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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
JEPS42648
Acer macrophyllum
W. L. Jepson
1916-10-28
6853 a
Contra Costa
Las Trampas Creek
Comment
UC1199010
Acer negundo
Joseph P. Tracy
1934-4-30
13187
Contra Costa
Lafayette
152
Comment
UC18099
Acer negundo
J. Burtt Davy
1895-4-13
1012
Contra Costa
Lafayette
Comment
POM284638
Acer negundo subsp. californicum
Lyman D. Benson
1931-3-18
2656
Contra Costa
Walnut Creek.
61
Comment
GH363650
Acer negundo var. californicum
W. L. Jepson
1908-8-16
3088
Unknown
2 miles west of Walnut Creek
Comment
JEPS42724
Acer negundo var. californicum
W. L. Jepson
1908-8-16
3088
Contra Costa
2 mi w Walnut Creek; w of Walnut Creek
Comment
JEPS42725
Acer negundo var. californicum
W. L. Jepson
1908-8-16
3084
Contra Costa
Walnut Creek
22
Comment
UC1046583
Achyrachaena mollis
Alex D. Hawkes and R. Bacigalupi
1951-4-12
4775
Contra Costa
meadow near Walnut Creek
Comment
CDA19102
Acroptilon repens
R. Fonseca
2000-10-24
PDR 041911
Contra Costa
San Francisco Bay Region; Along Hwy 680 Contra Costa Blvd off-ramp on Monument St., Pleasant Hill.
0
Comment Read comments May 27 2008
CDA19145
Acroptilon repens
R. M. Case
2001-7-1
PDR P 088757
Contra Costa
San Francisco Bay Region; In East Bay Municipal Utility District Water Department on Hookston Rd 1, Pleasant Hill.
0
Comment
CAS-BOT-BC65622
Adiantum jordanii
D. E. Breedlove
1970-4-18
17432
Contra Costa
at the north edge of Lafayette above Laurel Drive
243
Comment
POM136961
Aesculus californica
Ivar Tidestrom
1895-06
s.n.
Contra Costa
[No location information on label.]
Comment
JEPS100030
Agrostis exarata
A. Langston
2003-6-6
AL 35
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
JEPS100031
Agrostis exarata
S. O'Neil
2003-6-24
SEO 41
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UCD150904
Agrostis stolonifera
James A. Neilson Jr.
1972-10-1
3513
Contra Costa
Walnut Creek drainage. Elevation estimated in Google Earth by label maker.
1
Comment
JEPS95266
Allium paniculatum var. paniculatum
Doris E. Baltzo
1999-7-20
Contra Costa
2092 Ahneita Drive, Pleasant Hill
Comment
UC3107
Allium serra
Brewer
1022
Contra Costa
Walnut Creek
Comment
JEPS58626
Alnus rhombifolia
F. W. Bancroft
1894-10-1
Contra Costa
Walnut Creek
Comment
GH341409
Alopecurus saccatus
W. H. Brewer
1860-1-1
1042
Unknown
Walnut Creek, Cal.
Comment Read comments Dec 4 2015
UC37122
Alopecurus saccatus
W. H. Brewer
1862-5-1
1042
Contra Costa
Walnut Creek
Comment
UC12066
Amelanchier utahensis
W. H. Brewer
1862-5-1
1036
Contra Costa
s of Camp 69
Comment
UC725369
Amsinckia intermedia
A. A. Heller
1938-4-9
15014
Contra Costa
in an orchard near Walnut Creek
Comment
CAS-BOT-BC222464
Amsinckia lunaris
Joseph P. Tracy
1934-4-30
13196
Contra Costa
Near Lafayette
152
Comment
SD6735
Amsinckia lunaris
Edward L. Greene
1887-4-16
Contra Costa
Comment
UC525560
Amsinckia lunaris
Joseph P. Tracy
1934-4-30
13196
Contra Costa
near Lafayette; Coast Ranges
152
Comment
CHSC75115
Anagallis arvensis
Roger Thom
1987-5-26
21
Contra Costa
2800 block of Buena Vista Ave. Walnut Creek.
30
Comment
CAS-BOT-BC400255
Anemopsis californica
A. D. E. Elmer
1903-6-1
4870
Contra Costa
Walnut Creek
Comment
CAS-BOT-BC400256
Anemopsis californica
A. D. E. Elmer
1903-6-1
4870
Contra Costa
Walnut Creek
Comment
JEPS12265
Anemopsis californica
J. W. Blankinship
1913-6-16
Contra Costa
Walwood, Ygnacio Valley Ygnacio Valley; Walwood, Ygnacio Valley
Comment
UC306614
Anemopsis californica
A. D. E. Elmer
June, 1903
4870
Contra Costa
Walnut Creek
Comment
CHSC75049
Anthemis cotula
Roger Thom
1987-5-27
24
Contra Costa
1900 block of Olympic Blvd. (at Newell Ave.), Walnut Creek.
15
Comment
JEPS100137
Anthriscus caucalis
G. Smick
2003-4-29
GAS 148
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
CDA39735
Apocynum cannabinum
D. G. Kelch
2004-7-9
4 .306
Contra Costa
Carquinez Strait; Alhambra Creek, Martinez, near Muir gravesite, Arroyo del Hambre.
Comment
JEPS111632
Apocynum cannabinum
D. G. Kelch
2004-7-9
04 .306
Contra Costa
Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite
60
Comment
UC571094
Arbutus menziesii
H. L. Mason
1924-11-23
1160
Contra Costa
Cashion Canyon
Comment
CAS-BOT-BC24850
Arctostaphylos glandulosa subsp. glandulosa
H. E. McMinn
1923-3-6
875
Contra Costa
Contra Costa Co.
Comment
UC2046014
Arctostaphylos viscida subsp. mariposa
Stephen W. Edwards
July, 2012
s.n.
Contra Costa
Pleasant Hill, along Taylor Blvd.
Comment
CAS-BOT-BC400403
Aristolochia californica
D. E. Breedlove
1970-4-18
17444
Contra Costa
At the north edge of Lafayette above Laurel Drive
243
Comment
SJSU6159
Aristolochia californica
C. O. Dudley
1966-5-1
106
Contra Costa
Reliez Valley, Briones Hills N of Lafayette
152
Comment
UC581133
Aristolochia californica
H. L. Mason
1934-1-20
7995
Contra Costa
<Casihon> Creek (Las Trampas Creek)
Comment
UC449651
Artemisia californica
W. P. Taylor
1912-7-16
Contra Costa
2 mi sw Walnut Creek
121
Comment
JEPS99962
Artemisia douglasiana
A. Langston
2003-7-28
AL 74
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
CHSC75046
Asclepias fascicularis
Roger Thom
1987-5-18
10
Contra Costa
Calif. State University Hayward's Contra Costa Campus. 3100 Oak Park Blvd. Pleasant Hill.
30
Comment
JEPS100125
Asclepias fascicularis
A. Langston
2003-7-24
AL 69
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC22985
Asclepias fascicularis
Edw. L. Greene
June 1892
Contra Costa
Walnut Creek
Comment
UCD150890
Asclepias fascicularis
James A. Neilson Jr.
1972-11-2
3600
Contra Costa
Walnut Creek drainage. Elevation estimated using Google Earth by label maker.
1
Comment
UCD158698
Atriplex prostrata
James A. Neilson Jr.
1972-11-2
3620
Contra Costa
Walnut Creek drainage. Elevation estimated in Google Earth by label maker.
1
Comment
UCD158699
Atriplex prostrata
James A. Neilson Jr.
1972-10-22
3509
Contra Costa
Walnut Creek drainage. Elevation estimated in Google Earth by label maker.
1
Comment
JEPS100027
Avena fatua
A. Langston
2003-6-6
AL 37
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UCD150885
Baccharis glutinosa
James A. Neilson Jr.
1972-11-9
s.n.
Contra Costa
Walnut Creek drainage. Elevation estimated using Google Earth by label maker.
1
Comment
UCD158697
Beta vulgaris subsp. maritima
James A. Neilson Jr.
1972-11-2
3613
Contra Costa
Walnut Creek drainage. Elevation estimated in Google Earth by label maker.
1
Comment
UCD158710
Beta vulgaris subsp. maritima
James A. Neilson Jr.
1972-11-2
3613 a
Contra Costa
Walnut Creek drainage. Elevation estimated in Google Earth by label maker.
1
Comment
CAS-BOT-BC100335
Blepharizonia plumosa
R. F. Hoover
1937-9-2
2708
Contra Costa
Walnut Creek
Comment
CAS-BOT-BC100338
Blepharizonia plumosa
R. F. Hoover
1937-9-2
2708
Contra Costa
Walnut Creek
Comment
JEPS18818
Blepharizonia plumosa
R. F. Hoover
1937-9-2
2708
Contra Costa
Walnut Creek
Comment
JEPS18824
Blepharizonia plumosa
R. F. Hoover
1935-9-7
715
Contra Costa
Walnut Creek
Comment
UC761853
Blepharizonia plumosa
R. F. Hoover
1935-9-7
715
Contra Costa
Walnut Creek
Comment
UC761865
Blepharizonia plumosa
R. F. Hoover
1937-9-2
2708
Contra Costa
Walnut Creek
Comment
CHSC75072
Brassica rapa
Roger Thom
1987-5-26
18
Contra Costa
2800 block of Buena Vista Ave. Walnut Creek. In waste lot.
30
Comment
CHSC75136
Bromus carinatus
Roger Thom
1987-4-21
3
Contra Costa
3300 block Johnson Rd. Lafayette.
152
Comment
UC697129
Bromus carinatus var. carinatus
Mary L. Bowerman
1935-5-1
2947
Contra Costa
West Road 6.7 mi from entrance, Mount Diablo West Road; Mount Diablo, West Road
640
Comment
CAS-BOT-BC156061
Bromus diandrus
D. E. Breedlove
1970-4-18
17439
Contra Costa
At the north edge fo Lafayette above Laurel Drive.
243
Comment
JEPS100025
Bromus diandrus
S. O'Neil
2003-5-7
SEO 29
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
POM300671
Bromus diandrus
Mary L. Bowerman
1935-4-26
2921
Contra Costa
Mount Diablo.
1159
Comment
UC60206
Bromus hordeaceus
Jos. Burtt Davy
1899-4-19
7866
Contra Costa
Las Trampas Creek
Comment
CAS-BOT-BC438367
Calandrinia ciliata
V. Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Valley
Comment
JEPS99971
Calandrinia ciliata
G. Smick
2003-4-8
GAS 134
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC1136613
Calandrinia ciliata
R. W. Lundh
1933-3-25
219
Contra Costa
1 mi w and 1/2 mi n Lafayette (Acalanes Grant); Concord Quadrangle
Comment
CHSC24837
Calandrinia ciliata var. menziesii
M. A. Callahan
1976-4-14
14
Contra Costa
Small pop. 5 m. from roadside w of house at 1976 Mohawk Dr. Pleasant Hill.
115
Comment
UC1618318
Calochortus luteus
Barbara Ertter with Travis Columbus
1990-6-10
9098
Contra Costa
w of Pleasant Hill (trail heading down ridge on n side of Briones Peak, at jct with Spengler Trail, ne corner of Briones Regional Park, Briones Hills); Briones Hills, Briones Regional Park
274
Comment
CAS-BOT-BC132493
Calochortus pulchellus
D. E. Breedlove
1970-4-18
17425
Contra Costa
At the north edge of Lafayette above Laurel Drive
243
Comment
RSA215950
Calochortus pulchellus
D. E. Breedlove
1970-4-18
17425
Contra Costa
At the north edge of Lafayette above Laurel Drive
244
Comment
SBBG52847
Calochortus umbellatus
M. L. Long
-Apr-1978
Contra Costa
hills W of Rossmoor, Walnut Crk
Comment Read comments Jan 28 2012
UC1601662
Calochortus umbellatus
W. H. Brewer
1862-5-1
1035
Contra Costa
s of Camp 69; Walnut Creek
Comment
UC1601667
Calochortus umbellatus
Brewer
1890-1
1035
Contra Costa
Walnut Creek
Comment
UC1197881
Calystegia subacaulis subsp. subacaulis
Joseph P. Tracy
1934-4-30
13192
Contra Costa
Near Lafayette.
152
Comment
GH378896
Cardamine californica
W. H. Brewer
1860-1-1
1039
Unknown
Walnut Creek
Comment
JEPS53386
Cardamine californica
J. Burtt Davy
1895-4-13
1006
Contra Costa
near Lafayette; near Lafayette
Comment
UC1126900
Cardamine californica
R. W. Lundh
1933-3-20
215
Contra Costa
2 mi nw Walnut Creek, Canada del Hambro; Concord Quad.
182
Comment
UC10326
Cardamine californica var. integrifolia
W. H. Brewer
1862-5-1
1039
Contra Costa
Walnut Creek
Comment
UC10419
Cardamine californica var. integrifolia
W. H. Brewer
1862-5-1
1039
Contra Costa
Walnut Creek
Comment
JEPS100083
Cardamine oligosperma
G. Smick
2003-5-30
GAS 200
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
CDA33124
Carex barbarae
D. G. Kelch, A. G. Murdock
2004-7-9
04 .305-B
Contra Costa
Carquinez Strait; Alhambra Creek, Martinez, near Muir gravesite, Arroyo del Hambre.
Comment
JEPS111620
Carex obnupta
D. G. Kelch
2004-7-9
04 .305
Contra Costa
Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite
60
Comment
JEPS111897
Carex obnupta
D. G. Kelch
2004-7-9
04 .305
Contra Costa
Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite
60
Comment
UC590537
Carex subbracteata
W. H. Brewer
1012
Contra Costa
Walnut Creek
Comment Read comments Oct 23 2009
UC7991
Carex subbracteata
W. H. Brewer
1012
Contra Costa
Walnut Creek
Comment
UC8054
Carex subbracteata
Brewer
1862-4-30
1012
Contra Costa
Walnut Creek
Comment
UC26516
Castilleja affinis subsp. affinis
W. H. Brewer
1862-5-1
1041
Contra Costa
Walnut Creek
Comment
CHSC24847
Castilleja exserta
M. A. Callahan
1976-4-11
10
Contra Costa
Top of ridfe 140 m. ene of house at 1976 Mohawk Dr. Pleasant Hill.
152
Comment
CHSC24923
Castilleja subinclusa subsp. franciscana
M. A> Callahan
1976-4-11
6
Contra Costa
120 m ne of house at 1976 Mohawk Dr. Pleasant Hill on w slope.
132
Comment
JEPS99959
Centaurea calcitrapa
A. Langston
2003-7-28
AL 76
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
CHSC75053
Centaurea solstitialis
Roger Thom
1987-5-28
25
Contra Costa
3300 block of Johnson Rd. 0.3 mi from intersection with Reliez Valley Rd. Lafayette.
137
Comment
JEPS35031
Centromadia fitchii
W. L. Jepson
1895-9-14
Contra Costa
Walnut Creek
Comment
UC702537
Centromadia fitchii
L. S. Rose
1941-10-13
41464
Contra Costa
1 mi e Walnut Creek
50
Comment
JEPS35034
Centromadia pungens subsp. pungens
W. L. Jepson
1895-9-14
Contra Costa
Walnut Creek
Comment
UC306676
Centromadia pungens subsp. pungens
A. D. E. Elmer
1903-5-1
4392
Contra Costa
Walnut Creek
Comment
JEPS103081
Cestrum parqui
Marck Menke
1998-12-25
30
Contra Costa
S of Martinez (along upper Alhambra Creek beside Alhambra Creek Trail); Briones Regional Park
Comment
CHSC75078
Chenopodium album
Roger Thom
1987-5-27
23
Contra Costa
1900 block of Olympic Blvd. (at Newell Ave.) Walnut Creek.
15
Comment
JEPS111800
Chenopodium murale
D. G. Kelch
2004-7-9
04 .308
Contra Costa
Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite
60
Comment
CHSC75054
Cichorium intybus
Roger Thom
1987-5-26
16
Contra Costa
1900 block of Geary Rd. Walnut Creek
30
Comment
JEPS99955
Cirsium vulgare
A. Langston
2003-7-28
AL 75
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
CHSC75102
Clarkia unguiculata
Roger Thom
1987-5-18
12
Contra Costa
1.0 mi from intersection with Pleasant Hill Rd. on Reilez Valley Rd. Lafayette (1600 block). Road cut.
182
Comment
UC1586096
Clarkia unguiculata
Barbara Ertter with Travis Columbus
1990-6-10
9105
Contra Costa
w Pleasant Hill (hillside above junction of Spengler and Blue Oak trail, ne corner of park); Briones Regional Park, Briones Hills
274
Comment
UC1300963
Claytonia perfoliata subsp. perfoliata
Helen K. Sharsmith
1962-3-25
4910
Contra Costa
hills between Happy Valley and Alhambra Valley; San Francisco Bay Region
304
Comment
CAS-BOT-BC91355
Clematis lasiantha
V. Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Valley.
Comment
GH369667
Clematis lasiantha
H. N. Bolander
1864-1-1
124
Unknown
Walnut Creek
Comment
UC2031506
Clematis lasiantha
Barbara Ertter with Travis Columbus
1990-6-10
9104
Contra Costa
NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill ridge ENE of Briones Peak
Comment
CHSC75080
Convolvulus arvensis
Roger Thom
1987-5-13
8
Contra Costa
Calif. State University Hayward's Contra Costa Campus. 3100 Oak Park Blvd. Pleasant Hill.
30
Comment
CDA21753
Conyza canadensis
D. G. Kelch, A. G. Murdock
2005-7-14
5 .463
Contra Costa
Carquinez Strait Region; Arroyo del Hambre; Franklin Creek near Glen Frazier.
Comment
CAS-BOT-BC209749
Cornus glabrata
V. Rattan
1887-5-22
s.n.
Contra Costa
Alhambra
Comment
CAS-BOT-BC209750
Cornus glabrata
V. Rattan
1887-5-22
s.n.
Contra Costa
Alhambra
Comment
UC192419
Cornus glabrata
E. L. Greene
1886-5-25
Contra Costa
Walnut Creek
Comment
CDA19637
Crepis bursifolia
Doreen Smith, Wilma Follette
2003-10-25
s.n.
Contra Costa
San Francisco Bay Area; Briones Park.
0
Comment
UCD150913
Cressa truxillensis
James A. Neilson Jr.
1972-11-2
3616
Contra Costa
Walnut Creek drainage. Elevation estimated in Google Earth by label maker.
1
Comment
UC1121528
Crocanthemum scoparium var. vulgare
R. W. Lundh
Contra Costa
San Francisco Quadrangle
Comment
JEPS99953
Cynara cardunculus
A. Langston
2003-7-17
AL 67
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
JEPS100021
Cynodon dactylon
S. O'Neil
2003-6-24
SEO 40
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC40178
Cynodon dactylon
Jos. Burtt Davy
1900-6-7
6656
Contra Costa
Pacheco
Comment
UC1063875
Cynoglossum grande
R. W. Lundh
1933-3-14
213
Contra Costa
3 1/2 mi. n. Lafayette (Canada del Hambre); Concord Quad., Canada del Hambre
152
Comment
UCD150887
Cyperus esculentus
James A. Neilson Jr.
1972-11-2
3615
Contra Costa
Walnut Creek drainage. Elevation estimated using Google Earth by label maker.
1
Comment
CHSC24924
Delphinium patens subsp. patens
M. A. Callahan
1976-4-12
5
Contra Costa
On ne slope 90 m s of roadhead on Mohawk Dr. Pleasant Hill.
Comment
UC9152
Delphinium patens subsp. patens
J. Burtt Davy
1895-4-13
1008
Contra Costa
near Lafayette
Comment
UC9159
Delphinium patens subsp. patens
W. H. Brewer
1862-4-30
1017
Contra Costa
Walnut Creek, Camp 69 Walnut Creek; , Camp 69
Comment
UC1300933
Dichelostemma capitatum
Helen K. Sharsmith
1962-3-25
4909
Contra Costa
hills between Happy Valley and Alhambra Valley; San Francisco Bay Region
304
Comment
CAS-BOT-BC150328
Diplacus aurantiacus
D. E. Breedlove
1970-4-18
17427
Contra Costa
At the north edge of Lafayette above Laurel Drive
243
Comment
UCD54987
Downingia pulchella
Peter M. Ray; S. G. Smith and F. Chisaki
1951-4-14
1980
Contra Costa
Small pond 7 miles north of Walnut Creek; east of Highway #21; 0.2 mile south of intersection with highway 4.
6
Comment
UCD150886
Dysphania ambrosioides
James A. Neilson Jr.
1972-11-9
s.n.
Contra Costa
Walnut Creek drainage. Elevation estimated using Google Earth by label maker.
1
Comment
POM319552
Echinochloa crus-galli
Patricia Wilder
1961-8-29
1098 a
Contra Costa
Walnut Creek, near Calif. Hwy 24 west side of city; Coast Mt. Range
42
Comment
JEPS45767
Elatine heterandra
W. L. Jepson
1891-5-22
13954
Contra Costa
Walnut Creek
Comment
UC691973
Eleocharis rostellata
Mary L. Bowerman
1933-4-22
1883
Contra Costa
Shell Ridge, NW end, just S of the highway Mount Diablo (Heather Farm)
Comment
SEINET12755579
Elymus triticoides
J. B. Davy
1900-6-7
6658
Contra Costa
Near Pacheco.
Comment
UCD150882
Epilobium brachycarpum
James A. Neilson Jr.
1972-11-2
3605
Contra Costa
Walnut Creek drainage. Elevation estimated using Google Earth by label maker.
1
Comment
JEPS100099
Eremocarpus setiger
A. Langston
2003-7-9
AL 64
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UCD150888
Erigeron canadensis
James A. Neilson Jr.
1972-11-2
3607
Contra Costa
Channel of Walnut Creek ca. 1 mi. north of junction of Pine Creek Elevation estimated using Google Earth by label maker.
1
Comment
UC31470
Erigeron foliosus var. franciscensis
Edw. L. Greene
1892-6-20
Contra Costa
Walnut Creek
Comment
UC31514
Erigeron philadelphicus var. philadelphicus
J. Burtt Davy
1895-4-13
1007
Contra Costa
near Lafayette
Comment
JEPS56455
Eriogonum roseum
Willis L. Jepson
1895-9-14
14779
Contra Costa
Walnut Creek
Comment
SEINET3836874
Eriogonum roseum
W. L. Jepson
1895-9-14
14779
Contra Costa
Walnut Creek
Comment
CHSC75094
Erodium moschatum
Roger Thom
1987-5-26
17
Contra Costa
1900 block of Geary Rd. Walnut Creek.
30
Comment
CAS-BOT-BC402981
Eschscholzia californica
A. Eastwood
1894-5-4
s.n.
Contra Costa
Walnut Cr.
Comment
CHSC75109
Eschscholzia californica
Roger Thom
1987-4-21
6
Contra Costa
3300 block of Johnson Rd. Lafayette.
167
Comment
OBI69745
Eucalyptus pulverulenta
Jenn Yost & Matt Ritter, Matt Ritter
2008-11-15
362
Contra Costa
Dan Sekella's House at 1410 Mohr Ct, Walnut Crk
Comment
CHSC75081
Euphorbia peplus
Roger Thom
1987-5-24
15
Contra Costa
1510 Carmel Dr. Walnut Creek. Rose garden.
30
Comment
CHSC75044
Foeniculum vulgare
Roger Thom
1987-5-18
13
Contra Costa
1.0mi from intersection with Pleasant Hill Rd on Reliez Valley Road. Lafayette. (1600 block)
182
Comment
UC2013031
Galium parisiense
Barbara Ertter with Travis Columbus
1990-6-10
9107
Contra Costa
NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; above junction of Spengler and Blue Oaks trails.
Comment
UC1300816
Geranium molle
Helen K. Sharsmith
1962-4-18
4956
Contra Costa
Reliez Valley Road San Francisco Bay Region
152
Comment
CHSC75085
Glycyrrhiza lepidota
Roger Thom
1987-5-13
9
Contra Costa
Calif. State University Hayward's Contra Costa Campus. 3100 Oak Park Blvd. Pleasant Hill.
30
Comment
JEPS41884
Grindelia hirsutula
W. L. Jepson
1895-9-14
Contra Costa
Walnut Creek
Comment
UC2013035
Grindelia hirsutula
Barbara Ertter with Travis Columbus
1990-6-10
9099
Contra Costa
NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; trail heading down ridge on N side of Briones Peak, at junction with Spengler Trail.
Comment
RSA455866
Gutierrezia californica
E. E. Stanford
1930-9-20
2101
Contra Costa
Near Walnut Creek
Comment
UC566690
Helenium puberulum
H. L. Mason
1924-11-23
1162
Contra Costa
Las Trampas Creek
Comment
CAS-BOT-BC305323
Helianthella castanea
D. E. Breedlove
1970-4-18
17440
Contra Costa
At the north edge of Lafayette above Laurel Drive
243
Comment
UC2013032
Helianthella castanea
Barbara Ertter with Travis Columbus
1990-6-10
9107
Contra Costa
NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; E-facing steep hillside above junction of Spengler and Blue Oaks trails.
Comment
JEPS35456
Helianthus annuus
W. L. Jepson
1895-9-14
Contra Costa
Walnut Creek
Comment
UCR260817
Helianthus annuus
D. Finley
1998-4-25
1- 07
Contra Costa
San Francisco Bay Region, Lafayette, 2.5 miles at the crow flies west of highway 24 east in a residential area, on Lafayette Ridge behind 1212 Monticello Road
229
Comment
JEPS111842
Heliotropium curassavicum
D. G. Kelch
2004-7-9
04 .307
Contra Costa
Muir grave Alhambra Creek, Martinez, Near Muir gravesite
60
Comment
UCD151071
Heliotropium curassavicum var. oculatum
James A. Neilson Jr.
1972-11-2
3610
Contra Costa
Contra Costa County. Walnut Creek drainage. (Elevation estimated using Google Earth by label maker.)
1
Comment
CHSC75063
Helminthotheca echioides
Roger Thom
1987-5-28
26
Contra Costa
3300 block of Johnson Rd. 0.3 mi from intersection with Reliez Valley Rd. Lafayette. Edge of pasture.
137
Comment
CAS-BOT-BC314857
Hemizonia congesta subsp. luzulifolia
R. F. Hoover
1937-9-2
s.n.
Contra Costa
Walnut Creek
Comment
CAS-BOT-BC314858
Hemizonia congesta subsp. luzulifolia
R. F. Hoover
1937-9-2
2709
Contra Costa
Walnut Creek
Comment
JEPS12597
Hemizonia congesta subsp. luzulifolia
R. F. Hoover
1937-9-2
2709
Contra Costa
Walnut Creek
Comment
UC570418
Hemizonia congesta subsp. luzulifolia
Chas. M. Belshaw
1936-10-26
2722
Contra Costa
fallow fields near Walnut Creek; Coast Ranges
Comment
UC762663
Hemizonia congesta subsp. luzulifolia
R. F. Hoover
1937-9-2
2709
Contra Costa
Walnut Creek
Comment
UC990637
Hemizonia congesta subsp. luzulifolia
James I. McMurphy
1909-9-25
Contra Costa
Walnut Creek
Comment
SEINET5782065
Hemizonia fitchii
L. S. Rose
1941-10-13
41464
Contra Costa
1 mi E of Walnut Creek
Comment
SEINET7883352
Hemizonia heermannii
L. S. Rose
1941-1
41465
Contra Costa
1 mi E of Walnut Creek
Comment
SBBG44745
Heracleum maximum
Leota Davidson
1966-5-2
417
Contra Costa
Hwy 24 near Walnut Crk turn-off
Comment
UCD84891
Holcus mollis
David L. Hanson
1978-3-7
s.n.
Contra Costa
Contra Costa County.
Comment
CDA7978
Holocarpha heermannii
A. G. Murdock, D. G. Kelch
2002-7-2
67
Contra Costa
Carquinez Strait Region; Mt. Wanda - Martinez. Crest of Mt. Wanda on north side of main fire road.
Comment
JEPS111636
Holocarpha heermannii
Andrew G. Murdock
2002-7-20
67
Contra Costa
Mount Wanda - Martinez; ; ; crest of Mount Wanda on N side of fire road in large meadow
85
Comment
JEPS12900
Holocarpha heermannii
L. S. Rose
1941-10-13
41465
Contra Costa
1 mi e of Walnut Creek
50
Comment
JEPS13469
Holocarpha heermannii
W. L. Jepson
1895-9-14
Contra Costa
Walnut Creek
Comment
SEINET5782138
Holocarpha heermannii
L. S. Rose
1941-10-13
41465
Contra Costa
1 mi E of Walnut Creek
Comment
UC1332423
Holocarpha heermannii
P. B. Dickey
1932-9-14
164
Contra Costa
Walnut Creek
Comment
UC897717
Holocarpha heermannii
Lewis S. Rose
1941-10-13
41465
Contra Costa
1 mi e Walnut Creek
45
Comment
UCD36924
Hordeum brachyantherum
Beecher Crampton
1956-5-14
3413
Contra Costa
1 mile east of Pacheco, Buchanan Field.
Comment
UCD85488
Hordeum brachyantherum
Beecher Crampton
1956-5-14
3413
Contra Costa
1 mile east of Pacheco, Buchanan Field.
Comment
UC55038
Hordeum marinum subsp. gussoneanum
Jos. Burtt Davy
1900-6-7
6657
Contra Costa
near Pacheco
Comment
UCD85827
Hordeum marinum subsp. gussoneanum
Beecher Crampton
1956-5-14
3411
Contra Costa
1 mile east of Pacheco, Buchanan Field.
Comment
A422689
Juglans californica
L. Abrams
1916-7-29
6306
Unknown
Walnut Creek
Comment
GH422675
Juglans californica
A. Eastwood
1894-5-4
Unknown
Walnut Cr.
Comment
JEPS21838
Juglans californica var. hindsii
Bryce G. Decker
1958-5-17
88
Contra Costa
bank of slough 1 mi s Four Corners (se of Concord); former course of Walnut Creek
Comment
JEPS46455
Juglans californica var. hindsii
W. L. Jepson
1908-8-16
3087
Contra Costa
Walnut Creek
Comment
JEPS58698
Juglans californica var. hindsii
W. L. Jepson
1908-8-16
3087
Contra Costa
Walnut Creek
Comment
UC1197942
Juglans californica var. hindsii
Joseph P. Tracy
1934-4-30
13186
Contra Costa
near Lafayette; North Coast Ranges
152
Comment
A422716
Juglans hindsii
W. L. Jepson
1908-8-16
3087
Unknown
Walnut Creek
Comment
A422725
Juglans hindsii
W. L. Jepson
1908-8-16
3087
Unknown
Walnut Creek
Comment
CAS-BOT-BC102308
Juglans hindsii
L. R. Abrams
1916-7-29
6306
Contra Costa
Walnut Creek
Comment
POM166816
Juglans hindsii
L. R. Abrams
1916-7-29
s.n.
Contra Costa
Walnut Creek
Comment
UC691987
Juncus ambiguus
Mary L. Bowerman
1933-4-22
1885
Contra Costa
nw end of Shell Ridge (s of highway (Heather Farm), Mount Diablo); Mount Diablo, Shell Ridge
Comment
JEPS100049
Juncus bufonius
A. Langston
2003-6-6
AL 39
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC692075
Juncus mexicanus
Mary L. Bowerman
1933-4-22
1884
Contra Costa
nw end Shell Ridge (s of the highway (Heather Farm)); Mount Diablo
Comment
JEPS100048
Juncus patens
A. Langston
2003-6-6
AL 38
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
JEPS112433
Juncus xiphioides
D. G. Kelch
2004-7-9
04 .307
Contra Costa
Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite
60
Comment
UC2029085
Juncus xiphioides
Barbara Ertter
2000-7-16
17407
Contra Costa
Pine Creek on WNW base of Mount Diablo
Comment
UC2029169
Juncus xiphioides
Barbara Ertter
2000-7-16
17407
Contra Costa
Pine Creek on WNW base of Mount Diablo
Comment
GH97688
Krynitzkia trachycarpa
W. H. Brewer
1862-4-30
1007
Unknown
In Walnut Creek, in damp places
Comment
UC90073
Lasthenia conjugens
T. S. Brandegee
Jun 1884
Contra Costa
Walnut Creek
Comment
UC1598597
Lasthenia glaberrima
A. D. E. Elmer
1903-5-1
4321
Contra Costa
Walnut Creek
Comment
CAS-BOT-BC213349
Lathyrus jepsonii subsp. californicus
Volney Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Valley
Comment
CAS-BOT-BC213350
Lathyrus jepsonii subsp. californicus
Volney Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Valley
Comment
CAS-BOT-BC213351
Lathyrus jepsonii subsp. californicus
Volney Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Valley
Comment
UC15383
Lathyrus jepsonii var. californicus
W. H. Brewer
1862-4-30
1018
Contra Costa
Camp 69 Walnut Creek
Comment
JEPS99995
Lathyrus latifolius
G. Smick
2003-5-30
GAS 199
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
JEPS100082
Lepidium latifolium
A. Langston
2003-6-6
AL 34
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC402590
Lepidium nitidum
I. J. Condit
1913-3-19
Contra Costa
Walnut Creek
Comment
RSA108330
Leymus triticoides
Frank W. Gould
1941-5-16
1298
Contra Costa
In roadside ditch, 1/2 mile east of Lafayette on C.S. Highway 24.
Comment Read comments Nov 1 2011
UC53466
Leymus triticoides
Jos. Burtt Davy
1900-6-7
6658
Contra Costa
near Pacheco
Comment
UCD87711
Leymus triticoides
Nougart
1916-12-1
s.n.
Contra Costa
Walnut Creek.
Comment
UC1057450
Limnanthes douglasii subsp. nivea
G. Thomas Robbins
1937-4-25
150
Contra Costa
near Walnut Creek
Comment
UC17899
Limnanthes douglasii subsp. nivea
W. H. Brewer
1862-4-30
1009
Contra Costa
Camp 69 Walnut Creek
Comment
CAS-BOT-BC430613
Lithophragma affine
Lewis S. Rose
1933-4-17
33099
Contra Costa
Walnut Creek
Comment
GH363729
Lithophragma affine
L. S. Rose
1933-4-17
33099
Unknown
Walnut Creek
Comment
UC518019
Lithophragma affine
Lewis S. Rose
1933-4-17
33099
Contra Costa
Walnut Creek
Comment
CHSC75233
Lolium perenne
Roger Thom
1987-5-13
7
Contra Costa
Contra Costa Campus of Hayward Calif. State University. 3100 Oak Park Blvd. Pleasant Hill. Field.
30
Comment
GH360206
Lolium temulentum
W. H. Brewer
1000
Unknown
Walnut Creek
Comment Read comments Dec 4 2015
CHSC75087
Lotus corniculatus
Roger Thom
1987-6-1
27
Contra Costa
California State University Hayward's Contra Costa Campus. 3100 Oak Park Blvd. Pleasant Hill.
30
Comment
UC178931
Lupinus
Katharine Brandegee
Contra Costa
Walnut Creek
Comment
GH366675
Lupinus albifrons
W. H. Brewer
May 1, 1860-62
1038
Unknown
S. Walnut Creek
Comment Read comments Dec 4 2015
UC15783
Lupinus albifrons
unknown
1038
Contra Costa
Walnut Creek
Comment
UC15822
Lupinus albifrons
W. H. Brewer
1862-5-1
1038
Contra Costa
s Camp 69; s of Camp 69
Comment
UC1129392
Lupinus bicolor
R. W. Lundh
1933-3-25
220
Contra Costa
1 mi w and 1/2 mi n Lafayette Acalanes Grant; Concord Quad.
213
Comment
UC2029110
Lupinus formosus var. formosus
Barbara Ertter with Travis Columbus
1990-6-10
9116
Contra Costa
NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill, SE of Alhambra Valley staging area
Comment
UC15915
Lupinus luteolus
Mrs. T. J. Maynard
1897-7-28
Contra Costa
Walnut Creek
Comment
CHSC75089
Lupinus polycarpus
Roger Thomas
1987-4-21
5
Contra Costa
3300 block of Johnson Rd. Lafayette.
152
Comment
UCD150881
Lythrum hyssopifolia
James A. Neilson Jr.
1972-11-2
3617
Contra Costa
Walnut Creek drainage. Elevation estimated using Google Earth by label maker.
1
Comment
UC5897
Maclura pomifera
W. G. Klee
June 1880
Contra Costa
road to Walnut Creek
Comment
SDSU7507
Malacothamnus fremontii
D. F. Howe
1968-5-20
4515
Contra Costa
Comment
UCD150879
Malva nicaeensis
James A. Neilson Jr.
1972-11-2
3619
Contra Costa
Walnut Creek drainage. Elevation estimated in Google Earth by label maker.
1
Comment
CDA35747
Malvella leprosa
D. G. Kelch, Andrew G. Murdock
2004-7-9
4 .306
Contra Costa
Carquinez Strait; Alhambra Creek, Martinez, near Muir gravesite, Arroyo del Hambre.
Comment
JEPS111545
Malvella leprosa
D. G. Kelch
2004-7-9
04 .306
Contra Costa
Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite
60
Comment
UCD150880
Malvella leprosa
James A. Neilson Jr.
1972-11-2
3618
Contra Costa
Walnut Creek drainage. Elevation estimated using Google Earth by label maker.
1
Comment
CAS-BOT-BC281431
Melica imperfecta
D. E. Breedlove
1970-4-18
17433
Contra Costa
At the N edge of Lafayette above Laurel Drive
243
Comment
UC53660
Melica torreyana
Jos. Burtt Davy
1899-4-19
7862
Contra Costa
Las Trampas Creek
Comment
CDA1109
Melissa officinalis
D. G. Kelch
2005-7-14
5 .462
Contra Costa
Carquinez Strait Region; Arroyo del Hambre; Franklin Creek near Glen Frazier.
Comment
UCD150883
Mentha X piperita
James A. Neilson Jr.
1972-11-9
s.n.
Contra Costa
Walnut Creek drainage. Elevation estimated using Google Earth by label maker.
1
Comment
GH21070
Micropus amphibolus
W. H. Brewer
1860-1-1
1015
Unknown
Walnut Creek
Comment Read comments Dec 4 2015
GH21071
Micropus amphibolus
W. H. Brewer
1860-1-1
1015
Unknown
Walnut Creek
Comment Read comments Dec 4 2015
UC35594
Micropus californicus var. californicus
Brewer
1862-4-30
1015
Contra Costa
Walnut Creek, camp 69
Comment
CAS-BOT-BC348650
Micropus californicus var. subvestitus
V. Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Val.
Comment
SJSU10601
Microseris douglasii
C. O. Dudley
1966-5-8
Contra Costa
Briones Hills, Reliez Valley, Lafayette
152
Comment
UC692298
Minuartia californica
Mary L. Bowerman
1935-3-16
2730
Contra Costa
Shell Ridge Mount Diablo (just e of the hwy, (opposite Heather Farm))
Comment
UC8130
Minuartia douglasii
W. H. Brewer
1862-5-5
1048
Contra Costa
near Walnut Creek (sw of Camp 69)
Comment
CHSC75113
Montia perfoliata
Roger Thom
1987-4-17
1
Contra Costa
3300 block Johnson Rd. in Lafayette.
152
Comment
CAS-BOT-BC259906
Nassella lepida
D. E. Breedlove
1970-4-18
17447
Contra Costa
At the N edge of Lafayette above Laurel Drive
243
Comment
RSA217245
Nassella lepida
D. E. Breedlove
1970-4-18
17437
Contra Costa
At the north edge of Lafayette above Laurel Drive
244
Comment
JEPS87936
Navarretia squarrosa
Barbara Ertter with Laura Fujii
1990-7-21
9398
Contra Costa
w of Pleasant Hill (near junction of Briones Crest and Spengler trails); Briones Regional Park, Briones Hills
396
Comment
UC1607552
Navarretia squarrosa
Barbara Ertter with Laura Fujii
1990-7-21
9398
Contra Costa
w of Pleasant Hill (near junction of Briones Crest and Spengler trails); Briones Regional Park, Briones Hills
396
Comment
UC23887
Navarretia viscidula
Edw. L. Greene
1892-6-19
Contra Costa
Walnut Creek
Comment
JEPS99980
Oemleria cerasiformis
G. Smick
2003-2-20
GAS 46
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC1128080
Oemleria cerasiformis
R. W. Lundh
1933-4-2
226
Contra Costa
San Francisco Quad.
Comment
JEPS100065
Olea europaea
A. Langston
2003-7-24
AL 70
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC27898
Orobanche uniflora subsp. occidentalis
J. Burtt Davy
1895-4-13
1004
Contra Costa
Lafayette.
Comment
JEPS121587
Orobanche vallicola
Sam Young
2013-8-5
s. n.
Contra Costa
Briones Road, ~ 50 ft SW of intersection with Alhambra Valley Road, Martinez.
Comment
JEPS82723
Orobanche vallicola
Wayne Roderick
1981-10-2
Contra Costa
s. entrance area Briones Regional Park
152
Comment
UC1618306
Osmorhiza berteroi
Barbara Ertter with Travis Columbus
1990-6-10
9108
Contra Costa
near stream crossing on Spengler Creek ne Briones Peak (ne corner of park, w of Pleasant Hill); Briones Regional Park, Briones Hills
182
Comment
CHSC75108
Oxalis pes-caprae
Roger Thom
1987-4-21
4
Contra Costa
3300 block of Johnson Rd. Lafayette. At edge of field.
152
Comment
CDA33874
Panicum capillare
Diveney, Denijs
2008-9-17
PDR# 1454350
Contra Costa
Concord; Contra Costa Canal near Grayson Creek
0
Comment
SJSU6411
Papaver heterophyllum
G. C. Dudley
1966-5-1
112
Contra Costa
Reliez Valley, Briones Hills, N of Lafayette
Comment
CAS-BOT-BC71614
Pentagramma triangularis
D. E. Breedlove
1970-4-18
17426
Contra Costa
at the north edge of Lafayette above Laurel Drive
243
Comment
UC2029184
Pentagramma triangularis
Barbara Ertter
1990-5-19
8999
Contra Costa
Lafayette Ridge of Briones Regional Park N of Lafayette.
Comment
JEPS100133
Perideridia kelloggii
A. Langston
2003-7-9
AL 63
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC1078912
Phoradendron macrophyllum
Job Kuijt
1958-1-12
1442
Contra Costa
near Walnut Creek (Saranap); Saranap
Comment
UC1078913
Phoradendron macrophyllum
Job Kuijt
1958-1-12
1443
Contra Costa
near Walnut Creek (Saranap); Saranap
Comment
CAS-BOT-BC141121
Phoradendron serotinum subsp. macrophyllum
Lewis S. Rose
1930-12-10
s.n.
Contra Costa
Walnut Creek
Comment
CAS-BOT-BC141122
Phoradendron serotinum subsp. macrophyllum
L. R. Abrams
1916-7-29
6307
Contra Costa
Walnut Creek
Comment
UC12452
Physocarpus capitatus
J. Burtt Davy
1895-4-4
1000
Contra Costa
near Lafayette
Comment
UC907503
Pinus pinea
Walter S. Malloch
1950-6-21
Contra Costa
Lakewood subdivision Walnut Creek
Comment
UC24549
Plagiobothrys bracteatus
W. H. Brewer
1862-4-30
1007
Contra Costa
Camp 69 Walnut Creek
Comment
UC24586
Plagiobothrys trachycarpus
W. H. Brewer
1862-4-30
1007
Contra Costa
Walnut Creek; ; Walnut Creek, Camp 69
Comment
JEPS112002
Platanus racemosa
D. G. Kelch
2003-8-13
03 .122
Contra Costa
Arroyo del Hambre Along Alhambra Creek E of Mt Wanda. w/ AGM
74
Comment
JEPS112003
Platanus racemosa
D. G. Kelch
2004-4-25
04 .106
Contra Costa
Arroyo del Hambre Along Alhambra Creek in Martinez
74
Comment
JEPS40297
Platanus racemosa
F. W. Bancroft
Oct. 1894
Contra Costa
Walnut Creek
Comment
UC1126493
Platystemon californicus
R. C. Wilson
1935-3-26
143
Contra Costa
2 mi n Walnut Creek; Concord Quad.
Comment
UC566962
Platystemon californicus
R. C. Wilson
1935-3-26
143
Contra Costa
2 mi n Walnut Creek; Concord Quad.
Comment
CHSC24920
Plectritis ciliosa
M. A. Callahan
1976-4-14
13
Contra Costa
On west slope ca. 135 m. e of house at 1976 Mohawk Dr. Pleasant Hill.
140
Comment
GH360611
Pleuropogon californicus
W. H. Brewer
1860-1-1
1043
Unknown
Walnut Creek
Comment
UC39496
Pleuropogon californicus
W. H. Brewer
1862-5-1
1043
Contra Costa
Walnut Creek
Comment
UCD90183
Pleuropogon californicus
R. Tofsrud
1946-4-1
s.n.
Contra Costa
1/2 mile south of Pacheco
Comment
CAS-BOT-BC260942
Pleuropogon californicus var. californicus
W. H. Brewer
1862-5-1
1043
Contra Costa
Walnut Creek
Comment
CAS-BOT-BC260943
Pleuropogon californicus var. californicus
W. H. Brewer
1862-5-1
1043
Contra Costa
Walnut Creek
Comment
UCD90185
Pleuropogon californicus var. californicus
R. Tofsrud
1946-4-1
s.n.
Contra Costa
1/2 mile south of Pacheco.
Comment
GH360927
Poa secunda
W. H. Brewer
1024
Unknown
Walnut Creek
Comment
GH360967
Poa secunda
W. H. Brewer
1860-1-1
1001
Unknown
Walnut Creek
Comment
CAS-BOT-BC236395
Poa secunda subsp. secunda
D. E. Breedlove
1970-4-18
17551
Contra Costa
At the N edge of Lafayette above Laurel Drive
243
Comment
UC465853
Polygonum aviculare subsp. aviculare
Tracy J. Storer
1912-7-12
Contra Costa
2 mi SW of Walnut Creek
60
Comment
JEPS100034
Polypogon monspeliensis
A. Langston
2003-6-6
AL 36
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UCD91279
Polypogon monspeliensis
Beecher Crampton
1956-5-14
3412
Contra Costa
1 mile east of Pacheco, Buchanan Field.
Comment
A382280
Populus fremontii
W. L. Jepson
1908-8-16
3085
Unknown
Walnut Creek
Comment
JEPS100004
Populus fremontii
A. Langston
2003-9-16
AL 91
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
JEPS64540
Populus fremontii subsp. fremontii
W. L. Jepson
1908-8-16
3085
Contra Costa
Walnut Creek
22
Comment
UC403974
Populus fremontii subsp. fremontii
W. L. Jepson
1907-4
Contra Costa
near Walnut Creek (San Ramon Valley); San Ramon Valley
Comment
CAS-BOT-BC148643
Ptelea crenulata
V. Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Val.
Comment
CAS-BOT-BC148644
Ptelea crenulata
V. Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Valley
Comment
CAS-BOT-BC148647
Ptelea crenulata
Volney Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Val.
Comment
UC2029093
Ptelea crenulata
Barbara Ertter with Travis Columbus
1990-6-10
9110
Contra Costa
NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill, on Spengler Trail NE of Briones Peak.
Comment
UC1198069
Pterostegia drymarioides
Joseph P. Tracy
1934-4-30
13191
Contra Costa
near Lafayette
152
Comment
UCSC009992
Quercus
Al Keuter
2014-5-23
00 097 B
Contra Costa
Along Reliez Valley Road, Lafayette
72
Comment
UCSC010010
Quercus
Al Keuter
2014-5-23
00 097 A
Contra Costa
Along Reliez Valley Road, Lafayette
72
Comment
CHSC24131
Quercus agrifolia
M. A. Callahan
1976-4-11
1
Contra Costa
45 ft. nnw of house at 1976 Mohawk Dr., Pleasant Hill. Growing on steep hillside; w side Oak Wd.
121
Comment
CAS-BOT-BC86642
Quercus douglasii
Brandegee
s.n.
Contra Costa
unspecified
Comment
UC2042780
Quercus kelloggii
Barbara Ertter with Travis Columbus
1990-6-10
9115
Contra Costa
NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill, SE Alhambra Valley staging area
Comment
A343283
Quercus lobata
A. Eastwood
1894-05-01 - 1894-06-01
Unknown
Walnut Cr.
Comment
A343284
Quercus lobata
A. Eastwood
1894-05-01 - 1894-06-01
Unknown
Walnut Cr
Comment
CAS-BOT-BC362446
Rafinesquia californica
Volney Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Val.
Comment
CHSC24922
Ranunculus californicus
M. A. Callahan
1976-4-11
8
Contra Costa
Ca. 70 m e of house at 1976 Mohawk Dr. Pleasant Hill, at base of canyon.
129
Comment
UC1300986
Ranunculus californicus
Helen K. Sharsmith
1962-3-25
4912
Contra Costa
hills between Happy Valley and Alhambra Valley; San Francisco Bay Region
304
Comment
JEPS99975
Ranunculus muricatus
G. Smick
2003-4-29
GAS 147
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC61031
Ranunculus orthorhynchus var. bloomeri
N. L. Gardner
1904-2-17
Contra Costa
Happy Valley
Comment
JEPS100009
Raphanus raphanistrum
G. Smick
2003-4-8
GAS 132
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
CHSC75075
Raphanus sativus
Roger Thom
1987-5-26
19
Contra Costa
2800 block of Buena Vista Ave. Walnut Creek.
30
Comment
CAS-BOT-BC59895
Rhamnus ilicifolia
Peter Rubtzoff
1951-10-7
816
Contra Costa
Ca. 3 mi. ne. of Moraga, near Trampas and Grizzly Creeks.
Comment
JEPS98405
Rhaponticum repens
Bob Case
2001-10-2
Contra Costa
East Bay Municipal Utilities District right-of-way on West Hookston Road Pleasant Hill, SE
Comment
UC11524
Ribes divaricatum var. pubiflorum
J. Burtt Davy
1895-4-13
997
Contra Costa
near Lafayette
Comment
UC11525
Ribes divaricatum var. pubiflorum
J. Burtt Davy
1895-4-13
997
Contra Costa
Lafayette
Comment
GH346035
Rosa gymnocarpa
H. L. Mason
1924-11-23
1161
Unknown
Cashion Creek, Las Trampas Ridge
Comment
UC555497
Rosa gymnocarpa
Herbert L. Mason
1924-11-23
1172
Contra Costa
Cashion Creek Las Trampas Ridge
Comment
UC555647
Rosa gymnocarpa
Herbert L. Mason
1924-11-23
1161
Contra Costa
Cashion Creek Las Trampas Ridge
Comment
UC12995
Rubus ursinus
W. H. Brewer
1862-4-30
1013
Contra Costa
Camp 69 Walnut Creek (Walnut Creek)
Comment
SJSU5703
Rupertia physodes
C. O. Dudley
1966-5-1
113 a
Contra Costa
Reliez Valley, Briones Hills, N of Lafayette
152
Comment
UC1197438
Rupertia physodes
Joseph P. Tracy
1934-4-30
13195
Contra Costa
near Lafayette
152
Comment
A383237
Salix laevigata
C. S. Sargent
1894-3-8
Unknown
Walnut Creek
Comment
A383238
Salix laevigata
C. S. Sargent
1894-3-8
Unknown
Walnut Creek
Comment
A383239
Salix laevigata
C. S. Sargent
1894-3-8
Unknown
Walnut Creek
Comment
UC437379
Salix laevigata
J. Burtt Davy
1895-4-13
1011
Contra Costa
near Lafayette
Comment
UC437380
Salix laevigata
J. Burtt Davy
1895-4-13
1005
Contra Costa
near Lafayette
Comment
A383606
Salix lasiolepis
C. S. Sargent
1894-3-8
Unknown
Walnut Creek
Comment
UC1196658
Salix lasiolepis
Joseph P. Tracy
1930-11-27
9260
Contra Costa
near Lafayette
304
Comment
CAS-BOT-BC233289
Salvia mellifera
D. E. Breedlove
1970-4-18
17448
Contra Costa
At the north edge of Lafayette above Laurel Drive
243
Comment
JEPS100122
Sambucus mexicana
G. Smick
2003-4-29
GAS 150
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
JEPS12727
Sambucus mexicana
W. L. Jepson
1908-8-16
3086
Contra Costa
Walnut Creek
Comment
UC441298
Sambucus mexicana
Tracy J. Storer
1912-7-16
Contra Costa
2 mi sw Walnut Creek
Comment
UCD150884
Sambucus nigra subsp. caerulea
James A. Neilson Jr.
1972-11-9
s.n.
Contra Costa
Walnut Creek drainage. Elevation estimated using Google Earth by label maker.
1
Comment
UC691975
Scirpus americanus
Mary L. Bowerman
1933-4-22
1882
Contra Costa
just s of highway Heather Farm (Mount Diablo); , nw end Shell Ridge
Comment
CDA39143
Scirpus microcarpus
D. G. Kelch
2004-7-9
4 .308
Contra Costa
Carquinez Strait; Martinez; Alhambra Creek, near Muir gravesite. Arroyo del Hambre.
Comment
JEPS111898
Scirpus microcarpus
D. G. Kelch
2004-7-9
04 .308
Contra Costa
Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite.
60
Comment
UC1713668
Scutellaria tuberosa
unknown
1027
Contra Costa
Walnut Creek
Comment
UC25824
Scutellaria tuberosa
W. H. Brewer
1862-5-1
1037
Contra Costa
s of Camp 69
Comment
UC25837
Scutellaria tuberosa
unknown
1037
Contra Costa
Walnut Creek
Comment
UC1046442
Sidalcea malviflora subsp. laciniata
Alex D. Hawkes and R. Bacigalupi
1951-4-21
4771
Contra Costa
meadow near Walnut Creek; Meadow near Walnut Creek
Comment
UC18898
Sidalcea malviflora subsp. laciniata
W. H. Brewer
1862-4-30
1002
Contra Costa
Camp 69 Walnut Creek, Camp 69
Comment
UC18907
Sidalcea malviflora subsp. laciniata
State Survey
1862-4-30
1002
Contra Costa
Walnut Creek
Comment
UC692614
Sidalcea malviflora subsp. laciniata
Mary L. Bowerman
1933-4-22
1880
Contra Costa
opposite Heather Farm (near the sulphur spring, Shell Ridge where the highway crosses; meadow); Mount Diablo, Shell ridge, oppos Heather Farm
Comment
JEPS100077
Sisymbrium officinale
A. Langston
2003-6-19
AL 49
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
JEPS100079
Sisymbrium officinale
A. Langston
2003-6-19
AL 48
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC10827
Sisymbrium officinale
unknown
1862-5-5
Contra Costa
Walnut Creek
Comment
CHSC24841
Sisyrinchium bellum
M. A. Callahan
1976-4-15
17
Contra Costa
Top of ridge ca. 145m e of house at 1976 Mohawk Dr. Pleasant Hill.
152
Comment
JEPS100043
Sisyrinchium bellum
G. Smick
2003-3-4
GAS 61
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
CHSC24836
Solanum umbelliferum
M. A. Callahan
1976-4-14
16
Contra Costa
40 m ene of house at 1976 Mohawk Dr. Pleasant Hill.
106
Comment
UC2042781
Solanum umbelliferum
Barbara Ertter with Travis Columbus
1990-6-10
9109
Contra Costa
NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill, on Spengler Trail NE of Briones Peak
Comment
UC536676
Solanum umbelliferum
Herbert L. Mason
1935-8-23
Contra Costa
Cashion Canyon, Saint Mary's College Cashion Canyon; , Saint Mary's College
Comment
CHSC75065
Sonchus oleraceus
Roger Thom
1987-5-26
22
Contra Costa
1100 block of Hillside Ave. Walnut Creek. Roadside.
36
Comment
CHSC75343
Sporobolus airoides
Roger Thom
1987-5-26
20
Contra Costa
2800 block of Buena Vista Ave. Walnut Creek. In waste lot.
30
Comment
CDA33902
Stachys pycnantha
Swan/Fonseca
2008-9-11
PDR# 1454523
Contra Costa
Concord; Pine Creek
0
Comment
UC571570
Stephanomeria virgata subsp. pleurocarpa
H. K. Sharsmith
1933-9-24
Contra Costa
highway w Walnut Creek
Comment
CAS-BOT-BC422908
Stylomecon heterophylla
D. E. Breedlove
1970-4-18
17430
Contra Costa
At the north edge of Lafayette above Laurel Drive.
243
Comment
CAS-BOT-BC422916
Stylomecon heterophylla
Volney Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Val.
Comment
CAS-BOT-BC269562
Symphoricarpos albus var. laevigatus
V. Rattan
1887-5-22
s.n.
Contra Costa
Alhambra Val.
Comment
UC416573
Symphoricarpos albus var. laevigatus
Tracy I. Storer
1912-7-13
Contra Costa
2 mi sw Walnut Creek
Comment
CDA37132
Tamarix parviflora
Wil Schaub
2012-4-19
PDR# 1641194
Contra Costa
Lafayette; 3697 Happy Valley Road.
0
Comment
UC19168
Tamarix parviflora
J. Burtt Davy
1895-4-13
1013
Contra Costa
Lafayette
Comment
CHSC75158
Tanacetum parthenium
Roger Thom
1987-5-24
14
Contra Costa
3354 Johnson Rd., Lafayette.
167
Comment
UC1301106
Taraxia ovata
Helen K. Sharsmith
1962-4-18
4957
Contra Costa
Reliez Valley Rd. San Francisco Bay Region
152
Comment
UC1618308
Tauschia hartwegii
Barbara Ertter with Travis Columbus
1990-6-10
9106
Contra Costa
ne corner Briones Regional Park (e-facing steep hillside above junction of Spengler and Blue Oak trails, Briones Hills, w of Pleasant Hill); ne corner of Briones Regional Park, Briones Hills
274
Comment
CAS-BOT-BC172933
Toxicodendron diversilobum
D. E. Breedlove
1970-4-18
17442
Contra Costa
At the north edge of Lafayette above Laurel Drive
243
Comment
CHSC75068
Tragopogon porrifolius
Roger Thom
1987-5-18
11
Contra Costa
0.15 mi. from west intersection with Stanley Blvd. on Camino Diablo. Lafayette. Shoulder of road.
30
Comment
JEPS63121
Trichostema lanceolatum
W. L. Jepson
1895-9-14
14880
Contra Costa
Lafayette
Comment
UC147749
Trifolium albopurpureum var. dichotomum
Ivar Tidestrom
1895-4-13
Contra Costa
near Lafayette
Comment
UC630753
Trifolium albopurpureum var. dichotomum
Ivar Tidestrom
1895-4-13
Contra Costa
near Lafayette
Comment
UC16605
Trifolium albopurpureum var. olivaceum
W. H. Brewer
1862-4-30
1019
Contra Costa
Camp 69 Walnut Creek
Comment
UC146057
Trifolium bifidum var. decipiens
Ivar Tidestrom
1895-4-13
Contra Costa
near Lafayette
Comment
CHSC24925
Trifolium ciliolatum
M. A Callahan
1976-4-15
20
Contra Costa
Ca. 15 mi ne of house at 1976 Mohawk Dr. Pleasant Hill.
121
Comment
UC16457
Trifolium ciliolatum
Ivar Tidestrom
1895-4-13
Contra Costa
near Lafayette
Comment
UC165565
Trifolium depauperatum var. amplectens
Ivar Tidestrom
1895-4-13
Contra Costa
near Lafayette
Comment
JEPS65752
Trifolium depauperatum var. truncatum
Ivar Tiderstrom
1895-4-13
Contra Costa
Lafayette
Comment
UC147173
Trifolium depauperatum var. truncatum
Ivar Tidestrom
1895-4-13
Contra Costa
near Lafayette
Comment
UC692647
Trifolium depauperatum var. truncatum
Mary L. Bowerman
1932-3-23
1125
Contra Costa
betw Monument and Concord (Oak Grove School junction); Mount Diablo
Comment
UC16512
Trifolium fucatum
W. H. Brewer
1862-5-1
1040
Contra Costa
s Camp 69; Walnut Creek
Comment
UC16513
Trifolium fucatum
W. H. Brewer
1862-5-5
1045
Contra Costa
Camp 69 Walnut Creek
Comment
UC16534
Trifolium fucatum
W. H. Brewer
1862-4-30
1006
Contra Costa
Camp 69 Walnut Creek
Comment
UC33446
Trifolium fucatum
Jos. Burtt Davy
1895-4-13
999
Contra Costa
Lafayette
Comment
UC692316
Trifolium fucatum
Mary L. Bowerman
1932-3-23
1124
Contra Costa
betw Monument and Concord (Oak Grove School junction); Mount Diablo
Comment
UC16559
Trifolium gracilentum
W. H. Brewer
1862-4-30
1010
Contra Costa
Camp 69 Walnut Creek
Comment
UC631032
Trifolium gracilentum
Ivar Tidestrom
1895-4-13
Contra Costa
near Lafayette
Comment
UC16618
Trifolium microcephalum
W. H. Brewer
1862-4-30
1020
Contra Costa
Camp 69 Walnut Creek
Comment
UC16753
Trifolium obtusiflorum
W. H. Brewer
1862-4-30
1005
Contra Costa
Camp 69 Walnut Creek
Comment
UC165547
Trifolium oliganthum
Ivar Tidestrom
1895-4-13
Contra Costa
near Lafayette
Comment
UC165546
Trifolium variegatum var. melananthum
Ivar Tidestrom
1895-4-13
Contra Costa
near Lafayette
Comment
UC692680
Trifolium variegatum var. melananthum
Mary L. Bowerman
1932-3-23
1126
Contra Costa
betw Monument and Concord (Oak Grove School junction); Mount Diablo
Comment
UC16750
Trifolium willdenovii
W. H. Brewer
1862-4-30
1021
Contra Costa
Camp 69 Walnut Creek
Comment
JEPS15190
Triphysaria eriantha subsp. eriantha
R. C. Wilson
1935-3-26
144
Contra Costa
2 mi n Walnut Creek; Concord Quad.
Comment
UC1046443
Triphysaria eriantha subsp. eriantha
Alex D. Hawkes and R. Bacigalupi
1951-4-21
4772
Contra Costa
meadow near Walnut Creek; meadow near Walnut Creek
Comment
JEPS100055
Umbellularia californica
G. Smick
2003-2-20
GAS 47
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
UC1196278
Umbellularia californica
Joseph P. Tracy
1930-11-27
9262
Contra Costa
near Lafayatte
152
Comment
UC2029170
Verbena lasiostachys var. scabrida
Barbara Ertter
2000-7-16
17409
Contra Costa
Pine Creek on WNW base of Mount Diablo.
Comment
UC2029171
Verbena lasiostachys var. scabrida
Barbara Ertter
2000-7-16
17409
Contra Costa
Pine Creek on WNW base of Mount Diablo.
Comment
UC27730
Veronica peregrina subsp. xalapensis
W. H. Brewer
1862-4-30
1026
Contra Costa
Walnut Creek, Camp 69 Walnut Creek; , Camp 69
Comment
CHSC75276
Vicia sativa
Roger Thom
1987-4-21
2
Contra Costa
3354 Johnson Rd. Lafayette.
Comment
UC1300884
Vicia sativa subsp. nigra
Helen K. Sharsmith
1962-4-18
4958
Contra Costa
Reliez Valley Road; San Francisco Bay Region
152
Comment
JEPS100123
Vinca major
G. Smick
2003-3-27
GAS 92
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
CHSC24921
Wyethia glabra
M. A. Callahan
1976-4-11
3
Contra Costa
Ca. 300 ft. e of house at 1976 Mohawk Dr. Pleasant Hill on steep w slope.
137
Comment
JEPS100164
Wyethia helenioides
S. O'Neil
2003-3-11
SEO 14
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
JEPS100163
Xanthium spinosum
A. Langston
2003-7-28
AL 78
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment
JEPS100067
Xanthium strumarium
A. Langston
2003-7-28
AL 77
Contra Costa
Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
Comment