-BOT-BC87913
Streptanthus tortuosus
John Thomas Howell
1972-4-24
48689
Mariposa
Sierra Nevada. 3 miles from Briceburg on road to El Portal in Merced River Canyon.
396
Comment
GH422374
Streptanthus tortuosus
J. T. Howell
1958-7-23
33821
Unknown
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
JEPS54007
Streptanthus tortuosus
John T. Howell
1925-7-1
1292
El Dorado
on hwy above and nw Emerald Bay; Lake Tahoe
1950
Comment
CAS-BOT-BC110452
Suaeda taxifolia
John Thomas Howell
1931-4-11
6268
Santa Barbara
Valley Anchorage. Santa Cruz Island.
Comment
CAS-BOT-BC237045
Symphoricarpos mollis
John Thomas Howell
1957-7-28
32824
San Francisco
Bayview Hills, San Francisco
Comment
CAS-BOT-BC237111
Symphoricarpos mollis
John Thomas Howell
1969-8-29
46061
Tulare
Mineral King, Sierra Nevada
2377
Comment
CAS-BOT-BC97558
Symphyotrichum ascendens
John Thomas Howell
1961-9-22
36814 A
Plumas
Greenville
1088
Comment
JEPS58961
Symphyotrichum ascendens
J. Thomas Howell
1959-9-24
34973
Plumas
Beckwourth Sierra Nevada
1487
Comment
CAS-BOT-BC99016
Symphyotrichum eatonii
John Thomas Howell
1963-8-22
40296
Alpine
Sierra Nevada - Woodfords
1716
Comment
CAS-BOT-BC98555
Symphyotrichum lentum
John Thomas Howell
1933-9-17
11679
Solano
Just east of Suisun on road to Rio Vista
Comment
UCD86175
Taeniatherum caput-medusae
John Thomas Howell
1962-6-15
37484
Butte
Magalia.
731
Comment
CAS-BOT-BC328908
Taraxacum californicum
John Thomas Howell
1947-7-23
23530
San Bernardino
South Fork, Santa Ana River, San Bernardino Mountains
2590
Comment
SD67300
Taraxia ovata
Darley F. Howe
1967-4-10
San Luis Obispo
1.9 miles north of Cambria.
Comment
CAS-BOT-BC85204
Taxus brevifolia
John Thomas Howell; Gordon H. True
1970-5-27
46526
El Dorado
Sierra Nevada - Blodgett Experimental Forest
1280
Comment
SD113869
Tetracoccus dioicus
Darley F. Howe
1953-4-12
2262
San Diego
One Palm Canyon, on the road from Santa Margarita River ford to De Luz
Comment
SDSU570
Tetradymia axillaris var. longispina
D. F. Howe
1948-5-3
1803
Los Angeles
1.5 miles south of Lancaster.
Comment
UC990948
Tetradymia axillaris var. longispina
D. F. Howe
1948-5-3
Los Angeles
1.5 mi s Lancaster
792
Comment
CAS-BOT-BC329015
Tetradymia canescens
John Thomas Howell
1963-8-20
40186
Inyo
Whitney Portal
2438
Comment
CAS-BOT-BC340062
Tetradymia comosa
John Thomas Howell
1927-8-7
2962
San Diego
SE. of Dulzura Ranch on road to Campo
335
Comment
CAS-BOT-BC399728
Thalictrum fendleri
John Thomas Howell
1924-6-20
426
Mariposa
Near Merced River, Wawona
1219
Comment
CAS-BOT-BC399783
Thalictrum polycarpum
John Thomas Howell
1945-6-19
21079
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC399920
Thalictrum sparsiflorum
John Thomas Howell
1946-7-14
22279
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC399960
Thalictrum sparsiflorum
John Thomas Howell
1940-7-30
15700
Tulare
East Lake
2926
Comment
SD29581
Thalictrum sparsiflorum
Darley F. Howe
none given
1154
Inyo
Lone Pine Creek
Comment
CAS-BOT-BC88050
Thelypodium crispum
John Thomas Howell
1955-7-19
30797
Plumas
Sierra Nevada. Vinton.
1505
Comment
CAS-BOT-BC88121
Thelypodium laciniatum
John Thomas Howell
1958-5-28
33576
Inyo
Sierra Nevada. Bishop Creek.
1554
Comment
CAS-BOT-BC88127
Thelypodium laciniatum
John Thomas Howell
1938-8-7
14339
Mono
Crooked Creek.
2057
Comment
RSA299169B
Thinopyrum intermedium
J. T. Howell, Gordon H. True
1969-8-7
43426
Tulare
about 2 miles, northwest of Beach meadow; Kern Plateau
2500
Comment
CAS-BOT-BC197368
Thinopyrum intermedium subsp. barbulatum
John Thomas Howell
1974-7-10
50520
Lassen
At the cemetery along road, Janesville
1295
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-BC88236
Thysanocarpus curvipes
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52761
Calaveras
Sierra Nevada. Camp Nine Road northeast of Vallecito.
609
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-BC88412
Thysanocarpus curvipes
John Thomas Howell
1945-6-21
21149
Lake
Bartlett Mountain. Sawmill Flat to Ruppert Ridge.
Comment
CAS-BOT-BC66788
Thysanocarpus curvipes
John Thomas Howell
1927-4-5
2300
Shasta
Near Frazier Corners, 10 miles northeast of Redding.
Comment
CAS-BOT-BC66874
Thysanocarpus curvipes
John Thomas Howell; Gordon H. True
1968-5-13
44252
Tulare
Sierra Nevada. Kern Plateau. North Meadow Creek.
1981
Comment
CAS-BOT-BC88458
Thysanocarpus curvipes
John Thomas Howell
1928-5-4
3767
Los Angeles
San Gabriel Mountains. Morrovia Canyon above the dam.
Comment
RSA0041665
Thysanocarpus curvipes var. elegans
John Thomas Howell
1947-4-27
23106
Marin
Bald Mt. west of San Anselmo.
Comment
CAS-BOT-BC67225
Thysanocarpus laciniatus
John Thomas Howell; Gordon H. True
1967-5-30
42481
Tulare
Sierra Nevada. Kern Plateau. About midway between Lamont Meadow and Long Valley.
1554
Comment
RSA223366
Thysanocarpus laciniatus
J. T. Howell
1931-4-10
6199
Santa Barbara
Santa Cruz Island. Valle del Medio.
Comment
CAS-BOT-BC67228
Thysanocarpus laciniatus
John Thomas Howell; Gordon H. True
1969-5-14
45736
Tulare
Sierra Nevada. Kern Plateau. Marble ridge just north of Cherry Hill Road at start of Rincon Trail, Brush Creek Canyon.
1463
Comment
CAS-BOT-BC447596
Tiarella trifoliata subsp. unifoliata
John Thomas Howell
1930-7-27
5394
Sonoma
Deep shade of redwood forest, 1 mile north of Fort Ross
Comment
RSA378167
Tofieldia glutinosa subsp. occidentalis
J. T. Howell
1948-7-22
24909
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows.
2896
Comment
SD88344
Tolmiea menziesii
Darley F. Howe
1972-7-6
Siskiyou
1.3 miles south of Oregon State line, on road to Happy Camp
1646
Comment
UC905053
Torreya californica
John Thomas Howell
1948-5-16
24304
Marin
near top of Eldridge Grade Mt. Tamalpais, Eldridge Grade
Comment
UCD93295
Torreyochloa erecta
John Thomas Howell
1962-9-23
38820
Kern
Sierra Nevada. Greenhorn Mountains. North of Tiger Flat. Transition Zone Forest.
2133
Comment
SEINET196519
Torreyochloa pallida var. pauciflora
J. T. Howell
1945-9-25
21506
Tuolumne
Second lake east of Young Lake
3078
Comment
SD112799
Toxicoscordion brevibracteatum
Darley F. Howe
1962-4-19
3211
Kern
On #14, 11.5 miles south of junction with #395.
1006
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-BC438305
Trianthema portulacastrum
John Thomas Howell; Gordon H. True
1967-9-21
43964
Tulare
About 4 1/2 miles east-northeast of Pixley. Outside fence at NW corner.
83
Comment
UC575714
Trifolium albopurpureum var. dichotomum
John Thomas Howell
1935-4-11
12593
Alameda
Tesla Hills
Comment
UC1177204
Trifolium depauperatum var. amplectens
John Thomas Howell
1946-4-18
21646
Marin
Ignacio
Comment
SD113219
Trifolium eriocephalum
Darley F. Howe
1958-7-1
4858
Del Norte
Sanger Peak Road, 11 miles south of the north entrance to Siskiyou National Forest
1646
Comment
JEPS33666
Trifolium gracilentum var. gracilentum
John Thomas Howell
1926-3-28
1776
Napa
near Calistoga (Myrtledale Hot Springs)
Comment
RSA128935
Trifolium macraei
J. T. Howell
1949-5-25
25333
Marin
Point Reyes Peninsula
Comment
CAS-BOT-BC230887
Trifolium productum
John Thomas Howell
1937-7-24
13402
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
SD113235
Trifolium wormskioldii
Darley F. Howe
1936-7-1
390
San Diego
Laguna Mountains
Comment
SD69944
Trillium chloropetalum
Darley F. Howe
1968-5-28
4537
Unknown
Divide between Mendocino and Tehama Counties.
1768
Comment
SD44180
Triphysaria pusilla
Darley F. Howe
1948-5-20
Placer
Placer Co.
456
Comment
CAS-BOT-BC200121
Trisetum canescens
John Thomas Howell
1950-7-19
27082
Tulare
Bakeoven to Hessian Meadows
2529
Comment
CAS-BOT-BC193573
Trisetum spicatum
John Thomas Howell
1946-7-20
22538
Fresno
Mono Rock
3352
Comment
CAS-BOT-BC193577
Trisetum spicatum
John Thomas Howell
1948-7-24
24988
Fresno
Bullfrog Lake
3240
Comment
CAS-BOT-BC200286
Trisetum spicatum
John Thomas Howell
1940-8-1
15786
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC200290
Trisetum spicatum
John Thomas Howell
1951-7-20
28006
Tulare
Southeast of Farewell Gap
3291
Comment
CAS-BOT-BC200411
Trisetum spicatum
John Thomas Howell; Gordon H. True
1970-6-23
46632
Tulare
NE end of Big Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC200433
Trisetum spicatum
John Thomas Howell
1944-8-15
20539
Tuolumne
Mt. Conness
3505
Comment
CAS-BOT-BC521294
Triteleia ixioides subsp. anilina
John Thomas Howell
1960-5-2
35241
Mariposa
Sierra Nevada, Northwest of Coulterville
Comment
CAS-BOT-BC526505
Triteleia laxa
John Thomas Howell
1963-5-5
38977
Merced
Mustang Grade, west of Priest Valley
670
Comment
CAS-BOT-BC526777
Triteleia laxa
John Thomas Howell
1956-6-17
31575
San Francisco
Summit ridge of Bayview Hills
Comment
CAS-BOT-BC200471
Triticum aestivum
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-26
53073
Calaveras
Near Dorrington
1524
Comment
CAS-BOT-BC200513
Triticum aestivum
John Thomas Howell
1956-4-29
31308
San Francisco
Embarcadero at Berry St., San Francisco
Comment
CAS-BOT-BC67439
Tropidocarpum gracile
John Thomas Howell
1960-3-25
35173
Kern
Sierra Nevada. Wofford Mountains.
807
Comment
CAS-BOT-BC67494
Tropidocarpum gracile
John Thomas Howell
1930-5-12
4871
Los Angeles
1 mile north of Acton.
Comment
SD113153
Tropidocarpum gracile
Darley F. Howe
1938-3-19
596
San Diego
North end of Pt. Loma.
Comment
SDSU1321
Tropidocarpum gracile
D. F. Howe
1962-4-15
3192
San Bernardino
3.5 miles north of junction with #91 on #395.
1097
Comment
CAS-BOT-BC74137
Turritis glabra
John Thomas Howell; Gordon H. True
1968-5-14
44381
Tulare
Sierra Nevada. Kern Plateau. Cherry Hill Road at Rincon Trail, Brush Creek Canyon.
1463
Comment
UC1177406
Typha angustifolia
John Thomas Howell
1948-9-19
25288
Marin
Phoenix Lake Mt. Tamalpais; , Phoenix Lake
Comment
SD112126
Typha latifolia
Darley F. Howe
1937-8-22
582
San Diego
Irrigation ditch, Chula Vista
Comment
CAS-BOT-BC208024
Ulex europaeus
John Thomas Howell
1953-2-1
28921
Santa Cruz
in hills ne. of Scott [Scott's] Valley
Comment
UCD111323
Ulmus pumila
John Thomas Howell
1958-5-29
33624
Inyo
Bishop.
1264
Comment
CHSC52405
Umbellularia californica
M. P. Howe
1984-4-20
14
Butte
Doe Mill Summit.
579
Comment
UCD138039
Umbellularia californica
John Thomas Howell
1965-4-26
41150
Madera
Sierra Nevada, 3 miles south of Oakhurst.
Comment
CAS-BOT-BC381914
Uropappus lindleyi
John Thomas Howell
1967-5-24
42254
Marin
Dakin Lane, just north of Old St. Hilary's Church, Tiburon
Comment
CAS-BOT-BC404002
Urtica dioica subsp. holosericea
John Thomas Howell
1957-8-19
32914
San Francisco
San Francisco. Near Quarry Lake, Golden Gate Park
Comment
CAS-BOT-BC193998
Vaccinium cespitosum
John Thomas Howell
1958-7-20
33693
Fresno
Granite Basin, Sierra Nevada
3048
Comment
CAS-BOT-BC193889
Vaccinium ovatum
John Thomas Howell
1931-4-13
6345
Santa Barbara
Near west end, Santa Cruz Island
Comment
POM203931
Vaccinium parvifolium
J. T. Howell
1927-8-25
3057
Mendocino
3 miles east of Ft. Bragg.
Comment
RSA70260
Vaccinium scoparium
J. T. Howell
1939-8-6
s.n.
Siskiyou
Marble Mountains
Comment
CAS-BOT-BC391330
Velezia rigida
John Thomas Howell
1953-5-24
29029
Tuolumne
At Jacksonville
274
Comment
SD81275
Viola adunca
Darley F. Howe
1969-5-31
Del Norte
Rowdy Creek Road
609
Comment
SD114512
Viola douglasii
Darley F. Howe
1939-4-11
799
San Diego
Julian
Comment
SEINET11991645
Viola douglasii
M. P. Howe
1984-1
16
Butte
Paradise West Quadrangle, Salmon Hole, upper Bidwell Park
183
Comment
SDSU11424
Viola lobata
D. F. Howe
1965-5-21
4068
Placer
Canyon on south side of north fork of American River between Forest hill and Yankee Jims.
914
Comment
CAS-BOT-BC530099
Viola lobata subsp. lobata
John Thomas Howell
1962-6-15
37464
Butte
near Magalia
731
Comment
SD60944
Viola macloskeyi
Darley F. Howe
1964-7-19
Fresno
Badger Flat east of Huntington Lake, Sierra Nat. Forest
2438
Comment
CAS-BOT-BC270136
Viola pinetorum var. grisea
John Thomas Howell
1962-7-11
38572
Kern
N slope of Black Mountain, Greenhorn Mountains
2255
Comment
SD69975
Viola sempervirens
Darley F. Howe
1968-5-22
Unknown
8 miles north of Jenner, California on route 1.
Comment
CAS-BOT-BC203024
Vitis californica
John Thomas Howell
1961-9-22
36751
Butte
Feather River Highway 3 miles from Oroville
Comment
CAS-BOT-BC385041
Vitis californica
John Thomas Howell; H. Keith Wagnon
1980-5-28
53689
Plumas
Sierra Nevada: Indian Falls, near Indian Creek
975
Comment
CAS-BOT-BC193599
Vulpia bromoides
John Thomas Howell
1964-4-26
40445
Mariposa
Southeast of Mariposa on the road to Morman Bar - Sierra Nevada
594
Comment
CAS-BOT-BC198786
Vulpia bromoides
John Thomas Howell
1941-5-25
16198
Marin
West Point to West Peak, Mt. Tamalpais
Comment
CAS-BOT-BC198790
Vulpia bromoides
John Thomas Howell
1939-4-23
14617
Marin
Upper Throckmorton Trail, Mt. Tamalpais
Comment
CAS-BOT-BC199900
Vulpia bromoides
John Thomas Howell
1947-6-26
23314
Sonoma
Cunningham Marsh
Comment
RSA114301
Vulpia eastwoodiae
J. T. Howell
1957-4-13
32022
San Joaquin
Corral Hollow.
Comment
UCD94552
Vulpia microstachys
John Thomas Howell
1965-4-26
41165
Madera
3 miles south of Oakhurst.
914
Comment
CAS-BOT-BC183207
Vulpia microstachys var. ciliata
John Thomas Howell; Walter Knight; Irja Knight; Gordon True
1967-6-12
1984
Plumas
Near barn in valley proper. Butterfly Botanical Area and Vicinity
1036
Comment
CAS-BOT-BC183682
Vulpia microstachys var. ciliata
John Thomas Howell
1957-4-13
32022
San Joaquin
Corral Hollow
Comment
CAS-BOT-BC199974
Vulpia microstachys var. ciliata
John Thomas Howell; R. C. Barneby
1954-5-14
29574
Tehama
9 miles east of Paynes Creek
1005
Comment
UC817987
Vulpia microstachys var. ciliata
John Thomas Howell
1938-6-9
13909
Marin
Laurel Dell; Mt. Tamalpais
Comment
RSA99653
Vulpia microstachys var. ciliata
J. T. Howell
1953-5-24
29026
Tuolumne
Near Chinese Camp.
381
Comment
CAS-BOT-BC183944
Vulpia microstachys var. microstachys
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49202
Lassen
Elysian Valley northwest of Janesville
1325
Comment
CAS-BOT-BC184256
Vulpia microstachys var. pauciflora
John Thomas Howell; Gordon H. True
1971-6-15
47809
Kern
Flying Dutchman Creek canyon on Havilah-Mt. Breckenridge road
1249
Comment
CAS-BOT-BC184320
Vulpia microstachys var. pauciflora
John Thomas Howell
1943-5-11
18020
Lake
1 mile south of Lakeport
Comment
CAS-BOT-BC184331
Vulpia microstachys var. pauciflora
John Thomas Howell
1945-6-19
21055
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC184351
Vulpia microstachys var. pauciflora
John Thomas Howell
1946-5-14
21839
Marin
Between Barths Retreat and Potrero Meadow, Mt. Tamalpais
Comment
CAS-BOT-BC184619
Vulpia microstachys var. pauciflora
John Thomas Howell; Gordon H. True
1971-7-15
48558
Tulare
Northeast of Taylor Meadow between Church Dome and Black Mt., Kern Plateau
2316
Comment
UCD94542
Vulpia microstachys var. pauciflora
John Thomas Howell
1958-7-30
34100
Fresno
Simpson Meadow, Middle Fork of the Kings River.
1813
Comment
UCD94548
Vulpia microstachys var. pauciflora
John Thomas Howell
1962-7-9
38338
Kern
Isabella.
762
Comment
GH361292
Vulpia myuros
J. T. Howell
1943-5-22
18115
Unknown
Mulholland Drive 1.3 miles west of Laurel Canyon Boulevard
350
Comment Read comments May 25 2012
UCD94779
Vulpia myuros
John Thomas Howell
1960-6-7
35416
Fresno
Kings Canyon Road, 6.5 miles NE of Cherry Gap.
1554
Comment
SEINET199933
Vulpia myuros f. megalura
John Thomas Howell
1943-5-22
18137
Marin
Fairfax Hills
Comment
CAS-BOT-BC185680
Vulpia myuros subsp. megalura
John Thomas Howell
1962-6-17
37684
Plumas
Butterfly Valley
1036
Comment
CAS-BOT-BC184679
Vulpia myuros subsp. megalura
John Thomas Howell
1954-5-16
s.n.
Sacramento
5 miles sw. of Folsom
Comment
CAS-BOT-BC185737
Vulpia myuros subsp. megalura
John Thomas Howell
1957-5-5
32164
San Francisco
East end of 22nd St.
Comment
SEINET10604546
Vulpia myuros var. hirsuta
John Thomas Howell
1948-5-16
Howell 24299
Marin
Upper part of Cascade Canyon, Mt. Tamalpais.
Comment
CAS-BOT-BC185863
Vulpia octoflora var. hirtella
John Thomas Howell
1960-5-2
35253
Mariposa
Near Coulterville
548
Comment
CAS-BOT-BC185870
Vulpia octoflora var. hirtella
John Thomas Howell
1958-5-24
33318
Inyo
Whitney Portal road
1981
Comment
CAS-BOT-BC383699
Xanthium strumarium
John Thomas Howell
1970-11-8
47518
Kern
Lake Isabella. 4 miles from South Fork Kern River bridge on road from Weldon to Kernville
792
Comment
CAS-BOT-BC383788
Xanthium strumarium
John Thomas Howell
1952-10-19
28855
Santa Clara
Near Sargent
Comment
CAS-BOT-BC530475
Zigadenus fontanus
John Thomas Howell
1942-6-21
17000
Marin
Warm Spring, Big Carson
Comment
HSC15777
Zigadenus fremontii
J. Wendell Howe
1930-3-30
78
Humboldt
Diamond Canyon, presumed Humboldt Co. but not stated
Comment