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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
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CAS-BOT-BC78140
Abies X shastensis
John Thomas Howell
1950-7-22
27168
Tulare
Olancha Peak
2773
Comment
CAS-BOT-BC73521
Abies concolor
John Thomas Howell; Gordon H. True
1970-7-30
47146
Tulare
Sierra Nevada, Kern Plateau - southwest end of Big Meadow just east of Cherry Hill Road.
2377
Comment
CAS-BOT-BC78094
Abies magnifica
John Thomas Howell
1960-8-19
36140
Tehama
Brokeoff Mt. Trail
2590
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
RSA88570
Acer glabrum var. torreyi
J. T. Howell
1951-6-28
27700
Plumas
Eureka Peak
1982
Comment
CAS-BOT-BC331533
Acer macrophyllum
John Thomas Howell
1946-9-8
23000
Marin
Lagunitas Creek just below Lake Lagunitas. Mt. Tamalpais
Comment
CAS-BOT-BC21690
Achillea millefolium
John Thomas Howell
1958-8-13
34400
Madera
Near Isberg Lake
2987
Comment
CAS-BOT-BC30057
Achillea millefolium
John Thomas Howell
1940-8-5
15999
Tulare
Between East Lake and Reflection Lake
Comment
CAS-BOT-BC30447
Achillea millefolium
John Thomas Howell
1938-7-17
13977
Solano
Suisun Marshes at Benecia Junction
Comment
UCD51447
Achnatherum X bloomeri
John Thomas Howell
1963-8-20
40185
Inyo
Whitney Portal.
2545
Comment
CAS-BOT-BC218023
Achnatherum latiglume
John Thomas Howell
1962-7-9
38394
Kern
Near Park Headquarters, Greenhorn Mountains
1798
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-BC210640
Achnatherum lemmonii
John Thomas Howell
1967-6-22
42614
Butte
Magalia
701
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-BC216383
Achnatherum nevadense
John Thomas Howell; Gordon H. True
1971-7-15
48596
Kern
Near end of Cherry Hill Road at Bartolas Creek, Kern Plateau
2103
Comment
CAS-BOT-BC216357
Achnatherum occidentale
John Thomas Howell
1944-8-6
20018
Tuolumne
Slope N of Tuolumne Meadows
Comment
CAS-BOT-BC216869
Achnatherum occidentale
John Thomas Howell
1963-7-11
39829
Nevada
3 miles NE of Truckee
1767
Comment
CAS-BOT-BC216980
Achnatherum occidentale
John Thomas Howell
1951-7-19
27966
Tulare
Monarch Lakes Trail
2590
Comment
CAS-BOT-BC210866
Achnatherum occidentale subsp. californicum
John Thomas Howell
1939-8-6
15095
Siskiyou
Elk Mt., Marble Mts.
Comment
CAS-BOT-BC218654
Achnatherum occidentale subsp. californicum
John Thomas Howell
1949-8-4
26012
Tulare
Ridge west of Siberian Pass
3352
Comment
RSA299148
Achnatherum occidentale subsp. occidentale
J. T. Howell
1961-6-21
36700
Plumas
Greenville
1098
Comment
CAS-BOT-BC210938
Achnatherum occidentale subsp. pubescens
John Thomas Howell; Gordon H. True
1971-7-14
48411
Tulare
North Fork of Manter Creek, Kern Plateau
2225
Comment
UCD54016
Achnatherum occidentale subsp. pubescens
John Thomas Howell; Gorden H. True
1970-6-26
46871
Tulare
Taylor Meadow, Kern Plateau, Tulare County.
2194
Comment
RSA299174
Achnatherum speciosum
J. T. Howell
1958-5-24
33306
Inyo
Whitney Portal road.
1982
Comment
SEINET7593482
Achnatherum thurberianum
John Thomas Howell
1934-1
12273
Modoc
Duncan Horse Camp
Comment
CAS-BOT-BC391372
Aconitum columbianum subsp. columbianum
John Thomas Howell
1960-8-18
36077
Tehama
Near Lassen Volcanic National Park. Bluff Falls
1981
Comment
CAS-BOT-BC391507
Aconitum columbianum subsp. columbianum
John Thomas Howell
1937-7-22
13323
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
UCD128503
Acroptilon repens
John Thomas Howell
1952-10-26
28882
Kern
Rosamond.
716
Comment
CAS-BOT-BC29283
Adenocaulon bicolor
John Thomas Howell
1924-7-24
480
Mariposa
Wawona
1219
Comment
CAS-BOT-BC132900
Adenostoma fasciculatum
John Thomas Howell
1930-12-28
5720
Marin
Slopes of Mt. Tamalpais above Mill Valley
Comment
CAS-BOT-BC9055
Aegilops triuncialis
John Thomas Howell
1954-5-16
29610
El Dorado
Shingle Springs
426
Comment
RSA98049
Aegilops triuncialis
J. T. Howell
1953-7-5
29107
Marin
East Peak, Mt. Tamalpais.
Comment
JEPS18568
Ageratina adenophora
John Thomas Howell
1930-4-17
4714
Alameda
s side Strawberry Canon; Berkeley Hills, Strawberry Canon
Comment
CAS-BOT-BC29362
Ageratina adenophora
J. T. Howell
1956-4-22
31251
San Francisco
Vacant lot, Polk St. near Filbert St., San Francisco
Comment
RSA26483
Ageratina occidentalis
John T. Howell
1940-7-29
s.n.
Fresno
Between Charlotte Creek and Junction Meadow, Bubbs Creek
Comment
CAS-BOT-BC21385
Agoseris aurantiaca var. aurantiaca
John Thomas Howell
1941-8-6
16808
Madera
Between Shadow and Garnet Lakes
Comment
CAS-BOT-BC21344
Agoseris grandiflora var. grandiflora
John Thomas Howell
1940-5-20
15470
Marin
Fairfax
Comment
CAS-BOT-BC22729
Agoseris grandiflora var. grandiflora
J. T. Howell
1956-6-10
31510
San Francisco
North slope of Bayview Hills, San Francisco
Comment
CAS-BOT-BC15367
Agoseris grandiflora var. leptophylla
John Thomas Howell
1955-6-14
30396
Trinity
Weaverville
609
Comment
CAS-BOT-BC22937
Agoseris heterophylla
John Thomas Howell
1945-6-19
21060
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC22970
Agoseris heterophylla
John Thomas Howell
1933-5-14
11260
Contra Costa
Hills east of St. Mary's College
Comment
UC1106266
Agoseris heterophylla var. heterophylla
J. Thomas Howell
1947-5-4
23125
Marin
San Rafael Hills
Comment
RSA97655
Agoseris heterophylla var. heterophylla
J. T. Howell
1953-6-15
29093
Monterey
Hastings Reservation, Santa Lucia Mountains
Comment
CAS-BOT-BC13131
Agoseris hirsuta
John Thomas Howell
1943-6-8
18221
Marin
Tiburon Peninsula
Comment
CAS-BOT-BC13371
Agoseris retrorsa
J. T. Howell
1944-7-17
19830
Glenn
Canyon of Snow Basin Creek
Comment
CAS-BOT-BC13481
Agoseris retrorsa
J. T. Howell
1937-7-21
13245
Trinity
Big Flat
Comment
CAS-BOT-BC42948
Agoseris retrorsa
John Thomas Howell; Gordon H. True
1970-6-26
46825
Tulare
True Meadow, Kern Plateau
2225
Comment
CAS-BOT-BC127568
Agropyron cristatum
John Thomas Howell; Gordon H. True
1970-7-27
46935
Tulare
Sierra Nevada. Kern Plateau. Forested border of Big Meadow on the east side at Joughin Camp. Near corral.
2377
Comment
SEINET10506825
Agrostis
John Thomas Howell
1947-5-14
Howell 23149
Marin
Drakes Estero, WNW of Mount Vision. Restricted to gravelly slope on outcrop of diatomaceous shale of Monterey Series. Type collection.
Comment
HSC8776
Agrostis aristiglumis
J. T. Howell
1947-5-14
1411
Marin
Drakes Estero, WNW of Mt. Vision, Monterey Series
Comment
SEINET3916093
Agrostis avenacea
John Thomas Howell
1957-6-16
32643
San Francisco
San Francisco. Third and Davidson streets.; 0
Comment
CAS-BOT-BC127505
Agrostis blasdalei
John Thomas Howell
1947-5-14
23150
Marin
Drakes Estero west northwest of Mount Vision.
Comment
RSA126457
Agrostis blasdalei
J. T. Howell
1947-5-14
23150
Marin
Monterey Series, Drakes Estero, west-northwest of Mt. Vision.
Comment
SEINET10843169
Agrostis diegoensis
John Thomas Howell
1945-7-15
Howell s.n.
Unknown
Camp Lilienthal, amarin Co.
Comment
CAS-BOT-BC127212
Agrostis exarata
John Thomas Howell
1943-5-22
18125
Marin
Deer Park near Fairfax.
Comment
RSA384954
Agrostis exarata
J. T. Howell
1947-8-16
24142
Inyo
Big Pine Lakes Trail.
2805
Comment
UC1177029
Agrostis exarata
John Thomas Howell
1943-6-6
Marin
railroad grade above Muir Woods
Comment
CAS-BOT-BC139618
Agrostis gigantea
John Thomas Howell
1960-7-18
35521
Plumas
Lassen Volcanic National Park. Drakesbad.
1828
Comment
CAS-BOT-BC139484
Agrostis hallii
John Thomas Howell
1943-5-9
17965
Marin
San Rafael Hills.
Comment
CAS-BOT-BC139181
Agrostis idahoensis
John Thomas Howell; Gordon H. True
1971-7-14
48392
Tulare
Sierra Nevada. Kern Plateau. North Fork of Manter Creek.
2377
Comment
CAS-BOT-BC139335
Agrostis idahoensis
John Thomas Howell
1958-7-27
34026 A
Fresno
Sierra Nevada. Tehipite Valley, Middle Fork of the Kings River.
1280
Comment
CAS-BOT-BC139249
Agrostis idahoensis
John Thomas Howell
1960-7-23
35956
Plumas
Lassen Volcanic National Park. Drakesbad. Near Soda Spring.
1828
Comment
CAS-BOT-BC139031
Agrostis pallens
John Thomas Howell
1943-5-30
18183
Marin
Mill Valley. Summit Avenue.
Comment
UCD53205
Agrostis pallens
John Thomas Howell
1943-6-10
18236
Napa
Hills southwest of St. Helena.
Comment
CAS-BOT-BC138713
Agrostis scabra
John Thomas Howell
1960-7-20
35772
Plumas
Lassen Volcanic National Park. Boiling Springs Lake.
1798
Comment
UCD53456
Agrostis stolonifera
John Thomas Howell
1960-7-18
35521
Plumas
Drakesbad.
1676
Comment
CAS-BOT-BC138481
Agrostis variabilis
John Thomas Howell
1939-8-9
15214
Siskiyou
Sky High Valley, Marble Mountains.
1828
Comment
UC1177036
Agrostis viridis
John Thomas Howell
1944-6-25
19641
Marin
San Rafael
Comment
CAS-BOT-BC267056
Alisma
John Thomas Howell
1961-9-23
36850
Plumas
Indian Valley
1082
Comment
CAS-BOT-BC445440
Alisma triviale
John Thomas Howell
1980-9-8
53890
Marin
Between Lake Lagunitas picnic area and Bon Tempe Lake
Comment
CAS-BOT-BC131967
Allium
John Thomas Howell; R. C. Barneby
1954-5-14
29570
Tehama
9 miles east of Paynes Creek
1005
Comment
CAS-BOT-BC462962
Allium bisceptrum
John Thomas Howell; Gordon H. True
1967-5-29
42413
Tulare
near north end of Long Valley, Kern Plateau, Sierra Nevada
2103
Comment
CAS-BOT-BC466446
Allium campanulatum
John Thomas Howell
1942-7-24
17128
Tulare
Mineral King
Comment
RSA128605
Allium crispum
J. T. Howell
1957-4-29
32102
Fresno
East of Priest Valley in western Fresno County.
747
Comment
CAS-BOT-BC469032
Allium falcifolium
John Thomas Howell
1931-4-3
6140
Napa
Pope Creek Canyon, 5.5 miles east of Pope Valley, Napa Range
Comment
RSA26408
Allium falcifolium
J. T. Howell
1941-4-6
16179
Contra Costa
Ridge east of Deer Park, Mt. Diablo
Comment
CAS-BOT-BC472774
Allium praecox
John Thomas Howell
1931-4-11
6266
Santa Barbara
Near Valley Anchorage, Santa Cruz Island
Comment
SEINET12044784
Allium serratum
J. T. Howell
1933-1
11284
Contra Costa
E of St. Mary's College
Comment
RSA127054
Allium triquetrum
J. T. Howell
1950-4-23
26309
Marin
Along Summit Ave. Mill Valley.
Comment
UC1106277
Allium triquetrum
John Thomas Howell
1950-4-23
26309
Marin
along Summit Ave. Mill Valley, Summit Ave.
Comment
CAS-BOT-BC478113
Allium validum
John Thomas Howell; Gordon H. True
1966-7-13
41948
Tulare
Pipe Spring on Cherry Hill Road
2377
Comment
CAS-BOT-BC478114
Allium validum
John Thomas Howell; Gordon H. True
1969-8-28
46012
Tulare
Mineral King
2377
Comment
CAS-BOT-BC170937
Alnus rhombifolia
John Thomas Howell
1958-7-22
33759
Fresno
Simpson Meadow, Middle Fork of the Kings River, Sierra Nevada
1828
Comment
CAS-BOT-BC138157
Alopecurus aequalis var. aequalis
John Thomas Howell
1943-7-19
18586
Placer
Summit Valley.
Comment
CAS-BOT-BC138162
Alopecurus aequalis var. aequalis
John Thomas Howell
1975-7-23
51388
Lassen
Sierra Nevada. Susanville.
1295
Comment
CAS-BOT-BC138051
Alopecurus aequalis var. sonomensis
John Thomas Howell
1945-5-30
20899
Sonoma
Pitkin Marsh.
Comment
CAS-BOT-BC137961
Alopecurus saccatus
John Thomas Howell
1965-4-25
41082
Madera
7 miles northeast of Madera.
Comment
UC1177021
Alopecurus saccatus
John Thomas Howell
1946-5-4
21702
Marin
e. of Aurora School (at Sonoma Co. line)
Comment
CAS-BOT-BC18594
Alyssum alyssoides
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-28
53369
Siskiyou
Grenada, near the railroad station.
792
Comment
RSA127364
Amaranthus californicus
J. T. Howell
1946-9-8
22998
Marin
Lake Lagunitas, Mount Tamalpais
Comment
JEPS17299
Amblyopappus pusillus
J. Thomas Howell
1928-5-19
3815
Ventura
near n end of Anacapa Island
Comment
CAS-BOT-BC13658
Ambrosia acanthicarpa
John Thomas Howell
1967-11-3
44064
Tulare
About 4.5 miles ENE of Pixley.
83
Comment
CAS-BOT-BC61483
Ambrosia chamissonis
John Thomas Howell
1929-10-12
4483
San Luis Obispo
Ocean Beach, 9 miles n. of Morro
Comment
CAS-BOT-BC55608
Ambrosia confertiflora
John Thomas Howell
1956-7-15
s.n.
San Francisco
Waterfront Street
Comment
CAS-BOT-BC45020
Ambrosia psilostachya
John Thomas Howell
1926-9-9
2189
Marin
San Rafael
Comment
CAS-BOT-BC273011
Ambrosia salsola
John Thomas Howell
1928-1-28
3285
Riverside
Thousand Palms, Colorado Desert
Comment
CAS-BOT-BC135650
Amelanchier utahensis
John Thomas Howell
1937-7-21
13230
Trinity
Big Flat
Comment
CAS-BOT-BC217100
Amelanchier utahensis
John Thomas Howell
1934-6-12
12040
Modoc
N side of Fandango Valley.
Comment
SD134063
Amphiscirpus nevadensis
John Thomas Howell
1964-10-24
41002
Mono
Saline strand of Mono Lake near Lee Vining.
2073
Comment
CAS-BOT-BC222231
Amsinckia
John Thomas Howell
1933-3-29
10916
Contra Costa
Pittsburg
Comment
CAS-BOT-BC222254
Amsinckia
John Thomas Howell
1934-6-16
12220
Lassen
Big Valley, 4 miles ne. of Bieber
Comment
CAS-BOT-BC222287
Amsinckia
John Thomas Howell
1934-3-25
11776
Sonoma
Lakeville
Comment
CAS-BOT-BC54198
Amsinckia menziesii
John Thomas Howell
1934-6-16
12211
Modoc
Parker Creek, Warner Mountains
1584
Comment
UC702995
Amsinckia menziesii var. menziesii
John Thomas Howell
1941-4-5
16170
Napa
about 1 mi sw Calistoga
Comment
CAS-BOT-BC45152
Anaphalis margaritacea
John Thomas Howell
1939-7-2
14835
Marin
Pirates Cove
Comment
CAS-BOT-BC128554
Androsace septentrionalis
John Thomas Howell
1950-7-22
27236
Tulare
Summit ridge, Olancha Peak
3698
Comment
CAS-BOT-BC391748
Anemone
John Thomas Howell
1943-7-20
18626
Nevada
Castle Peak
Comment
SEINET12087307
Anemone deltoidea
J. T. Howell
1939-1
14927
Siskiyou
Marble Mountains, Spirit Lake
Comment
CDA39498
Anemopsis californica
J. T. Howell
1970-11-9
47547
Kern
Sierra Nevada; South Fork Valley, Weldon.
Comment
CAS-BOT-BC45310
Anisocoma acaulis
John Thomas Howell
1958-5-25
33351
Inyo
Carroll Creek
1676
Comment
CAS-BOT-BC59166
Antennaria dimorpha
John Thomas Howell; Gordon H. True
1970-6-26
46834
Tulare
True Meadow
2225
Comment
CAS-BOT-BC69162
Antennaria dimorpha
John Thomas Howell
1928-5-26
3852
Ventura
Mt. Pinos near summit
2682
Comment
CAS-BOT-BC77204
Antennaria microphylla
John Thomas Howell
1946-7-14
22338
Inyo
Rock Creek Lake Basin. Mosquito Flat.
3139
Comment
CAS-BOT-BC77242
Antennaria microphylla
John Thomas Howell
1947-8-5
23795
Inyo
Big Pine Lakes. Fifth Lake.
3352
Comment
CAS-BOT-BC77261
Antennaria microphylla
John Thomas Howell
1958-7-22
33733
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC79903
Antennaria microphylla
John Thomas Howell
1937-7-21
13177
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC79927
Antennaria microphylla
John Thomas Howell
1951-6-28
27718
Plumas
Eureka Peak
2255
Comment
CAS-BOT-BC86950
Antennaria pulchella
John Thomas Howell
1942-7-31
17481
Tulare
Mt. Kaweah
Comment
CAS-BOT-BC86971
Antennaria pulchella
John Thomas Howell
1947-7-25
23672
San Bernardino
San Bernardino Mts., Mt. San Gorgonio
3505
Comment
CAS-BOT-BC84774
Antennaria umbrinella
John Thomas Howell
1948-7-22
24862
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
SEINET13943423
Anthriscus neglecta
John Thomas Howell
1962-1
37092
Stanislaus
San Joaquin River bridge W of Modesto
Comment
CAS-BOT-BC457536
Aphanes occidentalis
John Thomas Howell
1957-4-28
32063
Monterey
Santa Lucia Mountains; roadside depression 1.6 miles N.W. of summit of Jamesburg road.
640
Comment
CAS-BOT-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
CAS-BOT-BC392137
Aquilegia formosa
John Thomas Howell
1958-7-23
33811
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC395160
Aquilegia formosa
John Thomas Howell
1949-8-3
25972
Tulare
Rock Creek
3291
Comment
CAS-BOT-BC397888
Aquilegia formosa
John Thomas Howell
1960-7-21
35850
Plumas
Stream bank nw of Willow Lake
1676
Comment
CAS-BOT-BC405922
Aquilegia pubescens
John Thomas Howell
1941-8-9
16894
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC17274
Arabis blepharophylla
John Thomas Howell
1946-5-19
21926
Marin
Saddle between Big and Little Carson Canyons.
Comment
RSA88489
Arabis holboellii var. pinetorum
J. T. Howell
1951-7-19
27949
Tulare
Monarch Lakes Trail. Mineral King and vicinity.
2439
Comment
UC1042594
Arceuthobium americanum
John Thomas Howell
1950-7-18
27038
Tulare
Bakeoven Meadows Sierra Nevada
2468
Comment
CAS-BOT-BC407688
Arceuthobium americanum
J. T. Howell
1977-8-2
52463
Calaveras
just east of Big Meadow on Ebbets Pass Road
1996
Comment
UCD101928
Arceuthobium campylopodum
John Thomas Howell
1962-9-23
38805
Kern
Near Tiger Flat, Greenhorn Mountains, Sierra Nevada.
1981
Comment
CAS-BOT-BC409919
Arceuthobium campylopodum
John Thomas Howell; Gordon H. True
1967-7-11
43373
Plumas
2 miles SE of Mt. Hough
1828
Comment
CAS-BOT-BC410082
Arceuthobium occidentale
John Thomas Howell
1955-6-14
30440
Butte
near Magalia
731
Comment
CAS-BOT-BC410090
Arceuthobium occidentale
John Thomas Howell
1970-9-26
47488
Kern
near Loraine
822
Comment
A362583
Arctostaphylos
J. T. Howell
1930-7-20
5380
Unknown
Chaparral-covered slope near Phoenix Lake
Comment
RSA550549
Arctostaphylos canescens
J. T. Howell
1976-7-16
51916
Plumas
Just east of Bucks Summit on road to Meadow Valley.
1646
Comment
CAS-BOT-BC23975
Arctostaphylos canescens subsp. canescens
John Thomas Howell
1934-3-3
11747
Sonoma
Between Fort Ross and Stwearts Point
Comment
RSA193978
Arctostaphylos canescens subsp. canescens
J. T. Howell
1930-3-23
4563
Napa
Crater Country' near Mt. St. Helena.
Comment
A350167
Arctostaphylos canescens var. sonomensis
J. T. Howell
1933-4-2
10943
Unknown
Rincon Ridge, near Santa Rosa
Comment
CAS-BOT-BC23603
Arctostaphylos columbiana
John Thomas Howell
1934-3-3
11743
Sonoma
Between Fort Ross and Stewart's Point
Comment
CAS-BOT-BC23439
Arctostaphylos crustacea
John Thomas Howell
1930-4-6
4659
Santa Clara
Near summit of Mt. Hamilton on road to San Antonio Valley.
Comment
CAS-BOT-BC23533
Arctostaphylos crustacea
John Thomas Howell
1934-3-4
11773
San Francisco
Lake Merced
Comment
GH350216
Arctostaphylos crustacea
J. T. Howell
1933-3-3
10865
Unknown
San Francisco, Lake Merced
Comment
CAS-BOT-BC25142
Arctostaphylos crustacea subsp. crinita
John Thomas Howell
1933-4-9
10987
Santa Cruz
Ano Nuevo Pines, N. Santa Cruz Co.
Comment
GH350227
Arctostaphylos edmundsii
J. T. Howell
1952-3-4
28299
Unknown
Hurricane Point, just south of Little Sur River
Comment
CAS-BOT-BC23351
Arctostaphylos glandulosa subsp. cushingiana
John Thomas Howell
1944-3-26
19356
Marin
Pines west of Inverness
Comment
CAS-BOT-BC23370
Arctostaphylos glandulosa subsp. cushingiana
John Thomas Howell
1955-5-17
30158
Monterey
Summit ridge of Junipero Serra Peak, Santa Lucia Mts.
1767
Comment
CAS-BOT-BC24834
Arctostaphylos glandulosa subsp. cushingiana
John Thomas Howell
1944-3-26
19354
Marin
Inverness Ridge west of Inverness
Comment
CAS-BOT-BC23121
Arctostaphylos glandulosa subsp. glandulosa
John Thomas Howell
1931-5-30
6610
Riverside
Santiago Peak, Santa ana Mts.
Comment
CAS-BOT-BC23130
Arctostaphylos glandulosa subsp. glandulosa
John Thomas Howell
1954-3-18
29130
Monterey
Exposed sandstone ridge, Hastings Reservation, Santa Lucia Mts.
Comment
CAS-BOT-BC24725
Arctostaphylos glandulosa subsp. glandulosa
John Thomas Howell
1931-3-14
5763
Sonoma
Raven Ridge near Santa Rosa.
Comment
CAS-BOT-BC46107
Arctostaphylos glandulosa subsp. howellii
John Thomas Howell
1930-10-25
5684
Monterey
Chaparral, canyon of the Arroyo Seco River, Santa Lucia Mts.
Comment
RSA136765
Arctostaphylos glandulosa var. howellii
J. T. Howell
1955-7-7
30542
Monterey
On summit ridge of junipero Serra Peak.
1768
Comment
CAS-BOT-BC27254
Arctostaphylos jepsonii
John Thomas Howell
1931-6-8
6683
Mariposa
Just S of summit of Chowchilla Mt.
Comment
A350546
Arctostaphylos manzanita
J. T. Howell
1933-4-2
10952
Unknown
Serpentine Ridge, 2 miles east of Occidental
Comment
A350619
Arctostaphylos manzanita
J. T. Howell
1943-8-2
18909
Unknown
Just west of Alder Springs Ranger Station
1341
Comment
CAS-BOT-BC38918
Arctostaphylos manzanita subsp. elegans
John Thomas Howell
1930-7-13
5354
Napa
Chaparral on the edge of the Crater Country
Comment
CAS-BOT-BC38971
Arctostaphylos manzanita subsp. elegans
John Thomas Howell
1931-4-4
6157
Lake
St. Helena Creek Canyon, 4 miles south of Middletown
Comment
CAS-BOT-BC24340
Arctostaphylos manzanita subsp. manzanita
John Thomas Howell
1976-4-28
51616
Mendocino
At Eel River bridge n. of Potter Valley.
457
Comment
CAS-BOT-BC38656
Arctostaphylos manzanita subsp. manzanita
John Thomas Howell
1926-6-13
2018
Stanislaus
Knight's Ferry
76
Comment
CAS-BOT-BC38882
Arctostaphylos manzanita subsp. manzanita
J. T. Howell
1931-3-14
5772
Sonoma
Vine Hill District, 10 miles west of Santa Rosa.
Comment
CAS-BOT-BC38486
Arctostaphylos mewukka subsp. truei
John Thomas Howell
1966-7-26
42005
Plumas
Injun Jim Campground at confluence of Granite Creek and North Fork of Feather River.
609
Comment
CAS-BOT-BC38529
Arctostaphylos mewukka subsp. truei
John Thomas Howell
1975-6-15
51110
Butte
Paradise. Skyway just ne. of Billie Rd.
609
Comment
CAS-BOT-BC38615
Arctostaphylos mewukka subsp. truei
John Thomas Howell
1959-9-21
34779
Plumas
N. Fork Feather River near Belden
701
Comment
CAS-BOT-BC40140
Arctostaphylos montereyensis
John Thomas Howell
1965-6-15
41364
Monterey
Near the Monterey Airport on Salinas road about 4 miles east of Monterey.
Comment
CAS-BOT-BC45618
Arctostaphylos montereyensis
John Thomas Howell
1965-6-15
41363
Monterey
Near Monterey Airport on Salinas rd. abou 4 mi. e. of Monterey.
Comment
CAS-BOT-BC45460
Arctostaphylos nevadensis
John Thomas Howell; Gordon H. True
1968-6-9
44520
Nevada
South of Donner Summit near Norden.
2194
Comment
CAS-BOT-BC45915
Arctostaphylos nevadensis
John Thomas Howell
1958-8-14
34406
Madera
Near Isberg Lake
2987
Comment
SEINET11977804
Arctostaphylos nevadensis
T. J. Howell
1880-1
s.n.
Unknown
Mount Hood
Comment
CAS-BOT-BC44461
Arctostaphylos patula
John Thomas Howell; Gordon H. True
1967-7-4
42994
Tulare
2 miles south of Troy Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC46664
Arctostaphylos patula
John Thomas Howell
1925-5-29
1112
El Dorado
Emerald Bay Camp, Lake Tahoe.
1889
Comment
GH362263
Arctostaphylos tomentosa
J. T. Howell
1933-4-9
10987
Unknown
Ano Nuevo pines
Comment
CAS-BOT-BC43953
Arctostaphylos tomentosa subsp. tomentosa
John Thomas Howell
1966-4-14
41481
Monterey
Deer Flat Park, Monterey
Comment
GH362173
Arctostaphylos truei
J. T. Howell
1976-4-2
51571
Unknown
Injun Jim Campground, North Feather River
609
Comment
UCD51944
Arctostaphylos truei
John Thomas Howell
1975-6-15
51094
Butte
In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County.
396
Comment
POM273095
Arctostaphylos virgata
J. T. Howell
1947-1-12
s.n.
Marin
Above Muir Woods, south side of Mt. Tamalpais.
Comment
UCD52812
Arctostaphylos viscida
John Thomas Howell; Lowell Ahart
1976-4-1
51540
Butte
In foothill woodland south of Cherokee on road to Oregon City, Butte Co.
Comment
CAS-BOT-BC46905
Arctostaphylos viscida subsp. mariposa
John Thomas Howell
1930-5-14
5071
Kern
east slope of the Greenhorn Range
1493
Comment
CAS-BOT-BC47138
Arctostaphylos viscida subsp. mariposa
John Thomas Howell
1931-2-23
5753
Mariposa
On rim of Merced River Canyon, 1 mi. from Bear Valley on road to Bagby.
Comment
CAS-BOT-BC47378
Arctostaphylos viscida subsp. viscida
John Thomas Howell
1975-6-15
51098
Butte
about 2 miles from Paradise on Skyway to Chico
396
Comment
CAS-BOT-BC48210
Arctostaphylos viscida subsp. viscida
John Thomas Howell; Catherine Best
1983-4-19
54716
Tulare
Kern River Canyon - Limestone Campground above Road's End.
1097
Comment
CAS-BOT-BC48237
Arctostaphylos viscida subsp. viscida
John Thomas Howell
1931-10-31
8166
El Dorado
American Flat
Comment
CAS-BOT-BC48270
Arctostaphylos viscida subsp. viscida
John Thomas Howell
1930-5-14
5081
Kern
East slope of the Greenhorn Range
1600
Comment
CAS-BOT-BC384755
Arenaria serpyllifolia var. serpyllifolia
John Thomas Howell
1937-7-23
13351
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC401638
Argemone munita subsp. argentea
John Thomas Howell; Gordon H. True
1966-7-10
41601
Tulare
Kern River Canyon at Roads End
1066
Comment
CAS-BOT-BC401787
Argemone munita subsp. rotundata
John Thomas Howell
1973-7-10
49789
Lassen
3 miles west of Susanville
1371
Comment
CAS-BOT-BC82643
Arnica lanceolata subsp. prima
John Thomas Howell
1942-7-24
17066
Tulare
Mineral King
Comment
POM303630
Arnica mollis
J. T. Howell
1943-7-20
18596
Nevada
Willow Valley just west of Castle Peak
Comment
RSA54119
Arnica parryi subsp. sonnei
J. T. Howell
1946-8-31
22933
El Dorado
Gilmore Lake.
2561
Comment
CAS-BOT-BC85004
Artemisia arbuscula subsp. arbuscula
John Thomas Howell
1934-7-6
12455
Lassen
Harvey Valley
Comment
CAS-BOT-BC90249
Artemisia californica
John Thomas Howell
1927-10-8
3136
Ventura
near pt. Mugu
Comment
CAS-BOT-BC90258
Artemisia douglasiana
John Thomas Howell
1930-9-28
5514
San Joaquin
Holt
Comment
CAS-BOT-BC90416
Artemisia douglasiana
John Thomas Howell; Gordon H. True; Walter Knight; Irja Knight
1967-7-10
2217
Plumas
Mouth of Butterfly Creek
883
Comment
CAS-BOT-BC93967
Artemisia douglasiana
John Thomas Howell
1936-8-24
12759
Trinity
Summit of Scott Mts. n. of Carrville
Comment
CAS-BOT-BC90571
Artemisia dracunculus
John Thomas Howell
1977-8-11
52668
Plumas
Canyon of Little Last Chance Creek between Chilcoot and Frenchmans Reservoir
1676
Comment
CAS-BOT-BC90665
Artemisia ludoviciana subsp. incompta
John Thomas Howell
1947-8-5
23796
Inyo
Fifth Lake, Big Pine Lakes
3352
Comment
CAS-BOT-BC90737
Artemisia ludoviciana subsp. incompta
John Thomas Howell
1950-7-24
27273
Tulare
Monache Creek S. Fk.
2743
Comment
CAS-BOT-BC97183
Artemisia rothrockii
John Thomas Howell
1950-7-15
26898
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
UC1042365
Artemisia tridentata
John Thomas Howell
1950-11-9
27484
Los Angeles
valley flat 3 mi sw Newhall
Comment
CAS-BOT-BC447708
Aruncus dioicus var. vulgaris
John Thomas Howell
1939-8-8
15137
Siskiyou
Between Sky High Valley and Marble Valley, Marble Mts.
Comment
CAS-BOT-BC400497
Asarum caudatum
John Thomas Howell
1925-3-1
767
Alameda
San Leandro Canon [Canyon], Oakland Hills
Comment
CAS-BOT-BC478539
Asparagus officinalis
John Thomas Howell
1963-8-6
40062
Monterey
King City
Comment
CAS-BOT-BC478835
Asparagus officinalis
John Thomas Howell
1971-6-25
48119
Merced
On Merced-Gustine road 1 mile south of Stevinson
27
Comment
UCD138669
Asparagus officinalis subsp. officinalis
John Thomas Howell
1960-5-1
35218
Stanislaus
Oakdale.
Comment
CAS-BOT-BC65775
Aspidotis californica
John Thomas Howell
1930-3-29
4602
San Benito
the Pinnacles
Comment
RSA782
Aster subulatus var. ligulatus
J. T. Howell
1927-10-29
775
Orange
Bryant Ranch near Long Beach.
15
Comment
CAS-BOT-BC177436
Astragalus andersonii
John Thomas Howell
1962-6-19
37890
Lassen
3 miles south of Hallelujah Junction
1524
Comment
RSA108608
Astragalus bolanderi
J. T. Howell
1942-8-8
17858
Tulare
South side Farewell Gap.
Comment
RSA415822
Astragalus gambelianus
J. T. Howell
1931-4-19
6433
Sonoma
Spring Mountain Road, 7.5 miles from St. Helena.
Comment
UCD104786
Astragalus gambelianus
John Thomas Howell
1965-4-25
41063
Madera
5 miles northeast of Madera.
Comment
CAS-BOT-BC187154
Astragalus lentiginosus var. chartaceus
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49230
Lassen
On Highway 395, 7 miles southeast of Milford
1280
Comment
RSA383
Astragalus lentiginosus var. sierrae
J. T. Howell
1927-6-10
368
San Bernardino
Big Bear, San Bernardino Mts.
2042
Comment
CAS-BOT-BC27682
Astragalus monoensis
John Thomas Howell
1938-8-10
14500
Mono
Near Crestview
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
CAS-BOT-BC186566
Astragalus nuttallii var. virgatus
John Thomas Howell
1946-5-16
21868
Marin
Angel Island, se. side
Comment
CAS-BOT-BC193069
Astragalus purshii var. tinctus
John Thomas Howell
1928-5-26
3834
Ventura
Chula Vista Camp, Mt. Pinos
Comment
SEINET10775829
Astragalus pycnostachyus
John Thomas Howell
1945-6-30
Howell 21253
Marin
Stinson Beach.
Comment
CAS-BOT-BC194018
Astragalus trichopodus var. lonchus
John Thomas Howell
1931-4-11
6260
Santa Barbara
Near Valley Anchorage, Santa Cruz Island
Comment
RSA380
Astragalus trichopodus var. lonchus
J. T. Howell
1928-2-7
815
Orange
Botany Garden, Rancho Santa Ana.
152
Comment
CAS-BOT-BC17606
Athysanus pusillus
John Thomas Howell; Gordon H. True
1968-5-12
44215
Tulare
Sierra Nevada. Kern Plateau. Brush Creek Canyon.
1402
Comment
CAS-BOT-BC168629
Atriplex
John Thomas Howell; Gordon H. True
1967-9-21
44001
Tulare
About 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC170196
Atriplex canescens subsp. canescens
John Thomas Howell
1927-10-22
3162
Orange
In hills on n. side of Santa Ana Canyon.
152
Comment
CAS-BOT-BC168531
Atriplex confertifolia
John Thomas Howell
1930-6-28
5324
San Joaquin
Banta Junction, about 1 mile from Banta
Comment
CAS-BOT-BC168587
Atriplex cordulata
John Thomas Howell
1967-11-4
44080
Tulare
About 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC168599
Atriplex cordulata
John Thomas Howell; Gordon H. True
1967-9-21
44007
Tulare
About 4 1/2 miles east-northeast of Pixley
83
Comment
UCD97408
Atriplex fruticulosa
John Thomas Howell
1972-6-29
48917
Contra Costa
on Bron Hot Springs Road southeast of Byron.
Comment
CAS-BOT-BC168461
Atriplex parishii var. subtilis
John Thomas Howell; Gordon H. True
1967-8-10
43723
Tulare
About 4 1/2 miles east-northeast of Pixley. From northern 1/3 and central areas
83
Comment
CAS-BOT-BC244848
Atriplex pusilla
John Thomas Howell
1938-8-8
14381
Mono
Long Valley
Comment
CAS-BOT-BC176620
Atriplex serenana var. serenana
John Thomas Howell
1963-8-20
40113
Kern
South Fork Valley about 2 miles northeast of Weldon
807
Comment
CAS-BOT-BC176754
Atriplex serenana var. serenana
John Thomas Howell
1927-7-5
2650
Orange
Along road, Santa Ana River bottom, Santa Ana [Canon] Canyon
152
Comment
RSA215969
Atriplex subspicata
J. T. Howell
1956-9-29
31889
San Francisco
Golden Gate Park east of Academy buildings, San Francisco.
Comment
POM251773
Atriplex truncata
J. T. Howell
1938-8-8
14391
Mono
Long Valley
Comment
RSA22195
Atriplex truncata
J. T. Howell
1938-8-8
14394
Mono
Long Valley
Comment
UCD97851
Atriplex truncata
John Thomas Howell
1959-9-25
35017
Plumas
5 miles east of Beckwourth, Sierra Valley.
1493
Comment
SEINET11690141
Avena barbata
J. T. Howell, Knight, W.; Knight, I.
1987-1
6231
Sonoma
Todd Road Preserve
24
Comment
CAS-BOT-BC145884
Avena fatua
John Thomas Howell
1962-6-15
37530
Butte
Sierra Nevada. Magalia.
731
Comment
CAS-BOT-BC145948
Avena fatua
John Thomas Howell
1964-4-26
40457
Mariposa
Sierra Nevada. Just southeast of Mariposa on the road to Morman Bar.
594
Comment
CAS-BOT-BC145735
Avena sativa
John Thomas Howell
1964-6-29
40786
San Luis Obispo
Cambria.
Comment
CAS-BOT-BC68356
Azolla filiculoides
John Thomas Howell
1963-6-21
39441
Monterey
Along Highway US 101, Prunedale
Comment
CAS-BOT-BC66241
Azolla mexicana
John Thomas Howell
1959-9-21
34825
Plumas
Crescent Mills
1066
Comment
RSA215927
Baccharis pilularis
J. T. Howell
1957-6-11
32589
San Francisco
North slope of Lone Mountain
Comment Read comments Dec 21 2011
JEPS21280
Baccharis salicina
John Thomas Howell
1927-10-22
3166
Orange
Rancho Santa Ana Santa Ana River bottom
152
Comment
CAS-BOT-BC100039
Balsamorhiza deltoidea
John Thomas Howell; Gordon True; Walter Knight; Irja Knight
1968-6-11
2367
Plumas
Butterfly Botanical Area. Confluence of Spanish Creek & Butterfly Creek
Comment
CAS-BOT-BC16466
Barbarea orthoceras
John Thomas Howell
1923-6-22
75
Mariposa
Stella Lake, Wawona.
1219
Comment
CAS-BOT-BC16561
Barbarea orthoceras
John Thomas Howell
1967-6-23
42684
Plumas
Sierra Nevada. Canyon of Butterfly Creek.
1036
Comment
JEPS59811
Bassia hyssopifolia
J. T. Howell
1926-6-20
2042
Merced
6 mi ne Los Banos; ne <of> Los Banos
Comment
CAS-BOT-BC106422
Bebbia juncea var. aspera
John Thomas Howell
1928-4-1
3613
Inyo
4 miles s. of Bradbury Well, Black Mts.
Comment
CAS-BOT-BC145813
Beckmannia syzigachne
John Thomas Howell
1961-9-23
36848
Plumas
Sierra Nevada. Indian Valley.
1082
Comment
CAS-BOT-BC145814
Beckmannia syzigachne
John Thomas Howell
1961-9-25
36938
Plumas
Sierra Nevada. Feather River bed, Portola.
1478
Comment
CAS-BOT-BC100238
Benitoa occidentalis
John Thomas Howell
1933-8-17
11549
San Benito
Near Hernandez
Comment
UCD95050
Berberis aquifolium var. dictyota
John Thomas Howell
1976-4-29
51622
Lake
High Valley Road E of Clear Lake.
1005
Comment
CAS-BOT-BC76004
Berberis pumila
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-29
53389
Siskiyou
Forest Mountain Summit, 6 miles southwest of Yreka on road to Fort Jones.
1249
Comment
CAS-BOT-BC102162
Bidens
John Thomas Howell
1959-9-21
34816
Plumas
Sand bars of Indian Creek
914
Comment
CAS-BOT-BC102076
Bidens cernua
John Thomas Howell
1951-8-20
28204
Plumas
Indian Valley
1066
Comment
CAS-BOT-BC413085
Bistorta bistortoides
John Thomas Howell
1960-8-21
36299
Tehama
Near Lassen Volcanic National Park. Bluff Falls
1981
Comment
CAS-BOT-BC413096
Bistorta bistortoides
John Thomas Howell; Gordon H. True
1970-7-30
47155
Tulare
Southwest end of Big Meadow just east of Cherry Hill Road. Kern Plateau
2377
Comment
CAS-BOT-BC27856
Blennosperma nanum var. robustum
John Thomas Howell
1947-5-14
23153
Marin
Pt. Reyes Peninsula above McClure Beach
Comment
SEINET3859610
Blennosperma nanum var. robustum
John Thomas Howell
1947-5-14
23153
Marin
Point Reyes Peninsula above McClure Beach.; 0
Comment
CAS-BOT-BC100329
Blepharizonia plumosa
John Thomas Howell
1932-10-16
10839
Alameda
1.5 miles west of Tesla
Comment
CAS-BOT-BC15799
Boechera acutina
John Thomas Howell
1937-7-26
13551
Siskiyou
Caribou Gulch.
Comment
CAS-BOT-BC15875
Boechera arcuata
John Thomas Howell
1964-4-27
40515
Mariposa
Sierra Nevada. El Portal.
640
Comment
CAS-BOT-BC16280
Boechera howellii
John Thomas Howell
1960-7-20
35758
Plumas
Lassen Volcanic National Park. Boiling Springs Lake.
1798
Comment
CAS-BOT-BC16296
Boechera howellii
John Thomas Howell
1946-7-20
22593
Fresno
Unglaciated ridge south of Mono Rock.
3596
Comment
CAS-BOT-BC16324
Boechera howellii
John Thomas Howell
1946-7-26
22733
Inyo
Mono Mesa.
3657
Comment
CAS-BOT-BC13924
Boechera lemmonii
John Thomas Howell
1947-8-10
23975
Inyo
Big Pine Lakes. Near Sam Mack Lake.
3657
Comment
CAS-BOT-BC14080
Boechera pauciflora
John Thomas Howell
1948-7-29
25148
Fresno
Bubbs Creek Canyon in vicinity of Vidette Medows.
3048
Comment
CAS-BOT-BC14362
Boechera platysperma
John Thomas Howell
1941-7-31
16581
Madera
Agnew Pass.
Comment
CAS-BOT-BC14420
Boechera platysperma
John Thomas Howell
1960-8-18
36093
Tehama
Lassen Volcanic National Park. Sulphur Works Entrance Station.
2011
Comment
CAS-BOT-BC14554
Boechera pulchra
John Thomas Howell
1958-5-26
33440
Inyo
Sierra Nevada. Onion Valley road.
2072
Comment
CAS-BOT-BC14619
Boechera pygmaea
John Thomas Howell
1949-7-22
25570
Tulare
Rock Creek.
3169
Comment
CAS-BOT-BC14679
Boechera rectissima
John Thomas Howell; Gordon H. True
1970-6-25
46793
Tulare
Sierra Nevada. Kern Plateau. East branch of Salmon Creek, Big Meadow to Sirretta Meadows.
2590
Comment
CAS-BOT-BC25412
Boechera retrofracta
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54188
Plumas
Sierra Nevada. Rush Creek.
1402
Comment
CAS-BOT-BC25763
Boechera stricta
John Thomas Howell
1940-7-31
15757
Tulare
East Lake.
2926
Comment
CAS-BOT-BC25900
Boechera suffrutescens
John Thomas Howell
1934-7-10
12537
Lassen
Between Harvey Valley and Patterson Flats.
Comment
RSA512853
Boisduvalia glabella
J. T. Howell
1961-9-24
36903
Plumas
Sierra Nevada: Feather River bed southwest of Beckworth.
1488
Comment
CAS-BOT-BC28248
Bolboschoenus glaucus
John Thomas Howell
1955-9-6
30906
Glenn
Low wet place along road, 3 mi W of Butte City.
Comment
CAS-BOT-BC145418
Brachypodium distachyon
John Thomas Howell
1949-6-7
25340
Marin
Chileno Valley.
Comment
CAS-BOT-BC145423
Brachypodium distachyon
John Thomas Howell
1948-5-31
24327
Marin
Common Devils Gulch near Camp Taylor.
Comment
CAS-BOT-BC36779
Brassica rapa
John Thomas Howell
1956-6-17
31585
San Francisco
San Francisco. Summit ridge of Bayview Hills.
Comment
CAS-BOT-BC100490
Brickellia californica
John Thomas Howell
1973-10-31
50272
Tulare
Middle Fork of Kaweah River
609
Comment
CAS-BOT-BC106280
Brickellia californica
John Thomas Howell
1940-8-11
16147
Fresno
Kings River Canyon at Horseshoe Bend
Comment
CAS-BOT-BC100509
Brickellia californica
John Thomas Howell
1973-11-2
50318
Ventura
just north of Pine Mt. Summit on Maricopa Road
1371
Comment
CAS-BOT-BC127692
Brickellia greenei
John Thomas Howell
1936-8-26
12832
Trinity
Trinity River canyon near Eagle Creek
Comment
CAS-BOT-BC134098
Brickellia microphylla var. microphylla
John Thomas Howell; Gordon H. True
1969-5-14
45765
Tulare
Marble outcrop on wall of Kern River Canyon east of Limestone Forest Service camp
1127
Comment
POM204032
Briza minor
J. T. Howell
1934-3-25
367
Sonoma
Petaluma
Comment
SEINET10533793
Brodiaea elegans
John Thomas Howell
1943-8-4
Howell 19049
Glenn
Summit ridge north of Black Butte, Calif.
Comment
CAS-BOT-BC484559
Brodiaea minor
John Thomas Howell
1962-6-15
37456
Butte
Magalia
731
Comment
CAS-BOT-BC484560
Brodiaea minor
John Thomas Howell
1955-6-14
30437
Butte
Magalia
731
Comment
CAS-BOT-BC484593
Brodiaea purdyi
John Thomas Howell
1955-7-20
30866
Plumas
Mohawk
1371
Comment
UCD57606
Bromus arenarius
John Thomas Howell
1962-7-8
38324
Kern
Greenhorn Mountains. Sierra Nevada. 1.5 miles southeast of Summit.
1524
Comment
CAS-BOT-BC144292
Bromus arizonicus
John Thomas Howell
1967-4-7
42060
Kern
Mojave.
838
Comment
RSA118079
Bromus carinatus
J. T. Howell
1955-5-20
30210
Monterey
Soledad
Comment
CAS-BOT-BC149208
Bromus carinatus var. carinatus
John Thomas Howell
1944-5-21
19489
Marin
Mount Tamalpais. West end of Phoenix Lake.
Comment
CAS-BOT-BC149236
Bromus carinatus var. carinatus
John Thomas Howell
1929-5-26
4239
Mendocino
Open of Mendocino coastal plain, Fort Bragg.
15
Comment
CAS-BOT-BC149318
Bromus carinatus var. carinatus
John Thomas Howell
1973-7-10
49751
Plumas
Sierra Nevada. Near Greenville.
1097
Comment
CAS-BOT-BC149324
Bromus carinatus var. carinatus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-25
54305
Plumas
Sierra Nevada. East side of Indian Valley just north of Taylorsville.
1112
Comment
CAS-BOT-BC148414
Bromus carinatus var. marginatus
John Thomas Howell
1944-8-5
19956
Tuolumne
Tuolumne Meadows. Near Parsons Lodge.
Comment
CAS-BOT-BC148824
Bromus carinatus var. marginatus
John Thomas Howell; Gordon H. True
1970-7-28
46949
Tulare
Sierra Nevada. Kern Plateau. West side of Big Meadow just south of Pipe Spring.
2377
Comment
CAS-BOT-BC148847
Bromus carinatus var. marginatus
John Thomas Howell
1960-8-18
36095
Tehama
Lassen Volcanic National Park. Sulphur Works Checking Station.
2011
Comment
CAS-BOT-BC148915
Bromus carinatus var. marginatus
John Thomas Howell
1958-8-14
34443
Madera
Sierra Nevada. Northeast of Sadler Lake. East Fork of Granite Creek.
3200
Comment
UCD59113
Bromus carinatus var. marginatus
John Thomas Howell
1960-7-23
35932
Plumas
Lassen Volcanic National Park. Drakesbad.
1676
Comment
CAS-BOT-BC156190
Bromus catharticus
John Thomas Howell
1956-4-28
31299
San Francisco
San Francisco. Lake Merced.
Comment
CAS-BOT-BC156243
Bromus catharticus
John Thomas Howell
1967-4-7
42061
Kern
Mojave.
838
Comment
CAS-BOT-BC156244
Bromus catharticus
John Thomas Howell
1957-6-24
32709
Kern
Tehachapi.
1209
Comment
CAS-BOT-BC156258
Bromus catharticus
John Thomas Howell
1957-6-24
32742
Inyo
Near Roadside drinking fountain, 10 miles south of Olancha.
Comment
CAS-BOT-BC156285
Bromus catharticus
John Thomas Howell
1964-4-29
40658
Mariposa
Sierra Nevada. Mariposa.
609
Comment
RSA137130
Bromus catharticus
J. T. Howell
1957-6-24
32709
Kern
Tehachapi
1210
Comment
UCD58383
Bromus catharticus
John Thomas Howell
1956-3-11
30923
Orange
Yorba Linda.
Comment
UCD58390
Bromus catharticus
John Thomas Howell
1956-3-10
30919
Ventura
Ventura. Thompson Blvd. and Chrisman Ave.
Comment
CAS-BOT-BC155798
Bromus diandrus
John Thomas Howell; Gordon H. True
1968-6-10
44547
Plumas
Sierra Nevada. Quincy.
1036
Comment
CAS-BOT-BC156001
Bromus diandrus
John Thomas Howell
1962-6-17
37689
Plumas
Sierra Nevada. Butterfly Valley.
1036
Comment
CAS-BOT-BC156059
Bromus diandrus
John Thomas Howell
1958-7-26
33965
Fresno
Sierra Nevada. Tehipite Valley, Middle Fork of the Kings RIver.
1280
Comment
CAS-BOT-BC156032
Bromus diandrus
John Thomas Howell
1957-4-13
32021
Alameda
Livermore.
Comment
CAS-BOT-BC155604
Bromus grandis
John Thomas Howell
1960-6-6
35330
Fresno
Sierra Nevada. Kings Canyon Road 4.3 miles west of Horseshoe Boulevard.
1097
Comment
CAS-BOT-BC155535
Bromus hallii
John Thomas Howell; Gordon H. True
1970-6-22
46599
Kern
Sierra Nevada. 1.5 mile west of Greenhorn Summit on road to Glenville.
1584
Comment
CAS-BOT-BC155540
Bromus hallii
John Thomas Howell
1940-8-9
16079
Fresno
Between Vidette Meadow and Bullfrog Lake.
Comment
CAS-BOT-BC155211
Bromus hordeaceus
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
53969
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on the west slope of Sonoma Mountain.
457
Comment
CAS-BOT-BC155465
Bromus hordeaceus
John Thomas Howell
1969-4-21
45525
Amador
Sierra Nevada. Jackson.
365
Comment
CAS-BOT-BC155346
Bromus japonicus
John Thomas Howell
1977-6-24
52417
Plumas
Sierra Nevada. Near confluence of Spanish and Indian Creeks.
929
Comment
CAS-BOT-BC162275
Bromus madritensis
John Thomas Howell
1954-5-8
29214 A
Tulare
Sierra Nevada. Tule River Canyon, 5 miles above Springville.
548
Comment
CAS-BOT-BC162331
Bromus madritensis
John Thomas Howell
1944-4-16
19390
Marin
Mount Tamalpais. Corte Madera Ridge.
Comment
CAS-BOT-BC162348
Bromus madritensis
John Thomas Howell; Gordon H. True
1971-6-15
47813
Kern
Sierra Nevada. Flying Dutchman Creek canyon on Havilah Mount Breckenridge Road.
1249
Comment
SEINET891647
Bromus maritimus
John Thomas Howell
1957-1
32427
Unknown
North base of Lone Mountain, San Francisco.
Comment
CAS-BOT-BC162143
Bromus orcuttianus
John Thomas Howell
1926-7-20
2088
Plumas
Near Prattville.
1463
Comment
CAS-BOT-BC162144
Bromus orcuttianus
John Thomas Howell
1968-6-11
2368
Plumas
Sierra Nevada. Butterfly Botanical Area. Confluence of Spanish Creek & Butterfly Creeek.
883
Comment
CAS-BOT-BC162207
Bromus orcuttianus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-22
54081
Yuba
Sierra Nevada. About 2 miles northeast of Dobbins on Oregon Hill Road.
701
Comment
CAS-BOT-BC161857
Bromus rubens
John Thomas Howell
1950-6-11
26626
Marin
Mount Tamalpais. Bootjack.
Comment
CAS-BOT-BC161925
Bromus rubens
John Thomas Howell
1950-7-12
26671
Inyo
Sage Flat to Olancha Pass.
1981
Comment
RSA224272
Bromus stamineus
J. T. Howell
1956-4-22
31282
San Francisco
Embarcadero at Vallejo St.
Comment
SEINET10605894
Bromus stamineus
John Thomas Howell
1957-5-5
Howell 32170
San Francisco
22nd and Indiana waste.
Comment
CAS-BOT-BC161613
Bromus sterilis
John Thomas Howell
1962-6-15
37493
Butte
Sierra Nevada. Magalia.
731
Comment
NY664630
Bromus tectorum
J. T. Howell
1944-5-28
19514
Marin
Between Manzanita and Almonte
Comment
SBBG115908
Bromus tectorum
J. T. Howell
1960-6-8
35462
Fresno
ca. 2 mi W of Sequoia Lake
1524
Comment
RSA118081
Bromus tectorum var. glabratus
J. T. Howell
1955-5-29
30255
Marin
near Mountain Theater, Mt. Tamalpias.
Comment
UCD114951
Cakile maritima
John Thomas Howell
1943-10-3
19333
Marin
Above high tide line, Muir Beach.
Comment
CAS-BOT-BC185461
Calamagrostis canadensis
John Thomas Howell
1960-8-18
36102
Tehama
Lassen Volcanic National Park. Sulphur Works Checking Station.
2011
Comment
CAS-BOT-BC185489
Calamagrostis canadensis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-12
54528
Inyo
Sierra Nevada. Mosquito Flat Campground, Rock Creek road to Rock Creek Lake Basin.
3093
Comment
GH341548
Calamagrostis canadensis
J. T. Howell
1941-8-6
16801
Unknown
Between Shadow and Garnet lakes, Madera Co.
Comment
POM364253
Calamagrostis canadensis
J. T. Howell
1947-8-5
23775
Inyo
Fifth Lake, Big Pine Lakes.
3354
Comment
CAS-BOT-BC185243
Calamagrostis koelerioides
John Thomas Howell
1943-8-10
19270
Glenn
Black Butte.
Comment
SEINET10521058
Calamagrostis koelerioides
John Thomas Howell
1949-6-26
Howell 25352 A
Marin
First rail north of East Peak. Mt. Tamalpais.
Comment
CAS-BOT-BC185175
Calamagrostis nutkaensis
John Thomas Howell
1943-6-13
18229
Marin
Sausalito Hills.
Comment
CAS-BOT-BC185107
Calamagrostis ophitidis
John Thomas Howell
1941-5-25
16207
Marin
Arturo Trail, Mount Tamalpais.
Comment
CAS-BOT-BC185059
Calamagrostis purpurascens
John Thomas Howell
1949-8-9
26189
Tulare
Cirque Peak.
3733
Comment
CAS-BOT-BC185060
Calamagrostis purpurascens
John Thomas Howell
1942-7-31
17472
Tulare
Mount Kaweah.
3505
Comment
GH341595
Calamagrostis purpurascens
J. T. Howell
1942-8-3
17630
Unknown
Kaweah Gap
Comment
CAS-BOT-BC438462
Calandrinia ciliata
John Thomas Howell
1963-5-6
39102
Monterey
Santa Lucia Mountains. 4 miles south of King City on road to Jolon
121
Comment
CAS-BOT-BC438483
Calandrinia ciliata
John Thomas Howell
1951-6-28
27668
Plumas
Jamison Creek
1584
Comment
CAS-BOT-BC167317
California macrophylla
John Thomas Howell
1931-3-29
6026
San Benito
11 miles from Hernandez on road to San Benito
Comment
CAS-BOT-BC112306
Calliscirpus brachythrix
John Thomas Howell
1948-7-22
24871
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
UCD132882
Calocedrus decurrens
John Thomas Howell; Gordon H. True
1970-5-28
5356
Nevada
Marsh Road, north side of Harmony Ridge, ca. 5 miles east of Nevada City.
1036
Comment
RSA114
Calochortus invenustus
J. T. Howell
1927-7-10
355
San Bernardino
Big Bear, San Bernardino Mountains.
1828
Comment
CAS-BOT-BC487885
Calochortus invenustus
John Thomas Howell; Gordon H. True
1967-8-9
43651
Tulare
3 miles north of Blackrock Guard Station on Monache Jeep Trail, Kern Plateau, Sierra Nevada
2621
Comment
CAS-BOT-BC490170
Calochortus leichtlinii
John Thomas Howell
1943-7-18
18529
Nevada
Castle Peak
Comment
CAS-BOT-BC494066
Calochortus venustus
John Thomas Howell
1930-5-13
5055
Kern
Rocky wash, Kern Canyon, 7miles above Kernville
844
Comment
RSA998
Calochortus weedii
J. T. Howell
1927-8-6
589
San Diego
Near Torrey Pines, just south of Del Mar
30
Comment
CAS-BOT-BC132660
Calochortus weedii var. intermedius
John Thomas Howell
1927-7-3
2636
Orange
Claymine [Canon] Canyon, n. Santa Ana Mts.
304
Comment
RSA0000338
Calochortus weedii var. intermedius
J. T. Howell
1927-6-22
193
Orange
Botany Garden, Rancho Santa Ana.
Comment
CAS-BOT-BC273385
Calycadenia fremontii
John Thomas Howell
1969-8-4
45875
Shasta
About 9 miles northeast of Cottonwood
Comment
UC1177315
Calycadenia multiglandulosa
J. Thomas Howell
1946-6-20
22109
Marin
4 mi s Olema
Comment
GH414377
Calycadenia oppositifolia
J. T. Howell
1962-6-16
37623
Unknown
Serpentine, Nelson Bar
213
Comment
RSA794
Calycadenia tenella
J. T. Howell
1928-7-9
1074
Riverside
Head of San Juan Canyon. Elsinore Mountains
793
Comment
CAS-BOT-BC272766
Calycadenia truncata subsp. truncata
John Thomas Howell
1937-7-30
13703
Trinity
5 miles west of Junction City
Comment
CAS-BOT-BC436396
Calystegia
John Thomas Howell
1947-5-21
23192
Marin
Tiburon
Comment
CAS-BOT-BC224303
Calystegia macrostegia
John Thomas Howell
1928-5-19
3800
Ventura
Anacapa Island
Comment
CAS-BOT-BC95588
Calystegia occidentalis subsp. occidentalis
John Thomas Howell
1934-6-13
12083
Modoc
Fandango Pass.
1828
Comment
CAS-BOT-BC215885
Calystegia purpurata subsp. purpurata
John Thomas Howell
1944-5-28
19527
Marin
Between Almonte and Mill Valley
Comment
CAS-BOT-BC58638
Camelina microcarpa
John Thomas Howell
1934-6-30
12279
Modoc
Duncan Horse Camp.
1355
Comment
SEINET10463090
Campanula prenanthoides
Howell
1937-7-26
Howell 13561
Siskiyou
Between Big Flat and Caribou Gulch
Comment
CAS-BOT-BC37006
Capsella bursa-pastoris
John Thomas Howell
1958-5-29
33619
Inyo
Bishop.
1264
Comment
CAS-BOT-BC37087
Capsella bursa-pastoris
John Thomas Howell
1965-4-26
41120
Madera
Sierra Nevada. Coarsegold.
670
Comment
CAS-BOT-BC37243
Cardamine breweri
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49213
Lassen
Sierra Nevada. Elysian Valley northwest of Janesville.
1325
Comment
CAS-BOT-BC37471
Cardamine californica
John Thomas Howell
1949-4-6
25297
Marin
Low field, Ingacio.
Comment
UC117846
Cardamine californica var. sinuata
Thomas Howell
1892-4-24
1409
Del Norte
in Sequoia forests near Crescent City; near Crescent City
Comment
GH379023
Cardamine pachystigma
J. T. Howell
1951-7-21
28051
Unknown
White Chief Trail
2590
Comment
GH18922
Cardamine tenella var. covilleana
T. J. Howell
1904-6-17
30
Unknown
Siskiyou Mountains
Comment
CAS-BOT-BC281793
Carduus tenuiflorus
John Thomas Howell
1972-6-25
48898
Solano
Overlooking Carquinez Strait, W part of Benecia
Comment
CAS-BOT-BC18219
Carex
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-25
53000
Calaveras
Sierra Nevada. Dorrington.
1463
Comment
CAS-BOT-BC18287
Carex
John Thomas Howell; Gordon H. True
1973-8-1
50177
Lassen
Sierra Nevada. Diamond Range. Gold Run Creek road, south of Susanville.
1584
Comment
CAS-BOT-BC18354
Carex
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-25
54339
Plumas
Sierra Nevada. 2.8 miles north-northeast of Englemine on Diamond Mountain Road.
1341
Comment
CAS-BOT-BC18446
Carex abrupta
John Thomas Howell
1943-8-9
19225 A
Glenn
Plaskett Meadows. Meadows near ranger station.
1828
Comment
CAS-BOT-BC20320
Carex abrupta
John Thomas Howell; Gordon H. True
1971-7-14
48462 A
Tulare
Sierra Nevada. Kern Plateau. West end of Deadwood Meadow (about 1.5 mile northwest of Sirretta Peak.)
2804
Comment
CAS-BOT-BC18541
Carex abrupta
John Thomas Howell
1958-8-14
34422
Madera
Sierra Nevada. Near Isberg Lake.
2987
Comment
CAS-BOT-BC20331
Carex abrupta
John Thomas Howell
1950-7-24
272299
Tulare
Sierra Nevda. Monache Creek.
2987
Comment
CAS-BOT-BC17816
Carex amplifolia
John Thomas Howell
1946-6-30
22127
Marin
Marsh east of Rodeo Lagoon.
Comment
CAS-BOT-BC19004
Carex athrostachya
John Thomas Howell; Gordon H. True
1967-7-4
42960
Tulare
Sierra Nevada. Kern Plateau. Troy Meadow.
2377
Comment
CAS-BOT-BC19682
Carex athrostachya
John Thomas Howell
1946-6-13
22025
Marin
Chileno Valley.
Comment
CAS-BOT-BC19725
Carex athrostachya
John Thomas Howell
1951-6-27
27591
Plumas
Sierra Nevada. McRae Meadow.
1981
Comment
CAS-BOT-BC18109
Carex athrostachya
John Thomas Howell
1958-8-16
34537
Madera
Sierra Nevada. Between Knoblock Meadow and Cora Lake.
2621
Comment
CAS-BOT-BC19139
Carex aurea
John Thomas Howell
1949-7-26
25780
Tulare
Sierra Nevada. Whitney Meadows.
2956
Comment
UCD140125
Carex aurea
John Thomas Howell
1960-7-18
35508
Plumas
Lassen Volcanic National Park. Drakesbad.
1676
Comment
CAS-BOT-BC19254
Carex barbarae
John Thomas Howell
1966-4-18
41506
Marin
Tiburon. Gully just north of John Thomas Howell Botanical Garden.
Comment
CAS-BOT-BC19306
Carex barbarae
John Thomas Howell
1956-6-10
31554
San Francisco
San Francisco. North slope of Bay View Hills.
Comment
CAS-BOT-BC19379
Carex barbarae
John Thomas Howell
1978-4-16
52821
Sutter
Feather River near mouth of Bear River, Bobelaine Audubon Sanctuary.
Comment
CAS-BOT-BC19236
Carex barbarae
John Thomas Howell
1943-9-19
19329
Marin
Dry hills overlooking Escalle salt marsh.
Comment
RSA52011
Carex brevicaulis
J. T. Howell
1944-3-26
19345
Marin
Above Ledum Swamp, Inverness Ridge.
Comment
RSA0079897
Carex brevicaulis
John Thomas Howell
1968-4-18
44191 a
Monterey
About 4 miles east of Monterey near the airport.
Comment
RSA0079898
Carex brevicaulis
John Thomas Howell
1946-4-21
21683
Marin
Sandy down near radio station, Pt. Reyes Peninsula.
Comment
CAS-BOT-BC34148
Carex breweri
John Thomas Howell
1944-8-10
20288
Mono
Dana Plateau.
Comment
CAS-BOT-BC34342
Carex congdonii
John Thomas Howell
1942-7-28
17334
Tulare
Between Pinto Lake and Black Rock Pass.
Comment
UCD140239
Carex cusickii
John Thomas Howell
1958-6-28
33641
Marin
Mt. Tamalpais.
Comment
CAS-BOT-BC34432
Carex davyi
John Thomas Howell
1944-8-16
20620
Tuolumne
Mono Pass.
3230
Comment
CAS-BOT-BC34854
Carex deflexa var. boottii
John Thomas Howell
1941-7-24
16428
Madera
Near Garnet Lake.
2956
Comment
CAS-BOT-BC34899
Carex deflexa var. boottii
John Thomas Howell
1942-8-1
17558
Tulare
Sky Parlor Meadow. Chagoopa Plateau.
Comment
CAS-BOT-BC18920
Carex densa
John Thomas Howell
1956-6-10
31531
San Francisco
San Francisco. North slope of Bayview Hills.
Comment
CAS-BOT-BC18938
Carex densa
John Thomas Howell
1938-5-1
13785
San Mateo
Near South San Francisco.
Comment
CAS-BOT-BC20482
Carex densa
John Thomas Howell
1945-5-30
20891
Sonoma
Pitkin Marsh.
Comment
CAS-BOT-BC35005
Carex densa
John Thomas Howell
1941-6-10
16299
Marin
9 miles west of Novato.
Comment
RSA52111
Carex densa
J. T. Howell
1943-5-2
17935
Marin
Big Carson Canyon.
Comment
UC824432
Carex densa
John Thomas Howell
1938-6-5
13903
Marin
Rock Spring Mt. Tamalpais, Rock Spring
Comment
CAS-BOT-BC35041
Carex densa
John Thomas Howell
1945-5-6
s.n.
Marin
Near Dominican College. San Raphael.
Comment
CAS-BOT-BC20630
Carex douglasii
John Thomas Howell
1949-7-17
25434
Inyo
Sierra Nevada. Little Cottonwood Creek.
2987
Comment
POM248596
Carex dudleyi
J. T. Howell
1938-7-3
13948
Sonoma
Stony Point.
Comment
RSA38502
Carex exserta
J. T. Howell
1948-7-24
24979
Fresno
Bullfrog Lake.
3241
Comment
CAS-BOT-BC20292
Carex filifolia var. erostrata
John Thomas Howell
1942-8-1
17566
Tulare
Chagoopa Plateau.
Comment
CAS-BOT-BC21203
Carex fissuricola
John Thomas Howell
1942-7-29
17372
Tulare
Little Five Lakes Basin.
Comment
CAS-BOT-BC21145
Carex fissuricola
John Thomas Howell
1958-8-16
34518
Madera
Sierra Nevada. East fork of Grantie Creek.
2682
Comment
CAS-BOT-BC21218
Carex fracta
John Thomas Howell
1943-8-3
8960
Glenn
Plaskett Meadows.
1828
Comment
CAS-BOT-BC21302
Carex fracta
John Thomas Howell
1976-7-19
51968
Lassen
Sierra Nevada. On Gold Run Creek southwest of Susanville.
1386
Comment
CAS-BOT-BC20677
Carex fracta
John Thomas Howell
1943-7-18
18561
Nevada
Castle Creek above Soda Springs Station.
Comment
SEINET7559342
Carex fracta
John Thomas Howell, T. C. Fuller, G. D. Barbe
1980-7-15
53774
Tulare
Pipe Spring, west side of Big Meadow, Kern Plateau.
2377
Comment
SD72053
Carex globosa
John Thomas Howell
1955-6-2
30258 A
Sonoma
Near Vine Hill School.
Comment
CAS-BOT-BC20886
Carex globosa
John Thomas Howell
1933-4-30
11193
Marin
North side of Mt. Tamalpais.
Comment
CAS-BOT-BC28326
Carex gracilior
John Thomas Howell
1947-6-5
23241
Sonoma
Cunningham Marsh.
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-BC28383
Carex gracilior
John Thomas Howell
1946-5-16
21870
Marin
Angel Island, S side.
Comment
CAS-BOT-BC146564
Carex gynodynama
John Thomas Howell
1947-5-25
23202
Marin
Willow Meadow, Mt. Tamalpais
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
CAS-BOT-BC22135
Carex harfordii
John Thomas Howell
1944-6-4
19575
Marin
Inverness Ridge, west of Inverness.
Comment
RSA52315
Carex harfordii
J. T. Howell
1944-5-28
19523
Marin
Between Almonte and Mill Valley.
Comment
SEINET10888294
Carex heteroneura
John Thomas Howell
1944-8-7
Howell 20056
Tuolumne
Tuolume Meadows,
Comment
CAS-BOT-BC28076
Carex hoodii
John Thomas Howell
1960-7-20
35750
Plumas
Rocky slope, Boiling Springs Lake.
1798
Comment
CAS-BOT-BC7838
Carex incurviformis
John Thomas Howell
1949-8-5
26071
Inyo
Army Pass.
3657
Comment
CAS-BOT-BC7841
Carex incurviformis
John Thomas Howell
1946-7-24
22700
Inyo
Mono Mesa.
3657
Comment
SEINET10710001
Carex integra
John Thomas Howell
1944-8-5
Howell 19989
Tuolumne
Tuolumne Meadows, near Parson Lodge.
Comment
CAS-BOT-BC35451
Carex jonesii
John Thomas Howell
1950-7-14
26867
Tulare
Bakeoven Meadows
2468
Comment
CAS-BOT-BC35575
Carex jonesii
John Thomas Howell
1962-7-11
38602
Kern
Shirley Meadows, Greenhorn Mountains
2011
Comment
CAS-BOT-BC31098
Carex leavenworthii
John Thomas Howell
1946-6-8
21990
Alameda
Berkeley Tennis Club
Comment
CAS-BOT-BC28540
Carex lenticularis var. impressa
John Thomas Howell
1940-8-1
15796
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC31221
Carex lenticularis var. impressa
John Thomas Howell
1941-8-3
16742
Madera
Near Garnet Lake.
2956
Comment
SEINET7564601
Carex lenticularis var. impressa
John Thomas Howell
1939-8-7
15128
Siskiyou
Sky High Valley, Marble Mts.
1829
Comment
CAS-BOT-BC28445
Carex lenticularis var. lipocarpa
John Thomas Howell
1942-7-26
17207
Tulare
Mineral King.
Comment
CAS-BOT-BC28464
Carex lenticularis var. lipocarpa
John Thomas Howell
1960-8-22
36394
Shasta
Hat Lake
1950
Comment
GH424025
Carex leptalea
J. T. Howell
1943-7-4
18254
Unknown
Ledum Swamp on road to Pt. Reyes
Comment
RSA88659
Carex leptalea subsp. leptalea
J. T. Howell
1936-8-23
12703
Trinity
Near Trinity Center
Comment
CAS-BOT-BC31673
Carex luzulina var. ablata
John Thomas Howell
1961-6-20
36578
Tehama
Bluff Falls.
1981
Comment
CAS-BOT-BC146620
Carex mendocinensis
John Thomas Howell
1940-5-26
15535
Marin
Little Carson Falls
Comment
CAS-BOT-BC146638
Carex mendocinensis
John Thomas Howell
1942-7-12
17020
Marin
Potrero Meadow, Mt. Tamalpais
Comment
CAS-BOT-BC31803
Carex microptera
John Thomas Howell
1949-7-26
25791
Tulare
Golden Trout Creek.
2941
Comment
CAS-BOT-BC31811
Carex microptera
John Thomas Howell
1944-8-7
20066
Tuolumne
Tuolumne Meadows.
Comment
CAS-BOT-BC31878
Carex microptera
John Thomas Howell
1947-8-5
23749
Inyo
Big Pine Lakes, Fifth Lake.
3352
Comment
CAS-BOT-BC119994
Carex multicostata
John Thomas Howell
1942-7-26
17257
Tulare
Mineral King
Comment
CAS-BOT-BC32176
Carex multicostata
John Thomas Howell
1938-8-13
14575
Mariposa
Snow Flat
Comment
CAS-BOT-BC32219
Carex multicostata
John Thomas Howell
s.n.
Unknown
Unspecified
Comment
SEINET10713219
Carex multicostata
John Thomas Howell
1942-8-1
Howell 17563
Tulare
Chagoopa Plateau, Tulare Co.
Comment
CAS-BOT-BC119697
Carex nervina
John Thomas Howell
1943-7-24
18770
Nevada
Frog Lake.
Comment
CAS-BOT-BC119661
Carex neurophora
John Thomas Howell
1943-8-9
19224 A
Glenn
In cold spring NE of Ranger Station, Plaskett Meadows.
1828
Comment
CAS-BOT-BC119527
Carex nudata
John Thomas Howell
1945-8-29
20788
Marin
Rocky bed of Lagunitas Creek.
Comment
CAS-BOT-BC119307
Carex obnupta
John Thomas Howell; J. W. Stacey
1936-7-26
12676
Sonoma
Pitkin Marsh, 5 mi N of Sebastopol.
Comment
CAS-BOT-BC119390
Carex obnupta
John Thomas Howell
1946-7-4
22179
Marin
Dillons Beach.
Comment
CAS-BOT-BC119287
Carex ovalis
John Thomas Howell
1947-6-5
23240
Sonoma
Cunningham Marsh.
Comment
RSA201424
Carex ovalis
J. T. Howell
1947-6-5
23240
Sonoma
Cunningham Marsh
Comment
RSA35304
Carex ovalis
J. T. Howell
1944-6-4
19567
Marin
Mt. Vision west of Inverness
Comment
CAS-BOT-BC118875
Carex pellita
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-15
53783
Tulare
Pipe Spring, west side of Big Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC119098
Carex phaeocephala
John Thomas Howell
1941-8-3
16723
Madera
Near Garnet Lake.
2956
Comment
RSA38497
Carex phaeocephala
J. T. Howell
1948-7-26
25047
Tulare
Center Basin.
3415
Comment
RSA43477
Carex phaeocephala
J. T. Howell
1942-8-7
17815 A
Tulare
Columbine Lake.
Comment
RSA43478
Carex phaeocephala
J. T. Howell
1941-8-22
16382
Fresno
Fresno-Inyo County. Mono Pass.
3506
Comment Read comments Mar 29 2010
CAS-BOT-BC118770
Carex preslii
John Thomas Howell
1937-7-24
13431
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
CAS-BOT-BC118682
Carex proposita
John Thomas Howell
1946-7-24
22701
Inyo
Mono Mesa
3657
Comment
CAS-BOT-BC118036
Carex rossii
John Thomas Howell
1958-8-16
34491
Madera
East Fork of Granite Creek.
2743
Comment
CAS-BOT-BC118042
Carex rossii
John Thomas Howell
1944-8-10
20282
Mono
Dana Plateau
Comment
CAS-BOT-BC118170
Carex rossii
John Thomas Howell
1942-7-31
17451
Tulare
Near timberline, Mt. Kaweah.
Comment
CAS-BOT-BC118195
Carex rossii
John Thomas Howell; Gordon H. True
1966-7-11
41706
Tulare
Horse Meadow, Kern Plateau
2255
Comment
CAS-BOT-BC118129
Carex rossii
John Thomas Howell
1960-7-21
35832
Plumas
Meadowy forest floor NW of Willow Lake.
1706
Comment
GH424021
Carex scabriuscula
J. T. Howell
1936-8-24
12725
Unknown
Summit of Scott Mts. n. of Carrville
Comment
CAS-BOT-BC28259
Carex scopulorum var. bracteosa
John Thomas Howell; Gordon H. True
1967-9-20
43954
Tulare
Powell Meadow, ca 6 mi N of Blackrock Guard Station
2682
Comment
CAS-BOT-BC28262
Carex scopulorum var. bracteosa
John Thomas Howell
1942-8-1
17552
Tulare
Sky Parlor Meadow, Chagoopa Plateau
Comment
GH424121
Carex scopulorum var. bracteosa
J. T. Howell
1942-8-5
17732
Unknown
Kaweah Meadows, Chagoopa Plateau
Comment
CAS-BOT-BC28282
Carex scopulorum var. bracteosa
John Thomas Howell
1944-8-13
14578
Mariposa
Snow Flat.
Comment
CAS-BOT-BC117454
Carex senta
John Thomas Howell
1947-7-21
23450
San Bernardino
Lost Creek, San Bernardino Mts.
1920
Comment
CAS-BOT-BC117561
Carex serratodens
John Thomas Howell
1945-6-19
21019
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC117696
Carex simulata
John Thomas Howell
1943-7-22
18696
Placer
Summit Valley
Comment
CAS-BOT-BC117710
Carex simulata
John Thomas Howell
1944-8-3
19870
Alpine
W side of Sonora Pass.
2346
Comment
CAS-BOT-BC117134
Carex spectabilis
John Thomas Howell
1947-8-5
23771
Inyo
Big Pine Lakes, Fifth Lake.
3352
Comment
CAS-BOT-BC117306
Carex spectabilis
John Thomas Howell
1940-8-1
15826
Tulare
Between Reflection Lake and Harrison Pass.
Comment
UC835743
Carex spectabilis
John Thomas Howell
1939-8-9
15226
Siskiyou
ridge s Marble Valley; Marble Mts.
Comment
SEINET12882914
Carex spectabilis
J. T. Howell
1939-1
15226
Unknown
Comment
RSA201388
Carex spissa
J. T. Howell
1964-6-28
40716
Monterey
Moist ground on Coast Highway at Villa Creek.
Comment
CAS-BOT-BC116961
Carex straminiformis
John Thomas Howell
1940-8-1
15829
Tulare
Between Reflection Lake and Harrison Pass.
Comment
CAS-BOT-BC117013
Carex straminiformis
John Thomas Howell
1939-8-8
15149 A
Siskiyou
Black Mt. Marble Mts.
Comment
CAS-BOT-BC117062
Carex straminiformis
John Thomas Howell
1947-8-5
23794
Inyo
Fifth Lake
3352
Comment
CAS-BOT-BC116860
Carex subbracteata var. subbracteata
John Thomas Howell
1957-5-26
32471
San Francisco
North base of Lone Mt.
Comment
CAS-BOT-BC116893
Carex subbracteata var. subbracteata
John Thomas Howell
1945-5-27
20883
Marin
NE of Mountain Theater, Mt. Tamalpais.
Comment
CAS-BOT-BC116900
Carex subbracteata var. subbracteata
John Thomas Howell; J. W. Stacey
1936-6-7
12633
Marin
San Geronimo
Comment
CAS-BOT-BC114996
Carex subfusca
John Thomas Howell
1951-6-27
27600
Plumas
McRae Meadow.
1981
Comment
CAS-BOT-BC116773
Carex subfusca
John Thomas Howell
1942-5-2
17936
Marin
Warm Spring, Big Carson Canyon
Comment
UCD140912
Carex subfusca
John Thomas Howell
1960-7-22
35875
Plumas
Lassen Volcanic National Park. Drakesbad.
1676
Comment
CAS-BOT-BC9353
Carex subnigricans
John Thomas Howell
1940-8-1
15821
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC9360
Carex subnigricans
John Thomas Howell
1944-8-6
20043
Tuolumne
Dog Lake
Comment
CAS-BOT-BC32505
Carex tompkinsii
John Thomas Howell
1960-6-6
35333
Fresno
Sierra Nevada. 5500Copper Creek Trail, Kings Canyon
Comment
UCR88072
Carex tompkinsii
J. T. Howell
1972-4-24
48696
Mariposa
Sierra Nevada Mountains, El Portal.
640
Comment
CAS-BOT-BC115370
Carex utriculata
John Thomas Howell
1947-6-4
23212
Marin
Swale near radio station, Pt. Reyes Peninsula.
Comment
CAS-BOT-BC115407
Carex utriculata
John Thomas Howell
1976-7-15
51854
Plumas
Snake Lake, ca 4 mi NW of Quincy.
1219
Comment
CAS-BOT-BC115482
Carex utriculata
John Thomas Howell
1950-7-20
27129
Tulare
Shallow margin of river, Bakeoven Meadows, South Fork of Kern River.
2468
Comment
RSA35084
Carex vesicaria var. vesicaria
J. T. Howell
1944-8-17
20676
Tuolumne
Soda Springs, Tuolumne Meadows.
Comment
CAS-BOT-BC114847
Carex whitneyi
John Thomas Howell
1963-7-9
39657
El Dorado
Near foot of Echo Summit grade, 1 mi SW of Meyers.
2011
Comment
UCD129931
Carlquistia muirii
John Thomas Howell
1958-7-20
33679
Fresno
Copper Creek Canyon.
2072
Comment
CAS-BOT-BC281922
Carthamus lanatus
John Thomas Howell
1944-8-18
20713
Tuolumne
Near Jacksonville
Comment
CAS-BOT-BC241143
Castilleja applegatei subsp. pinetorum
John Thomas Howell
1937-7-29
13642
Siskiyou
Scott Mt. between Trinity and Siskiyou cos.
Comment
CAS-BOT-BC241158
Castilleja applegatei subsp. pinetorum
John Thomas Howell
1937-7-25
13495 A
Trinity
Stuarts Fork of Trinity River
2225
Comment
CAS-BOT-BC241185
Castilleja applegatei subsp. pinetorum
John Thomas Howell
1942-8-5
17690
Tulare
Between Big Arroyo and Chagoopa Plateau
Comment
CAS-BOT-BC241196
Castilleja applegatei subsp. pinetorum
John Thomas Howell; Gordon H. True
1970-6-24
46749
Tulare
South Manter Creek, Big Meadow to Manter Meadow, Kern Plateau
2316
Comment
CAS-BOT-BC241207
Castilleja applegatei subsp. pinetorum
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-15
53754
Tulare
Upper part of Brush Creek Canyon on Cherry Hill Road, Kern Plateau
1767
Comment
JEPS58942
Castilleja attenuata
John Thomas Howell
1943-4-11
17917
Marin
Black Canyon San Rafael Hills
Comment
CAS-BOT-BC226017
Castilleja chromosa
John Thomas Howell
1934-6-13
12094
Modoc
2.5 mi. S of Eagleville.
Comment
JEPS58920
Castilleja densiflora subsp. densiflora
John Thomas Howell
1946-5-4
21722
Marin
e of Dillons Beach
Comment
CAS-BOT-BC251901
Castilleja lemmonii
John Thomas Howell
1943-7-24
18787
Nevada
Frog Lake
Comment
CAS-BOT-BC254116
Castilleja miniata
John Thomas Howell
1939-8-2
14861
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
CAS-BOT-BC40224
Caulanthus lasiophyllus
John Thomas Howell
1940-5-20
15510
Marin
Point Reyes. Near lighthouse.
Comment
CAS-BOT-BC39470
Caulanthus lemmonii
John Thomas Howell
1931-3-20
5902
Kern
2 miles west of Maricopa.
Comment
CAS-BOT-BC47800
Ceanothus
John Thomas Howell
1937-4-11
12899
Sonoma
6 miles from Santa Rosa on road to Sonoma
Comment
CAS-BOT-BC48503
Ceanothus confusus
John Thomas Howell
1945-6-20
21131
Lake
Between Pinnacle Rock and Low Gap, Bartlett Mountain
Comment
RSA21914
Ceanothus confusus
J. T. Howell
1935-5-5
12618
Sonoma
6 miles from Santa Rosa on road to Sonoma.
Comment
CAS-BOT-BC48685
Ceanothus cordulatus
John Thomas Howell; Gordon H. True
1970-6-24
46711
Tulare
North Manter Creek, Big Meadow to Manter Meadow, Kern Plateau
2438
Comment
CAS-BOT-BC48812
Ceanothus cuneatus
John Thomas Howell
1955-6-14
30441
Butte
Magalia
731
Comment
CAS-BOT-BC49031
Ceanothus cuneatus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-25
54297
Plumas
Sierra Nevada - East side of Indian Valley just north of Taylorsville
1112
Comment
CAS-BOT-BC49786
Ceanothus divergens
John Thomas Howell
1941-4-5
16167
Napa
About 1 mi. sw. of Calistoga
Comment
CAS-BOT-BC50931
Ceanothus foliosus var. foliosus
John Thomas Howell
1948-5-16
24298
Marin
Upper part of Cascade Canyon, Mt. Tamalpais
Comment
A349340
Ceanothus gloriosus
J. T. Howell
1934-3-3
11742
Unknown
8 miles s. of Stewart's Point
Comment
CAS-BOT-BC50015
Ceanothus gloriosus
John Thomas Howell
1937-4-11
12903
Sonoma
6 miles from Santa Rosa on road to Sonoma
Comment
CAS-BOT-BC49934
Ceanothus gloriosus var. exaltatus
John Thomas Howell
1954-4-24
29149
Mendocino
Douglas fir woods, 6 miles north of Willits
Comment
CAS-BOT-BC49975
Ceanothus gloriosus var. gloriosus
John Thomas Howell
1934-3-3
11742
Sonoma
8 miles S. of Stewart's Point
Comment
CAS-BOT-BC32740
Ceanothus gloriosus var. porrectus
John Thomas Howell
1939-6-4
14710
Marin
Inverness Ridge on road to Pt. Reyes
Comment
CAS-BOT-BC50663
Ceanothus jepsonii
John Thomas Howell
1926-2-28
1654
Marin
Mt. Tamalpais - Rock Spring Trail
Comment
CAS-BOT-BC50541
Ceanothus leucodermis
John Thomas Howell
1958-5-22
33190
Tulare
Sierra Nevada - Kern River Canyon 3 miles above Roads End P.O.
1219
Comment
RSA467
Ceanothus megacarpus
J. T. Howell
1928-2-6
807
Orange
Claymine Canyon, Sierra Peak, Santa Ana Mts.
244
Comment
CAS-BOT-BC52012
Ceanothus prostratus
John Thomas Howell
1962-6-15
37449
Butte
Magalia
731
Comment
POM183416
Ceanothus purpureus
J. T. Howell
1931-4-2
6067
Napa
Wooden Valley Grade, 5 miles east of Napa
Comment
RSA95275
Ceanothus rigidus
J. T. Howell
1931-5-21
6492
Monterey
Gibson Canyon, Carmel Highlands.
Comment
CAS-BOT-BC53036
Ceanothus sonomensis
John Thomas Howell
1935-5-5
12609
Sonoma
Slopes of Triniti Mt., 2 miles ne. of Glen Ellen
Comment
RSA518965
Ceanothus velutinus
J. T. Howell
1969-9-14
46210
Mono
Leavitt Meadow.
2195
Comment
CAS-BOT-BC52813
Ceanothus verrucosus
John Thomas Howell
1931-6-2
6630
San Diego
Torrey Pines Park
Comment
CAS-BOT-BC52480
Ceanothus vestitus
John Thomas Howell
1928-6-15
3937 A
Inyo
Surprise Canyon just above Panamint City, Panamint Mts.
2164
Comment
CAS-BOT-BC63110
Ceanothus vestitus
John Thomas Howell; Gordon H. True
1967-5-29
42404
Tulare
Long Valley on road to Lamont Meadow. kern Plateau.
1645
Comment
RSA121030
Cenchrus longispinus
J. T. Howell
1955-10-11
30914
Merced
Near Arena.
Comment
RSA46
Cenchrus longispinus
J. T. Howell
1927-7-18
435
Orange
Santa Ana River, Rancho Santa Ana.
152
Comment
CAS-BOT-BC272085
Centaurea cyanus
John Thomas Howell
1951-6-26
27552
Plumas
Crescent Mills, Sierra Nevada
1066
Comment
JEPS33683
Centaurium muehlenbergii
John Thomas Howell
1926-6-13
2021
Stanislaus
Knight's Ferry
121
Comment
CAS-BOT-BC279342
Centromadia pungens subsp. pungens
John Thomas Howell
1967-11-4
44087
Tulare
About 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC279584
Centromadia pungens subsp. pungens
John Thomas Howell
1962-9-25
38932
Kern
South of Kernville below hot springs
792
Comment
CAS-BOT-BC222959
Cephalanthus occidentalis
John Thomas Howell
1929-9-21
4419
San Joaquin
Island Road between Brentwood and Stockton near Holt
Comment
CAS-BOT-BC384934
Cerastium arvense
John Thomas Howell
1962-6-16
37632
Plumas
Lewisia Rock, 3.5 miles southwest of Belden, Feather River Canyon
640
Comment
CAS-BOT-BC384992
Cerastium fontanum
John Thomas Howell
1964-8-10
40916
Alpine
Markleeville
1676
Comment
CAS-BOT-BC388377
Cerastium glomeratum
John Thomas Howell
1964-6-30
40887
San Luis Obispo
Cambria
Comment
CAS-BOT-BC135508
Cercocarpus betuloides var. betuloides
John Thomas Howell
1939-5-7
14645
Lake
8 1/2 miles east of Lower Lake on road to Knoxville
Comment
CAS-BOT-BC135573
Cercocarpus betuloides var. betuloides
John Thomas Howell; Alice Eastwood
1938-6-13
5856
Fresno
Range south of Jacalitos Creek
Comment
CAS-BOT-BC135574
Cercocarpus betuloides var. betuloides
John Thomas Howell; R. C. Barneby
1960-6-7
35433
Fresno
Kings Canyon Road 6.5 miles northeast of Cherry Gap - Sierra Nevada
1554
Comment
CAS-BOT-BC137214
Cercocarpus betuloides var. betuloides
John Thomas Howell; Gordon H. True
1969-5-13
45697
Tulare
2 miles south of Lamont Meadow near summit of Spanish Needle Creek road, Kern Plateau
1645
Comment
CAS-BOT-BC136955
Cercocarpus ledifolius var. intricatus
John Thomas Howell; Gordon H. True
1966-7-12
41813
Kern
Just east of Fay Creek Canyon, Kern Plateau
2194
Comment
CAS-BOT-BC214642
Cercocarpus ledifolius var. ledifolius
John Thomas Howell
1934-6-12
12009
Modoc
Between Davis Creek and Plum Valley.
Comment
CAS-BOT-BC279494
Chaenactis alpigena
John Thomas Howell
1951-7-18
27914
Tulare
Mineral King and vicinity. West side, Franklin Pass
3352
Comment
CAS-BOT-BC277662
Chaenactis glabriuscula var. megacephala
John Thomas Howell
1945-6-19
21030
Lake
Sawmill Flat, Bartlett Mountain
1219
Comment
CAS-BOT-BC284308
Chaenactis stevioides
John Thomas Howell
1949-7-17
25412
Inyo
Wonoga Peak
2895
Comment
RSA223676
Chamaesyce maculata
J. T. Howell
1956-7-1
31641
San Francisco
Front and Vallejo Streets.
Comment
GH347546
Chamaesyce vallis-mortae
J. T. Howell
1958-5-23
33198
Unknown
10 miles east of Onyx
1036
Comment
CAS-BOT-BC68204
Cheilanthes gracillima
John Thomas Howell
1937-7-26
13524
Siskiyou
Salmon-Trinity Alps, - Caribou Basin
2286
Comment
CAS-BOT-BC68135
Cheilanthes intertexta
John Thomas Howell
1953-5-24
29009
Tuolumne
between Pinecrest and Cow Creek
1737
Comment
CAS-BOT-BC473039
Chenopodium
John Thomas Howell
1962-7-7
381191
Kern
Wofford
792
Comment
SD71431
Chenopodium album
John Thomas Howell
1956-10-28
San Francisco
Presidio: mountain lake; high water line on sandy beach.
Comment
CDA2986
Chenopodium album var. stevensii
J. T. Howell, G. H. True
1969-9-3
46395
Tulare
Kern Plateau; Cherry Hill Road, 1 miles northwest of Big Meadow.
Comment
UCD97898
Chenopodium berlandieri var. zschackei
John Thomas Howell
1962-9-23
38826
Kern
Sierra Nevada. Greenhorn Summit. Greenhorn Mountains.
1859
Comment
CDA3017
Chenopodium chenopodioides
J. T. Howell, G. H. True
1967-9-19
43894
Tulare
Kern Plateau, Sierra Nevada; Flood-plain of Kern River South Fork, Kennedy Meadows Campground.
Comment
NY990893
Chenopodium strictum var. glaucophyllum
J. T. Howell
1969-9-28
46257
Tulare
Road's End, Kern River Canyon
1097
Comment
CAS-BOT-BC451392
Chimaphila menziesii
John Thomas Howell
1943-8-8
19183
Unknown
Anthony Peak, Tehama & Mendlcino Counties
Comment
CAS-BOT-BC184920
Chloris gayana
John Thomas Howell
1962-9-25
38913
Kern
Sierra Nevada. Kernville.
807
Comment
CAS-BOT-BC39661
Chorispora tenella
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-28
53374
Siskiyou
2 miles south of Grenada, Shasta Valley.
762
Comment
SEINET4182624
Chorizanthe brevicornu var. spathulata
J. T. Howell
1958-5-28
33591
Inyo
Bishop Creek
1524
Comment
UC1176905
Chorizanthe cuspidata
John Thomas Howell
1946-7-4
22176
Marin
Dillons Beach
Comment
CAS-BOT-BC247862
Chorizanthe watsonii
John Thomas Howell
1962-6-19
37885
Lassen
3 mi. s. of Hallelujah Junction
1524
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
RSA263852
Chrysolepis chrysophylla
J. T. Howell
1973-7-19
49953
El Dorado
Blodgett Forest.
1311
Comment
SBBG50530
Chrysolepis chrysophylla
J. T. Howell
1973-7-19
El Dorado
Blodgett Forest
1310
Comment
RSA44441
Chrysothamnus nauseosus subsp. albicaulis
J. T. Howell
1947-8-13
24042
Inyo
Black Lake Trail, Big Pine Lakes
3049
Comment
CAS-BOT-BC100797
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell
1949-8-13
26282
Inyo
Little Cottonwood Creek
2895
Comment
CAS-BOT-BC100868
Chrysothamnus viscidiflorus subsp. viscidiflorus
John Thomas Howell
1950-7-17
27034
Tulare
Templeton Meadows
2590
Comment
CAS-BOT-BC162785
Chylismia claviformis subsp. claviformis
John Thomas Howell
1928-3-11
3420
Riverside
Morongo Canyon, N. Colorado Desert
609
Comment
CAS-BOT-BC285358
Cirsium andersonii
John Thomas Howell; Gordon H. True
1969-10-1
46426
Tulare
Brush Creek Overlook, about 2 miles north of Poison Meadow, Kern Plateau
2468
Comment
CAS-BOT-BC285372
Cirsium andersonii
John Thomas Howell
1942-8-5
17682
Tulare
Between Big Arroyo and Chagoopa Plateau
3048
Comment
CAS-BOT-BC289602
Cirsium andersonii
John Thomas Howell; Gordon H. True
1967-8-18
4008
Nevada
Sagehen Creek Road ca. 1/2 miel swest of Truckee-Sierraville Hwy.
1828
Comment
SEINET12897775
Cirsium andrewsii
J. T. Howell
1933-1
11424
Unknown
Comment
CAS-BOT-BC278007
Cirsium cymosum
John Thomas Howell
1934-6-10
11908
Lassen
Madeline Plains near Termo
Comment
CAS-BOT-BC278082
Cirsium douglasii var. breweri
John Thomas Howell
1943-8-9
19217
Glenn
Plaskett Meadows
1828
Comment
CAS-BOT-BC279970
Cirsium douglasii var. douglasii
John Thomas Howell
1955-7-20
30890
Nevada
Near northwest end of Donner Lake
1828
Comment
CAS-BOT-BC100936
Cirsium fontinale var. fontinale
John Thomas Howell
1932-10-19
10852
San Mateo
Crystal Springs Lake
Comment
CAS-BOT-BC100974
Cirsium hydrophilum var. vaseyi
John Thomas Howell
1938-6-5
13897
Marin
Azalea Flat, Mt. Tamalpais
Comment
CAS-BOT-BC280017
Cirsium mohavense
John Thomas Howell
1948-8-1
25268
Inyo
Owens Valley, 1.5 miles south of Pine Creek
Comment
CAS-BOT-BC280054
Cirsium neomexicanum
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-27
53114
Alpine
East side of Ebbetts Pass on road to Markleeville
1828
Comment
CAS-BOT-BC280087
Cirsium occidentale var. californicum
John Thomas Howell
1925-5-10
1029
Merced
Merced River bottom between Snelling and Hopeton
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-BC285641
Cirsium occidentale var. occidentale
John Thomas Howell
1933-6-29
11408
San Bernardino
Summit of Cajon Pass
Comment
CAS-BOT-BC285717
Cirsium occidentale var. occidentale
John Thomas Howell
1931-5-29
6580
Ventura
Santa Susana Pass
Comment
UC1177303
Cirsium occidentale var. occidentale
J. Thomas Howell
1946-5-14
21844
Marin
along road between Rock Spring and Summit Meadow; Mt. Tamalpais
Comment
CAS-BOT-BC280414
Cirsium occidentale var. venustum
John Thomas Howell
1969-8-25
45901
Tulare
Near Mineral King on Farewell Gap Trail near Crystal Creek
2438
Comment
CAS-BOT-BC286549
Cirsium occidentale var. venustum
John Thomas Howell
1931-5-23
6508
Monterey
Jolon Grade, 11 miles west of King City, Santa Lucia Mts.
Comment
CAS-BOT-BC288040
Cirsium occidentale var. venustum
John Thomas Howell
1962-6-15
37430
Butte
4 miles from Paradise on road to Oroville
106
Comment
CAS-BOT-BC292678
Cirsium occidentale var. venustum
John Thomas Howell
1940-8-9
16076
Fresno
Between Vidette Meadow and Bullfrog Lake
Comment
CAS-BOT-BC280413
Cirsium occidentale var. venustum
John Thomas Howell; Gordon H. True
1971-7-16
48618
Tulare
Cherry Hill Road near Rincon Trail, Brush Creek Canyon. Kern Plateau
1463
Comment
CAS-BOT-BC286556
Cirsium occidentale var. venustum
John Thomas Howell
1953-6-15
29096
Monterey
Santa Lucia Mountains. East of Jamesburg - Greenfield summit
Comment
CAS-BOT-BC280532
Cirsium quercetorum
John Thomas Howell
1938-7-3
13953
Sonoma
Stony Point
Comment
UC1177293
Cirsium quercetorum
John Thomas Howell
1943-6-6
18200
Marin
between Mill Valley Muir Woods
Comment
CAS-BOT-BC280484
Cirsium quercetorum
John Thomas Howell
1953-6-15
29100
Monterey
Santa Lucia Mountains. 20 miles from Greenfield on road to Carmel
Comment
CAS-BOT-BC285753
Cirsium remotifolium
John Thomas Howell
1937-7-4
13070
Sonoma
Near Petrified Forest
Comment
CAS-BOT-BC288743
Cirsium remotifolium
John Thomas Howell
1946-5-16
21878
Marin
Angel Island, S side
Comment
CAS-BOT-BC288744
Cirsium remotifolium
John Thomas Howell
1943-5-30
18181
Marin
Summit Ave, Mill Valley
Comment
CAS-BOT-BC288772
Cirsium remotifolium
John Thomas Howell
1939-8-4
15033
Siskiyou
Between Elk Mt and Marble River, Marble Mts
Comment
CAS-BOT-BC286293
Cirsium scariosum
John Thomas Howell
1947-8-5
23741
Inyo
Fifth Lake, Big Pine Lakes
3352
Comment
CAS-BOT-BC285838
Cirsium vulgare
John Thomas Howell
1959-9-22
34859
Plumas
Drakesbad
1737
Comment
CAS-BOT-BC438647
Cistanthe
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54278
Plumas
Mt. Hough
2203
Comment
CAS-BOT-BC439034
Cistanthe monosperma
John Thomas Howell
1951-6-29
27765
Plumas
Feather River Canyon
548
Comment
CAS-BOT-BC439076
Cistanthe monosperma
John Thomas Howell
1944-8-7
20067
Tuolumne
Tuolumne Meadows
Comment
CAS-BOT-BC229062
Cistanthe umbellata
John Thomas Howell
1948-7-28
25113
Tulare
Center Basin
3657
Comment
CAS-BOT-BC160990
Clarkia amoena subsp. amoena
John Thomas Howell
1946-6-9
22012
Marin
Pierce Ranch, n. Pt. Reyes Peninsula
Comment
CAS-BOT-BC164124
Clarkia breweri
John Thomas Howell
1937-5-19
12954
San Benito
The Pinnacles
Comment
RSA512849
Clarkia cylindrica
J. T. Howell
1971-7-12
48331
Kern
West slope of Greenhorn Range, 3 miles east of Glenville.
1280
Comment
CAS-BOT-BC171994
Clarkia epilobioides
John Thomas Howell
1931-5-30
6591
Riverside
Santiago Peak Trail, Santa Ana Mts.
Comment
CAS-BOT-BC164611
Clarkia gracilis subsp. gracilis
John Thomas Howell
1946-5-12
21811
Marin
Carson Ridge
Comment
CAS-BOT-BC163150
Clarkia imbricata
John Thomas Howell
1945-7-18
21315
Sonoma
Dry slope bordering Pitkin Marsh
Comment
CAS-BOT-BC163169
Clarkia lassenensis
John Thomas Howell
1967-6-23
42717
Plumas
Canyon of the East Branch of the Feather River 2 miles east of Twain
Comment
CAS-BOT-BC163414
Clarkia purpurea subsp. quadrivulnera
John Thomas Howell
1954-5-16
29584
Sacramento
4 miles southeast of Folsom on Placerville road
Comment
CAS-BOT-BC163484
Clarkia purpurea subsp. quadrivulnera
John Thomas Howell
1955-6-13
30373
Trinity
1 mile south of Hayfork
731
Comment
CAS-BOT-BC165287
Clarkia speciosa subsp. polyantha
John Thomas Howell; Gordon H. True
1971-7-12
48328
Kern
2.7 miles northeast of Woody on road to Glennville
731
Comment
POM193907
Claytonia exigua subsp. exigua
J. T. Howell
1930-4-6
4658
Santa Clara
Rocky slope, summit of Mt. Hamilton.
Comment
CAS-BOT-BC439840
Claytonia perfoliata
John Thomas Howell
1965-4-25
41114
Madera
3 miles northeast of Coarsegold
762
Comment
CAS-BOT-BC439835
Claytonia perfoliata
John Thomas Howell; Gordon H. True
1971-6-14
47680
Kern
3 mi. west of Glennville on road to Woody
1158
Comment
CAS-BOT-BC440106
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1962-7-11
38533
Kern
Sw. of Black Mt. Saddle, Greenhorn Mountains
1920
Comment
CAS-BOT-BC443592
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1946-4-13
21604
Marin
Near Rock Spring, Mt. Tamalpais
Comment
CAS-BOT-BC443622
Claytonia perfoliata subsp. perfoliata
John Thomas Howell
1957-4-27
32040
Monterey
Santa Lucia Mountains. 8 miles n. of Carmel Valley
182
Comment
CAS-BOT-BC91377
Clematis lasiantha
John Thomas Howell
1928-3-4
3372
Los Angeles
Santa Monica Mountains, northeast of Pacific Palisades.
Comment
CAS-BOT-BC91545
Clematis lasiantha
John Thomas Howell; Gordon H. True
1968-5-12
44242
Tulare
Sierra Nevada. Kern Plateau. Along Brush Creek.
1402
Comment
CAS-BOT-BC91440
Clematis lasiantha
John Thomas Howell
1955-7-7
30560
Monterey
Santa Lucia Mountains. Ridge southeast of Bear Mountain.
1371
Comment
JEPS42687
Cleomella obtusifolia
John Thomas Howell
1927-7-9
2680
San Bernardino
along road between Box S Ranch and Deadman's Point (nearer Box S Ranch)
914
Comment
RSA121023
Collinsia heterophylla
J. T. Howell
1957-5-19
32364
Stanislaus
Del Puerto Canyon.
Comment
CAS-BOT-BC226087
Collinsia parviflora
John Thomas Howell
1934-6-13
12055
Modoc
Fandango Pass.
1828
Comment
POM203034
Collinsia sparsiflora var. collina
J. T. Howell
1934-4-8
11810
Contra Costa
7 miles from Clayton on road to Livermore.
Comment
CAS-BOT-BC286135
Conyza canadensis
John Thomas Howell
1939-6-18
14768
Marin
Near Mud Lake
Comment
CAS-BOT-BC286085
Conyza canadensis
John Thomas Howell
1958-7-19
33649
Fresno
Cedar Grove, S. Fork Kings River
1402
Comment
CAS-BOT-BC286166
Conyza canadensis
John Thomas Howell
1960-7-20
35775
Plumas
Lassen Volcanic National Park. Boiling Springs Lake
1798
Comment
CAS-BOT-BC288937
Conyza canadensis
John Thomas Howell; Gordon H. True
1967-8-10
43718
Tulare
About 4.5 miles ENE of Pixley, along Road 104
83
Comment
CAS-BOT-BC288981
Conyza floribunda
J. T. Howell
1956-9-30
31897
San Francisco
Waterfront St near Mission Rock Terminal
Comment
CAS-BOT-BC26795
Cordylanthus nidularius
John Thomas Howell
1942-7-19
17044
Contra Costa
NE of Deer Flat, Mt. Diablo
Comment
CAS-BOT-BC238089
Cordylanthus rigidus subsp. brevibracteatus
John Thomas Howell
1970-9-22
47294
Tulare
Kern River Canyon, 2.3 miles south of Hospital Flat
853
Comment
LA209076
Cordylanthus rigidus subsp. rigidus
John Thomas Howell;
1933-8-13
11500
Santa Clara
3 mi. from Smith Creek on road to Mt. Hamilton
Comment
CAS-BOT-BC101030
Coreopsis gigantea
John Thomas Howell
1932-3-13
8220
Ventura
San Nicolas Island
Comment
CAS-BOT-BC101176
Corethrogyne filaginifolia
John Thomas Howell
1930-10-24
5654 A
Monterey
5.2 miles east of The Indians, Santa Lucia Mts.
Comment
CAS-BOT-BC105656
Corethrogyne filaginifolia
John Thomas Howell
1944-5-14
19454
Marin
Pt. Reyes Station
Comment
GH387100
Corethrogyne filaginifolia
J. T. Howell
1933-8-19
11613
Unknown
Mt. Hermon, Santa Cruz Mts.
Comment
JEPS74311
Corethrogyne filaginifolia
John Thomas Howell
1973-11-2
50311
Kern
near summit Grocer Grade (s of Maricopa)
762
Comment
GH387193
Corethrogyne filaginifolia var. peirsonii
J. T. Howell
1970-9-25
47438
Unknown
Kernville
807
Comment
CAS-BOT-BC209721
Cornus
John Thomas Howell
1977-6-21
52379
Plumas
Seneca
1097
Comment
A385385
Cornus glabrata
J. T. Howell
1939-5-7
14654
Unknown
3 1/2 miles from Knoxville on road to Lower Lake
Comment
CAS-BOT-BC210324
Cornus sericea
John Thomas Howell
1959-9-24
34937
Plumas
Butterfly Creek near mouth
Comment
CAS-BOT-BC212161
Cornus sericea
John Thomas Howell
1958-7-30
34133
Fresno
Simpson Meadow, Middle Fork of the Kings River, Sierra Nevada
1828
Comment
CAS-BOT-BC210567
Cornus sessilis
John Thomas Howell
1955-6-14
30418
Trinity
2 miles west of Buckhorn Mt. summit
792
Comment
CAS-BOT-BC169510
Corylus cornuta subsp. californica
John Thomas Howell
1925-2-8
751
Alameda
Strawberry Canon [canyon], Berkeley Hills
Comment
CAS-BOT-BC172839
Corylus cornuta subsp. californica
John Thomas Howell
1969-9-12
46089
El Dorado
Near Bridal Veil Falls, 3 miles W of Riverton. Sierra Nevada
Comment
CAS-BOT-BC427586
Crassula aquatica
John Thomas Howell
1944-5-21
19499
Marin
Lagunitas Meadows, Mt. Tamalpais
Comment
CAS-BOT-BC427602
Crassula aquatica
John Thomas Howell
1926-11-7
2243
San Francisco
Lake Merced, San Francisco.
Comment
CAS-BOT-BC427899
Crassula connata
John Thomas Howell
1967-4-30
42118
Tulare
About 4 1/2 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC427913
Crassula connata
John Thomas Howell
1932-3-13
8214
Ventura
San Nicolas Island
Comment
CAS-BOT-BC290354
Crepis acuminata
John Thomas Howell
1941-8-2
16699
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC291527
Crepis intermedia
John Thomas Howell
1939-8-4
15041
Siskiyou
Marble Rim, Marble Mts.
1889
Comment
CAS-BOT-BC291515
Crepis intermedia
John Thomas Howell
1925-6-29
1253
El Dorado
Armstrong's, Everald Bay, Lake Tahoe
1889
Comment
UCD126217
Cressa truxillensis
John Thomas Howell
1973-7-25
50009
Merced
Ingomar.
30
Comment
RSA429
Croton californicus
J. T. Howell
1928-7-9
1060
Riverside
Temescal Canyon, 6 miles south of Glen Ivy
335
Comment
RSA54053
Croton californicus var. tenuis
J. T. Howell
1948-7-2
24768
Los Angeles
Redondo Beach.
Comment
CAS-BOT-BC182507
Cryptantha
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-25
54299
Plumas
East side of Indian Valley just north of Taylorsville
1112
Comment
CAS-BOT-BC189292
Cryptantha
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-13
54583
Mono
Just N of Old Sherwin Hill Summit on Old Sherwin Grade Road
1950
Comment
CAS-BOT-BC54133
Cryptantha ambigua
John Thomas Howell
1934-6-30
12297
Modoc
Duncan Horse Camp.
1355
Comment
CAS-BOT-BC189326
Cryptantha circumscissa
John Thomas Howell
1934-6-10
11852
Lassen
4 miles S of Omira
Comment
RSA0094677
Cryptantha clevelandii
J. T. Howell
1955-7-7
30558
Monterey
Ridge southeast of Bear Mt., Santa Lucia Mountains.
1220
Comment
CAS-BOT-BC218817
Cryptantha glomeriflora
John Thomas Howell; Gordon H. True
1967-5-29
42411
Tulare
Kern Plateau, near north end of Long Valley in metamorphic area
2103
Comment
SEINET8542118
Cryptantha glomeriflora
J. T. Howell
1963-7-10
39744
Alpine
Sierra Nevada, flat near Monitor Pass.
2530
Comment
UC750727
Cryptantha glomeriflora
John Thomas Howell
1946-7-27
22804
Inyo
near Ruby Lake; Rock Creek Lake Basin
3352
Comment
JEPS22385
Cryptantha intermedia
John Thomas Howell
1927-6-5
2435
Orange
Santa Ana Canyon
152
Comment
POM226103
Cryptantha leiocarpa
J. T. Howell
1933-5-7
11219
San Francisco
Above Marine Hospital, Presidio, San Francisco.
Comment Read comments Sep 7 2010
CAS-BOT-BC70416
Cryptogramma acrostichoides
John Thomas Howell
1946-7-16
22454
Inyo
Long Lake, Rock Creek Lake Basin
3230
Comment
RSA128701
Cupressus macrocarpa
J. T. Howell
1957-5-8
s.n.
San Mateo
Skyline Blvd. west of San Bruno
Comment
SEINET944599
Cuscuta brachycalyx
John Thomas Howell, Gordon H. True
1967-1
43959
Tulare
''Phacelia Gulch'', 2.8 miles from Kennedy Meadow bridge on road to Troy Meadow. Kern Plateau
2195
Comment
CAS-BOT-BC215947
Cuscuta californica
John Thomas Howell
1969-9-13
46101
Sierra
Little Truckee River near outlet of Webber Lake, Sierra Nevada
2042
Comment
RSA40172
Cuscuta californica
J. T. Howell
1943-8-10
19264
Glenn
Black Butte
Comment
POM203115
Cuscuta californica
J. T. Howell
1933-8-17
11539
San Benito
4 miles N of Pinnacles
Comment
RSA22025
Cuscuta ceanothi
J. T. Howell
1939-9-3
15355
Marin
San Antonio Creek
Comment
UCD98529
Cycloloma atriplicifolium
John Thomas Howell
1963-3-6
48117
Merced
6 miles south of Livinston at Merced-Gustine road.
30
Comment
CAS-BOT-BC299745
Cynara cardunculus
John Thomas Howell
1953-3-15
28922
Contra Costa
Danville
Comment
CAS-BOT-BC190177
Cynodon dactylon
John Thomas Howell
1954-9-6
30068
Calaveras
Altaville.
Comment
CAS-BOT-BC190254
Cynodon dactylon
John Thomas Howell
1963-8-5
39948
Monterey
Just east of King City on Lonoak Road.
Comment
RSA98059
Cynosurus echinatus
J. T. Howell
1954-8-11
s.n.
Santa Cruz
2 miles from Skyline Boulevard on road to Big Basin.
Comment
CAS-BOT-BC114546
Cyperus eragrostis
John Thomas Howell
1959-9-21
34795
Plumas
Virgilia.
841
Comment
UCD141045
Cyperus erythrorhizos
John Thomas Howell
1970-9-25
47466
Kern
Sierra Nevada, Lake Isabella, about 5 miles S of Kernville.
792
Comment
CAS-BOT-BC113976
Cyperus odoratus
John Thomas Howell
1952-10-28
288912
Tulare
Three Rivers
Comment
UCD141125
Cyperus odoratus
John Thomas Howell
1974-9-19
50878
Sutter
1.7 mi. south of Robbins on road to Knights Landing.
7
Comment
CAS-BOT-BC114099
Cyperus squarrosus
John Thomas Howell
1962-9-25
s.n.
Kern
Bed of Kern River 3 mi. N of Kernville.
822
Comment
CAS-BOT-BC114054
Cyperus squarrosus
John Thomas Howell; Gordon H. True
1969-9-29
46286
Tulare
Upper Dry Lake, E of North end of Long Meadow.
2392
Comment
CAS-BOT-BC67985
Cystopteris fragilis
John Thomas Howell
1946-7-14
22301
Inyo
Rock Creek Lake Basin - Mosquito Flat
3139
Comment
CAS-BOT-BC70578
Cystopteris fragilis
John Thomas Howell
1958-8-13
34372
Madera
Near Isberg Lake
2987
Comment
CAS-BOT-BC70685
Cystopteris fragilis
John Thomas Howell
1947-7-23
23548
San Bernardino
Dollar Lake, San Bernardino Mts.
2865
Comment
CAS-BOT-BC70698
Cystopteris fragilis
John Thomas Howell
1969-9-13
46102
Sierra
Little Truckee River near outlet of Webber Lake
2042
Comment
CAS-BOT-BC70550
Cystopteris fragilis
John Thomas Howell
1960-8-18
36069
Tehama
Bluff Falls
1981
Comment
CAS-BOT-BC445536
Damasonium californicum
John Thomas Howell
1926-7-30
2161
Plumas
Near Prattville
1371
Comment
CAS-BOT-BC189729
Danthonia californica
John Thomas Howell
1945-6-21
21145
Lake
Bartlett Mountain. Sawmill Flat.
1219
Comment
CAS-BOT-BC189863
Danthonia californica
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49487
Lassen
Sierra Nevada. Elysian Valley, west of Janesville.
1325
Comment
RSA299134
Danthonia californica var. americana
J. T. Howell
1958-7-30
34139
Fresno
Simpson Meadow, Middle Fork of the Kings River
1829
Comment
CAS-BOT-BC194380
Danthonia intermedia
John Thomas Howell
1946-7-28
22829
Inyo
Box Lake, Rock Creek Lake Basin
3200
Comment
SEINET10598336
Danthonia intermedia
John Thomas Howell
1944-8-11
Howell 20336
Tuolumne
Tuolumne Meadows.
Comment
GH341148
Danthonia unispicata
J. T. Howell
1941-8-3
16728
Unknown
Near Garnet Lake, Madera County
2956
Comment
SEINET10860728
Danthonia unispicata
John Thomas Howell
1955-6-13
Howell 30382
Trinity
Hayfork.
Comment
CAS-BOT-BC287377
Deinandra corymbosa
John Thomas Howell
1943-5-23
18171
Alameda
Hills above Mills College
Comment
CAS-BOT-BC286260
Deinandra corymbosa
John Thomas Howell
1930-8-3
5418
Monterey
Between Mission San Carlos and Del Monte
Comment
UC473564
Deinandra lobbii
John Thomas Howell
1930-10-24
5634
Monterey
17.2 mi e The Indians; Santa Lucia Mountains
Comment
CAS-BOT-BC291777
Deinandra lobbii
John Thomas Howell
1934-7-3
12380
Lassen
Big Valley near Bieber
Comment
CAS-BOT-BC9133
Delphinium cardinale
John Thomas Howell
1963-6-22
39553
Monterey
Priest Valley
685
Comment
CAS-BOT-BC10170
Delphinium hansenii
John Thomas Howell; Gordon H. True
1967-5-29
42374
Tulare
Near north end of lamont Meadow on road to Chimney Meadow, Kern Plateau
1859
Comment
CAS-BOT-BC10011
Delphinium hesperium subsp. pallescens
John Thomas Howell
1934-4-8
11824
Contra Costa
South of Antioch
Comment
CAS-BOT-BC9814
Delphinium nudicaule
John Thomas Howell
1926-3-20
1697
Napa
Old toll toad to Mt. St. Helena
Comment
POM204447
Delphinium nudicaule
J. T. Howell
1933-5-21
11300
Solano
Blue Rock Springs
Comment
CAS-BOT-BC116213
Delphinium parishii
John Thomas Howell
1928-4-2
3654
Inyo
2 miles east of Bradbury Well, Black Mountains
Comment
CAS-BOT-BC116456
Delphinium patens subsp. patens
J. T. Howell
1933-5-14
11279
Contra Costa
Hills east of St. Mary's College
Comment
CAS-BOT-BC121630
Delphinium patens subsp. patens
John Thomas Howell
1962-7-10
38488
Kern
Shirley Meadows, Greenhorn Mountains
2011
Comment
CAS-BOT-BC168182
Delphinium polycladon
John Thomas Howell
1941-7-31
16546
Madera
Agnew Pass Trail
Comment
CAS-BOT-BC17104
Delphinium uliginosum
John Thomas Howell
1943-5-11
18046
Lake
2.9 miles north of Middletown
Comment
RSA26407
Delphinium variegatum
J. T. Howell
1941-4-5
16175
Sonoma
1 mile S of El Verano
Comment
CAS-BOT-BC82841
Dendromecon harfordii
John Thomas Howell
1931-4-12
6275
Santa Barbara
Santa Cruz Island. Cochie Canyon.
Comment
CAS-BOT-BC194261
Deschampsia cespitosa subsp. cespitosa
John Thomas Howell; Gordon H. True
1973-8-1
50230
Lassen
Headwaters of Boxter Creek, east slope of Diamond Range south of Susanville
2133
Comment
CAS-BOT-BC192630
Deschampsia danthonioides
John Thomas Howell
1946-7-17
22494
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC201677
Deschampsia danthonioides
John Thomas Howell
1950-7-14
26875
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
RSA201362
Deschampsia danthonioides
J. T. Howell
1960-7-19
35619
Plumas
Lassen Volcanic National Park; Drakesbad
1677
Comment
CAS-BOT-BC195540
Deschampsia elongata
John Thomas Howell
1969-8-26
45954
Tulare
Mineral King
2377
Comment
CAS-BOT-BC201822
Deschampsia elongata
John Thomas Howell
1944-6-25
19660
Marin
Between Santa Venetia and Chinese Camp
Comment
SEINET199906
Deschampsia elongata
J. T. Howell
1942-6-21
16982
Marin
Carson Ridge
Comment
CAS-BOT-BC39755
Descurainia californica
John Thomas Howell
1940-7-28
15623
Fresno
Bubbs Creek. Near Sphinx Creek.
Comment
CAS-BOT-BC40944
Descurainia californica
John Thomas Howell
1944-8-16
20655
Mono
Mono Pass.
Comment
CAS-BOT-BC43047
Descurainia incisa subsp. incisa
John Thomas Howell
1951-7-17
27818
Tulare
Mineral King and Vicinity. White Chief Trail.
2743
Comment
CAS-BOT-BC58612
Descurainia pinnata subsp. brachycarpa
John Thomas Howell
1934-6-30
12290
Modoc
Duncan Horse Camp.
1355
Comment
CAS-BOT-BC43235
Descurainia pinnata subsp. brachycarpa
John Thomas Howell; Gordon H. True
1968-5-13
44280
Tulare
Sierra Nevada. Kern Plateau. North Meadow Creek.
2042
Comment
CAS-BOT-BC43305
Descurainia pinnata subsp. glabra
John Thomas Howell
1958-5-24
33322
Inyo
Sierra Nevada. Whitney Portal Road.
1920
Comment
CAS-BOT-BC43382
Descurainia pinnata subsp. glabra
John Thomas Howell
1928-3-11
3410
San Bernardino
West end of Morango Valley, south Mojave Desert.
914
Comment
CAS-BOT-BC43457
Descurainia sophia
John Thomas Howell
1962-4-9
37081
Kern
Sierra Nevada. Kernville.
Comment
CAS-BOT-BC43536
Descurainia sophia
John Thomas Howell; Gordon H. True
1967-7-4
43967
Tulare
Sierra Nevada. Kern Plateau. Troy Meadow.
2377
Comment
CAS-BOT-BC43431
Descurainia sophia
John Thomas Howell
1972-4-24
48676
Stanislaus
4 miles northwest of Ingram Creek, west side of San Joaquin Valley.
30
Comment
RSA316
Dicentra chrysantha
J. T. Howell
1927-7-9
345
San Bernardino
Baldwin Lake
2012
Comment
CAS-BOT-BC208933
Dichanthelium acuminatum subsp. acuminatum
John Thomas Howell; Gordon H. True
1966-7-10
41597
Tulare
On bank of Kern River at Roads End - Sierra Nevada
1066
Comment
CAS-BOT-BC254477
Dichanthelium acuminatum subsp. acuminatum
John Thomas Howell
1937-6-6
13032
Sonoma
Pitkin Marsh
Comment
CAS-BOT-BC500808
Dichelostemma capitatum
John Thomas Howell
1957-5-6
32194
San Francisco
Hunter's Point
Comment
CAS-BOT-BC292269
Dieteria canescens
John Thomas Howell
1978-7-29
53348
Nevada
5 miles north of Truckee on road to Sierraville
1767
Comment
CAS-BOT-BC299783
Dieteria canescens var. canescens
John Thomas Howell
1928-6-15
3938
Inyo
Upper part of Surprise Canyon, Panamint Mts.
2377
Comment
CAS-BOT-BC299784
Dieteria canescens var. canescens
John Thomas Howell
1946-7-15
22369
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
UCD63943
Digitaria ischaemum
John Thomas Howell
1959-9-20
34642
Butte
Eastern outskirts of Oroville.
60
Comment
CAS-BOT-BC208992
Digitaria sanguinalis
John Thomas Howell
1954-11-20
30143
Alameda
1618 Milvia St., Berkeley
Comment
CAS-BOT-BC152488
Diplacus aurantiacus
John Thomas Howell
1964-6-29
40729
San Luis Obispo
In Monterey pine forest adjacent to the Protestant Cemetery, about 1 mile north of Cambria
Comment
CAS-BOT-BC152999
Diplacus constrictus
John Thomas Howell
1930-5-15
5122
Kern
Hills near Glenville [Glennville], Greenhorn Range
975
Comment
CAS-BOT-BC151950
Diplacus douglasii
John Thomas Howell
1941-4-6
16177
Contra Costa
Near Deer Flat, Mt. Diablo
Comment
CAS-BOT-BC153315
Diplacus kelloggii
John Thomas Howell
1955-6-5
30284
Tuolumne
Twain Harte
1127
Comment
CAS-BOT-BC153410
Diplacus layneae
John Thomas Howell
1940-5-19
15461
Napa
Upper St. Helena Creek
Comment
CAS-BOT-BC153476
Diplacus layneae
John Thomas Howell
1954-6-6
29976
Tuolumne
Twain Harte
1127
Comment
CAS-BOT-BC153512
Diplacus leptaleus
John Thomas Howell
1958-7-20
33699
Fresno
Granite Basin
3048
Comment
CAS-BOT-BC151810
Diplacus mephiticus
John Thomas Howell
1963-7-11
39820
Nevada
Sagebrush flat, 3 miles northeast of Truckee - Sierra Nevada
1767
Comment
CAS-BOT-BC153940
Diplacus pulchellus
John Thomas Howell
1955-6-3
30263
Tuolumne
Between Sugar Pine and Long Barn
1493
Comment
CAS-BOT-BC153966
Diplacus rattanii
John Thomas Howell
1931-5-30
6613
Riverside
Santiago Peak, Santa Ana Mts.
Comment
CAS-BOT-BC151633
Diplacus torreyi
John Thomas Howell
1963-7-12
39860 A
El Dorado
3 miles sw. of Twin Bridges on road to Kyburz - Sierra Nevada
1676
Comment
UCD64182
Distichlis spicata
John Thomas Howell; Gordon H. True
1972-6-29
48925
Contra Costa
On Byron Hot Springs Road southeast of Byron.
Comment
CAS-BOT-BC136151
Dodecatheon alpinum
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-5-20
53551
Trinity
Scott Mountain summit on road from Carrville to Callahan
1645
Comment
POM203995
Dodecatheon clevelandii subsp. patulum
J. T. Howell
1933-3-31
10917
San Francisco
Bernal Heights.
Comment
CAS-BOT-BC129974
Dodecatheon redolens
John Thomas Howell
1949-7-20
25558
Tulare
Sky Blue Lake
3505
Comment
CAS-BOT-BC33312
Downingia ornatissima var. eximia
John Thomas Howell
1929-4-25
4200
Merced
5 miles NE of Merced
Comment
CAS-BOT-BC42033
Draba albertina
John Thomas Howell
1949-7-19
25500
Tulare
Rock Creek.
3200
Comment
CAS-BOT-BC41582
Draba breweri
John Thomas Howell
1950-7-22
27226
Tulare
Sierra Nevada. Summit ridge, Olancha Peak.
3698
Comment
CAS-BOT-BC41829
Draba breweri
John Thomas Howell
1946-7-26
22718
Inyo
Mono Mesa.
3657
Comment
CAS-BOT-BC41938
Draba monoensis
John Thomas Howell
1949-8-9
26179
Tulare
Cirque Peak.
3657
Comment
CAS-BOT-BC41240
Draba oligosperma
John Thomas Howell
1946-7-27
22797 a
Fresno
Northwest of Mono Pass.
3657
Comment
CAS-BOT-BC41399
Draba verna
John Thomas Howell; Gordon H. True
1967-5-7
42189
Plumas
Sierra Nevada. Quincy.
1036
Comment
CAS-BOT-BC311788
Draba verna
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-4-29
53385
Siskiyou
Yreka
792
Comment
CAS-BOT-BC41400
Draba verna
John Thomas Howell
1976-4-2
51574
Plumas
Sierra Nevada. 2 miles northwest of Spring Garden.
1173
Comment
CAS-BOT-BC159562
Drymocallis glandulosa var. glandulosa
John Thomas Howell
1956-6-10
31550
San Francisco
North slope of Bayview Hills, San Francisco
Comment
CAS-BOT-BC159583
Drymocallis glandulosa var. glandulosa
John Thomas Howell
1961-6-21
36628
Plumas
Greenville - Sierra Nevada
1097
Comment
CAS-BOT-BC157883
Drymocallis lactea var. lactea
John Thomas Howell
1943-7-16
18425
Nevada
Boreal Ridge, West side of Donner Pass near Norden
2133
Comment
CAS-BOT-BC158356
Drymocallis lactea var. lactea
John Thomas Howell
1940-7-30
15717
Tulare
East Lake
2926
Comment
CAS-BOT-BC159308
Drymocallis lactea var. lactea
John Thomas Howell
1960-7-18
35554
Plumas
Meadow border, Drakesbad - Lassen Volcanic National Park
1828
Comment
CAS-BOT-BC143525
Drymocallis pseudorupestris var. crumiana
John Thomas Howell
1947-8-9
23963
Inyo
Seventh Lake, Big Pine Lakes
3413
Comment
CAS-BOT-BC163017
Drymocallis pseudorupestris var. saxicola
John Thomas Howell
1958-7-23
33794
Fresno
Simpson Meadow, Middle Fork of the Kings River - Sierra Nevada
1828
Comment
RSA3
Dryopteris arguta
J. T. Howell
1927-6-24
200
San Bernardino
Aliso Canyon, Rancho Santa Ana.
274
Comment
CAS-BOT-BC428003
Dudleya caespitosa
John Thomas Howell
1939-7-2
14833 A
Marin
Pirates Cove
Comment
CAS-BOT-BC428004
Dudleya caespitosa
John Thomas Howell
1946-6-30
22150
Marin
Rodeo Lagoon
Comment
UC1176732
Dudleya farinosa
John Thomas Howell
1939-7-2
14824 A
Marin
Elk Valley
Comment
GH387212
Eastwoodia elegans
J. T. Howell
1953-4-26
Unknown
east end of Corral Hollow
Comment
CAS-BOT-BC197135
Echinochloa crus-galli
John Thomas Howell
1962-7-7
38150
Kern
Kern River Canyon
304
Comment
CAS-BOT-BC197260
Echinochloa muricata var. microstachya
J. T. Howell
1988-9-29
s.n.
Marin
Vegetable garden in Terra Linda
Comment
CDA2018
Ehrharta erecta
J. T. Howell
1973-1-22
49110
San Francisco
Golden Gate Park, near Academy buildings, San Francisco.
0
Comment
CAS-BOT-BC113755
Eleocharis acicularis var. occidentalis
John Thomas Howell
1949-8-6
26086
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC113421
Eleocharis bella
John Thomas Howell
1969-9-13
46140
Sierra
Near the SW end of Webber Lake.
2072
Comment
CAS-BOT-BC113440
Eleocharis bella
John Thomas Howell
1965-9-13
41377
Fresno
Meadow at Grant Grove Lodge.
2011
Comment
CAS-BOT-BC113508
Eleocharis bella
John Thomas Howell
1960-7-22
35879
Plumas
Wet meadow, Drakesbad.
1828
Comment
CAS-BOT-BC113155
Eleocharis palustris
John Thomas Howell
1947-7-25
23619
San Bernardino
Dry Lake, San Bernardino Mts.
2773
Comment
CAS-BOT-BC112709
Eleocharis parishii
John Thomas Howell; Gordon H. True
1967-9-19
43833
Tulare
Flood-plain of Kern River South Fork, Kennedy Meadows Campground, Kern Plateau.
1859
Comment
CAS-BOT-BC113203
Eleocharis parishii
John Thomas Howell
1945-6-18
20973
Lake
Near Glenbrook
Comment
CAS-BOT-BC112710
Eleocharis parishii
John Thomas Howell; Gordon H. True
1969-9-30
46356
Tulare
Burton Camp, Cherry Hill Road, Brush Creek Canyon, Kern Plateau.
1737
Comment
CAS-BOT-BC112057
Eleocharis quinqueflora
John Thomas Howell
1943-7-24
18781
Nevada
Frog Lake
Comment
CAS-BOT-BC112151
Eleocharis quinqueflora
John Thomas Howell
1948-7-30
25196
Tulare
John Muir Trail west of Center Peak.
3200
Comment
UC698626
Eleocharis quinqueflora
John Thomas Howell
1940-8-9
16082
Fresno
Bullfrog Lake
Comment
UCD62750
Elymus X hansenii
John Thomas Howell
20-23 Jun 1977
52415
Plumas
On the peninsula of Lake Almanor.
1371
Comment
CAS-BOT-BC237637
Elymus X saundersii
John Thomas Howell
1947-8-5
23783
Inyo
Big Pine Lakes. Fifth Lake
3352
Comment
GH365154
Elymus X saundersii
J. T. Howell
1944-8-7
20067
Unknown
Flats northeast of highway bridge, Tuolumne Meadows
Comment
SEINET196518
Elymus X saundersii
John Thomas Howell
1945-9-27
21519
Tuolumne
Mt. Dana, 10,500 ft. Tuolmne Co.
Comment
UC1106121
Elymus californicus
John Thomas Howell
1941-7-6
16356
Marin
Mount Tamalpais, Kent Trail Mount Tamalpais; , Kent Trail
Comment
CAS-BOT-BC225743
Elymus elymoides
John Thomas Howell
1969-8-25
45915 A
Tulare
Near site of former store, Mineral King, Sierra Nevada
2377
Comment
CAS-BOT-BC225744
Elymus elymoides
John Thomas Howell
1949-7-22
25597
Tulare
Mt. Guyot
3749
Comment
CAS-BOT-BC227932
Elymus elymoides
John Thomas Howell
1960-8-19
36165
Tehama
Lassen Volcanic National Park. Brokeoff Mt. Trail
2682
Comment
RSA44079
Elymus elymoides
J. T. Howell
1947-8-5
23784
Inyo
Fifth Lake, Big Pine Lakes.
3354
Comment
UCD61543
Elymus elymoides
John Thomas Howell
1944-8-9
20177
Tuolumne
Near Parsons Lodge, Tuolumne Meadows.
Comment
SEINET11690147
Elymus glaucus
J. T. Howell, Knight, W.; Knight, I.
1987-1
6229
Sonoma
Todd Road Preserve
24
Comment
CAS-BOT-BC203770
Elymus glaucus subsp. glaucus
John Thomas Howell
1951-7-18
27871
Tulare
Mineral King and Vicinity. Franklin Pass Trail
2438
Comment
CAS-BOT-BC206516
Elymus glaucus subsp. glaucus
John Thomas Howell; Gordon H. True
1967-7-9
43256
Plumas
North Fork of Feather River 4.3 miles southwest of Caribou - Sierra Nevada
792
Comment
CAS-BOT-BC203807
Elymus glaucus subsp. virescens
John Thomas Howell
1943-7-4
18249
Marin
Ledum Swamp on road to Point Reyes
Comment
UCD62575
Elymus repens
John Thomas Howell
1956-7-1
31658
San Francisco
3rd and 4th streets, San Francisco.
Comment
UCD51690
Elymus spicatus
John Thomas Howell
1976-7-20
52002
Lassen
about 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek.
1432
Comment
CAS-BOT-BC204258
Elymus trachycaulus subsp. subsecundus
John Thomas Howell
1958-7-22
33774
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC204368
Elymus trachycaulus subsp. trachycaulus
John Thomas Howell
1944-8-10
20271
Mono
Glacier Canyon, Mt. Dana
Comment
CAS-BOT-BC213518
Elymus trachycaulus subsp. trachycaulus
John Thomas Howell; Gordon H. True
1967-9-19
43866
Tulare
Flood-plain of Kern River South Fork, Kennedy Meadows Campground, Kern Plateau - Sierra Nevada
1859
Comment
SEINET7292779
Elysitanion hansenii
John Thomas Howell
1969-1
46039
Tulare
Sierra Nevada; Mineral King; Near the pack station
2377
Comment
CAS-BOT-BC81518
Ephedra californica
John Thomas Howell
1970-11-7
47498
Kern
mouth of Kern River Canyon
213
Comment
CAS-BOT-BC81527
Ephedra californica
John Thomas Howell
1962-7-7
38139
Kern
Entrance to Kern River Canyon
213
Comment
CAS-BOT-BC81602
Ephedra californica
John Thomas Howell
1928-3-11
3409
San Bernardino
east end of Morongo Valley, s. Mojave Desert
914
Comment
GH356629
Ephedra nevadensis
J. T. Howell
1958-5-28
33557
Unknown
Bishop Creek
1950
Comment
CAS-BOT-BC81942
Ephedra viridis
John Thomas Howell
1928-5-25
3824
Kern
Frazier Mt. Park, Mt. Pinos region
Comment
CAS-BOT-BC165897
Epilobium
John Thomas Howell
1963-8-20
40196
Inyo
Whitney Portal road
2346
Comment
RSA510
Epilobium canum subsp. canum
J. T. Howell
1928-6-30
1025
Ventura
Santa Susana Pass.
457
Comment
RSA511
Epilobium canum subsp. canum
J. T. Howell
1927-7-26
480
Orange
Claymine Canon near Sierra Peak.
244
Comment
RSA515
Epilobium canum subsp. canum
J. T. Howell
1927-8-16
2993
Santa Barbara
Gaviota Pass
46
Comment
RSA31381
Epilobium foliosum
J. T. Howell
1944-5-21
19486
Marin
Canyon below Phoenix Lake, Mt. Tamalpais
Comment
RSA34674
Epilobium lactiflorum
J. T. Howell
1946-7-23
22678
Fresno
Fourth Recess.
3049
Comment
CAS-BOT-BC57133
Equisetum X ferrissii
John Thomas Howell; Gordon H. True
1966-7-10
41595
Tulare
On bank of Kern River at Roads End
1066
Comment
CAS-BOT-BC57007
Equisetum arvense
John Thomas Howell
1977-6-21
52385
Plumas
Seneca
1097
Comment
CAS-BOT-BC57023
Equisetum arvense
John Thomas Howell
1957-9-16
32963
San Francisco
Strybing Arboretum, Golden Gate Park
Comment
CAS-BOT-BC57906
Equisetum arvense
John Thomas Howell
1944-5-28
19516
Marin
Between Manzanita and Almonte.
Comment
CAS-BOT-BC57272
Equisetum laevigatum
John Thomas Howell
1958-5-28
33611
Inyo
Bishop Creek
1524
Comment
CAS-BOT-BC57384
Equisetum laevigatum
John Thomas Howell
1927-6-6
2441
Orange
Santa Ana River bottom, Santa Ana Canyon
152
Comment
CAS-BOT-BC57238
Equisetum laevigatum
John Thomas Howell
1930-4-13
4691
Calaveras
North Fork of Calaveras River 2 miles west of San Andreas
Comment
SEINET6031530
Equisetum laevigatum
J. T. Howell, G. H. True, Jr.
1968-6-10
44548
Plumas
Quincy
1036
Comment
CAS-BOT-BC213555
Eragrostis hypnoides
John Thomas Howell
1976-10-29
52272
El Dorado
Bottom of Folsom Lake at Brown's Ravine boat landing - Sierra Nevada
121
Comment
CAS-BOT-BC204554
Eragrostis mexicana subsp. virescens
John Thomas Howell
1958-5-23
33216
Inyo
Lone Pine
1127
Comment
CAS-BOT-BC204599
Eragrostis mexicana subsp. virescens
John Thomas Howell
1977-8-11
52669
Plumas
Canyon of Little Last Chance Creek between Chilcoot and Frenchmans Reservoir
1676
Comment
SEINET12875575
Eremogone congesta var. subcongesta
John Thomas Howell
1977-1
52401
Lassen
North end of Eagle Lake
1585
Comment
CAS-BOT-BC174280
Eremogone congesta var. suffrutescens
John Thomas Howell
1949-8-12
26253
Inyo
Cottonwood Creek
3108
Comment
SEINET12875650
Eremogone ferrisiae
John Thomas Howell, Gordon H. True
1967-1
43097
Tulare
Near road bridge on South Fork of Kern River in Kennedy Meadows. Kern Plateau.
1890
Comment
CAS-BOT-BC514499
Eriastrum eremicum subsp. eremicum
John Thomas Howell
1927-7-9
2669
San Bernardino
Between Deadman's Point and Box S Ranch, Mojave Desert
914
Comment
CAS-BOT-BC286684
Ericameria bloomeri
John Thomas Howell
1951-8-21
28260
Sierra
East side of Yuba Pass
1828
Comment
RSA201300
Ericameria bloomeri
J. T. Howell
1960-8-20
36282
Plumas
Kelly Camp, near Drakesbad.
1616
Comment
CAS-BOT-BC135992
Ericameria cooperi var. cooperi
John Thomas Howell
1962-5-21
37239
Kern
East side of Walker Pass - Sierra Nevada
1402
Comment
CAS-BOT-BC136013
Ericameria cooperi var. cooperi
John Thomas Howell
1958-5-26
33467
Inyo
4 miles w. of Independence - Sierra Nevada
1524
Comment
CAS-BOT-BC286740
Ericameria cuneata var. cuneata
John Thomas Howell
1962-9-21
38676
Kern
Kern River Canyon
304
Comment
CAS-BOT-BC286766
Ericameria cuneata var. cuneata
John Thomas Howell
1931-10-11
8144
Mariposa
Wawona Point
Comment
CAS-BOT-BC292852
Ericameria cuneata var. cuneata
John Thomas Howell; Gordon H. True
1967-5-29
42362
Tulare
Near north end of Lamont Meadow on road to Chimney Meadow, Kern Plateau, Sierra Nevada
1859
Comment
CAS-BOT-BC298944
Ericameria nauseosa var. ceruminosa
John Thomas Howell
1967-11-6
44177
Kern
4.5 miles W of Wofford, Greenhorn Mts
1219
Comment
JEPS75275
Ericameria nauseosa var. ceruminosa
John Thomas Howell
1970-11-8
47543
Kern
near South Fork Kern River bridge on road from Weldon to Kernville (nw of Weldon); Sierra Nevada
792
Comment
CAS-BOT-BC298017
Ericameria nauseosa var. mohavensis
John Thomas Howell
1927-11-12
3189
Kern
Red Rock Canyon
762
Comment
CAS-BOT-BC299145
Ericameria nauseosa var. mohavensis
John Thomas Howell
1970-11-8
47506
Kern
S slope above E arm of Lake Isabella, 6.5 miles from South Fork Kern RIver bridge on road from Weldon to Kernville
792
Comment
CAS-BOT-BC298099
Ericameria nauseosa var. mohavensis
John Thomas Howell; Gordon H. True
1969-9-29
46264
Tulare
Kern Plateau. Cherry Hill Rd at Rincon Trail, Brush Creek Canyon
1432
Comment
CAS-BOT-BC294186
Ericameria nauseosa var. speciosa
John Thomas Howell; Gordon H. True
1973-8-1
50216
Lassen
Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville
2164
Comment
CAS-BOT-BC294326
Ericameria nauseosa var. speciosa
John Thomas Howell
1949-7-30
25920
Tulare
At Tunnel
2743
Comment
CAS-BOT-BC294210
Ericameria nauseosa var. speciosa
John Thomas Howell
1965-9-15
41388
Mono
Near top of Conway Grade
2438
Comment
CAS-BOT-BC293046
Ericameria parryi var. vulcanica
John Thomas Howell
1962-9-24
38861
Kern
Near Tiger Flat, Greenhorn Mountains
1981
Comment
CAS-BOT-BC293107
Ericameria parryi var. vulcanica
John Thomas Howell
1950-7-25
27338 A
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC293112
Ericameria parryi var. vulcanica
John Thomas Howell
1950-7-17
26999
Tulare
Trail from Bakeoven to Templeton Meadows
2682
Comment
UC904952
Ericameria parryi var. vulcanica
John Thomas Howell
1949-7-26
25798
Tulare
Sierra Nevada, Golden Trout Creek
2941
Comment
CAS-BOT-BC293322
Ericameria teretifolia
John Thomas Howell
1964-10-23
40994
Inyo
Sierra on Whitney Portal road
1950
Comment
JEPS75285
Ericameria teretifolia
John Thomas Howell
1964-10-23
40994
Inyo
on Whitney Portal road, apron of Sierra Sierra Nevada
1950
Comment
CAS-BOT-BC293426
Erigeron algidus
John Thomas Howell
1946-7-15
22380
Inyo
Between Mosquito Flat and Ruby Lake, Rock Creek Lake Basin
Comment
CAS-BOT-BC293497
Erigeron aliceae
John Thomas Howell
1939-8-2
14879
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
CAS-BOT-BC294663
Erigeron breweri var. breweri
John Thomas Howell
1942-8-5
17705
Tulare
Between Big Arroyo and Chagoopa Plateau
Comment
CAS-BOT-BC294682
Erigeron breweri var. breweri
John Thomas Howell
1924-7-28
542
Mariposa
Buck Camp Trail between Chilnualna Creek and Johnson Lake, Yosemite Park
Comment
CAS-BOT-BC296748
Erigeron coulteri
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-12
54508
Mono
Rock Creek Road to Rock Creek Lake Basin, Sierra Nevada
2849
Comment
CAS-BOT-BC234207
Erigeron divergens
John Thomas Howell
1937-7-21
13223
Trinity
Big Flat
Comment
UCD131896
Erigeron floribundus
John Thomas Howell
1975-9-25
51508
San Mateo
San Bruno Mountain.
396
Comment
RSA834
Erigeron foliosus
J. T. Howell
1927-7-10
369
San Bernardino
Big Bear, San Bernardino Mountains.
1828
Comment
CAS-BOT-BC308778
Erigeron foliosus var. foliosus
John Thomas Howell; Gordon H. True
1967-8-8
43559
Tulare
5.7 miles from Lamont Meadow on road to Long Valley, Kern Plateau, Sierra Nevada
1584
Comment
CAS-BOT-BC300875
Erigeron glacialis var. glacialis
John Thomas Howell
1948-7-26
25011
Tulare
Bubbs Creek Canyon
3139
Comment
CAS-BOT-BC295140
Erigeron inornatus
John Thomas Howell
1943-8-4
19036
Glenn
Summit ridge north of Black Butte
Comment
CAS-BOT-BC295488
Erigeron lassenianus var. lassenianus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-23
54168
Plumas
3.25 miles west of Round Valley Reservoir dam
1633
Comment
CAS-BOT-BC295232
Erigeron lonchophyllus
John Thomas Howell
1948-7-29
25169
Fresno
Bubbs Creek Canyon
2834
Comment
CAS-BOT-BC295260
Erigeron lonchophyllus
John Thomas Howell
1949-8-13
26260
Inyo
Little Cottonwood Creek
3048
Comment
POM260848
Erigeron lonchophyllus
J. T. Howell
1940-7-30
15727
Tulare
East Lake
2927
Comment
CAS-BOT-BC295740
Erigeron petrophilus var. petrophilus
John Thomas Howell
1942-7-12
17034
Marin
Northside Trail, Mt. Tamalpais
Comment
CAS-BOT-BC49585
Erigeron pumilus subsp. intermedius
John Thomas Howell
1934-7-1
12320
Modoc
Duncan Horse Camp.
1355
Comment
CAS-BOT-BC300319
Erigeron vagus
John Thomas Howell
1946-7-18
22509
Fresno
West slope of Mt. Starr
Comment
SBBG28207
Eriogonum angulosum
J. T. Howell
1933-8-18
11588
Monterey
6 mi W of Jamesburg
Comment
CAS-BOT-BC248101
Eriogonum angulosum
John Thomas Howell
1932-10-16
10833
Alameda
8 miles from Livermore on Tesla Road
Comment
CAS-BOT-BC248491
Eriogonum angulosum
John Thomas Howell
1933-8-18
11588
Monterey
6 miles west of Jameburg [Jamesburg], Santa Lucia Mts.
Comment
CAS-BOT-BC248759
Eriogonum argillosum
John Thomas Howell
1933-4-23
11158
San Benito
11 miles from Hernandez, on road to San Benito
Comment
CAS-BOT-BC254170
Eriogonum baileyi var. baileyi
John Thomas Howell
1962-5-21
37181
Kern
Northeast of Lake Isabella, Sierra Nevada
792
Comment
CAS-BOT-BC241609
Eriogonum baileyi var. baileyi
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-10
54438
Mono
Walker
1645
Comment
CAS-BOT-BC241610
Eriogonum baileyi var. baileyi
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-10
54439
Mono
East side of Bridgeport Reservoir, 1.5 miles north of Bridgeport
1969
Comment
CAS-BOT-BC250066
Eriogonum compositum var. compositum
John Thomas Howell
1939-8-2
14869
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
CAS-BOT-BC256117
Eriogonum deflexum var. deflexum
John Thomas Howell
1928-11-4
4083
Riverside
Hidden Spring Canyon, 13 miles se of Mecca
Comment
CAS-BOT-BC246497
Eriogonum douglasii var. meridionale
John Thomas Howell; Gordon H. True
1972-5-12
7128
Nevada
Boca-Stampede Dam Road, 5.2 miles north of Boca
1767
Comment
UC517496
Eriogonum elongatum var. elongatum
John Thomas Howell
1933-8-17
11529
San Benito
The Pinnacles
Comment
UC1042553
Eriogonum esmeraldense
John Thomas Howell
1950-8-29
27459
Mono
summit between Crestview and Mono Lake; Sierra Nevada
2438
Comment
CAS-BOT-BC253215
Eriogonum fasciculatum var. fasciculatum
John Thomas Howell
1928-4-21
3750
Ventura
Pt. Mugu
Comment
A364117
Eriogonum fasciculatum var. foliolosum
J. T. Howell
1933-8-18
11567
Unknown
17 miles east of Jamesburg, Santa Lucia Mts.
Comment
CAS-BOT-BC253377
Eriogonum fasciculatum var. polifolium
John Thomas Howell
1927-6-12
2530
San Bernardino
Half way between Victorville and Hesperia, Mojave Desert
822
Comment
CAS-BOT-BC250387
Eriogonum gracile
John Thomas Howell
1929-7-20
4330
Contra Costa
2 miles s. of Oakley
Comment
CAS-BOT-BC250406
Eriogonum gracile
John Thomas Howell
1933-8-18
11561 A
Monterey
6 miles w. of Greenfield, Santa Lucia Mts.
Comment
RSA230
Eriogonum gracile var. gracile
J. T. Howell
1927-7-24
471
Orange
Claymine Canyon near Sierra Peak.
183
Comment
RSA231
Eriogonum gracile var. gracile
J. T. Howell
1928-6-30
1021
Ventura
Santa Susana Pass.
457
Comment
CAS-BOT-BC259552
Eriogonum hirtiflorum
John Thomas Howell; Gordon H. True
1966-7-13
41867
Tulare
Brush Creek Canyon Grade on Cherry Hill Road, Sierra Nevada
1645
Comment
UC1042376
Eriogonum hirtiflorum
John Thomas Howell
1952-10-28
28903
Tulare
Eleven Range View Point Sierra Nevada, Sequoia National Park, Eleven Range View Poin
1584
Comment
CAS-BOT-BC252867
Eriogonum incanum
John Thomas Howell
1949-7-22
25622
Tulare
Mt. Guyot
3657
Comment
POM180770
Eriogonum latifolium
J. T. Howell
1930-7-27
5414
Sonoma
Exposed ocean bluff, 4 miles N of Bodega Bay.
Comment
RSA44423
Eriogonum lobbii
J. T. Howell
1947-8-6
s.n.
Inyo
Summit Lake; (moraine above), Big Pine Lakes.
3415
Comment
CAS-BOT-BC259411
Eriogonum luteolum
John Thomas Howell
1930-8-24
5459
Lake
2 miles from Middletown on road to Adams Springs
Comment
GH364289
Eriogonum luteolum
J. T. Howell
1938-7-3
13944 A
Unknown
Serpentine slope at head of Lucas Valley
Comment
POM203848
Eriogonum luteolum
J. T. Howell
1934-6-17
12244
Glenn
4 miles south of Orland
Comment
CAS-BOT-BC259504
Eriogonum luteolum var. caninum
John Thomas Howell
1927-8-22
3037
Marin
Rock Spring Trail, west of West Point, Mt. Tamalpais
548
Comment
CAS-BOT-BC263101
Eriogonum maculatum
John Thomas Howell
1962-5-21
37213
Kern
East side of Walker Pass
1466
Comment
CAS-BOT-BC268787
Eriogonum mohavense
John Thomas Howell
1930-5-12
4890
Los Angeles
2 miles north of Palmdale, Mojave Desert
Comment
CAS-BOT-BC261346
Eriogonum nudum var. deductum
John Thomas Howell
1950-7-21
27163
Tulare
Monache Mt.
2590
Comment
CAS-BOT-BC261442
Eriogonum nudum var. nudum
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-26
53024
Calaveras
Near Dorrington
1524
Comment
CAS-BOT-BC264832
Eriogonum nudum var. nudum
John Thomas Howell
1955-6-13
30337
Trinity
6 miles southwest of Douglas City
609
Comment
CAS-BOT-BC261603
Eriogonum nudum var. nudum
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-25
54314
Plumas
Near Englemine on Diamond Mt. road northeast of Taylorsville
1219
Comment
CAS-BOT-BC269751
Eriogonum nudum var. oblongifolium
John Thomas Howell
1937-7-30
13699
Trinity
Junction City
Comment
CAS-BOT-BC269872
Eriogonum nudum var. pubiflorum
John Thomas Howell
1947-8-15
24131
Inyo
Fourth Lake, Big Pine Lakes
3291
Comment
SD22295
Eriogonum nudum var. pubiflorum
John Thomas Howell
1929-11-29
4545
Mariposa
5 miles from Mt. Bullion on road to Cathay's Valley
Comment
CAS-BOT-BC266781
Eriogonum nudum var. scapigerum
John Thomas Howell
1949-7-23
25637
Tulare
Soldier Lake
3352
Comment
CAS-BOT-BC258559
Eriogonum nummulare
John Thomas Howell
1958-5-28
33546
Inyo
Bishop Creek
1950
Comment
CAS-BOT-BC266824
Eriogonum ordii
John Thomas Howell
1963-6-22
39509
Monterey
Near summit of Mustang Grade east of San Lorenzo Creek
Comment
SBBG28241
Eriogonum ordii
J. T. Howell
1937-5-20
12974
San Benito
8 mi E of Paicines
Comment
CAS-BOT-BC258711
Eriogonum ovalifolium var. nivale
John Thomas Howell
1940-8-2
15920
Tulare
West of Reflection Lake
3505
Comment
RSA235
Eriogonum parishii
J. T. Howell
1927-7-10
358
San Bernardino
Big Bear Lake.
2043
Comment
CAS-BOT-BC257867
Eriogonum parvifolium
John Thomas Howell
1929-10-11
4452
Monterey
Pt. Lobos
Comment
RSA219
Eriogonum plumatella var. jaegeri
J. T. Howell
1927-4-1
535
San Bernardino
Morongo Valley
915
Comment
CAS-BOT-BC258099
Eriogonum polypodum
John Thomas Howell
1942-7-31
17496
Tulare
Chagoopa Plateau
Comment
CAS-BOT-BC258150
Eriogonum pusillum
John Thomas Howell; Gordon H. True
1967-5-30
42451
Tulare
About 1.5 miles from Lamont Meadow on road to Long Valley, Kern Plateau
1737
Comment
RSA285064
Eriogonum pusillum
J. T. Howell
1958-5-28
s.n.
Inyo
Bishop Creek.
1951
Comment
CAS-BOT-BC258501
Eriogonum roseum
John Thomas Howell
1970-11-8
47509
Kern
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-BC267689
Eriogonum roseum
John Thomas Howell; Gordon H. True
1966-7-13
41872
Tulare
Brush Creek Canyon Grade on Cherry Hill Road, Sierra Nevada
1402
Comment
CAS-BOT-BC268327
Eriogonum roseum
John Thomas Howell
1962-9-26
38945
Kern
2.5 miles east of Glennville, Greenhorn Mountains
1066
Comment
CAS-BOT-BC268451
Eriogonum saxatile
John Thomas Howell
1963-8-20
40197
Inyo
Whitney Portal road
2346
Comment
CAS-BOT-BC268606
Eriogonum spergulinum var. pratense
John Thomas Howell
1950-7-22
27180
Tulare
Olancha Peak
3261
Comment
CAS-BOT-BC271880
Eriogonum spergulinum var. spergulinum
John Thomas Howell
1958-8-9
34248
Madera
Miller Meadow
2103
Comment
CAS-BOT-BC271950
Eriogonum spergulinum var. spergulinum
John Thomas Howell; Gordon H. True
1966-7-11
41719
Tulare
Horse Meadow, Kern Plateau
2255
Comment
CAS-BOT-BC271892
Eriogonum spergulinum var. spergulinum
John Thomas Howell
1958-7-20
33682
Fresno
Lower Tent Meadow, Copper Creek Canyon
2377
Comment
CAS-BOT-BC262768
Eriogonum strictum var. proliferum
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50658
Lassen
Summit ridge of Diamond Mt.
2346
Comment
CAS-BOT-BC267826
Eriogonum umbellatum var. bahiiforme
John Thomas Howell
1943-8-10
19265
Glenn
Black Butte
Comment
CAS-BOT-BC268011
Eriogonum umbellatum var. furcosum
John Thomas Howell
1958-8-17
34552
Madera
The Niche, East Fork of Granite Creek
2438
Comment
CAS-BOT-BC268222
Eriogonum umbellatum var. munzii
John Thomas Howell
1927-7-9
2721
San Bernardino
South end of Baldwin Lake, San Bernardino Mts.
2011
Comment
CAS-BOT-BC262098
Eriogonum umbellatum var. nevadense
John Thomas Howell
1942-7-25
17144
Tulare
Mineral King
Comment
CAS-BOT-BC265185
Eriogonum umbellatum var. nevadense
John Thomas Howell; Gordon H. True
1971-7-15
48544
Tulare
On Dome Lands Trail about 0.5 miles south of Church Dome, Kern Plateau, Sierra Nevada
2316
Comment
SEINET5331927
Eriogonum umbellatum var. nevadense
J. T. Howell
1963-8-22
40270
Mono
2.5 miles south of Crestview.
Comment
CAS-BOT-BC265212
Eriogonum umbellatum var. speciosum
John Thomas Howell
1951-8-19
28160
Butte
2 miles west of Pulga, Sierra Nevada
365
Comment
CAS-BOT-BC262363
Eriogonum vimineum
John Thomas Howell
1934-6-10
11893
Lassen
Horse Lake
Comment
CAS-BOT-BC264136
Eriogonum vimineum
John Thomas Howell
1951-8-20
28202
Plumas
Indian Valley, Sierra Nevada
1066
Comment
CAS-BOT-BC261852
Eriogonum wrightii var. subscaposum
John Thomas Howell
1940-8-10
16140
Fresno
Zumwalt Meadows, Kings River Canyon
Comment
CAS-BOT-BC298462
Eriophyllum ambiguum var. paleaceum
John Thomas Howell
1958-5-23
33200
Kern
10 miles E of Onyx
1036
Comment
UC517524
Eriophyllum ambiguum var. paleaceum
John Thomas Howell
1930-5-13
5403
Kern
7 mi above Kernville; Kern Canyon
844
Comment
CAS-BOT-BC297394
Eriophyllum confertiflorum
John Thomas Howell
1927-6-12
2537
San Bernardino
Near Cajon Pass summit, old road to Hesperia
1097
Comment
CAS-BOT-BC297867
Eriophyllum confertiflorum
John Thomas Howell; Gordon H. True
1971-6-15
47717
Kern
0.5 mile S of Bodfish on road to Havilah
1097
Comment
CAS-BOT-BC297907
Eriophyllum confertiflorum
John Thomas Howell
1930-5-13
5027
Kern
Kern Canyon, 7 miles above Kernville
844
Comment
UCD132123
Eriophyllum jepsonii
John Thomas Howell
1950-7-5
26636
Contra Costa
above Nortonville.
Comment
CAS-BOT-BC301392
Eriophyllum lanatum var. grandiflorum
John Thomas Howell; R. C. Barneby
1954-5-12
29504
Mariposa
Near top of Bagby Grade
579
Comment
RSA44445
Eriophyllum lanatum var. integrifolium
J. T. Howell
1947-8-11
23992
Inyo
Baker Lakes
3506
Comment
POM259748
Eryngium aristulatum var. aristulatum
J. T. Howell
1934-3-26
11806
Sonoma
Summit of Bennet Valley road from Glen Ellen to Santa Rosa
Comment
UC874916
Eryngium articulatum
John Thomas Howell
1938-8-28
14589
Solano
near Suisun (Suisun Marshes); ; <Note on label: Topotype; not in Types Database>
Comment
CAS-BOT-BC211104
Eryngium pinnatisectum
John Thomas Howell
1962-6-15
37419
Butte
5 miles west of Oroville
Comment
GH379380
Erysimum capitatum
J. T. Howell
1938-4-10
13746
Unknown
Near Midway
Comment
CAS-BOT-BC58573
Erysimum capitatum var. capitatum
John Thomas Howell
1934-6-30
12285
Modoc
Duncan Horse Camp.
1355
Comment
CAS-BOT-BC55123
Erysimum perenne
John Thomas Howell
1940-8-1
15860
Tulare
Between Reflection Lake and Harrison Pass.
Comment
CAS-BOT-BC153806
Erythranthe filicaulis
John Thomas Howell
1975-6-4
51029
Tuolumne
Ackerson Meadow south of Mather
1524
Comment
CAS-BOT-BC150231
Erythranthe nasuta
John Thomas Howell
1967-6-23
42733
Plumas
Lewisia Rock 3.5 miles sw. of Belden, Feather River Canyon
609
Comment
CAS-BOT-BC505243
Erythronium grandiflorum
John Thomas Howell
1951-6-28
27684
Plumas
Eureka Park
2133
Comment
CAS-BOT-BC403282
Eschscholzia californica
John Thomas Howell
1965-6-15
41347
Monterey
Near the Monterey Airport on Salinas road about 4 miles east of Monterey
Comment
CAS-BOT-BC403331
Eschscholzia californica
John Thomas Howell
1963-6-22
39570
Monterey
Priest Valley
685
Comment
CAS-BOT-BC403715
Eschscholzia californica
John Thomas Howell
1955-6-12
30322
Trinity
Weaverville
609
Comment
RSA22047
Eschscholzia californica var. peninsularis
J. T. Howell
1938-4-10
13759
San Joaquin
Hospital Canyon
Comment
CAS-BOT-BC76452
Eschscholzia lemmonii
John Thomas Howell
1963-6-21
39493
Monterey
Mustang Creek east of San Lorenzo Creek.
Comment
CAS-BOT-BC170785
Eucnide urens
John Thomas Howell
1928-6-16
3960
Inyo
Surprise Canyon, Panamint Mts.
975
Comment
CAS-BOT-BC206914
Euonymus occidentalis
Thomas Howell
1880-6-1
s.n.
Unknown
Unspecified
Comment
CDA4818
Euphorbia helioscopia
J. T. Howell
1946-4-5
21595
San Francisco
Southeast slope of Twin Peaks, San Francisco.
0
Comment
CAS-BOT-BC202401
Euphorbia ocellata
John Thomas Howell
1962-6-2
37413
Merced
Merced
Comment
CAS-BOT-BC207104
Euphorbia ocellata
John Thomas Howell; Gordon H. True
1967-7-6
43218
Tulare
From northern 1/3 of area, Vernal pool natural area in Valley Grassland, about 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC310547
Eurybia integrifolia
John Thomas Howell
1969-9-13
46126
Sierra
North shore of Webber Lake
2064
Comment
CAS-BOT-BC310555
Eurybia integrifolia
John Thomas Howell
1969-8-27
45986
Tulare
Near Mineral King in Glacial Valley below White Chief Mine
2895
Comment
CAS-BOT-BC312179
Eurybia radulina
John Thomas Howell
1957-7-28
32826
San Francisco
Bayview Hills, San Francisco
Comment
RSA942
Euthamia occidentalis
J. T. Howell
1927-10-22
765
Orange
Santa Ana River bottom, Rancho Santa Ana
152
Comment
CAS-BOT-BC413862
Fallopia convolvulus
John Thomas Howell
1962-6-15
37463
Butte
Magalia
731
Comment
CAS-BOT-BC278467
Festuca idahoensis
John Thomas Howell; Gordon H. True
1973-7-31
50101
Plumas
Summit ridge of Thompson Peak, Diamond Range
2194
Comment
SBBG39997
Festuca myuros var. hirsuta
J. T. Howell
1963-7-12
El Dorado
3 mi SW of Twin Bridges on rd to Kyburz
1676
Comment
CAS-BOT-BC278874
Festuca occidentalis
John Thomas Howell
1937-7-22
13259
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC278905
Festuca occidentalis
John Thomas Howell
1953-5-25
29039
Tuolumne
Twain Harte
1127
Comment
UC1106094
Festuca roemeri
John Thomas Howell
1943-5-15
18084
Marin
Tiburon Peninsula
Comment
UCD66276
Festuca roemeri
John Thomas Howell
1956-6-17
31564
San Francisco
Summit ridge of Bayview Hills.
Comment
CAS-BOT-BC278581
Festuca saximontana
John Thomas Howell
1947-7-23
23554
San Bernardino
Dollar Lake, San Bernardino Mts.
2865
Comment
CAS-BOT-BC282554
Festuca viridula
John Thomas Howell
1943-7-23
18720
Nevada
Between Donner Pass and West Lake
Comment
RSA1066
Forestiera pubescens
J. T. Howell
1927-8-17
645
Monterey
Bradley
165
Comment
CAS-BOT-BC453526
Fragaria chiloensis
John Thomas Howell
1926-2-21
1636
Marin
Ocean bluffs at Point Reyes
Comment
CAS-BOT-BC457934
Fragaria vesca subsp. californica
John Thomas Howell
1945-6-3
20931
Marin
Shell Beach
Comment
A425903
Frangula californica
J. T. Howell
1938-7-3
13955
Unknown
3 miles n. of Sebastopol
Comment
CAS-BOT-BC52585
Frangula californica subsp. californica
John Thomas Howell
1966-5-25
41546
Marin
John Thomas Howell Botanical Garden, Tiburon
Comment
CAS-BOT-BC53910
Frangula californica subsp. cuspidata
John Thomas Howell; Gordon H. True
1967-9-18
43785
Tulare
Sierra Nevada - Kern Plateau - Hillside spring, Lamont Meadow
1645
Comment
CAS-BOT-BC53970
Frangula californica subsp. cuspidata
John Thomas Howell
1970-9-22
47275
Kern
Sierra Nevada - Along kern River between kernville and River Kern
822
Comment
CAS-BOT-BC53444
Frangula californica subsp. tomentella
John Thomas Howell
1930-10-12
5572
El Dorado
4 miles n. of Placerville
Comment
CAS-BOT-BC62921
Frangula californica subsp. tomentella
John Thomas Howell
1930-9-28
5490
Contra Costa
Marsh Creek Rd., e. of Clayton.
Comment
CAS-BOT-BC55684
Frangula purshiana
John Thomas Howell
1963-6-3
39395
Plumas
Butterfly Valley
Comment
CAS-BOT-BC55811
Frangula rubra subsp. yosemitana
John Thomas Howell
1923-7-2
107
Mariposa
Stella Lake, Wawona
1219
Comment
CAS-BOT-BC223665
Frankenia salina
John Thomas Howell; Gordon H. True
1967-8-10
43705
Tulare
From northern 1/3 of area. About 4 1/2 miles east-northeast of Pixley
83
Comment
RSA244714
Frankenia salina
J. T. Howell, G. H. True
1972-6-29
48919
Contra Costa
On Byron Hot Springs Road SE of Byron.
Comment
CAS-BOT-BC217700
Fraxinus latifolia
John Thomas Howell
1962-7-9
38362
Kern
Kern river bottom just below Isabella Dam, Sierra Nevada
762
Comment
CAS-BOT-BC504437
Fritillaria atropurpurea
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49174
Lassen
Elysian Valley northwest of Janesville, Sierra Nevada
1325
Comment
CAS-BOT-BC504567
Fritillaria atropurpurea
John Thomas Howell
1943-7-20
18601
Nevada
Castle Peak
Comment
CAS-BOT-BC505272
Fritillaria atropurpurea
John Thomas Howell
1939-8-2
14896
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
CAS-BOT-BC130485
Fritillaria purdyi
John Thomas Howell
1931-4-4
6166
Napa
Crater Country, Mt. St. Helena region
Comment
GH385706
Galium angustifolium
J. T. Howell
1928-5-19
3792
Unknown
Anacapa Island
Comment
CAS-BOT-BC124041
Galium angustifolium subsp. foliosum
John Thomas Howell
1928-5-19
3792
Ventura
Anacapa Island
Comment
GH385836
Galium bolanderi
J. T. Howell
1943-8-12
19305
Unknown
Canyon of Snow Basin Creek
Comment
JEPS24064
Galium bolanderi
John Thomas Howell
1958-7-25
33917
Fresno
Simpson Meadow Sierra Nevada, Middle Fork of Kings River
1828
Comment
GH385786
Galium californicum
J. T. Howell
1931-5-25
6544
Unknown
Santa Barbara, Mission Ridge
Comment
RSA67159
Galium californicum subsp. californicum
J. T. Howell
1930-6-8
5246
Sonoma
1 mile east of Bodega Bay
Comment
CAS-BOT-BC217490
Galium clementis
John Thomas Howell
1965-5-11
41317
Monterey
East slope of Cone Peak, Santa Lucia Range
1298
Comment
RSA51416
Galium hilendiae
J. T. Howell
1949-7-17
25372
Inyo
Wonoga Peak.
2591
Comment
CAS-BOT-BC217551
Galium hypotrichium subsp. inyoense
John Thomas Howell
1950-7-12
26697
Inyo
Sage Flat to Olancha Pass
2438
Comment
JEPS58896
Galium trifidum var. pusillum
John Thomas Howell
1959-9-23
34886
Lassen
n end of lake Lassen Volcanic National Park, Juniper Lake
2057
Comment
CAS-BOT-BC303431
Gamochaeta ustulata
John Thomas Howell
1963-5-18
39346
Monterey
Near Aromas
Comment
CAS-BOT-BC186359
Garrya flavescens
John Thomas Howell
1955-5-19
30188
Monterey
Ridge between Reliz & Bear canyons, Santa Lucia Mts.
1158
Comment
CAS-BOT-BC186360
Garrya flavescens
John Thomas Howell
1955-5-18
30187 A
Monterey
West of saddle between Junipero Serra & Pinyon peaks, Santa Lucia Mts.
1463
Comment
RSA539
Garrya veatchii
J. T. Howell
1927-6-11
93
San Bernardino
Between Cajon Pass and Hesperia
1067
Comment
CAS-BOT-BC282629
Gastridium phleoides
John Thomas Howell
1946-5-16
s.n.
Marin
Angel Island
Comment
UC1106136
Gastridium ventricosum
John Thomas Howell
1940-5-26
Marin
San Anselmo Canyon
Comment
CAS-BOT-BC58885
Gaultheria shallon
John Thomas Howell
1947-5-8
23144
Marin
Sausalito
Comment
CAS-BOT-BC478866
Gayophytum
John Thomas Howell; Gordon H. True
1967-9-18
43752
Tulare
2 miles from Chimney Meadow on road to Lamont Meadow
1950
Comment
RSA51423
Gayophytum diffusum subsp. parviflorum
J. T. Howell
1949-7-29
25868
Tulare
Tunnel to Groundhog Meadow.
2683
Comment
UC1042513
Gayophytum racemosum
John Thomas Howell
1951-7-16
27786
Tulare
Mineral King Mineral King and vicinity
2377
Comment
CAS-BOT-BC303597
Geraea canescens
John Thomas Howell
1928-4-1
3582
San Bernardino
1.5 miles S of Silver Lake, N Mojave Desert
Comment
CAS-BOT-BC457020
Geum macrophyllum
John Thomas Howell
1948-7-22
24885
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC459636
Geum macrophyllum
John Thomas Howell
1940-7-30
15718
Tulare
East Lake
2926
Comment
CAS-BOT-BC459642
Geum macrophyllum
John Thomas Howell; Gordon H. True
1966-7-11
41659
Tulare
Poison Meadow, Kern PLateau
2286
Comment
CAS-BOT-BC214673
Geum triflorum
John Thomas Howell
1934-7-3
12378
Modoc
5 mi. S of Hackamore.
Comment
UCR74666
Gilia capitata subsp. abrotanifolia
J. T. Howell, G. H. True
1968-5-13
44318
Tulare
Sierra Nevada Mtns., Kern Plateau, Cherry Hill Rd., Brush Creek Canyon
1585
Comment
SD135572
Gilia interior
John Thomas Howell, Gordon H. True
1967-5-29
42354
Tulare
Sierra Nevada. Kern Plateau, midway between Chimney and Lamont meadows.
1890
Comment
JEPS33702
Gilia leptantha subsp. leptantha
John Thomas Howell
1927-7-9
2705
San Bernardino
near Whiskey Spring (Cushenberry Road, desert side San Bernardino Mts.); desert side San Bernardino Mts., nr Whiskey Spring
1676
Comment
SBBG104018
Gilia leptantha subsp. purpusii
J. T. Howell
1967-5-18
51726
Kern
old rd from Alta Sierra to Wofford Heights
Comment
CAS-BOT-BC402087
Gilia ochroleuca subsp. bizonata
John Thomas Howell; Gordon H. True
1967-7-3
42873
Tulare
Rockhouse Meadow, Kern Plateau
1706
Comment
CAS-BOT-BC266594
Githopsis pulchella
John Thomas Howell
1962-6-15
37478
Butte
Magalia
731
Comment
UCD66782
Glyceria declinata
John Thomas Howell
1957-7-22
32817
Marin
2 miles south of Olema.
Comment
CAS-BOT-BC282707
Glyceria elata
John Thomas Howell
1955-7-19
30827
Plumas
Mohawk, Sierra Nevada
1371
Comment
RSA40166
Gnaphalium luteoalbum
J. T. Howell
1943-6-29
18243
San Francisco
Concert Valley, Golden Gate Park
Comment
CAS-BOT-BC302508
Gnaphalium palustre
John Thomas Howell
1958-7-31
34148
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC302574
Gnaphalium palustre
John Thomas Howell
1967-11-5
44152 A
Kern
Bed of the Kern River 3 miles above Kernville
845
Comment
CAS-BOT-BC303192
Gnaphalium palustre
John Thomas Howell
1946-7-17
22483
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC304851
Grindelia hirsutula
J. T. Howell
1933-11-19
11724
Solano
Suisun
Comment
CAS-BOT-BC304911
Grindelia hirsutula
John Thomas Howell
1934-6-17
12239
Tehama
6 miles s. of Red Bluff
Comment
CAS-BOT-BC305016
Grindelia hirsutula
J. T. Howell
1929-12-5
4550
Stanislaus
1 1/2 miles se. of Modesto
Comment
CAS-BOT-BC305029
Grindelia hirsutula
John Thomas Howell
1929-7-21
4343
Merced
Merced River bottom at Hopeton Bridge
Comment
CAS-BOT-BC305070
Grindelia hirsutula
John Thomas Howell
1956-8-12
31749
San Francisco
San Francisco. Alemany Blvd. near Bayshore Freeway
Comment
CAS-BOT-BC314455
Grindelia hirsutula
John Thomas Howell
1933-7-23
11457
Marin
Sausalito Hills
Comment
GH417598
Grindelia hirsutula
J. T. Howell
1933-7-23
11454
Unknown
Sausilito Hills
Comment
UC1176887
Grindelia hirsutula
John Thomas Howell
1939-7-2
14834
Marin
Pirates Cove
Comment Read comments Jun 12 2012
UC897042
Grindelia hirsutula
J. T. Howell
1931-9-27
Mendocino
Point Arena
Comment
CAS-BOT-BC304950
Grindelia hirsutula
J. T. Howell
1933-7-1
11414
Ventura
2 mi. east of Ojai
Comment
CAS-BOT-BC305230
Grindelia hirsutula
John Thomas Howell
1930-9-28
5486
Contra Costa
Tunnel Road near Oak Spring
Comment
CAS-BOT-BC305245
Grindelia hirsutula
John Thomas Howell
1954-9-5
30027
Contra Costa
Marsh Creek Road 8 miles from Byron
Comment
CAS-BOT-BC304692
Grindelia squarrosa
John Thomas Howell
1964-8-10
40949
Mono
Slinkard Creek, about 1 mile west of Highway 395
1676
Comment
POM183383
Grindelia stricta var. angustifolia
J. T. Howell
1930-10-5
5524
Marin
N end of San Pablo Bay, 2 miles W of Marin-Sonoma County line.
Comment
RSA868
Gutierrezia californica
J. T. Howell
1927-11-6
802
Orange
Santa Ana River bottom, Rancho Santa Ana.
152
Comment
UCR244687
Hackelia nervosa
J. T. Howell, T. C. Fuller, G. D. Barbe
1981-6-22
54113
Plumas
Sierra Nevada Mtns., 10.6 miles NE of LaPorte on road [LaPorte Rd.] to Quincy
1890
Comment
CAS-BOT-BC231179
Hackelia sharsmithii
John Thomas Howell
1949-8-10
26211
Tulare
Upper Soldier Lake
3413
Comment Read comments Jan 17 2020
UCD85231
Hainardia cylindrica
John Thomas Howell
1930-6-8
5219
Sonoma
8 miles W of Petaluma on Bodega Road.
Comment
CAS-BOT-BC302203
Harmonia hallii
John Thomas Howell
1943-5-11
18050
Lake
2.9 miles north of Middletown
Comment
CAS-BOT-BC307267
Hazardia squarrosa var. grindelioides
John Thomas Howell
1927-10-22
3160
Orange
N. side of Santa Ana Canyon
304
Comment
CAS-BOT-BC302421
Hazardia whitneyi
John Thomas Howell
1962-9-23
38811
Kern
Near Tiger Flat, Greenhorn Mountains
1981
Comment
CAS-BOT-BC309452
Helenium puberulum
John Thomas Howell
1945-8-19
21436
Marin
Head of Drakes Bay
Comment
CAS-BOT-BC309467
Helenium puberulum
John Thomas Howell
1963-8-5
39927
Monterey
Along Watsonville-San Juan Road, about 2 miles south of Aromas
Comment
HSC1954
Helenium puberulum
J. T. Howell
1938-7-17
13984
Solano
Suisun Mashes at Suisan
Comment
CAS-BOT-BC314766
Helianthella californica var. nevadensis
John Thomas Howell
1934-7-11
12561
Lassen
Near Black's Lake
Comment
RSA874
Helianthus gracilentus
J. T. Howell
1927-7-3
256
Orange
Claymine Canyon near Sierra Peak.
305
Comment
CAS-BOT-BC310029
Hemizonella minima
John Thomas Howell
1963-7-12
39888
El Dorado
3 miles sw of Twin Bridges on road to Kyburz
1676
Comment
CAS-BOT-BC312141
Hemizonella minima
John Thomas Howell
1951-7-19
27963
Tulare
Monarch Lakes Trail, Mineral King and Vicinity
2590
Comment
CAS-BOT-BC309608
Hemizonia congesta subsp. lutescens
John Thomas Howell
1946-7-4
22171
Marin
Hicks Valley
Comment
CAS-BOT-BC309836
Hemizonia congesta subsp. luzulifolia
John Thomas Howell
1932-9-17
10763
Napa
3 miles west of Napa
Comment
POM194218
Hemizonia lutescens
J. T. Howell
1929-10-26
4541
Napa
9 miles N of Vallejo.
Comment
RSA118031
Hemizonia pentactis
J. T. Howell
1955-7-8
30583
Monterey
Jolon, Santa Lucia Mountains
Comment
CAS-BOT-BC388517
Herniaria hirsuta var. cinerea
John Thomas Howell
1965-4-25
41066
Madera
5 miles northeast of Madera
Comment
SBBG47336
Hesperis matronalis
J. T. Howell
1963-6-3
Plumas
Quincy
1036
Comment
UCD114968
Hesperis matronalis
John Thomas Howell; Gordon H. True
1967-7-11
43380
Plumas
Meadow at Quincy.
1036
Comment
CAS-BOT-BC176050
Hesperolinon clevelandii
John Thomas Howell
1933-6-4
11388
Napa
Hills east of Napa
Comment
CAS-BOT-BC179184
Hesperolinon micranthum
John Thomas Howell
1934-6-30
12258
Modoc
Duncan Horse Camp.
1355
Comment
RSA118052
Hesperolinon micranthum
J. T. Howell
1955-7-7
30573
Monterey
Dry slope near head of Mission Creek, Santa Lucia Mountains
762
Comment
CAS-BOT-BC422529
Hesperomecon linearis
John Thomas Howell
1955-5-20
30219
Monterey
3.5 miles east of summit of Jamesburg road, Santa Lucia Mts.
Comment
CAS-BOT-BC289138
Hesperostipa comata
John Thomas Howell
1958-5-28
33553
Inyo
Bishop Creek, Sierra Nevada
1950
Comment
POM273120
Hesperostipa comata subsp. comata
J. T. Howell
1945-7-22
21330
Marin
Clay slope and flat W of Mill Valley on road to Muir Woods
Comment
UCD72557
Heterocodon rariflorum
John Thomas Howell
1940-5-12
15421
Marin
Lagunitas Creek.
Comment
CAS-BOT-BC310262
Heterotheca grandiflora
John Thomas Howell
1956-12-4
31977
Mariposa
1 mile from Mariposa on road to Briceburg
Comment
CAS-BOT-BC310919
Heterotheca villosa
John Thomas Howell
1959-9-25
35011
Plumas
Sierra Valley near Beckwourth
1493
Comment
UC1347210
Heuchera merriamii
John Thomas Howell
1937-7-24
13400
Siskiyou
Caribou Basin; Salmon-Trinity Alps
1981
Comment
CAS-BOT-BC424166
Heuchera micrantha var. erubescens
John Thomas Howell; Gordon H. True
1969-6-23
45828
Plumas
Middle Fork of Feather River at Nelson Point
1249
Comment
RSA0062928
Heuchera rubescens var. alpicola
John T. Howell
1942-8-5
17676
Tulare
Between Big Arroyo and Chagoopa Plateau.
Comment
CAS-BOT-BC318797
Hieracium horridum
John Thomas Howell
1969-8-27
45976
Tulare
Near Mineral King on trail to White Chief district, Sierra Nevada
2743
Comment
CAS-BOT-BC318668
Hieracium horridum
John Thomas Howell
1946-7-22
22676
Fresno
Mono Creek Canyon
3048
Comment
CAS-BOT-BC316019
Hieracium nudicaule
John Thomas Howell
1937-7-21
13178
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC312983
Hieracium triste
John Thomas Howell
1944-8-14
20492
Tuolumne
Tuolumne Canyon above Glen Aulin
Comment
UC897858
Hieracium triste
John Thomas Howell
1939-8-8
15152
Siskiyou
Black Mts, Marble Mts
Comment
CAS-BOT-BC55300
Hirschfeldia incana
John Thomas Howell; Gordon H. True
1972-6-29
48929
Contra Costa
Byron Hot Springs Road southeast of Byron.
Comment
CAS-BOT-BC325829
Holocarpha heermannii
John Thomas Howell
1930-9-28
5487
Contra Costa
1 mile from Walnut Creek on Walnut Avenue to Concord
Comment
JEPS62611
Holocarpha virgata subsp. virgata
John Thomas Howell
1969-10-20
46472
Merced
Canal Creek on Snelling Road Canal Creek
91
Comment
RSA54095
Holodiscus discolor
J. T. Howell
1945-9-26
21508
Tuolumne
Lambert Dome, Tuolumne Meadows
Comment
CAS-BOT-BC152613
Holodiscus discolor var. discolor
John Thomas Howell
1943-8-4
19033
Glenn
Summit ridge n. of Black Butte
Comment
CAS-BOT-BC147756
Holodiscus microphyllus var. microphyllus
John Thomas Howell; Gordon H. True
1970-6-24
46691
Tulare
Summit of North Manter Pass, Big Meadow to Manter Meadow, Kern Plateau
2499
Comment
CAS-BOT-BC150202
Holodiscus microphyllus var. microphyllus
John Thomas Howell
1950-7-12
26712
Inyo
Sage Flat to Olancha Pass
2743
Comment
CAS-BOT-BC284649
Hordeum brachyantherum subsp. brachyantherum
John Thomas Howell
1960-7-18
35511
Plumas
Lassen Volcanic National Park. Drakesbad
1828
Comment
CAS-BOT-BC284995
Hordeum depressum
John Thomas Howell
1944-5-28
s.n.
Marin
Almonte
Comment
CAS-BOT-BC285050
Hordeum depressum
John Thomas Howell
1948-4-26
24278
Tulare
Near Earlimart
Comment
CAS-BOT-BC284704
Hordeum jubatum
John Thomas Howell
1960-8-20
36246
Tehama
Near Lassen Volcanic National Park. Morgan
1463
Comment
UCR168520
Hordeum marinum
J. T. Howell
1948-4-26
24287
Merced
Central Valley, Near Los Banos
37
Comment
CAS-BOT-BC285069
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1965-4-26
41141
Madera
Coarsegold
670
Comment
CAS-BOT-BC285125
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1957-5-26
32474
San Francisco
San Francisco. North base of Lone Mt.
Comment
CAS-BOT-BC285199
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1966-3-29
41433
Tulare
About 4 1/2 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC289586
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1963-5-6
39193
Monterey
Near Jolon, Santa Lucia Mts.
Comment
UCD86232
Hordeum murinum subsp. glaucum
John Thomas Howell
1955-6-12
30330
Trinity
Weaverville.
Comment
CAS-BOT-BC284871
Hordeum murinum subsp. glaucum
John Thomas Howell
1953-5-23
28999 A
Tuolumne
Sonora
548
Comment
CAS-BOT-BC289443
Hordeum murinum subsp. leporinum
John Thomas Howell
1957-5-26
32417
San Francisco
North base of Lone Mt., San Francisco
Comment
POM179705
Horkelia californica
J. T. Howell
1930-6-22
5323
Marin
Valley above Rodeo Lagoon
Comment
CAS-BOT-BC143895
Horkelia cuneata var. sericea
John Thomas Howell
1947-7-14
23333
Monterey
8 miles n. of Salinas
Comment
CAS-BOT-BC157381
Horkelia fusca
John Thomas Howell; Gordon H. True
1970-7-28
46953
Tulare
West side of Big Meadow just south of Pipe Spring, Kern Plateau
2377
Comment
UC574869
Horkelia fusca subsp. parviflora
John Thomas Howell
1937-7-21
13168
Siskiyou
near Big Flat (South Fork of Salmon River)
1524
Comment
RSA85620
Horkelia marinensis
J. T. Howell
1930-9-14
5476
Mendocino
4.5 miles north of Ft. Bragg.
Comment
JEPS44521
Horkelia rydbergii
John Thomas Howell
1927-7-10
2724
San Bernardino
e side Big Bear Lake (near Pine Knot Lodge, San Bernardino Mts.); San Bernardino Mts., e side of Big Bear Lake
2042
Comment
CAS-BOT-BC537960
Horkelia tridentata var. flavescens
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-5-20
53544
Trinity
In Canadian Zone, Scott Mt. summit on road from Carrville to Callahan.
1645
Comment
CAS-BOT-BC146327
Horkelia tularensis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-16
53871
Tulare
Bald Mountain, Kern Plateau
2834
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-BC315978
Hulsea vestita subsp. vestita
John Thomas Howell
1949-7-26
25789
Tulare
Golden Trout Creek
2941
Comment
CAS-BOT-BC312741
Hymenoxys hoopesii
John Thomas Howell
1977-8-3
52576
Alpine
Ebbetts Pass Road, 4.5 miles east of Lake Alpine
Comment
CAS-BOT-BC312779
Hymenoxys hoopesii
John Thomas Howell
1942-7-26
17198
Tulare
Mineral King
Comment
CAS-BOT-BC312825
Hymenoxys hoopesii
John Thomas Howell; Gordon H. True
1966-7-11
41642
Tulare
Poison Meadow, Kern Plateau
2286
Comment
SD130459
Hypericum formosum var. scouleri
John Thomas Howell, Gordon H. True and Margaret Williams
1973-6-28
49436
Lassen
Elysian Valley, west of Janesville.
1326
Comment
RSA223636
Hypericum perforatum
J. T. Howell
1956-6-3
31460
San Francisco
Embarcadero and Front Street
Comment
CAS-BOT-BC88614
Iberis umbellata
John Thomas Howell
1957-8-6
32883
San Francisco
Golden Gate Park. Strybing Arboretum.
Comment
UC421621
Isocoma acradenia var. eremophila
John Thomas Howell
1927-11-25
3208
San Diego
Borrego Valley in w Colorado Desert Colorado Desert, Borrego Valley
Comment
CAS-BOT-BC57712
Isoetes bolanderi
John Thomas Howell
1944-8-16
20621
Tuolumne
Mono Pass
Comment
CAS-BOT-BC57738
Isoetes howellii
John Thomas Howell
1937-6-6
13015
Sonoma
Sebastopol
Comment
CAS-BOT-BC69854
Isoetes occidentalis
John Thomas Howell
1945-9-25
21502
Tuolumne
Outlet of Young Lake.
Comment
RSA224251
Isolepis cernua
J. T. Howell
1956-6-5
31486
San Francisco
San Francisco. North slope of Bayview Hills.
Comment
CAS-BOT-BC137456
Ivesia campestris
John Thomas Howell
1949-7-25
25735
Tulare
Siberian Pass Creek
3352
Comment
CAS-BOT-BC142803
Ivesia lycopodioides subsp. megalopetala
John Thomas Howell
1941-7-22
16399
Inyo
Mono Pass Trail
3352
Comment
CAS-BOT-BC139818
Ivesia lycopodioides var. scandularis
John Thomas Howell
1948-7-28
25117
Tulare
Center Basin
3657
Comment
RSA26092
Ivesia pygmaea
J. T. Howell
1942-8-3
17657
Tulare
Hamilton Lakes.
3049
Comment
CAS-BOT-BC142360
Ivesia sericoleuca
John Thomas Howell
1962-6-18
37826
Sierra
Sierra Valley, 2.5 mi. n. of Sattley - Sierra Nevada
1524
Comment
CAS-BOT-BC143368
Ivesia sericoleuca
John Thomas Howell
1963-7-11
39827
Nevada
3 miles northeast of Truckee
1767
Comment
CAS-BOT-BC48197
Jamesia americana var. rosea
John Thomas Howell
1949-7-31
25959
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC340277
Jensia rammii
John Thomas Howell
1954-5-17
29675
El Dorado
3 miles south of Garden Valley
Comment
CAS-BOT-BC101885
Juglans californica
John Thomas Howell
1963-8-6
40052
Monterey
Arroyo Seco at bridge below U.S. Forest Service Campground, Santa Lucia Mountains
Comment
CAS-BOT-BC109982
Juncus
John Thomas Howell; Gordon H. True
1969-9-30
46403
Tulare
Sierra Nevada. Kern Plateau. Pipe Sping on Cherry Hill Road, west side of Big Meadow.
2407
Comment
UC750728
Juncus bryoides
John Thomas Howell
1946-7-23
22682
Fresno
Fourth Recess
3048
Comment
UCD141411
Juncus bufonius var. bufonius
John Thomas Howell; Gordon H. True
1967-5-31
42528
Tulare
ca. 4.5 miles east-northeast of Pixley. Pools in NE corner of area.
83
Comment
RSA51480
Juncus hemiendytus var. abjectus
J. T. Howell
1949-7-23
s.n.
Tulare
Rock Creek
3201
Comment
CAS-BOT-BC110791
Juncus mertensianus
John Thomas Howell
1948-7-22
24897
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows.
3048
Comment
UC710572
Juncus parryi
John Thomas Howell
1943-7-16
18419
Nevada
near Norden (Boreal Ridge, w side of Donner Pass); Boreal Ridge, Donner Pass
2133
Comment
RSA102
Juncus xiphioides
J. T. Howell
1927-7-9
309
San Bernardino
Box S Spring, Mojave Desert.
1082
Comment
CAS-BOT-BC81197
Juniperus occidentalis
John Thomas Howell
1934-6-16
12208 A
Modoc
Parker Creek, Warner Mts.
1584
Comment
CAS-BOT-BC81210
Juniperus occidentalis
John Thomas Howell
1934-6-16
12208 B
Modoc
Parker Creek, Warner Mts.
1584
Comment
CAS-BOT-BC234568
Justicia californica
John Thomas Howell
1928-1-30
3306
Riverside
2 miles e. of Shaver's Well, Colorado Desert
Comment
CAS-BOT-BC56337
Kalmia microphylla subsp. microphylla
John Thomas Howell
1943-7-24
18778
Nevada
Frog Lake
Comment
RSA1321
Keckiella cordifolia
J. T. Howell
1928-7-8
1055
Riverside
Santa Ana Mountains above Glen Ivy
1067
Comment
CAS-BOT-BC236877
Keckiella corymbosa
John Thomas Howell
1954-11-3
30139
Monterey
Arroyo Seco River Canyon, Santa Lucia Mountains
Comment
CAS-BOT-BC246164
Keckiella lemmonii
John Thomas Howell
1976-7-14
51821
Plumas
Feather River Canyon Highway at Injun Jim Campground, Sierra Nevada
609
Comment
NY790349
Keckiella lemmonii
J. T. Howell
1976-7-16
51915
Plumas
Just east of Bucks Summit on road to Meadow Valley
1645.9
Comment
CAS-BOT-BC238308
Keckiella ternata var. ternata
John Thomas Howell
1927-8-7
2983
San Diego
In canyon nw. of Pine Valley
1219
Comment
JEPS29545
Kelloggia galioides
John Thomas Howell
1960-7-17
35489
Plumas
Drakesbad; Lassen Volcanic National Park
1676
Comment
CAS-BOT-BC180808
Kochia scoparia
John Thomas Howell
1956-8-19
31774
San Francisco
Waterfront St. near Mission Rock Terminal, San Francisco
Comment
CAS-BOT-BC175931
Koeleria macrantha
John Thomas Howell
1941-5-25
16212
Marin
Rifle Camp, Mt. Tamalpais
Comment
POM203916
Koeleria macrantha
J. T. Howell
1933-5-23
11326
San Francisco
west of Sutro Forest
Comment
CAS-BOT-BC271275
Koeleria pyramidata
John Thomas Howell
1942-8-1
17515
Tulare
Sky Parlor Meadow, Chagoopa Plateau
Comment
CAS-BOT-BC340434
Lactuca saligna
John Thomas Howell
1957-6-17
32674
San Francisco
San Francisco. Lone Mt.
Comment
CAS-BOT-BC340451
Lactuca saligna
John Thomas Howell
1943-9-25
19324
Marin
In southern part of Mill Valley
7
Comment
CAS-BOT-BC340679
Lactuca serriola
John Thomas Howell; Gordon H. True
1967-7-6
43203
Tulare
On Road 160, about 4.5 miles east-northeast of Pixley. Near E boundary of area
83
Comment
CAS-BOT-BC340702
Lactuca virosa
John Thomas Howell
1954-9-8
30108
San Mateo
Skyline Blvd. at San Andreas Lake, 2 miles west of San Bruno
Comment
CAS-BOT-BC341377
Lagophylla glandulosa
John Thomas Howell
1934-6-17
12236
Tehama
Near Cottonwood
Comment
CAS-BOT-BC341707
Lagophylla ramosissima
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
53963
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on the west slope of Sonoma Mountain
457
Comment
UCR84530
Langloisia matthewsii
J. T. Howell
1958-5-25
33348
Inyo
Sierra Nevada Mtns., Carroll Creek.
1677
Comment
UC909142
Langloisia setosissima subsp. setosissima
John Thomas Howell
1928-3-24
3495
San Diego
near Palm Wash; w. Colorado Desert
Comment
CAS-BOT-BC337871
Lapsana communis
John Thomas Howell
1941-6-29
16325
Marin
Mill Valley
Comment
CAS-BOT-BC412754
Lastarriaea coriacea
John Thomas Howell
1954-3-18
29133
Monterey
Hastings Reservation, Santa Lucia Mts.
Comment
CAS-BOT-BC324450
Lasthenia californica subsp. macrantha
John Thomas Howell
1929-5-26
4238
Mendocino
Fort Bragg
15
Comment
CAS-BOT-BC352823
Lasthenia glabrata subsp. glabrata
John Thomas Howell
1931-3-29
6015
San Benito
1.5 miles SE of San Benito.
Comment
POM203204
Lasthenia glabrata subsp. glabrata
J. T. Howell
1931-3-29
6015
San Benito
Near San Benito
Comment
POM361578
Lasthenia microglossa
J. T. Howell
1931-3-22
5958
Monterey
Stone Canyon
Comment
CAS-BOT-BC213367
Lathyrus jepsonii subsp. californicus
John Thomas Howell; Alice Eastwood
1937-6-20
4574
Mendocino
Near Yorkville.
Comment
CAS-BOT-BC205034
Lathyrus jepsonii var. jepsonii
John Thomas Howell
1938-8-28
14592
Solano
Suisun Marshes
Comment
CAS-BOT-BC205080
Lathyrus sulphureus
John Thomas Howell
1981-10-14
54650
Sutter
Dean Ranch, Sutter Buttes
Comment
RSA1496
Lathyrus vestitus var. alefeldii
J. T. Howell
1929-2-14
1233
Riverside
Santiago Trail, above Glen Ivy
Comment
CDA4999
Lavatera cretica
J. T. Howell
1976-6-2
51805
Marin
Corte Madera.
0
Comment
RSA8533
Layia chrysanthemoides
J. T. Howell
1933-5-26
11343
San Mateo
Crystal Springs Lake.
Comment
CAS-BOT-BC321462
Layia glandulosa
John Thomas Howell
1962-5-21
37247
Kern
West of Walker Pass summit
1584
Comment
CAS-BOT-BC321594
Layia glandulosa
John Thomas Howell
1977-3-12
52359
San Bernardino
Mojave Desert. E of Lucerne Valley
914
Comment
CAS-BOT-BC327372
Layia heterotricha
John Thomas Howell
1931-3-22
5969
Monterey
Stone Canyon 13 miles E of Salinas Valley
Comment
CAS-BOT-BC328231
Layia heterotricha
John Thomas Howell
1931-3-18
5842
Fresno
Oil Canyon
Comment
CAS-BOT-BC381166
Layia platyglossa
John Thomas Howell
1963-5-6
39091
Monterey
4 miles south of King City on road to Jolon
121
Comment
CAS-BOT-BC379637
Layia platyglossa
John Thomas Howell
1925-4-18
976
San Francisco
Between Land's End and Cliff House, Pt. Lobos, San Francisco
Comment
SBBG115764
Leersia oryzoides
J. T. Howell
1973-11-1
50303
Kern
Kern River, Hart Memorial Park near Bakersfield
146
Comment
GH400230
Lepechinia calycina
J. T. Howell
1955-7-8
30640
Unknown
Arroyo Seco road near Escondido Camp, Santa Lucia Mts.
792
Comment
CAS-BOT-BC221604
Lepechinia cardiophylla
John Thomas Howell
1927-6-26
2606
Orange
Claymine Canyon, n. Santa Ana Mts.
609
Comment
CAS-BOT-BC88938
Lepidium dictyotum
John Thomas Howell
1931-3-17
5786
Kings
14 miles north of Stratford on road to Fresno.
Comment
POM225543
Lepidium dictyotum
J. T. Howell
1931-3-23
5979
Monterey
Poncho Rico Canyon
Comment
CAS-BOT-BC89180
Lepidium draba
John Thomas Howell
1956-4-29
31303
San Francisco
San Francisco. Front and Vallejo streets.
Comment
CAS-BOT-BC89379
Lepidium fremontii
John Thomas Howell
1958-5-28
33565
Inyo
Sierra Nevada. Bishop Creek.
1828
Comment
JEPS53618
Lepidium fremontii
John Thomas Howell
1928-1-30
3305
Riverside
2 mi e Shaver's Well; Colorado Desert
Comment
CAS-BOT-BC12568
Lepidium nitidum
John Thomas Howell
1963-5-5
38981
Monterey
Mustang Grade, west of Priest Valley.
670
Comment
CAS-BOT-BC12760
Lepidium oxycarpum
John Thomas Howell
1933-4-1
10924
Sonoma
Petaluma.
Comment
CAS-BOT-BC12796
Lepidium perfoliatum
John Thomas Howell
1958-5-29
33623
Inyo
Sierra Nevada. Bishop.
1264
Comment
CAS-BOT-BC329361
Lepidospartum squamatum
John Thomas Howell
1971-6-25
48111
San Joaquin
Flood plain of Hospital Creek at Interstate Hwy 580, 4 miles SW of Vernalis
Comment
SEINET10960781
Leptochloa fusca subsp. fascicularis
John Thomas Howell
1962-9-21
Howell 38682
Kern
Kern River Canyon, el. ca.
427
Comment
UC702953
Leptodactylon pungens
John Thomas Howell
1941-7-31
16626
Madera
San Joaquin Mt.
Comment
CAS-BOT-BC226546
Leptosiphon acicularis
John Thomas Howell
1933-4-2
10932
Sonoma
Sonoma Creek Canyon
Comment
UCSB5175
Leptosiphon ciliatus
Howell, John
1945-6-21
Lake
Bartlett Mountain; Sawmill Flat to Ruppert Ridge
Comment
RSA43311
Leptosiphon liniflorus
J. T. Howell
1948-6-15
24373
San Luis Obispo
San Juan River Valley.
366
Comment
CAS-BOT-BC225634
Leptosiphon oblanceolatus
John Thomas Howell
1949-7-18
25466
Inyo
Cottonwood Lakes
3383
Comment
CAS-BOT-BC324080
Lessingia germanorum
John Thomas Howell
1931-9-29
8126
San Francisco
Presidio, San Francisco
Comment
GH414054
Lessingia germanorum
J. T. Howell
1926-11-7
2233
Unknown
San Francisco, near Lake Merced
Comment
RSA0010326
Lessingia germanorum var. tenuipes
John T. Howell
1927-8-17
3005
San Luis Obispo
4 miles south of Templeton.
Comment
CAS-BOT-BC339246
Lessingia glandulifera var. glandulifera
John Thomas Howell
1960-3-25
s.n.
Kern
North side above summit, Walker Pass
1676
Comment
CAS-BOT-BC339311
Lessingia glandulifera var. glandulifera
John Thomas Howell
1927-8-17
3011
Monterey
13 miles sw. of Jolon on the Nacimiento River, Santa Lucia Mts.
Comment
CAS-BOT-BC324162
Lessingia hololeuca
John Thomas Howell
1946-9-8
22992
Marin
Near Ignacio
Comment
POM197811
Lessingia hololeuca
John T. Howell
1926-10-20
2222
Marin
Ridge between Alto and Chapman
Comment
SBBG28037
Lessingia hololeuca
J. T. Howell
1945-9-2
Marin
San Rafael Hills
Comment
CAS-BOT-BC324145
Lessingia hololeuca
John Thomas Howell
1927-5-10
2383
Marin
Baltimore Park
213
Comment
RSA91164
Lessingia hololeuca
John T. Howell
1945-9-2
s.n.
Marin
San Rafael Hills
Comment
UC473466
Lessingia lemmonii var. peirsonii
John Thomas Howell
1930-5-13
4984
Kern
5 mi n Ricardo
Comment
CAS-BOT-BC339645
Lessingia leptoclada
John Thomas Howell
1962-9-26
38933
Kern
5.5 miles west of Summit on road to Glennville, Greenhorn Mountains
1463
Comment
CAS-BOT-BC339613
Lessingia leptoclada
John Thomas Howell
1930-10-12
5578
El Dorado
Hill directly north of Coloma on road to Georgetown
Comment
RSA201460
Lessingia nemaclada
John T. Howell
1960-7-24
35997
Tehama
8 miles west of Mineral.
1220
Comment
CAS-BOT-BC342012
Lessingia ramulosa
John Thomas Howell
1930-8-24
5450
Lake
4 miles from Middletown on Adams Springs Road
Comment
CAS-BOT-BC341998
Lessingia ramulosa
John Thomas Howell
No date on label
2250
Sonoma
SE. of Santa Rosa
Comment
OBI4876
Lessingia virgata
John Thomas Howell
1959-9-19
34612
Butte
5 mi W of Oroville
46
Comment
CAS-BOT-BC342064
Lessingia virgata
John Thomas Howell
1951-8-19
28151
Butte
Hills west of Oroville
Comment
CAS-BOT-BC342082
Leucanthemum vulgare
John Thomas Howell
1976-7-16
51885
Plumas
Spanish Creek near mouth of Slate Creek
1066
Comment
UC852030
Lewisia cotyledon var. cotyledon
John Thomas Howell
1939-8-3
14954
Siskiyou
Spirit Lake Marble Mts., Spirit Lake
Comment
CAS-BOT-BC444177
Lewisia nevadensis
John Thomas Howell
1960-7-22
35921
Plumas
Lassen Volcanic National Park. Devil's Kitchen to Drakesbad
1828
Comment
CAS-BOT-BC444231
Lewisia pygmaea
John Thomas Howell
1944-8-8
s.n.
Mariposa
Southeast of Elizabeth Lake in high gap
Comment
CAS-BOT-BC272259
Leymus X multiflorus
John Thomas Howell
1963-6-21
39477
Monterey
Between San Lucas and San Lorenzo Creek summit on road to Priest Valley
Comment
CAS-BOT-BC272260
Leymus X multiflorus
John Thomas Howell; Peter H. Raven
1962-10-27
18115
Monterey
12.3 mi. NW of Parkfield
Comment
CAS-BOT-BC283521
Leymus X vancouverensis
John Thomas Howell
1946-7-4
22177
Marin
Dillons Beach
Comment
CAS-BOT-BC273582
Leymus californicus
John Thomas Howell
1944-9-10
20736
Marin
Shell Beach north of Inverness
Comment
CAS-BOT-BC283771
Leymus cinereus
John Thomas Howell
1974-7-10
50554
Lassen
Elysian Valley
1325
Comment
UC1177105
Leymus pacificus
John Thomas Howell
1948-6-6
24335
Marin
Stinson Beach
Comment
CAS-BOT-BC272232
Leymus pacificus
John Thomas Howell
1950-7-4
s.n.
San Francisco
Above Marine Hospital, Presidio, San Francisco
Comment
CAS-BOT-BC272135
Leymus triticoides
John Thomas Howell; Gordon H. True
1967-7-3
42859
Tulare
Rockhouse Meadow, Kern Plateau, Sierra Nevada
1706
Comment
CAS-BOT-BC274485
Leymus triticoides
John Thomas Howell
1944-9-24
20741
Marin
Stinson Beach
Comment
CAS-BOT-BC274496
Leymus triticoides
John Thomas Howell
1973-7-25
50002
Merced
Just north of Ingomar on Cottonwood Road to Gustine
30
Comment
CAS-BOT-BC451570
Lilaea
John Thomas Howell
1954-5-17
29694
El Dorado
1.5 miles south of Garden Valley
Comment
CAS-BOT-BC451699
Lilaea scilloides
John Thomas Howell
1951-5-28
s.n.
Sonoma
Laguna east of Sebastopol
Comment
CAS-BOT-BC509389
Lilium kelleyanum
John Thomas Howell
1937-7-20
13148
Trinity
Van Ness Creek
Comment
CAS-BOT-BC130738
Lilium pardalinum
John Thomas Howell
1966-7-20
41994
Marin
Area adjacent to the John Thomas Howell Botanical Garden, Tiburon
Comment
UC1042321
Limnanthes bakeri
John Thomas Howell
1954-4-24
29148
Mendocino
1.5 mi n Willits (near type locality)
Comment
UC703024
Linanthus ciliatus
John Thomas Howell
1942-7-26
17217
Tulare
Mineral King
Comment
UC980837
Linanthus harknessii
John Thomas Howell
1944-7-17
19827
Glenn
Plaskett Meadows
Comment
UC421658
Linanthus parviflorus
John Thomas Howell
1928-6-10
3873
Los Angeles
Monrovia Canyon San Gabriel Mts.
Comment
CAS-BOT-BC435488
Lithophragma glabrum
John Thomas Howell
1941-7-30
16518
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC437156
Lithophragma heterophyllum
John Thomas Howell; Gordon H. True
1971-7-15
48562 A
Tulare
Northeast of Taylor Meadow between Church Dome and Black Mt.
2316
Comment
CAS-BOT-BC441129
Lithophragma parviflorum
John Thomas Howell
1944-7-13
19749
Glenn
Summit ridge north of Black Butte
Comment
CAS-BOT-BC342221
Logfia filaginoides
John Thomas Howell
1964-4-27
40505
Mariposa
El Portal
640
Comment
CAS-BOT-BC342194
Logfia filaginoides
John Thomas Howell
1928-5-4
3776
Los Angeles
Between dam and Deer Park in Monrovia Canon [Canyon], San Gabriel Mts.
Comment
CAS-BOT-BC342371
Logfia gallica
John Thomas Howell
1972-6-25
48886
Solano
Near intersection of Columbus Parkway and Benecia Road, about 2 miles west of Benecia
Comment
CAS-BOT-BC342403
Logfia gallica
John Thomas Howell
1929-6-2
4284
Marin
Hills at Fort Baker
Comment
CAS-BOT-BC283474
Lolium multiflorum
John Thomas Howell
1963-8-6
39984
Monterey
On the edge of cultivated fields along Central Ave between King City and Greenfield
Comment
CAS-BOT-BC271040
Lolium perenne
John Thomas Howell; Gordon H. True
1966-7-11
41692
Tulare
Poison Meadow, Kern Plateau, Sierra Nevada
2286
Comment
CAS-BOT-BC211167
Lomatium insulare
John Thomas Howell
1932-3-12
8207
Ventura
San Nicolas Island
Comment
UC703194
Lomatium nevadense var. parishii
John Thomas Howell
1941-7-30
16496
Madera
near Garnet lake
2956
Comment
CAS-BOT-BC241399
Lonicera
John Thomas Howell
1955-6-15
30484
Butte
6 miles from Paradise on road to Pentz
426
Comment
CAS-BOT-BC234833
Lonicera subspicata
John Thomas Howell
1931-4-12
6278
Santa Barbara
Cochie [Coche] Canyon, Santa Cruz I.
Comment
CAS-BOT-BC234834
Lonicera subspicata
John Thomas Howell
1931-4-12
6278
Santa Barbara
Cochie [Coche] Canyon, Santa Cruz Island
Comment
CAS-BOT-BC234880
Lonicera subspicata var. denudata
John Thomas Howell
1963-6-22
39542
Monterey
Between Mustang Summit and Priest Valley
670
Comment
CAS-BOT-BC201482
Lupinus albifrons var. albifrons
John Thomas Howell
1965-6-15
41334
Monterey
Near the Monterey Airport on Salinas road about 4 miles east of Monterey
Comment
CAS-BOT-BC196046
Lupinus albifrons var. collinus
John Thomas Howell
1940-5-26
15544
Marin
Little Carson
Comment
CAS-BOT-BC196272
Lupinus albifrons var. eminens
John Thomas Howell
1930-3-23
4570
Lake
Four miles from Middletown on road to Adams Springs
Comment
CAS-BOT-BC196285
Lupinus albifrons var. eminens
John Thomas Howell
1931-3-29
6008
San Benito
4 miles from San Benito on road to the Pinnacles
Comment
CAS-BOT-BC182187
Lupinus argenteus
John Thomas Howell
1934-7-2
12368
Modoc
W side of Clear Lake.
Comment
CAS-BOT-BC208747
Lupinus argenteus var. heteranthus
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49232
Lassen
On Hwy. 395 NW of Doyle on road to Milford - Sierra Nevada
1280
Comment
RSA407
Lupinus bicolor subsp. microphyllus
J. T. Howell
1925-2-25
852
Orange
Near Bee Canyon, Rancho Santa Ana.
152
Comment
JEPS33673
Lupinus breweri
John Thomas Howell
1925-5-29
1113
El Dorado
slope above Emerald Bay (Lake Tahoe); , slope above Emerald Bay
1981
Comment
CAS-BOT-BC196775
Lupinus breweri var. bryoides
John Thomas Howell
1949-7-26
25763
Tulare
Whitney Meadows
2987
Comment
CAS-BOT-BC215448
Lupinus cervinus
John Thomas Howell
1955-5-17
30164
Monterey
N slope of Junipero Serra Peak, Santa Lucia Mountains
1524
Comment
GH65490
Lupinus debilis
J. T. Howell
1945-6-21
21193
Unknown
Bartlett Mountain, Rupert Ridge to Bartlett Flat
Comment
CAS-BOT-BC205355
Lupinus elatus
John Thomas Howell
1927-7-10
2743
San Bernardino
North side of Big Bear Lake, San Bernardino Mts.
2042
Comment
UC1177214
Lupinus formosus
John Thomas Howell
1944-7-9
19688
Marin
Inverness Ridge
Comment
UCR88066
Lupinus formosus var. robustus
J. T. Howell
1954-5-10
29375
Madera
Sierra Nevada Mtns, Four mi. south of North Fork.
671
Comment
GH369078
Lupinus magnificus
J. T. Howell
1928-6-14
3893
Unknown
Surprise Canyon, Panamint Mts.
Comment
CAS-BOT-BC8367
Lupinus mariposanus
John Thomas Howell
1938-5-23
13880
Mariposa
4 miles from Nipinnawasee on raod to Mariposa
Comment
SEINET12894119
Lupinus polyphyllus
J. T. Howell
1938-1
14406
Unknown
Comment
CAS-BOT-BC436638
Luzula cascadensis
John Thomas Howell
1944-8-7
20076
Tuolumne
Tuolumne Meadows
Comment
CAS-BOT-BC436606
Luzula cascadensis
John Thomas Howell; Gordon H. True
1966-7-11
41753
Tulare
Sierra Nevada, Kern Plateau: Horse Meadow
2255
Comment
UC843146
Luzula parviflora
John Thomas Howell
1938-8-13
14574
Mariposa
Snow Flat
Comment
UC1177448
Lythrum hyssopifolia
John Thomas Howell
1945-7-29
21340
Marin
Bolinas
Comment
CAS-BOT-BC342794
Madia elegans
John Thomas Howell
1943-8-7
19163
Glenn
Plaskett Meadows
1828
Comment
POM304542
Madia elegans
J. T. Howell
1942-7-24
s.n.
Tulare
Mineral King
Comment
SEINET11601357
Madia exigua
J. T. Howell, T. C. Fuller, G. D. Barbe
1981-6-24
54193
Plumas
2.5 miles northeast of Quincy Junction on road to Mt. Hough
1280
Comment
CAS-BOT-BC334670
Madia glomerata
John Thomas Howell
1942-7-27
17279
Tulare
Between Mineral King and Timber Gap
Comment
CAS-BOT-BC343231
Madia gracilis
John Thomas Howell
1978-7-29
53345
Nevada
5 miles north of Truckee on road to Sierraville
1767
Comment
CAS-BOT-BC343287
Madia gracilis
John Thomas Howell; Gordon H. True
1967-7-11
43285
Plumas
2 miles from Quincy Junction on road to Mt. Hough
1219
Comment
CAS-BOT-BC343307
Madia gracilis
John Thomas Howell
1957-5-17
32241
San Francisco
San Francisco. Bayview Hills
Comment
CAS-BOT-BC510670
Maianthemum racemosum subsp. amplexicaule
John Thomas Howell
1948-7-29
25182
Fresno
Bubbs Creek Canyon
2834
Comment
CAS-BOT-BC514151
Maianthemum stellatum
John Thomas Howell; Gordon H. True
1971-6-16
47980
Kern
Claraville
1920
Comment
CAS-BOT-BC514180
Maianthemum stellatum
John Thomas Howell
1937-7-25
13463
Siskiyou
Caribou Basin, Salmon-Trinity Alps
Comment
CAS-BOT-BC204001
Malacothamnus fremontii
John Thomas Howell; T. H. Kearney
1950-8-29
27434 b
Inyo
Along road, from Independence to Onion Valley
2590
Comment
CAS-BOT-BC206334
Malacothamnus fremontii
John Thomas Howell; T. H. Kearney
1950-7-5
26635
Contra Costa
Nortonville.
Comment
CAS-BOT-BC204046
Malacothamnus fremontii
John Thomas Howell
1971-6-25
48114
Stanislaus
On Interstate Hwy. 5 at Black Gulch Creek, 2.5 miles west of Patterson
Comment
CAS-BOT-BC204107
Malacothamnus hallii
John Thomas Howell; Thos. H. Kearney
1950-8-27
27423
Santa Clara
Metcalf Road just east of Coyote
76
Comment
CAS-BOT-BC204190
Malacothamnus marrubioides
John Thomas Howell
1950-11-9
27485
Los Angeles
12 miles n. of Castac [Castaic]
609
Comment
RSA43315
Malacothamnus niveus
J. T. Howell
1948-6-15
s.n.
San Luis Obispo
Gillis Canyon, SE of Shandon
457
Comment
CAS-BOT-BC213632
Malacothamnus palmeri var. lucianus
John Thomas Howell
1955-7-8
30642
Monterey
Arroyo Seco road 3 miles from Escondido Camp, Santa Lucia Mts.
792
Comment
CAS-BOT-BC345414
Malacothrix clevelandii
John Thomas Howell
1928-5-6
3778
Los Angeles
East Fork of Santa Anita Canyon, on trail to Madrono Flat, San Gabriel Mts.
Comment
CAS-BOT-BC345462
Malacothrix coulteri
John Thomas Howell
1931-3-20
5884
Kings
5 miles n. of Devil's Den
Comment
CAS-BOT-BC347836
Malacothrix saxatilis var. commutata
John Thomas Howell
1933-8-18
11589
Monterey
6 miles west of Jamesburg, Santa Lucia Mts.
Comment
CAS-BOT-BC322582
Malacothrix saxatilis var. saxatilis
John Thomas Howell
1930-5-19
5181
Santa Barbara
1 mile se of Gaviota Pass
Comment
CAS-BOT-BC140196
Malus
John Thomas Howell
1959-9-21
34783
Plumas
N. Fk. Feather River near Belden
701
Comment
CAS-BOT-BC71151
Marsilea oligospora
John Thomas Howell
1969-9-13
46142
Nevada
3 miles from Boca on road to Hobart Mills
1828
Comment
RSA85836
Marsilea vestita
J. T. Howell
1926-7-30
2159
Plumas
Lake Almanor
Comment
CAS-BOT-BC497328
Marsilea vestita
John Thomas Howell
1934-6-15
12194
Modoc
Davis Reservoir, 2 mi E of Alturas
Comment
CAS-BOT-BC67776
Marsilea vestita
John Thomas Howell
1970-9-25
47460
Kern
Sierra Nevada - Lake Isabella (east side of north arm), about 5 miles south of Kernville.
792
Comment
CAS-BOT-BC348058
Matricaria discoidea
John Thomas Howell
1971-3-23
47578
Merced
About 3 miles easterly from Stevison
30
Comment
JEPS38181
Matricaria occidentalis
John Thomas Howell
1965-4-27
41241
Merced
5 mi e Los Banos
30
Comment
CAS-BOT-BC422654
Meconella californica
John Thomas Howell
1930-5-15
5137
Kern
Hills near Glenville [Glennville], Greenhorn Range
975
Comment
CAS-BOT-BC91584
Meconella oregana
John Thomas Howell
1930-4-6
4662
Santa Clara
8 miles from summit of Mount Hamilton on road to San Antonio Valley.
Comment
CAS-BOT-BC271196
Melica
John Thomas Howell
1964-6-30
40849
San Luis Obispo
Cambria
Comment
CAS-BOT-BC271144
Melica aristata
John Thomas Howell
1958-7-26
33959
Fresno
Blue Canyon Creek east of Tehipite Valley, Middle Fork of Kings River, Sierra Nevada
1417
Comment
CAS-BOT-BC269431
Melica californica
John Thomas Howell
1933-4-23
11102
San Benito
The Pinnacles
Comment
CAS-BOT-BC271727
Melica californica
John Thomas Howell; R. C. Barneby
1954-5-8
29207
Tulare
Tule River Canyon, 2.5 miles abvoe Springville, Sierra Nevada
411
Comment
CAS-BOT-BC282163
Melica geyeri
John Thomas Howell
1940-5-19
15448
Napa
Upper St Helena Creek
Comment
CAS-BOT-BC280943
Melica imperfecta
John Thomas Howell; Gordon H. True
1968-5-13
44313
Tulare
Cherry Hill Rd, Brush Creek Canyon, Kern Plateau
1584
Comment
CAS-BOT-BC281403
Melica imperfecta
John Thomas Howell; et al.
1978-4-5
52795
Calaveras
Near Stanislaus RIver bridge, Camp Nine Road NE of Vallecito
335
Comment
CAS-BOT-BC281063
Melica stricta
John Thomas Howell
1958-5-26
33413
Inyo
Onion Valley Rd
2133
Comment
CAS-BOT-BC281064
Melica stricta
John Thomas Howell
1958-5-26
33417
Inyo
Onion Valley Rd
2133
Comment
CAS-BOT-BC281146
Melica stricta
John Thomas Howell
1950-7-16
26976
Tulare
Gorge N of Bakeoven Meadows, S Fork of Kern River
2499
Comment
CAS-BOT-BC281194
Melica stricta
John Thomas Howell
1944-8-12
20399
Tuolumne
Gaylor Lakes
3291
Comment
CAS-BOT-BC281012
Melica stricta
John Thomas Howell
1943-8-8
19179
Unknown
Anthony Peak, Tehama - Mendocino County
Comment
CAS-BOT-BC262527
Melica torreyana
John Thomas Howell
1940-5-12
15430
Marin
Between Little Carson and Carson Ridge
Comment
RSA32512
Mentzelia dispersa
J. T. Howell
1945-6-19
21015
Lake
Sawmill Flat, Bartlett Mountain.
1220
Comment
RSA441
Mentzelia micrantha
J. T. Howell
1927-7-3
260
Orange
Claymine Canyon near Sierra Peak.
305
Comment
CAS-BOT-BC170876
Mentzelia veatchiana
John Thomas Howell
1962-5-20
37109
Kern
Kernville - Sierra Nevada
807
Comment
CAS-BOT-BC170880
Mentzelia veatchiana
John Thomas Howell
1930-5-13
5009
Kern
Summit of Walker Pass
1584
Comment
CAS-BOT-BC429164
Micranthes odontoloma
John Thomas Howell
1949-8-7
26128
Tulare
Rock Creek
3048
Comment
CAS-BOT-BC429182
Micranthes oregana
John Thomas Howell
1949-8-12
26249
Inyo
Cottonwood Creek
3108
Comment
CAS-BOT-BC322606
Micropus amphibolus
John Thomas Howell
1943-5-22
18148
Marin
Fairfax Hills
Comment
CAS-BOT-BC348845
Microseris douglasii subsp. douglasii
John Thomas Howell; Gordon H. True
1971-5-26
47634
Placer
Northern limits of Lincoln
48
Comment
CAS-BOT-BC348925
Microseris douglasii subsp. douglasii
John Thomas Howell
1946-5-12
21785
Marin
Carson Ridge
Comment
CAS-BOT-BC348931
Microseris douglasii subsp. douglasii
John Thomas Howell
1941-5-25
16221
Marin
Potrero Meadow, Mt. Tamalpais
Comment
CAS-BOT-BC322799
Microseris sylvatica
John Thomas Howell
1928-4-5
3715
Kern
8 miles below Keene, Tehachapi Pass Road
Comment
POM203997
Microsteris gracilis subsp. humilis
J. T. Howell
1933-4-23
11163
San Benito
Near Hernandez.
Comment
UC103632
Mimulus aurantiacus var. aurantiacus
Thos. Howell
1892-4-21
1454
Del Norte
Smith River
Comment
UC710533
Mimulus moniliformis
John Thomas Howell
1943-8-4
19008
Glenn
Plaskett Meadows
1828
Comment
JEPS58933
Mimulus rattanii
John Thomas Howell
1946-7-7
22196
Marin
s Barths Retreat; Mt. Tamalpais
Comment
CAS-BOT-BC388686
Minuartia douglasii
John Thomas Howell
1924-5-25
350
Mariposa
Near Fish Hatchery, Wawona
1219
Comment
CAS-BOT-BC181594
Minuartia nuttallii var. gracilis
John Thomas Howell
1942-7-29
17366
Tulare
Little Five Lakes Basin
Comment
CAS-BOT-BC181087
Minuartia nuttallii var. gregaria
John Thomas Howell
1937-7-29
13640
Trinity
Scott Mt. between Trinity and Siskiyou cos.
Comment
CAS-BOT-BC434663
Mirabilis laevis var. crassifolia
John Thomas Howell
1957-4-30
32119
Monterey
San Lorenzo Creek 5 miles from King City
Comment
CAS-BOT-BC434795
Mirabilis laevis var. retrorsa
John Thomas Howell
1962-7-7
38179
Kern
Wofford
792
Comment
RSA275
Mirabilis laevis var. villosa
J. T. Howell
1927-6-11
95
San Bernardino
Between Cajon Pass and Hesperia
1067
Comment
CAS-BOT-BC433001
Mitella breweri
John Thomas Howell
1940-7-30
15719
Tulare
East Lake
2926
Comment
CAS-BOT-BC221771
Monardella linoides subsp. sierrae
John Thomas Howell
1947-8-16
24150
Inyo
Big Pine Lakes Trail
2743
Comment
CAS-BOT-BC221982
Monardella odoratissima subsp. glauca
John Thomas Howell
1964-8-10
40948
Alpine
Just east of Monitor Pass
2468
Comment
CAS-BOT-BC222105
Monardella odoratissima subsp. pallida
John Thomas Howell
1960-7-20
35789
Plumas
Lassen Volcanic National Park. Between Boiling Springs Lake and Terminal Geyser
1859
Comment
CAS-BOT-BC222202
Monardella odoratissima subsp. pallida
John Thomas Howell; Gordon H. True
1970-7-29
47069
Tulare
1 mile from Long Meadow on road to Cannell Meadow. Kern Plateau
2346
Comment
CAS-BOT-BC220418
Monardella purpurea
John Thomas Howell
1939-5-21
14689
Marin
West side Tiburon Peninsula
Comment
CAS-BOT-BC220614
Monardella villosa
John Thomas Howell
1930-7-13
5349
Napa
Edge of the Crater Country
Comment
CAS-BOT-BC220549
Monardella villosa
John Thomas Howell
1931-6-15
6701
Mendocino
Near Talmadge [Talmage], Ukiah Valley
Comment
POM180780
Monardella villosa subsp. villosa
J. T. Howell
1930-7-13
5349
Napa
On the edge of the Crater Country
Comment
UC1995310
Monardella viridis
John Thomas Howell
1933-8-27
11639
Napa
Sage Canyon Napa Range
Comment
CAS-BOT-BC444626
Montia chamissoi
John Thomas Howell
1934-6-14
s.n.
Lassen
Near Lost Lake, Warner Mts.
2438
Comment
CAS-BOT-BC444777
Montia chamissoi
John Thomas Howell
1950-7-15
26911
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC445038
Montia linearis
John Thomas Howell
1933-5-14
11226
Contra Costa
St. Mary's College
Comment
CAS-BOT-BC260598
Muhlenbergia filiformis
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49495
Lassen
Elysian Valley, W of Janesville
1325
Comment
CAS-BOT-BC264547
Muhlenbergia filiformis
John Thomas Howell; Gordon H. True
1970-7-28
46974
Tulare
W side of Big Meadow just S of Pipe Spring, Kern Plateau
2377
Comment
CAS-BOT-BC264555
Muhlenbergia filiformis
John Thomas Howell
1949-7-23
25665
Tulare
Rock Creek
3200
Comment
RSA26259
Muhlenbergia filiformis
J. T. Howell
1940-8-5
16003
Tulare
Between East Lake and Reflection Lake
Comment
SBBG115776
Muhlenbergia filiformis
J. T. Howell
1958-8-13
34374
Madera
near Isberg Lake
2987
Comment
CAS-BOT-BC392249
Myosurus
John Thomas Howell
1976-7-20
52033
Lassen
About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek
1432
Comment
CAS-BOT-BC83233
Myosurus minimus
John Thomas Howell
1931-3-29
6014
San Benito
1.5 miles southeast of San Benito.
Comment
CAS-BOT-BC83318
Myosurus minimus
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49489
Lassen
Sierra Nevada. Elysian Valley west of Janesville.
1325
Comment
CAS-BOT-BC83327
Myosurus minimus
John Thomas Howell
1929-4-27
4209
Merced
3 miles northwest of Merced on Oakdale Road.
51
Comment
CAS-BOT-BC259941
Nassella lepida
John Thomas Howell
1941-4-17
s.n.
Marin
Tiburon
Comment
RSA127383
Nassella lepida
J. T. Howell
1946-5-16
21896
Marin
North side of Angel Island
Comment
CAS-BOT-BC260166
Nassella pulchra
John Thomas Howell
1938-5-22
13794
Marin
San Anselmo Canyon
Comment
CAS-BOT-BC260201
Nassella pulchra
John Thomas Howell
1956-5-6
31342
San Francisco
Sierra and 22nd Streets, San Francisco
Comment
UCD87547
Nassella pulchra
John Thomas Howell
1930-4-13
4697
Calaveras
3 miles west of San Andreas. On raod to Valley Springs.
Comment
RSA579
Navarretia hamata subsp. hamata
J. T. Howell
1927-6-11
85
San Bernardino
Highland Avenue, east of Upland.
305
Comment
UCD48713
Navarretia viscidula
John Thomas Howell
1945-7-15
21303
Marin
Near Meadow Club SW of Fairfax.
Comment
SEINET10460938
Nemacladus sigmoideus
Howell
1958-5-23
Howell 33213
Kern
Sandy flats 2 miles east of Walker Pass summit
1402
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
RSA98997
Nemophila pedunculata
J. T. Howell
1953-5-24
29014
Tuolumne
Between Long Barn and Pinecrest.
1707
Comment
JEPS12225
Nicotiana obtusifolia
John Thomas Howell
1927-11-26
3261
San Diego
San Felipe Wash
Comment
UCR139451
Oenothera xylocarpa
J. T. Howell
1948-8-1
25280
Mono
Owens Valley, 3 mi south of Crestview
2300
Comment
CAS-BOT-BC350001
Oreostemma alpigenum var. andersonii
John Thomas Howell
1925-6-27
1211
El Dorado
Rubicon Meadows, Lake Tahoe
2133
Comment
CAS-BOT-BC350032
Oreostemma alpigenum var. andersonii
John Thomas Howell
1946-7-14
22237
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC350046
Oreostemma alpigenum var. andersonii
John Thomas Howell
1934-7-9
12515
Lassen
Bridges Creek Spring
Comment
CAS-BOT-BC355636
Oreostemma alpigenum var. andersonii
John Thomas Howell
1951-7-21
28075
Tulare
Mineral King and Vicinity. White Chief region
3048
Comment
UCD134706
Oreostemma alpigenum var. andersonii
John Thomas Howell
1960-7-23
35964
Plumas
Drakesbad, Dream Lake. Lassen Volcanic National Park.
1676
Comment
CAS-BOT-BC499794
Orobanche corymbosa subsp. corymbosa
John Thomas Howell
1977-8-3
52519
Alpine
Sierra Nevada: Just N of Ebbetts Pass
2682
Comment
CAS-BOT-BC499808
Orobanche corymbosa subsp. corymbosa
John Thomas Howell
1938-8-7
14352
Mono
Near Little Round Valley
2133
Comment
CAS-BOT-BC500240
Orobanche robbinsii
John Thomas Howell
1930-9-7
5460
San Francisco
San Francisco: Land's End, the region of the type locality [of O. californica]
Comment
CAS-BOT-BC355665
Orochaenactis thysanocarpha
John Thomas Howell
1949-7-17
25433
Inyo
Little Cottonwood Creek
2987
Comment
CAS-BOT-BC355732
Orochaenactis thysanocarpha
John Thomas Howell; Gordon H. True
1970-7-29
47108
Tulare
Just east of Pine Flat on road to Cannell Meadow. Kern Plateau
2255
Comment
RSA118071
Orthocarpus purpurascens
J. T. Howell
1955-5-19
30204
Monterey
Avila Ranch, Santa Lucia Mountains, west of King City.
457
Comment
RSA70481
Oxalis laxa
J. T. Howell
1946-6-20
22099
Marin
Stinson Beach.
Comment
UC643406
Oxypolis occidentalis
John Thomas Howell
1940-7-28
15660
Fresno
near Charlotte Creek; Bubbs Creek
Comment
CAS-BOT-BC413232
Oxyria digyna
John Thomas Howell
1942-8-2
17581
Tulare
Little Five Lakes Basin
Comment
CAS-BOT-BC413201
Oxyria digyna
John Thomas Howell
1946-8-31
22939
El Dorado
Mt. Tallac
Comment
CAS-BOT-BC202191
Oxytropis parryi
John Thomas Howell
1947-8-14
24115
Inyo
Inconsolable Range, above Thunder & Lightning Lake
3657
Comment
CAS-BOT-BC318197
Packera breweri
John Thomas Howell
1930-5-15
5156
Kern
near Glenville, Greenhorn Range
Comment
CAS-BOT-BC316767
Packera cana
John Thomas Howell
1950-7-21
27157
Tulare
Monache Mt.
2590
Comment
CAS-BOT-BC121015
Paeonia brownii
J. T. Howell
1955-7-19
30751
Plumas
Beckwourth
1493
Comment
UCD89807
Panicum capillare subsp. hillmanii
John Thomas Howell
1973-7-10
49808
Lassen
Doyle.
Comment
CAS-BOT-BC253816
Panicum dichotomiflorum
John Thomas Howell
1976-10-29
52264
El Dorado
On Green Valley Road in Morman Island shopping center, about 4.5 miles NE of Folsom
137
Comment
SEINET195364
Papaver californicum
John Thomas Howell
1946-5-30
21962
Marin
Little Carson Canyon.
Comment
RSA32280
Papaver californicum
J. T. Howell
1946-5-30
21962
Marin
Little Carson Canyon.
Comment
CAS-BOT-BC422854
Papaver rhoeas
John Thomas Howell
1952-6-14
28357
Siskiyou
2 miles west of Gazelle
Comment
CAS-BOT-BC274088
Pappostipa speciosa
John Thomas Howell
1958-8-2
34224
Fresno
On zigzags of Copper Creek Canyon trail
1981
Comment
CAS-BOT-BC274120
Pappostipa speciosa
John Thomas Howell
1958-5-27
33511
Inyo
Bishop Creek
2133
Comment
GH360506
Parapholis incurva
J. T. Howell
1945-5-6
20816
Unknown
San Rafael
Comment
CAS-BOT-BC175628
Parnassia palustris
John Thomas Howell
1940-7-31
15778
Tulare
East Lake
2926
Comment
CAS-BOT-BC259621
Paspalum dilatatum
John Thomas Howell
1959-9-20
34668
Butte
Eastern outskirts of Oroville
60
Comment
CAS-BOT-BC258769
Paspalum urvillei
John Thomas Howell
1954-5-16
29656
El Dorado
Placerville
563
Comment
CAS-BOT-BC202849
Paxistima myrsinites
John Thomas Howell
1939-8-4
15056
Siskiyou
Near Spirit Lake, Marble Mts.
1828
Comment
CAS-BOT-BC169761
Pectocarya
John Thomas Howell
1976-5-19
51781
Kern
between Isabella Dam and Keysville. Greenhorn Mountains. Sierra Nevada
822
Comment
SBBG54517
Pellaea andromedifolia
J. T. Howell
1927-6-17
2551
Orange
Santa Ana Cyn
152
Comment
CAS-BOT-BC71508
Pellaea mucronata var. californica
John Thomas Howell
1964-10-23
40982
Inyo
Whitney Portal Road
2346
Comment
CAS-BOT-BC71545
Pellaea mucronata var. californica
John Thomas Howell; Gordon H. True
1968-5-12
44197
Tulare
Brush Creek Canyon
1432
Comment
CAS-BOT-BC67575
Pellaea mucronata var. californica
John Thomas Howell
1967-6-22
42660
Plumas
Sierra Nevada - Canyon of the Feather River North Fork, granite near mouth of Chambers Creek.
609
Comment
SEINET5326551
Penstemon caesius
J. T. Howell, Gordon H. True
1970-6-24
46716
Tulare
Kern Plateau, North Manter Creek, Big Meadow to Manter Meadow
Comment
CAS-BOT-BC265302
Penstemon davidsonii var. davidsonii
John Thomas Howell
1941-8-3
16712
Madera
Near Garnet Lake
2956
Comment
CAS-BOT-BC265331
Penstemon davidsonii var. davidsonii
Thomas Howell
1946-7-20
22589
Fresno
Ridge S of Mono Rock
3596
Comment
CAS-BOT-BC265387
Penstemon davidsonii var. davidsonii
John Thomas Howell
1942-7-31
17478
Tulare
Mount Kaweah
Comment
UCR89357
Penstemon grinnellii subsp. scrophularioides
J. T. Howell, T. C. Fuller, G. D. Barbe
1980-7-16
53806
Tulare
Sherman Pass Road, 4.5 mi east of jct with Cherry Hill Road
2256
Comment
CAS-BOT-BC265505
Penstemon heterodoxus
John Thomas Howell
1949-7-23
25651
Tulare
Soldier Lake
Comment
GH367526
Penstemon newberryi var. berryi
J. T. Howell
1939-8-2
14864
Unknown
Marble Mts.
Comment
CAS-BOT-BC245667
Penstemon newberryi var. newberryi
John Thomas Howell
1960-8-19
36194
Tehama
Summit of Brokeoff Mt., Lassen Volcanic National Park
2804
Comment
NY638942
Penstemon procerus var. brachyanthus
J. T. Howell
1937-7-24
13390
Siskiyou
Caribou Basin, Salmon-Trinity Alps
1981.2
Comment
CAS-BOT-BC239491
Penstemon rydbergii var. oreocharis
John Thomas Howell
1944-7-13
19743
Glenn
Summit ridge north of Black Butte
Comment
CAS-BOT-BC239537
Penstemon rydbergii var. oreocharis
John Thomas Howell
1944-8-10
20220
Mono
North slope of Mt. Dana
Comment
NY651258
Penstemon rydbergii var. oreocharis
J. T. Howell
1934-6-12
12022
Modoc
Plum Valley, Warner Mountains
Comment
NY651260
Penstemon rydbergii var. oreocharis
J. T. Howell
1981-6-23
54177
Plumas
Long Valley at road to Maxwell Mine
1633.7
Comment
CAS-BOT-BC239665
Penstemon sudans
John Thomas Howell; Gordon H. True
1973-8-1
50153
Lassen
Gold Run Creek road south of Susanville, Diamond Range
1584
Comment
CAS-BOT-BC222777
Perideridia parishii
John Thomas Howell; Gordon H. True
1970-7-30
47208
Tulare
Along Salmon Creek at north end of Big Meadow. Kern Plateau
2377
Comment
CAS-BOT-BC413549
Persicaria amphibia
John Thomas Howell
1963-8-5
39938
Monterey
Along Watsonville-San Juan Road, about 2 miles south of Aromas
Comment
CAS-BOT-BC413684
Persicaria capitata
John Thomas Howell
1972-8-17
s.n.
Monterey
On Lighthouse Ave. near Forest Ave., Pacific Grove
Comment
CAS-BOT-BC413740
Persicaria hydropiper
John Thomas Howell
1932-9-18
10779
Sonoma
Bank of slough draining Kenwood Marsh
Comment
CAS-BOT-BC418993
Persicaria lapathifolia
John Thomas Howell
1970-9-25
47413
Kern
Kernville
807
Comment
CAS-BOT-BC419008
Persicaria lapathifolia
John Thomas Howell
1927-10-29
3180
Los Angeles
Near Alamitos Bay
15
Comment
CAS-BOT-BC419210
Persicaria maculosa
John Thomas Howell
1959-11-4
35112
Marin
Stinson Beach
Comment
CAS-BOT-BC419300
Persicaria punctata
John Thomas Howell
1956-12-3
31969
Mariposa
7.5 miles from Cathay on road to Planada
Comment
UC702957
Phacelia calthifolia
John Thomas Howell
1928-4-1
3600
San Bernardino
37 mi n Baker
Comment
OBI13806
Phacelia distans
John Thomas Howell
1948-6-15
24370
San Luis Obispo
Hughes Cyn SE of Shandon
610
Comment
SBBG29812
Phacelia distans
J. T. Howell
1930-4-20
4741
Marin
Point Reyes
Comment
SD72104
Phacelia distans
John Thomas Howell
1928-1-15
3277
Orange
Gypsum Station on side of Santa Ana CaA'on.
152
Comment
UC702991
Phacelia distans
John Thomas Howell
1928-6-10
3882
Los Angeles
Deer Park San Gabriel Mts., Monrovia Canyon
Comment
SBBG41201
Phacelia egena
J. T. Howell
1943-8-8
Tehama
Anthony Pk
Comment
UCD120438
Phacelia egena
John Thomas Howell
1928-5-27
3865
Los Angeles
1 mile west of Chandler's on the Ridge Route.
Comment Read comments Apr 5 2016
RSA427956
Phacelia frigida subsp. dasyphylla
J. T. Howell
1948-7-31
25210
Fresno
West side of Kearsarge Pass.
3354
Comment
SD72087
Phacelia frigida subsp. dasyphylla
John Thomas Howell
1946-8-31
22945
El Dorado
Mt. Tallac
Comment
RSA1073
Phacelia grandiflora
J. T. Howell
1928-6-29
999
Los Angeles
Seminole Hot Springs Road, Santa Monica Mountains
457
Comment
SBBG41378
Phacelia hastata
J. T. Howell
1958-8-14
34440
Madera
NE of Sadler Lake, East Fk of Granite Crk
3048
Comment
UCD120478
Phacelia hastata
John Thomas Howell
1934-7-8
12480
Lassen
Champ's Flat.
Comment
UC941725
Phacelia imbricata
John Thomas Howell
1951-7-22
28145
Tulare
1.5 mi e Slapjack Creek (on road to Mineral King); Sequoia Park
1737
Comment
CAS-BOT-BC145043
Phacelia keckii
John Thomas Howell
1931-5-30
6611
Riverside
Santiago Peak, Santa Ana Mts.
1219
Comment
CAS-BOT-BC145044
Phacelia keckii
John Thomas Howell
1931-5-30
6611
Riverside
Santiago Peak, Santa Ana Mts.
1219
Comment
RSA602
Phacelia malvifolia
J. T. Howell
1927-8-19
s.n.
Monterey
Cypress Point, Monterey Peninsula.
12
Comment
UC702958
Phacelia malvifolia
John Thomas Howell
1929-6-16
4312
San Francisco
Point Lobos San Francisco (type locality)
Comment
JEPS55980
Phacelia mutabilis
John Thomas Howell
1958-7-31
34149 A
Fresno
Simpson Meadow Sierra Nevada, Middle Fork of the Kings River
1828
Comment
SBBG41209
Phacelia mutabilis
J. T. Howell
1939-8-2
Siskiyou
Spirit Lake, Marble Mtns
1828
Comment
GH93444
Phacelia peirsoniana
J. T. Howell
1938-8-7
14353
Unknown
Near Little Round Valley, in crevices of volcanic rocks under pinyons
Comment
CAS-BOT-BC154333
Phacelia phacelioides
John Thomas Howell
1978-5-4
52870
Contra Costa
Burned area in chaparral near summit, Mt. Diablo
1066
Comment
UC710566
Phacelia racemosa
John Thomas Howell
1944-8-15
20505
Tuolumne
between Young Lake and Tuolumne Meadows
2743
Comment
CAS-BOT-BC159019
Phacelia ramosissima var. latifolia
John Thomas Howell; Gordon H. True
1967-9-19
43907
Tulare
Granitic rocks 0.5 mile west of South Fork Kern River bridge, Kennedy Meadows
1859
Comment
CAS-BOT-BC159139
Phacelia ramosissima var. ramosissima
John Thomas Howell
1963-6-22
39562
Monterey
Priest Valley
685
Comment
UC702960
Phacelia tanacetifolia
John Thomas Howell
1929-3-27
4104
San Joaquin
6 1/2 mi w Tracy (road to Altamont)
Comment
CAS-BOT-BC265772
Phalaris aquatica
John Thomas Howell
1945-8-12
21381
Marin
Above salt marsh, Tiburon
Comment
CAS-BOT-BC265785
Phalaris aquatica
John Thomas Howell
1963-6-21
39474
Monterey
Between San Lucas and San Lorenzo Creek summit on road to Priest Valley
Comment
UC1177484
Phalaris aquatica
John Thomas Howell
1941-6-10
16295
Marin
Novato
Comment
GH360510
Phalaris canariensis
J. T. Howell
1902-5-3
5446
Unknown
Near Nelson
Comment
CAS-BOT-BC250609
Phalaris minor
John Thomas Howell
1963-6-21
39452
Monterey
King City
100
Comment
CAS-BOT-BC250633
Phalaris minor
John Thomas Howell
1933-5-7
11212
San Francisco
Lone Mountain, San Francisco
Comment
CAS-BOT-BC250676
Phalaris minor
John Thomas Howell; Gordon H. True
1967-6-11
42554
Yolo
North of Woodland near Cache Creek
Comment
CAS-BOT-BC250809
Phleum alpinum
John Thomas Howell; Gordon H. True
1967-7-4
43032
Tulare
Fish Creek about 3.5 miles south of Troy Meadow, Kern Plateau
2255
Comment
CAS-BOT-BC260845
Phleum pratense
John Thomas Howell
1955-7-20
30861
Plumas
Mohawk, Sierra Nevada
1371
Comment
UC703071
Phlox diffusa
John Thomas Howell
1942-7-29
17389
Tulare
Little Five Lakes Basin
Comment
CAS-BOT-BC232837
Phlox pulvinata
John Thomas Howell
1946-7-20
22579
Fresno
S of Mono Rock
3596
Comment
CAS-BOT-BC222619
Pholistoma auritum var. auritum
John Thomas Howell
1931-4-14
6384
Santa Barbara
China Harbor, Santa Cruz Island
Comment
CAS-BOT-BC134932
Phoradendron bolleanum
John Thomas Howell
1962-7-11
38553
Kern
NW slope of Black Mt. Greenhorn Mountains. Sierra Nevada
2133
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-BC452038
Phyllospadix torreyi
John Thomas Howell
1943-10-3
19331
Marin
On Muir Beach
Comment
CAS-BOT-BC140522
Physocarpus
John Thomas Howell
1959-9-24
34938
Plumas
Butterfly Creek near mouth
Comment
CAS-BOT-BC142250
Physocarpus capitatus
John Thomas Howell
1958-6-28
33638
Marin
Stream bank, Willow Meadow, Mt. Tamalpais
Comment
CDA3324
Phytolacca heterotepala
J. T. Howell
1960-1-23
35131
San Francisco
Golden Gate Park, San Francisco.
0
Comment
CAS-BOT-BC73474
Picea breweriana
John Thomas Howell
1939-8-2
14900
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
A246947
Pinus albicaulis
J. T. Howell
1937-7-24
Unknown
Caribou Basin, Salmon-Trinity Alps
1981
Comment
CAS-BOT-BC73313
Pinus balfouriana
John Thomas Howell; Gordon H. True
1970-6-25
46799
Tulare
Sierra Nevada, Kern Plateau - on trail from Big Meadow to East Sirretta Pass.
2743
Comment
CAS-BOT-BC78422
Pinus balfouriana
John Thomas Howell
1942-7-31
17437
Tulare
Between Big Arroyo and Chagoopa Plateau
Comment
CAS-BOT-BC73212
Pinus flexilis
John Thomas Howell
1949-8-13
26284
Inyo
Little Cottonwood Creek
2895
Comment
CAS-BOT-BC73102
Pinus lambertiana
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-26
53012
Calaveras
Sierra Nevada, ridgetop on volcanic agglomerate near Dorrington.
1524
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-BC78985
Pinus muricata
John Thomas Howell
1944-3-26
19358
Marin
Inverness Ridge west of Inverness
Comment
CAS-BOT-BC72875
Pinus ponderosa
John Thomas Howell
1960-8-18
36014
Tehama
Near Lassen Volcanic National Park, Morgan Summit
1752
Comment
CAS-BOT-BC80050
Pinus washoensis
John Thomas Howell; Gordon H. True
1970-7-14
5498
Sierra
Crystal Peak [loop road] Loop Road ca. 0.5 miles west of Dog Valley Road near Dog Valley Campground
1950
Comment
UCD94968
Piptatherum miliaceum
John Thomas Howell
1954-8-4
30023
Santa Clara
Palo Alto. Comper Street between University Avenue and Lytton Street.
Comment
UC517459
Plagiobothrys bracteatus
John Thomas Howell
1933-5-14
11232
Contra Costa
St. Mary's College
Comment
UCD120774
Plagiobothrys bracteatus
John Thomas Howell
1941-6-10
16274
Marin
Near Black Point.
Comment
UC526161
Plagiobothrys greenei
John Thomas Howell
1934-3-27
11803
Sonoma
summit of Bennett Valley Road from Glen Ellen to Santa Rosa
Comment
CAS-BOT-BC230967
Plagiobothrys hispidulus
John Thomas Howell; H. Keith Wagnon
1980-5-27
53618
Plumas
1 mile W of Almanor
1386
Comment
UC421643
Plagiobothrys mollis
John Thomas Howell
1926-7-30
2156
Plumas
Prattville
1371
Comment
CAS-BOT-BC228476
Plagiobothrys myosotoides
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-15
53792
Tulare
Along road, Cannell Meadow, Kern Plateau
2331
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
GH403977
Plagiobothrys reticulatus var. rossianorum
J. T. Howell
1930-6-8
5225
Unknown
Bodega Road, 4 miles east of Valley Ford
Comment
CAS-BOT-BC230612
Plagiobothrys torreyi
John Thomas Howell; Gordon H. True
1966-7-11
41709
Tulare
Horse Meadow, Kern Plateau
2255
Comment
CAS-BOT-BC245394
Plectritis macrocera
John Thomas Howell
1934-6-11
11973
Modoc
Parker Creek.
1584
Comment
CAS-BOT-BC260954
Pleuropogon californicus var. californicus
John Thomas Howell
1945-5-9
20828
Marin
Between Hamilton Field and Ignacio
Comment
CAS-BOT-BC260987
Pleuropogon californicus var. californicus
John Thomas Howell
1931-4-1
6037
Sonoma
9 miles sw. of Sonoma on road to San Rafael
Comment
UC421657
Pluchea odorata var. odorata
John Thomas Howell
1927-9-24
3117
Orange
Santa Ana Canyon
152
Comment
POM203048
Poa
J. T. Howell
1934-6-14
12171
Modoc
Near Lost Lake, Warner Mts.
2439
Comment
RSA22160
Poa
J. T. Howell
1937-7-24
13403
Siskiyou
Caribou Basin, Salmon-Trinity Alps.
1982
Comment
CAS-BOT-BC254607
Poa X limosa
John Thomas Howell
1963-7-10
39696
Alpine
At Grover Hot Springs
1798
Comment
CAS-BOT-BC244443
Poa annua
John Thomas Howell
1946-4-21
21696
Marin
Near Point Reyes Lighthouse
Comment
CAS-BOT-BC255549
Poa annua
John Thomas Howell
1956-7-1
31648
San Francisco
Embarcadero and Vallejo Street, San Francisco
Comment
CAS-BOT-BC254882
Poa bolanderi
John Thomas Howell
1944-8-6
20002
Tuolumne
Between Dog Lake and Tuolumne Meadows
Comment
CAS-BOT-BC254952
Poa bulbosa
John Thomas Howell
1972-4-25
48702
Mariposa
Near Camp Curry, Yosemite Valley
1219
Comment
SEINET7293871
Poa bulbosa subsp. bulbosa
John Thomas Howell, Gordon H. True
1969-1
45723
Tulare
Roadside flat, mouth of Brush Creek, Kern River Canyon
1189
Comment
CAS-BOT-BC254690
Poa cusickii subsp. epilis
John Thomas Howell; Gordon H. True
1968-7-16
4411
Mono
Virginia Lakes basin, ca. 3.25 miles SW of Conway Summit
2956
Comment
SEINET10921572
Poa epilis
John Thomas Howell
1944-8-12
Howell 20379
Tuolumne
Gaylor Lakes.
3292
Comment
CAS-BOT-BC246670
Poa howellii
John Thomas Howell
1944-5-21
19487
Marin
Canyon below Phoenix Lake, Mt. Tamalpais
Comment
CAS-BOT-BC255857
Poa kelloggii
John Thomas Howell; Alice Eastwood
1936-5-23
2730
Mendocino
6.5 miles W of Orr's Hot Springs
Comment
RSA51441
Poa kelloggii
J. T. Howell
1950-5-18
26311
Marin
Lagunitas Creek near Camp Taylor.
Comment
CAS-BOT-BC246816
Poa leibergii
John Thomas Howell
1942-8-7
17813
Tulare
Columbine Lake
Comment
CAS-BOT-BC255902
Poa nervosa
John Thomas Howell; Gordon H. True
1970-8-11
6201 A
Nevada
Carpenter Ridge, Independence Lake drainage, ca. 7.5 mi. west of Truckee-Sierraville Highway
2621
Comment
CAS-BOT-BC247259
Poa palustris
John Thomas Howell
1947-7-24
23581
San Bernardino
Santa Ana River, San Bernardino Mts.
1920
Comment
CAS-BOT-BC255201
Poa pratensis
John Thomas Howell
1949-7-26
25781
Tulare
Whitney Meadows
2956
Comment
CAS-BOT-BC256050
Poa pratensis
John Thomas Howell; Gordon H. True
1968-5-12
44208
Tulare
Brush Creek Canyon, Kern Plateau, Sierra Nevada
1402
Comment
POM303608
Poa pratensis
J. T. Howell
1943-8-3
18937
Glenn
Plaskett Meadows.
1829
Comment
UCD90416
Poa secunda
John Thomas Howell
1943-7-16
18397
Nevada
Boreal Ridge. West side of Donner Pass near Norden.
2133
Comment
RSA43356
Poa secunda
J. T. Howell
1948-4-24
24217
San Luis Obispo
east of Cholame
Comment
CAS-BOT-BC236316
Poa secunda subsp. juncifolia
John Thomas Howell
1950-7-21
27160
Tulare
Monache Mountain, Sierra Nevada
2590
Comment
CAS-BOT-BC247072
Poa secunda subsp. juncifolia
John Thomas Howell
1962-9-25
38903
Kern
Kernville
807
Comment
CAS-BOT-BC235997
Poa secunda subsp. secunda
John Thomas Howell
1946-7-14
22357
Inyo
Rock Creek Lake Basin, Mosquito Flat
3139
Comment
CAS-BOT-BC242987
Poa secunda subsp. secunda
John Thomas Howell; et al.
1967-6-12
2085
Plumas
Butterfly Botanical Area and Vicinity. Area near spring
1127
Comment
CAS-BOT-BC243011
Poa secunda subsp. secunda
John Thomas Howell
1930-3-29
4601 A
San Benito
The Pinnacles
Comment
CAS-BOT-BC243372
Poa secunda subsp. secunda
John Thomas Howell
1944-8-5
19964
Tuolumne
Near Parsons Lodge, Tuolumne Meadows
Comment
CAS-BOT-BC244516
Poa secunda subsp. secunda
John Thomas Howell
1943-8-8
19182
Mendocino
Anthony Peak, Tehoma-Mendocino County
Comment
CAS-BOT-BC244529
Poa secunda subsp. secunda
John Thomas Howell
1941-4-17
s.n.
Marin
Tiburon Peninsula
Comment
UC710538
Poa secunda subsp. secunda
John Thomas Howell
1943-8-8
19182
Mendocino
Anthony Peak; Tehama-Mendocino Co.
Comment
CAS-BOT-BC243069
Poa secunda subsp. secunda
John Thomas Howell
1957-5-6
32198
San Diego
San Francisco. Hunters Point
Comment
UCD91646
Poa secunda subsp. secunda
John Thomas Howell
1958-4-28
33019
San Luis Obispo
San Luis Obispo County: Carrisa Plains, just S of Soda Lake.
Comment
CAS-BOT-BC244141
Poa sierrae
John Thomas Howell
1967-6-23
42740
Plumas
Lewisia Rock, 3.5 miles SW of Belden, Feather River Canyon
609
Comment
UC710589
Poa stebbinsii
John Thomas Howell
1944-8-12
20379
Tuolumne
Gaylor Lakes
3291
Comment
RSA54047
Poa trivialis
J. T. Howell
1948-5-7
24296
San Francisco
Jackson St.
Comment
CAS-BOT-BC244333
Podagrostis humilis
John Thomas Howell; Gordon H. True
1966-7-11
41649
Tulare
Poison Meadow, Kern Plateau
2286
Comment
UC1988933
Pogogyne serpylloides
John Thomas Howell
1930-4-22
4747
Contra Costa
Bald Peak
Comment
CAS-BOT-BC110513
Polygonum
John Thomas Howell
1962-9-26
38957
Kern
Sierra Nevada. Greenhorn Mountains. Glennville.
960
Comment
CAS-BOT-BC110514
Polygonum
John Thomas Howell
1962-9-21
38680
Kern
Sierra Nevada. Kern River Canyon.
426
Comment
CAS-BOT-BC414145
Polygonum aviculare subsp. aviculare
John Thomas Howell
1969-8-26
45951
Tulare
Mineral King
2377
Comment
RSA88466
Polygonum davisiae
J. T. Howell
1951-6-28
27692
Plumas
Eureka Peak
1982
Comment
CAS-BOT-BC218138
Polygonum douglasii
John Thomas Howell
1934-6-11
11975
Modoc
Parker Creek.
1584
Comment
CAS-BOT-BC414469
Polygonum douglasii
John Thomas Howell
1949-7-18
25457
Inyo
Cottonwood Creek
3108
Comment
CAS-BOT-BC414591
Polygonum douglasii
John Thomas Howell
1937-7-21
13165
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
CAS-BOT-BC414552
Polygonum douglasii
John Thomas Howell
1974-9-20
50889
Plumas
7 miles from Quincy on road to Blairsden
1097
Comment
RSA127093
Polygonum fowleri
J. T. Howell
1949-5-22
25326
Marin
Salt marsh at head of Drakes Esters.
Comment
CAS-BOT-BC418619
Polygonum majus
John Thomas Howell
1939-8-4
15035
Siskiyou
Between Elk Mt. and Marble River, Marble Mts.
Comment
CAS-BOT-BC419978
Polygonum polygaloides subsp. kelloggii
John Thomas Howell
1944-8-5
19983
Tuolumne
Near Parsons Lodge, Tuolumne Meadows
Comment
CAS-BOT-BC420095
Polygonum polygaloides subsp. kelloggii
John Thomas Howell
1940-8-2
15903
Tulare
Slope north of Reflection Lake
3352
Comment
CAS-BOT-BC419904
Polygonum polygaloides subsp. kelloggii
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50649
Lassen
Slope south and southeast of Diamond Mt.
2286
Comment
CAS-BOT-BC420142
Polygonum ramosissimum subsp. prolificum
John Thomas Howell
1963-8-20
40129
Kern
South Fork Valley about 2 miles northeast of Weldon
807
Comment
SEINET12884257
Polygonum sawatchense
J. T. Howell
1925-1
1200
Unknown
Comment
CAS-BOT-BC420165
Polygonum sawatchense subsp. sawatchense
John Thomas Howell
1925-6-27
1200
Placer
Tahoe Tavern, Lake Tahoe
1889
Comment
CAS-BOT-BC420173
Polygonum sawatchense subsp. sawatchense
John Thomas Howell; Gordon H. True
1970-7-14
5550
Sierra
Verdi Peak Road ca. 1 mile below Lookout.
2499
Comment
CAS-BOT-BC420961
Polygonum sawatchense subsp. sawatchense
John Thomas Howell
1950-7-13
26789
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
RSA18970
Polygonum spergulariiforme
J. T. Howell
1937-7-21
13159
Siskiyou
S Fork of Salmon river near Big Flat.
1524
Comment
CAS-BOT-BC71983
Polypodium californicum
John Thomas Howell
1957-5-6
32206
San Francisco
Hunters Point
Comment
CAS-BOT-BC72095
Polypodium scouleri
John Thomas Howell
1957-5-17
32314
San Francisco
Bayview Hills
Comment
CAS-BOT-BC232951
Polypogon australis
John Thomas Howell; Gordon H. True
1971-6-15
47826
Kern
Flying Dutchman Creek canyon on Havilah-Mount Breckenridge road
1341
Comment
UCD91200
Polypogon maritimus
John Thomas Howell
1958-6-28
33633
Marin
South side of Alpine Lake near Bon Tempe Dam, Mt. Tamalpais.
Comment
CAS-BOT-BC232466
Polypogon monspeliensis
John Thomas Howell
1963-5-18
39326
Monterey
2.5 miles S of Aromas
60
Comment
CAS-BOT-BC76694
Polystichum munitum
John Thomas Howell; Gordon H. True
1970-5-27
46559
El Dorado
Sierra Nevada - Rubicon River Canyon, near waterfall, N-NE of Leonardi Spring.
1127
Comment
CAS-BOT-BC102504
Populus fremontii
John Thomas Howell
1928-6-16
3980
Inyo
Surprise [Canon] Canyon, Panamint Mts.
1432
Comment
CAS-BOT-BC102713
Populus tremuloides
John Thomas Howell
1944-8-14
s.n.
Tuolumne
Glen Aulin
Comment
CAS-BOT-BC102941
Populus trichocarpa
John Thomas Howell
1960-3-21
35126
Monterey
3 miles se. of Carmel Valley
Comment
CAS-BOT-BC105584
Populus trichocarpa
John Thomas Howell; Gordon H. True
1969-6-23
45816
Plumas
Middle Fork of Feather River at Nelson Point - Sierra Nevada
1249
Comment
POM180684
Porophyllum gracile
J. T. Howell
1929-3-2
4097
Orange
Rocky hills on N side of Santa Ana Canyon.
152
Comment
RSA1556
Porophyllum gracile
J. T. Howell
1928-7-10
1047
Riverside
Hidden Canyon, Santa Ana Mts.
396
Comment Read comments Apr 24 2013
CAS-BOT-BC453792
Potamogeton natans
John Thomas Howell
1961-9-23
36860
Plumas
Indian Valley
1082
Comment
CAS-BOT-BC453858
Potamogeton nodosus
John Thomas Howell
1946-7-4
22185
Marin
East of Aurora School at Sonoma Co. line
Comment
CAS-BOT-BC453924
Potamogeton pectinatus
John Thomas Howell
1957-8-21
32917
San Francisco
San Francisco. Quarry Lake, Golden Gate Park
Comment
RSA44400
Potamogeton robbinsii
J. T. Howell
1947-8-15
24127
Inyo
Fourth Lake, 10,800 ft., Big Pines Lakes.
3293
Comment
CAS-BOT-BC143426
Potentilla
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-28
53161
Alpine
West base of Ebbetts Peak
Comment
CAS-BOT-BC141897
Potentilla anserina subsp. pacifica
John Thomas Howell
1956-8-12
31761
San Francisco
Alemany Blvd. near Bayshore Freeway - San Francisco
Comment
CAS-BOT-BC143093
Potentilla anserina subsp. pacifica
John Thomas Howell
1966-4-18
41508
Marin
Gully just north of John Thomas Howell Botanical Garden, Tiburon
Comment
CAS-BOT-BC539499
Potentilla biennis
John Thomas Howell; Gordon H. True
1966-7-11
41635
Tulare
Poison Meadow, Kern Plateau
2286
Comment
CAS-BOT-BC539500
Potentilla biennis
John Thomas Howell; Gordon H. True
1970-7-30
47221
Tulare
Along Salmon Creek at north end of Big Meadow, Kern Plateau
2377
Comment
CAS-BOT-BC539526
Potentilla biennis
John Thomas Howell; Gordon H. True
1971-7-14
48440
Tulare
Manter Meadow, Kern Plateau
2164
Comment
CAS-BOT-BC143243
Potentilla flabellifolia
John Thomas Howell
1946-7-15
22404
Inyo
Ruby Lake, Rock Creek Lake Basin
3383
Comment
CAS-BOT-BC158439
Potentilla glaucophylla var. glaucophylla
John Thomas Howell
1949-7-19
25516
Tulare
Rock Creek
3200
Comment
CAS-BOT-BC540006
Potentilla gracilis
John Thomas Howell
1958-7-22
33768
Fresno
Sierra Nevada, Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC540357
Potentilla gracilis var. fastigiata
John Thomas Howell
1941-7-31
16579
Madera
Agnew Pass
Comment
CAS-BOT-BC540362
Potentilla gracilis var. fastigiata
John Thomas Howell
1934-7-6
12440
Lassen
Harvey Valley
Comment
RSA85735
Potentilla newberryi
J. T. Howell
1934-7-2
12359
Modoc
East side of Clear Lake
Comment
CAS-BOT-BC158193
Prunus emarginata
John Thomas Howell
1961-6-20
36537
Shasta
On Chaos Crags Trail near Manzanita Lake
1889
Comment
CAS-BOT-BC158266
Prunus fasciculata var. fasciculata
John Thomas Howell; Gordon H. True
1969-5-13
45637
Kern
Spanish Needle Creek road to Lamont Meadow
1280
Comment
CAS-BOT-BC151172
Prunus subcordata
John Thomas Howell
1964-4-28
40636
Mariposa
Bootjack - Sierra Nevada
685
Comment
CAS-BOT-BC356515
Pseudognaphalium beneolens
John Thomas Howell
1959-9-21
34737
Plumas
Belden
701
Comment
CAS-BOT-BC356946
Pseudognaphalium californicum
John Thomas Howell
1928-4-21
3743
Ventura
At Pt. Mugu
45
Comment
CAS-BOT-BC356960
Pseudognaphalium canescens
John Thomas Howell
1976-8-12
52226
Mariposa
Glacier Point
2194
Comment
CAS-BOT-BC357031
Pseudognaphalium luteoalbum
John Thomas Howell
1962-9-22
38725
Kern
2 miles east of Kern Co. Park, Greenhorn Mountains
1432
Comment
CAS-BOT-BC357048
Pseudognaphalium luteoalbum
John Thomas Howell
1964-4-28
40595
Mariposa
2 miles east of Morman Bar
670
Comment
CAS-BOT-BC357087
Pseudognaphalium luteoalbum
John Thomas Howell
1943-6-29
18243
San Francisco
Concert Valley, Golden Gate Park, San Francisco
Comment
CAS-BOT-BC357249
Pseudognaphalium microcephalum
John Thomas Howell
1958-7-25
33910
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC361532
Pseudognaphalium stramineum
John Thomas Howell
1926-4-24
1938
San Francisco
Near Lake Merced, San Francisco
Comment
CAS-BOT-BC361559
Pseudognaphalium stramineum
J. T. Howell
1961-4-14
36498
San Luis Obispo
Santa Lucia Mountains. Cambria
Comment
CAS-BOT-BC361484
Pseudognaphalium stramineum
John Thomas Howell
1951-6-29
27764
Plumas
Feather River Canyon
548
Comment
UC120047
Pseudostellaria jamesiana
Thos. Howell
1889-4-16
1337
Siskiyou
Hornbrook
Comment
CAS-BOT-BC361688
Psilocarphus
John Thomas Howell
1954-6-5
29930
Tuolumne
Near Long Barn
Comment
CAS-BOT-BC361823
Psilocarphus brevissimus var. brevissimus
John Thomas Howell
1965-5-9
41308
Tulare
About 4 1/2 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC361737
Psilocarphus brevissimus var. brevissimus
John Thomas Howell; Gordon H. True
1971-5-26
47608
Yuba
About 8 miles east of Marysville
30
Comment
CAS-BOT-BC453500
Pterospora andromedea
John Thomas Howell; Gordon H. True
1973-7-31
50024
Lassen
Sierra Nevada, on road from Janesville to Thompso Peak, Diamond Range
1737
Comment
CAS-BOT-BC466288
Pterospora andromedea
John Thomas Howell; Gordon H. True
1966-7-12
41849
Kern
Sierra Nevada. Kern Plateau. At spring in Bartolas Country, easterly from Cane Meadow
2194
Comment
CAS-BOT-BC421239
Pterostegia drymarioides
John Thomas Howell
1963-5-5
39008
Monterey
Mustang Grade, west of Priest Valley
670
Comment
CAS-BOT-BC143782
Purshia stansburyana
John Thomas Howell
1928-6-14
3907
Inyo
Surprise Canyon, Panamint Mts.
Comment
CAS-BOT-BC147878
Purshia tridentata var. tridentata
John Thomas Howell; Gordon True; Walter Knight; Irja Knight
1967-7-10
2207
Plumas
Mouth of Butterfly Creek
883
Comment
RSA216195
Pyracantha fortuneana
J. T. Howell
1959-11-4
35111
Marin
At Stinson Beach
Comment
CAS-BOT-BC462854
Pyrola asarifolia
John Thomas Howell
1925-7-5
1379
El Dorado
Armstrong's, Emerald Bay, Lake Tahoe
1889
Comment
CAS-BOT-BC462899
Pyrola asarifolia
John Thomas Howell
1963-6-3
39398
Plumas
Sierra Nevada, Butterfly Valley
Comment
CAS-BOT-BC465520
Pyrola asarifolia
John Thomas Howell; Gordon H. True
1970-6-25
46777
Tulare
Sierra Nevada, Kern Plateau: East branch of Salmon Creek, Big Meadow to Sirretta Meadows
2590
Comment
CAS-BOT-BC462625
Pyrola dentata
John Thomas Howell
1958-8-2
34193
Fresno
Sierra Nevada: Copper Creek Canyo Trail
2286
Comment
CAS-BOT-BC465991
Pyrola minor
John Thomas Howell
1947-7-25
23635
San Bernardino
San Bernardino Mts., East of Dry Lake
2804
Comment
CAS-BOT-BC362187
Pyrrocoma apargioides
John Thomas Howell
1949-8-12
26250
Inyo
Cottonwood Creek
3108
Comment
CAS-BOT-BC50354
Pyrrocoma lanceolata var. lanceolata
John Thomas Howell
1934-6-15
12185
Modoc
Alturas.
Comment
CAS-BOT-BC94704
Quercus X howellii
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary Wells
1981-5-14
53936
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles NE of Penngrove on the W slope of Sonoma Mountain
457
Comment
CAS-BOT-BC62484
Quercus chrysolepis
John Thomas Howell
1930-10-25
5681
Monterey
Santa Lucia Mountains. Canyon of the Arroyo Seco River
Comment
CAS-BOT-BC62540
Quercus chrysolepis
John Thomas Howell
1956-9-23
31878
Marin
Near Laurel Dell, Mt. Tamalpais
Comment
CAS-BOT-BC86561
Quercus chrysolepis
John Thomas Howell
1962-5-22
37256
Tulare
Kern River Canyon above Roads End
1097
Comment
UCD45578
Quercus chrysolepis var. nana
John Thomas Howell
1962-7-11
38583
Kern
Summit ridge, Black Mt., el. 7400 ft. Greenhorn Mountain, Kern County.
2255
Comment
CAS-BOT-BC86862
Quercus douglasii
John Thomas Howell
1970-9-24
47355
Kern
S of Bodfish
853
Comment
CAS-BOT-BC86894
Quercus douglasii
John Thomas Howell
1940-6-29
15587 A
Lake
Cobb Mt. on road from Adams Springs to Middletown
Comment
A344917
Quercus garryana
J. T. Howell
1943-8-6
19139
Unknown
Meadows se. of Black Butte
Comment
CAS-BOT-BC94356
Quercus garryana
John Thomas Howell
1945-7-15
21301
Marin
Fairfax Hills near Camp Lilienthal
Comment
CAS-BOT-BC62759
Quercus garryana var. breweri
John Thomas Howell
1934-7-4
12383
Siskiyou
Lava beds between Timbered Crater and Little Hot Springs Valley
Comment
UCD46131
Quercus garryana var. semota
John Thomas Howell
1962-7-8
38255
Kern
Sierra Nevada. Greenhorn Mountains. South side of Black Mt.
1432
Comment
CAS-BOT-BC94761
Quercus john-tuckeri
John Thomas Howell
1931-9-7
8065
San Benito
San Benito Canyon, 10 miles NW of Hernandez
Comment
CAS-BOT-BC105247
Quercus kelloggii
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49159
Lassen
Elysian Valley NW of Janesville
1325
Comment
CAS-BOT-BC105494
Quercus kelloggii
John Thomas Howell
1936-8-28
12869
Trinity
12 miles from Douglas City on road to Peanut
Comment
UCD46632
Quercus kelloggii
John Thomas Howell; Gordon H. True
1967-9-18
43812
Tulare
At spring ca. 3 miles from Chimney Meadow on road to Long Valley, Kern Plateau, Tulare County.
2194
Comment
UCD46654
Quercus kelloggii
John Thomas Howell
1958-5-26
33410
Inyo
Onion Valley road, Inyo County;
2438
Comment
CAS-BOT-BC62880
Quercus lobata
John Thomas Howell
1930-10-19
5608
Napa
Pope Valley School, Pope valley
Comment
A343462
Quercus tomentella
J. T. Howell
1931-4-13
6326
Unknown
Santa Cruz Island near the west end
Comment
CAS-BOT-BC104748
Quercus wislizeni
John Thomas Howell; Gordon H. True
1971-6-15
47751
Kern
Sierra Nevada. Flying Dutchman Creek canyon on Havilah Mt., Breckenridge road
1188
Comment
CAS-BOT-BC362409
Rafinesquia
John Thomas Howell
1925-3-22
805
Alameda
Arroyo Mocho
Comment
CAS-BOT-BC362434
Rafinesquia californica
John Thomas Howell
1933-7-9
11428
San Francisco
Lake Merced, San Francisco
Comment
CAS-BOT-BC362679
Raillardella argentea
John Thomas Howell
1943-7-20
18628
Nevada
Castle Peak
Comment
CAS-BOT-BC362806
Raillardella scaposa
John Thomas Howell
1946-7-15
22397
Inyo
Ruby Lake, Rock Creek Lake Basin
3383
Comment
CAS-BOT-BC186667
Ranunculus
John Thomas Howell
1963-8-22
40280
Alpine
0.5 mile w. of Monitor Pass
2529
Comment
RSA215992
Ranunculus californicus
J. T. Howell
1957-5-17
32263
San Francisco
Bayview Hills
Comment
UC1176751
Ranunculus californicus
John Thomas Howell
1946-4-14
21631
Marin
near 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-BC378740
Ranunculus californicus var. cuneatus
John Thomas Howell
1940-5-20
15501
Marin
Pt. Reyes
Comment
CAS-BOT-BC83442
Ranunculus lobbii
John Thomas Howell
1947-6-4
s.n.
Marin
Radio Station, Point Reyes Peninsula.
Comment
UC169535
Ranunculus occidentalis
Thos. Howell
1892-4-18
1401
Del Norte
Crescent City; near the sea
Comment
CAS-BOT-BC74334
Raphanus sativus
John Thomas Howell
1964-6-29
40764
San Luis Obispo
Cambria.
Comment
CAS-BOT-BC427529
Reseda alba
John Thomas Howell
1934-10-25
12577
San Francisco
San Francisco
Comment
SD149111
Rhamnus
John Thomas Howell, T. C. Fuller, G. D. Barbe
1981-6-25
54298
Plumas
East side of Indian Valley just north of Taylorsville
1111
Comment
CAS-BOT-BC59572
Rhamnus alnifolia
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-26
54408
Plumas
Sierra Nevada - Walker Plain, about 8 miles southwest of Bucks Lake on road to Oroville
1524
Comment
CAS-BOT-BC56012
Rhamnus ilicifolia
John Thomas Howell
1928-3-2
3362
Los Angeles
Vermont Canyon, Griffith Park
Comment
CAS-BOT-BC59512
Rhamnus ilicifolia
John Thomas Howell; Alice Eastwood
1938-5-4
5432
Madera
Near North Fork
Comment
CAS-BOT-BC59878
Rhamnus ilicifolia
John Thomas Howell; Gordon H. True
1968-5-13
44334
Butte
Cherry Hill Road at Rincon Trail, Brush Creek Canyon. Kern Plateau.
1463
Comment
RSA459
Rhamnus tomentella subsp. tomentella
J. T. Howell
1927-8-7
615
San Diego
Between Campo and Buckman Springs.
915
Comment
RSA445
Rhus trilobata var. quinata
J. T. Howell
1927-6-11
83
San Bernardino
Highland Avenue, east of Upland.
305
Comment
CAS-BOT-BC6187
Rhynchospora californica
John Thomas Howell
1936-7-26
12679
Sonoma
Pitkin Marsh, 5 miles N of Sebastopol
Comment
UCD141231
Rhynchospora californica
John Thomas Howell
1945-7-18
21321
Sonoma
Pitkin Marsh.
Comment
RSA94069
Rhynchospora californica
J. T. Howell
1945-7-18
s.n.
Sonoma
Pitkin Marsh
Comment
POM303623
Rhynchospora capitellata
J. T. Howell
1936-7-26
12677
Sonoma
Pitkin Marsh, 5 miles north of Sebastopol.
Comment
RSA74059
Rhynchospora capitellata
J. T. Howell
1936-7-26
12677
Sonoma
Pitkin Marsh, 5 miles north of Sebastopol.
Comment
UCR89360
Ribes amarum
J. T. Howell
1960-5-2
35244
Mariposa
Sierra Nevada Mtns, Serpentine area NW of Coulterville
Comment
CAS-BOT-BC92535
Ribes binominatum
John Thomas Howell
1937-7-25
13458
Siskiyou
Caribou Basin, Salmon-Trinity Alps.
2286
Comment
RSA127373
Ribes californicum
J. T. Howell
1943-5-16
18114
Alameda
Lower part of Arroyo del Valle.
Comment
CAS-BOT-BC93007
Ribes californicum var. californicum
John Thomas Howell
1930-3-30
4641
Santa Clara
West side of Pacheco Pass.
304
Comment
CAS-BOT-BC93301
Ribes cereum
John Thomas Howell
1925-7-6
1418
El Dorado
Summit of Mount Tallac, Lake Tahoe region.
Comment
CAS-BOT-BC93313
Ribes cereum
John Thomas Howell
1948-7-22
24839
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows.
3048
Comment
CAS-BOT-BC169078
Ribes inerme var. inerme
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-6-28
53130
Alpine
Subalpine slope west of Ebbetts Peak - Sierra Nevada
2712
Comment
CAS-BOT-BC169100
Ribes inerme var. inerme
John Thomas Howell
1948-7-21
24807
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC173285
Ribes lacustre
John Thomas Howell
1937-7-22
13305
Siskiyou
South Fork of Salmon River near Big Flat
1524
Comment
UC421660
Ribes malvaceum
John Thomas Howell
1930-3-29
4605
San Benito
The Pinnacles
Comment
CAS-BOT-BC206018
Ribes menziesii
John Thomas Howell
1942-4-26
16951
Contra Costa
Oakland Hills near Redwood Peak
Comment
CAS-BOT-BC212936
Ribes montigenum
John Thomas Howell
1948-7-21
24818
Fresno
Bubbs Creek Canyon, in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC219196
Ribes nevadense
John Thomas Howell
1923-6-10
45
Mariposa
Merced River at the Indian Bridge, Wawona
1219
Comment
A381035
Ribes viscosissimum var. hallii
J. T. Howell
1944-7-16
19823
Unknown
Snow Basin north of Black Butte
1676
Comment
POM203710
Romanzoffia californica
J. T. Howell
1931-4-18
6411
Sonoma
Larkspur Rock near Bodega Bay.
Comment
CAS-BOT-BC74539
Rorippa curvisiliqua
John Thomas Howell
1941-8-9
16893
Madera
Near Garnet Lake.
2956
Comment
CAS-BOT-BC74729
Rorippa curvisiliqua
John Thomas Howell
1955-6-13
30384
Trinity
Hayfork.
716
Comment
SEINET5763345
Rorippa sinuata
John Thomas Howell
1934-1
12019
Modoc
Plum Valley; Warner Mountains
Comment
CAS-BOT-BC146344
Rosa
John Thomas Howell
1964-10-24
41031
Alpine
Canyon of East Fork of Carson River 2 miles se. of Markleeville
Comment
CAS-BOT-BC147535
Rosa californica
J. T. Howell
1933-8-27
11629
Napa
Sage Canyon, Napa Range
Comment
CAS-BOT-BC147652
Rosa californica
John Thomas Howell
1931-4-12
6279
Santa Barbara
Cochie Canyon, Santa Cruz Island
Comment
UC1177434
Rosa eglanteria
John Thomas Howell
1946-6-13
22057
Marin
n Dillons Beach; Estero School
Comment
CAS-BOT-BC274226
Rostraria cristata
John Thomas Howell
1956-4-16
31248
Alameda
Paru & Dayton streets, Alameda
Comment
CAS-BOT-BC147250
Rubus parviflorus
John Thomas Howell
1962-7-10
38457
Kern
Near Shirley Meadows. Greenhorn Mountains
1981
Comment
CAS-BOT-BC147332
Rubus parviflorus
John Thomas Howell
1942-7-24
17124
Tulare
Mineral King
Comment
CAS-BOT-BC158836
Rubus ursinus
John Thomas Howell
1938-5-22
13799
Marin
San Anselmo Canyon
Comment
CAS-BOT-BC158842
Rubus ursinus
John Thomas Howell
1938-6-19
13921
Marin
Bootjack, Mt. Tamalpais
Comment
POM261521
Rubus ursinus var. sirbenus
J. T. Howell
1938-5-22
13788
Marin
San Anselmo Canyon.
Comment
CAS-BOT-BC421910
Rumex acetosella
John Thomas Howell
1962-6-15
37477
Butte
Magalia
731
Comment
JEPS58028
Rumex acetosella
John T. Howell
1923-6-5
28
Mariposa
near Hotel Wawona; Wawona Valley
Comment
UCD101033
Rumex acetosella
John Thomas Howell
1946-8-31
22942
El Dorado
Mt. Tallac.
2895
Comment
CAS-BOT-BC422179
Rumex californicus
John Thomas Howell
1949-7-26
25797
Tulare
Golden Trout Creek
2941
Comment
CAS-BOT-BC422200
Rumex californicus
John Thomas Howell; Gordon H. True
1968-5-14
44423
Tulare
Cherry Hill Road, Brush Creek Canyon, Kern Plateau
1219
Comment
CAS-BOT-BC421723
Rumex conglomeratus
John Thomas Howell
1930-9-28
5521
San Joaquin
Holt
Comment
CAS-BOT-BC433517
Rumex fueginus
John Thomas Howell
1963-11-19
40410
Monterey
Robert's Lake, Seaside
Comment
CAS-BOT-BC433531
Rumex fueginus
John Thomas Howell
1956-8-26
31797
San Francisco
San Francisco. Strand of Pine Lake
Comment
CAS-BOT-BC109394
Rumex paucifolius
John Thomas Howell
1942-7-29
17359
Tulare
Little Five Lakes Basin.
Comment
SEINET12899116
Rumex salicifolius
J. T. Howell
1947-1
23340
Unknown
Comment
CAS-BOT-BC434116
Rumex transitorius
John Thomas Howell
1946-6-13
22021
Marin
Chileno Valley
Comment
CAS-BOT-BC434300
Rumex triangulivalvis
John Thomas Howell
1943-7-19
18589
Placer
Summit Valley
Comment
RSA128314
Sagina decumbens subsp. occidentalis
J. T. Howell
1946-4-21
21689
Marin
Dunes near radio station, Pt. Reyes Peninsula
Comment
A382361
Salix arctica
J. T. Howell
1940-8-2
15918
Unknown
West of Reflection Lake
3352
Comment
CAS-BOT-BC132801
Salix arctica
John Thomas Howell
1946-7-26
22784
Fresno
Fourth Recess
Comment
CAS-BOT-BC132832
Salix arctica
John Thomas Howell
1944-8-10
20214
Mono
North slope of Mt. Dana
Comment
CAS-BOT-BC103055
Salix bonplandiana
John Thomas Howell; Catherine Best
1983-4-19
54720
Kern
Kern River Preserve of The Nature Conservancy, South Fork Valley near Weldon
Comment
CAS-BOT-BC108659
Salix bonplandiana
John Thomas Howell
1964-4-29
40680
Tuolumne
In belt of metamorphic rocks at Tuolumne River bridge, 2.5 miles east of Jacksonville
198
Comment
CAS-BOT-BC129868
Salix bonplandiana
John Thomas Howell; Alice Eastwood
1940-3-29
7818
Inyo
Grapevine Canyon, Death Valley
Comment
CAS-BOT-BC103226
Salix bonplandiana
John Thomas Howell
1925-4-11
954
Napa
Soscol
Comment
NY177721
Salix drummondiana
J. T. Howell
1958-5-24
33260
Inyo
Whitney portal
2529.8
Comment
CAS-BOT-BC103458
Salix eastwoodiae
John Thomas Howell
1951-8-21
28276
Sierra
Yuba Pass
2042
Comment
RSA201399
Salix eastwoodiae
J. T. Howell
1940-8-4
15961
Tulare
East Lake.
2927
Comment
NY188441
Salix eriocephala subsp. mackenzieana
J. T. Howell
1981-8-11
54451
Mono
East end of Convict Lake
2316.5
Comment
CAS-BOT-BC103738
Salix exigua
John Thomas Howell
1954-5-17
29770
El Dorado
Spanish Ravine, Placerville
609
Comment
CAS-BOT-BC108391
Salix exigua
John Thomas Howell
1970-11-9
47549
Kern
Sourth Fork Valley near Onyx on road to Weldon - Sierra Nevada
822
Comment
CAS-BOT-BC107941
Salix geyeriana
John Thomas Howell
1943-7-23
18724
Nevada
Between Donner Pass and West Lake
Comment
CAS-BOT-BC107835
Salix gooddingii
J. T. Howell
1959-9-20
34657
Butte
Lower foothills, eastern outskirts of Oroville - Sierra Nevada
60
Comment
CAS-BOT-BC104148
Salix hindsiana
John Thomas Howell
1939-9-3
15347
Marin
San Antonio Creek
Comment
UCD111095
Salix jepsonii
John Thomas Howell
1961-6-20
36564
Shasta
Lassen Highway east of Diamond Peak.
Comment
CAS-BOT-BC106939
Salix laevigata
John Thomas Howell
1960-6-6
35326
Fresno
Kings Canyon road 8 miles west of Horseshoe Bend
1463
Comment
RSA503343
Salix laevigata
J. T. Howell
1960-3-25
35167
Kern
10 miles east of Onyx.
Comment
GH384173
Salix lasiandra
J. T. Howell
1963-7-10
39689
Unknown
Meadow at Grover Hot Springs
1798
Comment
CAS-BOT-BC128093
Salix lasiandra var. lasiandra
John Thomas Howell
1964-4-18
40436
Monterey
Robinson Canyon - Santa Lucia Mountains
Comment
CAS-BOT-BC128163
Salix lasiandra var. lasiandra
John Thomas Howell
1963-8-20
40192
Inyo
Whitney Portal - Sierra Nevada
2438
Comment
CAS-BOT-BC129463
Salix lasiandra var. lasiandra
John Thomas Howell
1970-9-22
47308
Tulare
Fairview - Sierra Nevada
1066
Comment
CAS-BOT-BC125307
Salix lasiandra var. lasiandra
John Thomas Howell
1960-7-21
35839
Plumas
Flats nw. of Willow Lake
1676
Comment
CAS-BOT-BC107162
Salix lasiolepis var. bigelovii
John Thomas Howell
1957-5-26
32420
San Francisco
North base of Lone Mt. - San Francisco
Comment
CAS-BOT-BC124384
Salix lasiolepis var. lasiolepis
John Thomas Howell
1964-4-18
40435
Monterey
Robinson Canyon, Santa Lucia Mts.
Comment
CAS-BOT-BC128258
Salix lasiolepis var. lasiolepis
John Thomas Howell; Gordon H. True
1970-6-24
46729
Tulare
North Manter Creek, Big Meadow to Manter Medow - Kern Plateau, Sierra Nevada
2438
Comment
CAS-BOT-BC128285
Salix lasiolepis var. lasiolepis
John Thomas Howell; Gordon H. True
1971-7-16
48639
Tulare
Yellow Pine Forest near Last Chance Creek, about 2 miles northwest of Johnsondale
2042
Comment
CAS-BOT-BC129576
Salix lasiolepis var. lasiolepis
John Thomas Howell; Gordon H. True
1969-4-8
45487
Butte
Near Pulga Bridge west of Pulga - Sierra Nevada
411
Comment
CAS-BOT-BC124788
Salix lemmonii
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-22
54095
Plumas
10.6 miles northeast of La Porte on road to Quincy
1889
Comment
CAS-BOT-BC125600
Salix lutea
John Thomas Howell; Gordon H. True
1969-10-1
46453
Tulare
Taylor Meadow. Kern Plateau
2286
Comment
CAS-BOT-BC129386
Salix melanopsis
John Thomas Howell
1976-7-16
51897
Plumas
Hydraulic mining gravels on flood plain of Spanish Cr. at mouth of Wapaunsie Creek - Sierra Nevada
1097
Comment
CAS-BOT-BC129482
Salix melanopsis
John Thomas Howell
1954-6-4
29914
Stanislaus
Knights Ferry
Comment
CAS-BOT-BC125861
Salix orestera
John Thomas Howell
1940-8-1
15844
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC129370
Salix orestera
John Thomas Howell
1946-7-22
22637
Fresno
Mt. Hopkins
Comment
A384424
Salix planifolia var. monica
J. T. Howell
1946-7-28
22813
Unknown
Long Lake, Rock Creek Lake Basin
3230
Comment
CAS-BOT-BC128971
Salix sitchensis
John Thomas Howell
1937-7-25
13465
Siskiyou
Caribout Basin, Salmon-Trinity Alps
2286
Comment
SEINET8140216
Salix sitchensis
J. T. Howell
1947-1
23345
Unknown
Comment
CAS-BOT-BC180701
Salsola tragus
John Thomas Howell
1950-11-9
27486
Los Angeles
Along Ridge Route, 12 miles north of Castaic
609
Comment
CAS-BOT-BC180759
Salsola tragus
John Thomas Howell
1965-5-9
41297
Tulare
Vernal pool natural area in Valley Grassland, about 4 1/2 miles east-northeast of Pixley
83
Comment
RSA270
Salsola tragus
J. T. Howell
1927-7-27
499
Orange
Near ranch houses, Rancho Santa Ana
152
Comment
CAS-BOT-BC175657
Salsola tragus
John Thomas Howell
1930-10-5
5540
Solano
Near Sacramento River bridge, Rio Vista
Comment
RSA662
Salvia columbariae
J. T. Howell
1928-3-18
891
Orange
Rancho Santa Ana, Botanic Garden.
152
Comment
CAS-BOT-BC220813
Salvia dorrii var. pilosa
John Thomas Howell; Gordon H. True
1967-5-30
42477
Tulare
About midway between Lamont Meadow and Long Valley, Kern Plateau
1554
Comment
JEPS33664
Salvia leucophylla
John Thomas Howell
1928-4-21
3734
Ventura
Pt. Mugu
60
Comment
CAS-BOT-BC238671
Sambucus nigra subsp. caerulea
John Thomas Howell
1947-8-13
24046
Inyo
Big Pine Creek Trail
3048
Comment
POM304564
Saxifraga aprica
John T. Howell
1942-7-29
17365
Tulare
Little Five Lakes Basin.
Comment
RSA22019
Saxifragopsis fragarioides
John T. Howell
1939-8-3
14990
Siskiyou
Spirit Lake, Marble Mountains.
1829
Comment
CAS-BOT-BC283652
Schedonorus pratensis
John Thomas Howell
1939-8-9
15200
Siskiyou
Sky High Valley, Marble Mountains
1828
Comment
CAS-BOT-BC283639
Schedonorus pratensis
John Thomas Howell
1956-5-11
31365
San Francisco
Vacant lot, Fell St near Baker St, San Francisco
Comment
CAS-BOT-BC239865
Schismus arabicus
John Thomas Howell
1957-4-30
32117
Monterey
San Lorenzo Creek 4.5 miles from King City
121
Comment
CAS-BOT-BC111318
Schoenoplectus acutus var. occidentalis
John Thomas Howell
1947-6-18
23260
Marin
Laguna, Chileno Valley
Comment
CAS-BOT-BC111242
Schoenoplectus californicus
John Thomas Howell
1944-9-10
20721
Marin
Marshes north of Olema
Comment
CAS-BOT-BC35556
Scirpus congdonii
John Thomas Howell
1937-7-30
13681
Trinity
Summit of Scott Mtn., north of Carville
Comment
CAS-BOT-BC111010
Scirpus microcarpus
John Thomas Howell
1960-7-19
35645
Plumas
Wet slope near hot springs, Drakesbad.
1828
Comment
CAS-BOT-BC239968
Scribneria bolanderi
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52897
Calaveras
Near Wallace
66
Comment
JEPS59032
Scrophularia californica
John Thomas Howell
1957-5-6
32206 A
San Francisco
Hunters Point.
Comment
CAS-BOT-BC214194
Scutellaria
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-24
54202
Plumas
2.5 miles northeast of Quincy Junction on road to Mt. Hough, Sierra Nevada
1280
Comment
CAS-BOT-BC240056
Secale cereale
John Thomas Howell
1954-5-16
29637
El Dorado
2 miles northwest of Placerville
Comment
CAS-BOT-BC417753
Sedella pumila
John Thomas Howell
1954-5-17
29737
El Dorado
1 mile SW of Garden Valley
609
Comment
GH395107
Sedum kiersteadiae
J. T. Howell
1937-7-25
13502
Unknown
Stuarts Fork of Trinity River
1981
Comment
CAS-BOT-BC64094
Sedum lanceolatum
John Thomas Howell
1937-7-29
13664
Trinity
Scott Mt., on Trinity/Siskiyou county line.
Comment
CAS-BOT-BC69079
Sedum lanceolatum
John Thomas Howell
1942-8-2
15898
Tulare
Slope N of Reflaction Lake
3352
Comment
CAS-BOT-BC64642
Sedum oregonense
John Thomas Howell
1939-8-2
14905
Siskiyou
Spirit Lake, Marble Mts.
1828
Comment
SEINET10470958
Selaginella bigelovii
John Thomas Howell
1927-7-22
Howell 2834
Orange
Claymine Canyon, Santa Ana Mts., On hot and exposed opens between shrubs on very steep hillsides and in the cracks and crevices of sandstone outcrops, Upper Sonoran Zone.
185
Comment
CAS-BOT-BC62143
Selaginella hansenii
John Thomas Howell
1964-4-27
40534
Mariposa
Merced River Canyon just west of El Portal
640
Comment
CAS-BOT-BC327385
Senecio aphanactis
John Thomas Howell
1931-4-13
6340 A
Santa Barbara
Near the west end Santa Cruz Island
Comment
CAS-BOT-BC363337
Senecio aronicoides
John Thomas Howell
1924-6-8
386
Mariposa
Wawona Road to the Big Trees, Wawona Valley
1310
Comment
RSA0012558
Senecio hydrophiloides
J. T. Howell
1949-8-12
26248
Inyo
Cottonwood Creek.
3232
Comment Read comments Jun 21 2019
RSA0012740
Senecio hydrophilus
J. T. Howell
1946-9-20
23014
Marin
Chileno Valley
Comment
CAS-BOT-BC363999
Senecio integerrimus var. major
John Thomas Howell
1925-6-27
1192
Placer
Tahoe Tavern, Lake Tahoe
1889
Comment
CAS-BOT-BC364184
Senecio serra
John Thomas Howell
1951-7-22
28105
Tulare
Mineral King and Vicinity. Mineral King
Comment
CAS-BOT-BC80321
Sequoia sempervirens
John Thomas Howell
1924-3-22
285
Sonoma
Near Camp Meeker
Comment
CAS-BOT-BC240122
Setaria pumila
John Thomas Howell
1959-9-20
34680
Butte
Eastern outskirts of Oroville
60
Comment
CAS-BOT-BC240231
Setaria viridis
John Thomas Howell
1962-7-7
38193
Kern
Wofford
792
Comment
CAS-BOT-BC213108
Sidalcea
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-22
54082
Yuba
About 2 miles northeast of dobbins on Oregon Hill Road, Sierra Nevada.
701
Comment
GH376655
Silene aperta
J. T. Howell
1950-7-17
27003
Unknown
Trail from Bakeoven to Templeton Meadows
2682
Comment
CAS-BOT-BC384314
Silene bernardina
John Thomas Howell
1941-7-31
16542
Madera
Agnew Pass Trail
Comment
CAS-BOT-BC385897
Silene douglasii
John Thomas Howell
1925-6-30
1265
El Dorado
Armstrong's, Emerald Bay, Lake Tahoe
Comment
RSA126121
Silene gallica
J. T. Howell
1952-5-8
28313
San Francisco
Golden Gate Heights, San Francisco.
Comment
RSA97651
Silene gallica
J. T. Howell
1953-6-15
29080
Monterey
Hastings Reservation, Santa Lucia Mountains
Comment
CAS-BOT-BC388956
Silene grayi
John Thomas Howell
1937-7-26
13535
Siskiyou
Caribou Basin, Salmon-Trinity Alps
2286
Comment
CAS-BOT-BC389091
Silene laciniata subsp. californica
John Thomas Howell; Gordon H. True
1971-6-17
48061
Kern
Bodfish Grove of Piute Cypress, 2 miles east of Bodfish Gap
1432
Comment
CAS-BOT-BC389119
Silene laciniata subsp. californica
John Thomas Howell
1923-6-24
87
Mariposa
Ditch Trail, Wawona Valley
1219
Comment
CAS-BOT-BC181340
Silene latifolia
John Thomas Howell
1963-6-3
39385
Plumas
Quincy - Sierra Nevada
1036
Comment
CAS-BOT-BC389551
Silene nuda
John Thomas Howell
1974-7-10
50547
Lassen
Elysian Valley
1325
Comment
CDA3477
Silene pseudatocion
J. T. Howell
1972-4-19
48673
San Francisco
San Francisco.
0
Comment
CAS-BOT-BC389622
Silene sargentii
John Thomas Howell
1946-7-20
22588
Fresno
Ridge south of Mono Rock
3596
Comment
CAS-BOT-BC175085
Silene verecunda
John Thomas Howell
1962-7-11
38578
Kern
North slope of Black Mountain
2255
Comment
RSA287
Silene verecunda subsp. platyota
J. T. Howell
1927-7-10
349
San Bernardino
Big Bear, San Bernardino Mountains.
1828
Comment
CAS-BOT-BC74970
Sinapis arvensis
John Thomas Howell
1957-6-16
32637
San Francisco
San Francisco. Third and Davidson Street.
Comment
CAS-BOT-BC75407
Sisymbrium orientale
John Thomas Howell
1976-5-16
51644
Kern
Delano.
97
Comment
CAS-BOT-BC34696
Solanum lycopersicum
J. T. Howell
1956-9-30
31894
San Francisco
Drumm and Pacific Streets
Comment
CAS-BOT-BC136453
Solanum rostratum
J. T. Howell
1985-7-6
s.n.
Marin
Terra Linda. Nazareth House gardens.
Comment
CAS-BOT-BC156775
Solanum umbelliferum
J. T. Howell
1942-7-26
17251
Tulare
Mineral King
Comment
CAS-BOT-BC157424
Solanum umbelliferum
J. T. Howell
1933-4-22
11033
San Benito
1.5 miles s. of Tres Pinos
Comment
CAS-BOT-BC154219
Solanum umbelliferum
J. T. Howell
1950-8-29
27437
Inyo
Onion Valley road
2530
Comment
CAS-BOT-BC157645
Solanum umbelliferum
John Thomas Howell; Gordon H. True
1970-7-29
47110
Tulare
Just east of Pine Flat on road to Cannell Meadow. Kern Plateau
2255
Comment
CAS-BOT-BC231720
Solanum umbelliferum
John Thomas Howell
1928-5-4
3775
Los Angeles
Near Deer Park, Monrovia Canon [Canyon], San Gabriel Mts.
Comment
RSA1080
Solidago californica
J. T. Howell
1928-6-30
1026
Ventura
Santa Susana Pass
Comment
CAS-BOT-BC364979
Solidago confinis
John Thomas Howell
1970-9-25
47444 28a
Kern
About 2 miles south of Kernville on road to Weldon
792
Comment
CAS-BOT-BC339830
Solidago multiradiata
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-8-12
54507
Mono
Rock Creek road to Rock Creek Lake Basin
2849
Comment
CAS-BOT-BC339883
Solidago multiradiata
John Thomas Howell
1950-7-14
26874
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC365775
Solidago spectabilis
John Thomas Howell
1962-9-25
38929
Kern
South of Kernville below hot springs
792
Comment
CAS-BOT-BC365046
Solidago velutina subsp. californica
John Thomas Howell
1947-6-18
23253
Marin
Chileno Valley
Comment
CAS-BOT-BC365895
Soliva sessilis
John Thomas Howell
1956-6-24
31629
San Francisco
South side of Bayview Hills, San Francisco
Comment
CAS-BOT-BC365829
Soliva sessilis
John Thomas Howell
1964-4-29
40693
Tuolumne
At Tuolumne River bridge, 2.5 miles east of Jacksonville
198
Comment
CAS-BOT-BC365886
Soliva sessilis
John Thomas Howell
1966-4-14
41480
Monterey
Deer Flat Park, Monterey
Comment
CAS-BOT-BC157294
Sorbus californica
John Thomas Howell
1943-7-23
18730
Nevada
Between Donner Pass and West Lake
Comment
RSA263826
Sorghum bicolor
J. T. Howell
1973-11-1
50304
Kern
Bank of Kern River, Hart Memorial Park near Bakersfield
146
Comment
CAS-BOT-BC390093
Spergularia atrosperma
John Thomas Howell; Gordon H. True
1968-5-15
44492
Tulare
About 4 1/2 miles east-northeast of Pixley. Across Road 160
83
Comment
CAS-BOT-BC390182
Spergularia bocconi
John Thomas Howell
1933-5-7
11216
San Francisco
Odd Fellows Cemetery, San Francisco
Comment
CAS-BOT-BC390227
Spergularia bocconi
John Thomas Howell
1953-6-15
29086
Monterey
Hastings Reservation, Santa Lucia Mts.
Comment
RSA0097866
Spergularia bocconi
J. T. Howell
1944-9-24
20744
Marin
Stinson Beach.
Comment
CAS-BOT-BC390244
Spergularia macrotheca var. leucantha
John Thomas Howell
1973-7-25
50006
Merced
Just north of Ingomar on Cottonwood Road to Gustine
30
Comment
CAS-BOT-BC390243
Spergularia macrotheca var. leucantha
John Thomas Howell
1926-5-2
1965
Merced
10 miles sw. of Merced
Comment
CAS-BOT-BC390285
Spergularia macrotheca var. longistyla
John Thomas Howell
1938-4-10
13739
Alameda
Eastern Livermore Valley
Comment
CAS-BOT-BC390886
Spergularia marina
John Thomas Howell
1956-5-12
31367
San Francisco
Marin St., San Francisco
Comment
CDA3438
Spergularia villosa
J. T. Howell
1944-6-25
19643
Marin
Santa Venetia .
Comment
CAS-BOT-BC391037
Spergularia villosa
John Thomas Howell
1956-5-19
31437
San Francisco
Hunters Point, San Francisco
Comment
CAS-BOT-BC339931
Sphaeromeria cana
John Thomas Howell
1947-8-14
24099
Inyo
Inconsolable Range
3962
Comment
CAS-BOT-BC339954
Sphaeromeria cana
John Thomas Howell
1944-8-16
20650
Mono
Mono Pass
Comment
CAS-BOT-BC374805
Stebbinsoseris heterocarpa
John Thomas Howell
1935-4-11
12592
Alameda
Tesla Hills
Comment
CAS-BOT-BC175337
Stellaria borealis subsp. sitchana
John Thomas Howell
1945-8-14
21399
Sonoma
Perry Marsh
Comment
CAS-BOT-BC175350
Stellaria borealis subsp. sitchana
John Thomas Howell
1943-7-4
18261
Marin
Ledum Swamp on road to Pt. Reyes
Comment
CAS-BOT-BC181457
Stellaria obtusa
John Thomas Howell; Gordon H. True
1965-7-14
2252
Nevada
Fall Creek about 5 miles north of Yuba Gap and just east of Lake Bowman Road
1706
Comment
CAS-BOT-BC398281
Stellaria umbellata
John Thomas Howell
1944-8-7
20057
Tuolumne
Tuolumne Meadows
Comment
CAS-BOT-BC375414
Stephanomeria exigua subsp. coronaria
John Thomas Howell
1950-7-16
26936
Tulare
Bakeoven Meadows, South Fork of Kern River
2468
Comment
CAS-BOT-BC375340
Stephanomeria exigua subsp. coronaria
John Thomas Howell
1957-6-25
32763
Kern
Tehachapi Mts., 2.5 miles se. of Keene
914
Comment
POM193913
Stephanomeria lactucina
J. T. Howell
1924-8-11
632
Plumas
2 miles E of Chester on road to Westwood.
1311
Comment
RSA39992
Stephanomeria tenuifolia
J. T. Howell
1944-8-3
19861
Alpine
W side of Sonora Pass.
2348
Comment
CAS-BOT-BC61257
Streptanthus breweri
John Thomas Howell
1955-6-13
30364
Trinity
Peanut.
762
Comment
GH422056
Streptanthus cordatus var. piutensis
J. T. Howell & G. H. True
1971-6-17
48039
Unknown
1 mile east of Bodfish Gap
1310
Comment
CAS-BOT-BC87060
Streptanthus fenestratus
John Thomas Howell
1960-6-6
35335
Fresno
Sierra Nevada. Copper Creek Trail, Kings River Canyon.
1676
Comment
CAS-BOT-BC87774
Streptanthus tortuosus
John Thomas Howell
1943-7-21
18659
Placer
Donner Pass to Mount Lincoln.
Comment
CAS-BOT-BC87783
Streptanthus tortuosus
John Thomas Howell
1966-7-26
41998
Plumas
Sierra Nevada. Injun Jim Campground at confluence of Granite Creek and North Fork of Feather River.
609
Comment
CAS-BOT-BC87900
Streptanthus tortuosus
John Thomas Howell
1942-7-30
17418
Tulare
Little Five Lakes Basin.
3200
Comment
GH422330
Streptanthus tortuosus
J. T. Howell
1963-7-12
39845
Unknown
Meyers
1935
Comment
GH384787
Styrax redivivus
J. T. Howell
1973-7-9
49700
Unknown
Feather River Highway near Bear Ranch Creek
457
Comment
POM261436
Styrax redivivus
J. T. Howell
1940-6-30
15589
Lake
Soda Bay.
Comment
RSA271
Suaeda moquinii
J. T. Howell
1927-7-9
296
San Bernardino
Between Deadman s Point and Box S Ranch, Mojave Desert.
915
Comment
CAS-BOT-BC180101
Swertia albicaulis var. albicaulis
John Thomas Howell
1934-6-30
12294
Modoc
Duncan Horse Camp.
1355
Comment
CAS-BOT-BC234692
Symphoricarpos mollis
John Thomas Howell
1923-8-1
204
Mariposa
Buck Camp Trail, Yosemite Park
Comment
CAS-BOT-BC237006
Symphoricarpos mollis
John Thomas Howell
1967-6-23
42676
Plumas
Canyon of Butterfly Creek, Sierra Nevada
1036
Comment
CAS-BOT-BC269710
Symphoricarpos mollis
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
54012
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on the west slope of Sonoma Mountain
457
Comment
CAS-BOT-BC238898
Symphoricarpos rotundifolius
John Thomas Howell
1977-8-3
52513
Alpine
Just north of Ebbetts Pass
2682
Comment
CAS-BOT-BC238986
Symphoricarpos rotundifolius
John Thomas Howell
1947-7-18
23388
Los Angeles
Blue Ridge, San Gabriel Mts.
2590
Comment
CAS-BOT-BC238995
Symphoricarpos rotundifolius
John Thomas Howell
1969-9-14
46212
Mono
Leavitt Meadow
2194
Comment
CAS-BOT-BC245803
Symphoricarpos rotundifolius
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-7-16
53878
Tulare
Summit ridge of Bald Mountain, Kern Plateau, Sierra Nevada
2834
Comment
CAS-BOT-BC97761
Symphyotrichum chilense
John Thomas Howell
1956-8-19
31790
San Francisco
North side, Bayview Hills
Comment
CAS-BOT-BC97867
Symphyotrichum eatonii
John Thomas Howell
1926-7-27
2143
Plumas
Near Prattville
1463
Comment
CAS-BOT-BC98556
Symphyotrichum lentum
John Thomas Howell
1925-11-27
1564
Solano
Green Valley near Cordelia
Comment
CAS-BOT-BC98470
Symphyotrichum spathulatum
John Thomas Howell
1934-7-4
12412
Shasta
3 miles sw. of Fall River Mills
Comment
CAS-BOT-BC99355
Symphyotrichum spathulatum
John Thomas Howell
1944-8-5
19950
Tuolumne
Soda Springs, Tuolumne Meadows
Comment
UC703208
Symphyotrichum spathulatum
J. Thomas Howell
1941-8-10
16929
Madera
Agnew Meadows
Comment
CAS-BOT-BC98883
Symphyotrichum spathulatum var. intermedium
John Thomas Howell
1936-8-24
12737
Trinity
Summit of Scott Mts. n. of Carrville
Comment
CAS-BOT-BC98255
Symphyotrichum subulatum var. parviflorum
John Thomas Howell
1967-11-3
44034
Tulare
Vernal pool nartural area, about 4.5 miles east-northeast of Pixley
83
Comment
CAS-BOT-BC98347
Symphyotrichum subulatum var. parviflorum
John Thomas Howell
1973-11-1
50294
Kern
Bank of Kern River, Hart Memorial Park near Bakersfield
146
Comment
GH443143
Systenotheca vortriedei
J. T. Howell
1955-7-8
30649
Unknown
Hanging Valley, Santa Lucia Mts.,
838
Comment
CAS-BOT-BC221907
Taeniatherum caput-medusae
John Thomas Howell
1954-5-16
29615
El Dorado
Shingle Springs
426
Comment
CAS-BOT-BC221963
Taeniatherum caput-medusae
John Thomas Howell; Walter Knight; Irja Knight
1987-5-27
6235
Sonoma
Todd Road Preserve
24
Comment
RSA958
Tetradymia comosa
J. T. Howell
1927-7-28
508
Orange
Nolina Canyon, Rancho Santa Ana
152
Comment
CAS-BOT-BC438256
Tetragonia tetragonoides
John Thomas Howell
1956-9-26
31885
San Francisco
San Francisco. Lake Merced
Comment
CAS-BOT-BC392335
Thalictrum fendleri
John Thomas Howell
1946-7-21
22604
Fresno
Fourth Recess
3078
Comment
CAS-BOT-BC392366
Thalictrum fendleri
John Thomas Howell
1938-8-8
14408
Mono
Mammouth [Mammoth] Lakes Basin
Comment
UC1176743
Thalictrum fendleri var. polycarpum
John Thomas Howell
1939-6-18
Marin
Mud Lake Pt. Reyes Peninsula
Comment
CAS-BOT-BC176277
Thamnosma montana
John Thomas Howell
1928-6-19
4028
Inyo
Panamint City, Surprise [Canon] Canyon, Panamint Mts.
2133
Comment
CAS-BOT-BC88015
Thelypodium crispum
John Thomas Howell
1938-8-8
14389
Mono
Long Valley.
Comment
CAS-BOT-BC88240
Thysanocarpus curvipes
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52782
Calaveras
Sierra Nevada. Camp Nine Road northeast of Vallecito.
609
Comment
CAS-BOT-BC88399
Thysanocarpus curvipes
John Thomas Howell
1960-3-26
35190
Kern
Sierra Nevada. Kernville.
Comment
CAS-BOT-BC88400
Thysanocarpus curvipes
John Thomas Howell
1976-5-17
51693
Kern
Sierra Nevada. Greenhorn Mountains. Near headwaters of Lumreau Creek.
1402
Comment
CAS-BOT-BC88505
Thysanocarpus curvipes
John Thomas Howell
1972-4-24
48684
Mariposa
Sierra Nevada. Catheys Valley.
426
Comment
CAS-BOT-BC66464
Thysanocarpus curvipes
John Thomas Howell
1956-3-25
31229
Monterey
13 miles from Greenfield on Jamesburg road.
Comment
CAS-BOT-BC88497
Thysanocarpus curvipes
John Thomas Howell
1960-5-2
35243
Mariposa
Sierra Nevada. Northwest of Coulterville.
Comment
CAS-BOT-BC66952
Thysanocarpus laciniatus
John Thomas Howell
1943-4-11
17911
Marin
Black Canyon, San Rafael Hills.
Comment
CAS-BOT-BC67062
Thysanocarpus laciniatus
John Thomas Howell
1963-5-6
39088
Monterey
Santa Lucia Mountains. 4 miles south of King City on road to Jolon.
121
Comment
CAS-BOT-BC67224
Thysanocarpus laciniatus
John Thomas Howell; Gordon H. True
1967-5-29
42368
Tulare
Sierra Nevada. Kern Plateau. Near north end of Lamont Meadow on road to Chimney Meadow.
1859
Comment
UC421691
Thysanocarpus laciniatus
John Thomas Howell
1930-3-29
4596
San Benito
The Pinnacles
Comment
CAS-BOT-BC67187
Thysanocarpus laciniatus
John Thomas Howell
1931-3-21
5932
Santa Barbara
Cuyama Valley, 28 miles east of Santa Maria.
Comment
UC905052
Torreya californica
John Thomas Howell
1948-5-16
24303
Marin
near top Eldridge Grade; Mt. Tamalpais
Comment
CAS-BOT-BC169197
Toxicodendron diversilobum
John Thomas Howell; Alice Eastwood
1938-5-17
5651
Lake
Near Upper Lake
Comment
CAS-BOT-BC172912
Toxicodendron diversilobum
John Thomas Howell
1936-8-26
12826
Trinity
Near junction of Tangle Blue and Scott Mt. creeks
Comment
CAS-BOT-BC323058
Tracyina rostrata
John Thomas Howell
1967-6-17
42599
Sonoma
On Arthur E. Cooley Ranch at confluence of Galloway adn Dry Creeks, northern Sonoma Co.
182
Comment
UCR89358
Tragopogon dubius
J. T. Howell
1958-8-2
34228
Fresno
Kings River Canyon between Copper Creek and Roaring River.
1524
Comment
CAS-BOT-BC517445
Triantha occidentalis subsp. occidentalis
John Thomas Howell
1948-7-22
24909
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC519391
Triantha occidentalis subsp. occidentalis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1981-6-26
54385
Plumas
Sierra Nevada, 0.25 miles east of Bucks Summit on road to Quincy
1670
Comment
PGM1190
Tribulus terrestris
J. T. Howell
1973-11-4
Monterey
Salinas Valley, King City, in cultivated area (weedy)
Comment
RSA440
Tribulus terrestris
J. T. Howell
1927-7-7
285
Orange
Near ranch house, Rancho Santa Ana.
152
Comment
CAS-BOT-BC111157
Trichophorum clementis
John Thomas Howell
1944-8-8
20108
Tuolumne
Elizabeth Lake
Comment
CAS-BOT-BC111208
Trichophorum clementis
John Thomas Howell
1940-8-4
15985
Tulare
Ouzel Basin
3200
Comment
UCD125846
Trichostema lanceolatum
John Thomas Howell; Gordon H. True
1967-7-6
43219
Tulare
About 4.5 miles east-northeast of Pixley.
83
Comment
UC1177206
Trifolium albopurpureum var. dichotomum
John Thomas Howell
1947-4-27
23104
Marin
w side San Anselmo (type region); Bald Mtn
Comment
UC866824
Trifolium depauperatum var. depauperatum
John Thomas Howell
1938-4-3
13729
San Joaquin
Corral Hollow
Comment
RSA118039
Trifolium depauperatum var. truncatum
J. T. Howell
1955-5-20
30228
Monterey
Summit of Jamesburg Road, Santa Lucia Mts.
Comment
UCD108944
Trifolium fragiferum
John Thomas Howell
1958-7-16
33644
Alameda
UC Berkeley. West of Hilgard Hall.
Comment
UC866961
Trifolium kingii var. productum
John Thomas Howell
1938-8-2
13995
Placer
5 mi n Brockway
Comment
CDA28060
Trifolium variegatum var. major
J. T. Howell, Catherine Best, Wilma Follette, G. H. True
1980-6-19
53716
Marin
Near Abbotts Lagoon, Point Reyes Peninsula.
0
Comment
CAS-BOT-BC451817
Triglochin maritima
John Thomas Howell
1962-7-9
38354
Kern
Isabella
762
Comment
CAS-BOT-BC451853
Triglochin maritima
John Thomas Howell
1944-5-28
19509
Marin
Manzanita
Comment
CAS-BOT-BC451854
Triglochin maritima
John Thomas Howell
1944-5-7
19447
Marin
Larkspur salt marsh
Comment
CAS-BOT-BC451848
Triglochin maritima
John Thomas Howell
1939-5-21
s.n.
Marin
On west side of Tiburon Peninsula
Comment
CAS-BOT-BC451899
Triglochin maritima
John Thomas Howell
1963-9-4
40356
Monterey
Elkhorn Slough
Comment
RSA368930
Triglochin palustris
J. T. Howell
1948-7-26
25073
Tulare
Center Basin.
3415
Comment
CAS-BOT-BC238513
Triphysaria floribunda
John Thomas Howell
1945-6-3
20914
Marin
Near Inverness
Comment
CAS-BOT-BC199584
Trisetum canescens
John Thomas Howell
1951-8-21
28253
Sierra
5 miles from Calpine on road to Blairsden
1524
Comment
CAS-BOT-BC199671
Trisetum canescens
John Thomas Howell
1943-7-23
18741
Nevada
Between Donner Pass and West Lake
Comment
CAS-BOT-BC199704
Trisetum canescens
John Thomas Howell
1973-7-10
49755
Plumas
Near Greenville
1097
Comment
CAS-BOT-BC200109
Trisetum canescens
John Thomas Howell; Catherine Best; Wilma Follette; Gordon True; Mary P. Wells
1981-5-14
54007
Sonoma
Fairfield Osborn Preserve of the Nature Conservancy, 4.5 miles northeast of Penngrove on the west slope of Sonoma Mountain
457
Comment
CAS-BOT-BC193575
Trisetum spicatum
John Thomas Howell
1948-7-22
24910
Fresno
Bubbs Creek Canyon in vicinity of Vidette Meadows
3048
Comment
CAS-BOT-BC200176
Trisetum spicatum
John Thomas Howell
1946-7-14
22298
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC200180
Trisetum spicatum
John Thomas Howell
1946-7-26
22725
Inyo
Mono Mesa
3657
Comment
CAS-BOT-BC200229
Trisetum spicatum
John Thomas Howell; Gordon H. True
1968-7-18
4437
Mono
Basin at north end of Saddlebag Lake, head of Lee Vining Creek
3048
Comment
CAS-BOT-BC200286
Trisetum spicatum
John Thomas Howell
1940-8-1
15786
Tulare
Between Reflection Lake and Harrison Pass
Comment
CAS-BOT-BC200417
Trisetum spicatum
John Thomas Howell
1942-7-31
17464
Tulare
Mt. Kaweah
Comment
UCD93715
Trisetum spicatum
John Thomas Howell
1958-8-17
34583
Madera
Sierra Nevada. East Fork of Granite Creek.
2362
Comment
CAS-BOT-BC200448
Trisetum wolfii
John Thomas Howell
1946-7-14
22282
Inyo
Mosquito Flat, Rock Creek Lake Basin
3139
Comment
CAS-BOT-BC200453
Trisetum wolfii
John Thomas Howell
1960-8-23
36445
Shasta
Lassen Loop above Little Hot Springs Valley
2407
Comment
CAS-BOT-BC521617
Triteleia hyacinthina
John Thomas Howell; Barbara T. Menzies; Roberta Shockey
1978-5-17
52893
Calaveras
Sierra Nevada, near Wallace, Upper Sonoran Zone
66
Comment
CAS-BOT-BC522038
Triteleia ixioides subsp. anilina
John Thomas Howell
1954-6-6
29942
Tuolumne
Twain Harte, Sierra Nevada
1127
Comment
CAS-BOT-BC522155
Triteleia laxa
John Thomas Howell
1925-3-22
811
Alameda
Arroyo Mocho
Comment
CAS-BOT-BC67396
Tropidocarpum gracile
John Thomas Howell
1944-4-30
19424
Alameda
Portuguese Flat, Oakland Hills above Mills College.
Comment
CAS-BOT-BC74135
Turritis glabra
John Thomas Howell; Gordon H. True
1966-7-11
41666
Tulare
Sierra Nevada. Kern Plateau. Poison Meadow.
2286
Comment
CAS-BOT-BC77655
Ulmus pumila
John Thomas Howell; Gordon H. True
1966-7-10
41603
Tulare
Along road in Kern River Canyon at Roads End, at Fairview
1066
Comment
NY500467
Ulmus pumila
J. T. Howell
1978-4-20
52869
Lassen
Susanville
1296.9
Comment
CAS-BOT-BC91137
Umbellularia californica
John Thomas Howell
1928-2-9
3333
Los Angeles
Floor of Santa Anita Canon [Canyon], San Gabriel Mountains.
Comment
CAS-BOT-BC91170
Umbellularia californica
John Thomas Howell
1975-6-4
51021
Mariposa
Sierra Nevada. Yosemite Valley. Glacier Point talus near Camp Curry.
1219
Comment
CAS-BOT-BC381862
Uropappus lindleyi
John Thomas Howell; Gordon H. True
1971-6-17
48049
Kern
1 mile east of Bodfish Gap
1310
Comment
CAS-BOT-BC404084
Urtica dioica subsp. holosericea
John Thomas Howell
1948-7-29
25175
Fresno
Bubbs Creek Canyon
2834
Comment
CAS-BOT-BC404151
Urtica dioica subsp. holosericea
John Thomas Howell
1966-7-20
41991
Marin
Area adjacent to the John Thomas Howell Botanical Garden, Tiburon
Comment
CAS-BOT-BC404180
Urtica dioica subsp. holosericea
John Thomas Howell
1963-8-6
40028
Monterey
Santa Lucia Mountains. Abbott Lakes, Arroyo Seco Forest Service Campground
Comment
UC1176759
Urtica dioica subsp. holosericea
John Thomas Howell
1945-8-5
21365
Marin
near Stinson Beach
Comment
UC473472
Urtica dioica subsp. holosericea
John Thomas Howell
1928-6-19
4041
Inyo
Panamint Mountains, Surprise Canyon Surprise Canyon; Panamint Mountains, Surprise Canyon
Comment
CAS-BOT-BC193966
Vaccinium cespitosum
John Thomas Howell
1941-7-22
16404
Inyo
Mono Pass Trail
3352
Comment
CAS-BOT-BC199432
Vaccinium shastense subsp. nevadense
John Thomas Howell
1924-5-26
353
Mariposa
Near Wawona
1219
Comment
CAS-BOT-BC199460
Vaccinium shastense subsp. nevadense
John Thomas Howell; Gordon H. True
1970-5-28
5357
Nevada
Skillman Flat on Washington Ridge, ca. 12 mi. E. of Nevada City
1341
Comment
CAS-BOT-BC391343
Velezia rigida
John Thomas Howell; H. Keith Wagnon
1980-5-26
53580
Butte
Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge
Comment
UCD139934
Veratrum californicum var. californicum
John Thomas Howell
1960-8-20
36278
Plumas
Lassen Volcanic National Park. Drakesbad.
1676
Comment
SEINET1007899
Verbena brasiliensis
John Thomas Howell
1954-1
30055
Amador
Mokelumne River Bridge on Highway 49. Between Jackson and Mokelumne Hill. Type region of V. Hansenii
Comment
CDA36585
Viola pinetorum subsp. grisea
J. T. Howell, G. H. True
1970-6-26
46835
Tulare
Kern Plateau, Sierra Nevada; True Meadow.
Comment
CAS-BOT-BC203074
Vitis californica
John Thomas Howell
1924-7-13
463
Mariposa
Wawona Valley
1219
Comment
CAS-BOT-BC198836
Vulpia bromoides
John Thomas Howell
1963-5-18
39341
Monterey
2.5 miles south of Aromas
60
Comment
CAS-BOT-BC198865
Vulpia bromoides
John Thomas Howell
1937-5-23
13003
San Francisco
Presidio, San Fransisco
Comment
CAS-BOT-BC199970
Vulpia microstachys var. ciliata
John Thomas Howell
1948-4-18
24205
Sonoma
Hills east of Aqua Caliente
Comment
GH341834
Vulpia microstachys var. ciliata
J. T. Howell
1939-4-30
14624
Unknown
Walter Springs
Comment
RSA300184
Vulpia microstachys var. ciliata
J. T. Howell, Gordon H. True
1968-5-13
44247
Tulare
North Meadow Creek; Kern Plateau.
1982
Comment
UCD93845
Vulpia microstachys var. ciliata
John Thomas Howell
1963-5-6
39124
Monterey
top of Jolon Garde, Santa Lucia Mountains.
426
Comment Read comments Mar 3 2012
SBBG41110
Vulpia microstachys var. confusa
J. T. Howell
1954-5-10
Fresno
near Alder Springs
1402
Comment
CAS-BOT-BC183999
Vulpia microstachys var. microstachys
John Thomas Howell
1938-5-22
13793
Marin
San Anselmo Canyon
Comment
CAS-BOT-BC184157
Vulpia microstachys var. pauciflora
John Thomas Howell; Gordon H. True; Barbara T. Menzies; Roberta Shockey
1978-4-5
52796
Calaveras
Near Stanislaus River bridge, Camp Nine Road northeast of Vallecito
335
Comment
CAS-BOT-BC184184
Vulpia microstachys var. pauciflora
John Thomas Howell
1962-6-16
37561
Butte
Magalia
731
Comment
CAS-BOT-BC184242
Vulpia microstachys var. pauciflora
John Thomas Howell
1960-3-26
35192
Kern
Kernville
Comment
CAS-BOT-BC184347
Vulpia microstachys var. pauciflora
John Thomas Howell
1945-5-6
20801
Marin
San Rafael Hills
Comment
CAS-BOT-BC184640
Vulpia microstachys var. pauciflora
John Thomas Howell
1953-5-22
28988
Tuolumne
Cedar Ridge Road near Twain Harte
1066
Comment
GH341852
Vulpia microstachys var. pauciflora
J. T. Howell
1957-5-5
32167
Unknown
San Francisco, Serpentine cut, east end of 22nd st.
Comment
RSA127236
Vulpia microstachys var. pauciflora
J. T. Howell
1946-5-14
21838
Marin
Between Barths Retreat and Potrero Meadow, Mt. Tamalpais.
Comment
UCD94782
Vulpia myuros
John Thomas Howell
1962-5-22
37296
Tulare
Kern River Canyon above Roads End.
1097
Comment
CAS-BOT-BC184666
Vulpia myuros subsp. megalura
John Thomas Howell
1963-7-10
39678
Alpine
At Grover Hot Springs
1798
Comment
GH361316
Vulpia myuros var. hirsuta
J. T. Howell
1962-5-22
37296
Unknown
Kern River Canyon above Roads End
1097
Comment
GH361328
Vulpia myuros var. hirsuta
J. T. Howell
1938-6-19
13914
Unknown
Zigzag Fire Trail, Mt. Tamalpais
Comment
RSA44480
Vulpia myuros var. hirsuta
J. T. Howell
1948-3-29
24201
Solano
About five miles north of Vallejo.
Comment
CAS-BOT-BC178593
Vulpia myuros var. myuros
John Thomas Howell
1967-3-14
42039
Monterey
On San Simeon Hwy. at Pt. Sur
Comment
CAS-BOT-BC185870
Vulpia octoflora var. hirtella
John Thomas Howell
1958-5-24
33318
Inyo
Whitney Portal road
1981
Comment
CAS-BOT-BC185971
Vulpia octoflora var. octoflora
John Thomas Howell
1941-5-25
16200
Marin
West Point to West Peak, Mt. Tamalpais
Comment
RSA1433
Wolffiella lingulata
J. T. Howell
1928-9-6
1204
Orange
Santa Ana River, Rancho Santa Ana.
152
Comment
SEINET11770036
Wolffiella lingulata
J. T. Howell
1932-1
10790
San Joaquin
Holt
Comment
CAS-BOT-BC77761
Woodsia scopulina
John Thomas Howell
1940-8-4
15990
Tulare
Ouzel Basin
3200
Comment
CAS-BOT-BC326982
Wyethia longicaulis
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-5-19
53475
Trinity
Rattlesnake Road 0.73 to 1.5 miles southwest of Peanut
853
Comment
CAS-BOT-BC383445
Wyethia mollis
John Thomas Howell
1944-7-15
19798
Glenn
Canyon of Snow Basin Creek
Comment
CAS-BOT-BC383647
Xanthium spinosum
John Thomas Howell; H. Keith Wagnon
1980-5-27
53683
Plumas
Quincy
1051
Comment
CAS-BOT-BC383750
Xanthium strumarium
John Thomas Howell
1959-9-21
34804
Plumas
Near Paxton
883
Comment
CAS-BOT-BC383769
Xanthium strumarium
John Thomas Howell
1932-10-16
10848
San Joaquin
Bed of Corral Hollow Creek, 8 miles from Tracy on Tesla Road
Comment
CAS-BOT-BC196886
Xylococcus bicolor
John Thomas Howell
1977-3-9
52317
San Diego
North of Escondido on highway to Temecula
Comment
CAS-BOT-BC326964
Xylorhiza cognata
John Thomas Howell
1928-1-29
3293
Riverside
Painted Canyon, Colorado Desert
Comment
CAS-BOT-BC326907
Xylorhiza orcuttii
John Thomas Howell
1928-3-24
3490
San Diego
Near Palm Wash, w. Colorado Desert
Comment
CAS-BOT-BC527204
Zigadenus micranthus
John Thomas Howell; T. C. Fuller; G. D. Barbe
1980-5-19
53473
Trinity
Rattlesnake road 0.73 to 1.5 miles southwest of Peanut
853
Comment
CAS-BOT-BC531975
Zigadenus venenosus
John Thomas Howell
1958-7-24
33891
Fresno
Simpson Meadow, Middle Fork of the Kings River
1828
Comment
CAS-BOT-BC533082
Zigadenus venenosus
John Thomas Howell
1960-7-22
35926
Plumas
Devils Kitchen, near Drakesbad; Lassen Volcanic National Park
1828
Comment
RSA1042
Ziziphus parryi
J. T. Howell
1927-8-1
s.n.
San Bernardino
Morongo Valley.
915
Comment